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. 07, 1999
Filed:
Sep. 30, 1997
Kyung Sik Kim, Inchon, KR;
LG Electronics, Inc., , KR;
Abstract
An air conditioning apparatus includes a first, second and third internal devices, and an external device which is provided with a plurality of separately operable units. Each of the units comprises an inverter compressor for compressing a refrigerant under a high temperature and a high pressure, a first heat exchanger, a four-directional valve for sending the refrigerant to the external heat exchanger during a cooling operation and being closed/opened so as to discharge the refrigerant into each of the internal devices during a heating operation, a check valve for switching on/off the flow of the refrigerant which was compressed after being heat-exchanged in the external heat exchanger, a pair of electronic expansion valves for depressurizing the refrigerant respectively, an electronic expansion valve applied to heating and for further depressurizing the temperature-lowered refrigerant which was depressurized in the expansion valves, and an accumulator between the compressor and the four-directional valve and for temporarily storing therein the refrigerant in each step of the cooling and heating operation.