Refrigeration – Processes – Lubricant handling
Patent
1998-09-09
1999-05-11
Bennett, Henry
Refrigeration
Processes
Lubricant handling
62158, 62193, 62188, 62469, 417 12, F25J5/00
Patent
active
059015594
ABSTRACT:
An oil level regulator is disclosed for use in a refrigeration system which has an oil reservoir and at least one compressor with a crankcase for containing oil. The regulator has a body with an interior fluid chamber for receiving oil. An inlet communicates with the fluid chamber of the body and is connected by a conduit to the oil reservoir of the system. An outlet communicates from the fluid chamber through a conduit through to the crankcase of the compressor. A level detecting mechanism is disposed within the fluid chamber for detecting an oil level therein. The level detector mechanism includes a solenoid assembly which is actuated by the detector mechanism when the oil level within the chamber is determined to be at or below a predetermined level. A microprocessor is provided on the regulator which communicates with the detector mechanism and the solenoid assembly. The microprocessor includes a delay timer for actuating the switch mechanism after a delay time period has passed from detection of a low oil level in order to provide fluid to the interior chamber. The microprocessor also includes a latching timer for holding the solenoid assembly in a position for feeding oil into the fluid chamber for a latching time period after an oil level is detected which is at or above the first predetermined level.
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Isaacs Paul
Westermeyer Gary
AC&R Components, Inc.
Bennett Henry
Tinker Susanne C.
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