Rearrangeable partial environmental control device

• US 4,549,472 A
• Filed: 02/15/1984
• Issued: 10/29/1985
• Est. Priority Date: 09/29/1983
• Status: Expired due to Term

• Current Assignee: Hitachi, Ltd., Hitachi Plant Engineering & Construction Co., Ltd. (Hitachi, Ltd.)
• Original Assignee: Hitachi, Ltd., Hitachi Plant Engineering & Construction Co., Ltd. (Hitachi, Ltd.)
• Inventors: Suzuki, Tomio, Yamagami, Kazuo, Yoshitomi, Tatsuo, Takizawa, Teruo, Nakagawa, Yoichi, Takahashi, Kozo, Kawai, Hidenao, Endo, Mitsushi, Sahara, Teruyoshi, Kaizyo, Shuichi, Nagatani, Yoshiteru, Hayakawa, Noriyuki, Taniguchi, Toshiaki
• Primary Examiner(s): Joyce, Harold
• Application Number:
  US06/580,387
• Time in Patent Office: 622 Days
• Field of Search: 55/385 A, 98/33 R, 98/33 A, 98/36, 98/40 D, 98/115 R, 98/115 LH
• US Class Current: 454/187
• CPC Class Codes: F24F 13/28 Arrangement or mounting of filters
• CPC Class Codes: F24F 3/167 Clean rooms, i.e. enclosed spaces in which a uniform flow of filtered air is distributed air distribution by perforated walls F24F7/10
• CPC Class Codes: F24F 7/10 with air supply, or exhaust, through perforated wall, floor or ceiling outlet members for directing or distributing air into rooms or spaces, e.g. ceiling air-diffusers F24F13/06

Abstract

The present invention relates to an air-conditioning and an environmental control device for manufacturing plants of integrated circuits, chemicals and foods, hospitals, etc. where clean air is required. In this environmental control device, controlled air blows out from one side and is absorbed into the other side of the room. The blowing surface and the absorbing surface are divided on the basis of the predetermined module. Ventilating units are formed in a suitable size to conform to the module. Because of the construction, the controlling system of temperature or cleanliness of the air in the environmental control room can be rearranged to an optional one by replacing or changing positions of the ventilating units. Even if a controlling system is rearranged to an optional one, the room should be divided into a supply chamber, a mixing chamber, an environmental control chamber and a return chamber from one side to the opposite side of the room, so that air conditioned can flow as required. Conditioned air enters the supply chamber, and air from the supply chamber and air from the return chamber are mixed in the mixing chamber. The mixed air passes through the ventilating units contained in the mixing chamber to be supplied into the environmental control chamber. The ventilating units have a fan and a high efficiency particulate air (HEPA) filter.

Claims

1. A rearrangeable partial environmental control device wherein a room is divided into a supply chamber connected to a air conditioner, a mixing chamber, an environmental control chamber and a return chamber, which is connected to said mixing chamber, from one side to the opposite side of said room, said control device comprising in combination a first lattice with spaces arranged between said supply chamber and said mixing chamber, a second lattice with spaces arranged between said mixing chamber and said environmental control chamber, a third lattice with spaces arranged between said environmental control chamber and said return chamber, ventilating units removably installed in a number of said spaces of said second lattice, lids removably mounted in remaining spaces of said second lattice, absorbing boards removably provided in a number of spaces of said third lattice to absorb air from said environmental control chamber into said return chamber and lids removably mounted in remaining spaces of said third lattice, conditioned air from said supply chamber and circulating air from said return chamber being mixed in said mixing chamber and air from said ventilating units being blown to predetermined positions of said environmental control chamber.

2. The rearrangeable partial environmental control device of claim 1, wherein said ventilating units have a filter case with an air inlet and a diffusing chamber with an inlet arranged on said air inlet side of said filter case having a narrower width than that of said filter case and a fan case arranged on said air inlet side of said diffusing chamber and formed with a narrower width than that of said diffusing chamber.

3. The rearrangeable partial environmental control device of claim 1, wherein said first lattice is formed in lattice work of which some spaces are provided with dampers and remaining spaces are closed with lids.

4. The rearrangeable partial environmental control device of claim 1, wherein air from said ventilating units is blown to predetermined positions of said environmental control chamber controlled by a detector which makes signals to control the air supply in said ventilating units and/or the air absorption ratio of conditioned air from said supply chamber and circulating air from said return chamber.

5. The rearrangeable partial environmental control device of claim 1, wherein casings of said ventilating units are removably mounted on said second lattice from said environmental control chambers side, and a fan, diffusing vanes and a filter can be successively arranged in said casing from said side of said environmental control member.