Set of fans and air conditioning

Abstract

This application provides a set of fans and an air conditioner. The fan set comprises: a volute, wherein the volute comprises a volute body and a volute tongue connected to an opening in the volute body; and a wind wheel, at least partially disposed in the volute body. The volute tongue comprises a flow spreading portion and flow passage portions; in the axial direction of the wind wheel, the flow passage portions are located on either side of the flow spreading portion; the flow passage portions are higher than the flow spreading portion.In the present application, the volute shape is optimized, the volute tongue comprises the flow passage portions and the flow spreading portion which are used together, and the airflow rate at the positions where the flow passage portions are located is reduced, thus ensuring the uniformity of airflow of the fan assembly and effectively improving the operating performance of the fan assembly.

Description

26 SET OF FANS AND AIR CONDITIONING

[001] This application claims priority to Patent Application No. CH 202121538970.9, entitled “FAN ASSEMBLY AND AIR CONDITIONER” and filed with the National Intellectual Property Administration of China on July 7, 2021, the full content of which is incorporated herein by reference. FIELD

[002] The present disclosure relates to the field of fan technologies and, more particularly, to a set of fans and an air conditioner. BACKGROUND

[003] A fan assembly is a central component of an air conditioner, and the assembly's performance determines the size, performance, and sound quality of the air conditioner. In the related technique, the fan assembly has different airflow velocities at the air outlet; for example, the flow velocity at the intermediate position is higher than the flow velocity at the peripheral position. This allows the fan assembly and the air conditioner to have a high noise level and affects the efficiency of the fan's air delivery. SUMMARY

[004] The present disclosure aims to solve at least one of the technical problems of the related technique.

[005] To this end, a first aspect of the present disclosure provides a set of fans.

[006] A second aspect of the present revelation provides air conditioning.

[007] The first aspect of the present disclosure provides the fan assembly. The fan assembly includes a volute and a fan wheel. The volute includes a volute body and a volute tongue. Petition 870230104417, dated 11 / 28 / 2023, page 18 / 51 / 26 connected to an opening in the volute body, and the fan wheel is disposed at least partially in the volute body. The volute tongue includes a flow diffusion portion and a flow passage portion. In an axial direction of the fan wheel, the flow passage portion is located on two sides of the flow diffusion portion and is located at a higher position than the flow diffusion portion.

[008] The fan assembly of the present disclosure includes the volute and the fan wheel. The volute includes the volute body and the volute tongue connected to the opening of the volute body. The fan wheel is disposed at least partially in the volute body. During operation of the fan assembly, the fan wheel rotates to draw an airflow from outside into the volute body, and the airflow is discharged after being pressurized by the fan wheel and flowing through the volute tongue.

[009] In some embodiments, during the operation of the fan assembly, the distribution of the airflow exiting the fan wheel is not uniform. In the axial direction of the fan wheel, a portion closer to the center has a relatively high air volume, and the portion with a relatively high air volume has a correspondingly faster airflow velocity. Therefore, the present invention optimizes a volute tongue design. The volute tongue includes the flow diffusion portion and the flow passage portion and ensures that the flow passage portion is located at a higher position than the flow diffusion portion, allowing for a relatively lower position of the flow diffusion portion.In this way, the position where the flow passage portion is located has a flow passage area that can be effectively enlarged, which in turn reduces the airflow velocity at this position, allowing for a relatively more uniform overall flow velocity of the fan assembly.

[0010] In addition, in the axial direction of the fan wheel, the portion of Petition 870230104417, dated 11 / 28 / 2023, page 19 / 51 / 26: The flow passage is located on both sides of the flow diffusion portion, allowing the flow diffusion portion to be positioned intermediately. In this way, the distribution of the flow diffusion portion and the flow passage portion is configured to match the air volume distribution of the airflow exiting the fan wheel. The flow diffusion portion is located at a lower level than the flow passage portion, allowing the flow diffusion portion to be configured to increase the flow passage area at the position where the flow diffusion portion is located, thus decreasing the airflow velocity at the position where the flow diffusion portion is located. In this way, the uniformity of the airflow from the fan assembly is ensured by the cooperation between the flow passage portion and the flow diffusion portion.

[0011] Therefore, under the same operating sound, the fan assembly of the present disclosure is capable of providing a relatively large air volume to satisfy air adjustment in a relatively large space. Consequently, under the same air volume, the fan assembly of the present disclosure has a relatively low operating sound and improves the comfort of the fan assembly. Thus, under the same air volume and the same operating sound, the fan assembly of the present disclosure has a relatively small volume, which can meet a lower cost or adapt to more diverse mounting space requirements.

[0012] Therefore, the present disclosure optimizes the shape of the volute and the volute tongue includes the flow passage portion and the flow diffusion portion together with each other, which reduces the flow velocity at a position where the flow passage portion is located, ensures the uniformity of the airflow of the fan assembly and effectively improves the operational performance of the fan assembly. Petition 870230104417, dated 11 / 28 / 2023, page 20 / 51 / 26

[0013] The fan assembly according to the above technical solution of the present disclosure may also have the following additional features.

[0014] In the technical solution above, the volute tongue also includes a tongue body. The flux diffusion portion and the flux passage portion are located in the tongue body, and the flux diffusion portion is recessed relative to the tongue body.

[0015] In some possible solutions, in the axial direction of the fan wheel, an intermediate portion of the flux diffusion portion has a greater depth than the depth of each of the two lateral portions of the flux diffusion portion.

[0016] In some possible solutions, a cross-section of the flow diffusion portion in the axial direction of the ventilation wheel includes an arc or a plurality of interconnected arcs.

[0017] In some possible solutions, for the cross-section of the flow diffusion portion in the axial direction of the fan wheel, a height of the flow diffusion portion increases synchronously from the intermediate portion of the flow diffusion portion to the two ends of the flow diffusion portion.

[0018] In some possible solutions, the height of the flow diffusion portion gradually increases in the direction of air exit from the volute.

[0019] In some possible solutions, a cross-section of the flux diffusion portion, a radial direction of the fan wheel includes a straight line and a first angle between the straight line and a horizontal plane is greater than 8° and less than or equal to 12°.

[0020] In some possible solutions, a cross-section of the flux diffusion portion in a radial direction of the fan wheel, the flux diffusion portion includes an arc and a second angle between a tangent line of the arc at an end near the fan wheel and the horizontal plane is greater than 8° and less than or equal to 12°. Petition 870230104417, dated 11 / 28 / 2023, page 21 / 51 / 26

[0021] In some possible solutions, the flux diffusion portion is connected to an inner wall of the volute body in a radial direction of the fan wheel.

[0022] In some possible solutions, a rounded edge is formed between the flux diffusion portion and an inner wall of the volute body in a radial direction of the fan wheel.

[0023] In some possible solutions, the ratio between the maximum depth of the flux diffusion portion and an axial dimension of the volute tongue is greater than or equal to 0.05 and less than or equal to 0.1.

[0024] In some possible solutions, the volute tongue also includes a sinking platform, and the sinking platform is arranged in the flow passage portion and located on both sides of the flow diffusion portion.

[0025] In some possible solutions, the volute has an air inlet located on two sides of the fan wheel in the axial direction of the fan wheel. The fan assembly also includes a flow collector located at the volute air inlet.

[0026] In some possible solutions, the volute includes a first housing and a second housing connected to each other. The first housing is provided with the flux diffusion portion and the flux passage portion.

[0027] The second aspect of the present disclosure provides the air conditioning which includes the fan assembly of any of the above technical solutions.

[0028] The air conditioner of the present disclosure includes the fan assembly of any of the above technical solutions. Therefore, the air conditioner has all the beneficial effects of the fan assembly of the above technical solutions, which will not be described in detail in this document. Petition 870230104417, dated 11 / 28 / 2023, p. 22 / 51 / 26

[0029] Additional aspects and advantages of the present revelation will be provided at least partially in the following description, will become evident at least partially from the following description, or can be learned in the practice of the present revelation. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The above and / or additional aspects and advantages of the present disclosure will become apparent and easily understood from the description of the embodiments together with the attached drawings below.

[0031] Figure 1 is a schematic view of a structure of a fan assembly (one fan wheel is hidden) according to an embodiment of the present disclosure.

[0032] Figure 2 is a side view of the fan assembly shown in Figure 1.

[0033] Figure 3 is a cross-sectional view of the fan assembly shown in Figure 1.

[0034] Figure 4 is a schematic view of a structure of a first housing for the fan assembly shown in Figure 1.

[0035] Figure 5 is a side view of the first housing shown in Figure 4.

[0036] Figure 6 is an enlarged view of part A of the first housing shown in Figure 4.

[0037] Figure 7 is an enlarged view of part B of the first housing shown in Figure 5.

[0038] In Figures 1 to 7, the correspondence between the reference numbers and the component terms is as follows: 102 volute; 104 volute body; 106 tongue body; 108 flow diffusion portion; 110 flow passage portion; 112 volute tongue; 114 sinking platform; 116 flow collector; 118 first housing; 120 second housing; 122 air inlet; 124 outlet Petition 870230104417, dated 11 / 28 / 2023, page 23 / 51 / 26 of article 26. DETAILED DESCRIPTION

[0039] To allow for a clearer understanding of the objects, features, and advantages above of the present disclosure, a detailed description of the present disclosure will be provided below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments in the present disclosure and the features of the embodiments can be combined with each other without conflict.

[0040] The following description provides many specific details to facilitate a complete understanding of this disclosure. However, this disclosure can be implemented in many different ways and is not limited to the embodiments described herein. Therefore, the scope of this disclosure is not limited by the specific embodiments disclosed below.

[0041] A set of fans and an air conditioner according to some embodiments of the present disclosure are described below with reference to Figure 1 to Figure 7. A dashed arrow in Figure 3 indicates an air outlet direction from a volute 102. A dashed line L1 in Figure 2 and Figure 4 indicates a reference plane L1. A straight line L2 in Figure 7 indicates a horizontal plane. The direction of a dashed line O in Figure 4 is an axial direction of a fan wheel.

[0042] As shown in Figure 1, Figure 2 and Figure 3, a first embodiment of the present disclosure provides the fan assembly. The assembly includes volute 102 and fan wheel (not shown in the drawings).

[0043] As shown in Figure 3, the volute 102 includes a volute body 104 and a volute tongue 112 connected to an opening in the volute body 104. The fan wheel is disposed at least partially in the volute body 104. During an operation of the assembly of Petition 870230104417, dated 11 / 28 / 2023, page 24 / 51 / 26 fans, the fan wheel rotates to draw an airflow from the outside into the volute body 104 and the airflow is discharged after being pressurized by the fan wheel.

[0044] In some embodiments, during the operation of the fan assembly, the distribution of the airflow exiting 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 with a relatively high air volume has a correspondingly faster airflow velocity. Consequently, as shown in Figure 4, Figure 5, and Figure 6, this embodiment optimizes a volute shape 102. The volute tongue 112 includes a flow diffusion portion 110 and a flow passage portion 108 cooperating with each other and ensures that the flow passage portion 110 is located at a higher position than the flow diffusion portion 118, allowing a relatively low relative position of the flow diffusion portion 118.In this way, a flow passage area of ​​the flow passage portion 110 at a position where the flow passage portion 110 is located on the volute tongue 112 can be effectively enlarged, which in turn reduces the airflow velocity at the position where the flow passage portion 110 is located, allowing for a relatively more uniform overall flow velocity of the fan assembly.

[0045] Furthermore, as shown in Figure 4, Figure 5, and Figure 6, in the axial direction of the fan wheel, the flow passage portion 110 is located on two sides of the flow diffusion portion 108, and the flow diffusion portion 108 is located in the middle. Thus, the arrangement of the flow diffusion portion 108 and the flow passage portion 110 is configured to correspond to the air volume distribution of the airflow exiting the fan wheel. The flow diffusion portion 108 Petition 870230104417, dated 11 / 28 / 2023, page 25 / 51 / 26, is located at a lower level than the flow passage portion 110, which allows the flow diffusion portion 108 to be configured to increase the flow passage area at the position where the flow diffusion portion 108 is located, thereby decreasing the airflow velocity at the position where the flow diffusion portion 108 is located. In this way, the uniformity of the airflow of the fan assembly is ensured by the cooperation between the flow passage portion 110 and the flow diffusion portion 108.

[0046] Therefore, under the same operating sound, the fan assembly of this type is capable of providing a relatively large air volume to satisfy air adjustment in a relatively large space. Consequently, under the same air volume, the fan assembly of this type has a relatively low operating sound and improves the comfort of the fan assembly. Consequently, under the same air volume and the same operating sound, the fan assembly of this type has a relatively small volume, which can meet a lower cost or adapt to more diverse mounting space needs.

[0047] Therefore, this embodiment optimizes the shape of the volute 102 and the volute tongue 112 includes the flow passage portion 110 and the flow diffusion portion 108 together with each other, which reduces the airflow velocity at the position where the flow passage portion 110 is located, ensures the uniformity of the airflow of the fan assembly and effectively improves the operational performance of the fan assembly.

[0048] A second embodiment of the present disclosure provides a set of fans. With regard to the first embodiment, the fan set is further described as follows.

[0049] As shown in Figure 4 and Figure 6, the tongue in Petition 870230104417, dated 11 / 28 / 2023, page 26 / 51 / 26 volute 112 also includes a tongue body 106 connected to the opening of the volute body 104 and the flow diffusion portion 108 and the flow passage portion 110 are arranged in the tongue body 106.

[0050] Furthermore, the flow passage portion 110 is flush with an inner wall of the tongue body 106. During the operation of the fan assembly, the airflow is guided and split directly by the inner wall of the tongue body 106, which allows the airflow pressurized by the fan wheel to flow through the flow passage portion 110 and be finally discharged. In some embodiments, the inner wall of the tongue body 106 defines the flow passage portion 110 as described above.

[0051] Furthermore, the flow diffusion portion 108 is recessed relative to the tongue body 106. In this way, it is ensured that the flow diffusion portion 108 is located at a lower level than the flow passage portion 110. That is, the flow passage area at the position where the flow diffusion portion 108 is located is ensured to be larger than the flow passage area at the position where the flow passage portion 110 is located. In this way, the airflow velocity at the position where the flow diffusion portion 108 is located is reduced to a certain extent, and the airflow velocity at the position where the flow diffusion portion 108 is located is consistent with the airflow velocity at the position where the flow passage portion 110 is located, which achieves uniform air supply from the entire fan assembly.In some embodiments, an interior of the tongue body 106 is provided with a groove that defines the flux diffusion portion above 108.

[0052] In this embodiment, the volute tongue 112 has a simple structure. A structure of the volute tongue 112 and a structure of the entire fan assembly can be simplified and the manufacture of the tongue Petition 870230104417, dated 11 / 28 / 2023, page 27 / 51 / 26 in volute 112 and the manufacture of the entire fan assembly can be facilitated. Furthermore, the recessed flow diffusion portion 108 can further reduce wind resistance at the position where the flow diffusion portion 108 is located. In this way, a higher static pressure can be used to overcome the resistance in the volute 102 in the same volume of air, while allowing for a more uniform and rational distribution of the air volume in the volute 102.

[0053] Furthermore, the flow diffusion portion 108 can be connected directly to the volute body 104 in an air outlet direction from the volute 102. Alternatively, a rounded edge can be formed between the flow diffusion portion 108 and the volute body 104, and thus the flow diffusion portion 108 and the volute body 104 are connected through the rounded edge. Each of the two ways above ensures a smooth connection between the flow diffusion portion 108 and an inner wall of the volute body 104.

[0054] A third embodiment of the present disclosure provides a set of fans. In view of the above embodiment, the set of fans is further provided as follows.

[0055] As shown in Figure 2 and Figure 4, in the axial direction of the fan wheel, an intermediate portion of the flux diffusion portion 108 has a greater depth than the depth of each of the two lateral portions of the flux diffusion portion 108. In some embodiments, a plane that has 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 flux diffusion portion 108 is located on the reference plane L1, and the intermediate portion of the flux diffusion portion 108 has a greater depth than the depth of each of the two side portions of the flux diffusion portion 108 from the reference plane L1 to two sides of the diffusion portion. Petition 870230104417, dated 11 / 28 / 2023, page 28 / 51 / 26 flow 108. In some embodiments, the depth of the diffusion portion of flow 108 is a lowered depth of the diffusion portion of flow 108.

[0056] This embodiment optimizes the depth of the flow diffusion portion 108, which allows the intermediate portion of the flow diffusion portion 108 to have a greater depth than the depth of each of the two lateral portions of the flow diffusion portion 108 in the axial direction of the fan wheel. In this way, the depth of the flow diffusion portion 108 gradually decreases 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 portion 108 to gradually decrease in the axial direction of the fan wheel. That is, in the axial direction of the fan wheel, a flow passage area gradually decreases from the intermediate portion of the flow diffusion portion 108 to the two sides of the flow diffusion portion 108.

[0057] In some embodiments, during the operation of the fan assembly, in the axial direction of the fan wheel, an air volume in the reference plane L1 is maximum and an air volume gradually decreases from the reference plane L1 to both sides of the flow diffusion portion 108. Therefore, in this embodiment, the flow diffusion portion 108 is arranged in the volute tongue 112, which further optimizes the depth of the flow diffusion portion 108. In this way, the depth of the flow diffusion portion 108 corresponds to the air volume at the position where the flow diffusion portion 108 is located, ensuring that the depth of the flow diffusion portion 108 in the reference plane L1 is maximum and the depth on both sides gradually decreases. Therefore, it is ensured that an airflow velocity at the position where the flow diffusion portion 108 is located is uniform.

[0058] Furthermore, in this embodiment, as shown in Figure 4, a cross-section of the flux diffusion portion 108 in the axial direction of Petition 870230104417, dated 11 / 28 / 2023, page 29 / 51 / 26 The fan wheel includes an arc or a plurality of arcs connected to each other. In this way, the depth of the reference plane L1 gradually increases or decreases, which ensures that the reference plane L1 is in a smooth state in the axial direction of the fan wheel. On the one hand, it is ensured that an overall structure of the flow diffusion portion 108 is coordinated and, on the other hand, the flow diffusion portion 108 does not generate wind resistance in the volute 102 to ensure the efficiency of the air supply of the fan assembly.

[0059] Furthermore, in this embodiment, as shown in Figure 4, for the cross-section of the flow diffusion portion 108 in the axial direction of the fan wheel, a height of the flow diffusion portion 108 increases synchronously from the intermediate portion of the flow diffusion portion 108 to both sides of the flow diffusion portion 108. That is, a cross-section of the flow diffusion portion 108 in the axial direction of the fan wheel is symmetrical with respect to the reference plane L1.

[0060] 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 L1 towards both sides, and the amount of airflow is negatively correlated with the distance from its position on the reference plane L1. Therefore, in this embodiment, the shape of the flow diffusion portion 108 is optimized based on the regularity of the air volume distribution, ensuring that the cross-section of the flow diffusion portion 108 in the axial direction of the fan wheel is symmetrical with respect to the reference plane L1. That is, the shape of the flow diffusion portion 108 is ensured to match the air volume distribution and the reference plane L1 is ensured to be in a smooth state in the axial direction of the fan wheel.On the one hand, the overall structure of the flux diffusion portion 108 is ensured to be coordinated and, on the other hand, the flux diffusion portion 108 does not generate a. Petition 870230104417, dated 11 / 28 / 2023, page 30 / 51 / 26 wind resistance in volute 102 to ensure the air supply efficiency of the fan assembly.

[0061] A fourth embodiment of the present disclosure provides a set of fans. With regard to the second embodiment, the set of fans is further provided as follows.

[0062] As shown in Figure 5 and Figure 7, one end of the flow diffusion portion 108 connected to the inner wall of the volute body 104 is located at a lower level than the other end of the flow diffusion portion 108 connected to the inner wall of the tongue body 106. That is, the height of the flow diffusion portion 108 gradually increases in the direction of air outlet from the volute 108.

[0063] Therefore, the height of the flow diffusion portion 108 is optimized, and thus a smooth connection is ensured between the flow diffusion portion 108 and the inner wall of the volute tongue 112. In this way, during the operation of the fan assembly, the airflow flows smoothly out of the volute body 104 and is in a smooth transition state when flowing through the flow diffusion portion 108.

[0064] A fifth embodiment of the present disclosure provides a set of fans. With regard to the fourth embodiment, the set of fans is further provided as follows.

[0065] As shown in Figure 5 and Figure 7, after the air conditioner is mounted, an air outlet 124 of the volute 102 is arranged horizontally. A cross-section of the flow diffusion portion 108 in the radial direction of the fan wheel includes a straight line. Furthermore, a first angle θ between the straight line and a horizontal plane L2 is greater than 8° and less than or equal to 12°. That is, in the air outlet direction of the volute 102, it is ensured that an angle of inclination between a wall surface of the flow diffusion portion 108 and an air supply direction is in the range of 8° to 12° and one side of the flow diffusion portion 108 faces Petition 870230104417, dated 11 / 28 / 2023, page 31 / 51 / 26 for the body in volute 104 is guaranteed to be in a lower position.

[0066] Thus, during the operation of the fan assembly, the airflow pressurized by the fan wheel flows first to the positions where the flow diffusion portion 108 and the flow passage portion 110 are located. Since an angle of inclination in a range of 8° to 12° is formed between the wall surface of the flow diffusion portion 108 and the horizontal plane L2, the airflow can flow smoothly to the flow diffusion portion 108. Furthermore, since the flow diffusion portion 108 is lower than the flow diffusion portion 108, it is ensured that the flow velocity of the airflow passing through the flow diffusion portion 108 is reduced and matches the flow velocity of the airflow passing through the flow passage portion 110.In this way, firstly, a uniform air supply speed from the entire fan assembly can be ensured and, secondly, a smooth and efficient airflow through the flow diffusion portion 108 can be ensured, which reduces the operating noise of the fan assembly and improves the air supply efficiency of the fan assembly.

[0067] In some embodiments, the first angle θ may be 8°, 9°, 10°, 11°, 12° and the like, which is not specifically limited in this document. The first angle may be achieved provided that noise reduction and improved air supply efficiency can be attained, which may be understood by those skilled in the art.

[0068] A sixth embodiment of the present disclosure provides a set of fans. With regard to the fourth embodiment, the set of fans is further provided as follows.

[0069] After the air conditioner is installed, the air outlet 124 of the volute 102 is arranged horizontally. The cross-section of the flow diffusion portion 108 in the radial direction of the fan wheel includes an arc. Petition 870230104417, dated 11 / 28 / 2023, page 32 / 51 / 26 (this embodiment is not shown in the drawings). Furthermore, a second angle is formed between a tangent line of the arc at an end near the fan wheel and the horizontal plane L2 and is greater than 8° and less than or equal to 12°. That is, in the air outlet direction of the volute 102, it is ensured that an angle of inclination between the wall surface of the flow diffusion portion 108 and the air supply direction is in a range of 8° to 12° and one side of the flow diffusion portion 108 facing the volute body 104 is ensured to be located in a lower position.

[0070] Thus, during the operation of the fan assembly, the airflow pressurized by the fan wheel flows first to the positions where the flow diffusion portion 108 and the flow passage portion 110 are located. As there is an angle of inclination in a range of 8° to 12° between the wall surface of the flow diffusion portion 108 and the horizontal plane L2, the airflow can flow smoothly to the flow diffusion portion 108. Furthermore, since the flow diffusion portion 108 is lower than the flow diffusion portion 108, it is ensured that the flow velocity of the airflow passing through the flow diffusion portion 108 is reduced and matches the flow velocity of the airflow passing through the flow passage portion 110.In this way, firstly, the uniform air supply speed of the entire fan assembly can be ensured and, secondly, the smooth and efficient airflow flowing through the flow diffusion portion 108 can be ensured, which reduces the operating noise of the fan assembly and improves the air supply efficiency of the fan assembly.

[0071] In some embodiments, the second angle may be 8°, 9°, 10°, 11°, 12° and the like, which is not specifically limited in this document. The second angle may be implemented provided that noise reduction and improved air supply efficiency can be achieved. Petition 870230104417, dated 11 / 28 / 2023, p. 33 / 51 / 26, which can be understood by those versed in the technique.

[0072] A seventh embodiment of the present disclosure provides a set of fans. With regard to the second embodiment, the set of fans is further provided as follows.

[0073] As shown in Figure 2 and Figure 7, this embodiment optimizes a ratio between a maximum depth H of the flux diffusion portion 108 and an axial dimension L of the volute tongue 112, to ensure that the ratio between the maximum depth H of the flux diffusion portion 108 and the axial dimension L of the volute tongue 112 is greater than or equal to 0.05 and less than or equal to 0.1. In this way, it is guaranteed that a maximum recess depth of the flux diffusion portion 108 in the volute tongue 112 corresponds, that is, it is guaranteed that a maximum recess dimension of the flux diffusion portion 108 in the volute tongue 112 is appropriate.

[0074] In some embodiments, the maximum depth H of the flux diffusion portion 108 directly affects the flux diffusion effect of the flux diffusion portion 108. That is, the greater the maximum depth H of the flux diffusion portion 108, the better the diffusion effect will be at a position where the depth is greater, and the greater the effect on reducing the flow velocity. Therefore, in this embodiment, the ratio between the maximum depth H of the flux diffusion portion 108 and the axial dimension L of the volute tongue 112 is greater than or equal to 0.05, ensuring a sufficient flux diffusion effect of the flux diffusion portion 108.

[0075] Furthermore, if the ratio between the maximum depth H of the flux diffusion portion 108 and the axial dimension L of the volute tongue 112 is too large, the flux diffusion portion 108 may result in lower resistance of the entire volute tongue 112. Therefore, in this embodiment, the ratio between the maximum depth H of the flux diffusion portion 108 and the axial dimension L of the volute tongue 112 is set to be less than or equal to 0.1. Thus, the structure of the diffusion portion of Petition 870230104417, dated 11 / 28 / 2023, page 34 / 51 / 26 flow 108 corresponds to the structure of the volute tongue 112, ensuring the resistance of the volute tongue 112 while ensuring the flow diffusion effect and also ensuring a service life of the volute tongue 112 and a service life of the entire fan assembly.

[0076] In some embodiments, the ratio between the maximum depth H of the flux diffusion portion 108 and the axial dimension L of the volute tongue 112 may be 0.05, 0.06, 0.07, 0.08, 0.09, 0.1 and the like, which is not specifically limited in the present document. Provided that the flux diffusion portion 108 has sufficient flux diffusion effect and a relatively strong resistance, which can be realized and understood by those skilled in the art.

[0077] An eighth embodiment of the present disclosure provides a set of fans. In view of the second embodiment, the set of fans is further provided as follows.

[0078] As shown in Figure 4 and Figure 6, the fan assembly further includes a sinking platform 114, which is disposed in the flow passage portion 110 and located on both sides of the flow diffusion portion 108. The flow passage portion 110 is provided with the sinking platform 114, which can ensure a minimum clearance between the inner wall of the volute 102 and an outer edge of the fan wheel on the volute tongue 112 and can reduce the impact of the airflow on the volute 102. In this way, a flow field within the volute 102 is optimized to effectively prevent vortices from being generated by the airflow on the volute tongue 112, which effectively reduces the fan vortex noise while ensuring the performance of the fan assembly. This, in turn, improves the user comfort of the fan assembly and ensures the efficiency of the air supply from the fan assembly.

[0079] Furthermore, in this embodiment, as shown in Figure 4 and Figure 6, the volute tongue 112 also includes the platform of Petition 870230104417, dated 11 / 28 / 2023, page. 35 / 51 / 26 sinking 114 disposed in the tongue body 106 and the flow diffusion portion 108 is located between two sinking platforms 114. In other words, in this embodiment, the sinking platform 114 is provided in a position on the volute tongue 112 close to each of the two side walls of the volute 102. The sinking platforms 114 are ensured to be respectively located on the two sides of the flow diffusion portion 108 and the flow diffusion portion 108 is ensured to be disposed between the two sinking platforms 114. In some embodiments, during the operation of the fan assembly, the above arrangement of the sinking platforms 114 can ensure a minimum space between the volute tongue 112 and the outer edge of the fan wheel and can reduce the impact of the airflow on the volute 102.In this way, the flow field within the volute 102 is optimized to effectively prevent vortex generation by airflow in the volute tongue 112, which effectively reduces fan vortex noise while ensuring the performance of the fan assembly. This, in turn, improves the user comfort of the fan assembly and ensures the efficiency of the fan assembly's air supply.

[0080] Considering the first embodiment through the eighth embodiment, as shown in Figure 1, an air inlet 122 of the volute 102 is located on two sides of the fan wheel in the axial direction of the fan wheel and the air outlet 124 of the volute 102 is located on one lateral side of the fan wheel. In this way, during the operation of the fan assembly, outside air can flow into the interior of the volute 102 from both sides of the fan wheel in the axial direction and is discharged through the air outlet 124 located on the lateral side of the fan wheel in the axial direction of the fan wheel after being pressurized by the fan wheel.

[0081] Considering the first modality up to the eighth Petition 870230104417, dated 11 / 28 / 2023, page 36 / 51 / 26 modality, as shown in Figure 1, the fan assembly also includes a flow collector 116. The flow collector 116 is arranged in the volute 102 and is located at the air inlet 122 of the volute 102. In this way, during the operation of the fan assembly, the flow collector 116 can achieve a good effect of collecting and directing the flow at the air inlet 122 of the volute 102, thus improving the air supply volume and air supply efficiency of the fan assembly.

[0082] Furthermore, based on the first embodiment through the eighth embodiment, as shown in Figure 1, the volute 102 includes a first housing 118 and a second housing 120 connected to each other. The first housing 118 is provided with the flux diffusion portion 108 and the flux passage portion 110. In some embodiments, the first housing 118 is a lower housing of the volute 102 and the second housing 120 is an upper housing of the volute 102. The first housing 118 is provided with the volute tongue 112 and the volute tongue 112 is provided with the flux diffusion portion 108 and the flux passage portion 110.

[0083] A ninth embodiment of the present disclosure provides air conditioning. The air conditioning includes the fan assembly of any of the first through eighth embodiments.

[0084] The air conditioning in this modality includes the fan assembly according to any of the modalities above. Therefore, the air conditioning has all the beneficial effects of the fan assembly above and will not be repeated here.

[0085] As shown in Figure 1, Figure 2, Figure 3 and Figure 4, an embodiment of the present disclosure provides a fan assembly including the volute 102 and the fan wheel. In this embodiment, the shape of the volute 102 is optimized and the volute tongue 112 includes the flow passage portion 110 and the flow diffusion portion 108 which are Petition 870230104417, dated 11 / 28 / 2023, page 37 / 51 / 26 used cooperatively, allowing the flow passage portion 110 to be located at the higher position than the flow diffusion portion 108 to allow the relative position of the flow diffusion portion 108 to be lower. In this way, the flow passage area of ​​the flow passage portion 110 in the volute tongue 112 can be effectively enlarged and the airflow velocity at the position where the flow passage portion 110 is located can be further reduced, which allows the overall flow velocity of the fan assembly to be relatively uniform.

[0086] Furthermore, in this embodiment, as shown in Figure 5, the volute tongue 112 further includes the tongue body 106 and the tongue body 106 is connected to the opening of the volute body 104. Each flux diffusion portion 108 and flux passage portion 110 is disposed in the tongue body 106. The flux passage portion 110 is disposed to be flush with the inner wall of the tongue body 106 and the flux diffusion portion 108 is recessed relative to the tongue body 106.

[0087] Furthermore, in this embodiment, as shown in Figure 4, the depth of the flux diffusion portion 108 is optimized, allowing the intermediate portion of the flux diffusion portion 108 to have a greater depth than the depth of each of the two lateral portions of the flux diffusion portion 108 in the axial direction of the fan wheel. That is, the depth of the flux diffusion portion 108 gradually decreases from the center to the two sides in the axial direction of the fan wheel, allowing the flux diffusion effect of the flux diffusion portion 108 to gradually decrease in the axial direction of the fan wheel. Additionally, the cross-section of the flux diffusion portion 108 in the axial direction of the fan wheel may include an arc or a plurality of interconnected arcs to ensure that the reference plane L1 is in the smooth state in the axial direction of the fan wheel. Furthermore, the cross-section of the portion of Petition 870230104417, dated 11 / 28 / 2023, page 38 / 51 / 26 flow diffusion 108 in the axial direction of the fan wheel is symmetrical with respect to the reference plane L1, ensuring that the shape of the flow diffusion portion 108 corresponds to the air volume distribution. Furthermore, the height of the flow diffusion portion 108 gradually increases in the air outlet direction of the volute 102, ensuring that the airflow flows smoothly through the flow diffusion portion 108 and that the airflow is in a smooth transition state when flowing through the flow diffusion portion 108.

[0088] Furthermore, in this embodiment, as shown in Figure 7, after the air conditioner is mounted, the air outlet 124 of the volute 102 is arranged horizontally. When the cross-section of the flow diffusion portion 108 in 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 less than or equal to 12°. When the cross-section of the flow diffusion portion 108 in 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 closest to the fan wheel and the horizontal plane L2 and is greater than 8° and less than or equal to 12°.

[0089] Furthermore, in this embodiment, the maximum depth H of the flux diffusion portion 108 and the axial dimension L of the volute tongue 112 are optimized, to ensure that the ratio between the maximum depth H of the flux diffusion portion 108 and the axial dimension L of the volute tongue 112 is greater than or equal to 0.05 and less than or equal to 0.1.

[0090] Furthermore, in this embodiment, as shown in Figure 6, the volute tongue 112 also includes the sinking platforms 114, which are arranged in the flow passage portion 110 and located on both sides of the flow diffusion portion 108. In this way, the minimum clearance between the inner wall of the volute 102 and the outer edge of the fan wheel can be ensured. Meanwhile, the impact of the airflow on the volute 102 is reduced and the flow field within the volute 102 is optimized. Petition 870230104417, dated 11 / 28 / 2023, page 39 / 51 / 26 to effectively prevent the vortex from being generated by the airflow in the volute tongue 112, which effectively reduces fan vortex noise while ensuring the performance of the fan assembly. This, in turn, improves the user comfort of the fan assembly and ensures the efficiency of the air supply of the fan assembly. In some embodiments, the sinking platforms 114 are arranged in the volute tongue 112 and the flow diffusion portion 108 is located between the two sinking platforms 114.

[0091] Furthermore, in this embodiment, as shown in Figure 1, the air inlet 122 of the volute 102 is located on each of the two sides of the fan wheel in the axial direction. The air outlet 124 of the volute 102 is located on the lateral side of the fan wheel in the radial direction. In addition, the flow collector 116 is disposed at the air inlet 122 of the volute 102 and the flow collector 116 can achieve the good effect of collecting and guiding the flow at the air inlet 122 of the volute 102, thus improving the air supply volume and air supply efficiency of the fan assembly.

[0092] In some embodiments, the fan assembly is a central component of the air conditioner. The performance of the fan assembly determines the size, performance, and sound quality of the air conditioner. Currently, air conditioners generally exhibit high noise, large dimensions, and poor heat exchange effect due to technical limitations in the fan assembly. The present invention provides a fan assembly that can solve the technical problems of high noise, large size, and poor heat exchange effect of air conditioners.

[0093] As shown in Figure 1, Figure 2, Figure 3 and Figure 4, the fan assembly of the present disclosure includes the volute 102, the fan wheel, the flow diffusion portion 108 and the flow passage portion 110. The volute 102 includes the volute body 104 and the volute tongue 112. Petition 870230104417, dated 11 / 28 / 2023, page 40 / 51 / 26 connected to the volute body opening 104. As shown in Figure 4, the volute tongue 112 includes the flux diffusion portion 108 and the flux passage portion 110 cooperating with each other. The flux diffusion portion 108 is in a lowered state and lower than the flux passage portion 110, in which a lowered direction is directed outwards from the volute tongue 112. Furthermore, as shown in Figure 4, the plane that has 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 flux diffusion portion 108 in the axial direction of the fan wheel is symmetrical with respect to the reference plane L1.Furthermore, when the cross-section of the flux diffusion portion 108 in the radial direction of the fan wheel includes the straight line, as shown in Figure 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 less than or equal to 12°. When the cross-section of the flux diffusion portion 108 in 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 near the fan wheel and the horizontal plane L2 and is greater than 8° and less than or equal to 12°. Additionally, the ratio between the maximum depth H of the flux diffusion portion 108 and the axial dimension L of the volute tongue 112 is greater than or equal to 0.05 and less than or equal to 0.1. Furthermore, the cross-section of the flux diffusion portion 108 in the axial direction of the fan wheel includes an arc or includes a plurality of arcs connected to each other.Furthermore, in the air supply direction of the volute 102, the flow diffusion portion 108 can be directly connected to the inner wall of the volute body 104, or a rounded edge can be formed between the flow diffusion portion 108 and the inner wall of the volute body 104. As shown in Figure 6, the sinking platforms 114 can be provided in the position where the flow passage portion 110 is located. Petition 870230104417, dated 11 / 28 / 2023, page 41 / 51 / 26

[0094] In the case of the same noise, the air conditioner including the fan assembly of the present disclosure can provide the largest volume of air to satisfy the air adjustment in the larger space. Consequently, 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 conditioning can be effectively improved.

[0095] 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 the resistance in an air supply pipe and reduces the mounting components in the air conditioner. Consequently, in the case of the same air volume, a heat exchanger surface applying the fan assembly of the present disclosure has a more uniform flow velocity distribution.

[0096] In the case of the same noise and the same volume of air, the air conditioner including the fan assembly of the present disclosure has a smaller volume, which may meet the lower cost or adapt to more diverse mounting space requirements.

[0097] In the description of this disclosure, the term “plurality” means two or more, unless otherwise specified. The orientation or position indicated by terms such as “above” and “below” refers to the orientation or position 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 a limitation to the present disclosure. Terms such as “connect,” “install,” “repair,” and the like should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or a connection as a piece; or a direct or indirect connection by means of an intermediate element. For those Petition 870230104417, dated 11 / 28 / 2023, p. 42 / 51 / 26 versed in the art, the specific meaning of the above terms in the present disclosure may be understood according to specific circumstances.

[0098] In the description of this disclosure, the use of terms such as “a modality,” “some modalities,” and “a specific modality” means that specific resources, structures, materials, or features described in conjunction with the modality or example are included in at least one modality or example of this disclosure. In this descriptive report, the schematic representations of the above terms do not necessarily refer to the same modality or example. Furthermore, the specific resources, structures, materials, or features described may be combined in any one or more modalities or examples in an appropriate manner.

[0099] Although some modalities of the present revelation have been described above, the present revelation is not limited to these modalities. For those skilled in the art, various alterations and variations may be made to the present revelation. Any modification, equivalent substitution, improvement, and the like, made within the spirit and principles of the present revelation, shall fall within the scope of the present revelation. Petition 870230104417, dated 11 / 28 / 2023, pages 43 / 51

Claims

1 / 3 CLAIMS 1. Fan assembly comprising: a volute (102) comprising a volute body (104) and a volute tongue (112) connected to an opening in the volute body (104); and a fan wheel disposed at least partially in the volute body (104), wherein the volute tongue (112) comprises a flow diffusion portion (108) and a flow passage portion (110) in an axial direction from the fan wheel, wherein the flow passage portion (110) is located on two sides of the flow diffusion portion (108) and located at a higher position than the flow diffusion portion (108); characterized in that the volute tongue (112) further comprises a sinking platform (114), wherein the sinking platform (114) is disposed in the flow passage portion (110) and located on both sides of the flow diffusion portion (108).

2. Fan assembly according to claim 1, characterized in that the volute tongue (112) further comprises a tongue body (106), the flow diffusion portion (108) and the flow passage portion (110) which are disposed in the tongue body (106) and the flow diffusion portion (108) which is recessed relative to the tongue body (106).

3. Fan assembly according to claim 2, characterized in that in the axial direction of the fan wheel, an intermediate portion of the flow diffusion portion (108) has a greater depth than the depth of each of the two lateral portions of the flow diffusion portion (108).

4. Fan assembly according to claim 3, Petition 870240062954, dated 07 / 25 / 2024, page 12 / 18 2 / 3 characterized in that a cross-section of the flux diffusion portion (108) in the axial direction of the fan wheel comprises an arc or a plurality of arcs connected to each other.

5. Fan assembly according to any one of claims 2 to 4, characterized in that the height of the flow diffusion portion (108) gradually increases in the direction of air outlet from the volute (102).

6. Fan assembly according to claim 5, characterized in that a cross-section of the flux diffusion portion (108) in a radial direction of the fan wheel comprises a straight line, a first angle between the straight line and a horizontal plane being greater than 8° and less than or equal to 12°; or a cross-section of the flux diffusion portion (108) in a radial direction of the fan wheel comprises an arc, a second angle between a tangent line of the arc at an end near the fan wheel and the horizontal plane being greater than 8° and less than or equal to 12°.

7. Fan assembly according to claim 5, characterized in that the flow diffusion portion (108) is connected to an inner wall of the volute body (104) in a radial direction of the fan wheel; or a rounded edge is formed between the flow diffusion portion (108) and an inner wall of the volute body (104) in a radial direction of the fan wheel.

8. Fan assembly according to claim 2, characterized in that a ratio between a maximum depth of the flux diffusion portion (108) and an axial dimension of the volute tongue (112) is greater than or equal to 0.05 and less than or equal to 0.

1.

9. Fan assembly according to any of claims 1 to 4, characterized in that the volute (102) has an air inlet (122) located on both sides of the fan wheel in the axial direction of the fan wheel; and the fan assembly also comprises a flow collector (116) disposed in the air inlet (122) of the volute (102).

10. Air conditioning, characterized in that it comprises the set of fans, as defined in any one of claims 1 to 9. Petition 870240062954, dated 07 / 25 / 2024, p. 14 / 18

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