Patent ID: 7987679
Filing Date: 2011-08-02
Classification: F25B

Abstract:
1. An air conditioning apparatus comprising: a refrigerating cycle to connect a compressor, a high-pressure-side heat exchanger, a throttle device and a low-pressure-side heat exchanger by piping, to circulate a refrigerant of high temperature and high pressure in the high-pressure-side heat exchanger, and to circulate a refrigerant of low temperature and low pressure in the low-pressure-side heat exchanger; a temperature detection part of high-pressure refrigerant to detect a temperature of the refrigerant in the high-pressure-side heat exchanger; a temperature detection part of high-pressure-side heat exchanger entrance-side refrigerant to detect a temperature of the refrigerant at an entrance side of the high-pressure-side heat exchanger; a temperature detection part of high-pressure-side heat exchanger exit-side refrigerant to detect a temperature of the refrigerant at an exit side of the high-pressure-side heat exchanger; a fluid temperature detection part to detect a temperature at a location of the fluid circulating outside of the high-pressure-side heat exchanger; a calculation comparison part to calculate a first value obtained by dividing a supercooling degree SC which is obtained by subtracting the temperature detected by the temperature detection part of high-pressure-side heat exchanger exit-side refrigerant from the temperature detected by the temperature detection part of high-pressure refrigerant, by dT a judgment part to judge a refrigerant leak based on a comparison result of the calculation comparison part.