Patent US3908533A successfully refreshed from Google Patents.
US3908533A
Expired / Lapsed
US
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Apparatus for continuously cooking food in sequential oven section of an elongated oven
Assignee: Electrolux AB
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Filing: 1973-04-04
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Granted: 1975-09-30
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Expires: 1993-04-04
Abstract
Abstract An apparatus and method of continuously cooking various food products which are transported through an elongated oven. The latter is constituted of a series of sequential oven sections in which each has a separate system for circulating a hot gaseous medium at high velocity in a direction transverse to the path of movement of the food products through the oven. Each system has individual means for adjustment and control of the temperature therein.
Inventors
- 👤 Kurt Gunnar Fagerstrom
- 👤 Bertil Henry Goransson
- 👤 Per-Olov Hellstrom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:51
CPC Classifications
A; A21; A21B; A21B1/00; A21B1/42; A21B1/48; A21B1/02; A21B1/24; A21B1/245; A21B1/40; A21B3/00; A21B3/07; A23; A23L; A23L5/00; A23L5/10; A23L5/17
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
218 words
Apparatus for continuously cooking foods in a sequential arranGement comprising an elongated oven having a plurality of oven sections arranged in tandem, a conveying means for transporting the foods sequentially through each of the oven sections, a gaseous medium in each oven section, fan and heating members in each oven section for circulating said gaseous medium over the foods on the conveying means in circulation paths that are substantially transverse to the path of movement of said conveying means, first guide members in the circulation paths for causing said heated gas to flow over the foods on the conveying means in two separate paths in which one path is above the conveying means and the other path is below said conveying means, each of said oven sections being provided with an oven insert having second guide members, said second guide member causing a turbulent flow of gas above and below said conveying means, said oven insert being further provided with a box-like structure positioned adjacent to the conveying means and having a long slit extending substantially parallel to the plane of the conveying means and forming an inlet opening for the circulating gas, and an opening in said box-like structure aligned with said slit forming an outlet for the gas and communicating with the inlet of the fan.
Claim 2
Dependent Claim
218 words
Apparatus for continuously cooking foods in a sequential arranGement comprising an elongated oven having a plurality of oven sections arranged in tandem, a conveying means for transporting the foods sequentially through each of the oven sections, a gaseous medium in each oven section, fan and heating members in each oven section for circulating said gaseous medium over the foods on the conveying means in circulation paths that are substantially transverse to the path of movement of said conveying means, first guide members in the circulation paths for causing said heated gas to flow over the foods on the conveying means in two separate paths in which one path is above the conveying means and the other path is below said conveying means, each of said oven sections being provided with an oven insert having second guide members, said second guide member causing a turbulent flow of gas above and below said conveying means, said oven insert being further provided with a box-like structure positioned adjacent to the conveying means and having a long slit extending substantially parallel to the plane of the conveying means and forming an inlet opening for the circulating gas, and an opening in said box-like structure aligned with said slit forming an outlet for the gas and communicating with the inlet of the fan.
Claim 3
Dependent Claim
181 words
Apparatus for continuously cooking foods in a sequential arrangement comprising an elongated oven having a plurality of oven sections arranged in tandem, a conveying means for transporting the foods sequentially through each of the oven sections, means for circulating air supplied to the apparatus from the atmosphere, such means being a fan wheel in each oven section for circulating said air at high velocity over the foods on the conveying means in paths that are substantially transverse to the path of movement of said conveying means, heating means in each oven section adjacent to said fan wheel, drive means for said fan wheel, means for conveying said atmospheric air to a center region of said fan wheel whereupon said air is projected radially into contact with said heating means and into two separate paths, one of said paths being above the conveying means and the other of said paths being below said conveying means, and guide members provided with adjustable elements for causing said heated air to flow over and to form a turbulence upon the foods on the conveying means.
Claim 4
Dependent Claim
181 words
Apparatus for continuously cooking foods in a sequential arrangement comprising an elongated oven having a plurality of oven sections arranged in tandem, a conveying means for transporting the foods sequentially through each of the oven sections, means for circulating air supplied to the apparatus from the atmosphere, such means being a fan wheel in each oven section for circulating said air at high velocity over the foods on the conveying means in paths that are substantially transverse to the path of movement of said conveying means, heating means in each oven section adjacent to said fan wheel, drive means for said fan wheel, means for conveying said atmospheric air to a center region of said fan wheel whereupon said air is projected radially into contact with said heating means and into two separate paths, one of said paths being above the conveying means and the other of said paths being below said conveying means, and guide members provided with adjustable elements for causing said heated air to flow over and to form a turbulence upon the foods on the conveying means.
Claim 5
Dependent Claim
202 words
Apparatus for continuously cooking foods in a sequential arrangement comprising an elongated oven having a plurality of oven sections arranged in tandem, conveying means for transporting the foods sequentially through each of the oven sections, means for circulating air drawn in from the atmosphere, such means being a fan wheel in each oven section for circulating said air at high velocity in paths over and under the foods on the conveying means and to accomplish the heat transfer by convection, the flow paths being substantially transverse to the path of movement of said conveying means, heating means in each oven section adjacent to said fan wheel, drive means for said fan wheel, an oven insert having adjustable guide members for each of the oven sections, said oven insert being removable as a unit from its respective oven section, means for conducting said air drawn in from the atmosphere to said fan wheel whereby the air is projected radially into contact with said heating means into one path above and another path below said conveying means, and each of said oven sections being so shaped to provide a gradually reduced flow area rearwardly thereby providing a uniform flow velocity along the oven insert.
Claim 6
Dependent Claim
202 words
Apparatus for continuously cooking foods in a sequential arrangement comprising an elongated oven having a plurality of oven sections arranged in tandem, conveying means for transporting the foods sequentially through each of the oven sections, means for circulating air drawn in from the atmosphere, such means being a fan wheel in each oven section for circulating said air at high velocity in paths over and under the foods on the conveying means and to accomplish the heat transfer by convection, the flow paths being substantially transverse to the path of movement of said conveying means, heating means in each oven section adjacent to said fan wheel, drive means for said fan wheel, an oven insert having adjustable guide members for each of the oven sections, said oven insert being removable as a unit from its respective oven section, means for conducting said air drawn in from the atmosphere to said fan wheel whereby the air is projected radially into contact with said heating means into one path above and another path below said conveying means, and each of said oven sections being so shaped to provide a gradually reduced flow area rearwardly thereby providing a uniform flow velocity along the oven insert.
Claim 7
Dependent Claim
34 words
Apparatus as claimed in claim 2, wherein each of said oven sections is provided with a door, said fan wheel being mounted on the inside of said door and surrounded by said heating means.
Claim 8
Dependent Claim
28 words
Apparatus as claimed in claim 3, wherein the shape of each oven section constitutes sloped opposite walls which define air flow paths that gradually diminish in cross section.
Claim 9
Dependent Claim
29 words
Apparatus as claimed in claim 2 further provided with an outlet for the Air drawn in from the atmosphere utilized in the circulation paths, said outlet having a valve.
Claim 10
Dependent Claim
22 words
Apparatus as claimed in claim 2 further comprising means for setting and controlling the air temperature in each of said oven sections.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-09-29 | 1979-03-31 | 1979-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-29 | 1983-03-31 | 1983-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-29 | 1987-03-31 | 1987-09-30 | $7700.00 | Window Closed / Lapsed |