阅读说明：本技术 阻尼开关、旋塞阀和燃气具 (Damping switch, plug valve and gas appliance ) 是由 张艺缤 戚正胜 张炳卫 于 2020-06-19 设计创作，主要内容包括：本发明公开一种阻尼开关、旋塞阀和燃气具,所述旋塞阀包括外壳,所述外壳设置有在其厚度方向上贯穿的过孔,所述外壳还设置有能使所述阻尼开关整体固定安装于所述旋塞阀外部的安装部；转动件,容置于所述外壳内并可相对于所述外壳转动,所述转动件上开设有轴孔,所述轴孔对应连通所述过孔,所述轴孔供所述阀杆穿设安装；其中,所述转动件和所述外壳二者之一上设置有在所述阀杆的旋转方向上间隔排布的多个定位槽,二者之另一上设置有弹性顶抵组件,在阀杆带动转动件旋转过程中,所述弹性顶抵组件卡入所述多个定位槽的其中之一。本发明技术方案实现旋塞阀的燃气大小调节方便。(The invention discloses a damping switch, a plug valve and a gas appliance, wherein the plug valve comprises a shell, the shell is provided with a through hole penetrating in the thickness direction of the shell, and the shell is also provided with an installation part which can enable the damping switch to be integrally and fixedly installed outside the plug valve; the rotating piece is accommodated in the shell and can rotate relative to the shell, a shaft hole is formed in the rotating piece, the shaft hole is correspondingly communicated with the through hole, and the valve rod is arranged in the shaft hole in a penetrating mode; wherein, rotate the piece with be provided with on the two of the shell a plurality of constant head tanks that the interval was arranged in the direction of rotation of valve rod, be provided with elasticity on the other of the two and support the subassembly, at the valve rod drive and rotate a rotatory in-process, elasticity supports the subassembly card and goes into one of them of a plurality of constant head tanks. The technical scheme of the invention realizes that the fuel gas size of the plug valve is convenient to adjust.)

1. The utility model provides a damping switch is applied to the plug valve, the plug valve includes the valve rod, its characterized in that, damping switch includes:

the shell is provided with a through hole penetrating in the thickness direction of the shell, and the shell is also provided with an installation part which can enable the damping switch to be integrally and fixedly installed outside the plug valve;

the rotating piece is accommodated in the shell and can rotate relative to the shell, a shaft hole is formed in the rotating piece, the shaft hole is correspondingly communicated with the through hole, and the valve rod is arranged in the shaft hole in a penetrating mode;

wherein, rotate the piece with be provided with on the two of the shell a plurality of constant head tanks that the interval was arranged in the direction of rotation of valve rod, be provided with elasticity on the other of the two and support the subassembly, at the valve rod drive and rotate a rotatory in-process, elasticity supports the subassembly card and goes into one of them of a plurality of constant head tanks.

2. The damping switch as claimed in claim 1, wherein the housing is mounted with the elastic abutting assembly, the rotating member is provided with a plurality of positioning slots at intervals on the outer periphery thereof, the elastic abutting assembly includes an elastic member and an abutting member, one end of the elastic member abuts against the housing, the other end abuts against the abutting member, the elastic member provides an elastic force to urge the abutting member against the slot wall of the positioning slot and generates a warning sound.

3. The damping switch of claim 2, wherein the housing is provided with an extending portion extending outward, the extending portion is formed with a mounting groove therein, one end of the elastic member extends into the mounting groove, and the other end of the elastic member extends from the mounting groove and presses against the abutting member.

4. The damping switch as claimed in claim 2, wherein the side of the abutting member facing the rotating member has an arc-shaped contact surface, and the opening shape of the positioning slot is adapted to the outer contour shape of the abutting member.

5. The damper switch of claim 1, wherein the mounting portion is a connecting bracket extending from the housing to one side thereof, the connecting bracket being adapted to be fixedly coupled to the plug valve.

6. The damping switch according to any one of claims 1 to 5, wherein the rotating member includes a base portion having a plurality of positioning grooves formed at intervals on an outer periphery thereof, and positioning posts connected to the base portion and extending to one side of the base portion, the shaft holes penetrate the positioning posts and the base portion, the housing further includes a positioning cylinder extending outward from a peripheral edge of the through hole, and the positioning posts and the positioning cylinder shaft holes are engaged with each other.

7. The damper switch according to claim 6, wherein the housing includes a base and a cover detachably connected to the base, the via hole penetrates through the base and the cover, the cover includes a cover body provided with the via hole and the positioning cylinder connected to the cover body, and the positioning cylinder extends from a periphery of the via hole to an outer side of the cover body.

8. The utility model provides a plug valve, is applied to the gas-cooker which characterized in that, plug valve includes:

a valve body;

a valve stem partially extending into the valve body and rotatable relative to the valve body; and

the damping switch according to any one of claims 1 to 7, wherein the damping switch is mounted outside the valve body, and the valve rod is arranged in a shaft hole in the damping switch in a penetrating manner.

9. The plug valve of claim 8, further comprising a microswitch removably connected to said valve body.

10. The plug valve of claim 9, wherein said microswitch is secured to said damper switch and said valve body by a connector.

11. The plug valve according to claim 10, wherein the valve body is provided with a locking hole, the mounting portion is provided with a connecting hole, the microswitch is provided with a mounting hole for aligning the connecting hole and the locking hole, and the damping switch, the microswitch and the valve body are fixed together by a connecting piece passing through the connecting hole and the mounting hole and locked in the locking hole.

12. The plug valve of claim 9, wherein a limit groove is further formed in the exterior of the valve body, and the microswitch is embedded in the limit groove.

13. The plug valve of claim 9, wherein the upper portion of the valve body is further provided with an upwardly extending connecting cylinder through which the valve stem extends into the valve body, the connecting cylinder being provided with a notch extending radially therethrough, the microswitch passing through the notch to contact the valve stem.

14. The plug valve according to claim 13, wherein the bottom of the housing is provided with an annular groove surrounding the through hole, the inner wall of the annular groove is radially and convexly provided with a positioning lug, the end part of the connecting cylinder is embedded in the annular groove, and the positioning lug is clamped in the notch.

15. A gas appliance comprising a burner and a plug valve connected thereto, wherein the plug valve is according to any one of claims 8 to 14.

Technical Field

The invention relates to the technical field of gas appliances, in particular to a damping switch, a plug valve using the damping switch and a gas appliance using the plug valve.

Background

In some designs of gas cookers, most plug valves are in stepless adjustment, and when a user uses the plug valves to control the fire, the user mostly bends down to observe the size of flame to judge the size of the fire, so that the process of adjusting the size of the fire is troublesome.

Disclosure of Invention

The invention mainly aims to provide a damping switch, aiming at realizing simple and convenient adjustment process of the firepower of a plug valve in a gas appliance.

In order to achieve the above object, the damping switch provided by the present invention is applied to a plug valve, the plug valve includes a valve rod, and the damping switch includes:

the shell is provided with a through hole penetrating in the thickness direction of the shell, and the shell is also provided with an installation part which can enable the damping switch to be integrally and fixedly installed outside the plug valve;

the rotating piece is accommodated in the shell and can rotate relative to the shell, a shaft hole is formed in the rotating piece, the shaft hole is correspondingly communicated with the through hole, and the valve rod is arranged in the shaft hole in a penetrating mode;

wherein, rotate the piece with be provided with on the two of the shell a plurality of constant head tanks that the interval was arranged in the direction of rotation of valve rod, be provided with elasticity on the other of the two and support the subassembly, at the valve rod drive and rotate a rotatory in-process, elasticity supports the subassembly card and goes into one of them of a plurality of constant head tanks.

According to the technical scheme, the mounting part is arranged in the damping switch to fix the damping switch to the outer part of the plug valve, the damping switch is provided with the plurality of positioning grooves and the elastic abutting assembly capable of abutting against one of the plurality of positioning grooves, and the plug valve can realize accurate control and adjustment of firepower of a plurality of gears through clamping and matching of the elastic abutting assembly and the positioning grooves in the process of adjusting the firepower of the valve rod in a rotating manner, so that the process of adjusting the firepower of a gas appliance is simple and convenient.

Optionally, the shell is installed the elasticity is pushed up and is supported the subassembly, the periphery interval that rotates the piece is provided with a plurality of constant head tanks, the elasticity is pushed up and is supported the subassembly and include elastic component and top and support the piece, elastic component one end butt the shell, the other end butt the top support the piece, the elastic component provides elasticity and orders about the top support the cell wall of constant head tank and production prompt tone.

Optionally, the housing is provided with an extending portion extending outward, a mounting groove is formed in the extending portion, one end of the elastic member extends into the mounting groove, and the other end of the elastic member extends out of the mounting groove and abuts against the abutting member.

Optionally, one side of the abutting piece, which faces the rotating piece, is provided with an arc-shaped contact surface, and the opening shape of the positioning groove is matched with the outer contour shape of the abutting piece.

Optionally, the installation department be by the shell is to its one side extended linking bridge, linking bridge be used for with plug valve fixed connection.

Alternatively, the rotating member includes a base portion having a plurality of positioning grooves spaced apart from each other on an outer periphery thereof, and positioning posts connected to the base portion and extending toward one side of the base portion, the shaft holes penetrate the positioning posts and the base portion, the housing further includes positioning cylinders extending outward from peripheral edges of the through holes, and the positioning posts are engaged with the shaft holes of the positioning cylinders.

Optionally, the housing includes a base and a cover detachably connected to the base, the via hole penetrates through the base and the cover, the cover includes a cover body provided with the via hole and a positioning cylinder connected to the cover body, and the positioning cylinder extends from the periphery of the via hole to the outer side of the cover body.

The invention also provides a plug valve, which is applied to a gas stove and comprises:

a valve body;

a valve stem partially extending into the valve body and rotatable relative to the valve body; and

and the damping switch according to any of the above embodiments, the damping switch is mounted outside the valve body, and the valve rod is arranged in the shaft hole in the damping switch in a penetrating manner.

Optionally, the plug valve further comprises a microswitch, and the microswitch is detachably connected with the valve body.

Optionally, the microswitch is fixed with the damping switch and the valve body through a connecting piece.

Optionally, be provided with the locking hole on the valve body, the installation department is provided with the connecting hole, be provided with the counterpoint on the micro-gap switch the connecting hole with the mounting hole in locking hole, damping switch micro-gap switch and the valve body passes through the connecting piece the connecting hole with the mounting hole and locking in locking hole and fixed together.

Optionally, a limit groove is further formed in the outer portion of the valve body, and the micro switch is embedded into the limit groove.

Optionally, the upper portion of the valve body is further provided with a connecting cylinder extending upwards, the valve rod penetrates through the connecting cylinder and extends into the valve body, the connecting cylinder is provided with a notch penetrating in the radial direction of the connecting cylinder, and the micro switch penetrates through the notch to be in contact with the valve rod.

Optionally, the bottom of shell is provided with and encircles the ring channel of via hole, the inner wall radial protruding of ring channel is equipped with the location lug, the tip of connecting cylinder is inlayed and is located in the ring channel, just the location lug card is gone into in the breach.

The invention further provides a gas appliance, which comprises a burner and a plug valve connected with the burner, wherein the plug valve is the plug valve in any one of the embodiments.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a schematic perspective view of a plug valve according to an embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view of the plug valve of FIG. 1;

FIG. 3 is a schematic view of the valve seat of the plug valve of FIG. 1;

FIG. 4 is a schematic view of the valve stem of the plug valve of FIG. 1

FIG. 5 is an exploded view of the stem and poppet of the plug valve of FIG. 1;

FIG. 6 is an internal structural view of a valve cover of the plug valve of FIG. 1;

FIG. 7 is a front view of one embodiment of the valve cartridge of the present invention;

FIG. 8 is a perspective view of the valve cartridge of FIG. 7;

FIG. 9 is a cross-sectional view of the valve cartridge of FIG. 8;

FIG. 10 is a perspective view of the valve cartridge of FIG. 7 from yet another perspective;

FIG. 11 is an exploded view of the damper switch of the plug valve of FIG. 12;

FIG. 12 is a schematic diagram of the internal structure of the damping switch of FIG. 11;

FIG. 13 is an assembly view of the base body and the bonnet in the valve body in the damping switch in the plug valve of FIG. 1;

FIG. 14 is a schematic perspective view of a valve cover of the plug valve of FIG. 1;

FIG. 15 is a perspective view from above of the base body in the damper switch in the plug valve of FIG. 1;

FIG. 16 is an exploded view of the base body, the bonnet in the valve body, and the microswitch in the damping switch in the plug valve of FIG. 1;

FIG. 17 is an assembly view of a valve cover and micro-switch in the valve body of the plug valve of FIG. 1;

FIGS. 18 a-18 j are schematic views of the valve core of the plug valve of the present invention rotated from 0 to 270 degrees, as viewed in cross-section through the second outlet passage;

fig. 19a to 19j are schematic views illustrating the rotation of the valve element from 0 degree to 270 degree in the plug valve of the present invention, which are sectioned at the first outlet passage.

The reference numbers illustrate:

the objects, features, and advantages of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the present invention, unless otherwise expressly stated or limited, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In addition, the descriptions related to "first", "second", etc. in the present invention are only for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

Referring to fig. 1 and 2, the present invention provides a plug valve 100, and the plug valve 100 can be used in a gas appliance, or the gas appliance includes the plug valve 100. The gas appliance includes, but is not limited to, gas range, gas water heater and other appliances requiring gas. The gas appliance further comprises a burner which is connected with the plug valve 100. The gas appliance can control the firepower of the burner according to the plug valve 100 so as to meet different combustion requirements. For example, when the gas cooker is a gas cooker, the heating power of the burner can be controlled by the plug valve 100 to meet the cooking requirements of different food materials. For another example, when the gas appliance is a gas water heater, the water outlet temperature of the gas water heater can be adjusted by controlling the firepower of the burner through the plug valve 100.

For convenience of description, the up and down directions referred to in the following description are referred to as up and down directions of the spool 130 in the drawings.

Referring to fig. 1 to 3, a plug valve 100 according to an embodiment of the present invention includes a valve body 110, a valve stem 120, a valve core 130, a damping switch 140, and a microswitch 150. The valve core 130 is disposed in the valve body 110 and can rotate in the valve body 110, the valve stem 120 extends into the valve body 110 and is connected with the upper portion of the valve core 130, and the damping switch 140 is fixed outside the valve body 110 and sleeved outside the valve stem 120. It can be understood that, in practical products, a knob may be further installed at the upper end of the valve rod 120, and when in use, a user manually operates the knob to drive the valve rod 120 and the valve core 130 to rotate so as to control the gas flow flowing out of the plug valve 100 and further realize the fire adjustment.

Specifically, referring to FIGS. 4-6, the valve body 110 is the main structural element of the plug valve 100, and other components of the plug valve 100 may be mounted to the valve body 110 to allow the plug valve 100 to perform different functions. The valve body 110 may be made of copper material or other materials through casting, and in order to meet the installation requirements of different components, the valve body 110 is generally an irregular component. The valve body 110 mainly includes two parts, namely a valve seat 111 and a valve cover 112, wherein the valve cover 112 and the valve seat 111 are covered and connected to form an accommodating chamber 113, the valve seat 111 further forms an inner ring air supply hole 115 and an outer ring air supply hole 114 (see fig. 3) on the side wall of the accommodating chamber 113, wherein the inner ring air supply hole 115 is communicated with an inner ring nozzle in the burner through a pipeline, and the outer ring air supply hole 114 is communicated with an outer ring nozzle in the burner through a pipeline. The upper portion of the bonnet 112 is provided with an insertion hole for installing the valve stem 120, the insertion hole is communicated with the receiving cavity 113, and the lower end of the valve stem 120 can be inserted into the receiving cavity 113 through the insertion hole and connected with the valve core 130.

Referring to fig. 7 to 10, the valve core 130 is an irregular cone, the valve core 130 includes two sections, specifically, a connecting section 131 located at the upper portion and a gas supply section 132 located at the lower portion, wherein an installation cavity 133 opened upward is formed in the connecting section 131, a gas inlet channel 134 opened downward is formed in the gas supply section 132, a clamping groove 135 penetrating through a side wall of the connecting section 131 is further formed in the side wall of the connecting section 131, a clamping pin 121 is connected to a lower side wall of the valve rod 120, a guide rod 122 is further connected to a lower end of the valve rod 120, the guide rod 122 is inserted into the gas inlet channel 134 from the installation cavity 133 downward, a spring 123 is further sleeved outside the guide rod 122, the spring 123 is located in the installation cavity 133, the spring 123 always provides upward elastic force, further, a child lock groove 116 opened downward is formed in an inner wall of the valve cover 112, and annular sliding tables 117 extend from two sides of the child lock groove 116, the opening of the child lock groove 116 aligns the clamping groove 135 of the valve core 130 in the up-down direction when the plug valve 100 is in a closed state, since the spring 123 always provides an upward spring force, when the stop cock valve 100 is in the closed position, the valve stem 120 is urged upwardly by the spring 123 and the latch 121 is inserted into the child lock slot 116, when the valve needs to be opened, the user presses the valve rod 120 through the knob, so that the clamping pin 121 slides downwards to be clamped into the clamping groove 135 in the valve core 130, and then the user applies horizontal force, so that the valve rod 120 slides along the annular slide 117 by the detent 121 to rotate the valve core 130, that is, the plug valve 100 of the present application is constructed as described above, in the starting process, the user is required to apply two actions of pressing downwards and horizontally rotating, so that the condition that the user touches the knob by mistake to cause gas leakage can be avoided, and further, in some embodiments, bayonet 135 is 2.2mm wide, bayonet 121 is 2.0mm in diameter, therefore, the valve core 130 is matched closely, and has almost no virtual position, so that the valve core 130 is more sensitive in forward and reverse rotation.

The air supply section 132 comprises a bottom surface 136 and a side surface 137, the side surface 137 is a conical surface with a larger upper radius, the air supply section 132 of the accommodating cavity 113 in the valve body 110 is further formed with a first air outlet channel 138 communicated with the air inlet channel 134 and a second air outlet channel 139 communicated with the air inlet channel 134, the air inlet channel 134 extends from the bottom surface 136 to the inside of the valve core 130, the first air outlet channel 138 is formed by recessing from the side surface 137 to the inside of the valve core 130, the first air outlet channel 138 spirally extends along the circumferential direction of the valve core 130, the second air outlet channel 139 is formed by recessing from the side surface 137 to the inside of the valve core 130 and is arranged at intervals with the first air outlet channel 138 along the axial direction of the valve core 130, the second air outlet channel 139 comprises a plurality of air outlet holes with different aperture and arranged at intervals in the circumferential direction of the valve core 130, that is to say, in the use, the valve core 130 is rotated by the user through rotating the knob, because the first air outlet channel 138 spirally extends, the linear change of the communication area between the first air outlet channel 138 and the air supply outer ring air outlet hole 114 is more obvious, therefore, the effect of controlling the flame size of the outer ring of the burner by the plug valve 100 is more obvious, a user can obviously see the flame change of the burner, and the flame size of the inner ring of the burner can be adjusted because the second air outlet channel 139 comprises a plurality of air outlet holes with different apertures which are distributed at intervals in the circumferential direction of the valve core 130, so that various cooking requirements of the user can be met.

Specifically, the central axis of the intake passage 134 may be linear or curved. In the present embodiment, the central axis of the intake passage 134 is linear, and the intake passage 134 has an equal cross-sectional area. The depth direction of the intake passage 134 extends in the axial direction of the spool 130. Of course, in other embodiments, the intake passage 134 may be of a variable cross-sectional shape.

The first outlet channel 138 is recessed from the side surface 137 into the valve element 130, and therefore, it can be understood that the depth direction of the first outlet channel 138 is the radial direction of the valve element 130. First outlet channel 138 may be formed by a machining process.

Note that the first outlet passage 138 extends spirally along the circumferential extension of the valve element 130, meaning that the contour of the first outlet passage 138 on the side surface 137 extends spirally along the circumferential extension of the valve element 130. At this time, the projection of the first outlet passage 138 on an assumed plane passing through the central axis of the spool 130 is inclined.

Referring to the first outlet channel 138 again to fig. 7, in some embodiments, the first outlet channel 138 includes a first recess 1382 and a first through hole 1381, and the first recess 1382 is formed on the side surface 137. The first through hole 1381 communicates the intake passage 134 and the first recess 1382. The first groove 1382 spirally extends along the circumference of the spool 130.

Thus, when the first recesses 1382 communicate with the outer ring air supply hole 114, the gas in the air supply passage 134 can flow into the outer ring air supply hole 114 through the first through holes 1381 and the first recesses 1382, thereby achieving the purpose of gas control. In addition, the first groove 1382 is blocked from the intake passage 134 in the radial direction of the spool 130, so that the gas can flow into the first groove 1382 only through the first through hole 1381. Since the side surface 132 of the first groove 1382 on the valve core 130 is spirally disposed, the overlapping area of different portions of the first groove 1382 and the outer ring air supply hole 114 is changed, so as to realize the adjustment of the gas flow rate and the linear adjustment of the gas.

In the present embodiment, when the first through holes 1381 are aligned with the outer ring air supply hole 114, the communication area between the first air outlet channel 138 and the outer ring air supply hole 114 is the largest, and the gas directly enters the outer ring air supply hole 114 after passing through the first through holes 1381. In the rotation process of the valve core 130, the first groove 1382 is gradually communicated with the outer ring air supply hole 114, at this time, because the first groove 1382 is spiral, the communication area of the first air outlet channel 138 and the outer ring air supply hole 114 is reduced, and the path from the air inlet channel 134 to the outer ring air supply hole 114 is lengthened, so that the resistance is increased, the reduction range of the flow rate of the gas is more obvious, and the linear flame adjustment effect of the burner corresponding to the first air outlet channel 138 is further improved. It is understood that the first through hole 1381 communicates in the radial direction of the spool 130.

In some embodiments, along the length of the first recess 1382, the first recess 1382 includes a first end 1383 and a second end 1384 opposite the first end 1383, with the first through-hole 1381 being located between the first end 1383 and the second end 1384.

As discussed above, when the first through holes 1381 are aligned with the outer ring supply hole 114, the communication area of the first gas outlet passages 138 with the outer ring supply hole 114 is maximized, and the flow rate of gas through the first gas outlet passages 138 is maximized. The farther the portion of the first recess 1382 is located from the first through hole 1381, the smaller the flow rate of the gas.

In the present embodiment, the first through hole 1381 is located between the first end 1383 and the second end 1384, so that during the ignition of the burner, the communication area between the first outlet channel 138 and the outer ring air supply hole 114 gradually increases along with the rotation of the spool 130, and the gas flow rate of the plug valve 100 can be linearly changed from just opening the valve to the state where the gas flow rate is maximum, thereby preventing the danger caused by the explosion of the burner.

Further, the helical length along the side 137 of the spool 130 is greater than the helical length of the second end 1384 and the first through hole 1381 along the side 137 of the spool 130. In the present embodiment, during the ignition of the burner, the spool 130 rotates counterclockwise, the second end 1384 communicates with the outer ring air supply hole 114 first, and the first through hole 1381 and the second end 1384 sequentially communicate with the outer ring air supply hole 114 as the spool 130 rotates. The helical length between the first end 1383 and the first through hole 1381 is long, so that the gas flow rate adjusting range flowing out from the outer ring gas supply hole 114 is wider as the spool 130 rotates after the burner is ignited, thereby facilitating the linear adjustment of the burner flame.

Further, the first groove 1382 extends spirally toward the bottom surface 136 in a direction from the first end 1383 toward the second end 1384. Conversely, the first groove 1382 extends spirally upward in a direction from the second end 1384 toward the first end 1383. Thus, the first groove 1382 may fully utilize the upper position of the air supply section 132 of the valve core 130, facilitating the formation of the first groove 1382.

As for the second gas outlet channel 139, as can be seen from the above, in the second gas outlet channel 139 of the present application, the second gas outlet channel 139 is formed by recessing the side surface 137 into the valve core 130 and is arranged at an interval with the first gas outlet channel 138 along the axial direction of the valve core 130, and the second gas outlet channel 139 includes a plurality of gas outlet holes with different apertures arranged at intervals in the circumferential direction of the valve core 130. In the rotation process of the valve core 130, the inner ring air supply hole 115 is butted with the air outlet holes with different apertures in the second air outlet channel 139, so that the inner ring flame size is adjusted.

In the present embodiment, please refer to fig. 7 to fig. 10 again, along the axial direction of the valve core 130, the first air outlet channel 138 and the second air outlet channel 139 are respectively arranged up and down, or the first air outlet channel 138 is located above the second air outlet channel 139. Further, in the rotational direction of the plug valve 100 from the closed state to the open state, the shortest distance between the inner ring air supply holes 115 and the second air outlet passage 139 along the side surface 137 of the valve body 130 is smaller than the shortest distance between the outer ring air supply holes 114 and the first air outlet passage 138 along the side surface 137 of the valve body 130. Wherein the shortest distance between the inner ring air supply hole 115 and the second air supply hole 139 is the spiral length of the first air supply hole and the inner ring air supply hole 115 in the second air supply hole 139 in the circumferential direction of the valve core 130 in the opening rotation direction, so, in the process of adjusting the fire power by rotating the valve core 130 through the knob and the valve rod 120, because the spiral length of the second air supply hole 139 and the inner ring air supply hole 115 in the circumferential direction of the valve core 115 is smaller, the inner ring air supply hole 115 is firstly conducted with the second air supply hole 139 to supply air, in the ignition process, the inner ring nozzle in the burner firstly sprays gas to burn to form inner ring flame, when the valve core 130 is further rotated, the outer ring air supply hole 114 is also conducted with the first air supply hole 138, the outer ring nozzle also sprays gas to be ignited by the inner ring flame, when the burner is ignited, the inner ring flame is directed to the outer ring flame from inside to outside, the process from small flame to large flame can avoid deflagration phenomenon in the ignition process of the burner. Specifically, in the structure of the second air outlet channel 139, the air outlet hole includes the ignition hole 1397 arranged at the first position in the rotation direction, that is, the shortest distance between the second air outlet channel 139 and the inner ring air supply hole 115 is the spiral length of the ignition hole 1397 and the inner ring air supply hole 115 in the circumferential direction of the valve plug 115, in the ignition process of the plug valve 100 of the present application, first, the inner ring air supply hole 115 is in butt joint with the ignition hole 1397, so that the inner ring nozzle jet ignition of the burner is realized, when the valve plug 130 further rotates, the outer ring air supply hole 114 is simultaneously in butt joint and communicated with the second end of the first air outlet channel 138, and because the aperture of the ignition hole 1397 can be designed to be relatively small, the structure of the present application enables the ignition process to be free from the detonation phenomenon, and the ignition process is smooth and safe.

In some embodiments, the projections of first outlet channel 138 and second outlet channel 139 partially overlap along the axial direction of spool 130, and the central angle of the projection of first outlet channel 138 on bottom surface 136 is smaller than the central angle of the projection of second outlet channel 139 on bottom surface 136. Therefore, the projection parts of the first air outlet channel 138 and the second air outlet channel 139 are overlapped to enable the arrangement of the first air outlet channel 138 and the second air outlet channel 139 on the valve core 130 to be compact, the central angle of the projection of the first air outlet channel 138 on the bottom surface 136 is smaller than that of the projection of the second air outlet channel 139 on the bottom surface 136, in the rotating process of the valve core 130, after the first air outlet channel 138 and the outer ring air supply holes 114 are staggered, outer ring air supply closing is achieved, outer ring flames are closed, the second air outlet channel 139 also has a certain adjusting space, and therefore the size of inner ring flames can be adjusted under the condition that the outer ring flames are closed, and the requirements of different cooking firepower of users can be met.

Specifically, with continued reference to fig. 7-10, during the rotational travel of the first through-hole 1381 to the first end 1383, the air outlet holes at least comprise a first air outlet hole 1391, a second air outlet hole 1392 and a third air outlet hole 1393 which are arranged in sequence, wherein the diameters of the first air outlet 1391, the second air outlet 1392 and the third air outlet 1393 are decreased progressively, and in combination with the above, when the plug valve 100 is opened, the valve core 130 rotates counterclockwise, the outer ring air supply hole 114 slides relative to the first air outlet channel 138 in the direction of the second end 1384, the first through hole 1381 and the first end 1383, when the valve core 130 rotates counterclockwise, the outer ring flame is maximum when the outer ring air supply hole 114 is butted with the first through hole 1381, when the outer ring air supply hole 114 moves from the first through hole 1381 toward the first end, the communication area (hatched portion) of the outer ring air supply hole 114 with the first air outlet passage 138 is gradually reduced, so that the outflow amount of the gas can be controlled to be gradually reduced. The outer ring flame of combustor diminishes gradually this moment, and this application decrements the setting with first venthole 1391, second venthole 1392 and third venthole 1393 aperture in the second outlet channel 139 for inner ring flame is the equal trend that diminishes with outer ring flame, thereby can realize that the flame size on the whole combustor is adjusted, satisfies user's culinary art user demand.

Further, the air outlet hole further comprises a fourth air outlet hole 1394, a fifth air outlet hole 1395 and a sixth air outlet hole 1396 which are arranged in sequence, the fourth air outlet hole 1394, the fifth air outlet hole 1395 and the sixth air outlet hole 1396 are located behind the third air outlet hole 1393 in the rotation direction, and the aperture of the fourth air outlet hole 1394, the aperture of the fifth air outlet hole 1395 and the aperture of the sixth air outlet hole 1396 are gradually increased or gradually decreased. The aperture of the fourth air outlet 1394, the aperture of the fifth air outlet 1395 and the aperture of the sixth air outlet 1396 are preferably decreased gradually, wherein the aperture of the fourth air outlet 1394 is equivalent to that of the first air outlet 1391, when the inner ring air supply hole 115 is communicated with the fourth air outlet 1394, the inner ring flame on the burner is maximum, and the above contents are combined.

It will be appreciated that while three outlet holes are illustrated in the rotational travel of the first through-hole 1381 to the first end and three outlet holes are illustrated after the second outlet hole 1392, the number of outlet holes may be other numbers, such as more dense outlet holes, to achieve finer inner ring flame size adjustment.

In order to realize the convenience of adjusting the inner ring flame and the outer ring flame during the use process of a user, please refer to fig. 1 and 2 and fig. 11 and 12, the present application provides a structural improvement for the damping switch 140 in the plug valve 100, and provides a damping switch 140 with an innovative design, in some embodiments, the damping switch 140 includes a housing 141 and a rotating member 144, the housing 141 is provided with a through hole 1423 penetrating in the thickness direction thereof, the housing 141 is further provided with a mounting portion capable of fixedly mounting the damping switch 140 integrally on the exterior of the plug valve 100, the damping switch 140 is detachably connected with the valve cap 112 of the valve body 110 through the mounting portion, the rotating member 144 is accommodated in the housing 141 and can rotate relative to the housing 141, the rotating member 144 is provided with a shaft hole 1444, the shaft hole 1444 is correspondingly communicated with the through hole 1423, the shaft hole 1444 is used for the valve rod 120 to be fixedly installed, and the rotating member 144 is linked with the valve rod 120; wherein, one of the rotating member 144 and the housing 141 is provided with a plurality of positioning grooves 1443 arranged at intervals in the rotating direction of the valve rod 120, and the other of the rotating member 144 and the housing 141 is provided with an elastic abutting assembly 145, and in the process of the rotating member 144 being driven by the valve rod 120 to rotate, the elastic abutting assembly 145 is snapped into one of the positioning grooves 1443, further, in the application, the elastic abutting assembly 145 is snapped into one positioning groove 1443 when the valve core 130 rotates, and the inner ring air supply hole 115 is in abutting communication with one air outlet hole in the second air outlet channel 139, so as to maintain the abutting state of the inner ring air supply hole 115 and the air outlet hole, that is, at least the positioning groove 1443 is arranged in a corresponding relationship with the air outlet hole in the second air outlet channel 139, of course, the number of the positioning grooves 1443 may be more than the number of the air outlet holes, that is, that the damping switch 140 is designed to cooperate with the valve core 130, so as to realize the precise gear adjustment of the inner ring flame and the outer ring flame, the firepower adjusting process is convenient, and certainly, when the second air outlet channel 139 is designed for linear adjustment similar to the first air outlet channel 138, the damping switch 140 of the present application also realizes convenience of adjusting inner ring flame and outer ring flame in a gear adjusting mode.

According to the technical scheme, the damping switch 140 is arranged in the plug valve 100, wherein the damping switch 140 is provided with the plurality of positioning grooves 1443 and the elastic abutting assembly 145 capable of abutting against one of the plurality of positioning grooves 1443, so that in the process of adjusting the firepower of the valve rod 120 in a rotating manner, the plug valve 100 can realize accurate control and adjustment of the firepower of a plurality of gears through the clamping and matching of the elastic abutting assembly 145 and the positioning grooves 1443, the adjusting process of the firepower of a gas appliance is simple and convenient, the damping switch 140 can be arranged outside the valve body 110, and when the plug valve 100 is used for a long time, fragments generated by the damping switch 140 cannot fall into the valve body 110, so that the adverse influence of the damping switch 140 on the air tightness of the valve body 110 is avoided, and the damping switch 140 is arranged outside the valve body 110, so that the convenience in assembly and disassembly of the damping switch 140 is improved.

In the present application, the damping switch 140 is installed outside the valve body 110, and for the convenience of installing and fixing the damping switch 140, please refer to fig. 13 to fig. 15, fig. 13 is an assembly diagram of the base main body 1431 and the valve cover 112 in the damping switch 140, the installation portion is a connecting bracket 1434 extended from the base main body 1431 in the housing 141 to one side, and the connecting bracket 1434 is used for being fixedly connected with the valve body 110 of the plug valve 100.

The present application preferably forms a plurality of positioning grooves 1443 on the rotating member 144, and the elastic abutting assembly 145 is installed on the housing 141, specifically, the elastic abutting assembly 145 includes an elastic member 146 and an abutting member 147, one end of the elastic member 146 abuts against the housing 141, the other end abuts against the abutting member 147, a plurality of positioning grooves 1443 are spaced on the outer periphery of the rotating member 144, and the elastic member 146 provides elastic force to drive the abutting member 147 to abut against the groove wall of the positioning groove 1443 and generate a warning sound. The rotating member 144 may be made of metal, and the abutting member 147 may also be made of metal, and the abutting member 147 impacts the groove wall of the positioning groove 1443 under the driving of the elastic member 146 to generate a warning sound. The user can know whether the fire power is effectively adjusted or not by combining the prompt tone in the fire power adjusting process.

In some embodiments, the housing 141 includes a base 143 and a cover 142 adapted to cover the base 143, the cover 142 and the base 143 can be detachably connected by a snap-fit manner, the base 143 includes a base main body 1431 and an extension 1432, the extension 1432 extends from an edge of the base main body 1431 to the outside, the rotating element 144 is accommodated in the base main body 1431, a mounting groove 1433 is formed in the extension 1432, the elastic element 146 extends into the mounting groove 1433, one end of the elastic element 146 extends into the mounting groove 1433, and the other end of the elastic element 146 extends from the mounting groove 1433 and presses the abutting element 147. The elastic member 146 of this embodiment is a spring, and the spring is limited by the mounting groove 1433, so that the structural stability can be ensured. Of course, in other embodiments, the elastic member 146 may be a spring structure.

Further, in order to ensure smooth movement during the rotation adjustment, the side of the abutting element 147 facing the rotating element 144 has an arc-shaped contact surface, and the opening shape of the positioning groove 1443 is matched with the outer contour shape of the abutting element 147. The abutting member 147 shown in the figures of the present application is spherical and is a steel ball, and the positioning groove 1443 is an open slot having a spherical surface, when the abutting member 147 is snapped into the positioning groove 1443. The positioning groove 1443 can only accommodate a small portion of the abutting member 147, so that the abutting member 147 can smoothly enter another adjacent positioning groove 1443 when separating from one positioning groove 1443 during the rotation process. In other embodiments, the abutting member 147 may be a positioning pin structure with a spherical head.

Further, in order to ensure a smoother rotation of the rotating member 144, the present application further provides the following improvements: the rotating member 144 includes a base 1441 having a plurality of positioning grooves 1443 at intervals on an outer periphery thereof, and positioning posts 1442 connected to the base 1441 and extending toward the base 1441, wherein a shaft hole 1444 penetrates the positioning posts 1442 and the base 1441, the housing 141 further includes a positioning cylinder 1422, specifically, the through hole 1423 penetrates the base 143 and the cover 142, the cover 142 includes a cover body 1421 having a through hole 1423 and the positioning cylinder 1422 connected to the cover body 1421, the positioning cylinder 1422 extends from a peripheral edge of the through hole 1423 to an outer side of the cover body 1421, and the positioning posts 1442 are engaged with the positioning cylinder 1422 through the shaft holes. The positioning post 1442 and the positioning cylinder 1422 are coaxially arranged, since the cover 142 and the base 143 are relatively fixed, and the valve rod 120 in the plug valve 100 passes through the shaft hole 1444 to drive the rotating member 144 to rotate, the positioning post 1442 and the shaft hole of the positioning cylinder 1422 are matched to ensure that the distance between the outer periphery of the rotating member 144 and the inner side wall of the base 143 is kept relatively constant, so that when the abutting member 147 rotates relative to the rotating member 144, the phenomenon of being clamped or having a slightly larger distance due to the sudden reduction of the distance between the outer periphery of the rotating member 144 and the inner side wall of the base 143 is avoided, and advantages are brought to the manufacturing process, specifically, the matching accuracy of the valve rod 120 and the shaft hole 1444 is not so high, and thus the cost can be reduced.

Referring to fig. 1, 2, 15 and 16, in some embodiments, the plug valve 100 further includes a micro switch 150, the micro switch 150 is detachably connected to the exterior of the valve body 110, wherein the detachable connection may be a snap connection using a snap, a plug connection using a pin, or a screw connection, and in order to achieve simplicity of the overall structure and facilitate assembly, the micro switch 150 is fixed to the damping switch 140 and the valve body 110 through a connecting member. The connecting bracket 1434 is provided with a connecting hole 1435, the valve body 110 is provided with a locking hole 1126 on the valve cover 112, the microswitch 150 is provided with a mounting hole 151 which aligns the connecting hole 1435 and the locking hole 1126, and the damping switch 140, the microswitch 150 and the valve body 110 are fixed together by a connecting piece which passes through the connecting hole 1435 and the mounting hole 151 and is locked at the locking hole 1126. The microswitch 150 is located between the damping switch 140 and the valve body 110, and as can be seen from the above, the plug valve 100 of the present application has a safe starting mechanism, in the opening process, the valve rod 120 needs to be firstly pressed through the knob, then the microswitch 150 is used for detecting the contact with the valve rod 120 in the process of pressing down the valve rod 120, when the microswitch 150 is triggered in the process of pressing down the valve rod 120, the microswitch 150 is changed from a normally open state to a switch-on state, and when a signal is given to pulse control discharge, then the ignition switch ignites. Specifically, the bonnet 112 includes a bonnet main body 1121, a connecting cylinder 1122 connected to the bonnet main body 1121 and extending upward, the valve stem 110 is inserted into the valve body 110 through the connecting cylinder 1122, wherein the connecting cylinder 1122 is provided with a radially through notch 1123, and a probe of the microswitch 150 is inserted through the notch 1123 to be able to contact the valve stem 120 for detection, so as to control the opening of the plug valve 100 in a manner triggered by the valve stem 120, thereby realizing the safe starting of the plug valve 100. Also through the above-mentioned connection structure setting, this application plug valve 100 is together fixed with the three through simple structure for overall structure obtains simplifying. Further, in order to improve the stability of the connection structure, please refer to fig. 14 and 16, the valve cap 112 further includes an overlapping portion 1124 connected to the valve cap main body 1121, wherein the locking hole 1126 is opened in the overlapping portion 1124, a plurality of retaining walls are convexly disposed on the overlapping portion 1124, the retaining walls surround to form a retaining groove 1125, the micro switch 150 is embedded in the retaining groove 1125, and by the design of the retaining groove 1125, after the damping switch 140 and the micro switch 150 are locked to the valve cap 112 together through the connection member, the three components will not rotate relatively, and the overall structure is firmer. It can be understood that, in the fixing manner of the damping switch 140 and the micro switch 150, the connecting member may be a snap structure, that is, the damping switch 140 and the micro switch 150 are integrally fixed to the valve body 110 in a snap-fit manner.

Further, in some embodiments, the end of the base body 1431 is provided with an annular groove 1436, and the positioning protrusion 1436 radially protruded from the annular groove 1436, the end of the connecting cylinder 1122 can be embedded in the annular groove 1436 during the assembling process of the damping switch 140, and the positioning protrusion 1436 is snapped into the notch 1123, so that the damping switch 140 can be prevented from moving in the circumferential direction during the fire power adjusting process by the cooperation of the positioning protrusion 1437 and the notch 1123, and the assembling alignment process is simpler.

The setting of damping switch 140 of this application is in order to realize the firepower adjustment in-process, control is more accurate, constant head tank 1443 among the damping switch 140 and a plurality of ventholes among the second air outlet channel 139 belong to corresponding relation, through damping switch 140's setting, can be at case 130 rotation in-process, when inner ring air supply hole 115 docks and communicates a venthole, the piece 147 that supports in the elasticity top supported the subassembly 145 then blocks into a constant head tank 1443, the piece 147 that supports collides and sends the prompt tone with constant head tank 1443, and can ensure that case 130 keeps in this position state.

The following will describe the thermal adjustment process of the plug valve 100 in detail to understand the change of the alignment of the first outlet channel 138 and the outer ring air supply hole 114 and the change of the alignment of the second outlet channel 139 and the inner ring air supply hole 115 in the valve core 130 in cooperation with the damping switch 140.

Referring to fig. 18a and 19a, in the structure shown in fig. 18a and 19a, the valve spool 130 is in a position to close the valve body 110. The first gas outlet passage 138 of the spool 130 does not communicate with the outer ring gas supply hole 114 of the valve body 110, and the second gas outlet passage 139 of the spool 130 does not communicate with the inner ring gas supply hole 115 of the valve body 110.

Referring to fig. 18b and 19b, in the structure shown in fig. 18b and 19b, the valve core 130 is rotated 27 degrees, and it can be seen that the first gas outlet channel 138 of the valve core 130 is not in gas communication with the outer ring gas supply hole 114 of the valve body 110, the second gas outlet channel 139 of the valve core 130 is in gas communication with the inner ring gas supply hole 115 of the valve body 110, and the gas is sprayed to the inner ring nozzle of the burner through the gas supply hole and ignited by the ignition needle.

Referring to fig. 18c and 19c, in the structure shown in fig. 18c and 19c, the valve core 130 is rotated 53 degrees, and it can be seen that the first gas outlet channel 138 of the valve core 130 starts to communicate with the outer ring gas supply hole 114 of the valve body 110, the ignition hole 1397 of the second gas outlet channel 139 of the valve core 130 has completely communicated with the inner ring gas supply hole 115 of the valve body 110, and the gas is ejected from the outer ring nozzle of the burner through the outer ring gas supply hole 114 and ignited by the inner ring flame.

Referring to fig. 18d and 19d, in the structure shown in fig. 18d and 19d, the spool 130 is rotated 90 degrees, and it can be seen that the first through hole 1381 of the first air outlet channel 138 of the spool 130 is completely communicated with the outer ring air supply hole 114 of the valve body 110, and the first air outlet hole 1391 of the second air outlet channel 139 of the spool 130 is completely communicated with the inner ring air supply hole 115 of the valve body 110, because the first through hole 1381 and the first air outlet hole 1391 are holes with larger hole diameters, the gas flow rate that the gas can pass through is the largest, the flame in the burner is the largest, and the inner ring is the outer ring fire.

Referring to fig. 18e and 19e, in the structure shown in fig. 18e and 19e, when the valve core 130 is rotated by 120 degrees, it can be seen that the overlapping area of the first outlet channel 138 of the valve core 130 and the outer ring air supply hole 114 on the valve body 110 changes, the area of the gas passing through per unit time becomes smaller, so that the output of the gas flow rate becomes smaller, the overlapping area of the first outlet hole 1391 in the second outlet channel 139 of the valve core 130 and the inner ring air supply hole 115 of the valve body 110 becomes smaller, the second outlet hole 1392 is also completely communicated with the inner ring air supply hole 115 of the valve body 110, the inner ring flow rate at this time is determined by the remaining contact area of the first outlet hole 1391 and the aperture area of the through hole of the second outlet hole 1392, the area becomes smaller, so that the inner ring flow rate also becomes smaller, and the inner ring is a big fire at this time.

Referring to fig. 18f and 19f, in the structure shown in fig. 18f and 19f, the valve core 130 rotates 150 degrees, it can be seen that the overlapping area of the first outlet channel 138 of the valve core 130 and the outer ring air supply hole 114 of the valve body changes, the area of the gas passing through per unit time becomes small, so that the output of the gas flow rate becomes small, the through hole 1392 and the third outlet hole 1393 of the second outlet channel 139 of the valve core 130 are already completely communicated with the inner ring air supply hole 115 of the valve body 110, the area of the third outlet hole 1393 is smaller than the remaining contact area of the first outlet hole 1391 in the 120 degree state, the inner ring flow rate is smaller than the flow rate in the 120 degree state, the hole diameter becomes small, so that the inner ring flow rate also becomes small, and the inner ring is the inner ring pilot ring in the outer ring.

Referring to fig. 18g and 19g, in the structure shown in fig. 18g and 19g, when the valve core 130 rotates 180 degrees, it can be seen that the overlapping area of the first air outlet channel 138 of the valve core 130 and the outer ring air supply hole 114 of the valve body 110 is changed, the area through which the gas passes per unit time is reduced, so that the gas flow output is reduced, and at this time, the outer ring flow is already small; the first outlet port 1391 of the second outlet passage 139 of the spool 130 is no longer in communication with the inner ring supply port 115 and the third outlet port 1393 continues to be in full communication with the inner ring supply port 115 of the valve body 110 so that the inner ring flow rate is less than 150 degrees at 180 degrees, which is an outer ring flare-up and an inner ring flare-up.

From the above, the four flow ranges from 90 degrees to 180 degrees are changed, and the outer ring and the inner ring are both enlarged or reduced synchronously.

Referring to fig. 18h and 19h, in the structure shown in fig. 18h and 19h, the valve core 130 rotates 210 degrees, and it can be seen that the first air outlet channel 138 of the valve core 130 is not completely communicated with the outer ring air supply hole 114 of the valve body 110, and the outer ring is flameless; the third outlet port 1393 of the second outlet passage 139 of the spool 130 is no longer connected to the inner ring air supply port 115, the fourth outlet port 1394 is completely connected to the inner ring air supply port 115 of the valve body 110, the diameter of the fourth outlet port 1394 is large, the gas flow of the inner ring is large, and the outer ring has no fire and the inner ring has a large fire.

Referring to fig. 18i and 19i, in the structure shown in fig. 18i and 19i, the valve core 130 rotates 240 degrees, and it can be seen that the first air outlet channel 138 of the valve core 130 is completely disconnected from the outer ring air supply hole 114 of the valve body 110, and the outer ring is flameless; the fourth outlet hole 1394 of the second outlet channel 139 of the valve core 130 is no longer communicated with the inner ring air supply hole 115, the fifth outlet hole 1395 starts to be completely communicated with the inner ring air supply hole 115 of the valve body 110, the hole diameter of the fifth outlet hole 1395 is smaller, the gas flow of the inner ring is reduced, and the outer ring has no fire and the inner ring has no fire.

Referring to fig. 18j and 19j, in the structure shown in fig. 18j and 19j, the valve core 130 rotates 270 degrees, and it can be seen that the first air outlet channel 138 of the valve core 130 is not completely communicated with the outer ring air supply hole 114 of the valve body 110, and the outer ring is flameless; the fifth outlet hole 1395 of the second outlet passage 139 of the spool 130 has no longer communicated with the inner ring supply hole 115, and the sixth outlet hole 1396 starts to communicate completely with the inner ring supply hole 115 of the valve body 110, at which time the hole diameter of the sixth outlet hole 1396 is smaller than the hole diameter of the fifth outlet hole 1395, the inner ring gas flow rate decreases, and at which time the outer ring has no fire and the inner ring has little fire.

From the above, the plug valve 100 of the present application has a plurality of air outlet hole structures in the second air outlet channel 139, and the plug valve is matched with the positioning function of the damping switch 140 to realize the precise control of the size of the inner ring flame, so as to meet different cooking requirements of people.

The above description is only an alternative embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.