Koken Ltd.

Tomoyuki Kakinuma

Takahiro Sato

Taketo Suzuki

Kazuma Fukiura

Kozo Nitta

Yuki Fujishiro

The local air cleaning apparatuscauses a cleaned uniform air flow blown out from an air flow opening faceto collide with an air collision face W to flow outside an open region, so as to cause cleanliness to be higher inside a guideand inside the open region than other regions. Additionally, the apparatusincludes at least one of a device for measuring pressures inside the guideand inside a push hooda device for measuring the cleanliness inside the guideor of the open region, and a device for measuring a gap area between the guideand the air collision face W, and, to ensure the cleanliness from a result of the measurement, controls such that a flow velocity of the cleaned uniform air flow blown out from the air flow opening facecan be decelerated or accelerated.

Local air cleaner

An air blowing device adapted to be used in such a manner that at least two of the devices are horizontally and/or vertically aligned with each other, thereby to obtain a uniform flow of air in the downstream direction from device to device. An air-permeable front surface () is formed to the blowing device () at the downstream side of a rectifier mechanism, and side surface sections () which extend in the upstream direction of the device () are formed at both edges of the air-permeable front surface (). First ventilation holes () are distributed at the air-permeable front surface (), and second ventilation holes () are distributed at the side surface sections ().

Air blowing device

A local air cleaning apparatus () is provided with a push hood () having an air flow opening face () for blowing out a cleaned uniform air flow and a guide () provided on a side of the push hood () having the air flow opening face (), the guide () extending from the side thereof having the air flow opening face () toward a downstream side of the uniform air flow to form an opening face () at a downstream end portion thereof. The push hood () is arranged such that the uniform air flow blown out from the air flow opening face () passes through the inside of the guide () and then collides with an air collision face (W) on a downstream side of the opening face (). The opening face () of the guide () is spaced apart from and opposed to the air collision face (W) to form an open region between the opening face () and the air collision face (W). The cleaned uniform air flow blown out from the air flow opening face () collides with the air collision face (W) and flows out of the opening region, thereby allowing the inside of the guide () and the inside of the open region to have higher cleanliness than other regions.

Local air cleaning apparatus

A local air cleaning apparatus () is provided with push hoods () having an air flow opening face () for blowing out a cleaned uniform air flow and a pair of guides () provided on sides of the push hoods () having the air flow opening faces (), the guides () extending from the sides thereof having the air flow opening faces () toward downstream sides of the uniform air flows to form opening faces () at downstream-side end portions of the guides. The push hoods () are arranged such that the respective air flow opening faces () are opposed to each other. The opening faces () of the guides (), are spaced apart from and opposed to each other to form an open region between the opening faces () of the respective guides (). The cleaned uniform air flows blown out from the air flow opening faces () collide with each other in the open region to flow out of the open region so as to allow the insides of the guides () and the inside of the open region to have higher cleanliness than other regions.

Air blowing devices aligned in width direction

A purified air discharge device includes a push hood () having an air flow discharge surface () discharging a uniform purified air flow. The push hood () is provided with a lateral air discharger () for creating a purified air flow that collides against a surrounding wall that is formed as the push hood () is installed and that is situated close along the circumferential direction of the air flow discharge surface () of the push hood ().

Growing community of inventors

Tokyo, Japan

Tomoyuki Kakinuma