Roof ventilating device

Abstract

The invention discloses a roof ventilating device, and belongs to the technical field of house ventilation. The roof ventilating device is characterized by comprising a window frame and a sash; the window frame comprises a front border, a rear border and a side border fixedly connected between the front border and the rear border, a pit is formed in the front portion of the side border and internally provided with guide rails, and racks are arranged in the guide rails, and supports are arranged at the two sides of the side border and each provided with a bearing with a vertical base; the sash comprises a front end and a rear end, gears are arranged at the front end of the sash, and a main shaft is arranged at the front end of the gravity center of the sash and is arranged in the bearings with the vertical bases. The roof ventilating device has the advantages that the sash can be opened or closed automatically and can rotate around the main shaft under the action of an electric lifting rod to be opened, the side border is designed to be provided with the pit structure, the front end of the sash can slide in the pit, the dead-angle ventilation mode can be achieved, and ventilation speed and efficiency are high.

Description

Technical field [0001] The invention relates to the technical field of house ventilation, in particular to a roof ventilation device. Background technique [0002] In the process of chemical experiments, various unpleasant, corrosive, toxic or explosive gases are often produced. If these harmful gases are not discharged outside in time, they will cause air pollution in the chemical laboratory and affect the experimenters. Health and safety; affect the accuracy and service life of instruments and equipment, therefore, laboratory ventilation is an indispensable part of laboratory design. In order to prevent laboratory staff from inhaling or swallowing some toxic, pathogenic or unidentified toxic chemicals and organisms, the laboratory should have good ventilation. Generally, the ventilation of chemical laboratories is often through doors and windows to indoor and outdoor The air is exchanged, and unpleasant, corrosive, and toxic gases are replaced from the doors and windows. This...

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Problems solved by technology

[0002] In the process of chemical experiments, various unpleasant, corrosive, toxic or explosive gases are often produced. If these harmful gases are not discharged outside in time, they will cause air pollution in the chemical laboratory and affect the experimenters. health and safety; affects the accuracy and service life of instruments and equipment, therefore, laboratory ventilation is an indispensable part of laboratory design

In order to prevent laboratory workers from inhaling or swallowing some toxic, pathogenic or toxic chemicals and organisms, the laboratory should have good ventilation. Usually, the ventilation of chemical laboratories is often through doors and windows to the indoor and outdoor. The air is exchanged, and the smelly, corrosive, and toxic gases are replaced from the doors and windows. This replacement method is easy to pollute the aisles or office areas in non-experimental areas

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