CN104488609A - Temperature-difference regulating system for agricultural greenhouse - Google Patents
Temperature-difference regulating system for agricultural greenhouse Download PDFInfo
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- CN104488609A CN104488609A CN201410711851.7A CN201410711851A CN104488609A CN 104488609 A CN104488609 A CN 104488609A CN 201410711851 A CN201410711851 A CN 201410711851A CN 104488609 A CN104488609 A CN 104488609A
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- heat
- accumulation
- oil
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- oil return
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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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- 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
- A01G9/241—Arrangement of opening or closing systems for windows and ventilation panels
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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
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P60/00—Technologies relating to agriculture, livestock or agroalimentary industries
- Y02P60/12—Technologies relating to agriculture, livestock or agroalimentary industries using renewable energies, e.g. solar water pumping
Abstract
The invention provides a temperature-difference regulating system for an agricultural greenhouse, and relates to a temperature regulating device for an agricultural greenhouse. The temperature-difference regulating system for an agricultural greenhouse consists of a solar heat collector, a heat storage cylinder, a hot-oil circulating pipe, a return-oil circulating pipe, a warm-air pipe, a return-air pipe, a heat-storage oil tank and an oil circulating pump, wherein the hot-oil outlet of the solar heat collector is connected to a hot-oil inlet interface of a heat exchanging coil, and the return-oil outlet interface of the heat exchanging coil is connected to a return-oil inlet which is connected to the solar heat collector through the return-oil circulating pipe; the return-oil circulating outlet of the heat-storage oil tank is connected to the rear end of the return-oil circulating pipe, the hot-oil circulating inlet of the heat-storage oil tank is connected to the hot-oil circulating pipe, the heat-storage oil outlet interface of the heat-storage oil tank is connected to the inlet of the oil circulating pump, and the outlet of the oil circulating pump is connected to the front end of the return-oil circulating pipe; the warm-air pipe is mounted at the lower end of the heat storage cylinder, and the return-air pipe is mounted at the upper end of the heat storage cylinder. The temperature-difference regulating system for the agricultural greenhouse stores the heat of solar energy by utilizing the heat-storage oil tank with the heat storage cylinder, so that the time of heat emission of a heat-storage wall body is prolonged, and the temperature-difference regulating capability of the system is enhanced.
Description
Technical field
The present invention relates to a kind of agricultural production equipment, be related specifically to a kind of agricultural greenhouse weather adjustment device.
Background technology
Agricultural greenhouse is a kind of framework structure of film with heat-insulating property, and its appearance makes people can have vegetables in improper season and fruit.General agricultural greenhouse uses the skeleton of bamboo structure or steel construction, is covered with one or more layers thermal insulation plastic film above, material is thus formed a greenhouse space.The loss of the carbonic acid gas that adventitia stops inner vegetable growth to produce well, makes to have good heat insulation effect in canopy.
When having sunlight daytime, the temperature in agricultural greenhouse is very high, and to night, is subject to the impact of environment temperature reduction, and the temperature in booth is too low again, and day and night temperature is very large, and unfavorable fruits and vegetables growth, affects fruit-vegetable quality and output.
Summary of the invention
The object of the invention is to make up the large defect of existing agricultural greenhouse day and night temperature, a kind of agricultural greenhouse temperature difference regulating system is provided, when having sunlight by day, the heat storage of solar energy in storage heater, when night, canopy temperature reduced, storage heater releases heat gradually, reduce the cooling extent in booth, day and night temperature in booth is reduced, builds the environment of favourable fruits and vegetables growth, improve fruit-vegetable quality and output.
A kind of agricultural greenhouse temperature difference regulating system of the present invention, it is characterized in that temperature difference regulating system forms primarily of solar thermal collector (3), accumulation of heat cylinder (11), Circulation and Hot Oil Spray pipe (2), oil return circulation pipe (6), warm-air pipe (10), backwind tube (12), accumulation of heat fuel tank (1) and oil circulating pump (9), wherein, solar thermal collector (3) is through straight-through structure, there is hot oil outlet (3-1) upper end of solar thermal collector (3), and there is oil return import (3-6) lower end of solar thermal collector (3); Accumulation of heat cylinder (11) is made up of columnar accumulation of heat body of wall (11-5) and heat exchange coil (11-7), heat exchange coil (11-7) is placed in accumulation of heat body of wall (11-5), the upper end of heat exchange coil (11-7) has deep fat input interface (11-9) to access, the lower end of heat exchange coil (11-7) has oil return output interface (11-1) to pick out, and the interior space of accumulation of heat body of wall (11-5) forms heat exchange chamber (II); The bottom of accumulation of heat fuel tank (1) has oil return loop exit (1-6) to pick out, and the middle part of accumulation of heat fuel tank (1) has Circulation and Hot Oil Spray entrance (1-5) to access, and the top of accumulation of heat fuel tank (1) has accumulation of heat oil output interface (1-2) to pick out; The hot oil outlet (3-1) of solar thermal collector (3) upper end is connected to the deep fat input interface (11-9) of heat exchange coil (11-7) upper end by Circulation and Hot Oil Spray pipe (2), the oil return output interface (11-1) of heat exchange coil (11-7) lower end is connected to the front end of oil return circulation pipe (6), and the rear end of oil return circulation pipe (6) is connected to the oil return import (3-6) of solar thermal collector (3) lower end; The oil return loop exit (1-6) of accumulation of heat fuel tank (1) bottom is connected to the position, rear end of oil return circulation pipe (6) by oil return pipe (4), the Circulation and Hot Oil Spray entrance (1-5) at accumulation of heat fuel tank (1) middle part is connected on Circulation and Hot Oil Spray pipe (2), accumulation of heat oil output interface (1-2) on accumulation of heat fuel tank (1) top is connected to the import of oil circulating pump (9), and the outlet of oil circulating pump (9) is connected to the position, front end of oil return circulation pipe (6); Warm-air pipe (10) is arranged on the lower end of accumulation of heat cylinder (11), and backwind tube (12) is arranged on the upper end of accumulation of heat cylinder (11), and backwind tube (12) is communicated to warm-air pipe (10) by the heat exchange chamber (II) in accumulation of heat body of wall (11-5); During use, solar thermal collector (3) take conduction oil as heat carrier, and the solar heat of collecting is stored in accumulation of heat cylinder (11) and accumulation of heat fuel tank (1).
In the present invention, solar thermal collector (3) is by upper end (3-2), thermal-collecting tube (3-3), glass tube (3-4) and lower end (3-5) are formed, thermal-collecting tube (3-3) is arranged in the interior space of glass tube (3-4), upper end (3-2) is in the upper end of thermal-collecting tube (3-3) and glass tube (3-4), lower end (3-5) is in the lower end of thermal-collecting tube (3-3) and glass tube (3-4), hot oil outlet (3-1) is on upper end (3-2), oil return import (3-6) is on lower end (3-5), oil return import (3-6) is communicated to hot oil outlet (3-1) by the interior space of thermal-collecting tube (3-3), accumulation of heat body of wall (11-5) inwall of accumulation of heat cylinder (11) has vent rib (11-4), and vent rib (11-4) ringwise layout is evenly distributed in heat exchange chamber (II), muff (11-6) is had at accumulation of heat body of wall (11-5) skin of accumulation of heat cylinder (11), heat-insulation layer (1-8) is had at the skin of accumulation of heat fuel tank (1), return air input interface (11-8) is had in the upper end of accumulation of heat cylinder (11), the end of backwind tube (12) is connected on return air input interface (11-8), air door (13) is had in the position of backwind tube (12) end, the air inlet of backwind tube (12) picks out in agricultural greenhouse, and the air inlet of backwind tube (12) has circulating fan, have hot blast output interface (11-2) in the lower end of accumulation of heat cylinder (11), warm-air pipe (10) is connected on hot blast output interface (11-2), and the air outlet of warm-air pipe (10) is linked in agricultural greenhouse, connecting pipe between accumulation of heat oil output interface (1-2) and oil circulating pump (9) import of accumulation of heat fuel tank (1) there is electromagnetic valve (7), oil return circulation pipe (6) has electromagnet cut off valve (8), and electromagnet cut off valve (8) is arranged between the access section of oil circulating pump (9) and the access section of solar thermal collector (3) and oil return pipe (4), in accumulation of heat fuel tank (1), have accumulation of heat sand (1-4), in order to prevent sand material from entering in pipeline, the Circulation and Hot Oil Spray entrance (1-5) of accumulation of heat fuel tank (1), oil return loop exit (1-6) and accumulation of heat oil output interface (1-2) respectively have filter in word, solar thermal collector (3) is more than one, and many solar thermal collectors (3) are arranged between Circulation and Hot Oil Spray pipe (2) and oil return circulation pipe (6) with parallel way, accumulation of heat cylinder (11) is more than one, and the heat exchange coil (11-7) in many accumulation of heat cylinders (11) is arranged between Circulation and Hot Oil Spray pipe (2) and oil return circulation pipe (6) with parallel way, when accumulation of heat cylinder (11) is arranged for many, the end of backwind tube (12) has air outlet along separate routes, warm-air pipe (10) there is air inlet along separate routes, the upper end of accumulation of heat cylinder (11) is arranged on parallel way on the shunt air outlet of backwind tube (12), and the lower end of accumulation of heat cylinder (11) is arranged on the shunt air inlet of warm-air pipe (10) with parallel way.During concrete enforcement, the accumulation of heat body of wall (11-5) of accumulation of heat cylinder (11) selects refractory concrete or cast iron materials; Accumulation of heat sand (1-4) selects quartz sand material; Electromagnetic valve (7) selects the magnetic valve of normally closed structure; Electromagnet cut off valve (8) selects the magnetic valve of normal opening structure.
The present invention applies on agricultural greenhouse, on the daytime having sunlight, the heat storage of the sun in accumulation of heat cylinder (11), when mercury dropped at night, from accumulation of heat cylinder (11), release heat gradually in booth again, to reduce the cooling extent in booth, day and night temperature in booth is reduced, build the environment of favourable fruits and vegetables growth, improve fruit-vegetable quality and output.When the present invention uses, conduction oil is added by accumulation of heat fuel tank (1), get rid of air in the circulation line of solar thermal collector (3), heat exchange coil (11-7) and conduction oil, conduction oil is made to be full of the interior space of thermal-collecting tube (3-3), heat exchange coil (11-7), Circulation and Hot Oil Spray pipe (2), oil return circulation pipe (6), oil return pipe (4) and hot oil transfer pipe (5), and the oil level in accumulation of heat fuel tank (1), higher than accumulation of heat oil output interface (1-2), makes accumulation of heat sand (1-4) all be immersed in conduction oil.When there being sunlight, solar thermal collector receives the radiations heat energy of the sun, oil plant in thermal-collecting tube (3-3) is heated up, according to gravity circulation principle, oil plant carries out ascending motion after heating up, heat exchange coil (11-7) and accumulation of heat fuel tank (1) is entered into by Circulation and Hot Oil Spray pipe (2), deep fat passes to heat by the wall body of heat exchange coil (11-7) the accumulation of heat body of wall (11-5) of accumulation of heat cylinder (11), make accumulation of heat body of wall (11-5) and vent rib (11-4) intensification accumulation of heat, in accumulation of heat fuel tank (1), deep fat makes accumulation of heat sand (1-4) intensification accumulation of heat, after oil plant in the thermal-collecting tube (3-3) of solar thermal collector (3) heats up and rises, just suck oil plant to supplement from lower end, so, the cold oil of heat exchange coil (11-7) bottom and the cold oil of accumulation of heat fuel tank (1) bottom just enter in thermal-collecting tube (3-3) by oil return circulation pipe (6) automatically, carry out circulating-heating, so go round and begin again, make the accumulation of heat body of wall (11-5) of accumulation of heat cylinder (11), accumulation of heat sand (1-4) in vent rib (11-4) and accumulation of heat fuel tank (1) and oil plant heat up accumulation of heat further, oil plant in accumulation of heat fuel tank (1) is become accumulation of heat oil (1-3) after backheat.Described conduction oil is also known as thermal medium oil, Chang Zuowei intermediate heat medium is applied in industrial heat exchange process, its serviceability temperature can reach more than 300 DEG C, application conduction oil is as heat medium, and make the heating-up temperature of accumulation of heat body of wall (11-5) and accumulation of heat sand (1-4) high, the heat capacity of storage is large, the time of heat release is long gradually, during accumulation of heat, close the air door (13) of backwind tube (12) end, avoid heat losses.Night, when mercury dropped in agricultural greenhouse, automatically the air door (13) of backwind tube (12) end and the circulating fan of backwind tube (12) air inlet end is opened by temperature detect switch (TDS), circulating air in agricultural greenhouse is entered into the heat exchange chamber (II) in accumulation of heat cylinder (11) by backwind tube (12), turn back in agricultural greenhouse by the air outlet of warm-air pipe (10) again, circulating air is in the process passing through heat exchange chamber (II), be subject to the thermal radiation of accumulation of heat body of wall (11-5) and vent rib (11-4) and heated, become hot blast (I), the bottom in agricultural greenhouse is entered into by the air outlet of warm-air pipe (10), in agricultural greenhouse, the air of upper position enters into the heat exchange chamber (II) in accumulation of heat cylinder (11) again by backwind tube (12) as return air, carry out circulating-heating, so go round and begin again, the heat that accumulation of heat body of wall (11-5) and vent rib (11-4) store to be exchanged in agricultural greenhouse in air gradually, reduce the cooling in booth, day and night temperature in booth is reduced.After the accumulation of heat body of wall (11-5) of accumulation of heat cylinder (11) and vent rib (11-4) are swapped out heat, to the motor of oil circulating pump (9), the coil of electromagnet cut off valve (8) and the coil of electromagnetic valve (7) are energized, electromagnet cut off valve (8) is closed, electromagnetic valve (7) is opened and is run with oil circulating pump (9), accumulation of heat oil (1-3) in accumulation of heat fuel tank (1) is sent in heat exchange coil (11-7) in a looping fashion, heat is passed to accumulation of heat body of wall (11-5) and vent rib (11-4), to maintain the heat capacity of accumulation of heat cylinder (11), the heat that in accumulation of heat fuel tank (1), accumulation of heat sand (1-4) stores will be carried on accumulation of heat oil (1-3) and heat will be passed to accumulation of heat body of wall (11-5) and vent rib (11-4).The present invention utilizes the collaborative accumulation of heat cylinder (11) of accumulation of heat fuel tank (1) to carry out storage solar heat, makes the Exotherm Time of accumulation of heat body of wall (11-5) and vent rib (11-4) longer, enhances the day and night temperature regulating power of system.
The invention has the beneficial effects as follows: a kind of agricultural greenhouse temperature difference regulating system provided, when having sunlight by day, the heat storage of solar energy in storage heater, when night, canopy temperature reduced, storage heater releases heat gradually, reduces the cooling extent in booth, day and night temperature in booth is reduced, build the environment of favourable fruits and vegetables growth, improve fruit-vegetable quality and output.The present invention utilizes the collaborative accumulation of heat cylinder (11) of accumulation of heat fuel tank (1) to carry out storage solar heat, makes the Exotherm Time of accumulation of heat body of wall (11-5) and vent rib (11-4) longer, enhances the day and night temperature regulating power of system.
Accompanying drawing explanation
Fig. 1 is the structure chart of a kind of agricultural greenhouse temperature difference regulating system of the present invention.
Fig. 2 is the A-A profile of Fig. 1.
In figure: 1. accumulation of heat fuel tank, 1-1. respiratory siphon, 1-2. accumulation of heat oil output interface, 1-3. accumulation of heat oil, 1-4. accumulation of heat sand, 1-5. Circulation and Hot Oil Spray entrance, 1-6. oil return loop exit, 1-7. filter, the heat-insulation layer of 1-8. accumulation of heat fuel tank, 2. Circulation and Hot Oil Spray pipe, 3. solar thermal collector, the hot oil outlet of 3-1. solar thermal collector, the upper end of 3-2. solar thermal collector, the thermal-collecting tube of 3-3. solar thermal collector, 3-4. glass tube, the lower end of 3-5. solar thermal collector, the oil return import of 3-6. sun energy heat collector, 4. oil return pipe, 5. hot oil transfer pipe, 6. oil return circulation pipe, 7. electromagnetic valve, 8. electromagnet cut off valve, 9. oil circulating pump, 10. warm-air pipe, 11. accumulation of heat cylinders, 11-1. oil return output interface, 11-2. hot blast output interface, the shell of 11-3. accumulation of heat cylinder, 11-4. vent rib, 11-5. accumulation of heat body of wall, the muff of 11-6. accumulation of heat cylinder, 11-7. heat exchange coil, 11-8. return air input interface, 11-9. deep fat input interface, 12. backwind tubes, 13. air doors, I. hot blast, II. heat exchange chamber, III. return air.
Embodiment
embodimentin embodiment shown in accompanying drawing 1, a kind of agricultural greenhouse temperature difference regulating system is primarily of solar thermal collector (3), accumulation of heat cylinder (11), Circulation and Hot Oil Spray pipe (2), oil return circulation pipe (6), warm-air pipe (10), backwind tube (12), accumulation of heat fuel tank (1) and oil circulating pump (9) composition, wherein, solar thermal collector (3) is through straight-through structure, solar thermal collector (3) is by upper end (3-2), thermal-collecting tube (3-3), glass tube (3-4) and lower end (3-5) are formed, thermal-collecting tube (3-3) is arranged in the interior space of glass tube (3-4), upper end (3-2) is in the upper end of thermal-collecting tube (3-3) and glass tube (3-4), lower end (3-5) is in the lower end of thermal-collecting tube (3-3) and glass tube (3-4), upper end (3-2) has hot oil outlet (3-1), lower end (3-5) has oil return import (3-6), oil return import (3-6) is communicated to hot oil outlet (3-1) by the interior space of thermal-collecting tube (3-3), accumulation of heat cylinder (11) is made up of columnar accumulation of heat body of wall (11-5) and heat exchange coil (11-7), heat exchange coil (11-7) is placed in accumulation of heat body of wall (11-5), the upper end of heat exchange coil (11-7) has deep fat input interface (11-9) to access, the lower end of heat exchange coil (11-7) has oil return output interface (11-1) to pick out, the interior space of accumulation of heat body of wall (11-5) forms heat exchange chamber (II), the inwall of accumulation of heat body of wall (11-5) has vent rib (11-4), vent rib (11-4) ringwise layout is evenly distributed in heat exchange chamber (II), muff (11-6) is had at the skin of accumulation of heat body of wall (11-5), return air input interface (11-8) is had in the upper end of accumulation of heat cylinder (11), hot blast output interface (11-2) is had in the lower end of accumulation of heat cylinder (11), the bottom of accumulation of heat fuel tank (1) has oil return loop exit (1-6) to pick out, the middle part of accumulation of heat fuel tank (1) has Circulation and Hot Oil Spray entrance (1-5) to access, the top of accumulation of heat fuel tank (1) has accumulation of heat oil output interface (1-2) to pick out, and has accumulation of heat sand (1-4) in accumulation of heat fuel tank (1), the Circulation and Hot Oil Spray entrance (1-5) of accumulation of heat fuel tank (1), oil return loop exit (1-6) and accumulation of heat oil output interface (1-2) respectively have filter in word, have heat-insulation layer (1-8) at the skin of accumulation of heat fuel tank (1), the hot oil outlet (3-1) of solar thermal collector (3) upper end is connected to the deep fat input interface (11-9) of heat exchange coil (11-7) upper end by Circulation and Hot Oil Spray pipe (2), the oil return output interface (11-1) of heat exchange coil (11-7) lower end is connected to the front end of oil return circulation pipe (6), and the rear end of oil return circulation pipe (6) is connected to the oil return import (3-6) of solar thermal collector (3) lower end, the oil return loop exit (1-6) of accumulation of heat fuel tank (1) bottom is connected to the position, rear end of oil return circulation pipe (6) by oil return pipe (4), the Circulation and Hot Oil Spray entrance (1-5) at accumulation of heat fuel tank (1) middle part is connected on Circulation and Hot Oil Spray pipe (2), accumulation of heat oil output interface (1-2) on accumulation of heat fuel tank (1) top is connected to the import of oil circulating pump (9), connecting pipe between accumulation of heat oil output interface (1-2) and oil circulating pump (9) import of accumulation of heat fuel tank (1) there is electromagnetic valve (7), the outlet of oil circulating pump (9) is connected to the position, front end of oil return circulation pipe (6), oil return circulation pipe (6) has electromagnet cut off valve (8), electromagnet cut off valve (8) is arranged between the access section of oil circulating pump (9) and the access section of solar thermal collector (3) and oil return pipe (4), the end of backwind tube (12) is connected on return air input interface (11-8), air door (13) is had in the position of backwind tube (12) end, the air inlet of backwind tube (12) picks out in agricultural greenhouse, the air inlet of backwind tube (12) there is circulating fan, warm-air pipe (10) is connected on hot blast output interface (11-2), backwind tube (12) is communicated to warm-air pipe (10) by the heat exchange chamber (II) in accumulation of heat body of wall (11-5), and the air outlet of warm-air pipe (10) is linked in agricultural greenhouse, during use, solar thermal collector (3) take conduction oil as heat carrier, and the solar heat of collecting is stored in accumulation of heat cylinder (11) and accumulation of heat fuel tank (1).In this enforcement, solar thermal collector (3) is more than one, and many solar thermal collectors (3) are arranged between Circulation and Hot Oil Spray pipe (2) and oil return circulation pipe (6) with parallel way; Accumulation of heat cylinder (11) is more than one, and the heat exchange coil (11-7) in many accumulation of heat cylinders (11) is arranged between Circulation and Hot Oil Spray pipe (2) and oil return circulation pipe (6) with parallel way; When accumulation of heat cylinder (11) is arranged for many, the end of backwind tube (12) has air outlet along separate routes, warm-air pipe (10) there is air inlet along separate routes, the upper end of accumulation of heat cylinder (11) is arranged on parallel way on the shunt air outlet of backwind tube (12), and the lower end of accumulation of heat cylinder (11) is arranged on parallel way on the shunt air inlet of warm-air pipe (10); The accumulation of heat body of wall (11-5) of accumulation of heat cylinder (11) selects refractory concrete or cast iron materials; Accumulation of heat sand (1-4) selects quartz sand material; Electromagnetic valve (7) selects the magnetic valve of normally closed structure; Electromagnet cut off valve (8) selects the magnetic valve of normal opening structure.
The present embodiment is applied on agricultural greenhouse, on the daytime having sunlight, the heat storage of the sun in accumulation of heat cylinder (11), when mercury dropped at night, from accumulation of heat cylinder (11), release heat gradually in booth again, to reduce the cooling extent in booth, day and night temperature in booth is reduced, build the environment of favourable fruits and vegetables growth, improve fruit-vegetable quality and output.When the present embodiment uses, conduction oil is added by accumulation of heat fuel tank (1), get rid of air in the circulation line of solar thermal collector (3), heat exchange coil (11-7) and conduction oil, conduction oil is made to be full of the interior space of thermal-collecting tube (3-3), heat exchange coil (11-7), Circulation and Hot Oil Spray pipe (2), oil return circulation pipe (6), oil return pipe (4) and hot oil transfer pipe (5), and the oil level in accumulation of heat fuel tank (1), higher than accumulation of heat oil output interface (1-2), makes accumulation of heat sand (1-4) all be immersed in conduction oil.When there being sunlight, solar thermal collector receives the radiations heat energy of the sun, oil plant in thermal-collecting tube (3-3) is heated up, according to gravity circulation principle, oil plant carries out ascending motion after heating up, heat exchange coil (11-7) and accumulation of heat fuel tank (1) is entered into by Circulation and Hot Oil Spray pipe (2), deep fat passes to heat by the wall body of heat exchange coil (11-7) the accumulation of heat body of wall (11-5) of accumulation of heat cylinder (11), make accumulation of heat body of wall (11-5) and vent rib (11-4) intensification accumulation of heat, in accumulation of heat fuel tank (1), deep fat makes accumulation of heat sand (1-4) intensification accumulation of heat, after oil plant in the thermal-collecting tube (3-3) of solar thermal collector (3) heats up and rises, just suck oil plant to supplement from lower end, so, the cold oil of heat exchange coil (11-7) bottom and the cold oil of accumulation of heat fuel tank (1) bottom just enter in thermal-collecting tube (3-3) by oil return circulation pipe (6) automatically, carry out circulating-heating, so go round and begin again, make the accumulation of heat body of wall (11-5) of accumulation of heat cylinder (11), accumulation of heat sand (1-4) in vent rib (11-4) and accumulation of heat fuel tank (1) and oil plant heat up accumulation of heat further, oil plant in accumulation of heat fuel tank (1) is become accumulation of heat oil (1-3) after backheat.In the present embodiment, application conduction oil, as heat medium, makes the heating-up temperature of accumulation of heat body of wall (11-5) and accumulation of heat sand (1-4) high, the heat capacity stored is large, and the time of heat release is long gradually, during accumulation of heat, close the air door (13) of backwind tube (12) end, avoid heat losses.Night, when mercury dropped in agricultural greenhouse, automatically the air door (13) of backwind tube (12) end and the circulating fan of backwind tube (12) air inlet end is opened by temperature detect switch (TDS), circulating air in agricultural greenhouse is entered into the heat exchange chamber (II) in accumulation of heat cylinder (11) by backwind tube (12), turn back in agricultural greenhouse by the air outlet of warm-air pipe (10) again, circulating air is in the process passing through heat exchange chamber (II), be subject to the thermal radiation of accumulation of heat body of wall (11-5) and vent rib (11-4) and heated, become hot blast (I), the bottom in agricultural greenhouse is entered into by the air outlet of warm-air pipe (10), in agricultural greenhouse, the air of upper position enters into the heat exchange chamber (II) in accumulation of heat cylinder (11) again by backwind tube (12) as return air, carry out circulating-heating, so go round and begin again, the heat that accumulation of heat body of wall (11-5) and vent rib (11-4) store to be exchanged in agricultural greenhouse in air gradually, reduce the cooling in booth, day and night temperature in booth is reduced.After the accumulation of heat body of wall (11-5) of accumulation of heat cylinder (11) and vent rib (11-4) are swapped out heat, to the motor of oil circulating pump (9), the coil of electromagnet cut off valve (8) and the coil of electromagnetic valve (7) are energized, electromagnet cut off valve (8) is closed, electromagnetic valve (7) is opened and is run with oil circulating pump (9), accumulation of heat oil (1-3) in accumulation of heat fuel tank (1) is sent in heat exchange coil (11-7) in a looping fashion, heat is passed to accumulation of heat body of wall (11-5) and vent rib (11-4), to maintain the heat capacity of accumulation of heat cylinder (11), the heat that in accumulation of heat fuel tank (1), accumulation of heat sand (1-4) stores will be carried on accumulation of heat oil (1-3) and heat will be passed to accumulation of heat body of wall (11-5) and vent rib (11-4).The present embodiment utilizes the collaborative accumulation of heat cylinder (11) of accumulation of heat fuel tank (1) to carry out storage solar heat, makes the Exotherm Time of accumulation of heat body of wall (11-5) and vent rib (11-4) longer, enhances the day and night temperature regulating power of system.
Claims (10)
1. an agricultural greenhouse temperature difference regulating system, it is characterized in that temperature difference regulating system forms primarily of solar thermal collector (3), accumulation of heat cylinder (11), Circulation and Hot Oil Spray pipe (2), oil return circulation pipe (6), warm-air pipe (10), backwind tube (12), accumulation of heat fuel tank (1) and oil circulating pump (9), wherein, solar thermal collector (3) is through straight-through structure, there is hot oil outlet (3-1) upper end of solar thermal collector (3), and there is oil return import (3-6) lower end of solar thermal collector (3); Accumulation of heat cylinder (11) is made up of columnar accumulation of heat body of wall (11-5) and heat exchange coil (11-7), heat exchange coil (11-7) is placed in accumulation of heat body of wall (11-5), the upper end of heat exchange coil (11-7) has deep fat input interface (11-9) to access, the lower end of heat exchange coil (11-7) has oil return output interface (11-1) to pick out, and the interior space of accumulation of heat body of wall (11-5) forms heat exchange chamber (II); The bottom of accumulation of heat fuel tank (1) has oil return loop exit (1-6) to pick out, and the middle part of accumulation of heat fuel tank (1) has Circulation and Hot Oil Spray entrance (1-5) to access, and the top of accumulation of heat fuel tank (1) has accumulation of heat oil output interface (1-2) to pick out;
The hot oil outlet (3-1) of solar thermal collector (3) upper end is connected to the deep fat input interface (11-9) of heat exchange coil (11-7) upper end by Circulation and Hot Oil Spray pipe (2), the oil return output interface (11-1) of heat exchange coil (11-7) lower end is connected to the front end of oil return circulation pipe (6), and the rear end of oil return circulation pipe (6) is connected to the oil return import (3-6) of solar thermal collector (3) lower end; The oil return loop exit (1-6) of accumulation of heat fuel tank (1) bottom is connected to the position, rear end of oil return circulation pipe (6) by oil return pipe (4), the Circulation and Hot Oil Spray entrance (1-5) at accumulation of heat fuel tank (1) middle part is connected on Circulation and Hot Oil Spray pipe (2), accumulation of heat oil output interface (1-2) on accumulation of heat fuel tank (1) top is connected to the import of oil circulating pump (9), and the outlet of oil circulating pump (9) is connected to the position, front end of oil return circulation pipe (6); Warm-air pipe (10) is arranged on the lower end of accumulation of heat cylinder (11), and backwind tube (12) is arranged on the upper end of accumulation of heat cylinder (11), and backwind tube (12) is communicated to warm-air pipe (10) by the heat exchange chamber (II) in accumulation of heat body of wall (11-5);
During use, solar thermal collector (3) take conduction oil as heat carrier, and the solar heat of collecting is stored in accumulation of heat cylinder (11) and accumulation of heat fuel tank (1).
2. a kind of agricultural greenhouse temperature difference regulating system according to claim 1, it is characterized in that solar thermal collector (3) is by upper end (3-2), thermal-collecting tube (3-3), glass tube (3-4) and lower end (3-5) are formed, thermal-collecting tube (3-3) is arranged in the interior space of glass tube (3-4), upper end (3-2) is in the upper end of thermal-collecting tube (3-3) and glass tube (3-4), lower end (3-5) is in the lower end of thermal-collecting tube (3-3) and glass tube (3-4), hot oil outlet (3-1) is on upper end (3-2), oil return import (3-6) is on lower end (3-5), oil return import (3-6) is communicated to hot oil outlet (3-1) by the interior space of thermal-collecting tube (3-3).
3. a kind of agricultural greenhouse temperature difference regulating system according to claim 1, it is characterized in that there is vent rib (11-4) on accumulation of heat body of wall (11-5) inwall of accumulation of heat cylinder (11), vent rib (11-4) ringwise layout is evenly distributed in heat exchange chamber (II).
4. a kind of agricultural greenhouse temperature difference regulating system according to claim 1, is characterized in that there is muff (11-6) at accumulation of heat body of wall (11-5) skin of accumulation of heat cylinder (11); Heat-insulation layer (1-8) is had at the skin of accumulation of heat fuel tank (1).
5. a kind of agricultural greenhouse temperature difference regulating system according to claim 1, it is characterized in that there is return air input interface (11-8) in the upper end of accumulation of heat cylinder (11), the end of backwind tube (12) is connected on return air input interface (11-8), air door (13) is had in the position of backwind tube (12) end, the air inlet of backwind tube (12) picks out in agricultural greenhouse, and the air inlet of backwind tube (12) has circulating fan; Have hot blast output interface (11-2) in the lower end of accumulation of heat cylinder (11), warm-air pipe (10) is connected on hot blast output interface (11-2), and the air outlet of warm-air pipe (10) is linked in agricultural greenhouse.
6. a kind of agricultural greenhouse temperature difference regulating system according to claim 1, is characterized in that there is electromagnetic valve (7) in the connecting pipe between accumulation of heat oil output interface (1-2) and oil circulating pump (9) import of accumulation of heat fuel tank (1).
7. a kind of agricultural greenhouse temperature difference regulating system according to claim 1, it is characterized in that there is electromagnet cut off valve (8) on oil return circulation pipe (6), electromagnet cut off valve (8) is arranged between the access section of oil circulating pump (9) and the access section of solar thermal collector (3) and oil return pipe (4).
8. a kind of agricultural greenhouse temperature difference regulating system according to claim 1, is characterized in that there is accumulation of heat sand (1-4) in accumulation of heat fuel tank (1); The Circulation and Hot Oil Spray entrance (1-5) of accumulation of heat fuel tank (1), oil return loop exit (1-6) and accumulation of heat oil output interface (1-2) respectively have filter in word.
9. a kind of agricultural greenhouse temperature difference regulating system according to claim 1, is characterized in that solar thermal collector (3) is more than one, and many solar thermal collectors (3) are arranged between Circulation and Hot Oil Spray pipe (2) and oil return circulation pipe (6) with parallel way.
10. a kind of agricultural greenhouse temperature difference regulating system according to claim 1, it is characterized in that accumulation of heat cylinder (11) is more than one, the heat exchange coil (11-7) in many accumulation of heat cylinders (11) is arranged between Circulation and Hot Oil Spray pipe (2) and oil return circulation pipe (6) with parallel way; When accumulation of heat cylinder (11) is arranged for many, the end of backwind tube (12) has air outlet along separate routes, warm-air pipe (10) there is air inlet along separate routes, the upper end of accumulation of heat cylinder (11) is arranged on parallel way on the shunt air outlet of backwind tube (12), and the lower end of accumulation of heat cylinder (11) is arranged on the shunt air inlet of warm-air pipe (10) with parallel way.
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| CN107318462A (en) * | 2017-07-20 | 2017-11-07 | 重庆市永川区绿秀菌业有限公司 | A kind of planting edible mushroom greenhouse |
| CN109084394A (en) * | 2018-08-22 | 2018-12-25 | 重庆大学 | A kind of fresh air preheating device |
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| CN104488609B (en) | 2016-08-17 |
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