Electric control apparatus for auger type ice making machine

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

1990-04-24

1991-01-08

Tapolcai, William E.

Refrigeration

Automatic control

By congealed removable product condition

62188, 62233, F25C 114

Patent

active

049825739

ABSTRACT:
An electric control apparatus for an auger type ice making machine having an auger mounted for rotary movement within an evaporator housing to which water is supplied form a water tank to cause ice crystals to form on the internal freezing surface of the evaporator housing. The control apparatus includes a first water level detector disposed within the water tank to produce a first signal therefrom when a level of water in the tank has fallen to a lower limit level, a second watr level detector disposed within th watr tank to produce a second signal therefrom the level of water has risen up to an upper limit level, a timer cooperable with the second water level detector for measuring a predetermined period of time in response to the second signal, the period of time being determined to correspond with a time interval defined by the first and second signals in normal operation of the ice making machine and adjusted taking into consideration a time for which operation of the ice making machine is made in a stable condition, and a relay circuit cooperable with the timer for rendering the ice making machine inoperative when the predetermined period of time has been measured by the timer before applied with the first signal.

REFERENCES:
patent: 3365901 (1968-01-01), Guard
patent: 3511059 (1970-05-01), Hoenisch
patent: 4622826 (1986-11-01), Tsukiyama et al.
patent: 4641501 (1987-02-01), Simkens
patent: 4644757 (1987-02-01), Hida et al.
patent: 4932216 (1990-06-01), Ito

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