Patent Publication Number: US-10767897-B2

Title: Window air conditioner

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
     This application is a continuation of International Application No. PCT/CN2019/073166, filed on Jan. 25, 2019, which claims priority to Chinese Patent Application Nos. 201820301650.3, 201820301648.6, 201820301081.2, and 201820302085.2, all filed with the Chinese Patent Office on Mar. 5, 2018, the entire contents of all of which are incorporated herein by reference. 
    
    
     FIELD 
     The present disclosure relates to the field of air conditioners and, more particularly, to a window air conditioner. 
     BACKGROUND 
     In an existing window air conditioner, a filter is laid flat at the air inlet to filter the airflow. In the process of realizing the present disclosure, the inventors have found that the following problems exist in the conventional technologies: the lay-flat filter has a limited filtering area and cannot achieve a very good filtering effect, and the lay-flat filter has the problem of large wind resistance, which causes varying degrees of air pressure loss and air volume loss and reduces the energy efficiency of the equipment, and in the case of multi-direction air intake of the equipment, a plurality of filters at different angles need to be designed separately to adapt to the adjustment for multi-direction air intake, which increases the complexity of the equipment, and increases the work involved in mounting and dismounting of the filters, resulting in the problem of inconvenient use. 
     SUMMARY 
     In view of this, there is a need for a window air conditioner capable of solving at least one of the above-mentioned technical problems. 
     A window air conditioner, comprising: a base provided with a first fixation member; a front panel provided with a second fixation member; and a filter, one end of which is detachably connected to the first fixation member, and the other end of which is detachably connected to the second fixation member, a supporting member being arranged on at least one of the base or the front panel, and the supporting member abutting against the filter, so that the filter is configured to be in an arc shape. 
     Compared with the conventional technologies, the present disclosure has the following advantageous technical effects: the arc-shaped filter structure in the present disclosure has a larger filtering area, can improve the filtering efficiency, and has reduced resistance loss when an airflow comes into contact with a surface of the arc-shaped filter, thereby reducing the losses of air pressure and air volume, improving the energy efficiency of the equipment, and reducing the noise of the airflow at the filter. In addition, the arc-shaped filter can realize multi-angle inlet air filtration, and in the case of multi-direction air intake of the equipment, it is only needed to adjust the arc radian and bending direction to adapt to the air intake angle, without the need to provide a plurality of filters for filtering separately, which reduces the number of filters, while meeting the filtering need, and saves the work involved in mounting and dismounting of the filter and facilitates the daily cleaning of products. Moreover, by connecting the filter to the second fixation member on the front panel, the user can integrally take the filter out from the position of the front panel for cleaning, which makes it more convenient for the user to take the filter out and improves the use experience of the product. 
     In addition, the window air conditioner in the above-described embodiment provided by the present disclosure can also have the following additional technical features: 
     In the above-described technical solution, one of the first fixation member and the second fixation member is a guide rail groove or a guide rail, the filter is provided with a track adapted to be slidably connected with the guide rail groove or the guide rail, the filter is slidably connected to the guide rail groove or the guide rail, and the filter is shaped, by the guide rail groove or the guide rail, to be adapted to a track shape of the guide rail groove or the guide rail. 
     Specifically, for example, when one of the first fixation member and the second fixation member is a guide rail groove, the track is a guide rail that can be slidably fitted with the guide rail groove, and when one of the first fixation member and the second fixation member is a guide rail, the track is a guide rail groove that can be slidably fitted with the guide rail. The structure is simple, realizes operation ease and convenience of assembly and disassembly between the filter and the base or the front panel, and facilitates daily cleaning of the filter by the user. Moreover, by making use of the characteristic that while the filter is slidably assembled by means of the guide rail groove or the guide rail, the guide rail groove or the guide rail is adapted to and matched with the track, the guide rail groove or the guide rail can be used to support and shape the filter, in order to assist in configuring the filter into an arc shape, thereby enabling the filter to be more stably kept in an arc shape, and preventing spring back of the filter. 
     In the above-described technical solution, the track shape of the guide rail groove or the guide rail is oblique line-shaped or arc-shaped. 
     While assisting in configuring the filter into an arc shape, this structure can facilitate the processing and manufacturing of the product due to its simple shape, is more conducive to ensuring smooth sliding of the track of the filter in the guide rail groove, and facilitates daily disassembly and cleaning of the filter by the user. 
     In any of the above-described technical solutions, an entrance of the guide rail groove is configured to have a trumpet shape. 
     This can facilitate the insertion of the track of the filter along the entrance of the guide rail groove, thereby facilitating daily assembly, disassembly and cleaning of the filter by the user. 
     In any of the above-described technical solutions, a surface of the entrance of the guide rail groove is an arc surface. 
     It can be understood that since the guide rail groove has certain shaping and supporting effect on the filter, there is an internal stress transition between a state of being shaped by the guide rail groove and a state of not being shaped by the guide rail groove in a portion of the filter in the vicinity of the entrance of the guide rail groove. In this design, the surface at the entrance of the guide rail groove is configured to be an arc surface, which can help the filter to adapt to the change of its internal stress in shape to form an appropriate bending shape transition, and prevent the filter from being broken due to an excessively large bending angle. Moreover, the arc-shaped surface leads to small friction and wear when coming into contact with the filter, which can avoid the problem of scratching of the filter by the guide rail groove and ensure the product quality. 
     In any of the above-described technical solutions, the filter is provided with two tracks that are spaced apart from each other, the supporting member comprises a first supporting rib, and a portion of the filter located between the two tracks is supported by the first supporting rib. 
     Slidably connecting the two tracks of the filter with two guide rail grooves or guide rails respectively can enable the filter to slide more smoothly along the guide rail grooves or the guide rails, and providing a first supporting rib to support and shape the filter can prevent a portion of the filter that is not supported or reinforced by the guide rail groove or the guide rail from collapsing and deforming, thereby effectively ensuring that the filtering area of the filter is not reduced, and ensuring the operation energy efficiency of the equipment. 
     In any of the above-described technical solutions, the other one of the first fixation member and the second fixation member comprises a locking groove, the filter is provided with a convex rib corresponding to the locking groove, and the convex rib and the locking groove are so adapted that the convex rib is snapped into the locking groove so as to fix the filter. 
     By snapping the convex rib of the filter into the locking groove, the filter is detachably fixed, that is, unlocking can be realized just by digging the convex rib out from the locking groove at the time of cleaning, which has the advantages of simple structure and convenient use and operation. 
     In the above-described technical solution, the other one of the first fixation member and the second fixation member further comprises a stopping member located at a groove opening of the locking groove and configured to limit the convex rib in the locking groove. 
     The convex rib is limited in the locking groove by using a stopping member, so that the filter is fixed and prevented from falling off, which ensures that the filter is fixed stably and reliably. 
     In any of the above-described technical solutions, the supporting member further comprises a second supporting rib having an arc shape, and the convex rib is snapped into the locking groove so that the filter is pressed against a surface of the second supporting rib. 
     By pressing the filter against the surface of the second supporting rib when the convex rib is snapped into the locking groove, the filter can be prevented from collapsing and deforming, thereby effectively ensuring that the filtering area of the filter is not reduced and ensuring the operation energy efficiency of the equipment. 
     In some embodiments, one surface of the filter is supported by the first supporting rib and the other surface of the filter is supported by the second supporting rib, and in some embodiments, a portion of the filter supported by the first supporting rib is offset from a portion of the filter supported by the second supporting rib. 
     In any of the above-described technical solutions, the filter is provided with a clasp, and the clasp is lifted to disengage the convex rib from the locking groove. 
     A clasp is provided at the filter, and the clasp is configured to: disengage the convex rib from the locking groove when the clasp is lifted. The clasp allows the user to apply a force to unlock the convex rib from locking groove, which has the advantages of simple structure and convenient use and operation. 
     In any of the above-described technical solutions, at least one of the front panel or the base is provided with an air inlet. 
     In any of the above-described technical solutions, the window air conditioner further comprises: a heat exchanger disposed on the base. 
     The heat exchanger of the window air conditioner is arranged on the base of the window air conditioner. In this solution, the first fixation member is designed on the base for assembly and cooperation with the filter, so that the heat exchanger and the filter can be positioned with the same reference, which ensures accurate alignment and matching of the filter and the heat exchanger. In this way, by accurately placing the filter at an upstream position of the heat exchanger, it is possible to effectively filter the airflow upstream of the heat exchanger to prevent dust from contaminating the heat exchanger and avoid the problem of clogging the heat exchanger. 
     In any of the above-described technical solutions, the window air conditioner further comprises: a cross-flow impeller; and a heat exchanger adjacent to the cross-flow impeller, the vertical distance between a surface of the heat exchanger and an outer surface of the cross-flow impeller being 14 mm-25 mm. 
     It&#39;s worth saying that when the window air conditioner is running, the airflow will be influenced by the structures such as the heat exchanger, the cross-flow impeller and the volute air duct in the process of passing through the heat exchanger and the cross-flow impeller, to produce multiple variations of pressure increase and pressure decrease, which will result in relatively large airflow noise in the volute air duct. In this solution, by controlling the vertical distance between the surface of the heat exchanger and the outer surface of the cross-flow impeller to be greater than or equal to 14 mm, the airflow noise during the operation of the equipment can be reduced, and by controlling the vertical distance between the surface of the heat exchanger and the outer surface of the cross-flow impeller to be smaller than or equal to 25 mm, the size of the equipment can be reduced, it can be effectively ensured that there is no reduction or loss in the air pressure and air volume of the cross-flow impeller, and the operation efficiency of the cross-flow impeller can be ensured. 
     In the above-described technical solution, the heat exchanger is a multi-section structure, and an angle is formed between any two adjacent sections in the multi-section structure, so that the heat exchanger is recessed as a whole, and the cross-flow impeller is located at one side of the heat exchanger that is inwardly recessed. 
     By designing the heat exchanger as a multi-section structure and arranging the heat exchanger on the outer side of the cross-flow impeller in such a manner as to surround half of the cross-flow impeller, simple structure is achieved and multi-angle air intake and heat exchange can be realized, which improves effective heat exchange area and heat exchange efficiency of the heat exchanger, and is also more conducive to reducing the size of the equipment, and ensures that the cross-flow impeller will experience no reduction or loss in air pressure and air volume, so as to ensure the operation efficiency of the cross-flow impeller. 
     In the above-described technical solution, the window air conditioner further comprises: a volute tongue plate, one section of the multi-section structure being a first heat exchange section, one end of the first heat exchange section being adjacent to the volute tongue plate, and the vertical distance between a surface of the first heat exchange section and the outer surface of the cross-flow impeller being 14 mm-25 mm. 
     In this way, it is possible to prevent the distance between the first heat exchange section adjacent to the volute tongue plate and the outer surface of the cross-flow impeller from being too small, thereby preventing the generation of an airflow vortex at the first heat exchange section and at a portion of the cross-flow impeller adjacent to the first heat exchange section, making it possible to avoid the problem of noise superposition at the volute tongue plate and reduce the energy loss of the airflow. Moreover, it is also possible to prevent the distance between the first heat exchange section and the outer surface of the cross-flow impeller from being too large, thereby making it possible to prevent the problem of turbulent flow caused by an excessively large difference in flow velocity between the airflow at the surface of the volute tongue plate and the airflow at the position of the first heat exchange section adjacent to the position of the volute tongue plate and at the position of the cross-flow impeller, which is also more conducive to reducing the size of the equipment, and ensures that there is no reduction or loss in air pressure and air volume of the cross-flow impeller, so as to ensure the operation efficiency of the cross-flow impeller. 
     In the above-described technical solution, the vertical distance between the surface of the first heat exchange section and the outer surface of the cross-flow impeller is 14 mm-22 mm. 
     In this way, it is possible to further prevent the distance between the first heat exchange section and the outer surface of the cross-flow impeller from being too large, thereby preventing the problem of turbulent flow caused by an excessively large difference in flow velocity between the airflow at the surface of the volute tongue plate and the airflow at the position of the first heat exchange section adjacent to the position of the volute tongue plate and at the position of the cross-flow impeller, which is also more conducive to reducing the size of the equipment, and ensures that there is no reduction or loss in air pressure and air volume of the cross-flow impeller, so as to ensure the operation efficiency of the cross-flow impeller. 
     In some embodiments, the vertical distance between the surface of the first heat exchange section and the outer surface of the cross-flow impeller is 17 mm-19 mm. 
     In any of the above-described technical solutions, a perpendicular foot of the center of the cross-flow impeller on the surface of the first heat exchange section is adjacent to the other end of the first heat exchange section. 
     The other end of the first heat exchange section is construed relative to the end of the first heat exchange section adjacent to the volute tongue plate, and can be construed as the other end of the first heat exchange section being the end of the first heat exchange section away from the volute tongue plate. 
     The arrangement that the perpendicular foot of the center of the cross-flow impeller on the surface of the first heat exchange section is adjacent to the other end of the first heat exchange section can also be construed as the perpendicular foot of the center of the cross-flow impeller on the surface of the first heat exchange section being located at a position between a midpoint of the first heat exchange section and the other end of the first heat exchange section. Since the position of the perpendicular foot of the center of the cross-flow impeller on the surface of the first heat exchange section is the point on the first heat exchange section having the smallest distance to the cross-flow impeller, the wind force and the air volume at this position are both larger than any other position of the first heat exchange section. For the multi-section structure, the position between two adjacent sections is generally the refrigerant inlet position. By designing the position of the perpendicular foot to be adjacent to the other end of the first heat exchange section, it is possible to make the heat load of the heat exchanger more adapted to the wind force at the corresponding position, and improve the heat exchange energy efficiency. 
     In any of the above-described technical solutions, another section of the multi-section structure is a second heat exchange section, one end of the second heat exchange section is adjacent to the first heat exchange section, and the vertical distance between a surface of the second heat exchange section and the outer surface of the cross-flow impeller is 19 mm-25 mm. 
     In this way, it is possible to prevent the distance between the second heat exchange section and the outer surface of the cross-flow impeller from being too small, thereby preventing the generation of an airflow vortex at the second heat exchange section and at a portion of the cross-flow impeller adjacent to the second heat exchange section, making it possible to avoid an airflow vortex at the positions and the problem of noise superposition at the volute tongue plate and the first heat exchange section, reduce the airflow noise during the operation of the equipment, and reduce the energy loss of the airflow. Moreover, it is also possible to prevent the distance between the first heat exchange section and the outer surface of the cross-flow impeller from being too large, thereby making it possible to prevent the problem of turbulent flow caused by an excessively large difference in flow velocity between the airflow at the surface of the volute tongue plate and the airflow at the position of the first heat exchange section adjacent to the position of the volute tongue plate and at the position of the cross-flow impeller, which is also more conducive to reducing the size of the equipment, and ensures that there is no reduction or loss in air pressure and air volume of the cross-flow impeller, so as to ensure the operation efficiency of the cross-flow impeller. 
     In the above-described technical solution, a perpendicular foot of the center of the cross-flow impeller on the second heat exchange section is adjacent to the one end of the second heat exchange section. 
     The one end of the second heat exchange section is the end of the second heat exchange section adjacent to the first heat exchange section. 
     The arrangement that the perpendicular foot of the center of the cross-flow impeller on the surface of the second heat exchange section is adjacent to the one end of the second heat exchange section can also be construed as the perpendicular foot of the center of the cross-flow impeller on the surface of the second heat exchange section being located at a position between a midpoint of the second heat exchange section and the one end of the second heat exchange section. Since the position of the perpendicular foot of the center of the cross-flow impeller on the surface of the second heat exchange section is the point on the second heat exchange section having the smallest distance to the cross-flow impeller, the wind force and the air volume at this position are both larger than any other position of the second heat exchange section. For the multi-section structure, the position between two adjacent sections is generally the refrigerant inlet position. By designing the position of the perpendicular foot to be adjacent to the one end of the second heat exchange section, it is possible to make the heat load of the heat exchanger more adapted to the wind force at the corresponding position, and improve the heat exchange energy efficiency. 
     In any of the above-described technical solutions, the heat exchanger has a two-section structure or a three-section structure. 
     In any of the above-described technical solutions, the heat exchanger is an indoor-side heat exchanger of the window air conditioner, and the cross-flow impeller is an indoor-side impeller of the window air conditioner. 
     In any of the above-described technical solutions, the window air conditioner further comprises a heat exchanger, and the heat exchanger comprises: a first heat exchange section; a second heat exchange section; a fixation frame, which has a two-section structure and comprises a first fixation section and a second fixation section, an angle between the first fixation section and the second fixation section being 118°-145°, the first heat exchange section being connected to the first fixation section, the second heat exchange section being connected to the second fixation section, and an angle between the first heat exchange section and the second heat exchange section being the same as the angle between the first fixation section and the second fixation section. 
     The fixation frame is provided with a first fixation section and a second fixation section to fix the first heat exchange section and the second heat exchange section, respectively, such that the angle between the first heat exchange section fixed by the first fixation section and the second heat exchange section fixed by the second fixation section is equal to the angle between the first fixation section and the second fixation section, which achieves a good shaping effect on the heat exchanger and enables convenient assembly, wherein by setting the angle between the first fixation section and the second fixation section to be 118°-145°, the angle between the first heat exchange section and the second heat exchange section assembled and constructed by the first fixation section and the second fixation section can be 118°-145°. In this way, the objects of reducing the space occupation rate of the heat exchanger and reducing the overall machine size can be achieved, the whole fixation frame has relatively uniform internal stress distribution, has good bearing effect, and is not easy to deform, and the load received by the first heat exchange section and the second heat exchange section is relatively small. Moreover, when the heat exchanger is in the range of the angle of 118°-145°, the airflow at the heat exchanger has a smoother flow line than in the case of any other configuration, the airflow noise is small, the loss in air pressure and air volume is small, and the energy efficiency attenuation is not obvious, which achieves the comprehensive object of giving consideration to product size, operation noise and energy efficiency, and solves the problem in the existing window air conditioner that it is difficult to give consideration to both the equipment size and the performance parameters such as product noise and energy efficiency. 
     In the above-described technical solution, the angle between the first fixation section and the second fixation section is 130.5°-140.5°. 
     The angle between the first fixation section and the second fixation section is further designed to be 130.5°-140.5°, so that the angle between the first heat exchange section and the second heat exchange section is correspondingly 130.5°-140.5°. In this way, the objects of reducing the space occupation rate of the heat exchanger and reducing the overall machine size can be achieved, and when the heat exchanger is in the range of the angle of 130.5°-140.5°, the smoothness of the flow line of the airflow at the heat exchanger is further improved, the airflow noise is smaller, the loss in air pressure and air volume is further reduced, and the energy efficiency attenuation is not obvious, thereby achieving the comprehensive object of giving consideration to product size, operation noise and energy efficiency. 
     In some embodiments, the angle between the first fixation section and the second fixation section is 133.5°-147.5°. In some embodiments, the angle between the first fixation section and the second fixation section is 135.5°. 
     In any of the above-described technical solutions, the first heat exchange section and the second heat exchange section are each provided with a plurality of heat exchange tubes, the first fixation section is provided with first tube holes configured to avoid the heat exchange tubes of the first heat exchange section, and the second fixation section is provided with second tube holes configured to avoid the heat exchange tubes of the second heat exchange section. 
     The first heat exchange section and the first fixation section, and the second heat exchange section and the second fixation section may be positioned and limited by a nested structure formed between the first tube holes and the second tube holes and the heat exchange tubes, to ensure that the angle between the first fixation section and the second fixation section is the same as the angle between the first heat exchange section and the second heat exchange section, thereby improving the accuracy of shaping of the first heat exchange section and the second heat exchange section. 
     In the above-described technical solution, the first tube holes are arranged in two rows or in three rows. 
     In the case where the angle between the first fixation section and the second fixation section is 118°-145°, i.e., in the case where the angle between the first heat exchange section and the second heat exchange section is 118°-145°, by arranging the first tube holes in two rows or in three rows, it is possible to further improve the smoothness of the flow line of the airflow at the first fixation section, achieve the objects of reducing noise, reducing the loss in air pressure and reducing the loss in air volume, and effectively ensure the heat exchange efficiency of the heat exchanger, so as to realize comprehensive improvement of the energy efficiency of the equipment. 
     In any of the above-described technical solutions, the second tube holes are arranged in two rows or in three rows. 
     In the case where the angle between the first fixation section and the second fixation section is 118°-145°, i.e., in the case where the angle between the first heat exchange section and the second heat exchange section is 118°-145°, by arranging the second tube holes in two rows or in three rows, it is possible to further improve the smoothness of the flow line of the airflow at the second fixation section, achieve the objects of reducing noise, reducing the loss in air pressure and reducing the loss in air volume, and effectively ensure the heat exchange efficiency of the heat exchanger, so as to realize comprehensive improvement of the energy efficiency of the equipment. 
     In any of the above-described technical solutions, the sum of the number of first tube holes and the number of second tube holes is 12-15. 
     In the case where the angle between the first fixation section and the second fixation section is 118°-145°, i.e., in the case where the angle between the first heat exchange section and the second heat exchange section is 118°-145°, by setting the sum of the number of first tube holes and the number of second tube holes to be 12-15, it is possible to further improve the smoothness of the flow line of the airflow at the second fixation section, achieve the objects of reducing noise, reducing the loss in air pressure and reducing the loss in air volume, and effectively ensure the heat exchange efficiency of the heat exchanger, so as to realize comprehensive improvement of the energy efficiency of the equipment. 
     In any of the above-described technical solutions, the fixation frame is provided with a mounting structure for mounting and fixing the fixation frame. 
     By providing a mounting structure on the fixation frame for the assembly of the fixation frame with other components of the air conditioner, the assembly accuracy and efficiency between the heat exchanger and other devices of the air conditioner can be improved. 
     In any of the above-described technical solutions, the base is provided with a bracket integrally formed with the base, the bracket is provided with a fixation structure configured to fix the heat exchanger, the base is provided with a water receiving groove integrally molded with the base, and the water receiving groove is configured to receive water from the heat exchanger. 
     The base is integrally molded with the bracket and the water receiving groove. On the one hand, the number of parts of the window air conditioner can be reduced, which not only facilitates the production of the window air conditioner, but also facilitates improving the assembly efficiency of the window air conditioner, and in this solution, there is no need to mount and position the water receiving groove, the base and the bracket, and the assembly and positioning of the heat exchanger and the water receiving groove can be achieved simultaneously when the heat exchanger is mounted on the bracket, which is more conducive to ensuring the assembly accuracy between the heat exchanger and the water receiving groove, and prevents the problem of water leakage caused by deviation of the heat exchanger or the water receiving groove. On the other hand, the integrally formed base, water receiving groove and bracket have relatively high connection strength, and are less likely to be deformed or even broken, which leads to relatively high reliability of overall connection between the base and the relevant structures of the window air conditioner connected to the base. In this way, it is possible to solve the problems of complex assembly process and relatively low assembly efficiency caused by separate connection of the fixation member of the heat exchanger, the water receiving groove and the base in the existing window air conditioner, and solve the problem of poor reliability of the overall connection of the heat exchanger, the fixation member of the heat exchanger, the water receiving groove and the base, resulting from the influence of manufacturing precision and human factors in the existing window air conditioner. 
     In the above-described technical solution, the bracket comprises: two supporting plates configured to support the heat exchanger, the two supporting plates being spaced apart from each other, and plate edges of the two supporting plates that are used for supporting the heat exchanger being configured to be inclined shape; and a rear abutment plate located at one side of the two supporting plates; the heat exchanger being located at the bracket, the portion of the heat exchanger supported by the supporting plates having an inclined shape adapted to the plate edges, and a bottom end portion of the heat exchanger abutting against the rear abutment plate. 
     The two supporting plates of the bracket are spaced apart from each other and support the heat exchanger, wherein the portions of the supporting plates that are used for supporting the heat exchanger are configured to have an inclined shape, and the portions of the heat exchanger that are supported by the supporting plates are made to have an inclined shape adapted to the plate edge, so as to facilitate the condensed water on the heat exchanger dripping from the heat exchanger smoothly, to reduce the possibility of accumulation of the condensed water on the surface of the heat exchanger, thereby reducing the influence of the condensed water on the heat exchange performance of the heat exchanger and improving the stability of the heat exchange performance of the heat exchanger. Moreover, by making the bottom end portion of the heat exchanger abut against the rear abutment plate, the rear abutment plate can limit the displacement of the heat exchanger towards one side of the rear abutment plate, which improves the reliability of the connection between the heat exchanger and the base. 
     In the above-described technical solution, the spacing between the two supporting plates is adapted to the width of the heat exchanger such that the supporting position at which the supporting plates support the heat exchanger is adjacent to a side plate of the heat exchanger. 
     In this way, the influence of the two supporting plates on the air intake of the heat exchanger can be reduced, that is, the wind resistance of the supporting plates during the air intaking process of the heat exchanger can be reduced, which facilitates improving the air intaking efficiency of the heat exchanger and further improves the heat exchange performance of the heat exchanger. 
     In the above-described technical solution, the two supporting plates are located between two side plates of the heat exchanger, and the two side plates of the heat exchanger clamp the two supporting plates towards each other. 
     In this way, on the one hand, the reliability of the connection between the heat exchanger and the two supporting plates can be improved, and on the other hand, the displacement of the heat exchanger in the width direction can be restricted by the abutment between the supporting plates and the two side plates, thereby further improving the reliability of the connection between the heat exchanger and the two supporting plates. 
     In any of the above-described technical solutions, the supporting plates are provided with reinforcing ribs. 
     In this way, the strength of the supporting plates can be improved, thereby improving the reliability of the connection between the heat exchanger and the base. 
     In any of the above-described technical solutions, the rear abutment plate is provided with reinforcing ribs. 
     In this way, the strength of the rear abutment plate can be improved to reduce the possibility of the heat exchanger moving towards one side of the rear abutment plate and improve the reliability of the connection between the heat exchanger and the base. 
     Moreover, in the case where the supporting plates and the rear abutment plate are each provided with reinforcing ribs, the reliability of the connection between the heat exchanger and the base can be greatly improved. 
     In any of the above-described technical solutions, the fixation structure comprises a screw hole structure, the heat exchanger is provided with a through hole corresponding to the screw hole structure, and a threaded fastener is passed through the through hole and threadedly connected to the screw hole structure. 
     At the time of mounting the heat exchanger, after the positioning of the heat exchanger is completed, the threaded fastener is passed through the through hole on the heat exchanger and threadedly connected to the screw hole structure, so as to realize fixed connection between the heat exchanger and the bracket. The use of the screw hole structure and the threaded fastener leads to a simple structure and convenient assembly and disassembly, and facilitates improving the assembly speed of the heat exchanger and the base, and also ensures reliable connection, so as to improve the reliability of connection between the bracket and the heat exchanger. 
     In any of the above-described technical solutions, the bracket is provided with the first fixation member. 
     The filter is fixedly connected with the bracket by the first fixation member, and can filter the impurities in a fluid flowing into the heat exchanger to reduce the impurities in the heat exchanger, thereby reducing the influence of the impurities on the heat exchange performance of the heat exchanger, and improving the stability of the heat exchange performance of the heat exchanger. Moreover, the filter and the heat exchanger are both fixedly disposed on the bracket, so that the filter, the base and the heat exchanger are more accurately positioned, and have higher reliability of overall connection. 
     In any of the above-described technical solutions, the base is an indoor-side base of the window air conditioner, the base is provided with a water discharge opening for discharging water to the outdoor side of the window air conditioner, and the water discharge opening communicates with the water receiving groove. 
     The base is an indoor-side base, and after the water receiving groove on the base collects the condensed water from the heat exchanger, the condensed water flows through the water discharge opening communicating with the water receiving groove and flows to the outdoor side of the window air conditioner, which can reduce the influence of the condensed water generated by the heat exchanger on the indoor-side user. 
     Additional aspects and advantages of the present disclosure will become apparent in the following description, or are understood by the practice of the present disclosure. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The above and/or additional aspects and advantages of the present disclosure will become apparent and readily understood from the following description of embodiments in conjunction with the drawings: 
         FIG. 1  is a schematic partial front view of a window air conditioner according to an embodiment of the present disclosure; 
         FIG. 2  is a schematic sectional view in the A-A direction shown in  FIG. 1 ; 
         FIG. 3  is a schematic partial perspective view of the window air conditioner according to an embodiment of the present disclosure; 
         FIG. 4  is a schematic perspective view of a base according to an embodiment of the present disclosure; 
         FIG. 5  is a schematic sectional view of the window air conditioner according to an embodiment of the present disclosure; 
         FIG. 6  is a schematic partial front view of the window air conditioner according to an embodiment of the present disclosure; 
         FIG. 7  is a schematic sectional view in the B-B direction shown in  FIG. 6 ; 
         FIG. 8  is a schematic view of the partial structure of the window air conditioner shown in  FIG. 6 , at another angle; 
         FIG. 9  is a schematic perspective view of a heat exchanger according to an embodiment of the present disclosure; 
         FIG. 10  is a partial structural view of the window air conditioner according to an embodiment of the present disclosure; 
         FIG. 11  is a schematic perspective view of the base according to an embodiment of the present disclosure; 
         FIG. 12  is a partially enlarged view of part C shown in  FIG. 11 ; 
         FIG. 13  is a schematic top view of the base according to an embodiment of the present disclosure; 
         FIG. 14  is a schematic partial perspective view of the window air conditioner according to an embodiment of the present disclosure; and 
         FIG. 15  is an exploded, perspective view of the window air conditioner according to an embodiment of the present disclosure. 
     
    
    
     The corresponding relationship between the reference numerals and components in  FIG. 1  to  FIG. 15  are as follows: 
       10  base,  11  guide rail groove,  12  first supporting rib,  13  supporting plate,  14  rear abutment plate,  15  reinforcing rib,  17  water receiving groove,  18  water discharge opening,  19  screw hole structure,  20  front panel,  21  locking groove,  22  second supporting rib,  23  stopping member,  24  air inlet,  30  filter,  31  track,  32  convex rib,  33  clasp,  40  heat exchanger,  41  first heat exchange section,  42  second heat exchange section,  43  through hole,  50  cross-flow impeller,  61  volute tongue plate,  62  volute plate,  63  volute assembly,  70  fixation frame,  71  first fixation section,  711  first tube hole,  72  second fixation section,  721  second tube hole,  731  first connection edge,  732  second connection edge, and  74  threaded hole. 
     DETAILED DESCRIPTION OF THE EMBODIMENTS 
     In order that the above-mentioned objectives, features and advantages of the present disclosure can be understood more clearly, a further detailed description of the present disclosure will be given below in connection with the accompanying drawings and specific embodiments. The embodiments of the present disclosure and the features in the embodiments can be combined with each other if there is no conflict. 
     In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present disclosure. However, the present disclosure can also be implemented in other manners than those described herein. Therefore, the protection scope of the present disclosure is not limited to the specific embodiments disclosed below. 
     A window air conditioner according to some embodiments of the present disclosure is described below with reference to  FIG. 1  to  FIG. 15 . 
     As shown in  FIG. 1  to  FIG. 4 , the window air conditioner provided by an embodiment of the present disclosure comprises: a base  10 , a front panel  20  and a filter  30 . 
     Specifically, the base  10  is provided with a first fixation member; the front panel  20  is provided with a second fixation member; and one end  301  of the filter  30  is detachably connected to the first fixation member, and the other end  302  of the filter  30  is detachably connected to the second fixation member, wherein a supporting member is arranged on the base  10  and/or the front panel  20 , and the supporting member abuts against the filter  30 , so that the filter  30  is configured to be in an arc shape. 
     In the window air conditioner provided by the above-mentioned embodiment of the present disclosure, the filter  30  is fixed by the first fixation member and the second fixation member, and a supporting member is provided to support the filter  30 , so that the filter  30  is elastically deformed after being fixed and configured into an arc shape. Compared with the structure in which the filter  30  is laid flat at the air inlet  24 , the arc-shaped filter  30  structure has a larger filtering area, can improve the filtering efficiency, and has reduced resistance loss when an airflow comes into contact with a surface of the arc-shaped filter  30 , thereby reducing the losses of air pressure and air volume, improving the energy efficiency of the equipment, and reducing the noise of the airflow at the filter  30 . In addition, the arc-shaped filter  30  can realize multi-angle inlet air filtration, and in the case of multi-direction air intake of the equipment, it is only needed to adjust the arc radian and bending direction to adapt to the air intake angle, without the need to provide a plurality of filters  30  for filtering separately, which reduces the number of filters  30 , while meeting the filtering need, and saves the work involved in mounting and dismounting of the filter  30  and facilitates the daily cleaning of products. Moreover, by connecting the filter  30  to the second fixation member on the front panel  20 , the user can integrally take the filter  30  out from the position of the front panel  20  for cleaning, which makes it more convenient for the user to take the filter out and improves the use experience of the product. 
     In a specific embodiment of the present disclosure, as shown in  FIG. 3  and  FIG. 4 , one of the first fixation member and the second fixation member is a guide rail groove  11 , and the track  31  is a guide rail that can be slidably fitted with the guide rail groove  11 , wherein when the filter  30  is slidably connected to the guide rail groove  11 , the filter  30  is shaped, by the guide rail groove  11 , to be adapted to a track shape of the guide rail groove  11 . The structure is simple, realizes operation ease and convenience of assembly and disassembly between the filter  30  and the base  10  or the front panel  20 , and facilitates daily cleaning of the filter  30  by the user. Moreover, by making use of the characteristic that while the filter  30  is slidably assembled by means of the guide rail groove  11 , the guide rail groove  11  is adapted to and matched with the track  31 , the guide rail groove  11  can be used to support and shape the filter  30 , in order to assist in configuring the filter  30  into an arc shape, thereby enabling the filter  30  to be more stably kept in an arc shape, and preventing spring back of the filter  30 . 
     In the present embodiment, as shown in  FIG. 4 , the track shape of the guide rail groove  11  is oblique line-shaped or arc-shaped. While assisting in configuring the filter  30  into an arc shape, this structure can facilitate the processing and manufacturing of the product due to its simple shape, is more conducive to ensuring smooth sliding of the track  31  of the filter  30  in the guide rail groove  11 , and facilitates daily disassembly and cleaning of the filter  30  by the user. 
     In the present embodiment, as shown in  FIG. 4 , an entrance of the guide rail groove  11  is configured to have a trumpet shape. This can facilitate the insertion of the track  31  of the filter  30  along the entrance of the guide rail groove  11 , thereby facilitating daily assembly, disassembly and cleaning of the filter  30  by the user. 
     In the present embodiment, as shown in  FIG. 4 , a surface of the entrance of the guide rail groove  11  is an arc surface. It can be understood that since the guide rail groove  11  has certain shaping and supporting effect on the filter  30 , there is an internal stress transition between a state of being shaped by the guide rail groove  11  and a state of not being shaped by the guide rail groove  11  in a portion of the filter  30  in the vicinity of the entrance of the guide rail groove  11 . In this design, the surface at the entrance of the guide rail groove  11  is configured to be an arc surface, which can help the filter  30  to adapt to the change of its internal stress in shape to form an appropriate bending shape transition, and prevent the filter  30  from being broken due to an excessively large bending angle. Moreover, the arc-shaped surface leads to small friction and wear when coming into contact with the filter  30 , which can avoid the problem of scratching of the filter  30  by the guide rail groove  11  and ensure the product quality. 
     In other embodiments, one of the first fixation member and the second fixation member is a guide rail, then the track  31  is a guide rail groove that can be slidably fitted with the guide rail, wherein when the filter  30  is slidably connected to the guide rail, the filter  30  is shaped, by the guide rail, to be adapted to a track shape of the guide rail. Correspondingly, the track shape of the guide rail may be further configured to be oblique line-shaped or arc-shaped. 
     In a specific embodiment of the present disclosure, as shown in  FIG. 3 , the filter  30  is provided with two tracks  31  that are spaced apart from each other, wherein the supporting member comprises a first supporting rib  12 , specifically as shown in  FIG. 1  to  FIG. 4 , the first supporting rib  12  is provided at a position of the base  10  between two guide rail grooves  11 , and a portion of the filter  30  located between the two tracks  31  is supported by the first supporting rib  12 . Slidably connecting the two tracks  31  of the filter  30  with two guide rail grooves  11  or guide rails respectively can enable the filter  30  to slide more smoothly along the guide rail grooves  11  or the guide rails, and providing the first supporting rib  12  to support and shape the filter  30  can prevent a portion of the filter  30  that is not supported or reinforced by the guide rail groove  11  or the guide rail from collapsing and deforming, thereby effectively ensuring that the filtering area of the filter  30  is not reduced, and ensuring the operation energy efficiency of the equipment. 
     In a specific embodiment of the present disclosure, as shown in  FIG. 1 , one of the first fixation member and the second fixation member is a guide rail groove  11  or a guide rail, the other one of the first fixation member and the second fixation member comprises a locking groove  21 , the filter  30  is provided with a convex rib  32  corresponding to the locking groove  21 , and the convex rib  32  can be snapped into the locking groove  21  so as to fix the filter  30 . In this solution, by snapping the convex rib  32  of the filter  30  into the locking groove  21 , the filter  30  is detachably fixed, that is, unlocking can be realized just by digging the convex rib  32  out from the locking groove  21  at the time of cleaning, which has the advantages of simple structure and convenient use and operation. 
     In the present embodiment, as shown in  FIG. 1  and  FIG. 2 , the other one of the first fixation member and the second fixation member further comprises a stopping member  23  located at a groove opening of the locking groove  21  and configured to limit the convex rib  32  in the locking groove  21 , so as to fix the filter  30  and prevent the filter  30  from falling off, and ensure that the filter  30  is fixed stably and reliably. 
     In a specific embodiment of the present disclosure, as shown in  FIG. 2 , the supporting member further comprises a second supporting rib  22  having an arc shape, and when the convex rib  32  is snapped into the locking groove  21 , the filter  30  is pressed against a surface of the second supporting rib  22 . In this way, the filter  30  can be prevented from collapsing and deforming, thereby effectively ensuring that the filtering area of the filter  30  is not reduced and ensuring the operation energy efficiency of the equipment. 
     In some embodiments, one surface of the filter  30  is supported by the first supporting rib  12  and the other surface of the filter  30  is supported by the second supporting rib  22 , and in some embodiments, a portion of the filter  30  supported by the first supporting rib  12  is offset from a portion of the filter  30  supported by the second supporting rib  22 . In this way, the filter  30  is well supported and shaped, and there are also relatively fewer supported portions of the filter  30 , which can reduce the wind resistance on the filter  30 . 
     In a specific embodiment of the present disclosure, as shown in  FIG. 1 ,  FIG. 2  and  FIG. 3 , a clasp  33  is provided at the filter  30 , and when the clasp  33  is lifted, the convex rib  32  is disengaged from the locking groove  21 , wherein the clasp  33  allows the user to apply a force to unlock the convex rib  32  from locking groove  21 , which has the advantages of simple structure and convenient use and operation. 
     In a specific embodiment of the present disclosure, the front panel  20  and/or the base  10  are/is provided with an air inlet  24 . In some embodiments, the air inlet  24  is provided at the front panel  20  and/or the base  10  at a position corresponding to the filter  30 , so as to further reduce wind resistance. 
     In a specific embodiment of the present disclosure, as shown in  FIG. 1  to  FIG. 3 , the window air conditioner further comprises a heat exchanger  40  located at the base  10 . In this solution, the first fixation member is designed on the base  10  for assembly and cooperation with the filter  30 , so that the heat exchanger  40  and the filter  30  can be positioned with the same reference, which ensures accurate alignment and matching of the filter  30  and the heat exchanger  40 . In this way, by accurately placing the filter  30  at an upstream position of the heat exchanger  40 , it is possible to effectively filter the airflow upstream of the heat exchanger  40  to prevent dust from contaminating the heat exchanger  40  and avoid the problem of clogging the heat exchanger  40 . 
     In some embodiments, the heat exchanger  40  is a multi-section heat exchanger  40 , the filter  30  is located at the upstream side of the heat exchanger  40 , and the arc shape of the filter  30  matches the shape of the heat exchanger  40 , so that the filter  30  is arranged on the outer side of the heat exchanger  40  in such a manner as to surround half of the heat exchanger  40 . 
     In some embodiments, as shown in  FIG. 3 , the base  10  is provided with a supporting plate  13  for supporting the heat exchanger  40 , and the first fixation member of the base  10  is provided at the supporting plate  13 . In this structure, by arranging the first fixation member and the second fixation member used for fixing and shaping the filter  30  to two separate components, respectively, i.e., the first fixation member being located at the base  10  and the second fixation member being located at the front panel  20 , compared with the solution in which the first fixation member and the second fixation member are integrated on a single component, there is no need to consider the continuity of the two fixation members, in this way, the processing technology of the components can be simplified, especially for injection molded components, the mold structure and injection molding process are greatly simplified, which is beneficial to improving the molding quality of products. 
       FIG. 5  shows the window air conditioner provided by an embodiment of the present disclosure. The window air conditioner comprises a cross-flow impeller  50  and a heat exchanger  40 . Specifically, the heat exchanger  40  is adjacent to the cross-flow impeller  50 , and the vertical distance between a surface of the heat exchanger  40  and an outer surface of the cross-flow impeller  50  is 14 mm-25 mm. 
     In the window air conditioner according to the above embodiment of the present disclosure, the vertical distance between the surface of the heat exchanger  40  and the outer surface of the cross-flow impeller  50  is set to be 14 mm-25 mm (e.g., the vertical distance between the surface of the heat exchanger  40  and the outer surface of the cross-flow impeller  50  is designed to be any of 16 mm, 17 mm, 18.5 mm, 19.5 mm, 20 mm, 21 mm, 22 mm, 23 mm, etc.), wherein by controlling the vertical distance between the surface of the heat exchanger  40  and the outer surface of the cross-flow impeller  50  to be greater than or equal to 14 mm, the airflow noise during the operation of the equipment can be reduced, and by controlling the vertical distance between the surface of the heat exchanger  40  and the outer surface of the cross-flow impeller  50  to be smaller than or equal to 25 mm, the size of the equipment can be reduced, it can be effectively ensured that there is no reduction or loss in the air pressure and air volume of the cross-flow impeller  50 , and the operation efficiency of the cross-flow impeller  50  can be ensured. 
     In the present embodiment, as shown in  FIG. 5 , the heat exchanger  40  has a multi-section structure, and an angle is formed between any two adjacent sections of the multi-section structure, so that the heat exchanger  40  is recessed as a whole, wherein the cross-flow impeller  50  is located at one side of the heat exchanger  40  that is inwardly recessed. By designing the heat exchanger  40  as a multi-section structure and arranging the heat exchanger  40  on the outer side of the cross-flow impeller  50  in such a manner as to surround half of the cross-flow impeller  50 , simple structure is achieved and multi-angle air intake and heat exchange can be realized, which improves effective heat exchange area and heat exchange efficiency of the heat exchanger  40 , and is also more conducive to reducing the size of the equipment, and ensures that the cross-flow impeller  50  will experience no reduction or loss in air pressure and air volume, so as to ensure the operation efficiency of the cross-flow impeller  50 . 
     In the present embodiment, as shown in  FIG. 5 , the window air conditioner further comprises a volute tongue plate  61  and a volute plate  62 , the volute tongue plate  61  and the volute plate  62  form a volute air duct, wherein one section of the multi-section structure is a first heat exchange section  41 , one end of the first heat exchange section  41  is adjacent to the volute tongue plate. More specifically, as shown in  FIG. 5 , the one end of the first heat exchange section  41  is embedded in a position on the leeward side of the volute tongue plate. In addition, the vertical distance H 1  between the surface of the first heat exchange section  41  and the outer surface of the cross-flow impeller  50  is 14 mm-25 mm. 
       FIG. 5  shows an auxiliary circle w 1  with the center of the cross-flow impeller  50  as the circle center and tangent to the surface of the first heat exchange section  41 . The difference between the radius R 1  of the auxiliary circle w 1  and the outer contour radius R of the cross-flow impeller  50  is H 1 , that is, the difference between the radius R 1  of the auxiliary circle w 1  and the outer contour radius R of the cross-flow impeller  50  is the vertical distance between the surface of the first heat exchange section  41  and the outer surface of the cross-flow impeller  50 . 
     In this solution, the first heat exchange section  41  is adjacent to the volute tongue plate  61 , and the vertical distance H 1  between the surface of the first heat exchange section  41  and the outer surface of the cross-flow impeller  50  is designed to be 14 mm-25 mm. In this way, it is possible to prevent the distance between the first heat exchange section  41  and the outer surface of the cross-flow impeller  50  from being too small, making it possible to prevent the generation of an airflow vortex at the first heat exchange section  41  and at a portion of the cross-flow impeller  50  adjacent to the first heat exchange section  41 , thereby avoiding the problem of noise superposition at the volute tongue plate  61  and reducing the energy loss of the airflow. Moreover, it is also possible to prevent the distance between the first heat exchange section  41  and the outer surface of the cross-flow impeller  50  from being too large, thereby making it possible to prevent the problem of turbulent flow caused by an excessively large difference in flow velocity between the airflow at the surface of the volute tongue plate  61  and the airflow at the position of the first heat exchange section  41  adjacent to the position of the volute tongue plate  61  and at the position of the cross-flow impeller  50 , which is also more conducive in reducing the size of the equipment, and ensures that there is no reduction or loss in air pressure and air volume of the cross-flow impeller  50 , so as to ensure the operation efficiency of the cross-flow impeller  50 . 
     In some embodiments, as shown in  FIG. 5 , the vertical distance H 1  between the surface of the first heat exchange section  41  and the outer surface of the cross-flow impeller  50  is 14 mm-22 mm. In this way, it is possible to further prevent the distance between the first heat exchange section  41  and the outer surface of the cross-flow impeller  50  from being too large, thereby preventing the problem of turbulent flow caused by an excessively large difference in flow velocity between the airflow at the surface of the volute tongue plate  61  and the airflow at the position of the first heat exchange section  41  adjacent to the position of the volute tongue plate  61  and at the position of the cross-flow impeller  50 , which is also more conducive to reducing the size of the equipment, and ensures that there is no reduction or loss in air pressure and air volume of the cross-flow impeller  50 , so as to ensure the operation efficiency of the cross-flow impeller  50 . 
     In some embodiments, the vertical distance between the surface of the first heat exchange section  41  and the outer surface of the cross-flow impeller  50  is 17 mm-19 mm. 
     In this embodiment, as shown in  FIG. 5 , a perpendicular foot of the center of the cross-flow impeller  50  on the surface of the first heat exchange section  41  is adjacent to the other end of the first heat exchange section  41 . 
     The other end of the first heat exchange section  41  is construed relative to the end of the first heat exchange section  41  adjacent to the volute tongue plate  61 , and can be construed as the other end of the first heat exchange section  41  being the end of the first heat exchange section  41  away from the volute tongue plate  61 . 
     In this solution, the perpendicular foot of the center of the cross-flow impeller  50  on the surface of the first heat exchange section  41  is adjacent to the other end of the first heat exchange section  41 . That is, the perpendicular foot of the center of the cross-flow impeller  50  on the surface of the first heat exchange section  41  is located at a position between a midpoint of the first heat exchange section  41  and the other end of the first heat exchange section  41 . Since the position of the perpendicular foot of the center of the cross-flow impeller  50  on the surface of the first heat exchange section  41  is the point on the first heat exchange section  41  having the smallest distance to the cross-flow impeller  50 , the wind force and the air volume at this position are both larger than any other position of the first heat exchange section  41 . For the multi-section structure, the position between two adjacent sections is generally the refrigerant inlet position. By designing the position of the perpendicular foot to be adjacent to the other end of the first heat exchange section  41 , it is possible to make the heat load of the heat exchanger  40  more adapted to the wind force at the corresponding position, and improve the heat exchange energy efficiency. 
     In this embodiment, as shown in  FIG. 5 , another section of the multi-section structure is a second heat exchange section  42 , one end of the second heat exchange section  42  is adjacent to the first heat exchange section  41 , and the vertical distance H 2  between a surface of the second heat exchange section  42  and the outer surface of the cross-flow impeller  50  is 19 mm-25 mm. 
       FIG. 5  also shows another auxiliary circle w 2  with the center of the cross-flow impeller  50  as the circle center, and tangent to the surface of the second heat exchange section  42 . The difference between the radius R 2  of the auxiliary circle w 2  and the outer contour radius R of the cross-flow impeller  50  is H 2 , that is, the difference between the radius R 2  of the auxiliary circle w 2  and the outer contour radius R of the cross-flow impeller  50  is the vertical distance between the surface of the second heat exchange section  42  and the outer surface of the cross-flow impeller  50 . 
     In this solution, the vertical distance H 2  between the surface of the second heat exchange section  42  and the outer surface of the cross-flow impeller  50  is designed to be 19 mm-25 mm. In this way, it is possible to prevent the distance between the second heat exchange section  42  and the outer surface of the cross-flow impeller  50  from being too small, thereby preventing the generation of an airflow vortex at the second heat exchange section  42  and at a portion of the cross-flow impeller  50  adjacent to the second heat exchange section  42 , making it possible to avoid an airflow vortex at the positions and the problem of noise superposition at the volute tongue plate  61  and the first heat exchange section  41 , reduce the airflow noise during the operation of the equipment, and reduce the energy loss of the airflow. Moreover, it is also possible to prevent the distance between the first heat exchange section  41  and the outer surface of the cross-flow impeller  50  from being too large, thereby making it possible to prevent the problem of turbulent flow caused by an excessively large difference in flow velocity between the airflow at the surface of the volute tongue plate  61  and the airflow at the position of the first heat exchange section  41  adjacent to the position of the volute tongue plate  61  and at the position of the cross-flow impeller  50 , which is also more conducive to reducing the size of the equipment, and ensures that there is no reduction or loss in air pressure and air volume of the cross-flow impeller  50 , so as to ensure the operation efficiency of the cross-flow impeller  50 . 
     In this embodiment, as shown in  FIG. 5 , a perpendicular foot of the center of the cross-flow impeller  50  on the second heat exchange section  42  is adjacent to the one end of the second heat exchange section  42 . 
     The one end of the second heat exchange section  42  is the end of the second heat exchange section  42  adjacent to the first heat exchange section  41 . 
     In this solution, the perpendicular foot of the center of the cross-flow impeller  50  on the surface of the second heat exchange section  42  is adjacent to the one end of the second heat exchange section  42 . That is, the perpendicular foot of the center of the cross-flow impeller  50  on the surface of the second heat exchange section  42  is located at a position between a midpoint of the second heat exchange section  42  and the one end of the second heat exchange section  42 . Since the position of the perpendicular foot of the center of the cross-flow impeller  50  on the surface of the second heat exchange section  42  is the point on the second heat exchange section  42  having the smallest distance to the cross-flow impeller  50 , the wind force and the air volume at this position are both larger than any other position of the second heat exchange section  42 . For the multi-section structure, the position between two adjacent sections is generally the refrigerant inlet position. By designing the position of the perpendicular foot to be adjacent to the one end of the second heat exchange section  42 , it is possible to make the heat load of the heat exchanger  40  more adapted to the wind force at the corresponding position, and improve the heat exchange energy efficiency. 
     Optionally, the heat exchanger  40  has a two-section structure or a three-section structure. 
     Optionally, the heat exchanger  40  is an indoor-side heat exchanger  40  of the window air conditioner, and the cross-flow impeller  50  is an indoor-side impeller of the window air conditioner. 
     As shown in  FIG. 6  to  FIG. 10 , the window air conditioner provided by an embodiment of the present disclosure comprises the heat exchanger  40 . The heat exchanger  40  specifically comprises the first heat exchange section  41 , the second heat exchange section  42  and a fixation frame  70 . 
     As shown in  FIG. 9 , the fixation frame  70  has a two-section structure and specifically comprises a first fixation section  71  for fixing the first heat exchange section  41  and a second fixation section  72  for fixing the second heat exchange section  42 , and the angle α between the first fixation section  71  and the second fixation section  72  is 118°-145°. 
     The first heat exchange section  41  is connected to the first fixation section  71 , the second heat exchange section  42  is connected to the second fixation section  72 , and the angle between the first heat exchange section  41  and the second heat exchange section  42  is the same as the angle between the first fixation section  71  and the second fixation section  72 . 
     With the fixation frame  70  of the heat exchanger  40  provided by the above embodiment of the present disclosure, the assembled and constructed heat exchanger  40  as a whole is shaped to have an angle of 118°-145°, which achieves a good shaping effect on the heat exchanger  40  and enables convenient assembly. Moreover, by controlling the angle between the first heat exchange section  41  and the second heat exchange section  42  correspondingly to be 118°-145° by the fixation frame  70 , the objects of reducing the space occupation rate of the heat exchanger  40  and reducing the overall machine size can be achieved. Furthermore, when the heat exchanger  40  is in the range of the angle of 118°-145°, the airflow at the heat exchanger  40  has a smoother flow line than in the case of any other configuration, the airflow noise is small, the loss in air pressure and air volume is small, and the energy efficiency attenuation is not obvious, which achieves the comprehensive object of giving consideration to product size, operation noise and energy efficiency. 
     In this embodiment, as shown in  FIG. 8 , the angle α between the first fixation section  71  and the second fixation section  72  is set to be 130.5°-140.5°, so that the angle between the first heat exchange section  41  and the second heat exchange section  42  fixed by the fixation frame  70  is correspondingly 130.5°-140.5°. In this way, the objects of reducing the space occupation rate of the heat exchanger  40  and reducing the overall machine size can be achieved, and when the heat exchanger  40  is in the range of the angle of 130.5°-140.5°, the smoothness of the flow line of the airflow at the heat exchanger  40  is further improved, the airflow noise is smaller, the loss in air pressure and air volume is further reduced, and the energy efficiency attenuation is not obvious, thereby achieving the comprehensive object of giving consideration to product size, operation noise and energy efficiency. 
     In some embodiments, the angle α between the first fixation section  71  and the second fixation section  72  is 133.5°-147.5°. In some embodiments, the angle α between the first fixation section  71  and the second fixation section  72  is 135.5°. 
     In a specific embodiment of the present disclosure, the first heat exchange section  41  and the second heat exchange section  42  are each provided with a plurality of heat exchange tubes, wherein as shown in  FIG. 8  to  FIG. 10 , the first fixation section  71  is provided with first tube holes  711  configured to avoid the heat exchange tubes of the first heat exchange section  41 , and the second fixation section  72  is provided with second tube holes  721  configured to avoid the heat exchange tubes of the second heat exchange section  42 . In some embodiments, as shown in  FIG. 8 ,  FIG. 9  and  FIG. 10 , the first tube holes  711  on the first fixation section  71  and/or the second tube holes  721  on the second fixation section  72  are tube holes suitable for avoiding U-shaped heat exchange tubes. 
     In this solution, the first tube holes  711  are designed on the first fixation section  71  and the second tube holes  721  are designed on the second fixation section  72  to correspondingly avoid the heat exchange tubes of the first heat exchange section  41  and the heat exchange tubes of the second heat exchange section  42 . In this structure, the first heat exchange section  41  and the first fixation section  71 , and the second heat exchange section  42  and the second fixation section  72  may be positioned and limited by a nested structure formed between the tube holes and the heat exchange tubes, to ensure that the angle between the first fixation section  71  and the second fixation section  72  is the same as the angle between the first heat exchange section  41  and the second heat exchange section  42 , thereby improving the accuracy of shaping of the first heat exchange section  41  and the second heat exchange section  42 . 
     In some embodiments of the present disclosure, as shown in  FIG. 7 ,  FIG. 8  and  FIG. 9 , the first tube holes  711  on the first fixation section  71  are arranged in two rows, or as shown in  FIG. 10 , the first tube holes  711  on the first fixation section  71  are arranged in three rows. On the basis that the angle between the first fixation section  71  and the second fixation section  72  is 118°-145°, i.e., the angle between the first heat exchange section  41  and the second heat exchange section  42  is 118°-145°, by further arranging the first tube holes  711  on the first fixation section  71  in two rows or in three rows, it is possible to further improve the smoothness of the flow line of the airflow at the first fixation section  71 , achieve the objects of reducing noise, reducing the loss in air pressure and reducing the loss in air volume, and effectively ensure the heat exchange efficiency of the heat exchanger  40 , so as to realize comprehensive improvement of the energy efficiency of the equipment. 
     In some embodiments of the present disclosure, as shown in  FIG. 7 ,  FIG. 8 ,  FIG. 9  and  FIG. 10 , the second tube holes  721  on the second fixation section  72  are arranged in two rows. Of course, the solution is not limited thereto, and a person skilled in the art may also design the second tube holes  721  on the second fixation section  72  to be arranged in three rows according to the needs. 
     On the basis that the angle between the first fixation section  71  and the second fixation section  72  is 118°-145°, i.e., the angle between the first heat exchange section  41  and the second heat exchange section  42  is 118°-145°. By further arranging the second tube holes  721  on the second fixation section  72  in two rows or in three rows, it is possible to further improve the smoothness of the flow line of the airflow at the second fixation section  72 , achieve the objects of reducing noise, reducing the loss in air pressure and reducing the loss in air volume, and effectively ensure the heat exchange efficiency of the heat exchanger  40 , so as to realize comprehensive improvement of the energy efficiency of the equipment. 
     In some embodiments of the present disclosure, as shown in  FIG. 7 ,  FIG. 8  and  FIG. 9 , the sum of the number of first tube holes  711  on the first fixation section  71  and the number of second tube holes  721  on the second fixation section  72  is 12, or as shown in  FIG. 10 , the sum of the number of first tube holes  711  on the first fixation section  71  and the number of second tube holes  721  on the second fixation section  72  is 15. Of course, the solution is not limited thereto, and a person skilled in the art may also design the sum of the number of first tube holes  711  on the first fixation section  71  and the number of second tube holes  721  on the second fixation section  72  to be 13 or 14 according to the needs. On the basis that the angle between the first fixation section  71  and the second fixation section  72  is 118°-145°, i.e., the angle between the first heat exchange section  41  and the second heat exchange section  42  is 118°-145°, by further design the sum of the number of first tube holes  711  on the first fixation section  71  and the number of second tube holes  721  on the second fixation section  72  to be 12-15, it is possible to further improve the smoothness of the flow line of the airflow at the second fixation section  72 , achieve the objects of reducing noise, reducing the loss in air pressure and reducing the loss in air volume, and effectively ensure the heat exchange efficiency of the heat exchanger  40 , so as to realize comprehensive improvement of the energy efficiency of the equipment. 
     In some embodiments of the present disclosure, as shown in  FIG. 7  to  FIG. 10 , the fixation frame  70  is provided with a mounting structure for mounting and fixing the fixation frame  70 . 
     Specifically, for example, the mounting structure comprises a first connection edge  731  of the fixation frame  70 , the first connection edge  731  is used for fixed connection with a volute assembly  63  of the window air conditioner to realize the positioning and assembly of the fixation frame  70  and the volute assembly  63 , as shown in  FIG. 7  to  FIG. 10 . More specifically, for example, the first connection edge  731  is provided with a threaded hole  74 , the volute assembly  63  is provided with a through hole or a screw hole, and the first connection edge  731  is fixed to the volute assembly  63  by threaded connection with a fastener such as a screw. As another example, the mounting structure comprises a second connection edge  732  on the fixation frame  70 , the second connection edge  732  is used for fixed connection with the base  10  of the window air conditioner to realize the positioning and assembly of the fixation frame  70  and the base  10 , as shown in  FIG. 7  to  FIG. 10 . More specifically, for example, the second connection edge  732  is provided with a threaded hole  74 , the base  10  is provided with a through hole  43  or a screw hole, and the second connection edge  732  is fixed to the base  10  by threaded connection with a fastener such as a screw. In this design, by providing a mounting structure on the fixation frame  70  for the assembly of the fixation frame  70  with other components of the window air conditioner, the assembly accuracy and efficiency between the heat exchanger  40  and other devices of the window air conditioner can be improved. 
     In a specific embodiment of the present disclosure, the fixation frame  70  is provided at the right side of the first heat exchange section  41  and the second heat exchange section  42  to fix the first heat exchange section  41  and the second heat exchange section  42 . 
     In a specific embodiment of the present disclosure, the fixation frame  70  is provided at the left side of the first heat exchange section  41  and the second heat exchange section  42  to fix the first heat exchange section  41  and the second heat exchange section  42 . 
     In a specific embodiment of the present disclosure, the fixation frame  70  is provided at both the left side and the right side of the first heat exchange section  41  and the second heat exchange section  42  to fix the first heat exchange section  41  and the second heat exchange section  42 . 
     As shown in  FIG. 11  to  FIG. 15 , in the window air conditioner provided by the embodiment of the present disclosure, the base  10  comprises a bracket and a water receiving groove  17  that are integrally formed with the base  10 . Specifically, the bracket is provided with a fixation structure for fixing the heat exchanger  40 . The fixation structure comprises a screw hole structure  19 , the heat exchanger  40  is provided with a through hole  43  corresponding to the screw hole structure  19 , and a threaded fastener is passed through the through hole  43  and threadedly connected to the screw hole structure  19 . 
     The bracket further comprises two supporting plates  13  that are spaced apart from each other, and a rear abutment plate  14  located at one side of the two supporting plates  13 , the heat exchanger  40  is supported by the two supporting plates  13 , wherein plate edges of the two supporting plates  13  that are used for supporting the heat exchanger  40  are configured to be inclined shape, the portions of the heat exchanger  40  supported by the supporting plate  13  have an inclined shape adapted to the plate edges, and a bottom end portion of the heat exchanger  40  abuts against the rear abutment plate  14 . 
     In this solution, the bracket and the water receiving groove  17  are integrally formed at the base  10  of the window air conditioner, wherein the water receiving groove  17  of the base  10  can collect the condensed water dripping from the heat exchanger  40 , thereby reducing the possibility of failure of the window air conditioner due to the condensed water. The base  10  is integrally molded with the bracket and the water receiving groove  17 , which reduces the number of parts of the window air conditioner, makes it more convenient to produce and assemble the window air conditioner, is also conducive in ensuring the assembly accuracy between the heat exchanger  40  and the water receiving groove  17 , prevents the problem of water leakage caused by deviation of the heat exchanger  40  or the water receiving groove  17 , and ensures the base  10 , the water receiving groove  17  and the bracket to have relatively high connection strength therebetween, and to be less likely to be deformed or even broken. 
     At the time of mounting the heat exchanger  40 , after the positioning of the heat exchanger  40  is completed, the threaded fastener is passed through the through hole  43  on the heat exchanger  40  and threadedly connected to the screw hole structure  19 , so as to realize fixed connection between the heat exchanger  40  and the supporting plates  13 . The use of the screw hole structure  19  and the threaded fastener leads to a simple structure, convenient assembly and disassembly, and more reliable connection. 
     Moreover, by disposing the heat exchanger  40  inclinedly on the supporting plates  13 , the condensed water on the heat exchanger  40  can drip from the heat exchanger  40  more smoothly and fall into the water receiving groove  17 , so as to reduce the possibility of accumulation of the condensed water on the surface of the heat exchanger  40 , thereby reducing the influence of the condensed water on the heat exchange performance of the heat exchanger  40  and improving the stability of the heat exchange performance of the heat exchanger  40 . In addition, by making the bottom end portion of the heat exchanger  40  abut against the rear abutment plate  14  after the heat exchanger  40  is connected to the two supporting plates  13 , the rear abutment plate  14  can limit the displacement of the heat exchanger  40  towards one side of the rear abutment plate, which improves the reliability of the connection between the heat exchanger  40  and the base  10 . 
     In the present embodiment, as shown in  FIG. 13  and  FIG. 14 , the spacing between the two supporting plates  13  is adapted to the width of the heat exchanger  40  such that the supporting position at which the supporting plates  13  support the heat exchanger  40  is adjacent to the side plate of the heat exchanger  40 . In this way, the influence of the two supporting plates  13  on the air intake of the heat exchanger  40  can be reduced, that is, the wind resistance of the heat exchanger  40  can be reduced, which facilitates improving the air intaking efficiency of the heat exchanger  40  and further improves the heat exchange performance of the heat exchanger  40 . 
     In the above, the supporting plate  13  and the side plate are in contact with each other, or have a non-zero interval therebetween. 
     In the present embodiment, as shown in  FIG. 11  to  FIG. 14 , the two supporting plates  13  are configured such that when the heat exchanger  40  is supported by the two supporting plates  13 , the two supporting plates  13  are located between two side plates of the heat exchanger  40 , and the two side plates of the heat exchanger  40  clamp the two supporting plates  13  towards each other. In this way, the two supporting plates  13  are clamped against each other by the two side plates of the heat exchanger  40 , and the displacement of the heat exchanger  40  in the width direction can be restricted by the abutment between the supporting plates  13  and the two side plates, thereby improving the reliability of the connection between the heat exchanger  40  and the supporting plates  13 , and further improving the reliability of the connection between the heat exchanger  40  and the base  10 . 
     In the present embodiment, as shown in  FIG. 11 ,  FIG. 12  and  FIG. 13 , the supporting plates  13  and the rear abutment plate  14  are each provided with reinforcing ribs  15 . The reinforcing ribs  15  that are provided at the supporting plate  13  in an intersected manner can improve the strength of the supporting plate  13  and reduce the possibility of bending of the supporting plate  13 , thereby improving the reliability of the connection between the heat exchanger  40  and the base  10 . The reinforcing ribs  15  provided at intervals on the rear abutment plate  14  can improve the strength of the rear abutment plate  14 , so as to reduce the possibility of the heat exchanger  40  moving towards one side of the rear abutment plate  14  and improve the reliability of the connection between the heat exchanger  40  and the base  10 . In the present embodiment, by providing the reinforcing ribs  15  on both the supporting plates  13  and the rear abutment plate  14 , the reliability of the connection between the heat exchanger  40  and the base  10  are greatly improved. 
     In the present embodiment, as shown in  FIG. 11 ,  FIG. 12  and  FIG. 14 , the bracket is provided with a first fixation member for mounting the filter  30 . More specifically, the first fixation member comprises a guide rail groove  11  or a guide rail, and the filter  30  is provided with a track  31  configured to be slidably connected to the guide rail groove  11  or the guide rail. 
     The first fixation member is the guide rail groove  11  or the guide rail, which is selected according to the use environment to meet different use needs. The track  31  is configured according to whether the first fixation member is the guide rail groove  11  or the guide rail. For example, when the first fixation member is the guide rail groove  11 , the track  31  is accordingly a guide rail capable of being slidably connected with the guide rail groove  11 , and when the first fixation member is a guide rail, the track  31  is accordingly a guide rail groove capable of being slidably connected with the guide rail. 
     In other embodiments, the first fixation member may be configured to comprise a clamping groove, the filter  30  is provided with a hook that cooperates with the clamping groove, and the bracket and the filter  30  are fixedly connected by the cooperation between the clamping groove and the hook. The bracket and the filter  30  are fixedly connected by the cooperation between the hook and the clamping groove, which leads to convenient assembly and disassembly of the bracket and the filter  30  and facilitates the cleaning of the filter  30  during use. 
     In the present embodiment, as shown in  FIG. 11 ,  FIG. 13 ,  FIG. 14  and  FIG. 15 , the base  10  is an indoor-side base  10  of the window air conditioner, wherein the base  10  is provided with a water discharge opening  18  for discharging water to the outdoor side of the window air conditioner, and the water discharge opening  18  communicates with the water receiving groove  17 . 
     In the above, the water receiving groove  17  in this embodiment is composed of the rear abutment plate  14 , the two supporting plates  13 , and protruding ribs on the base  10  that are connected to the two supporting plates  13 . 
     As shown in  FIG. 6  to  FIG. 10 , an embodiment of the present disclosure further provides a fixation frame  70  for the heat exchanger  40 , the heat exchanger  40  adapted thereto comprises a first heat exchange section  41  and a second heat exchange section  42 , wherein the fixation frame  70  has a two-section structure and comprises a first fixation section  71  for fixing the first heat exchange section  41  and a second fixation section  72  for fixing the second heat exchange section  42 , and the angle α between the first fixation section  71  and the second fixation section  72  is 118°-145°. 
     For the fixation frame  70  of the heat exchanger  40  provided by the above embodiment of the present disclosure, a first fixation section  71  and a second fixation section  72  are provided to fix the first heat exchange section  41  and the second heat exchange section  42 , respectively. In this way, the assembled and constructed heat exchanger  40  as a whole can be shaped to have an angle of 118°-145°, which achieves a good shaping effect on the heat exchanger  40  and enables convenient assembly. Moreover, by controlling the angle between the first heat exchange section  41  and the second heat exchange section  42  correspondingly to be 118°-145° by the fixation frame  70 , the objects of reducing the space occupation rate of the heat exchanger  40  and reducing the overall machine size can be achieved. Furthermore, when the heat exchanger  40  is in the range of the angle of 118°-145°, the airflow at the heat exchanger  40  has a smoother flow line than in the case of any other configuration, the airflow noise is small, the loss in air pressure and air volume is small, and the energy efficiency attenuation is not obvious, which achieves the comprehensive object of giving consideration to product size, operation noise and energy efficiency. 
     Further, as shown in  FIG. 8 , the angle α between the first fixation section  71  and the second fixation section  72  is 130.5°-140.5°. In this way, the objects of reducing the space occupation rate of the heat exchanger  40  and reducing the overall machine size are achieved, and the smoothness of the flow line of the airflow at the heat exchanger  40  is further improved, the airflow noise is smaller, the loss in air pressure and air volume is further reduced, and the energy efficiency attenuation is not obvious, thereby achieving the comprehensive object of giving consideration to product size, operation noise and energy efficiency. 
     In some embodiments, the angle α between the first fixation section  71  and the second fixation section  72  is 133.5°-147.5°. In some embodiments, the angle α between the first fixation section  71  and the second fixation section  72  is 135.5°. 
     Further, the first heat exchange section  41  and the second heat exchange section  42  are each provided with a plurality of heat exchange tubes, wherein as shown in  FIG. 8  to  FIG. 10 , the first fixation section  71  is provided with tube holes configured to avoid the heat exchange tubes of the first heat exchange section  41 , and the second fixation section  72  is provided with tube holes configured to avoid the heat exchange tubes of the second heat exchange section  42 . In some embodiments, as shown in  FIG. 8 ,  FIG. 9  and  FIG. 10 , the tube holes on the first fixation section  71  and/or the second fixation section  72  are tube holes suitable for avoiding U-shaped heat exchange tubes. 
     Further, as shown in  FIG. 7 ,  FIG. 8  and  FIG. 9 , the tube holes on the first fixation section  71  are arranged in two rows, or as shown in  FIG. 10 , the tube holes on the first fixation section  71  are arranged in three rows. 
     In some embodiments, as shown in  FIG. 7 ,  FIG. 8 ,  FIG. 9  and  FIG. 10 , the tube holes on the second fixation section  72  are arranged in two rows. Of course, the solution is not limited thereto, and a person skilled in the art may also design the tube holes on the second fixation section  72  to be arranged in three rows according to the needs. 
     Further, as shown in  FIG. 7 ,  FIG. 8  and  FIG. 9 , the sum of the number of tube holes on the first fixation section  71  and the number of tube holes on the second fixation section  72  is 12, or as shown in  FIG. 10 , the sum of the number of tube holes on the first fixation section  71  and the number of tube holes on the second fixation section  72  is 15. Of course, the solution is not limited thereto, and a person skilled in the art may also design the sum of the number of tube holes on the first fixation section  71  and the number of tube holes on the second fixation section  72  to be 13 or 14 according to the needs. 
     Further, as shown in  FIG. 7  to  FIG. 10 , the fixation frame  70  is provided with a mounting structure for mounting and fixing the fixation frame  70 . Specifically, for example, the mounting structure comprises a first connection edge  731  on the fixation frame  70 , the first connection edge  731  is used for fixed connection with a volute assembly  63  of the air conditioner to realize the positioning and assembly of the fixation frame  70  and the volute assembly  63 , as shown in  FIG. 7  to  FIG. 10 . More specifically, for example, the first connection edge  731  is provided with a threaded hole  74 , the volute assembly  63  is provided with a through hole  43  or a screw hole, and the first connection edge  731  is fixed to the volute assembly  63  by threaded connection with a fastener such as a screw. As another example, the mounting structure comprises a second connection edge  732  on the fixation frame  70 , the second connection edge  732  is used for fixed connection with the base  10  of the air conditioner to realize the positioning and assembly of the fixation frame  70  and the base  10 , as shown in  FIG. 7  to  FIG. 10 . More specifically, for example, the second connection edge  732  is provided with a threaded hole  74 , the base  10  is provided with a through hole  43  or a screw hole, and the second connection edge  732  is fixed to the base  10  by threaded connection with a fastener such as a screw. In this design, by providing a mounting structure on the fixation frame  70  for the assembly of the fixation frame  70  with other components of the air conditioner, the assembly accuracy and efficiency between the heat exchanger  40  and other devices of the air conditioner can be improved. 
     As shown in  FIG. 9 , an embodiment of the present disclosure further provides a heat exchanger  40 , comprising: a first heat exchange section  41 ; a second heat exchange section  42 ; and the fixation frame  70  of the heat exchanger  40  of any of the above embodiments, wherein the first heat exchange section  41  is connected to the first fixation section  71  of the fixation frame  70 , the second heat exchange section  42  is connected to the second fixation section  72  of the fixation frame  70 , and the angle between the first heat exchange section  41  and the second heat exchange section  42  is the same as the angle between the first fixation section  71  and the second fixation section  72 . 
     The heat exchanger  40  described in the above embodiment of the present disclosure is provided with the fixation frame  70  of the heat exchanger  40  described in any of the above embodiments, and therefore has all of the above advantageous effects, which will not be described here. 
     In some embodiments, the fixation frame  70  is provided at the right side of the first heat exchange section  41  and the second heat exchange section  42  to fix the first heat exchange section  41  and the second heat exchange section  42 . Of course, it is also feasible to design that the fixation frame  70  is provided at the left side of the first heat exchange section  41  and the second heat exchange section  42  to fix the first heat exchange section  41  and the second heat exchange section  42 , or even that the fixation frame  70  is provided at both the left side and the right side of the first heat exchange section  41  and the second heat exchange section  42  to fix the first heat exchange section  41  and the second heat exchange section  42 . 
     As shown in  FIG. 6 ,  FIG. 7 ,  FIG. 8  and  FIG. 10 , an embodiment of the present disclosure further provides an air conditioner, comprising the heat exchanger described in any of the above embodiments. 
     The air conditioner described in the above embodiment of the present disclosure is provided with the heat exchanger described in any of the above embodiments, and therefore has all of the above advantageous effects, which will not be described here. 
     Optionally, the air conditioner is a window air conditioner. 
     As shown in  FIG. 11  to  FIG. 15 , an embodiment of the present disclosure further provides a base  10 , comprising a bracket and a water receiving groove  17  that are integrally formed therewith. 
     Specifically, the bracket is provided with a fixation structure for fixing the heat exchanger  40 . The fixation structure comprises a screw hole structure  19 , the heat exchanger  40  is provided with a through hole  43  corresponding to the screw hole structure  19 , and a threaded fastener is passed through the through hole  43  and threadedly connected to the screw hole structure  19 . The bracket further comprises two supporting plates  13  that are spaced apart from each other, and a rear abutment plate  14  located at one side of the two supporting plates  13 , the heat exchanger  40  is supported by the two supporting plates  13 , wherein plate edges of the two supporting plates  13  that are used for supporting the heat exchanger  40  are configured to be inclined shape, the portions of the heat exchanger  40  supported by the supporting plates  13  have an inclined shape adapted to the plate edges, and a bottom end portion of the heat exchanger  40  abuts against the rear abutment plate  14 . 
     In some embodiments, as shown in  FIG. 13  and  FIG. 14 , the spacing between the two supporting plates  13  is adapted to the width of the heat exchanger  40  such that the supporting position at which the supporting plates  13  support the heat exchanger  40  is adjacent to the side plate of the heat exchanger  40 , wherein the supporting plate  13  and the side plate are in contact with each other, or have a non-zero interval therebetween. 
     In some embodiments, as shown in  FIG. 11  to  FIG. 14 , the two supporting plates  13  are configured such that when the heat exchanger  40  is supported by the two supporting plates  13 , the two supporting plates  13  are located between two side plates of the heat exchanger  40 , and the two side plates of the heat exchanger  40  clamp the two supporting plates  13  towards each other. In this way, the two supporting plates  13  are clamped against each other by the two side plates of the heat exchanger  40 , and the displacement of the heat exchanger  40  in the width direction can be restricted by the abutment between the supporting plates  13  and the two side plates, thereby improving the reliability of the connection between the heat exchanger  40  and the supporting plates  13 , and further improving the reliability of the connection between the heat exchanger  40  and the base  10 . 
     In some embodiments, as shown in  FIG. 11  to  FIG. 13 , the supporting plate  13  and the rear abutment plate  14  are each provided with reinforcing ribs  15 . 
     In some embodiments, as shown in  FIG. 11 ,  FIG. 12  and  FIG. 14 , the bracket is provided with a first fixation member for mounting the filter  30 . More specifically, the first fixation member comprises a guide rail groove  11  or a guide rail, and the filter  30  is provided with a track  31  configured to be slidably connected to the guide rail groove  11  or the guide rail. 
     The first fixation member is the guide rail groove  11  or the guide rail, which is selected according to the use environment to meet different use needs. The track  31  is configured according to whether the first fixation member is the guide rail groove  11  or the guide rail. For example, when the first fixation member is the guide rail groove  11 , the track  31  is accordingly a guide rail capable of being slidably connected with the guide rail groove  11 , and when the first fixation member is a guide rail, the track  31  is accordingly a guide rail groove capable of being slidably connected with the guide rail. 
     Of course, it is also feasible to design that the first fixation member comprises a clamping groove, the filter  30  is provided with a hook that cooperates with the clamping groove, and the bracket and the filter  30  are fixedly connected by the cooperation between the clamping groove and the hook. 
     In some embodiments, as shown in  FIG. 11 ,  FIG. 13 ,  FIG. 14  and  FIG. 15 , the base  10  is an indoor-side base of the window air conditioner, wherein the base  10  is provided with a water discharge opening  18  for discharging water to the outdoor side of the window air conditioner, and the water discharge opening  18  communicates with the water receiving groove  17 . 
     In some embodiments, the water receiving groove  17  is composed of the rear abutment plate  14 , the two supporting plates  13 , and protruding ribs on the base  10  that are connected to the two supporting plates  13 . 
     In the present disclosure, the terms “first”, “second”, and “third” are used for the purpose of description only, and cannot be understood as indicating or implying relative importance; the term “a plurality of” means two or more, unless otherwise explicitly defined. The terms “mounting”, “connected”, “connection”, “fixing” and the like should be understood in a broad sense. For example, “connection” may be a fixed connection, a removable connection or an integral connection; the term “connected” may refer to being directly connected and may also refer to being indirectly connected through an intermediary. A person of ordinary skills in the art could understand the specific meaning of the terms in the present disclosure according to specific situations. 
     In the description of the present disclosure, it should be understood that the orientation or position relationships indicated by the terms “upper”, “lower”, “left”, “right”, “front”, “back” and the like are the orientation or position relationships based on what is shown in the drawings, are merely for the convenience of describing the present disclosure and simplifying the description, and do not indicate or imply that the device or unit referred to must have a particular direction and is constructed and operated in a specific orientation, and thus cannot be understood as the limitation of the present disclosure. 
     In the description of the present specification, the descriptions of the terms “one embodiment”, “some embodiments” and “specific embodiments” and the like mean that specific features, structures, materials or characteristics described in conjunction with the embodiment(s) or example(s) are included in at least one embodiment or example of the present disclosure. In the specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the particular features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. 
     The descriptions above are only some embodiments of the present disclosure, which are not used to limit the present disclosure. For a person skilled in the art, the present disclosure may have various changes and variations. Any modifications, equivalent substitutions, improvements, etc., within the spirit and principle of the present disclosure shall all be included in the scope of the present disclosure.