Piezoelectric ignition valve

Abstract

The piezoelectric ignition valve can stably and reliably drive the firing pin to ignite. The piezoelectric ignition valve comprises a valve body, a valve element and a piezoelectric ignition assembly, the valve element and the piezoelectric ignition assembly are both arranged in the valve body, a driving lever assembly matched with the piezoelectric ignition assembly is arranged on the valve element, an air inlet and a nozzle are formed in the valve body, a communicating hole is formed in the valve element, and when the communicating hole is matched with the air inlet, the communicating hole is communicated with the nozzle. The poking rod assembly comprises a first poking piece ring and a second poking piece ring which are sequentially arranged on the valve rod part and the gas guide part of the valve element in a sleeving mode, a first spring is arranged between the first poking piece ring and the second poking piece ring, the piezoelectric ignition assembly comprises a firing pin and piezoelectric ceramics, the firing pin is provided with a poking rod and a second spring, and the second poking piece ring is matched with the side face of the poking rod. The first shifting piece ring is matched with the top of the shifting rod, and when the valve rod part is pressed, the first spring is compressed through the first shifting piece ring, and meanwhile the first shifting piece ring is matched with the second shifting piece ring to limit the shifting rod. The stove ignition device is applied to the technical field of stove ignition.

Description

Technical Field

[0001] The utility model is applied to the technical field of stove ignition, and particularly relates to a piezoelectric ignition valve. Background Art

[0002] Today's barbecue grill gas valves must be used in conjunction with an ignition device. The ignition device provides the high temperature required for gas ignition, igniting the gas output through the gas valve, thus completing the ignition process of the barbecue grill. Traditional gas valves and ignition devices are usually independent of each other, requiring procurement and adaptation, and connecting pipes and installation between the two, which is costly and inefficient. Furthermore, because the ignition device is provided by another supplier, when problems arise in the barbecue grill's ignition process, users often cannot accurately distinguish whether the problem lies with the gas valve or the ignition device, causing problems in subsequent maintenance and warranty procedures.

[0003] Currently, there are valve structures on the market that combine gas valves and ignition devices, such as the Chinese patent with announcement number CN221610725U, which discloses a piezoelectric dual ignition mechanism and gas valve. Specifically, it uses a double-paddle structure to drive the striker to collide with the piezoelectric ceramic to generate the arc required for ignition. In this solution, although the double-paddle structure can achieve the effect of two ignitions, when the rotation speed is too fast, the double-paddle structure will continuously move the striker, which may cause it to get stuck. On the other hand, when moving quickly, only the second paddle may be able to achieve the function of moving the striker to ignite. Conventional single-paddle structures have the problem of single ignition failure. If a valve structure that avoids the problems of the above two structures and achieves stable and reliable driving of the striker for ignition can be provided, the installation efficiency of the barbecue grill can be greatly improved and the maintenance cost can be reduced. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a piezoelectric ignition valve which can stably and reliably drive a striker to ignite.

[0005] The technical solution adopted by the present utility model is as follows: The present utility model includes a valve body, a valve core, and a piezoelectric ignition assembly. The valve core and the piezoelectric ignition assembly are both arranged inside the valve body. A lever assembly cooperating with the piezoelectric ignition assembly is arranged on the valve core. An air inlet and a spray port are arranged on the valve body. A communication hole is arranged on the valve core. When the communication hole cooperates with the air inlet, the air inlet is communicated with the spray port. The lever assembly includes a first flap ring and a second flap ring sequentially sleeved on the valve stem part and the air guide part of the valve core. A first spring is arranged between the first flap ring and the second flap ring. The piezoelectric ignition assembly includes a firing pin and a piezoelectric ceramic. A lever and a second spring are arranged on the firing pin. The second flap ring cooperates with the side surface of the lever, and the first flap ring cooperates with the top of the lever. When the valve stem part is pressed, the first spring is compressed through the first flap ring, and at the same time, it cooperates with the second flap ring to limit the lever.

[0006] As can be seen from the above solution, by arranging the cooperation between the first flap ring and the second flap ring, the lever of the firing pin is limited, so as to stably and reliably drive the firing pin to compress the second spring, and at the same time ensure that the lever does not disengage during the energy storage process, thereby ensuring that the ignition operation can be stably executed. When the valve stem part is rotated, the air guide part is driven to rotate, so that the air inlet is communicated with the spray port while igniting. The high temperature generated by the piezoelectric ceramic ignites the gas, and the ignition action is completed. The gas valve and the ignition device are integrated into one, so that the ignition function and the gas switch can be integrated, which is convenient for the installation and production of the equipment, and also convenient for later maintenance, and there is no need for adaptation between the ignition assembly and the gas switch.

[0007] A preferred solution is that a clamping block is arranged on the valve stem part. The clamping block passes through the first flap ring. A connecting groove cooperating with the clamping block is arranged on the air guide part. The valve stem part drives the first flap ring and the air guide part to rotate synchronously through the clamping block.

[0008] A preferred solution is that flaps are arranged on both the first flap ring and the second flap ring. The flap on the second flap ring is provided with a first guiding surface, and the first guiding surface is located on one side of the flap in the rotation direction of closing the valve.

[0009] A preferred solution is that a second guiding surface cooperating with the first guiding surface is arranged on one side of the lever close to the piezoelectric ceramic.

[0010] A preferred solution is that a guiding cavity adapted to the firing pin is arranged inside the valve body. One end of the second spring is connected to the firing pin, and the other end of the second spring cooperates with the guiding cavity.

[0011] One preferred solution is that a chamfer is provided at the outer edge of the communication hole.

[0012] One preferred solution is that a limiting ring cooperating with the first flap ring is further provided in the valve body, and the limiting ring limits the rotation angle of the first flap ring. Description of the Drawings

[0013] Figure 1 is the first three-dimensional structure schematic diagram of the present utility model;

[0014] Figure 2 is the second three-dimensional structure schematic diagram of the present utility model;

[0015] Figure 3 is the exploded structure schematic diagram of the present utility model;

[0016] Figure 4 is the sectional view of the present utility model;

[0017] Figure 5 is the internal structure schematic diagram of the valve body;

[0018] Figure 6 is the structure schematic diagram of the lever assembly;

[0019] Figure 7 is the structure schematic diagram of the striker. Detailed Embodiments

[0020] As Figures 1 to 7As shown, in this embodiment, the utility model includes a valve body 1, a valve core and a piezoelectric ignition component. The valve core and the piezoelectric ignition component are both arranged in the valve body 1. The valve core is provided with a toggle component that cooperates with the piezoelectric ignition component. The valve body 1 is provided with an air inlet 2 and a nozzle 3. The valve core is provided with a connecting hole 4. When the connecting hole 4 cooperates with the air inlet 2, the air inlet 2 is connected to the nozzle 3. The toggle component includes a first paddle ring 7 that is sequentially sleeved on the valve stem 5 and the air guide 6 of the valve core. And a second paddle ring 8, a first spring 9 is provided between the first paddle ring 7 and the second paddle ring 8, the piezoelectric ignition assembly includes a striker 10 and a piezoelectric ceramic 11, a lever 12 and a second spring 13 are provided on the striker 10, the second paddle ring 8 cooperates with the side of the lever 12, the first paddle ring 7 cooperates with the top of the lever 12, and when the valve stem portion 5 is pressed, the first spring 9 is compressed by the first paddle ring 7, and at the same time cooperates with the second paddle ring 8 to limit the lever 12. The driving of the striker 10 is executed by the cooperation of the first paddle ring 7 and the second paddle ring 8 to ensure the movement stability of the structure during the accumulation period. The valve stem portion 5 and the air guide portion 6 rotate synchronously, thereby connecting the air inlet 2 and the nozzle 3 at the same time as ignition. After ignition, the gas entering from the air inlet 2 is heated and ignited to form a flame at the nozzle. As Figure 5 As shown, a slot 20 is further provided in the valve body 1 for limiting the first paddle ring 7. The first spring 9 is provided to drive the first paddle ring 7 to move toward the slot 20, so that the valve stem 5 is restricted from rotating when not pressed, thereby avoiding accidental rotation that causes ignition.

[0021] like Figure 6 As shown, in this embodiment, the valve stem 5 is provided with a snap block 14 that passes through the first shift ring 7. The gas guide 6 is provided with a connecting groove 15 that cooperates with the snap block 14. The valve stem 5 drives the first shift ring 7 and the gas guide 6 to rotate synchronously through the snap block 14. This ensures the synchronous movement of the first shift ring 7 and the second shift ring 8, ensures that the shift rod 12 can be limited, and achieves the effect of simultaneous ignition and ventilation, preventing gas leakage.

[0022] like Figure 6 As shown, in this embodiment, the first paddle ring 7 and the second paddle ring 8 are both provided with paddles 16. The paddles 16 on the second paddle ring 8 are provided with a first guide surface 17. The first guide surface 17 is located on the side of the paddle 16 in the direction of valve closing rotation. By providing the first guide surface 17, the second paddle ring 8 cooperates with the paddle rod 12 during the valve closing action and automatically avoids the paddle rod 12, thereby avoiding misfires. Figure 7As shown, a second guiding surface 18 that mates with the first guiding surface 17 is provided on the side of the lever 12 close to the piezoelectric ceramic 11. By providing the second guiding surface 18, the smooth progress of the avoidance action is further improved.

[0023] In this embodiment, a guiding cavity adapted to the firing pin 10 is provided in the valve body 1. One end of the second spring 13 is connected to the firing pin 10, and the other end of the second spring 13 mates with the guiding cavity. By providing the guiding cavity to limit the firing pin 10, the linear motion accuracy and stability of the firing pin 10 are ensured, and the success rate during the ignition action is guaranteed.

[0024] As Figure 6 shown, in this embodiment, a chamfer is provided on the outer edge of the communication hole 4. By providing the chamfer, the gas guiding portion 6 can smoothly control the gas flow rate during rotation, improving the stability and safety of ignition.

[0025] As Figure 3 shown, in this embodiment, a limiting ring 19 that mates with the first flap ring 7 is further provided in the valve body 1, and the limiting ring 19 limits the rotation angle of the first flap ring 7. By providing the limiting ring 19 to limit the rotation angle of the valve core, misoperation is avoided.

[0026] Although the embodiments of the present utility model are described with actual solutions, they do not constitute a limitation to the meaning of the present utility model. For those skilled in the art, modifications to its implementation solutions according to this specification and combinations with other solutions are obvious.

Claims

1. A piezoelectric ignition valve, comprising a valve body (1), a valve core, and a piezoelectric ignition assembly, wherein the valve core and the piezoelectric ignition assembly are both arranged in the valve body (1), the valve core is provided with a toggle assembly that cooperates with the piezoelectric ignition assembly, the valve body (1) is provided with an air inlet (2) and a nozzle (3), the valve core is provided with a connecting hole (4), and when the connecting hole (4) cooperates with the air inlet (2), the air inlet (2) and the nozzle (3) are connected, characterized in that: The toggle assembly comprises a first toggle ring (7) and a second toggle ring (8) which are sequentially sleeved on the valve stem portion (5) and the air guide portion (6) of the valve core, a first spring (9) being provided between the first toggle ring (7) and the second toggle ring (8), the piezoelectric ignition assembly comprises a striker (10) and a piezoelectric ceramic (11), a toggle rod (12) and a second spring (13) being provided on the striker (10), the second toggle ring (8) being matched with the side surface of the toggle rod (12), the first toggle ring (7) being matched with the top of the toggle rod (12), and when the valve stem portion (5) is pressed, the first spring (9) is compressed by the first toggle ring (7), and at the same time, the toggle rod (12) is limited by the first toggle ring (8).

2. The piezoelectric ignition valve according to claim 1, wherein: The valve stem portion (5) is provided with a bite block (14), the bite block (14) passes through the first paddle ring (7), and the air guide portion (6) is provided with a connecting groove (15) that cooperates with the bite block (14). The valve stem portion (5) drives the first paddle ring (7) and the air guide portion (6) to rotate synchronously through the bite block (14).

3. The piezoelectric ignition valve according to claim 1, wherein: The first paddle ring (7) and the second paddle ring (8) are both provided with paddles (16), and the paddles (16) on the second paddle ring (8) are provided with first guide surfaces (17), and the first guide surfaces (17) are located on one side of the paddle (16) in the direction of rotation for closing the valve.

4. The piezoelectric ignition valve according to claim 3, characterized in that: A second guide surface (18) that cooperates with the first guide surface (17) is provided on a side of the shifting rod (12) close to the piezoelectric ceramic (11).

5. The piezoelectric ignition valve according to claim 1, wherein: A guide cavity adapted to the striker (10) is provided in the valve body (1), one end of the second spring (13) is connected to the striker (10), and the other end of the second spring (13) is adapted to the guide cavity.

6. The piezoelectric ignition valve according to claim 1, characterized in that: The outer edge of the communicating hole (4) is provided with a chamfer.

7. The piezoelectric ignition valve according to claim 1, characterized in that: A limiting ring (19) cooperating with the first shift ring (7) is further provided in the valve body (1), and the limiting ring (19) limits the rotation angle of the first shift ring (7).

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