JPS5525719A - Protection device for in-room abnormal negative pressure - Google Patents
Protection device for in-room abnormal negative pressureInfo
- Publication number
- JPS5525719A JPS5525719A JP9803578A JP9803578A JPS5525719A JP S5525719 A JPS5525719 A JP S5525719A JP 9803578 A JP9803578 A JP 9803578A JP 9803578 A JP9803578 A JP 9803578A JP S5525719 A JPS5525719 A JP S5525719A
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- room
- dynamic
- pressure inside
- negative pressure
- 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.)
- Granted
Links
Landscapes
- Central Air Conditioning (AREA)
Abstract
PURPOSE: To simplify an air conditioning equipment and to keep the negative pressure inside a room within a fixed range by fitting auto-operative movable vanes in an air feed duct system.
CONSTITUTION: When the pressure inside a ventilation room 1 has decreased below a predetermined negative pressure, the dynamic pressure inside an air feed duct 5 decreases, and the decrease in the dynamic pressure is transmitted through a dynamic-pressure introduction duct 23 and a dynamic-pressure blow-off port 24 to movable vanes 22, which are opened by high atmospheric pressure. The outside air is introduced through an outside-air introduction duct 21 into the air feed duct 5, to return the pressure inside the room 1 to a predetermined nagetive pressure. Because the vanes 22 are opened and closed by the balance between the dynamic pressure inside the duct 5 and the atmospheric pressure, the air conditioning equipment is simplified and the negative pressure inside the room is kept constant.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9803578A JPS5823537B2 (en) | 1978-08-10 | 1978-08-10 | Indoor abnormal negative pressure prevention device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9803578A JPS5823537B2 (en) | 1978-08-10 | 1978-08-10 | Indoor abnormal negative pressure prevention device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5525719A true JPS5525719A (en) | 1980-02-23 |
| JPS5823537B2 JPS5823537B2 (en) | 1983-05-16 |
Family
ID=14208781
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9803578A Expired JPS5823537B2 (en) | 1978-08-10 | 1978-08-10 | Indoor abnormal negative pressure prevention device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5823537B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5235483A (en) * | 1975-09-13 | 1977-03-18 | Ikeda Denki Kk | Discharge lamp lighting circuit |
| JPS5235482A (en) * | 1975-09-13 | 1977-03-18 | Ikeda Denki Kk | Discharge lamp lighting circuit |
| JPS59161623A (en) * | 1984-02-27 | 1984-09-12 | Hitachi Ltd | Airflow quantity control device for air duct |
| JP2010243439A (en) * | 2009-04-09 | 2010-10-28 | Daiichi Jitsugyo Viswill Co Ltd | Visual inspection apparatus |
| JP2022034851A (en) * | 2020-08-19 | 2022-03-04 | 株式会社日立プラントサービス | Air exhaust/supply system and clean room system |
-
1978
- 1978-08-10 JP JP9803578A patent/JPS5823537B2/en not_active Expired
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5235483A (en) * | 1975-09-13 | 1977-03-18 | Ikeda Denki Kk | Discharge lamp lighting circuit |
| JPS5235482A (en) * | 1975-09-13 | 1977-03-18 | Ikeda Denki Kk | Discharge lamp lighting circuit |
| JPS5713119B2 (en) * | 1975-09-13 | 1982-03-15 | ||
| JPS5713120B2 (en) * | 1975-09-13 | 1982-03-15 | ||
| JPS59161623A (en) * | 1984-02-27 | 1984-09-12 | Hitachi Ltd | Airflow quantity control device for air duct |
| JPS6360295B2 (en) * | 1984-02-27 | 1988-11-24 | ||
| JP2010243439A (en) * | 2009-04-09 | 2010-10-28 | Daiichi Jitsugyo Viswill Co Ltd | Visual inspection apparatus |
| JP2022034851A (en) * | 2020-08-19 | 2022-03-04 | 株式会社日立プラントサービス | Air exhaust/supply system and clean room system |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5823537B2 (en) | 1983-05-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS5525719A (en) | Protection device for in-room abnormal negative pressure | |
| ES464347A1 (en) | Air distribution box | |
| JPS5426055A (en) | Air conditioning ventilation fan | |
| JPS5718497A (en) | Eddy flow fan | |
| JPS5228152A (en) | Controlling circuit for revolution of fan for air conditioning system | |
| JPS5367950A (en) | Ventilation system | |
| JPS55150443A (en) | Ventilating method for tunnel | |
| JPS547751A (en) | Ventilating system for air conditioner | |
| JPS5279356A (en) | Discharge pressure control system of air conditioner | |
| JPS547750A (en) | Control system for air conditioner | |
| JPS53119201A (en) | Pressure regulating method for exhaust gas of sintering | |
| JPS5642038A (en) | Air conditioning | |
| JPS51147808A (en) | Continuous conditioned air supplier for rolling stock | |
| JPS5341097A (en) | Air conditioning exhaust system | |
| JPS541950A (en) | Air conditioning and ventilating system | |
| JPS5231417A (en) | Movable air conditioner | |
| JPS53148837A (en) | Air conditioner | |
| JPS52141041A (en) | Air conditioning system | |
| GB1436321A (en) | Apparatus for ventilating an underground pit accomodating a gas pressure control governor associated with a gas main | |
| JPS55155129A (en) | Air conditioning machine | |
| JPS53148838A (en) | Air conditioner | |
| JPS5353145A (en) | Air conditioner | |
| JPS5316453A (en) | Air conditioning system | |
| JPS5291546A (en) | Exhausting apparatus for air conditioning | |
| JPS54117141A (en) | Ventilating apparatus for duct |