WO2022205825A1 - 一种微波发生电路及微波发生装置 - Google Patents
一种微波发生电路及微波发生装置 Download PDFInfo
- Publication number
- WO2022205825A1 WO2022205825A1 PCT/CN2021/122198 CN2021122198W WO2022205825A1 WO 2022205825 A1 WO2022205825 A1 WO 2022205825A1 CN 2021122198 W CN2021122198 W CN 2021122198W WO 2022205825 A1 WO2022205825 A1 WO 2022205825A1
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- Prior art keywords
- chip
- microwave
- operational amplifier
- power supply
- field effect
- Prior art date
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- 230000005669 field effect Effects 0.000 claims description 54
- 239000003990 capacitor Substances 0.000 claims description 21
- 241001125929 Trisopterus luscus Species 0.000 claims description 6
- 230000006641 stabilisation Effects 0.000 claims 3
- 238000011105 stabilization Methods 0.000 claims 3
- 230000000087 stabilizing effect Effects 0.000 abstract description 5
- 230000003321 amplification Effects 0.000 abstract 5
- 238000003199 nucleic acid amplification method Methods 0.000 abstract 5
- 239000003571 electronic cigarette Substances 0.000 description 92
- 239000000523 sample Substances 0.000 description 47
- 238000010438 heat treatment Methods 0.000 description 14
- 238000000034 method Methods 0.000 description 11
- 235000019504 cigarettes Nutrition 0.000 description 10
- 239000004020 conductor Substances 0.000 description 10
- 239000000779 smoke Substances 0.000 description 10
- 230000001276 controlling effect Effects 0.000 description 8
- 238000010586 diagram Methods 0.000 description 8
- 241000208125 Nicotiana Species 0.000 description 7
- 235000002637 Nicotiana tabacum Nutrition 0.000 description 7
- 238000009434 installation Methods 0.000 description 6
- 230000000391 smoking effect Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 230000005855 radiation Effects 0.000 description 4
- 239000003381 stabilizer Substances 0.000 description 4
- 230000006378 damage Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000000796 flavoring agent Substances 0.000 description 1
- 235000019634 flavors Nutrition 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
- A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
- A24F40/40—Constructional details, e.g. connection of cartridges and battery parts
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
- A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
- A24F40/40—Constructional details, e.g. connection of cartridges and battery parts
- A24F40/46—Shape or structure of electric heating means
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/64—Heating using microwaves
- H05B6/66—Circuits
Definitions
- the invention belongs to the field of microwave circuits, in particular to a microwave generating circuit and a microwave generating device.
- HNB electronic cigarette is a smoking device designed with the concept of "heat not burn”. Compared with traditional cigarettes, the working temperature of HNB electronic cigarettes is much lower than that of traditional cigarettes. The electronic cigarette only heats the tobacco leaves, so that the tobacco leaves emit tobacco flavor to meet the needs of users. The working temperature of heat-not-burn electronic cigarettes is usually in the range of 250°C to 350°C, and the tobacco leaves will not burn when the temperature is lower than 350°C, avoiding the generation of harmful substances produced when traditional cigarettes are burned, and will not form in the air. Secondhand smoke reduces the harm to the surrounding people.
- An existing heat-not-burn electronic cigarette is provided with a microwave radio frequency circuit, which emits microwaves through the microwave radio frequency circuit, and heats the tobacco medium with the microwaves to generate smoke.
- the power supply voltage of the existing microwave radio frequency circuit is relatively high, and a booster circuit is required to use a battery for power supply, resulting in a larger volume of discrete components, increasing the volume of the electronic cigarette, and being inconvenient for users to use.
- the present invention has been made in view of this.
- the technical problem to be solved by the present invention is to overcome the deficiencies of the prior art, and to provide a microwave generating circuit and a microwave generating device, which can adjust the output microwave power, frequency and duty ratio and reduce the power supply voltage of the microwave generating circuit.
- a microwave generating circuit includes a power supply circuit, a first operational amplifier circuit, a second operational amplifier circuit, a single-chip microcomputer U4, a microwave chip U6 and a power drive circuit.
- An operational amplifier circuit is connected to the gate voltage pin Vg of the microwave chip U6, the second output end of the power circuit is connected to the input port VCC of the single-chip microcomputer U4, and the output port DAC of the single-chip microcomputer U4 is connected to the microwave chip U6 through the second operational amplifier circuit.
- the tuning voltage pin Vt, the output port IO1 of the microcontroller U4 is connected to the enable voltage pin En of the microwave chip U6 and the drain voltage pin Vd of the microwave chip U6 through the power drive circuit.
- the first operational amplifier circuit includes a first operational amplifier U3, the non-inverting input terminal of the first operational amplifier U3 is connected to the first output terminal of the power supply circuit through a resistor R5, and the inverting input terminal of the first operational amplifier U3 is connected to the first operational amplifier U3.
- the output end of the amplifier U3 is connected, and the output end of the first operational amplifier U3 is connected to the gate voltage pin Vg of the microwave chip U6.
- the non-inverting input terminal of the first operational amplifier U3 is grounded through a resistor R6, and the output terminal of the first operational amplifier U3 is grounded through a capacitor C5.
- the second operational amplifier circuit includes a second operational amplifier U5, the non-inverting input terminal of the second operational amplifier U5 is connected to the output port DAC of the microcontroller U4 through the resistor R7, and the inverting input terminal of the second operational amplifier U5 is grounded through the resistor R1 , the inverting input terminal of the second operational amplifier U5 is connected to the output terminal of the second operational amplifier U5 through the resistor R2, and the output terminal of the second operational amplifier U5 is connected to the tuning voltage pin Vt of the microwave chip U6.
- the positive pole of the power supply of the second operational amplifier U5 is connected to the power supply unit, the negative pole of the power supply of the second operational amplifier U5 is grounded, the output end of the second operational amplifier U5 is grounded through the capacitor C6, and the output port DAC of the single-chip microcomputer U4 is grounded through the resistor R8.
- the power driving circuit includes a first field effect transistor Q1 and a second field effect transistor Q2, the source of the first field effect transistor Q1 is connected to the power supply unit, and the gate of the first field effect transistor Q1 is connected to the second field effect transistor
- the drain of the transistor Q2, the drain of the first field effect transistor Q1 is connected to the drain voltage pin Vd of the microwave chip U6, the gate of the second field effect transistor Q2 is connected to the output port IO1 of the microcontroller U4, the second field effect transistor
- the source of the transistor Q2 is grounded.
- the source of the first field effect transistor Q1 is connected to the gate of the first field effect transistor Q1 via a resistor R3, and the source of the second field effect transistor Q2 is connected to the gate of the second field effect transistor Q2 via a resistor R4 , the drain of the first field effect transistor Q1 is grounded through the capacitor C7.
- the power supply circuit includes a voltage stabilizing chip U1 and a negative pressure chip U2, the input end of the voltage stabilizing chip U1 is connected to the power supply unit, the input end of the voltage stabilizing chip U1 is grounded through the capacitor C1, and the output end of the voltage stabilizing chip U1 is connected to the negative voltage
- the input end of the chip U2 is grounded through the capacitor C3, and the output end of the negative pressure chip U2 is grounded through the capacitor C4.
- the microwave chip U6 includes a voltage controlled oscillator VCO, a low noise amplifier, a first power amplifier and a second power amplifier connected in sequence, and the first power amplifier and the second power amplifier are synthesized by a lange bridge.
- Another object of the present invention is to provide a microwave generating device, comprising a battery and a microstrip line, having a microwave generating circuit as described in any one of claims 1-9 above, and the battery is used as a power supply unit of the microwave generating circuit,
- the microstrip line is connected to the radio frequency output pin POUT of the microwave chip U6 in the microwave generating circuit.
- the present invention has the following beneficial effects compared with the prior art.
- the voltage of the power supply unit is regulated by the power supply circuit, so that the output voltage of the power supply circuit conforms to the working voltage of the single-chip microcomputer, so as to ensure the normal operation of the single-chip microcomputer, and the control program parameters of the single-chip microcomputer are adjusted to control the output voltage of the single-chip microcomputer, thereby
- the output power, output frequency and duty cycle of the microwave chip can be adjusted, and finally microwaves with adjustable frequency and adjustable power within the specified frequency range are output.
- FIG. 1 is a schematic structural diagram of an electronic heating cigarette set of the present invention
- FIG. 2 is a schematic structural diagram of a charging device and an electronic cigarette in an electronic heating cigarette set according to the present invention
- FIG. 3 is a schematic structural diagram of a circuit board and a charging probe in an electronic heating smoking device of the present invention
- FIG. 4 is a schematic diagram of the installation of the first magnet and the third magnet in an electronic heating smoking device of the present invention
- FIG. 5 is a schematic diagram of the installation of the second magnet and the fourth magnet in an electronic heating smoking device of the present invention
- FIG. 6 is a schematic diagram of the structure of a microwave antenna of the present invention.
- FIG. 7 is an exploded view of a microwave antenna of the present invention.
- Fig. 8 is a schematic diagram of the structure of three different conductor patches in a microwave antenna of the present invention.
- FIG. 9 is a schematic diagram of a microwave generating circuit of the present invention.
- 101 base; 102, radiation part; 103, microstrip feeder; 104, sleeve; 105, fixed rod; 106, conductor patch; 107, patch body; 108, first connection part; 109, fan ring; 110, upper fan ring; 111, lower fan ring; 112, plug; 201, electronic cigarette; 202, second side plate; 203, charging device; 204, first shell; 205, first side plate; 206, protruding part; 207, first magnet; 208, second housing; 209, third magnet; 210, charging probe; 211, second connecting part; 212, protruding part; 213, through hole; 214 , charging interface; 215, circuit board; 216, second magnet; 217, fourth magnet.
- the embodiment of the present invention introduces a split-type electronic heating smoking device, which includes an electronic cigarette 201 and a charging device 203 for charging the electronic cigarette 201 .
- Probe 210 the charging probe 210 extends from the inside of the charging device 203 to the outside of the charging device 203, the electronic cigarette 201 is provided with a charging interface 214 adapted to the charging probe 210, and the charging probe 210 is detachably electrically connected to the charging interface 214 .
- the charging probe 210 is provided on the charging device 203, and the electronic cigarette 201 is provided with a charging interface 214 adapted to the charging probe 210.
- the electronic cigarette 201 is connected to the charging In the device 203 , the charging probe 210 is inserted into the charging interface 214 , and the charging device 203 charges the electronic cigarette 201 through the charging probe 210 .
- the user only needs to insert the charging probe 210 on the charging device 203 into the charging interface 214 on the electronic cigarette 201 , and can easily use the charging device 203 to charge the electronic cigarette 201 .
- 201 can be removed from the charging device 203, no unnecessary operations are required, and it is convenient for users to use.
- the charging device 203 includes a first casing 204 arranged vertically, and a first side plate 205 is disposed on the side of the first casing 204 facing the electronic cigarette 201 .
- the side plate 205 is a vertically extending semi-circular arc plate, and the arc surface of the first side plate 205 is disposed toward the inner side of the first casing 204 .
- the first side plate 205 is provided with a through hole 213 , and the charging probe 210 passes through the through hole 213 and is connected to the circuit board 215 disposed inside the charging device 203 .
- the electronic cigarette 201 is provided with a second side plate 202 which is matched with the first side plate 205 on the side facing the first casing 204 , the second side plate 202 is a vertically extending arc-shaped plate, and the arc-shaped second side plate 202 is The charging interface 214 is disposed on the second side plate 202 so as to face the first side plate 205 .
- the side of the charging device 203 facing the electronic cigarette 201 is arranged as an arc-shaped plate, and the side of the electronic cigarette 201 facing the first housing 204 is arranged as an arc-shaped plate.
- the structure installs the electronic cigarette 201 on the charging device 203 , which has a positioning effect, and can easily insert the charging probe 210 into the charging interface 214 .
- the bottom of the first side plate 205 is provided with a second casing 208 extending horizontally toward the outside of the first casing 204 , and the electronic cigarette 201 is installed on the top of the second casing 208 .
- the second casing 208 is disposed at the bottom of the first side plate 205, and the second casing 208 extends horizontally toward the outside of the first casing 204.
- the charging probe 210 is inserted into the charging interface 214.
- the first side plate 205 of the charging device 203 is attached to the second side plate 202 of the electronic cigarette 201, and the second casing 208 supports the bottom of the electronic cigarette 201, increasing the distance between the electronic cigarette 201 and the charging device 203.
- the stability reduces the sliding between the electronic cigarette 201 and the charging device 203 .
- a first magnet 207 is provided inside the first casing 204 near the first side plate 205
- a first magnet 207 is arranged inside the electronic cigarette 201 near the second side plate 202
- the second magnet 216 is disposed opposite to the first magnet 207 .
- a convex portion 206 protruding toward the inner side of the charging device 203 is provided on the side of the first casing 204 facing the inner side of the charging device 203 .
- the convex portion 206 encloses a groove with the same shape as the first magnet 207 . stuck in the groove.
- the first side plate 205 is attached to the second side plate 202 .
- a first magnet 207 is provided inside the first casing 204 near the first side plate 205, and the electronic cigarette 201 is close to the second side plate inside
- a second magnet 216 is provided at 202, and the second magnet 216 is disposed opposite to the first magnet 207. After the first side plate 205 and the second side plate 202 are attached, they pass between the first magnet 207 and the second magnet 216.
- the generated attractive force installs the charging device 203 and the electronic cigarette 201 together, increasing the stability between the electronic cigarette 201 and the charging device 203 .
- a first magnet 207 is provided inside the first casing 204 near the top of the first side plate 205 and near the bottom of the first side plate 205 .
- a second magnet 216 opposite to the first magnet 207 is provided inside the 201 near the second side plate 202 .
- two first magnets 207 are arranged in the first casing 204, and two second magnets 216 are arranged in the second casing 208.
- the first magnets 207 and the second magnets 216 are arranged opposite to each other, The attractive force generated between the magnet 207 and the second magnet 216 installs the charging device 203 and the electronic cigarette 201 together, increasing the stability between the electronic cigarette 201 and the charging device 203 .
- a third magnet 209 is provided on the inner top of the second housing 208 , and a fourth magnet 209 facing the third magnet 209 is provided at the inner bottom of the electronic cigarette 201 . Magnet 217.
- magnets are arranged on the inner top of the second casing 208 and the inner bottom of the electronic cigarette 201, and the bottom of the electronic cigarette 201 is adsorbed on the top of the second casing 208 through the attractive force of the magnets, so that the gap between the electronic cigarette 201 and the charging device 203 is closer. stable.
- the charging probe 210 includes a second connecting portion 211 and a protruding portion 212 , the first end of the second connecting portion 211 is fixed on the circuit board 215 , and the second connecting portion 211 is the second The end is connected to the protruding part 212 , the diameter of the second connecting part 211 is larger than the diameter of the through hole 213 , the second connecting part 211 is stuck on the side of the first side plate 205 away from the electronic cigarette 201 , and the protruding part 212 passes through the through hole 213 .
- the charging probe 210 is provided with the second connecting portion 211 and the protruding portion 212, and the diameter of the second connecting portion 211 is larger than the diameter of the through hole 213, and the second end of the second connecting portion 211 is clamped on the first side plate 205 is far away from the side of the electronic cigarette 201, so that there is a certain gap between the circuit board 215 and the first side plate 205, so as to avoid the extrusion between the circuit board 215 and the first side plate 205, which will affect the normal operation of the circuit board 215.
- one end of the protruding portion 212 of the charging probe 210 away from the second connecting portion 211 is hemispherical.
- the charging probe 210 can be slid into the charging interface 214 , thereby reducing the resistance when inserting the charging probe 210 into the charging interface 214 , which is convenient for the user to use.
- the charging probe 210 includes a power probe for charging the electronic cigarette 201 and an identification probe for identifying the connection between the electronic cigarette 201 and the charging device 203
- the power probe includes a power positive probe and a power negative probe and a charging indication probe for indicating the charging state
- the charging interface 214 includes a positive power supply interface, a negative power supply interface and a charging indication interface which are respectively adapted to the positive power supply probe, the negative power supply probe, the charging indication probe and the identification probe. and identification interface.
- the electronic cigarette 201 When charging the electronic cigarette 201, insert the power supply positive probe, power negative probe, charging indication probe and identification probe into the corresponding power supply positive interface, power negative interface, charging indication interface and identification interface respectively, and then check the identification probe. pin level is detected. If the level of the identification probe changes from a high level to a low level, the electronic cigarette 201 is successfully connected to the charging device 203 , and the charging device 203 charges the electronic cigarette 201 through the power probe.
- a battery is provided in the charging device 203 , the battery is connected to the circuit board 215 , and the battery charges the electronic cigarette 201 through the probe on the circuit board 215 .
- a charging circuit for charging the battery is provided in the charging device 203 , a charging port is reserved on the charging circuit, and the charging port is snapped into the mounting hole on the first casing 204 .
- the battery in the charging device 203 can be charged through the charging port, so as to ensure the power of the battery in the charging device 203 and be convenient for the user to use.
- a plurality of indicator lights are provided on the second housing 208 , and the indicator lights include a charging indicator light for displaying the charging state of the electronic cigarette 201 , and a charging indicator light for displaying the charging and discharging state of the charging device 203 . .
- the charging indicator light shows red, and the charging indicator light keeps flashing during the charging process of the electronic cigarette 201, indicating that the electronic cigarette 201 is being charged; after the electronic cigarette 201 is fully charged, the charging indicator light It is green and the charging indicator is always on, indicating that the electronic cigarette 201 is fully charged.
- the charging indicator light flashes, and at the same time, the amount of the battery in the charging device 203 is indicated by the number of the charging indicator light that is always on. If all the charging indicators are always on, it means that the battery in the charging device 203 has reached a fully charged state, and it is necessary to stop charging the charging device 203; if all the charging indicators are off, it means that the battery in the charging device 203 is too low, The charging device 203 needs to be charged in time.
- the present invention provides a charging indicator light to indicate the power of the charging device 203, so that the user can charge the charging device 203 in time when the power of the charging device 203 is insufficient, which improves the battery life of the charging device 203 and is convenient for the user to use.
- the electronic cigarette 201 adopts the microwave heating method. Compared with the heating method using the heating resistance wire, the temperature during the microwave heating is lower and has higher safety. At the same time, the microwave heating does not generate harmful substances, reducing the damage to the user's body.
- the electronic cigarette 201 is provided with a microwave generating device.
- the microwave generating device includes a microwave cavity and a microwave antenna disposed in the microwave cavity.
- the top of the microwave cavity is provided with an opening, and the microwave cavity is connected to the outside of the electronic cigarette 201 through the opening. Connected.
- the present invention is provided with a corrugated ring in the microwave cavity, and the microwave radiation is suppressed by the corrugated ring.
- the present invention also introduces a charging method for a split-type electronic heating device. After the charging probe 210 on the charging device 203 is connected to the charging interface 214 on the electronic cigarette 201, the voltage of the electronic cigarette 201 is obtained. If the voltage of the electronic cigarette 201 is low At the first set voltage, the charging device 203 charges the electronic cigarette 201 through the charging probe 210; after the voltage of the electronic cigarette 201 is higher than the second set voltage, the charging device 203 stops charging the electronic cigarette 201, and the electronic cigarette 201 Enter sleep state.
- the charging device 203 After the charging probe 210 on the charging device 203 is connected to the charging interface 214 on the electronic cigarette 201, the level at the identification probe changes from a high level to a low level, and the charging device 203 recognizes the electronic cigarette Smoke 201 access. After the charging device 203 recognizes that the electronic cigarette 201 is connected, the charging device 203 charges the electronic cigarette 201 .
- the higher the power of the battery the higher the output voltage of the battery.
- the battery cannot supply power to the load normally. Even if there is still a certain amount of power in the battery, the output voltage of the battery is too low to meet the demand of the load, so the load cannot work normally.
- the battery power is too high, if you continue to charge the battery, the service life of the battery will be reduced.
- the charging device 203 when charging the electronic cigarette 201, it is first detected whether the identification probe on the charging device 203 is successfully connected to the identification interface on the electronic cigarette 201, and after the identification probe is successfully connected to the identification interface, the identification probe The level of the electronic cigarette 201 changes from a high level to a low level. At this time, the charging device 203 recognizes that the electronic cigarette 201 is connected. After the electronic cigarette 201 is connected to the charging device 203, the voltage of the electronic cigarette 201 is detected, and the detected voltage of the electronic cigarette 201 is compared with the preset first voltage. Only when the detected voltage of the electronic cigarette 201 is lower than The charging device 203 will only charge the electronic cigarette 201 when the first set voltage is reached.
- the charging device 203 stops charging the electronic cigarette 201.
- the electronic cigarette 201 enters a dormant state, which improves the service life of the battery in the electronic cigarette 201 .
- an embodiment of the present invention introduces a microwave antenna, which includes a base 101 , a radiating portion 102 protruding upward is provided on the top of the base 101 , and a microstrip protruding downward is provided at the bottom of the base 101 Feeder 103.
- the microstrip feeder 103 is connected to the microwave generating device, and the microwaves emitted by the microwave generating device are transmitted to the radiation part 102 through the microstrip feeder 103, and the microwaves are radiated outward through the radiation part 102, and the microwave is transmitted to the pod. It is heated to generate smoke to meet the needs of users.
- the radiating part 102 includes a sleeve 104. Inside the sleeve 104, a fixing rod 105 is arranged coaxially with the sleeve 104. A conductor patch 106 is arranged between the fixing rod 105 and the sleeve 104. The length of the barrel 104 in the axial direction is equal to the length of the fixing rod 105 .
- the conductor patch 106 is arranged between the sleeve 104 and the fixing rod 105, and the conductor patch 106 is clamped by the fixing rod 105 and the sleeve 104, and the conductor patch 106 is clamped.
- the sheet 106 is fixed between the sleeve 104 and the fixing rod 105 to improve the stability of the conductor patch 106 and prevent the conductor patch 106 from loosening.
- the conductor patch 106 includes a patch body 107 disposed between the sleeve 104 and the fixing rod 105 and a first connecting portion 108 inserted into the base 101 .
- the patch body 107 It is cylindrical, the patch body 107 and the sleeve 104 are coaxially arranged, the bottom of the patch body 107 is connected to the top of the first connecting part 108, the inner diameter of the patch body 107 is equal to the diameter of the fixing rod 105, and the outer diameter of the patch body 107 is equal to the diameter of the fixing rod 105.
- the diameter is equal to the inner diameter of the sleeve 104 .
- the conductor patch 106 is set as the patch body 107 and the first connecting part 108, and the first end of the first connecting part 108 is inserted into the base 101 to receive the microwave transmitted through the microstrip feeder 103, and the first connection
- the second end of the connecting portion 108 protrudes to the top of the base 101
- the second end of the first connecting portion 108 is located inside the sleeve 104 , and transmits microwaves to the patch body 107 in the sleeve 104 , and the microwaves are radiated outward through the patch body 107 Then heat the cartridge.
- the patch body 107 close to the outside of the fixing rod 105 to avoid a gap between the patch body 107 and the fixing rod 105, and at the same time the patch body 107 is close to the inner side of the sleeve 104, so as to avoid the patch body 107 and the fixing rod
- the patch body 107 is fixed by the sleeve 104 and the fixing rod 105, so as to prevent the patch body 107 from loosening and ensure the normal operation of the patch body 107.
- the patch body 107 is a long strip, and the long strip surrounds the outside of the fixing rod 105 in a spiral manner.
- the structure of the patch body 107 is simple, the manufacturing difficulty of the patch body 107 is reduced, and the manufacturing cost of the patch body 107 is reduced.
- the elongated patch body 107 surrounds the fixing rod 105.
- the installation of the patch body 107 is simple, the length of the patch body 107 is increased in a limited space, and the heating effect of the electronic cigarette is improved.
- the length of the patch body 107 along the axial direction is equal to the length of the fixing rod 105 .
- the bottom of the patch body 107 is connected to the top of the first connecting portion 108 , the bottom of the patch body 107 is located on the top of the base 101 , the top of the patch body 107 is located on the top of the fixing rod 105 , and the length of the patch body 107 along the axial direction is the same as the fixing rod 105 are equal in length.
- the patch body 107 makes full use of the space inside the sleeve 104, increases the length of the patch body 107, improves the utilization rate of the interior space of the sleeve 104, and improves the heating effect of the electronic cigarette.
- the patch body 107 is a corrugated sheet, the longitudinal axis of the wave sheet extends along the axial direction of the sleeve 104 , and the wave sheet surrounds the fixing rod 105 to form a cylindrical patch body 107 .
- the corrugated sheet has a square wave shape, and the length of the corrugated sheet along the axial direction of the sleeve 104 is equal to the length of the fixing rod 105 .
- the patch body 107 is set as a corrugated sheet surrounding the fixing rod 105 , and the outer side of the patch body 107 has a hollow area for the fixing rod 105 to pass through.
- the fixing rod 105 enters the interior of the patch body 107 through the hollow area, the fixing rod 105 and the patch body 107 are coaxially arranged, and the patch body 107 surrounds the fixing rod 105 under the action of its own elasticity, The fixing effect of the patch body 107 is improved.
- the patch body 107 includes a plurality of fan rings 109 arranged coaxially with the sleeve 104 , the fan rings 109 are arranged at intervals along the axial direction of the sleeve 104 , and the two ends of the fan rings 109 along the circumferential direction The ends of the upper fan ring 110 and the lower fan ring 111 adjacent to the fan ring 109 are respectively connected.
- the opening directions of the plurality of fan rings 109 are the same.
- the patch body 107 includes a plurality of fan rings 109.
- the two fan rings 109 adjacent to the fan rings 109 are an upper fan ring 110 and a lower fan ring 111, respectively.
- the upper fan ring 110 is located on the lower side of the fan ring 109, and the lower fan ring 111 Located on the lower side of the fan ring 109 , the two ends of the fan ring 109 along the circumferential direction are respectively connected with the upper fan ring 110 and the lower fan ring 111 .
- the fan ring 109 at the bottom of the patch body 107 is connected to the top of the first connecting portion 108 , and the fan ring 109 at the top of the patch body 107 is disposed on the top of the sleeve 104 .
- the patch body 107 is configured as a plurality of fan rings 109, the opening directions of the fan rings 109 are the same, and the openings of the fan rings 109 form a hollow area for the fixing rod 105 to pass through.
- the fixing rod 105 enters the interior of the patch body 107 through the hollow area, the fixing rod 105 and the patch body 107 are coaxially arranged, and the patch body 107 surrounds the fixing rod 105 under the action of its own elasticity, The fixing effect of the patch body 107 is improved.
- the radiating portion 102 includes a plug 112 disposed on the top of the sleeve 104 , the plug 112 is conical, the circular surface of the plug 112 is disposed on the top of the sleeve 104 , and the circular plug 112 has a circular shape.
- the diameter of the face is equal to the outer diameter of the sleeve 104 .
- the plug 112 is arranged on the top of the sleeve 104, and the plug 112 is conical, which facilitates the installation of the microwave antenna.
- the embodiment of the present invention introduces a microwave generating circuit, which includes a power supply circuit, a first operational amplifier circuit, a second operational amplifier circuit, a single-chip microcomputer U4, a microwave chip U6 and a power drive circuit.
- the input end of the power supply circuit is connected to The power supply unit is connected, the first output end of the power supply circuit is connected to the gate voltage pin Vg of the microwave chip U6 through the first operational amplifier circuit, the second output end of the power supply circuit is connected to the input port VCC of the single-chip microcomputer U4, and the output port DAC of the single-chip microcomputer U4
- the second operational amplifier circuit is connected to the tuning voltage pin Vt of the microwave chip U6, and the output port IO1 of the single-chip microcomputer U4 is connected to the enable voltage pin En of the microwave chip U6 and the drain voltage pin of the microwave chip U6 through the power drive circuit. Vd.
- the power supply unit is used to supply power to the microwave generating circuit
- the second output end of the power supply circuit is connected to the input port VCC of the single-chip microcomputer U4
- the power supply circuit stabilizes the voltage of the power supply unit and supplies power to the single-chip microcomputer U4.
- the microcontroller U4 has a built-in control program, which can control the output voltage of the output port DAC of the microcontroller U4 by adjusting the parameters of the control program, such as adjusting the duty cycle, frequency sweep, time and other parameters.
- the output port DAC of the single-chip microcomputer U4 is the DA output. Through the control program, the output port DAC of the single-chip microcomputer U4 can be controlled to output a continuous 0-3.3V voltage.
- the output voltage of the output port DAC of the single-chip microcomputer U4 is amplified by the second operational amplifier circuit.
- the microwave chip U6 is powered, and the voltage amplified by the second operational amplifier circuit conforms to the working voltage of the microwave chip U6. Since the output voltage of the output port DAC of the single-chip microcomputer U4 is adjustable, the output frequency of the microwave chip U6 can be controlled.
- the single-chip microcomputer U4 has an output port IO1, and the single-chip microcomputer U4 controls the power driving circuit through the output port IO1.
- the enable voltage pin En of the microwave chip U6 and the drain voltage pin Vd of the microwave chip U6 receive a low level signal;
- the enable voltage pin En of the microwave chip U6 and the drain voltage pin Vd of the microwave chip U6 receive a high-level signal.
- the output of the microwave chip U6 can be controlled according to the signal received by the enabling voltage pin En of the microwave chip U6.
- the present invention controls the operation and stop of the microwave chip U6 by outputting PWM waves through the output port IO1 of the single-chip microcomputer U4, thereby controlling the microwave chip U6 output power.
- the working voltage of the microwave chip U6 is 8V, and the working frequency of the microwave chip U6 is 8W.
- the output of the microwave chip U6 can be adjusted.
- Power by controlling the voltage of the tuning voltage pin Vt of the microwave chip U6, the output frequency of the microwave chip U6 can be adjusted.
- the output power of the microwave chip U6 is adjustable within 8W, and the output frequency of the microwave chip U6 is adjustable within the range of 2.4-2.5GHz.
- the first operational amplifier circuit includes a first operational amplifier U3, the non-inverting input terminal of the first operational amplifier U3 is connected to the first output terminal of the power supply circuit through the resistor R5, and the inverting input terminal of the first operational amplifier U3 is connected to the first output terminal of the power supply circuit.
- the output end of the first operational amplifier U3 is connected, and the output end of the first operational amplifier U3 is connected to the gate voltage pin Vg of the microwave chip U6.
- the positive pole of the power supply of the first operational amplifier U3 is connected to the first output terminal of the power supply circuit, the negative pole of the power supply of the first operational amplifier U3 is grounded, the non-inverting input terminal of the first operational amplifier U3 is grounded through the resistor R6, and the output terminal of the first operational amplifier U3 is connected to the ground through the resistor R6.
- Capacitor C6 is connected to ground.
- the second operational amplifier circuit includes a second operational amplifier U5, the non-inverting input terminal of the second operational amplifier U5 is connected to the output port DAC of the microcontroller U4 through the resistor R7, and the inverting input terminal of the second operational amplifier U5 is connected to the output port DAC of the single-chip microcomputer U4 through the resistor R7.
- the resistor R1 is grounded, the inverting input terminal of the second operational amplifier U5 is connected to the output terminal of the second operational amplifier U5 through the resistor R2, and the output terminal of the second operational amplifier U5 is connected to the tuning voltage pin Vt of the microwave chip U6.
- the positive pole of the power supply of the second operational amplifier U5 is connected to the power supply unit, the negative pole of the power supply of the second operational amplifier U5 is grounded, the output terminal of the second operational amplifier U5 is grounded through the capacitor C6, and the output port DAC of the single-chip microcomputer U4 is grounded through the resistor R8.
- the output voltage of the output port DAC of the single-chip microcomputer U4 is controlled, and the output voltage of the output port DAC of the single-chip microcomputer U4 is provided to the tuning voltage pin Vt of the microwave chip U6 after the second operational amplifier circuit. Adjust the output frequency of the microwave chip U6.
- the power driving circuit includes a first field effect transistor Q1 and a second field effect transistor Q2, the source of the first field effect transistor Q1 is connected to the power supply unit, and the gate of the first field effect transistor Q1 is connected to the first field effect transistor Q1.
- the source of the first field effect transistor Q1 is connected to the gate of the first field effect transistor Q1 via the resistor R3
- the source of the second field effect transistor Q2 is connected to the gate of the second field effect transistor Q2 via the resistor R4
- the first The drain of the field effect transistor Q1 is grounded through the capacitor C7.
- the first field effect transistor Q1 and the second field effect transistor Q2 are used in the power driving circuit, the gate of the second field effect transistor Q2 is connected to the output port IO1 of the single-chip microcomputer U4, and the source of the second field effect transistor Q2 Grounding, the voltage between the gate and the source of the second field effect transistor Q2 is controlled by controlling the level of the output port IO1 of the single-chip microcomputer U4, and then the drain output of the second field effect transistor Q2 is controlled.
- the drain of the second field effect transistor Q2 is connected to the gate of the first field effect transistor Q1, the source of the first field effect transistor Q1 is connected to the power supply unit, and the source voltage of the first field effect transistor Q1 is fixed.
- the drain output of the two field effect transistors Q2 is used to control the gate voltage of the first field effect transistor Q1, thereby controlling the drain output of the first field effect transistor Q1, and controlling the voltage of the enable voltage pin En of the microwave chip U6, and further Control the output power of the microwave chip U6.
- the power supply circuit includes a voltage stabilizer chip U1 and a negative pressure chip U2, the input end of the voltage stabilizer chip U1 is connected to the power supply unit, the input end of the voltage stabilizer chip U1 is grounded through the capacitor C1, and the output end of the voltage stabilizer chip U1 It is connected to the input terminal of the negative pressure chip U2 and the input terminal VCC of the single-chip microcomputer U4.
- the output terminal of the voltage regulator chip U1 is grounded through the capacitor C2, and the output terminal of the negative pressure chip U2 is connected to the non-inverting input terminal of the first operational amplifier U3 through the resistor R5.
- the input terminal of the negative pressure chip U2 is grounded through the capacitor C3, and the output terminal of the negative pressure chip U2 is grounded through the capacitor C4.
- the power supply circuit has a voltage regulator chip and a negative pressure chip, so that the power supply circuit can output a voltage of +3.3V, which is in line with the working voltage of the single-chip microcomputer, and the power supply circuit can also output a voltage of -3.3V, which is amplified by the first operational amplifier circuit as a microwave Gate voltage of chip U6.
- the microwave chip U6 includes a voltage controlled oscillator VCO, a low noise amplifier, a first power amplifier and a second power amplifier connected in sequence, and the first power amplifier and the second power amplifier are synthesized by a lange bridge.
- the microwave chip U6 has a voltage-controlled oscillator VCO, and the output frequency can be adjusted by adjusting the input control voltage of the voltage-controlled oscillator VCO.
- the microwave chip U6 has a pin Vt, a pin En, a pin Vg, a pin Vd, a pin GND, and a pin POUT, wherein the pin Vt of the microwave chip U6 represents the VCO tuning voltage.
- the pin En represents the VCO enable voltage, which can control the operation and stop of the microwave chip U6, thereby controlling the output power of the microwave chip U6
- the pin POUT is the output pin of the microwave chip U6.
- the embodiment of the present invention introduces a microwave generating device, which includes a battery and a microstrip feeder, and has a microwave generating circuit as described in any of the above embodiments.
- the battery serves as a power supply unit of the microwave generating circuit, and the microstrip feeder and the microwave generating circuit
- the RF output pin POUT of the medium microwave chip U6 is connected.
- the microwave chip U6 is powered by 8V voltage, and the disadvantage of circuit boosting required for the 28V power supply of the existing discrete components is abandoned.
- the power supply unit provides a voltage of 7.7V-8.7V, and after the power supply circuit stabilizes the voltage, it outputs the 3.3V voltage of the single-chip microcomputer U4.
- the radio frequency output pin POUT of the microwave chip U6 emits microwaves, and transmits the microwaves to the target medium through the microstrip feeder to heat the target medium.
- the microwave generating device is applied to the electronic cigarette, the electronic cigarette has a microwave cavity, and the microwave generating device is installed in the microwave cavity of the electronic cigarette. It acts on the tobacco medium in the microwave cavity to heat the tobacco medium and generate smoke.
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- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Electromagnetism (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Control Of High-Frequency Heating Circuits (AREA)
Abstract
Description
Claims (10)
- 一种微波发生电路,其特征在于,包括电源电路、第一运算放大电路、第二运算放大电路、单片机U4、微波芯片U6和功率驱动电路,电源电路输入端与供电单元连接,电源电路第一输出端经第一运算放大电路连接至微波芯片U6的栅极电压管脚Vg,电源电路第二输出端连接至单片机U4的输入端口VCC,单片机U4的输出端口DAC经第二运算放大电路连接至微波芯片U6的调谐电压管脚Vt,单片机U4的输出端口IO1经功率驱动电路连接至微波芯片U6的使能电压管脚En和微波芯片U6的漏极电压管脚Vd。
- 根据权利要求1所述的一种微波发生电路,其特征在于,第一运算放大电路包括第一运算放大器U3,第一运算放大器U3的同相输入端经电阻R5连接至电源电路第一输出端,第一运算放大器U3的反向输入端与第一运算放大器U3输出端连接,第一运算放大器U3输出端连接至微波芯片U6的栅极电压管脚Vg。
- 根据权利要求2所述的一种微波发生电路,其特征在于,第一运算放大器U3的同相输入端经电阻R6接地,第一运算放大器U3的输出端经电容C5接地。
- 根据权利要求1所述的一种微波发生电路,其特征在于,第二运算放大电路包括第二运算放大器U5,第二运算放大器U5的同相输入端经电阻R7连接至单片机U4的输出端口DAC,第二运算放大器U5的反相输入端经电阻R1接地,第二运算放大器U5的反向输入端经电阻R2连接至第二运算放大器U5的输出端,第二运算放大器U5的输出端连接至微波芯片U6的调谐电压管脚Vt。
- 根据权利要求4所述的一种微波发生电路,其特征在于,第二运算放大器U5的电源正极连接至供电单元,第二运算放大器U5的电源负极接地,第二运算放大器U5的输出端经电容C6接地,单片机U4的输出端口DAC经电阻R8接地。
- 根据权利要求1所述的一种微波发生电路,其特征在于,功率驱动电路包括第一场效应管Q1和第二场效应管Q2,第一场效应管Q1的源极与供电单元连接,第一场效应管Q1的栅极连接至第二场效应管Q2的漏极,第一场效应管Q1的漏极连接至微波芯片U6的漏极电压管脚Vd,第二场效应管Q2的栅极连接至单片机U4的输出端口IO1,第二场效应管Q2的源极接地。
- 根据权利要求6所述的一种微波发生电路,其特征在于,第一场效应管Q1的源极经电阻R3连接至第一场效应管Q1的栅极,第二场效应管Q2的源极经电阻R4连接至第二场效应管Q2的栅极,第一场效应管Q1的漏极经电容C7接地。
- 根据权利要求3所述的一种微波发生电路,其特征在于,电源电路包括稳压芯片U1和 负压芯片U2,稳压芯片U1的输入端与供电单元连接,稳压芯片U1的输入端经电容C1接地,稳压芯片U1的输出端连接至负压芯片U2的输入端和单片机U4的输入端VCC,稳压芯片U1的输出端经电容C2接地,负压芯片U2的输出端经电阻R5连接至第一运算放大器U3的同相输入端,负压芯片U2的输入端经电容C3接地,负压芯片U2的输出端经电容C4接地。
- 根据权利要求1所述的一种微波发生电路,其特征在于,微波芯片U6包括依次连接的压控振荡器VCO、低噪声放大器、第一功率放大器和第二功率放大器,第一功率放大器和第二功率放大器之间通过lange电桥合成。
- 一种微波发生装置,包括电池和微带线,其特征在于,具有如上权利要求1-9任一所述的一种微波发生电路,电池作为所述微波发生电路的供电单元,微带线与微波发生电路中微波芯片U6的射频输出管脚POUT连接。
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CN202110364867.5A CN113100505B (zh) | 2021-04-02 | 2021-04-02 | 一种分体式电子加热烟具及其充电方法 |
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