WO2024066845A1

WO2024066845A1 - Heat pump water heater

Info

Publication number: WO2024066845A1
Application number: PCT/CN2023/115034
Authority: WO
Inventors: 黄存芳; 向毅; 黄民柱; 刘裕; 王伟戈; 梁智文; 张海能
Original assignee: 海信（广东）空调有限公司; 海信家电集团股份有限公司
Priority date: 2022-09-30
Filing date: 2023-08-25
Publication date: 2024-04-04

Abstract

A heat pump water heater (100), comprising a water tank assembly (1), a heat pump device (2), and a sealing member (50). The water tank assembly (1) comprises a first housing (11), a water tank body (12), a condenser, and a mounting plate (13). The heat pump device (2) comprises a compressor (22), an evaporator (23), a throttling assembly (24), and a base (28). The compressor (22), the condenser, the throttling assembly (24), and the evaporator (23) are connected in sequence to form a refrigerant circulation loop. When a refrigerant flows in the refrigerant circulation loop, the condenser exchanges heat with the water tank body (12) so as to heat water in the water tank body (12). The mounting plate (13) comprises a mounting plate body (132) and a second drainage part (137). The base (28) comprises a base body (280) and a first drainage part (281). The first drainage part (281) and the second drainage part (137) are opposite and communicated with each other in the axial direction of the heat pump water heater (100). The sealing member (50) is provided between the first drainage part (281) and the second drainage part (137) to seal a gap between the first drainage part (281) and the second drainage part (137).

Description

Heat Pump Water Heater

This application claims the priority of Chinese patent application No. 202320973066.3 filed on April 26, 2023, the priority of Chinese patent application No. 202223072717.6 filed on November 18, 2022, the priority of Chinese patent application No. 202222650045.6 filed on September 30, 2022, and the priority of Chinese patent application No. 202222650002.8 filed on September 30, 2022, the entire contents of which are incorporated by reference into this application.

Technical Field

The present disclosure relates to the technical field of household appliances, and in particular to a heat pump water heater.

Background technique

The heat pump water heater can introduce cold water into the water tank from the water inlet, and heat the cold water into hot water through the heat pump device, and then let the hot water flow out through the water outlet for users to use.

Summary of the invention

A heat pump water heater is provided, comprising a water tank assembly and a heat pump device. The water tank assembly comprises a first shell, a water tank body and a condenser. The first shell has a drain port. The water tank body is arranged in the first shell, and the water tank body is configured to store water. The condenser is arranged in the first shell. The heat pump device is arranged on the top of the water tank assembly, and the heat pump device comprises a second shell, an evaporator, a compressor and a throttling assembly. The compressor and the evaporator are arranged in the second shell. The throttling assembly is arranged 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. When the refrigerant flows in the refrigerant circulation loop, the condenser exchanges heat with the water tank body to heat the water in the water tank body. Wherein, the water tank assembly also includes a mounting plate, which is arranged at one end of the first shell close to the heat pump device and is configured to support the heat pump device. The heat pump device also includes a base, which is arranged at one end of the mounting plate away from the water tank body, and the compressor, the evaporator and the throttling assembly are respectively arranged on the base. The mounting plate includes a mounting plate body and a second drain portion, the second drain portion is connected to the mounting plate body, and the second drain portion is communicated with the drain port to discharge condensed water. The base includes a base body and a first drain portion, one end of the first drain portion is connected to the base body, and the other end of the first drain portion is opposite to and communicated with the second drain portion in the axial direction of the heat pump water heater. The heat pump water heater also includes a sealing member, which is arranged between the first drain portion and the second drain portion to seal the gap between the first drain portion and the second drain portion.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a structural diagram of a heat pump water heater according to some embodiments;

FIG2 is a cross-sectional view of a heat pump water heater according to some embodiments;

FIG3 is a partial cross-sectional view of a heat pump water heater according to some embodiments;

FIG4 is a partial structural diagram of a heat pump device and a water tank assembly according to some embodiments;

FIG5 is a structural diagram of the heat pump water heater in FIG4 from another angle;

FIG6 is a structural diagram of a first sub-housing of a heat pump water heater according to some embodiments;

FIG7 is a partial enlarged view of the circle A1 in FIG6;

FIG8 is a partial enlarged view of the circle B in FIG6;

FIG9 is a structural diagram of a second sub-housing of a heat pump water heater according to some embodiments;

FIG10 is a partial enlarged view of the circle C1 in FIG9 ;

FIG11 is a partial enlarged view of the circle D in FIG9 ;

12 is a structural diagram of a mounting plate of a heat pump water heater according to some embodiments;

13 is another structural diagram of a first sub-housing of a heat pump water heater according to some embodiments;

FIG14 is a partial enlarged view of the circle A2 in FIG13;

15 is another structural diagram of a second sub-housing of a heat pump water heater according to some embodiments;

FIG16 is a partial enlarged view of the circle C2 in FIG15;

17 is a cross-sectional view of a housing and a top cover of a heat pump water heater according to some embodiments;

FIG18 is a partial enlarged view of the circle E in FIG17;

FIG19 is a partial enlarged view of the circle F in FIG17;

FIG. 20 is an exploded view of a heat pump water heater according to some embodiments;

FIG. 21 is a structural diagram of a fan assembly and an evaporator according to some embodiments;

FIG. 22 is a top view of a heat pump water heater according to some embodiments;

FIG23 is a partial structural diagram of a heat pump device according to some embodiments;

24 is another side view of a fan assembly and an evaporator according to some embodiments;

FIG. 25 is a structural diagram of a filter assembly according to some embodiments;

FIG. 26 is a structural diagram of a filter assembly and a second housing according to some embodiments;

FIG27 is a structural diagram of a heat pump water heater according to some embodiments;

FIG28 is another structural diagram of a heat pump device according to some embodiments;

FIG29 is another structural diagram of a heat pump device according to some embodiments;

FIG30 is a structural diagram of a water tank assembly according to some embodiments;

FIG31 is a cross-sectional view of the heat pump device shown in FIG29;

FIG32 is a partial enlarged view of the circle G in FIG31;

FIG33 is a partial enlarged view of the circle H in FIG32;

FIG34 is a top view of a seal according to some embodiments;

FIG35 is a cross-sectional view of a seal according to some embodiments;

FIG36 is a structural diagram of a seal according to some embodiments;

FIG37 is a structural diagram of a base according to some embodiments;

FIG38 is a top view of a base according to some embodiments;

Fig. 39 is a cross-sectional view along line I-I of Fig. 38;

FIG40 is a block diagram of a mounting plate according to some embodiments;

FIG41 is a top view of a mounting plate according to some embodiments;

Fig. 42 is a cross-sectional view of Fig. 41 along line J-J;

FIG43 is a top view of a base and water tank assembly according to some embodiments;

Figure 44 is a cross-sectional view of Figure 43 along line K-K.

Detailed ways

Some embodiments of the present disclosure will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present disclosure, rather than all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments provided by the present disclosure are within the scope of protection of the present disclosure.

Unless the context requires otherwise, throughout the specification and claims, the term "comprise" and other forms thereof, such as the third person singular form "comprises" and the present participle form "comprising", are to be interpreted as open, inclusive, that is, "including, but not limited to". In the description of the specification, the terms "one embodiment", "some embodiments", "exemplary embodiments", "example", "specific example" or "some examples" and the like are intended to indicate that specific features, structures, materials or characteristics associated with the embodiment or example are included in at least one embodiment or example of the present disclosure. The schematic representation of the above terms does not necessarily refer to the same embodiment or example. In addition, the specific features, structures, materials or characteristics described may be included in any one or more embodiments or examples in any appropriate manner.

In the following, the terms "first" and "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present disclosure, unless otherwise specified, "plurality" means two or more.

When describing some embodiments, the expressions "coupled" and "connected" and their derivatives may be used. The term "connected" should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly 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 refer to two or more components. The 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.

“At least one of A, B, and C” has the same meaning as “at least one of A, B, or C” and both include the following combinations of A, B, and C: A only, B only, C only, the combination of A and B, the combination of A and C, the combination of B and C, and the combination of A, B, and C.

The use of "adapted to" or "configured to" herein is meant to be open and inclusive language that does not exclude devices adapted or configured to perform additional tasks or steps.

As used herein, "about," "substantially," or "approximately" includes the stated value and an average value that is within an acceptable range of variation from the particular value as determined by one of ordinary skill in the art taking into account the measurements in question and the errors associated with the measurement of the particular quantity (i.e., the limitations of the measurement system).

As used herein, "parallel", "perpendicular", and "equal" include the situations described and situations similar to the situations described, and the range of the similar situations is within the acceptable deviation range, wherein the acceptable deviation range is determined by a person of ordinary skill in the art taking into account the measurement in question and the errors associated with the measurement of a particular quantity (i.e., the limitations of the measurement system). For example, "parallel" includes absolute parallelism and approximate parallelism, wherein the acceptable deviation range of approximate parallelism can be, for example, a deviation within 5°; "perpendicular" includes absolute perpendicularity and approximate perpendicularity, wherein the acceptable deviation range of approximate perpendicularity can also be, for example, a deviation within 5°. "Equal" includes absolute equality and approximate equality, wherein the acceptable deviation range of approximate equality can be, for example, the difference between the two equalities is less than or equal to 5% of either one.

Heat pump water heaters are a new type of water heater that emerged after electric water heaters, gas water heaters and solar water heaters. Heat pump water heaters heat the water in the water tank by absorbing heat from the air. This avoids the problems of electric water heater leakage and dry burning, as well as the possible gas poisoning when using gas water heaters, and overcomes the disadvantage of solar water heaters being greatly affected by the weather. It has the advantages of high efficiency and energy saving, safety and environmental protection, all-weather operation, and convenience of use.

As shown in Figures 1 and 2, the heat pump water heater 100 includes a water tank assembly 1 and a heat pump device 2. The water tank assembly 1 includes a first shell 11, a water tank body 12 and a condenser. The water tank body 12 is disposed in the first shell 11 and is configured to store water. The water tank body 12 has a water inlet 121 and a water outlet 122. For example, the water inlet 121 and the water outlet 122 can be disposed at both ends of the axial direction of the water tank body 12. The water inlet 121 is configured to connect an external pipeline so that cold water can flow into the water tank body 12 through the water inlet 121, and the cold water can flow out of the water tank body 12 through the water outlet 122 after being heated for use by the user.

In some embodiments, the condenser is disposed in the first housing 11 , and the condenser may be a heat-conducting member 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 .

As shown in Figures 1 to 4, the heat pump device 2 is located at the top of the water tank assembly 1. The heat pump device 2 includes a second housing 21, a compressor 22 and an evaporator 23 contained in the second housing 21. The evaporator 23 is configured to absorb heat from the air. The compressor 22 has an air inlet and an exhaust port, the exhaust port of the compressor 22 is connected to one end of the condenser, and the air inlet of the compressor 22 is connected to one end of the evaporator 23.

In some embodiments, the heat pump device 2 further includes a throttling assembly 24. The throttling assembly 24 is connected between the other end of the evaporator 23 and the other 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 can flow in the refrigerant circulation loop, so that the condenser and the water tank body 12 can exchange heat to heat the water in the water tank body 12.

In some embodiments, the heat pump device 2 further includes a fan assembly 25. The fan assembly 25 is disposed on one side of the evaporator 23 and is configured to draw external air into the second housing 21, and to introduce the air inside the second housing 21 into the evaporator 23 to perform heat exchange with the evaporator 23. After the refrigerant inside the evaporator 23 absorbs heat, it returns to the compressor 22 to be compressed again, and the cycle is repeated, and the heat energy in the air is continuously sent to the water, so that the water temperature in the water tank body 12 increases.

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 to control the normal operation of the heat pump water heater 100. The electric control box 26 and the compressor 22 are located on the same side of the evaporator 23 and 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. 4 , the fan assembly 25 and the compressor 22 are respectively located on both sides of the thickness direction of the evaporator 23 (the left and right direction as shown in FIG. 2 ).

When the heat pump water heater 100 is working, the fan assembly 25 is running. Under the action of the fan assembly 25, a large amount of air The air flows through the outer surface of the evaporator 23. The heat in the air is absorbed by the evaporator 23, and the temperature of the air is reduced to become cold air. The cold air is then discharged from the fan assembly 25.

During this process, the refrigerant in the evaporator 23 absorbs heat and vaporizes, and is then sucked into the compressor 22. The compressor 22 compresses the returning low-pressure refrigerant gas into a high-temperature, high-pressure gas, and sends it into the condenser wrapped around the outer wall of the water tank body 12. The heat generated by the high-temperature, 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.

The refrigerant in the condenser is cooled into liquid under the continuous action of pressure, and the liquid flows into the evaporator 23 again after being throttled and cooled by the throttling component 24 (such as an expansion valve). Since the pressure in the evaporator 23 drops suddenly, the liquid refrigerant evaporates rapidly into gas at the evaporator 23 and absorbs a large amount of heat. In this repeated cycle, the heat energy in the air is continuously sent to the water, so that the water temperature in the water tank body 12 increases.

Generally, during the operation of the evaporator 23, condensed water may be generated on the surface of the evaporator 23 and the surface of the volute 251 near the evaporator 23. The condensed water may flow from the heat pump device 2 into the water tank assembly 1 below, and then flow out from the drain port on the first shell 11. In this process, if the seal between the heat pump device 2 and the water tank assembly 1 is poor, it is easy to cause condensed water to seep out from the matching point between the heat pump device 2 and the water tank assembly 1, affecting the normal use of the heat pump water heater 100.

To solve the above problems, some embodiments of the present disclosure provide a heat pump water heater 100, which further includes a seal, which is disposed between the heat pump device 2 and the water tank assembly 1 to seal the gap between the heat pump device 2 and the water tank assembly 1. In this way, condensed water can be prevented from seeping out of the matching portion between the heat pump device 2 and the water tank assembly 1, thereby improving the sealing effect of the heat pump water heater 100.

In some embodiments, as shown in FIG. 2 and FIG. 30 , the water tank assembly 1 further includes a mounting plate 13. The mounting plate 13 is disposed at one axial end of the first housing 11. For example, the mounting plate 13 is disposed at the top of the first housing 11 to facilitate installation of the heat pump device 2. A first accommodating chamber 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 chamber 10.

In some embodiments, as shown in FIGS. 2 to 5 , 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 chamber 20 (i.e., an accommodating chamber), and the compressor 22, the evaporator 23, the throttling assembly 24, the fan assembly 25, and the electric control box 26 are all located in the second accommodating chamber 20.

As shown in FIG1 , the heat pump water heater 100 further includes a display device 27 (eg, a display panel), which is disposed on the second housing 21 . The display device 27 is configured to display the water temperature in the water tank body 12 .

In some embodiments, one of the second housing 21 and the mounting plate 13 is provided with a receiving portion 131, and the other of the second housing 21 and the mounting plate 13 is provided with a clamping portion 215, which is clamped in the receiving portion 131 to connect the second housing 21 and the mounting plate 13. For example, the second housing 21 includes the clamping portion 215, which may be a boss. The mounting plate 13 includes the receiving portion 131, which may be a groove.

In this way, when the display device 27 is installed on the second housing 21, the second housing 21 can be pre-installed on the mounting plate 13 by the cooperation between the engaging portion 215 and the accommodating portion 131, and then the display device 27 is wired, thereby preventing the second housing 21 from falling off from the mounting plate 13 during wiring. In addition, the assembly method is simple, easy to operate, and can improve assembly efficiency.

As shown in FIG12 , the receiving portion 131 is disposed at the outer periphery of the mounting plate 13. The receiving portion 131 is formed by a portion of the mounting plate 13 being recessed toward the central axis of the mounting plate 13. As shown in FIG6 and FIG9 , the engaging portion 215 is disposed on the inner wall surface of the second housing 21 and is located on a side of the second housing 21 adjacent to the mounting plate 13. During assembly, the second housing 21 can be pre-installed on the mounting plate 13 by the engagement of the engaging portion 215 with the receiving portion 131.

In some embodiments, one end of the engaging portion 215 extends toward the central axis of the second housing 21, and the other end of the engaging portion 215 is connected to the second housing 21. The width of the one end of the engaging portion 215 is smaller than the width of the other end, so as to cooperate with the corresponding accommodating portion 131.

In some embodiments, as shown in Figures 2 and 12, the mounting plate 13 includes a mounting plate body 132 and a matching portion 133 connected to each other. The mounting plate body 132 is connected to the first shell 11, the matching portion 133 is arranged on the circumference of the mounting plate body 132 and extends in a direction toward the top of the second shell 21, and the matching portion 133 is formed with an accommodating portion 131.

As shown in Figures 3, 12 and 20, the shape of the mounting plate body 132 is adapted to the shape of the top of the first shell 11 to separate the heat pump device 2 from the water tank body 12, thereby preventing water in the water tank body 12 from entering the second shell 21 and causing a short circuit in the circuit of the heat pump device 2.

The matching portion 133 is located at the edge of the mounting plate body 132 and extends to a side away from the water tank assembly 1. For example, the matching portion 133 extends along the circumference of the mounting plate body 132 and is perpendicular to the mounting plate body 132. In addition, the matching portion 133 is spaced apart from the outer circumference of the mounting plate body 132, so that after the second shell 21 is assembled with the mounting plate 13, the matching portion 133 can be located in the second shell 21, and at this time, the lower end surface of the second shell 21 abuts against the outer circumference of the mounting plate body 132.

As a result, the mounting plate 13 has a simple structure and is easy to process, and can improve the sealing of the connection between the second shell 21 and the mounting plate 13, preventing external liquid from entering the second shell 21 from the connection, thereby playing a waterproof role for the compressor 22 and the like.

As shown in FIGS. 6 to 9 , the second housing 21 includes a first sub-housing 211 and a second sub-housing 212 that are detachably connected. The engaging portion 215 includes a first sub-engaging portion 2111 and a second sub-engaging portion 2121. The first sub-housing 211 is provided with a plurality of first sub-engaging portions 2111, which are arranged at intervals along the circumference of the first sub-housing 211. The second sub-housing 212 is provided with a plurality of second sub-engaging portions 2121, which are arranged at intervals along the circumference of the second sub-housing 212.

The plurality of accommodating portions 131 include a plurality of first sub-accommodating portions 1311 and a plurality of second sub-accommodating portions 1312. During installation, the first sub-engaging portions 2111 are respectively located in the first sub-accommodating portions 1311 to pre-install the first sub-housing 211 on the mounting plate 13. The second sub-engaging portions 2121 are respectively located in the second sub-accommodating portions 1312 to pre-install the second sub-housing 212 on the mounting plate 13.

In some embodiments, the display device 27 is disposed in one of the first sub-housing 211 and the second sub-housing 212. As shown in FIG6 and FIG17, the display device 27 is disposed in the first sub-housing 211. At this time, when the display device 27 is installed on the first sub-housing 211, the first sub-housing 211 can be pre-installed on the mounting plate 13 by the cooperation of the first sub-engaging portion 2111 and the first sub-accommodating portion 1311, and then the display device 27 is wired, so as to prevent the first sub-housing 211 from falling off from the mounting plate 13 during wiring. Finally, the second sub-housing 212 is connected to the first sub-housing 211, so as to provide sufficient space for the wiring operation.

In some embodiments, at least two of the plurality of first sub-engaging portions 2111 located at both ends of the circumference of the first sub-housing 211 have first guide surfaces. At least two of the plurality of second sub-engaging portions 2121 located at both ends of the circumference of the second sub-housing 212 have second guide surfaces.

For example, the at least two first sub-engaging parts 2111 include two first sub-engaging parts 2111, and the first guide surfaces of the two first sub-engaging parts 2111 are arranged opposite to each other. The at least two second sub-engaging parts 2121 include two second sub-engaging parts 2121, and the second guide surfaces of the two second sub-engaging parts 2121 are arranged opposite to each other.

It is understandable that at least two of the plurality of first sub-accommodating portions 1311 have a third guide surface, which contacts the first guide surface. At least two of the plurality of second sub-accommodating portions 1312 have a fourth guide surface, which contacts the second guide surface.

During installation, the first guide surface cooperates with the third guide surface to quickly install the first sub-housing 211 on the mounting plate 13. The second guide surface cooperates with the fourth guide surface to quickly install the second sub-housing 212 on the mounting plate 13. In this way, the assembly efficiency between the housing and the mounting plate 13 is improved.

In some embodiments, along the radial direction of the mounting plate 13, the plurality of second sub-engaging portions 2121 on the second sub-housing 212 are respectively located at two ends of the circumferential direction of the second sub-housing 212. Such an arrangement can ensure that there is sufficient space in the middle of the second sub-housing 212, so as to facilitate the installation of the larger fan assembly 25 to the side of the second accommodating cavity 20 adjacent to the second sub-housing 212, so as to make full use of the space in the second housing 21, so as to make the arrangement of the heat pump device 2 compact and reduce the overall volume of the heat pump device 2.

In some embodiments, the second housing 21 further includes at least one third sealing rib 216. The third sealing rib 216 is disposed on the inner side wall of the second housing 21 and is located on a side of the second housing 21 adjacent to the mounting plate 13. For example, the third sealing rib 216 is located between two adjacent engaging portions 215 of the plurality of engaging portions 215. During assembly, the third sealing rib 216 abuts against the outer circumferential surface of the mating portion 133.

Thus, the sealing between the mounting plate 13 and the second shell 21 can be further improved, and foreign impurities or liquids can be prevented from entering the second shell 21 , thereby ensuring the cleanliness of the interior of the second shell 21 .

In some embodiments, as shown in FIG18 , at least one first limiting portion 136 is disposed on the outer circumference of the matching portion 133, that is, the first limiting portion 136 is disposed on a side of the matching portion 133 adjacent to the second housing 21. The third sealing rib 216 abuts against the first limiting portion 136, and the first limiting portion 136 can be supported on the corresponding third sealing rib 216.

In some embodiments, the at least one third sealing rib 216 includes a plurality of third sealing ribs 216, and the plurality of third sealing ribs 216 are arranged at intervals along the circumference of the inner side wall of the second shell 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 along the circumference of the mounting plate 13.

In this way, the cooperation between the first limiting portion 136 and the third sealing rib 216 can prevent the second housing 21 and the mounting plate 13 from moving relative to each other in the up-down direction, and prevent the mounting plate 13 from being out of cooperation with the second housing 21. In addition, a waterproof effect can be further achieved.

In some embodiments, a buckle 2113 is provided on one of the first sub-shell 211 and the second sub-shell 212, and a second limiting portion 134 is provided on the mounting plate 13, and the buckle 2113 abuts against the second limiting portion 134. As shown in FIGS. 6 and 8 , two buckles 2113 are provided on one end of the inner wall surface of the first sub-shell 211 adjacent to the mounting plate 13. The two buckles 2113 are respectively located at two ends of the circumference of the first sub-shell 211, and the two buckles 2113 are located on a side of the first sub-engaging portion 2111 away from the third sealing rib 216.

As shown in FIG12 , two second limiting portions 134 are provided on one side of the matching portion 133 adjacent to the center of the mounting plate body 132, and the two second limiting portions 134 can be opposite to each other along the radial direction of the mounting plate body 132. During installation, the first sub-engaging portion 2111 and the second sub-engaging portion 2121 are respectively engaged in the corresponding accommodating portion 131, and the buckle 2113 is in contact with the side wall of the second limiting portion 134. In this way, the second housing 21 can be prevented from rotating around the central axis of the mounting plate 13, so that the second housing 21 can be firmly fixed on the mounting plate 13.

As shown in Figures 6 to 8, the first sub-housing 211 further includes a first mounting post 2115. As shown in Figures 9 to 11, the second sub-housing 212 further includes a second mounting post 2125, and the second mounting post 2125 is arranged corresponding to the first mounting post 2115. Both ends of the fastener are connected to the first mounting post 2115 and the second mounting post 2125, respectively.

During installation, after the first sub-housing 211 and the second sub-housing 212 are connected, the two ends of the fastener extend into the first mounting post 2115 and the second mounting post 2125. Thus, 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 prevented from being out of engagement.

In some embodiments, the first subshell 211 is provided with at least one first connection portion 213, and the second subshell 212 is provided with at least one second connection portion 214, and the second connection portion 214 cooperates with the first connection portion 213 to improve the waterproof performance of the connection between the first subshell 211 and the second subshell 212.

For example, one of the first connection portion 213 and the second connection portion 214 has a protrusion, and the other of the first connection portion 213 and the second connection portion 214 has a groove.

The following uses the example that the first connection portion 213 has a groove and the second connection portion 214 has a protrusion to describe the structures of the second connection portion 214 and the first connection portion 213 .

As shown in FIGS. 13 to 16 , the first connection portion 213 is provided at the edge of the first sub-housing 211 and extends along the axial direction of the first sub-housing 211. The second connection portion 214 is provided at the edge of the second sub-housing 212 and extends along the axial direction of the second sub-housing 212. During installation, the second connection portion 214 is fitted into the first connection portion 213 so that the end surface of the first sub-housing 211 fits with the end surface of the second sub-housing 212, thereby reducing the gap at the connection between the first sub-housing 211 and the second sub-housing 212, thereby improving the sealing performance of the connection between the first sub-housing 211 and the second sub-housing 212.

In this way, external liquid (such as water) is prevented from entering the second housing 21 through the above-mentioned connection, and waterproof protection is achieved for 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. In addition, the 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.

As shown in FIG14 , the first connection portion 213 includes a first section 2131 and a second section 2132. The first section 2131 extends along the axial direction of the first housing 11. One end of the second section 2132 is connected to the first section 2131, and the other end of the second section 2132 extends toward the center of the first housing 11.

As shown in FIG16 , the second connecting portion 214 includes a fourth section 2141 and a fifth section 2142. The fourth section 2141 extends along the axial direction of the first housing 11, and the fourth section 2141 fits in the first section 2131. One end of the fifth section 2142 is connected to the fourth section 2141, and the other end of the fifth section 2142 extends in a direction toward the center of the first housing 11, and the fifth section 2142 fits in the second section 2132.

In some embodiments, the second section 2132 extends horizontally away from the first section 2131, and the first connection portion 213 forms a first bend. The fifth section 2142 extends horizontally away from the fourth section 2141, and the second connection portion 214 forms a second bend.

Therefore, when the second connection part 214 is embedded in the first connection part 213, the first connection part 213 and the second connection part 214 can further achieve the sealing of the first sub-shell 211 and the second sub-shell 212, making it difficult for external liquid to penetrate into the second shell 21, thereby enhancing the waterproof effect of the heat pump water heater 100.

17 and 19, in some embodiments, the second housing 21 further includes a top cover 3, which is disposed on a side (such as the 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 section 31 and a top cover body 32 connected to each other, the top cover body 32 is opposite to the top of the second housing 21, the top cover extension section 31 extends downwardly in a direction away from the top cover body 32, and the end surface of the free end of the top cover extension section 31 (i.e., the bottom wall of the top cover 3) stops against the outer side wall of the second section 2132.

Thus, the top cover 3 covers the upper part of the fitting point of the first connection part 213 and the second connection part 214, which can protect the first sub-shell 211 and the second sub-shell 212, so that the upper part of the fitting point of the first connection part 213 and the second connection part 214 has double waterproof performance, which is beneficial to enhance the waterproof effect of the heat pump water heater 100.

In some embodiments, as shown in FIGS. 14 and 16 , the first connection 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 connection 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, and the other end of the sixth segment 2143 extends obliquely in a direction away from the end of the second connection portion 214, and the sixth segment 2143 fits in the third segment 2133.

In some embodiments, the third section 2133 extends upwardly and obliquely in a direction away from the second section 2132. The length of the third section 2133 may be less than the distance from the top cover body 32 to the second section 2132. Similarly, the sixth section 2143 extends upwardly and obliquely in a direction away from the fifth section 2142. At this time, the ends of the first connecting portion 213 and the second connecting portion 214 adjacent to the top cover 3 have a plurality of bent portions. Thus, the sealing of the first sub-shell 211 and the second sub-shell 212 is further achieved, and the waterproof performance of the second shell 21 is enhanced.

It is understandable that the mounting plate 13 is located between the first housing 11 and the second housing 21. In some embodiments, the side wall of the mounting plate 13 extends into the second housing 21. As shown in FIGS. 17 and 18, the mating 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. During installation, the second housing 21 is located outside the side wall of the mounting plate 13, so that the lower part of the first connecting portion 213 and the second connecting portion 214 has a double waterproof performance, which enhances the waterproof effect of the heat pump water heater 100.

In some embodiments, referring to FIG. 18 , along the axial direction of the first shell 11, the free end of the side wall of the mounting plate 13 (i.e., the top end of the matching 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 between the first sub-shell 211 and the second sub-shell 212, the end surface of the free end of the side wall of the mounting plate 13 is located above the free end of the first segment 2131. At this time, the free end of the side wall of the mounting plate 13 partially overlaps with the free end of the first segment 2131 in the axial direction of the second shell 21. Even if external liquid penetrates into the second shell 21 from the lower part of the matching place between the first connecting portion 213 and the second connecting portion 214, the side wall of the mounting plate 13 can prevent the external liquid from further penetrating into the second shell 21, thereby further enhancing the waterproof effect of the heat pump water heater 100.

In some embodiments, there are two first connection parts 213 and two second connection parts 214, the two first connection parts 213 are respectively located at two ends of the circumference of the first sub-shell 211, and the two second connection parts 214 are respectively located at two ends of the circumference of the second sub-shell 212. The two first connection parts 213 cooperate with the two second connection parts 214 to further ensure the waterproof effect of the connection between the first sub-shell 211 and the second sub-shell 212.

In some embodiments, as shown in FIG. 2 and FIG. 20 , the top cover 3 has a first air inlet 301 and a first air outlet 302 , and both the first air inlet 301 and the first air outlet 302 are connected to the second accommodating cavity 20 .

In some embodiments, as shown in Figures 2 to 4, 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 are connected to the fan assembly 25, and the air entering the interior of the second shell 21 from the first air inlet 301 is suitable for flowing through the evaporator 23 and exchanging heat with the evaporator 23, and then being discharged from the first air outlet 302 through the fan assembly 25.

In some embodiments, the first air inlet 301 and the first air outlet 302 are arranged 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 arranged opposite to each other in the radial direction of the top cover 3. In this way, the first air inlet 301 can be prevented from being interfered with by components such as the electric control box 26, and the air intake space and air intake efficiency can be increased. In addition, 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 fully exchanges heat with the compressor 22, the electric control box 26, the evaporator 23, etc.

As shown in FIG. 22 , the angle between the line connecting the center of the first air inlet 301 and the center of the first air outlet 302 and the center of the top cover 3 is γ, and 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 the orthographic projection of the first line segment and the second line segment on the top cover 3 along the axial direction of the second shell 21 is γ.

It is understandable that the smaller the angle γ is, the closer the first air inlet 301 is to the first air outlet 302. If the angle γ is less than 80°, it is easy to cause the first air inlet 301 and the first air outlet 302 to interfere with each other, affecting the air intake and air outlet effects of the heat pump water heater 100. It may also make the angle between the first air inlet 301 and the first air outlet 302 and the second air inlet 2511 smaller, increasing the resistance of air flow inside the second shell 21. In addition, it is not convenient to set components such as the electric control box 26 and the compressor 22 inside the second shell 21.

Since the air entering the second housing 21 from the first air inlet 301 passes through the evaporator 23, then passes through the second air inlet 2511 and the second air outlet 2512, and finally flows out from the first air outlet 302. Therefore, when the center position of the second air inlet 2511 is fixed, the larger the angle γ is, the shorter the path of the air flowing inside the second housing 21 is, and the weaker the heat dissipation effect on the compressor 22 and the electric control box 26 in the second housing 21 is. In addition, the residence time of the air inside the second housing 21 is shortened, which reduces the evaporation efficiency of the evaporator 23.

If the angle γ is equal to 180°, the first air inlet 301 and the first air outlet 302 are symmetrically arranged about the center of the second housing 21. At this time, the first air inlet 301 may be partially located above the electric control box 26, resulting in a small air inlet space, and the air entering the second housing 21 from the first air inlet 301 is disturbed by the electric control box 26 and cannot smoothly reach the location of the evaporator 23, thereby causing air loss.

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

Therefore, by limiting the angle γ between the first air inlet 301 and the first air outlet 302, on the one hand, the air intake effect of the first air inlet 301 can be guaranteed, thereby ensuring the air volume required for the operation of the evaporator 23, so as to improve the heat exchange efficiency of the evaporator 23. On the other hand, the air outlet effect of the first air outlet 302 can be guaranteed, which is conducive to increasing the flow rate of air inside the second housing 21, so that the air can quickly take away the heat generated by the operation of the electric control box 26 and the compressor 22, etc., and effectively reduce the energy consumption of the heat pump water heater 100.

In some embodiments, as shown in FIG. 20 and FIG. 22 , the first air inlet 301 and the compressor 22 are arranged opposite to each other along the axial direction of the second housing 21, and the first air inlet 301 and the compressor 22 are arranged at intervals. That is, the first air inlet 301 and the compressor 22 are opposite to each other in the axial direction of the second housing 21. The air entering the second housing 21 from the first air inlet 301 first passes through the compressor 22 and then flows to the evaporator 23 and the electric control box 26. In this way, the electric control box 26 can avoid blocking the first air inlet 301, increase the air intake of the second housing 21, and achieve cooling of the compressor 22.

As shown in Figures 20, 21 and 29, the fan assembly 25 includes a volute 251, a volute extension 252 and a wind wheel 255. The volute 251 is arranged on a 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. The second air inlet 2511 is arranged facing the evaporator 23. The second air outlet 2512 is opposite to and connected to the first air outlet 302 along the axial direction of the second shell 21. The air entering the interior of the second shell 21 from the first air inlet 301 is suitable for flowing through the second air inlet 2511 and entering the fan assembly 25, and then discharged from the second air outlet 2512 and the first air outlet 302.

In some embodiments, as shown in Figures 21 and 22, one end of the volute extension 252 is connected to the second air outlet 2512, and the other end of the volute extension 252 is opposite to the first air outlet 302. From the second air outlet 2512 toward the direction of the first air outlet 302 (i.e., the up and down direction), the volute extension 252 is inclined toward the direction close to the evaporator 23.

In some embodiments, the wind wheel 255 is disposed in the volute 251. The air entering the second shell 21 from the first air inlet 301 flows through the evaporator 23 and exchanges heat with the evaporator 23, then 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.

In some embodiments, the volute extension 252 is tilted toward the side where the evaporator 23 is located. On the one hand, the volute extension 252 can form an escape space on the other side away from the evaporator 23, which is convenient for the installation of the second shell 21. On the other hand, part of the space around the evaporator 23 can be used to make the internal structure of the heat pump device 2 more compact, and facilitate the connection of the second air outlet 2512 with the first air outlet 302 to increase the air volume at the first air outlet 302.

In some embodiments, as shown in FIGS. 22 to 24 , in the width direction of the evaporator 23, the second air inlet 2511 is located on a side of the evaporator 23 close to the electric control box 26. In this way, the second air inlet 2511 and the electric control box 26 are located on the evaporator 23. 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.

In this way, it is ensured that under the action of the fan assembly 25, the air inside the second housing 21 flows from the side of the evaporator 23 close to the electric control box 26 (such as the S2 side as shown in FIG. 23) to the second air inlet 2511, and the air is prevented from flowing from the side of the evaporator 23 close to the compressor 22 (such as the S1 side as shown in FIG. 23) to the second air inlet 2511. In this way, the area through which the air flows through the evaporator 23 is increased, and the wind receiving area of the evaporator 23 is increased. In addition, it can ensure that the air is in full contact with the electric control box 26, realize the heat dissipation of the electric control box 26, and thus ensure the working efficiency of the electric control box 26.

As shown in Fig. 24, the center of the second air inlet 2511 is located on one side of the first center plane adjacent to the mounting plate 13. The first center plane is the center plane in the height direction of the evaporator 23, and the first center plane extends along the center axis direction of the evaporator 23.

It should be noted that the height direction of the evaporator 23 is the up-down direction shown in FIG. 24 , and the width direction of the evaporator 23 is the left-right direction shown in FIG. 24 .

Therefore, setting the center of the second air inlet 2511 below the first center plane of the evaporator 23 and close to the electrical control box 26 can extend the flow path of air from the first air inlet 301 to the first air outlet 302, fully increase the wind receiving area of the evaporator 23, and thus increase the heat exchange efficiency of the evaporator 23.

As shown in FIG. 23 , the distance between the electric control box 26 and the evaporator 23 gradually increases in the direction toward the compressor 22, and an angle θ is formed between the electric control box 26 and the evaporator 23, where θ satisfies: 15≤θ≤30°. The first air inlet 301 is opposite to the compressor 22, and after the air enters the second housing 21 from the first air inlet 301, it flows toward the evaporator 23 and the space between the evaporator 23 and the electric control box 26, so as to facilitate the heat dissipation of the electric control box 26.

It is understandable that the smaller the angle θ is, the smaller the air volume between the electric control box 26 and the evaporator 23 is, which may result in a reduction in the heat dissipation capacity of the electric control box 26 and a weakening of the heat exchange capacity of the evaporator 23. The larger the angle θ between the electric control box 26 and the evaporator 23 is, the air flowing to the evaporator 23 will be blocked by the electric control box 26, and it is easier to generate turbulence on the surface of the electric control box 26, thereby causing air loss, reducing the air volume of the evaporator 23, and further affecting the heat exchange effect of the evaporator 23.

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°. Therefore, by limiting the angle θ between the electric control box 26 and the evaporator 23, the air intake volume of the evaporator 23 close to the electric control box 26 can be increased, the heat exchange capacity and 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, thereby improving the cooling effect of the electric control board in the electric control box 26 and facilitating the heat dissipation of the electric control box 26.

As shown in Figures 20 and 21, the volute 251 includes a third shell 2513 and a fourth shell 2514 connected to each other along the central axis direction of the wind wheel 255. The evaporator 23 includes a pipeline for evaporation and a side plate for installing the pipeline. The third shell 2513 is connected to the side plate of the evaporator 23, and the third shell 2513 and the side plate are integrated. The fourth shell 2514 is connected to the side of the third shell 2513 away from the evaporator 23. As a result, the third shell 2513 and the side plate of the evaporator 23 are integrally formed, which can reduce the number of components of the heat pump device 2, which is conducive to improving the installation efficiency of the volute 251, and improves the sealing between the volute 251 and the evaporator 23, which is conducive to increasing the air intake of the second air inlet 2511.

As shown in Figures 25 and 26, the heat pump water heater 100 further includes a filter assembly 4. The filter assembly 4 is disposed in the second housing 21, and the filter assembly 4 is opposite to the first air inlet 301. The filter assembly 4 satisfies one of the following conditions: the filter assembly 4 is detachably connected to the second housing 21, or the filter assembly 4 includes a filter 41 and a bracket 42, the filter 41 is detachably mounted on the bracket 42, and the bracket 42 is connected to the second housing 21.

In the case where the filter assembly 4 is detachably connected to the second housing 21, a mounting groove may be formed on the side wall of the second housing 21 to facilitate installation and removal of the filter assembly 4 and improve installation efficiency. The filter assembly 4 as a whole may be assembled to the second housing 21 along the mounting groove. When the filter assembly 4 needs to be replaced, the filter assembly 4 as a whole is removed along the mounting groove. In this way, the filter assembly 4 and the second housing 21 may be manufactured separately, which can reduce the difficulty of processing.

In the case where the filter assembly 4 includes a filter 41 and a bracket 42, the filter 41 is detachably mounted on the bracket 42, and the bracket 42 can be integrally formed with the second housing 21 to improve the structural strength of the bracket 42. When the filter 41 needs to be replaced, the filter 41 is removed along the bracket 42 to facilitate replacement of the filter 41, thereby reducing the cost of subsequent use and maintenance.

In some embodiments, as shown in FIG. 20 , the heat pump device 2 further comprises a base 28, which is disposed on a side of the mounting plate 13 away from 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 They are respectively arranged on one side (such as the upper side) of the base 28 away from the water tank assembly 1. The base 28 is connected to the water tank assembly 1 to complete the assembly of the heat pump device 2 and the water tank assembly 1.

As shown in Fig. 31, Fig. 32 and Fig. 39, the base 28 includes a base body 280 and a first drain portion 281, and one end of the first drain portion 281 is connected to the base body 280. Condensed water generated by the heat pump device 2 can be drained from the first drain portion 281.

In some embodiments, as shown in FIG. 32, FIG. 41 and FIG. 42, the mounting plate 13 further includes a second drainage portion 137, and the second drainage portion 137 is connected to the mounting plate body 132. The other end of the first drainage portion 281 is relatively connected to the second drainage portion 137 in the axial direction of the heat pump water heater 100 (the up and down direction as shown in FIG. 31). In this way, during the operation of the evaporator 23, condensed water generated on the surfaces of the evaporator 23, the fan assembly 25 and other components can be gathered by the base body 280 to the first drainage portion 281, and then discharged from the second drainage portion 137.

As shown in Fig. 27, Fig. 43 and Fig. 44, the water tank assembly 1 further comprises a drain pipe 111 and a drain port 112, and the drain port 112 is provided at one side of the first housing 11. The first drain portion 281, the second drain portion 137, the drain pipe 111 and the drain port 112 are sequentially connected to form a drain channel, and the condensed water generated by the heat pump water heater 100 can be discharged from the drain port 112 via the drain channel.

In some embodiments, the heat pump water heater 100 further includes a seal 50, which is disposed between the first drainage portion 281 and the second drainage portion 137 to seal the gap between the first drainage portion 281 and the second drainage portion 137. In this way, condensed water can be prevented from seeping out of the gap between the first drainage portion 281 and the second drainage portion 137, thereby improving the sealing effect of the heat pump water heater 100. In addition, the seal 50 has a simple structure and is easy to assemble, which can improve the production efficiency and assembly efficiency of the heat pump water heater 100.

In some embodiments, as shown in FIG. 31 and FIG. 32 , in the water flow direction (i.e., the flow direction of the condensed water), the cross-sectional area of the first drain portion 281 tends to decrease. That is, along the up-down direction as shown in FIG. 31 , the cross-sectional area of the first drain portion 281 tends to decrease. The top end of the first drain portion 281 is connected to the base body 280 to receive the condensed water. The bottom end of the first drain portion 281 is connected to the second drain portion 137 to discharge the condensed water.

Such a configuration can make the top opening area of the first drainage portion 281 larger than the bottom opening area, so that the condensed water can be fully gathered in the first drainage portion 281. In addition, since the cross-sectional area of the first drainage portion 281 along the water flow direction tends to decrease, when the condensed water flow rate remains unchanged, the condensed water on the downstream side of the first drainage portion 281 can be subjected to a greater vertical component force, so that the flow rate of the condensed water becomes faster, so that the condensed water can smoothly flow through the bottom end of the first drainage portion 281, the sealing member 50 and the second drainage portion 137, and be discharged from the heat pump device 2.

In some embodiments, as shown in FIG. 32 and FIG. 44 , the second drain portion 137 further includes a first connection portion 1371 and a second connection portion 1372. One end of the second connection portion 1372 is connected to the first drain portion 281, and the other end of the second connection portion 1372 is connected to the drain port 112 through the drain pipe 111. The second connection portion 1372 extends along the axial direction of the heat pump water heater 100, and the second connection portion 1372 has a drain hole 1373, so that the condensed water flowing out of the first drain portion 281 can flow into the drain pipe 111 through the drain hole 1373 and be discharged from the drain port 112.

In some embodiments, the first connection portion 1371 is disposed on one side of the second connection portion 1372 close to the first drainage portion 281 and extends along the circumference of the second connection portion 1372. One end of the first connection portion 1371 extends toward the base body 280 and is connected to the mounting plate body 132, and the other end of the first connection portion 1371 is connected to the second connection portion 1372. In the direction from the one end to the other end (i.e., the water flow direction), the cross-sectional area of the first connection portion 1371 tends to decrease to match the first drainage portion 281.

32 , the seal 50 includes a seal body 51, which is disposed between the first drainage portion 281 and the first connection portion 1371. In the water flow direction, the cross-sectional area of the seal body 51 tends to decrease to seal the gap between the first drainage portion 281 and the first connection portion 1371.

In some embodiments, as shown in FIGS. 32 to 36 , the seal 50 further includes a first ring portion 52 and a second ring portion 53. The first ring portion 52 is connected to one end (such as the top end) of the seal body 51 close to the base body 280, and extends in a direction away from the central axis of the seal body 51. The outer periphery of the one end of the first drain portion 281 is supported on the outer periphery of the one end of the first connection portion 1371 through the first ring portion 52. That is, the top outer periphery of the first drain portion 281 is supported on the top outer periphery of the first connection portion 1371 through the first ring portion 52. The first ring portion 52 is configured to seal the gap between the top outer periphery of the first drain portion 281 and the top outer periphery of the first connection portion 1371.

The second ring portion 53 is connected to one end (such as the bottom end) of the seal body 51 close to the second connection portion 1372 and is disposed along the seal body 51. The second ring portion 53 extends in the direction of the central axis of the seal body 51. The other end of the first drain portion 281 is supported on the inner periphery of the other end of the first connection portion 1371 through the second ring portion 53. That is, the bottom end of the first drain portion 281 is supported on the inner periphery of the bottom end of the first connection portion 1371 through the second ring portion 53. The second ring portion 53 is configured to seal the gap between the bottom end of the first drain portion 281 and the inner periphery of the bottom end of the first connection portion 1371.

It should be noted that in FIG32 , the side away from the central axis of the second connection part 1372 is the outer side, and the end close to the central axis of the second connection part 1372 is the inner side. The inner periphery of the bottom end of the first connection part 1371 is the outer periphery of the top end of the second connection part 1372.

Some embodiments of the present disclosure are provided with a first ring portion 52 and a second ring portion 53 according to the shape contours of the first drain portion 281 and the first connecting portion 1371, so that the seal 50 can tightly fill the gap between the first drain portion 281 and the first connecting portion 1371, which can further improve the waterproof performance of the fitting point between the first drain portion 281 and the second drain portion 137.

As shown in FIG33 , the base 28 further includes a first sealing rib 282, which is disposed at the outer periphery of the top end of the first drainage portion 281. The first sealing rib 282 cooperates with the first ring portion 52 along the outer periphery of the top end of the first drainage portion 281, and the first sealing rib 282 can limit the displacement of the first ring portion 52 from the circumferential direction, thereby improving the stability of the sealing member 50. For example, the first sealing rib 282 and the first ring portion 52 are interference fit.

As shown in FIG33 , the mounting plate 13 further includes a second sealing rib 138, which is disposed on the inner periphery of the bottom end of the first connecting portion 1371. The second sealing rib 138 cooperates with the second ring portion 53 along the inner periphery of the bottom end of the first connecting portion 1371, and the second sealing rib 138 can limit the displacement of the second ring portion 53 from the circumferential direction, thereby improving the stability of the sealing member 50. For example, the second sealing rib 138 and the second ring portion 53 are interference fit.

In some embodiments, as shown in FIG. 28 and FIG. 38 , the base 28 further includes a first water receiving groove 283, and the first water receiving groove 283 is arranged opposite to the evaporator 23, for example, the first water receiving groove 283 is arranged below the evaporator 23. In addition, the first water receiving groove 283 is connected to the first drainage portion 281. When the evaporator 23 absorbs the heat of the external air, the water vapor in the external air is liquefied into condensed water after approaching the evaporator 23, and the condensed water flows into the first water receiving groove 283 along the evaporator 23, and is guided by the first water receiving groove 283 and merged into the first drainage portion 281, and then flows out from the first drainage portion 281, so that the discharge efficiency of the condensed water generated on the surface of the evaporator 23 can be improved.

As shown in FIG. 28 , FIG. 29 and FIG. 38 , the base 28 further includes a second water receiving groove 284 and a water guide groove 286. The second water receiving groove 284 is arranged opposite to the fan assembly 25, for example, the second water receiving groove 284 is arranged below the fan assembly 25. The second water receiving groove 284 is connected to the first drainage portion 281 through the water guide groove 286. Since the fan assembly 25 is adjacent to the evaporator 23, condensed water will also be generated on the surface of the fan assembly 25 during the operation of the evaporator 23. The condensed water on the surface of the fan assembly 25 flows into the second water receiving groove 284 along the volute 251, and is guided by the second water receiving groove 284 to flow into the first drainage portion 281, and then flows out from the first drainage portion 281, so that the discharge efficiency of the condensed water on the surface of the fan assembly 25 can be improved.

As shown in Fig. 28 and Fig. 38, the base 28 further includes a drainage groove 285, one end of which is connected to the first water receiving groove 283, and the other end of which is connected to the first drainage portion 281. In this way, the condensed water on the surface of the evaporator 23 slides down to the first water receiving groove 283, and the condensed water on the surface of the volute 251 slides down to the second water receiving groove 284. The condensed water in the first water receiving groove 283 and the second water receiving groove 284 converge and then flow into the first drainage portion 281 through the drainage groove 285, thereby improving the discharge efficiency of the condensed water.

In some embodiments, in the direction from the one end of the drain groove 285 to the other end, the width of the orthographic projection of the drain groove 285 on the base 28 tends to decrease. Therefore, the width of the orthographic projection of the one end of the first water receiving groove 283 on the base 28 is large, which is conducive to collecting condensed water. As the condensed water flows, the width of the orthographic projection of the drain groove 285 on the base 28 tends to decrease, which is conducive to increasing the external force on the condensed water at the other end of the drain groove 285 and improving the flow rate of the condensed water. In addition, the other end is connected to the inlet of the first drainage portion 281, which is conducive to the full discharge of the condensed water.

In some embodiments, the height of the drainage groove 285 in the axial direction of the heat pump water heater 100 tends to decrease from the one end to the other end. That is, from the one end to the other end, the drainage groove 285 is inclined toward the water tank body 12. The height of the first drainage portion 281 is lower than the heights of the first water receiving groove 283 and the second water receiving groove 284. In this way, the condensed water in the first water receiving groove 283 and the second water receiving groove 284 can be gathered along the drainage groove 285 to the first drainage portion 281, thereby completing the gathering and discharge of the condensed water at various locations on the base 28.

In some embodiments, the seal 50 is an integrally formed rubber seal. Compared with the split assembly, this arrangement can make the seal 50 faster to form, more stable overall, more plastic, and more convenient to assemble. In addition, the seal 50 is made of rubber material, and since rubber has excellent elasticity, wear resistance and water resistance, this can improve the waterproofness and installation convenience of the seal 50.

In some embodiments, as shown in FIG37 , a plurality of first guide portions 287 are provided on the base 28. As shown in FIG40 , a plurality of second guide portions 139 are provided on the mounting plate 13. The plurality of first guide portions 287 cooperate with the plurality of second guide portions 139. Such a configuration facilitates the assembly and positioning of the base 28 and the mounting plate 13, thereby improving the convenience and accuracy of assembly of the base 28 and the mounting plate 13.

Those skilled in the art will appreciate that the disclosure scope of the present invention is not limited to the above specific embodiments, and certain elements of the embodiments may be modified and replaced without departing from the spirit of the present application. The scope of the present application is limited by the appended claims.

Claims

A heat pump water heater, comprising:

A water tank assembly, the water tank assembly comprising:

a first shell, the first shell having a drain port;

a water tank body, disposed in the first housing, the water tank body being configured to store water; and

a condenser, disposed in the first shell; and

A heat pump device, the heat pump device is arranged on the top of the water tank assembly, and the heat pump device comprises:

a second shell;

A compressor is disposed in the second housing;

an evaporator disposed in the second shell; and

A throttling assembly is provided between the evaporator and the condenser. The compressor, the condenser, the throttling assembly and the evaporator are sequentially connected to form a refrigerant circulation loop. When the refrigerant flows in the refrigerant circulation loop, the condenser exchanges heat with the water tank body to heat the water in the water tank body.

The water tank assembly further includes a mounting plate, which is disposed at one end of the first shell close to the heat pump device and is configured to support the heat pump device;

The heat pump device further comprises a base, which is arranged on a side of the mounting plate away from the water tank body, and the compressor, the evaporator and the throttling assembly are respectively arranged on the base; wherein,

The mounting plate comprises a mounting plate body and a second drainage portion, wherein the second drainage portion is connected to the mounting plate body and communicates with the drainage port to discharge condensed water;

The base comprises a base body and a first drainage portion, one end of the first drainage portion is connected to the base body, and the other end of the first drainage portion is opposite to and connected to the second drainage portion in the axial direction of the heat pump water heater;

The heat pump water heater further includes a sealing member disposed between the first drain portion and the second drain portion to seal a gap between the first drain portion and the second drain portion.
The heat pump water heater according to claim 1, wherein in the flow direction of the condensed water, the cross-sectional area of the first drainage portion tends to decrease;

The second drainage part comprises:

a second connection portion, one end of which is in communication with the first drainage portion, and the other end of which is in communication with the drainage port; and

A first connection portion is located on a side of the second connection portion close to the base body; one end of the first connection portion extends toward the base body, and the other end of the first connection portion is connected to the second connection portion; in the direction from the one end to the other end, the cross-sectional area of the first connection portion tends to decrease so as to cooperate with the first drainage portion;

The seal includes a seal body, which is arranged between the first drain portion and the first connecting portion; in the flow direction of the condensed water, the cross-sectional area of the seal body tends to decrease to seal the gap between the first drain portion and the first connecting portion.
The heat pump water heater according to claim 2, wherein the sealing member further comprises:

a first ring portion, the first ring portion being connected to one end of the seal body close to the base body and extending in a direction away from the central axis of the seal body; an outer periphery of the one end of the first drainage portion being supported on an outer periphery of the one end of the first connection portion through the first ring portion; and

A second ring portion, wherein the second ring portion is connected to one end of the seal body close to the second connection portion and extends in a direction close to the central axis of the seal body; the other end of the first drainage portion is supported on the inner periphery of the other end of the first connection portion through the second ring portion.
The heat pump water heater according to claim 3, wherein the base further comprises a first sealing rib, the first sealing rib is arranged on the outer periphery of the one end of the first drainage portion, and the first sealing rib cooperates with the first ring portion.
The heat pump water heater according to claim 3 or 4, wherein the mounting plate further comprises a second sealing rib, the second sealing rib being arranged on the inner periphery of the other end of the first connecting portion, the second sealing rib being matched with the second ring portion.
The heat pump water heater according to any one of claims 1 to 5, wherein the base further comprises a first water receiving tank, the first water receiving tank is arranged opposite to the evaporator, and the first water receiving tank is connected to the first drainage portion.
The heat pump water heater according to claim 6, further comprising a fan assembly, the fan assembly being disposed on one side of the evaporator and configured to allow external air to enter the evaporator to exchange heat with the evaporator;

The base further includes a second water receiving trough, the second water receiving trough is arranged opposite to the fan assembly, and the second water receiving trough is communicated with the first drainage portion.
The heat pump water heater according to claim 6 or 7, wherein the base further comprises a drainage groove, one end of which is connected to the first water receiving groove, and the other end of which is connected to the first drainage portion; wherein in the direction from the one end to the other end, the width of the positive projection of the drainage groove on the base body tends to decrease.
The heat pump water heater according to any one of claims 1 to 8, wherein the sealing member is an integral member;

The base further includes a first guide portion, and the mounting plate further includes a second guide portion, and the first guide portion cooperates with the second guide portion to connect the base and the mounting plate.
The heat pump water heater according to any one of claims 1 to 9, further comprising:

an electric control box, the electric control box and the compressor being located at the one side of the evaporator, the electric control box being coupled to the compressor; and

a fan assembly, the fan assembly being located on another side of the evaporator opposite to the one side;

The second shell includes a top cover, the top cover is formed with a first air inlet and a first air outlet, the first air inlet is located on the one side of the evaporator and is arranged opposite to the compressor; the first air outlet is located on the other side of the evaporator and is connected to the fan assembly; the airflow is suitable for entering the heat pump device through the first air inlet and exchanging heat with the evaporator, and then being discharged from the first air outlet through the fan assembly; wherein,

The first air inlet and the first air outlet are arranged non-centrally symmetrically with respect to the center of the top cover.
The heat pump water heater according to claim 10, wherein the angle between a first line connecting the center of the first air inlet and the center of the top cover and a second line connecting the center of the first air outlet and the center of the top cover is γ, wherein γ satisfies: 80°≤γ＜180°.
The heat pump water heater according to claim 10 or 11, wherein the fan assembly includes a second air inlet and a second air outlet, the second air inlet is arranged toward the evaporator; the second air outlet and the first air outlet are opposite and connected along the axial direction of the second shell; wherein, in the width direction of the evaporator, the center of the second air inlet is located on the side of the evaporator close to the electrical control box; in the height direction of the evaporator, the center of the second air inlet is located on the side of the evaporator close to the water tank body.
The heat pump water heater according to any one of claims 10 to 12, wherein, along the direction toward the compressor, the distance between the electric control box and the evaporator tends to increase, and an angle θ is formed between the electric control box and the evaporator, and θ satisfies: 15°≤θ≤30°.
The heat pump water heater according to any one of claims 1 to 13, further comprising a filter assembly, wherein the filter assembly is disposed in the second shell and opposite to the first air inlet; wherein the filter assembly satisfies one of the following conditions:

The filter assembly is detachably connected to the second shell; or

The filter assembly comprises a filter and a bracket, and the filter is detachably arranged on the bracket.
The heat pump water heater according to any one of claims 1 to 14, wherein the second shell is detachably connected to the mounting plate; a receiving chamber is formed between the mounting plate and the second shell; the compressor, the fan assembly, the throttling assembly and the evaporator are respectively received in the receiving chamber; wherein,

One of the second shell and the mounting plate is provided with at least one accommodating portion, and the other of the second shell and the mounting plate is provided with at least one engaging portion, and the engaging portion is fitted in the accommodating portion to connect the second shell and the mounting plate.
The heat pump water heater according to claim 15, wherein the locking portion is arranged on the inner wall surface of the second shell; the mounting plate body is connected to the first shell; the mounting plate also includes a matching portion, and the matching portion is connected to the mounting plate body; the matching portion is arranged in the circumference of the mounting plate body and extends in the direction toward the second shell; the matching portion is located in the second shell, and the accommodating portion is arranged on the matching portion.
The heat pump water heater according to claim 15 or 16, wherein the second shell further comprises a first sub-shell and a second sub-shell that are detachably connected, and the top cover is provided on the first sub-shell and the second sub-shell; the at least one clamping portion comprises a plurality of clamping portions, and the plurality of clamping portions comprises at least one first sub-clamping portion and at least one second sub-clamping portion; wherein,

The at least one first sub-clamping portion includes a plurality of first sub-clamping portions, and the plurality of first sub-clamping portions are arranged at intervals along the circumference of the first sub-shell; the at least one second sub-clamping portion includes a plurality of second sub-clamping portions, and the plurality of second sub-clamping portions are arranged at intervals along the circumference of the second sub-shell.
The heat pump water heater according to claim 17, wherein the first sub-engaging parts located on both sides of the first sub-shell among the plurality of first sub-engaging parts have first guide surfaces; the second sub-engaging parts located on both sides of the second sub-shell among the plurality of second sub-engaging parts have second guide surfaces;

The at least one accommodating portion includes a plurality of accommodating portions, and the plurality of accommodating portions include a plurality of first accommodating portions and a plurality of second accommodating portions; at least two of the plurality of first accommodating portions have a third guide surface, and the third guide surface is in contact with the first guide surface; and at least two of the plurality of second accommodating portions have a fourth guide surface, and the fourth guide surface is in contact with the second guide surface.
The heat pump water heater according to claim 17 or 18, wherein the plurality of second sub-engaging portions are respectively arranged close to ends of the second sub-shell.
The heat pump water heater according to any one of claims 17 to 19, wherein the second shell further includes at least one third sealing rib, the third sealing rib is located on a side of the second shell adjacent to the mounting plate and abuts against the mating portion; wherein the third sealing rib is provided between two adjacent snap-fitting portions among the plurality of snap-fitting portions.
The heat pump water heater according to claim 20, wherein at least one first limiting portion is provided on the outer periphery of the matching portion, and the third sealing rib abuts against the first limiting portion.
The heat pump water heater according to any one of claims 17 to 21, wherein one of the first sub-shell and the second sub-shell is provided with a buckle, the mounting plate comprises a second limiting portion, and the buckle abuts against the second limiting portion.
The heat pump water heater according to any one of claims 17 to 22, wherein the first subshell is provided with at least one second connecting portion, the second subshell is provided with at least one second connecting portion, and the first connecting portion cooperates with the second connecting portion to seal the connection between the first subshell and the second subshell.
The heat pump water heater according to claim 23, wherein the first connection portion comprises:

a first section, the first section extending along the axial direction of the first shell;

a second section, one end of which is connected to the first section, and the other end of which extends in a direction toward the center of the first shell;

The second connecting portion comprises:

a fourth section, the fourth section extending along the axial direction of the first shell, the fourth section being fitted in the first section;

A fifth section, one end of which is connected to the fourth section, and the other end of which extends in a direction toward the center of the first shell; and the fifth section is fitted in the second section.
The heat pump water heater according to claim 24, wherein the second shell further comprises a top cover, the top cover is arranged on the top of the first sub-shell and the second sub-shell, and the bottom wall of the top cover abuts against the outer side wall of the second section.
The heat pump water heater according to claim 24 or 25, wherein the first connecting portion further comprises a third section, one end of the third section is connected to the other end of the second section, and the other end of the third section extends obliquely in a direction away from the second section;

The second connecting portion further includes a sixth section, one end of which is connected to the other end of the fifth section, and the other end of the sixth section extends obliquely in a direction away from the fifth section; the sixth section is fitted in the third section.
The heat pump water heater according to any one of claims 24 to 26, wherein the matching portion is located in the second shell; along the axial direction of the first shell, the top end of the matching portion is higher than the bottom end of the first section.