Gas valve and stove

Abstract

The invention discloses a gas valve and a stove, the gas valve comprises a valve body provided with a valve core cavity, a gas inlet channel and a gas outlet channel, and the gas inlet channel and the gas outlet channel intersect in the valve core cavity; the valve element is rotationally mounted in the valve element cavity so as to adjust the air outlet flow; one end of the valve rod extends into the valve body, is combined with the valve element and is used for operating the valve element to rotate; the circuit board is provided with a trigger circuit, the trigger circuit is provided with a first contact terminal and a second contact terminal which are arranged on the circuit board and separated from each other, when the first contact terminal and the second contact terminal are conducted, the trigger circuit forms a loop to output a trigger signal, and the circuit board comprises a base layer, a circuit layer and a solder mask layer. Windowing the solder mask layer to expose the circuit layer to form a first contact terminal and a second contact terminal; the linkage piece rotates synchronously with the valve rod and is provided with a conductive piece which makes contact with the first contact terminal and the second contact terminal in the rotating process of the valve rod to conduct the first contact terminal and the second contact terminal. The trigger signal can be used for indicating the peripheral equipment to work.

Description

Technical Field

[0001] The present application relates to the technical field of gas appliances, and in particular to a gas valve and a stove. Background Art

[0002] The gas valve is one of the most important parts in gas appliances. It generally includes a valve body, a valve core and a valve stem. The valve body has a valve core cavity. The valve core is rotatably installed in the valve core cavity. The air inlet channel and the air outlet channel intersect in the valve core cavity. One end of the valve stem extends into the valve body and is combined with the valve core to operate the rotation of the valve core. When the valve stem rotates with the valve core, the flow area of ​​the air inlet channel and the air outlet channel changes, causing the gas output by the valve body to change accordingly.

[0003] When the stove is in use, the gas valve is pressed and rotated to open by the operator. At this time, it is generally necessary to turn on peripheral equipment such as the pulse igniter, fan or display screen at the same time. For example, the adjustable gear plug valve disclosed in publication number CN220668467U turns on the pulse igniter by pressing the micro switch through the valve stem linkage, but this type of valve stem linkage peripheral equipment increases the production cost. Summary of the invention

[0004] Based on this, it is necessary to provide a gas valve and a stove to address the above technical problems.

[0005] The gas valve of this application comprises: A valve body, comprising a valve core cavity and an air inlet passage and an air outlet passage intersecting the valve core cavity; A valve core is rotatably mounted in the valve core cavity to adjust the air outlet flow rate; A valve stem, one end of which extends into the valve body and is combined with the valve core, and is used to control the rotation of the valve core; A circuit board with a trigger circuit, wherein the trigger circuit has two first contact terminals and a second contact terminal that are arranged on the circuit board and separated from each other, wherein when the first contact terminal and the second contact terminal are turned on, the trigger circuit forms a loop and outputs a trigger signal, wherein the circuit board comprises a base layer, a circuit layer and a solder resist layer, wherein a window is opened in the solder resist layer to expose the circuit layer to form the first contact terminal and the second contact terminal; The linkage member rotates synchronously with the valve stem and comprises a conductive member which contacts and conducts the first contact terminal and the second contact terminal during the rotation of the valve stem.

[0006] Several optional methods are also provided below, but they are not intended to be additional limitations on the above-mentioned overall solution, but are merely further supplements or preferences. Under the premise that there are no technical or logical contradictions, each optional method can be combined with the above-mentioned overall solution separately, and multiple optional methods can also be combined.

[0007] Optionally, the first contact terminal and the second contact terminal are arc-shaped structures arranged around the valve stem, and the circuit board is arranged perpendicular to the valve stem and has a through hole for the valve stem to pass through.

[0008] Optionally, the valve body includes a valve seat with the valve core cavity, and a box body also serving as a valve cover, the box body is fixedly connected to the valve seat to close the valve core cavity, and the circuit board is arranged in the box body.

[0009] Optionally, the linkage member is sleeved on the valve stem and placed inside the box body, the box body includes a box body and a cover plate, and the linkage member is axially constrained by the cover plate so that the conductive member contacts the contact terminal and is energized.

[0010] Optionally, the conductive member includes a plurality of balls that are in contact with corresponding contact terminals and are energized.

[0011] Optionally, the circuit board is provided with a firepower gear detection circuit, the firepower gear detection circuit has a third contact terminal and a fourth contact terminal arranged on the circuit board, the solder resist layer has windows exposing the circuit layer to form the third contact terminal and the fourth contact terminal, the fourth contact terminal is a multi-segment structure, when different segments of the third contact terminal and the fourth contact terminal are connected by the conductive member, the firepower gear detection circuit outputs different gear signals.

[0012] Optionally, the first contact terminal and the third contact terminal overlap and are grounded.

[0013] The present application provides a cooker, comprising the gas valve as described in the present application, an ignition distributor connected to the gas valve, and a pulse igniter arranged near the ignition distributor, wherein the trigger signal is used to trigger the pulse igniter to operate.

[0014] Optionally, the circuit board has a main controller, and the main controller is configured to control the operation of the pulse igniter accordingly after receiving the trigger signal.

[0015] Optionally, the circuit board is provided with a firepower gear position detection circuit, the firepower gear position detection circuit has a third contact terminal and a fourth contact terminal arranged on the circuit board, the solder resist layer is opened to expose the circuit layer to form the third contact terminal and the fourth contact terminal, the fourth contact terminal is a multi-segment structure, and when different segments of the third contact terminal and the fourth contact terminal are connected by the conductive member, the firepower gear position detection circuit outputs different gear position signals; The cooker includes a display unit, and the main controller is configured to control the display unit to display a corresponding fire power level after receiving the level signal.

[0016] The gas valve and stove of the present application have at least the following technical effects: The present application embeds the trigger circuit in the circuit board. When the first contact terminal and the second contact terminal on the circuit board surface are connected, the trigger circuit outputs a trigger signal, which can be used to instruct corresponding peripheral devices such as a display unit, a pulse igniter, a fan, etc. to work. This embodiment does not require the use of external switches such as micro switches, thereby reducing production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of a gas valve in one embodiment of the present application; Figure 2 for Figure 1 3D assembly drawing of Figure 3 for Figure 1 3D assembly drawing of Figure 4 for Figure 3 A schematic diagram from another angle; Figure 5 This is a schematic diagram of the matching relationship between the circuit board and the conductive member in the gas valve in one embodiment of the present application; Figure 6 This is a schematic diagram of the planar structure of a circuit board in a gas valve in one embodiment of the present application; Figure 7 This is a schematic diagram of the layered structure of a circuit board in a gas valve in one embodiment of the present application; Figure 8 This is a schematic diagram of the module structure of a stove in one embodiment of the present application; Fig. 9 This is a schematic diagram of the structure of a fire distributor in a stove in one embodiment of the present application; The reference numerals in the figures are described as follows: 100, valve seat; 101, valve core cavity; 102, air inlet channel; 103, air outlet channel; 104, positioning member; 200, box body; 210, box body; 220, cover plate; 300, valve stem; 400, circuit board; 401, trigger circuit; 402, fire power level detection circuit; 403, through hole; 404, positioning hole; 405, base layer; 406, circuit layer; 407, solder resist layer; 410, first contact terminal; 420, second contact terminal; 430, third contact terminal; 440, fourth contact terminal; 500, linkage member; 510, conductive member; 511, ball; 512, connecting member; 513, ball groove; 600, pulse igniter; 700, main controller; 800, display unit; 900, ignition distributor; 910, inner ring; 920, outer ring. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0019] It should be noted that when a component is referred to as being "connected" to another component, it may be directly connected to the other component or there may be a central component. When a component is referred to as being "disposed on" another component, it may be directly disposed on the other component or there may be a central component at the same time.

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0021] In this application, the terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number or order of the indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0022] In this application, the terms "comprises" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a system, product or device comprising a series of units is not necessarily limited to those units explicitly listed, but may include other units not explicitly listed or inherent to these products or devices.

[0023] In the present application, the terms "corresponding", "corresponding", "matching", "adaptable", such as "B corresponding to A", "B corresponding to A", "A corresponds to B", or "B corresponds to A", indicate that B has a corresponding relationship with A in shape, position or function, and B can be determined according to A. Determining B according to A does not mean determining B only according to A, but B can also be determined according to A and / or other information.

[0024] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, an electrical connection, or can communicate with each other; it can be directly connected, or indirectly connected through an intermediate medium, so that the internal connection of two elements or the interaction relationship between two elements can be achieved. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0025] See also Figure 1 to Figure 7 An embodiment of the present application provides a gas valve, which includes a valve body, a valve core and a valve stem 300. The valve body has a valve core cavity 101 and an air inlet channel 102 and an air outlet channel 103 intersecting the valve core cavity 101. The valve core is rotatably installed in the valve core cavity 101 to adjust the air outlet flow rate. One end of the valve stem 300 extends into the valve body and is combined with the valve core to control the rotation of the valve core.

[0026] The valve body includes a valve seat 100 with a valve core cavity 101, and a box body 200 which also serves as a valve cover. The box body 200 is fixedly connected to the valve seat 100 to close the valve core cavity 101. The circuit board 400 is arranged in the box body 200. The linkage member 500 is sleeved on the valve stem 300 and is placed inside the box body 200. The box body 200 includes a box body 210 and a cover plate 220. The linkage member 500 is axially constrained by the cover plate 220 so that the conductive member 510 contacts the contact terminal and is energized.

[0027] The gas valve further includes a circuit board 400 and a linkage 500. The circuit board 400 is provided with a trigger circuit 401, and the trigger circuit 401 has two first contact terminals 410 and a second contact terminal 420 which are arranged on the circuit board 400 and separated from each other, and the separation from each other completes circuit isolation. When the first contact terminal 410 and the second contact terminal 420 are turned on, the trigger circuit 401 forms a loop and outputs a trigger signal. Specifically, the first contact terminal 410 and the second contact terminal 420 are both arc-shaped structures arranged around the valve stem 300. The circuit board 400 is arranged perpendicular to the valve stem 300, and the circuit board 400 has a through hole 403 for the valve stem 300 to pass through.

[0028] The exposed areas of the first contact terminal 410 and the second contact terminal 420 on the surface of the circuit board 400 can be increased as needed, so that the first contact terminal 410 and the second contact terminal 420 respectively form arc-shaped areas with the through hole 403 as the center as shown in the figure. The circuit board 400 is provided with a positioning hole 404 for installation and positioning, and the box body 200 is provided with a positioning member 104 for matching with the positioning hole 404.

[0029] The linkage member 500 rotates synchronously with the valve stem 300, and the linkage member 500 has a conductive member 510 that contacts and conducts two contact terminals during the rotation of the valve stem 300. Specifically, the conductive member 510 includes a plurality of balls 511 that are in contact with corresponding contact terminals and are energized. The balls 511 of the conductive member 510 are connected to each other through the connecting member 512, and when different balls 511 contact different contact terminals respectively, the two contact terminals form a passage.

[0030] In this embodiment, the trigger circuit 401 is built into the circuit board 400. When the first contact terminal 410 and the second contact terminal 420 on the surface of the circuit board 400 are connected, the trigger circuit 401 outputs a trigger signal, which can be used to instruct corresponding peripheral devices such as the display unit 800, the pulse igniter 600, the fan, etc. to work. In this embodiment, there is no need to use a trigger switch such as a micro switch, thereby reducing production costs.

[0031] Furthermore, the linkage member 500 is made of insulating material as a whole, and can be provided with ball grooves 513 for different balls 511 to move. The linkage member 500 is also provided with a connecting member 512 for connecting with all balls 511 in an electric circuit. For example, the connecting member 512 passes through the bottom of all ball grooves 513 for connecting with all balls 511 in an electric circuit. A metal elastic member, such as a metal spring, can be provided between the connecting member 512 and each ball 511 to push the ball 511 so that the head of the ball 511 protrudes from the surface of the linkage member 500. The ball groove 513 has a reduced diameter section that limits the ball 511 from escaping and allows the head of the ball 511 to protrude from the surface of the linkage member 500.

[0032] See also Figures 6-7 The circuit board 400 specifically includes a base layer 910, a circuit layer 920 and a solder resist layer 930. The solder resist layer 930 has windows to expose the circuit layer 920 to form a first contact terminal 410 and a second contact terminal 420. It can be understood that the circuit layer of the circuit board 400 is not required to exist everywhere.

[0033] In some embodiments, the circuit board 400 is provided with a firepower gear detection circuit 402, and the firepower gear detection circuit 402 has a third contact terminal 430 and a fourth contact terminal 440 arranged on the circuit board 400, and the solder mask layer is opened to expose the circuit layer to form the third contact terminal 430 and the fourth contact terminal 440. Furthermore, the first contact terminal 410 and the third contact terminal 430 overlap and are grounded, that is, the two are the same conductive area. The fourth contact terminal 440 is a multi-segment structure, and when different segments of the third contact terminal 430 and the fourth contact terminal 440 are connected by the conductive member 510, the firepower gear detection circuit 402 outputs different gear signals. The multi-segment division of the fourth contact terminal 440 corresponds to the rotation angle of the valve stem 300, indicating different firepower gears.

[0034] See also Figure 8-Figure 9 , an embodiment of the present application provides a stove, the stove includes the gas valve provided in each embodiment, and the igniter 900 connected to the gas valve, the pulse igniter 600 and the display unit 800 arranged near the igniter. The trigger signal of the trigger circuit 401 is used to trigger the pulse igniter 600 to work, and the gear signal of the firepower gear detection circuit 402 is used to trigger the display unit 800 to display the corresponding firepower gear. The igniter 900 includes an inner ring 910 and an outer ring 920, and the ignition needle of the pulse igniter 600 is placed between the inner ring 910 and the outer ring 920 for igniting the flame. Specifically, the circuit board is provided with a main controller 700, and the main controller 700 can be implemented by a single chip microcomputer, for example. The main controller 700 is configured to control the pulse igniter 600 to work accordingly after receiving the trigger signal, and to control the display unit 800 to display the corresponding firepower gear accordingly after receiving the gear signal.

[0035] The technical features of the above-mentioned embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification. When the technical features in different embodiments are embodied in the same figure, it can be regarded that the figure also discloses the combination examples of the various embodiments involved.

[0036] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent application. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application.

Claims

1. A gas valve, characterized in that: include: A valve body, comprising a valve core cavity and an air inlet passage and an air outlet passage intersecting the valve core cavity; A valve core is rotatably mounted in the valve core cavity to adjust the air outlet flow rate; A valve stem, one end of which extends into the valve body and is combined with the valve core, and is used to control the rotation of the valve core; A circuit board with a trigger circuit, wherein the trigger circuit has two first contact terminals and a second contact terminal that are arranged on the circuit board and separated from each other, wherein when the first contact terminal and the second contact terminal are turned on, the trigger circuit forms a loop and outputs a trigger signal, wherein the circuit board comprises a base layer, a circuit layer and a solder resist layer, wherein a window is opened in the solder resist layer to expose the circuit layer to form the first contact terminal and the second contact terminal; The linkage member rotates synchronously with the valve stem and comprises a conductive member which contacts and conducts the first contact terminal and the second contact terminal during the rotation of the valve stem.

2. The gas valve according to claim 1, characterized in that: The first contact terminal and the second contact terminal are arc-shaped structures arranged around the valve stem, and the circuit board is arranged perpendicular to the valve stem and has a through hole for the valve stem to pass through.

3. The gas valve according to claim 1, characterized in that: The valve body comprises a valve seat with the valve core cavity and a box body also serving as a valve cover. The box body is fixedly connected to the valve seat to close the valve core cavity. The circuit board is arranged in the box body.

4. The gas valve according to claim 3, characterized in that: The linkage piece is sleeved on the valve stem and placed inside the box body. The box body includes a box body and a cover plate. The linkage piece is axially constrained by the cover plate so that the conductive piece contacts the contact terminal and is energized.

5. The gas valve according to claim 1, characterized in that: The conductive member includes a plurality of balls that are in contact with corresponding contact terminals and are electrically conductive.

6. The gas valve according to claim 1, characterized in that: The circuit board is provided with a firepower gear detection circuit, and the firepower gear detection circuit has a third contact terminal and a fourth contact terminal arranged on the circuit board. The solder resist layer has a window to expose the circuit layer to form the third contact terminal and the fourth contact terminal. The fourth contact terminal is a multi-segment structure. When different segments of the third contact terminal and the fourth contact terminal are connected by the conductive member, the firepower gear detection circuit outputs different gear signals.

7. The gas valve according to claim 6, characterized in that: The first contact terminal and the third contact terminal overlap and are grounded.

8. A cooking appliance, characterized in that: It comprises a gas valve as claimed in any one of claims 1 to 7, an igniter connected to the gas valve, and a pulse igniter arranged near the igniter, wherein the trigger signal is used to trigger the pulse igniter to operate.

9. The cooker according to claim 8, characterized in that: The circuit board is provided with a main controller, and the main controller is configured to control the pulse igniter to work accordingly after receiving the trigger signal.

10. The cooker according to claim 9, characterized in that: The circuit board is provided with a firepower gear position detection circuit, the firepower gear position detection circuit has a third contact terminal and a fourth contact terminal arranged on the circuit board, the solder resist layer is opened to expose the circuit layer to form the third contact terminal and the fourth contact terminal, the fourth contact terminal is a multi-segment structure, and when different segments of the third contact terminal and the fourth contact terminal are connected by the conductive member, the firepower gear position detection circuit outputs different gear position signals; The cooker includes a display unit, and the main controller is configured to control the display unit to display a corresponding fire power level after receiving the level signal.

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