Fan assembly and heat pump equipment

Abstract

The utility model discloses a fan assembly and heat pump equipment, and belongs to the technical field of household appliances. Wherein the fan assembly comprises a shell, a volute and a centrifugal wind wheel, an opening is formed in the side, facing the heat exchanger, of the shell, and the heat exchanger covers the opening; the volute is installed in the inner cavity and connected with the shell, an air duct communicated with the air outlet is formed in the volute, air inlets are formed in the side, facing the heat exchanger, of the volute and the side, back to the heat exchanger, of the volute respectively, and the two air inlets are communicated with the air duct respectively; the centrifugal wind wheel is arranged in the air duct and located between the two air inlets. The centrifugal wind wheel can suck air passing through the heat exchanger into the air duct through the two air inlets. At least part of the outer wall of the volute and the inner wall of the shell are arranged in a spaced mode, an air inlet channel is defined, and the air inlet channel communicates with part of the structure of the opening and an air inlet opposite to the heat exchanger. More air can flow through the heat exchanger for heat exchange, the total amount of air flow penetrating through the heat exchanger is increased, and the heat exchange efficiency of the heat exchanger is improved.

Description

Technical Field

[0001] This utility model relates to the field of household appliance technology, and in particular to a fan assembly and a heat pump device. Background Technology

[0002] In related technologies, the volute casing is typically arranged side-by-side with the evaporator, with an air inlet connected to a ventilation duct on the side of the volute casing facing the evaporator. A centrifugal impeller within the duct generates suction through rotation, drawing air into the duct. During this process, the airflow passes through the evaporator to complete heat exchange. However, the airflow passing through the evaporator can only enter the duct through the air inlet, limiting the total amount of airflow passing through the evaporator and making it difficult to improve the evaporator's heat exchange efficiency. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a fan assembly that can increase the airflow entering the air duct, thereby increasing the total airflow passing through the heat exchanger.

[0004] This utility model also proposes a heat pump device that includes the above-mentioned fan components.

[0005] According to a first aspect of the present invention, a fan assembly is applied to a heat pump device having a heat exchanger. The fan assembly is arranged side-by-side with the heat exchanger. The fan assembly includes: a housing, a volute, and a centrifugal impeller. The housing has an inner cavity, and the surface of the housing has an air outlet. The housing has an opening on the side facing the heat exchanger, and the heat exchanger covers the opening. The volute is installed in the inner cavity and connected to the housing. An air duct communicating with the air outlet is formed inside the volute. The volute has air inlets on the side facing the heat exchanger and the side facing away from the heat exchanger, and the two air inlets are respectively connected to the air duct. The centrifugal impeller is disposed in the air duct and located between the two air inlets. The centrifugal impeller can draw air passing through the heat exchanger into the air duct through the two air inlets respectively. At least a portion of the outer wall of the volute is spaced apart from the inner wall of the housing and defines an air intake channel. The air intake channel communicates with a portion of the structure of the opening and the air inlet facing away from the heat exchanger.

[0006] The fan assembly according to the embodiments of the present utility model has at least the following beneficial effects:

[0007] The fan assembly of this utility model has an opening on the side of the housing facing the heat exchanger, allowing the heat exchanger to cover the opening. A volute is installed inside the inner cavity, with air inlets on both the side facing the heat exchanger and the side facing away from the heat exchanger. A centrifugal impeller is positioned between the two air inlets. At least a portion of the outer wall of the volute is spaced apart from the inner wall of the housing, defining an air intake channel. This air intake channel communicates with the air inlet facing away from the heat exchanger. Therefore, when the centrifugal impeller is running, a portion of the air passing through the heat exchanger enters the air duct within the volute through the air inlet facing the heat exchanger, while another portion flows through the air intake channel to the air inlet facing away from the heat exchanger and enters the air duct. By providing an additional inlet for air to enter the air duct, the airflow into the air duct is increased, allowing more air to flow through the heat exchanger for heat exchange. This increases the total airflow through the heat exchanger, thereby improving the heat exchange efficiency of the heat exchanger. When applied to heat pump equipment, this significantly enhances the heat exchange capacity of the heat pump equipment, thus improving its performance.

[0008] According to some embodiments of the present invention, the volute is connected to the housing on opposite sides along the circumference of the volute, and the air intake channel includes a first channel and a second channel. The first channel is formed between the top wall of the volute and the housing, and the second channel is formed between the bottom wall of the volute and the housing.

[0009] According to some embodiments of the present invention, the volute includes a first sidewall and a second sidewall. The first sidewall is disposed facing the heat exchanger, and the second sidewall is disposed away from the heat exchanger. The first sidewall and the second sidewall are respectively provided with the air inlet. A third channel is defined between the second sidewall and the sidewall of the housing away from the heat exchanger. The third channel extends along the height direction of the housing and communicates with the first channel and the second channel respectively.

[0010] According to some embodiments of the present invention, a plurality of connecting posts are provided between the second sidewall and the sidewall of the housing, the plurality of connecting posts are spaced apart, one end of the connecting post is connected to the housing, and the other end is connected to the volute.

[0011] According to some embodiments of this utility model, the air outlet is located on the top wall of the housing. The volute includes an air outlet portion and a volute chamber portion. The air outlet portion and the volute chamber portion are arranged sequentially from top to bottom along the height direction of the housing and together form the air duct. The air outlet portion is connected to the air outlet. The centrifugal impeller is located in the volute chamber portion. The air outlet portion has a third side wall and a fourth side wall arranged opposite to each other along the first direction. The third side wall is connected to the top wall of the volute chamber portion through a volute tongue. There are two first channels. The third side wall, the top wall of the volute chamber portion, and the inner wall of the housing form one of the first channels. The fourth side wall and the inner wall of the housing form the other first channel.

[0012] According to some embodiments of the present invention, the two ends of the volute portion along the first direction are respectively connected to the side wall of the shell, and the bottom wall of the volute portion is spaced apart from the bottom wall of the shell, forming the second channel.

[0013] According to some embodiments of the present invention, on the projection plane of the heat exchanger in the direction toward the shell, the projection of the heat exchanger covers the projection of the air intake channel.

[0014] According to some embodiments of the present invention, the axial direction of the centrifugal impeller is consistent with the line direction connecting the two air inlets. The centrifugal impeller is provided with a partition, which divides the centrifugal impeller into two suction zones along the axial direction. The two suction zones are respectively connected to the two air inlets.

[0015] According to some embodiments of the present invention, the volute is provided with a first sidewall and a second sidewall. The first sidewall faces the heat exchanger, and the second sidewall faces away from the heat exchanger. The first sidewall and the second sidewall are respectively provided with the air inlet. The air inlet of the second sidewall is the second air inlet. The sidewall of the casing facing away from the heat exchanger is provided with a mounting seat. The mounting seat protrudes towards the centrifugal impeller and passes through the second air inlet. The partition is provided with a clearance groove extending away from the mounting seat. The fan assembly also includes a motor. The motor is installed on the mounting seat and located in the clearance groove. The motor is connected to the centrifugal impeller.

[0016] According to some embodiments of the present invention, the fan assembly further includes a fixing plate, which is a metal part, with one end of the fixing plate connected to the mounting base and the other end connected to the motor.

[0017] According to some embodiments of the present invention, the fan assembly further includes two air guide rings, which are respectively disposed at the two air inlets. The air guide rings are arranged circumferentially along the air inlets and are fixedly connected to the volute. The cross-sectional area of ​​the air guide rings gradually decreases along the air inlet direction.

[0018] The heat pump device according to a second aspect embodiment of the present invention includes a heat exchanger and a fan assembly as described in the first aspect embodiment.

[0019] The heat pump device according to the embodiments of this utility model has at least the following beneficial effects:

[0020] The heat pump equipment adopts the fan assembly of the first aspect embodiment. By providing an additional inlet for the air passing through the heat exchanger to enter the air duct, the airflow into the air duct is increased, allowing more air to flow through the heat exchanger for heat exchange. This increases the total airflow through the heat exchanger, improves the heat exchange efficiency of the heat exchanger, thereby enhancing the heat exchange efficiency and heat exchange capacity of the heat pump equipment, and ultimately improving the performance of the heat pump equipment.

[0021] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0023] Figure 1 This is a schematic diagram of the structure of a heat pump device according to an embodiment of the present invention;

[0024] Figure 2 This is a schematic diagram of the structure of a fan assembly according to an embodiment of the present invention;

[0025] Figure 3 This is a top view of a fan assembly according to an embodiment of the present invention;

[0026] Figure 4 This is a side view of a fan assembly according to an embodiment of the present invention;

[0027] Figure 5 for Figure 4 A cross-sectional view along the BB direction;

[0028] Figure 6 for Figure 3 A cross-sectional view along the AA direction;

[0029] Figure 7 This is an exploded view of a fan assembly according to an embodiment of the present invention;

[0030] Figure 8 This is a schematic diagram of the structure of a centrifugal impeller according to an embodiment of the present invention.

[0031] Icon labels:

[0032] Fan assembly 1000; Heat pump equipment 2000; Evaporator 2100; Housing 2200; Receiving cavity 2210; Air inlet cavity 2211; Air outlet cavity 2212; Top cover 2220; Air inlet 2221; Air outlet 2222;

[0033] Housing 100; Inner cavity 110; Air outlet 120; Opening 130; Air inlet channel 140; First channel 141; Second channel 142; Third channel 143; Mounting base 150;

[0034] 200 volute; 210 air duct; 220 air inlet; 221 first air inlet; 222 second air inlet; 230 first side wall; 240 second side wall; 250 connecting column; 260 air outlet; 161 third side wall; 162 fourth side wall; 270 volute chamber; 280 volute tongue;

[0035] Centrifugal impeller 300; baffle plate 310; clearance groove 311; air intake zone 320; blades 330;

[0036] Fixed plate 400; air guide ring 500. Detailed Implementation

[0037] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0038] In the description of this utility model, it should be understood that the orientation descriptions, such as up, down, etc., are based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0039] In the description of this utility model, the use of "first" and "second" is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features or the order of the technical features.

[0040] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0041] In related technologies, the volute and evaporator in heat pump equipment are typically arranged side-by-side, with an air inlet connected to a ventilation duct on the side of the volute facing the evaporator. A centrifugal fan is installed inside the duct, which draws air in as it rotates. During this process, air flows from the other side of the evaporator towards the volute and passes through the evaporator, thus completing heat exchange. However, after heat exchange in the evaporator, the airflow can only enter the duct through a single air inlet, significantly limiting the total amount of airflow passing through the evaporator and hindering the improvement of the evaporator's heat exchange efficiency.

[0042] Furthermore, only a portion of the evaporator directly opposite the air inlet receives sufficient airflow. In areas far from the inlet, airflow is significantly reduced, or even nonexistent, resulting in a large portion of the evaporator being underutilized and reducing its effective heat exchange area. Even with increased evaporator size, the actual area involved in heat exchange remains relatively small, not only lowering heat exchange efficiency but also increasing energy consumption and operating costs.

[0043] Therefore, some embodiments of this utility model propose a fan assembly 1000, suitable for heat pump equipment 2000, as detailed below. Figures 1 to 8 The fan assembly 1000 is described below.

[0044] For ease of description, the following description will use a heat pump unit 2000 as an example. (Refer to...) Figure 1 As shown, in this embodiment of the present invention, the heat pump device 2000 includes a housing 2200, a fan assembly 1000, and functional components such as a heat exchanger, wherein the heat exchanger is an evaporator 2100. The housing 2200 has an internal cavity 2210, within which the fan assembly 1000 and the evaporator 2100 are housed. The evaporator 2100 divides the inner cavity 110 into an air inlet cavity 2211 and an air outlet cavity 2212. The top cover 2220 of the housing 2200 has an air inlet 2221 and an air outlet 2222. The air inlet cavity 2211 communicates with the air inlet 2221, allowing external air to enter the air inlet cavity 2211 through the air inlet 2221. The fan assembly 1000 is housed in the air outlet cavity 2212, thus being arranged side-by-side with the evaporator 2100, and is connected to the air outlet 2222.

[0045] Specifically, refer to Figure 2 and Figure 3As shown, in this embodiment of the present invention, the fan assembly 1000 includes: a housing 100, a volute 200, and a centrifugal impeller 300. The top wall of the housing 100 has an air outlet 120, which communicates with an air outlet 2222. The housing 100 has an internal cavity 110 for mounting the volute 200. The volute 200 is disposed within the internal cavity 110 and connected to the housing 100. An air duct 210 is formed within the volute 200 and communicates with the air outlet 120. In this embodiment, the volute 200 and the housing 100 can be integrally formed or fixedly connected; this embodiment does not limit the specific type of connection.

[0046] Combination Figure 1 and Figure 2 It is understood that, in one example, the evaporator 2100 is located on the right side of the housing 100, and the side of the housing 100 facing the evaporator 2100 (the right side of the housing 100) has an opening 130 communicating with the inner cavity 110. In this embodiment, the evaporator 2100 is generally plate-shaped; therefore, the opening 130 is square in shape, and its size matches that of the evaporator 2100, allowing the evaporator 2100 to cover the opening 130. Based on this, the air flowing from the air inlet chamber 2211 to the housing 100 will all enter the inner cavity 110 after passing through the evaporator 2100.

[0047] Reference Figure 4 , Figure 5 and Figure 6 As shown in this embodiment of the present invention, the volute 200 is provided with two air inlets 220, one of which is a first air inlet 221, located on the side of the volute 200 facing the evaporator 2100, and the other is a second air inlet 222, located on the side of the volute 200 away from the evaporator 2100. The two air inlets 220 respectively penetrate the sidewall of the volute 200 and thus communicate with the air duct 210.

[0048] Reference Figure 2As shown, in this embodiment of the present invention, at least a portion of the outer wall of the volute 200 is spaced apart from the inner wall of the housing 100, defining an air intake channel 140. It is understood that a portion of the outer wall of the volute 200 is connected to the housing 100, thereby fixing the volute 200, while another portion of the outer wall of the volute 200 is spaced apart from the inner wall of the housing 100. Based on this, an air intake channel 140 for airflow can be formed between the inner wall of the housing 100 and the outer wall of the volute 200 spaced apart from the inner wall of the housing 100. The air intake channel 140 connects a portion of the structure of the opening 130 and the air inlet 220 facing away from the evaporator 2100. It is understood that in this embodiment, the opening 130 is formed by the front sidewall, rear sidewall, top wall, and bottom wall of the housing 100. The volute 200 will partially block the opening 130; therefore, the air intake channel 140 connects with the portion of the opening 130 not blocked by the volute 200.

[0049] For example, the air intake passage 140 can be on both sides of the volute 200 along the front-to-back direction of the heat pump device 2000, or on both sides of the volute 200 along the height direction of the heat pump device 2000. The air intake passage 140 extends along the line connecting the evaporator 2100 and the housing 100, thereby connecting the left and right sides of the volute 200.

[0050] Reference Figure 5 As shown, in this embodiment of the present invention, the centrifugal impeller 300 is disposed in the air duct 210 and is located between two air inlets 220. Based on this, when the centrifugal impeller 300 rotates, the suction force it generates can draw air from the inner cavity 110 into the air duct 210 through the first air inlet 221 and the second air inlet 222.

[0051] Specifically, in combination Figure 5 It is understood that in this embodiment of the present invention, air from the external environment enters the air intake chamber 2211 through the air inlet 2221. Under the action of the centrifugal impeller 300, the air in the air intake chamber 2211 passes through the evaporator 2100 and enters the inner cavity 110. Among them, a part of the air can directly enter the air duct 210 from the first air inlet 221, while the other part of the air can flow along the air intake channel 140, flow from the right side of the volute 200 to the left side of the volute 200, and enter the air duct 210 from the second air inlet 222. Subsequently, the airflow flows along the air duct 210 and passes through the air outlet 120 and the air outlet 2222 in sequence, and is finally discharged.

[0052] It is understood that by providing an additional inlet for the air in the inner cavity 110 to enter the air duct 210, the airflow into the air duct 210 is increased, thereby allowing more air to flow through the evaporator 2100 for heat exchange, increasing the total airflow through the evaporator 2100, and thus improving the heat exchange efficiency of the evaporator 2100. When applied to the heat pump device 2000, it can significantly enhance the heat exchange capacity of the heat pump device 2000, thereby improving the performance of the heat pump device 2000.

[0053] Reference Figure 2 and Figure 4 As shown, in this embodiment of the invention, the volute 200 is connected to the housing on opposite sides along its circumference. Specifically, the volute 200 is connected to the housing 100 on both sides along a first direction, which is parallel to the horizontal direction and perpendicular to the axial direction of the centrifugal impeller 300. In one example, the front side of the volute 200 is connected to the front side of the housing 100, and the rear side of the volute 200 is connected to the rear side of the housing 100. Based on this, the air intake channel 140 is divided into upper and lower parts by the volute 200, namely, the first channel 141 and the second channel 142. Specifically, the first channel 141 is defined between the volute 200 and the top wall of the housing 100, and the second channel 142 is defined between the volute 200 and the bottom wall of the housing 100.

[0054] In this embodiment of the invention, on the projection plane along the direction from the evaporator 2100 toward the housing 100, the projection of the evaporator 2100 overlaps the projection of the air intake channel 140. Specifically, in conjunction with... Figure 5 It can be understood that the projection of the opening 130 also covers the projection of the air intake channel 140, wherein the first air intake 221 corresponds to the middle area of ​​the evaporator 2100, the first channel 141 corresponds to the top area of ​​the evaporator 2100, and the second channel 142 corresponds to the bottom area of ​​the evaporator 2100.

[0055] Understandably, air flowing out from the middle region of the evaporator 2100 can directly enter the air duct 210 through the first air inlet 221, while air flowing out from the top region of the evaporator 2100 can flow along the first channel 141 and enter the air duct 210 through the second air inlet 222. Air flowing out from the bottom region of the evaporator 2100 can flow along the second channel 142 and enter the air duct 210 through the second air inlet 222. This achieves reasonable airflow distribution, thereby increasing the total airflow entering the air duct 210, and consequently increasing the total airflow passing through the evaporator 2100. Furthermore, the top and bottom regions of the evaporator 2100 receive sufficient airflow, thereby improving the utilization rate of the heat exchange area of ​​the evaporator 2100 and thus enhancing the heat exchange efficiency of the evaporator 2100.

[0056] Reference Figure 4 , Figure 5 and Figure 6 As shown, in this embodiment of the invention, the sidewall of the volute 200 facing the evaporator 2100 is a first sidewall 230, and the sidewall of the volute 200 facing away from the evaporator 2100 is a second sidewall 240. The first sidewall 230 has a first air inlet 221, and the second sidewall 240 has a second air inlet 222. It is understood that, to avoid the second air inlet 222 being sealed by the sidewall of the casing 100 facing away from the evaporator 2100, in this embodiment, the second sidewall 240 is spaced apart from the sidewall of the casing 100 facing away from the evaporator 2100.

[0057] Specifically, refer to Figure 5 As shown, in this embodiment of the invention, the second sidewall 240 and the sidewall of the housing 100 facing away from the evaporator 2100 form a third channel 143. The third channel 143 extends along the height direction of the housing 100. Therefore, the upper end of the third channel 143 communicates with the first channel 141, and the lower end of the third channel 143 communicates with the second channel 142. In this embodiment, air flowing out from the top region of the evaporator 2100 flows along the first channel 141 to the upper end of the third channel 143, then flows downward and enters the air duct 210 through the second air inlet 222. Air flowing out from the bottom region of the evaporator 2100 flows along the second channel 142 to the lower end of the third channel 143, then flows upward and enters the air duct 210 through the second air inlet 222.

[0058] Since the volute 200 is connected to the housing 100 only through its upper end and its two ends along the front-rear direction, the first sidewall 230, the second sidewall 240, and the bottom wall of the volute 200 lack direct fixed support. Therefore, referring to... Figure 5 and Figure 6 As shown in this embodiment of the invention, a plurality of connecting posts 250 are provided between the second sidewall 240 and the sidewall of the housing 100 facing away from the evaporator 2100. The plurality of connecting posts 250 are evenly arranged on the second sidewall 240, and are spaced apart from each other. In this embodiment, the two ends of the connecting posts 250 are respectively connected to the housing 100 and the volute 200, thereby reducing the vibration of the volute 200 caused by wind pressure and improving the overall stability of the volute 200.

[0059] Reference Figure 4As shown in the embodiment of this utility model, the volute 200 includes an air outlet 260 and a volute chamber 270 connected to each other. The air outlet 260 and the volute chamber 270 are arranged sequentially from top to bottom along the height direction of the housing 100. Both the air outlet 260 and the volute chamber 270 are hollow structures. Therefore, the air outlet 260 and the volute chamber 270 together form the air duct 210. The upper end of the air outlet 260 is connected to the air outlet 120. The centrifugal impeller 300 is located inside the volute chamber 270. The first air inlet 221 and the second air inlet 222 are respectively opened on opposite sides of the volute chamber 270.

[0060] Continue to refer to Figure 4 As shown in this embodiment of the present invention, the air outlet 260 is provided with a third sidewall 161 and a fourth sidewall 162. The third sidewall 161 and the fourth sidewall 162 are arranged opposite to each other along a first direction. The third sidewall 161 faces the front side, and the fourth sidewall 162 faces the rear side. A volute tongue 280 of the volute 200 is formed between the third sidewall 161 and the top wall of the volute chamber 270. The two ends of the volute tongue 280 are respectively connected to the third sidewall 161 and the top wall of the volute chamber 270.

[0061] Combination Figure 4 and Figure 6 It is understood that in this embodiment of the invention, the air outlet 260 is provided with first channels 141 on its front and rear sides. Specifically, the third sidewall 161, the top wall of the volute 270, the front sidewall of the housing 100, and the top wall of the housing 100 form one first channel 141, and the fourth sidewall 162, the rear sidewall of the housing 100, and the top wall of the housing 100 form another first channel 141. It is understood that the two first channels 141 correspond to the two corner areas of the top region of the evaporator 2100, and therefore, the air flowing out from the top region of the evaporator 2100 will be diverted by the air outlet 260 to the first channels 141 on both sides.

[0062] Reference Figure 4 and Figure 6 As shown, in this embodiment of the invention, the front and rear sides of the volute 270 are connected to the housing 100, and the bottom wall of the volute 270 is spaced apart from the bottom wall of the housing 100. Therefore, the bottom wall of the volute 270 and the bottom wall of the housing 100 form a second channel 142, meaning that the lower side of the volute 270 is unobstructed, and the air flowing out from the bottom area of ​​the evaporator 2100 can flow directly and smoothly along the second channel 142 to the third channel 143. It can be understood that the arrangement of the two first channels 141 and the second channel 142 enables air intake in the central area and surrounding areas of the evaporator 2100, ensuring airflow throughout the entire evaporator 2100, improving the uniformity of airflow on the surface of the evaporator 2100, and maximizing the heat exchange efficiency of the evaporator 2100.

[0063] If the volute 200 is equipped with only a single air inlet 220, then no matter how large the size of the evaporator 2100 increases, the top and bottom areas of the evaporator 2100 will be difficult to fully utilize for heat exchange. Conversely, this embodiment of the invention, by providing first channels 141 on both sides of the air outlet 260 and a second channel 142 on the lower side of the volute 270, ensures that both the top and bottom areas of the evaporator 2100 receive sufficient airflow, thereby improving the utilization rate of the heat exchange area of ​​the evaporator 2100. Therefore, even with a large-sized evaporator 2100, the fan assembly 1000 of this embodiment can be adapted. Furthermore, the heat pump device 2000 can reduce the size of the evaporator 2100 while maintaining the same heat exchange performance, thereby reducing costs.

[0064] Reference Figure 7 and Figure 8 As shown in this embodiment of the invention, the line connecting the first air inlet 221 and the second air inlet 222 is aligned with the direction of the evaporator 2100 toward the housing 100, and the axial direction of the centrifugal impeller 300 is also aligned with the direction of the evaporator 2100 toward the housing 100, thereby ensuring that the suction force generated by the centrifugal impeller 300 can simultaneously draw air into the first air inlet 221 and the second air inlet 222. Specifically, a partition 310 is provided in the middle of the centrifugal impeller 300, extending radially along the centrifugal impeller 300. The blades 330 of the centrifugal impeller 300 are fixedly connected to the partition 310, thereby dividing the centrifugal impeller 300 into two suction zones 320. The two suction zones 320 are arranged side by side, with one suction zone 320 connected to the first air inlet 221 and the other suction zone 320 connected to the second air inlet 222.

[0065] Based on this, when the centrifugal impeller 300 rotates, the suction zone 320 corresponding to the first air inlet 221 can draw the air flowing out from the middle region of the evaporator 2100 into the first air inlet 221, and the suction zone 320 corresponding to the second air inlet 222 can draw the air flowing through the first channel 141 and the second channel 142 into the second air inlet 222.

[0066] Reference Figure 7As shown, in this embodiment of the invention, the fan assembly 1000 further includes a motor (not shown) for driving the centrifugal impeller 300 to rotate. A mounting base 150 is provided on the side wall of the housing 100 facing away from the evaporator 2100, passing through the second air inlet 222. The mounting base 150 protrudes from the side wall of the housing 100 facing away from the evaporator 2100 and extends towards the centrifugal impeller 300. Correspondingly, the partition 310 is provided with a clearance groove 311, which extends away from the side wall of the housing 100 facing away from the evaporator 2100, thereby creating sufficient mounting space between the mounting base 150 and the partition 310 for placing the motor. The motor is detachably connected to the mounting base 150 and located within the clearance groove 311, and the motor's drive shaft is connected to the centrifugal impeller 300. In one example, the motor is connected to the mounting base 150 by fasteners.

[0067] Continue to refer to Figure 7 As shown, in this embodiment of the invention, both the housing 100 and the volute 200 are made of plastic, thus their strength is limited. To improve the installation stability of the motor and reduce the risk of deformation or damage to the mounting base 150 caused by motor installation, the fan assembly 1000 also includes a fixing plate 400. The fixing plate 400 is a metal plate and is connected to both the mounting base 150 and the motor. The metal fixing plate 400 provides a stable support platform for the motor and also distributes the pressure exerted by the motor on the mounting base 150, thereby reducing the possibility of deformation or damage to the mounting base 150 and extending the service life of the housing 100.

[0068] Reference Figure 5 and Figure 7 As shown, in this embodiment of the present invention, the fan assembly 1000 further includes two air guide rings 500, one of which is disposed at the first air inlet 221, and the other air guide ring 500 is disposed at the second air inlet 222. It is understood that the air guide rings 500 are arranged around the air inlet 220 and are fixedly connected to the volute 200. It should be noted that the air guide rings 500 can be welded to the volute 200, fastened to the volute 200 with fasteners, or installed to the volute 200 using other fixing methods; this embodiment does not limit this.

[0069] In this embodiment, the cross-sectional area of ​​the air guide ring 500 gradually decreases along the air intake direction of the air inlet 220. Specifically, the cross-sectional area of ​​the air guide ring 500 located at the first air inlet 221 gradually decreases from right to left, and the cross-sectional area of ​​the air guide ring 500 located at the second air inlet 222 gradually decreases from left to right. It can be understood that setting the air guide ring 500 can accelerate the airflow, making the airflow more concentrated and stable as it enters the air inlet 220.

[0070] This utility model also provides a heat pump device 2000, including a heat exchanger and the fan assembly 1000 described in the above embodiment. Specifically, the heat pump device 2000 can be a heat pump water heater or a heat pump heating system; this embodiment does not limit this. In this embodiment, the heat exchanger can be an evaporator 2100.

[0071] The heat pump device 2000 uses the fan assembly 1000 of the above embodiment. By providing an additional inlet for the air passing through the heat exchanger into the air duct 210, the airflow into the air duct 210 is increased, allowing more air to flow through the heat exchanger for heat exchange. This increases the total airflow through the heat exchanger and improves the heat exchange efficiency of the heat exchanger, thereby enhancing the heat exchange efficiency and heat exchange capacity of the heat pump device 2000, and ultimately improving the performance of the heat pump device 2000.

[0072] Since the heat pump equipment 2000 adopts all the technical solutions of the fan assembly 1000 of the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be repeated here.

[0073] Of course, this utility model is not limited to the above-described embodiments. Those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of this utility model. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A fan assembly for use in a heat pump device with a heat exchanger, characterized in that, The fan assembly is arranged side by side with the heat exchanger, and the fan assembly includes: The housing has an internal cavity, an air outlet on its surface, and an opening on the side of the housing facing the heat exchanger, with the heat exchanger covering the opening. A volute is installed inside the inner cavity and connected to the outer shell. An air duct is formed inside the volute and communicates with the air outlet. The volute has air inlets on the side facing the heat exchanger and the side away from the heat exchanger, and the two air inlets are respectively connected to the air duct. A centrifugal fan is disposed in the air duct and located between the two air inlets. The centrifugal fan can draw air passing through the heat exchanger into the air duct through the two air inlets respectively. Wherein, at least a portion of the outer wall of the volute is spaced apart from the inner wall of the shell and defines an air intake channel, the air intake channel connecting the opening portion of the structure and the air inlet disposed opposite to the heat exchanger.

2. The wind turbine assembly according to claim 1, characterized in that, The volute is connected to the housing on opposite sides along its circumference. The air intake channel includes a first channel and a second channel. The first channel is formed between the top wall of the volute and the housing, and the second channel is formed between the bottom wall of the volute and the housing.

3. The wind turbine assembly according to claim 2, characterized in that, The volute includes a first sidewall and a second sidewall. The first sidewall faces the heat exchanger, and the second sidewall faces away from the heat exchanger. The first sidewall and the second sidewall are respectively provided with the air inlet. A third channel is defined between the second sidewall and the sidewall of the casing facing away from the heat exchanger. The third channel extends along the height direction of the casing and communicates with the first channel and the second channel respectively.

4. The wind turbine assembly according to claim 3, characterized in that, A plurality of connecting posts are provided between the second sidewall and the sidewall of the housing, and the plurality of connecting posts are spaced apart. One end of each connecting post is connected to the housing and the other end is connected to the volute.

5. The wind turbine assembly according to claim 3, characterized in that, The air outlet is located on the top wall of the housing. The volute includes an air outlet section and a volute chamber section. The air outlet section and the volute chamber section are arranged sequentially from top to bottom along the height direction of the housing and together form the air duct. The air outlet section is connected to the air outlet. The centrifugal impeller is located in the volute chamber section. The air outlet section has a third side wall and a fourth side wall arranged opposite to each other along a first direction. The third side wall is connected to the top wall of the volute chamber section through a volute tongue. There are two first channels. The third side wall, the top wall of the volute chamber section and the inner wall of the housing form one of the first channels. The fourth side wall and the inner wall of the housing form the other first channel.

6. The wind turbine assembly according to claim 5, characterized in that, The two ends of the volute section along the first direction are respectively connected to the side wall of the shell, and the bottom wall of the volute section is spaced apart from the bottom wall of the shell, forming the second channel.

7. The wind turbine assembly according to any one of claims 1 to 6, characterized in that, On the projection plane along the direction of the heat exchanger toward the housing, the projection of the heat exchanger overlaps the projection of the air intake passage.

8. The wind turbine assembly according to claim 1, characterized in that, The axial direction of the centrifugal impeller is consistent with the direction of the line connecting the two air inlets. The centrifugal impeller is provided with a partition, which divides the centrifugal impeller into two suction zones along the axial direction. The two suction zones are respectively connected to the two air inlets.

9. The wind turbine assembly according to claim 8, characterized in that, The volute has a first sidewall and a second sidewall. The first sidewall faces the heat exchanger, and the second sidewall faces away from the heat exchanger. The first sidewall and the second sidewall are respectively provided with air inlets. The air inlet of the second sidewall is a second air inlet. The sidewall of the casing facing away from the heat exchanger is provided with a mounting base. The mounting base protrudes towards the centrifugal impeller and passes through the second air inlet. The partition is provided with a clearance groove extending away from the mounting base. The fan assembly also includes a motor. The motor is installed on the mounting base and located in the clearance groove. The motor is connected to the centrifugal impeller.

10. The wind turbine assembly according to claim 9, characterized in that, The fan assembly also includes a fixing plate, which is a metal part. One end of the fixing plate is connected to the mounting base, and the other end is connected to the motor.

11. The wind turbine assembly according to claim 1, characterized in that, The fan assembly also includes two air guide rings, which are respectively disposed at the two air inlets. The air guide rings are arranged circumferentially along the air inlets and are fixedly connected to the volute. The cross-sectional area of ​​the air guide rings gradually decreases along the air inlet direction.

12. A heat pump device, characterized in that, It includes a heat exchanger and a fan assembly as described in any one of claims 1 to 11.

Images