An external fresh air introduction device

Abstract

The invention discloses an external fresh air introduction device, which comprises an outdoor air inlet, an air pipe and a multi-stage press-type adjustable air volume air outlet sequentially connected along the air inlet direction. The multi-stage press-type adjustable air volume air outlet includes a front air deflector connected to the air inlet, a pressing assembly connected at one end to the front air deflector, and a rear air deflector connected to the other end of the pressing assembly. The pressing assembly includes an outer ring sleeve, an end cap arranged at one end of the outer ring sleeve, a rotating inner sleeve arranged in the outer ring sleeve, a pressing rod and an elastic component arranged in the rotating inner sleeve. Through the pressing action, the guide protrusion on the pressing rod can be positioned on the upper guiding rib on the inner wall of the rotating inner sleeve, so that the pressing rod can be stretched and positioned in the axial direction, and the rear air deflector is fully closed relative to the front air deflector , half-open and fully-open states. The invention utilizes the pressing component to conveniently adjust the size of the air opening, satisfies the supply of fresh air for people to the greatest extent, effectively utilizes the natural wind, and is energy-saving and environment-friendly.

Description

Technical field [0001] The invention belongs to the fields of heating, gas supply, ventilation and air conditioning, and specifically relates to an external fresh air introduction device. Background technique [0002] Modern buildings have strong airtightness, and people spend most of their work and life indoors. Therefore, people pay more and more attention to the quality of the indoor environment. Maintaining good ventilation is very important to human health. Therefore, various types of vents installed in the building wall are important components for the introduction of outdoor fresh air, and they play an increasingly important role in the field of building ventilation. [0003] The utility model CN ​​201184666Y vent provides a vent that can distribute air volume. The air outlet can control the opening angle of the deflector by adjusting the limiting screw to achieve the purpose of air distribution. However, the wind from the device directly faces the user, which easily makes...

AI Technical Summary

Problems solved by technology

However, the device is bulky and not convenient enough. At the same time, the air volume cannot be adjusted, and the operation is relatively complicated.

And although it saves energy, it still consumes a lot of energy

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