WO2021068587A1

WO2021068587A1 - Ionisation combustion circuit and electric flame cooker

Info

Publication number: WO2021068587A1
Application number: PCT/CN2020/102409
Authority: WO
Inventors: 卢驭龙
Original assignee: 德驭新能源科技(苏州)有限公司
Priority date: 2019-10-12
Filing date: 2020-07-16
Publication date: 2021-04-15
Also published as: CN112653338A

Abstract

An ionization combustion circuit and an electric flame cooker. The ionization combustion circuit comprises a power supply module (10), a voltage conversion module (20), a voltage-doubling rectifier module (30), an ignition module (40) and a combustion module (50); the power supply module (10) is used for providing an input voltage; the voltage conversion module (20) is connected to the power supply module (10) and is used for converting the input voltage into a driving voltage; the voltage-doubling rectifier module (30) is connected to the voltage conversion module (20) and is used for generating a rectified voltage according to the driving voltage; the ignition module (40) is connected to the voltage-doubling rectifier module (30) and is used for starting arc according to the rectified voltage; and the combustion module (50) is connected to the voltage conversion module (20) and is used for discharging to the ground according to the driving voltage. The present invention reduces the operating power of a circuit, saves energy, reduces the requirement for high voltage endurance of a device, and reduces the cost.

Description

An ionization combustion circuit and electric flame stove

This application claims the priority of the Chinese patent application filed in the Patent Office on October 12, 2019, with the application number 201910967117.X and the title of the invention "an ionization combustion circuit and electric flame stove", the entire content of which is approved The reference is incorporated in this application.

Technical field

This application relates to the field of electronic technology, and in particular to an ionization combustion circuit and an electric flame stove.

Background technique

The plasma torch is used as the heating source of the new type stove due to its high temperature and energy saving. However, in order to make the air breakdown, it is necessary to generate a large high voltage at the plasma needle for discharge, and in order to maintain the continuous combustion of the heat source, it is also It is necessary to continuously output high voltage to the plasma needle. When used as a stove heat source, in order to achieve a better heating effect, a relatively dense plasma torch array is required, which invisibly greatly increases the working power of the stove and cannot achieve the ideal energy-saving effect. The high voltage resistance requirements of the device will also be higher, which increases the manufacturing cost.

Therefore, the traditional technical solution cannot achieve the ideal energy-saving effect, and the high-voltage resistance requirements of the devices in the cooker will also be higher, which raises the problem of manufacturing cost.

technical problem

One of the purposes of the embodiments of the present application is to provide an ionization combustion circuit and electric flame stove, aiming to solve the traditional technical solution that cannot achieve the ideal energy-saving effect, and the requirements for the high voltage resistance of the devices in the stove will also be Higher, raises the problem of manufacturing cost.

Technical solutions

In order to solve the above technical problems, the technical solutions adopted in the embodiments of this application are:

In a first aspect, an ionization combustion circuit is provided, and the ionization combustion circuit includes:

Power module used to provide input voltage;

A voltage conversion module connected to the power supply module and used to convert the input voltage into a driving voltage;

A voltage doubler rectifier module connected to the voltage conversion module and used to generate a rectified voltage according to the driving voltage;

An ignition module connected to the voltage doubler rectifier module and used for arc ignition according to the rectified voltage;

A combustion module connected to the voltage conversion module and used for discharging to the ground according to the driving voltage.

In one of the embodiments, the voltage conversion module includes: a transformer;

The primary coil of the transformer is the input voltage input terminal of the voltage conversion module, the first terminal of the secondary coil of the transformer is the drive voltage output terminal of the voltage conversion module, and the secondary coil of the transformer is The second end is grounded.

In one of the embodiments, the rectified voltage is N times the driving voltage, where N is a positive integer greater than 3.

In one of the embodiments, the voltage doubler rectifier module includes: a first capacitor, a second capacitor, a third capacitor, a first diode, a second diode, and a third diode;

The first terminal of the first capacitor is the driving voltage input terminal of the voltage doubler rectifier module, the second terminal of the first capacitor is connected to the first terminal of the third capacitor, and the first terminal of the third capacitor is Terminal is connected to the second terminal of the first capacitor, the second terminal of the third capacitor is the rectified voltage output terminal of the voltage doubler rectifier module, and the cathode of the first diode is connected to the At the first end, the anode of the first diode is grounded, the anode of the first diode is connected to the first end of the second capacitor, the cathode of the second diode and the third The anode of the pole tube is connected to the second end of the second capacitor, the anode of the second diode is connected to the first end of the third capacitor, and the cathode of the third diode is connected to the third capacitor. The second end of the capacitor.

In one of the embodiments, it further includes:

A controllable switch connected between the voltage conversion module and the voltage doubling rectifier module and used for turning on or turning off the driving voltage according to a control signal;

A control module connected to the controllable switch and used to generate the control signal according to the user's input.

In one of the embodiments, the ignition module includes: a high-voltage ion needle and a first grounding needle corresponding to the high-voltage ion, and the high-voltage ion needle is used to control the first grounding needle according to the rectified voltage. Discharge.

In one of the embodiments, the combustion module includes a plurality of low-pressure ion needles, a plurality of second grounding needles, and a plurality of output capacitors; the plurality of low-pressure ion needles and the plurality of second grounding needles are arranged in one-to-one correspondence, so The low-voltage ion needles are respectively used for discharging the second grounding needles corresponding to the low-voltage ions, and a plurality of the output capacitors are connected in series to the plurality of the low-voltage ion needles and the voltage conversion module in a one-to-one correspondence. between.

In a second aspect, an electric flame cooker is provided, including a cooktop and the above-mentioned ionization combustion circuit provided with the cooktop.

In one of the embodiments, the cooktop includes a base and a cylindrical side wall extending upward from the base.

In one of the embodiments, the ignition module includes: a high-voltage ion needle and a first grounding needle corresponding to the high-voltage ion, and the high-voltage ion needle is used to control the first grounding needle according to the rectified voltage. Discharge; the high-voltage ion needle is arranged on the cylindrical side wall of the cooktop, and the first grounding needle is arranged on the base.

In one of the embodiments, the combustion module includes a plurality of low-pressure ion needles and a plurality of second grounding needles arranged in one-to-one correspondence with the plurality of low-pressure ion needles, and the low-pressure ion needles are respectively used to align with the plurality of low-pressure ion needles. The low-pressure ion discharges the corresponding second grounding needle; wherein the low-pressure ion needle and the second grounding needle array are arranged on the base.

Beneficial effect

The beneficial effects of the ionization combustion circuit provided by the embodiments of the present application are that it includes a voltage doubler rectifier module, an ignition module, and a combustion module. Since the voltage doubler rectifier module increases the driving voltage by N times to generate a rectified voltage, the ignition module is used to generate a rectified voltage according to the The rectified voltage is used for arc ignition. When the ignition module breaks down the air, the combustion module discharges to the ground under the drive of the driving voltage to maintain the continuous combustion of the heat source, so that only the ignition module is required for high-voltage arc ignition, while the combustion module is at a lower level. The combustion is maintained under the driving of the driving voltage, which reduces the working power of the circuit, saves energy, and reduces the high voltage resistance requirements of the device, and reduces the cost.

Description of the drawings

FIG. 1 is a schematic diagram of a module structure of an ionization combustion circuit provided by an embodiment of the present invention;

Fig. 2 is a schematic circuit diagram of an example of the isolation protection circuit shown in Fig. 1;

3 is a schematic diagram of another module structure of an isolation protection circuit provided by an embodiment of the present invention;

Fig. 4 is a schematic diagram of a three-dimensional structure of an electric flame cooker provided by an embodiment of the present invention.

Embodiments of the present invention

In order to make the purpose, technical solutions, and advantages of this application clearer, the following further describes this application in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the application, and not used to limit the application. At the same time, in the description of this application, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

It should be understood that when used in this specification and the appended claims, the term "comprising" indicates the existence of the described features, wholes, steps, operations, elements and/or components, but does not exclude one or more other features The existence or addition of, whole, step, operation, element, component and/or its collection.

It should also be understood that the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit the application. As used in the specification of this application and the appended claims, unless the context clearly indicates other circumstances, the singular forms "a", "an" and "the" are intended to include plural forms.

It should be further understood that the term "and/or" used in the specification and appended claims of this application refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations .

In order to illustrate the above-mentioned technical solutions of the present application, specific embodiments are used for description below.

FIG. 1 is a schematic diagram of the module structure of an ionization combustion circuit provided by an embodiment of the application. As shown in FIG. 1, the ionization combustion circuit provided by this application includes a power supply module 10, a voltage conversion module 20, a voltage doubler rectifier module 30, and an ignition The module 40 and the combustion module 50; the power module 10 is used to provide input voltage; the voltage conversion module 20 is connected to the power module 10 to convert the input voltage into a driving voltage; the voltage doubler rectifier module 30 is connected to the voltage conversion module 20 for The rectified voltage is generated according to the driving voltage; the ignition module 40 is connected to the voltage doubler rectifying module 30 for starting arc according to the rectified voltage; the combustion module 50 is connected to the voltage conversion module 20 for discharging to the ground according to the driving voltage.

The above-mentioned ionization combustion circuit includes a voltage doubler rectifier module 30, an ignition module 40, and a combustion module 50. Since the voltage doubler rectifier module 30 increases the driving voltage by N times to generate a rectified voltage, the ignition module 40 is used to start arc according to the rectified voltage Ignition, when the ignition module 40 breaks down the air, the combustion module 50 is driven by the driving voltage to discharge to the ground to maintain the continuous combustion of the heat source, so that only the ignition module 40 is required to perform high-voltage arc ignition, while the combustion module 50 is at a lower The combustion is maintained under the driving of the driving voltage, which reduces the working power of the circuit, saves energy, and reduces the high-voltage withstand requirements of the device and reduces the cost.

In one of the embodiments, the voltage conversion module 20 includes a transformer T1; the primary coil of the transformer T1 is the input voltage input terminal of the voltage conversion module 20, and the first end of the secondary coil of the transformer T1 is the driving voltage of the voltage conversion module 20 At the output end, the second end of the secondary winding of the transformer T1 is grounded.

In one of the embodiments, the rectified voltage is N times the driving voltage, where N is a positive integer greater than 3. In practical applications, in order to be able to penetrate the air, a sufficiently large discharge voltage is required. In order to simplify the circuit structure, this application performs rectification processing on the basis of the driving voltage, and amplifies the driving voltage by N times to meet the requirements of arc ignition. Voltage, in this embodiment, 3 times the driving voltage is selected as the discharge voltage for ignition, which can reduce the safety risk caused by high-voltage ignition while meeting the requirements of arc ignition.

In one of the embodiments, the voltage doubler rectifier module 30 includes: a first capacitor C1, a second capacitor C2, a third capacitor C3, a first diode D1, a second diode D2, and a third diode D3; The first terminal of the first capacitor C1 is the driving voltage input terminal of the voltage doubler rectifier module 30, the second terminal of the first capacitor C1 is connected to the first terminal of the third capacitor C3, and the first terminal of the third capacitor C3 is connected to the first capacitor The second terminal of C1, the second terminal of the third capacitor C3 is the rectified voltage output terminal of the voltage doubler rectifier module 30, the cathode of the first diode D1 is connected to the first terminal of the first capacitor C1, and the first diode D1 The anode of the first diode D1 is grounded, the anode of the first diode D1 is connected to the first end of the second capacitor C2, the cathode of the second diode D2 and the anode of the third diode D3 are both connected to the second end of the second capacitor C2, The anode of the second diode D2 is connected to the first end of the third capacitor C3, and the cathode of the third diode D3 is connected to the second end of the third capacitor C3. In the first half cycle of the driving voltage, the first diode D1 is turned on and the second diode D2 is turned off. The current passes through the first diode D1 to charge the first capacitor C1, and the voltage on the first capacitor C1 It is charged to the peak value of the driving voltage and remains basically unchanged. In the second half cycle of the driving voltage, the second diode D2 is turned on and the first diode D1 is turned off. At this time, the voltage on the first capacitor C1 is added in series with the driving voltage, and the current charges the second capacitor C2 through the second diode D2. The charging voltage is the sum of the peak value of the driving voltage and the voltage on the first capacitor C1. After repeated charging, the voltage on the second capacitor C2 is basically the sum of the peak value of the driving voltage and the voltage on the first capacitor C1, that is, twice the driving voltage. In the third half cycle, the first diode D1 and the third diode D3 are turned on, and the second diode D2 is turned off. In addition to charging the first capacitor C1 through the first diode D1, the current flows through The third diode D3 charges the third capacitor C3. The charging voltage on the third capacitor C3 is the sum of the peak value of the driving voltage and the voltage on the second capacitor C2, so that the second end of the third capacitor C3 can be Output rectified voltage to achieve triple voltage rectification.

In one of the embodiments, the ionization combustion circuit further includes a controllable switch 60 and a control module 70; the controllable switch 60 is connected between the voltage conversion module 20 and the voltage doubler rectifier module 30, and is used to turn on or turn off according to the control signal. Driving voltage; the control module 70 is connected to the controllable switch 60 for generating a control signal according to the user's input. In this embodiment, since the power supply of the ignition module 40 and the combustion module 50 is derived from the driving voltage, in actual applications, the ignition module 40 can stop the discharge and arc ignition after completing the ignition action, in order to reduce the risk of high voltage and save The energy, ionization combustion circuit is provided with a controllable switch 60 and a control module 70. When the control module 70 receives a user input (such as an ignition operation), the control module 70 generates a high-level control signal for a preset time to control the controllable The switch 60 is turned on. At this time, the voltage doubler rectifier module 30 generates a rectified voltage according to the driving voltage, and the ignition module 40 starts the arc according to the rectified voltage and starts the ignition action. After a preset time, the control module 70 generates a low-level control signal to The controllable switch 60 is turned off, the ignition module 40 has no voltage input, and the ignition module 40 stops discharging. The ignition module 40 and the voltage doubler rectifier module will only be energized when ignition is required to start the arc. This reduces the risk of high voltage and saves energy. It also increases the service life of the circuit.

In one of the embodiments, the ignition module 40 includes: a high-voltage ion needle P1 and a first ground pin G1 provided corresponding to the high-voltage ion needle P1. The high-voltage ion needle P1 is used to discharge the first ground pin G1 according to the rectified voltage. In practical applications, in order to achieve a better heating effect, a plurality of ion needles are provided in the embodiment of the present application to maintain discharge and combustion, while the ignition module 40 only needs one high-voltage ion needle P1 and a first grounding needle G1. When the ignition module 40 performs arc ignition, the high-voltage ion needle P1 discharges the first grounding needle G1 driven by the rectified voltage, and rapidly breaks down the air, and the plasma concentration in the air rises rapidly, thereby igniting other ion needles.

In one of the embodiments, the combustion module 50 includes the combustion module 50 including a plurality of low-pressure ion needles P2, a plurality of second grounding needles G2, and a plurality of output capacitors; the plurality of low-pressure ion needles P2 and a plurality of second The ground pins G2 are arranged in one-to-one correspondence, and the low-pressure ion pins P2 are respectively used to discharge the second ground pins G2 corresponding to the low-pressure ion pins P2, and a plurality of the output capacitors are connected in series in a one-to-one correspondence. Between the low-voltage ion needle P2 and the voltage conversion module 20.

Figure 3 will be further described below in conjunction with the working principle.

The power supply module 10 is used to output pulse voltage, and generates a driving voltage through the transformer T1 conversion. When receiving user input (such as ignition operation), the control module 70 outputs a high-level control signal for a preset time to control a controllable switch 60 The driving voltage is turned on, and the driving voltage is output to the voltage doubler rectifier module 30, through the first capacitor C1, the second capacitor C2, the third capacitor C3, the first diode D1, and the second diode in the voltage doubler rectifier module 30 The tube D2 and the third diode D3 perform rectification processing to generate a rectified voltage N times the driving voltage. The rectified voltage discharges arc to the first ground pin G1 through the high-voltage ion pin P1 in the ignition module 40, and breaks down the air. The plasma concentration in the air rises rapidly. At the same time, the plurality of low-pressure ion needles P2 in the combustion module 50 are driven by the driving voltage to discharge the plurality of second grounding needles G2, start burning and maintain the burning state, after a preset time , The control signal outputs a low-level control signal, and the controllable switch 60 is controlled to turn off, and the driving voltage is turned off. The high-voltage ion needle P1 outputs no voltage and stops discharging.

In addition, the present application also provides an electric flame stove, including a stovetop and the above-mentioned ionization combustion circuit arranged on the stovetop.

In one of the embodiments, the cooktop includes a base 100 and a cylindrical side wall 200 extending upward from the base.

In one of the embodiments, the combustion module 50 includes: a high-voltage ion needle P1 and a first ground pin G1 arranged corresponding to the high-voltage ion needle P1, the high-voltage ion needle P1 is used to discharge the first ground pin G1 according to the rectified voltage; The ion needle P1 is arranged on the cylindrical side wall 200 of the cooktop, and the first grounding needle G1 is arranged on the base 100.

In one of the embodiments, the ignition module 40 includes a plurality of low-pressure ion needles P2 and a plurality of second grounding needles G2 arranged in one-to-one correspondence with the plurality of low-pressure ion needles P2. The low-pressure ion needles P2 are respectively used for pairing with the low-pressure ion needles. The second ground pin G2 corresponding to P2 discharges; wherein the low-pressure ion pin P2 and the second ground pin G2 are arrayed on the base 100.

In summary, this application provides an ionization combustion circuit and electric flame stove, including a voltage doubler rectifier module, an ignition module, and a combustion module. Since the voltage doubler rectifier module increases the driving voltage by N times to generate a rectified voltage, the ignition module is used for Arc ignition is performed 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 the continuous combustion of the heat source, so that only the ignition module is required for high-voltage arc ignition, while the combustion module is The combustion is maintained under the driving of low driving voltage, which reduces the working power of the circuit, saves energy, and reduces the requirement for high voltage resistance of the device and reduces the cost.

The above descriptions are only the preferred embodiments of this application and are not intended to limit this application. Any modification, equivalent replacement and improvement made within the spirit and principle of this application shall be included in the protection of this application. Within range.

Claims

An ionization combustion circuit, characterized in that, the ionization combustion circuit includes:

Power module used to provide input voltage;

A voltage conversion module connected to the power supply module and used to convert the input voltage into a driving voltage;

A voltage doubler rectifier module connected to the voltage conversion module and used to generate a rectified voltage according to the driving voltage;

An ignition module connected to the voltage doubler rectifier module and used for arc ignition according to the rectified voltage;

A combustion module connected to the voltage conversion module and used for discharging to the ground according to the driving voltage.
The ionization combustion circuit of claim 1, wherein the voltage conversion module comprises: a transformer;

The primary coil of the transformer is the input voltage input terminal of the voltage conversion module, the first terminal of the secondary coil of the transformer is the drive voltage output terminal of the voltage conversion module, and the secondary coil of the transformer is The second end is grounded.
The ionization combustion circuit of claim 1, wherein the rectified voltage is N times the driving voltage, wherein N is a positive integer greater than 3.
The ionization combustion circuit of claim 1, wherein the voltage doubler rectifier module comprises: a first capacitor, a second capacitor, a third capacitor, a first diode, a second diode, and a third capacitor. Pole tube

The first terminal of the first capacitor is the driving voltage input terminal of the voltage doubler rectifier module, the second terminal of the first capacitor is connected to the first terminal of the third capacitor, and the first terminal of the third capacitor is Terminal is connected to the second terminal of the first capacitor, the second terminal of the third capacitor is the rectified voltage output terminal of the voltage doubler rectifier module, and the cathode of the first diode is connected to the At the first end, the anode of the first diode is grounded, the anode of the first diode is connected to the first end of the second capacitor, the cathode of the second diode and the third The anode of the pole tube is connected to the second end of the second capacitor, the anode of the second diode is connected to the first end of the third capacitor, and the cathode of the third diode is connected to the third capacitor. The second end of the capacitor.
The ionization combustion circuit of claim 1, further comprising:

A controllable switch connected between the voltage conversion module and the voltage doubling rectifier module and used for turning on or turning off the driving voltage according to a control signal;

A control module connected to the controllable switch and used to generate the control signal according to the user's input.
The ionization combustion circuit according to claim 1, wherein the ignition module comprises: a high-voltage ion needle and a first grounding needle corresponding to the high-voltage ion, and the high-voltage ion needle is used to respond to the rectification The voltage discharges the first ground pin.
The ionization combustion circuit of claim 1, wherein the combustion module includes a plurality of low-pressure ion needles, a plurality of second grounding needles, and a plurality of output capacitors; a plurality of the low-pressure ion needles and a plurality of second The ground pins are arranged in one-to-one correspondence, and the low-voltage ion needles are respectively used to discharge the second ground pins corresponding to the low-voltage ions, and a plurality of the output capacitors are connected in series to a plurality of the low-voltage ions in a one-to-one correspondence. Between the ion needle and the voltage conversion module.
An electric flame stove, characterized by comprising a stovetop and the ionization combustion circuit according to any one of claims 1 to 7 provided with the stovetop.
8. The electric flame cooker of claim 8, wherein the cooktop includes a base and a cylindrical side wall extending upward from the base.
The electric flame cooker according to claim 9, wherein the ignition module comprises: a high-voltage ion needle and a first grounding needle corresponding to the high-voltage ion counter, and the high-voltage ion needle is used for rectifying according to the The voltage discharges the first ground needle; the high-voltage ion needle is arranged on the cylindrical side wall of the cooktop, and the first ground needle is arranged on the base.
The electric flame stove of claim 9, wherein the combustion module comprises a plurality of low-pressure ion needles and a plurality of second grounding needles arranged one by one with the plurality of low-pressure ion needles, and the low-pressure ion needles They are respectively used for discharging the second grounding needles corresponding to the low-pressure ions; wherein the low-pressure ion needles and the second grounding needle array are arranged on the base.