Refrigeration – Refrigeration producer – Compressor-condenser-evaporator circuit
Patent
1988-11-08
1990-07-24
Tapolcai, William E.
Refrigeration
Refrigeration producer
Compressor-condenser-evaporator circuit
62513, F25B 4300
Patent
active
049427431
ABSTRACT:
The invention provides a full flow vaporizing accumulator for use in a refrigeration system employing hot gas from the compressor to periodically defrost the cooling coil, or coils where multiple coils are employed. The hot gas cooled in the defrosting coil produces liquid refrigerant droplets that may damage the expensive compressor. The device replaces the usual accumulator that is always provided to try to ensure that these droplets do not reach the compressor. The interior of the vaporizing accumulator is divided by a partition into two chambers, one of which the cooled gas from the defrosting coil is delivered via a perforated tube having one end blocked, so that the fluid is directed forcefully radially outward to make it turbulent. The interiors of the two chambers are connected by a plurality of fine bores in the partition, which discharge the turbulent fluid into intimate contact with a coil heated by the hot gas that is fed thereto before it is fed to the cooling coil to defrost it. The outlet from the second chamber consists of the usual J-shaped accumulator outlet tube having a drain hold at its lowest point. An orifice or restriction is provided at the outlet for the hot gas from the heated coil and increases the back-pressure applied to the compressor by an amount of between 20% and 70%, preferably by between 40% and 60%, rendering the device self-balancing to prevent compressor overload.
REFERENCES:
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patent: 4217765 (1980-08-01), Ecker
patent: 4537045 (1985-08-01), Mayer
patent: 4683726 (1987-08-01), Barron
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