CN107339488B - Gas regulating valve - Google Patents

Gas regulating valve Download PDF

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Publication number
CN107339488B
CN107339488B CN201710222381.1A CN201710222381A CN107339488B CN 107339488 B CN107339488 B CN 107339488B CN 201710222381 A CN201710222381 A CN 201710222381A CN 107339488 B CN107339488 B CN 107339488B
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China
Prior art keywords
valve
air inlet
hole
air outlet
valve core
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CN201710222381.1A
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Chinese (zh)
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CN107339488A (en
Inventor
严力峰
钟健
郑军妹
茅忠群
诸永定
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Ningbo Fotile Kitchen Ware Co Ltd
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Ningbo Fotile Kitchen Ware Co Ltd
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Priority to CN201710222381.1A priority Critical patent/CN107339488B/en
Publication of CN107339488A publication Critical patent/CN107339488A/en
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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
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
    • F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
    • F16K31/0603—Multiple-way valves
    • F16K31/0624—Lift valves
    • F16K31/0627—Lift valves with movable valve member positioned between seats
    • 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
    • F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
    • F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
    • F16K11/04—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only lift valves
    • F16K11/044—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only lift valves with movable valve members positioned between valve seats
    • 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
    • F16K27/02—Construction of housing; Use of materials therefor of lift valves
    • F16K27/0263—Construction of housing; Use of materials therefor of lift valves multiple way valves
    • 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
    • F16K27/12—Covers for housings
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/30—Use of alternative fuels, e.g. biofuels

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lift Valve (AREA)

Abstract

The utility model provides a gas regulating valve, includes valve body, case, solenoid valve, ejector pin, needle, valve rod and positioning sleeve, and positioning sleeve locates the appearance gas cavity of aforementioned valve body and the cover is located aforementioned needle periphery, and this positioning sleeve's top and bottom are equipped with respectively and hold tightly in first sealing washer and the second sealing washer of needle periphery, its characterized in that the air vent has been seted up on positioning sleeve's the face of cylinder, and, have the clearance that the gas that supplies flows between positioning sleeve's inner wall and the outer wall of needle. The setting of the vent hole of the positioning sleeve guarantees that the internal pressure and the external pressure are balanced, the positioning sleeve cannot tightly hold the valve needle due to the vacuum state of the inner wall, and therefore the valve needle cannot drive the valve core to move upwards when floating upwards, and the air tightness between the valve core and the valve body is guaranteed.

Description

Gas regulating valve
Technical Field
The invention relates to a valve, in particular to a valve applied to a gas stove.
Background
The gas valves in various gas cooking utensils are manually operated valves for controlling the supply of gas source. Domestic gas cooking utensils generally have interior ring fire and outer ring fire, ordinary binary channels gas valve generally has inlet channel including inside, the valve body of inner ring air outlet channel and outer ring air outlet channel, be equipped with the case that can rotate in the valve body, the case lower part is equipped with the chamber of ventilating, wear to be equipped with on the valve body and drive the rotatory valve rod of case, the valve rod can drive the case and rotate together, it adjusts the fire hole to open the series of not of uniform size that is used for communicateing inlet channel and outer ring air outlet channel on the chamber lateral wall of ventilating of case, and be curved inner ring fire hole for communicateing inlet channel and inner ring air outlet channel.
When the gas source is used, the end parts of the inner ring gas outlet channel and the outer ring gas outlet channel of the valve body are connected with the nozzle for use, the inner ring gas outlet channel is finally communicated with the inner ring part of the cooker, the outer ring gas outlet channel is finally communicated with the outer ring part of the cooker, a user can operate the valve rod through the knob arranged on the operation panel, generally, the knob is pressed and rotates anticlockwise firstly, the valve core can be driven to rotate anticlockwise, the large fire hole and the arc-shaped notch in the valve core are communicated with the gas inlet channel in the valve body, the gas source enters from the gas inlet channel and then is divided into two independent paths, one path is communicated with the outer ring gas outlet channel through the vent cavity and the adjusting fire hole, and the other path is communicated with the inner ring gas outlet channel through the vent cavity and the inner ring fire hole.
When the fire is adjusted, the knob is only needed to be rotated to drive the valve core to rotate, the series of adjusting fire holes with different apertures are communicated with the outer ring air outlet channel to adjust the fire of the outer ring fire, and the inner ring fire still keeps on firing when the outer ring fire is adjusted to be zero. In the rotation process of the valve core, the aperture size of the inner ring fire hole is always unchanged, namely the fire behavior of the inner ring fire cannot be adjusted. When eggs are fried or pancake is spread by using small fire, the fire of the outer ring fire is reduced, the fire of the inner ring fire is still high, and the middle part of the fried eggs or pancake is easy to be burnt, so that the quality of food is influenced.
The big fire hole and the little fire hole on its case perisporium set up along circumference interval, the angular dimension that interval distance and knob can rotate at regulation intensity of a fire size in-process is relevant, just because big fire hole and little fire hole set up along circumference interval, the case no matter is clockwise or anticlockwise rotation, adjust to little fire from big fire, or adjust to big fire from little fire and all have a neutral position, this neutral position is the case perisporium between big fire hole and the little fire hole promptly, because of the design defect of current case. In the prior art, in the rotating process of the valve core, the flow rate does not change linearly when coming out, and particularly in the transition stage from big fire to small fire, the flow rate changes not linearly and proportionally, so that unbalanced and nonlinear characteristics can be presented.
The actual user feels that the fire power changes suddenly when the fire is switched from big fire to small fire, or the fire power does not change, and the fire power suddenly changes when the fire is switched from small fire. The defects of unstable adjustment and easy flameout exist in the process of adjusting the big fire and the small fire, and a lot of inconvenience is brought to the actual use.
Therefore, the skilled person in the art makes efforts to disclose several linear flow gas valves, such as the chinese patent No. ZL201310388568.0, a linear flow cock gas valve (grant publication No. CN 103423480B); for example, the invention patent of Chinese patent ZL201310328453.2, which is entitled "adjusting valve capable of linearly adjusting firepower" (No. CN 103438245B). Similarly, reference may also be made to CN105715818A, CN105650306a, etc.
The fire power is adjusted according to the size of the cross surface between the circular hole on the valve core and the air outlet channels of the inner ring and the outer ring in the valve body in the disclosed technology. Such designs suffer from the following disadvantages:
firstly, in the rotating process, the mutation of the area of the cross surface is very obvious, so that the effective angle of the small fire is adjusted to the large fire of the outer ring of the existing gas valve even is less than 15 degrees, and the user can hardly adjust the needed firepower quickly and conveniently.
Second, the air output of the inner and outer rings of the valve body is adjusted by separate holes on the valve core and corresponding valve body channels, so that the air output of the inner and outer rings is independent and irrelevant. The firepower of the gas valve is difficult to change synchronously in design, and in order to continue the condition that the inner ring is the maximum fire when the outer ring is closed, the firepower of the inner ring is always relatively large when the current gas valve is closed from 90 degrees anticlockwise to the outer ring. This causes the user to find that the firepower is not uniform when using, and the middle of the fried egg or the spread cake is easy to be burnt, which affects the delicacy and beauty of the food.
Thirdly, the structure of the current gas valve can not meet the requirements of some commonly used firepower adjusting functions, for example, a firepower section which can be adjusted well cannot exist, the internal and external firepower are synchronous and small, the total power is unchanged in a small angle range, a user can spread cakes, fry eggs and cook soup conveniently, and the firepower section can be adjusted very easily.
The applicant discloses a gas valve in advance, and the gas valve is disclosed in the patent number ZL201210048952.1 of Chinese invention patent gas stove valve (with the publication number CN 102588665B), a positioning sleeve is additionally arranged in the patent, a first sealing ring and a second sealing ring which are tightly held on the periphery of a valve needle are further respectively arranged at the top end and the bottom end of the positioning sleeve, and the positioning sleeve has one function, so that the coaxiality of the valve needle and a valve core can be improved, the shaking amount of the valve needle is reduced, and the durability of the valve body is improved; secondly, the sealing ring is pressed tightly, so that the sealing ring and the bottom of the valve needle realize good sealing performance; and thirdly, the valve core is pressed, so that good sealing performance is formed between the whole valve core and the valve cavity of the valve body. But the following disadvantages exist in the practical use process: because both ends are airtight about the locating sleeve, in the use, the air can be crowded gradually and fall between locating sleeve and the needle, just forms the vacuum between locating sleeve and the needle like this, under the sealing washer effect, can arouse the locating sleeve to hold the needle tightly, whole case just is driven upwards by the needle and floats like this, will produce gas leakage between case and the valve body, and the wearing and tearing between case and the valve body also can accelerate, from the stability that influences whole gas valve.
Disclosure of Invention
The invention aims to provide a gas regulating valve which is characterized in that a positioning sleeve can not float upwards along with a valve needle in view of the technical current situation.
In view of the above-mentioned technical situation, another object of the present invention is to provide a gas control valve with a relatively gentle fluctuation in intake air amount change.
The invention aims to solve the technical problem of providing a gas regulating valve which can synchronously reduce the gas output of the inner ring and the outer ring.
The present invention provides a gas regulating valve, which can synchronously reduce the gas output of the inner ring and the outer ring and basically maintain the combustion load unchanged.
The invention aims to solve the technical problem of providing a gas regulating valve with large linear change angle of the gas output of the inner ring and the outer ring and wide regulating range aiming at the technical current situation.
The technical scheme adopted by the invention for solving the technical problems is as follows: a gas regulating valve comprises
The valve body is provided with a valve cavity, at least an air inlet channel, an outer ring air outlet channel and an inner ring air outlet channel which are communicated with the valve cavity are arranged on the valve body, and air outlet holes, an outer ring air inlet hole and an inner ring air inlet hole are respectively formed on the side wall of the valve cavity of the air inlet channel, the outer ring air outlet channel and the inner ring air outlet channel;
the valve core can be rotatably arranged in the valve cavity of the valve body and can adjust the flow of the air outlet channel of the inner ring of the air outlet channel of the outer ring, the middle part of the valve core is provided with an air containing cavity, the side wall of the valve core is provided with an adjusting fire hole communicated with the air containing cavity, and the adjusting fire hole is matched with the air outlet channel of the outer ring and the air outlet channel of the inner ring to adjust the air outlet flow;
the electromagnetic valve is arranged on the valve body;
the push rod can be rotatably arranged in the valve body, one end of the push rod is abutted against the electromagnetic valve, and the other end of the push rod forms a convex block;
the valve needle is inserted into the valve core, the bottom end of the valve needle can abut against the convex block of the ejector rod, and the length direction of the valve needle is vertical to that of the ejector rod;
a valve rod which is arranged above the valve needle, extends out of the valve body from the upper end of the valve needle and enables the electromagnetic valve to be opened through the valve needle and the ejector rod in the pressing process;
a first spring disposed in the valve element, the upper end of the first spring abutting against the lower bottom surface of the valve rod, and the lower end of the first spring abutting against the upper end surface of the valve rod; and
a positioning sleeve which is arranged in the air accommodating cavity of the valve body and is sleeved on the periphery of the valve needle, a first sealing ring and a second sealing ring which are tightly held on the periphery of the valve needle are respectively arranged at the top end and the bottom end of the positioning sleeve,
the valve needle positioning device is characterized in that the cylindrical surface of the positioning sleeve is provided with a vent hole, and a gap for gas to flow is formed between the inner wall of the positioning sleeve and the outer wall of the valve needle.
The valve core is positioned at the upper end of the air accommodating cavity and is provided with an installation cavity, a second spring is arranged in the installation cavity, the upper end of the second spring is abutted against the lower end face of the valve rod, and the lower end of the second spring acts on the upper end face of the valve core. The upper end of the valve needle is provided with a convex ring, a third spring is arranged in the mounting cavity and positioned in the inner ring of the second spring, the upper end of the third spring is abutted against the lower end face of the convex ring, and the lower end of the third spring acts on the upper end face of the valve core. The second spring and the third spring can press the valve core, and the valve core is further prevented from floating upwards in the using process.
Further, a gasket is arranged at the bottom of the installation cavity, and the bottom ends of the second spring and the third spring are abutted against the upper end face of the gasket so as to act on the upper end face of the valve core.
The vent holes are two and are oppositely arranged. This can increase the internal gas flow.
Furthermore, a cover plate for covering the valve cavity is arranged on the valve body, and the valve rod extends upwards out of the cover plate and is assembled with the cover plate in a sealing mode.
The side wall of the valve core is provided with a first air inlet hole and a second air inlet hole, the first air inlet hole and the second air inlet hole can be matched with the air outlet hole to change the air inflow entering the air containing cavity, and the aperture of the first air inlet hole is larger than that of the second air inlet hole; the adjusting fire holes comprise first fire holes opposite to the air inlet holes of the outer ring and second fire holes opposite to the air inlet holes of the inner ring.
The air outlet quantities of the inner ring and the outer ring of the valve body are obtained through the first air inlet hole or the second air inlet hole, so that the air inlet quantities of the inner ring and the outer ring can be synchronously increased and reduced, the firepower of the valve body can be synchronously changed, the whole valve body is uniformly heated, and the phenomena of nonuniform firepower and scorching are avoided; and because the aperture of the second air inlet hole is smaller than that of the first air inlet hole, the inner ring can be gradually enlarged and the outer ring can be gradually closed after the inner ring and the outer ring are in synchronization with each other and small fire can be realized by combining the matching of the first fire hole and the auxiliary air inlet hole.
The fire power section which is well adjusted can be achieved, the internal and external fire powers are synchronous and small, the total power is unchanged in a small angle range, a user can conveniently spread cakes, fry eggs and cook soup, and the fire power section is very easy to adjust.
Furthermore, an auxiliary air outlet channel communicated with the inner ring air outlet channel is formed in the valve body, an auxiliary air inlet hole is formed in the valve cavity of the auxiliary air outlet channel, and the first fire hole can be communicated with the auxiliary air inlet hole to supply air to the auxiliary air outlet channel. Thus, the first fire hole can supply air to the inner ring at the same time.
Furthermore, the valve body is provided with an adjusting screw, and the inner end of the adjusting screw extends into the auxiliary air outlet channel and can adjust the air inflow of the auxiliary air outlet channel.
Further, when the valve core is in an initial state, the first air inlet hole and the second air inlet hole of the valve core are blocked by the air outlet hole of the air inlet channel;
when the valve core rotates to a first angle, a first air inlet of the valve core is communicated with an air outlet of the air inlet channel, a first fire hole and a second fire hole of the valve core are respectively communicated with an outer ring air inlet and an inner ring air inlet, and the air outlet amount of the outer ring air outlet channel and the inner ring air outlet channel is gradually increased;
when the valve core rotates to a second angle, a second air inlet hole of the valve core is communicated with an air outlet hole of the air inlet channel, and a first fire hole and a second fire hole of the valve core are respectively communicated with an outer ring air inlet hole and an inner ring air inlet hole;
and in the process that the valve core rotates to a third angle, the second air inlet hole of the valve core is communicated with the air outlet hole of the air inlet channel, and the first fire hole of the valve core is communicated with the auxiliary air inlet hole.
And in the process that the valve core rotates to a fourth angle, the second air inlet hole of the valve core is communicated with the air outlet hole of the air inlet channel, the air inflow of the first fire hole and the air inlet hole of the outer ring of the valve core is gradually reduced, and the air inflow of the second fire hole and the air inlet hole of the inner ring is gradually increased.
The second air inlet hole is provided with an inward-concave step on the outer side wall of the valve core, and the caliber of the step is larger than that of the second air inlet hole. The diameter size through this step can control the load value of the synchronous small fire of interior outer ring and the maximum value of small fire, simultaneously, can link up the switching of interior outer ring firepower well, in addition, when adjusting the firepower, can have the angle range of a synchronous minimum fire, and convenience of customers can conveniently switch to.
And an air guide groove is formed on the outer side wall of the valve core, and one end of the air guide groove is communicated with the second fire hole. The air guide groove can meet the requirement of maintaining the firepower of the inner ring, and further, the air guide groove is arranged in an arc shape.
Further, the aperture of the first air inlet hole is larger than that of the first fire hole, and the angle formed by the intersection of the central axis of the first air inlet hole and the central axis of the first fire hole is 90-225 degrees, and 180 degrees is the best.
The air outlet is arranged on the inner wall of the valve cavity along the rotation direction of the valve core in a strip shape. The strip-shaped air outlet hole is matched with the first air inlet hole and the second air inlet hole of the valve core, so that the change of air inflow is not obvious and mild, and a user can adjust to a proper combustion load value in a short time.
Compared with the prior art, the invention has the advantages that: the setting of the vent hole of the positioning sleeve guarantees that the internal pressure and the external pressure are balanced, the positioning sleeve cannot tightly hold the valve needle due to the fact that the inner wall is in a vacuum state, the valve needle cannot be driven to move upwards when floating upwards, airtightness between the valve core and the valve body is guaranteed, and stability of the whole gas regulating valve can be greatly improved.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment.
Fig. 2 is a perspective sectional view of the embodiment.
FIG. 3 is a perspective cross-sectional view of another perspective of the embodiment.
Fig. 4 is a schematic view of the body structure.
Fig. 5 is another view structure diagram of the main body.
Fig. 6 is an enlarged schematic view of the valve cartridge.
Fig. 7 is an enlarged view of the valve cartridge from another perspective.
Fig. 8 is an enlarged view of the positioning sleeve in the embodiment.
Fig. 9 is a partially enlarged perspective view of fig. 3.
Fig. 10 is a partially exploded view of fig. 9.
Fig. 11 is an intake air amount change map of the embodiment.
Fig. 12 is a graph showing the change of the intake air amount of the gas regulating valve in the prior art.
Detailed Description
The invention is described in further detail below with reference to the accompanying examples.
As shown in fig. 1, 2 and 3, the gas regulating valve includes a valve body 100, a valve core 2, a valve needle 4, a valve rod 3, a cover plate 6, an electromagnetic valve 71 and a push rod 7, and as shown in fig. 4 and 5, the valve body 100 has a valve cavity 11, an air inlet channel 16, an outer ring air outlet channel 18, an inner ring air outlet channel 17 and an auxiliary air outlet channel 19 which are communicated with the valve cavity 11 are arranged in the valve body 100, and the air inlet channel 16, the outer ring air outlet channel 18, the inner ring air outlet channel 17 and the auxiliary air outlet channel 19 are respectively formed with an air outlet hole 12, an outer ring air inlet hole 14, an inner ring air inlet hole 15 and an auxiliary air inlet hole 13 on the side wall of the valve cavity 11. The central axis of the outer ring air intake hole 14 and the central axis of the auxiliary air intake hole 13 are located on the same plane. The central axis of the outer ring air inlet hole 14 and the central axis of the inner ring air outlet hole 12 are positioned in the same vertical direction.
The valve body 100 in this embodiment is assembled from a body 1 and a bottom plate 1a provided below the body 1. The air outlet 12 is arranged on the inner wall of the valve cavity 11 along the rotation direction of the valve core 2 in a strip shape. Therefore, the angle range of air inflow adjustment can be achieved, the air inflow of the valve body is effectively prevented from being suddenly changed, and the linear change of the air flow of the valve body is excellently controlled. The air outlet 12 in this embodiment is similar to a match (see fig. 2), but may be designed as a waist-shaped hole lying flat or a trapezoid lying flat (with a transverse length greater than a longitudinal height).
Referring to fig. 6 and 7, the valve core 2 is rotatably disposed in the valve cavity 11 of the valve body 100 and can adjust the flow rate of the outer ring air outlet channel 18 and the inner ring air outlet channel 17, the middle of the valve core 2 has an air containing cavity 25, the sidewall of the valve core is provided with an adjusting fire hole communicated with the air containing cavity 25, and the adjusting fire hole cooperates with the outer ring air outlet channel 18 and the inner ring air outlet channel 17 to adjust the air outlet flow rate.
The side wall of the valve core 2 is provided with a first air inlet hole 21 and a second air inlet hole 22, the first air inlet hole 21 and the second air inlet hole 22 can be matched with the air outlet hole 12 to change the air inflow entering the air containing cavity 25, and the aperture of the first air inlet hole 21 is larger than that of the second air inlet hole 22; the adjusting fire holes comprise first fire holes 23 opposite to the outer ring air inlet holes 14 and second fire holes 24 opposite to the inner ring air inlet holes 15.
The second air inlet hole 22 is formed with an inward step 221 on the outer side wall of the valve core 2, and the caliber of the step 221 is larger than that of the second air inlet hole 22. The load value of the synchronous small fire of the inner ring and the outer ring and the maximum value of the small fire can be controlled through the diameter of the step, meanwhile, the firepower switching of the inner ring and the outer ring can be well connected, in addition, when the firepower is adjusted, the angle range of the synchronous small fire can be provided, and a user can conveniently switch the firepower.
An air guide groove 241 is formed on the outer side wall of the valve core 2, one end of the air guide groove 241 is communicated with the second fire hole 24, and the air guide groove 241 is arranged in an arc shape. The aperture of the first air inlet hole 21 is larger than that of the first fire hole 23, and the angle of intersection of the central axis of the first air inlet hole 21 and the central axis of the first fire hole 23 is 180 degrees. The intersecting angle of the central axis of the first air inlet hole 21 and the central axis of the second air inlet hole 22 is 90 degrees, and the central axis of the first fire hole 23 and the central axis of the second fire hole 24 are positioned in the same vertical direction.
In order to provide good sealing between the valve core 2 and the valve chamber 11, the valve core 2 is generally in a tapered shape with a wide top and a narrow bottom. And the inner wall of the valve cavity 11 is in conical surface fit.
Referring to fig. 3, the auxiliary air outlet channel 19 is communicated with the inner ring air outlet channel 17 through an adjusting screw 191, the inner end of the adjusting screw extends into the auxiliary air outlet channel 19 and can adjust the air input of the auxiliary air outlet channel 19, and the first fire hole 23 can be communicated with the auxiliary air inlet 13 to supply air to the auxiliary air outlet channel 19. The amount of air taken in the auxiliary air outlet passage 19 can be achieved by the adjusting screw 191.
As shown in fig. 3, 8, 9 and 10, the solenoid valve 71 is provided on the valve body 10; the mandril 7 is rotatably arranged in the valve body 10, one end of the mandril is abutted against the electromagnetic valve 71, and the other end of the mandril forms a convex block 72; the valve needle 4 is inserted into the valve core 2, the bottom end of the valve needle can be abutted against the convex block 72 of the ejector rod 7, and the length direction of the valve needle 4 is vertical to that of the ejector rod 7;
the valve rod 3 is arranged above the valve needle 4, extends out of the valve body 10 together with the valve needle 4 and is provided with an upper end, the valve rod 3 can be rotated under a pressing-down state to be communicated with a gas pipeline, and the valve rod 3 enables the electromagnetic valve 71 to be opened through the valve needle 4 and the ejector rod 7 in the pressing-down process; the valve body 10 is provided with a cover plate 6 which covers the valve cavity, and the valve rod 3 extends upwards out of the cover plate 6 and is assembled with the cover plate 6 in a sealing way.
The first spring 81 is arranged in the valve core 2, the upper end of the first spring is abutted against the lower bottom surface of the valve rod 3, and the lower end of the first spring is abutted against the upper end surface of the valve needle 4, so that the first spring plays a role in preventing flameout after hand loosening.
The positioning sleeve 42 is disposed in the air accommodating cavity of the valve body 10 and sleeved on the outer periphery of the valve needle 4, the top end and the bottom end of the positioning sleeve 42 are respectively provided with a first sealing ring 52 and a second sealing ring 51 which tightly hold the outer periphery of the valve needle 4, the cylindrical surface of the positioning sleeve 42 is provided with a vent hole 421, and a gap for air to flow is formed between the inner wall of the positioning sleeve 42 and the outer wall of the valve needle 4. The positioning sleeve 42 has three functions, one of which is that the coaxiality of the valve needle 4 and the valve core 2 can be improved, the shaking amount of the valve needle is reduced, and the durability of the valve body 10 is improved; secondly, the first sealing ring 52 and the second sealing ring 51 are pressed tightly, so that the first sealing ring 52, the second sealing ring 51 and the valve needle 4 realize good sealing performance; thirdly, the valve core 2 is pressed, so that good sealing performance is formed between the whole valve core 2 and the valve cavity of the valve body 10.
The setting of the air vent 421 of the positioning sleeve 42 guarantees that the internal pressure and the external pressure are balanced, the positioning sleeve 42 cannot tightly hold the valve needle 4 due to the vacuum state on the inner wall, so that the valve needle 4 cannot drive the valve core 2 to move upwards when floating upwards, the air tightness between the valve core 2 and the valve body 10 is ensured, and the stability of the whole gas regulating valve can be greatly improved. The vent holes 421 in this embodiment are two and arranged oppositely.
The valve core 2 is provided with a mounting cavity 27 at the upper end of the air containing cavity, a second spring 82 is arranged in the mounting cavity 27, the upper end of the second spring 82 is abutted against the lower end face of the valve rod 3, and the lower end of the second spring acts on the upper end face of the valve core 2. The upper end of the valve needle 4 is provided with a convex ring 44, a third spring 83 is arranged in the mounting cavity 27 and positioned at the inner ring of the second spring 82, the upper end of the third spring 83 is abutted against the lower end surface of the convex ring 44, and the lower end of the third spring acts on the upper end surface of the valve core 2. The bottom of the mounting cavity 27 is provided with a gasket 84, and the bottom ends of the second spring 82 and the third spring 83 are respectively abutted against the upper end face of the gasket 84 so as to act on the upper end face of the valve core 2.
The top end of the valve core 2 is provided with a vertical groove 26 with an upward port, the valve rod 3 is provided with a pin shaft 31, the pin shaft 31 is positioned below the cover plate 6 and is arranged in the vertical groove 26 of the valve core 2, and thus the valve rod 3 rotates to drive the valve core 2 to rotate together.
Referring to fig. 11, the abscissa of the drawing represents the rotation angle of the spool. When the valve core 2 is in an initial state, the first air inlet hole 21 and the second air inlet hole 22 of the valve core 2 are blocked with the air outlet hole 12 of the air inlet channel 16; a user presses the valve rod 3 to drive the valve needle 4 to be pressed down, the ejector rod 7 jacks the electromagnetic valve 71 to be opened and closed, gas enters from the gas inlet channel 16, and the valve rod 3 drives the valve core 2 to rotate.
When the valve core 2 rotates to 64 degrees, the first air inlet hole 21 of the valve core 2 is communicated with the air outlet hole 12 of the air inlet channel 16, the first fire hole 23 and the second fire hole 24 of the valve core 2 are respectively communicated with the outer ring air inlet hole 14 and the inner ring air inlet hole 15, and the air outlet amount of the outer ring air outlet channel 18 and the inner ring air outlet channel 17 is synchronously and gradually increased.
When the valve core 2 rotates to 98 degrees, the first air inlet hole 21 of the valve core 2 is communicated with the air outlet hole 12 of the air inlet channel 16, the first fire hole 23 and the second fire hole 24 of the valve core 2 are respectively communicated with the outer ring air inlet hole 14 and the inner ring air inlet hole 15, and the air outlet amount of the outer ring air outlet channel 18 and the inner ring air outlet channel 17 reaches the maximum value.
In the process that the valve core 2 rotates to 153 degrees, the second air inlet hole 22 of the valve core 2 is communicated with the air outlet hole 12 of the air inlet channel 16, the first fire hole 23 and the second fire hole 24 of the valve core 2 are respectively communicated with the outer ring air inlet hole 14 and the inner ring air inlet hole 15, and the air outlet amount of the outer ring air outlet channel 18 and the inner ring air outlet channel 17 is synchronously and gradually reduced.
When the valve core 2 rotates to 162 degrees, the first fire hole 23 and the second fire hole 24 of the valve core 2 are respectively communicated with the outer ring air inlet hole 14 and the inner ring air inlet hole 15, the air outlet quantity of the outer ring air outlet channel 18 is reduced, the air outlet quantity of the inner ring air outlet channel 17 is synchronously and gradually increased, and the total combustion load is basically unchanged.
When the valve core 2 rotates to 180 degrees, the first fire hole 23 is closed, the second air inlet hole 22 of the valve core 2 is communicated with the air outlet hole 12 of the air inlet channel 16, the first fire hole 23 of the valve core 2 is communicated with the auxiliary air inlet hole 13, and the air outlet amount of the inner ring air outlet channel 17 is kept stable.
Fig. 12 is a flow chart of a gas regulating valve commonly used in the prior art. The comparison can know that the current gas regulating valve flow mutability is more obvious, and the follow-up basically not change of inner ring gas flow, can not reduce with outer ring gas flow is synchronous, and the gas regulating valve adjustable range in this embodiment is wider, and inner and outer ring gas flow synchronism and linear change are more superior.

Claims (11)

1. A gas regulating valve comprises
The valve body (10) is provided with a valve cavity (11), the valve body (10) is at least provided with an air inlet channel (16), an outer ring air outlet channel (18) and an inner ring air outlet channel (17) which are communicated with the valve cavity (11), and the air inlet channel (16), the outer ring air outlet channel (18) and the inner ring air outlet channel (17) are respectively provided with an air outlet hole (12), an outer ring air inlet hole (14) and an inner ring air inlet hole (15) on the side wall of the valve cavity (11);
the valve core (2) can be rotatably arranged in the valve cavity (11) of the valve body (10) and can adjust the flow of the inner ring air outlet channel (17) of the outer ring air outlet channel (18), the middle part of the valve core (2) is provided with an air containing cavity (25), the side wall of the valve core is provided with an adjusting fire hole communicated with the air containing cavity (25), and the adjusting fire hole is matched with the outer ring air outlet channel (18) and the inner ring air outlet channel (17) to adjust the air outlet flow;
an electromagnetic valve (71) provided on the valve body (10);
a push rod (7) which is rotatably arranged in the valve body (10), one end of the push rod is propped against the electromagnetic valve (71), and the other end of the push rod forms a convex block (72);
the valve needle (4) is inserted into the valve core (2), the bottom end of the valve needle can be abutted against the convex block (72) of the ejector rod (7), and the length direction of the valve needle (4) is vertical to the length direction of the ejector rod (7);
a valve rod (3) which is arranged above the valve needle (4), the upper end of the valve rod extends out of the valve body (10), and the valve rod (3) opens the electromagnetic valve (71) through the valve needle (4) and the ejector rod (7) in the pressing process;
a first spring (810) which is provided in the valve element (2), and has an upper end abutting against a lower bottom surface of the valve rod (3) and a lower end abutting against an upper end surface of the valve needle (4); and
a positioning sleeve (42) which is arranged in the air containing cavity (25) of the valve body (10) and is sleeved on the periphery of the valve needle (4), a first sealing ring (52) and a second sealing ring (51) which are tightly held on the periphery of the valve needle (4) are respectively arranged at the top end and the bottom end of the positioning sleeve (42),
the gas-liquid separation valve is characterized in that a vent hole (421) is formed in the cylindrical surface of the positioning sleeve (42), and a gap for gas to flow is formed between the inner wall of the positioning sleeve (42) and the outer wall of the valve needle (4);
the valve core (2) is positioned at the upper end of the air accommodating cavity (25) and is provided with an installation cavity (27), a second spring (82) is arranged in the installation cavity (27), the upper end of the second spring (82) is abutted against the lower end face of the valve rod (3), and the lower end of the second spring acts on the upper end face of the valve core (2);
the valve body (10) is provided with a cover plate (6) covering the valve cavity, and the valve rod (3) extends upwards out of the cover plate (6) and is assembled with the cover plate (6) in a sealing mode.
2. Gas regulating valve according to claim 1, characterized in that the upper end of the valve needle (4) is provided with a convex ring (44), the mounting chamber (27) is internally provided with a third spring (83) at the inner ring of the second spring (82), the upper end of the third spring (83) is abutted against the lower end surface of the convex ring (44), and the lower end of the third spring acts on the upper end surface of the valve core (2).
3. The gas regulating valve according to claim 2, characterized in that a gasket is arranged at the bottom of the mounting cavity (27), and the bottom ends of the second spring (82) and the third spring (83) are abutted against the upper end surface of the gasket so as to act on the upper end surface of the valve core (2).
4. Gas regulating valve according to claim 1, characterized in that the ventilation holes (421) are two and oppositely arranged.
5. The gas regulating valve according to any one of claims 1 to 4, characterized in that a first air inlet (21) and a second air inlet (22) are formed in the side wall of the valve core (2), the first air inlet (21) and the second air inlet (22) can be matched with the air outlet (12) to change the air inflow entering the air containing cavity (25), and the aperture of the first air inlet (21) is larger than that of the second air inlet (22); the adjusting fire holes comprise first fire holes (23) opposite to the outer ring air inlet holes (14) and second fire holes (24) opposite to the inner ring air inlet holes (15).
6. The gas regulating valve according to claim 5, wherein the valve body (10) is provided with an auxiliary gas outlet channel (19) communicated with the inner ring gas outlet channel (17), the auxiliary gas outlet channel (19) forms an auxiliary gas inlet hole (13) on the valve cavity (11), and the first fire hole (23) can be communicated with the auxiliary gas inlet hole (13) to supply gas to the auxiliary gas outlet channel (19).
7. The gas regulating valve according to claim 6, characterized in that the valve body (10) is provided with a regulating screw (191), and the inner end of the regulating screw (191) extends into the auxiliary air outlet channel (19) and can regulate the air inlet amount of the auxiliary air outlet channel (19).
8. Gas regulating valve according to claim 6, characterized in that the first inlet hole (21) and the second inlet hole (22) of the valve cartridge (2) are blocked with the outlet hole (12) of the inlet channel (16) in the initial state of the valve cartridge (2);
in the process that the valve core (2) rotates to a first angle, a first air inlet hole (21) of the valve core (2) is communicated with an air outlet hole (12) of an air inlet channel (16), a first fire hole (23) and a second fire hole (24) of the valve core (2) are respectively communicated with an outer ring air inlet hole (14) and an inner ring air inlet hole (15), and the air outlet amount of the outer ring air outlet channel (18) and the inner ring air outlet channel (17) is gradually increased;
when the valve core (2) rotates to a second angle, a second air inlet hole (22) of the valve core (2) is communicated with an air outlet hole (12) of the air inlet channel (16), and a first fire hole (23) and a second fire hole (24) of the valve core (2) are respectively communicated with an outer ring air inlet hole (14) and an inner ring air inlet hole (15);
and in the process that the valve core (2) rotates to a third angle, a second air inlet hole (22) of the valve core (2) is communicated with an air outlet hole (12) of the air inlet channel (16), and a first fire hole (23) of the valve core (2) is communicated with an auxiliary air inlet hole (13).
9. The gas regulating valve according to claim 8, wherein during the rotation of the valve core (2) to the fourth angle, the second air inlet hole (22) of the valve core (2) is communicated with the air outlet hole (12) of the air inlet channel (16), the air inflow of the first fire hole (23) and the outer ring air inlet hole (14) of the valve core (2) is gradually reduced, and the air inflow of the second fire hole (24) and the inner ring air inlet hole (15) is gradually increased.
10. The gas regulating valve according to claim 5, characterized in that the aperture of the first gas inlet hole (21) is larger than the aperture of the first fire hole (23), and the angle at which the central axis of the first gas inlet hole (21) intersects the central axis of the first fire hole (23) is 90-225 °.
11. Gas regulating valve according to claim 5, characterized in that the outlet opening (12) is arranged in the inner wall of the valve chamber (11) in the direction of rotation of the valve core (2) in the form of a strip, the outlet opening (12) having a transverse length which is greater than the longitudinal height.
CN201710222381.1A 2017-04-07 2017-04-07 Gas regulating valve Active CN107339488B (en)

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CN108679255A (en) * 2018-07-23 2018-10-19 华帝股份有限公司 Plug valve capable of assisting in supplementing flow
CN109237065B (en) * 2018-11-14 2024-06-18 佛山市顺德区美的洗涤电器制造有限公司 Gas plug valve
CN109973675B (en) * 2019-04-22 2020-12-08 佛山市顺德区美的洗涤电器制造有限公司 Gas valve and gas utensil
CN110081204A (en) * 2019-05-10 2019-08-02 付意足 A kind of stopcock structure
CN110159779A (en) * 2019-05-13 2019-08-23 广东长青（集团）股份有限公司 Plug valve

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GB190752A (en) * 1921-08-22 1922-12-22 John Webster Cobb Improvements in gas burners
CN2153727Y (en) * 1993-03-13 1994-01-19 湘潭市新产品开发研究所 Control valve for liquid fuel stove
JP2006258183A (en) * 2005-03-16 2006-09-28 Kuroda Pneumatics Ltd Poppet type direction control valve
CN202023961U (en) * 2011-05-09 2011-11-02 杭州强邦精密机械电器有限公司 Proportional valve with improved structure
CN102588665B (en) * 2012-02-29 2014-03-26 宁波方太厨具有限公司 Valve body for gas stove
CN104344010A (en) * 2013-07-30 2015-02-11 毛孟其 Electromagnetic flow reversing valve
CN203477363U (en) * 2013-08-03 2014-03-12 衢州昀睿工业设计有限公司 Electromagnetic regulating valve
CN206708506U (en) * 2017-04-07 2017-12-05 宁波方太厨具有限公司 Gas control valve

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