US 7,465,225 B2Granted

Clean room unit

AssigneeTosho, Inc.

InventorsShiro Ohmura, Yoshihito Ohmura, Hideaki Hirobe, Takehiko Imura

Life of this patent

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Abstract

A clean room unit which is equipped with a work room and a clean bench unit can be independently installed inside a building, can generate an air shower in the work room, and can realize miniaturization and cost reduction. The clean room has a work room, a clean bench unit which has a work opening and has the work opening installed to look onto the work room, an air conditioning system which can perform purification and pressure control of air inside the work room and the clean bench unit and can generate an air shower in the work room, and a control unit. The air conditioning system is controlled by the control unit to switch exclusively between the air shower mode, the ventilation mode, the positively-pressurized work mode, and the negatively-pressurized work mode.

Claims13

Dependent claims

A clean room unit which is provided with a work room isolated from the exterior and a clean bench unit which has a work opening facing to the work room and is installed independently inside a building:

said clean room unit comprising:
an air conditioning system which can perform purification and pressure control of air inside the work room and clean bench unit and can generate an air shower in the work room, and
an air conditioning control means which controls the air conditioning system and can switch the air conditioning system between an air shower mode to generate an air shower in the work room and a work mode to enable specific work by making the work room positively pressurized or negatively pressurized, wherein
the clean bench unit has an open/close shutter which opens/closes the work opening and a shutter open/close detection means which detects whether this open/close shutter is open or closed, and
the air conditioning control means prohibits switching to the shower mode when it is detected by the shutter open/close detection means that the open/close shutter is open.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application: 10/546,584Filed 3 Jun 2004
Published: US 2007/0066205 A122 Mar 2007
Granted: 16 Dec 2008
Term ends: Not estimatedThe source records don’t support an estimate.

Classification5 codes

F24F 3/167
By purification, e.g. by filtering; by sterilisation; by ozonisation: clean rooms, i.e. enclosed spaces in which a uniform flow of filtered air is…
F24F 2009/005
Use of air currents for screening, e.g. air curtains: combined with a door
F24F 2011/0004
For admittance of outside air: to create overpressure in a room
F24F 2011/0005
For admittance of outside air: to create underpressure in a room, keeping contamination inside