CN202103595U - Double voltage power circuit and inverter welder comprising same - Google Patents
Double voltage power circuit and inverter welder comprising same Download PDFInfo
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- CN202103595U CN202103595U CN2011201703631U CN201120170363U CN202103595U CN 202103595 U CN202103595 U CN 202103595U CN 2011201703631 U CN2011201703631 U CN 2011201703631U CN 201120170363 U CN201120170363 U CN 201120170363U CN 202103595 U CN202103595 U CN 202103595U
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Abstract
The utility model discloses a double voltage power circuit which comprises a power input end and a power output end, a rectification current and a voltage-multiplying circuit are connected between the input end of the power and the output end of the power in series, and the double voltage power circuit also comprises a control transformer connected with the input end of the power as well as a power control circuit and a voltage detection circuit that are connected with the control transformer; and the power control circuit comprises a first relay arranged between the power input end and the control transformer, and a second relay arranged between the power input end and the rectification circuit as well as the voltage-multiplying circuit, the control transformer is provided with a 220V primary winding and a 380V primary winding, and the voltage-multiplying circuit comprises two groups of capacitance resistor circuits that are in series connection. The inverter welder can be used where has 380V or 220V power, thus being very convenient, the inverter welder has good radiation effect, all parts can be connected by the shortest line, and as a rectification panel adopts an integrated output piece, the fault of the rectification panel is lowered.
Description
Technical field
The utility model relates to the power circuit of a kind of pair of voltage, more particularly is meant a kind of power circuit that can connect 380V and two kinds of power supplys of 220V, and by its inverter type welder that constitutes.
Background technology
In the prior art, the power supply of domestic all kinds of electric equipment products uses specification to have two kinds usually, and a kind of is 380V, and a kind of is 220V, for the ease of adopting the power supply of different size, can adopt a manual switch that switches usually, is used to select the power supply of different size.Yet, in the time of manual the switching, go wrong easily, before using, when power supply is switched in the 220V shelves, possibly not have directly to insert the power supply of 380V under the situation about judging such as electric equipment products, this situation can burn out power circuit.In addition owing to adopt the switch of manual switching; Except will before using power supply, carrying out artificial judgment, also need carry out manual operations, program is more miscellaneous; Owing to need to adopt the manual switch that switches; Also cause the structure of power circuit more complicated, cost has also risen, and uses on the contrary to bother more.
Based on the defective of above-mentioned prior art, I develop a kind of power circuit that can between the power supply of two kinds of voltages, switch automatically, and by its inverter type welder that constitutes.
The utility model content
The purpose of the utility model is to overcoming the defective of prior art, and a kind of power circuit that can between the power supply of two kinds of voltages, switch automatically is provided, and by its inverter type welder that constitutes.
For realizing above-mentioned purpose, the utility model adopts following technical scheme:
The power circuit of two voltages; Comprise power input and power output end; Be in series with rectification circuit and voltage-multiplying circuit between power input and the power output end, also comprise the control transformer that connects with power input, and the power control circuit, the voltage detecting circuit that connect with control transformer; Described power control circuit comprises first relay of being located between power input and the control transformer, and is located at second relay between power input and rectification circuit, the voltage-multiplying circuit; Described control transformer is provided with 220V former limit winding and the former limit of 380V winding, and described voltage-multiplying circuit comprises the capacitance resistance circuit of two groups of series connection.
Its further technical scheme is: the normally-closed contact of said first relay connects with power input, the former limit of 380V winding, and the normally opened contact of first relay connects with power input, the former limit of 220V winding; The normally-closed contact of said second relay connects with the input of power input, rectification circuit, and the normally opened contact of second relay connects with the series connection point of power input, two groups of capacitance resistance circuit.
Its further technical scheme is: said voltage detecting circuit comprises the test side that connects with the secondary of control transformer, and the output that connects with power control circuit; Be provided with voltage stabilizing circuit between said power control circuit and the control transformer.
Its further technical scheme is: described capacitance resistance circuit comprises electric capacity, the resistance of a plurality of parallel connections.
Its further technical scheme is: also be provided with soft starting circuit between the described power input and second relay, described power control circuit also comprises the 3rd relay.
Its further technical scheme is: described soft starting circuit comprises thermistor, and the normally opened contact of said the 3rd relay is parallelly connected with thermistor.
Its further technical scheme is: described voltage stabilizing circuit comprises the LM7812 chip, and described voltage detecting circuit is the triode voltage sample circuit, and described power control circuit also comprises LM358 chip and transistor drive circuit.
A kind of inverter type welder that is provided with the double-voltage electric power circuit is characterized in that comprising the power circuit of two voltages.
Its further technical scheme is: also be provided with the squirrel-cage rectifier structure; Described squirrel-cage rectifier structure comprises the cowling panel of being located at the bottom, is located at the inversion assembly on top and is located at the radiator of two sides; Described radiator is that both sides are provided with the aluminium section bar that fin, centre are provided with cavity; Described cavity is equipped with aforesaid cowling panel down in the cavity.
Its further technical scheme is: described cowling panel is provided with the out splice going splice more than two, and described out splice going splice is that welded type integral body connects with the cowling panel body.Described out splice going splice extends outward 3.5～5cm from the cowling panel body.
The utility model beneficial effect compared with prior art is: the utility model is owing to adopted voltage detecting circuit; Voltage to power input detects; When detecting input voltage and being 380V; The former limit winding of control transformer is selected the 380V union end of acquiescence, and rectification circuit directly connects with power output end; When detecting input voltage and be 220V; The former limit winding of control transformer switches to the 220V union end; And between rectification circuit and power output end, insert voltage-multiplying circuit, form rectification multiple pressuring circuit, thereby guaranteed when the input power supply is 220V; The voltage of control circuit and the output end voltage of main circuit are with input power supply the same when being 380V; Realize the automatic switchover of the two voltages of 380V/220V.The utility model inverter type welder had both adopted the power circuit of two voltages; Also adopt mouse cage type structure; Wherein inversion assembly, cowling panel and radiator are combined; And the out splice going splice of cowling panel has also adopted the certain distance that stretches out, and (protruding 3.5～5cm) monolithic construction makes the utility model inverter type welder all can use in the place with 380V or 220V power supply, and is very convenient; Both had better heat radiating effect, and made the line between each parts the shortest again; This structure has been dwindled the welding machine volume greatly, helps heat radiation again, helps the modularization production of each parts.The cowling panel structure is owing to adopt the output of integral type; Prolonged the distance between output connection holes and the wiring board body, thereby helped the heat radiation of output, the heating of connection place that reduces output is to the influence of wiring board; Reduce the fault of cowling panel; Through test, adopt the cowling panel of this structure, the failure rate that causes because of this output interface heating is zero.
Below in conjunction with accompanying drawing and specific embodiment the utility model is further described.
Description of drawings
Fig. 1 is the frame structure sketch map of the power circuit specific embodiment of the two voltages of the utility model;
Fig. 2 is the circuit theory diagrams of the power circuit specific embodiment of the two voltages of the utility model;
Fig. 3 is a kind of inverter type welder specific embodiment block diagram that is provided with the double-voltage electric power circuit of the utility model;
Fig. 4 is a kind of squirrel-cage rectifier structure stereogram that is provided with the inverter type welder specific embodiment of double-voltage electric power circuit of the utility model;
The floor map of the cowling panel of the squirrel-cage rectifier structure of the inverter type welder specific embodiment that Fig. 5 is provided with the double-voltage electric power circuit for the utility model is a kind of.
Description of reference numerals
The T inverter type welder
R power circuit S squirrel-cage rectifier structure
1 cowling panel, 10 connection holes
11 out splice going splices, 12 out splice going splices
13 pre-manufactured holes
2 inversion assemblies, 21 inversion plates
22 drive plates, 23 PWM plates
3 radiators
31 fin, 32 cavitys
4 fans
51 power inputs, 52 power output ends
61 rectification circuits, 62 voltage-multiplying circuits
621,622 capacitance resistance circuit, 623 series connection points
63 soft starting circuits, 71 control transformers
The former limit of winding 712 380V, the former limit of 711220V winding
72 power control circuits, 721 first relays
722 second relays, 73 voltage detecting circuits
731 test sides, 732 outputs
74 voltage stabilizing circuits
Embodiment
In order more to make much of the technology contents of the utility model, below in conjunction with specific embodiment and Figure of description the technical scheme of the utility model is further introduced and explanation, but be not limited to this.
As depicted in figs. 1 and 2; The power circuit of the two voltages of the utility model; Comprise power input 51 and power output end 52; Be in series with rectification circuit 61 and voltage-multiplying circuit 62 between power input 51 and the power output end 52, also comprise the control transformer 71 that connects with power input 51, and the power control circuit 72, the voltage detecting circuit 73 that connect with control transformer 71; Power control circuit 72 comprises first relay of being located between power input 51 and the control transformer 71 721, and is located at second relay 722 between power input 51 and rectification circuit 61, the voltage-multiplying circuit 62; Control transformer 71 is provided with the former limit of 220V winding 711 and the former limit of 380V winding 712, and voltage-multiplying circuit 62 comprises the capacitance resistance circuit 621,622 of two groups of series connection.
The normally-closed contact of first relay 721 (K1-1 as shown in Figure 2) wherein connects with power input 51, the former limit of 380V winding 712, and the normally opened contact of first relay 721 connects with power input 51, the former limit of 220V winding 711; The normally-closed contact of second relay 722 (being made up of a plurality of relays in the present embodiment) connects with the input of power input 51, rectification circuit 61, and the series connection point 623 of the normally opened contact of second relay 722 and power input 51, two groups of capacitance resistance circuit 621,622 connects.Voltage detecting circuit 73 comprises the test side 731 that connects with the secondary of control transformer 71, and the output 732 that connects with power control circuit 72; Be provided with voltage stabilizing circuit 74 between power control circuit 72 and the control transformer 71.Capacitance resistance circuit 621,622 comprises electric capacity, the resistance of a plurality of parallel connections, like the R101～R108 among Fig. 2 and C101～C108.
Also be provided with soft starting circuit 63 between the power input 51 and second relay 722, power control circuit 72 also comprises the 3rd relay 723.Soft starting circuit 63 is by three thermistors (NTC1 as shown in Figure 2～NTC3) constitute the normally opened contact of the 3rd relay 723 (K4 as shown in Figure 2) and thermistor (NTC1 as shown in Figure 2～NTC3) parallelly connected.
Voltage stabilizing circuit 74 wherein comprises the LM7812 chip, and voltage detecting circuit 73 is triode voltage sample circuit (like the Q1 of Fig. 2), and power control circuit 72 also comprises LM358 chip and transistor drive circuit (Q2 as shown in Figure 2, Q3).The bridge rectifier (for control circuit provide DC power supply) of D1-1 among Fig. 2 for connecting with the control transformer secondary.The rectification circuit 61 of main circuit is in circuit not shown (but show its connection port CN2, CN3, CN7).The course of work of whole power circuit is: AC power is imported from CN7; From CN1 output DC source; With Q1, LM358P is that master's control circuit is used to detect the control transformer secondary voltage; Thereby judge that alternating current is 380 or 220, the output of LM358P is used to control a group relay K1-1, K1-2, K2, K3, K4; Be used to switch the rectification circuit passage of main circuit, when the 380V voltage of CN7 input, relay K 1-1, K1-2, K2, K3 all are failure to actuate; The rectification circuit of main circuit is common bridge rectifier; When the 220V voltage of CN7 input, relay all moves, and the rectification circuit of main circuit switches to common bridge rectifier+voltage-multiplying circuit; Thereby realize same direct voltage output, the VD of present embodiment is 600V.Wherein thermistor NTC1 to NTC3 is a soft starting circuit, can reduce the electric current of main circuit and surge, and at each number when inserting power supply in several seconds time, soft starting circuit work reaches relay K4 work behind the setting-up time, and soft starting circuit is not worked.Also be connected with the radiator fan of power circuit part in the circuit diagram.
Extremely shown in Figure 5 like Fig. 3, a kind of inverter type welder that is provided with the double-voltage electric power circuit of the utility model, it comprises the power circuit R of two voltages; Also be provided with squirrel-cage rectifier structure S; Squirrel-cage rectifier structure S comprises the cowling panel 1 of being located at the bottom, is located at the inversion assembly 2 on top and is located at the radiator 3 of two sides, and radiator 3 is provided with the flute profile aluminium that fin 31, centre are provided with cavity 32 for both sides, and cavity 32 down; Be equipped with the said cowling panel 1 in front in the cavity 32; In the present embodiment, the electronic device on the cowling panel 1 places in the cavity 32, and the body part of cowling panel 1 is with the bottom screw attachment of radiator 3.Inversion assembly 2 wherein comprises inversion plate 21, drive plate 22 and PWM plate 23.In addition, the end of cavity 32 is provided with a fan 4.
In sum; The utility model has been owing to adopted voltage detecting circuit, and the voltage of power input is detected, when detecting input voltage and being 380V; The former limit winding of control transformer is selected the 380V union end of acquiescence, and rectification circuit directly connects with power output end; When detecting input voltage and be 220V; The former limit winding of control transformer switches to the 220V union end; And between rectification circuit and power output end, insert voltage-multiplying circuit, form rectification multiple pressuring circuit, thereby guaranteed when the input power supply is 220V; The voltage of control circuit and the output end voltage of main circuit are with input power supply the same when being 380V; Realize the automatic switchover of the two voltages of 380V/220V.The utility model inverter type welder had both adopted the power circuit of two voltages; Also adopt mouse cage type structure; Wherein inversion assembly, cowling panel and radiator are combined; And the out splice going splice of cowling panel has also adopted the certain distance that stretches out, and (protruding 3.5～5cm) monolithic construction makes the utility model inverter type welder to use in the place with 380V or 220V power supply, and is very convenient; Both had better heat radiating effect, and made the line between each parts the shortest again; This structure has been dwindled the welding machine volume greatly, helps heat radiation again, helps the modularization production of each parts.The cowling panel structure is owing to adopt the output of integral type; Prolonged the distance between output connection holes and the wiring board body, thereby helped the heat radiation of output, the heating of connection place that reduces output is to the influence of wiring board; Reduce the fault of cowling panel; Through test, adopt the cowling panel of this structure, the failure rate that causes because of this output interface heating is zero.
The above only further specifies the technology contents of the utility model with embodiment; So that the reader is more readily understood; But do not represent the execution mode of the utility model to only limit to this, any technology of doing according to the utility model is extended or recreation, all receives the protection of the utility model.The protection range of the utility model is as the criterion with claims.
Claims (10)
1. the power circuit of two voltages; Comprise power input and power output end; It is characterized in that being in series with between power input and the power output end rectification circuit and voltage-multiplying circuit; Also comprise the control transformer that connects with power input, and the power control circuit, the voltage detecting circuit that connect with control transformer; Described power control circuit comprises first relay of being located between power input and the control transformer, and is located at second relay between power input and rectification circuit, the voltage-multiplying circuit; Described control transformer is provided with 220V former limit winding and the former limit of 380V winding, and described voltage-multiplying circuit comprises the capacitance resistance circuit of two groups of series connection.
2. the power circuit of pair voltage according to claim 1 is characterized in that the normally-closed contact of said first relay connects with power input, the former limit of 380V winding, and the normally opened contact of first relay connects with power input, the former limit of 220V winding; The normally-closed contact of said second relay connects with the input of power input, rectification circuit, and the normally opened contact of second relay connects with the series connection point of power input, two groups of capacitance resistance circuit.
3. the power circuit of pair voltage according to claim 2 is characterized in that said voltage detecting circuit comprises the test side that connects with the secondary of control transformer, and the output that connects with power control circuit; Be provided with voltage stabilizing circuit between said power control circuit and the control transformer.
4. the power circuit of pair voltage according to claim 3 is characterized in that described capacitance resistance circuit comprises the electric capacity of a plurality of parallel connections, resistance.
5. the power circuit of pair voltage according to claim 4 is characterized in that also being provided with soft starting circuit between the described power input and second relay, and described power control circuit also comprises the 3rd relay.
6. the power circuit of pair voltage according to claim 5 is characterized in that described soft starting circuit comprises thermistor, and the normally opened contact of said the 3rd relay is parallelly connected with thermistor.
7. the power circuit of pair voltage according to claim 6; It is characterized in that described voltage stabilizing circuit comprises the LM7812 chip; Described voltage detecting circuit is the triode voltage sample circuit, and described power control circuit also comprises LM358 chip and transistor drive circuit.
8. inverter type welder that is provided with the double-voltage electric power circuit is characterized in that comprising the power circuit of each described pair of voltage of claim 1 to 7.
9. the inverter type welder that is provided with the double-voltage electric power circuit according to claim 8; It is characterized in that also being provided with the squirrel-cage rectifier structure; Described squirrel-cage rectifier structure comprises the cowling panel of being located at the bottom, is located at the inversion assembly on top and is located at the radiator of two sides; Described radiator is that both sides are provided with the aluminium section bar that fin, centre are provided with cavity, and described cavity is equipped with aforesaid cowling panel down in the cavity.
10. the inverter type welder that is provided with the double-voltage electric power circuit according to claim 9; It is characterized in that described cowling panel is provided with the out splice going splice more than two; Described out splice going splice is that welded type integral body connects with the cowling panel body, and described out splice going splice extends outward 3.5～5cm from the cowling panel body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201703631U CN202103595U (en) | 2011-05-25 | 2011-05-25 | Double voltage power circuit and inverter welder comprising same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201703631U CN202103595U (en) | 2011-05-25 | 2011-05-25 | Double voltage power circuit and inverter welder comprising same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202103595U true CN202103595U (en) | 2012-01-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201703631U Expired - Fee Related CN202103595U (en) | 2011-05-25 | 2011-05-25 | Double voltage power circuit and inverter welder comprising same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202103595U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102801205A (en) * | 2011-05-25 | 2012-11-28 | 深圳市富驰机电设备有限公司 | Dual-voltage power supply circuit and inverter welding machine comprising same |
| CN107256058A (en) * | 2017-08-04 | 2017-10-17 | 温岭阿凡达机电有限公司 | A kind of transformer switching circuit and switching method |
| CN111014889A (en) * | 2019-12-25 | 2020-04-17 | 浙江颐顿机电有限公司 | Single-phase full-network-communication inverter welding machine circuit |
-
2011
- 2011-05-25 CN CN2011201703631U patent/CN202103595U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102801205A (en) * | 2011-05-25 | 2012-11-28 | 深圳市富驰机电设备有限公司 | Dual-voltage power supply circuit and inverter welding machine comprising same |
| CN102801205B (en) * | 2011-05-25 | 2015-05-27 | 深圳市中智投资有限公司 | Dual-voltage power supply circuit and inverter welding machine comprising same |
| CN107256058A (en) * | 2017-08-04 | 2017-10-17 | 温岭阿凡达机电有限公司 | A kind of transformer switching circuit and switching method |
| CN111014889A (en) * | 2019-12-25 | 2020-04-17 | 浙江颐顿机电有限公司 | Single-phase full-network-communication inverter welding machine circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120104 Termination date: 20150525 |
|
| EXPY | Termination of patent right or utility model |