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    • 1. 发明授权
    • Method for operating an open show-case
    • 操作打开展示的方法
    • US5138843A
    • 1992-08-18
    • US754134
    • 1991-09-03
    • Hiroshi TamayamaTetsuo NakamuraKatsumi Ogino
    • Hiroshi TamayamaTetsuo NakamuraKatsumi Ogino
    • A47F3/04F25B5/00F25B47/02F25D17/06F25D17/08F25D21/06
    • F25B47/02A47F3/0447F25B5/00F25B2400/0411F25B2400/22F25B2600/2511F25D2317/0684
    • This open show-case has inner and outer air ducts, a first evaporator and a first blower in said inner duct (an inner evaporator and an inner blower, respectively), and a second evaporator and a second blower in said outer duct, said blowers circulating the air to form at least two layers of air curtains running between respective upper ports at the upper end of the front opening of said show-case and respective lower ports at the lower end of said opening. The show-case is operated by: providing high pressure refrigerant only through the inner evaporator via a decompression valve to thereby evaporate the refrigerant therein during refrigeration operation by the inner evaporator, without passing the refrigerant through the outer evaporator; and providing high pressure refrigerant to the inner evaporator and to the outer evaporator via a decompression valve during defrosting operation for the inner evaporator, with the outer blower driven at a higher speed than a normal speed and the inner blower driven in a reverse direction at a slower speed than a normal speed.
    • 该开放式展示箱具有内部和外部空气管道,在所述内部管道(分别为内部蒸发器和内部鼓风机)中的第一蒸发器和第一鼓风机,以及在所述外部管道中的第二蒸发器和第二鼓风机,所述鼓风机 循环空气以形成在所述展示箱的前开口的上端和相应的下端口在所述开口的下端处的相应的上端口之间延伸的至少两层气帘。 展示柜的操作是:仅通过减压阀通过内部蒸发器提供高压制冷剂,从而在通过内部蒸发器的制冷操作期间使其中的制冷剂蒸发,而不使制冷剂通过外部蒸发器; 以及在用于内部蒸发器的除霜操作期间通过减压阀向内部蒸发器和外部蒸发器提供高压制冷剂,其中外部鼓风机以比正常速度更高的速度驱动,并且内部鼓风机以相反的方向驱动 速度比正常速度慢。