Refrigeration unit including a hot gas defrosting system

Details Refrigeration unit including a hot gas defrosting system Refrigeration unit including a hot gas defrosting system

1986-04-30

1987-08-25

Tanner, Harry B.

Refrigeration

Automatic control

Trapping and discharging refrigerant batches

62151, 62278, F25B 4100, F25D 2106

Patent

active

046883924

ABSTRACT:
A refrigeration unit comprising a cooling circuit having a compressor, a condenser and an evaporator, and said unit including a hot gas valve and a hot gas bypass passage bypassing the condenser and forming a defrost circuit, so that when the evaporator is frosted upon operation by means of the cooling circuit, constant quantity refrigerant is circulated around the defrost circuit to perform a defrosting operation.

REFERENCES:
patent: 2451682 (1948-10-01), Lund
patent: 2718120 (1955-09-01), Wiley
patent: 2724245 (1955-11-01), Swinburne
patent: 3332251 (1967-07-01), Watkins
patent: 3633378 (1972-01-01), Toth
patent: 3692100 (1972-09-01), Gallagher, Jr.
patent: 4009594 (1977-03-01), Swanson
patent: 4193781 (1980-03-01), Vogel et al.
patent: 4353221 (1982-10-01), Taylor
patent: 4356703 (1982-11-01), Vogel

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