CN102853699A

CN102853699A - Cooling device

Info

Publication number: CN102853699A
Application number: CN2012100489288A
Authority: CN
Inventors: 本村修; 小岛伸行; 佐久间直人; 伊藤信雄
Original assignee: UNITY HOUSEHOLD APPLIANCE TECHNOLOGY Co Ltd
Current assignee: UNITY HOUSEHOLD APPLIANCE TECHNOLOGY Co Ltd; Toshiba Home Technology Corp
Priority date: 2011-06-27
Filing date: 2012-02-28
Publication date: 2013-01-02
Anticipated expiration: 2032-02-28
Also published as: US20120325440A1; JP2013100977A; JP5772614B2; CN102853699B

Abstract

There is provided a cooling device not affected by gravity by exerting a strong capillary attraction to be hard to deteriorate in transportation function due to sufficient flow of a circulation liquid. Unidirectionally-aligned copper fiber assembly (8) is mounted, by a sintering process, on an inner wall of a heat pipe (3) along the longitudinal direction of the heat pipe (3). Therefore, by a strong capillary attraction caused by fine copper fiber assembly (8), purified water can be transported without being affected by gravity. A flow volume just enough for the purified water to be prevented from drying out by its evaporation can be maintained, thus making it hard for a function in the transportation of the purified water to be deactivated. Further, the unidirectionally-aligned copper fiber assembly (8) is mounted along the longitudinal direction of heat pipe (3) and hence the purified water smoothly flows in the longitudinal direction of heat pipe (3), and thus making it hard for a function in the transportation of the purified water to be deactivated. Furthermore, the unidirectionally-aligned copper fiber assembly (8) is mounted, by a sintering process, on an inner wall of a heat pipe (3) along the longitudinal direction of the heat pipe (3), thereby maintaining heat conduction of the heat pipe (3) and the copper fiber assembly (8), and therefore heat resistance of the heat pipe (3) is optimized.

Description

Cooler

Technical field

The present invention relates to a kind of cooling that is suitable for thermal source, small-sized and cooler that heat conveying capacity is larger.

Background technology

All the time, known to following cooler, namely, by groove being formed on the inwall of body, or copper powder is sintered on the inwall of body, thereby the capillarity of utilizing these grooves or copper powder to have, and the cooler (for example, with reference to patent documentation 1) that will carry to heated parts at the circulation fluid of heat unit place condensation.

Technical literature formerly

Patent documentation

Patent documentation 1: TOHKEMY 2006-284020 communique

Summary of the invention

Invent problem to be solved

But, in existing structure, that circulation fluid is also insufficient from the function that heat unit is delivered to heated parts.That is, in the structure on the inwall that groove is formed at body, capillarity a little less than, thereby according to the posture that arranges of radiator, be subjected to sometimes the impact of gravity, and cause the conveying function of circulation fluid to stop.Moreover, in the structure on the inwall that copper powder is sintered in body, there is following shortcoming, namely, the flow of circulation fluid is insufficient, thereby cause the conveying function of circulation fluid to descend easily, or have to strengthen the amount of copper powder for the flow that obtains sufficient circulation fluid, thereby cause device to become large, become heavy.

Therefore, point the object of the invention is in view of the above problems, thus the impact that provides a kind of capillarity more can not be subject to gravity, thus and the sufficient cooler that is difficult for the decline of generation conveying function of the flow of circulation fluid.

Be used for solving the method for problem

In the technical scheme 1 of the present invention, although being detained in a distolateral condensation owing to steam of body has circulation fluid, and in another distolateral circulation fluid evaporation of body, but the stronger capillarity by fine fiber, thereby can be under the condition of the impact that is not subjected to gravity, circulation fluid is carried, and owing to can keep can not causing because of the evaporation of circulation fluid the flow of the degree that circulation fluid exhausts, therefore also be difficult for forfeiture as the conveying function of the circulation fluid of cooler.

In technical scheme 2 of the present invention, owing to along the direction as the length direction of body the corpus fibrosum that is made of unidirectional fiber is loaded, therefore circulation fluid is swimmingly in the flows lengthwise of body, thus the more difficult forfeiture of the conveying function of circulation fluid.And, owing to corpus fibrosum is filled on the inwall of body by sintering, thereby can keep preferably heat conductivity between body and the corpus fibrosum, optimize thus the thermal resistance of body.

In technical scheme 3 of the present invention, capillarity by the groove on the inwall that is formed at body, the in addition stronger capillarity of fine fiber, thereby can be under the condition of the impact that is not subjected to gravity, reliably circulation fluid is carried, and owing to can keep fully can not causing because of the evaporation of circulation fluid the flow of the degree that circulation fluid exhausts, therefore also more difficult forfeiture as the conveying function of the circulation fluid of cooler.And, owing to use the peristome of fiber-covered groove, thus capillarity obtains tremendous raising, can improve thus the performance of cooler.

In technical scheme 4 of the present invention, owing to along the direction as the length direction of body the corpus fibrosum that is made of unidirectional fiber is loaded, therefore circulation fluid is swimmingly in the flows lengthwise of body, thus the more difficult forfeiture of the conveying function of circulation fluid.And, owing to by sintering corpus fibrosum filled on the groove on the inwall that is formed on body, thereby can keep preferably heat conductivity between body and the corpus fibrosum, optimize thus the thermal resistance of body.

In technical scheme 5 of the present invention, capillarity by the groove on the inwall that is formed at body, the in addition stronger capillarity of fine fiber, thereby can be under the condition of the impact that is not subjected to gravity, reliably circulation fluid is carried, and owing to can keep can not causing because of the evaporation of circulation fluid the flow of the degree that circulation fluid exhausts, therefore also more difficult forfeiture as the conveying function of the circulation fluid of cooler.Moreover fiber is by being woven into mesh-shape, thereby can be arranged on equably the precalculated position in the body.And, owing to form cylindrical body with fiber, thus therefore good cheap to the operability of body filling.And, owing to use the peristome of fiber-covered groove, thus capillarity obtains tremendous raising, can improve thus the performance of cooler.

In technical scheme 6 of the present invention, capillarity by the groove on the inwall that is formed at body, the in addition stronger capillarity of fine fiber, thereby can be under the condition of the impact that is not subjected to gravity, reliably circulation fluid is carried, and owing to can keep fully can not causing because of the evaporation of circulation fluid the flow of the degree that circulation fluid exhausts, therefore also more difficult forfeiture as the conveying function of the circulation fluid of cooler.And, owing to use the peristome of fiber-covered groove, thus capillarity obtains tremendous raising, can improve thus the performance of cooler.

In technical scheme 7 of the present invention, owing to form the body of groove and the material of fiber is identical copper, so capillarity becomes maximum, thereby can further improve the performance of cooler.

In technical scheme 8 of the present invention, be set in more than the 20 μ m by the wire diameter with fiber, thereby can avoid the operational problem of fiber breakage etc.Moreover, when the wire diameter of fiber during less than the well width of groove, between groove and fiber, can realize freely changing of gas phase and liquid phase, thereby can further improve the performance of cooler.

In technical scheme 9 of the present invention, capillarity by the groove on the inwall that is formed at body, the in addition stronger capillarity of fine fiber, thereby can be under the condition of the impact that is not subjected to gravity, reliably circulation fluid is carried, and owing to can keep fully can not causing because of the evaporation of circulation fluid the flow of the degree that circulation fluid exhausts, therefore also more difficult forfeiture as the conveying function of the circulation fluid of cooler.Moreover, make it to be close to after in filling in body by will be in advance fiber being carried out plates that sintering forms, and the protuberance of plates and groove is sintered together, thereby can improve to greatest extent capillarity, and suppress to greatest extent thickness.And, because the peristome with the fiber-covered groove, therefore capillarity obtains tremendous raising, can improve thus the performance of cooler, and owing to by sintering corpus fibrosum filled on the groove on the inwall that is formed on body, thereby can keep preferably the heat conductivity between body and the corpus fibrosum, optimize thus the thermal resistance of body.

In technical scheme 10 of the present invention, capillarity by the groove on the inwall that is formed at body, the in addition stronger capillarity of fine fiber, thereby can be under the condition of the impact that is not subjected to gravity, reliably circulation fluid is carried, and owing to can keep fully can not causing because of the evaporation of circulation fluid the flow of the degree that circulation fluid exhausts, therefore also more difficult forfeiture as the conveying function of the circulation fluid of cooler.Moreover, fill in the inside of body by the nonwoven that superimposed straight line fiber and reticular fibre are formed, thereby the close property between nonwoven and the protuberance is good, and, because the peristome of groove is by the non-textile mulch with fine space, so capillarity obtains tremendous raising, can improve thus the performance of cooler, and pass through thinner nonwoven, thereby also can realize the slimming of body.And, owing to by sintering nonwoven filled on the groove on the inwall that is formed on body, thereby can keep preferably heat conductivity between body and the nonwoven, optimize thus the thermal resistance of body.

In technical scheme 11 of the present invention, capillarity by the groove on the inwall that is formed at body, the in addition stronger capillarity of fine fiber, thereby can be under the condition of the impact that is not subjected to gravity, reliably circulation fluid is carried, and owing to can keep fully can not causing because of the evaporation of circulation fluid the flow of the degree that circulation fluid exhausts, therefore also more difficult forfeiture as the conveying function of the circulation fluid of cooler.Moreover, carry out the inside that the resulting plates of sintering fill in body by forming nonwoven to superimposed straight line fiber and reticular fibre, thereby the close property between plates and the protuberance is good, and, because the peristome of groove is covered by the plates with fine space, so capillarity obtains tremendous raising, can improve thus the performance of cooler, and pass through thinner plates, thereby also can realize the slimming of body.And, owing to by sintering plates are filled on the groove on the inwall that is formed on body, thereby can keep preferably heat conductivity between body and the plates, optimize thus the thermal resistance of body.

The effect of invention

According to the invention of technical scheme 1, thus the impact that can provide capillarity more can not be subject to strong gravity, thereby and the flow of circulation fluid also fully be difficult for producing the cooler of the decline of conveying function.

According to the invention of technical scheme 2, conveying function that can more difficult forfeiture circulation fluid, and can optimize the thermal resistance of body.

According to the invention of technical scheme 3, thus the impact that can provide capillarity more can not be subject to strong gravity, thereby and the flow of circulation fluid also fully be difficult for producing the cooler of the decline of conveying function.Moreover capillarity obtains tremendous raising, can improve thus the performance of cooler.

According to the invention of technical scheme 4, conveying function that can more difficult forfeiture circulation fluid, and can optimize the thermal resistance of body.

According to the invention of technical scheme 5, thus the impact that can provide capillarity more can not be subject to strong gravity, thereby and the flow of circulation fluid also fully be difficult for producing the cooler of the decline of conveying function.Moreover, thereby the good cheap cooler of operability that loads in the body can be provided, and capillarity obtains tremendous raising, can improve thus the performance of cooler.

According to the invention of technical scheme 6, thus the impact that can provide capillarity more can not be subject to strong gravity, thereby and the flow of circulation fluid also fully be difficult for producing the cooler of the decline of conveying function.Moreover capillarity obtains tremendous raising, can improve thus the performance of cooler.

According to the invention of technical scheme 7, capillarity becomes maximum, thereby can further improve the performance of cooler.

According to the invention of technical scheme 8, can realize freely changing of gas phase and liquid phase, thereby can further improve the performance of cooler.

According to the invention of technical scheme 9, thus the impact that can provide capillarity more can not be subject to strong gravity, thereby and the flow of circulation fluid also fully be difficult for producing the cooler of the decline of conveying function.Moreover, can improve to greatest extent capillarity, and suppress to greatest extent thickness.And capillarity obtains tremendous raising, can improve thus the performance of cooler, and can optimize the thermal resistance of body.

According to the invention of technical scheme 10, thus the impact that can provide capillarity more can not be subject to strong gravity, thereby and the flow of circulation fluid also fully be difficult for producing the cooler of the decline of conveying function.Moreover capillarity obtains tremendous raising, can improve thus the performance of cooler, and can realize the slimming of body, and can optimize the thermal resistance of body.

According to the invention of technical scheme 11, thus the impact that can provide capillarity more can not be subject to strong gravity, thereby and the flow of circulation fluid also fully be difficult for producing the cooler of the decline of conveying function.Moreover capillarity obtains tremendous raising, can improve thus the performance of cooler, and can realize the slimming of body, and can optimize the thermal resistance of body.

Description of drawings

Fig. 1 is the stereoscopic figure as the radiator unit of the cooler that shares in the embodiments of the present invention.

Fig. 2 is the same, is the stereoscopic figure that observes from the other direction of cooler.

Fig. 3 is the same, is the stereoscopic figure of the heat pipe monomer after the flat processing.

Fig. 4 is the same, is the stereoscopic figure of the heat pipe monomer before the flat processing.

Fig. 5 is the cutaway view along the A-A line of Fig. 4 in the first embodiment of the present invention.

Fig. 6 is the same, is the outside drawing of direction-free copper fiber.

Fig. 7 is the same, is the outside drawing of the copper fiber after marshalling on the one direction.

Fig. 8 is the same, is the cutaway view along the A-A line of Fig. 4 of another example of expression cooler.

Fig. 9 is the same, has carried out the partial sectional view behind the sintering for filling copper fiber and to it.

Figure 10 is the same, is the amplification view of Fig. 9.

Figure 11 is the cutaway view along the A-A line of Fig. 4 in the second embodiment of the present invention.

Figure 12 is the same, is the photo after the heat pipe along the reality of the B-B line of Figure 11 has been carried out taking.

Figure 13 is the same, is the photo after Figure 12 is amplified.

Figure 14 is the cutaway view along the A-A line of Fig. 4 in the third embodiment of the invention.

Figure 15 is the same, is the stereoscopic photo of the plates that are made of the copper fiber.

Figure 16 is the same, is the stereoscopic figure of copper fiber.

Figure 17 is the same, is the outside drawing of the major part in filling plates process.

Figure 18 is the same, is the photo of the cross section of the major part of opposite heat tube after having carried out taking.

Figure 19 is the same, is the global sections of the opposite heat tube photo after having carried out taking.

Figure 20 is the same, is the cutaway view along the A-A line of Fig. 4 in the four embodiment of the invention.

Figure 21 is the same, is wound in the photo of the metallic fiber on the corrugated board sheet for expression.

Figure 22 is the same, is the key diagram of manufacture process of expression nonwoven.

Figure 23 is the same, nonwoven has been carried out the photo of the sintered sheet body that obtains behind the sintering for expression.

Figure 24 is the same, is the photo of each surface local with the reticular fibre side of sintered sheet body and straight line fiber side after amplifying.

Figure 25 is the same, is the outside drawing of the major part in filling sintered sheet body process.

Figure 26 is the same, for having carried out the photo after the shooting in the major part cross section of opposite heat tube.

Figure 27 is the same, is the global sections of the opposite heat tube photo after having carried out taking.

Figure 28 is the same, be as with the contrast of Figure 19 and Figure 27, and the photo after the global sections of heat pipe of the prior art carried out taking.

The specific embodiment

Below, about the preferred embodiment of cooler of the present invention, be that the radiator unit of CPU etc. describes as example take the main heating part to cooling PC (personal computer).

Fig. 1 and Fig. 2 illustrate the overall structure as the radiator unit of the cooler that shares in each embodiment.In these figure, 1 heated sheet made of copper of installing for being close to described CPU (not shown), 2 for making up the fin that many metallic plates consist of in order to divide a plurality of airways of formation, heated sheet 1 is close to and is connected on another the distolateral heated parts 11 that is formed at as the heat pipe 3 of body, and fin 2 is close to and is connected on the distolateral radiating part 12 that is formed at heat pipe 3.Never the wind of illustrated air-supply arrangement output passes each airway of radiating part 12.

As shown in Figure 3 and Figure 4, heat pipe 3 is preferably, metal pipe material by the higher copper of heat conductivity or copper alloy etc. forms, and the two ends by the heat pipe cavity 4 that extends at the length direction along the hollow cylindrical that becomes main part, by suitable methods such as Tig (Wolfram Inert Gas) welding and form respectively sealing 5,6, thus with the inside of heat pipe cavity 4 airtight be vacuum state.Moreover under the state before flat and bending machining shown in Figure 4, heat pipe 3 is whole linearly, and except sealing 5,6, its profile and thickness are formed fixing in axial total length.

; be arranged in the situation of the slim e-machines such as notebook computer at the radiator unit that will comprise heat pipe 3; because the space that arranges in the slim e-machine is limit; therefore under the state after the flat and bending machining shown in Figure 3; be formed with bend 21 as required and in the appropriate position of heat pipe cavity 4, and be formed with the part by opposite heat tube cavity 4 or wholely carry out the plat part 22 that extrusion process consists of.The surface that has formed the heat pipe cavity 4 of this plat part 22 becomes tabular substantially.In the present embodiment, by forming plat part 22 at the heated parts 11 of heat pipe 3 and radiating part 12 places at least, and heated sheet 1 and fin 2 are installed on this plat part 22, thus improve heated sheet 1 and fin 2, and heat pipe 3 between close property.

Fig. 5～Figure 10 illustrates the related radiator unit of the first embodiment of the present invention.Particularly in Fig. 5, illustrate the cutaway view on heat pipe shown in Figure 43 and the direction length direction quadrature.In the figure, the inwall of heat pipe cavity 4 is herein formed by the round and smooth curved surface 16 without convex-concave, and is accommodated in the heat pipe 3 so that the mode of being close to this curved surface 16 is sealed as the copper corpus fibrosum 8 that is the corpus fibrosum of capillary pipe structure.Copper corpus fibrosum 8 from an end of heat pipe 3 so that continual mode is filled to the other end continuously in the centre.Thus, be respectively equipped with first flow 17 and the second runner 18 in the inside of heat pipe 3, described first flow 17 is formed in the copper corpus fibrosum 8, and the pure water as circulation fluid (not shown) in radiating part 12 places condensation is moved towards heated parts 11, and described the second runner 18 will be formed in the zone that is surrounded by copper corpus fibrosum 8, and the steam in the evaporation of heated parts 11 places is moved towards radiating part 12.

Fig. 6 and Fig. 7 illustrate the outward appearance of copper corpus fibrosum 8 monomers.Copper corpus fibrosum 8A shown in Figure 6 is in a plurality of modes that link together at random as the copper cash 24 of fiber of diameter with a few μ m～tens μ m and form, moreover, copper corpus fibrosum 8B shown in Figure 7 to be having the diameter of a few μ m～tens μ m, and long, a plurality of copper cash 24 as fiber of comparing with the copper cash of copper corpus fibrosum 8A are stratiform and marshalling and the mode that links together and form on one direction.And, adopt following structure, that is, preferably by sintering be the one party among unidirectional copper corpus fibrosum 8B of a direction with the orientation determination of the uncertain direction-free copper corpus fibrosum 8A of the direction of copper cash 24 and copper cash 24, be close on the inwall that fills in heat pipe 3.Especially, copper corpus fibrosum 8B is in order to improve its capillarity, and copper cash 24 is configured in the mode along the length direction marshalling of heat pipe 3.

In order to make heat pipe 3 as shown in Figure 3, at first, end (or other end) from the heat pipe 3 of having opened two ends, curved surface 16 on the inwall that is formed at heat pipe 3 has loaded after the copper corpus fibrosum 8, by forging and pressing processing one end of heat pipe 3 is tied tight and undergauge, further, seal reducing diameter part by the Tig welding, thereby form sealing 5.Moreover the other end of heat pipe 3 is also tied tight and undergauge by forging and pressing processing, and forms as the mouth of pipe that is used for carrying out the injection of pure water and vacuumizes.Then, vacuumizing in the injection of the inside of heat pipe 3 from this mouth of pipe enforcement pure water, seal this spout part by the Tig welding again, thereby form sealing 6.At this time point, the inside of heat pipe 3 is sealed in the mode of cutting off with extraneous air, thereby has obtained the heat pipe 3 at the two ends of heat pipe cavity 4 as shown in Figure 4, sealed linearity by sealing 5,6.Then, as indicated above, form bend 21 by implement bending machining in the appropriate position of heat pipe cavity 4, and the part of opposite heat tube cavity 4 or whole implementation extrusion process and form plat part 22, thereby the heat pipe 3 of required form as shown in Figure 3 obtained.

The below describes the effect of said structure, when using notebook computer, the other end of heat pipe body heat pipe 3 is heated parts 11 if conduct most by the heat of CPU generation from heated sheet 1, and then in the inside of heat pipe 3, the pure water in the heated parts 11 rise occurrence temperature and evaporate.CPU is cooled by this heat of evaporation, and presses liter in the inner vapor of heated parts 11, and an end that flows to heat pipe 3 thereby the higher steam of temperature passes the second runner 18 is radiating part 12.Thermally coupled on radiating part 12 have fin 2, owing to pass this fin 2 from the wind of air-supply arrangement, thus the steam that arrives the inside of radiating part 12 is cooled and condensation, and condensation heat sheds from radiating part 12.This effect lasts till between heated parts 11 and the radiating part 12 that without till the temperature difference by the capillarity that is produced by copper corpus fibrosum 8, thereby the pure water of heat pipe 3 inside passes the first flow 17 in the copper corpus fibrosum 8 and flows to heated parts 11 from radiating part 12.

Although in this a series of cool cycles, radiating part 12 places that are being cooled by fin 2, owing to the condensation of steam is detained pure water is arranged, and at heated parts 11 places that are subject to from the heat of CPU, evaporating pure water, but because the stronger capillarity of the copper corpus fibrosum 8 that forms by fine fiber copper cash 24 is linked together, thereby no matter which kind of radiator unit is in posture is set, all can be under the condition that is not affected by gravity, to be transported to reliably heated parts 11 at the pure water of radiating part 12 places condensation, and the pure water that arrives heated parts 11 also can keep not the flow of the degree that can exhaust owing to evaporation.Therefore, can access the heat pipe 3 of the excellence of the conveying function that is difficult for the forfeiture pure water.

Moreover, in the manufacture process of heat pipe 3, particularly in order to improve the close property of heat pipe 3 and copper corpus fibrosum 8, and when by sintering copper corpus fibrosum 8 being filled on the inwall of heat pipe 3, when pure water passes the first flow 17 in the copper corpus fibrosum 8 and is delivered to heated parts 11 from radiating part 12, heat will promptly conduct to heat pipe 3 from copper corpus fibrosum 8, thereby can efficiently heat be dispersed into the outside of heat pipe 3.Therefore, can keep preferably the heat conductivity between heat pipe 3 and the copper corpus fibrosum 8, thereby optimize the thermal resistance of body 3.

And, when as the capillary pipe structure in the heat pipe 3, and be configured to unidirectional mode with copper cash 24 along the direction as the length direction of heat pipe 3, when copper corpus fibrosum 8B shown in Figure 7 being filled on the inwall of heat pipe 3, then can with at the pure water of radiating part 12 places condensation along the length direction of heat pipe 3 and be transported to glibly heated parts 11.Therefore, can access the heat pipe 3 of the excellence of the conveying function that is difficult for the forfeiture pure water.

And, be close to the inwall of heat pipe 3 in order to make copper corpus fibrosum 8, except described sintering, also can adopt following method, that is, copper corpus fibrosum 8 is pressed in heat pipe 3, or utilizes such as this press tool of helical spring analog, and from the inboard of heat pipe 3 to the inwall pushing copper corpus fibrosum 8 of heat pipe 3, and the part of copper corpus fibrosum 8 is welded to be engaged in method on the inwall of heat pipe 3.

Moreover, the filling of the copper corpus fibrosum 8 that is undertaken by sintering is to implement in the following way, namely, copper corpus fibrosum 8 is inserted in the heat pipe 3, and be close in a part that makes this copper corpus fibrosum 8 under the state on the inwall of heat pipe 3, under the gaseous environment of vacuum or inert gas, apply be lower than 900 ℃～be lower than 1000 ℃ heat, thus copper corpus fibrosum 8 is burnt till.Although being seated in the two ends of opposite heat tube 3, the sintering of this copper corpus fibrosum 8 carries out carrying out before the necking down processing processing, but also can be after for example only an end of opposite heat tube 3 have carried out necking down processing processing, carry out the sintering filling of copper corpus fibrosum 8, and then the other end of opposite heat tube 3 carries out necking down processing processing.

As indicated above, in the radiator unit of present embodiment, will fill in as the copper cash 24 of the fine fiber that produces capillarity the inside as the heat pipe 3 of body.

In this situation, although the pure water that has as circulation fluid is detained in the distolateral condensation owing to steam at heat pipe 3, and in another distolateral evaporating pure water of heat pipe 3, but because the stronger capillarity of fine copper cash 24, thereby can under the condition of the impact that is not subjected to gravity, carry pure water, and owing to can keep can not causing because of the evaporation of pure water the flow of the degree that pure water exhausts, therefore being difficult for forfeiture is the conveying function of the pure water of radiator unit as cooler.

Moreover, in the present embodiment, particularly in the direction along the length direction that becomes heat pipe 3, will be filled on the inwall of heat pipe 3 by the copper corpus fibrosum 8 as corpus fibrosum that unidirectional copper cash 24 consists of by sintering.

In this case, owing to along the length direction of heat pipe 3 the copper corpus fibrosum 8 that is made of unidirectional copper cash 24 is loaded, so pure water is glibly in the flows lengthwise of heat pipe 3, thus the conveying function of more difficult forfeiture pure water.And, owing to by sintering copper corpus fibrosum 8 is filled on the inwall of heat pipe 3, thereby can keep preferably heat conductivity between heat pipe 3 and the copper corpus fibrosum 8, optimize thus the thermal resistance of body 3.

Moreover, as Change Example, although the inwall of heat pipe 3 shown in Figure 5 is formed by the round and smooth curved surface 16 without convex-concave, but also can be as shown in Figure 8 like this, a plurality of groove 19 adequate reliefs are formed on the whole circumference of inwall of heat pipe 3, and with this groove 19 and copper corpus fibrosum 8 as the capillary pipe structure of heat pipe 3 inside and arrange.Each groove 19 arranges in the continual mode in centre continuously from the end to end of heat pipe 3, and and copper corpus fibrosum 8 inner common second runners 18 that form.Copper corpus fibrosum 8 is preferred by sintering, and fills on the inwall of heat pipe 3 in the mode of the inboard of being close to groove 19.Even in this Change Example, also adopt following structure, namely, it is the one party among unidirectional copper corpus fibrosum 8B of a direction with the orientation determination of the uncertain direction-free copper corpus fibrosum 8A of the direction of copper cash shown in Figure 6 24 and copper cash 24 shown in Figure 7, fill in the structure on the inwall of heat pipe 3, in the situation of copper corpus fibrosum 8B, in order to improve its capillarity, and copper cash 24 is configured in the mode along the length direction marshalling of heat pipe 3.

Because groove 19 is pre-arranged under the state with the exploitation of the two ends of heat pipe 3, so the manufacture method of heat pipe 3 and above-mentioned manufacture method do not change.In the heat pipe 3 under completion status shown in Figure 4, except the stronger capillarity of above-mentioned copper corpus fibrosum 8, the capillarity of groove 19 is also had an effect, thereby can will be transported to reliably heated parts 11 along the length direction of heat pipe 3 at the pure water of radiating part 12 places condensation.

Fig. 9 and Figure 10 illustrate respectively copper corpus fibrosum 8B are filled in the heat pipe 3, and copper corpus fibrosum 8 has been carried out sintering state afterwards.By these figure as can be known, copper corpus fibrosum 8B is close to by burning till, and is formed between the

groove

19,19 of adjacency and from the outstanding a plurality of protuberances 20 of the inwall of heat pipe 3, thereby improves heat conductivity from from copper corpus fibrosum 8B to heat pipe 3.Moreover, owing to not make copper cash 24 enter mode in the part of groove 19, copper corpus fibrosum 8B is filled in the heat pipe 3, the therefore true sufficient conveying capacity of 19 pairs of pure water of groove.

In this Change Example as above, at the inwall formation groove 19 of heat pipe 3, and the mode to be close to, will be filled in by the copper corpus fibrosum 8 of the corpus fibrosum that consist of as the fine copper cash 24 that produces capillarity the inboard of this groove 19.

In this case, although the pure water that has as circulation fluid is detained in the distolateral condensation owing to steam at heat pipe 3, and in another distolateral evaporating pure water of heat pipe 3, but the capillarity owing to the groove 19 on the inwall that is formed at heat pipe 3, the in addition stronger capillarity of fine copper cash 24, thereby can be under the condition of the impact that is not subject to gravity, reliably pure water is carried, and owing to can keep fully can not causing because of the evaporation of pure water the flow of the degree that pure water exhausts, therefore more difficult forfeiture is as the conveying function of the pure water of radiator unit.And, owing to use the peristome of copper cash 24 covering grooves 19, thus capillarity obtains tremendous raising, can improve thus the performance of radiator unit.

Moreover, in this Change Example, also can along the direction of the length direction that becomes heat pipe 3, by sintering the copper corpus fibrosum 8B that is made of unidirectional copper cash 24 be loaded.

In this case, owing to along the direction of the length direction that becomes heat pipe 3 the copper corpus fibrosum 8B that is made of unidirectional copper cash 24 is loaded, so pure water is glibly in the flows lengthwise of heat pipe 3, thus the conveying function of more difficult forfeiture pure water.And, owing to by sintering copper corpus fibrosum 8B is seated on the groove 19 of the inwall that is formed at heat pipe 3, thereby can keep preferably heat conductivity between heat pipe 3 and the copper corpus fibrosum 8B, optimize thus the thermal resistance of body 3.

Below, with reference to Fig. 1～Fig. 4 and Figure 11～Figure 13, the related radiator unit of the second embodiment of the present invention is described.And, be marked with identical symbol for the part identical with the first above-mentioned embodiment, and for avoiding repetition to do one's utmost omitting the explanation to same section.

In Figure 11, illustrate the cutaway view on the heat pipe 3 and direction length direction quadrature among Fig. 4.In the figure, a plurality of groove 19 adequate reliefs are formed on this circumference of inwall of heat pipe 3.On the other hand, be woven into mesh-shape in order to form cylindrical shell as the copper fiber 28 of fiber, thereby form cylindrical body 10.The cylindrical body 10 that forms by many copper fibers 28 is in the mode of the inboard of being close to groove 19, is loaded to be accommodated in the heat pipe 3.

Be the cylindrical body 10 and the end to end of each groove 19 from heat pipe 3 of capillary pipe structure, arrange continuously in the continual mode in centre.Thus, be respectively arranged with first flow 17 and the second runner 18 in the inside of heat pipe 3, described first flow 17 is formed in cylindrical body 10 and each groove 19, and the pure water as circulation fluid (not shown) in radiating part 12 places condensation is moved towards heated parts 11, described the second runner 18 is formed in the central area of the heat pipe cavity 4 that is surrounded by cylindrical body 10, and the steam in the evaporation of heated parts 11 places is moved towards radiating part 12.

Moreover, in the present embodiment, also the part of copper fiber 28 can be sintered in, be formed between the

groove

19,19 of adjacency, and from the outstanding a plurality of protuberances 20 of the inwall of heat pipe 3.In this case, by the sintering to copper fiber 28, thereby copper fiber 28 is fixed with the state of being close at the inwall of the inboard of groove 19 and heat pipe 3.

In order to make heat pipe 3 as shown in Figure 3, at first, the end (or other end) from the heat pipe 3 of having opened two ends loads in the mode of being close to protuberance 20 in the inboard of groove 19 cylindrical body 10 that is made of above-mentioned copper fiber 28.Then, by forging and pressing processing one end of heat pipe 3 is tied tight and necking down, further, seal this necking part by the Tig welding, thereby form sealing 5.Moreover the other end of heat pipe 3 is also tied tight and necking down by forging and pressing processing, and forms as the mouth of pipe that is used for carrying out the injection of pure water and vacuumizes.Then, implement pure water to the injection of the inside of heat pipe 3 from this mouth of pipe, and vacuumize, seal this spout part by the Tig welding again, thereby form sealing 6.At this time point, the inside of heat pipe 3 is sealed in the mode of cutting off with extraneous air, thereby has obtained the as shown in Figure 4 heat pipe 3 at the two ends of this heat pipe cavity 4 that has been sealed linearity by sealing 5,6.The state diagram of heat pipe 3 inside at this moment is shown among Figure 12 and Figure 13.Thereafter, as indicated above, form bend 21 by carry out bending machining in the appropriate position of heat pipe cavity 4, and the part of opposite heat tube cavity 4 or whole implementation extrusion process and form plat part 22, thereby the heat pipe 3 of required form as shown in Figure 3 obtained.

In above-mentioned a series of manufacturing process, although copper fiber 28 is close to the inboard of the groove 19 that is seated on the inwall that is formed at heat pipe 3, but thereby copper fiber 28 evenly is difficult for producing wavy owing to being woven in advance its radical of mesh-shape as used herein, and be formed the cylindrical body 10 that has kept tubular, therefore good to the operability of heat pipe 3 fillings thereafter, and can easily copper fiber 28 be arranged on the preposition place equably.Moreover the diameter of a copper fiber 28 is considered from the operability aspect to be advisable with tens μ m.

The below describes the effect of said structure, when using notebook computer, if the heat that is produced by CPU is heated parts 11 from the other end that heated sheet 1 is transmitted to heat pipe 3, then in the inside of heat pipe 3, the pure water in the heated parts 11 rises occurrence temperature and evaporates.CPU is cooled by this heat of evaporation, and presses liter in the inner vapor of heated parts 11, and an end that flows to heat pipe 3 thereby the higher steam of temperature passes the second runner 18 is radiating part 12.Thermally coupled on radiating part 12 have a fin 2, passes this fin 2 by the wind from air-supply arrangement, thereby the steam that arrives radiating part 12 inside is cooled and condensation, and condensation heat sheds from radiating part 12.This effect lasts till heated parts 11 and radiating part 12 without till the temperature difference, the capillarity of the pure water that is stranded in radiating part 12 by being produced by groove 19 and copper fiber 28, thus pass the first flows 17 in these grooves 19 and the copper fiber 28 and flow to heated parts 11.

In this a series of cool cycles, although because the condensation of steam is detained pure water is arranged at radiating part 12 places that are cooled by fin 2, and in the heated parts 11 place's evaporating pure water that are subject to from the heat of CPU, but in order to keep the function as radiator unit, and need above-mentioned capillarity stronger, no matter thereby which kind of is in posture is set, all can be under the condition of the impact that is not subjected to gravity, to be transported to reliably heated parts 11 at the pure water of radiating part 12 places condensation, and the flow of pure water need to be remained on the degree that pure water can not exhaust owing to evaporation.

Therefore, in the present embodiment, by stopping up the peristome of groove 19 by fine copper fiber 28 in the mode that centers on, thus the both sides that realize strengthening the capillarity in the heat pipe 3 and keep the flow that pure water flows.Moreover, by described copper fiber 28 is woven into mesh-shape, thereby copper fiber 28 can be arranged on equably pre-position in the heat pipe 3.Thus, thus the function of heat pipe 3 is difficult for the product that forfeiture becomes excellent performance.And, owing to use the cylindrical body 10 of copper fiber 28, therefore good to the operability of heat pipe 3 fillings, and cheap.

As indicated above, in the radiator unit of present embodiment, also will fill in as the copper fiber 28 of the fine fiber that produces capillarity the inside as the heat pipe 3 of body, particularly, on the inwall of heat pipe 3, form groove 19 here, and will fill in by the cylindrical body 10 that copper fiber 28 is woven into the tubular that mesh-shape forms the inboard of this groove 19.

In this case, capillarity by the groove 19 on the inwall that is formed at heat pipe 3, the in addition stronger capillarity of fine copper fiber 28, thereby can be under the condition of the impact that is not subjected to gravity, reliably pure water is carried, and owing to can fully keep can not causing because of the evaporation of pure water the flow of the degree that pure water exhausts, therefore being difficult for forfeiture is the conveying function of the pure water of radiator unit as cooler.Moreover copper fiber 28 is by being woven into mesh-shape, thereby can be arranged on equably the pre-position of heat pipe 3.And, owing to form cylindrical body 10 with copper corpus fibrosum 8, therefore good to the operability of heat pipe 3 fillings, and cheap.And, owing to use the peristome of copper fiber 28 covering grooves 19, thus capillarity obtains tremendous raising, can improve thus the performance of radiator unit.

Moreover, be preferably, following heat pipe 3 can be provided, that is, and by with the part of copper fiber 28 in the inboard sintering of groove 19 inwall at heat pipe 3, thereby easily from heat pipe 3 to copper fiber 28 heat by conductions, and then the heat pipe 3 of thermal resistance excellence.

Below, with reference to each accompanying drawing among Fig. 1～Fig. 4 and Figure 14～Figure 19 third embodiment of the invention is described.In addition, for the symbol identical with the common part mark of above-mentioned the first embodiment and the second embodiment, and do one's utmost to omit explanation to same section for fear of repetition.

In this embodiment, the internal structure of heat pipe 3 and the second embodiment are different.Specifically as shown in figure 14, use the plates 30 that form by sintered copper fiber 28, to replace the cylindrical body 10 that forms by braiding copper fiber 28.At this, copper fiber 28 also fills in the heat pipe cavity 4 of heat pipe 3 in the mode of the inboard of being close to groove 19.

Figure 15 and Figure 16 all illustrate the structure that is incorporated in plates 30 monomers in the heat pipe 3.Plates 30 are, a plurality of copper fibers 28 of marshalling on one direction that will be stratiform are processed as the plates shape by sintering, and in order to improve the capillarity of copper fiber 28, and the direction that makes copper fiber 28 is configured in the mode along the length direction marshalling of heat pipe 3.

In order to make heat pipe 3 as shown in figure 14, at first, from an end (or other end) of the heat pipe 3 of having opened two ends, make the consistent mode of direction of copper fiber 28 with the length direction along heat pipe 3, plates 30 are rolled into tubular and load.Figure 17 illustrates plates 30 is filled in state in the heat pipe 3 to a certain degree.Among the figure, middle arrow for blank is the filling direction of plates 30.And, all fill in plates 30 in the heat pipe 3 after, make plates 30 be close to protuberance 20 in groove 19 inboards, and the protuberance 20 of copper fiber 28 and heat pipe 3 be sintered together.

Then, by forging and pressing processing and an end of heat pipe 3 being tied tight and necking down, further, by the Tig welding necking part is sealed, thereby form sealing 5.Moreover the other end of heat pipe 3 is also tied tight and necking down by forging and pressing processing, and forms as the mouth of pipe that is used for carrying out the injection of pure water and vacuumizes.Then, carry out pure water to the injection of the inside of heat pipe 3 from this mouth of pipe, and vacuumize, seal this spout part by the Tig welding again, thereby form sealing 6.At this time point, the inside of heat pipe 3 is sealed in the mode of cutting off with extraneous air, thus obtained as shown in Figure 4 sealed the heat pipe 3 at two ends of the heat pipe cavity 4 of linearity by sealing 5,6.The state diagram of at this moment heat pipe 3 inside is shown among Figure 18.Thereafter, such as mentioned before, form bend 21 by implement bending machining in the appropriate position of heat pipe cavity 4, and the part of opposite heat tube cavity 4 or whole implementation extrusion process and form plat part 22, thereby the heat pipe 3 of required form as shown in Figure 3 obtained.

The below describes the effect of described structure, when using notebook computer, if the heat that is produced by CPU is heated parts 11 from the other end that heated sheet 1 is transmitted to heat pipe 3, then in the inside of heat pipe 3, the pure water in the heated parts 11 will produce the temperature rising and evaporate.CPU is cooled by this heat of evaporation, and presses liter in the inner vapor of heated parts 11, and an end that flows to heat pipe 3 thereby the higher steam of temperature passes the second runner 18 is radiating part 12.Thermally coupled on radiating part 12 have a fin, passes this fin by the wind from air-supply arrangement, thereby the steam that arrives radiating part 12 inside is cooled and condensation, and condensation heat sheds from radiating part 12.This effect lasts till heated parts 11 and radiating part 12 without till the temperature difference, the capillarity of the pure water that is stranded in radiating part 12 by being produced by groove 19 and copper fiber 28, thus pass the first flows 17 in these grooves 19 and the copper fiber 28 and flow to heated parts 11.

In this a series of cool cycles, although because the condensation of steam is detained pure water is arranged at radiating part 12 places that are cooled by fin 2, and in the heated parts 11 place's evaporating pure water that are subject to from the heat of CPU, but for described capillarity is strengthened, no matter thereby which kind of is in posture is set, all can be under the condition of the impact that is not subjected to gravity, to be transported to heated parts 11 at the pure water of radiating part 12 places condensation reliably, and for the flow with pure water remains on the degree that the pure water that arrives heated parts 11 can all not exhaust owing to evaporation, and in the present embodiment, inwall at heat pipe 3 forms groove 19, and load copper fiber 28 in the inboard of this groove 19 in the mode of being close to protuberance 20, thereby the peristome of groove 19 be capped by copper fiber 28, and the capillarity that produces of heat pipe 3 interior grooves 19 obtains tremendous raising thus.Thus, can realize making the function of heat pipe 3 to be difficult for forfeiture, and the quality product that the performance of heat pipe 3 is significantly improved.

Moreover, in the present embodiment, in order to improve the capillarity in the described heat pipe 3, and the material of heat pipe 3 and copper fiber 28 all is chosen to be copper.And, by carrying out after plates 30 that sintering forms fill in the heat pipe cavity 4 of heat pipe 3 copper fiber 28, plates 30 and the protuberance 20 of heat pipe 3 are close to, and copper fiber 28 and protuberance 20 be sintered together, thereby can improve to greatest extent capillarity, and the thickness of heat pipe 3 and plates 30 is suppressed at Min..

Moreover, the problem of the operability that fractures etc. for fear of copper fiber 28, the wire diameter of copper fiber 28 is preferably more than the 20 μ m, and the upper limit of wire diameter is preferably the well width less than the peristome side of groove 19.Groove 19 is full of by liquid phase substantially, and the inboard of copper fiber 28 is mainly gas phase.And, because in the work of heat pipe 3, can not lack freely changing of these liquid and gas, so need liquid phase to move from the inside of the interior lateral slot 19 of copper fiber 28, and the gas phase of groove 19 can be to the medial movement of copper fiber 28.Therefore, the wire diameter of copper fiber 28 is particularly important less than the condition degree of the well width of groove 19.

Figure 19 is the photo after the cross section of the heat pipe 3 after the flat processing of present embodiment is taken.Although this photo is not because the processing that the cross section cuts off is not good, and exist can't Visual Confirmation groove 19 the place, actually, the whole circumference in heat pipe 3 all can Visual Confirmation groove 19.

As indicated above, in the radiator unit of present embodiment, also will fill in as the copper fiber 28 of the fine fiber that produces capillarity the inside as the heat pipe 3 of body, particularly, at this, on the inwall of heat pipe 3, form groove 19, and copper fiber 28 is filled in the inboard of this groove 19.

So, capillarity by the groove 19 on the inwall that is formed at heat pipe 3, the in addition stronger capillarity of fine copper fiber 28, thereby can be under the condition of the impact that is not subjected to gravity, reliably pure water is carried, and owing to can keep fully can not causing because of the evaporation of pure water the flow of the degree that pure water exhausts, therefore being difficult for forfeiture is the conveying function of the pure water of radiator unit as cooler.And, owing to use the peristome of copper fiber 28 covering grooves 19, thus capillarity obtains tremendous raising, can improve thus the performance of radiator unit.

Moreover in the present embodiment, the material of heat pipe 3 and copper fiber 28 is made of copper.In this situation, owing to form the heat pipe 3 of groove 19 and the material of copper fiber 28 is copper equally, so capillarity becomes maximum, thereby can further improve the performance as radiator unit.

Moreover in the present embodiment, it is above and less than the well width of this groove 19 that the wire diameter of copper fiber 28 is formed 20 μ m.In this situation, because the wire diameter of copper fiber 28 is set as more than the 20 μ m, thereby can avoid the operational problem of copper fiber 28 fractures etc.Moreover, if the wire diameter of copper fiber 28 less than the well width of this groove 19, then can realize freely changing of gas phase and liquid phase, thereby can further improve the performance as radiator unit between groove 19 and copper fiber 28.

In the present embodiment, to fill in as the copper fiber 28 of the fine fiber that produces capillarity the inside as the heat pipe 3 of body, particularly, at this, inwall at heat pipe 3 forms groove 19, and make the protuberance of being close to this groove 19 by copper fiber 28 being carried out plates 30 that sintering forms, be the protuberance 20 of heat pipe 3, and copper fiber 28 and groove 19 are sintered together.

So, capillarity by the groove 19 on the inwall that is formed at heat pipe 3, the in addition stronger capillarity of fine copper fiber 28, thereby can be under the condition of the impact that is not subjected to gravity, reliably pure water is carried, and owing to can keep fully can not causing because of the evaporation of pure water the flow of the degree that pure water exhausts, therefore more difficult forfeiture is the conveying function of the pure water of radiator unit as cooler.Moreover, it is close to by carrying out plates 30 that sintering forms to copper fiber 28 in advance after filling in the heat pipe cavity 4 of heat pipe 3, and plates 30 and protuberance 20 are sintered together, thereby can improve to greatest extent capillarity, and suppress to greatest extent thickness.And, owing to cover the peristome of groove 19 with copper fiber 28, thereby capillarity obtains tremendous raising, can improve thus the performance of radiator unit, and owing to by sintering copper fiber 28 filled on the groove 19 on the inwall that is formed on heat pipe 3, thereby can keep preferably the heat conductivity between heat pipe 3 and the copper fiber 28, optimize thus the thermal resistance of body 3.

And, in the present embodiment, owing to the direction along the length direction that becomes heat pipe 3, by sintering unidirectional copper fiber 28 is loaded, therefore pure water is swimmingly in the flows lengthwise of heat pipe 3, thus conveying function that can more difficult forfeiture pure water.

Below, with reference to each accompanying drawing among Fig. 1～Fig. 4, Figure 20～Figure 27, the related radiator unit of the 4th embodiment of the present invention is described.In addition, for the symbol identical with the common part of above-mentioned the first embodiment～the 3rd embodiment mark, and do one's utmost to omit explanation to common ground for fear of repetition.

In Figure 20, illustrate the cutaway view on the heat pipe 3 and direction length direction quadrature among Fig. 4.In the figure, the whole circumference at the inwall of heat pipe 3 has been formed uniformly a plurality of grooves 19.On the other hand, in the present embodiment, as nonwoven 42 fiber, that consisted of by the metallic fiber 41 of copper fiber etc. or this nonwoven 42 of sintering and the sintered sheet body 43 that obtains, be loaded in the mode of the inboard of being close to groove 19 and be accommodated in the heat pipe 3.

Be nonwoven 42 or the sintered sheet body 43 and the end to end of each groove 19 from heat pipe 3 of capillary pipe structure, arrange continuously in the continual mode in centre.Thus, be respectively equipped with first flow 17 and the second runner 18 in the inside of heat pipe 3, described first flow 17 is formed in nonwoven 42 or sintered sheet body 43 and each groove 19, and the pure water as circulation fluid (not shown) in radiating part 12 places condensation is moved towards heated parts 11, described the second runner 18 is formed in the central area of the heat pipe cavity 4 that is surrounded by nonwoven 42 or sintered sheet body 43, and the steam in the evaporation of heated parts 11 places is moved towards radiating part 12.

Figure 21 illustrates and is wound in corrugated board 44 grades and is mounted metallic fiber 41 under the state on the body.Metallic fiber 41 is drawn out from corrugated board 44, thereby forms as shown in figure 22 straight line fiber 45 and reticular fibre 46.By this straight line fiber 45 and reticular fibre 46 is superimposed, thereby produce the nonwoven 42 of the inside that can fill in heat pipe 3.Although general fiber plates are to be made into ordinate and horizontal line netted, but the nonwoven 42 in the present embodiment does not weave metallic fiber 41, but will be roughly on one direction evenly distributed long straight line fiber 45 and be shorter than this straight line fiber 45 and the reticular fibre 46 that disposes at random direction substantially superimposed equably, link together by these straight line fibers 45 and reticular fibre 46, thus the nonwoven 42 of formation plates shape.

The wire diameter of straight line fiber 45 and reticular fibre 46 is all in the scope of 10～200 μ m, more then more can form the heat pipe 3 with excellent performance for fine line diameter, more be that then the processing as metallic fiber 41 is easier thick line footpath, thereby more can realize the reduction of cost.Moreover, although the length of straight line fiber 45 is tens m when the making of nonwoven 42, be the length (mostly being about 180mm greatly) that cooperates each heat pipe 3 thereafter, and use the nonwoven 42 after the cutting.The length of reticular fibre 46 is in the scope of several mm～tens mm, according to the preparation method of nonwoven 42 and different.

Although nonwoven 42 shown in Figure 22 is after cutting out as suitable length, can fill in the heat pipe 3, but because under the state that directly uses, reticular fibre 46 breaks away from from straight line fiber 45 easily, therefore as shown in figure 23, can use nonwoven 42 is carried out sintering, thus the sintered sheet body 43 that straight line fiber 45 and reticular fibre 46 are bonded with each other.Figure 24 (a) is the photo of a side (reticular fibre 46 sides) of sintered sheet body 43, and Figure 24 (b) is the photo of the opposite side (straight line fiber 45 sides) of sintered sheet body 43.

In order to make heat pipe 3 as shown in Figure 3 with above-mentioned nonwoven 42, at first, from the end (or other end) of the heat pipe 3 of having opened two ends to cutting out the described nonwoven 42 for suitable size, with the inboard of the groove 19 on the inwall that is formed at heat pipe 3, the mode of being close on the wide as far as possible zone of protuberance 20 is loaded.At this, although nonwoven 42 makes the consistent mode of direction of straight line fiber 45 with the length direction along heat pipe 3, be rolled into tubular and fill in the inside of heat pipe 3, but compare with situation of metal fine being installed by fixture or loading netted fiber plates etc., close property between nonwoven 42 and the protuberance 20 is excellent, thereby capillarity obtains tremendous raising, and also is suitable for slimming.

Moreover, as indicated above, in that straight line fiber 45 and reticular fibre 46 is superimposed and after producing nonwoven 42, if this nonwoven 42 is carried out sintering, then become the sintered sheet body 43 that straight line fiber 45 and reticular fibre 46 are engaged.During for the heat pipe 3 made as shown in Figure 3 with this sintered sheet body 43, at first, from the end (or other end) of the heat pipe 3 of having opened two ends to cutting out the sintered sheet body 43 for suitable size, with the inboard of the groove 19 on the inwall that is formed at heat pipe 3, the mode of being close on the wide as far as possible zone of protuberance 20 is loaded.Figure 25 illustrates sintered sheet body 43 is filled in state in the heat pipe 3 to a certain degree.Among the figure, the arrow of intermediate blank is the filling direction of sintered sheet body 43.Although in this case, sintered sheet body 43 also makes the consistent mode of direction of straight line fiber 45 with the length direction along heat pipe 3, be rolled into tubular and fill in the inside of heat pipe 3, but compare with situation of metal fine being installed by fixture or loading netted fiber plates etc., the sintered sheet body 43 and the close property between the protuberance 20 that obtain from nonwoven 42 are excellent, thereby capillarity obtains tremendous raising, and also is suitable for slimming.

Nonwoven 42 or sintered sheet body 43 are being filled in heat pipe 3 in any case, all be after, tie tight and necking down by forging and pressing processing and with an end of heat pipe 3, further, seal this necking part by the Tig welding, thereby form sealing 5.Moreover the other end of heat pipe 3 is also tied tight and necking down by forging and pressing processing, and forms as the mouth of pipe that is used for carrying out the injection of pure water and vacuumizes.Then, implement pure water to the injection of the inside of heat pipe 3 from this mouth of pipe, and vacuumize, seal this spout part by the Tig welding again, thereby form sealing 6.At this time point, the inside of heat pipe 3 is sealed in the mode of cutting off with extraneous air, thereby has obtained the as shown in Figure 4 heat pipe 3 at the two ends of this heat pipe cavity 4 that has been sealed linearity by sealing 5,6.The state diagram of heat pipe 3 inside at this moment is shown among Figure 26 and Figure 27.Thereafter, as indicated above, form bend 21 by carry out bending machining in the appropriate position of heat pipe cavity 4, and the part of opposite heat tube cavity 4 or whole implementation extrusion process and form plat part 22, thereby the heat pipe 3 of required form as shown in Figure 3 obtained.

In described a series of manufacturing process, load by the mode that nonwoven 42 (or sintered sheet body 43) is formed at the protuberance 20 between the

groove

19,19 to be close to inner wall part at heat pipe 3, thereby the peristome of each groove 19 is capped by the nonwoven 42 with fine space, and the capillarity that produces of groove 19 obtains tremendous raising thus.And in order to improve to greatest extent this capillarity, the material of heat pipe 3 and nonwoven 42 all is chosen to be copper.Moreover, particularly, by using nonwoven 42 is carried out the sintered sheet body 43 that sintering obtains, thereby the inner wall part at heat pipe 3, and the close property between the protuberance 20 further improves, and reticular fibre 46 can not come off halfway yet, and the operability of loading thus nonwoven 42 becomes comparatively easy.

And, after nonwoven 42 (or sintered sheet body 43) is filled in the inside of heat pipe 3, when in order to make nonwoven 42 be close to protuberance 20, and with nonwoven 42 by the peripheral direction to heat pipe 3, when by sintering nonwoven 42 and protuberance 20 being bonded together again, can improve to greatest extent the capillarity of first flow 17, and in the extrusion process of implementing in order to form plat part 22 thereafter, also can avoid between nonwoven 42 and protuberance 20, producing the problem in gap.Moreover, compare with the product of existing sintered gold genotype on the inner wall part that copper powder is sintered in heat pipe 3, owing to can make nonwoven 42 not only evenly but also thin, therefore can form the thickness of the plat part 22 of the heat pipe 3 after the extrusion process thinner.

Because when sintered sheet body 43 (or nonwoven 42) is pressed to the peripheral direction of heat pipe 3, this sintered sheet body 43 is compressed, thereby the sintered sheet body 43 of the thin layer that is made of highdensity metallic fiber 41 can make the integral thickness attenuation of heat pipe 3, can become thus preferred optimal form when using.Because the sintered sheet body 43 in this situation is compared with woven wire, have high close property for the protuberance of heat pipe 3, and have high capillarity by high-density fiber, therefore the performance as heat pipe 3 significantly improves.

Moreover, sintered sheet body 43 in the heat pipe 3 is compared with existing sintering metal (copper powder sintered article), can form slim, its reason is, in the situation of sintering metal, need to be arranged at plug with the inboard of the heat pipe 3 of groove 19, and the inwall of this heat pipe 3 between the gap in load copper powder, and after sintered copper powder, extract plug, but copper powder will can not spread all over when reducing the gap, thereby can't make the thickness slimming of copper powder integral body.In fact, the thickness that fills in the nonwoven 42 behind the inside of heat pipe 3 is about 0.2～0.3mm, compares with the thickness (about 0.5～0.6mm) in the situation of sintered copper powder, can become below half.Further, because nonwoven 42 or sintered sheet body 43 in the present embodiment are formed the plates shape, therefore the fibre diameter of metallic fiber 41 is attenuated, thereby obtain fine space, can access thus the heat pipe 3 of the excellence of high capillarity as indicated above.

Figure 27 is for having carried out the photo after the shooting to the cross section of the heat pipe 3 after the flat processing of present embodiment.Not good and the place that can't Visual Confirmation groove 19 of the processing that the cross section cuts off although this photo exists, in fact, all can Visual Confirmation groove 19 on the whole circumference in heat pipe 3.Moreover, in contrast, the existing sectional view of the heat pipe 3 on the inwall that copper powder 60 is sintered in heat pipe cavity 4 that makes is shown among Figure 28.

Existing heat pipe 3 is difficult for arranging copper powder thinner and is even, and the space is also inhomogeneous.Therefore, in the water shortage of heat pipe 3 interior conveyings, thereby cause the possibility of function stop higher.On the other hand, since the heat pipe 3 of the second embodiment～the 4th embodiment except all have arrange copper fiber 28 thinner and uniform cylindrical body 10 or plates 30, also have the nonwoven 42 or the sintered sheet body 43 that are consisted of by metallic fiber 41, therefore can overcome such problem, thereby the function as heat pipe 3 is improved significantly.

As indicated above, in the radiator unit of present embodiment, also will fill in as the metallic fiber 41 of the fine fiber that produces capillarity the inside as the heat pipe 3 of body, particularly, on the inwall of heat pipe 3, form groove 19 here, and to by will be as metal straight line fiber 45 and the reticular fibre 46 superimposed nonwoven that form 42 of described metallic fiber 41, load to be close to as the mode of the protuberance 20 of the protuberance of groove 19.

In this case, capillarity by the groove 19 on the inwall that is formed at heat pipe 3, the in addition stronger capillarity of fine metallic fiber 41, thereby can be under the condition of the impact that is not subjected to gravity, reliably pure water is carried, and owing to can fully keep can not causing because of the evaporation of pure water the flow of the degree that pure water exhausts, therefore more difficult forfeiture is the conveying function of the pure water of radiator unit as cooler.Moreover, because by carrying out the inside that the superimposed nonwoven that forms 42 fills in heat pipe 3 to straight line fiber 45 and reticular fibre 46, thereby the close property between nonwoven 42 and the protuberance 20 is good, and the peristome of groove 19 is capped by the nonwoven 42 with fine gap, therefore capillarity obtains tremendous raising, can improve thus the performance of radiator unit, and pass through thinner nonwoven 42, thereby can realize the slimming of heat pipe 3.And, owing to by sintering nonwoven 42 filled on the groove 19 on the inwall that is formed on heat pipe body 3, thereby can keep preferably heat conductivity between heat pipe body 3 and the nonwoven 42, optimize thus the thermal resistance of heat pipe body 3.

Moreover, can be to being that the mode of protuberance 20 is loaded as the sintered sheet body 43 of following plates with the protuberance of being close to groove 19, described plates carry out sintering by the nonwoven 42 that superimposed straight line fiber 45 and reticular fibre 46 are consisted of, thereby straight line fiber 45 and reticular fibre 46 are bonded together and form.

Because in this case, the also capillarity by the groove 19 on the inwall that is formed at heat pipe 3, the in addition stronger capillarity of fine metallic fiber 41, thereby can be under the condition of the impact that is not subjected to gravity, reliably pure water is carried, and owing to can fully keep can not causing because of the evaporation of pure water the flow of the degree that pure water exhausts, therefore being difficult for forfeiture is the conveying function of the pure water of radiator unit as cooler.Moreover, by carrying out the inside that the resulting sintered sheet body 43 of sintering fills in heat pipe 3 to the nonwoven 42 that superimposed straight line fiber 45 and reticular fibre 46 consist of, thereby the close property between sintered sheet body 43 and the protuberance 20 is more good, and owing to the peristome of groove 19 is capped by the sintered sheet body 43 with fine space, therefore capillarity obtains tremendous raising, can improve thus the performance of radiator unit, and pass through thinner sintered sheet body 43, thereby can realize the slimming of heat pipe 3.And, owing to by sintering sintered sheet body 43 filled on the groove 19 on the inwall that is formed on heat pipe body 3, thereby can keep preferably heat conductivity between heat pipe body 3 and the sintered sheet body 43, optimize thus the thermal resistance of heat pipe body 3.

Moreover the present invention not only is defined in above-mentioned embodiment, can carry out various changes in the scope that does not break away from main idea of the present invention.For example,, except PC, can also be installed in the various machines that need cooling at the cooler shown in each embodiment, also the sealing of the circulation fluid beyond the pure water can be accommodated in the inside of heat pipe 3.In addition, although identical in each embodiment, the material of heat pipe 3, copper corpus fibrosum 8, cylindrical body 10, plates 30, nonwoven 42, sintered sheet body 43 has the larger pyroconductivity of carrying for heat, thereby can not have hydrophily by corrosion with respect to the water of enclosing usefulness, and be fit to burn till usefulness, and considering to form pipe and fiber with same material during as condition, copper is the most suitable, but according to the purposes as cooler, also can be for such as other the metal such as aluminium, SUS (stainless steel).And, be preferably, the wire diameter of copper cash 24 or metallic fiber 41 is made as well width less than groove 19.Its reason is with illustrated identical in the 3rd embodiment.

Symbol description

3-heat pipe (body)

8-8A, 8B copper corpus fibrosum (corpus fibrosum)

The 10-cylindrical body

The 19-groove

20-protuberance (protuberance)

24-copper cash (fiber)

28-copper fiber (fiber)

The 30-plates

41-metallic fiber (fiber)

The 42-nonwoven

43-sintered sheet body (plates)

45-straight line fiber

The 46-reticular fibre

Claims

1. a cooler is characterized in that, the fine fiber that produces capillarity is filled in the inside of body.

2. cooler as claimed in claim 1 is characterized in that, along the direction of the length direction that becomes described body, will be filled on the inwall of this body by the corpus fibrosum that unidirectional described fiber consists of by sintering.

3. cooler as claimed in claim 1 is characterized in that, forms groove at the inwall of described body, and will be filled in by the corpus fibrosum that described fiber consists of the inboard of this groove in the mode of being close to.

4. cooler as claimed in claim 3 is characterized in that, along the length direction of described body, by sintering the corpus fibrosum that is made of unidirectional described fiber is loaded.

5. cooler as claimed in claim 1 is characterized in that, forms groove at the inwall of described body, and will fill in by the cylindrical body that described fibrage ramify shape forms the inboard of this groove.

6. cooler as claimed in claim 1 is characterized in that, forms groove at the inwall of described body, and described fiber is filled in the inboard of this groove.

7. cooler as claimed in claim 6 is characterized in that, the material of described body and described fiber is made of copper.

8. such as claim 6 or 7 described coolers, it is characterized in that the wire diameter of described fiber is more than 20 μ m, and less than the well width of described groove.

9. cooler as claimed in claim 1 is characterized in that, forms groove at the inwall of described body, and makes by described fiber being carried out the plates that sintering forms and be close on the protuberance of this groove, and described fiber and described groove are sintered together.

10. cooler as claimed in claim 1, it is characterized in that, inwall at described body forms groove, and will fill on the protuberance of described groove in the mode of being close to by the superimposed nonwoven that forms as metal straight line fiber and the reticular fibre of described fiber.

11. cooler as claimed in claim 1, it is characterized in that, inwall at described body forms groove, and fill in plates on the protuberance of described groove in the mode of being close to, described plates are by carrying out sintering to the superimposed nonwoven that forms as metal straight line fiber and the reticular fibre of described fiber, thereby described straight line fiber and described reticular fibre are bonded together.