JP2013036723A - Cinder taking-out device for combustion furnace - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a device for easily taking out cinders of a combustion furnace.SOLUTION: This cinder taking-out device for the combustion furnace is provided with a screw conveyor for discharging the cinders to the outside of a combustion chamber, on a bottom surface of the combustion chamber provided with a door opening for charging a fuel on its side face to easily take out the cinders of the combustion furnace. The screw conveyor includes an approximate U-shaped conveyor case opened to a combustion chamber bottom surface side at a top face side in the extending direction of a screw shaft, and both side edges of the approximate U-shaped conveyor case are connected with the bottom surface of the combustion chamber through an inclined face to make the cinders of the combustion chamber easily drop in the conveyor case.

Description

  The present invention relates to a combustion furnace such as a stove or a heating apparatus for house cultivation, which uses solid matter that mainly generates burnt, such as a wood stove or a coal stove, as a fuel. The present invention relates to a burner taking-out device for a combustion furnace that takes out the gas from the furnace.

  The conventional way to take out the ash and other cocoons generated in this kind of combustion furnace is, for example, in the stove for home use or house cultivation, a spatula (plate-like piece) is attached to the tip of the rod-shaped handle Hold the scraper in your hand and look into the furnace from the door, which is also the fuel inlet of the furnace, that is, the combustion chamber. Also, the bottom of the furnace was scratched and scraped to the door mouth side, that is, the hand side, and scraped out from the door mouth. Hereinafter, the scraping and scraping operations are collectively referred to as an extraction operation.

In this kind of burning out work, it is a work to look into the inside of the furnace where the remaining heat still remains and look into the door opening, so it is a hard work to endure the face burning with the remaining heat. there were.
In order to avoid this face burn, it is only necessary to work after the combustion furnace has cooled sufficiently. However, it takes a relatively long cooling time for the combustion furnace to cool sufficiently. It is not suitable for applications that require continuous combustion, such as heating.

In addition, the ash tends to soar in the work of scraping the bottom of the furnace bottom with a scraping tool. I had to restrict my breathing so that I couldn't breathe into my lungs.

Furthermore, since the bottom of the furnace is generally flat so that the burner can be easily scraped with a scraping tool, it is necessary to apply a spatula to the scraping tool over the entire bottom of the furnace and keep it from the back of the furnace. The scraping process to the side (face side) had to be repeated many times, which required a lot of labor.

According to a first aspect of the present invention, there is provided a screw conveyor for feeding fuel out of the combustion chamber on the bottom surface of the combustion chamber provided with a door for fuel injection on the side surface. And

The invention of claim 2 is characterized in that the screw conveyor is provided with a substantially U-shaped conveyor case in which the upper surface side in the extending direction of the shaft of the screw conveyor is opened to the combustion chamber bottom surface side. Burner extraction device for the combustion furnace.

The invention according to claim 3 is characterized in that both ends of the substantially U-shaped conveyor case are connected to the bottom surface of the combustion chamber via an inclined surface on which the burner in the combustion chamber easily falls to the conveyor case. A burner extraction device for a combustion furnace according to claim 2.

According to a fourth aspect of the present invention, the bottom surface of the combustion chamber has at least two inclined surfaces that connect the both end edges of the substantially U-shaped conveyor case as lower ends so that the burnt in the combustion chamber easily falls on the conveyor case. The burner extracting device for a combustion furnace according to claim 2, wherein the burner is formed.

According to a fifth aspect of the present invention, in the screw conveyor, the shaft of the screw conveyor extends from the one end side of the bottom surface of the combustion chamber to the other end side opposite to the bottom surface of the combustion chamber and extends downward. The burner extraction apparatus for a combustion furnace according to any one of claims 1 to 4, wherein the apparatus is provided as described above.

The invention according to claim 6 is the burner extraction apparatus for a combustion furnace according to claim 5, wherein one end side is a door side of the combustion chamber and the other end side is a back side of the combustion chamber.

The invention according to claim 7 is characterized in that the screw conveyor has an openable / closable lid at an open portion on the upper surface side of the screw conveyor. apparatus.

The invention according to claim 8 is characterized in that the screw conveyor has a detachable drop lid in an open portion on the upper surface side of the screw conveyor, according to any one of claims 1 to 6. Take-out device.

The invention according to claim 9 is characterized in that the lid has at least a mesh or innumerable through-holes that allow the passage of ash, and the burner extracting device for a combustion furnace according to claim 7 or claim 8.

The invention according to claim 10 is characterized in that the screw conveyor has manual drive means or electric drive means, and the burner extraction device for a combustion furnace according to any one of claims 1 to 9.

According to each of the first to ninth aspects of the present invention, the burner such as ash can be removed outside the furnace by driving the screw conveyor. There is no need to work for a long time.

Also, there is no need to scrape the bottom of the furnace bottom with a scraping tool many times, the face is heated by residual heat, ash adheres to the eyes, nostrils and mouth, and the soared ash is sucked into the lungs Therefore, the extraction work can be performed more hygienically and more easily than before, and the efficiency of the extraction work can be improved.

According to the third and fourth aspects of the invention, since the bottom surface of the combustion chamber has an inclined surface that descends toward the conveyor case of the screw conveyor, it is easy to scrape the burning residue onto the screw conveyor.

According to each invention of Claim 5 thru | or 6, since the axis | shaft of a screw conveyor is provided in the sending-out direction in the downward inclination, it is possible to perform the extraction of the burning soot by the screw conveyor, that is, the conveyance of the burning soot efficiently. .

According to the seventh and eighth aspects of the invention, it is possible to reduce adverse effects such as distortion caused by heating of the screw conveyor.

According to the ninth aspect of the present invention, the ash that has naturally dropped through the lid can be eliminated even when the combustion chamber is in operation, so the frequency of removing the ash by stopping the combustion operation is reduced compared to the conventional case. It is possible to improve the continuous operation efficiency.

FIG. 1 is an overall perspective view of a wood heating stove. FIG. 2 is a longitudinal side view along the axial direction of the wood stove. FIG. 3 is a longitudinal side view perpendicular to the axial direction of the wood stove.

Hereinafter, the best mode for carrying out the present invention will be described based on the example of the wood stove.

1 to 3, the illustrated wood stove 1 has a combustion furnace, that is, a combustion chamber 2, which is a main body thereof, in a rectangular parallelepiped shape. There is provided a door port 21 which is an inlet for fuel input and is also an outlet for charcoal, which is a relatively large burner, and unburned residue (not shown). The door 21 includes a door 22 as an open / close door.
Incidentally, reference numeral 23 in the figure denotes a smoke exhaust pipe (chimney). The combustion chamber 2 does not necessarily have a rectangular parallelepiped shape, and may have a substantially spindle shape such as a cylindrical shape or a daruma stove.

On the bottom surface of the combustion chamber 2, there is provided a screw conveyor 3 for sending the burner in the furnace out of the combustion chamber, that is, the furnace.
The screw conveyor 3 is a screw that conveys the material that has fallen between the screw blades in any of the axial directions due to the shaft rotation, that is, in the case of the present embodiment, to send out the burning residue such as charcoal or burning residue. 31 and a substantially U-shaped conveyor case 32 in which the upper surface side in the extending direction of the shaft 33 of the screw which is also the shaft of the screw conveyor 3 is opened to the bottom surface side of the combustion chamber 2.

Both ends of the substantially U-shaped conveyor case 32 may be connected to the bottom surface of the combustion chamber 2 via an inclined surface so that the burnt in the combustion chamber 2 can easily fall into the conveyor case 32 (see FIG. Not shown).
In the example shown in FIGS. 2 and 3, the bottom surface of the combustion chamber 2 is connected with both end edges of the substantially U-shaped conveyor case 32 as the lower ends so that the burner in the combustion chamber easily falls onto the conveyor case. At least two inclined surfaces 24, 24 are formed.

As described above, in order to form the bottom surface of the fuel chamber 2 with at least two inclined surfaces (24, 24), the shaft (33) of the screw conveyor 3 is connected to one end side of the bottom surface of the combustion chamber 2. It is good to extend so that the bottom face of the said combustion chamber 2 may be divided in two toward the other end side on the opposite side to this.

In this embodiment, the shaft (33) of the screw conveyor 3 is the door port 21 with the door port 21 side of the combustion chamber 2 as one end side and the opposite side of the door port 21, that is, the back side of the combustion chamber 2 as the other end side. A discharge port 35 is provided that extends downward from the side toward the back side so as to be inclined downward, and on the lower end side of the inclination, the burner (not shown) conveyed by the blades of the screw 31 is dropped.
As described above, when the screw conveyor 3 is disposed in a downward slope toward the discharge port 35, the conveyance efficiency can be increased.

Furthermore, a lid (36) is provided at the open portion on the upper surface side of the screw conveyor 3 so that the open portion can be freely opened and closed so as to cut off the combustion heat as much as possible to reduce the adverse effect on the screw conveyor 3 due to the combustion heat. Yes.
In the example of the screw conveyor 3 shown in the figure, a removable drop lid 36, in this example a long plate-like lid 36, is placed on the open portion corresponding to the valley between the two inclined surfaces 34, 34. Alternatively, at least a mesh shape that allows the ash to pass therethrough or an infinite number of through holes or the like may be provided as appropriate (not shown) so that the ash generated in the furnace naturally falls onto the screw conveyor 3.

The screw conveyor 3 is provided with a handle 37 at the shaft end of the screw conveyor 3 as manual drive means, but is not limited thereto, and may be driven using electric drive means such as a motor.

The present invention is not limited to a wood stove, a coal stove, or the like, but can be widely used industrially as a burner extraction device for a combustion chamber.

1 Wood stove 2 Combustion chamber (furnace)
21 door 22 kannon door (door)
24 Inclined surface (bottom of combustion chamber)
3 Screw conveyor 31 Screw 32 Conveyor case 33 Shaft (screw)
35 Discharge port 36 Drop lid 37 Handle (manual drive means)

Claims (10)

  A burner extracting apparatus for a combustion furnace, wherein a screw conveyor is provided on a bottom surface of a combustion chamber provided with a door for fuel injection on a side surface thereof to send the burner out of the combustion chamber. 2. A combustion furnace for taking out fuel from a combustion furnace according to claim 1, wherein the screw conveyor includes a substantially U-shaped conveyor case having an upper surface in the extending direction of the shaft of the screw conveyor open to a bottom surface of the combustion chamber. apparatus. 3. A combustion furnace according to claim 2, wherein both end edges of the substantially U-shaped conveyor case are connected to the bottom surface of the combustion chamber via an inclined surface on which the burner in the combustion chamber easily falls onto the conveyor case. Burner extraction device. The bottom surface of the combustion chamber is formed of at least two inclined surfaces that connect the both end edges of the substantially U-shaped conveyor case as lower ends so that the burner in the combustion chamber easily falls on the conveyor case. The burner extraction device for a combustion furnace according to claim 2. The screw conveyor is provided so that the shaft of the screw conveyor extends from the one end side of the bottom surface of the combustion chamber to the other end side opposite to the bottom surface of the combustion chamber and extends downward. The burner extraction device for a combustion furnace according to any one of claims 1 to 4, characterized in that: 6. A burner extracting apparatus for a combustion furnace according to claim 5, wherein one end side is a door side of the combustion chamber and the other end side is a back side of the combustion chamber. The burner removal device for a combustion furnace according to any one of claims 1 to 6, wherein the screw conveyor has a lid that can be opened and closed at an open portion on an upper surface side of the screw conveyor. The burner removal device for a combustion furnace according to any one of claims 1 to 6, wherein the screw conveyor has a detachable drop lid at an open portion on an upper surface side of the screw conveyor. 9. The burner extraction apparatus for a combustion furnace according to claim 7 or 8, wherein the lid has at least a mesh or innumerable through holes allowing passage of ash. The burner removal device for a combustion furnace according to any one of claims 1 to 9, wherein the screw conveyor has manual drive means or electric drive means.

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