JPH09210366A - Combustion cylinder structure for oil stove - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce CO in exhaust gas and to perform the purification of the exhaust gas by disposing cylindrical secondary combustion expediting means of predetermined height at the upper side of a retaining member in the combustion structure of an oil stove supported at the outer cylinder disposed on the outer periphery of an outside flame cylinder by the member. SOLUTION: The combustion cylinder 1 comprises a cylindrical inside flame cylinder 2 formed with a plurality of pores 4 and slits for introducing primary air into a combustion chamber 3. An outside flame cylinder 10 for forming the chamber 3 is disposed to the cylinder 2 on the outer periphery of the cylinder 2. A cylindrical heat resistant glass cylinder 17 is disposed on the outer periphery of the cylinder 10, and the radiation heat of this read heated part is effectively utilized to prevent the excess air from being introduced from the exterior. The cylinder 17 is supported by a glass retaining member 18. An outside flame cylinder top ring 19 is disposed as safe cylindrical secondary combustion expediting means of a predetermined height at the upper side of a horizontal placing surface 18a of the member 18.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an outer cylinder (heat-resistant glass cylinder) having an inner flame cylinder and an outer flame cylinder for forming a combustion chamber, and the outer flame cylinder being spaced apart from the outer flame cylinder. The present invention relates to a combustion cylinder structure for an oil stove such as a core up-down type supported by a glass pressing member from above.

[0002]

2. Description of the Related Art Conventionally, as a structure of a combustion cylinder (so-called chimney) of an oil stove (including both natural ventilation type open type and natural convection type open type) that uses kerosene (white kerosene) as a fuel, it is as shown in FIG. There is a structure.

That is, the primary air is introduced into the combustion chamber 41 from the inside of the cylinder.
And a cylindrical inner flame cylinder 43 having a plurality of pores 42 and slits (not shown) for guiding the inner flame cylinder 4
3, an outer flame cylinder 44 made of punching metal that is disposed outside the inner flame cylinder 43 to form the combustion chamber 41, a lower vent hole plate 45 disposed inside the lower portion of the inner flame cylinder 43, and the inner flame cylinder described above. Upper ventilation plate 47 disposed on top of 43 and having ventilation holes 46
An upper plate member 48 fixed to the upper surface of the upper vent hole plate 47, a lower outer cylinder 49 arranged on the lower outer peripheral portion of the outer flame cylinder 44, and an outer periphery of the outer flame cylinder 44. Lower part outer cylinder 4
9, a heat-resistant glass tube 50, a glass pressing member 51 for supporting the heat-resistant glass tube 50 from the upper side, a cross pin 52 combined in a cross shape in plan view, and a rivet 53 for the outer tube 49. And a grip member 54 attached by using a cylindrical core member 55 that is vertically adjustable (fire power can be adjusted) disposed below the combustion chamber 41, and absorbs kerosene by a battery ignition means or the like. Is a combustion cylinder structure of an oil stove configured to ignite and burn kerosene in the combustion chamber 41.

In this conventional combustion cylinder structure, the above kerosene can be almost completely burned in the chimney having good air permeability, specifically, in the combustion chamber 41. (Combustion), as a result of actually measuring the carbon monoxide concentration (CO value) in the exhaust gas, there was a problem that sufficient exhaust gas purification was not achieved at 8 to 10 ppm.

[0005]

According to the first aspect of the present invention, the secondary combustion promoting means, which has a predetermined height and is cylindrical, is provided above the pressing member, and the secondary combustion promoting means is provided. The purpose of the present invention is to provide a combustion cylinder structure of an oil stove that can achieve reburning (secondary combustion) by the combustion promoting means, significantly reduce the concentration of carbon monoxide in exhaust gas, and achieve exhaust gas purification. And

According to a second aspect of the present invention, in addition to the object of the first aspect of the invention, the above-mentioned secondary combustion promoting means is formed in a non-perforated cylindrical shape having no hole in the cylinder wall. By doing so, it is an object of the present invention to provide a combustion cylinder structure of an oil stove that can achieve the above object only by additionally arranging secondary combustion promoting means having a simple structure to the existing chimney structure.

According to a third aspect of the present invention, in addition to the object of the first or second aspect of the present invention, the mounting surface of the pressing member on which the above-mentioned secondary combustion promoting means is arranged is non-perforated. By forming into a shape, the step of piercing the mounting surface of the pressing member can be omitted, the man-hours and cost of manufacturing the pressing member can be reduced, and the mechanical strength and rigidity of the pressing member can be ensured while re-combusting. In view of the above, an object of the present invention is to provide a combustion cylinder structure of an oil stove capable of significantly reducing the carbon monoxide concentration in exhaust gas.

According to a fourth aspect of the present invention, in addition to the object of the first or second aspect of the invention, the holding surface on which the secondary combustion promoting means is arranged is provided with a hole. By forming it into a shape, the flow of secondary air from the perforated shape part into the secondary combustion promoting means is made good, the reburnability is further improved, and the concentration of carbon monoxide in the exhaust gas is reduced. It is an object of the present invention to provide a combustion cylinder structure of an oil stove that can be further reduced.

[0009]

The invention according to claim 1 of the present invention is a combustion cylinder structure of an oil stove in which an outer cylinder arranged on the outer peripheral portion of the outer flame cylinder is supported by a pressing member. It is characterized by a combustion cylinder structure of an oil stove in which a cylindrical secondary combustion promoting means of a predetermined height is arranged above the pressing member.

According to a second aspect of the present invention, in addition to the configuration of the first aspect of the invention, the secondary combustion promoting means is formed into a non-perforated cylindrical shape having no hole in the cylinder wall. It is characterized by the combustion cylinder structure of an oil stove.

According to the invention of claim 3 of the present invention, in addition to the structure of the invention of claim 1 or 2, the mounting surface of the pressing member on which the secondary combustion promoting means is arranged is non-perforated. It is characterized in that it is a combustion cylinder structure of the oil stove formed in the.

According to the invention of claim 4 of the present invention, in addition to the structure of the invention of claim 1 or 2, the mounting surface of the pressing member on which the secondary combustion promoting means is disposed is formed into a perforated shape. It is characterized in that it is a combustion cylinder structure of the oil stove formed in the.

[0013]

According to the invention described in claim 1 of the present invention, since the cylindrical secondary combustion promoting means having a predetermined height is disposed above the pressing member, the secondary combustion is performed. Exhaust gas after primary combustion is re-combusted by the promotion means (secondary combustion)
As a result, there is an effect that the carbon monoxide concentration in the exhaust gas, that is, the value of CO can be significantly reduced to achieve exhaust gas purification.

According to the invention of claim 2 of the present invention,
In addition to the effect of the invention described in claim 1, the secondary combustion promoting means is formed in a non-perforated cylindrical shape having no holes in the cylinder wall, so that the non-perforated cylinder allows the cylinder to be extended from the cylinder outer peripheral direction. The above-mentioned effect can be obtained only by additionally disposing the secondary combustion promoting means having a simple structure with respect to the existing chimney structure while preventing the inflow of excess air into the inside.

According to the invention of claim 3 of the present invention,
In addition to the effect of the invention described in claim 1 or 2, the mounting surface of the holding member on which the secondary combustion promoting means is arranged is formed in a non-perforated shape. By omitting the punching step, the manufacturing process and cost of the pressing member can be reduced, and the mechanical strength and rigidity of the pressing member can be ensured, and the secondary combustion promoting means described above can be used to re-combust the exhaust gas. There is an effect that the carbon monoxide concentration can be significantly reduced.

According to the invention of claim 4 of the present invention,
In addition to the effect of the invention described in claim 1 or 2, the mounting surface of the pressing member on which the above-mentioned secondary combustion promoting means is arranged is formed in a perforated shape. There is an effect that the flow of the secondary air into the secondary combustion promoting means is made favorable, the re-combustion performance is further improved, and the carbon monoxide concentration in the exhaust gas can be further reduced.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below in detail with reference to the drawings. The drawing shows the structure of a combustion cylinder (chimney) of an oil stove. In FIG. 1, the combustion cylinder 1 which is applied to both the naturally ventilated open oil stove and the natural convection open oil stove has a cylindrical shape inside. Is provided with a plurality of pores 4 and a plurality of slits for guiding the primary air from the inside of the outer inner flame cylinder to the combustion chamber 3.

Further, a substantially donut-shaped lower vent hole plate 6 having a vent hole 5 is fixed to the inner circumference of the lower part of the above-mentioned inner flame tube 2, while a plurality of vent holes 7 are provided in the upper part of the inner flame tube. The upper vent plate 8 having the
An upper plate member 9 is integrally attached to the upper surface of the.

An outer flame cylinder 10 which forms a combustion chamber 3 between the inner flame cylinder 2 and the inner flame cylinder 2 is arranged on the outer peripheral portion of the inner flame cylinder 2. The outer flame cylinder 10 is formed into a cylindrical shape by punching metal having a large number of openings 11, ... And an annular rib 12 is integrally formed in the lower part thereof.

On the outer periphery of the lower portion of the outer flame cylinder 10 described above, a substantially cylindrical lower outer cylinder 13 is disposed separately, and a cross pin 14 which is combined in a cross shape when viewed from above is arranged on the lower outer cylinder 13. A handle member 16 extending outward is attached to the outer surface of the lower outer cylinder 13 by using a rivet 15.

In the glass tube mounting portion 13a formed on the upper part of the lower outer tube 13, a cylindrical heat-resistant glass tube 17, which is spaced apart from the outer flame tube 10, is vertically arranged. ,
This heat-resistant glass cylinder 17 makes effective use of the radiant heat of the red heat part,
In addition, the heat-resistant glass cylinder 17 is configured to prevent excess air from flowing in from the outside, and the heat-resistant glass cylinder 17 is supported from above by a ring-shaped glass pressing member 18.

Moreover, the glass holding member 18 has a predetermined height H above the horizontal mounting surface 18a (see FIG. 2 in which the cross pin 14 and the handle 16 are not shown) and has a safe cylindrical shape (on the cylinder wall). An outer flame tube top ring 19 is disposed as a secondary combustion promoting means having a non-cylindrical shape (without holes).

As shown in FIG. 3, the outer flame tube top ring 19 has two inverted L-shaped notches 20 at the bottom thereof, which have an opening angle of 180 degrees or three which have an opening angle of 120 degrees.
(However, in FIG. 3, only one is shown for convenience of illustration.)
The cut-and-raised tongue piece 18b formed at the corresponding position of the glass pressing member 18 can be detachably mounted and locked with one touch.

The outer flame tube top ring 19 is made of a heat resistant metal such as stainless steel, and its height H is set to 3 to 8 cm (a height at which a good reburning effect can be obtained), preferably 6 cm. That is, if the height H is less than 3 cm, a good reburning effect cannot be obtained, and if the height H exceeds 8 cm, the top plate of the oil stove body is overheated, so To do. The lower part of the outer peripheral surface of the outer flame tube top ring 19 is regulated by the stepped portion 18b of the glass pressing member 18 so as not to vibrate during combustion.

On the other hand, a large number of secondary air circulation holes 21 ... Are formed in the horizontal mounting surface 18a of the glass pressing member 18 described above. In the embodiment shown in FIG. 2, a predetermined diameter (for example, the outer shape 97.
For 3 mm, a total of 36 circular flow holes 21 having a diameter of 3.8 mm (hole area 430 mm ² ) are formed.

In FIG. 1, reference numeral 22 denotes a cylindrical core member which is arranged in the lower opening of the combustion chamber 3 so as to be vertically adjustable (fire power adjustment). The core member 22 sucks kerosene (for example, JIS No. 1 kerosene). The kerosene is ignited by, for example, a battery igniting means, and the kerosene is burned in the combustion chamber 3.

The heat-resistant glass tube 17 is formed of a heat-resistant glass material such as borosilicate glass, the core member 22 is formed of an ordinary tube core member such as cotton or an ordinary tube member with a reinforcing metal fitting, and the other members. Each element 2, 6, 8, 9, 1
0, 13, 14, 15, 16, 18, and 19 are made of heat-resistant metal such as stainless steel (so-called SUS).

The combustion cylinder structure thus constructed (structure having the outer flame cylinder top ring 19 and the secondary air circulation hole 21)
Excluding the secondary air circulation hole 21 from the example product 1 of Example 1 and the structures of FIGS. 1 and 2, the mounting surface 18 of the glass pressing member 18 is removed.
For the purpose of comparing the performances of the example product 2 in which a has a non-perforated shape and the conventional product corresponding to FIG. 4 (structure having no outer flame tube top ring 19) under the same thermal power condition ( High combustion under the same conditions such as the same fuel used, the same height of the core, and the same calorific value) was performed, and the carbon monoxide concentration (CO value) in the exhaust gas was measured. Table 1] shows.

[0029]

[Table 1]

As is clear from Table 1 above, in the combustion cylinder structure provided with the outer flame cylinder top ring 19 of this embodiment, the exhaust gas after primary combustion is regenerated by this outer flame cylinder top ring 19. Since it can be burned (secondary combustion), the carbon monoxide concentration (CO value) in the exhaust gas can be greatly reduced compared to the conventional product that does not have the outer flame tube top ring 19 at all. The cleanliness (purification degree) of can be greatly improved. Although the secondary air circulation hole of the conventional product has a hole area of about 302 mm ² , the outer flame tube top ring 1
Since it does not have 9, the exhaust gas purification rate is poor.

As described above, since the cylindrical secondary combustion promoting means (see the external flame tube top ring 19) having the predetermined height H is arranged above the pressing member (see the glass pressing member 18), This secondary combustion promoting means (outer flame tube top ring 19
The exhaust gas after the primary combustion can be re-combusted (secondary combustion) by the reference), and as a result, the carbon monoxide concentration in the exhaust gas, that is, the value of CO, can be significantly reduced, and exhaust gas purification (cleanliness (Improvement) can be achieved.

Further, by forming the above-mentioned secondary combustion promoting means (see the external flame cylinder top ring 19) into a non-perforated cylindrical shape having no hole (ventilation hole) in the cylinder wall, Simply by additionally arranging the secondary combustion promoting means (see external flame tube top ring 19) of a simple structure to the existing chimney structure while preventing the excess air from flowing into the cylinder from the outer circumferential direction of the cylinder. The above effects can be obtained.

Further, the mounting surface 18a of the holding member (see the glass holding member 18) on which the above-mentioned secondary combustion promoting means (see the outer flame tube top ring 19) is arranged is formed in a non-hole shape (see Table 1). Since the pressing member (see the glass pressing member 18) for the mounting surface 18a of this pressing member (see the glass pressing member 18) is omitted, the man-hours and costs for manufacturing the glass pressing member 18 can be reduced, and the pressing member 18 can be reduced. It is possible to re-combust by the above-mentioned secondary combustion promoting means (see the outer flame cylinder top ring 19) and to significantly reduce the carbon monoxide concentration in the exhaust gas while ensuring the mechanical strength and rigidity of effective.

In addition, the mounting surface 18a of the holding member (see the glass holding member 18) on which the above-mentioned secondary combustion promoting means (see the outer flame tube top ring 19) is arranged is formed in a perforated shape (Table 1). No. 1), the flow of secondary air from this perforated portion (see secondary air circulation hole 21) into the above-mentioned secondary combustion promoting means (see external flame tube top ring 19) is good. There is an effect that the value of the carbon monoxide concentration CO in the exhaust gas can be further reduced by further normalizing and further improving the reburning performance.

In the correspondence between the constitution of the present invention and the above-mentioned embodiment, the outer cylinder of the present invention is the heat-resistant glass cylinder 1 of the embodiment.
7, the pressing member corresponds to the glass pressing member 18, the secondary combustion promoting means corresponds to the outer flame tube top ring 19, and the perforation of the mounting surface corresponds to the secondary air flow. Hole 21
However, the present invention is not limited to the configuration of the above-described embodiment.

[Brief description of drawings]

FIG. 1 is a half sectional view showing a combustion cylinder structure of an oil stove according to the present invention.

FIG. 2 is a schematic enlarged plan view of FIG.

FIG. 3 is a perspective view of an outer flame tube top ring.

FIG. 4 is a half-cut sectional view showing a combustion cylinder structure of a conventional oil stove.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... External flame cylinder 17 ... Heat-resistant glass cylinder 18 ... Glass pressing member 18a ... Mounting surface 19 ... External flame cylinder top ring 21 ... Secondary air circulation hole

Claims (4)

[Claims] 1. A combustion cylinder structure of an oil stove in which an outer cylinder arranged on an outer peripheral portion of an outer flame cylinder is supported by a pressing member, the cylinder having a predetermined height above the pressing member and having a predetermined height. Combustion cylinder structure of oil stove provided with secondary combustion promoting means. 2. The combustion cylinder structure for an oil stove according to claim 1, wherein the secondary combustion promoting means is formed in a non-perforated cylindrical shape having no holes in the cylinder wall. 3. The combustion cylinder structure for an oil stove according to claim 1 or 2, wherein the mounting surface of the holding member on which the secondary combustion promoting means is arranged is formed in a non-hole shape. 4. The combustion cylinder structure for an oil stove according to claim 1 or 2, wherein the mounting surface of the pressing member on which the secondary combustion promoting means is arranged is formed in a perforated shape.