Refrigeration – Automatic control – Refrigeration producer
Patent
1999-02-08
2000-03-21
Wayner, William
Refrigeration
Automatic control
Refrigeration producer
62503, 62505, F25B 4104, F25B 4300
Patent
active
060388757
ABSTRACT:
A vapor compression system in which a quantity of a refrigerant circulates between at least two pressure levels in a condenser and an evaporator respectively, comprises a compressor (1) for increasing the pressure of refrigerant vapor; a condenser (5) for high pressure refrigerant vapor received from the compressor; an expansion device (13) such as a valve across which the pressure differential between the condenser and the evaporator is maintained, to control the withdrawal of liquid refrigerant from the condenser according to the volume of liquid refrigerant that is within or behind it; an evaporator (15) for liquid refrigerant received from the condenser; a receiver (21) into which refrigerant is discharged from the evaporator, with a vapor withdrawal conduit (25) through which vapor is withdrawn from the receiver for supply to the compressor, the receiver including a reservoir (23) into which liquid refrigerant discharged from the evaporator collects, to control supply of liquid refrigerant to the compressor; a liquid withdrawal conduit (27) through which liquid refrigerant is supplied from the reservoir into the compressor suction of the compressor (1); so arranged that the rate of removal of liquid refrigerant from the reservoir is maintained in proportion to the amount of refrigerant that is removed from the receiver as vapor. The system can ensure that the wetness of the refrigerant discharged into the receiver from the evaporator is controlled to ensure that it is wet under normal operating conditions of the system, to optimize use of heat exchange surfaces of the condenser and the evaporator.
REFERENCES:
patent: 2432859 (1947-12-01), Carter
patent: 2986905 (1961-06-01), Kocher et al.
patent: 3379033 (1968-04-01), Grant
patent: 3600904 (1971-08-01), Tilney
patent: 5027602 (1991-07-01), Glen
US, A 1 884 186 (Peltier) Oct. 25, 1932 see p. 1, line 35-pg. 2, line 111; FIG. 1-5.
US, A 3 735 603 (Hamilton) May 29, 1973 see col. 2, line 35-col. 5, line 47; FIG. 1,2.
GB, A 1 502 607 (Start Refrigeration) Mar. 1, 1978 see p. 1, line 71-p. 2, line 110; FIG. 1,2.
DE, A 35 45 013 (Audi) Dec. 18, 1986, see p. 9, line 1--p. 10, line 22; FIG. 1.
DE, A 26 02 582 (Schultze) Oct. 13, 1977, see p. 12, last paragraph-p. 17, paragraph 2; FIG. 1-10.
US, A 3 370 440 (Kellie) Feb. 27, 1968, see co. 2, line 20--col. 4, line 8; FIG. 1-6.
GB, A 2 164 736 (Tyler Refrigeration) Mar. 26, 1986 see p. 3, line 18--line 79; FIG. 1-3.
US A 2 953 906 (Quick) Sep. 27, 1960, see col. 2, line 24, col. 3, line 48, FIG. 1,2.
US,A 3 111 819 (Williams) Nov. 26, 1963, see col. 1, line 56--col. 3, line 24; FIG. 1-3.
EP A 0 104 750 (Avery) Apr. 4, 1984; see p. 6, line 21--p. 12, line 30; FIG. 2,3.
WO A 92 06339 (Marston) Apr. 16, 1992 cited in the application see p. 14, paragraph 2--p. 19, Paragraph 1; FIG. 1.
DE,A 35 45 013 (Audi) Dec. 18, 1986, see p. 9, line 1--p. 10, line 22; FIG. 1.
BTG International Inc.
Wayner William
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