Patent ID: 12228144

InFIG.1toFIG.7, the correspondence between reference numbers and terms of components is as follows:

102volute;104volute body;106tongue body;108flow diffusion part;110flow-passing part;112volute tongue;114sinking platform;116flow collector;118first housing;120, second housing;122air inlet;124air outlet.

DETAILED DESCRIPTION

In order to enable clearer understanding of the above objects, features, and advantages of the present disclosure, detailed description of the present disclosure will be given below in conjunction with the accompanying drawings and specific embodiments. It should be noted that embodiments in the present disclosure and features of the embodiments can be combined with one another without conflict.

In the following description, many specific details are provided to facilitate full understanding of the present disclosure. However, the present disclosure may be implemented in many different forms, and is not limited to the embodiments described herein. Therefore, the scope of the present disclosure is not limited by specific embodiments disclosed below.

A fan assembly and an air conditioner according to some embodiments of the present disclosure are described below with reference toFIG.1toFIG.7. A dashed arrow inFIG.3indicates an air outflowing direction of a volute102. A dotted line L1inFIG.2andFIG.4indicates a reference plane L1. A straight line L2inFIG.7indicates a horizontal plane. A direction of a dotted line O inFIG.4is an axial direction of a fan wheel.

As shown inFIG.1,FIG.2andFIG.3, a first embodiment of the present disclosure provides the fan assembly. The assembly includes the volute102and the fan wheel (not shown in the drawings).

As shown inFIG.3, the volute102includes a volute body104and a volute tongue112connected at an opening of the volute body104. The fan wheel is disposed at least partially in the volute body104. During an operation of the fan assembly, the fan wheel rotates to suction an airflow from the outside into the volute body104, and the airflow is discharged through the opening after being pressurized by the fan wheel.

In some embodiments, during the operation of the fan assembly, the distribution of the airflow flowing out from the fan wheel is not uniform. In the axial direction of the fan wheel, a portion closer to the middle has a relatively high air volume, and the portion having the relatively high air volume has a correspondingly faster air flow speed. Accordingly, as shown inFIG.4,FIG.5andFIG.6, this embodiment optimizes a shape of the volute102. The volute tongue112includes a flow diffusion part110and a flow-passing part108in cooperation with each other, and ensures that the flow-passing part110is located at a higher position than the flow diffusion part118, enabling that a relative position of the flow diffusion part118is relatively low. In this way, a flow-passing area of the flow-passing part110at a position where the flow-passing part110is located at the volute tongue112can be effectively enlarged, which in turn reduces a flow speed of the airflow at the position where the flow-passing part110is located, allowing an overall flow speed of the fan assembly to be relatively more uniform.

Further, as shown inFIG.4,FIG.5andFIG.6, in the axial direction of the fan wheel, the flow-passing part110is located at two sides of the flow diffusion part108, and the flow diffusion part108is located at the middle. In this way, the arrangement of the flow diffusion part108and the flow-passing part110is configured to match the distribution of an air volume of the airflow flowing out from the fan wheel. The flow diffusion part108is located at a lower level than the flow-passing part110, which allows that the flow diffusion part108can be configured to increase the flow-passing area at the position where the flow diffusion part108is located, thereby decreasing the air flow speed at the position where the flow diffusion part108is located. In this way, uniformity of the airflow from the fan assembly is ensured by cooperation between the flow-passing part110and the flow diffusion part108.

Therefore, in the case of the same operating sound, the fan assembly of this embodiment is able to supply a relatively large air volume to satisfy air adjustment in a relatively large space. Accordingly, under the same air volume, the fan assembly of this embodiment has a relatively low operating sound, and improves the comfort of the fan assembly. Accordingly, in the case of the same air volume and the same operating sound, the fan assembly of this embodiment has a relatively small volume, which can meet a lower cost or adapt to more diversified mounting space requirements.

Therefore, this embodiment optimizes the shape of the volute102, and the volute tongue112includes the flow-passing part110and the flow diffusion part108in conjunction with each other, which reduces the flow speed of the airflow at the position where the flow-passing part110is located, ensures the uniformity of the airflow from the fan assembly, and effectively improves operating performance of the fan assembly.

A second embodiment of the present disclosure provides a fan assembly. In view of the first embodiment, the fan assembly is further described as follows.

As shown inFIG.4andFIG.6, the volute tongue112further includes a tongue body106connected at the opening of the volute body104, and the flow diffusion part108and the flow-passing part110are disposed at the tongue body106.

In addition, the flow-passing part110is flush with an inner wall of the tongue body106. During the operation of the fan assembly, the airflow is guided and divided directly by the inner wall of the tongue body106, which enables that the airflow pressurized by the fan wheel flows through the flow-passing part110and is finally discharged. In some embodiments, the inner wall of the tongue body106defines the flow-passing part110as described above.

In addition, the flow diffusion part108is recessed relative to the tongue body106. In this way, the flow diffusion part108is ensured to be located at a lower level than the flow-passing part110. That is, the flow-passing area at the position where the flow diffusion part108is located is ensured to be greater than the flow-passing area at the position where the flow-passing part110is located. In this way, the flow speed of the airflow at the position where the flow diffusion part108is located is reduced to a certain extent, and the flow speed of the airflow at the position at the position where the flow diffusion part108is located is consistent with the flow speed of the airflow at the position at the position where the flow-passing part110is located, which realizes uniform air supply of the entire fan assembly. In some embodiments, an interior of the tongue body106is provided with a groove, which defines the above flow diffusion part108.

In this embodiment, the volute tongue112has a simple structure. A structure of the volute tongue112and a structure of the whole fan assembly can be simplified, and manufacture of the volute tongue112and manufacture of the whole fan assembly can be facilitated. Moreover, the recessed flow diffusion part108can further reduce a wind resistance at the position where the flow diffusion part108is located. In this way, a higher static pressure can be used to overcome the resistance in the volute102in the same air volume, while allowing more even and rational distribution of the air volume in the volute102.

In addition, the flow diffusion part108may be directly connected to the volute body104in an air outflowing direction of the volute102. Alternatively, a rounded corner may be formed between the flow diffusion part108and the volute body104, and thus the flow diffusion part108and the volute body104are connected through the rounded corner. Each of the above two manners ensures a smooth connection between the flow diffusion part108and an inner wall of the volute body104.

A third embodiment of the present disclosure provides a fan assembly. In view of the above embodiment, the fan assembly is further provided as follows.

As shown inFIG.2andFIG.4, in the axial direction of the fan wheel, a middle portion of the flow diffusion part108has a depth greater than a depth of each of two side portions of the flow diffusion part108. In some embodiments, a plane having the same distances from two end surfaces of the fan wheel in the axial direction is defined as a reference plane L1. In the axial direction of the fan wheel, a center of the flow diffusion part108is located at the reference plane L1, and the middle portion of the flow diffusion part108has the depth greater than the depth of each of the two side portions of the flow diffusion part108from the reference plane L1to two sides of the flow diffusion part108. In some embodiments, the depth of the flow diffusion part108is a recessed depth of the flow diffusion part108.

This embodiment optimizes the depth of the flow diffusion part108, which enables that the middle portion of the flow diffusion part108has the depth greater than the depth of each of the two side portions of the flow diffusion part108in the axial direction of the fan wheel. In this way, the depth of the flow diffusion part108decreases gradually from the center to the two sides in the axial direction of the fan wheel, which in turn allows a flow diffusion effect of the flow diffusion part108to decrease gradually in the axial direction of the fan wheel. That is, in the axial direction of the fan wheel, a flow-passing area gradually decreases from the middle portion of the flow diffusion part108to the two sides of the flow diffusion part108.

In some embodiments, during the operation of the fan assembly, in the axial direction of the fan wheel, an air volume at the reference plane L1is maximum, and an air volume gradually decreases from the reference plane L1to the two sides of the flow diffusion part108. Therefore, in this embodiment, the flow diffusion part108is disposed in the volute tongue112, which further optimizes the depth of the flow diffusion part108. In this way, the depth of the flow diffusion part108matches the air volume at the position where the flow diffusion part108is located, ensuring that the depth of the flow diffusion part108at the reference plane L1is maximum and the depth at the two sides gradually decreases. Therefore, an airflow speed at the position where the flow diffusion part108is located is ensured to be uniform.

Further, in this embodiment, as shown inFIG.4, a cross section of flow diffusion part108in the axial direction of the fan wheel includes one arc or a plurality of arcs connected to one another. In this way, a depth of the reference plane L1gradually increases or decreases, which ensures that the reference plane L1is in a smooth state in the axial direction of the fan wheel. On the one hand, an overall structure of the flow diffusion part108is ensured to be coordinated, and on the other hand, the flow diffusion part108does not generate wind resistance in the volute102to ensure the air supply efficiency of the fan assembly.

Furthermore, in this embodiment, as shown inFIG.4, for the cross section of the flow diffusion part108in the axial direction of the fan wheel, a height of the flow diffusion part108increases synchronously from the middle portion of the flow diffusion part108to the two sides of the flow diffusion part108. That is, a cross section of the flow diffusion part108in the axial direction of the fan wheel is symmetrical with respect to the reference plane L1.

In some embodiments, during the operation of the fan assembly, the airflow flowing out of the fan wheel is gradually reduced from the reference plane L1toward two sides, and the amount of the airflow is negatively correlated with the distance from the position where it is located to the reference plane L1. Therefore, in this embodiment, the shape of the flow diffusion part108is optimized based on distribution regularity of the air volume, ensuring that the cross section of the flow diffusion part108in the axial direction of the fan wheel is symmetrical with respect to the reference plane L1. That is, the shape of the flow diffusion part108is ensured to match the distribution of the air volume, and the reference plane L1is ensured to be in a smooth state in the axial direction of the fan wheel. On the one hand, the overall structure of the flow diffusion part108is ensured to be coordinated, and on the other hand, the flow diffusion part108does not generate the wind resistance in the volute102to ensure the air supply efficiency of the fan assembly.

A fourth embodiment of the present disclosure provides a fan assembly. In view of the second embodiment, the fan assembly is further provided as follows.

As shown inFIG.5andFIG.7, an end of the flow diffusion part108connected to the inner wall of the volute body104is located at a lower level than another end of the flow diffusion part108connected to the inner wall of the tongue body106. That is, the height of the flow diffusion part108gradually increases in the air outflowing direction of the volute108.

Therefore, the height of the flow diffusion part108is optimized, and thus a smooth connection between the flow diffusion part108and the inner wall of the volute tongue112is ensured. In this way, during the operation of the fan assembly, the airflow flows smoothly out of the volute body104, and is in a smooth transition state when flowing through the flow diffusion part108.

A fifth embodiment of the present disclosure provides a fan assembly. In view of the fourth embodiment, the fan assembly is further provided as follows.

As shown inFIG.5andFIG.7, after the air conditioner is mounted, an air outlet124of the volute102is horizontally disposed. A cross section of the flow diffusion part108in the radial direction of the fan wheel includes a straight line. In addition, a first angle θ between the straight line and a horizontal plane L2is greater than 8° and smaller than or equal to 12°. That is, in the air outflowing direction of the volute102, an inclination angle between a wall surface of the flow diffusion part108and an air supply direction is ensured to be in a range of 8° to 12°, and a side of the flow diffusion part108facing toward the volute body104is ensured to be at a lower position.

In this way, during the operation of the fan assembly, the airflow pressurized by the fan wheel firstly flows to the positions where the flow diffusion part108and the flow-passing part110are located. Since an inclination angle in a range of 8° to 12° is formed between the wall surface of the flow diffusion part108the horizontal plane L2, the airflow can smoothly flow to the flow diffusion part108. In addition, since the flow diffusion part108is lower than flow diffusion part108, it is ensured that the flow speed of the airflow passing through the flow diffusion part108is reduced and matches the flow speed of the airflow passing through the flow-passing part110. In this way, firstly, a uniform air supply speed of the whole fan assembly can be ensured, and secondly, a smooth and efficient airflow flowing through the flow diffusion part108can be ensured, which reduce operating noise of the fan assembly and improve the air supply efficiency of the fan assembly.

In some embodiments, the first angle θ may be 8°, 9°, 10°, 11°, 12°, and the like, which is not specifically limited herein. The first angle can be realized as long as noise reduction and air supply efficiency improvement can be achieved, which can be understood by those skilled in the art.

A sixth embodiment of the present disclosure provides a fan assembly. In view of the fourth embodiment, the fan assembly is further provided as follows.

After the air conditioner is mounted, the air outlet124of the volute102is horizontally disposed. The cross section of the flow diffusion part108in the radial direction of the fan wheel includes an arc (this embodiment is not shown in the drawings). In addition, a second angle is formed between a tangent line of the arc at an end close to the fan wheel and the horizontal plane L2, and is greater than 8° and smaller than or equal to 12°. That is, in the air outflowing direction of the volute102, an inclination angle between the wall surface of the flow diffusion part108and the air supply direction is ensured to be in a range of 8° to 12°, and a side of the flow diffusion part108facing toward the volute body104is ensured to be located at a lower position.

In this way, during the operation of the fan assembly, the airflow pressurized by the fan wheel firstly flows to the positions where the flow diffusion part108and the flow-passing part110are located. Since there is the inclination angle in a range of 8° to 12° between the wall surface of the flow diffusion part108and the horizontal plane L2, the airflow can smoothly flow to the flow diffusion part108. In addition, since the flow diffusion part108is lower than flow diffusion part108, it is ensured that the flow speed of the airflow passing through the flow diffusion part108is reduced and matches the flow speed of the airflow passing through the flow-passing part110. In this way, firstly, the uniform air supply speed of the whole fan assembly can be ensured, and secondly, the smooth and efficient airflow flowing through the flow diffusion part108can be ensured, which reduce the operating noise of the fan assembly and improve the air supply efficiency of the fan assembly.

In some embodiments, the second angle may be 8°, 9°, 10°, 11°, 12°, and the like, which is not specifically limited herein. The second angle can be realized as long as noise reduction and air supply efficiency improvement can be achieved, which can be understood by those skilled in the art.

A seventh embodiment of the present disclosure provides a fan assembly. In view of the second embodiment, the fan assembly is further provided as follows.

As shown inFIG.2andFIG.7, this embodiment optimizes a ratio between a maximum depth H of the flow diffusion part108and an axial dimension L of the volute tongue112, to ensure that the ratio between the maximum depth H of the flow diffusion part108and the axial dimension L of the volute tongue112is greater than or equal to 0.05 and smaller than or equal to 0.1. In this way, a maximum recess depth of the flow diffusion part108in the volute tongue112is guaranteed to match, i.e., a maximum recess dimension of the flow diffusion part108in the volute tongue112is guaranteed to be appropriate.

In some embodiments, the maximum depth H of the flow diffusion part108directly affects the flow diffusion effect of the flow diffusion part108. That is, the greater the maximum depth H of the flow diffusion part108is, the better the diffusion effect is at a position where the depth is the greatest, and the greater the effect on reducing the flow speed is. Therefore, in this embodiment, the ratio between the maximum depth H of the flow diffusion part108and the axial dimension L of the volute tongue112is greater than or equal to 0.05, ensuring a sufficient flow diffusion effect of the flow diffusion part108.

In addition, if the ratio between the maximum depth H of the flow diffusion part108and the axial dimension L of the volute tongue112is too great, the flow diffusion part108may result in a lower strength of the whole volute tongue112. Therefore, in this embodiment, the ratio between the maximum depth H of the flow diffusion part108and the axial dimension L of the volute tongue112is configured to be smaller than or equal to 0.1. In this way, the structure of the flow diffusion part108matches the structure of the volute tongue112, ensuring the strength of the volute tongue112while ensuring the flow diffusion effect, and further ensuring a service life of the volute tongue112and a service life of the whole fan assembly.

In some embodiments, the ratio between the maximum depth H of the flow diffusion part108and the axial dimension L of the volute tongue112may be 0.05, 0.06, 0.07, 0.08, 0.09, 0.1, and the like, which is not specifically limited herein. As long as the flow diffusion part108has the sufficient flow diffusion effect and a relatively strong strength, which can be realized and can be understood by those skilled in the art.

An eighth embodiment of the present disclosure provides a fan assembly. In view of the second embodiment, the fan assembly is further provided as follows.

As shown inFIG.4andFIG.6, the fan assembly further includes a sinking platform114, which is disposed at the flow-passing part110and located at the two sides of the flow diffusion part108. The flow-passing part110is provided with the sinking platform114, which can ensure a minimum gap between the inner wall of the volute102and an outer edge of the fan wheel at the volute tongue112, and can reduce impact of the airflow on the volute102. In this way, a flow field inside the volute102is optimized to effectively prevent vortex from being generated by the airflow at the volute tongue112, which effectively reduces vortex noise of the fan while ensuring the performance of the fan assembly. This in turn improves using comfort of the fan assembly and ensures the air supply efficiency of the fan assembly.

Further, in this embodiment as shown inFIG.4andFIG.6, the volute tongue112further includes the sinking platform114disposed at the tongue body106, and the flow diffusion part108is located between two sinking platforms114. In other words, in this embodiment, the sinking platform114is provided at a position in the volute tongue112close to each of two sidewalls of the volute102. The sinking platforms114are ensured to be respectively located at the two sides of the flow diffusion part108, and the flow diffusion part108is ensured to be arranged between the two sinking platforms114. In some embodiments, during the operation of the fan assembly, the above arrangement of the sinking platforms114can ensure a minimum gap between the volute tongue112and the outer edge of the fan wheel, and can reduce impact of the airflow on the volute102. In this way, the flow field inside the volute102is optimized to effectively prevent the vortex from being generated by the airflow at the volute tongue112, which effectively reduces the vortex noise of the fan while ensuring the performance of the fan assembly. This in turn improves using comfort of the fan assembly and ensures the air supply efficiency of the fan assembly.

In view of the first embodiment to the eighth embodiment, as shown inFIG.1, air inlets122of the volute102is located at two sides of the fan wheel in the axial direction of the fan wheel, and the air outlet124of the volute102is located at a lateral side of the fan wheel. In this way, during the operation of the fan assembly, external air can flow into an interior of the volute102from the two sides of the fan wheel in the axial direction, and is discharged through the air outlet124located at the lateral side of the fan wheel in the axial direction of the fan wheel after being pressurized by the fan wheel.

In view of the first embodiment to the eighth embodiment, as shown inFIG.1, the fan assembly further includes a flow collector116. The flow collector116is disposed at the volute102, and is located at the air inlet122of the volute102. In this way, during the operation of the fan assembly, the flow collector116can achieve a good effect of collecting and guiding flow at the air inlet122of the volute102, thereby improving the air supply volume and the air supply efficiency of the fan assembly.

Furthermore, on the basis of the first embodiment to the eighth embodiment, as shown inFIG.1, the volute102includes a first housing118and a second housing120connected to each other. The first housing118is provided with the flow diffusion part108and the flow-passing part110. In some embodiments, the first housing118is a lower housing of the volute102, and the second housing120is an upper housing of the volute102. The first housing118is provided with the volute tongue112, and the volute tongue112is provided with the flow diffusion part108and the flow-passing part110.

A ninth embodiment of the present disclosure provides an air conditioner. The air conditioner includes the fan assembly of any one of the first embodiment to the eighth embodiment.

The air conditioner of this embodiment includes the fan assembly according to any one of the above embodiments. Therefore, the air conditioner has all the beneficial effects of the above fan assembly and will not be repeated here.

As shown inFIG.1,FIG.2,FIG.3andFIG.4, an embodiment of the present disclosure provides a fan assembly including the volute102and the fan wheel. In this embodiment, the shape of the volute102is optimized, and the volute tongue112includes the flow-passing part110and the flow diffusion part108that are used cooperatively, enabling that the flow-passing part110is located at the higher position than the flow diffusion part108to enable the relative position of the flow diffusion part108to be lower. In this way, the flow-passing area of the flow-passing part110at the volute tongue112can be effectively enlarged, and the airflow speed at the position where the flow-passing part110is located can be further reduced, which allows the overall flow speed of the fan assembly to be relatively uniform.

Further, in this embodiment as shown inFIG.5, the volute tongue112further includes the tongue body106, and the tongue body106is connected at the opening of the volute body104. Each of the flow diffusion part108and the flow-passing part110is disposed at the tongue body106. The flow-passing part110is disposed to be flushed with the inner wall of the tongue body106, and the flow diffusion part108is recessed relative to the tongue body106.

Further, in this embodiment, as shown inFIG.4, the depth of the flow diffusion part108is optimized, which enables that the middle portion of the flow diffusion part108has the depth greater than the depth of each of the two side portions of the flow diffusion part108in the axial direction of the fan wheel. That is, the depth of the flow diffusion part108decreases gradually from the center to the two sides in the axial direction of the fan wheel, enabling that the flow diffusion effect of the flow diffusion part108decreases gradually in the axial direction of the fan wheel. In addition, the cross section of the flow diffusion part108in the axial direction of the fan wheel may include one arc or the plurality of arcs connected to one another, to ensure that the reference plane L1is in the smooth state in the axial direction of the fan wheel. Furthermore, the cross section of the flow diffusion part108in the axial direction of the fan wheel is symmetrical with respect to the reference plane L1, ensuring that the shape of the flow diffusion part108matches the distribution of air volume. In addition, the height of the flow diffusion part108gradually increases in the air outflowing direction of the volute102, ensuring that the airflow flows smoothly through the flow diffusion part108and that the airflow is in the smooth transition state when flowing through the flow diffusion part108.

Further, in this embodiment, as shown inFIG.7, after the air conditioner is mounted, the air outlet124of the volute102is disposed horizontally. When the cross section of the flow diffusion part108in the radial direction of the fan wheel includes the straight line, the first angle θ is formed between the straight line and the horizontal plane L2, and the first angle θ is greater than 8° and smaller than or equal to 12°. When the cross section of the flow diffusion part108in the radial direction of the fan wheel includes the arc, the second angle is formed between the tangent line of the arc at the end close to the fan wheel and the horizontal plane L2, and is greater than 8° and smaller than or equal to 12°.

Further, in this embodiment, the maximum depth H of the flow diffusion part108and the axial dimension L of the volute tongue112are optimized, to ensure that the ratio between the maximum depth H of the flow diffusion part108and the axial dimension L of the volute tongue112is greater than or equal to 0.05 and smaller than or equal to 0.1.

Further, in this embodiment as shown inFIG.6, the volute tongue112further includes the sinking platforms114, which are disposed at the flow-passing part110and located at the two sides of the flow diffusion part108. In this way, the minimum gap between the inner wall of the volute102and the outer edge of the fan wheel can be ensured. Meanwhile, the impact of the airflow on the volute102is reduced and the flow field inside the volute102is optimized, to effectively prevent the vortex from being generated by the airflow at the volute tongue112, which effectively reduces the vortex noise of the fan while ensuring the performance of the fan assembly. This in turn improves using comfort of the fan assembly and ensures the air supply efficiency of the fan assembly. In some embodiments, the sinking platforms114are arranged at the volute tongue112, and the flow diffusion part108is located between the two sinking platforms114.

Further, in this embodiment, as shown inFIG.1, the air inlet122of the volute102is located at each of the two sides of the fan wheel in the axial direction. The air outlet124of the volute102is located at the lateral side of the fan wheel in the radial direction. In addition, the flow collector116is disposed at the air inlet122of the volute102, and the flow collector116can achieve the good effect of collecting and guiding the flow at the air inlet122of the volute102, thereby improving the air supply volume and the air supply efficiency of the fan assembly.

In some embodiments, the fan assembly is a core component of the air conditioner. The performance of the fan assembly determines the size, performance, and sound quality of the air conditioner. At present, the air conditioner generally has large noise, large dimension, and poor heat exchange effect due to the technical restrictions on the fan assembly. The present disclosure provides the fan assembly, which can solve the technical problems of large noise, large dimension, and poor heat exchange effect of the air conditioner.

As shown inFIG.1,FIG.2,FIG.3andFIG.4, the fan assembly of the present disclosure includes the volute102, the fan wheel, the flow diffusion part108, and the flow-passing part110. The volute102includes the volute body104and the volute tongue112connected at the opening of the volute body104. As shown inFIG.4, the volute tongue112includes the flow diffusion part108and the flow-passing part110in cooperation with each other. The flow diffusion part108is in a recessed state and lower than the flow-passing part110, in which a recessed direction is directed to the outside of the volute tongue112. In addition, as shown inFIG.4, the plane having equal distances from two end surfaces of the fan wheel in the axial direction is defined as the reference plane L1. The cross section of the flow diffusion part108in the axial direction of the fan wheel is symmetrical with respect to the reference plane L1. In addition, when the cross section of the flow diffusion part108in the radial direction of the fan wheel includes the straight line, as shown inFIG.7, the first angle θ is formed between the straight line and the horizontal plane L2. The first angle θ is greater than 8° and smaller than or equal to 12°. When the cross section of the flow diffusion part108in the radial direction of the fan wheel includes the arc, the second angle is formed between the tangent line of the arc at the end close to the fan wheel and the horizontal plane L2, and is greater than 8° and smaller than or equal to 12°. Further, the ratio between the maximum depth H of the flow diffusion part108and the axial dimension L of the volute tongue112is greater than or equal to 0.05 and smaller than or equal to 0.1. Furthermore, the cross section of the flow diffusion part108in the axial direction of the fan wheel includes one arc, or includes the plurality of arcs connected to one another. In addition, in the air supply direction of the volute102, the flow diffusion part108may be directly connected to the inner wall of the volute body104, or a rounded corner may be formed between the flow diffusion part108and the inner wall of the volute body104. As shown inFIG.6, the sinking platforms114may be provided at the position where the flow-passing part110is located.

In the case of the same noise, the air conditioner including the fan assembly of the present disclosure can supply the larger air volume to satisfy the air adjustment in the larger space. Accordingly, in the case of the same air volume, the air conditioner including the fan assembly of the present disclosure has lower noise, and the comfort of the air conditioner can be effectively improved.

In the case of the same air volume, the air conditioner including the fan assembly of the present disclosure has a higher static pressure to overcome resistance in an air supply pipeline and reduces mounting components in the air conditioner. Accordingly, in the case of the same air volume, a surface of a heat exchanger applying the fan assembly of the present disclosure has a more uniform flow speed distribution.

In the case of the same noise and the same air volume, the air conditioner including the fan assembly of the present disclosure has a smaller volume, which can meet the lower cost or adapt to the more diversified mounting space requirements.

In the description of the present disclosure, the term “plurality” means two or more, unless otherwise specified defined. The orientation or the position indicated by terms such as “above” and “below” refer to the orientation or the position as shown in the drawings, and is only for the convenience of describing the present disclosure and simplifying the description, rather than indicating or implying that the pointed device or element must have a specific orientation, or be constructed and operated in a specific orientation, and therefore cannot be understood as limitation to the present disclosure. The terms such as “connect,” “install,” “fix” and the like should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or connection as one piece; or a direct connection or indirect connection through an intermediate element. For those skilled in the art, the specific meaning of the above terms in the present disclosure can be understood according to specific circumstances.

In the description of the present disclosure, description of terms such as “an embodiment,” “some embodiments” and “a specific embodiment” means that specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner.

While some embodiments of the present disclosure have been described above, the present disclosure is not limited to these embodiments. For those skilled in the art, various changes and variations can be made to the present disclosure. Any modification, equivalent substitution, improvement and the like, made within the spirit and principles of the present disclosure, shall fall within the scope of the present disclosure.