The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 16, 1982
Filed:
Dec. 31, 1979
Daniel A Baker, St. Joseph, MI (US);
Whirlpool Corporation, Benton Harbor, MI (US);
Abstract
A room air conditioner includes a variable speed eevaporator fan and a compressor selectively energized by a temperature control system. An ambient temperature sensor monitors the temperature of the room and an evaporator temperature sensor monitors the temperature of the evaporator. In an automatic mode of operation, the evaporator fan speed and compressor energization depend upon the difference between the ambient temperature and a set point temperature as determined by the position of a slide switch with multiple contacts each of which correspond to a stored set point value. The ambient and evaporator temperatures are determined by a linearization computation which utilizes a capacitor sequentially charged through the reference resistor and the ambient thermistor and the evaporator thermistor. The compressor is cycled off when the evaporator temperature falls below a certain value, and the compressor is held off for a fixed period of time after it has been de-energized to prevent short cycling or lockup.