WO2017156650A1 - 可实现外环火和内环火同步变化的燃气阀 - Google Patents

可实现外环火和内环火同步变化的燃气阀 Download PDF

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Publication number
WO2017156650A1
WO2017156650A1 PCT/CN2016/000566 CN2016000566W WO2017156650A1 WO 2017156650 A1 WO2017156650 A1 WO 2017156650A1 CN 2016000566 W CN2016000566 W CN 2016000566W WO 2017156650 A1 WO2017156650 A1 WO 2017156650A1
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WO
WIPO (PCT)
Prior art keywords
inner ring
passage
ring fire
hole
outer ring
Prior art date
Application number
PCT/CN2016/000566
Other languages
English (en)
French (fr)
Inventor
李雪波
Original Assignee
李雪波
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN201610147204.7A external-priority patent/CN105715818B/zh
Priority claimed from CN201610634127.8A external-priority patent/CN106015648B/zh
Application filed by 李雪波 filed Critical 李雪波
Publication of WO2017156650A1 publication Critical patent/WO2017156650A1/zh

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
    • F16K5/02—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having conical surfaces; Packings therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/06—Construction of housing; Use of materials therefor of taps or cocks
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
    • F16K5/08—Details
    • F16K5/10—Means for additional adjustment of the rate of flow

Definitions

  • the invention relates to a gas valve for a gas cooker, in particular to a gas valve capable of realizing synchronous changes of an outer ring fire and an inner ring fire.
  • the gas valve in various gas cookers is a manually operated valve that controls the supply of the gas source.
  • the domestic gas cooker generally has an inner ring fire and an outer ring fire.
  • the ordinary two-channel gas valve generally includes a valve body having an intake passage, an inner ring nozzle outlet passage and an outer ring nozzle outlet passage, and a valve capable of rotating in the valve body.
  • the upper part of the valve core has a spring cavity
  • the lower part of the valve core is provided with a venting cavity
  • the valve body is provided with a valve stem which can drive the rotation of the valve core, and the lower end of the valve stem is held to keep the valve stem up and disengaged from the valve core a spring connected to the spring
  • the spring is located in the spring cavity on the valve core
  • the outer side of the venting cavity side of the valve core is provided with a series of outer ring fire holes of different sizes for connecting the air inlet passage and the outer ring nozzle air outlet passage, and An arcuate inner ring fire hole connecting the intake passage and the inner ring nozzle outlet passage.
  • the inner ring nozzle outlet passage of the valve body and the outer ring nozzle outlet passage end are connected with the nozzle, and the inner ring nozzle outlet passage finally communicates with the inner ring portion of the cooker, and the outer ring nozzle outlet passage finally ends with the cooker
  • the ring is connected, and the user can operate the valve stem through a knob provided on the operation panel.
  • the knob is first pressed and rotated counterclockwise to drive the valve core to rotate counterclockwise, so that the large fire hole and the curved notch on the valve core
  • Both are connected to the intake passage in the valve body, and the air source is divided into two independent channels after entering from the intake passage, one passage is connected to the outer ring nozzle outlet passage via the ventilation chamber and the outer ring fire hole, and the other passage is through the ventilation chamber and the inner ring.
  • the fire hole is in communication with the inner ring nozzle outlet passage.
  • the large fire hole on the peripheral wall of the valve core and the small fire hole are circumferentially spaced apart, and the distance between the intervals is related to the angle at which the knob can rotate during the adjustment of the fire level, which is due to the large fire hole and the small fire.
  • the holes are circumferentially spaced, and the spool rotates clockwise or counterclockwise, from a large fire to a small fire, or from a small fire to a large fire.
  • the neutral position is a large fire hole and a small fire hole.
  • the peripheral wall of the spool is due to the design flaws of the existing spool.
  • the flow rate does not change linearly, especially in the excessive stage from the large fire to the small fire, the flow change is not linear, the ratio is decreased, and there may be an imbalance, nonlinear feature.
  • the actual user's feeling is that the change in firepower suddenly becomes larger during the fire switching process, or does not change, and suddenly becomes smaller when it is small.
  • the technical problem to be solved by the present invention is to provide a gas valve capable of realizing the synchronous change of the outer ring fire and the inner ring fire in response to the above-mentioned state of the art, and the gas valve can achieve the purpose of synchronous adjustment of the outer ring fire and the inner ring fire. At the same time, ensure that the inner ring fire is still burning when the outer ring fire is closed.
  • the first technical solution adopted by the present invention to solve the above technical problem is: a gas valve capable of realizing synchronous changes of outer ring fire and inner ring fire, including internal air inlet passage, outer ring nozzle air outlet passage and inner ring nozzle air outlet
  • the valve body of the passage is provided with a rotatable valve core, and the lower part of the valve core is provided with an opening downwardly facing the ventilation chamber, and the outer side of the ventilation chamber is provided with an outer ring fire hole through which the rotary gas output of the valve core can be changed;
  • the utility model is characterized in that: the outer peripheral wall of the valve core is provided with an arc-shaped inner ring fire groove blocked by the venting cavity, the inner ring fire groove is communicated with the inner ring nozzle air outlet passage, and the valve body is provided with a transition air passage and
  • the auxiliary air passage and the transition air passage are divided into two paths, one for connecting the outer ring fire hole and the outer ring nozzle air outlet passage, and the other for connecting the outer ring fire
  • the outer ring fire hole comprises a large fire hole directly communicating with the venting chamber, and an air guiding groove disposed on the outer peripheral wall of the valve core and having an arc shape, and the opening portion of the starting end of the air guiding groove is in communication with the large fire hole.
  • the air guiding groove is gradually inclined upward along the outer peripheral wall of the valve body.
  • the air guiding groove is arranged in such a way that the coincidence degree of the valve core in the rotating air guiding groove and the intake passage gradually increases or decreases, and the change of the gas volume gradually changes slowly, ensuring that the adjustment of the gas valve is more stable and reasonable.
  • the outer ring fire hole includes a plurality of fire hole portions which are circumferentially spaced and have different hole sizes. It is a conventional outer ring fire hole setting method.
  • the auxiliary air passage is disposed above the air outlet passage of the inner ring nozzle, and the auxiliary air passage and the inner ring nozzle air outlet passage are communicated through the valve port, and the auxiliary air passage is vertically provided with an adjusting screw and an adjusting screw
  • the lower end of the lower end has a tapered surface that cooperates with the valve port.
  • the adjusting screw is provided with a fine hole passage, the outlet end of the fine hole passage penetrates the bottom surface of the adjusting screw, and the inlet end of the fine hole passage penetrates the peripheral wall of the adjusting screw.
  • the second technical solution adopted by the present invention to solve the above technical problem is: a gas valve capable of realizing synchronous changes of the outer ring fire and the inner ring fire, including an inner intake passage, an outer ring nozzle outlet passage, and an inner ring nozzle outlet;
  • the valve body of the passage is provided with a rotatable valve core, and the lower part of the valve core is provided with an opening downwardly facing the ventilation chamber, and the outer side of the ventilation chamber is provided with an outer ring fire hole through which the rotary gas output of the valve core can be changed;
  • the utility model is characterized in that: the outer peripheral wall of the valve core is provided with an arc-shaped inner ring fire groove blocked by the ventilating cavity, and an inner ring small hole and a valve core hole communicating with the venting cavity, and the inner ring small hole is located outside Between the ring fire hole and the inner ring fire groove, the small hole of the valve core is disposed outside the inner ring fire groove, the inner ring fire groove, the inner ring small hole and the valve
  • the transition air passage is divided into two paths, one for connecting the outer ring fire hole and the outer ring nozzle air outlet passage, and the other for connecting the outer ring fire hole and the inner ring.
  • a fire groove the auxiliary air passage is in communication with the inner ring nozzle outlet passage;
  • the spool is at In the initial state, the outer ring fire hole is blocked with the transition air channel and the auxiliary air channel at the same time, and the small hole of the valve core and the small hole of the inner ring are blocked with the air outlet passage of the inner ring nozzle; when the valve core is rotated from the original state to the first angle
  • the outer ring fire hole is simultaneously blocked with the transition air channel and the auxiliary air channel, and the small hole of the valve core is directly connected with the air outlet passage of the inner ring nozzle; in the process of rotating the valve core from the first angle to the second angle, the outer ring fire can be made
  • the overlapping area of the hole and the transitional air passage is changed to change the outflow amount of the outer
  • the outer ring fire hole communicates with the auxiliary air channel
  • the inner ring small hole communicates with the inner ring nozzle air outlet channel
  • the valve core rotates from the second angle to the third angle
  • the outer ring fire hole Still with the transitional airway blockage, the overlapping area of the inner ring small channel and the inner ring nozzle outlet channel changes to realize the change of the outflow volume of the inner ring nozzle outlet passage.
  • the overlapping area of the outer ring fire hole and the transition air passage can be changed to change the outflow amount of the outer ring fire hole, and the inner ring fire groove and the inner ring
  • the outlet passage of the ring nozzle is always in communication; when the spool is rotated to the second angle, the outer ring fire hole and the transition air passage are blocked, and the outer ring fire hole is in communication with the auxiliary air passage, and the inner ring small hole and the inner ring nozzle are exhausted.
  • the gas passages change the intake mode of the conventional gas valve, and the gas is first distributed through the outer ring fire hole which can be changed by the rotation of the valve core, and is respectively distributed to the outer ring nozzle outlet passage and the inner ring nozzle outlet gas.
  • Channel so as long as the gas volume through the outer ring fire hole changes, the outflow volume of the outer ring nozzle outlet passage and the inner ring nozzle outlet passage will change synchronously, and finally realize the synchronous change of the outer ring fire and the inner ring fire, and the gas cooker using the valve It is especially suitable for small fire omelette or cake, and in the minimum fire state, the gas is connected to the inner ring nozzle outlet passage through the outer ring fire hole and the auxiliary air passage to ensure that the small fire does not extinguish.
  • the outer ring fire hole is still blocked with the transition air passage, and the inner ring nozzle is realized by the overlapping area of the inner ring small hole and the inner ring nozzle outlet passage.
  • the outflow volume of the outlet passage changes, and the inner ring flame can be changed from a small fire to a large fire when the outer ring fire is closed, and then the fire is ignited by a large fire, and the adjustment of the inner ring flame is more conducive to soup.
  • the air guiding groove is a spiral step groove. During the rotation of the valve core, as the angle changes, the flow change of the valve body through different positions of the air guiding groove is more obvious, and the flame change is more obvious.
  • valve core and the valve body mating surface must be added with oil to ensure that the two are not easily damaged during the rotation process, and the lubricating effect is obtained, the original valve core is easy to run into the spiral groove during the rotation. Blockage affects the flow of the valve body, and excessive blockage will result in no flow. Therefore, the outer peripheral wall of the valve core is provided with an oil damper at a position adjacent to the air guiding groove. The function of the oil damper is that during the rotation process, the oil will run into its tank, preventing the oil from running in the spiral groove again, preventing the blockage from affecting the flow of the valve body.
  • the large fire hole is an elliptical hole whose longitudinal direction is parallel to the axial direction of the valve body. In this way, the rotation of the valve core can make the change of the overlapping area of the two more obvious, and the flame change is more obvious.
  • the cross-sectional shape of the inlet of the inner ring nozzle outlet passage on the valve body is fan-shaped.
  • the rotation of the valve core can make the change of the overlapping area of the two more obvious, and the flame change of the inner ring is more obvious.
  • the present invention has the advantages that the gas valve changes the intake mode of the conventional gas valve, and the gas is first distributed through the outer ring fire hole that can be changed by the rotation of the valve core, and is respectively distributed to the gas.
  • the outer ring nozzle outlet passage and the inner ring nozzle outlet passage so as long as the gas volume through the outer ring fire hole changes, the outflow amount of the outer ring nozzle outlet passage and the inner ring nozzle outlet passage will change synchronously, and finally the outer ring fire and the inner ring are realized.
  • the fire is synchronously changed, and the gas cooker using the valve is particularly suitable for small fire omelet or cake, and in the minimum fire state, the gas is connected to the inner ring nozzle outlet passage through the outer ring fire hole and the auxiliary air passage to ensure a small fire.
  • the gas cooker using the valve is particularly suitable for small fire omelet or cake, and in the minimum fire state, the gas is connected to the inner ring nozzle outlet passage through the outer ring fire hole and the auxiliary air passage to ensure a small fire.
  • FIG. 1 is a first perspective view of a first embodiment of the present invention
  • FIG. 2 is a second perspective view of a first embodiment of the present invention
  • Figure 3 is a step sectional view of the first embodiment of the present invention (the valve core is in an original state);
  • Figure 4 is a cross-sectional view of the first embodiment of the first ring nozzle air outlet passage (the spool is in the original state);
  • Figure 5 is a cross-sectional view of the axial direction of the transition air passage according to the first embodiment of the present invention (the valve core is in a large fire state);
  • Figure 6 is a cross-sectional view of the first embodiment of the first ring nozzle air outlet passage in the axial direction (the spool is in a large fire state);
  • Figure 7 is a cross-sectional view of the axial direction of the transition air passage according to the first embodiment of the present invention (the spool is in the middle of the tempering state);
  • Figure 8 is a cross-sectional view of the inner ring nozzle outlet passage in the axial direction of the embodiment of the present invention (the spool is in the middle of the tempering state);
  • Figure 9 is a cross-sectional view of the axial direction of the transition air passage according to the first embodiment of the present invention (the spool is in a minimum fire state);
  • Figure 10 is a cross-sectional view of the first embodiment of the air outlet passage along the axial direction of the nozzle (the spool is in a minimum fire state);
  • Figure 11 is a perspective view of a three-dimensional structure of a valve core according to a first embodiment of the present invention.
  • FIG. 12 is a second schematic structural view of a valve body according to a first embodiment of the present invention.
  • Figure 13 is a step sectional view of the second embodiment of the present invention (the valve core is in an original state);
  • Figure 14 is a cross-sectional view of the second embodiment along the axial direction of the inner ring nozzle outlet passage (the spool is in the original state);
  • Figure 15 is a cross-sectional view of the second ring nozzle outlet passage in the axial direction of the second embodiment of the present invention (the spool is rotated to the first angular state);
  • Figure 16 is a cross-sectional view showing the axial direction of the transition air passage according to the second embodiment of the present invention (the spool is in a large fire state, and the spool is rotated between the first angle and the second angle);
  • Figure 17 is a cross-sectional view showing the axial direction of the inner ring nozzle outlet passage according to the second embodiment of the present invention (the spool is in a large fire state, and the spool is rotated between the first angle and the second angle);
  • Figure 18 is a cross-sectional view of the axial direction of the transition air passage according to the second embodiment of the present invention (the valve core is in the middle of the tempering state, and the valve core is rotated between the first angle and the second angle);
  • Figure 19 is a cross-sectional view showing the axial direction of the inner ring nozzle outlet passage according to the second embodiment of the present invention (the spool is in the middle of the tempering, the spool is rotated to between the first angle and the second angle);
  • Figure 20 is a cross-sectional view of the axial direction of the transition air passage according to the second embodiment of the present invention (the spool is rotated to the second angle state);
  • Figure 21 is a cross-sectional view (in the axial direction of the valve core to the second angle state) along the axial direction of the inner ring nozzle outlet passage according to the second embodiment of the present invention
  • FIG. 22 is a schematic diagram showing the principle of changing the overlapping area of the inner ring small hole and the inner ring nozzle air outlet 13 in the second embodiment of the present invention (the valve core is rotated from the second angle to the third angle).
  • FIG. 23 is a first perspective view of a three-dimensional structure of a valve core according to a second embodiment of the present invention.
  • Figure 24 is a second perspective view of the valve body of the second embodiment of the present invention.
  • 1 to 12 show a first embodiment of the present invention.
  • a gas valve capable of synchronously changing an outer ring fire and an inner ring fire comprising a valve body 1 having an intake passage 11, an outer ring nozzle outlet passage 12 and an inner ring nozzle outlet passage 13 therein, the valve body 1 being composed of a valve seat and The bottom cover is composed.
  • the cross-sectional view in the drawing hides the bottom cover, and the bottom cover is not cut, as shown in Figures 3-10.
  • the valve body 1 is provided with a rotatable valve core 2, and a lower portion of the valve core 2 is provided with an opening downwardly facing the venting chamber 4, the valve core 2 is driven to rotate by the valve stem 7, and the connecting structure between the valve core 2 and the valve stem 7
  • the prior art the prior art.
  • the outer side of the ventilating chamber 4 is provided with an outer ring fire hole 3 which can be changed by the rotation of the valve core 2; the principle of the change of the outflow amount of the outer ring fire hole 3 is the same as that of the existing gas valve, and the outer ring fire hole 3 and the transition gas The overlap area of the track 14 is changed to change the outflow amount of the outer ring fire hole 3.
  • the outer ring fire hole 3 includes a large fire hole 31 directly communicating with the venting chamber 4, and an air guiding groove 32 which is disposed on the outer peripheral wall of the valve body 2 and has an arc shape, and the opening portion of the initial end of the air guiding groove 32 321 is in communication with the large fire hole 31.
  • Guide The air groove 32 is gradually inclined upward along the outer peripheral wall of the spool 2.
  • the ventilation amount is the largest, and during the adjustment process, the outer ring fire hole 3 is realized by the change of the overlapping area of the air guide groove 32 and the following transition air passage 14
  • the outer peripheral wall of the valve body 2 is provided with an arcuate inner annular fire groove 5 blocked from the venting chamber 4, the inner ring fire groove 5 communicates with the inner ring nozzle air outlet passage 13, and the valve body 1 is internally provided with a transition gas.
  • the passage 14 and the auxiliary air passage 15, the transition air passage 14 is divided into two paths, one for connecting the outer ring fire hole 3 and the outer ring nozzle air outlet passage 12, and the other for connecting the outer ring fire hole 3 and the inner ring fire groove 5, the auxiliary air passage 15 is in communication with the inner ring nozzle outlet passage 13; when the spool 2 is in the original state, the outer ring fire hole 3 is simultaneously blocked with the transition air passage 14 and the auxiliary air passage 15; the valve core 2 is rotated to adjust the fire During the process, the overlapping area of the outer ring fire hole 3 and the transition air channel 14 can be changed to change the outflow amount of the outer ring fire hole 3, and the inner ring fire groove 5 and the inner ring nozzle air outlet channel 13 are
  • the auxiliary air passage 15 is disposed above the inner ring nozzle air outlet passage 13, and the auxiliary air passage 15 and the inner ring nozzle air outlet passage 13 communicate with each other through the valve port 16, and the side wall of the auxiliary air passage 15 is vertically provided with an adjusting screw 6
  • the outer periphery of the lower end of the adjusting screw 6 has a tapered surface 61 that engages with the valve port 16.
  • a fine hole passage 62 is provided in the adjusting screw 6, and an outlet end of the fine hole passage 62 penetrates the bottom surface of the adjusting screw 6, and an inlet end of the fine hole passage 62 penetrates the peripheral wall of the adjusting screw 6.
  • Ignition state moving down and rotating the valve core, the large fire hole 31 in the outer ring fire hole 3 and the transition air passage 14 are directly connected to each other, the maximum amount of ventilation, as shown in Figures 5 and 6, the gas through the intake passage 11.
  • the venting chamber 4 of the valve core, the large fire hole 31 and the transition air passage 14 are divided into two paths, one way leading to the outer ring nozzle outlet passage 12, and the other passage leading to the inner ring nozzle outlet passage 13 via the inner ring fire groove 5 .
  • Adjusting the fire process adjusting the small fire, driving the valve core 2 to rotate, so that the large fire hole 31 in the outer ring fire hole 3 and the inlet end of the transition air passage 14 are gradually displaced, and the rotation continues, and the air guide groove 32 gradually merges with the transition air passage 14
  • the inlet end is recombined and gradually displaced, so that the amount of gas entering the transition air passage 14 through the outer ring fire hole 3 is gradually reduced, that is, the gas volume distributed to the outer ring nozzle outlet passage 12 and the inner ring nozzle outlet passage 13 through the transition air passage 14 is synchronized. Gradually reduce, and finally achieve the purpose of the outer ring fire and the inner ring fire simultaneously reduce the fire.
  • the process of adjusting the fire is just the opposite.
  • the outer ring fire hole 3 and the transition air passage 14 are blocked, and the outer ring fire hole 3 is in communication with the auxiliary air passage 15, the gas is from the intake passage 11, the venting chamber 4 of the valve core, the large fire hole 31 and After the auxiliary air passage 15, the air passage 13 to the inner ring nozzle is opened, and only the inner ring fire is burning to ensure that the small fire does not extinguish.
  • a gas valve capable of synchronously changing an outer ring fire and an inner ring fire comprising a valve body 1 having an intake passage 11, an outer ring nozzle outlet passage 12 and an inner ring nozzle outlet passage 13 therein, and an inner ring nozzle outlet passage 13
  • the cross-sectional shape of the inlet is fan-shaped.
  • the valve body 1 is composed of a valve seat and a bottom cover.
  • the valve body 1 is provided with a rotatable valve core 2, and a lower portion of the valve core 2 is provided with an opening downwardly facing the ventilation chamber 4, and the valve core 2 is driven to rotate by the valve rod 9, the valve
  • the connection structure between the core 2 and the valve stem 9 is prior art.
  • the lower portion of the valve core 2 is provided with an opening downwardly facing the venting chamber 4, and the outer side of the venting chamber 4 is provided with an outer ring fire hole 3 through which the swirling air volume of the valve body 2 can be changed;
  • the outer ring fire hole 3 includes a large fire hole 31 directly communicating with the venting chamber 4, and an air guiding groove 32 provided on the outer peripheral wall of the valve body 2 and having an arc shape.
  • the opening portion 32 at the starting end of the air guiding groove 32 communicates with the large fire hole 31.
  • the bottom surface of the air guiding groove 32 has a stepped shape, and the stepped direction gradually increases from the large fire hole 31 toward the end of the air guiding groove 32.
  • the large fire hole 31 is an elliptical hole whose longitudinal direction is parallel to the axial direction of the spool.
  • the outer peripheral wall of the valve body 2 is provided with an arcuate inner ring fire groove 5 blocked from the venting chamber 4, and an inner ring small hole 7 and a spool small hole 8 communicating with the venting chamber 4, and the inner ring is small.
  • the tunnel 7 is located between the outer ring fire hole 3 and the inner ring fire groove 5, and the spool small holes 8 are spaced apart from the outer ring fire groove 5.
  • the outer side of the ventilating chamber 4 is provided with an outer ring fire hole 3 which can be changed by the rotation of the valve core 2; the principle of the change of the outflow amount of the outer ring fire hole 3 is the same as that of the existing gas valve, and the outer ring fire hole 3 and the transition gas The overlap area of the track 14 is changed to change the outflow amount of the outer ring fire hole 3.
  • the outer ring fire hole 3 includes a large fire hole 31 directly communicating with the venting chamber 4, and an air guiding groove 32 which is disposed on the outer peripheral wall of the valve body 2 and has an arc shape, and the opening portion of the initial end of the air guiding groove 32 321 is in communication with the large fire hole 31.
  • the air guide groove 32 is gradually inclined upward along the outer peripheral wall of the valve body 2.
  • the ventilation amount is the largest, and during the adjustment process, the outer ring fire hole 3 is realized by the change of the overlapping area of the air guide groove 32 and the following transition air passage 14
  • An oil damper 10 is disposed at an outer peripheral wall of the valve body 2 adjacent to the air guiding groove 32.
  • the outer peripheral wall of the valve body 2 is provided with an arcuate inner ring fire groove 5 blocked from the venting chamber 4, and an inner ring small hole 7 and a spool small hole 8 communicating with the venting chamber 4, and the inner ring is small.
  • the hole 7 is located between the outer ring fire hole 3 and the inner ring fire groove 5, and the valve core small hole 8 is located outside the inner ring fire groove 5; the inner ring fire groove 5, the inner ring small hole 7 and the small spool
  • the hole 8 is connected to the inner ring nozzle air outlet passage 13.
  • the valve body 1 is internally provided with a transition air passage 14 and an auxiliary air passage 15, and the transition air passage 14 is divided into two paths, one way for connecting the outer ring fire hole 3 and the outer ring.
  • the nozzle outlet passage 12 is connected to the outer ring fire hole 3 and the inner ring fire groove 5, and the auxiliary air passage 15 communicates with the inner ring nozzle outlet passage 13.
  • the second angle is 190°.
  • the overlapping area of the outer ring fire hole 3 and the transition air channel 14 can be changed to change the outflow amount of the outer ring fire hole 3, and the inner ring fire groove 5 and the inner ring nozzle air outlet channel 13 are always in communication.
  • the third angle is 230°.
  • the outer ring fire hole 3 is still blocked with the transition air passage 14, and the overlapping area of the inner ring small hole 7 and the inner ring nozzle air outlet passage 13 is changed to change the outflow amount of the inner ring nozzle outlet passage 13.
  • the auxiliary air passage 15 setting and adjusting screw 6 are the same as in the first embodiment.
  • the rotating spool 2 When the rotating spool 2 is rotated from the original state to the first angle during ignition, the outer ring fire hole 3 is still blocked with the transition air passage 14 and the auxiliary air passage 15 at the same time. At this time, the spool small hole 8 is directly connected to the inner ring nozzle first. The outlet passage 13 is connected. This ensures that at the beginning of the ignition, the inner ring produces a flame before the outer ring. Similarly, when there is a flame in the inner and outer rings, when the spool 2 rotates in the direction of the fire, the outer ring fire is extinguished before the inner ring fire, which is Ensure the safety of the use of gas cookers.
  • the overlapping area of the outer ring fire hole 3 and the transition air passage 14 can be changed to change the air outlet amount of the outer ring fire hole 3, and the inner ring fire groove 5 is always in communication with the inner ring nozzle outlet passage 13; when the spool 2 is rotated to the second angle, the outer ring fire hole and the transition air passage 14 are blocked, and the outer ring fire hole 3 is connected to the auxiliary air passage, and the inner ring is small
  • the gas passage 7 communicates with the inner ring nozzle outlet passage 14; the gas valve changes the intake mode of the conventional gas valve, and the gas is first distributed through the outer ring fire hole whose rotation air volume can be changed, and then distributed to the outside.
  • the ring nozzle air outlet passage 12 and the inner ring nozzle air outlet passage 13 are provided, so that the air volume of the outer ring nozzle air outlet passage 12 and the inner ring nozzle air outlet passage 13 will change synchronously as long as the air volume passing through the outer ring fire hole 3 changes, and finally the outer ring is realized.
  • the fire and the inner ring fire change synchronously.
  • the gas cooker using the valve is particularly suitable for small fire omelette or cake, and in the minimum fire state, the gas is connected to the inner ring nozzle outlet passage via the outer ring fire hole and the auxiliary air passage. Make sure the fire is not extinguished.
  • the outer ring fire hole 3 is still blocked with the transition air passage 14, and the overlapping area of the inner ring small passage 7 and the inner ring nozzle outlet passage 14 is changed.
  • the outflow volume of the inner ring nozzle outlet passage 14 changes, and the inner ring flame can be changed from a small fire to a large fire in the outer ring fire closed state, and then the fire is ignited by a large fire, and the inner ring flame is more favorable for the soup.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Taps Or Cocks (AREA)
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Abstract

一种可实现外环火和内环火同步变化的燃气阀，包括阀体（1）和阀芯（2），其中，阀芯（2）下部设有通气腔（4），通气腔（4）侧壁上开有外环火孔（3），阀芯（2）的外周壁上设有内环火凹槽（5），内环火凹槽（5）与内环喷嘴气通道（13）相通，阀体（1）内部设有过渡气道（14）和辅助气道（15），过渡气道（14）分为两路，一路连通外环火孔（3）与外环喷嘴出气通道（12），另一路连通外环火孔（3）与内环火凹槽（5），辅助气道（15）与内环喷嘴出气通道（13）连通。该燃气阀燃气先经由通过阀芯旋转而调节出气量大小的外环火孔后再进行分配，因而只要通过外环火孔的气量发生变化，外环喷嘴出气通道和内环喷嘴出气通道的出气量将同步变化。

Description

可实现外环火和内环火同步变化的燃气阀 技术领域
本发明涉及一种用于燃气灶具的燃气阀，尤其涉及一种可实现外环火和内环火同步变化的燃气阀。
背景技术
各种燃气灶具中的燃气阀，是控制气源供应的手动操作阀。家用燃气灶具一般具有内环火和外环火，普通的双通道燃气阀一般包括内部具有进气通道、内环喷嘴出气通道和外环喷嘴出气通道的阀体，阀体内设有能旋转的阀芯，阀芯上部具有弹簧腔，阀芯下部设有通气腔，阀体上穿设有能带动阀芯旋转的阀杆，阀杆的下端顶持有使阀杆保持上移并脱离与阀芯连接趋势的弹簧，该弹簧位于阀芯上的弹簧腔内，阀芯的通气腔侧壁上开有用以连通进气通道和外环喷嘴出气通道的大小不一的系列外环火孔，以及用以连通进气通道和内环喷嘴出气通道的呈弧形的内环火孔。
使用时，阀体的内环喷嘴出气通道和外环喷嘴出气通道端部与喷嘴连接使用，内环喷嘴出气通道最终与灶具中的内环部相通，外环喷嘴出气通道最终与灶具中的外环部相通，使用者可通过设置在操作面板上的旋钮而操作阀杆，一般先按压旋钮并逆时针转动，即可带动阀芯逆时针转动，使阀芯上的大火孔以及弧形槽口均与阀体内的进气通道相连通，气源从进气通道进入后分成独立的两路，一路经由通气腔、外环火孔与外环喷嘴出气通道连通，另一路经由通气腔、内环火孔与内环喷嘴出气通道连通。调节火势时，只需转动旋钮，带动阀芯旋转，利用不同孔径的系列外环火孔与外环喷嘴出气通道相通实现外环火的火势调节，并在外环火调节为零的状态下，内环火依旧保持出火。在阀芯转动过程中，因内环火孔的孔径大小始终不变，也就是在内环火的火势不能进行调节。这种方式的燃气灶，在用小火进行煎蛋或者摊饼的时候，因只有外环火火势变小，内环火的火力依旧较大，这会使得煎蛋或煎饼的中间部分易焦，影响食品的品质。
现有这种燃气阀，其阀芯周壁上的大火孔与小火孔沿圆周间隔设置，间隔的距离与旋钮在调节火势大小过程中所能旋转的角度大小相关，正因大火孔与小火孔沿圆周间隔设置，阀芯无论是顺时针还是逆时针旋转，从大火调节至小火，或从小火调节至大火均有一个空档位置，该空档位置即为大火孔与小火孔之间的阀芯周壁，因为现有阀芯的设计缺陷。现有技术在阀芯转动过程中，流量出来时不是呈线性变化的，特别是在大火到小火的过度阶段，流量变化不是呈线性、比列下降的，有可能呈现不均衡，非线性的特征。实际用户的感觉是使用时火力大小变化在大小火切换过程中突然变大，或者没有变化，到小火时又突然变小。在大小火调节过程中存在调节不稳定，易熄火的缺陷，给实 际使用带来许多不便。因而，现有的燃气旋塞阀有待于进一步改进。
如何实现外环火和内环火同步调节以及在调节火势过程中火势呈线性变化是本领域技术人员所迫切需要解决的技术问题。
发明内容
本发明所要解决的技术问题是针对上述现有技术现状而提供一种可实现外环火和内环火同步变化的燃气阀，该燃气阀能实现外环火和内环火同步调节的目的，同时确保在外环火关闭状态下，内环火依旧燃烧。
本发明解决上述技术问题所采用的第一个技术方案为；一种可实现外环火和内环火同步变化的燃气阀，包括内部具有进气通道、外环喷嘴出气通道和内环喷嘴出气通道的阀体，阀体内设有能旋转的阀芯，阀芯下部设有开口朝下通气腔，通气腔侧壁上开有通过阀芯的旋转出气量可变化的外环火孔；其特征在于：所述阀芯的外周壁上设有与通气腔阻断的呈弧形的内环火凹槽，内环火凹槽与内环喷嘴出气通道相通，阀体内部设有过渡气道和辅助气道，过渡气道分为两路，一路用以连通外环火孔与外环喷嘴出气通道，另一路用以连通外环火孔与内环火凹槽，辅助气道与内环喷嘴出气通道连通；在阀芯处于原始状态下，外环火孔同时与过渡气道和辅助气道阻断；在阀芯旋转调节火势过程中能使外环火孔与过渡气道的重叠面积发生变化实现外环火孔出气量发生变化，同时内环火凹槽与内环喷嘴出气通道始终相通；在阀芯旋转至最小火状态，外环火孔与过渡气道阻断，同时外环火孔与辅助气道相通。
进一步改进，上述外环火孔包括直接与通气腔连通的大火孔，及设置在阀芯外周壁上并呈弧状的导气槽，该导气槽起始端的开口部与大火孔连通。这样当阀芯在调节气量的旋转过程中，导气槽始终通过大火孔与通气腔连通，整个过程中没有空档，阀芯旋转过程中，通过导气槽与过渡气道重合程度实现气量的调节，采用弧形状的导气槽，使得当阀芯在调节气量的旋转过程中流量变化(从大火到小火的过程)是呈线性变化的(看起来是一条直线)，因此大小火调节过程中调节稳定，不易熄火。
优选的，上述导气槽沿阀芯的外周壁逐渐向上倾斜设置。该导气槽设置方式，使当阀芯在旋转导气槽与进气通道的重合度呈逐渐增加或减少的趋势，气量的变化呈逐渐缓慢变化的趋势，确保燃气阀的调节更平稳合理。
作为另一种旋转，上述外环火孔包括多个沿圆周间隔设置且孔径大小不一的火孔部。其为常规外环火孔设置方式。
进一步改进，上述辅助气道设置在内环喷嘴出气通道的上方，辅助气道和内环喷嘴出气通道之间通过阀口连通，辅助气道的侧壁上竖向穿设有调节螺钉，调节螺钉的下端外周具有与阀口配合的锥形面。该设计使得在最小火状态下的内环火大小可调节，调节时转动调节螺钉，通过锥形面与阀口之间的间距的改变，实现内环火大小的调节。
更进一步改进，上述调节螺钉内设有细孔通道，细孔通道的出口端贯穿调节螺钉的底面，细孔通道的进口端贯穿调节螺钉的周壁。这样将调节螺钉拧紧后，调节螺钉的锥形面与阀口完全接触，阀口关闭，这时燃气只能经由细孔通道进入内环喷嘴出气通道内，这时在最小火状态下的内环火最小。调节更人性化。
本发明解决上述技术问题所采用的第二个技术方案为：一种可实现外环火和内环火同步变化的燃气阀，包括内部具有进气通道、外环喷嘴出气通道和内环喷嘴出气通道的阀体，阀体内设有能旋转的阀芯，阀芯下部设有开口朝下通气腔，通气腔侧壁上开有通过阀芯的旋转出气量可变化的外环火孔；其特征在于：阀芯的外周壁上设有与通气腔阻断的呈弧形的内环火凹槽、及与通气腔相通的内环小孔道和阀芯小孔，内环小孔道位于外环火孔和内环火凹槽之间，阀芯小孔间隔设于内环火凹槽外侧，内环火凹槽、内环小孔道及阀芯小孔用以与内环喷嘴出气通道相通，阀体内部设有过渡气道和辅助气道，过渡气道分为两路，一路用以连通外环火孔与外环喷嘴出气通道，另一路用以连通外环火孔与内环火凹槽，所述辅助气道与内环喷嘴出气通道连通；在阀芯处于原始状态下，外环火孔同时与过渡气道和辅助气道阻断，阀芯小孔及内环小孔道均与内环喷嘴出气通道阻断；在阀芯从原始状态转动至第一角度时，外环火孔同时与过渡气道和辅助气道阻断，阀芯小孔直接与内环喷嘴出气通道连通；在阀芯从第一角度转动到第二角度过程中，能使外环火孔与过渡气道的重叠面积发生变化实现外环火孔出气量发生变化，同时内环火凹槽与内环喷嘴出气通道始终相通；在阀芯转动至第二角度时，外环火孔与过渡气道阻断，同时，外环火孔与辅助气道相通，内环小孔道与内环喷嘴出气通道相通；在阀芯从第二角度转动到第三角度过程中，外环火孔依然与过渡气道阻断，内环小孔道与内环喷嘴出气通道的重叠面积发生变化实现内环喷嘴出气通道出气量发生变化。
上述第二个技术方案的优点在于：1、在阀芯从原始状态转动至第一角度时，外环火孔同时与过渡气道和辅助气道阻断，阀芯小孔直接与内环喷嘴出气通道连通，这就保证在点火开始时，内环先于外环产生火焰，同理，在内外环都有火焰时，阀杆关闭过程中，外环火先于内环火熄灭，这就保证燃气灶具使用的安全性。
2、在阀芯从第一角度转动到第二角度过程中，能使外环火孔与过渡气道的重叠面积发生变化实现外环火孔出气量发生变化，同时内环火凹槽与内环喷嘴出气通道始终相通；在阀芯转动至第二角度时，外环火孔与过渡气道阻断，同时，外环火孔与辅助气道相通，内环小孔道与内环喷嘴出气通道相通；本燃气阀改变传统燃气阀的进气方式，燃气先经由通过阀芯的旋转出气量可变化的外环火孔后再进行分配，分别分配到外环喷嘴出气通道和内环喷嘴出气通道，故只要通过外环火孔的气量发生变化，外环喷嘴出气通道和内环喷嘴出气通道的出气量将同步变化，最终实现外环火和内环火同步变化，采用该阀的燃气灶具特别适合用以小火煎蛋或摊饼，并且在最小火状态，燃气经由外环火孔、辅助气道与内环喷嘴出气通道连通，确保小火不灭。
3、在阀芯从第二角度转动到第三角度过程中，外环火孔依然与过渡气道阻断，通过内环小孔道与内环喷嘴出气通道的重叠面积发生变化实现内环喷嘴出气通道出气量发生变化，可以实现在外环火关闭状态下，内环火焰由小火变大火，再由大火便小火的功能，内环火焰的调节更利于煲汤。
上述导气槽为螺旋式阶梯槽，在阀芯转动过程中，随着角度的变化，阀体通过导气槽不同位置时的流量变化会更明显，火焰变化更为明显。
由于阀芯与阀体配合面须添加油保证两者在旋转过程中不易受损，有润滑效果，原有阀芯在旋转过中油容易跑入螺旋槽内。堵塞影响阀体的流量，堵塞过多会导致无流量。故上述阀芯外周壁邻近导气槽位置处设有阻油槽。阻油槽的功能在于旋转过程中，油会跑进其槽中，阻止油再跑螺旋槽中，防止堵塞影响阀体流量
优选，上述大火孔为椭圆形孔，该椭圆形孔的长度方向与阀芯的轴向平行。这样阀芯的转动，能使两者重叠面积发生的变化更明显，进而使火焰变化更为明显。
优选，上述阀体上内环喷嘴出气通道的进口的横截面外形呈扇形。同理，阀芯的转动，能使两者重叠面积发生的变化更明显，进而使内环火焰变化更为明显。
与现有技术相比，本发明的优点在于：本燃气阀改变传统燃气阀的进气方式，燃气先经由通过阀芯的旋转出气量可变化的外环火孔后再进行分配，分别分配到外环喷嘴出气通道和内环喷嘴出气通道，故只要通过外环火孔的气量发生变化，外环喷嘴出气通道和内环喷嘴出气通道的出气量将同步变化，最终实现外环火和内环火同步变化，采用该阀的燃气灶具特别适合用以小火煎蛋或摊饼，并且在最小火状态，燃气经由外环火孔、辅助气道与内环喷嘴出气通道连通，确保小火不灭。
附图说明
图1为本发明实施例一的立体结构示意图一；
图2为本发明实施例一的立体结构示意图二；
图3为本发明实施例一的阶梯剖视图(阀芯处于原始状态)；
图4为实施例一的沿内环喷嘴出气通道轴线方向的剖视图(阀芯处于原始状态)；
图5为本发明实施例一的过渡气道轴向方向的剖视图(阀芯处于大火状态)；
图6为实施例一的沿内环喷嘴出气通道轴线方向的剖视图(阀芯处于大火状态)；
图7为本发明实施例一的过渡气道轴向方向的剖视图(阀芯处于调火中间状态)；
图8为本发明实施例一沿内环喷嘴出气通道轴线方向的剖视图(阀芯处于调火中间状态)；
图9为本发明实施例一的过渡气道轴向方向的剖视图(阀芯处于最小火状态)；
图10为实施例一中沿内环喷嘴出气通道轴线方向的剖视图(阀芯处于最小火状态)；
图11为本发明实施例一中阀芯的立体结构示意图一；
图12为本发明实施例一中阀芯的立体结构示意图二。
图13为本发明实施例二的阶梯剖视图(阀芯处于原始状态)；
图14为实施例二沿内环喷嘴出气通道轴线方向的剖视图(阀芯处于原始状态)；
图15为本发明实施例二的沿内环喷嘴出气通道轴线方向的剖视图(阀芯转动至第一角度状态)；
图16为本发明实施例二的过渡气道轴向方向的剖视图(阀芯处于大火状态，阀芯转动至第一角度和第二角度之间)；
图17为本发明实施例二的沿内环喷嘴出气通道轴线方向的剖视图(阀芯处于大火状态，阀芯转动至第一角度和第二角度之间)；
图18为本发明实施例二的过渡气道轴向方向的剖视图(阀芯处于调火中间状态，阀芯转动至第一角度和第二角度之间)；
图19为本发明实施例二的沿内环喷嘴出气通道轴线方向的剖视图(阀芯处于调火中间状态，阀芯转动至第一角度和第二角度之间)；
图20为本发明实施例二的过渡气道轴向方向的剖视图(阀芯转动至第二角度状态)；
图21为本发明实施例二的沿内环喷嘴出气通道轴线方向的剖视图(阀芯至第二角度状态)；
图22为本发明实施例二中内环小孔道与内环喷嘴出气通道13的重叠面积发生变化的原理示意图(阀芯从第二角度转动到第三角度过程中)。
图23为本发明实施例二中阀芯的立体结构示意图一；
图24为本发明实施例二中阀芯的立体结构示意图二。
具体实施方式
以下结合附图实施例对本发明作进一步详细描述。
如图1～12所示，为本发明的第一个实施例。
一种可实现外环火和内环火同步变化的燃气阀，包括内部具有进气通道11、外环喷嘴出气通道12和内环喷嘴出气通道13的阀体1，阀体1由阀座和底盖组成，图纸中的剖视图将底盖隐藏，底盖没有剖到，如图3～10所示。阀体1内设有能旋转的阀芯2，阀芯2内的下部设有开口朝下通气腔4，阀芯2由阀杆7驱动旋转，阀芯2与阀杆7之间的连接结构为现有技术。
通气腔4侧壁上开有通过阀芯2的旋转出气量可变化的外环火孔3；外环火孔3出气量变化的原理和现有燃气阀相同，外环火孔3与过渡气道14的重叠面积发生变化实现外环火孔3出气量发生变化。
本实施例中，外环火孔3包括直接与通气腔4连通的大火孔31，及设置在阀芯2外周壁上并呈弧状的导气槽32，该导气槽32起始端的开口部321与大火孔31连通。导 气槽32沿阀芯2的外周壁逐渐向上倾斜设置。在大火孔31与下述过渡气道14正对导通的状态下，通气量最大，在调节过程中，通过导气槽32与下述过渡气道14重叠面积发生变化实现外环火孔3出气量发生变化，在大火孔31同时过渡气道14和辅助气道15阻断的状态下，通气量为零。
阀芯2的外周壁上设有与通气腔4阻断的呈弧形的内环火凹槽5，内环火凹槽5与内环喷嘴出气通道13相通，阀体1内部设有过渡气道14和辅助气道15，过渡气道14分为两路，一路用以连通外环火孔3与外环喷嘴出气通道12，另一路用以连通外环火孔3与内环火凹槽5，辅助气道15与内环喷嘴出气通道13连通；在阀芯2处于原始状态下，外环火孔3同时与过渡气道14和辅助气道15阻断；在阀芯2旋转调节火势过程中，能使外环火孔3与过渡气道14的重叠面积发生变化实现外环火孔3出气量发生变化，同时内环火凹槽5与内环喷嘴出气通道13始终相通；在阀芯2旋转至最小火状态，外环火孔3与过渡气道14阻断，同时外环火孔3与辅助气道15相通。
辅助气道15设置在内环喷嘴出气通道13的上方，辅助气道15和内环喷嘴出气通道13之间通过阀口16连通，辅助气道15的侧壁上竖向穿设有调节螺钉6，调节螺钉6的下端外周具有与所述阀口16配合的锥形面61。调节螺钉6内设有细孔通道62，细孔通道62的出口端贯穿调节螺钉6的底面，细孔通道62的进口端贯穿调节螺钉6的周壁。本结构使得在最小火状态下的内环火大小可调节，调节时转动调节螺钉6，通过锥形面61与阀口之间的间距的改变，实现内环火大小的调节。
本燃气阀实施例的工作原理及过程如下；
原始状态：外环火孔3同时与过渡气道14和辅助气道15完全错开，使得燃气不能通过外环火孔3后进入到外环喷嘴出气通道12和内环喷嘴出气通道13，燃气不能通过燃气阀，燃气灶不能被点燃。如图1～4所示。
点火状态：下移并转动阀芯，外环火孔3中的大火孔31与过渡气道14正对导通的状态下，通气量最大，如图5、6所示，燃气经由进气通道11、阀芯的通气腔4、大火孔31和过渡气道14后分成两路，一路通往外环喷嘴出气通道12，另一路经由内环火凹槽5后通往内环喷嘴出气通道13。
调节火势过程：调小火势，带动阀芯2旋转，使外环火孔3中的大火孔31与过渡气道14的进口端逐渐错位，继续旋转，导气槽32逐渐与过渡气道14的进口端重合并逐渐错位，这样燃气经由外环火孔3进入过渡气道14的燃气量逐渐减少，即通过过渡气道14分配到外环喷嘴出气通道12和内环喷嘴出气通道13的气量同步逐渐减少，最终实现外环火和内环火同步火势变小的目的。如图7、8所示，调大火势过程，刚好相反。另外在最小火状态，外环火孔3与过渡气道14阻断，同时外环火孔3与辅助气道15相通，燃气由进气通道11、阀芯的通气腔4、大火孔31和辅助气道15后，通往内环喷嘴出气通道13，这时只有内环火在燃烧，确保小火不灭。如图9、10所示。
如图13～24所示，为本发明的第二个实施例。
一种可实现外环火和内环火同步变化的燃气阀，包括内部具有进气通道11、外环喷嘴出气通道12和内环喷嘴出气通道13的阀体1，内环喷嘴出气通道13的进口的横截面外形呈扇形。阀体1由阀座和底盖组成，阀体1内设有能旋转的阀芯2，阀芯2内的下部设有开口朝下通气腔4，阀芯2由阀杆9驱动旋转，阀芯2与阀杆9之间的连接结构为现有技术。
如图23、24所示，阀芯2下部设有开口朝下通气腔4，通气腔4侧壁上开有通过阀芯2的旋转出气量可变化的外环火孔3；外环火孔3包括直接与通气腔4连通的大火孔31，及设置在阀芯2外周壁上并呈弧状的导气槽32，该导气槽32起始端的开口部32与大火孔31连通。导气槽32的底面呈阶梯状，阶梯状的方向为从大火孔31朝导气槽32末端的方向逐渐提高。大火孔31为椭圆形孔，该椭圆形孔的长度方向与阀芯的轴向平行。阀芯2的外周壁上设有与通气腔4阻断的呈弧形的内环火凹槽5、及与通气腔4相通的内环小孔道7和阀芯小孔8，内环小孔道7位于外环火孔3和内环火凹槽5之间，阀芯小孔8间隔设于内环火凹槽5外侧。
通气腔4侧壁上开有通过阀芯2的旋转出气量可变化的外环火孔3；外环火孔3出气量变化的原理和现有燃气阀相同，外环火孔3与过渡气道14的重叠面积发生变化实现外环火孔3出气量发生变化。
本实施例中，外环火孔3包括直接与通气腔4连通的大火孔31，及设置在阀芯2外周壁上并呈弧状的导气槽32，该导气槽32起始端的开口部321与大火孔31连通。导气槽32沿阀芯2的外周壁逐渐向上倾斜设置。在大火孔31与下述过渡气道14正对导通的状态下，通气量最大，在调节过程中，通过导气槽32与下述过渡气道14重叠面积发生变化实现外环火孔3出气量发生变化，在大火孔31同时过渡气道14和辅助气道15阻断的状态下，通气量为零。阀芯2外周壁邻近导气槽32位置处设有阻油槽10。
阀芯2的外周壁上设有与通气腔4阻断的呈弧形的内环火凹槽5、及与通气腔4相通的内环小孔道7和阀芯小孔8，内环小孔道7位于外环火孔3和内环火凹槽5之间，阀芯小孔8位于内环火凹槽5外侧；内环火凹槽5、内环小孔道7及阀芯小孔8用以与内环喷嘴出气通道13相通，阀体1内部设有过渡气道14和辅助气道15，过渡气道14分为两路，一路用以连通外环火孔3与外环喷嘴出气通道12，另一路用以连通外环火孔3与内环火凹槽5，辅助气道15与内环喷嘴出气通道13连通。
如图13、14所示，在阀芯2处于原始状态下，外环火孔3同时与过渡气道14和辅助气道15阻断，内环小孔道7及阀芯小孔8均与内环喷嘴出气通道13阻断。
如图15所示，在阀芯2从原始状态转动至第一角度时，第一角度为35°，外环火孔3同时与过渡气道14和辅助气道15阻断，阀芯小孔8直接与内环喷嘴出气通道13连通。
如图16～19所示，在阀芯2从第一角度转动到第二角度过程中，第二角度为190°。能使外环火孔3与过渡气道14的重叠面积发生变化实现外环火孔3出气量发生变化，同时内环火凹槽5与内环喷嘴出气通道13始终相通。
如图20、21所示，在阀芯2转动至第二角度时，外环火孔3与过渡气道14阻断，同时，外环火孔3与辅助气道15相通，内环小孔道7与内环喷嘴出气通道13相通。
如图22所示，在阀芯2从第二角度转动到第三角度过程中，第三角度为230°。外环火孔3依然与过渡气道14阻断，内环小孔道7与内环喷嘴出气通道13的重叠面积发生变化实现内环喷嘴出气通道13出气量发生变化。
辅助气道15设置及调节螺钉6与第一个实施例相同。
本燃气阀实施例的工作原理及过程如下：
原始状态：外环火孔3同时与过渡气道14和辅助气道15完全错开，使得燃气不能通过外环火孔3后进入到外环喷嘴出气通道12和内环喷嘴出气通道13，同时内环小孔道7及阀芯小孔8均与内环喷嘴出气通道13阻断，故燃气不能通过燃气阀，燃气灶不能被点燃。如图13、14所示。
点火时转动阀芯2从原始状态转动至第一角度时，外环火孔3依旧同时与过渡气道14和辅助气道15阻断，此时，阀芯小孔8先直接与内环喷嘴出气通道13连通。这就保证在点火开始时，内环先于外环产生火焰，同理，在内外环都有火焰时，阀芯2往关火方向旋转时，外环火先于内环火熄灭，这就保证燃气灶具使用的安全性。
在阀芯2从第一角度转动到第二角度过程中，能使外环火孔3与过渡气道14的重叠面积发生变化实现外环火孔3出气量发生变化，同时内环火凹槽5与内环喷嘴出气通道13始终相通；在阀芯2转动至第二角度时，外环火孔与过渡气道14阻断，同时，外环火孔3与辅助气道相通，内环小孔道7与内环喷嘴出气通道14相通；本燃气阀改变传统燃气阀的进气方式，燃气先通过阀芯2的旋转出气量可变化的外环火孔后再进行分配，分别分配到外环喷嘴出气通道12和内环喷嘴出气通道13，故只要通过外环火孔3的气量发生变化，外环喷嘴出气通道12和内环喷嘴出气通道13的出气量将同步变化，最终实现外环火和内环火同步变化，采用该阀的燃气灶具特别适合用以小火煎蛋或摊饼，并且在最小火状态，燃气经由外环火孔、辅助气道与内环喷嘴出气通道连通，确保小火不灭。
在阀芯2从第二角度转动到第三角度过程中，外环火孔3依然与过渡气道14阻断，通过内环小孔道7与内环喷嘴出气通道14的重叠面积发生变化实现内环喷嘴出气通道14出气量发生变化，可以实现在外环火关闭状态下，内环火焰由小火变大火，再由大火便小火的功能，内环火焰的调节更利于煲汤。

Claims (12)

  1. 一种可实现外环火和内环火同步变化的燃气阀，包括内部具有进气通道(11)、外环喷嘴出气通道(12)和内环喷嘴出气通道(13)的阀体(1)，阀体(1)内设有能旋转的阀芯(2)，阀芯(2)下部设有开口朝下通气腔(4)，通气腔(4)侧壁上开有通过阀芯(2)的旋转出气量可变化的外环火孔(3)；其特征在于：
    所述阀芯(2)的外周壁上设有与通气腔(4)阻断的呈弧形的内环火凹槽(5)，内环火凹槽(5)与内环喷嘴出气通道(13)相通，阀体(1)内部设有过渡气道(14)和辅助气道(15)，过渡气道(14)分为两路，一路用以连通外环火孔(3)与外环喷嘴出气通道(12)，另一路用以连通外环火孔(3)与内环火凹槽(5)，所述辅助气道(15)与内环喷嘴出气通道(13)连通；在阀芯(2)处于原始状态下，外环火孔(3)同时与过渡气道(14)和辅助气道(15)阻断；在阀芯(2)旋转调节火势过程中，能使外环火孔(3)与过渡气道(14)的重叠面积发生变化实现外环火孔(3)出气量发生变化，同时内环火凹槽(5)与内环喷嘴出气通道(13)始终相通；在阀芯(2)旋转至最小火状态，外环火孔(3)与过渡气道(14)阻断，同时外环火孔(3)与辅助气道(15)相通。
  2. 根据权利要求1所述可实现外环火和内环火同步变化的燃气阀，其特征在于：所述外环火孔(3)包括直接与通气腔(4)连通的大火孔(31)，及设置在阀芯(3)外周壁上并呈弧状的导气槽(32)，该导气槽(32)起始端的开口部(321)与大火孔(31)连通。
  3. 根据权利要求2所述可实现外环火和内环火同步变化的燃气阀，其特征在于：所述导气槽(32)沿阀芯(2)的外周壁逐渐向上倾斜设置。
  4. 根据权利要求1所述可实现外环火和内环火同步变化的燃气阀，其特征在于：所述外环火孔(3)包括多个沿圆周间隔设置且孔径大小不一的火孔部。
  5. 根据权利要求1所述可实现外环火和内环火同步变化的燃气阀，其特征在于：所述辅助气道(15)设置在内环喷嘴出气通道(13)的上方，辅助气道(15)和内环喷嘴出气通道(13)之间通过阀口(16)连通，辅助气道(15)的侧壁上竖向穿设有调节螺钉(6)，调节螺钉(6)的下端外周具有与所述阀口(16)配合的锥形面(61)。
  6. 根据权利要求5所述可实现外环火和内环火同步变化的燃气阀，其特征在于：所述调节螺钉(6)内设有细孔通道(62)，细孔通道(62)的出口端贯穿调节螺钉(6)的底面，细孔通道(62)的进口端贯穿调节螺钉(6)的周壁。
  7. 一种可实现外环火和内环火同步变化的燃气阀，包括内部具有进气通道(11)、外环喷嘴出气通道(12)和内环喷嘴出气通道(13)的阀体(1)，阀体(1)内设有能旋转的阀芯(2)，阀芯(2)下部设有开口朝下通气腔(4)，通气腔(4)侧壁上开有通过阀芯(2)的旋转出气量可变化的外环火孔(3)；其特征在于：所述阀芯(2)的外周壁上设有与通气腔(4)阻断的呈弧形的内环火凹槽(5)、及与通气腔(4)相通的内环小孔道(7)和阀芯小孔(8)，内环小孔道(7)位于外环火孔(3)和内环火凹槽(5)之间，阀芯小孔(8)间隔设于内环火凹槽(5)外侧， 所述内环火凹槽(5)、内环小孔道(7)及阀芯小孔(8)用以与内环喷嘴出气通道(13)相通，阀体(1)内部设有过渡气道(14)和辅助气道(15)，过渡气道(14)分为两路，一路用以连通外环火孔(3)与外环喷嘴出气通道(12)，另一路用以连通外环火孔(3)与内环火凹槽(5)，所述辅助气道(15)与内环喷嘴出气通道(13)连通；
    在阀芯(2)处于原始状态下，外环火孔(3)同时与过渡气道(14)和辅助气道(15)阻断，内环小孔道(7)及阀芯小孔(8)均与内环喷嘴出气通道(13)阻断；
    在阀芯(2)从原始状态转动至第一角度时，外环火孔(3)同时与过渡气道(14)和辅助气道(15)阻断，阀芯小孔(8)直接与内环喷嘴出气通道(13)连通；
    在阀芯(2)从第一角度转动到第二角度过程中，能使外环火孔(3)与过渡气道(14)的重叠面积发生变化实现外环火孔(3)出气量发生变化，同时内环火凹槽(5)与内环喷嘴出气通道(13)始终相通；
    在阀芯(2)转动至第二角度时，外环火孔(3)与过渡气道(14)阻断，同时，外环火孔(3)与辅助气道(15)相通，内环小孔道(7)与内环喷嘴出气通道(13)相通；
    在阀芯(2)从第二角度转动到第三角度过程中，外环火孔(3)依然与过渡气道(14)阻断，内环小孔道(7)与内环喷嘴出气通道(13)的重叠面积发生变化实现内环喷嘴出气通道(13)出气量发生变化。
  8. 根据权利要求7所述的燃气阀，其特征在于：所述外环火孔(3)包括直接与通气腔(4)连通的大火孔(31)，及设置在阀芯(3)外周壁上并呈弧状的导气槽(32)，该导气槽(32)起始端的开口部(321)与大火孔(31)连通；导气槽(32)沿阀芯(2)的外周壁逐渐向上倾斜设置，导气槽(32)的底面呈阶梯状，阶梯状的方向为从大火孔(31)朝导气槽(32)末端的方向逐渐提高。
  9. 根据权利要求8所述的燃气阀，其特征在于：所述阀芯(2)外周壁邻近导气槽(32)位置处设有阻油槽(10)。
  10. 根据权利要求7所述的燃气阀，其特征在于：所述大火孔(31)为椭圆形孔，该椭圆形孔的长度方向与阀芯的轴向平行。
  11. 根据权利要求7所述的燃气阀，其特征在于：所述阀体(1)上内环喷嘴出气通道(13)的进口的横截面外形呈扇形。
  12. 根据权利要求7所述的燃气阀，其特征在于：所述辅助气道(15)设置在内环喷嘴出气通道(13)的上方，辅助气道(15)和内环喷嘴出气通道(13)之间通过阀口(16)连通，辅助气道(15)的侧壁上竖向穿设有调节螺钉(6)，调节螺钉(6)的下端外周具有与所述阀口(16)配合的锥形面(61)；所述调节螺钉(6)内设有细孔通道(62)，细孔通道(62)的出口端贯穿调节螺钉(6)的底面，细孔通道(62)的进口端贯穿调节螺钉(6)的周壁。
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