Solar heat accumulator used for regulating temperature difference of greenhouse

Abstract

The invention discloses a solar heat accumulator used for regulating the temperature difference of a greenhouse and relates to a temperature regulating device for agricultural greenhouses. The solar heat accumulator used for regulating the temperature difference of the greenhouse is characterized in that the solar heat accumulator is composed of a heat storage barrel, a heat exchanging coil and a heat preservation cotton-padded covering, wherein the wall of the heat storage barrel is of a cylindrical structure, the inner space of the heat storage barrel forms an air heat exchanging chamber, cooling ribs are arranged on the inner wall of the heat storage barrel and are annularly and evenly distributed in the air heat exchanging chamber, the heat exchanging coil is arranged in the wall of the heat storage barrel, a hot oil input port is formed in the upper end of the heat exchanging coil, an oil return output port is formed in the lower end of the heat exchanging coil, the heat preservation cotton-padded covering is mounted on the outer wall of the heat storage barrel, an air return input port is formed in the upper end of the solar heat accumulator, a hot air output port is formed in the lower end of the solar heat accumulator, and the air return input port is communicated with the hot air output port through the air heat exchanging chamber. According to the solar heat accumulator, solar energy is stored in the solar heat accumulator, when temperature in the greenhouse drops at night, heat is released gradually so that the diurnal temperature difference in the greenhouse is reduced.

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 large temperature difference between day and night in the existing agricultural greenhouses, and to provide a solar heat accumulator for adjusting the temperature difference in greenhouses. When the temperature in the greenhouse drops, heat is released gradually, reducing the cooling range in the greenhouse, reducing the temperature difference between day and night in the greenhouse, creating an environment conducive to the growth of fruits and vegetables, and improving the quality and output of fruits and vegetables

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