Browse Prior Art Database

ELLIPTICAL COILS FOR INDUCTION HEATING TO RELEASE ICE FASTER IN HOUSEHOLD ICEMAKERS

IP.com Disclosure Number: IPCOM000236780D
Publication Date: 2014-May-15
Document File: 5 page(s) / 446K

Publishing Venue

The IP.com Prior Art Database

Abstract

The invention proposes a technique to release ice faster in a household icemaker. The technique includes an elliptical printed coil structured to enhance coupling between a coil and an ice tray material for efficient power transfer capability. An ice tray structure includes elliptical curved shapes, which require a coil for effective inductive coupling between the coil and the ice tray material. Induction-heating coil heats the ice tray material directly to improve efficiency and fast ice removal. Induction is a direct way to heat the ice tray material with very low heat dissipation to a freezer chamber.

This text was extracted from a Microsoft Word document.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately 53% of the total text.

ELLIPTICAL COILS FOR INDUCTION HEATING TO RELEASE ICE FASTER IN HOUSEHOLD ICEMAKERS

BRIEF ABSTRACT

The invention proposes a technique to release ice faster in a household icemaker. The technique includes an elliptical printed coil structured to enhance coupling between a coil and an ice tray material for efficient power transfer capability. An ice tray structure includes elliptical curved shapes, which require a coil for effective inductive coupling between the coil and the ice tray material. Induction-heating coil heats the ice tray material directly to improve efficiency and fast ice removal. Induction is a direct way to heat the ice tray material with very low heat dissipation to a freezer chamber.

KEYWORDS

Icemaker, induction, Ice tray material, heating coil


DETAILED DESCRIPTION

A household icemaker utilizes a calrod to heat an ice tray material for removal of ice. The calrod is a resistive heating element where heat transfer through the material occurs by conductive heat transfer. However, calrod heating is inefficient and slow as heat is transferred through the material and heat is dissipated in to a freezer chamber. Consequently, it requires increased energy requirement for ice removal from the ice tray. Energy required for ice removal is part of energy efficiency ratio (EER) of a refrigerator and the inefficient calrod results in low energy efficiency.

A conventional technique includes a heating coil for applying electromotive power to generate heat to eject ice from the ice mold.  However, the conventional technique is not efficient in heat transfer.

A conventional technique includes a heat transfer fluid to cool an ice mold body to separate ice. However, the conventional technique causes dissipation of heat in the freezer chamber.

              Therefore, there is a need for a technique to manage heat loss and provide fast heating of the ice tray for removal of ice.

The invention proposes a technique to release ice faster in a household icemaker. The technique includes an elliptical printed coil structured to enhance coupling between a coil and an ice tray material for efficient power transfer capability. FIGURE 1 depicts printed...