CN109469900B - Burner head and burner comprising same - Google Patents
Burner head and burner comprising same Download PDFInfo
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- CN109469900B CN109469900B CN201811603784.1A CN201811603784A CN109469900B CN 109469900 B CN109469900 B CN 109469900B CN 201811603784 A CN201811603784 A CN 201811603784A CN 109469900 B CN109469900 B CN 109469900B
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- burner
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- 241000237942 Conidae Species 0.000 claims abstract description 58
- 238000003491 array Methods 0.000 claims abstract description 29
- 238000002485 combustion reaction Methods 0.000 claims abstract description 25
- 239000007789 gas Substances 0.000 claims description 161
- 238000001514 detection method Methods 0.000 claims description 35
- 238000005192 partition Methods 0.000 claims description 34
- 230000002093 peripheral effect Effects 0.000 claims description 24
- 239000002737 fuel gas Substances 0.000 claims description 22
- 230000008878 coupling Effects 0.000 claims 1
- 238000010168 coupling process Methods 0.000 claims 1
- 238000005859 coupling reaction Methods 0.000 claims 1
- 238000009434 installation Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 239000006185 dispersion Substances 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Substances N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/02—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/46—Details, e.g. noise reduction means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/46—Details, e.g. noise reduction means
- F23D14/48—Nozzles
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/46—Details, e.g. noise reduction means
- F23D14/62—Mixing devices; Mixing tubes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23Q—IGNITION; EXTINGUISHING-DEVICES
- F23Q13/00—Igniters not otherwise provided for
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Gas Burners (AREA)
Abstract
The utility model discloses a burner head and a gas burner comprising the burner head, which comprises a burner body, wherein a gas joint is arranged in the center of the burner body and is connected with a gas pipeline, the burner body is also provided with a combustion head, the combustion head is a circular truncated cone shell, the diameter of the radial section of the circular truncated cone shell from the inner end to the outer end is gradually increased, the gas joint is axially arranged at one side of the inner end of the circular truncated cone shell, a baffle plate is further arranged at the position where the gas joint is connected with the inner end of the circular truncated cone shell, and a plurality of gas holes are arranged on the baffle plate; the circumference wall of the round table shell is provided with a plurality of groups of air hole arrays which are axially extended, and each air hole array is provided with a plurality of air holes which are radially distributed.
Description
Technical Field
The utility model relates to the field of gas combustion equipment, in particular to a burner head and a burner comprising the burner head.
Background
In the technical field of gas burners and gas burners, stable combustion requires uniform mixing of a proper amount of air and gas, so that nitrogen oxides can be greatly reduced, and the national specified emission standard is achieved. The power of the gas burner and the gas burner needs to be adjusted in the production process, so that the production process requirements are met. When the power conversion of some gas burners and gas burners is large, the requirements of stable combustion cannot be met, the phenomenon of fire failure easily occurs, and the production is influenced.
The publication CN206112921U discloses a multi-stage air-distributed low-nitrogen burner. The low-nitrogen burner comprises a burner body and a burner head outer shell, wherein an ignition gas channel, a main gas cavity, a primary air channel, a tertiary air channel and a secondary air channel are sequentially arranged in a cavity of the burner body from inside to outside; the lower part of the burner body is provided with a primary air inlet, a secondary air inlet and a tertiary air inlet, the air outlet end of the main gas cavity is provided with a gas nozzle, the outer side of the gas nozzle is provided with a conical primary air distribution disc, the air outlet of the secondary air channel is provided with a secondary air injection pipe, and the air outlet of the tertiary air channel is provided with a tertiary air cyclone; a main gas inlet is arranged above the front end of the main gas cavity. According to the utility model, the temperature of the flame central area is reduced by using the staged combustion of the fuel gas and the air, the generation of NOx is reduced, the concentration distribution of the fuel gas is realized, and the environmental pollution is avoided.
In the patent, a central gas gun is arranged in the main gas gun, the central gas gun extends out of the primary air distribution disc, and fuel gas in the central gas gun is converged with air at the front end of the primary air distribution disc, so that certain hysteresis is provided when the fuel gas and the air are converged, the convergence cannot be completed in the first time, and the air and fuel gas ratio cannot be quickly adjusted to an optimal value when the power of the burner is adjusted.
Disclosure of Invention
In order to solve the technical problems, one of the purposes of the utility model is to provide a burner head, wherein a plurality of groups of air hole arrays are arranged on the side wall of a circular truncated cone shell of a burner head, so that air and fuel gas are respectively divided into a plurality of high-speed small airflows in the inner cavity of the circular truncated cone shell through the air holes, then the small airflows of air and the small airflows of fuel gas are crossed and are mixed in layers, the mixing requirements of the air and the fuel gas required by low power and high power are met, the fuel gas is combusted stably, and the phenomenon of fire failure does not occur.
In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:
the burner head comprises a burner body, wherein an ignition electrode perforation for plugging an ignition electrode and a detection electrode perforation for detecting an electrode are formed in the burner body, a gas connector is arranged in the center of the burner body, the gas connector is connected with a gas pipeline, a combustion head is further arranged on the burner body, the combustion head is a circular truncated cone shell, the diameters of the radial sections of the two ends of the circular truncated cone shell along the axial direction are unequal, the diameter of the radial section of the circular truncated cone shell from the inner end to the outer end is gradually increased, the gas connector is axially arranged on one side of the inner end of the circular truncated cone shell, the gas connector is a cavity with one open end, the other end of the gas connector is connected with the circular truncated cone shell, the gas pipeline is inserted into the cavity of the gas connector, a partition plate is further arranged at the position where the gas connector is connected with the inner end of the circular truncated cone shell, and a plurality of gas holes are formed in the partition plate; the circular truncated cone comprises a circular truncated cone body and is characterized in that a plurality of groups of air hole arrays which extend along the axial direction are arranged on the peripheral wall of the circular truncated cone body, a plurality of air holes which are distributed along the radial direction are distributed on each air hole array, the section of each air hole array is perpendicular to the central axis of the circular truncated cone body, and the air holes close to the outer end of the circular truncated cone body are larger than the air holes close to the inner end of the circular truncated cone body. The ignition electrode is electrified to ignite, so that the mixture of air and fuel gas is combusted, and the detection electrode senses flame current.
Preferably, the axis of the air hole points to the central axis of the circular truncated cone shell, the air is accelerated, subdivided and redirected after passing through the air hole, and simultaneously converges to the central axis of the circular truncated cone shell, so that the air and the fuel gas are fully converged near the central axis of the circular truncated cone shell, no matter the flow is large or small, the fuel gas fully mixed with the air is arranged at the central part, and the phenomenon of fire failure is avoided. Preventing insufficient air flow dispersion combustion.
Preferably, the partition plate is bent from the circumferential surface to the center towards the outer end of the circular truncated cone shell by a certain radian, namely the center of the partition plate and the circumferential edge of the partition plate are positioned on different sections, the center of the partition plate is positioned on the inner side of the outer end of the circular truncated cone shell, and the circumferential edge of the partition plate is arranged at the connection position of the fuel gas connector and the circular truncated cone shell. The center of the baffle is bent by a certain radian, so that the gas can be conveniently converged when entering the inner cavity of the circular truncated cone shell through the gas hole in the baffle, the horizontal entering direction of the gas is changed, the gas is converged towards the central axis of the circular truncated cone shell, and the next step of convergence with the air flow in the circular truncated cone shell is facilitated.
Preferably, at least one group of gas hole arrays which are distributed circularly are arranged on the partition board around the center of the partition board, a plurality of gas holes which have the same diameter and are uniformly distributed around the center of the partition board are arranged on each gas hole array, and the diameters of the gas holes on different groups of gas hole arrays are equal or gradually increased from the center of the partition board to the direction of the peripheral surface. The fuel gas is accelerated, subdivided, redirected and diffused after passing through the fuel gas holes.
More preferably, the gas holes in the gas hole arrays of different groups have gradually increasing diameters in a direction from the center of the separator toward the peripheral surface. Through setting up like this, during the installation, pass ignition electrode perforation to with gas pipeline and gas connector's inner chamber intercommunication, thereby discharge in the gas hole on the gas combustible gas hole array, discharge in the air hole of air round platform casing, the gas hole is by baffle center to the direction of circumference increase gradually, thereby the air-out volume of outer gas hole when making gas and air mixing is big, guarantee sufficient gas volume, be favorable to quick ignition, guarantee the stability of peripheral flame simultaneously, guarantee when adjusting power that peripheral flame is difficult to be blown out by too big air current.
Preferably, the diameters of the air holes on each air hole array are the same and are uniformly distributed around the central axis of the circular table shell at equal intervals.
Preferably, the diameters of the air holes on the air hole arrays of different groups gradually increase from the inner end to the outer end of the circular table shell. The aperture of the air hole is gradually increased from the inner end to the outer end, so that the air quantity of the inner air hole close to the inner end of the circular truncated cone shell is small when gas and air are mixed, the ignition is facilitated, the combustion is not easy to be blown out by stronger air flow, the ignition reliability is improved, the air is respectively divided into a plurality of high-speed small air flows in the inner cavity of the circular truncated cone shell through the air hole and the gas by arranging a plurality of groups of air hole arrays, then the small air flows and the small air flows of the gas are crossed and are mixed hierarchically, the gas and the air are mixed repeatedly, the mixing uniformity of the gas and the air is improved, the gas combustion is more complete, the waste of the gas and the generation of harmful gas are reduced, and the device is energy-saving and environment-friendly.
Preferably, the direction from the inner end to the outer end of the circular truncated cone shell is that an air hole array close to the outer end of the circular truncated cone shell is an outer layer air hole array, an air hole array close to the inner end of the circular truncated cone shell is an inner layer air hole array, and at least one group of middle layer air hole arrays are arranged between the inner layer air hole array and the outer layer air hole array.
Preferably, the air hole apertures of one or more of the intermediate layer air hole arrays and the air hole apertures of the inner layer air hole arrays are equal. Only the maximum air output of the air holes at the outermost periphery is ensured, when the power of the burner is regulated to be large, the air holes at the outermost periphery can meet the requirement of large air flow, the air flow passing through the inner air array and the middle air hole array is not required to reach the requirement of high-power combustion proportion, the ignition time is saved, and meanwhile, the air hole apertures in the inner air array and the middle air hole array are small, so that the ignition stability is ensured.
Preferably, the ignition electrode perforation and the detection electrode perforation are respectively arranged at two sides of the peripheral wall of the circular truncated cone shell and penetrate through the peripheral wall, an ignition electrode cavity and a detection electrode cavity are further arranged at the outer side of the peripheral wall of the circular truncated cone shell, one end of the ignition electrode cavity and one end of the detection electrode cavity extend to the ignition electrode perforation and the detection electrode perforation respectively, and the other end of the ignition electrode cavity and the other end of the detection electrode cavity extend to the direction of the gas joint.
Preferably, the length of the ignition electrode cavity and the detection electrode cavity is greater than the length of the gas connector. Through the arrangement, most ignition electrodes and detection electrodes can be located in the ignition electrode cavity and the detection electrode cavity, and the installation stability of the ignition electrodes and the detection electrodes is guaranteed.
The second object of the utility model is to provide a burner, which comprises a burner body, an air pipeline, a gas pipeline, a burner nozzle, a flame guide pipe, an ignition electrode and a detection electrode, wherein the air pipeline is connected with the burner body, the gas pipeline is arranged in an inner cavity of the burner body, one end of the burner body is connected with the flame guide pipe, the burner nozzle is arranged in the inner cavity of the flame guide pipe, one end of the gas pipeline is connected with the gas joint, and the burner nozzle is any one of the burner nozzles.
Preferably, the outer end of the combustion head is provided with a boss section in an extending mode, the diameter of the outer wall of the boss section extending along the axial direction is kept unchanged, and the outer wall of the boss section is matched with the inner wall of the flame guide tube.
Preferably, the gap between the outer wall of the boss section and the inner wall of the flame guide tube is small, so that almost all air flows through the air holes.
More preferably, the outer wall of the boss section and the inner wall of the flame guide tube are mounted through interference fit, so that the outer wall of the boss section and the inner wall of the flame guide tube are kept in close contact, and air cannot flow out from between the outer wall of the boss section and the inner wall of the flame guide tube.
More preferably, the outer wall of boss section with the inner wall of flame guide pipe passes through recess and card post cooperation installation, the recess sets up on the outer wall of boss section, the card post sets up on the flame guide pipe inner wall, recess and card post cooperation connection can play the direction and install and prevent that the combustion head from taking place to shift and pivoted effect in the use.
Compared with the prior art, the utility model has the beneficial technical effects that:
according to the burner head disclosed by the utility model, the plurality of groups of air hole arrays are arranged on the side wall of the circular truncated cone shell of the burner head, and the partition plate with the gas hole arrays is arranged at the connecting position of the gas joint and the burner head, so that air and gas are respectively divided into a plurality of high-speed small airflows in the inner cavity of the circular truncated cone shell, then the air small airflows and the gas small airflows are crossed and are mixed in a layered manner, uniform and full mixing is realized, and as the air holes and the gas holes are axially symmetrical, the mixed gas of the air and the gas converges on the central axis of the circular truncated cone shell no matter the gas flow is large or small. When the power of the burner is regulated, air and gas are fully mixed near the central axis of the burner head, the mixed gas burns after the ignition electrode is electrified, the mixing requirement of the air and the gas required by low power and high power is met, the stable combustion of the gas of the burner with large regulation ratio is realized, and the phenomenon of flameout does not occur.
Drawings
FIG. 1 is a schematic view of a burner head according to the present utility model;
FIG. 2 is a schematic view of a burner according to the present utility model.
Reference numerals:
1. an air duct; 2. a gas pipeline; 3. a burner body; 3.1. a partition plate; 3.11. a gas hole; 3.2 air holes; 3.3 gas connector; 3.4. an ignition electrode cavity; 3.5. a detection electrode cavity; 3.6. a land section; 3.7. a round table shell; 4. a flame guide tube; 5. an ignition electrode; 6. and a detection electrode.
Detailed Description
The present utility model will be further described in detail with reference to the following examples, for the purpose of making the objects, technical solutions and advantages of the present utility model more apparent, but the scope of the present utility model is not limited to the following specific examples.
Example 1
As shown in fig. 1, a burner head comprises a burner body 3, wherein an ignition electrode perforation for plugging an ignition electrode 5 and a detection electrode perforation for detecting an electrode 6 are formed in the burner body 3, a gas joint 3.3 is arranged in the center of the burner body 3, the gas joint 3.3 is connected with a gas pipeline 2, a combustion head is further arranged on the burner body 3, the combustion head is a circular truncated cone shell 3.7, the diameters of the radial sections of the two ends of the circular truncated cone shell 3.7 along the axial direction are unequal, the diameter of the radial section of the circular truncated cone shell 3.7 from the inner end to the outer end is gradually increased, the gas joint 3.3 is axially arranged on one side of the inner end of the circular truncated cone shell 3.7, the gas joint 3.3 is a cavity with one end open, the other end of the gas joint 3.3 is connected with the circular truncated cone shell 3.7, the gas pipeline 2 is inserted into the cavity of the gas joint 3.3, a partition plate 3.1 is further arranged at the position where the gas joint 3.3 is connected with the inner end of the circular truncated cone shell 3.7, and a plurality of gas holes 3.11 are formed in the partition plate 3.1; a plurality of groups of air hole arrays which extend along the axial direction are arranged on the peripheral wall of the round table shell 3.7, a plurality of air holes 3.2 which are distributed along the radial direction are distributed on each air hole array, the section of each air hole array is perpendicular to the central axis of the round table shell 3.7, and the air holes 3.2 which are close to the outer end of the round table shell 3.7 are larger than the air holes 3.2 which are close to the inner end of the round table shell 3.7. Air enters the inner cavity of the circular truncated cone shell 3.7 after passing through the air hole 3.2, fuel gas enters the inner cavity of the circular truncated cone shell 3.7 after passing through the fuel gas hole 3.11, the ignition electrode 5 is electrified and ignited to burn the mixture of the air and the fuel gas, and the detection electrode 6 senses flame current.
The ignition electrode perforation and the detection electrode perforation are respectively arranged on two sides of the peripheral wall of the circular truncated cone shell 3.7 and penetrate through the peripheral wall, an ignition electrode cavity 3.4 and a detection electrode cavity 3.5 are further arranged on the outer side of the peripheral wall of the circular truncated cone shell 3.7, one end of the ignition electrode cavity 3.4 and one end of the detection electrode cavity 3.5 extend to the ignition electrode perforation and the detection electrode perforation respectively, and the other end of the ignition electrode cavity 3.4 and the other end of the detection electrode cavity 3.5 extend to the direction of the gas connector 3.3.
The axis of the air hole 3.2 points to the central axis of the round table shell 3.7, and air is accelerated, subdivided and redirected after passing through the air hole 3.2, and simultaneously converges towards the central axis of the round table shell 3.7, so that air and fuel gas are fully converged near the central axis of the round table shell 3.7, and insufficient air flow dispersion combustion is prevented.
The partition plate 3.1 is bent to a certain radian from the peripheral surface to the center towards the outer end of the circular truncated cone shell 3.7, namely, the center of the partition plate 3.1 and the peripheral edge of the partition plate 3.1 are positioned on different sections, the center of the partition plate 3.1 is positioned on the inner side of the outer end of the circular truncated cone shell 3.7, and the peripheral edge of the partition plate 3.1 is arranged at the connection position of the gas joint 3.3 and the circular truncated cone shell 3.7. The center of the baffle plate 3.1 is bent to a certain radian, so that gas can conveniently enter the inner cavity of the round table shell 3.7 from the gas hole 3.11 on the baffle plate 3.1, the converging effect is achieved, the horizontal entering direction of the gas is changed, the gas is converged towards the central axis of the round table shell 3.7, and the next step of converging with the air flow in the round table shell 3.7 is facilitated.
At least one group of gas hole arrays which are distributed circularly are arranged on the partition plate 3.1 around the center of the partition plate 3.1, a plurality of gas holes 3.11 which are identical in diameter and uniformly distributed around the center of the partition plate 3.1 are arranged on each gas hole array, and the diameters of the gas holes 3.11 on different groups of gas hole arrays are equal or gradually increased from the center of the partition plate 3.1 to the circumferential direction. The fuel gas is accelerated, subdivided, redirected and diffused after passing through the fuel gas holes 3.11. The air holes 3.2 on each air hole array have the same diameter and are uniformly distributed around the central axis of the circular table shell 3.7 at equal intervals.
The direction from the inner end to the outer end of the round table shell 3.7, an air hole array close to the outer end of the round table shell 3.7 is an outer layer air hole array, an air hole array close to the inner end of the round table shell 3.7 is an inner layer air hole array, and at least one group of middle layer air hole arrays are arranged between the inner layer air hole array and the outer layer air hole array. In this embodiment, two sets of middle layer air hole arrays are provided, the air hole aperture on the middle layer air hole array is equal to the air hole aperture 3.2 aperture on the inner layer air hole array, and the air hole aperture 3.2 aperture on the middle layer air hole array is smaller than the air hole aperture on the outer layer air hole array. The air holes 3.2 on the outer layer air hole array are the largest, only the largest air output of the air holes 3.2 on the outermost periphery is required to be ensured, when the power of the burner is adjusted to be large, the air holes 3.2 on the outermost periphery can meet the entering of large air flow, the air flow passing through the inner layer air array and the middle layer air hole array is not required to reach the requirement of high-power combustion proportion at the same time, the ignition time during power adjustment is saved, and meanwhile, the apertures of the air holes 3.2 in the inner layer air array and the middle layer air hole array are small, the ignition is facilitated, the ignition is not easy to be blown out by stronger air flow, and the ignition stability is ensured.
According to the burner nozzle, the side wall of the circular truncated cone shell 3.7 of the combustion head is provided with the plurality of groups of air hole arrays, the connecting position of the gas joint 3.3 and the combustion head is provided with the partition plate 3.1 with the gas hole arrays, so that air and gas are respectively divided into a plurality of high-speed small airflows in the inner cavity of the circular truncated cone shell 3.7, then the air small airflows and the gas small airflows are crossed and are mixed in a layered manner, uniform and full mixing is realized, and as the air holes 3.2 and the gas holes 3.11 are axially symmetrical, no matter the gas flow is high, and the mixed gas of the air and the gas is converged on the central axis of the circular truncated cone shell 3.7. When the power of the burner is regulated, air and gas are fully mixed near the central axis of the burner, the mixed gas burns after the ignition electrode 5 is electrified, the mixing requirements of the air and the gas required by low power and high power are met, the gas is stably combusted, and the phenomenon of flameout does not occur.
As shown in fig. 2, the utility model further provides a gas burner, which comprises a burner body, an air pipeline 1, a gas pipeline 2, a burner nozzle, a flame guiding pipe 4, an ignition electrode 5 and a detection electrode 6, wherein the air pipeline 1 is connected with the burner body, the gas pipeline 2 is arranged in an inner cavity of the burner body, one end of the burner body is connected with the flame guiding pipe 4, the burner nozzle is arranged in the inner cavity of the flame guiding pipe 4, one end of the gas pipeline 2 is connected with the gas joint 3.3, and the burner nozzle is any one of the burner nozzles. The outer end of the combustion head is provided with a boss section 3.6 in an extending mode, the diameter of the outer wall of the boss section 3.6 extending along the axial direction is kept unchanged, and the outer wall of the boss section 3.6 is matched with the inner wall of the flame guide tube 4. The gap between the outer wall of the boss section 3.6 and the inner wall of the flame guide tube 4 is small, so that almost all air flows through the air holes 3.2. The outer wall of the boss section 3.6 is mounted with the inner wall of the flame guide tube 4 through interference fit, so that the outer wall of the boss section 3.6 is tightly contacted with the inner wall of the flame guide tube 4, and air cannot flow out from between the outer wall of the boss section 3.6 and the inner wall of the flame guide tube 4.
Air enters the burner body from the air pipeline 1, then air flows into the flame guide pipe 4, because the clearance between the inner wall of the flame guide pipe 4 and the boss part matched end face of the outer end of the burner head is very small, the air can only enter the inner cavity of the burner head through the air holes 3.2 on the circumferential wall of the round table shell 3.7 of the burner head, and because the gas pipeline 2 is connected with the gas joint 3.3 of the burner head, the gas enters the gas joint 3.3 from the gas pipeline 2 and flows into the inner cavity of the burner head through the gas holes 3.11 on the partition plate 3.1, so that the gas and the air are mixed, the ignition electrode 5 is electrified and ignited to burn the mixture of the air and the gas, and the detection electrode 6 senses flame current.
Example 2
This embodiment only describes differences from the above-described embodiment, and the remaining technical features are the same as those of the above-described embodiment. In this embodiment, the center of the separator 3.1 is oriented in the circumferential direction, and the diameters of the gas holes 3.11 in the gas hole arrays of different groups are gradually increased. Through setting up like this, during the installation, pass ignition electrode 5 and fire the electrode perforation to with gas pipeline 2 and gas connect 3.3's inner chamber intercommunication, thereby discharge in the gas hole 3.11 on the gas combustible gas hole array, discharge in the air hole 3.2 of air round platform casing 3.7, gas hole 3.11 is by baffle 3.1 center to the direction of circumference increase gradually, thereby the air output of outer gas hole 3.11 when making gas and air mixing is big, guarantee sufficient gas volume, be favorable to quick ignition, guarantee the stability of peripheral flame simultaneously, guarantee when adjusting power that peripheral flame is difficult for being blown out by too big air current.
Example 3
This embodiment only describes differences from the above-described embodiment, and the remaining technical features are the same as those of the above-described embodiment. In this embodiment, the pore diameters of the air holes 3.2 on the air hole arrays of different groups gradually increase from the inner end to the outer end of the truncated cone housing 3.7. The aperture of the air hole 3.2 is gradually increased from the inner end to the outer end, so that the air quantity of the inner layer air hole 3.2 close to the inner end of the circular truncated cone shell 3.7 is small when gas and air are mixed, ignition is facilitated, the air is not easy to blow out by stronger air flow, the reliability of ignition is improved, the air is respectively divided into a plurality of high-speed small air flows in the inner cavity of the circular truncated cone shell 3.7 through the air hole 3.2 and the gas by arranging a plurality of groups of air hole arrays, then the small air flows and the small air flows are crossed and are mixed hierarchically, the gas and the air are mixed repeatedly, and the uniformity of mixing the gas and the air is improved, so that the gas is combusted more fully, the waste of the gas and the generation of harmful gas are reduced, and the air is energy-saving and environment-friendly.
Example 4
This embodiment only describes differences from the above-described embodiment, and the remaining technical features are the same as those of the above-described embodiment. In this embodiment, the length of the ignition electrode cavity 3.4 and the detection electrode cavity 3.5 is greater than the length of the gas connector 3.3. By means of the arrangement, the ignition electrode 5 and the detection electrode 6 can be mostly located in the ignition electrode cavity 3.4 and the detection electrode cavity 3.5, and the installation stability of the ignition electrode 5 and the detection electrode 6 is guaranteed.
Example 5
This embodiment only describes differences from the above-described embodiment, and the remaining technical features are the same as those of the above-described embodiment. In this embodiment, the outer wall of boss section 3.6 with the inner wall of flame guide tube 4 passes through recess and card post cooperation installation, the recess sets up on the outer wall of boss section 3.6, the card post sets up on the inner wall of flame guide tube 4, recess and card post cooperation connection can play the direction and install and prevent that the combustion head from taking place to shift and pivoted effect in the use.
Variations and modifications to the above would be obvious to persons skilled in the art to which the utility model pertains from the foregoing description and teachings. Therefore, the utility model is not limited to the specific embodiments disclosed and described above, but some modifications and changes of the utility model should be also included in the scope of the claims of the utility model. In addition, although specific terms are used in the present specification, these terms are for convenience of description only and do not constitute any limitation on the utility model.
Claims (8)
1. The burner head comprises a burner body, wherein an ignition electrode perforation for plugging an ignition electrode and a detection electrode perforation for detecting an electrode are formed in the burner body, a gas joint is arranged in the center of the burner body and is connected with a gas pipeline, and the burner head is characterized in that the burner body is also provided with a combustion head, the combustion head is a circular truncated cone shell, the diameters of the radial sections of the two ends of the circular truncated cone shell along the axial direction are unequal, the diameter of the radial section of the circular truncated cone shell from the inner end to the outer end is gradually increased, the gas joint is axially arranged on one side of the inner end of the circular truncated cone shell, a baffle plate is further arranged at the position where the gas joint is connected with the inner end of the circular truncated cone shell, and a plurality of gas holes are formed in the baffle plate; a plurality of groups of air hole arrays which are axially extended are arranged on the peripheral wall of the round table shell, a plurality of air holes which are radially distributed are arranged on each air hole array, and the air holes which are close to the outer end of the round table shell are larger than the air holes which are close to the inner end of the round table shell;
the center of the partition plate and the peripheral edge of the partition plate are positioned on different sections, the center of the partition plate is positioned on the inner side of the outer end of the circular truncated cone shell, and the peripheral edge of the partition plate is arranged at the connection position of the fuel gas joint and the circular truncated cone shell;
the ignition electrode perforation and the detection electrode perforation are respectively arranged at two sides of the peripheral wall of the circular truncated cone shell and penetrate through the peripheral wall, an ignition electrode cavity and a detection electrode cavity are further arranged at the outer side of the peripheral wall of the circular truncated cone shell, one end of the ignition electrode cavity and one end of the detection electrode cavity extend to the ignition electrode perforation and the detection electrode perforation respectively, and the other end of the ignition electrode cavity and the other end of the detection electrode cavity extend to the direction of the gas joint;
the length of the ignition electrode cavity and the detection electrode cavity is greater than that of the gas connector.
2. A burner head according to claim 1, wherein at least one group of gas hole arrays are arranged on the partition plate around the center of the partition plate, each gas hole array is provided with a plurality of gas holes with the same diameter and uniformly distributed around the center of the partition plate, and the diameters of the gas holes on different groups of gas hole arrays are equal or gradually increased in the direction from the center of the partition plate to the peripheral surface.
3. A burner head according to claim 1 wherein said air holes in each of said air hole arrays are of equal diameter and equally spaced about said circular table housing central axis.
4. A burner head according to claim 3, wherein the air holes in the array of air holes of different groups have progressively larger diameters from the inner end to the outer end of the cone housing.
5. A burner head according to claim 3, wherein the array of air holes near the outer end of the circular truncated cone housing is an outer array of air holes in the direction from the inner end to the outer end of the circular truncated cone housing, the array of air holes near the inner end of the circular truncated cone housing is an inner array of air holes, and at least one set of intermediate air hole arrays is provided between the inner array of air holes and the outer array of air holes.
6. A burner head according to claim 5 wherein the air hole apertures of one or more of said intermediate air hole arrays and the air hole apertures of said inner air hole array are equal.
7. A gas burner, including combustor body, air duct, gas duct, combustor nozzle, flame guide pipe, ignition electrode and detection electrode, the air duct with the combustor body coupling, gas duct arranges in the inner chamber of combustor body, the one end of combustor body with flame guide pipe is connected, the combustor nozzle is arranged in the inner chamber of flame guide pipe, the one end of gas duct with the gas connects and is connected, its characterized in that, the combustor nozzle is the combustor nozzle of any one of claims 1-6.
8. A gas burner as claimed in claim 7, wherein the outer end of the burner head is provided with a boss section extending therefrom, the diameter of the outer wall of the boss section extending in the axial direction is kept constant, and the outer wall of the boss section is fitted to the inner wall of the flame guide tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811603784.1A CN109469900B (en) | 2018-12-26 | 2018-12-26 | Burner head and burner comprising same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811603784.1A CN109469900B (en) | 2018-12-26 | 2018-12-26 | Burner head and burner comprising same |
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| Publication Number | Publication Date |
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| CN109469900A CN109469900A (en) | 2019-03-15 |
| CN109469900B true CN109469900B (en) | 2024-03-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811603784.1A Active CN109469900B (en) | 2018-12-26 | 2018-12-26 | Burner head and burner comprising same |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111500966A (en) * | 2020-06-16 | 2020-08-07 | 江苏科环新材料有限公司 | Flame spray gun mixer |
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| JP5160140B2 (en) * | 2007-04-27 | 2013-03-13 | 株式会社パロマ | Burner |
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| US5839891A (en) * | 1997-01-13 | 1998-11-24 | Beckett Gas, Inc. | Power gas burner |
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