Automatic ice making machine

Details Automatic ice making machine Automatic ice making machine

1990-04-16

1991-06-25

Tapolcai, William E.

Refrigeration

Automatic control

By congealed removable product condition

F25C 112

Patent

active

050256378

ABSTRACT:
Disclosed is an automatic ice making machine having an ice making section, a water feed system, an ice releasing unit and an ice removal detector; characterized in that said ice making machine further comprises a protection unit which stops the ice making operation after a predetermined time counted from the starting point of the ice releasing operation, provided that the ice removal detector outputs no ice removal signal. The protector unit may have an alarm means which is actuated when the ice making operation is suspended for some reasons, or the protector unit may comprise a timer having a normally open contact which is closed when a preset time is counted up thereby, a normally closed contact interposed within one of the power supply lines connected to the ice making machine, and a relay having a normally open contact disposed parallel to the normally open contact of the timer; wherein the relay allows its normally closed contact to assume an open posture when the normally open contact of the timer is closed to simultaneously allow its normally open contact to assume a closed posture to retain continuity on its own.

REFERENCES:
patent: 3969097 (1976-07-01), Braden
patent: 4238930 (1980-12-01), Hogan et al.
patent: 4344295 (1982-08-01), Linstromberg
patent: 4601176 (1986-07-01), Suyama
patent: 4938030 (1990-07-01), Josten et al.

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