CN215673740U - Gas valve and cooking utensils - Google Patents

Abstract

The utility model discloses a gas cover and a cooker, wherein the gas valve comprises: the gas-fired valve comprises a shell, a deflector rod and a valve rod, wherein a gas channel is arranged in the shell, and the shell is provided with a valve for opening and closing the gas channel and a valve core for adjusting the opening degree of the gas channel; the shifting rod is rotatably connected with the shell, a shifting arm which is constructed into a cantilever shape is arranged on the shifting rod, and an elastic piece is arranged on the shifting arm; the valve rod is connected with the shell in a rotatable and axially movable mode, and is suitable for driving the valve core to rotate so as to adjust the opening degree and driving the shifting rod to rotate so as to drive the elastic piece to open the valve. According to the gas valve provided by the embodiment of the utility model, the impact on the valve for opening the gas channel can be reduced.

Description

Gas valve and cooking utensils

Technical Field

The utility model relates to the technical field of gas equipment, in particular to a gas valve and a cooker with the same.

Background

The gas valve is a core part of a household gas cooker, mainly plays the functions of sealing, adjusting gas firepower, igniting and the like, and in addition, the operation hand feeling of the gas valve is directly sensed by a user, and the quality of the gas valve determines the quality of the cooker.

The working principle of the gas valve is that a valve rod which can be matched with a knob to rotate synchronously is arranged at the upper end of the gas valve, a pin is arranged on the valve rod to be matched with a valve seat and a valve core clamping groove, and a child lock function is formed by matching the valve rod with the valve seat, namely the gas valve can be opened by unlocking the child lock by pressing down in a closed state; the valve core is matched with the valve core to drive the valve core to rotate around the shaft core, the valve core is provided with an outer ring air passage and an inner ring air passage, and the valve body is also provided with an outer ring air hole and an inner ring air hole. The output gas flow is controlled by changing the overlapping area of the upper air passage of the valve core and the air hole of the valve body, so that the change of the firepower of the cooker is controlled.

In the related art, the total stroke of the valve rod is about 3.5mm, the valve needs to be opened in the stroke, and the opening of the valve is generally smaller than the total stroke of the valve rod, so that the valve is impacted in the process of opening the valve through the valve rod, and the service life of the valve is influenced.

SUMMERY OF THE UTILITY MODEL

An aspect of the present invention is to provide a gas valve that can reduce impact on a valve opening a gas passage.

Another aspect of the present invention is to propose a hob including the aforementioned gas valve.

According to an embodiment of an aspect of the present invention, a gas valve includes: the gas-fired valve comprises a shell, a deflector rod and a valve rod, wherein a gas channel is arranged in the shell, and the shell is provided with a valve for opening and closing the gas channel and a valve core for adjusting the opening degree of the gas channel; the shifting rod is rotatably connected with the shell, a shifting arm which is constructed into a cantilever shape is arranged on the shifting rod, and an elastic piece is arranged on the shifting arm; the valve rod is connected with the shell in a rotatable and axially movable mode, and is suitable for driving the valve core to rotate so as to adjust the opening degree and driving the shifting rod to rotate so as to drive the elastic piece to open the valve.

According to the gas valve provided by the embodiment of the utility model, the impact on the valve for opening the gas channel can be reduced.

In addition, the gas valve according to the above embodiment of the present invention may further have the following additional technical features:

optionally, the elastic member includes a fixing portion and a compressing portion, the fixing portion is fixedly connected with the toggle arm, and the compressing portion is connected with the fixing portion and is adapted to be elastically deformed.

Optionally, the fixing portion includes a positioning head and a positioning rod, the positioning head is spaced apart from the toggle arm, and the positioning rod is connected between the positioning head and the toggle arm, so as to form a positioning groove at the periphery of the positioning rod, the compressing portion is sleeved outside the positioning head and embedded in the positioning groove, and a gap is formed between the compressing portion and the end surface of the positioning head.

Optionally, a protruding point is arranged on a side wall of the compression part, which is opposite to the end face of the positioning head, and the protruding point protrudes out of the side wall and is suitable for abutting against and opening the valve.

Optionally, the fixing portion is disposed on a side surface of the toggle arm, and the fixing portion extends in a direction perpendicular to the toggle arm and the toggle lever.

Optionally, a pressing arm is further connected to the shift lever, the pressing arm is configured to be a cantilever connected to the shift lever, and the valve rod is adapted to press against the pressing arm to drive the shift lever to rotate.

Optionally, the pressing arm is perpendicular to the shift lever, and a guide groove extending in a direction perpendicular to the shift lever is configured on the pressing arm.

Optionally, a distance between a position of the depressing arm corresponding to the valve stem and the shift lever is smaller than a distance between a position of the shift arm corresponding to the valve and the shift lever.

Optionally, the gas valve further comprises a valve needle, one end of the valve needle abuts against an end of the valve rod, the other end of the valve needle penetrates through the valve core and abuts against the shift lever, the valve needle extends along the axial direction, and the valve needle is suitable for transmitting the movement of the valve rod along the axial direction to the shift lever so as to drive the shift lever to rotate.

Optionally, the housing includes an installation cavity, the valve is fixedly installed in the installation cavity, a via hole is formed in the installation cavity, and the via hole is respectively opposite to the valve and the elastic member.

Optionally, the gas valve further includes a positioning block, the positioning block is disposed in the housing, the positioning block has a locking position and an unlocking position along the axial direction, the positioning block is locked at the locking position, the positioning block is rotatable at the unlocking position and is adapted to drive the valve core, the positioning block and the valve rod are relatively movable along the axial direction and are fixed along the circumferential relative position, and the positioning block is adapted to be driven by the valve rod.

Optionally, the valve rod has an initial position, a triggering position and a rotating position along the axial direction, the valve rod triggers the gas valve at the triggering position and drives the positioning block to move to the unlocking position at the rotating position, and the stroke C of the valve rod moving from the initial position to the triggering position is not larger than the stroke B of the valve rod moving to the rotating position.

A hob according to another aspect embodiment of the present invention comprises the aforementioned gas valve.

Drawings

FIG. 1 is a schematic view of a gas valve according to one embodiment of the present invention.

FIG. 2 is a sectional view of section P1-P1 of FIG. 1.

FIG. 3 is a cross-sectional view of section P2-P2 of FIG. 1.

FIG. 4 is a sectional view of section P3-P3 of FIG. 1.

Fig. 5 is a schematic view of a valve seat of a gas valve according to an embodiment of the present invention.

Fig. 6 is a schematic view of a valve seat of a gas valve according to an embodiment of the present invention.

Fig. 7 is a schematic view of a valve stem of a gas valve according to an embodiment of the present invention.

FIG. 8 is a schematic view of a positioning member of a gas valve in accordance with an embodiment of the present invention.

Fig. 9 is a schematic view of a positioning block of a gas valve according to an embodiment of the present invention.

Fig. 10 is a schematic view of a stem of a gas valve according to an embodiment of the present invention.

FIG. 11 is a schematic view of a stem of a gas valve according to one embodiment of the present invention.

FIG. 12 is a sectional view of section P4-P4 of FIG. 11.

Fig. 13 is an exploded view of the stem of the gas valve according to one embodiment of the present invention.

Reference numerals: the gas valve 100, the housing 10, the mounting hole 101, the sliding groove 102, the child lock groove 103, the mounting cavity 104, the valve seat 11, the valve body 12, the bottom cover 13, the micro switch 14, the limiting structure 15, the valve core 20, the valve rod 30, the annular groove 301, the first flat position 302, the second flat position 303, the embedded block 31, the limiting retainer ring 32, the flange 34, the first spring 35, the second spring 36, the positioning element 37, the collar 371, the positioning bump 372, the positioning block 40, the embedded hole 401, the main body portion 41, the positioning boss 42, the valve needle 50, the shift lever 61, the pressing arm 62, the guide groove 603, the shifting arm 63, the elastic element 64, the fixing portion 641, the positioning head 6411, the positioning lever 12, the compression portion 642, the protruding point 6421, the positioning groove 601, the valve 70, and the push rod 71.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the utility model and are not to be construed as limiting the utility model.

Referring to fig. 1 to 4 and 10 to 13, a gas valve 100 according to an embodiment of an aspect of the present invention includes: housing 10, stem 61 and valve stem 30.

Wherein, the shell 10 has a gas channel therein, and the shell 10 is provided with a valve 70 and a valve core 20, the valve 70 is used for opening and closing the gas channel, and the valve core 20 is used for adjusting the gas channel opening degree. The deflector rod 61 is rotatably connected with the housing 10, and a deflector arm 63 which is constructed in a cantilever shape is connected on the deflector rod 61, and an elastic piece 64 is arranged on the deflector arm; the valve stem 30 is rotatably and movably connected to the housing 10 in the circumferential direction, and the valve stem 30 is configured to drive the valve plug 20 to rotate to adjust the opening degree and to drive the shift lever 61 to rotate to drive the elastic member 64 to open the valve 70.

In the using process, the valve rod 30 can rotate along the circumferential direction and also can move along the axial direction, the valve rod 30 can drive the shifting rod 61 to rotate in the moving process, the shifting rod 61 can drive the shifting arm 63 to open the valve 70 when rotating, and because the elastic piece 64 is arranged on the shifting arm 63, the elastic piece 64 has the elastic deformation capacity, therefore, in the rotating process of the shifting rod 61, the shifting arm 63 can flexibly drive the valve 70, so that the valve 70 is opened, the impact on the valve 70 can be reduced, meanwhile, when the stroke of the valve rod 30 is large, the elastic piece 64 with the elastic deformation capacity can buffer redundant strokes, and further the impact on the valve 70 is reduced.

According to the gas valve 100 of the embodiment of the utility model, the elastic member 64 is arranged on the toggle arm 63, so that the impact on the valve 70 can be reduced, the valve 70 is prevented from being damaged by the large impact, the working stability of the valve 70 is effectively improved, and the service life of the valve 70 is prolonged.

The elastic member 64 of the present invention may be an elastic structure such as a rubber member or a silicone member.

The toggle arm 63 and the toggle arm 61 can be fixedly connected together in an integrated forming, welding connection, bolt connection and other modes, the elastic piece 64 can also be integrated with the toggle arm 63 in an integrated forming, welding or other connection modes, in addition, the utility model provides some modes for realizing the connection of the toggle arm 63 and the elastic piece 64, the stability of the connection of the toggle arm 63 and the elastic piece 64 is improved, and the assembly efficiency of the toggle arm 63 and the elastic piece 64 is improved.

Referring to fig. 12 and 13, in some embodiments of the present invention, the elastic member 64 includes a fixing portion 641 and a compressing portion 642, the fixing portion 641 is fixedly connected to the toggle arm 63, and the compressing portion 642 is connected to the fixing portion 641 and is adapted to be elastically deformed. The fixing portion 641 may be welded, bolted, integrally formed with the toggle arm 63, and the like. The compression portion 642 can be connected to the fixing portion 641 by adhesion, welding, hook and loop fastener. Thereby achieving a stable connection between the compression part 642 and the toggle arm 63 so that the toggle 61 can stably open the valve 70.

Alternatively, as shown in fig. 13, the fixing portion 641 includes a positioning head 6411 and a positioning rod 6412, the positioning head 6411 is spaced apart from the toggle arm 63, and the positioning rod 6412 is connected between the positioning head 6411 and the toggle arm 63 to form a positioning groove 601 at the outer periphery of the positioning rod 6412, the compressing portion 642 is sleeved outside the positioning head 641 and is embedded in the positioning groove 601, and a gap is formed between the compressing portion 642 and an end surface of the positioning head 6411. Accordingly, stable connection between the compressing portion 642 and the fixing portion 641 may be achieved, and a certain elastic deformation margin of the compressing portion 642 may be facilitated to reduce impact on the valve.

Alternatively, as shown in fig. 13, the side wall of the compression part 642 opposite to the end surface of the positioning head 6411 is provided with a projection 6421, and the projection 6421 protrudes from the side wall and is adapted to abut against and open the valve. By providing the raised points, deformation of the compression portion 642 may be further facilitated to improve its ability to absorb the valve stem stroke, reducing impact on the valve.

Alternatively, the fixing portion 641 is disposed on one side surface of the dial arm, and the fixing portion 641 extends in a direction perpendicular to the dial arm 63 and the dial 61.

In the present invention, if not specifically stated, the axial direction refers to the direction along the axis of the valve rod 30, and the circumferential direction refers to the direction around the axis of the valve rod 30, and for the case where there is a specific description, the specific description shall be made.

Optionally, referring to fig. 10 and 11, a lower pressing arm 62 is further connected to the shift lever 61, the lower pressing arm 62 is configured as a cantilever connected to the shift lever 61, and the valve stem 30 is adapted to press the lower pressing arm 62 to drive the shift lever 61 to rotate. Specifically, the shift lever 61 may be disposed perpendicular to an axis of the valve stem 30, and the valve stem 30 will push the lower pressing arm 62 during the axial movement, so that the lower pressing arm 62 is in a cantilever shape, and therefore the valve stem 30 can be conveniently driven to rotate, power is transmitted to the shift arm 63, and then the shift arm is driven to the elastic member 64, so as to drive the valve 70, and thus the stability of the gas valve 100 is effectively improved.

Optionally, the push-down arm 62 is perpendicular to the shift lever 61, and the push-down arm 62 has a guide groove 603 extending in a direction perpendicular to the shift lever 61. Wherein, in the rotatory in-process of driving lever 61, the position that is relative with valve rod 30 on pushing down arm 62 can change, for the convenience valve rod 30 drives pushing down arm 62 and driving lever 61 steadily, sets up guide slot 603 on pushing down arm 62, can be convenient for valve rod 30 to the drive of driving lever 61, improves the stability of drive structure.

Alternatively, the distance of the position of hold-down arm 62 relative to stem 61, corresponding to valve stem 30, is less than the distance of elastic member 64 relative to stem 61. Wherein the push-down arm 62 and the toggle arm 63 are configured as a lever structure, and the driving stroke of the output end of the toggle rod 61 to the valve 70 is greater than the rotation stroke of the push-down arm 62, so that the valve 70 can be stably opened with a small stroke of the valve rod 30.

Referring to fig. 4, in some embodiments of the present invention, the housing 10 includes a mounting cavity 104, the valve 70 is fixedly mounted in the mounting cavity 104, and the mounting cavity 104 is provided with through holes, which are respectively opposite to the valve 70 and the elastic member 64. The elastic member 64 can stably pass through the through hole to trigger the valve 70. The valve 70 is prevented in future by arranging and installing the casing 10, so that the stability of the valve 70 can be improved, and the valve is conveniently triggered by the toggle arm 63.

As shown in fig. 2 and 3, in some embodiments of the present invention, the gas valve 100 further includes a needle 50, one end of the needle 50 abuts an end of the stem 30, and the other end of the needle 50 abuts the shift lever 61 through the cartridge 20, the needle 50 extends in the axial direction, and the needle 50 is adapted to transmit the movement of the stem 30 in the axial direction to the shift lever 61 to drive the shift lever 61 to rotate. That is, the power of the valve stem 30 is transmitted to the valve 70 through the valve stem 30, thereby facilitating the driving of the valve 70, making it possible to extend the distance between the valve 70 and the valve stem 30, avoiding interference between parts, and reducing the cost involved and the manufacturing cost.

In addition, with reference to fig. 2, 3 and 9, the gas valve 100 of the present invention further includes a positioning block 40, the positioning block 40 is disposed in the housing 10, and the positioning block 40 has a locking position and an unlocking position along the axial direction, the positioning block 40 is locked at the locking position and can rotate at the unlocking position and is adapted to drive the valve element 20, and the positioning block 40 is fixed at a position circumferentially opposite to the valve rod 30 and is adapted to be driven by the valve rod 30. The positioning block 40 of the present invention may be integrally formed with the valve stem 30 or may be a separate structure, and for example, the positioning block 40 and the valve stem 30 may be fixedly connected to each other, specifically, in combination with the above embodiment, the positioning block 40 and the valve stem 30 are fixed in relative positions in the circumferential direction, and when the positioning block 40 and the valve stem 30 are fixedly connected, the positioning block 40 and the valve stem 30 are fixed in relative positions in the axial direction. In addition, the positioning block 40 and the valve rod 30 may be provided in other forms, and the present invention will be described in detail.

Since the trigger stroke of the valve 70 is different from the stroke of unlocking the child lock, the valve 70 is not actually sucked after the ignition is finished, so that the ignition is performed when the valve rod 30 is pressed, and the flameout is caused when the valve rod 30 is released, which affects the use of a user. In the related art, the valve 70 structure only lengthens the child lock stroke on the original integrated valve stem 30. Firstly, the volume of the valve body 12 is increased, secondly, when the valve body is opened after unlocking the child lock, the valve rod 30 moves downwards for the travel distance of the child lock, the toggle arm 63 on the toggle rod 61 abuts against the push rod 71 of the valve 70, and the push rod 71 is in a stressed state, at this time, if the switch-off occurs accidentally, the push rod 71 of the valve 70 cannot be reset normally, the head rubber gasket cannot seal effectively, and air leakage is caused.

1-4, in some embodiments of the utility model, the locating block 40 is axially movable relative to the valve stem 30. Because the positioning block 40 is separated from the valve rod 30, the stroke of the positioning block 40 can be different from that of the valve rod 30, so that the small stroke of the positioning block 40 for releasing the child lock and the large stroke of the valve 70 for opening can be simultaneously met, different stroke requirements in the use process are met, and the use of the gas valve 100 is facilitated. By separating the driving structure of the valve 70 from the driving structure of the valve core 20, different requirements of unlocking a child lock, rotating the valve core 20 and opening the valve 70 can be met, the problem of flameout after the valve rod 30 is loosened is avoided, and the valve is convenient to use.

In order to further avoid the problem of releasing the flame-out, in the process of pressing the valve rod 30, triggering the valve 70 first may be implemented, and then the child lock is opened, so as to avoid the problem of releasing the flame-out after releasing the valve rod 30, of course, based on different actual use situations, other time sequences may be adopted for opening the valve 70 and opening the child lock, and the present invention is mainly explained by opening the valve 70 first and then opening the child lock, which is not a limitation to the scope of the present invention.

In some embodiments of the present invention, the valve rod 30 has an initial position, a triggering position and a rotating position along the axial direction, the valve rod 30 triggers the valve 70 at the triggering position and drives the positioning block 40 to move to the unlocking position at the rotating position, and the stroke C of the valve rod 30 moving from the initial position to the triggering position is not greater than the stroke B of the valve rod 30 moving to the rotating position. That is, during depression of the valve stem 30, the valve 70 will be opened and the child lock subsequently unlocked, or both the valve 70 and the child lock may be opened simultaneously. Of course, it is preferable to open the valve 70 before releasing the child lock.

Specifically, during the use process, the valve rod 30 is pressed down, and during the pressing down process of the valve rod 30, the valve 70 is triggered, at this time, the valve 70 is opened, the ignition is completed, and then the child lock is unlocked (i.e. the positioning block 40 is moved to the unlocking position), so that the valve core 20 can be rotated to adjust the opening degree by rotating the valve rod 30 and transmitting power to the valve core 20 through the positioning block 40. Thereby avoiding the problem of blow-out after releasing the valve stem 30.

In addition, the total pressing stroke of the valve rod 30 is set to be A, the stroke for unlocking the child lock is set to be B (the positioning block 40 is driven to the unlocking position from the beginning of pressing the valve rod 30 to the valve rod 30), the suction stroke of the valve 70 is set to be C, and A is larger than or equal to B and larger than C, so that the suction valve is ensured after the child lock is unlocked.

As shown in fig. 3, optionally, the valve rod 30 has a pressing structure for driving the positioning block 40, a gap E is formed between the pressing structure and the positioning block 40 when the valve rod 30 is in the initial position, a stroke B of the valve rod 30 is equal to a sum of the gap E and an unlocking stroke D of the positioning block 40, and the unlocking stroke D of the positioning block 40 is a stroke of the positioning block 40 moving from the locking position to the unlocking position. Therefore, the valve 70 can be opened before the child lock is unlocked without changing the existing child lock structure, and the phenomenon that the unlocking stroke D is too large to influence the use can be avoided.

Referring to fig. 2 and 7, in some embodiments of the present invention, the gas valve 100 further includes an ignition switch connected to the housing 10, and the valve stem 30 is configured and adapted to activate the ignition switch during stroke B. That is, in the process of pressing the valve rod 30, before unlocking the child lock, the ignition is finished, so that stable ignition is realized, and the problem that flameout is caused by loosening the valve rod 30 before the ignition is finished is avoided.

Of course, other external ignition devices may be used to effect ignition in the present invention.

Optionally, an annular groove 301 is provided on the circumferential surface of the valve rod 30, and the trigger of the ignition switch extends into the annular groove 301 and is adapted to be triggered by the end surface of the annular groove 301. Thereby improving the efficiency and success rate of ignition and improving the stability of the operation of the gas valve 100.

Of course, the annular groove 301 of the valve rod 30 in the present invention may be a complete annular structure, and may also be a major arc or minor arc ring.

Referring to fig. 2 and 6, in some embodiments of the present invention, the housing 10 includes a valve seat 11, a mounting hole 101 is formed in the valve seat 11, a sliding groove 102 is formed on an inner peripheral surface of one end of the mounting hole 101, and a child lock groove 103 is formed on a bottom surface of the sliding groove 102, wherein the valve rod 30 is inserted into the mounting hole 101, the positioning block 40 includes a main body portion 41 and a positioning boss 42 connected to the main body portion 41, the positioning boss 42 is inserted into the child lock groove 103 when the positioning block 40 is in the locking position, and the positioning boss 42 is adapted to slide along the sliding groove 102 when the positioning block 40 is in the unlocking position. In the use process, through the cooperation of valve rod 30 and mounting hole 101, can realize the circumferential direction rotation and the axial displacement of valve rod 30, the convenient drive to valve rod 30.

Of course, in the present invention, the positioning block 40 may be provided with an abdicating groove, the valve seat 11 may be provided with a protrusion, in the locking position, the circumferential rotation of the positioning block 40 is limited by the cooperation of the abdicating groove and the protrusion, and in the unlocking position, the rotation of the positioning block 40 is facilitated by releasing the limitation of the abdicating groove by the protrusion. Switching of the positioning block 40 between the locking position and the unlocking position is likewise possible. Of course, the above description of the present invention is only for the specific embodiments of the present invention, and is not intended to limit the scope of the present invention.

Alternatively, the mounting hole 101 includes a first hole segment, a second hole segment and a third hole segment with gradually increasing radial sizes, a first step surface is provided between the first hole segment and the second hole segment, a second step surface is provided between the second hole segment and the third hole segment, wherein one end of the valve rod 30 is provided with a flange 34 and limited by the first step surface, and the positioning block 40 is axially movably provided at the third hole segment and limited by the second step surface. Through the cooperation of the first step surface and the flange 34, the valve rod 30 can be limited, and the valve rod 30 is prevented from falling out of the mounting hole 101, and in addition, in combination with the foregoing embodiment, when the flange 34 abuts against the first step surface, the valve rod 30 is at the initial position. In addition, through the cooperation of the second step surface and the positioning block 40, the position stability of the positioning block 40 can be realized, so that the valve rod 30 can conveniently drive the positioning block 40, and the stability of the gas valve 100 is improved.

In some embodiments of the utility model, as shown in fig. 2, the end of the valve stem 30 extends out of the mounting bore 101 and is provided with a limit stop 32, the limit stop 32 being used to limit the axial travel of the valve stem 30. The limit retainer ring 32 can be a split retainer ring or other structures, and by arranging the limit retainer ring 32, the maximum stroke of the valve rod 30 can be controlled, and the influence of the transition axial movement of the valve rod 30 on the stability of the gas valve 100 (such as the impact on the valve 70) can be avoided. In addition, with the above embodiment, the stroke control of the downward pressing and upward lifting of the valve rod 30 can be realized by the cooperation of the flange 34 and the limit retainer 32, and the stability of the axial movement of the valve rod 30 is improved.

In addition, the positioning block 40 may be positioned by a limit stop 32.

Referring to fig. 7 and 9, in some embodiments of the present invention, an insertion block 31 is provided on one of the end surface of the stem 30 and the positioning block 40 and an insertion hole 401 is provided on the other, for example, the insertion block 31 may be provided on the end surface of the stem 30 and the insertion hole 401 may be provided on the positioning block 40; the insertion hole 401 may be provided in the end surface of the stem 30, and the insertion block 31 may be provided in the positioning block 40. The insert block 31 is movably inserted into the insert hole 401 in an axial direction so that the valve stem 30 rotates the positioning block 40. By the engagement of the insertion block 31 and the insertion hole 401, it is possible to achieve the engagement of the positioning block 40 with the stem 30 movably in the axial direction and the relative position fixation of the stem 30 and the positioning block 40 in the circumferential direction. The relative position is fixed in the present invention to realize the synchronous rotation of the positioning block 40 and the valve rod 30, and in the actual use process, the positioning block 40 and the valve rod 30 may have a certain circumferential relative movement due to the reasons of assembly precision, etc.

In combination with the foregoing embodiment, the end surface of the valve rod 30 is the foregoing abutting structure.

In some embodiments of the present invention, as shown in fig. 2 and 3, the gas valve 100 further comprises a valve needle 50, the valve needle 50 extending in an axial direction and having one end adapted to abut the valve stem 30, the valve needle 50 being configured for triggering the valve 70. That is, the power of the valve stem 30 is transmitted to the valve 70 through the valve stem 30, thereby facilitating the driving of the valve 70, making it possible to extend the distance between the valve 70 and the valve stem 30, avoiding interference between parts, and reducing the cost involved and the manufacturing cost.

The valve needle 50 and the valve rod 30 in the present invention may be an integral structure or a split structure, and the valve rod 30 and the valve needle 50 may be a fixed structure or a relatively separable structure.

Optionally, the valve needle 50 axially extends through the valve element 20 and the positioning block 40. After the valve rod 30 drives the valve needle 50 to trigger the valve 70, ignition is completed, the valve 70 can be kept in a connected state, and the valve needle 50 can be released by releasing the valve rod 30, so that the stability and the service life of the gas valve 100 are improved.

In addition, based on the structure of the valve 70, the valve 70 generally has a certain resetting capability, when the valve rod 30 is loosened and the valve is turned off, the resetting capability of the valve 70 is transmitted to the valve rod 30, so that the valve rod 30 is reset, and after the valve 70 is closed, even if the opening degree of the valve core 20 is maximum, gas does not leak, so that the resetting structure for the valve rod 30 and the positioning block 40 does not need to be arranged. Certainly, in order to improve the safety, stability, operation feel and the like, the utility model is also provided with a reset structure, and the reset of the valve rod 30 and the positioning block 40 is realized through the reset structure.

Referring to fig. 2 and 3, in some embodiments of the present invention, the gas valve 100 further includes a reset structure configured to reset the valve stem 30 to the initial position and the positioning block 40 to the lock position. Through the reset structure, the valve rod 30 and the positioning block 40 can be reset quickly, so that the valve rod is convenient to use.

The reset member may be connected to the valve rod 30, so that the valve rod 30 is reset after the valve rod 30 is pressed down to complete the ignition, the positioning block 40 is located at the unlocking position, the valve 70 is opened, and the stable operation of the gas valve 100 is ensured. That is, after the valve stem 30 drives the positioning block 40 to the unlocking position, the positioning block 40 may be maintained at the unlocking position within a certain rotational angle range. And the reset member may reset the valve stem 30, resulting in the valve stem 30 being separated from the positioning block 40. In addition, the reset structure can also reset the positioning block 40, so that the positioning block 40 can be reset to the locking position when in the preset position.

Optionally, the return structure includes a first spring 35 and a second spring 36, two ends of the first spring 35 respectively abut against the valve core 20 and the positioning block 40; the two ends of the second spring 36 abut against the valve core 20 and the valve rod 30 respectively, wherein the first spring 35 and the second spring 36 are in an inner-outer nested structure. Of course, the first spring 35 and the second spring 36 may also abut against the housing 10 or other locations.

The present invention provides a gas valve 100 that can be easily extinguished by hand in the related art. With reference to the foregoing embodiment, the gas valve 100 of the present invention includes a valve rod 30, a valve seat 11, a microswitch 14, a valve body 12, a positioning block 40, a valve core 20, a valve needle 50, a first spring 35, a second spring 36, a shift lever 61, a bottom cover 13, a valve 70, and other components, wherein an embedded block 31 is disposed at the bottom of the valve rod 30, the embedded block 31 is embedded in the positioning block 40, a sliding slot 102 is disposed inside the valve seat 11, a child lock slot 103 is disposed at the bottom of the sliding slot 102, the height is D, a positioning boss 42 is disposed outside the positioning block 40, the positioning boss 42 and the child lock slot 103 inside the valve seat 11 form a child lock structure, a gap E is provided between the end surface of the valve rod 30 and the end surface of the positioning block 40, and the child lock release assembly forms B + E > C. A second spring 36 is arranged below the positioning block 40 to reset the positioning block 40, the bottom of the valve rod 30 is abutted against the valve needle 50, and a first spring 35 is arranged below the valve needle 50 to reset the valve rod 30; the needle 50 abuts against a lever 61 downward, the lever 61 is provided with a push-down arm 62 and a lever arm 63, and the lever arm 63 is provided with an elastic member 64. When the valve rod 30 is depressed, the valve needle 50 moves downward to abut against the depressing arm 62 of the lever 61, and then the elastic member 64 pushes open the valve 70, so that the valve 70 is engaged. Before the positioning block 40 is separated from the child lock, the movable iron core and the static iron core of the valve 70 are ensured to be attracted, the valve rod 30 is continuously pressed, and the redundant total stroke is absorbed by the elastic part 64, so that the valve 70 is prevented from being damaged by jacking.

According to the utility model, the valve rod 30 is provided with the positioning groove, the split washer is arranged in the positioning groove, the positioning piece 37 is arranged below the split washer, and the clearance between the positioning piece 37 and the outer end of the mounting opening in the initial state is the total pressing stroke of the valve rod 30, so that the position is limited, and the valve 70 can be effectively prevented from being damaged by collision.

The middle part of the valve rod 30 is provided with an annular groove 301, the side surface of the annular groove 301 is provided with a microswitch 14, the microswitch 14 is arranged on the valve seat 11, when the valve rod 30 is pressed down, the upper end surface of the annular groove 301 acts on a contact point at the head part of the microswitch 14, the microswitch 14 acts, and an open-circuit ignition signal is output (pulse ignition is carried out before a gas channel is opened to avoid gas leakage); the bottom of the valve rod 30 is provided with a countersunk hole, the valve needle 50 is connected in the countersunk hole, and the valve needle 50 is pushed to move downwards when the valve rod 30 is pressed downwards; the bottom of the valve needle 50 is connected with a deflector rod 61, the deflector rod 61 is fixed on the bottom cover 13, the deflector rod 61 is provided with a pressing arm 62 and a deflector arm 63, when the valve needle 50 moves downwards, the pressing arm 62 moves downwards, the other end elastic part 64 pushes the valve 70 open, a movable iron core and a static iron core are arranged in the valve 70, when the movable iron core and the static iron core are attached, when a main coil in the valve 70 has valve suction current, the valve 70 finishes the suction work, and a gas passage is opened.

In addition, in the use of the gas valve 100, the use habit of the user is that the valve body 12 is pressed downwards to ignite and then rotates to the maximum fire angle (generally 90 °) to be provided with the maximum fire limit, in the related art, the limit block of the valve rod 30 needs to be pressed downwards to rotate to the limit boss of the valve body 1290 ° after being separated from the child lock, so as to form the 90 ° maximum fire limit, the shift lever 61 includes two press arms 62 and shift arms with different lengths, wherein the press arms 62 are abutted to the valve needle 50, the shift arms are abutted to the valve 70, and the lever ratio of the two is generally 1: 2.5, then press 1mm down when valve rod 30, the driving lever 61 dials the arm and pushes away valve 70 distance forward and is about 2.5mm, in order to guarantee that valve 70 inhales the valve before unlocking the child and locking, valve 70 inhales the valve stroke and has left the interference allowance before unlocking the child and locking, it is spacing to continuously push down to 90 again, then valve 70 end motion stroke can last to increase, current valve body 12 structure space is narrow and small, do not have unnecessary space, if continue to use current 90 big fire limit structure 15, then valve 70 chamber length need lengthen, the volume increase, the commonality is poor, it is longer to press down the distance when enlarging user's use behind the stroke in addition, be not convenient for use. In order to solve the problem, the utility model provides a gas valve 100, which needs to optimize the 90-degree fire limit, and has the principle that the gas valve does not need to be pressed down to the original 90-degree limit after unlocking the child lock, and is synchronous with the child lock unlocking, so that the gas valve can be directly rotated to 90-degree to form the fire limit after unlocking the child lock.

To this end, the utility model further provides a gas valve 100, which comprises a housing 10, a valve core 20, a valve rod 30 and a positioning block 40. Wherein, the shell 10 is provided with a mounting hole 101, and a limiting structure 15 is arranged around the outer end of the mounting hole 101. The valve core 20 is rotatably provided in the housing 10 to adjust the opening degree. The valve rod 30 is rotatably and movably connected with the housing 10 along the circumferential direction, the handle part of the valve rod 30 extends out of the housing 10 from the outer end of the mounting hole 101 and is provided with a positioning piece 37, and the positioning piece 37 is suitable for being limited by the limiting structure 15 to limit the rotation angle of the valve rod 30. According to the gas valve 100 of the embodiment of the utility model, the limiting structure 15 is arranged on the outer side of the housing 10, the positioning piece 37 is arranged on the valve rod 30, and the positioning piece 37 is matched with the limiting structure 15 to limit the rotation of the valve rod 30, so that the structure of the gas valve 100 can be simplified, the axial stroke of the valve rod 30 can be shortened, the space utilization rate can be improved, and the size of the valve 70 can be reduced.

In addition, in the present invention, the outer ring air hole and the inner ring air hole can be arranged on the outer shell 10, the outer ring air passage and the inner ring air passage are arranged on the valve core 20, and the overlapping area of the air holes on the valve body 12 and the valve core 20 is adjusted by rotating the valve core 20, so as to realize the adjustment of the gas flow, and further control the fire of the stove. In addition, whether or not gas is supplied can be controlled by the valve 70, wherein the valve 70 is controlled by the valve rod 30, and the opening degree of the gas valve 100, the valve core 20 and the like are controlled by the positioning block 40, and the utility model has a flameout protection function, and the principle thereof is as follows: the thermoelectric power generated by different alloy materials under the action of temperature is different, and the thermoelectric power is manufactured by utilizing the potential difference of different alloy materials. The thermocouple is also a heat sensor which changes the heat signal into thermal electromotive force, and the thermocouple used as the heat sensor on the gas stove is also designed according to the principle characteristic of the thermocouple. The principle of this safety protection device is that when the thermocouple is heated by flame, a thermoelectric force is generated, which generates current when passing through a circuit of the valve 70 connected thereto, and the generated current excites the magnet of the valve 70 to generate magnetism, thereby completing the valve opening operation of the valve 70. The safety protection device is simple to realize on a gas stove, a valve 70 is fixed in a plug valve of the gas stove to control a gas passage, a thermocouple is fixed near a burner of the gas stove, a lead wire of the thermocouple is connected with a winding of the valve 70, the plug valve is pressed and rotated when the safety protection device needs to work, an ejector rod valve needle 50 in the plug valve pushes the valve 70 open through a deflector rod 61 when the plug valve is pressed, the gas is ignited by ignition sparks when being released to the burner, but the plug valve is required to be pressed to keep the open state of the valve 70 after the gas is ignited due to the inertia effect of the thermocouple, the plug valve can be released when the thermoelectromotive force generated by the heated thermocouple is enough to maintain the suction state of the valve 70, the normal work of the gas stove is kept, and the pressing time is about S-S (single coil valve 70). When the gas stove is accidentally extinguished in normal operation, the thermocouple is slowly cooled due to flameless heating, the thermoelectric force slowly falls until the thermoelectric force disappears, and the valve 70 loses magnetism due to no exciting current and is reset under the action of the spring force, so that a gas passage is closed, and gas is prevented from leaking to achieve the effect of safety protection.

The double-coil valve 70 is additionally provided with a group of secondary coils on the original single-coil valve 70, and when the valve rod 30 is pressed down, the battery supplies power to the secondary coils to the valve 70 to suck the valve, so that the effect of zero-second starting is achieved. Above, because the valve 70 contains the movable and static iron cores inside, the movable and static iron cores must be completely attached to satisfy the current of the suction valve, and then the suction valve can be sucked to open the gas passage.

In the utility model, the inner peripheral surface of the outer end of the mounting hole 101 may be provided with a limiting groove, a limiting block and other structures, and the limiting groove, the limiting block and other structures are matched with the positioning piece 37 to limit the rotation angle of the valve rod 30. In addition, the utility model also provides other limiting structures 15.

Referring to fig. 2-5, in some embodiments of the utility model, the stop structure 15 is configured as an annular rib extending around the mounting hole 101 and having an opening, wherein at least a portion of the positioning member 37 is located within the opening and circumferentially opposite the stop structure 15 when the positioning block 40 is actuated by the valve stem 30 to the unlocked position. Therefore, the valve rod 30 can be limited on the premise of avoiding influencing the structural strength of the shell 10, and the limiting structure 15 can also improve the structural strength of the shell 10.

Alternatively, the inner circumferential surface of the stopper structure 15 is spaced apart from the inner circumferential surface of the mounting hole 101 to configure a stepped structure. Through the stair structure who constructs, can realize the location to limit structure 15 to the restriction of stroke is pressed to the realization to valve rod 30, avoids valve rod 30's stroke too big and influence the stability and the life of gas valve 100.

The positioning member 37 and the valve rod 30 of the present invention may be formed as an integral structure or may be formed as a separate structure. In some embodiments of the present invention, with reference to fig. 7 and 8, the outer circumferential surface of the handle portion of the valve rod 30 has a first flat position 302, the positioning member 37 includes a collar 371 and a positioning protrusion 372 connected to the collar 371, the inner circumferential surface of the collar 371 has a second flat position 303, the collar 371 is sleeved on the handle portion, and the first flat position 302 and the second flat position 303 cooperate to fix the positioning member 37 and the valve rod 30 at a relative position in the circumferential direction. Specifically, the valve rod 30 may be configured to be cylindrical, wherein a notch is formed on the outer peripheral surface of the valve rod 30 to form a first flat position 302, a circular hole matched with the shape and size of the valve rod 30 is formed on the inner side of the collar 371, and a protrusion is formed on the inner side surface of the collar 371 to form a second flat position 303, and the first flat position 302 and the second flat position 303 may be configured to be similar to a key position fit structure between the collar 371 and the valve rod 30, so as to achieve circumferential positioning of the positioning member 37 and the valve rod 30, and achieve synchronous rotation of the valve rod 30 and the positioning member 37. The positioning protrusion 372 on the positioning element 37 can limit the positioning element 37, so as to limit the rotation angle of the valve rod 30.

Optionally, the collar 371 is adapted to fit inside the spacing structure 15 and axially opposite the step structure. Specifically, when the valve rod 30 drives the positioning block 40 to move to the unlocking position, the collar 371 is embedded into the limiting structure 15, so that the limit of the stroke of the valve rod 30 is realized through a step structure, and the stability of the rotation of the valve rod 30 can be effectively improved due to the rotation of the collar 371 on the inner side of the limiting structure 15.

Optionally, the handle portion of the valve stem 30 is provided with a limit stop 32, and the collar 371 is sleeved between the limit stop 32 and the housing 10. Can realize spacing to setting element 37 through spacing retaining ring 32, avoid lantern ring 371 to deviate from, wherein, can set up positioning groove on the outer peripheral face of valve rod 30 to realize spacing to setting element 37 through embedding at present with positioning groove, wherein spacing retaining ring 32 can be split ring.

The first flat position 302 structure on the valve rod 30 can extend from the end part of the handle part of the valve rod 30 to a preset position, the first flat position 302 structure is provided with a limiting step surface, the limiting step surface is positioned on one side, far away from the end part of the valve rod 30, of the limiting retainer ring 32, and the positioning piece 37 is installed and positioned through the matching of the limiting step surface and the limiting retainer ring 32.

Optionally, the mounting hole 101 has a mounting opening in a peripheral wall thereof, and at least one open end of the limiting structure 15 is circumferentially spaced from the mounting opening. Wherein, the mounting opening can be used for mounting the micro switch 14 so as to conveniently trigger the micro switch 14 through the valve rod 30 to realize ignition.

Wherein, a part of the housing 10 can be configured as a sleeve, the inner side of the sleeve is configured as a mounting hole 101, the outer end face of the sleeve is provided with the limiting structure 15, the limiting structure 15 is configured as an annular rib shape arranged on the outer end face of the sleeve, the peripheral wall of the sleeve is provided with the mounting hole, a step structure is arranged between the inner peripheral face of the limiting structure 15 and the inner peripheral face of the mounting hole 101, and the opening of the limiting structure 15 is opposite to the mounting opening along the axial direction, one of two opening ends of the limiting structure 15 can be flush with the side surface of the mounting opening, and the other opening end can be separated from the mounting opening, so that, a clearance area may be configured between the stop structure 15 and the mounting opening to facilitate providing support to the locating tabs 372 on the collar 371, which, in particular, the collar 371 may rest on the step formation and the locating lug 372 may rest on the clearance area when the valve stem 30 is depressed to the maximum travel position.

In the gas valve 100 of the utility model, the limit sunken platform (formed by the limit structure 15 and the step structure) is arranged on the inner side of the top end of the conventional valve seat 11, and the 90-degree limit boss is arranged on the outer side of the top end; a flat position is arranged on the valve rod 30, a positioning piece 37 is arranged on the flat position (the positioning piece 37 can be configured into a plate shape), and the positioning piece 37 can rotate synchronously with the valve rod 30; a limiting boss is arranged on the outer side of the positioning piece 37, and when the valve rod 30 is pressed downwards and rotates to 90 degrees, the limiting boss can be matched with the limiting structure 15 to form 90-degree limiting; a positioning groove is arranged above the flat position of the valve rod 30, a split washer is arranged in the positioning groove to limit the positioning piece 37, and the positioning piece is prevented from moving upwards when the valve rod 30 is pressed downwards; when the valve rod 30 is pressed down, the lower end face of the positioning plate can be matched with the limit sink table of the valve seat 11 to form the total limit of the valve body 12, so that the valve 70 is prevented from being damaged by collision.

Fig. 1 to 4 are schematic views of a gas valve 100 according to an embodiment of the present invention, in which a housing 10 includes a valve body 12, a valve seat 11, and a bottom cover 13, in which the valve seat 11 covers an upper end of the valve body 12, the bottom cover 13 covers a lower end of the valve body 12, a mounting hole 101 is formed in the valve seat 11, a valve rod 30 is rotatably disposed in the mounting hole 101, the valve rod 30 is movable in an up-and-down direction and is limited by a limit stop 32 and a flange 34, an annular groove 301 is formed in the valve rod 30, a micro switch 14 is mounted on the valve seat 11 and is opposite to the annular groove 301, and the micro switch 14 is triggered during up-and-down movement of the valve rod 30. The lower end face of the valve rod 30 is provided with an embedded block 31, the embedded block 31 is non-circular, the embedded block 31 is embedded into the positioning block 40 to drive the embedded block 31 to rotate, a preset distance is arranged between the lower end face of the valve rod 30 and the positioning block 40, the lower end face of the valve rod 30 is abutted and drives the positioning block 40 to move downwards in the downward movement process, the lower end of the valve rod 30 is provided with a valve needle 50, the periphery of the valve needle 50 is provided with a first spring 35 and a second spring 36, the upper end of the valve needle 50 is provided with a matching structure, the upper end of the first spring 35 is abutted and matched with the matching structure, the upper end of the second spring 36 is abutted and positioned against the positioning block 40, the valve body 12 is internally provided with a rotatable valve core 20, and the lower ends of the first spring 35 and the second spring 36 are abutted to the valve core 20. The needle 50 extends in the vertical direction and has a lower end abutting against the shift lever 61.

Fig. 5 to 6 are schematic views of the valve seat 11 of the gas valve 100 according to an embodiment of the present invention. The inner peripheral surface of the lower end of the mounting hole 101 is provided with a sliding groove 102, the sliding groove 102 is opened downwards, and the bottom surface of the sliding groove 102 is provided with a child lock groove 103. The upper end face of the mounting hole 101 is provided with a limiting and limiting structure 15, a sinking platform structure is constructed between the limiting structure 15 and the upper end face, wherein the side wall of the mounting hole 101 is provided with a mounting opening, and the mounting opening cuts off the limiting structure 15 (or cuts off the sinking platform structure).

Fig. 7 is a schematic view of the valve stem 30 of the gas valve 100 of one embodiment of the present invention. The valve rod 30 extends along the up-down direction, the valve rod 30 is provided with an annular clamping groove and an annular groove 301 from top to bottom, the annular clamping groove is used for clamping the limiting retainer ring 32, the annular groove 301 is used for being matched with the microswitch 14, the lower end face of the valve rod 30 is used for abutting against the positioning block 40, and the lower end face of the valve rod 30 is connected with the embedded block 31. The lower end face of the insert 31 is provided with a recess adapted to receive the valve needle 50. The outer circumferential surface of the valve rod 30 is provided with a first flat position 302, and the first flat position 302 extends from the upper end of the valve rod 30 to below the annular clamping groove.

Fig. 8 is a schematic view of a positioning member 37 of a gas valve 100 according to an embodiment of the present invention, wherein the positioning member 37 includes a collar 371 and a positioning protrusion 372, the inner side of the collar 371 is provided with a second flat portion 303, and the positioning protrusion 372 is connected to the outer side of the collar 371, the collar 371 can be sleeved on a valve rod 30, the collar 371 is sleeved on the upper end of the valve rod 30 and sleeved on a ring-shaped slot, and then positioning is performed through a split washer.

Fig. 9 is a schematic view of the positioning block 40 of the gas valve 100 according to an embodiment of the present invention. The positioning block 40 includes a main body 41 and a positioning boss 42, the main body 41 is a hollow structure suitable for the needle 50 to pass through, and grooves are formed on left and right sidewalls of a lower end of the main body 41.

Fig. 10 and 11 are schematic views of a shift lever 61 of a gas valve 100 according to an embodiment of the present invention, the shift lever 61 having a push arm 62 and a shift arm 63, the push arm 62 and the shift arm 63 being located at opposite ends of the shift lever 61, respectively, the push arm 62 having a guide groove 603 for engaging with a needle 50, and the shift arm 63 being configured to be elastically cantilevered.

The utility model also provides a cooker which comprises the gas valve 100, so that the fire can be switched on and off and the size of the fire can be adjusted through the gas valve 100.

Wherein, the gas valve 100 can include first gas supply channel and second gas supply channel, can set up the fire lid on the cooking utensils, and the fire is covered and is equipped with the fire hole corresponding with first gas supply channel and second gas supply channel respectively.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims (12)

1. A gas valve, comprising:

the gas valve comprises a shell, a gas inlet and a gas outlet, wherein a gas channel is arranged in the shell, and a valve for opening and closing the gas channel and a valve core for adjusting the opening degree of the gas channel are arranged on the shell;

the deflector rod is rotatably connected with the shell, a deflector arm which is constructed into a cantilever shape is arranged on the deflector rod, and an elastic piece is arranged on the deflector arm;

the valve rod is connected with the shell in a rotatable and axially movable mode and is suitable for driving the valve core to rotate so as to adjust the opening degree, and the valve rod is suitable for driving the shifting rod to rotate so as to drive the elastic piece to open the valve.

2. A gas valve as claimed in claim 1, wherein the resilient member comprises a fixed portion fixedly connected to the dial arm and a compressed portion connected to the fixed portion and adapted to be resiliently deformed.

3. A gas valve as claimed in claim 2, wherein the fixing portion comprises a positioning head and a positioning rod, the positioning head is spaced apart from the dial arm, the positioning rod is connected between the positioning head and the dial arm to form a positioning groove at an outer periphery of the positioning rod, the compressing portion is fitted to an outer side of the positioning head and fitted into the positioning groove, and a gap is provided between the compressing portion and an end surface of the positioning head.

4. A gas valve as claimed in claim 3, wherein a projection is provided on a side wall of the compression portion facing the end face of the positioning head, the projection projecting from the side wall and being adapted to abut against and open the valve.

5. A gas valve as claimed in claim 3, wherein the fixing portion is provided on a side surface of the driver arm, and the fixing portion extends in a direction perpendicular to the driver arm and the driver lever.

6. A gas valve as claimed in claim 1, wherein a hold down arm is further connected to the stem, the hold down arm being configured as a cantilever connected to the stem, the stem being adapted to bear against the hold down arm to rotate the stem.

7. A gas valve according to claim 6,

the lower pressing arm is perpendicular to the shifting lever, and a guide groove extending in the direction perpendicular to the shifting lever is formed in the lower pressing arm; and/or

The distance between the position of the pressing arm corresponding to the valve rod and the shifting lever is smaller than the distance between the elastic piece and the shifting lever.

8. A gas valve as claimed in claim 1, 6 or 7, further comprising:

the valve comprises a valve needle, one end of the valve needle is abutted to the end of the valve rod, the other end of the valve needle penetrates through the valve core and is abutted to the shifting lever, the valve needle extends along the axial direction, and the valve needle is suitable for transmitting the axial movement of the valve rod to the shifting lever so as to drive the shifting lever to rotate.

9. A gas valve as claimed in claim 1, wherein the housing includes a mounting cavity, the valve being fixedly mounted in the mounting cavity, the mounting cavity having a through-hole therein, the through-hole being opposite the valve and the resilient member, respectively.

10. A gas valve as claimed in claim 1, further comprising:

the positioning block is arranged in the shell, the positioning block is provided with a locking position and an unlocking position along the axial direction, the positioning block is locked at the locking position and can rotate at the unlocking position and is suitable for driving the valve core, the positioning block and the valve rod can move relatively along the axial direction and are fixed along the circumferential relative position, and the positioning block is suitable for being driven by the valve rod.

11. A gas valve as claimed in claim 10, wherein the valve stem has an initial position, an actuated position and a rotated position along the axial direction, the valve stem actuating the gas valve in the actuated position and actuating the locating block to move to the unlocked position in the rotated position, the stroke C of the valve stem moving from the initial position to the actuated position being no greater than the stroke B of the valve stem moving to the rotated position.

12. Hob, characterized in, that it comprises a gas valve according to any one of claims 1 to 11.

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