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Single Stage High Pressure Compressor

IP.com Disclosure Number: IPCOM000078072D
Original Publication Date: 1972-Nov-01
Included in the Prior Art Database: 2005-Feb-25
Document File: 2 page(s) / 25K

Publishing Venue

IBM

Related People

Gaston, CA: AUTHOR

Abstract

Disclosed is a system with no minimum cylinder volume, permitting unlimited compression in a single stage. Ordinary piston compressors are limited in compression ratio to the ratio between maximum and minimum cylinder volume. Practical limits on this ratio require high-pressure compressors to be multistage.

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Single Stage High Pressure Compressor

Disclosed is a system with no minimum cylinder volume, permitting unlimited compression in a single stage. Ordinary piston compressors are limited in compression ratio to the ratio between maximum and minimum cylinder volume. Practical limits on this ratio require high-pressure compressors to be multistage.

As shown, the compressor consists of a variable-volume lower chamber with a gas inlet valve, a liquid valve connecting a fixed-volume upper chamber, and a high-pressure gas outlet from the upper chamber. The gas inlet valve is a simple check valve. The liquid valve is also a check valve, but it is held open by a float.

The volume change in the lower chamber is accomplished by a metal bellows. Alternately, it may be accomplished by a metal diaphragm, rolling diaphragm, sliding piston or other convenient means.

The figure depicts the lower chamber at minimum volume with no pressure. As it starts to expand, liquid flows thru the liquid valve until the liquid level in the upper chamber drops to allow the float-controlled liquid valve to close. When the liquid valve closes, pressure in the lower chamber drops instantly and gas is drawn in thru the gas valve. When the lower chamber reaches maximum volume and reverses direction, the gas valve seals and compression begins. When the gas is compressed to the pressure in the upper chamber, it forces open the liquid valve and bubbles into the upper chamber. The compression stroke of t...