Refrigerating fluid loop, notably for an air conditioning installation for a vehicle passenger compartment
AssigneeValco Climatisation
InventorsVincent Pomme, Bruno Hamery
Life of this patent
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Abstract
The invention concerns a refrigerating fluid cycle comprising the standard compressor, condenser, liquid/gas separating reservoir, expansion device and evaporator. The invention is characterized in that a pre-expansion device is placed between the condenser and the reservoir, so as to reduce the fluid pressure until it reaches its saturation vapor pressure. The reservoir can thus contain a variable amount of liquid to compensate the fluid losses in the cycle by maintaining the sub-cooling temperature constant thereby enabling the heat load to be absorbed by the condenser.
Claims15
A refrigerating fluid loop, for an air conditioning system comprising a compressor able to raise the pressure of the fluid to the gaseous state, a condenser able to condense the fluid compressed by the compressor and to sub-cool it to the liquid state, a separating reservoir able to separate the residual gas from the fluid in the liquid state coming from the condenser, a pressure reducer able to reduce the pressure of the fluid leaving the reservoir and an evaporator able to cause the fluid coming from the pressure reducer to change from the liquid state to the gaseous state before it returns to the compressor, and a preliminary pressure reducer interposed between the condenser and the reservoir, able to reduce the pressure of the fluid to its saturation vapour pressure.
A refrigerating fluid loop for an air conditioning system comprising:
- a separating reservoir for separating the residual gas from the fluid in the liquid state coming from the condenser,
- a preliminary pressure reducer disposed between the condensor and the separating reservoir for reducing the pressure of the fluid to its saturation vapor pressure, wherein the preliminary pressure reducer is placed directly at an inlet of the reservoir and is connected to the condenser by a connecting conduit.
Dependencies are inferred from the claim text.