Stoves and furnaces – Stoves – Cooking
Patent
1992-01-31
1994-02-08
Yeung, James C.
Stoves and furnaces
Stoves
Cooking
126 1D, 126 8, A47J 3700
Patent
active
052841251
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention relates to a multi-purpose fireplace, for outdoor use, having a firebox, a baking chamber and above the backing chamber at least one grill.
2. Description of Prior Art
A conventional multi-purpose fireplace for outdoor use is known from German Patent Disclosure DE-A1-3,618,651. This known multi-purpose fireplace is portable. The housing rests on support legs. The support legs are unsuitable for placing the multi-purpose fireplace on soft ground. A baking chamber, sheathed with fire-proof and heat-insulating material, in particular with firebrick, is positioned in the lower part of the housing. The baking chamber is simultaneously used as the hearth, at least for the baking chamber. Positioned above the baking chamber is a chimney, made of metal walls extending in the shape of a truncated pyramid, the interior of which is intended to receive a conventional grill, and a smoke chamber with an air exhaust. There is a closable opening between the baking chamber and the chimney and the closable opening connects the smoke chamber with the hearth positioned inside the baking chamber. For grilling, it is necessary to provide a fire grill with burning coals above the ceiling of the baking chamber. The hearth in the baking chamber is not sufficient for grilling. Two hearths are required with this multi-purpose fireplace in order to satisfy the conditions set by the different purposes of the fireplace. Prior to baking, the glowing coals must be removed from the baking chamber, which is a dangerous and unpleasant task. The baking chamber of this multi-purpose fireplace requires 1.5 to 2 hours to attain baking temperature. Prior to a repeat of the baking operation, the baking chamber must again be filled with fuel and heated. Furthermore, expensive hardwood, such as beechwood, is used for heating the baking chamber. During the warm-up time and during baking this multi-purpose fireplace cannot provide warmth for a possible seat. Also, the multi-purpose fireplace is comparatively expensive. Simultaneous baking and smoking is not provided. Continuous baking operation is not possible. Furthermore, two comparatively expensive fuels, such as hardwood and charcoal, must be used.
SUMMARY OF THE INVENTION
It is one object of this invention to develop a simple and cost-efficient multi-purpose fireplace, which permits simultaneous and continuous operation of all functions present, such as baking, cooking, roasting and grilling, and which also additionally can be used to warm a seat positioned in front of the fireplace.
This object is achieved with a baking chamber that is delimited by a metal wall with a door accessible from the outside and is fixed in an outer housing receiving the firebox, leaving open flue conduits between the metal wall and the housing directly above the hearth. The multi-purpose fireplace according to this invention has only a single hearth separated from the baking chamber, which can be fired without interruption. Because the baking chamber is not surrounded by heat-insulating material, but by a metal wall, the warm-up time is reduced to approximately 15 to 20 minutes for the ideal baking temperature, and the baking process can be repeated without interruption. The temperature in the baking chamber and also on the grilling, roasting and cooking level located above the baking chamber can be regulated with a smaller or larger fire or by opening or closing the baking chamber. Cost-efficient types of soft wood are suitable for heating, during baking, grilling, and roasting and while cooking, the fire can also warm a seat by way of the fireplace opening.
Advantageously, the outer housing comprises at least four interlocking sidewalls. The prefabricated sidewalls are advantageously fitted together in an interlocking manner. Making expensive connecting devices unnecessary. Two opposed sidewalls of the housing may be in the shape of a T and the two other opposed sidewalls in the shape of an inverted T, the two arms of the T each having a length
REFERENCES:
patent: 160542 (1875-03-01), Old
patent: 702999 (1902-06-01), Richards
patent: 733129 (1903-07-01), Berry
patent: 1100890 (1914-06-01), Jones
patent: 2350948 (1944-06-01), Walker
patent: 3548803 (1970-12-01), Vogel
patent: 3568590 (1971-03-01), Grice
patent: 4700618 (1987-10-01), Cox, Jr.
patent: 4829977 (1989-05-01), Valentine
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