Refrigeration – Automatic control – Refrigeration producer
Patent
1989-12-04
1991-10-01
Tanner, Harry B.
Refrigeration
Automatic control
Refrigeration producer
165164, 165185, 165908, 236DIG6, 374138, F25B 4104, G01K 1302
Patent
active
050521900
ABSTRACT:
A new device is provided for sensing refrigerant tempertatures in refrigerator systems, and for the control of refrigerant loading in a plurality of refrigerator evaporator circuit coils connected in parallel. Such evaporator coils are supplied with refrigerant through a termostatically controlled flow control valve, which is controlled by a sensor to ensure a predetermined amount of superheat. The usual minimum superheat is aobut 5.5.degree. C. (10.degree. F.) and to reduce this value the refrigerant is passed through the devide in which it is rendered thoroughly turbulent and mixed, the device intercepting the entire refrigerant flow just before the sensing of the superheat, thus ensuring that the temperature is accurately measured. In one aspect of the invention the device consists of a series of three chambers connected together by two similar sets of holes, the first and third chambers being similar so that it is completely reversible. In another aspect of the invention the part of the device wall intended to receive the sensor is provided with a groove into which the sensor fits snugly to increase the heat exchange contact between them. Grooves of different sizes can be provided in the same device. The heat conductive contact can be increased further by sandwiching a layer of pasty heat conductive material between the sensor and the groove wall that fills the space between them.
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patent: 4671675 (1987-06-01), Arisi et al.
patent: 4694894 (1987-09-01), Kito et al.
Super S.E.E.R. Systems Inc.
Tanner Harry B.
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