Ventilation equipment - kankisetsubi

Japanese: 換気設備 - かんきせつび

Equipment for exchanging air inside a building and keeping the air clean. There are two types of ventilation: natural ventilation, which uses wind power and the temperature difference between indoors and outdoors, such as exhaust pipes and exhaust hoods, and forced ventilation, which uses blowers and ventilators. The former is called natural ventilation, and the latter is called mechanical ventilation. Mechanical ventilation equipment includes type 2 ventilation equipment (also called forced ventilation), which uses a blower to blow outside air into the room and the exhaust air is naturally discharged from the exhaust vent; type 3 ventilation equipment (also called suction ventilation), which uses a blower to suck out the air inside the room and the outside air naturally flows in from the intake vent; and type 1 ventilation equipment (also called push-pull ventilation), which uses a blower for both intake and exhaust. Type 1 ventilation equipment is installed for ventilation in office buildings and factories, while type 3 ventilation equipment using ventilators is installed for ventilation in kitchens and toilets in homes. In the kitchen, a ventilation hood is installed above the range, and a ventilator is attached to it to exhaust cooking odors and water vapor outside to maintain a good indoor environment.

Source: Encyclopaedia Britannica Concise Encyclopedia About Encyclopaedia Britannica Concise Encyclopedia Information

Japanese:

建物内の空気を入替えて，室内の空気を清浄に保つための設備。排気筒や排気フードなどのように，風力や室内外の温度差によって自然に換気するものと，送風機や換気扇を用いて強制的に換気するものとがあり，前者を自然換気，後者を機械換気という。機械換気設備には，送風機によって室内に外部の空気を吹込み，排気は排気口から自然に排出される第2種換気設備 (押込み換気ともいう) ，送風機によって室内の空気を吸出し，給気口から外気が自然に流入する第3種換気設備 (吸出し換気ともいう) ，給気も排気もともに送風機による第1種換気設備 (プッシュプル換気ともいう) とがある。オフィスビルや工場などの換気には第1種換気設備が設けられるが，住宅の台所や便所などの換気には，換気扇を用いた第3種換気設備をつける。台所では，レンジの上方に換気用フードを設け，これに換気扇をつけて，炊事の臭気や水蒸気を戸外に排出し，室内の環境を良好に保つ必要がある。

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