Air conditioning pressure relief valve assembly
AssigneeGeneral Motors Corporation
InventorsGuy E. Lafalce, Michael E. Lafalce
Life of this patent
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Abstract
A pressure relief valve assembly for an air conditioning system of a vehicle includes a compressor hose block having an inlet port and an outlet port. The inlet port is for connection to a low pressure gas and the outlet port is for connection to high pressure gas of the air conditioning system. The compressor hose block also has a connecting port interconnecting the inlet port and the outlet port. The pressure relief valve assembly further includes a valve disposed in the connecting port to allow the high pressure gas to pass from the outlet port to the inlet port when a pressure of the high pressure gas reaches a predetermined level.
Claims20
A pressure relief valve assembly for an air conditioning system of a vehicle comprising:
- a compressor hose block having an inlet port and an outlet port, said inlet port for connection to a low pressure gas and said outlet port for connection to high pressure gas of the air conditioning system;
- said compressor hose block having a connecting port interconnecting said inlet port and said outlet port;
- and
- a valve disposed in said connecting port to allow the high pressure gas to pass from said outlet port to said inlet port when a pressure of the high pressure gas reaches a predetermined level.
A pressure relief valve assembly for an air conditioning system of a vehicle comprising:
- a compressor hose block having an inlet port and an outlet port, said inlet port for connection to a low pressure gas and said outlet port for connection to high pressure gas of the air conditioning system;
- said compressor hose block having a connecting port interconnecting said inlet port and said outlet port and having an opening at one end and a seat at another end opposite said opening;
- and
- a high pressure seal disposed in said connecting port adjacent said seat and a calibrated pressure relief spring disposed in said connecting port adjacent said high pressure seal to urge said high pressure seal against said seat in a closed position, said high pressure seal having an open position spaced from said seat to allow the high pressure gas to pass from said outlet port to said inlet port when a pressure of the high pressure gas reaches a predetermined level.
An air conditioning system for a vehicle comprising:
- a compressor having a first inlet and a first outlet;
- a compressor hose block mounted to said compressor and having a second inlet fluidly communicating with said first inlet of said compressor and a second outlet fluidly communicating with said first outlet of said compressor, an inlet port fluidly communicating with said second inlet and an outlet port fluidly communicating with said second outlet;
- a first conduit for carrying a low pressure gas connected to said inlet port and a second conduit for carrying a high pressure gas connected to said outlet port;
- said compressor hose block having a connecting port interconnecting said inlet port and said outlet port and having an opening at one end and a seat at another end opposite said opening;
- and
- a high pressure seal disposed in said connecting port adjacent said seat and a calibrated pressure relief spring disposed in said connecting port adjacent said high pressure seal to urge said high pressure seal against said seat in a closed position, said high pressure seal having an open position spaced from said seat to allow the high pressure gas to pass from said outlet port to said inlet port when a pressure of the high pressure gas reaches a predetermined level.
Dependencies are inferred from the claim text.