CN207038347U - A kind of protected against explosion fan capacitor - Google Patents
A kind of protected against explosion fan capacitor Download PDFInfo
- Publication number
- CN207038347U CN207038347U CN201721032007.7U CN201721032007U CN207038347U CN 207038347 U CN207038347 U CN 207038347U CN 201721032007 U CN201721032007 U CN 201721032007U CN 207038347 U CN207038347 U CN 207038347U
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- shell
- straight tube
- taper pipe
- capacitor body
- locellus
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Abstract
It the utility model is related to a kind of protected against explosion fan capacitor, including barrel-shaped shell, capacitor body, cover plate, the first leading-out terminal, the second leading-out terminal, the lateral wall of shell is arranged with multiple circular fins, shell is internally provided with Taper Pipe, round straight tube is provided between Taper Pipe and the shell bottom of shell, madial wall, the madial wall of circle straight tube and the inwall of shell of Taper Pipe are surrounded by the first plenum chamber, and lateral wall, the lateral wall of circle straight tube and the inwall of shell of Taper Pipe are surrounded by the second plenum chamber；The side wall of circle straight tube is provided with multiple first stomatas, circle straight tube is internally provided with piston, spring, first plenum chamber is divided into the first cavity locellus, the second cavity locellus by piston, and multiple second stomatas are additionally provided with the shell bottom of shell, sponge block is also filled with the second plenum chamber.The protected against explosion fan capacitor can effectively avoid shell that bulge or blast occurs, and explosion-proof effect is good, service life length, good heat dissipation effect, and application value is high.
Description
Technical field
A kind of protected against explosion fan capacitor is the utility model is related to, belongs to capacitor technology field.
Background technology
Fan capacitor is to form rotating excitation field using the characteristic of 90 degree of capacitance current energy leading voltage so that fan/motor
Middle rotor rotates, that is, plays a part of starting motor rotation.Fan capacitor common metal thin-film capacitor at present
Device, general structure are to include barrel-shaped aluminum hull, capacitor body, cover plate, two leading-out terminals, two leading-out terminals and capacitor
Electrically connected between the electrode surface of fuse by wire.The enclosure of fan capacitor is generally not filled with insulating heat-conductive oil or epoxy
Resin adhesive, typically capacitor body is fixed inside the housing using fixed cover, the structure of fixed cover is varied, such as Shen
Please be number for " the environment-friendly type plastic housing capacitor positioning sleeve " disclosed in 201520777812.7, fixed cover is for fixed capacity
Device fuse and ensure that it does not shift inside aluminum hull.
Fan capacitor in the process of running, is influenceed by environment temperature and behaviour in service etc., and fan capacitor is in overvoltage, mistake
It can all cause capacitor body that local self-healing occurs when stream or excess temperature and produce gas, heat caused by self-healing moment makes gas swollen
It is swollen, capacitor bulge, or even blast can be caused.Existing capacitor is typically additionally arranged at the bottom anti-to meet requirement of explosion proof in cover plate
Quick-fried piece, the structure of explosion-proof block is general as disclosed in the utility model patent of Application No. 201420490183.5, prevents
Quick-fried piece of other circuit components that can be avoided outside cover plate break down or damaged, and reduce loss.But explosion-proof block is main
Effect is one " boss " in fact, although protecting cover plate, ensure that the intact of other circuit components at cover plate；But
It is when the pressure of capacitor internal reaches the limit of shell, the side wall of shell or shell bottom are produced easily by explosion in the moment of explosion
Raw metal fragment is easy to make the electronic component of surrounding to be influenceed or short circuit or damage by exploding, and causes whole circuit paralysis.
Therefore, capacitor can also be by setting insurance copper sheet come explosion-proof, when mainly local self-healing occurs using capacitor body in it, production
Raw substantial amounts of gas, cause the shell of capacitor or cover plate expand, bulge deformation, under the action of mechanical stress, protect
Dangerous copper sheet is torn so that capacitor body open circuit, blast is avoided, as disclosed in Application No. 201020668524.5
" a kind of anti-explosion mechanism of Metallized power capacitor ".But the shortcomings that setting insurance copper sheet is, because shell or cover plate are sent out
Shaped position, the shape of changing exist uncertain so that insurance copper sheet has the risk that can not be torn in time；Meanwhile insure copper
The capacitor is scrapped after piece is torn, can not task again；And after local self-healing occurs for capacitor body, although its capacitance
It is declined slightly, but can still function as the start-up capacitance of fan.
Utility model content
The utility model is in view of the deficienciess of the prior art, provide a kind of protected against explosion fan capacitor, particular technique
Scheme is as follows：
A kind of protected against explosion fan capacitor, including barrel-shaped shell, capacitor body, cover plate, the first leading-out terminal, second
Leading-out terminal, the lower end closed of the shell and the open upper end of shell, the cover plate is fixedly connected with the upper end of shell, described
The lower surface of cover plate is installed with explosion-proof block；The upper and lower ends of the capacitor body are respectively arranged with fixed cover, and fixed cover is arranged
It is fixedly connected in the end of capacitor body and fixed cover with the end of capacitor body, the inwall of fixed cover and shell, which is fixed, to be connected
Connect；Be provided with the first wire between first leading-out terminal and capacitor body lower end electrode face, one end of the first wire with
First leading-out terminal electrically connects, and the other end of the first wire electrically connects with capacitor body lower end electrode face；Described second draws
The second wire is provided between terminal and capacitor body upper end electrode face, one end of the second wire is electrically connected with the second leading-out terminal
Connect, the other end of the second wire electrically connects with capacitor body upper end electrode face；The lateral wall of the shell is arranged with multiple circles
Ring-type fin, the inner ring of fin are fixedly connected with the lateral wall of shell；The shell is internally provided with Taper Pipe, on the Taper Pipe
End opening area is more than Taper Pipe lower ending opening area, and the upper end of the Taper Pipe is fixedly connected with the madial wall of shell, the Taper Pipe
Be provided with round straight tube between the shell bottom of shell, the upper end of circle straight tube be fixedly connected with the lower end of Taper Pipe and the inner chamber of circle straight tube with
The inner chamber connection of Taper Pipe, the lower end of circle straight tube are fixedly connected with the shell bottom of shell, the madial wall of the Taper Pipe, the inner side of circle straight tube
The inwall of wall and shell is surrounded by the first plenum chamber, and lateral wall, the lateral wall of circle straight tube and the inwall of shell of the Taper Pipe enclose
Into there is the second plenum chamber；The side wall of the round straight tube is provided with multiple first stomatas, the round straight tube be internally provided with piston,
Spring, first plenum chamber are divided into the first cavity locellus, the second cavity locellus by piston, and the first cavity locellus is arranged on
The top of two cavity locellus, the capacitor body, fixed cover, the first wire and the second wire are respectively positioned on the first cavity locellus
In, the spring is located in the second cavity locellus, and the upper end of the spring is fixedly connected with the piston, the lower end of the spring with it is outer
The shell bottom of shell is fixedly connected；Multiple second stomatas are additionally provided with the shell bottom of the shell, the second stomata and the second plenum chamber connect
It is logical, it is also filled with sponge block in second plenum chamber.
As the improvement of above-mentioned technical proposal, the center of the capacitor body is provided with cylindric plug, in plug
Centre is provided with the through hole of regular hexagon, and the central shaft of through hole is conllinear with the central shaft of plug.
As the improvement of above-mentioned technical proposal, the through hole is internally provided with fuse, fuse and the first wired in series
Connection.
Protected against explosion fan capacitor described in the utility model can effectively avoid shell that bulge or blast, explosion-proof effect occurs
It is good, service life length, good heat dissipation effect, application value height.
Brief description of the drawings
Fig. 1 is protected against explosion fan capacitor structural representation described in the utility model；
Fig. 2 is shell described in the utility model, Taper Pipe, circle straight tube connection diagram；
Fig. 3 is capacitor body structural representation described in the utility model.
Embodiment
In order that the purpose of this utility model, technical scheme and advantage are more clearly understood, below in conjunction with accompanying drawing and implementation
Example, the utility model is further elaborated.It should be appreciated that specific embodiment described herein is only explaining
The utility model, it is not used to limit the utility model.
As shown in Fig. 1 ~ 3, the protected against explosion fan capacitor, including barrel-shaped shell 1, capacitor body 2, cover plate 3,
One leading-out terminal 41, the second leading-out terminal 42, the lower end closed of the shell 1 and the open upper end of shell 1, the cover plate 3 with
The upper end of shell 1 is fixedly connected, and the lower surface of the cover plate 3 is installed with explosion-proof block 31；The upper and lower ends of the capacitor body 2
Fixed cover 5 is respectively arranged with, fixed cover 5 is set in the end of capacitor body 2 and the end of fixed cover 5 and capacitor body 2
Between be fixedly connected using glue, be fixedly connected between fixed cover 5 and the inwall of shell 1 using glue；First exit
The first wire 43, one end and the first exit of the first wire 43 are provided between son 41 and the lower end electrode face of capacitor body 2
Son 41 electrically connects, and the other end of the first wire 43 electrically connects with the lower end electrode face of capacitor body 2；Second leading-out terminal 42
The second wire 44, one end of the second wire 44 and the second leading-out terminal 42 are provided between the upper end electrode face of capacitor body 2
Electrical connection, the other end of the second wire 44 electrically connect with the upper end electrode face of capacitor body 2.Shell 1 can use thermal conductivity and machinery
The good aluminum hull of intensity.The center of capacitor body 2 is provided with cylindric plug 21, and the center of plug 21 is provided with regular hexagon
Through hole 211, the central shaft of through hole 211 are conllinear with the central shaft of plug 21.Capacitor body 2 be first by metallized film wound on
Core is made on plug 21, two end faces up and down of core form electrode surface after carrying out metal spraying, and the electrode surface is easy to subsequently weld
Connect.In winding core, the contact pin of positive six prismsby shape can be injected in through hole 211, contact pin, which rotates, drives plug 21 to be wound
The contact pin of operation, regular hexagon through hole 211 and positive six prismsby shape, which coordinates, avoids the core in rotating from skidding.Through hole 211
Central shaft is conllinear with the central shaft of plug 21, ensures metallized film uniform force in winding process.Shell 1, capacitor body
2nd, cover plate 3, explosion-proof block 31, the first leading-out terminal 41, the second leading-out terminal 42, the first wire 43, the second wire 44, fixed cover 5
It is that device is commonly used in existing capacitor.The lateral wall of the shell 1 is arranged with multiple circular fins 11, the inner ring of fin 11
It is welded and fixed with the lateral wall of shell 1；The shell 1 is internally provided with Taper Pipe 6, and the upper end open area of Taper Pipe 6 is more than
The lower ending opening area of Taper Pipe 6, the upper end of the Taper Pipe 6 are fixed with the madial wall welding of shell 1 or using glue, the Taper Pipe 6
Round straight tube 7, the upper end of circle straight tube 7 and the lower end welding of Taper Pipe 6 and the inner chamber of circle straight tube 7 are provided between the shell bottom of shell 1
Connected with the inner chamber of Taper Pipe 6, the lower end of circle straight tube 7 and the shell back welding of shell 1 are connect or fixed using glue, the Taper Pipe 6 it is interior
The inwall of side wall, the madial wall for justifying straight tube 7 and shell 1 is surrounded by the first plenum chamber, the lateral wall of the Taper Pipe 6, justifies straight tube 7
The inwall of lateral wall and shell 1 is surrounded by the second plenum chamber 14；The side wall of the round straight tube 7 is provided with multiple first stomatas 71,
The round straight tube 7 is internally provided with piston 72, spring 73, and first plenum chamber is divided into the first cavity locellus by piston 72
12nd, the second cavity locellus 13, the first cavity locellus 12 are arranged on the top of the second cavity locellus 13, the capacitor body 2, consolidated
Surely cover the 5, first wire 43 and the second wire 44 is respectively positioned in the first cavity locellus 12, the spring 73 is located at the second cavity locellus
In 13, the upper end of the spring 73 is fixedly connected with piston 72, and the lower end of the spring 73 is fixedly connected with the shell bottom of shell 1；
Multiple second stomatas 15 are additionally provided with the shell bottom of the shell 1, the second stomata 15 connects with the second plenum chamber 14, and described second
Sponge block 8 is also filled with plenum chamber 14.
Explosion-proof block 31 can reinforce cover plate 3 so that cover plate 3 is unlikely to deform.Not only energization enough improves dissipating for shell 1 to fin 11
Thermal effect so that be not easy to gather substantial amounts of heat inside shell 1, the probability that thermal explosion occurred is low；And fin 11 is closing
Annular shape, this cause fin 11 also have reinforcement effect, significantly improve the mechanical strength of the side wall of shell 1, effectively prevent
The wall deformation of shell 1.
During the protected against explosion fan capacitor normal operation, piston 72 is located at the top of the first stomata 71, that is to say, that the
Connected between two cavity locellus 13 and the second plenum chamber 14 by the first stomata 71, the first cavity locellus 12 is closed interior for one
Chamber.The overvoltage of capacitor body 2, excessively stream can all cause metallized film therein that partial breakdown or self-healing generation gas occurs,
Heat caused by breakdown or self-healing moment makes gas expansion become high temperature and high pressure gas, that is to say, that inside the first cavity locellus 12
Air pressure increase, while high temperature and high pressure gas by Taper Pipe 6 to concentrate circle straight tube 7 concentrate so that in the first cavity locellus 12
High temperature and high pressure gas act on piston 72, promote piston 72 to move downward, and spring 73 is compressed, and now due to the second cavity point
Connected between room 13 and the second plenum chamber 14 by the first stomata 71 and the second plenum chamber 14 is connected by the second stomata 15 with extraneous
It is logical so that piston 72 can be moved downward promptly；When piston 72 is moved downward until piston 72 is located under the first stomata 71
Side, is now connected between the first cavity locellus 12 and the second plenum chamber 14 by the first stomata 71, and the second cavity locellus 13 becomes
For the inner chamber of a closing, the high temperature and high pressure gas in the first cavity locellus 12 pass sequentially through the first stomata 71, the second plenum chamber
14th, the second stomata 15 is outwardly led off, and avoiding problems the shell bottom of shell 1 to occur bulge or blast；When the first cavity locellus 12
In air pressure when being decreased to safety value, now piston 72 in the presence of spring 73 upwards motion until piston 72 comes back to the
The top of one stomata 71, now the first cavity locellus 12 is changed into the inner chamber of a closing again, and the second cavity locellus 13 and the
Connected between two plenum chambers 14 by the first stomata 71.When partial breakdown or self-healing generation gas occur again for metallized film
When, then repeatedly said process.Therefore, the protected against explosion fan capacitor is avoided that the generation of bulging blast, while also extends it
Service life.
Wherein, because the upper end open area of Taper Pipe 6 is more than the lower ending opening area of Taper Pipe 6, the internal diameter of circle straight tube 7 is equal to
The internal diameter of the lower end of Taper Pipe 6, Taper Pipe 6 coordinate with circle straight tube 7 so that the high temperature and high pressure gas flow direction circle in the first cavity locellus 12 is straight
In pipe 7 and then it is concentrated on piston 72, the pressure for promoting to be subject on piston 72 is more concentrated, and this is advantageous to piston 72 and transported downwards
It is dynamic；That is, even if slight self-healing or breakdown occur for capacitor body 2, caused gas is less, straight with circle in Taper Pipe 6
Under the coordinated of pipe 7, it is also possible that piston 72 moves downwardly to the lower section of the first stomata 71.When high temperature and high pressure gas are from
When one stomata 71 is sprayed onto in the second plenum chamber 14, under the stop of sponge block 8, impulsive force drops rapidly caused by high temperature and high pressure gas
Low, the gas flow rate finally sprayed from the second stomata 15 is small, other electronic components around shell 1 is influenceed little；Together
When, sponge block 8 can also stop that some impurity enter the inside of round straight tube 7.
Further, when the place circuit abnormal of capacitor body 2 causes the electric current on metallized film therein close
Degree persistently increases to the limit, although oxygen blast cyanidation will not occur for shell 1, if the current density now on metallized film is held
Continuous increase, the breakdown of metallized film easily occurrence of large-area, to avoid blast on fire；The through hole 211 is internally provided with guarantor
Dangerous silk 9, fuse 9 are connected in series with the first wire 43.When the current density in capacitor body 2 on metallized film increases to
During the limit, fuse 9 is blown, and open circuit occurs for the first wire 43, and capacitor body 2 is disconnected, and capacitor body 2 stops work
Make, avoid that blast on fire occurs.
Preferred embodiment of the present utility model is the foregoing is only, it is all at this not to limit the utility model
All any modification, equivalent and improvement made within the spirit and principle of utility model etc., should be included in the utility model
Protection domain within.
Claims (3)
1. a kind of protected against explosion fan capacitor, including barrel-shaped shell（1）, capacitor body（2）, cover plate（3）, the first exit
Son（41）, the second leading-out terminal（42）, the shell（1）Lower end closed and shell（1）Open upper end, the cover plate（3）
With shell（1）Upper end be fixedly connected, the cover plate（3）Lower surface be installed with explosion-proof block（31）；The capacitor body（2）
Upper and lower ends be respectively arranged with fixed cover（5）, fixed cover（5）It is set in capacitor body（2）End and fixed cover（5）With
Capacitor body（2）End be fixedly connected, fixed cover（5）With shell（1）Inwall be fixedly connected；First leading-out terminal
（41）With capacitor body（2）The first wire is provided between lower end electrode face（43）, the first wire（43）One end and first
Leading-out terminal（41）Electrical connection, the first wire（43）The other end and capacitor body（2）Lower end electrode face electrically connects；Described
Two leading-out terminals（42）With capacitor body（2）The second wire is provided between upper end electrode face（44）, the second wire（44）'s
One end and the second leading-out terminal（42）Electrical connection, the second wire（44）The other end and capacitor body（2）Upper end electrode face electricity
Connection, it is characterised in that：The shell（1）Lateral wall be arranged with multiple circular fins（11）, fin（11）Inner ring with
Shell（1）Lateral wall be fixedly connected；The shell（1）Be internally provided with Taper Pipe（6）, the Taper Pipe（6）Upper end open face
Product is more than Taper Pipe（6）Lower ending opening area, the Taper Pipe（6）Upper end and shell（1）Madial wall be fixedly connected, the Taper Pipe
（6）With shell（1）Shell bottom between be provided with round straight tube（7）, circle straight tube（7）Upper end and Taper Pipe（6）Lower end be fixedly connected
And circle straight tube（7）Inner chamber and Taper Pipe（6）Inner chamber connection, circle straight tube（7）Lower end and shell（1）Shell bottom be fixedly connected,
The Taper Pipe（6）Madial wall, circle straight tube（7）Madial wall and shell（1）Inwall be surrounded by the first plenum chamber, the Taper Pipe
（6）Lateral wall, circle straight tube（7）Lateral wall and shell（1）Inwall be surrounded by the second plenum chamber（14）；The round straight tube
（7）Side wall be provided with multiple first stomatas（71）, the round straight tube（7）Be internally provided with piston（72）, spring（73）, institute
The first plenum chamber is stated by piston（72）It is divided into the first cavity locellus（12）, the second cavity locellus（13）, the first cavity locellus
（12）It is arranged on the second cavity locellus（13）Top, the capacitor body（2）, fixed cover（5）, the first wire（43）With
Two wires（44）It is respectively positioned on the first cavity locellus（12）In, the spring（73）Positioned at the second cavity locellus（13）In, the bullet
Spring（73）Upper end and piston（72）It is fixedly connected, the spring（73）Lower end and shell（1）Shell bottom be fixedly connected；It is described
Shell（1）Shell bottom on be additionally provided with multiple second stomatas（15）, the second stomata（15）With the second plenum chamber（14）Connection, it is described
Second plenum chamber（14）In be also filled with sponge block（8）.
A kind of 2. protected against explosion fan capacitor according to claim 1, it is characterised in that：The capacitor body（2）'s
Center is provided with cylindric plug（21）, plug（21）Center be provided with the through hole of regular hexagon（211）, through hole（211）'s
Central shaft and plug（21）Central shaft it is conllinear.
A kind of 3. protected against explosion fan capacitor according to claim 2, it is characterised in that：The through hole（211）Inside is set
It is equipped with fuse（9）, fuse（9）With the first wire（43）It is connected in series.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721032007.7U CN207038347U (en) | 2017-08-17 | 2017-08-17 | A kind of protected against explosion fan capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721032007.7U CN207038347U (en) | 2017-08-17 | 2017-08-17 | A kind of protected against explosion fan capacitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207038347U true CN207038347U (en) | 2018-02-23 |
Family
ID=61487878
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721032007.7U Expired - Fee Related CN207038347U (en) | 2017-08-17 | 2017-08-17 | A kind of protected against explosion fan capacitor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207038347U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111415820A (en) * | 2020-05-06 | 2020-07-14 | 广东德帝机电设备有限公司 | Explosion-proof power capacitor capable of actively cutting off power supply |
| CN114038683A (en) * | 2021-10-15 | 2022-02-11 | 厦门法拉电子股份有限公司 | Capacitor and preparation method thereof |
-
2017
- 2017-08-17 CN CN201721032007.7U patent/CN207038347U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111415820A (en) * | 2020-05-06 | 2020-07-14 | 广东德帝机电设备有限公司 | Explosion-proof power capacitor capable of actively cutting off power supply |
| CN114038683A (en) * | 2021-10-15 | 2022-02-11 | 厦门法拉电子股份有限公司 | Capacitor and preparation method thereof |
| CN114038683B (en) * | 2021-10-15 | 2023-08-25 | 厦门法拉电子股份有限公司 | Capacitor and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180223 Termination date: 20190817 |