CN215819504U

CN215819504U - Positive-pressure aeration cooling system for greenhouse and greenhouse comprising positive-pressure aeration cooling system

Info

Publication number: CN215819504U
Application number: CN202122186242.2U
Authority: CN
Inventors: 田学书
Original assignee: Taizhou Suzhong Horticulture Co ltd
Current assignee: Taizhou Suzhong Horticulture Co ltd
Priority date: 2021-09-09
Filing date: 2021-09-09
Publication date: 2022-02-15
Anticipated expiration: 2031-09-09

Abstract

The utility model relates to the technical field of greenhouse planting greenhouses, in particular to a positive-pressure aeration cooling system for a greenhouse and the greenhouse comprising the positive-pressure aeration cooling system. The utility model can solve the technical problem that the existing wet curtain system limits the length and the construction area of the greenhouse, and can carry out rapid cooling and ventilation on the greenhouse.

Description

Positive-pressure aeration cooling system for greenhouse and greenhouse comprising positive-pressure aeration cooling system

Technical Field

The utility model relates to the technical field of greenhouse planting greenhouses, in particular to a positive-pressure ventilation cooling system for a greenhouse and the greenhouse with the system.

Background

The greenhouse has unique greenhouse effect, and in order to meet the growth requirement of plants in high-temperature weather, the greenhouse needs to be ventilated and cooled, and the cooling requirement is difficult to meet only through natural ventilation. At present, the principle of evaporative cooling is mostly adopted for cooling, and a wet curtain negative pressure fan cooling system is most commonly adopted for ventilating and cooling a greenhouse. The system is mainly composed of a paper porous wet curtain, a water circulation system and a fan, when air flows through the surface of the porous and wet curtain, a large amount of water is evaporated and absorbed, so that the temperature of the air is reduced, and cold air cooled by the wet curtain is continuously introduced into a room through the fan, so that the cooling effect is achieved. However, when the system is in operation, the temperature gradient exists in the cold and wet air entering the greenhouse in the air flow direction, the temperature at the position close to the wet curtain is lower, and the temperature at the position close to the fan is relatively higher, so that the temperature in the greenhouse is not uniformly adjusted, the plant growth in the greenhouse is influenced, the crop cultivation is not facilitated, the negative pressure fan is low in working efficiency and high in energy consumption, and the building length of the greenhouse is limited.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects in the prior art, the utility model provides the positive pressure ventilation cooling system for the greenhouse and the greenhouse comprising the positive pressure ventilation cooling system, the positive pressure fan is used for absorbing air outside the greenhouse to the wet curtain device and converting the air into wet cold air, and then the wet cold air is conveyed into the greenhouse for rapid cooling and ventilation, the operation is simple and convenient, the cost is low, the temperature distribution in the greenhouse is uniform, the energy consumption is reduced by combining the arrangement of three layers of heat preservation curtains, the positive pressure ventilation cooling system is suitable for the construction of the greenhouse with larger area, and the technical problems that the length and the construction area of the greenhouse are limited by the existing wet curtain cooling system for the greenhouse, the cooling and ventilation effects are poor, the temperature in the greenhouse is not uniform, the growth of plants is influenced and the like can be effectively solved.

In order to solve the technical problem, the technical scheme of the utility model is realized by the following modes:

a positive pressure ventilation cooling system for a greenhouse comprises a greenhouse main body, a wet curtain device, a positive pressure fan and a ventilation pipe, the upper space inside the greenhouse main body is respectively provided with a first layer of heat preservation curtain, a second layer of heat preservation curtain and a third layer of heat preservation curtain horizontally from bottom to top in sequence, an air inlet area is arranged on one side of the greenhouse main body and is positioned between the first layer of heat preservation curtain and the third layer of heat preservation curtain, an air inlet is formed in one side of the air inlet area, a rolling film covers the outer side of the air inlet, the wet curtain device is arranged on the inner side of the air inlet and covers the air inlet, the positive pressure fan is arranged on the other side of the air inlet area and is opposite to the wet curtain device, the air inlet of the positive pressure fan is communicated with the air inlet area, the air outlet of the positive pressure fan is communicated with the ventilation pipe, and the ventilation pipe is communicated with the planting area of the greenhouse. By adopting the technical scheme, the size of the air inlet is adjusted by controlling the opening and closing conditions of the rolled film, the positive pressure fan is operated to suck the air outside the greenhouse main body into the air inlet area after the temperature of the wet curtain device is reduced, and the air is sucked into the ventilation pipe by the positive pressure fan in a positive pressure manner and is conveyed to each part inside the greenhouse, so that the aims of rapid temperature reduction and ventilation are fulfilled.

Furthermore, the ventilation pipe is communicated with a plurality of groups of first circulating fans, and a plurality of ventilation holes are formed in the pipe wall of the ventilation pipe. Through this technical scheme, can accelerate the inside air exchange and the circulation in greenhouse, improve greenhouse cooling speed.

Furthermore, the air inlet area is separated from the planting area through a partition plate, and a layer of PC hollow plate is arranged on the inner wall of the air inlet area. Because the hollow plate in the PC has excellent light transmission performance and heat insulation performance, through the technical scheme, the shielding of the air inlet area to illumination can be reduced as much as possible, the lighting of plants is avoided being influenced, and meanwhile, the temperature of cold air converted by the wet curtain device in the air inlet area is favorably maintained.

Further, an insect-proof net covering the air inlet is arranged between the wet curtain device and the rolling film. Through this technical scheme, can avoid external harmful insect to get into inside the greenhouse main part, cause the influence to the growth of planting the plant in the planting district.

Further, the first layer of heat-preservation curtain adopts a climate curtain with 80% of light transmittance and 45% of energy saving rate; the second layer of heat-insulating curtain adopts a climate curtain with 55% of light transmittance and 70% of energy saving rate; the third layer of heat preservation curtain adopts a weather curtain which is light-proof and has the energy saving rate of 85 percent.

The utility model also provides a greenhouse, which comprises the positive pressure ventilation cooling system for the greenhouse.

Furthermore, the installation heights of the first layer of heat-preservation curtain, the second layer of heat-preservation curtain and the third layer of heat-preservation curtain from the ground are respectively 2.8 meters, 4.6 meters and 5.2 meters.

Further, the thickness of the wet curtain paper in the wet curtain device is 10 centimeters, and the height of the wet curtain device is 1.8 meters.

Furthermore, a second circulating fan 7 communicated with the planting area is arranged above the upright post 9 of the greenhouse. Through this technical scheme, can promote the inside air flow in greenhouse, make everywhere temperature and humidity in the greenhouse keep unanimous, avoid influencing the growth of plant.

Further, the top of greenhouse is provided with ventilation window 8, ventilation window 8 coats and is stamped fly net and heat preservation membrane. Through this technical scheme, the ventilation window at greenhouse top combines together with positive pressure positive blower, can make the inside air of greenhouse arrange to outdoor fast, and circulation of air accelerates, reaches the purpose of inside and outside air exchange of greenhouse and cooling.

Compared with the conventional wet curtain cooling system for the greenhouse, the wet curtain cooling system has the following beneficial effects:

(1) according to the positive pressure ventilation cooling system for the greenhouse, the air outside the greenhouse is absorbed to the wet curtain device through the positive pressure fan and is converted into the wet cold air, and then the wet cold air is conveyed into the greenhouse for rapid cooling and ventilation, the temperature inside the greenhouse is uniformly dispersed, the temperature gradient in the cooling process is avoided, the operation is simple and convenient, the energy consumption of the fan is low, the manufacturing cost is low, the positive pressure ventilation cooling system is economic and environment-friendly, and is not limited by the traditional negative pressure fan to the length of the greenhouse, and the positive pressure ventilation cooling system is suitable for the construction and use of the greenhouse with a large area.

(2) According to the greenhouse with the positive pressure ventilation cooling system, the positive pressure fan, the wet curtain device and the ventilation pipe are used together, so that the greenhouse can be rapidly cooled and ventilated, the temperature in the whole greenhouse is uniformly dispersed, the entrance of external harmful insects is reduced, and the growth of crops is facilitated.

(3) According to the utility model, the positive pressure fan and the wet curtain device are arranged between the first layer of heat preservation curtain and the third layer of heat preservation curtain, and the size of the cooling or ventilating space in the greenhouse is adjusted by combining the opening and closing states of the three layers of heat preservation curtains respectively, so that the purpose of reducing energy consumption is achieved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model and not to limit the utility model. In the drawings:

FIG. 1 is a schematic structural diagram of a positive pressure aeration cooling system for a greenhouse;

FIG. 2 is a schematic diagram of a greenhouse incorporating a positive pressure aeration cooling system.

Description of reference numerals: 1. a greenhouse body; 11. a first layer of heat preservation curtain; 12. a second layer of heat preservation curtain; 13. a third layer of heat preservation curtain; 14. an air inlet; 15. rolling the film; 16. an insect-proof net; 17. a partition plate; 18. a PC hollow plate; 19. a column; 2. a wet curtain device; 3. a positive pressure fan; 4. a vent pipe; 41. a first circulation fan; 42. a vent hole; 5. an air inlet area; 6. a planting area; 7. a second circulation fan; 8. a ventilation window.

Detailed Description

The preferred embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, and it should be understood that the embodiments described herein are merely for purposes of illustration and explanation, and are not intended to limit the utility model.

Examples

As shown in fig. 1, the positive pressure aeration cooling system for a greenhouse provided by the present embodiment includes a greenhouse main body 1, a wet curtain device 2, a positive pressure fan 3, and a ventilation pipe 4. Wherein, the upper space in the greenhouse main body 1 is horizontally and respectively provided with a first layer heat preservation curtain 11, a second layer heat preservation curtain 12 and a third layer heat preservation curtain 13 from bottom to top, the first layer heat preservation curtain 11 adopts a climate curtain with 80 percent of light transmittance and 45 percent of energy saving rate, the second layer heat preservation curtain 12 adopts a climate curtain with 55 percent of light transmittance and 70 percent of energy saving rate, the third layer heat preservation curtain 13 is an aluminum foil sun-shading heat preservation curtain, and is light-proof, 99 percent of shading and 85 percent of energy saving rate. An air inlet area 5 is arranged on one side of the greenhouse main body 1, and the air inlet area 5 is positioned between the first layer of heat preservation curtain 11 and the third layer of heat preservation curtain 13.

Referring to fig. 2, the air intake area 5 is separated from the planting area 6 by a partition 17, and the inner wall of the air intake area 5 is provided with a layer of PC hollow plate 18, so that the shielding of the air intake area 5 on illumination is reduced as much as possible, the lighting of plants in the planting area 6 is avoided, and the temperature of cold air converted by the wet curtain device 2 in the air intake area 5 is maintained. An air inlet 14 is arranged at one side of the air inlet area 5, and the outer side of the air inlet 14 is sequentially covered with an insect-proof net 16 and a rolling film 15. The wet curtain device 2 is mounted on a vertical column 19 of the greenhouse, is positioned on the inner side of the air inlet 14 and covers the air inlet 14. The ventilation quantity at the air inlet 14 is adjusted by controlling the opening and closing conditions of the rolling film 15, and the insect-proof net 16 is used for preventing external harmful insects from entering the greenhouse main body 1 to influence the growth of plants in the planting area 6. As can be seen from the combination of the figure 1 and the figure 2, the positive pressure fan 3 is arranged on the other side of the air inlet area 5, the positive pressure fan 3 is a 630-type positive pressure fan, the positive pressure fan 3 is arranged opposite to the wet curtain device 2, the air inlet of the positive pressure fan 3 is communicated with the air inlet area 5, the air outlet of the positive pressure fan 3 is communicated with the ventilation pipe 4, and the ventilation pipe 4 is communicated with the planting area 6 of the greenhouse. As shown in fig. 2, a plurality of groups of first circulating fans 41 are communicated with the inside of the ventilation pipe 4, and a plurality of ventilation holes 42 are formed in the pipe wall of the ventilation pipe 4, so that the ventilation pipe 4 can convey wet and cold air to different positions of the greenhouse for rapid cooling, and the temperature inside the greenhouse can rapidly reach uniform balance.

The embodiment also provides a greenhouse comprising the positive pressure ventilation cooling system, as shown in fig. 2, the installation heights of the first layer of heat-insulating curtain 11, the second layer of heat-insulating curtain 12 and the third layer of heat-insulating curtain 13 from the ground are respectively 2.8 meters, 4.6 meters and 5.2 meters. The wet curtain device 2 adopts an aluminum alloy outer frame and is arranged on a stand column of the greenhouse. The height of the wet curtain device 2 is 1.8 m, wherein the thickness of the wet curtain paper is 10 cm. And a second circulating fan 7 communicated with the planting area 6 is arranged above the upright post 19 of the greenhouse. The air flow in the greenhouse is promoted, and the consistency of the temperature and the humidity in various positions in the greenhouse is ensured. The top in greenhouse still is provided with vertically ventilation window 8, and ventilation window 8 coats and is stamped fly net and heat preservation membrane, and the inside ventilation of the greenhouse of being convenient for, cooling dehumidification.

The working mode of the positive pressure aeration cooling system of the embodiment is as follows:

when the greenhouse needs to be cooled in summer, the third layer of heat-insulating curtain 13 is rolled, the second layer of heat-insulating curtain 12 is opened, the upper-layer high-temperature space of the greenhouse is cut off, and the positive-pressure ventilation cooling system cools the greenhouse space below the second layer of heat-insulating curtain 12 so as to reduce energy consumption. The film rolling machine is controlled to roll the rolling film 15 covering the air inlet 14, the size of the air inlet is adjusted, the positive pressure fan 3 is operated, air outside the greenhouse main body 1 is sucked through the wet curtain device 2 to be cooled and then enters the air inlet area 5, the air is conveyed to the ventilation pipe 4 through the positive pressure fan 3 in a positive pressure mode, the air is discharged to all positions inside the greenhouse through the first circulating fan 41 and the ventilation hole 42, under the auxiliary action of the second circulating fan 7, the temperature inside the greenhouse main body 1 is quickly adjusted to achieve the purpose of quick cooling and ventilation, and the requirement of crop growth in the planting area 6 for stable environment temperature is met.

The positive pressure fan can also be operated independently and is matched with a ventilation window at the top of the greenhouse and a three-layer horizontal heat-insulating curtain in the greenhouse to realize the functions of ventilation, cooling, ventilation and dehumidification. When the outside temperature of greenhouse is suitable and windless, need carry out rapid cooling or take a breath for greenhouse inside, the horizontal heat preservation curtain of rolling three-layer opens the ventilation window 8 at greenhouse top, closes the water pump in the wet curtain device 2, opens positive pressure fan 3, forces the cooling of taking a breath to greenhouse inside. In addition, if the positive pressure ventilation cooling system does not need to be started when the greenhouse needs to be heated in winter, the third layer of heat-insulating curtain 13 can be unfolded, so that the heating space in the greenhouse is reduced, and the purpose of saving energy consumption is achieved.

Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that various changes, modifications and substitutions can be made without departing from the spirit and scope of the utility model as defined by the appended claims. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a malleation aeration cooling system for greenhouse, its characterized in that, including greenhouse main part (1), wet curtain device (2), positive pressure fan (3) and ventilation pipe (4), the upper space of greenhouse main part (1) inside from bottom to top sets up first layer heat preservation curtain (11), second floor heat preservation curtain (12) and third layer heat preservation curtain (13) respectively horizontally in proper order one side of greenhouse main part (1) sets up air inlet district (5), air inlet district (5) are located between first layer heat preservation curtain (11) and third layer heat preservation curtain (13) air inlet (14) are seted up to one side of air inlet district (5), the outside of air inlet (14) is covered and is rolled up membrane (15), wet curtain device (2) set up the inboard of air inlet (14) and cover air inlet (14) the opposite side installation of air inlet district (5) positive pressure fan (3), malleation fan (3) with wet curtain device (2) sets up relatively, the air intake intercommunication of malleation fan (3) air inlet district (5), its air outlet intercommunication ventilation pipe (4), ventilation pipe (4) intercommunication greenhouse plant district (6).

2. The positive-pressure ventilating and cooling system for the greenhouse as claimed in claim 1, wherein the ventilating pipe (4) is communicated with a plurality of groups of first circulating fans (41), and a plurality of ventilating holes (42) are formed in the pipe wall of the ventilating pipe (4).

3. The positive-pressure aeration cooling system for the greenhouse as claimed in claim 1, wherein the air intake area (5) is separated from the planting area (6) by a partition plate (17), and the inner wall of the air intake area (5) is provided with a layer of PC hollow plate (18).

4. The positive-pressure aeration cooling system for the greenhouse as claimed in claim 1, wherein an insect-proof net (16) covering the air inlet (14) is arranged between the wet curtain device (2) and the rolling film (15).

5. The positive pressure aeration cooling system for the greenhouse as claimed in claim 1, wherein the first layer of heat preservation curtain (11) adopts a climate curtain with 80% of light transmittance and 45% of energy saving rate; the second layer of heat-insulating curtain (12) adopts a climate curtain with 55% of light transmittance and 70% of energy saving rate; the third layer of heat preservation curtain (13) adopts a weather curtain which is light-proof and has the energy saving rate of 85 percent.

6. A greenhouse, characterized in that the greenhouse comprises the positive pressure aeration cooling system for the greenhouse of any one of claims 1 to 5.

7. Greenhouse according to claim 6, characterised in that the first (11), second (12) and third (13) insulating screens are installed at a height of 2.8, 4.6 and 5.2 metres from the ground, respectively.

8. Greenhouse according to claim 6, in which the thickness of the wet curtain paper in the wet curtain device (2) is 10 cm and the height of the wet curtain device (2) is 1.8 m.

9. Greenhouse according to claim 6, characterised in that above the vertical column (19) of the greenhouse there is installed a second circulation fan (7) which communicates with the growing area (6).

10. Greenhouse according to claim 6, characterised in that the roof of the greenhouse is provided with ventilation windows (8), and that the ventilation windows (8) are covered with insect-proof nets and heat-insulating films.