Fixed ignition needle device and water heater

Abstract

The utility model provides a fixed ignition needle device and a water heater. The fixed ignition needle device comprises an ignition needle, a feedback needle and a fixed plate, a plurality of connecting holes are formed in the fixing plate, and the ignition needle and the feedback needle penetrate through the connecting holes to be connected with the fixing plate; the ignition needle and the feedback needle respectively comprise a needle body and a cylindrical main body, the needle body axially penetrates through the cylindrical main body and is fixedly connected with the cylindrical main body, and the cylindrical main body is connected to the connecting hole; the cylindrical body of the ignition needle and / or the feedback needle is further provided with a limiting block, the limiting block is fixedly connected with the cylindrical body, and the limiting block abuts against or is fixedly connected with the fixing plate. The fixed type ignition needle device is high in connection strength and not prone to loosening or dislocation in the transportation or using process.

Description

Technical Field

[0001] This utility model belongs to the field of electrical technology, specifically relating to a fixed ignition needle device and a water heater. Background Technology

[0002] Gas-fired water heaters or boilers typically include a combustion system, heat exchange system, water system, flue gas system, and control system. The combustion system controls the combustion of fuels such as natural gas and generally includes a burner, a gas proportional valve, an ignition device, and a flame detection device. The ignition device generates an electric spark to ignite the gas, and then controls the stable combustion of the flame. The ignition device generates an electric spark through high-voltage discharge to ignite the fuel. Traditionally, the ceramic part of the ignition device is directly welded to the metal fixing component. Because ceramic and metal are different materials, the welding process is difficult and prone to poor welds such as incomplete welds. If the weld is faulty, the ceramic part may loosen, affecting the normal operation of the ignition device. Furthermore, excessive force during transportation or installation can also cause the ignition device to loosen, leading to misalignment of the needle and rendering the ignition function unusable. Utility Model Content

[0003] In view of this, the purpose of this utility model is to provide a fixed ignition needle device that can be firmly connected and is not easy to loosen or misalign, and a water heater using the fixed ignition needle device.

[0004] To solve the above-mentioned technical problems, this utility model provides a fixed ignition needle device, including an ignition needle, a feedback needle, and a fixing plate;

[0005] The fixing plate has multiple connection holes, and the ignition needle and the feedback needle pass through the connection holes and are connected to the fixing plate.

[0006] The ignition needle and the feedback needle each include a needle body and a cylindrical body. The needle body passes axially through the cylindrical body and is fixedly connected to the cylindrical body. The cylindrical body is connected to the connection hole.

[0007] A limiting block is also provided on the cylindrical body of the ignition needle and / or the feedback needle. The limiting block is fixedly connected to the cylindrical body and abuts or is fixedly connected to the fixing plate.

[0008] Preferably, the limiting block is provided on the cylindrical body of both the ignition needle and the feedback needle, and multiple limiting blocks are provided on the same side relative to the fixing plate.

[0009] Preferably, the limiting block is disposed on the opposite side of the needle body of the ignition needle and the feedback needle relative to the fixing plate, and the fixed ignition needle device further includes a mounting plate component, which is sleeved on the limiting block and fixedly connected to the fixing plate.

[0010] Preferably, the mounting plate component includes a mounting piece and a box-shaped body. The mounting piece is connected to both sides of the box-shaped body, and the box-shaped body is sleeved on a plurality of the limiting blocks. The inner wall of the box-shaped body abuts against the limiting blocks.

[0011] Preferably, the mounting plate has mounting positioning holes, and the fixing plate has mounting holes at corresponding positions. The fixing plate and the mounting plate components are fixedly connected through the mounting positioning holes and the mounting holes.

[0012] Preferably, the ignition needle includes a first ignition needle and a second ignition needle, the first ignition needle, the second ignition needle and the feedback needle are arranged adjacent to each other in sequence, the first ignition needle includes a first needle body, the second ignition needle includes a second needle body, the feedback needle includes a third needle body, the top ends of the first needle body and the second needle body are arranged opposite to each other, and the top end of the third needle body extends to the side of the top end of the first needle body and the top end of the second needle body.

[0013] Preferably, the ends of the first needle body, the second needle body, and the third needle body extend outward relative to the cylindrical body. The ends of the first needle body and the second needle body are respectively provided with a first connecting line for emitting an ignition signal, and the end of the third needle body is provided with a second connecting line for receiving a feedback signal. The first connecting line and the second connecting line are respectively electrically connected to an external control system.

[0014] Preferably, the cylindrical body and the limiting block are made of ceramic material, and the limiting block and the cylindrical body are an integral structure.

[0015] Preferably, the limiting block is square in shape.

[0016] This utility model also provides a water heater, including a water heater body and a fixed ignition needle device as described in any of the above claims. The fixed ignition needle device is disposed inside the water heater body and is fixedly connected to the water heater body via the fixing plate. The ignition needle and the feedback needle are electrically connected to the control system of the water heater.

[0017] Compared with existing technologies, the fixed ignition needle device and water heater of this solution have at least the following advantages:

[0018] 1. The fixed ignition needle device of this solution has a limiting block on the cylindrical body of the ignition needle and / or feedback needle, and the limiting block abuts or is fixedly connected to the fixing plate to further strengthen the connection strength between the ignition needle and / or feedback needle and the fixing plate, so that it will not easily loosen or become misaligned during transportation or use.

[0019] 2. The fixed ignition needle device in this solution also limits the position of the limit blocks by setting multiple limiting blocks on the same side of the fixed plate and attaching a mounting plate component on it. The clamping of the mounting plate component and the fixed plate can prevent the limit blocks from rotating or loosening, thereby strengthening the position fixation of the ignition needle and feedback needle and avoiding abnormal ignition and feedback. Attached Figure Description

[0020] The above and other objects, features, and advantages of this invention will become clearer through a more detailed description of the preferred embodiments shown in the accompanying drawings. The same reference numerals indicate the same parts throughout the drawings, and the drawings are not intentionally drawn to scale with actual dimensions; the focus is on illustrating the gist of this invention.

[0021] Figure 1 A schematic diagram of the structure of the fixed ignition needle device provided in the embodiment of this utility model;

[0022] Figure 2 This is a schematic diagram of the structure of the fixed ignition needle device provided in a preferred embodiment of the present invention;

[0023] Figure 3 A structural schematic diagram of the fixed ignition needle device provided in a preferred embodiment of this utility model from another angle;

[0024] Figure 4 A schematic diagram of the mounting plate component of the fixed ignition needle device provided in a preferred embodiment of this utility model. Detailed Implementation

[0025] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand this utility model and implement it. However, the embodiments are not intended to limit this utility model. In this embodiment, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this utility model.

[0026] It should be noted that when one element is considered to be "connected" to another element, it can be directly connected to and integrated with the other element, or there may be an intervening element present. The terms "mounted," "one end," "the other end," and similar expressions used in this invention are for illustrative purposes only.

[0027] Please refer to Figure 1 This utility model provides a fixed ignition needle 10 device, including an ignition needle 10, a feedback needle 20, and a fixing plate 30. It can be understood that the ignition needle 10 is used to generate an electric spark to ignite the mixture of gas and air. During ignition, the ignition frequency can reach 10 times per second and continue until the flame is stably burning. The feedback needle 20 is used to detect the presence of the flame and provide feedback on the combustion status to the system. During use, if the ignition needle 10 or the feedback needle 20 becomes loose or shifts, ignition cannot be performed normally, or the flame cannot be detected, resulting in continuous ignition and causing equipment malfunction.

[0028] The fixing plate 30 has multiple connection holes 301, through which the ignition needle 10 and the feedback needle 20 pass and connect to the fixing plate 30. It is understood that the fixing plate 30 can be used to connect to external equipment to fix the position of the ignition needle 10 and the feedback needle 20 in the external equipment. Exemplarily, the ignition needle 10 and the feedback needle 20 can be welded to the fixing plate 30 for the initial fixing of the ignition needle 10, the feedback needle 20, and the fixing plate 30; alternatively, the ignition needle 10 and the feedback needle 20 can simply pass through the connection holes 301 of the fixing plate 30, abutting or press-fitting with the connection holes 301 to fix the ignition needle 10, the feedback needle 20, and the fixing plate 30 relative to each other.

[0029] The ignition needle 10 and the feedback needle 20 each include a needle body 40 and a cylindrical body 50. The needle body 40 passes axially through the cylindrical body 50 and is fixedly connected to the cylindrical body 50. The cylindrical body 50 is connected to the connection hole 301. It can be understood that the cylindrical body 50 is cylindrical or quasi-cylindrical. The axial passage of the needle body 40 through the cylindrical body 50 means that the needle body 40 passes through the cylindrical body 50 along the central axis of the cylindrical body 50. The cylindrical body 50 is generally made of ceramic material, which can isolate high voltage current and ensure that the instantaneous high voltage is released only through the tip of the ignition needle 10, avoiding current leakage to other metal parts.

[0030] A limiting block 60 is also provided on the cylindrical body 50 of the ignition needle 10 and / or feedback needle 20. The limiting block 60 is fixedly connected to the cylindrical body 50 and abuts or is fixedly connected to the fixing plate 30. It is understood that the limiting block 60 cannot pass through the connection hole 301. Therefore, when the ignition needle 10, feedback needle 20 and fixing plate 30 are connected, the limiting block 60 can restrict the connection position of the ignition needle 10, feedback needle 20 and fixing plate 30. The limiting block 60 can be fixedly connected to the fixing plate 30 by welding, gluing or other means, or it can be pressed against the fixing plate 30. Through the function of the limiting block 60, the ignition needle 10 and feedback needle 20 can be prevented from loosening during use.

[0031] Please refer to Figure 1 In a preferred embodiment, limiting blocks 60 are provided on the cylindrical bodies 50 of both the ignition needle 10 and the feedback needle 20, with multiple limiting blocks 60 positioned on the same side relative to the fixing plate 30. It is understood that providing limiting blocks 60 on each ignition needle 10 and feedback needle 20 further ensures their normal operation, as failure of either the ignition needle 10 or the feedback needle 20 will affect normal ignition. The limiting blocks 60 can be positioned on the side of the fixing plate 30 near the tips of the ignition needle 10 and the feedback needle 20. In this configuration, the limiting blocks 60 need to be fixedly connected to the fixing plate 30. This method facilitates the installation of the ignition needle 10 and the feedback needle 20 onto the fixing plate 30, allowing the ends of the ignition needle 10 and the feedback needle 20 to directly pass through the connection holes 301 of the fixing plate 30. Alternatively, the limiting blocks 60 can be positioned on the other side of the fixing plate 30 away from the tips of the ignition needle 10 and the feedback needle 20. On the side, the limiting block 60 and the tips of the ignition needle 10 and feedback needle 20 are separated on both sides by the fixing plate 30. This connection method can fix the limiting block 60 and the fixing plate 30 at the same time when fixing the cylindrical body 50 and the fixing plate 30. For example, when the cylindrical body 50 passes through the fixing plate 30, the limiting block 60 and the fixing plate 30 are in place when they abut. When welding the cylindrical body 50, the limiting block 60 and the fixing plate 30 can be welded together to strengthen the connection strength between the ignition needle 10, the feedback needle 20 and the fixing plate 30.

[0032] Please refer to Figure 1-4Furthermore, the limiting block 60 is located on the opposite side of the needle body 40 of the ignition needle 10 and the feedback needle 20 relative to the fixing plate 30. This means that the limiting block 60 is located on the side of the fixing plate 30 away from the tips of the ignition needle 10 and the feedback needle 20; that is, the limiting block 60 and the tips of the ignition needle 10 and the feedback needle 20 are separated by the fixing plate 30. In this embodiment, the fixed ignition needle 10 device also includes a mounting plate component 70, which is sleeved on the limiting block 60 and fixedly connected to the fixing plate 30. This means that the mounting plate component 70 and the fixing plate 30 clamp the limiting block 60 and fix its position. The connection between the limiting block 60 and the fixing plate 30 can be either abutment or fixed. Through the clamping action of the mounting plate component 70 and the fixing plate 30, the limiting block 60 and the fixing plate 30 can be relatively fixed and cannot rotate.

[0033] Please refer to Figure 1-4 In a preferred embodiment, the mounting plate component 70 includes a mounting piece 701 and a box-shaped body 702. The mounting piece 701 is connected to both sides of the box-shaped body 702 and can be integrally manufactured with the box-shaped body 702. The mounting piece 701 is used to connect the mounting plate component 70 to external equipment. The mounting plate component 70 and the fixing plate 30 can be fixed by welding at the position of the mounting piece 701, or by connecting and fixing with screws or other means. Furthermore, the mounting plate component 70 and the fixing plate 30 can be made of the same material to facilitate welding or riveting processes and avoid poor welding or riveting, such as stainless steel or galvanized steel. The box-shaped body 702 is sleeved on a plurality of limiting blocks 60, and the inner wall of the box-shaped body 702 abuts against the limiting blocks 60. For example, the fixed ignition needle 10 device includes two ignition needles 10 and one feedback needle 20. Each ignition needle 10 and feedback needle 20 is provided with a limiting block 60. The three limiting blocks 60 are arranged adjacent to each other. The box body 702 has a single-sided open structure. The box body 702 forms a receiving cavity that can accommodate multiple limiting blocks 60. When the box body 702 is fitted onto multiple limiting blocks 60, one end face of the limiting block 60 is pressed against the fixing plate 30, and the corresponding other end face abuts against the inner wall of the box body 702. Specifically, the middle limiting block 60 has its bottom and top surfaces abutting against the fixing plate 30 and the inner wall of the box body 702, respectively; the limiting blocks 60 on both sides have their bottom and top surfaces abutting against the fixing plate 30 and the inner wall of the box body 702, respectively, and three of their four sides abutting against or at a short distance from the inner wall of the box body 702. By restricting the position of the limiting blocks 60 through the box body 702, the movement or rotation of the limiting blocks 60 can be prevented, thereby placing the movement or rotation of the ignition needle 10 and the feedback needle 20.

[0034] Please refer to Figure 1-4Furthermore, the mounting plate 701 has mounting positioning holes 703, and the fixing plate 30 has corresponding mounting holes 302. The fixing plate 30 and the mounting plate component 70 are fixedly connected through the mounting positioning holes 703 and mounting holes 302. It is understandable that the external device may also have holes corresponding to the mounting positioning holes 703 and mounting holes 302, allowing the fixing plate 30, the mounting plate component 70, and the external device to be connected and fixed with a single screw. When screw connection is used, the fixing plate 30 and the mounting plate component 70 do not need to be welded or riveted, simplifying the manufacturing process and reducing production costs.

[0035] Please refer to Figure 1-4 In this embodiment, the ignition needle 10 includes a first ignition needle 101 and a second ignition needle 102. The first ignition needle 101, the second ignition needle 102, and the feedback needle 20 are arranged adjacent to each other in sequence. The first ignition needle 101 includes a first needle body 103, the second ignition needle 102 includes a second needle body 104, and the feedback needle 20 includes a third needle body 201. The tops of the first needle body 103 and the second needle body 104 are arranged opposite to each other, and the top of the third needle body 201 extends to the side of the tops of the first needle body 103 and the tops of the second needle body 104. It can be understood that the tops of the first needle body 103 and the second needle body 104 mentioned here refer to the tips of the ignition needle 10. The tops of the first ignition needle 101 and the second ignition needle 102 are opposite to each other for discharging at the tips of the first ignition needle 101 and the second ignition needle 102 to ignite the gas. When the tips of the first ignition needle 101 and the second ignition needle 102 are misaligned, the ignition will be weakened or ignition will fail. The tip of the feedback needle 20 is used to detect the combustion status. When the position of the feedback needle 20 is off, it may produce incorrect detection results, incorrectly trigger safety protection measures, cut off the gas supply, and cause the equipment to malfunction.

[0036] Please refer to Figure 1-4In this embodiment, the ends of the first needle body 103, the second needle body 104, and the third needle body 201 extend outward relative to the cylindrical body 50. The ends of the first needle body 103 and the second needle body 104 are respectively provided with a first connecting line 105 for emitting an ignition signal, and the end of the third needle body 201 is provided with a second connecting line 202 for receiving a feedback signal. The first connecting line 105 and the second connecting line 202 are electrically connected to an external control system. It can be understood that the outward extension of the end of the needle body 40 relative to the cylindrical body 50 means that the ignition needle 10 and the feedback needle 20 pass through the cylindrical body 50 in the axial direction, and the cylindrical body 50 is connected between the needle bodies 40 of the ignition needle 10 and the feedback needle 20. The first connecting line 105 at the end of the ignition needle 10 is connected to the control system of the device. It can receive the ignition signal from the control system and send the ignition signal and high voltage current to the tips of the first needle body 103 and the second needle body 104. The second connecting line 202 at the end of the feedback needle 20 feeds back the detection result of the flame to the control system to control the combustion state.

[0037] In this embodiment, the cylindrical body 50 and the limiting block 60 are made of ceramic. Ceramic material has extremely high insulation resistance, can withstand high voltage without being broken down, isolates high voltage current, and ensures that tens of thousands of volts of instantaneous high voltage are released only through the tip of the ignition needle 10. The limiting block 60 and the cylindrical body 50 are an integral structure. It can be understood that an integral structure means that they are fired together during the manufacturing process. The integral structure of the limiting block 60 and the cylindrical body 50 reduces the connection process between the limiting block 60 and the cylindrical body 50 during the subsequent installation of the fixed ignition needle 10 device. The integral structure also provides high connection strength and will not easily detach.

[0038] Please refer to Figure 1-4 Furthermore, the limiting block 60 is square in shape. Understandably, square shape refers to a cube. On the one hand, a cube is a regular configuration, which facilitates mass production and the manufacture of the mounting plate component 70 that matches its shape. On the other hand, it can also meet the requirement that it is not easy to rotate after being connected to the mounting plate component 70.

[0039] This utility model embodiment also provides a water heater, including a water heater body (not shown in the figure) and a fixed ignition needle device as described above. The fixed ignition needle device is disposed inside the water heater body and is fixedly connected to the water heater body through a fixing plate. The ignition needle and the feedback needle are electrically connected to the control system of the water heater.

[0040] In this specification, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0041] In the description of this specification, the references to terms such as "preferred embodiment," "another embodiment," "other embodiment," or "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0042] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A fixed ignition pin device, characterized in that, The fixed ignition needle device comprises an ignition needle, a feedback needle and a fixed plate; A plurality of connecting holes are formed on the fixed plate, and the ignition needle and the feedback needle pass through the connecting holes and are connected with the fixed plate; The ignition needle and the feedback needle respectively comprise a needle body and a cylindrical body, the needle body passes through the cylindrical body axially and is fixedly connected with the cylindrical body, and the cylindrical body is connected on the connecting hole; The cylindrical body of the ignition needle and / or the feedback needle is further provided with a limiting block, the limiting block is fixedly connected with the cylindrical body, and the limiting block abuts against or is fixedly connected with the fixed plate.

2. The fixed ignition pin apparatus of claim 1, wherein The cylindrical body of the ignition needle and the feedback needle is provided with the limiting block, and a plurality of limiting blocks are arranged on the same side relative to the fixed plate.

3. The fixed ignition pin apparatus of claim 2, wherein, The limiting block is arranged on the other side opposite to the needle body of the ignition needle and the feedback needle relative to the fixed plate, and the fixed ignition needle device further comprises a mounting plate component, the mounting plate component is sleeved on the limiting block and is fixedly connected with the fixed plate.

4. The fixed ignition pin apparatus of claim 3, wherein The mounting plate component comprises a mounting sheet and a box-shaped body, the mounting sheet is connected on both sides of the box-shaped body, the box-shaped body is sleeved on a plurality of limiting blocks, and the inner wall of the box-shaped body abuts against the limiting block.

5. The fixed ignition pin apparatus of claim 4, wherein, Mounting positioning holes are formed on the mounting sheet, mounting holes with corresponding positions are formed on the fixed plate, and the fixed plate and the mounting plate component are fixedly connected through the mounting positioning holes and the mounting holes.

6. The stationary igniter pin apparatus of claim 1, wherein, The ignition needle comprises a first ignition needle and a second ignition needle, the first ignition needle, the second ignition needle and the feedback needle are arranged in sequence and adjacent to each other, the first ignition needle comprises a first needle body, the second ignition needle comprises a second needle body, and the feedback needle comprises a third needle body, the top ends of the first needle body and the second needle body are oppositely arranged, and the top end of the third needle body extends to the side surface of the top ends of the first needle body and the second needle body.

7. The fixed ignition pin apparatus of claim 6, wherein, The ends of the first needle body, the second needle body and the third needle body extend outward relative to the cylindrical body, the ends of the first needle body and the second needle body are respectively provided with a first connecting line for emitting an ignition signal, the end of the third needle body is provided with a second connecting line for recycling a feedback signal, and the first connecting line and the second connecting line are respectively electrically connected with an external control system.

8. The stationary igniter pin apparatus of claim 1, wherein, The cylindrical body and the limiting block are made of ceramic material, and the limiting block and the cylindrical body are an integral structure.

9. The stationary igniter pin apparatus of claim 1, wherein, The limiting block is square in shape.

10. A water heater, characterized by The fixed ignition needle device comprises a water heater body and the fixed ignition needle device according to any one of claims 1-9, the fixed ignition needle device is arranged in the water heater body, the fixed ignition needle device is fixedly connected with the water heater body through the fixed plate, and the ignition needle and the feedback needle are electrically connected with a control system of the water heater.

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