Refrigeration – Automatic control – Refrigeration producer
Patent
1987-07-29
1989-02-07
Tanner, Harry B.
Refrigeration
Automatic control
Refrigeration producer
62278, 62511, 62513, F25B 4700
Patent
active
048023396
ABSTRACT:
The invention provides a full flow vaporizer 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 vaporizer usually consists of three concentric circular cross-section tubes forming a first inner passage, a concentric second annular passage, and a concentric third annular passage. The inner tube receives the fluid from the coil and has one end blocked. It is provided in its wall with a plurality of fine bores directing the fluid forcefully radially outwards under the action of the high velocity gas component of the fluid against the inner wall of the middle tube, which is heated by the hot gas that is passed through the third annular passage before being fed to the coil to perform the defrost function. The flow capacities of the passages and the bores are chosen to be in a specific range of flow capacities relative to one another, usually in the range 0.5 to 1.5, preferably in the range 0.9 to 1.2, so that when not in use the vaporizer has no appreciable effect on the remainder of the system. An orifice or restriction is provided at the outlet for the hot gas from the third annular passage 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 motor overload.
REFERENCES:
patent: 2526379 (1950-10-01), Maseritz
patent: 2693678 (1954-11-01), Toothman
patent: 2729950 (1956-01-01), Toothman
patent: 3021693 (1962-02-01), Aune
patent: 3152455 (1964-10-01), Ware
patent: 3195321 (1965-07-01), Decker et al.
patent: 3513664 (1970-05-01), Duffney
patent: 3992895 (1976-11-01), Kramer
patent: 4030315 (1977-06-01), Harnish
patent: 4238932 (1980-12-01), Schrader
LandOfFree
Hot gas defrost system for refrigeration systems and apparatus t does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Hot gas defrost system for refrigeration systems and apparatus t, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hot gas defrost system for refrigeration systems and apparatus t will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1078225