CN107732874A - Energy saving motor rectification overheats delay protection device - Google Patents
Energy saving motor rectification overheats delay protection device Download PDFInfo
- Publication number
- CN107732874A CN107732874A CN201711151422.9A CN201711151422A CN107732874A CN 107732874 A CN107732874 A CN 107732874A CN 201711151422 A CN201711151422 A CN 201711151422A CN 107732874 A CN107732874 A CN 107732874A
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- CN
- China
- Prior art keywords
- motor
- coil
- bridge rectifier
- normally opened
- opened contact
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/08—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
- H02H7/085—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors against excessive load
- H02H7/0852—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors against excessive load directly responsive to abnormal temperature by using a temperature sensor
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/02—Details
- H02H3/027—Details with automatic disconnection after a predetermined time
Landscapes
- Protection Of Generators And Motors (AREA)
Abstract
Energy saving motor rectification of the present invention overheats delay protection device, belongs to energy saving motor rectification overheat delay protection device technical field.Technical problem to be solved is：A kind of device for being applied to motor overheat delay protection is provided, and the energy saving motor rectification that stable power-supplying can be carried out to motor overheats delay protection device；Solve technical scheme that the technical problem uses for：Main contacts CJ1 3 other end is connected with bridge rectifier T1 ac input end, it is connected after the ac output end concatenation fuse RD2 of the bridge rectifier T1 with control circuit zero-power line end N, the direct-flow input end of the bridge rectifier T1 is simultaneously connected after connecing motor M1 input with electric capacity C1 one end, the DC output end of the bridge rectifier T1 is simultaneously connected after connecing motor M1 output end with the electric capacity C1 other end, and coil RJ1 1 is additionally provided between the direct-flow input end of the bridge rectifier T1 and motor M1 input；Present invention installation is applied in motor control protection device.
Description
Technical field
Energy saving motor rectification of the present invention overheats delay protection device, belongs to energy saving motor rectification overheat delay protection dress
Put technical field.
Background technology
The overload protection mode currently used to motor, it is that thermal protector is connected in motor end of incoming cables, after excessively stream occurs,
Thermal protector acts, and cuts off motor main circuit, reaches the purpose of protection motor, and the benefit of this protected mode is reliable in action,
Sensitivity is higher, but shortcoming is also a lot, because the source current that control circuit provides is unstable, often results in and protects by mistake, especially
Be equipment at full capacity long-play when, protector is easily malfunctioned, and causes operation troubles, and motor may be damaged when serious.
The content of the invention
The present invention overcomes the shortcomings of the prior art, and technical problem to be solved is：A kind of be applied to electricity is provided
Machine overheat the device of delay protection, and the energy saving motor rectification overheat delay protection dress of stable power-supplying can be carried out to motor
Put；In order to solve the above technical problems, the technical solution adopted in the present invention is：Energy saving motor rectification overheat delay protection dress
Put, including fuse RD1, RD2, stop button AT1, start button AQ1, A.C. contactor CJ1, time relay sj 1, centre
Relay ZJ1, thermal protector RJ1, motor M1, bridge rectifier T1, electric capacity C1, indicator lamp HD1, HD2, wherein：
A.C. contactor CJ1 coil is CJ1-1, normally opened contact CJ1-2, main contacts CJ1-3；
The coil of time relay sj 1 is SJ1-1, delay normally opened contact SJ1-2；
The coil of intermediate relay ZJ 1 is ZJ1-1, normally-closed contact ZJ1-2；
Thermal protector RJ1 coil is RJ1-1；Normally opened contact is RJ1-2；
The structure of control circuit is：
Fuse RD1 one end is connected with control circuit power firestreak end L, the other end of the fuse RD1 and connect stopping by
One end behind button AT1 one end with main contacts CJ1-3 is connected；
The other end of the main contacts CJ1-3 is connected with bridge rectifier T1 ac input end, the bridge rectifier T1's
It is connected after ac output end concatenation fuse RD2 with control circuit zero-power line end N, the direct current input of the bridge rectifier T1
Hold and be connected after connecing motor M1 input with electric capacity C1 one end, the DC output end of the bridge rectifier T1 simultaneously connects motor
The other end after M1 output end with electric capacity C1 is connected, the direct-flow input end of the bridge rectifier T1 and motor M1 input
Between be additionally provided with coil RJ1-1；
The other end of the stop button AT1 is sequentially connected in series start button AQ1, A.C. contactor CJ1 coil CJ1-1, centre
It is connected after relay ZJ1 normally-closed contact ZJ1-2 with fuse RD2 end of incoming cables；
The normally opened contact CJ1-2 of the A.C. contactor CJ1 is attempted by start button AQ1 both ends, the A.C. contactor CJ1
Coil CJ1-1 both ends and be connected to indicator lamp HD1；
The normally opened contact RJ1-2 of thermal protector RJ1 end of incoming cables is connected with start button AQ1 end of incoming cables, thermal protector
It is normally closed with intermediate relay ZJ 1 after the coil SJ1-1 of RJ1 normally opened contact RJ1-2 leading-out terminal concatenation time relay sj 1
Contact ZJ1-2 end of incoming cables is connected, and the coil SJ1-1 of the time relay sj 1 both ends are simultaneously connected to indicator lamp HD2；
The delay normally opened contact SJ1-2 of the time relay sj 1 end of incoming cables is connected with start button AQ1 end of incoming cables, when
Between relay SJ1 delay normally opened contact SJ1-2 leading-out terminal concatenation intermediate relay ZJ 1 coil ZJ1-1 after with centre after
Electrical equipment ZJ1 normally-closed contact ZJ1-2 end of incoming cables is connected.
The present invention has an advantageous effect in that compared with prior art：The present invention is set in thermal protection for motors control circuit
Having time relay and deferred action switch, when thermal protector acts, main circuit will continue to run with a period of time, reach setting
Delay time after, protection device carries out action cut-out main circuit, protects motor, and interior electric current recovers normal during delay, heat
Protector resets, then motor will not be out of service, ensure that the reliability of motor operation, and the malfunction of the protector avoided is whole
Individual circuit structure is simple, and cost is low, PLC or SCM program controller can be replaced to be used.
Brief description of the drawings
The embodiment of the present invention is described in further detail below in conjunction with the accompanying drawings：
Fig. 1 is control circuit structural representation of the present invention.
Embodiment
As shown in figure 1, energy saving motor rectification overheat delay protection device of the present invention, including fuse RD1, RD2, stop
Button AT1, start button AQ1, A.C. contactor CJ1, time relay sj 1, intermediate relay ZJ 1, thermal protector RJ1, electricity
Machine M1, bridge rectifier T1, electric capacity C1, indicator lamp HD1, HD2, wherein：
A.C. contactor CJ1 coil is CJ1-1, normally opened contact CJ1-2, main contacts CJ1-3；
The coil of time relay sj 1 is SJ1-1, delay normally opened contact SJ1-2；
The coil of intermediate relay ZJ 1 is ZJ1-1, normally-closed contact ZJ1-2；
Thermal protector RJ1 coil is RJ1-1；Normally opened contact is RJ1-2；
The structure of control circuit is：
Fuse RD1 one end is connected with control circuit power firestreak end L, the other end of the fuse RD1 and connect stopping by
One end behind button AT1 one end with main contacts CJ1-3 is connected；
The other end of the main contacts CJ1-3 is connected with bridge rectifier T1 ac input end, the bridge rectifier T1's
It is connected after ac output end concatenation fuse RD2 with control circuit zero-power line end N, the direct current input of the bridge rectifier T1
Hold and be connected after connecing motor M1 input with electric capacity C1 one end, the DC output end of the bridge rectifier T1 simultaneously connects motor
The other end after M1 output end with electric capacity C1 is connected, the direct-flow input end of the bridge rectifier T1 and motor M1 input
Between be additionally provided with coil RJ1-1；
The other end of the stop button AT1 is sequentially connected in series start button AQ1, A.C. contactor CJ1 coil CJ1-1, centre
It is connected after relay ZJ1 normally-closed contact ZJ1-2 with fuse RD2 end of incoming cables；
The normally opened contact CJ1-2 of the A.C. contactor CJ1 is attempted by start button AQ1 both ends, the A.C. contactor CJ1
Coil CJ1-1 both ends and be connected to indicator lamp HD1；
The normally opened contact RJ1-2 of thermal protector RJ1 end of incoming cables is connected with start button AQ1 end of incoming cables, thermal protector
It is normally closed with intermediate relay ZJ 1 after the coil SJ1-1 of RJ1 normally opened contact RJ1-2 leading-out terminal concatenation time relay sj 1
Contact ZJ1-2 end of incoming cables is connected, and the coil SJ1-1 of the time relay sj 1 both ends are simultaneously connected to indicator lamp HD2；
The delay normally opened contact SJ1-2 of the time relay sj 1 end of incoming cables is connected with start button AQ1 end of incoming cables, when
Between relay SJ1 delay normally opened contact SJ1-2 leading-out terminal concatenation intermediate relay ZJ 1 coil ZJ1-1 after with centre after
Electrical equipment ZJ1 normally-closed contact ZJ1-2 end of incoming cables is connected.
The present invention in normal use, now press start button AQ1, make A.C. contactor CJ1 coil CJ1-1 obtain it is electric,
Indicator lamp HD1 is bright simultaneously, its normally opened contact CJ1-2 closures, main contacts CJ1-3 closures, starts motor M1 and starts working；When
When needing to close down motor M1, stop button AT1 is pressed, makes A.C. contactor CJ1 coil CJ1-1 dead electricity, indicator lamp HD1 goes out,
Its normally opened contact CJ1-2 disconnects, and main contacts CJ1-3 disconnects, and motor M1 dead electricity is stopped.
When motor M1 electric current is excessive in the process of running cause temperature too high when, thermal protector RJ1 will be acted, control it is normally opened
Contact R J1-2 is closed, and the coil SJ1-1 of time relay sj 1 is obtained electric, now motor M1 may proceed to run, and work as arrival time
The delay time of relay SJ1 settings, time relay sj 1 will control delay normally opened contact SJ1-2 to close, make auxiliary reclay
ZJ1 coil ZJ1-1 obtains electric, and control normally-closed contact ZJ1-2 is disconnected, cuts off main circuit, protection motor M1；
If interior electric current recovers normal during delay, self-resetting is made motor M1 out of service by thermal protector RJ1,
It ensure that motor M1 stable operations, normal start and stop, meanwhile, if in during delay, motor operating current exceedes setting all the time
It is worth, then protection device carries out tripping action, protection motor M1 safety.
Finally it should be noted that：Various embodiments above is merely illustrative of the technical solution of the present invention, rather than its limitations；To the greatest extent
The present invention is described in detail with reference to foregoing embodiments for pipe, it will be understood by those within the art that：Its according to
The technical scheme described in foregoing embodiments can so be modified, either which part or all technical characteristic are entered
Row equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is departed from various embodiments of the present invention technology
The scope of scheme.
Claims (1)
1. energy saving motor rectification overheats delay protection device, it is characterised in that：Including fuse RD1, RD2, stop button
AT1, start button AQ1, A.C. contactor CJ1, time relay sj 1, intermediate relay ZJ 1, thermal protector RJ1, motor M1,
Bridge rectifier T1, electric capacity C1, indicator lamp HD1, HD2, wherein：
A.C. contactor CJ1 coil is CJ1-1, normally opened contact CJ1-2, main contacts CJ1-3；
The coil of time relay sj 1 is SJ1-1, delay normally opened contact SJ1-2；
The coil of intermediate relay ZJ 1 is ZJ1-1, normally-closed contact ZJ1-2；
Thermal protector RJ1 coil is RJ1-1；Normally opened contact is RJ1-2；
The structure of control circuit is：
Fuse RD1 one end is connected with control circuit power firestreak end L, the other end of the fuse RD1 and connect stopping by
One end behind button AT1 one end with main contacts CJ1-3 is connected；
The other end of the main contacts CJ1-3 is connected with bridge rectifier T1 ac input end, the bridge rectifier T1's
It is connected after ac output end concatenation fuse RD2 with control circuit zero-power line end N, the direct current input of the bridge rectifier T1
Hold and be connected after connecing motor M1 input with electric capacity C1 one end, the DC output end of the bridge rectifier T1 simultaneously connects motor
The other end after M1 output end with electric capacity C1 is connected, the direct-flow input end of the bridge rectifier T1 and motor M1 input
Between be additionally provided with coil RJ1-1；
The other end of the stop button AT1 is sequentially connected in series start button AQ1, A.C. contactor CJ1 coil CJ1-1, centre
It is connected after relay ZJ1 normally-closed contact ZJ1-2 with fuse RD2 end of incoming cables；
The normally opened contact CJ1-2 of the A.C. contactor CJ1 is attempted by start button AQ1 both ends, the A.C. contactor CJ1
Coil CJ1-1 both ends and be connected to indicator lamp HD1；
The normally opened contact RJ1-2 of thermal protector RJ1 end of incoming cables is connected with start button AQ1 end of incoming cables, thermal protector
It is normally closed with intermediate relay ZJ 1 after the coil SJ1-1 of RJ1 normally opened contact RJ1-2 leading-out terminal concatenation time relay sj 1
Contact ZJ1-2 end of incoming cables is connected, and the coil SJ1-1 of the time relay sj 1 both ends are simultaneously connected to indicator lamp HD2；
The delay normally opened contact SJ1-2 of the time relay sj 1 end of incoming cables is connected with start button AQ1 end of incoming cables, when
Between relay SJ1 delay normally opened contact SJ1-2 leading-out terminal concatenation intermediate relay ZJ 1 coil ZJ1-1 after with centre after
Electrical equipment ZJ1 normally-closed contact ZJ1-2 end of incoming cables is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711151422.9A CN107732874A (en) | 2017-11-18 | 2017-11-18 | Energy saving motor rectification overheats delay protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711151422.9A CN107732874A (en) | 2017-11-18 | 2017-11-18 | Energy saving motor rectification overheats delay protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107732874A true CN107732874A (en) | 2018-02-23 |
Family
ID=61217349
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711151422.9A Pending CN107732874A (en) | 2017-11-18 | 2017-11-18 | Energy saving motor rectification overheats delay protection device |
Country Status (1)
| Country | Link |
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| CN (1) | CN107732874A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109581957A (en) * | 2018-11-19 | 2019-04-05 | 宁波华星科技有限公司 | A kind of spinning workshop increase opens, off-position delay protection device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202586284U (en) * | 2012-05-31 | 2012-12-05 | 襄垣县树元电器有限公司 | Motor overheating delay protection device |
| CN203434594U (en) * | 2013-06-29 | 2014-02-12 | 襄垣县树元电器有限公司 | Motor overheating delay protection device |
| CN204583063U (en) * | 2015-03-25 | 2015-08-26 | 慈溪市乐泰电器有限公司 | A kind of modified handheld blender |
| CN205921369U (en) * | 2016-08-27 | 2017-02-01 | 国家电网公司 | Overheated automatic protection circuit of motor |
-
2017
- 2017-11-18 CN CN201711151422.9A patent/CN107732874A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202586284U (en) * | 2012-05-31 | 2012-12-05 | 襄垣县树元电器有限公司 | Motor overheating delay protection device |
| CN203434594U (en) * | 2013-06-29 | 2014-02-12 | 襄垣县树元电器有限公司 | Motor overheating delay protection device |
| CN204583063U (en) * | 2015-03-25 | 2015-08-26 | 慈溪市乐泰电器有限公司 | A kind of modified handheld blender |
| CN205921369U (en) * | 2016-08-27 | 2017-02-01 | 国家电网公司 | Overheated automatic protection circuit of motor |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109581957A (en) * | 2018-11-19 | 2019-04-05 | 宁波华星科技有限公司 | A kind of spinning workshop increase opens, off-position delay protection device |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180223 |