Transport refrigeration unit having means for increasing the amo

Details Transport refrigeration unit having means for increasing the amo Transport refrigeration unit having means for increasing the amo

1993-11-18

1995-05-16

Wayner, William E.

Refrigeration

Automatic control

Refrigeration producer

62509, F25B 4900, F25B 3904

Patent

active

054150060

ABSTRACT:
A transport refrigeration system having electrical control which controls the temperature in a served space via heating and cooling cycles using hot refrigerant gas from a refrigerant compressor. The refrigeration system has high and low pressure sides. The high pressure side includes a discharge manifold of the compressor, a condenser coil, a refrigerant receiver tank, and an evaporator coil associated with the served space. The low pressure side extends from the evaporator coil to a suction manifold of the compressor. A first controllable refrigerant flow path means is controlled by the electrical control to purge the condenser coil in response to predetermined system parameters, causing refrigerant trapped in the condenser coil to flow to the low pressure side of the system. A second controllable refrigerant flow path is controlled by the electrical control to pressurize the receiver tank in response to predetermined system parameters, forcing refrigerant to flow from the receiver tank to the evaporator coil.

REFERENCES:
patent: 3370438 (1968-02-01), Hopkinson
patent: 3392542 (1968-07-01), Nussbaum
patent: 3438217 (1969-04-01), Leimbach
patent: 4748818 (1988-06-01), Satterness et al.
patent: 4903495 (1990-02-01), Howland et al.
patent: 4912933 (1990-04-01), Renken
patent: 4932219 (1990-06-01), Howland et al.
patent: 5056324 (1991-10-01), Haley
patent: 5157933 (1992-10-01), Brendel
patent: 5172559 (1992-12-01), Renken et al.

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