Patent Publication Number: US-11655987-B2

Title: Window air conditioner with mounting base

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
     This application is a continuation of International Application No. PCT/CN2020/077618, filed on Mar. 3, 2020, which claims priority to Chinese Application Nos. 201911218447.5 and 201922132503.5, filed on Nov. 29, 2019, the entire contents of all of which are incorporated herein by reference. 
    
    
     TECHNICAL FIELD 
     The present disclosure relates to the technical field of air conditioners, in particular to a window air conditioner. 
     BACKGROUND 
     In the related art, the window air conditioner is mounted at the mounting opening of the wall. The window air conditioners usually use sealing member to seal the gap between the inner wall of the mounting opening and the shielding member (such as a window shutter, a curtain, a sash, etc.) on the mounting opening to reduce leakage of indoor cooling or heat to the outdoor through the gap. However, conventional sealing member is generally mounted at the window air conditioner through the coordination of multiple components. Moreover, the sealing member needs to be fixedly connected to these components by using a screw structure or a clamping structure, such that the assembly of the sealing member is more complicated and cumbersome, and the assembly efficiency is lower. 
     SUMMARY 
     The main objective of the present disclosure is to provide a window air conditioner, which aims to simplify the assembly method of the sealing member, thereby improving the assembly efficiency of the whole machine. 
     In order to achieve the above objective, the present disclosure provides a window air conditioner, including: a housing including a separation groove, the separation groove being configured for a shielding member located at a mounting opening of a wall to extend into; a mounting base movably mounted in the separation groove; and a sealing member connected with the mounting base through insertion, the sealing member being in interference fit with the mounting base by deformation, and the sealing member being driven by the mounting base to switch between a storage state and a working state; in the storage state, the sealing member is received in the separation groove; in the working state, the sealing member is configured to extend laterally from the separation groove, and abut on the shielding member and/or an inner wall of the mounting opening. 
     In some embodiments, the mounting base includes a bottom mounting plate and two side mounting plates on opposite sides of the bottom mounting plate, the bottom mounting plate being rotatably mounted in the separation groove, a mounting slot for receiving the sealing member being formed among the bottom mounting plate and the two side mounting plates. 
     In some embodiments, a guiding protrusion bar protrudes on an inner wall surface of the side mounting plate, the guiding protrusion bar being elongated and configured to extend along an insertion direction of the mounting slot. 
     In some embodiments, the guiding protrusion bar includes a root connected to the side mounting plate and a top away from the side mounting plate, a thickness of the guiding protrusion bar gradually decreasing from the root to the top. 
     In some embodiments, the guiding protrusion bar is inclined towards a bottom wall of the mounting slot from the root to the top. 
     In some embodiments, a guiding slope is formed at an end of the guiding protrusion bar, the guide slope being inclined along the insertion direction of the mounting slot. 
     In some embodiments, an outer wall surface of the side mounting plate is further provided with a groove, the groove being elongated and configured to extend along the insertion direction of the mounting slot. 
     In some embodiments, the bottom mounting plate of the mounting base is provided with two rotation arms protruding downwards, a fixation base is mounted in the separation groove, and the fixation base is rotatably connected with the rotation arm. 
     In some embodiments, the fixation base includes a bottom fixation plate and two side fixation plates on opposite sides of the bottom fixation plate, a receiving groove being formed between the two side fixation plates, the rotation arm being configured to extend into the receiving groove, one of the side fixation plate and the rotation arm being configured to form a shaft hole, the other of the side fixation plate and the rotation arm being configured to form a rotation shaft fit in the shaft hole. 
     In some embodiments, a rotation angle of the rotation arm of the mounting base is adjustable. 
     In some embodiments, one of the side fixation plate and the rotation arm is formed with a positioning protrusion on a periphery of the rotation shaft, and the other of the side fixation plate and the rotation arm is formed with positioning grooves on a periphery of the shaft hole, the positioning protrusion is cooperated with one of the positioning grooves to position the mounting base when the mounting base rotates to a preset angle. 
     In some embodiments, a rotation portion is formed at a tail end of the rotation arm, the rotation portion having two opposite side walls, the rotation shaft protruding on one of the side walls; a boss towards the receiving groove protrudes on the side fixation plate, the boss being formed with the shaft hole for receiving the rotation shaft. 
     In some embodiments, a connection plate is formed between two side walls of the rotation portion, and a hollow groove is formed between two adjacent connection plates. 
     In some embodiments, the fixation base further includes two rib plates on a surface of the side fixation plate away from the boss, and a cover plate on a side edge of the side fixation plate away from the bottom fixation plate, the cover plate being connected to the two rib plates and enclosed with the two rib plates to form an avoiding groove corresponding to the shaft hole. 
     In some embodiments, a lower end of the rib plate is chamfered to form a guiding portion at a chamfered position of the rib plate. 
     In some embodiments, a sink groove for mounting the fixation base is provided at a bottom of the separation groove, the sink groove being provided with a drain hole, the drain hole being configured to drain water outdoors or in a water receiving tray. 
     In some embodiments, the sealing member is made of a flexible material, to enable the sealing member to deform flexibly; or the sealing member is made of an elastic material, to enable the sealing member to deform elastically. 
     In some embodiments, a length of the sealing member is varied through cutting the sealing member. 
     In some embodiments, the window air conditioner further includes a compressor, an outdoor heat exchanger, an outdoor fan, an indoor heat exchanger, and an indoor fan; the housing is divided into an indoor housing and an outdoor housing by the separation groove, the compressor, the outdoor heat exchanger and the outdoor fan being mounted in the outdoor housing, and the indoor heat exchanger and the indoor fan being mounted in the indoor housing. 
     In the technical solutions of the present disclosure, the sealing member is connected with the mounting base through insertion, the sealing member is in interference fit with the mounting base by elastic or flexible deformation, such that the assembly of the sealing member and the mounting base does not require components such as a screw structure or a clamping structure, the assembly process is relatively simple, and the operation difficulty is low, which helps to improve assembly efficiency. 
     Besides, the sealing member is driven by the mounting base to switch between a storage state and a working state. In the storage state, the sealing member is received in the separation groove to fully utilize the separation groove to store the sealing member, which reduces the volume of the window air conditioner and is convenient for storage or package and transportation. In the working state, the sealing member is configured to extend laterally from the separation groove, and is configured for abutting on the shielding member and/or an inner wall of the window to seal the gap between the shielding member and the inner wall of the mounting opening, and to reduce the leakage of cold or heat to the outside, and to prevent water in the outdoor environment from falling into the room from the gap, which greatly enhances the sealing effect. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       In order to more clearly illustrate the embodiments of the present disclosure, the drawings used in the embodiments will be briefly described below. Obviously, the drawings in the following description are only some embodiments of the present disclosure. It will be apparent to those skilled in the art that other figures can be obtained from the structures illustrated in the drawings without inventive effort. 
         FIG.  1    is a schematic diagram showing a window air conditioner mounted at a wall according to the present disclosure; 
         FIG.  2    is a schematic diagram showing a sealing member of the window air conditioner in a storage state according to the present disclosure; 
         FIG.  3    is a schematic diagram showing switching the sealing member of the window air conditioner in  FIG.  2    to the working state; 
         FIG.  4    is an exploded view of the sealing member and a mounting base of the window air conditioner in  FIG.  2   ; 
         FIG.  5    is an enlarged view of portion A in  FIG.  4   ; 
         FIG.  6    is a schematic structural diagram showing the mounting base in  FIG.  4   ; 
         FIG.  7    is a schematic structural diagram showing the mounting base of  FIG.  6    from another perspective; 
         FIG.  8    is an enlarged view of portion B in  FIG.  7   ; 
         FIG.  9    is a front view of the mounting base in  FIG.  6    along its insertion direction; 
         FIG.  10    is a schematic diagram showing the rotation connection of the mounting base and the fixation base in  FIG.  9   ; 
         FIG.  11    is a schematic structural diagram showing the fixation base in  FIGS.  4   ; and  
         FIG.  12    is a schematic diagram showing a sink groove according to the present disclosure.  
     
    
    
     DESCRIPTION OF REFERENCE NUMERALS 
     
       
         
           
               
               
               
             
               
                   
                 TABLE 1 
               
               
                   
                   
               
               
                   
                 Reference 
                   
               
               
                   
                 Numeral 
                 Name 
               
               
                   
                   
               
             
            
               
                   
               
            
           
           
               
               
               
            
               
                   
                 10 
                 window air conditioner 
               
               
                   
                 20 
                 wall 
               
               
                   
                 30 
                 shielding member 
               
               
                   
                 100 
                 housing 
               
               
                   
                 110 
                 indoor housing 
               
               
                   
                 120 
                 outdoor housing 
               
               
                   
                 200 
                 separation groove 
               
               
                   
                 210 
                 sink groove 
               
               
                   
                 300 
                 mounting base 
               
               
                   
                 310 
                 bottom mounting plate 
               
               
                   
                 320 
                 side mounting plate 
               
               
                   
                 321 
                 guiding protrusion bar 
               
               
                   
                 3211 
                 root 
               
               
                   
                 3212 
                 top 
               
               
                   
                 322 
                 guiding slope 
               
               
                   
                 323 
                 groove 
               
               
                   
                 324 
                 recess 
               
               
                   
                 330 
                 mounting slot 
               
               
                   
                 340 
                 rotation arm 
               
               
                   
                 341 
                 rotation shaft 
               
               
                   
                 342 
                 positioning protrusion 
               
               
                   
                 343 
                 rotation portion 
               
               
                   
                 301 
                 side wall 
               
               
                   
                 302 
                 connection plate 
               
               
                   
                 303 
                 hollow groove 
               
               
                   
                 400 
                 sealing member 
               
               
                   
                 500 
                 fixation base 
               
               
                   
                 510 
                 bottom fixation plate 
               
               
                   
                 520 
                 side fixation plate 
               
               
                   
                 521 
                 shaft hole 
               
               
                   
                 522 
                 positioning groove 
               
               
                   
                 523 
                 boss 
               
               
                   
                 530 
                 rib plate 
               
               
                   
                 531 
                 guiding portion 
               
               
                   
                 540 
                 cover plate 
               
               
                   
                 501 
                 receiving groove 
               
               
                   
                 502 
                 avoiding groove 
               
               
                   
                   
               
            
           
         
       
     
     The realization of the objective, functional characteristics, advantages of the present disclosure are further described with reference to the accompanying drawings. 
     DETAILED DESCRIPTION OF THE EMBODIMENTS 
     The technical solutions of the embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. It is obvious that the embodiments to be described are only some rather than all of the embodiments of the present disclosure. All other embodiments obtained by persons skilled in the art based on the embodiments of the present disclosure without creative efforts shall fall within the scope of the present disclosure. 
     It should be noted that, if there is directional indication (such as up, down, left, right, front, rear . . . ) in the embodiments of the present disclosure, the directional indication is only used to explain the relative positional relationship and movement between the components in a certain posture. If the specific posture changes, the directional indication changes accordingly. 
     In addition, the descriptions, such as “first,” “second” in the embodiments of the present disclosure, are only for descriptive purposes, and cannot be understood as indicating or suggesting relative importance or impliedly indicating the number of the indicated technical feature. Therefore, the feature associated with the “first,” the “second” can expressly or impliedly include at least one such feature. Besides, the technical solutions of the various embodiments can be combined with each other, as long as they do not conflict with each other. 
     Referring to  FIG.  1   , the present disclosure provides a window air conditioner  10 . The window air conditioner  10  may be mounted at the mounting opening of the wall to cool or heat the indoor environment. The window air conditioner  10  includes a sealing member  400 , and the assembly method of the sealing member  400  can be simplified, thereby improving the assembly efficiency of the whole machine. 
     Referring to  FIG.  1    to  FIG.  3   , in an embodiment of the present disclosure, the window air conditioner  10  includes a housing  100 , a mounting base  300 , and a sealing member  400 . The housing  100  includes a separation groove  200 , the separation groove  200  is configured for a shielding member  30  of a window to extend into. The mounting base  300  is movably mounted in the separation groove  200 . The sealing member  400  is connected with the mounting base  300  through insertion, the sealing member  400  is in interference fit with the mounting base  300  by deformation, and the sealing member  400  is driven by the mounting base  300  to switch between a storage state and a working state. In the storage state, the sealing member  400  is received in the separation groove  200 ; in the working state, the sealing member  400  is configured to extend laterally from the separation groove  200 , and abut on the shielding member  30  and/or an inner wall of the window. In some embodiments, in the working state, the sealing member  400  is configured to extend laterally from the separation groove  200 , and abut on an inner wall of a window frame. 
     Specifically, top and both sides of the separation groove  200  of the housing  100  are open, and the housing  100  is partitioned by the separation groove  200  into an indoor housing  110  and an outdoor housing  120 . The window air conditioner  10  further includes a compressor, an outdoor heat exchanger, an outdoor fan, an indoor heat exchanger, and an indoor fan. The compressor, the outdoor heat exchanger, and the outdoor fan are mounted in the outdoor housing  120 . The indoor heat exchanger and the indoor fan are mounted in the indoor housing  110 . 
     After the window air conditioner  10  is mounted at the mounting opening of the wall, the indoor housing  110  is located indoors, and the outdoor housing  120  is located outdoors. This not only can block the noise from the outdoor to the indoor, to achieve the noise reduction effect, but also can allow the shielding member  30  mounted at the mounting opening to extend into the separation groove  200  to reduce the interference of the window air conditioner  10  on the shielding member  30 . It should be noted that the shielding member  30  may be a curtain, a window shutter, a sash, etc., that blocks light, or other protective window panels that may block external objects from entering the room. 
     There are two sealing members  400 . The two sealing members  400  are provided at both ends of the separation groove  200 . The sealing member  400  is elongated. The sealing member  400  has multiple side surfaces, and the multiple side surfaces have a larger outer surface area, which is beneficial to increase the sealing surface. The sealing member  400  is connected with the mounting base  300  through insertion, which may be specifically but not limited to: one of the sealing member  400  and the mounting base  300  is provided with a slot, and the other is inserted in the slot. Since the sealing member  400  can be elastically or flexibly deformed, during the process of inserting and connecting the sealing member  400  and the mounting base  300 , the sealing member  400  may be flexibly or elastically deformed, such that the insertion portion between the sealing member  400  and the mounting base  300  is tightly connected, thereby making it difficult for the sealing member  400  and the mounting base  300  to separate, and achieving interference fit fixing. 
     To facilitate the illustration of the installation of the window air conditioner  10 , a square mounting opening in the wall  20  is used as an example for explanation: the inner wall of the mounting opening includes a bottom wall, a top wall, and two opposite side walls. The shielding member  30  is usually provided at the top wall of the mounting opening, and can move up and down to block or open the mounting opening. After the window air conditioner  10  is mounted in the mounting opening, the sealing member  400  is moved to the working state through the mounting base  300 , so that the sealing member  400  protrudes laterally from the separation groove  200  of the window air conditioner  10 , and the bottom surface of the sealing member  400  abuts against the bottom wall of the mounting opening. Then, the shielding member  30  is pulled down to extend into the separation groove  200  of the window air conditioner  10  until the lower edge of the shielding member  30  contacts and abuts against the upper surface of the sealing member  400 . The sealing member  400  blocks and seals the gap between the shielding member  30  and the bottom wall of the mounting opening, and reduces the cooling or heat leakage in the room from the space to the outside. When the window air conditioner  10  is not needed or is being transported, the sealing member  400  is moved to the storage state to reduce the space occupied by the sealing member  400 , which is convenient for the window air conditioner  10  to be received or packaged. 
     During the process of installing the window air conditioner  10  described above, compared to the related art, which can only be pulled to the top surface of the window air conditioner  10 , the shielding member  30  in this embodiment can be inserted into the window air conditioner  10 , such that the shielding member  30  can block the space between the two sides of the window air conditioner  10  and the bottom wall of the mounting opening, and increase the blocking area of the shielding member  30 . 
     In the technical solutions of the present disclosure, the sealing member  400  is connected with the mounting base  300  through insertion, the sealing member  400  is in interference fit with the mounting base  300  by deformation, such that the assembly of the sealing member  400  and the mounting base  300  does not require components such as a screw structure or a clamping structure, the assembly process is relatively simple, and the operation difficulty is low, which helps to improve assembly efficiency. The deformation may be flexible deformation or elastic deformation. 
     Further, the sealing member  400  is driven by the mounting base  300  to switch between a storage state and a working state. In the storage state, the sealing member  400  is received in the separation groove  200  to fully utilize the separation groove  200  to store the sealing member  400 , which reduces the volume of the window air conditioner  10  and is convenient for storage or packaging and transportation. In the working state, the sealing member  400  is configured to extend laterally from the separation groove  200 , and is configured for abutting on the shielding member  30  and/or an inner wall of the window to seal the gap between the shielding member  30  and the inner wall of the mounting opening, and to reduce the leakage of cold or heat to the outside, and to prevent water in the outdoor environment from falling into the room from the gap, which greatly enhances the sealing effect. 
     Besides, since the sealing member  400  can be deformed flexibly or elastically, so that when the shielding member  30  abuts downwards on the surface of the sealing member  400 , the sealing member  400  also undergoes slight deformation, which can make the seal between the sealing member  400  and the shielding member  30  tighter. It is not easy to form a gap between the sealing member  400  and the shielding member  30 , which improves the sealing effect, and effectively enhances the effect of waterproof, leakproof, cold heat. 
     Referring to  FIGS.  4 - 6   , in the above embodiments, there are various design methods for the movable installation method of the mounting base  300 , which is not specifically limited herein. For example, but not limited to: the mounting base  300  is slidably mounted in the separation groove  200 ; or, the mounting base  300  is rotatably mounted in the separation groove  200 ; alternatively, the mounting base  300  may be rollably mounted in the separation groove  200 . It can be selected according to the difficulty of assembly. Specifically, the mounting base  300  is rotatably mounted in the separation groove  200  herein. 
     The specific structure of the mounting base  300  is also not limited here. The corresponding design can be made with reference to the size of the separation groove  200  and the size of the required sealing member  400 . In this embodiment, in order to facilitate the installation of the mounting base  300 , optionally, the mounting base  300  includes a bottom mounting plate  310  and side mounting plates  320  on opposite sides of the bottom mounting plate  310 . The bottom mounting plate  310  is rotatably mounted in the separation groove  200 , and a mounting slot  330  for inserting the sealing member  400  is formed between the bottom mounting plate  310  and the two side mounting plates  320 . 
     Specifically, the bottom mounting plate  310  of the mounting base  300  and the two side mounting plates  320  surround to form a mounting slot  330 . The mounting slot  330  is generally U-shaped, and one end of the mounting slot  330  forms an insertion opening. The end of the mounting base  310  away from the insertion opening is rotatably mounted in the separation groove  200 . When the sealing member  400  is mounted at the mounting base  300 , first, align one end of the sealing member  400  with the insertion opening of the mounting slot  330  on the mounting base  300 , and then apply an external force to the sealing member  400  to press the sealing member  400  into the mounting slot  330 . During the process, the sealing member  400  is deformed by the pressing force of the inner wall of the mounting slot  330 , thus the sealing member  400  is tightly squeezed in the mounting slot  330 , and the sealing member  400  and the mounting base  300  are tightly fitted, not easy to separate, and the installation stability is better. 
     Referring to  FIG.  6    to  FIG.  9   , in an embodiment, in order to facilitate the insertion of the sealing member  400  into the mounting slot  330 , a guiding protrusion bar  321  may protrude on the inner wall surface of the side mounting plate  320 , and the guiding protrusion bar  321  may be elongated and extended in the insertion direction of the mounting slot  330 . The guiding protrusion bar  321  is integrally formed with the side mounting plate  320 . The number of the guiding protrusion bars  321  is plural, and a plurality of guiding protrusion bars  321  are spaced apart from each other along the height direction of the side mounting plate  320 . 
     Therefore, during the process of inserting the sealing member  400  into the mounting slot  330 , the guiding protrusion bars  321  on the two side mounting plates  320  cooperate to limit the insertion direction of the sealing member  400 , such that the sealing member  400  is less likely to be misaligned and deviate from the mounting slot  330 , ensuring that the sealing member  400  is accurately inserted in the mounting slot  330 . Besides, since the guiding protrusion bar  321  protrudes from the inner wall surface of the side mounting plate  320 , the guiding protrusion bars  321  on the two side mounting plates  320  can cooperate to squeeze the sealing member  400 , such that the sealing member  400  is easily deformed by squeezing and tightly cooperates with the mounting base  300 , and is not easy to fall out of the mounting slot  330 . 
     Referring to  FIG.  6    to  FIG.  9   , in an embodiment, the guiding protrusion bar  321  has a root  3211  connected to the side mounting plate  320  and a top  3212  away from the side mounting plate  320 . The thickness of the guiding protrusion bar  321  gradually decreases from the root  3211  to the top  3212 . As shown in  FIG.  9   , h represents the thickness of the guiding protrusion bar  321 . It should be understood that the cross section of the guiding protrusion bar  321  is perpendicular to its length direction, and the thickness of the cross section gradually decreases from the bottom to the top  3212 , thus the top  3212  of the guiding protrusion bar  321  is narrower. As a result, the contact area between the guiding protrusion bar  321  and the sealing member  400  may be reduced. Under the same squeezing force, the pressure exerted by the guiding protrusion bar  321  on the sealing member  400  is greater. Furthermore, in the process of clamping the sealing member  400 , the guiding protrusion bar  321  may squeeze the sealing member  400  to cause a large deformation, thereby further increasing the tightness of the connection between the sealing member  400  and the mounting seat  300 . 
     It is considered here that since the top  3212  of the mounting slot  330  is open, the sealing member  400  may be detached from the top  3212  of the mounting slot  330 . To avoid this, optionally, the guiding protrusion bar  321  is inclined towards the bottom wall of the mounting slot  330  from the root  3211  to the top  3212 . When the sealing member  400  is inserted in the mounting slot  330 , the force of the guiding protrusion bar  321  on the sealing member  400  is directed to the bottom wall of the mounting slot  330 , thereby, the sealing member  400  is tightly limited in the mounting slot  330 , and the sealing member  400  is prevented from coming off from the top  3212  of the mounting slot  330 . 
     Referring to  FIG.  6   , besides, in order to facilitate the insertion of the sealing member  400  into the mounting slot  330 , a guiding slope  322  may be formed at the end of the guiding protrusion bar  321 , and the guiding slope  322  is inclined along the insertion direction of the mounting slot  330 . When the sealing member  400  is mounted at the mounting base  300 , after one end of the sealing member  400  is aligned with the insertion opening of the mounting slot  330  on the mounting base  300 , an external force is applied to push the sealing member  400  into the mounting slot  330 , the outer surface of the sealing member  400  first contacts the guiding slope  322  of the guiding protrusion bar  321 , and then is guided through the guiding slope  322  to enter the mounting slot  330 . The design of the guiding slope  322  can greatly reduce the resistance of the front end of the guiding protrusion bar  321  to the sealing member  400 , and help guide the sealing member  400  into the mounting slot  330 . 
     Referring to  FIG.  7    and  FIG.  9   , in an embodiment, the outer wall surface of the side mounting plate  320  is further provided with a groove  323 , and the groove  323  is elongated and extends along the insertion direction of the mounting slot  330 . The groove  323  can increase the friction coefficient of the outer surface of the side mounting plate  320  to facilitate the user to align and insert the mounting slot  330  and the sealing member  400  with the side mounting plate  320  in hand. Besides, a recess  324  is formed between two adjacent guiding protrusion bars  321 , and the groove  323  corresponds to the position of the recess  324  of the side mounting plate  320 , so that the position of the thickness variation of the side mounting plate  320  is substantially the same, which is advantageous for the molten colloid to flow in the cavity corresponding to the inner and outer surface positions of the side mounting plate  320  during injection, so as to form the mounting seat  300  with a relatively stable shape and structure by injection. 
     Referring to  FIG.  4   ,  FIG.  5    and  FIG.  7   , based on any one of the above embodiments, for a specific embodiment in which the mounting base  300  is rotatably mounted in the separation groove  200 , optionally, a pair of rotation arms  340  protrude downwards from the bottom mounting plate  310  of the mounting base  300 ; a fixation base  500  is mounted in the separation groove  200 , and the fixation base  500  is rotatably connected to the rotation arm  340 . The specific structure of the fixation base  500  is not specifically limited, and can be designed accordingly according to actual needs. 
     In an embodiment, the fixation base  500  includes a bottom fixation plate  510  and two side fixation plates  520 , a first side fixation plate and a second side fixation plate, on two sides of the bottom fixation plate  510 , respectively, and a receiving groove  501  into which the rotation arm  340  extends is formed between the two side fixation plates  520 . One of the side fixation plate  520 , e.g., the first side fixation plate, and the rotation arm  340  is configured to form a rotation shaft  341 , and the other of the side fixation plate  520 , e.g., the first side fixation plate, and the rotation arm  340  is configured to form a shaft hole  521  corresponding to the rotation shaft  341 . 
     Specifically, the rotation shaft  341  may be provided at the rotation arm  340 , and a shaft hole  521  corresponding to the rotation shaft  341  may be provided at the side fixation plate. The shaft hole  521  is correspondingly inserted by the rotation shaft  341  of the rotation arm  340 , so that the mounting base  300  is rotatably connected to the fixation base  500 . Alternatively, the rotation shaft  341  may be provided at the side fixation plate  520 , and a shaft hole  521  corresponding to the rotation shaft  341  may be provided at the rotation arm. The shaft hole  521  is correspondingly inserted by the rotation shaft  341  of the rotation arm  340 , and the mounting base  300  is rotatably connected to the fixation base  500 . In the following, the rotation arm  340  is provided with the rotation shaft  341  and the side fixation plate  520  is provided with a shaft hole  521  as an example for description.  
     Referring to  FIG.  7    to  FIG.  9   , further, a rotation portion  343  is formed at an end of the rotation arm  340  of the mounting base  300 , and the rotation portion  343  has two opposite side walls  301 , and one of the side walls  301  is convexly formed with a rotation shaft  341 . The side fixation plate  520  of the fixation base  500  protrudes towards the receiving groove  501  with a boss  523  (as shown in  FIG.  11   ). The boss  523  is formed with a shaft hole  521 , and the shaft hole  521  is correspondingly inserted by the rotation shaft  341 . 
     Specifically, the shaft hole  521  is formed at the boss  523 , and the shaft hole  521  penetrates the boss  523 ; the rotation shaft  341  of the rotation arm  340  passes through the shaft hole  521 , so that the rotation shaft  341  can be inserted and stabilized in the shaft hole  521 . The boss  523  can enhance the strength of the position near the shaft hole  521 , so that the shaft hole  521  is correspondingly inserted by the rotation shaft  341  to stably support the rotation shaft  341  of the mounting base  300 , thereby enhancing the stability of the insertion with the rotation shaft  341 . The rotation shaft  341  of the rotation arm  340  passes through the shaft hole  521 . The outer end of the rotation shaft  341  may interfere with the back plate of the indoor housing  110  or the back plate of the outdoor housing  120 , and the rotation shaft  341  continuously generates friction when rotating. 
     Referring to  FIG.  7    to  FIG.  11   , to ensure that the fixation base  500  can provide enough space for the rotation of the rotation shaft  341 , optionally, the fixation base  500  further includes two rib plates  530  on the surface of the side fixation plate  520  away from the boss  523 , and a cover plate  540  connected to a side edge of the side fixation plate  520  away from the bottom fixation plate. The cover plate  540  is connected to the two rib plates  530  and enclosed with the two rib plates  530  to form an avoiding groove  502  corresponding to the shaft hole  521 . Therefore, the rotation shaft  341  of the rotation arm  340  is inserted in the avoiding groove  502  from the shaft hole  521  to be received in the avoiding groove  502 . When rotating, the rotation shaft  341  is less likely to interfere with the back plate of the indoor housing  110  or the back plate of the outdoor housing  120 . 
     Specifically, the side fixation plate  520  is connected to the two rib plates  530  and the cover plate  540  to form a stable structure, which can enhance the strength of the side fixation plate  520  and make it difficult for both ends of the side fixation plate  520  to bend. When mounting the fixation base  500 , the rib plate  530  and the cover plate  540  at the end of the fixation base  500  are inserted corresponding to the side walls of the separation groove  200 . The contact surface with the separation groove  200  is small, which can reduce the interference of the side wall of the separation groove  200  and facilitate the installation of the fixation base  500  in the separation groove  200 . 
     The side fixation plate  520 , the two rib plates  530  and the cover plate  540  of the fixation base  500  cooperate to form the side of the fixation base  500 . Theoretically, the side of the fixation base  500  is designed as a solid block structure (that is, no avoiding groove  502  is formed between the two rib plates  530  and the cover plate  540 ), and the side of the fixation base  500  will have better strength. However, the fixation base  500  is usually injection molded using an injection process. Due to the large thickness of the side of the fixation base  500 , it is not easy to completely fill the corresponding mold cavity with a molten material in the production process of injection. Therefore, it is possible that the surface of the side portion of the fixation base  500  is easily recessed into the inside thereof, and a recess is formed, which destroys the structural stability of the fixation base  500 . Therefore, in this embodiment, due to the existence of the avoiding groove  502 , the side of the fixation base  500  can be equivalent to forming a hollow structure, which is beneficial to the injection production of the fixation base  500 . 
     Further, the lower end of the rib plate  530  is chamfered to form a guiding portion  531  at the chamfered position of the rib plate  530 . When mounting the fixation base  500 , the side wall of the guiding portion  531  corresponding to the sink groove  210  can be inserted downwards into the sink groove  210 , reducing the resisting force between the rib plate  530  and the side wall of the sink groove  210 , thereby reducing the difficulty of mounting the fixation base  500  and improving the assembly efficiency. 
     In an embodiment, the rotation portion  343  may also be a solid block structure, so that it has better strength. However, the mounting base  300  is usually injection molded using an injection process. Since the thickness of the rotation portion  343  is large, during the production process of injection, it is not easy to completely fill the mold cavity of the corresponding rotating part  343  with a molten material, therefore, it is possible that the side wall  301  of the rotation portion  343  is easily recessed into the inside, and a recess is formed in the side wall  301  of the rotation portion  343 . To solve this problem, a connection plate  302  is connected between the two side walls  301  of the rotation portion  343 , and a hollow groove  303  is formed between two adjacent connection plates  302 , which makes the rotation portion  343  being a non-solid structure, and is beneficial to the injection production of the mounting base  300 , thereby avoiding forming the recess on the side wall  301  of the rotation portion  343 , and ensuring the structural integrity of the rotation portion  343  and ensuring that the rotation portion  343  has better strength. 
     Referring to  FIG.  5   ,  FIG.  9    and  FIG.  10   , in an embodiment, the rotation angle of the rotation arm  340  of the mounting base  300  can be adjusted, so that the angle between the sealing member  400  and the horizontal direction can be adjusted by adjusting the rotation angle of the mounting base  330 , for example, 90°, 45°, or 30°. As for the manner in which the rotation angle of the sealing member  400  can be adjusted, there are various ways. Again, there is no specific limit.  
     In some embodiments, one of the fixation base  500  and the rotation arm  340  is formed with a positioning protrusion  342  on a periphery of the rotation shaft  341 , and the other is formed with a plurality of positioning grooves  522  on a periphery of the shaft hole  521 . When the mounting base  300  rotates to a preset angle, the positioning protrusion  342  cooperates with one of the positioning grooves  522  to position the mounting base  30 . 
     Specifically, the plurality of positioning grooves  522  are arranged in a circular ring shape along the periphery of the shaft hole  521 . 
     Here, it is considered that since the part close to the separation groove  200  is exposed to the outside, water dripping onto the mounting base  300  in the outdoor environment can easily enter the fixation base  500  and fall into the indoor housing  110 . Therefore, in order to avoid this, a sink groove  210  for mounting the fixation base  500  is provided at the bottom of the separation groove  200 , and as shown in  FIG.  12   , the sink groove  210  is provided with a drain hole  220 , which is configured to drain water outdoors or in a water receiving tray. The water dripping onto the mounting base  300  in the outdoor environment will drop into the sink groove  210  first, and then be discharged from the drain hole  220  of the sink groove  210  to the outdoor or the water receiving tray to avoid wetting the internal components of the indoor housing  110 . 
     Besides, the fixation base  500  can be directly limited and fixed in the sink groove  210  to limit the fixation base  500  by the side wall of the circumference of the sink groove  210 , which can reduce the use of components such as the screw structure or the clamping structure. 
     Based on any one of the above embodiments, in order to ensure that the sealing member  400  can be deformed and inserted tightly with the mounting base  300 . Optionally, the sealing member  400  is made of a flexible material, to flexibly deform the sealing member  400 . Alternatively, the sealing member  400  is made of an elastic material to elastically deform the sealing member  400 . The specific material of the sealing member  400  may be, but not limited to, hard sponge, deformable plastic, rubber or silicone. 
     In an embodiment, the mounting openings of the wall usually have different sizes, thus requiring sealing members  400  with different lengths. Here, in order to adapt the sealing member  400  to the mounting openings of different sizes, the sealing member  400  may also be cut to change the length of the sealing member  400 . As mentioned above, the sealing member  400  is made of a flexible material or an elastic material, such that the sealing member has better flexibility. Therefore, the sealing member  400  can be cut and its length can be changed to adapt to the mounting openings of different sizes. 
     The above are only some embodiments of the present disclosure, and thus do not limit the scope of the present disclosure. Based on the present disclosure, equivalent structural transformations made by the description and drawings of the present disclosure, or direct/indirect application in other related technical fields are included in the scope of the present disclosure.