Heat pump water heater and machine head assembly thereof

Abstract

The utility model discloses a heat-pump water heater and a machine head assembly thereof. The machine head assembly comprises a shell with a first air opening formed in the top wall and a second air opening formed in the peripheral wall; the supporting seat is arranged in the shell; the heat exchanger is arranged in the shell and is opposite to the second air opening, a first air passing area and a second air passing area are defined by the supporting base, the heat exchanger and the shell, the first air passing area communicates with the exterior of the shell through the second air opening, and the second air passing area communicates with the exterior of the shell through the first air opening; the first air passing area and the second air passing area are communicated through a heat exchanger; and the fan assembly is arranged at the first air opening in the second air passing area and is separated from the bottom wall of the second air passing area, a third air opening of the fan assembly is communicated with the second air passing area, and a fourth air opening of the fan assembly is communicated with the outside of the shell through the first air opening. According to the scheme, the compressor can be arranged on the bottom wall of the second air passing area below the fan assembly, so that the side, facing the first air passing area, of the heat exchanger is prevented from being shielded by the compressor.

Description

Technical Field

[0001] This application relates to, but is not limited to, the field of heat pump equipment technology, specifically to a heat pump water heater and its head assembly. Background Technology

[0002] A type of heat pump water heater, such as Figures 1 to 4 As shown, its head assembly includes a housing 10, a direct-flow heat exchanger 20, a fan assembly 30, a compressor 40, and an electrical control box. The heat exchanger 20 is erected on the bottom wall of the housing 10 and divides the interior of the housing 10 into an air inlet chamber 11 and an air outlet chamber 12. The compressor 40 and the electrical control box are located on the bottom wall of the air inlet chamber 11. The fan assembly 30 includes a motor, a centrifugal impeller, and a volute. The volute is located on the bottom wall of the air outlet chamber 12, and the centrifugal impeller is located inside the volute and connected to the motor. The air outlet 14 of the head assembly is located on the top wall of the housing 10, and the air inlet 13 of the head assembly is located on the top wall of the housing 10 (e.g., ...). Figure 1 and Figure 2 (as shown) or the peripheral wall of the housing 10 (such as Figure 3 and Figure 4 As shown, the inlet of the volute is opposite to the heat exchanger 20, and the outlet of the volute is connected to the air outlet 14. The motor drives the centrifugal impeller to rotate, and an air stream is formed inside the casing 10, flowing from the air inlet 13 through the air inlet chamber 11, the heat exchanger 20 and the volute to the air outlet 14.

[0003] Because the volute is located on the bottom wall of the air outlet cavity 12 and almost completely occupies the bottom wall of the air outlet cavity 12, the compressor 40 and the electrical control box cannot be located on the bottom wall of the air outlet cavity 12 and can only be located on the bottom wall of the air inlet cavity 11. As a result, the compressor 40 and the electrical control box significantly obstruct the air inlet side of the heat exchanger 20, which will reduce the heat exchange efficiency of the heat exchanger 20 and cause a decline in the performance of the heat pump water heater. Utility Model Content

[0004] This application provides a heat pump water heater head assembly, including: a housing with a first air vent on its top wall and a second air vent on its peripheral wall; a support base disposed within the housing; a heat exchanger disposed within the housing and opposite to the second air vent, the support base, the heat exchanger, and the housing forming a first air passage zone and a second air passage zone, the first air passage zone being connected to the outside of the housing through the second air vent, the second air passage zone being connected to the outside of the housing through the first air vent, and the first air passage zone and the second air passage zone being connected through the fin gaps of the heat exchanger; and a fan assembly disposed within the second air passage zone at the first air vent and spaced apart from the bottom wall of the second air passage zone, a third air vent of the fan assembly being connected to the second air passage zone, and a fourth air vent of the fan assembly being connected to the outside of the housing through the first air vent.

[0005] In some exemplary embodiments, the support includes: a seat ring located above the second air vent and sealingly engaged with at least the peripheral wall of the housing above the second air vent; and a support wall located below the seat ring on the side away from the second air vent, the heat exchanger located below the seat ring on the side adjacent to the second air vent, the support wall and the heat exchanger jointly supporting the seat ring on the bottom wall of the housing, and the upper end of the heat exchanger sealingly engaged with the seat ring, the two ends of the heat exchanger located circumferentially around the housing sealingly engaged with the support wall, and the support wall also sealingly engaged with the peripheral walls of the housing on both sides of the second air vent circumferentially around the housing; wherein, the first air passage area is located between the heat exchanger, the seat ring, the peripheral wall of the housing, the support wall and the bottom wall of the housing, and the second air passage area is located between the support wall, the heat exchanger, the seat ring, the bottom wall of the housing and the top wall of the housing.

[0006] In some exemplary embodiments, the support wall includes a first support rod, a support plate, and a second support rod. The support plate is located circumferentially between the first and second support rods of the housing. One end plate of the heat exchanger at one circumferential end of the heat exchanger is connected to the first support rod and the support plate. The other end plate of the heat exchanger at the other circumferential end of the heat exchanger is connected to the second support rod and the support plate. The first and second support rods are sealed to the circumferential wall of the housing on both sides of the second air outlet. The first air passage area is located between the heat exchanger, the seat ring, the circumferential wall of the housing, the first support rod, the second support rod, and the bottom wall of the housing. The second air passage area is located between the support plate, the heat exchanger, the seat ring, the bottom wall of the housing, and the top wall of the housing.

[0007] In some exemplary embodiments, the circumferential support plate of the housing is a bent structure, and a mounting cavity is formed on the side of the support plate facing away from the second air passage area inside the housing, and the upper part of the mounting cavity is connected to the upper part of the second air passage area.

[0008] In some exemplary embodiments, the support base further includes a first mounting platform and a second mounting platform, the first mounting platform and the second mounting platform being located on both sides of the second air vent and above the seat ring, and the first support rod and the second support rod being located on opposite sides of the first mounting platform and the second mounting platform.

[0009] In some exemplary embodiments, the heat exchanger has a bent structure, with the convex side of the heat exchanger facing the first air passage area and the concave side facing the second air passage area.

[0010] In some exemplary embodiments, the fan assembly includes: a volute having the third air outlet and the fourth air outlet, located in the second air passage area and disposed at the first air outlet; a fan wheel and a motor, the fan wheel being located inside the volute and disposed on the rotating shaft of the motor.

[0011] In some exemplary embodiments, the volute includes: a lower housing fixed to the support base, the motor fixed to the lower housing; and an upper housing fixed to the lower housing and forming the third air vent with the lower housing, the fourth air vent being located on the upper housing.

[0012] In some exemplary embodiments, the third air vent includes two vents, both of which are air inlets, and the fourth air vent includes one vent, which is an air outlet.

[0013] In some exemplary embodiments, the head assembly further includes a horizontal compressor disposed on the bottom wall of the second air passage zone below the fan assembly.

[0014] This application also provides a heat pump water heater, including the head assembly of the heat pump water heater described in any of the above embodiments.

[0015] The technical solution provided in this application embodiment is that the fan assembly is located in the second air passage zone at the first air outlet and spaced apart from the bottom wall of the second air passage zone. This allows the compressor to be located on the bottom wall of the second air passage zone below the fan assembly, and avoids positional interference between the compressor and the fan assembly. This prevents the compressor from blocking the side of the heat exchanger facing the first air passage zone. By setting the fan assembly to form an air jet that flows from the second air outlet through the first air passage zone, the heat exchanger, and the second air passage zone back to the first air outlet, the heat exchange efficiency of the heat exchanger is higher, and the performance of the fan head assembly is better.

[0016] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of this invention can be realized and obtained by means of the structures particularly pointed out in the description and the drawings. Attached Figure Description

[0017] The accompanying drawings are provided to further illustrate the technical solution of this utility model and constitute a part of the specification. They are used together with the embodiments of this application to explain the technical solution of this utility model and do not constitute a limitation on the technical solution of this utility model.

[0018] Figure 1 An exploded view of the nose assembly provided for some embodiments of the related technology;

[0019] Figure 2 for Figure 1 A cross-sectional view of the nose assembly shown.

[0020] Figure 3 An exploded view of the nose assembly provided for other embodiments of the related technology;

[0021] Figure 4 for Figure 3 A cross-sectional view of the nose assembly shown.

[0022] Figure 5 A partially exploded structural diagram of the nose assembly provided in some embodiments of this application;

[0023] Figure 6 for Figure 5 A schematic diagram showing the exploded structure of the central water tray, heat exchanger, and annular peripheral wall;

[0024] Figure 7 for Figure 5 Exploded view of the middle support base, lower shell, motor and impeller;

[0025] Figure 8 for Figure 5 The diagram shows a front view sectional view of the nose assembly.

[0026] Figure 9 for Figure 5 A schematic cross-sectional view of the left side of the nose assembly shown;

[0027] Figure 10 for Figure 8 The diagram shows the structure of the head assembly after removing the heat exchanger, annular peripheral wall, and cover.

[0028] Figure 11 for Figure 9 The diagram shows the structure of the head assembly after removing the heat exchanger, annular peripheral wall, and cover.

[0029] Figure 12 for Figure 8 The diagram shows a top view of the nose assembly.

[0030] The attached diagram lists the components represented by each number as follows:

[0031] 10 Housing, 11 Air inlet cavity, 12 Air outlet cavity, 13 Air inlet, 14 Air outlet, 20 Heat exchanger, 30 Fan assembly, 40 Compressor;

[0032] 110 Water receiving tray, 120 Annular peripheral wall, 121 Second air outlet, 130 Cover, 131 First air outlet, 140 First air passage zone, 150 Second air passage zone, 160 Mounting cavity, 161 Fifth air outlet, 200 Support base, 210 Seat ring, 220 First support rod, 230 Support plate, 240 Second support rod, 250 First mounting platform, 260 Second mounting platform, 300 Heat exchanger, 400 Fan assembly, 410 Lower housing, 420 Upper housing, 430 Impeller, 440 Motor, 500 Horizontal compressor. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features described in this application can be arbitrarily combined with each other.

[0034] The heat pump water heater head assembly provided in this application embodiment, such as... Figures 5 to 12 As shown, it includes: a shell, with a first air vent 131 on the top wall and a second air vent 121 on the peripheral wall; a support base 200 disposed inside the shell; and a heat exchanger 300 disposed inside the shell and opposite to the second air vent 121. The support base 200, the heat exchanger 300, and the shell together form a first air passage zone 140 and a second air passage zone 150. The first air passage zone 140 is connected to the outside of the shell through the second air vent 121, and the second air passage zone 150 is connected to the outside of the shell through the second air vent 121. The first air outlet 131 is connected to the outside of the casing. The first air passage zone 140 and the second air passage zone 150 are connected through the fin gaps of the heat exchanger 300. A fan assembly 400 is located within the second air passage zone 150 at the first air outlet 131 and is spaced from the bottom wall of the second air passage zone 150. The third air outlet of the fan assembly 400 is connected to the second air passage zone 150, and the fourth air outlet of the fan assembly 400 is connected to the outside of the casing through the first air outlet 131. When the fan assembly 400 operates, an airflow is formed inside the casing, flowing sequentially from the second air outlet 121 through the first air passage zone 140, the heat exchanger 300, and the second air passage zone 150 back to the first air outlet 131.

[0035] The fan assembly 400 is located within the second air passage zone 150 at the first air outlet 131 and is spaced apart from the bottom wall of the second air passage zone 150. When the fan assembly 400 is running, an airflow is formed inside the casing, flowing from the second air outlet 121 through the first air passage zone 140, the heat exchanger 300, and the second air passage zone 150 back to the first air outlet 131. This allows the compressor to be placed on the bottom wall of the second air passage zone 150 below the fan assembly 400, and avoids positional interference between the compressor and the fan assembly 400. This also prevents the compressor from blocking the side of the heat exchanger 300 facing the first air passage zone 140, resulting in higher heat exchange efficiency of the heat exchanger 300 and better performance of the fan head assembly.

[0036] In some embodiments, such as Figure 6 , Figures 8 to 11 As shown, the head assembly also includes a horizontal compressor 500, which is located on the bottom wall of the second air passage zone 150 below the fan assembly 400. The horizontal compressor 500 has a relatively small height, which satisfies the requirement of being located on the bottom wall of the second air passage zone 150 below the fan assembly 400 without interfering with the position of the fan assembly 400.

[0037] In some embodiments, such as Figure 6 As shown, the heat exchanger 300 has a bent structure, with its convex side facing the first air passage zone 140 and its concave side facing the second air passage zone 150. This results in a larger heat exchange area and better heat exchange effect for the heat exchanger 300. Alternatively, the heat exchanger 300 can be configured as a U-shaped, C-shaped, or V-shaped heat exchanger, etc., all of which can achieve the purpose of this application. Their intent does not depart from the design concept of this utility model, and will not be elaborated further here; all should fall within the protection scope of this application.

[0038] In some examples, such as Figures 7 to 12As shown, the support base 200 includes: a seat ring 210, which is located above the second air vent 121 and is in sealing fit with at least the peripheral wall of the shell above the second air vent 121; and a support wall, which is located below the seat ring 210 on the side away from the second air vent 121, and a heat exchanger 300 is located below the seat ring 210 on the side adjacent to the second air vent 121. The support wall and the heat exchanger 300 together support the seat ring 210 on the bottom wall of the shell, and the upper end of the heat exchanger 300 is in sealing fit with the seat ring 210 (which may be through a small gap or through a sealing sponge). The two ends of the heat exchanger 300 located in the circumferential direction of the shell are in sealing fit with the support wall, and the support wall is also in sealing fit with the peripheral walls of the shell on both sides of the second air vent 121 in the circumferential direction of the shell. The first airflow zone 140 is located between the heat exchanger 300, the seat ring 210, the peripheral wall of the shell, the support wall, and the bottom wall of the shell. The second airflow zone 150 is located between the support wall, the heat exchanger 300, the seat ring 210, the bottom wall of the shell, and the top wall of the shell. This design allows all the airflow within the first airflow zone 140 to flow from the fin gaps of the heat exchanger 300 to the second airflow zone 150, resulting in higher heat exchange efficiency and better heat exchange effect for the heat exchanger 300.

[0039] Furthermore, such as Figures 7 to 12 As shown, the support wall includes an erected first support rod 220, an erected support plate 230, and an erected second support rod 240. The circumferential support plate 230 of the shell is located between the first support rod 220 and the second support rod 240. The end plate of the heat exchanger 300 located at one end of the shell circumferentially is connected to the end of the first support rod 220 and the support plate 230 adjacent to the first support rod 220. The end plate of the heat exchanger 300 located at the other end of the shell circumferentially is connected to the end of the second support rod 240 and the support plate 230 adjacent to the second support rod 240. The first support rod 220 and the second support rod 240 are sealed to the circumferential wall of the shell on both sides of the second air vent 121. Specifically: the first airflow zone 140 is located on the side of the heat exchanger 300 facing away from the support plate 230, and lies between the heat exchanger 300, the seat ring 210, the peripheral wall of the shell, the first support rod 220, the second support rod 240, and the bottom wall of the shell; the second airflow zone 150 is located on the side of the heat exchanger 300 facing the support plate 230, and lies between the support plate 230, the heat exchanger 300, the seat ring 210, the bottom wall of the shell, and the top wall of the shell. This design allows all the airflow within the first airflow zone 140 to flow from the fin gaps of the heat exchanger 300 to the second airflow zone 150, resulting in higher heat exchange efficiency and better heat exchange effect for the heat exchanger 300.

[0040] Furthermore, such as Figure 7 , Figure 8 , Figure 10 and Figure 12As shown, the support base 200 also includes a first mounting platform 250 and a second mounting platform 260. The first mounting platform 250 and the second mounting platform 260 are located on both sides of the second air outlet 121 in the circumferential direction of the housing. The first mounting platform 250 and the second mounting platform 260 are also located above the seat ring 210. The first support rod 220 and the second support rod 240 are located on opposite sides of the first mounting platform 250 and the second mounting platform 260. The top surface of the first mounting platform 250, the top surface of the second mounting platform 260 and the top surface of the first support rod 220 are all sealed with the top wall of the housing, so that the upper part of the first air passage zone 140 is in a sealed state and is not connected to the upper part of the second air passage zone 150.

[0041] It can be, such as Figures 7 to 12 As shown, the support base 200 is an integral structure; or it can be a split structure, etc.; all of the above can achieve the purpose of this application, and their purpose has not deviated from the design concept of this utility model. They will not be described in detail here, and all should fall within the protection scope of this application.

[0042] In some embodiments, such as Figure 7 , Figure 9 and Figure 11 As shown, the circumferential support plate 230 of the housing has a bent structure. A mounting cavity 160 is formed on the side of the support plate 230 facing away from the second airflow zone 150. The upper part of the mounting cavity 160 is connected to the upper part of the second airflow zone 150. The head assembly also includes an electrical control box, which is located within the mounting cavity 160. Under the action of the airflow in the second airflow zone 150, a negative pressure zone is formed in the upper part of the mounting cavity 160. This negative pressure zone draws air from the interior of the mounting cavity 160, thereby cooling the electrical control box. The mounting cavity 160 is connected to the outside of the housing through a fifth air vent 161.

[0043] Alternatively, the electrical control box can be placed within the second air passage zone 150 and positioned on the side of the horizontal compressor 500 opposite to the heat exchanger 300, which can also achieve the purpose of this application. Its purpose has not deviated from the design concept of this utility model, and will not be elaborated here. It should also fall within the protection scope of this application.

[0044] In some examples, such as Figure 5 , Figures 7 to 12 As shown, the fan assembly 400 includes: a volute having a third air outlet and a fourth air outlet, the volute being located in the second air passage zone 150 and disposed at the first air outlet 131; an impeller 430 and a motor 440, the motor 440 being fixed at the third air outlet, and the impeller 430 being located inside the volute and disposed on the rotating shaft of the motor 440. The motor 440 drives the impeller 430 to rotate, and an airflow from the third air outlet to the fourth air outlet is formed inside the volute.

[0045] In some embodiments, such as Figure 5 , Figures 7 to 12 As shown, the volute includes: a lower housing 410, which is located between the first mounting platform 250 and the second mounting platform 260 and fixed from top to bottom on the first mounting platform 250 and the second mounting platform 260, and a motor 440 is fixed to the lower housing 410; and an upper housing 420, which is fixed from top to bottom to the lower housing 410 and together with the lower housing 410 forms a third air inlet and a volute air duct. A fourth air inlet is located at the top of the upper housing 420, and a fan wheel 430 is located inside the volute air duct. Specifically: there are two third air inlets, both of which are air inlets, and the motor 440 is fixed inside one of the third air inlets; there is one fourth air inlet, which is an air outlet, and the two third air inlets are connected to the fourth air inlet through the volute air duct; the first air inlet 131 is an air outlet; and the second air inlet 121 is an air inlet.

[0046] In some examples, such as Figure 5 , Figure 6 , Figures 8 to 12 As shown, the housing includes a water receiving tray 110, an annular peripheral wall 120, and a cover 130. The annular peripheral wall 120 is disposed on the water receiving tray 110, and the cover 130 is fitted over the upper part of the annular peripheral wall 120. The water receiving tray 110 includes the bottom wall of the housing. The cover 130 includes the top wall of the housing, and a first air vent 131 is located on the cover 130. The annular peripheral wall 120 includes the peripheral wall of the housing, and a second air vent 121 is located on the annular peripheral wall 120.

[0047] When the motor 440 (or impeller 430) malfunctions, first remove the cover 130 (or both the cover 130 and the annular circumferential wall 120 can be removed), then remove the upper housing 420, and then remove the motor 440 and impeller 430 together from the lower housing 410 upwards. This will allow you to repair or replace the motor 440 (or impeller 430).

[0048] When a component (such as a compressor) fixed on the water tray 110 in the second air passage zone 150 malfunctions, first remove the cover 130 (or both the cover 130 and the annular peripheral wall 120 can be removed), and then disassemble the fan assembly 400 as a whole. This will allow the malfunctioning component fixed on the water tray 110 in the second air passage zone 150 to be repaired or replaced.

[0049] The heat pump water heater provided in this application embodiment (not shown in the figure) includes the head assembly of the heat pump water heater described in any of the above embodiments.

[0050] This heat pump water heater possesses all the advantages of the head assembly of the heat pump water heater provided in any of the above embodiments, which will not be repeated here.

[0051] In summary, in the technical solution provided by the embodiment of the present application, the fan assembly is disposed at the first air outlet in the second air passage area and is spaced apart from the bottom wall of the second air passage area. In this way, the compressor can be disposed on the bottom wall of the second air passage area below the fan assembly, and position interference between the compressor and the fan assembly can be avoided, thereby preventing the compressor from blocking the side of the heat exchanger facing the first air passage area. By arranging the fan assembly to form an air beam flowing from the second air outlet through the first air passage area, the heat exchanger, and the second air passage area to the first air outlet in sequence, the heat exchange efficiency of the heat exchanger is higher and the performance of the machine head assembly is better.

[0052] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by terms such as "upper", "lower", "one side", "the other side", "one end", "the other end", "side", "opposite", "four corners", "perimeter", and "the structure of the character 'kou'" is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the structure referred to has a specific orientation, is constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model.

[0053] In the description of the embodiments of the present utility model, unless otherwise clearly specified and limited, the terms "connected", "directly connected", "indirectly connected", "fixedly connected", "installed", and "assembled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; the terms "installed", "connected", and "fixedly connected" can be directly connected or indirectly connected through an intermediate medium, and can be the internal connection of two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0054] Although the disclosed embodiments of the present utility model are as above, the content described is only the embodiments adopted for the convenience of understanding the present utility model and is not used to limit the present utility model. Any person skilled in the art within the scope of the present utility model can make any modifications and changes in the form and details of the implementation without departing from the spirit and scope disclosed by the present utility model. However, the scope of patent protection of the present utility model shall still be defined by the appended claims.

Claims

1. A heat pump water heater head assembly, characterized in that, include: The casing has a first air vent on its top wall and a second air vent on its peripheral wall; A support base is disposed within the housing; A heat exchanger is disposed within the housing and opposite to the second air outlet. The support base, the heat exchanger, and the housing together form a first air passage zone and a second air passage zone. The first air passage zone is connected to the outside of the housing through the second air outlet, and the second air passage zone is connected to the outside of the housing through the first air outlet. The first air passage zone and the second air passage zone are connected through the fin gaps of the heat exchanger. A fan assembly is located at the first air outlet within the second air passage zone and is spaced apart from the bottom wall of the second air passage zone. The third air outlet of the fan assembly is connected to the second air passage zone, and the fourth air outlet of the fan assembly is connected to the outside of the housing through the first air outlet.

2. The head assembly according to claim 1, characterized in that, The support base includes: A seat ring, located above the second air vent, and at least sealingly fitted with the peripheral wall of the housing above the second air vent; and A support wall is located below the seat ring on the side away from the second air outlet, and the heat exchanger is located below the seat ring on the side near the second air outlet. The support wall and the heat exchanger together support the seat ring on the bottom wall of the housing, and the upper end of the heat exchanger is sealed to the seat ring. The two ends of the heat exchanger located on the circumference of the housing are sealed to the support wall. The support wall is also sealed to the circumferential walls of the housing on both sides of the second air outlet. The first air passage zone is located between the heat exchanger, the seat ring, the peripheral wall of the shell, the support wall, and the bottom wall of the shell, while the second air passage zone is located between the support wall, the heat exchanger, the seat ring, the bottom wall of the shell, and the top wall of the shell.

3. The head assembly according to claim 2, characterized in that, The support wall includes a first support rod, a support plate, and a second support rod. The support plate is located between the first support rod and the second support rod in the circumferential direction of the shell. The end plate of the heat exchanger at one end in the circumferential direction of the shell is connected to the first support rod and the support plate. The end plate of the heat exchanger at the other end in the circumferential direction of the shell is connected to the second support rod and the support plate. The first support rod and the second support rod are sealed to the circumferential wall of the shell on both sides of the second air outlet. The first air passage zone is located between the heat exchanger, the seat ring, the peripheral wall of the shell, the first support rod, the second support rod, and the bottom wall of the shell, while the second air passage zone is located between the support plate, the heat exchanger, the seat ring, the bottom wall of the shell, and the top wall of the shell.

4. The head assembly according to claim 3, characterized in that, The circumferential support plate of the housing has a bent structure, and an installation cavity is formed on the side of the support plate facing away from the second air passage area inside the housing. The upper part of the installation cavity is connected to the upper part of the second air passage area.

5. The head assembly according to claim 3, characterized in that, The support base also includes a first mounting platform and a second mounting platform, which are located on both sides of the second air vent and above the seat ring, and the first support rod and the second support rod are located on opposite sides of the first mounting platform and the second mounting platform.

6. The head assembly according to any one of claims 1 to 5, characterized in that, The heat exchanger has a bent structure, with the convex side facing the first air passage area and the concave side facing the second air passage area.

7. The head assembly according to any one of claims 1 to 5, characterized in that, The wind turbine assembly includes: The volute having the third air inlet and the fourth air inlet is located in the second air passage area and is disposed at the first air inlet; A wind turbine and a motor, wherein the wind turbine is located inside the volute and is mounted on the rotating shaft of the motor.

8. The head assembly according to claim 7, characterized in that, The volute includes: The lower housing is fixed to the support base, and the motor is fixed to the lower housing; and The upper housing is fixed to the lower housing and together with the lower housing forms the third air vent, and the fourth air vent is located on the upper housing; The third air vent includes two air inlets, and the fourth air vent includes one air outlet.

9. The head assembly according to any one of claims 1 to 5, characterized in that, Also includes: A horizontal compressor is located on the bottom wall of the second air passage zone below the fan assembly.

10. A heat pump water heater, characterized in that, Includes the head assembly of a heat pump water heater as described in any one of claims 1 to 9.

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