A water heater tank and a water heater

Abstract

The application relates to a water tank of a water heater and the water heater. The water tank comprises a heat exchanger and a water storage assembly with a water storage cavity. At least part of the outer cavity wall of the water storage cavity is used to form a containing space for containing the heat exchanger. At least two surfaces of the heat exchanger are in contact with the outer cavity wall of the water storage cavity. The application forms the containing space by using at least part of the outer cavity wall of the water storage cavity, and the heat exchanger is arranged in the containing space, so that at least two surfaces of the heat exchanger are in contact with the outer cavity wall of the water storage cavity. Therefore, the contact area between the heat exchanger and the water storage cavity can be enlarged, the liquid in the water storage cavity can be fully exchanged by the heat exchanger, and the heat exchange efficiency is improved.

Description

Technical Field

[0001] This application relates to the field of water heater technology, and in particular to a water heater tank and a water heater. Background Technology

[0002] In recent years, air source heat pump water heaters have become increasingly widely used. Compared with traditional water heaters, air source heat pump water heaters have the advantages of high efficiency and energy saving. Air source heat pump water heaters include split-type and integrated types. Among them, split-type water heaters are simpler in structure, cheaper, and more convenient to use than integrated types, and therefore have gained wider application.

[0003] Split-type heating systems mainly include static heating and circulating heating systems. Static heating systems include internal heating and external heating systems. Among them, with the internal heating system, scale and even corrosion can easily form on the built-in coils over time, which may affect the use of the system.

[0004] For external heating, the safety during use is relatively high. However, in current external heating water heaters, the heat exchanger plate is located outside the water storage component, resulting in a smaller contact area between the heat exchanger and the water storage component, which affects the heat exchange efficiency. Summary of the Invention

[0005] Therefore, it is necessary to provide a water tank and water heater to address the problem of low heat exchange efficiency in current external heating water heaters.

[0006] In a first aspect, this application provides a water tank for a water heater, comprising:

[0007] Heat exchanger;

[0008] A water storage assembly has a water storage cavity, at least a portion of the outer cavity wall of the water storage cavity enclosing a receiving space for accommodating the heat exchanger, and at least two surfaces of the heat exchanger contacting the outer cavity wall of the water storage cavity.

[0009] In some embodiments, the water storage assembly includes a first inner liner and a second inner liner that are detachably connected to each other. The first inner liner has a first sub-cavity, and the second inner liner has a second sub-cavity. The first sub-cavity and the second sub-cavity communicate with each other and together define the water storage cavity.

[0010] The heat exchanger is sandwiched between the first inner liner and the second inner liner.

[0011] In some embodiments, the first inner liner has a first wall, the second inner liner has a second wall, the first wall and the second wall are respectively configured as the outer cavity walls of the first sub-cavity and the second sub-cavity, and both are in contact with the heat exchanger.

[0012] In some embodiments, the heat exchanger is configured as a plate structure, and two opposing surfaces of the heat exchanger along its own thickness direction are respectively attached to the first wall and the second wall.

[0013] In some embodiments, the first wall is configured as a plane, and / or the second wall is configured as a plane.

[0014] In some embodiments, the first inner liner has an inlet communicating with the first sub-cavity, the second inner liner has an outlet communicating with the second sub-cavity, and the inlet is located below the outlet along the direction of gravity.

[0015] In some embodiments, the first inner tank has a first opening communicating with the first sub-cavity, and the second inner tank has a second opening communicating with the second sub-cavity. The water heater tank also includes a connecting pipe, one end of which is connected to the first opening, and the other end of which extends through the second opening to the bottom of the second sub-cavity.

[0016] In some embodiments, the water tank of the water heater further includes a sealing element, which is sealed between the connecting pipe and the inner wall of the first opening, and / or between the connecting pipe and the inner wall of the second opening.

[0017] In some embodiments, the first opening is formed on the first wall, the second opening is formed on the second wall, and the seal is interference-fitted between the first wall and the second wall.

[0018] In some embodiments, the water heater tank further includes a housing having an inner cavity for accommodating the heat exchanger and the water storage assembly.

[0019] In some embodiments, the water heater tank further includes an insulation layer that fills the space between the housing and the water storage assembly.

[0020] In some embodiments, the shell is configured to be cuboid in shape.

[0021] Secondly, this application provides a water heater, including the water heater tank as described above.

[0022] The aforementioned water tank and water heater are enclosed by at least part of the outer cavity wall of the water storage chamber to form a receiving space, and a heat exchanger is placed in the receiving space so that at least two surfaces of the heat exchanger are in contact with the outer cavity wall of the water storage chamber, thereby increasing the contact area between the heat exchanger and the water storage chamber, and the heat exchanger can perform all-round heat exchange on the liquid in the water storage chamber, thereby improving the heat exchange efficiency. Attached Figure Description

[0023] Figure 1This is an exploded view of the water tank of a water heater in some embodiments of this application;

[0024] Figure 2 This is an exploded view of the water tank of a water heater in some embodiments of this application;

[0025] Figure 3 This is a cross-sectional view of the water tank of the water heater in some embodiments of this application;

[0026] Figure 4 This is a schematic diagram of the installation of a water heater tank in a house according to some embodiments of this application;

[0027] Explanation of reference numerals in the attached drawings: 100, water heater tank; 10, heat exchanger; 20, water storage assembly; 30, connecting pipe; 40, seal; 50, shell; 60, insulation layer; 21, water storage cavity; 22, accommodating space; 23, first inner tank; 24, second inner tank; 231, first sub-cavity; 232, first wall; 233, water inlet; 234, first opening; 241, second sub-cavity; 242, second wall; 243, water outlet; 244, second opening; a, direction of gravity. Detailed Implementation

[0028] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0029] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0030] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0031] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0032] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0033] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0034] See Figure 1 , Figure 2 as well as Figure 3 One embodiment of this application provides a water tank 100 for a water heater, including a heat exchanger 10 and a water storage assembly 20. The water storage assembly 20 has a water storage cavity 21, and at least a portion of the outer cavity wall of the water storage cavity 21 encloses a receiving space 22 for accommodating the heat exchanger 10. At least two surfaces of the heat exchanger 10 are in contact with the outer cavity wall of the water storage cavity 21.

[0035] It should be noted that the water tank 100, as part of the overall structure of the water heater, is mainly used to provide hot water during use. The heat exchanger 10 refers to a component that can achieve heat exchange to heat the liquid in the water heater. The water storage chamber 21 inside the water storage assembly 20 can be used to store liquid so that it can be heated under the action of the heat exchanger 10.

[0036] The receiving space 22 formed by at least a portion of the outer cavity wall of the water storage cavity 21 can be used to accommodate the heat exchanger 10. When the heat exchanger 10 is accommodated in the receiving space 22, at least two surfaces of the heat exchanger 10 are in contact with the outer cavity wall of the water storage cavity 21 (i.e., the inner wall of the receiving space 22), thereby enabling the heat exchanger 10 to heat the liquid stored in the water storage cavity 21.

[0037] In current air source water heaters, when the heat exchanger 10 is located outside the water storage component 20, the heat exchanger 10 is usually coiled around the water storage cavity 21 of the water storage component 20. At this time, only one surface of the heat exchanger 10 is in contact with the water storage component 20, and the contact area between the two is small, resulting in low heat exchange efficiency of the heat exchanger 10.

[0038] Therefore, in the embodiments of this application, since the heat exchanger 10 is disposed in the accommodating space 22, the heat exchanger 10 can have at least two surfaces in contact with the outer wall of the water storage cavity 21, thereby increasing the contact area between the heat exchanger 10 and the water storage cavity 21 and improving the heat exchange efficiency of the heat exchanger 10 for the liquid in the water storage cavity 21.

[0039] In some embodiments, the water storage assembly 20 includes a first inner tank 23 and a second inner tank 24 detachably connected to each other. The first inner tank 23 has a first sub-cavity 231, and the second inner tank 24 has a second sub-cavity 241. The first sub-cavity 231 and the second sub-cavity 241 communicate with each other and together define a water storage cavity 21. A heat exchanger 10 is sandwiched between the first inner tank 23 and the second inner tank 24.

[0040] The first sub-cavity 231 of the first inner liner 23 and the second sub-cavity 241 of the second inner liner 24 are both used to store liquid, and the first sub-cavity 231 and the second sub-cavity 241 are interconnected, thus forming a water storage cavity 21 together.

[0041] By sandwiching the heat exchanger 10 between the first inner liner 23 and the second inner liner 24, the two opposing surfaces of the heat exchanger 10 can contact the outer walls of the first sub-cavity 231 and the second sub-cavity 241, respectively, thereby increasing the contact area between the heat exchanger 10 and the water storage cavity 21 and improving the heat exchange efficiency.

[0042] In addition, the first inner liner 23 and the second inner liner 24 are detachably connected so that the heat exchanger 10 can be installed between the first inner liner 23 and the second inner liner 24, which facilitates disassembly and assembly.

[0043] In one specific embodiment, the first inner liner 23 and the second inner liner 24 can be detachably connected by bolts. Specifically, the heat exchanger 10 is placed between the first inner liner 23 and the second inner liner 24, and the heat exchanger 10 is in contact with both the first inner liner 23 and the second inner liner 24. Then, the first inner liner 23 and the second inner liner 24 are fastened together by bolts, so that the heat exchanger 10, the first inner liner 23, and the second inner liner 24 are tightly connected to form an integral structure.

[0044] During this process, the heat exchanger 10 can be made to fit tightly with the first inner liner 23 and the second inner liner 24, thereby better heating the liquid in the first sub-cavity 231 and the second sub-cavity 241.

[0045] Understandably, the first inner liner 23 and the second inner liner 24 can also be detachably connected by other connection methods, such as by snap-fit ​​connection or other connection methods, which will not be elaborated here.

[0046] It should be noted that in the above embodiments, the water storage assembly 20 includes two interconnected inner tanks. Understandably, in some other embodiments, the water storage assembly 20 may also include three or more inner tanks detachably connected to each other. For example, when the water storage assembly 20 includes three inner tanks, each inner tank has a sub-cavity for water storage, and the three inner tanks together enclose a receiving space 22. A heat exchanger 10 is disposed within the receiving space 22 and contacts the outer walls of the three sub-cavities respectively, in order to heat the liquid in each sub-cavity.

[0047] In some embodiments, the first inner liner 23 has a first wall 232 and the second inner liner 24 has a second wall 242. The first wall 232 and the second wall 242 are respectively configured as the outer cavity walls of the first sub-cavity 231 and the second sub-cavity 241, and both are in contact with the heat exchanger 10.

[0048] Specifically, the first wall 232 of the first inner liner 23 and the second wall 242 of the second inner liner 24 face each other, and the heat exchanger 10 is located between the first wall 232 and the second wall 242. Furthermore, the first wall 232 and the second wall 242 are the outer walls of the first sub-cavity 231 and the second sub-cavity 241, respectively. Therefore, when the heat exchanger 10 contacts the first wall 232 and the second wall 242, it can better exchange heat with the liquid inside the first sub-cavity 231 and the second sub-cavity 241, thereby achieving heating.

[0049] In some embodiments, the heat exchanger 10 is configured as a plate structure, and two opposing surfaces of the heat exchanger 10 along its own thickness direction are respectively attached to the first wall 232 and the second wall 242.

[0050] Specifically, the heat exchanger 10 is configured as a plate structure, that is, the heat exchanger 10 has a relatively thin thickness, and the two opposing surfaces of the heat exchanger 10 along its own thickness direction are respectively attached to the first wall 232 and the second wall 242, that is, the heat exchanger 10 is sandwiched between the first wall 232 and the second wall 242.

[0051] Since the heat exchanger 10 has a plate-like structure, when the first wall 232 and the second wall 242 are connected to each other, the heat exchanger 10 can be wrapped between the first wall 232 and the second wall 242, so that the heat exchanger 10 can have maximum contact with the first inner liner 23 and the second inner liner 24, thereby improving the heat exchange efficiency.

[0052] In some embodiments, the first wall 232 is configured as a plane, and / or the second wall 242 is configured as a plane.

[0053] Specifically, by setting the first wall 232 as a plane, the heat exchanger 10 can fit more tightly with the first wall 232 when in contact, thereby improving the heating efficiency of the heat exchanger 10 for the liquid in the first sub-cavity 231.

[0054] Similarly, by making the second wall 242 a plane, the heat exchanger 10 can fit more tightly with the second wall 242 when in contact, thereby improving the heating efficiency of the heat exchanger 10 for the liquid in the second sub-cavity 241.

[0055] Understandably, in some other embodiments, the first wall 232 and / or the second wall 242 may also be constructed as curved or other shaped surfaces, and the surfaces of the heat exchanger 10 that contact the first wall 232 and the second wall 242 are configured to be in a shape that mates with the first wall 232 and the second wall 242 so that the heat exchanger 10 can fit better with the first wall 232 and the second wall 242.

[0056] In some embodiments, the first inner liner 23 has an inlet 233 communicating with the first sub-cavity 231, and the second inner liner 24 has an outlet 243 communicating with the second sub-cavity 241, and the inlet 233 is located below the outlet 243 along the gravity direction a.

[0057] Specifically, the heat exchanger 10 is disposed between the first inner liner 23 and the second inner liner 24. Furthermore, the first sub-cavity 231 in the first inner liner 23 and the second sub-cavity 241 in the second inner liner 24 are interconnected. Thus, cold water is injected into the first sub-cavity 231 through the inlet 233 on the first inner liner 23, and the cold water flows through the first inner liner 23 into the second inner liner 24, and flows out through the outlet 243 on the second inner liner 24 for use.

[0058] In the above process, when cold water enters the first sub-cavity 231 through the inlet 233, the heat exchanger 10 heats the cold water entering the first sub-cavity 231 because it is fitted against the first wall 232 (i.e., the outer wall of the first sub-cavity 231). Simultaneously, when the water in the first sub-cavity 231 enters the second sub-cavity 241, the heat exchanger 10 reheats the water in the second sub-cavity 241 because it is fitted against the second wall 242 (i.e., the outer wall of the second sub-cavity 241), thus achieving sufficient heating.

[0059] Furthermore, in the direction of gravity a, the inlet 233 is located below the outlet 243. Therefore, when cold water enters the first sub-cavity 231 and the second sub-cavity 241 from the inlet 233, the cold water can accumulate sufficiently in both sub-cavities and be fully heated by the heat exchanger 10. When the water in the first sub-cavity 231 and the second sub-cavity 241 accumulates to a height equal to or exceeding that of the outlet 243, it ensures that the water in the first sub-cavity 231 and the second sub-cavity 241 has been sufficiently heated to the target temperature, and then discharged from the outlet 243.

[0060] In addition, in order to improve the space utilization rate of the first sub-cavity 231 and the second sub-cavity 241, the water inlet 233 can be set at the bottom of the first inner liner 23 and the water outlet 243 can be set at the top of the second inner liner 24, so that the liquid can completely fill the first sub-cavity 231 and the second sub-cavity 241 and avoid wasting space.

[0061] In some embodiments, a first opening 234 communicating with a first sub-cavity 231 is provided on the first inner tank 23, and a second opening 244 communicating with a second sub-cavity 241 is provided on the second inner tank 24. The water heater tank 100 also includes a connecting pipe 30, one end of which is connected to the first opening 234, and the other end extends through the second opening 244 to the bottom of the second sub-cavity 241.

[0062] The connecting pipe 30 connects the first opening 234 and the second opening 244, thereby enabling the connection between the first sub-cavity 231 and the second sub-cavity 241, so that the cold water entering the first sub-cavity 231 from the inlet 233 can flow into the second sub-cavity 241 through the connecting pipe 30.

[0063] Specifically, one end of the connecting pipe 30 is connected to the first opening 234, and the other end extends through the second opening 244 to the bottom of the second sub-cavity 241. Thus, water in the first sub-cavity 231 flows into the connecting pipe 30 from the first opening 234, and then flows directly into the bottom of the second sub-cavity 241 under the guidance of the connecting pipe 30.

[0064] Understandably, since the inlet 233 is located at the bottom of the first inner tank 23, while the outlet 243 is higher than the inlet 233 and located at the top of the second inner tank 24, cold water enters the first sub-cavity 231 from the bottom, continuously heats up under the heating action of the heat exchanger 10, and finally, hot water flows out from the top through the outlet 243. That is, in the first sub-cavity 231 and the second sub-cavity 241, cold water is located in the lower layer, and hot water is located in the upper layer.

[0065] Therefore, by connecting the pipe 30 to directly guide the water in the first sub-cavity 231 to the bottom of the second sub-cavity 241, it is possible to avoid the mixing of lower temperature water with higher temperature hot water, which would cause the water flowing out of the outlet 243 to fluctuate in temperature and affect the user experience.

[0066] It should be noted that the first opening 234 and the second opening 244 can be located at any mutually cooperating position on the first inner tank 23 and the second inner tank 24, and the two can be connected by the connecting pipe 30. However, in order to maximize space utilization, the first opening 234 and the second opening 244 can be located at the top of the first inner tank 23 and the second inner tank 24, so that after cold water enters the first sub-cavity 231 from the inlet 233, it can completely fill the first sub-cavity 231, and be fully heated by the heat exchanger 10 during the filling process.

[0067] In some embodiments, the water heater tank 100 further includes a sealing element 40, which is sealed between the inner wall of the connecting pipe 30 and the first opening 234, and / or between the inner wall of the connecting pipe 30 and the second opening 244.

[0068] Specifically, the sealing element 40 is sealed between the connecting pipe 30 and the inner wall of the first opening 234. When the liquid in the first sub-cavity 231 flows into the connecting pipe 30 from the first opening 234, it can prevent the liquid from leaking from the gap between the connecting pipe 30 and the first inner liner 23, thereby improving the sealing performance of the first inner liner 23.

[0069] Similarly, the sealing element 40 is sealed between the connecting pipe 30 and the inner wall of the second opening 244. When liquid flows into the second sub-cavity 241 through the connecting pipe 30, it can prevent liquid from leaking from the gap between the connecting pipe 30 and the second inner liner 24, thereby improving the sealing performance of the second inner liner 24.

[0070] Therefore, by setting the sealing element 40, the sealing effect between the connecting pipe 30 and the first inner liner 23 and the second inner liner 24 can be achieved.

[0071] In some embodiments, a first opening 234 is formed on a first wall 232, a second opening 244 is formed on a second wall 242, and a seal 40 is interference-fitted between the first wall 232 and the second wall 242.

[0072] Specifically, a first opening 234 is formed on a first wall 232, and a second opening 244 is formed on a second wall 242, with the positions of the first opening 234 and the second opening 244 corresponding to each other. Furthermore, a seal 40 is interference-fitted between the first wall 232 and the second wall 242.

[0073] Furthermore, the seal 40 can be configured as an elastic seal 40, for example, made of elastic materials such as rubber or silicone, so that the seal 40 can be interference-fitted between the first wall 232 and the second wall 242.

[0074] Therefore, when the first inner liner 23 and the second inner liner 24 are connected to each other, the sealing member 40 can be compressed and sandwiched between the first wall 232 and the second wall 242, thereby improving the sealing effect on the first opening 234 and the second opening 244.

[0075] In addition, it should be noted that the positions of the first opening 234 and the second opening 244 are offset from the heat exchanger 10 so that the first opening 234 and the second opening 244 can be connected through the connecting pipe 30 without affecting the heat exchanger 10.

[0076] In some embodiments, the water heater tank 100 further includes a housing 50 having an inner cavity for accommodating the heat exchanger 10 and the water storage assembly 20.

[0077] Specifically, the heat exchanger 10 is sandwiched between the first inner tank 23 and the second inner tank 24, and then the heat exchanger 10, the first inner tank 23 and the second inner tank 24 are housed together in the inner cavity of the shell 50. Thus, the shell 50 provides a certain degree of protection for the structure of the heat exchanger 10, the first inner tank 23 and the second inner tank 24, thereby improving the overall structural stability of the water heater tank 100.

[0078] In one specific embodiment, the housing 50 may include a detachably connected base plate and an upper shell. First, the heat exchanger 10 is placed between the first inner tank 23 and the second inner tank 24. The heat exchanger 10, the first inner tank 23, and the second inner tank 24 are assembled into a single unit using bolts, and then this unit is fixed to the base plate using bolts. Finally, the upper shell is placed over the unit formed by the heat exchanger 10, the first inner tank 23, and the second inner tank 24 from top to bottom, and the upper shell is fixed to the base plate using bolts. This completes the assembly of the water heater tank 100.

[0079] In some embodiments, the water heater tank 100 further includes an insulation layer 60, which is filled between the housing 50 and the water storage component 20.

[0080] The insulation layer 60 effectively insulates the liquids in the first sub-cavity 231 and the second sub-cavity 241. After being heated by the heat exchanger 10, it reduces heat loss and extends the hot water retention time. Furthermore, the insulation layer 60 also reduces the influence of the external ambient temperature on the liquid temperature in the first sub-cavity 231 and the second sub-cavity 241, making the liquid temperature more stable.

[0081] Specifically, during the assembly process, after the upper shell is fixed to the base plate with bolts, the shell 50 and the heat exchanger 10, the first inner liner 23 and the second inner liner 24 inside the shell 50 are foamed as a whole to form an insulation layer 60 between the shell 50 and the water storage component 20.

[0082] like Figure 4 As shown, in some embodiments, the shell 50 is constructed in the shape of a cuboid. Thus, when the first inner tank 23, the second inner tank 24, and the heat exchanger 10 are assembled together into the inner cavity of the shell 50 to form the overall structure of the water heater tank 100, the outer contour of the water heater tank 100 is a cuboid structure.

[0083] It should be noted that traditional water heater tanks typically require a large installation area. Most modern homes are quite compact, lacking the space for water heater tanks, which significantly limits the use of air source heat pump water heaters.

[0084] Based on this, the water heater tank 100 of this application is constructed as a cuboid structure, which allows for diverse placement within the house and improves space utilization. Furthermore, installation positions can be pre-reserved in non-load-bearing walls according to the existing renovation, allowing the water heater tank 100 to be embedded in the wall, thereby reducing the floor space occupied by the water heater tank 100.

[0085] Based on the same concept as the water heater tank 100 described above, this application also provides a water heater, including the water heater tank 100 as described above.

[0086] In practical use, cold water is injected into the first sub-cavity 231 through the inlet 233. The cold water gradually accumulates in the first sub-cavity 231. At the same time, the heat exchanger 10 heats the cold water in the first sub-cavity 231, raising its temperature. When the water level in the first sub-cavity 231 is equal to or greater than the height of the first opening 234, the water in the first sub-cavity 231 enters the second sub-cavity 241 through the connecting pipe 30, and flows directly to the bottom of the second sub-cavity 241 under the guidance of the connecting pipe 30.

[0087] As the liquid volume in the second sub-cavity 241 increases, the liquid level in the second sub-cavity 241 gradually rises. During this process, the heat exchanger 10 continuously heats the water in the second sub-cavity 241, raising its temperature. When the liquid level is equal to or higher than the height of the outlet 243, the outlet 243 is opened, and the hot water heated to the target temperature can be discharged from the outlet 243 for user use.

[0088] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0089] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A water tank for a water heater, characterized in that, include: Heat exchanger (10); A water storage assembly (20) has a water storage cavity (21), at least a portion of the outer cavity wall of the water storage cavity (21) encloses a receiving space (22) for accommodating the heat exchanger (10), and at least two surfaces of the heat exchanger (10) are in contact with the outer cavity wall of the water storage cavity (21). The water storage assembly (20) includes a first inner liner (23) and a second inner liner (24) detachably connected to each other. The first inner liner (23) has a first sub-cavity (231), and the second inner liner (24) has a second sub-cavity (241). The first sub-cavity (231) and the second sub-cavity (241) communicate with each other and together define the water storage cavity (21). The heat exchanger (10) is sandwiched between the first inner liner (23) and the second inner liner (24). The first inner liner (23) has a first wall (232), and the second inner liner (24) has a second wall (242). The first wall (232) and the second wall (242) are respectively constructed as the outer cavity walls of the first sub-cavity (231) and the second sub-cavity (241), and both are in contact with the heat exchanger (10).

2. The water tank of the water heater according to claim 1, characterized in that, The heat exchanger (10) is constructed as a plate structure, and the two opposing surfaces of the heat exchanger (10) along its own thickness direction are respectively attached to the first wall (232) and the second wall (242).

3. The water tank of the water heater according to claim 1 or 2, characterized in that, The first wall (232) is constructed as a plane, and / or the second wall (242) is constructed as a plane.

4. The water tank of the water heater according to claim 1, characterized in that, The first inner liner (23) has an inlet (233) communicating with the first sub-cavity (231), and the second inner liner (24) has an outlet (243) communicating with the second sub-cavity (241), and the inlet (233) is located below the outlet (243) along the direction of gravity (a).

5. The water tank of the water heater according to claim 4, characterized in that, The first inner tank (23) has a first opening (234) communicating with the first sub-cavity (231), and the second inner tank (24) has a second opening (244) communicating with the second sub-cavity (241). The water heater tank (100) also includes a connecting pipe (30), one end of which is connected to the first opening (234), and the other end extends through the second opening (244) to the bottom of the second sub-cavity (241).

6. The water tank of the water heater according to claim 5, characterized in that, The water tank (100) of the water heater also includes a sealing element (40), which is sealed between the inner wall of the connecting pipe (30) and the first opening (234), and / or between the inner wall of the connecting pipe (30) and the second opening (244).

7. The water tank of the water heater according to claim 6, characterized in that, The first opening (234) is formed on the first wall (232), the second opening (244) is formed on the second wall (242), and the sealing element (40) is interference-fitted between the first wall (232) and the second wall (242).

8. The water tank of the water heater according to claim 1, characterized in that, The water tank (100) of the water heater also includes a housing (50) having an inner cavity for accommodating the heat exchanger (10) and the water storage assembly (20).

9. The water tank of the water heater according to claim 8, characterized in that, The water tank (100) of the water heater also includes a heat insulation layer (60), which is filled between the shell (50) and the water storage component (20).

10. The water tank of the water heater according to claim 8, characterized in that, The shell (50) is constructed in the shape of a cuboid.

11. A water heater, characterized in that, Includes the water tank (100) of a water heater as described in any one of claims 1-10.

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