CN114793711A - Phase change shutter temperature control device applied to plastic greenhouse and control method thereof - Google Patents
Phase change shutter temperature control device applied to plastic greenhouse and control method thereof Download PDFInfo
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- CN114793711A CN114793711A CN202210298177.9A CN202210298177A CN114793711A CN 114793711 A CN114793711 A CN 114793711A CN 202210298177 A CN202210298177 A CN 202210298177A CN 114793711 A CN114793711 A CN 114793711A
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- Prior art keywords
- phase change
- rope
- phase
- shutter
- lifting
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Classifications
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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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- 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
- A01G9/243—Collecting solar energy
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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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- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
- E06B9/24—Screens or other constructions affording protection against light, especially against sunshine; Similar screens for privacy or appearance; Slat blinds
- E06B9/26—Lamellar or like blinds, e.g. venetian blinds
- E06B9/28—Lamellar or like blinds, e.g. venetian blinds with horizontal lamellae, e.g. non-liftable
- E06B9/30—Lamellar or like blinds, e.g. venetian blinds with horizontal lamellae, e.g. non-liftable liftable
- E06B9/303—Lamellar or like blinds, e.g. venetian blinds with horizontal lamellae, e.g. non-liftable liftable with ladder-tape
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- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
- E06B9/24—Screens or other constructions affording protection against light, especially against sunshine; Similar screens for privacy or appearance; Slat blinds
- E06B9/26—Lamellar or like blinds, e.g. venetian blinds
- E06B9/28—Lamellar or like blinds, e.g. venetian blinds with horizontal lamellae, e.g. non-liftable
- E06B9/30—Lamellar or like blinds, e.g. venetian blinds with horizontal lamellae, e.g. non-liftable liftable
- E06B9/32—Operating, guiding, or securing devices therefor
- E06B9/322—Details of operating devices, e.g. pulleys, brakes, spring drums, drives
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
- E06B9/24—Screens or other constructions affording protection against light, especially against sunshine; Similar screens for privacy or appearance; Slat blinds
- E06B9/26—Lamellar or like blinds, e.g. venetian blinds
- E06B9/38—Other details
- E06B9/386—Details of lamellae
Abstract
The invention discloses a phase change shutter temperature control device applied to a plastic greenhouse and a control method thereof. The phase change shutter temperature control device comprises a rotating device, a lifting device and a phase change shutter plate; the rotating device consists of a rope winder, a fixed support, a rotating shaft, a worm wheel, a worm and ladder ropes on two sides, and is used for adjusting the angle of the phase-change louver board; the lifting device consists of a lifting rope and a rope lock and is used for controlling the lifting of the phase-change louver boards; the phase change louver board is composed of a polyvinyl chloride (PVC) board layer, a polystyrene (EPS) heat insulation layer and a phase change material layer from bottom to top in sequence. The invention has the beneficial effects that: by arranging the phase change shutter device, the problem of low temperature of the south plastic greenhouse at night in winter can be effectively solved, and the normal growth of plants is ensured; and the phase change shutter can meet the plant growth requirement by improving the solar energy utilization rate, effectively save energy and realize green production of the southern plastic greenhouse.
Description
Technical Field
The invention belongs to the technical field of plastic greenhouses, and particularly relates to a phase change shutter temperature control device applied to a plastic greenhouse and a control method thereof.
Background
At present, facility agriculture in China mainly takes a plastic greenhouse with low manufacturing cost and weak risk resistance, and the area of the plastic greenhouse is 126.24 ten thousand hm 2 Is occupied by67% of the total area of application. The temperature control of the plastic greenhouse is a necessary means for effectively saving energy and realizing green production of the greenhouse. The plastic greenhouse is mainly used for planting fruits and vegetables overwintering in the south, but due to the fact that the temperature is too low at night in winter, the growth temperature of vegetable plants is not suitable, the yield is influenced, and huge property loss of farmers is caused.
Compared with the traditional high-energy-consumption heating mode such as electric heating, the passive heat storage and release device is used for adjusting the indoor thermal environment of the plastic greenhouse by fully absorbing solar energy, so that the solar energy is transferred and utilized, and the energy utilization efficiency is improved, and the trend of green development of the modern agricultural greenhouse is reached.
A phase change material is a material that stores energy by changing its state. Compared with the traditional sensible heat energy storage, the device has the characteristics of large unit heat storage density, constant temperature, easy control and the like. In the process of changing the state of the material, a large amount of heat energy is absorbed and released, so that the indoor environment temperature can be well improved, and the indoor temperature is kept stable. The plastic greenhouse is a large arched greenhouse which completely uses a plastic film as a covering material, and plant illumination is not shielded when the phase change material is arranged. Therefore, how to apply the phase change material to the vinyl house and effectively control the temperature is a key problem.
Disclosure of Invention
In order to solve the problems, the invention provides a phase change shutter temperature control device applied to a plastic greenhouse and a regulation and control method thereof.
The technical scheme adopted by the invention for solving the technical problem is as follows: a phase change shutter temperature control device applied to a vinyl house and a control method thereof are provided.
The lifting device is connected with the phase-change louver boards through lifting ropes, and the rotating device is connected with the phase-change louver boards through pull ropes on two sides; the rotating device consists of a rope winder, a fixed support, a rotating shaft, a worm wheel, a worm and ladder ropes on two sides, and is used for adjusting the angle of the louver board; the lifting device consists of a lifting rope and a rope lock and controls the lifting of the louver boards; the phase-change louver board is composed of a polyvinyl chloride (PVC) board layer, a polystyrene (EPS) heat-insulation layer and a phase-change material layer from bottom to top in sequence.
Furthermore, the lifting device consists of three lifting ropes and rope locks, wherein one end of each lifting rope penetrates through the center of the phase-change louver board and is fixed at the bottom of the last phase-change louver board, the other end of each lifting rope penetrates through the holes below the three fixed supports and the rope locks at the same time to form a main rope which is used as a handle during lifting to control the lifting of the louver boards and mainly aims to realize dehumidification and ventilation of the greenhouse.
Furthermore, the rope lock consists of a fixed rolling shaft and a braking rolling shaft, the lifting of the lifting rope can be controlled, when the rope is pulled leftwards, the braking rolling shaft slides upwards, moves to the side of the fixed rolling shaft, clamps the rope and controls the height of the phase-change louver board, when the rope is pulled rightwards, the braking rolling shaft slides downwards, and the phase-change louver board is restored to the original state; the adjustment of the height of the phase-change louver boards and the distance between the phase-change louver boards is achieved.
Furthermore, the rotating device consists of a rope winder, a fixed support, a rotating shaft, a worm wheel, a worm and two side ladder ropes, wherein the three side ladder ropes are fixed on two sides of the phase-change louver board in parallel and respectively penetrate through the fixed support; the rotating shaft sequentially penetrates through the three rope winders, the right end of the rotating shaft is connected with the worm wheel and the worm, the worm is pulled to drive the worm wheel and the rotating shaft to rotate, the rope winder above the fixed support drives the ladder ropes on the two sides to rotate, and the angle of the phase-change louver board is adjusted; the free switching from the rotation to the outdoor to absorb the solar heat in the daytime and the rotation to the indoor to release the heat in the evening is realized.
Furthermore, the phase change louver board comprises a polyvinyl chloride (PVC) board layer, a polystyrene (EPS) heat preservation layer and a phase change material layer from bottom to top in sequence. The polystyrene (EPS) heat-insulating layer is arranged to enable the phase-change material to absorb and release solar radiation heat to the maximum extent and reduce heat dissipation to the outdoor at night as much as possible.
Furthermore, the phase change shutter device is hung on a supporting framework of the plastic greenhouse and arranged on the south outer side, so that the maximum solar radiation absorbed by the phase change material is ensured.
Further, the regulation and control method of the phase change shutter temperature control device comprises the following steps:
(1) in the daytime, after the sun rises, after the curtain is rolled by a curtain rolling machine, the worm is pulled to drive the worm wheel and the rotating shaft to rotate, so that the rope rolling device above the fixed support drives the ladder ropes on the two sides to rotate to adjust the angle of the phase change louver boards, the side, provided with the phase change material, of the phase change louver boards is rotated to the outer side of the plastic large shed, heat is stored by absorbing solar energy, and heat is stored in the phase change material layer;
(2) at night, after the sun falls into a mountain, the temperature in the shed is reduced, the worm is pulled to drive the worm wheel and the rotating shaft to rotate, the rope winder above the fixed support drives the ladder ropes on the two sides to rotate, the bottom surface of the polyvinyl chloride (PVC) plate rotates to the outer side of the shed, and heat stored in the phase change material in the daytime is used for supplying heat to the inside of the shed; then the lifting rope is pulled to tighten the polyvinyl chloride (PVC) plates, so that no gap exists between the PVC plates, heat dissipation to the outdoor is reduced, and finally the roller shutter is put down.
The invention has the advantages that:
(1) the phase-change louver board is small in size, the inclination angle can be adjusted, and the illumination of crops cannot be shielded;
(2) gaps exist among the phase-change louver boards, so that the ventilation and heat exchange of the greenhouse are not influenced; the light shutter device can be directly hung on the framework of the plastic greenhouse, and the actual utilization area in the greenhouse is not occupied;
(3) compared with an improved mode of putting phase change materials into a greenhouse framework, the phase change shutter temperature control device can more effectively control temperature change in the greenhouse, and is more convenient and faster to operate compared with a mode of packaging, carrying in and carrying out the phase change materials;
(4) the phase change louver board phase change material disclosed by the invention is pollution-free, can meet the plant growth requirement by utilizing solar energy, can effectively save energy, and realizes green production of southern plastic greenhouses.
Drawings
FIG. 1 is a schematic structural view of a phase change blind temperature control device according to the present invention;
FIG. 2 is a schematic view of the arrangement of the temperature control device of the phase change blind in the plastic greenhouse;
FIG. 3 is a schematic view of a phase change louver;
FIG. 4 is a schematic view of the arrangement of the phase change slats during the day;
FIG. 5 is a schematic view of the arrangement of the phase-change slats at night;
in the figure: 1-phase change shutter device, 2-rope winder, 3-fixed support, 4-rotating shaft, 5-worm wheel, 6-worm, 7-ladder rope, 8-phase change shutter plate, 9-rope lock, 10-fixed roller, 11-braking roller, 12-lifting rope, 13-phase change material layer, 14-polystyrene (EPS) heat insulation layer and 15-polyvinyl chloride (PVC) plate.
Detailed Description
The invention will be further described with reference to the accompanying drawings.
As shown in fig. 1-2, a temperature control device for phase change blinds used in a vinyl house and a control method thereof, the device comprises a rotating device, a lifting device and phase change blinds; the rotating device consists of a rope winder 2, a fixed support 3, a rotating shaft 4, a worm wheel 5, a worm 6 and ladder ropes 7 on two sides, and the angle of the phase-change louver boards 8 is adjusted; the lifting device consists of a lifting rope 12 and a rope lock 9 and controls the lifting of the phase-change louver boards 8; the phase change louver board is composed of a polyvinyl chloride (PVC) board layer 15, a polystyrene (EPS) heat insulation layer 14 and a phase change material layer 13 from bottom to top in sequence.
As shown in fig. 3, the phase change shutter devices are suspended on the supporting framework of the vinyl house, and are arranged in a group at intervals of 1 meter and are uniformly arranged; the length of the plastic greenhouse is 24 meters, the width is 9 meters, the height is 4 meters, five groups can be arranged, each group is 3 meters long, and the plastic greenhouse is arranged on the side which is most fully illuminated by the sun.
As shown in fig. 4, in the daytime, after the sun rises, and the roller shutter is rolled by the roller shutter machine, the worm 6 is pulled to drive the worm wheel 5 and the rotating shaft 4 to rotate, the rotating shaft 5 rotates to drive the ladder ropes 7 on the two sides to adjust the angle of the phase change louver boards 8, the side of the phase change louver with the phase change material rotates to the outside of the plastic greenhouse, heat is stored by absorbing solar energy, and heat is stored in the phase change material layer 13.
As shown in fig. 5, at night, after the sun falls off the mountain, the temperature in the shed is reduced, the pulling worm 6 drives the worm wheel 5 and the rotating shaft 4 to rotate, the rotating shaft 4 rotates to drive the angle of the two-side pull rope 7 to adjust the phase-change louver boards 8, the bottom surface of the polyvinyl chloride (PVC) board 15 rotates to the outside of the shed, the lifting rope 12 is pulled to tighten up the polyvinyl chloride (PVC) board 15 through the lifting device, no gap exists between the polyvinyl chloride (PVC) board 15, the lifting rope 12 moves leftwards, the lifting rope 12 is clamped by the braking roller 11 and the fixed roller 10, the rolling curtain is put down, and heat is supplied to the shed by heat stored in the phase-change material in the daytime.
The above-described embodiments are intended to illustrate rather than to limit the invention, and any modifications and variations of the present invention are within the spirit of the invention and the scope of the claims.
Claims (7)
1. A phase change shutter temperature control device applied to a vinyl house is characterized by comprising a rotating device, a lifting device and a phase change shutter plate; the rotating device consists of a rope winder (2), a fixed support (3), a rotating shaft (4), a worm wheel (5), a worm (6) and ladder ropes (7) on two sides, and the angle of the phase-change louver board (8) is adjusted; the lifting device consists of a lifting rope (12) and a rope lock (9) and controls the lifting of the phase-change louver board (8); the phase change louver board is composed of a polyvinyl chloride (PVC) board layer (15), a polystyrene (EPS) heat insulation layer (14) and a phase change material layer (13) from bottom to top in sequence.
2. The temperature control device of the phase change shutter applied to the vinyl house of claim 1, wherein: three ladder ropes (7) on the two sides are fixed on the two sides of the phase-change louver board (8) in parallel and respectively pass through the rope winders (2) above the 3 fixed supports (3); rotation axis (4) pass three serving ware (2) in proper order, and its right-hand member is connected with worm wheel (5), worm (6), and pulling worm (6) drive worm wheel (5) and rotation axis (4) rotate, make serving ware (2) above fixed support (3) drive both sides ladder rope (7) and rotate, adjust the angle of phase transition shutter plate (8).
3. The temperature control device of the phase change shutter applied to the vinyl house of claim 1, wherein: the lifting rope (12) is provided with three lifting ropes, one end of each lifting rope penetrates through the center of each phase change louver board (8) and is fixed at the bottom of the last phase change louver board (8), the other end of each lifting rope penetrates through holes below the three fixing supports (3) and simultaneously penetrates through the rope lock (9) to form a main rope serving as a handle during lifting.
4. The temperature control device for phase change shutters for vinyl houses as claimed in claim 1, wherein: rope lock (9) constitute by fixed roller bearing (10) and braking roller bearing (11) for the control is carried the lift of rope (12), works as pulling the rope left, and braking roller bearing (11) upwards slides, moves to fixed roller bearing (10) next door, blocks the rope, controls the height of phase transition shutter plate (8), pulls the rope right, braking roller bearing (11) lapse, phase transition shutter plate (8) reconversion.
5. The temperature control device of the phase change shutter applied to the vinyl house of claim 1, wherein: phase change shutter plate (8) form by the mill prefabrication, polyvinyl chloride (PVC) board (15) width of its bottom is greater than the upper two-layer for fixed both sides ladder rope (7), the intermediate level is prefabricated cuboid type polystyrene (EPS) heat preservation, the surface course is encapsulation fashioned phase change material (13).
6. The temperature control device of the phase change shutter applied to the vinyl house of claim 1, wherein: the phase change shutter device is hung on a supporting framework of the plastic greenhouse and is arranged on the south outer side.
7. A regulation and control method of a phase change shutter temperature control device applied to a vinyl house is characterized by comprising the following steps:
(1) in the daytime, after the sun rises, a roller shutter machine is used for rolling a curtain, a worm gear (5) and a rotating shaft (4) are driven to rotate by pulling a worm (6), a rope winder (2) above a fixed support (3) drives two side ladder ropes (7) to rotate, the angle of a phase change shutter plate (8) can be adjusted, one side of the phase change shutter with a phase change material is rotated to the outer side of a plastic large shed, heat is stored by absorbing solar energy, and heat is stored in a phase change material layer;
(2) at night, after the sun falls into a mountain, the temperature in the shed is reduced, the worm (6) is pulled to drive the worm wheel (7) and the rotating shaft (4) to rotate, the rotating shaft (4) rotates to drive the ladder ropes (7) on the two sides to rotate the bottom surface of the polyvinyl chloride (PVC) plate (15) to the outside of the shed, and heat stored in the phase-change material in the daytime is utilized to supply heat to the inside of the shed; then the lifting rope (12) is pulled to tighten the polyvinyl chloride (PVC) plates (15) to ensure that no gap exists between the PVC plates (15), the heat dissipation is reduced, and finally the roller shutter is put down.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210298177.9A CN114793711A (en) | 2022-03-25 | 2022-03-25 | Phase change shutter temperature control device applied to plastic greenhouse and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210298177.9A CN114793711A (en) | 2022-03-25 | 2022-03-25 | Phase change shutter temperature control device applied to plastic greenhouse and control method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114793711A true CN114793711A (en) | 2022-07-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210298177.9A Pending CN114793711A (en) | 2022-03-25 | 2022-03-25 | Phase change shutter temperature control device applied to plastic greenhouse and control method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114793711A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117652322A (en) * | 2023-12-29 | 2024-03-08 | 邹城市农业农村局(邹城市乡村振兴局、邹城市畜牧兽医局) | Agricultural planting greenhouse and temperature and humidity regulation and control method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05171881A (en) * | 1991-12-24 | 1993-07-09 | Matsushita Electric Works Ltd | Regenerative blind |
| CN205596754U (en) * | 2016-05-12 | 2016-09-28 | 北京大学邯郸创新研究院 | Phase change energy storage device |
| CN210695001U (en) * | 2019-10-08 | 2020-06-09 | 四川农业大学 | A picking tool for actinidia arguta |
| CN211598431U (en) * | 2019-11-26 | 2020-09-29 | 天津城建大学 | Solar phase-change heat storage type horizontal shutter curtain |
| CN113711819A (en) * | 2021-09-03 | 2021-11-30 | 黑龙江八一农垦大学 | Phase change sunshade energy storage equipment of Venlo type glass greenhouse |
-
2022
- 2022-03-25 CN CN202210298177.9A patent/CN114793711A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05171881A (en) * | 1991-12-24 | 1993-07-09 | Matsushita Electric Works Ltd | Regenerative blind |
| CN205596754U (en) * | 2016-05-12 | 2016-09-28 | 北京大学邯郸创新研究院 | Phase change energy storage device |
| CN210695001U (en) * | 2019-10-08 | 2020-06-09 | 四川农业大学 | A picking tool for actinidia arguta |
| CN211598431U (en) * | 2019-11-26 | 2020-09-29 | 天津城建大学 | Solar phase-change heat storage type horizontal shutter curtain |
| CN113711819A (en) * | 2021-09-03 | 2021-11-30 | 黑龙江八一农垦大学 | Phase change sunshade energy storage equipment of Venlo type glass greenhouse |
Non-Patent Citations (1)
| Title |
|---|
| 杨京平: "环境生态工程", vol. 1, 中国环境科学出版社, pages: 58 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117652322A (en) * | 2023-12-29 | 2024-03-08 | 邹城市农业农村局(邹城市乡村振兴局、邹城市畜牧兽医局) | Agricultural planting greenhouse and temperature and humidity regulation and control method thereof |
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