CN219866406U - gas valve - Google Patents

Abstract

The utility model relates to a gas valve and a gas stove, which belong to the technical field of gas valves and comprise a valve body, a valve core, a gas inlet cavity, an inner ring gas outlet hole and an outer ring gas outlet hole, wherein a gas inlet channel, an inner ring gas outlet channel and an outer ring gas outlet channel are arranged in the valve body, the valve core is rotatably arranged in the valve body, a distribution cavity is arranged in the valve body, the gas inlet cavity is arranged on the side wall of the valve core and communicated with the distribution cavity and is used for conveying gas in the gas inlet channel into the distribution cavity, and the superposition area of the gas inlet cavity and the gas inlet channel is increased or decreased along with the rotation movement of the valve core. According to the utility model, the gas quantity distributed into the inner ring gas outlet channel through the inner ring gas outlet holes and the gas quantity distributed into the outer ring gas outlet channel through the outer ring gas outlet holes are increased or decreased along with the rotation movement of the valve core, so that the fire behaviors of the inner ring fire and the outer ring fire are increased or decreased along with the rotation movement of the valve core, and the synchronous adjustment of the inner ring fire and the outer ring fire is realized.

Description

Gas valve

Technical Field

The utility model relates to a gas valve, and belongs to the technical field of gas valves.

Background

Gas valves in various gas cookers are manually operated valves that control the supply of a gas source, and household gas cookers typically have an inner ring fire and an outer ring fire. The common double-channel gas valve generally comprises a valve body with an air inlet channel, an inner ring nozzle air outlet channel and an outer ring nozzle air outlet channel inside, a rotatable valve core is arranged in the valve body, a spring cavity is arranged on the upper portion of the valve core, a vent cavity is arranged on the lower portion of the valve core, a valve rod capable of driving the valve core to rotate is arranged on the valve body in a penetrating manner, a spring which enables the valve rod to move upwards and separate from the connection trend with the valve core is held at the lower end of the valve rod, the spring is positioned in the spring cavity on the valve core, a series of outer ring fire holes which are used for communicating the air inlet channel and the outer ring nozzle air outlet channel and are different in size are formed in the side wall of the vent cavity of the valve core, and arc-shaped inner ring fire holes used for communicating the air inlet channel and the inner ring nozzle air outlet channel are formed.

In the rotating process of the valve core in the gas valve, the fire behavior of the inner ring fire cannot be adjusted because the aperture size of the inner ring fire hole is unchanged all the time. When the small fire is used for frying eggs or spreading cakes, the fire of the outer ring fire is reduced, and the fire of the inner ring fire is still larger, so that the middle part of the fried eggs or the pancake is easy to coke, and the quality of food is affected.

Therefore, in order to achieve synchronous regulation of the inner ring fire and the outer ring fire, a new gas valve with an optimized structure is needed.

Disclosure of Invention

The utility model aims to provide a gas valve capable of realizing synchronous adjustment of inner ring fire and outer ring fire.

The present utility model provides a gas valve having the features that it comprises:

the valve body is internally provided with an air inlet channel, an inner ring air outlet channel and an outer ring air outlet channel;

the valve core is rotatably arranged in the valve body and is internally provided with a distribution cavity;

the air inlet cavity is arranged on the side wall of the valve core and is communicated with the distribution cavity, and is used for supplying fuel gas in the air inlet channel to the distribution cavity, and the superposition area of the air inlet cavity and the air inlet channel is increased or decreased along with the rotary motion of the valve core;

the inner ring air outlet hole is arranged on the valve core and communicated with the distribution cavity and is used for conveying the fuel gas in the distribution cavity into the inner ring air outlet channel; and

the outer ring air outlet hole is arranged on the valve core and communicated with the distribution cavity and is used for conveying the fuel gas in the distribution cavity into the outer ring air outlet channel.

In the gas valve provided by the utility model, the characteristics can be as follows:

the outer ring air outlet holes are arranged on the side wall of the valve core, and the superposition area of the outer ring air outlet holes and the outer ring air outlet channel synchronously changes along with the superposition area of the air inlet cavity and the air inlet channel.

In the gas valve provided by the utility model, the characteristics can be as follows:

the inner ring air outlet holes are arranged at the first end of the valve core, and the superposition area of the inner ring air outlet holes and the inner ring air outlet channel is kept unchanged along with the rotary motion of the valve core.

The gas valve provided by the utility model can further have the characteristics that:

the air inlet is arranged on the side wall of the valve core and is communicated with the distribution cavity, and is used for supplying the fuel gas in the air inlet channel to the distribution cavity when the superposition area of the outer ring air outlet hole and the outer ring air outlet channel is zero.

In the gas valve provided by the utility model, the characteristics can be as follows:

when the valve core is positioned at a first angle, the superposition area of the air inlet cavity and the air inlet channel is maximum;

when the valve core rotates from the first angle to the second angle, the superposition area of the air inlet cavity and the air inlet channel is gradually reduced, and the superposition area of the outer ring air outlet hole and the outer ring air outlet channel is gradually reduced.

In the gas valve provided by the utility model, the characteristics can be as follows:

when the valve core rotates from the second angle to the third angle, the superposition area of the air inlet cavity and the air inlet channel is continuously reduced, and the superposition area of the outer ring air outlet hole and the outer ring air outlet channel is continuously reduced until the superposition area is zero;

and when the valve core rotates from the third angle to the fourth angle, the overlapping area of the air inlet cavity and the air inlet channel is continuously reduced until the overlapping area is zero, and the overlapping area of the air inlet hole and the air inlet channel is gradually increased.

In the gas valve provided by the utility model, the characteristics can be as follows:

the outer wall of the valve core is provided with a first conical surface, and the outer wall of the valve core is provided with a concave part for placing a sealing ring.

In the gas valve provided by the utility model, the characteristics can be as follows:

wherein, the valve core is also provided with an adjusting cavity communicated with the second end of the distributing cavity,

the air inlet is directly communicated with the adjusting cavity, thereby being indirectly communicated with the distributing cavity,

the gas valve also comprises an adjusting screw which is arranged in the adjusting cavity and is used for adjusting the air inlet area of the air inlet hole,

the outer wall of the tail end of the adjusting screw is provided with a second conical surface, and the overlapping area of the second conical surface and the air inlet hole can be adjusted when the adjusting screw rotates.

The gas valve provided by the utility model can further have the characteristics that:

the valve rod is rotatably arranged in the valve body and used for driving the valve core to rotate, one end of the valve rod is connected with the valve core, the other end of the valve rod is connected with the knob,

wherein, the gas valve still includes ignition trigger assembly, and it includes:

the trigger piece is fixed on the valve rod and is provided with a trigger convex part and a avoidance concave part; and

a micro switch fixed on the valve body with the contact point facing the trigger piece,

when the valve core is at the initial position, the avoidance concave part is used for avoiding the contact of the micro switch;

when the valve core rotates a certain angle from the initial position, the trigger convex part is abutted with the contact of the micro switch, so that the micro switch is triggered.

In the gas valve provided by the utility model, the characteristics can be as follows:

wherein, a rotating cavity for the valve rod to rotate is arranged in the valve body, two fixing rods which are oppositely arranged are arranged on the valve body and are used for being connected with the main body of the gas stove,

the centers of the two fixing rods and the center of the rotating cavity are positioned on the same straight line.

Therefore, compared with the prior art, the utility model has the following advantages:

according to the gas valve, the gas valve comprises a valve body, a valve core, an air inlet cavity, an inner ring air outlet hole and an outer ring air outlet hole, wherein the air inlet channel, the inner ring air outlet channel and the outer ring air outlet channel are arranged in the valve body, the valve core is rotatably arranged in the valve body, the distribution cavity is arranged in the valve body, the air inlet cavity is arranged on the side wall of the valve core and communicated with the distribution cavity and is used for supplying gas in the air inlet channel to the distribution cavity, the overlapping area of the air inlet cavity and the air inlet channel is increased or decreased along with the rotation of the valve core, the gas in the air inlet channel is conveyed into the distribution cavity through the air inlet cavity, the gas conveyed into the distribution cavity is distributed into the inner ring air outlet channel through the inner ring air outlet hole, and the gas conveyed into the outer ring air outlet channel through the outer ring air outlet hole is distributed into the inner ring air outlet channel on the one hand, and the inner ring air and the outer ring air outlet channel are simultaneously ventilated through the outer ring air outlet hole, and the ignition needle ignites the overlapping area of the air inlet cavity and the air inlet channel is increased or decreased along with the rotation of the valve core, and accordingly the gas quantity conveyed into the inner ring air outlet channel is increased or decreased along with the rotation of the inner ring air outlet channel, and the gas is correspondingly increased or decreased along with the rotation of the inner ring air outlet channel, and the inner ring air is rotated along with the inner ring and the inner ring air is rotated.

Drawings

FIG. 1 is a schematic perspective view of a gas valve according to an embodiment of the present utility model;

FIG. 2 is a schematic cross-sectional view of a valve element in a first direction at a first angle in an embodiment of the present utility model;

FIG. 3 is a schematic cross-sectional view of a valve element in a second direction at a first angle in an embodiment of the present utility model;

FIG. 4 is a schematic cross-sectional view of a valve element in a fourth angle according to an embodiment of the present utility model;

FIG. 5 is a schematic perspective view of a first direction of a valve element according to an embodiment of the present utility model;

FIG. 6 is a schematic perspective view of a valve core in a second direction according to an embodiment of the present utility model;

FIG. 7 is a schematic diagram showing a second perspective structure of the valve core in the first direction according to the embodiment of the present utility model;

FIG. 8 is a schematic cross-sectional view of a valve cartridge in an embodiment of the utility model;

FIG. 9 is a schematic perspective view of an adjusting screw according to an embodiment of the present utility model;

FIG. 10 is a schematic diagram showing a second perspective view of a valve element in a second direction according to an embodiment of the present utility model;

FIG. 11 is a schematic perspective view of an ignition trigger assembly according to an embodiment of the present utility model;

fig. 12 is a schematic perspective view of a trigger according to an embodiment of the present utility model.

The index marks in the drawings are as follows:

a gas valve 100;

a valve body 10; an intake passage 11; an inner ring gas outlet channel 12; an outer ring air outlet channel 13; a rotation chamber 14; a fixing rod 15;

a valve core 20; a distribution chamber 21; a conditioning chamber 22; a first conical surface 23; a recess 24;

an air intake chamber 30; a main intake chamber 31; an air intake hole portion 311; a transition hole portion 312; a split air inlet chamber 32;

an inner ring air outlet hole 40;

an outer ring air outlet hole 50;

an air intake hole 60; a first hole portion 61; a second hole portion 62;

an adjusting screw 70; a second conical surface 71;

a valve stem 80;

an ignition trigger assembly 90; a trigger 91; a trigger tab 911; the relief recess 912; a microswitch 92.

Detailed Description

In order to make the technical means, creation features, achievement of the purposes and effects of the present utility model easy to understand, the gas valve of the present utility model is specifically described below with reference to the embodiments and the accompanying drawings.

The embodiment provides a gas valve capable of realizing synchronous adjustment of inner ring fire and outer ring fire.

FIG. 1 is a schematic perspective view of a gas valve according to an embodiment of the present utility model; FIG. 2 is a schematic cross-sectional view of a valve element in a first direction at a first angle in an embodiment of the present utility model; FIG. 3 is a schematic cross-sectional view of a valve element in a second direction at a first angle in an embodiment of the present utility model; FIG. 4 is a schematic cross-sectional view of a valve element at a fourth angle in an embodiment of the present utility model.

As shown in fig. 1 to 4, the gas range of the present embodiment includes a gas valve 100, and the gas valve 100 includes a valve body 10, a valve core 20, an intake chamber 30, an inner ring gas outlet hole 40, and an outer ring gas outlet hole 50. An air inlet channel 11, an inner ring air outlet channel 12 and an outer ring air outlet channel 13 are arranged in the valve body 10. The valve core 20 is rotatably provided in the valve body 10, and a distribution chamber 21 is provided inside. An intake chamber 30 is provided at a side wall of the valve body 20 and communicates with the distribution chamber 21 for supplying the fuel gas in the intake passage 11 to the distribution chamber 21. The overlapping area of the intake chamber 30 and the intake passage 11 becomes larger or smaller with the rotational movement of the spool 20. The inner ring air outlet holes 40 are arranged on the valve core 20 and are communicated with the distribution cavity 21, and are used for conveying the fuel gas in the distribution cavity 21 into the inner ring air outlet channel 12. The outer ring air outlet hole 50 is arranged on the valve core 20 and is communicated with the distribution cavity 21, and is used for conveying the fuel gas in the distribution cavity 21 into the outer ring air outlet channel 13.

As can be appreciated, the gas in the gas inlet channel 11 is delivered into the distribution chamber 21 through the gas inlet chamber 30, the gas delivered into the distribution chamber 21 is distributed into the inner ring gas outlet channel 12 through the inner ring gas outlet holes 40, and is distributed into the outer ring gas outlet channel 13 through the outer ring gas outlet holes 50, so that the inner ring fire and the outer ring fire are ventilated simultaneously, and are ignited by the ignition needle, and as the overlapping area of the gas inlet chamber 30 and the gas inlet channel 11 is increased or decreased along with the rotation movement of the valve core 20, the gas quantity delivered into the distribution chamber 21 is increased or decreased along with the rotation movement of the valve core 20, and accordingly, the gas quantity distributed into the inner ring gas outlet channel 12 through the inner ring gas outlet holes 40 and the gas quantity distributed into the outer ring gas outlet channel 13 through the outer ring gas outlet holes 50 is increased or decreased along with the rotation movement of the valve core 20, so that the fire behaviors of the inner ring fire and the outer ring fire are increased or decreased along with the rotation movement of the valve core 20, and the synchronous adjustment of the inner ring fire and the outer ring fire is realized.

Fig. 5 is a schematic perspective view of a first direction of a valve core according to an embodiment of the present utility model.

As shown in fig. 2 and 5, the outer ring air outlet holes 50 are provided on the side wall of the valve core 20, and the overlapping area of the outer ring air outlet holes 50 and the outer ring air outlet channel 13 changes synchronously with the overlapping area of the air inlet cavity 30 and the air inlet channel 11.

It can be appreciated that when the overlapping area of the air inlet cavity 30 and the air inlet channel 11 is increased or decreased, the overlapping area of the outer ring air outlet holes 50 and the outer ring air outlet channel 13 is also increased or decreased, so that the fire intensity of the outer ring fire can be more accurately regulated.

As shown in fig. 2 and 5, the inner ring air outlet holes 40 are provided at the first end of the valve core 20, and the overlapping area of the inner ring air outlet holes 40 and the inner ring air outlet channel 12 remains unchanged along with the rotary movement of the valve core 20.

It will be appreciated that when the amount of fuel gas delivered into the distribution chamber 21 increases or decreases with the rotational movement of the valve spool 20, the amount of fuel gas distributed into the inner ring gas outlet passage 12 through the inner ring gas outlet holes 40 correspondingly increases or decreases, so that the fire of the inner ring fire increases or decreases with the rotational movement of the valve spool 20, thereby achieving the adjustment of the fire intensity of the outer ring fire.

Fig. 6 is a schematic perspective view of a valve core in a second direction according to an embodiment of the present utility model.

As shown in fig. 4 and 6, the gas valve 100 further includes a gas inlet hole 60 provided at a side wall of the valve core 20 and communicating with the distribution chamber 21 for supplying the gas in the gas inlet passage 11 to the distribution chamber 21 when the overlapping area of the outer ring gas outlet hole 50 and the outer ring gas outlet passage 13 is zero.

It will be appreciated that when the overlapping area of the outer ring air outlet holes 50 and the outer ring air outlet channel 13 is zero, the fuel gas in the air inlet channel 11 can be conveyed into the distribution cavity 21 through the air inlet holes 60, and the fuel gas conveyed into the distribution cavity 21 is distributed into the inner ring air outlet channel 12 through the inner ring air outlet holes 40, so that the inner ring fire is kept in a small fire state, and the outer ring fire is extinguished at the moment, so that the inner ring fire is later than the outer ring fire in the fire closing process, and the inner ring fire can be still burnt after the outer ring fire is extinguished.

As shown in fig. 2 to 3, when the spool 20 is at the first angle, the overlapping area of the intake chamber 30 and the intake passage 11 is maximized. When the valve core 20 rotates from the first angle to the second angle, the overlapping area of the air inlet cavity 30 and the air inlet channel 11 is gradually reduced, and the overlapping area of the outer ring air outlet holes 50 and the outer ring air outlet channel 13 is gradually reduced.

It will be appreciated that when the valve core 20 is at the second angle, the fire intensity of the inner ring fire and the outer ring fire is maximized, and when the valve core 20 rotates from the first angle to the second angle, the amount of the fuel gas delivered into the distribution chamber 21 through the gas inlet chamber 30 is gradually reduced, so that the amount of the fuel gas distributed into the inner ring gas outlet channel 12 and the outer ring gas outlet channel 13 is gradually reduced, the fire intensity of the inner ring fire and the outer ring fire is gradually reduced in the process, and the fire intensity of the inner ring fire and the outer ring fire is gradually increased in the process of rotating from the second angle to the first angle relatively to the valve core 20, so that synchronous adjustment of the fire intensity of the inner ring fire and the outer ring fire can be realized.

As shown in fig. 2 to 3, when the valve core 20 rotates from the second angle to the third angle, the overlapping area of the air inlet chamber 30 and the air inlet channel 11 continues to decrease, and the overlapping area of the outer ring air outlet holes 50 and the outer ring air outlet channel 13 continues to decrease until zero.

As can be appreciated, when the valve core 20 rotates from the second angle to the third angle, the amount of the fuel gas conveyed into the distribution chamber 21 through the air inlet chamber 30 is further reduced, so that the fire of the inner ring fire in the process is further reduced, and finally the inner ring fire is kept in a small fire state, and when the overlapping area of the outer ring air outlet holes 50 and the outer ring air outlet channels 13 is reduced to zero, the fuel gas in the distribution chamber 21 cannot be distributed into the outer ring air outlet channels 13 through the outer ring air outlet holes 50, so that the fire of the outer ring fire in the process is further reduced until the outer ring air outlet channels 13 are extinguished;

as shown in fig. 4, when the valve core 20 rotates from the third angle to the fourth angle, the overlapping area of the intake chamber 30 and the intake passage 11 continues to decrease until it is zero, and the overlapping area of the intake hole 60 and the intake passage 11 gradually increases.

It will be appreciated that, when the valve core 20 rotates from the third angle to the fourth angle, the overlapping area of the air inlet cavity 30 and the air inlet channel 11 continues to decrease until zero, and the overlapping area of the air inlet hole 60 and the air inlet channel 11 gradually increases, and when the overlapping area of the air inlet cavity 30 and the air inlet channel 11 decreases until zero, the fuel gas in the air inlet channel 11 cannot enter the air inlet cavity 30, and at this time, the fuel gas in the air inlet channel 11 is conveyed into the distribution cavity 21 through the air inlet hole 60, and the fuel gas conveyed into the distribution cavity 21 is distributed into the inner ring air outlet channel 12 through the inner ring air outlet holes 40, so that the fire condition of the inner ring fire in the process is further reduced, and finally kept in a small fire state, and the inner ring fire is later than the outer ring fire in the fire closing process, so that the inner ring fire can be ensured to burn after the outer ring fire is extinguished.

As shown in fig. 6, the outer wall of the valve core 20 is provided with a first tapered surface 23, and the outer wall of the valve core 20 is provided with a recess 24 for placing a seal ring.

It can be appreciated that the valve core 20 and the valve body 10 have better sealing effect, and leakage of fuel gas can be effectively prevented.

Fig. 7 is a schematic diagram showing a second perspective structure of the valve core in the first direction in the embodiment of the utility model.

As shown in fig. 7, the intake chamber 30 includes a main intake chamber 31 and a sub-intake chamber 32. A main intake chamber 31 is provided at a side wall of the spool 20 and communicates with the distribution chamber 21. The split intake chamber 32 is provided at a side wall of the spool 20 and communicates with the main intake chamber 31.

When the valve core 20 is at the first angle, the overlapping area of the main air inlet cavity 31 and the air inlet channel 11 is maximum, and when the valve core 20 rotates from the first angle to the second angle, the overlapping area of the main air inlet cavity 31 and the air inlet channel 11 is gradually reduced, and the overlapping area of the sub air inlet cavity 32 and the air inlet channel 11 is gradually increased; when the valve core 20 rotates from the second angle to the third angle, the overlapping area of the main air inlet cavity 31 and the air inlet channel 11 is gradually reduced until the overlapping area is zero, and the overlapping area of the sub air inlet cavity 32 and the air inlet channel 11 is continuously increased; during the rotation of the valve spool 20 from the third angle to the fourth angle, the overlapping area of the split intake chamber 32 and the intake passage 11 gradually decreases until zero.

As will be appreciated, when the valve spool 20 is at the first angle, fuel gas in the inlet passage 11 is delivered into the distribution chamber 21 through the main inlet chamber 31; when the valve core 20 rotates from the first angle to the second angle, the fuel gas in the air inlet channel 11 simultaneously enters the main air inlet cavity 31 and the branch air inlet cavity 32 and then is conveyed into the distribution cavity 21 together; when the valve core 20 rotates from the second angle to the third angle, the fuel gas in the air inlet channel 11 firstly enters the main air inlet cavity 31 and the branch air inlet cavity 32 at the same time, and when the overlapping area of the main air inlet cavity 31 and the air inlet channel 11 is zero, the fuel gas in the air inlet channel 11 only enters the branch air inlet cavity 32; when the valve core 20 rotates from the third angle to the fourth angle, the fuel gas in the air inlet channel 11 firstly enters the air dividing cavity 32 and the air inlet hole 60 at the same time, and when the overlapping area of the air dividing cavity 32 and the air inlet channel 11 is zero, the fuel gas in the air inlet channel 11 only enters the air inlet hole 60.

As shown in fig. 7, the main intake chamber 31 extends in the axial direction of the spool 20, and the branch intake chamber 32 extends in the circumferential direction of the spool 20. The main intake chamber 31 includes an intake hole portion 311 and a transition hole portion 312. The air intake hole portion 311 communicates with the distribution chamber 21. The transition hole portion 312 communicates with the intake hole portion 311 and is for selectively communicating with the intake passage 11. The partial intake chamber 32 communicates with the transition bore portion 312.

As can be appreciated, in the rotation process of the valve core 20, the overlapping areas of the main air inlet cavity 31, the branch air inlet cavity 32 and the air inlet channel 11 can be changed, so as to control the inner ring fire and the outer ring fire, and the fuel gas entering the main air inlet cavity 31 and the transition hole portion 312 finally enters the distribution cavity 21 through the air inlet hole portion 311, and the position of the air inlet hole portion 311 is moved downwards by setting the transition hole portion 312, so that the air inlet hole portion 311 is prevented from interfering with the internal structure of the valve core 20.

In this embodiment, the air inlet hole 311 is a circular hole, the transition hole 312 is a waist-shaped hole, and the air inlet cavity 32 is a groove.

FIG. 8 is a schematic cross-sectional view of a valve cartridge in an embodiment of the utility model; fig. 9 is a schematic perspective view of an adjusting screw according to an embodiment of the present utility model.

As shown in fig. 8 to 9, the valve core 20 is further provided inside with a regulating chamber 22 communicating with the second end of the distribution chamber 21, and the air intake hole 60 communicates directly with the regulating chamber 22, thereby communicating indirectly with the distribution chamber 21. The gas valve 100 further includes an adjusting screw 70 provided in the adjusting chamber 22 for adjusting the intake area of the intake hole 60. The outer wall of the tail end of the adjusting screw 70 is provided with a second conical surface 71, and the overlapping area of the second conical surface 71 and the air inlet hole 60 can be adjusted when the adjusting screw 70 rotates.

It will be appreciated that when the valve core 20 rotates to the fourth angle, the fuel gas in the air inlet channel 11 is delivered into the distribution chamber 21 through the air inlet hole 60, and the overlapping area of the second conical surface 71 and the air inlet hole 60 can be adjusted by rotating the adjusting screw 70, so that the air inlet area of the air inlet hole 60 can be adjusted, the air inlet amount of the air inlet hole 60 can be adjusted, and the fuel gas distributed into the inner ring air outlet channel 12 can be adjusted, so that the minimum fire of the inner ring fire can be set at the time of factory shipment.

As shown in fig. 8, the end of the adjustment chamber 22 that is opposite from the dispensing chamber 21 is provided with an opening, and the head end of the adjustment screw 70 is directed toward the opening.

It will be appreciated that an external tool may be allowed to extend into the adjustment chamber 22 to rotate the adjustment screw 70 so as to adjust the area of overlap of the second conical surface 71 with the air inlet aperture 60.

Fig. 10 is a schematic diagram showing a second perspective structure of the valve core in the second direction in the embodiment of the present utility model.

As shown in fig. 10, the intake hole 60 includes a first hole portion 61 and a second hole portion 62. The first hole portion 61 is for communication with the adjustment chamber 22. The second hole portion 62 is for communicating with the intake passage 11. The cross-sectional dimension of the first hole portion 61 is smaller than the cross-sectional dimension of the second hole portion 62.

It will be appreciated that when the valve core 20 is rotated to the fourth angle, the fuel gas in the inlet passage 11 enters the second hole portion 62 and is delivered into the regulating chamber 22 through the first hole portion 61, since the first hole portion 61 has a smaller cross-sectional size so as to control the small fire of the inner ring fire, and since the second hole portion 62 has a larger cross-sectional size so as to be engaged with the inlet passage 11 during the rotation of the valve core 20.

FIG. 11 is a schematic perspective view of an ignition trigger assembly according to an embodiment of the present utility model; fig. 12 is a schematic perspective view of a trigger according to an embodiment of the present utility model.

As shown in fig. 11 to 12, the gas valve 100 further includes a valve stem 80 rotatably provided in the valve body 10 for driving the valve core 20 to rotate, with one end connected to the valve core 20 and the other end connected to the knob. The gas valve 100 also includes an ignition trigger assembly 90 that includes a trigger 91 and a micro-switch 92. The trigger 91 is fixed to the valve stem 80, and is provided with a trigger protrusion 911 and a relief recess 912. A microswitch 92 is fixed to the valve body 10 with the contacts facing the trigger 91. When the valve body 20 is in the initial position, the escape recess 912 escapes the contact of the microswitch 92. When the valve body 20 rotates from the initial position by a certain angle, the trigger protrusion 911 abuts against the contact of the micro switch 92, thereby triggering the micro switch 92.

It will be appreciated that when the valve rod 80 drives the valve core 20 to rotate a certain angle from the initial position, the micro switch 92 is always communicated under the action of the trigger protrusion 911, and when unexpected flameout occurs in the process of continuing to rotate the valve core 20, the micro switch 92 can send a signal to automatically re-ignite the gas stove.

In the present embodiment, the trigger 91 is cylindrical, the circumferential outer wall of the trigger 91 forms a trigger protrusion 911, and the circumferential outer wall of the trigger 91 is formed with a recess that forms a relief recess 912.

In this embodiment, the valve rod 80 is connected with the valve core 20 through a key, the key is arranged on the outer wall of the valve rod 80, a key groove matched with the key is arranged on the side wall of the valve core 20, and when the key on the valve rod 80 is matched with the key groove on the valve core 20, the valve rod 80 can drive the valve core 20 to rotate.

As shown in fig. 11, a rotating cavity 14 for rotating a valve rod 80 is provided inside the valve body 10, and two fixing rods 15 are provided on the valve body 10, which are provided opposite to each other, for connection with a gas cooker body. The centers of the two fixing rods 15 and the center of the rotating chamber 14 are on the same straight line.

It can be appreciated that, by the restriction of the two fixing rods 15 and the rotating chamber 14, concentricity of the valve rod 80 in the rotating chamber 14 can be ensured, so that smoothness in the rotating process of the valve rod 80 can be ensured.

The working principle and process of the gas valve 100 in this embodiment are as follows:

when the valve core 20 is at the initial position (angle is 0 °), the fuel gas in the air inlet channel 11 cannot be conveyed into the distribution chamber 21 through the air inlet chamber 30, and the fuel gas valve 100 is in a closed state;

when the valve core 20 is at a first angle (90 degrees), the fire behaviors of the inner ring fire and the outer ring fire reach the maximum, the valve core 20 rapidly rotates to the first angle (90 degrees) from an initial position (the angle is 0 degrees) during ignition, and the process acts rapidly, so that the valve core 20 rotates to the position of the maximum fire at one time;

when the valve core 20 rotates from the first angle (90 degrees) to the second angle (135 degrees), the amount of the fuel gas conveyed into the distribution cavity 21 through the air inlet cavity 30 is gradually reduced, so that the amount of the fuel gas distributed into the inner ring air outlet channel 12 and the outer ring air outlet channel 13 is gradually reduced, and the fire of the inner ring fire and the fire of the outer ring fire are gradually reduced in the process, so that synchronous adjustment of the fire of the inner ring fire and the fire of the outer ring fire can be realized;

when the valve core 20 rotates from the second angle (135 degrees) to the third angle (180 degrees), the amount of the fuel gas conveyed into the distribution cavity 21 through the gas inlet cavity 30 is further reduced, so that the fire of the inner ring fire in the process is further reduced, and finally the fuel gas is kept in a small fire state, and when the overlapping area of the outer ring gas outlet holes 50 and the outer ring gas outlet channels 13 is reduced to zero, the fuel gas in the distribution cavity 21 cannot be distributed into the outer ring gas outlet channels 13 through the outer ring gas outlet holes 50, so that the fire of the outer ring fire in the process is further reduced until the fuel gas is extinguished;

when the valve core 20 rotates from the third angle (180 degrees) to the fourth angle (230 degrees), the overlapping area of the air inlet cavity 30 and the air inlet channel 11 is continuously reduced until zero, meanwhile, the overlapping area of the air inlet hole 60 and the air inlet channel 11 is gradually increased, when the overlapping area of the air inlet cavity 30 and the air inlet channel 11 is reduced to zero, fuel gas in the air inlet channel 11 cannot enter the air inlet cavity 30, at the moment, the fuel gas in the air inlet channel 11 is conveyed into the distribution cavity 21 through the air inlet hole 60, and the fuel gas conveyed into the distribution cavity 21 is distributed into the inner ring air outlet channel 12 through the inner ring air outlet holes 40, so that the fire situation of the inner ring fire is further reduced in the process, finally kept in a small fire state, and the inner ring fire is later than the outer ring fire in the fire closing process, so that the inner ring fire can be ensured to burn after the outer ring fire is extinguished.

Effects and effects of the examples

According to the gas valve, the gas valve comprises a valve body, a valve core, an air inlet cavity, an inner ring air outlet hole and an outer ring air outlet hole, wherein the air inlet channel, the inner ring air outlet channel and the outer ring air outlet channel are arranged in the valve body, the valve core is rotatably arranged in the valve body, the distribution cavity is arranged in the valve body, the air inlet cavity is arranged on the side wall of the valve core and communicated with the distribution cavity and is used for supplying gas in the air inlet channel to the distribution cavity, the overlapping area of the air inlet cavity and the air inlet channel is increased or decreased along with the rotation of the valve core, the gas in the air inlet channel is conveyed into the distribution cavity through the air inlet cavity, the gas conveyed into the distribution cavity is distributed into the inner ring air outlet channel through the inner ring air outlet hole, and the gas in the outer ring air outlet channel is distributed into the outer ring air outlet channel through the outer ring air outlet hole, so that inner ring fire and outer ring fire can be simultaneously ventilated, and the amount of gas in the distribution cavity is increased or decreased along with the rotation of the valve core, and the gas in the outer ring is correspondingly increased or decreased along with the rotation of the valve core, and the gas in the outer ring fire is synchronously adjusted along with the rotation of the inner ring and the outer ring fire.

The above embodiments are only preferred embodiments of the present technical solution, and do not limit the protection scope of the present technical solution accordingly, so: all equivalent changes according to the structure, shape and principle of the present technical scheme should be covered in the protection scope of the present technical scheme.

Claims (10)

1. A gas valve, comprising:

a valve body (10) provided with an air inlet channel (11), an inner ring air outlet channel (12) and an outer ring air outlet channel (13) inside;

a valve core (20) rotatably arranged in the valve body (10), and a distribution cavity (21) is arranged in the valve core;

the air inlet cavity (30) is arranged on the side wall of the valve core (20) and is communicated with the distribution cavity (21) and is used for conveying the fuel gas in the air inlet channel (11) into the distribution cavity (21), and the overlapping area of the air inlet cavity (30) and the air inlet channel (11) is increased or decreased along with the rotation movement of the valve core (20);

an inner ring air outlet hole (40) which is arranged on the valve core (20) and is communicated with the distribution cavity (21) and is used for conveying the fuel gas in the distribution cavity (21) into the inner ring air outlet channel (12); and

the outer ring air outlet hole (50) is arranged on the valve core (20) and is communicated with the distribution cavity (21) and is used for conveying the fuel gas in the distribution cavity (21) into the outer ring air outlet channel (13).

2. The gas valve of claim 1, wherein:

the outer ring air outlet holes (50) are arranged on the side wall of the valve core (20), and the superposition area of the outer ring air outlet holes (50) and the outer ring air outlet channel (13) synchronously changes along with the superposition area of the air inlet cavity (30) and the air inlet channel (11).

3. The gas valve of claim 1, wherein:

the inner ring air outlet hole (40) is arranged at the first end of the valve core (20), and the superposition area of the inner ring air outlet hole (40) and the inner ring air outlet channel (12) is kept unchanged along with the rotary motion of the valve core (20).

4. A gas valve according to any one of claims 1-3, further comprising:

the air inlet hole (60) is arranged on the side wall of the valve core (20) and is communicated with the distribution cavity (21) and is used for conveying the fuel gas in the air inlet channel (11) into the distribution cavity (21) when the superposition area of the outer ring air outlet hole (50) and the outer ring air outlet channel (13) is zero.

5. The gas valve of claim 4, wherein:

when the valve core (20) is positioned at a first angle, the superposition area of the air inlet cavity (30) and the air inlet channel (11) is maximum;

when the valve core (20) rotates from the first angle to the second angle, the overlapping area of the air inlet cavity (30) and the air inlet channel (11) is gradually reduced, and the overlapping area of the outer ring air outlet hole (50) and the outer ring air outlet channel (13) is gradually reduced.

6. The gas valve of claim 5, wherein:

wherein, when the valve core (20) rotates from the second angle to a third angle, the superposition area of the air inlet cavity (30) and the air inlet channel (11) is continuously reduced, and the superposition area of the outer ring air outlet hole (50) and the outer ring air outlet channel (13) is continuously reduced until the superposition area is zero;

when the valve core (20) rotates from the third angle to the fourth angle, the overlapping area of the air inlet cavity (30) and the air inlet channel (11) is continuously reduced until the overlapping area is zero, and the overlapping area of the air inlet hole (60) and the air inlet channel (11) is gradually increased.

7. A gas valve according to any one of claims 1-3, characterized in that:

the outer wall of the valve core (20) is provided with a first conical surface (23), and the outer wall of the valve core (20) is provided with a concave part (24) for placing a sealing ring.

8. The gas valve of claim 4, wherein:

wherein, an adjusting cavity (22) communicated with the second end of the distributing cavity (21) is also arranged in the valve core (20),

the air inlet (60) is directly communicated with the adjusting cavity (22) and is indirectly communicated with the distributing cavity (21),

the gas valve further comprises an adjusting screw (70) which is arranged in the adjusting cavity (22) and is used for adjusting the air inlet area of the air inlet hole (60),

the outer wall of the tail end of the adjusting screw (70) is provided with a second conical surface (71), and the overlapping area of the conical surface (71) and the air inlet hole (60) can be adjusted when the adjusting screw (70) rotates.

9. A gas valve according to any one of claims 1-3, further comprising:

a valve rod (80) rotatably arranged in the valve body (10) and used for driving the valve core (20) to rotate, one end of the valve rod is connected with the valve core (20), the other end of the valve rod is connected with a knob,

wherein the gas valve further comprises an ignition trigger assembly (90) comprising:

a trigger (91) fixed to the valve rod (80) and provided with a trigger protrusion (911) and a recess (912); and

a microswitch (92) fixed to the valve body (10) with the contact facing the trigger (91),

when the valve core (20) is at an initial position, the avoidance concave part (912) carries out avoidance on the contact of the micro switch (92);

when the valve core (20) rotates a certain angle from the initial position, the trigger convex part (911) is abutted with the contact of the micro switch (92), so that the micro switch (92) is triggered.

10. The gas valve of claim 9, wherein:

wherein a rotating cavity (14) for rotating the valve rod (80) is arranged in the valve body (10), two fixing rods (15) which are oppositely arranged are arranged on the valve body (10) and are used for being connected with a gas stove main body,

the centers of the two fixing rods (15) and the center of the rotating cavity (14) are positioned on the same straight line.