Low-temperature phase change heat storage heating system

Abstract

The utility model discloses a low-temperature phase change heat storage heating system, which belongs to the technical field of heat storage equipment and comprises a cold water tank arranged outside a greenhouse, a phase change heat storage water tank, a tiltable heat collection part and a water passing heat dissipation part mounted in the greenhouse, and the tiltable heat collection part is communicated with the water passing heat dissipation part through a telescopic hose. A first pump body is installed at the top of the cold water tank, water in the cold water tank can be pumped out by the first pump body and then conveyed into the water passing heat dissipation piece through a first guide pipe, a second pump body is fixedly installed at the top of the phase change heat storage water tank, and water in the phase change heat storage water tank can be pumped out by the second pump body and then conveyed into the water passing heat dissipation piece through a second guide pipe. The water passing heat dissipation piece is composed of a heat dissipation base of a hollow structure and a heat dissipation pipe with heat dissipation fins on the surface, the heat dissipation pipe is fixedly arranged at the top of the heat dissipation base, the two ends of the heat dissipation base are connected with the first guide pipe and the second guide pipe, and the heat storage efficiency, the heat conversion efficiency and the practicability are high.

Description

Technical Field

[0001] This utility model relates to a heat storage device, specifically a low-temperature phase change heat storage and heating system, belonging to the technical field of heat storage devices. Background Technology

[0002] With the increasing market demand for seedlings, the winter seedling market is growing, and winter-warm greenhouses are gradually showing their advantages of low cost and low energy consumption. However, conventional winter-warm greenhouses have a large number of earthen walls on both sides and the back, occupying a lot of land. Therefore, steel-frame winter-warm greenhouses have emerged because they occupy less land and are easy to install. However, the new steel-frame winter-warm greenhouses do not have earthen walls for heat storage, which leads to a drop in temperature inside the greenhouse at night in winter, affecting production. Most of the existing heat storage systems install hot water bags on the back wall, use a water supply circulation pump to transport water to the top of the hot water bags, and distribute the water evenly through the hot water bags through a water distribution device. The heated water is then stored in the heat storage equipment through a return pipe. When the temperature inside the greenhouse drops at night, the circulation pump is started to transport the stored hot water to the greenhouse heat dissipation device to raise the temperature inside the greenhouse.

[0003] Because water-based heat storage requires large water storage equipment, it occupies greenhouse planting space, and the temperature rise of the stored water is limited, which is not conducive to heat storage. Since water is used for heat storage and the storage temperature is not very high, the heat storage per unit volume is not very high. The volume of water required for heat storage is relatively large, which occupies a lot of greenhouse area. At the same time, the efficiency of the hot water absorption belt in converting solar energy into heat energy is not high, and it is easily damaged, resulting in high maintenance costs. Therefore, this application is made. Summary of the Invention

[0004] The purpose of this invention is to provide a low-temperature phase change heat storage heating system to solve the above problems. It can efficiently store heat through a phase change heat storage tank and significantly improve heat conversion efficiency through two heat collection structures: an tiltable heat collector and a water-cooled heat dissipation component.

[0005] This utility model achieves the above-mentioned objectives through the following technical solution: a low-temperature phase change heat storage heating system, comprising a cold water tank placed outside a greenhouse, a phase change hot water tank, a tiltable heat collector, and a water-cooled heat dissipation device installed inside the greenhouse. The phase change paraffin material in the phase change hot water tank can begin to absorb and store a large amount of heat after reaching 42°C, resulting in better heat storage compared to traditional water-based heat storage methods. The tiltable heat collector and the water-cooled heat dissipation device are connected by a flexible telescopic hose. A first pump body is installed on the top of the cold water tank. The water in the cold water tank can be drawn out and transported to the water-cooling component through the first conduit. A second pump body is fixedly installed on the top of the phase change hot water storage tank. The second pump body can draw out the water in the phase change hot water storage tank and transport it to the water-cooling component through the second conduit. This utility model uses a phase change hot water storage tank for heat storage, which has higher heat storage efficiency. It also has two heat collection structures: a tiltable heat collector and a water-cooling component. The connection state between the two can be adjusted, so that the heat extraction and conversion can be flexibly controlled. The heat conversion efficiency is high and the practicality is strong.

[0006] Preferably, the water-cooling component consists of a hollow heat sink and a heat dissipation tube with heat dissipation fins on its surface. The heat dissipation tube is fixedly installed on the top of the heat sink. Hot water can enter the heat dissipation tube through the heat sink, and heat can be efficiently conducted through the heat dissipation fins, so that both heat collection and heat dissipation can be kept efficient.

[0007] Preferably, the two ends of the heat sink are connected to the first conduit and the second conduit, and the heat sink is connected to the tiltable heat collector through a telescopic hose, so that the water in the heat sink can flow to the tiltable heat collector according to the selected direction.

[0008] Preferably, the telescopic hose, the first conduit, and the second conduit are all equipped with electrically controlled valves to control fluid guidance. In actual use, when collecting heat, cold water is simultaneously introduced into the heat sink and the tiltable heat collector. When dissipating heat into the greenhouse, the valve on the telescopic hose is closed to prevent heat from flowing to the tiltable heat collector and reduce heat loss.

[0009] Preferably, the tiltable solar collector comprises a fixed base, a hot water tank, and two control brackets mounted on the top of the fixed base. A drive motor is mounted on one of the control brackets. One end of the hot water tank is rotatably connected to the control bracket on the other side, and the other end is connected to the output shaft of the drive motor. The tilt angle of the hot water tank and the solar collector plate can be adjusted by the drive motor so that the solar collector plate can absorb solar energy more efficiently.

[0010] Preferably, a heat collection plate is provided on the side of the hot water tank facing away from the greenhouse. The contact surface between the heat collection plate and the hot water tank is made of a heat-conducting material, and the other side walls of the hot water tank are made of a heat-insulating material, which can effectively reduce heat loss.

[0011] Preferably, the top of the hot water tank is provided with an exhaust vent, which allows the air inside the hot water tank to be discharged outward. Furthermore, a water-blocking and venting structure, such as a water-blocking and venting valve, can be installed in the exhaust vent.

[0012] Preferably, the bottom of the hot water tank is connected to the inner cavity of the heat sink via a flexible hose, so that water in the heat sink can enter the hot water tank through the flexible hose.

[0013] The beneficial effects of this utility model are: This utility model uses a phase change hot water storage tank for heat storage, which has higher heat storage efficiency. At the same time, it has two heat collection structures: a tiltable heat collector and a water-cooled heat dissipation device. The connection state between the two can be adjusted, so that the heat extraction and conversion can be flexibly controlled. The heat conversion efficiency is high and the practicality is strong. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the location and structure of the greenhouse in this utility model.

[0015] Figure 2 This is a schematic diagram of the overall structure of this utility model.

[0016] Figure 3 This is a schematic diagram of the water-cooled heat dissipation component in this utility model.

[0017] Figure 4 This is a schematic diagram of the tiltable heat collector in this utility model.

[0018] In the diagram: 1. Cold water tank; 2. First pump body; 3. First conduit; 4. Phase change hot water storage tank; 5. Second pump body; 6. Second conduit; 7. Tiltable heat collector; 701. Fixed base; 702. Hot water tank; 703. Heat collector plate; 704. Control bracket; 705. Drive motor; 706. Vent; 8. Water-cooled heat dissipation component; 801. Heat dissipation base; 802. Heat dissipation pipe; 803. Telescopic flexible hose; 9. Greenhouse. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figures 1-4 As shown, a low-temperature phase change heat storage heating system includes a cold water tank 1 placed outside a greenhouse 9, a phase change hot water tank 4, a tiltable heat collector 7, and a water-cooled heat dissipation device 8 installed inside the greenhouse 9. The phase change paraffin material in the phase change hot water tank 4 can begin to absorb and store a large amount of heat after reaching 42°C, resulting in better heat storage compared to traditional water-based heat storage methods. The tiltable heat collector 7 and the water-cooled heat dissipation device 8 are connected by a flexible hose 803. A first pump 2 is installed on the top of the cold water tank 1, which can pump water from the cold water tank 1 and transport it to the water-cooled heat dissipation device 8 through a first conduit 3. A second pump 5 is fixedly installed on the top of the phase change hot water tank 4, which can pump water from the phase change hot water tank 4 and transport it to the water-cooled heat dissipation device 8 through a second conduit 6. In actual use, when sunlight reaches the set temperature inside the greenhouse, the first pump 2 is activated, pumping water from the cold water tank 1 to the tiltable heat collector 7. The tiltable heat collector 7 and the water-cooled heat dissipation device 8 are used to absorb heat from inside the greenhouse 9. The tiltable heat collector 7 is used to collect heat converted from solar energy outside the greenhouse. The tiltable heat collector 7 converts solar energy into heat energy through the heat collection plate 703, which is carried by water to the phase change hot water storage tank 4. After the phase change paraffin material in the phase change hot water storage tank 4 reaches 42°C, it begins to absorb and store a large amount of heat. When the temperature inside the greenhouse drops to the set temperature at night, the second pump 5 is turned on to transport the warm water in the phase change hot water storage tank 4 to the water-cooled heat dissipation device 8, releasing heat to heat the inside of the greenhouse 9. After the set temperature is reached, the supply of warm water stops. Compared with the existing heat storage system, this utility model uses the phase change hot water storage tank 4 for heat storage, which has higher heat storage efficiency. It also has two heat collection structures, the tiltable heat collector 7 and the water-cooled heat dissipation device 8, and the connection state of the two can be adjusted, so that the heat extraction and conversion can be flexibly controlled. The heat conversion efficiency is high and the practicality is strong.

[0021] The water-cooled heat dissipation component 8 consists of a hollow heat dissipation base 801 and a heat dissipation pipe 802 with heat dissipation fins on its surface. The heat dissipation pipe 802 is fixedly installed on the top of the heat dissipation base 801. Hot water can enter the heat dissipation pipe 802 through the heat dissipation base 801. Heat can be efficiently conducted through the heat dissipation fins. It can maintain high efficiency in both heat collection and heat dissipation. The two ends of the heat dissipation base 801 are connected to the first conduit 3 and the second conduit 6. The heat dissipation base 801 is connected to the tiltable heat collector 7 through the telescopic hose 803, so that the water in the heat dissipation base 801 can flow to the tiltable heat collector 7 according to the selected direction.

[0022] Electrically controlled valves are installed on the telescopic hose 803, the first conduit 3, and the second conduit 6 to control the fluid direction. In actual use, when collecting heat, cold water is simultaneously introduced into the heat sink 801 and the tiltable heat collector 7. When dissipating heat into the greenhouse 9, the valve on the telescopic hose 803 is closed to prevent heat from flowing to the tiltable heat collector 7 and reduce heat loss.

[0023] The tiltable solar collector 7 comprises a fixed base 701, a hot water tank 702, and two control brackets 704 mounted on the top of the fixed base 701. A drive motor 705 is mounted on one control bracket 704. One end of the hot water tank 702 is rotatably connected to the control bracket 704 on the other side, and the other end is connected to the output shaft of the drive motor 705. The tilt angle of the hot water tank 702 and the solar collector plate 703 can be adjusted by the drive motor 705 so that the solar collector plate 703 can absorb solar energy more efficiently. The solar collector plate 703 is set on the side of the hot water tank 702 facing away from the greenhouse 9. The contact surface between the solar collector plate 703 and the hot water tank 702 is made of thermally conductive material, and the other side walls of the hot water tank 702 are made of thermally insulating material, which can effectively reduce heat loss.

[0024] The top of the hot water tank 702 is provided with an exhaust port 706, which allows the air inside the hot water tank 702 to be discharged to the outside. Furthermore, a water-blocking and venting structure, such as a water-blocking and venting valve, can be installed in the exhaust port 706. The bottom of the hot water tank 702 is connected to the inner cavity of the heat sink 801 through a telescopic hose 803, which allows water in the heat sink 801 to enter the hot water tank 702 through the telescopic hose 803.

[0025] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0026] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A low-temperature phase change thermal storage heating system, characterized in that: The system includes a cold water tank (1) placed outside the greenhouse (9), a phase change hot water storage tank (4), a tiltable heat collector (7), and a water-cooling heat exchanger (8) installed inside the greenhouse (9). The tiltable heat collector (7) and the water-cooling heat exchanger (8) are connected by a telescopic hose (803). A first pump body (2) is installed on the top of the cold water tank (1). The first pump body (2) can pump water out of the cold water tank (1) and transport it to the water-cooling heat exchanger (8) through a first conduit (3). A second pump body (5) is fixedly installed on the top of the phase change hot water storage tank (4). The second pump body (5) can pump water out of the phase change hot water storage tank (4) and transport it to the water-cooling heat exchanger (8) through a second conduit (6).

2. The low-temperature phase change thermal storage heating system according to claim 1, characterized in that: The water-cooling component (8) consists of a hollow heat sink (801) and a heat sink tube (802) with heat dissipation fins on its surface. The heat sink tube (802) is fixedly installed on the top of the heat sink (801).

3. The low-temperature phase change thermal storage heating system according to claim 2, characterized in that: The two ends of the heat sink (801) are connected to the first conduit (3) and the second conduit (6), and the heat sink (801) is connected to the tiltable heat collector (7) through the telescopic hose (803).

4. The low-temperature phase change thermal storage heating system according to claim 3, characterized in that: The telescopic hose (803), the first conduit (3) and the second conduit (6) are all equipped with electrically controlled valve bodies for controlling fluid guidance.

5. The low-temperature phase change thermal storage heating system according to claim 4, characterized in that: The tiltable heat collector (7) consists of a fixed base (701), a hot water tank (702), and two control brackets (704) set on the top of the fixed base (701). A drive motor (705) is installed on one side of the control bracket (704). One end of the hot water tank (702) is rotatably connected to the control bracket (704) on the other side, and the other end is connected to the output shaft of the drive motor (705).

6. The low-temperature phase change thermal storage heating system according to claim 5, characterized in that: A heat collection plate (703) is provided on the side of the hot water tank (702) facing away from the greenhouse (9). The contact surface between the heat collection plate (703) and the hot water tank (702) is made of a heat-conducting material, and the other side walls of the hot water tank (702) are made of a heat-insulating material.

7. The low-temperature phase change thermal storage heating system according to claim 6, characterized in that: The top of the hot water tank (702) is provided with an exhaust vent (706).

8. The low-temperature phase change thermal storage heating system according to claim 7, characterized in that: The bottom of the hot water tank (702) is connected to the inner cavity of the heat sink (801) via a flexible hose (803).

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