Electric vacuum hot water boiler and phase change heat storage device combined heating system

Abstract

The invention discloses an electric vacuum hot water boiler and phase change heat storage device combined heat supply system which comprises an electric vacuum hot water boiler, a phase change heat storage device, a water outlet device and a water return device. A first heat storage pipeline is connected between the first water supply pipeline and the second water return pipeline; a second heat storage pipeline is connected between the second water supply pipeline and the first water return pipeline; according to the combined heat supply system of the electric vacuum hot water boiler and the phase change heat storage device, the first heat storage pipeline and the second heat storage pipeline are additionally arranged between the two independent systems, so that the two systems are organically combined, the electric vacuum hot water boiler and the phase change heat storage device serve as main heat sources, the electric vacuum hot water boiler and the phase change heat storage device alternately operate, the cost is reduced, and the heat supply efficiency is improved. The purposes of stabilizing the system and saving the cost are achieved; meanwhile, when the phase change heat storage device operates, the electric vacuum hot water boiler serves as a standby heat source, so that the heat supply efficiency and safe and stable operation of the phase change heat storage device are guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of boiler heating, and in particular to a heating system combining an electric vacuum hot water boiler and a phase change heat storage device. Background Art

[0002] In some areas of Xinjiang, my country, the electricity price is low at night. In order to save customer costs, the electric vacuum hot water boiler produces excess heat and stores it in the phase change heat storage device, using the electric vacuum boiler for heating at night and the phase change heat storage device for heating during the day, alternating between them. If the heating capacity of the phase change heat storage device during the day does not meet the requirements, the electric vacuum hot water boiler is used as an auxiliary heat source for heating.

[0003] Phase change heat storage device heating is to store or release heat by utilizing the characteristics of materials that can absorb or release a large amount of latent heat when the phase changes from solid to liquid or liquid to gas. Compared with the traditional variable temperature heat storage process, it has the advantages of low cost, large phase change latent heat, and a wide phase change temperature range. The heat storage device has a large heat storage capacity per unit volume, a small size of the heat storage equipment, saves equipment space, and has a long life; How to effectively combine the phase change heat storage device with the traditional electric vacuum hot water boiler to save costs is a direction that the current heating system needs to develop. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and propose an electric vacuum hot water boiler and phase change heat storage device combined heating system, comprising: an electric vacuum hot water boiler, a phase change heat storage device, a water outlet, and a water return device; The electric vacuum hot water boiler is connected to a first water supply pipeline and a first water return pipeline; The phase change heat storage device is connected to a second water supply pipeline and a second water return pipeline; The first water supply pipeline and the second water supply pipeline are both connected to the water outlet; the first water return pipeline and the second water return pipeline are both connected to the water return.

[0005] Preferably, a first heat storage pipeline is connected between the first water supply pipeline and the second water return pipeline; and a second heat storage pipeline is connected between the second water supply pipeline and the first water return pipeline.

[0006] Preferably, a first switch valve is provided on the first water supply pipeline; a second switch valve is provided on the second water supply pipeline; a third switch valve is provided on the first return water pipeline; and a fourth switch valve is provided on the second return water pipeline.

[0007] Preferably, a fifth switch valve is provided on the first heat storage pipeline, and a sixth switch valve is provided on the second heat storage pipeline.

[0008] Preferably, the first water supply pipeline, the second water supply pipeline, the first water return pipeline, and the second water return pipeline are all provided with thermometers and temperature transmitters.

[0009] Preferably, the first heat storage pipeline and the second heat storage pipeline are also provided with a thermometer and a temperature transmitter.

[0010] Compared with the existing technology, the beneficial effects of the present invention are as follows: the electric vacuum hot water boiler and the phase change heat storage device combined heating system mentioned in the present invention is to add a first heat storage pipeline and a second heat storage pipeline between the two independent systems so as to organically combine the two systems, and use the electric vacuum hot water boiler and the phase change heat storage device as the main heat sources to make them operate alternately, thereby reducing costs and achieving the purpose of stabilizing the system and saving costs; at the same time, when the phase change heat storage device is in operation, the electric vacuum hot water boiler as a backup heat source ensures the heating efficiency and safe and stable operation of the phase change heat storage device. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram of the overall structure of a heating system combined with an electric vacuum hot water boiler and a phase change heat storage device proposed by the present invention; Figure 2 This is a functional control block diagram of a combined heating system of an electric vacuum hot water boiler and a phase change heat storage device proposed by the present invention.

[0012] In the figure, 1, electric vacuum hot water boiler; 2, phase change heat storage device; 3, water outlet; 4, water return; 5, first water supply pipeline; 6, second water supply pipeline; 7, first water return pipeline; 8, second water return pipeline; 9, first heat storage pipeline; 10, second heat storage pipeline; DETAILED DESCRIPTION

[0013] 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 the embodiments.

[0014] Referring to the figure, this embodiment provides a heating system of an electric vacuum hot water boiler and a phase change heat storage device, comprising: an electric vacuum hot water boiler 1, a phase change heat storage device 2, a water outlet 3, and a water return device 4; The electric vacuum hot water boiler 1 is connected to a first water supply pipeline 5 and a first water return pipeline 7; The phase change heat storage device 2 is connected to a second water supply pipeline 6 and a second water return pipeline 8; The first water supply pipeline 5 and the second water supply pipeline 6 are both connected to the water outlet 3 ; the first water return pipeline 7 and the second water return pipeline 8 are both connected to the water return 3 .

[0015] Furthermore, a first heat storage pipeline 9 is connected between the first water supply pipeline 5 and the second water return pipeline 8 ; and a second heat storage pipeline 10 is connected between the second water supply pipeline 6 and the first water return pipeline 7 .

[0016] Specifically, the first water supply pipeline 5 is provided with a first switch valve 11 ; the second water supply pipeline 6 is provided with a second switch valve 12 ; the first water return pipeline 7 is provided with a third switch valve 13 ; and the second water return pipeline 8 is provided with a fourth switch valve 14 .

[0017] Furthermore, the first heat storage pipeline 9 is provided with a fifth switch valve 15 , and the second heat storage pipeline 10 is provided with a sixth switch valve 16 .

[0018] Furthermore, the first water supply pipeline 5 , the second water supply pipeline 6 , the first water return pipeline 7 , and the second water return pipeline 8 are all provided with a thermometer and a temperature transmitter.

[0019] Furthermore, the first heat storage pipeline 9 and the second heat storage pipeline 10 are also provided with a thermometer and a temperature transmitter.

[0020] Working principle: When the electric vacuum hot water boiler 1 is working alone and needs to provide external heating, the first switch valve is opened, the water path of the first water supply pipe is connected to the water outlet 3, and the first return pipe is connected to the return water 4, thereby completing the water supply and return cycle; At the same time, when the electric vacuum hot water boiler 1 needs to store heat in the phase change heat storage device 2 during operation, since the first heat storage pipeline 9 is connected between the first water supply pipeline 5 and the second return water pipeline 8, the valve of the second return water pipeline 8 is closed, the fifth switch valve 15 on the first heat storage pipeline 9 is opened, and the sixth switch valve 16 on the second heat storage pipeline 10 is opened at the same time, so that the hot water generated by the electric vacuum hot water boiler 1 enters the phase change heat storage device 2 for heat storage.

[0021] When the phase change heat storage device 2 works alone, the fifth switch valve 15 on the first heat storage pipeline 9 and the sixth switch valve 16 on the second heat storage pipeline 10 are closed, and the second control valve 12 on the second water supply pipe 6 and the fourth control valve 14 on the second water return pipe are opened at the same time, so that the second water outlet pipe is connected to the water outlet 3, and the second water return pipe 8 is connected to the water return 4 to form a heating circuit; When the hot water supply in the phase change heat storage device 2 is insufficient, the operation can be switched to the electric vacuum hot water boiler 1 .

[0022] In the above-mentioned embodiments and working principles, the electric vacuum hot water boiler 1 and the phase change heat storage device 2 combined heating system provided by the present application adopts the phase change heat storage system for heating, which is to release the heat stored in the electric vacuum hot water boiler 1 at night during the day to achieve the purpose of cost saving. At night, the electric vacuum hot water boiler 1 is the main heat source, and the electric vacuum hot water boiler 1 provides external heating while storing heat in the phase change heat storage device 2. During the day, the phase change heat storage device 2 is the main heat source, but the heating load changes dynamically, and the heating method of a single phase change heat storage device 2 cannot meet the heating demand. Therefore, the electric vacuum hot water boiler 1 and the phase change heat storage device 2 are used as the main heat sources that are alternately connected; The electric vacuum hot water boiler and phase change heat storage device combined heating system provided by the present invention uses the electric vacuum hot water boiler and the phase change heat storage device as main heat sources, makes them operate alternately, reduces costs, and achieves the purpose of stabilizing the system and realizing cost savings; at the same time, when the phase change heat storage device is in operation, the electric vacuum hot water boiler serves as a backup heat source to ensure the heating efficiency and safe and stable operation of the phase change heat storage device.

[0023] The above specific embodiments further illustrate the purpose, technical solutions and beneficial effects of the present invention. It should be understood that the above are only specific embodiments 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 according to the technical solutions and inventive concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

[0024] In addition, in the description of the present invention, it should be understood that the terms indicating orientation or positional relationships are based on the orientation or positional relationships shown in the drawings and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0025] Furthermore, in the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Claims

1. A heating system combined with an electric vacuum hot water boiler and a phase change heat storage device, characterized in that , comprising: an electric vacuum hot water boiler (1), a phase change heat storage device (2), a water outlet (3), and a water return device (4); The electric vacuum hot water boiler (1) is connected to a first water supply pipeline (5) and a first water return pipeline (7); The phase change heat storage device (2) is connected to a second water supply pipeline (6) and a second water return pipeline (8); The first water supply pipeline (5) and the second water supply pipeline (6) are both connected to the water outlet (3); the first water return pipeline (7) and the second water return pipeline (8) are both connected to the water return (3).

2. The electric vacuum hot water boiler and phase change heat storage device combined heating system according to claim 1 is characterized in that: A first heat storage pipeline (9) is connected between the first water supply pipeline (5) and the second water return pipeline (8); and a second heat storage pipeline (10) is connected between the second water supply pipeline (6) and the first water return pipeline (7).

3. The electric vacuum hot water boiler and phase change heat storage device combined heating system according to claim 1 is characterized in that: The first water supply pipeline (5) is provided with a first switch valve (11); the second water supply pipeline (6) is provided with a second switch valve (12); the first water return pipeline (7) is provided with a third switch valve (13); and the second water return pipeline (8) is provided with a fourth switch valve (14).

4. The electric vacuum hot water boiler and phase change heat storage device combined heating system according to claim 2, characterized in that: The first heat storage pipeline (9) is provided with a fifth switch valve (15), and the second heat storage pipeline (10) is provided with a sixth switch valve (16).

5. The electric vacuum hot water boiler and phase change heat storage device combined heating system according to claim 1, characterized in that: The first water supply pipeline (5), the second water supply pipeline (6), the first water return pipeline (7), and the second water return pipeline (8) are all provided with a thermometer and a temperature transmitter.

6. The electric vacuum hot water boiler and phase change heat storage device combined heating system according to claim 2, characterized in that: The first heat storage pipeline (9) and the second heat storage pipeline (10) are also provided with a thermometer and a temperature transmitter.

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