Ventilation heating device of vegetable cultivation greenhouse

Abstract

The invention discloses a ventilation heating device of a vegetable cultivation greenhouse. The device includes a semi-circular outer framework provided with an airbag edge, the bottom of the outer framework is provided with a heating cavity, the middle of the outer framework is provided with an openable door, two venting holes are formed in the two sides of the openable door and internally provided with fans, and the bottoms of the venting holes are connected with inner connecting pipes; one end of each inner connecting pipe is connected with the heating cavity formed on the bottom of the outer framework, a heat preservation bottom plate is arranged on the bottom of the interior of each heating cavity, and the top of each heat preservation bottom plate is provided with an electric heating plate; one side of each heating cavity is connected with one micro water pump through a pipeline, the two micro water pumps are connected with a branched pipe A and a branched pipe B through the pipeline to achieve separated-type temperature control ventilation in the greenhouse respectively, and through a terrestrial heating mode, much quicker and stabler control over temperature is effectively achieved.

Description

technical field [0001] The invention relates to the technical field of vegetable greenhouse planting, in particular to a ventilation and heating device for vegetable greenhouses. Background technique [0002] The vegetable greenhouse is a frame-covered structure with excellent thermal insulation performance. It appears that people can eat off-season vegetables. Generally, the vegetable greenhouse uses a bamboo or steel structure frame, covered with one or more layers of thermal insulation plastic film. In this way, a greenhouse space is formed. 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. Generally, a relatively constant temperature is required, which is more conducive to the growth and maturity of off-season vegetables. However, even for vegetable greenhouses with good thermal insulation performance, due to the repeated and changeable winter weather and the sudde...

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Problems solved by technology

[0002] The vegetable greenhouse is a frame-covered structure with excellent thermal insulation performance. It appears that people can eat off-season vegetables. Generally, the vegetable greenhouse uses a bamboo or steel structure frame, covered with one or more layers of thermal insulation plastic film. In this way, a greenhouse space is formed. 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. Generally, a relatively constant temperature is required, which is more conducive to the growth and maturity of off-season vegetables. However, even for vegetable greenhouses with good thermal insulation performance, due to the repeated and changeable winter weather and the sudden attack of cold currents, the temperature in vegetable greenhouses cannot The temperature is difficult to stabilize, or even not reach the temperature necessary for the growth of vegetables, which affects the growth of vegetables

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