Heat pump water heater

Abstract

The utility model discloses a heat pump water heater which comprises a shell, an evaporator and a fan, the shell is provided with an air inlet and air outlets, the air inlet is located on one side face of the shell, the air outlets are located on the side face, adjacent to the air inlet, of the shell, the number of the air outlets is two, and the two air outlets are oppositely arranged; the evaporator is located in the shell, the evaporator and the air inlet are oppositely arranged, the two opposite ends of the evaporator are bent to form extending evaporation parts respectively, and the two extending evaporation parts and the two air outlets are oppositely arranged respectively; and the fan is positioned between the air inlet and the evaporator. According to the utility model, the problems of large evaporator volume and large heat pump water heater volume caused by large evaporation area can be solved, and the problem of low heat exchange efficiency of the evaporator is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of water heaters, and particularly relates to a heat pump water heater. Background Art

[0002] Heat pump water heaters absorb low-temperature and low-pressure air heat energy and convert it into high-temperature and high-pressure through a compressor, thereby raising the temperature of the liquid in the water tank. Heat pump water heaters have good energy-saving effects.

[0003] The heating effect of heat pump water heaters is mainly achieved by the wind system, evaporation area and condensation area. In general, the heating effect can be improved by increasing the evaporation area, but the evaporator is generally flat, and the evaporation area is positively correlated with the volume of the evaporator. When the evaporation area is increased, the volume of the heat pump water heater is easily too large, which is not convenient for installation.

[0004] Furthermore, for existing heat pump water heaters, the air inlet and the air outlet directly form an air circulation channel, which reduces the contact area between the air and the evaporator, making it difficult for the evaporator to obtain sufficient air heat energy from the air and improving the heating effect. Utility Model Content

[0005] The utility model aims to provide a heat pump water heater to solve the problems of large evaporator volume and large heat pump water heater volume caused by a large evaporation area, and to solve the problem of insufficient air thermal energy caused by a small contact area between air and evaporator.

[0006] The technical solutions adopted to solve the above technical problems are:

[0007] The utility model discloses a heat pump water heater, comprising:

[0008] A shell, wherein the shell is provided with an air inlet and an air outlet, the air inlet is located on one side of the shell, the air outlet is located on a side of the shell adjacent to the air inlet, and two air outlets are provided and arranged opposite to each other;

[0009] An evaporator, the evaporator is located in the shell, the evaporator is arranged opposite to the air inlet, the two opposite ends of the evaporator are respectively bent to form an extended evaporation portion, and the two extended evaporation portions are respectively arranged opposite to the two air outlets;

[0010] A fan is located between the air inlet and the evaporator.

[0011] The utility model has at least the following beneficial effects:

[0012] At opposite ends of the evaporator, there are bent portions respectively formed to have extended evaporation portions, and moreover, the extended evaporation portions are arranged opposite to the air outlet. Therefore, the contact area between the evaporator and the air can be increased. With this arrangement, the evaporator extends by utilizing the space inside the housing, increasing the volume of the evaporator while the volume of the heat pump water heater remains unchanged.

[0013] The housing is provided with two air outlets to increase the channels for the cold air after heat exchange to leave the housing. The evaporator and the extended evaporation portions at its opposite ends surround the air inlet. When the fan blows air into the housing from the air inlet, the air can only flow out from the air outlet after passing through the evaporator, realizing the heat exchange between the air and the substances inside the evaporator and improving the heat exchange efficiency of the air thermal energy.

[0014] As a further improvement of the above technical solution, the horizontal cross-section of the evaporator is in a U-shaped groove. The U-shaped groove evaporator has a simple structure, is easy to manufacture, and can also increase the area where the extended evaporation portions at the opposite ends of the evaporator are opposite to the air outlet, which helps to improve the heat exchange efficiency.

[0015] As a further improvement of the above technical solution, the horizontal cross-section of the evaporator is in a U shape.

[0016] When the evaporator is in a U shape, the fan blows air from the air inlet. A part of the air directly passes through the evaporator and undergoes heat exchange with the substances inside the evaporator; another part of the air can blow along the arc section of the evaporator towards the extended evaporation portions at the opposite ends of the evaporator, thereby improving the heat exchange efficiency between the air and the evaporator.

[0017] As a further improvement of the above technical solution, there are two fans, and the two fans are arranged side by side in the vertical direction.

[0018] By increasing the number of fans, the flow rate and flow volume of the air inside the housing are increased, thereby increasing the contact area between the air and the evaporator and the heat exchange efficiency. Moreover, the upper and lower spaces are effectively utilized, avoiding an increase in the floor area of the heat pump water heater.

[0019] As a further improvement of the above technical solution, the fan is an axial flow fan. The fan includes blades and a motor for driving the blades to rotate, and the motor is located between the two extended evaporation portions.

[0020] The axial flow fan can directly blow the air from the air inlet towards the evaporator opposite to the air inlet, ensuring sufficient contact between the air and the evaporator so that the substances inside the evaporator can obtain the air thermal energy; moreover, setting the motor between the two extended evaporation portions improves the space utilization rate, thereby making the structure of the heat pump water heater more compact and reducing the floor area.

[0021] As a further improvement of the above technical solution, two upper and lower corresponding partitions are provided in the shell, and the evaporator and the fan are both located between the two partitions.

[0022] Through the above arrangement, the evaporator and the fan are confined between two partitions, and the air blown in by the fan is guided through the partition to pass through the evaporator and then flow out from the air outlet, thereby achieving rapid circulation of air in the shell, thereby increasing the air heat energy obtained by the evaporator.

[0023] As a further improvement of the above technical solution, the two partitions are respectively connected to the upper end surface and the lower end surface of the evaporator.

[0024] Prevent air from flowing out from the gap between the evaporator and the partition, and ensure that the air can only pass through the evaporator and exchange heat with the evaporator.

[0025] As a further improvement of the above technical solution, the two fans are mounted and fixed between the two partitions.

[0026] Since the air inlet is arranged on one side of the shell, the two fans are firmly fixed between the two partitions, which can ensure that the fans and the air inlet are aligned with each other and air is taken in from the air inlet.

[0027] As a further improvement of the above technical solution, it also includes a compressor, a condenser and a throttling device, and the evaporator, the compressor, the condenser and the throttling device are cyclically connected in sequence through pipelines.

[0028] After the evaporator exchanges heat energy with the air, the low-temperature and low-pressure substances in the evaporator are converted into high-temperature and high-pressure substances through the compressor; the condenser is used to exchange heat between the high-temperature and high-pressure internal substances and water, thereby increasing the temperature of the water; the throttling device is used to reduce temperature and pressure and regulate the flow of internal substances.

[0029] As a further improvement of the above technical solution, a water tank is also included, and the evaporator and the compressor are both located on one side of the water tank.

[0030] Through the above arrangement, the internal substances and water are heat exchanged at the water tank, and the positions of the evaporator and the compressor do not affect the volume of the heat pump water heater. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The utility model is further described below in conjunction with the accompanying drawings and embodiments;

[0032] Figure 1 It is a schematic diagram of the overall structure of the heat pump water heater provided by the embodiment of the utility model;

[0033] Figure 2 It is a schematic diagram of the internal structure of the heat pump water heater provided by the embodiment of the utility model after removing the front end surface of the shell;

[0034] Figure 3 It is a horizontal cross-sectional schematic diagram of the heat pump water heater provided in the embodiment of the utility model.

[0035] The following are marked in the accompanying drawings:

[0036] 100. Heat pump water heater;

[0037] 200, housing; 210, air inlet; 220, air outlet; 230, cavity;

[0038] 300, evaporator; 310, extended evaporation portion;

[0039] 400, fan; 410, blade; 420, motor;

[0040] 500, partition; 510, mounting frame;

[0041] 600. Water tank. DETAILED DESCRIPTION

[0042] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0043] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0044] In the description of the utility model, if there is a word description such as "several", it means one or more, and the meaning of "more than" is two or more. Greater than, less than, and more than are understood to exclude the number itself, and above, below, and within are understood to include the number itself. If there is a description of the first, second, and third, it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0045] It should be noted that in the drawings, the X direction is from the rear side to the front side of the heat pump water heater; the Y direction is from the left side to the right side of the heat pump water heater; and the Z direction is from the bottom side to the top side of the heat pump water heater.

[0046] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0047] Reference Figures 1 to 3 , several embodiments of the heat pump water heater of the present utility model are given below.

[0048] like Figures 1 to 3 As shown, the heat pump water heater 100 according to the embodiment of the utility model includes a housing 200 , an evaporator 300 and a fan 400 .

[0049] It can be understood that the housing 200 is the outer shell of the heat pump water heater 100 , and a cavity 230 for accommodating structures such as the evaporator 300 and the fan 400 is provided inside the housing 200 .

[0050] It is understandable that the housing 200 is provided with an air inlet 210 and an air outlet 220. Figure 1 and Figure 2 The air inlet 210 and the air outlet 220 are both arranged on the side of the housing 200, and are connected to the outside of the housing 200 and the cavity 230, so that air can be input into the cavity 230 through the air inlet 210, and heat exchange occurs with the evaporator 300 of the cavity 230, so that the internal material of the evaporator 300 can obtain air heat energy from the air, and the exchanged cold air flows out of the cavity 230 through the air outlet 220, and continues to introduce new air through the air inlet 210, so that the air is always in a circulation state in the cavity 230, ensuring that the evaporator 300 obtains sufficient air heat energy.

[0051] In some embodiments, the air inlet 210 and the air outlet 220 may be in a straight line opposite to each other. The evaporator 300 is disposed between the air inlet 210 and the air outlet 220 so that the exchanged air can be quickly discharged from the cavity 230, shortening the air flow path to improve the efficiency of heat exchange.

[0052] However, during the actual manufacturing of the heat pump water heater 100, the volume of the heat pump water heater 100 is often reduced without reducing the water storage capacity, so as to save the space occupied by the heat pump water heater 100 and facilitate installation; in this case, multiple structures and components will be combined together, making it difficult to achieve a straight line between the air inlet 210 and the air outlet 220.

[0053] In view of the above situation, in this embodiment, the air outlet 220 is laid on the adjacent side of the side where the air inlet 210 is located, that is, the air inlet 210 and the air outlet 220 are respectively located on two adjacent sides of the shell 200, and the air inlet 210 and the air outlet 220 do not need to be directly opposite to each other, and the air circulation route can be shortened to ensure that the cold air after heat exchange can quickly flow out of the cavity 230. Figures 1 to 3 shown.

[0054] In some embodiments, the air circulation route can be from the upper and lower directions. Specifically, the air inlet 210 can be set on the upper end surface of the housing 200, and the air outlet 220 can be set on the side of the housing 200. The air can be input into the cavity 230 from top to bottom, and the exchanged cold air settles downward to be output from one side of the housing 200.

[0055] In other embodiments, the air circulation route is horizontal. Specifically, the air inlet 210 and the air outlet 220 are both arranged on the side of the housing 200. When the air enters from the air inlet 210 and passes through the evaporator 300, it can quickly flow out from the air outlet 220 on the adjacent side, completing the heat exchange of the air and shortening the air circulation route.

[0056] Furthermore, two air outlets 220 can be provided, each air outlet 220 is located on the adjacent side of the air inlet 210, so that the two air outlets 220 are arranged opposite to each other. When the air is introduced into the cavity 230 from the air inlet 210 and heat exchanged with the evaporator 300, it can flow out from the air outlet 220 closest to it, thereby increasing the air outflow path and preventing the cold air after the exchange from remaining in the cavity 230 and affecting the air heat energy obtained by the evaporator 300.

[0057] In this embodiment, the air inlet 210 is disposed on the front side of the housing 200, and the two air outlets 220 are respectively disposed on the left side and the right side of the housing 200. The air inlet 210 and the air outlet 220 are at the same horizontal position, so that when the air flows into and out of the cavity 230 horizontally, the travel time and the flow path can be shortened, ensuring that the air after heat exchange can quickly leave the cavity 230. Figures 1 to 3 shown.

[0058] It can be understood that the evaporator 300 is arranged in the cavity 230, and the evaporator 300 is arranged opposite to the air inlet 210. The opposite ends of the evaporator 300 are respectively bent to form extended evaporation parts 310, one of the extended evaporation parts 310 is opposite to the air outlet 220 on the left side of the shell 200, and the other extended evaporation part 310 is opposite to the air outlet 220 on the right side of the shell 200. Specifically, since the air inlet 210 is located on the front side of the shell 200, the evaporator 300 is linearly opposite to the air inlet 210 in the front-to-back direction, so that the air introduced into the air inlet 210 can directly pass through the evaporator 300 and exchange heat with the internal substances of the evaporator 300; since the air outlet 220 is respectively located on the left and right sides of the shell 200, the left and right ends of the evaporator 300 are bent and extended along the front-to-back direction to form an extended evaporation portion 310, and the two extended evaporation portions 310 are respectively parallel to the two air outlets 220 on the left and right sides of the shell 200 to block the air outlet 220 and prevent the air entering the cavity 230 from directly leaving the cavity 230 from the air outlet 220, resulting in the air not fully exchanging heat with the evaporator 300, which directly affects the air thermal energy obtained by the internal substances of the evaporator 300.

[0059] In some embodiments, the two extended evaporation portions 310 can be bent backward along the left and right ends of the evaporator 300. The air needs to pass through the evaporator 300 before it can be output from the blocked air outlet 220. However, under this setting, the possibility of heat exchange between the two extended evaporation portions 310 and the air is low. The air mainly exchanges heat with the evaporator 300. The extended evaporation portion 310 is only used to prevent the air from passing directly through the gap between the evaporator 300 and the shell 200, resulting in poor heat exchange effect.

[0060] In this embodiment, the two extended evaporation parts 310 both extend forward, the front end of one extended evaporation part 310 is connected to the left inner end surface of the housing 200, and the front end of the other extended evaporation part 310 is connected to the right inner end surface of the housing 200, and the two extended evaporation parts 310 are respectively arranged at intervals from the two air outlets 220. When air enters the cavity 230 from the air inlet 210, the air can pass through the evaporator 300 and then be output from one of the air outlets 220 on the left and right sides, or the air can pass through the extended evaporation part 310 and then be directly output from the corresponding air outlet 220. The above arrangement enables the air to simultaneously exchange heat between the evaporator 300 and the two extended evaporation parts 310, thereby increasing the contact area between the air and the evaporator 300 and the extended evaporation parts 310, and improving the heat energy conversion efficiency of the air.

[0061] It is understandable that the fan 400 is provided in the cavity 230, and the fan 400 is located between the air inlet 210 and the evaporator 300. Specifically, the fan 400 is located behind the air inlet 210, the air inlet of the fan 400 is connected to the air inlet 210, and the air outlet of the fan 400 faces the evaporator 300. The fan 400 introduces air outside the housing 200 through the air inlet 210, guides the air to the evaporator 300, so that the air and the internal substances of the evaporator 300 undergo heat exchange, and uses the airflow to take away the exchanged cold air, increase the air flow rate in the cavity 230, and improve the heat exchange capacity between the air and the evaporator 300.

[0062] In some embodiments, the horizontal cross-section of the evaporator 300 is in a U-shaped shape with the opening facing forward. Specifically, the angles between the evaporator 300 and the two extended evaporation parts 310 are both right angles. Since the general evaporator 300 is in the shape of a flat plate, the manufacturing difficulty of the evaporator 300 that bends forward increases. The evaporator 300 and the extended evaporation part 310 with a right angle are convenient for controlling the left and right lengths of the evaporator 300, making the manufacturing of the evaporator 300 relatively simple. The evaporator 300 and the extended evaporation part 310 with a right angle can also increase the relative area between the extended evaporation part 310 and the air outlet 220, so as to facilitate the rapid outflow of cold air after heat exchange.

[0063] In this embodiment, the horizontal cross section of the evaporator 300 is U-shaped with the opening facing forward. Figure 3 Specifically, the left and right ends of the evaporator 300 are connected to the extended evaporation part 310 in an arc shape, and the U-shaped evaporator 300 can increase the air heat energy it obtains. When the fan 400 blows air to the evaporator 300, part of the air can flow along the curved arc to the extended evaporation parts 310 on both sides, so that the air can exchange heat with the extended evaporation parts 310 on the left and right sides.

[0064] It can be understood that the evaporator 300 and the extended evaporation portion 310 extend in the up-down direction, and any horizontal cross-section thereof is U-shaped.

[0065] In some embodiments, the fan 400 may be provided as one, and the air inlet 210 , the fan 400 and the evaporator 300 are all located in the same straight line extending forward and backward.

[0066] In other embodiments, when the evaporator 300 is longer in the vertical direction, multiple fans 400 may be arranged side by side in the vertical direction. The multiple fans 400 arranged vertically effectively utilize the redundant vertical space of the cavity 230, so that the structure of the heat pump water heater 100 can be more compact and the floor space can be reduced. Correspondingly, the number of air inlets 210 is equal to the number of fans 400, and each air inlet 210 is connected to the air inlet of each fan 400. By increasing the number of fans 400 and air inlets 210, the flow rate of air in and out of the cavity 230 is increased, and the heat exchange efficiency between the evaporator 300 and the air is improved.

[0067] In this embodiment, two fans 400 are provided and correspond to each other up and down, and two air inlets 210 are also provided. The two air inlets 210 are laid up and down along the front end surface of the shell 200, and the two air inlets 210 are arranged at a distance so that the two fans 400 are laid side by side and are independent of each other. Figure 1 and Figure 2 shown.

[0068] It can be understood that the uppermost ends of the fan 400 and the air inlet 210 are not higher than the upper part of the air outlet 220, and the lowermost ends of the fan 400 and the air inlet 210 are not lower than the lower part of the air outlet 220, ensuring that both air inlets 210 are located within the horizontal height of the air outlet 220 and ensuring that air enters and exits the cavity 230 in a horizontal direction.

[0069] It is understandable that the fan 400 can be a centrifugal fan 400 and an axial flow fan 400. The exhaust direction of the centrifugal fan 400 is perpendicular to the air inlet, and when the fan 400 takes in air from the air inlet 210, it exhausts air from the circumferential direction of the fan 400. The exhaust direction and the air inlet direction of the axial flow fan 400 are in a straight line. In this embodiment, the fan 400 is an axial flow fan 400, so that the introduced air can be discharged to the rear end of the evaporator 300 in a straight line.

[0070] It is understandable that, since the air introduced by the fan 400 in the cavity 230 can directly flow from the gap between the housing 200 and the evaporator 300 to the air outlet 220, the air cannot pass through the evaporator 300. Therefore, in this embodiment, the cavity 230 is provided with two partitions 500, the two partitions 500 are opposite to each other, and the evaporator 300 is sandwiched between the two partitions 500, that is, the upper end surface of the evaporator 300 is connected to the partition 500 located above, and the lower end surface of the evaporator 300 is connected to the partition 500 located below, ensuring that the air can only flow out from the air outlet 220 after passing through the evaporator 300.

[0071] It is understandable that, since the fan 400 is disposed in the cavity 230 , the fan 400 and the evaporator 300 are horizontally opposed to each other, and therefore, the fan 400 is also located between the two partitions 500 .

[0072] In some embodiments, since the fan 400 is in communication with the air inlet 210 , the fan 400 may be fixedly connected to the front inner side surface of the housing 200 so that the fan 400 is precisely aligned with the air inlet 210 .

[0073] In this embodiment, the fan 400 is connected to the partition 500. Specifically, a mounting frame 510 extending up and down is provided in the cavity 230, the upper end of the mounting frame 510 is fixedly connected to the partition 500 located above, and the lower end of the mounting frame 510 is fixedly connected to the partition 500 located below, and the fan 400 is fixedly connected to the mounting frame 510, so that the fan 400 is installed and fixed between the two partitions 500, such as Figure 2 and Figure 3 shown.

[0074] It is understandable that the fan 400 includes blades 410 and a motor 420. When powered on, the motor 420 drives the blades 410 to rotate, thereby introducing air into the cavity 230. Specifically, the motor 420 and part of the blades 410 are both located between the two extended evaporation parts 310 and in front of the evaporator 300, so that the two are arranged in a space formed by the evaporator 300 and the two extended evaporation parts 310, thereby making the heat pump water heater 100 compact and reducing its footprint.

[0075] It can be understood that the edge of the partition 500 is fixedly connected to the shell 200 to stabilize the upper and lower positions of the partition 500 in the cavity 230. Since the air outlet 220 is arranged on the left and right end surfaces of the shell 200, and the air outlet 220 is composed of a plurality of holes, the upper hole of the air outlet 220 is lower than the partition 500 located above, and the lower hole of the air outlet 220 is higher than the partition 500 located below, thereby preventing the connection position of the partition 500 and the shell 200 from affecting the air discharge.

[0076] It is understandable that the heat pump water heater 100 also includes a compressor, a condenser and a throttling device. After the air exchanges heat with the evaporator 300 and the extended evaporation part 310, the internal substances of the evaporator 300 and the extended evaporation part 310 absorb heat and then vaporize. The evaporator 300 is connected to the compressor, and the vaporized substances enter the compressor. The compressor compresses the low-pressure gas into a high-temperature, high-pressure gas. The compressor is connected to the condenser, and the high-temperature, high-pressure gas is sent to the condenser. Cold water from the water tank 600 is passed into the condenser, and the cold water exchanges heat with the gas. The cold water is heated to hot water, and the vaporized substances are condensed into liquefied substances. The condenser is connected to the throttling device to control the flow of the liquefied substances. The throttling device is connected to the evaporator 300, so that the liquefied substances flow back to the evaporator 300 and the extended evaporation part 310, and absorb heat and vaporize again to achieve circulation.

[0077] It is understandable that the heat pump water heater 100 further includes a water tank 600. Figure 3 Specifically, the water tank 600 is in the cavity 230 , the water tank 600 is connected to the condenser through a water pump, and the water tank 600 is arranged behind the evaporator 300 and the compressor, saving the overall volume of the heat pump water heater 100 .

[0078] The preferred implementation methods of the utility model are specifically described above, but the invention of the utility model is not limited to the described embodiments. Those skilled in the art may make various equivalent modifications or substitutions without violating the spirit of the utility model. These equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A heat pump water heater, characterized in that: include: A shell, wherein the shell is provided with an air inlet and an air outlet, the air inlet is located on one side of the shell, the air outlet is located on a side of the shell adjacent to the air inlet, and two air outlets are provided and arranged opposite to each other; An evaporator, the evaporator is located in the shell, the evaporator is arranged opposite to the air inlet, the two opposite ends of the evaporator are respectively bent to form an extended evaporation portion, and the two extended evaporation portions are respectively arranged opposite to the two air outlets; A fan is located between the air inlet and the evaporator.

2. The heat pump water heater according to claim 1, characterized in that: The horizontal cross section of the evaporator is in the shape of a U.

3. The heat pump water heater according to claim 1, characterized in that: The horizontal cross section of the evaporator is U-shaped.

4. The heat pump water heater according to claim 1, characterized in that: There are two fans, which are laid side by side in the up-down direction.

5. The heat pump water heater according to claim 4, characterized in that: The fan is an axial flow fan, and the fan comprises blades and a motor for driving the blades to rotate, and the motor is located between the two extended evaporation parts.

6. The heat pump water heater according to claim 1, characterized in that: Two upper and lower corresponding partitions are arranged in the shell, and the evaporator and the fan are both located between the two partitions.

7. The heat pump water heater according to claim 6, characterized in that: The two partitions are respectively connected to the upper end surface and the lower end surface of the evaporator.

8. The heat pump water heater according to claim 6, characterized in that: The two fans are mounted and fixed between the two partitions.

9. The heat pump water heater according to claim 1, characterized in that: It also includes a compressor, a condenser and a throttling device. The evaporator, the compressor, the condenser and the throttling device are cyclically connected in sequence through pipelines.

10. The heat pump water heater according to claim 9, characterized in that: A water tank is also included, and the evaporator and the compressor are both located on one side of the water tank.

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