SHOWCASE

To provide a showcase capable of reducing a leakage amount of refrigerant even in a case where the refrigerant leaks on a storage chamber side of a refrigerant circuit during a heat insulation operation in which air circulation in the storage chamber is stopped.SOLUTION: A showcase 100 comprises a r...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: TANAKA CHIHIRO, ANZAI YOICHI, OBAYASHI MASAYOSHI, KAWASHIMA MITSURU, SUGIMOTO TAKESHI
Format: Patent
Sprache:eng ; jpn
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Beschreibung
Zusammenfassung:To provide a showcase capable of reducing a leakage amount of refrigerant even in a case where the refrigerant leaks on a storage chamber side of a refrigerant circuit during a heat insulation operation in which air circulation in the storage chamber is stopped.SOLUTION: A showcase 100 comprises a refrigerant circuit in which a compressor 11, a condenser 12, an expansion valve 13, and an evaporator 14 are connected in an order by a refrigerant pipe 17. The compressor 11 and the condenser 12 are arranged in a machine chamber. The evaporator 14 and an evaporator fan 16 are arranged in an air passage reaching the inside of a storage chamber 3. The showcase comprises a heater that keeps a storage in the storage chamber 3 warm, blocking means 18 capable of blocking a flow of refrigerant in the refrigerant pipe 17 between the condenser 12 and the evaporator 14, and a control device. The control device performs a recovery operation in which the evaporator fan 16 is stopped in a state where the flow of the refrigerant is blocked by the blocking means 18 before start of heat insulation of the heater, and then the compressor 11 is operated to recover the refrigerant to a machine chamber 2; and after the recovery operation, stops the compressor 11 to start the heat insulation of the heater.SELECTED DRAWING: Figure 1 【課題】貯蔵室内の空気の循環が停止された保温運転時に冷媒回路の貯蔵室側で冷媒が漏洩した場合に、冷媒の漏洩量の低減を図ることが可能なショーケースを提供する。【解決手段】ショーケース100は、冷媒配管17により圧縮機11と凝縮器12と膨張弁13と蒸発器14とが順に接続された冷媒回路を備え、圧縮機11及び凝縮器12を機械室内に配置し、蒸発器14と蒸発器ファン16は貯蔵室3内部と通じた風路中に配置し、貯蔵室3内の貯蔵物を保温するためのヒータと、凝縮器12と蒸発器14との間の冷媒配管17の冷媒の流通を阻止可能な阻止手段18と、制御装置とを備える。制御装置は、ヒータの保温開始前に阻止手段18により冷媒の流通を阻止させた状態において蒸発器ファン16を停止させてから圧縮機11を動作させて冷媒を機械室2側に回収する回収運転を行ない、回収運転の後に圧縮機11を停止させヒータの保温を開始させる。【選択図】図1