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; 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 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 first port and the second port of the inner ring throttling channel are respectively connected to the inner ring outer chamber and the inner ring inner chamber, and the inner ring throttling channel has a first throttling hole and a second throttling hole arranged sequentially from the first port to the second port, the opening size of the first throttling hole being larger than the opening size of the second throttling hole; a bypass channel connects the inner ring throttling channel and the outer ring outer chamber; the bypass channel is opened and closed as the outer ring solenoid valve opens and closes the outer ring flow path. The longitudinal volume of this flame control valve can be reduced, while making 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 shell is provided with an inner ring inner chamber, an inner ring outer chamber, an outer ring inner chamber, an outer ring outer chamber, an inner ring interception channel, and a bypass channel;

[0009] The inner ring chamber is connected to the outer ring chamber.

[0010] The inner ring outer chamber is connected to the plug valve;

[0011] 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.

[0012] The inner ring chamber and the outer ring chamber are respectively connected to the inner ring burner cap and the outer ring burner cap of the burner;

[0013] The first port and the second port 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 inner ring interception channel is provided with a first interception hole and a second interception hole from the first port to the second port in sequence. The opening size of the first interception hole is larger than the opening size of the second interception hole.

[0014] The bypass channel connects the inner ring interception channel and the outer ring outer chamber;

[0015] The bypass channel is opened and closed as the outer loop solenoid valve opens and closes the outer loop flow path.

[0016] 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.

[0017] Preferably, the fire control valve further includes a first adjusting pin and a second adjusting pin;

[0018] The first adjusting pin has a first choke hole, and the second adjusting pin has a second choke hole;

[0019] The first and second adjusting pins are located inside the inner ring intercepting channel and are used to adjust the flow rate of the inner ring intercepting channel;

[0020] The first intercepting hole is connected to the side wall and the end face of the first adjusting pin, and the second intercepting hole is connected to the side wall and the end face of the second adjusting pin.

[0021] The housing is also provided with a first interception mounting hole and a second interception mounting hole that extend from the outside of the housing to the inner ring interception channel. The first adjusting pin and the second adjusting pin are respectively installed in the first interception mounting hole and the second interception mounting hole.

[0022] Preferably, the housing includes an outer shell portion and an inner shell portion;

[0023] The inner shell is fixed inside the outer shell, the inner ring inner cavity and the outer ring inner cavity are formed in the inner shell, and the inner ring outer cavity and the outer ring outer cavity are formed in the outer shell.

[0024] Preferably, an open end of the housing is connected to an outer ring solenoid valve, and a first straight hole extending in a direction parallel to the movement of the outer ring solenoid valve is formed in the wall of the housing. The first straight hole extends from the open end to a first throttling hole, and the straight hole port of the first straight hole near the open end is closed by a sealing ring, which is sandwiched between the outer ring solenoid valve and the straight hole port.

[0025] Preferably, the bypass channel is located between the second throttling hole and the straight hole port, and the inner shell is provided with an outer ring valve seat. The outer ring valve plug of the outer ring solenoid valve cooperates with the outer ring valve seat to open and close the outer ring flow path. The bypass channel is close to the outer ring valve seat and can be closed by the outer peripheral surface of the outer ring valve plug.

[0026] Preferably, the inner ring chamber and the outer ring chamber are connected to the inner ring burner cap and the outer ring burner cap of the burner through the inner ring gas outlet channel and the outer ring gas outlet channel, respectively;

[0027] The inner ring outer chamber is connected to the stopcock valve through the air intake channel.

[0028] A stove comprising a stopcock valve, a flame control valve as described above, and a burner.

[0029] Preferably, the plug valve has a single gas flow channel, the opening of which is adjusted by rotating the plug valve, and the gas flow channel is connected to the air inlet channel of the flame control valve.

[0030] Preferably, the cooktop also includes a control unit, which is electrically connected to the plug valve, the outer ring solenoid valve, and the inner ring solenoid valve;

[0031] The control unit controls the opening and closing of the outer and inner solenoid valves based on the rotation angle of the plug valve.

[0032] Preferably, the cooktop also includes an input unit, which is electrically connected to the control unit;

[0033] 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.

[0034] Preferably, the cooktop also includes a detection unit, which is electrically connected to the control unit;

[0035] The detection unit is used to detect the current cooking scenario, and the control unit controls the opening and closing of the outer and inner loop solenoid valves based on the detection results of the detection unit.

[0036] Preferably, 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;

[0037] The rotation detection unit is used to detect the rotation angle of the plug valve;

[0038] The control unit controls the opening and closing of the outer and inner solenoid valves based on the first detection result of the rotation detection unit.

[0039] The rotation detection unit includes a micro switch, which is electrically connected to the control unit;

[0040] 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.

[0041] Preferably, the stove also includes an alarm device, which is electrically connected to the control unit;

[0042] 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, the control alarm device will issue a prompt.

[0043] Preferably, the cooktop also includes an electronically controlled actuator, which is used to drive the valve stem of the plug 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 or the second detection result.

[0044] 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

[0045] Figure 1 This is a top view 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; Outer housing 131; First straight hole 132; Open end 134; Sealing ring 136; Inner housing 138; Air inlet passage 141; Inner ring air outlet passage 142; Outer ring air outlet passage 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; bypass channel 149; connecting channel 151; inner ring solenoid valve 161; outer ring solenoid valve 162; outer ring valve plug 1621; first adjusting pin 171; first throttling hole 172; first throttling mounting hole 173; second adjusting pin 181; second throttling hole 182; second 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, and an inner ring solenoid valve 161.

[0060] The housing 130 is provided with an inner ring inner chamber 144, an inner ring outer chamber 145, an outer ring inner chamber 146, an outer ring outer chamber 147, an inner ring choke channel 148, and a bypass channel 149; the inner ring inner chamber 144 is connected to the outer ring outer chamber 147; the inner ring outer chamber 145 is connected to the plug valve 110; the 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, and the 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 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.

[0061] The first and second ports of the inner ring intercepting channel 148 are respectively connected to the inner ring outer chamber 145 and the inner ring inner chamber 144. The inner ring intercepting channel 148 is provided with a first intercepting hole 172 and a second intercepting hole 182 from the first port to the second port. The opening size of the first intercepting hole 172 is larger than the opening size of the second intercepting hole 182. The bypass channel 149 connects the inner ring intercepting channel 148 and the outer ring outer chamber 147. The bypass channel 149 is opened and closed as the outer ring solenoid valve 162 opens and closes the outer ring flow path.

[0062] 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 through the inner ring solenoid valve 161 and the outer ring solenoid valve 162, as well as setting the inner ring interception channel 148, making the flame adjustment of the stove 100 more intelligent.

[0063] The fire control valve 120 also includes a first adjusting pin 171 and a second adjusting pin 181; the first adjusting pin 171 has a first throttling hole 172, and the second adjusting pin 181 has a second throttling hole 182; the first adjusting pin 171 and the second adjusting pin 181 are disposed in the inner ring throttling channel 148 and are used to adjust the flow rate of the inner ring throttling channel 148; the first throttling hole 172 is connected to the side wall and the end face of the first adjusting pin 171, and the second throttling hole 182 is connected to the side wall and the end face of the second adjusting pin 181, respectively; the housing 130 is also provided with a first throttling mounting hole 173 and a second throttling mounting hole 183 extending from the outside of the housing 130 to the inner ring throttling channel 148, and the first adjusting pin 171 and the second adjusting pin 181 are respectively installed in the first throttling mounting hole 173 and the second throttling mounting hole 183.

[0064] 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.

[0065] The regulating pin mainly achieves flow interception through intercepting holes. The cross-sectional area of ​​the intercepting holes is much smaller than that of normal fluid channels such as the inner loop flow path, outer loop flow path, inner loop intercepting channel 148, and bypass channel 149. Only a small amount of fluid can flow through the intercepting holes. Although the opening size of the first intercepting hole 172 is larger than that of the second intercepting hole 182, the flow area of ​​the first intercepting hole 172 is still much smaller than that of normal fluid channels.

[0066] A portion of the first intercepting hole 172 penetrates the side wall of the first adjusting pin 171. The first intercepting hole 172 forms a "T" shape in the first adjusting pin 171, including a transverse through portion and a longitudinal through portion. The diameter of the first intercepting hole 172 where the transverse through portion is located is smaller than the diameter of the first intercepting mounting hole 173 where the first adjusting pin 171 is located at the corresponding position. This results in a gap being formed between the side of the first adjusting pin 171 and the hole wall of the first intercepting mounting hole 173 at that position, allowing fluid entering from the inner ring intercepting channel 148 to pass through this gap and enter the first intercepting hole 172 of the first adjusting pin 171.

[0067] A portion of the second intercepting hole 182 penetrates the side wall of the second adjusting pin 181. The second intercepting hole 182 forms a "T" shape in the second adjusting pin 181, including a transverse through portion and a longitudinal through portion. The diameter of the second intercepting hole 182 where the transverse through portion is located is smaller than the diameter of the second intercepting mounting hole 183 where the second adjusting pin 181 is located at the corresponding position. This creates a gap between the side of the second adjusting pin 181 and the wall of the second 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 second intercepting hole 182 of the second adjusting pin 181. This allows fluid to flow from the outer chamber of the inner ring 145 through the first intercepting hole 172 and the second intercepting hole 182 to the inner chamber of the inner ring 144, but only a small amount of fluid is allowed to flow.

[0068] 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.

[0069] Figure 3 and Figure 4 These are schematic diagrams of the cross-sectional structure of the same section of the fire control valve 120.

[0070] like Figure 3 and 4 As shown, the housing 130 includes an outer shell portion 131 and an inner shell portion 138.

[0071] The inner shell portion 138 is fixed inside the outer shell portion 131. An inner ring inner chamber 144 and an outer ring inner chamber 146 are formed in the inner shell portion 138, while an inner ring outer chamber 145 and an outer ring outer chamber 147 are formed in the outer shell portion 131. In the inner shell portion 138, the inner ring inner chamber 144 and the outer ring inner chamber 146 are adjacent. The inner ring inner cavity is located inside the inner ring outer chamber 145, and the outer ring inner chamber 146 is located inside the outer ring outer cavity. In the outer shell portion 131, the inner ring outer chamber 145 and the outer ring outer chamber 147 are adjacent. The inner ring inner chamber 144 and the outer ring inner chamber 146 are separated by a partition wall, and the inner ring outer chamber 145 and the outer ring outer chamber 147 are also separated by a partition wall.

[0072] An open end 134 of the housing portion 131 is connected to an outer ring solenoid valve 162. A first straight hole 132 extending in a direction parallel to the movement of the outer ring solenoid valve 162 is formed in the wall of the housing portion 131. The first straight hole 132 extends from the open end 134 to a first throttling hole 172. The straight hole port of the first straight hole 132 near the open end 134 is closed by a sealing ring 136. The sealing ring 136 is sandwiched between the outer ring solenoid valve 162 and the straight hole port.

[0073] The straight hole extends inward from the opening end 134 of the outer shell 131. During processing, it is only necessary to drill a straight hole inward from the outer shell 131, and the processing technology is relatively simple.

[0074] The bypass channel 149 is located between the second throttling hole 182 and the straight hole port. The inner shell 138 is provided with an outer ring valve seat. The outer ring valve plug 1621 of the outer ring solenoid valve 162 cooperates with the outer ring valve seat to open and close the outer ring flow path. The bypass channel 149 is close to the outer ring valve seat and can be closed by the outer peripheral surface of the outer ring valve plug 1621.

[0075] Figure 3 The image shows the closed state of the outer ring solenoid valve 162. In this state, the outer peripheral surface of the outer ring valve plug 1621 of the outer ring solenoid valve 162 closes the bypass channel 149, so that the outer ring outer chamber 147 cannot be connected to the inner ring throttling channel 148.

[0076] When the outer ring solenoid valve 162 is opened, the outer ring valve plug 1621 of the outer ring solenoid valve 162 will move to the right (open end 134 side), so that the outer peripheral surface of the outer ring valve plug 1621 no longer abuts against the inlet of the bypass channel 149, the bypass channel 149 is opened, and the outer ring outer chamber 147 is connected to the inner ring throttling channel 148.

[0077] The inner ring chamber 144 and the outer ring chamber 146 are connected to the inner and outer ring burner caps of the burner 190 via the inner ring outlet passage 142 and the outer ring outlet passage 143, respectively; the inner ring outer chamber 145 is connected to the stopcock valve 110 via the inlet passage 141. The inner ring chamber 144 is connected to the outer ring outer chamber 147 via the connecting passage 151. The flow areas of the inlet passage 141, the inner ring outlet passage 142, the outer ring outlet passage 143, and the connecting passage 151 are the same as or larger than the flow areas of the inner and outer ring flow paths, so as to ensure normal gas supply to the outer and inner ring burner caps. The flow area of ​​the bypass channel 149 is equal to or slightly smaller than the flow area of ​​the inner ring intercepting channel 148 except for the intercepting holes, but much larger than the flow area of ​​the first intercepting hole 172 and the second intercepting hole 182 in the inner ring intercepting channel 148, so as to achieve normal gas supply to the inner ring intercepting channel 148 through the bypass channel 149.

[0078] Regarding the distribution of the holes, the fire control valve 120 has a first straight hole 132 formed in the outer shell 131. The first straight hole 132 is part of the inner ring interception channel 148. Relative to the inner cavity, the inner ring interception channel 148 and the connecting channel 151 are respectively arranged on both sides, avoiding mutual interference and multiple holes in the same location, which would weaken the strength.

[0079] 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.

[0080] 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.

[0081] 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.

[0082] The rotation detection unit 202 includes a micro switch 114, which is electrically connected to the control unit 201.

[0083] 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.

[0084] 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.

[0085] 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).

[0086] 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.

[0087] 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.

[0088] 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.

[0089] 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.

[0090] 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.

[0091] 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.

[0092] 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.

[0093] 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.

[0094] 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.

[0095] 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.

[0096] 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.

[0097] 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.

[0098] 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.

[0099] 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.

[0100] The following describes the gas flow within the flame control valve 120 when the solenoid valve is opened and closed.

[0101] When both the inner ring solenoid valve 161 and the outer ring solenoid valve 162 are open, the inner ring flow path and the outer ring flow path flow normally.

[0102] When both the inner ring solenoid valve 161 and the outer ring solenoid valve 162 are closed, the inner ring flow path is blocked, and the gas flows from the inner ring outer chamber 145 into the inner ring inner chamber 144 through the inner ring blocking channel 148. The gas flow rate depends on the opening size of the second blocking orifice 182; the outer ring flow path is closed.

[0103] When the inner loop solenoid valve 161 is open but the outer loop solenoid valve 162 is closed, the inner loop flow path is open normally; the outer loop flow path is closed.

[0104] When the inner ring solenoid valve 161 is closed but the outer ring solenoid valve 162 is open, the inner ring flow path is blocked. Part of the gas flows from the inner ring outer chamber 145 into the inner ring inner chamber 144 through the inner ring blocking channel 148, and another part of the gas flows from the inner ring outer chamber 145 into the inner ring inner chamber 144 in sequence through the inner ring blocking channel 148, the bypass channel 149, the outer ring outer chamber 147, and the connecting channel 151. The gas flow rate depends on the opening size of the first blocking orifice 172. The outer ring flow path is also blocked. Gas flows from the inner ring outer chamber 145 into the outer ring inner chamber 146 in sequence through the inner ring blocking channel 148, the bypass channel 149, and the outer ring outer chamber 147. The gas flow rate depends on the opening size of the first blocking orifice 172.

[0105] 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.

[0106] 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.

[0107] When the stove 100 enters the flame adjustment mode, it has the following flame adjustment modes:

[0108] 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.

[0109] Mode 2: When both the inner and outer ring solenoid valves are 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, and the gas flow rate depends on the opening size of the second throttling orifice 182, 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.

[0110] 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.

[0111] 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, only the inner ring throttling channel 148 has gas passing through, and the gas flow rate depends on the opening size of the first throttling orifice 172, thus keeping the inner ring flame low), and the outer ring flame remains low (at this time, the outer ring is also supplied with gas through the inner ring throttling channel 148, and the gas flow rate depends on the opening size of the first throttling orifice 172). Since both the inner and outer ring flames are already low at this time, even if the stopcock valve 110 is rotated, the adjustment of the flame intensity is very slight.

[0112] 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.

[0113] 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.

[0114] 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.

[0115] 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.

[0116] Modes one through four can 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).

[0117] 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.

[0118] In this embodiment, the flame control valve 120 has two adjusting pins in the inner ring throttling channel 148. The flame size of the small flame in mode four depends on the first throttling hole 172 of the first adjusting pin 171, while the flame size of the small flame in mode two depends on the second throttling hole 182 of the second adjusting pin 181. Since the inner ring throttling channel 148 needs to supply gas to both the inner and outer ring flames simultaneously in mode four, the second throttling hole 182 is set to be larger than the first throttling hole 172 to meet the gas supply requirements. The flame size adjustment of modes two and four can be achieved by adjusting the opening size of the first throttling hole 172 and the second throttling hole 182, that is, by replacing the first adjusting pin 171 and the second adjusting pin 181. By replacing the adjusting pins, the cooking scenarios corresponding to modes two and four can be adjusted.

[0119] When the stop valve 110 is equipped with an electric actuator, multiple stepped modes can be added to modes one through four to accommodate more detailed cooking scenarios. For example, when frying scallion pancakes, it can directly correspond to the state where the stop valve 110 is turned to 20° in mode one. This allows for one-button entry into the cooking scenario for a specific food, enabling simple operation and avoiding manual heat adjustment that could lead to cooking failure. Modes two and four, since they already involve a flow-stopping orifice, have extremely small adjustment ranges through the rotation of the stop valve 110, and therefore generally correspond to a single cooking scenario.

[0120] 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.

[0121] This embodiment also provides a flame adjustment method, which is applied to the above-mentioned stove 100.

[0122] The method of adjusting the heat includes:

[0123] Determine whether to enter flame adjustment mode.

[0124] 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.

[0125] 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.

[0126] 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.

[0127] 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.

[0128] 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, used to regulate the gas flow between a stopcock valve and the burner of a stove, characterized in that, The fire control valve includes: a housing, an outer ring solenoid valve, and an inner ring solenoid valve; The shell is provided with an inner ring inner chamber, an inner ring outer chamber, an outer ring inner chamber, an outer ring outer chamber, an inner ring interception channel, and a bypass channel; The inner ring chamber is connected to the outer ring chamber. The inner ring outer chamber is connected to the plug valve; 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 inner ring chamber and the outer ring chamber are respectively connected to the inner ring burner cap and the outer ring burner cap of the burner; The first port and the second port 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 inner ring interception channel is provided with a first interception hole and a second interception hole from the first port to the second port in sequence. The opening size of the first interception hole is larger than the opening size of the second interception hole. The bypass channel connects the inner ring interception channel and the outer ring outer chamber; The bypass channel is opened and closed as the outer loop solenoid valve opens and closes the outer loop flow path.

2. The flame control valve as claimed in claim 1, characterized in that, The fire control valve also includes a first adjusting pin and a second adjusting pin; The first adjusting pin has a first choke hole, and the second adjusting pin has a second choke hole; The first and second adjusting pins are located inside the inner ring intercepting channel and are used to adjust the flow rate of the inner ring intercepting channel; The first intercepting hole is connected to the side wall and the end face of the first adjusting pin, and the second intercepting hole is connected to the side wall and the end face of the second adjusting pin. The housing is also provided with a first interception mounting hole and a second interception mounting hole that extend from the outside of the housing to the inner ring interception channel. The first adjusting pin and the second adjusting pin are respectively installed in the first interception mounting hole and the second interception mounting hole.

3. The flame control valve as claimed in claim 1, characterized in that, The casing includes an outer shell and an inner shell; The inner shell is fixed inside the outer shell, the inner ring inner cavity and the outer ring inner cavity are formed in the inner shell, and the inner ring outer cavity and the outer ring outer cavity are formed in the outer shell.

4. The fire control valve as described in claim 3, characterized in that, An open end of the housing is connected to an outer ring solenoid valve. A first straight hole is formed in the wall of the housing, extending in a direction parallel to the movement of the outer ring solenoid valve. The first straight hole extends from the open end to a first choke hole. The straight hole port of the first straight hole near the open end is closed by a sealing ring, which is sandwiched between the outer ring solenoid valve and the straight hole port.

5. The flame control valve as claimed in claim 4, characterized in that, The bypass channel is located between the second throttling hole and the straight hole port. The inner shell is provided with an outer ring valve seat. The outer ring valve plug of the outer ring solenoid valve cooperates with the outer ring valve seat to open and close the outer ring flow path. The bypass channel is close to the outer ring valve seat and can be closed by the outer peripheral surface of the outer ring valve plug.

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

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

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

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 detection unit, which is electrically connected to the control unit; The detection unit is used to detect the current cooking scenario, and the control unit controls the opening and closing of the outer and inner loop solenoid valves based on the detection results of the detection unit.

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