Heat pump water heater

Abstract

A heat pump water heater (100), comprising a water tank assembly (1) and a heat pump device (2). The water tank assembly (1) comprises a first housing (11), a water tank body (12), and a condenser. The water tank body (12) and the condenser are disposed in the first housing (11), and the condenser is configured to release heat to heat water in a water tank body (12). The heat pump device (2) comprises a compressor (22), an evaporator (23), a fan assembly (25), an electric control box (26), a throttling assembly (24), and a base (28). The base (28) is disposed at the top of the water tank assembly (1), and the base (28) comprises a base body (280) and a plurality of hoisting structures (29). The plurality of hoisting structures (29) are arranged at intervals in the circumferential direction of the base body (280).

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of household electrical appliances, in particular to a heat pump water heater.BACKGROUND

[0002] The heat pump water heater can introduce cold water from the water inlet into the water tank, and heat the cold water into hot water using a heat pump device, and then allow the hot water to flow out through a water outlet for use by users.SUMMARY OF THE INVENTION

[0003] Accordingly, the present disclosure provides a heat pump water heater, in accordance with claims which follow.

[0004] Provided is a heat pump water heater including a water tank assembly and a heat pump device. The water tank assembly includes a first housing, a water tank body and a condenser. The water tank body is disposed in the first housing, and the water tank body has a water inlet and a water outlet. The condenser is disposed in the first housing and configured to release heat to heat water in the water tank body. The heat pump device is positioned on top of the water tank assembly, and the heat pump device includes a compressor, an evaporator, a fan assembly, a throttling assembly and an electric control box. The compressor has an inlet port and an exhaust port, and the exhaust port is connected to the condenser. The evaporator is connected to the inlet port and configured to absorb heat in air. The fan assembly is positioned on one side of the evaporator and configured to guide outside air to the evaporator The throttling assembly is disposed between the evaporator and the condenser, and the compressor, the condenser, the throttling assembly and the evaporator are connected in sequence to form a refrigerant circulation loop. An electric control box is provided, and the electric control box is coupled with the compressor, the fan assembly, and the throttling assembly. The heat pump device further comprises a base arranged at the top of the water tank assembly, and the compressor, the evaporator, the fan assembly, the electric control box and the throttling assembly are respectively arranged at a side of the base away from the water tank body. The base comprises a base body and a plurality of hoisting structures. The plurality of hoisting structures are arranged at intervals in a circumferential direction of the base body, so that the base is mounted to the top of the water tank assembly by the hoisting structures.BRIEF DESCRIPTION OF DRAWINGS

[0005] FIG. 1 is a structural diagram of a heat pump water heater according to some embodiments. FIG. 2 is an exploded view of a partial structure of a heat pump water heater according to some embodiments. FIG. 3 is a structural diagram of a heat pump device and a water tank assembly according to some embodiments. FIG. 4 is a partial enlarged view at circle P in FIG. 3. FIG. 5A is a partial sectional view of a heat pump device and a water tank assembly according to some embodiments. FIG. 5B is a partial enlarged view at circle Q in FIG. 5A. FIG. 6 is a top view of a heat pump device and a water tank assembly according to some embodiments. FIG. 7A is a partial structural diagram of a heat pump device according to some embodiments. FIG. 7B is a structural diagram of a base according to some embodiments. FIG. 8 is a sectional view of a heat pump water heater according to some embodiments. FIG. 9 is a partial sectional view of a heat pump water heater according to some embodiments. FIG. 10 is a structural view of another angle of the heat pump water heater of FIG. 3. FIG. 11 is a structural view of a first sub-housing of a heat pump water heater according to some embodiments. FIG. 12 is a partial enlarged view at circle A1 in FIG. 11. FIG. 13 is a partial enlarged view at circle B in FIG. 11. FIG. 14 is a structural view of a second sub-housing according to some embodiments. FIG. 15 is a partial enlarged view at circle C1 in FIG. 14. FIG. 16 is a partial enlarged view at circle D in FIG. 14. FIG. 17 is a structural view of a mounting plate according to some embodiments. FIG. 18 is another structural view of a first sub-housing of a heat pump water heater according to some embodiments. FIG. 19 is a partial enlarged view at circle A2 in FIG. 18. FIG. 20 is another structural view of a second sub-housing of a heat pump water heater according to some embodiments. FIG. 21 is a partial enlarged view at circle C2 in FIG. 20. FIG. 22 is a sectional view of a housing and a top cover of a heat pump water heater according to some embodiments. FIG. 23 is a partial enlarged view at circle E in FIG. 22. FIG. 24 is a partial enlarged view at circle F in FIG. 22. FIG. 25 is an exploded view of a heat pump water heater according to some embodiments. FIG. 26 is a structural view of a fan assembly and an evaporator according to some embodiments. FIG. 27 is a partial enlarged view at circle G in FIG. 26. FIG. 28 is a front view of a fan assembly and an evaporator according to some embodiments. FIG. 29 is a side view of a fan assembly and an evaporator according to some embodiments. FIG. 30 is a top view of the fan assembly and evaporator of FIG. 29. FIG. 31 is another front view of a fan assembly and an evaporator according to some embodiments. FIG. 32 is a top view of a heat pump water heater according to some embodiments. FIG. 33 is a partial structural view of a heat pump device according to some embodiments. FIG. 34 is another side view of a fan assembly and an evaporator according to some embodiments. FIG. 35 is a structural view of a filter screen assembly according to some embodiments. FIG. 36 is a structural view of a filter screen assembly and a second housing according to some embodiments. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0006] Hereinafter, some embodiments of the present disclosure will be clearly and completely described with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present disclosure, but not all embodiments. Based on the embodiments provided by the present disclosure, all other embodiments obtained by those ordinarily skilled in the art fall within the scope of protection of the present disclosure.

[0007] Unless the context requires otherwise, throughout the description and claims, the term "comprise" and other forms thereof, such as the third-person singular form "comprises" and the present participle form "comprising" are construed in an open, inclusive meaning, that is, "comprising, but not limited to." In the description, the terms "one embodiment," "some embodiments," "exemplary embodiments," "example," "specific example," or "some examples," etc. are intended to indicate that a particular feature, structure, material, or characteristic related to the embodiment or example is included in at least one embodiment or example of the present disclosure. The schematic illustration of the above terms does not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be included in any one or more embodiments or examples in any suitable manner.

[0008] Hereinafter, the terms "first" and "second" are for descriptive purposes only, and are not to be understood as indicating or implying relative importance or as implicitly indicating the number of technical features indicated. Thus, the use of terms like "first" and "second" to describe features can explicitly or implicitly encompass one or more of such features. In the description of embodiments of the present disclosure, unless otherwise specified, "a plurality" means two or more.

[0009] In describing some embodiments, the expressions "coupled" and "connected" and extensions thereof may be used. The term "connected" is to be understood in a broad sense, for example, "connected" may refer to a fixed connection, may also refer to a detachable connection, or an integral connection; and it may refer to a direct connection or an indirect connected through an intermediate medium. The term "coupled" indicates that two or more components are in direct physical or electrical contact. The term "coupled" or "communicatively coupled" may also indicate that two or more components are not in direct contact with each other, but still cooperate or interact with each other. The embodiments disclosed herein are not necessarily limited to the contents herein.

[0010] "At least one of A, B, and C" has the same meaning as "at least one of A, B, or C", encompassing the following combinations of A, B, and C: only A, only B, only C, a combination of A and B, a combination of A and C, a combination of B and C, as well as a combination of A, B, and C.

[0011] "A and / or B" includes three combinations of only A, only B, and a combination of A and B.

[0012] The use of "suitable for" or "configured to" herein means open and inclusive language that does not exclude devices suitable for or configured to perform additional tasks or steps.

[0013] As used herein, "about," "approximately," or "approximately" includes a stated value as well as an average within an acceptable range of deviation from a particular value, where the acceptable range of deviation is determined by one of ordinary skill in the art taking into account the measurement in question and the error associated with the measurement of a particular amount (i.e., limitations of the measurement system).

[0014] As used herein, terms such as "parallel," "perpendicular," and "equal" encompass both the stated conditions and conditions that are approximate to the stated ones, with the range of approximation falling within an acceptable deviation, where the acceptable range of deviation is as determined by a person of ordinary skill in the art taking into account the measurement in question and the error associated with the measurement of a particular quantity (i.e., limitations of the measurement system). For example, "parallel" encompasses both absolute parallelism and approximate parallelism, where the acceptable deviation range for approximate parallelism can be, for instance, within 5° of deviation, similarly, "perpendicular" includes both absolute perpendicularity and approximate perpendicularity, with an acceptable deviation range for approximate perpendicularity that can also be, for example, within 5° of deviation. "Equal" encompasses both absolute equality and approximate equality, where the acceptable deviation range for approximate equality can be, for example, a difference between the two quantities being compared that is less than or equal to 5% of either quantity.

[0015] Heat pump water heater is a new type of water heater after electric water heater, gas water heater and solar water heater. Heat pump water heaters heat the water in the tank by absorbing heat from the air. In this way, they avoid the problems of electric water heater leakage, dry burning and possible gas poisoning when the gas water heater is used, and overcomes the shortcomings of the solar water heaters, which are greatly affected by the weather conditions. Heat pump water heaters offer advantages such as high efficiency, energy saving, safety, environmental protection, all-weather operation, and ease of use.

[0016] As shown in FIG. 1, the heat pump water heater 100 includes a water tank assembly 1 and a heat pump device 2. As shown in FIGS. 1 and 8, the water tank assembly 1 includes a first housing 11, a water tank body 12, and a condenser. The water tank body 12 is disposed in the first housing 11 and is configured to store water. The water tank body 12 includes a water inlet 121 and a water outlet 122. For example, the water inlet 121 and the water outlet 122 may be provided at both ends of the water tank body 12 in an axial direction. The water inlet 121 is configured to connect an external pipe so that cold water can flow into the water tank body 12 through the water inlet 121, and the hot water can flow out of the water tank body 12 through the water outlet 122 for user use after the cold water is heated.

[0017] In some embodiments, the condenser is disposed in the first housing 11, and the condenser may be a heat conductor of a hollow tubular structure. For example, the condenser is a copper tube and is wound around the outside of the water tank body 12.

[0018] As shown in FIGS. 1 to 3, the heat pump device 2 is located at top of the water tank assembly 1. The heat pump device 2 includes a second housing 21, and a compressor 22 and an evaporator 23 accommodated in the second housing 21. The evaporator 23 is configured to absorb heat in the air. The compressor 22 has an inlet port and an exhaust port, the exhaust port of the compressor 22 is connected to one end of the condenser, and the inlet port of the compressor 22 is connected to one end of the evaporator 23.

[0019] In some embodiments, the heat pump device 2 further includes a throttling assembly 24. The throttling assembly 24 is connected between an another end of the evaporator 23 and an another end of the condenser. The compressor 22, the condenser, the throttling assembly 24, and the evaporator 23 are sequentially connected to form a refrigerant circulation loop. The refrigerant may flow in the refrigerant circulation loop, thereby enabling heat exchange between the condenser and the water tank body 12 to heat the water in the water tank body 12.

[0020] In some embodiments, the heat pump device 2 further includes a fan assembly 25. The fan assembly 25 is provided on one side of the evaporator 23, and is configured to guide outside air to the evaporator 23. After absorbing heat inside the evaporator 23, the refrigerant returns to the compressor 22 to be compressed again, and this process repeats in a continuous cycle, so that thermal energy from the air is continuously transferred to the water, raising the temperature of the water within the water tank body 12.

[0021] In some embodiments, the heat pump device 2 further includes an electric control box 26. The electric control box 26 is coupled to the compressor 22, the evaporator 23, and the fan assembly 25. The electric control box 26 and the compressor 22 are located on the same side of the evaporator 23 and are opposite to the fan assembly 25. The electric control box 26 is configured to control the normal operation of the heat pump water heater 100. As shown in FIG. 3, the fan assembly 25 and the compressor 22 are located on both sides of the evaporator 23 in the thickness direction (the left-right direction as shown in FIG. 8), respectively.

[0022] When the heat pump water heater 100 is operating, the fan assembly 25 operates. Under the action of the fan assembly 25, a large amount of air flows across the outer surface of the evaporator 23. The heat in the air is absorbed by the evaporator 23, and the temperature of the air decreases to become cold air. The cold air is then discharged from the fan assembly 25.

[0023] In this process, the refrigerant inside the evaporator 23 absorbs heat and vaporizes, and then is sucked into the compressor 22. The compressor 22 compresses the returned low-pressure refrigerant gas into a high-temperature and high-pressure gas, and transfers the refrigerant gas into a condenser wrapped around the outer side wall of the water tank body 12. The heat generated by the high-temperature and high-pressure gas is transferred to the inside of the water tank body 12 by heat conduction through the condenser to heat the water in the water tank body 12.

[0024] The refrigerant in the condenser is cooled to a liquid under the continuous action of pressure, which is throttled and cooled by the throttling assembly 24 (such as an expansion valve) and then flows into the evaporator 23 again. Since the pressure in the evaporator 23 suddenly decreases, the liquid refrigerant rapidly evaporates into a gaseous state at the evaporator 23 and absorbs a large amount of heat. In this repeated cycle, the thermal energy from the air is continuously transferred to the water, causing the water temperature in the water tank body 12 to rise.

[0025] Typically, when installing a heat pump water heater, the heat pump device 2 is assembled first, and then the heat pump device 2 is assembled with the water tank assembly 1. However, due to the heavy weight of the compressor 22, the evaporator 23, and the like, it is difficult to install the heat pump water heater manually, resulting in low production efficiency and high production cost, and there is a potential safety hazard in the installation process of the heat pump device 2 and the water tank assembly 1.

[0026] In order to solve the above problems, as shown in FIGS. 1 to 4, the present disclosure proposes a heat pump water heater 100. The heat pump device 2 of the heat pump water heater 100 further includes a base 28, and the base 28 is provided on the top of the water tank assembly 1. The compressor 22, the evaporator 23, the throttling assembly 24, the fan assembly 25, and the electric control box 26 are provided on the side (e.g., the upper side) of the base 28 away from the water tank assembly 1. The base 28 includes a base body 280 and a plurality of hoisting structures 29, and the plurality of hoisting structures 29 are arranged at intervals in a circumferential direction of the base body 280.

[0027] According to the heat pump water heater 100 of some embodiments of the present disclosure, the hoisting structures 29 are provided on the base body 280 so that after the heat pump device 2 is assembled, the heat pump device 2 is lifted at the plurality of hoisting structures 29 by external equipment (such as a crane, etc.), thereby realizing the assembly between the heat pump device 2 and the water tank assembly 1. The installation of the plurality of hoisting structures 29 can make installation convenient and labor-saving, thereby improving the production efficiency of the heat pump water heater 100 and reducing the production cost of the heat pump water heater 100.

[0028] In some embodiments, as shown in FIGS. 3 and 4, the base body 280 includes a bottom wall 281 and a side wall 282, and the side wall 282 is connected to the outer periphery of the bottom wall 281. The hoisting structure 29 comprises at least one connecting wall 291, and the connecting wall 291 is connected to the bottom wall 281, and the two ends of the connecting wall 291 are spaced apart from each other and connected to the side wall 282, respectively. For example, the bottom end of the connecting wall 291 is connected to the bottom wall 281, and the connecting wall 291 may be disposed on a side of the side wall 282 of the base body 280 that is adjacent to the center of the base body 280.

[0029] In this way, both ends of the connecting wall 291 are connected to the side wall 282, and the connecting wall 291 and the side wall 282 are provided in the radial direction of the heat pump water heater 100, so that the hoisting structure 29 can define a space for accommodating a lifting rope, a hook, or the like. For example, one end of the lifting rope is connected to the hoisting structure 29 and the other end of the lifting rope is connected to external equipment, such as a crane.

[0030] As a result, the connecting wall 291 is connected to the bottom wall 281 along one end in the up-down direction of the heat pump water heater 100, and is connected to the side wall 282 at both ends in the direction perpendicular to the radius of the bottom wall 281, thereby increasing the structural strength of the side wall 282 corresponding to the hoisting structure 29, preventing the heat pump device 2 from falling off during hoisting, and thereby increasing reliability during hoisting.

[0031] In some embodiments, as shown in FIG. 4, the connecting wall 291 includes a first sub-connecting wall 2911, a second sub-connecting wall 2912, and a third sub-connecting wall 2913. The first sub-connecting wall 2911 and the third sub-connecting wall 2913 are spaced apart from each other, one end of the first sub-connecting wall 2911 and one end of the third sub-connecting wall 2913 are respectively connected to the side wall 282, and the second sub-connecting wall 2912 is connected between an another end of the first sub-connecting wall 2911 and an another end of the third sub-connecting wall 2913.

[0032] Accordingly, the arrangement of the first sub-connecting wall 2911, the second sub-connecting wall 2912, and the third sub-connecting wall 2913 can disperse the transmission direction of the stress received inside the connecting wall 291, reduce the possibility that the portion of the base body 280 corresponding to the hoisting structure 29 is deformed by force, and further increase the structural strength of the hoisting structure 29.

[0033] In some embodiments, as shown in FIGS. 4 and 6, a distance between the first sub-connecting wall 2911 and the third sub-connecting wall 2913 tends to decrease in a direction from the side wall 282 toward a center of the bottom wall 281. That is, the first sub-connecting wall 2911 and the third sub-connecting wall 2913 are close to each other in a direction toward the center of the bottom wall 281. For example, in the vertical direction of the heat pump water heater 100, the cross-sections of the first sub-connecting wall 2911, the second sub-connecting wall 2912, the third sub-connecting wall 2913, and a part of the side wall 282 connected to the connecting wall 291 are trapezoidal.

[0034] In this way, it is possible to reduce the space occupied by the hoisting structure 29 on the base body 280. Furthermore, it is possible to ensure that the ends of the first sub-connecting wall 2911 and the third sub-connecting wall 2913 that are away from the second sub-connecting wall 2912 form a large space with the side wall 282, thereby preventing the first sub-connecting wall 2911 and the third sub-connecting wall 2913 from interfering with the hoisting process, and facilitating the use of the hoisting structure 29.

[0035] In some embodiments, as shown in FIGS. 4-5B, the hoisting structure 29 further includes a connecting hole 2821. The connecting hole 2821 is provided on the inner bottom surface of the bottom wall 281, and the connecting hole 2821 is provided opposite to the connecting wall 291. For example, the connecting hole 2821 is provided at the connection between the bottom wall 281 and the side wall 282 of the base body 280, one end of the lifting rope may pass through the corresponding connecting hole 2821 to be connected at the hoisting structure 29, while the other end of the lifting rope is connected to an external equipment, and the external equipment uses the lifting rope to lift the heat pump device 2 and place the heat pump device 2 on the top of the water tank assembly 1.

[0036] It can be understood that the structural strength of the side wall 282 and the bottom wall 281 corresponding to the hoisting structure 29 is reduced due to the arrangement of the connecting hole 2821, and by arranging the connecting wall 291, the structural strength around the connecting hole 2821 can be increased to avoid deformation or fracture at the connecting hole 2821. In addition, the connecting hole 2821 also facilitates the installation of the lifting rope.

[0037] In some embodiments, as shown in FIG. 5B, the width of the connecting hole 2821 increases from top to bottom. That is, the opening on the side of the connecting hole 2821 adjacent to the bottom wall 281 is large. The connecting hole 2821 has an inclined inner wall. When the hoisting structure 29 and the external equipment are connected using the lifting rope, the lifting rope may pass through the connecting hole 2821 and move along the inner wall of the connecting hole 2821 to the top of the connecting hole 2821 to tightly fit the connecting hole 2821.

[0038] As a result, the width of the connecting hole 2821 is increased from the top to the bottom, and it is convenient to fit the lifting rope with the connecting hole 2821, so as to improve the hoisting efficiency.

[0039] In some embodiments, as shown in FIGS. 7A and 7B, the hoisting structure 29 includes a connecting plate 292. The connecting plate 292 includes a first sub-connecting plate 2921, a second sub-connecting plate 2922, a third sub-connecting plate 2923, and a fourth sub-connecting plate 2924 connected in sequence. The first sub-connecting plate 2921 to the fourth sub-connecting plate 2924 are located on the side of the side wall 282 close to the center of the base body 280, and are connected to the bottom wall 281 of the base body 280. The first sub-connecting plate 2921 is connected to the side wall 282 and is disposed opposite to the third sub-connecting plate 2923, and the second sub-connecting plate 2922 is disposed opposite to the fourth sub-connecting plate 2924.

[0040] The first sub-connecting plate 2921 has a first through-hole 2821A, and the third sub-connecting plate 2923 has a second through-hole 2821B, and the first through-hole 2821A communicates with the second through-hole 2821B to form the connecting hole 2821. The hoisting structure 29 protrudes integrally from the edge of the side wall 282 of the base 28 to facilitate the mounting of the lifting rope through the connecting hole 2821.

[0041] The hoisting structure 29 further includes a first reinforcing rib 293 and a second reinforcing rib 294. Both ends of the first reinforcing rib 293 are respectively connected to the first sub-connecting plate 2921 and the third sub-connecting plate 2923, and both ends of the second reinforcing rib 294 are respectively connected to the second sub-connecting plate 2922 and the fourth sub-connecting plate 2924 to further strengthen the strength of the hoisting structure 29.

[0042] In some embodiments, as shown in FIGS. 2 and 8, the water tank assembly 1 includes a mounting plate 13. For example, the mounting plate 13 is provided on the top of the first housing 11 to facilitate mounting of the heat pump device 2. A first accommodating cavity 10 is defined between the mounting plate 13 and the first housing 11, and the water tank body 12 is located in the first accommodating cavity 10. The base 28 is provided on the side of the mounting plate 13 away from the water tank assembly 1. The base 28 is connected to the mounting plate 13 to complete the assembly of the heat pump device 2 and the water tank assembly 1. Accordingly, the installation efficiency can be improved, and the supporting effect of the water tank assembly 1 on the heat pump device 2 can be improved.

[0043] In some embodiments, one of the mounting plate 13 and the base 28 is provided with at least one positioning groove 2822, and the other of the mounting plate 13 and the base 28 is provided with at least one positioning member 135. The positioning member 135 fits in the positioning groove 2822 to connect the base 28 and the mounting plate 13.

[0044] As shown in FIG. 2, the base 28 is provided with the positioning groove 2822, and the mounting plate 13 is provided with the positioning member 135. After the base 28 is assembled with the mounting plate 13, the positioning member 135 fits with the positioning groove 2822. The positioning member 135 is configured to restrict rotation of the base 28 in the circumferential direction of the heat pump water heater 100.

[0045] Therefore, the fitting of the positioning member 135 and the positioning groove 2822 facilitates the assembly of the mounting plate 13 and the base 28, and limits the base 28, which is beneficial to increasing the stability of the base 28 after installation.

[0046] In some embodiments, an orthographic projection of the base body 280 on the horizontal plane lies within an orthographic projection of the mounting plate 13 on the horizontal plane. As shown in FIGS. 5B and 6, at least part of the side wall 282 of the base body 280 is located radially inward of mounting plate 13 and is spaced apart from the side wall of the mounting plate 13. That is, the part of the base body 280 where the hoisting structure 29 is provided, is spaced apart from the side wall 282 corresponding to the hoisting structure 29. Accordingly, after the base 28 is assembled with the mounting plate 13, it is possible to prevent the side wall of the mounting plate 13 from interfering with the removal of the lifting rope.

[0047] As shown in FIGS. 3-5B, the positioning groove 2822 is provided on the base body 280, and the positioning groove 2822 extends through at least partial the side wall 282 of the base body 280 to form an opening. The positioning member 135 is provided on the mounting plate 13, and after the positioning member 135 is fitted with the positioning groove 2822, at least a part of the positioning member 135 extends out of the opening in a direction away from the center of the base body 280 along the radial direction of the base body 280, and is located on the side of the side wall 282 of the base body 280 that is adjacent to the side wall of the mounting plate 13. In the axial direction of the heat pump water heater 100, the cross-sectional area of the positioning member 135 is larger than the cross-sectional area of the opening. Accordingly, the convenience and accuracy of mounting the base body 280 and the mounting plate 13 can be increased.

[0048] In some embodiments, as shown in FIGS. 4 and 5B, the cross-sectional area of the positioning member 135 tends to increase from top to bottom along the axial direction of the heat pump water heater 100, and the shape of the positioning groove 2822 matches the shape of the positioning member 135. The positioning member 135 has at least one fifth guide surface 1351, and the fifth guide surface 1351 is inclined from top to bottom toward the hoisting structure 29. For example, the orthographic projection of the positioning member 135 onto the side wall 282 of the corresponding base body 280 may be trapezoidal, and the shape of the positioning groove 2822 is the same as the shape of the positioning member 135.

[0049] When the positioning groove 2822 is fitted with the positioning member 135, the fifth guide surface 1351 contacts and abuts against the inner wall of the positioning groove 2822, so that the positioning groove 2822 is fitted with the positioning member 135 to improve the stability of the connection between the base 28 and the mounting plate 13. Furthermore, since the cross-sectional area of the top portion of the positioning member 135 is small, it is convenient to fit the positioning member 135 with the positioning groove 2822, so that the assembly efficiency of the base 28 and the mounting plate 13 can be improved.

[0050] In some embodiments, the positioning groove 2822 and the positioning member 135 are disposed adjacent to the hoisting structure 29. For example, on the side wall 282 of the base body 280, the positioning groove 2822 is spaced apart from the corresponding connecting hole 2821. In this way, the positioning groove 2822 and the hoisting structure 29 are located on the same side of the base 28, which is convenient for the installer to observe whether the assembly of the positioning groove 2822 and the positioning member 135 is in place during the hoisting process, so as to improve the assembly efficiency of the base 28 and the mounting plate 13, and thus the overall assembly efficiency of the heat pump water heater 100 can be improved.

[0051] As shown in FIGS. 8 to 10, the lower end of the second housing 21 is detachably connected to the mounting plate 13. The second housing 21 and the mounting plate 13 form a second accommodating cavity 20 (i.e., an accommodating cavity), and the compressor 22, the evaporator 23, the throttling assembly 24, the fan assembly 25 and the electric control box 26 are all positioned in the second accommodating cavity 20.

[0052] One of the second housing 21 and the mounting plate 13 is provided with an accommodating portion 131, and the other of the second housing 21 and the mounting plate 13 is provided with a snap-fitting portion 215, and the snap-fitting portion 215 is fitted in the accommodating portion 131 to connect the second housing 21 and the mounting plate 13. For example, the second housing 21 includes a snap-fitting portion 215, and the snap-fitting portion 215 may be a boss. The mounting plate 13 includes an accommodating portion 131, and the accommodating portion 131 may be a groove.

[0053] As shown in FIG. 17, the accommodating portion 131 is provided on the outer peripheral edge of the mounting plate 13. The accommodating portion 131 is formed such that a part of the mounting plate 13 is recessed toward the central axis of the mounting plate 13. As shown in FIGS. 11 and 14, the snap-fitting portion 215 is provided on the inner wall surface of the second housing 21, and is located at one end of the second housing 21 adjacent to the mounting plate 13. At the time of assembly, the second housing 21 can be pre-installed to the mounting plate 13 by the engagement of the snap-fitting portion 215 and the accommodating portion 131.

[0054] In some embodiments, one end of the snap-fitting portion 215 extends in the direction towards the central axis of the second housing 21, and the other end of one end of the snap-fitting portion 215 is connected to the second housing 21. The width of one end of the snap-fitting portion 215 is smaller than the width of the other end so as to be fitted with the corresponding accommodating portion 131.

[0055] As shown in FIG. 1, the heat pump water heater 100 further includes a display device 27 (such as a display panel), and the display device 27 is disposed on the second housing 21. The display device 27 is configured to display the water temperature in the water tank body 12. When the display device 27 is mounted on the second housing 21, the second housing 21 may be pre-installed on the mounting plate 13 by the engagement of the snap-fitting portion 215 and the accommodating portion 131, and then the display device 27 may be wired to prevent the second housing 21 from falling off from the mounting plate 13 at the time of wiring. Moreover, the assembly mode is simple, the operation is convenient, and the assembly efficiency can be further improved.

[0056] In some embodiments, as shown in FIGS. 8, 10, and 17, the mounting plate 13 includes a mounting plate body 132 and a fitting portion 133 connected to each other. The mounting plate body 132 is connected to the first housing 11, the fitting portion 133 is provided in the circumferential direction of the mounting plate body 132 and extends in a direction away from the first housing 11, and the accommodating portion 131 is formed on the fitting portion 133.

[0057] As shown in FIGS. 10 and 17, the shape of the mounting plate body 132 is compatible with the shape of the top portion of the first housing 11 to separate the heat pump device 2 from the water tank body 12 and prevent water in the water tank body 12 from entering the second housing 21 to cause a short circuit of the heat pump device 2.

[0058] The fitting portion 133 is located at the edge of the mounting plate body 132 and on the side away from the water tank assembly 1. Further, the fitting portion 133 extends in the circumferential direction of the mounting plate body 132 and is perpendicular to the mounting plate body 132. Further, the fitting portion 133 is spaced apart from the outer peripheral surface of the mounting plate body 132 so that the fitting portion 133 can be positioned within the second housing 21 after the second housing 21 and the mounting plate 13 are assembled, and at this time, the lower end face of the second housing 21 abuts against the outer peripheral surface of the mounting plate body 132.

[0059] Accordingly, the structure of the mounting plate 13 is simple and easy to process, and the tightness of the connection between the second housing 21 and the mounting plate 13 can be improved, and external liquid can be prevented from entering the inside of the second housing 21 from the connection, thereby playing a waterproof effect on the compressor 22 and the like.

[0060] As shown in FIGS. 11 to 14, the second housing 21 includes a first sub-housing 211 and a second sub-housing 212 that are detachably connected. The snap-fitting portion 215 includes a first sub-snap-fitting portion 2111 and a second sub-snap-fitting portion 2121. The first sub-housing 211 is provided with a plurality of first sub-snap-fitting portions 2111, and the plurality of first sub-snap-fitting portions 2111 are arranged at intervals in a circumferential direction of the first sub-housing 211. The second sub-housing 212 is provided with a plurality of second sub-snap-fitting portions 2121, and the plurality of second sub-snap-fitting portions 2121 are arranged at intervals in a circumferential direction of the second sub-housing 212.

[0061] The plurality of accommodating portions 131 include a plurality of first sub-accommodating portions 1311 and a plurality of second sub-accommodating portions 1312. At the time of installation, the first sub-snap-fitting portions 2111 are respectively positioned in the first sub-accommodating portions 1311 to pre-install the first sub-housing 211 on the mounting plate 13. The second sub-snap-fitting portions 2121 are located in the second sub-accommodating portions 1312, respectively, so as to pre-install the second sub-housing 212 to the mounting plate 13.

[0062] In some embodiments, as shown in FIG. 11, the display device 27 is disposed in the first sub-housing 211. At this time, when the display device 27 is mounted on the first sub-housing 211, the first sub-housing 211 can be pre-installed on the mounting plate 13 by the engagement of the first sub-snap-fitting portion 2111 and the first sub-accommodating portion 1311, and then the display device 27 can be wired to prevent the first sub-housing 211 from falling off from the mounting plate 13 during wiring. The second sub-housing 212 is then connected to the first sub-housing 211, thereby providing sufficient space for wiring operation.

[0063] In some embodiments, among the plurality of first sub-snap-fitting portions 2111, at least two first sub-snap-fitting portions 2111 which are located at both ends in a circumferential direction of the first sub-housing 211 have a first guide surface. Among the plurality of second sub-snap-fitting portions 2121, at least two second sub-snap-fitting portions 2121 which are located at both ends in a circumferential direction of the second sub-housing 212 have a second guide surface.

[0064] It can be understood that at least two of the plurality of first sub-accommodating portions 1311 have a third guide surface, and the third guide surface is in contact with the first guide surface. At least two of the plurality of second sub-accommodating portions 1312 have a fourth guide surface, and the fourth guide surface is in contact with the second guide surface.

[0065] At the time of installation, the first guide surface mates with the third guide surface to quickly install the first sub-housing 211 to the mounting plate 13, and the second guide surface mates with the fourth guide surface to quickly install the second sub-housing 212 to the mounting plate 13. In this way, it is advantageous to improve the assembly efficiency between the housing and the mounting plate 13.

[0066] In some embodiments, along the radial direction of the mounting plate 13, the plurality of second sub-snap-fitting portions 2121 on the second sub-housing 212 are respectively located at both ends in the circumferential direction of the second sub-housing 212. This arrangement can ensure that there is sufficient space in the middle of the second sub-housing 212, facilitating the installation of a fan assembly 25 with a larger size into the second accommodating cavity 20 and adjacent to the side of the second sub-housing 212, so as to make full use of the space in the second housing 21, make the arrangement of the heat pump device 2 compact, and reduce the overall volume of the heat pump device 2.

[0067] In some embodiments, as shown in FIGS. 11 and 14, the second housing 21 further includes at least one sealing component 216, and the sealing component 216 is disposed on the inner side wall of the second housing 21 and on a side of the second housing 21 adjacent to the mounting plate 13. For example, the sealing component 216 is positioned between two adjacent snap-fitting portions 215 of the plurality of snap-fitting portions 215. At the time of installation, the sealing component 216 abuts against the outer peripheral surface of the fitting portion 133.

[0068] As a result, the sealing property between the mounting plate 13 and the second housing 21 can be further improved, external impurities or liquids can be prevented from entering the second housing 21, and the cleanliness of the inside of the second housing 21 can be ensured.

[0069] In some embodiments, as shown in FIG. 23, at least one first limiting portion 136 is provided on the outer peripheral surface of the fitting portion 133, that is, the first limiting portion 136 is provided on the side of the fitting portion 133 adjacent to the second housing 21. The sealing component 216 abuts against a first limiting portion 136, and the first limiting portion136 may be supported on the corresponding sealing component 216.

[0070] In some embodiments, the at least one sealing component 216 includes a plurality of sealing components 216, and a plurality of first sub-sealing components 2161 are arranged at intervals in the circumferential direction of the inner side wall of the second housing 21. The at least one first limiting portion 136 includes a plurality of first limiting portions 136, and the plurality of first limiting portions 136 are arranged at intervals in the circumferential direction of the mounting plate 13.

[0071] In this way, by the engagement of the first limiting portion 136 and the sealing component 216, the relative movement of the second housing 21 and the mounting plate 13 in the up-down direction can be avoided, and the mounting plate 13 and the second housing 21 can be avoided from being disengaged. Furthermore, it can further play a waterproofing role.

[0072] In some embodiments, a latch 2113 is provided on one of the first sub-housing 211 and the second sub-housing 212, a second limiting portion 134 is provided on the mounting plate 13, and the latch 2113 abuts against the second limiting portion 134. As shown in FIGS. 11 and 13, two latches 2113 are provided at one end of the inner wall surface of the first sub-housing 211 adjacent to the mounting plate 13. The two latches 2113 are respectively located at both ends in the circumferential direction of the first sub-housing 211, and the two latches 2113 are located on the side of the first sub-snap-fitting portion 2111 away from the sealing component 216.

[0073] As shown in FIG. 17, a side of the fitting portion 133 adjacent to the center of the mounting plate body 132 is provided with two second limiting portions 134, and the two second limiting portions 134 may be opposite in the radial direction of the mounting plate body 132. At the time of installation, the first sub-snap-fitting portion 2111 and the second sub-snap-fitting portion 2121 are fitted into the corresponding accommodating portion 131, respectively, and the latch 2113 is fitted to the side wall of the second limiting portion 134. As a result, rotation of the second housing 21 about the central axis of the mounting plate 13 can be avoided, and the second housing 21 can be firmly fixed to the mounting plate 13.

[0074] As shown in FIGS. 11 to 13, the first sub-housing 211 further includes a first mounting post 2115. As shown in FIGS. 14 to 16, the second sub-housing 212 further includes a second mounting post 2125, and the second mounting post 2125 is provided corresponding to the first mounting post 2115. Two ends of a fastener are connected to the first mounting post 2115 and the second mounting post 2125, respectively.

[0075] At the time of installation, after the first sub-housing 211 and the second sub-housing 212 are connected, both ends of the fastener extend into the first mounting post 2115 and the second mounting post 2125, respectively. Accordingly, the connection reliability of the first sub-housing 211 and the second sub-housing 212 can be improved, and the first sub-housing 211 and the second sub-housing 212 can be avoided from being disengaged.

[0076] In some embodiments, the first sub-housing 211 is provided with at least one first connecting portion 213, and the second sub-housing 212 is provided with less than one second connecting portion 214, and the second connecting portion 214 is matched with the first connecting portion 213 to improve the waterproof performance of the connection between the first sub-housing 211 and the second sub-housing 212.

[0077] For example, one of the first connecting portion 213 and the second connecting portion 214 has a protrusion, and the other of the first connecting portion 213 and the second connecting portion 214 has a groove.

[0078] Hereinafter, the configurations of the second connecting portion 214 and the first connecting portion 213 will be described by taking an example in which the first connecting portion 213 has a groove and the second connecting portion 214 has a protrusion.

[0079] As shown in FIGS. 18 to 20, the first connecting portion 213 is provided at the edge of the first sub-housing 211 and extends in the axial direction of the first sub-housing 211. The second connecting portion 214 is provided at the edge of the second sub-housing 212 and extends in the axial direction of the second sub-housing 212. At the time of installation, the second connecting portion 214 is fitted into the first connecting portion 213 so that the end face of the first sub-housing 211 and the end face of the second sub-housing 212 are fitted to each other, and the gap at the connection between the first sub-housing 211 and the second sub-housing 212 is reduced, so that the sealing property at the connection between the first sub-housing 211 and the second sub-housing 212 can be improved.

[0080] In this way, external liquid (such as water) is prevented from entering the second housing 21 through the above-mentioned connection, achieving the waterproof protection of the compressor 22, the fan assembly 25 and the evaporator 23 in the second housing 21, thereby enhancing the waterproof effect of the heat pump water heater 100. Furthermore, smooth connection between the first sub-housing 211 and the second sub-housing 212 can be ensured, so that the appearance assembly effect of the first sub-housing 211 and the second sub-housing 212 is good.

[0081] As shown in FIG. 19, the first connecting portion 213 includes a first segment 2131 and a second segment 2132. The first segment 2131 extends in the axial direction of the first housing 11. One end of the second segment 2132 is connected to the first segment 2131, and the other end of the second segment 2132 extends in a direction toward the center of the first housing 11.

[0082] As shown in FIG. 21, the second connecting portion 214 includes a fourth segment 2141 and a fifth segment 2142. The fourth segment 2141 extends in the axial direction of the first housing 11, and the fourth segment 2141 fits within the first segment 2131. One end of the fifth segment 2142 is connected to the fourth segment 2141, the other end of the fifth segment 2142 extends in a direction toward the center of the first housing 11, and the fifth segment 2142 is fitted in the second segment 2132.

[0083] In some embodiments, the second segment 2132 extends in a horizontal direction toward a direction away from the first segment 2131, at which point the first connecting portion 213 forms a first bending portion. The fifth segment 2142 extends in the horizontal direction in a direction away from the fourth segment 2141, at which point the second connecting portion 214 forms a second bending portion.

[0084] Accordingly, when the second connecting portion 214 is embedded in the first connecting portion 213, the first connecting portion 213 and the second connecting portion 214 can further realize the sealing of the first sub-housing 211 and the second sub-housing 212, making it difficult for external liquid to penetrate into the second housing 21, thereby strengthening the waterproof effect of the heat pump water heater 100.

[0085] Referring to FIGS. 22 and 24, in some embodiments, the second housing 21 further includes a top cover 3, and top cover 3 is provided on a side (such as an upper side) of the first sub-housing 211 and the second sub-housing 212 away from the water tank assembly 1. The top cover 3 includes a top cover extension segment 31 and a top cover body 32 connected to each other, and the top cover body 32 is opposite to the top of the second housing 21, and the top cover extension segment 31 extends obliquely downward in a direction away from the top cover body 32, and the end face of the free end of the top cover extension segment 31, i.e. the bottom wall of the top cover 3, abuts against the outer side wall of the second segment 2132.

[0086] As a result, the top cover 3 covers the upper part of the mating position of the first connecting portion 213 and the second connecting portion 214, providing protection for the first sub-housing 211 and the second sub-housing 212, so that the upper part of the mating position of the first connecting portion 213 and the second connecting portion 214 has double waterproofing performance, which is beneficial to enhance the waterproofing effect of the heat pump water heater 100.

[0087] In some embodiments, as shown in FIGS. 19 and 21, the first connecting portion 213 further includes a third segment 2133. One end of the third segment 2133 is connected to the other end of the second segment 2132, and the other end of the third segment 2133 extends obliquely in a direction away from the second segment 2132. The second connecting portion 214 further includes a sixth segment 2143. One end of the sixth segment 2143 is connected to the other end of the fifth segment 2142, the other end of the sixth segment 2143 extends obliquely in a direction away from the end of the second connecting portion 214, and the sixth segment 2143 is fitted in the third segment 2133.

[0088] In some embodiments, the third segment 2133 extends obliquely upward in a direction away from the second segment 2132. The length of the third segment 2133 may be less than the distance from the top cover body 32 to the second segment 2132. Likewise, the sixth segment 2143 extends obliquely upward in a direction away from the fifth segment 2142. At this time, one end of the first connecting portion 213 and one end the second connecting portion 214, adjacent to the top cover 3, are provided with a plurality of bending portions. As a result, the first sub-housing 211 and the second sub-housing 212 are further sealed, enhancing the waterproofing performance of the second housing 21.

[0089] It will be appreciated that the mounting plate 13 is positioned between the first housing 11 and the second housing 21. In some embodiments, the side wall of the mounting plate 13 projects into the second housing 21. As shown in FIG. 17, the fitting portion 133 of the mounting plate 13 extends upward to form a side wall, and the diameter of the side wall is smaller than the diameter of the second housing 21. At the time of installation, the second housing 21 is located on the outside of the side wall of the mounting plate 13, so that the lower parts of the first connecting portion 213 and the second connecting portion 214 have double waterproofing performance, enhancing the waterproofing effect of the heat pump water heater 100.

[0090] Further, referring to FIGS. 22 and 23, along the axial direction of the first housing 11, the free end of the side wall of the mounting plate 13 (i.e., the top end of the fitting portion 133) is higher than the free end of the first segment 2131 (i.e., the bottom end of the first segment 2131). For example, at the connection of the first sub-housing 211 and the second sub-housing 212, the end face of the free end of the side wall of the mounting plate 13 is located above the free end of the first segment 2131, and in this situation, the free end of the side wall of the mounting plate 13 partially overlap with the free end of the first segment 2131 in the axial direction of the second housing 21, and even if the external liquid penetrates into the second housing 21 from the lower part of the mating position of the first connecting portion 213 and the second connecting portion 214, the side wall of the mounting plate 13 can block the external liquid from further penetrating into the second housing 21, thereby further strengthening the waterproof effect of the heat pump water heater 100.

[0091] In some embodiments, there are two first connecting portions 213 and two the second connecting portions 214, and with reference to FIGS. 18 to 20, the two first connecting portions 213 are respectively located at both ends in the circumferential direction of the first sub-housing 211, and the two second connecting portions 214 are respectively located at both ends in the circumferential direction of the second sub-housing 212. The waterproof effect of the connection between the first sub-housing 211 and the second sub-housing 212 is ensured by mating the two first connecting portions 213 with the two second connecting portions 214.

[0092] As shown in FIGS. 25 and 26, the fan assembly 25 includes a volute 251, a volute extending portion 252, and a wind wheel 255. The volute 251 is provided on the side of the evaporator 23 away from the compressor 22, and the volute 251 has a second air inlet 2511 and a second air outlet 2512. As shown in FIGS. 28 and 31, the second air inlet 2511 is disposed facing the evaporator 23. The second air outlet 2512 opposes and communicates with the first air outlet 302 in the axial direction of the second housing 21. The air entering the inside of the second housing 21 from the first air inlet 301 is adapted to flow through the second air inlet 2511 and enter the fan assembly 25, and then be discharged from the second air outlet 2512 and the first air outlet 302.

[0093] In some embodiments, as shown in FIGS. 25 and 26, one end of the volute extending portion 252 is connected to the second air outlet 2512, the other end of the volute extending portion 252 is opposite to the first air outlet 302, the second air outlet 2512 is oriented toward the first air outlet 302 (i.e., the up-down direction), and the volute extending portion 252 is inclined in a direction close to the evaporator 23.

[0094] In some embodiments, the wind wheel 255 is provided in the volute 251, and after the air entering the second housing 21 from the first air inlet 301 flows through the evaporator 23 and exchanges heat with the evaporator 23, the air enters the volute 251 through the second air inlet 2511 and is discharged from the first air outlet 302 through the second air outlet 2512.

[0095] In some embodiments, the volute extending portion 252 is disposed obliquely toward the side on which the evaporator 23 is located. In this way, on the one hand, the volute extending portion 252 can form an avoidance space on the other side away from the evaporator 23, facilitating the installation of the second housing 21. On the other hand, a partial space around the evaporator 23 can be utilized to make the internal structure of the heat pump device 2 more compact, and facilitate communication between the second air outlet 2512 and the first air outlet 302 to increase the air outlet volume at the first air outlet 302.

[0096] Accordingly, by providing the inclined volute extending portion 252 at the second air outlet 2512 of the volute 251, the space at the top of the evaporator 23 can be fully utilized, facilitating an increase in the area of the second air outlet 2512, which is conducive to aligning the second air outlet 2512 with the first air outlet 302, thereby increasing the air outlet volume at the second air outlet 2512 and ensuring the air to be promptly exhausted, which improves the utilization rate of the internal space of the second housing 21. Moreover, it avoids interference between the second air outlet 2512 and the second housing 21 during the assembly of the second housing 21 with the mounting plate 13, which could otherwise affect the efficiency of assembling the second housing 21.

[0097] As shown in FIG. 26, the volute extending portion 252 includes an opening segment 253 and a connecting segment 254, the connecting segment 254 is connected to the opening segment 253, and the connecting segment 254 is located closer to the volute 251 than the opening segment 253. One end of the opening segment 253 is opposite to the first air outlet 302. For example, the opening segment 253 is circular in cross-section. One end of the connecting segment 254 is connected to the other end of the opening segment 253, and the other end of the connecting segment 254 is connected to the second air outlet 2512. For example, the cross-sectional shape of the other end of the connecting segment 254 is substantially rectangular.

[0098] In some embodiments, the air flowing out of the second air outlet 2512 sequentially passes through the connecting segment 254 and the opening segment 253, and then flows out of the first air outlet 302. The cross-sectional shape of the opening segment 253 is adapted to the shape of the first air outlet 302, thereby facilitating an increase in the air outlet area of the volute extending portion 252. The shape of the cross-section of the end of the connecting segment 254 away from the opening segment 253, such as a rectangular shape, is adapted to the shape of the second air outlet 2512. In this way, the air outlet area of the second air outlet 2512 can be increased, and the air outlet volume of the volute 251 can be increased, which is beneficial to improve the heat exchange efficiency of the evaporator 23.

[0099] As shown in FIG. 27, the connecting segment 254 includes a first surface 2541, a second surface 2542, a third surface 2543, a fourth surface 2544, a fifth surface 2545, and a sixth surface 2546 that are sequentially connected along the circumferential direction of the second air outlet 2512 of the volute 251. The first surface 2541 is connected to the evaporator 23 and the second surface 2542, respectively. The fourth surface 2544 is opposite to the side surface of the evaporator 23 facing the fan assembly 25. The sixth surface 2546 is connected to the fifth surface 2545 and the evaporator 23, respectively, and the sixth surface 2546 faces the first surface 2541.

[0100] For example, one side of the first surface 2541 is connected to the evaporator 23, one side of the second surface 2542 is connected to the other side of the first surface 2541, one side of the third surface 2543 is connected to the other side of the second surface 2542, one side of the fourth surface 2544 is connected to the other side of the third surface 2543, the fourth surface 2544 is opposite to the side surface of the evaporator 23 facing the fan assembly 25, one side of the fifth surface 2545 is connected to the other side of the fifth surface 2545, the other side of the sixth surface 2546 is connected to the evaporator 23, and the sixth surface 2546 is opposite to the first surface 2541. At least the second to fifth surfaces 2545 extend obliquely toward the evaporator 23 and in the direction of the second air outlet 2512 toward the first air outlet 302 (i.e., in a bottom-to-top direction).

[0101] It should be noted that each of the outer peripheral surfaces of the first surface 2541 to the sixth surface 2546 is an irregularly curved surface. For example, the radius of curvature of the portion of the fourth surface 2544 adjacent to the opening segment 253 is greater than the radius of curvature of the portion of the fourth surface 2544 adjacent to the second air outlet 2512.

[0102] The end face of the second air outlet 2512 includes a first connecting segment, a second connecting segment, a third connecting segment, a fourth connecting segment, a fifth connecting segment, and a sixth connecting segment, and a region surrounded by connection lines between the end points of both ends of the first connecting segment and the corresponding points of the opening segment 253 along the direction of the central axis of the opening segment 253 (i.e., the up-down direction) forms the first surface 2541. The second to sixth surfaces 2542 to 2546 are formed in the same way. As a result, the first surface 2541 to the sixth surface 2546 extend obliquely from the second air outlet 2512 toward the opening segment 253, so that the volute extending portion 252 forms the lower end face of the connecting segment 254 according to the shape of the second air outlet 2512, so as to ensure that the cross-sectional area of the lower end face of the connecting segment 254 is compatible with the second air outlet 2512, thereby increasing the air outlet volume of the volute 251.

[0103] As shown in FIG. 27, two corners of the second air outlet 2512 away from the evaporator 23 have a first rounded corner 256 and a second rounded corner 257, respectively, the second surface 2542 and the third surface 2543 are connected at the first rounded corner 256, and the fifth surface 2545 is connected at the second rounded corner 257. That is, the second connecting segment and the third connecting segment form the first rounded corner 256, and the fifth connecting segment forms the second rounded corner 257. The first rounded corner 256 and the second rounded corner 257 are formed during the molding process of the volute 251.

[0104] In some embodiments, the cross-sectional area of the volute extending portion 252 decreases as the second surface 2542, the third surface 2543, and the fifth surface 2545 extend toward the opening segment 253 to direct air to the opening segment 253. Accordingly, the arrangement of the first rounded corner 256 and the second rounded corner 257 facilitates the reduction of the resistance of air flowing inside the volute 251, and facilitates the arrangement of the second surface 2542, the third surface 2543, and the fifth surface 2545, so that the connecting segment 254 is adapted to the second air outlet 2512.

[0105] In some embodiments, as shown in FIGS. 27 and 28, the first surface 2541 extends obliquely toward the center of the volute 251 (such as the side where the wind wheel 255 in FIG. 28 is located) in the direction of the second air outlet 2512 to the opening segment 253. Accordingly, by inclining the first surface 2541, it is possible to prevent the opening portion 253 from interfering with the installation of the second housing 21, and to improve the utilization rate of the internal space of the second housing 21.

[0106] As shown in FIG. 28, the inclination angle of the first surface 2541 is β. That is, the angle between the orthographic projection of the first surface 2541 on the first cross-sectional plane and the orthographic projection of the central axis of the opening segment 253 on the first cross-sectional plane is β, and the angle β satisfies β ≤ 3 °. That is, the angle between the orthographic projection of the first surface 2541 onto the evaporator 23 and the central axis of the opening segment 253 is β, and the angle β satisfies: β ≤ 3 °.

[0107] It should be noted that the first cross-sectional plane is a cross section of the fan assembly 25 perpendicular to the central axis direction of the wind wheel 255. The central axis of the wind wheel 255 is a dashed line N-N shown in FIG. 26.

[0108] As can be understood, the larger the angle β, the larger the inclination angle of the first surface 2541, and the larger the change in direction of the air as it flows through the first surface 2541. Accordingly, the air may generate a vortex near the first surface 2541, thereby affecting the flow rate of the air within the volute extending portion 252 and reducing the air outlet volume of the second air outlet 2512.

[0109] Accordingly, the angle β between the first surface 2541 and the central axis of the opening segment 253 is defined so that the first surface 2541 is located within a preset position range, which facilitates the alignment of the volute extending portion 252 with the first air outlet 302, thereby ensuring the air outlet effect.

[0110] In some embodiments, as shown in FIG. 29, the fourth surface 2544 extends obliquely toward the evaporator 23 in the direction of the second air outlet 2512 toward the opening segment 253, and the inclination angle of the fourth surface 2544 is α, and the angle α satisfies: α ≤ 5 °. That is, the angle between the orthographic projection of the fourth surface 2544 on the second cross-sectional plane and the orthographic projection of the central axis of the opening segment 253 on the second cross-sectional plane is α, and the angle α satisfies: α ≤ 5 °.

[0111] The second cross-sectional plane is a longitudinal plane crossing the central axis of the wind wheel 255, and the longitudinal plane extends in the direction of the central axis of the opening segment 253. That is, the second cross-section is a cross-section of the fan assembly 25 taken through the dashed line M-M in FIG. 28.

[0112] It will be appreciated that the greater the angle α, the greater the inclination angle of the fourth surface 2544. Affected by the inclination angle of the fourth surface 2544, the air may also generate a vortex near the fourth surface 2544, thereby affecting the flow rate of the air in the volute extending portion 252 and reducing the air outlet volume of the second air outlet 2512.

[0113] Accordingly, by specifying the angle α between the fourth surface 2544 and the central axis of the opening segment 253, the air outlet effect of the volute extending portion 252 can be improved, and the resistance of the volute extending portion 252 to the air flow can be effectively reduced, ensuring that air from the second air outlet 2512 can be promptly exhausted from the volute extending portion 252.

[0114] Referring to FIGS. 27 and 30, the evaporator 23 further includes an avoidance portion 231, and the volute extending portion 252 is partially located in the avoidance portion 231. The avoidance portion 231 is configured to avoid the volute extending portion 252. The ratio of the first orthographic projection area to the second orthographic projection area of the avoidance portion 231 on the horizontal plane is A, and the second orthographic projection area is the orthographic projection area of one end of the volute extending portion 252 away from the second air outlet 2512 on the horizontal plane (that is, the opening segment 253), and the ratio A satisfies: 1 / 6 ≤ A ≤ 1 / 2.

[0115] It can be understood that the smaller the ratio A of the orthographic projection area of the avoidance portion 231 to the opening portion 253 is, the smaller the space of the avoidance portion 231 is. In this case, the volute extending portion 252 cannot appropriately utilize the internal space of the evaporator 23, resulting in a large overall volume of the evaporator 23 and the volute 251, which is not conducive to the miniaturization design of the heat pump device 2. Moreover, insufficient space in the avoidance portion 231 will also affect the size of the cross-sectional area of the opening segment 253, thereby influencing the air outlet effect.

[0116] The larger the ratio A between the orthogonal projection area of the avoidance portion 231 and the opening segment 253, the smaller the area where the orthogonal projection of the opening segment 253 intersects with the orthogonal projection of the second air outlet 2512 on a horizontal plane. Therefore, the air outlet of the second air outlet 2512 may be interfered with, thereby reducing the air outlet efficiency of the second air outlet 2512.

[0117] Therefore, by specifying the ratio of the orthogonal projection areas of the avoidance portion 231 and the opening segment 253 on a horizontal plane, it facilitates the arrangement of the first air outlet 302 opposite to the opening segment 253, avoiding interference from the first air outlet 302 during the installation of the opening segment 253. Additionally, it enhances the structural compactness of the volute extending portion 252, the volute 251, and the evaporator 23, thereby increasing the internal space of the volute 251. In addition, the air outlet efficiency of the volute extending portion 252 can be ensured, so that air can quickly flow from the second air outlet 2512 to the first air outlet 302, and thus be discharged from the first air outlet 302.

[0118] As shown in FIG. 31, the connection between the end of the volute extending portion 252 away from the opening segment 253 (i.e., the bottom end) and the evaporator 23 is transitioned through a third rounded corner 258. When the air flows out of the second air outlet 2512, the air can flow to the volute extending portion 252 through the third rounded corner 258 at the connection between the volute extending portion 252 and the evaporator 23, thereby increasing the air guidance at the connection, and preventing the air flow direction from changing greatly at the connection, which affects the air outlet efficiency of the volute extending portion 252.

[0119] As shown in FIGS. 26 and 29, the volute 251 includes a third housing 2513 and a fourth housing 2514 connected to each other along the central axis direction of the wind wheel 255. The evaporator 23 includes a conduit for evaporation and a side plate to which the conduit is mounted. The third housing 2513 is connected to the side plate of the evaporator 23, and the third housing 2513 and the side plate are integrally formed. The fourth housing 2514 is connected to the side of the third housing 2513 away from the evaporator 23. Thus, the third housing 2513 being integrally formed with the side plate of the evaporator 23 can reduce the number of components of the heat pump device 2, which is beneficial to improve the installation efficiency of the volute 251.

[0120] As shown in FIGS. 31 and 34, the second air inlet 2511 of the volute 251 communicates with the side plate of the evaporator 23, and the air passes through the conduit of the evaporator 23 for heat exchange, reaches the position where the side plate of the evaporator 23 is located, and then enters the volute 251 through the second air inlet 2511. Thus, the third housing 2513 being integrally formed with the side plate of the evaporator 23 can ensure the sealing property between the volute 251 and the evaporator 23, which is advantageous for increasing the air inlet volume of the second air inlet 2511.

[0121] As shown in FIG. 29, the ratio of the width of the third housing 2513 to the width of the fourth housing 2514 in the thickness direction of the evaporator 23, that is, in the central axis direction of the wind wheel 255, is B, and the ratio B satisfies 3 / 7 ≦ B ≦ 1.

[0122] As can be understood, if the width ratio B between the third housing 2513 and the fourth housing 2514 is less than 3 / 7, the internal space of the evaporator 23 cannot be sufficiently utilized, and the structural strength of the connection between the third housing 2513 and the evaporator 23 may be reduced. When the width ratio B between the third housing 2513 and the fourth housing 2514 is greater than 1, the third housing 2513 is likely to interfere with the internal structure of the evaporator 23, and the air outlet volume of the second air outlet 2512 is affected.

[0123] Thus, by specifying the width ratio of the third housing 2513 and the fourth housing 2514, the third housing 2513 can reasonably utilize the space of the side plate, facilitating the alignment of the volute extending portion 252 with the first air outlet 302, ensuring the connection strength between the third housing 2513 and the evaporator 23, increasing the internal space of the volute 251, and increasing the air inlet volume and the air outlet volume of the volute 251.

[0124] In some embodiments, as shown in FIG. 25, the top cover 3 has the first air inlet 301 and the first air outlet 302, and both of the first air inlet 301 and the first air outlet 302 communicate with the second accommodating cavity 20.

[0125] In some embodiments, as shown in FIG. 8, the first air inlet 301 and the first air outlet 302 are respectively located on both sides of the evaporator 23, the first air outlet 302 and the fan assembly 25 are located on the same side of the evaporator 23 and the first air outlet 302 communicates with the fan assembly 25, and the air entering the inside of the second housing 21 from the first air inlet 301 is adapted to flow through the evaporator 23 and exchange heat with the evaporator 23 and then be discharged from the first air outlet 302 through the fan assembly 25.

[0126] In some embodiments, the first air inlet 301 and the first air outlet 302 are disposed non-centrally symmetrically with respect to the top cover 3, that is, the first air inlet 301 and the first air outlet 302 are not disposed opposite each other in the radial direction of the top cover 3. In this way, the first air inlet 301 can be avoided from being disturbed by components such as the electric control box 26, and the air inlet space and the air inlet efficiency can be increased. Furthermore, the air entering the second housing 21 from the first air inlet 301 needs to pass through a preset angle when flowing through the evaporator 23, and then flows out from the first air outlet 302, which can extend the flow path of the air from the first air inlet 301 to the first air outlet 302, so that the air can sufficiently exchange heat with the compressor 22, the electric control box 26, the evaporator 23, and the like.

[0127] As shown in FIG. 32, an angle between a line connecting the center of the first air inlet 301 to the center of the top cover and a line connecting the center of the first air outlet 302 to the center of the top cover 3 is γ, and the angle γ satisfies 80 ° ≦ γ < 180 °. That is, the center of the first air inlet 301 is connected to the center of the top cover 3 to form a first line segment, the center of the first air outlet 302 is connected to the center of the top cover 3 to form a second line segment, and the angle formed by orthographic projections of the first line segment and the second line segment onto the top cover 3 along the axial direction of the second housing 21 is γ.

[0128] It can be understood that the smaller the angle γ, the closer the distance between the first air inlet 301 and the first air outlet 302. When the angle γ is less than 80°, the first air inlet 301 and the first air outlet 302 are likely to interfere with each other, resulting in the air inlet and air outlet effects of the heat pump water heater 100 being affected. It may also result in a small angle between the lines connecting the first air inlet 301 and the first air outlet 302 respectively to the second air inlet 2511, increasing the resistance to air flow within the second housing 21. Moreover, it is inconvenient for the arrangement of components such as the electric control box 26 and the compressor 22 inside the second housing 21.

[0129] The air entering the interior of the second housing 21 through the first air inlet 301 passes through the evaporator 23, then through the second air inlet 2511 and the second air outlet 2512, and finally exits through the first air outlet 302. Therefore, when the central position of the second air inlet 2511 is fixed, the larger the angle γ is, the shorter the passage through which the air flows inside the second housing 21 is, and the weaker the heat dissipation effect on the compressor 22 and the electric control box 26 inside the second housing 21 is. Further, the residence time of the air inside the second housing 21 becomes short, reducing the evaporation efficiency of the evaporator 23.

[0130] When the angle γ is equal to 180°, the first air inlet 301 and the first air outlet 302 are provided symmetrically with respect to the center of the second housing 21. In this case, the first air inlet 301 may be partially located above the electric control box 26, resulting in a limited air intake space, and the air entering the interior of the second housing 21 through the first air inlet 301 is obstructed by the electric control box 26 and cannot reach the location of the evaporator 23 smoothly, leading to a loss of air flow.

[0131] For example, the angle γ between the lines connecting the centers of the first air inlet 301 and the first air outlet 302 respectively to the center of the top cover 3 is 105°.

[0132] Thus, by specifying the angle γ between the first air inlet 301 and the first air outlet 302, on the one hand, it can ensure the air intake effect of the first air inlet 301, thereby ensuring the air volume required for the operation of the evaporator 23 and improving the heat exchange efficiency of the evaporator 23. On the other hand, it can ensure the air outlet effect of the first air outlet 302, which is conducive to increasing the flow rate of air inside the second housing 21, this allows the air to quickly carry away the heat generated by the operation of components such as the electric control box 26 and the compressor 22, effectively reducing the energy consumption of the heat pump water heater 100.

[0133] In some embodiments, as shown in FIGS. 32 and 33, the first air inlet 301 is disposed opposite to the compressor 22 in the axial direction of the second housing 21, and the first air inlet 301 is disposed spaced apart from the compressor 22. In other words, the first air inlet 301 is axially opposed to the compressor 22 within the second housing 21. The air entering the second housing 21 through the first air inlet 301 first passes through the compressor 22 before flowing towards the evaporator 23 and the electric control box 26.

[0134] In this way, it can avoid the obstruction of the electric control box 26 to the first air inlet 301, increase the air inlet volume of the second housing 21, and achieve temperature reduction for the compressor 22.

[0135] In some embodiments, as shown in FIGS. 31, 33, and 34, in the width direction of the evaporator 23, the second air inlet 2511 is located on the side of the evaporator 23 close to the electric control box 26. For example, the second air inlet 2511 and the electric control box 26 are located on both sides of the evaporator 23 and are disposed opposite to each other. The air entering the second housing 21 from the first air inlet 301 first passes through the compressor 22, then passes through the electric control box 26 and the evaporator 23, and finally flows to the second air inlet 2511.

[0136] Accordingly, with the action of the fan assembly 25, it ensures that the air inside the second housing 21 flows from the side of the evaporator 23 close to the electric control box 26 (side S1 as shown in FIG. 33) towards the second air inlet 2511, avoiding air flowing from the side of the evaporator 23 close to the compressor 22 (side S2 as shown in FIG. 33) towards the second air inlet 2511. In this way, the area of the evaporator 23 through which the air flows is increased, thereby enhancing the windward area of the evaporator 23. Furthermore, it ensures that the air has sufficient contact with the electric control box 26, enabling heat dissipation for the electric control box 26 and thereby guaranteeing the operational efficiency of the electric control box 26.

[0137] As shown in FIG. 34, the center of the second air inlet 2511 is located on the side of the first central plane adjacent to the base body 280. The first central plane is a central plane in a height direction of the evaporator 23, and the first central plane extends in a central axis direction of the evaporator 23.

[0138] It should be noted that the height direction of the evaporator 23 is the up-down direction shown in FIG. 34, and the width direction of the evaporator 23 is the left-right direction shown in FIG. 34.

[0139] Accordingly, positioning the center of the second air inlet 2511 below the first central plane of the evaporator 23 and close to the electric control box 26 can extend the flow path of air from the first air inlet 301 to the first air outlet 302, substantially increasing the windward area of the evaporator 23, thereby enhancing the heat exchange efficiency of the evaporator 23.

[0140] As shown in FIG. 33, the distance between the electric control box 26 and the evaporator 23 gradually increases in the direction towards the compressor 22, forming an angle θ between the electric control box 26 and the evaporator 23, where the angle θ satisfies: 15° ≤ θ ≤ 30°. The first air inlet 301 faces the compressor 22, and air enters the second housing 21 through the first air inlet 301 and then flows towards the evaporator 23 and the space between the evaporator 23 and the electric control box 26 to facilitate heat dissipation of the electric control box 26.

[0141] It can be understood that the smaller the angle θ is, the smaller the air inlet volume between the electric control box 26 and the evaporator 23, which may lead to a decrease in the heat dissipation capacity of the electric control box 26 and a decrease in the heat exchange capacity of the evaporator 23. The larger the angle θ is, the air flowing to the evaporator 23 is more likely to be blocked by the electric control box 26, causing turbulence on the surface of the electric control box 26 and resulting in air loss, which reduces the airflow into the evaporator 23 and further affects the heat exchange effect of the evaporator 23.

[0142] For example, the distance between the electric control box 26 and the evaporator 23 gradually increases in the direction toward the compressor 22, and the angle θ between the electric control box 26 and the evaporator 23 is 25°. Thus, by specifying the angle θ between the electric control box 26 and the evaporator 23, the air inlet volume of the evaporator 23 on the side close to the electric control box 26 can be increased, the heat exchange capacity and the heat exchange efficiency of the evaporator 23 can be improved, and a large amount of air can pass through the surface of the electric control box 26, enhancing the cooling effect of the electric control panel in the electric control box 26, and facilitating the heat dissipation of the electric control box 26.

[0143] As shown in FIGS. 35 and 36, the heat pump water heater 100 further includes a filter screen assembly 4. The filter screen assembly 4 is disposed in the second housing 21, and the filter screen assembly 4 is opposite to the first air inlet 301. The filter screen assembly 4 may be disposed at the top opening of the second housing 21, and may be detachably connected to the second housing 21. For example, the mounting groove is provided on the top side wall of the second housing 21, and the filter screen assembly 4 mates with the mounting groove to realize the assembly with the second housing 21. Alternatively, the filter screen assembly 4 includes a filter screen 41 and a mounting bracket 42, where the filter screen 41 is detachably arranged on the mounting bracket 42, and the mounting bracket 42 and the second housing 21 are integrally molded parts.

[0144] In some embodiments, the filter screen 41 has guide ribs 411. The mounting bracket 42 includes a bracket body and a mounting groove 421. The bracket body has a third through-hole that aligns with the first air inlet 301. The mounting grooves 421 are provided on both sides of the bracket body. The guide ribs 411 mate with the mounting groove 421 to enable the filter screen 41 to be smoothly attached to the mounting bracket 42, preventing the filter screen 41 from swinging with respect to the mounting bracket 42.

[0145] Thus, when the filter screen assembly 4 is detachably connected to the second housing 21 as a whole, it facilitates separate manufacturing of the filter screen assembly 4 and the second housing 21, reducing process complexity and improving installation efficiency. When the mounting bracket 42 included in the filter screen assembly 4 is integrally formed with the second housing 21, it can enhance the structural strength of the second housing 21, facilitate the replacement of the filter screen 41, and reduce the cost of later maintenance.

Claims

1. A heat pump water heater (100) comprising: a water tank assembly (1) comprising: a first housing (11); a water tank body (12) disposed in the first housing (11), the water tank body (12) having a water inlet (121) and a water outlet (122); and a mounting plate (13) provided on a top of the first housing (11); and a heat pump device (2) positioned on top of the water tank assembly (1), the heat pump device (2) comprising a second housing (21), wherein the second housing (21) is detachably connected to the mounting plate (13), wherein one of the second housing (21) and the mounting plate (13) is provided with at least one accommodating portion (131), and the other of the second housing (21) and the mounting plate (13) is provided with at least one snap-fitting portion (215), and the snap-fitting portion (215) is fitted in the accommodating portion (131) to connect the second housing (21) and the mounting plate (13).

2. The heat pump water heater (100) according to claim 1, characterized in that the snap-fitting portion (215) is provided on an inner wall surface of the second housing (21), wherein the mounting plate (13) comprises: a mounting plate body (132) connected to the first housing (11); and a fitting portion (133) connected to the mounting plate body (132), the fitting portion (133) being provided in a circumferential direction of the mounting plate body (132) and extending in a direction away from the first housing (11), wherein the fitting portion (133) is positioned in the second housing (21), and the accommodating portion (131) is provided in the fitting portion (133).

3. The heat pump water heater (100) according to claim 2, characterized in that the second housing (21) comprises a first sub-housing (211) and a second sub-housing (212) detachably connected to each other, wherein the at least one snap-fitting portion (215) comprises a plurality of snap-fitting portions (215), the plurality of snap-fitting portions (215) comprising at least one first sub-snap-fitting portion (2111) and at least one second sub-snap-fitting portion (2121); wherein the at least one first sub-snap-fitting portion (2111) comprises a plurality of first sub-snap-fitting portions (2111) arranged at intervals in a circumferential direction of the first sub-housing (211); and the at least one second sub-snap-fitting portion (2121) comprises a plurality of second sub-snap-fitting portions (2121) arranged at intervals in a circumferential direction of the second sub-housing (212).

4. The heat pump water heater (100) according to claim 3, characterized in that the first sub-snap-fitting portion (2111) positioned on either side of the first sub-housing (211) among the plurality of first sub-snap-fitting portions (2111) has a first guide surface, and the second sub-snap-fitting portion (2121) positioned on either side of the second sub-housing (212) among the plurality of second sub-snap-fitting portions (2121) has a second guide surface; wherein the at least one accommodating portion (131) comprises a plurality of accommodating portions (131), the plurality of accommodating portions (131) comprising a plurality of first sub-accommodating portions (1311) and a plurality of second sub-accommodating portions (1312), wherein at least two first sub-accommodating portions (1311) of the plurality of first sub-accommodating portions (1311) have third guide surfaces in contact with the first guide surface, and at least two second sub-accommodating portions (1312) of the plurality of second sub-accommodating portions (1312) have fourth guide surfaces in contact with the second guide surface.

5. The heat pump water heater (100) according to claim 3 or 4, characterized in that the plurality of second sub-snap-fitting portions (2121) are disposed close to a corresponding end portion of the second sub-housing (212), respectively.

6. The heat pump water heater (100) according to claim 3 or 4, characterized in that the second housing (21) further comprises at least one sealing component (216) positioned on a side of the second housing (21) adjacent to the mounting plate (13) and abutting against the fitting portion (133), wherein the sealing component (216) is provided between two adjacent snap-fitting portions (215) of the plurality of snap-fitting portions (215).

7. The heat pump water heater (100) according to claim 6, characterized in that at least one sealing component (216) comprises a plurality of sub-sealing components (2161), and the plurality of sub-sealing components (2161) are arranged at intervals in the circumferential direction of an inner side wall of the second housing (21).

8. The heat pump water heater (100) according to claim 7, characterized in that one of the first sub-housing (211) and the second sub-housing (212) is provided with a latch (2113), and the mounting plate (13) comprises a limiting portion (134), and the latch (2113) abuts against the limiting portion (134).

9. The heat pump water heater (100) according to claim 8, characterized in that the first sub-housing (211) is provided with at least one first connecting portion (213), and the second sub-housing (212) is provided with at least one second connecting portion (214), the second connecting portion (214) being fitted in the first connecting portion (213).

10. The heat pump water heater (100) according to claim 9, characterized in that one of the first connecting portion (213) and the second connecting portion (214) has a protrusion, and the other of the first connecting portion (213) and the second connecting portion (214) has a groove.

11. The heat pump water heater (100) according to claim 9, characterized in that the first connecting portion (213) comprises: a first segment (2131) extending in an axial direction of the first housing (11); and a second segment (2132), one end of the second segment (2132) being connected to the first segment (2131) and another end of the second segment (2132) extending toward a center of the first housing (11); wherein the second connecting portion (214) comprises: a fourth segment (2141) extending in an axial direction of the first housing (11), and the fourth segment (2141) being fitted in the first segment (2131); and a fifth segment (2142), one end of the fifth segment (2142) being connected to the fourth segment (2141), another end of the fifth segment (2142) extending toward the center of the first housing (11); and the fifth segment (2142) being fitted in the second segment (2132).

12. The heat pump water heater (100) according to claim 3, characterized in that the first sub-housing (211) further comprises a first mounting post (2115), and the second sub-housing (212) further comprises a second mounting post (2125), wherein the second mounting post (2125) is provided corresponding to the first mounting post (2115), and two ends of a fastener are connected to the first mounting post (2115) and the second mounting post (2125), respectively.

13. The heat pump water heater (100) according to claim 2, characterized in that a shape of the mounting plate body (132) is compatible with a shape of the top portion of the first housing (11).

14. The heat pump water heater (100) according to claim 1, characterized in that the water tank assembly (1) further comprises a condenser disposed in the first housing (11); wherein the heat pump device (2) further comprises a compressor (22), an evaporator (23), a fan assembly (25), and a throttling assembly (24), the compressor (22), the condenser, the throttling assembly (24), and the evaporator (23) being connected in sequence to form a refrigerant circulation loop, the compressor (22), the evaporator (23), the fan assembly (25), and the throttling assembly (24) being located in the second housing (21).

15. The heat pump water heater (100) according to claim 1, characterized in that the heat pump water heater further comprises a display device (27), the display device (27) being disposed on the second housing (21).

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