Refrigerating cycle device and air conditioner

Abstract

A compressor 1 for compressing a refrigerant containing a hydrofluoroolefin refrigerant, a condenser 2 for condensing the refrigerant by heat exchange, a throttle device 4 for decompressing the condensed refrigerant, an evaporator 5 for evaporating the refrigerant by heat exchange between the decompressed refrigerant and air, and air adsorbing means 3 for adsorbing oxygen and nitrogen are connected by piping so as to configure a refrigerant circuit through which the refrigerant containing the hydrofluoroolefin refrigerant is circulated.

Description

TECHNICAL FIELD[0001]The present invention relates to a refrigerating cycle device such as an air conditioner, a water heater and the like. Particularly, reliability of a refrigerating cycle device is improved by providing removing means for removing substances that react with an unstable refrigerant.BACKGROUND ART[0002]In general, in a refrigerating cycle device using a refrigerating cycle (heat-pump cycle) such as an air conditioner, a freezer, a water heater and the like, basically, a compressor, a condenser (heat exchanger), an expansion valve, and an evaporator (heat exchanger) are connected by piping so as to constitute a refrigerant circuit through which a filled refrigerant is circulated. The refrigerant compressed an the compressor becomes a high-temperature and high-pressure gas refrigerant and is fed into the condenser. The refrigerant having been fed into the condenser is liquefied by emitting neat through heat exchange with a heat-exchange target. The liquefied refriger...

AI Technical Summary

Benefits of technology

[0012]According to the refrigerating cycle device of the present invention, since the air adsorbing means is provided on the refrigerant circuit so as to adsorb an oxygen molecule and a nitrogen Molecule in the air of the refrigerant circuit, the oxygen molecule and the nitrogen molecule to become impurities can be prevented from circulating. Therefore, even if the HFO refrigerant or the like which has double bond and as chemically unstable is circulated through the refrigerant circuit, the HFO refrigerant and the air can be prevented from deteriorating or the like by chemical reaction or the like, performances of the refrigerating cycle device can be maintained for a long time, and moreover, reliability can be ensured. Also, since deterioration of the refrigerant can be prevented and feeding of a heat quantity can be maintained without applying a load on the compressor, energy can be saved. Since the HFO refrigerant such as tetrafluoropropylene used as a refrigerant at this time has a global warming coefficient equivalent to that of carbon dioxide, which is TO a natural refrigerant, for example, and is a so-called nonflon refrigerant, the refrigerant is suitable from a viewpoint of the environment.

Problems solved by technology

For example, carbon dioxide (CO2) has a considerably small global warming coefficient, but efficiency of the refrigerating cycle is lowered and power consumption is increased.

Also since pressure resistance of equipment, piping and the like needs to be raised in general as compared with a case using a refrigerant circulated in a refrigerant circuit (R410A refrigerant, for example), a weight of the entire apparatus is increased, which results in cost-up and prevents popularization.

Therefore, if impurities other than the refrigerant are present in the refrigerant circuit, the refrigerant reacts with the impurities and is deteriorated, which is a problem.

Also, a chemically reacted new substance further reacts with refrigerant oil, which generates sludge or blocks a thin, pipe such as a capillary tube or an expansion valve, which is a problem.

Images