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WO1999007267A1 - Appareil de cuisson et ensemble gril associe - Google Patents

Appareil de cuisson et ensemble gril associe Download PDF

Info

Publication number
WO1999007267A1
WO1999007267A1 PCT/CA1998/000763 CA9800763W WO9907267A1 WO 1999007267 A1 WO1999007267 A1 WO 1999007267A1 CA 9800763 W CA9800763 W CA 9800763W WO 9907267 A1 WO9907267 A1 WO 9907267A1
Authority
WO
WIPO (PCT)
Prior art keywords
grill assembly
base plate
heat
food
cooked
Prior art date
Application number
PCT/CA1998/000763
Other languages
English (en)
Inventor
Jean-Pierre Patenaude
Original Assignee
Woodflame Inc.
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 Woodflame Inc. filed Critical Woodflame Inc.
Priority to AU88465/98A priority Critical patent/AU8846598A/en
Publication of WO1999007267A1 publication Critical patent/WO1999007267A1/fr

Links

Classifications

    • 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
    • A47J37/00—Baking; Roasting; Grilling; Frying
    • A47J37/06—Roasters; Grills; Sandwich grills
    • A47J37/07—Roasting devices for outdoor use; Barbecues
    • A47J37/0704—Roasting devices for outdoor use; Barbecues with horizontal fire box
    • 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
    • A47J37/00—Baking; Roasting; Grilling; Frying
    • A47J37/06—Roasters; Grills; Sandwich grills
    • A47J37/067—Horizontally disposed broiling griddles
    • 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
    • A47J37/00—Baking; Roasting; Grilling; Frying
    • A47J37/06—Roasters; Grills; Sandwich grills
    • A47J37/07—Roasting devices for outdoor use; Barbecues
    • A47J37/0754—Roasting devices for outdoor use; Barbecues with blowers providing forced air circulation

Definitions

  • the present invention relates generally to the field of cooking apparatus and accessories thereof. More particularly, it relates to a grill assembly for a cooking apparatus that improves heat transfer and provides taste cooking by radiation, conduction and convection at the same time.
  • the present invention relates to an arrangement of a means to collect heat and to transfer it to cook food. It is a compact one piece assembly acting as a heat retainer and transfer. It collects, gathers and provides, through the arrangement of its components, selective heat transfer process from a heat source to the food to be cooked.
  • Cooking is a transformation process whereby the heat modifies food for consumption. The transformation process involves or is affected by temperature, time, equipment and medium. Food cooking is done for appearance, flavour and sometimes conservation.
  • the processes of heat transfer are radiation, conduction and convection, each process having its own characteristics and producing specific transformation of the food in its structure, appearance and flavour. Cooking process involves heat consumption. Considering a heat saving in this field would amount to huge saving.
  • This invention has been conceived to operate with a flame burner as the heat source because it is the most widely used. However, it could easily be adapted to different heat sources.
  • Well known in the field of grills used with cooking apparatus there is obviously the typical grill which consists of an assembly of parallel metal bars that is placed over any type of source of heat and that serves to support the food over the heat.
  • a drawback with that type of grill which is commonly used in ovens, with portable stoves used in camping or with outdoor barbecues is that it allows the food to be cooked randomly by convection and a little bit by conduction and by radiation. In other words, they lack of control over convection, conduction and radiation.
  • the cooking apparatus which uses that type of grill are generally not adapted or are not designed for saving energy. A lot of heat produced is lost with that type of grill and cooking apparatus. There is still presently a need for an energy saving grill that will allow food to be cooked at the same time by conduction, convection and radiation on a ratio base to obtain a special taste.
  • An object of the present invention is to propose a grill assembly for a cooking apparatus that will satisfy the above- mentioned needs.
  • a grill assembly characterized in that it comprises a housing including a cooking surface, sidewalls skirting the cooking surface and a bottom wall including an inlet adapted to be tightly connected to a source of heat to prevent heat loss and to promote collection of the heat in the housing.
  • the grill assembly is further characterized in that the cooking surface is made of metal and comprises a base plate and a plurality of parallel ridges projecting from the base surface for supporting food to be cooked and spacing the same from the base plate, thereby allowing the food to be cooked by radiation and conduction.
  • the base plate is provided with a plurality of slits located between the ridges for allowing a flow of hot gases through the base plate and the food to be also cooked by convection.
  • a support is provided to support the housing over a source of heat.
  • This grill assembly because of its specific characteristics, provides heat transfer from the heat source to the food in an energy saving manner while allowing the food to be cooked by radiation, conduction and convection.
  • Another object of the present invention is to propose a cooking apparatus that comprises a grill assembly as described hereinbefore.
  • a cooking apparatus including a grill assembly according to a preferred embodiment of the present invention will now be described in more details with reference to the appended drawings.
  • Figure 1 is a cross-sectional side elevational view of a cooking apparatus including a grill assembly according to the present invention.
  • Figure 2 is a cross-sectional front elevational view of the cooking apparatus of figure 1.
  • Figure 3 is an enlarged perspective partly cut view of a half unit of the grill assembly of figure 1.
  • Figure 4 is a cross-sectional side view of a grill assembly similar to the one of figure 1 shown without the deflector and the handle.
  • the cooking apparatus (10) in a general manner comprises a grill assembly (12), a tubular burner (14) and a support to mount the grill assembly (12) over the burner (14) and which preferably consists of an open container (16) adapted to receive therein the burner (14) in an upright position.
  • the burner (14) is mounted on a dome-shaped member (79) set on the bottom wall (17) of the container (16).
  • the dome-shaped member (79) with the bottom wall (17) of the container (16) are defining an air-receiving chamber (70) devised to provide air in the combustion chamber (60) for the combustion of a fuel therein.
  • a pump means (74) is connected to the air-receiving chamber via a conduit (72).
  • the container (16) has sidewalls (18) each having an upper edge (20) adapted to receive and support a corresponding outer edge (22) of the grill assembly (12) such that the grill (12) is mountable over the burner (14) which is enclosed in the container (16). More particularly, the upper edge (20) of each of the sidewalls (18) defines an L-shaped shoulder on which a corresponding outer edge (22) of the grill (12) is resting.
  • the grill assembly (12) comprises a housing (30) including a cooking surface (32), sidewalls (34) skirting the cooking surface (32) and a bottom wall (36).
  • the bottom wall (36) includes an inlet (38) which is preferably a circular aperture provided in that bottom wall (36) adapted to be tightly connected to the upper edge (15) of the burner (14) from which the heat is exiting to prevent heat loss and to promote collection of the heat in the housing (30).
  • the edge (15) or contour of the burner (14) is fitting close in the circular aperture (39) of the bottom wall (38). In this manner, almost no heat from the burner is lost as it is transferred to the housing (30).
  • the grill assembly is preferably a circular aperture provided in that bottom wall (36) adapted to be tightly connected to the upper edge (15) of the burner (14) from which the heat is exiting to prevent heat loss and to promote collection of the heat in the housing (30).
  • the edge (15) or contour of the burner (14) is fitting close in the circular aperture (39) of the bottom wall (38). In this manner, almost no heat from the
  • the grill assembly (12) which is particularly adapted to be used with a portable stove, consists of two half units (12a, 12b) that together constitute the whole grill assembly (12).
  • the grill assembly may very well consist of a single unit, as shown in figure 4.
  • the cooking surface (32) is made of metal, preferably stainless steel and comprises a base plate (42) and a plurality of parallel ridges (40) projecting from the base plate (42) for supporting food (44) to be cooked and spacing the same from the base plate (42), thereby allowing the food to be cooked by radiation and conduction.
  • the base plate (42) is provided with a plurality of slits (46), as best seen in figure 3, located between the ridges (40) for allowing a flow of hot gases, as shown in figure 4, through the base plate (42) and the food to be also cooked by convection.
  • the cooking surface (32) consists of a corrugated metallic plate comprising ridges (40) having an apex (41) of a given width allowing the food (44) to be cooked by conduction, the ridges (40) alternating with grooves forming the base plate (42).
  • each slit (46) is disposed in rows in the base plate (12). Moreover, each slit (46) is preferably transversely filling the space defined between two adjacent ridges (40).
  • the heat from the burner (14) (not shown) is directly transferred to the cooking surface (32) of the grill assembly (12) and then it is transferred from the cooking surface (32) to the food (44) by radiation from the base plate (42), by conduction from the apex of the ridges (40) and by convection from the flow of hot gases through the base plate (42) via the slits (46) therein.
  • the grill assembly (12) illustrated further comprises a deflector (50) within the housing (30), as best shown in figures 1 and 2, mounted above the inlet (38) of the bottom wall (36) to buffer and distribute a flow of gas from the heat source.
  • the deflector (50) spread and elongate the gas fuel in store to allow a spread combustion.
  • the deflector (50) is a convex metallic plate extending centrally and transversely within the housing (30).
  • the cooking surface (32), the sidewalls (34) and the bottom wall (36) of the grill assembly (12) are preferably made of a metal of poor thermal conductivity, most preferably stainless steel .
  • the grill assembly (12) may advantageously include handles (52), as shown in figure 1.
  • the grill assembly acts as a heat retainer and transfer device which collects most of the heat and promotes specific heat transfer process to the food to be cooked. This invention reduces heat required and improves heat transfer in cooking.
  • the food is cooked through conduction by contact with a support surface heated by convection, through convection in a direct manner from a flow of gases and through radiation in a direct manner from the plate.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Baking, Grill, Roasting (AREA)

Abstract

Cet ensemble gril (12) comprend un logement (30) présentant une surface de cuisson (32), des parois latérales (34) partant vers le bas depuis la surface de cuisson (32), ainsi qu'une paroi inférieure (36) comportant un orifice d'entrée (38) conçu pour être relié de manière étanche à une source de chaleur, afin d'empêcher toute perte de chaleur et favoriser le recueillement de la chaleur dans le logement (30). La surface de cuisson (32) comprend une plaque de base (42) ainsi qu'une pluralité de nervures parallèles (40) saillant de la plaque de base (42), destinées à soutenir les aliments à cuire tout en espaçant ceux-ci de la plaque de base (42), et permettant ainsi de cuire les aliments par rayonnement et conduction. La plaque de base (42) est pourvue de plusieurs fentes (46) situées entre les nervures (40) et servant au passage d'un écoulement de gaz chauds à travers la plaque de base (42) ainsi qu'à la cuisson d'aliments par convection. On a monté un élément (16) destiné à supporter le logement (30) au-dessus d'une source de chaleur. L'invention permet de diminuer la chaleur requise et constitue un moyen de régulation de différents types de transfert de la chaleur.
PCT/CA1998/000763 1997-08-08 1998-08-07 Appareil de cuisson et ensemble gril associe WO1999007267A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU88465/98A AU8846598A (en) 1997-08-08 1998-08-07 Cooking apparatus and grill assembly thereof

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CA2,211,495 1997-08-08
CA 2211495 CA2211495A1 (fr) 1997-08-08 1997-08-08 Appareil de cuisson

Publications (1)

Publication Number Publication Date
WO1999007267A1 true WO1999007267A1 (fr) 1999-02-18

Family

ID=4161116

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CA1998/000763 WO1999007267A1 (fr) 1997-08-08 1998-08-07 Appareil de cuisson et ensemble gril associe

Country Status (3)

Country Link
AU (1) AU8846598A (fr)
CA (1) CA2211495A1 (fr)
WO (1) WO1999007267A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1108387A3 (fr) * 1999-12-16 2001-09-26 Snow Peak, Inc. Casier de brûleur
WO2004004527A1 (fr) * 2002-07-03 2004-01-15 Woodflame Inc. Barbecue a charbon de bois
WO2005063096A1 (fr) 2003-12-30 2005-07-14 Woodflame Inc. Dispositif de cuisson isole du type barbecue

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4403541A (en) * 1979-05-29 1983-09-13 Ducane Heating Corporation Heat trapping cooking grill
WO1989011066A1 (fr) * 1988-05-10 1989-11-16 Hertford Pty. Ltd. Ameliorations apportees a des appareils de cuisson
US4936202A (en) * 1989-06-06 1990-06-26 Paul Lin Drip-pan apparatus of variable length and width
US5105725A (en) * 1989-02-15 1992-04-21 Haglund Allen C Barbecue grill and cooking grid element
US5355780A (en) * 1993-03-09 1994-10-18 Campbell Michael F Flame inhibiting grate for a cooking grill
US5647339A (en) * 1993-07-28 1997-07-15 Ezra; Shalom Grilling device

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4403541A (en) * 1979-05-29 1983-09-13 Ducane Heating Corporation Heat trapping cooking grill
WO1989011066A1 (fr) * 1988-05-10 1989-11-16 Hertford Pty. Ltd. Ameliorations apportees a des appareils de cuisson
US5105725A (en) * 1989-02-15 1992-04-21 Haglund Allen C Barbecue grill and cooking grid element
US4936202A (en) * 1989-06-06 1990-06-26 Paul Lin Drip-pan apparatus of variable length and width
US5355780A (en) * 1993-03-09 1994-10-18 Campbell Michael F Flame inhibiting grate for a cooking grill
US5647339A (en) * 1993-07-28 1997-07-15 Ezra; Shalom Grilling device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1108387A3 (fr) * 1999-12-16 2001-09-26 Snow Peak, Inc. Casier de brûleur
WO2004004527A1 (fr) * 2002-07-03 2004-01-15 Woodflame Inc. Barbecue a charbon de bois
WO2005063096A1 (fr) 2003-12-30 2005-07-14 Woodflame Inc. Dispositif de cuisson isole du type barbecue

Also Published As

Publication number Publication date
AU8846598A (en) 1999-03-01
CA2211495A1 (fr) 1999-02-08

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