CN102853699B - Cooler - Google Patents

Abstract

A kind of cooler, capillarity is not by force thus by the impact of gravity, and the flow of circulation fluid is also sufficient thus not easily produce the decline of conveying function.Edge becomes the direction of the length direction of heat pipe (3), unidirectional copper corpus fibrosum (8) is filled on the inwall of this heat pipe (3) by sintering.Thus, by the strong capillarity of fine copper corpus fibrosum (8), thus can not reliably carry pure water by the impact of gravity, and due to the flow of the degree that pure water will be made to exhaust because of pure evaporation of water can be kept, therefore also not easily lose the conveying function of the pure water as cooler.Moreover owing to loading unidirectional copper corpus fibrosum (8) along the direction of the length direction becoming heat pipe (3), therefore pure water is swimmingly in the flows lengthwise of heat pipe (3), thus more not easily loses the conveying function of pure water.And, owing to copper corpus fibrosum (8) being filled on the inwall of heat pipe (3) by sintering, thus well can keep the heat conductivity of heat pipe (3) and copper corpus fibrosum (8), optimize the thermal resistance of heat pipe (3) thus.

Description

Cooler

Technical field

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

Background technology

All the time, known to following cooler, namely, by groove is formed on the inwall of body, or copper powder is sintered on the inwall of body, thus utilize the capillarity that these grooves or copper powder have, and the cooler (for example, referring to patent document 1) that the circulation fluid in the condensation of heat unit place is carried to heated parts.

At first technical literature

Patent document

Patent document 1: Japanese Unexamined Patent Publication 2006-284020 publication

Summary of the invention

Invent problem to be solved

But, in existing structure, circulation fluid is delivered to the function of heated parts and insufficient from heat unit.That is, be formed at by groove in the structure on the inwall of body, capillarity is more weak, thus arranges posture according to radiator, sometimes by the impact of gravity, and causes the conveying function of circulation fluid to stop.Moreover, copper powder is being sintered in the structure on the inwall of body, there is following shortcoming, namely, the flow of circulation fluid is insufficient, thus cause the conveying function of circulation fluid easily to decline, or have to strengthen the amount of copper powder in order to the flow obtaining sufficient circulation fluid, thus cause device to become large, become heavy.

Therefore, point, the object of the invention is in view of the above problems, provides a kind of capillarity comparatively strong thus can not be subject to the impact of gravity, and the flow of circulation fluid is sufficient thus not easily produce the cooler of the decline of conveying function.

For solving the method for problem

In technical scheme 1 of the present invention, although to be detained due to the condensation of steam in the end side of body and to have circulation fluid, and in another side circulation fluid evaporation of body, but by the stronger capillarity of fine fiber, thus can under the condition not by the impact of gravity, circulation fluid is carried, and due to the flow of the degree that will circulation fluid be caused because of the evaporation of circulation fluid to exhaust can be kept, therefore also not easily loses the conveying function of the circulation fluid as cooler.

In technical scheme 2 of the present invention, because the direction along the length direction as body is loaded the corpus fibrosum be made up of unidirectional fiber, therefore circulation fluid is swimmingly in the flows lengthwise of body, thus the conveying function of circulation fluid is more not easily lost.And, owing to filling on the inwall of body by sintering by corpus fibrosum, thus the heat conductivity between body and corpus fibrosum can be kept preferably, optimize the thermal resistance of body thus.

In technical scheme 3 of the present invention, by being formed at the capillarity of the groove on the inwall of body, the stronger capillarity of in addition fine fiber, thus can under the condition not by the impact of gravity, reliably circulation fluid is carried, and due to the flow of the degree that will circulation fluid be caused to exhaust because of the evaporation of circulation fluid can be kept fully, therefore also more not easily lose the conveying function of the circulation fluid as cooler.And due to the opening portion with fiber-covered groove, thus capillarity obtains tremendous raising, can improve the performance of cooler thus.

In technical scheme 4 of the present invention, because the direction along the length direction as body is loaded the corpus fibrosum be made up of unidirectional fiber, therefore circulation fluid is swimmingly in the flows lengthwise of body, thus the conveying function of circulation fluid is more not easily lost.Further, owing to being filled in by corpus fibrosum on the groove that is formed on the inwall of body by sintering, thus the heat conductivity between body and corpus fibrosum can be kept preferably, optimize the thermal resistance of body thus.

In technical scheme 5 of the present invention, by being formed at the capillarity of the groove on the inwall of body, the stronger capillarity of in addition fine fiber, thus can under the condition not by the impact of gravity, reliably circulation fluid is carried, and due to the flow of the degree that will circulation fluid be caused to exhaust because of the evaporation of circulation fluid can be kept, therefore also more not easily lose the conveying function of the circulation fluid as cooler.Moreover fiber by being woven into mesh-shape, thus can be arranged on the precalculated position in body equably.And owing to using processbearing astrocyte cylindrical body, the operability therefore to body filling is good thus cheap.Further, due to the opening portion with fiber-covered groove, thus capillarity obtains tremendous raising, can improve the performance of cooler thus.

In technical scheme 6 of the present invention, by being formed at the capillarity of the groove on the inwall of body, the stronger capillarity of in addition fine fiber, thus can under the condition not by the impact of gravity, reliably circulation fluid is carried, and due to the flow of the degree that will circulation fluid be caused to exhaust because of the evaporation of circulation fluid can be kept fully, therefore also more not easily lose the conveying function of the circulation fluid as cooler.And due to the opening portion with fiber-covered groove, thus capillarity obtains tremendous raising, can improve the performance of cooler thus.

In technical scheme 7 of the present invention, because the formation body of groove and the material of fiber are identical copper, therefore capillarity becomes maximum, thus can improve the performance of cooler further.

In technical scheme 8 of the present invention, by the wire diameter of fiber is set in more than 20 μm, thus the operational problem of fiber breakage etc. can be avoided.Moreover, when the wire diameter of fiber is less than the well width of groove, freely changing of gas phase and liquid phase can be realized between groove and fiber, thus the performance of cooler can be improved further.

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

In technical scheme 10 of the present invention, by being formed at the capillarity of the groove on the inwall of body, the stronger capillarity of in addition fine fiber, thus can under the condition not by the impact of gravity, reliably circulation fluid is carried, and due to the flow of the degree that will circulation fluid be caused to exhaust because of the evaporation of circulation fluid can be kept fully, therefore also more not easily lose the conveying function of the circulation fluid as cooler.Moreover, the inside of body is filled in by the non-woven fabrics superimposed straight fibres and reticular fibre formed, thus close property between non-woven fabrics and protuberance is good, and, because the opening portion of groove is by the non-textile mulch with fine space, therefore capillarity obtains tremendous raising, can improve the performance of cooler thus, and by thinner non-woven fabrics, thus also can realize the slimming of body.And, owing to being filled in by non-woven fabrics on the groove that is formed on the inwall of body by sintering, thus the heat conductivity between body and non-woven fabrics can be kept preferably, optimize the thermal resistance of body thus.

In technical scheme 11 of the present invention, by being formed at the capillarity of the groove on the inwall of body, the stronger capillarity of in addition fine fiber, thus can under the condition not by the impact of gravity, reliably circulation fluid is carried, and due to the flow of the degree that will circulation fluid be caused to exhaust because of the evaporation of circulation fluid can be kept fully, therefore also more not easily lose the conveying function of the circulation fluid as cooler.Moreover, by sintering forming non-woven fabrics to superimposed straight fibres and reticular fibre the inside that obtained plates fill in body, thus close property between plates and protuberance is good, and, because the opening portion of groove is covered by the plates with fine space, therefore capillarity obtains tremendous raising, can improve the performance of cooler thus, and by thinner plates, thus also can realize the slimming of body.And, owing to being filled in by plates on the groove that is formed on the inwall of body by sintering, thus the heat conductivity between body and plates can be kept preferably, optimize the thermal resistance of body thus.

The effect of invention

According to the invention of technical scheme 1, capillarity can be provided comparatively strong thus the impact of strong gravity can not be subject to, and the flow of circulation fluid also fully thus not easily produce the cooler of the decline of conveying function.

According to the invention of technical scheme 2, more not easily can lose the conveying function of circulation fluid, and the thermal resistance of body can be optimized.

According to the invention of technical scheme 3, capillarity can be provided comparatively strong thus the impact of strong gravity can not be subject to, and the flow of circulation fluid also fully thus not easily produce the cooler of the decline of conveying function.Moreover capillarity obtains tremendous raising, the performance of cooler can be improved thus.

According to the invention of technical scheme 4, more not easily can lose the conveying function of circulation fluid, and the thermal resistance of body can be optimized.

According to the invention of technical scheme 5, capillarity can be provided comparatively strong thus the impact of strong gravity can not be subject to, and the flow of circulation fluid also fully thus not easily produce the cooler of the decline of conveying function.Moreover, the cooler that the operability of loading in body is good thus cheap can be provided, and capillarity obtains tremendous raising, can improve the performance of cooler thus.

According to the invention of technical scheme 6, capillarity can be provided comparatively strong thus the impact of strong gravity can not be subject to, and the flow of circulation fluid also fully thus not easily produce the cooler of the decline of conveying function.Moreover capillarity obtains tremendous raising, the performance of cooler can be improved thus.

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

According to the invention of technical scheme 8, freely changing of gas phase and liquid phase can be realized, thus the performance of cooler can be improved further.

According to the invention of technical scheme 9, capillarity can be provided comparatively strong thus the impact of strong gravity can not be subject to, and the flow of circulation fluid also fully thus not easily produce the cooler of the decline of conveying function.Moreover, capillarity can be improved to greatest extent, and suppress thickness to greatest extent.And capillarity obtains tremendous raising, the performance of cooler can be improved thus, and the thermal resistance of body can be optimized.

According to the invention of technical scheme 10, capillarity can be provided comparatively strong thus the impact of strong gravity can not be subject to, and the flow of circulation fluid also fully thus not easily produce the cooler of the decline of conveying function.Moreover capillarity obtains tremendous raising, the performance of cooler can be improved thus, and the slimming of body can be realized, and the thermal resistance of body can be optimized.

According to the invention of technical scheme 11, capillarity can be provided comparatively strong thus the impact of strong gravity can not be subject to, and the flow of circulation fluid also fully thus not easily produce the cooler of the decline of conveying function.Moreover capillarity obtains tremendous raising, the performance of cooler can be improved thus, and the slimming of body can be realized, and the thermal resistance of body can be optimized.

Accompanying drawing explanation

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

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

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

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

Fig. 5 is the sectional view of the A-A line along 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 in one direction.

Fig. 8 is the same, for representing the sectional view of the A-A line along Fig. 4 of another example of cooler.

Fig. 9 is the same, for loading copper fiber and having carried out the partial sectional view after sintering to it.

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

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

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

Figure 13 is the same, for by Figure 12 amplify after photo.

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

Figure 15 is the same, is the stereoscopic photo of plates be made up of 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, for the photo after taking has been carried out in the cross section of the major part of opposite heat tube.

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

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

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

Figure 22 is the same, for representing the key diagram of the manufacture process of non-woven fabrics.

Figure 23 is the same, has carried out sintering the photo of the sintered sheet body obtained afterwards to non-woven fabrics for representing.

Figure 24 is the same, for by the photo after each surperficial partial enlargement of the reticular fibre side of sintered sheet body and straight fibres side.

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 the photo after taking has been carried out in the major part cross section of opposite heat tube.

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

Figure 28 is the same, for as with the contrasting of Figure 19 and Figure 27, and the photo after taking has been carried out to the global sections of heat pipe of the prior art.

Detailed description of the invention

Below, about the preferred embodiment of cooler of the present invention, to be described the main heating part of cooling PC (personal computer) and the radiator unit of CPU etc.

Fig. 1 and Fig. 2 illustrates the overall structure of the radiator unit as the cooler shared in each embodiment.In these figures, 1 for being close to the heated sheet made of copper that described CPU (not shown) is installed, 2 for forming multiple airway to divide and combine the fin that multiple metallic plates form, heated sheet 1 is close on the heated parts 11 of another side being connected to the heat pipe 3 be formed at as body, and fin 2 is close to and is connected on the radiating part 12 of the end side being formed at heat pipe 3.Never the wind that illustrated air-supply arrangement exports is through each airway of radiating part 12.

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

; when the radiator unit comprising heat pipe 3 is arranged at the low profile electronic machines such as notebook computer; because the installation space in low profile electronic machine limit; therefore under the state after the flat and bending machining shown in Fig. 3; be formed with bend 21 as required and in the appropriate position of heat pipe cavity 4, and be formed through the plat part 22 that the part of opposite heat tube cavity 4 or entirety carries out extrusion process and form.The surface defining the heat pipe cavity 4 of this plat part 22 becomes tabular substantially.In the present embodiment, by heated parts 11 and radiating part 12 place formation plat part 22 at least at heat pipe 3, and heated sheet 1 and fin 2 are installed on this plat part 22, thus improve heated sheet 1 and the close property between fin 2 and heat pipe 3.

Fig. 5 ~ Figure 10 illustrates the radiator unit involved by the first embodiment of the present invention.Particularly in Figure 5, the sectional view on the direction orthogonal to the longitudinal direction of the heat pipe 3 shown in Fig. 4 is illustrated.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 heat pipe 3 by sealing in the mode being close to this curved surface 16 as the copper corpus fibrosum 8 of the corpus fibrosum in capillary pipe structure.Copper corpus fibrosum 8 is filled to the other end from one end of heat pipe 3 continuously in mode continual in centre.Thus, first flow 17 and the second runner 18 is respectively equipped with in the inside of heat pipe 3, described first flow 17 is formed in copper corpus fibrosum 8, and make to move towards heated parts 11 at the pure water as circulation fluid (not shown) of radiating part 12 place's condensation, and described second runner 18 will be formed in the region that surrounded by copper corpus fibrosum 8, and make to move towards radiating part 12 at the steam of heated parts 11 place evaporation.

Fig. 6 and Fig. 7 illustrates the outward appearance of copper corpus fibrosum 8 monomer.The mode that copper corpus fibrosum 8A shown in Fig. 6 links together as the copper cash 24 of fiber at random using diameter multiple with several μm ~ tens μm and being formed, moreover, copper corpus fibrosum 8B shown in Fig. 7 is with the diameter with several μm ~ tens μm, and long compared with the copper cash of copper corpus fibrosum 8A, the multiple copper cash 24 as fiber marshalling and the mode linked together and formed in stratiform and in one direction.And, adopt following structure, that is, preferably by sintering, the direction of uncertain for the direction of copper cash 24 direction-free copper corpus fibrosum 8A and copper cash 24 is defined as the one party in unidirectional copper corpus fibrosum 8B in a direction, be close to fill in heat pipe 3 inwall on.Especially, copper corpus fibrosum 8B in order to improve its capillarity, and makes copper cash 24 be configured in the mode of the length direction marshalling along heat pipe 3.

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

Below the effect of said structure is described, when using notebook computer, if the heat produced by CPU conducts the other end and the heated parts 11 of most heat pipe body heat pipe 3 from heated sheet 1, then in the inside of heat pipe 3, occurrence temperature rises and evaporates by the pure water in heated parts 11.CPU by this heat of evaporation and be cooled, and presses liter in the inner vapor of heated parts 11, thus the higher steam of temperature passes the second runner 18 and flows to an end and the radiating part 12 of heat pipe 3.Thermally coupled on radiating part 12 have fin 2, and because the wind from air-supply arrangement is through this fin 2, thus the steam arriving the inside of radiating part 12 is cooled and condensation, and condensation heat sheds from radiating part 12.This effect lasts between heated parts 11 and radiating part 12 without temperature difference, by the capillarity produced by copper corpus fibrosum 8, thus the pure water of heat pipe 3 inside flows to heated parts 11 through the first flow 17 in copper corpus fibrosum 8 from radiating part 12.

Although in this series of cool cycles, at radiating part 12 place cooled by fin 2, be detained due to the condensation of steam and have pure water, and be subject to heated parts 11 place from the heat of CPU, evaporating pure water, but the stronger capillarity of the copper corpus fibrosum 8 formed owing to passing through fine fiber copper cash 24 to link together, thus no matter which kind of radiator unit is in arranges posture, all can under the condition be not affected by gravity, pure water in radiating part 12 place's condensation is reliably transported to heated parts 11, and the pure water arriving heated parts 11 also can keep the flow of the degree that can not exhaust due to evaporation.Therefore, it is possible to not easily lost the heat pipe 3 of the excellence of the conveying function of pure water.

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

And, when as the capillary pipe structure in heat pipe 3, and unidirectional mode is configured to using copper cash 24 along the direction of the length direction as heat pipe 3, when copper corpus fibrosum 8B shown in Fig. 7 is filled on the inwall of heat pipe 3, then can by radiating part 12 place's condensation pure water along heat pipe 3 length direction and be transported to heated parts 11 glibly.Therefore, it is possible to not easily lost the heat pipe 3 of the excellence of the conveying function of pure water.

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

Moreover, the filling of the copper corpus fibrosum 8 undertaken by sintering implements in the following way, namely, copper corpus fibrosum 8 is inserted in heat pipe 3, and under the state making a part for this copper corpus fibrosum 8 be close on the inwall of heat pipe 3, under the gaseous environment of vacuum or inert gas, apply lower than 900 DEG C ~ lower than the heat of 1000 DEG C, thus copper corpus fibrosum 8 is burnt till.Although the two ends that the sintering of this copper corpus fibrosum 8 is seated in opposite heat tube 3 carry out carrying out before necking down processing processes, but also can after such as only necking down processing process have been carried out in one end of opposite heat tube 3, 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 process.

As described above, in the radiator unit of present embodiment, the copper cash 24 of the fine fiber as generation capillarity is filled in the inside of the heat pipe 3 as body.

In this situation, although be detained in the end side of heat pipe 3 pure water had as circulation fluid due to the condensation of steam, and in another side evaporating pure water of heat pipe 3, but due to the stronger capillarity of fine copper cash 24, thus can carry pure water under the condition not by the impact of gravity, and due to the flow of the degree that pure water will be caused to exhaust because of pure evaporation of water can be kept, therefore not easily lose the conveying function of the pure water as cooler and radiator unit.

Moreover, in the present embodiment, particularly along the direction of length direction becoming heat pipe 3, by sintering, the copper corpus fibrosum 8 as corpus fibrosum be made up of unidirectional copper cash 24 is filled on the inwall of heat pipe 3.

In this case, because the length direction along heat pipe 3 loads the copper corpus fibrosum 8 be made up of unidirectional copper cash 24, therefore pure water is glibly in the flows lengthwise of heat pipe 3, thus more not easily loses the conveying function of pure water.And, owing to being filled in by copper corpus fibrosum 8 on the inwall of heat pipe 3 by sintering, thus the heat conductivity between heat pipe 3 and copper corpus fibrosum 8 can be kept preferably, optimize the thermal resistance of body 3 thus.

Moreover, as Change Example, although the inwall of the heat pipe 3 shown in Fig. 5 is formed by the round and smooth curved surface 16 without convex-concave, but also can as shown in Figure 8 like this, multiple groove 19 adequate relief is formed in the circumferentially whole of the inwall of heat pipe 3, and this groove 19 and copper corpus fibrosum 8 are arranged as the capillary pipe structure of heat pipe 3 inside.Each groove 19, from one end of heat pipe 3 to the other end, is arranged continuously in the continual mode in centre, and and copper corpus fibrosum 8 is inner jointly forms the second runner 18.Copper corpus fibrosum 8 preferably by sintering, and fills in the mode of the inner side being close to groove 19 on the inwall of heat pipe 3.Even if in this Change Example, also following structure is adopted, namely, the direction of the copper cash 24 shown in uncertain for the direction of the copper cash 24 shown in Fig. 6 direction-free copper corpus fibrosum 8A and Fig. 7 is defined as the one party in unidirectional copper corpus fibrosum 8B in a direction, fill in the structure on the inwall of heat pipe 3, when copper corpus fibrosum 8B, in order to improve its capillarity, and copper cash 24 is configured in the mode of the length direction marshalling along heat pipe 3.

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

Fig. 9 and Figure 10 respectively illustrates and is filled in heat pipe 3 by copper corpus fibrosum 8B, and the state after having carried out sintering to copper corpus fibrosum 8.From these figure, copper corpus fibrosum 8B is close to by burning till, and to be formed between adjacent groove 19,19 and from the outstanding multiple protuberances 20 of the inwall of heat pipe 3, thus improves the heat conductivity from copper corpus fibrosum 8B to heat pipe 3.Moreover, due to not make copper cash 24 enter mode in the part of groove 19, copper corpus fibrosum 8B is filled in heat pipe 3, therefore, it is possible to the sufficient conveying capacity of true groove 19 pairs of pure water.

In this Change Example as above, the inwall of heat pipe 3 forms groove 19, and in the mode be close to, the inner side of this groove 19 will be filled in by the copper corpus fibrosum 8 of the corpus fibrosum formed as the fine copper cash 24 producing capillarity.

In this case, although be detained in the end side of heat pipe 3 pure water had as circulation fluid due to the condensation of steam, and in another side evaporating pure water of heat pipe 3, but due to be formed at heat pipe 3 inwall on the capillarity of groove 19, the stronger capillarity of in addition fine copper cash 24, thus can under the condition of impact not being subject to gravity, reliably pure water is carried, and due to the flow of the degree that pure water will be caused to exhaust because of pure evaporation of water can be kept fully, therefore more not easily lose the conveying function of the pure water as radiator unit.And owing to covering the opening portion of groove 19 with copper cash 24, thus capillarity obtains tremendous raising, can improve the performance of radiator unit thus.

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

In this case, owing to loading along the direction of the length direction becoming heat pipe 3 the copper corpus fibrosum 8B be made up of unidirectional copper cash 24, therefore pure water is glibly in the flows lengthwise of heat pipe 3, thus more not easily loses the conveying function of pure water.And, owing to being seated on the groove 19 of the inwall being formed at heat pipe 3 by sintering by copper corpus fibrosum 8B, thus the heat conductivity between heat pipe 3 and copper corpus fibrosum 8B can be kept preferably, optimize the thermal resistance of body 3 thus.

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

In fig. 11, the sectional view on the direction orthogonal to the longitudinal direction of the heat pipe 3 in Fig. 4 is illustrated.In the figure, multiple groove 19 adequate relief be formed in the inwall of heat pipe 3 this circumferentially.On the other hand, the copper fiber 28 as fiber is woven into mesh-shape to form cylindrical shell, thus is formed as cylindrical body 10.The cylindrical body 10 formed by many copper fibers 28, to be close to the mode of the inner side of groove 19, to be loaded and to be accommodated in heat pipe 3.

Cylindrical body in capillary pipe structure 10 and each groove 19, from one end of heat pipe 3 to the other end, are arranged continuously in the continual mode in centre.Thus, first flow 17 and the second runner 18 is respectively arranged with in the inside of heat pipe 3, described first flow 17 is formed in cylindrical body 10 and each groove 19, and make to move towards heated parts 11 at the pure water as circulation fluid (not shown) of radiating part 12 place's condensation, described second runner 18 is formed in the central area of the heat pipe cavity 4 surrounded by cylindrical body 10, and makes to move towards radiating part 12 at the steam of heated parts 11 place evaporation.

Moreover, in the present embodiment, also a part for copper fiber 28 can be sintered in, be formed between adjacent groove 19,19, and from multiple protuberances 20 that the inwall of heat pipe 3 is given prominence to.In this case, by the sintering to copper fiber 28, thus copper fiber 28 is fixed with the state be close at the inwall of the inner side of groove 19 and heat pipe 3.

In order to manufacture heat pipe 3 as shown in Figure 3, first, from the one end (or other end) of heat pipe 3 having opened two ends, the cylindrical body 10 be made up of above-mentioned copper fiber 28 is loaded in the mode being close to protuberance 20 in the inner side of groove 19.Then, by forging and stamping processing, is tied tight and necking down in one end of heat pipe 3, further, welded by Tig and seal this necking part, thus form sealing 5.Moreover the other end of heat pipe 3 is also tied tight and necking down by forging and stamping processing, and formed as the injection for carrying out pure water and the mouth of pipe that vacuumizes.Then, implement the injection of pure water to the inside of heat pipe 3 from this mouth of pipe, and vacuumize, then welded by Tig and seal this spout part, thus form sealing 6.At this time point, the inside of heat pipe 3 is sealed in the mode cut off with extraneous air, thus obtains this heat pipe 3 being sealed the two ends of the heat pipe cavity 4 of linearity by sealing 5,6 as shown in Figure 4.The state diagram of heat pipe 3 inside is now shown in Figure 12 and Figure 13.Thereafter, as described above, by carrying out bending machining and form bend 21 in the appropriate position of heat pipe cavity 4, and a part for opposite heat tube cavity 4 or whole implementation extrusion process and form plat part 22, thus obtain the heat pipe 3 of required form as shown in Figure 3.

In above-mentioned a series of manufacturing process, although copper fiber 28 is close to the inner side of the groove 19 be seated on the inwall being formed at heat pipe 3, but copper fiber 28 is owing to being woven to mesh-shape in advance thus its radical evenly not easily produces wavy as used herein, and be formed the cylindrical body 10 maintaining tubular, therefore the operability thereafter to heat pipe 3 filling is good, and easily copper fiber 28 can be arranged on preposition place equably.Moreover the diameter of a copper fiber 28 is advisable from the viewpoint of operability with tens μm.

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

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

Therefore, in the present embodiment, by by fine copper fiber 28 with around mode block the opening portion of groove 19, thus realize the both sides of the capillarity that strengthens in heat pipe 3 and the flow that keeps pure water flowing.Moreover, by described copper fiber 28 is woven into mesh-shape, thus copper fiber 28 can be arranged on equably the pre-position in heat pipe 3.Thus, the function of heat pipe 3 is not easily lost thus is become the product of excellent performance.Further, owing to using the cylindrical body 10 of copper fiber 28, the operability therefore to heat pipe 3 filling is good, and cheap.

As described above, in the radiator unit of present embodiment, also the copper fiber 28 of the fine fiber as generation capillarity is filled in the inside of the heat pipe 3 as body, particularly, on the inwall of heat pipe 3, form groove 19 here, and the cylindrical body 10 of the tubular formed being woven into mesh-shape by copper fiber 28 fills in the inner side of this groove 19.

In this case, by being formed at the capillarity of the groove 19 on the inwall of heat pipe 3, the stronger capillarity of in addition fine copper fiber 28, thus can under the condition not by the impact of gravity, reliably pure water is carried, and due to the flow of the degree that pure water will be caused to exhaust because of pure evaporation of water fully can be kept, therefore not easily lose the conveying function of the pure water as cooler and radiator unit.Moreover copper fiber 28 by being woven into mesh-shape, thus can be arranged on the pre-position of heat pipe 3 equably.And owing to forming cylindrical body 10 with copper corpus fibrosum 8, the operability therefore to heat pipe 3 filling is good, and cheap.Further, owing to covering the opening portion of groove 19 with copper fiber 28, thus capillarity obtains tremendous raising, can improve the performance of radiator unit thus.

Moreover, be preferably, following heat pipe 3 can be provided, that is, by a part for copper fiber 28 to be sintered the inwall at heat pipe 3 in the inner side of groove 19, thus easily from heat pipe 3 to copper fiber 28 heat by conduction, and then the heat pipe 3 of thermal resistance excellence.

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

In this embodiment, the internal structure of heat pipe 3 and the second embodiment different.Specifically as shown in figure 14, use the plates 30 formed by sintered copper fiber 28, to replace the cylindrical body 10 formed 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 inner side being close to groove 19.

Figure 15 and Figure 16 each illustrates the structure of plates 30 monomer be incorporated in heat pipe 3.Plates 30 are, multiple copper fibers 28 of marshalling in one direction in stratiform are processed as plates shape by sintering, and in order to improve the capillarity of copper fiber 28, and the direction of copper fiber 28 is configured in the mode of the length direction marshalling along heat pipe 3.

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

Then, is tied tight in one end of heat pipe 3 and necking down by forging and stamping processing, further, welded by Tig and necking part is sealed, thus forming sealing 5.Moreover the other end of heat pipe 3 is also tied tight and necking down by forging and stamping processing, and formed as the injection for carrying out pure water and the mouth of pipe that vacuumizes.Then, carry out the injection of pure water to the inside of heat pipe 3 from this mouth of pipe, and vacuumize, then welded by Tig and seal this spout part, thus form sealing 6.At this time point, the inside of heat pipe 3 is sealed in the mode cut off with extraneous air, thus obtains the heat pipe 3 being sealed the two ends of the heat pipe cavity 4 of linearity by sealing 5,6 as shown in Figure 4.The state diagram of heat pipe 3 inside is at this moment shown in figure 18.Thereafter, as previously described, by implementing bending machining and form bend 21 in the appropriate position of heat pipe cavity 4, and a part for opposite heat tube cavity 4 or whole implementation extrusion process and form plat part 22, thus obtain the heat pipe 3 of required form as shown in Figure 3.

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

In this series of cool cycles, although be detained due to the condensation of steam at radiating part 12 place cooled by fin 2 and have pure water, and be subject to the heated parts 11 place evaporating pure water from the heat of CPU, but strengthen to make described capillarity, thus no matter which kind of is in posture is set, all can under the condition not by the impact of gravity, reliably the pure water in radiating part 12 place's condensation is transported to heated parts 11, and in order to the flow of pure water being remained on the degree arriving the pure water of heated parts 11 and all can not exhaust due to evaporation, and in the present embodiment, the inwall of heat pipe 3 forms groove 19, and load copper fiber 28 in the inner side of this groove 19 in the mode being close to protuberance 20, thus the opening portion of groove 19 is capped by copper fiber 28, the capillarity that groove 19 thus in heat pipe 3 produces obtains tremendous raising.Thereby, it is possible to realize the function of heat pipe 3 is not easily lost, and make the quality product that the performance of heat pipe 3 significantly improves.

Moreover, in the present embodiment, in order to improve the capillarity in described heat pipe 3, and the material of heat pipe 3 and copper fiber 28 is all chosen to be copper.And, after in the heat pipe cavity 4 being filled in heat pipe 3 by the plates 30 formed sintering copper fiber 28, plates 30 are close to the protuberance 20 of heat pipe 3, and copper fiber 28 and protuberance 20 are sintered together, thus capillarity can be improved to greatest extent, and the thickness of heat pipe 3 and plates 30 is suppressed in Min..

Moreover in order to avoid the problem of the operability that copper fiber 28 fractures etc., the wire diameter of copper fiber 28 is preferably more than 20 μm, and the upper limit of wire diameter is preferably less than the well width of the side, opening portion of groove 19.Groove 19 is full of by liquid phase substantially, and the inner side of copper fiber 28 is mainly gas phase.And, due in the work of heat pipe 3, freely changing of these liquid and gas can not be lacked, therefore need liquid phase can move from the inside of lateral slot 19 in copper fiber 28, and the gas phase of groove 19 can to the medial movement of copper fiber 28.Therefore, to be less than the condition degree of the well width of groove 19 particularly important for the wire diameter of copper fiber 28.

Figure 19 be to the flat processing of present embodiment after the cross section of heat pipe 3 take after photo.Although the process that this photo cuts off due to cross section is not good, and exist cannot the place of visual confirmation groove 19, and actually, the whole circumference in heat pipe 3 all can visual confirmation groove 19.

As described above, in the radiator unit of present embodiment, also the copper fiber 28 of the fine fiber as generation capillarity is filled in the inside of the heat pipe 3 as body, particularly, at this, on the inwall of heat pipe 3, form groove 19, and copper fiber 28 is filled in the inner side of this groove 19.

So, by being formed at the capillarity of the groove 19 on the inwall of heat pipe 3, the stronger capillarity of in addition fine copper fiber 28, thus can under the condition not by the impact of gravity, reliably pure water is carried, and due to the flow of the degree that pure water will be caused to exhaust because of pure evaporation of water can be kept fully, therefore not easily lose the conveying function of the pure water as cooler and radiator unit.And owing to covering the opening portion of groove 19 with copper fiber 28, thus capillarity obtains tremendous raising, can improve the performance of radiator unit thus.

Moreover in the present embodiment, the material of heat pipe 3 and copper fiber 28 is made up of copper.In this situation, because the formation heat pipe 3 of groove 19 and the material of copper fiber 28 are copper equally, therefore capillarity becomes maximum, thus can improve the performance as radiator unit further.

Moreover in the present embodiment, the wire diameter of copper fiber 28 is formed more than 20 μm and is less than the well width of this groove 19.In this situation, due to the wire diameter of copper fiber 28 is set as more than 20 μm, thus operational problem copper fiber 28 can being avoided to rupture etc.Moreover, if the wire diameter of copper fiber 28 is less than the well width of this groove 19, then can between groove 19 and copper fiber 28, realize freely changing of gas phase and liquid phase, thus the performance as radiator unit can be improved further.

In the present embodiment, the copper fiber 28 of the fine fiber as generation capillarity is filled in the inside of the heat pipe 3 as body, particularly, at this, the inwall of heat pipe 3 forms groove 19, and make the plates 30 formed by sintering copper fiber 28 be close to the protuberance 20 of protuberance, the i.e. heat pipe 3 of this groove 19, and copper fiber 28 and groove 19 are sintered together.

So, by being formed at the capillarity of the groove 19 on the inwall of heat pipe 3, the stronger capillarity of in addition fine copper fiber 28, thus can under the condition not by the impact of gravity, reliably pure water is carried, and due to the flow of the degree that pure water will be caused to exhaust because of pure evaporation of water can be kept fully, therefore more not easily lose the conveying function of the pure water as cooler and radiator unit.Moreover, it is made to be close to after in the heat pipe cavity 4 being filled in heat pipe 3 by the plates 30 formed sintering copper fiber 28 in advance, and plates 30 and protuberance 20 are sintered together, thus capillarity can be improved to greatest extent, and suppress thickness to greatest extent.And, owing to covering the opening portion of groove 19 with copper fiber 28, thus capillarity obtains tremendous raising, the performance of radiator unit can be improved thus, and owing to copper fiber 28 being filled on the groove 19 on the inwall being formed in heat pipe 3 by sintering, thus the heat conductivity between heat pipe 3 and copper fiber 28 can be kept preferably, optimize the thermal resistance of body 3 thus.

And, in the present embodiment, due to along the direction of length direction becoming 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 more not easily can lose the conveying function of pure water.

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

In fig. 20, the sectional view on the direction orthogonal to the longitudinal direction of the heat pipe 3 in Fig. 4 is illustrated.In the figure, multiple groove 19 has circumferentially been formed uniformly the whole of inwall of heat pipe 3.On the other hand, in the present embodiment, as fiber, the non-woven fabrics 42 that is made up of the metallic fiber 41 of copper fiber etc. or the sintered sheet body 43 sintering this non-woven fabrics 42 and obtain, be loaded in the mode of the inner side being close to groove 19 and be accommodated in heat pipe 3.

Non-woven fabrics 42 in capillary pipe structure or sintered sheet body 43 and each groove 19, from one end of heat pipe 3 to the other end, are arranged continuously in the continual mode in centre.Thus, first flow 17 and the second runner 18 is respectively equipped with in the inside of heat pipe 3, described first flow 17 is formed on non-woven fabrics 42 or sintered sheet body 43 with each groove 19, and make to move towards heated parts 11 at the pure water as circulation fluid (not shown) of radiating part 12 place's condensation, described second runner 18 is formed in the central area of the heat pipe cavity 4 surrounded by non-woven fabrics 42 or sintered sheet body 43, and makes to move towards radiating part 12 at the steam of heated parts 11 place evaporation.

Figure 21 illustrates the metallic fiber 41 under the state in attached body such as being wound in corrugated board 44.Metallic fiber 41 is drawn out from corrugated board 44, thus the straight fibres 45 formed as shown in figure 22 and reticular fibre 46.By by this straight fibres 45 and reticular fibre 46 superimposed, thus produce the non-woven fabrics 42 of the inside that can fill in heat pipe 3.Although general fiber plates are made into netted by ordinate and horizontal line, but the non-woven fabrics 42 in present embodiment does not weave metallic fiber 41, but by roughly evenly distributed in one direction longer straight fibres 45 and be shorter than this straight fibres 45 and reticular fibre 46 general uniform configured on random direction ground superimposed, linked together by these straight fibres 45 and reticular fibre 46, thus form the non-woven fabrics 42 of plates shape.

The wire diameter of straight fibres 45 and reticular fibre 46 is all in the scope of 10 ~ 200 μm, more for fine line diameter then more can form the heat pipe 3 with excellent performance, be more that the processing of thick line footpath then as metallic fiber 41 is easier, thus more can realize the reduction of cost.Moreover, although the length of straight fibres 45 is tens m when the making of non-woven fabrics 42, is the length (being mostly about 180mm) of each heat pipe 3 of cooperation thereafter, and uses the non-woven fabrics after cutting 42.The length of reticular fibre 46 is in the scope of a few mm ~ tens mm, different according to the preparation method of non-woven fabrics 42.

Although the non-woven fabrics 42 shown in Figure 22 is after cutting out as suitable length, can fill in heat pipe 3, but due under the state directly used, reticular fibre 46 easily departs from from straight fibres 45, therefore as shown in figure 23, can use and non-woven fabrics 42 is sintered, thus make the sintered sheet body 43 that straight fibres 45 and reticular fibre 46 are bonded with each other.The photo of the side (reticular fibre 46 side) that Figure 24 (a) is sintered sheet body 43, the photo of the opposite side (straight fibres 45 side) that Figure 24 (b) is sintered sheet body 43.

Heat pipe 3 is as shown in Figure 3 manufactured in order to use above-mentioned non-woven fabrics 42, first, from having opened the one end (or other end) of heat pipe 3 at two ends to the described non-woven fabrics 42 cut out as suitable size, with the inner side of the groove 19 on the inwall being formed at heat pipe 3, the mode be close on the region wide as far as possible of protuberance 20 is loaded.At this, although non-woven fabrics 42 is in the mode making the direction of straight fibres 45 consistent along the length direction of heat pipe 3, be rolled into tubular and fill in the inside of heat pipe 3, but with metal fine is installed or compared with the situation of loading netted fiber plates etc. by fixture, close property between non-woven fabrics 42 and protuberance 20 is excellent, thus capillarity obtains tremendous raising, and be also suitable for slimming.

Moreover, as described above, by straight fibres 45 and reticular fibre 46 superimposed and after producing non-woven fabrics 42, if sinter this non-woven fabrics 42, then become the sintered sheet body 43 straight fibres 45 and reticular fibre 46 engaged.When manufacturing heat pipe 3 as shown in Figure 3 to use this sintered sheet body 43, first, from having opened the one end (or other end) of heat pipe 3 at two ends to the sintered sheet body 43 cut out as suitable size, with the inner side of the groove 19 on the inwall being formed at heat pipe 3, the mode be close on the region wide as far as possible of protuberance 20 is loaded.Figure 25 illustrates the state filled in a certain degree by sintered sheet body 43 in heat pipe 3.In figure, the arrow of intermediate blank is the filling direction of sintered sheet body 43.Although in this case, sintered sheet body 43 is also in the mode making the direction of straight fibres 45 consistent along the length direction of heat pipe 3, be rolled into tubular and fill in the inside of heat pipe 3, but with metal fine is installed or compared with the situation of loading netted fiber plates etc. by fixture, close property between the sintered sheet body 43 obtained from non-woven fabrics 42 and protuberance 20 is excellent, thus capillarity obtains tremendous raising, and be also suitable for slimming.

Non-woven fabrics 42 or sintered sheet body 43 are being filled in heat pipe 3 in any case, are all afterwards, tied tight one end of heat pipe 3 and necking down, further, welded and seal this necking part by Tig, thus forming sealing 5 by forging and stamping processing.Moreover the other end of heat pipe 3 is also tied tight and necking down by forging and stamping processing, and formed as the injection for carrying out pure water and the mouth of pipe that vacuumizes.Then, implement the injection of pure water to the inside of heat pipe 3 from this mouth of pipe, and vacuumize, then welded by Tig and seal this spout part, thus form sealing 6.At this time point, the inside of heat pipe 3 is sealed in the mode cut off with extraneous air, thus obtains this heat pipe 3 being sealed the two ends of the heat pipe cavity 4 of linearity by sealing 5,6 as shown in Figure 4.The state diagram of heat pipe 3 inside is now shown in Figure 26 and Figure 27.Thereafter, as described above, by carrying out bending machining and form bend 21 in the appropriate position of heat pipe cavity 4, and a part for opposite heat tube cavity 4 or whole implementation extrusion process and form plat part 22, thus obtain the heat pipe 3 of required form as shown in Figure 3.

In described a series of manufacturing process, by loading in the mode being close to the protuberance 20 be formed between groove 19,19 on the inner wall part of heat pipe 3 non-woven fabrics 42 (or sintered sheet body 43), thus the opening portion of each groove 19 is capped by having the non-woven fabrics 42 in fine space, the capillarity that groove 19 produces thus obtains tremendous raising.And in order to improve this capillarity to greatest extent, the material of heat pipe 3 and non-woven fabrics 42 is all chosen to be copper.Moreover, particularly, non-woven fabrics 42 is sintered and the sintered sheet body 43 that obtains by using, thus at the inner wall part of heat pipe 3, and the close property between protuberance 20 improves further, and reticular fibre 46 also can not come off in midway, the operability of loading non-woven fabrics 42 thus becomes comparatively easy.

And, after non-woven fabrics 42 (or sintered sheet body 43) is filled in the inside of heat pipe 3, when in order to make non-woven fabrics 42 be close to protuberance 20, and by non-woven fabrics 42 by the peripheral direction to heat pipe 3, when non-woven fabrics 42 and protuberance 20 being bonded together by sintering again, the capillarity of first flow 17 can be improved to greatest extent, and thereafter in order to formed plat part 22 and implement extrusion process in, also can avoid the problem producing gap between non-woven fabrics 42 and protuberance 20.Moreover, compared with the product of existing sintered gold genotype copper powder is sintered on the inner wall part of heat pipe 3, due to non-woven fabrics 42 can be made not only even but also thin, therefore, it is possible to the thickness of the plat part 22 of the heat pipe 3 after extrusion process is formed thinner.

Due to by peripheral direction from sintered sheet body 43 (or non-woven fabrics 42) to heat pipe 3 pressing time, this sintered sheet body 43 is compressed, thus the sintered sheet body 43 of the thin layer be made up of highdensity metallic fiber 41 can make the integral thickness of heat pipe 3 thinning, preferred optimal form when can become use thus.Because the sintered sheet body 43 in this situation is compared with woven wire, the protuberance for heat pipe 3 has high close property, and is had high capillarity by high-density fiber, and the performance therefore as heat pipe 3 significantly improves.

Moreover, sintered sheet body 43 in heat pipe 3 is compared with existing sintering metal (copper powder sintered article), can be formed as slim, its reason is, when sintering metal, need to load copper powder in the gap between the plug and the inwall of this heat pipe 3 of the inner side being arranged at the heat pipe 3 with groove 19, and extract plug after sintered copper powder, but when reducing gap, copper powder can not spread all over, thus cannot make the thickness slimming of copper powder entirety.In fact, the thickness filling in the non-woven fabrics 42 behind the inside of heat pipe 3 is about 0.2 ~ 0.3mm, compared with the thickness (about 0.5 ~ 0.6mm) when sintered copper powder, can become below half.Further, because the non-woven fabrics 42 in present embodiment or sintered sheet body 43 are formed plates shape, therefore, it is possible to make the fibre diameter of metallic fiber 41 attenuate, thus obtain fine space, the heat pipe 3 of the excellence of high capillarity as described above can be obtained thus.

Figure 27 be to the flat processing of present embodiment after the cross section of heat pipe 3 carried out the photo after taking.Although it is good and cannot the place of visual confirmation groove 19 that this photo does not exist the process cut off due to cross section, in fact, whole in heat pipe 3 circumferentially all can visual confirmation groove 19.Moreover, in contrast, the sectional view of the heat pipe 3 on the existing inwall making copper powder 60 be sintered in heat pipe cavity 4 is shown in Figure 28.

Copper powder not easily arranges thinner and evenly by existing heat pipe 3, and space is also uneven.Therefore, the water shortage of conveying in heat pipe 3, thus cause the possibility of function stop higher.On the other hand, because copper fiber 28 arranges thinner and except uniform cylindrical body 10 or plates 30 except all having by the heat pipe 3 of the second embodiment ~ the 4th embodiment, also there is the non-woven fabrics 42 or sintered sheet body 43 that are made up of metallic fiber 41, therefore, it is possible to overcome such problem, thus the function as heat pipe 3 is improved significantly.

As described above, in the radiator unit of present embodiment, also the metallic fiber 41 of the fine fiber as generation capillarity is filled in the inside of the heat pipe 3 as body, particularly, groove 19 is formed here on the inwall of heat pipe 3, and to by using as the metal straight fibres 45 of described metallic fiber 41 and the superimposed and non-woven fabrics 42 that formed of reticular fibre 46, load in the mode be close to as the protuberance 20 of the protuberance of groove 19.

In this case, by being formed at the capillarity of the groove 19 on the inwall of heat pipe 3, the stronger capillarity of in addition fine metallic fiber 41, thus can under the condition not by the impact of gravity, reliably pure water is carried, and due to the flow of the degree that pure water will be caused to exhaust because of pure evaporation of water fully can be kept, therefore more not easily lose the conveying function of the pure water as cooler and radiator unit.Moreover, due to by by carrying out superimposed to straight fibres 45 and reticular fibre 46, non-woven fabrics 42 that is that formed fills in the inside of heat pipe 3, thus close property between non-woven fabrics 42 and protuberance 20 is good, and the opening portion of groove 19 is capped by having the non-woven fabrics 42 in fine gap, therefore capillarity obtains tremendous raising, the performance of radiator unit can be improved thus, and by thinner non-woven fabrics 42, thus the slimming of heat pipe 3 can be realized.And, owing to being filled in by non-woven fabrics 42 on the groove 19 on the inwall being formed in heat pipe body 3 by sintering, thus the heat conductivity between heat pipe body 3 and non-woven fabrics 42 can be kept preferably, optimize the thermal resistance of heat pipe body 3 thus.

Moreover, sintered sheet body 43 as following plates can be loaded in the mode of the protuberance and protuberance 20 of being close to groove 19, the non-woven fabrics 42 that described plates close straight fibres 45 and reticular fibre 46 through the stack and form sinters, thus straight fibres 45 and reticular fibre 46 are bonded together and are formed.

Due in this case, also by being formed at the capillarity of the groove 19 on the inwall of heat pipe 3, the stronger capillarity of in addition fine metallic fiber 41, thus can under the condition not by the impact of gravity, reliably pure water is carried, and due to the flow of the degree that pure water will be caused to exhaust because of pure evaporation of water fully can be kept, therefore not easily lose the conveying function of the pure water as cooler and radiator unit.Moreover, by the non-woven fabrics 42 formed superimposed straight fibres 45 and reticular fibre 46 is sintered the inside that obtained sintered sheet body 43 fills in heat pipe 3, thus close property between sintered sheet body 43 and protuberance 20 is more good, and be capped by having the sintered sheet body 43 in fine space due to the opening portion of groove 19, therefore capillarity obtains tremendous raising, the performance of radiator unit can be improved thus, and by thinner sintered sheet body 43, thus the slimming of heat pipe 3 can be realized.And, owing to being filled in by sintered sheet body 43 on the groove 19 on the inwall being formed in heat pipe body 3 by sintering, thus the heat conductivity between heat pipe body 3 and sintered sheet body 43 can be kept preferably, optimize the thermal resistance of heat pipe body 3 thus.

Moreover the present invention is not limited to above-mentioned embodiment, various change can be carried out in the scope not departing from main idea of the present invention.Such as, the cooler shown in each embodiment, except PC, can also be installed in the various machines needing cooling, also the circulation fluid sealing beyond 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, non-woven fabrics 42, sintered sheet body 43 has the larger pyroconductivity for heat conveying, corrosion can not be there is relative to the water enclosed thus there is hydrophily, and be applicable to burning till use, and consider with formed with same material pipe and fiber for condition time, copper is the most suitable, but according to the purposes as cooler, also can be other metal of such as aluminium, SUS (stainless steel) etc.And, be preferably, the wire diameter of copper cash 24 or metallic fiber 41 is set to the well width being less than groove 19.Its reason is with illustrated identical in the third embodiment.

Symbol description

3-heat pipe (body)

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

10-cylindrical body

19-groove

20-protuberance (protuberance)

24-copper cash (fiber)

28-copper fiber (fiber)

30-plates

41-metallic fiber (fiber)

42-non-woven fabrics

43-sintered sheet body (plates)

45-straight fibres

46-reticular fibre

Claims (6)

1. a cooler, the fine fiber producing capillarity is filled in the inside of body by it, and the feature of described cooler is,

By one end of the inwall of described body until the grooving of other end continuity landform, and the non-woven fabrics formed by the superimposed metal straight fibres as described fiber and reticular fibre is filled in the inside of described body, and be close on the protuberance of described groove to make described non-woven fabrics, and then be arranged through the protuberance of described non-woven fabrics and described groove is sintered and the joint portion obtained, in the inside of described body, described non-woven fabrics is to be pressed and by the state compressed towards the peripheral direction of described body

Described non-woven fabrics is by the described straight fibres that arranges equably in same direction and shorter than described straight fibres, and the non-woven fabrics that the described reticular fibre being configured in random direction has carried out superimposed,

Along described body length direction and make the direction of described straight fibres consistent,

The state at groove is not squeezed into, by the opening portion of groove described in described non-textile mulch at described non-woven fabrics.

2. cooler as claimed in claim 1, is characterized in that,

Described nonwoven fabric roll is coiled into tubular and fills in the inside of described body.

3. cooler as claimed in claim 1, is characterized in that,

The wire diameter of described straight fibres and described reticular fibre is all located in the scope of 10 ~ 200 μm.

4. a cooler, the fine fiber producing capillarity is filled in the inside of body by it, and the feature of described cooler is,

By one end of the inwall of described body until the grooving of other end continuity landform, and plates are filled in the inside of described body, and be close on the protuberance of described groove to make described plates, and then be arranged through the protuberance of described plates and described groove is sintered and the joint portion obtained, in the inside of described body, described plates are to be pressed and by the state compressed towards the peripheral direction of described body, described plates are cooperated through the stack as the metal straight fibres of described fiber and reticular fibre and the non-woven fabrics formed sinters, thus described straight fibres and described reticular fibre are bonded together,

Described plates are by the described straight fibres that arranges equably in same direction and shorter than described straight fibres, and the plates that the described reticular fibre being configured in random direction has carried out superimposed,

Along described body length direction and make the direction of described straight fibres consistent,

Be not squeezed into the state at groove at described plates, covered the opening portion of described groove by described plates.

5. cooler as claimed in claim 4, is characterized in that,

Described plates are wound into tubular and fill in the inside of described body.

6. cooler as claimed in claim 4, is characterized in that,

The wire diameter of described straight fibres and described reticular fibre is all located in the scope of 10 ~ 200 μm.