Ventilating air-exchange fan with winter anti-freezing function for greenhouse

Abstract

The invention discloses a ventilating air-exchange fan with a winter anti-freezing function for a greenhouse. The ventilating air-exchange fan comprises a sealed framework, a protective casing, a central tube, a central ventilation mechanism, an anti-freezing heating-up mechanism, an air passage connecting mechanism and a wind direction regulating mechanism, wherein the protective casing is mounted in the middle of the sealed framework, the central tube is arranged in the middle of the protective casing, the central ventilation mechanism is mounted in the middle of the central tube, the anti-freezing heating-up mechanism is arranged at the outer side of the central ventilation mechanism, the air passage connecting mechanism is connected to the outer side of the central tube, and the wind direction regulating mechanism is mounted in the middle of the outer side of the air passage connecting mechanism. According to the ventilating air-exchange fan with the winter anti-freezing function for the greenhouse, the global ventilating air-exchange fan is mounted in the protective casing and is prevented from being eroded by outside surroundings, the improvement of safety and prolongation ofservice life of the ventilating air-exchange fan are facilitated, meanwhile, circulating exchanged air can be heated through the anti-freezing heating-up mechanism, and the condition that a temperature of the greenhouse is lowered due to the fact that outside air is sucked in the greenhouse during air exchanging is prevented.

Description

Technical field [0001] The invention relates to the technical field of ventilation fans for greenhouses, in particular to a ventilation fan for greenhouses with antifreeze function in winter. Background technique [0002] Ventilation fans are air-conditioning appliances that are driven by a motor to rotate the blades to drive the air flow to exchange indoor and outdoor air. [0003] The purpose of the ventilation fan exhaust is to remove the dirty air in the room, adjust the temperature, humidity and sensory effects. When the greenhouse is planted, because the greenhouse is a closed thermal insulation environment, the growth of plants will change the air content in the greenhouse. The greenhouse can maintain a balanced environment, and ventilation fans need to be used to circulate and exchange the air in the greenhouse. Therefore, the ventilation fans play an important role in greenhouse planting. [0004] Greenhouse planting needs to keep the internal temperature constant, especial...

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Problems solved by technology

[0005] The object of the present invention is to provide a ventilation fan for greenhouses with antifreeze function in winter, to solve the problem that the existing ventilation fans for greenhouses do not have a temperature rise and antifreeze structure in the background technology, and the external cold air will be sucked in during ventilation. Greenhouses cause the temperature of the greenhouse to drop, which is not conducive to plant growth. At the same time, general ventilation fans are exposed structures, which are easily affected by external objects, and have low safety and service life. Moreover, there is no wind direction adjustment structure, so it is difficult to adjust the wind direction and use flexibility. lower problem

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