公开(公告)号：US4813241A

公开(公告)日：1989-03-21

申请号：US85940

申请日：1987-08-14

申请人： Hideaki Hurutachi ,  Takashi Takizawa ,  Tsutomu Tanaka

发明人： Hideaki Hurutachi ,  Takashi Takizawa ,  Tsutomu Tanaka

IPC分类号： F25B5/00 ,  F25D21/12 ,  A47F3/04

CPC分类号： F25B5/00 ,  F25D21/12 ,  F25B2347/021 ,  F25D2317/0684

摘要： A low-temperature showcase comprises a heat insulated wall, on the top of which an opening for putting-into or taking-out commodities is formed. The inside of the heat insulated wall is divided into an air passage and a storage chamber thereover by a dividing plate which is installed inside this heat insulated wall in a nearly horizontal fashion. The air passage is formed in a manner that the cross-section thereof is of a U-shape, and the storage chamber is formed surrounded by this air passage. At both ends of the air passage, vent ports are formed at the positions facing each other through the opening of the heat insulated wall inbetween. The air passage is divided into two parts by a fan case corresponding to the respective vent ports and a blast fan which can rotate reversibly is supported by this fan case. In each halved air passage, an evaporator is installed in the vicinity of the vent port, and when one of the evaporators is put in cooling operation, the other evaporator is subjected to defrosting. An electric heater is installed between each vent port and each evaporator, and these electric heaters are energized when the corresponding evaporator is to be defrosted. By means of a thermo-switch, energizing of the electric heater is stopped when the air temperature in the air passage rises above a predetermined valve during energizing the electric heater.

摘要翻译： 低温展示柜包括隔热壁，顶部形成有用于投入或取出商品的开口。 绝热壁的内部由几乎水平的方式安装在该隔热壁内的分隔板分隔成空气通道和储存室。 空气通道以其横截面为U形的方式形成，并且储存室形成为被该空气通道包围。 在空气通道的两端，排气口形成在彼此相对的位置处，隔着隔热壁的开口。 空气通道由对应于各个通气口的风扇壳体分成两部分，并且由该风扇壳体支撑可逆地旋转的鼓风扇。 在每一个半空气通道中，蒸发器安装在通气口附近，当其中一个蒸发器进入制冷运行时，另一个蒸发器进行除霜。 在每个排气口和每个蒸发器之间安装一个电加热器，当相应的蒸发器要除霜时，这些电加热器通电。 通过热电开关，当通电电加热器时，当空气通道中的空气温度上升到高于预定阀门时，电加热器通电停止。