Application Number: 00102635
Application Date: 2000.02.24
Publication Number: 1275697
Publication Date: 2000.12.06
Priority Information: 1999/5/27 KR 19237/99
International: F24F11/02;F25B30/02;F25B49/02
Applicant(s) Name: LG Electronics Inc.
Address:
Inventor(s) Name: Park Chong-Han;Kim Chol-Min;Kim Rang-gyo
Patent Agency Code: 11105
Patent Agent: li xiaoshu
Abstract To quicken the response speed by operating a compressor while increasing the frequency immediately to a level corresponding to the set temperature of a user when an inverter heat pump is started initially and adjusting the opening of an expansion valve stepwise according to outdoor temperature conditions to reach a final set opening conformable to a set frequency. The opening of an expansion valve is determined by dividing a total time elapsed before reaching an opening dependent on the frequency corresponding to a set temperature by such a minimum sustaining time of opening during that liquid refrigerant does not flow into a compressor. Based on the sustaining time of opening, the opening is adjusted from first start sustaining time of opening f to second, third, fourth and fifth start sustaining times of opening g, h, i, j, sequentially and an inverter heat pump is operated at a final set opening conformable to a set frequency. Since the operating frequency reaches a level corresponding to a set temperature through acceleration, start opening of the expansion valve is varied stepwise according to outdoor temperature conditions.