Temperature-difference regulating system for agricultural greenhouse

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 [0001] The invention relates to an agricultural production equipment, in particular to an agricultural greenhouse air temperature adjustment device. Background technique [0002] The agricultural greenhouse is a frame-covered structure with thermal insulation properties. Its appearance allows people to eat off-season vegetables and fruits. Generally, agricultural greenhouses use a bamboo structure or a steel structure frame, covered with one or more layers of thermal insulation plastic film, thus forming a greenhouse space. The outer film can well prevent the loss of carbon dioxide produced by the growth of vegetables inside, so that the shed has a good heat preservation effect. [0003] When there is sunshine during the day, the temperature in the agricultural greenhouse is very high, and at night, affected by the cooling of the environment, the temperature in the greenhouse is too low, and the temperature difference between day and night is large, which is...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to make up for the defect of the large temperature difference between day and night in the existing agricultural greenhouses, and provide an agricultural greenhouse temperature difference adjustment system, which stores the heat of solar energy in the heat accumulator when there is sunlight in the daytime, and when the temperature in the greenhouse drops at night , the heat accumulator gradually releases heat, reduces the cooling range in the greenhouse, reduces the temperature difference between day and night in the greenhouse, creates an environment conducive to the growth of fruits and vegetables, and improves the quality and output of fruits and vegetables

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