Title:
GAS PRESSURE CONTROLLER
Document Type and Number:
WIPO Patent Application WO/1989/006769
Kind Code:
A1
Abstract:
The apparatus of the present invention is produced for the purpose of controlling a gas pressure by making the most of characteristics of both of gas and liquid. Gas is by far lighter than liquid and they never exist in mixture. In other words, liquid cannot keep gas at at its intermediate portion. On the other hand, a condition in which gas can bubble inside liquid is that a gas pressure is equal to or higher than a liquid pressure. From these two characteristics the present invention evidences that it can be used as a gas pressure controller using a water column. The present invention utilizes a water column having a water pressure as a plug for separating a gas from another gas in place of a safety valve in a gas tank involving explosion hazard. This gas pressure controller bases safety solely on the material of the gas tank, and can thus produce an extremely safety gas tank. The present invention relates to a gas pressure controller capable of venting and ventilation, which can keep a predetermined gas pressure in a culture tank while providing venting and ventilation. The present invention can take the form of a multiple tank structure.
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Inventors:
NOJIMA YOUKO (JP)
NOJIMA HISATAKE (JP)
NOJIMA HISATAKE (JP)
Application Number:
PCT/JP1989/000003
Publication Date:
July 27, 1989
Filing Date:
January 04, 1989
Export Citation:
Assignee:
PARASIGHT YK (JP)
International Classes:
B65D90/32; F17C13/00; F17C13/02; G05D16/04; (IPC1-7): F17C13/00
Foreign References:
| JPS50115319A | 1975-09-09 | |||
| JPS586167B2 | 1983-02-03 |
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