Gas supply valve for gas stove

Abstract

The utility model discloses a gas supply valve for a gas stove, which comprises a valve casing, a gas control box is arranged on the surface of the valve casing, a valve seat is arranged at the bottom of the valve casing, a gas channel for conveying gas is arranged at the bottom of the valve seat, and the other end of the gas channel is communicated with the bottom of an inner cavity of the valve seat. An air supply cavity is formed in the upper portion of an inner cavity of the valve seat through a partition plate, and a through opening is formed in the surface of the partition plate. According to the gas supply valve for the gas stove, after the valve element is driven to rotate, the expansion opening can be driven to move to the position corresponding to the guide channel, the gas inlet rate is increased, the second opening is driven to move to the position corresponding to the first conveying channel, the first opening is driven to move to the position corresponding to the second conveying channel, and cooking can be conducted; when fire is turned off, the piston piece can be driven to quickly block the through opening, then supply of fuel gas is quickly turned off, and the safety of the fuel gas in the using process is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of gas supply valves, in particular to a gas supply valve for a gas stove. Background Art

[0002] Gas supply valves are core safety equipment in gas pipeline projects, playing a key role in cutting off, connecting or regulating gas flow. There are many types of gas supply valves, which can be divided into multiple types according to different connection methods, drive methods and functional characteristics to meet the needs of different scenarios.

[0003] In the existing technology, the gas supply valve not only has the basic cut-off and connection functions, but also can achieve precise control of the gas flow through the adjustment function. However, in the use of the existing gas supply valve for gas stoves, the air intake volume of the single-channel gas supply and the dual-channel gas supply is mostly fixed, and the gas intake volume cannot be adjusted according to the switching of the single and dual channels. When the dual-channel gas supply is used, it is easy for the gas supply to be insufficient and the flame to be small, which is not conducive to cooking.

[0004] Therefore, how to improve the supply of gas when switching between single and double channels of the gas supply valve is a technical problem that needs to be solved urgently in the industry. Utility Model Content

[0005] The main purpose of the utility model is to provide a gas supply valve for a gas stove, aiming to solve the problem that the air intake of the existing gas supply valves for gas stoves is mostly fixed for single-channel gas supply and dual-channel gas supply, and the gas intake amount cannot be adjusted according to the switching of single and dual channels.

[0006] The utility model provides a gas supply valve for a gas stove, comprising a valve housing, a gas control box being provided on one side of the valve housing, the inner cavity of the gas control box being formed into two mutually independent upper and lower gas supply chambers and gas guide chambers via a partition, a gas passage communicating with the gas guide chamber being provided at the bottom of the valve housing, a through opening being provided on the partition, a piston member being provided inside the gas supply chamber and being capable of being raised and lowered to seal the through opening, and a solenoid valve for controlling the reset of the piston member being provided at the top of the gas control box;

[0007] The air supply cavity is connected to the inner cavity of the valve housing via a guide channel. The inner cavity of the valve housing is provided with a valve core. The rear end of the valve core is an open air separation chamber. A gap is formed between the rear end of the air separation chamber and the rear end of the inner wall of the valve housing. The air outlet portion of the guide channel is located within the gap. An expansion port is provided on the surface of the valve core, which is adapted to the guide channel and connected to the interior of the air separation chamber. The top of the valve housing is vertically connected to a first delivery channel, and the rear end of the side wall of the valve housing is connected to a second delivery channel.

[0008] An independent air supply port and a second opening communicating with the inner cavity of the air separation chamber are provided on the same annular surface of the outer annular surface of the air separation chamber, and a first opening communicating with the inner cavity of the air separation chamber is provided on the annular surface of the air separation chamber and located on the rear side of the independent air supply port. When the expansion port corresponds to the guide channel, the second opening and the first opening are communicated with the first conveying channel and the second conveying channel respectively. When the expansion port passes over the guide channel, the second opening and the first opening are blocked by the valve housing, and the independent air supply port is communicated with the first channel.

[0009] Preferably, a diversion cavity is provided at the front end of the valve core, a diversion opening communicating with the inner cavity of the diversion cavity is provided at the front end of the air diversion chamber, and the top of the independent air supply port is communicated with the inner cavity of the diversion cavity.

[0010] Preferably, a transmission paddle is provided in the middle of the inner cavity of the air control box by rotating a torsion spring member, a valve stem is provided on the front end face of the valve housing, the rear end of the valve stem is movably extended to the interior of the valve housing, a transmission housing is provided on the surface of the valve stem, a transmission protrusion is fixedly connected to the surface of the transmission housing, a transmission rod whose rear end is pulled out and extended to its interior is provided on the front side face of the air control box, a ring piece is fixedly connected to the rear end of the transmission rod, and a second spring is provided between the front side face of the ring piece and the front side face of the inner wall of the air control box.

[0011] Preferably, an ignition sensor is provided on the surface of the valve housing, a trigger plate is provided at the input end of the ignition sensor, and a trigger arc plate adapted to the trigger plate is fixedly connected to the surface of the transmission housing.

[0012] Preferably, a valve needle is provided in the inner cavity of the diversion cavity, a sealing member that contacts the inner wall of the diversion cavity is fixedly connected to the surface of the valve needle, and a first spring is provided between the rear end of the valve stem and the front end of the valve needle.

[0013] Preferably, a limiting protrusion is fixedly connected to the side wall of the valve stem, and a limiting groove adapted to the limiting protrusion is formed at the front end of the valve core.

[0014] When the valve stem is pressed, the electromagnetic valve is squeezed through the through port, and the electromagnetic valve moves to push the transmission paddle to change the tilt angle. After the other end of the transmission paddle hits the piston part, the piston part is pushed up, and the electromagnetic valve is triggered. After the piston part is fixed by the electromagnetic valve, the through port can be opened, and the gas can enter the inner cavity of the gas supply cavity through the through port, and then enter the inner cavity of the valve shell through the inner cavity of the guide channel. The gas can enter the inner cavity of the gas distribution chamber through the gap between the rear end of the valve core and the rear end of the inner wall of the valve shell. When the staff twists the valve stem to drive the valve core to rotate, the expansion When the gas is supplied through a single channel, the gas supply is reduced, so that the combustion is more complete and the cooking is more convenient. By providing an electromagnetic valve, the piston can be driven to quickly block the port when the fire is turned off, thereby quickly closing the gas supply, improving the safety of gas use, and facilitating cooking. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a side sectional structural diagram of the utility model;

[0016] Figure 2 It is a schematic diagram of the three-dimensional structure of the utility model;

[0017] Figure 3 This is a structural diagram of the valve seat and the gas channel in the utility model;

[0018] Figure 4 This is a schematic structural diagram of the torsion spring and the transmission paddle in the present invention;

[0019] Figure 5 This is a structural diagram of the solenoid valve and piston in the utility model;

[0020] Figure 6 This is a structural diagram of the valve core and the expansion port in the utility model;

[0021] Figure 7 This is a schematic structural diagram of the limiting protrusion and the limiting groove in the utility model;

[0022] Figure 8 It is a structural diagram of the air supply cavity and the air guide cavity in the utility model.

[0023] In the figure: 1. valve housing; 2. gas control box; 3. valve seat; 4. gas channel; 5. valve stem; 6. port; 7. solenoid valve; 8. piston; 9. air supply chamber; 10. guide channel; 11. valve core; 12. valve needle; 13. first spring; 14. sealing member; 15. transmission housing; 16. transmission protrusion; 17. transmission rod; 18. ring plate; 19. second spring; 20. torsion spring member; 21. transmission paddle; 22. limiting groove; 23. expansion opening; 24. first opening; 25. gas distribution chamber; 26. diverter chamber; 27. independent air supply port; 28. second opening; 29. ​​diverter opening; 30. first delivery channel; 31. second delivery channel; 32. ignition sensor; 33. trigger plate; 34. trigger arc plate; 35. limiting protrusion; 36. air guide chamber.

[0024] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0025] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0026] Reference Figure 1-8 , an embodiment of the utility model is proposed, a gas supply valve for a gas stove, including a valve housing 1, a gas control box 2 is provided on one side of the valve housing 1, the inner cavity of the gas control box 2 is formed into two independent upper and lower gas supply chambers 9 and gas guide chambers 36 through a partition, and a gas channel 4 connected to the gas guide chamber 36 is provided at the bottom of the valve housing 1.

[0027] A through hole 6 is formed on the partition, and a piston 8 is provided inside the air supply cavity 9 for sealing the through hole 6 in a liftable manner. A solenoid valve 7 for controlling the reset of the piston 8 is provided on the top of the air control box 2 .

[0028] The air supply chamber 9 is connected to the inner cavity of the valve housing 1 through a guide channel 10. The inner cavity of the valve housing 1 is provided with a valve core 11. The rear end of the valve core 11 is an open air distribution chamber 25. A gap is formed between the rear end of the air distribution chamber 25 and the rear end of the inner wall of the valve housing 1. The air outlet part of the guide channel 10 is located within the gap range.

[0029] The surface of the valve core 11 is provided with an expansion port 23 adapted to the guide channel 10 and connected to the interior of the air distribution chamber 25. The top of the valve housing 1 is vertically connected to a first delivery channel 30, and the rear end of the side wall of the valve housing 1 is connected to a second delivery channel 31.

[0030] An independent air supply port 27 and a second opening 28 communicating with the inner cavity of the air dividing chamber 25 are provided on the same annular surface of the outer annular surface of the air dividing chamber 25 at intervals. A first opening 24 communicating with the inner cavity of the air dividing chamber 25 is provided on the outer annular surface of the air dividing chamber 25 and located behind the independent air supply port 27.

[0031] When the expansion opening 23 corresponds to the guide channel 10 , the second opening 28 and the first opening 24 are communicated with the first conveying channel 30 and the second conveying channel 31 , respectively.

[0032] When the expansion port 23 passes over the guide channel 10 , the second opening 28 and the first opening 24 are blocked by the valve housing 1 , and the independent air supply port 27 and the first channel 30 are connected. A valve seat 3 is provided at the bottom of the valve housing 1 .

[0033] A diversion cavity 26 is defined at the front end of the valve core 11 , a diversion opening 29 communicating with the inner cavity of the diversion cavity 26 is defined at the front end of the air diversion chamber 25 , and the top of the independent air supply port 27 is communicated with the inner cavity of the diversion cavity 26 .

[0034] After the expansion port 23 is offset from the guide channel 10, the gas can enter the inner cavity of the valve housing 1 through the gas outlet portion within the gap range. The valve core 11 is conical, and the rear end of the surface of the valve core 11 contacts the inner wall of the valve housing 1, so that the gas entering the inner cavity of the valve housing 1 stays in the gap, thereby preventing the gas from leaking through the outer wall of the valve core 11.

[0035] The first delivery channel 30 and the second delivery channel 31 are located in different annular planes of the valve 11 . The first delivery channel 30 is located in the same annular plane as the second opening 28 and the independent air supply port 28 , and the second delivery channel 31 is located in the same annular plane as the first opening 24 .

[0036] Furthermore, a transmission paddle 21 is provided in the middle of the inner cavity of the air control box 2 by rotating a torsion spring member 20, a valve stem 5 is provided on the front end face of the valve housing 1, and the rear end of the valve stem 5 is movably extended to the interior of the valve housing 1, a transmission housing 15 is provided on the surface of the valve stem 5, and a transmission protrusion 16 is fixedly connected to the surface of the transmission housing 15, a transmission rod 17 is provided on the front side face of the air control box 2, and the rear end of the transmission rod 17 is fixedly connected to the interior thereof, and a ring piece 18 is fixedly connected to the rear end of the transmission rod 17, and a second spring 19 is provided between the front side face of the ring piece 18 and the front side face of the inner wall of the air control box 2.

[0037] After the gas is delivered to the inner cavity of the gas control box 2, the valve stem 5 is pressed, and the solenoid valve 7 is squeezed through the through port 6. The solenoid valve 7 moves and pushes the transmission paddle 21 to change the inclination angle. After the other end of the transmission paddle 21 hits the piston member 8, the piston member 8 is pushed up, thereby triggering the solenoid valve 7. After the piston member 8 is fixed by the solenoid valve 7, the through port 6 can be opened, and the gas can enter the inner cavity of the gas supply cavity 9 through the through port 6, and then enter the inner cavity of the valve housing 1 through the inner cavity of the guide channel 10. The gas can enter the inner cavity of the gas distribution chamber 25 through the gap between the rear end of the valve core 11 and the rear end of the inner wall of the valve housing 1.

[0038] When the staff twists the valve stem 5 and drives the valve core 11 to rotate, the expansion opening 23 can be driven to move to the corresponding position of the guide channel 10, thereby increasing the intake rate of the gas, and driving the second opening 28 to move to the corresponding position of the first delivery channel 30 and the first opening 24 to move to the corresponding position of the second delivery channel 31, and cooking can be carried out.

[0039] The solenoid valve 7 can stop working when the fire is turned off, so that the piston 8 can immediately block the opening 6, thereby quickly shutting off the gas supply, thereby improving the safety of gas use and facilitating cooking.

[0040] During dual-channel ventilation, the gas supply to the inside of the valve housing 1 is increased to avoid the situation of low firepower, and during single-channel gas supply, the gas supply is reduced to make the combustion more complete, which is beneficial for cooking.

[0041] When the first delivery channel 30 is required to supply gas independently, twist the valve stem 5 to drive the expansion port 23 to offset the guide channel 10, reduce the amount of gas entering, and drive the first opening 24 to offset the second delivery channel 31, and then drive the independent gas supply port 27 to move to the corresponding position of the first delivery channel 30. The gas enters the inner cavity of the independent gas supply port 27 through the diversion opening 29 and the diversion cavity 26, and then enters the inner cavity of the first delivery channel 30 for independent gas supply work.

[0042] Furthermore, a valve needle 12 is provided in the inner cavity of the diversion cavity 26 , and a sealing member 14 is fixedly connected to the surface of the valve needle 12 so as to abut against the inner wall of the diversion cavity 26 . A first spring 13 is provided between the rear end of the valve stem 5 and the front end of the valve needle 12 .

[0043] During the movement of the valve stem 5 , the first spring 13 is squeezed and contracted to produce deformation, which facilitates the subsequent resetting of the valve stem 5 . The seal 14 seals between the valve needle 12 and the valve core 11 , thereby improving the sealing performance of the inner cavity of the diversion cavity 26 .

[0044] Furthermore, an ignition sensor 32 is provided on the surface of the valve housing 1 , a trigger plate 33 is provided at the input end of the ignition sensor 32 , and a trigger arc plate 34 adapted to the trigger plate 33 is fixedly connected to the surface of the transmission housing 15 .

[0045] During the movement of the valve stem 5, the transmission housing 15 is driven to move, and after the trigger arc plate 34 contacts the trigger plate 33, the ignition sensor 32 is triggered, so that the igniter on the stove starts ignition.

[0046] Furthermore, a limiting protrusion 35 is fixedly connected to the side wall of the valve stem 5 , and a limiting groove 22 adapted to the limiting protrusion 35 is formed at the front end of the valve core 11 .

[0047] After the valve stem 5 is embedded in the interior of the valve core 11, it drives the limiting protrusion 35 to slide in the interior of the limiting groove 22, thereby improving the smoothness and stability of the movement of the valve stem 5 and enabling the valve core 11 to rotate when the valve stem 5 rotates.

[0048] During operation, after the valve seat 3 delivers the gas to the inner cavity of the gas control box 2, the valve stem 5 is pressed, and after the solenoid valve 7 is squeezed through the through port 6, the solenoid valve 7 moves and pushes the transmission paddle 21 to change the tilt angle. After the other end of the transmission paddle 21 hits the piston member 8, the piston member 8 is pushed up, and the solenoid valve 7 can be triggered. After the piston member 8 is fixed by the solenoid valve 7, the through port 6 can be opened, and the gas can enter the inner cavity of the gas supply cavity 9 through the through port 6, and then enter the inner cavity of the valve housing 1 through the inner cavity of the guide channel 10, and then enter the inner cavity of the valve housing 1 through the rear end of the valve core 11 and the inner wall of the valve housing 1. The gas can enter the inner cavity of the gas distribution chamber 25 through the gap between the ends. When the staff twists the valve stem 5 and drives the valve core 11 to rotate, the expansion port 23 can be driven to move to the corresponding position of the guide channel 10, thereby increasing the gas intake rate, and driving the second opening 28 to move to the corresponding position of the first delivery channel 30 and the first opening 24 to move to the corresponding position of the second delivery channel 31, and cooking can be carried out. Through the solenoid valve 7, when the fire is turned off, the piston part 8 can be driven to quickly seal the port 6, thereby quickly closing the gas supply.

[0049] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformation made using the contents of the description and drawings of the present invention, or directly or indirectly applied in other related technical fields, is also included in the patent protection scope of the present invention.

Claims

1. A gas supply valve for a gas stove, comprising a valve housing (1), characterized in that: An air control box (2) is provided on one side of the valve housing (1), and the inner cavity of the air control box (2) forms two upper and lower independent air supply chambers (9) and an air guide chamber (36) through a partition. A gas channel (4) communicating with the air guide chamber (36) is provided at the bottom of the valve housing (1), and a through hole (6) is provided on the partition. A piston member (8) that can be raised and lowered for sealing the through hole (6) is provided inside the air supply chamber (9), and a solenoid valve (7) that controls the reset of the piston member (8) is provided on the top of the air control box (2); The air supply cavity (9) is connected to the inner cavity of the valve housing (1) via a guide channel (10); the inner cavity of the valve housing (1) is provided with a valve core (11); the rear end of the valve core (11) is an open air separation chamber (25); a gap is formed between the rear end of the air separation chamber (25) and the rear end of the inner wall of the valve housing (1); the air outlet portion of the guide channel (10) is located within the gap; the surface of the valve core (11) is provided with an expansion port (23) adapted to the guide channel (10) and connected to the interior of the air separation chamber (25); the top of the valve housing (1) is vertically connected to a first delivery channel (30); and the rear end of the side wall of the valve housing (1) is connected to a second delivery channel (31); An independent air supply port (27) and a second opening (28) communicating with the inner cavity of the air separation chamber (25) are provided on the same annular surface of the outer annular surface of the air separation chamber (25) at intervals. A first opening (24) communicating with the inner cavity of the air separation chamber (25) is provided on the outer annular surface of the air separation chamber (25) and located on the rear side of the independent air supply port (27). When the expansion port (23) corresponds to the guide channel (10), the second opening (28) and the first opening (24) are communicated with the first delivery channel (30) and the second delivery channel (31) respectively. When the expansion port (23) passes over the guide channel (10), the second opening (28) and the first opening (24) are blocked by the valve housing (1), and the independent air supply port (27) is communicated with the first delivery channel (30).

2. The gas supply valve for a gas stove according to claim 1, characterized in that: The front end of the valve core (11) is provided with a diversion cavity (26), the front end of the air separation chamber (25) is provided with a diversion opening (29) connected to the inner cavity of the diversion cavity (26), and the top of the independent air supply port (27) is connected to the inner cavity of the diversion cavity (26).

3. The gas supply valve for a gas stove according to claim 2, characterized in that: A transmission paddle (21) is provided in the middle of the inner cavity of the air control box (2) through a torsion spring member (20) for rotation, a valve stem (5) is provided on the front end surface of the valve housing (1), the rear end of the valve stem (5) is movably extended to the interior of the valve housing (1), a transmission housing (15) is provided on the surface of the valve stem (5), a transmission protrusion (16) is fixedly connected to the surface of the transmission housing (15), a transmission rod (17) is provided on the front side surface of the air control box (2) and the rear end is pulled out and extended to the interior thereof, the rear end of the transmission rod (17) is fixedly connected to a ring plate (18), and a second spring (19) is provided between the front side surface of the ring plate (18) and the front side surface of the inner wall of the air control box (2).

4. The gas supply valve for a gas stove according to claim 3, characterized in that: An ignition sensor (32) is provided on the surface of the valve housing (1), a trigger plate (33) is provided at the input end of the ignition sensor (32), and a trigger arc plate (34) adapted to the trigger plate (33) is fixedly connected to the surface of the transmission housing (15).

5. The gas supply valve for a gas stove according to claim 3, characterized in that: The inner cavity of the diversion cavity (26) is provided with a valve needle (12), the surface of the valve needle (12) is fixedly connected with a sealing member (14) that contacts the inner wall surface of the diversion cavity (26), and a first spring (13) is provided between the rear end of the valve stem (5) and the front end of the valve needle (12).

6. The gas supply valve for a gas stove according to claim 3, characterized in that: The side wall of the valve stem (5) is fixedly connected to a limiting protrusion (35), and the front end of the valve core (11) is provided with a limiting groove (22) adapted to the limiting protrusion (35).

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