Gas stove valve with multiple fire controls

Abstract

The invention discloses a gas valve for a gas stove with multiple fire controls. The gas valve changes the size of the inner ring fire and the outer ring fire by changing the contact area between the gas groove on the gas valve and the corresponding gas transmission channel. Due to the special structure and arrangement of the gas groove on the valve core, the gas valve realizes accurate synchronous control of the inner ring fire and the outer ring fire, and the valve core can also individually and finely control the change in the size of the inner ring fire after the outer ring fire is extinguished.

Description

Technical Field

[0001] The invention relates to a gas stove valve with multiple fire controls, in particular to a gas stove valve comprising a special valve core. Background Art

[0002] As we all know, the most important control component of a gas stove is the gas valve of the gas stove. The gas valve of the gas stove controls the size, speed and even the flow direction of the gas in and out of the gas stove. Therefore, the gas valve is an indispensable part of the gas stove. The gas valves on the market now can realize the switching of the gas inlet and outlet channels, but there are still shortcomings such as the synchronous control of the inner ring fire and the outer ring fire is not stable enough, and the degree of control of the size of the inner ring fire is low. Summary of the invention

[0003] In order to solve the existing shortcomings, the present invention provides a gas stove valve that can stably and accurately control the inner ring fire and the outer ring fire synchronously, and can also independently and finely control the size change of the inner ring fire.

[0004] The technical solution adopted by the present invention to solve the technical problem is:

[0005] A gas valve for a gas stove with multiple fire controls comprises a valve body, a valve core cavity is arranged inside the valve body, and a valve core is movably installed in the valve core cavity.

[0006] The valve core is provided with an inner ring air groove, the cross-sectional area of ​​which first decreases and then increases along the outer circumferential direction of the valve core, and the inner ring air groove is provided with an inner fire vent hole connected to the interior of the valve core; after the gas enters the inner ring air groove through the inner fire vent hole, due to the special structure of the inner ring air groove that is narrow at first and then wide, the flow rate of the gas when flowing in the gas groove changes from large to small and then from small to large.

[0007] The valve core is provided with an outer ring gas groove whose cross-sectional area gradually decreases along the outer circumferential direction of the valve core, and the outer ring gas groove is provided with an outer fire vent hole connected to the inside of the valve core; when the valve core rotates in the valve core cavity, the outer ring gas groove will gradually contact the outer ring gas channel. Due to the gradually narrowing structure of the outer ring gas groove, the contact area between the outer ring gas groove and the channel will show a trend of changing from large to small, thereby controlling the flow rate of the outer ring gas.

[0008] The side wall of the valve core cavity is provided with an inner ring gas channel that can cooperate with the inner ring gas groove for ventilation, and the side wall of the valve core cavity is also provided with an outer ring gas channel that can cooperate with the outer ring gas groove for ventilation. When the inner ring gas channel and the outer ring gas channel are connected with the inner fire vent hole and the outer fire vent hole, the flow path of the gas is connected and the gas can flow. The contact area between the inner ring gas channel and the outer ring gas channel and the inner and outer ring gas grooves gradually changes, so that the gas flow rate of the inner and outer ring fires gradually changes, achieving the effect of controlling the gas flow rate. Since the inner ring gas channel and the outer ring gas channel are respectively connected to the inner fire vent hole and the outer fire vent hole at the same time, the simultaneous control effect of the inner and outer ring fires at the beginning is guaranteed.

[0009] An inner ring air hole is arranged in the middle of the inner ring air groove, and the inner ring air hole divides the inner ring air groove into a front inner ring air groove and a rear inner ring air groove; when the valve core rotates to the middle, the flow rate of the gas is the minimum value. The inner ring air hole can effectively limit the size of the minimum value. The front inner ring air groove and the rear inner ring air groove can realize the segmented control of the flow rate of the inner ring fire gas.

[0010] The outer fire vent holes are located at the location where the cross-sectional area of ​​the outer ring air groove is the largest, and the locations where the cross-sectional areas of the front inner ring air groove and the rear inner ring air groove are the largest are respectively provided with inner fire vent holes.

[0011] The axial angle between the inner ring gas channel and the outer ring gas channel is 90°, the inner ring air hole and the outer fire air vent hole are both located in the same axial direction of the valve core axis, and the length of the front inner ring gas groove is equal to that of the outer ring gas groove. Since the axial angles of the inner ring gas channel and the outer ring gas channel are 90°, and the inner and outer fire air vent holes are respectively connected to the inner and outer ring gas channels at the same time, the axial angles of the inner and outer fire air vent holes are also 90°, achieving the synchronous control effect of the inner and outer ring fire gases. Since the inner ring air hole and the outer ring gas groove are both located in the same axial direction of the valve core, and the length of the front inner ring gas groove is equal to that of the outer ring gas groove, when the contact between the outer ring gas groove and the outer ring gas channel ends, the contact between the front inner ring gas groove and the inner ring gas channel also ends at the same time, achieving the effect of minimizing the inner ring fire when the outer ring fire is extinguished.

[0012] One end of the valve core away from the inner ring air groove is connected to a valve stem extending to the outside of the valve body. The valve stem can simply and effectively control the rotation of the valve core.

[0013] The valve stem is also sleeved with a connecting plate outside the valve body, and the connecting plate is fixed to the valve body by screws, and the end of the connecting plate away from the valve stem is connected to a micro switch for ignition. The micro switch is used to ignite the gas stove so that the gas can be quickly ignited after flowing out of the gas valve.

[0014] The connecting plate is provided with a gear groove for dividing gears at the portion where it is connected to the valve stem; the gear groove can provide a plurality of gears for the gas stove valve, so that the user can have a simple positioning effect on the control of the flame when rotating the valve stem, making the control of the flame more delicate.

[0015] The valve stem is provided with a positioning hole at the part where it is connected to the connecting plate, and a shift pin is installed in the positioning hole, which cooperates with the shift slot and can control the rotation of the valve core. The shift pin can effectively make the valve stem drive the valve core to rotate together, and the cooperation between the shift pin and the shift slot realizes the effect of shift change.

[0016] The bottom of the valve body is provided with an air inlet, and an air inlet passage is provided between the air inlet and the valve core cavity. The air inlet and the air inlet passage can effectively introduce external gas into the valve core cavity.

[0017] An open accommodating chamber is provided in the safety part, and an electromagnetic valve for blocking the gas passage is arranged in the accommodating chamber, and a piston of the electromagnetic valve abuts against the air intake passage.

[0018] A safety part is arranged on the side of the valve body away from the inner ring gas channel, and the air intake passage passes through the safety part; a solenoid valve connected to an external thermocouple is arranged inside the safety part; a pin for transmitting a flame signal is arranged on the upper part of the solenoid valve. The pin is connected to an external thermocouple, and the thermocouple can sense whether there is a flame. When the micro switch is ignited, the probe of the thermocouple is heated, thereby generating a thermoelectric potential. After the air inlet can receive the gas from the outside, the air intake passage transfers the introduced gas to the safety part, thereby ensuring that the solenoid valve can control the gas.

[0019] The air intake passage is composed of an air intake channel and a guide channel. One end of the air intake channel is connected to the air intake port, and the other end is connected to an opening. One end of the guide channel is connected to the opening, and the other end is connected to the inside of the valve core cavity. The piston of the solenoid valve can block the opening. The thermoelectric potential is transmitted to the solenoid valve through the pin, so that the solenoid valve is attracted, the opening is opened, the gas channel is connected, and the gas in the accommodating cavity flows into the valve core through the guide channel. When the flame is accidentally extinguished, the thermoelectric potential disappears, the solenoid valve is no longer attracted, the opening is closed by the piston of the solenoid valve, and the gas channel is blocked, thereby preventing the occurrence of danger.

[0020] An inner ring fire outlet is provided at one end of the valve body away from the safety part, and the inner ring gas channel extends into the inner ring fire outlet; the inner ring fire outlet and the top of the valve body are both provided with gas outlets, and the inner ring gas channel and the outer ring gas channel are respectively connected to the gas outlets. The inner ring gas channel can lead the gas transmitted from the valve core to the inner ring fire outlet located above the inner ring fire outlet, and the outer ring fire gas transmission channel can lead the gas transmitted from the valve core to the outer ring fire outlet located above the valve body.

[0021] The beneficial effect of the present invention is that since the front inner ring air groove and the outer ring air groove are in contact with the inner ring air channel and the outer ring air channel respectively at the same time, the inner ring fire and the outer ring fire can be more stably and accurately controlled synchronously.

[0022] At the same time, since the inner ring air hole and the outer fire air hole are located in the same axial direction of the valve core, the valve core can also independently and finely control the size change of the inner ring fire after the outer ring fire is extinguished. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0024] Figure 1 is an axonometric schematic diagram of the present invention;

[0025] Figure 2 It is a schematic diagram of the cooperation between the valve stem and the valve core of the present invention;

[0026] Figure 3 is a schematic diagram of a valve core of the present invention;

[0027] Figure 4 is a schematic diagram of the inner ring pore of the present invention;

[0028] Figure 5 is a schematic front cross-sectional view of the present invention;

[0029] Figure 6 is an axonometric schematic diagram of a valve body of the present invention;

[0030] Figure 7 It is a cross-sectional schematic diagram of the gear coordination of the present invention;

[0031] Figure 8 It is a structural schematic diagram of the connecting plate of the present invention;

[0032] Fig. 9 is a schematic diagram of an opening of the present invention;

[0033] Fig.10 It is a schematic diagram of firepower change of the present invention. DETAILED DESCRIPTION

[0034] Referring to the accompanying drawings, 1 is a micro switch, 2 is a safety part, 3 is a solenoid valve, 4 is a valve body, 5 is a connecting plate, 6 is a valve stem, 7 is an inner ring fire outlet, 8 is a valve core, 9 is an outer ring air groove, 10 is a front inner ring air groove, 11 is an inner ring air hole, 12 is an accommodating chamber, 13 is an air inlet, 14 is an air outlet, 15 is an inner ring air channel, 16 is an air inlet, 17 is an air inlet channel, 18 is an outer ring air channel, 19 is a guide channel, 20 is a rear inner ring air groove, 21 is an outer ring fire change trend, 22 is an inner ring fire change trend, 23 is a valve core chamber, 24 is an inner fire vent, 25 is an outer fire vent, 27 is a gear slot, and 28 is a gear pin.

[0035] The insurance part 2, the valve body 4 and the inner ring fire outlet part 7 are connected in sequence from right to left, and the interior of the valve body 4 is provided with a valve core cavity 23, in which a valve core 8 is movably installed, and the upper end of the valve core cavity 23 is provided with an outer ring air channel 18, and the left end of the valve core cavity 23 is provided with an inner ring air channel 15, and the portion where the valve core 8 is connected to the inner ring air channel 15 is provided with a front inner ring air groove 10 which gradually narrows and has a length of one quarter of the outer circumference of the valve core 8, and the narrowest side thereof is provided with an inner ring air hole 11, and the side of the inner ring air hole 11 away from the front inner ring air groove 10 is provided with a gradually widening rear inner ring air groove 20. The widest parts of the front inner ring air groove 10 and the rear inner ring air groove 20 are both provided with inner ring air holes 24; the part where the valve core 8 is connected to the outer ring air channel 18 is provided with a gradually narrowing outer ring air groove 9, and the widest end thereof is provided with an external fire air hole 25.

[0036] The valve core 8 is also provided with a valve stem 6 at one end away from the outer ring air groove 9, and the portion of the valve stem 6 located outside the valve body 4 is also sleeved with a connecting plate 5. The connecting plate 5 is provided with a gear groove 27, and a positioning hole is provided at the connection between the valve stem 6 and the connecting plate 5, and a gear pin 28 is provided in the positioning hole. The connecting plate 5 is fixed to the valve body 4 by screws, and a micro switch 1 is provided at one end of the connecting plate 5 away from the valve stem 6. An open accommodating chamber 12 is provided at the upper part of the insurance part 2, and a solenoid valve 3 is provided in the accommodating chamber 12. The bottom of the valve body 4 is provided with an air inlet 16, and the top of the air inlet 16 is provided with an air inlet channel 17 connected to the insurance part 2, and the air inlet channel 17 is connected to the accommodating chamber 12 through the air inlet 13, and the accommodating chamber 12 is connected to the inside of the valve core 8 through the air outlet 14 and the guide channel 19. An outer ring fire outlet is provided at one end of the outer ring air passage 18 away from the valve core 8 , and the inner ring air passage 15 extends to the inside of the inner ring fire outlet portion 7 and is connected to the inner ring fire outlet at its end.

[0037] During operation, the micro switch 1 ignites and the solenoid valve 3 is energized. After the gear position changes, the gas first enters the gas valve from the air inlet 16, enters the interior of the accommodating chamber 12 through the air inlet channel 17 and the air inlet channel 13, and is then transmitted to the interior of the valve core 8 through the air outlet 14 and the guide channel 19. When the valve stem 6 drives the valve core 8 to rotate, through the gradual change of the gear position, the inner fire vent 24 and the outer fire vent 25 will first slowly contact the outer ring gas channel 18 and the inner ring gas channel 15 at the same time, so that their contact area slowly reaches the maximum value; then, due to the gradual decrease in the working area on the front inner ring gas groove 10 and the outer ring gas groove 9, the inner ring gas rate and the outer ring gas rate gradually decrease. When it reaches the minimum value, the outer ring gas delivery is blocked, while the inner ring gas hole 11 allows the inner ring gas to continue to be delivered. Due to the gradually increasing structure of the rear inner ring gas groove 20, the inner ring gas delivery efficiency can still gradually increase after the outer ring gas delivery is blocked, thereby achieving the attached Figure 7 After leaving the valve core, the gas flows out from the inner ring fire outlet and the outer ring fire outlet and is ignited.

Claims

1. A gas valve for a gas stove with multiple fire control, comprising a valve body (4), a valve core cavity (23) being arranged inside the valve body, a valve core (8) being movably mounted inside the valve core cavity (23), characterized in that: The valve core (8) is provided with an inner ring air groove (26) whose cross-sectional area first decreases and then increases along the outer circumferential direction of the valve core (8). The upper end of the valve core cavity (23) is provided with an outer ring air channel (18), the left end of the valve core cavity (23) is provided with an inner ring air channel (15), the portion where the valve core (8) is connected to the inner ring air channel (15) is provided with a front inner ring air groove (10) which gradually narrows and has a length of one quarter of the outer circumference of the valve core (8), the narrowest side of which is provided with an inner ring air hole (11), and the side of the inner ring air hole (11) away from the front inner ring air groove (10) is provided with a rear inner ring air groove (20) which gradually widens; The inner ring air hole (11) is located in the middle of the inner ring air groove (26), and the widest parts of the front inner ring air groove (10) and the rear inner ring air groove (20) are both provided with inner ring air holes (24); the part where the valve core (8) is connected to the outer ring air channel (18) is provided with a gradually narrowing outer ring air groove (9), and the widest end thereof is provided with an external fire air hole (25).

2. The gas stove valve according to claim 1, characterized in that: The axial angle between the inner ring air channel (15) and the outer ring air channel (18) is 90°, the inner ring air hole (11) and the outer fire air hole (25) are both located in the same axial direction of the side wall of the valve core (8), and the front inner ring air groove (10) and the outer ring air groove (9) are of equal length.

3. The gas stove valve according to claim 1, characterized in that: One end of the valve core (8) away from the inner ring air groove (26) is connected to a valve stem (6) extending to the outside of the valve body (4).

4. The gas stove valve according to claim 3, characterized in that: The valve stem (6) is also sleeved with a connecting plate (5) on the portion outside the valve body (4); the connecting plate (5) is fixed to the valve body (4) by means of screws; and one end of the connecting plate (5) away from the valve stem (6) is connected to a micro switch (1) for ignition.

5. The gas stove valve according to claim 4, characterized in that: The connecting plate (5) is provided with a gear position groove (27) for dividing gear positions at a portion where the connecting plate (5) is connected to the valve stem (6); The valve stem (6) is provided with a positioning hole at the portion where it is connected to the connecting plate (5), and a shift pin (28) is installed in the positioning hole and cooperates with the shift groove (27) and can control the rotation of the valve core (8).

6. The gas stove valve according to claim 1, characterized in that: The bottom of the valve body (4) is provided with an air inlet (16), and the valve body (4) is provided with an air inlet passage connecting the air inlet (16) and the valve core cavity (23).

7. The gas valve for a gas stove as claimed in claim 6, characterized in that: A safety part (2) is provided on a side of the valve body (4) away from the inner ring air passage (15), and the air intake passage passes through the safety part (2); an electromagnetic valve (3) connected to an external thermocouple is provided in the safety part (2); The air intake passage is composed of an air intake channel (17) and a guide channel (19); one end of the air intake channel (17) is connected to the air intake port (16), and the other end is connected to an opening (12); one end of the guide channel (19) is connected to the opening (12), and the other end is connected to the inside of the valve core chamber (23); The piston of the solenoid valve (3) is capable of blocking the opening (12).

8. The gas stove valve according to claim 1, characterized in that: An inner ring fire outlet portion (7) is provided at one end of the valve body (4) close to the inner ring air channel (15), and the inner ring air channel (15) extends to the inside thereof; the inner ring fire outlet portion (7) and the top end of the valve body (4) are both provided with air outlets, and the inner ring air channel (15) and the outer ring air channel (18) are respectively connected to the air outlets.

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