Water tank structure and heat pump water heater

Abstract

The utility model relates to the field of water heaters, and provides a water tank structure and a heat pump water heater, the water tank structure comprises an inner container, a first collecting pipe, a second collecting pipe, a plurality of groups of micro-channels and an elastic piece, the second collecting pipe and the first collecting pipe are opposite and are arranged on the outer wall of the inner container at intervals, and the elastic piece is arranged on the outer wall of the inner container. The second collecting pipe is fixedly connected with the inner container; the multiple groups of micro-channels are communicated between the first collecting pipe and the second collecting pipe; the elastic piece is connected between the first collecting pipe and the second collecting pipe. The fitting degree between the condenser and the inner container can be effectively improved, so that the contact area between the condenser and the inner container is increased, the heat exchange efficiency is improved, meanwhile, disassembly and assembly between the condenser and the inner container can be facilitated, and the disassembly and assembly efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of water heaters, in particular to a water tank structure and a heat pump water heater. Background Art

[0002] Heat pump water heaters make full use of the heat energy in the air and have obvious advantages in energy saving and environmental protection. They have become a new generation of hot water production equipment after boilers, electric water heaters, gas water heaters and solar water heaters. Traditional heat pump water heaters are composed of compressors, evaporators, throttle valves, condensers, water tanks, connecting pipes and control systems. Most of the condensers use round copper tubes. One is to spirally coil the copper tubes on the outside of the water tank, and the other is to build the spiral winding tubes into the water tank. The water in the water tank continuously absorbs the condensation heat released by the refrigerant in the copper tubes, and finally reaches the set temperature.

[0003] However, the existing condenser has a poor fit with the inner tank, resulting in low heat exchange efficiency. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the related art. To this end, the utility model proposes a water tank structure, which improves the fit between the condenser and the inner tank, thereby increasing the contact area between the condenser and the inner tank, and further improving the heat exchange efficiency. At the same time, it can also facilitate the disassembly and assembly between the condenser and the inner tank, thereby improving the disassembly and assembly efficiency.

[0005] The utility model also provides a water tank structure.

[0006] The utility model also provides a heat pump water heater.

[0007] The water tank structure provided by the utility model includes:

[0008] Liner;

[0009] The first header;

[0010] a second manifold, the second manifold being opposite to the first manifold and spaced apart from each other on the outer wall of the inner container, the second manifold being fixedly connected to the inner container;

[0011] A plurality of groups of microchannels, wherein the plurality of groups of microchannels are connected between the first header and the second header;

[0012] An elastic member is connected between the first current collecting pipe and the second current collecting pipe.

[0013] According to an embodiment of the utility model, the water tank structure further includes a connecting piece, the outer wall of the inner tank is provided with a positioning column, and the second collecting pipe is connected and fixed to the positioning column via the connecting piece.

[0014] According to an embodiment of the present utility model, the connecting member includes a card interface and a positioning hole, the card interface is card-connected with the second collector, and the connecting member is connected and fixed to the positioning column through the positioning hole.

[0015] According to an embodiment of the present invention, the number of the elastic members is at least two, and at least two of the elastic members are arranged at intervals along the length direction of the first header and the second header; and / or,

[0016] The number of the positioning posts is at least two, and at least two of the positioning posts are spaced apart along the height direction of the inner container.

[0017] According to an embodiment of the utility model, the second manifold is provided with refrigerant inlets or refrigerant outlets at intervals, and a plurality of elastic members are correspondingly arranged at the bottom of the refrigerant inlets and the refrigerant outlets.

[0018] According to an embodiment of the present utility model, the water tank structure further includes a buckle, and at least one end of the elastic member is connected to the first header or the second header through the buckle.

[0019] According to one embodiment of the utility model, a hook is provided at least at one end of the elastic member, and the buckle includes a bayonet and a connecting arm, the bayonet is bayoneted with the first collecting pipe, the connecting arm extends between the first collecting pipe and the second collecting pipe, and a clamping hole is provided on the connecting arm, and the clamping hole cooperates with the hook to form a clamping connection.

[0020] According to one embodiment of the utility model, the water tank structure also includes a plurality of wall-mounted components, and the plurality of wall-mounted components are arranged on the outer wall surface of the inner tank between the first collecting pipe and the second collecting pipe, and the plurality of wall-mounted components are arranged at intervals along the height direction of the inner tank.

[0021] According to an embodiment of the utility model, the water tank structure includes an outer shell, the outer shell cover is arranged on the outer peripheral side of the inner tank, and the first collecting pipe, the second collecting pipe and the microchannel are arranged between the inner tank and the outer shell.

[0022] The utility model also provides a heat pump water heater, which comprises the water tank structure as described above.

[0023] The above one or more technical solutions in the embodiments of the utility model have at least one of the following technical effects:

[0024] The present application fixes the second header to the inner tank, and then connects the first header to the second header through an elastic member, so that the condenser can better adapt to the shape and size of the inner tank, reduce the matching problem caused by process accuracy and installation error, and the elastic preload provided by the elastic member can effectively improve the fit between the microchannel and the outer wall of the inner tank. And by improving the fit and contact area between the condenser and the inner tank, the heat exchange area can be increased, thereby improving the heat exchange efficiency. Then, the heat pump water heater can generate more heat under the same energy consumption, or reduce energy consumption under the same heat generation, thereby improving energy utilization efficiency. At the same time, since the elastic member is connected between the first header and the second header, the connection between the condenser and the inner tank can be made more convenient and quick. Thereby, the production cost and maintenance cost can be reduced, and the production efficiency and maintenance efficiency can also be improved. Therefore, the present application improves the fit and contact area between the condenser and the inner tank by setting an elastic member, thereby improving the heat exchange efficiency, and at the same time facilitates the disassembly and assembly between the condenser and the inner tank, and improves the disassembly and assembly efficiency.

[0025] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or related technologies, the drawings required for use in the embodiments or related technical descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 It is a structural schematic diagram of an embodiment of a heat pump water heater provided by the utility model;

[0028] Figure 2 It is a structural schematic diagram of a water tank structure and a head assembly provided by an embodiment of the utility model;

[0029] Figure 3 yes Figure 2 Enlarged view of point A in the middle.

[0030] Reference numerals:

[0031] 10. Heat pump water heater;

[0032] 100. Water tank structure;

[0033] 110, condenser assembly; 111, first header; 112, second header; 112a, refrigerant inlet; 112b, refrigerant outlet; 113, microchannel; 114, elastic member; 114a, hook; 115, buckle; 115a, bayonet; 115b, connecting arm; 115c, clamping hole;

[0034] 120, connector; 121, card interface; 122, positioning hole;

[0035] 130, liner; 131, positioning column;

[0036] 140. Wall-mounted components;

[0037] 200, nose assembly;

[0038] 300. Shell. DETAILED DESCRIPTION

[0039] The following is a further detailed description of the implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0040] In the description of the embodiments of the present utility model, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present utility model and simplifying the description, rather than indicating or implying 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 limiting the embodiments of the present utility model. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0041] In the description of the embodiments of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" 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. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific circumstances.

[0042] In the embodiments of the present invention, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0043] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model embodiment. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0044] Heat pump water heaters make full use of the heat energy in the air and have obvious advantages in energy saving and environmental protection. They have become a new generation of hot water production equipment after boilers, electric water heaters, gas water heaters and solar water heaters. Traditional heat pump water heaters are composed of compressors, evaporators, throttle valves, condensers, water tanks, connecting pipes and control systems. Most of the condensers are spirally coiled on the outside of the water tank, and the other is to build the spiral winding into the water tank. The water in the water tank continuously absorbs the condensation heat released by the refrigerant in the copper tube and eventually reaches the set temperature. However, the existing condenser has a poor fit with the inner tank, resulting in low heat exchange efficiency.

[0045] The utility model provides a water tank structure and a heat pump water heater.

[0046] In the utility model embodiment, refer to Figures 1 to 3 The water tank structure 100 includes an inner tank 130, a first manifold 111, a second manifold 112, a plurality of microchannels 113 and an elastic member 114. The second manifold 112 is opposite to the first manifold 111 and is arranged at an interval on the outer wall of the inner tank 130. The second manifold 112 is fixedly connected to the inner tank 130; the plurality of microchannels 113 are connected between the first manifold 111 and the second manifold 112; and the elastic member 114 is connected between the first manifold 111 and the second manifold 112.

[0047] The first header 111 and the second header 112 can collect and guide the flow of the refrigerant. The first header 111 and the second header 112 have similar structures and functions. One of the first header 111 and the second header 112 is movably arranged relative to the other side, that is, when the first header 111 or the second header 112 is installed, one of them is first installed and fixed with the inner liner 130, and the latter is then fixed relative to the former through the elastic member 114, so that the condenser can better adapt to the shape and size of the inner liner 130, thereby improving the fit between the two. Specifically, if the shape of the inner liner 130 changes, one side of the movable arrangement can be moved relative to the other side to maintain good contact with the inner liner 130. The microchannel 113 is used to increase the contact area between the condenser and the inner liner 130, thereby increasing the heat exchange area and improving the heat exchange efficiency. The function of the elastic member 114 is to provide a certain elastic preload so that the microchannel 113 can be closely attached to the outer wall of the inner liner 130, thereby further increasing the contact area between the microchannel 113 and the inner liner 130 and further improving the heat exchange efficiency. At the same time, it can also facilitate the disassembly and assembly of the condenser assembly 110 and the inner liner 130, reducing the production cost and maintenance cost.

[0048] The present application sets one of the first manifold 111 and the second manifold 112 to be movable relative to the other side, and then connects them through the elastic member 114, so that the condenser can better adapt to the shape and size of the inner tank 130, reduce the matching problem caused by process accuracy and installation error, and the elastic preload provided by the elastic member 114 can effectively improve the fit between the microchannel 113 and the outer wall of the inner tank 130. And by improving the fit and contact area between the condenser and the inner tank 130, the heat exchange area can be increased, thereby improving the heat exchange efficiency. Then, the heat pump water heater 10 can generate more heat under the same energy consumption, or reduce energy consumption under the same heat generation, thereby improving energy utilization efficiency. At the same time, since the elastic member 114 is connected between the first manifold 111 and the second manifold 112, the connection between the condenser and the inner tank 130 can be made more convenient and quick. Thereby, the production cost and maintenance cost can be reduced, and the production efficiency and maintenance efficiency can also be improved. Therefore, the present application improves the fit and contact area between the condenser and the inner tank 130 by providing an elastic member 114, thereby improving the heat exchange efficiency, while facilitating the disassembly and assembly between the condenser and the inner tank 130 and improving the disassembly and assembly efficiency.

[0049] Reference Figure 2 and Figure 3According to one embodiment of the utility model, the condenser assembly 110 further includes a buckle 115, and at least one end of the elastic member 114 is connected to the first header 111 or the second header 112 through the buckle 115. It is understandable that the design of the buckle 115 may vary depending on the specific application scenario and requirements. For example, it may be designed to be detachable or fixed as required, or it may be designed to be manually operated or automatically operated as required. In this embodiment, the buckle 115 is a connector 120, which is used to connect the elastic member 114 to the first header 111 or the second header 112. One end of the elastic member 114 can pass through the buckle 115 and be fixedly connected to the buckle 115, while the other end is fixedly connected to the first header 111 or the second header 112. In this way, the elastic member 114 can be easily installed and removed, and the stable connection between the elastic member 114 and the first header 111 and the second header 112 can also be ensured. In addition, the buckle 115 can also play a certain positioning and supporting role, making the condenser more stable and reliable during installation and use.

[0050] Reference Figure 3 According to an embodiment of the utility model, at least one end of the elastic member 114 is provided with a hook 114a, and the buckle 115 includes a bayonet 115a and a connecting arm 115b. The bayonet 115a is engaged with the first header 111 or the second header 112, and the connecting arm 115b extends between the first header 111 and the second header 112. The connecting arm 115b is provided with a clamping hole 115c, and the clamping hole 115c cooperates with the hook 114a to form a buckle 115 connection. It can be understood that the elastic member 114 can be provided with a hook 114a at one end, or at both ends. When the hook 114a is provided at one end, the other end can be directly or indirectly fixedly connected to the first header 111 or the second header 112. The hook 114a is used to cooperate with the buckle 115 to conveniently connect the elastic member 114 and the buckle 115 together, while also ensuring the stability and reliability of the connection. The connecting arm 115b is used to support and position the elastic member 114. The correct position and direction of the elastic member 114 in the condenser can be ensured. The connecting arm 115b is also provided with a clamping hole 115c, which can cooperate with the clamping hook 114a of the elastic member 114 to form a buckle 115 connection to ensure a stable connection between the elastic member 114 and the buckle 115, and the elastic member 114 can also be easily installed and removed.

[0051] Reference Figure 2According to an embodiment of the utility model, the number of elastic members 114 is at least two, and at least two elastic members 114 are arranged at intervals along the height direction of the first header 111 and the second header 112. In this way, the contact area and fit between the condenser and the inner tank 130 can be increased, because the multiple elastic members 114 can provide more support points, so that the condenser can better adapt to the shape and size of the inner tank 130. Among them, at least two elastic members 114 are arranged at intervals along the height direction of the first header 111 and the second header 112, which can further increase the contact area and fit between the condenser and the inner tank 130. By arranging the elastic members 114 at intervals in the height direction, the condenser can better fit the inner tank 130 in the height direction, thereby increasing the heat exchange area and improving the heat exchange efficiency. In addition, the stability of the condenser can also be improved. Since the multiple elastic members 114 are arranged at intervals along the height direction, more support points can be provided, thereby increasing the stability of the condenser. At the same time, the elastic member 114 can be conveniently installed and removed, because the plurality of elastic members 114 can be more easily connected to and removed from the first header 111 and the second header 112. At the same time, the production cost and the maintenance cost can be reduced.

[0052] Reference Figure 2 According to an embodiment of the utility model, the first header 111 or the second header 112 is arranged at intervals at the refrigerant inlet 112a or the refrigerant outlet 112b, and a plurality of elastic members 114 are correspondingly arranged at the bottom of the refrigerant inlet 112a and the refrigerant outlet 112b. In this way, the elastic member 114 can play a greater role in the connection and fixation between the condenser and the inner liner 130. Since the elastic member 114 is located at the bottom of the refrigerant inlet 112a and the outlet, it can better adapt to the shape and size of the inner liner 130, and increase the fit and contact area between the condenser and the inner liner 130. In addition, the connection stability of the condenser can also be improved. Since the plurality of elastic members 114 are correspondingly arranged at the bottom of the refrigerant inlet 112a and the outlet, more support points can be provided, thereby increasing the stability of the condenser. At the same time, this arrangement form can also facilitate the installation and removal of the elastic member 114, because the plurality of elastic members 114 can be more easily connected and removed with the first header 111 and the second header 112, reducing production costs and maintenance costs.

[0053] Reference Figure 2 and Figure 3According to an embodiment of the utility model, the water tank structure 100 further includes a connector 120, an outer wall positioning column 131 of the inner tank 130, and the first header 111 or the second header 112 is connected and fixed by the connector 120 and the positioning column 131. In this embodiment, the correct connection and stability of the inner tank 130 and the condenser can be ensured by the coordinated use of the connector 120 and the positioning column 131. The positioning column 131 on the outer wall of the inner tank 130 can be a raised structure for cooperating with the connector 120. It is convenient to connect and disassemble the inner tank 130 with the condenser. At the same time, the positioning column 131 can also ensure the stability and reliability of the inner tank 130 during installation and use. The first header 111 or the second header 112 can be connected and fixed by the connector 120 and the positioning column 131 to ensure the correct connection and stability between the condenser and the inner tank 130. It is also convenient to install and disassemble the condenser and the inner tank 130, thereby reducing production costs and maintenance costs.

[0054] Reference Figure 2 According to an embodiment of the utility model, the number of positioning posts 131 is at least two, and at least two positioning posts 131 are arranged at intervals along the height direction of the inner tank 130. The connector 120 includes a card interface 121 and a positioning hole 122. The card interface 121 is connected to the first manifold 111 or the second manifold 112 by a buckle 115, and the connector 120 is connected and fixed to the positioning posts 131 through the positioning hole 122. In this embodiment, the number of positioning posts 131 is at least two, and can be set according to actual needs, and is not specifically limited here. Multiple positioning posts 131 are arranged at intervals along the height direction of the inner tank 130, so that when the condenser is installed around the outside of the inner tank 130, a more uniform fixing anchor point can be increased, so that the microchannel 113 can better fit the outer wall of the inner tank 130, thereby increasing the heat exchange area and improving the heat exchange efficiency.

[0055] Specifically, the connector 120 includes a card interface 121 and a positioning hole 122, wherein the card interface 121 is connected to the first manifold 111 or the second manifold 112 by a snap 115, which can ensure a stable connection between the condenser and the inner liner 130. The positioning hole 122 is used to connect and fix the connector 120 to the positioning column 131, and this connection method can further increase the stability between the condenser assembly 110 and the inner liner 130. In this way, the present embodiment can align and fix the connector 120 with the inner liner 130 in the height direction through the use of the positioning hole 122 and the positioning column 131, thereby ensuring the correct connection and stability between the condenser and the inner liner 130. At the same time, the condenser and the inner liner 130 can be easily installed and disassembled, thereby reducing production costs and maintenance costs.

[0056] Reference Figures 1 to 3According to an embodiment of the utility model, the water tank structure 100 further includes a plurality of wall-mounted components 140, which are arranged on the outer wall surface of the inner tank 130 between the first header 111 and the second header 112, and the plurality of wall-mounted components 140 are arranged at intervals along the height direction of the inner tank 130. In this embodiment, a plurality of wall-mounted components 140 are arranged on the inner tank 130, so as to facilitate the wall mounting of the heat pump water heater 10, and a plurality of wall-mounted components can improve the firmness of the wall mounting. It can be understood that the wall-mounted component 140 can be a raised or recessed structure for matching and connecting with the inner tank 130. In order to prevent the wall-mounted component 140 from interfering with the condenser component 110 wrapped on the outer wall of the inner tank 130 during installation, the embodiment of this city arranges a plurality of wall-mounted components 140 on the outer wall surface of the inner tank 130 between the first header 111 and the second header 112, so as to ensure the stable connection and reliability between the wall-mounted component 140, the condenser and the inner tank 130.

[0057] The utility model also provides a heat pump water heater 10, which includes a shell, a head assembly 200 and the above-mentioned water tank structure 100, wherein the specific structure of the water tank structure 100 refers to the above-mentioned embodiment; it can be understood that since the above-mentioned water tank structure 100 is used in the heat pump water heater 10, the embodiment of the heat pump water heater 10 includes all technical solutions of all embodiments of the above-mentioned water tank structure 100, and the technical effects achieved are also exactly the same, which will not be repeated here.

[0058] Specifically, the heat pump water heater 10 includes a head assembly 200, an inner tank 130, an outer shell 300, and a heat pump system, etc. The outer shell 300 has a cavity inside, and the inner tank 130 and the heat pump system are both located inside the outer shell 300. The inner tank 130 is used to hold water and is made of a heat-conducting material. The heat pump system is used to heat the water in the inner tank 130, and the outer shell 300 protects the inner tank 130 and the heat pump system. The inner tank 130 can be an integrally formed setting, or an end cap can be provided at one end, or it can include a tank body and end caps provided at both ends of the tank body. The heat pump system can include a condenser assembly 110 and a heat pump host mainly composed of a compressor, a throttling device, and an evaporator. Specifically, the compressor has an exhaust port and an air return port, the air outlet of the evaporator is connected to the air return port of the compressor, the exhaust port of the compressor is connected to the refrigerant inlet 112a of the condenser assembly 110 through the refrigerant inlet pipe, the refrigerant outlet 112b of the condenser assembly 110 is connected to the air inlet of the evaporator through the refrigerant outlet pipe, and the throttling device is arranged between the condenser and the evaporator. When the heat pump water heater 10 is running, the refrigerant in the evaporator absorbs the heat of the surrounding air and then heats up and vaporizes. The heated and vaporized refrigerant enters the compressor and becomes a high-temperature and high-pressure gas under the action of the compressor. It is then transported to the pipeline of the condenser assembly 110 through the refrigerant inlet pipe. The high-temperature and high-pressure gaseous refrigerant directly or indirectly exchanges heat with the water in the inner tank 130 in the condenser assembly 110, so that the temperature of the water in the inner tank 130 is increased. Thereafter, the refrigerant flowing out of the condenser assembly 110 is transported to the throttling device through the refrigerant outlet pipe. The refrigerant is reduced in pressure and throttled by the throttling device and then flows back to the evaporator, thereby starting the next cycle. This reciprocating cycle can eventually produce hot water.

[0059] Finally, it should be noted that the above implementation modes are only used to illustrate the present invention, rather than to limit the present invention. Although the present invention is described in detail with reference to the embodiments, a person skilled in the art should understand that various combinations, modifications or equivalent replacements of the technical solutions of the present invention do not depart from the spirit and scope of the technical solutions of the present invention, and should be included in the scope of the claims of the present invention.

Claims

1. A water tank structure, characterized in that: include: Liner; The first header; a second manifold, the second manifold being opposite to the first manifold and spaced apart from each other on the outer wall of the inner container, the second manifold being fixedly connected to the inner container; A plurality of groups of microchannels, wherein the plurality of groups of microchannels are connected between the first header and the second header; An elastic member is connected between the first current collecting pipe and the second current collecting pipe.

2. The water tank structure according to claim 1, characterized in that: The water tank structure also includes a connecting piece, a positioning column is provided on the outer wall of the inner tank, and the second collecting pipe is connected and fixed to the positioning column through the connecting piece.

3. The water tank structure according to claim 2, characterized in that: The connecting piece comprises a card interface and a positioning hole, the card interface is card-connected with the second current collecting pipe, and the connecting piece is connected and fixed with the positioning column through the positioning hole.

4. The water tank structure according to any one of claims 2-3, characterized in that: The number of the elastic members is at least two, and at least two of the elastic members are arranged at intervals along the length direction of the first header and the second header; and / or, The number of the positioning posts is at least two, and at least two of the positioning posts are spaced apart along the height direction of the inner container.

5. The water tank structure according to claim 4, characterized in that: The second manifold is provided with refrigerant inlets or refrigerant outlets at intervals, and a plurality of elastic members are correspondingly arranged at the bottom of the refrigerant inlets and the refrigerant outlets.

6. The water tank structure according to claim 4, characterized in that: The water tank structure further comprises a buckle, and at least one end of the elastic member is connected to the first header or the second header via the buckle.

7. The water tank structure according to claim 6, characterized in that: A hook is provided at at least one end of the elastic member, and the buckle includes a bayonet and a connecting arm, the bayonet is engaged with the first collecting pipe, the connecting arm extends between the first collecting pipe and the second collecting pipe, and a clamping hole is provided on the connecting arm, and the clamping hole cooperates with the hook to form a clamping connection.

8. The water tank structure according to any one of claims 1 to 3, characterized in that: The water tank structure also includes a plurality of wall-mounted components, which are arranged on the outer wall surface of the inner tank between the first collecting pipe and the second collecting pipe, and are arranged at intervals along the height direction of the inner tank.

9. The water tank structure according to any one of claims 1 to 3, characterized in that: The water tank structure comprises an outer shell, the outer shell is arranged on the outer peripheral side of the inner tank, and the first collecting pipe, the second collecting pipe and the microchannel are arranged between the inner tank and the outer shell.

10. A heat pump water heater, characterized in that: Comprising the water tank structure according to any one of claims 1 to 9.

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