CN201766045U - Fast fuse-link used for protecting semiconductor equipment - Google Patents
Fast fuse-link used for protecting semiconductor equipment Download PDFInfo
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- CN201766045U CN201766045U CN2010205171687U CN201020517168U CN201766045U CN 201766045 U CN201766045 U CN 201766045U CN 2010205171687 U CN2010205171687 U CN 2010205171687U CN 201020517168 U CN201020517168 U CN 201020517168U CN 201766045 U CN201766045 U CN 201766045U
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Abstract
The utility model discloses a fast fuse-link used for protecting semiconductor equipment, which comprises a fuse-tube, a plurality of pieces of fused mass, arc extinguishing medium and a pair of contact plates; the end face of the fuse-tube is formed with an axial cavity at the center; one surface of each piece of fuse mass is provided with a tin bridge; a plurality of rows of large holes are formed on the surface of each piece of fuse mass with same intervals and a row of small holes are formed besides each row of large holes; each row of large holes include a plurality of large-diameter holes with same size; each row of small holes include a plurality of small-diameter holes with same size; the row of large holes near the length center of each piece of fuse mass are all transverse waist shaped holes; a row of small holes are also formed between the row of waist shaped holes and the adjacent small holes; each piece of fuse mass can be bent into square wave shape using the center lines of a row of large holes and a row of small holes as creases, then all the fuse mass are inserted into the cavity of the fuse-tube in the manner that the section is a broken regular polygon; the arc extinguishing medium is filled between every fuse mass cavity and fuse mass; and the pair of contact plates are fastened on both ends of the fuse-tube.
Description
Technical field
The utility model relates to a kind of semiconductor equipment protection and uses the quick fuse body, and it is applicable to that rated direct voltage is 1800V DC, and rated current is 250A to 500A.
Background technology
Semiconductor equipment is protected with the usefulness of fuse-link (hereinafter to be referred as fuse-link) as the short-circuit protection of the complete set of equipments of rectifying installation and relevant device (comprising frequency converter, soft start etc.), semiconductor element and composition thereof, and is applicable in the DC loop.Fuse-link comprises fusion tube, be located at the melt in the fusion tube and be located at the contact plate at fusion tube two ends, is welded with Xi Qiao on the every melt 2, and has isodiametric aperture 22 (see figure 1)s of ordered series of numbers.When bigger short circuit current passed through melt, the narrow neck δ between the aperture was because heating effect of current is heated rapidly, and local temperature raises rapidly until melt fusing with a minute deenergizing; And when less overload current when the melt, the Xi Qiao that fusing point is lower at first melts, dystectic melt itself since metallurgical effect be dissolved in the liquid tin bridge, thereby disconnection melt and with the electric current disjunction.
Great majority design for protecting alternating current circuit and components and parts in the present like product; their rated voltage generally also all is no more than 1000V, is difficult to satisfy the protection requirement in the occasion of the high pressure occasion more than voltage 1000V and the direct current components and parts that need protection.Therefore when needing protection the direct current components and parts, employing will exchange fuse-link and hold by voltage drop and use on DC loop.In addition, common fuse-link adopts common earthenware as fusion tube, and its resistance to elevated temperatures and mechanical property are relatively poor.
In view of the foregoing, the applicant has developed the protection of a kind of semiconductor equipment with the direct current fuse-link and applied for patent (application number is 200920212155.6).This direct current fuse-link is applicable to 1800V DC, 250A to 500A occasion, and melt adopts the fine silver material, and punching out becomes the shape of variable cross-section, and the mounting hole of the aperture that has the ordered series of numbers diameter to differ, especially mid portion, makes it become truly direct current fuse-link.Reliable and stable, the long service life of operating chacteristics not only, its electrical property and high temperature resistant, mechanical property is also all very outstanding.But, not only be provided with some melt cavitys 12 on fusion tube 1 (see figure 2) of this direct current fuse-link, also offer a heat radiation cavity 11 that is positioned at some melt cavitys 12 central authorities.Because heat radiation cavity 11 and melt cavity 12 are isolated, so the manufacturing process of this fusion tube complexity and also be unfavorable for good heat radiation.The high energy of its monomer capacity is accomplished 1800V DC in addition, 250A, but if will be at 1800V DC, the occasion of 500A is used, and then needing the capacity with two monomers is 1800V DC, uses after the parallel connection of 250A direct current fuse-link, if need use in the occasion of other capacity levels, then adopt the bigger monomer series-connected or in parallel back of a plurality of voltage reduced-currents to use, it is big therefore not only to take up room, and has formed the waste of resource.
Summary of the invention
The purpose of this utility model is not high at the existing product electric pressure; rated current is little; mostly be the present situation of alternating current circuit design; a kind of semiconductor equipment protection quick fuse body is provided; its electric pressure is higher, can directly apply in high voltage circuit and the environment, and rated current is bigger; bigger capacity can be provided, be more suitable for protecting big capacity circuit.
The technical scheme that realizes above-mentioned purpose is: the quick fuse body is used in a kind of semiconductor equipment protection, comprises fusion tube, some melts, arc-extinguishing medium and a pair of contact plates.Wherein:
The end face central authorities of described fusion tube are axially arranged with a cavity;
On the surface of described every melt along its length spacing distance be that the multiple row macropore is vertically offered on L ground, same one side L1 distance of every row macropore is also vertically offered a row aperture;
Containing a plurality of measure-alike and longitudinal separation distances in described every row macropore is the large diameter hole of D1 for δ 1, diameter; Containing a plurality of measure-alike and longitudinal separation distances in described every row aperture is the small diameter bore of D2 for δ 2, diameter; Described every melt is being the horizontal mounting hole that radius is D1/2 near contained a plurality of large diameter holes in the row macropore at its length center, and also to be provided with a row diameter between this a row mounting hole and a row aperture nearby be the aperture of D2;
Described every melt is after folding line is bent into the square-wave form that crest height is LI with the center line of a described row macropore and the center line of a described row aperture all, is that the mode of the regular polygon of disconnection is interted in the cavity of described fusion tube to surround a cross section again;
Described arc-extinguishing medium enriches in the cavity of described fusion tube and is reaching between the described every melt between the cavity wall of described melt and described fusion tube;
Described a pair of contact plate is sealed on the two ends of described fusion tube, and the inner surface of described a pair of contact plate is connected with the two ends of described every melt respectively.
The quick fuse body use in the protection of above-mentioned semiconductor equipment, and wherein, described every melt also vertically is provided with Yi Xiqiao at close its length center and on a surface of the cavity center of described fusion tube.
The quick fuse body is used in the protection of above-mentioned semiconductor equipment, wherein, described every melt with surface that described Xi Qiao supports or opposes on be connected a pad.
The quick fuse body is used in above-mentioned semiconductor equipment protection, wherein, and described δ 2=2 δ 1, described D1=3.5D2.
The quick fuse body is used in the protection of above-mentioned semiconductor equipment, and wherein, the cavity cross section of described fusion tube is shaped as and the corresponding regular polygon of the quantity of described melt, and every limit is the circular arc limit, and the two ends on every limit also are connected with adjacent edge with circular arc respectively.
The quick fuse body is used in above-mentioned semiconductor equipment protection, and wherein, described fusion tube adopts No. 95 aluminium oxide ceramics insulating material to make.
Semiconductor equipment protection of the present utility model is to aim at the design of protection DC circuit with the technical scheme of quick fuse body, more can be competent at the protection task of DC circuit occasion; Operating chacteristics is stable, and is more reliable to the protection of circuit.Quick fuse body of the present utility model compared with prior art has following advantage:
1) electric pressure is higher, and rated current is bigger, and monomer just can reach 1800V DC, and 500A reduces installing space greatly, and energy consumption is little and easy for installation, has effectively reduced the wasting of resources; Can directly apply in middle low voltage circuit and the environment, and bigger capacity can be provided, be more suitable for protecting big capacity circuit;
2) the big aperture combining structure of melt has not only been improved electrical property and hot property, and its heat dispersion is improved, and cooperates the bigger cavity of fusion tube central authorities, and the temperature rise situation when effectively having improved work all is improved temperature rise and heat-sinking capability;
3) material of fusion tube adopts No. 95 aluminium oxide ceramics, makes the profile of fuse-link more attractive in appearance, and fusion tube central authorities big cavity structure is simplified its manufacturing process in addition, and also is convenient to the installation of melt;
4) support the Two bors d's oeuveres row to close, the flexibility of practice is higher.
Description of drawings
Fig. 1 a and Fig. 1 b are respectively semiconductor equipment the protection structural representation of melt in the direct current fuse-link and the perspective view of fusion tube of prior art;
Fig. 2 is the structural representation of semiconductor equipment protection of the present utility model with the quick fuse body;
Fig. 3 is the perspective view of semiconductor equipment protection of the present utility model with fusion tube in the quick fuse body;
Fig. 4 is the expanded view of semiconductor equipment protection of the present utility model with melt in the quick fuse body;
Fig. 5 a and Fig. 5 b are respectively the enlarged drawing of A portion and B portion among Fig. 4;
Fig. 6 is the perspective view of semiconductor equipment protection of the present utility model with melt in the quick fuse body;
Fig. 7 is the mounting structure figure of semiconductor equipment protection of the present utility model with melt in the quick fuse body.
Embodiment
In order to understand the technical solution of the utility model better, below by embodiment particularly and be described in detail in conjunction with the accompanying drawings:
See also Fig. 2 to Fig. 7, the quick fuse body is used in semiconductor equipment of the present utility model protection, comprises fusion tube 1, four melts 2, arc-extinguishing medium 4, a pair of contact plate 5 and indication pieces 6, wherein:
The outer surface of fusion tube 1 is a four-prism, and it adopts No. 95 aluminium oxide ceramics insulating material to make, and has good high temperature resistant and mechanical property, and is also comparatively attractive in appearance in appearance; The end face central authorities of fusion tube 1 offer the cavity 10 that a cross section is square, and this cavity 10 is both as the installation cavity of melt 2, also as the heat radiation cavity; Offer the radial perforation of a connection cavity 10 on the tube wall of fusion tube 1;
Every melt 2 adopts the fine silver of 99.9% content to be processed into the thin slice band with effective width;
Be that the mode of L is offered multiple row macropore 21 with the spacing distance at its length direction on the surface of every melt 2, and offer a row aperture 22 in the other L1 distance in the left side of every row macropore 21 respectively;
Containing a plurality of measure-alike and longitudinal separation distances in every row macropore 21 is the large diameter hole of D1 for δ 1 diameter, and containing a plurality of measure-alike and longitudinal separation distances in every row aperture 22 is the small diameter bore of D2 for δ 2 diameters; δ 2=2 δ 1 wherein, D1=3.5D2;
Be the horizontal mounting hole 21 ' that radius is D1/2 near contained a plurality of large diameter holes in the row macropore 21 at melt 2 length direction centers, the spacing distance of the center line of two semicircle of each horizontal mounting hole 21 ' is L2; Be listed as at this that also to be provided with a row diameter between a horizontal mounting hole 21 ' and the row aperture 22 nearby be the aperture 22 ' of D2; The distance of isolating this row aperture 22 between this row aperture 22 ' distance also is L2;
Every melt 2 is that folding line is bent into the square-wave form that crest height is L1 with a row macropore 21 and a row aperture 22 all, is that the mode of the square of disconnection is interted in the cavity 10 of fusion tube 1 to surround a cross section again;
Arc-extinguishing medium 4 is a quartz sand, and it is filled in the cavity 10 of fusion tube 1 and between the every melt 2 and between the cavity wall of melt 2 and fusion tube 1, in order to consolidation melt 2;
A pair of contact plate 5 is sealed on the two ends of fusion tube 1, and their inner surface is connected with the two ends of every melt 2 respectively; Melt 2 preferably adopts the mode of spot welding to be connected with contact plate 5, and this connected mode can make melt 2 be connected with contact plate 5 securely, and contact resistance is lower;
Indication piece 6 is plugged in the radial perforation of fusion tube 1, is used for reflecting the situation of cut-offfing of cavity 10 melts 2 of fusion tube 1.
In an illustrated embodiments, every melt 2 also vertically is being provided with a tin bridge 20 near its length center and on the surface of the cavity center of fusion tube 1.
In addition, because melt 2 is the fine silver material, and thinner thickness (is 0.08～0.10mm), becomes softer after bending.In assembling process, melt 2 is easy deformation when passing the cavity 10 of fusion tube 1; Therefore at the additional pad 3 that connects on the surface of the cavity wall of fusion tube 1 of melt 2, make melt 2 in the process of passing cavity 10, support arranged, can make things convenient for interting of melt 2, make melt 2 not yielding.
When circuit is short-circuited fault, when bigger short circuit current passes through melt 2, heated rapidly owing to heating effect of current apart from narrow neck between the macropore 21 for δ 1, local temperature rising rapidly fuses with a minute deenergizing until melt 2; And when less overload current when the melt 2, the tin bridge 10 that fusing point is lower at first melt, dystectic melt 2 itself since metallurgical effect be dissolved in the liquid tin bridge 10, thereby disconnection melt 2 and with the electric current disjunction.
Semiconductor equipment protection direct current fuse-link of the present utility model; by isodiametric multiple row aperture on the melt in the fuse-link of prior art being changed into the structure of big aperture combination; not only improved its electrical property; improved the voltage and current grade; its heat dispersion is improved; a bigger cavity that cooperates fusion tube central authorities, the temperature rise situation when effectively having improved work.Because the cavity of fusion tube central authorities both as the installation cavity of melt, also as the heat radiation cavity, therefore made heat dispersion better.
In sum, compare with the fuse-link of prior art, the electric pressure of dc fuse of the present utility model is higher, capacity is bigger, reliable and stable, the long service life of operating chacteristics not only, its electrical property and high temperature resistant, mechanical property is also all very outstanding.Be applicable to 1800V DC, 250A to 500A occasion, if select the melt of suitable thickness for use, monomer just can be accomplished 1800V DC, 500A reduces installing space greatly, and easy for installation.
Those of ordinary skill in the art will be appreciated that, above embodiment is used for illustrating the utility model, and be not to be used as qualification of the present utility model, as long as in connotation scope of the present utility model, all will drop in claims scope of the present utility model variation, the modification of the above embodiment.
Claims (6)
1. the quick fuse body is used in a semiconductor equipment protection, comprises fusion tube, some melts, arc-extinguishing medium and a pair of contact plates, it is characterized in that,
The end face central authorities of described fusion tube are axially arranged with a cavity;
On the surface of described every melt along its length spacing distance be that the multiple row macropore is vertically offered on L ground, same one side L1 distance of every row macropore is also vertically offered a row aperture;
Containing a plurality of measure-alike and longitudinal separation distances in described every row macropore is the large diameter hole of D1 for δ 1, diameter; Containing a plurality of measure-alike and longitudinal separation distances in described every row aperture is the small diameter bore of D2 for δ 2, diameter; Described every melt is being the horizontal mounting hole that radius is D1/2 near contained a plurality of large diameter holes in the row macropore at its length center, and also to be provided with a row diameter between this a row mounting hole and a row aperture nearby be the aperture of D2;
Described every melt is after folding line is bent into the square-wave form that crest height is LI with the center line of a described row macropore and the center line of a described row aperture all, is that the mode of the regular polygon of disconnection is interted in the cavity of described fusion tube to surround a cross section again;
Described arc-extinguishing medium enriches in the cavity of described fusion tube and is reaching between the described every melt between the cavity wall of described melt and described fusion tube;
Described a pair of contact plate is sealed on the two ends of described fusion tube, and the inner surface of described a pair of contact plate is connected with the two ends of described every melt respectively.
2. the quick fuse body use in semiconductor equipment according to claim 1 protection, it is characterized in that, described every melt also vertically is provided with Yi Xiqiao at close its length center and on a surface of the cavity center of described fusion tube.
3. the quick fuse body is used in semiconductor equipment according to claim 1 and 2 protection, it is characterized in that, described every melt with surface that described Xi Qiao supports or opposes on be connected a pad.
4. the quick fuse body is used in semiconductor equipment protection according to claim 1 and 2, it is characterized in that described δ 2=2 δ 1, described D1=3.5D2.
5. semiconductor equipment protection quick fuse body according to claim 1; it is characterized in that; the cavity cross section of described fusion tube is shaped as and the corresponding regular polygon of the quantity of described melt, and every limit is the circular arc limit, and the two ends on every limit also are connected with adjacent edge with circular arc respectively.
6. the quick fuse body is used in semiconductor equipment protection according to claim 1, it is characterized in that, described fusion tube adopts No. 95 aluminium oxide ceramics insulating material to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205171687U CN201766045U (en) | 2010-09-09 | 2010-09-09 | Fast fuse-link used for protecting semiconductor equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205171687U CN201766045U (en) | 2010-09-09 | 2010-09-09 | Fast fuse-link used for protecting semiconductor equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201766045U true CN201766045U (en) | 2011-03-16 |
Family
ID=43718654
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205171687U Expired - Lifetime CN201766045U (en) | 2010-09-09 | 2010-09-09 | Fast fuse-link used for protecting semiconductor equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201766045U (en) |
-
2010
- 2010-09-09 CN CN2010205171687U patent/CN201766045U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110316 |