CN206077715U

CN206077715U - A kind of electromagnetic heating apparatus of inexpensive EMC circuits

Info

Publication number: CN206077715U
Application number: CN201620698915.9U
Authority: CN
Inventors: 郝晋兵
Original assignee: SHENZHEN GREENMCU TECHNOLOGY Co Ltd
Current assignee: SHENZHEN GREENMCU TECHNOLOGY Co Ltd
Priority date: 2016-07-05
Filing date: 2016-07-05
Publication date: 2017-04-05
Anticipated expiration: 2026-07-05

Abstract

A kind of electromagnetic heating apparatus of inexpensive EMC circuits, including exchange input module, rectification module, filtration module, LC resonance modules, IGBT module, synchronization module, voltage sample module, Switching Power Supply electricity-fetching module, switch power module and central processor MCU；The filtration module includes the second inductance, and the input of second inductance connects the outfan of rectification module, and the Switching Power Supply electricity-fetching module is connected with the outfan of the second inductance in the filtration module.The inexpensive EMC circuits that the application is proposed have been put into the position to take power of Switching Power Supply electricity-fetching module in the case where the function of EMC circuits is not affected the outfan of the second inductance, can remove the inductance in original common mode/differential mode module, reduce production cost.

Description

A kind of electromagnetic heating apparatus of inexpensive EMC circuits

Technical field

This utility model is related to electromagnetic heating technique field, more particularly, it relates to a kind of inexpensive adds for electromagnetism The electromagnetic heating apparatus of EMC circuits in thermal control circuit.

Background technology

Existing electromagnetic heating apparatus control circuit mainly includes exchange input module, difference mode/common mode module, rectification mould Block, filtration module, synchronization module, voltage sample module, relay control module, Switching Power Supply electricity-fetching module, LC resonance modules, IGBT module and control unit MCU composition, relay control module control cut-offfing for filtered electrical perhaps major loop, EMC filtering Electric capacity and inductance composition filter circuit module, remove interference and clutter, but existing electromagnetic heating apparatus control circuit are former Part is more, and trouble point is more, and production maintenance difficulty is big, and production cost is high.

Utility model content

This utility model is more for existing existing components and parts, and the high problem of production cost proposes a kind of inexpensive EMC The electromagnetic heating apparatus of (Electro Magnetic Compatibility, Electro Magnetic Compatibility) circuit.

This utility model provide a kind of inexpensive EMC circuits electromagnetic heating apparatus, including exchange input module, to hand over The alternating current of stream input module output carries out the rectification module of rectification, exports the filtering mould that direct current is filtered to rectification module Block, LC resonance modules, IGBT module, synchronization module, voltage sample module, for the Switching Power Supply power taking of switch power module power taking Module, switch power module and central processor MCU；The filtration module includes the second inductance, second inductance it is defeated Enter the outfan of end connection rectification module, the outfan of the Switching Power Supply electricity-fetching module and the second inductance in the filtration module Connection.

According to a kind of electromagnetic heating apparatus of inexpensive EMC circuits described in the utility model, the Switching Power Supply power taking Module include diode, relative to first resistor in the exchange input module, in the filtration module second resistance the 3rd Resistance and electrochemical capacitor；The diode is connected with the 3rd resistor, the 3rd resistor be connected to diode with it is described The centre of plug-in module, the plug-in module are connected with the input of the switch power module and the electrochemical capacitor, described The output head grounding of electrochemical capacitor.

According to a kind of electromagnetic heating apparatus of inexpensive EMC circuits described in the utility model, the exchange input module Outfan be connected with the input of the rectification module and the voltage sample module respectively, the outfan of the rectification module It is connected with the input of the filtration module, the outfan of the filtration module is connected with the LC resonance modules, and the LC is humorous The outfan of module of shaking is connected with the input of the IGBT module and the synchronization module respectively, the voltage sample module and The outfan of the synchronization module is connected with central processor MCU.

According to a kind of electromagnetic heating apparatus of inexpensive EMC circuits described in the utility model, the Switching Power Supply power taking The outfan of module is connected with the input of the switch power module.

According to a kind of electromagnetic heating apparatus of inexpensive EMC circuits described in the utility model, the filtration module includes Be parallel to the first electric capacity of rectification module outfan, relative first electric capacity it is in parallel and be connected with the second inductance output end it is second electric Hold and the second inductance in the middle of the first electric capacity and the second electric capacity, the outfan of first electric capacity and the rectification module It is connected in parallel, for the interference in absorbing circuit, the input of second inductance is connected with one end of the output of rectification module Connection, outfan is connected with second electric capacity, one end of second electric capacity with second inductance connection and relative to First electric capacity is connected in the outlet side of the rectification module, first and second electric capacity and the second inductance composition institute in parallel Filtration module is stated, EMC circuits are filtered.

According to a kind of electromagnetic heating apparatus of inexpensive EMC circuits described in the utility model, the filtration module also may be used It is connected by second inductance and with the second inductance output end and constitutes relative to rectification module the second electric capacity in parallel.

According to a kind of electromagnetic heating apparatus of inexpensive EMC circuits described in the utility model, the inexpensive EMC circuits Electromagnetic heating apparatus include all of Electromagnetic Heating product.

Beneficial effect

Implement the electromagnetic heating apparatus of a kind of inexpensive EMC circuits that this utility model is provided, do not affect circuit filtering In the case of function, the inductance in existing common-mode circuit/differential mode circuit is eliminated, circuit is simplified, make Switching Power Supply power taking mould Block the second inductance outfan power taking, not only simplify circuit, make circuit be easy to safeguard, and greatly reduce circuit life Produce cost.

Description of the drawings

Below in conjunction with drawings and Examples, the utility model is described in further detail, in accompanying drawing：

Fig. 1 is the electromagnetic heating apparatus module connection diagram of EMC circuits of the prior art

Fig. 2 is the module connection diagram of the electromagnetic heating apparatus of the EMC circuits in the present embodiment

Fig. 3 is that the element of common mode EMC circuit of the prior art constitutes schematic diagram

Fig. 4 is that the element of differential mode EMC circuits of the prior art constitutes schematic diagram

Fig. 5 is that the element of the Switching Power Supply power-supply circuit and filter circuit of the EMC circuits in the present embodiment constitutes schematic diagram

Specific embodiment

Fig. 1 is the electromagnetic heating apparatus module connection diagram of EMC circuits of the prior art, during Fig. 2 is the present embodiment EMC circuits electromagnetic heating apparatus module connection diagram, Fig. 3 is the element structure of common mode EMC circuit of the prior art Into schematic diagram, Fig. 4 is that the element of differential mode EMC circuits of the prior art constitutes schematic diagram, refer to Fig. 1-Fig. 4, the one of proposition The electromagnetic heating apparatus for planting EMC circuits include exchanging input module 101a, for the alternating current (AC) of input is converted into direct current Electric (DC), the rectification module 101b used for load and humorous for absorbing filtration module 101c, LC of clutter in input voltage Shake module 101d, for the switching pulse of the IGBT module 102 in circuit is synchronous with potential pulse holding and enter data into Synchronization module 103, IGBT module 102 in MCU, the electricity for the voltage signal in electromagnetic heating apparatus to be given MCU106 Press sampling module 104, obtain the Switching Power Supply electricity-fetching module 105 of Switching Power Supply and for various signal datas in process circuit CPU MCU106.

The outfan of exchange input module 101a is connected with the input of rectification module 101b, and rectification module 101b is connected to The centre of exchange input module 101a and filtration module 101c, outfan and the LC resonance modules 101d of filtration module 101c connect Connect, the outfan of LC resonance modules 101d is connected with IGBT module 102 and synchronization module 103 respectively, and EMC of the prior art is electric The electromagnetic heating apparatus on road include complete relay control module, the Switching Power Supply for controlling electric capacity C1 switches in exchange input module Electricity-fetching module and common mode/differential mode exchange input module, the electromagnetic heating apparatus of the EMC circuits in the present embodiment are not affecting The electric capacity C1 in exchange input module is moved on to into the defeated of rectification module 101b in the case of the electromagnetic heating apparatus function of EMC circuits Go out side, while eliminating control relay circuit, and simplify 105 circuit of Switching Power Supply electricity-fetching module and common mode/differential mode mould Block circuit, greatly reduces production cost.

The input of synchronization module 103 is connected with the outfan of IGBT module 102, outfan and CPU (MCU) connect, for the switching pulse of the IGBT module 102 in circuit is synchronous with potential pulse holding and enter data into In MCU；The input of IGBT module 102 is connected with the outfan of filtration module 101c, and outfan is connected with load, for controlling Electromagnetic heating apparatus conducting and shut-off；The input of voltage sample module 104 is connected with exchange input module, outfan It is connected with MCU, for sending voltage signal to MCU106, MCU106 is protected to circuit or breakdown judge again；Switch The input of power supply electricity-fetching module 105 is connected with the outfan of filtration module 101c, for obtaining Switching Power Supply；Central authorities process single The input of first MCU106 is connected with sampling module 104 and synchronization module 103, with the electromagnetic heating apparatus for processing EMC circuits In various signal datas.

Switching Power Supply electricity-fetching module 105 is connected to the outfan of the second inductance L2, and alternating current is whole through rectification module 101b Unidirectional current is exported after stream, unidirectional current is transferred to Switching Power Supply electricity-fetching module 105 and LC resonance after the second inductance L2 filtering Module 101d, Switching Power Supply electricity-fetching module 105 is by DC power transmission to switch power module U.Switching Power Supply electricity-fetching module takes Electric position simplifies the complexity of original circuit, reduces the use of element, greatly reduces production cost.

Those skilled in the art know that Switching Power Supply electricity-fetching module 105 is used to obtain the unidirectional current in circuit, position to take power A part of components and parts can also be increased in the case where cost is disregarded and inductance L2 is not shared with circuit, still can reach power taking Purpose.

In this utility model embodiment, exchange input module 101a is by multiple resistance, electric capacity or other conventional devices Part composition without inductance input circuit, for removing circuit interference, stabilizing circuit input voltage.

In this utility model embodiment, filtration module 101c includes that the first electric capacity C1, the second electric capacity C2 and second are electric Sense L2, the outfan of the first electric capacity C1 and rectification module 101b is connected in parallel, for the interference in absorbing circuit, the second inductance L2 Input be connected in series with one end of the output of rectification module 101b, outfan is connected with the second electric capacity C2, the second electric capacity One end of C2 is connected and is connected in parallel relative to the first electric capacity C1 the outlet side of rectification module 101b with the second inductance L2, the First, the electromagnetic heating apparatus of EMC circuits are filtered by two electric capacity (C1, C2) and the second inductance L2 composition filtration module 101c Ripple, filtration module 101c eliminate the control relay circuit of control the first electric capacity C1 switches, greatly reduce the electricity of EMC circuits Element in magnetic firing equipment, reduces production cost.

The electromagnetic heating apparatus of a kind of inexpensive EMC circuits provided according to this utility model, the filtration module 101c Also can be connected by the second inductance L2 and with the second inductance L2 outfans and relative to rectification module 101c it is in parallel second Electric capacity C2 is constituted.

Those skilled in the art know that filtration module 101c is used to filter off the ripple in rectifier output voltage, the present embodiment In filtration module 101c be made up of the one or two electric capacity (C1, C2) and the second inductance L2, it is also possible to by increasing or decreasing parallel connection The compound circuit composition filtration module of capacitor and the second inductance L2 compositions replaces, it is also possible to by increasing or decreasing series reactor L is replaced with the compound circuit of shunt capacitance composition, it is also possible to by electric capacity, the various compound filter circuit generation of inductance composition Replace.

In the present embodiment, Switching Power Supply electricity-fetching module 105 includes diode D1,3rd resistor R3, plug-in module and opens Powered-down source module U, in the outfan power taking of the second inductance L2, has reached the mesh for making full use of the second inductance L2, saving element 's.

The electromagnetic heating apparatus that above-mentioned this utility model is provided, can be used for all of Electromagnetic Heating product, such as Electromagnetic Heating Stove, Electromagnetic Heating kettle, electromagnetic heating pot etc..

Although the foregoing describing various embodiments of the present utility model, it will be appreciated that its purpose is merely to illustrate this Utility model, rather than to restriction of the present utility model.Those skilled in the art knows, without departing from essence of the present utility model Under god and ambit, various changes can be also made in the form and details.Therefore, protection domain of the present utility model is improper Embodiments described above is limited only to, and should be limited according to claim and its equivalent.

Claims

1. a kind of electromagnetic heating apparatus of inexpensive EMC circuits, it is characterised in that including exchange input module (101a), to handing over The alternating current that stream input module (101a) is exported carries out the rectification module (101b) of rectification, rectification module output direct current is carried out The filtration module (101c) of filtering, LC resonance modules (101d), IGBT module (102), synchronization module (103), voltage sample mould Block (104), the Switching Power Supply electricity-fetching module (105) for switch power module U power takings, switch power module (U) and centre Reason device MCU (106)；The filtration module (101c) includes the second inductance L2, the input connection rectification of the second inductance L2 The outfan of module (101b), the Switching Power Supply electricity-fetching module (105) and the second inductance L2 in the filtration module (101c) Outfan connection.

2. electromagnetic heating apparatus according to a kind of inexpensive EMC circuits described in claim 1, it is characterised in that described to open Powered-down source electricity-fetching module (105) is including diode D1,3rd resistor R3 and electrochemical capacitor C3；The diode D1 and described Three resistance R3 connect, and 3rd resistor R3 is connected to the centre of diode D1 and plug-in module CN, the plug-in module CN and The input connection of the switch power module U and the electrochemical capacitor C3, the output head grounding of the electrochemical capacitor C3.

3. electromagnetic heating apparatus according to a kind of inexpensive EMC circuits described in claim 1, it is characterised in that the friendship The input respectively with the rectification module (101b) and the voltage sample module (104) of the outfan of stream input module (101a) End connection, the outfan of the rectification module (101b) are connected with the input of the filtration module (101c), the filtering mould The outfan of block (101c) is connected with the LC resonance modules (101d), the outfan of the LC resonance modules (101d) respectively with The input connection of the IGBT module (102) and the synchronization module (103), the voltage sample module (104) and described Synchronization module (103) is connected with central processor MCU (106).

4. electromagnetic heating apparatus according to a kind of inexpensive EMC circuits described in claim 1, it is characterised in that described to open The outfan of powered-down source electricity-fetching module (105) is connected with the input of the switch power module U.

5. electromagnetic heating apparatus according to a kind of inexpensive EMC circuits described in claim 1, it is characterised in that the filter Ripple module (101c) is in parallel and electric with second including the first electric capacity C1, the relative first electric capacity C1 for being parallel to rectification module outfan The second electric capacity C2 and the second inductance L2 in the middle of the first electric capacity C1 and the second electric capacity C2 of sense L2 outfan connections, it is described First electric capacity C1 is connected in parallel with the outfan of the rectification module (101b), for the interference in absorbing circuit, described second The input of inductance L2 is connected in series with one end of the output of rectification module (101b), and outfan is connected with the second electric capacity C2 Connect, one end of the second electric capacity C2 is connected with the second inductance L2 and is connected in institute in parallel relative to the first electric capacity C1 The outlet side of rectification module (101b) is stated, first and second electric capacity (C1, C2) and the second inductance L2 constitute the filtration module (101c)。

6. electromagnetic heating apparatus of a kind of inexpensive EMC circuits according to any one of claim 1-5, its feature exist In the filtration module (101c) also can be connected and relative to whole by the second inductance L2 and with the second inductance L2 outfans Flow module (101b) the second electric capacity C2 in parallel is constituted.