SUM OF HEAT AND COOLING UNIT USING THE SAME
Field of the Invention The present invention relates to a heat sink for cooling a heating element formed of electronic components or their like, in particular, a heat sink having a shaped structure using forced convection for cooling. invention is also related to a cooling unit to which the heat sink is connected
BACKGROUND OF THE INVENTION JP-A-2002-170915 (referred to herein as a prior art, hereinafter), discloses a conventional heat sink type. The conventional heat sink comprises a heat transfer vessel provided within a conventional heat sink. channel and a heat transfer accelerator (such as a fin or a turbulent flow accelerator) in the channel In the heat transfer vessel, an inlet side space for a cooling fluid and an outlet side space is formed for the cooling fluid By causing the cooling fluid to flow from the input side space to the outlet side space causes the base plate to be cooled, and therefore the electronic components mounted on the base plate are also cooled The lateral space of entrance for the cooling fluid and the lateral space of exit for the fluid of
Cooling are provided separately at the ends of both sides of the heat transfer receiver, as shown in Figure 3 of the prior art or are formed at the same end on one side of the heat transfer vessel so as to be separated from each other. Yes, as shown in Fig. 2 of the prior art
Patent Reference 1 J P-A-2002-1 7091 5
Brief Description of the Invention In a conventional heat sink, where the lateral inlet space for the cooling fluid and the lateral outlet space for the cooling flow are provided separately on both sides of the The heat transfer vessel is provided with an inlet of the cooling fluid in the inlet side space for the cooling fluid and an outlet of the cooling fluid in the outlet side space for the cooling fluid, so as to be This requires spaces to lay the pipes for the cooling fluid inlet and for the cooling fluid outlet, respectively, and also requires space to detach the pipes during maintenance. This causes a problem when it goes to increase the volume of the general cooling system Also, in the previous case, it is difficult that some cooling systems com n components, since the length of the pipes is not the same when they are connected in series a heat sink and a
pump or a fan, when laying the pipes to form the cooling system In addition, the long pipes, due to the previous reason, increase the loss of pressure that occurs in the cooling system. This causes a problem, since the flow rate Circulating cooling fluid and a heat characteristic deteriorate It may be possible to provide a head for distribution in the inlet side space for the cooling fluid and a head for confluence in the outlet side space for the cooling fluid The head for the distribution and the head for the confluence, however, function to control the flow deviation in the channel of the heat transfer vessel and the cross sections in flow in the respective heads are usually larger in area than the head. cross section of the heat transfer vessel channel In accordance with this, the heads are formed, respectively, at both ends of the heat transfer vessel in the case where a heat sink in which the heads are formed at both ends of the heat transfer vessel, so that the problems caused, so that a small access surface is close to the heating element mounted in the heat transfer vessel and that there is unnecessary space in the rear part of a part for mounting the heating element. , in case of separately providing the inlet side part and the outlet side part for the cooling fluid on one side of the heat transfer vessel, the channel in the vessel
Heat transfer is a long channel in series In accordance with this, the cooling fluid receives heat from the heating element as it passes through the channel in the heat transfer vessel, to raise the temperature, so that the cooling fluid in the flow outlet part is higher in temperature than the cooling fluid in the inlet flow part. This causes a problem, since the difference in temperature is increased by a surface for mounting the heating element. forming several channels in the heat transfer vessel to form a parallel channel for the purpose of solving the above problems, there is also the problem that the volume of the heat sink is increased, since the respective channels are interlaced or multiple U-Turn Parts The invention also solves the aforementioned problems One object of the invention is to provide a volume of the heat sink to form a more compact cooling system Another object of the invention is to provide a heat sink superior in heat uniformity In addition, another object of the invention is to provide a cooling unit, which is compact and superior in uniformity of heat. heat A heat sink according to the invention is a heat sink comprising a header for the distribution connected with a cooling fluid inlet, a head for the confluence connected with an outlet of the cooling fluid and provided in parallel and adjacent to the head for distribution, and a container for
heat transfer that includes a mounting surface of the heating element, as well as at least one or more internal channels, the channel is connected to the head for distribution and to the head for the confl uence In addition, a unit of Cooling according to the invention is a cooling unit comprising several heat sinks respectively, which include a head for distribution, a head for the confl uence provided in parallel and adjacent to the head for distribution and a heat transfer vessel that includes a mounting surface of the heating element, as well as at least one or more inner channels, the channel is connected to the head for distribution and to the head for the confluence, a connection opening for connecting the respective heads for distributing the heat sinks, a connection opening for connecting the respective heads For the confluence of the heat sinks, a cooling fluid inlet connected to the head for the distribution of any of the heat sinks, and a cooling fl uid outlet connected to the head for the confluence of any heat sink. of the heat sinks, the cooling unit where the channels in the respective heat transfer receivers of the heat sinks communicate with each other. In the heat sink according to the invention, the head for the distribution is provided adjacent and in parallel to a head for the confl uence This allows the cooling system to be more compact and its heat meter to be superior in uniformity of heat
In addition, the layering of several heat sinks where a head for the distribution and a head for the confluence are provided in parallel and adjacent to each other, allows to provide a cooling unit that is compact and superior in uniformity of heat. 1 shows a simplified structure of a heat sink according to the embodiment 1 of the invention. Figure 1 (c) is a top view of a heat sink. Figure 1 (a) is a sectional view taken along the length of line AA of Figure 1 (c) Figure 1 (b) is a sectional view taken along line BB in Figure 1 (c) Figure 2 illustrates another structure of the heat sink in accordance with embodiment 1 of the invention Figure 2 (c) is a top view of the heat sink Figure 2 (a) is a sectional view taken along line AA of the heat sink of Figure 2 (c) Figure 2 (b) is a sectional view taken throughout of line B-B of Figure 2 (c)
Detailed Description of the Invention In Figures 1 and 2, a heat sink 100 forms a cooling system for cooling a heating element 8 mounted thereon. The heat sink 100 comprises a cooling fluid inlet. which enters a low cooling fluid 9
temperature, a head 2 for the distribution for dividing the introduced cooling fluid 9, a heat transfer vessel 4 thermally connected to the heating element 8, which is provided on a mounting surface of the heating element, and provided therein with a channel 3, a head for the confluence 5 within which flows the highest temperature cooling fluid 9, due to the absorption of heat from the heating element 8, and an outlet 6 of the fluid of cooling, from which the confluent cooling fluid 9 is discharged The heat sink 1 00 thus, forms in series or in fl ow channels The head for distribution 2 and the head for confluence 5 in mode 1 they are provided in parallel and adjacent at a lateral end, namely, the left lateral end of the heat sink 100. The head for the distribution 2 and the head for the confluence 5 are provided in order to It is placed vertically in a thickness direction of the heat transfer vessel 4 and is stacked adjacent to each other in the direction of the thickness of the heat transfer receiver 4 in the structure of Figure 1. the same side of the heat transfer surface of the heat transfer vessel 4, that is, a mounting surface of the heating element to be adjacent to each other in a direction traversing at right angles to the direction of the thickness of the receiver 4 heat transfer in the structure of Figure 2 In the structure of Figure 2, the heat sink 1 00 is thinner in thickness, and therefore, it is more compact than the heat sink 1 00 that has the structure of Figure 1 Channel 3 comprises two channels 3A and
3B provided in parallel with each other. Each of the channels 3A and 3B are arranged to have a continuous channel 3a and a return channel 3b, which are connected by means of a U-shaped channel 3c. The channel 3a continues and the return channel 3b is stacked vertically through a medium plate 1 0, which forms a division to form a double layer structure The head for the distribution 2 is connected to the continuous channels 3a of the respective channels 3A and 3B , while the head for the confluence 5 is connected to the return channels 3b of the respective channels 3A and 3B The cooling fluid inlet 1 is provided at one end of the head for distribution 2 Cooling is provided at one end of the head for confl uence 5 The heating element 8, which is subjected to cooling, is mounted in contact with the heat transfer vessel 4 to be thermally connected thereto. Connecting a pump or fan with your heating meter 1 00 that has the structure through a hose to 1 01 allows the cooling system, where the cooling fluid 9 flows into the heat sink 1 00 waste the heat generated from the heating element 8 around the heating element 8, namely an open-air cooling system is formed. Furthermore, with the use of the cable to 1 01 to connect the heat sink 1 00 with A radiator to also form a distribution circuit for circulation allows forming a circulation-type cooling system. A reservoir and a filter can be provided at a mid-point of the distribution circuit. In this case, the fluid 9 of
cooling circulates in the distribution circuit to bring the heat generated from the heating element 8 to the radiator from which the heat is wasted, various heat sinks 100 having the structure shown in mode 1 can be connected in series or in parallel through line 101 to form a series type cooling unit or a parallel type cooling unit In mode 1, channel 3 comprises two channels 3A and 3B as shown in Figures 1 (c) and 2 (c), channels 3A and 3B, respectively include continuous channel 3a, channel 3c U-shaand channel 3b return and connect with the head for the distribution 2 and with the head for the confluence 5 in parallel with each other However, the invention is not limited to the above Channel 3 can be a single channel or formed of three or more connected channels in parallel In addition, a flow direction of the cooling fluid is not particularly limited. A location or function ratio can be exchanged between the input 1 of the cooling fluid and the output 6 of the cooling fluid, the head for the cooling fluid. ibution 2 and the head for the confluence 5 or the continuous channel 3a and the return channel 3b of the channel 3 Furthermore, as shown in Figures 1 (c) and 2 (c), the heating element 8 also includes two elements 8A and 8B of heating, which are mounted in the heat transfer vessel 4 at locations corresponding to the channels 3A and 3B, respectively, to be cooled by means of the cooling fluid flowing in the respective channels 3A and 3B. However, The invention is not limited to the foregoing. it can arrange for a heating element 8 to be provided correspondingly to two or more channels 3 to be cooled by means of the cooling fluid flowing in the respective channels. In addition, the heat sink 1 00 of the mode 1 is formed of the
5 heat transfer vessel 4, the head for the distribution 2 and the head for the confluence 6, which are formed in a body It may be possible, however, that the head for the distribution 2, the head for the confluence 5 and the heat transfer vessel 4 are assembled into a body after they are individually formed. The heat transfer vessel 4 can be divided into a top plate, a middle plate and a plate I nferior to being formed The heat transfer container 4 can also be formed into a structure of stacked layers formed of a stainless steel coating material. A method for manufacturing a heat sink, a method for
I5 to fabricate the respective divided elements, and a method for assembling the respective elements, namely, a method for fixing and a sealing method are not specifically limited. Now an operation of the heat sink 1 00 of the modality will be described. 1 In Figure 1, the cooling fluid 9 is introduced from
20 the cooling fluid inlet 1 to the head for distribution 2, a cooling medium, for example, is divided into two channels 3A and 3B in the heat transfer vessel 4 the cooling fluid 9 which has The heat transfer vessel 4 passes through the continuous channels 3a (lower channels) into the respective channels 3A and
2 ^ 3B, form a U-turn through channel 3c of U-turn provided in
the right end of the heat sink 1 00, passes through the return channels 3b (upper channels), flows into the head for the confluence 5 for confluence and flows towards the outlet 6 of the cooling fluid At the same time , a wall of the return channel 3b of the heat transfer vessel 4 makes direct contact with the cooling elements 8A and 8B, namely, the side wall where the cooling elements 8A and 8B are provided receives the heat to raise This causes a difference in temperature between the cooling fluid 9 in the return channel 3b and the wall of the return channel 3b, so that the heat is transferred from the wall of the return channel 3b to the cooling fluid 9. As a result, the cooling fluid 9 rises in temperature as it is discharged from the cooling flow outlet 6 On the other hand, the cooling fluid 9 in the return channel 3b becomes higher in temperature. The cooling fluid 9 in the continuous channel 3a (in the lower channel) due to the rise in temperature of the cooling fluid 9 in the return channel 3b causes the heat to be transferred from the cooling fluid 9. in the channel 3b returning to the cooling fluid 9 in the continuous channel 3a through the middle plate 1 0, which is a division between the continuous channel 3a and the return channel 3b. As a result, the fluid 9 of cooling in the continuous channel 3a receives the heat to raise the temperature, while the cooling fluid 9 in the return channel 3b is cooled. This causes the elevation in the temperature of the cooling fluid 9 to be lowered in the return channel 3b and thus reduce the temperature deviation in the mounting surfaces of the
heating elements 8A and 8B, so that the uniformity of heat is improved As described above, the cooling fluid 9 passing through an inlet 1 of the cooling fluid, the head for the distribution 2, the channels 3A and 3B in the heat transfer vessel 4, the head for the confluence 6 and the outlet 6 of the cooling fluid in order, rises in temperature to a high degree when passing through channels 3A and 3B and discharges continuously with its high temperature. In general, the cooling fluid in the downstream channel has a higher temperature than the cooling fluid. in the upstream channel, when the cooling fluid flowing in a channel receives heat from the channel wall of the heat transfer vessel, especially on the side provided with the heating element to raise the temperature to a high temperature. In accordance with this, the temperature of a mounting surface of the heating element located on the downstream side of the channel is higher than that of the mounting surface of the heating element located on the upstream side of the channel, for that the deviation in temperature on a mounting surface of the heating element is high This causes the problem that the temperature deviation causes ersión in the electrical characteristic, which disables the desired function to be reached, in the case of using electronic as the heating element, for example The deviation in temperature also causes the deviation in the electrical resistance, so that the problem as the deviation in the calorific value (local heating,
stitching point) and thermal displacement However, in mode 1, a range of a change in the temperature of the cooling fluid 9 within the continuous channel 3a and the return channel 3b is very narrow, since the channels 3A and 3B they have a double-layered, bent structure and the heat exchange is carried out between the cooling fluid 9 flowing in the continuous channel 3a and the cooling fluid 9 flowing in the return channel 3b through the plate 10 In accordance with this, the temperature deviation in a mounting surface of the heating element 8 becomes small, the uniformity of the heat is improved so that the aforementioned problem can be avoided Also, in a conventional heat sink, the inlet of the cooling fluid and the output of the cooling fluid, which are provided separately, require large spaces for laying the pipes when placing the heat sink in the cooling system, as described above In the case of providing a connector for the detachment in the middle of a pipe, in order to carry out the detachment for maintenance, space to carry out the detachment must be ensured, respectively, so that the capacity of the cooling system is large Like a conventional heat sink and used with a heat sink that has a continuous winding channel In this case, it is possible to provide a cooling fluid inlet and an adjacent cooling fluid outlet However, this causes a problem, that the loss of pressure becomes very high, in case of a long channel due to the large size of the
heat sink, the circulating flow rate of the cooling fluid is reduced and therefore the heat characteristic is deteriorated. There is also a problem because the rise in temperature of the cooling fluid causes a greater deviation in temperature in a mounting surface of the heating element, as described above In addition, in case of increasing the width of the cooling part of the channel or by providing the channels in parallel for the purpose of reducing the pressure loss, the cooling fluid flow It is easily deflected in the channel and the deviation in temperature on a mounting surface of the heating element is large This also represents a problem However, in mode 1, the head for the distribution 2 and the head for the confluence 5, which they are provided in parallel on one side of the heat sink 100, so that the cooling fluid inlet 1 and the fluid outlet 6 can be provided very close According to this, the spaces required for the input 1 of the cooling fluid and for the outlet 6 of the cooling fluid, respectively, can be shared, so that the cooling system can be more compact Further, in the embodiment 1, by providing the head for the distribution 2 and the head for the confluence 5 in parallel on one side of the heat sink 100 allows an access surface for the heating elements 8, 8A and 8B mounted on the Heat sink 100 is large, so that flexible wiring is possible In addition, as shown in Figures 1 (c) and 2 (c), input 1 of the
Cooling fluid and outlet 6 of the cooling fluid can be provided in the vicinity of a side surface of the heat sink 1 00, so that the wiring that passes over the head for the distribution 2 and on the head for cooling the confluence 5, can easily be realized In Figures 1 and 2 an almost vertical direction to the extended lines of the continuous channels 3a and the return channels 3b of the channels 3A and 3B is defined as a longitudinal direction of the head for the distribution 2 and the head for the confluence 5 The cooling fluid 9 is sent to the cooling fluid inlet 1 in the longitudinal direction of the head for distribution 2 The flow of cooling is discharged from the outlet 6 of the cooling fluid in the longitudinal direction of the head for the confluence., the head for the distribution 2 is connected in its longitudinal direction with the respective continuous channels 3a of the channels 3A and 3B In accordance with this, the cooling fluid sent in the long direction of the head for the distribution 2 allows the The third channels of the respective channels 3A and 3B will be supplied with almost the same cooling fluid when the cooling fluid is sent from a location in a direction crossing at right angles to the longitudinal direction of the head for cooling. distribution 2, the cooling fluid is concentrated in the continuous channel 3a closer to the place from which the cooling fluid is sent, while the other continuous channel 3a can not be supplied with sufficient cooling fluid. can be easily provided in
parallel and independent of each other in mode 1, so that pressure loss can be reduced, and thus it is difficult to generate a one-sided shift in channels E n Figures 1 and 2, the heating elements 8A and 8B in the form of a block The structure and size of the heating elements 8A and 8B, however, are not specifically limited, provided that the heat elements apply heat to the heat sink 1 00, such as a heat generating source for a heating component, an electronic component and the electronics, a heat generating source formed by integrating the above, a heat irradiation part of an apparatus for transferring heat from the heat generating sources and the heat exchanger i include the heat sink according to the invention, for example The heating elements 8A and 8B are fixed with the heat transfer receiver 4 by soldering. welding, or pressure welding or thermally connected through a contact heat resistance reducing agent (including a foil) as thermal grease The structure of the heating elements is not specifically imitated, as long as the elements 8A and 8B of heating can be thermally connected with the cooling fluid 9 The heating elements 8 can be provided in a heat sink 1 00 in singular or plural number In addition, the heating elements 8 can be provided in any of the upper surface, the lower surface and both surfaces of the heat sink
1 00 In the event that the heating elements 8 are provided on both surfaces of the heat sink 1 00, the heat sink can be fixed so that the heating elements 8 support the heat sink between the interior of the interior. 4 heat transfer pin 3, channels 3A and 3B are formed, as described above. Channels 3A and 3B function as a container for the cooling fluid 9 and as the passage through which the fluid 9 flows. Cooling Channels 3A and 3B also function to thermally connect the heating elements 8A and 8B with a cooling fluid 9, as well as to distribute and uniform the heat transferred from the heating elements 8A and 8B. Accordingly, the accelerators 1 1 heat transfer can be provided in the channels 3A and 3B in order to accelerate the heat transfer from the wall surfaces of the channels 3A and 3B to the cooling fluid 9 Because the heat transfer accelerator 1 1 considered may be an insertion, such as a fin which has the effect of enlarging the surface area of the heat transfer and the effect of improving the heat transfer, due to an acceleration turbulent, for example, a projection essentially in the form of a plate or column, the projection provided in a channel wall and a turbulent heat have an effect of improving heat transfer due to slow turbulent acceleration, for example, provide various projection forms on a channel wall facing the mounting surface of the element of
heating, a lath, a coil, an internal fin, shown in Fig. 3, various projection shapes shown in Fig. 4, and a substrate having a plurality of openings, for example a heat transfer accelerator divided into multiple numbers may be provided adjacently or multiple heat transfer accelerators may be provided in any space to provide the heat transfer accelerator 1 1 in the channel. In addition, a rectification reinforcement may be provided in a space between the accelerators of heat transfer mainly for the purpose of reinforcing the channels 3A and 3B The rectification reinforcement is to reinforce the upper and lower wall surfaces forming the channels 3A and 3B by means of a spring structureA beam structure or similar structure A rectification reinforcement structure is not specifically limited, as long as the flow channels are secured, which prevents a change in the shape of the upper and lower wall surfaces of the channels 3A and 3B The rectification reinforcement has the function of mixing and rectifying the cooling fluid 9, in some cases The middle plate 1 0 has the function of exchanging heat between the cooling fluid 9 in the continuous channel 3a and the fluid 9 Cooling in the return channel 3b A heat transfer accelerator having a structure similar to that of the heat transfer accelerator 1 1 may be provided on the surface of the plate 1 0 medium E l ca n to the return in U 3c that connects the can to the 3a conti n uo and the
return channel 3b may have the shape of an elbow or bend. The shape and structure of the U-turn channel 3c is not specifically limited, as long as the U-turn channel 3c can function as a passage connecting the continuous channel 3a and the return channel 3b. The heat transfer container 4 can also be used to fix the heating element 8 and the components that accompany it therein. In addition, it may be possible to provide a fixing accessory for a through hole or a screw hole for coupling with peripheral apparatuses such as the cooling system, for example. The heat sink 100 shown in Figure 1 has a structure that the heating elements 8A and 8B are in contact with a wall of the heat transfer vessel 4, namely an indirect cooling structure. However, the heat sink 100 may have a structure that the heating elements 8A and 8B fit into an opening 15 provided in the heat transfer vessel 4, namely, the direct cooling structure, as shown in FIG. Figure 2. This causes the lower surfaces of the heating elements 8A and 8B to be in direct contact with the cooling fluid 9, and therefore, the heat is transferred directly from the heating elements 8A and 8B to the cooling fluid 9 . This allows to eliminate the contact heat resistance generated between the heating elements 8A and 8B and the wall of the heat transfer vessel 4 in indirect cooling and thus, the heat characteristic is improved. The opening 15 can also be provided in the
heat sink 100 in a singular or plural number, similarly to the heating element 8 The opening 15 can be provided in any of the upper surface, the lower surface and in both surfaces Also, the projections or convex to be placed can be provided in a circular or intermittent manner on the surface of the heat transfer vessel around the opening 15 in order to facilitate the positioning of the heating elements 8A and 8B The heat transfer vessel 4 and the heating elements 8A and 8B in the direct cooling structure can be fixed by means of an accessory such as a bolt or a nut or a spring structure using a leaf spring or the like thereof A method for sealing the heat transfer container 4 and the elements 8A and 8B of heating, it can be by welding or gluing It is also possible to use a packing or tonca to form a removable structure The sealing structure is not specifically limited, provided that the cooling fluid 9 can be prevented from running off and that the heating elements 8A and 8B can be connected thermally with the cooling fluid 9 directly. The head for the distribution 2 it functions to divide the cooling fluid 9 sent from the cooling fluid inlet 1 and carries the same to the channels 3A and 3B The head for the distribution 2 also works to prevent a displacement of one side in a single channel or a displacement in only one side in the multiple parallel channels 3A and 3B The head for the confluence 5 functions to carry the cooling fluid 9 flowing from the channels 8A and 8B to the outlet 6 of the fluid
Cooling The head for the confluence 5 also works to prevent a one-sided displacement in a single channel or a one-sided displacement in m multiple parallel channels 8A and 8B, similar to the head for the distribution 2 In the head for the distribution 2, and the head for the confl uence
6, a grinding structure can be provided to prevent a displacement of one side in the channels 3A and 3B, such as a plate provided with multiple holes, a plate provided with multiple grooves., a network-shaped plate, a projection provided on a wall of the head or a combination of the above multiple components, for example Especially a curved projection (a guide vane) or a fold channel can be provided on a wall of the head for the confluence 5 in order to change the flow direction of the cooling fluid 9 flowing from the channels 8A and 8B towards the downstream side direction of the head for the confluence 5, that is, a direction essentially towards the outlet 6 of the cooling fluid In the heat sink 1 00 shown in Figure 1, the head for the distribution 2 and the head for the confluence 5, which are provided in parallel, are provided symmetrically with respect to the plate 1 0 half and the respective heads 2 and 5 have the same cross section The cross sections of the respective heads 2 and 5 are not necessarily the same The oblong feature The above can be the difference and any of the cross sections can be larger. The shape of the cross section is not specifically indicated. It can be considered a circle, an image or
a rectangle Further, in the heat sink 100 of Figure 2, the head for the distribution 2 and the head for the confluence 5, which are provided in parallel, are provided on the same surface side with respect to the middle plate 10 In this case, the cross sections of the respective heads can have any shape The height of an external structure of the head part formed from the head for the distribution 2 and from the head for the confluence 5, however, preferably, fixed as shown in Figure 2 This allows to easily adjust a wiring plate or its like with the heating elements 8A and 8B The input 1 of the cooling fluid plays the role of sending the cooling fluid 9 of a low temperature On the other In part, the outlet 6 of the cooling fluid operates to discharge the high temperature cooling fluid 9 The inlet 1 of the cooling fluid and the outlet 6 of the cooling fluid or are connected with a pipe 101, such as a circular pipe, a rectangular pipe, a flexible pipe or a hose, for example the cooling fluid inlet 1 and the cooling fluid outlet 6, preferably, have a flat shape When the cross section of the head for the distribution 2 or of the head for the confluence 5 have a flat shape Preferably, the pipe 101 is a relatively flat pipe near a part connected to the inlet 1 of the cooling fluid and the outlet 6 of the cooling fluid, in order to connect with it In Figures 1 and 2, structures are shown to which the
pipe 1 01 with the inlet 1 of the cooling fluid and the outlet 6 of the cooling fluid or so that the inlet 1 of the cooling fluid and the outlet 6 of the cooling fluid are formed in a body with the pipe 1 01 The invention is not specifically limited to this structure It can be considered a structure of a pipe with a fixed nipple or a structure with an O-ring or a gasket is used to connect the pipe 1 01 or the heat sink 1 00 similarly , the inlet 1 of the cooling fluid and the outlet 6 of the cooling fluid are provided adjacent on a top surface in a left corner in Figures 1 and 2 The invention is not limited to this structure The location for provide the inlet 1 of the cooling fluid and the outlet 6 of the cooling fluid can be selected in the wall surfaces of the head for distribution 2 and the head for the confluence 5, which are pro viewed adjacent to properly to form the cooling system A material to form the heat sink 1 00 preferably is a material having a high thermal conductivity Preferably, the heat sink 1 00 is formed of a material superior in the characteristic of heat transfer, ie metal, such as aluminum and copper or a composite material that introduces the former as the primary material, for example, especially the mounting surfaces of the elements 8A and 8B of heating of the heat transfer vessel 4, the walls of the channels 3A and 3B and the average plate 1 0 is preferably formed of a material superior in the heat transfer characteristic. On the other hand, a part other than the previous can be
molding with a ream material in view of the ease of molding and the low cost, although the part can also be formed of a metal material if my lar to the previously described In the case that a part of the recipient 4 heat transfer is molded with a ream material, for example, a metal plate, such as a steel plate, can be provided on at least a part of the surface This allows deformation due to the change in the resin material in accordance with the passage of time, which must be kept low In particular, when fixing the heat transfer container 4 when holding it between the heating elements or accessory 8A and 8B for fixing the heating elements 8A and 8B and the metal plate allows the effect of amplifying a part. The metal plate can be bare in the channels 3A and 3B, so that the metal plate is in contact with the cooling fluid 9 This allows to carry out easily a voltage support test, which is carried out when the electronics or their like are provided as the heating elements 3A and 3B The metal plate only has to be provided in the heat transfer vessel 4 The size and method of fixing the metal plate are not specifically limited The metal plate can be fixed by means of a fixing accessory, such as a bolt or by vacuum evaporation, deposition and gluing. Furthermore, the cooling fluid 9 can be arranged to prevent its leakage of a bare part of the metal plate in channels 3A and 3B, when the part of the metal plate is naked According to this, the metal plate can be
fix close with a tonka seal or a packing The cooling fluid 9 is a liquid such as distilled water, anti-freeze solution, oil, liquid carbon dioxide, alcohol or ammonia or a gas such as air and nitrogen gas
Modality 2 Figure 5 shows a simplified structure of a heat sink according to the embodiment 2 of the invention Figure 5 (c) is a top view of the heat sink Figure 5 (a) is a sectional view taken at along the line
AA of Figure 5 (c) Figure 5 (b) is a sectional view taken along line BB of Figure 5 (c) Figure 6 shows another structure of the heat sink in accordance with mode 2 of the invention Figure 6 (c) is a top view of the heat sink Figure 6 (a) is a sectional view taken along line AA of Figure 6 (c) Figure 6 (b) is a sectional view taken along the line BB of Figure 6 (c) In the heat sink 100 in accordance with mode 2, the channel 3 formed in the heat transfer vessel 4 is formed from two channels 3A and 3B, as shown in Figures 5 and 6. The respective channels 3A and 3B are formed in the same plane to form a single layer channel, namely a single channel plane.
modality 1 has a double layer channel structure forming the continuous channels 3a and the return channels 3b of the respective channels 3A and 3B, in the thickness direction of the heat transfer vessel 4 and the respective channels 3A and 3B They are folded in the thickness direction. On the other hand, the respective channels 3A and 3B are formed in the same plane in the heat transfer vessel 4 in the mode 2. Each of the channels 3A and 3B is arranged to have the ca 3a continuous and the return channel 3b in the same plane and turns in the channel 3c of return in U formed in the same plane as the continuous channel 3a and the return channel 3b In addition, the head for the distribution 2 and the head for the confluence 5 are provided in parallel and adjacent to each other on the left side of the heat sink 1 00, similar to modality 1 However, in mode 2, it is provided that any of the head for the distri bución 2 and the head pair at the confluence 5 are displaced with respect to the plane of the single channel where the respective channels 3A and 3B are provided and the displaced head 2 or 5 is connected with the respective channels 8A and 8B through the connection channels. The head for the distribution 2 communicates with each of the channels 3a contiguous of the respective channels 3A and 3B, while the head for the confluence 5 communicates with each of the return channels 3b of the respective channels 3A and 3B E n a The structure of Figure 5, the head for the distribution 2 and the head for the confluence 5 are provided vertically in the direction of the thickness of the heat transfer vessel 4, so as to hold between them the plane of the single channel where the
respective channels 3A and 3B Both the head for the distribution 2 and the head for the confluence 5 are displaced with a predetermined range in the direction of thickness of the heat transfer vessel 4 with respect to the single plane of the channel where the tubes are provided. respective channels 3A and 3B The head for the distribution 2 is arranged to communicate with each of the three channels 3a of the respective channels 3A and 3B through the connection channel 1a 6a connected with a connection opening provided in the head 2 The head for the confluence 5 is arranged to communicate with each of the return channels 3b of the respective channels 3A and 3B through a connection channel 1 6b connected with a connection opening provided in the head 5 E n a structure of Figure 6, the head for the distribution 2 and the head for the confluence 5 are provided adjacent on the same side of the transfer surface heat of the heat transfer vessel 4 The head for the distribution 2 of two heads 2 and 5, the head for the distribution 2 is provided on the outer side, connects with each of the three continuous channels 3a of the respective channels 3A and 3B formed in the single channel no through the connection channel 16c The head for the confluence 5 of two heads 2 and 5, the head for the confluence 5 is provided on the inner side, namely on the side of the heat transfer vessel 4, it is displaced with a predetermined interval in the direction of thickness of the heat transfer vessel 4, with respect to the single channel plane where the respective channels 3A and 3B are provided. The head for the
Conflict 5 is arranged to communicate with each of the return channels 3b of the respective channels 3A and 3B, through the connection channel 1 6d connected with a connection opening provided in the head for the confl uence 5 This allows that the heat transfer container 4 is made of a thin and more compact thickness In addition, the two channels 3A and 3B can be provided in parallel in order without crossing, although the channels 3A and 3B are formed in the single plane of the channel In Fig. 6, an essentially vertical direction to an extended line of the continuous channels 3a and the return channels 3b of the channels 3A and 3B, is also defined as the longitudinal direction of the head for the distribution 2 and the head for the confluence 5 The cooling fluid 9 is sent from the cooling fluid inlet 1 in the longitudinal direction of the head for the distribution 2 The cooling fluid is discharged from the cooling fluid. and the cooling flow outlet 6 in the longitudinal direction of the head for the confluence 5 Especially, by sending the cooling fluid in the longitudinal direction of the head for distribution 2 allows the continuous channels of the respective channels 3A and 3B to be supplied with an equal amount of cooling fluid, since the head for the distribution 2 is connected with each of the channels 3a continuous of the channels 3A and 3B in the long direction of the head for the distribution 2 In mode 2, the cooling fluid 9 in the return channels 3b has a higher temperature than the cooling flow 9 in the continuous channels 3a in the respective channels 3A and 3B.
channels 3A and 3B which comprise the continuous channels 3a, the channels 3c of return in U and the return channels 3b, however, can be provided adjacent and in parallel in plural number, so that the diffusion of heat in the reci Heat transfer pin 4 or heating elements 4A and 8B of heat transfer container 4 operate effectively This allows the temperature deviation in the mounting surface of heating elements 8A and 8B to be small and improve the uniformity of heat The uniformity of heat is further improved when more channels 3A, 3B, 3C are provided in parallel from less to no channel The heating elements 3A and 3B are fixed with the heat transfer vessel 4 in corresponding places to the channels 3A and 3B, respectively. The plurality channels 3A and 3B are provided in order so that the continuous channel 3a of the channel 3a can be adjacent to the return channel 3b of the channel 3B in the structure. It may be possible to arrange the respective channels 3a of the adjacent channels 3A and 3B, adjacent to one another so that the channels 3A and 3B can be provided in a metric manner, as shown in Fig 6. In addition, in Fig. 6, the respective return channels 3b of the adjacent channels 3A and 3B can be provided adjacent to each other, so that the channels 3A and 3B can be provided symmetrically adjacent to each other channel arrangement 3A and 3B they do not refer to those described above. In addition, the flow direction of the cooling fluid is not specifically limited. A relation in the location or functions can be exchanged between the inlet 1 of the cooling fluid and the outlet 6 of the cooling fluid.
cooling fluid, the head for the distribution 2 and the head for the confluence 5 or the continuous channels 3a and the return channels 3b of the channels 3A and 3B In addition, the channel 3c of U-turn connecting the continuous channel 3a and the return channel 3b may have the shape of an elbow or bend The shape of the U-turn channel 3c is not specifically limited However, it is preferable to provide a guide blade such as a wing-shaped projection to control the displacement of a side and the separation flow, for example, in the U-turn channel 3c. Figure 7 shows another structure of the heat sink in accordance with mode 2. Figure 7 (c) is a top view of the heat sink. 7 (a) is a sectional view taken along line AA of Figure 7 (c) Figure 7 (b) is a sectional view taken along the line
BB of Figure 7 (c) In the heat sink 100 of Figures 5 and 6, the respective heads 2 and 5 are mounted on one side of the heat transfer vessel 4. The respective heads 2 and 5, however, are provided in the center of the heat transfer vessel 4 in the heat sink 100 of Figure 7 In the structure of Figure 7, the head for the distribution 2 and the head for the confluence 5, which are provided in parallel, are located at the center and the wing-shaped heat transfer containers 4A and 4B are provided on both sides of the head for distribution 2 and the head for the confluence 5 Two
channels 3A and 3B are formed in a single plane of the channel of the heat transfer vessel 4A In the single plane plane of the channel of the heat transfer vessel 4B, channels 3C and 3D are also formed. Each of the channels 3A, 3B, 3C and 3D includes a continuous channel 3a, a channel 3c of U-turn and a return channel 3b Such a structure allows the heat transfer containers 4A and 4B, namely the mounting surfaces of the elements 8A and 8B, 8C and 8D of heating being provided on both sides of the respective heads 2 and 5 In addition, the above structure allows the heating elements 8A and 8 B, 8C and 8D to be arranged with some slack as well as allowing access to the heating elements 8A and 8B, 8C and 8D, with the cables The heating elements 8A and 8B, 8C and 8D are fixed with the heat transfer containers 4A and 4B in places corresponding to the channels 3A and 3B, 3C and 3D, respectively, in the est The structure of Figure 7 In Figure 7, a head connection opening D for the distribution 2 is provided at the location marked "D" and a head connection opening E for the confl uence 5 is provided therein. It is marked with "E", so that the connecting openings D and E are adjacent to each other. The head for the distribution 2 is provided with two connecting openings D which are connected to the respective continuous channels 3a of the terminals. channels 3A and 3B The head for the confluence 5 is also provided with two connection openings E communicating with the respective return channels 3b of the channels 3C and 3D The return channel 3b of the channel 3a and the continuous channel 3a of the Channel 3C are linked together to
through the connecting opening F The channels 3A and 3C are connected in series between the connecting opening D of the head for the distribution 2 and the connecting opening E of the head for the confluence 5 The return channel 3b of the channel 3B and the continuous channel 3a of the 3D channel also communicate with each other through the connecting opening F Channels 3B and 3D are connected in series between the connection opening D of the head for distribution 2 and the head connection opening E for the confluence 5 In this structure, the cooling fluid 9 flows from the head for the distribution 2 into the channels 3A and 3B in the left heat transfer vessel 4A, passes through the upper part of the heads 2 and 5 and then, it flows into channels 30 and 3D in the right heat transfer vessel 4B, inside the head for the confluence. In Figure 7 it may be possible that the G ends of the channels of the vessel is 3A and 30 are connected to form a loop channel while the G ends of the channels of the channels 3B and 3D are connected to form a loop channel, although it is omitted in the drawing. In this case, the two openings D of head connection for distribution 2 are arranged to be provided in the locations marked with "D", while two H connection openings of the head for the confluence 5 are arranged to be provided in the places marked with "H" This allows that the cooling fluid 9 flows from the head for the distribution 2 within the loop to be divided into left and right one of the divided cooling fluids 9 passes through the channels 3A and 3B in the receiver 4A of left heat transfer, and it flows over
the heads 2 and 5 to be sent to the head for the confluence 5 The other cooling fluid 9 flows over the heads 2 and 5 and passes through the channels 3C and 3D in the right heat transfer vessel 4B, to be sent to the head for the confluence 5 again In accordance with this, the flow length is shortened and the fluid characteristic is improved, so that the heat characteristic including the uniformity of heat is improved In Figure 7, shown as an example, the heat transfer container 4 has the shape of a flat plate. However, the invention is not limited to this. The heat transfer container 4 can have an essentially V, U, a square or O shape (including a container of heat transfer whose ends are connected to each other) Similar shapes can be considered for the heat transfer vessel 4, see also Figures 1 to 6
Modality 3 Figure 8 shows a simplified structure of a heat sink according to the embodiment 3 of the invention Figure 8 (c) is a top view of the heat sink Figure 8 (a) is a sectional view taken at along line AA of Figure 8 (c) Figure 8 (b) is a sectional view taken along line BB of Figure 8 (c) Heat sink 100 in mode 3 is arranged to have a
mixing channel 1 8 through which the channels 3c of U-turn in the middle part of the channels 3A and 3B communicate with each other The temperature rises of the cooling fluid 9 in the respective channels 3A and 3B are different in the case that spans are provided, two for example, heating elements 8A and 8B in places corresponding to channels 3A and 3B and the respective heating elements 8A and 8B have different calorific values. The cooling flow 9 flowing in the respective channels 3A and 3B to the middle of the channels 3A and 3B allows the temperature of the cooling fluid 9 to be equal. It is said, decreases the maximum temperature of the fluid 9 of Cooling By sending the mixed cooling fluid 9 into channels 3A and 3B again it allows to improve the uniformity of heat in the heat sink 1 00, so that the heat characteristic is improved in the heat sink. 1 00 of Figure 8, there is shown an example where the U-turn channels 3c of the channels 3A and 3B in the heat sink 1 00 of Figure 6 are connected through the mixing channel 1 8 The fluid 9 cooling that has raised in temperature in the continuous channels 3a, is arranged to mix in the mixing channel 18 to be sent to the return channels 3b The head for the distribution 2 in the heat sink 1 00 in Figure 8 it is unique to each of the continuous channels 3a of the respective channels 3A and 3B through the connection channel 1 6c, while the head for the confl uence 5 communicates with each of the return channels 3b of the respective channels. channels 3A and 3B through channel 16d of
connection It is preferred to provide in the mixing channel 18, a mixing accelerator, namely an insert such as a plate provided with multiple orifices, a plate provided with multiple slits, a net, a twisted tape and a coil, a projection provided in the internal wall of the mixing channel 18 or combination of some of the above, for example The mixing accelerator can have a structure equal to that of the rectification reinforcement described in embodiment 1 Figure 9 shows another structure of the heat sink in accordance with the embodiment 3 of the invention Figure 9 (e) is a top view of the drain Figure 9 (a) is a sectional view taken along line AA of Figure 9 (e) Figure 9 (b) ) is a sectional view taken along line BB of Figure 9 (e) Figure 9 (c) is a sectional view taken along line CC of Figure 9 (e) Figure 9 (d) is a sectional view taken at the of the line D-D of Figure 9 (e) In the heat sink 100 shown in Figure 9, the respective return channels 3b of two channels 3A and 3B are adjacent to each other at the center of the heat transfer vessel 4 A projection, that is, a mixing accelerator 19 in a side wall in the mixing channel 18 for connecting the respective return channels 3b of the channels 3A and 3B are provided to form a top channel 20 and a channel 21
In the mixing channel 1 8, on the other hand, in the mixing channel 1 8 for connecting the respective continuous channels 3a of the channels 3A and 3B, the continuous channels 3a located at both ends of the heat sink 1 00, the dividing plates 22 are provided to form the divisions between the return channels 3b and the continuous channels 3a. The dividing plate 22 is arranged to be provided with an opening 23 so that each continuous channel 3a is connected with any of the channel 20. its upper and lower channel 21 This allows the cooling fluid 9 to flow in the respective continuous channels 3a of the channels 3A and 3B of the heat sink 1 00, to flow from the openings 23, provided respectively in the plates 22 of dision within the upper channels 20 or in the lower channels 21 in the mixing channel 1 8 and for mixing in the mixing channel 18 connected with the return channels 3b, so that the cooling fluid 9 The mixed flow can flow into the respective return channels 3b of the channels 3A and 3B. In the heat sink 1 00 of FIG. 9, the head for the distribution 2 communicates with each of the three channels 3a of the respective channels 3A and 3B through the connection channel 16c, while the head l for the confl uence 5 communicates with each of the return channels 3b of the respective channels 3A and 3B through the connection channel 1 6d In Figures 8 and 9, an almost vertical direction to extended lines of the continuous channels 3a and of the return channels 3b of the channels 3A and 3B is also defined as the long direction of the
head for the distribution 2 and of the head for the confluence 5 The cooling fluid 9 is sent from the inlet 1 of the cooling fluid in the longitudinal direction of the head for the distribution 2 The cooling fluid is discharged from the outlet 6 of the fluid of cooling in the longitudinal direction of the head for the confluence 5 Especially, the head for the distribution 2 is connected in its longitudinal direction with the respective continuous channels 3a of the channels 3A and 3B Accordingly, the cooling fluid sent in the direction Longitudinal head for distribution 2 allows continuous channels 3a of channels 3A and 3B to be supplied with almost equal cooling fluid In Figure 9, the flow direction of cooling fluid is not particularly limited Similar effects can be expected even when the location relationship or functions are exchanged between the input 1 of the cooling fluid and the outlet 6 of the cooling fluid, the head for the distribution 2 and the head for the confluence 5, or the continuous channels 3a and the return channels 3b of the channels 3A and 3B. Figure 10 shows another structure of the sump heat according to the embodiment 3 of the invention Figure 10 (e) is a top view of the heat sink Figure 10 (a) is a sectional view taken along line AA of Figure 10 (e) Figure 10 (b) is a sectional view taken along line BB of Figure 10 (e) Figure 10 (c) is a sectional view taken along the line
CC of Figure 1 0 (e) Figure 1 0 (d) is a sectional view taken along the line DD of Figure 1 0 (e) E n the heat sink 1 00 shown in the Figure 1 0, the respective return channels 3b of two channels 3A and 3B are adjacent to each other at the center of the heat transfer vessel 4 Two partition plates 25 are provided with multiple openings 24 and are provided in the mixing channel 1 8 connected to the respective return channels 3b of the channels 3A and 3B to form three channels, the upper, the middle and the lower Furthermore, in the mixing channel 1 8 connected to the respective continuous channels 3a of the channels 3A and 3B, the continuous channels located at both ends of the heat transfer containers 4, the dividing plates 22 are found to form the division between the return channels 3b and the continuous channels 3a. The partition plate 22 is arranged to be provided with an opening 23 so that each continuous channel 3a is connected with any of the channel 20 upper and lower channel 21 In this case, cooling fluid 9 flows into the respective continuous channels 3a of channels 3A and 3B, and continuous channels located at both ends of heat transfer container 4, flow from the openings 23 provided in the partition plates 22 within the upper channel 20 or the lower channel 21 i in the mixing channel 1 8, flow from the openings 24 provided in the plural number in the partition plates 25 within the middle channel 26 The cooling fluid 9 is then mixed in the mixing channel 1 8 connected to the return channels 3b. The mixed cooling fluid 9 has
Thus, the capacity to flow in each of the return channels 3b of the respective channels 3A and 3B. In the heat sink 1 00 of Figure 9, the head for the distribution 2 communicates with each of the channels. 3a continuous of the respective channels 3A and 3B through the connection channel 1 6c, while the head for the confluence 5 communicates with each of the return channels 3b of the respective channels 3A and 3B through the channel 1 6d In Figure 1 0, the flow direction of the cooling fluid is not specifically limited. Similar effects can be expected incl. use when the relation in location or functions is interchanged between the input 1 of the fl uid. of cooling and outlet 6 of the cooling fluid, the head for the distribution 2 the head for the confluence 5 or the continuous channels 3a and the return channels 3b of the channels 3A and 3B The above effect can also be reach when the dist The cooling temperature of the cooling flux is large in cross-section of a channel even in the case of forming a channel 3 in the heat transfer vessel 4. By suitably providing the partition plate 22 and the opening 23 allows to reach a effect similar to that of the cases in Figure 9 and 10, even if providing three or more channels 3 in parallel
Modality 4 Figure 1 1 shows a simplified structure of a heat sink according to the modality 4 of the invention
Figure 11 (c) is a top view of the heat sink Figure 11 (a) is a left side view of the heat sink Figure 11 (b) is a sectional view taken along line BB of the Figure 11 (c) Figure 12 shows a simplified structure of another heat sink according to the embodiment 4 of the invention Figure 12 (c) is a top view of the heat sink Figure 12 (a) is a side view left of the heat sink Figure 12 (b) is a sectional view taken along the line BB of Figure 12 (c) In the heat sink 100 of mode 4, the head for distribution 2 and the head for the confluence 5 are provided in parallel on the left side of the heat sink 100, so that they are displaced with respect to a surface in which the channels 3A and 3B are provided, as shown in Figures 11 and 12 Further, the head for distribution 2 on the left side, namely the lad or external is arranged to be shorter than the head for the confluence 5 on the right side, namely, the internal side The head for the distribution 2 communicates with each of the continuous channels 3a of the respective channels 3A and 3B a through the connection channel 16c The head for the confluence 5 communicates with each of the return channels 3b of the respective channels 3A and 3B through the connection channel 16d In the heat sink 100 shown in Figure 11, arranges that two cooling fluid inputs 1 and 1 'are formed for the head for distribution 2, while two outputs 6 and 6' of the cooling fluid
are formed for the head for the confluence 5, so that the pipe 101 can be connected, respectively, with any of the inputs 1 and 1 'of the cooling fluid and with any of the outputs 6 and 6' of the cooling fluid In accordance with this is achieved by a more flexible laying of the pipe in accordance with the condition of the fit. In the heat sink 100 shown in Figure 12, the longer head for the confluence 5 on the inner side is formed in an L-shape to be loaded to the left side end surface of the heat sink 100 This allows the inlet 1 of the cooling fluid and the outlet 6 of the cooling fluid to be provided on the left side end surface of the heat sink 100, namely a surface which intersects at right angles with an address to which the respective heads 2 and 5 are adjacent In accordance with this, a more flexible laying of the pipe is possible, so that the cooling system is more compact The head for the confluence 5 of the heat sink 100 shown in Figure 12 can achieve a similar effect even when formed with a silhouette of C Stacking of several heat sinks 100 provided with pipe 101 at its left side end is shown in Figure 11 to form a stacked structure, so as to form a cooling unit where multiple heat sinks 100 are connected, which allows the pipe mounting locations of the respective heat sinks 100 are unified in the upper left side or in the lower part, so that the cooling system is more compact In addition, the heat sink in mode 4 has five surfaces with the
ability to lay the pipe because the left side surface can also be used to lay the pipeline although the heat sinks 100 shown in Figures 6, 8 and 9 have four surfaces with the ability to lay the pipeline. more flexible pipe In addition, only three surfaces on the left side surface the upper surface and the lower surface are the surfaces from which the heat sink can be observed in case of a stacked structure This is especially effective when the respective heat sinks are connected to independently provide the heads in a cooling fluid circulation circuit, the heads are provided separately from the respective heat sinks 100 The respective heat sinks 100 shown in Figures 1 through 6 and in the 8 to 10 have a direction, since the heads 2 and 5 are thicker than the thickness The heat transfer vessel 4 and both surfaces of the heat sink 100 have a different shape. Accordingly, a type of heat sink 100 can be used to form the above structure in the case of stacking the heat sinks 100 in the same direction but two types of heat sinks 100 should be used where the places to provide the inlet 1 of the cooling fluid and the outlet 6 of the cooling fluid are different in the case of stacking the heat sinks 100 to be confronted one of the other By providing the inputs 1 and 1 'and the outputs 6 and 6' of the cooling fluid, respectively at both upper and lower ends of both heads 2 and 5, however, it allows the fluid inlets
of cooling and the outputs of the cooling fluid are provided, respectively, at the same height in the upper and lower parts on the left side of the heat sinks 1 00 in the stacked structure, even in the face stacked structure The upper cooling inlet and outlet of the cooling fluid can be selected for laying pipes. The other non-selected cooling fluid inlet and outlet group with a watertight cover and the like can be selected (by using a non-return valve). drainage) allows the heat sinks to be more flexibly mixed to form a cooling unit. The similar effect can be achieved in Figures 1 to 6 and
8 to 1 0 by providing, in a similar manner, the cooling fluid inlets 1 and 1 'and the cooling fluid 6 and 6', respectively, at the upper and lower ends. In addition, in FIG. 1, the cooling fluid 9 is arranged to flow into the head for distribution 2 or from the head for the confl uence 5 so as to cross at right angles with the heads The direction in which the cooling fluid is sent The head for the distribution 2 is the same direction in which the cooling fluid is sent to the channels 3A and 3B. In accordance with this, more cooling fluid 9 flows into one of the channels 3A and 3B, one being closer to a part from which the fluid is sent
9 cooling in the head for the distribution 2 This causes a displacement of one side in the respective channels 3A and 3B or a difference in the displacement between the respective channels 3A and 3B in some cases By providing a curved channel 27 between the input 1 of
cooling fluid and the head for the distribution 2 as shown in Figure 13, to arrange for the cooling fluid 9 to flow in the longitudinal direction of the head for the distribution 2, namely, a direction crossing at right angles with a flow direction of the cooling fluid in channels 3A and 3B, allows flow conditions at the ends of the respective channels 3A and 3B to comparatively resemble each other, since the cooling fluid in the head for the distribution 2 is different in the flow direction of the cooling fluid in the channels 3A and 3B This allows it to be maintained under the displacement of one side The curved channel 27 can also be provided in the connection part between the head for the confluence 5 and the outlet 6 of the cooling fluid in the case that the head for the confluence 5 is provided on the outer side In this case, the cooling fluid 9 is sent on the longitudinal direction of the head for the confluence 5, so that almost the same cooling fluid can be discharged from the return channels 3b of the respective channels 3A and 3B
Modality 5 Figure 14 shows a simplified structure of a heat sink according to the embodiment 5 of the invention Figure 14 (c) is a top view of a heat sink Figure 14 (a) is a sectional view taken along line AA of Figure 14 (c) Figure 14 (b) is a sectional view taken along the line
BB of Figure 1 4 (c) Mode 5 is an example of an optimal arrangement of multiple heating elements 8 including a high heat generating source 28 and a low heat generating source 29 in the heat sink. 1 00 in accordance with the invention Like typical electronics having a high heating density, considered as an energy modul The energy module is formed primarily of two points of GI BT and a diode, which They are provided in a substrate The energy module is often provided comparatively in a regular way in a column of even number of the IGBT and the diode generates more heat than the other in many cases, although it depends on the condition in which the energy module is used, and therefore, the heat sink 1 00 is usually used to cool for the purpose of maintaining the temperature of any high heating element 28 under a permissive temperature. In mode 5, defined as high-heat generating source 28 is not what has a high calorific value, rather it has a larger heat fl ow, namely a larger calorific value per unit area. low heat generating source 29, defined is what causes a different heat generating source to the high heat source 28 In Figure 14, such plural high heat generating sources 28 are provided along the respective continuous channels 3a of the channels 3A and 3B, while the plural sources 29 generating low heat are provided along the respective return channels 3b of the channels 3A and 3B
Such a structure allows the cooling fluid 9 of a low temperature to receive heat mainly from the lines of the high-heat generating sources 28 to raise the temperature as it passes through the continuous channels 3a of the respective channels 3A and 3B. of cooling that has raised the temperature returns through the channel 3c of return in U When passing through the return channels 3b of the respective channels 3A and 3B, the cooling means 9 receives the heat from the lines of the sources 29 low heat generators to also raise the temperature The high temperature cooling fluid 9 is then discharged from the outlet 6 of the cooling fluid through the head for the confluence 5 According to this, the temperature cooling fluid 9 plus low cooling the lines of the high-heat generating sources 28, while on the other hand, the cooling fluid 9 that has received heat and has raised the t emperature when passing through the continuous channels 3a cools the lines of the low-heat generating sources 29 This causes an elevation in the maximum temperature of the lines of the low-heat generating sources 29, unlike the case of cooling the generating sources of heat in either the continuous channel and the return channel The maximum temperature of the lines of the high-heat generating sources 28, however, decreases, the deviation in temperature in the heating element 8 is reduced, the uniformity of heat, and also, the maximum temperature of the high heat generating sources 28, which is the most important, decreases so that the heat characteristic is improved. In the heat sink 100 of Figure 14, the head for the
distribution 2 communicates with each of the continuous channels 3a of the respective channels 3A and 3B through the connection channel 16c, while the channel for the confluence 5 communicates with each of the return channels 3b of the respective channels 3A and 3B through the connection channel 16d. Figure 15 shows a simplified structure of another heat sink according to the embodiment 5 of the invention. Figure 15 (c) is a top view of the heat sink Figure 15 (a) is a sectional view taken along line AA of Figure 15 (c) Figure 15 (b) is a sectional view taken at along the line BB of Figure 15 (c) In the heat sink 100 of Figure 15, the continuous channels 3a of the channels 3A and 3B in the heat sink 100 of Figure 14 are formed to be common in the multiple heating elements 8 including the high heat generating sources 28 and the low heat generation sources 29, a group of the main heat generating source includes multiple high heat generating sources 28, which is provided in two rows along the continuous channel 3a, while a peripheral part of the main heat generating source including the generating sources 29 under heat is provided in two rows, so that a bridge can be created between the continuous channel 3a and the return channel 3b In the heat sink 100 of Figure 14, the two channels 3A and 3B are formed in the same plane, independent of each other In the heat sink 100 of Figure 15, however, the channels 3a
continuous channels 3A and 3B are formed in common The continuous channel 3a formed in common communicates with the return channels 3b of the channels 3A and 3B through the channels 3c of U-turn, respectively The heat sink 100 of Figure 15 can also achieve an effect similar to that of the heat sink 100 of Figure 14 In the heat sink of Figures 14 and 15, an example is shown that the high heat generating sources 28 are provided at the center of the heat sink. heat transfer vessel 4 However, the high heat generating source 28 can be provided on the outside side Any structure is possible as long as the high heat generating source 28 or the main heat generating group is cooled in the continuous channel 3a while the low heat generating source 29 or the peripheral part of the main heat generating source cools down in the return channel 3b In other words, any structure can be considered, always that the mounting part of the heat generating source, which is the most difficult to meet at the permissible temperature, is cooled in the continuous channel 3a and the other part is cooled in the return channel 3b
Modality 6 Figure 16 shows a simplified structure of a heat sink according to the embodiment 6 of the invention Figure 16 (b) is a side sectional view of the heat sink according to mode 6 Figure 16 (a) ) is a sectional view taken along the
line AA of Figure 16 (b) Figure 16 (a) also includes perspective views of heat transfer accelerator 11 and rectification structure 13 In heat sink 100 of mode 6, transfer accelerators 11 of heat of about the same length as the mounting length of the heating element in the flow direction of the cooling fluid are provided in the respective continuous channels 3a and in the respective return channels 3b of the channels 3A and 3B, provided just below the mounting surface of the heating element, as shown in FIG. 16 In addition, the rectification structure 13 is provided in at least one of an upstream side and a downstream side of the heat transfer accelerator 11 in an interval for the heat transfer accelerator 12 The length of the heat transfer accelerator 12 is defined to be the length of the channel thermally connected to a heat transfer surface between a heat generating source located on the upstream side and a heat generating source located on the downstream end side along the continuous channel 3a and the return channel 3b, respectively, in the case of assembly of a heating element including the heat generating source as plural IGBTs, for example, an energy module, for example Fixed projections 30 are provided respectively on the wall surfaces of channels 3A and 3B, where the ends of the heat transfer accelerator 11 and the rectification structure 13 Such an arrangement causes the displacement of one side in the channels
3A and 3B is rectified by means of the rectification structure 1 3 and the cooling fluid 9, whose flow has been uniformed to pass through the heat transfer accelerators 1 1. Accordingly, the heat effectively transfers the cooling fluid 9 from the heating element 8, so that the heat transfer characteristic is improved In addition, a hot spot due to a displacement of one side or a suspension of the cooling fluid can be maintained under E n the heat sink 1 00 of Figure 1 6 it is also arranged that the head for the distribution 2 communicate with each other of the continuous channels 3a of the respective channels 3A and 3B through a connection channel 1 6c, while the The head for the confluence 5 is combined with each one of the return channels 3b of the respective channels 3A and 3B through the connection channel 1 6d. The fixing projections 30 are provided in FIG. the wall surfaces of channels 3A and 3B in the heat sink 1 00 in Figure 1 6 On the wall surfaces of channels 3A and 3B, however, fixation concave can be provided on which the heat transfer accelerator 1 1 and the rectification structure 1 3 can be mounted. Furthermore, with respect to the rectification reinforcement described in mode 1, it can be set on a channel by means of a fixing projection 30 if my lar or a similar fixing concave The length of the heat transfer accelerator 1 1 in the flow direction of the cooling fluid may be longer than the
length of the heating element assembly However, in this case, the periphery of the heating element is excessively cold, and thus, the temperature deviation in the mounting surface of the heating element increases, in addition, the increase in the loss in pressure deteriorates the fluid characteristic and the heat transfer characteristic However, in mode 6, the heat transfer accelerator 11 is provided, whose length is almost equal to the length of the heating element assembly in the flow direction , that is, a bit shorter than the length of the assembly of the heating element in Figure 16, and the rectification structure 13 which is separated from the heat transfer accelerator 11 and which is provided in its place thermally connected to the element This prevents the displacement of one side by means of the rectification structure 13. In addition, there is no excessively cooled part described above and therefore, the temperature deviation in the mounting surface of the heating element is decreased, so that the uniformity of heat can be improved. The length of a gap between the heat transfer accelerator 11 and the rectification structure 13, preferably, is twice or more than the hydraulic equivalent diameter in the rectification structure 13 Such length allows to achieve the rectification effect In addition, the length of the interval of five times or more is more effective, the length of the hydraulic equivalent diameter In case of using an insert such as heat transfer accelerator 11, a fixing projection 30 or a
concave as shown in Figure 16, which allows the placement of the heat transfer accelerator 11 and the rectification structure 13 and allows for easy manufacturing operation. In addition, it may be possible to use an integrated structural body formed from the rectification structure 13 and heat transfer accelerator 11, which are connected by means of a connection part 12, as shown in Figure 17
Modality 7 Figure 18 is a simplified perspective view of a heat sink according to the embodiment 7 of the invention. Figure 19 is a simplified perspective view of another heat sink according to the embodiment 7 of the invention. Mode 7 heat sink, a heat transfer vessel 4 is formed in a bent structure to have an essentially S-shaped cross section and includes three flat layers 41, 42 and 43 of the heat transfer vessel, as is shown in Figure 18 The three layers 41, 42, and 43 of the heat transfer vessel of the heat transfer vessel 4 are provided with the heating elements 8A and 8B and 8C, respectively. This allows to provide a compact heat sink , which cools the multiple heating elements 8A and 8B and 8C The layers 41, 42 and 43 of the heat transfer container are respectively formed in a similar manner to the heat transfer containers 4 of modes 1 to 4
Figure 1 9 shows a heat sink or a cooling unit, which is formed by dividing the heat transfer vessel 4 having an essentially S-shaped cross section in multiple members 4a, 4b and 4c of container to connect the members
5 4a, 4b and 4c of recipients divided among themselves Dividing the heat transfer container 4 facilitates the manufacture The members 4a, 4b and 4c of the container respectively, have the heat transfer layers 41, 42 and 43 Elements 8A and 8B and 8C can be arranged to be cooled
IO only from one surface or from both surfaces In the embodiment 7, the heat transfer container 4 is preferably formed of a material having flexibility ie the intervals between the layers 41, 42 and 43 of adjacent heat transfer vessel between the heat transfer layers 41, 42 and 43 of the
15 heat transfer container 4 are slightly enlarged to assemble the element elements 8A and 8B and 80 and then all of the above are walled together This allows the thermal contact between the heating elements 8A and 8B and 80 to be improved and the heat transfer layers 41, 42 and 43 The air tightness of the channels 3A and 3B is
20 improves when the opening 1 5, described in the embodiment 1, is provided in the heat transfer container 4. In addition, in the case that the heat transfer container 4 is divided, the containers 4a, 4b and 4c of Divided heat transfer can be easily connected The heat transfer vessel 4 has a cross section
25 transverse l essentially in the form of S in mode 7, shown in
Figures 18 and 19 However, the heat transfer container 4 is not specifically limited to this structure, as long as it has a structure bent essentially in the shape of a wave, such as a U shape and a W shape and the Heating element is held between the folded layers
Modality 8 Figure 20 shows a simplified cooling unit according to the embodiment 8 of the invention, for each component Figure 20 (a) shows an upper heat sink 100a Figure 20 (B) shows a medium heat sink 100b Figure 20 (c) shows a lower heat sink 100c The heat sinks 100a, 100b and 100c are stacked in three layers to form a cooling unit In each of Figures 20 (A), 20 (B) and 20 (C), (c) is a top view of the heat sink in each layer, (b) is a sectional view taken along line AA in (c) and (c) is a sectional view taken at along the line BB in (c) The lower heat sink 100c shown in Figure 20 (C) is a heat sink having a structure similar to that of the mode 2 shown in Figure 6, for example, the heat sink is provided with connection openings 32 in the upper surfaces of the head for distribution 2 and the head for the confluence 5, namely, a stacking surface where the heat sink 100b is stacked medium The heat sink 100b medium shown in Figure 20 (B) is a heat sink having a structure similar to that of mode 2, shown
in Figure 6, for example, a heat sink provided without an inlet 1 of the cooling fluid and without an outlet 6 of the cooling fluid and with connection openings 32 in the upper and lower surfaces of the head for distribution 2 and head for the confluence 5, namely, stacking surfaces where the upper and lower heat sinks 100a are stacked 100b The upper heat sink 100a shown in Figure 20 (A) is a heat sink having a similar structure to that of mode 2, shown in Figure 6, for example, the heat sink is provided without an inlet 1 of the cooling fluid and without an outlet 6 of the cooling fluid and with connection openings 32 in the lower surfaces of the head for the distribution 2 and the head for the confluence 5, namely, a stacking surface where the heat sink 100b is stacked medium A cooling unit, shown in Figure 20, in accordance with the mode 8, is formed from the heat sinks 100a, 100b and 100c having the above structures stacked in three layers so that the channels 3A and 3B of the respective heat sinks 100a, 100b and 100c will be provided in parallel with each other through of the connection openings 32 In all the heat sinks 100a, 100b and 100c, the head for the distribution 2 communicates with the continuous channels 3a of the respective channels 3A and 3B through the connection channels 16c, while the head for the confluence 5 it communicates with the return channels 3b of the respective channels 3A and 3B through the connection channels 16d. Figure 21 shows another simplified cooling unit of
according to the embodiment 8 of the invention for each component Figure 21 (A) shows a heat sump 100d upper Figure 21 (B) shows a heat sump 100e medium Figure 21 (C) shows a heat sink 100f lower The heat sinks 100d, 100e and 10Of are stacked in three layers to form a cooling unit. In each of the Figures 21 (A), 21 (B) and 21 (0), (c) is a top view of the heat sink in each layer, (a) is a sectional view taken along line AA in (c) and (b) is a sectional view taken along line BB in (c)? The lower heat sink 10Of shown in Figure 21 (0) is arranged to be provided with the inlet 1 of the cooling fluid at the end of the head for the distribution 2 and with a connection opening 320 in a top surface of the head for the confluence 5, namely a stacking surface where the heat sink is stacked
I5 100e medium The lower heat sink 10Of is also arranged so that a connecting opening 321 provided in the upper surface of the heat sink, namely on the stacking surface where the medium heat sink 100e is stacked, is communicated with an outlet 6 of the cooling fluid separated from the head for the confluence 5 In the sump
20 heat 1 Lower OOf, the inlet 1 of the cooling fluid is provided on the upper end surface of the head 2 as shown in Figure 21 (0) The inlet 1 of the cooling fluid can be provided on an end surface opposite to the previous one The head for the distribution 2 of the lower heat sink 100 communicates with the
IJ. 3a continuous channels of the respective channels 3A and 3B through the
connection channels 16c The head for the confluence 5 communicates with the return channels 3b of the respective channels 3A and 3B through the connection channels 16d The medium heat sink 100e shown in Figure 21 (B) is arranged to to be provided without an inlet 1 of the cooling fluid and without outlet 6 of the cooling fluid and with a connection opening 320 in a lower surface of the head for the distribution 2, namely a stacking surface where the sump is stacked. lower heat 100f and a connecting opening 322 on an upper surface of the head for the confluence 5, namely, a stacking surface where the upper heat sink 100d is stacked The medium heat sink 100e is also arranged so that a channel 3210 for connecting a connection opening 321 of the lower heat sink 10Of and a connection opening 321 of the upper heat sink 100d are separately provided from the head ezal for the distribution 2 and the head for the confluence 5 The head for the distribution 2 of the heat sink 100e medium communicates with the continuous channels 3a of the respective channels 3A and 3B through the connection channels 16c The head for the confluence 5 communicates with the return channels 3b of the respective channels 3A and 3B through the connection channels 16d The upper heat sink 100d shown in Figure 21 (A) is arranged to be provided without a fluid inlet 1 of cooling and without an outlet 6 of the cooling fluid and with a connection opening 322 in a lower surface of the head for the distribution 2, namely a
stacking surface where the heat sink 100e is stacked medium and a connection opening 321 in a bottom surface of the head for the confluence 5, namely a stacking surface where the heat sink is stacked 100e medium The head for stacking the distribution 2 of the upper heat sink 100d communicates with the continuous channels 3a of the respective channels 3A and 3B through the connection channels 16c The head for the confluence 5 communicates with the return channels 3b of the respective channels 3A and 3B through the connection channels 16d The cooling unit shown in Figure 21 is formed by the 100d heat sinks, 100e, 1 OOf that are stacked in three layers, so that the channels 3A and 3B of the respective heat sinks 100d, 100e and 1 OOf r are supplied in series. Figure 22 shows another simplified cooling unit in accordance with the modality 8 of the invention for each component Figure 22 (A) shows a heat sump 100g upper Figure 22 (b) shows a heat sump 100h medium Figure 22 (c) shows a heat sink 100? bottom Heat sinks 100g, 100h and 100? they are stacked in three layers to form a cooling unit. In each of the Figures 22 (A) 22 (B), and 22 (C), (c) is a top view of the heat sink in each layer, (a) is a sectional view taken along line AA in (c) and (b) is a sectional view taken along line BB in (c) The heat sink 10Oi shown in Figure 22 (0) ) is arranged to be provided without an outlet 6 of the cooling fluid and with the
inlet 1 of the cooling fluid at one end of the head for the distribution 2 and a connection opening 32 in a top surface of the head for the confluence 5, namely a surface of apiece where the m ideh of heat 1 00h medium The head for distribution 2 of the heat sink 1 00? it communicates with the channels 3a contiguous of the respective channels 3A and 3B through the connection channels 1 6c The head for the confl uence 5 communicates with the return channels 3b of the respective channels 3A and 3B through the channels. connection channels 16d The medium heat sink 1 00h shown in Figure 22 (B) is arranged to be provided without an inlet 1 of the cooling fluid and if there is an outlet 6 of cooling fluid and with the openings 32 of connection on a lower surface of the head for the distribution 2, namely, a stacking surface where the heat sink 1 0Oi lower and on an upper surface of the head for the confluence 5, namely a surface of api side where the heat sink 1 00g upper was apg The head for the distribution 2 of the heat sink 1 00h medium communicates with the continuous channels 3a of the respective channels 3A and 3B through channels 1 6c of connection The cab The heat for the confluence 5 is combined with the return channels 3b of the respective channels 3A and 3B through the connection channels 1 6d The heat sink 1 00g of heat shown in Figure 22 (A) is arranged to be provided without an inlet 1 of the cooling fluid and with a connection opening 32 in a lower surface of the head for the distribution 2, namely a stacking surface where the
heat sink 100h medium and outlet 6 of the cooling fluid at the end of the head for the confluence 5 The head for the distribution 2 of the heat sink 100g communicates with the continuous channels 3a of the respective channels 3A and 3B through the connection channels 16c The head for the confluence 5 communicates with the return channels 3b of the respective channels 3A and 3B through the connection channels 16d The cooling unit shown in Figure 22 is formed by the heat sinks 100g, 100h and 100 ?, which are stacked in three layers so that the channels 3A and 3B of the respective heat sinks 100g, 100h and 10Oi are provided in series Such structure allows to stack easily the multiple heat sinks, so that it can be provide a compact cooling unit The structures and methods of connection of the connection openings 32, 320, 321 and 322 are not specifically limited, provided that the openings 32, 320, 321, and 322 can be connected together so that cooling fluid 9 flows through them. Two connection openings can be connected directly, through an O-ring or a packing or through a flow pipe (which includes a bend and an elbow), for example In addition, in mode 8 shows an example where the connection opening 32 is provided on the upper or lower surfaces of the heads 2 and 5 However, the invention is not specifically limited to the above The cooling unit can be arranged
to be provided with connection openings in the side walls of the heads 2 and 5 to connect the connection openings so that the channels 3A and 3B of the respective heat sinks are provided in series or in parallel by means of a shaped bend In addition, in mode 8, a stack structure formed from multiple stacked heat sinks is exemplified. Multiple heat sinks, however, may be provided on any surface to be connected to each other. Multiple heat sinks may also be provided. provided on any surface so that the heat sinks 2 and 5 can be confronted with each other, to be connected together An integration structure is not specifically limited, provided that the cooling unit is formed of a combination of multiple heat sinks
A method for mounting each of the heat sinks is not specifically limited. The heat sinks can be connected respectively, by means of fixing accessories (such as a bolt and nut) or mounted on frames or their like. A projection in contact with a The heat sink can be provided in at least one of the four corners of another heat sink, in order to avoid a change in the shape of the heat sink. Furthermore, the structural strength is reduced when a part of the heat sink is resin form Accordingly, in the cooling unit formed of multiple stacked heat sinks, fixing plates can be provided on the outer sides of the heat sinks at both ends, to hold the unit
cooling between the fixing plates for the purpose of fixing the cooling unit, for example In each of the aforementioned modes, the cross-sectional shape of each comprises, the shape of a channel, the relative size and its similarities. they are exemplified and do not limit themselves to the description
Brief Description of the Drawings Figure 1 shows a structure of a heat sink according to the modality 1 of the invention Figure 2 shows a structure of another heat sink according to the modality 1 of the Figure 3 is a perspective view showing a heat transfer accelerator according to the modality 1 of the invention Figure 4 is a perspective view showing another heat transfer accelerator according to the modality 1 of the invention Fig. 5 shows a structure of a heat sink according to the embodiment 2 of the invention Fig. 6 shows a structure of another heat sink in accordance with the modality 2 of The invention Figure 7 shows a structure of another heat sink according to the embodiment 2 of the invention. Figure 8 shows a structure of a heat sink of
According to the embodiment 3 of the invention Figure 9 shows a structure of another heat sink according to the embodiment 3 of the invention. Figure 10 shows a structure of another heat sink according to the embodiment 3 of the invention. 11 shows a structure of a heat sink according to the embodiment 4 of the invention. Figure 12 shows a structure of another heat sink according to the embodiment 4 of the invention. Figure 13 shows a structure of another heat sink of According to the embodiment 4 of the invention Figure 14 shows another heat sink according to the embodiment 5 of the invention. Figure 15 shows a structure of another heat sink according to the embodiment 5 of the invention. Figure 16 shows a structure of a heat sink according to the embodiment 6 of the invention Figure 17 shows a perspective view showing a structure integrated structural body of a rectification structure and a heat transfer accelerator according to the embodiment 6 of the invention. Figure 18 is a structural view showing a heat sink according to the embodiment 7 of the invention. Figure 19 is a structural view showing another heat sink according to the embodiment 7 of the invention
Figure 20 shows a cooling unit according to embodiment 8 of the invention. Figure 21 shows another cooling unit according to embodiment 8 of the invention. Figure 22 shows another cooling unit according to embodiment 8 of the invention.