Electric flame stove

Abstract

The utility model relates to an electric flame stove which comprises a high-voltage pack, a driving module used for converting direct current into full-bridge high-frequency alternating current so as to drive the high-voltage pack, a control module used for controlling the driving module and a voltage doubling rectifying module used for generating voltage doubling rectifying voltage from voltage output from the high-voltage pack. The input end of the driving module is used for being connected with direct current, the output end of the driving module is connected with the input end of the high-voltage pack, the output end of the high-voltage pack is connected with the input end of the voltage doubling rectifying module, the output end of the voltage doubling rectifying module is connected with a spray point, and the control module is connected with the driving module. Direct current can be converted into full-bridge high-frequency alternating current capable of directly driving the high-voltage pack, high-power driving is met, the buffer voltage of the high-voltage pack is reduced, and the conversion efficiency is improved; and ground protection is also carried out on the high-voltage pack, so that the use safety is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electric flame stoves, in particular to an electric flame stove. Background Art

[0002] As a new technology, electric flame stoves still have many deficiencies and technical defects. For example, the patent with application number 201910967117X discloses an ionization combustion circuit and an electric flame stove.

[0003] The ionization combustion circuit includes a power supply module, a voltage conversion module, a voltage doubler rectifier module, an ignition module and a combustion module; the power supply module is used to provide an input voltage; the voltage conversion module is connected to the power supply module, and is used to convert the input voltage into a driving voltage; the voltage doubler rectifier module is connected to the voltage conversion module, and is used to generate a rectified voltage according to the driving voltage; the ignition module is connected to the voltage doubler rectifier module, and is used to strike an arc according to the rectified voltage; the combustion module is connected to the voltage conversion module, and is used to discharge to the ground according to the driving voltage.

[0004] Since the voltage-doubling rectifier module increases the driving voltage by N times to generate a rectified voltage, the ignition module is used to start an arc and ignite according to the rectified voltage. When the ignition module breaks down the air, the combustion module discharges to the ground under the drive of the driving voltage to maintain continuous combustion of the heat source. Therefore, only the ignition module is required to start an arc at high voltage, while the combustion module maintains combustion under the drive of a lower driving voltage, thereby reducing the operating power of the circuit, saving energy, and reducing the high-voltage resistance requirements of the device, thereby reducing costs.

[0005] However, the disadvantage of the prior art is that the driving voltage converted by the voltage conversion module is difficult to meet the high-power driving. In addition, the existing high-voltage package lacks ground protection and has poor safety.

[0006] Therefore, in the utility model patent application, the applicant has carefully studied an electric flame stove to solve the above problems. Utility Model Content

[0007] The utility model aims to overcome the deficiencies in the above-mentioned prior art and its main purpose is to provide an electric flame cooker which can first convert direct current into full-bridge high-frequency alternating current that can directly drive a high-voltage package to meet high-power drive requirements, reduce the buffer voltage of the high-voltage package, and improve conversion efficiency; it also performs grounding protection on the high-voltage package, thereby greatly improving safety in use.

[0008] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions:

[0009] An electric flame cooker includes a high-voltage package, a driving module for converting direct current into full-bridge high-frequency alternating current to drive the high-voltage package, a control module for controlling the driving module, and a voltage-doubler rectifier module for generating a voltage-doubler rectifier voltage from a voltage output from the high-voltage package;

[0010] The input end of the driving module is used to connect direct current, the output end of the driving module is connected to the input end of the high-voltage package, the output end of the high-voltage package is connected to the input end of the voltage doubler rectifier module, the output end of the voltage doubler rectifier module is connected to a discharge needle, and the control module is connected to the driving module;

[0011] The output end of the high-voltage package is also connected to a ground protection circuit.

[0012] As a preferred solution, the driving module includes a VCC voltage conversion circuit, a first driving module and a second driving module respectively connected to the positive and negative electrodes of the high-voltage package input terminal;

[0013] The first driving module and the second driving module both include a switch transformer and a switch circuit connected in sequence, the input end of the switch transformer is connected to the control module and the VCC voltage end of the VCC voltage conversion circuit, and the output end of the switch circuit is connected to the corresponding pole of the high-voltage package input end.

[0014] As a preferred solution, the switch circuit includes a first MOS transistor, a second MOS transistor, a first diode, a second diode, a first resistor, a second resistor, a third resistor and a fourth resistor;

[0015] The primary side of the switching transformer is connected to the control module, the cathode of the first diode is connected to the pin 10 of the secondary side of the switching transformer through the first resistor, the anode of the first diode is connected to the pin 10 of the secondary side of the switching transformer through the second resistor, the gate of the first MOS tube is connected to the anode of the first diode, the drain of the first MOS tube is used to connect to the positive electrode of the direct current, the pin 9 of the secondary side of the switching transformer and the drain of the second MOS tube are commonly connected to the source of the first MOS tube, and the source of the first MOS tube is connected to the corresponding pole of the high-voltage package input end;

[0016] The cathode of the second diode is connected to pin 6 on the secondary side of the switching transformer through a fourth resistor, the anode of the second diode is connected to pin 6 on the secondary side of the switching transformer through a third resistor, the gate of the second MOS tube is connected to the anode of the second diode, and the source of the second MOS tube and pin 7 on the secondary side of the switching transformer are both grounded.

[0017] As a preferred solution, the output end of the switch circuit of the first driving module is connected to the positive electrode of the high-voltage package input end through a capacitor parallel circuit.

[0018] As a preferred solution, the voltage doubler rectifier module includes a plurality of parallel voltage doubler rectifier circuits, the input end of each voltage doubler rectifier circuit is commonly connected to the output end of the high-voltage package, and the output end of each voltage doubler rectifier circuit is respectively connected to a discharge needle.

[0019] As a preferred solution, the voltage doubling rectifier circuit includes a first capacitor series unit composed of a plurality of first capacitors connected in series, a second capacitor series unit composed of a plurality of second capacitors connected in series, a third capacitor series unit composed of a plurality of third capacitors connected in series, a forward series unit composed of a plurality of first fast recovery diodes connected in forward direction in series, and a reverse series unit composed of a plurality of second fast recovery diodes connected in reverse direction in series;

[0020] The positive output terminal of the high-voltage package is grounded through a first capacitor series unit, and the positive output terminal of the high-voltage package is also connected to a discharge needle through a second capacitor series unit;

[0021] The negative output end of the high-voltage package is connected to one end of the third capacitor series unit, the other end of the third capacitor series unit is connected to one end of the forward series unit, the other end of the forward series unit is connected to the discharge needle, the other end of the third capacitor series unit is also connected to one end of the reverse series unit, and the other end of the reverse series unit is grounded.

[0022] As a preferred solution, the ground protection circuit includes a fourth capacitor series unit composed of a plurality of fourth capacitors connected in series and a resistor series unit composed of a plurality of fifth resistors connected in series;

[0023] The negative output terminal of the high-voltage package is connected to the positive output terminal of the high-voltage package through the fourth capacitor series unit, the positive output terminal of the high-voltage package is connected to one end of the resistor series unit, and the other end of the resistor series unit is grounded through two Y capacitors.

[0024] As a preferred solution, the driving module further includes an interface P6 for connecting a temperature control switch;

[0025] The control module includes a main control circuit and an over-temperature and overload protection circuit. The interface P6 is connected to the main control circuit through the over-temperature and overload protection circuit. The main control circuit is connected to the input end of the switch transformer.

[0026] As a preferred solution, the control module includes a main control circuit, a switch transformer driving circuit for driving a switch transformer, and a fan control circuit for controlling a furnace head fan;

[0027] The fan control circuit is connected to the main control circuit, and the main control circuit is connected to the switching transformer via the switching transformer driving circuit.

[0028] As a preferred solution, the control module includes a main control circuit and a display screen, and the main control circuit is connected to the drive module and the display screen respectively.

[0029] Compared with the prior art, the utility model has obvious advantages and beneficial effects. Specifically, it mainly converts direct current into full-bridge high-frequency alternating current that can directly drive the high-voltage package through the cooperation of the high-voltage package, the drive module, the control module and the voltage doubling rectifier module, so as to meet the high-power drive, reduce the buffer voltage of the high-voltage package, and improve the conversion efficiency; in particular, the high-voltage package is grounded through the grounding protection circuit, which greatly improves the safety of use;

[0030] In addition, the overall circuit structure design is ingenious and reasonable, ensuring the stability and reliability of the electric flame stove during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a control principle block diagram of an embodiment of the utility model;

[0032] Figure 2 It is a schematic diagram of a VCC voltage conversion circuit of a driving module according to an embodiment of the utility model;

[0033] Figure 3 This is a circuit schematic diagram of the first driving module and the second driving module of an embodiment of the utility model;

[0034] Figure 4 This is a schematic diagram of a high-voltage package according to an embodiment of the utility model;

[0035] Figure 5 This is a circuit diagram of a voltage doubler rectifier module according to an embodiment of the utility model;

[0036] Figure 6 This is a schematic diagram of a single voltage doubling rectifier circuit according to an embodiment of the utility model;

[0037] Figure 7 It is a schematic diagram of the main control module circuit of an embodiment of the utility model.

[0038] Description of Figure Numbers:

[0039] 10. Driver module

[0040] 11. VCC voltage conversion circuit

[0041] 12. First driving module 13. Second driving module

[0042] 14. Switching transformer 15. Switching circuit.

[0043] 20. High-voltage package

[0044] 30. Voltage doubler rectifier module

[0045] 31. Voltage doubler rectifier circuit

[0046] 311, first capacitor series unit 312, second capacitor series unit

[0047] 313, third capacitor series unit 314, forward series unit

[0048] 315. Reverse series connection unit

[0049] 40. Control module

[0050] 41. Main control circuit 42. Display screen

[0051] 43. Knob switch 44. Over temperature and overload protection circuit

[0052] 50. Discharge needle

[0053] 60. Ground protection circuit

[0054] 61. Fourth capacitor series unit 62. Resistance series unit

[0055] 71. Fan control circuit 72. Switching transformer drive circuit. DETAILED DESCRIPTION

[0056] The utility model is further described below in conjunction with the accompanying drawings and specific implementation methods.

[0057] like Figures 1 to 7 As shown, the utility model is an electric flame cooker, comprising a high-voltage package 20, a driving module 10 for converting low-frequency direct current into full-bridge high-frequency direct current to drive the high-voltage package 20, a control module 40 for controlling the driving module 10, and a voltage-doubler rectifier module 30 for generating a voltage-doubler rectifier voltage from the voltage output from the high-voltage package 20;

[0058] The input end of the driving module 10 is used to connect direct current, the output end of the driving module 10 is connected to the input end of the high-voltage package 20, the output end of the high-voltage package 20 is connected to the input end of the voltage doubler rectifier module 30, the output end of the voltage doubler rectifier module 30 is connected to the discharge needle 50, and the control module 40 is connected to the driving module 10.

[0059] In this embodiment, the driving module 10 includes a VCC voltage conversion circuit 11, an interface P6 for connecting a temperature control switch, a first driving module 12 and a second driving module 13 respectively connected to the positive and negative electrodes of the input end of the high-voltage package 20;

[0060] The first driving module 12 and the second driving module 13 both include a switch transformer 14 and a switch circuit 15 which are connected in sequence. Preferably, the core of the switch transformer 14 is a UY20 ferrite core.

[0061] The input end of the switch transformer 14 is connected to the control module 40 and the VCC voltage end of the VCC voltage conversion circuit 11 , and the output end of the switch circuit 15 is connected to the corresponding pole of the input end of the high-voltage package 20 .

[0062] The switch circuit 15 includes a first MOS transistor, a second MOS transistor, a first diode, a second diode, a first resistor, a second resistor, a third resistor and a fourth resistor;

[0063] The primary side of the switch transformer 14 is connected to the control module 40, the cathode of the first diode is connected to the pin 10 of the secondary side of the switch transformer 14 through the first resistor, the anode of the first diode is connected to the pin 10 of the secondary side of the switch transformer 14 through the second resistor, the gate of the first MOS tube is connected to the anode of the first diode, the drain of the first MOS tube is used to connect to the positive electrode of the direct current, the pin 9 of the secondary side of the switch transformer 14 and the drain of the second MOS tube are commonly connected to the source of the first MOS tube, and the source of the first MOS tube is connected to the corresponding pole of the input end of the high-voltage package 20;

[0064] The cathode of the second diode is connected to pin 6 on the secondary side of the switching transformer 14 through a fourth resistor, the anode of the second diode is connected to pin 6 on the secondary side of the switching transformer 14 through a third resistor, the gate of the second MOS tube is connected to the anode of the second diode, and the source of the second MOS tube and pin 7 on the secondary side of the switching transformer 14 are both grounded.

[0065] The output end of the switch circuit 15 of the first driving module 12 is connected to the positive electrode of the input end of the high-voltage package 20 through a capacitor parallel circuit. Preferably, the capacitor parallel circuit includes 6 capacitors connected in parallel.

[0066] The output end of the high-voltage package 20 is connected to a ground protection circuit 60. The ground protection circuit 60 includes a fourth capacitor series unit 61 composed of a plurality of fourth capacitors connected in series and a resistor series unit 62 composed of a plurality of fifth resistors connected in series;

[0067] The negative output terminal of the high-voltage package 20 is connected to the positive output terminal of the high-voltage package 20 through the fourth capacitor series unit 61, and the positive output terminal of the high-voltage package 20 is connected to one end of the resistor series unit 62, and the other end of the resistor series unit 62 is grounded through two Y capacitors.

[0068] The voltage doubler rectifier module 30 includes a plurality of voltage doubler rectifier circuits 31 connected in parallel. The input end of each voltage doubler rectifier circuit 31 is commonly connected to the output end of the high-voltage package 20 , and the output end of each voltage doubler rectifier circuit 31 is respectively connected to a discharge needle 50 .

[0069] The voltage doubling rectifier circuit 31 includes a first capacitor series connection unit 311 formed by a plurality of first capacitors connected in series, a second capacitor series connection unit 312 formed by a plurality of second capacitors connected in series, a third capacitor series connection unit 313 formed by a plurality of third capacitors connected in series, a forward series connection unit 314 formed by a plurality of first fast recovery diodes connected in forward direction in series, and a reverse series connection unit 315 formed by a plurality of second fast recovery diodes connected in reverse direction in series.

[0070] The positive output terminal of the high-voltage package 20 is grounded through the first capacitor series unit 311, and the positive output terminal of the high-voltage package 20 is also connected to the discharge needle 50 through the second capacitor series unit 312;

[0071] The negative output end of the high-voltage package 20 is connected to one end of the third capacitor series unit 313, the other end of the third capacitor series unit 313 is connected to one end of the forward series unit 314, the other end of the forward series unit 314 is connected to the discharge needle 50, and the other end of the third capacitor series unit 313 is also connected to one end of the reverse series unit 315, and the other end of the reverse series unit 315 is grounded.

[0072] In this embodiment, as shown in the figure, the control module 40 includes a main control circuit 41, an over-temperature overload protection circuit 44, a display screen 42 and a knob switch 43, and the main control circuit 41 is respectively connected to the drive module 10, the knob switch 43, the over-temperature overload protection circuit 44 and the display screen 42. The interface P6 is connected to the main control circuit 41 through the over-temperature overload protection circuit 44, and the main control circuit 41 is connected to the input end of the switch transformer 14.

[0073] Preferably, the control module 40 further includes a transformer driving circuit 72 for driving the switch transformer 14 and a fan control circuit 71 for controlling the furnace head fan;

[0074] The fan control circuit 71 is connected to the main control circuit 41, and the main control circuit 41 is connected to the switch transformer 14 through the transformer driving circuit 72. Figure 7 As shown, the transformer driving circuit 72 is connected to the switching transformer 41 through the interface J1 and the interface U5. Among them, the pins 1 to 6 of the interface J1 correspond to the pins 6, 5, 4, 3, 2, and 1 of the interface U5 respectively. In this embodiment, as Figure 7 As shown, the interface J3 of the fan control circuit 71 is used to connect the furnace head fan.

[0075] The key points of the utility model are: it mainly converts direct current into full-bridge high-frequency alternating current that can directly drive the high-voltage package through the cooperation of the high-voltage package, the drive module, the control module and the voltage doubling rectifier module, so as to meet the high-power drive, reduce the buffer voltage of the high-voltage package, and improve the conversion efficiency; in particular, the high-voltage package is grounded through the grounding protection circuit, which greatly improves the safety of use;

[0076] In addition, the overall circuit structure design is ingenious and reasonable, ensuring the stability and reliability of the electric flame stove during use.

[0077] The above description is only a preferred embodiment of the present invention and does not limit the technical scope of the present invention. Therefore, any minor modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. An electric flame cooker, characterized in that: It includes a high-voltage package, a driving module for converting direct current into full-bridge high-frequency alternating current to drive the high-voltage package, a control module for controlling the driving module, and a voltage-doubler rectifier module for generating a voltage-doubler rectifier voltage from the voltage output from the high-voltage package; The input end of the driving module is used to connect direct current, the output end of the driving module is connected to the input end of the high-voltage package, the output end of the high-voltage package is connected to the input end of the voltage doubler rectifier module, the output end of the voltage doubler rectifier module is connected to a discharge needle, and the control module is connected to the driving module; The output end of the high-voltage package is also connected to a ground protection circuit.

2. The electric flame cooker according to claim 1, characterized in that: The driving module includes a VCC voltage conversion circuit, a first driving module and a second driving module respectively connected to the positive and negative electrodes of the high-voltage package input terminal; The first driving module and the second driving module both include a switch transformer and a switch circuit connected in sequence, the input end of the switch transformer is connected to the control module and the VCC voltage end of the VCC voltage conversion circuit, and the output end of the switch circuit is connected to the corresponding pole of the high-voltage package input end.

3. The electric flame cooker according to claim 2, characterized in that: The switch circuit includes a first MOS transistor, a second MOS transistor, a first diode, a second diode, a first resistor, a second resistor, a third resistor and a fourth resistor; The primary side of the switching transformer is connected to the control module, the cathode of the first diode is connected to the pin 10 of the secondary side of the switching transformer through the first resistor, the anode of the first diode is connected to the pin 10 of the secondary side of the switching transformer through the second resistor, the gate of the first MOS tube is connected to the anode of the first diode, the drain of the first MOS tube is used to connect to the positive electrode of the direct current, the pin 9 of the secondary side of the switching transformer and the drain of the second MOS tube are commonly connected to the source of the first MOS tube, and the source of the first MOS tube is connected to the corresponding pole of the high-voltage package input end; The cathode of the second diode is connected to pin 6 on the secondary side of the switching transformer through a fourth resistor, the anode of the second diode is connected to pin 6 on the secondary side of the switching transformer through a third resistor, the gate of the second MOS tube is connected to the anode of the second diode, and the source of the second MOS tube and pin 7 on the secondary side of the switching transformer are both grounded.

4. The electric flame cooker according to claim 2, characterized in that: The output end of the switch circuit of the first driving module is connected to the positive electrode of the high-voltage package input end through a capacitor parallel circuit.

5. The electric flame cooker according to claim 1, characterized in that: The voltage doubler rectifier module includes a plurality of voltage doubler rectifier circuits connected in parallel, the input end of each voltage doubler rectifier circuit is commonly connected to the output end of the high voltage package, and the output end of each voltage doubler rectifier circuit is respectively connected to a discharge needle.

6. The electric flame cooker according to claim 5, characterized in that: The voltage doubling rectifier circuit includes a first capacitor series unit composed of a plurality of first capacitors connected in series, a second capacitor series unit composed of a plurality of second capacitors connected in series, a third capacitor series unit composed of a plurality of third capacitors connected in series, a forward series unit composed of a plurality of first fast recovery diodes connected in forward direction in series, and a reverse series unit composed of a plurality of second fast recovery diodes connected in reverse direction in series. The positive output terminal of the high-voltage package is grounded through a first capacitor series unit, and the positive output terminal of the high-voltage package is also connected to a discharge needle through a second capacitor series unit; The negative output end of the high-voltage package is connected to one end of the third capacitor series unit, the other end of the third capacitor series unit is connected to one end of the forward series unit, the other end of the forward series unit is connected to the discharge needle, the other end of the third capacitor series unit is also connected to one end of the reverse series unit, and the other end of the reverse series unit is grounded.

7. The electric flame cooker according to claim 1, characterized in that: The ground protection circuit includes a fourth capacitor series unit composed of a plurality of fourth capacitors connected in series and a resistor series unit composed of a plurality of fifth resistors connected in series; The negative output terminal of the high-voltage package is connected to the positive output terminal of the high-voltage package through the fourth capacitor series unit, the positive output terminal of the high-voltage package is connected to one end of the resistor series unit, and the other end of the resistor series unit is grounded through two Y capacitors.

8. The electric flame cooker according to claim 2, characterized in that: The driving module also includes an interface P6 for connecting a temperature control switch; The control module includes a main control circuit and an over-temperature and overload protection circuit. The interface P6 is connected to the main control circuit through the over-temperature and overload protection circuit. The main control circuit is connected to the input end of the switch transformer.

9. The electric flame cooker according to claim 2, characterized in that: The control module includes a main control circuit, a switch transformer driving circuit for driving a switch transformer, and a fan control circuit for controlling a furnace head fan; The fan control circuit is connected to the main control circuit, and the main control circuit is connected to the switching transformer via the switching transformer driving circuit.

10. The electric flame cooker according to claim 1, characterized in that: The control module includes a main control circuit and a display screen, and the main control circuit is connected to the drive module and the display screen respectively.

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