Phase change water heater

Abstract

The embodiment of the utility model provides a phase-change water heater. The phase-change water heater comprises a phase-change inner container, a water inlet pipe and a water outlet pipe, the heating assembly comprises a first cast aluminum heater, a second cast aluminum heater and a water pump, the first cast aluminum heater is communicated with the water inlet of the phase change inner container, the second cast aluminum heater is communicated with the water outlet of the phase change inner container, and the water pump is communicated with the first cast aluminum heater; the water receiving pipe is communicated with the water pump and used for being communicated with an external water source; the thermostatic valve is provided with a first water inlet valve port, a second water inlet valve port and a water outlet valve port, the first water inlet valve port is communicated with the water receiving pipe, and the second water inlet valve port is communicated with the water outlet of the second cast aluminum heater; the blow-off pipe is communicated with the water outlet valve port; one side of the support is provided with the phase change inner container, and the other side of the support is provided with the heating assembly and the thermostatic valve. According to the arrangement, the length of the pipeline between the devices is shortened, so that the water resistance of the pipeline is effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of water heaters, in particular to a phase change water heater. Background Art

[0002] A water heater is a device that uses various physical principles to heat cold water to hot water over a certain period of time. Phase change water heaters are a recently emerging type of water heater. They use a phase change material in an inner tank to store heat. In water-using mode, the tank exchanges heat with cold water to produce hot water. In heat circulation mode, the tank exchanges heat with hot water to store heat in the inner tank's phase change material, allowing it to heat cold water in water-using mode.

[0003] In the related art, the phase change water heater has numerous components and complicated pipelines, which results in excessively high water resistance in the pipelines of the phase change water heater. Utility Model Content

[0004] The present invention aims to solve at least one of the technical problems in the prior art. To this end, the present invention provides a phase change water heater that can effectively reduce the water resistance of the pipeline.

[0005] An embodiment of the present utility model provides a phase change water heater, comprising: a phase change inner tank; a heating assembly, comprising a first cast aluminum heater, a second cast aluminum heater and a water pump, wherein the first cast aluminum heater is connected to the water inlet of the phase change inner tank, the second cast aluminum heater is connected to the water outlet of the phase change inner tank, and the water pump is connected to the first cast aluminum heater; a water connecting pipe, connected to the water pump and used to connect to an external water source; a thermostatic valve, provided with a first water inlet valve port, a second water inlet valve port and a water outlet valve port, the first water inlet valve port is connected to the water connecting pipe, and the second water inlet valve port is connected to the water outlet of the second cast aluminum heater; a drain pipe, connected to the water outlet valve port; a bracket, wherein the phase change inner tank is mounted on one side of the bracket, and the heating assembly and the thermostatic valve are mounted on the other side of the bracket.

[0006] The phase change water heater provided by the embodiment of the present utility model has at least the following beneficial effects:

[0007] By installing the heating assembly and the thermostatic valve on the same side of the bracket, that is, the first cast aluminum heater, the second cast aluminum heater, the water pump and the thermostatic valve are located on the same side of the bracket, the distance between the first cast aluminum heater, the second cast aluminum heater, the water pump and the thermostatic valve is shorter, so that the length of the pipeline between each component is shortened, thereby effectively reducing the water resistance of the pipeline.

[0008] In one example of this embodiment, the first cast aluminum heater and the second cast aluminum heater are arranged side by side.

[0009] In one embodiment of this embodiment, the thermostatic valve and the water pump are arranged on the same side of the first cast aluminum heater and the second cast aluminum heater, and the thermostatic valve is opposite to the second cast aluminum heater, and the water pump is opposite to the first cast aluminum heater.

[0010] In one embodiment of this implementation, the phase change water heater includes a base and a shock-absorbing pad, the base is arranged on the bracket, the shock-absorbing pad is installed on the base, the water pump is clamped on the shock-absorbing pad, and the axial direction of the output shaft of the water pump is parallel to the installation direction of the shock-absorbing pad and the base.

[0011] In one embodiment of this implementation, the phase change water heater includes a connecting piece, the shock-absorbing pad is provided with a connecting hole, the connecting piece is passed through the connecting hole and connected to the machine base, and the axial direction of the connecting hole is parallel to the installation direction of the shock-absorbing pad and the machine base.

[0012] In one embodiment of this embodiment, the water inlet of the first cast aluminum heater is close to the bracket relative to the water outlet, and is connected to the water pump through a first bellows; and / or, the water outlet of the second cast aluminum heater is close to the bracket relative to the water inlet, and is connected to the thermostatic valve through a second bellows.

[0013] In an example of this embodiment, the water receiving pipe and the water discharge pipe are installed on the bracket and extend in the same direction.

[0014] In one embodiment of this embodiment, the phase change liner includes a box body, a heat exchanger and a pipeline structure, the box body has a cavity, the cavity is filled with phase change material, the heat exchanger is arranged in the cavity and is in heat transfer contact with the phase change material, the pipeline structure is passed through the heat exchanger and connects the first cast aluminum heater and the second cast aluminum heater.

[0015] In an example of this embodiment, the heat exchanger includes a heat conducting plate group, the distance between two adjacent heat conducting plates in the heat conducting plate group ranges from 1 mm to 5 mm, and the viscosity of the phase change material in a liquid state ranges from 1000 Pa·s to 5000 Pa·s.

[0016] In an example of this implementation manner, when the phase change material is in a solid state, there is a gap between the phase change material and the top wall of the cavity, and the ratio of the gap to the volume of the cavity is in a range of 5%-20%.

[0017] In one embodiment of this embodiment, the pipeline structure includes a water inlet pipe, a water outlet pipe and multiple heat conduction pipes, the multiple heat conduction pipes are arranged in the heat exchanger, the heat exchanger has a middle area and an edge area surrounding the middle area, the heat conduction pipes extend from the middle area to the edge area, and the multiple heat conduction pipes are all connected to the water inlet pipe and the water outlet pipe to form multiple water channels flowing into the middle area and flowing out of the edge area.

[0018] In one embodiment of this implementation manner, a plurality of the heat conduction pipes are connected in parallel.

[0019] In an example of this embodiment, the heat exchanger includes a plurality of heat conducting plates, and the heat conducting pipe is arranged to extend in a circuitous manner along the arrangement direction of the plurality of heat conducting plates to extend from the middle area to the edge area.

[0020] In one embodiment of this embodiment, in a plane perpendicular to the arrangement direction of the multiple heat-conducting plates, the heat-conducting pipe first extends along the length direction of the heat-conducting plate, then extends along the width direction of the heat-conducting plate, and then extends along the length direction of the heat-conducting plate to the middle of the heat-conducting plate in the length direction.

[0021] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0023] Figure 1 This is a schematic diagram of the three-dimensional structure of a phase change water heater provided by an embodiment of the present utility model;

[0024] Figure 2 yes Figure 1 A schematic diagram of the three-dimensional structure of the phase change water heater from another perspective;

[0025] Figure 3 yes Figure 1 A schematic diagram of the structure of a phase change water heater in a decomposed state;

[0026] Figure 4 yes Figure 1 Schematic diagram of the three-dimensional structure of the phase change water heater bracket, heating component, thermostatic valve, water pipe and drain pipe;

[0027] Figure 5 yes Figure 4 A schematic diagram of the three-dimensional structure of the bracket, heating component, thermostatic valve, water connection pipe and water discharge pipe from another perspective;

[0028] Figure 6 yes Figure 4 A schematic diagram of the three-dimensional structure of the first cast aluminum heater and the second cast aluminum heater;

[0029] Figure 7 yes Figure 4 A schematic diagram of a partial structure of a first cast aluminum heater;

[0030] Figure 8 yes Figure 4 Schematic diagram of the three-dimensional structure of the water pump and bracket installation;

[0031] Figure 9 yes Figure 1 Schematic diagram of the three-dimensional structure of the phase change liner in the decomposed state;

[0032] Figure 10 yes Figure 9 Structural diagram of the heat exchanger and piping structure;

[0033] Figure 11 yes Figure 10 Schematic diagram of the enlarged structure of region I;

[0034] Figure 12 yes Figure 9 Schematic diagram of the structure of the heat exchanger and part of the box;

[0035] Figure 13 yes Figure 9 Schematic diagram of the heat exchanger and piping structure observed from the cover side;

[0036] Figure 14 yes Figure 9 Schematic diagram of the water path with the heat exchanger and piping structure viewed from the side facing away from the tank cover.

[0037] Reference numerals:

[0038] Phase change water heater 100; phase change liner 10; housing 11; main housing 111; housing cover 112; chamber 101; top wall 1011; gap 90; mounting lug 15; heat exchanger 12; heat conducting plate assembly 120; heat conducting plate 121; middle region 1201; edge region 1202; piping structure 13; water inlet pipe 131; water outlet pipe 132; first heat conducting pipe 133; second heat conducting pipe 134; first water distribution pipe 136; second water distribution pipe 137; heating assembly 20; first cast aluminum heater 21; main body 211; spiral water pipe 212; electric heating core 213; second cast aluminum heater 22; water pump 23; base 231; boss 2311; shock-absorbing pad 232; connecting hole 2321; annular groove 2322; first bellows 24; second bellows 25; water connecting pipe 30; first water inlet valve port 301; second water inlet valve port 302; water outlet valve port 303; thermostatic valve 40; drain pipe 50; bracket 60; pressure plate 70. DETAILED DESCRIPTION

[0039] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0040] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0041] In the description of this utility model, "several" means more than one, "plurality" means more than two, "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. The use of the terms "first" and "second" is solely for the purpose of distinguishing technical features and is not to be construed as indicating or implying relative importance, implicitly specifying the number of the indicated technical features, or implicitly specifying the order of the indicated technical features.

[0042] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0043] In the description of the present invention, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" 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 present invention. In this specification, the exemplary expressions 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 suitable manner in any one or more embodiments or examples.

[0044] See also Figures 1 to 3 , Figure 1 This is a schematic diagram of the three-dimensional structure of a phase change water heater 100 provided in one embodiment of the present utility model; Figure 2 yes Figure 1 A schematic diagram of the three-dimensional structure of the phase change water heater 100 from another perspective; Figure 3 yes Figure 1Schematic diagram of the structure of the phase change water heater 100 in a disassembled state. The embodiment of the present utility model provides a phase change water heater 100, which includes a phase change inner tank 10, a heating component 20, a water connection pipe 30, a thermostatic valve 40 and a drain pipe 50. Among them, the heating component 20 includes a first cast aluminum heater 21, a second cast aluminum heater 22 and a water pump 23. The first cast aluminum heater 21 is connected to the water inlet of the phase change inner tank 10, the second cast aluminum heater 22 is connected to the water outlet of the phase change inner tank 10, and the water pump 23 is connected to the first cast aluminum heater 21. The water connection pipe 30 is connected to the water pump 23 and is used to connect to an external water source. The thermostatic valve 40 defines a first water inlet valve port 301, a second water inlet valve port 302, and a water outlet valve port 303. The first water inlet valve port 301 communicates with the water connection pipe 30, the second water inlet valve port 302 communicates with the water outlet of the second cast aluminum heater 22, and the drain pipe 50 communicates with the water outlet valve port 303. The phase change liner 10 is mounted on one side of the bracket 60, while the heating assembly 20 and the thermostatic valve 40 are mounted on the other side of the bracket 60.

[0045] Specifically, the water receiving pipe 30 can be connected to a water supply device such as a faucet to allow tap water to enter the water path of the phase change water heater 100. The water discharge pipe 50 can be connected to a water-using device such as a shower.

[0046] The first cast aluminum heater 21 is used to heat the water flow upstream of the phase change inner tank 10, and the second cast aluminum heater 22 is used to heat the water flow downstream of the phase change inner tank 10, so as to store heat in the phase change material of the phase change inner tank 10 in the internal circulation mode, and provide hot water of a sufficiently high temperature in the water discharge mode. The hot water can be mixed with cold water in the thermostatic valve 40 to obtain mixed water of suitable temperature.

[0047] The water pump 23 is connected to the water inlet of the first cast aluminum heater 21 , and the water pump 23 can provide power in the internal circulation mode so that the water flow can circulate along the first cast aluminum heater 21 , the phase change liner 10 and the second cast aluminum heater 22 .

[0048] The first water inlet valve port 301 of the thermostatic valve 40 is connected to the water receiving pipe 30 to allow cold water to enter the thermostatic valve 40. The second water inlet valve port 302 of the thermostatic valve 40 is connected to the water outlet of the second cast aluminum heater 22 to allow hot water to enter the thermostatic valve 40. A mixing chamber is provided within the thermostatic valve 40. The first water inlet valve port 301, the second water inlet valve port 302, and the water outlet valve port 303 are all connected to the mixing chamber. Cold water can enter the mixing chamber through the first water inlet valve port 301, and hot water can enter the mixing chamber through the second water inlet valve port 302. The mixed water obtained by mixing the cold and hot water can flow out of the water outlet valve port 303 and pass through the drain pipe 50 for user use. The thermostatic valve 40 is provided with a valve core and a driving member. The valve core is arranged in the mixing chamber. The driving member is connected to the valve core. The driving member is used to drive the valve core to move in the mixing chamber to adjust the amount of cold water entering the first water inlet valve port 301 and the amount of hot water entering the second water inlet valve port 302, thereby adjusting the temperature of the mixed water.

[0049] The outer side of the phase change liner 10 is provided with mounting lugs 15, which are used to connect and fix to a wall or other structure to complete the installation of the phase change water heater 100. In this embodiment, the phase change water heater 100 is installed horizontally, that is, the phase change liner 10 is installed on one side of the bracket 60 in the horizontal direction, and the thermostatic valve 40 and heating assembly 20 are installed on the other side of the bracket 60 in the horizontal direction. In other embodiments, the phase change water heater 100 can also be installed vertically, that is, the phase change liner 10 is installed on one side of the bracket 60 in the vertical direction, and the thermostatic valve 40 and heating assembly 20 are installed on the other side of the bracket 60 in the vertical direction. In this embodiment, the phase change liner 10, thermostatic valve 40, and heating assembly 20 are all mounted to the bracket 60 by screws. In other embodiments, the phase change liner 10, thermostatic valve 40, and heating assembly 20 can also be mounted to the bracket 60 by other means such as snaps.

[0050] By mounting the heating assembly 20 and thermostatic valve 40 on the same side of the bracket 60, that is, the first cast aluminum heater 21, the second cast aluminum heater 22, the water pump 23, and the thermostatic valve 40 are all located on the same side of the bracket 60, the distance between the first cast aluminum heater 21, the second cast aluminum heater 22, the water pump 23, and the thermostatic valve 40 is shortened, thereby shortening the length of the pipelines between the various components, thereby effectively reducing the water resistance of the pipelines. Furthermore, mounting the phase change liner 10 on the side of the bracket 60 facing away from the heating assembly 20 and the thermostatic valve 40 can reduce the difficulty of assembly.

[0051] In one embodiment of this embodiment, please refer to Figure 3 The phase change water heater 100 includes a pressing plate 70 mounted on a bracket 60. The first cast aluminum heater 21 and the second cast aluminum heater 22 abut against the pressing plate 70 on a side facing away from the bracket 60.

[0052] Specifically, after the first cast aluminum heater 21 and the second cast aluminum heater 22 are mounted on the bracket 60, the pressing plate 70 is placed against the side of the first cast aluminum heater 21 and the second cast aluminum heater 22 facing away from the bracket 60, and the pressing plate 70 is fixed to the bracket 60 with screws. This arrangement ensures that the first cast aluminum heater 21 and the second cast aluminum heater 22 are mounted more securely, reducing the risk of them falling.

[0053] In one embodiment of this embodiment, please refer to Figures 3 to 5 , Figure 4 yes Figure 1 A schematic diagram of the three-dimensional structure of the phase change water heater 100, including the bracket 60, the heating assembly 20, the thermostatic valve 40, the water receiving pipe 30 and the water discharge pipe 50; Figure 5 yes Figure 4 Schematic diagram of the three-dimensional structure of the bracket 60, heating assembly 20, thermostatic valve 40, water receiving pipe 30 and water discharge pipe 50 from another perspective. The first cast aluminum heater 21 and the second cast aluminum heater 22 are arranged side by side.

[0054] Specifically, in this embodiment, the side surface of the first cast aluminum heater 21 is in contact with the side surface of the second cast aluminum heater 22. In other embodiments, the side surface of the first cast aluminum heater 21 may also be spaced apart from the side surface of the second cast aluminum heater 22.

[0055] By arranging the first cast aluminum heater 21 side by side with the second cast aluminum heater 22, the heat generated by the first cast aluminum heater 21 and the second cast aluminum heater 22 can be reduced from being dissipated into the air, which is beneficial to improving energy utilization.

[0056] In one embodiment of this embodiment, please refer to Figures 3 to 5 The thermostatic valve 40 and the water pump 23 are arranged on the same side of the first cast aluminum heater 21 and the second cast aluminum heater 22, and the thermostatic valve 40 is opposite to the second cast aluminum heater 22, and the water pump 23 is opposite to the first cast aluminum heater 21.

[0057] It will be appreciated that the thermostatic valve 40 and the water pump 23 are located on the same side of the first cast aluminum heater 21 and the second cast aluminum heater 22 to reduce the space occupied by the heating assembly 20 and the thermostatic valve 40. Furthermore, the thermostatic valve 40 faces the second cast aluminum heater 22, which reduces the length of the pipeline between the thermostatic valve 40 and the second cast aluminum heater 22. The water pump 23 faces the first cast aluminum heater 21, which reduces the length of the pipeline between the water pump 23 and the first cast aluminum heater 21. This effectively reduces the water resistance in the pipeline between the thermostatic valve 40 and the second cast aluminum heater 22, as well as the water resistance in the pipeline between the water pump 23 and the first cast aluminum heater 21.

[0058] In this embodiment, the thermostatic valve 40 is provided with a bypass water pipe, which is connected to the water pump 23 through a pipeline so that water can also flow through the bypass water pipe in the internal circulation mode, so as to improve the flow efficiency of the internal circulation water flow. The thermostatic valve 40 and the water pump 23 are arranged on the same side of the first cast aluminum heater 21 and the second cast aluminum heater 22, which facilitates the connection between the water pump 23 and the bypass water pipe.

[0059] In one embodiment of this embodiment, please refer to Figures 4 to 6 , Figure 6 yes Figure 4 Schematic diagram of the three-dimensional structure of the first cast aluminum heater 21 and the second cast aluminum heater 22. The water inlet of the first cast aluminum heater 21 is closer to the bracket 60 relative to the water outlet, and is connected to the water pump 23 through the first bellows 24.

[0060] Specifically, a water inlet and a water outlet are provided on the side of the first cast aluminum heater 21 facing away from the second cast aluminum heater 22. This arrangement allows the water inlet of the first cast aluminum heater 21 and the water outlet of the water pump 23 to have a relatively small height difference relative to the bracket 60. Furthermore, the first bellows 24 can deform to a certain extent, thereby ensuring a coaxial connection between the first bellows 24 and the water pump 23. Furthermore, the gasket between the first bellows 24 and the water pump 23 is extruded relatively evenly, resulting in a longer service life for the gasket. Furthermore, water leakage between the first bellows 24 and the water pump 23 is less likely to occur.

[0061] In this embodiment, the water inlet of the first cast aluminum heater 21 and the water outlet of the water pump 23 have the same height relative to the bracket 60, that is, the height difference between the water inlet of the first cast aluminum heater 21 and the water outlet of the water pump 23 relative to the bracket 60 is zero, which is beneficial to extend the life of the gasket and further reduce the risk of water leakage.

[0062] In one embodiment of this embodiment, please refer to Figures 4 to 6 The water outlet of the second cast aluminum heater 22 is closer to the bracket 60 relative to the water inlet, and is connected to the thermostatic valve 40 through the second bellows 25.

[0063] Specifically, a water inlet and outlet are formed on the side of the second cast aluminum heater 22 facing away from the first cast aluminum heater 21. This arrangement minimizes the height difference between the water outlet of the second cast aluminum heater 22 and the second water inlet port 302 of the thermostatic valve 40 relative to the bracket 60. Furthermore, the deformable nature of the second bellows 25 ensures a coaxial connection between the second bellows 25 and the thermostatic valve 40. This ensures that the gasket between the second bellows 25 and the thermostatic valve 40 is evenly squeezed, resulting in a longer service life for the gasket. Furthermore, water leakage between the second bellows 25 and the thermostatic valve 40 is less likely to occur.

[0064] In one embodiment of this embodiment, please refer to Figure 6 and Figure 7 , Figure 7 yes Figure 4 Schematic diagram of part of the structure of the first cast aluminum heater 21. The first cast aluminum heater 21 includes a main body 211, a spiral water pipe 212, and an electric heating core 213. The main body 211 is constructed of aluminum and covers the spiral water pipe 212 and the electric heating core 213. The electric heating core 213 is used to pass electricity and generate heat, which can be transferred to the spiral water pipe 212 through the main body 211. The two ends of the spiral water pipe 212 serve as the water inlet and outlet of the first cast aluminum heater 21. The spiral water pipe 212 extends in a spiral to increase the contact area with the main body 211 and improve heating efficiency.

[0065] It is understood that during the heat transfer process, the electric heating core 213 is isolated from the water by the main body 211, reducing the risk of electrical leakage and eliminating the need for an additional anti-electrical barrier. In addition, the first cast aluminum heater 21 has a smaller volume than conventional heating structures, which helps to achieve a miniaturized design of the phase change water heater 100.

[0066] In this embodiment, the second cast aluminum heater 22 and the first cast aluminum heater 21 have the same structure, which will not be described again here.

[0067] In one embodiment of this embodiment, please refer to Figure 5 and Figure 8 , Figure 8 yes Figure 4 Schematic diagram of the three-dimensional structure of the water pump 23 installed on the bracket 60. The phase change water heater 100 includes a base 231 and a shock-absorbing pad 232. The base 231 is provided on the bracket 60, the shock-absorbing pad 232 is installed on the base 231, and the water pump 23 is clamped to the shock-absorbing pad 232. The axial direction of the output shaft of the water pump 23 is parallel to the installation direction of the shock-absorbing pad 232 and the base 231. Specifically, the shock-absorbing pad 232 is provided with an annular groove 2322, and the water pump 23 is clamped to the annular groove 2322. It is understandable that the water pump 23 will generate mechanical vibration during operation, thereby emitting noise. By setting the axial direction of the output shaft of the water pump 23 to be parallel to the installation direction of the shock-absorbing pad 232 and the base 231, the radial vibration of the water pump 23 can be well absorbed by the shock-absorbing pad 232, thereby effectively reducing the noise.

[0068] In this embodiment, the base 231 is provided with a boss 2311, which is fixed to the side of the bracket 60 facing away from the phase change liner 10 by screws, thereby completing the installation of the base 231 on the bracket 60. In other embodiments, the base 231 and the bracket 60 can be an integrated structure.

[0069] In one embodiment of this embodiment, please refer to Figure 5 and Figure 8The phase change water heater 100 includes a connecting member. The shock-absorbing pad 232 has a connecting hole 2321. The connecting member is inserted into the connecting hole 2321 and connected to the base 231. The axial direction of the connecting hole 2321 is parallel to the installation direction of the shock-absorbing pad 232 and the base 231. Specifically, the connecting member can be a screw. The screw passes through the connecting hole 2321 and is threadedly connected to the base 231 to secure the shock-absorbing pad 232 to the base 231. By setting the axial direction of the connecting hole 2321 to be parallel to the installation direction of the base 231, the axial direction of the output shaft of the water pump 23 is parallel to the installation direction of the shock-absorbing pad 232 and the base 231, which helps reduce noise.

[0070] In this embodiment, there are two shock-absorbing pads 232, which are installed on the base at intervals. The water pump 23 is located between the two shock-absorbing pads 232 and is respectively engaged with the two shock-absorbing pads 232 to achieve the installation of the water pump 23 on the machine base 231.

[0071] The water pump 23 is mounted on the bracket 60 via a base 231. Specifically, the base 231 is provided with a boss 2311, which is screwed to the bracket 60. The water pump 23 is then snapped onto the base 231, completing the installation of the water pump 23 on the bracket 60. Providing the base 231 between the water pump 23 and the bracket 60 effectively reduces noise generated by the water pump 23 during operation.

[0072] In one embodiment of this embodiment, please refer to Figure 3 and Figure 4 The water inlet pipe 30 and the water discharge pipe 50 are mounted on the bracket 60 and extend in the same direction. Specifically, the water inlet pipe 30 and the water discharge pipe 50 are both mounted on the thermostatic valve 40 and extend toward the thermostatic valve 40 and away from the water pump 23. By arranging the water inlet pipe 30 and the water discharge pipe 50 to extend in the same direction, the water inlet pipe 30 can be connected to an external water source, and the water discharge pipe 50 can be connected to external water-using equipment.

[0073] In one embodiment of this embodiment, please refer to Figure 3 and Figure 9 , Figure 9 yes Figure 1Schematic diagram of the three-dimensional structure of the phase change liner 10 in a decomposed state. The phase change liner 10 includes a box body 11, a heat exchanger 12 and a piping structure 13. The box body 11 has a cavity 101, the cavity 101 is filled with a phase change material, the heat exchanger 12 is arranged in the cavity 101 and is in heat transfer contact with the phase change material, and the piping structure 13 is passed through the heat exchanger 12 and is connected to the first cast aluminum heater 21 and the second cast aluminum heater 22. Specifically, the box body 11 includes a main box 111 and a box cover 112. The main box 111 is provided with a cavity 101, and the box cover 112 is provided on the opening of the main box 111 to close the cavity 101. The box cover 112 and the main box 111 can be fixedly connected by welding or the like. The water inlet and outlet ends of the piping structure 13 both pass through the box cover 112 and are respectively connected to the first cast aluminum heater 21 and the second cast aluminum heater 22. With this arrangement, in heat circulation mode, hot water can flow along the pipe structure 13 and store heat in the phase change material through the heat exchanger 12. In water use mode, the phase change material can transfer heat to the water flow in the pipe structure 13 through the heat exchanger 12.

[0074] In one embodiment of this embodiment, please refer to Figures 9 to 11 , Figure 10 yes Figure 9 A schematic structural diagram of a heat exchanger 12 and a piping structure 13; Figure 11 yes Figure 10 The heat exchanger 12 includes a heat conducting plate group 120. The distance D between two adjacent heat conducting plates 121 in the heat conducting plate group 120 ranges from 1 mm to 5 mm. The viscosity of the phase change material in the liquid state ranges from 1000 Pa·s to 5000 Pa·s.

[0075] Specifically, the thermal conductive sheet assembly 120 includes a plurality of thermal conductive sheets 121 stacked in a sequentially spaced relationship, and the pipeline structure 13 is disposed through the plurality of thermal conductive sheets 121. The distance D between two adjacent thermal conductive sheets 121 can be selected to be 1.0 mm, 1.3 mm, 1.7 mm, 2.1 mm, 2.4 mm, 2.7 mm, 3 mm, 4 mm, 5 mm, etc. The viscosity range of the phase change material in the liquid state can be selected to be 1000 Pa·s, 1290 Pa·s, 1950 Pa·s, 2000 Pa·s, 2750 Pa·s, 3100 Pa·s, 4170 Pa·s, 4670 Pa·s, 5000 Pa·s, etc.

[0076] It can be understood that, when the volume of the cavity 101 is constant, when the distance D between two adjacent thermal conductive plates 121 is greater than 5 mm, the number of thermal conductive plates 121 in the thermal conductive plate group 120 will be too small, the contact area between the thermal conductive plate group 120 and the phase change material will be too small, and the heat exchange efficiency will be too low; when the distance D between two adjacent thermal conductive plates 121 is less than 1 mm, the liquid phase change material will have difficulty flowing in the thermal conductive plate group 120, the phase change material will have difficulty in fully contacting the thermal conductive plate group 120, and it will not be conducive to the exothermic solidification of the phase change material.

[0077] Furthermore, when the viscosity of the phase change material in its liquid state exceeds 5000 Pa·s, the phase change material has poor fluidity in its liquid state, making it difficult to fully contact the thermal conductive plate assembly 120 and completing the filling of the phase change material. When the viscosity of the phase change material in its liquid state is less than 1000 Pa·s, the phase change material is not sufficiently viscous and is prone to stratification after multiple solid-liquid conversions, resulting in reduced energy storage efficiency. Furthermore, the convective heat transfer coefficient between the phase change material and the multiple thermal conductive plates 121 is also unsatisfactory, resulting in low heat exchange efficiency between the phase change material and the heat exchanger 12.

[0078] It should be noted that if the heat transfer coefficient of the phase change material is too low, the heat released by the phase change material will not be transferred to the water through the heat exchanger in time. Therefore, it is necessary to increase the heat transfer coefficient between the phase change material and the heat exchanger, thereby improving the heat exchange efficiency of the two, so that the phase change material can quickly transfer energy to the water in the water use mode, and the heat in the water can be quickly transferred to the phase change material in the internal circulation mode.

[0079] By setting the distance D between two adjacent heat conducting plates 121 to a range of 1mm-5mm, and setting the viscosity range of the phase change material in the liquid state to 1000Pa·s-5000Pa·s, there is a suitable gap between the heat conducting plates 121, thereby ensuring the number of heat conducting plates 121, and the contact area between the phase change material and the heat conducting plate group 120 is large. The heat exchanger 12 has a high heat exchange efficiency. At the same time, the phase change material has a suitable viscosity, and the phase change material and the heat exchanger 12 have a high convective heat transfer coefficient, which further improves the heat exchange efficiency between the phase change material and the heat exchanger 12. The phase change material can flow in the gap between the heat conducting plates 121 to complete the filling, and reduces the risk of energy storage attenuation of the phase change material after multiple solid-liquid conversions, thereby ensuring the energy storage efficiency of the phase change material.

[0080] The phase change water heater 100 provided in the embodiment of the present invention has a higher heat transfer coefficient between the phase change material and the heat exchanger 12 by reasonably designing the gap between the heat conducting plates 121 and the viscosity of the phase change material when in liquid state, thereby improving the heat exchange efficiency. As a result, the phase change material can quickly transfer energy to water in the water use mode, and the heat in the water can be quickly transferred to the phase change material in the internal circulation mode, thereby improving the user experience.

[0081] In one embodiment of this embodiment, please refer to Figure 9 and Figure 12 , Figure 12 yes Figure 9 Schematic diagram of the structure of the heat exchanger 12 and part of the housing 11. When the phase change material is in a solid state, a gap 90 exists between the phase change material and the top wall 1011 of the cavity 101. The ratio of the gap 90 to the volume of the cavity 101 ranges from 5% to 20%. It is understood that after the solid phase change material absorbs sufficient heat from the water flow in the pipeline structure 13 through the heat conducting plate assembly 120, it will melt into a liquid state, during which the volume of the phase change material increases. After the liquefied phase change material conducts sufficient heat to the water flow in the pipeline structure 13 through the heat conducting plate assembly 120, it will solidify into a solid state, during which the volume of the phase change material decreases. When the ratio of the gap 90 to the volume of the cavity 101 is less than 5%, the phase change material does not have enough space to fully liquefy. When the ratio of the gap 90 to the volume of the cavity 101 is greater than 20%, there is too little phase change material in the cavity 101, making it difficult to store a large amount of heat. Therefore, when the phase change material is in solid state, the ratio of the gap 90 between the top wall 1011 of the cavity 101 and the volume of the cavity 101 is set to 5%-20%, so that there is enough phase change material in the cavity 101 and the phase change material has enough space to completely liquefy, so as to fully store heat.

[0082] Specifically, the ratio of the volume of the gap 90 to the volume of the cavity 101 can be selected as 5%, 6%, 7%, 8.5%, 9.5%, 10%, 15%, 20%, etc. In this embodiment, when the phase change material is in a liquid state, the phase change material fills the gap 90 to obtain a higher heat storage capacity while the phase change material can be completely liquefied. In this embodiment, when the phase change material is in a solid state, the phase change material can cover the heat exchanger 12 to fully contact the heat exchanger 12. In this embodiment, the cavity 101 of the housing 11 is constructed as a rectangular cavity, and the ratio of the distance between the phase change material and the top wall 1011 of the cavity 101 when the phase change material is in a solid state to the height of the cavity 101 is also in the range of 5%-20%, so as to achieve a ratio of the volume of the gap 90 to the volume of the cavity 101 of 5%-20%.

[0083] In one embodiment of this embodiment, please refer to Figure 3 、 Figure 13 and Figure 14 , Figure 13 yes Figure 9 Schematic diagram of the waterway of the heat exchanger 12 and the piping structure 13 observed from one side of the tank cover 112; Figure 14 yes Figure 9Schematic diagram of the water path of the heat exchanger 12 and the piping structure 13 as viewed from the side facing away from the box cover 112. The piping structure 13 includes an inlet pipe 131, an outlet pipe 132 and a plurality of heat-conducting pipes, and the plurality of heat-conducting pipes are arranged through the heat exchanger 12. The heat exchanger 12 has a middle area 1201 and an edge area 1202 surrounding the middle area 1201. The heat-conducting pipes extend from the middle area 1201 to the edge area 1202. The plurality of heat-conducting pipes are all connected to the inlet pipe 131 and the outlet pipe 132 to form a plurality of water paths flowing into the middle area 1201 and flowing out of the edge area 1202. Specifically, the inlet pipe 131 and the outlet pipe 132 are both arranged on the same side of the heat-conducting plate group 120, so that the inlet pipe 131 and the outlet pipe 132 are respectively connected to the first cast aluminum heater 21 and the second cast aluminum heater 22, which is conducive to shortening the pipe length and reducing the water resistance of the phase change liner 10.

[0084] Specifically, the heat transfer pipe includes a first heat transfer pipe 133 and a second heat transfer pipe 134. The first heat transfer pipe 133 is disposed in the middle region 1201, and the second heat transfer pipe 134 is disposed in the edge region 1202. It is understood that when the water flows through the first heat transfer pipe 133, it exchanges heat with the middle region 1201 of the heat transfer plate assembly 120. Then, when it flows through the second heat transfer pipe 134, it exchanges heat with the edge region 1202 of the heat transfer plate assembly 120. In this way, the water can fully exchange heat with the heat transfer plate assembly 120 through the pipe structure 13, which is conducive to improving heat exchange efficiency.

[0085] By setting up multiple heat-conducting pipes, the multiple heat-conducting pipes all extend from the middle area 1201 to the edge area 1202, forming multiple water channels flowing into the middle area 1201 and flowing out of the edge area 1202. The multiple water flows and the middle area 1201 and the edge area 1202 of the heat-conducting plate group 120 exchange heat in turn. The contact area between the heat-conducting plate group 120 and the multiple heat-conducting pipes is large, the utilization rate of the heat-conducting plate group 120 is high, the heat exchange efficiency is improved, and the size requirement of the heat-conducting plate group 120 is reduced, which is conducive to the miniaturization design of the phase change water heater 100.

[0086] In one embodiment of this embodiment, please refer to Figure 8 、 Figure 10 、 Figure 13 and Figure 14The heat transfer pipe extends in a circuitous manner along the arrangement direction of the thermal conductive plate assembly 120, extending from the middle region 1201 to the edge region 1202. Specifically, the heat transfer pipe enters the thermal conductive plate assembly 120 from one side of the case cover 112, exits from the side of the thermal conductive plate assembly 120 facing away from the case cover 112, then enters the thermal conductive plate assembly 120 again, and exits from the side of the thermal conductive plate assembly 120 facing the case cover 112. This process repeats through the thermal conductive plate assembly 120, forming a circuitous and winding structure. Simultaneously, while winding, the heat transfer pipe extends from the middle region 1201 to the edge region 1202 in the same plane perpendicular to the arrangement direction of the thermal conductive plate assembly 120 (the arrangement direction of the multiple thermal conductive plates 121). With this arrangement, the heat conducting pipe and the heat conducting plate group 120 have a larger contact area, and the utilization rate of the heat conducting plate group 120 is improved, which is beneficial to further improve the heat exchange efficiency of the heat conducting plate group 120 and the heat conducting pipe.

[0087] In one embodiment of this embodiment, please refer to Figure 8 、 Figure 11 、 Figure 13 and Figure 14 , multiple heat conducting pipes are connected in parallel. Specifically, the multiple heat conducting pipes have the same length. This arrangement allows water to flow in and out of the multiple water channels formed by the multiple heat conducting pipes simultaneously, ensuring uniform heat exchange across all areas of the heat conducting plate assembly 120 and fully utilizing the heat conducting plate assembly 120.

[0088] It should be noted that in this embodiment, the thermally conductive sheets in the thermally conductive sheet assembly 120 are rectangular sheets having a length direction and a width direction. The length direction is vertical, and the width direction is horizontal. In other embodiments, the length direction of the thermally conductive sheet assembly 120 may also be horizontal, and the width direction of the thermally conductive sheet assembly 120 may also be vertical.

[0089] In one embodiment of this embodiment, the heat conducting fin assembly 120 includes a plurality of heat conducting fins 121. In a plane perpendicular to the arrangement of the plurality of heat conducting fins 121, the heat conducting pipe first extends along the length of the heat conducting fins 121, then along the width of the heat conducting fins 121, and then along the length of the heat conducting fins 121 to the middle of the length of the heat conducting fins 121. This arrangement allows the heat conducting pipe of each water channel to fully contact the plurality of heat conducting fins 121, thereby improving the utilization rate of the plurality of heat conducting fins 121 and thus enhancing heat exchange efficiency.

[0090] In this embodiment, the edge region 1202 includes A1 sub-region, B1 sub-region, C1 sub-region, and D1 sub-regions distributed at the four corners of the middle region 1201. The middle region 1201 includes A2 sub-region, B2 sub-region, C2 sub-region, and D2 sub-regions corresponding to the A1 sub-region, B1 sub-region, C1 sub-region, and D1 sub-regions respectively. The first heat conduction tubes 133 of the A2 sub-region, B2 sub-region, C2 sub-region, and D2 sub-regions are respectively and correspondingly connected to the second heat conduction tubes 134 of the A1 sub-region, B1 sub-region, C1 sub-region, and D1 sub-regions. The pipeline structure 13 includes a first water distribution pipe 136 and a second water distribution pipe 137. The water inlet pipe 131 is connected to the first water distribution pipe 136, and the second water distribution pipe 137 is connected to the water outlet pipe 132. Both the first water distribution pipe 136 and the second water distribution pipe 137 are provided with four water distribution ports. The four water distribution ports of the first water distribution pipe 136 are respectively connected to the first heat conduction tubes 133 of the A2 sub-region, B2 sub-region, C2 sub-region, and D2 sub-regions, and the four water distribution ports of the second water distribution pipe 137 are respectively connected to the second heat conduction tubes 134 of the A1 sub-region, B1 sub-region, C1 sub-region, and D1 sub-regions. With such a setting, the water flow can be divided into four streams, and the four streams of water respectively exchange heat with the A1 and A2 sub-regions, B1 and B2 sub-regions, C1 and C2 sub-regions, and D1 and D2 sub-regions of the heat conduction fin group 120. The water flow can fully exchange heat with the heat conduction fin group 120, improving the heat exchange efficiency.

[0091] In this embodiment, in the corresponding sub-regions, such as the A1 sub-region and the A2 sub-region, in the water flow direction of the water circuit, multiple first heat conduction tubes 133 are arranged along the length direction of the heat conduction fin group 120, and multiple second heat conduction tubes 134 are sequentially arranged along the width direction and the length direction of the heat conduction fin group 120, and the last second heat conduction tube 134 is located in the middle of the edge region 1202 in the vertical direction. Specifically, in the corresponding sub-regions, when observing along the arrangement direction of the heat conduction fin group 120, the multiple first heat conduction tubes 133 and the multiple second heat conduction tubes 134 as a whole present an extended shape of "匚". This can improve the utilization rate of the heat conduction fin group 120 and is beneficial to miniaturized design. At the same time, the last second heat conduction tube 134 is located in the middle of the edge region 1202 in the vertical direction, so as to facilitate setting the lengths of multiple heat conduction pipelines to be equal, thereby enabling the water flow of multiple water circuits to enter and exit simultaneously.

[0092] In other embodiments, the number of sub-regions in the edge region 1202 and the middle region 1201 can also be other numbers, such as 3 and 5.

[0093] In an embodiment of this implementation manner, please refer to Figure 10 、 Figure 11 和 Figure 13The outer diameter OD of the pipe structure 13 is in the range of 5 mm to 9.5 mm. Specifically, the outer diameters OD of the first heat conducting pipe 133 and the second heat conducting pipe 134 are equal and can be selected from 5 mm, 6.1 mm, 7.5 mm, 8 mm, 9.2 mm, 9.5 mm, etc.

[0094] It is understood that when the outer diameter (OD) of the first and second heat pipes 133, 134 is less than 5 mm, the contact area between the first and second heat pipes 133, 134 and the heat conducting fins 121 is too small, and the heat exchange efficiency of the pipe structure and the multiple heat conducting fins 121 is too low. When the outer diameter (OD) of the first and second heat pipes 133, 134 is greater than 9.5 mm, the area of the heat conducting fins 121 is overly compressed, the contact area between the multiple heat conducting fins 121 and the phase change material is too small, and the heat exchange efficiency between the phase change material and the multiple heat conducting fins 121 is too low. By setting the outer diameter (OD) of the first and second heat pipes 133, 134 to a range between 5 mm and 9.5 mm, the pipe structure and the multiple heat conducting fins 121, as well as the phase change material and the multiple heat conducting fins 121, all have good heat exchange efficiency.

[0095] In one embodiment of this embodiment, please refer to Figure 10 、 Figure 11 、 Figure 13 and Figure 14 , the number of the first heat-conducting tubes 133 and the second heat-conducting tubes 134 are both multiple, and the multiple first heat-conducting tubes 133 and the multiple second heat-conducting tubes 134 are arranged in an array, and the distance range between two adjacent first heat-conducting tubes 133, two adjacent second heat-conducting tubes 134, and adjacent first heat-conducting tubes 133 and second heat-conducting tubes 134 is 20mm-45mm. Specifically, the multiple first heat-conducting tubes 133 and the multiple second heat-conducting tubes 134 are arranged in the longitudinal and transverse directions, and the longitudinal spacing DA1 and the transverse spacing DA2 both meet the requirements of 20mm-45mm. In this embodiment, the transverse spacing DA2 is greater than the longitudinal spacing DA1. In other embodiments, the transverse spacing DA2 may be less than or equal to the longitudinal spacing DA1. The longitudinal spacing DA1 and the transverse spacing DA2 may be 20mm, 25mm, 31mm, 37mm, 40mm, 45mm, etc., respectively.

[0096] It can be understood that when the longitudinal spacing DA1 and the transverse spacing DA2 are less than 20 mm, the first heat pipe 133 and the second heat pipe 134 are distributed too densely, so that the contact area between the multiple heat-conducting plates 121 and the phase change material is too small, the length of the pipeline structure is too long, the heat exchange efficiency between the multiple heat-conducting plates 121 and the phase change material is too low, and the water flow efficiency is too low; when the longitudinal spacing DA1 and the transverse spacing DA2 are greater than 45 mm, the number of the first heat pipe 133 and the second heat pipe 134 is too small, so that the contact area between the first heat pipe 133 and the second heat pipe 134 and the multiple heat-conducting plates 121 is too small, the length of the pipeline structure is too short, the heat exchange efficiency between the pipeline structure and the multiple heat-conducting plates 121 is too low, and the water flow cannot fully exchange heat. By setting the longitudinal spacing DA1 and the transverse spacing DA2 to meet 20mm-45mm, the pipeline structure and the multiple heat-conducting plates 121, the phase change material and the multiple heat-conducting plates 121 have good heat exchange efficiency, and the length of the pipeline structure is appropriate to facilitate the water flow in the pipeline structure to fully exchange heat through the multiple heat-conducting plates 121 and the phase change material.

[0097] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various modifications can be made within the scope of knowledge possessed by a person skilled in the art without departing from the spirit of the present invention. In addition, the embodiments of the present invention and the features of the embodiments can be combined with each other unless there is a conflict.

Claims

1. A phase change water heater, characterized in that: include: Phase change liner; A heating assembly comprising a first cast aluminum heater, a second cast aluminum heater, and a water pump, wherein the first cast aluminum heater is connected to the water inlet of the phase change inner tank, the second cast aluminum heater is connected to the water outlet of the phase change inner tank, and the water pump is connected to the first cast aluminum heater; A water pipe connected to the water pump and used to connect to an external water source; a thermostatic valve having a first water inlet valve port, a second water inlet valve port, and a water outlet valve port, wherein the first water inlet valve port is connected to the water receiving pipe, and the second water inlet valve port is connected to the water outlet of the second cast aluminum heater; a water discharge pipe, connected to the water outlet valve; A bracket, wherein the phase change liner is mounted on one side of the bracket, and the heating component and the thermostatic valve are mounted on the other side of the bracket.

2. The phase change water heater according to claim 1, characterized in that: The first cast aluminum heater and the second cast aluminum heater are arranged side by side.

3. The phase change water heater according to claim 2, characterized in that: The thermostatic valve and the water pump are arranged on the same side of the first cast aluminum heater and the second cast aluminum heater, and the thermostatic valve is opposite to the second cast aluminum heater, and the water pump is opposite to the first cast aluminum heater.

4. The phase change water heater according to claim 1, characterized in that The phase change water heater includes a base and a shock-absorbing pad. The base is arranged on the bracket, the shock-absorbing pad is installed on the base, and the water pump is clamped on the shock-absorbing pad. The axial direction of the output shaft of the water pump is parallel to the installation direction of the shock-absorbing pad and the base.

5. The phase change water heater according to claim 4, characterized in that: The phase change water heater includes a connector, the shock-absorbing pad is provided with a connecting hole, the connector is passed through the connecting hole and connected to the base, and the axial direction of the connecting hole is parallel to the installation direction of the shock-absorbing pad and the base.

6. The phase change water heater according to claim 1, characterized in that The water inlet of the first cast aluminum heater is close to the bracket relative to the water outlet, and is connected to the water pump through a first bellows; and / or the water outlet of the second cast aluminum heater is close to the bracket relative to the water inlet, and is connected to the thermostatic valve through a second bellows.

7. The phase change water heater according to claim 1, characterized in that The water receiving pipe and the water discharging pipe are installed on the bracket and extend in the same direction.

8. The phase change water heater according to claim 1, characterized in that: The phase change liner includes a box body, a heat exchanger and a pipeline structure. The box body has a cavity filled with a phase change material. The heat exchanger is arranged in the cavity and is in heat transfer contact with the phase change material. The pipeline structure is passed through the heat exchanger and connects the first cast aluminum heater and the second cast aluminum heater.

9. The phase change water heater according to claim 8, characterized in that: The heat exchanger includes a heat conducting plate group, the distance between two adjacent heat conducting plates in the heat conducting plate group ranges from 1 mm to 5 mm, and the viscosity of the phase change material in a liquid state ranges from 1000 Pa·s to 5000 Pa·s.

10. The phase change water heater according to claim 8, characterized in that When the phase change material is in a solid state, there is a gap between the phase change material and the top wall of the cavity, and the ratio of the gap to the volume of the cavity is in a range of 5%-20%.

11. The phase change water heater according to claim 8, characterized in that The pipeline structure includes a water inlet pipe, a water outlet pipe and multiple heat conduction pipes. The multiple heat conduction pipes are arranged in the heat exchanger. The heat exchanger has a middle area and an edge area surrounding the middle area. The heat conduction pipes extend from the middle area to the edge area. The multiple heat conduction pipes are all connected with the water inlet pipe and the water outlet pipe to form multiple water channels flowing into the middle area and flowing out of the edge area.

12. The phase change water heater according to claim 11, characterized in that A plurality of the heat conduction pipes are connected in parallel.

13. The phase change water heater according to claim 11, characterized in that The heat exchanger includes a plurality of heat conducting fins, and the heat conducting pipeline is arranged in a circuitous manner along the arrangement direction of the plurality of heat conducting fins to extend from the middle area to the edge area.

14. The phase change water heater according to claim 13, characterized in that In a plane perpendicular to the arrangement direction of the plurality of heat conducting sheets, the heat conducting pipe first extends along the length direction of the heat conducting sheet, then extends along the width direction of the heat conducting sheet, and then extends along the length direction of the heat conducting sheet to the middle of the heat conducting sheet in the length direction.

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