CN114526354B - Gas valve - Google Patents

Abstract

The application discloses a gas valve, which comprises a valve body, wherein the valve body comprises a gas distribution chamber, an adjusting disc, a valve rod, an adjusting seat and a gas outlet seat, wherein the gas distribution chamber, a gas inlet communicated with the gas distribution chamber and a plurality of gas distribution chamber outlets are arranged in the gas distribution chamber; the adjusting disc follows the valve rod and is rotatably arranged in the air distribution cavity, the adjusting disc is provided with an air passing hole, and the air inlet is communicated with the outlet of the corresponding air distribution cavity through the air passing hole when the adjusting disc rotates to a preset angle; the adjusting seat is buckled with the gas distribution chamber, a transition air passage is formed in the adjusting seat and is communicated with the outlet of the corresponding gas distribution chamber, an adjusting core is arranged on the adjusting seat in a threaded mode, one end of the adjusting core is an operating end exposed to the adjusting seat, and the other end of the adjusting core is a working end extending into the corresponding transition air passage to change the gas flow; the air outlet seat is buckled on the adjusting seat and is provided with an air outlet communicated with the transition air passage. This scheme is for prior art, adjusts the core and adjusts gas flow to transition air flue to can adjust gas flow.

Description

Gas valve

Technical Field

The application relates to the field of valves, in particular to a gas valve.

Background

The pipeline gas or liquefied gas is used as fuel in present household appliances such as water heaters, gas stoves and the like, and the pipeline gas or liquefied gas is higher in heat efficiency and high in temperature rise rate compared with electric heating.

At present, the gas valve adjusts the gas output of a pipeline and comprises a valve body and an adjusting disc, wherein a gas passing hole is formed in the adjusting disc, an outlet is formed in the valve body, the gas distribution piece rotates, the gas passing hole in the gas distribution piece can be aligned to the outlet, gas is output, and the gas passing hole and the outlet are different in overlapping area, so that the difference of the gas output is caused.

However, when the adjusting disc is adjusted by gears, the air outlet quantity when the adjusting disc is in the gear can not be adjusted.

Disclosure of Invention

In order to solve the above problem, the present application provides a gas valve, including a valve body, the valve body includes:

the air distribution chamber is internally provided with an air distribution chamber, the air distribution chamber is provided with an air inlet communicated with the air distribution chamber and a plurality of air distribution chamber outlets, and the plurality of air distribution chamber outlets are distributed on the first output side of the air distribution chamber;

the adjusting disc is rotatably arranged in the air distribution cavity, is provided with an air passing hole and communicates the air inlet with the outlet of the corresponding air distribution chamber through the air passing hole when rotating to a preset angle;

the valve rod is rotatably arranged in the air distribution chamber and extends into the air distribution chamber, and the adjusting disc is connected with and follows the valve rod;

the adjusting seat is buckled on the first output side of the gas distribution chamber, a transition air passage is formed in the adjusting seat, the transition air passage is provided with a gas inlet side communicated with the outlet of the corresponding gas distribution chamber and an opposite gas outlet side, an adjusting core is installed on the adjusting seat in a threaded mode, one end of the adjusting core is an operating end exposed to the adjusting seat, and the other end of the adjusting core is a working end extending into the corresponding transition air passage to change the gas flow;

and the air outlet seat is buckled on the adjusting seat, an air outlet is formed in the air outlet seat, and the air outlet is communicated with the air outlet side of the transition air passage.

Several alternatives are provided below, but not as an additional limitation to the above general solution, but merely as a further addition or preference, each alternative being combinable individually for the above general solution or among several alternatives without technical or logical contradictions.

Optionally, the air distribution chamber includes an end cover and an air distribution seat that are fastened to each other, the end cover and the air distribution seat surround the air distribution chamber, the air inlet is disposed on the air distribution seat, and a first electromagnetic valve that controls the air inlet is disposed on the air distribution seat.

Optionally, the adjusting seat has a second input side facing the air distribution chamber and a second output side facing the air outlet seat;

the gas outlet seat is provided with two gas outlets, the transition gas passages are divided into two groups, and each group is respectively communicated with one corresponding gas outlet.

Optionally, a plurality of unit cavities which are isolated from each other are arranged on a second input side of the adjusting seat, each unit cavity corresponds to the outlet of the air distribution chamber one by one, and an air inlet side of each transition air passage corresponds to each unit cavity one by one;

the second output side of the adjusting seat is provided with a mixing cavity, and the gas outlet sides of one group of transition gas passages are communicated to the mixing cavity and communicated with the corresponding gas outlets through the mixing cavity;

and at least one of the transition air passages communicated to the mixing cavity is an adjustable air passage, and the adjusting core extends into the adjustable air passage.

Optionally, the group of transition air passages communicated to the mixing cavity includes a plurality of adjustable air passages and at least one fixed air passage, the plurality of adjustable air passages are respectively configured with the adjusting core, and the operating end of the adjusting core is located on the same side of the adjusting seat.

Optionally, the adjusting cores are located in the circumferential direction of the mixing cavity and are arranged at intervals in sequence.

Optionally, the unit cavity is opened at the second input side, and the outer edge of the opened side of the unit cavity surrounds the corresponding outlet of the air distribution chamber and abuts against the first output side of the air distribution chamber.

Optionally, the mixing cavity is open to the second output side, and the outlet seat closes the mixing cavity.

Optionally, the adjustable air passage includes two unit sections that are communicated with each other, wherein one unit section is communicated with the unit cavity, and the other unit section is opened on the side wall of the mixing cavity and is communicated with the mixing cavity;

the adjusting core extends to the joint of the two unit sections.

Optionally, the adjusting core is rod-shaped, and the adjusting seat has an adjusting hole through which the adjusting core passes and which is in threaded fit with the adjusting core;

the inner wall of the adjusting hole is provided with a limiting step, the side wall of the adjusting core is provided with a boss matched with the limiting step, and the boss is matched with the limiting step to limit the limiting position of the adjusting core in the adjusting hole.

The gas valve in this application adjusts gas flow to transition air flue through adjusting the core to can adjust gas flow.

Drawings

FIG. 1 is a schematic diagram of an embodiment of a gas valve provided herein;

FIG. 2 is an exploded schematic view of the gas valve of FIG. 1;

FIG. 3 is a cross-sectional view of the gas valve of FIG. 1;

FIG. 4 is a schematic view of a portion of the gas valve of FIG. 1;

FIG. 5 is a schematic structural view of FIG. 4 with the partition omitted;

FIG. 6 is a schematic structural view of the gas distribution base in FIG. 5;

FIG. 7 is a schematic view of the valve seat of FIG. 5 from another perspective;

FIG. 8 is a schematic view of the structure of the adjustment disk of FIG. 5;

FIG. 9 is a schematic structural view of the adjustment seat in FIG. 1;

FIG. 10 is a schematic view of another angle of view of the adjustable base of FIG. 1;

FIG. 11 is a cross-sectional view of the adjustment block of FIG. 9;

FIG. 12 is a partial cross-sectional view of the adjustment block of FIG. 9;

FIG. 13 is a schematic view of the structure of the conditioning core of FIG. 9;

FIG. 14 is a view of the air holes and the outlets of the air distribution chambers when the adjustment dial 20 is rotated by 0, 20, and 30 degrees;

FIG. 15 is a view of the cooperation of the vent and the outlet of the air distribution chamber of the regulator disk 20 shown in FIGS. 40, 50, 60, and 70 degrees of rotation;

FIG. 16 is a view of the air holes and the air distribution chamber outlet when the adjustment dial 20 is rotated 80 degrees, 90 degrees and 100 degrees.

The reference numerals in the figures are illustrated as follows:

100. a valve body;

10. a gas distribution chamber; 11. an end cap; 12. a gas distribution base; 121. a plane; 122. a boss; 123. a positioning column; 13. a gas distribution cavity; 14. an air inlet; 15. an inlet of the distribution chamber; 151. a first inlet; 152. a second inlet; 153. a third inlet; 154. a fourth inlet; 155. a fifth inlet; 156. a sixth inlet; 157. a seventh inlet; 158. an eighth inlet; 16. an outlet of the gas distribution chamber; 161. a first outlet; 162. a second outlet; 163. a third outlet; 164. a fourth outlet; 165. a fifth outlet; 166. a sixth outlet; 167. a seventh outlet; 168. an eighth outlet; 17. a first solenoid valve;

20. an adjusting disk; 21. air passing holes; 211. a first air passing hole; 212. a second air passing hole; 2121. a first portion; 2122. a second portion; 213. a third air passing hole; 214. a fourth air passing hole; 215. a fifth air passing hole; 216. a sixth air passing hole; 22. a partition plate;

30. a valve stem;

40. an adjusting seat; 41. a transition gas passage; 411. a first transition gas duct; 412. a second transition gas duct; 413. a third transition duct; 414. a fourth transition duct; 415. a fifth transition gas passage; 416. a sixth transition duct; 417. a seventh transition duct; 418. an eighth transition duct; 419. a unit section; 42. adjusting the core; 421. an operation end; 422. a working end; 423. a convex ring; 43. a unit chamber; 44. a mixing chamber; 45. a first seal ring; 46. an adjustment hole; 47. a limiting step;

50. an air outlet seat; 51. an air outlet; 511. a first air outlet; 512. a second air outlet; 52. a second solenoid valve; 53. a second seal ring;

60. a drive member.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the present application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

As shown in fig. 1 to 3, the present application provides a gas valve, which includes a valve body 100, the valve body 100 includes a gas distribution chamber 10, an adjusting disc 20 and a valve rod 30, a gas distribution chamber 13 is arranged inside the gas distribution chamber 10, and the gas distribution chamber 10 has a gas inlet 14 communicated with the gas distribution chamber 13 and a plurality of gas distribution chamber outlets 16; the adjusting disk 20 follows the valve rod 30 and is rotatably installed in the air distribution chamber 13, the adjusting disk 20 is provided with an air passing hole 21, and the air inlet 14 is communicated with the corresponding air distribution chamber outlet 16 through the air passing hole 21 when the adjusting disk rotates to a preset angle.

The air distribution chamber 10 comprises an end cover 11 and an air distribution seat 12 which are buckled with each other, the end cover 11 and the air distribution seat 12 enclose an air distribution chamber 13, and an air inlet 14 is arranged on the air distribution seat 12. The end cover 11 and the air distribution seat 12 are detachably connected through screws and the like, and a sealing ring can be arranged between the end cover 11 and the air distribution seat 12 when necessary.

One side of the air distribution seat 12 facing the outside of the air distribution cavity 13 is a first output side, a plurality of air distribution chamber outlets 16 are distributed on the first air outlet side of the air distribution chamber 10, one side facing the inside of the air distribution cavity 13 is a first inlet-outlet side, a plurality of air distribution chamber inlets 15 are arranged on the first input side, and each air distribution chamber outlet 16 is correspondingly communicated with each air distribution chamber inlet 15.

The gas distribution base 12 is provided with a first electromagnetic valve 17 for controlling the gas inlet 14, and the first electromagnetic valve 17 can control the medium (such as natural gas and the like) to enter the gas distribution chamber 13. For example, in the figure, the number of the first electromagnetic valves 17 is two, and each of the two first electromagnetic valves 17 can independently open and close the gas inlet 14 of the gas valve.

The valve rod 30 is rotatably installed in the air distribution chamber 10, one axial end of the valve rod 30 extends into the air distribution chamber 13 and is connected with the shaft hole at the center of the adjusting disc 20 so as to drive the adjusting disc 20 to rotate around an axis, and the other axial end is located outside the air distribution chamber 10 and is connected with the driving member 60. Wherein, the adjusting disk 20 is overlapped with the air distribution seat 12, and the overlapping area between the air passing hole 21 and the corresponding air distribution chamber outlet 16 is adjusted in the rotating process of the adjusting disk 20. In some embodiments, the drive 60 may be a manual drive as is known in the art.

In order to avoid the medium from flowing out from the place where the air distribution seat 12 abuts the adjusting disc 20, without affecting the rotation of the adjusting disc 20, referring to one of the embodiments, as shown in fig. 4 to 6, the inner wall of the air distribution seat 12 has a plane 121 that abuts the adjusting disc 20, and the plurality of air distribution chamber outlets 16 are distributed on the plane 121.

In this embodiment, the gas valve further includes a partition 22, the partition 22 is located on a side of the adjusting disk 20 opposite to the gas distributing seat 12 and is sleeved on the valve rod 30, and the positions of the partition 22 and the gas distributing seat 12 are relatively fixed to limit the axial position of the adjusting disk 20. The connection mode between the partition 22 and the air distribution seat 12 is that, in some embodiments, the inner wall of the air distribution seat 12 has a boss 122 flush with the adjusting disk 20, a positioning column 123 is arranged on the boss 122, a positioning hole matched with the positioning column 123 is arranged on the partition 22, and the positioning column 123 limits the partition 22 to rotate along with the adjusting disk 20; the partition plate 22 and the inner wall of the air distribution chamber 13 are provided with springs, two ends of each spring are abutted between the inner wall of the air distribution chamber 13 and the partition plate 22, and the partition plate 22 transmits the elastic force of each spring to the adjusting disc 20 so as to enable the adjusting disc 20 to be attached to the plane 121.

The burner of a range generally has an inner ring and an outer ring, and the corresponding gas distribution chamber outlet 16 is connected with the outer ring and the inner ring of the range respectively through a pipeline. When the adjusting disc 20 rotates relative to the air distribution base 12, the adjusting disc is divided into a plurality of gears according to the angle interval, and the overlapping area between each air passing hole 21 and the corresponding air distribution chamber 10 in each gear is different, so that the firepower of the inner ring and the outer ring can be adjusted. For example, the gas valve has five gears, which are an initial gear, a first gear, a second gear, a third gear, a fourth gear, and a final gear.

In order to realize different air outlet quantities of all gears, the adjusting disk 20 is provided with a plurality of air passing holes 21, and when the air passing holes 21 are sequentially arranged along the circumferential direction of the adjusting disk 20, the radial size of the adjusting disk 20 is increased, so that the arrangement of the air passing holes 21 on the adjusting disk 20 is met. However, an increase in the radial dimension of the adjustment disc 20 increases the volume of the gas valve.

In order to solve the above technical problem, in the present embodiment, as shown in fig. 6 to 8, the air passing holes 21 and the air distribution chamber inlets 15 respectively include three groups sequentially arranged from inside to outside along the radial direction of the adjusting disk 20, the three groups are sequentially arranged along the circumferential direction of the adjusting disk 20, and when the adjusting disk 20 rotates to a predetermined angle, the air passing holes 21 are communicated with the air distribution chamber inlets 15 having the same radial position. The arrangement of the multiple groups of air passing holes 21 fully utilizes the radial space on the adjusting disk 20, and can reduce the radial size of the adjusting disk 20. Wherein, three groups which are sequentially arranged from inside to outside are respectively an inner group, a middle group and an outer group.

In the arrangement of the inner group, referring to one embodiment, the air passing hole 21 of the inner group is a first air passing hole 211 and extends in a strip shape along the circumferential direction of the air distribution seat 12; the gas distribution chamber inlet 15 of the inner group is a first inlet 151, and the gas distribution chamber outlet 16 corresponding to the first inlet 151 is a first outlet 161; the first air passing hole 211 and the first inlet 151 are kept in a continuous conduction state in at least two gears.

When the adjusting disc 20 rotates relative to the air distribution base 12, the first air passing hole 211 and the first inlet 151 are just in a conducting state to correspond to an initial gear; when the two gears are completely staggered, the last gear is corresponding to the two gears; the central angle of the adjusting disk 20 corresponding to the first air passing hole 211 is 100-135 degrees, the total angle of rotation of the adjusting disk 20 between the initial gear and the final gear is 100-135 degrees, and the two are always kept in a conducting state.

The nearly complete offset is understood to be the state of communication between the first air passing hole 211 and the first inlet 151. The first inlet 151 is communicated with an inner ring, and the inner ring is always in a fire state in each gear (including an initial gear and a last gear).

In the arrangement of the middle group, referring to one embodiment, the air holes 21 of the middle group are the second air holes 212 and the third air holes 213, and the second air holes 212 extend in a strip shape along the circumferential direction of the air distribution seat 12; the gas distribution chamber inlet 15 of the middle group is a second inlet 152 and a third inlet 153, and the two gas distribution chamber outlets 16 corresponding to the second inlet 152 and the third inlet 153 are a second outlet 162 and a third outlet 163 respectively; in each intermediate gear, the second air passing hole 212 and the second inlet 152 are kept in continuous conduction, and the third air passing hole 213 and the third inlet 153 are only in aligned conduction at the last gear.

The second air passing hole 212 includes a first portion 2121 and a second portion 2122 communicating with each other along the circumferential direction of the adjustment disk 20; in each intermediate gear, the first portion 2121 and the second inlet 152 are kept in a continuous conduction state; the second portion 2122 is aligned with the second inlet 152 only at the last gear.

The first part 2121 extends along the circumferential direction of the gas distribution seat 12 to form a strip shape, and the included angle of the circle center of the adjusting disc 20 corresponding to the first part 2121 is 60 degrees to 70 degrees; the second portion 2122 is a circular hole. When the dial 20 is shifted from the initial gear to the final gear, the first portion 2121 first contacts the second inlet 152, and the second portion 2122 completely overlaps the second inlet 152 until the final gear.

In the radial direction of the adjusting disk 20, the width of the first portion 2121 is L1, the inner diameter of the second portion 2122 is L2, and L1: l2=1: (3-4). The area of overlap of the first portion 2121 and the second inlet 152 in each intermediate gear is less than the area of overlap of the second portion 2122 and the second inlet 152 in the last gear.

In the arrangement of the outer group, referring to one of the embodiments, the air holes 21 of the outer group are the fourth air hole 214, the fifth air hole 215 and the sixth air hole 216; the plenum chamber inlets 15 of the outer set are fourth inlet 154, fifth inlet 155, sixth inlet 156, seventh inlet 157, and eighth inlet 158, and the four plenum chamber outlets 16 corresponding to the fourth inlet 154, fifth inlet 155, sixth inlet 156, seventh inlet 157, and eighth inlet 158 are fourth outlet 164, fifth outlet 165, sixth outlet 166, seventh outlet 167, and eighth outlet 168, respectively;

in four continuous intermediate gears, the matching relationship is as follows:

the fourth air passing hole 214 is aligned with the fourth inlet 154;

the fifth venting hole 215 is aligned with the fifth inlet 155;

the fourth air passing hole 214 is aligned with and communicated with the sixth inlet 156;

the fifth venting hole 215 is aligned with the seventh inlet 157;

the sixth air passing hole 216 and the eighth inlet 158 are aligned and communicated only at the last gear.

The fourth inlet 154, the sixth inlet 156, the fifth inlet 155, the seventh inlet 157, and the eighth inlet 158 are sequentially arranged at intervals in the circumferential direction of the dial 20; in the first of the four consecutive intermediate gears, the fourth air passing hole 214 is between the fourth inlet 154 and the eighth inlet 158, the fifth air passing hole 215 is between the third inlet 153 and the fifth inlet 155, and the sixth air passing hole 216 is between the seventh inlet 157 and the eighth inlet 158.

In the preceding of the four consecutive intermediate gears: the central angle of the fourth air passing hole 214 corresponding to the fourth inlet 154 is smaller than the central angle of the fifth air passing hole 215 corresponding to the fifth inlet 155; the central angle of the fifth air passing hole 215 corresponding to the fifth inlet 155 is smaller than the central angle of the fourth air passing hole 214 corresponding to the sixth inlet 156; the central angle of the fourth air passing hole 214 corresponding to the sixth inlet 156 is smaller than the central angle of the fifth air passing hole 215 corresponding to the sixth inlet 156.

Wherein the four consecutive intermediate gears are: first gear, second gear, third gear, fourth gear, and fifth gear. The previous gear of the four consecutive intermediate gears is the initial gear.

As shown in fig. 14 to 16, the following explains the conducting relationship between the air passing hole 21 and the corresponding air distribution chamber inlet 15 at each shift position:

in the initial gear, only the first air passing hole 211 is communicated with the first inlet 151;

in the first gear, when the adjustment plate 20 rotates 20 degrees, the first air passing hole 211 is continuously communicated with the first inlet 151, the second air passing hole 212 is communicated with the second inlet 152, and the fourth air passing hole 214 is communicated with the fourth inlet 154;

when the adjusting disk 20 rotates 30 degrees, the first air passing hole 211 is communicated with the first inlet 151, the second air passing hole 212 is communicated with the second inlet 152, the fourth air passing hole 214 is communicated with the fourth inlet 154, and the fifth air passing hole 215 is communicated with the fifth inlet 155;

in the second gear, when the adjustment disc 20 rotates 40 degrees, the first air passing hole 211 is communicated with the first inlet 151, the second air passing hole 212 is communicated with the second inlet 152, and the fifth air passing hole 215 is communicated with the fifth inlet 155;

when the adjusting disk 20 rotates 50 degrees, the first air passing hole 211 is communicated with the first inlet 151, the second air passing hole 212 is communicated with the second inlet 152, and the fifth air passing hole 215 is communicated with the fifth inlet 155;

in the third gear, when the adjustment plate 20 rotates 60 degrees, the first air passing hole 211 is communicated with the first inlet 151, the second air passing hole 212 is communicated with the second inlet 152, and the fourth air passing hole 214 is communicated with the sixth inlet 156;

when the adjusting disk 20 rotates by 70 degrees, the first air passing hole 211 is communicated with the first inlet 151, the second air passing hole 212 is communicated with the second inlet 152, the fourth air passing hole 214 is communicated with the sixth inlet 156, and the fifth air passing hole 215 is communicated with the seventh inlet 157;

in the fourth gear, when the adjustment plate 20 rotates 80 degrees, the first air passing hole 211 is communicated with the first inlet 151, the second air passing hole 212 is communicated with the second inlet 152, and the fifth air passing hole 215 is communicated with the seventh inlet 157;

when the adjusting disc 20 rotates 90 degrees, the first air passing hole 211 is communicated with the first inlet 151, the second air passing hole 212 is communicated with the second inlet 152, the fifth air passing hole 215 is communicated with the seventh inlet 157, the third air passing hole 213 is communicated with the third inlet 153, and the sixth air passing hole 216 is communicated with the eighth inlet 158;

in the last gear, when the dial 20 rotates 100 degrees, the first air passing hole 211 communicates with the first inlet 151, the second air passing hole 212 communicates with the second inlet 152, the third air passing hole 213 communicates with the third inlet 153, and the sixth air passing hole 216 communicates with the eighth inlet 158.

When the adjusting disk 20 is adjusted by the driving member 60 in a gear-by-gear manner, the gas outlet amount of the adjusting disk 20 in the gear cannot be adjusted, so that the use of the gas valve is limited. In order to solve the technical problem, in the present embodiment, as shown in fig. 9 to 13, the valve body 100 further includes an adjusting seat 40, the adjusting seat 40 is fastened to the first output side of the air distribution chamber 10, a transition air passage 41 is formed in the adjusting seat 40, the transition air passage 41 has an air inlet side communicated with the corresponding air distribution chamber outlet 16 and an opposite air outlet side, an adjusting core 42 is threadedly installed on the adjusting seat 40, one end of the adjusting core 42 is an operating end 421 exposed to the air distribution chamber 10, and the other end of the adjusting core is a working end 422 extending into the corresponding transition air passage 41 to change the gas flow.

The adjusting seat 40 is substantially block-shaped (for example, the cross section of the adjusting seat 40 is rectangular), the adjusting seat 40 has a second input side facing the air distribution chamber 10 and a second output side facing away from the air distribution chamber 10, the second input side of the adjusting seat 40 is fastened to the air distribution seat 12 and fixed to the air distribution seat 12 by means of screws or the like, and a first sealing ring 45 may be disposed between the adjusting seat 40 and the air distribution seat 12.

In this embodiment, the valve body 100 further includes an air outlet seat 50, the air outlet seat 50 is fastened to the second output side of the adjusting seat 40 and fixed to the air distribution seat 12 by screws, and a second sealing ring 53 may be disposed between the air outlet seat 50 and the fixing seat.

The air outlet seat 50 is provided with an air outlet 51 communicated with the air outlet side of the transition air passage 41. Two air outlets 51 on the air outlet seat 50 are respectively a first air outlet 511 and a second air outlet 512, the first air outlet 511 is connected with the inner ring, and the second air outlet 512 is connected with the outer ring; the gas outlet seat 50 is provided with a second electromagnetic valve 52 for controlling the second gas outlet 512, and the second electromagnetic valve 52 can control media (such as natural gas).

The transition gas passages 41 are divided into two groups, and each group is respectively communicated with one corresponding gas outlet 51. For example, the number of the transition air ducts 41 is eight: first transition gas passage 411, second transition gas passage 412, third transition gas passage 413, fourth transition gas passage 414, fifth transition gas passage 415, sixth transition gas passage 416, seventh transition gas passage 417 and eighth transition gas passage 418, and are respectively communicated with first outlet 161, second outlet 162, third outlet 163, fourth outlet 164, fifth outlet 165, sixth outlet 166, seventh outlet 167 and eighth outlet 168. The first transition duct 411 is a first group and is communicated with the first air outlet 511, and the other transition ducts are a second group and are communicated with the second air outlet 512.

The second input side of the adjusting seat 40 has a plurality of unit cavities 43 isolated from each other, the unit cavities 43 are opened at the second input side, and the outer edge of the opened side of the unit cavities 43 surrounds the corresponding air distribution chamber outlet 16 and is abutted with the first output side of the air distribution chamber 10. The unit cavities 43 correspond to the air distribution chamber outlets 16 one by one, and the air inlet side of each transition air passage 41 corresponds to each unit cavity 43 one by one.

The second output side of the regulating seat 40 is provided with a mixing cavity 44, the mixing cavity 44 is opened at the second output side, and the air outlet seat 50 closes the mixing cavity 44. The air outlet sides of the second group of transition air passages 41 are all communicated to the mixing cavity 44, and are communicated with the second air outlet 512 through the mixing cavity 44. In some embodiments, at least one of the second set of transition ducts is an adjustable duct into which the tuning core 42 extends.

In the present embodiment, the set of transition air passages 41 connected to the mixing chamber 44 includes a plurality of adjustable air passages and at least one fixed air passage, the plurality of adjustable air passages are respectively configured with the adjusting cores 42, and each adjusting core 42 respectively adjusts the adjustable air passage, so that the flow rate adjusting range of the second set of transition air passages is wider.

Wherein, the side of giving vent to anger of adjustable air flue opens the lateral wall of putting into mixing chamber 44, and the side of giving vent to anger of fixed air flue opens the diapire of putting into mixing chamber 44. The fixed air passages are a first transition air passage 411, a second transition air passage 412, a third transition air passage 413 and an eighth transition air passage 418, and the adjustable air passages are as follows: a fourth transition duct 414, a fifth transition duct 415, a sixth transition duct 416, and a seventh transition duct 417.

The adjustable air passage comprises two unit sections 419 which are communicated with each other and are respectively a first unit section and a second unit section, wherein the first unit section is communicated with the unit cavity 43, and the second unit section is communicated with the mixing cavity 44; the adjustment core 42 extends to the junction of the two unit segments 419. Wherein, the two unit sections 418 are both straight lines, and the extending paths of the two unit sections 418 are vertically arranged.

The adjusting core 42 is rod-shaped, the adjusting seat 40 has an adjusting hole 46 for the adjusting core 42 to pass through and be in threaded fit with the adjusting core 42, and the extension path of the first unit segment is the same as that of the adjusting hole 46. The operation end 421 can be operated to screw the working section 322 in and out of the two unit sections, so as to adjust the flow of the adjustable air passage.

The inner wall of the adjusting hole 46 is provided with a limiting step 47, the side wall of the adjusting core 42 is provided with a convex ring 423 matched with the limiting step 47 in a step mode, and the convex ring 423 is matched with the limiting step 47 to limit the limiting position of the adjusting core 42 in the adjusting hole 46.

In the present embodiment, the operation ends 421 of all the adjustment cores 42 are located on the same side of the adjustment seat 40, so as to facilitate the adjustment of the adjustment cores 42. All the adjusting cores 42 are arranged at intervals in turn in the circumferential direction of the mixing chamber 44. Wherein, one side of the adjusting seat 40 having the adjusting core 42 is a mounting surface, both ends of the mounting surface along the circumferential direction of the mixing cavity 44 have step surfaces, and the adjusting cores 42 extending into the fourth transition air passage 414 and the seventh transition air passage 417 are respectively at corresponding step surfaces, so that the structure of the adjusting seat 40 is more compact.

All possible combinations of the technical features in the above embodiments may not be described for the sake of brevity, but should be considered as being within the scope of the present disclosure as long as there is no contradiction between the combinations of the technical features. When technical features in different embodiments are represented in the same drawing, it can be seen that the drawing also discloses a combination of the embodiments concerned.

The above examples only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application.

Claims (8)

1. Gas valve, including the valve body, its characterized in that, the valve body includes:

the air distribution chamber is internally provided with an air distribution chamber, the air distribution chamber is provided with an air inlet communicated with the air distribution chamber and a plurality of air distribution chamber outlets, and the plurality of air distribution chamber outlets are distributed on the first output side of the air distribution chamber;

the adjusting disc is rotatably arranged in the air distribution cavity, is provided with an air passing hole and communicates the air inlet with the outlet of the corresponding air distribution chamber through the air passing hole when rotating to a preset angle;

the valve rod is rotatably arranged in the air distribution chamber and extends into the air distribution cavity, and the adjusting disc is connected with and follows the valve rod;

the adjusting seat is buckled on the first output side of the gas distribution chamber, a transition air passage is formed in the adjusting seat, the transition air passage is provided with a gas inlet side communicated with the outlet of the corresponding gas distribution chamber and an opposite gas outlet side, an adjusting core is installed on the adjusting seat in a threaded mode, one end of the adjusting core is an operating end exposed to the adjusting seat, and the other end of the adjusting core is a working end extending into the corresponding transition air passage to change the gas flow;

the air outlet seat is buckled on the adjusting seat, an air outlet is formed in the air outlet seat, and the air outlet is communicated with the air outlet side of the transition air passage;

the adjusting seat is provided with a second input side facing the air distribution chamber and a second output side facing the air outlet seat;

the number of the air outlets on the air outlet seat is two, the transitional air passages are multiple and divided into two groups, and each group is respectively communicated with one corresponding air outlet;

the second input side of the adjusting seat is provided with a plurality of unit cavities which are isolated from each other, each unit cavity corresponds to the outlet of the air distribution chamber one by one, and the air inlet side of each transition air passage corresponds to each unit cavity one by one;

the second output side of the adjusting seat is provided with a mixing cavity, and the gas outlet sides of one group of transition gas passages are communicated to the mixing cavity and communicated with the corresponding gas outlets through the mixing cavity;

and at least one of the transition air passages communicated to the mixing cavity is an adjustable air passage, and the adjusting core extends into the adjustable air passage.

2. A gas valve as claimed in claim 1, wherein the gas distribution chamber comprises an end cap and a gas distribution seat which are fastened to each other, the end cap and the gas distribution seat enclose the gas distribution chamber, the gas inlet is arranged on the gas distribution seat, and a first solenoid valve for controlling the gas inlet is arranged on the gas distribution seat.

3. The gas valve as claimed in claim 1, wherein the group of transition ducts connected to the mixing chamber includes a plurality of adjustable ducts and at least one fixed duct, the adjustable ducts are respectively provided with the adjusting core, and the operating end of the adjusting core is located on the same side of the adjusting seat.

4. A gas valve as claimed in claim 3, wherein the regulating wicks are circumferentially spaced one after the other in the mixing chamber.

5. A gas valve as claimed in claim 1, wherein the unit chamber is open at the second input side, and the outer edge of the open side of the unit chamber encloses a corresponding gas distribution chamber outlet and abuts the first output side of the gas distribution chamber.

6. A gas valve as claimed in claim 1, wherein the mixing chamber is open to the second output side and the outlet seat closes the mixing chamber.

7. A gas valve as claimed in claim 1, wherein the adjustable gas passage comprises two unit sections communicating with each other, one of the unit sections communicating with the unit chamber and the other unit section opening to a side wall of the mixing chamber and communicating with the mixing chamber;

the adjusting core extends to the joint of the two unit sections.

8. The gas valve as claimed in claim 1 or 7, wherein the regulating core is rod-shaped, and the regulating seat is provided with a regulating hole for the regulating core to pass through and be in threaded fit with;

the inner wall of the adjusting hole is provided with a limiting step, the side wall of the adjusting core is provided with a boss matched with the limiting step, and the boss is matched with the limiting step to limit the limiting position of the adjusting core in the adjusting hole.

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