Multi-medium energy storage heat exchange type electric water heater
By using a multi-media energy storage heat exchange structure, the heat exchange medium is heated by a heater to achieve rapid heating and energy storage of external water, which solves the problem of low heating efficiency of existing electric water heaters, improves heating efficiency and hygiene.
Patent Information
- Application Number
- CN202423053878.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-10
- Publication Date
- 2025-12-05
- Estimated Expiration
- 2034-12-10
AI Technical Summary
Existing electric water heaters have low thermal conversion efficiency and heating efficiency when directly heating phase change materials.
The system employs a multi-medium energy storage and heat exchange structure. The heat exchange medium is heated by a heater, and then the heat exchange medium heats the energy storage heat exchanger and the external water. The external water exchanges heat through the energy storage heat exchanger, thus achieving heating and energy storage between multiple media and avoiding direct heating of the phase change material.
It improves heating efficiency, reduces stagnant water, avoids sediment, scale buildup and bacterial growth, and enhances hygiene.
Smart Images
Figure CN223636380U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of electric water heaters, and in particular to a multi-medium energy storage heat exchange type electric water heater. BACKGROUND
[0002] An electric water heater refers to a water heater that uses electricity as an energy source for heating. It is one of the three major water heaters that are parallel to gas water heaters and solar water heaters. After more than ten years of development, the technology of electric water heaters has been continuously improved. Innovative products such as electric wall, electric gate, 3D fast heating, and frequency conversion capacity increase have appeared in the industry. Electric water heaters have been continuously improved in terms of safety, energy saving, heating speed, and water output. The market sales have been continuously increasing over the years.
[0003] The energy storage type on the market is mostly to heat the phase change material to achieve heat exchange. However, direct heating of the phase change material can result in low heat conversion efficiency and low heating efficiency.
[0004] Therefore, the prior art has defects and needs to be improved. SUMMARY
[0005] The present application provides a multi-medium energy storage heat exchange type electric water heater to solve the problem of low heat conversion efficiency and low heating efficiency caused by direct heating of the phase change material.
[0006] In a first aspect, the present application provides a multi-medium energy storage heat exchange type electric water heater, which includes an energy storage tank, a heater, a heat exchange medium, and an energy storage heat exchanger. The heat exchange medium is arranged in the energy storage tank. The heater is arranged in the energy storage tank. The heater is arranged at the bottom of the energy storage tank and is immersed in the heat exchange medium. The energy storage heat exchanger has a continuous bending or coiled heat exchange pipe structure and is arranged in the energy storage tank. The energy storage heat exchanger is immersed in the heat exchange medium.
[0007] Optionally, the energy storage heat exchanger includes a water inlet end and a water outlet end, which are arranged at the bottom end of the energy storage tank, respectively.
[0008] Optionally, it further includes a temperature probe for detecting the temperature of the heat exchange medium. The temperature probe is arranged in the energy storage tank and is immersed in the heat exchange medium.
[0009] Optionally, the heat exchange medium is water or heat exchange oil.
[0010] Optionally, the energy storage heat exchanger includes an outer pipe, an energy storage heat exchange inner pipe, and a plurality of positioning rings. The positioning ring has a hollow gear shape. The shape and size of the inner side of the positioning ring match the shape and size of the outer diameter of the energy storage heat exchange inner pipe. The size of the outer side of the positioning ring matches the size of the inner diameter of the outer pipe. The energy storage heat exchange inner pipe is arranged in the inner side of the positioning ring. The outer side of the positioning ring is arranged in the outer pipe.
[0011] Optionally, the energy storage heat exchanger in the energy storage tank is uniformly provided with an energy storage heat exchange inner tube.
[0012] Optionally, the two ends of the energy storage heat exchange inner tube are sealed by welding.
[0013] Optionally, the outer diameter of the energy storage heat exchange inner tube is smaller than the inner diameter of the outer tube.
[0014] Optionally, the temperature probe is a temperature sensor.
[0015] The above technical solutions provided by the embodiments of the present application have the following advantages compared with the prior art:
[0016] The heater heats the heat exchange medium, the heat exchange medium heats the energy storage heat exchanger, and the external water exchanges heat with the heat exchange medium while exchanging heat with the energy storage heat exchanger, so that the external water can be quickly heated. When the temperature of the heat exchange medium is high, the temperature of the external water is higher than the energy storage temperature of the energy storage heat exchanger, and the external water can also heat and store energy in the energy storage heat exchanger. The heat exchange medium, the energy storage heat exchanger and the external water serve as multiple heat exchange media, the heating environment has the advantage of diversification, and the product does not need to be directly heated by the phase change material, which is conducive to improving the heating efficiency. At the same time, the whole process is a heat exchange operation, there is no dead water storage, it is not easy to deposit silt, scale and other substances, and it is not easy to breed bacteria, which is conducive to improving the sanitary level. BRIEF DESCRIPTION OF DRAWINGS
[0017] The accompanying drawings, which are incorporated into and form part of the specification, illustrate embodiments consistent with the present application and, together with the specification, serve to explain the principles of the application.
[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the accompanying drawings needed to be used in the embodiments or the prior art description will be briefly introduced. Obviously, for those skilled in the art, other drawings can also be obtained without creative labor based on these drawings.
[0019] One or more embodiments are exemplarily illustrated by the pictures in the corresponding drawings, which do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, unless otherwise specified. The drawings in the drawings do not constitute a proportional limitation.
[0020] Figure 1 A structural diagram of a multi-medium energy storage heat exchange type electric water heater is provided for the embodiments of the present application.
[0021] Figure 2 A sectional view of the energy storage heat exchanger and the external water is provided for the embodiments of the present application.
[0022] Figure 3 is a close-up view of Figure 2
[0023] Figure 4 is a perspective view of a positioning ring provided in an embodiment of the present application.
[0024] Figures 5-6 is a schematic diagram of energy storage and release of a multi-medium energy storage heat exchange type electric water heater according to an embodiment of the present application.
[0025] BRIEF DESCRIPTION OF DRAWINGS
[0026] 1, energy storage tank; 2, heater; 3, heat exchange medium; 4, energy storage heat exchanger; 5, temperature probe; 6, outer tube; 7, energy storage heat exchange inner tube; 8, positioning ring; 9, phase change energy storage material; 10, water inlet end; 11, water outlet end. DETAILED DESCRIPTION
[0027] In order to make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application.
[0028] The following disclosure provides many different embodiments, or examples, for implementing different structures of the present application. For the purpose of simplicity, the components and arrangements of the particular examples are shown in the following description. These are, of course, merely examples and are not intended to limit the present application. Moreover, the present application can be practiced with different examples than those described. Further, the disclosure herein can be repeated with variations and / or combinations of the features set forth herein. Such repetitions of the features set forth herein are not to be construed as meaning that the various embodiments and / or features discussed are related.
[0029] For ease of description, spatial relative terms can be used herein to describe the relative position relationship or movement condition of one element or feature with respect to another element or feature as shown in the drawings, such as "inner", "outer", "inboard", "outboard", "under", "below", "on", "above", "front", "back", etc. Such spatial relative terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the drawings. For example, if the device in the drawings is turned over or the posture is changed or the movement state is changed, the directional indications will also change accordingly, for example: the element described as "under" or "below" another element or feature will be oriented as "above" or "above" another element or feature. Therefore, the example term "below" can include both the upper and lower positions. The device can be additionally oriented (rotated by 90 degrees or in other directions) and the spatial relative relationship descriptors used herein are interpreted accordingly.
[0030] In order to solve the technical problems in the prior art, the application provides a multi-medium energy storage heat exchange type electric water heater, which can realize heating of the heat exchange medium by the heater, heating and energy storage of the energy storage heat exchanger by the heat exchange medium, and heat exchange of the external water with the heat exchange medium while the external water is heat exchanged by the energy storage heat exchanger, so that the external water can be quickly heated, and when the temperature of the heat exchange medium is relatively high, the temperature of the external water is higher than the energy storage temperature of the energy storage heat exchanger, and the external water can also heat and store energy for the energy storage heat exchanger; the heat exchange medium, the energy storage heat exchanger and the external water serve as multiple heat exchange media, the heating environment has the advantages of diversification, and the product does not need to be directly heated by the phase change material, which is beneficial to improving the heating efficiency, and the whole process is heat exchange operation, there is no dead water storage, and it is not easy to deposit silt, scale and the like, and bacteria breeding problems are not easy to occur, which is beneficial to improving the sanitary degree.
[0031] Figure 1The multi-medium energy storage heat exchange type electric water heater provided by the embodiment of the application comprises an energy storage tank 1, a heater 2, a heat exchange medium 3 and an energy storage heat exchanger 4. The heat exchange medium 3 is arranged in the energy storage tank 1. The heater 2 is arranged in the energy storage tank 1. The heater 2 is arranged at the bottom of the energy storage tank 1 and is immersed in the heat exchange medium 3. The energy storage heat exchanger 4 is in the form of a continuously bent or coiled heat exchange pipe and is arranged in the energy storage tank 1. The energy storage heat exchanger 4 is immersed in the heat exchange medium 3. The heater 2 is arranged at the bottom of the energy storage tank 1. The heating of the heat exchange medium 3 can be quickly diffused to the surrounding area, which is beneficial to improving the heating efficiency. Meanwhile, the heat exchange medium 3 is immersed in the heater 2, which is beneficial to reducing the heat loss. The heat exchange medium 3 is immersed in the energy storage heat exchanger 4, which is beneficial to improving the heat exchange efficiency. The energy storage heat exchanger 4 is in the form of a continuously bent structure, which increases the length arranged in the heat exchange medium 3 and is beneficial to better achieving heat exchange. Preferably, the heat exchange medium 3 is water, which has a high specific heat capacity, good heat conductivity and a low acquisition cost. The heat exchange medium 3 can also be heat exchange oil. The energy storage heat exchanger 4 is in the form of a snake.
[0032] Please continue to refer to Figure 1 The temperature probe 5, which is a temperature sensor, is arranged in the energy storage tank 1 and is used to detect the temperature of the heat exchange medium 3. The arrangement of the temperature probe 5 is beneficial to helping the user to know the temperature in the energy storage tank 1 in real time, which is beneficial to helping the user to stop or start the heating operation in real time. The temperature probe 5 can also control the on-off state of the heater 2 according to the preset temperature. The temperature probe 5 is immersed in the heat exchange medium 3, which is beneficial to improving the accuracy of temperature measurement.
[0033] Please refer to Figures 2-4, the energy storage heat exchanger 4 comprises an outer tube 6, an energy storage heat exchange inner tube 7 and a plurality of positioning rings 8, the positioning ring 8 is in the shape of a hollow gear, the shape and size of the inner side match the shape and size of the outer diameter of the energy storage heat exchange inner tube 7, and the size of the outer side matches the size of the inner diameter of the outer tube 6, the energy storage heat exchange inner tube 7 is sleeved on the inner side of the positioning ring 8, and the outer side of the positioning ring 8 is sleeved in the outer tube 6, wherein the energy storage heat exchange inner tube 7 is provided with a phase change energy storage material 9. It can be understood that one end of the outer tube 6 is the water inlet end 10 for the input of external water, and the other end is the water outlet end 11 for the output of the external water after heat exchange, and the water inlet end 10 and the water outlet end 11 are arranged at the bottom end of the energy storage tank 1 respectively, so that the external water of the water inlet end 10 enters slowly, which is beneficial to increase the heat exchange time and improve the heat exchange effect; the water of the water outlet end 11 flows out more easily under the assistance of gravity. The positioning ring 8 is arranged to relatively fix the two ends of the energy storage heat exchange inner tube 7 and the outer tube 6, so that the positioning ring 8, the outer tube 6 and the energy storage heat exchange inner tube 7 are not easy to slide, and the structure can be further reinforced by welding. At the same time, the gap structure on the outer side provides convenience for the external water to pass between the outer tube 6 and the energy storage heat exchange inner tube 7, and the relatively uniform gap structure also facilitates the external water to pass from multiple positions, avoiding the situation that the water cannot enter due to the blockage of a certain structure.
[0034] Preferably, the two ends of the energy storage heat exchange inner tube 7 are sealed by welding, which has the advantages of good sealing effect and difficulty in leakage of the contents; the energy storage heat exchange inner tube 7 is evenly arranged in the energy storage heat exchanger 4 in the energy storage tank 1, that is, the phase change energy storage material 9 can completely receive and store the heat from the heat exchange medium 3, avoiding the situation that the heat exchange effect is affected due to the absence of the structure in a certain position.
[0035] Please refer to Figures 5-6 The energy storage process of the multi-medium energy storage heat exchange type electric water heater is that the heater 2 works to heat the heat exchange medium 3, the heat exchange medium 3 heats the external water in the outer tube 6 and the external water in the outer tube 6, and the external water in turn heats the energy storage tank material 9 of the energy storage heat exchange inner tube 7; the energy release process is that the external water enters the mixed water in the outer tube 6 from the water inlet end 10, and is heated by the heat exchange medium 3 and the phase change energy storage material of the energy storage heat exchange inner tube 7, so that the warm water after multi-stage heat exchange flows out from the water outlet end 11.
[0036] Please continue to refer to Figure 3The outer diameter of the energy storage heat exchange inner tube 7 is smaller than the inner diameter of the outer tube 6, so that the energy storage heat exchange inner tube 7 cannot block the inside of the outer tube 6 and block the water from the outside. Specifically, the outer diameter of the energy storage heat exchange inner tube 7 is 65%-85% of the inner diameter of the outer tube 6, which has the advantages of better heat exchange effect, and the ratio is not too large to affect the water in and out, and not too small to have poor heat exchange effect.
[0037] In the above embodiments, the description of each embodiment has its own focus, and the parts not described in detail in a certain embodiment can be referred to the related description of other embodiments.
[0038] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.
[0039] In addition, the terms "first", "second" are only for descriptive purpose, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.
[0040] In the present application, unless otherwise specifically defined and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, it can be connected, or detachable, or integrated; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, or the communication or interaction between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0041] In the present application, unless specifically defined otherwise, the expression "on" or "under" of a first feature with respect to a second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the expression "on", "above" and "over" of a first feature with respect to a second feature includes that the first feature is directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The expression "under", "below" and "underneath" of a first feature with respect to a second feature includes that the first feature is directly below and obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.
[0042] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" and the like means that the specific feature, structure, material or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms should not be understood as necessarily referring to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, a person skilled in the art can combine and combine different embodiments or examples described in the present specification.
[0043] Obviously, those skilled in the art can make various modifications and variations to the present application without departing from the spirit and scope of the present application. Thus, these modifications and variations of the present application are intended to be included within the scope of the present application, and the claims and their equivalents. Therefore, the present application is intended to include these modifications and variations.
[0044] The above is a specific embodiment of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can easily think of various equivalent modifications or replacements within the technical scope disclosed by the present application, and these modifications or replacements should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.
Claims
1. A multi-media energy storage heat exchange electric water heater, characterized in that: The energy storage tank, the heater, the heat exchange medium and the energy storage heat exchanger, the heat exchange medium is arranged in the energy storage tank, the heater is arranged in the energy storage tank, the heater is arranged at the bottom of the energy storage tank and is immersed in the heat exchange medium, the energy storage heat exchanger is in the form of a continuous bending or coiled heat exchange pipe structure and is arranged in the energy storage tank, and the energy storage heat exchanger is immersed in the heat exchange medium.
2. The multi-medium regenerative heat exchanger electric water heater according to claim 1, characterized in that: The energy storage heat exchanger comprises a water inlet end and a water outlet end, and the water inlet end and the water outlet end are arranged at the bottom end of the energy storage tank.
3. The multi-medium regenerative heat exchanger electric water heater according to claim 1, characterized in that: A temperature probe for detecting the temperature of the heat exchange medium is further arranged in the energy storage tank and immersed in the heat exchange medium.
4. The multi-medium regenerative heat exchanger electric water heater according to claim 1, characterized in that: The heat exchange medium is water or heat exchange oil.
5. The multi-medium regenerative heat exchanger electric water heater according to claim 1, characterized in that: The energy storage heat exchanger comprises an outer pipe, an energy storage heat exchange inner pipe and a plurality of positioning rings, the positioning rings are in the form of hollow gears, the shape and size of the inner side of the positioning rings are matched with the shape and size of the outer diameter of the energy storage heat exchange inner pipe, the size of the outer side of the positioning rings is matched with the size of the inner diameter of the outer pipe, the energy storage heat exchange inner pipe is arranged in the energy storage heat exchange inner pipe, the outer side of the positioning ring is sleeved in the outer pipe.
6. The multi-medium regenerative heat exchanger electric water heater according to claim 5, characterized in that: The energy storage heat exchange inner pipes are uniformly arranged in the energy storage heat exchanger in the energy storage tank.
7. The multi-medium regenerative heat exchanger electric water heater according to claim 5, characterized in that: The two ends of the energy storage heat exchange inner pipes are sealed by welding.
8. The multi-medium regenerative heat exchanger electric water heater according to claim 5, characterized in that: The outer diameter of the energy storage heat exchange inner pipe is smaller than the inner diameter of the outer pipe.
9. The multi-medium regenerative heat exchanger electric water heater according to claim 3, characterized in that: The temperature probe is a temperature sensor.