Vapor separation of variable capacity heat pump refrigerant

Details Vapor separation of variable capacity heat pump refrigerant Vapor separation of variable capacity heat pump refrigerant

1997-08-22

1998-10-20

Bennett, Henry A.

Refrigeration

Processes

Employing diverse materials or particular material in...

62149, 62160, 62200, 62502, F25B 4100

Patent

active

058229965

ABSTRACT:
A heat pump system has a separate outdoor coil which is mounted below the primary outdoor coil and connected in parallel with it by valves. On system start up in the heating mode, the inlet of the auxiliary coil is closed, and the outlet is opened so that compressor vacuum will boil off the more volatile, high pressure components thus filling the system. The outlet valve is then closed trapping the low pressure component in the auxiliary coil. In a second embodiment, the accumulator is utilized to assist the auxiliary coil in vacuum separation of the refrigerant blend. Variants include blocking flow through the expansion valve on start up.

REFERENCES:
patent: 2182318 (1939-12-01), Newill
patent: 4384460 (1983-05-01), Vakil
patent: 4484452 (1984-11-01), Houser, Jr.
patent: 4493193 (1985-01-01), Fisher
patent: 4628700 (1986-12-01), Alsenz

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