Non-freeze drain assembly

Details Non-freeze drain assembly Non-freeze drain assembly

1982-02-04

1984-07-31

Makay, Albert J.

Refrigeration

Processes

Defrosting or frost inhibiting

62150, 62272, 137 59, F25D 2100

Patent

active

044622163

ABSTRACT:
A drain assembly including a drain pipe and a heater oriented to heat the drain pipe, in combination with a defrosting type refrigeration evaporator intended for use within an enclosure whose temperature is maintained lower than the freezing point of water. The drain pipe has a discontinuity positioned in an upper portion so that defrost meltage traversing the drain tube in the ordinary course will not leak out of the pipe through the discontinuity, but that meltage backing up in the drain pipe because the drain pipe has been plugged by ice or dirt, will flow out of the discontinuity onto the freezer floor rather than backing up further into the drain pan, and the discontinuity will be maintained free of ice because it is heat transfer relation to the heater.

REFERENCES:
patent: 1451242 (1923-04-01), Viberg
patent: 1610577 (1926-12-01), Morrell

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