US 6,971,245 B2Granted

Auger type ice making machine

AssigneeHoshizaki Denki Kabushiki Kaisha

InventorMasayuki Kuroyanagi

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Abstract

An auger type ice making machine is provided with a control unit for causing a hot gas valve to open and for causing a heater disposed in the vicinity of ice compression passages to perform heating for a time period longer than the opening period of the hot gas valve, in accordance with a detection result from a rotation detecting sensor which detects rotation of a motor rotating an auger. The opening period of the hot gas valve and the heating period of the heater consist of, respectively: a basic opening period and a basic heating period, each corresponding to a time period during which the rpm of the auger is not higher than a threshold value, and an additional opening period and an additional heating period which are respectively added to the basic opening period and the basic heating period and begin at the time when the auger rpm exceeds the threshold value.

Claims3

Dependent claims

An auger type ice making machine in which ice formed by freezing on an inner peripheral surface of a cylinder of an ice making mechanism portion is scraped off by an auger and is discharged after being suitably compressed in an ice compression passage, the auger type ice making machine comprising:

a refrigeration circuit including a compressor, a condenser, an expansion valve, and an evaporator;
bypass means for supplying a refrigerant on a high pressure side of the refrigeration circuit to a low pressure side;
heating means for heating a vicinity of the ice compression passage;
overcooling detecting means for detecting overcooling in the ice making mechanism portion;
and
control means for causing the bypass means open in accordance with a detection result from the overcooling detecting means and initiating heating with the heating means at the same time or after the bypass means is opened, and then, ending heating with the heating means after closing the opened bypass means to.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application: 10/909,349Filed 3 Aug 2004
Priority: JP 2003-2904158 Aug 2003
Published: US 2005/0028549 A110 Feb 2005
Granted: 6 Dec 2005
Term ends: Not estimatedThe source records don’t support an estimate.

Classification5 codes

F25C 1/147
From the inner walls of cooled bodies: by using augers
F25C 5/10
By heating bodies in contact with the ice: using hot refrigerant; using fluid heated by refrigerant
F25C 5/142
Apparatus for shaping or finishing ice pieces, e.g. ice presses: extrusion of ice crystals
F25C 5/08
Without the use of saws: by heating bodies in contact with the ice