WO2006080619A1

WO2006080619A1 - Rotary barbecue apparatus

Info

Publication number: WO2006080619A1
Application number: PCT/KR2005/003108
Authority: WO
Inventors: Tae Gyun Kwon
Original assignee: Tae Gyun Kwon
Priority date: 2004-09-25
Filing date: 2005-09-20
Publication date: 2006-08-03
Also published as: CN1933756A; CN100479723C; KR100500950B1

Abstract

A rotary barbecue apparatus is provided which comprises a furnace capable of receiving heat source therein; a rotational shaft installed freely rotatably and vertically at center of said furnace in such a manner that at least a portion of said rotational shaft protrudes beyond said furnace; a driving means for rotating said rotational shaft; a plurality of meat skewer bars for skewering and holding meat; a no. 1 rotation means mounted at a point of the rotational shaft protruding beyond said furnace, for rotating each of said plurality of meat skewer bars as it is and simultaneously rotating the same around said rotational shaft; and a no. 2 rotation means located beyond said no. 1 rotation means and operating in the same way as said no. 1 rotation means. By use of said rotary barbecue apparatus, a large amount of meat can be cooked uniformly at a time, cooking speed can be controlled according to necessity, and a large amount of meat can be cooked in a short time because it is possible to prevent outward loss of the furnace heat.

Description

ROTARY BARBECUE APPARATUS

Technical Field

The present invention relates generally to a rotary barbecue apparatus, and more particularly to a rotary-type barbecue cooking apparatus which can broil a large amount of meat uniformly at a time.

Background Art

A barbecue cooking apparatus is generally furnished with a heat source at its lower part while meat is placed and broiled on upper part thereof. Another type of a barbecue cooking apparatus which is furnished with a heat source at its side can also be used.

In said apparatuses however, inconvenience of a continual work of turning over the meat is needed to cook the meat uniformly. Moreover, the meat would be from time to time burnt up during cooking process.

Therefore, various forms of rotary-type barbecue cooking apparatuses are recently suggested and commercially used, whereby meat can be cooked uniformly without being burnt.

A rotary-type ocher charcoal barbecue device disclosed under Korean Utility Model No. 227462 suggests a configuration as illustrated in FIG. 1 : an ocher layer 2 is formed within the body 1 , a round rotational plate 5 is formed at each of both sides within the ocher layer 2, a no. 2 connection shaft 10 is formed along circumference of the rotational plate 5, a roast bin 3 is formed at the no. 2 connection shaft for keeping meat, a no. 2 chain 11 is furnished for connecting no. 2 connection shaft 10 with a no. 2 speed reducer 12, a no 1 connection shaft 6 is formed at center of the rotational plate 5, a no. 1 chain gear 7 is formed at one end of the no. 1 connection shaft 6, and a no. 1 chain 8 is furnished for connecting the no.1 chain gear 7 to a no 1 speed reducer 9. When no. 1 speed reducer 9 and no. 2 speed reducer 12 each rotates, the rotational plate 5 and the roast bins 3 each separately spins, and thereby it is possible to prevent that only a portion of the whole meat is excessively cooked by heat radiation from a furnace 4.

In said barbecue device however, since the roast bins 3 are installed at locations within the body 1 , replacing work of the roast bins 3 already heated hot causes a problem, and another inconvenience accompanies in taking out fully-done meat one by one from the roast bin 3.

In order to solve these problems, a barbecue device disclosed in Korean Patent Application No. 2004-25592 suggests, as illustrated in FIG. 2: two furnaces 21 & 22 are formed at upper part of the body 20, two lids 25 & 26 having transparent windows (not shown in drawing) are formed above the furnaces 21 & 22, and rotational holding spears 23 and grill 24 are placed on upper part of the furnaces 21 & 22 so that fully-broiled meat can be taken out easily.

In said barbecue device however, since the number of holding spears connected to fixing base (not shown in drawing) that rotates in exposure at inside of the furnace 21 is small, it has a drawback that a large amount of meat can not be roasted or broiled at a time.

Disclosure of Invention Technical Problem

The present invention was contrived to alleviate or solve problems and drawbacks mentioned as above. It is an object of the present invention therefore to provide a rotary barbecue apparatus for broiling a large amount of meat uniformly at a time, by installing rotation means in a plurality of steps above a furnace, by mounting a plurality of meat skewer bars at said rotation means, and by rotating these to a certain established direction.

In addition, it is another object of the present invention to provide a rotary barbecue apparatus that can control cooking speed as it is necessary according to heat strength applied from furnace on the meat, by installing rotation means in a plurality of steps above a furnace, and by mounting a plurality of meat skewer bars at said plural steps of rotation means. Moreover, it is further another object of the present invention to provide a rotary barbecue apparatus, whereby workers may cook in a safe and convenient way and take out fully-done meat or flesh outwards easily, by connecting meat skewer bars to rotation means in such a manner that they are easily attached and detached from outside of the furnace.

In addition, it is further another object of the present invention to provide a rotary barbecue apparatus for cooking a large amount of meat in a short time, by installing the upper part of furnace openably and closably, and by preventing outward loss of furnace heat generation. Moreover, it is further another object of the present invention to provide a rotary barbecue apparatus, whereby the meat may be cooked in a more comfortable and fresher atmosphere, by discharging out the smoke and smell that will be generated during cooking process.

Technical Solution

In order to achieve the objects described as above, a rotary barbecue apparatus according to the present invention comprises: a furnace consisting of structure of stacked refractory bricks and including one or more combustion chambers each formed with a space part which can receive a heat source therein, and one or more ash boxes for receiving ashes which fall from said combustion chambers, each of the ash boxes being located directly under the respective combustion chamber; a rotational shaft installed vertically and freely rotatably at center of said furnace in such a manner that at least a portion of said rotational shaft projects beyond the furnace; a driving means located at one side of said furnace, said driving means including a motor to generate driving force for rotating said rotational shaft by introduction of external electric power and an electromotive system for transferring said driving force of the motor to said rotational shaft; a plurality of meat skewer bars for skewering and holding meat or flesh; a no. 1 rotation means mounted at a point of the rotational shaft protruding upwardly from said furnace, with each of said plurality of meat skewer bars being connected attachably and detachably to said no. 1 rotation means, whereby said no. 1 rotation means can rotate each of said plurality of meat skewer bars as it is and simultaneously rotate the same around said rotational shaft when said rotational shaft rotates; and a no. 2 rotation means mounted at a point of the rotational shaft protruding upwardly from said no. 1 rotation means, with each of said plurality of meat skewer bars being connected attachably and detachably to said no. 2 rotation means, whereby said no. 2 rotation means can rotate each of said plurality of meat skewer bars as it is and simultaneously rotate the same around said rotational shaft when said rotational shaft rotates.

In addition, each of said no.1 rotation means and no. 2 rotation means preferably includes: a fixed plate fixedly installed irrelatively to rotation of said rotational shaft, said fixed plate being formed with a penetrating hole at its center so that said rotational shaft can be inserted to this penetrating hole, and also formed with teeth at its periphery along a circle of constant radius having center at said rotational shaft; a rotational plate installed rotatably as one body with said rotational shaft and separately from said fixed plate, said rotational plate being furnished at its periphery with a plurality of shaft supports with an interval toward said fixed plate; and a plurality of holders connected rotatably to said plurality of shaft supports furnished at said rotational plate.

Moreover, it is effective that each of said holders includes a shaft part protrusively formed to be connected to said shaft support; a teeth part of which circumferential plane is formed with teeth as extension of said shaft part so that said teeth might be engaged with the teeth formed at said fixed plate for rotational movement; and a hollow insertion part that is extended to said teeth part and opened at its end.

In addition, it is preferable that the standing poles installed around said furnace are further furnished with a roof having a chimney for discharging out the smoke and smell at upper part thereof and also furnished with windows installed openably/closably around the standing poles and beyond the furnace.

Moreover, said chimney is effective if it is furnished with a ventilator at its upper end and also furnished with a heat-loss prevention plate directly below it.

In addition, it is preferable to be further furnished with a no. 1 guide ring in a form of horizontal ring installed at the same level as said no. 1 rotation means around said furnace for holding and guiding a portion of meat skewer bar mounted at said no. 1 rotation means; and a no. 2 guide ring in a form of horizontal ring held by the standing poles installed around said furnace and installed at the same level as said no. 2 rotation means for holding and guiding a portion of each of said plurality of meat skewer bars mounted at said no. 2 rotation means.

In addition, it is preferable that said rotational shaft is connected with a no. 3 rotation means at a point of said rotational shaft projecting beyond said no. 2 rotation means, with said meat skewer bars being connected attachably and detachably to said no. 3 rotation means, whereby said no. 3 rotation means can rotate each of said plurality of meat skewer bars as it is and simultaneously rotate the same around said rotational shaft when said rotational shaft rotates.

Moreover, said rotational shaft is effective if it is connected to a no. 4 rotation means at a point of said rotational shaft projecting beyond said no. 3 rotation means, with each of said plurality of meat skewer bars being connected attachably and detachably to said no. 4 rotation means, whereby said no. 4 rotation means can rotate each of said plurality of meat skewer bars as it is and simultaneously rotate the same around said rotational shaft when said rotational shaft rotates. A no. 4 guide ring in a form of a horizontal ring is held at the standing poles installed around said furnace and installed at the same level as said no. 4 rotation means for holding and guiding a portion of the meat skewer bars mounted at said no. 4 rotation means. In addition, it is preferable that said rotational shaft is connected to a no. 5 rotation means at a point of said rotational shaft projecting beyond said no. 4 rotation means, with said meat skewer bars being connected attachably and detachably to said no. 5 rotation means, whereby said no. 5 rotation means can rotate each of said plurality of meat skewer bars as it is and simultaneously rotate the same around said rotational shaft when said rotational shaft rotates. A no. 5 guide ring in a form of a horizontal ring is held at the standing poles installed around said furnace and installed at the same level as said no. 5 rotation means for holding and guiding a portion of the meat skewer bars mounted at said no. 5 rotation means.

Advantageous Effect

The rotary barbecue apparatus of the present invention has an advantageous effect of cooking and broiling a large amount of meat uniformly at a time, by installing rotation means in a plurality of steps at a point of rotational shaft projecting beyond furnace, by mounting a plurality of meat skewer bars at said rotation means, and by rotating each of said plurality of meat skewer bars as it is and simultaneously rotating the same around said rotational shaft when said rotational shaft rotates. Moreover, it has an effect of controllability on cooking speed according to heat strength applied from furnace onto meat, by installing rotation means in a plurality of steps above the furnace, and by mounting a plurality of meat skewer bars at each of said plural steps of rotation means step by step according to cooked degree of the meat skewered at each of said plurality of meat skewer bars.

In addition, it has an effect of increased safety and convenience for workers in cooking operation and easiness in taking out the fully-done meat because said meat skewer bars are connected attachably and detachably to said rotation means. Moreover, it has an effect to ensure a more pleasant environment of cooking, by installation of a roof furnished with a chimney at upper part of the barbecue apparatus for discharging out the smoke and smell produced during cooking process by furnace heat generation.

In addition, it has an advantageous effect of cooking and broiling a large amount of meat more in a shorter time, by installing windows openably and closably along the periphery of said furnace and heat-loss prevention plate directly below said chimney to prevent external loss of furnace heat production.

Brief Description of the Drawings FIG. 1 is a cross-sectional view illustrating an example of rotary barbecue apparatus according to a prior art;

FIG. 2 is a perspective view illustrating another example of rotary barbecue apparatus according to a prior art;

FIG. 3 is an overall perspective view of a rotary barbecue apparatus according to no. 1 embodiment of the present invention;

FIG. 4 is a cross-sectional view of a rotary barbecue apparatus according to no. 1 embodiment of the present invention;

FIG. 5 is a cross-sectional view of a rotary barbecue apparatus in FIG. 3 further installed with a heat-loss prevention plate; FIG. 6 is a schematic perspective view selectively showing main rotational driving parts of a rotary barbecue apparatus in FIG. 3;

FIG. 7 is an enlarged cross-sectional view showing a portion of main rotational driving parts in FIG. 6;

FIG. 8 is an overall cross-sectional view of a rotary barbecue apparatus according to no. 2 embodiment of the present invention;

FIG. 9 is a schematic perspective view selectively showing main rotational driving parts of a rotary barbecue apparatus in FIG. 8;

FIG. 10 is an enlarged cross-sectional view showing a portion of main rotational driving parts in FIG. 9; FIG. 11 is a top view illustrating rotational driving parts and furnace in a rotary barbecue apparatus of FIG. 8; and FIG. 12 is an overall cross-sectional view illustrating a five-step rotary barbecue apparatus according to no. 3 embodiment of the present invention.

Best Mode for Carrying Out the Invention Hereinafter, a rotary barbecue apparatus according to preferred embodiment of the present invention will be described in detail with reference to appended drawings.

FIGS. 3 to 12 each describes configuration of a rotary barbecue apparatus according to preferred embodiment of the present invention. FIGS. 3 to 7 are drawings illustrating two-step rotary barbecue apparatus according to no. 1 preferred embodiment of the present invention.

A two-step rotary barbecue apparatus according to no. 1 preferred embodiment of the present invention comprises, as illustrated in FIG. 3 or in FIG. 4: a furnace 30 capable of receiving a heat source therein; a rotational shaft 70 installed vertically and freely rotatably at center of said furnace 30 in such a manner that at least a portion of the rotational shaft 70 projects beyond the furnace 30; a driving means 72 for rotating said rotational shaft 70; meat skewer bars 80 for skewering and holding meat or flesh; a no. 1 rotation means 84 mounted at a point of the rotational shaft 70 projecting beyond the furnace 30, for rotating each of said plurality of meat skewer bars 80 at its own place and simultaneously rotating the same around said rotational shaft 70; and a no. 2 rotation means 90 located above the no. 1 rotation means 84 and operating in the same manner as the no. 1 rotation means 84. The furnace 30, referring to FIG. 3, consists of structure of stacked refractory bricks, and includes one or more combustion chambers 31 each formed with space part capable of receiving a heat source therein, and one or more ash boxes 32 each located directly under the respective combustion chamber 31 for receiving ashes which fall from said combustion chambers 31. At lower plane of each of said combustion chamber 31, as illustrated in FIG. 3, a plurality of penetrating holes are formed penetratingly toward respective said ash box 32. Ashes fall down through these penetrating holes to be heaped up in said ash box 32. An air introduction tube 31a is installed at one side in each of said combustion chamber 31 to supply fresh air in connection to external atmosphere.

Referring to FIG. 3 or FIG.4, said rotational shaft 70 is center shaft of the rotary barbecue apparatus. It is installed vertically and freely rotatably at center of said furnace 30 in such a manner that at least a portion thereof projects beyond the furnace 30.

In addition, a cylindrical tube 71 having radius larger than that of said rotational shaft 70 is inserted surrounding the portion of said rotational shaft 70 corresponding to the portion installed within said furnace 30 in order to support upper part of said rotational shaft 70. Said driving means 72 transfers driving force for rotating said rotational shaft 70. As illustrated in FIG. 6, it is furnished at one side of said furnace 30 and comprises a motor 73 to generate driving force by introduction of external electricity to rotate said rotational shaft 70, and an electromotive system 74 for transferring driving force of said motor 73 to said rotational shaft 70.

Referring again to FIG. 6, the motor 73 generates driving force by introduction of external electricity, a driving sprocket wheel 74a is connected thereto and rotates, the rotating force of driving sprocket wheel 74a is transferred to a driven sprocket wheel 74b by a chain 74c, this rotating force of driven sprocket wheel 74b is transferred to a worm 74d by a chain 74c, this worm 74d connected by teeth to a worm wheel 74e transfers rotating force to the worm wheel 74e, and this worm wheel 74e connected as one body to one end of said rotational shaft 70 can thereby rotate said rotational shaft 70. At this time, it is apparent in said electromotive system that a driving pulley instead of a driving sprocket wheel 74a, a driven pulley instead of a driven sprocket wheel 74b, and a pulley instead of a chain 74c can be used, and other further electromotive systems can also be used.

Said meat skewer bars 80 are used for skewering and holding meat or flesh. Each of them comprises, as illustrated in FIG. 6, a holding spear 81 for skewering meat, a rotational body 82 inserted rotatably to said holding spear 81 , and a knob 83 of heat-resistant material connected to end part.

In order to cook meat in said apparatus, each of attachable/detachable tubes installed with a plurality of skewers to outward direction is inserted to each of said holding spears 81 , and then prepared meat is skewered at each of said plurality of skewers. When large lumps of meat are to be cooked and broiled, the lump meat can be directly skewered as it is at said holding spear 81.

As illustrated in FIG. 6 or in FIG. 7, said no. 1 rotation means 84 is mounted at one point of the rotational shaft 70 projecting beyond the furnace 30, for rotating each of said plurality of meat skewer bars 80 as it is and simultaneously rotating the same around said rotational shaft 70 when said rotational shaft 70 rotates. Said meat skewer bars 80 can be connected attachably and detachably thereto.

As illustrated again in FIG. 6 or in FIG. 7, said no. 1 rotation means 84 is formed with a penetrating hole at its center, whereby said rotational shaft 70 is inserted to said penetrating hole. Said no. 1 rotation means 84 includes a no. 1 fixed plate 85 installed firmly irrelatively to rotation of said rotational shaft 70 and formed with teeth at its periphery along a circle of constant radius having center at said rotational shaft 70; a no 1 rotational plate 86 installed rotatably as one body with said rotational shaft 70 and separately from said no. 1 fixed plate 85, and furnished at its periphery with a plurality of shaft supports 87 with an interval toward said no 1 fixed plate 85; and a plurality of no. 1 holders 89 connected rotatably to said plurality of shaft supports 87 furnished at said no. 1 rotational plate 86. At this time, the no. 1 fixed plate 85 of no. 1 rotation means 84 may be jointed on a supporting plate 62 fixedly installed above the furnace 30 as illustrated in FIG. 7, the center of said supporting plate 62 being formed with a penetrating hole, or may be fixedly installed at a standing poles 60 that will be described later by additional fixing means 77 & 78.

Said fixing means 77 & 78, as illustrated in FIG. 6 or in FIG. 7, consist of fixing piece 77 attached at circumferential plane of no. 1 fixed plate and connection member 78 such as rope and the like connected to said fixing piece 77 to fix at standing poles 60 that will be described later.

In addition, at periphery of said no. 1 rotational plate 86, as illustrated in FIG. 6 or in FIG. 7,a plurality of shaft supports 87 are jointed with an interval by joint means such as bolt 88 and the like.

Moreover, said no. 1 holder 89, as illustrated in FIG. 6 or in FIG. 7, includes a shaft part 89a protrusively formed for connecting to said shaft support 87, a teeth part 89b as extension of said shaft part 89a, the circumferential plane of said teeth part 89b being formed with teeth to be engaged with the teeth formed at said no. 1 fixed plate for rotational movement, and a hollow insertion part 89c extended to said teeth part 89b and opened at its end.

At this time, as illustrated in FIG. 7, the circumferential plane of insertion part 89c of said no. 1 holder 89 is formed with a penetrating hole. A joint means such as a bolt 89d and the like is jointed at this penetrating hole for functioning as a stopper to prevent wavering of the holding spear 81 when one end of holding spear 81 of said meat skewer bar 80 is inserted into said insertion part 89c.

Said no. 2 rotation means 90, as illustrated in FIG. 6 or in FIG. 7, is mounted at one point of rotational shaft 70 projecting beyond said no. 1 rotation means 84 and works in the same way as said no. 1 rotation means 84.

Said no. 2 rotation means 90, as illustrated in FIG. 6 or in FIG. 7, includes a no. 2 fixed plate 90a which is fixedly installed irrelatively to rotation of said rotational shaft 70, said no. 2 fixed plate 90a being formed with a penetrating hole at its center so that said rotational shaft 70 can be inserted into this penetrating hole, and also formed with teeth at its periphery along a circle of constant radius having center at said rotational shaft 70; a no 2 rotational plate 90b installed rotatably as one body with said rotational shaft 70 and separately from said no. 2 fixed plate 90a, said no 2 rotational plate 90b being furnished at its periphery with a plurality of shaft supports 87 with an interval toward said no 2 fixed plate 90a; and a plurality of no. 2 holders 90c connected rotatably to said plurality of shaft supports 87 furnished at said no. 2 rotational plate 90b.

The no. 2 fixed plate 90a of said no. 2 rotation means 90 is installed fixedly by an additional fixing means 77 & 78 at standing poles 60 that will be described later.

Said fixing means 77 & 78, as illustrated in FIG. 6 or in FIG. 7, consist of fixing piece 77 mounted at circumferential plane of said no. 2 fixed plate 90a and connection member 78 such as rope and the like connected to said fixing piece 77 for fixing at standing poles 60 that will be described later.

In addition, at periphery of said no. 2 rotational plate 90b, as illustrated in FIG. 6 or in FIG. 7, a plurality of shaft supports 87 are jointed with an interval by joint means such as bolt 88 and the like.

Moreover, said no. 2 holder 90c, as illustrated in FIG. 6 or in FIG. 7, consists of a shaft part, a teeth part, and an insertion part as in the case of said no. 1 holder 89.

In addition, the two-step rotary barbecue apparatus according to no. 1 preferred embodiment of the present invention may further comprise: as illustrated in FIGS. 3 to 7, a no. 1 guide ring 91 and no. 2 guide ring 92 each installed as a form of horizontal ring at the same level as said no. 1 rotation means 84 and no. 2 rotation means 90 respectively around said furnace 30 for holding and guiding a portion of meat skewer bar 80 mounted at said no. 1 rotation means 84 and no. 2 rotation means 90.

Said no. 1 guide ring 91 , as illustrated in FIG. 3 or in FIG. 4, may be fixed in a form of horizontal ring being fixed around the furnace 30 at position above the furnace and at the same level as said no. 1 rotation means 84, or may be fixed in a form of horizontal ring held by the standing poles installed around said furnace 30, and it holds and guides a portion of said meat skewer bar 80 combined to no. 1 holder 89 of said no. 1 rotation means 84. Said no. 2 guide ring 92 is installed in a form of horizontal ring held by the standing poles installed around said furnace 30 and installed at the same level as said no. 2 rotation means 90, and it holds and guides a portion of said meat skewer bar 80 mounted at said no. 2 rotation means 90.

At this time, each of said no. 1 guide ring 91 and no. 2 guide ring 92 is furnished with a catch sill to outward direction thereof to protect said meat skewer bar 80 from breaking away and to guide said meat skewer bar 80 far more stably.

By the way, as illustrated in FIG. 3 or in FIG. 4, at upper part above the standing poles 60, a roof 40 furnished with a chimney 41 is further installed for discharging out the smoke and smell generated during broiling process. And moreover, windows 50 are installed openably/closably at places around the standing poles 60 and beyond the furnace 30 to keep the heat produced from furnace 30 for a longer time.

At this time, as illustrated in FIG. 5, within said chimney 41 , a ventilator 41a is furnished at upper end for discharging out the smoke and smell more effectively. Directly below the chimney 41 , a heat-loss prevention plate 42 is furnished to prevent the produced heat of the furnace from directly passing out to the chimney 41 and to minimize thereby external heat loss.

Operation of the two-step rotary barbecue apparatus according to no. 1 preferred embodiment of the present invention consisting of above configuration will be described as follows.

At first, lumps of meat cut to a proper size and seasoned are skewered to be ready for cooking at a plurality of skewers installed to outward direction of a tube inserted attachably and detachably to the holding spear 81 of each of said meat skewer bar 80. The shaft part 89a of no. 1 holder 89 is inserted into the shaft supports 87 installed with an interval along periphery of the no. 1 rotational plate 68; the end of holding spear 81 of each meat skewer bar 80 already skewered with meat lumps to be cooked is inserted into the insertion part 89c of said holder 89; and bolt 89d is tightened to fix. Then, as illustrated in FIG. 3, the rotation body 82 rotatably combined to the holding spear 81 of said meat skewer bar 80 is contacted to the no. 1 guide ring 91 , and the knob part 83 of said meat skewer bar 80 is laid on the catch sill formed to outward direction of no. 1 guide ring 91. Moreover, same method of preparation for cooking is repeated on behalf of the no. 2 rotation means 90. Thereafter under the conditions prepared as above, fire is set in the combustion chamber 31 of the furnace 30, and thereby meat lumps positioned beyond the furnace 30 are heated.

At this time, the motor 73 by introduction of external electricity generates driving force, as illustrated in FIG.6, the driving force produced from said motor 73 is transferred to the driving sprocket wheel 74a that is combined to said motor 73 to rotate said driving sprocket wheel 74a to one direction, accordingly the driven sprocket wheel 74b combined to said driving sprocket wheel 74a by a chain 74c also rotates, the driving force transferred to said driven sprocket wheel 74b is transferred to the worm 74d combined to said driven sprocket wheel 74b by a chain 74c and rotates the worm wheel 74e that is teeth-connected to said worm 74d.

Accordingly, the rotational shaft 70 fixedly connected at center of worm wheel 74e rotates, and the no. 1 rotational plate 86 and no. 2 rotational plate 90b each fixedly connected at one point of said rotational shaft 70 also rotates as one body of said rotational shaft 70.

On the other hand, as illustrated in FIG. 6 or in FIG. 7, the teeth part 89b of no. 1 holder 89 shaft-connected to shaft supports 87 of no. 1 rotational plate 86 is engaged with the teeth formed along periphery of no. 1 fixed plate 85 that is fixedly installed by insertion at one point of said

,-_Λ+_Λ4.;_Λ^_n l «u «α -7/-1 „ -_: — _ x:« — i . . i r o /-> -i-ι_ rotational plate 86 rotates, said no. 1 holder 89 rotates as it is and around said rotational shaft 70 in accordance with the rotating direction of said rotational shaft 70.

In addition, as illustrated in FIG. 6 or in FIG. 7, the teeth part of holder 90c shaft-connected to shaft supports of no. 2 rotational plate 90b is engaged with the teeth formed along periphery of no. 2 fixed plate 90a that is fixedly installed by a connection member 78 such as rope and the like to said standing poles 60 and is inserted at one point of said rotational shaft 70 projecting beyond said no. 1 rotation means 84. As said no. 2 rotational plate 90b rotates, said no. 2 holder 90c rotates as it is and around said rotational shaft 70 in accordance with the rotating direction of said rotational shaft 70.

In this way, while the meat skewer bars 80 combined to said holders 89 & 90c with meat lumps being skewered thereon rotate around said rotational shaft 70 as one body with said holders 89 & 90c, said meat lumps can be uniformly cooked and broiled.

By the way, as illustrated in FIG. 3 or in FIG. 4, a roof 40 is installed at upper part of this barbecue apparatus and windows 50 are installed around the fumace30 for keeping the heat produced from the furnace 30 therein for a longer time. Said roof 40 is furnished with a chimney 41 installed with a ventilator 41a therein for discharging out the smoke and smell produced during cooking of said meat lumps.

In addition, directly below the chimney 41 , as illustrated in FIG. 5, a heat-loss prevention plate 42 is furnished to prevent the produced heat of said furnace 30 from discharging out directly through the chimney 41 and to minimize thereby external heat loss.

On the other hand, FIGS. 8 to 11 are drawings illustrating a three- step rotary barbecue apparatus according to no. 2 preferred embodiment of the present invention.

As illustrated in FIGS. 8 to 10, the three-step rotary barbecue apparatus according to no. 2 preferred embodiment of the present invention further comprises, in addition to said two-step rotary barbecue apparatus, a no. 3 rotation means 96 mounted at one point of the rotational shaft 70 projecting beyond said no. 2 rotation means 90, with said meat skewer bars 80 being connected attachably and detachably to said no. 3 rotation means 96, whereby said no. 3 rotation means 96 can rotate each of said plurality of meat skewer bars 80 as it is and simultaneously rotate the same around said rotational shaft 70 when said rotational shaft 70 rotates. The three-step rotary barbecue apparatus according to no. 2 preferred embodiment of the present invention works in the same way as said two-step rotary barbecue apparatus. At this time, no. 3 fixed plate 96a of said no.3 rotation means 96 is fixedly installed at the standing poles 60 by additional fixing means 77 & 78 as one body with no. 2 fixed plate 90a as illustrated in FIG. 10.

Said fixing means 77 & 78 consist of a fixing piece 77 attached as one body at circumferential plane of said no. 2 fixed plate and no. 3 fixed plate, and a connection member 78 such as rope and the like connected to said fixing piece 77 to fix at standing poles 60.

In addition, the three-step rotary barbecue apparatus according to no. 2 embodiment of the present invention may preferably further comprise a no. 3 guide ring 93 installed as a form of horizontal ring at the same level as said no. 3 rotation means 96, said no. 3 guide ring 93 being held by standing poles 60 installed around said furnace 30. This no. 3 guide ring 93 can hold and guide stably a portion of meat skewer bar 80 mounted at said no. 3 rotation means 96.

On the other hand, FIG. 11 is a top view showing rotational driving parts and furnace 30 of the rotary barbecue apparatus in FIG. 8.

Referring to FIG. 11 , the rotational shaft 70 is furnished at center of said furnace 30. Around this rotational shaft 70, a plurality of no. 3 holders 96c are mounted at no. 3 rotational plate 96b. In every direction of said no. 3 holders 96c, a plurality of combustion chambers 31 are furnished radially one by one within said furnace 30 by partition of refractory bricks. An air introduction tube 31a connected to surroundings is installed in each of said combustion chambers 31 for supplying external fresh air into combustion chamber 31.

Similarly to said three-step rotary barbecue apparatus, the four-step rotary barbecue apparatus according to no. 3 embodiment of the present invention further comprises, in addition to the three-step rotary barbecue apparatus illustrated in FIG. 8: a no. 4 rotation means 97 mounted as illustrated in FIG. 12 at one point of the rotational shaft 70 projecting beyond said no. 3 rotation means 96, with said meat skewer bars 80 being connected attachably and detachably to said no. 4 rotation means 97, whereby said no. 4 rotation means 97 can rotate each of said plurality of meat skewer bars 80 as it is and simultaneously rotate the same around said rotational shaft 70 when said rotational shaft 70 rotates; and a no. 4 guide ring 94 installed in a form of horizontal ring at the same level with said no. 4 rotation means 97 and held by standing poles 60 installed around said furnace 30 for holding and guiding a portion of meat skewer bars 80 mounted at said no. 4 rotation means 97. The four-step rotary barbecue apparatus according to no. 3 embodiment of the present invention operates in the same way as in said two-step or three-step rotary barbecue apparatus.

By the way, FIG. 12 is a cross sectional view illustrating a five-step rotary barbecue apparatus according to no. 4 preferred embodiment of the present invention as a whole.

The five-step rotary barbecue apparatus according to no. 4 embodiment of the present invention as illustrated in FIG. 12 further comprises: a no. 5 rotation means 98 mounted at one point of the rotational shaft 70 projecting beyond said no. 4 rotation means 97, with said meat skewer bars 80 being connected attachably and detachably to said no. 5 rotation means 98, whereby said no. 5 rotation means 98 can rotate each of said plurality of meat skewer bars 80 as it is and simultaneously rotate the same around said rotational shaft 70 when said rotational shaft 70 rotates; and a no. 5 guide ring 95 installed in a form of horizontal ring at the same level with said no.5 rotation means 98 and held by standing poles 60 installed around said furnace 30 for holding and guiding a portion of meat skewer bars 80 mounted at said no. 5 rotation means 98. The five-step rotary barbecue apparatus according to no. 4 embodiment of the present invention works in the same way with said two-step, three-step or four-step rotary barbecue apparatus.

While the present invention has been described herein with reference to the preferred embodiments thereof illustrated as appended drawings, it will be apparent to those skilled in the art that various modifications, variations and equivalent embodiments or examples can be made therein without departing from the spirit and scope of the invention. Therefore, it is intended that the present invention covers the modifications, variations and equivalent embodiments or examples of this invention that come within the scope of the appended claims and their equivalents.

Industrial Applicability

The rotary barbecue apparatus of the present invention has an advantageous effect of cooking and broiling a large amount of meat uniformly at a time by installing rotation means in a plurality of steps at points of rotational shaft 70 projecting beyond furnace 30, by mounting a plurality of meat skewer bars 80 at said rotation means, and by rotating each of said plurality of meat skewer bars 80 as it is and simultaneously rotating the same around said rotational shaft 70 when said rotational shaft 70 rotates.

Claims

WHAT IS CLAIMED IS:

1. A rotary barbecue apparatus comprising: a furnace consisting of stacked structure of refractory bricks and including one or more combustion chambers and one or more ash boxes, each of said combustion chambers being formed with a space part capable of receiving a heat source therein, and each of said ash boxes being furnished directly under each of said combustion chambers for receiving ashes that fall down from each of said combustion chambers; a rotational shaft installed vertically and freely rotatably at center of said furnace in such a manner that at least a portion of the rotational shaft protrudes beyond said furnace; a driving means furnished at one side of said furnace, said driving means including a motor that generates driving force for rotating said rotational shaft by introduction of external electricity and an electromotive system that transfers said driving force of motor to said rotational shaft; a plurality of meat skewer bars for skewering and holding meat; a no. 1 rotation means mounted at a point of the rotational shaft protruding beyond said furnace, with said meat skewer bars being connected attachably and detachably to said no. 1 rotation means, whereby said no. 1 rotation means can rotate each of said plurality of meat skewer bars as it is and simultaneously rotate the same around said rotational shaft when said rotational shaft rotates; and a no. 2 rotation means mounted at a point of the rotational shaft protruding beyond said no. 1 rotation means, with said meat skewer bars being connected attachably and detachably to said no. 2 rotation means, whereby said no. 2 rotation means can rotate each of said plurality of meat skewer bars as it is and simultaneously rotate the same around said rotational shaft when said rotational shaft rotates. 2. The rotary barbecue apparatus according to claim 1 , wherein each of said no.1 rotation means and no.

2 rotation means includes: a fixed plate fixedly installed irrelatively to rotation of said rotational shaft, said fixed plate being formed at its central part with a penetrating hole so that said rotational shaft can be inserted into this penetrating hole, and also formed at its periphery with teeth along a circle of constant radius having center at said rotational shaft; a rotational plate installed rotatably as one body with said rotational shaft and separately from said fixed plate, said rotational plate being furnished at its periphery with a plurality of shaft supports with an interval toward said fixed plate; and a plurality of holders connected rotatably to said plurality of shaft supports furnished at said rotational plate.

3. The rotary barbecue apparatus according to claim 2, wherein each of said plurality of holders includes: a shaft part formed protrusively to be connected to said shaft support; a teeth part extended to said shaft part, said teeth part being formed at its circumferential plane with teeth in such a manner that said teeth part can be engaged with the teeth formed at said fixed plate for rotational movement; and a hollow insertion part extended to said teeth part and opened at end.

4. The rotary barbecue apparatus according to claim 1 , wherein the standing poles installed around said furnace are further furnished with a roof installed beyond said standing poles and having a chimney for discharging out smoke and smell, and also furnished with openable/closable windows installed beyond said furnace and around said standing poles.

5. The rotary barbecue apparatus according to claim 4, wherein said chimney is furnished with a ventilator at its upper end, and also furnished with a heat-loss prevention plate installed directly under said chimney.

6. The rotary barbecue apparatus according to one of claims 1 to 5, further comprising: a no. 1 guide ring in a form of horizontal ring installed around said furnace and at the same level as said no. 1 rotation means, for holding and guiding a portion of each of said plurality of meat skewer bars mounted at said no. 1 rotation means; and a no. 2 guide ring in a form of horizontal ring held by the standing poles installed around said furnace and installed at the same level as said no. 2 rotation means, for holding and guiding a portion of each of said plurality of meat skewer bars mounted at said no. 2 rotation means.

7. The rotary barbecue apparatus according to claim 1 , wherein said rotational shaft is connected with a no. 3 rotation means at a point of said rotational shaft protruding beyond said no. 2 rotation means, with said plurality of meat skewer bars being connected attachably and detachably to said no. 3 rotation means, whereby said no. 3 rotation means can rotate each of said plurality of meat skewer bars as it is and simultaneously rotate the same around said rotational shaft when said rotational shaft rotates.

8. The rotary barbecue apparatus according to claim 7, further comprising: a no. 1 guide ring in a form of horizontal ring installed around said furnace and at the same level as said no. 1 rotation means, for holding and guiding a portion of each of said plurality of meat skewer bars mounted at said no. 1 rotation means; a no. 2 guide ring in a form of horizontal ring held by the standing poles installed around said furnace and installed at the same level as said no. 2 rotation means, for holding and guiding a portion of each of said plurality of meat skewer bars mounted at said no. 2 rotation means; and a no. 3 guide ring in a form of horizontal ring held by the standing poles installed around said furnace and installed at the same level as said no. 3 rotation means, for holding and guiding a portion of each of said plurality of meat skewer bars mounted at said no. 3 rotation means.

9. The rotary barbecue apparatus according to claim 7 or 8, wherein said rotational shaft is connected with a no. 4 rotation means at a point of said rotational shaft protruding beyond said no. 3 rotation means, with said plurality of meat skewer bars being connected attachably and detachably to said no. 4 rotation means, whereby said no. 4 rotation means can rotate each of said plurality of meat skewer bars as it is and simultaneously rotate the same around said rotational shaft when said rotational shaft rotates, and wherein said standing poles installed around said furnace holds and supports a no. 4 guide ring in a form of horizontal ring installed at the same level as said no. 4 rotation means, for holding and guiding a portion of each of said plurality of meat skewer bars mounted at said no. 4 rotation means.

10. The rotary barbecue apparatus according to claimθ, wherein said rotational shaft is connected with a no. 5 rotation means at a point of said rotational shaft protruding beyond said no. 4 rotation means, with said plurality of meat skewer bars being connected attachably and detachably to said no. 5 rotation means, whereby said no. 5 rotation means can rotate each of said plurality of meat skewer bars as it is and simultaneously rotate the same around said rotational shaft when said rotational shaft rotates, and wherein said standing poles installed around said furnace holds and supports a no. 5 guide ring in a form of horizontal ring installed at the same level as said no. 5 rotation means, for holding and guiding a portion of each of said plurality of meat skewer bars mounted at said no. 5 rotation means.