CN107339449B - Gas regulating valve with inner and outer ring flow - Google Patents
Gas regulating valve with inner and outer ring flow Download PDFInfo
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- CN107339449B CN107339449B CN201710107594.XA CN201710107594A CN107339449B CN 107339449 B CN107339449 B CN 107339449B CN 201710107594 A CN201710107594 A CN 201710107594A CN 107339449 B CN107339449 B CN 107339449B
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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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/52—Means for additional adjustment of the rate of flow
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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
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
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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
- F16K41/00—Spindle sealings
- F16K41/02—Spindle sealings with stuffing-box ; Sealing rings
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Taps Or Cocks (AREA)
Abstract
The internal and external circulation flow gas regulating valve comprises a valve body and a valve core, wherein the valve core can be rotationally arranged in a valve cavity of the valve body and can regulate the flow of an inner ring gas outlet channel of an outer ring gas outlet channel; the valve is characterized in that a first air inlet hole and a second air inlet hole are formed in the side wall of the valve core, 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 accommodating cavity, and the aperture of the first air inlet hole is larger than that of the second air inlet hole; the adjusting fire hole comprises a first fire hole opposite to the air inlet hole of the outer ring and a second fire hole opposite to the air inlet hole of the inner ring. Compared with the prior art, the invention has the advantages that: the internal and external ring fire can be synchronously regulated to be gradually increased and decreased, the fire regulating range is larger, and the internal and external ring fire is heated more uniformly.
Description
Technical Field
The invention relates to a valve, in particular to a valve applied to a gas stove.
Background
Gas valves in various gas cookers are manually operated valves that control the supply of a gas source. The household gas cooker is generally provided with an inner ring fire and an outer ring fire, the common double-channel gas valve is generally provided with a valve body with an air inlet channel, an inner ring air outlet channel and an outer ring air outlet channel, a rotatable valve core is arranged in the valve body, a vent cavity is arranged at the lower part of the valve core, a valve rod capable of driving the valve core to rotate is arranged on the valve body in a penetrating manner, the valve rod can drive the valve core to rotate together, a series of adjusting fire holes with different sizes for communicating the air inlet channel and the outer ring air outlet channel are formed in the side wall of the vent cavity of the valve core, and the arc inner ring fire holes for communicating the air inlet channel and the inner ring air outlet channel are formed in the side wall of the vent cavity of the valve core.
When the gas-saving stove 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, the inner ring gas outlet channel is finally communicated with the inner ring part in the stove, the outer ring gas outlet channel is finally communicated with the outer ring part in the stove, a user can operate the valve rod through the knob arranged on the operation panel, generally presses the knob firstly and rotates anticlockwise, the valve core can be driven to rotate anticlockwise, the large fire hole and the arc notch on the valve core are communicated with the gas inlet channel in the valve body, the gas source is divided into two independent paths after entering from the gas inlet channel, one path is communicated with the outer ring gas outlet channel through the gas-passing cavity, the regulating fire hole, and the other path is communicated with the inner ring gas outlet channel through the gas-passing cavity and the inner ring fire hole.
When the fire is regulated, only the knob is required to be turned to drive the valve core to rotate, the serial regulating fire holes with different apertures are communicated with the outer ring air outlet channel to realize the fire regulation of the outer ring fire, and the inner ring fire still keeps out fire in the state that the outer ring fire is regulated to zero. In the process of valve core rotation, the aperture size of the inner ring fire hole is unchanged all the time, namely the fire of the inner ring fire cannot be regulated. When the gas stove is used for frying eggs or spreading cakes with small fire, the fire intensity of the outer ring fire is reduced, and the fire intensity of the inner ring fire is still larger, so that the middle part of the fried eggs or the cakes is easy to coke, and the quality of food is affected.
The prior gas valve has the advantages that the big fire hole and the small fire hole on the peripheral wall of the valve core are arranged at intervals along the circumference, the interval distance is related to the rotation angle of the knob in the process of adjusting the fire intensity, the valve core is rotated clockwise or anticlockwise no matter the big fire hole and the small fire hole are arranged at intervals along the circumference, the valve core is adjusted from big fire to small fire or from small fire to big fire, and the neutral position is the peripheral wall of the valve core between the big fire hole and the small fire hole because of the design defect of the prior valve core. In the prior art, in the valve core rotation process, the flow rate does not change linearly, especially in the transition stage from big fire to small fire, the flow rate change is not linear and the proportion is reduced, and the unbalanced and nonlinear characteristics can be possibly presented.
The actual user feel that the fire power change suddenly increases or does not change in the big and small fire switching process and suddenly decreases when the fire is small. The defect of unstable regulation and easy flameout exists in the regulation process of big and small fires, and a lot of inconveniences are brought to practical use.
To this end, efforts have been made by those skilled in the art 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, chinese patent No. ZL201310328453.2, a regulating valve for linear regulating fire (grant publication No. CN 103438245B). Reference may similarly be made to CN105715818A, CN105650306a, etc.
The fire power is regulated by the size of the cross surface between the round hole on the valve core and the inner and outer ring air outlet channels in the valve body. Such designs suffer from the following disadvantages:
first, in the rotation process, the variability of the area of the intersecting surface is very obvious, so that the effective angle of the big fire of the outer ring of the existing gas valve is adjusted to the small fire and even is less than 15 degrees, and the user can hardly and conveniently adjust the fire power required by the user.
Second, the inner and outer ring air outlet of the valve body are regulated by the independent holes on the valve core and the corresponding valve body channels, so that the air outlet of the inner and outer rings is independent and irrelevant. It is difficult to design the synchronous change of the fire power, and in order to continue the closing of the outer ring, the inner ring is at the maximum fire, and the current gas valve starts from 90 degrees anticlockwise to the closing of the outer ring, and the fire power of the inner ring is relatively large all the time. The reason for this is that users find that the firepower is uneven when using, and the firepower is often burnt off easily in the middle when frying eggs or spreading cakes, which affects the delicacy and the beautiful appearance of the food.
Third, the current gas valve structure cannot meet the common firepower fine adjustment function, such as a fine adjustment firepower section, the internal and external ring firepower is synchronous small, the total power is unchanged in a small angle range, the firepower section is convenient for users to spread cakes, fry eggs and cook soup, and the firepower section is very easy to adjust.
Disclosure of Invention
The invention aims to solve the technical problem of providing an internal and external circulation flow gas regulating valve with relatively mild fluctuation of air inflow change aiming at the prior art.
The invention aims to provide an internal and external circulation flow gas regulating valve capable of synchronously reducing the gas outlet quantity of the internal and external rings.
Another technical problem to be solved by the present invention is to provide an internal and external circulation flow gas regulating valve, which can synchronously reduce the gas output of the internal and external rings and maintain the combustion load basically unchanged, aiming at the state of the art.
The invention aims to solve the technical problem of providing the internal and external circulation flow gas regulating valve with wide regulating range of the linear change angle of the internal and external ring gas outlet quantity.
The technical scheme adopted for solving the technical problems is as follows: an internal and external circulation flow 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 internally formed 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;
the valve core is rotatably arranged in the valve cavity of the valve body and can adjust the flow of the inner ring air outlet channel of the outer ring air outlet channel, the middle part of the valve core is provided with an air accommodating cavity, the side wall of the valve core is provided with an adjusting fire hole communicated with the air accommodating cavity, and the adjusting fire hole is matched with the outer ring air outlet channel and the inner ring air outlet channel to adjust the air outlet flow;
the valve is characterized in that a first air inlet hole and a second air inlet hole are formed in the side wall of the valve core, 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 accommodating cavity, and the aperture of the first air inlet hole is larger than that of the second air inlet hole; the adjusting fire hole comprises a first fire hole opposite to the air inlet hole of the outer ring and a second fire hole opposite to the air inlet hole of the inner ring.
Further, an auxiliary air outlet channel communicated with the inner ring air outlet channel is formed on the valve body, an auxiliary air inlet hole is formed on the valve cavity by the auxiliary air outlet channel, and the first fire hole can be communicated with the auxiliary air inlet hole so as to supply air to the auxiliary air outlet channel. So that the first fire hole can simultaneously supply air to the inner ring.
Further, an adjusting screw is arranged on the valve body, and the inner end of the adjusting screw stretches into the auxiliary air outlet channel and can adjust the air inflow of the auxiliary air outlet channel.
Further, the valve core is in an initial state, and 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;
in the process that the valve core rotates to a first angle, a first air inlet hole of the valve core is communicated with an air outlet hole of an 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 hole and an inner ring air inlet hole, and the air outlet quantity of the outer ring air outlet channel and the inner ring air outlet channel is gradually increased;
in the process that 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;
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.
In the process that the valve core rotates to the 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 of the valve core is gradually increased.
The outer side wall of the valve core is provided with a concave step, and the caliber of the step is larger than that of the second air inlet. The load value and the maximum value of the internal and external ring synchronous small fire can be controlled through the diameter of the step, meanwhile, the internal and external ring fire force switching can be well continued, in addition, when the fire power is regulated, the angle range of the synchronous minimum fire can be provided, and the user can conveniently switch to.
The outer side wall of the valve core is also provided with an air guide groove, and one end of the air guide groove is communicated with the second fire hole. The air guide groove can meet the maintenance of inner ring firepower, 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 intersecting angle between 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 are optimal.
The air outlet holes are arranged on the inner wall of the valve cavity in a strip shape along the rotation direction of the valve core. The strip-shaped air outlet holes are matched with the first air inlet hole and the second air inlet hole of the valve core, so that the change mutation of the air inflow is not obvious, the change is mild, and a user can adjust the air inlet to a proper combustion load value in a short time.
In order to ensure that the fuel gas entering the valve core air accommodating cavity can only enter from the first air inlet hole or the second air inlet hole, the valve body can uniformly control the air inlet flow, and some sealing designs are necessary: the valve core bottom trompil, this gas governing valve still includes needle, valve rod and apron, and the aforesaid needle is vertically located the appearance intracavity of case and bottom and the sealed assembly of case bottom, and aforesaid apron is located on the valve body and is covered the valve pocket sealingly, the bottom needle of aforesaid valve rod is connected, and the top stretches out the apron and forms the drive end, and, valve rod and the sealed assembly of apron.
The valve needle is characterized in that a sealing ring is arranged at the bottom of the air containing cavity and is tightly held against the periphery of the valve needle, a compression spring and a positioning sleeve arranged at the lower end of the compression spring are sleeved on the periphery of the valve needle, and the positioning sleeve is arranged in the air containing cavity of the valve core and the bottom end of the positioning sleeve abuts against the sealing ring. The positioning sleeve has the following three functions, namely, the coaxiality of the valve needle and the valve core can be improved, and the shaking quantity of the valve needle is reduced, so that the durability of the valve body is improved; secondly, the sealing ring is tightly pressed, so that good tightness is realized between the sealing ring and the bottom of the valve needle; 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.
Compared with the prior art, the invention has the advantages that: the inner and outer ring air outlet amounts of the valve body are obtained through the first air inlet hole or the second air inlet hole, so that the synchronous increment and synchronous reduction of the air inlet amount of the inner and outer rings can be realized, the firepower of the valve body is synchronously changed, the whole body is heated uniformly, the phenomenon of burning caused by uneven firepower is 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 synchronously fire less by combining the cooperation of the first fire hole and the auxiliary air inlet hole.
The fire power section can be well regulated, the internal and external ring fire forces are synchronous and small, the total power is unchanged in a small angle range, the cake spreading, the egg frying and the soup cooking of a user are facilitated, and the fire power section is very easy to regulate.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment.
Fig. 2 is a perspective cross-sectional view of an embodiment.
Fig. 3 is a perspective cross-sectional view of another view of an embodiment.
Fig. 4 is a schematic diagram of a body structure.
Fig. 5 is a schematic view of another view structure of the body.
Fig. 6 is an enlarged schematic view of the valve cartridge.
Fig. 7 is an enlarged schematic view of another view of the valve cartridge.
Fig. 8 is an enlarged view of a portion of the body of fig. 3.
Fig. 9 is a graph of the intake air amount change of the embodiment.
Fig. 10 is a graph showing the change in 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 embodiments of the drawings.
As shown in fig. 1, 2 and 3, the internal and external circulation flow gas regulating valve comprises a valve body 10, a valve core 2, a valve needle 4, a valve rod 3, a cover plate 6, a solenoid valve 71 and a deflector rod 7, and as shown in fig. 4 and 5, the valve body 10 is provided with 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 formed in the valve body 10, and air outlet holes 12, outer ring air inlet holes 14, inner ring air inlet holes 15 and auxiliary air inlet holes 13 are respectively formed on the side wall of the valve cavity 11 in 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. The central axis of the outer ring air inlet hole 14 and the central axis of the auxiliary air inlet hole 13 are positioned 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 10 in this embodiment is assembled from a body 1 and a bottom plate 1a provided below the body 1. The air outlet holes 12 are arranged in a strip shape on the inner wall of the valve cavity 11 along the rotation direction of the valve core 2. Therefore, the angle range of the air inlet flow regulation can be adjusted, the mutation of the air inlet amount of the valve body is effectively prevented, and the linear change of the air flow of the valve body is well controlled. The outlet holes 12 in this embodiment are shaped like matches (see fig. 2), but could also be designed as flat kidney holes or flat trapezoids (lateral length greater than longitudinal height).
As shown in fig. 6 and 7, the valve core 2 is 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.
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 accommodating 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 include a first fire hole 23 opposite to the outer ring air intake holes 14 and a second fire hole 24 opposite to the inner ring air intake holes 15.
The second air inlet hole 22 is formed with a concave 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 and the maximum value of the internal and external ring synchronous small fire can be controlled through the diameter of the step, meanwhile, the internal and external ring fire force switching can be well continued, in addition, when the fire power is regulated, the angle range of the synchronous minimum fire can be provided, and the user can conveniently switch to.
The outer side wall of the valve core 2 is formed with an air guide groove 241, 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 intake hole 21 is larger than that of the first fire hole 23, and the angle at which the central axis of the first air intake hole 21 intersects with the central axis of the first fire hole 23 is 180 °. The central axis of the first air inlet hole 21 and the central axis of the second air inlet hole 22 intersect at an angle of 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 element 2 and the valve chamber 11, the valve element 2 has a generally conical shape with a wide upper part and a narrow lower part. Is in conical surface fit with the inner wall of the valve cavity 11.
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 inflow of the auxiliary air outlet channel 19, and the first fire hole 23 can be communicated with the auxiliary air inlet hole 13 so as to supply air to the auxiliary air outlet channel 19. The amount of intake air in the auxiliary outlet passage 19 can be achieved by the adjusting screw 191.
As shown in fig. 3 and 8, the bottom of the valve core 2 is perforated, the valve needle 4 is longitudinally arranged in the air accommodating cavity 25 of the valve core 2, the bottom is assembled with the bottom of the valve core 2 in a sealing way, the cover plate 6 is arranged on the valve body 10 in a sealing way through a sealing ring 52 and covers the valve cavity 11, the bottom end of the valve rod 3 is connected with the valve needle 4, the top end of the valve rod extends out of the cover plate 6 to form a driving end, and the valve rod 3 and the cover plate 6 are assembled in a sealing way through a sealing ring 53. The bottom of the air accommodating cavity 25 of the valve core 2 is provided with a sealing ring 51, the sealing ring 51 is tightly held against the periphery of the valve needle 4, the periphery of the valve needle 4 is sleeved with a compression spring 41 and a positioning sleeve 42 positioned at the lower end of the compression spring 41, and the positioning sleeve 42 is positioned in the air accommodating cavity 25 of the valve core 2 and the bottom end of the positioning sleeve is abutted against the sealing ring 51. The upper end and the lower end of the positioning sleeve 42 are respectively provided with an upper support ring 422 and a lower support ring 421 in a radial extending manner, the upper support ring 422 is propped against the compression spring 41, and the lower support ring 421 is tightly pressed with the sealing ring 51.
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, and the pin shaft 31 is positioned below the cover plate 6 and is positioned in the vertical groove 26 of the valve core 2, so that the valve rod 3 can rotate to drive the valve core 2 to rotate together.
Referring to fig. 9, the abscissa indicates the valve spool rotation angle. In the initial state of the valve core 2, the first air inlet hole 21 and the second air inlet hole 22 of the valve core 2 are blocked by the air outlet hole 12 of the air inlet channel 16; the user presses the valve rod 3 to drive the valve needle 4 to press downwards, the deflector rod 7 pushes the electromagnetic valve 71 to open and close, fuel gas enters from the air inlet channel 16, and the valve rod 3 drives the valve core 2 to rotate.
In the process that 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 amounts of the outer ring air outlet channel 18 and the inner ring air outlet channel 17 are synchronously and gradually increased.
In the process that 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 amounts of the outer ring air outlet channel 18 and the inner ring air outlet channel 17 reach 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 amounts of the outer ring air outlet channel 18 and the inner ring air outlet channel 17 are synchronously and gradually reduced.
In the process of rotating the valve core 2 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.
In the process that 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. 10 is a flow chart of a gas regulating valve as is common in the prior art. Compared with the prior gas regulating valve, the flow variability of the prior gas regulating valve is obvious, the inner ring gas flow is basically unchanged, the inner ring gas flow cannot be synchronously reduced with the outer ring gas flow, the adjustable range of the gas regulating valve in the embodiment is wider, and the inner ring gas flow synchronism and the inner ring gas flow linear change are more superior.
Claims (12)
1. An internal and external circulation flow gas regulating valve comprises
The valve body (10) is provided with a valve cavity (11), at least 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) are internally arranged on the valve body (10), and an air outlet hole (12), an outer ring air inlet hole (14) and an inner ring air inlet hole (15) are respectively formed on the side wall of the valve cavity (11) through the air inlet channel (16), the outer ring air outlet channel (18) and the inner ring air outlet channel (17);
the valve core (2) can be rotationally 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 accommodating cavity (25), the side wall of the valve core is provided with an adjusting fire hole communicated with the air accommodating 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;
the valve is characterized in that a first air inlet hole (21) and a second air inlet hole (22) are formed in the side wall of the valve core (2), 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 accommodating 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 hole comprises a first fire hole (23) opposite to the outer ring air inlet hole (14) and a second fire hole (24) opposite to the inner ring air inlet hole (15).
2. The internal and external circulation flow gas regulating valve according to claim 1, characterized in that the valve body (10) is provided with an auxiliary gas outlet channel (19) communicated with the internal circulation 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) so as to supply gas to the auxiliary gas outlet channel (19).
3. The internal and external circulation flow gas regulating valve according to claim 2, wherein the valve body (10) is provided with a regulating screw (191), and the inner end of the regulating screw (191) extends into the auxiliary gas outlet channel (19) and can regulate the gas inflow of the auxiliary gas outlet channel (19).
4. The internal and external circulation flow gas regulating valve according to claim 2, characterized in that 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);
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 amounts of the outer ring air outlet channel (18) and the inner ring air outlet channel (17) are gradually increased;
in the process that 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);
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 the auxiliary air inlet hole (13).
5. The internal and external circulation flow gas regulating valve according to claim 4, characterized in that in the process of rotating the valve core (2) to the fourth angle, the second gas inlet hole (22) of the valve core (2) is communicated with the gas outlet hole (12) of the gas inlet channel (16), and the first fire hole (23) of the valve core (2) and the outer ring gas inlet hole (14) are gradually decreased in gas inflow, and the second fire hole (24) and the inner ring gas inlet hole (15) are gradually increased in gas inflow.
6. The internal and external circulation flow gas regulating valve according to any one of claims 1 to 5, characterized in that the second gas inlet hole (22) is formed with a concave 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 gas inlet hole (22).
7. The internal and external circulation flow gas regulating valve according to any one of claims 1 to 5, characterized in that the outer side wall of the valve core (2) is further formed with a gas guiding groove (241), and one end of the gas guiding groove (241) is communicated with the second fire hole (24).
8. The internal and external circulation flow gas regulating valve according to claim 7, wherein the gas guide grooves (241) are arranged in an arc shape.
9. The internal and external circulation flow gas regulating valve according to any one of claims 1 to 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 with the central axis of the first fire hole (23) is 90 to 225 °.
10. The internal and external circulation flow gas regulating valve according to any one of claims 1 to 5, characterized in that the gas outlet holes (12) are arranged in a strip shape on the inner wall of the valve chamber (11) along the rotation direction of the valve core (2), and the transverse length of the gas outlet holes (12) is larger than the longitudinal height.
11. The internal and external circulation flow gas regulating valve according to any one of claims 1 to 5, characterized in that the bottom of the valve core (2) is provided with a hole, the gas regulating valve further comprises a valve needle (4), a valve rod (3) and a cover plate (6), the valve needle (4) is longitudinally arranged in a gas accommodating cavity (25) of the valve core (2) and is assembled with the bottom of the valve core (2) in a sealing way, the cover plate (6) is arranged on the valve body (10) in a sealing way and covers the valve cavity (11), the valve needle (4) at the bottom end of the valve rod (3) is connected, the top end extends out of the cover plate (6) to form a driving end, and the valve rod (3) is assembled with the cover plate (6) in a sealing way.
12. The internal and external circulation flow gas regulating valve according to claim 11, characterized in that a sealing ring (51) is arranged at the bottom of the gas containing cavity (25), the sealing ring (51) is tightly held on the periphery of the valve needle (4), the periphery of the valve needle (4) is sleeved with a compression spring (41) and a positioning sleeve (42) positioned at the lower end of the compression spring (41), and the positioning sleeve (42) is positioned in the gas containing cavity (25) of the valve core (2) and the bottom end of the positioning sleeve is propped against the sealing ring (51).
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| CN201710107594.XA CN107339449B (en) | 2017-02-27 | 2017-02-27 | Gas regulating valve with inner and outer ring flow |
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| CN201710107594.XA CN107339449B (en) | 2017-02-27 | 2017-02-27 | Gas regulating valve with inner and outer ring flow |
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| CN107339449A CN107339449A (en) | 2017-11-10 |
| CN107339449B true CN107339449B (en) | 2023-05-26 |
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| CN109931421B (en) * | 2017-12-15 | 2023-11-17 | 宁波方太厨具有限公司 | gas plug valve |
| CN109058518B (en) * | 2018-08-28 | 2023-09-08 | 宁波来特燃气具有限公司 | Electrical dual-purpose gas valve |
| CN109139942A (en) * | 2018-09-30 | 2019-01-04 | 苏州普费勒精密量仪有限公司 | A kind of air inlet adjustable valve and pneumatic-to-current converter |
| CN111219500B (en) * | 2018-11-26 | 2021-05-18 | 宁波方太厨具有限公司 | Gas regulating valve |
| CN109611571A (en) * | 2018-12-21 | 2019-04-12 | 浙江博顿燃具科技有限公司 | A kind of plug valve |
| CN110159779A (en) * | 2019-05-13 | 2019-08-23 | 广东长青（集团）股份有限公司 | Plug valve |
| CN110735931B (en) * | 2019-10-24 | 2020-11-24 | 佛山市顺德区美的洗涤电器制造有限公司 | Valve structure and household appliance |
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