WO2008066323A1

WO2008066323A1 - Roaster

Info

Publication number: WO2008066323A1
Application number: PCT/KR2007/006061
Authority: WO
Inventors: Seong Gon Na
Original assignee: Seong Gon Na
Priority date: 2006-11-29
Filing date: 2007-11-28
Publication date: 2008-06-05
Also published as: KR100748382B1

Abstract

The present invention relates to a roaster, which includes a main body in a certain shape having an insulating wall element at an outer surface for keeping warmth, a ceramic case formed of far infrared ceramic materials and heat-resistant materials in a certain shape and mounted in the main body with an opening/closing door integrating roasting dies to move in association with rails, a combustion die coupled with a top part of the ceramic case, and a fuel case mounted at an upper part of the combustion die and covered by a sealing lid, so that heat generated by combustion advances downward to heat an outer surface of the ceramic case. According to the present invention, heat and ashes move downward by driving a fan motor so that waste heat is discharged via a smoke pipe and ashes are discharged via an ash discharge hole. An internal temperature of the ceramic case is kept at an optimum temperature for roasting food by controlling an rpm of the fan motor. The roasting plate is preheated in preheating chambers for keeping the roasted food at the optimum temperature during serving thereof after the food is roasted through clean, convenient, safe and energy-saving circumstances of the roaster.

Description

Description ROASTER

Technical Field

[1] The present invention relates to a roaster, in which a ceramic case in a certain shape is mounted inside for roasting food by heat and far infrared ray applied in every direction of 360°, and a roasting die is integrated into an opening/closing door of the ceramic case to be operated in connection with rails for the sanitation, safety and convenience, wherein the food is roasted in a minimum time for the taste and flavor of the food itself and the smoke generated by the roasting of the food is discharged to the outside of the ceramic case for preventing pollution of the inside of the ceramic case or the food to be roasted by the smoke or soot so that a large amount of food may be cooked in a short time. Background Art

[2] In general, in order to roasting food by using a prior art roaster, people have to approach fire to roast the food. In this case, the people heat a side of the food first and turn aside the food to heat the other side, which is a complicated and inconvenient time-consuming work. Further, smoke and dirt are generated during roasting the food, which pollutes the food and the indoor environment and generates bad smell.

[3] Further, in the prior art roaster, a door of a ceramic case for the roasting and the ceramic case may be damaged by the shock generated in the process of opening or closing and ceramic particles may be deviated by the shock and pollutes the food. Also, danger of fire or burn follows since the people have to approach to cook the food even in order to insert or withdraw the food. The injection of solid fuel is another reason of the danger and inconvenience since a proper injection amount of the solid fuel is difficult to control and fire or dirt may be leaked during the opening or closing of a fuel case door. Therefore, the combustion of the solid fuel becomes incomplete and irregular so that over-burning or incomplete burning of the solid fuel may be generated together with the danger of burning, air pollution and the waste of energy.

[4]

Disclosure of Invention

Technical Problem

[5] The prior art roaster has further disadvantages that the temperature control is not easy so that the food cannot be roasted at an optimum temperature and that the smoke generated by the roasting is not discharged smoothly but staying in the ceramic case or sticking to the food. Therefore, both the roaster and the food cannot be kept clean and in the high quality states. In addition, the roasted food is apt to be cooled, deteriorating the taste thereof.

[6] The prior art roaster has further disadvantages that the fuel injection has to be carried out several times a day, causing the safety problems, the air pollution and the waste of the manpower, and that the dirt are accumulated to a top part outside the ceramic case, disturbing the smooth heat transfer into the ceramic case. Therefore, the prior art has to be cleaned frequently but the disassembling or cleaning of the prior art roaster are difficult.

[7] Referring to Korean Utility Model Laying-Open Publication No. 1978-0004973, a fuel case is made of metal materials and downward combustion is concentrated generated at a lower part of the metal fuel case, so that a combustion part in the lower part is exposed to the heat of high temperature and corroded in a very short time, as shown in Fig. 12.

[8] Therefore, a fuel case itself has to be exchanged with a new one on the whole and this is a time, source, and manpower-consuming work.

[9] Further, people usually knock an outer surface of the fuel case to apply physical impact thereto, so that the fuel case is easily damaged, when supplied fuel is not smoothly moves in the fuel case during the combustion.

[10] Furthermore, the fuel case is sealed so that it is difficult to recognize a remaining amount of the fuel and calculate a proper fuel supply time. Technical Solution

[11] Therefore, the present invention is derived to resolve the above and any other disadvantages of the prior art, and an object of the invention is to provide a roaster in a certain shape which includes insulating wall elements at an outside part for keeping warmth and a ceramic case formed in a certain shape with far infrared ceramic materials, heat-resistant ceramic materials or any other heat-resistant materials overlapped by twice or more at an inside part. The ceramic case is fixed at a predetermined position and applied with heat at an outer surface, so that an internal temperature of the ceramic case reaches an available temperature for cooking. Then, a roasting die is withdrawn by a handle of an opening/closing door of the ceramic case and inserted into the ceramic case again by closing the opening/closing door after laying food thereon, so that the food is heated by internal heat of the ceramic case and far infrared rays in 360° and roasted under the optimum conditions in a short time. Therefore, the natural taste and flavor of the food may be revealed.

[12] In order to achieve the above object, according to the present invention, there is provided a roaster which includes a main body in a certain shape having an insulating wall element at an outer surface for keeping warmth, a ceramic case formed in a certain shape and mounted in the main body, a combustion die and a cap-shaped element having a certain inclination respectively coupled with a top part of the ceramic case, and a fuel case mounted on the cap-shaped element and covered by a sealing lid.

[13] The ceramic case fixed at a certain position in the main body is provided with preheating space parts at right and left sides thereof for preheating roasting dies, wherein the roasting dies are integrated into an opening/closing door and the opening/ closing door is coupled with reciprocation rails. A fan motor is mounted for introducing or discharging combustion air, wherein the fan motor is controllable in the rpm thereof. An ash discharging element is mounted to the ceramic case.

[14] In more detail, the roasting dies are integrated into the opening/closing door of the ceramic case for convenient insertion or withdrawal of the roasting dies during roasting food. The reciprocation rails are mounted to the ceramic case together with rail guides for preventing shock of the roasting dies and the opening/closing door and keeping safety thereof during the reciprocation motion for the insertion or withdrawal of the food. Further, The cap-shaped element is mounted in the combustion die for uniform supply of solid fuel and smooth downward advancing of the solid fuel during the supply and combustion of the solid fuel, wherein the solid fuel is injected into a fuel case. The cap-shaped element is formed with a tap at a top part and a tap holder is connected to the tap for improving the movement of the solid fuel, wherein the movement of the solid fuel may be improved by rotating the tap holder right and left. The fan motor is controllable in the rpm thereof for the complete and uniform combustion of the solid fuel. The ceramic case is formed with a smoke discharging hole of a certain size at a certain position, so that the smoke generated in the process of roasting food may be discharged via the smoke discharging hole. The discharged smoke undergoes the complete combustion procedure along with the flow of heat outside the ceramic case. Preheating chamber are defined by a barrier wall at the right and left sides of the ceramic case for preheating the roasting plates so as to serve roasted food on the preheated roasting plate which may keep the food at a proper temperature to eat during the meal.

[15] The solid fuel case is made in the size as calculated for receiving the solid fuel as much as to cook food for 24 hours by a single time fuel injection. The ceramic case is in the sectional shape for preventing the dust generated by the combustion of the solid fuel from being accumulated on a top part at the outer surface maximumly. The combustion die and the cap-shaped element are individually made with materials strong against heat since the combustion die and the cap-shaped element are exposed to the heat of high temperature during the combustion of the solid fuel and so apt to be corroded easily. Therefore, the corrosion of the combustion die or the cap-shaped element may be restrained and exchange thereof may be achieved conveniently. A butterfly type wing is mounted at a lower part in the ceramic case for recognizing a remaining amount of the fuel received in the solid fuel case, wherein an indication pin is attached to an end of the butterfly type wing which is the part exposed to the outside of the ceramic case and operates by a restoring spring.

Advantageous Effects

[16] The present invention suggests a method for revealing natural taste and flavor of food maximumly together with nutritions thereof and also resolve problems in the fuel supply, fuel combustion, combustion heat flow, roasting and serving food, keeping the roaster clean, safety in use, energy consumption, manpower and the like.

[17] Further, the fan motor of which the rpm is controllable is driven during the combustion for controlling an air suction amount for the combustion to achieve complete combustion and keeping uniform and proper roasting temperature continuously.

[18] Furthermore, according to the roaster of the present invention, the atmospheric pollution or room environmental pollution possibly generated by the irregular combustion of the solid fuel may be prevented, the waste of manpower for injecting the solid fuel may be reduced, and the danger of fire caused by the leakage of heat or dust during the fuel injection may be prevented.

[19] In addition, impact caused in the process of opening or closing the opening/closing door may be prevented by using the rails so that the damage of the ceramic case may be prevented. The ceramic case has an inside formed of two or more overlapped layers made of heat-resistant glass or any other heat-resistant materials , so that the food in the ceramic case may be prevented from being polluted by ceramic particles which are deviated by the deterioration of the ceramic case owing to the heat of high temperature.

[20] In the serving of the food, the food may be applied with the far infrared ray effect, anion effect and the ceramic effect concentratedly in a shortest time by the heat applied to the ceramic case, so that the food may be served with the natural taste, flavor and nutritions maximumly.

[21] The smoke generated in the process of roasting the food may be discharged via the smoke discharging holes, so that the generation of the black dirt in the ceramic case or the food may be prevented and a lot amount of food may be roasted instantly and served instantly in a limited time.

Brief Description of the Drawings

[22] The objects, features and advantages of the present invention will be more clearly understood from the following detailed description in conjunction with the accompanying drawings, in which:

[23] Fig. 1 is a front view showing a roaster according to a preferred embodiment of the present invention. [24] Fig. 2 is a side view showing the roaster of the present invention.

[25] Fig. 3 is a sectional view showing an example that a combustion die serving as a combustion part of solid fuel of the roaster according to the present invention with a cap-shaped element for controlling a fuel supply amount.

[26] Fig. 4 is a view showing the cap-shaped element controlling solid fuel supply for the roaster of the present invention.

[27] Fig. 5 is a cross-sectional view of the combustion die of the roaster according to the present invention.

[28] Fig. 6 is a view showing a solid fuel supply case for storing and supplying solid fuel in the roaster according to the present invention.

[29] Fig. 7 is a front view showing an instant roaster as disclosed in Korean Patent Application No. 10-2005-0047505.

[30] Fig. 8 is a cross-sectional view showing a ceramic case of the roaster according to the present invention.

[31] Fig. 9 is a perspective view showing a roasting die of the roaster according to the present invention, which is integrated into a door for opening or closing the ceramic case.

[32] Fig. 10 is a sectional view showing an example that a far infrared ray ceramic is joined with heat-resistant materials such as heat-resistant glass by two or more layers in the ceramic case of the roaster according to the present invention.

[33] Fig. 11 is a view showing an installation example of a butterfly type wing for recognizing a fuel remaining amount in a fuel case of the roaster according to the present invention.

[34] Fig. 12 is an exploded perspective view showing a sawdust stove as disclosed in

Korean Utility Model Laying-Open Publication No. 1978-0004973. Mode for the Invention

[35] Now, a roaster according to the present invention will be described in more detail in the structure and operation thereof with reference to the accompanied drawings.

[36] Fig. 1 is a front view of a roaster according to the present invention and Fig. 2 is a side view thereof. Referring to Fig. 1 and Fig. 2, the roaster according to the present invention includes a body part in a certain shape, an insulating wall element 11 forming an outside for keeping internal heat, a fuel case 62 mounted at an upper part of the body part, that is, a ceramic case 13, and a fuel case lid 61 mounted at an upper part of the fuel case for closing the fuel case, wherein adhesion surfaces between the fuel case 62 and the fuel case lid 61 are in close contact for preventing atmospheric air from being introduced.

[37] A combustion die 50 is positioned at a lower part of the fuel case in connection and secures a cap-shaped element inside as shown in Fig. 3, wherein the cap-shaped element 40 is formed with a tap 42 at a top part and the tap 42 is coupled with a tap holder 44. In combustion procedure, the tap holder 44 connected to the cap-shaped element 40 is rotated right and left by several times for improving the flow of fuel when abnormality is generated in a combustion part where the flow of solid fuel 14 is continuously generated.

[38] Abnormal combustion happens due to uniform flow of the slid fuel if a normal position of the cap-shaped element 40 is changed in the combustion die 50 in the process of injection of the solid fuel 14.

[39] In order to prevent the abnormal combustion, the cap-shaped element 40 is formed with a plurality of protruded legs 41 at a lower end, wherein the combustion die 50 is formed with seats for securing the legs 41 of the cap-shaped element 40 inside.

[40] Therefore, the change of the position of the cap-shaped element 40 is prevented in advance and smooth fuel flow and uniform combustion may be realized in the supply and combustion of the solid fuel 14.

[41] Further, the fuel case 62 is in the size sufficient to receive the solid fuel 14 as much as required for the use of a single day by one time fuel injection, so that the leakage of heat or dust which might be generated in the process of the fuel injection may be prevented maximumly.

[42] In addition, in order to estimate an amount of the fuel received in the sealed fuel case and calculate a proper supply time for the slid fuel, a butterfly type wing 115 is mounted at a lower part in the fuel case and an indication pin 114 is connected to the butterfly type wing 115 and protruded to the outside of the fuel case, so that the indication pin 114 is driven by a restoring spring 113.

[43] Now, the construction of the roaster according to the present invention will be described in more detail hereinafter.

[44] As the solid fuel is injected into the fuel case, the butterfly type wing 115 moves downward by the weight of the fuel and the indication pin 114 connected to the butterfly type wing 115 indicates downward direction as shown in Fig. 11.

[45] As the weight of the fuel is decreased by the combustion of the fuel, the butterfly type wing 115 indicates upward direction by the restoring force of the restoring spring 113. A proper fuel supply time for the solid fuel may be expected with reference to the operation of the butterfly type wing 115.

[46] The solid fuel 14 for the combustion are selected randomly from the granule phase fuel of a predetermined size and gas fuel, liquid fuel and electric energy may be also utilized.

[47] The combustion die 50 and the cap-shaped element 40 are exposed to the heat of high temperature in the structure during the combustion of the solid fuel 14, so that rapid corrosion may happen in the combustion die 50 and the cap-shaped element 40 by the heat.

[48] In order to prevent the corrosion and further simplify exchange work in the case of facility change, the combustion die 50 and the cap-shaped element 40 are separately made with heat-resistant metal or heat resistant ceramic materials.

[49] Further, the ceramic case 13 mounted at a predetermined position in the body part of the roaster of the present invention is formed with paths at right and left sides for inducing flows 110 of the heat, so that the heat generated at the upper part in the combustion die 50 moves downward continuously, heating upper and lower and right and left outer surfaces of the ceramic case 13.

[50] When cooking food, a roasting die 91 is integrated into an opening/closing door 92 for resolving problems which may happen in the process of the cooking.

[51] That is, the cooking is realized conveniently and safely without any danger of burn or fire by securing food 154 on the roasting die 91 and reciprocating the opening/ closing motion of the opening/closing door 92 by using a door handle 93.

[52] The reciprocation of the opening/closing motion of the opening/closing door 92, may be achieved silently by reciprocation rails 152 and rail guides 94 which minimize vibration in the opening/closing motion and prevent damage of the ceramic case in advance.

[53] In order to resolve pollution of food due to deviation of ceramic particles from a ceiling portion in the ceramic case 13, the ceramic case 13 is overlapped by a case 102 formed of glass or heat-resistant materials double.

[54] Further, in order to prevent accumulation of dust which is generated in the process of combustion at an upper part of an outer surface of the ceramic case 13, the ceramic case is formed in a proper shape as shown in Fig. 8, wherein the outer surface of the ceramic case is formed with patterns to increase heat contact surfaces for maximizing thermal conductivity of the ceramic case.

[55] The ceramic case 13 is formed with smoke discharging holes 205 of a certain size at certain positions for discharging the smoke generated in the process of cooking.

[56] The smoke generated by roasting some food is discharged via the smoke discharging holes 205 and the discharged smoke is joined into the flow of heat so that the smoke is discharged together with the heat via complete combustion in the roasting smoke flow direction.

[57] A waste heat discharging smoke pipe 192 is mounted at a lower part of the ceramic case 13 and a fan motor 191 is connected with the waste heat discharging smoke pipe 192, wherein the fan motor 191 is controllable in its rotation speed for the intake for combustion and discharge of waste heat.

[58] The air for burning the solid fuel is inhaled via combustion air suction holes 52 only and discharged via the waste heat discharging smoke pipe 192 only at the lower part of the ceramic case in the sealed structure. Therefore, the food roasted in the ceramic case is served as being laid on the roasting plate, which is preheated in the preheating chamber, and any additional heating elements are not necessary any more for keeping the warmth of the food during meal, since the latent heat of the preheated roasting die keeps the food at a proper temperature for a person to eat continuously.

[59] Now, operation of the roaster according to the present invention will be described in more detail hereinafter.

[60] As the fuel case 62 for storing solid fuel inside is supplied with the solid fuel 14 and a sealing lid 61 is closed, the fan motor 191 of which rpm is controllable is driven for inhaling air for combustion via the air suction holes 52 of the combustion die 50.

[61] As fire of a torch lamp for ignition is applied to the air suction hole the fire is inhaled into the air suction hole and ignition of the solid fuel which is received in the combustion space part 31 is realized. The ignited solid fuel and the inhaled combustion air makes combustion. As the combustion is advanced, the volume of the solid fuel in the fuel case is reduced and moved downward by own weight thereof for filling spaces of burnt solid fuel, so that the burning and supplying of the solid fuel is realized continuously by the automatic charging.

[62] The heat of high temperature generated by the combustion moves downward along a path of the heat for heating the ceramic case 13 and moves downward further to be discharged to the outside via the waste heat discharging smoke pipe 192.

[63] The heat is transmitted to the barrier wall 111 having high thermal conductivity in the process of the downward movement, so that the transmitted heat is applied to the roasting dies.

[64] If an automatic temperature controller is mounted to be used in connection with the driving time of the fan motor 191 and a set temperature degree, a certain proper temperature may be kept continuously.

[65] As the internal temperature of the ceramic case 13 reaches to a proper temperature, the roasting die 91 is withdrawn by means of the door handle 93, which is mounted to the opening/closing door 92.

[66] Then, the opening/closing door 92 is pushed to be closed in close contact after food

154 is laid on the exposed roasting die 91.

[67] The food laid on the roasting die 91 in the ceramic case 13 is roasted and smoke generated by the roasting of the food is discharged via the discharging holes 205 which are formed in the ceramic case, wherein the smoke is advanced downward along the flow 204 of the smoke and joined into the flow 110 of the heat so that the smoke and the heat are discharged via the waste heat discharging smoke pipe 192 after complete combustion. [68] Ashes 201 generated in the process of the roasting are accumulated to a portion formed with an ash discharge hole 200 so that the accumulated ashes are discharged via the ash discharging hole 200.

[69] When serving the food roasted in the ceramic case, the roasting plate, which is preheated in the preheating chamber is withdrawn and the food is laid on the roasting plate, so that the warmth of the food may be kept continuously during meal without using any additional heating elements, since the latent heat of the preheated roasting plate keeps the warmth of the food at a proper temperature to eat continuously.

[70] Although the foregoing description has been made with reference to the preferred embodiments, it is to be understood that changes and modifications of the present invention may be made by the ordinary skilled in the art without departing from the spirit and scope of the present invention and appended claims. Industrial Applicability

[71] The roaster according to the present invention may be applied to large-scaled restaurants, resting places of express highways, and any other places to cook and eat a large amount of food in a short time without any limits and broadly applicable in the various industrial fields. Sequence Listing

[72] roaster,ceramic,layer,infrared,fuel,wall

Claims

[1] Roaster, comprising: an insulating wall element forming an outer body part, a ceramic case formed in the cylindrical shape with two or more layers of far infrared ceramic materials and heat-resistant materials in the insulating wall element; a fuel case for storing fuel for downward combustion at an upper part of the ceramic case; preheating chambers for roasting plates, positioned at right and left sides of the ceramic case and separating an inner space defined by the insulating wall element; an opening/closing door connected to a roasting die moving reciprocatingly in the ceramic case and serving as a part of the insulating wall element; and a smoke pipe for discharging waste heat at a lower part of the ceramic case. [2] The roaster as claimed in claim 1, wherein the ceramic case is formed with smoke discharging holes at predetermined positions for discharging smoke generated by roasting out of the ceramic case. [3] The roaster as claimed in claim 1, wherein rails are additionally mounted to the ceramic case for guiding reciprocation motion of the opening/closing door. [4] The roaster as claimed in claim 1, wherein the cap-shaped element is positioned at a lower part of the fuel case for guiding flow of fuel, and a combustion die secures the cap-shaped element and forms a combustion space. [5] The roaster as claimed in claim 4, wherein the cap-shaped element is formed with a tap and a tap hole at a top part so that the cap-shaped element moves by a tap holder coupled in the tap hole. [6] The roaster as claimed in claim 1, wherein a fuel lever is additionally mounted to the fuel case for measuring a remaining amount of fuel received in the fuel case.