Piezoelectric ignition type gas valve with high compatibility

Abstract

The application relates to the technical field of gas valves and discloses a piezoelectric ignition type gas valve with high compatibility, which comprises a valve body, a valve core assembly and a valve seat; the valve body is provided with an air inlet and an air outlet; a piezoelectric ignition device is connected with the valve seat; the valve seat can be connected with the valve body in the up-down direction to make the piezoelectric ignition device and the air inlet located on the same side or different sides; a rotating shaft assembly can be rotatably connected on the valve seat and can be moved along the central axis direction of the valve body to be connected with the valve core assembly; an ignition knob can be slidably sleeved on the rear end of the rotating shaft assembly; a limiting structure is integrally formed on the rear end of the rotating shaft assembly; the front end of a spring part is connected with the ignition knob; and the rear end of the spring part is connected with the limiting structure through a limiting contact mode. The piezoelectric ignition type gas valve with high compatibility has high compatibility with other gas valves, has few parts, simplifies the assembly process, reduces the operation and assembly difficulty, and shortens the assembly time.

Description

Technical Field

[0001] This invention relates to the field of gas valve technology, and in particular to a highly compatible piezoelectric ignition gas valve. Background Technology

[0002] Traditional piezoelectric ignition gas valves typically consist of a valve body, valve seat, valve core, inlet connector, outlet connector, ignition lever, and piezoelectric ignition device. The connection between the ignition shaft and the spring component relies on independent clips or pins for fixation.

[0003] For example, Chinese patent application CN200820200035.X discloses a novel gas valve, including a valve body, a valve seat, and an ignition device. The valve body has a gas inlet, and one end of the valve body has a gas nozzle. A valve cavity is provided between the gas inlet and the gas nozzle, and a valve core is provided in the valve cavity. A rotating shaft is passed through the valve seat and is movably connected to the valve core, which can drive the valve core to rotate and control the gas flow. The ignition device includes an electronic wire, one end of which has an ignition needle, and the other end is connected to a high-temperature piezoelectric ceramic. An electronic card, a hammer that can strike the electronic card, and a trigger spring that can push the hammer to move are provided on one side of the high-temperature piezoelectric ceramic. The hammer has a protrusion, and the rotating shaft has a pull block that can drive it to rotate. The pull block has a lug that can push the protrusion of the hammer. On the rotating shaft, an open retaining ring, a retaining ring, and a shaft spring are also provided on the outside of the pull block.

[0004] However, the shaft spring of this new gas valve is fixed to the rotating shaft by an open snap ring and a retaining ring. This type of design has the following drawbacks: 1. Large number of parts: Additional fasteners such as open-end retaining rings and retaining rings are required, increasing procurement and inventory costs; 2. Complex assembly: Fixing the shaft spring to the rotating shaft requires multiple processes, and assembly failure is easily caused by operational errors; 3. Low production efficiency: Independent fasteners require separate processing and quality inspection, which extends the production cycle. Summary of the Invention

[0005] The purpose of this invention is to overcome the problems of the prior art and provide a highly compatible piezoelectric ignition gas valve that is highly compatible with other gas valves, has fewer parts, simplifies the assembly process, shortens the assembly time, and has high production efficiency.

[0006] To achieve the above objectives, the present invention adopts the following solution: A highly compatible piezoelectric ignition gas valve includes a valve body, a valve core assembly, and a valve seat; the valve body has an inlet and an outlet; the highly compatible piezoelectric ignition gas valve further includes: A piezoelectric ignition device is connected to the valve seat; the valve seat can be connected to the valve body by switching its position up and down relative to the valve body, so that the piezoelectric ignition device and the air inlet are located on the same side or opposite side; A rotating shaft assembly, which is rotatably connected to the valve seat and can move along the central axis of the valve body to connect with the valve core assembly, is used to open or close the communication between the air inlet and the air outlet. Ignition lever, which can be slidably fitted onto the rear end of the rotating shaft assembly; The limiting structure is integrally formed on the rear end of the rotating shaft assembly; A spring component is fitted onto the rear end of the rotating shaft assembly; the front end of the spring component is connected to the ignition lever. The rear end of the spring is connected to the limiting structure through a limiting contact method to prevent the spring from slipping out of the rotating shaft assembly.

[0007] Furthermore, the air inlet is located on the upper end of the side wall of the valve body; the vertical distance between the center of the air inlet and the central axis of the valve body is 18-19 mm; The distance between the central axis of the air inlet and the rear end face of the valve seat is 30-31 mm.

[0008] Furthermore, the rotating shaft assembly includes an ignition rotating shaft and a return spring; the front end of the return spring is connected to the rear end of the valve core assembly, and the rear end of the return spring is sleeved on the front end of the ignition rotating shaft; The ignition shaft has a shaft body extending out of the valve seat; the ignition lever is fitted onto the shaft body; the limiting structure is integrally formed on the outer wall of the shaft body; the spring is fitted onto the shaft body; the front end of the spring is connected to the ignition lever; the rear end of the spring is connected to the limiting structure through a limiting contact method to prevent the spring from slipping out of the shaft body.

[0009] Furthermore, the limiting structure is a limiting slot.

[0010] Furthermore, the spring is a conical spring; the wide end of the spring is in contact with the ignition lever; the narrow end of the spring is limited and engaged in the limiting groove and abuts against the rear wall of the limiting groove, so as to prevent the spring from sliding out from the rear end of the rotating shaft.

[0011] Furthermore, the side wall of the rotating shaft body has a first notch positioning groove; the first notch positioning groove has a first limiting groove bottom surface for restricting the rotation of the ignition trigger relative to the ignition rotating shaft; the side wall of the rotating shaft body also has a second notch positioning groove extending from the rear end of the rotating shaft body towards the rear end of the first notch positioning groove after removing material; the second notch positioning groove has a second limiting groove bottom surface; The distance between the bottom surface of the first limiting groove and the central axis of the ignition shaft is greater than the distance between the bottom surface of the second limiting groove and the central axis of the ignition shaft. Both the first notch positioning groove and the second notch positioning groove are groove structures in the shape of an inverted L.

[0012] Furthermore, the valve core assembly includes a valve core, a push rod, a first sealing ring, a second sealing ring, a top pressure spring, and a compression washer; the valve body has a valve core cavity that communicates with the air inlet and the air outlet respectively; the valve core is rotatably adapted and installed in the valve core cavity; an ignition pipe is connected to the side wall of the valve body; the valve core has a first air guide cavity that communicates with the air inlet and the air outlet respectively, a second air guide cavity that communicates with the rear end of the first air guide cavity, a guide slide cavity that communicates with the rear end of the second air guide cavity, and an air outlet that communicates with the second air guide cavity and can be connected to the ignition pipe; The rear end of the push rod can move sequentially through the first air guide cavity, the second air guide cavity, and the guide slide cavity; the front end of the push rod has a plug located in the first air guide cavity and used to open or close the front end of the second air guide cavity. The first sealing ring is adapted to be fitted on the plug head; the second sealing ring is adapted to be fitted on the top rod and is located inside the front end of the guide cavity; The top pressure spring is sleeved on the rear end of the top rod; the front end of the top pressure spring is connected to the valve body through a compression washer, and the rear end of the top pressure spring is connected to the top rod. The front end of the ignition shaft has a pressing insert; the pressing insert can be movably embedded in the guide slide cavity and presses the push rod to move forward.

[0013] Furthermore, the valve body has a guide groove that is opened along its central axis, communicates with the guide slide cavity, and is adapted to be engaged with the top pressure insert; the top pressure insert can move forward in the guide groove to press the top rod to move forward.

[0014] Furthermore, the piezoelectric ignition device includes a mounting housing, a mounting cover, a hammer, an electronic igniter, and an ignition needle; The mounting housing is connected to the valve seat and is located on the same side or opposite side as the air inlet; the valve seat and the mounting housing are integrally formed. The electronic igniter is fitted into the mounting housing; one end of the hammer is connected to the electronic igniter; the mounting housing has an opening for one end of the ignition lever to extend into the other end to push the hammer when rotating with the shaft; the mounting cover is fitted onto the mounting housing; the ignition needle is near the gas outlet of the ignition line and is electrically connected to the electronic igniter.

[0015] Furthermore, the angle between the central axis of the valve body and the central axis of the air outlet is 0° or 30°.

[0016] Compared with existing technologies, the present invention has the following advantages: 1. Based on the valve body, valve core assembly, valve seat, piezoelectric ignition device, and ignition lever, this invention improves the rotating shaft assembly, limiting structure, and spring component. An integrally formed limiting structure, such as a limiting groove, is designed at the outward-facing end of the rotating shaft assembly. During assembly, simply fitting the spring component onto the outward-facing end of the rotating shaft assembly allows the rear end of the spring component to form a mechanical limiting contact with the limiting structure, thus completing the fixation. This enables the ignition lever to slide stably onto the outward-facing end of the rotating shaft assembly. Compared to traditional designs, this design eliminates the need for additional fixing components, requiring only an integral molding process to manufacture the rotating shaft assembly and limiting structure. This reduces the number of parts, simplifies the assembly process, lowers the difficulty of operation and assembly, and shortens assembly time.

[0017] 2. The valve seat of this invention can be switched between vertical and horizontal positions relative to the valve body, and can be connected to the valve body in both directions. This allows for flexible adjustment of the relative position between the piezoelectric ignition device and the gas inlet. Given the proximity of the gas inlet to the gas pipeline, the positional relationship between the piezoelectric ignition device and the gas pipeline can be switched more flexibly. This allows the piezoelectric ignition gas valve to better adapt to the layout of the gas pipeline and be used in conjunction with other gas valves. Within the limited space of the gas pipeline, it avoids interference with components of other gas valves, facilitating installation and layout, and forming a more stable gas control system. It is particularly suitable for gas equipment in compact spaces, offering better compatibility and better meeting diverse installation needs. Attached Figure Description

[0018] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0019] Figure 1 This is one of the three-dimensional structural diagrams of the highly compatible piezoelectric ignition gas valve of Embodiment 1 of the present invention.

[0020] Figure 2 This is the second three-dimensional structural diagram of the highly compatible piezoelectric ignition gas valve of Embodiment 1 of the present invention.

[0021] Figure 3 yes Figure 2 An enlarged view of part A shown.

[0022] Figure 4 This is a three-dimensional structural diagram of a highly compatible piezoelectric ignition gas valve according to Embodiment 1 of the present invention.

[0023] Figure 5 This is a three-dimensional structural diagram of the ignition shaft according to Embodiment 1 of the present invention.

[0024] Figure 6 This is a three-dimensional structural schematic diagram of the spring component according to Embodiment 1 of the present invention.

[0025] Figure 7 This is a three-dimensional structural diagram of the valve core according to Embodiment 1 of the present invention.

[0026] Figure 8 This is a half-sectional view of the valve core of Embodiment 1 of the present invention at one angle.

[0027] Figure 9 This is a three-dimensional structural diagram of the valve body and valve seat connected according to Embodiment 1 of the present invention.

[0028] Figure 10 This is a three-dimensional structural diagram of two installation methods of the highly compatible piezoelectric ignition gas valve in a gas pipeline according to Embodiment 1 of the present invention.

[0029] Figure 11 This is a three-dimensional structural diagram of a highly compatible piezoelectric ignition gas valve according to Embodiment 2 of the present invention.

[0030] Figure 12 This is a side view of the highly compatible piezoelectric ignition gas valve according to Embodiment 2 of the present invention.

[0031] The image includes: Valve body 1, air inlet 11, air outlet 12, valve core cavity 13, valve core assembly 2, valve core 21, first air guide cavity 211, second air guide cavity 212, guide slide cavity 213, guide slide groove 214, air outlet 215, push rod 22, plug head 221, first sealing ring 23, second sealing ring 24, top pressure spring 25, valve seat 3, piezoelectric ignition device 4, mounting shell 41, actuation opening 411, mounting 42. Cover, hammer, electronic igniter, ignition needle, rotating shaft assembly, ignition rotating shaft, rotating shaft body, first notch positioning groove, first limiting groove bottom surface, second notch positioning groove, second limiting groove bottom surface, top pressing part, reset spring, ignition lever, limiting structure, spring component, ignition pipe, gas pipe, etc. Detailed Implementation

[0032] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and are not intended to limit the scope of the invention. Example 1:

[0033] like Figures 1 to 10 As shown, a highly compatible piezoelectric ignition gas valve includes a valve body 1, a valve core assembly 2, a valve seat 3, a piezoelectric ignition device 4, a rotating shaft assembly 5, an ignition lever 6, a limiting structure 7, and a spring 8. The valve body 1 has an inlet 11 and an outlet 12. The inlet 11 is located on the upper end of the side wall of the valve body 1. The piezoelectric ignition device 4 is connected to the valve seat 3 and is used to work in conjunction with the ignition lever 6 to ignite the gas flowing out of the outlet 12. The valve seat 3 can be connected to the valve body 1 by switching its position up and down relative to the valve body 1, so that the piezoelectric ignition device 4 and the inlet 11 are located on the same side or opposite sides. For example, when the piezoelectric ignition device 4 is installed on the upper end of the valve seat 3, the upper end of the switching valve seat 3 and the upper end of the valve body 1 are on the same side, that is, the piezoelectric ignition device 4 and the air inlet 11 are on the same side. Similarly, when the upper end of the switching valve seat 3 and the lower end of the valve body 1 are on the same side, that is, the piezoelectric ignition device 4 and the air inlet 11 are on opposite sides. This design allows the valve seat 3 to switch positions relative to the valve body 1, connecting to it in both directions. This enables flexible adjustment of the relative positions of the piezoelectric ignition device 4 and the inlet 11. Given the proximity of the inlet 11 to the gas pipeline, the positional relationship between the piezoelectric ignition device 4 and the gas pipeline can be switched more flexibly. This allows the piezoelectric ignition gas valve to better adapt to the layout of the gas pipeline and be used in conjunction with other gas valves. Within the limited space of the gas pipeline, it avoids interference with other gas valve components, facilitating installation and layout, and forming a more stable gas control system. It is particularly suitable for gas equipment in compact spaces, offering better compatibility and better meeting diverse installation needs. The rotating shaft assembly 5 is rotatably connected to the valve seat 3 and can move along the central axis of the valve body 1 to connect with the valve core assembly 2. It is used to adjust the operation of the valve core assembly 2 to open or close the connection between the inlet 11 and the outlet 12, thereby achieving on / off control of the inlet 11 and the outlet 12. Ignition lever 6 is slidably mounted on the rear end of the rotating shaft assembly 5; a limiting structure 7 is integrally formed on the rear end of the rotating shaft assembly 5; a spring 8 is mounted on the rear end of the rotating shaft assembly 5; the front end of the spring 8 is connected to the ignition lever 6; the rear end of the spring 8 is connected to the limiting structure 7 through a limiting contact method to prevent the spring 8 from slipping out of the rotating shaft assembly 5.

[0034] This highly compatible piezoelectric ignition gas valve, based on the valve body 1, valve core assembly 2, valve seat 3, piezoelectric ignition device 4, and ignition lever 6, improves the rotating shaft assembly 5, limiting structure 7, and spring 8. An integrally formed limiting structure 7, such as a limiting groove, is designed at the outward end of the rotating shaft assembly 5. During assembly, simply fitting the spring 8 onto the outward end of the rotating shaft assembly 5 allows the rear end of the spring 8 to form a mechanical limiting contact with the limiting structure 7, thus securing it. This allows the ignition lever 6 to slide stably onto the outward end of the rotating shaft assembly 5. Compared to traditional designs, this design eliminates the need for additional fasteners, requiring only an integral molding process to manufacture the rotating shaft assembly 5 and the limiting structure 7. This reduces the number of parts, simplifies the assembly process, lowers the difficulty of operation and assembly, and shortens assembly time.

[0035] In this embodiment, the angle between the central axis of the valve body 1 and the central axis of the gas outlet 12 is 0°. By aligning or paralleling the central axis of the valve body 1 and the central axis of the gas outlet 12, the gas flows in a straight line, reducing eddies and resistance caused by changes in direction. This results in smoother gas flow, less pressure loss, and improved gas delivery efficiency. Furthermore, the linear arrangement of the valve body 1 and the gas outlet 12 results in a relatively simple and compact overall structure, occupying less space and facilitating the installation and arrangement of gas pipeline systems within limited spaces.

[0036] In this embodiment, the air inlet 11 is located on the upper end of the side wall of the valve body 1; the vertical distance between the center of the air inlet 11 and the central axis of the valve body 1 is 18-19 mm, denoted as D, preferably 18.2 mm, 18.3 mm, or 18.5 mm; the distance between the central axis of the air inlet 11 and the rear end face of the valve seat 3 is 30-31 mm, denoted as L, preferably 30.2 mm, 30.3 mm, or 30.5 mm. Compared with existing gas valves, the vertical distance between the center of the air inlet 11 and the central axis of the valve body 1, as well as the distance to the rear end face of the valve seat 3, are precisely designed and rationally optimized. The corresponding distance reduction design makes the overall structure of this piezoelectric ignition gas valve more compact. In a limited space, this optimized design can better optimize the valve core assembly 2 integrated in the valve body 1. The compact structure is conducive to the miniaturization of the overall product size and is suitable for installation environments with strict space requirements, such as small gas appliances and ovens.

[0037] In this embodiment, the rotating shaft assembly 5 includes an ignition rotating shaft 51 and a return spring 52. The front end of the return spring 52 is connected to the rear end of the valve core assembly 2, and the rear end of the return spring 52 is sleeved on the front end of the ignition rotating shaft 51. The connection design of the return spring 52 with the valve core assembly 2 and the ignition rotating shaft 51 ensures that the ignition rotating shaft 51 can quickly and accurately return to its initial position after the valve core assembly 2 is activated. The ignition rotating shaft 51 is made of iron, stainless steel, or aluminum alloy, using relatively high-strength materials to enhance its rigidity, ensuring a stable and reliable structure and extending its service life. The ignition shaft 51 has a shaft body 511 extending out of the valve seat 3; the ignition lever 6 is fitted onto the shaft body 511; the limiting structure 7 is integrally formed on the outer wall of the shaft body 511; the spring 8 is fitted onto the shaft body 511; the front end of the spring 8 is connected to the ignition lever 6; the rear end of the spring 8 is connected to the limiting structure 7 through a limiting contact method to prevent the spring 8 from slipping out of the shaft body 511. An integrally formed limiting structure 7, such as a limiting groove, is designed on the shaft body 511 of the ignition shaft 51. During assembly, only the spring 8 needs to be fitted onto the shaft body 511, so that the rear end of the spring 8 can form a mechanical limiting contact with the limiting structure 7 to complete the fixation. This allows the ignition lever 6 to slide stably on the shaft body 511. Compared with the traditional design, this design does not require additional fixing parts. The shaft body 511 and the limiting structure 7 can be manufactured using an integral molding process, reducing the number of parts, simplifying the assembly process, shortening the assembly time, and significantly improving production efficiency.

[0038] In this embodiment, the limiting structure 7 is a limiting groove. The limiting groove provides a clear stopping point for the spring 8, ensuring that the spring 8 will not excessively extend or deviate during operation, thereby guaranteeing the movement trajectory and positional accuracy of the ignition lever 6 and improving the reliability of the ignition system. Connecting the spring 8 and the rotating shaft 511 through a limiting contact method can effectively prevent the spring 8 from slipping off the rotating shaft 511 under conditions of vibration, impact, extension, etc., enhancing the stability of the entire piezoelectric ignition gas valve and extending its service life. In addition, the limiting groove structure is simple, easy to process and assemble, reducing assembly difficulty and time costs, and also facilitating later maintenance and repair. In another embodiment, the limiting structure 7 is a limiting protrusion. The limiting protrusion can be an annular protrusion structure with an outward protrusion design on the side wall of the rotating shaft 511, or it can be one or more protrusion structures arranged around the central axis of the rotating shaft 511. This can also reduce the number of parts, simplify the assembly process, shorten the assembly time, and significantly improve production efficiency. The limiting protrusion is easily imagined by those skilled in the art and is not shown in the attached figure.

[0039] To better achieve a stable limiting contact connection between the spring element 8 and the rotating shaft 511, as a more specific solution, the spring element 8 is a conical spring; the wide end of the spring element 8 abuts against the ignition lever 6; the narrow end of the spring element 8 is limited and engaged in the limiting groove and abuts against the rear wall of the limiting groove, thereby restricting the spring element 8 from slipping out of the rear end of the rotating shaft 511, effectively preventing the spring element 8 from slipping out of the rear end of the rotating shaft 511, ensuring the stability of the connection, and avoiding malfunctions caused by the displacement of the spring element 8. At the same time, the wide end design of the spring element 8 makes it easy to fit onto the rotating shaft 511 and abut against the ignition lever 6, allowing the ignition lever 6 to be stably and elastically slidably connected to the rotating shaft 511. Moreover, the narrow end of the spring element 8 is limited and engaged in the rear wall of the limiting groove, thereby limiting the ignition lever 6 through the limiting spring element 8, making the connection stable and reliable.

[0040] In this embodiment, the side wall of the rotating shaft 511 has a first notch positioning groove 5111; the first notch positioning groove 5111 has a first limiting groove bottom surface 51111 for limiting the rotation of the ignition knob relative to the ignition rotating shaft 51; the side wall of the rotating shaft 511 also has a second notch positioning groove 5112 extending from the rear end of the rotating shaft 511 towards the rear end of the first notch positioning groove 5111 after removing material; the second notch positioning groove 5112 has a second limiting groove bottom surface 51121; the distance between the first limiting groove bottom surface 51111 and the central axis of the ignition rotating shaft 51 is greater than the distance between the second limiting groove bottom surface 51121 and the central axis of the ignition rotating shaft 51; the design purpose of the second notch positioning groove 5112 and the second limiting groove bottom surface 51121 is to ensure structural stability and reliability when the knob is connected to the ignition rotating shaft 51, and to prevent the knob from rotating relative to the ignition rotating shaft 51. Both the first notch positioning groove 5111 and the second notch positioning groove 5112 are inverted L-shaped groove structures. Through the stepped design of the bottom surface 51111 of the first rotation limiting groove and the bottom surface 51121 of the second rotation limiting groove, a two-stage radial limiting structure 7 is formed. The bottom surface 51121 of the second rotation limiting groove is closer to the central axis of the rotating shaft, effectively limiting the knob's rotational displacement in the radial direction, achieving a double anti-rotation effect in conjunction with the first notch groove. Furthermore, the inverted L-shaped groove structure forms a composite limiting effect in both the axial and circumferential directions. The stepped surface formed by material removal enhances contact rigidity, reducing the risk of fretting wear during long-term use compared to a single planar limiting structure 7. The first notch positioning groove 5111 and the second notch positioning groove 5112, as stepped notch positioning groove designs, first complete the positioning and installation with the ignition lever 6 through the first notch positioning groove 5111 to prevent the ignition lever 6 from rotating, and then use the second notch positioning groove 5112 for precise positioning to prevent the knob from rotating.

[0041] In this embodiment, the valve core assembly 2 includes a valve core 21, a push rod 22, a first sealing ring 23, a second sealing ring 24, a top pressure spring 25, and a pressure washer; the valve body 1 has a valve core cavity 13 that communicates with the air inlet 11 and the air outlet 12 respectively; the valve core 21 is rotatably adapted to be installed in the valve core cavity 13; an ignition pipe 9 is connected to the side wall of the valve body 1; the valve core 21 has a first air guide cavity 211 that communicates with the air inlet 11 and the air outlet 12 respectively, a second air guide cavity 212 that communicates with the rear end of the first air guide cavity 211, a guide slide cavity 213 that communicates with the rear end of the second air guide cavity 212, and an air outlet 2 that communicates with the second air guide cavity 212 and can be connected to the ignition pipe 9. 15; The rear end of the push rod 22 can move sequentially through the first gas guide chamber 211, the second gas guide chamber 212, and the guide slide chamber 213; the front end of the push rod 22 has a plug head 221 located in the first gas guide chamber 211 and used to open or close the front end of the second gas guide chamber 212; the first sealing ring 23 is adapted to fit on the plug head 221; the second sealing ring 24 is adapted to fit on the push rod 22 and located in the front end of the guide slide chamber 213; the push rod 22 precisely controls the opening and closing of the second gas guide chamber 212 through the plug head 221, and combined with the double sealing of the first sealing ring 23 and the second sealing ring 24, ensures that the gas is accurately connected or completely cut off when needed, avoids gas leakage, and improves the safety of use. Moreover, the first sealing ring 23 and the second sealing ring 24 seal the plug head 221 and the push rod 22 respectively, effectively preventing gas leakage from the second gas guide chamber 212 and the guide slide chamber 213. Even under long-term use or frequent opening and closing, it can maintain a good sealing effect and reduce gas consumption. The top-pressure spring 25 is sleeved on the rear end of the top rod 22; the front end of the top-pressure spring 25 is connected to the valve body 1 through a clamping washer, and the rear end of the top-pressure spring 25 is connected to the top rod 22; the front end of the ignition shaft 51 has a top-pressure insert 512; the top-pressure insert 512 can be movably embedded in the guide slide cavity 213 and presses the top rod 22 forward. The top-pressure insert 512 of the ignition shaft 51 cooperates with the guide slide cavity 213 to accurately transmit the force required for ignition action, realizing precise linkage between the gas valve and the piezoelectric ignition device 4. This design enables the gas valve to respond quickly to the ignition signal, ensuring timely gas supply and meeting the requirements of rapid start-up and stable combustion of piezoelectric ignition gas equipment. The top-pressure spring 25 is connected to the top rod 22, and its front end is fixed to the valve body 1 through a clamping washer. When the top-pressing part 512 of the ignition shaft 51 is inserted into the guide slide cavity 213 and the top-pressing rod 22 moves forward, the first air guide cavity 211 and the second air guide cavity 212 are connected; when the top-pressing part 512 of the ignition shaft 51 releases the pressure on the rod 22, the top-pressing spring 25 can quickly reset the rod 22, thereby closing the front end of the second air guide cavity 212 and preventing it from connecting with the first air guide cavity 211.

[0042] To enable the valve core 21 to rotate more stably and facilitate the opening or closing of the connection between the air inlet 11 and the air outlet 12, the valve body 1 has a guide groove 214 that is opened along its central axis, communicates with the guide slide cavity 213, and is adapted to be engaged with the top pressure insert 512. The top pressure insert 512 can move forward in the guide groove 214 to press the top rod 22 forward. When the top pressure insert 512 is embedded in the guide groove 214, the valve core 21 can rotate stably. At the same time, it can also move forward in the guide groove 214, which facilitates the top pressure insert 512 to be movably embedded in the guide slide cavity 213 and press the top rod 22 forward, thus realizing the connection between the first air guide cavity 211 and the second air guide cavity 212.

[0043] In this embodiment, the piezoelectric ignition device 4 includes a mounting shell 41, a mounting cover 42, a hammer 43, an electronic igniter 44, and an ignition needle 45. The mounting shell 41 is connected to the valve seat 3 and is located on the same side or opposite side as the air inlet 11. As a more specific solution, the valve seat 3 and the mounting shell 41 are integrally formed. This design avoids the welding or assembly gaps of traditional split structures. At the same time, it reduces the number of parts and assembly processes, reduces production costs and manufacturing difficulty, and improves production efficiency and product quality consistency. The electronic igniter 44 is fitted into the mounting housing 41; one end of the hammer 43 is connected to the electronic igniter 44; the mounting housing 41 is provided with an actuation opening 411 for one end of the ignition lever 6 to extend into the other end to push the hammer 43 when rotating with the shaft; the mounting cover 42 is fitted onto the mounting housing 41; the ignition needle 45 is close to the gas outlet of the ignition pipe 9 and is electrically connected to the electronic igniter 44. With this design, the piezoelectric ignition device 4 mainly consists of the mounting housing 41, mounting cover 42, hammer 43, electronic igniter 44, and ignition needle 45. When the ignition lever 6 rotates with the shaft, it can push the hammer 43 through the actuation opening 411, and the hammer 43 then drives the electronic igniter 44 to generate a high-voltage electric spark, achieving rapid ignition with high efficiency, meeting the ignition needs of different scenarios.

[0044] The application principle of this highly compatible piezoelectric ignition gas valve is as follows: When used in conjunction with other gas valves, depending on the position of the other gas valves and gas pipeline 10, one option is to switch the upper end of the valve seat 3 to the same side as the upper end of the valve body 1, that is, the piezoelectric ignition device 4 and the air inlet 11 are located on the same side. Another option is to switch the upper end of the valve seat 3 to the same side as the lower end of the valve body 1, that is, the piezoelectric ignition device 4 and the air inlet 11 are located on opposite sides. This design allows the valve seat 3 to switch positions relative to the valve body 1 in both vertical and horizontal directions, always connecting to the valve body 1. This enables flexible adjustment of the relative position between the piezoelectric ignition device 4 and the gas inlet 11. Given the proximity of the gas inlet 11 to the gas pipeline, the positional relationship between the piezoelectric ignition device 4 and the gas pipeline can be switched more flexibly. This allows the piezoelectric ignition gas valve to better adapt to the layout of the gas pipeline and be used in conjunction with other gas valves. Within the limited space of the gas pipeline, it avoids interference with components of other gas valves, facilitating installation and layout, forming a more stable gas control system. It is particularly suitable for gas equipment in compact spaces, offering better compatibility and better meeting diverse installation needs. Figure 10 As shown, the two selection methods of this highly compatible piezoelectric ignition gas valve on the gas pipeline 10 enable it to be better matched with other gas valves on the gas pipeline 10.

[0045] In use, firstly, manually push the ignition shaft 51 forward. The elastic compression pushes the ignition lever 6 forward until the ignition lever 6 is close to the rear end face of the valve seat 3 and the actuation opening 411. At this time, the top-pressing part 512 of the ignition shaft 51 moves and embeds into the guide groove 214, the return spring 52 is compressed, and as the top-pressing part 512 continues to move forward in the guide groove 214, it pushes the push rod 22 in the guide groove 214 forward, the top-pressing spring 25 is compressed, and the connection between the first air guide chamber 211 and the second air guide chamber 212 is realized. Then, manually rotate the ignition shaft 51. The valve core 21 rotates with the ignition shaft 51, connecting the first gas guide chamber 211 with the air inlet 11. That is, the air inlet on the valve core 21 that communicates with the first gas guide chamber 211 is connected to the air inlet 11. At this time, the gas enters the first gas guide chamber 211 from the air inlet 11. Part of the gas flows directly from the first gas guide chamber 211 to the air outlet 12, while the other part of the gas passes through the first gas guide chamber 211, the second gas guide chamber 212, the air outlet 215, and the ignition pipe 9, and finally flows out at the air outlet of the ignition pipe 9. At the same time, the ignition lever 6 also rotates with the shaft, which can push the hammer 43 by moving the opening 411. The hammer 43 then drives the electronic igniter 44 to generate a high-voltage electric spark, realizing rapid ignition at the air outlet of the ignition pipe 9. If no open flame is successfully lit, immediately cut off the gas supply. Only after a safety check confirms that there are no problems should you attempt to ignite the gas again.

[0046] Finally, after successful ignition, the ignition shaft 51 is released, and the return spring 52, the top pressure spring 25, and the elastic element elastically reset accordingly. The ignition shaft 51 resets under the action of the return spring 52, disengages from the guide groove 214, and moves out of the guide slide cavity 213. The push rod 22, lacking pushing force, also elastically resets under the action of the top pressure spring 25, closing the connection between the first gas guide cavity 211 and the second gas guide cavity 212. Gas output from the ignition pipe 9 stops, completing the open flame of the piezoelectric ignition gas valve. When closing the open flame, the top pressure insert 512 of the ignition shaft 51 is pushed to move and embed into the guide groove 214, causing the valve core 21 to rotate in the opposite direction, resetting the valve core 21 and closing the connection between the first gas guide cavity 211 and the air inlet 11. The pushed ignition shaft 51 is released, and the ignition shaft 51 automatically resets, extinguishing the open flame. Example 2:

[0047] In this embodiment, as Figures 11 to 12 As shown, the highly compatible piezoelectric ignition gas valve of Embodiment 2 is basically the same as that of Embodiment 1, except that the angle between the central axis of the valve body 1 and the central axis of the gas outlet 12 is 30°, denoted as α. The 30° angle design means that the central axis of the gas outlet is referenced to the central axis of the valve body 1, and at any position within 360°, the angle between the central axis of the valve body 1 and the central axis of the gas outlet 12 is 30°. This design of the highly compatible piezoelectric ignition gas valve provides greater flexibility for pipeline connection and maintenance operations, facilitating pipeline installation, disassembly, and maintenance, and reducing operational difficulty. In terms of adapting to complex layouts, for gas systems requiring multi-directional connections or complex spatial layouts, the 30° angle design better accommodates the needs of pipeline connections in different directions, improving the system's flexibility and adaptability. In addition, it reduces the fluid impact angle. During the gas flow process, the 30° angle can disperse the impact force of the fluid on the valve body 1 and the pipeline to a certain extent, reduce local stress concentration, and help extend the service life of the valve and pipeline. Of course, the angle between the central axis of the valve body 1 and the central axis of the gas outlet 12 is not limited to this. According to the requirements, the angle between them can also be 15°, 20°, 25°, 35°, 40° or 45°.

[0048] In summary, the embodiments of the present invention provide a highly compatible piezoelectric ignition gas valve, wherein the highly compatible piezoelectric ignition gas valve has the following advantages: I. Based on the valve body 1, valve core assembly 2, valve seat 3, piezoelectric ignition device 4, and ignition lever 6, improvements are made to the rotating shaft assembly 5, limiting structure 7, and spring 8. An integrally formed limiting structure 7, such as a limiting groove, is designed on the outward end of the rotating shaft assembly 5. During assembly, the spring 8 only needs to be fitted onto the outward end of the rotating shaft assembly 5 to make the rear end of the spring 8 form a mechanical limiting contact with the limiting structure 7, thus completing the fixation. This allows the ignition lever 6 to slide stably on the outward end of the rotating shaft assembly 5. Compared with the traditional design, this design eliminates the need for additional fixing parts and only requires an integral molding process to manufacture the rotating shaft 511 and the limiting structure 7, reducing the number of parts, simplifying the assembly process, reducing the difficulty of operation and assembly, and shortening the assembly time.

[0049] Second, the valve seat 3 can switch positions relative to the valve body 1 in both directions, allowing it to connect to the valve body 1. This enables flexible adjustment of the relative positions of the piezoelectric ignition device 4 and the gas inlet 11. Given the proximity of the gas inlet 11 to the gas pipeline, the positional relationship between the piezoelectric ignition device 4 and the gas pipeline can be switched more flexibly. This allows the piezoelectric ignition gas valve to better adapt to the layout of the gas pipeline and be used in conjunction with other gas valves. Within the limited space of the gas pipeline, it avoids interference with components of other gas valves, facilitating installation and layout, and forming a more stable gas control system. It is particularly suitable for gas equipment in compact spaces, offering better compatibility and better meeting diverse installation needs.

[0050] The above description is only a preferred embodiment of this application. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of this application, and these improvements and substitutions should also be considered within the scope of protection of this application.

Claims

1. A highly compatible piezoelectric ignition gas valve, comprising a valve body, a valve core assembly, and a valve seat; the valve body has an air inlet on its upper side wall and an air outlet at its front end; characterized in that, The highly compatible piezoelectric ignition gas valve also includes: A piezoelectric ignition device is connected to the valve seat; the valve seat can be connected to the valve body by switching its position up and down relative to the valve body, so that the piezoelectric ignition device and the air inlet are located on the same side or opposite side; A rotating shaft assembly, which is rotatably connected to the valve seat and can move along the central axis of the valve body to connect with the valve core assembly, is used to open or close the communication between the air inlet and the air outlet. Ignition lever, which can be slidably fitted onto the rear end of the rotating shaft assembly; The limiting structure is integrally formed on the rear end of the rotating shaft assembly; A spring component is fitted onto the rear end of the rotating shaft assembly; the front end of the spring component is connected to the ignition lever. The rear end of the spring is connected to the limiting structure through a limiting contact method to prevent the spring from slipping out of the rotating shaft assembly.

2. The highly compatible piezoelectric ignition gas valve according to claim 1, characterized in that, The air inlet is located on the upper end of the side wall of the valve body; the vertical distance between the center of the air inlet and the central axis of the valve body is 18-19mm; The distance between the central axis of the air inlet and the rear end face of the valve seat is 30-31 mm.

3. The highly compatible piezoelectric ignition gas valve according to claim 1, characterized in that, The rotating shaft assembly includes an ignition rotating shaft and a return spring; the front end of the return spring is connected to the rear end of the valve core assembly, and the rear end of the return spring is sleeved on the front end of the ignition rotating shaft. The ignition shaft has a shaft body extending out of the valve seat; the ignition lever is fitted onto the shaft body; the limiting structure is integrally formed on the outer wall of the shaft body; the spring is fitted onto the shaft body; the front end of the spring is connected to the ignition lever; the rear end of the spring is connected to the limiting structure through a limiting contact method to prevent the spring from slipping out of the shaft body.

4. The highly compatible piezoelectric ignition gas valve according to claim 3, characterized in that, The limiting structure is a limiting slot.

5. The highly compatible piezoelectric ignition gas valve according to claim 4, characterized in that, The spring is a conical spring; the wide end of the spring is in contact with the ignition lever; the narrow end of the spring is limited and inserted into the limiting groove and abuts against the rear wall of the limiting groove to prevent the spring from sliding out from the rear end of the rotating shaft.

6. The highly compatible piezoelectric ignition gas valve according to claim 3, characterized in that, The side wall of the rotating shaft has a first notch positioning groove; the first notch positioning groove has a first limiting groove bottom surface for restricting the rotation of the ignition trigger relative to the ignition rotating shaft; the side wall of the rotating shaft also has a second notch positioning groove extending from the rear end of the rotating shaft towards the rear end of the first notch positioning groove after removing material; the second notch positioning groove has a second limiting groove bottom surface; The distance between the bottom surface of the first limiting groove and the central axis of the ignition shaft is greater than the distance between the bottom surface of the second limiting groove and the central axis of the ignition shaft. Both the first notch positioning groove and the second notch positioning groove are groove structures in the shape of an inverted L.

7. The highly compatible piezoelectric ignition gas valve according to claim 3, characterized in that, The valve core assembly includes a valve core, a push rod, a first sealing ring, a second sealing ring, a top pressure spring, and a compression washer; the valve body has a valve core cavity that communicates with the air inlet and the air outlet respectively; the valve core is rotatably adapted and installed in the valve core cavity; an ignition pipe is connected to the side wall of the valve body; the valve core has a first air guide cavity that communicates with the air inlet and the air outlet respectively, a second air guide cavity that communicates with the rear end of the first air guide cavity, a guide slide cavity that communicates with the rear end of the second air guide cavity, and an air outlet that communicates with the second air guide cavity and can be connected to the ignition pipe; The rear end of the push rod can move sequentially through the first air guide cavity, the second air guide cavity, and the guide slide cavity; the front end of the push rod has a plug located in the first air guide cavity and used to open or close the front end of the second air guide cavity. The first sealing ring is adapted to be fitted on the plug head; the second sealing ring is adapted to be fitted on the top rod and is located inside the front end of the guide cavity; The top pressure spring is sleeved on the rear end of the top rod; the front end of the top pressure spring is connected to the valve body through a compression washer, and the rear end of the top pressure spring is connected to the top rod. The front end of the ignition shaft has a pressing insert; the pressing insert can be movably embedded in the guide slide cavity and presses the push rod to move forward.

8. The highly compatible piezoelectric ignition gas valve according to claim 7, characterized in that, The valve body has a guide groove that is opened along its central axis, communicates with the guide slide cavity, and is adapted to be engaged with the top pressure insert; the top pressure insert can move forward in the guide groove to press the top rod forward.

9. The highly compatible piezoelectric ignition gas valve according to claim 7, characterized in that, The piezoelectric ignition device includes a mounting housing, a mounting cover, a hammer, an electronic igniter, and an ignition needle; The mounting housing is connected to the valve seat and is located on the same side or opposite side as the air inlet; the valve seat and the mounting housing are integrally formed. The electronic igniter is fitted into the mounting housing; one end of the hammer is connected to the electronic igniter; the mounting housing has an opening for one end of the ignition lever to extend into the other end to push the hammer when rotating with the shaft; the mounting cover is fitted onto the mounting housing; the ignition needle is near the gas outlet of the ignition line and is electrically connected to the electronic igniter.

10. The highly compatible piezoelectric ignition gas valve according to claim 1, characterized in that, The angle between the central axis of the valve body and the central axis of the air outlet is 0° or 30°.

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