CN112728592B - Plug valve and gas stove - Google Patents
Plug valve and gas stove Download PDFInfo
- Publication number
- CN112728592B CN112728592B CN202110139426.5A CN202110139426A CN112728592B CN 112728592 B CN112728592 B CN 112728592B CN 202110139426 A CN202110139426 A CN 202110139426A CN 112728592 B CN112728592 B CN 112728592B
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- gear
- valve
- motor
- valve rod
- fire
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C3/00—Stoves or ranges for gaseous fuels
- F24C3/12—Arrangement or mounting of control or safety devices
- F24C3/126—Arrangement or mounting of control or safety devices on ranges
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Mechanically-Actuated Valves (AREA)
- Feeding And Controlling Fuel (AREA)
Abstract
The invention discloses a plug valve and a gas stove, wherein the plug valve comprises a valve seat, a valve rod, a connecting gear, a motor and a transmission gear, wherein the valve rod is arranged on the valve seat, the connecting gear is arranged on the valve rod, and the motor is arranged on the valve seat. The transmission gear comprises a gear body, a transmission gear section and an idle section, wherein the transmission gear section and the idle section are sequentially arranged on the circumference of the gear body, the gear body is connected to a rotating shaft of the motor, the transmission gear is provided with an idle state for stopping rotation and an adjusting state for continuously rotating, the idle state is provided with the idle section facing the connecting gear, and the transmission gear section is intermittently meshed with the connecting gear in the adjusting state. The technical scheme of the invention can avoid the situation that the gas stove cannot be normally used due to the failure or power failure of the motor.
Description
Technical Field
The invention relates to the field of gas appliances, in particular to a plug valve and a gas stove.
Background
Currently, in some gas stoves, a stepping motor and a controller are installed on the gas stove, and the stepping motor is controlled by the controller to drive a valve rod to rotate, so that the intelligent control of the starting, closing and firepower of the gas stove can be realized. However, when only the stepping motor is arranged to drive the valve rod to rotate, if the stepping motor or the controller fails or is not powered, the gas stove cannot be used normally, and the gas stove is very inconvenient for users to use.
Disclosure of Invention
The invention mainly aims to provide a plug valve, which aims to avoid the situation that a gas stove cannot be normally used due to motor failure or power failure.
In order to achieve the above object, the plug valve according to the present invention includes:
a valve seat;
the valve rod is arranged on the valve seat;
the connecting gear is arranged on the valve rod;
the motor is arranged on the valve seat; the method comprises the steps of,
the transmission gear comprises a gear body, a transmission gear section and an idle section, wherein the transmission gear section and the idle section are sequentially arranged on the circumference of the gear body, the gear body is connected to a rotating shaft of the motor, the transmission gear is provided with an idle state for stopping rotation and an adjusting state for continuously rotating, the idle state is provided with the idle section facing the connecting gear, the adjusting state is provided with the transmission gear section which is intermittently meshed with the connecting gear.
Therefore, the automatic regulation of the fire power can be realized by rotating the electric regulating valve rod, and the situation that the gas stove cannot be normally used due to the failure or power failure of the motor can be avoided.
Optionally, the transmission gear comprises a plurality of transmission tooth sections and a plurality of idle sections, and the plurality of transmission tooth sections and the plurality of idle sections are alternately distributed in turn in the circumferential direction of the wheel body; alternatively, the drive gear comprises one of the drive tooth segments and one of the blank segments.
When the transmission gear comprises a plurality of transmission gear sections and a plurality of vacant sections, the transmission gear can drive the connecting gear and the valve rod to rotate for a plurality of times when rotating for a circle, so that the angle of the valve rod rotation can be increased when the motor drives the transmission gear to rotate for a circle, the valve rod rotation speed is higher, and the valve rod can be rapidly rotated to the target firepower gear. When the transmission gear comprises a transmission gear section and an empty section, the structure of the transmission gear is simpler.
Optionally, the transmission gear section is provided with a plurality of meshing teeth, the plurality of meshing teeth are sequentially distributed along the circumferential direction of the wheel body, and each meshing tooth of the same transmission gear section is continuously meshed with the connecting gear; alternatively, the gear tooth segment is provided with an engagement tooth.
When the transmission gear section is provided with a plurality of meshing gears, the angle of driving the valve rod to rotate when the motor drives the transmission gear to rotate for a circle can be increased, so that the valve rod rotating speed is higher, and the valve rod can be quickly rotated to a target firepower gear. When the transmission gear section is provided with a meshing gear, the structure of the transmission gear is simpler.
Optionally, the connecting gear and the transmission gear are cylindrical gears.
So make the structure of connecting gear and drive gear all comparatively simple, be favorable to reducing assembly degree of difficulty and manufacturing cost.
Optionally, the connecting gear and the transmission gear are bevel gears.
Through setting up connecting gear and drive gear as the bevel gear, can guarantee the stationarity of drive gear and connecting gear operation, noise reduction.
Optionally, an axis of the motor is disposed in parallel with the valve stem; alternatively, the axis of the motor intersects the valve stem.
When the axis of the motor is parallel to the valve rod, the radial occupied space of the motor on the connecting gear can be reduced, the radial size of the plug valve on the connecting gear can be reduced, and the plug valve is more compact in structure. When the axis of the motor is intersected with the valve rod, the occupied space of the motor in the length direction of the valve rod can be reduced, and the size of the plug valve in the length direction of the valve rod can be reduced.
Optionally, the connecting gear is located above the transmission gear.
So can make full use of the installation space in the connecting gear kitchen range, promote gas-cooker's compact structure.
Optionally, the valve rod is movable along its length direction to have a fire closing position in which the connecting gear is away from the transmission gear, and an ignition position in which the connecting gear is close to the transmission gear, in which the connecting gear is axially spaced from the transmission gear, in which the valve rod is rotated by pressing, and in which the transmission gear segment is capable of meshing with the connecting gear.
Therefore, even if the motor is started when the gas stove is in a fire-off state, the motor and the transmission gear can not drive the valve rod to rotate, so that the reliability and the safety of the plug valve are greatly improved.
Optionally, the plug valve further comprises a change-over switch, the change-over switch is electrically connected with the motor, the valve rod is provided with a closing gear and a preset firepower gear rotated by a preset angle, and when the valve rod rotates to the preset firepower gear, the valve rod triggers the change-over switch so as to drive the connecting gear to rotate through the motor.
Therefore, after the cooking mode is selected and started through the external terminal, the valve rod does not need to be operated again, so that the operation steps of a user are simplified, and the cooking device is greatly convenient for the user to use.
Optionally, the plug valve further includes a control switch electrically connected to the motor, the transmission gear intermittently triggers the control switch, when the transmission gear rotates in a first direction, the transmission gear triggers the control switch once every time, the fire gear of the gas stove increases by one gear, when the transmission gear rotates in a second direction, the transmission gear triggers the control switch once every time, the fire gear of the gas stove decreases by one gear, and the first direction is opposite to the second direction.
Because the transmission gear can not displace, when the control switch is triggered by the rotation of the transmission gear, the accuracy of detection of the control switch can be ensured, and the accuracy of an automatic fire adjusting function is ensured.
Optionally, the control switch is arranged on one side of the transmission gear, and the transmission gear section intermittently triggers the control switch.
Therefore, the transmission gear section is utilized to trigger the control switch, the additional arrangement of a triggering structure on the transmission gear can be avoided, the structure of the transmission gear can be simplified, and the assembly process of the cock valve can be reduced.
Optionally, the preset fire gear is a minimum fire gear.
Through setting the preset firepower gear at the minimum firepower gear, the heating speed of the cooking utensil can be slowed down, and the risk that food materials in the cooking utensil are burnt due to rapid temperature rise is reduced.
Optionally, when the transmission gear triggers the control switch, the transmission gear is in the idle state; when the valve rod rotates to the closing gear, the valve rod can move to the fire closing position; and under the drive of the motor, when the valve rod rotates to the closing gear, the valve rod triggers the change-over switch, so that the motor stops rotating when the transmission gear triggers the control switch again.
So make the plug valve close after the fire, drive gear is in idle state to when pushing down the valve rod ignition next time, guarantee drive gear's idle section towards connecting gear, thereby avoided the condition that connecting gear and the transmission tooth section on the drive gear interfered, promoted the reliability of plug valve. And the two functions are realized by using the same change-over switch, so that the number of the on-off switches on the plug valve can be reduced, and the structure of the plug valve is simplified.
Optionally, the minimum fire gear is a position where the valve rod rotates counterclockwise from the closing gear to 270 ° or 225 °, and the maximum fire gear of the gas stove is a position where the valve rod rotates counterclockwise from the closing gear to 90 °.
Therefore, more fire gears can be arranged between the minimum fire gear and the maximum fire gear, and the fire regulation precision can be improved.
The invention also provides a gas stove, which comprises the plug valve.
Through increasing motor, connecting gear and drive gear etc. electric control mechanism on the plug valve main part, do not need additionally to set up gas pipeline structure, reduced the degree of difficulty and the gas leakage risk of installation technology, do not influence gas-cooker's original installation technology and gas circuit installation technology. The gas stove of this scheme is identical with the small drain pan gas stove of generally using to the user need not enlarge the mounting hole of installation gas stove when adopting the gas stove of this scheme, has reduced the resistance that the customer changed the gas stove, thereby has reduced the sales threshold of this scheme gas stove, is favorable to promoting market competition.
Optionally, the gas stove further comprises a controller, wherein the controller is electrically connected with a motor of the plug valve so as to control the motor to be started and closed.
The motor can be controlled to start, close and adjust the valve rod by the controller according to the control instruction.
According to the technical scheme, the connecting gear is arranged on the valve rod of the plug valve, the motor and the transmission gear arranged on the rotating shaft of the motor are also arranged on the plug valve, and the transmission gear comprises a wheel body, a transmission tooth section and an empty section which are sequentially arranged on the circumference of the wheel body. When the motor drives the transmission gear to continuously rotate and is in an adjusting state, the transmission gear section is meshed with the connecting gear intermittently, so that the connecting gear and the valve rod can be driven to rotate, and the electric control valve rod can be rotated to adjust the fire power. In addition, when the transmission gear is driven to rotate to an idle state of the idle section facing the connecting gear by the motor, the motor is controlled to stop rotating, so that the transmission gear keeps the idle state of the idle section facing the connecting gear, at the moment, when the valve rod is manually rotated, the transmission gear and the connecting gear can be prevented from interfering with each other, smooth rotation of the valve rod is ensured, and the situation that torque is increased due to rotation of the transmission gear when the valve rod is manually adjusted is avoided. Even if the motor fails and the like to cause the blocking of the transmission gear or the disconnection of the power supply, the gas stove can be started in a manual valve rod rotating mode, so that the situation that the gas stove cannot be normally used due to the failure or power failure of the motor is avoided. That is, the plug valve in the scheme can realize automatic adjustment of firepower through the rotation of the electric adjusting valve rod, and can also avoid the situation that the gas stove cannot be normally used due to the failure or power failure of the motor.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of an embodiment of a plug valve according to the present invention;
FIG. 2 is a schematic diagram of the transmission gear of FIG. 1;
FIG. 3 is a schematic view of a connecting gear and a driving gear in another embodiment of a plug valve according to the present invention;
FIG. 4 is a schematic view of a transmission gear in a further embodiment of a plug valve according to the present invention;
FIG. 5 is a schematic illustration of the structure of the valve stem of FIG. 1 according to the present invention.
Reference numerals illustrate:
| reference numerals | Name of the name | Reference numerals | Name of the name |
| 10 | Plug valve | 142 | Transmission tooth segment |
| 11 | Valve seat | 143 | Meshing teeth |
| 12 | Valve rod | 144 | Empty section |
| 121 | Notch | 15 | Motor with a motor housing |
| 13 | Connecting gear | 16 | Change-over switch |
| 14 | Transmission gear | 17 | Control switch |
| 141 | Wheel body |
The achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that, if a directional indication (such as up, down, left, right, front, and rear … …) is involved in the embodiment of the present invention, the directional indication is merely used to explain the relative positional relationship, movement condition, etc. between the components in a specific posture, and if the specific posture is changed, the directional indication is correspondingly changed.
In addition, if there is a description of "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" as it appears throughout is meant to include three side-by-side schemes, for example, "a and/or B", including a scheme, or B scheme, or a scheme that is satisfied by both a and B. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present invention.
The invention provides a plug valve which is used for a gas stove.
In the embodiment of the present invention, referring to fig. 1 and 2, the plug valve 10 includes a valve seat 11, a valve rod 12, a connecting gear 13, a motor 15 and a transmission gear 14, the valve rod 12 is disposed on the valve seat 11, the connecting gear 13 is disposed on the valve rod 12, and the motor 15 is disposed on the valve seat 11. The transmission gear 14 includes a wheel body 141, a transmission gear section 142 and an idle section 144 which are sequentially provided in the circumferential direction of the wheel body 141, the wheel body 141 is connected to the rotation shaft of the motor 15, the transmission gear 14 has an idle state in which rotation is stopped and an adjustment state in which rotation is continued, the idle section 144 faces the connection gear 13, and the transmission gear section 142 is intermittently engaged with the connection gear 13 in the adjustment state.
In this embodiment, one end of the valve stem 12 is provided with a mounting portion for mounting a knob so that the valve stem 12 can be manually selected by the knob. The transmission gear section 142 is provided with engagement teeth 143, so that in the adjustment state the engagement teeth 143 can engage with the connecting gear 13 and thereby drive the connecting gear 13 to rotate. While the free section 144 is not provided with the engagement teeth 143, so that in the idle state, with the free section 144 facing the connecting gear 13, the connecting gear 13 is spaced from the engagement teeth 143 of the transmission gear section 142 to make the transmission gear 14 and the connecting gear 13 independent of each other. So that the connecting gear 13 and the transmission gear 14 do not interfere with each other when the manual adjustment valve rod 12 rotates, thereby avoiding the situation that the torque is increased when the manual adjustment valve rod 12 rotates to drive the transmission gear 14 to rotate. That is, in the continuously rotating adjustment state, when the transmission gear 14 rotates until the transmission gear segment 142 is meshed with the connection gear 13, the connection gear 13 is driven to rotate, and when the transmission gear 14 rotates until the idle segment 144 faces the connection gear 13, the transmission gear 14 does not drive the connection gear 13 to rotate.
The connecting gear 13 may be sleeved on the valve rod 12, or may be connected with the valve rod 12 through other connecting structures, and similarly, the transmission gear 14 (the wheel body 141) may be sleeved on the rotating shaft of the motor 15, or may be connected with the rotating shaft of the motor 15 through other structures. In this embodiment, the connecting gear 13 is sleeved on the valve rod 12, and the driving gear 14 (the wheel body 141) is sleeved on the rotating shaft of the motor 15, so as to simplify the structure of the plug valve 10.
According to the technical scheme, the connecting gear 13 is arranged on the valve rod 12 of the plug valve 10, the motor 15 and the transmission gear 14 arranged on the rotating shaft of the motor 15 are also arranged on the plug valve 10, wherein the transmission gear 14 comprises a wheel body 141, a transmission tooth section 142 and an empty section 144 which are sequentially arranged on the circumferential direction of the wheel body 141. When the motor 15 drives the transmission gear 14 to continuously rotate and is in an adjusting state, the transmission gear segment 142 is intermittently meshed with the connecting gear 13 so as to drive the connecting gear 13 and the valve rod 12 to rotate, and therefore the rotation of the electric control valve rod 12 can be realized to adjust the fire power. In addition, when the transmission gear 14 is driven by the motor 15 to rotate to an idle state that the idle section 144 faces the connecting gear 13, the motor 15 is controlled to stop rotating, so that the transmission gear 14 keeps the idle state that the idle section 144 faces the connecting gear 13, at the moment, when the valve rod 12 is manually rotated, the transmission gear 14 and the connecting gear 13 can be prevented from interfering with each other, smooth rotation of the valve rod 12 is ensured, and the situation that torque is increased due to rotation of the transmission gear 14 when the valve rod 12 is manually adjusted to rotate is avoided. Even if the motor 15 fails or the like to cause the blocking of the transmission gear 14 or the disconnection of the power supply, the gas stove can be started by manually rotating the valve rod 12, so that the situation that the gas stove cannot be normally used due to the failure or power failure of the motor 15 is avoided. That is, the plug valve 10 in this embodiment can not only automatically adjust the fire power by rotating the electric adjusting valve rod 12, but also avoid the situation that the gas stove cannot be normally used due to the failure or power failure of the motor 15.
In addition, the technical scheme of the invention can be used for adding electric control mechanisms such as the motor 15, the connecting gear 13, the transmission gear 14 and the like on the basis of the conventional plug valve 10, and does not need to additionally arrange a gas pipeline structure, thereby reducing the difficulty and the air leakage risk of the mounting process and not influencing the original mounting process and the gas pipeline mounting process of the gas stove. The gas stove of this scheme is identical with the small drain pan gas stove of generally using to the user need not enlarge the mounting hole of installation gas stove when adopting the gas stove of this scheme, has reduced the resistance that the customer changed the gas stove, thereby has reduced the sales threshold of this scheme gas stove, is favorable to promoting market competition.
The structure of the driving gear 14 has various configurations, for example, referring to fig. 1 and 2, or referring to fig. 1 and 3, in an embodiment, the driving gear 14 includes a plurality of driving gear segments 142 and a plurality of idle segments 144, and the plurality of driving gear segments 142 and the plurality of idle segments 144 are alternately distributed in sequence in the circumferential direction of the wheel body 141. That is, the gear tooth segment 142 is provided with at least two gear tooth segments 142 and at least two idle segments 144, which is equivalent to the plurality of gear tooth segments 142 provided on the wheel body 141, the plurality of gear tooth segments 142 are sequentially distributed at intervals in the circumferential direction of the wheel body 141, and the idle segments 144 are formed between two adjacent gear tooth segments 142 in the circumferential direction of the wheel body 141. When the free section 144 faces the connecting gear 13, the connecting gear 13 is spaced from the meshing teeth 143 of the transfer gear section 142. The number of gear segments 142 may be two, three, four, five or more, etc.
Through setting up a plurality of transmission tooth sections 142, when drive gear 14 rotated a round, can drive connecting gear 13 and valve rod 12 rotation many times to can increase the angle that drive valve rod 12 rotated when motor 15 driven drive gear 14 rotated a round, make valve rod 12 rotational speed faster, with can the quick rotation to target firepower gear. And the length of the idle section 144 in the circumferential direction of the wheel body 141 is reduced, so that the idle state (the state that the transmission gear section 142 is not meshed with the connecting gear 13 when the transmission gear 14 continuously rotates) of the transmission gear 14 is reduced under the condition that the connecting gear 13 and the transmission gear section 142 are not interfered with each other in the adjusting state, the energy waste in the idle state of the transmission gear 14 can be reduced, and the energy saving is facilitated. In order to ensure the rotation accuracy of the control valve rod 12, in one embodiment, the plurality of transmission gear segments 142 are uniformly spaced apart in the circumferential direction of the wheel body 141, and the plurality of idle segments 144 are also uniformly spaced apart in the circumferential direction of the wheel body 141.
Referring to fig. 1 and 4, in another embodiment, the drive gear 14 includes a drive tooth segment 142 and a free segment 144. That is, a transmission gear section 142 and a free section 144 are sequentially provided in the circumferential direction of the wheel body 141, so that the structure of the transmission gear 14 is relatively simple. The arc lengths of the gear tooth segment 142 and the idle segment 144 in the circumferential direction of the wheel body 141 may be the same or different.
Referring to fig. 1 and 3, or referring to fig. 1 and 4, in an embodiment, the gear tooth segment 142 is provided with a plurality of engaging teeth 143, the plurality of engaging teeth 143 are sequentially distributed along the circumference of the wheel body 141, and each engaging tooth 143 of the same gear tooth segment 142 is continuously engaged with the connecting gear 13. That is, each of the transmission gear sections 142 is provided with at least two engagement teeth 143, so that in the process of rotating the transmission gear 14 until the transmission gear section 142 is engaged with the connection gear 13, the rotation angle of the connection gear 13 and the valve rod 12 is driven to be larger, and thus, the rotation angle of the valve rod 12 can be increased when the motor 15 drives the transmission gear 14 to rotate for one circle, the rotation speed of the valve rod 12 is faster, and the valve rod 12 can be rapidly rotated to the target fire gear. Wherein the number of teeth 143 of the gear tooth segment 142 may be two, three, four or more, etc.
In another embodiment, the gear tooth segment 142 may also be provided with an engagement tooth 143. This makes the structure of the transmission gear 14 relatively simple.
Referring to fig. 1 and 3, in one embodiment, the connecting gear 13 and the driving gear 14 are cylindrical gears. In this embodiment, the connecting gear 13 and the transmission gear 14 are spur gears. But is not limited thereto, in other embodiments, the connecting gear 13 and the transmitting gear 14 may be helical spur gears or other types of spur gears. When the connecting gear 13 and the transmission gear 14 are both arranged to be cylindrical gears, the structures of the connecting gear 13 and the transmission gear 14 are simpler, and the assembly difficulty and the production cost are reduced.
In addition, in another embodiment, referring to fig. 1 and 2, the connecting gear 13 and the transmission gear 14 are bevel gears. In this embodiment, the connecting gear 13 and the transmission gear 14 are straight bevel gears. But is not limited thereto, in other embodiments, the connecting gear 13 and the transfer gear 14 may be bevel gears of helical teeth or other types. By arranging the connecting gear 13 and the transmission gear 14 as bevel gears, the running stability of the transmission gear 14 and the connecting gear 13 can be ensured, and noise can be reduced.
When the connecting gear 13 and the transfer gear 14 are bevel gears, in one embodiment, the axis of the motor 15 is parallel to the valve stem 12. That is, the axis of the motor 15 is parallel to the valve rod 12 and is arranged in parallel, so that the space occupied by the motor 15 in the radial direction of the connecting gear 13 can be reduced, the size of the plug valve 10 in the radial direction of the connecting gear 13 can be reduced, and the structure of the plug valve 10 is more compact.
In another embodiment, the axis of motor 15 intersects valve stem 12. That is, the included angle between the extending direction of the axis of the motor 15 and the extending direction of the valve rod 12 may be a right angle or an acute angle, so that the motor 15 is installed along the radial direction of the connecting gear 13, which can reduce the occupied space of the motor 15 in the length direction of the valve rod 12, and is beneficial to reducing the size of the plug valve 10 in the length direction of the valve rod 12.
When the connecting gear 13 and the transmission gear 14 are bevel gears, in one embodiment the connecting gear 13 is located above the transmission gear 14. When the plug valve 10 is mounted on a stove body of a gas stove, an operation panel is arranged on the stove body, one end of the valve rod 12 needs to be upwards extended out of the stove body through the operation panel, or a rotating piece needs to be extended into the stove body through the operation panel to be connected with the valve rod 12 for manually rotating the valve rod 12. By positioning the connecting gear 13 above the transmission gear 14, the distance between the connecting gear 13 and the operation panel can be made closer, so that the length of the portion of the valve stem 12 extending outside the range through the operation panel can be reduced, or the length of the rotary member extending inside the range can be reduced. Meanwhile, the motor 15 can be arranged below or on the side surface of the connecting gear 13, so that the installation space in the stove body of the connecting gear 13 can be fully utilized, and the structural compactness of the gas stove is improved. Of course, in other embodiments, the connecting gear 13 may be disposed below the transmission gear 14.
In one embodiment, the diameter of the transfer gear 14 is smaller than the diameter of the connecting gear 13. In the technical scheme of the invention, when the rotation speed of the motor 15 is consistent, the rotation speed of the connecting gear 13 is mainly influenced by the number of the transmission gear sections 142 on the transmission gear 14 and the number of the meshing teeth 143 on the transmission gear sections 142. Therefore, when the number of the transmission tooth sections 142 on the transmission gear 14 and the number of the meshing teeth 143 on the transmission tooth sections 142 are ensured to meet the transmission requirement, the diameter of the transmission gear 14 can be smaller than the diameter of the connecting gear 13, so that the occupied space of the transmission gear 14 can be reduced, and the structural compactness of the plug valve 10 is improved. Of course, in other embodiments, the diameter of the transfer gear 14 and the diameter of the connecting gear 13 may be substantially the same. In addition, the motor 15 may be provided as a reduction motor 15.
Referring to fig. 1 and 2, in one embodiment, the valve rod 12 is movable along its length to have a fire closing position where the connecting gear 13 is far from the driving gear 14, and an ignition position where the connecting gear 13 is close to the driving gear 14, where the connecting gear 13 is spaced from the driving gear 14 in the axial direction (the axial direction of the connecting gear 13, i.e., the length direction of the valve rod 12), and where the driving gear segment 142 is capable of meshing with the connecting gear 13 when the valve rod 12 is pressed to rotate. Specifically, the ignition position and the off position are two positions at which the valve stem 12 moves in the longitudinal direction thereof, and the valve stem 12 does not rotate when switching between the ignition position and the off position. The valve stem 12 also has a closing gear and a fire gear rotated by a certain angle from the closing gear, and the valve stem 12 is switchable between an ignition position and a fire-off position when the valve stem 12 is in the closing gear.
When the plug valve 10 is actuated to fire, the valve stem 12 needs to be depressed to the firing position, causing the valve stem 12 to trigger the ignition switch to provide the ignition signal to the pulse initiator to initiate the pulse initiator to fire. At the moment, the valve rod 12 is manually rotated, so that the valve rod 12 is rotated from a closing gear to a fire gear, and the valve is opened to open fuel gas, so that the gas stove is ignited. When the valve rod 12 is in the ignition position and rotated into the fire gear, the connecting gear 13 faces the free section 144 of the transmission gear 14, and when the transmission gear 14 is rotated by the starting motor 15, the transmission gear section 142 can be meshed with the connecting gear 13. When the valve is required to be closed, the valve rod 12 is rotated to a closing gear to close the valve, the valve rod 12 can move to the closing position, the valve rod 12 is sprung upwards, and the connecting gear 13 is disengaged from the transmission gear 14, so that the connecting gear 13 and the transmission gear 14 are axially spaced. So even the motor 15 is started when the gas stove is in the fire-off state, the motor 15 and the transmission gear 14 can not drive the valve rod 12 to rotate, and the reliability and the safety of the plug valve 10 are greatly improved. Of course, in other embodiments, the drive tooth segment 142 can be engaged with the connecting gear 13 in both the off and on positions.
In one embodiment, the plug valve 10 further includes a switch 16, where the switch 16 is electrically connected to the motor 15, the valve rod 12 has a closed gear and a preset fire gear rotated by a preset angle, and when the valve rod 12 rotates to the preset fire gear, the valve rod 12 triggers the switch 16 to drive the connecting gear 13 to rotate through the motor 15. Specifically, when the plug valve 10 is mounted on a gas range, the motor 15 and the switch 16 are electrically connected to a controller of the gas range. When the valve rod 12 is rotated to a preset firepower gear and the change-over switch 16 is triggered, the controller of the gas stove starts an automatic fire adjusting function after detecting that the change-over switch 16 is triggered, and then controls the motor 15 to drive the valve rod 12 to rotate to a target firepower gear according to a preset program, so that the function of automatically adjusting firepower is achieved. The automatic fire adjusting function is started by triggering the change-over switch 16 through the valve rod 12, so that an operation button is prevented from being additionally arranged on an operation panel of the gas stove, and the structure of the gas stove is facilitated to be simplified. Of course, in other embodiments, the switch 16 may be provided on the operation panel of the gas stove, so as to activate the motor 15 by manually triggering the switch 16.
Wherein, can rotate to the firepower gear of predetermineeing through manual regulation valve rod 12 to start the automatically regulated function, so when making the user start plug valve 10 fire, can rotate valve rod 12 to the firepower gear of predetermineeing, need not additionally operate other positions and can start the automatically regulated function, can be convenient for user's operation. The external terminal can also send a starting instruction to the controller of the gas stove, and the controller controls the motor 15 to drive the valve rod 12 to rotate to a preset firepower gear. That is, when the valve rod 12 does not trigger the change-over switch 16 after firing, if the automatic fire adjusting function needs to be started, a starting instruction can be sent to the controller of the gas stove through the external terminal, so that the controller controls the motor 15 to drive the valve rod 12 to rotate towards a preset fire power gear, and when the valve rod 12 rotates to the preset fire power gear and the change-over switch 16 is triggered, the automatic fire adjusting function is started. Thus, after the cooking mode is selected and started by the external terminal, the valve rod 12 does not need to be operated again, so that the operation steps of a user are simplified, and the cooking device is greatly convenient for the user to use.
In one embodiment, the switch 16 is a micro switch. In particular, the switch 16 may be a normally closed microswitch or a normally open microswitch. The valve rod 12 is provided with a notch 121 (refer to fig. 5), the pressing part of the switch 16 is abutted against the outer circumferential surface of the valve rod 12 in the process of rotating the valve rod 12 from the closing gear to the preset fire gear, so that the switch 16 is in a closing state, when the valve rod 12 rotates to the preset fire gear, the pressing part of the switch 16 is positioned in the notch 121, so that the switch 16 is switched from the closing state to the opening state, namely, when the valve rod 12 rotates to the preset fire gear, the state of the switch 16 is changed, a trigger signal is generated, and when the controller of the gas stove detects the trigger signal generated by the switch 16, the automatic fire adjusting function is started. Such a simple structure is advantageous in simplifying the structure of the valve stem 12 and the plug valve 10. Of course, in other embodiments, a protrusion may be provided on the outer peripheral surface of the valve rod 12, so that the switch 16 is switched from the open state to the closed state when the valve rod 12 rotates to the preset fire gear, and in addition, the switch 16 may be a photoelectric sensor or a hall sensor, etc.
In one embodiment, the preset fire gear is a minimum fire gear. In this embodiment, the valve stem 12 rotates counterclockwise from the closed position to the minimum power position, and the minimum power position is the maximum angle at which the valve stem 12 rotates. Thus, when the preset fire power range is set at the minimum fire power range, the user can conveniently determine the position of the preset fire power range, thereby facilitating the user to manually rotate the valve rod 12 to the preset fire power range. In addition, when the automatic fire adjusting function is started, the motor 15 may not immediately drive the valve rod 12 to rotate to the target fire gear, and if the preset fire gear is set at a gear with larger fire, the temperature of the cooking appliance may be rapidly increased, so that food materials in the cooking appliance are burnt. And through setting the preset firepower gear at the minimum firepower gear, the heating speed of the cooking utensil can be slowed down, and the risk of burning food materials in the cooking utensil due to rapid temperature rise is reduced. Of course, in other embodiments, the preset fire gear may be set to other fire gears.
In an embodiment, the plug valve 10 further includes a control switch 17 electrically connected to the motor 15, the transmission gear 14 intermittently activates the control switch 17, when the transmission gear 14 rotates in the first direction, each time the transmission gear 14 activates the control switch 17, the fire gear of the gas stove increases by one gear, and when the transmission gear 14 rotates in the second direction, each time the transmission gear 14 activates the control switch 17, the fire gear of the gas stove decreases by one gear, and the first direction is opposite to the second direction. Specifically, the first direction and the second direction are opposite circumferential directions, and the first direction is described below as an example of a counterclockwise direction, but the present invention is not limited thereto. When the first direction is counterclockwise, the second direction is clockwise. When the plug valve 10 is installed on a gas stove, the control switch 17 is electrically connected with a controller of the gas stove, and when the control switch 17 is triggered by the transmission gear 14, the controller of the gas stove can detect a trigger signal generated by the control switch 17, and then the valve rod 12 can be driven to rotate by controlling the motor 15 to rotate.
When the motor 15 drives the transmission gear 14 to rotate for one circle, the transmission gear 14 at least triggers the control switch 17 once, when the automatic fire adjusting function is performed, the preset fire gear is recorded as an initial gear, when the motor 15 drives the transmission gear 14 to rotate along the first direction (anticlockwise direction), the transmission gear 14 triggers the control switch 17 once every time, the connecting gear 13 is meshed with the transmission gear segment 142 at least once, and accordingly the valve rod 12 is driven to rotate for a certain angle along the clockwise direction, and the fire gear of the gas stove is increased by one gear. When the valve rod 12 is rotated clockwise to the maximum fire gear under the driving of the motor 15, the motor 15 is controlled by the controller to stop rotating. When the fire power of the gas stove needs to be reduced, the motor 15 drives the transmission gear 14 to rotate along the second direction (along the needle direction), and the transmission gear 14 triggers the control switch 17 once every time, and the connecting gear 13 is meshed with the transmission gear section 142 at least once, so that the valve rod 12 is driven to rotate by a certain angle along the anticlockwise direction, and the fire power gear of the gas stove is reduced by one gear. And when the valve rod 12 is rotated in the counterclockwise direction to the minimum fire gear under the driving of the motor 15, the motor 15 is controlled by the controller to stop rotating. I.e., during automatic fire adjustment, valve stem 12 rotates between a maximum fire gear and a minimum fire gear. Since the transmission gear 14 cannot be displaced, when the control switch 17 is triggered by the rotation of the transmission gear 14, the accuracy of the detection of the control switch 17 can be ensured, and the accuracy of the automatic fire adjusting function can be ensured. Of course, in other embodiments, the control switch 17 may also be triggered by the connecting gear 13.
In one embodiment, the control switch 17 is a micro switch. In particular, the control switch 17 may be a normally closed microswitch or a normally open microswitch. Such a simple structure is advantageous in simplifying the structure of the valve stem 12 and the plug valve 10. Of course, in other embodiments, the control switch 17 may be a photoelectric sensor or a hall sensor, or the like.
In one embodiment, the control switch 17 is provided on one side of the drive gear 14, and the drive gear segment 142 intermittently activates the control switch 17. That is, the engagement teeth 143 of the gear segment 142 can trigger the control switch 17, so that the gear segment 142 is utilized to trigger the control switch 17, thereby avoiding the additional arrangement of a trigger structure on the gear 14, simplifying the structure of the gear 14, and reducing the assembly process of the plug valve 10. Of course, in other embodiments, an actuation structure for actuating the control switch 17 may be additionally provided on the transmission gear 14.
In one embodiment, the minimum power range is the position where the valve stem 12 is rotated counterclockwise from the closed range to 270 ° or 225 °, and the maximum power range of the gas range is the position where the valve stem 12 is rotated counterclockwise from the closed range to 90 °. Therefore, more fire gears can be arranged between the minimum fire gear and the maximum fire gear, and the fire regulation precision can be improved. Of course, in other embodiments, the minimum and maximum power gears may be in other positions.
In one embodiment, when the drive gear 14 activates the control switch 17, the drive gear 14 is in an idle state; valve stem 12 is movable to a fire-off position when valve stem 12 is rotated to a closed position. When the valve rod 12 is rotated to the closing position by the motor 15, the valve rod 12 activates the change-over switch 16 to stop the rotation of the motor 15 when the transmission gear 14 activates the control switch 17 again. That is, when the control switch 17 is triggered by the transmission gear 14 to generate a trigger signal, the transmission gear 14 is positioned at the end of engagement of the transmission gear segment 142 with the connection gear 13, so that the empty segment 144 faces the idle state of the connection gear 13. In other words, the engagement of the transmission gear segment 142 with the connecting gear 13 is completed such that the transmission gear 14 activates the control switch 17 to generate the activation signal when the connecting gear 13 faces the free segment 144.
The controller controls the motor 15 to drive the valve stem 12 to rotate toward the closing gear when a fire closing instruction is sent to the controller of the gas range through the external terminal or when the menu program ends to automatically close the fire. When the valve stem 12 is rotated to the closing position, the valve stem 12 can trigger the change-over switch 16, and the valve stem 12 can be automatically changed to the fire-off position, so that the connecting gear 13 and the transmitting gear 14 are spaced in the axial direction of the connecting gear 13. When the valve rod 12 triggers the switch 16, the controller detects a trigger signal that the switch 16 is triggered, and uses the trigger signal as one of the indication signals for controlling the motor 15 to stop rotating. After the controller detects that the switch 16 is triggered by the valve rod 12 to generate a trigger signal, the controller controls the motor 15 to stop rotating when detecting that the control switch 17 is triggered by the transmission gear 14 to generate an electric signal of the trigger signal. Therefore, after the plug valve 10 is closed, the transmission gear 14 is in an idle state, so that when the valve rod 12 is pressed down for ignition next time, the idle section 144 of the transmission gear 14 is ensured to face the connecting gear 13, the condition that the connecting gear 13 interferes with the transmission gear section 142 on the transmission gear 14 is avoided, and the reliability of the plug valve 10 is improved. And the same change-over switch 16 is utilized to realize two functions, so that the number of the switch on the plug valve 10 can be reduced, and the structure of the plug valve 10 is simplified. Of course, in other embodiments, another switch 16 may be provided to provide an indication to stop the rotation of the control motor 15. Or by other means to determine that valve stem 12 has rotated to a closed position.
When the switch 16 is a micro switch, the notch 121 (refer to fig. 5) on the valve rod 12 may extend along the circumferential direction of the valve rod 12, so as to ensure that the contact portion of the switch 16 is located in the notch 121 when the valve rod 12 rotates to a preset fire gear, and the contact portion of the switch 16 is also located in the notch 121 when the valve rod 12 rotates to a closing gear. Alternatively, two notches 121 may be provided in the valve stem 12, and when the valve stem 12 is rotated to a predetermined fire range, the contact portion of the switch 16 is positioned in one of the notches 121, and when the valve stem 12 is rotated to a closed range, the contact portion of the switch 16 is positioned in the other notch 121.
The invention also provides a gas stove, which comprises a stove body and a plug valve 10, wherein the specific structure of the plug valve 10 refers to the embodiment, and as the gas stove adopts all the technical schemes of all the embodiments, the gas stove at least has all the beneficial effects brought by the technical schemes of the embodiments, and the details are not repeated here. Wherein, the plug valve 10 is arranged on the kitchen range body.
In one embodiment, the gas range further includes a controller electrically connected to the motor 15 of the plug valve 10 to control the motor 15 to be turned on and off. I.e., the controller is used to control the motor 15 to activate, deactivate and regulate the valve stem 12 in accordance with the control instructions.
In one embodiment, the gas range includes a temperature sensor disposed on the range body and electrically connected to a controller for detecting an appliance temperature of a cooking appliance on the range body, and the controller is further configured to control the motor 15 to adjust the valve stem 12 according to the appliance temperature. That is, when the automatic adjusting function is started, the appliance temperature of the cooking appliance on the oven body can be detected in real time by the temperature sensor, so that the controller can control the motor 15 to drive the valve stem 12 to the target fire gear according to the appliance temperature. So can promote the accuracy of the automatic fire function of adjusting of gas-cooker.
The foregoing description is only of the preferred embodiments of the present invention and is not intended to limit the scope of the invention, and all equivalent structural changes made by the description of the present invention and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the invention.
Claims (15)
1. A plug valve, comprising:
a valve seat;
the valve rod is arranged on the valve seat;
the connecting gear is arranged on the valve rod;
the motor is arranged on the valve seat; and
the transmission gear comprises a wheel body, a transmission tooth section and an idle section, wherein the transmission tooth section and the idle section are sequentially arranged on the circumference of the wheel body, the wheel body is connected to a rotating shaft of the motor, the transmission gear is provided with an idle state for stopping rotation and an adjusting state for continuously rotating, the idle state is provided with the idle section facing the connecting gear, and the transmission tooth section is intermittently meshed with the connecting gear in the adjusting state;
the plug valve further comprises a change-over switch, the change-over switch is electrically connected with the motor, the valve rod is provided with a closing gear and a preset fire gear rotated by a preset angle, and when the valve rod rotates to the preset fire gear, the valve rod triggers the change-over switch so as to drive the connecting gear to rotate through the motor;
the valve rod is provided with a notch, the valve rod is in the process of rotating from the closing gear to the preset fire gear, the pressing part of the change-over switch is abutted to the outer circumferential surface of the valve rod, so that the change-over switch is in a closed state, and when the valve rod rotates to the preset fire gear, the pressing part of the change-over switch is positioned in the notch, so that the change-over switch is switched from the closed state to the open state.
2. The plug valve of claim 1, wherein the drive gear includes a plurality of the drive tooth segments and a plurality of the idle segments, the plurality of the drive tooth segments and the plurality of idle segments being alternately distributed in sequence in a circumferential direction of the wheel body; alternatively, the drive gear comprises one of the drive tooth segments and one of the blank segments.
3. The plug valve of claim 1, wherein said gear tooth segment is provided with a plurality of engagement teeth, said plurality of engagement teeth being sequentially distributed along the circumference of said wheel body, each engagement tooth of the same gear tooth segment being continuously engaged with said connecting gear; alternatively, the gear tooth segment is provided with an engagement tooth.
4. The plug valve of claim 1 wherein said connecting gear and said transfer gear are cylindrical gears.
5. The plug valve of claim 1, wherein the connecting gear and the transfer gear are bevel gears.
6. The plug valve of claim 5 wherein the axis of the motor is disposed in parallel with the valve stem; alternatively, the axis of the motor intersects the valve stem.
7. The plug valve of claim 5 wherein said connecting gear is located above said drive gear.
8. A plug valve according to any one of claims 1 to 7, wherein the valve stem is movable along its length to have a fire-off position in which the connecting gear is spaced axially from the drive gear, and a fire-on position in which the drive gear is engageable with the connecting gear upon depression rotation of the valve stem.
9. The plug valve of claim 8, further comprising a control switch electrically connected to the motor, wherein the drive gear intermittently activates the control switch, wherein each time the drive gear rotates in a first direction, the drive gear increases the fire gear of the gas range by one step, and each time the drive gear rotates in a second direction, the drive gear decreases the fire gear of the gas range by one step, wherein the first direction is opposite to the second direction.
10. The plug valve of claim 9 wherein said control switch is disposed on one side of said drive gear, said drive gear segment intermittently activating said control switch.
11. The plug valve of claim 1, wherein the preset fire gear is a minimum fire gear.
12. The plug valve of claim 9 wherein said drive gear is in said idle state when said drive gear triggers said control switch; when the valve rod rotates to the closing gear, the valve rod can move to the fire closing position;
and under the drive of the motor, when the valve rod rotates to the closing gear, the valve rod triggers the change-over switch, so that the motor stops rotating when the transmission gear triggers the control switch again.
13. The plug valve of claim 11, wherein the minimum power range is a position in which the valve stem is rotated counterclockwise from the closed range to 270 ° or 225 °, and the maximum power range of the gas range is a position in which the valve stem is rotated counterclockwise from the closed range to 90 °.
14. A gas range comprising a plug valve according to any one of claims 1 to 13.
15. The gas cooker of claim 14, further comprising a controller electrically connected to a motor of said plug valve to control the motor to be turned on and off.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110139426.5A CN112728592B (en) | 2021-02-01 | 2021-02-01 | Plug valve and gas stove |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110139426.5A CN112728592B (en) | 2021-02-01 | 2021-02-01 | Plug valve and gas stove |
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| CN112728592A CN112728592A (en) | 2021-04-30 |
| CN112728592B true CN112728592B (en) | 2023-07-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110139426.5A Active CN112728592B (en) | 2021-02-01 | 2021-02-01 | Plug valve and gas stove |
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| CN2198566Y (en) * | 1994-05-17 | 1995-05-24 | 吴军 | Electric regulator for gas burning water heater valve |
| JPH10311535A (en) * | 1997-05-14 | 1998-11-24 | Matsushita Electric Ind Co Ltd | Gas cooker |
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| CN112728592A (en) | 2021-04-30 |
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