Stove

Abstract

The utility model relates to the field of kitchen utensils, and particularly discloses a stove which comprises a plug valve, a rotary detection unit, a fire control valve and a burner, the plug valve comprises a rotatable valve rod and a gas channel, and the valve rod rotates to adjust the opening degree of the gas channel; the fire control valve comprises a shell and an outer ring electromagnetic valve; an air inlet channel, an inner ring air outlet channel and an outer ring air outlet channel are arranged in the shell; the outer ring electromagnetic valve is used for opening and closing an outer ring flow path between the air inlet channel and the outer ring outer cavity; the rotation detection unit is electrically connected to the outer ring solenoid valve, and the outer ring solenoid valve is opened and closed according to the detection result of the rotation detection unit. According to the plug valve of the kitchen range, the flow of fuel gas is adjusted only by adjusting the opening degree of the fuel gas channel, flow division of the fuel gas is achieved through the fire control valve, the longitudinal size of the plug valve is reduced, the overall longitudinal size of the kitchen range is reduced, and therefore the space utilization rate of the kitchen range is increased.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of kitchen utensils, in particular to a stove. BACKGROUND

[0002] In daily stoves, the gas plug valve is a valve body for manually adjusting and controlling gas on-off and adjusting gas size, usually including a valve body, a valve core, a valve rod, a micro switch and other additional devices such as a solenoid valve. The main working principle of the gas plug valve is: the gas enters through the inlet of the valve body, passes through the solenoid valve in turn, then enters the valve core, and finally communicates with the side opening of the outlet pipe through the side opening of the valve core, thereby realizing the supply of gas to the gas stove, which is a complex gas control process.

[0003] In the current common gas plug valve, the overall structure of the plug valve is relatively complex, contains many functional components and parts, and the cooperation relationship between the functional components is also relatively complicated and close. Because there are too many parts of the plug valve, and the conversion from one-way gas inlet to two-way gas outlet is required, the longitudinal space reserved for the plug valve region is large, thereby increasing the longitudinal space reserved for the overall stove, resulting in low internal space utilization of the stove. SUMMARY

[0004] The technical problem to be solved by the utility model is to overcome the defect of low space utilization rate in the internal space of the prior art stove, and to provide a stove with high space utilization rate.

[0005] The utility model solves the above technical problems by the following technical solutions:

[0006] A stove comprises a plug valve, a rotation detection unit, a fire control valve and a burner.

[0007] The plug valve comprises a rotatable valve rod and a gas passage, and the valve rod is rotated to adjust the opening degree of the gas passage.

[0008] The rotation detection unit is used for detecting the rotation angle of the valve rod.

[0009] The fire control valve comprises a housing and an outer ring solenoid valve.

[0010] The housing is provided with an inlet passage, an inner ring outlet passage and an outer ring outlet passage.

[0011] The outer ring solenoid valve is used for opening and closing the outer ring flow path between the inlet passage and the outer ring outlet passage.

[0012] The rotation detection unit is electrically connected to the outer ring solenoid valve, and the outer ring solenoid valve is opened and closed according to the detection result of the rotation detection unit.

[0013] In the scheme, the cock valve of the stove only adjusts the flow of gas by adjusting the opening degree of the gas passage, and the gas is branched by the fire control valve, which reduces the longitudinal volume of the cock valve and the overall longitudinal volume of the stove, thereby improving the space utilization of the stove.

[0014] Preferably, the fire control valve further comprises an inner ring electromagnetic valve for opening and closing an inner ring flow path between the air inlet passage and the inner ring air outlet passage, and the rotation detection unit is further electrically connected to the inner ring electromagnetic valve, which is opened and closed according to the detection result of the rotation detection unit.

[0015] In the scheme, the rotation detection unit is electrically connected to the inner ring electromagnetic valve, so that when the rotation angle is detected to be 0, the inner ring electromagnetic valve is closed, thereby ensuring the fire is off and improving the safety of the stove.

[0016] Preferably, the shell further comprises an outer chamber, an inner ring inner chamber and an outer ring inner chamber, the inner ring inner chamber and the outer ring inner chamber are arranged inside the outer chamber, the outer chamber is communicated with the air inlet passage, the inner ring inner chamber is communicated with the inner ring air outlet passage, and the outer ring inner chamber is communicated with the outer ring air outlet passage.

[0017] The inner ring electromagnetic valve is used for opening and closing an inner ring flow path between the outer chamber and the inner ring inner chamber, and the outer ring electromagnetic valve is used for opening and closing an outer ring flow path between the outer chamber and the outer ring inner chamber.

[0018] Preferably, the rotation detection unit comprises a micro switch, and the micro switch is electrically connected to the outer ring electromagnetic valve.

[0019] Preferably, the micro switch comprises an obliquely arranged toggle, and a trigger plate is sleeved on the valve rod of the cock valve, the trigger plate is provided with a first protruding part and a second protruding part extending along the circumference of the trigger plate by a predetermined distance, the first protruding part and the second protruding part are separated by a predetermined distance in the circumferential direction, and the protruding lengths of the first protruding part and the second protruding part are arranged to be able to press the toggle.

[0020] Preferably, the micro switch comprises an obliquely arranged toggle, and a trigger plate is sleeved on the valve rod of the cock valve, the trigger plate is provided with a first protruding part and a second protruding part extending along the circumference of the trigger plate by a predetermined distance, the first protruding part and the second protruding part are separated by a predetermined distance in the circumferential direction, and the protruding lengths of the first protruding part and the second protruding part are arranged to be able to press the toggle.

[0021] Preferably, the rotation detection unit comprises an angle sensor, and the angle sensor is electrically connected to the outer ring electromagnetic valve.

[0022] Preferably, the rotation detecting unit comprises an optical sensor, a positioning ring is sleeved on the valve rod of the plug valve, a plurality of positioning points corresponding to different rotation angles are arranged on the positioning ring, and the optical sensor is used for identifying the plurality of positioning points.

[0023] Preferably, the axes of the air inlet channel and the inner ring air outlet channel coincide.

[0024] Preferably, an outer ring inner cavity and an outer ring outer cavity are further arranged in the shell.

[0025] The outer ring electromagnetic valve is used for opening and closing an outer ring flow path between the outer ring inner cavity and the outer ring outer cavity.

[0026] The outer ring outer cavity is communicated with the air inlet channel, and the outer ring inner cavity is communicated with the outer ring air outlet channel.

[0027] Preferably, the axes of the inner ring air outlet channel, the outer ring air outlet channel and the air inlet channel are in the same plane.

[0028] In the scheme, the axes of the inner ring air outlet channel, the outer ring air outlet channel and the air inlet channel are in the same plane, so that the longitudinal volume of the fire control valve is minimized.

[0029] The positive progress effect of the utility model lies in that: the plug valve of the stove only adjusts the flow of gas by adjusting the opening of the gas channel, and realizes the flow distribution of gas through the fire control valve, reduces the longitudinal volume of the plug valve, reduces the overall longitudinal volume of the stove, and improves the space utilization rate of the stove. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 It is a three-dimensional structure schematic view of the stove according to the embodiment 1 of the utility model.

[0031] Figure 2 It is a three-dimensional structure schematic view of the fire control valve according to the embodiment 1 of the utility model.

[0032] Figure 3 It is a sectional structure schematic view of the fire control valve according to the embodiment 1 of the utility model.

[0033] Figure 4 It is a three-dimensional structure schematic view of the plug valve according to the embodiment 1 of the utility model.

[0034] Figure 5 It is a module schematic view of the stove according to the embodiment 1 of the utility model.

[0035] Figure 6 It is a three-dimensional structure schematic view of the fire control valve according to the embodiment 2 of the utility model.

[0036] Figure 7 FIG. 2 is a cross-sectional view of a fire control valve according to an embodiment of the present application.

[0037] BRIEF DESCRIPTION OF DRAWINGS

[0038] Embodiment 1

[0039] Stove 100

[0040] Plug valve 110

[0041] Valve stem 111

[0042] Trigger plate 112

[0043] Projection 113

[0044] Burner 120

[0045] Rotation detection unit 130

[0046] Micro switch 131

[0047] Dial 132

[0048] Fire control valve 140

[0049] Housing 141

[0050] Air inlet passage 1411

[0051] Inner ring air outlet passage 1412

[0052] Outer ring air outlet passage 1413

[0053] Outer chamber 1414

[0054] Inner ring inner chamber 1415

[0055] Outer ring inner chamber 1416

[0056] Inner ring solenoid valve 151

[0057] Outer ring solenoid valve 152

[0058] Control unit 160

[0059] Embodiment 2

[0060] Fire control valve 240

[0061] Housing 241

[0062] Air inlet passage 2411

[0063] Inner ring air outlet passage 2412

[0064] Outer ring air outlet passage 2413

[0065] 2414 outer ring solenoid valve

[0066] Outer ring inner chamber 2415

[0067] Outer ring outer chamber 2416 Detailed Implementation

[0068] The present invention will be further described below with reference to the accompanying drawings and by way of embodiments, but the present invention is not limited to the scope of the embodiments thereon.

[0069] Example 1

[0070] like Figures 1-5 As shown, this embodiment provides a stove 100, which includes: a stopcock valve 110, a rotation detection unit 130, a flame control valve 140, and a burner 120.

[0071] The plug valve 110 includes a rotatable valve stem 111 and a gas passage, the valve stem 111 being rotated to adjust the opening of the gas passage.

[0072] The rotation detection unit 130 is used to detect the rotation angle of the valve stem 111.

[0073] The fire control valve 140 includes a housing 141 and an outer ring solenoid valve 152.

[0074] The housing 141 is provided with an air inlet channel 1411, an inner ring air outlet channel 1412 and an outer ring air outlet channel 1413.

[0075] The outer ring solenoid valve 152 is used to open and close the outer ring flow path between the intake passage 1411 and the outer ring outer chamber 1414.

[0076] The rotation detection unit 130 is electrically connected to the outer ring solenoid valve 152, which opens and closes according to the detection result of the rotation detection unit 130.

[0077] The stopcock valve 110 of the stove 100 regulates the gas flow rate by adjusting the opening of the gas passage, and the gas is diverted through the flame control valve 140, which reduces the longitudinal volume of the stopcock valve 110 and reduces the overall longitudinal volume of the stove 100, thereby improving the space utilization of the stove 100.

[0078] The flame control valve 140 also includes an inner ring solenoid valve 151, which is used to open and close the inner ring flow path between the intake passage 1411 and the inner ring outlet passage 1412. The rotation detection unit 130 is also electrically connected to the inner ring solenoid valve 151, and the inner ring solenoid valve 151 opens and closes according to the detection result of the rotation detection unit 130.

[0079] The rotation detecting unit 130 is electrically connected to the inner ring electromagnetic valve 151, so that when the rotation angle is detected as 0, the inner ring electromagnetic valve 151 is closed, thereby ensuring the fire is off and improving the safety of the stove 100.

[0080] The housing 141 further comprises an outer chamber 1414, an inner ring inner chamber 1415 and an outer ring inner chamber 1416, the inner ring inner chamber 1415 and the outer ring inner chamber 1416 are arranged inside the outer chamber 1414, the outer chamber 1414 is communicated with the air inlet channel 1411, the inner ring inner chamber 1415 is communicated with the inner ring air outlet channel 1412, and the outer ring inner chamber 1416 is communicated with the outer ring air outlet channel 1413.

[0081] The inner ring electromagnetic valve 151 is used to open and close the inner ring flow path between the outer chamber 1414 and the inner ring inner chamber 1415, and the outer ring electromagnetic valve 152 is used to open and close the outer ring flow path between the outer chamber 1414 and the outer ring inner chamber 1416.

[0082] The axes of the inner ring air outlet channel 1412, the outer ring air outlet channel 1413 and the air inlet channel 1411 are in the same plane.

[0083] The axes of the inner ring air outlet channel 1412, the outer ring air outlet channel 1413 and the air inlet channel 1411 are in the same plane, thereby minimizing the longitudinal volume of the fire control valve 140.

[0084] The rotation detecting unit 130 comprises a micro switch 131, and the micro switch 131 is electrically connected to the outer ring electromagnetic valve 152.

[0085] As shown in Figure 4 The micro switch 131 comprises an inclined toggle 132, the valve stem 111 of the plug valve 110 is sleeved with a trigger plate 112, the trigger plate 112 is provided with a protruding portion 113 extending along the circumferential direction of the trigger plate 112 by a predetermined distance, and the protruding length of the protruding portion 113 is arranged to be able to press the toggle 132.

[0086] In this embodiment, the rotation of the plug valve 110 from 0 to the maximum angle corresponds to the rotation from the minimum fire to the maximum fire and then to the minimum fire.

[0087] With the maximum rotation angle of the cock valve being 170°, 0-40° corresponding to only inner ring fire, 40°-140° corresponding to having both inner and outer ring fire, and 140°-170° corresponding to only inner ring fire, for example, the predetermined distance along the circumferential direction of the trigger plate 112 corresponding to the protrusion 113 is 100°. When the cock valve 110 is rotated to 0-40°, the paddle 132 is not pressed, and the outer ring electromagnetic valve 152 is closed; when the cock valve 110 is rotated to 40°-140°, the paddle 132 is pressed by the protrusion 113, and the outer ring electromagnetic valve 152 is normally opened; and when the cock valve 110 is rotated to 140°-170°, the paddle 132 is not pressed, so that the outer ring electromagnetic valve 152 is closed. The tail end of the protrusion 113 in the forward rotation direction (clockwise in Figure 4 ) is smoothly transitioned with other parts of the trigger plate 112, so that the cock valve 110 can be smoothly rotated when it is rotated in the reverse direction (counterclockwise in Figure 4 ).

[0088] In other embodiments, the microswitch includes a paddle arranged obliquely, and a trigger plate is sleeved on the valve stem of the cock valve. The trigger plate can further be provided with a first protrusion and a second protrusion extending along the circumferential direction of the trigger plate by a predetermined distance. The first protrusion and the second protrusion are separated by a predetermined distance in the circumferential direction, and the protruding lengths of the first protrusion and the second protrusion are both arranged to be able to press the paddle.

[0089] The predetermined distance corresponds to the rotation angle range of the cock valve for large fire, and the extension lengths of the first protrusion and the second protrusion in the circumferential direction correspond to the rotation angle range of the cock valve for small fire.

[0090] With the maximum rotation angle of the cock valve being 170°, 0-40° corresponding to only inner ring fire, 40°-140° corresponding to having both inner and outer ring fire, and 140°-170° corresponding to only inner ring fire, for 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 predetermined distance is 100°. When the cock valve is rotated to 0-40°, the first protrusion presses the paddle, so that the outer ring electromagnetic valve is closed; when the cock valve is rotated to 40°-140°, the paddle is not pressed, and the outer ring electromagnetic valve is normally opened; and when the cock valve is rotated to 140°-170°, the second protrusion presses the paddle, so that the outer ring electromagnetic valve is closed. The tail ends of the first protrusion and the second protrusion in the forward rotation direction are smoothly transitioned with other parts of the trigger plate, so that the cock valve can be smoothly rotated when it is rotated.

[0091] In other embodiments, the rotation detection unit 130 can also be an angle sensor, which is electrically connected to the outer ring electromagnetic valve 152. The angle sensor can be a Hall effect angle sensor, a magnetoresistance effect angle sensor, etc.

[0092] In other embodiments, the rotation detection unit 130 can 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 a plurality of positioning points corresponding to different rotation angles, and the optical sensor is used to identify the plurality of positioning points. The optical sensor is electrically connected to the outer ring electromagnetic valve.

[0093] As shown in Figure 5 The stove 100 further includes a control unit 160, which is electrically connected to the rotation detection unit 130, the inner ring electromagnetic valve 151 and the outer ring electromagnetic valve 152 respectively, and the control unit 160 controls the opening and closing of the inner ring electromagnetic valve 151 and the outer ring electromagnetic valve 152 according to the detection result of the rotation detection unit 130.

[0094] If the rotation detection unit 130 is a micro switch 131, the stove 100 can not include the control unit 160, and only the micro switch 131 is used to control the on-off of the outer ring electromagnetic valve 152.

[0095] Embodiment 2

[0096] As shown in Figures 6-7 The stove provided by the embodiment includes: a plug valve, a rotation detection unit, a fire control valve 240, and a burner.

[0097] The plug valve includes a rotatable valve stem and a gas passage, and the valve stem is rotated to adjust the opening degree of the gas passage.

[0098] The rotation detection unit is used to detect the rotation angle of the valve stem.

[0099] The fire control valve 240 includes a housing 241 and an outer ring electromagnetic valve 2414.

[0100] The housing 241 is provided with an air inlet passage 2411, an inner ring air outlet passage 2412 and an outer ring air outlet passage 2413.

[0101] The outer ring electromagnetic valve 2414 is used to open and close the outer ring flow path between the air inlet passage 2411 and the outer ring outer chamber 2416.

[0102] The rotation detection unit is electrically connected to the outer ring electromagnetic valve 2414, and the outer ring electromagnetic valve 2414 is opened and closed according to the detection result of the rotation detection unit.

[0103] The plug valve of the stove only adjusts the flow of gas by adjusting the opening degree of the gas passage, and the gas is branched by the fire control valve 240, which reduces the longitudinal volume of the plug valve, reduces the overall longitudinal volume of the stove, and improves the space utilization rate of the stove.

[0104] The axes of the air inlet passage 2411 and the inner ring air outlet passage 2412 coincide.

[0105] The housing 241 is further provided with an outer ring inner chamber 2415 and an outer ring outer chamber 2416; the outer ring electromagnetic valve 2414 is used for opening and closing an outer ring flow path between the outer ring inner chamber 2415 and the outer ring outer chamber 2416; the outer ring outer chamber 2416 is communicated with the air inlet channel 2411, and the outer ring outer chamber 2416 is communicated with the outer ring air outlet channel 2413.

[0106] The axes of the inner ring air outlet channel 2412, the outer ring air outlet channel 2413 and the air inlet channel 2411 are in the same plane.

[0107] The axes of the inner ring air outlet channel 2412, the outer ring air outlet channel 2413 and the air inlet channel 2411 are in the same plane, thereby minimizing the longitudinal volume of the fire control valve 240.

[0108] The rotation detection unit includes a micro switch, and the micro switch is electrically connected to the outer ring electromagnetic valve 2414.

[0109] The micro switch includes a tilt arranged toggle, and the valve stem of the plug valve is sleeved with a trigger plate, the trigger plate is provided with a protruding part extending along the circumferential direction of the trigger plate by a predetermined distance, and the protruding length of the protruding part is arranged to be able to press the toggle.

[0110] In the embodiment, the rotation of the plug valve 110 from 0 to the maximum angle corresponds to the minimum fire to the maximum fire and then to the minimum fire.

[0111] Taking the maximum rotation angle of the plug valve as 170°, 0-40° corresponds to only the inner ring fire, 40°-140° corresponds to the inner ring fire and the outer ring fire, and 140°-170° corresponds to only the inner ring fire, for example, the predetermined distance of the protruding part extending along the circumferential direction of the trigger plate corresponds to the coverage angle of 100°. When the plug valve is rotated to 0-40°, the toggle is not pressed, and the outer ring electromagnetic valve 2414 is closed; when the plug valve is rotated to 40°-140°, the toggle is pressed by the protruding part, and the outer ring electromagnetic valve 2414 is normally opened; when the plug valve is rotated to 140°-170°, the toggle is not pressed, so that the outer ring electromagnetic valve 2414 is closed. The tail end of the protruding part in the clockwise direction in the forward rotation direction (counterclockwise direction in the embodiment) is smoothly transitioned with the other part of the trigger plate, so that the plug valve can be smoothly rotated when it is rotated (in the counterclockwise direction in the embodiment). Figure 4 Figure 4

[0112] ​​In other embodiments, the micro switch comprises a tiltably arranged toggle, and a trigger plate is sleeved on the valve rod of the cock valve, and the trigger plate can further be provided with a first protruding portion and a second protruding portion extending along the circumference of the trigger plate by a predetermined distance, the first protruding portion and the second protruding portion are separated by a predetermined distance in the circumferential direction, and the protruding lengths of the first protruding portion and the second protruding portion are both arranged to be capable of pressing the toggle.

[0113] The predetermined distance corresponds to the rotation angle range of the cock valve for large fire, and the extension lengths of the first protruding portion and the second protruding portion in the circumferential direction correspond to the rotation angle range of the cock valve for small fire.

[0114] Taking the maximum rotation angle of the cock valve as 170°, 0-40° corresponding to only inner ring fire, 40°-140° corresponding to having both inner and outer ring fires, and 140°-170° corresponding to only inner ring fire, the circumferential extension coverage angles of the first protruding portion and the second protruding portion are 40° and 30° respectively, and the circumferential extension coverage angle of the predetermined distance is 100°. When the cock valve is rotated to 0-40°, the first protruding portion presses the toggle, so that the outer ring electromagnetic valve 2414 is closed, when the cock valve is rotated to 40°-140°, the toggle is not pressed, and the outer ring electromagnetic valve 2414 is normally opened, and when the cock valve is rotated to 140°-170°, the second protruding portion presses the toggle, so that the outer ring electromagnetic valve 2414 is closed. The tail ends of the first protruding portion and the second protruding portion in the forward rotation direction are smoothly transitioned with other parts of the trigger plate, so that the cock valve can be smoothly rotated when it is rotated back.

[0115] In other embodiments, the rotation detection unit can also be an angle sensor, and the angle sensor is electrically connected to the outer ring electromagnetic valve 2414.

[0116] In other embodiments, the rotation detection unit can also be an optical sensor, and a positioning ring is sleeved on the valve rod of the cock valve, and the positioning ring is provided with a plurality of positioning points corresponding to different rotation angles, and the optical sensor is used to identify the plurality of positioning points.

[0117] The cooking appliance further comprises a control unit, and the control unit is electrically connected to the rotation detection unit and the outer ring electromagnetic valve 2414 respectively, and the control unit controls the opening and closing of the outer ring electromagnetic valve 2414 according to the detection result of the rotation detection unit.

[0118] If the rotation detection unit is a micro switch, the cooking appliance can not include a control unit, and only the micro switch is used to control the on-off of the outer ring electromagnetic valve 2414.

[0119] In the description of the utility model, need understanding is, the term "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and so on indicate the orientation or positional relationship is the orientation that the device or element is in normal use, just is for the convenience of describing the utility model and simplifying the description, and is not indicate or imply the device or element that is indicated must have a particular orientation at any time, with a particular orientation structure and operation, therefore can not be understood as the restriction of the utility model in this aspect.

[0120] Although the specific embodiments of the utility model are described above, those skilled in the art should understand that this is only illustrative, the protection scope of the utility model is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of the utility model, but these changes and modifications all fall within the protection scope of the utility model.

Claims

1. A hob, characterized in that It includes: A faucet valve, a rotation detection unit, a fire control valve, and a burner; The faucet valve includes a rotatable valve stem and a gas passage, and the valve stem is rotated to adjust the opening degree of the gas passage; The rotation detection unit is used to detect the rotation angle of the valve stem; The fire control valve includes a housing and an outer ring electromagnetic valve; The housing is provided with an air inlet passage, an inner ring air outlet passage and an outer ring air outlet passage; The outer ring electromagnetic valve is used to open and close the outer ring flow path between the air inlet passage and the outer ring air outlet passage; The rotation detection unit is electrically connected to the outer ring electromagnetic valve, and the outer ring electromagnetic valve is opened and closed according to the detection result of the rotation detection unit.

2. The hob as claimed in claim 1, characterized in that The fire control valve further includes an inner ring electromagnetic valve, which is used to open and close the inner ring flow path between the air inlet passage and the inner ring air outlet passage, and the rotation detection unit is also electrically connected to the inner ring electromagnetic valve, which is opened and closed according to the detection result of the rotation detection unit.

3. The hob as claimed in claim 2, characterized in that The housing is also provided with an outer chamber, an inner ring inner chamber and an outer ring inner chamber, the inner ring inner chamber and the outer ring inner chamber are arranged inside the outer chamber, the outer chamber is communicated with the air inlet passage, the inner ring inner chamber is communicated with the inner ring air outlet passage, and the outer ring inner chamber is communicated with the outer ring air outlet passage; The inner ring electromagnetic 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 electromagnetic valve is used to open and close the outer ring flow path between the outer chamber and the outer ring inner chamber.

4. The cooktop of claim 1, wherein The rotation detection unit includes a micro switch, and the micro switch is electrically connected to the outer ring electromagnetic valve.

5. The cooktop of claim 4, wherein The micro switch includes an inclined dial, and the valve stem of the faucet valve is sleeved with a trigger plate, the trigger plate is provided with a protruding part extending along the circumference of the trigger plate by a predetermined distance, and the protruding length of the protruding part is arranged to be able to press the dial.

6. The cooktop of claim 4, wherein The micro switch includes an inclined dial, and the valve stem of the faucet valve is sleeved with a trigger plate, the trigger plate is provided with a first protruding part and a second protruding part extending along the circumference of the trigger plate by a predetermined distance, the first protruding part and the second protruding part are separated by a predetermined distance in the circumference, and the protruding length of the first protruding part and the second protruding part is arranged to be able to press the dial.

7. The cooktop of claim 1, wherein The rotation detection unit includes an angle sensor, and the angle sensor is electrically connected to the outer ring electromagnetic valve.

8. The cooktop of claim 1, wherein The rotation detection unit includes an optical sensor, the valve stem of the faucet valve is sleeved with a positioning ring, the positioning ring is provided with a plurality of positioning points corresponding to different rotation angles, and the optical sensor is used to identify a plurality of the positioning points.

9. The cooktop of claim 1, wherein The axes of the air inlet passage and the inner ring air outlet passage coincide.

10. The cooktop of claim 9, wherein The housing is also provided with an outer ring inner chamber and an outer ring outer chamber; The outer ring electromagnetic valve is used to open and close the outer ring flow path between the outer ring inner chamber and the outer ring outer chamber; The outer ring outer chamber is communicated with the air inlet passage, and the outer ring inner chamber is communicated with the outer ring air outlet passage.

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