Ventilating device for building

Abstract

The invention discloses a ventilating device for a building. The ventilating device for the building comprises a ventilating cupboard and an exhaust fan; distributing pipes which are arranged horizontally are arranged in the ventilating cupboard; the lower ends of the distributing pipes are connected with a plurality of groups of air inducing hoses; the upper ends of the distributing pipes are connected with one end of a first air inducing pipeline; one end, far away from the distributing pipes, of the first air inducing pipeline extends to the outer side of the ventilating cupboard and is connected with a second air inducing pipeline; one end, far away from the first air inducing pipeline, of the second air inducing pipeline is connected with an air inducing outlet pipeline; and a secondair supply pipeline is fixedly mounted on the inner wall of the ventilating cupboard. When the ventilating device is used, external air can be induced indoors through an air supply inlet pipeline; theexternal air exchanges heat with the air in the second air inducing pipeline through a heat exchange device, so that the temperature of the air which is fed indoors through the second air supply pipeline is close to room temperature; and therefore, indoor heat loss is reduced.

Description

technical field [0001] The invention relates to the technical field of building equipment, in particular to a building ventilation device. Background technique [0002] Ventilation device, also known as fume hood or fume hood, is a large-scale equipment in a chemical laboratory. Its purpose is to reduce the contact between experimenters and harmful gases. The fume hood is a primary barrier to protect personnel from toxic chemical fumes. It can be used as an important safety back-up equipment, such as when the chemical experiment process fails, and when chemical smoke, dust and toxic gases are generated, it can effectively discharge harmful gases to protect the staff and the laboratory environment. However, during the use of the fume hood, the laboratory sometimes needs to use air conditioners or other equipment for cooling or heating. At this time, the fume hood will attract a large amount of energy in the laboratory to the outside of the net, resulting in a large waste of e...

AI Technical Summary

Problems solved by technology

However, during the use of the fume hood, the laboratory sometimes needs to use air conditioners or other equipment for cooling or heating. At this time, the fume hood will attract a large amount of energy in the laboratory to the outside of the net, resulting in a large waste of energy and causing The indoor cooling or heating effect is not obvious. When the doors and windows on the fume hood are directly closed, the pressure inside the fume hood will be lower than the indoor pressure. It is difficult to open the doors and windows on the fume hood, which is not conducive to personnel operation.

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