Running water instant heating type phase change water heater

Abstract

The utility model belongs to the field of water heaters. The utility model discloses a running water instant heating type phase change water heater which comprises a phase change inner container used for storing energy. A heating element; the water pipe is provided with a water inlet and a water outlet; the heat exchange assembly is arranged between the phase change inner container for energy storage and the water pipe, the heat exchange assembly comprises a first heat exchange element and a second heat exchange element, the first heat exchange element is connected with the phase change inner container for energy storage and the heating element, and the first heat exchange element is connected with the phase change inner container for energy storage and the second heat exchange element; the second heat exchange element is connected with the first heat exchange element and the water pipe. The heating element heats the phase-change inner container for energy storage through the first heat exchange element, the phase-change inner container for energy storage heats the water pipe through the first heat exchange element and the second heat exchange element, the phase-change inner container for energy storage and the water pipe are mutually independent, heat exchange is conducted between the phase-change inner container for energy storage and the water pipe through the heat exchange assembly, and heat exchange efficiency is improved. Hot water does not need to be stored, and running water is instantly heated.

Description

Technical Field

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

[0002] Traditional water heaters store water in a water tank and heat the domestic water in the water tank through a heater to store energy. This is a storage water heater, which has the following disadvantages: 1. Storing and heating water in the water tank will cause scaling and other problems in the water tank, the water quality in the water tank will deteriorate, and the water heater will have a dead water problem; 2. The water in the water tank circulates while hot water is discharged and cold water is taken in. The hot water in the water tank cannot be fully utilized, and the amount of mixed water is small; 3. The hot water in the water tank is not used up, and the remaining hot water is wasted; 4. The storage water heater needs to store hot water, which is large in size and occupies a large space. In order to solve the above problems, a phase change water heater was produced, which uses phase change materials to store heat.

[0003] A phase change water heater refers to a water heater filled with phase change materials. Phase change materials refer to substances that change their material state as temperature changes and can provide latent heat. The process of changing physical properties is called a phase change process. During the process, the phase change material will absorb or release a large amount of latent heat.

[0004] In the existing phase change water heater, the water pipe is generally directly arranged in the phase change inner tank, and two valves are provided at both ends of the water pipe arranged in the phase change inner tank. When the two valves are closed, the part of the water pipe arranged in the phase change inner tank is intercepted, thereby forming a closed internal circulation; when the phase change inner tank is in the energy storage state, the two valves of the water pipe are closed to form a closed internal circulation. At this time, the water in the water pipe is used as a heat exchange medium, and the heater heats the phase change inner tank by exchanging heat with the water in the water pipe, and the phase change inner tank absorbs heat and stores energy; when the phase change water heater is in the water use state, the phase change material releases the stored heat energy. At this time, the two valves of the water pipe are opened, and the water in the water pipe as the heating medium flows out in the form of domestic water for use, and the phase change inner tank releases heat.

[0005] However, the phase change water heater using the above technical solution has the following disadvantages: 1. It is necessary to store a certain amount of domestic water in the phase change water heater for use as a heat exchange medium. Since there are many impurities in domestic water, domestic water is repeatedly heated during the closed internal circulation heating process as a heat exchange medium, which easily generates scale and accumulates in the water pipe. The scale not only affects the water quality, but also affects the heat exchange efficiency; 2. When the heat storage and heat release states of the phase change tank change, the operation requires the user to control multiple valves, which is relatively cumbersome; 3. In order to improve the heat exchange efficiency of this type of phase change water heater, it is generally necessary to set the water pipe arranged in the phase change tank into a curved shape. In this way, scale is easy to accumulate in the curved part of the water pipe, and the scale is difficult to clean, which is easy to clog the water pipe over a long period of time. Since the water pipe is connected to the phase change tank as a whole, it is difficult to replace the water pipe separately, which affects the service life of the phase change water heater. Utility Model Content

[0006] In order to overcome at least one defect of the above-mentioned prior art, the utility model provides a live water instant phase change water heater. The heating element in the utility model heats the energy storage phase change inner tank through the first heat exchange element. The energy storage phase change inner tank in the utility model heats the water pipe through the first heat exchange element and the second heat exchange element. The energy storage phase change inner tank and the water pipe in the utility model are independent of each other. The two use heat exchange components to exchange heat, and there is no need to store hot water, so that live water can be heated instantly.

[0007] The technical solution adopted by the utility model to solve the problem is:

[0008] A live water instant phase change water heater, comprising:

[0009] Phase change liner for energy storage;

[0010] Heating elements;

[0011] A water pipe, the water pipe having a water inlet and a water outlet;

[0012] A heat exchange component, the heat exchange component is arranged between the energy storage phase change inner tank and the water pipe, the heat exchange component includes a first heat exchange element and a second heat exchange element, the first heat exchange element connects the energy storage phase change inner tank and the heating element, and the first heat exchange element connects the energy storage phase change inner tank and the second heat exchange element, and the second heat exchange element connects the first heat exchange element and the water pipe;

[0013] The heating element heats the energy storage phase change inner tank through the first heat exchange element, and the energy storage phase change inner tank heats the water pipe through the first heat exchange element and the second heat exchange element.

[0014] In a preferred embodiment, the first heat exchange element includes a coil and a heat exchange medium, the heat exchange medium is enclosed in the coil, and at least a portion of the coil is inserted into the phase change inner tank for energy storage.

[0015] In a preferred embodiment, the live water instant phase change water heater includes a pump body, which is arranged on the coil. Under the action of the pump body, the heat exchange medium forms a closed internal circulation in the coil, and the coil and the water pipe are not connected to each other.

[0016] In a preferred embodiment, the phase change inner container for energy storage is filled with phase change material.

[0017] In a preferred embodiment, the phase change material is a hydrated salt phase change material or a wax phase change material.

[0018] In a preferred embodiment, the heating element is an electric heater.

[0019] In a preferred embodiment, the second heat exchange element is one or more of a heat exchange plate, a heat exchange tube and a heat exchange fin.

[0020] In a preferred embodiment, the live water instant phase change water heater comprises a shell, and the energy storage phase change inner tank, the heating element and the heat exchange assembly are all arranged in the inner cavity of the shell.

[0021] In a preferred embodiment, a heat-insulating layer is provided on the shell, and the heat-insulating layer is arranged around the shell.

[0022] In a preferred embodiment, the water pipe passes through the shell, and the water inlet and the water outlet of the water pipe are both arranged outside the shell.

[0023] In summary, the utility model has the following technical effects: the heating element in the utility model heats the energy storage phase change inner tank through the first heat exchange element, the energy storage phase change inner tank in the utility model heats the water pipe through the first heat exchange element and the second heat exchange element, the energy storage phase change inner tank and the water pipe in the utility model are independent of each other, the energy storage phase change inner tank and the water pipe use a heat exchange component to exchange heat, there is no need to store hot water, and live water can be heated instantly, which is convenient to operate and easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of the utility model.

[0025] The meanings of the reference numerals are as follows:

[0026] 10. Phase change inner tank for energy storage, 20. Heating element, 30. Water pipe, 301. Water inlet, 302. Water outlet, 40. Heat exchange component, 401. First heat exchange element, 4011. Coil, 402. Second heat exchange element, 50. Pump body, 60. Shell, 70. Insulation layer. DETAILED DESCRIPTION

[0027] For better understanding and implementation, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0028] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0030] See also Figure 1 The utility model discloses a live water instant phase change water heater, comprising: a phase change inner tank 10 for energy storage; a heating element 20; a water pipe 30, the water pipe 30 having a water inlet 301 and a water outlet 302; a heat exchange component 40, the heat exchange component 40 is arranged between the phase change inner tank 10 for energy storage and the water pipe 30, the heat exchange component 40 comprises a first heat exchange element 401 and a second heat exchange element 402, the first heat exchange element 401 connects the phase change inner tank 10 for energy storage and the heating element 20, and the first heat exchange element 401 connects the phase change inner tank 10 for energy storage and the second heat exchange element 402, the second heat exchange element 402 connects the first heat exchange element 401 and the water pipe 30; the heating element 20 heats the phase change inner tank 10 for energy storage through the first heat exchange element 401, and the phase change inner tank 10 for energy storage heats the water pipe 30 through the first heat exchange element 401 and the second heat exchange element 402.

[0031] It is understandable that in order to ensure that the water pipe 30 can produce hot water, the diameter of the water pipe 30 is matched with the size of the second heat exchange element 402 .

[0032] Based on the above structure, the heating element 20 in the utility model heats the energy storage phase change inner tank 10 through the first heat exchange element 401. During this process, the energy storage phase change inner tank 10 absorbs heat and stores heat; the energy storage phase change inner tank 10 in the utility model heats the water pipe 30 through the first heat exchange element 401 and the second heat exchange element 402. During this process, the energy storage phase change inner tank 10 releases heat, thereby turning the water with a lower temperature in the water pipe 30 into water with a higher temperature. The energy storage phase change inner tank 10 and the water pipe 30 in the utility model are independent of each other. The energy storage phase change inner tank 10 and the water pipe 30 use the heat exchange component 40 to exchange heat. There is no need to store hot water, and the running water can be heated instantly. The operation is convenient and easy to use.

[0033] In the embodiment of the utility model, the first heat exchange element 401 includes a coil 4011 and a heat exchange medium, the heat exchange medium is enclosed in the coil 4011, and at least a portion of the coil 4011 is inserted into the phase change inner tank 10 for energy storage.

[0034] It can be understood that the coil 4011 is a closed tube body, and the interior of the coil 4011 has a cavity for accommodating the heat exchange medium; the more the coil 4011 is inserted into the phase change inner liner 10 for energy storage, the larger the contact area between the coil 4011 and the phase change inner liner 10 for energy storage, and the better the heat exchange effect between the first heat exchange element 401 and the phase change inner liner 10 for energy storage.

[0035] In an embodiment of the utility model, the live water instant phase change water heater includes a pump body 50, which is arranged on the coil 4011. Under the action of the pump body 50, the heat exchange medium forms a closed internal circulation in the coil 4011, and the coil 4011 and the water pipe 30 are not connected to each other.

[0036] Specifically, the heat exchange medium is a fluid, and the pump body 50 is used to transport the fluid, realize the circulation of the fluid in the coil 4011, and accelerate the heat exchange process; during the circulation of the heat exchange medium in the coil 4011, the heat exchange between the heating element 20 and the first heat exchange element 401, the heat exchange between the first heat exchange element 401 and the phase change inner tank 10 for energy storage, and the heat exchange between the first heat exchange element 401 and the second heat exchange element 402 are realized.

[0037] More specifically, the heat exchange medium is a liquid medium or a gas medium; the liquid medium has a higher heat capacity and a higher thermal conductivity, and can effectively transfer heat. Common liquid media are water, heat transfer oil, ethylene glycol or alcohol, etc.; the gas medium has a lower density and a lower heat capacity, and the heat transfer efficiency is relatively low. Common gas media are air, nitrogen or hydrogen, etc.; the pump body 50 is a water pump or an air pump. When the heat exchange medium is a liquid medium, a water pump can be selected, and when the heat exchange medium is a gas medium, an air pump can be selected; the specific type of the heat exchange medium and the specific type of the pump body 50 are selected according to actual conditions, and are not limited to this.

[0038] Since the coil 4011 and the water pipe 30 in the utility model are not connected to each other, the heat exchange medium only circulates internally in the coil 4011, and the heat exchange medium and the domestic water in the water pipe 30 are isolated from each other and do not interfere with each other. In this way, the heat exchange medium can be selected, and a heat exchange medium with less impurities, such as pure water, can be selected according to the actual application scenario to reduce the scaling of the heat exchange medium during repeated heating. The heat exchange medium with less impurities can be repeatedly heated and less scaling. The phase-changing water heater in the prior art needs to store part of the domestic water as the heat exchange medium, such as tap water. The domestic water contains more impurities, and solids are easily precipitated to produce scale during the repeated heating process. The scale affects the water quality, heat exchange efficiency and the smooth water outlet of the water pipe 30. Compared with the prior art, the utility model reduces the generation of scale, improves the heat exchange efficiency of the phase change inner tank 10 for energy storage and the service life of the coil 4011.

[0039] Furthermore, since the coil 4011 and the water pipe 30 are not connected to each other, and the utility model uses the first heat exchange element 401 and the second heat exchange element 402 to heat the domestic water in the water pipe 30 by indirect heating, the domestic water does not directly contact the electric heater, which is safer.

[0040] In the embodiment of the utility model, the phase change inner container 10 for energy storage is filled with phase change material.

[0041] It can be understood that by utilizing the energy storage phase change liner 10 to absorb heat and store energy as well as release heat, the power requirement for the heating element 20 is reduced, and a smaller power heating element 20 can be used; if the heating element 20 is used to directly heat the water pipe 30, a larger power heating element 20 is required to achieve an instant heating effect.

[0042] In the embodiments of the present invention, the phase change material is a hydrated salt phase change material or a wax phase change material. Both the hydrated salt phase change material and the wax phase change material are existing phase change materials, such as paraffin. The phase change energy storage and release process of the phase change material is an existing technology and will not be repeated here. The selection of the phase change material depends on the actual application scenario and is not limited to this.

[0043] In the embodiment of the present invention, the heating element 20 is an electric heater.

[0044] Specifically, the electric heater can adopt electromagnetic heating, infrared heating or resistance heating, for example, a resistance wire heater or a resistance coil heater can be adopted; the electric heater adopts the existing electric heating technology, and how to realize heating specifically is the existing technology and will not be elaborated here.

[0045] More specifically, the electric heater can be arranged on the outside of the coil 4011, that is, an indirect heating method is adopted, and the electric heater heats the coil 4011, and the coil 4011 then transfers the heat to the heat exchange medium through heat conduction, thereby heating the heat exchange medium; the electric heater can also be directly arranged inside the coil 4011, that is, a direct heating method is adopted, and the electric heater directly heats the heat exchange medium; the specific position of the electric heater and the specific heating method are set according to actual conditions, and are not limited to this.

[0046] In the embodiment of the present utility model, the second heat exchange element 402 is one or more of a heat exchange plate, a heat exchange tube and a heat exchange fin.

[0047] Specifically, see Figure 1 The coil 4011 includes a coil body and a connecting tube body, the coil body and the connecting tube body are interconnected to form the coil 4011, the connecting tube body is arranged beside the coil body, the coil body is arranged as a whole in the phase change inner tank 10 for energy storage, the connecting tube body is arranged outside the phase change inner tank 10 for energy storage, the heating element 20 and the second heat exchange element 402 are both arranged on the connecting tube body, so that the heating element 20 and the second heat exchange element 402 are both arranged outside the phase change inner tank 10 for energy storage, and the second heat exchange element 402 is arranged around the connecting tube body and the outside of the water pipe 30; therefore, the setting of the heating element 20 and the second heat exchange element 402 does not occupy the space of the phase change inner tank 10 for energy storage, thereby increasing the contact area between the first heat exchange element 401 and the phase change inner tank 10 for energy storage, thereby improving the heat exchange efficiency between the first heat exchange element 401 and the phase change inner tank 10 for energy storage.

[0048] More specifically, the coil body is wrapped in the phase change inner tank 10 for energy storage, and the coil body includes straight tubes and curved tubes that are interconnected, multiple straight tubes and multiple curved tubes are arranged alternately, multiple straight tubes are arranged in parallel with each other, and the spacing between multiple straight tubes is 1cm-5cm. The installation gap between adjacent straight tubes is filled with phase change material, and the installation gap between adjacent curved tubes is filled with phase change material; in this way, the contact area between the coil body and the phase change inner tank 10 for energy storage is increased, which is conducive to achieving uniform heat exchange and improving the heat exchange efficiency between the first heat exchange element 401 and the phase change inner tank 10 for energy storage.

[0049] When the second heat exchange element 402 is a heat exchange plate, the heat exchange plate is wrapped around the connecting pipe body and the outside of the water pipe 30 to achieve the external connection between the coil 4011 and the water pipe 30, thereby achieving the external connection between the first heat exchange element 401 and the water pipe 30. The size of the heat exchange plate is determined according to the size of the connecting pipe body and the water pipe 30, so as to increase the contact area between the heat exchange plate and the connecting pipe body and the water pipe 30, thereby improving the heat exchange efficiency. When the second heat exchange element 402 is a heat exchange tube, the heat exchange tube is wrapped around the connecting pipe body and the outside of the water pipe 30 to achieve the external connection between the coil 4011 and the water pipe 30, thereby achieving the external connection between the first heat exchange element 401 and the water pipe 30. The size of the heat exchange tube is determined according to the size of the connecting pipe The size of the heat exchanger 4011 is determined according to the size of the connecting pipe body and the water pipe 30, so as to increase the contact area between the heat exchange tube and the connecting pipe body and the water pipe 30, thereby improving the heat exchange efficiency; when the second heat exchange element 402 is a heat exchange plate, a plurality of heat exchange plates are provided, and the plurality of heat exchange plates are arranged at intervals along the extension direction of the connecting pipe body and the extension direction of the water pipe 30, and the plurality of heat exchange plates are sleeved on the outside of the connecting pipe body and the water pipe 30 to realize the external connection of the coil 4011 and the water pipe 30, thereby realizing the external connection of the first heat exchange element 401 and the water pipe 30, and the size of the heat exchange plate is determined according to the size of the connecting pipe body and the water pipe 30, so as to increase the contact area between the heat exchange plate and the connecting pipe body and the water pipe 30, thereby improving the heat exchange efficiency.

[0050] Of course, the structural shape of the second heat exchange element 402 can be a combination of a heat exchange plate and a heat exchange tube, the structural shape of the second heat exchange element 402 can also be a combination of a heat exchange plate and a heat exchange fin, the structural shape of the second heat exchange element 402 can also be a combination of a heat exchange tube and a heat exchange fin, and the structural shape of the second heat exchange element 402 can also be a combination of a heat exchange plate, a heat exchange tube and a heat exchange fin. Therefore, the specific structural shape of the second heat exchange element 402 is based on the ability to achieve heat exchange, and is not limited to this.

[0051] In the embodiment of the utility model, the coil 4011, the second heat exchange element 402 and the water pipe 30 are all made of heat conductive materials, such as metal copper, metal aluminum or metal iron. Preferably, the coil 4011, the second heat exchange element 402 and the water pipe 30 are all made of metal copper.

[0052] In an embodiment of the utility model, the live water instant phase change water heater includes a shell 60, and the energy storage phase change inner tank 10, the first heat exchange element 401, the heating element 20, the second heat exchange element 402 and the pump body 50 are all arranged in the inner cavity of the shell 60; the shell 60 plays a protective and heat-insulating role for the energy storage phase change inner tank 10, the heating element 20, the heat exchange component 40 and the pump body 50.

[0053] In an embodiment of the utility model, the phase change inner tank 10 for energy storage is arranged at one end of the inner cavity of the shell 60, and the water pipe 30 is arranged at the other end of the inner cavity of the shell 60, and there is air between the phase change inner tank 10 for energy storage and the water pipe 30; of course, in other embodiments, the space between the phase change inner tank 10 for energy storage and the water pipe 30 can also be filled with liquid, such as water.

[0054] In the embodiment of the utility model, a heat-insulating layer 70 is provided on the shell 60, and the heat-insulating layer 70 is arranged around the shell 60. In this way, the heat-insulating layer 70 can insulate the inner cavity of the shell 60, and the heat-insulating layer 70 can prevent the heat loss of the energy storage phase change liner 10, the first heat exchange element 401, the second heat exchange element 402 and the water pipe 30.

[0055] Specifically, the insulation layer 70 can be formed of insulation materials. Currently commonly used insulation materials mainly include expanded polystyrene boards, extruded polystyrene boards, rubber powder polystyrene particle insulation slurry, polyurethane foam materials, rock wool boards, etc.; the insulation layer 70 can also be a vacuum layer, and insulation is achieved by setting a vacuum layer; the specific form of the insulation layer 70 is selected according to actual conditions, and is not limited to this.

[0056] More specifically, the thermal insulation layer 70 may be disposed on the outside of the shell 60 , or the thermal insulation layer 70 may be disposed in the inner cavity of the shell 60 ; preferably, the thermal insulation layer 70 is disposed in the inner cavity of the shell 60 .

[0057] In the embodiment of the utility model, the water pipe 30 passes through the housing 60 , and the water inlet 301 of the water pipe 30 and the water outlet 302 of the water pipe 30 are both arranged outside the housing 60 .

[0058] It can be understood that the water inlet 301 of the water pipe 30 and the water outlet 302 of the water pipe 30 are respectively arranged at the two ends of the water pipe 30, the water inlet 301 of the water pipe 30 is connected to the municipal water pipeline, and the water outlet 302 of the water pipe 30 is connected to equipment such as showers. Tap water enters the water pipe 30 from the water inlet 301 of the water pipe 30 and flows out from the water outlet 302 of the water pipe 30 for use.

[0059] In an embodiment of the utility model, the water pipe 30 is a straight water pipe, which has smooth water discharge, is not easy to accumulate scale, and is easy to clean, thereby extending the service life of the live water instant phase change water heater; of course, in other embodiments, the water pipe 30 is a curved water pipe, which can increase its contact area with the second heat exchange element 402 and improve the heat exchange efficiency; compared with the prior art method in which the water pipe is directly inserted into the energy storage phase change tank 10 to achieve heat exchange, the live water instant phase change water heater uses the first heat exchange element 401 and the second heat exchange element 402 to separate the water pipe 30 from the energy storage phase change tank 10, so that the water pipe 30 is independent of the energy storage phase change tank 10. While achieving heat exchange between the water pipe 30 and the energy storage phase change tank 10, it is convenient to replace the water pipe 30. After long-term use, the straight water pipe and the curved water pipe can be replaced separately, thereby extending the overall service life of the live water instant phase change water heater.

[0060] The specific working process of the utility model is as follows:

[0061] When the phase change inner liner 10 for energy storage is storing heat: the heating element 20 and the pump body 50 are both turned on to work, and the heat exchange medium forms a closed internal circulation in the coil 4011. When the heat exchange medium is circulating in the coil 4011, the heat exchange medium is heated by the heating element 20 to obtain a heat exchange medium with an increased temperature, and the heat exchange medium with a higher temperature exchanges heat with the phase change inner liner 10 for energy storage during the circulation process, that is, the heating element 20 heats the phase change inner liner 10 for energy storage through the first heat exchange element 401, and finally realizes the heat storage of the phase change inner liner 10 for energy storage.

[0062] When the energy storage phase change inner tank 10 releases heat, that is, when it is in the water use state: domestic water at room temperature is introduced into the water inlet 301 of the water pipe 30, and the heat exchange medium continues to form a closed internal circulation in the coil 4011. When the heat exchange medium circulates internally in the coil 4011, the coil 4011 exchanges heat with the second heat exchange element 402, and the second heat exchange element 402 transfers the obtained heat to the water pipe 30, that is, the energy storage phase change inner tank 10 heats the water pipe 30 through the first heat exchange element 401 and the second heat exchange element 402. In this process, the energy storage phase change inner tank 10 releases heat, thereby heating the domestic water in the water pipe 30, and hot water is obtained at the water outlet 302 of the water pipe 30.

[0063] Thus, compared with the prior art, the heat exchange medium in the utility model forms a closed internal circulation in the coil 4011, and the heat exchange medium circulates in the phase change inner tank 10 for energy storage. The phase change inner tank 10 for energy storage and the water pipe 30 are independent of each other, and the heat exchange medium and the hot water are isolated from each other. The utility model does not need to store hot water, reduces the generation of scale, ensures water quality, and realizes instant heating of running water.

[0064] The technical means disclosed in the solution of the utility model are not limited to the technical means disclosed in the above-mentioned implementation mode, but also include technical solutions composed of any combination of the above technical features. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the utility model, and these improvements and modifications are also regarded as the protection scope of the utility model.

Claims

1. A live water instantaneous phase change water heater, characterized in that: include: Phase change liner for energy storage; Heating elements; A water pipe, wherein the water pipe has a water inlet and a water outlet; A heat exchange component, the heat exchange component is arranged between the energy storage phase change inner tank and the water pipe, the heat exchange component includes a first heat exchange element and a second heat exchange element, the first heat exchange element connects the energy storage phase change inner tank and the heating element, and the first heat exchange element connects the energy storage phase change inner tank and the second heat exchange element, and the second heat exchange element connects the first heat exchange element and the water pipe; The heating element heats the energy storage phase change inner tank through the first heat exchange element, and the energy storage phase change inner tank heats the water pipe through the first heat exchange element and the second heat exchange element.

2. The instantaneous phase change water heater according to claim 1, characterized in that: The first heat exchange element includes a coil and a heat exchange medium, the heat exchange medium is enclosed in the coil, and at least a portion of the coil is inserted into the phase change inner tank for energy storage.

3. The instantaneous phase change water heater according to claim 2, characterized in that: It comprises a pump body, which is arranged on the coil. The heat exchange medium forms a closed internal circulation in the coil under the action of the pump body, and the coil and the water pipe are not connected to each other.

4. The instantaneous phase change water heater according to claim 1, characterized in that: The energy storage phase change liner is filled with phase change material.

5. The instantaneous phase change water heater according to claim 4, characterized in that: The phase change material is a hydrated salt phase change material or a wax phase change material.

6. The instantaneous phase change water heater according to claim 1, characterized in that: The heating element is an electric heater.

7. The instantaneous phase change water heater according to claim 1, characterized in that: The second heat exchange element is one or more of a heat exchange plate, a heat exchange tube and a heat exchange fin.

8. The instantaneous phase change water heater according to claim 1, characterized in that: It comprises a shell, wherein the phase change inner tank for energy storage, the heating element and the heat exchange component are all arranged in the inner cavity of the shell.

9. The instantaneous phase change water heater according to claim 8, characterized in that: A heat-insulating layer is arranged on the shell, and the heat-insulating layer is arranged around the shell.

10. The instantaneous phase change water heater according to claim 8, characterized in that: The water pipe passes through the shell, and the water inlet and the water outlet of the water pipe are both arranged outside the shell.

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