CN217684982U

CN217684982U - Combustor and gas stove

Info

Publication number: CN217684982U
Application number: CN202221327286.0U
Authority: CN
Inventors: 苑善通; 方松青; 贺立军; 劳春峰
Original assignee: Qingdao Haier Smart Technology R&D Co Ltd; Haier Smart Home Co Ltd
Current assignee: Qingdao Haier Smart Technology R&D Co Ltd; Haier Smart Home Co Ltd
Priority date: 2022-05-30
Filing date: 2022-05-30
Publication date: 2022-10-28
Anticipated expiration: 2032-05-30

Abstract

The application relates to gas cooking utensils technical field, discloses a combustor and gas-cooker, the combustor includes: the gas distribution assembly comprises a gas distribution cover and a gas distribution seat, the gas distribution cover is positioned above the gas distribution seat, the gas distribution cover and the gas distribution seat jointly enclose an injection pipe and a fuel gas flow passage, and an outlet of the injection pipe is communicated with the fuel gas flow passage; the base is positioned below the gas distribution seat, a gas introducing channel is limited by the base, and an outlet of the gas introducing channel corresponds to an inlet of the injection pipe so as to provide fuel gas for the injection pipe; the inner wall surface of the air distribution cover is provided with a limiting part, the outer wall surface of the base is provided with a limiting matching part, and when the limiting part is matched with the limiting matching part, the air distribution cover and the base limit rotation. The gas distribution assembly and the fire cover do not have freedom degree relative to the movement of the base, so that the coaxiality of the ejector and the nozzle can be always ensured.

Description

Combustor and gas stove

Technical Field

The application relates to the technical field of gas cookers, for example to a combustor and a gas stove.

Background

At present, a furnace end, an ejector, a valve body nozzle and other parts of a common lower air inlet system are all fixed on a bottom shell, and the positions of the furnace end, the ejector, the valve body nozzle and other parts are relatively fixed. But the whole such as branch gas dish and fire lid of going up the air inlet need user or installer manual placing in the base top, the nozzle axis need guarantee with the axiality of the axis of ejector, otherwise lead to easily drawing to penetrate not smooth, the flue gas increases.

In the process of implementing the embodiments of the present disclosure, it is found that at least the following problems exist in the related art:

in the correlation technique, when going up the installation of air inlet burner, in order to guarantee the axis of nozzle and the axis axiality of ejector, need control the degree of freedom of minute gas subassembly and base, and then lead to minute gas subassembly comparatively complicated with the installation work of base.

SUMMERY OF THE UTILITY MODEL

The following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed embodiments. This summary is not an extensive overview and is intended to neither identify key/critical elements nor delineate the scope of such embodiments, but is intended to be a prelude to the more detailed description that is presented later.

The embodiment of the disclosure provides a combustor and a gas stove, so that the installation accuracy of a gas distribution assembly and a base is improved, and the installation complexity is reduced.

According to a first aspect of the embodiments of the present invention, there is provided a burner, comprising: the gas distribution assembly comprises a gas distribution cover and a gas distribution seat, the gas distribution cover is positioned above the gas distribution seat, the gas distribution cover and the gas distribution seat jointly enclose an injection pipe and a fuel gas flow passage, and an outlet of the injection pipe is communicated with the fuel gas flow passage; the base is positioned below the gas distribution seat, a gas introducing channel is limited by the base, and an outlet of the gas introducing channel corresponds to an inlet of the injection pipe so as to provide fuel gas for the injection pipe; the inner wall surface of the air distribution cover is provided with a limiting part, the outer wall surface of the base is provided with a limiting matching part, and when the limiting part is matched with the limiting matching part, the air distribution cover and the base limit rotation.

According to a second aspect of the embodiments of the present invention, there is provided a gas stove, comprising the above burner.

The combustor and the gas stove provided by the embodiment of the disclosure can realize the following technical effects:

spacing portion and spacing cooperation portion cooperate, not only can restrict the rotation of dividing gas lid and base, can play the effect of location moreover, can increase the accuracy of dividing the gas unit mount like this, reduce the installation degree of difficulty of dividing the gas unit. After the gas distribution assembly is assembled with the base, the gas distribution cover is connected with the gas distribution base, and the fire cover is also connected with the gas distribution cover, so that the gas distribution assembly and the fire cover have no freedom degree of movement relative to the base. Therefore, the coaxiality of the ejector and the nozzle can be always ensured.

The foregoing general description and the following description are exemplary and explanatory only and are not restrictive of the application.

Drawings

One or more embodiments are illustrated by way of example in the accompanying drawings, which correspond to the accompanying drawings and not in limitation thereof, in which elements having the same reference numeral designations are shown as like elements and not in limitation thereof, and wherein:

FIG. 1 is a schematic structural diagram of an upper intake air burner provided in an embodiment of the present disclosure;

FIG. 2 is a schematic view of a fire cover according to an embodiment of the present disclosure;

FIG. 3 is a schematic structural view of another perspective of an outer fire cover provided by embodiments of the present disclosure;

FIG. 4 is an enlarged schematic view of portion A of FIG. 3;

FIG. 5 is a schematic view of a fire lid in accordance with an embodiment of the present disclosure;

FIG. 6 is a schematic structural view from another perspective of a fire lid provided by embodiments of the present disclosure;

FIG. 7 is an enlarged schematic view of portion B of FIG. 6;

FIG. 8 is a schematic view of a gas distribution cover according to an embodiment of the present disclosure;

FIG. 9 is a schematic structural view from another perspective of a gas distribution cover provided by embodiments of the present disclosure;

FIG. 10 is a schematic view of a gas distributor according to an embodiment of the present disclosure;

FIG. 11 is a schematic structural view of another perspective of a gas distributor according to embodiments of the present disclosure;

FIG. 12 is a schematic structural diagram of a base provided in the embodiments of the present disclosure;

FIG. 13 is a schematic view of a structure of a base and a liquid-bearing tray according to an embodiment of the present disclosure;

FIG. 14 is a schematic structural view from another perspective of an upper intake burner provided by embodiments of the present disclosure;

FIG. 15 is an exploded view of an upper intake air burner according to an embodiment of the present disclosure;

FIG. 16 is a schematic cross-sectional view of a fire cover and a gas distribution cover according to an embodiment of the present disclosure;

fig. 17 is a schematic cross-sectional view of an upper intake burner according to an embodiment of the present disclosure.

Reference numerals:

10. an outer fire cover; 101. a third gas mixing chamber; 102. a fourth fire hole; 1021. a first fire hole group; 103. a fifth fire hole; 1031. a first flame holding tank; 104. a first groove of the outer fire cover; 1041. an outer annular outer gas mixing chamber; 1042. an outer ring inner air mixing chamber; 105. a first seal projection; 1051. a through groove; 106. a first fire transfer slot; 107. drilling; 108. a first outer side wall; 20. a middle fire cover; 201. a second gas mixing chamber; 202. a second fire hole; 2021. a second fire hole group; 203. a third fire hole; 2031. a second flame holding tank; 204. a first groove of the middle fire cover; 2041. a middle ring outer gas mixing chamber; 2042. a middle ring inner gas mixing chamber; 205. a second seal projection; 206. a second fire transfer slot; 2061. a fire transfer hole; 2062. an accumulation tank; 2063. A first slot-shaped channel; 2064. a through hole; 207. a second exterior sidewall; 30. an inner fire cover; 301. a first fire hole; 40. A gas distribution cover; 401. a first gas distribution channel; 4011. a first gas distribution plate; 4012. an outer ring outer gas distribution channel; 4013. an outer ring inner gas distribution channel; 402. a second gas distribution passage; 4021. a second gas distribution plate; 4022. an intermediate-ring outer gas separation channel; 4023. An intermediate annular air channel; 403. a skirt; 4031. a first limit protrusion; 4032. a second limit bulge; 4033. a second arcuate surface; 404. a first screw hole; 4041. a partition mating portion; 405. a third air distribution channel; 406. a first protrusion; 4061. a first projection of the first gas distribution channel; 4062. a first protrusion of the second gas distribution channel; 407. an air outlet grille; 4071. a first air outlet grille; 4072. a second air outlet grille; 4073. a first grid section; 4074. a second grid section; 4075. a third air outlet grille; 4076. a fourth air outlet grille; 4077. a third grid section; 4078. a fourth grid section; 4079. a step-shaped structure; 408. grating holes; 4081. a bottom wall of the gas distribution channel; 4082. a second inclined plane; 409. A bottom wall; 4091. an inner annular wall; 4092. an outer annular wall; 4093. a first upper injection passage; 4094. a second upper injection passage; 4095. a third upper injection passage; 4096. a second slot-shaped channel; 50. a gas distribution seat; 501. an outer ring air outlet channel; 5011. a first air outlet channel; 5012. a second air outlet channel; 502. a middle ring air outlet channel; 5021. a third air outlet channel; 5022. a fourth air outlet channel; 503. an ejector; 5031. a first ejector; 5032. a first lower jet channel; 5033. a second ejector; 5034. a second lower injection passage; 5035. a third ejector; 5036. a third lower injection passage; 504. a partition plate; 5041. a secondary air flow channel; 505. reinforcing ribs; 506. a partition part; 5061. a first partition part; 5062. a second partition part; 507. a bottom wall of the air outlet channel; 5071. a first inclined plane; 508. a first body; 5081. a second body; 509. a limiting hole; 5091. a second screw hole; 5092. a support pillar; 6, a base; 601. an air outlet part; 602. a first through hole; 6024. a nozzle; 603. a limit matching part; 6031. a side elevation; 6032. a first arc-shaped surface; 6033. a limiting column; 604. a support surface; 605. a second connection hole; 606. a base body; 70. a liquid bearing disc; 702. a plugging cap; 80. a fire cover; 801. an outer sidewall; 8011. an outer fire hole; 8012. a third wall segment; 8013. a fourth wall segment; 802. an inner sidewall; 8021. an inner fire hole; 8022. a first wall segment; 8023. a second wall segment; 803. a top wall; 804. a gas mixing chamber; 8041. an inner air mixing chamber; 8042. an outer air mixing chamber; 805. a fire transfer groove; 806. a first main fire hole; 8061. a first flame stabilizing hole; 8062. a second main fire hole; 8063. a second flame stabilizing hole; 8071. a first step portion; 8072. a second step portion.

Detailed Description

So that the manner in which the features and elements of the disclosed embodiments can be understood in detail, a more particular description of the disclosed embodiments, briefly summarized above, may be had by reference to the embodiments, some of which are illustrated in the appended drawings. In the following description of the technology, for purposes of explanation, numerous details are set forth in order to provide a thorough understanding of the disclosed embodiments. However, one or more embodiments may be practiced without these details. In other instances, well-known structures and devices may be shown in simplified form in order to simplify the drawing.

The terms "first," "second," and the like in the description and claims of the embodiments of the disclosure and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged as appropriate for the embodiments of the disclosure described herein. Furthermore, the terms "comprising" and "having," as well as any variations thereof, are intended to cover non-exclusive inclusions.

In the embodiments of the present disclosure, the terms "upper", "lower", "inner", "middle", "outer", "front", "rear", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the disclosed embodiments and their examples and are not intended to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation. Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meanings of these terms in the embodiments of the present disclosure can be understood by those of ordinary skill in the art as appropriate.

In addition, the terms "disposed," "connected," and "secured" are to be construed broadly. For example, "connected" may be a fixed connection, a detachable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. Specific meanings of the above terms in the embodiments of the present disclosure can be understood by those of ordinary skill in the art according to specific situations.

The term "plurality" means two or more unless otherwise specified.

The term "and/or" is an associative relationship that describes objects, meaning that three relationships may exist. For example, a and/or B, represents: a or B, or A and B.

It should be noted that, in the case of no conflict, the embodiments and features in the embodiments of the present disclosure may be combined with each other.

As shown in fig. 1 to 17, the embodiment of the present disclosure provides an upper air inlet burner, which is mounted on a panel, the upper air inlet burner (hereinafter, referred to as a burner) includes a fire cover and an injector 503, and the injector 503 is located above the panel. The primary air and the secondary air of the upper air inlet burner are both from the upper part of the panel. The fire covers 80 define a gas mixing chamber 804 with fire holes, the number of the fire covers 80 is multiple, and the multiple fire covers 80 comprise an inner fire cover 30, an intermediate fire cover 20 and an outer fire cover 10 which are sleeved from inside to outside in sequence. The inner fire cover 30 defines a first air mixing chamber, and the inner fire cover 30 is provided with a first fire hole 301 communicated with the first air mixing chamber. The middle fire cover 20 defines a second gas mixing chamber 201, the middle fire cover 20 is provided with a second fire hole 202 and a third fire hole 203 which are communicated with the second gas mixing chamber 201, and the second fire hole 202 is positioned at the inner side of the third fire hole 203. The outer fire cover 10 defines a third gas mixing chamber 101 and is opened with a fourth fire hole 102 and a fifth fire hole 103 communicated with the third gas mixing chamber 101, and the fourth fire hole 102 is positioned at the inner side of the fifth fire hole 103. The fire cover is located above the ejector 503, and an outlet of the ejector 503 is communicated with the gas mixing chamber 804 of each fire cover and used for providing fuel gas for the fire cover. The gas mixing chamber 804 comprises a first gas mixing chamber, a second gas mixing chamber 201 and a third gas mixing chamber 101. The fire holes include the first fire hole 301, the second fire hole 202, the third fire hole 203, the fourth fire hole 102, and the fifth fire hole 103 described above.

In this embodiment, the burner can form five-ring fire through the inner fire cover 30, the middle fire cover 20 and the outer fire cover 10, so as to improve the flame area of the fire cover of the burner, further improve the fire uniformity of the fire cover, and ensure the heating uniformity of the burner to the cookware.

Optionally, the number of the ejectors 503 is multiple, and the number of the ejectors 503 is the same as that of the fire covers.

In this embodiment, each fire cover is communicated with the injector 503 to ensure the gas supply amount of each fire cover, and the gas supply of each fire cover is independent, so that various fires can be realized, and the use flexibility of the burner is improved. Illustratively, as shown in fig. 9, the number of the ejectors 503 is three, and the three ejectors 503 include a first ejector 5031, a second ejector 5033, and a third ejector 5035.

Optionally, as shown in fig. 12, the upper air inlet burner further includes a base 60, the base 60 is located below the ejector 503, the base 60 defines air-bleed passages, the air-bleed passages are communicated with the inlet of the ejector 503, and the number of the air-bleed passages is the same as that of the ejector 503 and corresponds to that of the ejector 503 one by one.

In this embodiment, the base 60 is used to support the injector 503 and the fire cover 80, so that the injector 503 is located above the panel, and a gap can exist between the injector 503 and the panel, so as to supply the primary air and the secondary air. The base 60 defines a bleed air passage to facilitate the delivery of municipal gas or gas within the gas tank into the eductor 503.

For example, when the number of the ejectors 503 is three, the number of the bleed air passages is three, and the three bleed air passages include a first bleed air passage, a second bleed air passage, and a third bleed air passage. An outlet of the first bleed air passage is communicated with an inlet of the first ejector 5031, an outlet of the second bleed air passage is communicated with an inlet of the second ejector 5033, and an outlet of the third bleed air passage is communicated with an inlet of the third ejector 5035.

Optionally, each bleed air channel includes a first through hole 602, a second through hole, and a first channel connected between the first through hole 602 and the second through hole, wherein the first through hole 602 is located below the second through hole, the first channel extends along a vertical direction, the first through hole 602 faces outward, the second through hole faces inward, and the second through hole is communicated with the inlet of the ejector 503, that is, the second through hole is an outlet of the bleed air channel, and the first through hole 602 is an inlet of the bleed air channel. The burner also comprises nozzles 6024, the nozzles 6024 are arranged at the second through holes, and the number of the second through holes is the same as that of the bleed air channels and corresponds to that of the bleed air channels one by one. The number of the nozzles 6024 is the same as that of the second through holes and corresponds to one.

Alternatively, where the eductor 503 is linear, as shown in fig. 10, the axis of the nozzle 6024 may be coaxial with the axis of the eductor 503 along the axis of the nozzle 6024. Therefore, the stability of the combustion system and the ejection effectiveness of primary air can be guaranteed, the smoke value is reduced, and the combustion efficiency of the combustor is guaranteed.

Alternatively, the nozzle 6024 may be coupled to or have a gap with the inlet of the eductor 503. The nozzle 6024 has a gap with the inlet of the ejector 503, that is, the nozzle 6024 does not contact the ejector 503, the ejecting capacity of the ejector 503 can be ensured by coaxial arrangement, and the ejection amount of the primary air can be increased.

Optionally, the nozzle 6024 is threaded at the second through hole. The outer wall surface of the first through hole 602 is provided with an external thread so as to be connected with an external gas pipeline.

For convenience of processing, a third through hole may be formed in the bottom of the base 60, and after the first channel is formed through the third through hole, a plugging member is further disposed at the third through hole, and the plugging member is used for plugging the third through hole.

Optionally, the burner further comprises a valve body, the valve body is communicated with inlets of the plurality of bleed air channels, and the valve body is used for adjusting the air inflow of each bleed air channel.

In this embodiment, a plurality of passages are arranged inside the valve body, and the passages are the same in number as the air-entraining passages and correspond to the air-entraining passages one by one. And a switch is also arranged in the valve body, and the switch can control the opening and closing of each channel so as to control the on-off of the air-entraining channel and the ejector 503.

Illustratively, the valve body is the tee bend valve body, and the switch and the button linkage of valve body, the button is located the combustor outside, and the user can adjust the switching of each passageway in the valve body through operating the button. For example, in practical applications, when the knob is rotated to 90 °, the burner is in an ignition state, and the three passages are fully opened. When the rotation reaches the final angle (for example, 180 degrees, 230 degrees and 270 degrees), only one channel is opened. When rotated to an angle between 90 deg. and the final angle, both channels are opened. When the rotation is 0-90 degrees, the three channels are fully opened, but the flow is smaller.

Through the form of three ejector 503, valve body and three fire lid, the form that three fire lid five rings of fire were not only can be realized to last air inlet burner, but also can adjust each ejector 503's gas flow, and then adjusts the flame size of five fire holes of three fire lid, and then adjusts the play fire flexibility of combustor.

Optionally, as shown in fig. 8 to 11 and 15, the burner further includes an air distribution assembly, which includes an air distribution cover 40 and an air distribution base 50. The gas distributing cover 40 and the gas distributing base 50 together define a gas passage configured with a gas inlet communicating with an outlet of the injector 503 and the gas passage 503, and an injector 503. The upper end portion of the gas distributing cover 40 defines a gas distributing passage and a gas outlet, and the gas in the gas distributing passage can flow into the gas distributing passage through the gas outlet. Wherein, the fire cover is arranged above the gas distribution channel. The number of the gas distribution channels is the same as that of the fire covers and corresponds to that of the fire covers one by one. It can be understood that: the gas distribution channel is communicated with the outlet of the ejector 503 and the gas mixing chamber 804 through a gas channel, that is, gas or mixed gas of air and gas (hereinafter, referred to as gas) sequentially flows through the gas guide channel, the ejector 503, the gas inlet, the gas channel, the gas outlet, the gas distribution channel and the gas mixing chamber 804 and then flows out through the fire hole of the fire cover.

In this embodiment, the gas distributing cover 40 and the gas distributing base 50 together enclose the gas channel and the injector 503, so as to provide gas to the fire cover and save the size of the burner. Divide the gas passageway to shunt the gas that the gas passageway flows out, then transmit the gas after the reposition of redundant personnel to the fire lid in, and then realize the intercommunication of ejector 503 and fire lid.

The air mixing chamber 804 is positioned above the air distribution channel, and the air mixing chamber 804 is communicated with the air distribution channel and jointly encloses to form an air mixing chamber. The gas mixing chamber can guarantee that the gas in the gas distribution channel cannot leak out to normally flow into the gas mixing chamber 804, and then flow out through the fire hole of the fire cover so as to facilitate the combustion of the fire cover.

Under the condition that the fire cover comprises three fire covers, the gas distribution channel comprises a first gas distribution channel 401, a second gas distribution channel 402 and a third gas distribution channel 405 which are sequentially sleeved from inside to outside. The third air mixing chamber 101 is communicated with the third air distribution channel 405 and is positioned above the third air distribution channel 405, and the third air mixing chamber 101 and the third air distribution channel 405 jointly enclose to form an outer ring air mixing chamber. The second air mixing chamber 201 is communicated with the second air distribution channel 402 and is positioned above the second air distribution channel 402, and the second air mixing chamber 201 and the second air distribution channel 402 jointly enclose to form a middle ring air mixing chamber. The first air mixing chamber is communicated with the first air distribution channel 401 and is positioned above the first air distribution channel 401, and the first air mixing chamber and the first air distribution channel 401 jointly enclose to form an inner ring air mixing chamber.

Alternatively, as shown in fig. 17, the inner wall surface of the air distribution cover 40 is provided with a limiting portion, the outer wall surface of the base 60 is provided with a limiting engagement portion 603, and when the limiting portion is engaged with the limiting engagement portion 603, the air distribution cover 40 and the base 60 are limited from rotating.

In this embodiment, the rotation of the air distribution cover 40 and the base 60 is limited, so that the rotation of the air distribution assembly can be avoided, and the coaxiality of the ejector 503 and the nozzle 6024 can be ensured.

Alternatively, as shown in fig. 14, the air distribution cover 40 includes an air distribution cover body and a skirt 403, the air distribution cover body is disposed above the air distribution base 50, the skirt 403 is disposed outside the air distribution cover body and extends along the circumferential direction of the air distribution cover 40, and the skirt 403 is at least partially inclined downward along the direction from inside to outside. In this embodiment, skirt 403 can prevent the soup that the culinary art produced from flowing to minute gas holder 50 below, can guide the soup to flow to the supporting device on moreover, for example liquid-bearing dish 70 etc..

Optionally, as shown in fig. 12, the base 60 includes a base body 606 and a gas outlet portion 601, the gas outlet portion 601 is located above the base body 606 and on one side of the inlet of the induction pipe 503, and the nozzle 6024 is disposed in the gas outlet portion 601; the skirt 403 extends downward and is sleeved outside a portion of the base 60, the inner wall surface of the skirt 403 is provided with a limiting portion, and the outer wall surface of the air outlet 601 is provided with a limiting matching portion 603.

In this embodiment, the lower end surface of the gas distributing cover 40 is connected with the upper end surface of the gas distributing base 50 to form a gas passage and an injector 503. Skirt 403 can downwardly extend to base 60 department, and portion 601 of giving vent to anger is located the upper end of base 60 and is located one side of ejector 503, and then the setting of spacing portion of being convenient for and spacing cooperation portion 603 to realize dividing the restriction rotation between gas lid 40 and the base 60.

Alternatively, as shown in fig. 9 and 17, the stopper portion includes a first stopper protrusion 4031, and the first stopper protrusion 4031 is protruded from the inner wall surface of the skirt 403; the limit matching part 603 comprises a side elevation 6031, and the side elevation 6031 is positioned on at least one end part of the outer wall surface of the air outlet part 601 along the circumferential direction of the outer wall surface; when the limiting part is matched with the limiting matching part 603, the first limiting protrusion 4031 and the side vertical surface 6031 are sequentially arranged along the circumferential direction of the air outlet part 601, and the first limiting protrusion 4031 is attached to the side vertical surface 6031.

In this embodiment, the first limit protrusion 4031 is attached to the side vertical surface 6031 of the air outlet portion 601, so that the air distribution cover 40 can be limited from rotating circumferentially relative to the base 60, and the air distribution assembly has no degree of freedom of rotation circumferentially.

Optionally, the limiting part further includes a second limiting protrusion 4032, the second limiting protrusion 4032 is convexly arranged on the inner wall surface of the skirt 403, and is sequentially spaced from the first limiting protrusion 4031 along the circumferential direction of the gas distribution cover 40, and the length of the second limiting protrusion 4032 is smaller than that of the first limiting protrusion 4031; when the limiting part is matched with the limiting matching part 603, the second limiting protrusion 4032 is located above the air outlet part 601 and abuts against the upper wall surface of the air outlet part 601, and the limiting matching part 603 comprises the upper wall surface of the air outlet part 601.

In this embodiment, the second limit protrusion 4032 cooperates with the first limit protrusion 4031 to limit the rotation of the air distribution cover 40 relative to the base 60, and can also play a role in positioning to facilitate the installation of the air distribution assembly with the base 60.

Optionally, the limiting part further includes a first arc-shaped surface 6032, and the first arc-shaped surface 6032 is located on the inner wall surface of the skirt 403; the limit matching part 603 further comprises a second arc-shaped surface 4033, and the second arc-shaped surface 4033 is located on the outer wall surface of the gas outlet part 601 facing the gas distribution cover 40; when the limiting part is matched with the limiting matching part 603, the first arc-shaped surface 6032 is attached to the second arc-shaped surface 4033.

In this embodiment, the first arc-shaped surface 6032 and the second arc-shaped surface 4033 are attached to each other, so that the air distribution assembly cannot move in the radial direction relative to the base 60, and the air distribution assembly has no freedom in the front, back, left and right directions.

Illustratively, as shown in fig. 9, a first limit projection 4031, a second limit projection 4032, and a second arcuate surface 4033 are provided on the inner wall surface of the skirt 403.

Optionally, as shown in fig. 12, a supporting surface 604 is disposed on an upper surface of the base body 606, a supporting column 5092 is disposed on a lower surface of the air distribution base 50, and when the air distribution assembly is disposed above the base 60, the supporting surface 604 abuts against the supporting column 5092, so as to achieve positioning and matching between the air distribution assembly and the base 60. In this embodiment, the support surface 604 and the support column 5092 cooperate to facilitate the installation and positioning of the base 60 and the air distribution base 50, so as to facilitate the installation of the air distribution assembly on the base 60.

Optionally, the number of the supporting surfaces 604 is multiple, and the number of the supporting columns 5092 is the same as the number of the supporting surfaces 604 and corresponds to one. Illustratively, as shown in FIG. 12, the number of support surfaces 604 is two, as are the number of support posts 5092. Specifically, the two support surfaces 604 are located on the same straight line. To facilitate engagement of the support column 5092 with the support surface 604.

Optionally, the gas distribution seat 50 is provided with a limiting hole 509 penetrating through the gas distribution seat in the thickness direction, the upper surface of the base 60 body 606 is provided with a limiting column 6033, and when the gas distribution assembly is arranged above the base 60, the limiting column 6033 is located in the limiting hole 509. In this embodiment, the limiting column 6033 penetrates through the limiting hole 509, and the limiting column 6033 can limit rotation in the limiting hole 509, so that the gas distribution seat 50 can be limited from rotating relative to the base 60.

Optionally, the inner diameter of the retention apertures 509 is sized 0.3mm to 0.5mm larger than the outer diameter of the retention posts 6033. Thus, the limiting column 6033 can be inserted into the limiting hole 509, and the limiting hole 509 can limit the rotation of the limiting column 6033. Specifically, the inner diameter of the stopper hole 509 may be larger than the outer diameter of the stopper column 6033 by 0.3mm, 0.4mm, 0.5mm, or the like.

Optionally, the number of the limiting posts 6033 is multiple, and the number of the limiting holes 509 is the same as the number of the limiting posts 6033 and corresponds to one another.

Optionally, the burner further includes a thermocouple and an ignition needle, at least two of the spacing columns 6033 are provided with through holes, and the thermocouple and/or the ignition needle passes through the through holes of the spacing columns 6033 and then passes through the spacing holes 509, so as to cooperate with the fire cover to extinguish and/or ignite.

Optionally, the air distribution cover 40 is detachably or fixedly connected with the air distribution base 50. The detachable connection facilitates the installation, detachment and cleaning of the gas distribution cover 40 and the gas distribution base 50. The fixed connection facilitates the taking of the gas distribution cover 40 and the gas distribution base 50 and increases the structural stability.

Under the condition that the air distribution cover 40 is detachably connected with the air distribution disc, a first screw hole 404 is convexly arranged on the outer peripheral wall of the body of the air distribution cover 40, a second screw hole 5091 is convexly arranged on the outer peripheral wall of the air distribution seat 50, the first screw hole 404 corresponds to the second screw hole 5091, and a first fastener penetrates through the first screw hole 404 and the second screw hole 5091 to connect the air distribution cover 40 with the air distribution seat 50; the upper end of the skirt 403 is located above the first screw hole 404, and the lower end of the skirt 403 extends to the outside of the first screw hole 404, or the lower end of the skirt 403 extends to the outside of the second screw hole 5091.

In this embodiment, the air distribution seat 50 and the air distribution cover 40 are connected by screws, which is convenient for the installation, detachment and cleaning of the air distribution seat 50 and the air distribution cover 40. The skirt 403 can shield the screw holes to increase the aesthetic appearance of the burner and to avoid soup flowing to the screw holes to affect the use of the screw holes.

Optionally, the number of the first screw holes 404 is multiple, the multiple first screw holes 404 are sequentially arranged at intervals along the circumferential direction of the air distribution cover 40, and the number of the second screw holes 5091 is the same as that of the first screw holes 404 and corresponds to that of the first screw holes 404 one by one, so that the connection strength between the air distribution cover 40 and the air distribution disk is enhanced.

Optionally, as shown in fig. 13, the burner further includes a liquid bearing disc 70, the liquid bearing disc 70 is located between the gas distribution seat 50 and the base 60, and a gap exists between the gas distribution seat 50 and the liquid bearing disc 70 to facilitate air flow; wherein, the liquid bearing plate 70 is provided with an avoiding hole (for the convenience of distinguishing, hereinafter, referred to as a first avoiding hole), and the upper end of the bleed air channel passes through the first avoiding hole and then is communicated with the injector 503.

In this embodiment, the gas enters the bleed air passage of the base 60 through a pipe from below the panel, and the base 60 supports the ejector 503 at a distance from the panel. The liquid bearing disc 70 is used for bearing soup of a pot, and the avoiding hole of the liquid bearing disc 70 can facilitate causing the outlet of the passage to correspond to and be communicated with the inlet of the ejector 503.

Optionally, the liquid bearing disc 70 is further provided with a first connection hole, the base 60 is provided with a second connection hole 605, and a second fastener penetrates through the first connection hole and the second connection hole 605 to realize connection between the liquid bearing disc 70 and the base 60; optionally, the liquid bearing plate 70 is attached to the base 60, and a gap exists between the liquid bearing plate 70 and the lower surface of the air distributor 50, so as to facilitate air flowing into the combustor.

Optionally, as shown in fig. 13, the burner further includes a plug cap 702, the plug cap 702 is adapted to fit the first connection hole, and when the liquid receiving tray 70 is separated from the base 60, the plug cap 702 can cover the first connection hole.

In this embodiment, after the gas distribution assembly and the fire cover are combined and removed, the blocking cap 702 is disposed on the first connection hole of the liquid bearing disc 70, so that oil contamination can be prevented from reaching the screw position and being difficult to clean.

The liquid bearing plate 70 is further provided with a second avoiding hole, and the supporting surface 604 of the base 60 passes through the second avoiding hole to extend to the upper side of the liquid bearing plate 70 and abut against the supporting column 5092. Illustratively, as shown in fig. 13, the number of the first connection holes is three, and the number of the plugging caps 702 is also three. After the gas distribution assembly and the fire cover are removed, the upper surface of the liquid bearing disc 70 is only provided with 5 bulges (three plugging caps 702 and two supporting surfaces 604), an ignition needle, a thermocouple and a gas outlet part 601, and the whole body is easy to clean.

Optionally, the combustor further comprises a gas distribution plate, the gas distribution plate is located in the gas mixing cavity, and the gas distribution plate extends along the circumferential direction of the gas mixing cavity to divide the gas mixing cavity into an inner gas mixing cavity and an outer gas mixing cavity. Wherein, the inner side gas mixing cavity is communicated with the inner side fire hole 8021 of the fire cover, and the outer side gas mixing cavity is communicated with the outer side fire hole 8011 of the fire cover.

In this embodiment, the gas-distributing plate divides the gas-mixing chamber into an inner gas-mixing chamber and an outer gas-mixing chamber, so that the inner fire hole 8021 and the outer fire hole 8011 of the fire cover can be prevented from competing for gas, and normal combustion of the inner fire hole 8021 and the outer fire hole 8011 can be ensured. Specifically, the gas distribution plate can divide a gas distribution channel into an inner gas distribution channel and an outer gas distribution channel, and divide the gas mixing chamber 804 of a fire cover into an inner gas mixing chamber 8041 and an outer gas mixing chamber 8042.

Optionally, each fire cover is annular, and when the fire cover is an outer fire cover 10 and/or an intermediate fire cover 20, the fire cover 80 includes a top wall 803, an outer side wall 801 and an inner side wall 802, and the top wall 803 is annular. The outer side wall 801 is located below the top wall 803 and is annular, and the outer side wall 801 is provided with an outer fire hole 8011. The inner side wall 802 is located below the top wall 803 and located inside the outer side wall 801, and is annular, and the inner side wall 802 is provided with an inner fire hole 8021. The inner sidewall 802, outer sidewall 801, and top wall 803 collectively define a plenum 804. When the fire lid was covered for interior fire, interior fire lid 30 included outer panel and roof, and the outer panel is the annular to be located the below of roof, first fire hole 301 has been seted up to the outer panel.

In some optional embodiments, the fire holes of the fire cover include a main fire hole and a flame stabilizing hole, wherein the fire cover is provided with the main fire hole (corresponding to the first fire hole 301, the second fire hole 202, the third fire hole 203, the fourth fire hole 102 and/or the fifth fire hole 103) and the flame stabilizing hole, wherein the main fire hole and the flame stabilizing hole are both multiple in number, the multiple main fire holes are sequentially arranged along the circumferential direction of the fire cover at intervals, the multiple flame stabilizing holes are also sequentially arranged along the circumferential direction of the fire cover at intervals, the outer wall surface of the side wall of the fire cover is further provided with a flame stabilizing groove, the flame stabilizing groove extends along the circumferential direction of the fire cover, the inlet end of the flame stabilizing hole is communicated with the gas mixing chamber 804, and the outlet end of the flame stabilizing hole is communicated with the flame stabilizing groove.

In some alternative embodiments, as shown in fig. 6, the main fire holes include first main fire holes 806, the flame-stabilizing holes include first flame-stabilizing holes 8061, and at least two first flame-stabilizing holes 8061 are provided between each adjacent two of the first main fire holes 806. In this embodiment, the distance between the two first main fire holes 806 is large, and at least two first flame stabilizing holes 8061 are arranged between the two adjacent first main fire holes 806, so that the sufficient gas flow at the flame stabilizing grooves can be ensured, and poor fire transfer can be prevented.

Optionally, the flame holding grooves are located below the first main fire holes 806, wherein the height of the center of the first flame holding holes 8061 is less than the height of the center of the first main fire holes 806.

In this embodiment, the height of the center of the first flame stabilizing hole 8061 is smaller than the height of the center of the first main flame hole 806, and the first flame stabilizing hole 8061 can stabilize the flame of the middle lower portion of the first main flame hole 806.

Optionally, the number of first primary fire holes 806 is 18-22. The number of the first main fire holes 806 is too large, the density of the first main fire holes 806 is too large, and the adjacent first main fire holes 806 are liable to compete for air and generate smoke. The number of the first main fire holes 806 is too small, and the distance between the adjacent first main fire holes 806 is too large, so that the annular fire is not easily formed, which is not beneficial to the heating of the burner. Illustratively, the number of first primary fire holes 806 is 18, 20, or 22.

Optionally, the number of the at least two first flame stabilizing holes 8061 is 2-5. Illustratively, the number of first flame stabilizing holes 8061 between two first primary fire holes 806 is 2, 3, 4, or 5. The number of the first flame stabilizing holes 8061 is too large, and the adjacent first flame stabilizing holes 8061 compete for air, so that smoke is easily generated. As shown in fig. 6, 3 first flame stabilizing holes 8061 are provided between two adjacent first main fire holes 806.

In one embodiment, the outer sidewall 801 of the fire cover is provided with a first main fire hole 806, a first flame stabilizing hole 8061 and a flame stabilizing groove. The inner side wall 802 of the fire cover is provided with a fire hole group communicated with the gas mixing chamber 804, the fire hole group comprises a second main fire hole 8062 and at least two second flame stabilizing holes 8063, the second flame stabilizing holes 8063 are communicated with the gas mixing chamber 804 and the outside, and two second flame stabilizing holes 8063 of the at least two second flame stabilizing holes 8063 are respectively positioned on two sides of the second main fire hole 8062.

In this embodiment, the second main fire holes 8062 are respectively provided with second flame stabilizing holes 8063 at two sides, and the second main fire holes 8062 are stabilized by the second flame stabilizing holes 8063 from two directions, so that the flame stabilizing effect on the second main fire holes 8062 can be enhanced.

Optionally, the number of the fire hole groups is multiple, and the multiple fire hole groups are arranged at intervals in sequence along the circumferential direction of the fire cover. A plurality of fire hole group intervals set up, can avoid striving for the air between a plurality of fire hole groups, reduce the flue gas value, the processing of the fire lid of being convenient for moreover.

In one embodiment, when the fire cover 80 is the middle fire cover 20, the inner side wall 802 of the middle fire cover 20 is provided with the second fire hole groups 2021, and the number of the second fire hole groups 2021 is 8-12.

When the number of the second fire hole groups 2021 is more than 12, air is contended between the adjacent second fire hole groups 2021, and smoke is easily generated. The number of the second fire hole groups 2021 is less than 8, and the distance between the adjacent fire hole groups is too large, resulting in non-uniformity of flames of the fire cover on the circumferential line thereof.

Optionally, the number of the fourth main fire holes (first fire holes 301) of the inner fire cover 30 is the same as the number of the second fire hole groups 2021 of the middle fire cover 20, wherein the fourth main fire holes of the inner fire cover 30 and the fire hole groups of the middle fire cover 20 are arranged in a staggered manner. Therefore, the cross of the first ring fire and the second ring fire can be avoided, and the generated smoke is reduced.

For example, the number of the second fire hole groups 2021 may be 8, 10 or 12. Correspondingly, the number of the fourth main fire holes of the inner fire cover 30 is also 8, 10 or 12.

Optionally, the number of the first main fire holes 806 (the third fire holes 203) of the outer side wall 801 of the middle fire cover 20 is the same as that of the third main fire holes (the fourth fire holes 102) of the inner side wall 802 of the outer fire cover 10. Wherein, first main fire hole 806 sets up with third main fire hole is crisscross to avoid first main fire hole 806 and third main fire hole to compete for the air, reduce the production of flue gas.

For example, as shown in fig. 1, in the case that the burner includes three fire covers, the outer sidewall 801 of the outer fire cover 10 is provided with a fifth main fire hole (fifth fire hole 103) and a first flame holding groove 1031, the inner sidewall 802 of the outer fire cover 10 is provided with a first fire hole group 1021, the outer sidewall 801 of the middle fire cover 20 is provided with a first main fire hole 806 and a second flame holding groove 2031, the inner sidewall 802 of the middle fire cover 20 is provided with a second fire hole group 2021, and the outer sidewall 801 of the inner fire cover 30 is provided with a fourth main fire hole.

Alternatively, as shown in fig. 16 and 17, the upper end of the gas distribution plate is connected with the lower wall surface of the fire cover 80 in a radial sealing and end surface sealing manner, and/or the lower end of the gas distribution plate is connected with the upper wall surface of the gas distribution cover 40 in a radial sealing and end surface sealing manner.

In this embodiment, the gas distribution plate is hermetically connected to the fire cover 80 or the gas distribution cover 40 by a combination of radial sealing and end face sealing. The airtight independence of outside air mixing cavity and inboard air mixing cavity can be strengthened, and then the air mixing cavity and the air mixing cavity of the outside are avoided from being mixed.

In a specific embodiment, under the condition that the upper end portion of the gas distribution plate is connected with the lower wall surface of the fire cover 80 in a radial sealing and end face sealing manner, one of the upper end portion of the gas distribution plate and the lower wall surface of the fire cover 80 is provided with a first groove, the other of the upper end portion of the gas distribution plate and the lower wall surface of the fire cover 80 is provided with a first protrusion 406 matched with the first groove, and when the first protrusion 406 is positioned in the first groove, the upper end portion of the gas distribution plate and the lower wall surface of the fire cover can be connected in a radial sealing and end face sealing manner.

In this embodiment, first arch 406 and first recess simple structure, easily processing realizes two cavitys of single fire lid, and then realizes two rings fires of single fire lid, and two adjacent gas mixing chambers do not communicate gas. Moreover, the structure of the first protrusion 406 and the first groove can realize two radial seals and one end face seal, and the sealing effect is improved.

In another embodiment, in a case that the lower end of the gas distribution plate is connected with the upper wall of the gas distribution cover 40 in a radial sealing manner and an end sealing manner, one of the lower end of the gas distribution plate and the upper wall of the gas distribution cover 40 is provided with a second groove, the other of the upper end of the gas distribution plate and the upper wall of the gas distribution cover 40 is provided with a second protrusion adapted to the second groove, and when the second protrusion is located in the second groove, the lower end of the gas distribution plate and the upper wall of the gas distribution cover 40 can be connected in a radial sealing manner and an end sealing manner. Similarly, the second bulge and the second groove are simple in structure, easy to process and good in sealing effect. The single fire cover can be provided with two cavities, so that two rings of fire of the single fire cover can be realized, and two adjacent mixed air cavities are not communicated with air. The structure of the second protrusion and the second groove can realize two radial seals and one end face seal, and further can improve the sealing effect.

As shown in fig. 8 and 16, the gas distribution cover 40 includes a bottom wall 409, an outer annular wall 4092 and an inner annular wall 4091, the bottom wall 409 being annular; the outer ring wall 4092 is positioned above the bottom wall 409 and is annular; the inner ring wall 4091 is positioned above the bottom wall 409 and is positioned at the inner side of the outer ring wall 4092 and is annular; the bottom wall 409, the outer ring wall 4092 and the inner ring wall 4091 jointly enclose an air distribution channel; wherein, the lower end part of the outer side wall 801 is provided with a first step 8071, and the upper end part of the outer ring wall 4092 is matched with the first step 8071; and/or, the lower end part of the inner side wall 802 is configured with a second step part 8072, and the upper end part of the inner ring wall 4091 is matched with the second step part 8072.

In this embodiment, the arrangement of the first step portion 8071 and the second step portion 8072 enables the fire cover and the inner and outer sides of the gas distribution cover 40 to realize end face sealing and one side radial sealing, so that the sealing effect of the inner and outer sides of the fire cover and the gas distribution cover 40 can be ensured, and gas leakage is avoided.

Each of the second and third

gas distribution channels

402 and 405 is provided with the bottom wall 409, the outer annular wall 4092 and the inner annular wall 4091 as described above, so that the middle fire cover 20 and the outer fire cover 10 can be fitted with the corresponding gas distribution channels to form a gas mixing chamber.

Optionally, when the fire cover 80 is the outer fire cover 10 and/or the middle fire cover 20, the inner side wall 802 of each fire cover includes a first wall section 8022 and a second wall section 8023 connected, and the first wall section 8022 is provided with an inner fire hole 8021; the second wall section 8023 is disposed below the first wall section 8022; in the case where the lower end portion of the inner side wall 802 is configured with the second stepped portion 8072, the second wall section 8023 is configured with the second stepped portion 8072, in which the first wall section 8022 is inclined downward in the outside-to-inside direction. In this embodiment, the first wall section 8022 is downwardly inclined in an outside-to-inside direction, that is, the upper surface of the first wall section 8022 is upwardly facing, such that the fire angle of the inner fire holes 8021 of the first wall section 8022 is upwardly inclined. Thereby facilitating the fire of the inner fire hole 8021 and the flame at the inner fire hole 8021 to heat the pot.

Optionally, when the fire cover is the outer fire cover 10 and/or the middle fire cover 20, the outer side wall 801 includes a third wall section 8012 and a fourth wall section 8013, the third wall section 8012 is provided with an outer fire hole 8011; the fourth wall section 8013 is arranged below the third wall section 8012; in the case where the lower end portion of the outer side wall 801 is configured with the first step portion 8071, the fourth wall section 8013 is configured with the first step portion 8071, wherein the outer wall surface of the third wall section 8012 is flush with the outer wall surface of the outer ring wall 4092 when the first step portion 8071 is fitted to the outer ring wall 4092. In this embodiment, when the first step portion 8071 is fitted to the outer ring wall 4092, the first step portion 8071 is located inside the outer ring wall 4092, and the third wall section 8012 is flush with the outer wall surface of the outer ring wall 4092, so that not only can the fire cover be hermetically connected to the outer side of the air distribution cover 40, but also the aesthetic property and the smoothness of connection between the fire cover and the air distribution plate can be improved.

Optionally, when the second stepped portion 8072 is fitted to the inner annular wall 4091, the second stepped portion 8072 is located on the inner side of the inner annular wall 4091. When the first stepped portion 8071 is fitted to the outer ring wall 4092, the first stepped portion 8071 is positioned on the inner side of the outer ring wall 4092.

Alternatively, in the case where the lower end portion of the gas distribution plate is connected to the upper wall surface of the gas distribution cover 40, the gas distribution plate is connected to the bottom wall 409 and is located between the outer ring wall 4092 and the inner ring wall 4091. Wherein, the gas distribution plate protrudes out of the outer ring wall 4092 and the inner ring wall 4091. In this embodiment, the gas distribution plate protrudes from the outer annular wall 4092 and the inner annular wall 4091, so that the gas distribution plate is convenient to abut against or connect with the lower wall surface of the fire cover, and the separation effect of the gas distribution plate is realized.

Optionally, the number of gas distribution plates is a plurality of, and a plurality of gas distribution plates include first gas distribution plate 4011, and first gas distribution plate 4011 is located the outer loop and mixes the gas cavity to extend along the circumference of outer loop gas cavity, separate the outer loop gas cavity for first gas cavity and second gas cavity, and first gas cavity is located the outside of second gas cavity, and first gas cavity and fifth fire hole 103 are linked together, and second gas cavity and fourth fire hole 102 are linked together. Wherein, the outer gas mixing cavity comprises a first gas mixing cavity, the inner gas mixing cavity comprises a second gas mixing cavity, the outer fire hole 8011 comprises a fifth fire hole 103, and the inner fire hole 8021 comprises a fourth fire hole 102. The setting of first gas distribution plate 4011 is divided into two independent cavitys with outer fire lid 10, and then can avoid fourth fire hole 102 and fifth fire hole 103 to compete the gas.

The first gas distributing plate 4011 divides the third gas mixing chamber 101 into an outer ring outer gas mixing chamber 1041 and an outer ring inner gas mixing chamber 1042 which are sequentially sleeved from outside to inside, and the first gas distributing plate 4011 divides the third gas distributing channel 405 into an outer ring outer gas distributing channel 4012 and an outer ring inner gas distributing channel 4013 which are sequentially sleeved from outside to inside.

Optionally, as shown in fig. 16, the plurality of gas distribution plates further include a second gas distribution plate 4021 located in the middle ring gas mixing cavity and extending along the circumferential direction of the middle ring gas mixing cavity to divide the middle ring gas mixing cavity into a third gas mixing cavity and a fourth gas mixing cavity, the third gas mixing cavity is located outside the fourth gas mixing cavity, the third fire hole 203 is communicated with the third gas mixing cavity, and the second fire hole 202 is communicated with the fourth gas mixing cavity. The outer gas mixing cavity comprises a third gas mixing cavity, the inner gas mixing cavity comprises a fourth gas mixing cavity, the outer fire hole 8011 comprises a third fire hole 203, and the inner fire hole 8021 comprises a second fire hole 202. The setting of first gas distribution board 4011 is divided into two independent cavitys with well fire lid 20, and then can avoid second fire hole 202 and third fire hole 203 to compete the gas.

The second gas distribution plate 4021 divides the second gas mixing chamber 201 into a middle ring outer gas mixing chamber 2041 and a middle ring inner gas mixing chamber 2042 which are sequentially sleeved from outside to inside, and the second gas distribution plate 4021 divides the second gas distribution channel 402 into a middle ring outer gas distribution channel 4022 and a middle ring inner gas distribution channel 4023 which are sequentially sleeved from outside to inside.

Optionally, an outlet of the first ejector 5031 is in communication with the first gas mixing chamber, and an outlet of the second ejector 5033 is in communication with the second gas mixing chamber. An outlet of the first ejector 5031 is communicated with the third gas mixing cavity, and an outlet of the second ejector 5033 is communicated with the fourth gas mixing cavity. An outlet of the third ejector 5035 is communicated with the inner ring gas mixing cavity.

It can be understood that: the first ejector 5031 provides fuel gas for the first gas mixing cavity and the third gas mixing cavity, and the second ejector 5033 provides fuel gas for the second gas mixing cavity and the fourth gas mixing cavity. The ejector 503 is arranged to simultaneously provide gas for the two gas mixing cavities of the two fire covers, so that the gas supply amount of the two gas mixing cavities can be conveniently adjusted, and the arrangement of the three ejector 503, the three fire covers and the gas distribution assembly is convenient, so that the burner can form a five-ring fire form.

Optionally, the fire cover is further provided with a fire transfer groove 805, the fire transfer groove 805 sequentially penetrates through the inner side wall 802, the top wall 803 and the outer side wall 801, and the fire transfer groove 805 is upwardly opened and is communicated with the gas mixing chamber 804.

In this embodiment, the fire cover can be an outer fire cover 10 or a middle fire cover 20, and when the fire cover is the middle fire cover 20, the middle fire cover 20 is provided with a first fire transfer groove 106, and the first fire transfer groove 106 is used for transferring fire between two ring fire and three ring fire. When the fire cover is the outer fire cover 10, the outer fire cover 10 is provided with a second fire transfer groove 206, and the second fire transfer groove 206 is used for transferring fire between four-ring fire and five-ring fire.

Optionally, as shown in fig. 2 to 6, the fire cover is provided with a first groove, and in the case that the gas distribution cover 40 is provided with a first protrusion 406, the fire cover further includes a sealing protrusion, the sealing protrusion is disposed on at least one groove wall of the first groove corresponding to the fire transfer groove 805, and the sealing protrusion extends downward, and when the fire cover is disposed on the gas distribution cover 40, the sealing protrusion can be attached to the first protrusion 406, so as to achieve radial sealing between the fire cover at the fire transfer groove 805 and the gas distribution cover 40.

In this embodiment, the sealing protrusion can increase the sealing effect of the inner air mixing cavity and the outer air mixing cavity, and prevent the inner air mixing cavity and the outer air mixing cavity at the fire transfer groove 805 from being mixed with air.

Optionally, the fire transfer groove 805 penetrates through a groove wall of the first groove, a through groove 1051 is formed at an upper end of the sealing protrusion, and the through groove 1051 is communicated with the fire transfer groove 805. This can prevent the first groove and the sealing projection from blocking the fire passage of the fire transfer groove 805 to ensure fire transfer stability of the fire transfer groove 805.

Optionally, as shown in fig. 16, two opposite sidewalls in the fire transfer chute 805 are both provided with a drilling 107, one end of the drilling 107 is communicated with the first outer side gas mixing chamber 8042, the other end of the drilling 107 is closed, and the outer side gas mixing chamber 8042 includes an outer ring outer gas mixing chamber 1041; wherein the bore 107 is inclined upwardly in an inside-out direction.

In this embodiment, the drill holes 107 make the gas in the outer mixing chamber 1041 have a tendency to flow outward, which can increase the fire-conducting property of the fire-conducting channel 805. Without the bore 107, the gas flows primarily vertically upward through the flame holding grooves, crossing outward flow, affecting fire transfer to the fire transfer grooves 805.

Optionally, when the fire cover is the outer fire cover 10, the outer side wall 801 includes the first outer side wall 108, the first outer side wall 108 is further provided with a first flame stabilizing hole 8061 and a first flame stabilizing slot 1031, an inlet end of the first flame stabilizing hole 8061 is communicated with the outer ring outer gas mixing chamber 1041, an outlet of the first flame stabilizing hole 8061 is communicated with the first flame stabilizing slot 1031, and the first flame stabilizing slot 1031 is communicated with the outside. Wherein the bore 107 is located above the first flame stabilizing hole 8061.

The inner end of the drilling hole 107 is positioned above the first flame stabilizing hole 8061 and below the flame transfer groove 805, so that the depth of the drilling hole 107 can be increased, and the gas drainage capacity of the drilling hole 107 is further increased.

Optionally, the first flame stabilizing holes 8061 are upwardly inclined in an inside-to-outside direction, wherein the inclination angle of the first flame stabilizing holes 8061 is greater than the inclination angle of the bore 107.

In this embodiment, the inclination angle of the drilling 107 is smaller than that of the flame stabilizing hole, so that the fuel gas guided by the drilling 107 can flow out from the outer end of the flame transfer groove 805, and the flame at the outer end of the flame transfer groove 805 is prevented from leaving the flame, thereby ensuring that the flame in the flame transfer groove 805 can be stably transferred to the main flame hole and the flame stabilizing groove.

Optionally, the first outer side wall 108 is further provided with a fifth fire hole 103, and the diameter of the drilling hole 107 is smaller than the diameter of the fifth fire hole 103 and larger than the diameter of the first flame stabilizing hole 8061. Therefore, the air inflow of the drill hole 107 can be guaranteed, the guiding amount of the drill hole 107 to the fuel gas is further guaranteed, the situation that the fifth fire hole 103 adjacent to the drill hole 107 strives for the fuel gas can be avoided, and flame combustion of the fifth fire hole 103 adjacent to the drill hole 107 is guaranteed.

Optionally, when the fire cover is the middle fire cover 20, the outer side wall 801 includes a second outer side wall 207, the second outer side wall 207 is provided with a second sealing protrusion 205, the second sealing protrusion 205 and the second outer side wall 207 are integrated, the second outer side wall 207 is provided with a second flame stabilizing groove 2031, a second flame stabilizing hole 8063 is provided at the bottom of the second sealing protrusion 205, an inlet end of the second flame stabilizing hole 8063 is communicated with the middle ring outer gas mixing chamber 2041, an outlet end of the second flame stabilizing hole 8063 is communicated with the second flame stabilizing groove 2031, and the outer side gas mixing chamber 8042 includes the middle ring outer gas mixing chamber 2041.

In this embodiment, the second flame stabilizing hole 8063 is disposed at the second sealing protrusion 205, which can ensure that the second flame stabilizing groove 2031 corresponding to the second sealing protrusion 205 can be communicated with the middle ring outer gas mixing chamber 2041, so as to improve the fire discharging uniformity of the fire cover.

Optionally, third fire holes 203 are opened at two junctions of the second sealing protrusion 205 and the inner wall surface of the second outer sidewall 207. The third fire hole 203 is formed at the joint of the second sealing bulge 205 and the inner wall surface of the second outer side wall 207, so that a fire hole can be formed at the second sealing bulge 205, and the fire uniformity of the fire cover is further ensured.

Alternatively, the number of the second flame stabilizing holes 8063 at the second sealing protrusion 205 is plural, and the plural second flame stabilizing holes 8063 are located between the two third flame holes 203. Because the distance between the two third flame holes 203 is large, the second flame stabilizing holes 8063 can ensure that the flow rate of the second flame stabilizing groove 2031 is sufficient, and poor flame transfer is prevented.

Optionally, as shown in fig. 6 and 7, the inner sidewall 802 of the fire cover is further provided with a fire transfer hole 2061 communicated with the gas mixing chamber 804, the fire transfer hole 2061 corresponds to the fire transfer groove 805, wherein an inner wall surface of the gas mixing chamber 804 corresponding to the fire transfer hole 2061 is recessed to form an aggregation groove 2062.

In this embodiment, the fire transfer apertures 2061 are used to transfer flames between the inner sidewall 802 and the outer sidewall 801 of the fire cover. The collection groove 2062 is provided so that the fuel gas can be collected in the collection groove 2062, thereby ensuring the fuel gas supply amount at the flame transfer holes 2061. Thereby ensuring the fire transfer efficiency of the fire transfer holes 2061.

The collection grooves 2062 communicate with the fire transfer grooves 805 to facilitate communication between the fire transfer holes 2061 and the fire transfer grooves 805.

Optionally, the inner wall surface of the top wall 803 and/or the inner wall surface of the inner sidewall 802 of the fire lid are recessed to form an accumulation chamber 2062.

Optionally, the fire cover is provided with a first groove, and in the case that the gas distribution cover 40 is provided with the first protrusion 406, the first groove is communicated with the fire transfer groove 805, the inner groove wall of the first groove is provided with a first groove-shaped channel 2063, and the first groove-shaped channel 2063 is communicated with the fire transfer hole 2061 and the first groove.

In this embodiment, when the fire transfer grooves 805 transfer fire, a part of the fuel gas flows upward along the fire transfer grooves 805, and another part of the fuel gas can flow through the first groove-shaped passages 2063. This can ensure the fire transfer stability of the fire transfer grooves 805 and the fire transfer properties to the fire holes and the flame holding grooves.

Optionally, when the sealing protrusion and the inner wall surface of the outer side wall 801 of the fire cover are of an integral structure, the fire cover is further provided with a through hole 2064, the through hole 2064 sequentially penetrates through the sealing protrusion and the outer side wall 801, the through hole 2064 is communicated with the first groove and the outside, and the through hole 2064 corresponds to and is communicated with the first groove-shaped channel 2063.

In this embodiment, after the fuel gas flowing out through the first groove-shaped channel 2063 flows to the through hole 2064, the flame flowing out through the through hole 2064 is the main flame, which not only can ignite the flame stabilizing groove where the fire cover is located, but also can transmit the flame to the fire hole of another fire cover adjacent to the fire cover, so as to realize the fire transmission between the fire covers.

Alternatively, the through-holes 2064 are located at the upper portion of the second sealing protrusion 205, and the outer ends of the through-holes 2064 are located above the flame holding grooves, and the outer ends of the through-holes 2064 are located between two adjacent fire holes. This ensures that the through holes 2064 can transfer flame to the flame holding grooves, which in turn transfer flame to the flame holes.

Alternatively, the upper end of the through hole 2064 communicates with the lower end of the fire transfer chute 805. Thus, a portion of the fuel gas flowing through the through holes 2064 flows upward through the flame transfer slots 805 and out of the flame holding slots, and another portion flows to the adjacent fire holes of the fire cover.

Alternatively, the through holes 2064 are inclined upward in the inside-out direction. The through holes 2064 are upwardly inclined so that the fuel gas has a tendency to flow outwardly, accelerating the flow velocity of the gas stream.

Alternatively, through holes 2064 may be at an angle in the range of 0 to 10 from horizontal. When the angle of the through hole 2064 to the horizontal direction is large, the distance from the flame holding groove located below the through hole 2064 is too far, and it is inconvenient to transfer fire to the fire transfer groove 805. Specifically, the angle of the through hole 2064 with respect to the horizontal direction may be 2 °, 5 °, 8 °, or the like.

Optionally, the upper end of the first protrusion 406 is provided with a second groove-shaped channel 4096, and the second groove-shaped channel 4096 corresponds to and communicates with the first groove-shaped channel 2063 to communicate the flame transmitting hole 2061 and the through hole 2064.

In this embodiment, the second groove-shaped channel 4096 and the first groove-shaped channel 2063 together form a groove-shaped channel, so that the fuel gas at the fire transfer holes 2061 can flow to the through holes 2064, thereby improving the fire transfer performance of the fire transfer grooves 805. The groove-shaped passage is fitted to the collection groove 2062, and the fuel gas of the collection groove 2062 can more easily reach the through hole 2064 through the groove-shaped passage.

When the fire covers are three, the outer fire cover 10 is provided with a first sealing protrusion 105, the middle fire cover 20 is provided with a second sealing protrusion 205, and the first sealing protrusion 105 is arranged on the inner groove wall of the first groove 104 of the outer fire cover. The second sealing protrusion 205 is disposed on the outer wall of the first groove 204 of the middle fire cover, and is integrated with the inner wall of the outer wall 801 of the middle fire cover 20. Optionally, the middle fire cover 20 is provided with a groove-shaped channel and a through hole 2064, and the thickness of the second sealing protrusion 205 is larger than that of the first sealing protrusion 105, so as to realize radial sealing between the fire cover and the gas distribution cover 40 and improve the sealing performance.

The outer side wall 801 of the middle fire cover 20 is provided with a through hole 2064, the through hole 2064 corresponds to the fourth fire hole 102 of the inner side wall 802 of the outer fire cover 10, and the through hole 2064 can transmit flame to the fourth fire hole 102 so as to ignite the four-ring fire.

For example, as shown in fig. 1, when the burner is ignited, the ignition needle at the inner fire cover 30 is ignited, a ring fire is ignited, then a ring fire ignites a ring fire, the ring fire ignites through the corresponding fire transfer holes 2061, a part of the gas in the mixing chamber 2042 in the ring fire flows upwards along the second fire transfer grooves 206, a part of the gas flows upwards along the fire transfer holes 2061, the collecting grooves 2062, the groove-shaped channels and the through holes 2064, and the flame at the through holes 2064 is a main flame, wherein a part of the gas at the through holes 2064 flows upwards out of the second flame stabilizing grooves 2031 of the middle fire cover 20, and the second flame stabilizing grooves 2031 transfer the flame to the third fire holes 203 to form a three-ring fire. Meanwhile, the flame from the through hole 2064 ignites the fourth fire hole 102 of the outer fire cover 10, and then ignites the four-ring fire, and the four-ring fire transfers the flame to the fifth fire hole 103 through the first fire transfer groove 106, and then ignites the five-ring fire.

Optionally, as shown in fig. 8, the gas distributing cover 40 is further provided with a gas outlet grating 407, the gas outlet grating 407 is located in the gas distributing channel and covers the gas outlet, the gas outlet grating 407 is arc-shaped and extends along the circumferential direction of the gas distributing channel, and the gas outlet is matched with the gas outlet channel. The grid 407 of giving vent to anger is used for the unable direct flow of the gas that flows to the gas mixing intracavity that corresponds with the gas outlet, but guides the gas to form the fire lid gas mixing intracavity that reachs after the circumference flows in the gas mixing intracavity that corresponds again for the gas that mixes the gas intracavity flows more evenly, and the air output of the fire hole that the fire lid corresponds is also more even moreover.

Alternatively, as shown in fig. 8 and 9, the circumferential lengths of the corresponding outlet grilles 407 on both sides of the gas outlet are different.

In this embodiment, because the gas distribution channel is annular, the gas needs to be in the gas distribution channel and is the circumference flow, receives the structural influence of combustor, and the power that the gas export flowed in flows to both sides is different, consequently, the circumference of the grid 407 of giving vent to anger of gas export both sides is different, can improve the gas and be the homogeneity that the circumference flows in the gas distribution channel.

Optionally, the air outlet grille 407 is provided with a plurality of grille holes 408, and the plurality of grille holes 408 are sequentially arranged at intervals along the circumferential direction of the air outlet grille 407, so as to provide air outlet uniformity of the air outlet grille 407. Optionally, the plurality of grid holes 408 are uniformly arranged, so that the outlet uniformity of the outlet grid 407 can be further improved.

When the fire cover comprises three fire covers, the number of the ejectors 503 is three, wherein each ejector 503 linearly extends along the radial direction of the gas distribution assembly; the first ejector 5031 and the second ejector 5033 are respectively located at two sides of the third ejector 5035, and a straight line where the third ejector 5035 is located passes through the center of the gas distribution assembly.

In this embodiment, the third ejector 5035 penetrates through the center of the gas distribution assembly, and the first ejector 5031 and the second ejector 5033 are respectively located at two sides of the third ejector 5035, so that the structure of the ejector 503 is compact, and the gas supply to the three fire covers and the five gas mixing cavities is facilitated.

In one embodiment, the gas passage includes an outer ring gas passage, the outer ring gas passage is arc-shaped, the outer ring gas passage is located at one end of the first ejector 5031 and/or the second ejector 5033, the outer ring gas passage is communicated with the first ejector 5031 and/or the second ejector 5033, the third gas distribution passage 405 is communicated with the outer ring gas passage, the third gas distribution passage 405 is annular, and the gas outlet grille 407 is located in the third gas distribution passage 405. The outlet grill 407 includes a first grill section 4073 and a second grill section 4074, one end of the first grill section 4073 extends toward a side of the first ejector 5031 and/or the second ejector 5033 away from the center of the gas distribution assembly, and the other end of the first grill section 4073 is located at a gas outlet corresponding to the first ejector 5031 and/or the second ejector 5033. One end of the second grill section 4074 is connected to the other end of the first grill section 4073, and the other end of the second grill section 4074 extends toward the first eductor 5031 and/or the second eductor 5033 near the center of the gas distribution assembly; wherein the circumferential length of second grid section 4074 is greater than the circumferential length of first grid section 4073.

In this embodiment, the second grill section 4074 is located at one side of the first ejector 5031 and/or the second ejector 5033, so that the second grill section 4074 is far away from the corresponding gas outlet, and the circumferential length of the second grill section 4074 is greater than that of the first grill section, so that the gas flowing out of the gas outlet can flow circumferentially along the circumferential direction of the gas distribution channel by the second grill section 4074.

Optionally, the number of the outlet grills 407 is multiple, the plurality of outlet grills 407 includes a first outlet grill 4071 and a second outlet grill 4072, the first outlet grill 4071 is located in the outer ring outer air distribution channel 4012, and the second outlet grill 4072 is located in the outer ring inner air distribution channel 4013; the first outlet grill 4071 corresponds to the first ejector 5031, and the second outlet grill 4072 corresponds to the second ejector 5033.

In this embodiment, the first gas distribution channel 401 is divided into an inner gas distribution channel and an outer gas distribution channel, and the two gas outlet grilles 407 can guide the gas in the two gas distribution channels to flow circumferentially, so as to improve the gas outlet uniformity of the fire cover.

Illustratively, the first outlet grill 4071 and the second outlet grill 4072 are each provided with a first grill section 4073 and a second grill section 4074 to further improve the uniformity of the outlet air of the first air mixing chamber.

Optionally, the gas passage further includes an intermediate-ring gas passage, the intermediate-ring gas passage is annular, the third ejector 5035 penetrates through the intermediate-ring gas passage, wherein an inlet end of the third ejector 5035 is located outside the intermediate-ring gas passage, an outlet end of the third ejector 5035 is located inside the intermediate-ring gas passage, the intermediate-ring gas passage is located on one side of the first ejector 5031 and/or the second ejector 5033 facing the third ejector 5035, and the intermediate-ring gas passage intersects and is communicated with the first ejector 5031 and/or the second ejector 5033. The center of the second gas distribution channel 402 coincides with the center of the gas distribution assembly, and the second gas distribution channel 402 is communicated with the middle ring gas channel.

In another embodiment, the outlet grill 407 is positioned within the second gas distribution passage 402, the outlet grill 407 includes a third grill section 4077 and a fourth grill section 4078, and the third grill section 4077 is positioned on a side of the first ejector 5031 and/or the second ejector 5033 facing away from the inlet thereof and extends in an arc shape along the circumference of the second gas distribution passage 402; a fourth grill section 4078 is provided on the side of the first ejector 5031 and/or the second ejector 5033 toward the inlet thereof, and extends in an arc shape in the circumferential direction of the second gas distribution passage 402; wherein the third grate segment 4077 has a circumferential length that is greater than a circumferential length of the fourth grate segment 4078.

In this embodiment, the extension of the fourth outlet grill 4076 in the second distribution passage 402 is blocked by the third ejector 5035, and the gas cannot be guided to flow circumferentially in the second distribution passage 402. The third air outlet grid 4075 can extend to the third ejector 5035, and the third air outlet grid 4075 is long in length, so that the gas in the second gas distribution channel 402 can flow circumferentially, and the air outlet uniformity of the fire cover can be further ensured.

Optionally, the number of the outlet grills 407 is multiple, the plurality of outlet grills 407 includes a third outlet grill 4075 and a fourth outlet grill 4076, the third outlet grill 4075 is located in the middle-outer gas diversion passageway 4022, and the fourth outlet grill 4076 is located in the middle-inner gas diversion passageway 4023; two ends of the third outlet grill 4075 are provided with step-shaped structures 4079 to avoid the second ejector 5033 and/or the third ejector 5035.

In this embodiment, the ejector 503 has a certain height, and the stepped structures 4079 at the two ends of the third air outlet grille 4075 can lift the air outlet grille 407 to avoid the second ejector 5033 and/or the third ejector 5035, so as to improve the smoothness of the air flow.

Alternatively, as shown in fig. 9, in the flow direction of the combustion gas in the second branch passage 402, the aperture of the grid holes 408 at the end of the third grid section 4077 is larger than the aperture of the grid holes 408 at the starting end and the middle end of the third grid section 4077, and/or the aperture of the grid holes 408 at the end of the fourth grid section 4078 is larger than the aperture of the grid holes 408 at the starting end and the middle end of the fourth grid section 4078. In this embodiment, because the airflow power at the tail end of the grating section is small and the stepped structure 4079 is provided, the aperture at the tail end of the grating section is increased, and the smoothness of airflow flow can be further improved.

Optionally, the lower end of the gas distributing cover 40 is provided with a partition matching portion 4041, the upper end of the gas distributing base 50 is provided with a partition portion 506 matched with the partition matching portion 4041, and the partition portion 506 is matched with the partition matching portion to divide a gas channel into an inner gas channel and an outer gas channel. Specifically, the inner gas channel is communicated with an inner gas distribution channel corresponding to the gas distribution channel communicated with the gas channel, and the outer gas channel is communicated with an outer gas distribution channel from the gas channel to the corresponding gas distribution channel.

Specifically, the outer ring gas channel is divided into an outer ring gas channel and an outer ring gas channel, the outer ring gas channel is located outside the outer ring gas channel, the outer ring gas channel is communicated with the outer ring gas distribution channel 4012, and the outer ring gas channel is communicated with the inner ring gas distribution channel 4013. The middle ring gas channel is divided into an outer middle ring gas channel and an inner middle ring gas channel, and the outer middle ring gas channel is positioned outside the inner middle ring gas channel. The middle ring outer gas passage is communicated with the middle ring outer gas passage 4022, and the middle ring inner gas passage is communicated with the middle ring inner gas passage 4023.

Alternatively, as shown in fig. 9, the intermediate ring outer fuel gas passage and the intermediate ring inner fuel gas passage are both located between the first ejector 5031 and the second ejector 5033, and the intermediate ring outer fuel gas passage intersects the first ejector 5031 and the intermediate ring inner fuel gas passage intersects the second ejector 5033. The upper wall of the first ejector 5031 and/or the second ejector 5033 is provided with an air outlet, so that the fuel gas in the first ejector 5031 flows into the middle outer gas-distributing passage 4022 through the air outlet, and/or the fuel gas in the second ejector 5033 flows into the middle inner gas-distributing passage 4023 through the air outlet.

In this embodiment, since the middle ring fuel gas passage intersects with the first ejector 5031 and the second ejector 5033, in order to ensure that the fuel gas in the ejector tube can smoothly flow into the second gas distribution passage 402, the upper wall of the first ejector 5031 and/or the second ejector 5033 is provided with a gas outlet, so that the fuel gas can flow into the second gas distribution passage 402 from the ejector 503. Optionally, the aperture of the air outlet hole is the same as the aperture of the grating holes 408 of the grating section where the air outlet hole is located, so as to facilitate uniformity and fluency of air outlet.

Optionally, the expanded section of the first eductor 5031 intersects and communicates with the intermediate outer gas-dividing passage 4022 and/or the expanded section of the second eductor 5033 intersects and communicates with the intermediate inner gas-dividing passage 4023. Wherein the vent holes are disposed in the expanded section of the first ejector 5031 and/or the vent holes are disposed in the expanded section of the second ejector 5033.

Optionally, the upper surface of the gas distribution base 50 defines a gas outlet channel, the lower surface of the gas distribution cover 40 defines a gas outlet matching channel, and when the gas distribution cover 40 is covered above the gas distribution base 50, the gas outlet channel and the gas outlet matching channel jointly enclose to form a gas channel.

Optionally, the air outlet channel is arc-shaped and extends along the circumferential direction of the air distributor 50; wherein, along the flowing direction of the air flow in the air outlet channel, the bottom wall 507 of the air outlet channel at least partially inclines upwards.

In this embodiment, since the air flow in the air outlet channel needs to flow upward into the air distribution channel of the air distribution cover 40, at least a part of the bottom wall 507 of the air outlet channel is inclined upward, so that the smoothness of the air flow can be improved.

Optionally, the number of the air outlet channels is multiple, and the air outlet channels are sequentially sleeved from outside to inside, so that the fire outlet form of the multi-ring fire is realized.

Alternatively, as shown in fig. 10, the circumferential length of the outlet grid 407 is smaller than the circumferential length of the gas outlet, and the bottom wall 507 of the outlet channel is inclined upward from the corresponding position of the end of the outlet grid 407 along the flow direction of the gas in the outlet channel.

In this embodiment, the bottom wall 507 of the air outlet channel corresponding to the end of the air outlet grille 407 is inclined upward, so that the distance from the airflow at the end of the air outlet grille 407 to the fire cover can be reduced, and the smoothness of the gas flow can be further improved.

Optionally, the bottom wall 4081 of the gas distribution channel comprises a second inclined surface 4082 in the flow direction of the gas in the gas distribution channel, and the second inclined surface 4082 is inclined upward in the flow direction of the gas in the gas distribution channel; wherein, the starting end of the second inclined surface 4082 corresponds to the end of the first inclined surface 5071. In this embodiment, after the gas flows out through the first inclined surface 5071, the second inclined surface 4082 corresponding to the first inclined surface 5071 is inclined upward, and the gas flow can be continuously guided to flow into the gas distribution channel, so that the smoothness of the gas flow in the gas distribution channel can be further improved.

Optionally, the bottom wall 4081 of the gas distribution channel includes a first bottom wall section, which is arc-shaped and extends in the circumferential direction of the gas outlet grille 407; the number of the second inclined surfaces 4082 is two, two second inclined surfaces 4082 are respectively connected to two ends of the first bottom wall section, and the gas outlet is arranged between the two second inclined surfaces 4082.

In this embodiment, a gas outlet is defined between the two second inclined planes 4082, that is, two ends of the gas outlet are respectively provided with the two second inclined planes 4082, and the two inclined planes are respectively and correspondingly provided with the two first inclined planes 5071, so that the smoothness of gas flow can be improved, and the circumferential fluidity of the gas can be improved.

The gas distribution plate can divide a gas distribution channel into an inner gas distribution channel and an outer gas distribution channel, and the inner gas distribution channel and the outer gas distribution channel are internally provided with gas outlet grids 407 so as to ensure that gas in the gas distribution channels on the inner side and the outer side of each gas distribution channel can flow along the circumferential direction and ensure the gas supply uniformity of the fire holes at the inner part and the outer part of each fire cover.

In one embodiment, the outlet channels of the first outlet grill 4071 and the second outlet grill 4072 are provided with a first inclined surface 5071, and the first outlet grill 4071 and the second outlet grill 4072 are also provided with a second inclined surface 4082.

In this embodiment, when the third air distributing channel 405 is divided into two air distributing channels, an air outlet grid 407 is disposed in each air distributing channel, so that the smoothness of the flow of the gas in the outer ring can be improved.

Illustratively, the bottom wall 409 of the outer ring outer air distribution passage 4012 and the bottom wall 409 of the outer ring inner air distribution passage 4013 include a second slope 4082. Therefore, the flow resistance of the gas corresponding to the four-ring fire and the five-ring fire is reduced, and the smoothness of the gas flow is improved.

Optionally, the partition portion 506 of the air distributing seat 50 is located in the air outlet channel to partition the air outlet channel into an inner air outlet channel and an outer air outlet channel, the inner air outlet channel is communicated with the inner air distributing channel, and the outer air outlet channel is communicated with the outer air distributing channel.

In this embodiment, the cooperation of each gas outlet channel, each gas distribution channel and the gas outlet grille 407 can ensure the smooth flowing of the gas around each ring fire.

Optionally, the air distribution base 50 defines a lower injection passage, the air distribution cover 40 defines an upper injection passage, and when the air distribution cover 40 is covered above the air distribution base 50, the lower injection passage and the upper injection passage jointly form the injector 503. In this embodiment, the air distributing cover 40 and the air distributing base 50 are both provided with an injection passage, so that when the air distributing cover 40 covers the air distributing base 50, the upper injection passage and the lower injection passage can jointly form the injector 503.

Optionally, the gas distributor 50 further includes a first body 508 and a second body 5081, the first body 508 defines a first lower injection passage 5032, a second lower injection passage 5034 and a third lower injection passage 5036 which are arranged side by side, the first lower injection passage 5032 and the second lower injection passage 5034 are respectively located at two sides of the third lower injection passage 5036, the second body 5081 is located at one side of the first body 508, the second body 5081 defines an outer ring gas outlet passage 501, an outlet of the outer ring gas outlet passage 501 is communicated with an inlet of the outer ring gas mixing cavity, and the outer ring gas outlet passage 501 is arc-shaped and extends along the circumferential direction of the gas distributor 50. Wherein the air outlet channel comprises an outer ring air outlet channel 501. The first body 508 further defines a middle ring outlet channel 502, an outlet of the middle ring outlet channel 502 is communicated with the middle ring gas mixing cavity, the middle ring outlet channel 502 is arc-shaped, and the middle ring outlet channel 502 is located inside the outer ring outlet channel 501.

In this embodiment, the arc-shaped outer ring outlet channel 501 and the arc-shaped middle ring outlet channel 502 can be matched with the annular gas distributing cover 40 and the fire cover, so that the gas can flow more uniformly in the circumferential direction.

The first lower injection passage 5032, the second lower injection passage 5034 and the third lower injection passage 5036 extend along the radial direction of the gas distribution seat 50 and are all linear, so that the flow path of the fuel gas in the injector 503 can be reduced, and the injection effect of the fuel gas can be improved.

Optionally, the gas distributor 50 further includes a first partition 5061, the first partition 5061 is located in the outer ring gas outlet channel 501 to partition the outer ring gas outlet channel 501 into a first gas outlet channel 5011 and a second gas outlet channel 5012, the first gas outlet channel 5011 is located outside the second gas outlet channel 5012, the first gas outlet channel 5011 is communicated between the first lower injection channel 5032 and the first gas mixing cavity, and the second gas outlet channel 5012 is communicated between the second lower injection channel 5034 and the second gas mixing cavity.

In this embodiment, the first partition 5061 separates the outer ring air outlet channel 501 into two inner and outer air outlet channels, and the two air outlet channels can respectively provide gas for the two air mixing cavities of the outer ring air mixing cavity, thereby ensuring the air intake independence, flexibility and reliability of the first air mixing cavity and the second air mixing cavity. And draw the passageway through two down and admit air for two air outlet channel respectively, can improve the compact of combustor structure, increase the flexibility that the firepower of combustor was adjusted moreover.

Optionally, the gas distributor 50 further includes a second partition 5062, the second partition 5062 is located in the middle ring gas outlet channel 502 to partition the middle ring gas outlet channel 502 into a third gas outlet channel 5021 and a fourth gas outlet channel 5022, the third gas outlet channel 5021 is located outside the fourth gas outlet channel 5022, the third gas outlet channel 5021 is communicated between the first lower jet channel 5032 and the third gas mixing cavity, and the fourth gas outlet channel 5022 is communicated between the second lower jet channel 5034 and the fourth gas mixing cavity.

In this embodiment, the second partition 5062 separates the middle ring air outlet channel 502 into two inner and outer air outlet channels, and the two air outlet channels can respectively provide gas for two air mixing chambers of the middle ring air mixing chamber, thereby ensuring the air inlet independence, flexibility and reliability of the first air mixing chamber and the second air mixing chamber. And draw the passageway through two down and admit air for two air outlet channel respectively, can improve the compact of combustor structure, increase the flexibility that the firepower of combustor was adjusted moreover.

Alternatively, when the gas distribution cover 40 is disposed over the gas distribution base 50, the first partition 5061 abuts against the lower surface of the gas distribution cover 40 to prevent the first air outlet passage 5011 and the second air outlet passage 5012 from communicating with each other. Similarly, when the air distribution cover 40 is covered above the air distribution base 50, the second blocking part 5062 contacts with the lower surface of the air distribution cover 40 to prevent the third air outlet channel 5021 and the fourth air outlet channel 5022 from communicating with each other.

Optionally, the gas distribution seat 50 includes a partition plate 504, the partition plate 504 is connected between inlets of two adjacent lower injection passages, the partition plate 504 and the two adjacent lower injection passages together enclose a secondary air flow passage 5041, and the secondary air flow passage 5041 is communicated with both the middle fire cover 20 and the outer fire cover 10.

In this embodiment, the gas velocity of flow of the entrance of drawing the passageway down is very fast, and can draw and penetrate surrounding primary air, can have an influence to the flow of the secondary air around the primary air like this, leads to that the secondary air make-up volume between outer fire lid 10 and the middle fire lid 20 is relatively poor, and the flue gas is higher. Through the setting of baffle 504, can reduce the influence that primary air flows to the secondary air, can guarantee the supply capacity of secondary air, reduce the flue gas.

Optionally, the second body 5081 is arranged around the outer sides of the first lower injection channel 5032 and the second lower injection channel 5034 and extends in an arc shape along the circumferential direction of the gas distributing base 50, and a connecting line of two ends of the second body 5081 intersects with both the first lower injection channel 5032 and the second lower injection channel 5034; the gas distributor 50 includes a rib 505, and the rib 505 is connected between at least one end of the second body 5081 and the inlet of the first lower jet passage 5032 and/or the inlet of the second lower jet passage 5034.

In this embodiment, the second body 5081 is matched with the outer ring air outlet channel 501, which can be understood as follows: the second body 5081 has the same or similar shape, size, etc. as the outer ring outlet channel 501. This can reduce the manufacturing cost of the gas distributor 50 and reduce the weight of the burner. The setting of strengthening rib 505 can fix the both ends of second body 5081, increases the holistic structural strength of gas distribution seat 50 to guarantee the stable use of combustor.

When the number of the fire covers is three, the lower end surface of the gas distribution seat 50 respectively defines a first upper injection passage 4093, a second upper injection passage 4094 and a third upper injection passage 4095, wherein the first upper injection passage 4093 and the first lower injection passage 5032 jointly enclose to form a first injector 5031; the second upper injection passage 4094 and the second lower injection passage 5034 jointly enclose to form a second injector 5033; the third upper injection passage 4095 and the third lower injection passage 5036 together enclose to form a third injector 5035.

Optionally, the inner fire cover 30 is further provided with an upper flame holding groove and a lower flame holding groove, the upper flame holding groove is located above the first fire hole 301, and the lower flame holding groove is located above the first fire hole 301. Go up the crisscross setting of flame holding groove and lower flame holding groove, and go up flame holding groove and flame holding groove down and can partially coincide in the projection of direction of height to form the circumference, so that go up flame holding groove and flame holding groove down give vent to anger and can cover the first fire hole 301 of whole circumference, prevent that flame from leaving the flame.

Optionally, the upper flame holding groove is at a distance ranging from 1mm to 2mm from the first fire hole 301. The distance between the lower flame stabilizing groove and the first fire hole 301 is 1mm-2mm.

The embodiment of the disclosure also provides a gas stove, which comprises the burner of any one of the above parts.

The gas stove provided by the embodiment of the disclosure has the beneficial effects of any one of the burners due to the burner comprising any one of the burners, and is not repeated herein.

The above description and drawings sufficiently illustrate embodiments of the disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The examples merely typify possible variations. Individual components and functions are optional unless explicitly required, and the sequence of operations may vary. Portions and features of some embodiments may be included in or substituted for those of others. The embodiments of the present disclosure are not limited to the structures that have been described above and illustrated in the drawings, and various modifications and changes can be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A burner, comprising:

the gas distribution assembly comprises a gas distribution cover and a gas distribution seat, the gas distribution cover is positioned above the gas distribution seat, the gas distribution cover and the gas distribution seat jointly enclose an injection pipe and a gas channel, and an outlet of the injection pipe is communicated with the gas channel;

the base is positioned below the gas distribution seat, a gas introducing channel is limited by the base, and an outlet of the gas introducing channel corresponds to an inlet of the injection pipe so as to provide fuel gas for the injection pipe;

the inner wall surface of the gas distribution cover is provided with a limiting part, the outer wall surface of the base is provided with a limiting matching part matched with the limiting part, and when the limiting part is matched with the limiting matching part, the gas distribution cover and the base limit rotation.

2. The burner of claim 1, wherein the gas distribution cap comprises:

the gas distribution cover body is covered above the gas distribution seat;

the skirt is arranged on the outer side of the gas distribution cover body, extends along the circumferential direction of the gas distribution cover body, and at least partially inclines downwards along the direction from inside to outside;

the base includes:

a base body;

the air outlet part is positioned above the base body and positioned on one side of the inlet of the injection pipe, and a nozzle of the burner is arranged on the air outlet part;

the skirt extends downwards and is sleeved on the outer side of the base, the limiting portion is arranged on the inner wall surface of the skirt, and the limiting matching portion is arranged on the outer wall surface of the air outlet portion.

3. The burner of claim 2,

the spacing portion includes:

the first limiting bulge is convexly arranged on the inner wall surface of the skirt;

spacing cooperation portion includes:

a side elevation located at least one end of the outer wall surface of the air outlet part along the circumferential direction thereof;

when the limiting part is matched with the limiting matching part, the first limiting bulges are sequentially arranged along the circumferential direction of the air outlet part along the side vertical face, and the first limiting bulges are attached to the side vertical face.

4. The burner of claim 3,

the spacing portion still includes:

the second limiting bulge is convexly arranged on the inner wall surface of the skirt and is sequentially arranged with the first limiting bulge at intervals along the circumferential direction of the skirt, and the length of the second limiting bulge is smaller than that of the first limiting bulge;

when the limiting part is matched with the limiting matching part, the second limiting protrusion is located above the air outlet part and is abutted against the upper wall face of the air outlet part, and the limiting matching part comprises the upper wall face of the air outlet part.

5. The burner of claim 3,

the spacing portion still includes:

a first arc-shaped surface located on the inner wall surface of the skirt;

spacing cooperation portion still includes:

the second arc-shaped surface is positioned on the outer wall surface of the air outlet part facing the air distribution cover;

when the limiting part is matched with the limiting matching part, the first arc-shaped surface is attached to the second arc-shaped surface.

6. The burner of claim 2,

the upper surface of base body is equipped with the holding surface, the lower surface of dividing the gas seat is equipped with the support column, divide the gas subassembly to locate when the base top, the holding surface with support column looks butt is in order to realize divide the gas subassembly with the location cooperation of base.

7. The burner of claim 2,

the gas distribution seat is provided with a limiting hole penetrating along the thickness direction of the gas distribution seat, the upper surface of the base body is provided with a limiting column, and the limiting column is located in the limiting hole when the gas distribution assembly is arranged above the base.

8. The burner of claim 2,

the peripheral wall of the gas distribution cover body is provided with a first screw hole, the peripheral wall of the gas distribution seat is provided with a second screw hole, the first screw hole corresponds to the second screw hole, and a first fastening piece penetrates through the first screw hole and the second screw hole to connect the gas distribution cover and the gas distribution seat;

wherein, the upper end of skirt is located the top of first screw hole, the lower extreme of skirt extends to the outside of first screw hole, perhaps, the lower extreme of skirt extends to the outside of second screw hole.

9. The burner according to any one of claims 2 to 8, further comprising:

the liquid bearing disc is positioned between the gas distribution seat and the base, and the gas outlet part penetrates through the liquid bearing disc and corresponds to the injection pipe; the liquid bearing disc is provided with a first connecting hole, the base is provided with a second connecting hole, and a second fastener penetrates through the first connecting hole and the second connecting hole to realize the connection of the liquid bearing disc and the base;

the blocking cap is matched with the first connecting hole, and the liquid bearing disc and the base are separated, the blocking cap can be covered and arranged above the first connecting hole.

10. A gas burner comprising a burner as claimed in any one of claims 1 to 9.