CN201319297Y - Magnetic core heat dissipating device - Google Patents
Magnetic core heat dissipating device Download PDFInfo
- Publication number
- CN201319297Y CN201319297Y CNU2008201253604U CN200820125360U CN201319297Y CN 201319297 Y CN201319297 Y CN 201319297Y CN U2008201253604 U CNU2008201253604 U CN U2008201253604U CN 200820125360 U CN200820125360 U CN 200820125360U CN 201319297 Y CN201319297 Y CN 201319297Y
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- magnetic core
- fin
- center pillar
- heat
- core center
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Abstract
The utility model discloses a magnetic core heat dissipating device, which comprises a radiating fin attached to and wrapped outside a magnetic core stele; and the radiating fin extends outwards and is provided with an auxiliary radiation tooth. The magnetic core heat dissipating device provided by the utility model has the advantages of good radiating effect, convenient installation and low cost.
Description
Technical field
The utility model relates to a kind of magnetic core heat abstractor.
Background technology
Along with electronic product develops towards microminiaturization, high density, powerful direction, power device on the product, working temperature as electromagnetic components such as inductance, transformers will be more and more higher, sometimes even surpass the working temperature that element itself can bear, therefore how to reduce the focus that the temperature of above-mentioned power device when product work just naturally and understandably just becomes the industry concern.At present, comparatively common solution: a kind of is that bonding radiator is used for heat radiation on the magnetic core of power device; Another kind is to use heat conductive pad on the magnetic core and between the casing, finally dispelling the heat by casing.
There are many defectives in the above-mentioned solution: 1, dispel the heat: because by magnetic core top or bottom heat radiation for the mode that adopts bonding radiator, therefore need to use the bigger radiator of the bonding volume of heat-conducting glue, bonding area is bigger, the heat-conducting glue that uses is more, and needs are selected the heat-conducting glue of suitable species, the thermal coefficient of expansion of this heat-conducting glue (CTE) need with the coupling of magnetic core and radiator, otherwise because bond area is big, the situation of magnetic core cracking appears easily; And it is enough big that the conductive coefficient of this heat-conducting glue is wanted, and says that usually the conductive coefficient of heat-conducting glue is directly proportional with flow behavior, and promptly the heat-conducting glue that conductive coefficient is bigger is more liquid; But the flowability of this heat-conducting glue can not be too strong, otherwise be unfavorable for the operation that radiator is adhesively fixed; Therefore the selection to heat-conducting glue is relatively more difficult, and the cost of heat-conducting glue is also higher.
2, adopt the radiating mode of casing+heat conductive pad: because heat conductive pad needs just that normal heat radiation of certain precompressed amount (normally 30% of thickness), therefore need to confirm the height tolerance of magnetic core, and magnetic core producer height to magnetic core when making does not generally have strict control, tolerance is generally about 0.5mm, add the tolerance of PCB and casing, summation generally can be very big (surpassing 1.0mm), therefore magnetic core apart from the certain prerequisite of the total height of casing under, total tolerance very easily surpasses the deformable amount of heat conductive pad, finally influences its radiating effect.The cost of heat conductive pad is higher in addition, and the thickness of heat conductive pad is big more, and cost is also just high more.
The utility model content
The technical problems to be solved in the utility model provides a kind of good heat dissipation effect, easy for installation, magnetic core heat abstractor that cost is low.
The utility model solves above-mentioned technical problem by the following technical programs: a kind of magnetic core heat abstractor, and comprising fits is wrapped in the extra-stelar fin of magnetic core, and described fin is outward extended with the auxiliary heat dissipation tooth.
Described fin comprises and is set with the last fin that is fitted in magnetic core center pillar top and bottom and following fin.
Described fin sticks on the magnetic core center pillar by Heat Conduction Material.
Described upward fin is two relative ` shape fin, and last fin vertically part is fitted in magnetic core center pillar lateral surface, and its horizontal component is a radiation tooth, is fitted in magnetic core center pillar end face,
The shape fin also is outward extended with the auxiliary heat dissipation tooth.
The width of the vertical part of last fin cooperates with the pore size between magnetic core center pillar and the line bag, is inserted in the space and with the magnetic core center pillar and fits.
The described horizontal component of going up fin has extended upward the auxiliary heat dissipation tooth with vertical junction partly.
Described down fin be two relative
Shape fin, following fin vertically part are fitted in magnetic core
Center pillar lateral surface, horizontal component are fitted in the magnetic core bottom surface, and following fin also is outward extended with the auxiliary center pillar lateral surface that looses, and horizontal component is fitted in the magnetic core bottom surface, and following fin also is outward extended with the auxiliary heat dissipation tooth.
The width of the vertical part of following fin cooperates with the pore size between magnetic core center pillar and the line bag, is inserted in the space and with the magnetic core center pillar and fits.
The described horizontal component outer end of fin down is extended with the auxiliary heat dissipation tooth downwards.
The utility model is to adopt the mode of directly the magnetic core center pillar being dispelled the heat by fin, because normally the temperature of center pillar is higher during magnetic core work, therefore not by magnetic core top or lower surface, and directly heat is derived from the center pillar position, being equivalent to from pyrotoxin instant heating quantity set the zone so directly conducts heat by metal, and it is dispersed in the air the most at last, and fin is the parcel magnetic core center pillar of fitting, can be with the heat of its generation in time, fully derive.Fin is exposed at radiation tooth and the auxiliary heat dissipation tooth that the outer partial design of magnetic core becomes the gear piece shape outward, can rapidly the heat that conducts out from the magnetic core center pillar be dispersed into the air.The utility model good heat dissipation effect, cost are low, easy for installation, the working temperature of magnetic core can be reduced within the acceptable scope of product.
Because the tolerance matching problem of magnetic core and fin, install for convenience and it can fully be fitted, fin is divided into upper and lower fin two parts, and upper and lower fin two parts also are divided into relative two, burst is progressively installed during installation, do not reduced owing to tolerance matches and caused the problem of plug-in mounting difficulty, each fin can both fully be fitted in outside magnetic core center pillar or the magnetic core.
The utility model fin with its bonding and magnetic core center pillar lateral surface, fits tightly itself and magnetic core center pillar by heat-conducting glue, the heat of magnetic core center pillar is exported on the fin by heat-conducting glue dispel the heat.Because the CTE of heat-conducting glue and magnetic core does not match the problem that causes and the area of bonding radiator very big relation is arranged.Owing to by the heat radiation of magnetic core top or bottom, therefore need the bigger radiator of bonding volume, bond area is bigger in the prior art, so CTE do not match the characteristic performance obviously, finally causes the magnetic core cracking.On the contrary, the utility model is that (heat is concentrated from the magnetic core center pillar, the temperature highest point) heat is directly derived, therefore the fin area compared with prior art can reduce a lot, promptly use bonding area of heat-conducting glue less (only being the center pillar part) so the CTE property difference that do not match less, the phenomenon of magnetic core cracking can not occur with magnetic core.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples, in the accompanying drawing:
Fig. 1 is the structural representation of the utility model embodiment;
Fig. 2 is the left view of Fig. 1;
Fig. 3 is the vertical view of Fig. 1;
Fig. 4 is the structural representation of fin on the utility model;
Fig. 5 is the left view of Fig. 4;
Fig. 6 is the vertical view of Fig. 4;
Fig. 7 is the structural representation of fin under the utility model;
Fig. 8 is the left view of Fig. 7;
Fig. 9 is the vertical view of Fig. 7.
Embodiment
As shown in Figure 1, 2, 3, a kind of magnetic core heat abstractor comprising that applying is wrapped in the fin 1,2 outside the magnetic core center pillar 3, and described fin 1,2 is outward extended with auxiliary heat dissipation tooth 4.Described fin 1,2 comprises and is set with last fin 1 and the following fin 2 that is fitted in magnetic core center pillar 3 tops and bottom, described fin 1,2 sticks on the magnetic core center pillar 3 by Heat Conduction Material, Heat Conduction Material can be heat-conducting glue, also can be other Heat Conduction Materials that are applicable to magnetic core.
Shown in Fig. 4,5,6, described go up fin 1 comprise two relative
The shape fin, the horizontal component 1a of last fin has extended upward auxiliary heat dissipation tooth 4 with the junction of vertical part 1b.The position that auxiliary heat dissipation tooth 4 is provided with can also be in the outer end of last fin horizontal component 1a, and auxiliary heat dissipation tooth 4 can be horizontal direction, incline direction etc. also from fin 1 outside bearing of trend, so long as get final product to aerial extension.
Shown in Fig. 7,8,9, described down fin 2 comprise two relative
The shape fin, following fin 2 also is outward extended with auxiliary heat dissipation tooth 4.The described horizontal component 2a outer end of fin down is extended with auxiliary heat dissipation tooth 4 downwards, and auxiliary heat dissipation tooth 4 can also be horizontal direction, incline direction etc. from fin 1 outside bearing of trend, so long as get final product to aerial extension.
As shown in Figure 1, 2, 3, the width of the vertical part 1b of last fin cooperates with pore size between magnetic core center pillar 3 and the line bag 5, be inserted in the space and be fitted in magnetic core center pillar 3 lateral surfaces, last fin horizontal component 1a is a radiation tooth, be fitted in magnetic core center pillar 3 end faces, the width of the vertical part 2b of following fin cooperates with pore size between magnetic core center pillar 3 and the line bag 5, is inserted in the space and is fitted in magnetic core center pillar 3 lateral surfaces, and following fin horizontal component 2a is fitted in the magnetic core bottom surface.
During installation, at the inboard coating of fin heat-conducting glue, afterwards it is close to the magnetic core center pillar along the space between magnetic core center pillar and the line bag and inserts earlier, the heat that last magnetic core center pillar produces is solidified heat-conducting glue.
Claims (9)
1, a kind of magnetic core heat abstractor is characterized in that, comprising fits is wrapped in the extra-stelar fin of magnetic core, and described fin is outward extended with the auxiliary heat dissipation tooth.
2, magnetic core heat abstractor according to claim 1 is characterized in that, described fin comprises and is set with the last fin that is fitted in magnetic core center pillar top and bottom and following fin.
3, magnetic core heat abstractor according to claim 2 is characterized in that, described fin sticks on the magnetic core center pillar by Heat Conduction Material.
4, according to claim 2 or 3 described magnetic core heat abstractors, it is characterized in that, described upward fin is two relative " L shaped " fin, the vertical part of " L shaped " fin is fitted in magnetic core center pillar lateral surface, its horizontal component is a radiation tooth, be fitted in magnetic core center pillar end face, " L shaped " fin also is outward extended with the auxiliary heat dissipation tooth.
5, magnetic core heat abstractor according to claim 4 is characterized in that, the width of the vertical part of last fin cooperates with the pore size between magnetic core center pillar and the line bag, is inserted in the space and with the magnetic core center pillar and fits.
6, magnetic core heat abstractor according to claim 5 is characterized in that, the described horizontal component of going up fin has extended upward the auxiliary heat dissipation tooth with vertical junction partly.
7, according to claim 2 or 3 described magnetic core heat abstractors, it is characterized in that described fin down is two opposing L shape fin, following fin vertically part is fitted in magnetic core center pillar lateral surface, horizontal component is fitted in the magnetic core bottom surface, and following fin also is outward extended with the auxiliary heat dissipation tooth.
8, magnetic core heat abstractor according to claim 7 is characterized in that, the width of the vertical part of following fin cooperates with the pore size between magnetic core center pillar and the line bag, is inserted in the space and with the magnetic core center pillar and fits.
9, magnetic core heat abstractor according to claim 8 is characterized in that, the described horizontal component outer end of fin down is extended with the auxiliary heat dissipation tooth downwards.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201253604U CN201319297Y (en) | 2008-07-08 | 2008-07-08 | Magnetic core heat dissipating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201253604U CN201319297Y (en) | 2008-07-08 | 2008-07-08 | Magnetic core heat dissipating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201319297Y true CN201319297Y (en) | 2009-09-30 |
Family
ID=41198059
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201253604U Expired - Lifetime CN201319297Y (en) | 2008-07-08 | 2008-07-08 | Magnetic core heat dissipating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201319297Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013159478A1 (en) * | 2012-04-23 | 2013-10-31 | 深圳市晶福源电子技术有限公司 | Device with radiator |
-
2008
- 2008-07-08 CN CNU2008201253604U patent/CN201319297Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013159478A1 (en) * | 2012-04-23 | 2013-10-31 | 深圳市晶福源电子技术有限公司 | Device with radiator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: No. 1510, Kansas Avenue, lureen, Ohio, USA Patentee after: Walteff energy systems company Address before: The United States of Ohio city F Lorain Street No. 1122 Patentee before: Emerson Network Power Co., Ltd. |
|
| CP03 | Change of name, title or address | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090930 |
|
| CX01 | Expiry of patent term |