Gas stove ignition valve

Abstract

The present invention provides an ignition valve for a gas stove, belonging to the technical field of gas stoves. It solves the problem of poor sealing performance. It comprises a valve body provided with an air inlet channel, an ignition channel, and a combustion channel, and an operating lever assembly rotatably connected to the valve body. The valve body comprises a transition chamber connected to the air inlet channel, a sealing surface formed on the top wall of the transition chamber, a first groove connected to the ignition channel with a notch extending through the sealing surface, and a second groove connected to the combustion channel with a notch extending through the sealing surface. The first and second grooves are arranged around the centerline of the operating lever assembly. The lower end of the operating lever assembly passes through the sealing surface and is circumferentially fixed with a metal valve disc having a harder surface than that located at the sealing surface. An elastic member is provided within the transition chamber to securely abut the metal valve disc against the sealing surface. The valve has the advantages of good sealing performance and reliable operation.

Description

Technical Field

[0001] The invention belongs to the technical field of gas stoves and relates to an ignition valve of a gas stove. Background Art

[0002] The ignition valve is provided in the gas stove. It is a manually operated valve that controls the gas supply and enables the gas stove to ignite. For example, the patent application number 201711415798.6 discloses a flow control valve, which includes a hollow valve body and a front end cover connected to the valve body. The outer surface of the valve body is provided with an axially staggered air inlet pipe, air outlet pipe and pilot gas pipe. A partition block is provided in the valve body to form a first accommodating cavity and a second accommodating cavity therein. A first through hole is provided on the partition block to connect the first accommodating cavity with the second accommodating cavity. The air inlet pipe is connected to the second accommodating cavity, and the air outlet pipe and the pilot gas pipe are respectively connected to the first accommodating cavity. A valve core is provided in the first accommodating cavity. An axial hole coaxial with the first through hole is provided at the rear end of the valve core. A pilot gas hole and an air outlet hole respectively connected to the axial hole are provided on the outer surface of the rear end of the valve core. When the valve core rotates in the first accommodating cavity, the pilot gas pipe and the pilot gas The holes are connected and the air outlet pipe is connected to the air outlet hole, the air inlet hole is strip-shaped and is opened horizontally on the outer surface of the valve core, the air outlet hole is composed of a first adjusting hole opened horizontally at an angle and a second adjusting hole opened horizontally and vertically, the first adjusting hole and the second adjusting hole are horizontally located on the same horizontal plane, the first adjusting hole, the second adjusting hole and the strip-shaped air inlet hole are staggered in the horizontal and axial directions of the valve core, an accommodating hole is axially opened at the front end of the valve core, a first notch connected to the accommodating hole is axially opened on the valve core, a rotating shaft that can move axially and passes through the front end cover is provided between the valve core and the front end cover, a stopper is protruded on the rotating shaft, the rotating shaft is inserted into the accommodating hole and the stopper can move in the first notch, when the stopper is located in the first notch, the air inlet pipe is in a connected state and the air outlet pipe is in a connected state or staggered state with the air outlet hole. In this flow control valve, the pilot gas circuit and the combustion gas circuit are respectively realized by two different gas supply channels, the pilot gas pipe and the gas outlet pipe. The pilot gas circuit is in front and the combustion gas circuit is in the back, and the two are operated separately. After the pilot gas circuit is ignited, it is responsible for igniting the combustion gas circuit, which improves the safety of the ignition process.

[0003] However, the above-mentioned flow control valve also has its shortcomings: as can be seen from the drawings in its specification, the valve core is a plug-type structure, and its outer surface has a taper. At the same time, the inner wall of the first accommodating chamber is also required to have the same taper as the outer surface of the valve core, and a seal is formed by the two conical surfaces abutting against each other. However, in actual processing, it is difficult to achieve the uniformity of the taper of the outer surface of the valve core and the inner wall of the first accommodating chamber, resulting in a gap. In particular, the processing of the tapered surface inside the valve body has relatively high requirements for the processing technology, resulting in the actual sealing effect being not ideal. Summary of the Invention

[0004] The purpose of the present invention is to solve the above problems existing in the prior art and to propose an ignition valve for a gas stove, which solves the problem of poor sealing effect.

[0005] The purpose of the present invention can be achieved through the following technical solutions:

[0006] The ignition valve of a gas stove includes a valve body provided with an air intake channel, an ignition channel and a combustion channel, and an operating rod assembly rotatably connected to the valve body and with the upper end extending out of the valve body. The valve body is provided with a transition chamber connected to the air intake channel, and is characterized in that the valve body has a sealing surface at the top wall of the transition chamber, the valve body is provided with a groove 1 connected to the ignition channel and with the notch passing through the sealing surface, and a groove 2 connected to the combustion channel and with the notch passing through the sealing surface. Groove 1 and groove 2 are distributed around the center line of the operating rod assembly, the lower end of the operating rod assembly passes through the sealing surface and is circumferentially fixed with a metal valve plate with a hardness greater than that of the sealing surface. An elastic member is provided in the transition chamber to make the metal valve plate tightly abut against the sealing surface. The ignition valve can switch to the state where groove 1 and groove 2 are closed at the same time, only groove 1 is opened, and groove 1 and groove 2 are opened at the same time as the metal valve plate rotates.

[0007] In the initial state, the metal valve disc, under the action of the elastic member, rests tightly against the sealing surface and is in a state where both grooves 1 and 2 are closed. When ignition is required, the user rotates the operating lever assembly to control the metal valve disc to open groove 1. After the gas enters the valve body through the air inlet channel, it can then pass through the transition chamber and groove 1 and into the ignition channel. The ignition channel ultimately supplies the gas to the inner ring of the gas stove, where it cooperates with the ignition device on the inner ring to ignite the gas, forming a long-lasting flame. After ignition is complete, the user continues to rotate the operating lever assembly in the same direction, at which point the metal valve disc gradually opens groove 2. A portion of the gas that has entered the valve body will enter the combustion channel through groove 2, and the combustion channel will eventually supply the gas to the outer ring of the gas stove, where it will be ignited by the long-lasting flame formed on the inner ring, resulting in combustion. By adjusting the opening of groove 2 by the metal valve disc, the flow rate in the combustion channel can be adjusted, thereby adjusting the size of the fire.

[0008] By providing a groove 1 connected to the ignition channel and a groove 2 connected to the combustion channel in the valve body, the groove 1 and the groove 2 simultaneously penetrate the sealing surface and are arranged around the center line of the operating lever assembly. As a result, the ignition valve of the gas stove can control the connection or disconnection between the air intake channel and the ignition channel, as well as the connection or disconnection between the air intake channel and the combustion channel, simply by rotating the metal valve disc. The planar sealing method of the metal valve disc and the sealing surface is easier to control in terms of fit. Both the metal valve disc and the sealing surface are easier to control in terms of flatness during processing, thereby greatly improving the sealing effect during use. Moreover, the hardness of the metal valve disc is greater than the hardness of the sealing surface. During the frequent rotation of the metal valve disc relative to the sealing surface, the sealing surface will be worn flatter by the metal valve disc, thereby improving the fit between the two and further improving the sealing effect.

[0009] In the above-mentioned ignition valve of the gas stove, a downwardly protruding boss is fixedly connected to the top wall of the transition chamber, and the sealing surface is the bottom surface of the boss.

[0010] In actual processing, the valve body is processed into a downwardly protruding boss fixedly connected to the top wall of the transition chamber. The sealing surface is the bottom surface of the boss. The area of ​​the sealing surface is smaller than the area of ​​the top wall of the transition chamber. During processing, it is easier to make the sealing surface smoother. On the one hand, this can ensure the initial fit between the metal valve disc and the sealing surface. At the same time, in subsequent use, the metal valve disc can be used to grind the sealing surface to make the fit between the two better, further improving the sealing effect.

[0011] In the above-mentioned ignition valve of the gas stove, a plurality of grooves three are further provided at the bottom of the boss, and groove one, groove two and groove three are distributed around the center line of the operating lever assembly at the same time, and groove one is adjacent to groove two.

[0012] By setting the three grooves, the solid part of the sealing surface is reduced, and the sealing surface can be more easily ground flat during the rotation of the metal valve plate relative to the boss, further improving the sealing effect.

[0013] In the above-mentioned ignition valve of the gas stove, the boss is circular, groove one, groove two and each groove three are in the shape of an arc window, and an arc-shaped notch is provided on the edge of the metal valve plate. The sum of the arcs of groove one and groove two is less than 180° and the arc of groove two is greater than that of groove one, and the arc of the arc notch is not less than the sum of the arcs of groove one and groove two.

[0014] Groove one and groove two are both in the shape of arc windows, and an arc-shaped notch is provided on the edge of the metal valve plate. The curvature of the arc-shaped notch is not less than the sum of the curvatures of groove one and groove two. This arrangement ensures that the metal valve plate can switch the ignition valve to three states: groove one and groove two are closed at the same time (at this time, the arc-shaped notch is staggered with groove one and groove two at the same time), only groove one is opened (at this time, the arc-shaped notch is staggered with groove two), and groove one and groove two are opened at the same time (at this time, the arc-shaped notch is opposite to groove one and groove two at the same time). Therefore, the ignition valve can be sealed by fitting the metal valve plate with the sealing surface.

[0015] In the above-mentioned ignition valve of the gas stove, the valve body includes a main body and a valve cover fixedly connected to the upper end of the main body by fasteners. The top of the main body has a downwardly concave recess, the transition cavity is surrounded by the inner wall of the recess and the bottom wall of the valve cover, the boss is integrally fixed to the bottom of the valve cover, and an annular sealing gasket is provided between the main body and the valve cover, and the mouth of the recess is located on the inner side of the sealing gasket.

[0016] During assembly, the lower end of the operating rod assembly is passed through the valve cover and the two are positioned. The metal valve disc is then sleeved over the lower end of the operating rod assembly. The elastic member is then placed into the recess and the valve cover is secured to the upper end of the main body. The inner wall of the recess and the bottom wall of the valve cover form a transition cavity, within which the boss and the metal valve disc are naturally located. The boss is integrally connected to the bottom of the valve cover, and the valve body is formed by the main body and valve cover being fixed together by fasteners. This allows for better control of the flatness of the sealing surface during machining, making it easier to grind the sealing surface more flat during the subsequent rotation of the metal valve disc relative to the boss to ensure a tight fit between the two and thus a good seal.

[0017] In the above-mentioned ignition valve of the gas stove, the metal valve plate is made of stainless steel, and the valve cover is made of aluminum.

[0018] The metal valve disc is made of stainless steel and the valve cover is made of aluminum, which means that the hardness of the metal valve disc is greater than the hardness of the boss, so that the ignition valve of the gas stove can utilize the rotation of the metal valve disc to grind the sealing surface more flat to ensure the sealing effect.

[0019] In the above-mentioned ignition valve of the gas stove, the elastic member includes a circular ring and several elastic connecting plates distributed along the circumferential direction. The lower end of the operating rod assembly passes through the center hole of the circular ring, the upper end of each elastic connecting plate is integrally connected to the edge of the circular ring, and the lower end of each elastic connecting plate rests on the inner wall of the recess.

[0020] During assembly, the elastic member is sleeved on the lower end of the operating rod assembly through the circular ring and rests on the metal valve plate. When the valve cover is fixedly connected to the main body to form the valve body, the lower ends of the elastic connecting plates of the elastic member rest on the inner wall of the recess, thereby generating an upward push pressure on the metal valve plate, so that the metal valve plate and the sealing surface are tightly attached together to form a seal.

[0021] In the above-mentioned ignition valve of the gas stove, a number of positioning blocks are fixedly connected to the inner wall of the recess along the circumferential direction, and a positioning slot is provided at the upper end of each positioning block. The lower end of each elastic connecting piece rests on the corresponding positioning block and is stuck in the positioning slot.

[0022] The lower end of each elastic connecting piece rests on the corresponding positioning block and is stuck in the positioning slot. In this way, when the user drives the metal valve piece to rotate through the operating lever assembly to perform ignition operations and adjust the fire size, the elastic part will not rotate with the metal valve piece under the action of friction. This can reduce the loss of the elastic part to ensure that the metal valve piece can always form a tight fit with the sealing surface under the action of the elastic part.

[0023] In the above-mentioned ignition valve of the gas stove, as another technical solution, the elastic member includes a support spring, and two ends of the support spring respectively abut against the metal valve plate and the bottom wall of the recess.

[0024] Compared with the prior art, the ignition valve of the gas stove is provided with a groove 1 connected to the ignition channel and a groove 2 connected to the combustion channel in the valve body. The groove 1 and the groove 2 penetrate the sealing surface at the same time, and the two are arranged around the center line of the operating lever assembly. Therefore, the connection or disconnection between the air intake channel and the ignition channel and the connection or disconnection between the air intake channel and the combustion channel can be controlled only by rotating the metal valve plate. The flat sealing method between the metal valve plate and the sealing surface is easier to control in terms of fit, and the flatness of both the metal valve plate and the sealing surface is easier to control during processing, thereby greatly improving the sealing effect during use.

[0025] In addition, the hardness of the metal valve disc is greater than the hardness of the sealing surface. During the frequent rotation of the metal valve disc relative to the sealing surface, the sealing surface will be worn flatter by the metal valve disc, making the fit between the two higher, thereby making the sealing effect better. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the ignition valve of the gas stove.

[0027] Figure 2 It is a top view of the ignition valve of the gas stove.

[0028] Figure 3 yes Figure 2 Cross-sectional view along the AA axis.

[0029] Figure 4 yes Figure 2 Cross-sectional view along the BB direction.

[0030] Figure 5 This is a schematic diagram of the cooperation between the metal valve plate and the boss in the ignition valve of the gas stove.

[0031] Figure 6 It is an exploded schematic diagram of the metal valve plate and the boss in the ignition valve of the gas stove.

[0032] Figure 7 It is a schematic diagram of the boss in the ignition valve of the gas stove.

[0033] Figure 8 This is a schematic diagram showing that the elastic member of the ignition valve of the gas stove is located inside the main body.

[0034] Figure 9 It is a top view of the main body of the ignition valve of the gas stove.

[0035] Figure 10 yes Figure 9 Cross-sectional view along CC direction.

[0036] In the figure, 1, valve body; 1a, air inlet channel; 1b, ignition channel; 1b1, ventilation section 1; 1b2, ventilation section 2; 1b3, connecting section; 1c, combustion channel; 1d, transition chamber; 1e, sealing surface; 1f, main body; 1f1, mounting hole; 1f2, annular partition; 1f3, positioning block; 1f4, positioning card slot; 1f5, arc-shaped air guide groove; 1f6, air vent; 1f7, air passage groove; 1g, valve cover; 1g1, groove 1; 1g2, groove 2; 1g3, groove 3; 1g4, boss; 1g5, movable hole; 1g6, protrusion; 1g61, limit notch; 1g62, limit slot; 1g7, ignition air inlet; 1g8, air hole; 1g9, combustion air inlet groove; 2, operating lever assembly; 2a, rod body; 2b, spring seat; 2c, return spring; 3, metal valve plate; 3a, arc-shaped notch; 4, elastic part; 4a, circular ring plate; 4b, elastic connecting plate; 5, sealing gasket; 6, limit pin; 7, adjusting screw; 8, solenoid valve core assembly. DETAILED DESCRIPTION

[0037] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solutions of the present invention, but the present invention is not limited to these embodiments.

[0038] Example 1

[0039] like Figure 1 、 Figure 2 and Figure 3As shown, the ignition valve of a gas stove includes a valve body 1 having an air intake passage 1a, an ignition passage 1b, and a combustion passage 1c, and an operating lever assembly 2 rotatably disposed within the valve body 1, the upper end of which extends outside the valve body 1. The operating lever assembly 2 is elastic and, when the operating lever assembly 2 moves downward against its own elastic force, controls the operation of the igniter within the gas stove. Specifically, the air intake passage 1a is horizontally disposed, and the valve body 1 also includes a vertically disposed mounting hole 1f1. The outlet of the air intake passage 1a is laterally connected to the mounting hole 1f1. The mounting hole 1f1 houses a solenoid valve core assembly 8. The valve body 1 includes a transition chamber 1d, and an annular partition 1f2 is disposed between the transition chamber 1d and the upper end of the mounting hole 1f1. The upper end of the solenoid valve core assembly 8, under its own elastic force, blocks the central hole of the annular partition 1f2. The lower end of the operating lever assembly 2 extends into the transition chamber 1d, and downward movement of the operating lever assembly 2 pushes the solenoid valve core assembly 8 downward. The solenoid valve core assembly 8 is prior art and will not be described in detail here. For details, please refer to the flow control valve disclosed in Patent Application No. 201711415798.6. In this embodiment, the operating lever assembly 2 includes a lever body 2a, a spring seat 2b secured to the lever body 2a extending outside the valve body 1, and a return spring 2c sleeved on the lever body 2a. The two ends of the return spring 2c respectively abut against the spring seat 2b and the outer upper end of the valve body 1.

[0040] Furthermore, if Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 and Figure 7As shown, the valve body 1 has a sealing surface 1e at the top wall of the transition chamber 1d. The valve body 1 also has a groove 1g1, which connects to the pilot channel 1b and has a notch extending through the sealing surface 1e, and a groove 1g2, which connects to the combustion channel 1c and has a notch extending through the sealing surface 1e. The lower end of the operating lever assembly 2 passes through the sealing surface 1e and is circumferentially secured to a metal valve disc 3 located at the location of the hard sealing surface 1e. Within the transition chamber 1d, an elastic member 4 is provided, acting on the metal valve disc 3 to force it into tight contact with the sealing surface 1e. The lower end of the lever 2a has a connector with a non-circular cross-section. The metal valve disc 3 has a connecting hole that matches the cross-sectional shape of the connector. Grooves 1g1 and 1g2 are distributed around the centerline of the operating lever assembly 2. Rotation of the metal valve disc 3 sequentially switches the ignition valve between simultaneous closing of grooves 1g1 and 1g2, opening of only groove 1g1, and simultaneous opening of grooves 1g1 and 1g2. In this embodiment, a downwardly projecting boss 1g4 is fixedly attached to the top wall of the transition chamber 1d, and the sealing surface 1e forms the bottom surface of the boss 1g4. The bottom of the boss 1g4 is also provided with a plurality of grooves 1g3. Groove 1g1, groove 2g2, and each groove 1g3 are distributed around the centerline of the operating lever assembly 2, with groove 1g1 and groove 2g2 positioned adjacent to each other. The boss 1g4 is circular, while groove 1g1, groove 2g2, and each groove 1g3 are arcuate window-shaped. The edge of the metal valve disc 3 is provided with an arcuate notch 3a. The sum of the arcs of groove 1g1 and groove 2g2 is less than 180°, and the arc of groove 2g2 is greater than that of groove 1g1. The arc of the arc notch 3a is no less than the sum of the arcs of groove 1g1 and groove 2g2.

[0041] Furthermore, if Figure 1 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 、 Figure 8 、 Figure 9 and Figure 10As shown, the valve body 1 comprises a main body 1f and a valve cover 1g fixedly connected to the upper end of the main body 1f via fasteners. The top of the main body 1f has a downwardly recessed recess. The transition chamber 1d is bounded by the inner wall of the recess and the bottom wall of the valve cover 1g. A boss 1g4 is integrally fixed to the bottom of the valve cover 1g. An annular sealing gasket 5 is provided between the main body 1f and the valve cover 1g, with the mouth of the recess located inside the sealing gasket 5. The intake channel 1a, pilot channel 1b, and combustion channel 1c are all horizontally arranged on the main body 1f. The pilot channel 1b and combustion channel 1c are parallel, and the intake channel 1a is perpendicular to both. The annular partition 1f2 and mounting hole 1f1 are also located on the main body 1f. Furthermore, the valve cover 1g is provided with an ignition air inlet hole 1g7 arranged vertically and an air passage hole 1g8 arranged obliquely. The lower end opening of the ignition air inlet hole 1g7 passes through the top wall of the groove 1g1, and the two end openings of the air passage hole 1g8 respectively pass through the hole wall of the ignition air inlet hole 1g7 and the bottom wall of the valve cover 1g. The upper end of the main body 1f is provided with an arc-shaped air guide groove 1f5 and the downward projection of one end opening of the air passage hole 1g8 passing through the bottom wall of the valve cover 1g is located in the arc-shaped air guide groove 1f5. The main body 1f is also provided with a vertical air vent 1f6, the upper end opening of the air vent 1f6 passes through the bottom wall of the arc-shaped air guide groove 1f5 and the lower end opening of the air vent 1f6 is laterally connected to the ignition channel 1b. The valve cover 1g also includes a combustion inlet groove 1g9, which extends through the bottom surface of the valve cover 1g and the sidewall of the second groove 1g2. A gas passage groove 1f7 is provided within the main body 1f. The lower end of the gas passage groove 1f7 laterally connects to the combustion channel 1c, while the upper end of the gas passage groove 1f7 aligns with the groove of the combustion inlet groove 1g9 that extends through the bottom surface of the valve cover 1g. The ignition channel 1b comprises a first channel segment, a second channel segment, and a connecting segment connecting the first and second channels. An adjustment screw 7 is internally threaded onto the second channel segment. The lower end of the vent hole 1f6 is connected to the connecting segment, and the gas output from the lower end of the vent hole 1f6 can be adjusted by turning the adjustment screw 7.

[0042] like Figure 1 、 Figure 3 、 Figure 4 and Figure 7As shown, the valve cover 1g is provided with a coaxially arranged movable hole 1g5 and a mating hole. The diameter of the movable hole 1g5 is larger than that of the mating hole. The lower end of the movable hole 1g5 extends through the sealing surface 1e. Grooves 1g1, 1g2, and 1g3 are located outside the movable hole 1g5, and the lower end of the movable hole 1g5 is sealed by the metal valve disc 3. The rod 2a passes through the movable hole 1g5 and the mating hole from bottom to top, and then extends to the outside of the valve cover 1g. An annular shoulder is located near the lower end of the rod 2a. The shoulder is located within the movable hole 1g5 and has an outer diameter larger than the diameter of the mating hole. The upper end of the valve cover 1g is provided with a cylindrical protrusion 1g6, and the matching hole penetrates the protrusion 1g6 axially. The upper end of the protrusion 1g6 is provided with a limiting notch 1g61, and the side of the rod body 2a is fixedly connected to a limiting pin 6 located in the limiting notch 1g61. The side of the protrusion 1g6 is also provided with a limiting groove 1g62, and the upper end notch of the limiting groove 1g62 penetrates the bottom wall of the limiting notch 1g61. The distance from the upper end notch of the limiting groove 1g62 to the groove wall on one side of the limiting notch 1g61 is greater than the distance from the upper end notch of the limiting groove 1g62 to the groove wall on the other side of the limiting notch 1g61. When the metal valve plate 3 rotates to switch the ignition valve from closing groove 1g1 and groove 2 1g2 at the same time to opening only groove 1g1, the limiting pin 6 moves from the groove wall on one side of the limiting notch 1g61 along the limiting notch 1g61 to the top of the limiting groove 1g62.

[0043] Furthermore, if Figure 8 and Figure 9 As shown, the elastic member 4 comprises a circular ring 4a and several circumferentially distributed elastic connecting pieces 4b. The lower end of the operating lever assembly 2 passes through the center hole of the circular ring 4a. The upper end of each elastic connecting piece 4b is integrally connected to the edge of the circular ring 4a, and the lower end of each elastic connecting piece 4b rests on the inner wall of the recess. Several positioning blocks 1f3 are fixedly connected to the inner wall of the recess along the circumference. Each positioning block 1f3 has a positioning slot 1f4 at its upper end. The lower end of each elastic connecting piece 4b rests on the corresponding positioning block 1f3 and is retained in the positioning slot 1f4.

[0044] Initially, the metal valve disc 3, under the action of the elastic member 4, rests tightly against the sealing surface 1e, simultaneously closing both groove 1g1 and groove 2 1g2. The stop pin 6, fixed to the side of the rod body 2a, is located on the side of the groove wall of the stop notch 1g61, closer to the upper end of the stop notch 1g62. To ignite, the user rotates the operating lever assembly 2 while pressing it downward. The metal valve disc 3 opens groove 1g1 as the operating lever assembly 2 rotates. During this process, the operating lever cannot move downward because the stop pin 6 is blocked by the bottom wall of the stop notch 1g61. As a result, the solenoid valve core assembly 8 remains sealed in the center hole of the annular partition 1f2, preventing gas from entering the transition chamber 1d. When the stop pin 6 reaches the upper notch of the stop slot 1g62, the operating lever assembly 2 moves downward because the stop pin 6 is no longer blocking it. This causes the operating lever assembly 2 to press against the upper end of the solenoid valve core assembly 8, opening the center hole of the annular partition 1f2. The gas in the intake passage 1a then flows sequentially through the mounting hole 1f1, the transition cavity 1d, and the groove 1g1 into the ignition passage 1b. Ultimately, the ignition passage 1b supplies the gas to the inner ring of the gas stove, where it cooperates with the ignition device on the inner ring to ignite. After ignition is complete, the user releases their hand, and the operating lever assembly 2 returns to its original position under its own elastic force. At this point, the upper end of the solenoid valve core assembly 8, under the action of the thermoelectric effect, still maintains the center hole of the annular partition 1f2 open, allowing the gas in the ignition passage 1b to be continuously supplied, ensuring that the inner ring remains in a burning state, forming a long-lasting flame.

[0045] Once the inner ring of the gas stove is ignited, the user continues to rotate the operating lever assembly 2 in the same direction. The metal valve disc 3 gradually opens the second groove 1g2. This allows some of the gas that has entered the valve body 1 to flow through the second groove 1g2 into the combustion channel 1c. Ultimately, the combustion channel 1c supplies the gas to the outer ring of the gas stove, where it is ignited by the pilot flame formed on the inner ring, resulting in combustion. By adjusting the opening of the second groove 1g2 by the metal valve disc 3, the flow rate in the combustion channel 1c can be adjusted, thereby adjusting the intensity of the fire.

[0046] Example 2

[0047] The structure and principle of this embodiment are basically the same as those of the first embodiment, except that: in this embodiment, the elastic member 4 includes a support spring, and both ends of the support spring respectively abut against the metal valve plate 3 and the bottom wall of the recess.

[0048] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Persons skilled in the art may make various modifications, additions, or substitutions to the described specific embodiments without departing from the spirit of the present invention or exceeding the scope of the appended claims.

Claims

1. An ignition valve for a gas stove, comprising a valve body (1) provided with an air inlet passage (1a), an ignition passage (1b) and a combustion passage (1c), and an operating lever assembly (2) rotatably connected to the valve body (1) and with its upper end extending out of the valve body (1), wherein the valve body (1) has a transition chamber (1d) in communication with the air inlet passage (1a), and is characterized in that: The valve body (1) has a sealing surface (1e) at the top wall of the transition chamber (1d), and the valve body (1) has a groove 1 (1g1) connected to the ignition channel (1b) and with a notch passing through the sealing surface (1e), and a groove 2 (1g2) connected to the combustion channel (1c) and with a notch passing through the sealing surface (1e). The groove 1 (1g1) and the groove 2 (1g2) are distributed around the center line of the operating rod assembly (2). The lower end of the operating rod assembly (2) passes through the sealing surface (1e) and is circumferentially fixed with a metal valve plate (3) having a hardness greater than that of the sealing surface (1e). The transition chamber (1d) is provided with an elastic member (4) for making the metal valve plate (3) and the sealing surface (1e) tightly abut. The ignition valve can be switched to the following modes: the groove 1 (1g1) and the groove 2 (1g2) are closed at the same time, only the groove 1 (1g1) is opened, and the groove 1 (1g1) and the groove 2 (1g2) are closed at the same time as the metal valve plate (3) rotates. ) are opened at the same time, the top wall of the transition chamber (1d) is fixedly connected with a downwardly protruding boss (1g4), the sealing surface (1e) is the bottom surface of the boss (1g4), and the bottom of the boss (1g4) is also provided with a plurality of grooves three (1g3), groove one (1g1), groove two (1g2) and each groove three (1g3) are distributed around the center line of the operating rod assembly (2), and groove one (1g1) and groove two (1g2) are arranged adjacent to each other, and the boss (1g4) The metal valve plate (3) is circular, and groove one (1g1), groove two (1g2) and groove three (1g3) are all in the shape of arc windows. An arc notch (3a) is provided on the edge of the metal valve plate (3). The sum of the arcs of groove one (1g1) and groove two (1g2) is less than 180°, and the arc of groove two (1g2) is greater than the arc of groove one (1g1). The arc of the arc notch (3a) is not less than the sum of the arcs of groove one (1g1) and groove two (1g2).

2. The ignition valve of the gas stove according to claim 1, characterized in that: The valve body (1) comprises a main body (1f) and a valve cover (1g) fixedly connected to the upper end of the main body (1f) by fasteners, the top of the main body (1f) has a downwardly recessed recess, the transition chamber (1d) is surrounded by the inner wall of the recess and the bottom wall of the valve cover (1g), the boss (1g4) is integrally fixed to the bottom of the valve cover (1g), an annular sealing gasket (5) is provided between the main body (1f) and the valve cover (1g), and the mouth of the recess is located on the inner side of the sealing gasket (5).

3. The ignition valve of the gas stove according to claim 2, characterized in that: The metal valve plate (3) is made of stainless steel, and the valve cover (1g) is made of aluminum.

4. The ignition valve of the gas stove according to claim 2, characterized in that: The elastic member (4) comprises a circular ring piece (4a) and a plurality of elastic connecting pieces (4b) distributed along the circumferential direction. The lower end of the operating rod assembly (2) passes through the central hole of the circular ring piece (4a). The upper end of each elastic connecting piece (4b) is integrally fixed to the edge of the circular ring piece (4a), and the lower end of each elastic connecting piece (4b) rests on the inner wall of the recess.

5. The ignition valve of the gas stove according to claim 4, characterized in that: A plurality of positioning blocks (1f3) are fixedly connected to the inner wall of the recess along the circumferential direction, and a positioning slot (1f4) is provided at the upper end of each positioning block (1f3). The lower end of each elastic connecting piece (4b) rests against the corresponding positioning block (1f3) and is clamped in the positioning slot (1f4).

6. The ignition valve of the gas stove according to claim 2, characterized in that: The elastic member (4) comprises a supporting spring, and the two ends of the supporting spring respectively abut against the metal valve plate (3) and the bottom wall of the recess.

Images