EP1702165A1 - Anordnung für die kühlung einer leiterplatte oder dergleichen - Google Patents
Anordnung für die kühlung einer leiterplatte oder dergleichenInfo
- Publication number
- EP1702165A1 EP1702165A1 EP05791377A EP05791377A EP1702165A1 EP 1702165 A1 EP1702165 A1 EP 1702165A1 EP 05791377 A EP05791377 A EP 05791377A EP 05791377 A EP05791377 A EP 05791377A EP 1702165 A1 EP1702165 A1 EP 1702165A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- circuit board
- fan
- support
- carrying
- printed circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
- F04D25/0606—Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump
- F04D25/0613—Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump the electric motor being of the inside-out type, i.e. the rotor is arranged radially outside a central stator
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D19/00—Axial-flow pumps
- F04D19/002—Axial flow fans
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
- F04D25/0693—Details or arrangements of the wiring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/52—Casings; Connections of working fluid for axial pumps
- F04D29/54—Fluid-guiding means, e.g. diffusers
- F04D29/541—Specially adapted for elastic fluid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/60—Mounting; Assembling; Disassembling
- F04D29/601—Mounting; Assembling; Disassembling specially adapted for elastic fluid pumps
Definitions
- the invention relates to an arrangement for cooling a printed circuit board or the like.
- this object is achieved by an arrangement for cooling a printed circuit board according to claim 1.
- a support frame is provided, to which a small or micro fan is attached, and on this support frame, an air guide is provided, which serves to the flow direction to divert at least a portion of the air transported through the air passage opening during operation.
- an air flow is generated, which is particularly suitable for the cooling of a printed circuit board, and it is possible even below such an arrangement to arrange components on the circuit board and to cool by the arrangement.
- High heat generation devices may e.g. be placed directly at the fan in the strongest airflow. This may either be directed towards the printed circuit board, or away from it, to suck warm air from the circuit board.
- Such a support frame can itself form part of the fan, holding it at a distance from a circuit board to be cooled, and also directs the air flow generated by the fan in the desired direction.
- Such a support frame can be mounted easily and foolproof and is mounted very stable after mounting on the circuit board.
- FIG. 1 shows a schematic section through an inventive arrangement with a support frame, a small fan attached thereto, and an air guide for deflecting the air flow generated by the fan,
- FIG. 2 is a view obliquely from below of the fan of FIG. 1, with a partial sectional view of the electrical connection elements of the small fan,
- FIG. 3 is a partially sectioned side view of the arrangement according to Figures 1 and 2, which is shown here after its mounting on a circuit board,
- FIG. 6 is a three-dimensional view analogous to FIG. 5, but seen from below, ie from the circuit board side,
- FIG. 7 is an exploded view of a printed circuit board, a support frame, a fan, and the electrical connection elements of this fan,
- Fig. 8 shows a variant of FIG. 3, in which instead of a latching hook, a round double spring is used, which has an annular groove which in a round bore 70 of Printed circuit board 2 is engaged,
- FIGS. 9 to 23 different variants of the air-conducting bell used in FIGS. 1 to 8; these variants make it possible to cool electronic components, which are arranged directly under the support frame, with a predetermined proportion of the cooling air flow generated by the small fan,
- Fig. 24 is a greatly enlarged, exploded view of another
- Embodiment of an inventive arrangement with a support frame and a small fan which is provided with a board for its electrical connection and which, including board, is attached to this support frame, and
- Fig. 25 is a perspective view of the arrangement of FIG. 24 in a partial section, taken along the line XXV-XXV of Fig. 24, wherein the board in its mounted state, but without the fan, is shown.
- FIG. 1 shows a schematic longitudinal section through an arrangement 1 according to the invention.
- This has as main components a fan 3 with a fan 31, the fan blades are shown at 32, and with an electric motor 33 for driving the fan 31st
- the arrangement 1 has a support frame 4, which carries the fan 3 and to which it is attached.
- supporting frame 4 supporting elements 41 a and latching elements 41 b are formed.
- latching elements 41 b the support frame 4 can be fastened on a printed circuit board 2 by clipping.
- FIG. 8 shows an alternative, preferred type of fastening on the printed circuit board 2.
- the fan 3 is arranged with its fan 31 so that it sucks on its side facing away from the circuit board 2 side C an air flow with a direction substantially perpendicular to the circuit board 2 direction (the direction of rotation axis A of the fan 3). At least part of this air flow is through an air guide 5, which is about the shape a bell has, deflected so that this air flow is approximately parallel to the circuit board 2 and thereby optimally cool the components 21.
- the arrangement 1 thus has a multiple function:
- the locking elements 41 b have at their ends in each case a latching hook 43 for engaging behind a recess 22 of the printed circuit board 2.
- the support elements 41 a have a positioning extension 44 for fixing the position an associated, complementary recess 23 of the printed circuit board 2.
- the electrical connection of the electric motor 33 can be done by soldering in the solder bath together with the soldering of the components 21.
- the electric motor 33 is electrically connected by means of a circuit board 6 with wire connections 61. This makes it possible to use normal fans with standardized electrical connections.
- the board 6 rests in this case on a flange 3 supporting the fan or supporting member 45 of the support frame 4.
- the ends 62 of the wire connections 61 are soldered in the assembled state with conductor tracks on the circuit board 2.
- the support member 45 has an inner upstanding edge 48 and an outer upstanding edge 49, which serve to receive the board 6.
- the latter has, as shown in Fig. 7, a radially extending connecting part 64, and this is guided by an interruption 49 a (Fig. 5) of the outer edge 49 radially outward and with the vertically extending connecting leads 61 connected.
- the recess 48a in the inner edge 48 stretches for attachment of the motor 33 on the support member 45th
- e.g. use three connecting leads 61.
- the electronic components for the motor 33 e.g. a Hall sensor and a Kommut istsbaustein located in the board 6, and therefore this has relative to the motor 33 a predetermined position.
- an electronically commutated micro fan has very small dimensions.
- the ebm-papst 250 series electronically commutated DC axial fan has dimensions of 25 x 25 x 8 mm, a weight of 8 g, and a power consumption of 0.2 to 0.6 W.
- the lines 61 are partially surrounded for their protection by a sheath 51, which is formed on the support frame 4.
- the arrangement 1 is formed on its side facing away from the circuit board 2 side C to rest against a housing wall or the like. So that no rattling noises arise here, and to separate cold and warm air from each other, a sealing ring 7 is provided, which is arranged in an annular groove 71 of a front portion 42 of the support frame 4.
- Fig. 5 shows a view obliquely from above on a not yet mounted support frame 4, wherein the fan 3, the board 6, the wire connection 61 and the sealing ring 7 are not shown.
- the support member 45 is integrally formed on the support frame 4 via webs 45a.
- the made of plastic together with the support frame 4 support members 41 a and the locking members 41 b, which are provided at their ends with latching projections 43 are resilient, so that they can engage behind edges or openings in or on the circuit board 2.
- the fan 31 is located in Fig. 1 above an annular air passage opening 47, whose outer periphery 47a, often referred to as "Venturi", is formed by an annular member 40 of the support frame 4.
- the outer periphery 47a widens downward.
- the Heilstromleitglied 5 is disposed below the air passage opening 47 so that it deflects the generated air flow in a direction approximately parallel to the printed circuit board 2.
- the Heilstromleitglied 5 is preferably formed integrally with the support frame 4 and formed below the support member 45.
- the air guide member 5 preferably has approximately the shape of a bell, which widens downwards in the radial direction R. It can therefore also be referred to as Heilleitglocke 5.
- the sheath 51 for the wire connections 61 is preferably formed as a protuberance from the Heilstromleitglied 5.
- FIG. 2 shows this in a view obliquely from below onto the arrangement 1, specifically in a partial sectional view with a view of the wire connections 61 and the covering 51.
- FIG. 4 shows an enlarged illustration of the region II of FIG. 2.
- FIG 3 shows a partially sectioned side view of the arrangement 1.
- the arrangement 1 is mounted on a printed circuit board 2 by means of snap-in connections.
- the support frame 4 with the molded thereon shipsstromleitglied 5 is shown in Fig. 5 in a view obliquely from above, wherein the fan 3, the board 6, the wire connections 61 and the sealing ring 7 are not shown.
- Fig. 6 shows a view of the support frame 4 from below, so from the PCB side. In the middle you can see three holes 52, which serve to attach the motor 33.
- the arrangement 1 is preferably operated such that cold air is drawn in from the outside and supplied to the components to be cooled.
- the fan 3 can also be operated in the opposite direction, so that it sucks heated air from the circuit board 2 and blows outward.
- 7 shows an exploded view of an arrangement 1 according to the invention.
- the circuit board 2 is shown, which has recesses 23 for the ends 44 of the support members 41 a and recesses 22 for the latching hooks 43.
- the components on the circuit board are not shown in Fig. 7.
- the support frame 4 is shown, as well as this associated sealing ring 7 and the board 6.
- the latter is electrically connected via its arm 64 with approximately vertically extending connecting leads 61.
- the fan 3 with its fan blades 32. It is attached to the support member (flange) 45 of the support frame 4, preferably by a mechanical connection with the central projection 48 of the support member 45, which projection in the mounted state, a central recess 63 of the board 6 penetrates and thereby centered.
- FIG. 8 shows a preferred alternative to FIG. 3.
- a latching foot 80 is provided with a cylindrical inner recess 81 extending in the longitudinal direction of this latching foot and with a round double spring 82.
- This has two resilient legs 64, 66 and tapers at the lower end to a cone 68, which facilitates insertion into a round hole 70 of the circuit board 2.
- the legs 64, 66 are formed by a longitudinal section 72 in the lower end of the latching foot 80. This has on its outer side an annular groove 74 which fits into the recess 70 and can be locked by pressing it into this form-fitting manner with her.
- Fig. 8 shows this latched position.
- such a spring-locking foot 80 allows mounting by snapping in a well-defined position, so that the support members 41 a can be omitted.
- FIGS. 9 to 23 show different variants of the air guide member 5 of FIGS. 1 to 8. If electronic components 21 are located under this air guide member, it may also be necessary to cool these components by a part of the cooling air flow.
- 9 to 23 each show an air guide member 5, the position of which is evident on the support frame 4 from FIGS. 1 to 8 and which is connected to the ring 40 of the support frame 4 by preferably three webs 45 a (FIG. 5). These webs 45a are not shown for simplicity in Figs. 9-23.
- the air guide members 5 are, as in FIGS. 1 to 8, arranged on the support member (flange) 45 and are preferably integral therewith. At the top of the support member 45 are the inner raised edge 48 and the outer raised edge 49.
- the outer edge 49 usually has an interruption 49a as shown in FIG. In Fig. 9 to 23, this interruption is not shown, but can be provided there in the same manner.
- the outside of the air guide member 5 generally has an upper portion 53 which is substantially parallel to the axis of rotation A of the fan 3.
- the section 53 merges via a middle section 54 into a lower section 55, which runs rather perpendicular to the axis of rotation A.
- the air guide member 5 has a series of equidistant holes 60 having a circular cross section, which lie approximately at the transition from the region 53 to the region 54. To these offset at the area 55 an equal number of holes 62 is provided, also with a circular cross-section.
- FIG. 10 is largely consistent with FIG. 9, but only the holes 60 are provided and not the holes 62.
- twelve elongated recesses 64 are provided in the transition region 54, which extend in the circumferential direction, as shown.
- twelve elongated recesses 66 are provided which also extend in the circumferential direction and are offset relative to the recesses 64 in the manner shown.
- elongated recesses 68 are provided in the transition region 54, which extend in the direction from top to bottom, and between these lie in the region 55 twelve elongated recesses 70, which also extend from top to bottom.
- Fig. 18 shows an air guide member 5, wherein in the transition region 54 twelve recesses 72 are incorporated with a rectangular cross-section. Similarly, in the area 55 twelve recesses 74 are incorporated with rectangular cross-section, and these are offset from the recesses 72.
- Fig. 21 twelve recesses 76 are provided with rectangular cross-section in the transition region 54 of the Lucasleitglieds 5, and in the region 55 twelve recesses 78, also with a rectangular cross-section.
- Fig. 22 only the recesses 76 are provided, and in Fig.23 only the recesses 78.
- the operation is virtually the same as in the variants of FIGS. 15, 16 and 17, d. H. From the variant according to FIG. 21 to the variant according to FIG. 23, the cooling effect for components 21 below the air-conducting member 5 decreases.
- Fig. 24 shows another embodiment of an arrangement 101 according to the invention. As in the previous embodiments, the same reference numerals are used for the same or like parts, and these parts will not be described again.
- the assembly 101 is mounted in use on a printed circuit board 2, which is indicated in Fig. 24, and it is preferably used to cool a - not shown in Fig. 24 - heat-sensitive component, directly under the assembly 101 is mounted on the circuit board 2.
- Fig. 1 shows such components 21st
- the assembly 101 has a support frame 104, which, as in the previous embodiments, is formed approximately in the manner of a drilling rig. It has four support legs, namely two guide legs 105, 106 and two latching legs 107, 108. The latter are designed as the spring latching foot 80 of FIG. 8. Reference is therefore made to the description there in order to avoid lengths.
- All support legs 105 to 108 have a support surface 105 a, 106 a, 107 a, 108 a, with which they are supported after assembly on the upper side of the printed circuit board 2.
- 105 has a guide pin 1 10 with the length d1, and also has the guide leg
- the latching legs 107, 108 have a length d2 which is smaller than d1.
- a bore 1 12 serves to receive the guide pin 1 10
- a bore 1 13 serves to receive the latching leg 107 in the manner described in detail in FIG. 8 for the latching leg 80.
- detent leg 108 (not shown) bore is provided, whose dimensions correspond to those of the bore 1 13, and for the guide leg 106 a (not shown) bore is provided whose diameter is smaller than the diameter of the bore 1 12th
- a connector 1 14 is mounted, which is used for electrical connection of the circuit board 2 with three metal pins 41, via which the motor 33 of the fan 3 and its connection board 6 electrically with corresponding conductor tracks the circuit board 2 is connected.
- the four support legs 105 to 108 are hollow as shown and go in its upper part in a substantially annular or tubular part 1 15, which merges into a flat edge 1 17 above, which is perpendicular to the axis of rotation A and on his radially inner side is bounded by an upwardly projecting edge 1 19.
- a sealing ring 120 can be arranged on the edge 1 17 and serves to seal against a housing wall or the like.
- On its inner side 121 of the edge 1 19 is frusto-conical.
- the truncated cone 121 merges into a cylindrical section 123, within which the blades 32 of the fan 3 rotate during operation.
- a support member 127 is secured by webs 125, and between this and the cylindrical portion 123 is an annular air passage opening 130, from which a cooling air flow exits downwards in operation, symbolically indicated in Fig. 25 at 132 is. (If necessary, the cooling air flow can also run in the opposite direction.)
- a groove-like recess 134 located in the annular part 1 15, the flat edge 1 17 and the edge 1 19 a groove-like recess 134 whose width b is adapted to the width of the arm 64 (Fig. 7) of the board 6.
- This arm 64 expands at its free end to a hammer-like widening 64b, which is shown in section in FIG. 25 and whose width B is greater than the width b of the groove 134.
- This widening 64b is in a recess complementary to it 136 a box-like extension 138 of the support frame 104 and is held there after assembly by two detent springs 140, 142 in the manner shown in FIG.
- the motor 33 is permanently connected after its assembly with the part 127, which has approximately the shape of a saucer to absorb grease that could leak during operation from the bearings of the motor 33, and to avoid contamination of the printed circuit board 2.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP11009570.0A EP2436933B1 (de) | 2004-10-19 | 2005-10-04 | Tragegestell für einen Axiallüfter |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE202004019747 | 2004-10-19 | ||
DE202005015079 | 2005-09-19 | ||
PCT/EP2005/010652 WO2006042635A1 (de) | 2004-10-19 | 2005-10-04 | Anordnung für die kühlung einer leiterplatte oder dergleichen |
Related Child Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP11009570.0A Division-Into EP2436933B1 (de) | 2004-10-19 | 2005-10-04 | Tragegestell für einen Axiallüfter |
EP11009570.0A Division EP2436933B1 (de) | 2004-10-19 | 2005-10-04 | Tragegestell für einen Axiallüfter |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1702165A1 true EP1702165A1 (de) | 2006-09-20 |
EP1702165B1 EP1702165B1 (de) | 2015-12-30 |
Family
ID=35482279
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP05791377.4A Not-in-force EP1702165B1 (de) | 2004-10-19 | 2005-10-04 | Anordnung für die kühlung einer leiterplatte oder dergleichen |
EP11009570.0A Active EP2436933B1 (de) | 2004-10-19 | 2005-10-04 | Tragegestell für einen Axiallüfter |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP11009570.0A Active EP2436933B1 (de) | 2004-10-19 | 2005-10-04 | Tragegestell für einen Axiallüfter |
Country Status (3)
Country | Link |
---|---|
US (1) | US7390172B2 (de) |
EP (2) | EP1702165B1 (de) |
WO (1) | WO2006042635A1 (de) |
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US6130820A (en) * | 1999-05-04 | 2000-10-10 | Intel Corporation | Memory card cooling device |
US6174232B1 (en) * | 1999-09-07 | 2001-01-16 | International Business Machines Corporation | Helically conforming axial fan check valve |
JP3637047B2 (ja) | 2001-03-03 | 2005-04-06 | ジャルマン テック コーポレーション,リミテッド | ヒートシンク及びこれを用いたヒートシンク装置 |
US6498724B1 (en) * | 2001-07-27 | 2002-12-24 | Sen Long Chien | Heat dissipation device for a computer |
US6726455B2 (en) * | 2002-09-27 | 2004-04-27 | Sunonwealth Electric Machine Industry Co., Ltd. | Fan having a heat sensor device |
TW582582U (en) * | 2002-11-22 | 2004-04-01 | Hon Hai Prec Ind Co Ltd | Ventilation device for computer system |
-
2005
- 2005-10-04 WO PCT/EP2005/010652 patent/WO2006042635A1/de active Application Filing
- 2005-10-04 EP EP05791377.4A patent/EP1702165B1/de not_active Not-in-force
- 2005-10-04 US US10/574,988 patent/US7390172B2/en not_active Expired - Fee Related
- 2005-10-04 EP EP11009570.0A patent/EP2436933B1/de active Active
Non-Patent Citations (1)
Title |
---|
See references of WO2006042635A1 * |
Also Published As
Publication number | Publication date |
---|---|
EP1702165B1 (de) | 2015-12-30 |
EP2436933A8 (de) | 2012-05-16 |
EP2436933A2 (de) | 2012-04-04 |
EP2436933B1 (de) | 2020-06-03 |
US20060228237A1 (en) | 2006-10-12 |
EP2436933A3 (de) | 2018-01-24 |
US7390172B2 (en) | 2008-06-24 |
WO2006042635A1 (de) | 2006-04-27 |
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