US3465124A - Electrically heated thawing oven - Google Patents

Electrically heated thawing oven Download PDF

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US3465124A
US3465124A US551564A US3465124DA US3465124A US 3465124 A US3465124 A US 3465124A US 551564 A US551564 A US 551564A US 3465124D A US3465124D A US 3465124DA US 3465124 A US3465124 A US 3465124A
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thawing
oven
electrically heated
fan
installation cell
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US551564A
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Paul Sauer
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Burger Eisenwerke AG
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Burger Eisenwerke AG
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    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J39/00—Heat-insulated warming chambers; Cupboards with heating arrangements for warming kitchen utensils
    • A47J39/003—Heat-insulated warming chambers; Cupboards with heating arrangements for warming kitchen utensils with forced air circulation

Definitions

  • a thawing oven is made up of an installation cell and a rectangular-shaped thawing chamber.
  • the installation cell includes a fan and electric heating elements arranged around the fan.
  • a funnel-shaped air guide is positioned in the installation cell to form a communication between the installation cell and the thawing chamber.
  • the invention relates to a thawing oven, more particularly for the thawing and heating of low temperature cooled foods, wherein electrically heated hot air is subjected to forced circulation in the thawing mufiie.
  • the parts which are important to the operation of the oven such as fan, electrical heating elements and control elements are arranged about the actual thawing chamber in a housing integral therewith.
  • This has the disadvantage that a constructional modification to one part of the apparatus involves modifications to almost all the other parts of the apparatus. Also, cleaning of the fan impeller and the hot air dust is not possible or only possible with great difiiculty.
  • the thawing chamber and the operating equipment compartment can be arranged in any desired manner relatively to one another and a plurality of thawing ovens can be arranged side by side or one above the other.
  • FIG. 1 is a vertical longitudinal sectional view and FIG. 2 is a horizontal sectional view through a thawing oven according to the invention and FIGS. 3 and 4 show several thawing ovens combined to form a single apparatus, again vertical and horizontal sectional views respectively.
  • the thawing oven is composed of two units which are constructionally separate from one another, the operating equipment compartment 1 and the thawing muflle 2.
  • the operating equipment compartment 1 contains the fan motor 3 with the fan impeller 4 for circulating the air heated at the electrical heating elements 5, and for example the various control elements (not shown) such as a clock, thermostat or relays.
  • the push-in ledges 6 for accommodating the grids 8 supporting the food containers 7, and also baffle plates 9 for the hot air.
  • the fan 4 circulates the hot air in the manner indicated by arrows between the stages of the thawing oven.
  • the common thawing chamber 2 is situated between the eight operating equipment compartments 1.
  • the oven is so arranged that it can be efficiently charged with a grid-carrying car 13.
  • the units according to the invention can be supplemented as required up to many different oven sizes. There is no need to show further examples of embodiment here.
  • a rectangular-shaped, enclosed installation cell which contains all operating equipment for the apparatus, said operating equip-ment including a fan, electric heating means having heating elements arranged around said fan, and thermostatic control elements, and said fan being positioned centrally in said installation cell,
  • thawing mufile which is separable from said installation cell and which can be combined with the installation cell to receive a circulation of heated air from the installation cell, said thawing muflle having walls which can be closed and sealed when the thawing muffie is combined with the installation cell so as to define an enclosure for thawing and heating foodstuifs, and
  • a funnel-shaped air guide means positioned in said installation cell to form a communication between said fan and said thawing muflie when the thawing mufile is combined with the installation cell.

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  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Freezing, Cooling And Drying Of Foods (AREA)

Description

Sept. 2, 1969 P. SAUER 3,465,124
ELECTRICALLY HEATED THAWING OVEN Filed May 20, 1966 v 2 Sheets-Sheet 1 INVENTOR 'ywzmwwgwzmk ATTORNEYS Sept. 2, 1969 P. SAUER 3,465,124
ELECTRICALLY HEATED THAWING OVEN Filed May 20, 1966 2 Sheets-Sheet z Ill ILJLILILLL.
INVENTOR 19.4. wwziwwh ATTORNEYS United States Patent 3,465,124 ELECTRICALLY HEATED THAWING OVEN Paul Sauer, Dill, Kreis Burg, Germany, assignor to Burger Eisenwerke Aktiengesellschaft, Dill, Kreis Burg, Germany, a German company Filed May 20, 1966, Ser. No. 551,564 Int. Cl. A21b I/OO U.S. Cl. 219-400 2 Claims ABSTRACT OF THE DISCLOSURE A thawing oven is made up of an installation cell and a rectangular-shaped thawing chamber. The installation cell includes a fan and electric heating elements arranged around the fan. A funnel-shaped air guide is positioned in the installation cell to form a communication between the installation cell and the thawing chamber.
The invention relates to a thawing oven, more particularly for the thawing and heating of low temperature cooled foods, wherein electrically heated hot air is subjected to forced circulation in the thawing mufiie. In the known thawing ovens of this kind the parts which are important to the operation of the oven, such as fan, electrical heating elements and control elements are arranged about the actual thawing chamber in a housing integral therewith. This has the disadvantage that a constructional modification to one part of the apparatus involves modifications to almost all the other parts of the apparatus. Also, cleaning of the fan impeller and the hot air dust is not possible or only possible with great difiiculty.
To obviate these disadvantages, it is proposed according to the invention that all the operating equipment such as fans, heating elements, control elements and the like are combined in an operating equipment compartment which is constructionally separate from the thawing mufile.
In this way it is possible to modify the size of the thawing chamber without having to modify the operating equipment compartment. Also, the thawing chamber and the operating equipment compartment can be arranged in any desired manner relatively to one another and a plurality of thawing ovens can be arranged side by side or one above the other.
One example of embodiment of the invention is illustrated in the drawings wherein:
FIG. 1 is a vertical longitudinal sectional view and FIG. 2 is a horizontal sectional view through a thawing oven according to the invention and FIGS. 3 and 4 show several thawing ovens combined to form a single apparatus, again vertical and horizontal sectional views respectively.
The thawing oven is composed of two units which are constructionally separate from one another, the operating equipment compartment 1 and the thawing muflle 2. The operating equipment compartment 1 contains the fan motor 3 with the fan impeller 4 for circulating the air heated at the electrical heating elements 5, and for example the various control elements (not shown) such as a clock, thermostat or relays.
Arranged in the thawing muffle 2 are the push-in ledges 6 for accommodating the grids 8 supporting the food containers 7, and also baffle plates 9 for the hot air. The fan 4 circulates the hot air in the manner indicated by arrows between the stages of the thawing oven. The
I frontally opposite one another. The common thawing chamber 2 is situated between the eight operating equipment compartments 1. The oven is so arranged that it can be efficiently charged with a grid-carrying car 13. The units according to the invention can be supplemented as required up to many different oven sizes. There is no need to show further examples of embodiment here.
All internal parts of the oven are easily accessible and can be taken out for cleaning.
I claim:
1. In apparatus for thawing and heating of foodstuffs, especially deep-frozen foods, by means of forcibly circulated heated air, the improvement comprising the com bination of:
a rectangular-shaped, enclosed installation cell which contains all operating equipment for the apparatus, said operating equip-ment including a fan, electric heating means having heating elements arranged around said fan, and thermostatic control elements, and said fan being positioned centrally in said installation cell,
a rectangular-shaped thawing mufile which is separable from said installation cell and which can be combined with the installation cell to receive a circulation of heated air from the installation cell, said thawing muflle having walls which can be closed and sealed when the thawing muffie is combined with the installation cell so as to define an enclosure for thawing and heating foodstuifs, and
a funnel-shaped air guide means positioned in said installation cell to form a communication between said fan and said thawing muflie when the thawing mufile is combined with the installation cell.
2. The improvement of claim 1 and including means for combining a plurality of installation cells and thawing mufiies into a single, large unit.
References Cited UNITED STATES PATENTS 1,986,088 1/1935 Wild 219-400 X 2,434,847 1/ 1948 Hagen 98-38 2,491,420 12/1949 Scott 219-400 2,906,620 9/1959 Jung 219-400 X 2,966,573 12/ 1960 Hansen 126-21 X 3,170,541 2/1965 Werner 186-1 3,261,650 7/1966 Stromgvist 312-236 3,368,062 2/1968 Gramenius et al. 219-400 FOREIGN PATENTS 550,920 2/ 1943 Great Britain.
VOLODYMY R Y. MAYEWSKY, Primary Examiner U.S. Cl. X.R.
US551564A 1966-05-20 1966-05-20 Electrically heated thawing oven Expired - Lifetime US3465124A (en)

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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3643346A (en) * 1969-05-29 1972-02-22 Lestron International Corp Drying apparatus
US3827346A (en) * 1972-06-15 1974-08-06 Berger Eisenwerke Ag Food-treatment apparatus with grease-collection hood for air circulator
US4296299A (en) * 1979-12-31 1981-10-20 General Electric Company Apparatus for thawing frozen food in a refrigeration appliance
US4303820A (en) * 1979-12-31 1981-12-01 General Electric Company Capacitative apparatus for thawing frozen food in a refrigeration appliance
US4333521A (en) * 1979-12-31 1982-06-08 General Electric Company Apparatus for thawing frozen food
US5185126A (en) * 1991-07-10 1993-02-09 Raytheon Company Infectious waste disposal unit
US6844530B2 (en) 2003-04-10 2005-01-18 Maytag Corporation Thaw-server system for convection cooking appliance
US20060272632A1 (en) * 2005-06-01 2006-12-07 Maytag Corp. Airflow system for a convection oven
WO2014040835A1 (en) * 2012-09-11 2014-03-20 Ebm-Papst Mulfingen Gmbh & Co. Kg Wall ring for a fan with heating element
US20170055774A1 (en) * 2015-09-01 2017-03-02 Illinois Tool Works, Inc. Rf deep fat fryer

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1986088A (en) * 1932-11-11 1935-01-01 Wild Barfield Electr Furnaces Electric oven
GB550920A (en) * 1941-06-27 1943-02-01 William Wycliffe Spooner Improvements in the treatment of food by heat transference
US2434847A (en) * 1945-03-09 1948-01-20 Westinghouse Electric Corp Air conditioning unit having a reversible fan wheel
US2491420A (en) * 1946-09-04 1949-12-13 Lyons & Co Ltd J Oven
US2906620A (en) * 1956-02-21 1959-09-29 Burger Eisenwerke Gmbh Method of de-freezing and heating deep-frozen foods
US2966573A (en) * 1960-12-27 hansen
US3170541A (en) * 1961-12-18 1965-02-23 Automatic Canteen Co Food vending assembly
US3261650A (en) * 1964-02-21 1966-07-19 Electrolux Ab Food heating and handling structure
US3368062A (en) * 1963-06-13 1968-02-06 Electrolux Ab Apparatus for regulating a heating oven to control thawing of frozen food

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2966573A (en) * 1960-12-27 hansen
US1986088A (en) * 1932-11-11 1935-01-01 Wild Barfield Electr Furnaces Electric oven
GB550920A (en) * 1941-06-27 1943-02-01 William Wycliffe Spooner Improvements in the treatment of food by heat transference
US2434847A (en) * 1945-03-09 1948-01-20 Westinghouse Electric Corp Air conditioning unit having a reversible fan wheel
US2491420A (en) * 1946-09-04 1949-12-13 Lyons & Co Ltd J Oven
US2906620A (en) * 1956-02-21 1959-09-29 Burger Eisenwerke Gmbh Method of de-freezing and heating deep-frozen foods
US3170541A (en) * 1961-12-18 1965-02-23 Automatic Canteen Co Food vending assembly
US3368062A (en) * 1963-06-13 1968-02-06 Electrolux Ab Apparatus for regulating a heating oven to control thawing of frozen food
US3261650A (en) * 1964-02-21 1966-07-19 Electrolux Ab Food heating and handling structure

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3643346A (en) * 1969-05-29 1972-02-22 Lestron International Corp Drying apparatus
US3827346A (en) * 1972-06-15 1974-08-06 Berger Eisenwerke Ag Food-treatment apparatus with grease-collection hood for air circulator
US4296299A (en) * 1979-12-31 1981-10-20 General Electric Company Apparatus for thawing frozen food in a refrigeration appliance
US4303820A (en) * 1979-12-31 1981-12-01 General Electric Company Capacitative apparatus for thawing frozen food in a refrigeration appliance
US4333521A (en) * 1979-12-31 1982-06-08 General Electric Company Apparatus for thawing frozen food
US5185126A (en) * 1991-07-10 1993-02-09 Raytheon Company Infectious waste disposal unit
US6844530B2 (en) 2003-04-10 2005-01-18 Maytag Corporation Thaw-server system for convection cooking appliance
US20060272632A1 (en) * 2005-06-01 2006-12-07 Maytag Corp. Airflow system for a convection oven
US7411160B2 (en) 2005-06-01 2008-08-12 Whirlpool Corporation Airflow system for a convection oven
WO2014040835A1 (en) * 2012-09-11 2014-03-20 Ebm-Papst Mulfingen Gmbh & Co. Kg Wall ring for a fan with heating element
US9816526B2 (en) 2012-09-11 2017-11-14 Ebm-Papst Mulfingen Gmbh & Co. Kg Wall ring for a fan with heating element
US20170055774A1 (en) * 2015-09-01 2017-03-02 Illinois Tool Works, Inc. Rf deep fat fryer

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