CN105057175A - Tool and method for smearing heat-conducting silicone grease on surface of IEGT - Google Patents
Tool and method for smearing heat-conducting silicone grease on surface of IEGT Download PDFInfo
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- CN105057175A CN105057175A CN201510557025.6A CN201510557025A CN105057175A CN 105057175 A CN105057175 A CN 105057175A CN 201510557025 A CN201510557025 A CN 201510557025A CN 105057175 A CN105057175 A CN 105057175A
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- conducting silicone
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Abstract
The invention relates to a tool and method for smearing heat-conducting silicone grease on the surface of an IEGT. The tool comprises a bracket and a scraping plate, wherein IEGT is fixed on a base through the bracket; the base comprises a box body, a support, a supporting plate and an adjustable knob; the support and the supporting plate are fixed on the box body through a bolt; a screw rod is arranged at the top of the adjustable knob and is screwed into the supporting rod; the bracket is arranged at the top of the screw rod and the height of the bracket is adjusted through the screw rod; an upper frame comprises a fixed beam, a positioning block and a fixed knob; the positioning block is arranged on the fixed beam; and a net plate is fixedly connected with the fixed beam through the fixed knob. The tool has the advantages that the heat-conducting silicone grease is smeared by using the net plate and the scraping plate and the thickness of the net plate and the size of net holes are controlled so that the smearing amount of the heat-conducting silicone grease can be effectively controlled; when the heat-conducting silicone grease is smeared on the IEGT in batches, the consistency of a smearing amount is realized; and the heat-conducting silicone grease is smeared by using the scraping plate and the net plate so that the operation is convenient.
Description
Technical field
The present invention relates to a kind of for the IEGT surface instrument smeared of heat-conducting silicone grease and smearing method, be applicable to power electronic devices especially the smearing of IEGT surface heat-conducting silicone grease.
Background technology
IEGT is important power electronic devices, and by large-scale application in high-power frequency conversion, reactive-load compensation and direct current transportation field, device adopts flat crimping type structure, and reliability is high, and performance has reached the level of 4.5KV/1500A.Heat-conducting silicone grease is widely used on the IEGT installed surface on radiator, its object is to fill up the gap between IEGT installed surface and radiator, reach evenly, more effective radiating effect, avoid IEGT temperature too high and damage.For ensureing that heat-conducting silicone grease is evenly distributed on IEGT, its coating processes and instrument most important.Heat-conducting silicone grease main component is silicone oil and filler, and silicone oil ensure that certain mobility, and filler is the powder grinding very thin.The meaning of heat-conducting silicone grease is the minim gap be filled with between IEGT and radiator, ensure that thermal conductivity.Current IEGT surface heat-conducting silicone grease dauber is generally sponge roller, namely pick a small amount of heat-conducting silicone grease round brush with sponge roller to smear, the advantage of this mode is simple to operate, but the bad control of applying amount, if it is excessive to smear, one deck silicone grease layer is formed between IEGT and radiator, then sinking path becomes IEGT-heat-conducting silicone grease-radiator, thermal conductivity factor due to heat-conducting silicone grease is about 1 ~ 2W/ (mK), and the thermal conductivity factor of aluminium alloy heat radiator is at more than 300W/ (mK), heat-conducting silicone grease has become the factor hindering heat transfer in this case.Therefore smearing heat-conducting silicone grease must be appropriate, and IEGT smears thin layer, and wants evenly, to it is necessary to adopt a kind of specific purpose tool to smear heat-conducting silicone grease, well can control applying amount, can ensure again to smear evenly.
Number of patent application is: 201310045825.0, disclose a kind of application device and smearing method of thermal conductive silicon lipid layer, for the smearing of thermal conductive silicon lipid layer of IGBT, in the program, printing zone shape limits, and IGBT module part easily occurs and smears less than or be applied to without the need to smearing position; This technical scheme versatility is poor simultaneously, and printing zone position is fixed, and is only applicable to a kind of IGBT module of model.And IEGT cooling requirements is higher, need to smear more accurately, therefore this technical scheme cannot be suitable for.
Summary of the invention
For overcoming the deficiencies in the prior art, the object of this invention is to provide a kind of IEGT surface heat-conducting silicone grease dauber and smearing method, smearing in order to the IEGT Modular surface in various model, highly versatile, convenient operation, ensures to smear evenly, effectively controls heat-conducting silicone grease smearing thickness.
For achieving the above object, the present invention is achieved through the following technical solutions:
A kind of IEGT surface heat-conducting silicone grease dauber, comprise base, upper ledge, web plate, base and upper ledge are movably hinged, IEGT is fixed on base, web plate is fixed in upper ledge, also comprises support, scraper plate, and IEGT is fixed on base by support, described base comprises box body, pillar, gripper shoe, adjusting knob, and pillar and gripper shoe are bolted on box body; Adjusting knob top is screw rod, and screw in gripper shoe, screw tip is provided with support, regulates support height by screw rod;
Described upper ledge comprises built-in beam, locating piece, fixed knob, and built-in beam is provided with locating piece, and web plate is fixed by fixed knob and built-in beam; Fillet is led in scraper plate lower surface;
Position corresponding with IEGT on web plate is evenly provided with some mesh, and mesh form is identical with IEGT shape, and web plate thickness is identical with heat-conducting silicone grease layer thickness.
Described support is integral type structure.
Described base, upper ledge are all fixed with handle.
The computational process of the described mesh distribution gross area:
1. IEGT installed surface area S:
S＝πr
2
In formula: r is the radius of IEGT installed surface;
2. the consumption V of heat-conducting silicone grease is calculated:
V＝S×H
In formula: H is the heat-conducting silicone grease thickness of IEGT standard, the heat-conducting silicone grease thickness of standard is 10-15 μm;
3. mesh distribution gross area K is calculated
K＝V/L
In formula: L is the thickness of web plate.
IEGT surface heat-conducting silicone grease smearing method, comprises the following steps:
1) select corresponding web plate and support according to IEGT model, namely heat-conducting silicone grease thickness is identical with web plate thickness, and IEGT installed surface area and the mesh gross area K that distributes is corresponding;
2) by stentplacement on base, rotation of adjustment knob makes support maintenance level, is steadily placed on support by IEGT;
3) web plate is placed in upper ledge, tightens fixed knob, fixed network board;
4) holding handle makes upper ledge be in closed condition, and now the lower surface of web plate is attached on IEGT upper surface, confirms that mesh and IEGT radiating surface just in time coincide;
5) heat-conducting silicone grease is placed in the upper surface of web plate, a hand lives handle, and an other hand firmly presses down scraper plate makes the surface with fillet be attached to web plate upper surface, and heat-conducting silicone grease is scraped another side from web plate, blade coating 5 times, makes heat-conducting silicone grease fill and lead up mesh uniformly so back and forth;
6) hold handle and open upper ledge, now heat-conducting silicone grease spreads upon on IEGT radiating surface uniformly.
Compared with prior art, the invention has the beneficial effects as follows:
For smearing of power electronic devices especially IEGT surface heat-conducting silicone grease, concrete beneficial effect is:
1) adopt web plate and scraper plate to smear heat-conducting silicone grease, by the control to web plate thickness and mesh size, effectively can control the applying amount of heat-conducting silicone grease; When smearing heat-conducting silicone grease to IEGT batch, achieve the uniformity of applying amount;
2) by ensureing to the control of mesh size on web plate and distribution the uniformity that heat-conducting silicone grease is smeared;
3) highly versatile, when the IEGT blade coating heat-conducting silicone grease to different model, only need change support and web plate.
4) scraper plate and web plate is adopted to smear heat-conducting silicone grease, easy to operate.
Accompanying drawing explanation
Fig. 1 is structural representation one of the present invention.
Fig. 2 is structural representation two of the present invention.
Fig. 3 is using state structural representation of the present invention.
Fig. 4 is understructure schematic diagram.
Fig. 5 is mesh-plate structure schematic diagram.
Fig. 6 is supporting structure schematic diagram.
Fig. 7 is mesh layout drawing.
In figure: 1-base 2-upper ledge 3-web plate 4-support 5-scraper plate 6-box body 7-pillar 8-gripper shoe 9-adjusting knob 10-handle 11-built-in beam 12-locating piece 13-fixed knob 14-IEGT installed surface border.
Detailed description of the invention
Below in conjunction with Figure of description, the present invention is described in detail, but it should be noted that enforcement of the present invention is not limited to following embodiment.
See Fig. 1-Fig. 7, a kind of IEGT surface heat-conducting silicone grease dauber, comprise base 1, upper ledge 2, web plate 3, support 4, scraper plate 5, base 1 and upper ledge 2 are movably hinged, and IEGT is fixed on support 4, support 4 is arranged on base 1, web plate 3 is fixed in upper ledge 2, and position corresponding with IEGT on web plate 3 is evenly provided with some mesh, and scraper plate 5 entirety adopts PVC plastic to process, fillet is led in scraper plate 5 lower surface, during to reduce blade coating and the frictional force on web plate 3 surface.
Base 1 comprises box body 6, pillar 7, gripper shoe 8, adjusting knob 9, and pillar 7 and gripper shoe 8 are bolted on box body 6; Adjusting knob 9 top is screw rod, and screw in gripper shoe 8, screw tip is provided with support 4, regulates support 4 height by screw rod.The front end of box body 6 is provided with handle 10, and base 1 is general, can be applicable to smearing of Multiple Type IGET heat-conducting silicone grease by changing support 4.
Upper ledge 2 comprises built-in beam 11, locating piece 12, fixed knob 13, and built-in beam 11 is provided with locating piece 12, and web plate 3 is fixed by fixed knob 13 and built-in beam 11.Support 4 is integral type structure.Upper ledge 2 can be general, when the IEGT blade coating heat-conducting silicone grease to different model, only need change the web plate 3 of corresponding specification.
Web plate 3 adopts 304 stainless steels to make, thickness 0.12mm, surface has circular mesh, the size of circular mesh and distribution are according to IEGT installed surface size and required heat-conducting silicone grease amount design of smearing, utilize web plate 3, applying amount that scraper plate 5 blade coating effectively can control heat-conducting silicone grease, and the uniformity of silicone grease in IEGT surface distributed can be ensured.
Circular mesh design is as follows:
1. IEGT installed surface area S:
S＝πr
2
In formula: r is the radius of IEGT installed surface;
2. the consumption V of heat-conducting silicone grease is calculated:
V＝S×H
In formula: H is the heat-conducting silicone grease thickness of IEGT standard, the heat-conducting silicone grease thickness of standard is 10-15 μm;
3. mesh distribution gross area K is calculated
K＝V/L
In formula: L is the thickness of web plate.
See Fig. 7, circular mesh is distributed on web plate corresponding to IEGT installed surface 3, and distance IEGT installed surface border 14 retains the distance of 5mm, such energy ensures that the heat-conducting silicone grease after smearing evenly can be diffused into whole IEGT installed surface, do not overflow again IEGT installed surface border simultaneously, reach the effect accurately controlling applying amount.During concrete operations, can reservation 5mm after calculating K value.
See Fig. 6, support 4, according to IEGT profile arrangement, adopts 304 stainless steel triggers to add and forms, regulating height by adjusting knob 9, for supporting IEGT, making IEGT upper surface maintenance level, when the IEGT blade coating heat-conducting silicone grease to different model, need the support 4 changing correspondingly-sized.
Smear heat-conducting silicone grease concrete operations as follows:
1, be placed on base 1 by support 4, rotation of adjustment knob 9 makes support 4 maintenance level, is steadily placed on support 4 by IEGT, sees Fig. 1, Fig. 2.
2, web plate 3 is placed in upper ledge 2, tightens fixed knob 13, see Fig. 1, Fig. 2.
3, holding handle 10 makes upper ledge 2 be in closed condition, and now the lower surface of web plate 3 is attached on IEGT upper surface, confirms that circular mesh and IEGT radiating surface just in time coincide, sees Fig. 3.
4, suitable heat-conducting silicone grease is placed in the upper surface of web plate 3, a hand lives handle 10, an other hand firmly presses down scraper plate 5 makes the surface with fillet be attached to web plate 3 upper surface, by heat-conducting silicone grease from web plate 3 while scrape another side, blade coating 5 times, makes heat-conducting silicone grease fill and lead up circular mesh uniformly so back and forth.
5, hold handle 10 and open upper ledge 2, now heat-conducting silicone grease by appropriate, spread upon IEGT on the surface uniformly.
Smear heat-conducting silicone grease on IEGT surface by web plate 3 and scraper plate 5, control the applying amount of heat-conducting silicone grease exactly, make heat-conducting silicone grease in the distribution of IEGT surface uniform, thus improve the radiating effect of IEGT.
Claims (5)
1. an IEGT surface heat-conducting silicone grease dauber, comprise base, upper ledge, web plate, base and upper ledge are movably hinged, IEGT is fixed on base, and web plate is fixed in upper ledge, it is characterized in that, also comprise support, scraper plate, IEGT is fixed on base by support, and described base comprises box body, pillar, gripper shoe, adjusting knob, and pillar and gripper shoe are bolted on box body; Adjusting knob top is screw rod, and screw in gripper shoe, screw tip is provided with support, regulates support height by screw rod;
Described upper ledge comprises built-in beam, locating piece, fixed knob, and built-in beam is provided with locating piece, and web plate is fixed by fixed knob and built-in beam; Fillet is led in scraper plate lower surface;
Position corresponding with IEGT on web plate is evenly provided with some mesh, and mesh form is identical with IEGT shape, and web plate thickness is identical with heat-conducting silicone grease layer thickness.
2. a kind of IEGT surface according to claim 1 heat-conducting silicone grease dauber, it is characterized in that, described support is integral type structure.
3. a kind of IEGT surface according to claim 1 heat-conducting silicone grease dauber, is characterized in that, described base, upper ledge are all fixed with handle.
4. a kind of IEGT surface according to claim 1 heat-conducting silicone grease dauber, is characterized in that, the computational process of the described mesh distribution gross area:
1. IEGT installed surface area S:
S＝πr
2
In formula: r is the radius of IEGT installed surface;
2. the consumption V of heat-conducting silicone grease is calculated:
V＝S×H
In formula: H is the heat-conducting silicone grease thickness of IEGT standard, the heat-conducting silicone grease thickness of standard is 10-15 μm;
3. mesh distribution gross area K is calculated
K＝V/L
In formula: L is the thickness of web plate.
5. the smearing method utilizing a kind of IEGT surface heat-conducting silicone grease dauber described in claim 1-4 any one to realize, comprises the following steps:
1) select corresponding web plate and support according to IEGT model, namely heat-conducting silicone grease thickness is identical with web plate thickness, and IEGT installed surface area and the mesh gross area K that distributes is corresponding;
2) by stentplacement on base, rotation of adjustment knob makes support maintenance level, is steadily placed on support by IEGT;
3) web plate is placed in upper ledge, tightens fixed knob, fixed network board;
4) holding handle makes upper ledge be in closed condition, and now the lower surface of web plate is attached on IEGT upper surface, confirms that mesh and IEGT radiating surface just in time coincide;
5) heat-conducting silicone grease is placed in the upper surface of web plate, a hand lives handle, and an other hand firmly presses down scraper plate makes the surface with fillet be attached to web plate upper surface, and heat-conducting silicone grease is scraped another side from web plate, blade coating 5 times, makes heat-conducting silicone grease fill and lead up mesh uniformly so back and forth;
6) hold handle and open upper ledge, now heat-conducting silicone grease spreads upon on IEGT radiating surface uniformly.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510557025.6A CN105057175A (en) | 2015-09-02 | 2015-09-02 | Tool and method for smearing heat-conducting silicone grease on surface of IEGT |
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| CN201510557025.6A CN105057175A (en) | 2015-09-02 | 2015-09-02 | Tool and method for smearing heat-conducting silicone grease on surface of IEGT |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108745774A (en) * | 2018-05-02 | 2018-11-06 | 格力电器（武汉）有限公司 | Fan module machining device and fan module machining method |
| CN109742046A (en) * | 2019-03-12 | 2019-05-10 | 天地科技股份有限公司上海分公司 | Heat-conducting silicone grease quantifies coating unit and quantitative coating method |
| CN115365054A (en) * | 2022-07-26 | 2022-11-22 | 深圳汉诺医疗科技有限公司 | Smearing mechanism, smearing device comprising smearing mechanism and smearing method |
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| CN115365054A (en) * | 2022-07-26 | 2022-11-22 | 深圳汉诺医疗科技有限公司 | Smearing mechanism, smearing device comprising smearing mechanism and smearing method |
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Application publication date: 20151118 |
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