CN113394043A

CN113394043A - Gas appliance knob capable of being electrically controlled and manually controlled to rotate

Info

Publication number: CN113394043A
Application number: CN202010175650.5A
Authority: CN
Inventors: 黄羽婵
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-03-13
Filing date: 2020-03-13
Publication date: 2021-09-14

Abstract

The invention relates to a gas appliance knob capable of being electrically controlled and manually controlled to rotate, which comprises a rotating cover capable of being combined with a rotating shaft of a gas valve, a positioning disc erected in the rotating cover, a circuit board arranged on the positioning disc and a driving unit, wherein the positioning disc extends downwards to form an insertion part capable of being inserted and positioned on a fixed seat so as to limit the radial displacement of the positioning disc, the circuit board and the driving unit through the fixed seat, and the fixed seat is provided with a connector which is electrically connected with the insertion part of the knob to supply power, so that the rotating cover can be rotated relative to the positioning disc by external force applied by a user, or the driving unit drives the rotating cover to automatically rotate relative to the positioning disc through the connector and the insertion part, and thus, the knob has the advantages of manual control operation mode and automatic electric control rotation of the traditional gas appliance knob.

Description

Gas appliance knob capable of being electrically controlled and manually controlled to rotate

Technical Field

The invention relates to a knob related to controlling the on-off of a gas appliance and adjusting big and small fire, which aims to design the center of the knob into a structure which does not rotate along with the knob, and is provided with a driving unit which is electrically connected with the gas appliance through a connector which can be conveniently disassembled and assembled, so that the knob can be driven by the driving unit to automatically rotate or directly rotate by a manual knob.

Background

For example, in the conventional gas cooker such as gas stove, the fire size is adjusted by manually controlling the mechanical knob, while in the more advanced planar cooker, the adjustment is performed by using the touch button, for example: the induction switch or the membrane switch is arranged on the control panel of the stove, and two opposite triangles represent increasing or decreasing of the stove fire, or the functions of displaying timing time by using a nixie tube, displaying the fire intensity by emitting light and the like are performed.

For older consumers, the fire is controlled by rotating the knob directly in operation, the hand feeling is better, but the function is simple; on the contrary, the planar control panel has complete functions and is convenient to use, but the operation is different from the traditional mode, especially when the firepower is adjusted, the operation can be performed after various functional buttons are repeatedly confirmed, and the operation hand feeling is not as good as that of a manual knob. Therefore, in order to take account of older users, the inventor has created taiwan M560568 and CN207623831U composite stove knobs, and achieved digitalized function by using the traditional knob.

The knob of taiwan M560568 structurally comprises a base fixed on a stove, a knob located above the base and sleeved with a gas valve rotating shaft, a positioning seat erected in the center of the knob, and an electric control unit fixed on the positioning seat, wherein the positioning seat and the electric control unit cannot rotate along with the knob, and the knob is enabled to achieve the functions of setting combustion time and firepower, setting external range hood to start air draft and air volume regularly and the like through the electric control unit.

However, after the knob is actually used, it is found that the power supply and the signal wire of the electric control unit of the knob penetrate through the lower part of the knob and then are electrically connected with the power supply of the stove through the central through hole of the base, so that when the knob is rotated, the electric control unit in the knob can move together, the power supply and the signal wire at the bottom are easily extruded, and when the knob is pulled out from the rotating shaft of the gas valve in need of maintenance, the power supply and the signal wire are pulled along with the movement of the electric control unit, thereby causing the problem of difficult maintenance.

Moreover, when a small number of users cook food, the users forget to turn off the stove fire, which further causes fire hazard. Therefore, how to enjoy a device with digital and safe use measures without changing the use habit of the conventional knob is the research and development direction of the present invention.

Disclosure of Invention

The invention aims to provide a gas appliance knob capable of being electrically controlled and manually rotated, wherein a positioning disc and a circuit board which do not deflect along with the knob are mainly arranged above the center of the knob, and the knob is electrically connected with a gas appliance through a connector which can be conveniently disassembled and assembled, so that the knob can be driven to rotate by a driving unit or directly rotated by the manual knob, the use habit of the traditional knob is maintained, and the knob can be driven to automatically close a valve through the driving unit.

To achieve the above object, the present invention provides a knob of a gas appliance capable of being electrically and manually rotated, the gas appliance having a gas valve shaft for controlling a gas switch and a flow rate, the knob being mounted on the gas valve shaft to synchronously drive the gas valve shaft to rotate, the knob comprising:

the side edge of a rotating shaft of a gas valve of the gas appliance is provided with a fixed seat which is electrically connected with an electric control system of the gas appliance; the knob comprises a rotary cover combined with the rotating shaft of the gas valve and a positioning disc erected in the rotary cover, a circuit board and a driving unit are arranged on the positioning disc, an inserting part extends downwards from the positioning disc, and the inserting part can be inserted and positioned on the fixed seat to limit the radial displacement of the positioning disc; and

the plug part is provided with a plug terminal group electrically connected with the circuit board, the fixed seat is relatively provided with a connector electrically connected with the plug terminal group, so that the rotary cover can rotate relative to the positioning disc and the fixed seat by external force application, or the connector, the plug terminal group and the circuit board are connected with a power supply, so that the drive unit drives the rotary cover and the gas valve rotating shaft to rotate relative to the positioning disc.

By means of the structure, the knob achieves the function of being electrically connected with the gas appliance electric control system through the plug-in terminal group and the connector which are easy to disassemble and assemble, the knob can have the functions of electric control and manual control, and can be rapidly disassembled and assembled from the gas valve rotating shaft during installation or maintenance, so that the operation of constructors is facilitated.

Specific embodiments of the various elements are further described below:

when the gas valve is operated, the center in the rotary cover is provided with a shaft sleeve sleeved on a rotating shaft of the gas valve, the shaft sleeve is provided with a driven gear which rotates synchronously, and the driving unit comprises a motor with an output rotating shaft, a transmission gear set linked with the output rotating shaft and at least one clutch gear movably arranged between the transmission gear set and the driven gear;

the clutch gear is meshed with the transmission gear set and connected to an elastic element, the elastic element provides elastic force to enable the clutch gear to be far away from the driven gear, when the rotary cover enables the shaft sleeve and the driven gear to rotate synchronously through external manual force application, the clutch gear and the transmission gear set do not rotate, and when the motor drives the output rotating shaft to rotate, the clutch gear can be driven by the transmission gear set to move towards the driven gear to be meshed, so that the shaft sleeve, the gas valve rotating shaft and the rotary cover are driven to rotate synchronously, and the rotary cover can rotate in an electric control mode through the driving of the motor.

When the driving unit is used, the motor of the driving unit can drive the output rotating shaft to rotate forwards or backwards, the driving unit is provided with two clutch gears which are respectively connected with different elastic elements, the two elastic elements respectively provide elastic force to enable the two clutch gears to be respectively far away from the driven gear, when the driven gear of the rotating cover rotates, the clutch gear and the transmission gear set do not rotate along with the rotation, and when the motor drives the output rotating shaft to rotate forwards or backwards, the driving gear set can respectively drive one of the clutch gears in the corresponding direction to move and then be meshed with the driven gear, so that the shaft sleeve, the gas valve rotating shaft and the rotating cover are driven to synchronously rotate forwards or backwards.

When the rotating cover is used, the top of the rotating cover is provided with a light-permeable operation panel, one or more operation interfaces for a user to operate are arranged below the circuit board relative to the operation panel, and the digital display is arranged, and light rays emitted by the digital display can penetrate through the operation panel to be displayed.

When the gas valve rotating shaft is pressed down by the rotating cover under the action of external force, the positioning disc, the circuit board, the driving unit and the plugging part can simultaneously move downwards, and the plugging terminal group on the plugging part is electrically connected with the connector.

When the gas appliance electric control system is implemented, the fixing seat and the connector are arranged outside a shell of a position detector of the gas appliance electric control system, a sleeve which is arranged at the periphery of a gas valve rotating shaft and can deflect in a linkage manner with the gas valve rotating shaft is arranged inside the shell of the position detector, an annular magnet which deflects synchronously is arranged on the sleeve, at least one magnetic induction element is arranged on the outer side of the shell corresponding to the annular magnet, and the magnetic induction element can sense the deflection angle of the annular magnet and output a position signal to be transmitted to the gas appliance electric control system or transmitted to the circuit board through the connector of the fixing seat and a plug-in terminal group of the knob.

When the annular magnet is implemented, the annular magnet is provided with a first magnetic pole and a second magnetic pole which are arranged in an equally divided 360-degree mode, the inner sides of the annular magnet corresponding to the first magnetic pole and the second magnetic pole are further respectively provided with a first magnet and a second magnet which are symmetrically arranged at an interval of 180-280 degrees, the first magnet is close to one side of the first magnetic pole, the magnetism of the first magnet is the same as that of the first magnetic pole, and the second magnet is close to one side of the second magnetic pole, the magnetism of the second magnet is the same as that of the second magnetic pole.

When the gas valve rotating shaft and the lining are rotated to the valve closing or outer ring fire closing position along with the gas valve rotating shaft and the lining, the micro switch can be respectively triggered to detect the state of the gas appliance in the valve closing or outer ring fire closing state.

When the gas appliance electric control system is implemented, the gas appliance electric control system further comprises a wireless transmission interface, and the wireless transmission interface can receive an external instruction, so that the gas appliance electric control system can transmit a control signal and transmit the control signal to the circuit board and the driving unit through the connector of the fixed seat and the plug-in terminal group of the knob, and the remote end controls the driving unit to drive the rotating angle of the rotating cover or close the valve.

When the gas appliance is implemented, the gas appliance is provided with a panel, a through hole is formed in the panel corresponding to the periphery of the gas valve rotating shaft, a waterproof sleeve ring clamped in the through hole is arranged in a gap between the inner periphery of the through hole and the periphery of the gas valve rotating shaft, and the inserting parts of the fixed seat and the knob are located on the inner periphery of the waterproof sleeve ring.

Compared with the prior art, the invention has the following advantages

1. The knob achieves the function of being electrically connected with the gas appliance electric control system through the plug-in terminal group and the connector which are easy to disassemble and assemble, so that the knob can be rapidly disassembled and assembled from the gas valve rotating shaft during installation or maintenance, and convenience is brought to the operation of constructors.

2. The knob has the advantage of being directly rotated by manual control, and can be automatically rotated by receiving the driving of a driving unit or remotely controlled to rotate by receiving an external instruction, thereby achieving the functions of automatically adjusting the rotating shaft of the gas valve and automatically closing the valve.

3. The position detector of the gas appliance comprises an annular magnet, a first magnetic pole and a second magnetic pole, wherein the first magnetic pole and the second magnetic pole are arranged on the inner periphery of the annular magnet, and the first magnetic pole and the second magnetic pole can effectively extend the magnetic field angle of the annular magnet, so that the rotation angles of the position detector detection knob and the gas valve rotating shaft are enlarged.

The following description will be made in conjunction with the drawings, exemplifying embodiments suitable for the present invention.

Drawings

Fig. 1 is an exploded perspective view of a knob and a gas valve spindle according to the present invention.

Fig. 2 is an exploded view of the knob and gas valve spindle of the present invention.

FIG. 3 is a schematic view showing the structure of the knob provided on the rotating shaft of the gas valve in the present invention.

Fig. 4 is a schematic view of the structure of the push knob of the present invention.

FIG. 5 is a schematic view of the driving unit driving the knob to rotate according to the present invention.

Fig. 6 is a schematic view showing the rotation of the manual operation knob in the present invention.

Fig. 7 is a schematic view of the rotation of a manual operation knob of another embodiment of the driving unit of the present invention.

Fig. 8 is a schematic view of the forward driving rotation of the drive unit in an electrically controlled manner in accordance with the present invention.

Fig. 9 is a schematic view of the drive unit of the present invention being electrically controlled to back drive rotation.

Fig. 10 is a schematic structural view of the circuit board of the present invention.

Figure 11 is an exploded perspective view of the position detector of the present invention.

FIG. 12 is a schematic view of the gas valve spool and bushing in the closed position of the present invention.

FIG. 13 is a schematic view of the gas valve shaft and bushing of the present invention in a hot position.

FIG. 14 is a schematic view of the gas valve shaft and sleeve in the closed outer ring fire position of the present invention.

FIG. 15 is a schematic view of the gas valve shaft and bushing of the present invention in the low fire position.

Description of reference numerals: 100, a gas appliance; 101 a panel; 102, punching; 103 gas valve rotating shaft; 104 a wireless transmission interface; 200 knobs; 10, fixing a base; 11 a connector; 20 rotating the cover; 21 a shaft sleeve; 22 a driven gear; 23 an operation panel; 30, positioning a disc; 31 a plug-in part; 32 plug-in terminal sets; 40 circuit boards; 41 a digital display; 42 an operation interface; 50 a drive unit; 51 an output shaft; 52 a motor; 53 drive gear sets; 54 clutch gear; 55 an elastic element; 60 a waterproof collar; 70 a position detector; 71 a housing; 72 a bushing; 73 grooves or bumps; 74 a micro-switch; 80 a ring magnet; a first magnetic pole of N; s a second magnetic pole; 81 a first magnet; 82 a second magnet; 90 magnetic induction element.

Detailed Description

As shown in fig. 1 to 4, the present invention is a gas appliance knob capable of being electrically and manually rotated, the gas appliance 100 has a panel 101, the panel 101 is provided with a through hole 102, the through hole 102 is provided with a gas valve rotating shaft 103 for controlling gas switch and flow rate, and the knob 200 is mounted and combined on the gas valve rotating shaft 103 to synchronously drive the gas valve rotating shaft 103 to rotate.

The gas valve shaft 103 of the gas appliance 100 is provided at a side thereof with a fixing base 10 electrically connected to an electric control system (not shown) of the gas appliance 100. The knob 200 includes a rotating cover 20 combined with the gas valve rotating shaft 103, and a positioning plate 30 mounted inside the rotating cover 20, the positioning plate 30 is provided with a circuit board 40, and a driving unit 50 capable of receiving power provided by the circuit board 40 to drive the rotating cover 20 to rotate, wherein the positioning plate 30 extends a plugging portion 31 downward, the plugging portion 31 can be plugged and positioned on the fixing base 10 to limit radial displacement of the positioning plate 30, so that when the rotating cover 20 rotates, the positioning plate 30, the circuit board 40 and the driving unit 50 are kept at fixed positions and cannot rotate along with the rotating cover 20.

The inserting portion 31 is provided with an inserting terminal set 32 electrically connected to the circuit board 40, the fixing base 10 is provided with a connector 11, when the inserting portion 31 is inserted and positioned on the fixing base 10, the inserting terminal set 32 can be electrically connected to the connector 11, so that a power supply and a control signal transmitted by an electric control system (not shown) of the gas appliance 100 can be transmitted to the circuit board 40 through the connector 11 and the inserting terminal set 32, and the driving unit 50 can be actuated.

In practice, the connector 11 is disposed on the fixing base 10 in a vertically displaceable manner, so that when the rotary cover 20 is pressed down on the gas valve rotating shaft 103 by an external force, the positioning plate 30, the circuit board 40, the driving unit 50 and the plug portion 31 can be simultaneously displaced downward, and when the rotary cover is displaced downward, the plug terminal group 32 is electrically connected to the connector 11; this embodiment is suitable for a type in which the gas valve shaft 103 of the gas appliance 100 must be pressed first to rotate when opening the switch valve, and if part of the gas valve shaft 103 of the gas appliance 100 can rotate without being pressed, the connector 11 is fixed in the fixing seat 10.

In practice, the fixing base 10 is provided with a sliding slot, the connector 11 is disposed in the sliding slot, and a stop block is disposed outside the connector 11 and opposite to the sliding slot, so as to limit the distance of the connector 11 moving up and down relative to the sliding slot.

After the user presses the rotary cover 20, the positioning plate 30, the plug terminal set 32 of the plug portion 31 and the connector 11 inside the rotary cover 20 simultaneously move downward, and can apply a force to the rotary cover 20 to rotate relative to the positioning plate 30 and the fixing seat 10, so that the safety mechanism is provided like the conventional knob 200 which must be pressed down to drive the gas valve rotating shaft 103, and the malfunction of the knob 200 is prevented from opening the valve.

Moreover, after the plug terminal set 32 is electrically connected to the connector 11, the power and control signals of the control system of the gas appliance 100 can be transmitted to the circuit board 40 and the driving unit 50 through the connector 11 and the plug terminal set 32, so that the driving unit 50 can drive the rotating cover 20 to rotate relative to the positioning plate 30, thereby achieving the functions of automatically adjusting the rotating shaft 103 of the gas valve and automatically closing the valve.

By means of the above structure, the knob 200 is electrically connected to the electrical control system of the gas appliance 100 through the plug-in terminal set 32 and the connector 11 which are easy to be disassembled, so that the knob 200 can be quickly disassembled from the gas valve rotating shaft 103 during installation or maintenance, thereby facilitating the operation of constructors. In addition, when the knob 200 is installed, a waterproof collar 60 is disposed in a gap between the inner periphery of the through hole 102 and the outer periphery of the gas valve rotating shaft 103, and the waterproof collar 60 is clamped in the inner periphery of the through hole 102, so as to prevent oil stains on the panel 101 of the gas appliance 100 from penetrating into the gas appliance 100 through the through hole 102 and affecting the operation of the knob 200.

As shown in fig. 4 to 6, in practice, the driving unit 50 drives the rotary cover 20 to rotate in such a way that the center inside the rotary cover 20 is sleeved outside the shaft sleeve 21 on the gas valve rotating shaft 103, and a driven gear 22 rotating synchronously is arranged, the driving unit 50 includes a motor 52 having an output rotating shaft 51, a transmission gear set 53 rotating in conjunction with the output rotating shaft 51, and at least one clutch gear 54 movably arranged between the transmission gear set 53 and the driven gear 22, and the clutch gear 54 is connected to an elastic element 55; in the illustration, the output shaft 51 is provided with a gear engaged with the transmission gear set 53, and it is not excluded that the output shaft 51 is provided with a worm gear to form a worm engaged with the transmission gear set 53. In addition, the elastic element 55 shown in the figure is a spring, and the elastic sheet can be used for providing elastic force in the implementation.

As shown in fig. 6, when the knob is not used, the clutch gear 54 is maintained in a state of being engaged with the transmission gear set 53, and the clutch gear 54 is maintained at a position away from the driven gear 22 by means of the elastic force provided by the elastic member 55. At this time, when the user rotates the rotary cap 20 by an external force, the sleeve and the driven gear 22 rotate synchronously, but the clutch gear 54 is separated from the driven gear 22, so that the transmission gear set 53, the output rotary shaft 51, and the motor 52 are kept stationary and do not rotate with each other when the driven gear 22 rotates.

As shown in fig. 5, when the motor 52 drives the output shaft 51 to rotate, the rotation of the transmission gear set 53 drives the clutch gear 54 to displace, so that the clutch gear 54 is engaged with the driven gear 22, thereby driving the sleeve to rotate synchronously, and enabling the rotary cover 20 to rotate electrically by the driving of the motor 52. Thus, the rotary cover 20 can be manually rotated and the knob can be automatically rotated in an electrically controlled manner.

Another embodiment of the drive unit 50 as shown in fig. 7 to nine; it is revealed that the motor 52 of the driving unit can drive the output rotating shaft 51 to rotate in the forward or reverse direction and has two clutch gears 54 respectively connected to different elastic members 55; as shown in fig. 7, the two elastic elements 55 respectively provide an elastic force to separate the two clutch gears 54 from the driven gear 22, so that when the user manually rotates the driven gear 22 through the rotary cover 20, the two clutch gears 54 and the transmission gear set 53 are kept in a stationary state and do not rotate with the rotation regardless of the forward rotation or the reverse rotation.

As shown in fig. 8 and 9, when the motor 52 drives the output shaft 51 to rotate in the forward direction or the reverse direction, the driving gear set 53 can drive one of the clutch gears 54 in the corresponding direction to move and then engage with the driven gear 22, so as to drive the shaft sleeve, the gas valve shaft and the rotary cover 20 to rotate in the forward direction or the reverse direction synchronously. That is, in this embodiment, the gas appliance electrical control system can transmit the control signal to the circuit board and the driving unit through the connector and the plug terminal set, so that the driving unit can drive the rotating cover 20 to rotate forward or backward, thereby achieving the purpose of controlling the knob to automatically adjust the size of the fire and automatically close the valve.

As shown in fig. 5 and 10, the circuit board 40 further includes a digital display 41 electrically connected to the circuit board 40 and one or more operation interfaces 42. The top of the rotating cover 20 is provided with a light-permeable operation panel 23, the operation interface 42 is located below the operation panel 23, and the light emitted from the digital display 41 can be displayed through the operation panel 23, such as displaying the set time, the set temperature, and the like.

For example, when the user touches the operation interface 42 of the circuit board 40 through the operation panel 23 to set the fire-off time, and the digital display 41 counts down, when the time reaches the set fire-off time, the circuit board 40 can make the driving unit 50 drive the rotary cover 20 to automatically fire off; certainly, when the fire-off time is set, the fire-off time can also be transmitted to the electric control system of the gas appliance through the circuit board 40, the plug-in terminal group 32 and the connector, and then the electric control system sends out an instruction to reversely transmit the instruction to the knob, so that the knob automatically turns off the fire.

As shown in fig. 3 and 11, when the fixing base 10 of the gas appliance 100 is implemented, the fixing base is disposed outside the housing 71 of a position detector 70 of the electric control system of the gas appliance 100, a bushing 72 is disposed inside the housing 71 of the position detector 70, and the bushing 72 is sleeved on the periphery of the gas valve rotating shaft 103 and can be deflected in an interlocking manner with the gas valve rotating shaft 103.

As shown in fig. 3, 12 to 15, the bushing 72 is provided with a ring magnet 80 that deflects synchronously, the outer shell 71 is provided with at least one magnetic induction element 90 corresponding to the outer side of the ring magnet 80, the magnetic induction element 90 can induce the deflection angle of the ring magnet 80 and output a position signal to be transmitted to the electric control system of the gas appliance 100, or the position signal is transmitted to the circuit board 40 through the connector 11 of the fixing base 10 and the plug-in terminal group 32 of the knob 200, so as to achieve the function of detecting the deflection angle of the gas valve rotating shaft 103 and the knob 200, and after receiving the position signal, the electric control system or the circuit board 40 can adjust the deflection angle of the gas valve rotating shaft 103 or close the valve, or can drive an external smoke exhaust ventilator or other electrical appliances to operate synchronously.

The ring magnet 80 is implemented to have a first magnetic pole N and a second magnetic pole S arranged to be equally divided by 360 degrees. After the ring magnet is magnetized, the position where the magnetic force of the first magnetic pole N and the second magnetic pole S is strongest is separated by about 180 degrees, in order to increase the application range of the ring magnet 80, the inner sides of the ring magnet 80 corresponding to the first magnetic pole N and the second magnetic pole S are further respectively provided with a first magnet 81 and a second magnet 82, and the first magnet 81 is close to one side of the first magnetic pole N and has the same magnetic force as the first magnetic pole N; the second magnet 82 has the same magnetism as the second magnetic pole S on the side close to the second magnetic pole S.

The first and

second magnets

81, 82 are disposed at positions corresponding to the first and second magnetic poles N, S of the ring magnet 80 symmetrically arranged as shown in the figure, and the first and

second magnets

81, 82 are spaced by 180 degrees to 280 degrees, in the present embodiment, the knob 200 has a deflection adjustment stroke of 0 degree to about 230 degrees with respect to the gas appliance 100, and therefore the spacing is 230 degrees as an example in the figure. Therefore, the two magnets with the same polarity as the outer ring are additionally arranged in the magnet, so that the magnetic force of the annular magnet 80 is increased, and the magnetic ring is also suitable for the gas valve rotating shaft 103 with a larger deflection angle.

Furthermore, the gas valve shaft 103 of the gas appliance 100 has a closed position and an outer ring fire closing position, two grooves or protrusions 73 are disposed on the outer wall of the bushing 72, and the two grooves or protrusions 73 are disposed at the outer ring fire closing position and the outer ring fire closing position of the gas valve shaft 103 respectively.

A microswitch 74 is disposed inside the housing 71 of the position detector 70 at the outside of the deflection stroke relative to the bushing 72, and when the two grooves or protrusions 73 rotate to the off-valve position or the position for closing the outer ring fire along with the gas valve rotating shaft 103 and the bushing 72, the microswitch 74 can be triggered respectively, so as to detect that the gas appliance 100 is in the off-valve position or the position for closing the outer ring fire.

For example, in fig. 12, one of the grooves or protrusions 73 of the bushing 72 is located at the valve-closing position, and the microswitch 74 is triggered to be opened, so as to detect that the gas valve rotating shaft 103 is in the valve-closing state. In fig. 13, when the gas valve rotating shaft 103 and the bush 72 are rotated to the strong fire position of the burner, the microswitch 74 is in a closed state. In fig. 14, one of the grooves or protrusions 73 of the bushing 72 rotates to a position for closing the outer ring fire, and activates the micro switch 74 to open, thereby detecting the state of the gas valve rotating shaft 103 closing the outer ring fire and sending a signal to the electronic control system. In fig. 15, when the gas valve rotating shaft 103 and the bush 72 are rotated to the small flame position of the burner, the microswitch 74 is in the off state.

As shown in fig. 3 and 11, the position detector 70 can be installed on the fixing base 10, and the advantage of the position detector 70 is that the knob 200 and the position detector 70 are both centered on the gas valve rotating shaft 103, so that the insertion portion 31 of the knob 200 and the fixing base 10 on the position detector 70 can be accurately aligned when being installed. It is also possible to implement the fixing base 10 in other positions of the burner, not on the position detector. Moreover, this burner also can set up the pressure sensor who is connected with the electrical system electricity, so also can detect out gas pressure, more accurate control knob deflection angle.

For example, after the circuit board 40 sets the time for turning off the fire or adjusts the fire to a small fire, and reaches the time for setting the time for turning off the fire or adjusting the fire to a small fire, the circuit board 40 can enable the driving unit 50 to drive the rotating cover 20 to drive the gas valve rotating shaft 103 to rotate for turning off the fire or turn off the outer ring fire to rotate for turning off the fire to a small fire; in this case, the position detector 70 can detect the rotation angle of the gas valve shaft 103 accurately, and can detect whether the gas valve shaft 103 is actually rotated to the closed position or the closed outer ring fire position by the microswitch 74. Therefore, the fire extinguishing device not only can be used for automatically controlling fire and fire extinguishing after being operated by a user, but also can improve the safety when fire extinguishing is carried out.

In addition, as shown in fig. 1 and 3, the electric control system of the gas appliance 100 further includes a wireless transmission interface 104, and the wireless transmission interface 104 can receive an external command, so that the electric control system of the gas appliance 100 can transmit a control signal to the circuit board 40 and the driving unit 50 through the connector 11 and the plug terminal set 32 of the knob 200, so as to remotely control the driving unit 50 to drive the rotation angle of the rotating cover 20 to adjust the size of the fire or close the valve.

For example: the mobile device of the user can be provided with an application program (APP) compatible with the electric control system, the APP can receive signals output by the wireless transmission interface 104 of the electric control system, the user can know the use state of the combustion appliance, then external instructions are transmitted through Wi-Fi or a wireless network of the mobile device, after the external instructions are received by the wireless transmission interface 104 of the electric control system of the combustion appliance, the combustion appliance is controlled to be closed by the electric control system, or a gas switch and flow are adjusted, or the starting air draft and the air volume of an external range hood are controlled, and the like.

The foregoing description is intended to be illustrative rather than limiting, and it will be appreciated by those skilled in the art that many modifications, variations or equivalents may be made without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. The utility model provides a can automatically controlled and manual rotatory gas utensil knob, this gas utensil is equipped with the gas valve pivot of a control gas switch and flow, and this knob installation combines to rotate its characterized in that with this gas valve pivot of synchronous drive in this gas valve pivot:

the gas valve pivot side of this gas utensil is equipped with a fixing base, and this knob contains a rotatory lid that combines with this gas valve pivot, and this rotatory lid inner space is equipped with a positioning disk, and this positioning disk downwardly extending one with the grafting portion of this fixing base grafting location, and be equipped with one on this positioning disk and gas utensil electrical system electricity be connected and the rotatory drive unit of this rotatory lid of separation and reunion drive, make this rotatory lid can be by outside manual application of force, perhaps drive and rotatory for positioning disk and fixing base through this drive unit.

2. The gas appliance knob according to claim 1, capable of being electrically and manually rotated, wherein: the inside central authorities of this rotatory lid are equipped with the axle sleeve of cup joint in the gas valve pivot, be equipped with synchronous revolution's driven gear on this axle sleeve, this drive unit contains a motor that has the output pivot, a drive gear group with this output pivot interlock, and at least one movably setting clutch gear between this drive gear and driven gear, this clutch gear accepts an elastic element's elasticity and keeps away from this driven gear, when making this rotatory lid rotatory by outside manual application of force, this clutch gear and drive gear group do not along with rotatory, and when this output pivot of this motor drive was rotatory, can drive this clutch gear through this drive gear group and move the back meshing towards driven gear, and then drive this axle sleeve, gas valve pivot and rotatory lid synchronous revolution.

3. The gas appliance knob of claim 2, wherein the driving unit has two clutch gears respectively connected to different elastic members, the two elastic members respectively provide an elastic force to make the two clutch gears away from the driven gear, and when the motor drives the output shaft to rotate in forward or reverse directions, the driving gear set can drive one of the clutch gears in a corresponding direction to move and then engage with the driven gear, thereby driving the shaft sleeve, the gas valve shaft and the rotating cover to rotate in forward or reverse directions synchronously.

4. The gas appliance knob according to any one of claims 1 to 3, wherein the positioning plate is provided with a circuit board electrically connected to the driving unit, the inserting portion is provided with an inserting terminal set electrically connected to the circuit board, the fixing base is provided with a connector electrically connected to the inserting terminal set, and the connector is electrically connected to an electric control system of the gas appliance.

5. The gas appliance knob of claim 4, wherein the connector is disposed in the fixing base in a vertically displaceable manner, such that when the rotary cover is pressed down against the gas valve shaft by an external force, the positioning plate, the circuit board, the driving unit and the insertion portion are simultaneously displaced downward, and the insertion terminal set of the insertion portion is electrically connected to the connector.

6. The gas appliance knob of claim 4, wherein the top of the rotary cover is provided with a light-permeable operation panel, the circuit board is provided with one or more operation interfaces for user operation under the operation panel, and a digital display, and light emitted from the digital display can be displayed through the operation panel.

7. The gas appliance knob according to claim 4, wherein the gas appliance control system comprises a wireless transmission interface, and the wireless transmission interface can receive an external command, so that the gas appliance control system can transmit a control signal to the circuit board and the driving unit through the connector of the fixing base and the plug-in terminal set of the knob, thereby remotely controlling the driving unit to drive the rotation angle of the rotary cover or close the valve.

8. The knob of gas appliance capable of being electrically controlled and manually rotated as claimed in claim 4, wherein the fixing seat of the gas appliance is disposed outside a housing of a position detector of the electrical control system of the gas appliance, a bushing is disposed inside the housing of the position detector and is sleeved around a rotating shaft of the gas valve and capable of being deflected in a linkage manner with the rotating shaft of the gas valve, a ring magnet capable of deflecting synchronously is disposed on the bushing, at least one magnetic sensing element is disposed outside the housing corresponding to the ring magnet, and the magnetic sensing element is capable of sensing a deflection angle of the ring magnet and outputting a position signal to the electrical control system of the gas appliance or transmitting the position signal to the circuit board via a connector of the fixing seat and a plug-in terminal set of the knob.

9. The knob for gas appliance capable of electrically and manually controlled rotation according to claim 8, wherein the ring-shaped magnets are further provided with a first magnet and a second magnet symmetrically arranged at an interval of 180 to 280 degrees inside the first magnetic pole and the second magnetic pole, respectively, and the first magnet has the same magnetism as the first magnetic pole on the side close to the first magnetic pole, and the second magnet has the same magnetism as the second magnetic pole on the side close to the second magnetic pole.

10. The knob for gas appliance capable of electrically and manually controlling rotation as claimed in claim 8, wherein the rotating shaft of the gas valve of the gas appliance has a closing valve position and a closing outer ring fire position, the outer wall of the bushing has two spaced grooves or protrusions corresponding to the closing valve position and the closing outer ring fire position, and the inner part of the housing of the position detector has a micro switch at the outer side of the deflection stroke of the bushing, when the two grooves or protrusions rotate to the closing valve or closing outer ring fire position along with the rotating shaft of the gas valve and the bushing, the micro switch can be activated respectively to detect the state of the gas appliance being in the closing valve or closing outer ring fire.