CN114198747A

CN114198747A - A kind of burner

Info

Publication number: CN114198747A
Application number: CN202111550650.XA
Authority: CN
Inventors: 徐建波
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-12-17
Filing date: 2021-12-17
Publication date: 2022-03-18
Anticipated expiration: 2041-12-17
Also published as: CN114198747B

Abstract

The invention relates to a burner, which comprises a burner, a blower, a gas component and a furnace plate, wherein a premixing cavity is formed inside the burner, the blower is used for introducing air into the premixing cavity, the gas component is used for introducing gas into the premixing cavity, the furnace plate is arranged in the furnace end and positioned at the upper part of the premixing cavity, the combustor also comprises a regulator which can regulate the air output of the air blower according to the gas flow of the gas component and enable the gas flow to be matched with the air output, the regulator can enable the air quantity to be matched with the gas quantity, the air quantity and the gas quantity to achieve better proportion, excessive air or excessive gas does not exist, the premixing effect of the gas and the air is good, the combustion is more sufficient, the heat efficiency is higher, and the combustor can work stably, and some noises such as howling and resonance of the combustor are suppressed, namely, the combustor can work with low noise even if no silencing component such as a silencing plate is arranged.

Description

A kind of burner

Technical Field

The present invention relates to a burner.

Background

Almost all infrared burners using blowers on the market today are external circulation burners, i.e. blast burners. The heat discharged by the combustion is absorbed by the heat absorbing material, so that the heat absorbing material generates high temperature and then radiates to a heat receiving device (such as a cooker), thereby achieving the purpose of heating. However, the thermal efficiency of the burner can only reach more than forty percent, and is improved by more than twenty percent compared with the common burner, but the structure of the burner is complex, and the failure rate in use is high.

At present, the inner circulation infrared burner is not provided with a blower, and only has an atmospheric infrared burner, so that the power of the inner circulation infrared burner can only be very small, and if the power of the inner circulation infrared burner is large, the volume of the inner circulation infrared burner is very large, and the practical value is not large.

In order to solve the above problems, the applicant designs a combustor, which is a burner disclosed in the chinese invention patent application with patent application No. CN202110670425.3 (publication No. CN113357629A), and comprises a furnace plate, a furnace end and a gas nozzle, wherein a premixing cavity is formed inside the furnace end, the gas nozzle is communicated with the premixing cavity, the furnace plate is arranged in the furnace end and located at the upper part of the premixing cavity, the furnace plate is provided with a plurality of through holes penetrating through the wall thickness of the furnace plate, a silencing plate is transversely arranged in the premixing cavity and located below the furnace plate, and the silencing plate is provided with a plurality of silencing holes penetrating through the wall thickness of the silencing plate.

The applicant has designed such burners to have a high thermal efficiency, but the applicant has sought a burner involving fewer components, at a lower cost and with a higher thermal efficiency.

Disclosure of Invention

The invention aims to solve the technical problem of providing a combustor which does not need to be provided with an anechoic plate and has low noise aiming at the current situation of the prior art.

The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides a combustor, includes furnace end, air-blower, gas subassembly and stove board, the inside premixing chamber that is formed with of furnace end, the air-blower is arranged in leading into the air to premixing chamber, the gas subassembly is arranged in leading into the gas to premixing chamber, the stove board sets up in the furnace end and lies in premixing chamber's upper portion, its characterized in that: the combustor still includes can be according to the air output of the gas flow regulation air-blower of gas subassembly, make gas volume and air output looks adaptation's regulator.

In the above scheme, in order to enable the regulator to accurately regulate the gas quantity and the air quantity to be matched, the gas assembly comprises a gas source, a gas nozzle and a gas valve arranged on a gas channel between the gas source and the gas nozzle and used for controlling the gas flow, and the gas nozzle is communicated with the premixing cavity;

the regulator is including sensor and controller, the sensor links to each other with the input of controller, the output of controller links to each other with the motor of air-blower, the angle sensor of sensor for can detecting the opening angle of gas valve or for the flow sensor that can detect the gas flow in the conveying pipeline, the controller can be according to the operating frequency of the voltage of the motor of sensor control air-blower and/or motor. The controller of the invention can adjust the wind pressure of the blower according to the gas quantity in real time, so that the air quantity and the gas quantity are always in the best proportion.

Preferably, the pressure of the mixed gas in the premixing cavity at the furnace plate is required to ensure that the combustion speed of the gas is higher than the backfire combustion speed, so that the burner can be suitable for all infrared combustion furnace plates.

In order to improve the heating effect of the cooker, the top of the furnace end is also provided with a support for placing the cooker, the support can move up and down relative to the furnace end, and the support is fixed with the furnace end through a connecting piece after moving in place. Thus, the distance between the cookware and the oven plate is adjustable, so that the cookware is in the best heated position.

The support can have multiple structural style, for example include the support unit of a plurality of L shapes along furnace end circumference interval arrangement, simple structure ground, the support is cyclic annular, the lower part cover of support is established on the furnace end, be equipped with first connecting hole on the support, be equipped with the second connecting hole that can correspond with first connecting hole on the furnace end, the connecting piece passes first connecting hole and second connecting hole in order to fix support and furnace end mutually, first connecting hole or second connecting hole have at least two and interval setting from top to bottom.

Or, the support is cyclic annular, the lower part cover of support is established on the furnace end, be equipped with first connecting hole on the support, be equipped with the second connecting hole that can correspond with first connecting hole on the furnace end, the connecting piece passes first connecting hole and second connecting hole in order to fix support and furnace end mutually, first connecting hole and/or second connecting hole are vertical extension's slot hole. After the support is moved to a proper height, the corresponding first connecting hole and the second connecting hole are fixed.

In order to prevent the phenomenon that combustion flame is uneven, transversely be equipped with the first plate body that is located the stove board below in the premixing chamber, this first plate body is close to the upper portion setting of premixing chamber, forms the runner that supplies the gas mixture to flow out between the inner wall of the periphery edge of first plate body and furnace end. Because the blocking of first plate body, the bottom that the gas mixture can scatter the stove board along the periphery of first plate body along four directions like this for flame homogeneous combustion avoids appearing unilateral burning's phenomenon.

Preferably, the axis of the first plate body coincides with the axis of the oven plate, so that the mixed gas can flow to the oven plate more uniformly.

In order to further enable the mixed gas to uniformly flow to the furnace plate, a second plate body located below the first plate body is arranged in the premixing cavity, the second plate body is transversely arranged, the periphery of the second plate body is in contact with the inner wall of the furnace end, and a gas passing hole is formed in the position, close to the center, of the second plate body. The gas mixture can be blockked by the second plate body earlier like this, and whole gather together air vent department and flow out again, then along the periphery of first plate body along scattering, the homogeneity of air current is better.

The burner also comprises a pipe body with an open end, the open end of the pipe body is communicated with the premixing cavity of the burner, and the pipe body is provided with an air inlet communicated with the air outlet end of the blower;

the open end of the pipe body adjacent to the pipe body is provided with a gas arranging chamber, the gas arranging chamber is provided with a gas inlet hole for air in the pipe body to enter and a gas outlet hole for communicating the gas arranging chamber with the premixing cavity, and the gas nozzle is positioned in the gas arranging chamber. Air firstly enters the pipe body to be compressed, then flows out through the air inlet, then enters the air regulating chamber to be expanded, at the moment, the air flow is straightened and mixed with the gas, and finally flows out through the air outlet in a compressed mode, so that the gas and the air are preliminarily mixed and then enter the premixing cavity to be further mixed, and the mixing uniformity of the gas and the air is improved.

In order to form an air-arranging chamber in the pipe body, along the flow direction of the air flow in the pipe body, a first partition plate and a second partition plate are sequentially arranged in the pipe body at intervals, the second partition plate faces the open end of the pipe body, the air-arranging chamber is defined by the first partition plate, the second partition plate and the inner wall of the pipe body, a plurality of first through holes are formed in the first partition plate to form the air inlet holes, and a second through hole for mixed gas to flow out is formed in the second partition plate to form the air outlet holes. In addition, a plurality of first through holes are formed in the first partition plate, so that air can uniformly flow into the air conditioning chamber through the first through holes.

Preferably, the second through hole corresponds to the gas nozzle, so that the gas flow smoothly flows out.

Compared with the prior art, the invention has the advantages that: the invention can make the air quantity and the gas quantity matched because of the design of the regulator, the air quantity and the gas quantity can reach better proportion, excessive air or excessive gas is not generated, the premixing effect of the gas and the air is good, the combustion is more sufficient, the heat efficiency is higher, the burner can stably work, and noises such as squeaking and resonance of the burner are suppressed, namely, the burner can work with low noise even if no noise elimination parts such as a noise elimination plate are arranged.

Drawings

FIG. 1 is a cross-sectional view of an embodiment of the present invention;

FIG. 2 is a cross-sectional view of the tubular body of FIG. 1;

FIG. 3 is a sectional view taken along line A-A of FIG. 2;

FIG. 4 is a sectional view taken along line B-B of FIG. 2;

fig. 5 is a schematic structural view of the first separator.

Fig. 6 is a schematic diagram of the operation of the regulator.

Detailed Description

The invention is described in further detail below with reference to the accompanying examples.

As shown in fig. 1 to 5, the burner of the preferred embodiment includes a burner 1, an air blower 2, a gas component, a burner plate 3 and a regulator 4, a premixing chamber 11 is formed inside the burner 1, the air blower 2 is used for introducing air into the premixing chamber 11, the gas component is used for introducing gas into the premixing chamber 11, and the burner plate 3 is disposed in the burner 1 and located at the upper portion of the premixing chamber 11.

The gas assembly comprises a gas source 51, a gas nozzle 52 and a gas valve 53, wherein the gas valve 53 is arranged on a gas channel 54 between the gas source 51 and the gas nozzle 52, the gas valve 53 is used for controlling the gas flow, and the gas nozzle 52 is communicated with the premixing cavity 11.

As shown in fig. 6, the regulator 4 can regulate the air output of the blower 2 according to the gas flow of the gas component, so that the gas flow and the air output are matched. The regulator 4 comprises a sensor and a controller, the output end of the sensor is connected with the input end of the controller, and the output end of the controller is connected with the motor of the blower 2. In this embodiment, the sensor adopts angle sensor, can detect the opening angle of gas valve 53 and send signal for the controller, and the controller confirms gas conduction angle according to the opening angle of gas valve 53, and then confirms gas flow, adjusts the motor voltage of control air-blower 2 through gas flow to control the air output of air-blower 2. Of course, the working frequency of the motor of the blower 2 can be adjusted according to the gas flow to adjust the air output; or the voltage and the working frequency of the motor of the air blower 2 are simultaneously adjusted according to the gas flow so as to adjust the air output.

That is, when the gas flow rate increases, the voltage of the motor of the blower 2 and/or the operating frequency of the motor increases, and the air output of the blower increases accordingly. However, because the furnace plates are different in type and style, the air output of the fan is different under the same gas flow, but for the burner determined by the furnace plates, the ratio between the gas flow and the air output can be determined through experiments and then can be realized by setting in the controller. Therefore, no furnace plate is adopted, and the corresponding proportion is selected finally with the aim of eliminating noises such as squeal and resonance and the like during combustion of the combustor. Of course, the sensor may also be a flow sensor, i.e. the motor voltage controlling the blower 2 is regulated directly as a function of the gas flow.

The controller can adopt a circuit formed by the existing chip, and can also adopt the existing PLC controller or PC.

In addition, the pressure of the mixed gas in the premixing chamber 11 at the furnace plate 3 needs to ensure that the combustion speed of the gas is higher than the backfire combustion speed, so that the burner can be suitable for all infrared combustion furnace plates. Specifically, the pressure at any flow path, whether air, gas or a mixture of the two, is required to ensure that the combustion rate of the gas at the furnace plate 3 is greater than the backfire combustion rate. Because the design of the airflow passage section of the burner reduces the airflow pressure along with the flowing of the airflow, the airflow pressure is minimum when the airflow flows to the furnace plate 3, and as long as the airflow pressure at the position can ensure that the gas burning speed is higher than the backfire burning speed, the airflow pressures of other sections can also meet the requirement.

As shown in fig. 1, a bracket 6 for holding a pot is further provided at the top of the burner 1, the bracket 6 can move up and down relative to the burner 1, and the bracket 6 is fixed with the burner 1 through a connecting piece 61 after moving in place. Thus, the distance between the cookware and the oven plate 3 is adjustable, so that the cookware is in the best heated position.

In this embodiment, the support 6 is annular, the lower portion of the support 6 is sleeved on the furnace end 1, the support 6 is provided with a first connecting hole 60, the furnace end 1 is provided with a second connecting hole 10 corresponding to the first connecting hole 60, the connecting member 61 penetrates through the first connecting hole 60 and the second connecting hole 10 to fix the support 6 and the furnace end 1, and the first connecting hole 60 is at least two and is arranged at an upper and lower interval. After the bracket 6 is moved to a suitable height, the corresponding first connection hole 60 and the second connection hole 10 are fixed.

Of course, the first connection hole 60 may be designed as one, and the second connection hole 10 may be designed as at least two spaced apart vertically. The connecting member 61 may be a bolt and the second connecting hole 10 may be a threaded hole. Alternatively, both the first connection hole 60 and the second connection hole 10 are one, and the first connection hole 60 and/or the second connection hole 10 are long holes.

In addition, the support 6 is not limited to the structural form of the present embodiment, and may include a plurality of inverted L-shaped support units arranged at intervals in the circumferential direction of the burner 1, for example.

As shown in fig. 1, a first plate body 71 and a second plate body 72 are transversely disposed in the premix chamber 11, the first plate body 71 and the second plate body 72 are spaced from each other up and down, the first plate body 71 is located above the second plate body 72, and the first plate body 71 is located below the furnace plate 3. The first plate 71 is disposed near the upper portion of the premixing chamber 11, and a flow passage 73 for flowing out a mixture (i.e., a mixture of gas and air) is formed between the outer periphery of the first plate 71 and the inner wall of the burner head 1, preferably, the axis of the first plate 71 coincides with the axis of the burner plate 3.

The outer periphery of the second plate 72 contacts with the inner wall of the burner 1, and a gas passing hole 721 is formed in the second plate 72 near the center. In this embodiment, a ring of bosses 111 are provided on the side wall of the premix chamber 11, and during assembly, the second plate body 72 rests on the bosses 111 of the premix chamber 11, and then the first plate body 71 and the second plate body 72 are fixed by the connecting rod 74, so as to fix the first plate body 71.

The arrangement of the first plate body 71 and the second plate body 72 enables the mixed gas in the premixing cavity 11 to be blocked by the second plate body 72 firstly, to be gathered to the air holes 721 and then to flow out, and then to be scattered to the bottom of the furnace plate 3 along the periphery of the first plate body 71, so that the flame is uniformly combusted, and the phenomenon of unilateral combustion is avoided.

The air blower 2 directly blows air into the premixing cavity to cause relatively disordered airflow in the premixing cavity 11, so the burner further comprises a pipe body 8 with an open end, the open end of the pipe body 8 is communicated with the premixing cavity 11 of the burner 1, and the pipe body 8 is provided with an air inlet 81 communicated with the air outlet end of the air blower 2.

As shown in fig. 1 to 4, along the flow direction of the air flow, a first partition 82 and a second partition 83 are sequentially arranged in the tube 8 at intervals, and a gas-disposing chamber 84 is defined between the first partition 82 and the second partition 83 and the inner wall of the tube 8, the gas nozzle 52 is located in the gas-disposing chamber 84, one end of the gas channel 54 is located outside the tube 8 and connected to the gas source 51, and the other end thereof extends into the gas-disposing chamber 84 and connected to the gas nozzle 52, the first partition 82 is provided with a plurality of first through holes 821 for allowing air to enter the gas-disposing chamber 84, i.e. the first through holes 821 are used as air inlets, the second partition 83 is provided with a second through hole 831 for allowing the mixed gas to flow out, i.e. the second through hole 831 is used as an air outlet, the second partition 83 faces the open end of the tube 8, and the gas nozzle 52 faces the second through hole 831. Air firstly enters the pipe body 8 to be compressed, then uniformly flows out through the first through hole 821, then enters the air regulating chamber 84 to be expanded and mixed with gas, and finally flows out through the second through hole 831 in a compressed mode, so that the gas and the air are well mixed, and then enter the premixing cavity 11 to be further mixed, and the mixing uniformity of the gas and the air is improved.

In the above, it is mentioned that "the pressure of the air flow needs to ensure that the combustion speed of the gas is higher than the backfire combustion speed", because the pressure of the air flow is related to the volume, shape, combustion power and temperature of the burner, and the volume, shape, combustion power and temperature of each burner are different, the pressure of the air flow making the combustion speed of the gas higher than the backfire combustion speed is different for each burner. Specifically, in the case where the volume, shape, furnace plate, and the like of the burner are determined, it is possible to design the gas flow path. The cooperation of the first plate and the second plate as described above, and the addition of the first partition plate 82, the second partition plate 83, and the gas regulating chamber 84. The mutual ingenious combination of the two makes the flowing air current increase the pressure in the contraction section and decrease the pressure in the expansion section, straightens the flowing air direction, and can meet the requirement that the pressure of the air current ensures that the combustion speed of the gas is higher than the backfire combustion speed. By adopting the design, the manufacturing error and the assembly error of the airflow flow path can be eliminated by adjusting the first plate body and the second plate body and/or the first partition plate and the second partition plate, so that the manufactured airflow flow path meets the pre-designed requirement.

That is, the structure of the burner of this embodiment, after the manufacturing is completed, can adjust the installation position of the first plate 71 and the second plate 72 in the furnace end 1, the installation position of the first partition 82 and the second partition 83 in the pipe body 8, and change the stroke of the expansion section or the contraction section according to the structure of the burner after the manufacturing is completed, the combustion power, the combustion temperature, and other factors, so that the stroke of the air flow flowing through is adjusted, and after the multiple times of debugging, until the pressure of the air flow meets the requirement: can ensure that the combustion speed of the fuel gas is higher than the backfire combustion speed. And the similar burner can be manufactured according to the method.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present invention and to simplify the description, but are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and that the directional terms are used for purposes of illustration and are not to be construed as limiting, for example, because the disclosed embodiments of the present invention may be oriented in different directions, "lower" is not necessarily limited to a direction opposite to or coincident with the direction of gravity.

Claims

1. The utility model provides a combustor, includes furnace end (1), air-blower (2), gas subassembly and stove board (3), furnace end (1) inside is formed with mixes chamber (11) in advance, air-blower (2) are arranged in leading to air in mixing chamber (11) in advance, gas subassembly is arranged in leading to the gas in mixing chamber (11) in advance, stove board (3) set up in furnace end (1) and are located the upper portion of mixing chamber (11) in advance, its characterized in that: the combustor also comprises an air outlet quantity adjusting device (4) which can adjust the air outlet quantity of the air blower (2) according to the gas flow of the gas component and enables the gas quantity and the air outlet quantity to be matched.

2. The burner of claim 1, wherein: the gas assembly comprises a gas source (51), a gas nozzle (52) and a gas valve (53) which is arranged on a gas channel (54) between the gas source (51) and the gas nozzle (52) and is used for controlling the gas flow, and the gas nozzle (52) is communicated with the premixing cavity (11);

regulator (4) is including sensor and controller, the sensor links to each other with the input of controller, the output of controller links to each other with the motor of air-blower (2), the angle sensor of the angle of opening of sensor for can detecting gas valve (53) or for the flow sensor that can detect the gas flow in the pipeline, the controller can be according to the operating frequency of the voltage of the motor of sensor control air-blower (2) and/or motor.

3. The burner of claim 1, wherein: the pressure of the mixed gas in the premixing cavity (11) at the furnace plate (3) needs to ensure that the combustion speed of the gas is higher than the backfire combustion speed.

4. A burner according to any one of claims 1 to 3, wherein: the top of the furnace end (1) is also provided with a bracket (6) for placing a pot, the bracket (6) can move up and down relative to the furnace end (1), and the bracket (6) is fixed with the furnace end (1) through a connecting piece after moving in place.

5. A burner according to any one of claims 1 to 3, wherein: a first plate body (71) positioned below the furnace plate (3) is transversely arranged in the premixing cavity (11), the first plate body (71) is arranged close to the upper part of the premixing cavity (11), and a flow channel (73) for mixed gas to flow out is formed between the outer periphery of the first plate body (71) and the inner wall of the furnace end (1).

6. The burner of claim 5, wherein: the axis of the first plate body (71) is coincident with the axis of the furnace plate (3).

7. The burner of claim 5, wherein: still be equipped with second plate body (72) that is located first plate body (71) below in premixing chamber (11), second plate body (72) transversely sets up and the periphery contacts along the inner wall with furnace end (1), air hole (721) have been seted up to the position of neighbouring central authorities on second plate body (72).

8. The burner of claim 2, wherein: the burner also comprises a pipe body (8) with one open end, the open end of the pipe body (8) is communicated with the premixing cavity (11) of the burner (1), and the pipe body (8) is provided with an air inlet (81) communicated with the air outlet end of the air blower (2);

the pipe body (8) is provided with a gas-arranging chamber (84) at the open end adjacent to the pipe body (8), the gas-arranging chamber (84) is provided with an air inlet hole for air in the pipe body (8) to enter and an air outlet hole for communicating the gas-arranging chamber (84) and the premixing cavity (11), and the gas nozzle (52) is positioned in the gas-arranging chamber (84).

9. The burner of claim 8, wherein: along the flow direction of the air flow in the pipe body (8), a first partition plate (82) and a second partition plate (83) are sequentially arranged in the pipe body (8) at intervals, the second partition plate (83) faces to the open end of the pipe body (8), the air treatment chamber (84) is enclosed among the inner walls of the first partition plate (82), the second partition plate (83) and the pipe body (8), 5454 a plurality of first through holes (821) are formed in the first partition plate (82) to form the air inlet holes, and a second through hole (831) for mixed air to flow out is formed in the second partition plate (83) to form the air outlet holes.

10. The burner of claim 9, wherein: the second through hole (831) corresponds to the gas nozzle (52).