Refrigeration – Processes – Congealing flowable material – e.g. – ice making
Reexamination Certificate
2006-01-24
2006-01-24
Tapolcai, William E. (Department: 3744)
Refrigeration
Processes
Congealing flowable material, e.g., ice making
C062S233000
Reexamination Certificate
active
06988373
ABSTRACT:
When refrigerant shortage has occurred, a failsafe operation, for example, for stopping an ice-making operation is carried out to thereby suppress wasteful electric power consumption and prevent an ice-making section and a compressor from being damaged. An ice-making machine alternately and repeatedly carries out the ice-making operation for producing ice blocks (M) by cooling an ice-making section (10) on which is disposed an evaporator (14) connected to a refrigeration system (12), by supplying refrigerant to the evaporator (14) for circulation, and deicing the operation for causing the ice blocks (M) produced on the ice-making section (10) to be released therefrom. During the ice-making operation, when time in which the outlet temperature of refrigerant from the evaporator (14) takes to reach a first preset temperature K1,after the start of the ice-making operation, is longer than a normal time tn1in which the outlet temperature of the refrigerant from the evaporator (14) takes to reach the preset temperature K1the abnormal state of shortage of refrigerant is determined and a failsafe operation is carried out.
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Hoshizaki Denki Kabushiki Kaisha
Koda & Androlia
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