CN206585777U - A kind of half-bridge electromagnetic oven circuit - Google Patents
A kind of half-bridge electromagnetic oven circuit Download PDFInfo
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- CN206585777U CN206585777U CN201720116916.2U CN201720116916U CN206585777U CN 206585777 U CN206585777 U CN 206585777U CN 201720116916 U CN201720116916 U CN 201720116916U CN 206585777 U CN206585777 U CN 206585777U
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Abstract
The utility model provides a kind of half-bridge electromagnetic oven circuit, including the power supply being sequentially connected, current rectifying and wave filtering circuit, switching power circuit, half-bridge power tube drive circuit, LC oscillating circuits, the half-bridge power tube drive circuit also examines pot circuit, MCU formation backfeed loops by pulse.The electromagnetic oven that 110V described in the utility model~and 220V~two kind voltage section can be used can meet and can be used in different local different voltage, be avoided that because of the phenomenon that wrong plug voltage causes electromagnetic oven to burn out, it is to avoid because the difference of voltage purchases new electromagnetic oven；Half-bridge electromagnetic oven circuit described in the utility model is voltage pulsation is big, more than clutter in the case of work more stable, quality is more secure；Pan can preferably be recognized.
Description
Technical field
The utility model belongs to electromagnetic oven kitchen tool apparatus field, more particularly, to a kind of half-bridge electromagnetic oven circuit.
Background technology
It is general in 2 voltage sections in different countries and regions household electricities, it is 100V~-120V~and 220V respectively
~-240V~, half-bridge electromagnetic oven typically examines pot using current detecting pan mode, normal in a voltage section can only recognize pot
Has size.The control of electric current inspection pot does not with great difficulty occur inspection pot and fries power tube phenomenon.
The electromagnetic oven used in 110V~voltage section 220V~on can not normally use, pot electric current is excessive causes for some inspections
Electromagnetic oven is burnt out.The electromagnetic oven used in 220V~voltage section 110V~on can not normally detect pan or can't detect pot
Tool.Domestic single tube electromagnetic oven uses that pulse inspection pot is more, and pan identification is preferable, and is not in that inspection pot burns machine and showed
As, but single tube electromagnetic oven circuit is unable to low-power laser heating, the bad control of power.
The content of the invention
In view of this, the utility model is directed to a kind of half-bridge electromagnetic oven circuit, to ensure not burn out machine during inspection pot,
Power tube is not damaged, can normally be used in 110V~voltage section and 220V~voltage section.
To reach above-mentioned purpose, what the technical solution of the utility model was realized in：
A kind of half-bridge electromagnetic oven circuit, including power supply, current rectifying and wave filtering circuit, switching power circuit, the half-bridge being sequentially connected
Power tube drive circuit, LC oscillating circuits, the half-bridge power tube drive circuit are also examined pot circuit, MCU by pulse and formed instead
It is fed back to road.
Further, the switching power circuit includes rectifier bridge, transformer, the voltage-stablizer being sequentially connected.
Further, the half-bridge power tube drive circuit includes 2 power tube driven controls.
Further, the pulse inspection pot circuit passes through comparator detection inspection pot umber of pulse.
Relative to prior art, a kind of half-bridge electromagnetic oven circuit described in the utility model has the advantage that：This practicality
The electromagnetic oven that the new 110V~and 220V~two kind voltage section can be used can be met in different local different voltage all
It can use, be avoided that because of the phenomenon that wrong plug voltage causes electromagnetic oven to burn out, it is to avoid because the difference of voltage purchases new electromagnetic oven；This
Half-bridge electromagnetic oven circuit described in utility model is voltage pulsation is big, more than clutter in the case of work more stable, quality more has guarantor
Barrier；Pan can preferably be recognized.
Brief description of the drawings
Constitute a part of accompanying drawing of the present utility model to be used for providing further understanding to of the present utility model, this practicality is new
The schematic description and description of type is used to explain the utility model, does not constitute to improper restriction of the present utility model.
In accompanying drawing：
Fig. 1 is a kind of connection diagram of half-bridge electromagnetic oven circuit described in the utility model embodiment；
Fig. 2 is the switching power circuit schematic diagram described in the utility model embodiment；
Fig. 3 is the half-bridge power tube drive circuit schematic diagram described in the utility model embodiment；
Fig. 4 is the pulse inspection pot circuit diagram described in the utility model embodiment.
Embodiment
It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the utility model can
To be mutually combined.
In description of the present utility model, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " on ", " under ",
The orientation or position relationship of the instruction such as "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom ", " interior ", " outer " are
Based on orientation shown in the drawings or position relationship, it is for only for ease of description the utility model and simplifies description, rather than indicate
Or imply that the device or element of meaning must have specific orientation, with specific azimuth configuration and operation, therefore be not understood that
For to limitation of the present utility model.In addition, term " first ", " second " etc. are only used for describing purpose, and it is not intended that indicating
Or imply relative importance or the implicit quantity for indicating indicated technical characteristic.Thus, " first ", " second " etc. are defined
Feature can express or implicitly include one or more this feature.In description of the present utility model, unless separately
It is described, " multiple " are meant that two or more.
, it is necessary to which explanation, unless otherwise clearly defined and limited, term " are pacified in description of the present utility model
Dress ", " connected ", " connection " should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integratedly
Connection；Can be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected to by intermediary,
It can be the connection of two element internals.For the ordinary skill in the art, on being understood by concrete condition
State concrete meaning of the term in the utility model.
Describe the utility model in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
As shown in Figure 1,2,3, 4, a kind of half-bridge electromagnetic oven circuit, including be sequentially connected power supply, current rectifying and wave filtering circuit, open
Powered-down source circuit, half-bridge power tube drive circuit, LC oscillating circuits, the half-bridge power tube drive circuit also examine pot by pulse
Circuit, MCU formation backfeed loops.
The switching power circuit includes rectifier bridge, transformer, the voltage-stablizer being sequentially connected.
The half-bridge power tube drive circuit includes 2 power tube driven controls.
The pulse inspection pot circuit passes through comparator detection inspection pot umber of pulse.
In order to ensure electromagnetic oven is in 110V~and 220V~two voltage section power adjustable and power stability output, using half
Bridge power control mode, half-bridge power control mode control power is more reliable, and Power Control is more convenient.
In order to ensure electromagnetic oven is normal in 110V~and the detection of 220V~two voltage section and identification pan, without using tradition
Electric current inspection pot, using pulse examine pot, prevent because voltage broaden inspection pot electric current it is excessive examine pot when electromagnetic oven damage.Pot is examined in pulse
The pan that can be detected is more, and scope is bigger, and inspection pot is safer.Using new pulse inspection pot circuit on half-bridge electromagnetic oven, pass through
The direct connection of single power, drum and resonant capacitance have energy concussion attenuation process, therefore energy very little, pass through transformer
Signal amplifies 3000 times, can detect energy attenuation pulse, different pan decay umber of pulses and time can be different, by this
Umber of pulse, it is possible to achieve half-bridge circuit pulse detection pan.Different pan pulses during half-bridge circuit Spontaneous release energy will be detected
The difference of the number of decay is identified and judged to pan.This inspection pot circuit because only opens single pipe, and big loop there is not connection, do not had
High current, high-power components are not in the phenomenon that electric current examines the excessive damage of pot electric current.
The utility model turns to input using 80VAC to 265VAV on low-voltage dc circuit in high pressure turns 24VDC's and 12VDC
Switch power supply current scheme, it is ensured that the stable output of DC voltage.Detect that the voltage of input voltage becomes in real time by bleeder circuit
Change.Detect the change of low-frequency current and high frequency electric in real time by transformer.Can quickly it be detected using 16MHz working frequency
The change of electric current and voltage adjusts IGBT control FREQUENCY CONTROLs and firm power output in real time.Pass through half bridge control control half
Power tube is turned under bridge, and examining pot circuit by pulse makes drum and resonant capacitance shake naturally, drum concussion pulse is occurred, leads to
Cross transformer to amplify pulse signal, the pulse change of high frequency electric, can precisely sentence when detecting electromagnetic oven inspection pot using comparator
The material and size of disconnected pan.
Preferred embodiment of the present utility model is the foregoing is only, it is all at this not to limit the utility model
Within the spirit and principle of utility model, any modification, equivalent substitution and improvements made etc. should be included in the utility model
Protection domain within.
Claims (4)
1. a kind of half-bridge electromagnetic oven circuit, it is characterised in that：Including the power supply, current rectifying and wave filtering circuit, Switching Power Supply being sequentially connected
Circuit, half-bridge power tube drive circuit, LC oscillating circuits, the half-bridge power tube drive circuit also by pulse examine pot circuit,
MCU formation backfeed loops.
2. a kind of half-bridge electromagnetic oven circuit according to claim 1, it is characterised in that：The switching power circuit include according to
Rectifier bridge, transformer, the voltage-stablizer of secondary connection.
3. a kind of half-bridge electromagnetic oven circuit according to claim 1, it is characterised in that：The half-bridge power tube drive circuit
Including 2 power tube driven controls.
4. a kind of half-bridge electromagnetic oven circuit according to claim 1, it is characterised in that：Pulse inspection pot circuit by than
Compared with device detection inspection pot umber of pulse.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720116916.2U CN206585777U (en) | 2017-02-08 | 2017-02-08 | A kind of half-bridge electromagnetic oven circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720116916.2U CN206585777U (en) | 2017-02-08 | 2017-02-08 | A kind of half-bridge electromagnetic oven circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206585777U true CN206585777U (en) | 2017-10-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720116916.2U Active CN206585777U (en) | 2017-02-08 | 2017-02-08 | A kind of half-bridge electromagnetic oven circuit |
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| CN (1) | CN206585777U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108650726A (en) * | 2018-06-19 | 2018-10-12 | 九阳股份有限公司 | The half-bridge circuit and electromagnetic heater of electromagnetic heater |
| WO2022143248A1 (en) * | 2020-12-29 | 2022-07-07 | 佛山市顺德区美的电热电器制造有限公司 | Half-bridge-drive heating cookware detection circuit, heating device, cookware detection method, and storage medium |
-
2017
- 2017-02-08 CN CN201720116916.2U patent/CN206585777U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108650726A (en) * | 2018-06-19 | 2018-10-12 | 九阳股份有限公司 | The half-bridge circuit and electromagnetic heater of electromagnetic heater |
| WO2022143248A1 (en) * | 2020-12-29 | 2022-07-07 | 佛山市顺德区美的电热电器制造有限公司 | Half-bridge-drive heating cookware detection circuit, heating device, cookware detection method, and storage medium |
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