Fire control valve and stove

Abstract

The invention relates to the field of kitchen utensils, and particularly discloses a fire control valve and a kitchen range. The fire control valve comprises a shell, an outer ring electromagnetic valve and an inner ring electromagnetic valve; the inner ring electromagnetic valve is used for opening and closing a first inner ring flow path between the inner ring outer cavity and the inner ring inner cavity, and the outer ring electromagnetic valve is used for opening and closing an outer ring flow path between the outer ring outer cavity and the outer ring inner cavity; the inner ring inner chamber and the outer ring inner chamber are respectively communicated with an inner ring fire cover and an outer ring fire cover of the combustor; a first port and a second port of the inner ring closure channel are communicated with the inner ring outer cavity and the inner ring inner cavity respectively, a first closure hole and a second closure hole are sequentially formed in the inner ring closure channel from the first port to the second port, and the opening size of the first closure hole is larger than that of the second closure hole; the bypass channel is communicated with the inner ring closure channel and the outer ring outer cavity; the bypass channel is opened and closed along with the opening and closing of the outer ring solenoid valve. The longitudinal size of the fire control valve can be reduced, and meanwhile fire adjustment of the stove is more intelligent.

Description

Technical Field

[0001] The invention relates to the field of kitchen utensils, and in particular to a fire control valve and a stove. Background Art

[0002] In daily stoves, a plug valve is usually used to adjust the firepower of the stove burner and the on-off of the gas. The plug valve is directly connected to the burner, and the on-off of the gas and the firepower of the burner are adjusted by rotating the plug valve.

[0003] The plug valve usually consists of a valve body, a valve core, a valve stem, a micro switch, and other additional devices such as a solenoid valve. The main working principle of the gas plug valve is that the gas enters through the air inlet of the valve body, passes through the solenoid valve in turn, then enters the valve core, and finally passes through the side opening of the valve core to connect with the side opening of the outlet pipe, thereby supplying gas to the gas stove, which involves a complex gas control process.

[0004] Among the common gas stopcocks currently, the overall structure of the stopcock is relatively complex, and it contains many functional components and parts, and the coordination relationship between the functional components is also relatively cumbersome and tight. Since the stopcock has too many parts and components and needs to be converted from one-channel air intake to two-channel air outlet, the longitudinal space that needs to be reserved in the stopcock area is relatively large, which leads to an increase in the longitudinal space that needs to be reserved for the stove as a whole, resulting in a low internal space utilization rate of the stove. At the same time, in conventional gas stoves using inner and outer ring burners and dual-channel stopcocks, the use of electric control valves such as motor valves and proportional valves to adjust the fire has the problem of too high cost of adjusting the fire, and the use of strong suction valves to adjust the fire has the problem of too few fire adjustment states for different scenarios and the fire adjustment is not intelligent enough. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a fire control valve and a stove in order to overcome the defects of the prior art plug valve, such as complex structure, large longitudinal space occupation and insufficient intelligent fire adjustment.

[0006] The present invention solves the above technical problems through the following technical solutions:

[0007] A fire control valve is used to adjust the gas flow between the plug valve of a stove and the burner of the stove. The fire control valve comprises: a shell, 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 intercepting channel and a bypass channel;

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

[0010] The outer chamber of the inner ring 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 inner chamber and the outer ring inner chamber are respectively connected to the inner ring fire cover and the outer ring fire cover of the burner;

[0013] The first port and the second port of the inner ring intercepting channel are respectively connected to the inner ring outer chamber and the inner ring inner chamber, and the inner ring intercepting channel is provided with a first intercepting hole and a second intercepting hole in sequence from the first port to the second port, and the opening size of the first intercepting hole is larger than the opening size of the second intercepting hole;

[0014] The bypass channel is connected to the inner ring interception channel and the outer ring outer chamber;

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

[0016] In this solution, the fire control valve can replace the original stopcock to realize the function of turning on and off the outer ring fire, so that the structure of the stopcock can be simplified and the longitudinal volume can be reduced. At the same time, the fire control valve can realize a variety of fire adjustment states corresponding to different cooking modes through the opening and closing of the inner ring flow path and the outer ring flow path by the inner ring solenoid valve and the outer ring solenoid valve and the setting of the inner ring interception channel, making the fire adjustment of the stove more intelligent.

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

[0018] The first adjusting nail has a first intercepting hole, and the second adjusting nail has a second intercepting hole;

[0019] The first adjusting pin and the second adjusting pin are arranged in the inner ring intercepting channel and are used to adjust the flow of the inner ring intercepting channel;

[0020] The first intercepting hole is connected to the side wall and the end surface of the first adjusting nail respectively, and the second intercepting hole is connected to the side wall and the end surface of the second adjusting nail respectively;

[0021] The shell is also provided with a first interception installation hole and a second interception installation hole which penetrate from the outer side of the shell to the inner ring interception channel, and the first adjustment nail and the second adjustment nail are respectively installed in the first interception installation hole and the second interception installation hole.

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

[0023] The inner shell part is fixed to the inside of the outer shell part, an inner ring inner chamber and an outer ring inner chamber are formed in the inner shell part, and an inner ring outer chamber and an outer ring outer chamber are formed in the outer shell part.

[0024] Preferably, an open end of the outer shell is connected to the outer ring solenoid valve, and a first straight hole extending in a direction parallel to the moving direction of the outer ring solenoid valve is formed in the wall surface of the outer shell, the first straight hole extends from the open end to the first intercepting hole, and the straight hole port of the first straight hole close to the open end is closed by a sealing ring, and the sealing ring is clamped between the outer ring solenoid valve and the straight hole port.

[0025] Preferably, the bypass channel is arranged between the second shut-off 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, and 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 inner chamber and the outer ring inner chamber are connected to the inner ring fire cover and the outer ring fire cover of the burner through the inner ring gas outlet channel and the outer ring gas outlet channel respectively;

[0027] The outer chamber of the inner ring is connected to the stopcock through an air inlet passage.

[0028] A cooking appliance comprises a plug valve, the above-mentioned fire control valve and a burner.

[0029] 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 air inlet channel of the fire control valve.

[0030] Preferably, the cooker further comprises 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 ring solenoid valve and the inner ring solenoid valve according to the rotation angle of the plug valve.

[0032] Preferably, the cooker further comprises an input unit, and the input unit is electrically connected to the control unit;

[0033] The input unit is used to send a command signal to the control unit, and the control unit also controls the opening and closing of the outer ring solenoid valve and the inner ring solenoid valve according to the command signal of the input unit.

[0034] Preferably, the cooker further comprises a detection unit, and the detection unit is electrically connected to the control unit;

[0035] The 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 detection result of the detection unit.

[0036] Preferably, the cooker further comprises 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 ring solenoid valve and the inner ring solenoid valve according to 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, a trigger plate is sleeved on the valve stem of the plug valve, a protrusion extending a predetermined distance along the circumference of the trigger plate is provided on the trigger plate, and the protruding length of the protrusion is set to be able to press the paddle.

[0041] Preferably, the cooker further comprises an alarm device, which is electrically connected to the control unit;

[0042] 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, the control unit controls the alarm device to issue a prompt.

[0043] Preferably, the cooker further comprises an electronically controlled driver, which is used to drive the valve stem of the plug 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.

[0044] The positive progressive effect of the present invention is that the fire control valve can replace the original plug valve to realize the function of opening and closing the outer ring fire, so that the structure of the plug valve can be simplified and the longitudinal volume can be reduced. At the same time, the fire control valve can realize a variety of fire adjustment states corresponding to different cooking modes through the opening and closing of the inner ring flow path and the outer ring flow path by the inner ring solenoid valve and the outer ring solenoid valve and the setting of the inner ring interception channel, making the fire adjustment of the stove more intelligent. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 The figure is a schematic diagram of a top view of a stove according to an embodiment of the present invention.

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

[0047] Figure 3 Schematic diagram of the cross-sectional structure of a fire control valve according to an embodiment of the present invention.

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

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

[0050] Figure 6 FIG. 1 is a module diagram of a control system of a cooker according to an embodiment of the present invention.

[0051] Figure 7 FIG. 4 is a schematic diagram of a module of a control system of a cooker according to another embodiment of the present invention.

[0052] Figure 8 FIG. 4 is a module schematic diagram of a control system of a cooker according to another embodiment of the present invention.

[0053] Description of reference numerals: cooker 100; stopcock 110; valve stem 111; trigger plate 112; protrusion 113; micro switch 114; paddle 115; fire 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 shut-off 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 shut-off hole 172; first shut-off mounting hole 173; second adjusting pin 181; second shut-off hole 182; second shut-off mounting hole 183; burner 190; control unit 201; rotation detection unit 202; input unit 203; scene detection unit 204. DETAILED DESCRIPTION

[0054] The present invention is further described below by way of embodiments in conjunction with the accompanying drawings, 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 110 , a flame control valve 120 and a burner 190 .

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

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

[0058] The flame control valve 120 is used to adjust the gas flow between the stopcock 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] 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 shut-off channel 148 and a bypass channel 149 are provided in the shell 130; 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 for opening and closing 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 for opening and closing 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 fire cover and the outer ring fire cover of the burner 190.

[0061] The first port and the second port of the inner ring shut-off channel 148 are connected to the inner ring outer chamber 145 and the inner ring inner chamber 144 respectively. The inner ring shut-off channel 148 is provided with a first shut-off hole 172 and a second shut-off hole 182 in sequence from the first port to the second port. The opening size of the first shut-off hole 172 is larger than the opening size of the second shut-off hole 182; the bypass channel 149 connects the inner ring shut-off 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 fire control valve 120 can replace the original stopcock valve 110 to realize the function of opening and closing the outer ring fire, so that the structure of the stopcock valve 110 can be simplified and the longitudinal volume can be reduced. At the same time, the fire control valve 120 can realize a variety of fire adjustment states corresponding to different cooking modes through the opening and closing of the inner ring flow path and the outer ring flow path by the inner ring solenoid valve 161 and the outer ring solenoid valve 162 and the setting of the inner ring interception channel 148, making the fire adjustment of the stove 100 more intelligent.

[0063] The fire control valve 120 also includes a first adjustment nail 171 and a second adjustment nail 181; the first adjustment nail 171 has a first intercepting hole 172, and the second adjustment nail 181 has a second intercepting hole 182; the first adjustment nail 171 and the second adjustment nail 181 are arranged in the inner ring intercepting channel 148 and are used to adjust the flow of the inner ring intercepting channel 148; the first intercepting hole 172 is respectively connected to the side wall and the end face of the first adjustment nail 171, and the second intercepting hole 182 is respectively connected to the side wall and the end face of the second adjustment nail 181; the shell 130 is also provided with a first intercepting mounting hole 173 and a second intercepting mounting hole 183 that penetrate from the outside of the shell 130 to the inner ring intercepting channel 148, and the first adjustment nail 171 and the second adjustment nail 181 are respectively installed in the first intercepting mounting hole 173 and the second intercepting mounting hole 183.

[0064] In this embodiment, the intercepting channel is formed by setting an adjusting pin, but the present invention is not limited thereto, and those skilled in the art can form the intercepting channel by other existing components or other existing forms as needed.

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

[0066] A portion of the first intercepting hole 172 penetrates the side wall of the first adjusting pin 171, and the first intercepting hole 172 forms a "T" shape in the first adjusting pin 171, including a transverse penetration portion and a longitudinal penetration portion. The diameter of the first intercepting hole 172 where the transverse penetration 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, so that at this position, a gap is formed between the side of the first adjusting pin 171 and the hole wall of the first intercepting mounting hole 173, so that the fluid entering from the inner ring intercepting channel 148 can pass through the 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, and the second intercepting hole 182 forms a "T" shape in the second adjusting pin 181, including a transverse penetration portion and a longitudinal penetration portion. The diameter of the second intercepting hole 182 where the transverse penetration 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, so that at this position, a gap is formed between the side of the second adjusting pin 181 and the hole wall of the second intercepting mounting hole 183, so that the fluid entering from the inner ring intercepting channel 148 can pass through the gap and enter the second intercepting hole 182 of the second adjusting pin 181, so that the fluid flows from the inner ring outer chamber 145 through the first intercepting hole 172 and the second intercepting hole 182 to the inner ring inner chamber 144, but only a trace amount of fluid is allowed to flow.

[0068] In this embodiment, the intercepting channel is formed by setting an adjusting pin, but the present invention is not limited thereto, and those skilled in the art can form the intercepting channel by other existing components or other existing forms as needed.

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

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

[0071] The inner shell part 138 is fixed to the inside of the outer shell part 131, and the inner ring inner chamber 144 and the outer ring inner chamber 146 are formed in the inner shell part 138, and the inner ring outer chamber 145 and the outer ring outer chamber 147 are formed in the outer shell part 131. In the inner shell part 138, the inner ring inner chamber 144 is adjacent to the outer ring inner chamber 146, the inner ring inner cavity is arranged inside the inner ring outer chamber 145, and the outer ring inner chamber 146 is arranged inside the outer ring outer cavity. In the outer shell part 131, the inner ring outer chamber 145 is adjacent to the outer ring outer chamber 147. 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 outer shell 131 is connected to the outer ring solenoid valve 162. A first straight hole 132 extending in a moving direction parallel to the outer ring solenoid valve 162 is formed in the wall surface of the outer shell 131. The first straight hole 132 extends from the open end 134 to the first shut-off hole 172. The straight hole port of the first straight hole 132 close to the open end 134 is closed by a sealing ring 136. The sealing ring 136 is clamped between the outer ring solenoid valve 162 and the straight hole port.

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

[0074] The bypass channel 149 is arranged between the second shut-off 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, and 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 figure shows the closed state of the outer ring solenoid valve 162 , in which 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 shut-off 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 toward the right side (opening end 134 side), so that the outer peripheral surface of the outer ring valve plug 1621 no longer abuts against the entrance of the bypass channel 149, the bypass channel 149 is opened, and the outer ring outer chamber 147 is connected to the inner ring diversion channel 148.

[0077] The inner ring inner chamber 144 and the outer ring inner chamber 146 are connected to the inner ring fire cover and the outer ring fire cover of the burner 190 through the inner ring gas outlet channel 142 and the outer ring gas outlet channel 143 respectively; the inner ring outer chamber 145 is connected to the stopcock 110 through the air inlet channel 141. The inner ring inner chamber 144 is connected to the outer ring outer chamber 147 through the connecting channel 151. The flow areas of the air inlet channel 141, the inner ring gas outlet channel 142, the outer ring gas outlet channel 143 and the connecting channel 151 are the same as or larger than the flow areas of the inner ring flow path and the outer ring flow path, so as to supply gas to the outer ring fire cover and the inner ring fire cover normally. The flow area of ​​the bypass channel 149 is also equal to or slightly smaller than the flow area of ​​the inner ring shut-off channel 148 excluding the shut-off holes, but is much larger than the flow area of ​​the first shut-off holes 172 and the second shut-off holes 182 in the inner ring shut-off channel 148, so as to achieve normal air supply to the inner ring shut-off channel 148 through the bypass channel 149.

[0078] In terms of hole distribution, the fire control valve 120 forms a first straight hole 132 in the outer shell 131. The first straight hole 132 is a part of the inner ring intercepting channel 148. Relative to the inner chamber, the inner ring intercepting channel 148 and the connecting channel 151 are arranged on both sides, respectively, to avoid mutual interference and multiple drilling or multiple holes in the same position, resulting in reduced strength.

[0079] like Figure 5 As shown, the stove 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 stopcock 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 may obtain a first detection result by detecting a 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°, 0-40° corresponds to only inner ring fire, 40°-140° corresponds to both inner and outer ring fire, and 140°-170° corresponds to only inner ring fire 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 turns 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 turns 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 , and the micro switch 114 is electrically connected to the control unit 201 .

[0083] like Figure 4 As shown, the micro switch 114 includes an inclined paddle 115, a trigger plate 112 is sleeved on the valve stem 111 of the stopcock 110, and a protrusion 113 extending a predetermined distance along the circumference of the trigger plate 112 is provided on the trigger plate 112, and 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 stopcock 110 from 0 to the maximum angle corresponds to the rotation from minimum fire to maximum fire and then to minimum fire.

[0085] Taking the maximum rotation angle of the plug valve 110 as 170°, 0-40° corresponding to only inner ring fire, 40°-140° corresponding to both inner and outer ring fire, and 140°-170° corresponding to only inner ring fire as an example, the predetermined distance of the protrusion 113 extending along the circumference of the trigger plate 112 corresponds to a coverage angle of 100°. When the plug valve 110 rotates to 0-40°, the paddle 115 is not pressed, and the control unit 201 controls the outer ring solenoid valve 162 to close in response to the micro switch 114. When the plug valve 110 rotates to 40°-140°, the paddle 115 is pressed by the protrusion 113, and the control unit 201 controls the outer ring solenoid valve 162 to open normally in response to the micro switch 114. When the plug valve 110 rotates to 140°-170°, the paddle 115 is not pressed, and the control unit 201 controls the outer ring solenoid valve 162 to close in response to the micro switch 114. The tail end of the protrusion 113 in the positive rotation direction (clockwise in the figure) smoothly transitions with the other parts of the trigger plate 112, so that the plug valve 110 can rotate smoothly when rotating (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 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 specified distance in the circumferential direction, and the protruding lengths of the first protrusion and the second protrusion are both set to be able to press the paddle 115.

[0087] This prescribed distance corresponds to the rotation angle range of the plug valve 110 for a high fire, and the extending length of the first protrusion and the second protrusion in the circumferential direction corresponds to the rotation angle range of the plug valve 110 for a low fire.

[0088] Taking the maximum rotation angle of the plug valve 110 as 170°, 0-40° corresponding to only inner ring fire, 40°-140° corresponding to both inner and outer ring fire, and 140°-170° corresponding to only inner ring fire as an example, the circumferential extension coverage angles of the first protrusion and the second protrusion are 40° and 30° respectively, and the circumferential extension coverage angle of the specified distance is 100°. When the plug valve 110 rotates to 0-40°, the first protrusion presses the paddle 115, and the control unit 201 controls the outer ring solenoid valve 162 to close in response to the micro switch 114. When the plug valve 110 rotates to 40°-140°, the paddle 115 is not pressed, and the control unit 201 controls the outer ring solenoid valve 162 to open in response to the micro switch 114. When the plug valve 110 rotates to 140°-170°, the second protrusion presses the paddle 115, and the control unit 201 controls the outer ring solenoid valve 162 to close in response to the micro switch 114. The tail ends of the first protrusion and the second protrusion in the positive rotation direction smoothly transition to other parts of the trigger plate 112, so that the plug valve 110 can rotate smoothly when rotating.

[0089] In other embodiments, the rotation detection unit 202 may also be an angle sensor, which may be a Hall effect angle sensor, a magnetoresistive effect angle sensor, or the like.

[0090] In other embodiments, the rotation detection unit 202 may also be an optical sensor. A positioning ring is sleeved on the valve stem 111 of the plug valve 110. The positioning ring is provided with multiple positioning points corresponding to different rotation angles. The optical sensor is used to identify the multiple positioning points.

[0091] The cooker 100 further includes an input unit 203 , which is electrically connected to the control unit 201 ; the input unit 203 is used to send a command signal 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 signal of the input unit 203 .

[0092] The input unit 203 sends out command signals according to the buttons or button modes corresponding to different cooking scenes. Different cooking scenes correspond to different buttons or button modes. The button modes include different pressing durations and pressing times, such as long pressing or short pressing twice in the soup-making scene. The control unit 201 controls the outer ring solenoid valve 162 and the inner ring solenoid valve 161 according to the command signal of the input unit 203 to adjust the firepower of the burner 190. Optionally, the plug valve 110 may also be provided with an electric control driver, which is used to drive the rotation of the plug valve 110. The control unit 201 may also control the electric control driver according to the command signal of the input unit 203 to adjust the opening of the gas flow channel of the plug valve 110, so as to more precisely control the firepower of the burner 190.

[0093] In another embodiment, if Figure 6 As shown, the stove 100 also includes a scene detection unit 204 instead of the input unit 203, and 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, and 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, and 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 cooker 100 is boiling, 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 boiling, and controls the outer ring solenoid valve 162 and the inner ring solenoid valve 161 to close, and directly adjusts the firepower to the minimum, or when the sound sensor detects the sound of boiling, 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 boiling, and performs corresponding control. Optionally, the plug valve 110 can also be provided with an electric control driver, which is used to drive the rotation of the plug valve 110. The control unit 201 can also control the electronically controlled driver according to the command signal of the input unit 203 to adjust the opening of the gas flow channel of the stopcock 110, thereby performing more precise control over the firepower of the burner 190.

[0095] In yet another embodiment, Figure 7 As shown, the stove 100 also 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 a command signal 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, the cooking mode corresponding to the second detection result is preferentially executed, and the opening and closing of the outer ring solenoid valve 162 and the inner ring solenoid valve 161 are controlled according to the cooking mode.

[0096] The cooker 100 includes both an input unit 203 and a scene detection unit 204, which can avoid manual operation errors. For example, when the cooking scene is a pot-frying, a person may press a wrong key in a panic, resulting in an operation error. The input unit 203 inputs a command signal corresponding to the cooking scene of stir-frying, but the scene detection unit 204 detects that the cooking scene is a pot-frying. At this time, the control unit 201 preferentially executes the cooking mode corresponding to the pot-frying - closing the outer ring solenoid valve 162 and the inner ring solenoid valve 161, and adjusting the fire of the burner 190 to the lowest. In this way, manual operation errors can be avoided to cause damage.

[0097] When the control unit 201 determines that the cooking mode corresponding to the instruction signal is the same as the cooking mode corresponding to the second detection result, it executes the cooking mode corresponding to the instruction 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 cooker 100 may also include an alarm device, which is electrically connected 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 detection result, the control unit 201 controls the alarm device to issue a prompt. Through the prompt of the alarm device, the operator can find out his own operating errors in time, so as to correct them in time and avoid more serious consequences. The alarm device can be an alarm light, an alarm sound, a display screen showing an alarm, etc.

[0099] In this embodiment, the scene detection unit 204 plays a correction role. The corresponding cooking mode is executed only when the cooking mode corresponding to the instruction signal is the same as the cooking mode corresponding to the second detection result, thereby avoiding misjudgment or premature operation and manual operation errors caused by direct detection by the scene detection unit 204. For example, the scene detection unit 204 directly determines that the stir-fry mode is based on the wok being on the stove, but in fact, the operator may be about to change the wok.

[0100] The following is the gas flow condition in the fire control valve 120 when the solenoid valve is opened and closed.

[0101] When the inner ring solenoid valve 161 and the outer ring solenoid valve 162 are both opened, 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 cut off, and the gas flows from the inner ring outer chamber 145 into the inner ring inner chamber 144 through the inner ring cut-off channel 148, and the gas flow rate depends on the opening size of the second cut-off hole 182; the outer ring flow path is closed.

[0103] When the inner ring solenoid valve 161 is opened but the outer ring solenoid valve 162 is closed, the inner ring flow path flows normally; and the outer ring flow path is closed.

[0104] When the inner ring solenoid valve 161 is closed but the outer ring solenoid valve 162 is opened, the inner ring flow path is cut off, and a part of the gas flows from the inner ring outer chamber 145 into the inner ring inner chamber 144 through the inner ring cut-off channel 148, and the other part of the gas flows from the inner ring outer chamber 145 into the inner ring inner chamber 144 through the inner ring cut-off channel 148, the bypass channel 149, the outer ring outer chamber 147 and the connecting channel 151 in sequence, and the gas flow rate depends on the opening size of the first cut-off hole 172; the outer ring flow path is also cut off, and the gas flows from the inner ring outer chamber 145 into the outer ring inner chamber 146 through the inner ring cut-off channel 148, the bypass channel 149 and the outer ring outer chamber 147 in sequence, and the gas flow rate depends on the opening size of the first cut-off hole 172.

[0105] When the stove 100 has not entered the fire adjustment mode, that is, at this time, when the fire power is controlled only according to the rotation of the stopcock 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 fire adjustment function of the general stove 100.

[0106] Taking the maximum rotation angle of the plug valve 110 as 170°, 0-40° corresponds to only inner ring fire, 40°-140° corresponds to both inner and outer ring fire, and 140°-170° corresponds to only inner ring fire 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 turns 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 turns 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 cooker 100 enters the fire adjustment mode, the cooker 100 has the following fire adjustment modes:

[0108] Mode 1: When the inner ring solenoid valve is open and the outer ring solenoid valve is open, the burner 190 has both inner ring fire and outer ring fire, and the firepower is adjusted as the plug valve 110 rotates.

[0109] Mode 2: When the inner ring solenoid valve is closed and the outer ring solenoid valve is closed, the outer ring fire of the burner 190 has no fire, and the inner ring fire remains at a low fire (at this time, only the inner ring interception channel 148 has gas passing through, and the gas flow rate depends on the opening size of the second interception hole 182, so that the inner ring fire remains at a low fire). Since the inner ring fire is already a low fire at this time, even if the plug valve 110 rotates, the adjustment of the firepower is very weak.

[0110] Mode 3: When the inner ring solenoid valve is opened and the outer ring solenoid valve is closed, the inner ring fire is adjusted as the plug valve 110 rotates, and the outer ring fire is without fire.

[0111] Mode 4: When the inner ring solenoid valve is closed and the outer ring solenoid valve is opened, the inner ring fire is kept at a low fire (at this time, only the inner ring interception channel 148 has gas passing through, and the gas flow rate depends on the opening size of the first interception hole 172, so that the inner ring fire is kept at a low fire), and the outer ring fire is kept at a low fire (at this time, the outer ring also supplies gas through the inner ring interception channel 148, and the gas flow rate depends on the opening size of the first interception hole 172). Since both the inner ring fire and the outer ring fire are already low fires at this time, even if the plug valve 110 rotates, the adjustment of the firepower is very weak.

[0112] Mode 1 is more advantageous for pan cooking, as the flame radius does not decrease as the firepower decreases, and the entire bottom surface of the pan is heated evenly.

[0113] Mode 2 allows for quick low heat, which is very useful for cooking scenarios such as boiling a pot. The operator can turn down the heat with one click, and it can also be used in cooking scenarios such as making soup.

[0114] Mode three is suitable for scenarios such as frying eggs in a small pan. For example, popular frying pans with a smaller radius and coffee pots on the market are suitable for heating in mode three.

[0115] Mode 4 is suitable for extreme low-fire temperature control and is suitable for low-fire cooking. It ensures the flame radius and provides a direct low-fire temperature control mode without relying on the rotation of the stopcock 110.

[0116] Modes 1 to 4 can also be freely combined and applied in cooking recipes, and modes 2, 3, and 4 can all achieve the purpose of reducing the firepower. For example, in the steaming mode, you can first use mode 1, switch to mode 2 or 3 after the water boils, and switch to mode 1 after the water temperature drops (add water).

[0117] The single-channel stopcock valve 110 of this embodiment is more suitable for adjusting the cooking mode than the double-channel stopcock valve 110. The single-channel stopcock valve 110 can more conveniently adjust the firepower when the inner ring fire is normal (the firepower is adjusted according to the rotation of the stopcock valve 110) and the outer ring fire is not in the state.

[0118] The fire control valve 120 of the present embodiment is provided with two adjusting pins in the inner ring intercepting channel 148. The flame size of the small fire in mode four depends on the first intercepting hole 172 of the first adjusting pin 171, and the flame size of the small fire in mode two depends on the second intercepting hole 182 of the second adjusting pin 181. Since in mode four, the inner ring intercepting channel 148 needs to supply gas to both the inner ring fire and the outer ring fire, the second intercepting hole 182 is set larger than the first intercepting hole 172 to meet the gas supply demand. The adjustment of the flame size in modes two and four can be achieved by adjusting the opening size of the first intercepting hole 172 and the second intercepting hole 182, that is, by replacing the first adjusting pin 171 and the second adjusting pin 181. By replacing the adjusting pins, the cooking scenes corresponding to modes two and four can be adjusted.

[0119] When the plug valve 110 is provided with an electric drive, multiple step modes can be added to modes 1 to 4 to correspond to more detailed cooking scenes. For example, frying a pancake can directly correspond to the state in which the plug valve 110 is turned to 20° in mode 1. In this way, you can enter the cooking scene of fixed food with one click, perform fool-proof operation, and avoid adjusting the heat by yourself, which may cause cooking failure. Modes 2 and 4 involve intercepting holes, and the amplitude of rotation adjustment of the plug valve 110 is extremely small, so they generally correspond to a single cooking scene respectively.

[0120] When the cooker 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 fire adjustment method, which is applied to the above-mentioned stove 100.

[0122] The fire adjustment method includes:

[0123] Determine whether to enter the fire adjustment mode.

[0124] If yes, the control unit 201 controls the outer ring solenoid valve 162, the inner ring 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 ring solenoid valve 162 and the inner ring solenoid valve 161 according to the first detection result.

[0126] Among them, when the command signal and the second detection result exist at the same time, if the command signal is inconsistent with the cooking mode corresponding to the second detection result, the control unit 201 controls the outer ring solenoid valve 162, the inner ring solenoid valve 161 and the electronic control driver according to the second detection result; if the command signal is consistent with the cooking mode corresponding to the second detection result, the control unit 201 controls the outer ring solenoid valve 162, the inner ring solenoid valve 161 and the electronic control driver according to the command signal.

[0127] In the description of the present invention, it is necessary to understand that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. indicate the orientation or positional relationship of the device or element in normal use, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation at any time, and therefore cannot be understood as a limitation of the present invention in this regard.

[0128] Although the specific embodiments of the present invention are described above, it should be understood by those skilled in the art that this is only for illustration and the protection scope of the present invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, but these changes and modifications all fall within the protection scope of the present invention.

Claims

1. A fire control valve, which is used to adjust the gas flow between the stopcock of a stove and the burner of the stove, characterized in that: The fire control valve comprises: 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 intercepting channel and a bypass channel; The inner chamber of the inner ring is connected to the outer chamber of the outer ring; The outer chamber of the inner ring 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 inner chamber and the outer ring inner chamber are respectively connected to the inner ring fire cover and the outer ring fire cover of the burner; The first port and the second port of the inner ring intercepting channel are respectively connected to the inner ring outer chamber and the inner ring inner chamber, and the inner ring intercepting channel is provided with a first intercepting hole and a second intercepting hole in sequence from the first port to the second port, and the opening size of the first intercepting hole is larger than the opening size of the second intercepting hole; The bypass channel is connected to the inner ring interception channel and the outer ring outer chamber; The bypass passage is opened and closed as the outer ring solenoid valve opens and closes the outer ring flow path.

2. The fire control valve according to claim 1, characterized in that The fire control valve also includes a first adjustment pin and a second adjustment pin; The first adjusting nail has a first intercepting hole, and the second adjusting nail has a second intercepting hole; The first adjusting pin and the second adjusting pin are arranged in the inner ring intercepting channel and are used to adjust the flow of the inner ring intercepting channel; The first intercepting hole is connected to the side wall and the end surface of the first adjusting nail respectively, and the second intercepting hole is connected to the side wall and the end surface of the second adjusting nail respectively; The shell is also provided with a first interception installation hole and a second interception installation hole which penetrate from the outer side of the shell to the inner ring interception channel, and the first adjustment nail and the second adjustment nail are respectively installed in the first interception installation hole and the second interception installation hole.

3. The fire control valve according to claim 1, characterized in that: The housing comprises an outer shell portion and an inner shell portion; The inner shell part is fixed to the inside of the outer shell part, an inner ring inner chamber and an outer ring inner chamber are formed in the inner shell part, and an inner ring outer chamber and an outer ring outer chamber are formed in the outer shell part.

4. The fire control valve according to claim 3, characterized in that An open end of the outer shell is connected to the outer ring solenoid valve, and a first straight hole extending in a moving direction parallel to the outer ring solenoid valve is formed in the wall surface of the outer shell, the first straight hole extends from the open end to the first intercepting hole, and the straight hole port of the first straight hole close to the open end is closed by a sealing ring, and the sealing ring is clamped between the outer ring solenoid valve and the straight hole port.

5. The fire control valve according to claim 4, characterized in that The bypass channel is arranged between the second shut-off 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, and 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 cooking appliance, characterized in that: The invention comprises a plug valve, a fire control valve as claimed in any one of claims 1 to 5, and a burner.

7. The cooker according to 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 fire control valve.

8. The cooker according to claim 7, characterized in that: The cooker 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 ring solenoid valve and the inner ring solenoid valve according to the rotation angle of the plug valve.

9. The cooker according to claim 8, characterized in that: The cooker further includes an input unit, which is electrically connected to the control unit; The input unit is used to send a command signal to the control unit, and the control unit also controls the opening and closing of the outer ring solenoid valve and the inner ring solenoid valve according to the command signal of the input unit.

10. The cooker according to claim 8, characterized in that: The cooker further includes a detection unit, which is electrically connected to the control unit; The 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 detection result of the detection unit.

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