Visual phase change electric water heater

Abstract

The visual phase change electric water heater comprises a box body, a water pipe and a heating module, the box body comprises a heat storage area and a heat exchange area, a phase change material is arranged in the heat storage area, a first heat exchange medium is arranged in the heat exchange area, the water pipe penetrates through the heat exchange area, and the heating module is arranged in the heat exchange area. The heating module is arranged in the heat storage area or the heat exchange area, the first heat exchange medium is in direct contact or indirect contact with the water pipe and the phase change material so as to balance the temperature among the water pipe, the phase change material and the first heat exchange medium, and the box body is at least partially transparent to form an observation part. The part, exposed to the observation part, of the water pipe is made of a transparent material for observing water flow in the water pipe, and the box body and the water pipe are provided with mutually corresponding transparent parts, so that running water flowing in the water pipe can be visually observed. In addition, flowing water is adopted for heating, water does not need to be stored in advance, the heated water flows all the time, incrustation is not prone to staying, and a series of problems caused by the incrustation are effectively solved.

Description

Technical Field

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

[0002] A water heater is a device that uses various physical principles to increase the temperature of cold water into hot water within a certain period of time. Ordinary electric water heaters in the prior art are generally water storage electric water heaters, which cannot achieve running water bathing. Bacteria are easily bred in the water storage tank, and hot water is retained in the water storage tank for a long time, which is easy to produce scale. The scale produced will cause the water quality to deteriorate and even cause blockage, affecting the normal use of the water heater. Utility Model Content

[0003] In order to overcome at least one of the defects of the prior art described above, the utility model provides a visual phase change electric water heater, which can solve the problem that scale is easily generated in storage type electric water heaters and the flow process of live water in live water heating is not intuitive enough.

[0004] The technical solution adopted by the utility model to solve the problem is:

[0005] A visualized phase-change electric water heater, comprising:

[0006] A box body, the box body comprising a heat storage area and a heat exchange area, the heat storage area is provided with a phase change material, and the heat exchange area is provided with a first heat exchange medium;

[0007] a water pipe, the water pipe being arranged through the heat exchange area and capable of heat exchange with the first heat exchange medium;

[0008] A heating module, wherein the heating module is arranged in the heat storage area and / or the heat exchange area;

[0009] Among them, the heat storage area and the heat exchange area can perform heat exchange;

[0010] The box body is at least partially transparent to form an observation portion.

[0011] By adopting the above solution, the box and the water pipe are provided with corresponding transparent parts, so that the running water flowing in the water pipe can be directly observed. In addition, the running water is used for heating, and there is no need to store water in advance. The heated water is always flowing, and scale is not easy to stay, which effectively reduces a series of problems caused by scale.

[0012] Furthermore, it also includes a water pump, which is arranged in the heat storage area and / or the heat exchange area.

[0013] By adopting the above solution, the water pump accelerates the temperature uniformity between the heat exchange area and the heat storage area, ensuring the effect of the heating and heat storage process.

[0014] Furthermore, a heat storage pipeline is provided in the heat storage area, the phase change material is provided in the heat storage pipeline, the first heat exchange medium is a first liquid heat exchange medium, the first heat exchange medium is provided in the heat storage area, and the first heat exchange medium immerses the heat storage area and the heat exchange area.

[0015] By adopting the above scheme, the first liquid heat exchange medium circulates inside the tank. Compared with the prior art in which new water always flows into the tank (such as a water storage electric water heater), the amount of scale generated will be greatly reduced, and the normal use of the water heater will not be affected by a very small amount of scale. In addition, under the above environment, the water pump can accelerate the mixing of the liquid heat exchange medium in the liquid storage tank, making the temperature of the liquid heat exchange medium in the liquid storage tank more uniform.

[0016] Furthermore, a partition is provided between the heat storage area and the heat exchange area.

[0017] Furthermore, a heat exchanger is provided in the heat storage area, part of the heat exchanger extends to the heat exchange area, the first heat exchange medium and the phase change material both exchange heat with the heat exchanger, the water pump is connected to the heat exchanger to drive the flow of liquid in the heat exchanger, and part of the pipelines of the heat exchanger and the water pipe both pass through the first heat exchange medium.

[0018] By adopting the above scheme, the coil heat exchanger can increase the contact area between the coil heat exchanger and the phase change material, and between the coil heat exchanger and the liquid in the coil heat exchanger, thereby improving the heat exchange efficiency of the phase change material, the coil heat exchanger and the liquid in the coil heat exchanger.

[0019] Furthermore, the heat exchanger is a coil heat exchanger, the coil heat exchanger has a coil liquid inlet and a coil liquid outlet, and the coil heat exchanger is a closed circulation pipeline structure;

[0020] The closed circulation pipeline structure is that the coil liquid inlet is connected to the coil liquid outlet;

[0021] The coil liquid inlet and the coil liquid outlet are both connected to the heat exchange area to form an open circulation pipeline structure, and the first heat exchange medium is a first liquid heat exchange medium.

[0022] By adopting the above solution, a variety of feasible pipe connection methods for the coil heat exchanger are provided.

[0023] Furthermore, the coil heat exchanger in the closed circulation pipeline structure is filled with a second heat exchange medium, which is a second liquid heat exchange medium, and the water pump is used to pump the second liquid heat exchange medium in the coil heat exchanger to circulate.

[0024] By adopting the above solution, the coil heat exchanger in the closed circulation pipeline structure is filled with the second heat exchange medium, and the heat exchange between the phase change material, the second heat exchange medium and the first heat exchange medium is completed by the second heat exchange medium circulating in the coil heat exchanger.

[0025] Furthermore, the water pump in the open circulation pipeline structure is used to pump the first heat exchange medium of the liquid to circulate in the coil heat exchanger and the heat exchange area.

[0026] By adopting the above solution, the liquid first heat exchange medium (ie, the first liquid heat exchange medium) is circulated between the coil heat exchanger and the heat exchange zone, and heat exchange is completed through the circulation of the first heat exchange medium.

[0027] Furthermore, the portion of the water pipe exposed to the observation portion is made of a transparent material for observing the water flow inside the water pipe.

[0028] By adopting the above solution, not only the flow of the liquid heat exchange medium inside the water heater can be observed through the observation part, but also the flow of the liquid in the water pipe can be directly observed.

[0029] Furthermore, the water pipe is provided with a heat extraction structure.

[0030] By adopting the above solution, the heat extraction structure can increase the heat exchange rate between the water pipe and the first heat exchange medium, thereby ensuring that the water pipe can achieve a better heating effect on the water in the water pipe in the smallest possible space.

[0031] Furthermore, the heating module is arranged in the heat exchange area, on the coil heat exchanger or in the heat storage area.

[0032] By adopting the above solution, the heating module can be freely selected to be arranged in the heat exchange area, on the coil heat exchanger or in the heat storage area.

[0033] In summary, the visualized phase-change electric water heater provided by the utility model has the following technical effects:

[0034] 1. The box and the water pipe are provided with corresponding transparent parts, so that the running water in the water pipe can be directly observed, which increases the premium value of the product;

[0035] 2. Live water heating is used, and there is no need to store water in advance. The heated water is always flowing, so scale is not easy to stay, which effectively reduces a series of problems caused by scale;

[0036] 3. Compared with the prior art where new water is constantly flowing into the tank (such as a storage-type electric water heater), the amount of scale produced will be greatly reduced, and the normal use of the water heater will not be affected by a very small amount of scale. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a schematic diagram of the structure of the phase change electric water heater of Embodiment 1 and Embodiment 2 of the present utility model;

[0038] Figure 2 This is a schematic structural diagram of a second layout of a heat exchange device according to Embodiment 2 of the present utility model;

[0039] Figure 3 This is a schematic diagram of the first layout of the phase change electric water heater of Example 3 of the utility model;

[0040] Figure 4 This is a schematic diagram of the second layout of the phase change electric water heater of Example 3 of the utility model;

[0041] Figure 5 This is a schematic diagram of the structure of the third layout of the phase change electric water heater of Example 3 of the utility model.

[0042] Among them, the meanings of the figure numbers are as follows: 100, box body; 110, heat storage area; 120, heat exchange area; 130, phase change material; 140, first heat exchange medium; 150, second heat exchange medium; 160, partition; 210, heat storage pipeline; 220, coil heat exchanger; 300, heating module; 400, water pipe; 410, heat extraction structure; 500, water pump. DETAILED DESCRIPTION

[0043] For better understanding and implementation, the technical solutions in the embodiments of the present invention will be clearly and completely described and discussed below in conjunction with the accompanying drawings of the present invention. Obviously, what is described here is only a part of the examples of the present invention, not all the examples. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0044] In order to facilitate the understanding of the embodiments of the present utility model, the following will be further explained by taking specific embodiments as examples in conjunction with the drawings, and each embodiment does not constitute a limitation on the embodiments of the present utility model.

[0045] 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.

[0046] 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.

[0047] Example 1

[0048] See also Figure 1 As shown, the utility model discloses a visualized phase-change electric water heater, comprising a housing 100, a water pipe 400 and a heating module 300, the housing 100 comprises a heat storage area 110 and a heat exchange area 120, a phase-change material 130 is arranged in the heat storage area 110, a first heat exchange medium 140 is arranged in the heat exchange area 120, the water pipe 400 is arranged through the heat exchange area 120, and the water pipe 400 and the first heat exchange medium 140 can perform heat exchange, the heating module 300 is arranged in the heat storage area 110 and / or the heat exchange area 120, wherein the heat storage area 110 and the heat exchange area 120 can perform heat exchange, and the housing 100 is at least partially transparent to form an observation portion.

[0049] Specifically, the housing 100 is divided into a heat storage area 110 and a heat exchange area 120. The heat storage area 110 is provided with a phase change material 130 for heat storage. The heat stored in the phase change material 130 is gradually released during the process of heating the running water, providing a heat source for heating the running water. The heat exchange area 120 is provided with a first heat exchange medium 140. The first heat exchange medium 140 transfers the heat stored in the heat storage area 110 to the water pipe 400 during the cold water heating stage of the electric water heater, and then transfers it to the running water to be heated in the water pipe 400 through the water pipe 400. The water pipe 400 passes through the heat exchange area 120, one end of which is the inflow end of the water pipe 400, and the other end is the outflow end of the water pipe 400. The running water flows in through the inflow end of the water pipe 400 and flows out through the outflow section of the water pipe 400. The heating is completed during the flow process, that is, the running water is heated. The heating module 300 can be selectively arranged in the heat storage area 110 or the heat exchange area 120. When the heating module 300 is arranged in the heat exchange area 120, the first heat exchange medium 140 is used to transfer the heat of the heating module 300 to the heat storage area 110 during the heat storage stage of the electric water heater. When the heating module 300 is arranged in the heat storage area 110, the heating module 300 can directly or indirectly heat the phase change material 130 to store heat of the phase change material 130. The box body 100 is at least partially transparent to form an observation portion. In some embodiments, further, the portion of the water pipe 400 exposed to the observation portion is made of a transparent material for observing the water flow inside the water pipe 400. In addition, the designer can set the range of the transparent area of ​​the observation portion and the water pipe 400 according to needs. In this embodiment, the path of the box 100 along the water pipe 400 in the box 100 is made of transparent material, and the part of the water pipe 400 in the box 100 is also made of transparent material, so that the whole process of the running water flowing through the electric water heater can be observed to the greatest extent, and the heating of the running water can be more intuitively displayed to the user, thereby increasing the product premium. The above-mentioned transparent material can be made of glass, plastic or other high-stability, high-thermal conductivity polymer materials.

[0050] The specific working principle of the above structure is:

[0051] During the heat storage stage of the phase change material 130, the heating module 300 works. When the heating module 300 is arranged in the heat storage area 110, the heating module 300 directly or indirectly (indirectly, a shell or other structure may be arranged between the heating module 300 and the phase change material 130, and heat is transferred through the above shell) heats the phase change material 130; when the heating module 300 is arranged in the heat exchange area 120, the heating module 300 heats the first heat exchange medium 140, and the first heat exchange medium 140 transfers heat to the phase change material 130 (if the phase change material 130 is wrapped by a shell-like structure, the first heat exchange medium 140 transfers heat to the above shell-like structure, and then transfers heat to the phase change material 130 through the above shell-like structure), and the phase change material 130 absorbs heat to complete heat storage.

[0052] In the cold water heating stage, the phase change material 130 continuously transfers heat to the first heat exchange medium 140, and the first heat exchange medium 140 then transfers heat to the water pipe 400, and the water pipe 400 heats the live water flowing through the water pipe 400, thereby completing the live water heating.

[0053] The overall workflow is that when electricity consumption is low, the heating module 300 works, starts the heat storage phase of the phase change material 130, and completes low-price heat storage. When using hot water, when the phase change material 130 stores heat, the cold water heating phase is started to heat the running water. During long-term use, when the phase change material 130 cannot meet the temperature requirement for heating the living water during the heating process, the heating module 300 starts to work and heats the water pipe 400 through the first heat exchange medium 140. The water pipe 400 absorbs the heat of the first heat exchange medium 140 and transfers it to the living water in the water pipe 400 to complete the heating of the living water. While the heating module 300 indirectly heats the living water, the first heat exchange medium 140 will simultaneously transfer the heat to the phase change material 130, and the phase change material 130 stores the heat. In the subsequent use of hot water, whether the water heater is turned off or the heating module 300 is turned off after the phase change material 130 completes heat storage, the electric water heater still has the heat to heat a considerable volume of living water, thereby greatly facilitating the use of the electric water heater.

[0054] In addition, based on the possible insulation requirements of the box body 100, the observation portion of the box body 100 can be configured as a double-layer glass structure or other transparent structures with good insulation performance.

[0055] It should be noted that the above structure can be provided with corresponding auxiliary components as needed, for example, when it is necessary to control the water flow, a corresponding water valve can be provided at the water pipe 400 to achieve the effect of controlling the water flow. When it is necessary to improve the stability of the air pressure in the water heater, a pressure relief valve can be provided on one side of the box 100 to adjust the air pressure in the box 100. When it is necessary to control the temperature of the first heat exchange medium 140 in the box 100, a temperature sensor can be provided in conjunction with the heating module 300 to monitor the temperature of the first heat exchange medium 140 and / or the phase change material 130 in the box 100 in real time. Further, multiple temperature sensors can also be provided at different positions in the box 100 to more accurately and dynamically adjust the working timing of the heating module 300. When it is necessary to improve the insulation effect of the box 100, the box 100 can be heat-insulated on the outer surface or the inner surface of the box 100 as needed, and the box 100 can be made into a warehouse with insulation function to reduce the loss of heat in the box 100. The above structures are all conventional settings in this field, and other common structures or conventional settings are not described here.

[0056] In some embodiments, in order to accelerate the efficiency of heat transfer, the visualized phase change electric water heater preferably includes a water pump 500. The water pump 500 can be selectively arranged in the heat storage area 110 and / or the heat exchange area 120 as needed to accelerate the heat transfer between the heat exchange area 120 and the heat storage area 110.

[0057] In some embodiments, the first heat exchange medium 140 is a first liquid heat exchange medium or a solid heat exchange medium, which can achieve the required heat exchange efficiency. The first liquid heat exchange medium can be made of one or more mixed liquids such as tap water, pure water or oil as needed. The solid heat exchange medium can be a strip heat exchange body made of a solid material with a high thermal conductivity. The specific main selection method is shown in the subsequent embodiments.

[0058] In some embodiments, in order to improve the heating effect of the running water flowing in the water pipe 400, the water pipe 400 is provided with a heat extraction structure 410, thereby ensuring that the water pipe 400 achieves a better heating effect on the running water in the water pipe 400 in the smallest possible space.

[0059] The heat extraction structure 410 mainly includes the following two implementation modes:

[0060] First, fins are provided on the outer surface of the water pipe 400 to form a heat extraction structure 410 , wherein the fins can increase the contact area between the water pipe 400 and the first heat exchange medium 140 , thereby increasing the heat exchange rate of the water pipe 400 , and further increasing the heating efficiency of the water in the water pipe 400 .

[0061] Specifically, the fins on the outer surface of the water pipe 400 can be made of materials as needed, such as metal materials with high stability and high thermal conductivity, or materials with good thermal conductivity such as ceramics and glass. The fins can be mainly arranged on the outer surface of the water pipe 400 in a spiral manner, or multiple fins can be arranged, and the multiple fins are arranged parallel to each other or staggered on the outer surface of the water pipe 400. In addition, the water pipe 400 and the fins can be integrally formed, so as to avoid the problem of cumbersome installation steps between the subsequent fins and the water pipe 400.

[0062] Secondly, the water pipe 400 is spirally or S-shaped bent to form a heat extraction structure 410. The water pipe 400 is bent in a spiral or S-shape to increase the time the water passes through the water pipe 400 and the contact area between the water pipe 400 and the first heat exchange medium 140, thereby increasing the time the water in the water pipe 400 is heated by the water pipe 400, thereby increasing the temperature.

[0063] Specifically, the portion of the water pipe 400 passing through the first heat exchange medium 140 is arranged in a spiral form or an S-shaped bend to extend the time that water passes through the water pipe 400 section immersed in the first heat exchange medium 140, and to increase the amount of water simultaneously located in the water pipe 400 section immersed in the first heat exchange medium 140, thereby ensuring that more water and higher temperature heating tasks can be completed in a smaller space.

[0064] Example 2

[0065] Based on Example 1, Figure 1 and Figure 2 As shown, a heat storage pipeline 210 is provided in the heat storage area 110, a phase change material 130 is provided in the heat storage pipeline 210, the first heat exchange medium 140 is a first liquid heat exchange medium, the first liquid heat exchange medium immerses the heat storage area 110 and the heat exchange area 120, and a water pump 500 can be provided with a water pump inlet and a water pump outlet as required, and the water pump inlet and the water pump outlet are both connected to the box body 100.

[0066] Specifically, the heat storage pipeline 210 is arranged in the heat storage area 110, the phase change material 130 is arranged in the heat storage pipeline 210, and the first heat exchange medium 140 adopts the first liquid heat exchange medium. The first liquid heat exchange medium can be selected according to the demand. The filling amount of the first liquid heat exchange medium can be selected according to the demand, wherein it is best to fill the box 100 with the first liquid heat exchange medium. Such a setting can ensure that the first liquid heat exchange medium maintains good contact with other parts immersed in it, thereby ensuring the effect of heat transfer based on the first liquid heat exchange medium. The heat storage pipeline 210 is a pipeline made of a material with good thermal conductivity and durability. Since the first liquid heat exchange medium fills the box 100, the heating module 300 can be selectively arranged in the heat storage area 110 or the heat exchange area 120 in the box to ensure that at least part of the heating module 300 is in contact with the first liquid heat exchange medium. The heating module 300 can select a suitable heating module 300 according to the needs. In this embodiment, the heating module 300 adopts a heating rod.

[0067] The working principle of the above structure is:

[0068] Heat storage stage of the phase change material 130: the heating module 300 heats the first liquid heat exchange medium in the box 100, and then the heat of the first liquid heat exchange medium is transmitted to the phase change material 130 in the heat storage pipeline 210 through the heat storage pipeline 210, and the phase change material 130 stores the heat. During this period, the water pump 500 works as needed to accelerate the mixing of the first liquid heat exchange medium in the box 100 and achieve uniform temperature as soon as possible to improve the heat storage efficiency of the phase change material 130.

[0069] Cold water heating stage: open the water channel of the water pipe 400, and live water flows into the water pipe 400. In the process of the live water flowing through the water pipe 400 immersed in the first liquid heat exchange medium, the first liquid heat exchange medium transfers heat to the live water in the water pipe 400 through the water pipe 400. At the same time, the first liquid heat exchange medium will continue to absorb the heat stored in the phase change material 130 in the heat storage pipeline 210 to continuously heat the live water flowing through the water pipe 400. Similarly, during the cold water heating stage, the water pump 500 works as needed to accelerate the mixing of the first liquid heat exchange medium in the box 100 to achieve uniform temperature as soon as possible.

[0070] Similar to Example 1, when the electricity consumption is low, the heating module 300 works, starts the heat storage phase of the phase change material 130, and completes the low-price heat storage. When using hot water, when the phase change material 130 stores heat, the cold water heating phase is started to heat the running water. During long-term use, when the phase change material 130 cannot meet the temperature requirement for heating the living water during the heating process, the heating module 300 starts to work and heats the water pipe 400 through the first liquid heat exchange medium. The water pipe 400 absorbs the heat of the first liquid heat exchange medium and transfers it to the living water in the water pipe 400 to complete the heating of the living water. While the heating module 300 indirectly heats the living water, the first liquid heat exchange medium will simultaneously transfer the heat to the phase change material 130, and the phase change material 130 stores the heat. In the subsequent use of hot water, whether the water heater is turned off or the heating module 300 is turned off after the phase change material 130 completes heat storage, the electric water heater still has the heat to heat a considerable volume of living water, thereby greatly facilitating the use of the electric water heater.

[0071] This embodiment also has the following optional implementation modes:

[0072] The specific configuration of the heat storage pipeline 210 mainly includes the following two methods:

[0073] First, the heat storage pipeline 210 is bent and coiled in the box body 100, that is, it is arranged in a manner similar to a coil. The heat storage pipeline 210 adopts a coil design, which can increase the contact area between the heat storage pipeline 210 and the phase change material 130, and at the same time increase the contact area between the heat storage pipeline 210 and the first liquid heat exchange medium, thereby improving the heat exchange efficiency among the above three.

[0074] Secondly, a plurality of heat storage pipelines 210 are provided, and are arranged side by side or staggered in the box body 100. Specifically, the heat storage pipelines 210 are installed in parallel in the box body 100, or the heat storage pipelines 210 are installed in a staggered manner in the box body 100. Similar to the above scheme, the contact area between the heat storage pipeline 210 and the phase change material 130 can be increased, and the contact area between the heat storage pipeline 210 and the first liquid heat exchange medium can be increased, thereby improving the heat exchange efficiency among the above three.

[0075] In this embodiment, the water pump 500 and the heating module 300 are arranged in the box body 100 and are close to the water pipe 400. The specific reasons for the arrangement are as follows: since the first liquid heat exchange medium only participates in the circulation inside the box body 100, the first liquid heat exchange medium has only a few impurities, which will not affect the water pump 500, nor will it produce scale that affects the normal operation of the various components inside the box body 100. Therefore, arranging the water pump 500 in the box body 100 not only does not affect the normal service life of the water pump 500, but also can improve the integrity of the electric water heater. The water pump 500 and the heating module 300 are arranged near the water pipe 400. Since the temperature of the first liquid heat exchange medium near the heating module 300 is often higher than the temperature of the first heat exchange medium 140 far away from the heating module 300 during the heating process, based on the above scenario, the heating module 300 and the water pump 500 are arranged near the water pipe 400, so that the first liquid heat exchange medium with a higher temperature can be pumped to a position far away from the heating module 300, which is conducive to the efficient mixing of the first liquid heat exchange medium according to the temperature condition. Similarly to the above, since the temperature of the first liquid heat exchange medium near the heating module 300 is often higher than the temperature of the first liquid heat exchange medium far away from the heating module 300 during the heating process, the heating module 300 is arranged near the water pipe 400. When the heating module 300 is working, there will be a greater temperature difference between the first liquid heat exchange medium near the heating module 300 and the water in the water pipe 400. The greater temperature difference can bring a faster heat transfer speed, thereby ensuring the heating effect of the water in the water pipe 400.

[0076] In addition, in addition to the water pump 500, the first liquid heat exchange medium in the box body 100 can also be mixed by setting a stirring blade or other device in the box body 100, which will not be described in detail here.

[0077] Example 3

[0078] On the basis of Example 1, a partition 160 is provided between the heat storage area 110 and the heat exchange area 120 to separate the phase change material 130, and a heat exchanger is provided in the box 100. In this embodiment, the heat exchanger is a coil heat exchanger 220. Of course, the heat exchanger can also be other heat exchangers with good thermal conductivity. The coil heat exchanger 220 is arranged across the heat storage area 110 and the heat exchange area 120, and the water pump 500 is connected to the coil heat exchanger 220 to drive the liquid flow in the coil heat exchanger 220. Part of the pipeline of the coil heat exchanger 220 and the water pipe 400 pass through the first heat exchange medium 140.

[0079] Specifically, the coil heat exchanger 220 is arranged inside the box body 100 and is arranged across the heat storage area 110 and the heat exchange area 120. The water pump 500 is connected to the coil heat exchanger 220 to control the liquid (depending on the specific structure, the liquid is the first liquid heat exchange medium or the second liquid heat exchange medium described below) to flow in through the coil liquid inlet of the coil heat exchanger 220 and out through the coil liquid outlet. Part of the pipeline of the coil heat exchanger 220 and the water pipe 400 pass through the first heat exchange medium 140 to ensure that the first heat exchange medium 140 can well transfer the heat between the coil heat exchanger 220 and the water pipe 400.

[0080] Furthermore, the coil heat exchanger 220 has a coil liquid inlet and a coil liquid outlet, and the coil heat exchanger 220 is a closed circulation pipeline structure or an open circulation pipeline;

[0081] The open circulation pipeline structure is that the coil liquid inlet and the coil liquid outlet are both connected to the heat exchange area 120;

[0082] The closed circulation pipeline structure is that the coil liquid inlet is connected to the coil liquid outlet.

[0083] The main implementation methods for the open circulation pipeline structure are:

[0084] The water pump 500 in the open circulation pipeline structure is used to pump the liquid first heat exchange medium 140 to circulate in the coil heat exchanger 220 and the heat exchange area 120 .

[0085] Specific reference Figure 3 As shown, a phase change material 130 is installed in the heat storage area 110, a first liquid heat exchange medium is provided in the heat exchange area 120, a coil liquid inlet and a coil liquid outlet of the coil heat exchanger 220 are both located in the heat exchange area 120 and inserted into the immersion range of the first liquid heat exchange medium, and the remaining part of the coil heat exchanger 220 is embedded and installed in the phase change material 130 for efficient heat exchange with the phase change material 130, and a heating module 300 is arranged in the heat exchange area 120 and immersed in the first liquid heat exchange medium.

[0086] The working principle of the above structure is:

[0087] Heat storage stage of the phase change material 130: the heating module 300 heats the first liquid heat exchange medium, and then the first liquid heat exchange medium is pumped into the coil heat exchanger 220 through the coil liquid inlet of the coil heat exchanger 220 by the water pump 500. When passing through the coil heat exchanger 220, the first liquid heat exchange medium transfers heat to the phase change material 130 through the coil heat exchanger 220, and the phase change material 130 absorbs heat for storage. The first liquid heat exchange medium that completes the heat exchange task flows out from the coil liquid outlet under the action of the water pump 500, and this cycle is repeated until the heat storage of the phase change material 130 is completed.

[0088] Cold water heating stage: open the water circuit of the water pipe 400 and the water pump 500. When the living water in the water pipe 400 passes through the box 100, the water pipe 400 will absorb the heat of the first liquid heat exchange medium and transfer it to the living water to complete the heating of the living water. The water pump 500 will allow the first liquid heat exchange medium that has absorbed heat to flow through the coil heat exchanger 220, during which it will indirectly absorb the heat stored in the phase change material 130 to keep the first liquid heat exchange medium at a high temperature at all times, thereby ensuring the heating effect of the living water flowing through the water pipe 400.

[0089] Similar to Example 1, when the electricity consumption is low, the heating module 300 works, starts the heat storage phase of the phase change material 130, and completes the low-price heat storage. When using hot water, when the phase change material 130 stores heat, the cold water heating phase is started to heat the running water. During long-term use, when the phase change material 130 cannot meet the temperature requirement for heating the living water during the heating process, the heating module 300 starts to work and heats the water pipe 400 through the first liquid heat exchange medium. The water pipe 400 absorbs the heat of the first liquid heat exchange medium and transfers it to the living water in the water pipe 400 to complete the heating of the living water. While the heating module 300 indirectly heats the living water, the first liquid heat exchange medium accelerates the heat transfer to the phase change material 130 under the action of the water pump 500. The phase change material 130 stores the heat. In the subsequent use of hot water, whether the water heater is turned off or the heating module 300 is turned off after the phase change material 130 completes heat storage, the electric water heater still has the heat to heat a considerable volume of living water, thereby greatly facilitating the use of the electric water heater.

[0090] The closed-loop pipeline structure is specifically that the coil heat exchanger 220 is filled with the second heat exchange medium 150, the second heat exchange medium 150 is a second liquid heat exchange medium, and the material of the second liquid heat exchange medium can be selected to be made of the same material as the first liquid heat exchange medium. The water pump 500 is arranged at a position in the pipeline of the coil heat exchanger 220, and the water pump 500 is used to pump the second liquid heat exchange medium in the coil heat exchanger 220 to circulate.

[0091] There are two main implementation methods for closed-loop piping structures:

[0092] First, refer to Figure 4 As shown, the heating module 300 is arranged in the heat exchange area 120. Of course, the heating module 300 can also be arranged on the pipeline of the coil heat exchanger 220 to heat the second liquid heat exchange medium during the circulation process. The coiled part of the coil heat exchanger 220 is embedded in the phase change material 130 installed in the heat storage area 110 to improve the heat exchange effect between the coil heat exchanger 220 and the phase change material 130. The water pipe 400 passes through the heat exchange area 120, and the heat exchange area 120 is filled with the first liquid heat exchange medium.

[0093] The working principle of the above structure is:

[0094] When the heating module 300 is arranged in the heat exchange area 120, the phase change material 130 is in the heat storage stage: the heating module 300 heats the first liquid heat exchange medium, and the heat of the first liquid heat exchange medium is transmitted to the second liquid heat exchange medium inside the coil heat exchanger 220 through the coil heat exchanger 220 located in the heat exchange area 120, and the water pump 500 drives the second liquid heat exchange medium to circulate in the coil heat exchanger 220. During the circulation process, the second liquid heat exchange medium transmits the heat to the phase change material 130 through the coil heat exchanger 220, and the phase change material 130 absorbs the heat and stores the heat.

[0095] When the heating module 300 is arranged on the pipeline of the coil heat exchanger 220, the phase change material 130 is in the heat storage stage: the heating module 300 heats the coil heat exchanger 220, thereby indirectly heating the second liquid heat exchange medium in the coil heat exchanger 220, and the water pump 500 drives the second liquid heat exchange medium to circulate in the coil heat exchanger 220. During the circulation process, the second liquid heat exchange medium transfers heat to the phase change material 130 through the coil heat exchanger 220, and the phase change material 130 absorbs heat and stores heat.

[0096] During the cold water heating stage, when the live water in the water pipe 400 passes through the box 100, the water pipe 400 will absorb the heat of the first liquid heat exchange medium and transfer it to the live water to complete the heating of the live water. The second liquid heat exchange medium will transfer the heat to the first liquid heat exchange medium through the coil heat exchanger 220 to keep the first liquid heat exchange medium at a relatively stable temperature. During this period, the water pump 500 continues to work and pumps the second liquid heat exchange medium that is indirectly absorbed by the first liquid heat exchange medium to the coil heat exchanger 220 pipe section embedded in the phase change material 130. The heat released by the phase change material 130 is transferred to the second liquid heat exchange medium that absorbs the heat through the coil heat exchanger 220. The second liquid heat exchange medium that supplements the superheat is then acted upon by the water pump 500 and flows to the coil heat exchanger 220 pipe section located in the heat exchange area 120, and then provides heat supply for the first liquid heat exchange medium, thereby ensuring that the live water flowing through the water pipe 400 is continuously heated.

[0097] Similar to Example 1, when the electricity consumption is low, the heating module 300 works, starts the heat storage phase of the phase change material 130, and completes the low-price heat storage. When using hot water, when the phase change material 130 stores heat, the cold water heating phase is started to heat the running water. During long-term use, when the phase change material 130 cannot meet the temperature requirement for heating the living water during the heating process, the heating module 300 starts to work and heats the water pipe 400 through the first liquid heat exchange medium. The water pipe 400 absorbs the heat of the first liquid heat exchange medium and transfers it to the living water in the water pipe 400 to complete the heating of the living water. While the heating module 300 indirectly heats the living water, the electric water heater simultaneously performs the heat storage stage of the phase change material 130 to supply heat energy to the phase change material 130 for heat storage in the phase change material 130. Therefore, in the subsequent use of hot water, whether the water heater is turned off or the heating module 300 is turned off after the phase change material 130 completes heat storage, the electric water heater still has the heat to heat a considerable volume of living water, thereby greatly facilitating the use of the electric water heater.

[0098] Second, refer to Figure 5 As shown, the phase change material 130 is arranged in the heat storage area 110, and the first heat exchange medium 140 is arranged in the heat exchange area 120. The first heat exchange medium 140 is a solid heat exchange medium. In this embodiment, the solid heat exchange medium is a cube with two pipeline channels. The two pipeline channels are respectively provided for the pipeline of the coil heat exchanger 220 and the water pipe 400 to pass through, and the heat transfer between the two is completed at the solid heat exchange medium. The heating module 300 and the water pump 500 are both arranged on the pipeline of the coil heat exchanger 220. In addition, since the solid heat exchange medium is used for heat exchange, the water pipe 400 can be heat-extracted without the heat extraction structure 410.

[0099] The working principle of the above structure is:

[0100] Heat storage stage of the phase change material 130: the heating module 300 heats the coil heat exchanger 220, and the coil heat exchanger 220 transfers the heat generated by the heating module 300 to the second liquid heat exchange medium inside the coil heat exchanger 220. The second liquid heat exchange medium circulates in the coil heat exchanger 220 under the action of the water pump 500. During the circulation of the second liquid heat exchange medium, the heat in the second liquid heat exchange medium is transferred to the phase change material 130 through the coil heat exchanger 220, and the phase change material 130 absorbs the heat and stores the heat.

[0101] Cold water heating stage: the phase change material 130 transfers heat to the coil heat exchanger 220, the coil heat exchanger 220 transfers heat to the second liquid heat exchange medium, the second liquid heat exchange medium circulates in the heat storage area 110 and the heat exchange area 120 under the action of the water pump 500, and when the second liquid heat exchange medium flows through the first heat exchange medium 140, the heat is transferred to the water pipe 400 through the first heat exchange medium 140, and the water pipe 400 heats the live water flowing through the water pipe 400.

[0102] The overall workflow is that when electricity consumption is low, the heating module 300 works, starts the above-mentioned phase change material 130 heat storage stage, and completes low-electricity price heat storage. When using hot water, when the phase change material 130 stores heat, the above-mentioned cold water heating stage is started to heat the running water. During long-term use, when the phase change material 130 cannot meet the temperature requirement for heating the running water during the running water heating process, the heating module 300 works simultaneously with the water pump 500 to heat and drive the second liquid heat exchange medium to circulate, and completes the synchronous heating of the phase change material 130 and the first heat exchange medium 140 during the circulation process. The phase change material stores the heat, and the first heat exchange medium 140 transfers the heat to the running water through the water pipe 400 to complete the heating of the running water. In the subsequent use of hot water, whether the water heater is turned off or the heating module 300 is turned off after the phase change material 130 completes the heat storage, the electric water heater still has the heat to heat a considerable volume of running water, which greatly facilitates the use of the electric water heater.

[0103] 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 visual phase-change electric water heater, characterized in that: include: A box body, the box body comprising a heat storage area and a heat exchange area, the heat storage area is provided with a phase change material, and the heat exchange area is provided with a first heat exchange medium; a water pipe, the water pipe being arranged through the heat exchange area and capable of heat exchange with the first heat exchange medium; A heating module, wherein the heating module is arranged in the heat storage area and / or the heat exchange area; Among them, the heat storage area and the heat exchange area can perform heat exchange; The box body is at least partially transparent to form an observation portion.

2. A visualized phase-change electric water heater according to claim 1, characterized in that: It also includes a water pump, which is arranged in the heat storage area and / or the heat exchange area.

3. A visualized phase-change electric water heater according to claim 1, characterized in that: A heat storage pipeline is provided in the heat storage area, the phase change material is provided in the heat storage pipeline, the first heat exchange medium is a first liquid heat exchange medium, the first heat exchange medium is provided in the heat storage area, and the first heat exchange medium immerses the heat storage area and the heat exchange area.

4. A visualized phase-change electric water heater according to claim 1, characterized in that: A partition is provided between the heat storage area and the heat exchange area.

5. The visualized phase-change electric water heater according to claim 2, characterized in that: A heat exchanger is provided in the heat storage area, a portion of the heat exchanger extends to the heat exchange area, the first heat exchange medium and the phase change material both exchange heat with the heat exchanger, the water pump is connected to the heat exchanger to drive the liquid flow in the heat exchanger, and a portion of the pipelines of the heat exchanger and the water pipe both pass through the first heat exchange medium.

6. A visualized phase-change electric water heater according to claim 5, characterized in that: The heat exchanger is a coil heat exchanger, the coil heat exchanger has a coil liquid inlet and a coil liquid outlet, and the coil heat exchanger is a closed circulation pipeline structure; The closed circulation pipeline structure is that the coil liquid inlet is connected to the coil liquid outlet; The coil liquid inlet and the coil liquid outlet are both connected to the heat exchange area to form an open circulation pipeline structure, and the first heat exchange medium is a first liquid heat exchange medium.

7. A visualized phase-change electric water heater according to claim 6, characterized in that: The coil heat exchanger in the closed circulation pipeline structure is filled with a second heat exchange medium, which is a second liquid heat exchange medium. The water pump is used to pump the second liquid heat exchange medium in the coil heat exchanger to circulate.

8. The visualized phase-change electric water heater according to claim 6, characterized in that: The water pump in the open circulation pipeline structure is used to pump the first heat exchange medium of liquid to circulate in the coil heat exchanger and the heat exchange area.

9. The visualized phase-change electric water heater according to claim 6, characterized in that: The heating module is arranged in the heat exchange area, on the coil heat exchanger or in the heat storage area.

10. The visualized phase-change electric water heater according to claim 1, characterized in that: The portion of the water pipe exposed to the observation portion is made of a transparent material so as to be used for observing the water flow inside the water pipe.

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