Air volume adjustable powerless air window

Abstract

The invention discloses an air volume adjustable powerless air window. The gravity center of the air window is located at the upper portion of a rotation shaft of the air window. When the air window is opened and used through a handle, due to the joint action of gravity torque and a reset torsion spring, the air window is in an open state when no air or breeze blows outdoors, and air can be led into a room. Due to the fact that the area of the part, at the lower portion of the rotation shaft, of the air window is larger than the area of the part, at the upper portion of the rotation shaft, ofthe air window, an upper screen window is externally arranged and a lower screen window is internally arranged, torque generated due to the outdoor air pressure is reverse to the gravity torque, the larger the outdoor air speed is, the smaller the aperture of the air window becomes, and vice versa. A window frame at the lower portion of the air window is a wing-shaped lower edge, and the acting torque of the outdoor air pressure can be increased. Through an air window limiting mechanism, the air window rotation range can be adjusted according to different requirements for the air volume. Air window opening and closing damping and noise lowering are conducted through the torsion spring and a sealing device. The device is simple and reliable, a power device and a sensor are not needed, and the air volume adjustable powerless air window is suitable for being used on a large scale in different areas in China.

Description

technical field [0001] The invention belongs to the field of indoor ventilation, and in particular relates to a non-powered transom with adjustable air volume. Background technique [0002] Buildings need fresh air to dilute indoor pollutants to specified concentrations. Insufficient fresh air volume will lead to excessive indoor pollutant content, affecting people's health and work efficiency, while excessive ventilation will lead to increased building energy consumption. Although the use of mechanical ventilation can provide stable ventilation to the room, but the energy consumption is high, it is not suitable for widespread use in our country. Therefore need to develop a kind of ventilation device that does not consume energy but still can maintain indoor fresh air volume relatively stable. [0003] An easy way to maintain a stable indoor ventilation rate is to reasonably control the opening of the windows. Existing patents and products for window opening adjustment of...

AI Technical Summary

Problems solved by technology

[0004] At present, the existing unpowered air volume adjustment windows are driven by outdoor wind pressure. Most of them use mechanical transmission components such as springs and ratchets. The outdoor wind acts on the springs to deform or rotate the ratchet wheels, thereby changing the opening of the window. It can simply and directly use the negative feedback of the outdoor wind pressure to adjust the opening of the window, and the auxiliary device is too complicated, even blocking the daylighting of the window

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