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Cooking appliances using heaters coatings

A technology of heating layer and thermal spraying, which is applied in the direction of coating, heating method, household heating, etc., and can solve problems such as high cost, brittle cracking, and impractical oven cooking

Inactive Publication Date: 2011-05-18
富豪洁具公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, thick films are made of glass, so they are prone to brittle fracture if the thermal expansion conditions are not precisely matched
Other types of heater coatings include thin-film resistive layers made by methods such as sputtering, chemical vapor deposition, and evaporation, which are very costly and generally impractical for oven cooking

Method used

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  • Cooking appliances using heaters coatings
  • Cooking appliances using heaters coatings
  • Cooking appliances using heaters coatings

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Embodiment Construction

[0033] This application claims priority to US Provisional Application No. 61 / 126,095, filed May 1, 2008, the entire teachings of which are incorporated herein by reference.

[0034] Resistive heating elements can be formed by a thermal spray process. Thermal spraying is a versatile technique for depositing coatings on a variety of materials, including metals and ceramics. It includes systems that use powder as a feedstock (e.g., arc plasma spray systems, flame spray systems, and high velocity oxyfuel (HVOF) systems), systems that use wire as a feedstock (e.g., arc wire spray systems, HVOF wire spray systems and flame spray systems) and systems using their combinations.

[0035] Arc plasma spraying is a method used to deposit materials on a variety of substrates. The DC electric arc produces an ionized gas (plasma) which is used to spray molten powder material in a manner similar to spray paint.

[0036] Arc wire spray systems function by melting the ends of two wires (eg, z...

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Abstract

An oven comprises a housing with a heating element having a heating layer, a support structure and a control system to control the operating temperature of the oven. The heater layer is preferably a thermally sprayed layer.

Description

[0001] related application [0002] This application claims priority to US Provisional Application No. 61 / 126,095, filed May 1, 2008, the entire teachings of which are incorporated herein by reference. Background technique [0003] The cooking process involves the transfer of heat to food in a controlled manner. Conceptually, heat is considered to transfer in three ways: conduction, convection, and radiation. These processes are generally well understood and have been described by mathematical methods with a long history. [0004] In an electric oven, heat is usually transferred by radiation from an electric heating element located within the oven cavity. The most widely used heating element today is the Cal-rod, which is wire, usually nickel-chromium wire, enclosed in a nickel tube or sheath and insulated from the sheath by a crushed ceramic such as magnesia. Cal-rods radiate heat in all directions, whereby most of this energy is directed towards the walls of the oven rath...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24C7/04F24C15/16H05B3/26
CPCH05B2203/032F24C7/04H05B2203/017H05B1/0263H05B2203/013F24C15/166H05B3/26H05B3/68C23C4/12F24C7/046Y10T29/49002
Inventor 理查德·C·阿博特
Owner 富豪洁具公司