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:
Dec. 28, 2010
Filed:
Jul. 24, 2006
Masanori Aoki, Tokyo, JP;
Masanori Aoki, Tokyo, JP;
Mitsubishi Electric Corporation, Chiyoda-Ku, Tokyo, JP;
Abstract
A refrigerating air conditioning system is provided with a refrigerant circuit which includes a compressor, an indoor heat exchanger, a first pressure reducing device, an outdoor heat exchanger, and a switching devicefor switching a direction of a refrigerant flow between heating and cooling modes for supplying heat from the indoor heat exchangerIn the system, a refrigerant temperature detection sensorof the outdoor heat exchangerand an outdoor air temperature detection sensorare provided for determining a state of a frost formed on the outdoor heat exchanger. Two types of defrosting inhibition time values τand τare allowed to be set in accordance with a previous defrosting time τfor continuously performing heating operation. A defrosting operation is performed by controlling the defrosting inhibition time value to be long when an amount of the frost formed on the outdoor heat exchangeris determined to be small, and the defrosting inhibition time value to be short when the amount of the frost formed on the outdoor heat exchangeris determined to be large.