WO2005057120A1 - 熱交換器 - Google Patents
熱交換器 Download PDFInfo
- Publication number
- WO2005057120A1 WO2005057120A1 PCT/JP2004/018461 JP2004018461W WO2005057120A1 WO 2005057120 A1 WO2005057120 A1 WO 2005057120A1 JP 2004018461 W JP2004018461 W JP 2004018461W WO 2005057120 A1 WO2005057120 A1 WO 2005057120A1
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- WO
- WIPO (PCT)
- Prior art keywords
- meandering
- straight pipe
- fin member
- fin
- pipe
- Prior art date
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F1/00—Tubular elements; Assemblies of tubular elements
- F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
- F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
- F28F1/24—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely
- F28F1/32—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely the means having portions engaging further tubular elements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B39/00—Evaporators; Condensers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
- F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
- F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
- F28D1/047—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being bent, e.g. in a serpentine or zig-zag
- F28D1/0477—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being bent, e.g. in a serpentine or zig-zag the conduits being bent in a serpentine or zig-zag
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F1/00—Tubular elements; Assemblies of tubular elements
- F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
- F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
- F28F1/126—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element consisting of zig-zag shaped fins
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/007—Auxiliary supports for elements
- F28F9/013—Auxiliary supports for elements for tubes or tube-assemblies
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F2215/00—Fins
- F28F2215/12—Fins with U-shaped slots for laterally inserting conduits
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F2255/00—Heat exchanger elements made of materials having special features or resulting from particular manufacturing processes
- F28F2255/20—Heat exchanger elements made of materials having special features or resulting from particular manufacturing processes with nanostructures
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F2265/00—Safety or protection arrangements; Arrangements for preventing malfunction
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F2275/00—Fastening; Joining
- F28F2275/02—Fastening; Joining by using bonding materials; by embedding elements in particular materials
- F28F2275/025—Fastening; Joining by using bonding materials; by embedding elements in particular materials by using adhesives
Definitions
- the present invention relates to fluid cooling pipes such as fuel pipes and oil pipes for automobiles and general industries, EGR gas cooling devices, air conditioners for adjusting the temperature and humidity of living spaces, and other heat exchangers. It is an object of the present invention to obtain a heat exchanger having excellent heat exchange performance at a low cost with a simple manufacturing technique and process.
- fluid cooling pipes such as fuel pipes and oil pipes for automobiles and general industries, EGR gas cooling devices, air conditioners for adjusting the temperature and humidity of living spaces, and other heat exchangers.
- a fuel pipe of an automobile an oil flowing through the fuel pipe is connected to a fuel cooler having a tank for storing cooling water, a refrigerant for a car air conditioner, and other refrigerant liquids as disclosed in Patent Document 1.
- Patent Documents 2-5 An air-cooled type that performs cooling by heat exchange is often used.
- Patent Documents 2 and 3 a metal band-like fin member is spirally provided on the outer periphery of a tube main body, or a plate-like fin member is radially provided. Also, in Patent Document 4, a plurality of straight fins made of metal such as aluminum are passed through a plurality of straight pipes, a mandrel is pressed into a pipe body, and the straight pipe is expanded to expand the outer circumference of the straight pipe. Caulking and fixing the fin member to! /, Ru. By connecting the ends of adjacent straight pipes with U-vent pipes, the length of the entire pipe body is lengthened and heat exchange performance is enhanced.
- Patent Documents 2 to 4 the oil is cooled by radiating heat of oil or the like flowing in the pipe body to the outside air via the fin member. Further, those using thin fins as in Patent Document 4 are often used in radiators that use only fuel pipes, indoor units of air conditioners, and the like.
- Patent Document 5 discloses a technique for cooling semiconductors and the like in electronic devices such as computers. This is a heatsink for the heat sink. It has multiple fins protruded by aluminum die-casting to enhance the heat sink heat dissipation characteristics. Utilizing this, there was also a heat exchanger in which a plurality of fins were protruded from the outer periphery of a fuel pipe, an oil pipe, or the like by aluminum die-casting.
- Patent Document 2 JP-A-9-42573
- Patent Document 3 Japanese Patent Application Laid-Open No. 2002-364476
- Patent Document 4 JP 2003-88924
- Patent Document 5 JP-A-2002-64170
- the present invention uses a heat exchanger of an air-cooled type that does not require a tank for a refrigerant liquid or the like by using a simple manufacturing technique and a small number of fin members in a work process.
- the aim is to make it easy to manufacture with simple technologies and processes that are easy to use, to increase productivity and to obtain inexpensive products.
- the length of the pipe body in heat exchange The length of the pipe is made longer, and even when the pipe length is lengthened in this way, a compact, lightweight product is obtained without bulk.
- the present invention is directed to a fin member in which a plurality of fins are arranged in parallel and a plurality of engaging concave grooves are provided in parallel on both end surfaces facing each other at regular intervals. And a plurality of straight pipes for arranging in the engagement grooves of the fin members are arranged in parallel with an opposing gap therebetween, and a pair of meandering parts in which the plurality of straight pipes are connected by a bent part are formed.
- a meandering pipe main body in which the one meandering part and the other meandering part are opposed to each other via a gap and connected by a connecting pipe, and the one meandering part and the other meandering part of the meandering pipe main body are connected to each other.
- the fin member is inserted and arranged in the insertion gap of the fin member formed between the meandering portion, and the straight pipe portion of one meandering portion is arranged in the engagement groove on one end surface of the fin member.
- a straight pipe portion of the other meandering portion is arranged and fixed in the engagement groove on the end face.
- the second invention provides a plurality of fin members in which a plurality of fins are arranged side by side and a plurality of engaging grooves are provided in parallel at both ends facing each other at a constant interval, and the engaging grooves of the fin members are provided.
- a plurality of straight pipes are arranged in parallel through the insertion gap of the fin member, and a pair of meandering parts, which are connected by a bent part, are connected to each other through an opposing interval.
- a meandering tube main body which is arranged to face each other and has the one meandering portion and the other meandering portion connected to each other by a connecting pipe, and the straight portion facing the one meandering portion and the other meandering portion of the meandering tube main body is formed.
- a pair of fin members are inserted and arranged in a gap between a plurality of pairs of adjacent straight pipe portions and straddling one meandering portion and the other meandering portion in the insertion gap.
- One straight pipe portion is disposed in the engagement groove on one end surface of the To those formed by the fixed and arranged the other straight pipe portion.
- the meandering part and Z or the meandering part on the other side have fin members on the outer surface of the facing part.
- the outer surface of the straight pipe portion may be provided and fixed in the engagement groove of the fin member.
- the one meandering portion and the other meandering portion are provided with fin members on at least one outer surface of straight pipe portions arranged at both ends of a plurality of pairs of straight pipe portions, and the fin members are engaged with each other.
- the outer surface of the straight pipe portion may be provided and fixed in the concave groove.
- the fin member is formed by arranging a plurality of plate-like fins in parallel, and forming a pair of each plate-like fin. Engaging concave grooves may be provided at opposite end edges.
- the fin member may be formed of a corrugated fin obtained by bending a plate material into a corrugated shape, and engaging concave grooves may be provided on opposite end surfaces of the corrugated fin on the bent surface side.
- the fin member may be formed of a corrugated fin obtained by bending a plate material into a corrugated shape, and engaging concave grooves may be provided on both end faces of the non-bent side of the corrugated fin.
- the engagement groove may be formed by cutting the fin member into a concave shape.
- the engagement concave groove may be formed by pressing and deforming the fin member in a concave shape.
- the concave pressing deformation of the fin member is performed such that bulging flanges protruding on both sides of each fin in accordance with the pressing deformation are made to approach or abut each other between adjacent fins.
- the flange may be brought into surface contact with the outer peripheral surface of the meandering pipe main body.
- a straight pipe portion formed wider than the formation width of the engagement groove may be press-fitted into the engagement groove.
- the straight pipe portion has a flat cross section and a flat short diameter portion is formed to have a smaller diameter than the formation width of the engagement groove.
- the meandering pipe main body is configured such that the straight pipe part of the one meandering part and the straight pipe part of the other meandering part are curved in an arc shape such that the opposing surface bulges inward, and the straight pipe curved in the arc shape is formed.
- the portion may be linearly engaged with the engaging groove by the engaging means.
- the meandering pipe main body may be configured so that the bent portions of the one meandering portion and the other meandering portion facing each other are sandwiched and fixed by a sandwiching member.
- the fin members provided on the outer surfaces of the one meandering portion and the Z or the other meandering portion may be pinched and fixed by the holding member.
- meandering pipe main body and the fin member may be arranged such that, after the straight pipe portion is disposed in the engagement concave groove, the contact portions thereof are filled with a molten resin and adhered to each other. .
- the meandering pipe main body may be provided with a resin coating layer on the outer peripheral surface.
- the resin coating layer disposed on the outer peripheral surface of the meandering pipe main body is a thermoplastic resin material. After disposing the straight pipe portion in the concave groove, the resin film may be melted by heating, and the resin coating layer may be melt-bonded to the engaging groove of the fin member.
- the meandering pipe main body and the fin member may be subjected to a coating treatment on the outer surface after the straight pipe portion is provided in the engagement concave groove.
- the meandering pipe main body is configured such that the one straight pipe side of the connecting pipe between the one meandering part and the other meandering part is bent outward, and the connecting pipe is formed in a circumferential direction with respect to the axial direction of the straight pipe part.
- the distance between the one meandering part and the other meandering part may be reduced, and the straight pipe parts of the one meandering part and the other meandering part may be arranged in parallel with each other.
- the fin member may be provided with an inclined surface by bending the end portion side of each fin.
- a plurality of flow holes may be formed in each fin.
- the present invention is configured as described above, and the heat exchanger is formed by engaging the straight pipe portion of the meandering pipe main body with the engaging concave grooves formed in the opposite end faces of the fin member.
- the manufacture is easier, the durability of the product is improved, and the fin member is less likely to be damaged, and the manufacture becomes easier. Further, simplification of the manufacturing technology and the manufacturing process makes it possible to reduce the manufacturing cost and commercialize the product at low cost.
- the length of the pipe is increased by meandering the pipe and the flow path of the fluid flowing inside is lengthened, the frequency of contact between the internal fluid and the heat transfer surface increases, and the heat transfer surface of the pipe body is increased.
- the internal fluid and the external fluid can efficiently release and absorb heat, and heat exchange with excellent heat exchange performance can be obtained.
- the use of the meandering pipe main body makes it possible to obtain a compact product that is not bulky in the vertical and horizontal directions, and has a high degree of freedom in layout that can be installed even in a narrow place such as under the floor of the vehicle body or the back of the device.
- FIG. 1 is a perspective view of a heat exchanger according to a first embodiment.
- FIG. 2 is a plan view of a meandering tube main body provided with a meandering part and the other meandering part. ⁇ Circle around (3) ⁇ Perspective view of a state where a fin member is placed on the other meandering portion.
- FIG. 4 A perspective view showing a process of bending the connecting pipe and disposing the meandering portion on one end surface side of the fin member.
- FIG. 5 is an enlarged sectional view taken along line A—A in FIG. 2.
- FIG. 13 is a partial perspective view of a fin member according to a seventh embodiment.
- FIG. 14 is an enlarged cross-sectional view of the engagement concave groove of the fin member of FIG. 13 and a straight pipe portion provided therein.
- FIG. 15 is a sectional view taken along the line BB of FIG. 14.
- FIG. 17 is a plan view of FIG.
- FIG. 19 is a cross-sectional view of heat exchange in Example 10.
- FIG. 20 is a plan view of FIG. 19.
- FIG. 21 is a partially enlarged cross-sectional view of a straight pipe portion in a meandering pipe main body according to Embodiment 11 provided with an uneven portion.
- FIG. 21 A perspective view of heat exchange of Example 15.
- FIG. 27 A perspective view of a fin member used in the heat exchange of the seventeenth embodiment.
- FIG. 28 A perspective view of a fin member used in heat exchange in Example 18.
- FIG. 1 is a perspective view of the heat exchanger according to the first embodiment, in which a fin member is disposed in an insertion gap formed between one meandering part and the other meandering part.
- 2 to 6 show a manufacturing process of the heat exchanger of the first embodiment.
- FIG. 2 is a plan view of a meandering pipe main body in which a pair of meandering parts are formed in line symmetry.
- FIG. 3 is a perspective view in which a fin member is placed on the other meandering portion, and a straight pipe portion of the other meandering portion is provided in an engagement groove on the other end surface of the fin member.
- FIG. 4 is a perspective view showing a state in which the connecting pipe is bent and one meandering part is arranged on one end surface side of the fin member.
- FIG. 5 is an enlarged cross-sectional view taken along line AA of FIG. 2, and shows the vicinity of a boundary between a straight pipe portion having an elliptical cross-section and a bent portion having a circular cross-section.
- Fig. 6 is an enlarged sectional view of the engaging groove and the straight pipe portion provided in the engaging groove.
- FIG. 7 is an enlarged cross-sectional view of the vicinity of the boundary between the straight pipe portion and the bent portion of the meandering pipe main body according to the second embodiment, in which a separately formed flat straight pipe portion is connected to a circular bent portion. It is fixed.
- FIG. 8 is an enlarged sectional view of the third embodiment immediately after the straight pipe portion is disposed in the engagement groove.
- FIG. 9 is an enlarged cross-sectional view showing a state where the straight pipe portion is expanded and is firmly fitted into the engagement groove.
- FIG. 10 is a perspective view of the heat exchanger according to the fourth embodiment, in which the straight pipe portion and the bent portion of the meandering pipe main body are formed into a flat shape having a rectangular cross section.
- FIG. 11 is a perspective view of the heat exchanger of the fifth embodiment. The fin member is formed by arranging plate-like fins in parallel.
- FIG. 12 is a perspective view of the heat exchanger of the sixth embodiment. Each fin of the fin member has a plurality of flow holes for turbulently flowing the flow of the external fluid.
- FIG. 13 is a partial perspective view of the fin member according to the seventh embodiment.
- FIG. 14 is an enlarged cross-sectional view showing a state in which a straight pipe portion is provided in the engagement groove of the fin member of FIG. 13, and FIG.
- FIG. 15 is a cross-sectional view taken along line BB of FIG.
- FIG. 16 is a cross-sectional view of the heat exchanger according to the eighth embodiment, in which a fin member is also provided on the outer surface of the meandering portion, and the fin member is fixed to the meandering tube main body by a fixing member.
- FIG. 17 is a plan view of Example 8 heat exchange.
- FIG. 18 is a perspective view of the heat exchanger of the ninth embodiment, in which fin members are arranged in a plurality of insertion gaps formed hierarchically between adjacent straight pipe portions.
- Figure 19 shows the implementation In the cross-sectional view of the heat exchange in Example 10, fin members are provided in the insertion gap between the straight pipe portions, and fin members are also provided on the outer surfaces of the pair of straight pipes at the uppermost ends. It is fixed to the meandering pipe main body by a fixing member.
- FIG. 20 is a plan view of the heat exchange of the tenth embodiment.
- FIG. 21 is a partially enlarged cross-sectional view of the straight pipe portion in the case where the meandering pipe main body is provided with an uneven portion.
- the contact portion between the engaging groove and the straight pipe portion is filled with a molten resin.
- the two-dot chain line indicates the resin material fillet when they are bonded to each other, or when the serpentine pipe body with the resin film layer is connected to the fin member and the resin film layers are bonded to each other. Indicated by
- FIG. 22 is a perspective view of the heat exchanger of the fifteenth embodiment, in which the facing distance between the one meandering part and the other meandering part is reduced to make the product thinner.
- FIG. 23 is a plan view of a meandering pipe main body in which the positions of the meandering part and the meandering part are shifted from each other.
- FIG. 24 is a perspective view and a plan view of a state in which a connecting pipe is bent so that one meandering part and the other meandering part face each other.
- FIG. 23 is a plan view of a meandering pipe main body in which the positions of the meandering part and the meandering part are shifted from each other.
- FIG. 24 is a perspective view and a plan view of a state in which a connecting pipe is bent so that one meandering part and the other meandering part face each other.
- 25 is a perspective view of the meandering pipe main body in a state where the facing distance between the one meandering part and the other meandering part is reduced by twisting the curved part of the connecting pipe, a plan view thereof, and a perspective view of the fin part. .
- FIG. 26 is an enlarged perspective view showing an engagement state between the fin member and the straight pipe portion in the heat exchange of Example 16, and shows the corrugated fin member on the side of the non-folded portion. Are provided with engaging concave grooves on both end surfaces.
- FIG. 27 is a perspective view of a fin member used in the heat exchange of the seventeenth embodiment, in which the end of the fin is bent to provide an inclined surface.
- FIG. 28 is a perspective view of a fin member used in the heat exchanger of Example 18 in which a plurality of circular flow holes are provided in each fin using a punching plate.
- Example 1 in which the heat exchange of the present invention is implemented as a fuel pipe disposed under the floor of an automobile will be described in detail with reference to Figs. 1 to 6.
- (1) is a meandering pipe main body, A pair of straight pipes (2) arranged in parallel with a desired facing space 16) and a bent part (3) connecting the straight pipes (2) are formed.
- the meandering portions (11X12) are arranged to face each other via the insertion gap (17) of the fin member (5).
- this one meandering part (11) and the other meandering A plurality of fins (4) are arranged side by side in the insertion gap (17) formed between the fins (12) and a plurality of rectangular engaging recesses at regular intervals on the opposite end faces (6) and (7). Inserting and disposing the fin member (5) provided with the groove (8), and disposing and fixing the straight pipe part (2) in the engaging concave groove (8), the heat exchanger (10) Has formed.
- the meandering pipe main body (1) is formed by bending a single metal pipe formed of steel, stainless steel, copper, aluminum, a copper-based alloy, an aluminum-based alloy, or the like to form a fin member (see FIG. 2).
- One meandering part (11) provided on one end face (6) side of 5) and the other meandering part (12) provided on the other end face (7) side are formed in line symmetry.
- the pair of meandering parts (11X12) are composed of a plurality of straight pipes (2) arranged in parallel with opposing gaps 16) and a bent part (3) connecting the straight pipes (2).
- the meandering part (11) and the other meandering part (12) are connected via a connecting pipe (13).
- This connecting pipe (13) is formed to be longer than the distance between the opposing engaging grooves (8) of both end faces (6) (7) of the fin member (5), and is connected to both end faces (6) (7).
- the opposing arrangement of the pair of meandering portions (11X12) can be performed without any trouble.
- the meandering pipe main body (1) has only a straight pipe portion (2), and the cross-sectional shape in the direction perpendicular to the pipe axis as shown in FIGS. 2, 6 (a) and 6 (b) is an elliptical flat shape.
- the elliptical straight pipe part (2) is formed into a shape, and the long diameter part of the ellipse is positioned in the width direction of the engagement groove (8) as shown in FIGS. 6 (a) and (b).
- the diameter portion is disposed so as to be located at the bottom of the engagement groove (8) and in the direction of the opening.
- the engaging groove (8) is formed deeper than the short diameter portion of the straight pipe portion (2), and the entire straight pipe portion (2) is engaged. It may be inserted and arranged in the concave groove (8), or the height of the engaging concave groove (8) as shown in FIG. May be formed to be shallow with approximately half the size of the above, and the lower half of the straight pipe portion (2) may be placed and disposed in the engagement groove (8).
- the bent portion (3) and the connecting pipe (13) are not processed into any flat shape, and the cross-sectional shape is circular.
- the end of the meandering pipe main body (1) has a connecting pipe (15) to a rubber hose or the like, and this connecting pipe (15) is not processed into a flat shape, and has a circular cross section. Spool processing or valley processing may be applied to prevent slippage.
- FIG. 5 is a sectional view taken along the line A—A of FIG. 2, that is, in the large diameter direction of the oval straight pipe portion (2) near the boundary between the straight pipe portion (2) and the bent portion (3).
- the fin member (5) on which the meandering pipe main body (1) is disposed is made of one piece of steel, stainless steel, copper, aluminum, copper-based alloy, or aluminum-based alloy.
- a metal plate made of metal or the like is formed into a corrugated shape via a plurality of bent surfaces (14), and a plurality of fins (4) are arranged in parallel.
- An elliptical engagement groove (8) for disposing a straight pipe portion (2) is formed on opposite end surfaces (6) and (7) of the fin member (5) provided with the bent surfaces (14), The same number of straight pipes (2) as the number of straight pipes (2) is provided at the same distance from the opposite pipe 16).
- the engaging concave grooves (8) are formed so that both end faces (6) and (7) of the fin member (5) are individually formed into elliptical shapes corresponding to the outer shape of the straight pipe portion (2). It is formed by cutting in a concave shape.
- the step of connecting and fixing the fin member (5) and the meandering pipe main body (1) as described above will be described.
- the other meandering part (12) of the meandering pipe main body (1) The fin member (5) is placed on the upper surface of the fin member (5), and the straight pipe portion (2) of the meandering portion (12) is inserted into the engagement groove (8) of the other end surface (7) of the fin member (5).
- the long diameter portion is disposed in the width direction of the engagement groove (8), and the short diameter portion is disposed laterally long so as to be located in the opening direction with the bottom of the engagement groove (8).
- the meandering pipe main body (1) is folded in two as shown in FIG. And the meandering part (11) faces one end face (6) of the fin member (5).
- the straight pipe portion (2) of the one meandering portion (11) is inserted into the engagement groove (8) of the one end surface (6) with its long diameter as shown in FIGS. 6 (a) and 6 (b).
- the part is located horizontally in the width direction of the engaging groove (8), and the short diameter part is disposed laterally long so as to be located at the bottom and the opening direction of the engaging groove (8).
- the engagement groove (8) is provided in an elliptical shape corresponding to the outer shape of the straight pipe part (2), the arrangement of the straight pipe part (2) in the engagement groove (8) is wobble. It is possible to carry out the operation stably without the occurrence of the like, and it comes into surface contact with the straight pipe portion (2) with the contact area of the thickness of the engaging groove (8). Therefore, good heat conduction between the straight pipe portion (2) and the fin member (5) can be achieved through the contact portion between the straight pipe portion (2) and the engaging concave groove (8).
- the connection between the meandering pipe main body (1) and the fin member (5) is fixed by the meandering part (11) and the other meandering part (12) in the direction of the insertion gap (17). It is performed only by the pinching force.
- the fixing stability between the meandering pipe main body (1) and the fin member (5) is enhanced, and the surface contact between the straight pipe part (2) and the engaging concave groove (8) is ensured, so that the heat conductivity is improved.
- the bent portion (3) of the one meandering portion (11) and the other meandering portion (12) are connected to a clip (18) as a holding member as shown in FIG. It is pinched and fixed.
- the pinching and fixing by the clip (18) makes it easy to release the fixing of the straight pipe portion (2) to the engaging groove (8), so that the meandering pipe main body (1) and the fin member (5 ) Can be more firmly fixed, and the vibration resistance against vibration of the vehicle body or the flow of the fluid where the heat exchange ⁇ ) is installed can be improved.
- the straight pipe portion (2) comes into strong surface contact with the engagement concave groove (8), so that the thermal conductivity between the straight pipe portion (2) and the fin member (5) can be increased.
- the clip (18) may be connected to a bracket or the like for fixing to the vehicle body or the like, and the heat exchanger do) may be fixed to the vehicle body.
- a bracket for fixing the heat exchange ⁇ ) to the vehicle body and other clamp members may be used as a fin member (5) and a holding member for the meandering pipe main body (1).
- the pipe through which the fluid such as fuel flows is the meandering pipe main body (1) that is tortuous as described above, the flow path of the fluid must be lengthened. Can be. Further, by disposing the fin member (5) in the meandering pipe main body (1), the heat transfer area can be increased, and the heat-dissipating and absorbing characteristics of the entire heat exchange ao) can be improved. By flowing an external fluid in parallel with the heat transfer surface of each fin (4) of the fin member (5), the fluid flowing through the meandering pipe body (1) through each fin (4) is Efficient heat exchange with the fluid becomes possible.
- the meandering pipe main body (1) provided with a pair of meandering portions (11X12) formed in a meandering shape in advance is folded in half, and the fin member (5) is sandwiched between the main body and the fin member (5).
- the connection of the meandering pipe main body (1) can be fixed. Therefore, it is possible to manufacture the heat exchanger (10) with a simple manufacturing technique and a small number of working steps, thereby improving the productivity of the heat exchanger (10) and implementing it at low cost.
- each of the fins (4) is cut into the engaging concave groove (8) for disposing the straight pipe portion (2) on both end surfaces (6) and (7) of the fin member (5). Therefore, the work is easier than inserting a tube body by providing a through hole in a thin fin as in the conventional patent document 4, and deformation and breakage of the fin member (5) are less likely to occur. It will be. Also, in this conventional technique, it was necessary to expand the straight pipe inserted through the thin fins and then connect the U vent pipe.In the first embodiment, however, one metal pipe was bent into a meandering shape. To form the meandering pipe body (1) for brazing and welding. The labor and time of connection can be saved, and there is no fear of fuel leakage or the like. In addition, the fixing between the engagement groove (8) and the straight pipe portion (2) is also performed by the clamping force of the one meandering portion (11) and the other meandering portion (12) and the lip (18). Manufacturing work that requires less time for expanding the pipe is facilitated.
- the fin member (5) of Example 1 is formed of a corrugated fin obtained by bending a single metal plate, the workability that the fin (4) does not disperse during production is prevented.
- the impact resistance of the fin member (5) is improved, and the durability of the heat exchange ao) can be improved.
- the heat transfer area of the fin member (5) can be increased by the provision of the plurality of bent surfaces (14), and the heat exchange performance with the external fluid can be improved.
- the meandering pipe body (1) which is a meandering metal pipe, is used, the heat exchange ao) can be made compact without being bulky vertically and horizontally, and it is lighter than aluminum die-cast products. You can get the product.
- this heat exchange ⁇ (10) as a fuel pipe, an excellent cooling effect on the fuel can be obtained, and it is necessary to provide a separate means for cooling the fuel such as a cooler unit.
- the manufacturing cost of the car can be reduced.
- it can be installed in a narrow space such as under the floor, and the type of vehicle is not limited, so that a product excellent in layout and versatility can be obtained.
- the straight pipe portion (2) of the meandering part (11) and the straight pipe part (2) of the other meandering part (12) are previously formed in an arc shape so that the opposing surface bulges inward.
- the engagement means is opposed to the one meander portion (11) and the other meander portion (12).
- the bent part (3) is clamped and fixed to each other by a clipping member (18) or the like so that the straight pipe part (2) is linearly arranged in the engaging groove (8). May be. Further, after the straight pipe portion (2) curved in an arc shape is disposed in the engagement groove (8), as another different engagement means, the straight pipe portion (2) is linearly deformed by applying internal pressure. Alternatively, they may be fitted and fixed in the engaging concave grooves (8). By using such means, the straight pipe portion (2) is prevented from bulging outward, and the straight pipe portion (2) is linearly disposed in the engagement groove (8). And good thermal conductivity between the straight pipe portion (2) and the fin member (5) can be obtained.
- Example 2
- a meandering pipe main body (1) in which a single metal pipe is bent and a plurality of straight pipe sections (2), bent sections (3), and connecting pipes (13) have the same force.
- the bent part (3) and the connecting pipe (13) are formed by a U vent pipe, and the plurality of straight pipe parts (2) are formed into a single straight pipe. It is more formed.
- the plurality of straight pipes (2) are arranged via opposing gaps 16), and the straight pipes (2) are connected by bending parts (3) and connected to each other by brazing, welding, or the like.
- a pair of meandering portions (11X12) are formed.
- a pair of meandering portions (11X12) arranged facing each other via the insertion gap (17) of the fin member (5) are connected by a connecting pipe (13).
- the straight pipe portion (2) is formed into an elliptical shape as in the first embodiment to facilitate the arrangement in the engagement groove (8).
- FIG. 7 shows an enlarged cross-sectional view of a connection portion between the straight pipe portion (2) and the bent portion (3) and the like in the second embodiment, which is connected to the straight pipe portion (2).
- the connection with the pipe (13) has a similar structure.
- the bent portion (3) or the distal end of the connecting pipe (13) is inserted and arranged in the straight pipe portion (2), and the force for connecting and fixing each other.
- the distal end of the straight pipe portion (2) may be formed so as to be insertable in the bent portion (3) or the connecting pipe (13), and may be connected and fixed to each other.
- the fin member (5) is inserted into the insertion gap (17) of the fin member (5) formed between the one meander portion (11) and the other meander portion (12) of the meandering pipe main body (1) thus formed. 5), and each straight pipe portion (2) is disposed in the engaging groove (8) provided on both end surfaces (6) (7) of the fin member (5).
- the heat exchanger (10) may be formed by sandwiching and fixing the opposed bent portion (3) of the meandering portion (12) with the meandering portion (12) with a sandwiching member such as a clip (18).
- the meandering pipe main body (1) before disposing the meandering pipe main body (1) on the fin member (5), the straight pipe part (2) and the bent part (3) or the connecting pipe (13) made of a U vent pipe are connected. Can be connected, so that the fin member (5) is It does not become a nuisance, and can easily perform operations such as brazing and welding, and can also easily perform leak inspection and the like at the connection.
- the meandering pipe main body (1) can be obtained only by combining the existing straight pipe and the u-vent pipe, and the straight pipe section (2) is required for disposition in the engaging groove (8). Even when performing flattening, it can be formed before connection with the bent portion (3) or the connecting pipe (13), and work such as flattening is facilitated.
- the straight pipe portion (2) is fixed to the engaging groove (8) by the clamping force of the one meandering portion (11) and the other meandering portion (12), It is performed with the clamping force by (18).
- the straight pipe portion (2) when the straight pipe portion (2) is disposed in the engagement groove (8), as shown in FIG.
- the straight pipe portion has an elliptical shape such that the minor diameter portion of the ellipse has a smaller diameter than the width of the engagement groove (8) and the major diameter portion of the ellipse has a diameter greater than the width of the engagement groove (8).
- the long diameter portion of the ellipse as shown in FIG. It is arranged to be located at.
- the short diameter portion located in the width direction to the engagement groove (8) is smaller in diameter than the formation width of the engagement groove (8), the straight pipe portion to the engagement groove (8) is formed.
- the arrangement work of (2) can be easily performed without requiring a strong pressing force or the like.
- each straight pipe part (2) of the one meandering part (11) and the other meandering part (12) and the inner circumference of the engagement concave groove (8) A fin member (5) is fixed between them by only the pinching force in the direction of the insertion gap (17) by the one meandering part (11) and the other meandering part (12).
- the inside of the meandering pipe main body (1) is expanded by applying pressure by appropriate means, so that the outer circumference of the straight pipe portion (2) as shown in FIG. It fits tightly around the circumference, enabling a strong connection and fixation between the meandering pipe main body (1) and the fin member (5), and the contact area between the straight pipe part (2) and the engaging groove (8).
- the heat conductivity between the straight pipe portion (2) and the fin member (5) can be increased. Further, the fitting force between the straight pipe portion (2) and the engaging groove (8) allows the meandering pipe main body (1) and the fin member (5) to be used without using a holding member such as a clip (18). The connection between the meandering pipe main body (1) and the fin member (5) can be made firmly, and the number of parts can be reduced. A stronger and more stable connection is possible.
- the shape of the engaging groove (8) can be easily formed by making it rectangular as shown in FIGS.
- the engaging groove (8) by forming the engaging groove (8) into an elliptical or elliptical shape corresponding to the outer shape of the straight pipe part (2), the contact area between them can be increased, The thermal conductivity between the straight pipe portion (2) and the fin member (5) can be further increased.
- the straight pipe portion (2) may be formed in a rectangular shape corresponding to the engagement groove (8). Even when the straight pipe portion (2) is rectangular, the short diameter portion is made smaller in diameter than the formation width of the engagement groove (8), and the long diameter portion is made larger in diameter than the formation width of the engagement groove (8). After being arranged vertically in the engagement groove (8), the straight pipe portion (2) is expanded to be fitted and fixed firmly in the engagement groove (8).
- the fixing of the straight pipe portion (2) and the engaging groove (8) is performed by a clamping member such as a clip (18).
- the straight pipe portion (2 ) is slightly larger than the width of the formation of the engagement groove (8). It is possible to omit a pipe expanding operation which can be performed even if the straight pipe portion (2) having a large diameter is press-fitted into the engaging concave groove (8) and fixed.
- the clip (18), the clamp member, and other holding members sandwich and fix the bent portion (3) opposite the meandering portion (11) and the meandering portion (12).
- the connection stability between the serpentine pipe body (1) and the fin member (5) can be further improved.
- the straight pipe portion (2) of the meandering pipe main body (1) is formed in an elliptical flat shape.
- the part (2) and the bent part (3) are formed into a rectangular flat shape.
- the engaging groove (8) of the fin member (5) in which the rectangular straight pipe portion (2) is disposed is also formed in a rectangular shape corresponding to the outer periphery of the straight pipe portion (2).
- the short diameter portion is formed to have a smaller diameter than the formed width, so that the straight pipe portion (2) can be easily arranged in the engagement groove (8).
- the bent portion (3) is formed in the same rectangular shape as the straight pipe portion (2), thereby facilitating flattening of the meandering pipe main body (1).
- the fin members (5) are formed by corrugated fins, and the plurality of fins (4) are connected to each other. May be used to form the fin member (5).
- An example is Embodiment 5 shown in FIG. 11, in which a plurality of plate-like fins (4) are arranged in parallel to form a fin member (5), and the opposite end faces (6 ) (7) is cut into a plurality of concave portions, and a plurality of engaging concave grooves (8) are provided in parallel.
- flat straight pipe portions (2) of a pair of meandering portions (11X12) were disposed in the same manufacturing process as in Example 1. Thereafter, the straight pipe portion (2) is firmly fitted and fixed in the engagement concave groove (8) by expanding the pipe.
- the heat exchanger (10) of the fifth embodiment is used as a fuel pipe, It is fixed below by a clamp member or the like, and the clamp member is also used as a holding member for holding and fixing the opposed bent portions (3) of the pair of meandering portions (11) and (12).
- This dual use can reduce the number of parts and improve work efficiency.
- This holding member is composed of a board (20) to be fixed under the floor, and a bolt (21) having a head portion larger in diameter than the bent portion (3). By inserting the bolts (21) into the board (20) by screwing them into the bent parts (3), the opposed bent parts (3) are pinched and fixed, and the fin member (5) and the meandering pipe are fixed. The strength of connection and fixation with the main body (1) can be increased.
- the heat exchanger (10) is arranged under the floor by fixing the board (20) under the floor with a separate bolt (22). Further, a pair of connecting pipes (15) provided at both ends of the meandering pipe main body (1) are sandwiched and fixed by clips (18), thereby stabilizing the connecting pipe (15).
- each fin (4) is provided with a plurality of rectangular flow holes (23) through which an external fluid can pass.
- the heat exchanger (10) that can be installed can be arranged in any direction, and the layout is improved.
- the formation of the flow holes (23) causes turbulence of the external fluid flowing around the fins (4), and further enhances the heat exchange performance between the fins (4) and the external fluid by separating the boundary layer. Can do things.
- the flow holes (23) may be formed in parallel between the adjacent fins (4), or may be formed at appropriately shifted positions to promote turbulence of the external fluid. May be.
- the shape of the flow hole (23) is not limited to a rectangle, but may be a circular, oval, or oblong flow hole (23), or a polygon such as a star, gear, triangle, pentagon, or the like.
- the through-hole (23) may be formed in any other shape, and the shape and number of the through-hole (23) which may be provided only once or plurally in each fin (4) are acceptable. What is it.
- both end surfaces (6) and (7) of each fin (4) are cut out in a concave shape to engage the engaging groove (8).
- the contact area force between the fin member (5) and the straight pipe portion (2) is only as large as the thickness of the S fin member (5). Therefore, in order to further enhance the thermal conductivity between the fin member (5) and the straight pipe portion (2), a spacer or the like is disposed in a gap between the engagement grooves (8) of each fin (4).
- the heat transfer between the fin member (5) and the straight pipe portion (2) is performed through the spacer.
- the spacer may increase the number of parts and increase the mounting work, in the embodiment 7 shown in FIGS. 13 to 15, a part of the fin (4) is replaced with the spacer. I also use it.
- Example 6 For use as a spacer, in Example 6, the fins (4) were not cut off, and the end faces (6) and (7) of the fin member (5) were pressed and deformed in an arc shape to form a spacer. A concave groove (8) is formed. Along with this pressing deformation, both end surfaces (6) and (7) of the fins (4) are crushed, and bulging flanges (24) protrude on both sides of each fin (4). The bulging flange (24) is brought close to or in contact with the adjacent fins (4), and the straight pipe portion (2) is arranged between the engagement grooves (8) of the fins (4). It is formed so as to close the gap or the force for reducing the gap of the installation portion.
- the bulging flange (24) is formed in this manner, and the wide inner peripheral surface of the bulging flange (24) is brought into surface contact with the outer peripheral surface of the straight pipe portion (2) as shown in FIGS.
- the heat exchange performance of the heat exchange (10) can be further improved, and the number of parts and the labor for mounting can be reduced, and the cost can be reduced.
- both end surfaces (6) and (7) of the fins (4) of the fin member (5) formed of corrugated fins are pressed and deformed.
- the engagement concave grooves (8) may be provided by pressing and deforming both end surfaces (6) and (7).
- the plate-like fin is deformed in a plane to form a bulging flange (24). The heat transfer area is increased, the heat conductivity is increased, and a heat exchanger (10) having excellent heat exchange performance can be obtained.
- a fin member (25) is further provided on the outer surface of the meandering portion (11).
- This fin member (25) is formed of corrugated fins like the fin member (5) disposed in the insertion gap (17).
- the height of the fin member (5) is smaller than that of the fin member (5) inserted in (17) so that the heat exchange ao) does not become too bulky.
- the engaging groove (8) of the fin member (25) disposed on the outer surface is formed as shown in Fig. 6 (b), and the straight pipe part (2) of the meandering part (11) is formed.
- this straight pipe (2) is expanded, etc., so that the straight pipe (2) is tightly fitted into the engaging groove (8), and one-sidedly meanders with the fin member (25). (11).
- the fin member (25) arranged on the outer surface of the meandering part (11) and the fin member (5) arranged in the insertion gap (17) are more securely connected and fixed to the meandering pipe main body (1).
- the fin member (25) and the bent portion (3) are clamped and fixed by the clamping member. As shown in FIGS.
- a fixing belt (26) made of metal or the like is disposed on the upper surface of the fin member (25) in parallel with the straight pipe portion (2) as shown in FIGS.
- a support plate (30) wider than the opposing gap 16) in (2) is bridged between adjacent straight pipe sections (2) for the purpose of clamping.
- Flanges (27) provided at both ends of the fixed belt (26) are laminated on the support plate (30), and the long plate is inserted through the flange (27) and the support plate (30).
- the fin member (25) is firmly fixed to the meandering part (11) by screwing a simple bolt (21) to the substrate (20) arranged on the lower surface of the meandering part (12).
- the fin member (25) is not only fixed firmly to the meandering pipe main body (1) by the holding and fixing by the holding member, but also the one meandering part (11) and the other meandering part (12), and the insertion thereof.
- the fin member (5) disposed in the gap (17) is strongly pinched and fixed, so that heat exchange performance can be enhanced.
- the heat exchanger (10) can be stably installed.
- the heat transfer area of the heat exchanger (10) increases, Almost the entire straight pipe portion (2) of (11) is covered with the S fin members (5) and (25). Therefore, the heat of the fuel flowing in the straight pipe portion (2) is efficiently transferred through the fin members (5) in the insertion gap (17) and the fins (4) of the outer fin member (25). As a result, heat can be radiated to the external fluid, and the effect of cooling the fuel can be further improved.
- the meandering part (11) is covered and protected, The impact resistance against stepping stones and the like is improved, and the meandering pipe main body (1) can be prevented from being damaged.
- the fin member (25) When the fin member (25) is provided on the outer surface of the one meander portion (11), the other end surface (7) of the fin member (25) and the fin member provided on the inner surface of the one meander portion (11) are provided.
- the fin members (25) and (5) are engaged with each other by forming the dimensions so that the one end surface (6) of the member (5) does not come into contact with and slightly create a gap as shown in FIG.
- the V between the straight pipe part (2) and the fin member (25) (5) is in wide contact with the straight pipe part (2) and the fin members (25) (5) so that the straight pipe part (2) does not rise from the groove (8). Good thermal conductivity can be maintained.
- the flange (27) of the force fixing belt (26) using the support plate (30) is formed to be wider than the opposing gap 16) of the straight pipe portion (2). Then, the flange (27) may be bridged to the adjacent straight pipe portion (2), and the flange (27) may be fixed to the substrate (20) with bolts (21). In addition, using a long fixed belt (26) extending to the substrate (20), the flanges (27) at both ends of the fixed belt (26) are laminated on the substrate (20) and fixed with bolts (21). It may be something to do.
- the fin member (25) is disposed only on the outer surface of the meandering portion (11). The fin member (25) may be provided, while the meandering portion (12) improves the heat conductivity of the 12 fans and further enhances the heat exchange performance of the heat exchanger (10).
- the force using the fixed belt (26) is not shown!
- the fin (4) is folded horizontally to serve as a flange, and this fin (4) is disposed on the upper surface of the plurality of straight pipes (2) of the meandering part (11).
- the fin member (25) is fixed to the meandering portion (11), and the fin member (
- One meandering part (11) and the other meandering part (12) between the base plate (25) and the substrate (20) are urged in the approaching direction, and the fin member (5) disposed in the insertion gap (17) is removed. It will be firmly pinched and fixed.
- the fixing belt (26) and the support plate (30) are not required, By reducing the number of parts, it is possible to implement at lower cost. Also in this case, if the fin member (5) is reinforced by interposing the support plate (30) between the fin (4) instead of the flange and the straight pipe part (2), the fin member (5X25) and the meandering pipe main body (1) and more stable and strong clamping and fixing can be achieved.
- Example 18 of the first invention the space between the one meandering part (11) and the other meandering part (12) is the insertion gap (17) of the fin member (5).
- a plurality of gaps hierarchically formed between a plurality of adjacent straight pipe portions (2) are inserted into the fin member (5) insertion gap (17).
- a plurality of straight pipe portions (2) and a bent portion (3) are provided, and one straight meander portion (11) connected via a connecting pipe (13) is provided.
- the meandering part (12) is arranged opposite to the desired opposing interposition 16).
- the fin member (5) provided on the meandering pipe body (1) is formed slightly wider than the opposing gap 16) between the one meandering part (11) and the other meandering part (12), On each of the surfaces (6) and (7), two engaging concave grooves (8) are formed at the same interval as the opposing gap 16).
- a pair of straight pipes (2) facing each other of the meandering part (11) and the other meandering part (12) is formed in a hierarchical manner between a plurality of pairs of straight pipes (2).
- Each fin member (5) is inserted and arranged in the insertion gap (17) of the fin member (5).
- the insertion of the fin member (5) also exerts a force of an insertion opening (28) formed on the opposite side of the bent portion (3) between the adjacent straight pipe portions (2) as shown in FIG.
- the fin members (5) are inserted and arranged over the meandering part (11) and the meandering part (12), respectively.
- one straight pipe portion (2) of two pairs of adjacent straight pipe portions (2) is disposed in the engagement groove (8) on one end surface (6) of the fin member (5).
- the other straight pipe portion (2) is disposed in the engagement groove (8) on the other end surface (7), and each straight pipe portion (2) is engaged with the engagement groove (8) by an appropriate fixing means.
- the heat exchanger (10) is formed by fixing it inside.
- the straight pipe portion (2) is fixed to the engagement groove (8) by inserting the fin member (5) into each insertion gap (17), and then connecting with the meandering portion (11).
- the meandering part (12) is compressed and deformed in the direction to narrow the insertion gap (17), so that the fin member (5) can be clamped and fixed by the adjacent straight pipe part (2).
- the connection strength and thermal conductivity between the wire and the meandering pipe main body (1) can be increased.
- a straight pipe portion (2) having a flat shape as in the third embodiment is disposed in the engagement groove (8), and after this disposition, the straight pipe portion (2) is expanded to engage the engagement groove.
- (8), or the diameter of the straight pipe section (2) may be slightly larger than the width of the formation of the engaging groove (8).
- a fixing belt (26) is wrapped around the outer surface of the meandering part (12), and the fixing belt (26) is fixed to the substrate (20), thereby holding the fin member (5) together with the meandering pipe main body (1). It may be fixed.
- the heat exchange (10) of the ninth embodiment according to the second invention is suitable for installation in a vertically narrow space such as under the floor or a device.
- the flat heat exchanger (10) as in Embodiment 18 of the first invention is suitable for arrangement in a space with a low height such as under the floor.
- the fin members (5) are disposed above and below the fin members (5), and almost the entire outer peripheral surface of the straight pipe portion (2) can be brought into contact with the fin members (5). Therefore, the thermal conductivity between the meandering pipe main body (1) and the fin member (5) can be increased, and the heat of the fuel flowing in the meandering pipe main body (1) is transferred to the straight pipe part (2). The heat can be efficiently radiated to the external fluid through the fin member (5), and the heat exchange performance of the heat exchange ao) can be improved.
- a circulation hole (23) through which an external fluid can flow is opened in each fin (4) of the fin member (5) to increase the heat exchange performance by causing turbulence of the external fluid and to improve heat exchange with the wind direction.
- the degree of freedom of installing the exchanger (10) may be increased.
- the fin members (25) are also provided on the outer surfaces of the pair of straight pipe portions (2) at the uppermost ends, so that the heat exchange (10 ) Can further enhance the heat exchange performance.
- the heat exchange (10) of the ninth embodiment is similar to that of the ninth embodiment described above, with the straight pipe part (2) facing the one meandering part (11) and the other meandering part (12) being paired and adjacent to each other.
- a plurality of spaces formed hierarchically between a plurality of pairs of straight pipe portions (2) are used as insertion gaps (17) for the fin members (5).
- a fin member (5) is inserted and arranged so as to straddle one meandering part (11) and the other meandering part (12).
- the straight pipe portion (2) is provided in the engagement groove (8) of (7). Further, a fin member (25) is disposed on the outer surfaces of the pair of straight pipe portions (2) at the uppermost ends of the one meander portion (11) and the other meander portion (12) as described above. The outer surface side of the straight pipe portion (2) is disposed in the engagement groove (8) of the above.
- the fixing property between the fin member (25) disposed on the outer surface and the fin member (5) disposed in the insertion gap (17) and the meandering pipe main body (1) is improved. Therefore, as shown in Figs. 19 and 20 A belt-like fixing belt (26) made of metal or the like is stretched around the outer surface of the fin member (25) in parallel with the straight pipe portion (2).
- the fixing belt (26) also extends over both sides of a plurality of fin members (5) arranged in a hierarchy and attaches flanges (27) provided at both ends to the lower surface of the heat exchange ao).
- the substrate (20) is laminated on the arranged substrate (20), and the substrate (20) and the flange (27) are connected and fixed by bolts (21).
- the straight tube portion (2) is firmly fixed to the engagement groove (8) by this sandwiching and fixing, and the thermal conductivity of both is also improved. Then, the substrate (20) to which the heat exchanger (10) is fixed is fixed under the floor of the vehicle body by a separate bolt (22).
- the fin member (5X25) and the meandering pipe main body (1) are pressed and deformed into a shape corresponding to the outer shape of the straight pipe part (2) to form an engaging concave groove (8) having a bulging flange (24). By further increasing the heat transfer area between them, the heat conductivity between them can be further improved.
- the meandering pipe main body (1) has a flat shape such as an elliptical shape, an oval shape, a rectangular shape, or a circular shape. Has a smooth surface without any irregularities.
- the meandering pipe main body (1) is recessed inward from the outer surface, and a plurality of uneven portions (31) are formed on the inner and outer surfaces of the meandering pipe main body (1). Has formed.
- the uneven portion (31) the fluid flowing inside the meandering pipe main body (1) becomes turbulent, and the boundary layer near the inner surface of the meandering pipe main body (1) is peeled off. Heat exchange efficiency can be improved.
- the entire meandering pipe main body (1) may have a flat shape such as a circular, elliptical, or rectangular shape, or the straight pipe portion (2) and the Z or the bent portion (3) may be used.
- the shape may be flat, and the other parts may be circular.
- the uneven portion (31) may be provided on the entire meandering pipe main body (1), or may be provided only on the straight pipe section (2), or may be formed partially.
- the shape and size of the uneven portion (31), the forming interval, and the like may be constant or may be random. May be.
- the straight pipe portion (2) of the one meandering portion (11) and the other meandering portion (12) are used.
- the contact portion between the engagement groove (8) and the straight pipe portion (2) is filled with a molten resin and solidified. Glued to each other.
- the meandering pipe main body (1) and the fin member (5) can be fixed without using a holding member such as a clip (18) or a fixing belt (26), or a simpler holding member can be used. It will be good if you pinch it.
- the molten resin material is filled in the gap between the engagement concave groove (8) and the outer periphery of the straight pipe portion (2). Is done. When the gap is small, the entire gap having the heat insulating action is closed by the resin, and when the gap is relatively large, the gap is indicated by a two-dot chain line in FIGS. 6 (a) and 9. Due to the high viscosity of the molten resin material, the resin material adheres and solidifies in a fillet shape, and the fillet (32) narrows a gap portion having a heat insulating effect.
- the straight pipe portion (2) and the fin member (5) are in close contact with each other via the resin material, so that the heat conductivity of both can be increased, and the heat exchange performance of the heat exchange ao) is improved. Things become possible. Further, the fin member (5) and the meandering pipe main body (1) can be adhered to each other by the resin material, and the fixing stability of both can be enhanced. Further, even when the engagement groove (8) and the straight pipe part (2) are in contact with no gap as shown in FIGS. 6 (b) and 14, the engagement groove (8) and the straight pipe At the boundary with (2), a viscous molten resin adheres and solidifies to form a fillet (32), and the meandering pipe main body (1) and the fin member (5) can be bonded and fixed. In addition, the surface integral of the resin fillet (32), the contact area between the straight pipe portion (2) and the engaging groove (8) can be increased, and the thermal conductivity of both can be increased.
- the molten resin may be a resin for coating, a thermoplastic resin, a thermosetting resin, a photo-curable resin, an ultraviolet-curable resin, or A resin adhesive or the like may be used.
- a resin coating layer (not shown) is provided on the outer peripheral surface of the meandering pipe main body (1) used in the heat exchanger (10) having the structure of the first embodiment to the eleventh embodiment.
- the resin coating layer is formed by extruding a resin material on the outer surface of the metal tube using an extrusion molding device, or by using a general coating device such as powder coating and dive coating to apply the resin material to the outer surface of the metal tube. It may be formed as a single layer or a plurality of layers by coating with, for example.
- the resin used in the resin coating layer may be a thermoplastic resin, a thermosetting resin, a photo-curable resin, or an ultraviolet-curable resin. Is also good.
- a meandering pipe main body (1) is formed by bending a metal pipe provided with a resin coating layer, and the example 11 is used. After the meandering pipe main body (1) and the fin member (5) are fixed by the procedure as described above, heating is performed at the melting temperature of the resin coating layer, so that the resin material is melted and the engagement grooves (8 If a gap is formed between the straight pipe section (2) and the engagement groove (8), the gap having heat insulation is filled with a grease material. The gap is closed or a fillet (32) is formed. In addition, since the meandering pipe body (1) and the fin member (5) are fixed by crimping, the molten resin material permeates the gap evenly.
- a resin film layer is provided in advance on the meandering pipe main body (1) to increase the corrosion resistance, it is necessary to perform a sacrificial corrosion-resistant anticorrosion treatment or another corrosion resistance treatment such as a chromate film. This can simplify the production work. Further, by using the meandering pipe main body (1) provided with the resin coating layer, the metal pipe and the fin member (5) do not come into direct contact with each other, and the electrolytic corrosion due to the potential difference of the metal is improved. Can be prevented. Therefore, for example, for the meandering pipe main body (1), use an iron metal pipe suitable for alcohol-containing fuel, and for the fin member (5), use aluminum with excellent heat dissipation characteristics without fear of electrolytic corrosion. Therefore, a high-quality heat exchanger (10) having excellent corrosion resistance, fuel resistance and heat exchange performance can be obtained.
- the resin material By using PA, PP, PE, or the like as the resin material used for the resin film layer, the resin material has a high resistance. Corrosion-Excellent impact resistance and affordable products can be obtained.
- resin materials such as koxyalkane, fluoroethylene propylene, polychlorinated trifluoroethylene, tetrafluoroethylene ethylene, and ethylene fluorinated trifluoroethylene, not only heat exchange performance and corrosion resistance, but also products with excellent heat resistance You get it.
- the entire outer surface thereof may be subjected to a powder coating, an electrostatic coating, a dive coating or the like.
- the contact portion between the straight pipe portion (2) and the engaging concave groove (8) may be filled with a resin material and adhered to each other, and then painted. The coating may be performed after connecting and fixing the meandering pipe body (1) provided with the resin coating layer as shown in FIG. 13 and the fin member (5).
- the resin coating layer is melted simultaneously with baking and adheres to the fin member (5) during cation electrodeposition coating. Therefore, the resin coating layer can be melt-bonded at the same time as the coating. Furthermore, since the boundary between the fusion bonding portion of the fin member (5) and the resin coating layer and the coating portion of the fin member (5) are smoothly integrated, the heat conductivity of each other increases, and the fin member ( The fixing stability between 5) and the meandering pipe body (1) can be further improved, and heat exchange ao) excellent in vibration resistance and the like can be obtained.
- the resin material used in Example 12, the resin film layer in Example 13, and the resin material used in the paint in Example 14 include metal materials such as copper, aluminum, and stainless steel. Carbon material or glass material The thermal conductivity of the resin material that can be contained even if the particles or fibers formed in step (1) are included can be enhanced. In addition, it is desirable to use a black resin material having a black body radiation effect. In the case of heat radiation that is good even if the black resin having a black body radiation effect further contains the above particles or fibers. Is excellent in radiation characteristics of radiant heat, and in the case of heat absorption, a resin material excellent in heat absorption can be obtained.
- the heat radiation characteristics and heat absorption characteristics of (10) can be further improved.
- it is preferable that such a carbon nanofiber is contained in a content of more than 5 wt% and less than 30 wt%, whereby a better heat transfer effect is obtained.
- carbon nanofiber as used in the present specification is a general term that includes carbon nanotubes, carbon nanohorns, and other nano-sized carbon fibers in the field of nanotechnology. Further, carbon nanotubes, carbon nanohorns, and others may be mixed and contained in the resin material, or may be contained alone. When the carbon nanotube is contained in the resin material, the carbon nanotube may have a single-layer structure or a multi-layer structure. Further, the aspect ratio of the carbon nanotube is not limited. In addition, the thickness and length of the carbon nanotube are not limited.
- the opposing gap 16) between the one meandering part (11) and the other meandering part (12) is made narrower and narrower.
- the facing space (16) is determined by the curvature of the connecting pipe (13) when the connecting pipe (13) is bent and one meandering part (11) and the other meandering part (12) are arranged in parallel. Determined by the radius, the smaller the radius of curvature, the more It is possible to reduce the distance between the opposing sides 16).
- One method for solving this problem is as follows. First, the connecting pipe (13) is bent at a radius of curvature that does not cause crushing or breakage, and the straight pipe sections (2) of the meandering section (11) and the other meandering section (12) are arranged in parallel. I do. In this state, by twisting the connecting pipe (13) in the circumferential direction with respect to the axial direction of the straight pipe part (2), it is possible to narrow the opposing gap 16) without crushing the connecting pipe (13). it can.
- the one meandering part (11) and the other meandering part (12) are formed in line symmetry, and as shown in FIG. 23, one straight pipe part (13) of the connecting pipe (13) is formed. 2) Curve the side outward from the straight pipe part (2) to form a curved part (33).
- the section (33) is inclined to shift the position of the straight pipe section (2) from each other.
- the connecting pipe (13) connecting these is bent to arrange the meandering part (11) and the meandering part (12) facing each other as shown in FIG.
- the formation of the curved portion (33) and the bending of the connecting pipe (13) can be performed with a large radius of curvature that does not cause a problem such as crushing of the connecting pipe (13).
- the connecting pipe (13) is twisted in the circumferential direction with respect to the axial direction of the straight pipe part (2).
- the curved part (33) is bent by the fin member (5). This is performed so as to be arranged in the insertion gap (17).
- the straight pipe part (2) of the one meandering part (11) and the other meandering part (12) Are arranged in parallel with each other and the facing gap 16) is narrowed, and the curved portion (33) is housed and arranged in the insertion gap (17), so that it does not protrude outward.
- the fin members (5) bent in a corrugated shape correspond to the opposing gaps 16) on both end surfaces (6) and (7) on the bent surface (14) side. Engagement grooves (8) are provided at intervals.
- the fin member (5) is inserted and arranged in an insertion gap (17) formed hierarchically between the straight pipe sections (2) as shown in FIG. Has formed.
- the heat exchanger (10) is clamped and fixed by a metal bracket (35) and a fixing plate (36) as clamping members.
- FIG. 22 shows a state in which the bracket (35) and the fixing plate (36) are partially separated, but the bracket (35) and the fixing plate (36) are separated from the meandering pipe main body (1) and the fins.
- the members (5) are fixed together by welding or caulking while holding the member (5).
- the heat exchange (10) is performed by inserting bolts (22) through the bracket (35) and the fixing plate (36) and fixing the bolts (22) to a mating member such as under the floor.
- the bracket (35) has a plurality of circular windows (29)
- the fixing plate (36) has a rectangular window (29). I have.
- the fin member (5) can be formed to have a narrow width by reducing the distance (16) between the one meandering part (11) and the other meandering part (12). Therefore, a thin and compact heat exchange ⁇ ) can be obtained, and the layout efficiency at the time of installation with high storage efficiency is high.
- the fin member (5) is inserted and arranged in the insertion gap (17) formed between the straight pipe portions (2) to form the heat exchange (10).
- the fin member (5) used in this embodiment 16 is formed by bending into a corrugated shape, and both end faces (6) ( 7) is provided with an engagement groove (8) for engaging the straight pipe portion (2).
- the fin member (5) is inserted into the insertion gap (17) formed between the straight pipe portions (2), and the meandering portion (11)
- the thickness of the fin member (5) in the width direction is reduced to a thin heat exchange (10) by narrowing the gap 16) between the fin member (5) and the meandering part (12).
- the gap between one meandering part (11) and the other meandering part (12) is the insertion gap (17) for inserting the fin member (5).
- the heat exchanger (10) can be made thin.
- the connecting pipe (13) is twisted, thereby forming the one meandering part (11).
- the insertion gap (17) between the meandering part (11) and the meandering part (12) can be narrower than the minimum radius of curvature when bending the straight pipe part (2).
- each of the fin members (5) formed of the plate-like fins and the corrugated fins in the above-described embodiments since each of the fins (4) is provided in a plane, the fin members (5) are efficiently placed between the fins (4). In order to allow the outside air to pass, the surfaces of the fins (4) must be arranged in parallel according to the wind direction, and the installation direction of the heat exchanger (10) is limited. In order to solve this problem, in Embodiment 17 shown in FIG. 27, the corrugated fins and the plate-like fins (4) are bent at the end side to provide the inclined surface (34).
- the inclined surface (34) by providing the inclined surface (34), the wind from an oblique direction passing only by the wind parallel to the surface of the fin (4) passes between the fins (4). ) And the heat exchange performance can be improved.
- the inclined surface (34) also produces an agitating effect of the outside air, causing a turbulent flow between the surface of the fin (4) and the outside air and an agitating effect, and promoting heat exchange by separating the boundary layer. Can be done.
- the installation direction of the heat exchange ao) that does not require the fin members (5) to be A product with a high degree of layout freedom.
- the force of opening the rectangular flow holes (23) in each of the fins (4) is omitted.
- the one having the circular circulation hole (23) opened is used. It is also possible to use a rectangular or other shape of the flow hole (23) or a punching plate having a flow hole (23) formed by combining any shape.
- the provision of the circulation holes (23) increases the number of edges, and further promotes turbulence and agitation of the outside air flowing between the fins (4).
- the efficiency of heat exchange between the internal and external fluids via the member (5) can be improved. It is preferable that the area of the punched holes formed by the flow holes (23) is about 10 to 50% of the surface area of the fins (4).
- this flow hole (23) If the punched area of this flow hole (23) is less than 10%, the effect of providing the flow hole (23) does not produce the effect of turbulence and stirring of the outside air, and if it is more than 50%, the heat transfer area As a result, the heat conductivity of the fin members (5) is reduced, and the fins (4) are weakened, and the fins (4) become blurred due to wind pressure.
- the contact portion between the engaging groove (8) and the straight pipe portion (2) is filled with a molten resin and adhered to each other.
- the meandering pipe body (1) provided with the resin coating layer may be connected to the fin member (5), and may be bonded to each other by melting the resin coating layer.
- a meandering pipe main body (1) provided with an uneven portion (31) as shown in FIG. 21 may be used.
- the heat exchanger (10) is embodied as a fuel pipe of an automobile.
- another fluid cooling pipe of an automobile, or a fluid cooling pipe of a construction machine, or a living space is used.
- Air conditioners that adjust the temperature and humidity of air, heat absorption and radiation through various pipes, general industrial use, heating, hot water supply, and other heat exchangers. You can get the product.
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Geometry (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/574,041 US8584742B2 (en) | 2003-12-15 | 2004-12-10 | Heat exchanger |
KR1020057017240A KR101153315B1 (ko) | 2003-12-15 | 2004-12-10 | 열교환기 |
DE112004002463T DE112004002463T5 (de) | 2003-12-15 | 2004-12-10 | Wärmetauscher |
EP20040820291 EP1696196A4 (en) | 2003-12-15 | 2004-12-10 | HEAT EXCHANGER |
GB0603266A GB2424473B (en) | 2003-12-15 | 2004-12-10 | Heat exchanger |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003-417320 | 2003-12-15 | ||
JP2003417320 | 2003-12-15 | ||
JP2004165665A JP4520774B2 (ja) | 2003-12-15 | 2004-06-03 | 熱交換器 |
JP2004-165665 | 2004-06-03 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005057120A1 true WO2005057120A1 (ja) | 2005-06-23 |
Family
ID=34680655
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2004/018461 WO2005057120A1 (ja) | 2003-12-15 | 2004-12-10 | 熱交換器 |
Country Status (6)
Country | Link |
---|---|
US (1) | US8584742B2 (ja) |
EP (1) | EP1696196A4 (ja) |
JP (1) | JP4520774B2 (ja) |
DE (1) | DE112004002463T5 (ja) |
GB (1) | GB2424473B (ja) |
WO (1) | WO2005057120A1 (ja) |
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CN102235779A (zh) * | 2011-07-19 | 2011-11-09 | 海信科龙电器股份有限公司 | 空调换热器 |
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CN102235779A (zh) * | 2011-07-19 | 2011-11-09 | 海信科龙电器股份有限公司 | 空调换热器 |
CN102235779B (zh) * | 2011-07-19 | 2013-07-24 | 海信科龙电器股份有限公司 | 空调换热器 |
Also Published As
Publication number | Publication date |
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DE112004002463T5 (de) | 2007-06-21 |
GB2424473B (en) | 2009-02-18 |
EP1696196A1 (en) | 2006-08-30 |
GB2424473A (en) | 2006-09-27 |
US8584742B2 (en) | 2013-11-19 |
JP4520774B2 (ja) | 2010-08-11 |
JP2005201622A (ja) | 2005-07-28 |
EP1696196A4 (en) | 2015-04-29 |
GB0603266D0 (en) | 2006-03-29 |
US20070062677A1 (en) | 2007-03-22 |
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