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US3662141A - Oven shelf adapted to absorb microwave energy and conduct heat to a load - Google Patents

Oven shelf adapted to absorb microwave energy and conduct heat to a load Download PDF

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Publication number
US3662141A
US3662141A US734944A US3662141DA US3662141A US 3662141 A US3662141 A US 3662141A US 734944 A US734944 A US 734944A US 3662141D A US3662141D A US 3662141DA US 3662141 A US3662141 A US 3662141A
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United States
Prior art keywords
microwave energy
base member
load
oven
heat
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Expired - Lifetime
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US734944A
Inventor
George W Schauer Jr
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Motors Liquidation Co
Original Assignee
General Motors Corp
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Publication date
Application filed by General Motors Corp filed Critical General Motors Corp
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Publication of US3662141A publication Critical patent/US3662141A/en
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    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/64—Heating using microwaves
    • H05B6/647—Aspects related to microwave heating combined with other heating techniques
    • H05B6/6491—Aspects related to microwave heating combined with other heating techniques combined with the use of susceptors
    • H05B6/6494—Aspects related to microwave heating combined with other heating techniques combined with the use of susceptors for cooking

Definitions

  • ABSTRACT This invention relates to a shelf for use in microwave ovens.
  • a base member made up of microwave energy absorptive material is shaped to conform to the interior perimeter of the cavity with which it is to be used for converting the microwave energy into heat.
  • Embedded within the base member are a plurality of rods of a heat conductive material arranged in a preselected pattern which will convey the heat generated within the microwave energy absorptive base material in the presence of microwave energy to an oven load,
  • the present invention relates to oven shelves and, more particularly, to oven shelves for use with microwave energy ovens.
  • a shelf for use with an oven cavity permeated with microwave energy wherein a plurality of rods of a heat conductive material embedded within a base member of microwave energy absorptive material shaped to conform to the interior perimeter of the cavity are arranged in a preselected pattern to conduct the heat produced in the base member material upon the absorption of microwave energy to an oven load.
  • FIG. 1 is a front view looking into a microwave oven cavity
  • FIG. 2 is a section view of FIG. 1 taken along line 2-2 and looking in the direction of the arrows, and,
  • FIG. 3 is a section view of FIG. 2 taken along line 3-3 and looking in the direction of the arrows.
  • a base member 10 which may be composed of a material which will readily absorb microwave energy, is shaped to conform to the interior perimeter of the oven.
  • a suitable material for base member 10 is a high temperature ceramic material.
  • a commercially available product of this type is marketed by I provided.
  • Embedded within base member 10 are a plurality of rod members 20 which may be composed of a heat conductive material which will conduct the heat produced in the support member 10 microwave energy absorptive material in the presence of microwave energy. Any metallic material such as copper or aluminum may be employed for rod members 20.
  • the rods 20 are arranged in a preselected pattern or grid as is clearly shown in FIG. 2.
  • the oven load 25 is placed upon the shelf with the bottom thereof in the proximity of the center of the pattern of rod members 20 and microwave energy is introduced into the oven cavity through a conventional microwave antenna 26.
  • the material of base member 10 will become heated in the presence of the microwave energy and rod members 20 will conduct the heat generated therein to the bottom of the oven load, conventional baking dish 25, thereby supplying heat thereto.
  • a shelf for use with oven cavities permeated with microwave energy comprising, a base member of a microwave energy absorptive material shaped to conform to the interior I perimeter of the cavity with which it is to be used and a plu- Emerson and Cumming, Inc. under the trademark EC- COSORB WG, BR and HT. It is to be specifically understood that this is not the only material of which base member 10 may rality of rods of a heat conductive material embedded within said base member and arranged in a preselected pattern which will convey the heat generated within the material of said base member in the presence of microwave energy to an oven load.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electric Ovens (AREA)

Abstract

This invention relates to a shelf for use in microwave ovens. A base member made up of microwave energy absorptive material is shaped to conform to the interior perimeter of the cavity with which it is to be used for converting the microwave energy into heat. Embedded within the base member are a plurality of rods of a heat conductive material arranged in a preselected pattern which will convey the heat generated within the microwave energy absorptive base material in the presence of microwave energy to an oven load.

Description

United States Patent Schauer, Jr.
May 9, 1972 [54] OVEN SHELF ADAPTED TO ABSORB MICROWAVE ENERGY AND CONDUCT HEAT TO A LOAD [72] Inventor: George W. Schauer, Jr., Dayton, Ohio [73] Assignee: General Motors Corporation, Detroit,
Mich.
[22] Filed: June 6, 1968 21 Appl. No.: 734,944
[52] US. Cl ..219/10.55 [51] Int. Cl. ...H05b 9/06 [58] Field of Search ..2l9/10.55
[56] References Cited UNITED STATES PATENTS 3,366,769 l/l968 Lima ..2l9/10.55
FOREIGN PATENTS OR APPLICATIONS 1,120,619 3/1959 Germany ..2l9/l0.55
Primary ExaminerJ. V. Truhe Assistant Examiner-Hugh D. Jaeger Attorney-W. E. Finken and Richard G. Stahr [5 7] ABSTRACT This invention relates to a shelf for use in microwave ovens. A base member made up of microwave energy absorptive material is shaped to conform to the interior perimeter of the cavity with which it is to be used for converting the microwave energy into heat. Embedded within the base member are a plurality of rods of a heat conductive material arranged in a preselected pattern which will convey the heat generated within the microwave energy absorptive base material in the presence of microwave energy to an oven load,
1 Claim, 3 Drawing Figures U ml OVEN SHELF ADAPTED T ABSORB MICROWAVE ENERGY AND CONDUCT HEAT TO A LOAD The present invention relates to oven shelves and, more particularly, to oven shelves for use with microwave energy ovens.
It is an object of this invention to provide an improved shelf for use with microwave energy ovens.
It is another object of this invention to provide an improved shelf for use with microwave energy ovens wherein the heat produced upon the absorption of microwave energy by a base member of microwave energy absorptive material is conducted to an oven load by a plurality of rods of a heat conductive material which are embedded within the material of the base member and arranged in a preselected pattern which will convey the heat generated therein to the load.
In accordance with this invention, a shelf for use with an oven cavity permeated with microwave energy is provided wherein a plurality of rods of a heat conductive material embedded within a base member of microwave energy absorptive material shaped to conform to the interior perimeter of the cavity are arranged in a preselected pattern to conduct the heat produced in the base member material upon the absorption of microwave energy to an oven load.
For a better understanding of the present invention, together with additional objects, advantages and features thereof, reference is made to the following description and accompanying drawing wherein FIG. 1 is a front view looking into a microwave oven cavity,
FIG. 2 is a section view of FIG. 1 taken along line 2-2 and looking in the direction of the arrows, and,
FIG. 3 is a section view of FIG. 2 taken along line 3-3 and looking in the direction of the arrows.
Referring to the FIGURES of the drawing, a base member 10, which may be composed of a material which will readily absorb microwave energy, is shaped to conform to the interior perimeter of the oven. One example of a suitable material for base member 10 is a high temperature ceramic material. A commercially available product of this type is marketed by I provided.
Embedded within base member 10 are a plurality of rod members 20 which may be composed of a heat conductive material which will conduct the heat produced in the support member 10 microwave energy absorptive material in the presence of microwave energy. Any metallic material such as copper or aluminum may be employed for rod members 20. To conduct the heat generated within the base member material to a load within the oven, which may be a conventional baking dish 25, the rods 20 are arranged in a preselected pattern or grid as is clearly shown in FIG. 2.
The oven load 25 is placed upon the shelf with the bottom thereof in the proximity of the center of the pattern of rod members 20 and microwave energy is introduced into the oven cavity through a conventional microwave antenna 26. The material of base member 10 will become heated in the presence of the microwave energy and rod members 20 will conduct the heat generated therein to the bottom of the oven load, conventional baking dish 25, thereby supplying heat thereto.
While a preferred embodiment of the present invention has been shown and described, it will be obvious to those skilled in the art that various modifications and substitutions may be made without departing from the spirit of the invention which is to be limited only within the scope of the appended claim.
1. A shelf for use with oven cavities permeated with microwave energy comprising, a base member of a microwave energy absorptive material shaped to conform to the interior I perimeter of the cavity with which it is to be used and a plu- Emerson and Cumming, Inc. under the trademark EC- COSORB WG, BR and HT. It is to be specifically understood that this is not the only material of which base member 10 may rality of rods of a heat conductive material embedded within said base member and arranged in a preselected pattern which will convey the heat generated within the material of said base member in the presence of microwave energy to an oven load.

Claims (1)

1. A shelf for use with oven cavities permeated with microwave energy comprising, a base member of a microwave energy absorptive material shaped to conform to the interior perimeter of the cavity with which it is to be used and a plurality of rods of a heat conductive material embedded within said base member and arranged in a preselected pattern which will convey the heat generated within the material of said base member in the presence of microwave energy to an oven load.
US734944A 1968-06-06 1968-06-06 Oven shelf adapted to absorb microwave energy and conduct heat to a load Expired - Lifetime US3662141A (en)

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US73494468A 1968-06-06 1968-06-06

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Cited By (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3783220A (en) * 1970-07-06 1974-01-01 Yamamizu Shoji Kk Method and apparatus for browning exterior surfaces of foodstuff in an electronic range
US3810248A (en) * 1970-10-19 1974-05-07 Husqvarna Vapenfabriks Ab Microwave heating apparatus
US3920944A (en) * 1970-08-18 1975-11-18 Hirst Microwave Ind Limited Method of cooking food employing both microwave and heat energy
US3934106A (en) * 1973-09-10 1976-01-20 Raytheon Company Microwave browning means
US3941968A (en) * 1975-03-27 1976-03-02 Raytheon Company Microwave browning plate
US3941967A (en) * 1973-09-28 1976-03-02 Asahi Kasei Kogyo Kabushiki Kaisha Microwave cooking apparatus
US3943320A (en) * 1975-06-19 1976-03-09 Raytheon Company Frankfurt searing tray for use with microwave energy
US3946188A (en) * 1975-06-19 1976-03-23 Raytheon Company Microwave heating apparatus with browning feature
US3946187A (en) * 1975-03-03 1976-03-23 Raytheon Company Microwave browning utensil
FR2331234A1 (en) * 1975-11-07 1977-06-03 Philips Nv MICROWAVE OVEN
US4184061A (en) * 1977-03-11 1980-01-15 Nippon Electric Glass Company, Limited Browning vessels which used together with microwave ovens
DE3490740T1 (en) * 1984-07-30 1986-09-18 Superwave Technology, Inc., Santa Clara, Calif. Microwave heating system
US4681996A (en) * 1982-12-16 1987-07-21 Cem Corporation Analytical process in which materials to be analyzed are directly and indirectly heated and dried by microwave radiation
US4701585A (en) * 1986-04-04 1987-10-20 Kidde Consumer Durables Corp. Microwave browning cookware
US4992638A (en) * 1988-06-22 1991-02-12 Alcan International Limited Microwave heating device with microwave distribution modifying means
US5075526A (en) * 1989-01-23 1991-12-24 Raytheon Company Disposable microwave package having absorber bonded to mesh
GB2252027A (en) * 1991-01-18 1992-07-22 Jae Chul Choi Oven shelf for a microwave heating oven
US5360964A (en) * 1992-02-17 1994-11-01 Samsung Electronics Co., Ltd. Microwave coffee maker having a hot plate heated by microwaves
US6359271B1 (en) 2000-10-27 2002-03-19 Turbochef Technologies, Inc. Apparatus for supporting foodstuffs in a microwave oven
WO2003065768A1 (en) * 2002-01-31 2003-08-07 Matsushita Electric Industrial Co., Ltd. High-frequency heating apparatus
US20050199618A1 (en) * 2004-03-12 2005-09-15 Maytag Corporation Microwave intensification system for rapid, uniform processing of food items
US20070045303A1 (en) * 2005-08-15 2007-03-01 Smith Christine B Multi-level stack-a-plate arrangement
US20080087662A1 (en) * 2003-04-25 2008-04-17 Matsushita Electric Industrial Co., Ltd. High frequency heating apparatus and its control method
US20090095741A1 (en) * 2007-10-15 2009-04-16 E.I. Du Pont De Nemours And Company Microwave field director structure with vanes having a conductive material thereon
US20090095747A1 (en) * 2007-10-15 2009-04-16 E.I. Du Pont De Nemours And Company Microwave Field Director Structure Having Vanes With Outer Ends Wrapped With A Conductive Wrapper
US20090095746A1 (en) * 2007-10-15 2009-04-16 E. I. Du Pont De Nemours And Company Microwave Field Director Structure Having Vanes Covered With A Conductive Sheath
EP2306785A1 (en) * 2008-06-25 2011-04-06 Panasonic Corporation Microwave heating device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1120619B (en) * 1959-03-14 1961-12-28 Homann Werke Wilhelm Homann Microwave oven
US3366769A (en) * 1964-12-11 1968-01-30 Philips Corp High frequency heating apparatus

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1120619B (en) * 1959-03-14 1961-12-28 Homann Werke Wilhelm Homann Microwave oven
US3366769A (en) * 1964-12-11 1968-01-30 Philips Corp High frequency heating apparatus

Cited By (37)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3783220A (en) * 1970-07-06 1974-01-01 Yamamizu Shoji Kk Method and apparatus for browning exterior surfaces of foodstuff in an electronic range
US3920944A (en) * 1970-08-18 1975-11-18 Hirst Microwave Ind Limited Method of cooking food employing both microwave and heat energy
US3810248A (en) * 1970-10-19 1974-05-07 Husqvarna Vapenfabriks Ab Microwave heating apparatus
US3934106A (en) * 1973-09-10 1976-01-20 Raytheon Company Microwave browning means
US3941967A (en) * 1973-09-28 1976-03-02 Asahi Kasei Kogyo Kabushiki Kaisha Microwave cooking apparatus
US3946187A (en) * 1975-03-03 1976-03-23 Raytheon Company Microwave browning utensil
US3941968A (en) * 1975-03-27 1976-03-02 Raytheon Company Microwave browning plate
US3946188A (en) * 1975-06-19 1976-03-23 Raytheon Company Microwave heating apparatus with browning feature
US3943320A (en) * 1975-06-19 1976-03-09 Raytheon Company Frankfurt searing tray for use with microwave energy
FR2331234A1 (en) * 1975-11-07 1977-06-03 Philips Nv MICROWAVE OVEN
US4184061A (en) * 1977-03-11 1980-01-15 Nippon Electric Glass Company, Limited Browning vessels which used together with microwave ovens
US4681996A (en) * 1982-12-16 1987-07-21 Cem Corporation Analytical process in which materials to be analyzed are directly and indirectly heated and dried by microwave radiation
DE3490740T1 (en) * 1984-07-30 1986-09-18 Superwave Technology, Inc., Santa Clara, Calif. Microwave heating system
US4701585A (en) * 1986-04-04 1987-10-20 Kidde Consumer Durables Corp. Microwave browning cookware
US4992638A (en) * 1988-06-22 1991-02-12 Alcan International Limited Microwave heating device with microwave distribution modifying means
US5075526A (en) * 1989-01-23 1991-12-24 Raytheon Company Disposable microwave package having absorber bonded to mesh
GB2252027A (en) * 1991-01-18 1992-07-22 Jae Chul Choi Oven shelf for a microwave heating oven
US5360964A (en) * 1992-02-17 1994-11-01 Samsung Electronics Co., Ltd. Microwave coffee maker having a hot plate heated by microwaves
US6359271B1 (en) 2000-10-27 2002-03-19 Turbochef Technologies, Inc. Apparatus for supporting foodstuffs in a microwave oven
US20050051543A1 (en) * 2002-01-31 2005-03-10 Matsushita Electric Industrial Co., Ltd. High-frequency heating apparatus
WO2003065768A1 (en) * 2002-01-31 2003-08-07 Matsushita Electric Industrial Co., Ltd. High-frequency heating apparatus
US7193194B2 (en) 2002-01-31 2007-03-20 Matsushita Electric Industrial Co., Ltd. High-frequency heating apparatus
US20070125775A1 (en) * 2002-01-31 2007-06-07 Matsushita Electric Industrial Co., Ltd. High-frequency heating apparatus with browning function
US7304279B2 (en) 2002-01-31 2007-12-04 Matsushita Electric Industrial Co., Ltd. High-frequency heating apparatus with browning function of food
US20080087662A1 (en) * 2003-04-25 2008-04-17 Matsushita Electric Industrial Co., Ltd. High frequency heating apparatus and its control method
US7582852B2 (en) 2004-03-12 2009-09-01 Acp, Inc. Microwave intensification system for rapid, uniform processing of food items
US20050199618A1 (en) * 2004-03-12 2005-09-15 Maytag Corporation Microwave intensification system for rapid, uniform processing of food items
US7667168B2 (en) * 2005-08-15 2010-02-23 Christine Brown Smith Multi-level stack-a-plate arrangement
US20070045303A1 (en) * 2005-08-15 2007-03-01 Smith Christine B Multi-level stack-a-plate arrangement
US20090095747A1 (en) * 2007-10-15 2009-04-16 E.I. Du Pont De Nemours And Company Microwave Field Director Structure Having Vanes With Outer Ends Wrapped With A Conductive Wrapper
US20090095746A1 (en) * 2007-10-15 2009-04-16 E. I. Du Pont De Nemours And Company Microwave Field Director Structure Having Vanes Covered With A Conductive Sheath
US20090095741A1 (en) * 2007-10-15 2009-04-16 E.I. Du Pont De Nemours And Company Microwave field director structure with vanes having a conductive material thereon
US8338765B2 (en) * 2007-10-15 2012-12-25 E I Du Pont De Nemours And Company Microwave field director structure having vanes with outer ends wrapped with a conductive wrapper
US8338764B2 (en) * 2007-10-15 2012-12-25 E I Du Pont De Nemours And Company Microwave field director structure having vanes covered with a conductive sheath
US8426785B2 (en) * 2007-10-15 2013-04-23 E I Du Pont De Nemours And Company Microwave field director structure with vanes having a conductive material thereon
EP2306785A1 (en) * 2008-06-25 2011-04-06 Panasonic Corporation Microwave heating device
EP2306785A4 (en) * 2008-06-25 2014-12-03 Panasonic Corp MICROWAVE HEATING DEVICE

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