Refrigeration – Processes – Defrosting or frost inhibiting
Patent
1989-04-14
1990-04-03
Tanner, Harry B.
Refrigeration
Processes
Defrosting or frost inhibiting
62158, 62160, 62197, 62278, 62174, F25B 1300
Patent
active
049129333
ABSTRACT:
A transport refrigeration system which includes a compressor, a condenser, a receiver, an evaporator, an accumulator, and a control valve which selectively initiates heating and cooling cycles. The heating capacity of a heating cycle is enhanced by connecting the outlet of the receiver to the inlet of the accumulator just prior to each heating cycle, while maintaining the control valve in a cooling position for a predetermined time delay. This forces any liquid refrigerant trapped in the condenser to flow into the receiver, while lower pressure in the accumulator causes liquid refrigerant in the receiver to flow into the accumulator, to provide additional liquid refrigerant in the accumulator at the start of the heating cycle, which is initiated at the end of the predetermined time delay.
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patent: 3219102 (1965-11-01), Taylor
patent: 4122686 (1978-10-01), Lindahl et al.
patent: 4122688 (1978-10-01), Mochizuki et al.
patent: 4437317 (1984-03-01), Ibrahim
patent: 4602485 (1986-07-01), Fujimoto et al.
patent: 4748818 (1988-06-01), Satterness et al.
Lackey D. R.
Tanner Harry B.
Thermo King Corporation
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