CN201444469U - Automatic air switch with temperature protection function - Google Patents
Automatic air switch with temperature protection function Download PDFInfo
- Publication number
- CN201444469U CN201444469U CN2009200297879U CN200920029787U CN201444469U CN 201444469 U CN201444469 U CN 201444469U CN 2009200297879 U CN2009200297879 U CN 2009200297879U CN 200920029787 U CN200920029787 U CN 200920029787U CN 201444469 U CN201444469 U CN 201444469U
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- China
- Prior art keywords
- circuit
- circuit board
- automatic air
- switch
- temperature
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- Expired - Fee Related
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Abstract
An automatic air switch with the temperature protection function comprises a casing, temperature induction switches, a release coil and a circuit board, and is characterized in that the temperature induction switches are arranged at the peripheries of contacts and terminals of the casing; the circuit board is arranged in the casing; a mains input loop of the circuit board is connected in series with the temperature induction switches; and the output end of the circuit board is connected with the release coil. Compared with the prior art, the utility model has the advantages of simple structure and safe and convenient use, can be automatically switched off after giving out an audible and visual alarm when the temperature of the contact of the switch is over the set temperature, eliminates the fire hazards, and ensures the safety utilization of electric power in the production and the life.
Description
Technical field
The utility model relates to the automatic air-break switch technical field, is a kind of automatic air-break switch that has temperature protection concretely.
Background technology
Existing automatic air-break switch mainly is made up of single-phase or heterogeneous switching device, overload protecting mechanism, short current protective mechanism, earth leakage protective mechanism and release.Under the state of energized, if transship, during the abnormal conditions of short circuit or electric leakage, under the effect of release, switching device is disconnected.This class automatic air-break switch for circuit protection has played the certain protection effect, has been avoided the generation of many accidents.But, it also exists weak point to be: can only be to overload, short circuit or the automatic trip of electric leakage abnormal conditions, and can not make a response for position, switching device contact temperaturing lifting abnormality situation, therefore owing to reasons such as the loose contact of switch contact or cable joint are loosening, and cause cable insulation to be burnt, cause fire easily when serious, can not guarantee the safety of electricity consumption.
The utility model content
The purpose of this utility model is exactly the defective that exists at prior art; a kind of automatic air-break switch that has temperature protection is provided; it can not only transship, during the abnormal conditions of short circuit or electric leakage; make the switching device automatic disconnection; can also be when the make and break contact temperature surpasses set point of temperature; promptly send sound and light alarm, can delay time again makes the switching device automatic disconnection, guarantees safety utilization of electric power.
Its technical scheme is: comprise housing, thermal switch, trip coil and circuit board, it is characterized in that being provided with thermal switch on every side at the contact and the terminals of housing, be provided with circuit board in the housing, the power supply input circuit of the circuit board thermal switch that is connected in series, the output of circuit board is connected with trip coil.
Wherein, described thermal switch is for being connected in parallel.Described circuit board is made up of AC-DC step-down conversion circuit, sound light alarming circuit and delay circuit, wherein, the output of AC-DC step-down conversion circuit is divided into two-way, and one the tunnel is connected in sound light alarming circuit, another road is connected in delay circuit, and delay circuit is connected with trip coil.Described thermal switch is installed in the insulating barrier.
The utility model has simple in structure compared with prior art, and is safe and convenient to use, can be when the make and break contact temperature surpass set point of temperature, in time send automatic disconnection behind the sound and light alarm, and stop breaking out of fire, guaranteed the safety utilization of electric power of production, life.
Description of drawings
Fig. 1 is a kind of example structure schematic diagram of the present utility model;
Fig. 2 is a kind of embodiment circuit theory block diagram of the present utility model.
Embodiment:
With reference to Fig. 1-Fig. 2; a kind of automatic air-break switch that has temperature protection; comprise that housing 1, thermal switch 2, trip coil 4 and circuit board 3. are provided with thermal switch 2 on every side at the contact and the terminals of housing 1; be provided with circuit board 3 in the housing 1; the power supply input circuit of circuit board 3 thermal switch 2 that is connected in series, the output of circuit board 3 is connected with trip coil 4.
Wherein, described thermal switch 2 is for being connected in parallel.Described circuit board 3 is made up of AC-DC step-down conversion circuit 31, sound light alarming circuit 32 and delay circuit 33, wherein, the output of AC-DC step-down conversion circuit 31 is divided into two-way, one the tunnel is connected in sound and light alarm 32 circuit, another road is connected in delay circuit 33, and delay circuit 33 is connected with trip coil 4.Described thermal switch 2 is installed in the insulating barrier.
Operation principle of the present utility model, among Fig. 2, A, B end connects ac power input end, under the normal condition, thermal switch 2 all is in off-state, because all thermal switch 2 is for being connected in parallel, so the power input no current of AC-DC step-down conversion circuit 31 is imported and is not worked in the circuit board 3, the work of can normally closing a floodgate of this device.When the bolt position that contact or power circuit owing to automatic air-break switch connect, when causing temperature too high because of certain reason, thermal switch 2 is connected rapidly, the power supply input circuit of AC-DC step-down conversion circuit 31 in the circuit board 3, the output dc voltage of AC-DC step-down conversion circuit 31 drives sound light alarming circuit 32 work, make it send sound and light alarm, the prompting staff in time handles; Simultaneously, delay circuit 33 also the electric time-delay state that enters, after finishing as time-delay, delay circuit 33 internal relay contacting trip coils 4 circuit trigger the automatic air-break switch tripping operation, guarantee safety utilization of electric power.As in reference time delay, when the processing by the staff made temperature be reduced in the allowed band, then thermal switch 2 disconnected rapidly again, makes circuit restoration.
Claims (4)
1. automatic air-break switch that has temperature protection; comprise housing, thermal switch, trip coil and circuit board; it is characterized in that being provided with thermal switch on every side at the contact and the terminals of housing; be provided with circuit board in the housing; the power supply input circuit of the circuit board thermal switch that is connected in series, the output of circuit board is connected with trip coil.
2. the automatic air-break switch that has temperature protection according to claim 1 is characterized in that described thermal switch is for being connected in parallel.
3. the automatic air-break switch that has temperature protection according to claim 1; it is characterized in that described circuit board is made up of AC-DC step-down conversion circuit, sound light alarming circuit and delay circuit; wherein; the output of AC-DC step-down conversion circuit is divided into two-way; one the tunnel is connected in sound light alarming circuit; another road is connected in delay circuit, and delay circuit is connected with trip coil.
4. the automatic air-break switch that has temperature protection according to claim 1 is characterized in that described thermal switch is installed in the insulating barrier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200297879U CN201444469U (en) | 2009-07-15 | 2009-07-15 | Automatic air switch with temperature protection function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200297879U CN201444469U (en) | 2009-07-15 | 2009-07-15 | Automatic air switch with temperature protection function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201444469U true CN201444469U (en) | 2010-04-28 |
Family
ID=42549150
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200297879U Expired - Fee Related CN201444469U (en) | 2009-07-15 | 2009-07-15 | Automatic air switch with temperature protection function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201444469U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107145119A (en) * | 2017-04-20 | 2017-09-08 | 海格科技股份有限公司 | electronic switch with temperature control |
| CN108000642A (en) * | 2017-11-30 | 2018-05-08 | 无锡翔煌电气有限公司 | A kind of desk-top carpenter's perforator |
| CN108155070A (en) * | 2016-12-02 | 2018-06-12 | Ls 产电株式会社 | Molded case circuit breakers |
-
2009
- 2009-07-15 CN CN2009200297879U patent/CN201444469U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108155070A (en) * | 2016-12-02 | 2018-06-12 | Ls 产电株式会社 | Molded case circuit breakers |
| CN108155070B (en) * | 2016-12-02 | 2019-09-06 | Ls 产电株式会社 | Molded case circuit breakers |
| CN107145119A (en) * | 2017-04-20 | 2017-09-08 | 海格科技股份有限公司 | electronic switch with temperature control |
| CN108000642A (en) * | 2017-11-30 | 2018-05-08 | 无锡翔煌电气有限公司 | A kind of desk-top carpenter's perforator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100428 Termination date: 20110715 |