Gas stove and method for adjusting fire power state of gas stove

Abstract

The present invention provides a gas stove and a method for adjusting the fire power state of a gas stove. The gas stove includes: a burner including a fire cover and a flame distributor, the top surface of the flame distributor being ringed with a plurality of shielding teeth, and the fire cover ring being ringed with a plurality of fire holes; a drive mechanism connected to the fire cover; a gas valve assembly having a valve stem; and a controller in communication with the drive mechanism. The controller is adapted to obtain fire power state information of the gas stove and, based on the fire power state information, control the drive mechanism to rotate the fire cover until the fire holes are at least partially shielded by or avoid the shielding teeth. The gas stove and the method for adjusting the fire power state of the gas stove obtain the fire power state information of the gas stove and control the rotation angle of the fire cover based on the fire power state information, so that when the gas stove is adjusted to a low fire state, some of the fire holes of the fire cover are automatically closed, thereby improving the heat intensity of the fire holes in the low fire state.

Description

Technical Field

[0001] The present invention relates to the technical field of gas stoves, and in particular to a gas stove and a method for adjusting the firepower state of the gas stove. Background Art

[0002] A gas stove is a kitchen appliance that burns gas to release heat for home cooking. Because cooking requires varying degrees of heat, most gas stoves have a power adjustment function that allows you to adjust the heat level.

[0003] Currently, when a gas stove is set to a low power setting, the reduced gas flow and decreased heat intensity of the flame holes cause the stove to be unstable and prone to flameout and flashback. To avoid flashback and flameout, the only way is to limit the range of the power adjustment to avoid setting the power to a low setting. Summary of the Invention

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the technical defect of the existing technology that the firepower adjustment range is small, thereby providing a gas stove with an increased firepower adjustment range.

[0005] In order to solve the above technical problems, the present invention provides a gas stove, comprising: a burner, the burner including a fire cover and a fire divider, the top surface ring of the fire divider is provided with a plurality of shielding teeth, and the fire cover ring is provided with a plurality of fire holes; a driving mechanism connected to the fire cover; a gas valve group, provided with a valve stem; a controller, communicatively connected to the driving mechanism, the controller being suitable for obtaining fire power status information of the gas stove, so as to control the driving mechanism to drive the fire cover to rotate until the fire holes are at least partially shielded by the shielding teeth or avoid the shielding teeth according to the fire power status information.

[0006] Optionally, the gas stove further comprises: a position detection device adapted to detect the position of the valve stem to obtain position information of the valve stem and send the position information to the controller, so that the controller obtains the fire power status information according to the position information.

[0007] Optionally, the position detection device includes a potentiometer, and the potentiometer is provided with a mounting hole that is adapted to the shape of the cross section of the valve stem so as to be connected to the valve stem.

[0008] Optionally, the fire cover includes: an outer ring fire cover, provided on the fire distributor; a central fire cover, provided on the fire distributor, and the central fire cover is located in the central hole of the outer ring fire cover; wherein the driving mechanism is suitable for driving the central fire cover to rotate.

[0009] Optionally, the driving mechanism includes: a driving motor provided with a rotation output part; a rotating rod connected to the rotation output part, and the top end of the rotating rod is connected to the fire cover.

[0010] Optionally, a protrusion is provided on the outer periphery of the top of the rotating rod, and a connecting hole and a limiting groove connected to the connecting hole are provided in the fire cover, and the limiting groove is adapted to the protrusion.

[0011] Optionally, the protrusion includes two bosses, and the two bosses are arranged on opposite sides of the rotating rod.

[0012] Optionally, the driving mechanism drives the fire cover to rotate forward by a preset angle so that the fire outlet is at least partially shielded by the shielding teeth, or the driving mechanism drives the fire cover to rotate backward by a preset angle so that the fire outlet avoids the shielding teeth.

[0013] Optionally, the gas stove further comprises: a bottom shell provided with a plurality of burner areas, each of the burner areas being provided with one burner.

[0014] Therefore, the technical problem to be solved by the present invention is to overcome the technical defect of the existing technology that the firepower range is small, thereby providing a method for adjusting the firepower state of a gas stove.

[0015] In order to solve the above technical problems, the present invention provides a method for adjusting the fire power status of a gas stove, including: obtaining fire power status information of the gas stove; controlling a driving mechanism to drive the fire cover to rotate according to the fire power status information until the fire outlet is at least partially blocked by the blocking teeth or avoids the blocking teeth.

[0016] Optionally, the method for adjusting the firepower state of a gas stove further includes: acquiring position information of a valve stem; and acquiring the firepower state information according to the position information.

[0017] Optionally, the controlling of the driving mechanism according to the fire power status information drives the fire cover to rotate until the fire hole is at least partially blocked by the blocking teeth or avoids the blocking teeth, specifically including: obtaining first position information when the valve stem is rotated to adjust the flame of the burner to a low fire state; controlling the driving mechanism according to the first position information to drive the center fire cover of the fire cover to rotate forward by a first angle, so that the fire hole is at least partially blocked by the blocking teeth; or obtaining second position information when the valve stem is rotated to adjust the flame of the burner to a high fire state; controlling the driving mechanism according to the second position information to drive the center fire cover of the fire cover to rotate reversely by a second angle, so that the fire hole is unblocked.

[0018] The technical solution of the present invention has the following advantages:

[0019] 1. The gas stove provided by the present invention obtains the position information of the valve stem, thereby controlling the rotation angle of the fire cover according to the position information of the valve stem, so that when the fire power of the gas stove is adjusted to a low fire state, part of the fire holes of the fire cover are automatically closed, thereby improving the thermal intensity of the fire holes in the low fire state, solving the defects of the gas stove in the low fire state such as poor stability, easy flameout and flashback, etc., increasing the fire power adjustment range of the gas stove and improving the applicability of the gas stove.

[0020] 2. The gas stove provided by the present invention has a simple and reliable structure by arranging shielding teeth in the fire distributor to shield the fire outlet. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 A schematic diagram of the three-dimensional structure of a gas stove provided in one embodiment of the present invention;

[0023] Figure 2 A schematic diagram of the explosion structure of a gas stove provided in one embodiment of the present invention;

[0024] Figure 3 A schematic cross-sectional view of a burner of a gas stove provided in one embodiment of the present invention;

[0025] Figure 4 for Figure 3 A in the figure shows the enlarged structural diagram;

[0026] Figure 5 A schematic diagram of the three-dimensional structure of a flame distributor of a burner of a gas stove provided in one embodiment of the present invention;

[0027] Figure 6 A schematic diagram of the three-dimensional structure of a center flame cover of a burner of a gas stove provided in one embodiment of the present invention;

[0028] Figure 7 A schematic diagram of the connection structure of a position detection device for a gas stove provided in one embodiment of the present invention;

[0029] Figure 8 A schematic diagram of the three-dimensional structure of a driving mechanism of a gas stove provided in one embodiment of the present invention;

[0030] Figure 9A flow chart of a method for adjusting the firepower state of a gas stove provided in one embodiment of the present invention;

[0031] Figure 10 This is a flow chart of a method for adjusting the firepower state of a gas stove provided in another embodiment of the present invention.

[0032] Description of reference numerals:

[0033] 1- base; 2- gas valve group; 3- controller; 4- burner;

[0034] 5-position detection device; 6-driving mechanism;

[0035] 21-valve stem;

[0036] 41-fire cover; 42-fire distributor; 43-burner head;

[0037] 401-fire hole; 402-connection hole;

[0038] 411-Center fire cover; 412-Outer ring fire cover;

[0039] 421-blocking tooth;

[0040] 51-mounting hole;

[0041] 61-driving motor; 62-rotating rod;

[0042] L-Center axis. DETAILED DESCRIPTION

[0043] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0044] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0045] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0046] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0047] Example 1

[0048] like Figure 1 and Figure 2 As shown, a gas stove includes: a burner 4, a driving mechanism 6, a gas valve group 2 and a controller 3, the burner 4 includes a fire cover 41 and a fire divider 42, the top surface of the fire divider 42 is provided with a plurality of shielding teeth 421, the fire cover 41 is provided with a plurality of fire holes 401, the driving mechanism 6 is connected to the fire cover 41, the driving mechanism 6 is suitable for driving the fire cover 41 to rotate, the gas valve group 2 is provided with a valve stem 21, the controller 3 is communicatively connected with the driving mechanism 6, and the controller 3 is suitable for obtaining the fire power status information of the gas stove, so as to control the driving mechanism 6 to drive the fire cover 41 to rotate until the fire hole 401 is at least partially shielded by the shielding teeth 421 or avoids the shielding teeth 421 according to the fire power status information.

[0049] The gas valve assembly 2 is used to turn the gas stove on and off and adjust the flame size. The burner 4 is used to output gas and burn it to heat cooking utensils. The controller 4 is used to ignite and control the operation of the motor assembly. The gas stove's firepower status can be characterized by the burning time and firepower of the burner 4. The projections of the fire hole 401 and the shielding teeth 421 on the cross-section of the fire hole 401 at least partially overlap or completely do not overlap. When the projections of the fire hole 401 and the shielding teeth 421 on the cross-section of the fire hole 401 at least partially overlap, the fire hole 401 is at least partially blocked by the shielding teeth 421, thereby reducing the fire area. This reduces the amount of air intake and the fire area, thereby changing the fire intensity of the fire hole 401. When the projections of the fire hole 401 and the shielding teeth 421 on the cross-section of the fire hole 401 do not overlap at all, the fire hole 401 can avoid the shielding teeth 421 and fire from the fire hole 401 normally. Among them, such as Figure 4As shown, the cross section of the fire hole 401 is perpendicular to the central axis L of the fire hole 401. The fire cover 41, by acquiring the gas stove's power status information, the drive mechanism 6, and the controller 3, is linked with the valve stem 21. This allows the fire cover 41 to adjust the fire intensity by changing the fire area of the fire hole 401. This addresses the gas stove's poor stability at low power, prone to flameout, and flashback, thereby extending the gas stove's power adjustment range and improving its applicability.

[0050] Furthermore, if Figure 5 As shown, the burner 4 further includes a flame distributor 42, and a plurality of shielding teeth 421 are arranged around the top surface of the flame distributor 42. The shielding teeth 421 are adapted to at least partially shield the corresponding fire outlet 401 or avoid the corresponding fire outlet 401.

[0051] The aforementioned shielding teeth 421 are plate-shaped structures, with multiple shielding teeth 421 arranged in sequence and spaced apart from each other, and multiple shielding teeth 421 are arranged in a one-to-one correspondence with multiple fire holes 401. When the fire cover 41 is rotated, the projection of the cross-section of the fire hole 401 is partially or completely located on the shielding teeth 421 or avoids the shielding teeth 421. Specifically, when part of the cross-section of the fire hole 401 falls on the shielding teeth 421, the shielding teeth 421 can partially block the corresponding fire hole 401, thereby reducing the area of the fire hole 401. This allows the gas stove to reduce the flow rate of gas while simultaneously reducing the fire area of the fire hole 401, thereby avoiding a reduction in fire intensity. When the gas stove has a low fire power, it can also avoid backfire and flameout. In this way, the fire power adjustment range of the gas stove is increased, especially the low fire power range, which can meet the smaller fire power requirements required for cooking. When the cross-sectional projection of the fire hole 401 is entirely located on the shielding teeth 421, the shielding teeth 421 completely shield the corresponding fire hole 401, preventing the fire hole 401 from emitting fire. When the cross-sectional projection of the fire hole 401 avoids the shielding teeth 421, the shielding teeth 421 avoid the fire hole 401, or in other words, the fire hole 401 avoids the shielding teeth 421, maximizing the amount of fire output from the fire hole 401, suitable for high-power fire.

[0052] Furthermore, if Figure 2 As shown, the gas stove further includes: a position detection device 5, which is suitable for detecting the position of the valve stem 21 to obtain position information of the valve stem 21 and send it to the controller 3, so that the controller 3 obtains fire power status information according to the position information.

[0053] The valve stem 21 can adjust the power of the gas stove when it rotates. For example, when the valve stem 21 rotates forward, the power of the gas stove increases, and when the valve stem 21 rotates backward, the power of the gas stove decreases. Therefore, the power status of the gas stove can be obtained through the position information of the valve stem 21. The position detection device 5 can obtain the position information of the valve stem 21, and the position detection device 5 sends the detected position information of the valve stem 21 to the controller 3, so that the controller 3 controls the rotation angle of the flame cover 41 based on the position information detected by the position detection device 5, thereby achieving automatic control.

[0054] In addition, the fire status information of the gas stove may also include the start time of the gas stove, which can be obtained through the controller 3. When the start time of the gas stove reaches the preset time, the controller 3 may control the driving mechanism 6 to drive the fire cover 41 to rotate.

[0055] Furthermore, if Figure 2 As shown, the position detection device 5 is provided on the valve stem 21 .

[0056] The valve stem 21 is rotatable, so that the position detection device 5 can operate synchronously with the valve stem 21 . The rotation angle data of the valve stem 21 detected by the position detection device 5 is the position of the valve stem 21 .

[0057] Furthermore, the position detection device 5 includes a potentiometer, which is provided with a mounting hole 51 that matches the shape of the cross section of the valve stem 21 so as to be connected to the valve stem 21 .

[0058] The above-mentioned potentiometer is a continuously adjustable resistor. The handle of the potentiometer is connected to the valve stem 21, so that the handle and the valve stem 21 rotate synchronously. When the handle of the potentiometer rotates synchronously with the valve stem 21, the movable contact of the potentiometer slides on the resistor body. At this time, an output voltage can be obtained at the output end of the potentiometer, which is in a certain relationship with the external voltage of the potentiometer and the angle or stroke of the movable arm. According to the output voltage, the rotation angle of the handle can be obtained. Therefore, the potentiometer can be used to detect the rotation angle of the valve stem 21 and obtain the position information of the valve stem 21.

[0059] Furthermore, the fire cover 41 includes an outer ring fire cover 412 and a central fire cover 411. The outer ring fire cover 412 is provided on the fire distributor 42, and the central fire cover 411 is provided on the fire distributor 42. The central fire cover 411 is located in the center hole of the outer ring fire cover 412. The fire outlet 401 is provided in the central fire cover 411, and the driving mechanism 6 is adapted to drive the central fire cover 411 to rotate.

[0060] The above-mentioned burner also includes a burner head 43, the burner head 304 is installed and fixed on the bottom shell 1, the ignition divider 42 is installed and placed on the top of the burner head 43, the outer ring fire cover 412 is installed and placed on the ignition divider 42, and the central fire cover 411 is installed and placed on the ignition divider 42. The outer ring fire cover 412 and the central fire cover 411 together constitute the fire cover 41, wherein the outer ring fire cover 412 has a center hole, so that the outer ring fire cover 412 is ring-shaped, and the central fire cover 411 is placed in the center hole of the outer ring fire cover 412.

[0061] The center fire cover 411 is driven to rotate by the driving mechanism.

[0062] Furthermore, the driving mechanism 6 includes: a driving motor 61 and a rotating rod 62 . The driving motor 61 is provided with a rotation output portion. The rotating rod 62 is connected to the rotation output portion. The top end of the rotating rod 62 is connected to the fire cover 41 .

[0063] The above-mentioned driving motor 61 drives the fire cover 41 to rotate through the rotating rod 62. Specifically, the central fire cover 411 is connected to the rotating rod 62, so that the rotation output part of the driving motor 61, the rotating rod 62 and the central fire cover 411 can rotate synchronously.

[0064] Further, if Figure 6 and Figure 8 As shown, a protrusion is provided on the outer periphery of the top of the rotating rod 62, and a connecting hole 402 and a limiting groove communicating with the connecting hole 402 are provided in the fire cover 41, and the limiting groove is adapted to the protrusion.

[0065] The rotating rod 62 is matched with the connecting hole 402, and the protruding portion is matched with the limiting groove, so that the fire cover 41 is not easily separated during the rotation process.

[0066] Furthermore, the protrusion includes two bosses, which are arranged on opposite sides of the rotating rod, so that the top of the rotating rod 62 forms a flat structure.

[0067] Furthermore, the driving mechanism 6 drives the fire cover 41 to rotate forward by a preset angle so that the fire hole 401 is at least partially shielded by the shielding teeth 421, or the driving mechanism 6 drives the fire cover 41 to rotate backward by a preset angle so that the fire hole 401 avoids the shielding teeth 421.

[0068] The driving mechanism 6 drives the fire cover 41 to rotate until the fire outlet 401 is at least partially shielded in a direction opposite to the direction of rotation when the fire outlet 401 is not shielded, which can simplify the control method of the driving mechanism 6.

[0069] Furthermore, the gas stove further comprises: a bottom shell 1 , the bottom shell 1 is provided with a plurality of burner areas, and each burner area is provided with a burner 4 .

[0070] The above-mentioned bottom shell 1 is provided with multiple burner areas. For example, the burner area can be set to two, that is, there are two burners 4 in total. Each burner 4 is correspondingly provided with a set of driving mechanism 6 and position detection device 5, and the fire power control of multiple burners 4 can be completed by a controller 3.

[0071] The gas stove described above includes a bottom shell 1, a gas valve assembly 2, a burner 4, and a controller 3. The bottom shell 1 is used to mount the gas valve assembly 2, burner 4, controller 3, and other components. The gas valve assembly 2 is used to turn the gas stove on and off and adjust the flame size of the gas stove. The burner 4 is used to output gas and burn and heat cooking utensils. The controller 3 is used to ignite and control the operation of the drive mechanism 6. The top of the rotating rod 62 of the drive mechanism 6 is provided with a protrusion. The inner ring of the center fire cover 411 is provided with a connecting hole 402 that matches the top of the rotating rod 62 and a limiting groove that communicates with the connecting hole 402. The limiting groove is adapted to the protrusion to enable connection to the center fire cover 411; Figure 7 As shown, the gas valve group 2 is provided with a regulating valve stem 21 with a flat position, and the potentiometer is provided with a flat mounting hole 51, wherein the mounting hole 51 is D-shaped, and the portion of the valve stem 21 that passes through the flat mounting hole is also D-shaped.

[0072] Example 2

[0073] like Figure 9 As shown, a method for adjusting the fire power state of a gas stove includes:

[0074] Step S101: obtaining the fire status information of the gas stove;

[0075] Step S103 : controlling the driving mechanism to drive the fire cover 41 to rotate according to the fire status information until the fire outlet 401 is at least partially shielded by the shielding teeth 421 or avoids the shielding teeth 421 .

[0076] The above-mentioned method obtains the fire status information of the gas stove and controls the fire cover 41 to change the fire area of the fire hole 401 according to the fire status information, thereby changing the fire intensity of the fire hole 401. It can solve the defects of the gas stove such as poor stability under low fire power, easy flameout, backfire, etc., improves the fire power adjustment range of the gas stove, and improves the applicability of the gas stove.

[0077] Further, if Figure 10 As shown, the method for adjusting the firepower state of the gas stove also includes:

[0078] Step S203: obtaining position information of the valve stem 21;

[0079] Step S203: Obtain firepower status information according to the position information.

[0080] The above-mentioned gas stove is the gas stove in Example 1. By obtaining the position information of the valve stem 21 and controlling the fire cover 41 to change the fire area of the fire hole 401 according to the position information, the fire intensity is changed, thereby solving the defects of the gas stove such as poor stability under low fire power, easy flameout, and backfire, etc., improving the fire power adjustment range of the gas stove and improving the applicability of the gas stove.

[0081] Furthermore, controlling the driving mechanism to drive the fire cover 41 to rotate until the fire outlet 401 is at least partially shielded by the shielding teeth 421 or avoids the shielding teeth 421 according to the fire state information specifically includes:

[0082] Acquire first position information when the valve stem 21 rotates to adjust the flame of the burner 4 to a low-fire state;

[0083] Controlling the driving mechanism 6 to drive the central fire cover 411 of the fire cover 41 to rotate forwardly by a first angle according to the first position information, so that the fire outlet 401 is at least partially shielded; or

[0084] Acquire second position information when the valve stem 21 rotates to adjust the flame of the burner 4 to a high-fire state;

[0085] According to the second position information, the driving mechanism 6 is controlled to drive the central fire cover 411 of the fire cover 41 to rotate in the opposite direction by a second angle, so that the fire outlet 401 is not blocked.

[0086] When the user operates the gas valve assembly 2 and rotates the valve stem 21 to adjust the flame of the burner 4 to a low flame, the potentiometer installed on the regulating valve stem 21 of the gas valve assembly 2 has a position change detection function. The potentiometer is connected to the controller 3. The potentiometer detects the position change and transmits the first position information of the position change to the controller 3. Since the controller 3 is connected to the drive motor of the drive mechanism 6, the controller 3 will control the drive motor 61 to rotate forward by a first angle. Because the connection hole 402 of the center fire cover 411 is inserted into the protrusion at the top of the rotating rod 62, the center fire cover 411 will also rotate forward by the first angle. The forward rotation is a clockwise rotation. Since a plurality of shielding teeth 421 are provided on the top surface of the ignition distributor 42, the fire hole 401 of the central fire cover 411 will be at least partially blocked at this time, thereby reducing the fire hole area of the fire hole 401, improving the heat intensity of the fire hole in the low fire state, and solving the defects of the gas stove in the low fire state, such as poor stability, easy flameout, and flashback.

[0087] When the user operates the gas valve group 2 and rotates the valve stem 21 to adjust the flame of the burner 4 to a high fire state, as shown in FIG. Figure 7At the position shown by the valve stem 21 on the right side of the center, the potentiometer detects the position change, i.e., the rotation angle data of the valve stem 21. When the flame reaches the high-fire state, the second position information of the valve stem 21 can be obtained and transmitted to the controller 3. Because the controller 3 is connected to the motor assembly 61, the controller 3 will control the motor assembly 61 to rotate in the opposite direction by a second angle. Because the connection hole 402 of the center fire cover 411 is inserted into the protrusion at the top of the corresponding rotating rod 62, the center fire cover 411 will rotate in the opposite direction by a second angle, wherein the reverse rotation is counterclockwise rotation. As an alternative embodiment, the forward rotation can also be counterclockwise rotation, in which case the reverse rotation is clockwise rotation. At this time, the fire outlet 401 of the center fire cover 411 avoids the blocking position of the blocking tooth 421 of the ignition distributor 42, thereby restoring the fire hole area of the fire outlet 401 to the normal state, allowing normal combustion in the high-fire state. The first angle and the second angle may be the same or different.

[0088] The above-mentioned gas stove uses a linkage device to automatically close at least part of the fire holes 401 of the fire cover 41 when the flame of the gas stove is adjusted to a low fire state, thereby increasing the heat intensity of the fire holes 401 in the low fire state by changing the fire area of the fire holes 401.

[0089] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will readily appreciate that other variations or modifications based on the above descriptions are possible. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. A gas stove, characterized in that: include: The burner (4) comprises a fire cover (41) and a fire distributor (42), wherein a top surface of the fire distributor (42) is provided with a plurality of shielding teeth (421), and a fire cover (41) is provided with a plurality of fire outlet holes (401). A driving mechanism (6) connected to the fire cover (41); A gas valve group (2) having a valve stem (21); a controller (3) in communication with the drive mechanism (6), the controller (3) being adapted to obtain fire status information of the gas stove, and to control the drive mechanism (6) according to the fire status information to drive the fire cover (41) to rotate until the fire outlet (401) is at least partially shielded by the shielding teeth (421) or avoids the shielding teeth (421); a position detection device (5) adapted to detect the position of the valve stem (21) to obtain position information of the valve stem (21) and transmit the position information to the controller (3), so that the controller (3) obtains the fire status information according to the position information; The fire cover (41) comprises: An outer ring fire cover (412) is provided on the fire distributor (42); A central fire cover (411) is provided on the fire distributor (42), and the central fire cover (411) is located in the central hole of the outer ring fire cover (412); Wherein, the driving mechanism is suitable for driving the central fire cover (411) to rotate; The driving mechanism (6) comprises: A drive motor (61) is provided with a rotation output portion; A rotating rod (62) is connected to the rotation output portion, and a top end of the rotating rod (62) is connected to the central fire cover (411) of the fire cover (41). The plurality of blocking teeth (421) are arranged on the inner side of the central fire cover (411).

2. The gas stove according to claim 1, characterized in that: The position detection device (5) comprises: A potentiometer is provided with a mounting hole (51) adapted to the shape of the cross section of the valve stem (21) for connection to the valve stem (21).

3. The gas stove according to claim 1, characterized in that: A protrusion is provided on the outer periphery of the top of the rotating rod (62), and a connecting hole (402) and a limiting groove communicating with the connecting hole (402) are provided in the fire cover (41), wherein the limiting groove is adapted to the protrusion.

4. The gas stove according to claim 3, characterized in that: The protruding portion includes two bosses, and the two bosses are arranged on opposite sides of the rotating rod.

5. The gas stove according to claim 1 or 2, characterized in that: The driving mechanism (6) drives the fire cover (41) to rotate forward by a preset angle, so that the fire outlet (401) is at least partially shielded by the shielding teeth (421), or the driving mechanism (6) drives the fire cover (41) to rotate backward by a preset angle, so that the fire outlet (401) avoids the shielding teeth (421).

6. The gas stove according to claim 1 or 2, characterized in that: Also includes: The bottom shell (1) is provided with a plurality of burner areas, and each burner area is provided with a burner (4).

7. A method for adjusting the firepower state of a gas stove, characterized in that: The method for adjusting the firepower state of a gas stove is implemented by the gas stove according to claim 1, comprising: Get the fire status information of the gas stove; According to the fire status information, the driving mechanism is controlled to drive the fire cover (41) to rotate until the fire outlet (401) is at least partially shielded by the shielding teeth (421) or avoids the shielding teeth (421).

8. The method for adjusting the firepower state of a gas stove according to claim 7, characterized in that: Also includes: Obtaining position information of the valve stem (21); The firepower status information is obtained according to the position information.

9. The method for adjusting the firepower state of a gas stove according to claim 8, characterized in that: The controlling of the driving mechanism according to the fire state information to drive the fire cover (41) to rotate until the fire outlet (401) is at least partially shielded by the shielding teeth (421) or avoids the shielding teeth (421) specifically includes: Acquiring first position information when the valve stem (21) is rotated to adjust the flame of the burner (4) to a low-fire state; According to the first position information, the driving mechanism (6) is controlled to drive the central fire cover (411) of the fire cover (41) to rotate forwardly by a first angle, so that the fire outlet (401) is at least partially shielded by the shielding teeth (421); or Obtaining second position information when the valve stem (21) is rotated to adjust the flame of the burner (4) to a high-fire state; According to the second position information, the driving mechanism (6) is controlled to drive the central fire cover (411) of the fire cover (41) to rotate in the opposite direction by a second angle, so that the fire outlet (401) is not covered.

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