CN211668030U

CN211668030U - Nano composite phase change material energy storage electric water heater

Info

Publication number: CN211668030U
Application number: CN202020173636.7U
Authority: CN
Inventors: 冯建华; 王勇
Original assignee: Zhejiang Bailisheng New Energy Technology Co ltd
Current assignee: Zhejiang Bailisheng New Energy Technology Co ltd
Priority date: 2020-02-17
Filing date: 2020-02-17
Publication date: 2020-10-13
Anticipated expiration: 2030-02-17

Abstract

The utility model discloses a nanometer composite phase change material energy storage electric water heater, including box shell, heat preservation layer material, box kernel, heat-retaining kernel, heat conductor, phase change material, finned heat exchanger, controller, electric heater, temperature sensor, inlet tube and outlet pipe, the inner wall of box shell is provided with the heat preservation layer material, and the heat preservation layer material cladding is outside the box kernel, be provided with the heat-retaining kernel in the box kernel, this novel, utilize high heat conduction nanometer composite phase change material and corrosion-resistant, high heat conduction metal material to compound, make a high density positive (long) square body nanometer composite phase change material heat-retaining kernel with metal heat conduction device through high pressure; the inner core is used for integrating a heat storage module with large heating area, high heat storage and release speed, large energy storage capacity and wide storage temperature range; the integration of the inner core of the box body, the electric heating module, the control module and the like can solve the defects and problems of the current similar products and technologies.

Description

Nano composite phase change material energy storage electric water heater

Technical Field

The utility model relates to a phase change energy storage technical field specifically is a nanometer composite phase change material energy storage electric water heater.

Background

At present, domestic water heaters in domestic markets can be divided into four categories, namely electric water heaters, gas water heaters, solar water heaters and air energy water heaters according to different energy sources used by the domestic water heaters.

The electric water heater can be used by electricity without being influenced by weather and natural environment, and has the defects that the water storage type electric water heater occupies large space, hot water in the water tank cannot be completely utilized, energy waste is caused, and scale is easy to generate when the water tank is used for a long time; the power of the water heater which can provide water for bathing is more than 6KW, and because people generally have bathing time in the peak period of electricity utilization, the instant heating type water heater cannot avoid peak valley and is expensive in electricity. Meanwhile, the instant electric water heater has high power and high installation condition requirements, such as requirement of independent power supply circuit, copper core wire of more than 6mm2, electricity meter of more than 30(100) A and the like.

The gas water heater has the defect of unstable water temperature in cold winter, and has the risk of carbon monoxide gas poisoning in the use process. In addition, in order to deal with global warming and reduce the emission of carbon dioxide, the aim of controlling the global warming to be within 2 ℃ provided by Paris protocol is achieved, and professors of academists of China institute of Engineers and building energy conservation experts, Jiangyi professor speak about gas problems: "research shows that even if coal is changed into natural gas, natural gas (methane) leakage exists in links such as production circulation, the GWP is equal to 25 after methane enters the atmosphere, (GWP25: the greenhouse effect generated by one carbon molecule in the natural gas is equal to 25 times of one carbon molecule contained in carbon dioxide), so that the problem of carbon emission is not solved fundamentally, and the coal gas change is beneficial to haze treatment but does not contribute to low-carbon development basically.

Compared with an electric water heater and a gas water heater, the solar energy and air energy water heater has the advantages of energy conservation, environmental protection, no carbon emission and the like, but in reality, solar energy cannot be used in continuous rainy days, air energy has low heat efficiency when the temperature is low, a water storage type solar water heater is limited to be installed in a high building, the split type solar water heater and an air energy water storage tank have large general volumes, and the indoor area value occupied by the water tank is far greater than the value of the water heater due to high room price.

The heat energy solution which is energy-saving, environment-friendly, convenient and money-saving is necessary for meeting the daily life of people, so that a new technology and a new solution are needed to integrate the prior art, make good use of advantages and avoid disadvantages, and make up for the short plates of the prior products and technologies.

Because the latent heat of the material is far greater than the sensible heat of the material, the utilization of the phase change latent heat of the material in various industries is intensively studied internationally in the 70 s of the 20 th century. At present, the research on phase change materials and phase change energy storage technology is greatly improved, more than 4300 kinds of known natural and synthetic phase change materials exist, except metal, the problems of small heat conductivity coefficient and poor heat transfer performance of common phase change materials exist, the storage speed of heat energy is influenced, and many inorganic phase change materials also have the problem of corrosivity and the like.

For technical reasons, the existing water heater adopting the phase change storage material does not appear in the market, and the domestic electric water heater adopting the phase change technology introduced by patent technology does not find the position accurately aiming at the defects of the existing water heater products and technologies, so that the market acceptance is difficult to win. Such as: the heater, the heat exchange tube, the bracket and the like are arranged in the middle of the container filled with the phase-change material, so that the high-density energy storage is difficult to realize, the filling amount is limited, the energy storage is insufficient, or the box body is enlarged, the occupied space is increased, and the attractiveness is influenced. Secondly, the electric heating pipe directly heats the phase-change material, which causes local overheating of the phase-change material and affects the service life of the phase-change material. And thirdly, the distances between the phase-change materials of all points in the box body and the heater and the heat exchange surface are different, so that the phase-change conversion efficiency of the storage and heat release of the whole phase-change material is influenced. The design of adding the phase-change energy-storage inner container in the water storage type electric water heater does not have the defects that the hot water of the water storage type electric water heater cannot be completely utilized and the like. Therefore, it is necessary to design an energy storage electric water heater with nano composite phase change material.

SUMMERY OF THE UTILITY MODEL

The purpose of the utility model is to provide a nanocomposite phase change material energy storage electric water heater to solve the problem that proposes among the above-mentioned background art.

In order to solve the technical problem, the utility model provides a following technical scheme: an electric water heater with energy storage function of nanometer composite phase change material comprises a box body shell, a heat preservation layer material, a box body inner core, a heat storage inner core, a heat conductor, a phase change material, a fin heat exchanger, a controller, an electric heater, a temperature sensor, a water inlet pipe and a water outlet pipe, wherein the inner wall of the box body shell is provided with the heat preservation layer material, the heat preservation layer material is coated outside the box body inner core, the heat storage inner core is arranged in the box body inner core, the electric heater is arranged at the connection position of the heat storage inner core and the heat preservation layer material, the input end of the electric heater is electrically connected with the output end of the controller, the heat storage inner core is formed by high-pressure compounding of the phase change material and the fin heat exchanger with a metal heat conduction device, the heat conductor is arranged at the connection position, the water inlet, and a temperature sensor is arranged in the phase change material at the water outlet, and the output end of the temperature sensor is electrically connected with the input end of the controller.

Furthermore, the box body shell and the box body inner core are regular or cuboid.

Furthermore, the number of the heat storage inner cores is not less than one, and the heat storage inner cores form a heat storage module of the water heater.

Furthermore, the phase change material is a high-density high-thermal conductivity nano composite phase change material in a cube or cuboid shape, the phase change temperature is within the range of 20-118 ℃, and the phase change material is matched with the filling shape among fins of a fin heat exchanger of the heat storage core.

Furthermore, the fin structure material of the fin heat exchanger is a high-thermal-conductivity metal material, and water flows in and out from the bottom or the top of the fin heat exchanger.

Furthermore, the water inlet pipe and the water outlet pipe respectively penetrate through the top of the box body shell and are connected with the outside.

Compared with the prior art, the utility model discloses the beneficial effect who reaches is: the nano composite phase change material energy storage electric water heater is characterized in that a powdery high-thermal conductivity nano composite phase change material is prepared from a high-density nano composite phase change material and a high-thermal conductivity support structure material under a specific working condition, the high-thermal conductivity nano composite phase change material is compounded with a corrosion-resistant high-thermal conductivity metal material, and a high-density square (long) nano composite phase change material heat storage inner core with a metal heat conduction device is prepared through high pressure; the inner core is used for integrating a heat storage module with large heating area, high heat storage and release speed, large energy storage and wide temperature storage range, and forms the inner core of the box body of the water heater together with a heat exchanger, a temperature sensor and the like; the electric heater is arranged on the surface of the inner core of the box body and is tightly attached to the heat storage inner core; the integration of the inner core of the box body, the electric heating module, the control module and the like can solve the defects and problems of the prior similar products and technologies, and the electric water heater with the high-density and high-heat-conductivity nano complex phase change material in the regular (rectangular) cubic shape and the metal heat conduction device.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention.

In the drawings:

fig. 1 is a schematic view of the overall three-dimensional structure of the present invention;

fig. 2 is an overall top cross-sectional view of the present invention;

FIG. 3 is an overall elevational cross-sectional view of the present invention;

FIG. 4 is an overall side elevation cross-sectional schematic view of the present invention;

in the figure: 1. a case body shell; 2. a heat-insulating layer material; 3. a box body inner core; 4. a heat storage inner core; 5. a heat conductor; 6. a phase change material; 7. a finned heat exchanger; 8. a controller; 9. an electric heater; 10. a temperature sensor; 11. a water inlet pipe; 12. and (5) discharging a water pipe.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: an electric water heater with energy storage of nanometer composite phase change material comprises a box body shell 1, a heat insulation layer material 2, a box body inner core 3, a heat storage inner core 4, a heat conductor 5, a phase change material 6, a fin heat exchanger 7, a controller 8, an electric heater 9, a temperature sensor 10, a water inlet pipe 11 and a water outlet pipe 12, wherein the inner wall of the box body shell 1 is provided with the heat insulation layer material 2, the heat insulation layer material 2 is coated outside the box body inner core 3, the box body shell 1 and the box body inner core 3 are a regular or cuboid, the box body inner core 3 is internally provided with the heat storage inner core 4, the electric heater 9 is arranged at the connection part of the heat storage inner core 4 and the heat insulation layer material 2, the input end of the electric heater 9 is electrically connected with the output end of the controller 8, the heat storage inner core 4 is formed by high-pressure compounding of the phase change, the heat storage module of the water heater is formed, as a high-pressure forming process is adopted, the storage capacity of the phase change material 6 in unit volume is greatly improved, the stored energy is also greatly increased, the phase change material 6 is a high-density high-thermal conductivity nano composite phase change material in a cube or cuboid shape, the phase change temperature is within the range of 20-118 ℃, the phase change material is matched with the filling shape between fins of the fin heat exchanger 7 of the heat storage core 4, the water inlet and the water outlet of the fin heat exchanger 7 are respectively and fixedly connected with the water inlet pipe 11 and the water outlet pipe 12, the fin structure material of the fin heat exchanger 7 is a high-thermal conductivity metal material, water flow enters and flows out from the bottom or the top of the fin heat exchanger 7 to facilitate heat conduction, the water inlet and the water outlet of the fin heat exchanger 7 are respectively and fixedly connected with the water inlet pipe 11 and the water outlet, a temperature sensor 10 is arranged in the phase change material 6 at the water outlet, and the output end of the temperature sensor 10 is electrically connected with the input end of the controller 8; in the utility model, when the external temperature of the high-density high-thermal conductivity nanometer composite phase-change material 6 contained in each heat storage inner core 4 is higher than the phase-change temperature, the phase-change material 6 absorbs heat and changes phase rapidly in the heat conductor 5 of the heat storage inner core 4, and the solid form is kept unchanged; on the contrary, when the temperature is lower than the phase change temperature, the phase change material 6 can also quickly release heat and change phase inside the heat conductor 5 of the heat storage inner core 4; the electric heater 9 senses the temperature of the phase change material 6 through the overheating-proof temperature sensing probe, and stops heating within a reasonable temperature range for ensuring the complete phase change of the composite phase change material 6 under the control of the controller 8 and the temperature sensor 10, so that the overheating and the incapability of the phase change material 6 are prevented, and the service life is prolonged; the controller 8 can set the automatic starting and stopping time of the electric heater 9 so as to achieve the purposes of avoiding peaks, reasonably using energy in valleys and saving money; the heating power of the electric heater 9 can be intelligently controlled by the controller 8 so as to meet the requirements of stabilizing the temperature of the water when the environmental temperature changes and the water consumption is large.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a nanometer composite phase change material energy storage electric water heater, includes box shell (1), heat preservation material (2), box kernel (3), heat-retaining kernel (4), heat conductor (5), phase change material (6), fin heat exchanger (7), controller (8), electric heater (9), temperature sensor (10), inlet tube (11) and outlet pipe (12), its characterized in that: the inner wall of the box body shell (1) is provided with a heat insulation layer material (2), the heat insulation layer material (2) is coated outside the box body core (3), the heat storage core (4) is arranged in the box body core (3), and the joints of the heat storage inner core (4) and the heat insulation layer material (2) are provided with electric heaters (9), the input end of the electric heater (9) is electrically connected with the output end of the controller (8), the heat storage inner core (4) is formed by compounding a phase change material (6) and a fin heat exchanger (7) with a metal heat conduction device at high pressure, and the joint is provided with a heat conductor (5), the water inlet and the water outlet of the finned heat exchanger (7) are respectively and fixedly connected with a water inlet pipe (11) and a water outlet pipe (12), a temperature sensor (10) is arranged in the phase change material (6) at the water outlet, and the output end of the temperature sensor (10) is electrically connected with the input end of the controller (8).

2. The nanocomposite phase change material energy storage electric water heater according to claim 1, characterized in that: the box body shell (1) and the box body core (3) are regular or cuboid.

3. The nanocomposite phase change material energy storage electric water heater according to claim 1, characterized in that: the number of the heat storage inner cores (4) is not less than one, and the heat storage inner cores form a heat storage module of the water heater.

4. The nanocomposite phase change material energy storage electric water heater according to claim 1, characterized in that: the phase-change material (6) is a high-density high-thermal conductivity nano composite phase-change material in a cube or cuboid shape, the phase-change temperature is within the range of 20-118 ℃, and the phase-change temperature is matched with the filling shape between fins of the fin heat exchanger (7) of the heat storage core (4).

5. The nanocomposite phase change material energy storage electric water heater according to claim 1, characterized in that: the fin structure material of the fin heat exchanger (7) is a high-thermal-conductivity metal material, and water flow enters and flows out from the bottom or the top of the fin heat exchanger (7).

6. The nanocomposite phase change material energy storage electric water heater according to claim 1, characterized in that: the water inlet pipe (11) and the water outlet pipe (12) penetrate through the top of the box body shell (1) respectively and are connected with the outside.