| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an air conditioning device capable of controlling supercooling with high accuracy by calculating a condensation pressure in a condenser from an operation state quantity of the air conditioning device. <P>SOLUTION: This condensation pressure detecting system 70 of a refrigeration cycle device constituting a refrigerant circuit by connecting a compressor 1, indoor heat exchangers 11b, 11c condensing a refrigerant in a full heating operation and a heating-based operation, flow control devices 12b, 12c adjusting a pressure of the condensed refrigerant, and a heat source-side heat exchanger 3 evaporating the refrigerant, by piping, further includes a low-pressure pressure loss operating section 72 calculating pressure loss of a low-pressure refrigerant pipe in the refrigerant circuit, a high-pressure pressure loss calculating section 74 calculating pressure loss of a high-pressure refrigerant pipe based on a ratio of cross-sectional areas of the high-pressure refrigerant pipe and the low-pressure refrigerant pipe, and the pressure loss of the low-pressure refrigerant pipe, and a condensation pressure calculating section 75 calculating a condensation pressure in the indoor heat exchangers 11b, 11c by subtracting the high-pressure pressure loss from a pressure at a discharge side of the compressor 1. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
