Gas valve and stove suitable for dual gas sources

Abstract

The present invention discloses a dual-gas source gas valve, comprising: a valve body having a valve core cavity defined therein, an outlet defined on a sidewall of the valve body; a valve core provided with a first and second outlet hole groups adapted to cooperate with the outlet; a motor having an output shaft connected to the valve core; and a control circuit electrically connected to the motor. The apertures of the first and second outlet hole groups can be configured to correspond to natural gas and liquefied gas, respectively. This allows the motor to drive the valve core to rotate, switching between the first and second outlet hole groups to cooperate with the outlet for gas discharge, thereby enabling the gas valve to be adapted for use with either natural gas or liquefied gas. The present invention also discloses a stove, comprising a stove body equipped with the dual-gas source gas valve. This allows the stove to be adapted for use with either natural gas or liquefied gas, thus diversifying the gas sources available and reducing subsequent maintenance costs.

Description

Technical Field

[0001] The present invention relates to the field of kitchen stoves, and in particular to a gas valve and stove suitable for dual gas sources. Background Art

[0002] Currently, gas stoves on the market are categorized as natural gas stoves and liquefied gas stoves based on their gas source. Because liquefied gas and natural gas consume different amounts of oxygen during combustion, the gas valves used on natural gas stoves and liquefied gas stoves have different outlet sizes. Therefore, the gas valves for the two types of gas stoves should not be used interchangeably. Producing two different gas valves significantly increases production costs. Furthermore, installing inappropriate gas valves on natural gas stoves and liquefied gas stoves can lead to incomplete combustion and pose safety risks. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the first aspect of the present invention provides a gas valve that, depending on the gas source, can switch between a first or second gas outlet group and a gas outlet port to discharge gas, thereby being compatible with either natural gas or liquefied gas, and having a wide range of applications. The second aspect of the present invention provides a stove that utilizes the aforementioned dual-gas source gas valve, thereby enabling the stove to be compatible with either natural gas or liquefied gas, and having a wide range of applications.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0005] 20. The vent valve according to claim 19, wherein the at least one air vent of the second control valve is connected to the control valve body and the control valve body is connected to the control valve body.

[0006] Certain embodiments of the first aspect of the present invention provide a dual-gas source gas valve with at least the following beneficial effects: by providing a first air outlet group and a second air outlet group on the valve core, the apertures of the first air outlet group and the second air outlet group can be correspondingly set to sizes matching natural gas and liquefied gas, so that when the motor drives the valve core to rotate, the first air outlet group or the second air outlet group can be switched to cooperate with the air outlet to discharge gas, thereby making the gas valve applicable to natural gas or liquefied gas, with a wide range of applications, which not only reduces the production costs of the enterprise, but also reduces the cost of users' subsequent replacement of the gas valve.

[0007] According to some embodiments of the first aspect of the present invention, the motor is a stepper motor.

[0008] According to certain embodiments of the first aspect of the present invention, a touch switch is further provided on the valve body, a trigger plate is provided on the touch switch, and an extrusion piece capable of contacting the trigger plate is provided on the valve core or the output shaft of the motor.

[0009] According to certain embodiments of the first aspect of the present invention, one end of the valve core is provided with a connecting end extending to the outside of the valve core cavity, the touch switch is arranged at a position of the valve body adjacent to the connecting end, and a connecting piece that can rotate synchronously with it is detachably mounted on the connecting end, the connecting piece is provided with a connecting hole that can be connected to the output shaft of the motor, and the extrusion piece is arranged on the connecting piece.

[0010] According to certain embodiments of the first aspect of the present invention, the valve body is provided with a stop valve capable of automatically closing the air inlet when power is cut off.

[0011] According to certain embodiments of the first aspect of the present invention, an opening is provided at one end of the valve core cavity, the valve core passes through the opening and enters the interior of the valve core cavity, and a limiting mechanism is provided on the valve body for limiting the valve core from withdrawing from the interior of the valve core cavity.

[0012] According to certain embodiments of the first aspect of the present invention, the air outlet includes an inner ring fire air outlet and an outer ring fire air outlet; the first air outlet group and the second air outlet group both include a plurality of inner ring fire air outlets that can be used in pair with the inner ring fire air outlet and a plurality of outer ring fire air outlets that can be used in conjunction with the outer ring fire air outlet.

[0013] According to certain embodiments of the first aspect of the present invention, the two inner ring fire air outlets are independently connected to the air inlet channel, and one of the inner ring fire air outlets connected to the air inlet channel is connected in series with the remaining inner ring fire air outlets through multiple first connecting air channels, and the first connecting air channels are connected to the side walls of the two adjacent inner ring fire air outlets, and the cross-sectional area of ​​the multiple first connecting air channels gradually decreases along the circumference of the valve core.

[0014] According to certain embodiments of the first aspect of the present invention, one of the outer ring fire outlet holes is connected to the air inlet channel, and the outer ring fire outlet hole connected to the air inlet channel is connected in series with the remaining outer ring fire outlet holes through multiple second connecting air channels, and the second connecting air channels are connected to the side walls of two adjacent outer ring fire outlet holes, and the cross-sectional area of ​​the multiple second connecting air channels gradually decreases along the circumference of the valve core.

[0015] According to certain embodiments of the second aspect of the present invention, a stove includes a stove body, on which the above-mentioned gas valve suitable for dual gas sources is configured.

[0016] The stove of certain embodiments of the second aspect of the present invention has at least the following beneficial effects: by adopting the above-mentioned gas valve applicable to dual gas sources, the stove can be applicable to natural gas or liquefied gas, which not only makes the stove applicable to various gas sources but also reduces the subsequent maintenance cost of the stove. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0018] Figure 1 This is a schematic diagram of the appearance and structure of a gas valve suitable for dual gas sources in certain embodiments of the first aspect of the present invention;

[0019] Figure 2 for Figure 1 FIG. 1 is a schematic diagram of a partial structural decomposition of a gas valve suitable for dual gas sources;

[0020] Figure 3 for Figure 1 A cross-sectional view of the internal structure of a gas valve suitable for dual gas sources is shown in FIG;

[0021] Figure 4 for Figure 1 A schematic structural diagram of the valve core, the first gas outlet group, and the second gas outlet group in a gas valve suitable for dual gas sources is shown in FIG;

[0022] Figure 5 for Figure 1 Parts diagram of the valve core in the gas valve suitable for dual gas sources shown in FIG;

[0023] Figure 6 for Figure 5 Sectional view along line AA;

[0024] Figure 7 for Figure 5 Cross-sectional view along line BB. DETAILED DESCRIPTION

[0025] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but it should not be understood as a limitation on the scope of protection of the present invention.

[0026] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0027] In the description of the present invention, "several" means one or more, "more" means three or more, "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. The use of terms such as "first" and "second" is solely for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly specifying the number or order of the technical features indicated.

[0028] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0029] Reference Figures 1 to 4In certain embodiments of the first aspect of the present invention, a gas valve suitable for dual gas sources includes a valve body 100, a valve core cavity 110 is formed in the interior of the valve body 100, an air inlet 120 and an air outlet 130 are formed on the side wall of the valve body 100, both of which are connected to the valve core cavity 110, a valve core 200 is rotatably installed in the valve core cavity 110, an air inlet channel 210 connected to the interior of the valve core cavity 110 is formed on the valve core 200, and a first air outlet group 201 and a second air outlet group 202 that can be used in conjunction with the air outlet 130 are provided on the valve core 200, one of the first air outlet group 201 and the second air outlet group 202 can be set to be suitable for natural gas, and the other group can be set to be suitable for liquefied gas; the first air outlet group 201 and the second air outlet group 202 are both connected to the air inlet channel 210, and the first air outlet group 201 and the second air outlet group 202 are connected to the air inlet channel 210. The first and second vent groups 201 and 202 may contain a plurality of vent holes 203. The vent holes in the first vent group 201 and the vent holes in the second vent group 202 may be completely different, or the first and second vent groups 201 and 202 may contain some of the same vent holes 203. Figure 4 In certain embodiments of the first aspect of the present invention, the first air outlet group 201 and the second air outlet group 202 include five identical air outlet holes 203, that is, the second air outlet group 202 includes five air outlet holes 203, and the first air outlet group 201 also includes the five air outlet holes 203 of the second air outlet group 202. It can be imagined that the number of air outlet holes 203 included in the first air outlet group 201 and the second air outlet group 202 can be determined according to actual needs, without limiting the specific number.

[0030] The valve body 100 is provided with a motor 300, which is removably mounted thereon. Specifically, the motor 300 is screwed to the valve body 100. It is conceivable that the motor 300 can also be configured to be inseparable from the valve body 100, such as by welding the motor 300 to the valve body 100, depending on actual needs. The output shaft of the motor 300 is connected to the valve core 200 and can drive the valve core 200 to rotate relative to the valve body 100. The motor 300 is electrically connected to a control circuit (not shown) that can control the motor 300 to drive the valve core 200 to rotate in the forward or reverse direction.

[0031] By providing a first air outlet group 201 and a second air outlet group 202 on the valve core 200, the apertures of the first air outlet group 201 and the second air outlet group 202 can be correspondingly set to sizes matching natural gas and liquefied gas, so that when the motor 300 drives the valve core 200 to rotate, the first air outlet group 201 or the second air outlet group 202 can be switched to cooperate with the air outlet 130 to discharge gas, thereby making the gas valve applicable to natural gas or liquefied gas, with a wide range of applications, which not only reduces the production cost of the enterprise, but also reduces the cost of users' subsequent replacement of the gas valve.

[0032] Reference Figure 2 and Figure 3 To improve the precision with which the motor 300 drives the valve core 200, in certain embodiments of the first aspect of the present invention, the motor 300 is a stepper motor. By using a stepper motor to drive the valve core 200, the angle of rotation of the valve core 200 can be precisely controlled, thereby precisely adjusting the gas flow rate of the gas valve. Furthermore, using a stepper motor can reduce the impact of the high temperature generated by the stove on the motor 300, resulting in less interference.

[0033] Reference Figure 2 and Figure 3 To facilitate the control circuit's better sensing of the rotational position of the valve core 200, certain embodiments of the first aspect of the present invention further include a touch switch 400. The touch switch 400 is disposed on the valve body 100 and includes a trigger plate 410. A pressing member 500 is disposed on the valve core 200 or on the output shaft of the motor 300, capable of contacting the trigger plate 410. The touch switch 400 is electrically connected to the control circuit. When the motor 300 drives the valve core 200 to rotate, the pressing member 500 on the valve core 200 or on the output shaft of the motor 300 presses against the trigger plate 410. The touch switch 400 provides a feedback signal to the control circuit, allowing the control circuit to sense that the valve core 200 or the motor 300 is at an "origin" position. This "origin" position is a virtual position, equivalent to the starting point of the valve core 200's rotation. After the control circuit senses that the valve core 200 or the motor 300 is at the "origin" position, the control circuit can control the motor 300 to drive the valve core 200 to rotate the corresponding angle according to the user's input instructions, so as to switch the first air outlet group 201 or the second air outlet group 202 to cooperate with the air outlet 130 to exhaust or adjust the air outlet size of the air outlet 130, which is more convenient to use.

[0034] To simplify and facilitate the assembly and production of the gas valve, in certain embodiments of the first aspect of the present invention, a connecting end 230 extending to the exterior of the valve core cavity 110 is provided at one end of the valve core 200. The touch switch 400 is disposed on the valve body 100 adjacent to the connecting end 230. A connector 510 is detachably mounted on the connecting end 230, capable of synchronous rotation therewith. The connector 510 has a connecting hole 511 formed therein for connection to the output shaft of the motor 300. The output shaft of the motor 300 is inserted into the connecting hole 511, and the extrusion member 500 is disposed on the connector 510. Specifically, a locking block 520 and a locking slot 231 are disposed between the connecting end 230 and the connector 510, respectively, for engaging with each other. One of the locking block 520 and the locking slot 231 is disposed on the connecting end 230, and the other is disposed on the connector 510. That is, when the block 520 is disposed on the connecting end 230 , the slot 231 is disposed on the connecting member 510 ; if the block 520 is disposed on the connecting member 510 , the slot 231 is disposed on the connecting end 230 , which can be determined according to actual needs.

[0035] To facilitate the production of the extruded member 500 and the connector 510, in certain embodiments of the first aspect of the present invention, the extruded member 500 and the connector 510 are integrally formed, that is, they can be obtained by injection molding, which is simple, convenient, and fast.

[0036] Reference Figure 2 and Figure 3 In order to ensure the airtightness of the gas valve, in some embodiments of the first aspect of the present invention, one end of the valve core cavity 110 is opened, and the valve core 200 Passing through the opening and entering the interior of the valve core cavity 110, the valve body 100 is provided with a limiting mechanism for limiting the valve core 200 from withdrawing from the valve core cavity 110. Specifically, the limiting mechanism includes a mounting seat 140 arranged on the valve body 100, and the mounting seat 140 is arranged at one end of the valve body 100 adjacent to the opening of the valve core cavity 110. An elastic member 260 is sleeved on the connecting end 230 of the valve core 200, and one end of the elastic member 260 abuts against the valve core 200, and the other end abuts against the mounting seat 140. The elastic member 260 can exert force on the valve core 200 and push the valve core 200 to be embedded in the valve core cavity 110, so that the fit between the valve core 200 and the valve core cavity 110 is tighter, preventing gas leakage, and ensuring the air tightness of the gas valve in this embodiment. Even if the user removes the motor 300, it will not affect the air tightness of the gas valve. When the motor 300 is damaged, the user can remove and replace the motor 300 with a new one without affecting the air tightness of the gas valve. The elastic member 240 can be a compression spring, or the elastic member 240 can be an elastic column made of rubber or silicone.

[0037] Reference Figure 1 、 Figure 3 、 Figure 5 、 Figure 6 and Figure 7 To enable the gas valve to be used with burners having both inner and outer ring fire gas ducts, in certain embodiments of the first aspect of the present invention, the gas outlet 130 includes an inner ring fire gas outlet 131 and an outer ring fire gas outlet 132; and the first gas outlet group 201 and the second gas outlet group 202 each include a plurality of inner ring fire gas outlets 221 that can be used in conjunction with the inner ring fire gas outlet 131, and a plurality of outer ring fire gas outlets 222 that can be used in conjunction with the outer ring fire gas outlet 132. By adopting the above-described structure, the gas valve of this embodiment can supply gas to both the inner and outer ring fire gas ducts, resulting in a simpler structure and easier use.

[0038] Reference Figure 5 and Figure 6 Furthermore, in order to prevent the gas from directly passing through the inner ring fire outlet hole 221 from the air inlet channel 210 and being sprayed into the inner ring fire outlet port 131, in certain embodiments of the first aspect of the present invention, the two inner ring fire outlet holes 221 are independently connected to the air channel 210, and one of the inner ring fire outlet holes 221 connected to the air inlet channel 210 is connected in series with the remaining inner ring fire outlet holes 221 through multiple first connecting air channels 240. The first connecting air channels 240 are connected to the side walls of two adjacent inner ring fire outlet holes 221, and the cross-sectional area of ​​the multiple first connecting air channels 240 gradually decreases along the circumference of the valve core 200. By adopting the above-mentioned structure, most of the gas can enter the inner ring fire outlet hole 221 through the first connecting air channel 240, avoiding the gas from directly passing through the inner ring fire outlet hole 221 from the air inlet channel 210 and being sprayed into the inner ring fire outlet port 131. Therefore, when the valve core 200 is rotated to adjust the gas output size of the gas valve, the change of the gas can be smoother, so that when the stove adopts the gas valve of this embodiment, when adjusting the inner ring fire size, the change of the inner ring fire is smoother and no drastic changes will occur, thereby ensuring safety.

[0039] Reference Figure 5 and Figure 7To ensure smoother gas flow from the outer ring flame outlet 132 of the gas valve, in certain embodiments of the first aspect of the present invention, one of the outer ring flame outlet holes 222 is connected to the air inlet 210. This outer ring flame outlet hole 222 connected to the air inlet 210 is serially connected to the remaining outer ring flame outlet holes 222 via a plurality of second connecting air passages 250. The second connecting air passages 250 connect to the sidewalls of two adjacent outer ring flame outlet holes 222, and the cross-sectional areas of the plurality of second connecting air passages 250 gradually decrease along the circumference of the valve core 200. This structure allows for smoother gas flow from the outer ring flame outlet 132, ensuring smoother changes in the outer ring flame size when adjusting the outer ring flame size in a stove employing a gas valve according to this embodiment, without drastic fluctuations, thus ensuring safety.

[0040] Reference Figures 1 to 3 To ensure safety, the valve body 100 is equipped with a shutoff valve 150 that controls the opening and closing of the air inlet 120. The shutoff valve 150 is electrically connected to the control circuit. If the stove experiences an abnormality, the shutoff valve 150 closes the air inlet 120, thereby preventing gas leakage from the stove. The shutoff valve 150 can be a solenoid valve that is normally closed when de-energized.

[0041] A gas cooker in some embodiments of the second aspect of the present invention includes a cooker body (not shown in the figures), on which the aforementioned gas valve suitable for dual gas sources is disposed.

[0042] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by ordinary technicians in the technical field without departing from the scope of the present invention.

Claims

1. A gas valve suitable for dual gas sources, characterized in that: include: A valve body (100) is provided with a valve core cavity (110) therein, and a side wall of the valve body (100) is provided with an air inlet (120) and an air outlet (130) both of which are in communication with the valve core cavity (110); The valve core (200) is rotatably mounted in the valve core cavity (110), and an air inlet channel (210) communicating with the interior of the valve core cavity (110) is provided on the valve core (200). The valve core (200) is provided with a first air outlet hole group (201) and a second air outlet hole group (202) capable of being used in conjunction with the air outlet (130), and the first air outlet hole group (201) and the second air outlet hole group (202) are both communicated with the air inlet channel (210). a motor (300) disposed on the valve body (100), wherein an output shaft of the motor (300) is connected to the valve core (200) and can drive the valve core (200) to rotate relative to the valve body (100); a control circuit, the control circuit being electrically connected to the motor (300), and the control circuit being capable of controlling the motor (300) to drive the valve core (200) to rotate forward or reverse; The air outlet (130) includes an inner ring fire air outlet (131) and an outer ring fire air outlet (132); The first air outlet group (201) and the second air outlet group (202) each include a plurality of inner ring fire air outlets (221) that can be used in conjunction with the inner ring fire air outlet (131) and a plurality of outer ring fire air outlets (222) that can be used in conjunction with the outer ring fire air outlet (132); The apertures of the first gas outlet hole group (201) and the second gas outlet hole group (202) can be correspondingly set to sizes matching natural gas and liquefied gas, so that when the motor (300) drives the valve core (200) to rotate, the first gas outlet hole group (201) or the second gas outlet hole group (202) can be switched to cooperate with the gas outlet (130) to discharge gas, thereby making the gas valve suitable for natural gas or liquefied gas.

2. The dual-gas source gas valve according to claim 1, characterized in that: The motor (300) is a stepping motor.

3. The dual-gas source gas valve according to claim 2, characterized in that: It also includes a touch switch (400) disposed on the valve body (100), wherein the touch switch (400) is provided with a trigger sheet (410). An extrusion piece (500) capable of contacting the triggering piece (410) is provided on the valve core (200) or on the output shaft of the motor (300).

4. The gas valve suitable for dual gas sources according to claim 3, characterized in that: One end of the valve core (200) is provided with a connecting end portion (230) extending to the outside of the valve core cavity (110). The touch switch (400) is provided at a position of the valve body (100) adjacent to the connecting end (230). A connecting piece (510) capable of rotating synchronously with the connecting end (230) is detachably mounted on the connecting end portion (230), a connecting hole (511) capable of being connected to the output shaft of the motor (300) is provided on the connecting piece (510), and the extrusion piece (500) is arranged on the connecting piece (510).

5. The dual-gas source gas valve according to claim 1, characterized in that: The valve body (100) is provided with a stop valve (150) capable of automatically closing the air inlet (120) when power is cut off.

6. The dual-gas source gas valve according to claim 1, characterized in that: An opening is provided at one end of the valve core cavity (110), and the valve core (200) passes through the opening and enters the interior of the valve core cavity (110). A limiting mechanism is provided on the valve body (100) for limiting the valve core (200) from withdrawing from the interior of the valve core cavity (110).

7. The dual-gas source gas valve according to claim 1, characterized in that: The two inner ring fire outlet holes (221) are independently connected to the air inlet channel (210). One of the inner ring fire outlet holes (221) connected to the air inlet channel (210) is connected in series with the rest of the inner ring fire outlet holes (221) through a plurality of first connecting air channels (240), the first connecting air channels (240) are connected to the side walls of two adjacent inner ring fire outlet holes (221), and the cross-sectional area of ​​the plurality of first connecting air channels (240) gradually decreases along the circumference of the valve core (200).

8. The gas valve suitable for dual gas sources according to claim 1, characterized in that: One of the outer ring fire outlet holes (222) is connected to the air inlet channel (210), and the outer ring fire outlet hole (222) connected to the air inlet channel (210) is connected in series with the remaining outer ring fire outlet holes (222) through multiple second connecting air channels (250), and the second connecting air channels (250) are connected to the side walls of two adjacent outer ring fire outlet holes (222), and the cross-sectional area of ​​the multiple second connecting air channels (250) gradually decreases along the circumference of the valve core (200).

9. A gas cooker, characterized in that: The stove comprises a main body, on which is arranged a gas valve applicable to dual gas sources as claimed in any one of claims 1 to 8.

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