Refrigeration – Automatic control – By congealed removable product condition
Patent
1978-10-04
1980-04-29
Makay, Albert J.
Refrigeration
Automatic control
By congealed removable product condition
62352, 366241, F25C 120
Patent
active
041999568
ABSTRACT:
An ice cube making machine includes agitator paddles which oscillate or reciprocate in a horizontal path between freezing elements to agitate the water to provide clear ice cubes. An ice cube thickness sensor is carried by the agitating paddle assembly and moves in a path toward and away from the cube. When the desired ice cube thickness has been attained, the sensor actuates circuitry to interrupt the freezing cycle and initiate the harvest cycle. Control of the various functions of the machine is afforded by a compact control module which contains proximity switches located adjacent exterior faces of the module and eliminates the need for limit switches. Feelers or links containing switch actuating magnets swing past the proximity switches to initiate or trigger or discontinue the various cycles. Also disclosed is a freezing element for an evaporator about which the cubes form and which has a copper shell or jacket which is closed at one end and which receives copper tubing in the other end for supply of refrigerant. The copper shell is crimped about the copper tubing and brazed to provide a seal. The rounded end of the element causes formation of a cube with a rounded end so that the only generally planar surface is the top of the cube. This minimizes broad surface to surface contact with adjacent cubes in the storage bin, such as with square cubes, which can result in cubes freezing together in clusters.
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patent: 4048891 (1977-09-01), Pearl
Makay Albert J.
Tapolcai, Jr. William E.
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