Volume ratio control system for a compressor
AssigneeTyco Fire & Security GmbH
InventorsPaul Nemit, Jr., Angela Marie Comstock, Franklin Aaron Montejo, Colin Campbell
Life of this patent
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Abstract
A volume ratio control system for a compressor includes a chamber formed within a housing of the compressor, where the chamber is in fluid communication with a high pressure side of the compressor, a piston disposed within the chamber, where the piston includes a cavity in fluid communication with a low pressure side of the compressor, and a biasing device disposed within the chamber and configured to enable movement of the piston in response to a pressure differential between the low pressure side of the compressor and the high pressure side of the compressor falling below a threshold value.
Claims20
A volume ratio control system for a compressor, comprising:
- a housing of the compressor, wherein the housing comprises a chamber formed therein, and a portion of the chamber is in fluid communication with a discharge side of the compressor;
- and
- a piston disposed within the chamber, wherein the piston comprises a cavity in fluid communication with a suction side of the compressor, an active volume of the cavity is variable, the portion of the chamber and the cavity are fluidly separate from one another, and the volume ratio control system is configured to passively adjust a position of the piston within the chamber based on a pressure differential between the portion of the chamber and the cavity of the piston.
A compressor for a heating, ventilation, air conditioning, and/or refrigeration (HVAC&R) system, comprising:
- a housing comprising a compression chamber;
- a rotor disposed within the housing and configured to compress a refrigerant within the compression chamber;
- and
- a volume ratio control system configured to adjust a volume ratio of the compressor, wherein the volume ratio control system comprises:
- a chamber formed within the housing, wherein the chamber comprises a first portion in fluid communication with a high pressure side of the compressor and a second portion in fluid communication with a low pressure side of the compressor;
- and
- a piston disposed within the chamber, wherein the piston comprises a cavity formed therein, an internal surface of the piston defining the cavity is in fluid communication with the low pressure side of the compressor, and an external surface of the piston is in fluid communication with the high pressure side of the compressor,
- wherein the housing comprises a plurality of openings formed therein, the plurality of openings fluidly couple the compression chamber and the chamber, the cavity is sealed from the plurality of openings, and the volume ratio control system is configured to passively adjust a position of the piston within the chamber to adjust the volume ratio of the compressor.
A volume ratio control system for a compressor, comprising:
- a housing of the compressor, wherein the housing comprises a chamber formed therein, the chamber comprises a first portion in fluid communication with a discharge side of the compressor and a second portion in fluid communication with a suction side of the compressor, the housing comprises a plurality of openings formed therein, and the plurality of openings is configured to fluidly couple the first portion of the chamber to a compression chamber defined by the housing;
- a piston disposed within the first portion of the chamber, wherein the piston comprises a cavity;
- a rod coupled to the housing, wherein the rod extends into the second portion of the chamber and into the cavity, wherein the rod defines a passage fluidly coupling the second portion of the chamber and the cavity;
- and
- a biasing device disposed within the cavity and about the rod, wherein the biasing device is configured to passively adjust a position of the piston within the chamber based on a pressure differential between the suction side of the compressor and the discharge side of the compressor to block or expose at least a subset of the plurality of openings to adjust a volume ratio of the compressor.
Dependencies are inferred from the claim text.