Flame control valves and stoves

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, and an inner ring solenoid valve; a stopcock valve connected to the outer ring outer chamber, and the inner ring inner chamber and outer ring inner chamber respectively connected to the inner ring burner cap and 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 port and the second port of the outer ring intercepting channel are respectively connected to the inner ring outer chamber and the outer ring inner chamber; the first port and the second port of the connecting channel are respectively connected to the inner ring inner chamber and the outer ring outer chamber. This flame control valve simplifies the structure of the stopcock valve, reduces its longitudinal volume, and makes the flame control of the stove 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, and an inner ring solenoid 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 outer ring interception channel, and a connecting channel;

[0009] The plug valve is connected to the outer 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 outer ring interception channel are respectively connected to the outer chamber of the inner ring and the inner chamber of the outer ring;

[0012] The first and second ports of the connecting channel are respectively connected to the inner ring inner cavity and the outer ring outer cavity.

[0013] In this solution, the flame control valve can replace the original plug valve to realize the function of switching the outer ring flame, which simplifies the structure of the plug valve and reduces its longitudinal volume. At the same time, the flame control valve can realize multiple flame adjustment states corresponding to different cooking modes by opening and closing the inner and outer ring flow paths and setting the inner ring interception channel through the inner and outer ring solenoid valves, making the flame adjustment of the stove more intelligent.

[0014] Preferably, the fire control valve further includes an outer ring adjusting pin, which is disposed within the outer ring throttling channel and used to adjust the flow rate of the outer ring throttling channel.

[0015] Preferably, 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.

[0016] Preferably, the housing is further provided with an outer ring interception mounting hole extending 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.

[0017] Preferably, the housing is further provided with an air inlet channel, an inner ring air outlet channel, and an outer ring air outlet channel;

[0018] The plug valve is connected to the outer ring outer chamber through the air inlet channel, the inner ring burner cap is connected to the inner ring inner chamber through the inner ring air outlet channel, and the outer ring burner cap is connected to the outer ring inner chamber through the inner ring air outlet channel.

[0019] A stove comprising a stopcock valve, a flame control valve as described above, and a burner.

[0020] 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 outer ring chamber of the flame control valve.

[0021] 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;

[0022] The rotation detection unit is used to detect the rotation angle of the plug valve;

[0023] 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.

[0024] Preferably, the cooktop further includes an input unit, which is electrically connected to the control unit;

[0025] 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;

[0026] Preferably, the cooktop further includes a scene detection unit, which is electrically connected to the control unit;

[0027] 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.

[0028] 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;

[0029] The rotation detection unit is used to detect the rotation angle of the plug valve;

[0030] 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.

[0031] The rotation detection unit includes a micro switch, which is electrically connected to the control unit;

[0032] 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.

[0033] 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.

[0034] Preferably, the cooktop further includes an input unit and a scene detection unit, both of which are connected to the control unit;

[0035] 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;

[0036] 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.

[0037] Preferably, the stove further includes an alarm device, which is electrically connected to the control unit;

[0038] 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.

[0039] The positive and progressive effects of this invention are as follows: the flame control valve can replace the original plug valve to realize the function of switching the outer ring flame, which simplifies the structure of the plug valve and reduces its longitudinal volume. At the same time, the flame control valve can realize multiple flame adjustment states corresponding to different cooking modes by opening and closing the inner and outer ring flow paths and setting the inner ring interception channel through the inner ring solenoid valve and the outer ring solenoid valve, making the flame adjustment of the stove more intelligent. Attached Figure Description

[0040] Figure 1 This is a three-dimensional structural diagram of a stove according to an embodiment of the present invention.

[0041] Figure 2 This is a three-dimensional structural diagram of a fire control valve according to an embodiment of the present invention.

[0042] Figure 3 This is a schematic cross-sectional view of a fire control valve according to an embodiment of the present invention.

[0043] Figure 4 This is a three-dimensional structural diagram of a plug valve according to an embodiment of the present invention.

[0044] Figure 5 This is a schematic diagram of the control system of a stove according to an embodiment of the present invention.

[0045] Figure 6 This is a schematic diagram of the control system of a stove according to another embodiment of the present invention.

[0046] Figure 7 This is a schematic diagram of the control system of a stove according to another embodiment of the present invention.

[0047] 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; 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; Outer ring throttling channel 149; Connecting channel 151; Inner ring solenoid valve 161; Outer ring solenoid valve 162; 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

[0048] 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.

[0049] like Figure 1-4 As shown, this embodiment provides a stove 100, which includes a stopcock valve 110, a flame control valve 120, and a burner 190.

[0050] The plug valve 110 is used to regulate the flow rate of gas by rotating itself.

[0051] 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.

[0052] 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.

[0053] The fire control valve 120 includes: a housing 130, an outer ring solenoid valve 162, and an inner ring solenoid valve 161.

[0054] 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 outer ring choke channel 149, and a connecting channel 151. A stopcock valve 110 is connected to the outer ring outer chamber 147. 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 flow path between the outer ring outer chamber 147 and the outer ring inner chamber 146. The first port and the second port of the outer ring choke channel 149 are respectively connected to the inner ring outer chamber 145 and the outer ring inner chamber 146. The first port and the second port of the connecting channel 151 are respectively connected to the inner ring inner chamber 144 and the outer ring outer chamber 147.

[0055] The flame control valve 120 can replace the original stopcock valve 110 to realize the function of switching the outer ring flame, which simplifies the structure of the stopcock valve 110 and reduces its longitudinal volume. At the same time, the flame control valve 120 can realize multiple flame adjustment states corresponding to different cooking modes by opening and closing the inner and outer ring flow paths and setting the inner ring interception channel through the inner ring solenoid valve 161 and the outer ring solenoid valve 162, making the flame adjustment of the stove 100 more intelligent.

[0056] 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.

[0057] The outer ring adjusting pin 181 is provided with an outer ring intercepting hole 182, which is connected to the side wall and the end face of the outer ring adjusting pin 181 respectively.

[0058] The housing 130 is also provided with an outer ring interception mounting hole 183 that extends from the outside of the housing 130 to the inside of the housing 130. An outer ring adjusting pin 181 is installed in the outer ring interception mounting hole 183, and the outer ring interception mounting hole 183 extends through the outer ring interception channel 149.

[0059] 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.

[0060] 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 channel, outer ring channel, outer interception channel, and inner interception channel. Only a small amount of fluid can flow through the interception hole.

[0061] 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 adjusting pin 181 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 creates a gap 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. This allows fluid entering from the outer ring intercepting channel 149 to pass through this gap and enter the outer ring intercepting hole 182 of the outer ring adjusting pin 181, thereby connecting the inner ring outer chamber 145 and the outer ring inner chamber 146, but only allowing a small amount of fluid to flow.

[0062] 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.

[0063] The housing 130 is also provided with an air intake channel 141, an inner ring air outlet channel 142, and an outer ring air outlet channel 143.

[0064] The plug valve 110 is connected to the outer ring outer chamber 147 through the air intake passage 141, the inner ring burner is connected to the inner ring inner chamber 144 through the inner ring air outlet passage 142, and the outer ring burner is connected to the outer ring inner chamber 146 through the inner ring air outlet passage 142.

[0065] like Figure 5 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.

[0066] 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.

[0067] 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.

[0068] The rotation detection unit 202 includes a micro switch 114, which is electrically connected to the control unit 201.

[0069] like Figure 4 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.

[0070] 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.

[0071] 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).

[0072] 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 plug 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 circumference, and the protrusion lengths of the first protrusion and the second protrusion are both set to be able to press the paddle 115.

[0073] 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.

[0074] 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.

[0075] 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.

[0076] 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.

[0077] 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.

[0078] 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.

[0079] In another embodiment, such as Figure 6 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.

[0080] 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.

[0081] In yet another embodiment, such as Figure 7 As 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.

[0082] 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.

[0083] 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.

[0084] 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.

[0085] 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.

[0086] The following describes the gas flow within the flame control valve 120 when the solenoid valve is opened and closed.

[0087] When the inner loop solenoid valve 161 is open and the outer loop solenoid valve 162 is open, the inner loop flow path flows normally; the outer loop flow path also flows normally.

[0088] When the inner ring solenoid valve 161 is closed and the outer ring solenoid valve 162 is closed, the inner ring flow path is closed, but gas enters the inner ring inner chamber 144 from the outer ring outer chamber 147 through the connecting channel 151, so that the inner ring inner chamber 144 is supplied with gas normally; the outer ring flow path is closed.

[0089] When the inner ring solenoid valve 161 is open and the outer ring solenoid valve 162 is closed, the inner ring flow path flows normally, and gas is supplied from the outer ring outer chamber 147 to the inner ring inner chamber 144; the outer ring flow path is blocked, and gas flows from the outer ring outer chamber 147 through the inner ring inner chamber 144, the inner ring outer chamber 145, and the outer ring blocking channel 149 into the outer ring inner chamber 146.

[0090] When the inner loop solenoid valve 161 is closed and the outer loop solenoid valve 162 is open, the inner loop flow path flows normally; the outer loop flow path also flows normally.

[0091] 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.

[0092] 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.

[0093] When the stove 100 enters the flame adjustment mode, it has the following flame adjustment modes:

[0094] Mode 1: When the outer ring solenoid valve 162 is open, the burner 190 has both inner and outer ring flames, and the flame intensity is adjusted as the plug valve 110 is rotated.

[0095] Mode 2: When the outer ring solenoid valve 162 is closed and the inner ring solenoid valve 161 is closed, the outer ring flame of the burner 190 is not lit, while the inner ring flame is normal. The inner ring flame is adjusted as the plug valve 110 is rotated.

[0096] Mode 3: When the outer ring solenoid valve 162 is closed and the inner ring solenoid valve 161 is open, the inner ring flame is adjusted with the rotation of the plug valve 110, and the outer ring flame remains low (at this time, the outer ring outlet channel 143 supplies gas through the outer ring throttling channel 149, so that the outer ring flame remains low).

[0097] 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.

[0098] Mode 2 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.

[0099] Mode 3 is suitable for cooking small pots where the flame radius needs to be controlled, preventing the flame from leaping out from the edge of the small pot and affecting the cooking experience.

[0100] 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.

[0101] When the stop valve 110 is equipped with an electric actuator, multiple stepped modes can be added in modes one to three 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.

[0102] 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.

[0103] This embodiment also provides a flame adjustment method, which is applied to the above-mentioned stove 100.

[0104] The method of adjusting the heat includes:

[0105] Determine whether to enter flame adjustment mode.

[0106] 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.

[0107] 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.

[0108] 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.

[0109] 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.

[0110] 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, and an inner ring solenoid 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 outer ring interception channel, and a connecting channel; The plug valve is connected to the outer 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 outer ring interception channel are respectively connected to the outer chamber of the inner ring and the inner chamber of the outer ring; The first and second ports of the connecting channel are respectively connected to the inner ring inner cavity and the outer ring outer cavity.

2. The fire control valve as described in claim 1, characterized in that, The fire control valve also includes an outer ring adjusting pin, which is located within the outer ring throttling channel and is used to adjust the flow rate of the outer ring throttling channel.

3. The fire control valve as described in claim 2, characterized in that, 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.

4. The fire control valve as described in claim 3, characterized in that, 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.

5. The fire control valve as described in claim 1, characterized in that, The housing is also provided with an air inlet channel, an inner ring air outlet channel, and an outer ring air outlet channel; The plug valve is connected to the outer ring outer chamber through the air inlet channel, the inner ring burner cap is connected to the inner ring inner chamber through the inner ring air outlet channel, and the outer ring burner cap is connected to the outer ring inner chamber through the inner ring air outlet channel.

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 outer ring 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 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.

10. 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.

11. 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.

12. The stove as described in claim 9, 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 10, 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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