Electric control apparatus for ice making machine

Details Electric control apparatus for ice making machine Electric control apparatus for ice making machine

1992-02-24

1993-11-09

Tapolcai, William E.

Refrigeration

Automatic control

By congealed removable product condition

62233, F25C 112

Patent

active

052592014

ABSTRACT:
In an ice making machine having an upright ice making plate 12 arranged above a water tank 11, refrigeration circuit for circulating refrigerant to an evaporator 13 attached to the ice making plate 12, a hot gas valve 18 disposed within a bypass line of the refrigeration circuit to be opened to supply a hot gas to the evaporator 13 at a defrost cycle, a water pump 25 arranged to supply the ice making water from the water tank 11 to an upper portion of the front surface 12a of the ice making plate 11 at an ice making cycle, and a water valve 23 arranged to supply a defrost water from an external source of water to an upper portion of the rear surface 12b of the ice making plate 12 at the defrost cycle, the electric control apparatus includes a thermal sensor 73 arranged to detect a temperature at the outlet portion of the evaporator 13, and is designed to start measurement of a predetermined time when the temperature detected by the sensor 73 rises to a predetermined temperature at the defrost cycle after the preceding ice making cycle and to close the hot gas valve 18 and the water valve 23 upon lapse of the predetermined time.

REFERENCES:
patent: 3299656 (1967-01-01), Linstromberg et al.
patent: 3388560 (1968-06-01), Moreland, II
patent: 3449919 (1969-06-01), Fox
patent: 3541806 (1970-11-01), Jacobs
patent: 4903505 (1990-02-01), Sakai et al.
patent: 4934159 (1990-06-01), Sakai et al.
patent: 5105632 (1992-04-01), Naruse

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