Electric heating water heating device of solar heat exchange unit

Abstract

The utility model relates to the technical field of solar heat exchange units, in particular to an electric heating water heating device of a solar heat exchange unit, which comprises a solar heat collector, an absorption heat exchange unit and an electric heating vacuum phase change furnace. The absorption type heat exchange unit is connected with the electric heating vacuum phase change furnace through a pipeline, and the electric heating vacuum phase change furnace is connected to a hot water outlet pipeline through a hot water-electric heating vacuum phase change furnace outlet pipeline. When the electric heating water heating device of the solar heat exchange unit is used, all-day photoelectric combination is achieved, fossil fuel is not used, and zero emission of carbon is achieved through a heat supply system combining the solar heat collector, the absorption heat exchange unit and the electric heating vacuum phase change furnace.

Description

Technical Field

[0001] The utility model relates to the technical field of solar heat exchange units, in particular to an electric hot water device of a solar heat exchange unit. Background Art

[0002] In the energy field, new energy is gradually replacing fossil resources, because the carbon emission coefficient of fossil energy is much higher than that of non-fossil energy. Solar energy, as an inexhaustible and renewable energy source, is being used on a large scale.

[0003] However, solar energy is also limited by geographical and weather conditions, and its output energy is not stable enough, requiring other equipment to work in coordination. In the market, solar thermal utilization, lithium bromide absorption units, and electric heating vacuum phase change furnaces have been widely used in my country, but the combination of the three is still relatively rare. The combined application of the three can overcome the shortcomings of solar energy being affected by weather conditions, recover the heat input by solar energy to a greater extent, reduce the cost of pipelines and water pumps, achieve stable heating, and achieve energy conservation, carbon reduction, cost reduction, and efficiency improvement. Utility Model Content

[0004] The purpose of the utility model is to solve the above-mentioned shortcomings in the prior art and to propose an electric hot water device with a solar heat exchange unit.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: design a solar heat exchange unit electric hot water device, including a solar collector, an absorption heat exchange unit, and an electric heating vacuum phase change furnace. The solar collector is connected to the absorption heat exchange unit through a pipeline, the absorption heat exchange unit is connected to the electric heating vacuum phase change furnace through a pipeline, and the electric heating vacuum phase change furnace is connected to the hot water outlet pipeline through a hot water-electric heating vacuum phase change furnace outlet pipeline.

[0006] Preferably, the absorption heat exchange unit comprises a hot water generator, a condenser, an absorber, and an evaporator;

[0007] The hot water generator is connected to a solar water heating-absorption heat exchange unit generator inlet pipeline, and the other end of the solar water heating-absorption heat exchange unit generator inlet pipeline is connected to a first hot water three-way valve, one end of the first hot water three-way valve is connected to a solar collector through the solar water heating inlet pipeline, and the hot water generator is also connected to a solar water heating-absorption heat exchange unit generator outlet pipeline, the other end of the solar water heating-absorption heat exchange unit generator outlet pipeline is connected to a water-to-water heat exchanger, and the water-to-water heat exchanger is connected to the evaporator through the solar water heating-absorption heat exchange unit evaporator inlet pipeline, and the evaporator is provided with a solar water heating return pipeline, and the solar water heating return pipeline is connected to the solar collector;

[0008] The absorber is connected with a hot water-absorption heat exchanger absorber inlet pipeline, the other end of the hot water-absorption heat exchanger absorber inlet pipeline is connected with a second hot water three-way valve, one end of the second hot water three-way valve is connected with the hot water inlet pipeline, and the absorber is also connected with a conduit, the conduit is connected to the condenser, and the condenser is also provided with a hot water-electrically heated vacuum phase change furnace inlet pipeline, and the other end of the hot water-electrically heated vacuum phase change furnace inlet pipeline is installed on the electrically heated vacuum phase change furnace.

[0009] Preferably, a second hot water pump is installed on the solar hot water return pipeline, and a first hot water pump is connected to the hot water inlet pipeline.

[0010] Preferably, a hot water-water-water heat exchanger inlet pipeline is connected to the second hot water three-way valve, the other end of the hot water-water-water heat exchanger inlet pipeline is connected to the water-water heat exchanger, and a hot water-water-water heat exchanger outlet pipeline is also installed on the water-water heat exchanger, and the other end of the hot water-water-water heat exchanger outlet pipeline is connected to the hot water outlet pipeline.

[0011] Preferably, a hot water-electrically heated vacuum phase change furnace outlet pipeline is installed on the electrically heated vacuum phase change furnace, and the other end of the hot water-electrically heated vacuum phase change furnace outlet pipeline is connected to the hot water outlet pipeline.

[0012] Preferably, a solar hot water bypass pipeline is installed on the first hot water three-way valve, and the other end of the solar hot water bypass pipeline is installed on the solar hot water-absorption heat exchange unit generator outlet pipeline.

[0013] The design scheme proposed by the utility model has the following beneficial effects during application:

[0014] 1. The solar heat exchanger electric hot water device realizes all-day photovoltaic combination, does not use fossil fuels, and achieves zero carbon emissions through a heating system that combines solar collectors, absorption heat exchangers, and electric heating vacuum phase change furnaces.

[0015] 2. The solar heat exchanger electric hot water device can reduce the solar heat return water temperature to below the hot water inlet temperature by using the absorption heat exchanger, making full use of the heat of the solar collector and saving investment and operation costs.

[0016] 3. The solar heat exchange unit electric hot water device uses light when there is light and electricity when there is no light, and the pipe heat and electric heating complement each other to ensure stable heating. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the utility model.

[0018] In the figure: 1. Solar collector; 2. Absorption heat exchanger; 3. Electric heating vacuum phase change furnace; 4. First hot water three-way valve; 5. Second hot water three-way valve; 6. First hot water pump; 7. Second hot water pump; 8. Water-to-water heat exchanger; 9. Solar hot water inlet pipeline; 10. Solar hot water-absorption heat exchanger generator inlet pipeline; 11. Solar hot water bypass pipeline; 12. Solar hot water-absorption heat exchanger generator outlet pipeline; 13. Solar hot water water-to-water heat exchanger inlet pipeline; 14. Solar hot water -absorption heat exchanger evaporator inlet pipeline; 15. solar hot water return pipeline; 16. hot water inlet pipeline; 17. hot water-absorption heat exchanger absorber inlet pipeline; 18. hot water-water-water heat exchanger inlet pipeline; 19. hot water-electric heating vacuum phase change furnace inlet pipeline; 20. hot water-electric heating vacuum phase change furnace outlet pipeline; 21. hot water-water-water heat exchanger outlet pipeline; 22. hot water outlet pipeline; 23. hot water generator; 24. absorber; 25. condenser; 26. evaporator; 27. conduit. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0020] Reference Figure 1 A solar heat exchange unit electric hot water device includes a solar collector 1, an absorption heat exchange unit 2, and an electric heating vacuum phase change furnace 3. The solar collector 1 is connected to the absorption heat exchange unit 2 through a pipeline, and the absorption heat exchange unit 2 is connected to the electric heating vacuum phase change furnace 3 through a pipeline, and the electric heating vacuum phase change furnace 3 is connected to the hot water outlet pipeline 22 through a hot water-electric heating vacuum phase change furnace outlet pipeline 20.

[0021] The absorption heat exchange unit 2 includes a hot water generator 23, a condenser 25, an absorber 24, and an evaporator 26;

[0022] The hot water generator 23 is connected to a solar water heating-absorption heat exchange unit generator inlet pipeline 10, and the other end of the solar water heating-absorption heat exchange unit generator inlet pipeline 10 is connected to a first hot water three-way valve 4, one end of the first hot water three-way valve 4 is connected to the solar collector 1 through a solar water heating inlet pipeline 9, and a solar water heating bypass pipeline 11 is installed at the other end of the first hot water three-way valve 4, and the other end of the solar water heating bypass pipeline 11 is installed on the solar water heating-absorption heat exchange unit generator outlet pipeline 12, the solar One end of the solar hot water-absorption heat exchanger generator outlet pipeline 12 is installed on the hot water generator 23, and the other end of the solar hot water-absorption heat exchanger generator outlet pipeline 12 is connected to the water-to-water heat exchanger 8, and the water-to-water heat exchanger 8 is connected to the evaporator 26 through the solar hot water-absorption heat exchanger evaporator inlet pipeline 14, and the evaporator 26 is provided with a solar hot water return pipeline 15, the solar hot water return pipeline 15 is connected to the solar collector 1, and a second hot water pump 7 is installed on the solar hot water return pipeline 15;

[0023] The absorber 24 is connected to a hot water-absorption heat exchanger absorber inlet pipeline 17, the other end of which is connected to a second hot water three-way valve 5, one end of which is connected to a hot water inlet pipeline 16, and the hot water inlet pipeline 16 is connected to a first hot water pump 6, the other end of which is connected to a hot water-water heat exchanger inlet pipeline 18, and the other end of which is connected to a hot water-water heat exchanger inlet pipeline 18. On the water-to-water heat exchanger 8, a hot water-to-water heat exchanger outlet pipeline 21 is also installed on the water-to-water heat exchanger 8, and the other end of the hot water-to-water heat exchanger outlet pipeline 21 is connected to the hot water outlet pipeline 22, and a conduit 27 is also connected to the absorber 24, and the conduit 27 is connected to the condenser 25, and a hot water-to-electrically heated vacuum phase change furnace inlet pipeline 19 is also provided on the condenser 25, and the other end of the hot water-to-electrically heated vacuum phase change furnace inlet pipeline 19 is installed on the electrically heated vacuum phase change furnace 3.

[0024] A hot water-electric heating vacuum phase change furnace outlet pipeline 20 is installed on the electric heating vacuum phase change furnace 3 , and the other end of the hot water-electric heating vacuum phase change furnace outlet pipeline 20 is connected to the hot water outlet pipeline 22 .

[0025] In actual use, the absorption heat exchanger unit 2 is a lithium bromide absorption heat exchanger unit. The utility model combines a solar collector 1, an absorption heat exchanger unit 2, and an electric heating vacuum phase change furnace 3 to form a heating system, which is composed of a solar collector 1, an absorption heat exchanger unit 2, a water-to-water heat exchanger 8, an electric heating vacuum phase change furnace 3, a water pump, a pipeline, and a three-way valve; the solar collector 1 is connected to the second hot water pump 7 through a pipeline, a valve, a hot water generator 23, a water-to-water heat exchanger 8, and an evaporator 26 to form a circulation loop; the hot water is divided into two branches after passing through the first hot water pump 6 and the second hot water three-way valve 5. In the first branch, the hot water passes through the second hot water three-way valve 5, the absorber 24, the condenser 25, and the electric heating vacuum phase change furnace 3, so that the hot water is converged to the hot water outlet pipeline 22, and in the second branch, the hot water passes through the second hot water three-way valve 5 and the water-to-water heat exchanger 8, so that the hot water is converged in the hot water outlet pipeline 22.

[0026] Specifically, when there is sunlight during the day, the utility model mainly uses solar energy for heat, and if the heat is insufficient, the vacuum phase change furnace is supplemented by electric heating;

[0027] That is, the solar collector 1 absorbs light heat and heats the solar hot water. The high-temperature solar hot water enters the hot water generator 23 of the absorption heat exchanger 2 through the solar hot water inlet pipeline 9, the first hot water three-way valve 4, and the solar hot water-absorption heat exchanger generator inlet pipeline 10. As the driving heat source of the absorption heat exchanger 2, a part of the heat is released to the hot water generator 23, and after becoming medium-temperature hot water, it enters through the solar hot water-absorption heat exchanger generator outlet pipeline 12 and the solar hot water water heat exchanger inlet pipeline 13. It reaches the water-to-water heat exchanger 8, exchanges heat with the hot water in the second branch and becomes low-temperature hot water, and then enters the evaporator 26 of the absorption heat exchanger through the solar water heating-absorption heat exchanger evaporator inlet pipeline 14, and is further cooled after being absorbed by the evaporator 26, and then returns to the solar collector 1 through the solar water heating return pipeline 15 and under the action of the second hot water pump 7, completing a cycle of solar water heating; the temperature is reduced from high temperature to low temperature, and the heat is fully released to the absorption heat exchanger 2 and the water-to-water heat exchanger 8.

[0028] In the first branch, hot water enters the absorber 24 of the absorption heat exchanger 2 through the second hot water three-way valve 5 and the hot water-absorption heat exchanger absorber inlet pipeline 17. Since the heat exchange in the absorber 24 is an exothermic process, the hot water absorbs heat in the absorber 24 and the temperature rises. Then, the hot water enters the condenser 25 of the absorption heat exchanger 2. Due to the condensation exothermic process of the condenser 25, the hot water is further heated and the temperature rises. Then, the hot water enters the electric heating vacuum phase change furnace 3 through the hot water-electric heating vacuum phase change furnace inlet pipeline 19, and then passes through the hot water-electric heating vacuum phase change furnace outlet pipeline 20 and merges into the hot water outlet pipeline 22. In the second branch, the hot water passes through the second hot water three-way valve 5 and the water-to-water heat exchanger 8, and the temperature rises after the solar medium-temperature water heat exchange in the water-to-water heat exchanger 8, and then merges with the hot water outlet pipeline 22 through the hot water-to-water heat exchanger outlet pipeline 21.

[0029] During use, the opening of the second hot water three-way valve 5 and the first hot water three-way valve 4 is controlled according to the temperature of the hot water outlet water heat exchanger 8; the load of the electric heating vacuum phase change furnace 3 is controlled according to the temperature of the hot water outlet phase change furnace. When the temperature is lower than the set temperature, the load increases, otherwise it decreases or stops.

[0030] When there is no light at night, the utility model uses an electric heating vacuum phase change furnace to heat and provide heat;

[0031] Since there is no sunlight at night, all the hot water enters the absorber 24 and condenser 25 of the absorption heat exchanger unit 2 through the second hot water three-way valve 5 and the hot water-absorption heat exchanger absorber inlet pipeline 17. Then the hot water enters the electric heating vacuum phase change furnace 3 through the hot water-electric heating vacuum phase change furnace inlet pipeline 19. After being heated by the electric heating vacuum phase change furnace 3, the hot water will be merged into the hot water outlet pipeline 22 through the hot water-electric heating vacuum phase change furnace outlet pipeline 20 to complete the hot water heating.

[0032] In summary, the utility model can utilize solar energy to collect heat during the day, electrically heat the vacuum phase change furnace 3 for auxiliary heating, and fully utilize valley electricity for heating at night, so as to realize the use of light when there is light and the use of electricity when there is no light, improve the energy utilization rate, ensure the stability of heating, realize the combination of photovoltaic power throughout the day, do not use fossil fuels, and achieve zero carbon emissions.

[0033] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A solar heat exchange unit electric water heating device, characterized in that: The invention comprises a solar energy collector (1), an absorption heat exchange unit (2), and an electric heating vacuum phase change furnace (3). The solar energy collector (1) is connected to the absorption heat exchange unit (2) via a pipeline, the absorption heat exchange unit (2) is connected to the electric heating vacuum phase change furnace (3) via a pipeline, and the electric heating vacuum phase change furnace (3) is connected to a hot water outlet pipeline (22) via a hot water-electric heating vacuum phase change furnace outlet pipeline (20).

2. The solar heat exchange unit electric water heating device according to claim 1, characterized in that: The absorption heat exchange unit (2) comprises a hot water generator (23), a condenser (25), an absorber (24), and an evaporator (26); The hot water generator (23) is connected to a solar hot water-absorption heat exchanger generator inlet pipeline (10), and the other end of the solar hot water-absorption heat exchanger generator inlet pipeline (10) is connected to a first hot water three-way valve (4), one end of the first hot water three-way valve (4) is connected to a solar thermal collector (1) via a solar hot water inlet pipeline (9), and the hot water generator (23) is also connected to a solar hot water-absorption heat exchanger generator outlet pipeline (12), the other end of the solar hot water-absorption heat exchanger generator outlet pipeline (12) is connected to a water-to-water heat exchanger (8), and the water-to-water heat exchanger (8) is connected to an evaporator (26) via a solar hot water-absorption heat exchanger evaporator inlet pipeline (14), and the evaporator (26) is provided with a solar hot water return pipeline (15), and the solar hot water return pipeline (15) is connected to the solar thermal collector (1); The absorber (24) is connected to a hot water-absorption heat exchange unit absorber inlet pipeline (17), the other end of which is connected to a second hot water three-way valve (5), one end of which is connected to a hot water inlet pipeline (16), and the absorber (24) is also connected to a conduit (27), which is connected to a condenser (25), and the condenser (25) is also provided with a hot water-electrically heated vacuum phase change furnace inlet pipeline (19), the other end of which is installed on the electrically heated vacuum phase change furnace (3).

3. The solar heat exchange unit electric water heating device according to claim 2, characterized in that: A second hot water pump (7) is installed on the solar hot water return pipeline (15), and a first hot water pump (6) is connected to the hot water inlet pipeline (16).

4. The solar heat exchange unit electric water heating device according to claim 2, characterized in that: A hot water-water heat exchanger inlet pipeline (18) is connected to the second hot water three-way valve (5), the other end of the hot water-water heat exchanger inlet pipeline (18) is connected to the water-water heat exchanger (8), and a hot water-water heat exchanger outlet pipeline (21) is also installed on the water-water heat exchanger (8), and the other end of the hot water-water heat exchanger outlet pipeline (21) is connected to the hot water outlet pipeline (22).

5. The solar heat exchange unit electric water heating device according to claim 4, characterized in that: A hot water-electric heating vacuum phase change furnace outlet pipeline (20) is installed on the electric heating vacuum phase change furnace (3), and the other end of the hot water-electric heating vacuum phase change furnace outlet pipeline (20) is connected to the hot water outlet pipeline (22).

6. The solar heat exchange unit electric water heating device according to claim 2, characterized in that: A solar hot water bypass pipeline (11) is installed on the first hot water three-way valve (4), and the other end of the solar hot water bypass pipeline (11) is installed on the solar hot water-absorption heat exchange unit generator outlet pipeline (12).

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