Gas valve and stove

Abstract

The utility model relates to a gas valve and a stove. The gas valve comprises a valve element and a shifting block which are assembled in a matched mode, and the shifting block is arranged on the circumferential outer side of a valve handle of the valve element in a sleeving mode. An assembling notch penetrating in the radial direction is formed in a valve handle of the valve element, and the shifting block is provided with a protruding block connected to the assembling notch in a clamped mode. According to the gas valve, the structural characteristic that the shifting block is matched with the valve handle is optimized, the flat position milling machining procedure of the valve element is simplified, the overall manufacturing efficiency is better improved, and the economic efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of gas valve technology, and in particular to a gas valve and a stove. Background Technology

[0002] A piezoelectric ignition gas valve is a gas valve that uses the piezoelectric effect to achieve ignition, and is mainly used in gas appliances such as gas stoves. Specifically, in a piezoelectric ignition gas valve, a toggle block (a component that triggers the ignition device inside the valve seat when the valve core rotates) is used for ignition.

[0003] In practical use, it has been found that the mating structure between the lever and the valve core typically requires milling a flat section on the valve stem of the valve core to accommodate the lever, thus forming a waist-shaped or racetrack-shaped structure. The straight section between the two arc-shaped segments in this waist-shaped or racetrack-shaped structure is the flat section. However, in actual production, it has been found that this additional milling process reduces overall manufacturing efficiency, indicating room for improvement. Utility Model Content

[0004] In order to overcome at least one of the defects of the prior art, according to one aspect of the present invention, a gas valve is provided, including a valve core and a lever that are fitted together, the lever being sleeved on the circumferential outer side of the valve handle of the valve core; the valve handle of the valve core is provided with a radially penetrating assembly notch, and the lever is provided with a protrusion that engages with the assembly notch.

[0005] In one embodiment of this application, the assembly notch extends radially to the two opposite outer sides of the valve handle of the valve core, and a pair of protrusions are provided and symmetrically arranged on the push block, with the two protrusions engaging together in the same assembly notch.

[0006] In one embodiment of this application, the valve stem of the valve core is columnar, and the lever is annular.

[0007] In one embodiment of this application, a rotating shaft and a limiting block are included, the rotating shaft and the limiting block being integrally formed.

[0008] In one embodiment of this application, the valve stem of the valve core is provided with an assembly notch at the end facing the valve core, the assembly notch extends to the top surface of the valve stem facing the rotating shaft, and the end of the rotating shaft facing the valve core is provided with a locking protrusion that engages with the assembly notch.

[0009] In one embodiment of this application, a valve seat is further included. One end of the rotating shaft with a limiting block is disposed inside the valve seat and the other end extends out of the valve seat. The valve core and the toggle block are disposed inside the valve seat. A limiting groove is provided on the inner wall of the valve seat to limit the limiting block. The rotating shaft is used to move closer to or further away from the valve core so that the limiting block is correspondingly disengaged from or engaged with the limiting groove.

[0010] In one embodiment of this application, a reset elastic element is provided between the limiting block and the toggle block.

[0011] In one embodiment of this application, the reset elastic element is a spring.

[0012] In one embodiment of this application, the limiting block includes an integrally formed limiting body and a limiting block. The limiting body is located on the circumferential outer side of the rotating shaft, and the limiting block is located on the circumferential outer side of the limiting body and is used to limit the engagement with the limiting groove on the inner wall of the valve seat.

[0013] According to another aspect of this application, a stove is provided, including the aforementioned gas valve, wherein the gas valve is a piezoelectric ignition gas valve.

[0014] In summary, the gas valve and stove provided by this utility model have the following technical effects:

[0015] This gas valve optimizes the structural features of the lever and valve handle, simplifying the milling process of the valve core, thereby improving overall manufacturing efficiency and economic efficiency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the assembly structure of the valve core and the lever in the gas valve according to an embodiment of the present utility model;

[0017] Figure 2 This is a top-view exploded view of the valve core and the toggle block in the gas valve of this utility model embodiment;

[0018] Figure 3 This is an exploded axial view of the valve core and the toggle block in the gas valve according to an embodiment of the present invention.

[0019] Figure 4 This is a cross-sectional view of the valve core and the toggle block in the gas valve of this utility model embodiment;

[0020] Figure 5 This is a schematic diagram of the gas valve according to an embodiment of the present utility model;

[0021] Figure 6 This is a schematic diagram of the assembly structure of the rotating shaft and the limiting block in the gas valve according to an embodiment of the present utility model;

[0022] Figure 7 This is a schematic diagram of the assembly structure of the rotating shaft, limiting block, valve core, toggle block, and reset elastic element in the gas valve according to an embodiment of the present utility model.

[0023] Figure 8 This is a cross-sectional view of the rotating shaft, limiting block, valve core, toggle block, and reset elastic element in the gas valve of this utility model embodiment;

[0024] Attached Figures: 1-Valve Core, 11-Valve Handle, 12-Assembly Notch, 13-Ventilation Hole, 2-Pulling Block, 21-Protrusion, 22-Protrusion, 3-Rotating Shaft, 31-Clamping Protrusion, 4-Limiting Block, 41-Limiting Body, 42-Limiting Clamping Block, 5-Valve Seat, 51-Limiting Groove, 52-Ventilation Channel, 6-Reset Elastic Component, 71-Hammer, 72-Ignition Spring, 73-Piezoelectric Ceramic. Detailed Implementation

[0025] To better understand and implement this invention, the technical solutions in the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings.

[0026] In the description of this utility model, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" 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 simplifying the description, 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 limitations on this utility model.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0028] An embodiment of this utility model discloses a gas valve.

[0029] Specifically, this gas valve can be classified as a piezoelectric ignition gas valve. It should be noted that a piezoelectric ignition gas valve is a gas valve that utilizes the piezoelectric effect to achieve ignition, primarily used in gas appliances such as gas stoves. Furthermore, in a piezoelectric ignition gas valve, ignition is achieved using a trigger (a component that activates the ignition device within the valve seat when the valve core rotates).

[0030] In practical use, it has been found that the mating structure between the lever and the valve core typically requires milling a flat section on the valve stem of the valve core to accommodate the lever, so that the valve stem forms a waist-shaped or racetrack-shaped structure. The straight section between the two arc-shaped segments in the waist-shaped or racetrack-shaped structure is the flat section structure. However, in actual production, it has been found that the additional milling process for the flat section means a reduction in overall manufacturing efficiency.

[0031] Therefore, this gas valve addresses this issue by optimizing the structural features of the lever and valve handle, simplifying the milling process of the valve core, thereby improving overall manufacturing efficiency and economic efficiency.

[0032] In response, the following is a combination of Figures 1-8 The following describes a gas valve according to an embodiment of the present invention.

[0033] like Figures 1-4 Specifically, the gas valve includes a valve core 1 and a lever 2 that are fitted together. The lever 2 is sleeved on the circumferential outer side of the valve handle 11 of the valve core 1. The valve handle 11 of the valve core 1 is provided with a radially penetrating assembly notch 12, and the lever 2 is provided with a protrusion 21 that engages with the assembly notch 12.

[0034] The working principle of this gas valve is as follows:

[0035] When the gas valve is not open, the valve core 1 is in the closed position, preventing gas flow. At this time, the lever 2 is fitted around the circumferential outside of the valve handle 11 of the valve core 1, and the protrusion 21 of the lever 2 is engaged with the assembly notch 12 of the valve handle 11 of the valve core 1. The entire device is in a static state, and the gas is sealed in the corresponding pipe or chamber.

[0036] When the user turns the valve core 1 to open the gas valve, the valve handle 11 rotates accordingly. Since the lever 2 is fitted around the outside of the valve handle 11, and the protrusion 21 of the lever 2 is engaged in the assembly notch 12, the rotation of the valve handle 11 will drive the lever 2 to rotate as well. During the rotation of the lever 2 with the valve core 1, the lever 2 will trigger the ignition device in the valve seat 5 according to the designed movement trajectory. This is because the lever 2 and the ignition device have a specific spatial relationship, and the movement of the lever 2 can cause the piezoelectric ceramic 73 and other components in the ignition device to move.

[0037] For example, the protrusion 22 on the outer circumferential side of the lever 2 pushes the hammer 71 in the ignition device. The hammer 71 compresses the ignition spring 72. When it rotates to a certain position, the hammer 71 releases, striking the piezoelectric ceramic 73 to generate high voltage electricity. This electricity is conducted through the wire to the ignition needle to generate an electric spark, thus achieving ignition. At the same time, as the valve core 1 rotates, the vent hole 13 on the valve core 1 gradually aligns with the vent channel 52 in the valve seat 5. Gas begins to flow from the storage chamber through the vent channel 52 to components that require gas, such as the burner. When the gas encounters the already ignited ignition area during its flow, it begins to burn, thus achieving normal gas supply and ignition.

[0038] This structural design eliminates the need for milling a flat section on the valve stem 11 of the valve core 1 to accommodate the lever 2, a previously required machining step. However, this invention avoids this milling by providing a radially penetrating assembly notch 12 at the valve stem 11 of the valve core 1, with the lever 2 having a protrusion 21 that engages with the assembly notch 12. For example, in traditional machining, milling the flat section requires a specific milling machine, adjusting the position of the tool and workpiece, and performing cutting operations—a process involving complex machining parameter settings and operational steps. Now, this step is eliminated, and the assembly notch 12 is directly machined, making the machining process simpler and more direct. Furthermore, by reducing one machining step, the entire gas valve production cycle can be effectively shortened. This advantage is even more pronounced in mass production, significantly improving production efficiency.

[0039] Furthermore, reducing processing steps means reducing the usage time of processing equipment, labor costs, and energy consumption. For example, the milling of flat parts requires the use of milling machines, which involves equipment depreciation and maintenance costs, as well as operator hourly wages. Eliminating this step reduces these costs accordingly. At the same time, the shorter production cycle allows for the production of more gas valves in the same amount of time, thereby improving the company's economic efficiency.

[0040] Specifically, the assembly notch 12 extends radially to the two opposite outer sides of the valve handle 11 of the valve core 1, and a pair of protrusions 21 are provided and symmetrically arranged in the lever block 2, with the two protrusions 21 engaging together in the same assembly notch 12.

[0041] This configuration, with the assembly notch 12 extending to the two opposite outer sides of the valve handle 11 and featuring a pair of symmetrical protrusions 21, makes the connection between the lever 2 and the valve core 1 more stable. During the rotation of the valve core 1, the two protrusions 21 can evenly distribute the force on the lever 2, preventing the lever 2 from loosening or deviating from its fit with the valve core 1 due to excessive force on one side. For example, during frequent opening and closing of the gas valve, if there is only one protrusion 21 or an asymmetrical connection structure, the lever 2 may shift due to long-term uneven force, affecting the accuracy of ignition and the normal use of the gas valve. The symmetrical structure of this application can effectively resist this situation.

[0042] Specifically, the valve handle 11 of the valve core 1 is cylindrical, and the lever 2 is annular. This combination of cylindrical and annular shapes allows for a good spatial fit; the annular lever 2 fits snugly around the outer circumference of the cylindrical valve handle 11, ensuring effective cooperation between the lever 2 and the valve handle 11 while making full use of the surrounding space. Compared to other shape combinations, this structure is more compact, reducing unnecessary space occupation and making the overall structure of the gas valve simpler. For example, in appliances such as gas stoves, where internal space is limited, this compact structure helps to rationally arrange other components, such as gas pipes and ignition circuits, within a limited space.

[0043] In existing technology, the rotation of the valve core 1 is driven by a combination structure of a rotating shaft 3 and a limiting block 4. The rotating shaft 3 and the limiting block 4 are typically manufactured separately as two separate parts, which are then assembled together. However, this undoubtedly increases the processing complexity. Furthermore, because the rotating shaft 3 and the limiting block 4 need to be assembled, this assembly process is prone to large tolerances, leading to numerous problems.

[0044] In response to this problem, the gas valve needle has optimized the structural features of the cooperation between the rotating shaft 3 and the limiting block 4 to significantly reduce the limiting tolerance caused by the combined assembly of the rotating shaft 3 and the limiting block 4.

[0045] like Figures 5-8 Specifically, this gas valve includes a rotating shaft 3 and a limiting block 4, which are integrally formed. Because the rotating shaft 3 and the limiting block 4 are integrally formed, the large limiting tolerance problem caused by the accumulation of manufacturing tolerances and assembly errors of various components in traditional assembly methods is avoided. At the same time, the integrally formed structure eliminates the problem of loose connections that may occur in traditional assembly structures. During long-term operation of the gas valve, especially under conditions of frequent opening and closing or vibration and pressure fluctuations, the traditionally assembled rotating shaft 3 and limiting block 4 may experience limiting failure or abnormal movement due to wear and loosening of the connection points. The integrally formed structure has stronger overall integrity, can better withstand these external forces, ensures the stable operation of the gas valve, and reduces the probability of safety risks caused by component failures, such as gas leaks.

[0046] Furthermore, it eliminates the need to manufacture the rotating shaft 3 and the limiting block 4 separately before performing complex assembly processes, reducing clamping, positioning, and debugging steps in the machining process, as well as reducing the number of parts and simplifying the machining process. This not only shortens the production cycle and improves production efficiency but also reduces processing costs. At the same time, by reducing the assembly process, the possibility of defective products due to improper assembly is also reduced, improving the product qualification rate and quality stability.

[0047] Specifically, the valve handle 11 of the valve core 1 is provided with an assembly notch 12 facing the end of the valve core 1. The assembly notch 12 extends to the top surface of the valve handle 11 facing the rotating shaft 3. The rotating shaft 3 is provided with a locking protrusion 31 facing the end of the valve core 1, which engages with the assembly notch 12.

[0048] When the rotating shaft 3 is driven to rotate by an external force, the locking protrusion 31 at the end of the rotating shaft 3 will drive the valve handle 11 of the valve core 1, which is locked to it, to rotate together. Because of the tight locking relationship between the locking protrusion 31 and the assembly notch 12, torque can be effectively transmitted, ensuring that the valve core 1 and the rotating shaft 3 move synchronously. Therefore, the locking structure of the locking protrusion 31 and the assembly notch 12 provides a stable connection method that can withstand greater torque and axial force. During the operation of the gas valve, especially in high-pressure gas environments or when the valve is frequently opened and closed, it can effectively prevent loosening or separation between the valve core 1 and the rotating shaft 3, ensuring the normal operation and safety of the gas valve. At the same time, during installation, the structure of the assembly notch 12 and the locking protrusion 31 makes the assembly of the rotating shaft 3 and the valve core 1 relatively simple; operators can complete the connection visually and with simple operation, without the need for complex positioning tools or additional connecting parts. This connection method also facilitates disassembly and reinstallation during maintenance and repair.

[0049] More importantly, the locking protrusion 31 on the rotating shaft 3 also utilizes the assembly notch 12 on the valve handle 11 of the valve core 1, so there is no need to set up a separate locking slot, which simplifies the structure of the valve core 1 and is more conducive to production.

[0050] Specifically, this gas valve also includes a valve seat 5, a rotating shaft 3 with a limiting block 4 at one end disposed within the valve seat 5 and the other end extending out of the valve seat 5, a valve core 1 and a lever 2 disposed within the valve seat 5; a limiting groove 51 is provided on the inner wall of the valve seat 5 to limit the movement of the limiting block 4; the rotating shaft 3 moves closer to or further away from the valve core 1 to allow the limiting block 4 to disengage from or engage with the limiting groove 51. It should be noted that when the rotating shaft 3 needs to be rotated, it moves closer to the valve core 1 to allow the limiting block 4 to disengage from the limiting groove 51; when the rotation of the rotating shaft 3 needs to be restricted, it moves further away from the valve core 1 to allow the limiting block 4 to engage with the limiting groove 51.

[0051] When it is necessary to rotate the shaft 3 to adjust the state of the gas valve (such as opening or adjusting the gas flow), the shaft 3 is moved closer to the valve core 1 by an external drive device (such as a manual knob or an electric actuator). This action causes the limiting block 4 at one end of the shaft 3 to disengage from the limiting groove 51 on the inner wall of the valve seat 5. Since the limiting block 4 is no longer restricted by the limiting groove 51, the shaft 3 can rotate freely. Furthermore, the rotation of the shaft 3 drives the valve core 1 to rotate synchronously through the locking structure (locking protrusion 31 and assembly notch 12) with the valve handle 11 described earlier.

[0052] After the operation of the gas valve is completed (such as adjusting the gas valve to the required flow rate or closing the gas valve), it is necessary to limit the rotation of the rotating shaft 3 to maintain the current state of the gas valve. At this time, the rotating shaft 3 is moved away from the valve core 1 by an external drive. In this way, the limiting block 4 on the rotating shaft 3 will move towards the limiting groove 51 on the inner wall of the valve seat 5 and finally engage with the limiting groove 51.

[0053] This configuration, with the matching structure of the limiting block 4 and the limiting groove 51, enables precise control of the rotation of the shaft 3. By controlling the movement of the limiting block 4 in and out of the limiting groove 51, free movement is allowed when rotation of the shaft 3 is needed, and precise limiting is applied when rotation is not required. For gas valves, this allows for accurate control of the opening and closing of the valve core 1, as well as various flow regulation states, improving the accuracy of gas flow control and meeting different usage scenarios and needs. For example, when the gas valve is closed, the limiting block 4 engaging with the limiting groove 51 prevents the shaft 3 from rotating due to unexpected external interference (such as vibration or collision), avoiding accidental opening of the gas valve and effectively preventing gas leakage. In situations with high safety requirements, such as home kitchens or industrial gas systems, this safety mechanism can significantly reduce safety risks.

[0054] Specifically, a reset elastic element 6 is provided between the limit block 4 and the toggle block 2. The reset elastic element 6 can be a spring. Alternatively, it can be an elastic rubber component, an elastic sheet, or other elastic structure.

[0055] When the rotating shaft 3 needs to be rotated to operate the gas valve, the external driving force pushes the rotating shaft 3 towards the valve core 1, causing the limiting block 4 to disengage from the limiting groove 51 on the inner wall of the valve seat 5. During this process, the reset elastic element 6 (spring) is compressed; and when the operation is completed and the external driving force is removed, the spring's own elastic restoring force will push the limiting block 4 away from the valve core 1. At this time, the limiting block 4 will reset towards the limiting groove 51 on the inner wall of the valve seat 5.

[0056] This design allows the gas valve to automatically reset the limit block 4 into the limit groove 51 after operation, eliminating the need for additional manual operation to restore the limit state of the rotating shaft 3. This not only improves operational convenience but also effectively prevents the gas valve from being in an unsafe state (such as limit failure) due to the operator forgetting to reset the rotating shaft 3.

[0057] Specifically, the limiting block 4 includes an integrally formed limiting body 41 and a limiting block 42. The limiting body 41 is located on the circumferential outer side of the rotating shaft 3, and the limiting block 42 is located on the circumferential outer side of the limiting body 41 and is used to limit and cooperate with the limiting groove 51 on the inner wall of the valve seat 5. This arrangement of the limiting body 41 and the limiting block 42 is more efficient in terms of space utilization. The limiting body 41 is positioned around the circumferential outer side of the rotating shaft 3, which does not occupy too much axial space and is conducive to the compact design of the internal structure of the gas valve. At the same time, the limiting block 42, located on the circumferential outer side of the limiting body 41, can effectively cooperate with the limiting groove 51 on the inner wall of the valve seat 5, achieving efficient limiting function without increasing additional space requirements.

[0058] An embodiment of this utility model discloses a stove, including the gas valve described above.

[0059] Specifically, this cooktop can be categorized as an oven, grill, or similar product. Therefore, this cooktop also optimizes the structural features of the mating mechanism between the lever 2 and the valve handle 11, simplifying the milling process for the valve core 1 to improve overall manufacturing efficiency and economic efficiency. Simultaneously, it optimizes the structural features of the mating mechanism between the rotating shaft 3 and the limiting block 4, significantly reducing the limiting tolerances caused by the assembly of the rotating shaft 3 and the limiting block 4; furthermore, it reduces the number of assembly parts in the entire gas valve and simplifies the entire manufacturing process.

[0060] The technical means disclosed in this utility model are not limited to those disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications are also considered within the scope of protection of this utility model.

Claims

1. A gas valve, characterized in that, It includes a valve core (1) and a lever (2) that are fitted together. The lever (2) is sleeved on the circumferential outer side of the valve handle (11) of the valve core (1). The valve handle (11) of the valve core (1) is provided with a radially penetrating assembly notch (12). The lever (2) is provided with a protrusion (21) that engages with the assembly notch (12).

2. A gas valve according to claim 1, characterized in that, The assembly notch (12) extends radially to the two opposite outer sides of the valve handle (11) of the valve core (1). A pair of protrusions (21) are provided and symmetrically arranged on the lever (2). The two protrusions (21) are engaged together in the same assembly notch (12).

3. A gas valve according to claim 1, characterized in that, The valve handle (11) of the valve core (1) is columnar, and the lever (2) is annular.

4. A gas valve according to any one of claims 1-3, characterized in that, It includes a rotating shaft (3) and a limiting block (4), which are integrally formed.

5. A gas valve according to claim 4, characterized in that, The valve handle (11) of the valve core (1) has an assembly notch (12) at the end facing the valve core (1), the assembly notch (12) extends to the top surface of the valve handle (11) facing the rotating shaft (3), and the end of the rotating shaft (3) facing the valve core (1) has a locking protrusion (31) that engages with the assembly notch (12).

6. A gas valve according to claim 4, characterized in that, It also includes a valve seat (5), and the rotating shaft (3) has a limiting block (4) at one end disposed inside the valve seat (5) and the other end extending out of the valve seat (5). The valve core (1) and the toggle block (2) are disposed inside the valve seat (5). A limiting groove (51) is provided on the inner wall of the valve seat (5) to limit the limiting block (4). The rotating shaft (3) is used to move closer to or further away from the valve core (1) so that the limiting block (4) is correspondingly disengaged from or engaged with the limiting groove (51).

7. A gas valve according to claim 6, characterized in that, A reset elastic element (6) is provided between the limiting block (4) and the toggle block (2).

8. A gas valve according to claim 7, characterized in that, The reset elastic element (6) is a spring.

9. A gas valve according to claim 6, characterized in that, The limiting block (4) includes an integrally formed limiting body (41) and a limiting block (42). The limiting body (41) is located on the outer circumferential side of the rotating shaft (3), and the limiting block (42) is located on the outer circumferential side of the limiting body (41) and is used to limit the engagement with the limiting groove (51) on the inner wall of the valve seat (5).

10. A stove, characterized in that, Includes a gas valve according to any one of claims 1-9, wherein the gas valve is a piezoelectric ignition gas valve.

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