JPS54150842A - Ventilating and air conditioning system - Google Patents
Ventilating and air conditioning systemInfo
- Publication number
- JPS54150842A JPS54150842A JP5821178A JP5821178A JPS54150842A JP S54150842 A JPS54150842 A JP S54150842A JP 5821178 A JP5821178 A JP 5821178A JP 5821178 A JP5821178 A JP 5821178A JP S54150842 A JPS54150842 A JP S54150842A
- Authority
- JP
- Japan
- Prior art keywords
- air
- pressure difference
- control chamber
- clean zone
- damper
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Ventilation (AREA)
Abstract
PURPOSE: To prevent the polluted air from flowing into the clean zone by providing an exhaust damper at the exhaust duct of the pressure difference control chamber, whereby the air exhaustion will be larger than the air supply, so that the pressure difference in room can be maintained.
CONSTITUTION: The air fed by an air supply fan 1 is fed into a clean zone A and then transferred through a transfer duct 2 into a pressure difference control chamber B. The air transfer into the pressure difference control chamber B is performed while the pressure difference between the clean zone A is being kept with the pressure difference control damper 3. The air thus transferred into the control chamber B is exhausted after ventilated and cooled. The air exhaustion of an exhaust duct 6 is controlled by an automatic damper 7 which is controlled, in turn, by a pressure difference controller 8. The automatic damper 7 is adapted to operate to increase the air exhaustion, when the pressure difference of the control chamber B tends to become smaller. According to this structure, any adverse flow of the polluted air into the clean zone A can be prevented without increasing the ventilating air more than necessary for maintaining the pressure difference in the room.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5821178A JPS54150842A (en) | 1978-05-18 | 1978-05-18 | Ventilating and air conditioning system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5821178A JPS54150842A (en) | 1978-05-18 | 1978-05-18 | Ventilating and air conditioning system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS54150842A true JPS54150842A (en) | 1979-11-27 |
Family
ID=13077705
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5821178A Pending JPS54150842A (en) | 1978-05-18 | 1978-05-18 | Ventilating and air conditioning system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54150842A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2393799A (en) * | 2002-08-22 | 2004-04-07 | Richard Gatley | An air ventilation system for a clean room |
-
1978
- 1978-05-18 JP JP5821178A patent/JPS54150842A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2393799A (en) * | 2002-08-22 | 2004-04-07 | Richard Gatley | An air ventilation system for a clean room |
GB2393799B (en) * | 2002-08-22 | 2006-03-08 | Richard Gatley | Gas flow control systems |
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