Local air cleaner

A local air cleaning apparatus comprising:

• a pair of push hoods each including an air flow opening face that blows out a cleaned uniform air flow;
• and
• a guide provided on a side of each of the pair of push hoods having the air flow opening face side and extending from the side of each of the pair thereof having the air flow opening face to a downstream side of the uniform air flow to form an opening face at an end portion of the downstream side,
• in which the opening faces of the pair of guides are spaced apart from and opposite to each other to form an open region between the opening faces of the each guide;
• and the cleaned uniform air flows blown out from the each air flow opening face collide with each other inside the open region to flow outside the open region, so as to cause cleanliness to be higher inside the guides and inside the open region than other regions, wherein
• the local air cleaning apparatus comprises at least one of a device for measuring pressures inside the guides and the push hoods, a device for measuring the cleanliness inside the guides or of the open region, and a device for measuring a gap area between the opening faces of the guides;
• and
• to ensure the cleanliness from a result of the measurement, the local air cleaning apparatus controls such that a flow velocity of the cleaned uniform air flows blown out from the air flow opening faces can be decelerated or accelerated.

A local air cleaning apparatus comprising:

• a pair of push hoods each including an air flow opening face that blows out a cleaned uniform air flow;
• and
• a guide provided on a side of one of the pair of push hoods having the air flow opening face and extending from the side of one of the pair thereof having the air flow opening face to a downstream side of the uniform air flow to form an opening face at an end portion of the downstream side,
• in which the opening face of the guide is spaced apart from and opposite to the air flow opening face of the push hood not provided with the guide to form an open region between the opening face of the guide and the air flow opening face of the push hood not provided with the guide;
• and
• the cleaned uniform air flows blown out from the each air flow opening face collide with each other inside the open region to flown outside the open region, so as to cause cleanliness to be higher inside the guide and inside the open region than other regions, wherein
• the local air cleaning apparatus comprises at least one of a device for measuring pressures inside the guide and inside the push hoods, a device for measuring the cleanliness inside the guide or of the open region, and a device for measuring a gap area between the opening face of the guide and the push hood not provided with the guide;
• and
• to ensure the cleanliness from a result of the measurement, the local air cleaning apparatus controls such that a flow velocity of the cleaned uniform air flows blown out from the air flow opening faces can be decelerated or accelerated.