Gas valve

Abstract

The utility model discloses a gas valve which is reasonable in layout and facilitates normal passing of gas. A gas valve comprises a gas valve body, a rotary switch is arranged at the front end of the gas valve body, a communicated nozzle is arranged at the rear end of the gas valve body, and the rotary switch and the nozzle are coaxially arranged. The left side of the rear end of the gas valve body extends and is horizontally communicated with a first gas outlet pipe, an ignition pipe is mounted at the rear end of the first gas outlet pipe and is parallel to the nozzle, and an ignition needle is mounted above the ignition pipe; the right side of the rear end of the gas valve body extends to form a vertically communicated first mounting seat, an electromagnetic valve is mounted in the first mounting seat, a thermocouple is mounted at the top of the first mounting seat, the measuring end of the thermocouple is located beside the nozzle, and the thermocouple is used for driving the electromagnetic valve; a piezoelectric igniter is installed on the top face of the front end of the gas valve body and electrically connected with the ignition needle. A communicated gas inlet pipe protrudes out of the bottom of the gas valve body.

Description

Technical Field

[0001] This utility model belongs to the field of gas valve technology, specifically relating to a gas valve. Background Technology

[0002] The valve body assembly of a household gas stove is an important component of the gas stove. Functions such as gas delivery, ignition, flameout, and flame adjustment are all controlled through this component.

[0003] A micro switch is installed inside the valve body. When the knob is pressed, it touches the lever, opens the solenoid valve, and the gas path is supplied. At the same time, the switch is turned on, and piezoelectric ignition is activated. This brief moment is achieved by the lever opening the gas path.

[0004] When the flame heats the thermocouple, the thermocouple generates a thermoelectric potential, which engages the solenoid valve. When the valve is released, the solenoid valve remains engaged under the influence of the thermoelectric potential, keeping the gas path open and the flame burning continuously. This is the ignition process. In reality, the entire ignition process is completed in 1 to 3 seconds. Existing gas valve layouts are unreasonable. For example, a novel gas valve with application number 201920959705.4 has a solenoid valve located in the gas passage of the valve body 1, and the solenoid valve has a socket 3 for connecting to the thermocouple 2. Figure 1 As shown, the gas passage has side intake and top exhaust, with the burner mounted on top, increasing the vertical height requirement; at the same time, the solenoid valve is directly installed inside the gas passage, affecting the flow of gas. Summary of the Invention

[0005] In view of the shortcomings of the above-mentioned background technology, the purpose of this utility model is to provide a gas valve with a reasonable layout that facilitates the normal passage of gas.

[0006] To solve the above-mentioned technical problems, the purpose of this utility model is achieved as follows:

[0007] A gas valve includes a gas valve body, a rotary switch at the front end of the gas valve body, and a nozzle at the rear end of the gas valve body. The rotary switch and the nozzle are arranged coaxially.

[0008] The gas valve body extends horizontally to the left rear end and connects to the first gas outlet pipe. An ignition tube is installed at the rear end of the first gas outlet pipe. The ignition tube is parallel to the nozzle and an ignition needle is installed above the ignition tube. The gas valve body extends vertically to the right rear end and connects to the first mounting base. A solenoid valve is installed in the first mounting base. A thermocouple is installed on the top of the first mounting base. The measuring end of the thermocouple is located next to the nozzle. The thermocouple is used to drive the solenoid valve.

[0009] A piezoelectric igniter is installed on the top surface of the front end of the gas valve body, and the piezoelectric igniter is electrically connected to the ignition needle.

[0010] The bottom of the gas valve body protrudes and has a connected air inlet pipe.

[0011] Based on the above scheme and as a preferred embodiment of the above scheme: the nozzle is threadedly connected to the gas valve body, the surface of the nozzle is a hexagonal prism, and the outer end of the nozzle is a frustum shape; the nozzle is made of metal copper.

[0012] Based on the above scheme and as a preferred embodiment: a first mounting block protrudes from the rear end of the first air outlet pipe, and a first threaded hole is provided on the first mounting block; the ignition pipe includes a first air passage, and a U-shaped first clamping plate protrudes from the left side of the front end of the first air passage. The first clamping plate is fitted into the first mounting block, and a bolt passes through the first clamping plate and is connected and fixed to the first threaded hole; a first connecting plate protrudes from the left side of the first air passage, and two pairs of claws protrude from the first connecting plate. The two pairs of claws are bent to clamp and fix the ignition needle.

[0013] Based on the above scheme and as a preferred embodiment of the above scheme: a second connecting plate extends from the rear end of the first air passage, and two bent baffles extend inward from the edge of the second connecting plate, with a gap between the two baffles, and the two baffles bend from front to back to narrow the passage of the first air passage; the tip of the ignition needle is located above the second connecting plate.

[0014] Based on the above scheme and as a preferred embodiment of the above scheme: the top of the first mounting base is threaded with a connector, the top of the connector has an internal thread hole, and the guide end of the thermocouple is threadedly connected to the connector.

[0015] Based on the above scheme and as a preferred embodiment: the front top surface of the gas valve body is recessed to form a long strip-shaped first recess, the outer surface of the right side wall of the first recess has a first locking block protruding, and the upper surface of the left side wall of the first recess has a second threaded hole; the piezoelectric igniter is clamped and fixed in the first recess; it also includes a 7-shaped cover plate, the right side plate of the cover plate has a first through hole, the first locking block is inserted into the first through hole and hooked, the cover plate covers the first recess, and the bolt passes through the left end of the cover plate and is connected and fixed to the second threaded hole.

[0016] The outstanding and beneficial technical effects of this utility model compared to the prior art are:

[0017] Compared with the prior art, the gas valve of this utility model has a rotary switch located at the front end of the gas valve body, a nozzle located at the rear end of the gas valve body, a first gas outlet pipe located at the left end of the gas valve body, an ignition needle installed above the first gas outlet pipe, a solenoid valve located at the right end of the gas valve body, a thermocouple driving the solenoid valve, a piezoelectric igniter located above the gas valve and electrically connected to the ignition needle, and an inlet pipe located at the bottom of the gas valve. The various components on the gas valve body are rationally arranged, eliminating the structure of the solenoid valve being directly installed in the gas passage, allowing gas to flow normally and quickly. Attached Figure Description

[0018] Figure 1This is a schematic diagram of the overall exploded structure of this utility model.

[0019] Figure 2 This is a schematic diagram of the overall structure of this utility model.

[0020] Figure 3 This is a schematic diagram of the overall structure of this utility model.

[0021] Figure 4 This is a schematic diagram of the overall assembly structure of this utility model.

[0022] Figure 5 This is a schematic diagram of the ignition tube structure of this utility model.

[0023] Figure 6 This is a schematic diagram illustrating the use of this utility model.

[0024] Reference numerals: Gas valve body 01; First gas outlet pipe 010; First mounting block 0100; First threaded hole 0101; First mounting base 011; First recess 0110; First locking block 0111; Second threaded hole 0112; Cover plate 012; First through hole 0120; Rotary switch 02; Nozzle 03; Ignition tube 04; Ignition needle 040; First gas passage 041; First locking plate 0410; First connecting plate 0411; Claw 0412; Second connecting plate 0413; Stop bar 0414; Solenoid valve 05; Thermocouple 06; Piezoelectric igniter 07; Connector 08. Detailed Implementation

[0025] The present invention will be further described below with reference to the accompanying drawings and specific embodiments;

[0026] This embodiment provides a gas valve, including a gas valve body 01. A rotary switch 02 is provided at the front end of the gas valve body 01, and a nozzle 03 is provided at the rear end of the gas valve body 01. The rotary switch 02 and the nozzle 03 are arranged on the same axis. Rotating the rotary switch 02 opens the gas passage, and the gas exits from the nozzle 03 and enters the burner. The rotary switch and the nozzle 03 are arranged on the same axis, which can enable faster response. The nozzle 03 serves as a high-power outlet.

[0027] The rear left side of the gas valve body 01 extends horizontally and connects to the first gas outlet pipe 010, through which gas is led out; the rear end of the first gas outlet pipe 010 is equipped with an ignition pipe 04, which is set parallel to the nozzle 03, and an ignition needle 040 is installed above the ignition pipe 04; the ignition pipe 04 is used to gather and lead out the gas, and the ignition needle 040 triggers the current to ignite the flame, which then ignites the gas coming out of the nozzle 03, achieving a large fire;

[0028] A first mounting base 011 extends vertically to the right rear end of the gas valve body 01. A solenoid valve 05 is installed in the first mounting base. A thermocouple 06 is installed on the top of the first mounting base 011. The measuring end of the thermocouple 06 is located next to the nozzle 03. The thermocouple 06 is used to drive the solenoid valve 05. The solenoid valve 05 is used to control the gas flow. The thermocouple 06 is used to drive the solenoid valve 05. The solenoid valve 05 and the thermocouple 06 are positioned on the right side of the gas valve body 01, facing upwards, and separated from the ignition tube 04 and ignition needle 040 on the left side. The layout is reasonable and will not cause interference.

[0029] A piezoelectric igniter 07 is installed on the top surface of the front end of the gas valve body 01. The piezoelectric igniter 07 is electrically connected to the ignition needle 040. The piezoelectric igniter 07 triggers the ignition needle 040 to generate current.

[0030] The bottom of the gas valve body 01 has a protruding inlet pipe 013. The inlet pipe 013 is connected to the gas pipeline to allow gas to enter.

[0031] As described above, the rotary switch 02 and the nozzle 03 are respectively set at the front and rear ends of the gas valve body 01 to achieve coaxial installation. The nozzle 03 is connected to the burner head for combustion. The ignition tube 04 is set on the left side of the gas valve body 01 for installing the ignition needle 040. The solenoid valve 05 and the thermocouple 06 that drives the solenoid valve 05 are installed on the right side of the gas valve body 01. The piezoelectric igniter 07 that drives the ignition needle 040 is set above the gas valve body 01. The gas inlet pipe 013 is set at the bottom of the gas valve body 01.

[0032] The gas valve body 01 has components located at all four sides (front, back, left, right, top, and bottom), resulting in a more reasonable and compact layout. This makes it more practical for homes with limited space, especially gas stoves.

[0033] Furthermore, the nozzle 03 is threadedly connected to the gas valve body 01, the surface of the nozzle 03 is a hexagonal prism, and the outer end of the nozzle 03 is frustum-shaped; the nozzle 03 is made of copper.

[0034] As mentioned above, the hexagonal nozzle 03 fits into the wrench clamp and is screwed into the gas valve body 01 for fixation, making it more practical than the cylindrical nozzle; the frustum-shaped tip makes it easy to insert into the burner head; and the copper metal is heat-resistant and not easily deformed.

[0035] Furthermore, a first mounting block 0100 protrudes from the rear end of the first vent pipe 010, and a first threaded hole 0101 is provided on the first mounting block 0100; the first mounting block 0100 is integrally formed with the first vent pipe 010, and the first mounting block 0100 is used as a connector.

[0036] The ignition tube 04 includes a first gas passage 041. A U-shaped first retaining plate 0410 protrudes from the left side of the front end of the first gas passage 041. The first retaining plate 0410 is fitted into the first mounting block 0100, and a bolt passes through the first retaining plate 0410 and is connected and fixed to the first threaded hole 0101.

[0037] The first gas duct 041 gathers and circulates the gas, and the first clamping plate 0410 is bent into a U-shape to cover and fix the first mounting block 0100, making it less likely to fall off.

[0038] A first connecting plate 0411 protrudes from the left side of the first air passage 041. Two pairs of claws 0412 protrude from the first connecting plate 0411, and the two pairs of claws 0412 bend to clamp and fix the ignition needle 040.

[0039] As described above, the four claws 0412 clamp the ignition needle 040 from above, below, front, and back to prevent it from falling. The claws 0412 can be bent to hold the ignition needle 040.

[0040] Furthermore, a second connecting plate 0413 extends from the rear end of the first air passage 041, and two bent baffles 0414 extend inward from the edge of the second connecting plate 0413. There is a gap between the two baffles 0414, and the two baffles 0414 bend from front to back to narrow the passage of the first air passage 041; the tip of the ignition needle 040 is located above the second connecting plate 0413.

[0041] As described above, the gas flows through the first gas passage 041 and diffuses at the first baffle 0414, which can effectively print the gas. At the same time, the second baffle 0414 reduces the size of the first gas passage 041, achieving a high-pressure rushing effect, which has the functions of dispersing the gas flow and converging the pressure.

[0042] Furthermore, the top of the first mounting base 011 is threadedly connected to a connector 08, and the top of the connector 08 has an internal threaded hole, and the guide end of the thermocouple 06 is threadedly connected to the connector 08.

[0043] As mentioned above, such as Figure 4 As shown, the connector 08 has an internal thread on its cylindrical inner wall. The connector 08 is threaded to the first mounting base 011, which covers the solenoid valve 05 to form a protective layer. The outer surface of the guide section of the thermocouple 06 has an external thread that is threaded to the connector 08, which allows for disassembly and maintenance.

[0044] Furthermore, the top surface of the front end of the gas valve body 01 is recessed to form a long strip-shaped first recess 0110. The outer surface of the right side wall of the first recess 0110 has a first locking block 0111 protruding from it, and the upper surface of the left side wall of the first recess 0110 has a second threaded hole 0112.

[0045] The piezoelectric igniter 07 is secured within the first recess 0110;

[0046] It also includes a 7-shaped cover plate 012. The right side of the cover plate 012 has a first through hole 0120. The first locking block 0111 is inserted into the first through hole 0120 and hooked in place. The cover plate 012 covers the first recess 0110. The bolt passes through the left end of the cover plate 012 and is connected and fixed to the second threaded hole 0112.

[0047] As described above, the cover plate 012 covers the first recess 0110 to protect the piezoelectric igniter 07; unscrew the bolt on the left side of the cover plate 012 and remove the first through hole 0120 from the first locking block 0111. This allows the cover plate 012 to be removed, facilitating assembly and ensuring a secure fixation so that the bolts will not come loose due to vibration.

[0048] In the description of this utility model, it should be understood that the terms "upper", "lower", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only used to facilitate the description of this utility model and simplify the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0049] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. In this utility model, unless otherwise expressly specified and limited, the terms "installation," "setting," "connection," "fixing," and "screw-on," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection.

[0050] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of protection of the present utility model. Therefore, all equivalent changes made to the structure, shape, and principle of the present utility model should be covered within the scope of protection of the present utility model.

Claims

1. A gas valve, characterized in that: It includes a gas valve body, with a rotary switch at the front end and a connected nozzle at the rear end. The rotary switch and the nozzle are arranged on the same axis. The gas valve body extends horizontally to the left rear end and connects to the first gas outlet pipe. An ignition tube is installed at the rear end of the first gas outlet pipe. The ignition tube is parallel to the nozzle and an ignition needle is installed above the ignition tube. The gas valve body extends vertically to the right rear end and connects to the first mounting base. A solenoid valve is installed in the first mounting base. A thermocouple is installed on the top of the first mounting base. The measuring end of the thermocouple is located next to the nozzle. The thermocouple is used to drive the solenoid valve. A piezoelectric igniter is installed on the top surface of the front end of the gas valve body, and the piezoelectric igniter is electrically connected to the ignition needle. The bottom of the gas valve body protrudes and has a connected air inlet pipe.

2. The gas valve according to claim 1, characterized in that: The nozzle is threaded to the gas valve body. The surface of the nozzle is a hexagonal prism, and the outer end of the nozzle is frustum-shaped. The nozzle is made of copper.

3. The gas valve according to claim 1, characterized in that: The rear end of the first air outlet pipe has a protruding first mounting block, and the first mounting block has a first threaded hole. The ignition tube includes a first gas passage, and a U-shaped first clamping plate protrudes from the left side of the front end of the first gas passage. The first clamping plate is fitted into the first mounting block, and a bolt passes through the first clamping plate and is connected and fixed to the first threaded hole. A first connecting plate protrudes from the left side of the first air passage. The first connecting plate has two pairs of claws protruding from it. The two pairs of claws are bent to clamp and fix the ignition needle.

4. The gas valve according to claim 3, characterized in that: A second connecting plate extends from the rear end of the first air passage. Two bent baffles extend inward from the edge of the second connecting plate, with a gap between them. The two baffles bend from front to back, narrowing the passage of the first air passage. The tip of the ignition needle is located above the second connecting plate.

5. The gas valve according to claim 1, characterized in that: The top of the first mounting base is threaded with a connector, and the top of the connector has an internal threaded hole. The guide end of the thermocouple is threadedly connected to the connector.

6. The gas valve according to claim 1, characterized in that: The front top surface of the gas valve body is recessed to form a long strip-shaped first recess. A first locking block protrudes from the outer surface of the right side wall of the first recess, and a second threaded hole is opened on the upper surface of the left side wall of the first recess. The piezoelectric igniter is secured within the first recess; It also includes a 7-shaped cover plate, with a first through hole on the right side of the cover plate. A first locking block is inserted into the first through hole to hook it in place. The cover plate covers the first recess, and a bolt passes through the left end of the cover plate and is connected and fixed to the second threaded hole.

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