CN1619803A - Flow-path constituting body - Google Patents

Abstract

The flow path structure (150) of the present invention is characterized in that it has at least two openings (151, 155, 156, 158) for fluid inflow or outflow, and has a flow path (152, 158) for communicating between the openings. 154, 157), at least a part of the flow path is constituted by a non-adhesive area defined by an adhesive area between the flexible films or between the flexible films and other members. Therefore, by adopting the present invention, when forming a fluid path of a fluid, it is possible to utilize flexibility to easily arrange or align the position, and it is very easy to perform the flow path formation operation during manufacture, and it has sufficient flexibility and can Ensure fluid tightness.

Description

flow path structure

technical field

The present invention relates to a flow channel structure, and particularly relates to a structure of a flow channel structure suitable for cooling a heat-generating part of an electronic device such as a personal computer with a fluid.

Background technique

In recent years, as the performance of personal computers has been significantly improved, and the processing speed of CPU (Central Processing Unit) has also increased rapidly, the heat generated by CPU chips and the like has also increased, and its cooling method has become a problem. In a conventional general cooling method, a heat generating part such as a CPU chip is fixed to a heat sink having a fan or the like, and forced air cooling is performed by sending an air flow to the heat sink with the fan or the like. However, in such an air cooling method, if the cooling capacity is to be improved, there is a problem that the noise of the air-cooling fan increases, and since a ventilation space for cooling cannot be sufficiently ensured in the casing of a miniaturized computer, there is also a problem of inability The problem of obtaining adequate cooling efficiency.

Therefore, a liquid cooling method has been studied, which includes a pump that brings a cooling jacket into contact with a heat-generating part such as a CPU chip, supplies and circulates a liquid into the cooling jacket, and propels the liquid through a circulation path of the liquid; and a heat dissipation unit having a heat sink structure (for example, refer to the following Patent Document 1).

[Patent Document 1] Japanese Patent Laid-Open No. 2002-99356

However, in the cooling system of the above-mentioned conventional liquid cooling method, since the pipes made of metal or synthetic resin are used to connect the cooling jacket, the radiator, the pump, the storage tank, etc., many pipes and connections are required. There are problems in that the number of parts increases, and the connection work during assembly is complicated, and it takes time and effort in manufacturing.

In addition, since flexible pipes made of synthetic resin generally do not have gas barrier properties, since the coolant in the pipe or its connection with each part cannot be completely prevented from volatilizing to the outside, it can be expected that the cooling will occur over time. The number of doses is reduced. Therefore, a secondary chamber such as a storage tank is provided in consideration of the volatilization amount of the coolant and the degree of expansion and contraction of the coolant, and since the capacity must be sufficiently ensured, there is also a problem that it is difficult to downsize the system. On the other hand, in order to prevent the volatilization of the above-mentioned coolant, it is also considered to use a metal pipe, but in this case, since it is difficult to bend the pipe properly, it is difficult to arrange (Japanese: 取り回し) work and position alignment of the piping. Questions about quasi (Japanese: 合わせ) homework.

Contents of the invention

Therefore, the present invention was made in order to solve the above-mentioned problems, and its object is to provide a flow path that can be easily arranged or aligned by utilizing flexibility when configuring a fluid path for a fluid, and can be manufactured extremely easily. The flow path structure that constitutes the job. Another object is to provide a flow channel structure that has sufficient flexibility, can absorb volume fluctuations caused by changes in fluid (liquid) temperature, and can ensure fluid tightness.

In order to achieve the above object, the flow path structure of the present invention is characterized in that it has at least two openings for fluid inflow or outflow, and has a flow path that communicates between the mouth portions, and the entire flow path is made of a flexible material. The non-adhesive area defined by the adhesive area between the flexible films forms an integral body.

According to the present invention, since the flow path can actually be constituted only by the flexible film, the manufacture becomes easy, and the flexibility and the sealing performance of the flow path can be improved.

In another flow path structure of the present invention, an adhesive region is provided for bonding the flexible films to each other or a part of the flexible film and other members, and a non-adhesive region is left for not bonding the other part. , a flow path structure that constitutes at least a part of the flow path using the non-adhesive region.

At least a part of the flow path is constituted by a non-adhesive area defined by the above-mentioned adhesive area. Here, the flow path structure may be a member formed by bonding parts of two or more flexible films to each other, or may be formed by bonding a part of one flexible film by bending or the like. member, or a member in which a flexible film is partially bonded to another member.

Adopt the present invention of above-mentioned constitution, owing to constituting the flow path that communicates between mouth parts, and utilizing at least a part of this flow path to be limited by the non-adhesive area between flexible films or flexible film and other members. Because of the regional structure, it is very easy to form a flow path with an appropriate shape and structure. In particular, by using the non-adhesive area defined by the adhesive area between the flexible films, sufficient flexibility can be ensured, so that the work of arrangement and alignment can be easily performed. Also, by setting the bonding area between the flexible films, or by setting the bonding area between the flexible film and other components, since the rigidity of the bonding area can be improved to a certain extent, by pre-configuring the The shape of the flow path can be maintained in an appropriate flow path shape, so the work of forming the flow path can be easily performed. In addition, as long as the bonding area and non-adhering area between flexible films or between flexible films and other members are properly designed, the shape of the flow path can be formed extremely easily and freely.

As a more specific structure of the above two inventions, it is possible to form a non-adhesive region formed by bonding two flexible film parts to each other to form an integral body and sandwiching both sides in a pair of bonding regions. To form the structure of the flow path, or a piece of flexible film can be folded and bonded to maintain the folded state, using a pair of bonding regions to sandwich the two sides of the non-bonding region, or using A non-adhesive area formed by sandwiching both sides between the bent portion and the adhesive area constitutes a flow path. In addition, the other members to which the flexible film and a part are bonded may be arbitrary members such as plates or blocks of synthetic resin or metal, or may be various constituent parts or frameworks such as the heat receiving part and the heat radiation part described later. or frame etc.

In addition, the term "bonding" in the present invention is not limited to the case of bonding using an adhesive agent, but also broadly includes a state in which flexible films are adhered and fixed to each other as a result. In particular, it is preferable to directly weld (fused) the flexible films to each other or the flexible films to other members.

In the present invention, preferably, the flexible film is integrally formed to have a plurality of the flow paths or the branched flow paths. By integrally forming a plurality of flow paths with a flexible film, it is possible to connect a plurality of pipes individually, or to bundle a plurality of pipes, and to arrange a plurality of flow paths at once without any special work. In addition, since the branched flow path is integrally formed by a flexible film, and since complicated piping connection work and joint parts are not required, the manufacturing cost can be reduced and the piping system can be compacted.

In the present invention, preferably, the flexible film is a laminated film composed of a laminated body of a metal layer and a resin layer. Since the above-mentioned flexible film is a laminated film composed of a laminated body of a metal layer and a resin layer, fluid tightness and gas barrier properties (water vapor barrier properties) can be improved, and sufficient flexibility can be ensured. As the metal layer of the laminated film, for example, a metal layer made of aluminum, aluminum alloy, silver, silver alloy, copper, copper alloy, gold, gold alloy, etc. can be mentioned, and it can be a foil, or a vapor-deposited layer and Coating layers such as coatings. By providing this metal layer, gas barrier properties can be easily ensured. Further, examples of the resin layer of the laminated film include polyolefin-based plastics, such as resin layers made of polyethylene, polypropylene, and the like. As such a laminated film, it is preferable to have a structure in which the front and back surfaces of the metal layer are covered by two resin layers together, and it is also preferable that the resin layers or the resin layer and the metal layer can be welded (fused) to each other. ) material composition. Examples of resins having such heat-sealing properties include the aforementioned polyolefin-based resins, some polyesters, nylons, and the like.

In the present invention, it is preferable to have a closed non-adhesive region (retreat portion) which communicates with the middle of the flow path and is formed beside it. Thus, by providing the closed non-adhesive region, part of the fluid can be retreated in this region, so the volume change caused by the expansion or contraction of the fluid can be absorbed, and the rupture of the flow path structure and the Fluid leaks, etc. In addition, the closed non-adhesive region is provided with a flow path structure in a position above the flow path, and when liquid is circulated in the flow path, since the sealed non-adhesive region can accommodate The gas contained in the liquid or the gas released from the liquid can be retained in a state separated from the liquid in the flow path, so it is possible to prevent the occurrence of adverse conditions caused by the gas (for example, a decrease in heat exchange efficiency) , or gas enters the pump and cannot discharge liquid, etc.).

In the present invention, it is preferable that a deformation member whose volume is reduced by compression deformation is accommodated in the sealed non-adhesive region. Thus, by accommodating the deformable member in the closed non-adhesive area, the fluid that always circulates in the flow path basically does not enter the closed non-adhesive area, and a state where the fluid does not stagnate can be formed. , when the volume of the fluid increases, the deformable member is compressed to reduce its volume, so that the fluid corresponding to the volume-reduced portion enters the closed non-adhesive region. Therefore, the volume change of the fluid can be absorbed without substantially changing the appearance of the flow channel structure.

In the present invention, it is preferable to provide a cross-section maintaining means for maintaining the flow cross-section of the flow path. Since the flow path of the present invention is constituted by the non-adhesive region of the flexible film, it is considered that the flow cross section of the flow path cannot be sufficiently ensured when the fluid pressure is low. Therefore, by providing the cross-section holding means for holding the cross-section of the flow path, since the flow cross-section can be sufficiently ensured, the flow path resistance of the fluid can be reduced. As the section holding means, a member that ensures the interval between the flexible films or the flexible film and other members in the non-adhesive region can be used. For example, an inner support member that acts to separate the flexible films or the flexible film from other members in the flow path, and the outer surface of the flexible film that is fixed to one of the non-adhesive regions , an outer support member, etc., which act so as to separate the outer surface from the other flexible film or member. In particular, the inner support member arranged in the flow path is preferable in view of maintaining the cross section of the flow path more reliably. Since the inner support member is arranged in the flow path, it is preferable that it is configured so as not to hinder the flow of the fluid. For example, preferably the inner support member is a hollow member. Furthermore, it is preferable that such a cross-section retaining device has a structure that does not hinder flexibility in the flow path direction in the flow path structure. Specifically, the cross-sectional retaining device itself may be any structure as long as it has flexibility to bend in the flow direction. For example, if the hollow member is used as the above-mentioned inner supporting member, the hollow member may be made of a flexible material, or may be formed into a helical structure.

A heat exchange system or a temperature control system can be configured using the above-mentioned flow path structure. For example, a heat exchange (temperature control) system has: a heat receiving part with a heat absorption function; a heat dissipation part with a heat dissipation function; a circulation path passing through the heat reception part and the heat dissipation part; and a fluid to be circulated in the circulation path In the propulsion fluid propulsion device, at least a part of the circulation path is composed of any one of the flow path structures described above. Here, the above-mentioned flow channel structure can be configured, for example, to connect the above-mentioned flow channels between the heat receiving unit and the heat radiating unit, between the heat radiating unit and the fluid propelling device, and between the heat receiving unit and the fluid propelling device. In this case, it is preferable to use an integral flow path structure to constitute the two flow paths of the outgoing path and the return path provided between the constituent parts. Furthermore, it is preferable that all the integral flow path structures are also used to constitute the connecting flow path portion between the respective constituent parts provided in the above-mentioned system.

Description of drawings

Fig. 1 is a schematic perspective view showing a heat exchange system according to an embodiment.

Fig. 2 is a schematic exploded perspective view showing the laminated structure of the flexible film according to the embodiment.

Fig. 3 is a schematic perspective view showing a method of manufacturing the channel structure according to the embodiment.

FIG. 4 is a schematic perspective view showing a configuration example of a part of the flow channel structure.

Fig. 5 is an enlarged partial cross-sectional view of the configuration example shown in Fig. 4 .

Fig. 6 is a schematic perspective view showing another configuration example of a part of the flow channel structure.

Fig. 7 is an enlarged partial cross-sectional view of the configuration example shown in Fig. 6 .

Fig. 8 is a schematic exploded perspective view showing another structural example of a part of the flow channel structure.

Fig. 9 is a schematic perspective view showing yet another configuration example of a part of the flow channel structure.

Fig. 10 is a schematic perspective view showing yet another different configuration example of a part of the flow channel structure.

Fig. 11 is a plan view showing an embodiment of a different channel structure.

Detailed ways

Hereinafter, embodiments of the present invention will be described together with illustrated examples. In addition, each embodiment described below will be described as a flow path structure used in a heat exchange system including a heat receiving part, a heat dissipation part, and a fluid propelling device, but the flow path structure of the present invention is not limited to such an application. , Can be widely used in devices constituting flow paths provided in a part of various systems.

FIG. 1 is a schematic configuration perspective view showing the outline of a heat exchange system 100 incorporating the flow path structure of the present invention. This heat exchange system 100 has a heat receiving part (cooling case) 110, a heat radiating part (radiator) 120, a cooling fan 130 for blowing an air flow to the heat radiating part 120 for forced cooling, and a fluid (in this embodiment, a liquid) A fluid propelling device (pump) 140 for circulation, and a flow path structure body 150 constituting a flow path between the heat receiving part 110 and the heat dissipation part 120 .

The heat receiving unit 110 has a flow path (not shown) inside, and is configured to absorb heat from a heat generating part (not shown) such as a CPU chip by contacting the heat generating part. An inlet port and an outlet port are provided in the heat receiving part 110, and the ports 155 and 156 of the flow path structure 150 are connected to them.

The radiating part 120 has an inlet and an outlet connected to a not-shown flow path formed inside, and the mouths 151 and 158 of the flow path structure 150 are connected to them. In addition, a large number of heat dissipation fins 121 are provided on the outer surface, and these heat dissipation fins 121 are configured to dissipate heat to the outside. The heat dissipation unit 120 is configured to receive blown air from a cooling fan 130 having a known structure. The airflow generated by the cooling fan 130 is blown toward the heat dissipation fins 121 to forcibly cool the heat dissipation portion 120 .

The fluid propelling device 140 is a device that applies a propelling force to the fluid using a drive source such as a motor. In the illustrated example, the fluid propelling device 140 is connected to the end of the heat dissipation unit 120 to push the fluid introduced from the inlet of the heat dissipation unit 120 to the outlet of the heat dissipation unit 120 . Of course, the position of the fluid propelling device 140 can be arranged arbitrarily as long as it is within the circulation path described later, and is not limited to the illustrated example.

In the present embodiment, a circulation path reciprocating between the heat receiving unit 110 and the heat dissipation unit 120 is formed. This circulation path is constituted by an integral flow path structure body 150 in the illustrated example. That is, the outgoing path and the return path between the heat receiving portion 110 and the heat dissipation portion 120 are integrally constituted by the flow path forming body 150 . Flow path structure 150 has mouths 155 and 156 connected to the inlet and outlet of heat receiving unit 110 , and mouths 151 and 158 connected to the inlet and outlet of heat dissipation unit 120 . The ports 151 and 155 communicate with each other through the retention part (reservoir) 153 and the flow path 154 . Also, the ports 156 and 158 are connected by a flow path 157 .

With the above-mentioned structure, in the heat exchange system 100, by using the fluid propelling device 140 to impart propelling force to the fluid in the above-mentioned circulation path, the fluid such as coolant is guided from the outlet port of the heat receiving part 110 to the introduction of the heat dissipation part 120 through the flow path 157. Dissipate heat in the heat dissipation part 120, and return to the heat receiving part 110 again from the outlet of the heat dissipation part 120 through the flow path 152, the retention part 153 and the flow path 154, where heat from the outside is absorbed.

The stagnation part 153 has: the function of providing an escape space for absorbing the volume change of the fluid caused by the fluctuation of the fluid temperature; the function of a storage tank for supplying the fluid when the fluid decreases due to volatilization; Gas storage function for storing gas contained in liquid or gas generated from liquid when it is used as a fluid.

The flow channel structure 150 is formed by bonding the flexible films 150X and 150Y shown in FIG. 2 to each other, and is configured as a sheet-shaped member having flexibility as a whole. The flexible films 150X and 150Y are, as shown in FIG. 2 , laminated films in which resin layers 150A and 150C and a metal layer 150B are laminated. Thus, flexibility can be maintained, and both gas barrier properties (water vapor barrier properties) in the flow path, deformation strength, and corrosion resistance can be achieved.

The resin layers 150A and 150C are made of various synthetic resin films. In particular, resins having heat-sealing properties such as polyolefin-based polyethylene and polypropylene are preferable. In addition, heat-sealable materials such as polyester and nylon can also be used. Here, resin layers 150A and 150C may be made of the same material or may be made of different materials.

In addition, the metal layer 150B is preferably formed of foil or thin film (deposited film, sprayed film, coating film, etc.) made of metal such as aluminum, aluminum alloy, copper, copper alloy, silver, silver alloy, gold, gold alloy.

The flexible films 150X and 150Y of this embodiment are films in which the front and back surfaces of the metal layer 150B are coated with the resin layers 150A and 150C, thereby suitably enhancing the deformation strength and corrosion resistance of the metal layer 150B. Of course, depending on the application, only one metal layer and one resin layer may be laminated unless there is a problem in use.

In the channel structure 150 of the present embodiment, there are provided a bonded region where the flexible films 150X and 150Y are directly bonded or bonded with an adhesive, and a non-bonded region where they are not bonded to each other. In particular, it is preferable that the flexible films 150X and 150Y can be heat-sealed to each other and directly welded (fused). In this case, for example, the flexible films 150X and 150Y are heat-sealed between the molds A and B as shown in FIG. 3 . At this time, the portion pressed and heated by the molds A and B becomes the adhesive region 150T, and the portion not crimped or heated becomes the non-adhesive region 150S by providing the groove Aa of the mold A and the groove Ba of the mold B. In this way, any flow path structure 150z can be provided between the flexible films 105X and 150Y. For example, as shown in the figure, an integrated flexible film 150X, 150Y can also be used to form a plurality of flow path structures 150z composed of non-adhesive regions 150S at the same time. The branch channel structure 150v (portion corresponding to the groove Ab of the mold A and the groove Bb of the mold B) is branched in the middle of the channel structure 150z.

The illustrated flow path structure 150z is constituted by a non-adhesive region 150S whose both sides are defined by an adhesive region 150T. However, as the flow path structure, one piece of flexible film may be bent, and one side may be defined by the bent portion, and the opposite side may be constituted by a non-adhesive area defined by the same adhesive area as above.

Also, the above-mentioned flexible film is bonded to other members, for example, a part of a plate-shaped member or a block-shaped member to form an adhesive region, and by making a non-adhered region in a state where the other part is not bonded, it is possible to The same flow path as above can be easily configured. Also in this case, similarly to the above, a plurality of flow paths can be formed simultaneously by an integrated flexible film and other members, or a complicated flow path structure such as branching can also be integrally formed. However, in this case, if the other members are substantially inflexible, the flow path structure will also be substantially inflexible.

Referring to FIG. 1 again, description will be made. The orifices 151 , 158 , 155 , and 156 provided on the flow path forming body 150 are inlets or outlets formed at the ends of the flow paths 152 , 154 , and 157 . In the illustrated example, each mouth part has a structure in which a mouth member made of synthetic resin or the like is sandwiched between the above-mentioned flexible films 150X and 150Y. The oral member is adhesively fixed (welded and fixed) to the flexible films 150X and 150Y. It is in a completely sealed state between the oral member and the flexible films 150X and 150Y. These mouth members are provided with mouth holes communicating with the above-mentioned flow paths. And, by connecting the mouth member to the inlet or outlet of the heat receiving unit 110 and the heat dissipation unit 120 , the above-mentioned circulation path is constituted.

In addition, the flow paths 152, 154, and 157 formed in the above-mentioned flow path structure 150 may all have substantially constant flow path cross-sections in the extending direction thereof. Thereby, stagnation of fluid, occurrence of turbulent flow, and the like can be reduced. However, the structure of the flow path is not limited to a structure capable of forming such a constant flow path cross section, and an appropriate flow path structure such as a structure in which a part of the flow path cross section is enlarged may be used.

The above-mentioned flow channel structure 150 also has flexibility as a whole, but in particular, since a certain degree of rigidity can be obtained by the bonding region 150T for bonding flexible films to each other, it can maintain the shape shown in the figure by itself. status. In this case, if the area of the bonding region 150T is increased, the rigidity of the flow channel structure 150 increases, and if the area of the bonding region 150T is reduced, the rigidity of the flow channel structure 150 decreases. Therefore, the rigidity and flexibility of the flow path structure body 150 can be adjusted by using the area of the bonding region 150T. Specifically, in this embodiment, rigidity and flexibility can be adjusted by appropriately configuring the shape of the outer edge, or by providing the opening 159 and the notch (groove) 159'. In particular, the flexibility of a specific portion of the flow channel structure 150 can be improved as needed. For example, in the illustrated example, since the opening 159 and the notch 159' are provided between the flow paths 154 and 157, the flexibility of the area between the two flow paths 154 and 157 can be improved, and the two flow paths can be easily changed. The state of the relative positional relationship of the road. Moreover, conversely, the rigidity of a specific portion can also be increased. For example, in the illustrated example, the stagnation portion 153 is made into a U-shaped structure, etc., and an adhesive region is formed inside the stagnation portion 153, thereby improving the rigidity near the stagnation portion 153 and maintaining its shape to a certain extent. .

In addition, the opening 159 provided at the corner near the flow channel 152 and the opening 159 provided above the stagnation part 153 are engagement holes for supporting the flow channel structure 150 using a not-shown locking member. The flow path structure 150 can also be fixed to the plate and the support plate, or other components such as the above-mentioned heat receiving part 110, heat radiating part 120, cooling fan 130, fluid propelling device 140, etc., by various means such as bonding, welding, welding, etc. superior. In this case, the fixing portion of the flow path structure 150 is preferably the above-mentioned bonding region 150T, so that the supporting and fixing force can be increased.

As shown in FIG. 1 , the above-mentioned flow path structure 150 is connected to other structural parts in the system, and a predetermined amount of fluid is introduced from the fluid inlet 153a to complete the heat exchange system 100 . At this time, if the fluid is a liquid, it flows into the retention part 153 from the fluid introduction port 153a, then flows into the flow paths 152, 154, and 157, and finally fills the inside of the heat receiving part 110 and the heat dissipation part 120. Since the fluid introduction port 153a is formed at the uppermost position of the circulation path, it is possible to fill the entire circulation path with fluid by providing an air discharge portion at an appropriate position. When the liquid is completely filled in the circulation path, the fluid inlet 153a is sealed by bonding (welding) or the like after the air in the stagnation portion 153 is completely driven out.

In this case, it is preferable that the liquid filled in the flow channel structure 150 is limited in advance to an amount smaller than the maximum capacity of the flow channel structure 150 by a certain amount. For example, it is 90% or less of the maximum capacity. Thereby, even if the liquid expands due to a rise in temperature of the liquid, etc., it is possible to prevent the rupture of the channel structure and liquid leakage. In particular, the above-mentioned stagnation portion 153 has a function of retreating the liquid when the liquid expands, thereby preventing an increase in internal pressure.

In addition, the above-mentioned stagnation part 153 also functions as a storage tank for replenishing the liquid into the flow path when the liquid decreases with time. The reduction of the liquid can be reduced to a substantially negligible level by using the flexible films 150X and 150Y having high airtightness and gas barrier properties (water vapor barrier properties) using laminated films as in the present embodiment, but in Since the connection between the channel structure 150 and other components and the interior of each other component cannot be avoided even if the liquid decreases to a small amount, the life of the product can be extended by providing the stagnation part 153 .

In addition, the retention unit 153 also has a function of recovering and retaining gases such as air mixed in the liquid and gases such as various gases released from the liquid. Such a function is absolutely required when the liquid is used as a fluid. Such a gas recovery function can be realized not only by providing the above-mentioned stagnation portion 153 in the middle of the flow path, but also by forming a retreat portion serving as the stagnation portion 153 next to the flow path as described below.

4 and 5 are schematic perspective views and enlarged cross-sectional views showing an enlarged schematic perspective view and an enlarged cross-sectional view of a configuration example of a retreat portion 150w as a specific example of the retention portion 153 that can be provided on a part of the flow path structure 150z of the flow path structure 150. The receding portion 150w is provided beside the flow path structure 150z, and communicates with the flow path structure 150z, and the other part is constituted by a closed non-adhesive area. The opening 150u facing the flow path structure 150z of the receding portion 150w is preferably configured such that its opening cross section is smaller than the flow cross section of the flow path and the cross section of the receding portion 150w. The purpose of the retreat portion 150w is to allow a part of the fluid to flow in through the opening 150u when the pressure in the flow path structure 150z increases due to expansion of the fluid, etc., so as to prevent rupture of the flow path structure 150 and fluid leakage.

In addition, as shown in FIG. 5, when the flow path structure 150 is provided in such a manner that the retreat portion 150w is arranged above the flow path structure 50z, when the liquid is used as a fluid, the liquid contained in the liquid The gas released from the gas or liquid enters the retreat portion 150w, and the gas can be configured in such a state that it does not return into the flow path. This prevents the pump from being unable to discharge the liquid since gas stops entering the pump for conveying the liquid. In addition, in this case, the opening 150u is made smaller to make it difficult for the gas to return to the flow path. However, in order to more reliably prevent the gas from returning to the flow path, a into the one-way valve.

6 and 7 are a schematic perspective view and an enlarged cross-sectional view showing a configuration example of a channel structure having a receding portion 150p as a specific example of the retention portion 153 different from the above. Similar to the above-mentioned retreat portion 150w, the receding portion 150p is provided beside the flow path structure 150z, communicates with the flow path structure 150z, and the other part is constituted by a closed non-adhesive region. However, the opening facing the flow path of the receding portion 150p is relatively large. Specifically, when the receding portion 150p is projected on the flow channel structure 150z, the entire projected surface is configured to be an opening. And, in the inside of the retreat portion 150p, a deformation member 150q whose volume is reduced is accommodated by compression deformation. The deformation member 150q can be constituted by, for example, a flexible bag in which gas is enclosed, a flexible porous member such as sponge, or the like. In addition, the above-mentioned deformable member can be made of a magnet that generates magnetism, can also be made into a heat absorbing body and a heat dissipating body, and can also serve as an adsorbing body for impurities, a deodorizing member, a coloring member, and the like.

In this structure, when the volume and pressure of the fluid are not too high, as shown by the solid line in Fig. 7, since the volume of the deformation member 150q is relatively large, the retreat portion 150p is almost filled by the deformation member 150q, so in the flow path structure The fluid flowing in 150z can circulate in the flow path without any stagnation. Here, when the fluid expands or the fluid pressure is high, the deformation member 150q is compressed by the pressure of the fluid as shown by the dotted line in the figure, whereby a part of the fluid enters the inside of the retreat portion 150p. Thereby, since the pressure rise of the fluid is moderated, it is possible to reduce the breakage of the flow channel structure, the leakage of the fluid, and the like.

FIG. 8 is an exploded perspective view showing a configuration example in which an inner support member 150i serving as a section holding device is arranged inside a flow channel structure 150z constituting the flow channel structure 150 . The inner support member 150i is made of a hollow flexible material extending in the flow path direction inside the flow path structure 150z. In the illustrated example, the inner support member 150i is formed in a spiral shape extending in the direction of the flow path, and more specifically, has a plate surface that supports the portions located in the non-adhesive regions of the flexible films 150X and 150Y. The strip material is wound into a helical structure.

By arranging the above-mentioned inner support member 150i inside the flow channel structure 150z, the flow cross section of the flow channel structure 150z can be maintained from the inside. Since the inner support member 150i is formed in a hollow shape (cylindrical shape), the flow of the fluid in the flow path will not be hindered, and since the inner support member 150i has the flexibility to bend in the direction of the flow path, it will not be disturbed. The flexibility of the channel structure 150 is impaired.

In addition, as the inner support member, it may be erected in a columnar shape in the flow channel structure 150z. In addition, as the section holding means, not only the above-mentioned inner supporting member, but also one arranged outside the flow path structure 150z and held so that one of the flexible films 150X and 150Y located in the non-adhesive region is separated from the other can be used. member, the outer support member. This outer support member is, for example, fixed to the outer surface of the flexible film 150X, and is held so that the outer surface of the flexible film 150X is separated from the portion of the flexible film 150Y facing it, for example, by an arc-shaped support member. constitute.

FIG. 9 is a schematic perspective view showing a configuration example that can be adopted as the structure of the above-mentioned flow channel structure 150 . The flow path structure 150 shown in FIG. 1 is a member that constitutes a flow path connecting the heat receiving part 110 and the heat dissipation part 120, and in the structure shown in FIG. The structure of the temperature-controlled body M is directly arranged outside of . The temperature-controlled body M refers to, for example, a heat generating part such as a CPU chip in a state of being in thermal contact with the heat receiving part 110 shown in FIG. 1 . In this structure, the same function as that of the heat receiving unit 110 shown in FIG. 1 can be realized by the flow channel structure. In particular, since the outside of the predetermined region 150N of the flow channel structure 150z of the flow channel structure is in direct thermal contact with the temperature controlled body M, better heat exchange efficiency can be obtained.

Here, the predetermined region 150N in the illustrated example has a large width so as to be in thermal contact with a larger area of the temperature-controlled body M according to the shape of the temperature-controlled body M. Thereby, heat exchange efficiency can be further improved. In addition, the predetermined region 150N and the temperature-controlled body M may be maintained in thermal contact with each other by an appropriate holding device, and may be fixed to each other by bonding or welding (fusing) using an adhesive material. .

FIG. 10 is a schematic perspective view showing another structural example that can be adopted as the structure of the above-mentioned flow channel structure 150 . In this configuration example, an embedded body 150L made of a magnet or a magnetic body is arranged between the flexible films 150X and 150Y, and is accommodated by an adhesive region. This embedded body 150L is arranged beside the flow channel structure 150z. In this example, at least a part of the temperature-controlled body K is formed of a ferromagnetic material or a magnet, whereby the temperature-controlled body K is adsorbed and held by the embedded body 150L. Therefore, by adsorbing and holding the temperature-controlled body K in the embedded body 150L, the temperature-controlled body K can be easily held in thermal contact with the flow channel structure 150z without providing any other holding means. Also in this configuration, the temperature-controlled body K can be easily separated from the flow path constituting body.

As shown in the above-mentioned examples, the flow path structure of the present invention can be configured to have various functions by sandwiching other members between the flexible films 150X and 150Y. For example, by sandwiching a reinforcing sheet between flexible films, the rigidity of the sandwiched portion can be increased, and by variously setting the shape of the reinforcing sheet, the shape of the flow channel structure can also be specified. In addition, it is slightly mentioned above, but contrary to the above, by providing openings or grooves in a part of the flow channel structure in advance to improve the flexibility of a part of it, it can also be configured to be easily partially bent or folded. status.

FIG. 11 is a plan view showing the structure of a flow channel structure 250 as another example of the flow channel structure. In this channel structure 250, the first ports 251a, 251b, 251c; the second ports 252a, 252b, 252c; and the third ports 253a, 253b, 253c are respectively provided on different peripheral parts. In this example, a plurality of first openings, second openings, and third openings are respectively provided. Furthermore, flow paths 254a, 254b, 254c, 255a, 255b, 256a, and 256b are provided between the respective ports, and these flow paths are configured to communicate between the plurality of ports, respectively.

In this channel structure 250, the channels are connected to each other such that any one of the plurality of ports communicates with all the other ports. Therefore, by appropriately pressing or adhering (welding) to seal between the above-mentioned flow paths, it is possible to easily realize a desired flow path structure. For example, by pressing or bonding (welding) the regions G1 to G5 surrounded by dotted lines in the drawing, the first port 251a and the third port 253a can be communicated, and the first port 251b and the third port 253a can be connected. The state in which the second port 252a and the third port 253b are in communication (state with a branch). Here, the pressing of the above-mentioned regions G1 to G5 can be performed using an appropriate crimping tool. In this case, the channel structure 250 can be returned to its original state. In addition, the regions G1 to G5 may be thermally welded without returning to the original state.

In addition, the flow path structure of this invention is not limited only to the example of the illustration mentioned above, It goes without saying that various changes can be made in the range which does not deviate from the gist of this invention. For example, in the heat exchange system 100 of the above-mentioned embodiment, the structure of the cooling system for cooling the temperature-controlled body not shown is made by using the heat-receiving part 110. Conversely, the heat-dissipating part 120 can also be made to control the temperature. Body heating system.

Also, in the above-mentioned heat exchange system, a plurality of heat receiving parts (heat absorbers) are provided, and these multiple heat receiving parts can also be connected by using the above-mentioned flow path structure. Multiple connection parts. For another example, when the object to be cooled does not have a local high-temperature portion along a wide range like the encapsulation portion of a hard disk, the flow path structure itself may be configured as shown in FIGS. 9 and 10 instead of the above-mentioned heat receiving portion. For the heating part. Thus, there is no need to provide a connection portion to the heat receiving portion. In this case, the metal layer constituting a part of the flexible film functions as a heat conduction layer.

In the present embodiment, by making the flow channel structure as above, in the manufacturing process, the effects of reducing the number of parts, shortening the process, and shortening the lead time can be achieved. Moreover, since it is excellent in softness and flexibility, it can be easily accommodated in various spaces, and especially because it is thin, it can also be arranged in flat passages and the like. Therefore, for example, it is also possible to pass through the hinge portion of a personal notebook computer or the like. Moreover, the cross-sectional area of the flow path can be appropriately changed in the direction of the flow path, or a plurality of flow paths can be integrally formed, and the flow path can be formed into a suitable branch structure such as a trifurcated path or a cross path, and the structure of the flow path can be freely configured. It can be pasted on various structural members, installed various structural parts, or installed along uneven surfaces, etc., and has a remarkable effect of being extremely flexible and adaptable to various situations.

Claims (16)

1, a kind of flow-path constituting body is characterized in that, has 2 oral areas that make fluid flow into or flow out usefulness at least, has to make the stream that is communicated with between this oral area, and this stream constitutes one by the non-bonding region that is limited by the mutual bonding region of pliability film.

2, flow-path constituting body as claimed in claim 1 is characterized in that, described stream utilizes described pliability film and constitutes the state with a plurality of described streams or branch integratedly.

3, flow-path constituting body as claimed in claim 1 is characterized in that, described pliability film is the laminated film that the duplexer by metal level and resin bed constitutes.

4, flow-path constituting body as claimed in claim 1 is characterized in that, has in the way with described stream the delay portion that is communicated with, is made of the non-bonding region in its next door sealing.

5, flow-path constituting body as claimed in claim 4 is characterized in that, is accommodating the deformation element that volume reduces because of compression in described delay portion.

6, flow-path constituting body as claimed in claim 4 is characterized in that, described delay portion is configured in the upper side of described stream.

7, flow-path constituting body as claimed in claim 1 is characterized in that, is provided with the cross section holding device that the flow area to described stream keeps.

8, flow-path constituting body as claimed in claim 7, it is characterized in that, described cross section holding device is to be configured in the inboard supporting member in the non-bonding region of described pliability film or a side of the pliability film that is arranged in described non-bonding region is held in any of the outside supporting member that leaves with the opposing party.

9, a kind of flow-path constituting body, it is characterized in that, at least have 2 oral areas that make fluid flow into or flow out usefulness, have and make the stream that is communicated with between this oral area, at least a portion of this stream by by the pliability film each other or the non-bonding region that limits of the bonding region of pliability film and other member constitute.

10, flow-path constituting body as claimed in claim 9 is characterized in that, a plurality of described streams or have the described stream of branch constitute one by described pliability film.

11, flow-path constituting body as claimed in claim 9 is characterized in that, described pliability film is the laminated film that the duplexer by metal level and resin bed constitutes.

12, flow-path constituting body as claimed in claim 9 is characterized in that, has in the way with described stream the delay portion that is communicated with, is made of the non-bonding region in its next door sealing.

13, flow-path constituting body as claimed in claim 12 is characterized in that, is accommodating the deformation element that volume reduces because of compression in described delay portion.

14, flow-path constituting body as claimed in claim 12 is characterized in that, the non-bonding region of described sealing is configured in the upper side of described stream.

15, flow-path constituting body as claimed in claim 9 is characterized in that, is provided with the cross section holding device that the flow area to described stream keeps.

16, flow-path constituting body as claimed in claim 9 is characterized in that, described other member is tabular component or the block member that has more the synthetic resin of rigidity or metal etc. than described pliability film.

Images