REFRIGERANT CHARGING DEVICE
To provide an inexpensive and reliable refrigerant charging device by improving a charging speed and reducing costs while preventing liquid-back.SOLUTION: The refrigerant charging device includes: a refrigerant charging circuit having a refrigerant charging port connected to a refrigerant circuit of...
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| Format: | Patent |
| Sprache: | eng ; jpn |
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| Zusammenfassung: | To provide an inexpensive and reliable refrigerant charging device by improving a charging speed and reducing costs while preventing liquid-back.SOLUTION: The refrigerant charging device includes: a refrigerant charging circuit having a refrigerant charging port connected to a refrigerant circuit of an air conditioner; an opening/closing valve provided at the refrigerant charging circuit; and a control mechanism to control the opening/closing valve. The control mechanism includes: a discharge superheat degree calculation unit to calculate the refrigerant discharge superheat degree from a refrigerant temperature and a refrigerant pressure at a discharge side of a compressor; and a valve control unit configured to control the opening/closing state of the opening/closing valve based on the calculated discharge superheat degree calculated by the discharge superheat degree calculation unit.SELECTED DRAWING: Figure 3
【課題】充填速度を向上させるとともに、コストを抑えつつも液戻りを防ぐことで、安価で信頼性の高い冷媒充填装置を提供する。【解決手段】空気調和機の冷媒回路に接続される冷媒充填ポートを有した冷媒充填回路と、冷媒充填回路に設けられた開閉バルブと、開閉バルブを制御する制御機構とを具備し、制御機構が、圧縮機から吐出側の冷媒温度及び冷媒圧力から冷媒の吐出過熱度を算出する吐出過熱度算出部と、吐出過熱度算出部により算出された吐出過熱度に基づいて、開閉バルブの開閉状態を制御するバルブ制御部とを備えるようにした。【選択図】図３ |
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