Ignition needle and furnace end

Abstract

The utility model provides an ignition needle and a furnace end, the ignition needle comprises a pair of conductive pieces, and two ends of each conductive piece are respectively a power connection end and an ignition end; the conductive parts are bent at a certain angle, and a gap capable of generating electric sparks is formed between the ignition ends of the pair of conductive parts; the periphery of the conductive part is wrapped with an insulating layer, the insulating layer extends from the position close to the power connection end to the position close to the ignition end, and the insulating layer extends to the bent front portion of the conductive part, so that the distance between the exposed portion of the conductive part and the fixing screw and the distance between the exposed portion of the conductive part and the furnace end shell are increased, advanced discharging is avoided, and it is guaranteed that the furnace end can conduct ignition stably; the service life is prolonged.

Description

Technical Field

[0001] The utility model relates to the field of burner head ignition needles, in particular to an ignition needle and a burner head. Background Art

[0002] The furnace head is a crucial component of the open-hearth furnace. Fuel combustion, flame direction and shape, exhaust gas discharge, and distribution within the heating chamber are all influenced by the furnace head's structure. Furthermore, charge heating, melting time, and fuel consumption are all directly affected by the furnace head's structure. Therefore, proper furnace head size and diameter selection, along with regular maintenance, are crucial. The furnace head's primary function is to introduce fuel and air into the melting chamber and to remove exhaust gases from it.

[0003] The ignition pin is a crucial component of the stove. Its primary function is to generate a high-voltage spark to ignite the fuel, allowing the stove to function properly. Located in the burner head of the stove, the ignition pin generates a spark when fuel flows into the burner head, igniting the fuel and forming a flame.

[0004] In conventional burner designs, the ignition needle is usually composed of two needles, which generate electric sparks by discharging high voltage between the two needles to ignite the gas. In order to prevent the ignition needle from discharging prematurely, an insulating wrapping layer is often provided at the root of the ignition needle. The two ignition needles are combined by a connector, and finally the connector is fixed to the burner by a fixing screw to achieve overall fixation. During actual use, the applicant found that grease easily accumulates at the upper end of the insulating wrapping layer of the existing ignition needle. Since the fixing screw is connected to the burner shell, the accumulated grease will cause the fixing screw to ignite prematurely, that is, discharge is connected to the shell through the fixing screw, resulting in insufficient voltage at the top of the ignition needle and failure to ignite. Utility Model Content

[0005] To this end, it is necessary to provide an ignition needle and a burner head to solve the problem that grease is easily accumulated at the upper end of the insulating wrapping layer of the existing ignition needle. Since the fixing screw is connected to the burner shell, the accumulated grease will cause the area to ignite prematurely with the fixing screw, that is, discharge through the fixing screw to the shell, resulting in insufficient voltage at the top of the ignition needle and failure to ignite.

[0006] To achieve the above-mentioned purpose, the present invention provides an ignition needle, comprising a pair of conductive members and a connecting member, wherein the pair of conductive members are arranged at intervals on both sides of the connecting member, and the two ends of the conductive member are respectively a power connection end and an ignition end; the conductive member is bent at a certain angle, and there is a gap between the ignition ends of the pair of conductive members that can generate electric sparks; the outer periphery of the conductive member is wrapped with an insulating layer, and the insulating layer extends from a position close to the power connection end to a position close to the ignition end, and the insulating layer covers the bending part of the conductive member, and the insulating layer of the conductive member is fixedly connected to the connecting member.

[0007] Furthermore, a connecting piece is included, and the connecting piece is provided with two fixing holes and a connecting hole. The fixing holes are used to insert the conductive piece, and the connecting holes are used to be fixedly connected to the burner shell after being matched with fixing screws.

[0008] Furthermore, the conductive part is composed of a conductive column and a needle, and the insulating layer is composed of a column sleeve and a bent joint; the conductive column vertically passes through the column sleeve with both ends exposed; one section of the bent joint is vertically sleeved on the upper end of the column sleeve and rests on the top of the connecting part, and the rear end of the needle is inserted into the other section of the bent joint and fixedly connected to the upper end of the conductive column.

[0009] Furthermore, the conductive column is a stud structure, and the lower end of the conductive column is connected to a conductive nut.

[0010] Furthermore, a screw hole is provided at the rear end of the needle, and the screw hole is used to connect with the upper end of the conductive column.

[0011] Furthermore, the diameter of a section of the elbow joint for sleeve connection with the column sleeve is larger than the outer diameter of the column sleeve.

[0012] Furthermore, the conductive member and the connecting member are detachably fixedly connected; or the connecting member is fixedly connected to the insulating layer between the bend of the conductive member and the power connection end.

[0013] Furthermore, the connecting piece may be made of insulating ceramic or stainless steel; and / or

[0014] The insulating layer is made of insulating ceramic.

[0015] Furthermore, the upper portion of the conductive member is bent at ninety degrees, and the ignition end is bent upward relative to the upper portion of the conductive member and is inclined close to it.

[0016] The present invention also provides a burner head, comprising an ignition needle as described in any one of the above technical solutions.

[0017] Different from the existing technology, the above technical solution of the present invention includes a pair of conductive parts, the two ends of the conductive parts are respectively a power connection end and an ignition end; the conductive parts are bent at a certain angle, and there is a gap between the ignition ends of a pair of said conductive parts that can generate electric sparks; the outer periphery of the said conductive parts is wrapped with an insulating layer, and the insulating layer extends from a position close to the power connection end to a position close to the ignition end. By extending the insulating layer to the bent front part of the conductive part, the distance between the exposed part of the conductive part and the fixing screw and the burner shell is increased, thereby avoiding premature discharge, ensuring that the burner can ignite stably, and improving the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1A structural stereogram of the ignition needle described in the background art;

[0019] Figure 2 This is a structural stereogram of the ignition needle according to a specific embodiment of the present utility model;

[0020] Figure 3 This is a partial structural exploded view of an ignition needle according to another specific embodiment of the present invention;

[0021] Figure 4 This is a partial structural cross-sectional view of an ignition needle according to another specific embodiment of the present utility model;

[0022] Figure 5 This is a front cross-sectional view of the structure of the burner according to a specific embodiment of the present invention.

[0023] Description of reference numerals:

[0024] 10. Conductive part; 101. Conductive column; 1011. Conductive nut; 102. Needle; 1021. Screw hole;

[0025] 11. Power terminal;

[0026] 12. Ignition end;

[0027] 20, insulation layer; 201, column sleeve; 202, elbow;

[0028] 30. Connector; 301. Fixing hole; 302. Connecting hole;

[0029] 40. Fixing screws;

[0030] 1. Burner;

[0031] 2. Ignition needle. DETAILED DESCRIPTION

[0032] In order to explain the technical content, structural features, achieved objectives and effects of the technical solution in detail, the following is a detailed description in conjunction with specific embodiments and accompanying drawings.

[0033] References to "embodiments" herein mean that the specific features, structures, or characteristics described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the word "embodiment" in various places in the specification does not necessarily refer to the same embodiment, nor does it particularly limit its independence or relevance to other embodiments. In principle, in this application, as long as there are no technical contradictions or conflicts, the various technical features mentioned in the embodiments can be combined in any manner to form a corresponding implementable technical solution.

[0034] Unless otherwise defined, the technical terms used herein have the same meanings as those generally understood by those skilled in the art to which this application belongs; the use of relevant terms herein is only for describing specific embodiments and is not intended to limit this application.

[0035] In the description of this application, the term "and / or" is used to describe a logical relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A exists, B exists, and both A and B exist. In addition, the character " / " in this document generally indicates that the objects before and after are in a logical "or" relationship.

[0036] In this application, terms such as "first" and "second" are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual quantity, priority or sequence relationship between these entities or operations.

[0037] Without further limitations, in this application, the words "include", "comprise", "have" or other similar expressions used in the sentences are intended to cover non-exclusive inclusion. These expressions do not exclude the presence of additional elements in the process, method or product including the elements, so that the process, method or product including a series of elements may include not only those defined elements, but also other elements not explicitly listed, or elements inherent to such process, method or product.

[0038] Consistent with the understanding in the Patent Examination Guidelines, in this application, expressions such as "greater than," "less than," and "exceed" are understood to exclude the number itself; expressions such as "above," "below," and "within" are understood to include the number itself. In addition, in the description of the embodiments of this application, "multiple" means more than two (including two), and similar expressions related to "multiple" are also understood in this manner, such as "multiple groups" and "multiple times," unless otherwise clearly and specifically limited.

[0039] In the description of the embodiments of the present application, the space-related expressions used, such as "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "vertical", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate the orientation or position relationship based on the orientation or position relationship shown in the specific embodiments or drawings, and are only for the convenience of describing the specific embodiments of the present application or facilitating the reader's understanding, and do not indicate or imply that the device or component referred to must have a specific position, a specific orientation, or be constructed or operated in a specific orientation. Therefore, it should not be understood as a limitation on the embodiments of the present application.

[0040] Unless otherwise expressly specified or limited, in the description of the embodiments of the present application, the terms "installed", "connected", "connected", "fixed", "set", etc. used should be understood in a broad sense. For example, the "connection" can be a fixed connection, a detachable connection, or an integrated setting; it can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. For those skilled in the art of the present application, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0041] See Figure 1 The figure shows the ignition needle structure of the prior art. The ignition needle includes two conductive parts 10. The upper part of the conductive part is bent twice to form an ignition end at the upper end. The conductive part is wrapped with an insulating layer 20 only in a section in the vertical direction, and the two conductive parts are combined and fixed by a connecting part. The connecting part is locked on the burner shell by a fixing screw. During long-term use, grease will accumulate on the upper end of the insulating layer, and because the fixing screw is in direct contact with the burner shell to form an electrical connection, the conductive part is connected to the burner shell through the grease and the fixing screw 40 in the middle of the connecting part for discharge, resulting in insufficient voltage at the ignition end of the conductive part, unable to generate electric sparks, and thus unable to ignite.

[0042] See also Figure 2-5The present invention provides an ignition needle 2, comprising a pair of conductive members 10 and a connector 30. The pair of conductive members are spaced apart on both sides of the connector. The conductive members are made of a conductive material, such as copper, copper alloy or aluminum alloy. The two ends of the conductive member are respectively a power connection end 11 and an ignition end 12. The power connection end 11 is used to electrically connect to the power supply module. The ignition end 12 is the end of the two conductive members close to a suitable distance, so that an electric spark can be formed under high voltage. The conductive member is bent at a certain angle, and the bending angle can be 0-90 degrees. Preferably, the bending angle is 90 degrees, which is convenient for setting the ignition position of the ignition needle 2. There is a gap between the ignition ends 12 of the pair of conductive members that can generate electric sparks, for example, between 0.7mm-0.9mm, which can also be adjusted according to actual conditions, as long as electric sparks can be formed, and is not limited to the aforementioned range. The outer periphery of the conductive member is wrapped with an insulating layer 20, and the insulating layer covers the bending part of the conductive member. The insulating layer of the conductive member is fixedly connected to the connector. The insulating layer 20 is generally made of ceramic material, and the outer periphery of the conductive part is wrapped by ceramic sintering to avoid premature discharge between the two conductive parts or between the conductive part and the outer shell 90 of the burner 1. The insulating layer 20 extends from a position close to the power connection end 11 to a position close to the ignition end 12. By extending the insulating layer 20 to the bent front part of the conductive part, the distance between the exposed part of the conductive part and the fixing screws and the outer shell of the burner 1 is increased, thereby avoiding premature discharge.

[0043] The present invention includes a pair of conductive members 10, each of which has a power connection end 11 and an ignition end 12 at its two ends; the conductive members are bent at a certain angle, and a gap that can generate electric sparks is provided between the ignition ends 12 of the pair of conductive members; the outer periphery of the conductive members is wrapped with an insulating layer 20, and the insulating layer 20 extends from a position close to the power connection end 11 to a position close to the ignition end 12. By extending the insulating layer 20 to the bent front part of the conductive member, the distance between the exposed part of the conductive member and the outer shell of the burner 1 is increased, thereby avoiding premature discharge, ensuring that the burner 1 can ignite stably, and improving the service life.

[0044] Furthermore, the connecting member 30 can be made of the same insulating ceramic material as the insulating layer 20. The connecting member 30 is provided with two fixing holes 301 and a connecting hole 302. The fixing holes 301 are used to insert the conductive member, and the connecting holes 302 are used to be fixedly connected to the outer shell of the furnace head 1 after being matched with fixing screws. The connecting member 30 can be a plate-like structure, such as a circular plate, a square plate, etc. Preferably, a crescent-shaped plate-like structure can be used to save space. The inner diameter of the two fixing holes 301 is adapted to the outer diameter of the insulating layer 20 on the conductive member. After the conductive member is vertically inserted into the fixing holes 301 and extended to a suitable length, the insulating layer 20 can be fixedly connected to the fixing holes 301 by sintering, or fixedly connected by fasteners such as screws. The two conductive parts are combined and fixed by the connector 30 to form a complete ignition needle 2 structure, which is easy to install. In combination with the background technology, since the connector 30 usually needs to pass through the connecting hole 302 by a fixing screw, the distance between the exposed part of the conductive part and the fixing screw is increased by extending the insulating layer 20 to a position close to the ignition end 12, which can effectively avoid premature discharge between the exposed part of the conductive part and the fixing screw, thereby improving the ignition stability of the ignition needle 2. The conductive part and the connector 30 are detachably fixedly connected, such as a snap-on slot connection, a sliding slot connection, etc., for easy assembly. Preferably, the connector is fixedly connected to the insulating layer between the bend of the conductive part and the power connection end. By adjusting the position of the connector, it can be adapted to burners with different internal structures, thereby improving compatibility.

[0045] In this embodiment, the processing technology for fixing a single conductive part and the insulating layer 20 wrapped therein with the connecting part 30 is as follows: first, make the internal conductive part, wrap ceramic on the conductive part and sinter it to fix it, sinter to form the connecting part 30, open two fixing holes 301 and one connecting hole 302 on the connecting part 30, insert the conductive part wrapped with the insulating layer 20 into the fixing hole 301, fix it with screws or glue and then sinter it again, or use glaze for bonding and baking, so that the insulating layer 20 is bonded and fixed to the inner wall of the fixing hole 301, thereby completing the production of the ignition needle 2.

[0046] Furthermore, the conductive part 10 is composed of a conductive column 101 and a needle 102, and the insulating layer 20 is composed of a column sleeve 201 and a bend joint 202; the conductive column 101 vertically passes through the column sleeve 201 and is exposed at both ends; one section of the bend joint 202 is vertically sleeved on the upper end of the column sleeve 201 and rests on the top of the connector 30, and the rear end of the needle 102 is inserted into the other section of the bend joint 202 and fixedly connected to the upper end of the conductive column 101. By structurally splitting the conductive part and the insulating layer 20, production and processing are facilitated, and later replacement of parts is convenient, thereby reducing costs. Preferably, the conductive column 101 is a stud structure, and the lower end of the conductive column 101 is connected to a conductive nut 1011. By setting the conductive column 101 as a stud structure, the insulating layer 20 can fully contact the surface thread of the stud structure and be stably wrapped after sintering. At the same time, the rear end of the needle 102 is provided with a screw hole 1021, which is used to connect to the upper end of the conductive post 101. When the rear end of the needle 102 is inserted into the elbow connector 202, when the elbow connector 202 and the conductive post 101 are plugged together, the screw hole of the needle 102 is connected to the upper end of the conductive post 101, which is convenient for assembly and has high connection stability.

[0047] Preferably, the diameter of the section of the elbow joint 202 that is used to be sleeved with the column sleeve 201 is larger than the outer diameter of the column sleeve 201. When the conductive column 101 and the connector 30 are first formed into a fixed structure, the insulating layer 20 on the upper part of the conductive column 101 and the upper surface of the connector 30 form a stepped limit structure. When the elbow joint 202 is plugged into the conductive column 101, the lower edge of the elbow joint 202 is pressed against the upper surface of the connector 30, forming a limit. By adjusting the length of the plugging of the elbow joint 202 and the conductive column 101, the connection position of the needle head 102 and the conductive column 101 is positioned, ensuring the stability of the electrical connection between the conductive column 101 and the needle head 102, thereby improving the ignition stability of the ignition needle 2.

[0048] Preferably, the connecting member 30 can be made of insulating ceramic or stainless steel; and / or the insulating layer 20 can be made of insulating ceramic. When the connecting member 30 is made of stainless steel, it can be connected to the outer shell of the burner head 1 by riveting.

[0049] Preferably, the upper portion of the conductive member is bent 90 degrees, and the ignition end 12 is bent upward relative to the upper portion of the conductive member and tilted closer. By bending the upper portion of the conductive member horizontally and coordinating the upward bending of the ignition end 12, the ignition end 12 can be brought sufficiently close to the optimal ignition point inside the burner 1, thereby improving the ignition efficiency of the ignition needle 2.

[0050] The present invention also provides a burner head 1, the basic structure of which can refer to the prior art, especially the burner head 1 structure using the same or similar ignition needle 2 as the present invention, which will not be described in detail here. The burner head 1 described in this embodiment includes the ignition needle 2 as described in any of the above embodiments.

[0051] It should be noted that although the above embodiments have been described herein, this does not limit the scope of patent protection of the present utility model. Therefore, based on the innovative concept of the present utility model, changes and modifications to the embodiments described herein, or equivalent structural or process transformations made using the contents of the present utility model specification and drawings, and direct or indirect application of the above technical solutions to other related technical fields are all included in the scope of protection of the present utility model patent.

Claims

1. An ignition needle, characterized in that: It includes a pair of conductive parts and a connecting part, wherein the pair of conductive parts are arranged at intervals on both sides of the connecting part, and the two ends of the conductive parts are respectively a power connection end and an ignition end; the conductive parts are bent at a certain angle, and there is a gap between the ignition ends of a pair of conductive parts that can generate electric sparks; the outer periphery of the conductive parts is wrapped with an insulating layer, and the insulating layer extends from a position close to the power connection end to a position close to the ignition end. The insulating layer covers the bending part of the conductive parts, and the insulating layer of the conductive parts is fixedly connected to the connecting part.

2. The ignition needle according to claim 1, characterized in that: The connecting member is provided with two fixing holes and a connecting hole. The fixing holes are used to insert the conductive member, and the connecting holes are used to be fixedly connected to the burner shell after being matched with fixing screws.

3. The ignition needle according to claim 2, characterized in that: The conductive part consists of a conductive column and a needle, and the insulating layer consists of a column sleeve and a bent joint; the conductive column vertically passes through the column sleeve with both ends exposed; one section of the bent joint is vertically sleeved on the upper end of the column sleeve and rests on the top of the connecting part, and the rear end of the needle is inserted into the other section of the bent joint and fixedly connected to the upper end of the conductive column.

4. The ignition needle according to claim 3, characterized in that: The conductive column is a stud structure, and the lower end of the conductive column is connected to a conductive nut.

5. The ignition needle according to claim 4, characterized in that: A screw hole is provided at the rear end of the needle, and the screw hole is used to connect with the upper end of the conductive column.

6. The ignition needle according to claim 3, characterized in that: The diameter of a section of the elbow joint for sleeve connection with the column sleeve is larger than the outer diameter of the column sleeve.

7. An ignition needle according to any one of claims 1 to 6, characterized in that: The conductive member and the connecting member are detachably fixedly connected; Alternatively, the connecting member is fixedly connected to the insulating layer between the bend of the conductive member and the power connection end.

8. An ignition needle according to any one of claims 1 to 6, characterized in that: The connecting piece may be made of insulating ceramic or stainless steel; and / or the insulating layer may be made of insulating ceramic.

9. The ignition needle according to any one of claims 1 to 6, characterized in that: The upper portion of the conductive member is bent at ninety degrees, and the ignition end is bent upward relative to the upper portion of the conductive member and is inclined close to the upper portion.

10. A burner head, characterized in that: The invention comprises an ignition needle as claimed in any one of claims 1 to 9.

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