CN113819271A

CN113819271A - Gas valve and gas stove with same

Info

Publication number: CN113819271A
Application number: CN202111165870.0A
Authority: CN
Inventors: 苏慧玲; 姚青; 严力峰; 俞瑜
Original assignee: Ningbo Fotile Kitchen Ware Co Ltd
Current assignee: Ningbo Fotile Kitchen Ware Co Ltd
Priority date: 2021-09-30
Filing date: 2021-09-30
Publication date: 2021-12-21

Abstract

The invention discloses a gas valve and a gas stove with the same, wherein the gas valve comprises a valve body and a valve core, the valve body is provided with a gas inlet hole communicated with a gas inlet channel, an inner ring gas outlet hole communicated with an inner ring channel and an outer ring gas outlet hole communicated with an outer ring channel, and the gas inlet hole, the inner ring gas outlet hole and the outer ring gas outlet hole are positioned at the same longitudinal height on the valve body and are sequentially distributed at intervals; the outer peripheral wall of the valve core is provided with a horizontally extending air guide channel, and the air guide channel is at the same longitudinal height with the air inlet hole, the inner ring air outlet hole and the outer ring air outlet hole; when the valve core rotates, the air guide channel is selectively communicated with the air inlet hole, the inner ring air outlet hole and the outer ring air outlet hole at the same time. The invention realizes the technical effects of good gas inlet synchronism, good gas connectivity, compact structure and the like, and makes the gas valve thinner.

Description

Gas valve and gas stove with same

Technical Field

The invention relates to the technical field of gas valves, in particular to a gas valve and a gas stove with the same.

Background

The gas valve in the gas stove is a core part of a household gas stove, and the existing mechanical gas stoves are ignited, firepower is adjusted and flameout through the gas valve. Generally, a gas stove is provided with an inner ring fire and an outer ring fire, a gas valve comprises a valve body and a valve core which is rotatablely matched in the valve body, and each gas outlet channel for ventilation is arranged on the valve body of the gas valve;

however, the multi-channel gas valves, in particular plug valves, which are currently available, have the following technical problems:

1. the vent holes of each channel of the existing multi-channel valve body are generally distributed on the valve core in a longitudinally staggered mode, so that the valve core is required to be ensured to have enough height, the height of the valve core is difficult to reduce, the height of the valve body structure cannot be reduced, and the height of the whole gas stove is limited finally;

2. the flow regulation of the channel is mainly determined by the intersection area of the closure and the body, and the regulation range of the common multi-channel valve body is 170 degrees plus, and the regulation range is limited.

Disclosure of Invention

The invention aims to overcome the defects in the prior art and provides a gas valve capable of realizing an ultrathin complete machine and a gas stove with the gas valve.

The invention solves the technical problems through the following technical scheme:

the invention provides a gas valve, which comprises a valve body and a valve core, wherein the valve body is provided with an air inlet communicated with an air inlet channel, an inner ring air outlet communicated with an inner ring channel and an outer ring air outlet communicated with an outer ring channel;

the outer peripheral wall of the valve core is provided with a horizontally extending air guide channel, and the air guide channel is at the same longitudinal height with the air inlet hole, the inner ring air outlet hole and the outer ring air outlet hole;

when the valve core rotates, the air guide channel is selectively communicated with the air inlet hole, the inner ring air outlet hole and the outer ring air outlet hole at the same time.

According to the technical scheme, the air guide channels on the same horizontal line are matched with the air inlet holes, the inner ring air outlet holes and the outer ring air outlet holes at the same longitudinal height in a coordinated mode, so that the technical effects of good air inlet synchronism, good air connectivity, compact structure and the like are achieved, and the gas valve is thinner.

The vent holes of different channels are at the same height and are difficult to arrange, the angle between the central lines of the inner ring and the outer ring on the valve body is 30 degrees + 200 degrees (taking a 170-degree valve as an example, the inner ring and the outer ring can be adjusted by 30 degrees-170 degrees, the angle is 140 degrees), the angle is minimum and can be more than 120 degrees, the distance between the inner ring and the outer ring is long, the volume of the whole machine is influenced on the arrangement of an air pipe, and the valve is inconvenient.

Preferably, the overlapping size of the air inlet hole, the inner ring air outlet hole and the outer ring air outlet hole relative to the air guide channel on the valve core changes along with the rotation of the valve core.

According to the technical scheme, the total flow of the fuel gas is adjusted by utilizing the overlapping size of each air outlet and the air guide channel.

Preferably, the valve spool is rotatable relative to the valve body between an initial point and a final point.

According to the technical scheme, the valve core rotates in a direction between the initial point and the final point, so that the safety of a user is guaranteed.

Preferably, the air guide channel comprises a first channel tail end and a second channel tail end which are positioned at two ends, the first channel tail end is positioned at one side of the air inlet hole, and the second channel tail end is positioned at one side of the outer ring air outlet hole.

According to the technical scheme, the specific installation positions are limited at the two ends of the gas guide channel, and the proportion of the fuel gas introduced into each fuel gas outlet can be adjusted.

Preferably, when the valve element starts to rotate at the initial point, an overlapping area of the air guide passage with respect to the intake port at the first passage end increases with the rotation of the valve element.

This technical scheme utilizes the size of leading to the relative gas entry of groove, realizes that the gas total flow is adjusted, and the gas lets in the proportion of each gas export this moment, can realize the synchronous fire of wide band (with big or small) for the adjustable range grow of synchronous fire.

Preferably, the overlapping area of the air guide passage at the first passage end with respect to the air intake hole increases from 0.

Preferably, when the valve core starts to rotate at the initial point, the tail end of the second channel is not overlapped with the outer ring air outlet, and the overlapping area of the air guide channel relative to the inner ring air outlet and the outer ring air outlet is not changed.

Preferably, when the valve core rotates to the terminal point, the overlapping area of the air guide channel at the second channel terminal relative to the outer ring air outlet hole decreases along with the rotation of the valve core.

Preferably, the overlapping area of the air guide channel at the end of the second channel relative to the outer ring air outlet hole is reduced to 0.

Preferably, after the overlapping area of the air guide channel at the second channel end with respect to the outer ring outlet hole is reduced to 0, the overlapping area of the air guide channel at the second channel end with respect to the inner ring outlet hole is reduced with the rotation of the spool.

The technical scheme is as follows: the size that utilizes logical groove relative gas entry realizes the gas total flow and adjusts, and the gas lets in the proportion of each gas export this moment, can realize the synchronous fire of wide band (with big or small) for the adjustable range grow of synchronous fire.

Preferably, the air guide channel is a section of through groove formed along the outer peripheral wall of the closure.

This technical scheme utilizes to lead to the groove and can adjust the scope of synchronous fire then through the adjustment of groove width, and is comparatively simple and convenient.

Preferably, the width of the through groove gradually changes in the up-down direction along the direction toward the end of the second channel.

Preferably, at the end of the second channel, the air guide channel extends from a first wider width H₁Changed to a narrower second width H₂。

Preferably, the gas inlet leading into the obturator is arranged on the side surface or the lower surface of the valve body.

According to the technical scheme, the gas inlet which is communicated with the obturator is led to the side face or the lower surface of the valve body, so that lower gas inlet or side gas inlet is realized.

Preferably, the distance between the inner ring air outlet hole and the air inlet hole is smaller than the distance between the inner ring air outlet hole and the outer ring air outlet hole.

According to the technical scheme, the air outlet of the single inner ring can be adjusted, when the air outlet channel and the air outlet of the outer ring have no intersecting area, the outer ring has no air, and the overlapping area of the inner ring and the lateral groove is independently adjusted.

Preferably, the central lines of the air inlet holes, the inner ring air outlet holes and the outer ring air outlet holes are at the same height, and the central lines of the inner ring air outlet holes and the outer ring air outlet holes and the horizontal line of the air inlet holes are distributed at acute angles on the basis of the horizontal line of the air inlet holes.

This technical scheme to realize the compact structure of valve body height, upwards circumferentially.

Preferably, the central lines of the air inlet hole, the inner ring air outlet hole and the outer ring air outlet hole are at the same height, and the central lines of the air inlet hole, the inner ring air outlet hole and the outer ring air outlet hole are parallel to each other.

Preferably, the inner ring air outlet hole is arranged higher than the outer ring air outlet hole.

According to the technical scheme, a certain hole position fall exists between the inner ring air outlet hole and the outer ring air outlet hole, so that the overlapping area of the outer ring air outlet holes can be reduced at the tail end of the second channel by the air guide channel.

Preferably, the valve further comprises a valve core cavity, the valve core cavity is arranged inside the valve core, and the valve core cavity and the shutter are mutually independent.

According to the technical scheme, the flow control realizes that no fuel gas exists at the valve core through the slotted hole (non-through hole) on the valve core, and the whole air tightness of the valve is good.

Preferably, the valve core cavity is further provided with a valve core small hole, and the valve core small hole corresponds to the air inlet hole, the inner ring air outlet hole and the outer ring air outlet hole respectively.

According to the technical scheme, the adjustable minimum fire is small enough and the processing is simple due to the completely independent channel.

Preferably, the air inlet valve further comprises an electromagnetic valve, wherein the electromagnetic valve is arranged in the valve body and moves relative to the valve body to control the on-off of the air inlet channel.

The invention provides a gas stove which is characterized by comprising the gas valve according to any one of the above items.

The positive progress effects of the invention are as follows: the requirement of the ultrathin complete machine on the stove valve body is that the valve body is small in height, and particularly the height of the whole is less than 30 mm. The gas guide channels on the same horizontal line are matched with the gas inlet holes, the inner ring gas outlet holes and the outer ring gas outlet holes at the same longitudinal height in a coordinated mode, so that the technical effects of good gas inlet synchronism, good gas connectivity, compact structure and the like are achieved, and the gas valve is thinner.

Drawings

Fig. 1 is a schematic view of the overall structure of a gas valve according to embodiment 1 of the present invention.

Fig. 2 is a side sectional view of a gas valve structure of embodiment 1 of the present invention.

Fig. 3 is a top sectional view of a gas valve structure of embodiment 1 of the present invention.

Fig. 4A is a schematic view of the communication relationship of the valve element of embodiment 1 of the present invention when the rotation angle is 0 °.

Fig. 4B is a schematic view of the communication relationship of the valve element of embodiment 1 of the present invention when the rotation angle is 90 °.

Fig. 4C is a schematic view of the communication relationship when the rotation angle of the spool is 140 ° according to embodiment 1 of the present invention.

Fig. 4D is a schematic view of the communication relationship of the valve element of embodiment 1 of the present invention when the rotation angle is 180 °.

Fig. 4E is a schematic view of the communication relationship of the valve element of embodiment 2 of the present invention when the rotation angle is 0 °.

FIG. 5 is a schematic view of the structure of each air outlet on the gas valve body of the present invention.

FIG. 6 is a schematic view of the structure of a valve core orifice of the gas valve of the present invention.

Fig. 7 is a schematic structural diagram of the electromagnetic valve of the gas valve.

Fig. 8 is a first schematic view of the bottom structure of the spool cavity.

Fig. 9 is a second schematic structural view of the bottom of the valve core chamber.

Fig. 10 is a third schematic view of the valve core cavity structure.

Fig. 11 is a schematic structural view of a valve element according to embodiment 6 of the present invention.

FIG. 12A is a first schematic view showing the connection relationship between the air guide channel and the air outlet holes of the inner ring and the outer ring in accordance with embodiment 6 of the present invention.

FIG. 12B is a second schematic view showing the communicating relationship between the air guide channel and the air outlet holes of the inner ring and the outer ring in accordance with embodiment 6 of the present invention.

FIG. 12C is a third schematic view showing the communicating relationship between the air guide channel and the air outlet holes of the inner ring and the outer ring in accordance with embodiment 6 of the present invention.

FIG. 13A is a first schematic view showing the communicating relationship between the air guide channel and the air outlet holes of the inner ring and the outer ring in accordance with embodiment 7 of the present invention.

FIG. 13B is a second schematic view showing the communicating relationship between the air guide channel and the air outlet holes of the inner ring and the outer ring in accordance with embodiment 7 of the present invention.

FIG. 14 is a schematic view of the structure of the gas guide channel at the first channel end of example 8 of the present invention.

FIG. 15A is a first schematic view showing the positional relationship between the air guide passage and the air inlet hole in example 8 of the present invention.

Fig. 15B is a schematic view of the air guide channel of embodiment 8 of the present invention showing the positional relationship with respect to the air inlet hole.

Description of the drawings

Valve body 1

Valve core 2

Closure 21

Spool chamber 22

Spool orifice 23

Spring 24

Valve rod 3

Air inlet 31

Intake holes 32

Air intake passage 33

Inner ring air outlet 41

Inner ring air outlet 42

Inner ring channel 43

Outer ring air outlet 51

Outer annular outlet aperture 52

Outer ring channel 53

Air guide channel 6

First channel end 61

Second channel end 62

Solenoid valve 8

Solenoid valve air inlet chamber 81

Microswitch 9

A fork 10.

Detailed Description

The invention is further illustrated by the following examples, which are not intended to limit the scope of the invention.

Example 1

A gas valve shown in this embodiment, as shown in fig. 1-5, includes a valve body 1, a valve core 2, a valve rod 3, a spring 24 and a microswitch 9, the valve body 1 is provided with an air inlet 32 communicated with an air inlet channel 33, an inner ring air outlet 42 communicated with an inner ring channel 43, and an outer ring air outlet 52 communicated with an outer ring channel 53, the air inlet 32 is communicated with an air inlet 31 through the air inlet channel 33, the inner ring air outlet 42 is communicated with an inner ring air outlet 41 through the inner ring channel 43, and the outer ring air outlet 52 is communicated with an outer ring air outlet 51 through the outer ring channel 53;

the air inlet hole 32, the inner ring air outlet hole 42 and the outer ring air outlet hole 52 are positioned at the same longitudinal height on the valve body 1 and are sequentially distributed at intervals; in this embodiment, a side air inlet structure is taken as an example, the longitudinal heights of the upper air inlet 32, the inner ring air outlet 42 and the outer ring air outlet 52 of the valve body 1 can be completely overlapped, and in the conventional flow setting, the flow of the inner ring air outlet is the minimum, so the required area is also the minimum. For ease of flow regulation, it is preferred that the highest or lowest positions of the three orifices overlap. The air guide channel 6 on the same horizontal line is matched with the air inlet hole 32, the inner ring air outlet hole 42 and the outer ring air outlet hole 52 in a coordinated mode, so that the technical effects of good air inlet synchronism, good air connectivity, compact structure and the like can be achieved, and the gas valve is thinner.

As shown in fig. 3-4, in order to make the volume of the whole machine smaller and the use more convenient in the arrangement of the air inlet and outlet pipes, a horizontally extending air guide channel 6 is arranged on the outer peripheral wall of the valve core 2, and the air guide channel 6 is at the same longitudinal height with the air inlet hole 32, the inner ring air outlet hole 42 and the outer ring air outlet hole 52; when the valve core 2 rotates, the air guide channel 6 is selectively communicated with the air inlet hole 32, the inner ring air outlet hole 42 and the outer ring air outlet hole 52 simultaneously. In the present embodiment, the air guide channel 6 is a through groove formed along the outer peripheral wall of the closure 21, but may be a duct or a lateral groove, and the following embodiment is exemplified by the lateral groove.

Specifically, as shown in fig. 4, in the present embodiment, the spool 2 is rotatable relative to the valve body 1 between the initial point and the final point, and the overlap size of the intake holes 32, the inner ring exhaust holes 42, and the outer ring exhaust holes 52 relative to the air guide passage 6 on the spool 2 changes with the rotation of the spool 2 as the spool 2 rotates during the rotation of the spool 2 from the initial point to the final point.

The gas inlet opening into the closure 21 is arranged on the side or below the valve body 1. In the present embodiment, the lower intake or the side intake is realized by introducing the gas inlet into the shutter 21 to the side surface or the lower surface of the valve body 1.

In this embodiment, in order to realize the adjustability of the single inner ring air outlet, the distance between the inner ring air outlet hole 42 and the air inlet hole 32 is smaller than the distance between the inner ring air outlet hole 42 and the outer ring air outlet hole 52. When the air guide channel 6 and the air outlet of the outer ring have no intersecting area, the outer ring has no air, and the overlapping areas of the lateral grooves on the inner ring and the closure 21 are independently adjusted. Specifically, when the inner ring air outlet hole 42 is closer to the air inlet hole 32 (or the electromagnetic valve 8), the lateral groove and the outer ring air outlet hole 52 have no intersecting area at about 140 degrees, the outer ring has no air at the moment, and the overlapping area of the inner ring and the lateral groove is independently adjusted, so that the air outlet of the single inner ring can be adjusted.

In order to realize the compact structure (height and circumference) of the valve body 1, the central lines of the air inlet hole 32, the inner ring air outlet hole 42 and the outer ring air outlet hole 52 are at the same height, and the central line of the inner ring air outlet hole 42 and the central line of the outer ring air outlet hole 52 are distributed at an acute angle with the horizontal line of the air inlet hole 32 by taking the horizontal line of the air inlet hole 32 as a reference.

The central lines of the air inlet holes 32, the inner ring air outlet holes 42 and the outer ring air outlet holes 52 are at the same height, and the central lines of the air inlet holes 32, the inner ring air outlet holes 42 and the outer ring air outlet holes 52 are parallel to each other.

In another embodiment, the total flow rate of the fuel gas can be adjusted by using the overlapping size of the gas outlet holes and the gas guide channel 6, specifically, in this embodiment, the gas guide channel 6 includes a first channel end 61 and a second channel end 62 at two ends, the first channel end 61 is located at the side of the gas inlet hole 32, the second channel end 62 is located at the side of the outer ring gas outlet hole 52, and the two ends of the gas guide channel 6 define specific installation positions, so that the proportion of the fuel gas to be introduced into each fuel gas outlet can be adjusted. The size that utilizes logical groove relative gas entry realizes the gas total flow and adjusts, and the gas lets in the proportion of each gas export this moment, can realize the synchronous fire of wide band (with big or small) for the adjustable range grow of synchronous fire. There are several positional situations:

when the valve element 2 starts to rotate at the initial point, the overlapping area of the air guide passage 6 with respect to the intake port 32 at the first passage end 61 increases with the rotation of the valve element 2. The area of overlap of the air guide channel 6 at the first channel end 61 with respect to the inlet opening 32 increases from 0.

When the spool 2 starts to rotate at the initial point, the second passage end 62 does not overlap the outer ring exit hole 52, and the overlapping area of the air guide passage 6 with respect to the inner ring exit hole 42 and the outer ring exit hole 52 does not change.

When the spool 2 is turned to the end point, the area of overlap of the air conduction passage 6 at the second passage end 62 with respect to the outer annular air outlet hole 52 decreases with rotation of the spool 2. The area of overlap of the air guide passage 6 with respect to the outer annular outlet aperture 52 at the second passage end 62 is reduced to 0.

After the overlapping area of the air guide passage 6 at the second passage end 62 with respect to the outer ring outlet hole 52 is reduced to 0, the overlapping area of the air guide passage 6 at the second passage end 62 with respect to the inner ring outlet hole 42 is reduced with the rotation of the spool 2.

In actual use, air enters the electromagnetic valve 8 from the air inlet, and after the electromagnetic valve 8 is opened, the air enters the lateral groove on the shutter 21 from the air inlet 32, and then enters the inner ring air outlet hole 42 and the outer ring air outlet hole 52 from the lateral groove.

As shown in FIG. 4A, when the valve core 2 rotates 0 degree, the air inlet hole 32 and the lateral groove of the shutter 21 are not intersected, and the air tightness is ensured.

As shown in FIG. 4B, when the valve core 2 rotates 90 degrees, the lateral groove on the shutter 21 rotates 90 degrees counterclockwise, when the valve body 1 rotates 0 degrees to 60 degrees, the intersection between the air inlet hole 32 and the lateral groove begins to reach the maximum intersection area, and the fuel gas enters through the air inlet hole 32 along the direction indicated by the arrow in FIG. 4B and flows out through the inner ring air outlet hole 42 and the outer ring air outlet hole 52 respectively.

As shown in fig. 4C, when the valve core 2 rotates 90 ° to 140 °, the inner and outer rings simultaneously adjust the flow rate through the air inlet 32, that is, when the area of the air inlet exposed out of the slot hole increases, the flow rate also increases, and the broadband synchronous fire, that is, the adjustable synchronous fire range increases, and when the valve core 2 rotates gradually to approach 140 °, the outer ring air outlet 52 is gradually closed by the end 62 of the second channel, the overlapping area of the outer ring air outlet 52 and the slot decreases, and the flow rate decreases; specifically, as shown in fig. 4C, when the valve core 2 rotates to 140 °, the outer ring air outlet 52 is completely closed by the second channel end 62, only the inner ring is conducted, and the inner ring can conveniently realize flow rate adjustment by reducing the overlapping area of the inner ring air outlet 42 and the groove.

As shown in fig. 4D, when the valve core 2 rotates 140 ° to 180 °, the air inlet is completely exposed from the slot hole, and the flow rate is increased by the area change of the slot hole; the air inlet is completely exposed out of the slotted hole, the flow rate is reduced through the change of the area of the slotted hole, as shown in fig. 4D, when the valve core 2 rotates to 180 degrees, the flow rate of the fuel gas entering the inner ring air outlet hole 42 is controlled in a mode that the tail end 62 of the second channel partially seals the inner ring air outlet hole 42, and the purpose that the inner ring fire is gradually reduced when the knob rotates to 180 degrees is achieved. Of course, in other embodiments, the air guide channel 6 may be directly dimensioned to completely close the inner ring exit aperture 42 by the second channel end 62 when turned to 180 °.

Example 2

The present embodiment further provides a gas stove, which has a structure substantially the same as that of the gas stove provided in embodiment 2, except that, in this embodiment, when the valve core 2 is in the interval range of 0 ° to 30 °, the air guide channel 6 on the valve core 2 and the air inlet 32 are not overlapped, and this structure is configured to ensure the airtightness of the valve body 1 relative to the valve core 2 under the condition of being turned off (0 °) by forming a sealing band of about 30 ° in the valve body 1 in consideration of the precision of assembling the valve core 2 relative to the valve body 1.

Specifically, in the embodiment, when the valve core 2 rotates between 0 to 30 degrees, the air inlet hole 32 and the lateral groove of the shutter 21 are not intersected, and the airtight state is kept. As shown in fig. 4E, which is a state diagram of the valve core 2 at 0 °, at this time, the air inlet hole 32 and the lateral groove of the closure 21 have a gap sealing tape of about 30 °, the two are not intersected and do not intake air, when the valve core 2 rotates more than 30 °, the air inlet hole 32 and the lateral groove of the closure 21 begin to be intersected, and the combustion gas enters through the air inlet hole 32 and flows out through the inner ring air outlet hole 42 and the outer ring air outlet hole 52 respectively.

Example 3

As shown in fig. 6 and 10, on the basis of the above embodiment, an independent spool chamber 22 may be further provided, the spool chamber 22 is provided inside the spool 2, and the spool chamber 22 and the shutter 21 are independent from each other. In this embodiment, the flow rate is controlled through the valve core small hole 23, and the valve core small hole 23 is a slotted hole but not a through hole in this embodiment, so that the valve core 2 is free from gas, and the valve has good integral air tightness.

In another embodiment, a spool small hole 23 is provided on the spool cavity 22, and the spool small hole 23 corresponds to the air inlet hole 32, the inner ring air outlet hole 42 and the outer ring air outlet hole 52, respectively. The completely independent channel realizes that the adjustable minimum fire is small enough, and the processing is simple.

Example 4

As shown in fig. 8-10, in this embodiment, on the basis of embodiments 1-3, an electromagnetic valve 8 and a matching fork 10 may be further designed, the electromagnetic valve 8 is disposed in the valve body 1, the fork 10 is mounted at the bottom of the valve body 1, the electromagnetic valve 8 moves relative to the valve body 1 to control the on/off of the air inlet channel 33, an electromagnetic valve air inlet chamber 81 is further mounted at the bottom of the electromagnetic valve 8, the electromagnetic valve air inlet chamber 81 and the valve core chamber 22 of embodiment 2 are completely independent, and are sealed by a rubber member, so that there is no gas at the valve core 2, and meanwhile, gas leakage caused by corrosion and aging of the rubber member is reduced, and no gas is present in the valve core chamber 22, so that the airtightness is more reliable.

Example 5

The embodiment provides a gas stove, which comprises a gas valve according to any one of the embodiments, and achieves the technical effect of ultra-thinness. The thickness of the gas valve determines the thickness of the whole gas stove. Therefore, the ultra-thin valve is a necessary condition for the ultra-thin range. Other constructions and operations of the gas range according to the embodiment of the present invention are known to those skilled in the art and will not be described in detail herein.

Example 6

The present embodiment further provides a gas stove, which has a structure substantially the same as that of the gas stove provided in embodiment 1, except that in this embodiment, the shape of the air guide channel 6 on the valve core 2 at the position of the second channel end 62 is different, specifically as shown in fig. 11, the through groove in this embodiment adjusts the groove width at the end position, thereby adjusting the angle range corresponding to the synchronous fire.

Referring specifically to FIG. 11, at the second channel end 62, the air guide channel 6 extends from a first, wider width H₁Changed to a narrower second width H₂To achieve the flow control of the inner ring outlet holes 42 and the outer ring outlet holes 52 during rotation.

By moving the valve element 2, the control result of the flow control of the inner ring air outlet 42 and the outer ring air outlet 52 by the structure of the second channel end 62 is shown in fig. 12A, 12B and 12C, and as the valve element 2 rotates gradually in the direction of 180 °, the groove structure at the second channel end 62 gradually and sequentially shields the outer ring air outlet 52 (see fig. 12B) and the inner ring air outlet 42 (see fig. 12C), and the purpose of sequentially controlling the gas flow entering the inner ring air outlet 42 and the outer ring air outlet 52 in stages is achieved.

Of course, in other embodiments, the width of the through slot at the second channel end 62 may not be the same as the first width H in the present embodiment₁Directly changed into the second width H₂Instead, a tapering slot width is used to more effectively enable the gas guide channel 6 to effectively control the flow of gas into the inner and outer ring exit holes 42, 52 at the location of the second channel end 62.

Example 7

This embodiment also provides a gas range having a structure substantially the same as that of the gas range provided in embodiment 6, except that in this embodiment, the layout positions of the inner ring outlet holes 42 and the outer ring outlet holes 52 in the height direction are different from those of embodiment 5, specifically, as shown in fig. 13A, in this embodiment, the shape of the gas guide channel 6 is the same as that of embodiment 6 at the position of the second channel end 62, but in this embodiment, the inner ring outlet holes 42 are arranged slightly higher than the outer ring outlet holes 52, so that the overlapping area of the gas guide channel 6 with respect to the inner ring outlet holes 42 and the overlapping area of the gas guide channel 6 with respect to the outer ring outlet holes 52 can be changed simultaneously during the gradual rotation of the valve body 2.

Specifically, as shown in fig. 13A, during the gradual rotation of the valve core 2, the overlapping area of the air guide passage 6 at the second passage end 62 at the outer ring air outlet 52 gradually decreases (i.e., the area W₁) And with the inner ring outlet aperture 42The overlapping area is constant (i.e. the area N)₁)。

As shown in fig. 13B, during the rotation of the valve core 2, the overlapping area of the air guide channel 6 at the second channel end 62 and the inner ring air outlet hole 42 is changed and gradually decreases with the rotation of the valve core 2 (i.e., the area N is smaller)₂) At this time, it can be seen that, because there is a certain hole position difference between the inner ring outlet hole 42 and the outer ring outlet hole 52, the air guide channel 6 can also reduce the overlapping area (i.e., the area W) of the outer ring outlet hole 52 at the second channel end 62₂)。

Namely: through the structural arrangement, the air guide channel 6 can simultaneously realize the adjustment of the overlapping area of the inner ring air outlet hole 42 and the outer ring air outlet hole 52 at the tail end 62 of the second channel, so that the inner ring fire and the outer ring fire can be reduced by different amplitudes under the condition that the angle of the valve core 2 is changed by rotating the knob.

Example 8

The present embodiment also provides a gas range having substantially the same structure as the gas range provided in embodiment 1, except that in the present embodiment, the shape of the gas guide passage 6 at the first passage end 61 is as shown in fig. 14, the groove width of the gas guide passage 6 is stepped, and specifically, at the first passage end 61, the groove width is varied from a wider third width H₃Reduced to a narrower fourth width H₄By the structural arrangement, after the air guide passage 6 is opened gradually with respect to the air intake hole 32 by rotating the valve body 2 (see fig. 15A), by further rotating the valve body 2, the groove width of the air guide passage 6 is gradually reduced to the fourth width H₄Therefore, the overlapping size of the air guide passage 6 with respect to the air intake hole 32 is also gradually reduced. By this arrangement, a wider range of simultaneous fires can be achieved.

Specific examples are as follows: when the valve slide 2 is rotated from 0 °, the gas guide channel 6 at the first channel end 61 gradually begins to overlap the inlet opening 32, the overlapping groove width then being at the third width H₃So that the flow rate of the gas entering the gas guide channel 6 can be gradually increased, and when the valve core 2 rotates to 60 degrees, the air inflow of the gas guide channel 6 and the air inlet hole 32 is in the maximum stateState (overlap area J)₁) Then, as the valve core 2 continues to rotate, the groove width in the air guide passage 6 is at the fourth width H₃Starts to overlap the intake ports 32 (see fig. 15B), so that the overlapping area decreases (overlapping area J)₂)。

As can be seen by comparing fig. 15A and 15B: as the valve body 2 rotates, the area of overlap between the air guide passage 6 and the intake port 32 is reduced (J)₁＞J₁)

Therefore, the flow rate of the gas entering the gas guide passage 6 through the gas inlet hole 32 can be gradually decreased under the restriction of the groove width of the gas guide passage 6, so that the flow rate of the gas entering the gas guide passage 6 through the gas inlet hole 32 and thus branched to the inner ring and the outer ring can be also decreased by rotating the valve body 2.

In this case, the relatively decreased gas flow is still uniformly distributed to the inner ring outlet holes 42 and the outer ring outlet holes 52, and therefore, the structural arrangement can improve the synchronized firing range of the gas valve.

While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that this is by way of example only, and that the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and scope of the invention, and these changes and modifications are within the scope of the invention.

Claims

1. A gas valve comprises a valve body and a valve core, wherein the valve body is provided with an air inlet communicated with an air inlet channel, an inner ring air outlet communicated with an inner ring channel and an outer ring air outlet communicated with an outer ring channel;

2. A gas valve as claimed in claim 1, wherein the overlap size of the inlet holes, the inner ring outlet holes and the outer ring outlet holes with respect to the gas guide passage on the valve core varies with rotation of the valve core.

3. A gas valve as claimed in claim 1, wherein the valve spool is rotatable relative to the valve body between an initial point and a final point.

4. A gas valve as claimed in claim 3, wherein the gas guide passage includes a first passage end and a second passage end at both ends, the first passage end being located at a side of the gas inlet hole, the second passage end being located at a side of the outer ring gas outlet hole.

5. A gas valve as claimed in claim 4, wherein, when the spool starts rotating at the initial point, the area of overlap of the gas guide passage at the first passage end with respect to the gas inlet hole increases with rotation of the spool.

6. A gas valve as claimed in claim 5, wherein the area of overlap of the gas guide passage at the first passage end with respect to the gas inlet aperture increases from 0.

7. A gas valve as claimed in claim 4, wherein when the core begins to rotate at the initial point, the second passage end does not overlap the outer annular outlet aperture, and the area of overlap of the gas guide passage with respect to the inner and outer annular outlet apertures is constant.

8. A gas valve as claimed in claim 4, wherein the area of overlap of the gas guide passage at the second passage end with respect to the outer annular gas outlet bore decreases with rotation of the valve spool as the valve spool is rotated towards the end point.

9. A gas valve as claimed in claim 8, wherein the overlap area of the gas guide passage at the second passage end with respect to the outer annular gas outlet aperture is reduced to 0.

10. A gas valve as claimed in claim 9, wherein the area of overlap of the gas guide passage at the second passage end with respect to the inner ring exit orifice decreases with rotation of the spool after the area of overlap of the gas guide passage at the second passage end with respect to the outer ring exit orifice decreases to 0.

11. A gas valve as claimed in claim 4, wherein the gas guide passage is a through slot formed along the peripheral wall of the valve core.

12. A gas valve as claimed in claim 11, wherein the through slot has a gradually increasing slot width in an up-down direction towards the end of the second channel.

13. A gas valve as claimed in claim 12, wherein the gas guide passage terminates at the second passage in a wider first width H₁Changed to a narrower second width H₂。

14. A gas valve as claimed in claim 1, wherein a gas inlet to the obturator is provided in the side or underside of the valve body.

15. A gas valve as claimed in claim 1, wherein the inner ring outlet aperture is spaced from the inlet aperture by a distance less than the distance separating the inner ring outlet aperture from the outer ring outlet aperture.

16. A gas valve as claimed in claim 1, wherein the gas inlet hole, the inner ring gas outlet hole and the outer ring gas outlet hole have their center lines at the same height, and the center lines of the inner ring gas outlet hole and the outer ring gas outlet hole are arranged at acute angles to the horizontal line of the gas inlet hole, based on the horizontal line of the gas inlet hole.

17. A gas valve as claimed in claim 1, wherein the gas inlet hole, the inner ring gas outlet hole and the outer ring gas outlet hole have their center lines at the same height, and the center lines of the gas inlet hole, the inner ring gas outlet hole and the outer ring gas outlet hole are parallel to each other.

18. A gas valve as claimed in claim 1, wherein the inner ring outlet aperture is disposed relatively higher than the outer ring outlet aperture.

19. A gas valve as claimed in claim 1, further comprising a spool chamber, wherein the spool chamber is disposed within the spool, and the spool chamber and the closure are independent of each other.

20. A gas valve as claimed in claim 19, wherein the spool cavity is further provided with a spool aperture, and the spool aperture corresponds to the inlet aperture, the inner ring outlet aperture and the outer ring outlet aperture, respectively.

21. A gas valve as claimed in claim 1, further comprising an electromagnetic valve disposed in the valve body, the electromagnetic valve being movable relative to the valve body to control the opening and closing of the inlet passage.

22. A gas burner characterized by comprising a gas valve according to any one of claims 1-21.