JP2019070513A - Furnace - Google Patents

Abstract

To provide a stove with good combustion efficiency.SOLUTION: A stove 2 includes: a housing 10 formed into a cylindrical shape; a fire bed 20 disposed in the housing 10; and an ignition agent placement tool 30 disposed in the housing 10. The fire bed 20 serves so that a solid fuel is placed thereon and is disposed in the housing 10. The ignition agent placement tool 30 serves so that an ignition agent is placed thereon and is disposed below the fire bed 20 in the housing 10. In the housing 10, a combustion part 10A for performing combustion is formed in an area above the fire bed 20 and a ventilation part 10B is formed below the fire bed 20. An access port 10AX for taking the solid fuel thereinto/therefrom is formed at the combustion part 10A. A vent hole 10BX for enabling circulation of a gas between an external space and an internal space of the housing 10 is formed at the ventilation part 10B.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a furnace.

  The stove used for cooking outdoors by a barbecue etc. is known. In the conventional stove, solid fuel (such as charcoal) was placed on the grate arranged in the combustion chamber, and the food was heated using the cookware (such as grill, iron plate or container) placed on it. (For example, patent document 1).

Japanese Patent Application Publication No. 2001-186991

  However, as cooking continues, the solid fuel will be shattered and broken up on the grate. If the cooking is continued as it is, the solid fuel is scattered on the grate, and as a result, the heat generated in the stove is not transmitted to the predetermined position, and the thermal efficiency is very poor. Such problems are not limited to stoves, but are common to furnaces, such as fireplaces for warming up.

  The present invention has been made in view of such circumstances and provides a thermally efficient furnace.

  The furnace according to the present invention comprises a housing and a grate arranged in the inner space of the housing and on which solid fuel is placed, and the upper surface of the grate is formed in a mortar shape. Do.

  According to the present invention, a furnace with high thermal efficiency can be provided.

It is a perspective view which shows the outline | summary of a 1st stove. (A) is a disassembled perspective view which shows the outline | summary of a 1st stove. (B) is a top view of a grate, (C) is a top view of an ignition agent mounting tool. It is an expanded view which shows the outline | summary of a housing | casing. It is a sectional view showing the outline of the 2nd stove. (A) is a cross-sectional view showing an outline of a third stove. (B) is a top view which shows the outline | summary of a 3rd stove. It is a side view showing an outline of a grate positioning structure. (A) is a side view showing an outline of the grate positioning structure engaged with the uppermost engagement hole. (B) is a side view showing an outline of the grate positioning structure engaged with the lowermost engagement hole. (A) is a top view which shows the outline | summary of the mounting member provided with a flat plate and a reinforcement member. (B) is an external view which shows the outline | summary of a reinforcement member. (C) is a developed view showing an outline of a reinforcing member.

  As shown in FIGS. 1 and 2, as shown in FIG. 1, the stove 2 is disposed in a tubular housing 10, a fire floor 20 disposed in the housing 10, and the housing 10. And an ignition agent placement tool 30.

  The firebed 20 mounts solid fuel and is disposed inside the housing 10. The ignition agent placement tool 30 is for placing an ignition agent, and is disposed below the grate 20 inside the housing 10. In the housing 10, a combustion unit 10A that burns is formed above the grate 20, and a ventilation part 10B is formed below the grate 20.

  The combustion portion 10A is formed with an access port 10AX for taking in and out solid fuel, and the vent portion 10B is a vent for enabling the flow of gas between the external space and the internal space of the housing 10. 10BX is formed.

  The fire bed 20 is for placing solid fuel such as charcoal, and the height of the upper surface thereof has a so-called mortar shape in which the height gradually decreases from the edge toward the central portion 20C. Further, the grate 20 is formed with holes 20X for dropping down the reduced solid fuel and distribution. In addition, it is preferable that the hole 20X is formed in the bottom part (central part 20C) of the grate 20. Further, the diameter of the hole 20X is preferably shorter than the length of the new solid fuel.

  The shape of the upper surface of the fire bed 20 is square pyramidal, but may be pyramidal, conical, or crowned. Also, the bottom of the upper surface of the grate 20 may be sharp, rounded, or flat as illustrated. When the bottom of the top of the firebed 20 is flat, the length of the bottom of the top of the firebed 20 is preferably shorter than the length of the fresh solid fuel. Preferably, a hole 20X is formed at the bottom of the upper surface of the grate 20.

  The ignition agent placement tool 30 is for placing an ignition agent. With respect to the space between the ignition agent placement tool 30 and the fire bed 20, the ignition agent placed on the ignition agent placement tool 30 is for the solid bed placed on the fire bed 20, particularly in the central portion of the fire bed 20. And may be of an extent that can be ignited. Moreover, the height of the upper surface of the ignition mounting tool 30 is formed in what is called mortar shape which becomes low gradually toward 30 C of center parts from an edge. In addition, it is preferable that the hole 30X for dropping down the ignition agent which became small in the ignition agent mounting tool 30 is formed. In addition, it is preferable that the hole 30X is formed in the bottom part (central part 30C) of the ignition mounting tool 30. Further, the diameter of the hole 30X is preferably shorter than the length of the new ignition agent.

  It is preferable that the shape of the upper surface of the ignition agent placement tool 30 be the same as the shape of the upper surface of the grate 20. In addition, the bottom of the top surface of the ignition agent placement tool 30 may have an acute angle as shown, may be rounded, or may be flat. When the bottom of the top surface of the ignition agent placement tool 30 is flat, the length of the bottom portion of the top surface of the ignition agent placement tool 30 is preferably shorter than the length of the fresh solid fuel. Furthermore, it is preferable that the bottom of the ignition agent placement tool 30 and the bottom of the top of the grate 20 be on the same line. Preferably, a hole 30 </ b> X is formed at the bottom of the top surface of the ignition agent placement tool 30.

  Next, how to use the stove 2 will be described.

  On the case 10, cookware (not shown), such as an iron plate, a grill, a pot and a container, is placed. When the solid fuel is put into the access port 10AX, since the firebed 20 is in a mortar shape, the solid fuel is collected in the central portion 20C of the firebed 20. When the ignition agent is put into the air vent 10BX, the ignition agent is gathered to the central portion 30C of the ignition agent placement tool 30 because the ignition agent placement tool 30 has a mortar shape. The solid fuel is ignited by the ignited ignition agent and starts burning. The heat generated by the combustion rises and is transmitted to the cooking appliance to perform cooking.

  As the combustion progresses, the solid fuel collapses and becomes smaller. In the stove 2 of the present invention, since the firebed 20 has a mortar shape, large solid fuel gathers in the center 20C, and small solid fuel and ash fall from the hole 20X. Thus, since the solid fuel contributing to the combustion is concentrated at the center, the combustion is performed at the central portion of the housing 10. The central portion of the housing 10 is less susceptible to heat than the edge. Therefore, according to the present invention, the combustion efficiency and the heat transfer efficiency can be improved.

  In addition, vent holes 10BX are respectively formed on four side faces forming the vent portion 10B, and a central portion of the grate 20 projects to the vent portion 10B. Therefore, supply of oxygen to solid fuel and exhaust of carbon dioxide become smooth. The central portion of the grate 20 is preferably located at the same height as the vent 10BX.

  Preferably, a protrusion T is formed at the edge of the grate 20, and a long hole N through which the protrusion T (a hole insertion portion) can be inserted is formed in the housing 10. The elongated holes N are preferably formed to extend in the vertical direction. By moving the projection T up and down along the long hole N, the fire bed 20 attached to the housing 10 is shaken, and as a result, the large solid fuel in the fire bed 20 shifts to the center, small solid fuel and Ash will fall downward. Similarly, the same protrusion T may be formed on the edge of the ignition agent placement tool 30, and a long hole N through which the protrusion can be inserted may be formed in the housing. In such a case, the case 10 is formed in a rectangular shape as shown in FIG. Then, by engaging the fixtures 10T provided on the facing sides of the housing 10, the housing 10 preferably has a tubular shape (FIG. 1). As a result, the housing space of the case 10 can be reduced, and attachment of the grate 20 and the ignition agent placement tool 30 to the case 10 becomes easy.

In addition, although the long hole N was formed in the housing 10, the present invention is not limited to this, and instead of the long hole N, the protrusion T (a hole insertion portion in a state of inserting a circular hole, an elliptical hole, etc. ) May be formed in the housing 10 so as to be movable.

  Note that instead of the fire bed 20, the protrusion T of the ignition agent placement tool 30, and the long hole N of the housing 10, the fire bed 20 or the ignition agent placement tool 30 is provided with a leg, and the support portion of the leg is It may be provided on the inner wall.

  Further, as shown in FIG. 4, the stove 2 includes a thermoelectric conversion element 61 disposed above the grate 30 in the housing 10, a battery 62 for storing electric power generated by the thermoelectric conversion element 60, and a battery And a light 70 connected electrically and indirectly to 62. The thermoelectric conversion element 60 converts thermal energy into electrical energy. According to the thermoelectric conversion element 60, the energy of combustion heat can be efficiently used. Instead of the lighting 70, another load (charging device of the smartphone) may be used.

  Further, as shown in FIG. 5, the stove 2 may be provided with a heat spreader 80 disposed above the grate 30 in the housing 10. The heat spreader 80 transfers the heat received at the central portion below the plate in the horizontal direction to level the localized heat, and has a plate with high thermal conductivity (for example, a copper plate), There is a straightening member or the like having a straightening structure 80X that causes the updraft in the central portion to flow in the horizontal direction. The flow straightening structure 80X is in the form of a slit formed to extend from the center to the edge of the heat spreader 80, and the slit width preferably widens from the center to the edge. The heat diffusion tool 80 can level the unevenly distributed heat.

  The grate positioning structure 100 may be provided to allow the grate 20 to be locked at a predetermined position in the vertical direction. The grate positioning structure 100 is provided on the opposite side surfaces 10S of the housing 10. The details of the structure of the grate positioning structure 100 will be described below.

  As shown in FIGS. 6 to 7, the grate positioning structure 100 includes a side engaging portion 110 formed on the side of the housing 10 and an engaging tool 120 engageable with the side engaging portion 110. Equipped with The side engaging portion 110 is provided to protrude from the outer side surface of the housing 10. The engagement tool 120 includes a vertical plate portion 122 extending in the vertical direction, and a horizontal plate portion 124 extending from the vertical plate portion 122 to the left and right.

  In the longitudinal plate portion 122, a plurality of engagement holes 122X are arranged in the longitudinal direction of the longitudinal plate portion 122. Each engagement hole 122X is engageable with the side engagement portion 110. The horizontal plate portion 124 obliquely extends downward from the middle portion of the vertical plate portion 122. The engagement holes 122 </ b> X are preferably located on the upper and lower sides with respect to the proximal end 124 </ b> B of the lateral plate portion 124. At the end of the lateral plate portion 124, a notch portion 124X which enables the sliding movement of the protrusion T is formed. By arranging the protrusion T on the upper side of the lateral plate portion 124, the protrusion T is guided to the notch portion 124X by the oblique portion of the lateral plate portion 124. When the projection T engages with the notch 124X, the grate positioning structure 100 and the grate 20 are connected.

  Next, a method of using the grate positioning structure 100 will be described.

  In the pair of grate positioning structures 100, the four protrusions T of the grate 20 are engaged with the notches 124X (FIG. 6, FIG. 7 (A)). Next, the engagement hole 122 </ b> X located at the top of the vertical plate portion 122 is engaged with the side engagement portion 110. Thereby, the grate 20 is fixed at the lowermost position. On the other hand, when the engagement hole 122X positioned at the lowermost position of the vertical plate portion 122 is engaged with the side engagement portion 110, the grate 20 is fixed at the uppermost position (FIG. 7B). Further, since the engagement holes 122X are located on both upper and lower sides with respect to the base end portion 124B of the horizontal plate portion 124, the vertical plate portion 122 does not protrude from the housing 10 in the vertical direction. Position adjustment in the vertical direction of the grate 20 can be performed.

  Although the horizontal plate portion 124 obliquely extends downward from the middle portion of the vertical plate portion 122, the present invention is not limited thereto. For example, even if the horizontal plate portion 124 horizontally extends from the middle portion of the vertical plate portion 122 Good.

  In addition, you may position the ignition agent mounting tool 30 using the grate positioning structure 100. FIG.

  By the way, a flat plate (placement plate) may be placed on the upper opening of the housing 10, and a kettle, a pan, etc. may be placed thereon. In such a case, if the one placed on the flat plate is a heavy load, the strength of the flat plate becomes a problem. On the other hand, in order to secure the strength of the flat plate, it is not preferable that the weight of the flat plate becomes heavy. Therefore, it is preferable to provide the following reinforcing member below the flat plate.

  As shown in FIG. 8, the reinforcing member 210 provided on the lower surface side of the flat plate 200 is formed in a cross shape, and intersects the elongated first reinforcing member 211 and the elongated first reinforcing member 211. And an elongated second reinforcing member 222 disposed to Since the structures of the first reinforcing member 221 and the second reinforcing member 222 are in a symmetrical relationship, the description of the second reinforcing member 222 will be omitted, and the first reinforcing member 221 will be described.

  As shown in FIGS. 8A to 8B, the first reinforcing member 211 is located at both ends in the longitudinal direction, and the reinforcing structure 211A is located at the central portion in the longitudinal direction with respect to the second reinforcing member 212. And a notch structure 211B for fitting.

  Reinforcing structures 211A each have a U-shaped cross section, and a fixing portion 221 fixed to the lower surface of flat plate 200, a vertical portion 222 bent perpendicularly from the tip of fixing portion 221, and a vertical portion 222 And a folded portion 223 vertically bent from the tip of the Here, the vertical portions 222 of the reinforcing structure 211A respectively extend in the same direction as viewed from the flat plate 200. On the other hand, the folded portions 223 of the reinforcing structure 211A respectively extend in the opposite direction as viewed from the vertical portion 222.

  FIG. 8C shows a developed view of the first reinforcing member 211. As shown in FIG. A notch 211BX, which is a notch structure 211B, is formed at a midway portion in the longitudinal direction of the first reinforcing member 211. When the first reinforcing structure 211AX on one side and the second reinforcing structure 211AY on the opposite side to the first reinforcing structure 211AX are defined with reference to the notch 211BX, the first reinforcing structure 211AX is set in the longitudinal direction The second reinforcing structure is folded back by a valley fold line 231 set in the longitudinal direction. Thereby, the reinforcing structure 211A having a U-shaped cross section can be formed on both sides of the notch structure 211B.

  The reinforcing structures 211A each have a U-shaped cross section, and thus are lightweight and have sufficient strength. Further, in the reinforcing members 211 to 212, the vertical portions 222 of the reinforcing structure 211A respectively extend in the same direction as viewed from the flat plate 200, while the folded portions 223 of the reinforcing structure 211A each extend in the opposite direction as viewed from the vertical portion 222 ing. Furthermore, the notch structure 212 of the second reinforcing member 212 is formed between the reinforcing structures 211A. Therefore, by fitting the notch structure 211 of the first reinforcement member 211 to the notch structure 212 of the second reinforcement member 212, the cross-shaped reinforcement member 210 can be manufactured easily and inexpensively. .

  Note that an intermediate plate on which an object to be heated such as a food material is placed may be disposed between the grate 20 and the ignition agent placement tool 30.

  The forming material of the component parts of the stove 2 is preferably a metal such as steel plate or stainless steel.

  Although the stove 2 was described in the said embodiment, this invention is not limited to this, It is applicable also to furnaces, such as a fireplace.

  The present invention is not limited to the above-described embodiment, and it goes without saying that various modifications can be made without departing from the scope of the present invention.

Reference Signs List 2 stove 10 housing 10A combustion unit 10AX access port 10B combustion unit 10BX vent 20 fire floor 30 ignition agent mounting tool

The furnace according to the present invention comprises a housing and a grate arranged in the inner space of the housing and on which solid fuel is placed, and the upper surface of the grate is formed in a mortar shape, and The mounting member is disposed at the upper opening and has a mounting member for mounting an object, and the mounting member is provided on a mounting plate on which the object is mounted and a lower surface of the mounting plate. A reinforcing member, the reinforcing member including a first reinforcing member, and a second reinforcing member intersecting the first reinforcing member, the first and second reinforcing members being In each of the reinforcing members, a cut portion is formed at a midway portion in the longitudinal direction, and the first side reinforcement is formed on one side with respect to the cut portion. When it is defined as the structure and the second side reinforcement structure on the opposite side to the first side reinforcement structure, the first side reinforcement structure may be the placement board described in the foregoing. The first vertical portion extending vertically and the first bent portion bending from the first vertical portion, and the second side reinforcing structure includes the second vertical portion extending perpendicularly from the mounting plate; A second bent portion bent from two vertical portions, wherein the first vertical portion and the second vertical portion extend in the same direction from the flat plate side, and the first bent portion and the second bent portion are different from each other It is characterized by extending in the direction.
In addition, the furnace of the present invention comprises a cylindrical casing, and a fire bed disposed in the internal space of the casing and on which solid fuel is placed, and the upper surface of the fire bed is formed in a mortar shape The central portion of the upper surface of the grate is lower than the edge surrounding the central portion, and a plurality of holes are formed in the grate, and the solid fuel is inserted into the housing. A solid fuel insertion opening is formed, and the solid fuel insertion opening is positioned above a position where the grate is installed.
Furthermore, the furnace according to the present invention comprises a cylindrical casing, and a gauze arranged in the inner space of the casing and on which solid fuel is placed, and the casing is arranged below the gauze in the casing. The upper surface of the grate is formed in a mortar shape, and the central portion of the upper surface of the grate is lower than the edge surrounding the central portion, A plurality of holes are formed in the fire bed, the upper surface of the ignition agent placement device is formed in a mortar shape, and the central portion of the upper surface of the ignition agent placement device is lower than the edge portion surrounding the central portion A central portion of the grate is positioned above a central portion of the igniting agent mounting tool.

Claims (9)

And
And a grate arranged in the inner space of the case and on which solid fuel is placed;
The furnace characterized in that the upper surface of the grate is formed in a mortar shape. An ignition agent placement tool disposed below the grate in the housing;
The furnace according to claim 1, wherein an upper surface of the ignition agent placement tool is formed in a mortar shape. The housing has a hole formed on the side,
The grate includes a hole insertion portion which is inserted into the hole;
The furnace according to claim 1 or 2, wherein the hole insertion portion is movable along the hole. The hole insertion portion is movable between a first position and a second position in the hole;
The housing is
It has a grate positioning structure capable of locking the hole insertion portion at each of the first position and the second position,
The grate positioning structure is
A side engaging portion formed on the side of the housing;
A first plate portion in which first and second engagement holes engageable with the side surface engaging portion are arranged in the movement direction;
A second plate portion extending from the first plate portion between the first engagement hole and the second engagement hole and connectable to the hole insertion portion;
The furnace according to claim 3, comprising:   5. The housing according to claim 1, wherein the housing is provided with an opening for communicating the upper surface side of the gauze with the external space of the housing among the internal space of the housing. The furnace described. A thermoelectric conversion element disposed above the grate in the housing;
The furnace according to any one of claims 1 to 5, further comprising: a load or a battery electrically connected directly or indirectly to the thermoelectric conversion element.   The furnace according to any one of claims 1 to 5, further comprising a heat spreader disposed above the grate in the housing. The housing is
A vent provided below the grate,
The furnace according to any one of claims 1 to 7, wherein a central portion of the grate protrudes toward the vent hole. A mounting member disposed in the upper opening of the housing for mounting a thing,
The above-mentioned mounting member is
A placing plate on which the object is placed;
And a reinforcing member provided on the lower surface of the mounting plate.
The reinforcing member is
A first reinforcing member,
And a second reinforcing member intersecting with the first reinforcing member,
The first and second reinforcing members are each formed of a long plate material,
In each of the reinforcement members, a cut portion is formed at a midway portion in the longitudinal direction,
When the first side reinforcing structure on one side and the second side reinforcing structure on the opposite side to the first side reinforcing structure are defined based on the cut portion,
The first side reinforcing structure is
A first vertical portion vertically extending from the mounting plate;
A first bent portion bent from the first vertical portion;
The second side reinforcing structure is
A second vertical portion vertically extending from the mounting plate;
And a second bent portion bent from the second vertical portion,
The first vertical portion and the second vertical portion extend in the same direction from the flat plate side,
The furnace according to any one of claims 1 to 8, wherein the first bent portion and the second bent portion extend in different directions.

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