Heat pump water dispenser

Abstract

The invention relates to the field of heat pump water dispensers, in particular to a heat pump water dispenser, and aims to solve the problem that an existing heat pump water dispenser cannot meet cold and hot water supply requirements at the same time. In order to achieve the purpose, the heat pump water dispenser comprises a compressor, a condenser, a throttling device, an evaporator, a refrigerant loop, a water storage tank and a water supply structure, the compressor, the condenser, the throttling device and the evaporator are sequentially arranged on the refrigerant loop, the water storage tank is used for conducting heat exchange with the evaporator, and a heat dissipation structure is arranged on the water storage tank; the water supply structure is used for exchanging heat with the condenser. According to the arrangement mode, water can serve as a secondary refrigerant, heat exchange is conducted between the water and air in the environment through the heat dissipation structure, the heat exchange efficiency of the evaporator is improved, and therefore the temperature of hot water in the water supply structure is guaranteed, meanwhile, it can be guaranteed that the water in the water storage tank is always kept at a relatively low temperature, and the requirement of a user for cold water is met.

Description

Technical Field

[0001] The present invention relates to the field of heat pump water dispensers, and specifically provides a heat pump water dispenser. Background Art

[0002] Currently, heat pump water dispensers are widely used in households, offices, and other public places to provide hot and cold drinking water. The heat pump water dispenser includes a heat pump system. Through the operation of the heat pump system, the heat energy of the condenser can be collected and transferred to the water, thereby realizing the heating of the water. At the same time, through the circulation of the refrigerant, the water can be cooled through the evaporator.

[0003] However, in actual use, the existing heat pump water dispensers usually encounter a problem, that is, while providing cold water, it may not be able to ensure sufficient hot water supply. At the same time, the heat pump water dispenser can only ensure the effective operation of one of the operations of cooling water and heating water. When users need cold water and hot water at the same time, they may encounter the problem of insufficient cold water or hot water supply.

[0004] Correspondingly, there is a need in the art for a new heat pump water dispenser to solve the above problems. Summary of the Invention

[0005] The present invention aims to solve the above technical problems, that is, to solve the problem that the existing heat pump water dispensers cannot ensure that they can simultaneously meet the cold and hot water supply requirements.

[0006] In a first aspect, the present invention provides a heat pump water dispenser, characterized in that the heat pump water dispenser includes: a compressor, a condenser, a throttling device, an evaporator, and a refrigerant circuit, and the compressor, the condenser, the throttling device, and the evaporator are sequentially arranged on the refrigerant circuit; a water storage tank for heat exchange with the evaporator, and the water storage tank is provided with a heat dissipation structure; and a water supply structure for heat exchange with the condenser.

[0007] In the case of adopting the above technical solution, since the water storage capacity of the water storage tank is large, and generally the demand for cold water is smaller than that for hot water, even if a large amount of heat exchange occurs with the air, the water temperature in the water storage tank will not rise excessively. This is because water has a large heat capacity and can absorb a large amount of heat without significant temperature increase. Therefore, based on this theory, the present invention does not set the water storage tank as a heat-insulating structure. Instead, a heat dissipation structure is provided on the water storage tank. Using water as a coolant, heat exchange is carried out with the air in the environment through the heat dissipation structure, improving the heat exchange efficiency of the evaporator, thereby ensuring the hot water temperature in the water supply structure. At the same time, it can also ensure that the water in the water storage tank always remains at a relatively low temperature to meet the user's demand for cold water. Therefore, the above setting method can ensure the supply of both cold and hot water. Among them, the size specifications of the water storage tank can be matched and designed according to the size of the load.

[0008] In the preferred technical solution of the above heat pump water dispenser, the heat pump water dispenser further includes a first air flow guiding device for delivering air to the water storage tank.

[0009] In the case of adopting the above technical solution, the working state of the first air flow guiding device can be controlled to adjust the cold and hot states of the water storage tank according to actual needs. For example, when more hot water is needed, the first air flow guiding device can be turned on to improve the heat exchange efficiency between the condenser and the water supply structure, thereby ensuring the supply of hot water; while when too much cold water is needed, the first air flow guiding device can be turned off to ensure the supply of cold water. Since the first air flow guiding device can adjust the cold and hot states of the water storage tank according to needs, this design has high flexibility when facing different cold and hot water demands. In addition, by actively controlling the cold and hot states of the water storage tank through the first air flow guiding device, unnecessary energy consumption can be reduced, achieving energy conservation and environmental protection.

[0010] In the preferred technical solution of the above heat pump water dispenser, the heat dissipation structure is a fin, and the fin is arranged on the outer periphery of the water storage tank.

[0011] In the preferred technical solution of the above heat pump water dispenser, the evaporator is tubular and is wound around the water storage tank.

[0012] In the preferred technical solution of the above heat pump water dispenser, the evaporator is wound around the outer wall of the water storage tank.

[0013] In the preferred technical solution of the above heat pump water dispenser, the middle part of the water storage tank divides the water storage tank into a first part and a second part. The evaporator is wound around the outer wall of the first part, and the fin is arranged on the outer periphery of the second part.

[0014] In the case of adopting the above technical solution, by dividing the water storage tank into two parts and installing the evaporator and the fins separately, the two heat dissipation methods can be separated in space, reducing the interference between them, thereby optimizing the heat dissipation efficiency. The working states of each part can be adjusted according to actual needs, making the operation of the entire system more stable. For example, when the water temperature in the water storage tank is relatively high, heat exchange can mainly rely on the evaporator to ensure the cold water temperature; while when the cold water temperature is relatively low, heat dissipation can mainly rely on the fins to improve the heat exchange efficiency of the system. Since the water storage tank is divided into two parts, the number and size of the evaporator and the fins can be adjusted according to actual heat dissipation requirements, or the volume ratio of the two parts can be adjusted, so as to more flexibly meet different heat dissipation needs.

[0015] In the preferred technical solution of the above heat pump water dispenser, the water supply structure includes a heat preservation box and a heat exchange water pipe, and the heat exchange water pipe is used for heat exchange with the condenser, and the water outlet of the heat exchange water pipe is connected to the water inlet of the heat preservation box.

[0016] In the preferred technical solution of the above heat pump water dispenser, the heat pump water dispenser further includes a second air flow guiding device, and the second air flow guiding device is used for delivering air to the condenser.

[0017] In the case of adopting the above technical solution, when the cold water temperature in the water storage tank is too high and the water temperature in the heat preservation box reaches the standard, the second air flow guiding device can be turned on to enable the refrigerant in the condenser to exchange heat with the air, accelerating the heat dissipation speed of the condenser, improving the heat exchange efficiency, and meeting the cold water demand. When the cold water temperature reaches the standard, the second air flow guiding device is not turned on, reducing unnecessary energy consumption and achieving energy conservation and environmental protection. The temperature of the condenser can be precisely adjusted by controlling the working state of the second air flow guiding device, and then the outlet water temperature can be precisely controlled.

[0018] In the preferred technical solution of the above heat pump water dispenser, the heat pump water dispenser further includes a water inlet pipeline, a first branch, a second branch, a normal temperature branch and a four-way valve. The water inlet pipeline is connected to the inlet of the four-way valve, the water inlet end of the first branch is connected to the first outlet of the four-way valve, the water inlet end of the second branch is connected to the second outlet of the four-way valve, the water inlet end of the normal temperature branch is connected to the third outlet of the four-way valve, and the water outlet ends of the first branch and the second branch are respectively connected to the water inlet of the water supply structure and the water inlet of the water storage tank.

[0019] In the preferred technical solution of the above heat pump water dispenser, the heat pump water dispenser further includes a boiling water pipe, the boiling water pipe is connected to the water outlet of the water supply structure, and a heating device is provided on the boiling water pipe. Description of the Drawings

[0020] The preferred embodiments of the present invention will be described below in conjunction with the accompanying drawings, in which:

[0021] Figure 1 is a schematic structural diagram of the heat pump system of the present invention;

[0022] Figure 2 is a schematic structural diagram of the water storage tank of the heat pump system of the present invention.

[0023] Description of reference numerals:

[0024] 10 - Compressor; 11 - Condenser; 12 - Throttling device; 13 - Evaporator; 14 - Refrigerant circuit; 20 - Water storage tank; 201 - Heat dissipation structure; 202 - First part; 203 - Second part; 30 - Insulation box; 40 - First air flow guiding device; 50 - Second air flow guiding device; 60 - Water inlet pipeline; 61 - First branch; 62 - Second branch; 63 - Normal temperature branch; 64 - Four-way valve; 70 - Boiling water pipe; 71 - Heating device; 80 - Cold water pipeline. Specific embodiments

[0025] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principle of the present invention and are not intended to limit the protection scope of the present invention. Those skilled in the art can make adjustments according to needs to adapt to specific application scenarios.

[0026] It should be noted that in the description of the present invention, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0027] In addition, it should also be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0028] Such as Figure 1 and Figure 2As shown, to solve the problem that the existing heat pump water dispenser cannot ensure simultaneous satisfaction of the cold and hot water supply requirements, the present invention provides a heat pump water dispenser, which includes a compressor 10, a condenser 11, a throttling device 12, an evaporator 13, a refrigerant circuit 14, a water storage tank 20, and a water supply structure. Among them, the compressor 10, the condenser 11, the throttling device 12, and the evaporator 13 are sequentially arranged on the refrigerant circuit 14. The water storage tank 20 is used for heat exchange with the evaporator 13. A heat dissipation structure 201 is provided on the water storage tank 20, and the water supply structure is used for heat exchange with the condenser 11. It can be understood that Figure 1 is only a schematic diagram. For the relevant structural settings of the water storage tank 20 and the evaporator 13, reference can be made to Figure 2 .

[0029] The advantage of the above settings is that, due to the large water storage capacity of the water storage tank 20 and the fact that the demand for cold water is generally smaller than that for hot water, even if a large amount of heat exchange occurs with the air, the water temperature in the water storage tank 20 will not rise excessively. This is because water has a large heat capacity and can absorb a large amount of heat without significant temperature increase. Therefore, based on this theory, the present invention does not set the water storage tank 20 as a heat-insulating structure. Instead, a heat dissipation structure 201 is provided on the water storage tank 20. Taking water as a coolant, heat exchange is carried out with the air in the environment through the heat dissipation structure 201, improving the heat exchange efficiency of the evaporator 13, thereby ensuring the hot water temperature in the water supply structure. At the same time, it can also ensure that the water in the water storage tank 20 always remains at a relatively low temperature to meet the user's demand for cold water. Therefore, the above setting method can ensure the supply of both cold and hot water. Among them, the size specifications of the water storage tank 20 can be matched and designed according to the size of the load.

[0030] Among them, the present invention does not limit the specific form of the throttling device 12, as long as it can adjust the flow rate and pressure of the refrigerant. For example, the throttling device 12 can be a throttle valve, specifically an electronic expansion valve, or a capillary tube, etc. The adjustment of these specific structures does not deviate from the principle of the present invention and is within the protection scope of the present invention. In addition, the present invention does not limit the specific shape of the water storage tank 20. For example, the water storage tank 20 can be a cylinder, a cuboid, or a special-shaped body, etc. As long as the water storage tank 20 can store water, the adjustment of these specific forms does not deviate from the principle of the present invention and is within the protection scope of the present invention.

[0031] The water storage tank 20 of the present invention can be not heat-insulated to improve the coolant capacity. Specifically, the water storage tank 20 of the present invention can not use heat-insulating materials and does not add a heat-insulating layer.

[0032] As a possible implementation, the heat dissipation structure 201 of the present invention is a fin 201, and the fin 201 is arranged on the outer periphery of the water storage tank 20. Specifically, the number of fins 201 is multiple, and they are evenly spaced in the length direction of the water storage tank 20. The fins 201 can be arranged to surround the entire circumference of the water storage tank 20. Due to the large number, uniform distribution, and circumferential arrangement around the water storage tank 20 of the fins 201, the heat dissipation area is large, and the heat exchange efficiency is improved. Moreover, this structure is much simpler than the complex heat dissipation structure 201, and the manufacturing and maintenance costs are relatively low.

[0033] As a possible implementation, the evaporator 13 of the present invention is tubular, and the evaporator 13 is wound around the water storage tank 20. Specifically, the evaporator 13 can be wound around the outer wall of the water storage tank 20 to avoid contaminating the water in the water storage tank 20. In addition, since both the evaporator 13 and the fins 201 are installed outside the water storage tank 20, the operation will be more convenient when maintenance or replacement is required.

[0034] As a possible implementation, the middle part of the water storage tank 20 divides the water storage tank 20 into a first part 202 and a second part 203. The evaporator 13 is wound around the outer wall of the first part 202, and the fins 201 are arranged on the outer periphery of the second part 203. Among them, the above-mentioned first part 202 and second part 203 can be two parts in the length direction of the water storage tank 20, that is, the cross-section in the middle of the water storage tank 20 divides the water storage tank 20 into a first part 202 and a second part 203.

[0035] The advantages of the above setting method are as follows: By dividing the water storage tank 20 into two parts and installing the evaporator 13 and the fins 201 respectively, the two heat dissipation methods can be separated in space, reducing the interference between them, thereby optimizing the heat dissipation efficiency. The working states of each part can be adjusted according to actual needs, making the operation of the entire system more stable. For example, when the water temperature in the water storage tank 20 is relatively high, heat exchange can mainly rely on the evaporator 13 to ensure the cold water temperature; while when the cold water temperature is relatively low, heat dissipation can mainly rely on the fins 201 to improve the heat exchange efficiency of the system. Since the water storage tank 20 is divided into two parts, the number and size of the evaporator 13 and the fins 201 can be adjusted according to actual heat dissipation requirements, or the volume ratio of the two parts can be adjusted, so as to more flexibly meet different heat dissipation needs.

[0036] As a possible implementation manner, the heat pump water dispenser of the present invention further includes a first air flow guiding device 40 for delivering air to the water storage tank 20. That is to say, after the first air flow guiding device 40 is started, air can flow, and the water storage tank 20 is on the air flow path. Among them, the first air flow guiding device 40 can be a blower, a fan, an air pump, etc. As long as it can deliver air to the water storage tank 20 to improve the heat exchange efficiency between the fin 201 and the air, these adjustments do not deviate from the principle of the present invention and are within the protection scope of the present invention.

[0037] Through the above setting method, the working state of the first air flow guiding device 40 can be controlled, and the cold and hot states of the water storage tank 20 can be adjusted according to actual needs. For example, when more hot water is needed, the first air flow guiding device 40 can be turned on to improve the heat exchange efficiency between the condenser 11 and the water supply structure, so as to ensure the supply of hot water; while when too much cold water is needed, the first air flow guiding device 40 can be turned off to ensure the supply of cold water. Since the first air flow guiding device 40 can adjust the cold and hot states of the water storage tank 20 according to needs, this design has high flexibility in the face of different cold and hot water demands. In addition, by actively controlling the cold and hot states of the water storage tank 20 through the first air flow guiding device 40, unnecessary energy consumption can be reduced, realizing energy conservation and environmental protection.

[0038] As a possible implementation manner, the water supply structure includes a heat preservation box 30 and a heat exchange water pipe for heat exchange with the condenser 11, and the water outlet of the heat exchange water pipe is connected to the water inlet of the heat preservation box 30. Among them, the present invention does not limit the specific setting method of the heat exchange between the heat exchange water pipe and the condenser 11. For example, the heat exchange water pipe and the condenser 11 form a sleeve-type heat exchange structure, that is, the condenser 11 is a condensation pipeline, and the condensation pipeline can be sleeved outside the heat exchange water pipe; or the heat exchange water pipe is sleeved outside the condensation pipeline. Or the heat exchange water pipe and the condenser 11 form a laminated heat exchange structure. As long as heat exchange can be carried out between the heat exchange water pipe and the condenser 11, these adjustments do not deviate from the principle of the present invention and are within the protection scope of the present invention.

[0039] The water source enters the heat exchange water pipe from the water inlet of the heat exchange water pipe. After heat exchange between the heat exchange water pipe and the condenser 11, the water in the heat exchange water pipe is heated to a certain temperature and then flows into the heat preservation box 30 for heat preservation, so that when the user needs hot water, the user can draw water through the heat preservation box 30.

[0040] As a possible implementation, the heat pump water dispenser of the present invention further includes a second air flow guiding device 50 for delivering air to the condenser 11. That is to say, after the second air flow guiding device 50 is started, air can flow, and the condenser 11 is on the air flow path. Among them, the second air flow guiding device 50 can be a blower, a fan or an air pump, etc. As long as it can deliver air to the condenser 11 to improve the heat exchange efficiency between the condensate and the air, these adjustments do not deviate from the principle of the present invention and are within the protection scope of the present invention.

[0041] The advantage of the above setting method is that, for example, when the cold water temperature in the water storage tank 20 is too high and the water temperature in the insulation box 30 reaches the standard, the second air flow guiding device 50 can be turned on to enable the refrigerant in the condenser 11 to exchange heat with the air, accelerating the heat dissipation speed of the condenser 11, improving the heat exchange efficiency, and meeting the cold water demand. When the cold water temperature reaches the standard, the second air flow guiding device 50 is not turned on, reducing unnecessary energy consumption and achieving energy conservation and environmental protection. The temperature of the condenser 11 can be accurately adjusted by controlling the working state of the second air flow guiding device 50, and then the outlet water temperature can be accurately controlled.

[0042] As a possible implementation, the heat pump water dispenser of the present invention further includes a water inlet pipeline 60, a first branch 61, a second branch 62, a normal temperature branch 63 and a four-way valve 64. The water inlet pipeline 60 is connected to the inlet of the four-way valve 64. The water inlet end of the first branch 61 is connected to the first outlet of the four-way valve 64. The water inlet end of the second branch 62 is connected to the second outlet of the four-way valve 64. The water inlet end of the normal temperature branch 63 is connected to the third outlet of the four-way valve 64. The water outlet ends of the first branch 61 and the second branch 62 are respectively connected to the water inlet of the water supply structure and the water inlet of the water storage tank 20. A filtering structure, such as a filter element, can be provided on the water inlet pipeline 60.

[0043] It can be understood that the four-way valve 64 of the present invention is a bypass valve. Among them, the on-off of the first outlet, the second outlet and the third outlet can be controlled respectively, that is, the inlet of the four-way valve 64 can be selectively communicated with and blocked from at least one of the first outlet, the second outlet and the third outlet.

[0044] After the water passes through the filtering structure via the water inlet pipeline 60, it enters the four-way valve 64 from the inlet of the four-way valve 64. When the inlet of the four-way valve 64 is connected to the first outlet, the second outlet, and the third outlet, the water is divided into three paths. The first path enters the first branch 61 from the first outlet, then enters the heat exchange water pipe from the first branch 61. The water in the heat exchange water pipe flows into the incubator 30 after being heated. When the water in the incubator 30 reaches the preset water level, the connection between the inlet of the four-way valve 64 and the first outlet can be blocked. The second path enters the second branch 62 from the second outlet, and then flows into the water storage tank 20. When the water level in the water storage tank 20 reaches the preset water level, the connection between the inlet of the four-way valve 64 and the second outlet can be blocked. The third path flows to the normal temperature branch 63 from the third outlet.

[0045] Among them, a cold water pipeline 80 can be set in the present invention. The water inlet end of the cold water pipeline 80 is connected to the outlet of the water storage tank 20, and the water outlet end of the cold water pipeline 80 is connected to the first on-off valve. In addition, a second on-off valve can be set on the normal temperature branch 63, so as to realize real-time water intake.

[0046] As a possible implementation manner, the heat pump water dispenser of the present invention further includes a boiling water pipe 70. The boiling water pipe 70 is connected to the water outlet of the incubator 30, and a heating device 71 is provided on the boiling water pipe 70. Further, a third on-off valve is provided at the water outlet end of the boiling water pipe 70 to realize water intake on demand by users. The specific form of the heating device 71 of the present invention is not limited, as long as it can heat the water. For example, the heating device 71 is a heating wire, an electric heating plate, a PTC ceramic heating sheet, etc. When the user needs boiling water, the heating device 71 can be started to further heat the hot water in the incubator 30 to obtain boiling water. When the user only needs hot water (i.e., warm water), the heating device 71 can be controlled to be turned off to obtain hot water.

[0047] Among them, the above-mentioned first on-off valve, second on-off valve, and third on-off valve can all be solenoid valves. Or they can be mechanical valves, such as faucets, etc.

[0048] It should be noted that the above-mentioned implementation manners are only used to illustrate the principle of the present invention, and are not intended to limit the protection scope of the present invention. Without departing from the principle of the present invention, those skilled in the art can adjust the above-mentioned structure so that the present invention can be applied to more specific application scenarios.

[0049] As an alternative embodiment, although the water supply structure of the present invention is introduced by taking the heat preservation box 30 and the hot water exchange pipe as an example, this is not intended to limit the protection scope of the present invention. As long as heat exchange can be carried out between the water supply structure and the condenser 11, the specific setting method can be adjusted. For example, the water supply structure includes a heat preservation box 30, and the heat preservation box 30 is used for heat exchange with the condenser 11. Among them, the present invention does not limit the specific setting method of heat exchange between the heat preservation box 30 and the condenser 11. For example, the condenser 11 is tubular, and the condenser 11 is wound around the inner wall of the heat preservation box 30. Or the condenser 11 is plate-shaped, etc., and it is arranged inside the heat preservation box 30, etc. As long as the heat preservation box 30 can carry out heat exchange with the condenser 11, these adjustments do not deviate from the principle of the present invention and are all within the protection scope of the present invention.

[0050] As an alternative embodiment, although the heat dissipation structure 201 of the present invention is introduced by taking the fin 201 as an example, this is not intended to limit the protection scope of the present invention. As long as the heat dissipation structure 201 can dissipate heat, its setting method can be adjusted. For example, the heat dissipation structure 201 can also be a heat dissipation coating, such as a graphene coating, or the heat dissipation structure 201 is a microchannel formed in the water storage tank 20, etc. These adjustments do not deviate from the principle of the present invention and are all within the protection scope of the present invention.

[0051] As an alternative embodiment, although the present invention is introduced by taking the evaporator 13 wound around the outer wall of the water storage tank 20 as an example, this is not intended to limit the protection scope of the present invention. As long as heat exchange between the evaporator 13 and the water storage tank 20 can be achieved, the specific setting method can be adjusted. For example, the evaporator 13 can also be wound around the inner wall of the water storage tank 20, etc. These adjustments do not deviate from the principle of the present invention and are all within the protection scope of the present invention.

[0052] As an alternative embodiment, although the evaporator 13 of the present invention is introduced by taking the tubular shape as an example, this is not intended to limit the protection scope of the present invention. As long as the water storage tank 20 can carry out heat exchange with the evaporator 13, the specific form of the evaporator 13 can be adjusted. For example, the evaporator 13 is a plate-shaped evaporator 13 and is attached to the outer wall of the water storage tank 20, etc. These adjustments do not deviate from the principle of the present invention and are all within the protection scope of the present invention.

[0053] As an alternative embodiment, the present invention can cancel the setting of the heat preservation box 30 and only set the hot water exchange pipe for heat exchange with the condenser 11. These adjustments do not deviate from the principle of the present invention and are all within the protection scope of the present invention.

[0054] So far, the technical solution of the present invention has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easily understood by those skilled in the art that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of the present invention.

Claims

1. A heat pump water dispenser, characterized in that, The heat pump water dispenser includes: A compressor, a condenser, a throttling device, an evaporator and a refrigerant circuit, where the compressor, the condenser, the throttling device and the evaporator are sequentially arranged on the refrigerant circuit; A water storage tank, which is used for heat exchange with the evaporator, and a heat dissipation structure is provided on the water storage tank; A water supply structure, which is used for heat exchange with the condenser.

2. The heat pump water dispenser according to claim 1, wherein The heat pump water dispenser further includes a first air flow guiding device, which is used for delivering air to the location of the water storage tank.

3. The heat pump water dispenser according to claim 1, wherein The heat dissipation structure is fins, and the fins are arranged on the outer periphery of the water storage tank.

4. The heat pump water dispenser according to claim 3, wherein The evaporator is tubular and is wound around the water storage tank.

5. The heat pump water dispenser according to claim 4, wherein The evaporator is wound around the outer wall of the water storage tank.

6. The heat pump water dispenser according to claim 5, wherein The middle part of the water storage tank divides the water storage tank into a first part and a second part, the evaporator is wound around the outer wall of the first part, and the fins are arranged on the outer periphery of the second part.

7. The heat pump water dispenser according to claim 1, wherein The water supply structure includes a heat preservation box and a heat exchange water pipe, the heat exchange water pipe is used for heat exchange with the condenser, and the water outlet of the heat exchange water pipe is connected to the water inlet of the heat preservation box.

8. The heat pump water dispenser according to claim 7, wherein The heat pump water dispenser further includes a second air flow guiding device, which is used for delivering air to the condenser.

9. The heat pump water dispenser according to claim 1, wherein The heat pump water dispenser further includes a water inlet pipeline, a first branch, a second branch, a normal temperature branch and a four-way valve. The water inlet pipeline is connected to the inlet of the four-way valve, the water inlet end of the first branch is connected to the first outlet of the four-way valve, the water inlet end of the second branch is connected to the second outlet of the four-way valve, the water inlet end of the normal temperature branch is connected to the third outlet of the four-way valve, and the water outlet ends of the first branch and the second branch are respectively connected to the water inlet of the water supply structure and the water inlet of the water storage tank.

10. The heat pump water dispenser according to claim 1, wherein The heat pump water dispenser further includes a boiling water pipe, the boiling water pipe is connected to the water outlet of the water supply structure, and a heating device is provided on the boiling water pipe.

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