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.

Date of Patent:
May. 27, 2008

Filed:

Jun. 24, 2005
Applicants:

Seung-chul Kim, Seoul, KR;

Hyeong-joon Seo, Suwon-si, KR;

Jun-pyo Lee, Yongin-si, KR;

Jae-hyo Jeong, Suwon-si, KR;

Jung-chul Choi, Suwon-si, KR;

Inventors:

Seung-chul Kim, Seoul, KR;

Hyeong-joon Seo, Suwon-si, KR;

Jun-pyo Lee, Yongin-si, KR;

Jae-hyo Jeong, Suwon-si, KR;

Jung-chul Choi, Suwon-si, KR;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F25B 13/00 (2006.01); F25B 41/00 (2006.01);
U.S. Cl.
CPC ...
Abstract

An air conditioning system includes an indoor heat exchanging unit, an outdoor heat exchanging unit, a compressor forming a closed loop together with the indoor and outdoor heat exchanging units to compress refrigerant, and a compressor driver to drive the compressor. The air conditioning system also includes an outdoor temperature sensor to sense outdoor temperature, a high pressure sensor to sense a pressure of the refrigerant discharged from the compressor, a low pressure sensor to sense the pressure of the refrigerant introduced into the compressor, a bypass pipe to connect a refrigerant pipe disposed between the indoor heat and outdoor heat exchanging units with a refrigerant pipe disposed in an influx part of the compressor, a bypass valve to open and close the bypass pipe, and a controller to open the bypass valve when the pressure sensed by the low pressure sensor is a predetermined target low pressure or is below the predetermined target low pressure, and to close the bypass valve when the pressure sensed by the high pressure sensor is over a predetermined target high pressure, under a condition in which the outdoor temperature sensed by the outdoor temperature sensor is a predetermined reference temperature or is below the predetermined reference temperature during a heating operation. Thus, the air conditioning system and a control method thereof, is improved in heating effect while performing a heating operation under a condition in which the outdoor temperature is low.


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