JPH05651Y2 - - Google Patents

Description

[Detailed explanation of the invention] [Industrial application field] This invention is suitable for indirect or direct use in vehicles equipped with internal combustion engines, vehicles such as trailers, domestic rooms, drying rooms, offices, etc. The present invention relates to a combustor that can be applied to heating equipment, drying equipment, etc.

[Conventional technology]

Conventionally, for example, to heat the interior of a vehicle, cooling water from the internal combustion engine is taken out through hot water piping, guided to a heater device, where heat is exchanged indirectly, and warm air is sent into the vehicle to heat the interior of the vehicle. There is something.

Furthermore, there is a heating device for a vehicle (see, for example, Japanese Patent Application Laid-Open No. 60-252018) that heats the room by the amount of heat generated by burning fuel in a burner, ie, a combustor, regardless of the internal combustion engine.

Furthermore, an engine warm-up device (for example, the Japanese Patent Laid-Open No. 61−79864
(See Publication No.).

As prior art, for example, Japanese Patent Application Laid-open No. 160312/1983 (Japanese Patent Application No. 160312/1983) filed by the present applicant
281162) and Japanese Patent Application Laid-Open No. 62-69009 (Patent Application No.
60-207330).

What is described in Japanese Patent Application Laid-Open No. 62-69009 will be summarized with reference to FIG. In the combustor shown in FIG. 3, the vaporizing chamber 54 and the combustion chamber 56, which are formed by a partition plate 52 inside the combustion tube 51, are arranged horizontally and are configured horizontally. A partition plate 52 having a plurality of notched passages 53 on the periphery defines a vaporization chamber 54 and an air introduction hole 55 in the peripheral wall.
The fuel vaporizer is partitioned into a combustion chamber 56 having a combustion chamber 56, has a nozzle 57 for ejecting vaporized fuel that opens into the vaporization chamber 54, and has fins 58 on the outer peripheral surface. In the figure, 59 indicates a lid plate.

Further, the structure described in Japanese Patent Application Laid-open No. 160312/1988 will be summarized with reference to FIG. In the rapid heating combustor shown in FIG. 4, a vaporization chamber 67 and a combustion chamber 68 formed by a honeycomb passage 69 in a combustion tube 62 are horizontally arranged and configured horizontally, and an air duct Combustion cylinder 6 provided in 61
A carburetor 64 is disposed obliquely within the fuel tank 2 and has a jet port 63 for spouting fuel from an upper portion 65. Furthermore, the combustion tube 62 has a honeycomb passage 69.
partitioned into a vaporization chamber 67 and a combustion chamber 68,
At the upstream end of the vaporization chamber 67, an outer peripheral wall 66 having an air introduction hole is attached.

[Problem that the invention attempts to solve]

However, for indoor heating using the cooling water of the internal combustion engine, the temperature of the cooling water rises slowly, so it takes a long time for the heater body to send out hot air, and during that time the heater There is almost no heating function.

In addition, for automotive heating systems or engine warm-up systems that use a combustor independent of the internal combustion engine, combustion cycles, exhaust gas processing, etc. require time and effort, and complex mechanisms and control devices are required. There are problems such as:

Furthermore, the above-mentioned combustor as a prior art has a problem in that fuel accumulates around the combustion tube of the combustor, particularly at the bottom, due to incomplete combustion or insufficient vaporization of the fuel.

In the rapid heating combustor shown in FIG.
The vaporization chamber 67 and the combustion chamber 68 are of a horizontal type arranged horizontally to each other, and the unvaporized liquid fuel mixed with the vaporized fuel and flowing out from the vaporized fuel injection outlet 63 and the vaporized fuel in the vaporizer 64 are The vaporized fuel ejected from the jet port 63 comes into contact with the low-temperature combustion tube 62 and the outer peripheral wall 66, and the fuel liquid in which the vaporized fuel is turned into oil droplets drips onto the bottom of the combustion tube 62.

Moreover, since the outer circumferential wall 66 is cooled by the low-temperature intake air, there is a problem in that the fuel that has turned into oil droplets cannot be vaporized and flows out of the combustion tube 62. .

In addition, the combustor equipped with the fuel vaporization device shown in FIG. The problem is that the vaporized fuel comes into contact with the cover plate 59, which is cooled, and the vaporized fuel turns into oil droplets, causing a similar problem.

Therefore, the purpose of this invention is to solve the above problems.In a combustor that vaporizes fuel at a rapid rate and burns the vaporized fuel, the fuel is mixed with the vaporized fuel and ejected from the vaporizer. The liquid and vaporized fuel collide with the lid plate, etc., and the fuel liquid is liquefied. Instead of flowing out from the combustion tube of the combustor, it is temporarily retained in the partition plate and vaporized again by the combustion heat of the combustion gas. It is an object of the present invention to provide a combustor that can vaporize fuel and achieve complete combustion.

[Means for solving problems]

In order to achieve the above object, this invention is constructed as follows. That is, this invention includes a combustion tube, a partition plate that partitions the combustion tube into a vaporization chamber and a combustion chamber, and has an opening that communicates the vaporization chamber and the combustion chamber, and a partition plate that passes through the combustion chamber and that connects the partition. In a combustor having a vaporizer that opens a fuel injection port to the vaporization chamber through a plate, the combustion tube is arranged vertically, and the vaporization chamber is provided in the upper part of the combustion tube and the combustion chamber is provided in the lower part of the combustion tube. The present invention relates to a combustor, characterized in that the partition plate has an upwardly protruding portion located along a peripheral edge of the partition plate.

Further, in this combustor, an air introduction hole is formed in the combustion cylinder that forms the fuel chamber.

Furthermore, this combustor is provided with an ignition glow plug in the vaporization chamber.

Further, in this combustor, the vaporizer has a vaporizing glow plug built into the vaporizing pipe.

Further, in this combustor, a combustion gas outlet is formed at the bottom of the combustion chamber.

[Effect]

The combustor according to this invention is constructed as described above and operates as follows. That is, in this combustor, a vertical combustion tube is partitioned into a vaporization chamber and a combustion chamber by a partition plate with an opening, and the vaporization chamber is arranged in the upper part of the combustion tube and the combustion chamber is arranged in the lower part. ,
Since the upward protrusion is provided along the peripheral edge of the partition plate, the liquid fuel can be vaporized rapidly, the vaporized fuel can be immediately combusted, and it can be used for quick heating, etc.

Furthermore, since the combustion tube is vertical, it is possible to generate a good mixture of vaporized fuel and air, and the liquid fuel that has not been vaporized is not ejected from the fuel injection pipe mixed with the vaporized fuel. Even if the liquid fuel is spouted from the nozzle, the partition plate acts as a type of saucer, or a receiving tray, and the fuel can be retained, so the fuel liquid will temporarily remain on the partition plate and combustion will not occur. When it becomes active, it immediately vaporizes and becomes vaporized fuel, which can be completely combusted.

In addition, oil droplets that are liquefied when the vaporized fuel collides with the combustion tube and its lid plate similarly remain temporarily on the partition plate, and immediately vaporize into vaporized fuel when combustion becomes active. Furthermore, since the ignition means is constituted by an ignition glow plug and the vaporization device has a built-in vaporization glow plug, the liquid fuel is vaporized reliably and quickly, and ignition errors hardly occur.

〔Example〕

An embodiment of the combustor according to this invention will be described below with reference to FIG.

In FIG. 1, a combustor according to the invention is indicated generally by the reference numeral 1. In FIG. This combustor 1
For example, air taken into a diesel engine or gasoline engine through an air cleaner, a separate air cleaner, etc., or air taken directly from outside or indoors is introduced through the air intake pipe 12, and combustion gas is introduced into the combustion gas delivery pipe 13. The heat exchanger is sent out directly into the room, or sent out to a heat exchanger (not shown) installed downstream.

In the case of sending the heat to a heat exchanger installed downstream, the heat exchanger may be installed in series downstream of the combustor 1, or may be installed on the outer periphery of the combustor 1, of course.

The combustor 1 is composed of a ceramic combustion tube 11, a metal outer housing 14 that covers the outer periphery of the combustion tube 11, and a metal lid plate 5 that seals one end of the combustion tube 11 and the outer tube housing 14. . A metal combustion gas delivery pipe 13 is provided at the lower end of the outer housing 14, and a metal air intake pipe 12 is provided on the side of the cylindrical portion of the outer housing 14. .

As shown in FIG. 2, the inside of the combustion tube 11 is partitioned into a vaporization chamber 7 and a combustion chamber 6 by a partition plate 8 having a plurality of cutout passages 15, which are openings, at its peripheral edge. Therefore, the cutout passage 15 of the partition plate 8 is
The vaporization chamber 7 and the combustion chamber 6 are communicated with each other.

The combustion tube 11 is of a vertical type, that is, installed vertically, and has the vaporization chamber 7 disposed in the upper part of the combustion tube 11 and the combustion chamber 6 disposed in the lower part. Combustion chamber 6
A large number of air introduction holes 17 are formed in the lower circumferential wall of the combustion cylinder 11 that constitutes the combustion cylinder 11 . Combustion cylinder 11
An annular space 27 in which combustion air swirls is formed between the outer cylinder housing 14 and the outer cylinder housing 14 . A combustion gas outlet 18 is formed at the end of the combustion chamber 6 on the opposite side from the vaporization chamber 7, that is, at the bottom.

The vaporizer 2 is located downstream of the combustion chamber 6, that is, in the combustion chamber 6.
It is installed so as to extend obliquely from the lower part of the partition plate 8 toward the communication hole 19 formed in the center of the partition plate 8. Further, an ignition glow plug 4 which is a heating plug is installed in the vaporization chamber 7.

Regarding the vaporization device 2, a metal vaporization pipe 2
A vaporizing glow plug (not shown), which is a heating plug, is built into the 0. vaporizing pipe 2
A terminal 21 for supplying current to a resistance wire (not shown) made of tungsten embedded in the silicon nitride member of the vaporizing glow plug is located at the lower end of the vaporizing glow plug.

At the upper end of the vaporizing pipe 20, the vaporizing pipe 20
A jetting pipe 22 having a smaller diameter is attached, and a jetting port 23 is formed at the tip of the jetting pipe 22. The vaporization pipe 20 is provided with a fuel supply pipe 24 . Furthermore, heat receiving fins 28 are formed on the outer peripheral surface of the vaporizing pipe 20.

The jetting pipe 22 passes through a communication hole 19 which is an opening formed in the partition plate 8 , and the jetting port 23 formed at the tip of the jetting pipe 22 is connected to an ignition glow installed in the vaporization chamber 7 . It is installed near the plug 4.

The combustor 1 according to this invention has the above-mentioned structure, and is particularly characterized by the following structure. In this combustor, a combustion chamber 7 and a combustion tube 11 constituting a combustion chamber 6 are arranged substantially vertically, that is, vertically, and the vaporization chamber 7 is located above the combustion chamber 6. The vaporization chamber 7 is located in the upper part of the fuel cell 11, and the combustion chamber 6 is located in the lower part. The structure of the partition plate 8 that partitions the combustion tube 11 into the vaporization chamber 7 and the combustion chamber 6 will be described in further detail with reference to FIG. 2.

In FIG. 2, the partition plate 8 incorporated in the combustor of this invention is shown. This partition plate 8
The structure is formed to have a plurality of notch passages 15 (four in the figure), which are a plurality of openings, at the peripheral edge. Furthermore, a communication hole 19 through which the ejection pipe 22 passes is formed in the center. Furthermore, the partition plate 8
An upwardly protruding portion 41 is formed along the outer circumferential edge of the notch passage 15 , and an upwardly protruding portion 42 is formed along the inner circumferential edge thereof, that is, the circumferential edge of the communication hole 19 .

Therefore, the partition plate 8 constitutes a kind of saucer or dish-shaped member. This dish-shaped member is connected to the oil reservoir 43.
function as The partition plate 8 is mounted on the stepped portion 9 of the combustion tube 11 and is mounted on the step 9 of the combustion tube 11.
can be partitioned into a vaporization chamber 7 and a combustion chamber 6.
A combustion gas outlet 18 is formed at the lower end of the combustion tube 11 that constitutes the combustion chamber 6 .

Further, an upward annular projection 4 is provided at the lower end of the combustion chamber 6.
0, the upward annular projection 40 and the combustion tube 11 form an annular groove 39, and the annular groove 39 can function as an oil reservoir for fuel liquid.

For example, when the combustor 1 is ignited, the unvaporized fuel liquid mixed with the vaporized fuel and ejected from the jet nozzle 23 of the vaporizer 2 and the jet nozzle 23 of the vaporizer 2
The vaporized fuel ejected from the vaporization chamber 7 collides with or contacts the lid plate 5 and the combustion cylinder 11 and liquefies, and the fuel liquid liquefies the upwardly protruding portions 41 and 42 of the partition plate 8.
The oil is configured to temporarily collect or stay in a dish-shaped oil reservoir 43 formed by the above. In some cases, even when combustion is active, the liquid fuel is incompletely vaporized and flows out as fuel liquid, but the fuel liquid is reliably received by the oil reservoir 43 of the partition plate 8 and is absorbed by the combustion heat. As a result, it is completely vaporized, becomes vaporized fuel, and is vaporized and burned.

The material of the combustion tube 11 is made of ceramic. For example, the ceramic member may be made of cordierite with a porous structure and a material with a small coefficient of thermal expansion. Furthermore, the lid plate 5 of the vaporization chamber 7 may be provided with a porous ceramic member having a low coefficient of thermal expansion.

The combustor 1 according to this invention is constructed as described above and operates as follows.

Electricity is applied to the resistance wire of the vaporizing glow plug in the vaporizing pipe 20 to heat the vaporizing glow plug, and at the same time, liquid fuel is supplied from the combustion supply pipe 24. The liquid fuel is vaporized, and the vaporized fuel is ejected from the ejection port 23 of the ejection pipe 22 into the vaporization chamber 7 through a space (not shown) between the vaporization pipe 20 and the vaporization glow plug.

On the other hand, combustion air is fed from the air intake pipe 12, swirls in the annular space 27 between the outer cylinder housing 14 and the combustion cylinder 11, and is blown into the combustion chamber 6 from the air introduction hole 17. A portion of the combustion air blown into the combustion chamber 6 flows through the notched passages 15 of the partition plate 8 (for example, if four notched passages 15 are provided, one of them causes the air from the air introduction hole 17 to rise). (The latter three function to cause the mixture of air and vaporized fuel to flow downward in an ignited state.)
It is sent into the vaporization chamber 7 through.

In the vaporization chamber 7 , the combustion air, vaporized fuel, and/or fuel liquid sent from below are ignited by the ignition glow plug 4 and blown out from the vaporization chamber 7 into the combustion chamber 6 .

Therefore, in the combustion chamber 6, the vaporized fuel and the combustion air are mixed even more completely into a homogeneous state to produce an air-fuel mixture, which is then completely combusted. The combusted vaporized fuel becomes a combustion gas and is sent out from a combustion gas delivery port 18 formed at the lower end of the combustion tube 11 through a combustion gas delivery pipe 13 to a heat exchanger (not shown) or the like.

When the combustion state in the combustion chamber 6 becomes active, heat of vaporization is received through the vaporization pipe 20 of the vaporization device 2 and the heat receiving fins 28 provided on the vaporization pipe 20. In this state, the energization to the vaporizing glow plug is stopped. After that, the liquid fuel is transferred to the combustion chamber 6.
It receives heat of vaporization from the fuel, becomes vaporized fuel, generates a mixture with combustion air, and continues combustion.

In the above combustion action, the liquid fuel is heated and vaporized by the vaporizing glow plug, and the vaporized fuel is ejected from the ejection port 23. At this time, if the vaporization of the liquid fuel is incomplete, the vaporized fuel is ejected from the ejection port 23. The oil droplets are mixed in and collide with the cover plate 5, and the vaporized fuel is removed with heat and liquefied, becoming a fuel liquid that falls or flows downward along the wall surface of the fuel cylinder 11.

However, since the lid plate 5 is cooled by, for example, the outside air, the vaporized fuel and oil droplet fuel that collide with each other are deprived of heat, and the vaporized fuel may liquefy. The fuel liquid flowing downward may fall onto the partition plate 8 or seep into the combustion tube 11 if the combustion tube 11 is made of ceramic with plenty of pores.

When the combustion in the combustion chamber 6 located below becomes active and the temperature of the combustion chamber 6 becomes high, the fuel liquid on the partition plate 8, the fuel liquid that is falling, and the fuel liquid stored in the oil reservoir 43 are combusted. The fuel liquid is vaporized by the heat and becomes vaporized fuel, which is then combusted.
That is, fuel liquid that has adhered or accumulated on the partition plate 8, falling oil droplets, fuel liquid that is flowing down through the combustion tube 11, fuel liquid that has seeped into the combustion tube 11, and accumulated in the oil reservoir 43. As the combustion in the combustion chamber 6 becomes more active, the fuel liquid is vaporized by the heat of combustion.
It is mixed with the combustion air blown from the air introduction hole 17 to form an air-fuel mixture, which is combusted.

Furthermore, when a porous ceramic member is installed in the cover plate 5, the vaporization chamber 7 is not cooled by external cold air, and the possibility of the vaporized fuel being liquefied into fuel liquid is reduced. Of course.

As mentioned above, the embodiment of the combustor according to this invention has been described in detail, but it is not necessarily limited to these details. For example, for the partition plate that partitions the inside of the combustion cylinder, a plurality of Instead of providing a notch passage that is an opening, the partition plate may be configured to have a plurality of through holes (not shown) at appropriate locations, or the openings of both the notch passage and the through hole may be provided. may be formed. Of course, even in such a case, an upward protrusion is formed along the outer peripheral edge or the inner peripheral edge.

It goes without saying that the dish-shaped member may be constructed by forming a recess on the upper surface of the partition plate. Further, although not shown, a porous ceramic member having a low coefficient of thermal expansion may be installed on the cover plate as the case may be.

Furthermore, although the air intake pipe is installed on the side where the vaporizer is installed, it is not necessarily limited to that location, and may be installed on the opposite side, for example. It may be installed tangentially to the housing, in which case the air swirls in the annular space between the outer cylinder housing and the combustion cylinder so that it is evenly introduced into the combustion cylinder from the air introduction hole. Become. Furthermore, it goes without saying that the number, size, perforation position, perforation direction, etc. of the air introduction holes can also be changed as appropriate.

[Effect of idea]

The combustor according to this invention is constructed as described above and has the following effects. That is, in this combustor, a combustion tube is partitioned into a vaporization chamber and a combustion chamber by a partition plate with an opening, the vaporization chamber is arranged in the upper part of the combustion tube, and the combustion chamber is arranged in the lower part, and the combustion A fuel injection port of the vaporizer that penetrates the chamber is opened into the vaporization chamber, and an upwardly protruding portion is provided along the peripheral edge of the partition plate and the peripheral edge of the central opening, so that the liquid fuel can be rapidly discharged. The vaporized fuel can be immediately combusted and can be used for rapid heating, etc.

In particular, the combustion tube is vertical and can produce a good mixture of vaporized fuel and air, and the unvaporized liquid fuel is less likely to be mixed with the vaporized fuel and ejected from the fuel injection pipe. Even if liquid fuel were to be ejected from the nozzle, the protrusion formed at the periphery of the partition plate would act as a kind of saucer, or dish-shaped member, and the liquid would temporarily remain on the partition plate and be combusted. When it becomes active, it immediately vaporizes and becomes vaporized fuel, which can be completely combusted.

Furthermore, even if the vaporized fuel collides with the combustion tube and lid plate and liquefies into oil droplets, it similarly remains temporarily on the partition plate, and when combustion becomes active, it immediately vaporizes and becomes vaporized fuel. .

Furthermore, since the ignition means is constituted by an ignition glow plug and the vaporization device has a built-in vaporization glow plug, the liquid fuel is reliably vaporized and ignition errors hardly occur.

Moreover, this combustor has a simple structure, has few breakdowns, and is easy to maintain.
It can be manufactured at low cost.

[Brief explanation of the drawing]

Fig. 1 is a sectional view showing an embodiment of the combustor according to this invention, Fig. 2 is a sectional view showing the relationship between the partition plate of Fig. 1 and the combustion tube, and Fig. 3 is a sectional view of the combustor according to the prior art. FIG. 4 is a cross-sectional view showing one example, and FIG. 4 is a cross-sectional view showing another example of a prior art combustor. 1... Combustor, 2... Vaporizer, 4... Ignition glow plug, 6... Combustion chamber, 7... Vaporization chamber, 8
... Partition plate, 11 ... Combustion tube, 15 ... Notch passage (opening), 17 ... Air introduction hole, 18 ... Combustion gas outlet, 19 ... Communication hole (center opening), 20 ...
Vaporization pipe, 22...Ejection pipe, 23...Ejection port, 41, 42...Upward protrusion, 43...Oil reservoir.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A combustion tube, a partition plate that partitions the combustion tube into a vaporization chamber and a combustion chamber and has an opening that communicates the vaporization chamber and the combustion chamber, and an interior of the combustion chamber. In a combustor having a vaporizer that penetrates through the partition plate and opens a fuel injection port to the vaporization chamber, the combustion tube is arranged vertically, the vaporization chamber is located in the upper part of the combustion tube, and the vaporization chamber is located in the lower part of the combustion tube. A combustor, wherein the combustion chamber is located in the partition plate, and an upwardly protruding portion is provided along a peripheral edge of the partition plate. (2) The combustor according to claim 1 of the utility model registration, characterized in that an air introduction hole is formed in the combustion cylinder forming the fuel chamber. (3) The combustor according to claim 1 of the utility model registration, characterized in that the vaporization chamber is provided with an ignition glow plug. (4) The combustor according to claim 1, wherein the vaporizer has a vaporizing glow plug built into the vaporizing pipe. (5) The combustor according to claim 1, wherein a combustion gas outlet is formed at the bottom of the combustion chamber.