CN221258845U - Airflow structure of combustor and combustor - Google Patents

Abstract

The present disclosure relates to an airflow structure of a burner and a burner, the airflow structure of the burner including a main fire gas flow line and a main fire gas flow line; the pipe wall of the main fire gas circulation pipeline is provided with a first air inlet, the main fire gas circulation pipeline is provided with a main fire adjusting piece, the main fire adjusting piece is provided with a first holding part for holding, and the first holding part is used for driving the main fire adjusting piece to rotate relative to the main fire gas circulation pipeline so as to adjust the opening and closing states of the first air inlet; the main fire gas circulation pipeline is provided with a main fire adjusting part, the main fire adjusting part is provided with a second holding part for holding, and the second holding part is used for driving the main fire adjusting part to rotate relative to the main fire gas circulation pipeline so as to adjust the opening and closing states of the second air inlets, thereby being convenient for flexibly controlling the combustion states of fuel gas in the main fire gas circulation pipeline and the main fire gas circulation pipeline.

Description

Airflow structure of combustor and combustor

Technical Field

The disclosure relates to the technical field of combustors, and in particular relates to an airflow structure of a combustor and the combustor.

Background

A burner is a generic term for a device that discharges fuel and air in a fixed manner to perform mixed combustion, and is widely used in fields such as industrial production.

The burner generally comprises a box and a hearth, wherein a hollow main fire burner and a hollow pilot fire burner are arranged in the box. The main fire burner is provided with a main fuel gas inlet, a main fuel gas outlet and a main fire air inlet for air inflow, the main fuel gas inlet and the main fuel gas inlet are respectively communicated with fuel gas so as to inject fuel gas into the main fire burner and the main fire burner, and part of air can be mixed with the fuel gas in the main fire burner and the main fire burner through the main fire air inlet and the main fire air inlet respectively. Simultaneously, the main fuel gas outlet and the main fuel gas outlet are respectively communicated with the inner cavity of the hearth, so that the fuel gas and the air mixed in the main fire burner and the main fire burner can be introduced into the hearth for combustion, and the main fuel gas and the main fire burner are used by users.

However, the combustion state of the fuel gas in the main fire burner and the pilot fire burner of the existing burner cannot be flexibly controlled, resulting in inconvenience in use.

Disclosure of utility model

To solve or at least partially solve the above technical problems, the present disclosure provides an airflow structure of a burner and a burner.

In a first aspect, the present disclosure provides an airflow structure for a burner, comprising a main fire gas flow conduit and a main fire gas flow conduit;

A first air inlet for air to enter is formed in the pipe wall of the main fire gas circulation pipeline, a main fire adjusting piece is arranged on the main fire gas circulation pipeline, a first holding part for holding is arranged on the main fire adjusting piece, and the first holding part is used for driving the main fire adjusting piece to rotate relative to the main fire gas circulation pipeline so as to adjust the opening and closing states of the first air inlet;

The main fire gas circulation pipeline is provided with a main fire adjusting part, a second holding part for holding is arranged on the main fire adjusting part, and the second holding part is used for driving the main fire adjusting part to rotate relative to the main fire gas circulation pipeline so as to adjust the opening and closing states of the second air inlets.

In some embodiments, the pilot fire adjusting piece is an annular adjusting piece sleeved on the periphery of the pilot fire gas flow pipeline;

the main fire adjusting piece is provided with at least two first adjusting holes which are arranged at intervals along the circumferential direction of the main fire adjusting piece, and a main fire shielding part is formed between two adjacent first adjusting holes;

When the pilot fire adjusting piece rotates relative to the axial direction of the pilot fire gas circulation pipeline, the pilot fire shielding part can shield the first air inlet or stagger with the first air inlet so as to expose at least part of the first air inlet.

In some embodiments, the number of the first air inlets is at least two, and at least two first air inlets are arranged at intervals on the circumference of the pipe wall of the main fire gas circulation pipeline and are in one-to-one correspondence with the first adjusting holes.

In some embodiments, the first grip portion is a grip lever extending in a direction away from the parent gas flow conduit.

In some embodiments, the main fire adjusting piece is an annular adjusting piece sleeved on the periphery of the main fire gas flow pipeline;

The main fire adjusting piece is provided with at least two second adjusting holes which are arranged at intervals along the circumferential direction of the main fire adjusting piece, and a main fire shielding part is formed between two adjacent second adjusting holes;

When the main fire adjusting piece rotates relative to the axial direction of the main fire gas circulation pipeline, the main fire shielding part can shield the second air inlet or stagger with the second air inlet so as to expose at least part of the second air inlet.

In some embodiments, the number of the second air inlets is at least two, and at least two second air inlets are arranged at intervals on the circumference of the pipe wall of the main fire gas circulation pipeline and are in one-to-one correspondence with the second adjusting holes.

In some embodiments, the second grip portion is a grip lever extending in a direction away from the main fire gas flow conduit.

In a second aspect, the present disclosure provides a burner comprising a hollow housing in communication with the outside and an airflow structure of the burner as described above;

The shell is provided with a combustion cavity and an air inlet cavity, the combustion cavity and the air inlet cavity are arranged at intervals, and the air inlet cavity is used for communicating with the outside; at least part of the airflow structure of the burner is positioned in the air inlet cavity, and the air outlet end of the main fire gas circulation pipeline are respectively communicated with the combustion cavity;

An air conditioning structure is arranged in the air inlet cavity and used for adjusting the communication state of the air inlet cavity and the combustion cavity.

In some embodiments, the air conditioning structure includes a fixture and a conditioning shield;

The fixing piece is connected in the air inlet cavity, the fixing piece is provided with an air vent, and the adjusting shielding piece can rotate relative to the fixing piece so as to adjust the opening and closing states of the air vent.

In some embodiments, the adjusting shielding member is provided with at least two third adjusting holes arranged at intervals, and an air shielding part is formed between two adjacent third adjusting holes;

The air shield may block the vent when the adjustment shield is rotated, or may be offset from the vent to reveal at least a portion of the vent.

In some embodiments, the adjusting shielding member is provided with an adjusting rod for holding, and the cavity wall of the air inlet cavity is provided with an avoiding hole for the adjusting rod to extend to the outer side of the shell and move.

Compared with the prior art, the technical scheme provided by the embodiment of the disclosure has the following advantages:

According to the airflow structure of the burner and the burner, the first air inlet for air to enter is formed in the pipe wall of the main fire gas circulation pipeline, the main fire adjusting piece is arranged on the main fire gas circulation pipeline, the first holding part for holding is arranged on the main fire adjusting piece, and the first holding part is used for driving the main fire adjusting piece to rotate relative to the main fire gas circulation pipeline so as to adjust the opening and closing states of the first air inlet; meanwhile, a second air inlet for air to enter is formed in the pipe wall of the main fire gas circulation pipeline, a main fire adjusting piece is arranged on the main fire gas circulation pipeline, a second holding part for holding is arranged on the main fire adjusting piece, and the second holding part is used for driving the main fire adjusting piece to rotate relative to the main fire gas circulation pipeline so as to adjust the opening and closing states of the second air inlet. When the air quantity entering the main fire gas circulation pipeline and the main fire gas circulation pipeline needs to be regulated, the first holding part is only required to drive the main fire regulating part to rotate relative to the main fire gas circulation pipeline, the second holding part is required to drive the main fire regulating part to rotate relative to the main fire gas circulation pipeline, the opening and closing states of the first air inlet can be regulated through the main fire regulating part, and the opening and closing states of the second air inlet can be regulated through the main fire regulating part, so that the air quantity entering the main fire gas circulation pipeline and the main fire gas circulation pipeline is regulated, the mixing proportion of fuel gas and air in the main fire gas circulation pipeline and the main fire gas circulation pipeline is regulated, the combustion states of fuel gas in the main fire gas circulation pipeline and the main fire gas circulation pipeline are controlled, and the regulation of the main fire and the main fire combustion states is flexible and convenient to use are realized.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure and together with the description, serve to explain the principles of the disclosure.

In order to more clearly illustrate the embodiments of the present disclosure or the solutions in the prior art, the drawings that are required for the description of the embodiments or the prior art will be briefly described below, and it will be obvious to those skilled in the art that other drawings can be obtained from these drawings without inventive effort.

FIG. 1 is a schematic view of a partial structure of a burner according to an embodiment of the present disclosure with a vent fully opened;

FIG. 2 is a schematic view of a partial structure of a burner according to an embodiment of the present disclosure with a vent partially open;

FIG. 3 is a schematic view of a partial structure of a burner according to an embodiment of the present disclosure with a vent fully closed;

fig. 4 is a partial structural schematic view of a burner according to an embodiment of the present disclosure.

Wherein, 1, a main fire gas circulation pipeline; 11. a main fire air inlet pipe; 111. a first air inlet; 12. a mother fire air outlet pipe; 13. a female fire fixing piece; 2. a main fire gas flow line; 21. a main fire air inlet pipe; 211. a second air inlet; 22. a main fire air outlet pipe; 23. a main fire fixing piece; 3. a pilot flame adjusting member; 31. a first adjustment aperture; 32. a main fire shielding part; 4. a main fire adjusting member; 41. a second adjustment aperture; 42. a main fire shielding part; 5. a first grip portion; 6. a second grip portion; 7. an air conditioning structure; 71. a fixing member; 711. a vent; 72. adjusting the shield; 721. a third adjustment aperture; 722. an air shielding part; 723. an adjusting rod; 10. a housing; 101. an outer case; 1011. an air inlet cavity; 102. a furnace; 1021. a combustion chamber.

Detailed Description

In order that the above objects, features and advantages of the present disclosure may be more clearly understood, a further description of aspects of the present disclosure will be provided below. It should be noted that, without conflict, the embodiments of the present disclosure and features in the embodiments may be combined with each other.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present disclosure, but the present disclosure may be practiced otherwise than as described herein; it will be apparent that the embodiments in the specification are only some, but not all, embodiments of the disclosure.

Referring to fig. 1 to 4, the present embodiment provides an airflow structure of a burner. The airflow structure of the burner specifically comprises a main fire gas circulation pipeline 1 and a main fire gas circulation pipeline 2.

The airflow structure of the burner is used for the burner, the burner comprises a hollow shell 10 (shown by a dotted line in fig. 4) which is communicated with the outside, the shell 10 is provided with a combustion chamber 1021 and an air inlet chamber 1011, the combustion chamber 1021 and the air inlet chamber 1011 are arranged at intervals, and the air inlet chamber 1011 is used for being communicated with the outside. For example, a vent may be provided in the housing 10 to facilitate air from outside the burner into the intake chamber 1011. Specifically, at least part of the airflow structure of the burner is located in the air inlet cavity 1011, and the air outlet end of the main fire gas circulation pipeline 1 and the air outlet end of the main fire gas circulation pipeline 2 are respectively communicated with the combustion cavity 1021. The air inlet end of the main fire gas circulation pipeline 1 and the air inlet end of the main fire gas circulation pipeline 2 are respectively communicated with fuel gas so as to convey the fuel gas into the main fire gas circulation pipeline 1 and the main fire gas circulation pipeline 2.

Illustratively, the housing 10 includes an outer casing 101 and a furnace 102 located beside the outer casing 101 and in communication with the outer casing 101, at least part of the airflow structure of the burner being located within the outer casing 101, the inner cavity of the outer casing 101 being in communication with the outside and being formed as an air intake cavity 1011; the interior cavity of the furnace 102 is formed as a combustion chamber 1021.

The pipe wall of the main fire gas circulation pipe 1 is provided with a first air inlet 111 for air to enter, the main fire gas circulation pipe 1 is provided with a main fire adjusting piece 3, the main fire adjusting piece 3 is provided with a first holding part 5 for holding, and the first holding part 5 is used for driving the main fire adjusting piece 3 to rotate relative to the main fire gas circulation pipe 1 so as to adjust the opening and closing state of the first air inlet 111.

Meanwhile, a second air inlet 211 for air to enter is formed in the pipe wall of the main fire gas circulation pipeline 2, a main fire adjusting piece 4 is arranged on the main fire gas circulation pipeline 2, a second holding part 6 for holding is arranged on the main fire adjusting piece 4, and the second holding part 6 is used for driving the main fire adjusting piece 4 to rotate relative to the main fire gas circulation pipeline 2 so as to adjust the opening and closing states of the second air inlet 211.

Specifically, the above-described open-closed state includes an open state or a closed state; wherein the open state comprises fully open, or partially open. Illustratively, the different open and closed states of the first air intake port 111 and the second air intake port 211 correspond to the amount of air that the air intake chamber 1011 enters into the main fire gas circulation line 1 and the main fire gas circulation line 2 per unit time.

In specific implementation, taking the main fire gas circulation pipeline 1 as an example, when the fuel gas enters the main fire gas circulation pipeline 1, a negative pressure state is formed in the main fire gas circulation pipeline 1, and at this time, the air in the air inlet cavity 1011 can enter the main fire gas circulation pipeline 1 through the first air inlet 111 to be mixed with the fuel gas, and the mixed fuel gas and air are discharged from the air outlet end of the main fire gas circulation pipeline 1 into the combustion cavity 1021 for combustion.

The first holding part 5 drives the pilot fire adjusting part 3 to rotate relative to the pilot fire gas circulation pipeline 1 so as to adjust the opening and closing state of the first air inlet 111, and the air circulation area of the first air inlet 111 can be changed, so that the air quantity entering the pilot fire gas circulation pipeline 1 in unit time is controlled, the mixing proportion of fuel gas and air is adjusted, the purpose of controlling the pilot fire combustion state is achieved, and the pilot fire combustion state is flexibly adjusted and is convenient to use.

The adjustment of the amount of air mixed with the fuel gas in the main fire gas flow line 2 by the main fire adjusting member 4 can be understood with reference to the above description.

According to the airflow structure of the burner provided by the embodiment, the first air inlet 111 for air to enter is formed in the pipe wall of the main fire gas circulation pipeline 1, the main fire adjusting piece 3 is arranged on the main fire gas circulation pipeline 1, the first holding part 5 for holding is arranged on the main fire adjusting piece 3, and the first holding part 5 is used for driving the main fire adjusting piece 3 to rotate relative to the main fire gas circulation pipeline 1 so as to adjust the opening and closing states of the first air inlet 111; meanwhile, a second air inlet 211 for air to enter is formed in the pipe wall of the main fire gas circulation pipeline 2, a main fire adjusting piece 4 is arranged on the main fire gas circulation pipeline 2, a second holding part 6 for holding is arranged on the main fire adjusting piece 4, and the second holding part 6 is used for driving the main fire adjusting piece 4 to rotate relative to the main fire gas circulation pipeline 2 so as to adjust the opening and closing states of the second air inlet 211. When the air entering the main fire gas circulation pipeline 1 and the main fire gas circulation pipeline 2 needs to be regulated, the first holding part 5 only needs to drive the main fire regulating part 3 to rotate relative to the main fire gas circulation pipeline 1, the second holding part 6 drives the main fire regulating part 4 to rotate relative to the main fire gas circulation pipeline 2, the opening and closing state of the first air inlet 111 can be regulated through the main fire regulating part 3, and the opening and closing state of the second air inlet 211 can be regulated through the main fire regulating part 4, so that the air quantity entering the main fire gas circulation pipeline 1 and the main fire gas circulation pipeline 2 is regulated, the mixing proportion of the fuel gas and the air in the main fire gas circulation pipeline 1 and the main fire gas circulation pipeline 2 is regulated, the combustion state of the fuel gas in the main fire gas circulation pipeline 1 and the main fire gas circulation pipeline 2 is controlled, and the regulation of the main fire and the main fire combustion state is flexible and convenient to use are realized.

In some embodiments, referring to fig. 1 to 4, the pilot fire adjusting member 3 is an annular adjusting member sleeved on the outer periphery of the pilot fire gas flow pipe 1. The female fire adjusting member 3 is provided with at least two first adjusting holes 31 which are arranged at intervals along the circumferential direction of the female fire adjusting member 3, and a female fire shielding part 32 is formed between two adjacent first adjusting holes 31. When the pilot fire adjusting member 3 rotates axially relative to the pilot fire gas flow pipeline 1, the pilot fire shielding portion 32 may shield the first gas inlet 111 or be staggered from the first gas inlet 111 so as to expose at least part of the first gas inlet 111.

By adjusting the pilot shielding portion 32 to cover the first air inlet 111 to different degrees, the intake area of the first air inlet 111 can be adjusted, and the amount of air entering the pilot gas flow line 1 can be adjusted to a certain degree, thereby realizing control of the pilot combustion state.

As shown in fig. 1 to 4, the pilot gas circulation line 1 includes a pilot gas inlet pipe 11 and a pilot gas outlet pipe 12 sleeved outside one end of the pilot gas inlet pipe 11, the other end of the pilot gas inlet pipe 11 is communicated with fuel gas, and one end of the pilot gas outlet pipe 12 away from the pilot gas inlet pipe 11 is communicated with a combustion chamber 1021. The position of the female fire air inlet pipe 11, which is close to the female fire air outlet pipe 12, is further sleeved with an annular female fire fixing piece 13, the female fire fixing piece 13 is connected with the female fire air outlet pipe 12, the female fire adjusting piece 3 is specifically sleeved on the outer side of the female fire fixing piece 13, and the first air inlet 111 is formed in the female fire air inlet pipe 11 and penetrates through the female fire fixing piece 13. Specifically, when the pilot fire adjusting member 3 rotates relative to the pilot fire fixing member 13, the opening and closing of the first air inlet 111 can be adjusted.

In some embodiments, as shown with reference to fig. 1 to 4, the first grip portion 5 is a grip lever extending in a direction away from the main fire gas flow line 1.

The setting is so that the user can conveniently control the rotation of the pilot fire adjusting part 3 by holding the holding rod, thereby realizing the adjustment of the air inlet area of the first air inlet 111 and being convenient to use.

Illustratively, a rotation groove is formed in the wall of the air inlet 1011 for the grip lever to extend to the outside of the housing 10 and rotate.

In some embodiments, as shown in fig. 1 to 4, at least two first air inlets 111 are arranged at intervals on the circumference of the pipe wall of the main fire gas circulation pipeline 1, and are in one-to-one correspondence with the first adjusting holes 31.

By providing at least two first air inlets 111, the uniformity of the intake of the first air inlets 111 can be improved to some extent, and the uniformity of mixing of air and fuel gas in the main fire gas flow line 1 can be improved.

For example, the shape and size of the first air inlet 111 may be matched with those of the first adjusting hole 31, for example, when the first adjusting hole 31 is correspondingly communicated with the first air inlet 111, the first air inlet 111 may be completely exposed and not blocked by the pilot fire shielding part 32, so that the air inlet effect of the first air inlet 111 is good, and the air inlet area of the first air inlet 111 may be ensured to a certain extent, so that the control effect on the combustion state of the pilot fire is improved.

In some embodiments, referring to fig. 1 to 4, the main fire adjusting member 4 is an annular adjusting member fitted around the outer circumference of the main fire gas flow line 2. The main fire adjusting member 4 is provided with at least two second adjusting holes 41 which are arranged at intervals along the circumferential direction of the main fire adjusting member 4, and a main fire shielding part 42 is formed between two adjacent second adjusting holes 41. When the main fire adjusting member 4 rotates axially relative to the main fire gas circulation pipeline 2, the main fire shielding portion 42 may shield the second gas inlet 211 or be staggered from the second gas inlet 211 so as to expose at least part of the second gas inlet 211.

By adjusting the main fire shielding part 42 to cover the second air inlet 211 to different degrees, the air inlet area of the second air inlet 211 can be adjusted, so that the air quantity entering the main fire air circulation pipeline 2 is adjusted to a certain degree, and the main fire combustion state is controlled.

As shown in fig. 1 to 4, the main fire gas circulation line 2 includes a main fire gas inlet pipe 21 and a main fire gas outlet pipe 22 sleeved outside one end of the main fire gas inlet pipe 21, the other end of the main fire gas inlet pipe 21 is communicated with fuel gas, and one end of the main fire gas outlet pipe 22 away from the main fire gas inlet pipe 21 is communicated with a combustion chamber 1021. The main fire air inlet pipe 21 is further sleeved with an annular main fire fixing piece 23 at a position close to one end of the main fire air outlet pipe 22, the main fire fixing piece 23 is connected with the main fire air outlet pipe 22, the main fire adjusting piece 4 is specifically sleeved on the outer side of the main fire fixing piece 23, and the second air inlet 211 is formed in the main fire air inlet pipe 21 and penetrates through the main fire fixing piece 23. Specifically, when the main fire adjusting member 4 rotates relative to the main fire fixing member 23, the opening and closing of the second air inlet 211 can be adjusted.

In some embodiments, as shown with reference to fig. 1-4, the second grip portion 6 is a grip bar extending in a direction away from the main fire gas flow conduit 2.

The setting is so that the user can conveniently control the rotation of the main fire adjusting part 4 by holding the holding rod, thereby realizing the adjustment of the air inlet area of the second air inlet 211 and being convenient to use.

Illustratively, a rotation groove is formed in the wall of the air inlet 1011 for the grip lever to extend to the outside of the housing 10 and rotate.

In some embodiments, as shown in fig. 1 to 4, at least two second air inlets 211 are provided, and at least two second air inlets 211 are arranged at intervals in the circumferential direction of the pipe wall of the main fire gas circulation pipeline 2 and are in one-to-one correspondence with the second adjusting holes 41.

By providing at least two second air inlets 211, the uniformity of the intake of the second air inlets 211 can be improved to a certain extent, and the uniformity of mixing of air and fuel gas in the main fire gas flow line 2 can be improved.

For example, the shape and size of the second air inlet 211 and the second adjusting hole 41 can be matched, for example, when the second adjusting hole 41 is correspondingly communicated with the second air inlet 211, the second air inlet 211 can be completely exposed and is not shielded by the main fire shielding part 42, the air inlet effect of the second air inlet 211 is good, the air inlet area of the second air inlet 211 can be ensured to a certain extent, and the control effect on the combustion state of the main fire is improved.

The present embodiment also provides a burner including a housing 10 which is hollow and communicates with the outside, and an air flow structure of the burner. Wherein, an air conditioning structure 7 is arranged in the air inlet cavity 1011 of the shell 10, and the air conditioning structure 7 is used for adjusting the communication state of the air inlet cavity 1011 and the combustion cavity 1021. Wherein, the communication state of the air inlet cavity 1011 and the combustion cavity 1021 comprises two states of communication and disconnection; the communication specifically includes complete communication and partial communication.

For example, when the amount of the fuel gas introduced into the combustion chamber 1021 increases and the first air inlet 111 and the second air inlet 211 are completely opened, and the air introduced into the combustion chamber 1021 cannot sufficiently combust the fuel gas in the combustion chamber 1021, the communication state between the air inlet 1011 and the combustion chamber 1021 can be adjusted by controlling the air conditioning structure 7, thereby adjusting the amount of the air introduced into the combustion chamber 1021 to supply the secondary air into the combustion chamber 1021, thereby further adjusting the combustion state of the flame in the combustion chamber 1021.

In some embodiments, referring to fig. 1-4, the air conditioning structure 7 includes a fixture 71 and an adjustment shroud 72. The fixing member 71 is connected to the air inlet chamber 1011, and the fixing member 71 is provided with a vent 711, and the adjusting shielding member 72 is rotatable relative to the fixing member 71 to adjust the opening/closing state of the vent 711. The open/close state of the vent 711 specifically includes an open state or a closed state; wherein the open state comprises fully open, or partially open.

By rotating the adjusting shield 72 relative to the fixing member 71, the air inlet 711 can be covered to different degrees by adjusting the shield 72, the air inlet flow area of the air inlet 711 can be adjusted, and air in the air inlet 1011 can enter the combustion chamber 1021 through the air inlet 711, so that the air amount entering the combustion chamber 1021 can be adjusted to a certain degree, and the combustion state in the combustion chamber 1021 can be controlled.

In some embodiments, referring to fig. 1 to 3, at least two third adjusting holes 721 are formed on the adjusting shielding member 72, and an air shielding portion 722 is formed between two adjacent third adjusting holes 721. The air shield 722 may block the vent 711 or be offset from the vent 711 to reveal at least a portion of the vent 711 as the adjustment shield 72 is rotated.

By adjusting the rotation of the shielding member 72 to cover the air vent 711 to different degrees, the intake area of the air vent 711 can be adjusted, and the amount of air entering the combustion chamber 1021 can be adjusted to a certain degree, thereby realizing the control of the combustion state in the combustion chamber 1021.

Specifically, when the mixed fuel gas is combusted in the combustion chamber 1021, a negative pressure state is formed in the combustion chamber 1021, and air in the air intake chamber 1011 can enter the combustion chamber 1021 through the third adjusting hole 721 and the air vent 711.

For example, referring to fig. 1 to 3, the fixing member 71 may be fixed on the outer circumferences of the main fire gas circulation pipe 1 and the main fire gas circulation pipe 2, at least two air vents 711 are formed in the fixing member 71, and the air vents 711 are disposed in one-to-one correspondence with the third adjusting holes 721. For example, the shape and size of the vent 711 and the shape and size of the third adjustment hole 721 may be matched. The fixing member 71 may be a fixing plate, for example.

For example, referring to fig. 1 to 3, for example, the adjusting shield 72 may be sleeved on the outer periphery of the main fire gas flow line 2 and may rotate around the axis of the main fire gas flow line 2 with respect to the main fire gas flow line 2, for example, a via hole through which the main fire gas flow line 1 passes and rotates may be formed in the air shielding portion 722.

In some embodiments, referring to fig. 1 to 3, the adjusting shutter 72 is provided with an adjusting lever 723 for holding, and a cavity wall of the air intake cavity 1011 is provided with a relief hole for the adjusting lever 723 to extend to the outside of the housing 10 and move.

The arrangement is convenient for a user to rotate the adjusting shielding member 72 by holding the adjusting lever 723, thereby realizing the adjustment of the air inlet area of the air vent 711 and being convenient to use.

The airflow structure of the burner in this embodiment is the same as the airflow structure of the burner provided in the above embodiment, and the principle of implementation is the same, and the same or similar technical effects can be brought about, as described in the above embodiment.

It should be noted that in this document, relational terms such as "first" and "second" and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

The foregoing is merely a specific embodiment of the disclosure to enable one skilled in the art to understand or practice the disclosure. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the disclosure. Thus, the present disclosure is not intended to be limited to the embodiments shown and described herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. The airflow structure of the burner is characterized by comprising a main fire gas circulation pipeline (1) and a main fire gas circulation pipeline (2);

a first air inlet (111) for air to enter is formed in the pipe wall of the main fire gas circulation pipeline (1), a main fire adjusting piece (3) is arranged on the main fire gas circulation pipeline (1), a first holding part (5) for holding is arranged on the main fire adjusting piece (3), and the first holding part (5) is used for driving the main fire adjusting piece (3) to rotate relative to the main fire gas circulation pipeline (1) so as to adjust the opening and closing states of the first air inlet (111);

The main fire gas circulation pipeline (2) is provided with a second air inlet (211) for air to enter, the main fire gas circulation pipeline (2) is provided with a main fire adjusting piece (4), the main fire adjusting piece (4) is provided with a second holding part (6) for holding, and the second holding part (6) is used for driving the main fire adjusting piece (4) to rotate relative to the main fire gas circulation pipeline (2) so as to adjust the opening and closing states of the second air inlet (211).

2. The gas flow structure of the burner according to claim 1, wherein the pilot flame adjusting member (3) is an annular adjusting member sleeved on the periphery of the pilot flame gas circulation pipeline (1);

At least two first regulating holes (31) which are arranged at intervals along the circumferential direction of the main fire regulating piece (3) are formed in the main fire regulating piece (3), and a main fire shielding part (32) is formed between every two adjacent first regulating holes (31);

When the pilot fire adjusting piece (3) rotates relative to the axial direction of the pilot fire gas circulation pipeline (1), the pilot fire shielding part (32) can shield the first air inlet (111) or is staggered with the first air inlet (111) so as to expose at least part of the first air inlet (111).

3. The airflow structure of the burner according to claim 2, wherein at least two first air inlets (111) are arranged at intervals on the circumference of the pipe wall of the main fire gas circulation pipeline (1), and are in one-to-one correspondence with the first adjusting holes (31).

4. The gas flow structure of a burner according to claim 1, characterized in that the first grip (5) is a grip lever extending in a direction away from the parent gas flow conduit (1).

5. The gas flow structure of a burner according to any one of claims 1 to 4, characterized in that the main fire adjusting member (4) is an annular adjusting member which is sleeved on the outer periphery of the main fire gas circulation pipeline (2);

At least two second adjusting holes (41) which are arranged at intervals along the circumferential direction of the main fire adjusting piece (4) are formed in the main fire adjusting piece (4), and a main fire shielding part (42) is formed between every two adjacent second adjusting holes (41);

When the main fire adjusting piece (4) rotates relative to the main fire gas circulation pipeline (2) in the axial direction, the main fire shielding part (42) can shield the second air inlet (211) or stagger with the second air inlet (211) so as to expose at least part of the second air inlet (211).

6. The airflow structure of the burner according to claim 5, wherein at least two second air inlets (211) are arranged at intervals on the circumference of the pipe wall of the main fire gas circulation pipeline (2), and are in one-to-one correspondence with the second adjusting holes (41).

7. A burner gas flow structure according to any one of claims 1 to 4, characterized in that the second grip (6) is a grip lever extending in a direction away from the main fire gas flow conduit (2).

8. A burner, characterized by comprising a hollow housing (10) communicating with the outside and by a gas flow structure of the burner according to any one of claims 1 to 7;

the shell (10) is provided with a combustion chamber (1021) and an air inlet chamber (1011), the combustion chamber (1021) and the air inlet chamber (1011) are arranged at intervals, and the air inlet chamber (1011) is used for communicating with the outside; at least part of the airflow structure of the burner is positioned in the air inlet cavity (1011), and the air outlet end of the main fire gas circulation pipeline (1) and the air outlet end of the main fire gas circulation pipeline (2) are respectively communicated with the combustion cavity (1021);

An air conditioning structure (7) is arranged in the air inlet cavity (1011), and the air conditioning structure (7) is used for adjusting the communication state of the air inlet cavity (1011) and the combustion cavity (1021).

9. Burner according to claim 8, characterized in that the air-conditioning structure (7) comprises a fixing (71) and an adjusting shutter (72);

The fixing piece (71) is connected in the air inlet cavity (1011), an air vent (711) is formed in the fixing piece (71), and the adjusting shielding piece (72) can rotate relative to the fixing piece (71) so as to adjust the opening and closing states of the air vent (711).

10. The burner according to claim 9, wherein the adjusting shielding member (72) is provided with at least two third adjusting holes (721) arranged at intervals, and an air shielding portion (722) is formed between two adjacent third adjusting holes (721);

The air shielding part (722) can shield the air port (711) or be staggered with the air port (711) when the adjusting shielding part (72) rotates so as to expose at least part of the air port (711);

And/or an adjusting rod (723) for holding is arranged on the adjusting shielding member (72), and an avoidance hole for the adjusting rod (723) to extend to the outer side of the shell (10) and move is formed in the cavity wall of the air inlet cavity (1011).