Multifunctional greenhouse insulation device

Abstract

The invention discloses a multifunctional greenhouse insulation device, comprising a first heat-reflecting layer, a first insulation layer, a tensile layer, a second insulation layer and a second heat-reflecting layer; the first insulation layer, the tensile layer, the second insulation layer and the second heat-reflecting layer are disposed in succession below the first heat-reflecting layer, and the adjacent layers are connected by bonding; the first insulation layer, the tensile layer and the second insulation layer are combined in a stair form; the multifunctional greenhouse insulation device with the heat-reflecting layers made with PET aluminized film has good heat reflecting effect, can reflect heat dissipated out in a heat radiation manner from the inside of a greenhouse, back into the greenhouse, can reduce dissipating speed of the heat in the greenhouse and has good waterproof, anti-ultraviolet and insulating properties; cross-linked polyethylene foam material for the insulation layers of the multifunctional greenhouse insulation device is closed-cell foam material, heat conduction coefficient is low, and good waterproof and moisture-proof functions are imparted.

Description

technical field [0001] The invention relates to the technical field of agricultural facilities, in particular to a multifunctional heat preservation device for greenhouses. Background technique [0002] The function of the vegetable greenhouse is to allow sunlight to shine into the shed through the agricultural film to ensure photosynthesis. At the same time, because the greenhouse film isolates the air circulation inside and outside the shed, the temperature in the shed is kept relatively high, which can promote the increase of crop production in the shed. Or the maturity period is advanced, and even off-season crops are planted. But because there is no sunlight at night, the temperature outside the shed is low, and the heat loss in the shed is very fast through heat transfer. The most serious situation is that the crops may be frozen to death due to insufficient temperature in the shed at night, so the heat preservation device for the shed should be used in the market. An...

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Problems solved by technology

But because there is no sunlight at night, the temperature outside the shed is low, and the heat loss in the shed is very fast through heat transfer. The most serious situation is that the crops may be frozen to death due to insufficient temperature in the shed at night, so the heat preservation device for the shed should be used in the market. born

[0003] At present, the common greenhouse insulation quilts on the market are mainly single-function insulation devices. The main function is to reduce heat conduction to achieve insulation effects. The most common combination is multi-layer needle-punched felt or spray-bonded cotton, supplemented by direct sewing of surface materials to form a greenhouse. Insulation quilt, its existing problems: Among the three ways of heat transfer, the main function of the insulation quilt on the market is to reduce heat conduction, but it does not give sufficient consideration to heat convection and heat radiation, so the common greenhouse insulation quilt on the market Although the thickness is very thick, the insulation effect is not ideal, and because it is stitched with needles and threads, it cannot perfectly handle the waterproof problem, and the problem of the decline in the insulation effect in rainy days is very serious.

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