CN210869027U

CN210869027U - Ventilation system for greenhouse

Info

Publication number: CN210869027U
Application number: CN201921757994.6U
Authority: CN
Inventors: 白龙强; 李亚灵; 张毅
Original assignee: Shanxi Agricultural University
Current assignee: Shanxi Agricultural University
Priority date: 2019-10-20
Filing date: 2019-10-20
Publication date: 2020-06-30
Anticipated expiration: 2029-10-20

Abstract

The utility model discloses a greenhouse ventilation system, be responsible for, air intake branch, variable frequency fan, exhaust branch, ozone generator, CO including admitting air₂A generator, a controller, and an upper vent window controller. The air inlet branch pipe provided with an air inlet is arranged at the upper ventilation window of the sunlight greenhouse or the plastic greenhouse, longitudinally penetrates the whole greenhouse or the plastic greenhouse along the upper ventilation window and passes through the air inlet mainThe pipe is connected with the air inlet of the variable frequency fan. One end of the main exhaust pipe is connected with an air outlet of the variable frequency fan, the other end of the main exhaust pipe is communicated with an exhaust branch pipe paved on the ground between crop rows, and fine exhaust holes are reserved on the exhaust branch pipe at certain intervals. Ozone generator and CO₂The generator is communicated with the air inlet main pipe in parallel. The utility model can effectively reduce the violent fluctuation of the climate in the greenhouse or the plastic greenhouse and improve CO₂The fertilizer application efficiency is improved, the diseases are controlled by combining with ozone, and the pesticide use amount is reduced.

Description

Ventilation system for greenhouse

Technical Field

The utility model belongs to the technical field of the green house, concretely relates to greenhouse ventilation system.

Background

Sunlight greenhouses and plastic greenhouses are main facilities for vegetable production in China. At present, environment regulation and control technologies and equipment in sunlight greenhouses and plastic greenhouses in China are relatively backward, indoor temperature and air humidity are generally regulated only by opening ventilation openings, climatic conditions in facilities are often changed violently, and the requirements of crop growth and development are difficult to adapt.

Disclosure of Invention

In order to overcome the defect among the prior art, the utility model provides a warmhouse booth ventilation system, the device simple structure, equipment convenience, low cost can effectively alleviate the violent influence that warmhouse booth aeration cooling led to the fact the indoor environment, make the more suitable crop growth of environment.

The utility model discloses a realize through following technical scheme.

A greenhouse ventilation system comprises an air inlet main pipe, an air inlet branch pipe, a variable frequency fan, an exhaust main pipe, an exhaust branch pipe, an ozone generator and CO₂A generator, a controller, and an upper vent window controller. The air inlet branch pipes are arranged at the upper ventilation windows of the sunlight greenhouse or the plastic greenhouse and longitudinally penetrate through the whole greenhouse or the plastic greenhouse along the upper ventilation windows, air inlets are reserved on the air inlet branch pipes at certain intervals, and the air inlet branch pipes are connected with the air inlets of the variable frequency fans through the air inlet main pipes. One end of the exhaust main pipe is connected with an air outlet of the variable frequency fan, and the other end of the exhaust main pipe is communicated with the exhaust branch pipe. The exhaust branch pipes are laid on the ground among the crop rows, and fine exhaust holes are reserved on the exhaust branch pipes at certain intervals. The ozone generator and CO₂The generator is communicated with the air inlet main pipe in parallel. The controller, the variable frequency fan, the ozone generator and the CO₂The generator is connected with the upper ventilation window controller according to the temperature and CO in the greenhouse₂The concentration is dynamically changed, and the controller sets the frequency conversion fan, the ozone generator and the CO to be automatically controlled₂Generator and upper channelAnd (4) switching program of the wind window controller.

The working principle of the system device is as follows: in the morning, after the temperature of the sunlight greenhouse and the plastic greenhouse in the room receiving the solar radiation begins to rise to a certain temperature, the controller starts the variable frequency fan, the ozone generator and the CO₂A generator for sucking warm air in the greenhouse headspace into the system and mixing ozone and CO₂Then slowly blowing out from the base of the crop stem to break the temperature difference in the vertical direction, and circulating to make the temperature and CO in the whole room₂Slowly rises to promote the photosynthesis of crops, and utilizes ozone to sterilize and inhibit bacteria; when the indoor temperature continuously rises to reach a certain temperature, the controller adjusts the upper ventilation window through the upper ventilation window controller to increase the opening degree, increases the frequency of the variable frequency fan through adjustment, and reduces CO₂The generation rate and the closing of the ozone generator ensure that the system can avoid the severe fluctuation of the indoor environment while absorbing partial outdoor cold air to enhance the indoor cooling effect and reduce CO₂Is wasted. In the afternoon, the solar radiation energy is gradually reduced, when the indoor temperature is reduced to a certain temperature, the controller is timely turned off until the upper ventilation window is closed, and the CO is increased₂And (3) starting an ozone generator at the generation rate, continuously promoting the photosynthesis of crops, and utilizing ozone for sterilization and bacteriostasis. And when the illumination intensity is lower than the crop optical compensation point, closing the system.

Compared with the prior art, the utility model has the advantages that: (1) the severe fluctuation of indoor climate is effectively reduced. (2) Significant enhancement of CO₂The efficiency of fertilization effectively improves the photosynthesis of crops. (3) The disease is controlled by combining ozone, and the using amount of pesticide is reduced.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

In the figure: 1. an air inlet main pipe, 2 an air inlet branch pipe, 3 a variable frequency fan, 4 an air outlet main pipe, 5 an air outlet branch pipe, 6 an ozone generator, 7 and CO₂Generator, 8, controller, 9, air inlet, 10, exhaust hole, 11, upper ventilation window controller.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings.

As shown in figure 1, the greenhouse ventilation system of the utility model comprises an air inlet main pipe 1, an air inlet branch pipe 2, a frequency conversion fan 3, an exhaust main pipe 4, an exhaust branch pipe 5, an ozone generator 6 and CO₂Generator 7, controller 8 and upper ventilation window controller 11. The air inlet branch pipe 2 is arranged at an upper ventilation window of the sunlight greenhouse or the plastic greenhouse and longitudinally penetrates through the whole greenhouse or the plastic greenhouse along the upper ventilation window; an air inlet 9 is reserved on the air inlet branch pipe 2 at certain intervals; the air inlet branch pipe 2 is connected with an air inlet of the variable frequency fan 3 through the air inlet main pipe 1. One end of the main exhaust pipe 4 is connected with the air outlet of the variable frequency fan 3, and the other end is communicated with the exhaust branch pipe 5. The exhaust branch pipes 5 are laid on the ground among the crop rows, and fine exhaust holes 10 are reserved on the exhaust branch pipes 5 at certain intervals. Ozone generator 6 and CO₂The generator 7 is in parallel communication with the main intake pipe 2. Controller 8, variable frequency fan 3, ozone generator 6 and CO₂The generator 7 and the upper ventilation window controller 11 are connected. According to the temperature and CO in the greenhouse₂The concentration changes dynamically, the controller 8 sets the automatic control variable frequency fan 3, the ozone generator 6 and the CO₂Generator 7 and upper ventilation window controller 11. When the temperature of the sunlight greenhouse and the plastic greenhouse in the solar radiation receiving room begins to rise to a certain temperature, the controller 8 starts the variable frequency fan 3, the ozone generator 6 and the CO₂A generator 7 for introducing warm air into the greenhouse headspace, mixing ozone and CO₂Then slowly blowing out from the base of the crop stem to break the temperature difference in the vertical direction, and circulating to make the temperature and CO in the whole room₂Slowly rises to promote the photosynthesis of crops, and utilizes ozone to sterilize and inhibit bacteria. When the indoor temperature continuously rises to reach a certain temperature, the controller 8 adjusts the upper ventilation window through the upper ventilation window controller 11 to increase the opening degree, increases the frequency of the variable frequency fan 3 and reduces CO₂The generation rate is increased, the ozone generator 6 is closed, the system can suck partial outdoor cold air to enhance the indoor cooling effect, avoid the severe fluctuation of the indoor environment and reduce CO₂Is wasted. When the solar radiation energy is chasingGradually decreases, when the indoor temperature decreases to a certain temperature, the controller 8 is closed at the right moment until the upper ventilation window is closed, and the CO is increased₂And (3) starting the ozone generator 6 at the generation rate to continuously promote the photosynthesis of crops and utilize ozone to sterilize and inhibit bacteria. And when the illumination intensity is lower than the crop optical compensation point, closing the system.

Claims

1. A greenhouse ventilation system is characterized by comprising an air inlet main pipe, air inlet branch pipes, a variable frequency fan, an air outlet main pipe, air outlet branch pipes, a controller and an upper ventilation window controller; the air inlet branch pipes are arranged at the upper ventilation windows of the sunlight greenhouse or the plastic greenhouse and longitudinally penetrate through the whole greenhouse or the plastic greenhouse along the upper ventilation windows, air inlets are reserved on the air inlet branch pipes at certain intervals, and the air inlet branch pipes are connected with the air inlets of the variable frequency fans through the air inlet main pipes; one end of the exhaust main pipe is connected with an air outlet of the variable frequency fan, and the other end of the exhaust main pipe is communicated with an exhaust branch pipe; the exhaust branch pipes are laid on the ground among the crop rows, and fine exhaust holes are reserved on the exhaust branch pipes at certain intervals; the controller is connected with the variable frequency fan and the upper ventilation window controller.

2. The greenhouse ventilation system of claim 1, wherein the air inlet main pipe is connected with an ozone generator and CO in parallel₂A generator; the controller is connected with the ozone generator and the CO₂The generators are connected.