JPS5452313A - Room pressure control system - Google Patents
Room pressure control systemInfo
- Publication number
- JPS5452313A JPS5452313A JP11835777A JP11835777A JPS5452313A JP S5452313 A JPS5452313 A JP S5452313A JP 11835777 A JP11835777 A JP 11835777A JP 11835777 A JP11835777 A JP 11835777A JP S5452313 A JPS5452313 A JP S5452313A
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- room
- pressure control
- air
- chamber
- 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
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
- Control Of Positive-Displacement Pumps (AREA)
Abstract
PURPOSE: To reduce cost by making use of pressure difference between the room pressure and the vacuum chamber pressure to operate pressure control valve in case of the medical experiments on men under low pressure or high pressure atmosphere in the room.
CONSTITUTION: When vacuum pump 8 is driven to suck out air in vacuum chamber 7, air in the room is also sucked out through port 12 and valve seat 13 of pressure controllers 9, 10. Due to this effect, defferential pressure is generated by orifice 15 between inside of pressure controller 9, 10 and main and sub chambers 1, 2, and air signal is sent ot pressure control valves 5, 6 from port 17 so that pressure control valves 5, 6 are operated and opened by differential pressre between pressure of air signal and room pressure of each chamber 1, 2 serving as dirving force. In this case, reducing speed of room pressure in each chamber 1, 2 is controlled corresponding to the opening of orifice 27 operated by knob 28
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11835777A JPS5452313A (en) | 1977-09-30 | 1977-09-30 | Room pressure control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11835777A JPS5452313A (en) | 1977-09-30 | 1977-09-30 | Room pressure control system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5452313A true JPS5452313A (en) | 1979-04-24 |
| JPS6114356B2 JPS6114356B2 (en) | 1986-04-18 |
Family
ID=14734694
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11835777A Granted JPS5452313A (en) | 1977-09-30 | 1977-09-30 | Room pressure control system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5452313A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60113079A (en) * | 1983-11-24 | 1985-06-19 | Hitachi Plant Eng & Constr Co Ltd | Negative pressure chamber control equipment |
| US9044541B2 (en) | 2005-12-02 | 2015-06-02 | C. R. Bard, Inc. | Pressure activated proximal valves |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63168538A (en) * | 1986-12-29 | 1988-07-12 | Ryohei Ishida | Fog generator for analysis sample |
| JPH02128563U (en) * | 1989-03-28 | 1990-10-23 |
-
1977
- 1977-09-30 JP JP11835777A patent/JPS5452313A/en active Granted
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60113079A (en) * | 1983-11-24 | 1985-06-19 | Hitachi Plant Eng & Constr Co Ltd | Negative pressure chamber control equipment |
| JPS6215758B2 (en) * | 1983-11-24 | 1987-04-09 | Hitachi Plant Eng & Constr Co | |
| US9044541B2 (en) | 2005-12-02 | 2015-06-02 | C. R. Bard, Inc. | Pressure activated proximal valves |
| US9943678B2 (en) | 2005-12-02 | 2018-04-17 | C. R. Bard, Inc. | Pressure activated proximal valves |
| US11305102B2 (en) | 2005-12-02 | 2022-04-19 | C. R. Bard, Inc. | Pressure activated proximal valves |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6114356B2 (en) | 1986-04-18 |
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