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 inner ring electromagnetic valve and an outer ring electromagnetic valve; an air inlet channel of the shell is communicated with the plug valve and the outer cavity; the inner-ring electromagnetic valve is used for opening and closing an inner-ring flow path, and the outer-ring electromagnetic valve is used for opening and closing an outer-ring flow path; the inner ring gas outlet channel and the outer ring gas outlet channel supply gas to an inner ring fire cover and an outer ring fire cover of the combustor correspondingly and communicate with an inner ring inner cavity and an outer ring inner cavity correspondingly. And a first port and a second port of the inner ring closure channel are respectively communicated with the inner cavity and the outer cavity of the inner ring. The fire control valve can replace an original plug valve to achieve the function of opening and closing outer ring fire, so that the structure of the plug valve can be simplified, the longitudinal size can be reduced, and meanwhile, the fire control valve can be used for opening and closing the inner ring flow path and the outer ring flow path through the inner ring electromagnetic valve and the outer ring electromagnetic valve and the inner ring closure channel. Various fire adjustment states corresponding to different cooking modes can be realized, so that fire adjustment of the cooker 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, which is used to adjust the gas flow between the plug valve of a stove and the burner of the stove, characterized in that the fire control valve comprises: a shell, an inner ring solenoid valve and an outer ring solenoid valve;

[0008] The shell is provided with an air inlet channel, an outer chamber, an inner ring inner chamber, an outer ring inner chamber, an outer ring air outlet channel, an inner ring air outlet channel, and an inner ring interception channel;

[0009] The air inlet passage is connected to the stopcock and the outer chamber;

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

[0011] The inner ring air outlet channel and the outer ring air outlet channel supply air to the inner ring fire cover and the outer ring fire cover of the burner respectively and are connected to the inner ring inner chamber and the outer ring inner chamber respectively;

[0012] The first port and the second port of the inner ring intercepting channel are respectively connected to the inner chamber of the inner ring and the outer chamber.

[0013] 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.

[0014] Preferably, the fire control valve further comprises an inner ring adjusting pin, wherein the inner ring adjusting pin is arranged in the inner ring intercepting channel and is used for adjusting the flow of the inner ring intercepting channel.

[0015] Preferably, an inner ring intercepting hole is provided in the inner ring adjusting nail, and the inner ring intercepting hole is respectively connected to the side wall and the end surface of the inner ring adjusting nail.

[0016] Preferably, the shell is further provided with an inner ring interception mounting hole penetrating from the outer side of the shell to the inner side of the shell, the inner ring adjustment nail is installed in the inner ring interception mounting hole, and the inner ring interception mounting hole penetrates the inner ring interception channel.

[0017] Preferably, the air inlet passage is arranged at a position in the shell corresponding to the inner chamber of the inner ring.

[0018] A stove comprises a plug valve, the above-mentioned fire control valve and a burner.

[0019] Preferably, the stopcock valve has a single gas flow channel, the opening of the gas flow channel is adjusted by rotating the stopcock valve, and the gas flow channel is connected to the air inlet channel of the fire control valve.

[0020] 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;

[0021] The rotation detection unit is used to detect the rotation angle of the plug valve;

[0022] 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.

[0023] Preferably, the rotation detection unit comprises a micro switch, and the micro switch is electrically connected to the control unit;

[0024] 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.

[0025] Preferably, the cooker further comprises an input unit, and the input unit is electrically connected to the control unit;

[0026] 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.

[0027] Preferably, the cooker further comprises a scene detection unit, and the scene detection unit is electrically connected to the control unit;

[0028] The scene detection unit is used to detect the current cooking scene, and the control unit controls the opening and closing of the outer ring solenoid valve and the inner ring solenoid valve according to the second detection result of the scene detection unit.

[0029] Preferably, the cooker further comprises an input unit and a scene detection unit, and both the input unit and the scene detection unit are connected to the control unit;

[0030] The input unit is used to send a command signal to the control unit, and the scene detection unit is used to detect the current cooking scene and send a second detection result to the control unit;

[0031] When the control unit determines that the cooking mode corresponding to the instruction signal is different from the cooking mode corresponding to the second detection result, it preferentially executes the cooking mode corresponding to the second detection result and controls the opening and closing of the outer ring solenoid valve and the inner ring solenoid valve according to the cooking mode.

[0032] Preferably, the cooker further comprises an electronically controlled driver, which is used to drive the valve stem of the stopcock to rotate, and 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.

[0033] Preferably, the cooker further comprises an alarm device, and the alarm device is electrically connected to the control unit;

[0034] 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 warning device to issue a prompt.

[0035] 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

[0036] Figure 1 FIG. 4 is a schematic diagram of the three-dimensional structure of a cooker according to an embodiment of the present invention.

[0037] Figure 2 Schematic diagram of the three-dimensional structure of a fire control valve according to an embodiment of the present invention.

[0038] Figure 3 Schematic diagram of the cross-sectional structure of a fire control valve according to an embodiment of the present invention.

[0039] Figure 4 It is a schematic diagram of the three-dimensional structure of a plug valve according to an embodiment of the present invention.

[0040] Figure 5 FIG. 1 is a module diagram of a control system of a cooker according to an embodiment of the present invention.

[0041] Figure 6 FIG. 4 is a schematic diagram of a module of a control system of a cooker according to another embodiment of the present invention.

[0042] Figure 7 FIG. 4 is a module schematic diagram of a control system of a cooker according to another embodiment of the present invention.

[0043] Description of reference numerals:

[0044] Cooker 100; stopcock 110; valve stem 111; trigger plate 112; protrusion 113; micro switch 114; paddle 115; fire control valve 120; housing 121; air inlet channel 1211; outer chamber 1212; inner ring inner chamber 1213; outer ring inner chamber 1214; inner ring air outlet channel 1215; outer ring air outlet channel 1216; inner ring interception channel 1217; inner ring solenoid valve 131; outer ring solenoid valve 132; inner ring adjusting pin 141; inner ring interception hole 142; inner ring interception mounting hole 143; burner 150; control unit 161; rotation detection unit 162; input unit 163; scene detection unit 164. DETAILED DESCRIPTION

[0045] 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.

[0046] like Figure 1-4 As shown, this embodiment provides a stove 100 , which includes a stopcock 110 , a flame control valve 120 and a burner 150 .

[0047] The plug valve 110 is used to adjust the flow of the gas by rotating itself.

[0048] 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 1211 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.

[0049] The flame control valve 120 is used to adjust the gas flow between the stopcock 110 of the stove 100 and the burner 150 of the stove 100 .

[0050] The fire control valve 120 includes: a housing 121, an inner ring solenoid valve 131 and an outer ring solenoid valve 132; the housing 121 is provided with an air inlet channel 1211, an outer chamber 1212, an inner ring inner chamber 1213, an outer ring inner chamber 1214, an outer ring air outlet channel 1216, an inner ring air outlet channel 1215, and an inner ring interception channel 1217; the air inlet channel 1211 is connected to the stopcock 110 and the outer chamber 1212; the inner ring solenoid valve 131 is used to open and close the outer chamber 1212 and the inner ring inner chamber 1214; The inner ring flow path between the chambers 1213, the outer ring solenoid valve 132 is used to open and close the outer ring flow path between the outer chamber 1212 and the outer ring inner chamber 1214; the inner ring air outlet channel 1215 and the outer ring air outlet channel 1216 respectively supply air to the inner ring fire cover and the outer ring fire cover of the burner 150 and are respectively connected to the inner ring inner chamber 1213 and the outer ring inner chamber 1214; the first port and the second port of the inner ring shut-off channel 1217 are respectively connected to the inner ring inner chamber 1213 and the outer chamber 1212.

[0051] The fire control valve 120 can replace the original stopcock valve 110 to realize the function of opening and closing the outer ring, 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 131 and the outer ring solenoid valve 132 and the setting of the inner ring interception channel 1217, making the fire adjustment of the stove 100 more intelligent.

[0052] The fire control valve 120 further includes an inner ring regulating pin 141 , which is disposed in the inner ring intercepting channel 1217 and is used to regulate the flow of the inner ring intercepting channel 1217 .

[0053] 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.

[0054] An inner ring intercepting hole 142 is provided in the inner ring regulating nail 141, and the inner ring intercepting hole 142 is connected to the side wall and the end surface of the inner ring regulating nail respectively. The regulating nail mainly realizes interception through the intercepting hole, and the cross-sectional area of ​​the intercepting hole is much smaller than the cross-sectional area of ​​normal fluid channels such as the air inlet channel 1211, the inner ring air outlet channel 1215, the outer ring air outlet channel 1216, and the inner ring intercepting channel 1217, and only a trace amount of fluid can flow through the intercepting hole.

[0055] The shell 121 is also provided with an inner ring interception mounting hole 143 which penetrates from the outer side of the shell 121 to the inner side of the shell 121 . The inner ring adjustment nail 141 is installed in the inner ring interception mounting hole 143 . The inner ring interception mounting hole 143 penetrates the inner ring interception channel 1217 .

[0056] A portion of the inner ring intercepting hole 142 penetrates the side wall of the inner ring adjusting nail 141, and the inner ring intercepting hole 142 forms a "T" shape in the inner ring adjusting nail 141, including a transverse penetration portion and a longitudinal penetration portion. The diameter of the inner ring adjusting nail 141 where the transverse penetration portion is located is smaller than the diameter of the inner ring intercepting mounting hole 143 where the inner ring adjusting nail 141 is located at the corresponding position, so that at this position, a gap is formed between the side of the inner ring adjusting nail 141 and the hole wall of the inner ring intercepting mounting hole 143, so that the fluid entering from the inner ring intercepting channel 1217 can pass through the gap and enter the inner ring intercepting hole 142 of the inner ring adjusting nail 141, so that the inner ring inner chamber 1213 and the outer chamber 1212 are connected, but only a trace amount of fluid is allowed to flow.

[0057] The air inlet passage 1211 is arranged in the housing 121 at a position corresponding to the inner ring inner chamber 1213. The existence time and probability of the flame of the inner ring fire cover are always greater than the flame of the outer ring fire cover. Therefore, the air inlet passage 1211 is arranged on a side close to the inner ring inner chamber 1213 to achieve faster air intake.

[0058] like Figure 5As shown, the stove 100 also includes a control unit 161 and a rotation detection unit 162. The control unit 161 is electrically connected to the rotation detection unit 162, the outer ring solenoid valve 132 and the inner ring solenoid valve 131; the rotation detection unit 162 is used to detect the rotation angle of the stopcock 110; the control unit 161 controls the opening and closing of the outer ring solenoid valve 132 and the inner ring solenoid valve 131 according to the first detection result of the rotation detection unit 162.

[0059] The rotation detection unit 162 may obtain a first detection result by detecting a rotation angle of the valve stem 111 of the plug valve 110 .

[0060] Taking the maximum rotation angle of the plug valve 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 161 controls the outer ring solenoid valve 132 to close, and the inner ring solenoid valve 131 to open; when the plug valve 110 turns to 40°-140°, the control unit 161 controls both the outer ring solenoid valve 132 and the inner ring solenoid valve 131 to open; when the plug valve 110 turns to 140°-170°, the control unit 161 controls the outer ring solenoid valve 132 to close, and the inner ring solenoid valve 131 to open.

[0061] The rotation detection unit 162 includes a micro switch 114 , and the micro switch 114 is electrically connected to the control unit 161 .

[0062] 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.

[0063] 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.

[0064] Taking the maximum rotation angle of the plug valve 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 161 controls the outer ring solenoid valve 132 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 161 controls the outer ring solenoid valve 132 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 161 controls the outer ring solenoid valve 132 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).

[0065] In other embodiments, the micro switch includes an inclined paddle, a trigger plate is sleeved on the valve stem of the stopcock, and a first protrusion and a second protrusion extending a predetermined distance along the circumference of the trigger plate may also be provided on the trigger plate, 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.

[0066] This prescribed distance corresponds to the rotation angle range of the cock for 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 cock for low fire.

[0067] Taking the maximum rotation angle of the plug valve 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, 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 rotates to 0-40°, the first protrusion presses the paddle, and the control unit responds to the micro switch to control the outer ring solenoid valve to close. When the plug valve turns to 40°-140°, the paddle is not pressed, and the control unit responds to the micro switch to control the outer ring solenoid valve to open. When the plug valve turns to 140°-170°, the second protrusion presses the paddle, and the control unit responds to the micro switch to control the outer ring solenoid valve to close. The tail ends of the first protrusion and the second protrusion in the positive rotation direction smoothly transition with the other parts of the trigger plate, so that the plug valve can rotate smoothly when it rotates.

[0068] In other embodiments, the rotation detection unit 162 may also be an angle sensor, which may be a Hall effect angle sensor, a magnetoresistive effect angle sensor, or the like.

[0069] In other embodiments, the rotation detection unit 162 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.

[0070] like Figure 5 As shown, the stove 100 also includes an input unit 163, which is electrically connected to the control unit 161; the input unit 163 is used to send a command signal to the control unit 161, and the control unit 161 also controls the opening and closing of the outer ring solenoid valve 132 and the inner ring solenoid valve 131 according to the command signal of the input unit 163.

[0071] The input unit 163 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, etc. The control unit 161 controls the outer ring solenoid valve 132 and the inner ring solenoid valve 131 according to the command signal of the input unit 163 to adjust the firepower of the burner 150. 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 161 may also control the electric control driver according to the command signal of the input unit 163 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 150.

[0072] In another embodiment, if Figure 6 As shown, the stove 100 also includes a scene detection unit 164 instead of the input unit 163, and the scene detection unit 164 is electrically connected to the control unit 161; the scene detection unit 164 is used to detect the current cooking scene, and the control unit 161 controls the opening and closing of the outer ring solenoid valve 132 and the inner ring solenoid valve 131 according to the second detection result of the scene detection unit 164.

[0073] The scene detection unit 164 is used to detect the current cooking scene, and the control unit 161 controls the opening and closing of the outer ring solenoid valve 132 and the inner ring solenoid valve 131 according to the second detection result of the scene detection unit 164 to adjust the firepower of the burner 150. The scene detection unit 164 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 161, the control unit 161 recognizes the image and determines that the cooking scene is boiling, and controls the outer ring solenoid valve 132 and the inner ring solenoid valve 131 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 161, the control unit 161 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 161 can also control the electronically controlled driver according to the command signal of the input unit 163 to adjust the opening of the gas flow channel of the stopcock 110, thereby more precisely controlling the firepower of the burner 150.

[0074] In yet another embodiment, Figure 7 As shown, the stove 100 also includes an input unit 163 and a scene detection unit 164, both of which are connected to the control unit 161; the input unit 163 is used to send a command signal to the control unit 161, and the scene detection unit 164 is used to detect the current cooking scene and send a second detection result to the control unit 161; when the control unit 161 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 132 and the inner ring solenoid valve 131 are controlled according to the cooking mode.

[0075] The cooker 100 includes both an input unit 163 and a scene detection unit 164, 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 163 inputs a command signal corresponding to the cooking scene of stir-frying, but the scene detection unit 164 detects that the cooking scene is a pot-frying. At this time, the control unit 161 preferentially executes the cooking mode corresponding to the pot-frying, that is, closes the outer ring solenoid valve 132 and the inner ring solenoid valve 131, and adjusts the firepower of the burner 150 to the lowest. In this way, manual operation errors can be avoided to cause damage.

[0076] When the control unit 161 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 132 and the inner ring solenoid valve 131 according to the cooking mode.

[0077] The cooker 100 may also include an alarm device, which is electrically connected to the control unit 161; when the control unit 161 determines that the cooking mode corresponding to the command signal is different from the cooking mode corresponding to the detection result, the control unit 161 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 to avoid more serious consequences. The alarm device can be an alarm light, an alarm sound, a display screen showing an alarm, etc.

[0078] In this embodiment, the scene detection unit 164 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 164. For example, the scene detection unit 164 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.

[0079] The following is the gas flow condition in the fire control valve 120 when the solenoid valve is opened and closed.

[0080] When the inner ring solenoid valve 131 is opened and the outer ring solenoid valve 132 is opened, the inner ring flow path flows normally and the outer ring flow path flows normally.

[0081] When the inner ring solenoid valve 131 is closed and the outer ring solenoid valve 132 is closed, the inner ring flow path is cut off, and the gas enters the inner ring inner chamber from the outer chamber through the inner ring cut-off channel; the outer ring flow path is closed.

[0082] When the inner ring solenoid valve 131 is opened and the outer ring solenoid valve 132 is closed, the inner ring flow path flows normally; and the outer ring flow path is closed.

[0083] When the inner ring solenoid valve 131 is closed and the outer ring solenoid valve 132 is opened, the inner ring flow path is cut off, and the gas enters the inner ring inner chamber from the outer chamber through the inner ring cut-off channel; the outer ring flow path flows normally.

[0084] 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 161 controls the outer ring solenoid valve 132 and the inner ring solenoid valve 131 according to the first detection result of the rotation detection unit 162, thereby realizing the fire adjustment function of the general stove 100.

[0085] Taking the maximum rotation angle of the plug valve 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 161 controls the outer ring solenoid valve 132 to close, and the inner ring solenoid valve 131 to open; when the plug valve 110 turns to 40°-140°, the control unit 161 controls both the outer ring solenoid valve 132 and the inner ring solenoid valve 131 to open; when the plug valve 110 turns to 140°-170°, the control unit 161 controls the outer ring solenoid valve 132 to close, and the inner ring solenoid valve 131 to open.

[0086] When the cooker 100 enters the fire adjustment mode, the cooker 100 has the following fire adjustment modes:

[0087] Mode 1: When the inner ring solenoid valve is open and the outer ring solenoid valve is open, the burner 150 has both inner ring fire and outer ring fire, and the firepower is adjusted as the plug valve 110 rotates.

[0088] 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 150 has no fire, and the inner ring fire remains at a low fire (at this time, only the inner ring interception channel 1217 has gas passing through, 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.

[0089] 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.

[0090] 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 flame (at this time, only the inner ring interception channel 1217 has gas passing through, so that the inner ring fire is kept at a low flame), and the firepower of the outer ring fire is adjusted with the rotation of the plug valve 110.

[0091] 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.

[0092] 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.

[0093] 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.

[0094] Mode 4 reduces the interference of the inner ring fire on the anti-dry burning temperature sensor, and is suitable for cooking scenarios such as low-temperature frying (even low heat) or stewing soup (extremely low heat).

[0095] 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).

[0096] Compared with the double-channel stopcock, the single-channel stopcock of this embodiment is more suitable for adjusting the cooking mode. The single-channel stopcock can more conveniently adjust the firepower when the inner ring fire is normal (the firepower is adjusted according to the rotation of the stopcock) and the outer ring fire is not in the state.

[0097] When the stopcock 110 is provided with an electric driver, multiple step modes can be added in modes one to four to correspond to more detailed cooking scenes. For example, frying a pancake can directly correspond to the state in which the stopcock 110 is turned to 20° in mode one. In this way, you can enter the cooking scene of fixed food with one click and perform the operation, avoiding adjusting the fire by yourself and causing cooking failure.

[0098] When the cooker 100 enters the flame adjustment mode, that is, after the input unit 163 or the scene detection unit 164 is triggered, the control unit 161 no longer controls the outer ring solenoid valve 132 and the inner ring solenoid valve 131 according to the first detection result of the rotation detection unit 162 .

[0099] This embodiment also provides a fire adjustment method, which is applied to the above-mentioned stove 100.

[0100] The fire adjustment method includes:

[0101] Determine whether to enter the fire adjustment mode.

[0102] If yes, the control unit 161 controls the outer ring solenoid valve 132, the inner ring solenoid valve 131 and the electronically controlled driver according to the command signal or the second detection result.

[0103] If not, the control unit 161 controls the outer ring solenoid valve 132 and the inner ring solenoid valve 131 according to the first detection result.

[0104] 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 161 controls the outer ring solenoid valve 132, the inner ring solenoid valve 131 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 161 controls the outer ring solenoid valve 132, the inner ring solenoid valve 131 and the electronic control driver according to the command signal.

[0105] In the description of the present invention, it should be understood that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0106] 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 inner ring solenoid valve and an outer ring solenoid valve; The shell is provided with an air inlet channel, an outer chamber, an inner ring inner chamber, an outer ring inner chamber, an outer ring air outlet channel, an inner ring air outlet channel, and an inner ring interception channel; The air inlet passage is connected to the stopcock and the outer chamber; The inner ring solenoid valve is used to open and close the inner ring flow path between the 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 chamber and the outer ring inner chamber; The inner ring air outlet channel and the outer ring air outlet channel supply air to the inner ring fire cover and the outer ring fire cover of the burner respectively and are connected to the inner ring inner chamber and the outer ring inner chamber respectively; The first port and the second port of the inner ring intercepting channel are respectively connected to the inner chamber of the inner ring and the outer chamber.

2. The fire control valve according to claim 1, characterized in that: The fire control valve further comprises an inner ring regulating pin, which is arranged in the inner ring intercepting channel and is used to regulate the flow of the inner ring intercepting channel; An inner ring intercepting hole is provided in the inner ring adjusting nail, and the inner ring intercepting hole is connected to the side wall and the end surface of the inner ring adjusting nail respectively; The shell is also provided with an inner ring interception mounting hole which passes through from the outer side of the shell to the inner side of the shell, the inner ring adjustment nail is installed in the inner ring interception mounting hole, and the inner ring interception mounting hole passes through the inner ring interception channel.

3. The fire control valve according to claim 1, characterized in that: The air inlet passage is arranged in the housing at a position corresponding to the inner chamber of the inner ring.

4. A cooking appliance, characterized in that: The utility model comprises a plug valve, a fire control valve as claimed in any one of claims 1 to 3, and a burner.

5. The cooker according to claim 4, characterized in that: The plug valve has a single gas flow passage, the opening of which is adjusted by rotating the plug valve, and the gas flow passage is connected to the air inlet passage of the fire control valve.

6. The cooker according to claim 5, characterized in that: 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; The rotation detection unit is used to detect the rotation angle of the plug valve; The control unit controls the opening and closing of the outer ring solenoid valve and the inner ring solenoid valve according to the first detection result of the rotation detection unit.

7. The cooker according to claim 6, characterized in that: The cooker further comprises an input unit, wherein the input unit 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.

8. The cooker according to claim 6, characterized in that: The cooker further comprises a scene detection unit, wherein the scene detection unit is electrically connected to the control unit; The scene detection unit is used to detect the current cooking scene, and the control unit controls the opening and closing of the outer ring solenoid valve and the inner ring solenoid valve according to the second detection result of the detection unit.

9. The cooker according to claim 6, characterized in that: The rotation detection unit includes a micro switch, and the micro switch is electrically connected to the control unit; 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.

10. The cooker according to claim 7 or 8, characterized in that: The cooker further includes 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.

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