JP2015137775A - combustion device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a combustion device which enables a combusting material to be efficiently and completely combusted as a fuel and allows generation of flame of a desired level of thermal power.SOLUTION: A combustion device 10 includes: a cylindrical combustion chamber 20 having a flame outlet 20a provided at one side Ya in an axial direction Y, of a device body 10a, and a flame inlet 20b on the another side Yb; a flame belching nozzle 30 for belching out a flame FH from the side of the flame inlet 20b to the inside of the combustion chamber 20; an air supply fan 40 for supplying air Ar required for combusting the material D to be combusted from the side of the flame inlet 20b to the inside of the combustion chamber 20; a flame belching cylinder 50 fixed coaxially to the inside of the combustion chamber 20; an air supply path 60 which allows a supply of the material D to be combusted and the air AR from the side of the flame inlet 20b to the inside of the combustion chamber 20; and a material storage 70 for storing the flammable material D to be combusted.

Description

  The present invention includes, for example, rice bran generated when whitening grains such as rice and brown rice, oat that is a residue when squeezing soy milk, and wooden chips (including wood chips) generated when processing wood More specifically, the present invention relates to a combustion apparatus used as a burner in an incinerator, a power generation boiler, a heating boiler, or the like.

  Conventionally, in the above-mentioned incinerator, as the fuel used for incineration of incinerated materials, for example, liquid fuel such as heavy oil, light oil, kerosene, or gaseous fuel such as natural gas or propane gas is generally used. Although used, the conditions for the fuel to burn well include the stable supply of air necessary for the fuel to burn and the optimal mixing ratio of fuel and air. .

  As an apparatus for burning the above-mentioned fuel, for example, a fuel vaporizer in a burner combustion system has been proposed (see Patent Document 1). In this fuel vaporizer, the fuel supplied from the fuel supply mechanism is heated and vaporized by the heating mechanism, and the vaporized fuel and air are mixed by the air supply mechanism and supplied to the combustion unit. Burn.

  When the fuel vaporizer of Patent Document 1 is used, for example, for incineration of incinerated materials, if the incinerated material is small in incineration amount, incineration processing is performed with a flame generated when burning liquid fuel or gaseous fuel. However, when the amount of incineration is large, not only the amount of fuel consumed is increased, but also relatively expensive liquid fuel or gaseous fuel is used as the fuel, so that the incineration cost increases.

Therefore, for example, by using combustible materials such as firewood, okara, and wood chips as fuel, the incineration cost required for incineration of the incinerated materials can be reduced.
However, the above-mentioned combustibles are less likely to diffuse uniformly than liquid fuels and gaseous fuels, and the combustibles are likely to be agglomerated, so it is difficult to mix the combustibles and air in a state in which they can easily burn. is there. In addition, since it is difficult for fire to reach the center of the combusted object having a lump shape, it is difficult to uniformly burn the entire combusted object, so that a flame with the thermal power necessary to incinerate the incinerated object is obtained. I can't.

JP-A-6-66416

  An object of the present invention is to provide a combustion apparatus that can efficiently and completely burn a combustible as a fuel and can generate a flame having a desired thermal power.

  The present invention includes a cylindrical combustion chamber having a blowing port on one end side and a blowing port on the other end side, and flame injection means for injecting a flame from the blowing port side toward the combustion chamber. An air supply means for supplying air necessary for burning the burned material from the inlet side toward the inside of the combustion chamber; and a burned material storage unit in which the burned material is stored. The one end side of the air supply path in which supply of the combustible and the air is allowed is connected to the blowing port of the combustion chamber via the air supply means, and the other end side of the air supply path is Air that is inserted into the combusted material storage unit in which the combusted material is stored, and that allows air to be sucked into a protruding side end of the air supply path that protrudes outward from the combusted material storage unit. A storage area of the combustible storage part in the air supply path provided with a suction port The inserted portion, characterized in that it is a combustion apparatus provided with the combustion product suction holes suction is allowed of the combustion product stored to said combustion product reservoir.

Here, the combustibles are, for example, rice cake generated when whitening grains such as rice and brown rice, oats when squeezing soy milk, and wood chips (wood chips generated when processing wood) For example).
The flame injection means can be composed of, for example, a two-hole flame injection nozzle, a one-hole flame injection nozzle, or the like.
The air supply means can be constituted by an air supply fan such as a plate fan or a turbo fan, for example.
The combustible material storage unit can be configured by a combustible material storage tank such as a storage hopper that stores the combustible material, a storage case, or a storage container.

According to the present invention, it is possible to efficiently and completely burn the combusted material as fuel, and it is possible to generate a flame having a desired heating power.
More specifically, when the combustion apparatus according to the present embodiment is used in, for example, an incinerator for incineration of incinerators, if the incineration amount of the incinerators put into the incinerator is large, By actively sucking air from the air suction port of the air supply path by the intake force of the air supply means, the combustible material suction hole provided in the storage area of the combustible material storage part in the air supply path is combusted. A negative pressure that allows the suction of objects is generated.

  Due to the negative pressure described above, the combusted material stored in the combusted material storage unit is actively sucked from the combusted material suction hole of the air supply path, and also to the air sucked from the air suction port of the air supply path. Then, the air is supplied into the ignition allowable region of the flame injection means together with sufficient air for complete combustion of the combusted material while being diffused or mixed uniformly.

  The combusted material diffused in the air is ignited and burned by the flame injected from the flame injection means, and the flame in which the fuel injected from the flame injection means is combusted and the flame in which the combusted material is combusted. While merging, blow into the combustion chamber from the inlet. Or only the flame which the to-be-combusted material combusted is blown in from a blowing inlet into a combustion chamber, and is blown out vigorously from the blowing outlet of this combustion chamber.

Thereby, even if a large amount of incinerated materials is put into the incinerator, the incineration process can be surely performed by the flame blown out from the outlet of the combustion chamber.
As a result, for example, it is possible to efficiently and completely burn a relatively inexpensive combustible as a fuel as compared with liquid fuel or gaseous fuel, and to generate a desired thermal power flame necessary for incineration or the like. Therefore, it is possible to reduce the combustion cost and the incineration cost.

  In addition, when the incineration amount of the to-be-incinerated material thrown into the incinerator is small, the combustion apparatus is configured such that the combustion object suction hole of the air supply path is closed by, for example, a closing means (specifically a closing plate). External air is sucked from the air suction port of the air supply path by the intake force of the air supply means, and sufficient air is allowed to completely burn the flame injected from the flame injection means within the ignition allowable region of the flame injection means. To supply.

While supplying the air sucked from the air suction port of the air supply passage into the ignition permissible region of the flame jetting means, the flame jetted from the flame jetting means is blown into the combustion chamber from the blowout port, and the combustion chamber is blown out. Blow out from the mouth.
Thereby, the incineration object of a small incineration amount can be incinerated only with the flame injected from a flame injection means.

  As an aspect of the present invention, the air supply path is connected to the combustion chamber inlet through the air supply means, and the insertion side is inserted into the combustible storage part in the main supply path. And a branch supply passage connected to the end portion and formed to have a smaller diameter than the main supply passage, and the air suction port protrudes to the outside from the burnable substance storage portion in the branch supply passage. A plurality of the combustion object suction holes may be provided in a portion of the branch supply path inserted into the storage area of the combustion object storage part.

According to the present invention, it is possible to stably supply a combustible material sufficient to generate a flame having a desired thermal power.
More specifically, since the branch supply path of the air supply path is formed to have a smaller diameter than the main supply path, the air is supplied to the plurality of combustible material suction holes provided in the branch supply path by the intake force of the air supply means. It is possible to more positively generate a negative pressure that allows the combustion material to be sucked.

As a result, the combustible material stored in the combustible material storage section is sucked in from the plurality of combustible material suction holes provided in the branch supply path and is uniformly diffused in the air sucked from the air suction port. However, the air is supplied from the inlet through the air supply means into the combustion chamber.
As a result, when generating a flame with a desired thermal power, it is possible to prevent the supply amount of the combusted material from being insufficient, and it is possible to generate a flame with a desired thermal power more stably.

  Further, as an aspect of the present invention, the other end side of the main supply path is inserted perpendicularly from above to the radial center of the combusted material storage unit, and to the bottom of the combusted material storage unit. The branch supply path is predetermined in the circumferential direction with respect to the outer peripheral surface on the other end side of the main supply path with the radial center portion of the combustible substance storage section as the center. A plurality can be arranged radially at intervals.

According to the present invention, almost all the combustible materials stored in the combustible material storage section can be supplied as fuel.
More specifically, a negative pressure that allows the inhalation of the combustible material is generated in the combustible material intake holes in the plurality of radially arranged branch supply paths by the intake force of the air supply means. The combustible material stored in the combustible material storage unit is sucked from the combustible material suction holes in the plurality of branch supply passages, and is uniformly diffused or mixed in the air sucked from the air suction ports of the branch supply passages. However, the air is supplied from the inlet through the air supply means into the combustion chamber.

As a result, substantially all of the combusted materials stored in the combusted material storage unit can be sucked evenly and evenly from the combusted material suction holes in the plurality of branch supply paths.
As a result, almost all the combustible materials stored in the combustible material storage section are supplied as fuel for generating a flame of a desired thermal power without causing the combustible materials to remain in the combustible material storage section. be able to.

Further, as an aspect of the present invention, the air supply means can be constituted by an air supply fan provided with a plurality of blades that allow the combustible to be crushed.
According to the present invention, the combustion object can be uniformly diffused in the air and supplied to the combustion chamber.

  More specifically, the combustion object stored in the combustion object storage part by the intake force of the air supply fan is sucked from the combustion object suction hole of the air supply path, and is also sucked from the air suction port of the air supply path. The air is fed into the air supply fan while being uniformly diffused.

  Since the plurality of blades in the air supply fan are continuously brought into contact with or collided with the combusted material fed into the air supply fan, for example, the combusted material sucked from the combusted material suction hole has a lump shape. Even if it has, it can grind | pulverize more finely and can be spread | diffused uniformly in the air.

  As a result, the combusted material is evenly diffused and blown into the combustion chamber together with air from the air inlet, so that the combusted material can be burned more efficiently and more efficiently. It can be generated reliably.

  Further, as an aspect of the present invention, a concentric circle is fixed to the combustion chamber inner portion in the radial direction, the one end side corresponding to the outlet of the combustion chamber is closed, and the inlet of the combustion chamber A cylindrical flame blowing cylinder having an opening at the other end corresponding to the flame blowing cylinder is provided, and a flame blown into the circumferential surface of the flame blowing cylinder toward the radial center of the flame blowing cylinder is a diameter of the flame blowing cylinder. A plurality of flame blowing holes allowed to blow outward can be provided.

According to this invention, it is possible to more efficiently generate a flame having a desired heating power.
More specifically, the flame blown into the combustion chamber from the blowing port is blown toward the radial center of the flame blowing cylinder, and radially outward from a plurality of flame blowing holes provided on the peripheral surface of the flame blowing cylinder. Blow out.

  A part of the flame that is blown toward the radial center of the flame blowing cylinder is shunted radially outward by hitting one end of the flame blowing cylinder, and the shunted flame is divided into the inner circumference of the flame blowing cylinder. Blow out from the other end side opening toward the blowing port along the surface.

  While combining the flame blown out from the flame blowout hole of the flame blowout cylinder with the flame blown out from the opening on the other end side of the flame blowout cylinder and the flame blown into the combustion chamber from the blowout opening, It blows out vigorously from the outlet.

  Since a swirling flow of flame occurs between the flame blown toward the radial center of the flame blowing cylinder and the flame blown from the opening on the other end side along the inner peripheral surface of the flame blowing cylinder, Not only does the central part of the spiral part in the flame become high temperature, it also becomes a fire type for burning the combustible.

Thereby, even if an unburned combustible remains in the flame blown into the flame blowing cylinder, the combustible can be completely burned more reliably.
As a result, the combusted material diffused in the air can be completely burned more reliably as fuel, and a flame with a desired thermal power can be obtained.

Moreover, as an aspect of the present invention, the portion heated by the flame can be covered with a heat resistant cement formed by adding a hydrophilic inorganic polymer solution having heat resistance.
Here, the part heated by the flame is, for example, the inner peripheral surface of the combustion chamber, the inner peripheral surface of the air supply fan and the outer surface of the blade, the entire peripheral surface of the flame blowing cylinder, the inner peripheral surface of the one end side of the air supply path Or the like.

According to this invention, the heat resistance and fire resistance of the combustion apparatus can be further improved.
More specifically, in the combustion apparatus of the present embodiment, the portion heated directly or indirectly by the flame (specifically, the inner peripheral surface of the combustion chamber, the inner peripheral surface of the fan body in the air supply fan, and the blades) The outer surface, the entire peripheral surface of the flame blowing tube, and the inner peripheral surface of one end of the main supply passage in the air supply passage) are hydrophilic inorganic polymer solutions (specifically, product name = MSL “Metal Silicon Liquid”). Covered with heat-resistant cement.
Thereby, for example, even if a high-temperature flame is generated in which a metal having heat resistance and fire resistance is dissolved, the portion heated by the flame in the combustion apparatus can be prevented from melting.

As a result, the heat resistance and fire resistance of the combustion apparatus are improved, and a function sufficient to generate a flame with a desired thermal power can be stably obtained over a long period of time.
In addition, the hydrophilic inorganic polymer solution contained in the heat-resistant cement contains abundant sodium (Na), for example, has the property of capturing chlorine generated during combustion and substituting it with sodium chloride. The effect of suppressing is acquired.

  According to the present invention, it is possible to provide a combustion apparatus that can efficiently and completely burn a combustible as a fuel and generate a flame having a desired heating power.

Sectional drawing of the combustion chamber in the combustion apparatus of this embodiment. The MM line | wire cut end elevation of the combustion chamber shown in FIG. Sectional drawing of an air supply path and a to-be-combusted material storage part. The NN sectional view taken on the line of the to-be-combusted material storage part shown in FIG. Sectional drawing of the to-be-combusted material storage part of the other example which has a cone type. Sectional drawing of the combustion chamber of the other example which provided the fire type part. The partial expanded sectional view of the air supply path of the other example which provided the air suction path. Sectional drawing of the to-be-combusted material storage part of the other example which provided the stirring apparatus.

An embodiment of the present invention will be described in detail with reference to the drawings.
1 is a cross-sectional view of the combustion chamber 20 in the combustion apparatus 10 of the present embodiment, FIG. 2 is an end view taken along the line MM of the combustion chamber 20 shown in FIG. 1, and FIG. 3 is an air supply path 60 and a combusted material storage section. FIG. 4 is a cross-sectional view of the combustible substance storage unit 70 shown in FIG.

  The combustion apparatus 10 of the present embodiment has a cylindrical combustion chamber 20 having a blowing port 20a on one end side Ya in the axial direction Y of the apparatus main body 10a, and a blowing port 20b on the other end side Yb, and a blowing port. A flame injection nozzle 30 that injects a flame FH from the 20b side toward the inside of the combustion chamber 20 and an air Ar that is required when the combustible D is burned from the blowing port 20b toward the inside of the combustion chamber 20 are supplied. A plate fan type air supply fan 40, a cylindrical flame blowing cylinder 50 fixed concentrically with respect to the inside of the combustion chamber 20, and a combustible D and air Ar from the blowing port 20b toward the inside of the combustion chamber 20 Air supply passage 60 and a combustible material storage section 70 for storing combustible combustible material D.

The combustion chamber 20 is formed in a substantially cylindrical shape with a metal having heat resistance and fire resistance, and is supported in a horizontally placed state by a support means (not shown).
In one end side Ya of the combustion chamber 20 in the axial direction Y, an air outlet 20a that allows the fuel Fu or the flame FH in which the combustible D is burned is opened. On the other end side Yb in the axial direction Y, a blowing port 20b that allows the flame FH, the air Ar, and the combustible D to be blown is opened.

The flame injection nozzle 30 is composed of a two-hole nozzle that injects the flame FH in which the fuel Fu is combusted toward the radial center P1 of the flame blowing cylinder 50, and the radial center of the injection port 20 b in the combustion chamber 20. It arrange | positions to the part P1.
Specifically, the air supply fan 40 connected to the air inlet 20b of the combustion chamber 20 is disposed in the central portion P1 in the radial direction of the air outlet 43.

One end of a fuel supply pipe 30 a is connected to the flame injection nozzle 30. The other end of the fuel supply pipe 30a is connected to a fuel supply source 31 that supplies fuel Fu via a pump and a valve (not shown).
An ignition device 32 (specifically, a heater and a piezoelectric ignition device) for igniting the fuel Fu is provided in the ignition allowable region where the ignition of the fuel Fu injected from the flame injection nozzle 30 is allowed (FIG. 1). FIG. 2).

  At the tip of the flame injection nozzle 30, a linear injection hole (not shown) that jets the flame FH substantially straight toward the radial center P1 of the flame blowing cylinder 50, and a radial injection hole (not shown) that jets the flame FH radially. And are provided. The linear injection holes and the radial injection holes are provided so as to be switched by a switching device (not shown).

  The linear flame FH injected from the linear injection hole of the flame injection nozzle 30 is injected straight as far as it reaches the closed portion 51 of the flame blowing cylinder 50. The radial flames FH injected from the radial injection holes are injected substantially uniformly to the entire inside of the flame blowing cylinder 50.

  A frame holder (not shown) that promotes the stability of the flame FH injected from the flame injection nozzle 30 may be provided inside the air supply fan 40 closer to the air outlet 43 than the flame injection nozzle 30.

  The air supply fan 40 includes a fan main body 41 formed of a metal having heat resistance and fire resistance, and a plurality of blades 42. The air outlet 43 of the fan body 41 is connected to the inlet 20 b of the combustion chamber 20. One end of an air supply path 60 (specifically, the main supply path 61) is connected to the air suction port 44 of the fan body 41.

The plurality of blades 42 are rotated in the supply direction Z by the driving force of the motor 45 directly connected to one side of the fan main body 41, and the air Ar and the combustible D are sucked into the air suction port 44 side. Generate negative pressure.
That is, the air Ar in which the combustible D is uniformly diffused or only the air Ar is sucked from the air suction port 44 of the fan main body 41 and supplied toward the air blowing port 43 (see FIGS. 1 and 3). .

  The flame blowing cylinder 50 is formed in a substantially cylindrical shape with a metal having heat resistance and fire resistance. The axial length Y of the flame blowing cylinder 50 is shorter than the overall length Y of the combustion chamber 20, and the outer diameter of the flame blowing cylinder 50 is smaller than the inner diameter of the combustion chamber 20.

  One end side Ya of the flame blowing cylinder 50 in the axial direction Y is closed by a closing portion 51 that prevents the flame FH from blowing out. On the other end side Yb of the flame blowing cylinder 50 in the axial direction Y, an opening 52 that allows the blowing of the flame FH, air Ar, and the combustible D is opened toward the blowing port 20b of the combustion chamber 20. ing.

  The flame blowing cylinder 50 is disposed at the center in the radial direction inside the combustion chamber 20, and is supported by a plurality of support columns 53 installed between the inner peripheral surface of the combustion chamber 20 and the outer peripheral surface of the flame blowing cylinder 50. It fixes to the concentric circle which shares one radial direction center part P1 with respect to this combustion chamber 20 (refer FIG. 1, FIG. 2).

  A number of flames are formed on the outer peripheral surface of the flame blowing cylinder 50 other than the closing portion 51 so that the flame FH supplied from the flame injection nozzle 30 is allowed to blow out in the radially outward direction of the flame blowing cylinder 50. A blowout hole 50a is provided.

  The flame blowing holes 50a are formed so as to penetrate in the radial direction of the flame blowing cylinder 50, and are spaced at predetermined intervals in the circumferential direction X and the axial direction Y along the outer peripheral surface of the flame blowing cylinder 50 other than the closing portion 51. Arranged.

Between the inner peripheral surface of the combustion chamber 20 and the outer peripheral surface of the flame blowing cylinder 50, a flame blowing path 54 in which the blowout of the flame FH is permitted from the blowing port 20 b side to the blowing port 20 a side in the combustion chamber 20. Is provided.
One end of a fuel supply pipe 55 is connected to the outer peripheral surface of the flame blowing cylinder 50. The other end of the fuel supply pipe 55 is connected to a fuel supply source 56 via a pump and a valve (not shown) (see FIG. 1).

  More specifically, the fuel Fu supplied from the fuel supply source 56 is supplied from the fuel supply pipe 55 into the flame blowing cylinder 50, and ignited by the flame FH blown into the flame blowing cylinder 50. Even if the unburned combustible D remains in the flame FH blown into the blowing cylinder 50, it can be burned completely.

  The air supply path 60 includes a main supply path 61 in which supply of air Ar in which the combustible D is uniformly diffused or only air Ar is allowed, and a plurality of branch supplies formed to have a smaller diameter than the main supply path 61. It is comprised with the path | route 62. FIG.

One end side of the main supply path 61 is connected to the air suction port 44 of the fan body 41 in the air supply fan 40. The other end side of the main supply path 61 is connected to a combusted material storage unit 70 that stores the combusted material D (specifically, rice bran dried to a desired water content).
The combustible material storage unit 70 has a structure in which the combustible material D is allowed to be introduced in addition to the storage unit main body 70a being constituted by a cylindrical hopper (see FIGS. 3 and 4).

  The other end side of the main supply path 61 is inserted vertically into the radial center P2 of the storage unit main body 70a in the combustible substance storage unit 70 from above and at a predetermined interval with respect to the bottom 70b of the storage unit main body 70a. It is provided in the length to be approached.

  The main supply path 61 has an insertion-side end inserted into the storage section main body 70a on the other end side, that is, the outer peripheral surface of the insertion-side end close to the bottom 70b of the storage section main body 70a. One end side of the branch supply path 62 formed in a small diameter is connected.

A plurality of the branch supply paths 62 are radially arranged at predetermined intervals in the circumferential direction with respect to the outer peripheral surface on the other end side in the main supply path 61 with the radial center portion P2 of the storage section main body 70a as the center (see FIG. 4).
The other end side of the branch supply path 62 protrudes from the outer peripheral surface of the storage unit main body 70a by a predetermined length in the radially outward direction. An air suction port 63 that allows air Ar to be sucked in is provided at the projecting side end of the branch supply path 62 that projects outside the storage unit main body 70a.

  A portion of the main supply path 61 inserted into the storage region of the combustible substance storage unit 70, that is, an outer peripheral surface of the branch supply path 62 inserted into the storage region, has a target stored in the combustible substance storage unit 70. Combustion object suction holes 64 that allow the suction of the combustion object D are provided.

A plurality of the combustion object suction holes 64 are arranged along the outer peripheral surface of the branch supply path 62 at a predetermined interval in the longitudinal direction and the circumferential direction (see FIGS. 3 and 4).
A filter (not shown) for removing foreign substances floating in the air Ar may be attached to the air suction port 63 of the branch supply path 62.

A carburetor 65 (vaporizer) for generating a combustible mixed gas is connected to one end side of the main supply path 61 on the outer peripheral surface closer to the other end side than the one outer peripheral surface.
One end of a fuel supply pipe 65a is connected to the carburetor 65. The other end of the fuel supply pipe 65a is connected to a fuel supply source 66 through a pump and a valve (not shown) (see FIG. 3).

More specifically, the fuel Fu supplied from the fuel supply source 66 is vaporized by the carburetor 65 and mixed with the air Ar sucked into the main supply path 61 to generate a combustible mixed gas.
The fuel Fu in the vaporized state mixed with the air Ar is actively burned by sending the gas mixture obtained by mixing the fuel Fu into the air Ar into the combustion chamber 20 together with the combustible D and burning it. The combustion of the combustible D can be assisted.

Thereby, the combustible D can be completely burned more efficiently than when the combustible D is fed into the combustion chamber 20 and burned together with the air Ar not mixed with the fuel Fu.
Note that the above-described fuel supply sources 31, 56, and 66 may be configured by a single fuel supply source.

  A plate-like flow rate adjusting body 67 is pivotally mounted inside the main supply path 61 at one end side closer to the other end side than the carburetor 65. The flow rate adjusting body 67 is rotated in the opening and closing direction by a manual or electric rotating means (not shown) (see FIG. 3).

More specifically, if the flow rate adjusting body 67 is rotated in the opening direction to adjust the flow rate so that the supply amount of the air Ar and the combustible D is increased, the flame FH blown out from the outlet 20a of the combustion chamber 20 Can increase the firepower.
If the flow rate adjusting body 67 is rotated in the closing direction and the flow rate is adjusted so that the supply amounts of the air Ar and the combustible D are reduced, the thermal power of the flame FH blown out from the outlet 20a of the combustion chamber 20 is weakened. be able to.

  The portion heated directly or indirectly by the above-mentioned flame FH, specifically, the inner peripheral surface of the combustion chamber 20, the inner peripheral surface of the fan main body 41 and the outer surface of the blades 42 in the air supply fan 40, flame blowing A hydrophilic inorganic polymer solution (specifically, product name = MSL “Metal Silicon Liquid”) is added to the entire peripheral surface of the tube 50 and the inner peripheral surface of one end of the main supply passage 61 in the air supply passage 60. It is covered with heat resistant cement C.

A temperature sensor 22 for detecting the temperature of the flame FH blown from the blowout port 20a is provided on the inner peripheral surface of the combustion chamber 20 on the blowout port 20a side.
The above-described flame injection nozzle 30 and the air supply fan 40 are controlled by a control device (not shown) based on a detection signal output from the temperature sensor 22. The control device includes a CPU, a ROM, and a RAM (not shown), and the CPU controls the driving and stopping of the flame injection nozzle 30 and the air supply fan 40 in accordance with a program stored in the ROM. .

  Based on the detection signal output from the temperature sensor 22, the CPU determines whether or not the temperature of the flame FH blown out from the outlet 20 a of the combustion chamber 20 is within the temperature range stored in advance in the RAM. To do.

Based on the above determination result, the injection amount of the flame FH injected from the flame injection nozzle 30 (specifically, the injection amount of the fuel Fu) and the supply amount of the air Ar supplied by the air supply fan 40 are variable. Adjust.
Thereby, the thermal power of the flame FH which blows off from the blower outlet 20a of the combustion chamber 20 is weakened or strengthened.

Next, the example which used the above-mentioned combustion apparatus 10 as a burner of the incinerator for incinerating the to-be-incinerated thing which is not illustrated is demonstrated.
First, when the incineration amount of the incineration object thrown into the incinerator (not shown) is large, air Ar outside the apparatus is actively sucked from the air suction port 63 of the branch supply path 62 by the intake force of the air supply fan 40. As a result, a negative pressure that allows the combustion object D to be sucked is generated in the combustion object suction hole 64 provided in the storage region of the combustion object storage section 70 in the branch supply path 62.

  Due to the negative pressure described above, the combustible D stored in the combustible storage 70 is actively sucked from the combusted material suction hole 64 of the branch supply path 62 and from the air suction port 63 of the branch supply path 62. The air Ar is sucked into the air supply fan 40 through the main supply path 61 while being uniformly diffused and mixed with the air Ar (see FIGS. 3 and 4).

  Since the plurality of blades 42 in the air supply fan 40 are continuously brought into contact with and collided with the combustible D fed into the fan main body 41, even if the combustible D has a lump shape, it becomes finer. It can be pulverized and diffused uniformly in the air Ar.

  The combustible material D diffused in the air Ar supplied by the air supply fan 40 and the air Ar sufficient for the combustible material D to completely combust are within the ignition allowable region of the flame injection nozzle 30. Is ignited by the flame FH injected from the flame injection nozzle 30 (see FIGS. 1 and 3).

  While the flame FH in which the fuel Fu injected from the flame injection nozzle 30 combusts and the flame FH in which the combustible D is combusted, the flame FH is continuously blown into the combustion chamber 20 through the blow-in port 20b and the flame blown out. It blows together toward the radial direction center part P1 of the pipe | tube 50. FIG.

The flame FH blown into the flame blowing cylinder 50 is blown out radially from a plurality of flame blowing holes 50 a provided on the peripheral surface of the flame blowing cylinder 50.
A part of the flame FH blown toward the radially central portion P1 of the flame blowing cylinder 50 is applied to the closed portion 51 of the flame blowing cylinder 50 and diverted radially outward, and the diverted flame FH is blown out of the flame. Blowing is performed from the opening 52 toward the blowing port 20b along the inner circumferential surface of the tube 50.

While the flame FH blown from the opening 52 and the flame FH blown from the blowing port 20b are merged with the flame FH blown from the flame blowing hole 50a, the flame FH is blown out vigorously from the blowing port 20a of the combustion chamber 20. (See FIGS. 1 and 2).
As a result, even if a large amount of incineration material is put into the incinerator, the incineration process can be surely performed by the flame FH blown out from the outlet 20a of the combustion chamber 20.

  As a result, for example, it is possible to efficiently and completely burn a relatively inexpensive combustible D as a fuel as compared with liquid fuel, gaseous fuel, or the like, and a desired thermal power required to incinerate the incinerated material. Since the flame FH can be generated, the combustion cost and the incineration cost can be reduced.

  In addition, due to the intake force of the air supply fan 40, the combustion object D stored in the combustion object storage unit 70 is actively sucked from the combustion object suction holes 64 in the plurality of branch supply paths 62 arranged radially. The air Ar sucked from the air suction port 63 of the branch supply path 62 is uniformly diffused and mixed.

Since the combustible material D is sent together with the air Ar from the inlet 20b into the combustion chamber 20 and combusted, it is possible to stably supply the combustible material D sufficient to generate the flame FH of the desired thermal power. Can do.
As a result, when generating the flame FH necessary for the incineration of the incineration object, it is possible to prevent the supply amount of the incineration object D from being insufficient, and it is possible to generate the flame FH of the desired thermal power more stably. .

  Further, substantially all of the combustible materials D stored in the combustible material storage section 70 are uniformly and uniformly sucked from the combustible material suction holes 64 in the plurality of branch supply passages 62. Without remaining, almost all of the combustibles D stored in the combustible material storage unit 70 are used as fuel for generating a flame FH of a desired thermal power, together with the air Ar, to the inside of the combustion chamber 20. Can be reliably supplied.

  Furthermore, the flame FH blown into the combustion chamber 20 from the blowing port 20b is blown toward the radial center portion P1 of the flame blowing tube 50, whereby the flame blown into the radial center portion P1 of the flame blowing tube 50. A swirling flow of the flame FH is generated between the FH and the flame FH blown from the opening 52 along the inner peripheral surface of the flame blowing cylinder 50.

As a result, not only the center of the spiral portion in the flame FH becomes high temperature but also a fire type for burning the combustible D, so that the unburned combusted flame in the flame FH blown into the flame blowing cylinder 50 Even if the article D remains, the combustible article D can be completely burned more reliably.
As a result, the combustible D diffused in the air Ar can be completely burned more efficiently as fuel, and a flame FH having a desired thermal power necessary for incineration of the incinerated material can be generated. .

  Furthermore, the inner peripheral surface of the combustion chamber 20 heated directly or indirectly by the flame FH, the inner peripheral surface of the fan main body 41 and the outer surface of the blades 42 in the air supply fan 40, and the entire peripheral surface of the flame blowing cylinder 50. The inner peripheral surface of one end side of the main supply path 61 in the air supply path 60 is covered with a heat resistant cement C to which a hydrophilic inorganic polymer solution is added.

Thereby, even if the high temperature flame FH which melt | dissolves the metal which has heat resistance and fire resistance melt | dissolves, the combustion chamber 20, the air supply fan 40, the flame blowing cylinder 50, and the air supply path 60 melt | dissolve. Can be prevented.
As a result, the heat resistance and fire resistance of the combustion apparatus 10 are further improved, and a function sufficient to generate the desired flame FH can be stably obtained over a long period of time.

  Moreover, the hydrophilic inorganic polymer solution contained in the heat-resistant cement C contains abundant sodium (Na), and has the property of capturing chlorine generated during combustion and replacing it with sodium chloride, thus suppressing the generation of dioxins. Effect is obtained.

  Furthermore, as the combustion time elapses, the surface of the flame blowing cylinder 50 or the inside of the combustion chamber 20 and the air supply fan 40 is heated to a high temperature at which spontaneous combustion of the combustible D is permitted. The combustion object D diffused in the air Ar fed into the combustion chamber 20 can be spontaneously ignited.

  As a result, even if the injection of the flame FH injected from the flame injection nozzle 30 is stopped or paused, the combustible D diffused in the air Ar can be continuously burned as fuel, and the fuel Fu. Consumption can be minimized.

Next, when the incineration amount of the incineration material put into the incinerator is small, the incineration material is incinerated only by the flame FH injected from the flame injection nozzle 30.
That is, after the combustible material suction hole 64 of the branch supply path 62 in the air supply path 61 is closed by a not-shown closing means (specifically, a closing plate), the air Ar outside the apparatus is removed from the air supply fan 40. While sucking in from the air suction port 63 of the branch supply path 62 by the intake force, sufficient air Ar is supplied into the ignition allowable region of the flame injection nozzle 30 for complete combustion of the flame FH injected from the flame injection nozzle 30. (See FIGS. 1 and 3).

  The fuel Fu injected from the flame injection nozzle 30 is ignited by the ignition device 32, and the flame FH combusted by the fuel Fu is blown into the combustion chamber 20 through the blowing port 20b, and the radial center of the flame blowing cylinder 50 Blow toward part P1.

The flame FH blown into the flame blowing cylinder 50 is blown out radially from a plurality of flame blowing holes 50 a provided on the peripheral surface of the flame blowing cylinder 50.
A part of the flame FH blown into the radial center part P1 of the flame blowing cylinder 50 is applied to the closed part 51 of the flame blowing cylinder 50 and is diverted in the radially outward direction. Are blown out from the opening 52 toward the blow-in port 20b of the combustion chamber 20 along the inner peripheral surface.

While the flame FH blown from the opening 52 and the flame FH blown from the blowing port 20b are merged with the flame FH blown from the flame blowing hole 50a, the flame FH is blown out vigorously from the blowing port 20a of the combustion chamber 20. (See FIGS. 1 and 2).
Thereby, an incineration object with a small amount of incineration can be incinerated only with the flame FH injected from the flame injection nozzle 30.

  Next, another example of the above-described combustion apparatus 10 will be described. In other examples, parts that are the same as or equivalent to those in the above configuration are denoted by the same reference numerals, and detailed description thereof is omitted.

First, the other example which stored the above-mentioned to-be-combusted material D in the to-be-combusted material storage part 71 which has a cone shape is demonstrated.
FIG. 5 is a cross-sectional view of another example of the combustible material storage unit 71 having a conical shape.

  The combustible material storage part 71 is a hopper having a conical shape and constitutes a storage part main body 71a. The bottom portion 71b of the storage portion main body 71a is formed in a conical shape having a gradually decreasing diameter from the outer peripheral portion of the bottom portion 71b toward the central portion, and the inner peripheral surface of the bottom portion 71b is centered from the outer peripheral portion of the bottom portion 71b. It inclines so that it may become low gradually toward the part.

  More specifically, when the combustion object D stored in the combustion object storage unit 71 is burned as fuel, the combustion object D stored in the combustion object storage unit 71 is divided into a plurality of parts by the intake force of the air supply fan 40. Suction from the combustion object suction hole 64 in the branch supply path 62.

  As the stored amount of the combustible material D stored in the combustible material storage section 71 is reduced by the suction operation described above, the combustible material D moves along the inner peripheral surface of the bottom portion 71b having a conical shape. Since they gather at the center while flowing down, almost all of the combustible materials D stored in the combustible material storage section 71 can be sucked from the combustible material suction holes 64 of the branch supply path 62.

  As a result, almost all the combustibles D stored in the combustible material storage unit 70 without being left in the combustible material storage unit 70 are used as fuel for generating the desired flame FH. It can be reliably supplied to the inside of the combustion chamber 20 together with Ar.

As a result, when the combustible D is burned in the combustion chamber 20 as fuel, the supply amount of the combustible D can be prevented from being insufficient or intermittently supplied. It can be generated more stably.
In addition, substantially all of the combusted materials D stored in the combusted material storage section 71 can be efficiently and completely burned as fuel for generating the desired flame FH.

Next, instead of the flame FH injected from the flame injection nozzle 30 described above, another example in which a fire type part 501 for burning the combustible D is provided inside the one end side Ya of the flame blowing cylinder 50 will be described. To do.
FIG. 6 is a cross-sectional view of another example combustion chamber 20 in which a fire type portion 501 is provided inside one end side Ya of the flame blowing cylinder 50.

  More specifically, the fire type part 501 includes a wall part 502 that divides the inside of the flame blowing cylinder 50 into two in the axial direction Y, a fire type chamber 503 formed between the closed part 51 and the wall part 502, and a fire type chamber 503. And a porous ceramic ball 504 having heat resistance and fire resistance.

The wall portion 502 is formed to have substantially the same diameter as the inner diameter of the flame blowing cylinder 50, and has an inner peripheral surface closer to the opening portion 51 than the closing portion 51 of the flame blowing cylinder 50 with respect to the closing portion 51. It is provided at intervals.
The wall 502 is provided with a plurality of holes 502 a that allow passage of the flame FH blown into the flame blowing cylinder 50 along the wall 502 at a predetermined interval.

  That is, a part of the flame FH blown from the blowing port 20 b of the combustion chamber 20 into the flame blowing cylinder 50 passes through the hole 502 a of the wall portion 502 in the fire type portion 501 and is contained in the fire type chamber 503. Ball 504 is sprayed.

  As a result, the ceramic balls 504 accommodated in the fire type chamber 503 are heated substantially uniformly and change to a red hot state. Therefore, even if the injection of the flame FH injected from the flame injection nozzle 30 is stopped or stopped, the red hot ceramic By using the ball 504 as a fire type, the vaporized fuel Fu mixed with the air Ar or the combustible D diffused in the air Ar can be continuously burned completely.

  As a result, the flame FH having the desired thermal power can be generated more stably, and even if the unburned combustible D remains in the flame FH blown into the flame blowing cylinder 50, the flame FH is more completely completed. Can be burned.

Next, another example in which the air suction path 602 that allows the above-described suction of the air Ar is connected to the main supply path 61 of the air supply path 60 will be described.
FIG. 7 is a partially enlarged cross-sectional view of another example air supply path 60 in which the air suction path 602 is connected to the main supply path 61.

More specifically, one end of the air suction path 602 is connected to one end side of the main supply path 61. The other end of the air suction path 602 is provided with an air suction port (not shown) that allows air Ar to be sucked.
Inside the air suction path 602, a flow rate adjusting body 67 for variably adjusting the suction amount of the air Ar is pivotally attached.

  One end of the fuel supply pipe 603 is connected to one end of the main supply path 61 that is closer to the air supply fan 40 than the air suction path 602. The other end of the fuel supply pipe 603 is connected to a fuel supply source 604 via a pump and a valve (not shown).

  In order to spray the fuel Fu supplied from the fuel supply source 604 in the form of a mist on the projecting side end of the fuel supply pipe 603 protruding into the main supply path 61 using the intake force of the air supply fan 40. The outlet 603a is provided.

  That is, the fuel Fu discharged from the outlet 603a of the fuel supply pipe 603 is sprayed in the form of mist by the intake force of the air supply fan 40, and is substantially uniform with respect to the combustible D supplied along with the air Ar. To the combustion chamber 20 while mixing.

  As a result, the combustion object D supplied into the combustion chamber 20 is more efficiently and completely burned using the flame FH injected from the flame injection nozzle 30 or the ceramic ball 504 in a red hot state accommodated in the fire type portion 501 as a fire type. In addition, the flame FH having a desired heating power can be generated more efficiently.

  Further, even when the supply of the combusted material D stored in the combusted material storage unit 71 is stopped or stopped, the mist-like fuel Fu sprayed from the outlet 603a of the fuel supply pipe 603 is discharged from the air suction path 602. A flame FH having a desired heating power can be generated by supplying the air Ar into the combustion chamber 20 while mixing the air Ar in a substantially uniform manner.

  By burning the mist-like fuel Fu in the combustion chamber 20 instead of the above-mentioned combustible D, for example, the time required for incineration or heating is short, or the thermal power required for incineration or heating is reduced. The flame FH having a desired thermal power can be generated depending on the situation.

Next, another example in which the stirring device 701 for stirring the combustion object D stored in the combustion object storage part 71 described above is provided in the storage part main body 71a will be described.
FIG. 8 is a cross-sectional view of another example of the combustible material storage unit 71 in which the stirring device 701 is provided in the storage unit main body 71a.

  More specifically, the stirring device 701 includes a support shaft 702 that is supported in the storage area of the storage unit main body 71a and orthogonal to the vertical direction of the storage unit main body 71a, and a plurality of protrusions that protrude from the peripheral surface of the support shaft 702. A stirring blade 703 and a motor 704 directly connected to one end of the support shaft 702 are configured.

  A plurality of the stirring blades 703 are arranged at a predetermined interval with respect to the axial direction of the support shaft 702, and are eccentrically deviated by a predetermined angle in the circumferential direction around the axial center of the support shaft 702 toward the radially outward direction. It protrudes.

  That is, the plurality of stirring blades 703 are rotated by the driving force of the motor 704 to stir the combustion object D stored in the combustion object storage unit 71 substantially uniformly, and the branch supply path 62 of the air supply path 60 The combustible material suction hole 64 is pulverized to a size that allows suction.

Thereby, even if the combustible D containing moisture is agglomerated in the combustible storage 71, the combustible D remains or remains inside the combustible storage 70. And can be reliably sucked from the combustible material suction hole 64 of the branch supply path 62.
As a result, the combustible D sufficient to generate the flame FH having the desired thermal power can be more stably supplied together with the air Ar into the combustion chamber 20.

The branch supply path 62 of the combustible substance storage unit 70 is connected to the air suction port 4 of the air supply fan 40 via a flexible duct 601 (specifically, a bellows type duct) that constitutes the air supply path 60. ing.
That is, it is possible to freely change the arrangement of the combustible substance storage unit 70 according to the installation location of the combustion device 10 only by deforming (stretching or bending) the flexible duct 601 having flexibility.

In the correspondence between the configuration of the present invention and the embodiment,
The flame injection means of this invention corresponds to the flame injection nozzle 30 of the embodiment,
Similarly,
The air supply means corresponds to the air supply fan 40,
The present invention is not limited to the configuration of the above-described embodiment, but can be applied based on the technical idea shown in the claims, and many embodiments can be obtained.

  In the above-described combustion apparatus 10, for example, when the incineration amount of the incineration object is small, the flame FH injected from the flame injection nozzle 30 and the flame FH in which the combustion object D burns may be used in combination. The processing time required for incineration can be greatly reduced.

  Further, for example, a heat conduction tube for heat exchange (not shown) may be provided on the outer peripheral surface (or inner peripheral surface) of the combustion chamber 20, and a medium that flows in the heat conduction tube due to residual heat radiated during combustion (specifically, In this embodiment, the combustion apparatus 10 of the present embodiment can also be used for power generation by heating and evaporating the liquid) and driving the steam turbine for power generation using the pressure of the steam.

Ar ... Air C ... Heat-resistant cement D ... Combustible material FH ... Flame Fu ... Fuel 10 ... Combustion device 20 ... Combustion chamber 20a ... Blow-out port 20b ... Blow-in port 30 ... Flame injection nozzle 32 ... Ignition device 40 ... Air supply fan 42 DESCRIPTION OF SYMBOLS ... Blade 50 ... Flame blowing cylinder 50a ... Flame blowing hole 51 ... Blocking part 52 ... Opening part 60 ... Air supply path 61 ... Main supply path 62 ... Branch supply path 63 ... Air suction port 64 ... Combustion material suction hole 70, 71 ... Combusted matter storage unit 501 ... Fire type part 502 ... Wall part 502a ... Hole part 503 ... Fire type chamber 504 ... Ceramic ball 601 ... Flexible duct 602 ... Air suction path 603 ... Fuel supply pipe 701 ... Agitator

Claims (6)

A cylindrical combustion chamber having an outlet on one end and an inlet on the other end;
Flame injection means for injecting flame from the inlet side toward the inside of the combustion chamber;
An air supply means for supplying air necessary for burning the combusted material from the inlet side toward the inside of the combustion chamber;
A combustible material storage unit in which the combustible material is stored,
Connecting one end side of the combustion object and the air supply path in which the supply of air is allowed to the blowing port of the combustion chamber via the air supply means;
The other end side of the air supply path is
Air that is inserted into the combusted material storage unit in which the combusted material is stored, and that allows air to be sucked into a protruding side end of the air supply path that protrudes outward from the combusted material storage unit. Provide a suction port,
Combustion device provided with a combustible material suction hole that allows the combustible material stored in the combustible material storage unit to be sucked in a portion inserted in the storage region of the combustible material storage unit in the air supply path. . The air supply path,
A main supply path connected to the combustion chamber inlet through the air supply means;
It is connected to the insertion side end inserted into the combustible material storage part in the main supply path, and comprises a branch supply path formed with a smaller diameter than the main supply path,
The air inlet,
Provided at the projecting side end projecting outside from the combustible storage part in the branch supply path,
The combustion object suction hole,
2. The combustion apparatus according to claim 1, wherein a plurality of the combustion apparatuses are provided in a portion of the branch supply path that is inserted into a storage region of the combusted material storage unit. The other end side of the main supply path is
Inserting perpendicularly from above with respect to the radial center of the combusted material storage unit, and providing a length close to a predetermined interval with respect to the bottom of the combusted material storage unit,
The branch supply path,
The combustion according to claim 1 or 2, wherein a plurality of radials are arranged radially at a predetermined interval in the circumferential direction with respect to the outer peripheral surface on the other end side in the main supply path, with the radial center of the combustible substance storage unit as a center. apparatus. The air supply means;
The combustion apparatus as described in any one of Claims 1-3 comprised with the air supply fan provided with the some blade | wing which the grinding | pulverization of the said to-be-combusted material is accept | permitted. In the center of the combustion chamber in the radial direction,
The cylinder is fixed concentrically with the combustion chamber, closes one end side corresponding to the blowout port of the combustion chamber, and has a cylindrical flame blowout cylinder opened at the other end side corresponding to the blowout port of the combustion chamber,
On the outer peripheral surface of the flame blowing cylinder,
The flame blown toward the radial direction center part of the flame blowing cylinder is provided with a plurality of flame blowing holes that are allowed to blow out toward the radially outward direction of the flame blowing cylinder. Combustion device described in one. The combustion apparatus according to any one of claims 1 to 5, wherein a portion heated by the flame is covered with a heat resistant cement obtained by adding a hydrophilic inorganic polymer solution having heat resistance.

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