CN1508957A - Anti-overheating device for induction motor - Google Patents
Anti-overheating device for induction motor Download PDFInfo
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- CN1508957A CN1508957A CNA021556717A CN02155671A CN1508957A CN 1508957 A CN1508957 A CN 1508957A CN A021556717 A CNA021556717 A CN A021556717A CN 02155671 A CN02155671 A CN 02155671A CN 1508957 A CN1508957 A CN 1508957A
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- temperature
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- failure
- stator
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Abstract
The invention relates to induction motor comprises stator, rotor, rotation axis and unit of guarding against overheating. The said unit comprises first part for cutting off current and second part for cutting off current. The first part positioned at a side of stator winding is capable of monitoring temperature. Thus, when monitored temperature is higher than first temperature, the first part cuts off current connected to the said stator winding. The second part cascaded to the first part is capable of monitoring temperature. Thus, when monitored temperature is higher than second temperature, the second part cuts off current connected to the said stator winding. The invented structure of guarding against overheating reduces possibility of operating error.
Description
Technical field
The present invention relates to a kind of induction machine of electricity field, the over-temperature protection (OVERHEAT PROTECTION APPARATUS FOR INDUCTION MOTOR) that particularly relates to a kind of induction machine, specifically a kind of possibility that can reduce operating mistake, thus the over-temperature protection that stator was prevented the induction machine of hot property improved.
Background technology
See also shown in Figure 1ly, Fig. 1 is the side cutaway view of existing induction machine.As shown in the figure, induction machine is by forming as the lower part: inner installing space and the hard-wired stator 11 of forming; Be positioned at the inside and the rotatable rotor 21 of stator 11; On the axle center of rotor 21, become one and rotatable rotating shaft 23 with rotor 21; Stator 11 is installed on it and rotates the carriage 25 of supporting rotating shaft 23.
See also Fig. 2, Fig. 3 and shown in Figure 4, Fig. 2 is the vertical view of existing induction machine stator; Fig. 3 is the end view of Fig. 2; Fig. 4 is the schematic circuit diagram of existing induction machine.As Fig. 2, Fig. 3 and shown in Figure 4, inside at stator 11, formation is provided with the rotor installing hole 13 that rotor 21 can be installed and be positioned at middle section, be provided with and form along rotor installing hole 13 peripheral direction, the stator core 12 that is laminated with steel plate insulation with a plurality of slits 14, and the stator coil of forming by main coil 17 that is wound in stator core 12 slits 14 and secondary coil 18 15.
In addition,, be provided with when the temperature of main coil 17 rises, can cut off the thermal protection device 31 of the electric current that is connected main coil 17 in a side of main coil 17; The one side is connected with capacitor 27 in addition.
According to aforesaid structure, the situation if rotor 21 is stuck etc., in the time of can causing the temperature of stator coil 15 to rise, thermal protection device 13 monitor temperatures also surpass setting when above in temperature, cut off the electric current that is connected in stator coil 15.After the temperature of stator coil 15 returns to below the setting, reconnect the electric current of stator coil 15.
But, in above-mentioned existing induction machine, because outside impact, too high voltage or too high electric current, thermal protection device 31 is destroyed and can not work the time, if problems such as rotor 21 is stuck take place, stator coil 15 begins heating, and the excessive temperature rising of stator coil 15 can cause hardly imaginable results such as fire.
This shows that the over-temperature protection of above-mentioned existing induction machine still has many defectives, and demands urgently further being improved.
The problem that exists for the over-temperature protection that solves above-mentioned induction machine, relevant manufacturer there's no one who doesn't or isn't seeks solution painstakingly, but do not see always that for a long time suitable design finished by development, and common product does not have appropriate structure to address the above problem, and this obviously is the problem that the anxious desire of relevant dealer solves.
Because the defective that the over-temperature protection of above-mentioned existing induction machine exists, the inventor is based on being engaged in this type of product design manufacturing abundant for many years practical experience and professional knowledge, actively studied innovation, over-temperature protection in the hope of the induction machine of founding a kind of new structure, can improve the general over-temperature protection structure of the induction machine of existing routine on the market, make it have more practicality.Through constantly research, design, and after studying sample and improvement repeatedly, create the present invention who has practical value finally.
Summary of the invention
Main purpose of the present invention is, overcome the defective of the over-temperature protection existence of existing induction machine, and provide a kind of over-temperature protection of induction machine of new structure, technical problem underlying to be solved is to make its possibility that can reduce operating mistake, thereby improves the reliability that stator coil was prevented hot property.
Purpose of the present invention and to solve its technical problem underlying be to adopt following technical scheme to realize.According to the induction machine over-temperature protection that the present invention proposes, it comprises by inside and forms also hard-wired stator of installing space; Be positioned at the inside and the rotatable rotor of stator; On the axle center of rotor, become one and rotatable rotating shaft with rotor, and the carriage induction machine of forming and the temperature that can monitor the said stator coil that is positioned at a side setting of stator coil that are installed on the stator and rotate supporting rotating shaft, at the overheated over-temperature protection that can cut off the electric current that is connected the said stator coil of said stator coil.Wherein said over-temperature protection be positioned at the said stator coil a side and can monitor temperature, thereby rise to first temperature when above in temperature, can cut off the first failure of current portion of the electric current that is connected the said stator coil; With a side that is positioned at the said stator coil and can monitor temperature, be series at the above-mentioned first failure of current portion simultaneously, thereby rise to above-mentioned second temperature when above in temperature, can cut off the second failure of current portion of the electric current that is connected the said stator coil.
The object of the invention to solve the technical problems can also be further achieved by the following technical measures.
The over-temperature protection of aforesaid induction machine, wherein said first failure of current portion and the above-mentioned second failure of current portion are anti-thermocutout and form.
The over-temperature protection of aforesaid induction machine, the wherein said first failure of current portion is the thermal protection device, the second failure of current portion is anti-thermocutout.
The over-temperature protection of aforesaid induction machine, the wherein said first failure of current portion is the thermal protection device, the second failure of current portion is a fuse formula cutout.
The over-temperature protection of aforesaid induction machine, the cut-out that the wherein said second failure of current portion is provided with is connected second temperature of said stator coil current than the described first temperature height.
The present invention compared with prior art has tangible advantage and beneficial effect.By above technical scheme as can be known, as described above, according to monophase machine over-temperature protection of the present invention, be provided with after the temperature of stator coil rises to uniform temperature, can monitor this temperature and can cut off the first failure of current portion and the second failure of current portion that is connected the stator coil power supply, therefore, even because outside impact, too high voltage and too high electric current, one of them cisco unity malfunction, but another can cut off the power supply that is connected stator coil.Therefore, can prevent the overheated of stator coil even cause the phenomenon of fire.According to structure of the present invention, the over-temperature protection of induction machine of the present invention can reduce the possibility of operating mistake, thereby has improved the hot property of preventing of induction machine.
In sum, the over-temperature protection of the induction machine of special construction of the present invention, have above-mentioned many advantages and practical value, and in like product, do not see have similar structural design to publish or use, no matter and its structurally or bigger improvement is all arranged on the function, have technically than much progress, and produced handy and practical effect, and have the effect of enhancement really, thus be suitable for practicality more, really be a new and innovative, progressive, practical new design.
Above-mentioned explanation only is the general introduction of technical solution of the present invention, for can clearer understanding technological means of the present invention, and can be implemented according to the content of specification, below with preferred embodiment of the present invention and conjunction with figs. describe in detail as after.
The specific embodiment of the present invention is provided in detail by following examples and accompanying drawing thereof.
Description of drawings
Fig. 1 is the side cutaway view of existing induction machine.
Fig. 2 is the vertical view of existing induction machine stator.
Fig. 3 is the end view of Fig. 2.
Fig. 4 is the schematic circuit diagram of existing induction machine.
Fig. 5 is the end view of a kind of induction machine over-temperature protection of the present invention.
Fig. 6 is the vertical view of Fig. 5.
Fig. 7 is the schematic circuit diagram of induction machine among Fig. 5.
Fig. 8 is the amplification view of the anti-cutout of heat among Fig. 5.
Fig. 9 is the cutaway view of the fuse of another kind of induction machine over-temperature protection of the present invention.
11...... stator 12...... stator core
13...... installing hole 14...... slit
15...... stator coil 17...... main coil
18...... secondary coil 19...... static line
20...... the 21...... of electric current supply department rotor
23...... rotating shaft 25...... carriage
27...... capacitor 31...... thermal protection device
41...... anti-thermocutout 42...... conductivity shell
43...... first lead 44 ... second lead
46...... the first spring 47...... disk
48...... the second spring 49...... contact
51...... fuse formula cutout 53...... cylindrical duct
55...... privates 56...... privates
57...... temperature sensor
Embodiment
Below in conjunction with accompanying drawing and preferred embodiment, its embodiment of over-temperature protection, structure, feature and the effect thereof of the induction machine that foundation the present invention is proposed, describe in detail as after.
See also Fig. 5, Fig. 6, Fig. 7, Fig. 8 and shown in Figure 9, Fig. 5 is the end view of a kind of induction machine over-temperature protection of the present invention, Fig. 6 is the vertical view of Fig. 5, Fig. 7 is the schematic circuit diagram of induction machine among Fig. 5, Fig. 8 is the amplification view of the anti-cutout of heat among Fig. 5, and Fig. 9 is the cutaway view of the fuse of another kind of induction machine over-temperature protection of the present invention.When the present invention will be described, for convenience of explanation,, use identical label symbol to above-mentioned explanation or illustrate identical part.The over-temperature protection of induction machine of the present invention, its induction machine mainly comprise inner installing space and the hard-wired stator 11 of forming; Be positioned at the inside and the rotatable rotor 21 of stator 11; On the axle center of rotor 21, become one and rotatable rotating shaft 23, and be incorporated on the stator 11 and rotate the carriage 25 of supporting rotating shaft 23 with rotor 21.
On stator 11, be provided with the rotor installing hole 13 that rotor 21 can be installed and possess the stator core 12 that is laminated with the steel plate insulation of a plurality of slits 14, and the stator coil of forming by main coil 17 that is wound in stator core 12 slits 14 and secondary coil 18 15.
Side at stator coil 15 is provided with, the situation if rotor 21 is stuck etc., when causing stator coil 15 heatings and temperature too being risen, can monitor this variation and cut-out and be connected the electric current of main coil 17, thereby can prevent the first failure of current portion and the second failure of current portion that stator coil 15 is overheated.
The first failure of current portion partly is made up of bimetal leaf etc., this first failure of current portion is when the temperature of stator coil 15 rises to more than first temperature, can cut off the electric current of stator coil 15, after the temperature of stator coil 15 returns to below first temperature again, reconnect the thermal protection device 31 of stator coil 15 electric currents.
The second failure of current portion is positioned at a side of thermal protection device 31 and is series at thermal protection device 31, and this second failure of current portion is on second temperature higher a little than first temperature, can cut off the anti-thermocutout 41 of the fuse of stator coil 15 electric currents.
See also the anti-cutout 41 of heat shown in Figure 8, above-mentioned, it comprises: conductivity shell 42; Be connected in a side of conductivity shell 42 and first lead 43 of energy conducting; Second lead 44 that connects in the insulation of the other end of shell 42; Be positioned at the inside of shell 42 and the disk 47 that constitutes by thermoplastic resin; Conducting is connected in the inside of shell and is conducting to the contact 49 of first lead 43; Move to second lead 44 for contact 49 and apply first spring 46 of elastic force, and move to second lead 43 for contact 49 and apply second spring 48 of elastic force.
When the temperature of stator coil 15 rises to more than second temperature, after disk 47 fusions that constitute by thermoplastic resin, be subjected to disk 47 extruding originally and first spring 46 and second spring that are in the compression status of support begins to uphold.According to these motions, contact 49 disconnects from first lead 43, thereby makes first lead 43 and second lead 44 be in off-state.
As shown in Figure 9, the second failure of current portion can also form following structure, and it comprises: the cylindrical duct of being made by non-conductive plastic material 53; Length direction along cylindrical duct 53 is inserted into terminal certain-length and the privates 55 and the privates 56 of the certain distance that staggers mutually, and conducting connects privates 55 and privates 56 also can fuse on second temperature, thereby can make privates 55 and privates mutually insulated, possess the fuse formula cutout 51 of the temperature sensor 57 that constitutes by low-melting alloy.
Aforesaid structure, when thermal protection device 31 was in normal condition, if because of reasons such as rotor 21 are stuck, the temperature of stator coil 15 rose to more than first temperature, thermal protection device 31 cuts off and is connected to the electric current of stator coil, thereby reaches the purpose that prevents that stator coil 15 is overheated; After below temperature returns to first temperature, reconnect the electric current of stator coil.
In addition, because the reason of outside impact, too high electric current and too high power supply, the thermal protection device is destroyed and can not onset, but because problems such as rotor 21 is stuck take place, when the temperature of stator coil 15 rises to more than first temperature, because stator coil 15 can continue conduction, the temperature rising De Genggao of stator coil 15.At this moment, if the temperature of stator coil 15 reaches second temperature, disk 47 fusions of anti-cutout 41 inside of heat, thereby contact 49 is disconnected from first lead 43, therefore, can cut off the electric current that is connected to stator coil 15, just can prevent that also the temperature of stator coil 15 from continuing to rise.
In above-mentioned explanation and illustrated embodiment, the thermal protection device is made by the first failure of current portion, and anti-thermocutout or fuse formula cutout are made by the second failure of current portion, but also can all make anti-thermocutout to the first failure of current portion and the second failure of current portion.
The technological innovation of the over-temperature protection of the induction machine of the present invention that above-mentioned structure like this constitutes all has many saving graces for technical staff of the same trade now, progressive really possesses skills.
The above, it only is preferred embodiment of the present invention, be not that the present invention is done any pro forma restriction, any those skilled in the art may utilize the technology contents of above-mentioned announcement to be changed or be modified to the equivalent embodiment of equivalent variations, but every technical solution of the present invention content that do not break away from,, all still belong in the scope of technical solution of the present invention any simple modification, equivalent variations and modification that above embodiment did according to technical spirit of the present invention.
Claims (5)
1, a kind of over-temperature protection of induction machine, it comprises by inside and forms installing space and hard-wired stator (11); Be positioned at the inside and the rotatable rotor (21) of stator (11); On the axle center of rotor (21), become one and rotatable rotating shaft (23) with rotor (21), and be installed on the stator (11) and induction machine that the carriage (25) of rotation supporting rotating shaft (23) is formed and the temperature that can monitor said stator coil (15) that is positioned at a side setting of stator coil (15), be connected said stator coil (15) overheated can the cut-out of said stator coil (15)) the over-temperature protection of electric current, it is characterized in that described over-temperature protection comprises:
Be positioned at the said stator coil a side and can monitor temperature, rise to first temperature in temperature and can cut off the first failure of current portion of the electric current that is connected the said stator coil when above; And
Be positioned at the said stator coil a side and can monitor temperature, simultaneously be series at the above-mentioned first failure of current portion, rise to above-mentioned second temperature in temperature and can cut off the second failure of current portion of the electric current that is connected the said stator coil when above.
2, the over-temperature protection of induction machine according to claim 1 is characterized in that wherein said first failure of current portion and the described second failure of current portion form by anti-thermocutout (41).
3, the over-temperature protection of induction machine according to claim 1 is characterized in that the wherein said first failure of current portion is thermal protection device (31), and the described second failure of current portion is anti-thermocutout (41).
4, the over-temperature protection of induction machine according to claim 3 is characterized in that the wherein said second failure of current portion is a fuse formula cutout (51).
5,, it is characterized in that the cut-out that the wherein said second failure of current portion is provided with is connected second temperature of said stator coil current than the described first temperature height according to the over-temperature protection of claim 3 or 4 described induction machines.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021556717A CN100353649C (en) | 2002-12-13 | 2002-12-13 | Anti-overheating device for induction motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021556717A CN100353649C (en) | 2002-12-13 | 2002-12-13 | Anti-overheating device for induction motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1508957A true CN1508957A (en) | 2004-06-30 |
| CN100353649C CN100353649C (en) | 2007-12-05 |
Family
ID=34236017
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021556717A Expired - Fee Related CN100353649C (en) | 2002-12-13 | 2002-12-13 | Anti-overheating device for induction motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100353649C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102368652A (en) * | 2011-10-25 | 2012-03-07 | 吴江市海成纺织有限公司 | Motor device |
| CN110313119A (en) * | 2017-02-20 | 2019-10-08 | 松下知识产权经营株式会社 | The manufacturing method of motor and motor |
| CN111049323A (en) * | 2020-01-19 | 2020-04-21 | 广州扬坪机电科技有限公司 | Motor with emergency protection device and convenient to move |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1032088A (en) * | 1987-09-18 | 1989-03-29 | 东部电气株式会社 | Protector |
| CN1040292A (en) * | 1988-08-13 | 1990-03-07 | 魏祥华 | Protection technique for motor heating |
| CN2423676Y (en) * | 2000-06-02 | 2001-03-14 | 王方军 | Electric motor with superheating protector |
-
2002
- 2002-12-13 CN CNB021556717A patent/CN100353649C/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102368652A (en) * | 2011-10-25 | 2012-03-07 | 吴江市海成纺织有限公司 | Motor device |
| CN110313119A (en) * | 2017-02-20 | 2019-10-08 | 松下知识产权经营株式会社 | The manufacturing method of motor and motor |
| CN111049323A (en) * | 2020-01-19 | 2020-04-21 | 广州扬坪机电科技有限公司 | Motor with emergency protection device and convenient to move |
| CN111049323B (en) * | 2020-01-19 | 2020-11-03 | 东阳市中兴电机有限公司 | Motor with emergency protection function and convenient to move |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100353649C (en) | 2007-12-05 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20071205 Termination date: 20100113 |