JPH07301420A - Gas burning device - Google Patents

Abstract

PURPOSE:To prevent lift upon powerful fire combustion, back fire upon gentle fire combustion, non aerated combustion and incomplete combustion, permit complete combustion from powerful fire to gentle fire and enlarge the adjusting range of heating power. CONSTITUTION:A gas burning device is provided with a gas burner 19, consisting of a gas burner main body 11, whose inside is divided into a flow passage of gas for gentle fire 14 and another flow passage of gas for powerful fire 15, and a burner head 16, mounted on the gas burner main body 11 and provided with a plurality of flame ports 17 formed thereon, an adjusting means 56 for adjusting the heating power of the gas burner 19, and a switching means 44 for switching the supply of gas into both gas flow passages 14, 15 and the flow passage of gas for gentle fire 14 in accordance with the adjustment of the adjusting means 56.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas combustor capable of controlling thermal power.

[0002]

2. Description of the Related Art A conventional gas combustion apparatus is provided with a parent burner passage and a child burner passage, respectively, and is connected to the child burner passage at the center of the parent burner connected to the parent burner passage. An independent burner is provided.

Further, another conventional gas combustion apparatus is shown in FIG.
As shown in FIG. 12, the gas burner main body 1, the burner head 2 mounted on the gas burner main body 1, and a plurality of flame holes 3 of the same size formed on the peripheral surface of the burner head 2.
The gas burner 4 is used.

The flame hole load is used as a value indicating the size of the flame hole 3 capable of completely burning the flame in a stable state, and this flame hole load divides the heat power by the total area of the flame holes. Required by Then, the heating power is adjusted by an adjusting means composed of a fixed closure and a rotatable closure.

Next, as shown in FIG. 13A, still another conventional gas combustion apparatus has small flame holes 5 arranged at predetermined intervals and two small flame holes 5 arranged in each small flame hole 5. A burner head 7 composed of a long flame hole 6 having a length twice as long as the burner head 7 is used, or as shown in FIG.
Burner head 9 in which large flame holes 8 of double size are alternately arranged
Flame holes with various shapes and areas such as 5
6 and 8 are arranged to give a flame-repairing effect, and the range of fire power control is expanded.

Further, recently, the number of adjusting means composed of a slide type lever, in which the minimum thermal power is determined by the orifice diameter, has increased, and the detected temperature of a thermocouple installed near the gas burner has increased. If it is below a certain level, it is determined that the gas is extinguished, and a safety device for extinguishing the gas is installed. Therefore, there are some devices that cannot perform low-temperature combustion as compared with the conventional gas combustion device shown in FIGS. For this reason, there is a growing demand for a burning fire.

[0007]

In the case of the conventional apparatus composed of the independent parent burner and the child burner, the both burners are simply arranged close to each other, and the operation is troublesome and the apparatus becomes large in size. There is a problem.

In the case of the apparatus shown in FIGS. 10 to 12,
There is a problem that the heat power adjustment range is small.

Next, in the case of the conventional apparatus provided with the burner heads 7 and 9 shown in FIGS. 13A and 13B, the shape and arrangement of the flame holes 5, 6 and 8 are devised, and the conventional apparatus shown in FIGS. Although the heat power adjustment range is expanded as compared with the gas combustion device of No. 1, since the area of the flame hole is constant, if the heat power is adjusted, the load of the flame hole exceeds the range suitable for combustion, and the conventional method shown in FIGS. In comparison with the gas combustion device of No. 1, there is a problem that lift during high heat, flashback during simmering, red flame combustion, and incomplete combustion are more likely to occur.

In consideration of the above points, the present invention prevents lift during high heat, flashback during simmering, red flame combustion, and incomplete combustion, allows complete combustion from high to low heat, and has a thermal power control range. It is an object of the present invention to provide a gas combustion device that can be expanded.

[0011]

In order to solve the above problems, a gas combustion apparatus according to claim 1 of the present invention comprises a gas burner main body whose inside is divided into a gas passage for low heat and a gas passage for high heat. A gas burner comprising a burner head mounted on the gas burner main body and having a plurality of flame holes formed therein, adjusting means for adjusting the heating power of the gas burner, and gas supply according to the adjustment of the adjusting means. And a switching means for switching to the low heat gas flow path.

Further, in the gas combustion apparatus of the second aspect, the switching means is constituted by the movable nozzle. further,
According to a third aspect of the gas combustion apparatus, the switching means is constituted by a shutter that opens and closes the high-fire gas passage.

Further, in the gas combustion apparatus according to a fourth aspect of the present invention, the switching means is constituted by a control fluid which induces a side wall adhesion phenomenon in the gas fluid. Furthermore, a gas combustion apparatus according to a fifth aspect is the gas combustion apparatus according to the fourth aspect, wherein an oxidation-enriched film is provided at the primary air inlet of the gas burner. Further, in the gas combustion device according to the sixth aspect, the area of the flame hole for high flame is set to 5 times or less the area of the flame hole for low flame.

[0014]

According to the first aspect of the gas combustion apparatus of the present invention having the above-described structure, the gas supply for the low heat inside the gas burner is adjusted by the switching means for adjusting the heating power of the gas burner by the switching means. Since the gas passage for high heat and the gas passage for low heat are switched, combustion is performed with a flame hole load suitable for combustion, and lift during high heat, flashback during simmering, red fire combustion, and incomplete combustion occur. It is prevented, complete combustion from high heat to low heat can be performed, and the range of thermal power control is expanded.

Further, in the gas combustion apparatus according to the second aspect of the present invention, the gas supply is switched between the low-fire and high-fire gas passages and the low-fire gas passage by the switching means including the movable nozzle. During high heat, the gas flows into both gas flow paths by the movable nozzle, and during low heat, the movable nozzle leans toward the low heat gas flow path, and gas flows into only the low heat gas flow path.

Further, in the gas combustion apparatus according to a third aspect of the present invention, the gas supply is controlled by a switching means including a shutter that opens and closes the high-fire gas passage, and a low-fire, high-fire gas passage and a low-fire gas flow are provided. Since it was switched to the path, the gas flow path for high heat is opened during high heat, the gas flows into both gas flow paths, the gas flow path for high heat is closed during low heat, and the gas flows into the gas flow path for low heat. Inflow.

According to a fourth aspect of the present invention, there is provided a gas combustion apparatus for a low heat, a high heat gas flow path, and a low heat gas flow path by means of a switching means which is a control fluid for inducing a side wall adhesion phenomenon in the gas fluid. Since the flow path is switched to the gas flow path, the control fluid is ejected to the gas fluid at the time of low heat, the gas fluid induces a side wall adhesion phenomenon, and the gas flows into only the low heat gas flow path.

Further, since the oxidation enriched film is provided at the primary air intake port (claim 5), the oxygen concentration is increased,
Stable combustion is performed even with a small amount of air. Further, since the area of the flame hole for strong flame is set to 5 times or less the area of the flame hole for weak flame (Claim 6), combustion is performed with a flame hole load that opposes combustion.

[0019]

EXAMPLES Examples will be described with reference to FIGS. 1 to 9. (Embodiment 1) First, in FIGS. 1 to 4 showing Embodiment 1, 10 is a base portion into which gas of the gas burner main body 11 flows, 12 is an annular tip portion of the gas burner main body 11 communicating with the base portion 10, and 13 is It is a partition wall, and the front end portion is partitioned into an inner low-heat gas flow passage 14 and an outer high-heat gas flow passage 15, and a partition wall 13 extends to the middle of the base 10.

Reference numeral 16 is a disc-shaped burner head mounted on the tip 12 of the gas burner body 11, 17 is a plurality of flame holes formed on the peripheral surface of the burner head 16, and 18 is a base portion 10 of the gas burner body 11. A gas and primary air supply port formed at the inlet of the gas burner, and 19 is a gas burner including a gas burner main body 11 and a burner head 16.

Reference numeral 20 is a gas supply passage, and 21 is a gas supply passage 20.
An inflow path in the front-rear direction having an inflow portion 22, a solenoid 23 provided at the rear end of the inflow path 22, a solenoid valve 24 provided in front of the solenoid 23 for opening and closing the inflow portion 22, and an inflow path 25. An ignition and fire extinguishing switch provided at the front end of 21 so as to be movable forward and backward, by opening and closing the solenoid valve 24,
The gas burner 19 is ignited and extinguished. Reference numeral 26 is an opening / closing portion including a solenoid 23, a solenoid valve 24, an ignition / extinguishing switch 25.

Reference numeral 27 is an outflow passage in the vertical direction connected to the inflow passage 21, and 28 is provided in the lower portion of the outflow passage 27.
It is a governor valve that regulates the gas from 2 and includes an adjusting rod 30 that adjusts the gas flow hole 29, a spring 31 that biases the adjusting rod 30 forward, and a rubber packing 32 that is attached to the adjusting rod 30. Become. Reference numeral 33 is an outflow portion provided in the upper portion of the outflow passage 27.

Reference numeral 34 denotes a support plate whose central portion is rotatably supported by the rotary shaft 35, 36 denotes a cylindrical support member integrally provided on the rear surface of the support plate 34, and 37 denotes an inner surface of the support member 36. It is a rubber member that penetrates the through hole 38 of the support plate 34, and has a front end portion connected to the outflow portion 33. Reference numeral 39 denotes a movable nozzle attached to the rear end of the rubber member 37.

Reference numeral 40 denotes two stoppers provided in front of and behind the right end of the support plate 34, 41 denotes an iron core attached to the left end of the front surface of the support plate 34, and 42 urges the iron core 41 rearward. A spring, 43 is a solenoid of the iron core 41, 44 is a support plate 34, a rotary shaft 35, a support member 36, a rubber member 37,
It is a switching means including a stopper 40, an iron core 41, a spring 42, and a solenoid 43.

Reference numeral 45 denotes a needle provided on the upper portion of the outflow passage 27 so as to be movable up and down, 46 denotes a spring for biasing the needle 45 downward, 47 denotes a planting rod horizontally planted on the upper portion of the needle 45, 48 is a rubber packing attached to the outer surface of the needle 45 below the planting rod 47, 49 is a through hole formed on the lower side surface of the needle 45 and communicating with an orifice 50 on the lower surface of the needle 45, and 51 is a needle 45 of the needle 45. The upper axis.

Reference numeral 52 denotes a horizontal adjustment lever having a substantially intermediate base portion rotatably supported by a shaft 51, reference numeral 53 denotes a plate-shaped vertical portion of the adjustment lever 52, and reference numeral 54 obliquely provided on the vertical portion 53. It is a long hole, and the planting rod 47 is loosely inserted in the long hole 54. 55 is a grip portion at the front end of the adjusting lever 52, 56 is a needle 45, a spring 46, a planting rod 47, a rubber packing 4.
8, an through hole 49, an orifice 50, an adjusting lever 52, a vertical portion 53, an elongated hole 54, a grip portion 55, and the like.

Reference numeral 57 is a thermocouple arranged near the burner head 16, and a thermoelectromotive force is obtained by the flame of the gas burner 19. Reference numeral 58 is a lead wire that connects the thermocouple 57 and the solenoid 23, and uses the thermoelectromotive force of the thermocouple 57 as a power source for the solenoid 23 to attract the solenoid valve 24.

Next, the operation will be described. First, when the ignition / extinguishing switch 25 is pressed, the solenoid valve 24 opens,
Gas from the inflow portion 22 passes through the governor valve 28 and flows out of the outflow passage 2
7 into the gas burner 1 through the outflow portion 33.
9, and the gas is ejected from the flame hole 17 together with the primary air flowing in from the supply port 18. At this time, the gas burner 19 is ignited by the ignition device (not shown), the thermocouple 57 is heated, and when the thermoelectromotive force of the thermocouple 57 becomes a certain value or more, the solenoid 23 attracts the solenoid valve 24.

When the grip 55 is moved to the right when the medium heat is switched to the low heat shown in FIGS. 1 and 3, the planting rod 47 is moved.
Moves to the lower end of the long hole 54 along the long hole 54, and the needle 45 moves downward. When the lower position of the needle 45 or the right position of the adjusting lever 52 is detected, the solenoid 43 is turned on by the detection signal, the iron core 41 is attracted, the support plate 34 rotates counterclockwise, and the right end of the support plate 34. Comes into contact with the stopper 40 on the rear side, and the direction of the movable nozzle 39 is tilted leftward from the center position via the support member 36. At this time, the movable nozzle 39 is tilted so that the gas supply port 18
A difference occurs in the suction amount of the primary air from the primary air, and the primary air flows into the low-fire gas flow path 14 together with the gas flowing through the orifice 50 and the through hole 49 of the needle 45, and low-fire combustion is performed.

Next, when the grip portion 55 is moved to the left from the low heat state, the planting rod 47 is moved along the slot 54 along the slot 54.
To the right, and the needle 45 moves upward. Then, when the upward movement position of the needle 45 or the specific position of the adjusting lever 52 is detected, the solenoid 43 is turned off by the detection signal, the iron core 41 is moved backward by the spring 42, and the support plate 34 is rotated rightward. The right end of the support plate 34 contacts the stopper 40 on the front side, the direction of the movable nozzle 39 faces the central position, and the gas passes through the outflow portion 33 and the movable nozzle 39 for low heat,
It flows into the high-fire gas flow passages 14 and 15 and shifts to high-fire combustion.

(Embodiment 2) Next, Embodiment 2 will be described with reference to FIGS. In those figures,
The same reference numerals as those in FIGS. 1 to 5 indicate the same or corresponding ones, and the different points are as follows.

Reference numeral 59 is an iron core disposed to the right of the gas burner main body 11, 60 is a spring for biasing the iron core 59 to the left, and 61 is a spring.
Is a solenoid of the iron core 59, and 62 is an I-shaped shutter having one end attached to the tip of the iron core 59 and made of rubber packing. The shutter penetrates the right side surface of the base portion 10 of the gas burner body 11 airtightly and contacts the partition wall 13. It is provided so that it can be separated. 63
Is a recess formed in the partition wall 13 into which the tip of the shutter 62 is fitted, 64 is an iron core 59, a spring 60, a solenoid 61,
It is a switching unit including a shutter 62.

Then, when the medium heat is switched to the low heat shown in FIGS. 3 and 6, the lower position of the needle 45 or the right position of the adjusting lever 52 is detected, and the solenoid 61 is turned off by the detection signal, and the iron core is turned on. 59 moves to the left by the spring 60, the shutter 62 moves to the left, the tip of the shutter 62 fits into the recess 63, and the high-fire gas flow path 15 is closed.
The gas flows only into the low-fire gas flow passage 14, and low-fire combustion is performed.

Next, the grip 55 is moved to the left from the low heat state to detect the upward movement position of the needle 45 or the specific position of the adjusting lever 52, and the detection signal turns on the solenoid 61 to turn on the iron core. 59 is sucked and the shutter 62
Moves to the right, the high heat gas flow passage 15 is opened, the gas flows into the low heat and high heat gas flow passages 14 and 15 from the outflow portion 33, and transitions to high heat combustion.

(Third Embodiment) Next, a third embodiment will be described with reference to FIGS. 8 and 9. In those figures,
Differences from FIG. 1 are as follows. Reference numeral 65 denotes a control flow path vertically connected to the right side wall of the base portion 10 of the gas burner body 11, and a control fluid 66 composed of air that induces a side wall adhesion phenomenon of the gas fluid is ejected to suck the fluid of the base portion 10. Reference numeral 67 is a protrusion that is provided on the inner surfaces of both side walls of the base portion 10 of the gas burner main body 11 and that induces the side wall adhesion phenomenon of the gas fluid. 68 is a control flow path 65, a control fluid 66, and a protrusion 67.
Is a switching means.

At the time of switching from the medium heat state to the low heat state shown in FIGS. 3 and 8, the lower position of the needle 45 or the right position of the adjusting lever 52 is detected, and the control signal 65 is output from the control flow path 65 by the detection signal. The control fluid 66 is ejected, the control fluid 66,
A side wall adhesion phenomenon occurs in the gas fluid due to the protrusion 67, and the gas and the control fluid 66 flow along the side wall of the low-fire gas flow passage 14 only in the low-fire gas flow passage 14 to perform low-fire combustion.

Once the gas and the control fluid 66 are attached to the side wall, the attached state is maintained unless the control fluid 66 is sucked.

Next, the grip portion 55 is moved to the left from the low heat state to detect the upper position of the needle 45 or the specific position of the adjusting lever 52, and the detection signal outputs the fluid from the control channel 65 to the base 10 fluid. 66 is sucked, the gas flows into the gas passages 14 and 15 for low heat and high heat, and transitions to high heat combustion.

In the case of the third embodiment, the suction of the primary air may be defective due to the protrusion 67, and it is necessary to use an air pump. However, an oxygen enrichment film is provided at the primary air suction port of the gas burner 19, and the oxygen concentration is increased. Configured to increase
Stable combustion can be performed even with a small amount of air.

(Embodiment 4) Next, in order to perform stable combustion, it is necessary to suppress the flame hole load within a certain range. For example, in the case of 13A type gas, the flame hole load is 2
it is necessary to suppress the range of ^{kcal / mm 2 h~12kcal / mm 2} h.

Now, assuming that the area of the flame holes for low heat is 1 and the area of the flame holes for high flame is A times that, the flame holes for low flame are switched to all flame holes for high flame and low flame. At that time, the flame load of the low flame flame before switching was suppressed to a maximum of 12 kcal / mm ² h, and the flame load of all flame holes immediately after switching was 2 kcal / mm ² h.
In order to achieve mm ² h or more, 2 ≦ 12 / (A + 1) is desired. That is, from this equation, A ≦ 5.
Therefore, by setting the area of the flame hole for strong flame to 5 times or less of the area of flame hole for low flame, combustion can be performed with a flame load suitable for combustion.

[0042]

Since the present invention is constructed as described above, it has the following effects. In the gas combustion apparatus according to claim 1 of the present invention, the gas supply is switched by the switching means 4.
4, 64, 68 according to the adjustment of the adjusting means 56 for adjusting the heating power of the gas burner 19, the gas passages 14, 15 for low heat and high heat, and the gas flow passage 14 for low heat in the gas burner 19 are adjusted.
By switching to and, it is possible to perform combustion with a flame hole load suitable for combustion, prevent lift during high heat, flashback during simmering, red flame combustion, incomplete combustion, and complete combustion from high to low heat. The fire power adjustment range can be expanded.

Further, in the gas combustion apparatus according to the second aspect of the present invention, the gas supply is switched by the movable nozzle 39.
Since the gas flow passages 14 and 15 for low heat and high heat are switched to the gas flow passage 14 for low heat by 4, the gas flows into both gas flow passages 14 and 15 by the movable nozzle 39 during high heat, The movable nozzle 39 is tilted to the low heat gas flow passage 14 so that the gas can flow into only the low heat gas flow passage 14.

Further, in the gas combustion apparatus according to the third aspect of the present invention, the gas supply is controlled by the switching means 64 including the shutter 62 that opens and closes the high-fire gas passage 15, for the low-fire and high-fire gas passages 14, 15. Since the gas flow path 14 for low heat is switched to the gas flow path 14 for low heat, the gas flow path 15 for high heat is opened during high heat and gas is introduced into both gas flow paths 14, 15, and the gas flow path 15 for high heat is opened during low heat. When closed, the gas can flow only into the low heat gas flow path 14.

Further, in the gas combustion apparatus according to a fourth aspect of the present invention, the gas supply is controlled by the switching means 68 including the control fluid 66 for inducing the side wall adhesion phenomenon in the gas fluid. 15 and the gas passage 14 for low heat, the control fluid 66 is jetted into the gas fluid at the time of low heat to induce the side wall adhesion phenomenon in the gas fluid, and the gas flows only into the gas passage 14 for low heat. be able to.

Further, since the primary air inlet is provided with the oxidation-enriched film (claim 5), the oxygen concentration can be increased and stable combustion can be performed even with a small amount of air. Further, since the area of the flame hole for strong flame is set to 5 times or less of the area of flame hole for weak flame (claim 6), it is possible to perform combustion with a flame hole load suitable for combustion.

[Brief description of drawings]

FIG. 1 is a cutaway plan view of a main part of a first embodiment of the present invention.

FIG. 2 is a sectional left side view of the whole Embodiment 1 of the present invention.

3A and 3B are a front view and a cut left side view of a part of FIG.

FIG. 4 is a left side view of a part of FIG.

5 is a cutaway plan view of another state of FIG. 1. FIG.

FIG. 6 is a cutaway plan view of a main part of a second embodiment of the present invention.

FIG. 7 is a cutaway plan view of another state of FIG.

FIG. 8 is a cutaway plan view of the essential parts of Embodiment 3 of the present invention.

9 is a cutaway plan view of another state of FIG. 8. FIG.

FIG. 10 is a left side view of a conventional example.

11A and 11B are a left side view and a plan view of a part of FIG.

12A and 12B are a left side view and a plan view of another part of FIG.

13A and 13B are left side views of other conventional examples.

[Explanation of symbols]

 11 Gas Burner Main Body 14 Low Fire Gas Flow Path 15 High Fire Gas Flow Path 16 Burner Head 17 Flame Hole 19 Gas Burner 39 Movable Nozzle 44 Switching Means 56 Adjusting Means 62 Shutter 64 Switching Means 66 Control Fluid 68 Switching Means

Claims (6)

[Claims] 1. A gas burner comprising a gas burner body having an interior divided into a low-fire gas passage and a high-fire gas passage, and a burner head mounted on the gas burner body and having a plurality of flame holes formed therein. A gas combustor comprising: an adjusting means for adjusting the heating power of the gas burner; and a switching means for switching the gas supply between the both gas flow paths and the low-fire gas flow path according to the adjustment of the adjusting means. 2. The gas combustion device according to claim 1, wherein the switching means comprises a movable nozzle. 3. The gas combustion apparatus according to claim 1, wherein the switching means comprises a shutter that opens and closes the high-fire gas passage. 4. The gas combustion apparatus according to claim 1, wherein the switching means is composed of a control fluid that induces a side wall adhesion phenomenon in the gas fluid. 5. The gas combustion device according to claim 4, wherein an oxidation-enriched film is provided at the primary air inlet of the gas burner. 6. The gas combustion apparatus according to claim 1, wherein the area of the flame holes for strong flame is 5 times or less the area of the flame holes for low flame.