Making ice in a refrigerator

• US 4,923,494 A
• Filed: 10/17/1988
• Issued: 05/08/1990
• Est. Priority Date: 10/17/1988
• Status: Expired due to Term

• Current Assignee: Ranco Incorporated of Delaware (Schneider Electric SE)
• Original Assignee: Eaton Corp. (Wisconsin) (Eaton Corporation PLC.)
• Inventors: Karlovits, Frank K.
• Primary Examiner(s): Tapolcai, William E.
• Application Number:
  US07/258,308
• Time in Patent Office: 568 Days
• Field of Search: 62/71, 62/73, 62/351, 62/353
• US Class Current: 62/73
• CPC Class Codes: F25C 1/04 by using stationary moulds
• CPC Class Codes: F25C 2305/024 Rotating rake
• CPC Class Codes: F25C 5/08 by heating bodies in contact with the ice

Abstract

A stationary tray melt-out ice maker for forming individual ice sections in a refrigerator. The tray has a plurality of crescent-shaped ice molding cavities and one arm of a rotatable harvesting comb is immersed in each ice molding cavity for freezing of ice with the arm embedded therein. Upon heating of the tray, the harvest comb is rotated such that the ice embedded arm sweeps the individual crescent-shaped ice from the molding cavities. Continued rotation of the comb causes the ice to contact stationary strippers which cause fracturing and stripping of the crescent-shaped ice from the arm and harvesting of two quarter round sections of ice from each crescent-shaped ice formation.

Claims

1. An icemaker for use in a refrigerated compartment capable of forming in a mold and harvesting some ice comprising:

(a) tray means defining a plurality of curved-bottom compartments;

(b) electrically operated valve means operable upon connection to a source of water and electrical energization to fill said tray compartments for ice making;

(c) movable harvesting means disposed adjacent said tray means, said harvesting means including a partitioning member extending into each compartment substantially to the said curved bottom, each of said partitioning members being frozen in ice formed in the respective compartment;

(d) heater means operable to heat said tray means for facilitating removal of ice formed in said tray means;

(e) actuator means operable to rotate said harvesting means to cause each of said partitioning members to sweep the respective curved ice frozen thereabout from said tray means; and

,

(f) comb means disposed adjacent said tray means in fixed relationship thereto and operable to be contacted by said curved ice form during said rotation of said harvesting means, said comb means operative to strip said curved ice form from said partitioning member and break said curved ice form into a plurality of pieces.

2. The icemaker defined in claim 1, wherein said curved bottom tray compartment has a generally constant radius curvature.

3. The icemaker defined in claim 1, wherein each of said partioning members extends substantially the width of said compartment in the direction transverse to the direction of curvature of said curved bottom.

4. The ice maker defined in claim 1, wherein each of said partitioning members has the portion of maximum transverse width radially intermediate the ends thereof for providing a wedging action when said ice is stripped therefrom.

5. The icemaker defined in claim 1, wherein said harvesting means further comprises a catcher member arcuately spaced from each of said partitioning members, said catcher member extending exteriorly of the waterfill in said tray means and rotatable with said partitioning member for preventing said stripped and divided ice from falling into said tray compartment.

6. A method of moulding and harvesting ice in a refrigerator freezer compartment comprising the steps of:

(a) providing a tray having a plurality curved bottom ice formation compartments;

(b) positioning a paddle in each of said ice compartments;

(c) filling each compartment with water and freezing the water therein about said paddle member to form ice in the shape of said curved bottom;

(d) heating said tray to facilitate ice removal;

(e) rotating each of said paddle members to sweep said ice from said compartment;

(f) providing a stationary comb means to said ice from each of said paddle members and divide each of said ice forms about said paddle into a plurality of pieces.

7. The method defined in claim 6 wherein said step of positioning and dividing includes the step of positioning the paddle in the center of said compartment and dividing the compartment equally.

8. The method defined in claim 6, wherein said steps of stripping and dividing includes the step of and interdigitating the tines of the comb with said paddles.