Air internal circulation system of artificial climate chamber and control method thereof

Abstract

The invention discloses an air internal circulation system of an artificial climate chamber and a control method thereof. The air internal circulation system of the artificial climate chamber is characterized in that the air internal circulation system comprises a fan, an air duct, an exhaust pipe, a bottom plate, a temperature and humidity sensor and a controller which are respectively installedin the artificial climate chamber; the periphery of the bottom plate is respectively connected with the inner wall of the artificial climate chamber to separate the artificial climate chamber into anupper troposphere and a lower mixed layer through the bottom plate; the bottom plate is opened with a vent which communicates the upper troposphere and the lower mixed layer; the air duct passes through the bottom plate; an inlet of the air duct is located in the upper troposphere, while an outlet of the air duct is positioned in the lower mixed layer; the fan is installed on the inlet of the airduct; the exhaust pipe is mounted in the lower mixed layer and communicates with the outlet of the air duct; an exhaust hole is opened on the exhaust pipe; the temperature and humidity sensor, the fanand the controller are in signal correlation; the controller adjusts the speed of the fan according to the feedback of the temperature and humidity sensor. The air internal circulation system of an artificial climate chamber and the control method thereof have the advantages of enabling upper and lower air in the artificial climate chamber to circulate and carry out convection to form effective heat and humidity transfer, and guaranteeing the accuracy of temperature and humidity control in the artificial climate chamber.

Description

technical field [0001] The invention relates to an air internal circulation system of an artificial climate chamber and a control method thereof, belonging to the technical field of plant cultivation. Background technique [0002] The artificial climate chamber or greenhouse is an important infrastructure for plant production and scientific experimental research. Its function is to artificially adjust or control the growth environment of crops and reduce the restrictions of natural conditions on crop cultivation. At the same time, the artificial climate chamber can control the internal environmental factors, such as temperature, humidity, light and CO 2 Concentration, etc., are individually controlled and automatically adjusted to meet specific environmental requirements, and have a wide range of applications in industry, agriculture, aviation and other fields. [0003] However, although the artificial climate chamber in the prior art can accurately control the indoor air t...

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Problems solved by technology

[0003] However, although the artificial climate chamber in the prior art can accurately control the indoor air temperature and humidity through air conditioning, humidification and dehumidification equipment, under the premise of considering cost factors, the air outlets of these devices are usually installed in the artificial climate chamber. Therefore, it is easy to cause uneven temperature and humidity control in the artificial climate room, which will lead to large However, the traditional method of accelerating the air mixing in the artificial climate room by increasing the air supply volume not only consumes too much energy, but also, the strong wind will have a certain impact on the plants in the artificial climate room

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