Heat pump system capable of adjusting amount of refrigerant stored in liquid receiver
AssigneeKorea Institute of Energy Research
InventorsGil Bong LEE, Young Soo LEE, Min Sung KIM, Ki Chang CHANG, Jun Hyun CHO, Ho Sang RA
Life of this patent
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Abstract
A heat pump system includes a liquid receiver valve that adjusts the amount of a refrigerant stored in a liquid receiver so that a circulation amount of the refrigerant that circulates the heat pump system can be adjusted according to a driving speed of a compressor and performance of the compressor and the heat pump system can be further improved. Also, since a plurality of liquid receiver refrigerant outlets can be selectively opened using a pressure difference between an inlet and an outlet of the compressor, active control can be performed.
Claims12
A heat pump system comprising:
- a compressor;
- a condenser;
- an expansion unit;
- and
- an evaporator, further comprising:
- a liquid receiver which is disposed so that a refrigerant condensed by the condenser flows into the liquid receiver in a direction of gravity and in which a plurality of liquid receiver refrigerant outlets are formed at sides of the liquid receiver so as to be spaced apart from each other by a predetermined gap in the direction of gravity;
- and
- a liquid receiver valve that adjusts an amount of the refrigerant discharged from the liquid receiver by selectively opening the plurality of liquid receiver refrigerant outlets based on a pressure difference between an inlet and an outlet of the compressor.
A heat pump system comprising:
- a compressor;
- a condenser;
- an expansion unit;
- and
- an evaporator,
- further comprising:
- a liquid receiver which is disposed so that a refrigerant condensed by the condenser flows into the liquid receiver in a direction of gravity and in which a plurality of liquid receiver refrigerant outlets are formed at sides of the liquid receiver so as to be spaced apart from each other by a predetermined gap in the direction of gravity;
- a valve cylinder having one side connected to an outlet of the compressor and the other side connected to an inlet of the compressor;
- a valve piston that is disposed in the valve cylinder and selectively opens the plurality of liquid receiver refrigerant outlets by moving based on a pressure difference between both sides of the valve cylinder;
- a first compression spring that connects one side of the valve cylinder to one side of the valve piston so as to support an upward movement of the valve piston;
- and
- a second compression spring that connects the other side of the valve cylinder to the other side of the valve piston so as to support a downward movement of the valve piston, the second compression spring having larger rigidity than that of the first compression spring.
Dependencies are inferred from the claim text.