Ignition needle assembly and combustor

Abstract

The ignition needle assembly comprises an ignition needle, a fixing disc, a supporting piece, a fixing frame and an elastic piece, a first step part and a second step part which are oppositely arranged in a spaced mode are arranged outside the ignition needle, and the first step part and the second step part are arranged in a spaced mode; the fixing disc is used for being arranged on the furnace end in a sleeving mode, a first open hole is formed in the fixing disc, and the ignition needle is inserted into the first open hole. The supporting piece is arranged on the fixing disc and used for abutting against the first step part. The fixing frame is arranged on the fixing disc, and when the supporting piece abuts against the first step part, the fixing frame and the second step part are spaced to form a limiting space; the elastic piece is inserted into the limiting space, and the two sides of the elastic piece abut against the fixing frame and the second step part respectively. A stepped hole matched with the ignition needle structure does not need to be machined in the furnace end, the machining process is simple, cost is low, and installation is convenient and fast. Meanwhile, the ignition needles of various specifications can be fixed through cooperation of the fixing disc, the supporting piece, the fixing frame and the elastic piece in the scheme, and compatibility is high.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of gas stoves, and particularly relates to an ignition needle assembly and a burner. BACKGROUND

[0002] With the development of the technical field of household appliances, the burner provided with the ignition needle is favored by people due to the characteristics of being used as needed and is widely applied to people's life.

[0003] In the traditional scheme, the ignition needle usually needs to be machined with a stepped hole matched with the ignition needle on the die-casting burner head to support and limit the ignition needle, so as to cause a complex machining process and high cost. CONTENT OF THE UTILITY MODEL

[0004] The application provides an ignition needle assembly and a burner, and solves the technical problem of a complex machining process and high cost of the ignition needle assembly.

[0005] To solve the above technical problem, one technical scheme of the application is as follows: an ignition needle assembly, comprising an ignition needle, a fixing disc, a support, a fixing frame and an elastic piece, the ignition needle is externally provided with a first stepped portion and a second stepped portion which are oppositely spaced, and the first stepped portion and the second stepped portion are spaced; the fixing disc is used for sleeving the burner head, the fixing disc is provided with a first opening hole, and the ignition needle is inserted into the first opening hole; the support is arranged on the fixing disc, and the support is used for abutting against the first stepped portion; the fixing frame is arranged on the fixing disc, and when the support abuts against the first stepped portion, the fixing frame and the second stepped portion form a limiting space; the elastic piece is inserted into the limiting space, and the two sides of the elastic piece abut against the fixing frame and the second stepped portion respectively.

[0006] According to an embodiment of the application, the support is arranged at the edge of the first opening hole and extends away from the fixing disc, one end of the support away from the first opening hole is bent to form an abutting edge in the direction of the axis of the first opening hole, and the abutting edge is used for abutting against the first stepped portion.

[0007] According to an embodiment of the application, the support is formed by bending at least part of the material of the fixing disc at the first opening hole.

[0008] According to an embodiment of the present application, the fixed disc has a first side and a second side arranged oppositely, the ignition needle is moved from the first side to the second side to be inserted into the first opening; the fixed frame comprises a fixed arm and a fixed plate, the fixed arm is arranged at the second side of the fixed disc; the fixed plate is connected to the fixed arm, the fixed plate is provided with a second opening through which the ignition needle passes, and the second step portion is spaced from the fixed plate to form the limiting space after passing through the second opening.

[0009] According to an embodiment of the present application, the elastic member comprises a first elastic sheet and a second elastic sheet, the first elastic sheet is provided with an opening through which the ignition needle can be radially sleeved on the outer periphery of the ignition needle, and the first elastic sheet abuts against the fixed plate; the second elastic sheet is provided with an opening through which the ignition needle can be radially sleeved on the outer periphery of the ignition needle, and the openings of the first elastic sheet and the second elastic sheet are connected, and the second elastic sheet abuts against the second step portion; when the first elastic sheet and the second elastic sheet are relatively close under pressure, the first elastic sheet and the second elastic sheet have a rebound force of being relatively separated.

[0010] According to an embodiment of the present application, the fixed plate is further provided with a limiting hole communicating with the second opening, the limiting hole is located on the side of the second opening away from the axis of the fixed disc, at least one side of the first elastic sheet away from the second elastic sheet is provided with a limiting protrusion, and the limiting protrusion is located in the limiting hole when the elastic member is inserted into the limiting space.

[0011] According to an embodiment of the present application, the area of the fixed plate forming the second opening is recessed to form a clamping groove towards the fixed disc, the clamping groove extends radially along the ignition needle, and the two side groove walls of the clamping groove limit the elastic member.

[0012] According to an embodiment of the present application, the insulating shell of the ignition needle is provided with an annular protrusion, the insulating shell is further provided with an annular groove spaced from the annular protrusion, the first step portion is formed on the side of the annular protrusion facing the annular groove, the second step portion is formed on the side of the annular groove facing the annular protrusion, and the outer diameter of the second step portion is smaller than the outer diameter of the first step portion.

[0013] To solve the above technical problems, the present application further provides a technical solution: providing a burner, the burner comprising a burner head and the ignition needle assembly of any of the above.

[0014] According to an embodiment of the present application, the outer peripheral wall of the burner head is formed with a positioning boss, the fixed disc is provided with a fixed hole, the fixed disc is sleeved on the outer periphery of the burner head through the fixed hole, the fixed disc has a positioning flange at the position of the fixed hole, and the positioning flange abuts against the positioning boss.

[0015] The beneficial effects of the present application are: in the present application, there is no need to process a stepped hole matching the structure of the ignition needle in the furnace head, the processing technology is simple, the cost is low, and the installation is convenient. Moreover, the fixing disc, the supporting piece, the fixing frame and the elastic piece in the present application scheme can fix ignition needles of various specifications, and the compatibility is strong. Therefore, the ignition needle assembly in the present application has the advantages of simple processing technology, high compatibility, convenient and reliable installation. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiment description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0017] Figure 1 is a perspective view of an embodiment of the ignition needle assembly of the present application;

[0018] Figure 2 is a sectional view along the section line A-A in the present application; Figure 1

[0019] Figure 3 is a schematic view of the III part enlarged in the present application; Figure 2

[0020] Figure 4 is an exploded view of the ignition needle assembly of the present application;

[0021] Figure 5 is a perspective view of an embodiment of the burner of the present application. DETAILED DESCRIPTION

[0022] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application will be described in detail below with reference to the drawings. It can be understood that the specific embodiments described here are only used to explain the present application, but not to limit the present application. In addition, it should be noted that, in order to facilitate the description, only the parts related to the present application are shown in the drawings, but not all the structures. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0023] ​​Reference to“an embodiment” herein means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase“in one embodiment” in various places in the specification are not necessarily referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. As will be apparent to those of ordinary skill in the art, embodiments described herein can be combined with other embodiments.

[0024] In the description of the application, the terms“first”,“second”, etc. are used only for descriptive purposes and are not to be construed as indicating or implying relative importance or an indicated number of technical features. Thus, features defined with“first”,“second” can explicitly or implicitly include one or more features. In the description of the application, the meaning of“a plurality” is two or more, unless otherwise explicitly and specifically limited.

[0025] Please refer to Figure 1 , Figure 2 and Figure 3 , and in conjunction with Section III of Figure 2 , an embodiment of the application provides a spark needle assembly 100, comprising a spark needle 10 and a fixing disc 20. Wherein, the fixing disc 20 is used for fixedly connecting with the burner head 201 in the burner 200, and the spark needle 10 is fixed on one side of the burner head 201 through the fixing disc 20, so as to realize the ignition of the gas released by the burner head 201.

[0026] Specifically, one end of the spark needle 10 is designed with a sharp discharge end, which can generate a high-voltage arc when the power is turned on, and the mixture of gas and air released by the gas outlet of the burner head 201 is ignited instantaneously, realizing fast and reliable ignition. The fixing disc 20 provides stable support for the spark needle 10, ensuring that the spark needle 10 will not be displaced due to vibration or external force during long-term use, thereby ensuring the precise alignment between the spark needle 10 and the gas outlet of the burner head 201.

[0027] In use, the spark needle assembly 100 is connected through the power supply, and when the ignition switch is operated, the current passes through the spark needle 10 to generate an arc, which instantaneously ignites the gas released from the burner head 201, thereby starting the combustion process.

[0028] Please continue to refer to Figure 1 , Figure 2 and Figure 3In an embodiment, the igniter needle assembly 100 further comprises a support 30, a fixing frame 40 and an elastic member 50. The igniter needle 10 is externally provided with a first step portion 11 and a second step portion 12 which are oppositely spaced. The first step portion 11 and the second step portion 12 are spaced. The fixing disc 20 is used to be sleeved on the burner head 201. The fixing disc 20 is provided with a first opening 21. The igniter needle 10 is inserted into the first opening 21. The support 30 is arranged on the fixing disc 20. The support 30 is used to abut against the first step portion 11. The fixing frame 40 is arranged on the fixing disc 20. When the support 30 abuts against the first step portion 11, the fixing frame 40 is spaced from the second step portion 12 to form a limiting space 41. The elastic member 50 is inserted into the limiting space 41. The two sides of the elastic member 50 abut against the fixing frame 40 and the second step portion 12 respectively.

[0029] By abutting the support 30 against the first step portion 11, the igniter needle 10 can be preliminarily positioned. Then, by inserting the elastic member 50 into the limiting space 41 between the fixing frame 40 and the second step portion 12, the elastic member 50 and the fixing frame 40 cooperate to limit the second step portion 12. The oppositely arranged first step portion 11 and second step portion 12 are both limited. The igniter needle 10 is stably inserted into the fixing disc 20.

[0030] In the present application, the burner head 201 does not need to be processed to have a stepped hole matching the structure of the igniter needle 10. The processing technology is simple, the cost is low, and the installation is convenient. Moreover, the fixing disc 20, the support 30, the fixing frame 40 and the elastic member 50 in the present application can cooperate to fix igniter needles 10 of various specifications, and have strong compatibility. Therefore, the igniter needle assembly 100 in the present application has the advantages of simple processing technology, high compatibility, convenient and reliable installation.

[0031] The fixing disc 20 has oppositely arranged first and second sides 22 and 23. The igniter needle 10 moves from the first side 22 to the second side 23 to be inserted into the first opening 21.

[0032] Specifically, the discharge end of the igniter needle 10 is upward. The first step portion 11 is usually located at the upper or middle part of the igniter needle 10, and has a diameter or width slightly larger than that of the main body of the igniter needle 10, thereby forming an obvious stepped structure. The main function of the first step portion 11 is to serve as a reference for supporting and positioning the igniter needle 10. When the igniter needle 10 moves from the first side 22 of the fixing disc 20 to the second side 23 of the fixing disc 20 to be inserted into the first opening 21, the first step portion 11 will contact the support 30 on the fixing disc 20, thereby ensuring the stability of the igniter needle 10 in the axial direction and limiting its downward movement. In combination with the accompanying drawings, Figure 1It can be seen that moving the ignition needle 10 from the first side 22 of the fixed disc 20 to the second side 23 of the fixed disc 20 defines inserting the ignition needle 10 into the fixed disc 20 from top to bottom, at this time the support 30, the fixed frame 40 and the elastic member 50 are all arranged below the fixed disc 20.

[0033] The second step portion 12 is located below the first step portion 11 and forms a certain interval with the first step portion 11. It can be understood that the second step portion 12 can be a protrusion slightly larger in diameter or width than the main body portion of the ignition needle 10, or can be a groove recessed in the radial direction relative to the main body portion of the ignition needle 10. Both ways can form the second step portion 12, which is not limited here. When the ignition needle 10 is inserted into the fixed disc 20, the second step portion 12 will form a certain gap with the fixed frame 40 on the fixed disc 20, and the elastic member 50 is inserted into the gap, so that the two sides of the elastic member 50 are respectively abutted against the fixed frame 40 and the second step portion 12. The elastic member 50 and the fixed frame 40 cooperate to limit the second step portion 12, which can limit the upward movement of the ignition needle 10.

[0034] In the actual installation process, when the ignition needle 10 is inserted into the fixed disc 20 from top to bottom, the ignition needle 10 will first pass through the first opening 21 and continue to move downward until the first step portion 11 will contact the support 30 to provide preliminary support for the ignition needle 10. Then, the second step portion 12 will form a gap with the fixed frame 40, and the elastic member 50 is inserted into the gap to complete the final fixation of the ignition needle 10. By limiting the downward movement of the ignition needle 10 by the support 30, and by limiting the upward movement of the ignition needle 10 by the cooperation of the elastic member 50 and the fixed frame 40, the ignition needle 10 obtains stable support.

[0035] In another embodiment, the second step portion 12 can also be located at the position of the ignition needle 10 close to the discharge end of the ignition needle 10 relative to the first step portion 11, that is, in the figure, the second step portion 12 is located above, and the first step portion 11 is located below. At this time, the fixed frame 40 is located above the support 30, and the ignition needle 10 is arranged on the fixed disc 20. The support 30 can be arranged above the fixed disc 20 to realize the movement of the ignition needle 10 from the second side 23 of the fixed disc 20 to the first side 22 of the fixed disc 20, that is, to realize the insertion of the ignition needle 10 into the fixed disc 20 from bottom to top.

[0036] Please refer to Figure 3 In an embodiment, the insulating shell of the ignition needle 10 is provided with an annular protrusion 13, and the insulating shell is further provided with an annular groove 14 arranged in a spaced manner with the annular protrusion 13. The side of the annular protrusion 13 facing the annular groove 14 forms the first step portion 11, and the side of the annular groove 14 facing the annular protrusion 13 forms the second step portion 12. The outer diameter of the second step portion 12 is smaller than the outer diameter of the first step portion 11.

[0037] Specifically, the first step portion 11 formed on one side of the annular protrusion 13 towards the annular groove 14 provides a stable support surface to cooperate with the support piece 30, achieving a more secure fixing effect. The second step portion 12 formed on one side of the annular groove 14 towards the annular protrusion 13 has an outer diameter smaller than that of the first step portion 11. Since the ignition needle 10 moves from the first side 22 to the second side 23, in order to avoid interference between the second step portion 12 and the support piece 30, the outer diameter of the second step portion 12 is smaller than that of the first step portion 11. Therefore, when the ignition needle 10 is installed, the second step portion 12 can pass through the support piece 30, and the first step portion 11 can abut against the support piece 30. The existence of the first step portion 11 and the second step portion 12 ensures that the ignition needle 10 can be accurately installed to a predetermined position. When the ignition needle 10 is inserted, the first step portion 11 will first contact the support piece 30 and stop advancing, while the second step portion 12 will stop at the correct position after passing through the second opening 431 on the fixed plate 43, effectively preventing the ignition needle 10 from being inserted too far, and avoiding the malfunction or damage of the ignition needle 10 due to improper depth.

[0038] Please refer to Figure 1 , Figure 3 and Figure 4 In an embodiment, the support piece 30 is arranged at the edge of the first opening 21 and extends away from the fixed disc 20. The end of the support piece 30 away from the first opening 21 is bent towards the axis of the first opening 21 to form an abutting edge 31, which is used to abut against the first step portion 11. Through the above arrangement, the abutting edge 31 arranged in an extending manner enables the support piece 30 to provide sufficient support area for the ignition needle 10, thereby effectively bearing the weight of the ignition needle 10 and reducing the risk of the ignition needle 10 shaking or tilting during installation or use. At the same time, the curved form can enhance the elastic recovery ability of the support piece 30, so that it can produce a certain deformation when subjected to external force, thereby better adapting to the thermal expansion and contraction and possible slight displacement of the ignition needle 10.

[0039] Please refer to Figure 3 and Figure 4 In an embodiment, the abutting edge 31 abutting against the first step portion 11 has an abutting surface 311 which closely fits the side surface of the first step portion 11, thereby further improving the stability of the ignition needle 10 when fixed to the fixed disc 20 and reducing the risk of displacement or falling of the ignition needle 10 during installation.

[0040] In the present embodiment, the abutting surface 311 is an arc surface.

[0041] In an embodiment, the support 30 is formed by bending at least part of the material of the fixing disc 20 at the first opening 21. That is, the support 30 and the fixing disc 20 can be an integral structure, which reduces the number of parts and assembly steps, thus simplifying the manufacturing process, reducing production costs, and also improving the integrity and reliability of the fixing disc 20 and the support 30.

[0042] In another embodiment, the support 30 can also be a separate structure from the fixing disc 20, which is not limited here.

[0043] Please continue to refer to Figure 3 and Figure 4 In an embodiment, the fixing disc 20 has a first side 22 and a second side 23 arranged opposite to each other, and the ignition needle 10 moves from the first side 22 to the second side 23 to be inserted into the first opening 21. The fixing frame 40 includes a fixing arm 42 and a fixing plate 43, the fixing arm 42 is arranged on the second side 23 of the fixing disc 20. The fixing plate 43 is connected to the fixing arm 42, and the fixing plate 43 is provided with a second opening 431 for the ignition needle 10 to pass through, and the second step portion 12 is spaced from the fixing plate 43 to form a limiting space 41 after passing through the second opening 431.

[0044] Specifically, the ignition needle 10 moves from the first side 22 to the second side 23 of the fixing disc 20 until it is completely inserted into the first opening 21. During this process, the first step portion 11 on the ignition needle 10 will be in contact with and stably supported by the support 30, ensuring that the ignition needle 10 is installed in the correct position. When the ignition needle 10 continues to move to the second side 23, the second step portion 12 will pass through the second opening 431 on the fixing plate 43. At this time, due to the presence of the fixing plate 43, the second step portion 12 will not be in close contact with the fixing plate 43 but will be spaced a certain distance therefrom, thereby forming a limiting space 41. The limiting space 41 is used to accommodate the elastic member 50, so that the elastic member 50 can freely stretch and contract in the limiting space 41, providing cushioning and support for the ignition needle 10. At the same time, the fixing plate 43 can also serve as an additional support to help maintain the stability and accuracy of the ignition needle 10 during use.

[0045] Specifically, the fixing frame 40 is welded or riveted to the fixing disc 20.

[0046] Please continue to refer to Figure 3 and Figure 4In an embodiment, the elastic member 50 comprises a first elastic sheet 51 and a second elastic sheet 52. The first elastic sheet 51 is provided with an opening through which the ignition needle 10 can be radially sleeved on the outer periphery of the ignition needle 10, and the first elastic sheet 51 abuts against the fixed plate 43. The second elastic sheet 52 is provided with an opening through which the ignition needle 10 can be radially sleeved on the outer periphery of the ignition needle 10, and the openings of the first elastic sheet 51 and the second elastic sheet 52 are connected. The second elastic sheet 52 abuts against the second stepped portion 12. When the first elastic sheet 51 and the second elastic sheet 52 are relatively close under pressure, the first elastic sheet 51 and the second elastic sheet 52 have a relatively separate elastic force.

[0047] Specifically, the opening of the first elastic sheet 51 is generally designed to match the shape and size of the ignition needle 10, so as to ensure that the ignition needle 10 can smoothly and stably pass through the opening on the first elastic sheet 51. It can be understood that the shape of the opening can be circular, oval or other designs suitable for the shape of the ignition needle 10. When the first elastic sheet 51 and the second elastic sheet 52 are subjected to a relatively separate elastic force, the first elastic sheet 51 abuts against the fixed plate 43, and the second elastic sheet 52 abuts against the second stepped portion 12, thereby further improving the stability of the ignition needle 10.

[0048] In actual use, when the ignition needle 10 experiences thermal expansion and contraction or slight movement, the elastic force of the first elastic sheet 51 and the second elastic sheet 52 can effectively absorb these stresses, thereby protecting the ignition needle 10 from damage.

[0049] Please continue to refer to Figure 3 and Figure 4 In an embodiment, the fixed plate 43 is further provided with a limiting hole 432 communicating with the second opening 431. The limiting hole 432 is located on the side of the second opening 431 away from the axis of the fixed disc 20. At least one side of the first elastic sheet 51 away from the second elastic sheet 52 is provided with a limiting protrusion 53. When the elastic member 50 is inserted into the limiting space 41, the limiting protrusion 53 is located in the limiting hole 432. Through the above arrangement, the limiting hole 432 can provide an additional fixed point for the elastic member 50, so as to enhance the stability of the ignition needle 10 on the fixed plate 43. When the ignition needle 10 is subjected to external force, the limiting protrusion 53 can abut against the hole wall of the limiting hole 432, thereby reducing the risk of movement or falling of the elastic sheet, and further ensuring the stability of the ignition needle 10, and ensuring the accuracy and reliability of the ignition of the ignition needle 10.

[0050] In an embodiment, the cross section of the limiting protrusion 53 can be semicircular, rectangular or other irregular shapes, which are not limited here.

[0051] In an embodiment, the second elastic sheet 52 is also provided with a limiting protrusion 53 away from the first elastic sheet 51. It can be understood that the elastic member 50 actually comprises two elastic sheets (i.e. the first elastic sheet 51 and the second elastic sheet 52) which are identical in structure. When the ignition needle 10 is inserted into the fixed plate 43, the operator can hold any one of the elastic sheets against the fixed plate 43 and the other one against the second step portion 12, thereby improving the convenience and efficiency of the installation process.

[0052] Please continue to refer to Figure 3 and Figure 4 In an embodiment, at least the first elastic sheet 51 is provided with a baffle 54 extending away from the second elastic sheet 52 away from the opening end. When the elastic member 50 is inserted into the limiting space 41, the baffle 54 is located on the side of the fixed plate 43 away from the ignition needle 10. By providing the baffle 54, the risk of the ignition needle 10 falling off the fixed plate 43 can be reduced. Even if the ignition needle 10 is subjected to a larger external force, the baffle 54 can provide additional resistance to prevent the ignition needle 10 from sliding out of the limiting hole 432.

[0053] Please continue to refer to Figure 3 and Figure 4 In an embodiment, the area of the fixed plate 43 forming the second opening 431 is recessed to form a clamping groove 433 towards the fixed disc 20. The clamping groove 433 extends radially along the ignition needle 10, and the groove walls on both sides of the clamping groove 433 limit the elastic member 50. By providing the clamping groove 433 on the fixed plate 43, a limiting space 41 can be provided for the elastic member 50, limiting the movement range of the elastic member 50 after being inserted into the second opening 431. When the elastic member 50 is inserted into the second opening 431 and enters the clamping groove 433, its two sides will be tightly clamped by the groove walls, thereby reducing the risk of the elastic member 50 falling off or deviating due to vibration or external force during the ignition process.

[0054] Please refer to Figure 5 , Figure 3 and Figure 4 The present application also provides a technical solution: providing a burner 200, the burner 200 comprising a burner head 201 and any of the above-mentioned ignition needle assemblies 100.

[0055] After the ignition needle assembly is positioned on the burner head 201, the electric spark can accurately hit the gas released by the burner head 201, thereby achieving fast and reliable ignition.

[0056] Please continue to refer to Figure 5 , Figure 3 and Figure 4In an embodiment, the outer peripheral wall of the furnace head 201 is formed with a positioning boss 202, the fixing disc 20 is provided with a fixing hole 24, and the fixing disc 20 is sleeved on the outer periphery of the furnace head 201 through the fixing hole 24. The fixing disc 20 is provided with a positioning flange 25 at the position of the fixing hole 24, and the positioning flange 25 abuts against the positioning boss 202. Through the above arrangement, the positioning boss 202 provides a clear mounting position for the fixing disc 20, and also limits the movement range of the fixing disc 20 on the furnace head 201 through its shape and size, thereby ensuring the stable connection between the two. The cooperation of the positioning boss 202 and the positioning flange 25 reduces the risk of misalignment between the furnace head 201 and the fixing disc 20.

[0057] Please continue to refer to Figure 5 、 ​ and ​ In an embodiment, the end of the positioning flange 25 close to the positioning boss 202 is provided with a chamfered surface 251, so as to cooperate with the positioning boss 202, thereby avoiding the round corner or other irregular surface on the positioning boss 202, avoiding mutual interference between the two, and improving the cooperation precision between the positioning boss 202 and the positioning flange 25.

[0058] It should be noted that the terms "horizontal", "vertical" and the like do not mean that the components must be absolutely horizontal or vertical, but can be slightly inclined; the terms "parallel", "perpendicular" and the like also do not mean that the fittings must be absolutely parallel or perpendicular, but can form a certain angular deviation. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined. In addition, the directions or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like are based on the directions or positional relationships shown in the drawings, or the directions or positional relationships in which the products of the present application are usually placed during use, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0059] It can be understood that the meaning of "multiple" herein is at least two, such as two, three, etc., unless specifically limited. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion. The term "and / or", only describes the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B, which can represent the three cases of A alone, A and B together, and B alone. In addition, the character " / " herein generally represents an "or" relationship between the front and rear associated objects.

[0060] The above merely provides the implementation of the present application, and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation based on the content of the present application specification and drawings, or direct or indirect application in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. An igniter needle assembly characterized by, The application relates to a burner, comprising: a firing needle, an outer portion of the firing needle being provided with a first step portion and a second step portion which are arranged at a relative interval; a fixing disc, the fixing disc being arranged on a furnace head, the fixing disc being provided with a first opening, the firing needle being arranged in the first opening; a supporting piece, the supporting piece being arranged on the fixing disc, the supporting piece being arranged to abut against the first step portion; a fixing frame, the fixing frame being arranged on the fixing disc, when the supporting piece abuts against the first step portion, the fixing frame and the second step portion are arranged to form a limiting space at an interval; an elastic piece, the elastic piece being arranged in the limiting space, two sides of the elastic piece being arranged to abut against the fixing frame and the second step portion respectively.

2. The igniter needle assembly of claim 1, wherein The supporting piece is arranged on the edge of the first opening and extends away from the fixing disc, one end of the supporting piece away from the first opening is bent to form an abutting edge in the direction of the axis of the first opening, the abutting edge is arranged to abut against the first step portion.

3. The igniter needle assembly of claim 2, wherein The supporting piece is formed by bending at least part of the material of the fixing disc at the first opening.

4. The igniter needle assembly of claim 1, wherein The fixing disc is provided with a first side and a second side which are arranged at a relative interval, the firing needle is arranged to move from the first side to the second side to be arranged in the first opening; the fixing frame comprises: a fixing arm, the fixing arm being arranged on the second side of the fixing disc; a fixing plate, the fixing plate being connected to the fixing arm, the fixing plate being provided with a second opening, the firing needle is arranged to pass through the second opening, the second step portion is arranged to pass through the second opening to form the limiting space at an interval with the fixing plate.

5. The igniter needle assembly of claim 4, wherein The elastic piece comprises: a first elastic piece, the first elastic piece being provided with an opening, the opening being arranged to be radially arranged on the outer periphery of the firing needle, the first elastic piece is arranged to abut against the fixing plate; a second elastic piece, the second elastic piece being provided with an opening, the opening being arranged to be radially arranged on the outer periphery of the firing needle, the opening sides of the first elastic piece and the second elastic piece are connected, the second elastic piece is arranged to abut against the second step portion; when the first elastic piece and the second elastic piece are pressed to be relatively close, the first elastic piece and the second elastic piece have a relative separation springback force.

6. The igniter needle assembly of claim 5, wherein The fixing plate is further provided with a limiting hole which is communicated with the second opening, the limiting hole is arranged on the side of the second opening away from the axis of the fixing disc, at least one side of the first elastic piece away from the second elastic piece is provided with a limiting protrusion, when the elastic piece is arranged in the limiting space, the limiting protrusion is arranged in the limiting hole.

7. The igniter needle assembly of claim 5 wherein, The fixing plate is recessed to form a clamping groove on the region of the second opening towards the fixing disc, the clamping groove extends in the radial direction of the firing needle, the two side groove walls of the clamping groove limit the elastic piece.

8. The igniter needle assembly of claim 1, wherein The insulating shell of the firing needle is provided with an annular protrusion, the insulating shell is further provided with an annular groove which is arranged at an interval with the annular protrusion, one side of the annular protrusion towards the annular groove forms the first step portion, one side of the annular groove towards the annular protrusion forms the second step portion, the outer diameter of the second step portion is smaller than the outer diameter of the first step portion.

9. A burner characterized by, The burner comprises a furnace head and the firing needle assembly in any one of the above claims 1-8.

10. The burner of claim 9, wherein The outer peripheral wall of the burner head is formed with a positioning boss, the fixing disc is provided with a fixing hole, the fixing disc is sleeved on the outer periphery of the burner head through the fixing hole, and the fixing disc is provided with a positioning flange at the position of the fixing hole, and the positioning flange abuts against the positioning boss.

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