JP6653001B1 - Flame heat retention device and stove provided with the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a flame heat retention device and a stove provided with the flame heat device, in which flame heat is retained in a chimney to increase combustion efficiency and suppress emission of sparks. SOLUTION: A lower annular portion 5 having an outer peripheral edge having substantially the same diameter as the inner diameter of the chimney 3 and having an opening 51 for smoke exhaust at the center thereof, and an opening of the lower annular portion 5 An upper disk portion 52 which is formed in the same size as 51 and is installed at a position above the opening portion 51, and the lower annular portion 51 and the upper disk portion 52 are separated by a predetermined interval in the vertical direction. And a plurality of connecting legs 7 for being installed in the chimney 3. [Selection diagram] Fig. 1

Description

  The present invention relates to a flame heat retention device capable of retaining flame heat flowing into a chimney to increase combustion efficiency, and a stove provided with the flame heat retention device.

  Camping is being enjoyed in various styles due to outdoor popularity. For example, camps have been conducted in relatively warm seasons such as summer, but in recent years camps in relatively low temperatures such as autumn and winter have become popular in order to avoid the heat of summer. Occasionally, snow camps are held.

  In a camp under such a low-temperature environment, a firearm for heating is used to protect the body from hypothermia, frostbite, and the like. In recent years, relatively small wood stoves that can be used in tents are sometimes used.

  By the way, in the conventional wood stove, Japanese Patent Application Laid-Open No. 2011-69522 proposes a wood stove provided with a secondary combustion chamber and a tertiary combustion chamber for burning combustion gas generated by primary combustion to increase combustion efficiency. (Patent Document 1).

JP 2011-69522 A

  However, compared to a general wood stove such as the invention described in Patent Literature 1, the inside of the stove is smaller in a small wood stove that can be used in a tent, and there is sufficient space for providing a secondary combustion chamber. There is no problem. Therefore, in the conventional small wood stove, the combustion gas contained in the flue gas is discharged from the chimney as it is, so that the combustion efficiency is low. For this reason, a large amount of firewood must be burned to heat the tent, and in snowy camps, the ground is covered with snow and the firewood cannot be collected. Was.

  In addition, a chimney installed in a small wood stove is shorter than a stationary wood stove chimney in consideration of portability and the like. For this reason, the sparks contained in the flue gas may be ejected to the outside without being burned out in the chimney, and may fall on the tent to make a hole in the tent and damage the tent.

  The present invention has been made in order to solve the above problems, and while increasing the combustion efficiency by retaining the flame heat in the chimney, it is possible to suppress the emission of sparks, flame heat retention device and The purpose is to provide a stove with this.

  The flame heat retention device according to the present invention, in order to solve the problem of retaining the flame heat in the chimney, retains the flame heat while passing the flue gas in the chimney installed in the stove, and also prevents the discharge of sparks. A lower annular portion having an outer peripheral edge having substantially the same diameter as the inner diameter of the chimney and having an opening for smoke exhaust at the center thereof, and a lower annular portion. An upper disk portion formed to be approximately the same size as the opening and installed at a position above the opening, and connecting the lower annular portion and the upper disk with a predetermined interval in the vertical direction. And a plurality of connecting legs for installation in the chimney.

  Further, as one aspect of the present invention, in order to solve the problem that the lower annular portion and the upper disk portion are integrally combined to facilitate placement in the chimney, each of the connecting legs is provided with the upper disk portion. An annular fitting notch is formed at a predetermined position of the longitudinal edge portion of the lower annular portion so as to be able to fit the inner peripheral edge thereof. May be.

  Further, as one aspect of the present invention, in order to solve the problem of connecting the flame heat retention device to a rotary smoke exhaust damper built in a chimney, each of the connecting legs is below the lower annular portion. And at the lower end thereof is formed a shaft loose fitting notch in which a rotary shaft of a rotary smoke exhaust damper installed in the chimney for adjusting the amount of smoke emission can be loosely fitted. May be.

  A stove according to the present invention is a stove in which a flue gas damper for adjusting a flue gas amount is arranged in a chimney in order to solve a problem of retaining combustion heat in a chimney and increasing combustion efficiency. The flame heat retention device is disposed above the smoke exhaust damper, and the connecting leg portion of the flame heat retention device is loosely fitted to the rotation shaft of the smoke exhaust damper and is installed in the chimney.

  According to the present invention, flame heat is retained in the chimney to increase combustion efficiency, and it is possible to suppress the emission of sparks and prevent the emission of sparks, so that it is particularly suitable for use in tents such as camps. A small stove can be provided.

It is a longitudinal section showing an embodiment of a stove concerning the present invention. It is a partial section front view showing a stove of this embodiment. It is a top view showing the stove of this embodiment. It is a perspective view showing the flame heat retention device of this embodiment. It is a perspective view showing the lower ring part in the flame heat retention device of this embodiment. It is a perspective view which shows the upper disk part and the connection leg part in the flame heat retention apparatus of this embodiment.

  Hereinafter, an embodiment of a flame heat retention device according to the present invention and a stove provided with the flame heat retention device will be described with reference to the drawings.

  As shown in FIGS. 1 to 3, the stove 1 of the present embodiment is installed in the stove main body 2, a chimney 3 for discharging smoke exhausted from the stove main body 2 to the outside, and inside the chimney 3. And a flame heat retention device 4. Hereinafter, each configuration will be described.

  The stove body 2 is a stove mainly used for heating, and is a stove that burns a solid fuel 8 such as firewood, molded firewood, wood pellets, coal, charcoal, and sawdust charcoal. Although the shape of the stove main body 2 is not particularly limited, the stove main body 2 in the present embodiment has a substantially cubic shape, as shown in FIGS. It is formed in a hollow shape to become a combustion chamber for burning. An opening 24 for installing the chimney 3 is formed in the top surface 21. One side portion 23 is provided with a fuel inlet 26 having an openable / closable lid 25 for introducing the solid fuel 8 into the inside. Further, in the present embodiment, the top surface portion 21, the lower surface portion 22, and the four side surface portions 23 are configured to be separable into respective members in order to be compactly stored and portable. A projection 27 or an insertion port 28 into which the projection 27 is inserted is formed at a connection portion of the stove body 23, and the stove body 2 having a substantially cubic shape is configured by assembling with a fastening member 29 such as a long bolt. It has become.

  Note that the stove body 2 is not limited to a dividable configuration, and the top surface portion 21, the lower surface portion 22, and the side surface portion 23 may be fixed to each other by welding or the like so as to be indivisible. Further, the position of the opening 24 for installing the chimney 3 is not limited to the top surface 21, and may be opened to any side surface 23. Further, the stove main body 2 is not limited to use as a heating device, and may be used as a heat source for cooking by allowing a cooking utensil such as a frying pan to be placed on the top surface 21.

  The chimney 3 is a cylindrical member for discharging smoke generated by burning the solid fuel 8 in the combustion chamber of the stove main body 2. In the present embodiment, the chimney 3 is an opening 24 of the top surface 21 of the stove main body 2. Linked to In the chimney 3 of the present embodiment, a smoke exhaust damper 9 for adjusting the amount of smoke exhaust is disposed.

  The smoke exhaust damper 9 in the present embodiment is a rotary damper, and includes a disk-shaped damper 91 disposed in the chimney 3 and a rotating shaft that rotates the disk-shaped damper 91 to adjust the degree of opening of the smoke exhaust path. 92.

  The disc-shaped damper 91 changes the area of the gap formed between the stack 3 and the inner peripheral surface 31 of the chimney 3 to change the width of the flue gas passage to adjust the amount of smoke discharged. 3 is formed in a disk shape having an outer diameter slightly smaller than the inner diameter.

  The rotating shaft 92 is a shaft for rotating a disk-shaped damper 91 disposed in the chimney 3. In the present embodiment, as shown in FIG. 3, the rotating shaft 92 is configured by a bar material whose base end side is bent in an L-shape. Have been. The rotating shaft 92 is installed so as to penetrate the chimney 3 along a direction perpendicular to the axis of the chimney 3, and fixes the disc-shaped damper 91 in a state where the disc-shaped damper 91 is arranged in the chimney 3. . Accordingly, the base end portion bent in the L-shape becomes a handle 93, and the disk-shaped damper 91 in the chimney 3 can be rotated from outside the chimney 3.

  The flame heat retention device 4 is installed in the chimney 3 as shown in FIGS. 1 and 2, and retains the flame heat passing through the chimney 3, and as shown in FIGS. It has an annular portion 5, an upper disk portion 6 installed above the lower annular portion 5, and a plurality of connecting legs 7 for connecting the lower annular portion 5 and the upper disk portion 6.

  The lower annular portion 5 is for retaining the flame heat passing through the chimney 3 together with the smoke and the sparks. , And a smoke exhaust opening 51 is formed in an annular shape (ring shape) having an opening at a central position thereof. Further, as shown in FIG. 5, the lower annular portion 5 in the present embodiment is positioned with respect to the center of the opening 51 so as to be easily fitted into the annular fitting notch 73 formed in the connecting leg 7. A substantially rectangular concave fitting recess 52 is formed at a point-symmetric position.

  The upper disk portion 6 is for retaining flame heat and sparks passing through the opening portion 51 of the lower annular portion 5, and is formed to be approximately the same size as the opening portion 51 as shown in FIG. . The upper disk portion 6 is installed at an upper position at a predetermined distance from the opening 51 by the connecting leg portion 7 so that the smoke exhaust can pass through the outer peripheral edge.

  The connecting leg portion 7 connects the lower annular portion 5 and the upper disk portion 6 at predetermined intervals in the vertical direction, and installs the lower annular portion 5 and the upper disk portion 6 in the chimney 3. It is for. The connecting leg portion 7 is formed to extend outwardly and downwardly from the outer peripheral edge of the upper disk portion 6 so as to easily support the lower annular portion 5 while having a spring property. Specifically, as shown in FIG. 4 and FIG. 6, the upper and lower disk portions 6 are formed of a pair of left and right plate-like connecting legs 7, extending from the outer peripheral edge of the upper disk portion 6 to the left and right sides. It is formed by bending toward. A concentric arc-shaped cut along the outer peripheral edge of the upper disk portion 6 is formed in the base end portion 71 on the upper disk portion 6 side so as to be approximately the same size as the opening portion 51 of the lower annular portion 5. 72 are provided. In addition, the notch 72 narrows the bending width, so that the bending operation is facilitated.

  In addition, each of the connecting legs 7, 7 in the present embodiment has an annular fitting notch 73 into which the inner peripheral edge of the lower annular portion 5 can be fitted, and an axial play that can be loosely fitted to the rotating shaft 92 of the smoke exhaust damper 9. And a notch 74.

  The annular fitting notch 73 is a notch into which the inner peripheral edge of the lower annular portion 5 can be fitted, and is formed at a predetermined position of the longitudinal edge 75 of the connecting leg 7. As shown in FIG. 6, a pair of elongated cuts formed along a direction perpendicular to the longitudinal direction at a substantially central position between a base end 71 and a lower end 76 of the connecting leg 7 in the longitudinal direction. It is configured as a chip. That is, as shown in FIGS. 1, 2 and 4, the notches 73 for fitting the annular ring are fitted into the fitting concave portions 52 formed on the inner peripheral edge of the lower annular portion 5, thereby forming the lower annular shape. The portion 5 is supported at a predetermined distance downward from the upper disk portion 6.

  The shaft loose fitting notch 74 is a notch for loosely fitting and supporting the rotary shaft 92 of the smoke exhaust damper 9 when the flame heat retention device 4 is disposed above the smoke exhaust damper 9. As shown in FIG. 7, the connecting leg 7 extends below the lower annular portion 5 to be fitted into the annular fitting notch 73, and a long and narrow cut formed along the longitudinal direction at the lower end 76 thereof. It is configured as a chip.

  In this embodiment, as shown in FIGS. 2, 4 and 6, each of the connecting leg portions 7, 7 is provided with a notch for annular fitting so that the shaft loose fitting notch 74 can be easily loosely fitted to the rotary shaft 92. It is bent outward at the position of the annular fitting notch 73 so as to expand in a substantially figure-eight shape below 73. Then, the shaft play fitting notch 74 is bent inward at the upper end position of the shaft play fitting notch 74 so that the portion provided with the shaft play fitting notch 74 is substantially vertical. The bent portion of the connecting leg portion 7 is narrower than the width of the connecting leg portion 7 at another position due to the shaft loose fitting notch 74 and the annular fitting notch 73, so that it is easily bent.

  The material used for the flame heat retention device 4 is appropriately selected from those having heat storage performance as well as heat storage performance. For example, a spring steel material (for example, JIS) having less distortion due to repeated heating and cooling is used. It is preferable to use SUP3, SUP6, SUP7, SUP9, SUP10, SUP12, etc. specified in the standard).

  Next, the operation of each configuration in the flame heat retention device 4 of the present embodiment and the stove 1 provided with the same will be described.

  A solid fuel 8 such as firewood is put into the combustion chamber of the stove body 2 and ignited. The burning of the ignited solid fuel 8 generates flame heat, sparks and smoke. These are discharged from the chimney 3 by the chimney effect, and the amount of smoke discharged changes the area of the gap formed between the chimney 3 and the disc-shaped damper 91 by rotating the rotation shaft 92 of the smoke discharge damper 9. To adjust.

  Flame heat, sparks, and smoke that have passed between the chimney 3 and the disc-shaped damper 91 pass upward from the opening 51 of the lower annular portion 5, and further pass through the upper disc portion 6 and the connecting leg 7. The gas is discharged from the upper part of the chimney 3 through the gap between them. During these passages, the lower annular portion 5, the upper disk portion 6, and the connecting leg portion 7 retain flame heat and sparks. Further, since the flow of the smoke is disturbed by the opening 51 of the lower annular portion 5, the residence time of the smoke and the air is prolonged, and the flame heat is easily retained. Further, the combustion gas contained in the flue gas is ignited when the retained flame heat exceeds the ignition temperature, so that the effect of secondary combustion can be expected.

  At this time, the chimney 3 is warmed by the retained flame heat or the heat of the secondary combustion, and if conditions are met, the area around the installation of the flame heat retention device 4 is warmed up as it becomes red hot.

  In addition, the sparks contained in the flue gas collide with the lower annular portion 5, the upper disk portion 6, the chimney 3 and the like, and burn out, or burn out due to the retained flame heat. Therefore, it does not erupt from the upper part of the chimney 3 together with the smoke.

According to the above-described flame heat retention device 4 of the present embodiment and the stove 1 having the same, the following effects can be obtained.
1. The amount of heat released around the chimney 3 can be increased by retaining the flame heat in the chimney 3.
2. Since the combustion gas contained in the exhaust gas can be secondarily burned by the retained flame heat, the combustion efficiency can be increased.
3. Since the combustion efficiency is enhanced, the consumption of the solid fuel 8 such as firewood can be suppressed.
4. The stagnant flame heat can burn out the sparks.
5. Since the discharge of sparks from the chimney 3 is suppressed, it is possible to prevent a hole from being formed in the tent.

  The flame heat retention device according to the present invention and the stove provided with the flame heat retention device are not limited to the above-described embodiment, and can be appropriately changed. For example, the shape of the stove main body 2 is not limited to a substantially cubic shape, and may be a cylindrical shape or the like as long as a space serving as a combustion chamber can be secured inside.

DESCRIPTION OF SYMBOLS 1 Stove 2 Stove main body 3 Chimney 4 Flame heat retention device 5 Lower annular part 6 Upper disk part 7 Connection leg part 8 Solid fuel 9 Smoke exhaust damper 21 Top surface part 22 Lower surface part 23 Side surface part 24 Opening 25 Cover 26 Fuel inlet 27 Projection Part 28 Insertion port 29 Fastening member 31 Inner peripheral surface 51 Opening 52 Fitting recess 71 Base end 72 Notch 73 Notch for annular fitting 74 Shaft loose fitting notch 75 Long edge 76 Lower end 91 Disc-shaped damper 92 Rotating shaft 93 handle

Claims (4)

A flame heat retention device for retaining flame heat while passing smoke exhaust in a chimney installed in a stove,
A lower annular portion having an outer peripheral edge having substantially the same diameter as the inner diameter of the chimney and having an opening for smoke exhaust at the center thereof;
An upper disk portion formed approximately the same size as the opening of the lower annular portion and installed at a position above the opening;
Have a plurality of connecting legs for placement within said chimney with connecting at a predetermined distance and the said lower annular portion upper disc portion in the vertical direction,
Each of the connecting legs extends below the lower annular portion, and at the lower end thereof, a rotary type smoke exhaust damper installed in the chimney for adjusting the amount of smoke exhaust is provided. The above-mentioned flame heat retention device, wherein a shaft play fitting notch capable of loosely fitting a shaft is formed .   Each of the connecting legs is formed to extend outwardly and downwardly from the outer peripheral edge of the upper disk portion with a spring property, and a predetermined position of a longitudinal edge portion thereof has an inner peripheral edge of the lower annular portion. The flame heat retention device according to claim 1, wherein a notch for inserting an annular shape into which is inserted is formed. A stove in which a smoke exhaust damper for adjusting the amount of smoke exhaust is disposed in the chimney,
A lower annular portion having an outer peripheral edge having substantially the same diameter as the inner diameter of the chimney and having an opening for smoke exhaust at the center thereof;
An upper disk portion formed approximately the same size as the opening of the lower annular portion and installed at a position above the opening;
A plurality of connecting legs for connecting the lower annular portion and the upper disk portion at predetermined intervals in the up-down direction, and for installing in the chimney;
A stove, wherein the stove is disposed above the smoke exhaust damper, and the connecting leg of the flame heat staying device is loosely fitted to a rotation shaft of the smoke exhaust damper and is installed in the chimney. . A stove in which a flue gas damper for adjusting a flue gas amount is arranged in a chimney, wherein the flame heat retention device according to claim 1 or 2 is arranged above the flue gas damper, and The stove, wherein a connection leg of the flame heat retention device is loosely fitted to a rotation shaft of the smoke exhaust damper and is installed in the chimney.

Images