Coupling phase change heat storage heating system

Abstract

The utility model relates to a coupling phase change heat storage heating system, which comprises a coupling heat storage box, a solar heating system, a heat pump heating system and an electric heating system, and has the technical key points that the coupling heat storage box comprises a circular box body, a box cover, and a first concentric partition, a second concentric partition and a third concentric partition which are sequentially arranged in the circular box body from inside to outside; the first heating area, the second heating area and the third heating area are used for storing water and heat, and a solar heating system, a heat pump heating system and an electric heating system are used for achieving coupling phase change heating and heat storage of the first heating area, the second heating area and the third heating area through a multi-ring-shaped design structure. And the heating water can be finally conveyed to the heating water output pipeline through the first branch, the second branch and the third branch. When rapid heating is needed, the first heating area is rapidly heated through the electric heating system, heating water is output through the first branch, and the direct heating requirement is met. Under the condition of meeting heat storage and rapid heating, the system is convenient to switch, small in switching part and long in maintenance period.

Description

Technical Field

[0001] The utility model relates to the technical field of heating systems, in particular to a coupled phase-change heat storage heating system. Background Art

[0002] At present, heat pump systems and solar heating systems are increasingly used in heating systems, but both are greatly affected by environmental factors. In order to ensure heating needs, existing technologies usually use valley electricity heat storage to assist heating, but this requires a fairly large heat storage tank and the temperature rise is too slow.

[0003] CN 211600877 U discloses a solar energy, electromagnetic energy, air source heat pump coupled phase change thermal storage heating system, which comprises an air source heat pump, a solar thermal collector, an electromagnetic heating unit, a coupled thermal storage tank, a solar thermal collection tank and a heating terminal device; the air source heat pump, the solar thermal collection tank and the heating terminal device are respectively connected to the coupled thermal storage tank through their own circulation pipelines, and the electromagnetic heating unit is connected in series on the water outlet side circulation pipeline of the air source heat pump; an electric multi-leaf baffle is arranged in the coupled thermal storage tank, and a movable guide plate is installed on the upper part of the electric multi-leaf baffle, and the guide plate is moved by a winch. Under direct heating conditions, the air source heat pump only heats the water in the direct heating area, and can quickly raise the water temperature to the required temperature, which is intended to solve the problem of slow temperature rise when direct heating is used in conjunction with a heat storage tank. However, the following problems still exist during use: the electric multi-leaf baffle divides the interior of the coupled heat storage tank into two parts: the direct heating area and the heat storage area. The electric multi-leaf baffle, guide plate, winch and other components are used to switch between operations, which requires frequent operation, is inconvenient to use, and requires a large amount of maintenance work. Utility Model Content

[0004] The purpose of the utility model is to provide a coupled phase change thermal storage heating system with a reasonable structure and reliable use to solve the above problems. While meeting the requirements of heat storage and rapid heating, the system has the advantages of convenient switching, small switching components and long maintenance cycle.

[0005] The technical solution of the utility model is:

[0006] A coupled phase-change thermal storage heating system comprises a coupled thermal storage box, a solar heating system, a heat pump heating system and an electric heating system, and its technical highlights are: the coupled thermal storage box comprises a circular box body, a box cover, a first concentric partition, a second concentric partition and a third concentric partition which are sequentially arranged in the circular box body from the inside to the outside, the first concentric partition, the second concentric partition and the third concentric partition are hollow partitions respectively, a first electric heating component connected to the electric heating system is arranged in the first concentric partition, the second concentric partition is fixed to the outside of the first concentric partition, a heat pump heating return water port connected to the second concentric partition is arranged on the box cover, a heat pump heating water inlet connected to the second concentric partition is arranged at the bottom of the box, the heat pump heating system is connected between the heat pump heating water inlet and the heat pump heating return water port, a solar heating return water port connected to the third concentric partition is arranged on the box cover, and a solar heating water inlet connected to the third concentric partition is arranged at the bottom of the box The heat pump heating system is connected between the solar heating return water inlet and the solar heating water inlet. The first concentric partition is the first heating zone, the second concentric partition and the third concentric partition form the second heating zone, and the third heating zone is formed between the third concentric partition and the outer peripheral wall of the coupling heat storage tank. The inner end of the heating water main pipe passes through the outside of the coupling heat storage tank, passes through the third heating zone and the second heating zone to enter the first heating zone. The first concentric partition and the second concentric partition are provided with a first connecting pipe connecting the first heating zone and the second heating zone, and the third concentric partition is provided with a second connecting pipe connecting the second heating zone and the third heating zone. A heating water output pipeline is provided at the bottom of the coupling heat storage tank, and a first branch connected to the first heating zone, a second branch connected to the second heating zone, and a third branch connected to the third heating zone are provided on the heating water output pipeline. Control valves are respectively provided on the first branch, the second branch and the third branch.

[0007] In the above-mentioned coupled phase-change thermal storage heating system, temperature sensors are respectively provided on the first branch, the second branch and the third branch.

[0008] In the above-mentioned coupled phase-change thermal storage heating system, an internal heating zone is provided between the inner top surface of the box cover of the coupled thermal storage box and the first heating zone, and a second electric heating component connected to the electric heating system is provided in the internal heating zone.

[0009] In the above-mentioned coupled phase-change thermal storage heating system, a heat storage and insulation layer is provided on the top of the box cover of the coupled thermal storage box.

[0010] In the above-mentioned coupled phase-change thermal storage heating system, a thermal storage and insulation layer is provided in the outer peripheral wall of the coupled thermal storage box.

[0011] The beneficial effects of the utility model are:

[0012] The first heating zone, the second heating zone and the third heating zone are used to store water and heat. The multi-ring design structure utilizes the solar heating system, the heat pump heating system and the electric heating system to realize coupled phase change heating and heat storage of the first heating zone, the second heating zone and the third heating zone. The heating water can finally be transported to the heating water output pipeline through the first branch, the second branch and the third branch. The electric heating system valley electricity heat storage assists heating, that is, it can heat at irregular intervals. When no heating is required, the peripheral heat pump heating system and the solar heating system can realize stable heating and heat storage. When rapid heating is required, the electric heating system starts heating, the first heating zone heats up rapidly, and the first branch is used to output heating water to realize direct heating requirements. While meeting the requirements of heat storage and rapid heating, the utility model is easy to switch, has small switching components and a long maintenance cycle. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the utility model.

[0014] In the figure: 1. solar heating system, 2. heat storage and insulation layer, 3. box cover, 4. solar heating return port, 5. third concentric partition, 6. second concentric partition, 7. electric heating system, 8. second electric heating component, 9. first heating zone, 10. first concentric partition, 11. heat pump heating return port, 12. first connecting pipe, 13. second heating zone, 14. third heating zone, 15. coupled heat storage tank, 16. heat pump heating system, 17. heat storage and insulation layer, 18. third branch, 19. heating water output pipeline, 20. second branch, 21. first branch, 22. heating water main, 23. second connecting pipe, 24. heat pump heating water inlet, 25. solar heating water inlet, 26. control valve, 27. temperature sensor, 28. first electric heating component. DETAILED DESCRIPTION

[0015] The utility model is described in detail according to the accompanying drawings of the specification.

[0016] like Figure 1 As shown, the coupled phase change thermal storage heating system includes a coupled thermal storage tank 15 , a solar heating system 1 , a heat pump heating system 16 and an electric heating system 7 .

[0017] The coupled heat storage box 15 includes a circular box body, a box cover 3, and a first concentric partition 10, a second concentric partition 6, and a third concentric partition 5 arranged in the circular box body from the inside to the outside. The first concentric partition 10, the second concentric partition 6, and the third concentric partition 5 are hollow partitions.

[0018] The first concentric partition 10 is provided with a first electric heating component 28 connected to the electric heating system 7, the second concentric partition 6 is fixed to the outside of the first concentric partition 10, the box cover 3 is provided with a heat pump heating return water port 11 connected to the second concentric partition 6, the box bottom is provided with a heat pump heating water inlet 24 connected to the second concentric partition 6, the heat pump heating system 16 is connected between the heat pump heating water inlet 24 and the heat pump heating return water port 11, the box cover 3 is provided with a solar heating return water port 4 connected to the third concentric partition 5, the box bottom is provided with a solar heating water inlet 25 connected to the third concentric partition, and the heat pump heating system 16 is connected between the solar heating return water port 4 and the solar heating water inlet 25.

[0019] The first concentric partition 10 contains the first heating zone 9 , the second concentric partition 6 and the third concentric partition 5 form the second heating zone 13 , and the third heating zone 14 is formed between the third concentric partition 5 and the outer peripheral wall of the coupling heat storage tank 15 . The inner end of the heating water main pipe 22 passes through the outside of the coupled heat storage tank 15, passes through the third heating zone 14 and the second heating zone 13, and enters the first heating zone 9. The first concentric partition 10 and the second concentric partition 6 are provided with a first connecting pipe 12 connecting the first heating zone 9 and the second heating zone 13. The third concentric partition 5 is provided with a second connecting pipe 23 connecting the second heating zone 13 and the third heating zone 14. A heating water output pipeline 19 is provided at the bottom of the coupled heat storage tank 15. The heating water output pipeline 19 is provided with a first branch 21 connected to the first heating zone 9, a second branch 20 connected to the second heating zone 13, and a third branch 18 connected to the third heating zone 14. The first branch 21, the second branch 20 and the third branch 18 are respectively provided with control valves 26.

[0020] In this embodiment, the first branch 21, the second branch 20 and the third branch 18 are respectively provided with temperature sensors 27. An inner heating zone is provided between the inner top surface of the box cover 3 of the coupled thermal storage box 15 and the first heating zone 9, and a second electric heating assembly 8 connected to the electric heating system 7 is provided in the inner heating zone. A heat storage and thermal insulation layer 2 is provided on the top of the box cover of the coupled thermal storage box 15. A heat storage and thermal insulation layer 17 is provided in the outer peripheral wall of the coupled thermal storage box 15.

[0021] Working process:

[0022] The heating water enters the first heating zone 9 through the heating water main pipe 22, and then enters the second heating zone 13 and the third heating zone 14 in turn through the first connecting pipe 12 and the second connecting pipe 23. Finally, it can be discharged to the heating water output pipeline 19 through the first branch 21, the second branch 20 and the third branch 18, and sent to the heating users. In this process, the solar heating system 1, the heat pump heating system 16 and the electric heating system 7 can be used for heating and heat storage. Make full use of solar energy, geothermal energy and valley electricity heat storage. When rapid heating is required, the electric heating system 7 starts heating, the first heating zone 9 heats up rapidly, and the first branch 21 is used to output heating water to meet the direct heating demand.

[0023] The above is a detailed description of the embodiments of the utility model, but the above contents are only preferred embodiments of the utility model and cannot be considered to limit the scope of implementation of the utility model. All equivalent changes and improvements made within the scope of the invention of the utility model should still fall within the scope of this patent.

Claims

1. A coupled phase change thermal storage heating system, comprising a coupled thermal storage tank, a solar heating system, a heat pump heating system and an electric heating system, characterized in that: The coupled heat storage box includes a circular box body, a box cover, a first concentric partition, a second concentric partition and a third concentric partition which are arranged in the circular box body from the inside to the outside, the first concentric partition, the second concentric partition and the third concentric partition are respectively hollow partitions, the first concentric partition is provided with a first electric heating component connected to the electric heating system, the second concentric partition is fixed to the outside of the first concentric partition, the box cover is provided with a heat pump heat return port connected to the second concentric partition, the box bottom is provided with a heat pump heat inlet connected to the second concentric partition, the heat pump heating system is connected between the heat pump heat inlet and the heat pump heat return port, the box cover is provided with a solar heat return port connected to the third concentric partition, the box bottom is provided with a solar heat inlet connected to the third concentric partition, the heat pump heating system is connected between the solar heat return port and the solar heat return port. Between the hot water inlets, the first concentric partition is the first heating zone, the second concentric partition and the third concentric partition form the second heating zone, and the third heating zone is formed between the third concentric partition and the outer peripheral wall of the coupled heat storage tank. The inner end of the heating water main pipe passes through the outside of the coupled heat storage tank, through the third heating zone and the second heating zone, and enters the first heating zone. The first concentric partition and the second concentric partition are provided with a first connecting pipe connecting the first heating zone and the second heating zone, and the third concentric partition is provided with a second connecting pipe connecting the second heating zone and the third heating zone. A heating water output pipeline is provided at the bottom of the coupled heat storage tank, and a first branch connected to the first heating zone, a second branch connected to the second heating zone, and a third branch connected to the third heating zone are provided on the heating water output pipeline. Control valves are respectively provided on the first branch, the second branch and the third branch.

2. The coupled phase change thermal storage heating system according to claim 1 is characterized in that: The first branch, the second branch and the third branch are respectively provided with temperature sensors.

3. The coupled phase change thermal storage heating system according to claim 1 is characterized in that: An internal heating zone is provided between the inner top surface of the box cover of the coupled heat storage box and the first heating zone, and a second electric heating component connected to the electric heating system is provided in the internal heating zone.

4. The coupled phase change thermal storage heating system according to claim 1 is characterized in that: A heat storage and thermal insulation layer is provided on the top of the box cover of the coupled heat storage box.

5. The coupled phase change thermal storage heating system according to claim 1 is characterized in that: A heat storage and insulation layer is provided in the outer peripheral wall of the coupled heat storage box.

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