JP2571125B2 - Oil cylinder burner cylinder - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mechanism for improving the combustion performance of a double-cylinder combustion cylinder of an oil combustor at a low calorific value.

[Prior art] A conventional oil combustor provided with a double-cylinder combustion cylinder controls the amount of combustion by raising and lowering a core, and in order to improve the combustion performance, the structure of each part of the combustion cylinder and the internal and The characteristics of each combustion cylinder are obtained by variously changing the hole position, the number of holes, and the hole diameter of the outer flame cylinder. Also, variously changing the hole position, the number of holes, and the hole diameter of the inner and outer flame cylinders is a method that is often performed when improving the combustion cylinder for various purposes, but the way of drilling the through holes depends on the purpose. Is different.

[Problems to be Solved by the Invention] In a conventional petroleum combustor having a heat-resistant heat permeable cylinder, even if the amount of combustion can be adjusted by raising and lowering the core, the amount of adjustment of the amount of combustion is very small. In order to perform complete combustion without generating offensive odor, the range of adjustment of the amount of combustion was narrow, and it was limited to the extent that the wick could be slightly moved up and down near the maximum combustion amount with the wick raised. Recently, operators have requested that the amount of adjustment of the combustion amount be increased, and efforts have been made to achieve this.However, when the combustion amount is reduced, the balance of the draft is lost, and the outer flame tube of the primary combustion part is transparent. The combustion gas leaks from the hole to the outer cylinder side, causing a problem of releasing incomplete combustion gas into the room,
Therefore, conventionally, it has not been possible to perform stable combustion in a state where the amount of combustible gas is reduced so much as to be performed in the primary combustion portion.

[Means for Solving the Problems] According to the present invention, even if the combustion gas leaks from the outer flame cylinder to the outer cylinder when the amount of combustion is reduced, this combustion gas is again introduced into the gap between the inner and outer flame cylinders. The combustion is stabilized by returning and recombusting. A double-cylinder combustion cylinder in which the inner flame cylinder 1, the outer flame cylinder 2, and the outer cylinder 3 are arranged concentrically is provided. A heat-resistant heat-transmitting cylinder 3 ', a lower part of which is constituted by an impermeable cylinder 3 ", and an inner edge of a receiving portion 4 of the heat-resistant heat-permeable cylinder 3' provided on the upper part of the impervious cylinder 3" 2 to form a small gap, and a through hole 2 'of the outer flame tube 2 opposed to the heat resistant heat permeable tube 3'.
In a combustion cylinder of an oil combustor having a diameter larger than that of the through hole 2 ″ opposed to the lower opaque cylinder 3 ″, the outer flame tube 2 opposed to the receiving portion 4 is provided with a non-through hole portion. The uppermost through-hole 2 is bored below the receiving portion 4 in the through-hole 2 ″ of the outer flame tube 2 facing the transmitting tube 3 ″, and the uppermost through-hole 2 is opposed to the receiving portion 4. It is formed with a large number of through-holes including a through-hole to be drilled in the holeless portion.

[Explanation of Operation] In the present invention having the above-described configuration, in order to stabilize combustion in which the amount of combustion is reduced by lowering the core, the receiving portion 4 is extended toward the outer flame tube 2 and opposed to the receiving portion 4. A non-through-hole portion is provided in the flame tube 2, and the uppermost through-hole 2 drilled below the receiving portion 4 is formed.
In this example, a large number of through holes are provided by combining holes to be drilled in a non-through hole portion. Therefore, the opening ratio of the through hole 2 of the outer flame tube 2 is not much different from that of the conventional product, and the gap between the receiving portion 4 and the receiving portion 4 is narrow because a portion facing the receiving portion 4 is provided with no through hole. In both cases, more air than necessary does not flow into the gap between the inner and outer flame cylinders, and the uppermost combustion with the wick raised and the combustion state with the wick slightly lowered to slightly reduce the amount of combustion provide normal unchanged combustion.

Further, when the amount of combustion is reduced by further lowering the wick, the combustion portion of the combustible gas is reduced to the primary combustion portion formed by the gap between the inner and outer flame cylinders 1 and 2 corresponding to the impermeable cylinder 3 ", and the combustible gas is reduced. Since the combustion generates a large amount of combustion gas, a problem occurs in which the incomplete combustion gas leaks from the through hole 2 "to the outer cylinder 3 at the portion of the impermeable cylinder 3".

In the present invention, when the air supplied to the gap between the impervious cylinder 3 ″ and the outer flame cylinder 2 loses its destination by narrowing the flow path by the receiving portion 4, the combustion in the gap between the inner and outer flame cylinders 1 and 2 occurs. Overcoming the pressure of the gas, a part of the air in the gap between the impermeable cylinder 3 ″ and the outer flame cylinder 2 flows into the gap from the uppermost through-hole 2 and at this time, the receiving part 4 In the gap with the outer flame tube 2, air ascending on the non-permeable tube 3 ″ side flows in, and the uppermost through hole 2 is formed.
The air rising along the outer flame tube 2 flows together with the combustion gas leaked from the through hole 2 ". Therefore, the incomplete combustion gas leaks from the through hole 2" of the outer flame tube 2. Even if it came out, it was returned to the gap between the inner and outer flame cylinders 1 and 2 and burned, so that the combustion when the core was lowered was stabilized.

Embodiment The configuration will be described below with reference to the drawings showing the embodiments. 1 is an inner flame cylinder, 2 is an outer flame cylinder, 3 is an outer cylinder, and an inner flame cylinder 1 and an outer flame cylinder 2
The outer cylinder 3 is concentrically arranged to form a double-cylinder combustion cylinder. The upper and center portions of the outer tube 3 are formed by a heat-resistant heat-transmitting tube 3 ', and the lower portion is formed by an impermeable tube 3 ". A receiving portion extending toward the tube 2, an inner edge of the receiving portion 4 forms a small gap with the outer flame tube 2, and a heat-resistant heat-permeable tube 3 ′ is mounted on the receiving portion 4. doing.

Reference numeral 9 denotes a core whose tip is viewed into the gap between the inner and outer flame cylinders 1 and 2. Reference numeral 10 denotes a core accommodating cylinder for holding the core 9, and the inner and outer flame cylinders 1 and 2 correspond to the core accommodating cylinder 10. It is mounted. 11 is the core storage cylinder 10
The air rectifying plate is provided with a plurality of small holes that cover the lower end of the gap between the outer cylinder 3 and the outer flame cylinder 2.

1 'is a through hole provided in the inner flame tube 1;
And the through hole of the outer flame tube 2 is an impermeable tube 3 ″.
The outer flame tube 2, which is a portion facing the heat-resistant heat permeable cylinder 3 ′, rather than the through hole 2 ″ at the lower part of the outer flame tube 2, which is a portion facing the outer flame tube 2,
The central and upper through holes 2 'have a large diameter.

The wick 9 held in the wick accommodating cylinder 10 is raised by a wick elevating device (not shown) and is projected from the gap between the inner and outer flame cylinders 1 and 2, and the wick 9 is ignited by an appropriate method such as matching. The gaseous oil and gas from the inner and outer flame cylinders 1 below the receiving part 4
A through hole 1 'of the inner flame tube 1 and a through hole 2 "of the outer flame tube 2 in the two gaps;
High-molecular-weight petroleum gas is thermally decomposed into low-molecular-weight combustible gas while performing primary combustion while receiving air supply from.

Then, the combustible gas rises in the gap between the inner and outer flame cylinders 1.2,
In the gap between the inner and outer flame cylinders 1 and 2 above the receiving portion 4, air is supplied from the through-hole 1 'of the inner flame cylinder 1 and the through-hole 2' of the outer flame cylinder 2 to burn the combustion flame. It extends to the upper part of the gap between the inner and outer flame cylinders 1 and 2, and the through-hole 2 'corresponding to the combustion part has a higher opening ratio than the through-hole 2 "corresponding to the primary combustion part to promote combustion. The outer flame tubes 1 and 2 are heated and glow red.

When the wick 9 is lowered and the amount of combustion is reduced, the upper end of the combustion flame falls into the gap between the inner and outer flame cylinders 1 and 2. When this fall is small, complete combustion occurs, but the operator drops the wick 9 extremely. When the upper end of the combustion flame falls to the middle of the gap between the inner and outer flame cylinders 1.2, incomplete combustion occurs.

That is, when the upper end position of the combustion flame is lowered, the draft decreases, and the combustible gas formed in the primary combustion section cannot rise to the combustion section above the receiving section 4, and the combustible gas in the primary combustion section below the receiving section 4 does not. Combustion starts to take place. The combustion of this combustible gas is rapidly decomposed by heat, heat generation is accelerated, and
Since a large amount of combustion gas is generated, a part of the unburned gas passes through the through hole 2 ″ at the lower portion of the outer flame tube 2 as shown in FIG.
The fuel gas leaks to the side, and the leaked combustion gas as it is rises through the gap between the outer cylinder 3 and the outer flame cylinder 2 and is discharged, thereby deteriorating the exhaust gas performance and causing odor.

Numeral 2 is a through hole located at the uppermost part of the through hole 2 "of the outer flame tube 2 facing the opaque tube 3", and the inner edge of the receiving portion 4 extends toward the outer flame tube 2 to form a small gap. And the vicinity of the outer flame tube 2 facing the receiving portion 4 forms a through holeless portion,
The uppermost through-hole 2 is located immediately below the non-through-hole portion facing the receiving portion 4 and includes a through-hole to be drilled in the non-through-hole portion.

For this reason, since the uppermost through-hole 2 is formed more densely than the other through-holes 2 ″, air controlled by the air straightening plate 11 allows the air controlled by the air straightening plate 11 to communicate between the outer cylinder 3 and the outer flame cylinder 2. The air that flows into the gap and rises in the gap is narrowed in the flow path by the receiving part 4, loses its place of being visited, is pressed toward the outer flame cylinder 2, and the inner / outer flame cylinder 1.
2 and flows into the gap from the uppermost through-hole 2 below the receiving portion 4 by overcoming the pressure of the combustion gas in the gap.

The air which rises on the side of the impermeable cylinder 3 ″ in the gap between the outer cylinder 3 and the outer flame cylinder 2 flows through the gap between the receiving portion 4 and the outer flame cylinder 2 and rides along this flow along the outer flame cylinder 2. The ascending air smoothly flows into the gap between the inner and outer flame cylinders 1 and 2 because the uppermost through-hole 2 is opened, and the combustion gas leaked from the through-hole 2 "is also taken up by this air flow. It again flows into the gap between the inner and outer flame cylinders 1 and 2 and performs reburning. Also, as shown in FIG.
If the combustion is stabilized in the state where the temperature is lowered, even if the core is suddenly raised from the state where the core is lowered, the combustion flame does not greatly rise.

5 is a flame spreader installed above the top plate of the inner flame tube 1, 6
Reference numeral 7 denotes an upper flame tube arranged on the outer periphery of the flame spreader 5, 7 denotes a combustion chamber bottom plate having an upper flame tube 6 mounted on an outer end thereof and an inner edge of which is viewed above the gap between the inner and outer flame tubes 1 and 2. The outer combustion chamber bottom plate 7 is attached to the upper end of the outer flame cylinder 2 and holds the upper end of the heat-resistant transmission cylinder 3 ′ forming the outer cylinder 3. Further, the upper flame tube 6 and the combustion chamber bottom plate 7 form a secondary combustion chamber which is a combustion space for the flame spreader 5.

The secondary combustion chamber rises in the gap between the outer cylinder 3 and the outer flame cylinder 2, and a large amount of air supplied from the upper small hole 2 ′ and the flame spreader 5.
The inner and outer flame cylinders 1
The combustible gas rising from the two gaps is completely burned by the white and yellow flame combustion. When the wick 9 is raised to the highest position, the combustion flame is formed on the side of the flame spreader 5.

Numeral 8 is an air hole formed in the bottom plate of the combustion chamber near the upper flame tube 6, which forms an air flow along the inner surface of the upper flame tube 6 as required. 6 is not touched.

[Explanation of Effect] As described above, the present invention can burn the same as a conventional combustion cylinder in a state where the amount of combustion is slightly reduced from the maximum combustion with the wick raised. Furthermore, even if the combustion gas leaks from the through-hole 2 ″ of the outer flame cylinder 2 to the outer cylinder 3 side at the portion facing the impermeable cylinder 3 ″ in a state where the amount of combustion is reduced by lowering the core,
This gas is again supplied to the inner and outer flame cylinders 1.2 through the uppermost through-hole 2.
Since the gas flows into the gap and recombustes, no odor is generated.

Therefore, the present invention has achieved stable micro combustion without deteriorating the combustion gas performance, and has completed a superior invention capable of largely controlling the combustion amount.

[Brief description of the drawings]

FIG. 1 is a sectional view of a combustion cylinder portion of an oil combustor according to an embodiment of the present invention, and FIG. 2 is a detailed sectional view in which the essential parts are enlarged. 1 ... inner flame tube, 2 ... outer flame tube, 2 '... through-hole, 2 "...
Through-hole, 2 ... Top-most through hole, 3 ... Outer cylinder, 3 '... Heat-resistant heat-permeable cylinder, 3 "... Impermeable cylinder, 4 ... Receiving part

Claims (1)

(57) [Claims] 1. A double-cylinder combustion cylinder in which an inner flame cylinder 1, an outer flame cylinder 2, and an outer cylinder 3 are concentrically arranged, the upper part of which is a heat-resistant heat-permeable cylinder 3 ' , The lower part is composed of an opaque cylinder 3 ″,
The inner edge of the receiving portion 4 of the heat-resistant heat-transmitting cylinder 3 ′ provided above the non-transparent cylinder 3 ″ is extended toward the outer flame tube 2 to form a small gap. In a combustion cylinder of an oil-fired combustor in which the diameter of the through hole 2 ′ of the facing outer flame tube 2 is larger than that of the through hole 2 ″ of the lower non-permeable cylinder 3 ″, 2 is provided with a non-through-hole portion, and in the through-hole 2 "of the outer flame tube 2 facing the non-transmissive tube 3", the uppermost through-hole 2 is drilled below the receiving portion 4; A combustion cylinder for an oil combustor, characterized in that the through-hole 2 is formed of a large number of through-holes including a through-hole to be drilled in a non-through-hole portion facing the receiving portion 4.