JP2010243137A - Fire power-adjustable sunken hearth - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fire-power adjustable sunken hearth capable of adjusting fire power of a burning material such as firewood and charcoal of a firing section by adjusting a wind velocity to a firing section of a fire grate upper part by a fan, and properly selecting fire power according to a cooking menu. <P>SOLUTION: In this fire power-adjustable sunken hearth, a fire grate is placed on the center of a bottom section of an ash receiving box of the sunken hearth, the fan is disposed to supply the air to the firing section of the fire grate upper part from a lower part of vent holes of the fire grate, and further a wind velocity adjusting means is disposed to adjust the wind velocity of the air to the firing section by the fan. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

Detailed Description of the Invention

  The present invention is suitable for various dishes by adjusting the wind speed to the upper saddle of the baking pan formed in the center of the bottom of the ash receiving box at the hearth, and by adjusting the thermal power of combustion products such as firewood and charcoal in the saddle This relates to a hearth that can be adjusted with a thermal power so that a good thermal power can be obtained.

  For example, Patent Document 1 includes a vent passage that is connected to a vent hole that is opened in the furnace chamber portion of the hearth and supplies air to the furnace chamber portion from the outside, and the flow rate of the air is adjusted in the vent passage. The structure of the hearth device provided with the air amount adjusting means is described.

  This Patent Document 1 states that “the air amount adjusting means 5 is capable of zeroing the air flow rate, that is, blocking the air passage 17, and as shown in FIGS. A damper blade 50 disposed in the passage 17 is pivotally supported via a support shaft 51. An operation knob 53 for externally operating the rotation of the damper blade 50 is provided on the furnace edge 15. The tip of the support shaft 54 and the support shaft 54 that supports the operation knob 53 are connected to each other in the gear box 56 via bevel gears 57 and 58 ”[0010].

  Further, in Patent Document 1, “the air passage for supplying air to the furnace chamber portion is provided, and the air amount adjusting means for adjusting the air flow rate is provided in the air passage. By operating so that air can circulate, air is supplied from the outside into the furnace chamber, and a sufficient amount of oxygen is always supplied to the furnace chamber, thereby preventing incomplete combustion caused by lack of oxygen. [0021] "is explained.

  However, in Patent Document 1, a sufficient amount of oxygen is not supplied to the furnace chamber portion of the hearth and incomplete combustion caused by causing oxygen shortage is prevented. It is designed to take in air, and forcibly sends a wind to the top of the fireplate at the bottom of the hearth by a fan, and adjusts the wind speed to adjust the thermal power of firewood and fired combustibles. The proper firepower is not obtained for each dish.

  Further, in Patent Document 2, an air circulation mine is arranged in a refractory structure housed in a hearth firebox, and an air circulation mine is provided with an air circulation wellhead and an air mine on the side wall of the refractory structure. The hearth is characterized in that air is naturally circulated through the side wall and the bottom wall air mine where ash is stored and buried by connecting the air pits provided in the mine.

  Patent Document 2 states that “the arrangement of the air circulation wellhead and the air well allows the air to flow from the side surface to the ash stored in the refractory structure and from the bottom surface to the entire ash to contain oxygen and burn. “It provides a new hearth with a completely different function from conventional ones that suppresses the generation of ash and also suppresses harmful gases such as carbon dioxide, because it gives vitality to the entire bottom and enhances combustion.” [0022] Explained.

  However, in Patent Document 2, natural air is circulated from the side surface to the ash housed in the fireproof structure and from the bottom surface to the entire ash to give vitality to the entire bottom portion of the charcoal fire containing oxygen to enhance combustion. It is a thing, forcibly sends a wind to the upper part of the top of the pan of the hearth by a fan, adjusts the wind speed, adjusts the thermal power of the firewood and charcoal, etc. It is not intended to select the appropriate firepower.

  Further, in Patent Document 3, both ends of the ventilation pipe 4b are cut openings, and as shown in FIG. 4, the openings are provided penetrating through the case wall of the furnace case 4, and projecting upward near the center of the length thereof. An end 4c is provided, for example, a circular net 4d is placed on the open end 4c, on which a soot and charcoal structure is burned.

  Patent Document 3 states that, “When burning firewood or charcoal, a ventilation pipe 4b is provided in the furnace case 4 in the hearth, so that an appropriate amount of air is naturally supplied to the fuel on the net 4d. Therefore, combustion efficiency is good, soot and charcoal can be burned completely, and generation of harmful components due to incomplete combustion is prevented ”[0016].

  However, in Patent Document 3, when burning firewood or charcoal, a ventilation pipe is provided in the furnace case at the hearth of the hearth, and an appropriate amount of air is naturally supplied to the fuel on the net 4d, so that the combustion efficiency is good. It can burn charcoal and charcoal completely, preventing the generation of harmful components due to incomplete combustion, and forcibly sending air to the upper part of the pan of the hearth at the bottom of the hearth and adjusting the wind speed Therefore, it is not intended to adjust the fired fire power such as firewood and charcoal in the buttock to obtain an appropriate firepower according to each dish.

Patent Document 1 JP-A-05-203152 Patent Document 2 JP-A-2005-030654,
Patent Document 3 Japanese Utility Model Publication No. 05-066401

Problems to be solved by the invention

  The present invention is suitable for each dish by adjusting the heating power of the firewood such as firewood and charcoal by adjusting the wind speed by forcibly sending the wind by the fan to the top of the fireplate at the bottom of the hearth bottom. A fire net, etc. can be installed on the mounting frame on the pan, and grilled meat, etc. can be directly cooked on the top surface of the top plate, or on the top surface of the top plate. We provide a hearth with adjustable heat power that can be used for various dishes (baked meat dishes, grilled fish dishes, frying pan dishes, sukiyaki dishes, pot dishes, rice dishes, etc.) on top of pots and kettles.

Means to solve the problem

  According to the first aspect of the present invention, a fire pan is installed at the center of the bottom of the ash receiving box at the hearth, and a fan is provided for supplying air from below the vents of the fire tray to the flange on the top of the pan. It is an object of the present invention to provide a hearth that can be adjusted in terms of thermal power, provided with a wind speed adjusting means for adjusting the temperature.

  In this invention, by adjusting the wind speed to the upper part of the pan by the fan, it is possible to adjust the strength of the fired power of the fired material such as firewood and charcoal of the buttocks. Can be selected.

  According to a second aspect of the present invention, there is provided the hearth with adjustable thermal power according to the first aspect, wherein the wind speed in the wind speed adjusting means is adjusted within a range of 0 to 3 m / sec.

  In this invention, in the range of the wind speed in the said wind speed adjustment means 0-3 m / sec, for example, air blow stop = 0 m / sec (steaming), low fire = 0.2-0.6 m / sec, medium fire = 0. By selecting 7 to 1.5 m / sec and strong fire = 1.6 to 3 m / sec, it is possible to provide a hearth that can be adjusted in terms of heating power to obtain appropriate heating depending on various dishes.

  According to a third aspect of the present invention, there is provided a mounting frame for the upper plate above the pan, the distance between the pan and the bottom surface of the upper plate is 5 to 30 cm, and the outer periphery of the upper plate placed on the mounting frame. It provides the hearth with adjustable heating power according to any one of claims 1 to 2, wherein the inner wall is larger by 2 to 10 cm than the outer periphery of the flange.

  In this invention, it is possible to cook a grilled meat, grilled fish, etc. directly on the wire mesh by installing a separate wire mesh on the mounting frame, and of course, an iron plate is installed directly on the upper surface of the upper plate by installing an upper plate on the mounting frame. Various dishes (grilled meat dishes, grilled fish dishes, frying pan dishes, sukiyaki dishes, hot pot dishes, rice cooked dishes, etc.) can be performed by placing a pot or kettle on the upper surface of the dish or the upper plate. In this case, charcoal such as soot is not easily attached to the outer surface of the pan, the pot or the like because it is mounted on the upper plate.

  The distance between the pan and the wire mesh on the mounting frame or the bottom surface of the upper plate is preferably 5 to 30 cm. If it is less than 5 cm, the interval between the fire tray and the wire mesh on the mounting frame or the bottom surface of the mounting plate is too narrow. Moreover, if it exceeds 30 cm, the space | interval of a fire pan and the wire mesh on a mounting frame, or an upper plate bottom face is too far, and the thermal power of combustion substances, such as charcoal and firewood, cannot be obtained efficiently.

  Furthermore, it is necessary to make the outer periphery of the upper plate 2-10 cm larger than the outer periphery of the collar. If it is less than 2 cm, fire dust such as firewood and charcoal that burns at the top of the pan can not be reliably prevented from spreading around the table. Moreover, when it exceeds 10 cm, charcoal, firewood, etc. will become too large around an upper plate with respect to the collar part on a fire pan, and it will become difficult to throw in combustibles, such as firewood, charcoal. Preferably, it is 3-5 cm. In addition, the outer periphery of a collar part changes with the magnitude | sizes of input material, and is about 5-25 cm normally.

The invention according to claim 4 is the heating power adjustment according to any one of claims 1 to 3, wherein the area of the baking pan is in the range of 25 to 900 cm ^{2 and} the porosity of the ventilation hole of the baking tray is 20 to 90%. It provides a possible hearth.

In the present invention, it is appropriate that the area of the pan is in the range of 25 to 900 cm ² . If the area of the pan is less than 25 cm ² , the area of the heel portion at the top of the pan is too narrow, and the burning range of firewood, charcoal, etc. is narrow and sufficient fire power cannot be obtained. On the other hand, if the area of the baking pan exceeds 900 cm ² , the area of the heel portion at the top of the baking pan is wide and the combustion range of firewood, charcoal, etc. is widened, so that the combustion products such as firewood, charcoal, etc. are wasted. Preferably, a 60~400cm ^2.

  It is important that the porosity of the vent in the pan is 20-90%. If the porosity is less than 20%, uniform air cannot be sent to the buttocks at the top of the pan, and if the porosity exceeds 90%, the ash in the ash tray and the unburned material at the top of the pan are discharged ashes. Accumulate in the hole. Preferably, it is 30 to 60%.

  According to a fifth aspect of the present invention, there is provided the hearth with adjustable thermal power according to any one of the first to fourth aspects, wherein a spark scatter prevention skirt is provided on the outer periphery of the upper plate.

  In this invention, it is possible to reliably prevent fire powder such as firewood and charcoal that burns in the upper pan of the pan from being scattered around the table. Or, even if the outer periphery of the upper plate is made smaller, it is possible to prevent sparks such as firewood and charcoal from scattering around the table.

  Further, the invention of claim 6 is the invention according to any one of claims 1 to 5, wherein an ash discharge hole is provided on the side of the hearth side below the fire pan, and the fan is formed to be openable and closable at the hearth side opening of the ash discharge hole. It provides a hearth with adjustable thermal power.

  In the present invention, air (oxygen) is supplied to combustion products such as firewood and charcoal in the buttocks from the vents of the fire pan having a certain area and a certain porosity by ensuring a constant wind speed selected by the fan. ) Can be sent, and an appropriate burning power can be obtained according to various dishes.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a plan view showing an embodiment of the present invention, FIG. 2 is a schematic sectional view taken along line II-II in FIG. 1, and FIG.

  As shown in FIGS. 1 to 3, a fire plate 2 is installed in the center of the bottom of the ash receiving box 1 of the hearth I, and a fan 4 that supplies air from the bottom of the vent 3 of the fire plate 2 to the flange A of the top of the pan 2. Wind speed adjusting means S (dial type knob) is provided on the side surface of the hearth 1 to adjust the wind speed of the air toward the flange A by the fan 4. T is a table, B is a heat insulating material, and C is ash.

  The wind speed in the wind speed adjusting means S is in the range of 0.2 to 3 m / sec. For example, as shown in FIG. 2, the air blowing stop = 0 m / sec (steaming), the low heat = 0.2 to 0.6 m / sec, Selection is made such that fire = 0.7 to 1.5 m / sec, high fire = 1.6 to 3 m / sec, and an appropriate fire control is obtained according to various dishes. The wind speed in the wind speed adjusting means S may be freely selected in the range of 0.2 to 3 m / sec, and the wind speeds set as blast stop, low fire, medium fire, and high fire may be selected.

  As shown in FIG. 3, an upper plate 5 is provided above the pan 2, and the mounting frame 6 is set so that the distance H between the pan 2 and the bottom of the upper plate 5 is 13 cm. The outer circumference of the upper plate 5 to be installed is 3 cm (width D) larger than the outer circumference of the flange A. The upper plate 5 is preferably made of a material having a diameter of about 40 cm and having an infrared effect. 6a is a fixed frame for fixing the upper plate 5 to the inner edge of the ash receiving box 1;

The area of the pan ² is 100 cm ² , and the porosity of the vent holes 3... Of the pan 2 is about 50%.

  Further, as shown in FIGS. 2 and 3, if a spark scatter prevention skirt 7 is provided on the outer periphery of the upper plate 5, it is possible to more reliably prevent the spark from being scattered on the table.

  An ash discharge hole 9 is provided on the bottom side 8 of the hearth 2 below the pan 2, and the fan 4 is formed in the open side 10 of the ash discharge hole 9 so as to be freely opened and closed. In such a structure, when the air volume from the fan 4 increases, the ash discharge hole 9 enters a wind pressure state. Therefore, it is possible to improve the combustion efficiency by reducing the area of the pan and reducing the porosity of the vent hole and increasing the wind speed to the flange. On the other hand, it is possible to increase the area of the pan and increase the porosity of the ventilation holes, thereby reducing the wind speed to the heel. In addition, the lid 12 can be formed to be openable and closable at the hearth side opening 10 to completely prevent air from entering the heel.

The invention's effect

  As described above, in the present invention, it is possible to adjust the heating power of the burning material such as the firewood or charcoal of the buttocks by adjusting the wind speed to the upper bowl of the pan by the fan, and the appropriate heating power according to each dish Can be selected.

  Moreover, in the range of 0-3 m / sec of the wind speed in the said wind speed adjustment means, suitable heating can be obtained according to various dishes.

  In addition, while installing a wire mesh on the mounting frame, you can cook grilled meat and grilled fish directly on the net, while installing an upper plate on the mounting frame and directly cooking on the top plate or iron plate Various dishes (grilled meat dishes, grilled fish dishes, frying pan dishes, sukiyaki dishes, hot pot dishes, cooked rice, etc.) can be prepared by placing a separate pot or kettle on the top surface. In addition, when the material which has a far-infrared effect is used for the said upper plate 5, it will be finished deliciously by making the street of the food to cook well. At this time, combustion charcoal such as firewood does not directly adhere to the outer periphery of the pan or the pot. The upper plate absorbs the rough heat of the flame of the combustion product and conveys the uniform to the pan.

  Also, by making the outer periphery of the upper plate larger than the outer periphery of the pan. It is possible to prevent fire powder such as firewood and charcoal that burns in the upper bowl of the pan from being scattered around the table. In addition, if a skirt for preventing sparks is provided, it is ensured that fire powder such as firewood or charcoal that burns in the upper buttock of the upper plate is scattered around the table without making the outer periphery of the upper plate extremely larger than the outer periphery of the pan. Can be prevented. The powder scattering skirt can also prevent hot air for people sitting at the table.

  In addition, by making the area of the pan and the porosity constant and optimizing the combustion range of firewood, charcoal, etc., it is possible to efficiently obtain thermal power and not to waste consumption of combustibles.

  Further, an appropriate amount of air (oxygen) is supplied to the burned material such as firewood and charcoal from the fire tray through a vent hole of the fire tray having a constant area and a constant porosity while ensuring a constant wind speed selected by the fan. It is possible to send a firepower of an appropriate combustion product according to various dishes.

  The top view which shows one Example of this invention,   II-II schematic cross-sectional view of FIG.   An enlarged cross-sectional view of the main part of the buttock

DESCRIPTION OF SYMBOLS 1 Ash receiving box 2 Fire tray 3 Ventilation hole 4 Fan 5 Placement plate 6 Mounting frame 7 Spark scatter prevention skirt 8 Hearth side surface 9 Ash discharge hole 10 Hearth side side opening A Range of buttocks D The outer periphery of the buttock A and the upper plate Width with outer periphery H Spacing between the pan and the bottom of the upper plate I Hearth S Wind speed adjusting means

Claims (6)

A fire plate is installed in the center of the bottom of the ash receiving box at the back of the hearth. A fan is provided to supply air from the lower part of the vent of the fire plate to the saddle at the top of the fire pan. A hearth with adjustable thermal power. The hearth with adjustable thermal power according to claim 1, wherein the wind speed in the wind speed adjusting means is adjusted in a range of 0 to 3 m / sec. An upper plate mounting frame is provided above the pan, the interval between the pan and the upper plate bottom is 5 to 30 cm, and the outer periphery of the upper plate placed on the mounting frame is 2 to 10 cm from the outer periphery of the flange. The hearth that can be adjusted in terms of thermal power according to any one of claims 1 and 2. The range area of 25～900Cm ² of chafing dish, thermal adjustable hearth according to any one of claims 1 to 3, the porosity of the vent hole of the pipe bowl is 20 to 90%. The hearth with adjustable thermal power according to any one of claims 1 to 4, wherein a skirt for preventing spark scattering is provided on the outer periphery of the upper plate. 6. The hearth with adjustable heat power according to claim 1, wherein an ash discharge hole is provided under the fire tray on the side of the hearth back, and the fan is formed to be openable and closable at an opening on the side of the hearth of the ash discharge hole.

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