Cold storage showcase

Abstract

The temperature of an accommodating room is adjusted without causing drop of melting water from an upper evaporator onto the accommodated food materials. A cold storage showcase includes a cooling circuit 50 in which an upper evaporator 40 provided on an upper side of an accommodating room 14 and a lower evaporator 42 provided on a lower side of the accommodating room 14 are connected to a cooling apparatus. The upper evaporator 40 and the lower evaporator 42 are connected in parallel with the cooling apparatus. An electromagnetic valve SV for supplying or interrupting circulation of a cooling medium in the lower evaporator 42 is provided halfway a second route R 2 on an upstream side of the lower evaporator 42 . During a cooling operation, the accommodating room 14 is cooled at all times by the upper evaporator 40 . When temperature detecting means Th detects a drop in temperature of the accommodating room 14 , the electromagnetic valve SV is closed to stop the cooling by the lower evaporator 42 . On the other hand, when the temperature detecting means Th detects a rise in temperature of the accommodating room 14 , the electromagnetic valve SV is opened to adjust the temperature by cooling the accommodating room 14 by the lower evaporator 42.

1 . A cold storage showcase comprising an upper evaporator provided on an upper side of an accommodating room for materials, a lower evaporator provided on a lower side of the accommodating room, and a cooling system to which said upper evaporator and said lower evaporator are connected, a cooling medium being circulatingly supplied from said cooling system to both said upper evaporator and said lower evaporator to cool said accommodating room,
 wherein said upper evaporator and said lower evaporator are connected in parallel with said cooling system, and pipe conduit opening/closing means is provided in a cooling medium supplying pipe conduit through which said lower evaporator is connected to said cooling system, and   while said cooling medium is continuously supplied to said upper evaporator, said pipe conduit opening/closing means is opened or closed to supply or interrupt supply of said cooling medium to said lower evaporator.   
   
   
       2 . The cold storage showcase according to  claim 1 , wherein said pipe conduit opening/closing means is designed to automatically operate in accordance with the result of detection of the temperature obtained by temperature detecting means for detecting the temperature of said accommodating room.