US 4,791,792 AGranted

Ice making machine

AssigneeHoshizaki Electric Co., Ltd.

InventorsNobutaka Naruse, Shozo Ogata

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Abstract

The present invention provides an ice making machine including an ice making water tank adapted to supply ice making water in circulation to an ice making section during the ice making cycle, a harvesting water tank adapted to supply harvesting water to the ice making section during the harvesting cycle, a compressor adapted to supply refrigerant gas to an evaporator tube of the ice making section, a float switch provided to the harvesting water tank and adapted to sense the upper water limit of the harvesting water, a water feed valve adapted to supply water to the harvesting water tank, and a control circuit having a relay for sensing that the machine is in the ice making cycle, the circuit being connected to the float switch and to the water feed valve for controlling the operation thereof. The water feed valve is open only when an AND output signal of the relay and the float switch is issued.

Claims6

Dependent claims

An ice making machine comprising:

an ice making section having an evaporator connected in heat exchange relation therewith;
an ice making water tank adapted for storing ice making water supplied in circulation to said ice making section during the ice making cycle;
a harvesting water tank adapted for storing harvesting water supplied to said ice making section during the harvesting cycle;
a compressor for supplying refrigerant gas to said evaporator;
means provided in said harvesting water tank for sensing the upper water level limit of the harvesting water;
a water feed valve for feeding water to said harvesting water tank;
control means including an ice making cycle sensing means adapted for sensing that the machine is in the ice making cycle thereof, said control means being connected to said means for sensing the upper water level limit and to said water feed valve for controlling the operation of said upper limit sensing means and said water feed valve;
and
said water feed valve being opened only during the ice making cycle when said ice making cycle sensing means and said upper limit sensing means issue an AND output.

6 more elements

Dependencies are inferred from the claim text.