Compressor with liquid injection cooling
First Claim
Patent Images
1. A method of operating a compressor having a casing defining a compression chamber and a rotatable drive shaft configured to drive the compressor, the method comprising:
- compressing a working fluid in the compression chamber such that(1) the compressed fluid is expelled from the compression chamber at an outlet pressure of between 325 and 6000 psig, and(2) a single stage pressure ratio of the compressor is at least 15;
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injecting liquid coolant into the compression chamber during said compressing.
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Abstract
A positive displacement rotary compressor is designed for near isothermal compression, high pressure ratios, high revolutions per minute, high efficiency, mixed gas/liquid compression, a low temperature increase, a low outlet temperature, and/or a high outlet pressure. Liquid injectors provide cooling liquid that cools the working fluid and improves the efficiency of the compressor. A gate moves within the compression chamber to either make contact with or be proximate to the rotor as it turns.
886 Citations
44 Claims
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1. A method of operating a compressor having a casing defining a compression chamber and a rotatable drive shaft configured to drive the compressor, the method comprising:
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compressing a working fluid in the compression chamber such that (1) the compressed fluid is expelled from the compression chamber at an outlet pressure of between 325 and 6000 psig, and (2) a single stage pressure ratio of the compressor is at least 15;
1; andinjecting liquid coolant into the compression chamber during said compressing. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 41)
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26. A compressor comprising:
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a casing with an inner wall defining a compression chamber; a positive displacement compressing structure movable relative to the casing to compress a working fluid in the compression chamber; a rotatable drive shaft configured to drive the compressing structure; and at least one liquid injector connected to the casing and configured to inject liquid coolant into the compression chamber during compression of the working fluid, wherein a single stage pressure ratio of the compressor is at least 15;
1, andwherein the compressor is configured and shaped to compress the working fluid such that the working fluid is compressed into a compressed fluid that is expelled from the compression chamber at an outlet pressure of between 325 and 6000 psig. - View Dependent Claims (27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 42)
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43. A method of operating a positive displacement rotary compressor, the compressor having:
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a casing with a cylindrical in inner wall defining a compression chamber, the compression chamber having an inlet port and an outlet port; a rotatable drive shaft mounted to the casing for rotation relative to the casing; a rotor connected to the drive shaft for rotation with the drive shaft relative to the casing to compress a working fluid in the compression chamber, the rotor having a sealing portion that corresponds to a curvature of the inner wall and has a constant radius, and a non-sealing portion having a variable radius, the method comprising; rotating the drive shaft and rotor, thereby compressing a working fluid in the compression chamber; and expelling compressed working fluid from the compression chamber, wherein the compressed working fluid is expelled from the compression chamber at an outlet pressure of between 325 and 6000 psig, and wherein a single stage pressure ratio of the compressor is at least 15;
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44. A positive displacement rotary compressor comprising:
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a casing with a cylindrical in inner wall defining a compression chamber, the compression chamber having an inlet port and an outlet port; a rotatable drive shaft mounted to the casing for rotation relative to the casing; a rotor connected to the drive shaft for rotation with the drive shaft relative to the casing to compress a working fluid in the compression chamber, the rotor having a sealing portion that corresponds to a curvature of the inner wall and has a constant radius, and a non-sealing portion having a variable radius, wherein the compressor is configured and shaped to compress the working fluid such that the compressed working fluid is expelled from the compression chamber at an outlet pressure of between 325 and 6000 psig, and such that a single stage pressure ratio of the compressor is at least 15;
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Specification