CN110887063A

CN110887063A - Knob display anti-pasting anti-overflow gas stove

Info

Publication number: CN110887063A
Application number: CN201910947407.8A
Authority: CN
Inventors: 李尚�; 尹天民
Original assignee: Chuzhou Hanlin Intelligent Technology Co Ltd
Current assignee: Chuzhou Hanlin Intelligent Technology Co Ltd
Priority date: 2019-10-08
Filing date: 2019-10-08
Publication date: 2020-03-17

Abstract

The invention relates to a knob display anti-pasting and anti-overflowing gas stove which comprises a stove body, a stove head, an electronic knob switch embedded with a display screen, a protective bottom shell, a PCB circuit board, a motor airflow valve mechanism and a telescopic temperature sensor. The gas stove is an electronic control type gas stove, has reasonable structural design, compact volume and easy operation and use, can control temperature and intelligently adjust fire to prevent pan burning and overflow.

Description

Knob display anti-pasting anti-overflow gas stove

Technical Field

The invention relates to the technical field of gas cookers, in particular to an anti-burnt and anti-overflow electronic control type gas stove with a temperature-controllable knob display.

Background

The gas cooker is a kitchen utensil which is heated by direct fire with gas fuels such as liquefied gas, natural gas, artificial gas and the like and is used for cooking food by providing thermal power. The existing gas stove comprises a stove body, a stove head, a gas valve device, an ignition and adjustment electronic knob switch and other components, wherein the stove head is arranged on the stove body and used for supporting a cooker, the gas valve device is arranged on the stove body and used for conveying gas fuel to the stove head so as to adjust the firepower of the stove head, and the adjustment electronic knob switch is rotatably arranged on the stove body and connected with the gas valve device.

The existing gas stove has two main fire control modes, one mode is that a mechanical knob is used for controlling, the fire size is indicated according to different rotation angles of the knob, the realization mode can only realize fuzzy adjustment of the fire, different fire does not have obvious grade division, and a user often needs to check the actual fire size of a cooking range when in use. The other method is to realize firepower adjustment through an electric control air valve device, a plurality of firepower gears are usually preset, and when a user adjusts firepower, the firepower can only be adjusted according to the gears, so that accurate control of firepower cannot be realized. In order to facilitate a user to check the fire gear, a display device is arranged in the gas stove, and the dynamic display of the fire gear of the gas stove head is realized through the display device. However, most display devices are touch-sensitive, have no operation hand feeling, easily accumulate dirt in the using process, and influence the use feeling of users when the touch position has oil stains.

In addition, as the pace of life of people increases, the frequency of telephone use is more and more, so that many users often ignore the cooked dishes because of suddenly receiving a telephone when cooking, and the cooked dishes are easily burnt or overflowed, which may cause fire in a serious situation.

Disclosure of Invention

The invention aims to provide the knob with the temperature control function and the electronically controlled gas stove capable of intelligently adjusting fire to prevent burning and overflowing, which have the advantages of simple and reliable structure, convenience and simplicity in use.

In order to achieve the purpose, the invention adopts the technical scheme that the knob display anti-paste anti-overflow gas stove comprises a stove body, a stove head, an electronic knob switch embedded with a display screen, a protective bottom shell, a PCB circuit board, a motor airflow valve mechanism and a telescopic temperature sensor, wherein the stove head and the electronic knob switch are correspondingly arranged in mounting hole positions on a stove body panel, the protective bottom shell and the motor airflow valve mechanism are respectively arranged at the front side and the rear side of the bottom of the stove body panel, the PCB circuit board is arranged in the protective bottom shell, the electronic knob switch is arranged right above the PCB circuit board, the stove head and the motor airflow valve mechanism are connected through an air guide pipeline, an air inlet main pipe is arranged on the motor airflow valve mechanism, the telescopic temperature sensor is embedded in the center of a burner of the stove head, and the temperature sensing part at the top end of the telescopic temperature sensor can be tightly attached to the bottom of a cooker, the electronic knob switch, the motor airflow valve mechanism and the telescopic temperature sensor are all electrically connected with the PCB.

As an improvement of the invention, the motor airflow valve mechanism comprises an air inlet main pipe, a valve body, an electromagnetic air valve, an inner ring gas proportional valve, an outer ring gas proportional valve, a motor valve, an inner ring gas pipe, an outer ring gas pipe, a zero position sensor, an angle sensor and a motor, wherein the electromagnetic air valve, the inner ring gas proportional valve, the outer ring gas pipe, the zero position sensor, the angle sensor and the motor are arranged on the valve body, the air inlet main pipe is arranged at an air inlet of a main gas circuit in the valve body, the air inlet of the electromagnetic air valve is connected to an air outlet of the main gas circuit, the air outlet of the electromagnetic air valve is respectively connected with the inner ring gas circuit and the outer ring gas circuit through the inner ring gas proportional valve and the outer ring gas proportional valve, the motor valve in the gas circuit is in transmission connection with a rotating shaft of the motor, the, The angle sensor and the motor are connected with the PCB through wires.

As an improvement of the invention, the electronic knob switch comprises a hollow encoder, a pressing switch, a hollow knob member, a hollow fixing member, a display screen and a transparent cover, wherein the upper part of a protective bottom shell is convexly provided with a hollow connector, the hollow connector is penetrated and connected in a panel hole of a stove body, the hollow connector is fixedly connected with a panel of the stove body through a fastening member, a containing cavity is arranged in the protective bottom shell, a PCB circuit board is arranged in the containing cavity, the hollow encoder is welded on the PCB circuit board, the upper part of the hollow encoder extends into the hollow connector, the pressing switch is arranged on the PCB circuit board positioned in the hollow part of the hollow encoder, the lower part of the hollow knob member is fixedly connected with a rotatable outer ring of the hollow encoder after being inserted from the hollow connector, the upper part of the hollow knob member is protruded downwards to extend an extension cover, the extension cover can wrap the fastening member, the hollow, the upper portion of cavity mounting is connected with the upper portion joint of cavity knob spare, the lower part of cavity mounting and the inner circle fixed connection of cavity encoder, the bottom of cavity mounting contacts with the elastic contact of push type switch, the display screen is installed in the display screen mounting groove that is located cavity mounting upper portion, the display screen passes through the wire and connects the PCB circuit board, the top of cavity knob spare is located to the translucent cover to locate the inside of translucent cover with the display screen cover, the display screen is all the time just facing the translucent cover.

As an improvement of the invention, the hollow encoder comprises a fixed base, a rotatable outer ring and an inner ring, wherein the rotatable outer ring is rotatably arranged on the fixed base, the inner ring is fixedly arranged on the fixed base, the inner ring is arranged on the inner side of the rotatable outer ring, a plurality of sliding grooves and lock holes are formed in the outer side wall of the rotatable outer ring, a plurality of inner sliding grooves are formed in the inner side wall of the inner ring, a track and a buckle which are matched with the sliding grooves and the lock holes are formed in the inner side wall of a hollow knob piece, the hollow knob piece is fixedly connected with the sliding grooves and the lock holes of the rotatable outer ring in a butt joint mode through the track and the buckle, the hollow knob piece can rotate along with the rotatable outer ring of the hollow encoder, a track which is matched with the inner sliding grooves of the inner ring is formed in the outer side.

As an improvement of the invention, a supporting part is protruded and extended upwards at the top of the extension cover, the transparent cover is fixedly connected with the supporting part, a lower hanging lug with an upward direction is arranged at the inner side of the supporting part, an upper hanging lug with a downward direction is arranged at the outer side of the upper part of the hollow fixing part, the upper hanging lug and the lower hanging lug are connected in a clamping manner, so that the hollow knob part and the hollow fixing part are connected in a limiting manner, and the hollow fixing part and the hollow knob part can slide up and down together.

As an improvement of the invention, the telescopic temperature sensor comprises a sensor body, a heat insulation outer cover, a spring, a support and a base, wherein the top end of the sensor body is provided with a temperature sensing part, the heat insulation outer cover is detachably covered outside the sensor body, the temperature sensing part of the sensor body can movably penetrate through the top of the heat insulation outer cover to enable the temperature sensing part to protrude out of the top of the heat insulation outer cover, the heat insulation outer cover is fixedly connected with the base through the support, the bottom end of the sensor body is connected with the ceramic base through the spring, the spring is arranged in a hollow part of the support, and a free reciprocating stroke of more than 10mm is formed between the.

As an improvement of the invention, the cooking range comprises a supporting bottom plate, a cast iron bracket, a burner, a thermocouple, an ignition needle, an outer fire nozzle seat and an inner fire nozzle seat, the supporting bottom plate is embedded in a mounting hole position on a panel of the cooking range body, retractable temperature sensor fixed mounting is in the middle part of supporting baseplate, thermocouple and ignition needle fixed mounting are in retractable temperature sensor's both sides, outer fire nozzle seat is installed in the outside of thermocouple, outer fire nozzle seat passes through the air duct and connects outer lane gas pipe, the outside at the ignition needle is installed to interior fire nozzle seat, interior fire nozzle seat passes through the air duct and connects inner circle gas pipe, the burner cover is established at outer fire nozzle seat, interior fire nozzle seat, the thermocouple, the ignition needle, retractable temperature sensor's outside, the periphery at the combustor is established to cast iron support cover, ignition needle and thermocouple all connect the PCB circuit board through the wire.

As an improvement of the invention, the burner comprises an inner ring fire cover, an outer ring fire cover and a gas mixing cabin, wherein the gas mixing cabin is placed on a supporting bottom plate, an outer ring base and an inner ring base are respectively arranged on the gas mixing cabin, a circle of annular air passage is arranged in the outer ring base and the inner ring base, the outer ring fire cover and the inner ring fire cover are respectively clamped and installed on the outer ring base and the inner ring base, a circle of annular air passage and a plurality of fire spraying holes communicated with the annular air passage are arranged in the inner ring fire cover and the outer ring fire cover, an inner ring air inlet and an outer ring air inlet are respectively and correspondingly arranged on the side wall of the gas mixing cabin, the inner ring air inlet is aligned with the inner fire nozzle seat, the outer ring air inlet is aligned with the outer fire nozzle seat, the inner ring air inlet is communicated with the inner ring fire cover.

As an improvement of the invention, a stabilized voltage power supply module, a power supply module, an MCU, an electromagnetic gas valve driving module, an ignition module, a display driving module, a motor driving module, an ignition control module, a temperature control module and a communication module are arranged on the PCB, the input end of the stabilized voltage power supply module is connected with 110V-250V mains supply, the output end of the stabilized voltage power supply module is connected with the power supply module, the power supply module is connected with the MCU, the electromagnetic gas valve driving module, the ignition module, the display driving module, the motor driving module, the ignition control module, the temperature control module, the communication module, a hollow encoder, a display screen, a telescopic temperature sensor and a thermocouple, the electromagnetic gas valve driving module, the ignition module, the display driving module, the motor driving module, the ignition control module, the temperature control module, the communication module and the thermocouple are all connected with, ignition needle and push type switch connection ignition module, display screen connection show drive module, and cavity encoder and retractable temperature sensor connect temperature control module, and motor drive module is connected to the motor, and zero position sensor, angle sensor connect the power control module.

As an improvement of the invention, the cooking range adopts a full upper air inlet structure, and gas is not contacted with air from the inside of the pipeline to the structure of the cooking range body and the pipeline of the cooking range body until the gas mixing cabin of the cooking range is mixed with external air.

Compared with the prior art, the gas stove provided by the invention is an electronic control type gas stove, the whole structure of the gas stove is ingenious in design, the structure is reasonable and stable, the volume is compact, the use is convenient and simple, the electronic knob switch with a cylindrical structure arranged on the panel of the stove body can realize the purposes of pressing, igniting and rotatably adjusting the temperature required to be reached by the bottom of a cooking pot, a display screen is embedded in the middle of the electronic knob switch, the temperature data can be dynamically displayed, and a user can visually know and confirm the numerical value of the adjusted temperature; in addition, due to the special structure of the electronic knob switch, the effect that a built-in display screen is fixed and does not rotate when the electronic knob switch is rotated can be realized, and the electronic knob switch always faces a user so as to achieve the optimal visual effect. In addition, the gas stove adopts a motor airflow valve mechanism comprising an electromagnetic gas valve, an inner ring gas proportional valve, an outer ring gas proportional valve, a motor valve, an inner ring gas pipe, an outer ring gas pipe, a zero position sensor, an angle sensor and a motor, and the MCU of a PCB circuit board and a telescopic temperature sensor are combined to realize accurate adjustment of firepower of an outer ring air passage and an inner ring air passage on a burner of the cooking range, so that the aim of maintaining the temperature required by the bottom of the pan is fulfilled, and the function of preventing the pan from being burnt and overflowing is realized. The range head on the gas stove adopts a full-upper air inlet structure, gas enters the range body from the air inlet main pipe and is not contacted with air through the built-in pipelines of the range body, and the gas is mixed with external air until the gas mixing cabin of the range head, so that the problem of no gas leakage in the range body is effectively avoided, and the use safety of the gas stove is greatly improved. In addition, at the combustor mid-mounting retractable temperature sensor of kitchen range, the bottom of pan can be hugged closely to retractable temperature sensor's top temperature sensing portion, monitors the bottom temperature of the pan of placing on the kitchen range in real time through retractable temperature sensor to in real time to PCB circuit board feedback temperature value, in order to realize intelligent accuse temperature and transfer the function of fiery.

Drawings

Fig. 1 is a front view schematically illustrating a gas range according to a preferred embodiment of the present invention.

Fig. 2 is a side view schematically illustrating a gas range according to a preferred embodiment of the present invention.

Fig. 3 is a schematic structural view of an electronic rotary switch in a gas range according to a preferred embodiment of the present invention.

Fig. 4 is a schematic structural diagram of a hollow encoder according to a preferred embodiment of the present invention.

Fig. 5 is a schematic structural view of an electric motor airflow valve mechanism in a gas range according to a preferred embodiment of the present invention.

Fig. 6 is a schematic view of a connection structure between a motor airflow valve mechanism, a burner and a PCB circuit board in a gas range according to a preferred embodiment of the present invention.

Fig. 7 is a schematic structural view of a burner in a gas range according to a preferred embodiment of the present invention.

In the figure: 1-stove body, 2-stove head, 3-electronic knob switch, 4-protective bottom shell, 5-motor airflow valve mechanism, 6-telescopic temperature sensor, 7-hollow encoder, 8-push switch, 9-hollow knob piece, 10-hollow fixing piece, 11-display screen, 12-transparent cover, 13-hollow connector, 14-fastening piece, 15-fixing base, 16-rotatable outer ring, 17-inner ring, 18-keyhole, 19-chute, 20-inner chute, 21-air inlet main pipe, 22-electromagnetic air valve, 23-inner ring gas proportional valve, 24-outer ring gas proportional valve, 25-inner ring gas pipe, 26-outer ring gas pipe and 27-zero position sensor, 28-angle sensor, 29-motor, 30-inner fire nozzle seat, 31-thermocouple, 33-ignition needle, 34-outer fire nozzle seat, 35-power module, 36-motor driving module, 37-temperature control module, 38-ignition module, 39-MCU, 40-communication module, 41-voltage-stabilized power module, 42-cast iron bracket, 43-inner ring fire cover, 44-outer ring fire cover, 45-gas mixing cabin and 46-water containing plate.

Detailed Description

For a better understanding and appreciation of the invention, it is further described and illustrated below in connection with the accompanying drawings.

As shown in fig. 1 and 2, a knob display anti-burnt and anti-overflow gas cooker according to a preferred embodiment of the present invention includes a cooker body 1, a cooker head 2, an electronic knob switch 3 embedded with a display screen 11, a protective bottom case 4, a PCB circuit board, a motor airflow valve mechanism 5, and a retractable temperature sensor 6, wherein the cooker head 2 and the electronic knob switch 3 are correspondingly installed in installation holes on a panel of the cooker body 1, and the cooker head 2 and the electronic knob switch 3 are arranged in pairs, and can be set as a single cooker head 2 and an electronic knob switch 3, or can be set as a connection of the cooker head 2 and two electronic knob switches 3. The front side and the rear side of the panel bottom of the stove body 1 are respectively arranged on the protection bottom shell 4 and the motor airflow valve mechanism 5, the PCB circuit board is arranged inside the protection bottom shell 4, the PCB circuit board is isolated from the stove body 1 and the stove head 2 through the protection bottom shell 4, and the PCB circuit board is effectively ensured to have good use performance and service life. The electronic knob switch 3 is arranged right above the PCB, and the structural reliability of the electronic knob switch 3 can be effectively guaranteed. Be equipped with inlet manifold 21 on the motor air flow valve mechanism 5, during the gas passes through inlet manifold 21 and inserts motor air flow valve mechanism 5, kitchen range 2 and motor air flow valve mechanism 5 pass through the gas pipeline and connect, and motor air flow valve mechanism 5 can adjust the gas volume that gets into in the kitchen range 2 to the realization is to the firepower size control on the kitchen range 2. Burner central authorities of kitchen range 2 are located in the embedding of retractable temperature sensor 6 to the bottom of pan can be hugged closely to retractable temperature sensor 6's top temperature sensing portion, monitors the bottom temperature of the pan of placing on kitchen range 2 in real time through retractable temperature sensor 6, and feeds back temperature value to the PCB circuit board in real time, in order to realize intelligent accuse temperature and the function of adjusting a fire. The electronic knob switch 3, the motor airflow valve mechanism 5 and the telescopic temperature sensor 6 are all electrically connected with the PCB, and the electronic control function of the gas stove is realized through the PCB.

Wherein, as shown in fig. 3, the electronic rotary switch 3 comprises a hollow encoder 7, a push switch 8, a hollow rotary button 9, a hollow fixing member 10, a display screen 11, and a transparent cover 12, a hollow connector 13 is protruded from the upper portion of the protective bottom case 4, the protective bottom case 4 and the hollow connector 13 are integrally formed, the structural stability is good, the hollow connector 13 is sleeved in a panel hole of the stove body 1 in a penetrating manner, the hollow connector 13 is fixed in a abutting manner with a panel of the stove body 1 through a fastener 14, the fastener 14 is a nut locking structure, thereby fixedly mounting the whole electronic knob switch 3 and the stove body 1, specifically, extending the hollow connector 13 out of the panel hole of the stove body 1, the outer side wall of the extending part of the hollow connector 13 is provided with connecting threads, the fastener 14 is connected with the extending part of the hollow connector 13 in a threaded way, and the lower portion of the fastening member 14 abuts against the surface of the panel of the cooking body 1 positioned at the periphery of the panel hole of the cooking body 1. The mounting structure is simple and reliable, and is easy to disassemble, assemble and maintain. The display screen 11 adopts an OLED display screen, and the OLED display screen is a display screen made of organic electric self-luminous diodes, and has the advantages of simple structure, self-luminous property without a backlight source, small volume, thin thickness, high contrast, wide viewing angle, high reaction speed, wide display temperature range and the like.

In order to improve the compactness, the stability and the reliability and the appearance attractiveness of the mounting structure of the electronic knob switch 3, the height of the fastening piece 14 is consistent with the height of the extending part of the hollow connector 13, after the fastening piece 14 is sleeved in the hollow connector 13, the upper end and the lower end of the fastening piece 14 are parallel and level, and the fastening piece 14 can be abutted against the surface of the panel of the stove body 1, so that the water stain and the oil stain on the stove can be effectively prevented from entering the panel hole to influence the service life of the protective bottom shell 4.

Be equipped with in protection drain pan 4 and hold the chamber, PCB circuit board embedding is installed and is held in the chamber, hollow encoder 7 welds on the PCB circuit board, hollow encoder 7 protrusion in the upper surface of PCB circuit board, and hollow encoder 7's upper portion can just stretch into the inside of hollow connector 13, further carry out spacing fixed to hollow encoder 7 through hollow connector 13, push type switch 8 also welds on the PCB circuit board, and set up push type switch 8 in hollow portion of hollow encoder 7. The lower part of the hollow knob member 9 is fixedly connected with the rotatable outer ring 16 of the hollow encoder 7 after being inserted from the hollow connector 13, so that the rotatable outer ring 16 of the hollow encoder 7 can be driven to rotate together by rotating the hollow knob member 9, and the control signal output of the electronic type electronic knob switch 3 is realized. The upper portion of the hollow fixing piece 10 is connected with the upper portion of the hollow knob piece 9 in a clamping mode, the hollow fixing piece 10 can slide with the hollow knob piece 9 at a certain distance up and down, the hollow fixing piece 10 is sleeved in the hollow portion of the hollow knob piece 9, the hollow fixing piece 10 is arranged in a positioning hole in the middle of the hollow encoder 7, the lower portion of the hollow fixing piece 10 is fixedly connected with an inner ring 17 of the hollow encoder 7, meanwhile, the bottom of the hollow fixing piece 10 is in contact with a contact of the pressing type switch 8, specifically, an elastic contact of the pressing type switch 8 is arranged on the top of the pressing type switch 8 in a protruding mode, the elastic contact is arranged on the pressing type switch 8 through a spring structure, the spring structure has strong elasticity, and the hollow knob piece 9, the hollow fixing piece 10, the display screen 11 and the transparent cover 12 can be kept in a bouncing. The bottom of the hollow fixing piece 10 is set to be a semicircular hollow part and a semicircular non-hollow part, wherein the height of the semicircular hollow part is lower than that of the semicircular non-hollow part, the semicircular hollow part of the hollow fixing piece 10 is further attached to and contacted with the upper surface of the elastic contact of the press type switch 8, and the semicircular non-hollow part of the hollow fixing piece 10 is suspended above the press type switch 8, so that the hollow fixing piece 10 can be pressed simultaneously when the hollow knob piece 9 is pressed, and the elastic contact of the press type switch 8 is pressed downwards at the bottom of the hollow fixing piece 10 to output an ignition signal of the electronic type electronic knob switch 3. Display screen 11 embedding is installed in the display screen 11 mounting groove that is located cavity mounting 10 upper portion, display screen 11 passes through the wire and connects the PCB circuit board, the top of cavity knob spare 9 is located to translucent cover 12 lid, and locate the inside of translucent cover 12 with display screen 11 cover, keep apart the protection through translucent cover 12 to the well kenozooecium and the display screen 11 of cavity knob spare 9, avoid display screen 11 and set up the device that the well kenozooecium in cavity knob spare 9 to receive the pollution of greasy dirt in the air and influence performance and life. During the rotation of the hollow knob member 9, the display screen 11 always faces the transparent cover 12 without rotating together with the transparent cover, so that the display screen 11 can be ensured to have a better data viewing angle.

Further, as shown in fig. 4, the hollow encoder 7 is a hollow shaft encoder, the encoder includes a fixed base 15, a rotatable outer ring 16, and an inner ring 17, a welding pin is disposed on the fixed base 15, the encoder is welded on the PCB through the welding pin, the rotatable outer ring 16 is rotatably mounted on the fixed base 15, the rotatable outer ring 16 and the welding pin on the fixed base 15 have an electrical connection relationship, the inner ring 17 is fixedly mounted on the fixed base 15, the inner ring 17 and the welding pin on the fixed base 15 are in an insulating relationship, and the inner ring 17 is disposed on the inner side of the rotatable outer ring 16. The rated voltage of the encoder is DC 5V, and the rotating life of the rotatable outer ring 16 can reach more than 50000 times.

In order to facilitate the installation and fixation between the hollow knob member 9 and the hollow fixing member 10 and the hollow encoder 7, a plurality of sliding grooves 19 and a plurality of locking holes 18 are arranged on the outer side wall of the rotatable outer ring 16, a plurality of inner side sliding grooves 20 are arranged on the inner side wall of the inner ring 17, correspondingly, a track and a buckle which are matched with the sliding grooves 19 and the locking holes 18 are arranged on the inner side wall of the hollow knob member 9, the hollow knob member 9 is in butt joint fixation with the sliding grooves 19 and the locking holes 18 of the rotatable outer ring 16 through the track and the buckle, a locking structure is formed, and the hollow knob member 9 can rotate along with the rotatable outer ring 16 of the hollow encoder 7. The outer side wall of the hollow fixing piece 10 is provided with a track matched with the inner side sliding groove 20 of the inner ring 17, the hollow fixing piece 10 is clamped and fixed with the inner side sliding groove 20 of the inner ring 17 through the track, and the hollow fixing piece 10 can slide up and down in the inner side sliding groove 20 of the inner ring 17 and cannot rotate.

Furthermore, the upper part of the hollow knob member 9 protrudes downwards to extend an outer cover, the outer cover can wrap the fastener 14, the outer cover can play a role in isolating and protecting the fastener 14, and the outer attractiveness of the knob device can be improved. In addition, the height of the extension cover is at least 3/4-4/5 of the height of the fastening piece 1410, so as to ensure that most of the exposed surface of the fastening piece 14 can be covered by the extension cover, and when the knob device is used, the extension cover can be used for covering the fastening piece 14 integrally, thereby effectively improving the appearance aesthetic property of the knob device. In addition, to reduce frictional resistance between the outer mantle and the contact portions of the fastener 14 and the hollow connector 13 during rotation of the hollow knob member 9, a cushion or sealing washer is provided between the outer mantle and the contact portions of the fastener 14 and the hollow connector 13.

Furthermore, a support part is protruded and extended upwards at the top of the outer extension cover, the transparent cover 12 is fixedly connected with the support part, and particularly, the transparent cover 12 and the support part of the hollow knob member 9 can be fixed in a threaded connection or clamping connection mode. The transparent cover 12 is of a structure with a concave middle part, so that not only is the content displayed on the internal display screen 11 convenient to watch, but also the content is convenient to hold by fingers. The inner side of the supporting part is provided with a lower hanging lug with an upward direction, the outer side of the upper part of the hollow fixing part 10 is provided with an upper hanging lug with a downward direction, the lower end of the lower hanging lug is flush with the upper end of the upper hanging lug, the lower hanging lug and the upper hanging lug are arranged in pairs, the number of the lower hanging lug and the number of the upper hanging lug are at least 2 pairs, the upper hanging lug and the lower hanging lug are connected in a clamping manner to form a hanging lug connecting structure, so that the hollow knob part 9 and the hollow fixing part 10 are in limited connection, and the hollow fixing part 10 and the hollow knob part 9 can slide up and down together.

As shown in fig. 5 and 6, the motor airflow valve mechanism 5 includes an air inlet main 21, a valve body, and an electromagnetic air valve 22, an inner ring gas proportional valve 23, an outer ring gas proportional valve 24, a motor valve, an inner ring gas pipe 25, an outer ring gas pipe 26, a zero position sensor 27, an angle sensor 28 and a motor 29 which are arranged on the valve body in pairs, the air inlet main 21 is arranged at an air inlet of a main gas circuit inside the valve body, an air inlet of the electromagnetic air valve 22 is connected to an air outlet of the main gas circuit, an air outlet of the electromagnetic air valve 22 is connected to an inner ring gas circuit and an outer ring gas circuit through the inner ring gas proportional valve 23 and the outer ring gas proportional valve 24 respectively, the inner ring gas circuit and the outer ring gas circuit are both connected to the inner ring gas pipe 25 and the outer ring gas pipe 26 through the motor valve, the motor valve is connected to a rotating shaft of the motor 29 in a transmission manner, when, the flow rate of gas or the pressure of gas delivered to the burner 2 is changed to adjust the amount of fire on the burner 2. The zero position sensor 27 and the angle sensor 28 are arranged on the rotating part of the motor valve, and the electromagnetic air valve 22, the zero position sensor 27, the angle sensor 28 and the motor 29 are all connected with a PCB circuit board through leads.

The gas is controlled by the electromagnetic gas valve 22 and then divided into inner ring gas and outer ring gas, the inner ring gas passes through the inner ring gas proportional valve 23 and then is controlled by the motor valve to be quantitative and then reaches the inner ring gas pipe 25, and finally reaches the inner ring of the cooking range 2 to form inner ring flame. Similarly, the outer ring fuel gas passes through the outer ring fuel gas proportional valve 24, is controlled by the motor valve to be quantitative, then reaches the outer ring fuel gas pipe 26, and finally reaches the outer ring of the cooking range 2 to form outer ring flame. The gas passing through is controlled by a motor valve linked with the motor 29. The control of the motor 29 is integrally adjusted and controlled by the zero position sensor 27 and the angle sensor 28 in cooperation with the MCU39 of the PCB, when the motor is powered on for the first time, the motor 29 rotates because the current angle between the motor 29 and the motor valve cannot be judged, when the motor 29 rotates to a certain angle and the zero position sensor 27 is triggered, the motor 29 stops, and the zero position sensor 27 sends a zero position signal to inform the MCU39 that the position of the motor 29 is at the moment. The MCU39 controls the motor 29 to rotate continuously according to the position and the angle information fed back from the angle sensor 28 during rotation, so as to control the angle of the motor valve.

Preferably, the motor 29 is a stepping motor 29, the electromagnetic air valve 22 is a self-priming electromagnetic valve, the motor valve is a plug valve, an air outlet of the self-priming electromagnetic valve is communicated with the plug valve through an inner ring gas proportional valve 23 and an outer ring gas proportional valve 24, a valve rod shaft of the plug valve is directly connected with a rotating shaft of the stepping motor 29 through a shaft, and the zero position sensor 27 and the angle sensor 28 are both arranged on the valve rod shaft of the plug valve.

It is further preferable that the zero position sensor 27 includes a static metal needle and a moving metal needle, the static metal needle is fixedly installed on a valve rod shaft of the stopcock, the moving metal needle can rotate along with the valve rod shaft of the stopcock, and the static metal needle can contact with the moving metal needle during the rotation of the moving metal needle, and a zero position signal is output when the static metal needle contacts with the moving metal needle.

Retractable temperature sensor 6 includes the sensor body, thermal-insulated dustcoat, a spring, support and ceramic base, the top of sensor body is equipped with temperature sensing portion, thermal-insulated dustcoat can dismantle the cover and establish the outside at the sensor body, the temperature sensing portion of sensor body can the activity run through the top of thermal-insulated dustcoat and make the top of temperature sensing portion protrusion thermal-insulated cover, thermal-insulated dustcoat passes through support and ceramic base fixed connection, spring coupling ceramic base is passed through to the bottom of sensor body, the spring sets up the well kenozooecium at the support, the free reciprocating stroke that is greater than 10mm has between sensor body and the ceramic base, the sensor body can slide from top to bottom for ceramic base.

The sensor body is characterized in that a space is arranged between the outer peripheral surface of the sensor body and the outer wall of the heat insulation outer cover to form a heat insulation cavity, the heat insulation outer cover is a cylindrical cover body with an opening facing downwards, the sensor body is favorable for rapid heat dissipation, the support is installed on the inner side wall of the cylindrical cover body, a through hole is formed in the top of the heat insulation outer cover, and a tight fit is formed between the outer peripheral surface of the temperature sensing part of the sensor body and. The sensor body comprises a heat collecting plate, a temperature sensor and a shell, the temperature sensor is arranged inside the shell, the heat collecting plate is arranged at the top end of the shell to form a temperature sensing part and clings to the temperature measuring part of the temperature sensor, the bottom end of the shell is connected with a spring, and the temperature sensor is connected with a PCB circuit board through a wire.

When the pot is placed on the cooking top 2, the temperature sensor is directly contacted with the bottom of the pot because of the support of the temperature sensor. Meanwhile, the spring is arranged in the support, so that when the pot is put down, the temperature sensor can be pressed down, the pot bottom cannot be blocked, and the temperature sensor can be tightly attached to the pot bottom all the time.

As shown in fig. 6 and 7, the cooking range 2 includes a supporting base plate, a cast iron bracket 42, a burner, a thermocouple 31, an ignition needle 33, an outer flame nozzle holder 34, and an inner flame nozzle holder 30, the supporting base plate is embedded in a mounting hole mounted on a panel of the range body 1, the retractable temperature sensor 6 is fixedly mounted in the middle of the supporting base plate, the thermocouple 31 and the ignition needle 33 are fixedly mounted on both sides of the retractable temperature sensor 6, the outer flame nozzle holder 34 is mounted on the outer side of the thermocouple 31, the outer flame nozzle holder 34 is connected to the outer ring gas pipe 26 through a gas pipe, the inner flame nozzle holder 30 is mounted on the outer side of the ignition needle 33, the inner flame nozzle holder 30 is connected to the inner ring gas pipe 25 through a gas pipe, the burner is sleeved on the outer flame nozzle holder 34, the inner flame nozzle holder 30, the thermocouple 31, the ignition needle 33, and the retractable temperature sensor 6, the cast, the ignition needle 33 and the thermocouple 31 are connected with a PCB through leads. The thermocouple 31 and the electromagnetic gas valve 22 jointly form a flameout protection device of the gas stove (flameout protection is a protection function that the gas stove can automatically cut off a gas source when flame is extinguished), the thermocouple 31 is used for flame detection, and when the flame temperature detected by the thermocouple 31 is lower than a specific temperature, the electromagnetic gas valve 22 is immediately closed through a PCB (printed circuit board) to realize flameout protection, so that the function of cutting off gas and preventing leakage is realized when accidental flameout is realized. The general flameout protection time of the flameout protection device is about 10 seconds, the structure is simple and reliable, the service performance is stable, and the service life is long.

Further, the combustor includes inner ring fire lid 43, outer ring fire lid 44, gas mixing cabin 45, and gas mixing cabin 45 places on supporting baseplate, sets up outer ring base and inner ring base respectively on gas mixing cabin 45, sets up the cyclic annular air flue of round in outer ring base and the inner ring base, and outer ring fire lid 44 and inner ring fire lid 43 are blocked respectively to establish and are installed on outer ring base and inner ring base, and interior ring fire lid 43 and outer ring fire lid 44 have seted up the cyclic annular air flue of round and have been linked together with cyclic annular air flue a plurality of flame projecting hole. An inner ring air inlet and an outer ring air inlet are respectively and correspondingly arranged on the side wall of the gas mixing chamber 45, the inner ring air inlet is aligned with the inner fire nozzle seat 30, the outer ring air inlet is aligned with the outer fire nozzle seat 34, the inner ring air inlet is communicated with the inner ring fire cover 43, and the outer ring air inlet is communicated with the outer ring fire cover 44. The annular air passages on the outer ring fire cover 44 and the inner ring fire cover 43 respectively form an annular air chamber with the annular air passages on the outer ring base and the inner ring base, and the annular air chamber is used for uniformly distributing gas to each fire jetting hole.

In addition, the cooking range 2 further comprises a water containing disc 46, the water containing disc 46 is embedded in a mounting hole on the panel of the cooking range body 1, the water containing disc 46 is arranged on the periphery of the supporting bottom plate, and liquid flowing out when the pot overflows can be collected in the water containing disc 46. The middle part of the water containing disc 46 is provided with a mounting hole, and the supporting bottom plate is embedded in the mounting hole.

In addition, the cooking range 2 adopts a full-upper air inlet structure, and gas enters the cooking range body 1 from the air inlet main pipe 21 and is not contacted with air through a pipeline arranged in the cooking range body 1 until the gas mixing cabin 45 of the cooking range 2 is mixed with external air. The structure meets the design requirement that no gas is leaked in the stove body 1, and the safety of the PCB serving as the whole control circuit of the gas stove in use in the stove body is further improved.

The PCB is provided with a stabilized voltage power supply module 41, a power supply module 35, an MCU39, an electromagnetic gas valve driving module, an ignition module 38, a display driving module, a motor driving module 36, a fire control module, a temperature control module 37 and a communication module 40, wherein the input end of the stabilized voltage power supply module 41 is connected with 110V-250V mains supply, the stabilized voltage power supply module 41 adopts a stabilized voltage switch power supply and can convert the 110V-250V mains supply into voltage and current of the grade required by the power supply module 35, the output end of the stabilized voltage power supply module 41 is connected with the power supply module 35, the power supply module 35 is connected with the MCU39, the electromagnetic gas valve driving module, the ignition module 38, the display driving module, the motor driving module 36, the fire control module, the temperature control module 37, the communication module 40, a hollow encoder 7, a display screen 11, a, The ignition module 38, the display driving module, the motor driving module 36, the fire control module, the temperature control module 37, the communication module 40 and the thermocouple 31 are all connected with the MCU39, the electromagnetic air valve 22 is connected with the electromagnetic air valve driving module, the ignition needle 33 and the push switch 8 are connected with the ignition module 38, and the ignition module 38 adopts a pulse type ignition circuit. The display screen 11 is connected with a display driving module, the hollow encoder 7 and the telescopic temperature sensor 6 are connected with a temperature control module 37, the motor 29 is connected with a motor driving module 36, and the zero position sensor 27 and the angle sensor 28 are connected with a fire control module. The mobile terminal (such as a mobile phone, IPad, etc.) can establish a communication connection with the MCU39 through the communication module 40, thereby implementing a remote control function of the gas range.

The anti-paste and anti-overflow function of the gas stove is realized by a PCB (printed Circuit Board), a retractable temperature sensor 6 and a motor airflow valve mechanism 5 together, after a temperature value is set through the PCB, the temperature in the pot is monitored by the retractable temperature sensor 6 and fed back to the MCU39 on the PCB, the temperature in the pot is judged to be overhigh or overlow compared with the set temperature, and then the motor airflow valve mechanism 5 is controlled to correspondingly reduce or increase the gas flow so as to achieve the purpose of maintaining the temperature.

When the electronic knob switch 3 is pressed for a plurality of seconds (the child lock is released), an ignition signal is sent, the ignition needle 33 starts to ignite, when the electronic knob switch 3 is not loosened, the electronic knob switch 3 is rotated to a required temperature value and then the loosening is confirmed, at the moment, the telescopic temperature sensor 6 starts to detect the temperature, when the temperature does not reach the required temperature value, the motor airflow valve mechanism 5 opens the airflow, the motor airflow valve mechanism 5 and the MCU39 of the PCB correspondingly adjust the size of the gas airflow according to the difference of the temperature, when the detected temperature value is fast to the set temperature value, the motor airflow valve mechanism 5 reduces the airflow, the airflow is reduced along with the continuous approaching of the temperature, the flame is reduced along with the reduction, and finally the temperature maintaining effect is achieved, so that the anti-overflow function is realized.

By using the gas stove shown in the preferred embodiment, the temperature required by the cooker can be directly set through the electronic knob opening, for example, the egg frying temperature is 80 ℃, the fire power emitted by the cooking range can maintain the temperature after the temperature is set, and the fried egg cannot be burnt. If no-man operation occurs, the water content in the pot is reduced to cause the temperature to rise, and the flame on the cooking range can be automatically reduced until the fire is turned off, so as to achieve the effect of no burning. In the same way, the soup can be controlled not to reach the boiling point, and the purpose of no overflow can be realized. In addition, because the temperature is controlled to be lower, the generated oil smoke amount is greatly reduced, and the cancer substances generated only by high-temperature oil are almost eliminated, so that the healthy diet of users is increased.

The technical means disclosed in the invention scheme are not limited to the technical means disclosed in the above embodiments, but also include the technical scheme formed by any combination of the above technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and such improvements and modifications are also considered to be within the scope of the present invention.

Claims

1. The utility model provides a knob shows prevents that burnt anti-overflow formula gas-cooker which characterized in that: comprises a stove body, a stove head, an electronic knob switch embedded with a display screen, a protective bottom shell, a PCB circuit board, a motor airflow valve mechanism and a telescopic temperature sensor, wherein the stove head and the electronic knob switch are correspondingly arranged in an installation hole position on a panel of the stove body, the protective bottom shell and the motor airflow valve mechanism are respectively arranged at the front side and the rear side of the bottom of the cooker body panel, the PCB circuit board is arranged in the protective bottom shell, the electronic knob switch is arranged right above the PCB circuit board, the cooker head is connected with the motor airflow valve mechanism through the air guide pipeline, the motor airflow valve mechanism is provided with an air inlet main pipe, the telescopic temperature sensor is embedded in the center of a burner arranged on the cooker head, and the top temperature sensing part of the telescopic temperature sensor can be tightly attached to the bottom of the cooker, and the electronic knob switch, the motor airflow valve mechanism and the telescopic temperature sensor are electrically connected with the PCB.

2. The gas cooker as claimed in claim 1, wherein the electronic knob switch comprises a hollow encoder, a pressing switch, a hollow knob member, a hollow fixing member, a display screen and a transparent cover, the upper portion of the protective bottom case is protruded with a hollow connector, the hollow connector is penetrated through a panel hole of the cooker body, the hollow connector is fixedly connected with the panel of the cooker body through a fastener, a receiving cavity is formed in the protective bottom case, a PCB circuit board is installed in the receiving cavity, the hollow encoder is welded on the PCB circuit board, the upper portion of the hollow encoder extends into the hollow connector, the pressing switch is disposed on the PCB circuit board in the hollow portion of the hollow encoder, the lower portion of the hollow knob member is fixedly connected with the rotatable outer ring of the hollow encoder after being inserted into the hollow connector, the upper portion of the hollow knob member is protruded downward with an extension cover, the fastener can be wrapped up to the epitaxial shroud, the well kenozooecium of cavity knob spare is located to the cavity mounting, the upper portion of cavity mounting is connected with the upper portion joint of cavity knob spare, the lower part of cavity mounting and the inner circle fixed connection of cavity encoder, the bottom of cavity mounting contacts with the elastic contact of push type switch, the display screen is installed in the display screen mounting groove that is located cavity mounting upper portion, the display screen passes through the wire and connects the PCB circuit board, the top of cavity knob spare is located to the translucent cover, and locate the inside of translucent cover with the display screen cover, the display screen is all the time just facing the translucent cover.

3. The knob display anti-paste anti-overflow gas cooker as claimed in claim 2, wherein said hollow encoder comprises a fixed base, a rotatable outer ring, an inner ring, the rotatable outer ring is rotatably arranged on the fixed base, the inner ring is fixedly arranged on the fixed base, and the inner ring is arranged on the inner side of the rotatable outer ring, be equipped with a plurality of spouts and keyhole on the lateral wall of rotatable outer lane, be equipped with a plurality of inboard spouts on the inside wall of inner circle, be equipped with track and the buckle with spout and keyhole looks adaptation on the inside wall of cavity knob spare, cavity knob spare is through track and buckle and rotatable outer lane's spout and keyhole butt joint fixed, cavity knob spare can rotate along with the rotatable outer lane of cavity encoder, be equipped with the track with the inboard spout looks adaptation of inner circle on the lateral wall of cavity mounting, the cavity mounting carries out the joint through the inboard spout of track with the inner circle and fixes.

4. The gas cooker as claimed in claim 3, wherein the top of the outer cover is protruded upward to form a support, the transparent cover is fixedly connected to the support, the inner side of the support is provided with a lower hanging lug facing upward, the outer side of the upper portion of the hollow fixing member is provided with an upper hanging lug facing downward, the upper hanging lug and the lower hanging lug are connected in a snap-fit manner to limit the hollow knob member and the hollow fixing member, and the hollow fixing member and the hollow knob member can slide up and down together.

5. The gas cooker with knob display for preventing paste and overflow as claimed in any one of claims 1-4, wherein the motor airflow valve mechanism comprises a gas inlet main pipe, a valve body, and an electromagnetic gas valve, an inner ring gas proportional valve, an outer ring gas proportional valve, a motor valve, an inner ring gas pipe, an outer ring gas pipe, a zero position sensor, an angle sensor and a motor arranged on the valve body, the gas inlet main pipe is arranged at the gas inlet of a main gas circuit inside the valve body, the gas inlet of the electromagnetic gas valve is connected to the gas outlet of the main gas circuit, the gas outlet of the electromagnetic gas valve is respectively connected to the inner ring gas circuit and the outer ring gas circuit through the inner ring gas proportional valve and the outer ring gas proportional valve, the inner ring gas circuit and the outer ring gas circuit are both connected to the inner ring gas pipe and the outer ring gas pipe through the motor valve, the motor valve is in transmission connection with the rotating, the electromagnetic air valve, the zero position sensor, the angle sensor and the motor are all connected with the PCB through leads.

6. The gas stove with the anti-burnt and anti-overflowing knob display as claimed in any one of claims 1 to 5, wherein the retractable temperature sensor comprises a sensor body, a heat-insulating outer cover, a spring, a support and a base, a temperature sensing part is arranged at the top end of the sensor body, the heat-insulating outer cover is detachably covered outside the sensor body, the temperature sensing part of the sensor body can movably penetrate through the top of the heat-insulating outer cover to enable the temperature sensing part to protrude out of the top of the heat-insulating outer cover, the heat-insulating outer cover is fixedly connected with the base through the support, the bottom end of the sensor body is connected with the base through the spring, the spring is arranged in a hollow part of the support, and a free reciprocating stroke greater than 10.

7. The knob-displayed anti-burnt and anti-overflow gas cooker as claimed in any one of claims 1 to 6, wherein the burner comprises a supporting base plate, a cast iron bracket, a burner, a thermocouple, an ignition needle, an outer flame nozzle holder, and an inner flame nozzle holder, the supporting base plate is embedded in a mounting hole mounted on a panel of the cooker body, the retractable temperature sensor is fixedly mounted in the middle of the supporting base plate, the thermocouple and the ignition needle are fixedly mounted on both sides of the retractable temperature sensor, the outer flame nozzle holder is mounted on the outer side of the thermocouple, the outer flame nozzle holder is connected to an outer ring gas pipe through a gas pipe, the inner flame nozzle holder is mounted on the outer side of the ignition needle, the inner flame nozzle holder is connected to an inner ring gas pipe through a gas pipe, the burner is sleeved on the outer flame nozzle holder, the inner flame nozzle holder, the thermocouple, the ignition needle, and the retractable temperature sensor, the cast iron bracket is, the ignition needle and the thermocouple are both connected with the PCB through leads.

8. The gas cooker with knob display for preventing paste and overflow as claimed in claim 7, the burner comprises an inner ring fire cover, an outer ring fire cover and a gas mixing cabin, the gas mixing cabin is arranged on a supporting bottom plate, an outer ring base and an inner ring base are respectively arranged on the gas mixing cabin, a circle of annular air passage is arranged in the outer ring base and the inner ring base, an outer ring fire cover and an inner ring fire cover are respectively clamped and arranged on the outer ring base and the inner ring base, a circle of annular air passage and a plurality of fire spraying holes communicated with the annular air passage are arranged in the inner ring fire cover and the outer ring fire cover, the side wall of the gas mixing cabin is respectively provided with an inner ring gas inlet and an outer ring gas inlet correspondingly, the inner ring gas inlet is aligned with the inner fire nozzle seat, the outer ring gas inlet is aligned with the outer fire nozzle seat, and the inner ring air inlet is communicated with the inner ring fire cover, and the outer ring air inlet is communicated with the outer ring fire cover.

9. The gas cooker with knob display for preventing paste and overflow as claimed in any one of claims 1-7, wherein the PCB circuit board is provided with a stabilized voltage power supply module, a power supply module, an MCU, an electromagnetic gas valve driving module, an ignition module, a display driving module, a motor driving module, a fire control module, a temperature control module and a communication module, wherein the input end of the stabilized voltage power supply module is connected with 110V-250V mains supply, the output end of the stabilized voltage power supply module is connected with the power supply module, the power supply module is connected with the MCU, the electromagnetic gas valve driving module, the ignition module, the display driving module, the motor driving module, the fire control module, the temperature control module, the communication module, the hollow encoder, the display screen, the retractable temperature sensor, the thermocouple, the electromagnetic gas valve driving module, the ignition module, the display driving module, the motor driving, MCU is all connected to temperature control module, communication module and thermocouple, and electromagnetism pneumatic valve drive module is connected to the electromagnetism pneumatic valve, and ignition needle and push type switch connect ignition module, and display drive module is connected to the display screen, and temperature control module is connected to cavity encoder and retractable temperature sensor, and motor drive module is connected to the motor, and zero position sensor, angle sensor connect the power control module.

10. The knob display anti-burnt anti-overflow gas range as claimed in any one of claims 1 to 9, wherein the burner adopts a full upper air intake structure.