Greenhouse heat exchange energy storage system

Abstract

The invention discloses a greenhouse heat exchange energy storage system which comprises an energy storage water tank, a heat exchange pipeline assembly, an air inlet pipe assembly and an air outlet pipe assembly which are arranged under the ground of a greenhouse, the air inlet pipe assembly extends to the upper portion of the indoor side of the greenhouse and is provided with a plurality of air inlets, and the air inlets suck hot air at the high position in the greenhouse; the air outlet pipe assembly extends to the lower middle portion of the greenhouse and is provided with an air outlet, and the air outlet pipe exhausts heat-exchanged air into the greenhouse. According to the greenhouse heat exchange energy storage system, heat energy is stored in water of the energy storage water tank, cold air obtained after heat exchange is discharged into the greenhouse again so that the temperature in the greenhouse can be adjusted, the greenhouse can be at the temperature suitable for plant growth, meanwhile, the stored heat energy can also be used for greenhouse heating at night, the heat energy absorbed in the daytime is fully utilized, and energy is saved. And heat waste is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of heat exchange, and in particular to a greenhouse heat exchange energy storage system. Background Art

[0002] Glass greenhouse is a common cultivation facility, suitable for plant cultivation in various regions and under various climatic conditions. For greenhouses, especially glass greenhouses, the temperature inside is easy to rise on sunny days with good sunshine. Too high a temperature is not suitable for plant growth, and it does not reflect the advantage of constant temperature in greenhouses. Therefore, existing greenhouses use ventilation and heat dissipation to exhaust hot air for cooling. Although this has a cooling effect, it wastes heat energy; and at night when the sun sets, a large amount of electric energy is required to heat to maintain the temperature, resulting in excessively high cost of use. Summary of the invention

[0003] The purpose of the present invention is to provide a greenhouse heat exchange energy storage system in view of the problems existing in the prior art.

[0004] To achieve the above object, the technical solution adopted by the present invention is: A greenhouse heat exchange energy storage system, comprising an energy storage water tank arranged under the greenhouse, wherein a heat exchange pipe assembly is arranged in the energy storage water tank, and when the greenhouse heat exchange energy storage system adopts air as a heat exchange medium, the heat exchange pipe assembly is connected with an air inlet pipe assembly and an air outlet pipe assembly, and when the greenhouse heat exchange energy storage system adopts liquid as a heat exchange medium, the heat exchange pipe assembly is connected with a heat exchange coil assembly extending into the greenhouse; the greenhouse hot air is adopted as a heat source, the energy storage water tank stores heat energy, and releases the stored heat energy into the greenhouse when the greenhouse temperature drops. heat energy; the air inlet pipe assembly extends to the upper indoor side of the greenhouse and is provided with a plurality of air inlets, the air inlets absorb hot air from a high position in the greenhouse, the air outlet pipe assembly extends to the middle and lower part of the greenhouse and is provided with an air outlet, the air outlet pipe discharges the heat exchanged air into the greenhouse; when air is used as the heat exchange medium, an exhaust assembly is further provided on the heat exchange pipe assembly and / or the air inlet pipe assembly and / or the air outlet pipe assembly; when liquid is used as the heat exchange medium, a water pump assembly is provided in the heat exchange pipe assembly and the heat exchange coil assembly.

[0005] The greenhouse heat exchange energy storage system can introduce high-position hot air in the greenhouse into the heat exchange pipeline assembly for heat exchange through the arrangement of the energy storage water tank, the heat exchange pipeline assembly, the air inlet pipe assembly and the air outlet pipe assembly, store the heat energy in the water of the energy storage water tank, and discharge the cold air after the heat exchange back into the greenhouse to adjust the temperature in the greenhouse so that the greenhouse is at a temperature suitable for plant growth. At the same time, the stored heat energy can also be used for heating the greenhouse at night, making full use of the heat energy absorbed during the day and reducing heat waste.

[0006] Alternatively, the heat exchange coil assembly arranged in the greenhouse is used to directly allow the water inside the heat exchange coil assembly to exchange heat with the hot air in the greenhouse, and then the hot water is stored in the energy storage tank.

[0007] The air inlet pipe assembly can introduce hot air from a high position in the greenhouse into the heat exchange pipe assembly. When the gas passes through the heat exchange pipe assembly, the air exchanges heat with the water in the energy storage tank, which can be either absorbing heat or releasing heat. The air inlet pipe assembly, the heat exchange pipe assembly and the air outlet pipe assembly are connected to the space inside the entire greenhouse to form an internal circulation system. This heat exchange and processing can be independent of the ventilation and heat exchange structure outside the greenhouse.

[0008] Furthermore, the air intake pipe assembly includes a vertical main air intake pipe connected to the heat exchange pipe assembly, and a high-level main air intake pipe connected to the vertical main air intake pipe, the vertical main air intake pipe is arranged upward along the steel frame in the greenhouse, the high-level main air intake pipe is arranged horizontally and / or vertically along the steel frame below the greenhouse roof, the high-level main air intake pipe is also connected to a plurality of high-level branch pipes, and a plurality of air inlets are provided below the high-level branch pipes, which basically cover the entire greenhouse, so that the high-temperature air can be better absorbed.

[0009] Furthermore, the vertical main air intake pipe, the high-position main air intake pipe and the high-position branch pipe are respectively connected to the steel frame through a thermal insulation pipe clamp assembly, and the thermal insulation pipe clamp assembly includes a "J"-shaped pipe clamp, and the pipe clamp is connected to the steel frame. The inner periphery of the pipe clamp is provided with a thermal insulation gasket and a thermal insulation pad abutting the steel frame, which can not only better support and connect the vertical main air intake pipe, the high-position main air intake pipe and the high-position branch pipe, but also form a thermal insulation structure to reduce heat exchange with metal parts in the greenhouse, so as to reduce heat waste and loss.

[0010] Furthermore, the air outlet pipe assembly includes an air outlet main pipe connected to the heat exchange pipe assembly, the air outlet main pipe extends vertically out of the ground of the greenhouse and is connected to a plurality of air outlet branch pipes, the air outlet is arranged at the end or side of the air outlet branch pipe, and the air outlet does not exceed 1 / 3 of the indoor height of the greenhouse.

[0011] Furthermore, the air inlet and the air outlet are respectively provided with detachable filter screens, and the high-position filter screen is also provided with a self-cleaning mechanism. The setting of the filter screen can prevent debris from being sucked into the pipeline during air inhalation, so as to avoid adverse effects on the heat exchange pipeline assembly and affect gas circulation and heat exchange.

[0012] Furthermore, the exhaust air component is an induced draft fan and / or an exhaust fan, which guides air to flow into the heat exchange pipeline component.

[0013] Furthermore, the energy storage water tank is a concrete ditch arranged underground, the concrete ditch is arranged in a circuitous closed loop, at least one heat exchange pipeline assembly is provided along the direction of the concrete ditch, and a water filtering device and a purification device are also provided in the concrete ditch; a plurality of maintenance channels are arranged at intervals on the energy storage water tank, the maintenance channels extend out of the ground of the greenhouse and are provided with maintenance ports with end covers, and the maintenance channels are provided at each turning node of the ditch; a ground channel is also provided on the energy storage water tank, the ground channel extends to the ground of the greenhouse and is provided with a grille cover plate, and the air inlet pipe assembly or the air outlet pipe assembly is connected to the ground channel.

[0014] Furthermore, the inner wall of the energy storage water tank is provided with a heat-insulating layer, and waterproof layers are respectively provided on both sides of the heat-insulating layer.

[0015] Furthermore, the heat exchange pipe assembly includes multiple sections of heat exchange pipes, and a plurality of inclined heat exchange baffles are provided in the heat exchange pipes. The heat exchange baffles are arranged along the length direction of the heat exchange pipes and divide the internal space of the heat exchange pipes into a plurality of chambers arranged along the length direction.

[0016] Furthermore, a plurality of metal pipe supports are arranged at intervals along the direction of the energy storage water tank, and the heat exchange pipeline assembly is installed on the metal pipe supports. The cross-sectional size of the energy storage water tank is not less than 0.1m 2 , the overall length of the energy storage tank is not less than 30m.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. The greenhouse heat exchange energy storage system can introduce high-level hot air in the greenhouse into the heat exchange pipeline assembly for heat exchange through the arrangement of the energy storage water tank, the heat exchange pipeline assembly, the air inlet pipe assembly and the air outlet pipe assembly, store the heat energy in the water of the energy storage water tank, and discharge the cold air after heat exchange back into the greenhouse to adjust the temperature in the greenhouse so that the greenhouse is at a temperature suitable for plant growth. At the same time, the stored heat energy can also be used for heating the greenhouse at night, making full use of the heat absorbed during the day. 1. When the greenhouse heat exchange energy storage system uses liquid as the heat exchange medium, the heat exchange pipe assembly is connected to a heat exchange coil assembly extending into the greenhouse, and the heat of the air is directly absorbed by the heat exchange between the hot air and the liquid in the greenhouse, and the liquid that absorbs the heat is then circulated to the heat exchange pipe assembly to exchange heat with the energy storage tank; 2. The air inlet pipe assembly, the heat exchange pipe assembly and the air outlet pipe assembly are connected to form an internal circulation system with the space inside the entire greenhouse. This heat exchange and processing can be independent of Ventilation and heat exchange structure outside the greenhouse; 4. This heat exchange energy storage system can play a role in different seasons. Whether in winter or in hot summer, the water temperature in the energy storage tank can be adjusted to about 25-30 degrees Celsius through heat storage, insulation and heat exchange. This temperature of water can also be used as the best water temperature for warm water aquaculture; there is no greenhouse effect on winter nights. At this time, the heat energy in the hot water is circulated and released into the air to heat the greenhouse air and keep the temperature of the greenhouse within a range of not less than 15 degrees Celsius; 5. The energy storage tank does not need to occupy the planting space inside the greenhouse, and the volume is not limited by the facilities in the greenhouse, which can make the capacity of the energy storage tank larger. The underground structure can also maintain the water temperature well and reduce heat loss; the energy storage tank is a concrete structure, so that it can be made larger, and the structure will be very strong and stable, without affecting the construction of the greenhouse above; 6. The length of the concrete ditch can be greatly increased by setting it in a roundabout way. Its length can be greater than the circumference of the entire greenhouse, so that more water can be stored and the length of the heat exchange path can be increased, which is conducive to sufficient heat exchange of the air. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall layout of a greenhouse heat exchange energy storage system of the present invention; Figure 2 It is a schematic diagram of the partial arrangement of high-position branch pipes of a greenhouse heat exchange energy storage system of the present invention; Figure 3 It is a schematic diagram of the arrangement of energy storage tanks of a greenhouse heat exchange energy storage system of the present invention; Figure 4 Schematic diagram of the connection between the pipeline and the steel frame of the greenhouse heat exchange energy storage system of the present invention Figure 1 ; Figure 5 Schematic diagram of the connection between the pipeline and the steel frame of the greenhouse heat exchange energy storage system of the present invention Figure 2 ; Figure 6 A schematic diagram of providing filter screens at the air inlet and the air outlet of the present invention; Figure 7 It is a schematic diagram of arranging a heat exchange pipeline assembly in the energy storage tank of the present invention; Figure 8 It is a schematic diagram of the cross-sectional structure of the heat exchange pipeline of the present invention; In the figure: 1. Energy storage tank; 2. Vertical main air inlet pipe; 3. High main air inlet pipe; 4. High branch pipe; 5. Air inlet; 6. Air outlet main pipe; 7. Air outlet; 8. Maintenance passage; 9. Underground channel; 10. Pipe clamp; 11. Thermal insulation block; 12. Thermal insulation gasket; 13. Filter; 14. Insulation layer; 15. Waterproof layer; 16. Heat exchange tube; 17. Heat exchange baffle; 18. Metal pipe support. DETAILED DESCRIPTION

[0019] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "middle", "upper", "lower", "left", "right", "inner", "outer", etc. are based on the directions 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 direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0021] like Figure 1 to Figure 3 As shown, a greenhouse heat exchange energy storage system comprises an energy storage tank 1 arranged under the greenhouse, a heat exchange pipeline assembly is arranged in the energy storage tank 1, the heat exchange pipeline assembly is connected with an air inlet pipe assembly and an air outlet pipe assembly, the air inlet pipe assembly extends to the upper indoor side of the greenhouse and is provided with a plurality of air inlets 5, the air inlet 5 absorbs hot air from a high position in the greenhouse, the air outlet pipe assembly extends to the middle and lower part of the greenhouse and is provided with an air outlet 7, the air outlet pipe discharges the heat exchanged air into the greenhouse; the air inlet 5 and the air outlet 7 are respectively provided with automatic valves, and the heat exchange pipeline assembly and / or the air inlet pipe assembly and / or the air outlet pipe assembly are also provided with an exhaust assembly.

[0022] The greenhouse heat exchange energy storage system can introduce high-position hot air in the greenhouse into the heat exchange pipeline assembly for heat exchange through the arrangement of the energy storage water tank, the heat exchange pipeline assembly, the air inlet pipe assembly and the air outlet pipe assembly, store the heat energy in the water of the energy storage water tank, and discharge the cold air after the heat exchange back into the greenhouse to adjust the temperature in the greenhouse so that the greenhouse is at a temperature suitable for plant growth. At the same time, the stored heat energy can also be used for heating the greenhouse at night, making full use of the heat energy absorbed during the day and reducing heat waste.

[0023] The air inlet pipe assembly can introduce hot air from a high position in the greenhouse into the heat exchange pipe assembly. When the gas passes through the heat exchange pipe assembly, the air exchanges heat with the water in the energy storage tank, which can be either absorbing heat or releasing heat. The air inlet pipe assembly, the heat exchange pipe assembly and the air outlet pipe assembly are connected to the space inside the entire greenhouse to form an internal circulation system. This heat exchange and processing can be independent of the ventilation and heat exchange structure outside the greenhouse.

[0024] The air inlet 5 is arranged at a high position in the greenhouse, which can effectively absorb the rising hot air, and the air outlet 7 at a low position can release cold air. Such a setting is conducive to the gas circulation and temperature control inside the greenhouse, and is also in line with the principles of air thermodynamics. The air inlet 5 and the air outlet 7 are not located in only one place. They will be distributed throughout the greenhouse according to the design. Therefore, automatic valves are distributed on the pipelines at each air inlet 5 and air outlet 7, which can be opened and closed according to the instructions of the controller to perform heat exchange in a purposeful manner. In order to allow the air to circulate more smoothly and directionally, the exhaust assembly is provided, which can more efficiently circulate the airflow along the preset path.

[0025] This heat exchange energy storage system can function in different seasons, whether in winter or in the hot summer. Through heat storage, insulation and heat exchange, the water temperature in the energy storage tank can be adjusted to around 25-30 degrees Celsius. This water temperature can also be used as the optimal water temperature for warm water aquaculture. On winter nights, there is no greenhouse effect and the air in the greenhouse will cool down quickly. At this time, the heat energy in the hot water will be circulated and released into the air to heat the greenhouse air and keep the temperature of the greenhouse under control at no less than 15 degrees Celsius.

[0026] Furthermore, the air intake pipe assembly includes a vertical main air intake pipe 2 connected to the heat exchange pipe assembly, and a high-level main air intake pipe 3 connected to the vertical main air intake pipe 2, the vertical main air intake pipe 2 is arranged upward along the steel frame in the greenhouse, the high-level main air intake pipe 3 is arranged horizontally and / or vertically along the steel frame below the greenhouse roof, the high-level main air intake pipe 3 is also connected to a plurality of high-level branch pipes 4, and a plurality of air inlets 5 are provided below the high-level branch pipes 4.

[0027] The vertical main air intake pipe 2 can extend along the columns of the steel frame to the top of the greenhouse, and then be connected thereto through the high-level main air intake pipe arranged above to form a connecting structure; the high-level branch pipe can be arranged according to the actual area and layout of the greenhouse, and each high-level branch pipe can be responsible for the air intake within a certain range. After being dispersedly arranged, it will basically cover the entire greenhouse, so that the high-temperature air can be better absorbed.

[0028] Further, such as Figure 4 and Figure 5 As shown, the vertical main air intake pipe 2, the high-position main air intake pipe 3 and the high-position branch pipe 4 are respectively connected to the steel skeleton through a thermal insulation pipe clamp assembly, and the thermal insulation pipe clamp assembly includes a "J"-shaped pipe clamp 10, and the pipe clamp 10 is connected to the steel skeleton. The inner periphery of the pipe clamp 10 is provided with a thermal insulation gasket 12 and a thermal insulation pad 11 abutting against the steel skeleton.

[0029] By utilizing the arrangement of the thermal insulation gasket 12 and the thermal insulation pad block 11, the vertical main air intake pipe, the high main air intake pipe and the high branch pipe can be better supported and connected, and a thermal insulation structure can be formed to reduce heat exchange with metal parts in the greenhouse to reduce heat waste and loss, and these pipes can also be protected to prevent damage to the outer walls of the pipes.

[0030] For vertical pipe installation, the heat insulation pad and the pipe clamp are vertically arranged on the column to bind the pipe to the side of the column. For high-position pipes, they can be installed by support or by hoisting. This connection method is not limited to the cross-sectional shape of the pipe, and both circular and rectangular pipes can be connected and installed.

[0031] Furthermore, the air outlet pipe assembly includes an air outlet main pipe 6 connected to the heat exchange pipe assembly, the air outlet main pipe 6 extends vertically out of the ground of the greenhouse and is connected to a plurality of air outlet branch pipes, the air outlet 7 is arranged at the end or side of the air outlet branch pipe, and the air outlet 7 does not exceed 1 / 3 of the indoor height of the greenhouse.

[0032] The outlet main pipe 6 can also be connected and fixed by the above-mentioned pipe clamp, heat insulating pad and heat insulating gasket. The outlet branch pipes are also dispersedly arranged in the whole greenhouse to discharge cold air from multiple positions, and the position of the outlet branch pipes is not easy to be too high.

[0033] Further, such as Figure 6As shown, the air inlet 5 and the air outlet 7 are respectively provided with a detachable filter 13, and the filter 13 can prevent debris from being sucked into the pipeline during air inhalation, so as to avoid adverse effects on the heat exchange pipeline assembly, affecting gas circulation and heat exchange. The filter can be removed for replacement and maintenance.

[0034] In some embodiments, a self-cleaning mechanism is also provided on the high-position filter screen. Since the high-position filter screen is located at a high position and is not convenient for manual cleaning, the self-cleaning mechanism is provided to automatically clean it; for example, a rotatable rod body is provided on the filter screen of a circular pipe, and a brush and / or a scraper are provided on the rod body. The rod body is driven to rotate and move by a motor, so that the brush and / or the scraper clean the filter screen to keep it clean and unobstructed. One end of the rod body is rotatably installed in the middle of the filter screen and is connected to a motor so that it can rotate around the filter screen; a rod body slidably connected to the pipe wall can be provided in a rectangular pipe, and a brush and / or a scraper is provided on the rod body. The motor and the push-pull rod are used to drive the rod body up and down to achieve cleaning.

[0035] Furthermore, the air extraction and exhaust component is an induced draft fan and / or an exhaust fan, which can be arranged in the pipeline, can be arranged at the pipe mouth, and can also be connected to the pipeline through a bypass.

[0036] Further, combined with Figure 3 and Figure 7 As shown, the energy storage water tank 1 is a concrete culvert arranged underground, the concrete culvert is arranged in a circuitous closed loop, and the energy storage water tank 1 is provided with at least one heat exchange pipeline assembly along its direction; a plurality of inspection channels 8 are arranged at intervals on the energy storage water tank 1, the inspection channels 8 extend out of the ground of the greenhouse and are provided with inspection ports with end covers, and the inspection channels 8 are provided at each turning node of the culvert; a ground channel 9 is also provided on the energy storage water tank 1, the ground channel 9 extends to the ground of the greenhouse and is provided with a grille cover, and the air inlet pipe assembly or the air outlet pipe assembly is connected to the ground channel.

[0037] The concrete culvert is also provided with a circulation pump to keep the water flowing in the culvert. The culvert channel is also provided with a water filtering device and a purification device, such as a filter net, a water purifier, etc., to keep the water clean.

[0038] Since the energy storage water tank 1 is set underground, on the one hand, it does not need to occupy the planting space inside the greenhouse, and the volume of the energy storage water tank is not limited by the facilities in the greenhouse, which can make the capacity of the energy storage water tank larger. On the other hand, the underground structure can well maintain the water temperature and reduce heat loss. The energy storage water tank 1 is a concrete structure, so it can be made larger, and the structure will be very strong and stable, and will not affect the construction of the greenhouse above. The energy storage water tank 1 can be above the paved greenhouse floor, or a thermal insulation and waterproof cover plate can be set before paving the ground to seal the energy storage water tank and reduce water evaporation. Even if there is evaporated water vapor, it will condense under the thermal insulation and waterproof cover plate and fall back into the water tank, reducing water loss.

[0039] By setting the concrete culvert in a circuitous manner, the length of the culvert can be greatly increased, and its length can be greater than the circumference of the entire greenhouse, so that more water can be stored and the length of the heat exchange path can be increased, which is conducive to sufficient heat exchange of the air.

[0040] For the heat exchange pipeline assembly, its turning and bending places are also at the turning nodes of the concrete culvert. An inspection passage for the inspection port is set at this place, which is conducive to the later maintenance of the heat exchange pipeline and can also take out and replace the heat exchange tube in sections.

[0041] Furthermore, the inner wall of the energy storage tank 1 is provided with an insulation layer 14, and waterproof layers 15 are provided on both sides of the insulation layer 14. The insulation layer 14 can be a covering insulation building material, and the waterproof layer 15 can be a waterproof coating or waterproof coiled material. During construction, the insulation building material can be laid first, and then the waterproof coating can be applied; or the waterproof coiled material can be laid, and then the insulation building material can be laid, and then the waterproof coating can be applied. This structure can improve the insulation and waterproof performance of the entire tank.

[0042] Further, combined with Figure 8 As shown, the heat exchange pipe assembly includes multiple sections of heat exchange pipes 16, and a plurality of inclined heat exchange baffles 17 are provided in the heat exchange pipes 16. The heat exchange baffles 17 are arranged along the length direction of the heat exchange pipes 16 and divide the internal space of the heat exchange pipes 16 into a plurality of chambers arranged along the length direction.

[0043] By arranging a plurality of the heat exchange baffles 17 in the heat exchange tube 16, not only can the interior of the heat exchange tube be divided into a plurality of ventilation chambers, but also the contact area between the inflowing air and the heat exchange baffles 17 and the heat exchange tube 16 can be increased, which is beneficial to increase the area for heat exchange between the air in the heat exchange tube and the cooling medium outside the heat exchange tube, thereby greatly improving the heat exchange efficiency and effect without affecting the air flow speed and smoothness; and the structure of the entire heat exchange tube is not complicated, and it is easy to manufacture, install and use.

[0044] The heat exchange baffles 17 are arranged along the length direction. A plurality of the heat exchange baffles 17 can increase the surface area inside the tube exponentially, which greatly increases the contact area between air and metal, and does not form a shielding structure in the cross-sectional direction, thereby not affecting the normal circulation of air.

[0045] The heat exchange tube 16 and the heat exchange baffle 17 are made of the same metal material, such as steel, aluminum or copper, and preferably aluminum tubes and aluminum plates, which have good heat transfer function, are light and easy to weld, and are easy to manufacture and install.

[0046] Furthermore, a plurality of metal pipe supports 18 are arranged at intervals along the direction of the energy storage water tank 1, and the heat exchange pipeline assembly is installed on the metal pipe supports 18. The cross-sectional size of the energy storage water tank 1 is not less than 0.1m 2 The total length of the energy storage tank is not less than 30m. For a greenhouse exceeding 2,000 square meters, the total length of the underground ditch will exceed 400m.

[0047] The metal tube support 18 also has heat transfer capability, and is used to support the heat exchange tube 16 without affecting its heat exchange. The bottom of the metal tube support 18 is connected to the bottom of the energy storage water tank through a bottom plate, and a support plate is provided on the top, so that these heat exchange tubes can be conveniently installed, connected and fixed, and supported. There is water all around, which is conducive to sufficient heat exchange.

[0048] In some other embodiments, the heat exchange pipe assembly is connected to a heat exchange coil assembly, and the two are interconnected. A water pump assembly built into the pipe is used to circulate the liquid therein. The heat exchange coil assembly includes a plurality of heat exchange coils arranged at a high position in the greenhouse. The heat absorption and heat exchange capabilities are utilized to allow the liquid therein to exchange heat with the external hot air, so as to achieve the effect of absorbing heat from the hot air in the greenhouse. At the same time, the absorbed heat energy is stored in the energy storage tank in the form of heat exchange. At night or when the greenhouse is at a low temperature, the greenhouse air is heated up by heat exchange between the liquid and the air.

[0049] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A greenhouse heat exchange energy storage system, characterized in that: It includes an energy storage water tank arranged under the greenhouse, wherein a heat exchange pipe assembly is arranged in the energy storage water tank. When the greenhouse heat exchange energy storage system adopts air as the heat exchange medium, the heat exchange pipe assembly is connected with an air inlet pipe assembly and an air outlet pipe assembly. When the greenhouse heat exchange energy storage system adopts liquid as the heat exchange medium, the heat exchange pipe assembly is connected with a heat exchange coil assembly extending into the greenhouse. The greenhouse hot air is used as the heat source, and the energy storage water tank stores heat energy, and releases the stored heat energy into the greenhouse when the greenhouse temperature drops. The air inlet pipe assembly extends to the upper indoor side of the greenhouse and is provided with a plurality of air inlets, the air inlets draw in hot air from a high position in the greenhouse, the air outlet pipe assembly extends to the middle and lower part of the greenhouse and is provided with an air outlet, the air outlet pipe discharges the heat-exchanged air into the greenhouse; when air is used as the heat exchange medium, an exhaust assembly is also provided on the heat exchange pipe assembly and / or the air inlet pipe assembly and / or the air outlet pipe assembly; when liquid is used as the heat exchange medium, a water pump assembly is provided in the heat exchange pipe assembly and the heat exchange coil assembly.

2. The greenhouse heat exchange energy storage system according to claim 1, characterized in that: The air intake pipe assembly includes a vertical main air intake pipe connected to the heat exchange pipeline assembly, and a high-position main air intake pipe connected to the vertical main air intake pipe, the vertical main air intake pipe is arranged upward along the steel frame in the greenhouse, the high-position main air intake pipe is arranged horizontally and / or vertically along the steel frame below the greenhouse roof, the high-position main air intake pipe is also connected to a plurality of high-position branch pipes, and a plurality of air inlets are provided below the high-position branch pipes.

3. The greenhouse heat exchange energy storage system according to claim 2, characterized in that: The vertical main air intake pipe, the high-position main air intake pipe and the high-position branch pipe are respectively connected to the steel skeleton through a thermal insulation pipe clamp assembly. The thermal insulation pipe clamp assembly includes a "J"-shaped pipe clamp, which is connected to the steel skeleton. The inner periphery of the pipe clamp is provided with a thermal insulation gasket and a thermal insulation pad abutting the steel skeleton.

4. The greenhouse heat exchange energy storage system according to claim 1, characterized in that: The air outlet pipe assembly includes an air outlet main pipe connected to the heat exchange pipe assembly, the air outlet main pipe extends vertically out of the ground of the greenhouse and is connected to a plurality of air outlet branch pipes, the air outlet is arranged at the end or side of the air outlet branch pipe, and the air outlet does not exceed 1 / 3 of the indoor height of the greenhouse.

5. The greenhouse heat exchange energy storage system according to claim 1, characterized in that: The air inlet and the air outlet are respectively provided with detachable filter screens, and the high-position filter screen is also provided with a self-cleaning mechanism.

6. The greenhouse heat exchange energy storage system according to claim 1, characterized in that: The air extraction and exhaust component is an induced draft fan and / or an exhaust fan.

7. The greenhouse heat exchange energy storage system according to claim 1, characterized in that: The energy storage water tank is a concrete culvert arranged underground, the concrete culvert is arranged in a circuitous closed loop, at least one heat exchange pipeline assembly is arranged along the direction of the concrete culvert, and a water filtering device and a purification device are also arranged in the concrete culvert; a plurality of maintenance channels are arranged at intervals on the energy storage water tank, the maintenance channels extend out of the ground of the greenhouse and are provided with maintenance ports with end covers, and the maintenance channels are arranged at each turning node of the culvert; a ground channel is also provided on the energy storage water tank, the ground channel extends to the ground of the greenhouse and is provided with a grille cover plate, and the air inlet pipe assembly or the air outlet pipe assembly is connected to the ground channel.

8. The greenhouse heat exchange energy storage system according to claim 1, characterized in that: The inner wall of the energy storage water tank is provided with a heat preservation layer, and both sides of the heat preservation layer are provided with a waterproof layer respectively.

9. The greenhouse heat exchange energy storage system according to claim 1, characterized in that: The heat exchange pipe assembly includes multiple sections of heat exchange pipes, and a plurality of inclined heat exchange baffles are arranged in the heat exchange pipes. The heat exchange baffles are arranged along the length direction of the heat exchange pipes and divide the internal space of the heat exchange pipes into a plurality of chambers arranged along the length direction.

10. The greenhouse heat exchange energy storage system according to claim 1, characterized in that: A plurality of metal pipe supports are arranged at intervals along the direction of the energy storage water tank, and the heat exchange pipeline assembly is installed on the metal pipe supports. The cross-sectional size of the energy storage water tank is not less than 0.1m 2 , the overall length of the energy storage tank is not less than 30m.

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