Refrigeration – Automatic control – Refrigeration producer
Patent
1988-10-07
1990-08-21
Tanner, Harry B.
Refrigeration
Automatic control
Refrigeration producer
62393, 62399, F25B 4104
Patent
active
049495526
ABSTRACT:
A refrigeration unit and a glycol unit are integrated to provide a cooling system for beer being delivered through a line run to dispensing stations remote from the beer storage cooler. A chiller coil of the glycol unit is coaxial within the evaporator coil of the refrigeration unit where the glycol coolant is chilled and then flows directly into the line run. Constant temperature of the coolant in the chiller coil is maintained by the maintenance of a constant pre-set vapor pressure of the refrigerant gas in the evaporator coil. The pre-set vapor pressure is maintained by a hot gas bypass valve which automatically meters hot refrigerant gas from the output of the compressor directly to the evaporator coil when the vapor pressure falls below the pre-set pressure. The compressor operates continuously and only a relatively small volume of the glycol coolant is stored in the tank of the glycol unit.
REFERENCES:
patent: 3443394 (1969-05-01), Knonick
patent: 3481151 (1969-12-01), Seeley
patent: 3555843 (1971-01-01), Cook
patent: 4242881 (1981-01-01), Williams
patent: 4676400 (1987-06-01), Lamont et al.
Perfection Equipment, Inc.
Tanner Harry B.
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