Fire control valve and stove

Abstract

This invention relates to the field of kitchen appliances, and specifically discloses a flame control valve and a stove. The flame control valve includes: a housing, an outer ring solenoid valve, an inner ring solenoid valve, and a check valve; a plug valve is connected to the outer chamber of the inner ring, and the inner and outer ring chambers are respectively connected to the inner and outer ring burner caps of the burner; the inner ring solenoid valve is used to open and close the inner ring flow path between the outer and inner ring chambers, and the outer ring solenoid valve is used to open and close the outer ring flow path between the outer and inner ring chambers; the first and second ports of the inner ring flow-blocking channel are respectively connected to the outer and inner ring chambers; the first and second ports of the outer ring flow-blocking channel are respectively connected to the outer and inner ring chambers; the inner ring chamber is connected to the outer ring chamber via a connecting channel; the connecting channel is closed by a check valve, which prevents fluid from flowing from the outer ring chamber to the inner ring chamber. This flame control valve can reduce its longitudinal volume, while making the stove's flame adjustment more intelligent.

Description

Technical Field

[0001] This invention relates to the field of kitchen appliances, and particularly to a flame control valve and a stove. Background Technology

[0002] In everyday stoves, a stopcock valve is typically used to adjust the burner's flame intensity and the gas supply. The stopcock valve is directly connected to the burner, and rotating it adjusts the gas supply and the burner's flame intensity.

[0003] A plug valve typically consists of a valve body, valve core, valve stem, microswitch, and other auxiliary devices such as a solenoid valve. The main working principle of a gas plug valve is as follows: gas enters through the inlet of the valve body, passes through the solenoid valve in sequence, then enters the valve core, and finally connects to the side opening of the gas outlet pipe through the side opening of the valve core, thereby supplying gas to the gas stove. This involves a complex gas control process.

[0004] Currently, common gas stopcock valves have a relatively complex overall structure, containing many functional components and parts, and the coordination between these components is also quite intricate and close. Due to the large number of components and the need to switch from gas intake to exhaust from one channel, the stopcock valve area requires a large amount of vertical space, thus increasing the overall vertical space required for the stove and resulting in low internal space utilization. Furthermore, in conventional gas stoves using inner and outer ring burners and dual-channel stopcock valves, using electric valves such as motor valves and proportional valves for ignition adjustment is too costly, and using forced-suction valves for ignition adjustment has the problem of limited ignition adjustment options for different scenarios and a lack of intelligent ignition control. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome the shortcomings of the existing plug valve, which has a complex structure, occupies a large longitudinal space, and is not intelligent enough in flame control, and to provide a flame control valve and stove.

[0006] The present invention solves the above-mentioned technical problems through the following technical solution:

[0007] A flame control valve is used to regulate the gas flow between the stop valve of a stove and the burner of the stove. The flame control valve includes: a housing, an outer ring solenoid valve, an inner ring solenoid valve, and a check valve.

[0008] The housing is provided with an inner ring outer chamber, an outer ring outer chamber, an inner ring inner chamber, an outer ring inner chamber, an inner ring interception channel, an outer ring interception channel, and a connecting channel;

[0009] The plug valve is connected to the inner ring outer chamber, and the inner ring inner chamber and the outer ring inner chamber are respectively connected to the inner ring burner cap and the outer ring burner cap of the burner;

[0010] The inner ring solenoid valve is used to open and close the inner ring flow path between the inner ring outer chamber and the inner ring inner chamber, and the outer ring solenoid valve is used to open and close the outer ring flow path between the outer ring outer chamber and the outer ring inner chamber;

[0011] The first and second ports of the inner ring interception channel are respectively connected to the outer chamber of the inner ring and the inner chamber of the inner ring.

[0012] The first and second ports of the outer ring interception channel are respectively connected to the inner ring outer chamber and the outer ring outer chamber;

[0013] The inner ring chamber is connected to the outer ring chamber through the connecting channel; the connecting channel is closed by the check valve, which is used to prevent fluid from flowing from the outer ring chamber to the inner ring chamber.

[0014] In this design, the flame control valve can replace the original plug valve to switch the outer ring flame, simplifying the plug valve's structure and reducing its longitudinal volume. Furthermore, by using inner and outer ring solenoid valves to open and close the inner and outer ring flow paths and setting the inner ring flow-blocking channel, the flame control valve can achieve multiple flame adjustment states corresponding to different cooking modes, making the stove's flame control more intelligent. The check valve ensures that the inner and outer rings or the flame itself do not interfere with each other, resulting in better flame control.

[0015] Preferably, the fire control valve further includes an inner ring adjusting pin, which is disposed within the inner ring throttling channel and used to adjust the flow rate of the inner ring throttling channel;

[0016] The inner ring adjusting pin is provided with an inner ring choke hole, which is connected to the side wall and the end face of the inner ring adjusting pin respectively;

[0017] The housing is also provided with an inner ring flow-blocking mounting hole that extends from the outside of the housing to the inside of the housing. The inner ring adjusting pin is installed in the inner ring flow-blocking mounting hole, and the inner ring flow-blocking mounting hole extends through the inner ring flow-blocking channel.

[0018] The fire control valve also includes an outer ring adjusting pin, which is located in the outer ring throttling channel and is used to adjust the flow rate of the outer ring throttling channel;

[0019] The outer ring adjusting pin is provided with an outer ring intercepting hole, which is connected to the side wall and the end face of the outer ring adjusting pin respectively;

[0020] The housing is also provided with an outer ring interception mounting hole that extends from the outside of the housing to the inside of the housing. The outer ring adjusting pin is installed in the outer ring interception mounting hole, and the outer ring interception mounting hole extends through the outer ring interception channel.

[0021] Preferably, the opening size of the inner ring intercepting hole is less than or equal to the opening size of the outer ring intercepting hole.

[0022] Preferably, the housing is further provided with a check valve mounting hole extending from the outside of the housing to the inside of the housing. The check valve is installed in the check valve mounting hole. The check valve includes an elastic element and a check valve plug. The elastic element biases the check valve plug in the direction toward the inner ring cavity. The check valve plug is used to block the communication channel.

[0023] Preferably, the first port of the inner ring interception channel and the first port of the outer ring interception channel are the same port.

[0024] A stove comprising a stopcock valve, a flame control valve as described above, and a burner.

[0025] Preferably, the stopcock valve has a single gas flow channel, the opening of which is adjusted by rotating the stopcock valve, and the gas flow channel is connected to the inner ring outer chamber of the flame control valve.

[0026] Preferably, the cooktop further includes a control unit and a rotation detection unit, wherein the control unit is electrically connected to the rotation detection unit, the outer ring solenoid valve, and the inner ring solenoid valve;

[0027] The rotation detection unit is used to detect the rotation angle of the plug valve;

[0028] The control unit controls the opening and closing of the outer ring solenoid valve and the inner ring solenoid valve based on the first detection result of the rotation detection unit.

[0029] Preferably, the cooktop further includes an input unit, which is electrically connected to the control unit;

[0030] The input unit is used to send command signals to the control unit, and the control unit also controls the opening and closing of the outer loop solenoid valve and the inner loop solenoid valve according to the command signals of the input unit;

[0031] Preferably, the cooktop further includes a scene detection unit, which is electrically connected to the control unit;

[0032] The scene detection unit is used to detect the current cooking scene, and the control unit controls the opening and closing of the outer ring solenoid valve and the inner ring solenoid valve according to the second detection result of the detection unit.

[0033] Preferably, the cooktop further includes a control unit and a rotation detection unit, wherein the control unit is electrically connected to the rotation detection unit, the outer ring solenoid valve, and the inner ring solenoid valve;

[0034] The rotation detection unit is used to detect the rotation angle of the plug valve;

[0035] The control unit controls the opening and closing of the outer ring solenoid valve and the inner ring solenoid valve based on the first detection result of the rotation detection unit.

[0036] The rotation detection unit includes a micro switch, which is electrically connected to the control unit;

[0037] The micro switch includes an inclined paddle, and a trigger plate is sleeved on the valve stem of the plug valve. The trigger plate has a protrusion that extends a predetermined distance along the circumference of the trigger plate, and the protrusion length of the protrusion is set to be able to press the paddle.

[0038] Preferably, the stove further includes an electronically controlled driver, which is used to drive the valve stem of the stopcock valve to rotate. The electronically controlled driver is electrically connected to the control unit, and the control unit controls the electronically controlled driver according to the command signal or the second detection result.

[0039] Preferably, the cooktop further includes an input unit and a scene detection unit, both of which are connected to the control unit;

[0040] The input unit is used to send instruction signals to the control unit, and the scene detection unit is used to detect the current cooking scene and send a second detection result to the control unit;

[0041] When the control unit determines that the cooking mode corresponding to the command signal is different from the cooking mode corresponding to the second detection result, it prioritizes the execution of the cooking mode corresponding to the second detection result and controls the opening and closing of the outer ring solenoid valve and the inner ring solenoid valve according to the cooking mode.

[0042] Preferably, the stove further includes an alarm device, which is electrically connected to the control unit;

[0043] When the control unit determines that the cooking mode corresponding to the instruction signal is different from the cooking mode corresponding to the second detection result, it controls the alarm device to issue a prompt.

[0044] The significant advantages of this invention are as follows: This flame control valve can replace the original stopcock valve to switch the outer ring flame, simplifying the stopcock valve's structure and reducing its longitudinal volume. Furthermore, by using inner and outer ring solenoid valves to open and close the inner and outer ring flow paths and by setting the inner ring flow-blocking channel, this flame control valve can achieve multiple flame adjustment states corresponding to different cooking modes, making the stove's flame control more intelligent. The inclusion of a check valve ensures that the inner and outer rings or the flame itself do not interfere with each other, resulting in better flame control. Attached Figure Description

[0045] Figure 1 This is a three-dimensional structural diagram of a stove according to an embodiment of the present invention.

[0046] Figure 2 This is a three-dimensional structural diagram of a fire control valve according to an embodiment of the present invention.

[0047] Figure 3 This is a schematic cross-sectional view of a fire control valve according to an embodiment of the present invention.

[0048] Figure 4 This is a schematic diagram of another cross-sectional structure of a fire control valve according to an embodiment of the present invention.

[0049] Figure 5 This is a three-dimensional structural diagram of a plug valve according to an embodiment of the present invention.

[0050] Figure 6 This is a schematic diagram of the control system of a stove according to an embodiment of the present invention.

[0051] Figure 7 This is a schematic diagram of the control system of a stove according to another embodiment of the present invention.

[0052] Figure 8 This is a schematic diagram of the control system of a stove according to another embodiment of the present invention.

[0053] Explanation of reference numerals in the attached drawings: Stove 100; Plug valve 110; Valve stem 111; Trigger plate 112; Protrusion 113; Micro switch 114; Paddle 115; Flame control valve 120; Housing 130; Straight hole 132; Open end 134; Sealing ring 136; Air inlet channel 141; Inner ring air outlet channel 142; Outer ring air outlet channel 143; Inner ring inner chamber 144; Inner ring outer chamber 145; Outer ring inner chamber 146; Outer ring outer chamber 147; Inner ring throttling channel 148; Outer ring throttling channel 149; Channel 149; Connecting channel 151; Inner ring solenoid valve 161; Outer ring solenoid valve 162; Check valve 164; Check valve plug 1641; Spring 1642; Check valve mounting hole 166; Inner ring adjusting pin 171; Inner ring throttling hole 172; Inner ring throttling mounting hole 173; Outer ring adjusting pin 181; Outer ring throttling hole 182; Outer ring throttling mounting hole 183; Burner 190; Control unit 201; Rotation detection unit 202; Input unit 203; Scene detection unit 204. Detailed Implementation

[0054] The present invention will be further described below with reference to the accompanying drawings and by way of embodiments, but the present invention is not limited to the scope of the embodiments.

[0055] like Figure 1-5 As shown, this embodiment provides a stove 100, which includes a stopcock valve 110, a flame control valve 120, and a burner 190.

[0056] The plug valve 110 is used to regulate the flow rate of gas by rotating itself.

[0057] In this embodiment, the plug valve 110 has a single gas flow channel, the opening of which is adjusted by rotating the plug valve 110. The gas flow channel is connected to the air inlet passage 141 of the flame control valve 120. The plug valve 110 also has a valve stem 111, which is rotated to adjust the opening of the gas flow channel. Such a plug valve 110, which adjusts the flow channel opening by rotation, is widely used in the prior art and will not be described in detail here.

[0058] The flame control valve 120 is used to regulate the gas flow between the stop valve 110 of the stove 100 and the burner 190 of the stove 100.

[0059] The fire control valve 120 includes: a housing 130, an outer ring solenoid valve 162, an inner ring solenoid valve 161, and a check valve 164.

[0060] The housing 130 is provided with an inner ring outer chamber 145, an outer ring outer chamber 147, an inner ring inner chamber 144, an outer ring inner chamber 146, an inner ring throttling channel 148, an outer ring throttling channel 149, and a connecting channel 151. A stopcock valve 110 is connected to the inner ring outer chamber 145. The inner ring inner chamber 144 and the outer ring inner chamber 146 are respectively connected to the inner ring burner cap and the outer ring burner cap of the burner 190. An inner ring solenoid valve 161 is used to open and close the inner ring flow path between the inner ring outer chamber 145 and the inner ring inner chamber 144. An outer ring solenoid valve 162 is used to open and close the outer ring outer chamber. The outer ring flow path is between chamber 147 and outer ring inner chamber 146; the first and second ports of the inner ring intercepting channel 148 are respectively connected to the inner ring outer chamber 145 and inner ring inner chamber 144; the first and second ports of the outer ring intercepting channel 149 are respectively connected to the inner ring outer chamber 145 and outer ring outer chamber 147; the inner ring inner chamber 144 is connected to the outer ring outer chamber 147 through the connecting channel 151; the connecting channel 151 is closed by the check valve 164, which is used to prevent fluid from flowing from the outer ring outer chamber 147 to the inner ring inner chamber 144.

[0061] The flame control valve 120 can replace the original stopcock valve 110 to switch the outer ring flame, simplifying the structure of the stopcock valve 110 and reducing its longitudinal volume. Simultaneously, the flame control valve 120, through the opening and closing of the inner and outer ring flow paths via the inner ring solenoid valve 161 and the outer ring solenoid valve 162, and the setting of the inner ring flow interception channel 148, can achieve multiple flame adjustment states corresponding to different cooking modes, making the flame adjustment of the stove 100 more intelligent. The check valve 164 ensures that the inner and outer rings or the flame do not interfere with each other, resulting in better flame control.

[0062] The housing 130 also includes an air inlet passage 141, an inner ring air outlet passage 142, and an outer ring air outlet passage 143. A stopcock valve 110 is connected to the outer inner ring chamber 145 via the air inlet passage 141. The inner ring burner cap of the burner 190 is connected to the inner inner ring chamber 144 via the inner ring air outlet passage 142. The outer ring burner cap of the burner 190 is connected to the inner outer ring chamber 146 via the outer ring air outlet passage 143.

[0063] The fire control valve 120 also includes an inner ring adjusting pin 171, which is located in the inner ring throttling channel 148 and is used to adjust the flow rate of the inner ring throttling channel 148; the inner ring adjusting pin 171 is provided with an inner ring throttling hole 172, which is connected to the side wall and the end face of the inner ring adjusting pin 171 respectively; the housing 130 is also provided with an inner ring throttling mounting hole 173 that extends from the outside of the housing 130 to the inside of the housing 130, and the inner ring adjusting pin 171 is installed in the inner ring throttling mounting hole 173, which extends through the inner ring throttling channel 148.

[0064] The fire control valve 120 also includes an outer ring adjusting pin 181, which is located in the outer ring throttling channel 149 and is used to adjust the flow rate of the outer ring throttling channel 149. The outer ring adjusting pin 181 is provided with an outer ring throttling hole 182, which is connected to the side wall and the end face of the outer ring adjusting pin 181 respectively. The housing 130 is also provided with an outer ring throttling mounting hole 183 that extends from the outside of the housing 130 to the inside of the housing 130. The outer ring adjusting pin 181 is installed in the outer ring throttling mounting hole 183, which extends through the outer ring throttling channel 149.

[0065] In this embodiment, an intercepting channel is formed by setting an adjusting pin. However, the present invention is not limited to this. Those skilled in the art can form an intercepting channel as needed using other existing components or other existing forms.

[0066] The regulating pin mainly achieves flow interception through the interception hole. The cross-sectional area of ​​the interception hole is much smaller than that of normal fluid channels such as inner ring flow path, outer ring flow path, inner ring interception channel 148, outer ring interception channel 149, and connecting channel 151. Only a small amount of fluid can flow through the interception hole.

[0067] A portion of the inner ring choke hole 172 penetrates the side wall of the inner ring adjusting pin 171. The inner ring choke hole 172 forms a "T" shape in the inner ring adjusting pin 171, including a transverse through portion and a longitudinal through portion. The diameter of the inner ring choke hole 172 where the transverse through portion is located is smaller than the diameter of the inner ring choke mounting hole 173 where the inner ring adjusting pin 171 is located at the corresponding position. This results in a gap being formed between the side of the inner ring adjusting pin 171 and the hole wall of the inner ring choke mounting hole 173 at that position, allowing fluid entering from the inner ring choke channel 148 to pass through this gap and enter the inner ring choke hole 172 of the inner ring adjusting pin 171.

[0068] A portion of the outer ring intercepting hole 182 penetrates the side wall of the outer ring adjusting pin 181. The outer ring intercepting hole 182 forms a "T" shape in the outer ring adjusting pin 181, including a transverse through portion and a longitudinal through portion. The diameter of the outer ring intercepting hole 182 where the transverse through portion is located is smaller than the diameter of the outer ring intercepting mounting hole 183 where the outer ring adjusting pin 181 is located at the corresponding position. This results in a gap being formed between the side of the outer ring adjusting pin 181 and the hole wall of the outer ring intercepting mounting hole 183 at that position, allowing fluid entering from the inner ring intercepting channel 148 to pass through this gap and enter the outer ring intercepting hole 182 of the outer ring adjusting pin 181.

[0069] In this embodiment, an intercepting channel is formed by setting an adjusting pin. However, the present invention is not limited to this. Those skilled in the art can form an intercepting channel as needed using other existing components or other existing forms.

[0070] The opening size of the inner ring intercepting orifice 172 is less than or equal to the opening size of the outer ring intercepting orifice 182. When the opening size of the inner ring intercepting orifice 172 is equal to the opening size of the outer ring intercepting orifice 182, the flow rate of the gas flowing to the inner ring burner cap and the outer ring burner cap of the burner 190 through the inner ring intercepting channel 148 and the outer ring intercepting channel 149 is the same, and their firepower is the same.

[0071] However, the flame radius of the outer ring fire cap is much larger than that of the inner ring fire cap. Therefore, the opening size of the outer ring intercepting hole 182 is larger than that of the inner ring intercepting hole 172, which ensures that the average firepower of the outer ring fire is equal to that of the inner ring fire.

[0072] The first port of the inner ring interception channel 148 and the first port of the outer ring interception channel 149 are the same port.

[0073] like Figure 3 and 4 As shown, the inner ring intercepting channel 148 and the outer ring intercepting channel 149 share the same air inlet. Although the air outlets of the inner ring intercepting channel 148 and the outer ring intercepting channel 149 are different, i.e., the second ports are different, their flow paths are mostly shared, thus avoiding multiple openings in the housing 130.

[0074] The inner ring solenoid valve 161 and the outer ring solenoid valve 162 are respectively installed at the two open ends 134 of the housing 130. The open end 134 where the outer ring solenoid valve 162 is located has a straight hole 132. The straight hole 132 forms the main part of the inner ring interception channel 148 and the outer ring interception channel 149. The port of the straight hole 132 is closed by a sealing ring 136 sandwiched between the outer ring solenoid valve 162 and the housing 130.

[0075] The housing 130 also has a check valve mounting hole 166 extending from the outside of the housing 130 into the inside of the housing 130. A check valve 164 is installed in the check valve mounting hole 166. The check valve 164 includes an elastic element and a check valve plug 1641. The elastic element biases the check valve plug 1641 in the direction toward the inner ring chamber 144. The check valve plug 1641 is used to block the communication channel 151. In this embodiment, the elastic element is a spring 1642.

[0076] The check valve mounting hole 166 penetrates through the outer side of the housing 130, facilitating its machining. The spring force of the spring 1642 is set such that when the inner ring solenoid valve 161 is open, the check valve plug 1641 can be opened by the gas flowing into the inner ring outer chamber 145; conversely, when the inner ring solenoid valve 161 is closed, the check valve 164 cannot be opened by the gas flowing into the inner ring throttling channel 148. This prevents gas from being supplied to the outer ring outlet channel 143 via the inner ring throttling channel 148, thus avoiding the influence of the outer ring fire on the inner ring flame and reducing flame control accuracy. In the flame adjustment mode (described in detail below), the inner and outer ring flames are controlled by the inner ring throttling channel 148 and the outer ring throttling channel 149, respectively, through the check valve 164.

[0077] like Figure 6 As shown, the cooktop 100 also includes a control unit 201 and a rotation detection unit 202. The control unit 201 is electrically connected to the rotation detection unit 202, the outer ring solenoid valve 162, and the inner ring solenoid valve 161. The rotation detection unit 202 is used to detect the rotation angle of the plug valve 110. The control unit 201 controls the opening and closing of the outer ring solenoid valve 162 and the inner ring solenoid valve 161 according to the first detection result of the rotation detection unit 202.

[0078] The rotation detection unit 202 can obtain the first detection result by detecting the rotation angle of the valve stem 111 of the plug valve 110.

[0079] Taking the maximum rotation angle of the plug valve 110 as 170°, with 0-40° corresponding to only inner ring flame, 40°-140° corresponding to both inner and outer ring flame, and 140°-170° corresponding to only inner ring flame as an example, when the plug valve 110 rotates to 0°-40°, the control unit 201 controls the outer ring solenoid valve 162 to close and the inner ring solenoid valve 161 to open. When the plug valve 110 rotates to 40°-140°, the control unit 201 controls both the outer ring solenoid valve 162 and the inner ring solenoid valve 161 to open. When the plug valve 110 rotates to 140°-170°, the control unit 201 controls the outer ring solenoid valve 162 to close and the inner ring solenoid valve 161 to open.

[0080] The rotation detection unit 202 includes a micro switch 114, which is electrically connected to the control unit 201.

[0081] like Figure 5 As shown, the micro switch 114 includes an inclined paddle 115, and a trigger plate 112 is sleeved on the valve stem 111 of the plug valve 110. The trigger plate 112 is provided with a protrusion 113 that extends a predetermined distance along the circumference of the trigger plate 112. The protruding length of the protrusion 113 is set to be able to press the paddle 115.

[0082] In this embodiment, the rotation of the plug valve 110 from 0 to the maximum angle corresponds to the rotation from minimum flame to maximum flame and then back to minimum flame.

[0083] Taking a maximum rotation angle of 170° for the stopcock valve 110, where 0-40° corresponds to only inner ring firing, 40°-140° corresponds to both inner and outer ring firing, and 140°-170° corresponds to only inner ring firing, the coverage angle corresponding to the predetermined distance the protrusion 113 extends circumferentially along the trigger plate 112 is 100°. When the stopcock valve 110 rotates to 0-40°, the paddle 115 is not pressed, and the control unit 201 responds to the micro switch 114 to control the outer ring solenoid valve 162 to close. When the stopcock valve 110 rotates to 40°-140°, the paddle 115 is pressed by the protrusion 113, and the control unit 201 responds to the micro switch 114 to control the outer ring solenoid valve 162 to open normally. When the stopcock valve 110 rotates to 140°-170°, the paddle 115 is not pressed, and the control unit 201 responds to the micro switch 114 to control the outer ring solenoid valve 162 to close. The tail end of the protrusion 113 in the forward rotation direction (clockwise in the figure) smoothly transitions with the rest of the trigger plate 112, so that the plug valve 110 can rotate smoothly when it rotates (counterclockwise in the figure).

[0084] In other embodiments, the micro switch 114 includes an inclined paddle 115, and a trigger plate 112 is sleeved on the valve stem 111 of the stopcock valve 110. The trigger plate 112 may also be provided with a first protrusion and a second protrusion extending a predetermined distance along the circumference of the trigger plate 112. The first protrusion and the second protrusion are separated by a predetermined distance in the circumferential direction, and the protrusion lengths of the first protrusion and the second protrusion are both set to be able to press the paddle 115.

[0085] This specified distance corresponds to the rotation angle range of the plug valve 110 for the large fire, while the circumferential extension length of the first protrusion and the second protrusion corresponds to the rotation angle range of the plug valve 110 for the small fire.

[0086] Taking a maximum rotation angle of 170° for the stopcock valve 110, where 0-40° corresponds to only inner ring flame, 40°-140° corresponds to both inner and outer ring flames, and 140°-170° corresponds to only inner ring flame, the circumferential extension coverage angles of the first and second protrusions are 40° and 30° respectively, and the circumferential extension coverage angle at a specified distance is 100°. When the stopcock valve 110 rotates to 0-40°, the first protrusion presses the paddle 115, and the control unit 201 responds to the micro switch 114 to control the outer ring solenoid valve 162 to close. When the stopcock valve 110 rotates to 40°-140°, the paddle 115 is not pressed, and the control unit 201 responds to the micro switch 114 to control the outer ring solenoid valve 162 to open. When the stopcock valve 110 rotates to 140°-170°, the second protrusion presses the paddle 115, and the control unit 201 responds to the micro switch 114 to control the outer ring solenoid valve 162 to close. The tail ends of the first and second protrusions in the positive rotation direction smoothly transition with the rest of the trigger plate 112, so that the plug valve 110 can rotate smoothly when it rotates.

[0087] In other embodiments, the rotation detection unit 202 may also be an angle sensor. The angle sensor may be a Hall effect angle sensor, a magnetoresistive effect angle sensor, etc.

[0088] In other embodiments, the rotation detection unit 202 can also be an optical sensor. A positioning ring is sleeved on the valve stem 111 of the plug valve 110, and multiple positioning points corresponding to different rotation angles are provided on the positioning ring. The optical sensor is used to identify the multiple positioning points.

[0089] The cooktop 100 also includes an input unit 203, which is electrically connected to the control unit 201. The input unit 203 is used to send command signals to the control unit 201, and the control unit 201 also controls the opening and closing of the outer ring solenoid valve 162 and the inner ring solenoid valve 161 according to the command signals of the input unit 203.

[0090] Input unit 203 sends command signals according to the buttons or button modes corresponding to different cooking scenarios. Different cooking scenarios correspond to different buttons or button modes, including different pressing durations and number of presses, such as long press or two short presses in the soup-making scenario. Control unit 201 controls the outer ring solenoid valve 162 and the inner ring solenoid valve 161 according to the command signals from input unit 203 to adjust the firepower of burner 190. Optionally, an electronically controlled actuator can also be provided on the stopcock valve 110 to drive the rotation of the stopcock valve 110. Control unit 201 can also control the electronically controlled actuator according to the command signals from input unit 203 to adjust the opening of the gas flow channel of stopcock valve 110, thereby achieving more precise control of the firepower of burner 190.

[0091] In another embodiment, such as Figure 7 As shown, the cooktop 100 also includes a scene detection unit 204 instead of an input unit 203. The scene detection unit 204 is electrically connected to the control unit 201. The scene detection unit 204 is used to detect the current cooking scene. The control unit 201 controls the opening and closing of the outer ring solenoid valve 162 and the inner ring solenoid valve 161 according to the second detection result of the scene detection unit 204.

[0092] The scene detection unit 204 is used to detect the current cooking scene. The control unit 201 controls the opening and closing of the outer ring solenoid valve 162 and the inner ring solenoid valve 161 according to the second detection result of the scene detection unit 204 to adjust the firepower of the burner 190. The scene detection unit 204 can be, for example, a camera or a sound sensor. For example, when the camera detects that the pot on the stove 100 is splattering, the camera transmits the image signal to the control unit 201. The control unit 201 recognizes the image and determines that the cooking scene is splattering, and controls the outer ring solenoid valve 162 and the inner ring solenoid valve 161 to close, directly adjusting the firepower to the minimum. Alternatively, when the sound sensor detects the sound of splattering, the sound sensor transmits the sound signal to the control unit 201. The control unit 201 recognizes the sound, determines that the current cooking scene is splattering, and performs corresponding control. Optionally, an electronically controlled actuator can also be provided on the stop valve 110 to drive the rotation of the stop valve 110. The control unit 201 can also control the electronically controlled driver according to the instruction signal from the input unit 203 to adjust the opening of the gas flow channel of the plug valve 110, thereby enabling more precise control of the firepower of the burner 190.

[0093] In yet another embodiment, such as Figure 8As shown, the cooktop 100 includes an input unit 203 and a scene detection unit 204, both of which are connected to the control unit 201. The input unit 203 is used to send command signals to the control unit 201, and the scene detection unit 204 is used to detect the current cooking scene and send a second detection result to the control unit 201. When the control unit 201 determines that the cooking mode corresponding to the command signal is different from the cooking mode corresponding to the second detection result, it prioritizes the execution of the cooking mode corresponding to the second detection result and controls the opening and closing of the outer ring solenoid valve 162 and the inner ring solenoid valve 161 according to the cooking mode.

[0094] The cooktop 100 includes both an input unit 203 and a scene detection unit 204. This design helps prevent human error. For example, if the cooking scene is stir-frying, a person might accidentally press the wrong button in a panic, resulting in an error. The input unit 203 might input a command signal corresponding to the stir-frying cooking scene, but the scene detection unit 204 detects that the cooking scene is stir-frying. In this case, the control unit 201 prioritizes the cooking mode corresponding to stir-frying—closing the outer ring solenoid valve 162 and the inner ring solenoid valve 161, and adjusting the burner 190's heat to the lowest setting. This prevents damage caused by human error.

[0095] When the control unit 201 determines that the cooking mode corresponding to the command signal is the same as the cooking mode corresponding to the second detection result, it executes the cooking mode corresponding to the command signal and controls the opening and closing of the outer ring solenoid valve 162 and the inner ring solenoid valve 161 according to the cooking mode.

[0096] The cooktop 100 may also include an alarm device electrically connected to the control unit 201. When the control unit 201 determines that the cooking mode corresponding to the command signal differs from the cooking mode corresponding to the detection result, it controls the alarm device to issue a warning. Through the warning from the alarm device, the operator can promptly identify and correct their operational errors, thus avoiding more serious consequences. The alarm device may be an alarm light, an alarm sound, a display screen showing the alarm, etc.

[0097] In this embodiment, the scene detection unit 204 plays a corrective role. It executes the corresponding cooking mode only when the cooking mode corresponding to the instruction signal is the same as the cooking mode corresponding to the second detection result. This avoids misjudgment or premature operation and human error caused by direct detection by the scene detection unit 204. For example, the scene detection unit 204 directly judges the stir-fry mode based on the wok being placed on the stove, but in reality, the operator may be about to change the wok.

[0098] The following describes the gas flow within the flame control valve 120 when the solenoid valve is opened and closed.

[0099] When the inner ring solenoid valve 161 is open and the outer ring solenoid valve 162 is open, the inner ring flow path is normally open; the gas enters the inner ring inner chamber 144 through the inner ring outer chamber 145, opens the check valve 164, enters the outer ring outer chamber 147, and then flows into the outer ring inner chamber 146; the gas enters the outer ring outer chamber 147 through the outer ring choke channel 149 from the inner ring outer chamber 145, and then enters the outer ring inner chamber 146. Therefore, the outer ring flow path is also normally open.

[0100] When the inner ring solenoid valve 161 is closed and the outer ring solenoid valve 162 is closed, the inner ring flow path is blocked, and the gas enters the inner ring inner chamber 144 from the outer inner ring chamber 145 through the inner ring blocking channel 148, and the outer ring flow path is closed.

[0101] When the inner loop solenoid valve 161 is open and the outer loop solenoid valve 162 is closed, the inner loop flow path flows normally, and the outer loop flow path is closed.

[0102] When the inner ring solenoid valve 161 is closed and the outer ring solenoid valve 162 is open, the inner ring flow path is blocked, and the gas enters the inner ring inner chamber 144 from the inner ring outer chamber 145 through the inner ring blocking channel 148; the outer ring flow path is blocked, and the gas enters the outer ring outer chamber 147 from the inner ring outer chamber 145 through the outer ring blocking channel 149, and then enters the outer ring inner chamber 146.

[0103] When the stove 100 is not in flame adjustment mode, that is, when the flame is controlled only by the rotation of the stopcock valve 110, the control unit 201 controls the outer ring solenoid valve 162 and the inner ring solenoid valve 161 according to the first detection result of the rotation detection unit 202, thereby realizing the flame adjustment function of the general stove 100.

[0104] Taking the maximum rotation angle of the plug valve 110 as 170°, with 0-40° corresponding to only inner ring flame, 40°-140° corresponding to both inner and outer ring flame, and 140°-170° corresponding to only inner ring flame as an example, when the plug valve 110 rotates to 0°-40°, the control unit 201 controls the outer ring solenoid valve 162 to close and the inner ring solenoid valve 161 to open. When the plug valve 110 rotates to 40°-140°, the control unit 201 controls both the outer ring solenoid valve 162 and the inner ring solenoid valve 161 to open. When the plug valve 110 rotates to 140°-170°, the control unit 201 controls the outer ring solenoid valve 162 to close and the inner ring solenoid valve 161 to open.

[0105] When the stove 100 enters the flame adjustment mode, it has the following flame adjustment modes:

[0106] Mode 1: When both the inner and outer ring solenoid valves are open, the burner 190 has both inner and outer ring flames, and the flame intensity is adjusted as the plug valve 110 rotates.

[0107] Mode 2: When the inner ring solenoid valve is closed and the outer solenoid valve is closed, the outer ring flame of the burner 190 is extinguished, and the inner ring flame remains low (at this time, only the inner ring throttling channel 148 has gas passing through, so that the inner ring flame remains low). Since the inner ring flame is already low at this time, even if the stop valve 110 is rotated, the adjustment of the flame is very weak.

[0108] Mode 3: When the inner ring solenoid valve is open and the outer ring solenoid valve is closed, the inner ring flame is adjusted with the rotation of the plug valve 110, and the outer ring flame is not lit.

[0109] Mode 4: When the inner ring solenoid valve is closed and the outer ring solenoid valve is open, the inner ring flame remains low (at this time, the gas for the inner ring burner is supplied through the inner ring throttling channel 148, so that the inner ring flame remains low), and the outer ring flame also remains low (at this time, the gas for the outer ring burner is supplied through the outer ring throttling channel 149, so that the outer ring flame remains low).

[0110] Mode 1 is particularly advantageous for cooking with a frying pan, as the flame radius does not decrease with the reduction of heat, ensuring even heating of the entire bottom surface of the frying pan.

[0111] Mode 2 allows for quick heat reduction, which is very advantageous for hot pot cooking, allowing the operator to reduce heat with a single touch. It is also suitable for other cooking scenarios such as soup making.

[0112] Mode 3 is suitable for scenarios such as frying eggs in small pans, such as popular egg pans and coffee pots with small radii on the market, which are all suitable for heating in Mode 3.

[0113] Mode 4 is suitable for extreme low-heat temperature control, ideal for low-heat cooking, ensuring the flame radius, and providing a direct low-heat temperature control mode without relying on the rotation of the stopcock valve 110.

[0114] The heat of the inner and outer rings in Mode 4 can be adjusted by the inner ring interception hole 172 and the outer ring interception hole 182 respectively. By selecting the inner ring adjustment pin 171 and the outer ring adjustment pin 181, the applicable cooking scenarios of Mode 4 can be adjusted.

[0115] Modes one through four can also be freely combined and applied in cooking recipes. Modes two, three, and four can all reduce the heat. For example, in the steaming mode, you can first apply mode one, then switch to mode two or three after the water boils, and then switch back to mode one after the water temperature drops (by adding water).

[0116] Compared to the dual-channel stopcock valve 110, the single-channel stopcock valve 110 of this embodiment is more suitable for adjusting the cooking mode. The single-channel stopcock valve 110 can more conveniently adjust the heat when the inner ring flame is normal (the heat level is adjusted according to the rotation of the stopcock valve 110) and the outer ring flame is off.

[0117] When the stop valve 110 is equipped with an electric actuator, multiple stepped modes can be added in modes one to four to correspond to more detailed cooking scenarios. For example, when frying scallion pancakes, it can directly correspond to the state of the stop valve 110 turning to 20° in mode one. This way, you can enter the cooking scenario of a fixed food with one click and perform foolproof operation, avoiding the need to adjust the heat yourself and cause cooking failure.

[0118] When the cooktop 100 enters the flame adjustment mode, that is, after the input unit 203 or the scene detection unit 204 is triggered, the control unit 201 no longer controls the outer ring solenoid valve 162 and the inner ring solenoid valve 161 according to the first detection result of the rotation detection unit 202.

[0119] This embodiment also provides a flame adjustment method, which is applied to the above-mentioned stove 100.

[0120] The method of adjusting the heat includes:

[0121] Determine whether to enter flame adjustment mode.

[0122] If so, the control unit 201 controls the outer loop solenoid valve 162, the inner loop solenoid valve 161, and the electronically controlled driver according to the command signal or the second detection result.

[0123] If not, the control unit 201 controls the outer loop solenoid valve 162 and the inner loop solenoid valve 161 according to the first detection result.

[0124] When both a command signal and a second detection result exist, if the cooking mode corresponding to the command signal and the second detection result is inconsistent, the control unit 201 controls the outer loop solenoid valve 162, the inner loop solenoid valve 161, and the electronic driver according to the second detection result. If the cooking mode corresponding to the command signal and the second detection result is consistent, the control unit 201 controls the outer loop solenoid valve 162, the inner loop solenoid valve 161, and the electronic driver according to the command signal.

[0125] In the description of this invention, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship of the device or element during normal use. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation at any time, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention in this respect.

[0126] While specific embodiments of the present invention have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of the present invention is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, but all such changes and modifications fall within the scope of protection of the present invention.

Claims

1. A flame control valve, said flame control valve being used to regulate the gas flow between a stopcock valve of a stove and the burner of the stove, characterized in that, The fire control valve includes: a housing, an outer ring solenoid valve, an inner ring solenoid valve, and a check valve; The housing is provided with an inner ring outer chamber, an outer ring outer chamber, an inner ring inner chamber, an outer ring inner chamber, an inner ring interception channel, an outer ring interception channel, and a connecting channel; The plug valve is connected to the inner ring outer chamber, and the inner ring inner chamber and the outer ring inner chamber are respectively connected to the inner ring burner cap and the outer ring burner cap of the burner; The inner ring solenoid valve is used to open and close the inner ring flow path between the inner ring outer chamber and the inner ring inner chamber, and the outer ring solenoid valve is used to open and close the outer ring flow path between the outer ring outer chamber and the outer ring inner chamber; The first and second ports of the inner ring interception channel are respectively connected to the outer chamber of the inner ring and the inner chamber of the inner ring. The first and second ports of the outer ring interception channel are respectively connected to the inner ring outer chamber and the outer ring outer chamber; The inner ring chamber is connected to the outer ring chamber through the connecting channel; the connecting channel is closed by the check valve, which is used to prevent fluid from flowing from the outer ring chamber to the inner ring chamber.

2. The fire control valve as described in claim 1, characterized in that, The fire control valve also includes an inner ring adjusting pin, which is located in the inner ring throttling channel and is used to adjust the flow rate of the inner ring throttling channel; The inner ring adjusting pin is provided with an inner ring choke hole, which is connected to the side wall and the end face of the inner ring adjusting pin respectively; The housing is also provided with an inner ring flow-blocking mounting hole that extends from the outside of the housing to the inside of the housing. The inner ring adjusting pin is installed in the inner ring flow-blocking mounting hole, and the inner ring flow-blocking mounting hole extends through the inner ring flow-blocking channel. The fire control valve also includes an outer ring adjusting pin, which is located in the outer ring throttling channel and is used to adjust the flow rate of the outer ring throttling channel; The outer ring adjusting pin is provided with an outer ring intercepting hole, which is connected to the side wall and the end face of the outer ring adjusting pin respectively; The housing is also provided with an outer ring interception mounting hole that extends from the outside of the housing to the inside of the housing. The outer ring adjusting pin is installed in the outer ring interception mounting hole, and the outer ring interception mounting hole extends through the outer ring interception channel.

3. The fire control valve as described in claim 2, characterized in that, The opening size of the inner ring intercepting hole is less than or equal to the opening size of the outer ring intercepting hole.

4. The fire control valve as described in claim 1, characterized in that, The housing is also provided with a check valve mounting hole extending from the outside of the housing to the inside of the housing. The check valve is installed in the check valve mounting hole. The check valve includes an elastic element and a check valve plug. The elastic element biases the check valve plug in the direction toward the inner ring cavity. The check valve plug is used to block the communication channel.

5. The fire control valve as described in claim 1, characterized in that, The first port of the inner ring interception channel and the first port of the outer ring interception channel are the same port.

6. A stove, characterized in that, It includes a plug valve, a flame control valve as described in any one of claims 1-5, and a burner.

7. The stove as described in claim 6, characterized in that, The stopcock valve has a single gas flow channel, the opening of which is adjusted by rotating the stopcock valve, and the gas flow channel is connected to the inner ring outer chamber of the flame control valve.

8. The stove as described in claim 7, characterized in that, The cooktop also includes a control unit and a rotation detection unit, wherein the control unit is electrically connected to the rotation detection unit, the outer ring solenoid valve, and the inner ring solenoid valve; The rotation detection unit is used to detect the rotation angle of the plug valve; The control unit controls the opening and closing of the outer ring solenoid valve and the inner ring solenoid valve based on the first detection result of the rotation detection unit.

9. The stove as described in claim 7, characterized in that, The cooktop also includes a control unit and a rotation detection unit, wherein the control unit is electrically connected to the rotation detection unit, the outer ring solenoid valve, and the inner ring solenoid valve; The rotation detection unit is used to detect the rotation angle of the plug valve; The control unit controls the opening and closing of the outer ring solenoid valve and the inner ring solenoid valve based on the first detection result of the rotation detection unit. The rotation detection unit includes a micro switch, which is electrically connected to the control unit; The micro switch includes an inclined paddle, and a trigger plate is sleeved on the valve stem of the plug valve. The trigger plate has a protrusion that extends a predetermined distance along the circumference of the trigger plate, and the protrusion length of the protrusion is set to be able to press the paddle.

10. The stove as described in claim 8, characterized in that, The cooktop also includes an input unit, which is electrically connected to the control unit; The input unit is used to send command signals to the control unit, and the control unit also controls the opening and closing of the outer loop solenoid valve and the inner loop solenoid valve according to the command signals from the input unit.

11. The stove as described in claim 8, characterized in that, The cooktop also includes a scene detection unit, which is electrically connected to the control unit; The scene detection unit is used to detect the current cooking scene, and the control unit controls the opening and closing of the outer ring solenoid valve and the inner ring solenoid valve according to the second detection result of the scene detection unit.

12. The stove as described in claim 10, characterized in that, The cooktop also includes an electronically controlled actuator, which is used to drive the valve stem of the stopcock valve to rotate. The electronically controlled actuator is electrically connected to the control unit, and the control unit controls the electronically controlled actuator according to the command signal.

13. The stove as described in claim 11, characterized in that, The cooktop also includes an electronically controlled actuator, which drives the valve stem of the stopcock valve to rotate. The electronically controlled actuator is electrically connected to the control unit, and the control unit controls the electronically controlled actuator according to the second detection result.

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