US3812837A - Cooking oven - Google Patents

Cooking oven Download PDF

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Publication number
US3812837A
US3812837A US00360166A US36016673A US3812837A US 3812837 A US3812837 A US 3812837A US 00360166 A US00360166 A US 00360166A US 36016673 A US36016673 A US 36016673A US 3812837 A US3812837 A US 3812837A
Authority
US
United States
Prior art keywords
chamber
casing
blower
oven
partition plate
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US00360166A
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English (en)
Inventor
T Takase
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Rinnai Corp
Original Assignee
Rinnai Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Rinnai Corp filed Critical Rinnai Corp
Application granted granted Critical
Publication of US3812837A publication Critical patent/US3812837A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C15/00—Details
    • F24C15/32—Arrangements of ducts for hot gases, e.g. in or around baking ovens
    • F24C15/322—Arrangements of ducts for hot gases, e.g. in or around baking ovens with forced circulation

Definitions

  • ABSTRACT A cooking oven comprising a heating chamber divided by a partition wall to form a rear blower chamber containing a blower.
  • the partition wall is provided with an opening leading to the blower chamber so that heated air from a combustion chamber is directly drawn from the combustion chamber to the blower chamber.
  • a pair of left and right side plates project forwardly from opposite side edges of the partition plate to form air passages communicating between the interior of the blower chamber and the front portion of the interior of the heating chamber.
  • a portion of a rear wall of the heating chamber is bent into substantially the same plane as the partition plate and an exhaust opening leading to ambient atmosphere is formed in the bent portion.
  • the partition plate and the side plates are formed integrally and are detachably mounted within the heating chamber.
  • This invention relates to a cooking oven of the type in which hot air is forcedly circulated within a heating chamber by a blower.
  • An object of the invention is to provide a cooking oven of the above type which avoids the above disadvantage.
  • a further object of the invention is to provide a cooling oven of the above type in which the heated air from the combustion chamber is directly conducted into the blower chamber and then into the heating chamber, exhaust taking place from the heating chamber.
  • a cooking oven of the above type comprising a casing for a heating chamber including side walls and a rear wall, a partition plate spaced from said rear wall to define a blower chamber therewith, side plates secured to said rear wall to form an integral assembly therewith, said side plates being spaced from said side walls of the casing to define passages therewith which lead from the blower chamber into the heating chamber, a combustion chamber beneath said heating chamber in which heated air is produced, said partition plate having an opening therein which opens into the blower chamber, a duct extending from said combustion chamber and having an outlet facing the opening in said partition plate to conduct heated air directly from the combustion chamber to the blower chamber, and blower means in said blower chamber to draw heated air from the combustion chamber directly into the blower chamber and then drive the air via said passages into the heating chamber, said rear wall of the casing including a portion extending in substantially the same plane as said partition plate and in continuation thereof, said portion of the casing being provided with an exhaust outlet leading into said heating chamber and
  • said assembly is detachably supported within the casing.
  • FIG. 1 is a sectional side view of one embodiment of a cooking oven according to the invention.
  • FIG. 2 is a top plan view of the oven
  • FIG. 3 is a sectional view taken along line IlI--III in FIG. 1.
  • a cooking oven having a heating chamber 1 which is divided by a rear partition wall 3 having an-opening 2 so as to form at its rear portion a blower chamber 4.
  • a blower 5 is mounted in the blower chamber 4 to face the opening 2, and a pair of left and right side plates 6, project forwards from the opposite side edges of the partition plate 3 to form on both external surfaces of plates 6 air passages 7 communicating between the interior of the blower chamber 4 and the front portion of the interior of the heating chamber 1.
  • a hot air duct 9 is connected to a combustion chamber 8 disposed below heating chamber 1 and the duct 9 opens in front of the opening 2.
  • a portion 10a of a rear wall 10 of a casing for the heating chamber 1 is positioned in substantially the same plane as the foregoing partition plate 3 and an exhaust opening 11 is formed in portion 10a connected to the exterior.
  • partition plate 3 and the side plates 6 are formed integrally and are detachably mounted within the heating chamber 1.
  • the hot air duct 9 is also detachable from chamber 1, separately from or together with the partition plate 3.
  • the hot air duct 9 is formed integral with an upper wall of the combustion chamber 8.
  • numeral 12 denotes an outer housing and numeral 13 denotes a front door providing access to the interior of the oven.
  • the casing of the heating chamber is externally insulated in conventional manner and is spaced from the outer housing to minimize the temperature of the outer housing.
  • the exhaust opening 11 formed in the upper portion 10a of the rear side wall 10 of the heating chamber 1 is in communication with the ambient atmosphere via an exhaust conduit 14 extending from opening 11 to the outer casing 12.
  • the opening 11 is in immediate proximity to the top wall of the casing substantially at the corner which is formed between the top and rear walls of the casing.
  • the exhaust conduit is formed by respective bent portions of the upper wall and rear wall of the heating chamber casing.
  • a lower portion 10b of the rear side wall 10 is bent rearwards to form at the front thereof the blower chamber 4, the partition plate 3 being so placed as to cover the front of the blower chamber and be substantially in the same plane as the upper portion 10a so as to abut the same.
  • the partition plate 3 and the side plates 6 projecting forwards from the opposite side edges thereof, are integrally formed as stated previously, and the assembly is placed on a floor plate 15 within the heating chamber 1 and is detachably secured thereto.
  • the blower 5 is connected, via a pulley 17 mounted on a rearwardly extending shaft 16 of the blower, to an electric motor 18 mounted therebelow in the space between the heating chamber and the outer housing.
  • the combustion chamber 8 is formed under the floor plate 15 and has a gas burner 19 mounted therein.
  • the combustion chamber is provided in its lower surface with an air supply opening 20.
  • Ledges 21 are provided at several levels on the inner surfaces of the side plates 6, so that cooking pans or the like may be supported thereon.
  • the fresh hot air produced within the combustion chamber 8 is supplied in entirety to the interior of the heating chamber 1 for being used for cooking by heat, whereby the deficiency of the conventional ovens that a portion of the fresh hot air is directly discharged to the exterior is eliminated.
  • the thermal efficiency is improved and the time for the oven to reach operating temperature at starting is extremely shortened.
  • the integral partition plate 3 and side plates 6 can be removed, for example, after use, so it can be easily cleaned while also facilitating cleaning of the interior of the heating chamber 1 and the interior of the blower chamber 5.
  • a cooking oven comprising a casing for a heating chamber including side walls, a top wall, and a rear wall, a partition plate spaced from said rear wall to define a blower chamber therewith, side plates secured to said rear wall to form an integral assembly therewith, said side plates being spaced from said side walls of the casing to define passages therewith which lead from the blower chamber into the heating chamber, a combustion chamber beneath said heating chamber in which heated air is produced, said partition plate having an opening therein which opens into the blower chamber, a duct extending from said combustion chamber and having an outlet facing the opening in said partition plate to conduct heated air directly from the combustion chamber to the blower chamber, a blower means in said blower chamber to draw heated air from the combustion chamber directly into the blowerchamber and then drive the air via said passages into the heating chamber, said rear wall of the casing including a portion extending in substantially the same plane as said partition plate and in continuation thereof, said portion of the casing extending substantially perpendicularly to said top wall to form a corner
  • An oven as claimed in claim 1 comprising a drive motor mounted outside the casing, and means coupling the drive motor to the blower means.
  • An oven as claimed in claim 7 comprising an upper wall for said combustion chamber detachably sup ported in said casing, said duct being secured to said upper wall for removal therewith.
  • An oven as claimed in claim 1 comprising support ledges on the side plates at a plurality of levels.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Baking, Grill, Roasting (AREA)
US00360166A 1973-01-17 1973-05-14 Cooking oven Expired - Lifetime US3812837A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1973007558U JPS515505Y2 (enrdf_load_html_response) 1973-01-17 1973-01-17

Publications (1)

Publication Number Publication Date
US3812837A true US3812837A (en) 1974-05-28

Family

ID=11669121

Family Applications (1)

Application Number Title Priority Date Filing Date
US00360166A Expired - Lifetime US3812837A (en) 1973-01-17 1973-05-14 Cooking oven

Country Status (4)

Country Link
US (1) US3812837A (enrdf_load_html_response)
JP (1) JPS515505Y2 (enrdf_load_html_response)
AU (1) AU476029B2 (enrdf_load_html_response)
GB (1) GB1421251A (enrdf_load_html_response)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4498453A (en) * 1981-11-25 1985-02-12 Matsushita Electric Industrial Co., Ltd. Cooking appliance
US5337654A (en) * 1992-04-29 1994-08-16 Northland Aluminum Products, Inc. Portable oven air circulator
US6810792B1 (en) 2003-12-17 2004-11-02 David B. Knight & Associates, Inc. Barbecue oven having improved heat circulation

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5276468A (en) * 1975-12-22 1977-06-27 Rinnai Kk Hot air type oven
JPS5731224Y2 (enrdf_load_html_response) * 1976-08-02 1982-07-09
CA1114262A (en) * 1979-01-16 1981-12-15 Raytheon Company Gas burner convection oven

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3590803A (en) * 1968-07-20 1971-07-06 Burger Eisenwerke Ag Food-treatment apparatus with gas-circulating means
US3710775A (en) * 1971-12-13 1973-01-16 Rinnai Kk Hot air cooking oven

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3590803A (en) * 1968-07-20 1971-07-06 Burger Eisenwerke Ag Food-treatment apparatus with gas-circulating means
US3710775A (en) * 1971-12-13 1973-01-16 Rinnai Kk Hot air cooking oven

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4498453A (en) * 1981-11-25 1985-02-12 Matsushita Electric Industrial Co., Ltd. Cooking appliance
US5337654A (en) * 1992-04-29 1994-08-16 Northland Aluminum Products, Inc. Portable oven air circulator
US6810792B1 (en) 2003-12-17 2004-11-02 David B. Knight & Associates, Inc. Barbecue oven having improved heat circulation

Also Published As

Publication number Publication date
GB1421251A (en) 1976-01-14
AU5628273A (en) 1974-12-05
JPS515505Y2 (enrdf_load_html_response) 1976-02-16
JPS49110097U (enrdf_load_html_response) 1974-09-19
AU476029B2 (en) 1976-09-09

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