CN113875448B - Solar greenhouse metal film heat collecting and releasing device - Google Patents
Solar greenhouse metal film heat collecting and releasing device Download PDFInfo
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- CN113875448B CN113875448B CN202111077036.6A CN202111077036A CN113875448B CN 113875448 B CN113875448 B CN 113875448B CN 202111077036 A CN202111077036 A CN 202111077036A CN 113875448 B CN113875448 B CN 113875448B
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- heat
- honeycomb
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- pebble
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G9/00—Cultivation in receptacles, forcing-frames or greenhouses; Edging for beds, lawn or the like
- A01G9/14—Greenhouses
- A01G9/1407—Greenhouses of flexible synthetic material
- A01G9/1415—Greenhouses of flexible synthetic material with double or multiple walls
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G9/00—Cultivation in receptacles, forcing-frames or greenhouses; Edging for beds, lawn or the like
- A01G9/24—Devices or systems for heating, ventilating, regulating temperature, illuminating, or watering, in greenhouses, forcing-frames, or the like
- A01G9/246—Air-conditioning systems
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/25—Greenhouse technology, e.g. cooling systems therefor
Abstract
The invention discloses a solar greenhouse metal film heat collecting and releasing device, which belongs to the technical field of solar greenhouses and comprises a back slope, a wall body and a greenhouse surface; a wall body is connected below the rear slope, and a canopy surface is connected in front of the rear slope; a honeycomb heat absorption layer and a pebble layer are arranged in the wall body; the honeycomb heat absorption layer is positioned in front of the wall body, a honeycomb concave surface and a honeycomb convex surface are arranged on the honeycomb heat absorption layer, and a metal film is arranged in the honeycomb convex surface; the pebble layer is positioned below the honeycomb heat absorption layer, and a gap adjusting device is arranged on the pebble layer. The invention is scientific and reasonable, safe and convenient to use, and the metal film is arranged in the concave honeycomb structure to increase heat energy accumulation, thereby being beneficial to increasing the heat absorption efficiency of the metal film, reducing the use area of the metal film and saving the cost. The metal film heat collecting and releasing device is combined with the pebble layer, so that the utilization rate of heat energy in the concave surface of the honeycomb is improved, the cost of the reservoir is reduced, and the land utilization rate is improved. The gap adjusting device adjusts the gap of the pebble so that the heat conduction rate of the pebble layer can be changed.
Description
Technical Field
The invention relates to the technical field of sunlight greenhouses, in particular to a metal film heat collecting and releasing device of a sunlight greenhouse.
Background
The sunlight greenhouse adopts simpler facilities, consists of a rear wall body, a supporting framework, a rear slope, a covering material and the like, and is mainly applied to the overwintering cultivation of vegetables in the northern area of China in the cold period. The solar greenhouse metal film heat collecting and releasing device is capable of realizing heat accumulation and release by absorbing heat energy through a rear wall body without heating indoors and maintaining a certain indoor temperature level so as to meet the growth needs of vegetable crops.
In the existing metal film heat collecting and releasing device, a metal film is directly arranged on the inner surface of a rear wall body, a sunlight greenhouse is large in size, heat energy cannot be accumulated on one surface, heat storage efficiency of the metal film is low, the required area is large, and cost is high. The invention is provided with the honeycomb heat absorption layer, the metal film is arranged in the concave surface of the honeycomb, and the heat energy is accumulated in the concave surface of the honeycomb by utilizing the honeycomb structure of the concave surface, so that the heat absorption efficiency of a single metal film is increased, the use area of the metal film is reduced, and the cost is saved. Secondly, the existing metal film heat collecting and releasing device mainly realizes heat storage and heat release by circulating heat absorbing medium water, if the heat releasing time of the sunlight greenhouse at night is required to be maintained, a water reservoir needs to be built, the larger the water reservoir is, the stronger the heat storage capacity is, but the land utilization area is reduced, and the cost is higher. The invention combines the metal film heat collecting and releasing device with the pebble layer; the heat energy stored in the concave honeycomb surface can be stored in the circulating water layer after being absorbed by the metal film, can be absorbed by the convex honeycomb surface connected with the concave honeycomb surface and stored in the pebble layer, so that the utilization rate of the heat energy in the concave honeycomb surface is improved, the cost for building the reservoir is reduced, and the land utilization rate is improved. Finally, the existing heat collecting and releasing device does not adjust gaps among pebbles, and the heat conductivity is constant; if the gap is too large, the heat conduction speed in the pebble layer is easy to be too high, so that the temperature of the greenhouse in the late middle night is low; if the gap is too small, the conduction speed of heat in the pebble layer is easy to be slow, and the heat energy accumulated in the daytime is wasted. The gap adjusting device is arranged to adjust gaps among pebbles, so that the heat conduction rate of the pebble layer is changed, and the heat conduction rate of the pebble layer can be determined according to the night temperature of the sunlight greenhouse.
Disclosure of Invention
The invention aims to provide a metal film heat collecting and releasing device for a sunlight greenhouse, which aims to solve the problems in the prior art.
In order to achieve the above purpose, the present invention provides the following technical solutions: a solar greenhouse metal film heat collecting and releasing device comprises a back slope, a wall body and a greenhouse surface; the wall body is connected with the back slope below, the back slope place ahead is connected with the canopy face, canopy face below is equipped with the soil horizon, soil horizon below is equipped with the insulating layer, the insulating layer below is equipped with the circulation water layer.
The wall body is favorable for absorbing heat energy in daytime, and the greenhouse surface is transparent and can accommodate sunlight to penetrate and irradiate on planted crops. The soil layer is favorable for planting crops, and the circulating water layer is favorable for storing heat energy absorbed by the wall body during daytime and releasing the heat energy at night when the temperature is low. The heat insulation layer is favorable for better heat storage of the circulating water layer, prevents heat energy from radiating a part of the circulating water layer, and simultaneously blocks the heat energy to prevent the growth of crops due to overhigh temperature below the soil layer.
Preferably, the wall body comprises a honeycomb heat absorption layer, a heat preservation layer and a pebble layer; the honeycomb heat absorption layer is positioned in front of the wall body, the pebble layer is positioned below the honeycomb heat absorption layer, the heat preservation layer is positioned behind the honeycomb heat absorption layer and the pebble layer, and clay bricks are arranged behind the heat preservation layer; the honeycomb heat absorption layer is provided with a honeycomb concave surface and a honeycomb convex surface, the honeycomb concave surface and the honeycomb convex surface are arranged in a staggered mode, and a metal film is arranged in the honeycomb concave surface.
The honeycomb heat-absorbing layer is favorable for absorbing a large amount of heat in the daytime, the pebble layer is favorable for storing the heat absorbed by the wall body, the heat-insulating layer is favorable for storing the heat by the honeycomb heat-absorbing layer and the pebble layer, the clay bricks are favorable for bearing the wall body, and the collapse of the sunlight greenhouse caused by overweight of the wall body is prevented. The concave surface structure of the honeycomb concave surface is beneficial to gathering heat energy into the concave surface structure, and the gathered heat energy is not easy to be blown away by wind when the sunlight greenhouse is ventilated. The metal film is not easy to damage, can be used for a long time, is favorable for absorbing heat energy, and has more remarkable heating effect compared with the transparent film and the black film; the convex honeycomb surface is beneficial to absorb heat energy in the concave honeycomb surface.
Preferably, the honeycomb convex surface is a hollow structure, a heat absorption fan is arranged around the honeycomb convex surface, a heat absorption channel is arranged inside the honeycomb convex surface, a heat insulation wall is arranged outside the heat absorption channel, the heat absorption channel is connected with the heat absorption fan, the heat absorption channel is converged in a heat transfer channel, and the heat transfer channel is communicated with the pebble layer.
The heat absorption fan is favorable for absorbing heat energy in the honeycomb concave surface into the hollow structure of the honeycomb convex surface, the heat absorption channel is a pipeline for transferring heat to the heat transfer channel, and the heat transfer channel is favorable for conveying the heat energy into the pebble layer.
Preferably, the metal film is internally provided with a water flow passage, the water flow passages in the same row are connected with water diversion pipes, a plurality of water diversion pipes are connected with a water collecting pipe, a branch water pipe below the water collecting pipe is connected with a water pump, a circulating water pipe is connected below the water pump, and the tail end of the circulating water pipe is connected with a circulating water layer.
The water flow channel is favorable for transferring the heat energy absorbed by the metal film into the medium water, the water diversion pipe is favorable for circulating the medium water into the water collecting pipe, and the left water pump is favorable for circulating the water in the water collecting pipe into the left circulating water pipe and transmitting the water into the circulating water layer; the right water pump is favorable for pumping medium water in the circulating water layer back to the water collecting pipe through the right circulating water pipe and finally flows back to the water flow channel, so that heat energy transmission and storage are completed.
Preferably, the pebble layer comprises pebbles, a heat radiation port and a temperature sensor; the pebble is located inside the pebble layer, the heat dissipation openings are distributed in the outer side of the pebble layer, a fan is arranged behind the heat dissipation openings, a temperature sensor is arranged above the heat dissipation openings, and the temperature sensor is electrically connected with the heat dissipation openings and the fan.
The pebbles are favorable for storing heat, the heat dissipation ports are favorable for dissipating heat, and the heat dissipation efficiency in the pebble layer can be increased after the fan is started. The temperature sensor is favorable for monitoring the temperature in the sunlight greenhouse, the fan and the heat dissipation opening are opened for heat dissipation when the temperature is too low, and the fan and the heat dissipation opening are closed for heat dissipation when the temperature is proper.
Preferably, a plurality of gap adjusting devices are arranged among the pebbles, which is beneficial to adjusting the gaps among the pebbles and changing the heat conduction efficiency of the pebbles.
Preferably, the gap adjusting device comprises a motor, a first transmission rod and a spiral sheet; the motor is connected with a driving shaft, the driving shaft is connected with a first reduction gear, a second reduction gear is meshed above the first reduction gear, and the rotating speed of the motor is reduced through the first reduction gear and the second reduction gear. The first transmission rod is connected with the two reduction gears, and a plurality of spiral sheets are arranged on the first transmission rod. The motor drives the first transmission rod to rotate, so that the spiral sheet is driven to rotate. When the first transmission rod on the left side rotates clockwise, the spiral piece rotates to drive the pebbles to gather on the left side, so that gaps among the pebbles are reduced, and the heat conductivity of the pebbles is reduced; when the first transmission rod on the left side rotates anticlockwise, the spiral sheets rotate to drive the pebbles to disperse to the right side, and finally, gaps among the pebbles are enlarged, and the heat conductivity of the pebbles is increased. The effect of the rotation of the first transmission rod on the right side is opposite to that on the left side.
Preferably, a plurality of pickers are arranged on the spiral sheet. The friction force between the spiral slice and the pebbles is increased by the ram, so that the pebbles are driven to be dispersed or aggregated.
Preferably, the clearance adjusting device comprises a hydraulic push rod, a second transmission rod and a branch; the hydraulic push rod is electrically connected with the power supply, one side of the hydraulic push rod is connected with a second transmission rod, and the hydraulic push rod drives the second transmission rod to reciprocate. The second transmission rod is provided with a plurality of branches, and the branches drive pebbles to move.
Preferably, the included angle formed by the extension direction of the second transmission rod and the branch is an acute angle. When the second transmission rod moves towards each other, the acute angle is favorable for gathering pebbles so as to reduce gaps of the pebbles; when the second transmission rod moves back, the obtuse angle is favorable for dispersing pebbles to enlarge the gap of the pebbles
Compared with the prior art, the invention has the beneficial effects that:
1. the invention is provided with the honeycomb heat absorption layer, the metal film is arranged in the concave surface of the honeycomb, the heat energy is accumulated in the concave surface of the honeycomb by utilizing the honeycomb structure of the concave surface, and the accumulated heat energy is not easy to be blown away by wind when the sunlight greenhouse is ventilated, thereby being beneficial to increasing the heat absorption efficiency of the single metal film, reducing the use area of the metal film and saving the cost. And secondly, the metal film is not easy to damage, can be used for a long time, and has more remarkable heating effect compared with a transparent film and a black film.
2. The invention combines the water circulation heat conduction and heat accumulation of the metal film medium with the heat conduction of the pebble layer; the heat energy stored in the concave honeycomb surface can be absorbed by the metal film and stored in the circulating water layer, and can be absorbed by the convex honeycomb surface connected with the concave honeycomb surface and stored in the pebble layer. The honeycomb convex surface and the honeycomb concave surface are arranged at intervals, the area utilization rate can be maximized due to the regular hexagon shape, the honeycomb convex surface can absorb the heat energy which is not completely absorbed by the honeycomb concave surface, so that the collected heat energy is fully utilized, and the utilization rate of the heat energy in the honeycomb concave surface is improved. The pebble layer is used for heating to assist the metal film in heating, so that the size of the reservoir is reduced, the cost for building the reservoir is reduced, and the land area utilization rate is improved.
3. The gap adjusting device is arranged to adjust gaps among pebbles, the gaps among pebbles are enlarged, heat release is facilitated, the gaps among pebbles are reduced, heat preservation is facilitated, and therefore the heat conduction rate of the pebble layer is changed, and the heat conduction rate of the pebble layer can be determined according to the night temperature of a sunlight greenhouse and whether a metal film emits heat or not. When the metal film still radiates heat and the temperature in the greenhouse is proper, gaps among pebbles are reduced, the heat conduction efficiency of the pebbles is reduced, and a fan and a radiating port are closed if necessary, so that the heat energy in the pebbles is prevented from radiating too quickly; when the heat energy emitted by the metal film is insufficient to maintain the proper temperature of the greenhouse, gaps among pebbles are increased, and the heat conduction efficiency of the pebbles is increased so as to maintain the proper temperature of the sunlight greenhouse.
Drawings
FIG. 1 is a schematic diagram of a solar greenhouse metal film heat collecting and releasing device in a three-dimensional structure;
FIG. 2 is a schematic diagram of the front perspective structure of a honeycomb heat absorption layer, pebble layer and heat preservation layer of a solar greenhouse metal film heat collecting and releasing device;
FIG. 3 is a schematic view showing a honeycomb convex cross-section structure of a solar greenhouse metal film heat collecting and releasing device;
FIG. 4 is a schematic diagram of a back pipe connection three-dimensional structure of a honeycomb heat absorption layer, a pebble layer and a heat preservation layer of a solar greenhouse metal film heat collecting and releasing device;
FIG. 5 is a schematic diagram of a metal film channel connection structure of a solar greenhouse metal film heat collecting and releasing device;
FIG. 6 is a schematic diagram of the connection structure of a water collecting pipe, a water pump and a circulating water pipe of the metal film heat collecting and releasing device of the solar greenhouse;
FIG. 7 is a schematic view showing the structure of a gap adjusting device of a metal film heat collecting and releasing device for a solar greenhouse according to a first embodiment of the invention;
FIG. 8 is a schematic view of a gap adjusting device for a solar greenhouse metal film heat collecting and releasing device according to a second embodiment of the invention.
Reference numerals in the drawings: 1. a rear slope; 2. a wall body; 3. a canopy surface; 4. a soil layer; 5. a thermal insulation layer; 6. circulating the water layer; 7. a honeycomb heat absorption layer; 8. a concave honeycomb surface; 9. a metal film; 10. a convex honeycomb surface; 10-1, a heat absorption fan; 10-2, a heat absorption channel; 10-3, heat preservation wall; 10-4, heat transfer channels; 11. a heat preservation layer; 12. a pebble layer; 13. a heat radiation port; 14. a temperature sensor; 15. a motor; 16. a drive shaft; 17. a first reduction gear; 18. a reduction gear II; 19. a first transmission rod; 20. a spiral sheet; 21. a power supply; 22. a hydraulic push rod; 23. a second transmission rod; 24. branching; 25. a water flow passage; 26. a water diversion pipe; 27. a water collecting pipe; 28. a water pump; 29. a circulating water pipe; 30. and (5) a ram.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Embodiment one: as shown in fig. 1-7, a solar greenhouse metal film heat collecting and releasing device is characterized in that: comprises a back slope 1, a wall body 2 and a canopy surface 3; a wall body 2 is connected below the rear slope 1, and the wall body 2 is used for absorbing heat energy in daytime; the front of the rear slope 1 is connected with a canopy surface 3, and the canopy surface 3 is transparent and can accommodate sunlight to irradiate on planted crops; a soil layer 4 is arranged below the greenhouse surface 3 and is used for planting crops; the soil layer 4 below is equipped with insulating layer 5 for circulation water layer 6 better heat-retaining prevents that heat energy from giving out some from circulation water layer 6, can separate heat energy simultaneously, thereby prevents that soil layer 4 below temperature from being too high from influencing crops growth. A circulating water layer 6 is arranged below the heat insulation layer 5.
The wall body 2 comprises a honeycomb heat absorption layer 7, a heat preservation layer 11 and a pebble layer 12; the honeycomb heat absorption layer 7 is positioned in front of the wall body 2 and is used for absorbing a large amount of heat in the daytime; the pebble layer 12 is positioned below the honeycomb heat absorption layer 7 and is used for storing heat absorbed by the wall body 2; the heat preservation layer 11 is positioned behind the honeycomb heat absorption layer 7 and the pebble layer 12 and is used for storing heat by the honeycomb heat absorption layer 7 and the pebble layer 12; the clay bricks are arranged behind the heat preservation layer 11 and used for bearing the weight of the wall body 2 and preventing the sunlight greenhouse from collapsing due to overweight of the wall body 2; the honeycomb heat absorption layer 7 is provided with a honeycomb concave surface 8 and a honeycomb convex surface 10, the concave surface structure of the honeycomb concave surface 8 is used for gathering heat energy into the concave surface structure, and the gathered heat energy is not easy to be blown away by wind when the sunlight greenhouse is ventilated. The convex honeycomb surface 10 is advantageous for absorbing heat energy in the concave honeycomb surface 8. The honeycomb concave surfaces 8 and the honeycomb convex surfaces 10 are arranged in a staggered manner, the metal films 9 are arranged in the honeycomb concave surfaces 8, the metal films 9 are not easy to damage, the honeycomb concave surfaces can be used for a long time, the heat energy can be absorbed, and compared with the transparent films and the black films, the honeycomb concave surfaces 8 have more remarkable heating effect.
The honeycomb convex surface 10 is of a hollow structure, and a heat absorbing fan 10-1 is arranged around the honeycomb convex surface 10 and used for absorbing heat energy in the honeycomb concave surface 8 into the hollow structure of the honeycomb convex surface 10. The honeycomb convex surface 10 is internally provided with a heat absorption channel 10-2, the outer side of the heat absorption channel 10-2 is provided with a heat preservation wall 10-3, the heat absorption channel 10-2 is a pipeline for transferring heat to the heat transfer channel 10-4, the heat absorption channel 10-2 is connected with the heat absorption fan 10-1, the heat absorption channel 10-2 is mutually converged in the heat transfer channel 10-4, and the heat transfer channel 10-4 is communicated with the pebble layer 12 and is used for transferring heat into the pebble layer 12.
A water flow passage 25 is arranged in the metal film 9 and is used for absorbing heat energy by the metal film 9 and transmitting the heat energy into medium water; the same-row water flow passage 25 is connected with a water diversion pipe 26, a plurality of water diversion pipes 26 are connected with a water collecting pipe 27, a branch water pipe below the water collecting pipe 27 is connected with a water pump 28, a circulating water pipe 29 is connected below the water pump 28, and the tail end of the circulating water pipe 29 is connected with a circulating water layer 6. The left water pump 28 is beneficial to circulating the water in the water collecting pipe 27 into the left circulating water pipe 29 and transmitting the water into the circulating water layer 6; the right water pump 28 is favorable for pumping the medium water in the circulating water layer 6 back to the water collecting pipe 27 through the right circulating water pipe 29 and finally flows back to the water flow channel 25 so as to finish the transmission and storage of heat energy.
The pebble layer 12 comprises pebbles, a heat radiation port 13 and a temperature sensor 14; pebbles are located inside the pebble layer 12 for storing heat; the heat dissipation openings 13 are distributed on the outer side of the pebble layer 12 and used for dissipating heat; a fan is arranged behind the heat dissipation opening 13, so that the heat dissipation efficiency in the pebble layer 12 can be increased; a temperature sensor 14 is arranged above the heat radiation opening 13, and the temperature sensor 14 is electrically connected with the heat radiation opening 13 and the fan. The temperature sensor 14 is beneficial to monitoring the temperature in the sunlight greenhouse, and is used for opening the fan and the cooling port 13 to dissipate heat when the temperature is too low, and closing the fan and the cooling port 13 to stop heat dissipation when the temperature is proper.
And a plurality of gap adjusting devices are arranged among the pebbles and are used for adjusting gaps among the pebbles and changing the heat conduction efficiency of the pebbles. When the metal film still radiates heat and the temperature in the greenhouse is proper, gaps among pebbles are reduced, the heat conduction efficiency of the pebbles is reduced, and if necessary, the fan and the radiating opening 13 are closed, so that the heat energy in the pebble layer 12 is prevented from radiating too quickly; when the heat energy emitted by the metal film is insufficient to maintain the proper temperature of the greenhouse, gaps among pebbles are increased, and the heat conduction efficiency of the pebbles is increased so as to maintain the proper temperature of the sunlight greenhouse.
The gap adjusting device comprises a motor 15, a first transmission rod 19 and a spiral piece 20; the motor 15 is connected with a driving shaft 16, the motor 15 provides the energy for the movement of the first transmission rod 19, and the driving shaft 16 is used for connecting the motor 15 and the first transmission rod 19; the driving shaft 16 is connected with a first reduction gear 17, and a second reduction gear 18 is meshed above the first reduction gear 17; in order to reduce the frequency of the movement of the motor 15, a first reduction gear 17 and a second reduction gear 18 are arranged, and the rotation speed ratio is 6:1; the first transmission rod 19 is connected with the second reduction gear 18, and a plurality of spiral sheets 20 are arranged on the first transmission rod 19. The motor 15 rotates the first transmission rod 19, thereby rotating the spiral 20. When the first transmission rod 19 on the left side rotates clockwise, the spiral piece 20 rotates to drive the pebbles to gather towards the left side, so that gaps among the pebbles are reduced, and the heat conductivity of the pebbles is reduced; when the first driving rod 19 on the left side rotates counterclockwise, the spiral piece 20 rotates to drive the pebbles to disperse to the right side, and finally the gap between the pebbles is enlarged, and the heat conductivity of the pebbles is increased. The effect of the rotation of the first transmission rod 19 on the right side is opposite to that on the left side.
The screw sheet 20 is provided with a plurality of ram rods 30. The ram 30 increases the friction between the flight 20 and the pebbles, which is beneficial to drive the pebbles to disperse or aggregate.
Embodiment two: as shown in fig. 8, the main difference from the first technical solution is that the implementation method of the gap adjusting device in the pebble layer 12 is different, and the gap adjusting device comprises a hydraulic push rod 22, a second transmission rod 23 and a branch 24; the hydraulic push rod 22 is electrically connected with the power supply 21, and the power supply 21 is used for providing electric energy for the hydraulic push rod 22; the right side of the hydraulic push rod 22 is connected with a second transmission rod 23, and the second transmission rod 23 moves back and forth under the drive of the hydraulic push rod 22. The second transmission rod 23 is provided with a plurality of branches 24, and the branches drive pebbles to move when the second transmission rod 23 moves back and forth.
The second transmission rod 23 extends in an acute angle with the branch 24. . When the second transmission rod 23 moves towards each other, the acute angle is favorable for gathering pebbles to reduce gaps of the pebbles, and finally, the heat conduction efficiency of the pebbles is reduced; when the second transmission rod 23 moves back, the obtuse angle is favorable for dispersing the pebbles to increase the gaps of the pebbles, and finally, the heat conduction efficiency of the pebbles is increased.
Working principle: when in use, the honeycomb heat absorption layer 7 on the wall body 2 absorbs heat; the honeycomb concave surfaces 8 and the honeycomb convex surfaces 10 are arranged in a staggered manner, the concave surface structures of the honeycomb concave surfaces 8 are used for collecting heat energy into the concave surface structures, the metal films 9 absorb the heat energy collected in the honeycomb concave surfaces 8, and the honeycomb convex surfaces 10 are beneficial to absorbing the heat energy left in the honeycomb concave surfaces 8. After the metal film 9 absorbs the heat energy, the water flow passage 25 in the metal film transfers the heat energy to the medium water, and the medium water flows into the water diversion pipe 26 and the water collection pipe 27 in turn. Then the left water pump 28 operates to circulate the medium water in the water collecting pipe 27 to the left circulating water pipe 29 and to transmit the medium water into the circulating water layer 6; the right water pump 28 operates to pump the medium water in the circulating water layer 6 back to the water collecting pipe 27 through the right circulating water pipe 29 and finally to flow back to the water flow channel 25 to complete heat energy transmission and storage. While the metal film 9 absorbs heat energy, the heat absorbing fan 10-1 absorbs the heat energy remaining in the honeycomb concave surface 8 into the hollow structure of the honeycomb convex surface 10, and sequentially stores the heat energy into the pebble layer 12 through the heat absorbing channel 10-2 and the heat transferring channel 10-4. At night, when the temperature in the sunlight is too low, the circulation between the metal film 9 and the circulating water layer 6 is started, and the heat energy in the medium water is conducted to the metal film 9, so that the temperature in the sunlight greenhouse is increased. At the same time, the temperature sensor 14 monitors the temperature within the solar greenhouse. When the temperature in the sunlight greenhouse is too low, a fan and a heat dissipation port 13 in the pebble layer 12 are automatically opened to dissipate heat into the greenhouse, so that the night temperature of the sunlight greenhouse is increased; when the temperature in the sunlight greenhouse reaches the proper temperature, the fan and the heat dissipation opening 13 are automatically closed, and the pebble layer 12 stops radiating heat to the interior of the sunlight greenhouse. In the process of emitting temperature of the pebble layer 12, a gap adjusting device is arranged among pebbles in the pebble layer 12, so that gaps among the pebbles can be adjusted, and the heat conduction efficiency of the pebbles is changed. When the metal film still radiates heat and the temperature in the greenhouse is proper, gaps among pebbles are reduced, the heat conduction efficiency of the pebbles is reduced, and if necessary, the fan and the radiating opening 13 are closed, so that the heat energy in the pebble layer 12 is prevented from radiating too quickly; when the heat energy emitted from the metal film 9 is insufficient to maintain the proper temperature of the greenhouse, the gap between the pebbles is increased, and the heat conduction efficiency of the pebbles is increased, so that the proper temperature of the sunlight greenhouse is maintained.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (1)
1. A solar greenhouse metal film heat collecting and releasing device comprises a back slope (1), a wall body (2) and a greenhouse surface (3); the novel water-saving type water-saving device is characterized in that a wall body (2) is connected below the rear slope (1), a canopy surface (3) is connected in front of the rear slope (1), a soil layer (4) is arranged below the canopy surface (3), a heat-insulating layer (5) is arranged below the soil layer (4), and a circulating water layer (6) is arranged below the heat-insulating layer (5);
the wall body (2) comprises a honeycomb heat absorption layer (7), a heat preservation layer (11) and a pebble layer (12); the honeycomb heat absorption layer (7) is positioned in front of the wall body (2), the pebble layer (12) is positioned below the honeycomb heat absorption layer (7), the heat preservation layer (11) is positioned behind the honeycomb heat absorption layer (7) and the pebble layer (12), and clay bricks are arranged behind the heat preservation layer (11); the honeycomb heat absorption layer (7) is provided with a honeycomb concave surface (8) and a honeycomb convex surface (10), the honeycomb concave surface (8) and the honeycomb convex surface (10) are arranged in a staggered manner, and a metal film (9) is arranged in the honeycomb concave surface (8);
the honeycomb convex surface (10) is of a hollow structure, a heat absorbing fan (10-1) is arranged around the honeycomb convex surface (10), a heat absorbing channel (10-2) is arranged inside the honeycomb convex surface (10), a heat insulating wall (10-3) is arranged outside the heat absorbing channel (10-2), the heat absorbing channel (10-2) is connected with the heat absorbing fan (10-1), the heat absorbing channel (10-2) is mutually converged in a heat transfer channel (10-4), and the heat transfer channel (10-4) is communicated with the pebble layer (12);
the pebble layer (12) comprises pebbles, a heat radiation port (13) and a temperature sensor (14); the pebble is positioned in the pebble layer (12), the heat dissipation openings (13) are distributed on the outer side of the pebble layer (12), a fan is arranged behind the heat dissipation openings (13), a temperature sensor (14) is arranged above the heat dissipation openings (13), and the temperature sensor (14) is electrically connected with the heat dissipation openings (13) and the fan;
a plurality of gap adjusting devices are arranged among the pebbles;
the gap adjusting device comprises a motor (15), a first transmission rod (19) and a spiral piece (20); the motor (15) is connected with a driving shaft (16), the driving shaft (16) is connected with a first reduction gear (17), a second reduction gear (18) is meshed above the first reduction gear (17), a first transmission rod (19) is connected with the second reduction gear (18), and a plurality of spiral sheets (20) are arranged on the first transmission rod (19);
the spiral sheet (20) is provided with a plurality of pickers (30);
the gap adjusting device comprises a hydraulic push rod (22), a second transmission rod (23) and a branch (24); the hydraulic push rod (22) is electrically connected with the power supply (21), one side of the hydraulic push rod (22) is connected with a second transmission rod (23), and a plurality of branches (24) are arranged on the second transmission rod (23);
an included angle formed by the extension direction of the second transmission rod (23) and the branch (24) is an acute angle.
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| CN202111077036.6A CN113875448B (en) | 2020-06-02 | 2020-06-02 | Solar greenhouse metal film heat collecting and releasing device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111077036.6A CN113875448B (en) | 2020-06-02 | 2020-06-02 | Solar greenhouse metal film heat collecting and releasing device |
| CN202010489654.0A CN111587710B (en) | 2020-06-02 | 2020-06-02 | Sunlight greenhouse metal film heat collecting and releasing device |
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| CN202010489654.0A Division CN111587710B (en) | 2020-06-02 | 2020-06-02 | Sunlight greenhouse metal film heat collecting and releasing device |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN113875448A (en) | 2022-01-04 |
| CN111587710A (en) | 2020-08-28 |
| CN111587710B (en) | 2021-09-21 |
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