CN114251479A

CN114251479A - Valve core for plug valve, plug valve with valve core and gas appliance with plug valve

Info

Publication number: CN114251479A
Application number: CN202210055928.4A
Authority: CN
Inventors: 张艺缤; 戚正胜; 管优林
Original assignee: Midea Group Co Ltd; Foshan Shunde Midea Washing Appliances Manufacturing Co Ltd
Current assignee: Midea Group Co Ltd; Foshan Shunde Midea Washing Appliances Manufacturing Co Ltd
Priority date: 2022-01-18
Filing date: 2022-01-18
Publication date: 2022-03-29

Abstract

The invention discloses a valve core for a plug valve, a plug valve with the valve core and a gas appliance, wherein the valve core is rotatably arranged in the plug valve, a gas inlet channel is formed in the valve core, a first gas outlet channel is formed on the peripheral wall of the valve core and comprises a first through hole and a first groove, the first through hole is used for communicating the gas inlet channel with the first groove, the first groove extends along the circumferential direction of the valve core and is provided with a first end part and a second end part in the circumferential direction, the first through hole is positioned between the first end part and the second end part, and the groove depth of the first end part and/or the second end part is/are gradually increased in the direction towards the first through hole. According to the valve core for the plug valve of the embodiment of the invention, the groove depth of the first end part and the second end part of the first groove is gradually increased in the direction towards the first through hole, and the first through hole is positioned between the first end part and the second end part, so that the gas passing amount of the plug valve can be controlled linearly.

Description

Valve core for plug valve, plug valve with valve core and gas appliance with plug valve

Technical Field

The invention relates to the field of domestic appliances, in particular to a valve core for a plug valve, and the plug valve and a gas appliance with the valve core.

Background

The gas valve is the core spare part of domestic gas cooking utensils, mainly plays functions such as sealed, regulation gas firepower and ignition, and the quality of gas valve has decided the quality of cooking utensils, and current case is when regulating and control the firepower size, still can't be according to actual demand smooth regulation effectively, can't satisfy user's culinary art demand.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art. To this end, it is an object of the present invention to provide a valve cartridge for a plug valve, which can better linearly control the gas throughput of the plug valve, thereby better satisfying the cooking requirements of the user.

The invention also provides a plug valve with the valve core.

The invention also provides a gas appliance with the plug valve.

According to the valve core for the plug valve of the embodiment of the first aspect of the invention, the valve core is rotatably installed in the plug valve, an air inlet channel is formed in the valve core, a first air outlet channel is formed on the outer peripheral wall of the valve core, the first air outlet channel comprises a first through hole and a first groove, the first through hole is used for communicating the air inlet channel and the first groove, the first groove extends along the circumferential direction of the valve core and is provided with a first end part and a second end part in the circumferential direction, the first through hole is located between the first end part and the second end part, and the groove depth of the first end part and/or the second end part is gradually increased in the direction towards the first through hole.

According to the valve core for the plug valve, the first groove surrounding the valve core in the horizontal direction is arranged, the height of the valve core can be reduced, the ultrathin design of the plug valve is facilitated, in addition, the groove depth of the first end part and the second end part of the first groove is gradually increased in the direction towards the first through hole, the first through hole is positioned between the first end part and the second end part, and the linear control of the gas passing amount of the plug valve can be facilitated.

In addition, the valve core for the plug valve provided by the invention also has the following additional technical characteristics:

in some embodiments of the present invention, a distance between the first end portion and the first through hole is greater than a distance between the second end portion and the first through hole, the first outlet channel further includes a first cut groove located between the first end portion and the first through hole, and a groove depth of the first cut groove gradually increases in a direction from the first end portion to the first through hole.

Optionally, the first undercut groove has a groove width less than a groove width of the first recess groove.

In some embodiments of the present invention, a second air outlet channel is further formed on the outer peripheral wall of the valve element, the second air outlet channel includes a second through hole and a second groove, the second through hole is used for communicating the air inlet channel and the second groove, and the second groove extends along the circumferential direction of the valve element and is spaced apart from the first groove in the axial direction of the valve element.

Optionally, in the circumferential direction, the second groove has a third end and a fourth end, the second through hole is located between the third end and the fourth end, and the groove depth of the third end and/or the fourth end gradually increases in a direction toward the second through hole.

Optionally, a distance between the third end and the second through hole is greater than a distance between the fourth end and the second through hole, the second outlet channel further includes a second cut groove located between the third end and the second through hole, and a groove depth of the second cut groove gradually increases in a direction from the third end to the second through hole.

Optionally, the second undercut groove has a groove width less than a groove width of the second recess groove.

Optionally, the second groove is communicated with the small fire injection pipe, the second gas outlet channel further comprises a micro fire hole, and the micro fire hole and the second groove are spaced apart in the circumferential direction.

The invention also provides a plug valve with the valve core of the embodiment.

A plug valve in accordance with an embodiment of a second aspect of the present invention includes a valve body and a valve core disposed in the valve body. Specifically, a valve core accommodating cavity is formed in the valve body, and the valve core is rotatably arranged in the valve core accommodating cavity.

According to the plug valve provided by the embodiment of the invention, the linear control can be better performed on the gas flow flux of the plug valve through the valve core provided by the embodiment, the flexibility is good, the control is accurate, and in addition, the valve core is low in height, so that the ultra-thin design of the plug valve can be facilitated.

The invention also provides a gas appliance with the plug valve of the embodiment.

According to the gas appliance provided by the third aspect of the invention, the plug valve of the embodiment can be arranged, so that the flow rate of the gas can be better and linearly controlled, the linear control on the firepower can be better realized, and meanwhile, due to the ultra-thin design of the plug valve, the assembly of the gas appliance can be optimized.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic diagram of a valve cartridge for a plug valve according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view of a first outlet passage of a valve cartridge for a plug valve according to an embodiment of the present invention.

FIG. 3 is a cross-sectional view of a second outlet passage for a valve cartridge of a plug valve according to an embodiment of the present invention.

FIG. 4 is a cross-sectional view of a valve core for a plug valve according to an embodiment of the present invention taken along an axial direction.

FIG. 5 is a perspective view of a plug valve according to an embodiment of the present invention.

FIG. 6 is an exploded view of a plug valve according to an embodiment of the present invention.

FIG. 7 is a top view of a plug valve according to an embodiment of the present invention.

Fig. 8 is a sectional view taken along line a-a of fig. 7.

Fig. 9 is a sectional view taken along line C-C of fig. 7.

Fig. 10 is a cross-sectional view taken along line D-D of fig. 7.

FIG. 11 is a front view of a plug valve according to an embodiment of the present invention.

FIG. 12 is a schematic structural view of the valve body of a plug valve according to an embodiment of the present invention.

FIG. 13 is a schematic disassembled structure view of the solenoid valve of the plug valve according to the embodiment of the invention.

Reference numerals:

a plug valve 100,

The valve body 1, the valve core accommodating pipe 11, the valve core accommodating cavity 111, the air inlet pipe 12, the air inlet 121, the outer ring pipe 13, the outer ring air outlet 131, the second air inlet hole 132, the inner ring pipe 14, the inner ring channel 140, the inner ring air outlet 141, the first air inlet hole 142, the inclined pipe 143, the electromagnetic valve accommodating pipe 15, the electromagnetic valve accommodating cavity 151, the first communicating pipe 16, the second communicating pipe 17, the third communicating pipe, the fourth,

A first extension axis X1, a second extension axis X2, a third extension axis X3, a fourth extension axis X4,

An electromagnetic valve 2,

The valve element 3, the first outlet passage 31, the first groove 311, the first cut groove 312, the first through hole 313, the first end 314, the second end 315, the second outlet passage 32, the second groove 321, the second through hole 323, the pilot hole 324, the third end 325, the fourth end 326, the inlet passage 33, the first through hole 313, the second through hole 315, the third through hole 32, the fourth through hole 326, the inlet passage 33, the third through hole 311, the fourth through hole 312, the third through hole 313, the fourth through hole 326, the third through hole 325, and the fourth through hole 326,

The valve rod 41, the convex block 411, the damping stop 42, the split retainer ring 43, the pressure plate 44, the valve seat 45, the valve needle 46, the valve core spring 47, the gasket 48, the O-shaped ring 49, the plug screw 50, the microswitch 51, the bottom plate sealing ring 52, the deflector rod 53, the first deflector lug 531, the second deflector lug 532, the bottom plate 54, the transmission block 55, the spring seat 45, the valve core spring 47, the gasket 48, the O-shaped ring 49, the plug screw 50, the microswitch 51, the bottom plate sealing ring 52, the deflector rod 53, the first deflector lug 531, the second deflector lug 532, the bottom plate 54, the transmission block 55, the spring seat, the valve seat spring seat, the valve core spring seat, the deflector rod spring seat, the valve core spring seat, the valve seat spring seat, the gasket 48, the valve seat spring seat, the valve seat spring seat, the valve seat spring seat, the valve seat,

a first fastening screw 61, a second fastening screw 62, a third fastening screw 63, a fourth fastening screw 64, and a fifth fastening screw 65.

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 accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

A valve cartridge 3 for a plug valve 100 according to an embodiment of the present invention will be described with reference to fig. 1 to 4.

According to the valve core 3 for the plug valve 100 of the embodiment of the invention, the valve core 3 is rotatably installed in the plug valve 100, and the plug valve 100 can adjust the flow rate of gas by rotating the valve core 3, so that the firepower of gas appliances such as a gas stove can be adjusted.

As for the valve core 3, specifically, as shown in fig. 1-4, an air inlet channel 33 is formed in the valve core 3, external gas or gas in a gas storage tank can enter the valve core 3 through the air inlet channel 33, a first air outlet channel 31 is formed on the outer peripheral wall of the valve core 3, the first air outlet channel 31 includes a first through hole 313 and a first groove 311, the first through hole 313 is used for communicating the air inlet channel 33 and the first groove 311, the first groove 311 extends along the circumferential direction of the valve core 3, in the specific example shown in fig. 1, the valve core 3 is a columnar structure, the first groove 311 surrounds the outer peripheral wall of the valve core 3 along the horizontal direction, that is, the circumferential direction here can refer to the horizontal direction in fig. 4, further, during the process that the first groove 311 extends along the circumferential direction of the valve core 3, the first groove 311 also can extend along the circumferential direction of the valve core 3 in a spiral manner, specifically, extend along the circumferential direction of the valve core 3 in a spiral downward manner, the valve core 3 may also extend along the circumferential direction of the valve core in a spiral upward manner, which is not limited herein and may be specifically set according to actual requirements.

In the example shown in fig. 1 of the present application, the first recess 311 surrounds the outer circumferential wall of the valve element 3 in the horizontal direction, so that the first recess 311 occupies a small space in the axial direction of the valve element 3, which is beneficial to reducing the height of the valve element 3, and is beneficial to the ultra-thin design of the plug valve 100.

Further, the first groove 311 has a first end 314 and a second end 315 in the circumferential direction, the first through hole 313 is located between the first end 314 and the second end 315, and the groove depth of the first end 314 and/or the second end 315 gradually increases in a direction toward the first through hole 313. In the first example, only the groove depth of the first end portion 314 gradually increases in a direction toward the first through hole 313, in the second example, only the groove depth of the second end portion 315 gradually increases in a direction toward the first through hole 313, and in the third example, the groove depth of the first end portion 314 gradually increases in a direction toward the first through hole 313, while the groove depth of the second end portion 315 gradually increases in a direction toward the first through hole 313. In addition, further, when the first outlet channel 31 is communicated with the outlet pipeline of the plug valve 100, for example, the second end 315 is first communicated with the outlet pipeline of the plug valve 100, at this time, the flow rate of the gas is gradually increased by the gradually increasing groove depth in the rotation process of the valve core 3, so that the linear control of the flow rate of the gas can be better performed, thereby being beneficial to the linear control of the fire power of the gas appliance, further, the valve core 3 is continuously rotated, so that the first through hole 313 is opposite to the outlet pipeline of the plug valve 100, at this time, the flow rate of the gas is maximum, further, the valve core 3 is continuously rotated, the flow rate of the gas is gradually reduced, in addition, when the valve core 3 is rotated to the state that the first end 314 is opposite to the outlet pipeline of the plug valve 100, the groove depth of the first end 314 is gradually reduced, so that the flow rate of the gas is linearly reduced, finally, the first air outlet channel 31 is disconnected from the air outlet pipeline of the plug valve 100. Therefore, the gas flow flux can be better and linearly controlled, the control effect is good, the actual requirements of users can be better met, in addition, the gas stove is taken as an example, the gas flow flux of the gas stove or the firepower of the gas stove can not be suddenly increased or reduced in the process of opening the gas stove or closing the gas stove, and the flame leaving risk of the gas stove can be avoided to a certain extent.

Thus, the valve core 3 for the plug valve 100 according to the embodiment of the present invention may facilitate the height reduction of the valve core 3 by providing the first recess 311 surrounding the valve core 3 in the horizontal direction, thereby facilitating the slim design of the plug valve 100, and may further facilitate the linear control of the gas throughput of the plug valve 100 by gradually increasing the groove depth of the first and

second ends

314 and 315 of the first recess 311 in the direction toward the first through hole 313 and locating the first through hole 313 between the first and

second ends

314 and 315.

In some embodiments of the present invention, a distance between the first end portion 314 and the first through hole 313 is greater than a distance between the second end portion 315 and the first through hole 313, the first air outlet channel 31 further includes a first cut groove 312, the first cut groove 312 is located between the first end portion 314 and the first through hole 313, and a groove depth of the first cut groove 312 gradually increases in a direction from the first end portion 314 to the first through hole 313.

Referring specifically to fig. 1 and 2, the groove depth of the first groove 311 is constant from the first end 314 of the first groove 311 to the first through hole 313, that is, the part of the groove from the first end 314 of the first groove 311 to the first through hole 313 is a flat groove, and in order to further achieve linear regulation of the gas flow rate, by providing the first cut groove 312 in the flat groove and making the groove depth of the first cut groove 312 gradually increase in the direction from the first end 314 to the first through hole 313, so that, taking the rotation direction of the spool 3 as the rotation direction from the first through hole 313 to the first end 314 as an example, the gas flow rate of the first through hole 313 is maximum during the rotation of the spool 3 in this direction, and then gradually decreases as the groove depth of the first cut groove 312 in this direction during the rotation to the first cut groove 312, so as to achieve linear control of the gas flow rate, then, when the valve element 3 rotates to the position of the first end 314 of the first recess 311, the groove depth of the first end 314 also continues to be gradually reduced, thereby achieving further linear control of the fuel flow rate. Here, taking "rotate to the first cut groove 312" as an example, the rotation to the first cut groove 312 herein means that the first cut groove 312 is opposite to the air outlet pipe of the plug valve 100, which is not described in detail above.

In addition, regarding the gradual decrease in the groove depth of the first cut groove 312 and the gradual decrease in the groove depth of the first end portion 314 in the rotation direction of the valve body 3, the inclination angle of the bottom surface of the first cut groove 312 and the inclination angle of the first end portion 314 may be the same, taking an inclined surface as an example, and at this time, the bottom surface of the first cut groove 312 and the bottom surface of the first end portion 314 are in the same curved surface; the inclination angle of the bottom surface of the first cut groove 312 and the inclination angle of the first end portion 314 may not be the same, and at this time, the inclination angle of the first end portion 314 may be set according to actual conditions, for example, the inclination angle of the first end portion 314 may satisfy the switching of the gas appliance from the combustion state to the closed state.

Alternatively, as shown in fig. 1, the groove width of the first incised groove 312 is smaller than the groove width of the first recess 311. Therefore, when the first cutting groove 312 is opposite to the air outlet pipeline of the plug valve 100, part of the first groove 311 is also opposite to the air outlet pipeline of the plug valve 100, and the first groove 311 of the part is a flat groove, that is, the groove depth of the first groove 311 of the section is equal, so that the width of the first cutting groove 312 can be adjusted according to actual conditions to regulate and control the linear control state of the fuel gas flow in the stage, for example, the width of the first cutting groove 312 can be designed according to different requirements, and therefore several types of plug valves 100 with different fuel gas flow are designed to be applied to fuel gas appliances with different requirements.

In still another example, the width of the first cut groove 312 may be equal to the width of the first groove 311.

In still another example, the groove depth of the first groove 311 may gradually increase or gradually decrease in a portion between the first end 314 of the first groove 311 and the first through hole 313, so that the gas flow rate of the valve element 3 may be more flexibly and accurately linearly controlled, that is, the gas flow rate of the valve element 3 may be linearly controlled by the cooperation of the first groove 311 and the first through hole 312.

In some embodiments of the present invention, a second air outlet passage 32 is further formed on the outer peripheral wall of the valve body 3, the second air outlet passage 32 includes a second through hole 323 and a second groove 321, the second through hole 323 is used for communicating the air inlet passage 33 and the second groove 321, and the second groove 321 extends along the circumferential direction of the valve body 3 and is spaced apart from the first groove 311 in the axial direction of the valve body 3.

For example, as shown in fig. 1, the first recess 311 is below the second recess 321, and the first recess 311 and the second recess 321 both surround the outer peripheral wall of the valve plug 3 along the horizontal direction, wherein the first outlet channel 31 is used for communicating with a big fire outlet pipe of the plug valve 100, and the second outlet channel 32 is used for communicating with a small fire outlet pipe of the plug valve 100, so that the first recess 311 and the second recess 321 both surround the outer peripheral wall of the valve plug 3 along the horizontal direction, and the height of the valve plug 3 can be reduced to a certain extent, thereby facilitating the ultra-thin design of the plug valve 100.

In still another example, according to practical requirements, one of the first groove 311 and the second groove 321 may extend in a horizontal direction, and the other of the first groove 311 and the second groove 321 may extend in a spiral direction, which is not limited herein.

Alternatively, as shown in fig. 3, in the circumferential direction, the second groove 321 has a third end 325 and a fourth end 326, the second through hole 323 is located between the third end 325 and the fourth end 326, and the groove depth of the third end 325 and/or the fourth end 326 gradually increases in a direction toward the second through hole 323. In the first example, only the groove depth of the third end 325 gradually increases in a direction toward the second through hole 323; in the second example, only the groove depth of the fourth end portion 326 gradually increases in a direction toward the second through hole 323; in the third example, the groove depth of the third end 325 gradually increases in a direction toward the second through hole 323, while the groove depth of the fourth end 326 gradually increases in a direction toward the second through hole 323. Therefore, in the process of rotating the valve core 3, the second groove 321 can also perform linear control on the gas flow flux well, and can perform linear control on the gas flow flux, so that the control effect is good, and the actual requirements of users can be met.

Alternatively, as shown in fig. 3, the distance from the third end 325 to the second through hole 323 is greater than the distance from the fourth end 326 to the second through hole 323, and the second outlet passage 32 further includes a second cut groove (not shown) between the third end 325 and the second through hole 323, the second cut groove having a groove depth gradually increasing in the direction from the third end 325 to the second through hole 323.

Specifically, in the case where the groove depth of the second groove 321 is constant between the third end 325 of the second groove 321 and the second through hole 323, that is, the portion of the groove between the third end 325 of the second groove 321 and the second through hole 323 is a flat groove, in order to further achieve linear regulation of the gas flow rate, by providing a second cut groove in the flat groove and making the groove depth of the second cut groove gradually increase in the direction from the third end 325 to the second through hole 323, such that, taking the case where the rotation direction of the spool 3 is the rotation direction from the second through hole 323 to the third end 325, the gas flow rate of the second through hole 323 is maximized during the rotation of the spool 3 in this direction, and then gradually decreases as the groove depth of the second cut groove in this direction during the rotation to the second cut groove, so as to achieve linear control of the gas flow rate, and then, when the spool 3 is rotated to the position of the third end 325 of the second groove 321, the groove depth of the third end 325 also continues to taper, thereby enabling further linear control of the fuel flow rate. Here, taking "rotate to the second slot" as an example, the rotation to the second slot means that the second slot is opposite to the air outlet pipe of the plug valve 100, which is not described in detail above.

In addition, regarding the gradual decrease of the groove depth of the second notch and the gradual decrease of the groove depth of the third end 325 in the rotation direction of the valve body 3, the inclination angle of the bottom surface of the second notch and the inclination angle of the third end 325 may be the same, taking an inclined surface as an example, and at this time, the bottom surface of the second notch and the bottom surface of the third end 325 are in the same curved surface; the inclination angle of the bottom surface of the second slot and the inclination angle of the third end 325 may not be the same, and in this case, the inclination angle of the third end 325 may be set according to actual conditions, for example, the inclination angle of the third end 325 may satisfy the switching of the gas appliance from the combustion state to the closed state.

Optionally, the second undercut groove has a groove width smaller than the groove width of the second recess 321. Therefore, when the second cutting groove is opposite to the air outlet pipeline of the plug valve 100, part of the second groove 321 is opposite to the air outlet pipeline of the plug valve 100, and the second groove 321 is a flat groove, that is, the groove depth of the second groove 321 at the section is equal, so that the width of the second cutting groove can be adjusted according to actual conditions to regulate and control the linear control state of the fuel gas flow at the stage, for example, the width of the second cutting groove can be designed according to different requirements, and therefore several plug valves 100 with different fuel gas flow are designed to be applied to fuel gas appliances with different requirements.

In still other examples, the width of the second undercut groove may be equal to the width of the second groove 321.

In still another example, the groove depth of the portion of the second groove 321 between the first end 314 of the second groove 321 and the second through hole 323 may also gradually increase or gradually decrease, so that the gas flow rate of the valve element 3 may be more flexibly and accurately linearly controlled, that is, the gas flow rate of the valve element 3 may be linearly controlled by the cooperation of the second groove 321 and the second recessed through hole.

In some embodiments of the present invention, the second groove 321 is in communication with the small fire ejector tube, and the second outlet passage 32 further includes a plurality of micro-fire holes 324, wherein the micro-fire holes 324 are circumferentially spaced apart from the second groove 321. Therefore, the second air outlet channel 32 can realize linear control of the gas flow through cooperation of the second grooves 321, the second cutting grooves and the second through holes 323, and then realize interval control of the gas flow through the micro fire holes 324 spaced from the second grooves 321, so that gear control of the gas appliance can be realized to a certain extent.

The invention also provides a plug valve 100 with the valve core 3 of the embodiment, wherein the plug valve 100 comprises a valve body and the valve core 3, and the valve core 3 is arranged in the valve body. Specifically, a valve core 3 accommodating cavity is formed in the valve body, and the valve core 3 is rotatably arranged in the valve core 3 accommodating cavity.

Therefore, according to the plug valve 100 of the embodiment of the invention, the valve core 3 of the embodiment is arranged, so that the gas flow flux of the plug valve 100 can be better linearly controlled, the flexibility is good, the control is accurate, and in addition, the height of the valve core 3 is lower, so that the ultra-thin design of the plug valve 100 can be facilitated.

The invention also provides a gas appliance with the plug valve 100 of the embodiment.

According to the gas appliance provided by the invention, the plug valve 100 of the embodiment can be used for better linearly controlling the gas circulation, so that the linear control on the firepower is better realized, and meanwhile, due to the ultra-thin design of the plug valve 100, the assembly of the gas appliance is favorably optimized.

Referring to fig. 1 to 13, a schematic structural view of a plug valve 100 of a gas range according to an exemplary embodiment will be described.

As shown in fig. 6, 8, 10 and 12, the plug valve 100 includes a valve body 1, and a valve element accommodating chamber 111, an air inlet passage, an outer annular passage, an inner annular passage 140 and a solenoid valve accommodating chamber 151 are formed in the valve body 1.

Referring again to fig. 5, the air intake passage is configured by an air intake pipe 12 and a first communicating pipe 16, the air intake pipe 12 extends in the front-rear direction, the air intake pipe 12 has a first extending axis X1, the first communicating pipe 16 extends in the left-right direction, the solenoid valve accommodating chamber 151 extends in the front-rear direction, the rear end of the air intake pipe 12 passes through the pipe wall of the first communicating pipe 16 to communicate the air intake pipe 12 with the first communicating pipe 16, and the right end of the first communicating pipe 16 passes through the pipe wall of the solenoid valve accommodating chamber 15 to communicate with the battery valve accommodating chamber of the solenoid valve accommodating chamber 15. Further, the inner ring channel 140 includes an inner ring pipe 14, a rear end of the inner ring pipe 14 extends to a lower end of the valve element receiving cavity 111, so that the inner ring channel 140 of the inner ring pipe 14 is communicated with the valve element receiving cavity 111, the inner ring pipe 14 has a third extending axis X3, the outer ring channel is configured by an outer ring pipe 13 and a second communicating pipe 17, the outer ring pipe 13 extends in a front-rear direction, the second communicating pipe 17 extends in a left-right direction, the outer ring pipe 13 has a second extending axis X2, wherein the rear end of the outer ring pipe 13 penetrates through a pipe wall of the second communicating pipe 17, so that the outer ring pipe 13 is communicated with the second communicating pipe 17, and a left end of the second communicating pipe 17 is communicated with the valve element receiving cavity 111. The left end of the first communicating pipe 16 can be blocked by a blocking screw 50, and the right end of the second communicating pipe 17 can also be blocked by the blocking screw 50.

The valve core accommodating cavity 111 is located in the vertically extending valve core accommodating tube 11, the valve seat 45 is installed above the valve core accommodating tube 11 to seal the valve core accommodating cavity 111, a through hole allowing the valve rod 41 to penetrate is formed in the valve seat 45, the damping stop block 42 is installed on the valve seat 45, the damping stop block 42 is sleeved on the valve rod 41, when the valve rod 41 rotates, the damping stop block 42 influences the rotation of the valve rod 41, so that a user has certain touch feeling when the drive knob rotates, when the drive knob rotates to a corresponding gear, the damping stop block 42 can limit the rotation of the valve rod 41, therefore, if the user wants to drive the drive knob to rotate to a next gear, acting force applied to the knob needs to be increased, and thus clear gear prompt can be given to the user. In addition, the damping stop 42 may include a stop member, which may be sounded when the valve rod 41 triggers the stop member, so as to better remind the user that the valve rod has been rotated to the corresponding gear position, so that the user does not need to look down, and the user experience may be improved.

The lower end of the valve rod 41 extends into the valve seat 45, the lower end of the valve rod 41 is provided with a boss, clamping grooves are formed on the valve seat 45 and the valve core 3, the boss can be matched with the clamping grooves, the lower end of the valve rod 41 is provided with a valve needle 46, namely one end of the valve needle 46 is abutted to the valve rod 41, the other end of the valve needle extends into the valve core 3, a gasket 48, an O-shaped ring 49 and a valve core spring 47 are sleeved on the valve needle 46 extending into the valve core 3, so that the valve needle 46 is positioned at a first position under the action of the valve core spring 47, at the moment, the boss of the valve rod 41 is matched with the clamping groove of the valve seat 45, so that the valve rod 41 cannot rotate under the action of the clamping groove of the valve seat 45, when the driving valve rod 41 moves downwards, acting force can overcome the elastic force of the valve core spring 47, so that the boss of the valve rod 41 can be disengaged from the clamping groove of the valve seat 45, at the moment, the boss of the valve rod 41 can only be matched with the clamping groove of the valve core 3, thus, the valve rod 41 can be rotated, and the valve rod 41 can drive the valve core 3 to rotate when rotating, so that the first air outlet channel 31 on the valve core 3 is correspondingly matched with the first air inlet 142 of the inner ring channel 140, and the second air outlet channel 32 is matched with the second air inlet 132 of the outer ring channel, thereby adjusting the fire power.

Further, the lower end of the valve needle 46 is provided with a shift lever 53, a first shift lug 531 and a second shift lug 532 are formed on the shift lever 53, when the valve rod 41 is driven to move downwards, the acting force can overcome the elastic force of the valve core spring 47, so that the valve needle 46 can be abutted against the first shift lug 531, when the valve rod 41 drives the valve needle 46 to move downwards continuously, the valve needle 46 can drive the shift lever 53, so that the shift lever 53 rotates around the axis X of the shift lever 53, the shift lever 53 rotates to drive the second shift lug 532 to rotate around the axis X of the shift lever 53, so that the second shift lug 532 can drive the electromagnetic valve 2, so that the electromagnetic valve 2 unlocks the electromagnetic valve accommodating cavity 151, and thus, the electromagnetic accommodating cavity 151 can be communicated with the air inlet channel and the valve core accommodating cavity 111, and external gas can enter the valve core accommodating cavity 111 through the air inlet channel electromagnetic accommodating cavity. The solenoid valve 2 can be mounted on the solenoid valve accommodating tube 15 through a fastening screw, a transmission block 55 is further disposed at one end of the solenoid valve 2 facing the shift lever 53, and the second shift lug 532 can transmit an acting force to the solenoid valve 2 through the transmission block 55, so that the solenoid valve 2 can unlock the electromagnetic valve accommodating cavity 151.

Install the clamp plate 44 between valve rod 41 and valve body 1, the pot head of clamp plate 44 is established on the assembly groove of valve rod 41, and can carry out spacing and fixed through split washer 43, the other end of clamp plate 44 can be positioned in the constant head tank of valve body 1, like this, when valve rod 41 moves down, clamp plate 44 can take place to warp, when the lug 411 of valve rod 41 rotates to the position that corresponds with the draw-in groove of disk seat 45, and stop applying the decurrent effort, case spring 47 can resume deformation, like this, make valve rod 41 and needle 46 can move up under the effect of case spring 47, and under the effect of clamp plate 44, can prevent that valve rod 41 and needle 46 from dashing out.

In addition, the bottom of the valve body 1 is provided with an opening, the opening can be closed through a bottom plate 54, the bottom plate 54 can be assembled through fastening screws, and a bottom plate sealing ring 52 is arranged between the bottom plate 54 and the valve body 1, so that a gap between the bottom plate 54 and the valve body 1 can be well sealed.

A microswitch 51 can also be mounted on the valve body 1, and the microswitch 51 can be mounted on the valve body 1 by fastening screws.

The valve core 3 is cylindrical, an air inlet channel 33 is formed in the valve core 3, a first air outlet channel 31 and a second air outlet channel 32 are formed on the outer peripheral wall of the valve core 3, the first air outlet channel 31 is communicated with the inner ring pipe 14, the first air outlet channel 31 comprises a first through hole 313, a first groove 311 and a first cut groove 312, the first groove 311 extends along the circumferential direction of the valve core 3 and is provided with a first end 314 and a second end 315 in the circumferential direction, the first through hole 313 is positioned between the first end 314 and the second end 315, and the groove depth of the first end 314 and the second end 315 gradually increases in the direction towards the first through hole 313. The distance from the first end 314 to the first through hole 313 is greater than the distance from the second end 315 to the first through hole 313, the first air outlet channel 31 further includes a first cut groove 312, the first cut groove 312 is located between the first end 314 and the first through hole 313, and the groove depth of the first cut groove 312 gradually increases in the direction from the first end 314 to the first through hole 313. The groove width of the first cut groove 312 is smaller than that of the first recess groove 311.

The second outlet channel 32 is located above the first outlet channel 31, the second outlet channel 32 is communicated with the outer ring pipe 13, the second outlet channel 32 comprises a second through hole 323 and a second groove 321, the second through hole 323 is used for communicating the inlet channel 33 and the second groove 321, and the second groove 321 extends along the circumferential direction of the valve core 3 and is spaced from the first groove 311 in the axial direction of the valve core 3. In the circumferential direction, the second groove 321 has a third end 325 and a fourth end 326, the second through hole 323 is located between the third end 325 and the fourth end 326, the groove depth of the third end 325 and/or the fourth end 326 gradually increases in a direction toward the second through hole 323, the distance between the third end 325 and the second through hole 323 is greater than the distance between the fourth end 326 and the second through hole 323, the second outlet passage 32 further includes a second incised groove, the second incised groove is located between the third end 325 and the second through hole 323, the groove depth of the second incised groove gradually increases in a direction from the third end 325 to the second through hole 323, and the groove width of the second incised groove is smaller than the groove width of the second groove 321.

The second groove 321 is communicated with the small fire ejector pipe, that is, the second groove 321 is communicated with the small fire ejector pipe through an outer ring pipe, the second air outlet passage 32 further includes a micro fire hole 324, and the micro fire hole 324 is spaced apart from the second groove 321 in the circumferential direction.

The operation of one embodiment of plug valve 100 is described below with reference to the drawings.

Firstly, the valve rod 41 is pressed downwards, the valve rod 41 drives the valve needle 46 to move downwards, so that the valve needle 46 can drive the first poking lug 531, the first poking lug 531 can drive the poking rod 53 to rotate around the axis of the poking rod 53 after receiving acting force, at this moment, the second poking lug 532 of the poking rod 53 can drive the transmission block 55 to transmit the acting force to the electromagnetic valve 2, the electromagnetic valve 2 can unlock the plug of the electromagnetic valve accommodating cavity 151, so that the air inlet channel and the valve core accommodating cavity 111 are communicated, and gas can enter the valve core accommodating cavity 111 from the air inlet channel.

The gas entering the valve core accommodating cavity 111 can enter the inner annular gas passage and the outer annular gas passage of the valve core 3 respectively, at this time, the projection 411 of the valve rod 41 is disengaged from the slot of the valve seat 45, so that the valve rod 41 can be rotated, when the valve rod 41 is rotated, the projection 411 of the valve rod 41 is engaged with the slot of the valve core 3, at this time, the valve rod 41 can drive the valve core 3 to rotate, so that the first gas outlet channel 31 of the valve core 3 can be opposite to the first gas inlet hole 142 of the valve seat 45, the second gas outlet channel 32 of the valve core 3 can be opposite to the second gas inlet hole 132 of the valve seat 45, therefore, the gas entering the inner annular gas passage can enter the inner annular gas passage 140 through the first gas outlet channel 31, the gas entering the outer annular gas passage can enter the outer annular gas passage through the second gas outlet channel 32, and because the first gas outlet channel 31 and the second gas outlet channel 32 are provided with a plurality, at this time, different amounts of fire power can be adjusted by rotating the valve rod 41 so that the different first outlet passage 31 and the different second outlet passage 32 of the valve body 3 are respectively opposed to the first inlet hole 142 and the second inlet hole 132 of the valve body 1.

Further, when adjusting the firepower size, disk seat 45 has on the valve body 1, be provided with damping dog 42 on the disk seat 45, damping dog 42 cover is established on valve rod 41, can trigger damping dog 42 when valve rod 41 rotates, when rotating to corresponding gear, the user not only can receive to rotate to corresponding gear in the sense of touch, damping dog 42 can also be triggered and send out the sound effect, thereby remind the user to rotate to gear department, from this, the user need not to hang down to look over, can improve user and use experience.

In addition, in the process that the valve stem 41 drives the valve core to rotate, due to the first air outlet channel 31 and the second air outlet channel 32 arranged on the valve core 3, specifically, the first groove 311, the first notch 312 and the first through hole 313 included in the first air outlet channel 31, and the second groove 321, the second notch and the second through hole 323 included in the second air outlet channel 32, the linear control of the ventilation amount of the plug valve 100 can be better realized.

Specifically, taking the first air outlet channel 31 as an example, the second end 315 with an inclined surface is firstly opposite to the first air inlet 142 in the rotating process, so that when the first end is just communicated with the flow channel, the flow rate of the gas is gradually increased, and when a user adjusts the flame clockwise towards the closing direction, the change of the gas flow rate can be more finely controlled, so that the inner ring flame and the outer ring flame of the gas stove are synchronously adjusted from the maximum flame to the minimum flame, and the control effect is good. In the related art, when the rotary valve core 3 is conducted, the first vent hole 313 is directly conducted with the first air inlet hole 142, and a gradual change process does not exist, so that the flow provided when the gas channel is just conducted is suddenly changed, and explosion is easily generated, thereby affecting the ignition and combustion effects.

In addition, in the present application, in the process of counterclockwise opening by a user, when the first air inlet hole 142 is opposite to the first through hole 313, the flow rate of the gas is the largest, at this time, the valve element 3 is continuously rotated, so that the combination of the first groove 311 and the first cut groove 312 of the first air outlet channel 31 is opposite to the first air inlet hole 142, at this time, only the bottom surface of the first cut groove 312 has a slope and is a linear change, which not only can realize linear control of the flow rate of the gas, but also can more finely adjust the flow rate of the gas, or, can satisfy the supply amount of the gas and make the linear adjustment of the flow rate of the gas smoother, wherein, it should be noted that although a groove-shaped structure is also provided to perform linear adjustment in related patents, most of the bottom surface of the groove-shaped structure is made to have a certain curved surface in order to make the linear adjustment smoother, a multi-axis machine tool is required, when the case pivoted, raise the depth of cut, high to the requirement of equipment processing, production efficiency is low, and this application is through the combination of first recess 311, first tangential groove 312, can be so that the slope of the bottom surface of first tangential groove 312 is the straight line change, and the requirement is low to equipment processing, does not need case 3 rotatory, only need milling cutter direct straight line processing can, production efficiency is low.

When the gas stove is not used, the valve rod 41 can be rotated reversely, or can be rotated continuously according to the rotation direction of the valve rod 41, so that the protrusion 411 of the valve rod 41 corresponds to the clamping groove of the valve seat 45, at this time, the acting force given to the valve rod 41 by a user is removed, under the action of the valve core spring 47, the valve rod 41 and the valve needle 46 can move upwards, at this time, the electromagnetic valve 2 can block the electromagnetic valve accommodating cavity 151 again to break the communication state between the air inlet channel and the valve core accommodating cavity 111, and under the action of the electromagnetic valve 2, the electromagnetic valve 2 can drive the second poking lug 532 of the poking rod 53, so that the poking rod 53 rotates to the original position, and when the valve rod 41 moves upwards, the poking rod cannot be flushed out and fall off under the action of the pressing plate 44.

Other constructions and operations of plug valves and gas appliances according to embodiments of the present invention are known to those of ordinary skill in the art and will not be described in detail herein.

In the description herein, references to the description of the terms "some embodiments," "optionally," "further," 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 invention. In this specification, the schematic representations of the terms used above do not necessarily 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.

While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A valve core for a plug valve is characterized in that the valve core is rotatably arranged in the plug valve, an air inlet channel is formed in the valve core, a first air outlet channel is formed on the outer peripheral wall of the valve core,

the first air outlet channel comprises a first through hole and a first groove, the first through hole is used for communicating the air inlet channel and the first groove, the first groove extends along the circumferential direction of the valve core and is provided with a first end part and a second end part in the circumferential direction, the first through hole is positioned between the first end part and the second end part, and the groove depth of the first end part and/or the second end part is gradually increased in the direction towards the first through hole.

2. The valve cartridge for a plug valve according to claim 1, wherein a distance from the first end portion to the first through hole is greater than a distance from the second end portion to the first through hole, the first outlet passage further includes a first cut groove between the first end portion and the first through hole, and a groove depth of the first cut groove gradually increases in a direction from the first end portion to the first through hole.

3. The valve cartridge for a plug valve of claim 2, wherein the groove width of said first undercut groove is less than the groove width of said first groove.

4. The valve element of claim 1, wherein a second air outlet channel is further formed on the outer peripheral wall of the valve element, the second air outlet channel comprises a second through hole and a second groove, the second through hole is used for communicating the air inlet channel and the second groove, and the second groove extends along the circumferential direction of the valve element and is spaced from the first groove in the axial direction of the valve element.

5. The valve cartridge for a plug valve according to claim 4, wherein the second groove has a third end and a fourth end in a circumferential direction, the second through hole is located between the third end and the fourth end, and a groove depth of the third end and/or the fourth end gradually increases in a direction toward the second through hole.

6. The valve cartridge for a plug valve according to claim 5, wherein a distance between the third end portion and the second through hole is greater than a distance between the fourth end portion and the second through hole, the second outlet passage further comprising a second slot between the third end portion and the second through hole, a groove depth of the second slot gradually increasing in a direction from the third end portion to the second through hole.

7. The valve cartridge for a plug valve of claim 6, wherein the groove width of said second undercut groove is less than the groove width of said second groove.

8. The valve element for a plug valve according to claim 4, wherein the second groove is communicated with a small fire injection pipe, and the second air outlet channel further comprises a micro fire hole which is circumferentially spaced apart from the second groove.

9. A plug valve, comprising:

a valve body; and

the valve cartridge of any one of claims 1-8, disposed in the valve body.

10. A gas appliance, comprising:

a burner; and

the plug valve of claim 9, said plug valve being connected to said burner.