Regenerative refrigeration system with mixed refrigerants
AssigneeVortex Aircon, Inc.
InventorsYoung I. Cho, Cheolho Bai
Life of this patent
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Abstract
A regenerative type of refrigeration system recirculates a mixture of R-134a, R-32 and R-125 through first and second series condensers. A first vortex tube is connected to the inlet of the first condenser and a second vortex tube is connected at the outlet of the first condenser to provide a vapor path from a compressor through the condensers to an expansion device and evaporator. The liquid inlet of a first vortex tube and a liquid outlet of a second vortex tube are connected together to define a closed recirculation path around the first condenser for liquified R-134a.
Claims31
A refrigeration system comprising:
- a compressor;
- a condenser having an input and an output;
- an expansion device;
- an evaporator, wherein said compressor, said condenser, said expansion device, and said evaporator are connected in a closed circuit and a mixture of at least a first refrigerant fluid having a first boiling point and a second refrigerant fluid having a second boiling point is circulated around said closed circuit;
- a separator connected to said output of said condenser, said separator having an inlet and a first outlet in series with said closed circuit, and having a second outlet;
- and
- a closed regeneration path connected to said second outlet of said separator and connected to said input of said condenser, said closed regeneration path recirculating a condensed fluid of one of said refrigerant fluids.
A refrigeration system comprising:
- a compressor;
- a condenser having an input and an output;
- an expansion device;
- an evaporator, wherein said compressor, said condenser, said expansion device, and said evaporator are connected in a closed circuit and a mixture of at least a first refrigerant fluid having a first boiling point and a second refrigerant fluid having a second boiling point are circulated around said closed circuit;
- a liquid-vapor separator connected to said output of said condenser, said separator having an inlet and vapor outlet connected in series with said closed circuit, and having a liquid outlet;
- a closed regeneration path connected to said liquid outlet of said liquid-vapor separator and connected to said input of said condenser, said closed regeneration path recirculating a condensed fluid of one of said refrigerant fluids;
- a valve connected in series with said closed regeneration path;
- and
- a pump connected in series with said closed regeneration path.
The method of operating a refrigeration system, said system having a closed circuit including a compressor, a first condenser having an inlet, a liquid-vapor separator having a liquid outlet, a second condenser, an expansion device, and an evaporator, said system further having a closed regeneration path connected to said liquid outlet of said liquid-vapor separator and connected to said input of said first condenser, said method comprising the acts of:
- circulating a mixture of at least a first refrigerant fluid having a first boiling point and a second refrigerant fluid having a second boiling point around said closed circuit;
- partially liquifying at least one of said refrigerant fluids in said first condenser;
- recirculating said at least one liquified refrigerant fluids in said closed recirculation path;
- passing another of said at least one refrigerant fluids through said second condenser, while said another of said at least one refrigerant fluids is mostly in a vapor state;
- and
- partially liquifying said another of said at least one of said refrigerant fluids in said second condenser.
Dependencies are inferred from the claim text.