F - Mech Eng,Light,Heat,Weapons – 25 – B
Patent
F - Mech Eng,Light,Heat,Weapons
25
B
62/40
F25B 41/00 (2006.01) F25B 5/02 (2006.01) F25B 41/06 (2006.01) F25B 43/00 (2006.01)
Patent
CA 2004220
Abstract of the Disclosure A new device is provided for sensing refrigerant temperatures 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 thermostatically controlled flow control valve, which is controlled by a sensor to ensure a predetermined amount of superheat. The usual minimum superheat is about 5.5°C (10°F) and to reduce this value the refrigerant is passed through the device 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. - 37 -
Gregory Charles
Rogers & Scott
LandOfFree
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