Classifications

• • 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
  • F28D1/053—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 straight
  • F28D1/0535—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 straight the conduits having a non-circular cross-section
  • F28D1/05366—Assemblies of conduits connected to common headers, e.g. core type radiators
  • F28D1/05391—Assemblies of conduits connected to common headers, e.g. core type radiators with multiple rows of conduits or with multi-channel conduits combined with a particular flow pattern, e.g. multi-row multi-stage radiators
• • 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
  • F28F9/001—Casings in the form of plate-like arrangements; Frames enclosing a heat exchange core

Definitions

• the present invention relates to a multi-flow heat exchanger made of metal, such as aluminum, which is suitably used for, for example, a condenser for a power conditioner.
• a multi-flow type heat exchanger such as a condenser for a car air conditioner is known. That is, between a pair of hollow headers (101) and (101) arranged in parallel, a number of flat tubes (102) are passed in parallel and communicate with the headers (101) and (101). There is known a heat exchanger which is connected and has a structure in which a corrugated fin (103) is arranged between tubes (102). As shown in Fig. 10, the communication connection between the tube (102) and the header (101) is performed by connecting the two ends of the tube (102) to the circumferential slits provided on the opposing surfaces of the header (101) and (101).
• a gate fin (103) is provided, and a side plate (105) is provided outside the gate fin (103) for the purpose of protecting the fin (103). At both ends of this side plate (105), project outward as shown in Fig. 10.
• a narrow fitting protruding portion (106) is formed, and the fitting protruding portion (106) is provided on a mutually opposing surface of the header- (101) (101). 107) and they are joined and integrated with each other by being inserted and brazed.
• the reference numbers (1 10) are the partition plates, '(1 1 1) is the inlet pipe, and (1 12) is the outlet pipe.
• the fitting projections (106) must be provided at both ends of the side plate (105).
• a side plate fitting hole (107) for inserting and fitting the projecting piece (106) and a tube for inserting and fitting a tube are fitted. It is necessary to form two types of holes with the hole (104). In other words, in each of the formation of the side plate fitting hole (107) and the formation of the tube fitting hole (104), the fitting hole must be formed using completely different tools. There was a problem that productivity decreased and costs increased.
• the present invention has been made in view of such technical background, and it is not necessary to form a special fitting shape at an end of a side plate, and a side plate fitting hole in a header is provided. It is another object of the present invention to provide a heat exchanger which can improve the workability of forming a tube fitting hole, thereby improving productivity and reducing costs.
• An object of the present invention is to provide a hollow header in which a plurality of tube fitting holes are arranged, and a plurality of hollow headers which are connected to the header by fitting one end of the hollow header into the corresponding tube fitting hole.
• Side hole fitting hole, The header insertion end of the side plate is formed in a cross-sectional outer peripheral shape corresponding to the cross-sectional outer peripheral shape of the side plate fitting hole, and the header insertion end of the side plate is formed of the side. This is achieved by a heat exchanger fitted and fixed in the plate fitting hole.
• the above object is also achieved by providing a pair of hollow headers arranged in parallel and a pair of hollow headers arranged in parallel so as to extend between the two headers, and both end portions are provided on mutually facing surfaces of the pair of headers.
• a plurality of tubes connected in a header by being fitted into the tube fitting holes, and a fin disposed between adjacent tubes and outside the outermost tube;
• the outer peripheral shape of the cross-sectional surface of the header insertion end constituting the both ends of the side plate is the same or substantially the same as the outer peripheral shape of the cross section of the end of the tube, and the side plate is fitted.
• the mating hole is the same or almost the same as the tube fitting hole.
• a heat exchanger which is formed on.
• the side plate fitting hole and the tube fitting hole provided in the header are formed in the same or substantially the same shape, the operation of forming the fitting hole in the hegoo is the same or the same. It is only necessary to form a plurality of holes having substantially the same shape, and it is not necessary to form a hole having a different shape from the tube fitting hole as in the related art. Workability is improved, and it also contributes to cost reduction. Furthermore, the cross-sectional outer peripheral shape of the end of the side plate is formed to be substantially the same as or substantially the same as the cross-sectional outer peripheral shape of the end of the tube. This eliminates the need for special end processing such as the formation of a protruding piece for fitting, which improves product quality, improves productivity, and reduces costs.
• a corrugated fin composed of an aluminum brazing sheet in which a brazing material is coated on one or both surfaces of a core material is preferably used.
• the side plate has a contact piece extending perpendicularly to the side plate at an insertion end of the header, and the contact piece contacts one header contact surface with the header outer peripheral surface. It is preferable to adopt a configuration in which the headers are joined in a state where they are joined. Since the joining area is increased by joining the header-side contact surface of the contact piece and the outer peripheral surface of the header, the joining strength is remarkably improved. Furthermore, the presence of such a contact piece effectively prevents the occurrence of shrinkage in the left-right direction (the length direction of the side plate) during joining by brazing or the like.
• the contact piece extends toward the inside of the side plate.
• the header length is shortened as much as possible.
• the contact piece is formed by cutting and raising a part of an edge in the width direction of the header insertion end.
• the end of the side plate is preferably formed in a tapered shape whose width decreases toward the tip.
• the header insertion end portion of the side plate has a first tapered portion for guiding insertion at the foremost portion thereof, and a second tapered portion (for insertion amount regulation) at an inner position of the insertion end portion of the header. 2 1) may be configured.
• a first tapered portion for guiding insertion at the foremost portion thereof
• a second tapered portion for insertion amount regulation
• the width of the side plate may be the same or substantially the same as the width of the tube, and the thickness of the side plate may be the same or substantially the same as the height of the chip.
• the refrigerant compressed by the compressor is condensed by the condenser, the condensed refrigerant is passed through the decompressor to reduce the pressure, and the decompressed refrigerant is evaporated by the evaporator and returned to the compressor. It is suitably used as a condenser in a refrigeration cycle made as described above.
• FIG. 1 is a diagram showing a heat exchanger according to an embodiment of the present invention
• FIG. 1A is a front view
• FIG. 1B is a plan view.
• FIG. 2 is a sectional view taken along line 2-2 in FIG. 1B.
• FIG. 3 is a side view of the header 1 on the side facing each other.
• FIG. 4 is a plan view showing an end of the side plate.
• FIG. 5 is a perspective view showing a joint structure between the side plate and the header.
• FIG. 6 is a perspective view showing the side plate and the header 1 in a separated state.
• FIG. 7 is a cross-sectional view showing a modified example of the cross-sectional shape of the side plate and the tube.
• FIG. 8 is a plan view showing a modification of the end shape of the side plate.
• FIG. 9 is a diagram showing a conventional heat exchanger, FIG. 9A is a front view, and FIG. 9B is a plan view.
• FIG. 10 is a perspective view showing components of a conventional heat exchanger in a separated state.
• FIG. 1 to 6 show a heat exchanger according to an embodiment of the present invention.
• This heat exchanger is used as a condenser for car air conditioners.
• (1) is a hollow header
• (3) is a tube
• (4) is a corrugated fin
• (5) is a side plate
• (6) is a side plate.
• the tube fitting hole, (7) is a side plate fitting hole.
• Each of the pair of hollow headers (1) and (1), which are arranged in parallel, is made of an aluminum brazing sheet having both sides of a core material covered with a brazing material layer, with both side edges protruding.
• the hollow tube is formed into a cylindrical shape so as to be joined, and the both side edges are joined together by brazing, and is a hollow tube having a circular cross section.
• a so-called electric resistance welded pipe in which the side edges are joined by electric resistance welding, a cylindrical aluminum extruded material which does not depend on a joint in which the side edges are joined with each other, or the like may be used.
• a partition (15) is arranged in the header (1), and the internal space of the header (1) is divided into a plurality of chambers in the length direction.
• circumferentially slit tube fitting holes (6) are provided at predetermined intervals along the length direction on the peripheral walls of the headers (1) and (1) facing each other.
• the ends of the tubes (3) arranged in parallel across the two headers (1) and (1) are inserted and fitted into the tube fitting holes (6).
• the tube (3) and the header (1) are connected and connected.
• the tube (3) is made of a porous flat aluminum extruded material. In addition, it may be constituted by an electric resistance welded tube without using the extruded material.
• Corrugated fins (4) are provided between adjacent tubes (3) and outside the outermost tube (3).
• the corrugated fin (4) is made of an aluminum brazing sheet having a core material coated on one or both sides with a brazing material.
• a side plate (5) is arranged outside the outermost corrugated fin (4). Ends (5a) of the side plate (5) are provided with circumferential slit-shaped side plate fitting holes provided at both ends of the peripheral wall of the header (1) (1) facing the opposite side. It is inserted and fitted into (7) and brazed in this state.
• the side plate fitting hole (7) is formed in the same shape as the tube fitting hole (6). Therefore, the work of forming the fitting hole in the header (1) only requires forming a plurality of holes having the same shape, so that the tube is formed as in the conventional case. There is no need to form a hole having a different shape from the fitting hole, so that the workability of forming the fitting hole in the header (1) can be improved, and the cost can be reduced.
• the cross-sectional outer peripheral shape of the end (5a) of the side plate (5) is formed to be the same as the cross-sectional outer peripheral shape of the end of the tube (3). Therefore, it is not necessary to perform special end processing such as forming a protruding piece for fitting which involves technical difficulties at the end of the side plate as in the past, thereby improving the product quality and improving the product quality. Productivity can be improved and costs can be reduced.
• the outer peripheral shape in cross section of the end (5a) of the side plate (5) may be formed to be substantially the same as the outer peripheral shape in cross section of the end of the tube (3).
• the cross-sectional outer peripheral shape of the end (5a) of the side plate (5) and the cross-sectional outer peripheral shape of the end of the tube (3) may be configured as shown in FIG. That is, the width of the side plate (5) is substantially equal to the width of the tube (3), and the thickness of the side plate (5) is substantially equal to the height of the tube (3). Configuration may be used.
• abutment pieces (10) extending vertically to the side plate (5) toward the inside of the side plate (5) are provided. ) (See Figures 1 and 6). Then, as shown in FIG. 5, the contact piece (10) is brazed to the header (1) while the header contact surface (10a) is in contact with the header outer peripheral surface. As a result, the joint area between the header (1) and the side plate (5) increases, and as a result, the joining strength between the two (1) and (5) is remarkably improved. Vessel can be provided. Furthermore, since such a contact piece (10) is protruded, the shrinkage in the left-right direction (the length direction of the side plate) in the heat exchanger at the time of joining by brazing or the like can be effectively prevented. Can be prevented 0
• the contact piece (10) is a part of the widthwise part of the side plate (5). Since it is formed by cutting and raising, there is an advantage that the productivity is good despite the structure in which such new protruding members are connected.
• the end (5a) of the side plate (5) is formed in a tapered shape whose width decreases toward its tip. Therefore, it is possible to smoothly perform the insertion work into the side plate fitting hole (7), and to fit the header (1) in an appropriate positioning state. .
• the tapered shape of the end (5a) of the side plate (5) for example, a two-stage tapered shape as shown in FIG. 8 may be adopted. That is, the top end of the end portion (5a) of the side plate (5) is formed in a tapered shape to form the first taper portion (20), and further, the inside of the end portion (5a) is formed.
• the second taper part (21 ') may be formed at the position. In FIG. 8, the inclination angle of the second taper portion (21) is set to 10 ° with respect to the axial direction of the side plate (5) (10 ° with respect to the axial direction. ing) .
• the above components (1), (3), (4), and (5) are assembled in a temporary assembly state, and then the whole is joined and integrated by furnace brazing or the like. Generally, it is manufactured.
• the fitting hole in the header 1 is formed.
• the forming operation only requires forming a plurality of holes having the same or substantially the same shape, and there is no need to form a hole having a different shape from the tube fitting hole as in the conventional case.
• the workability of the formation is improved, and also the cost is reduced.
• the cross-sectional outer peripheral shape of the end of the side plate is formed to be the same or substantially the same as the cross-sectional outer peripheral shape of the end of the tube, so that there is no technical difficulty in the end of the side plate as in the past. Since there is no need to perform special end processing such as formation of a fitting projection, the quality of the product is improved, and the productivity is improved and the cost can be reduced.
• the fin When using a corrugated fin made of aluminum brazing sheet coated with brazing material on one or both sides of the core material, the fin is joined to the tube and side plate in a furnace. Can be performed in a lump.
• the side plate has a contact piece extending perpendicularly to the side plate at an insertion portion of the header, and the contact piece has a header-adjoining surface and a header-one outer peripheral surface.
• the joining area between the side plate and the header increases, so that the joining strength can be remarkably improved.
• the presence of such a contact piece can effectively prevent the shrinkage in the left-right direction (the length direction of the side plate) at the time of joining by brazing or the like, thereby further improving the product quality. it can.
• the length of the header can be set as short as possible, so that the heat exchanger can be made more compact.
• the abutment piece is formed by cutting and raising a part of the widthwise ⁇ part of the hugged insertion end, the productivity is improved despite the structure with the abutment piece. Can be improved.
• the end of the side plate is formed in a tapered shape that decreases in width toward the tip, the work of inserting the side plate into the hole for fitting the side plate can be performed smoothly, and the header can be inserted. Can be joined in a reliable positioning state.
• a first taper portion for guiding the insertion is formed at the leading end of the header of the side plate, and a second taper for regulating the insertion amount is provided at an inner position of the header at the leading end. If the taper section (2 1) is configured, insert the side plate header In addition, the amount of insertion of the header is regulated and the assembling work can be easily performed.
• the width of the side plate is the same or substantially the same as the width of the tube, and the thickness of the side plate is the same or substantially the same as the height of the tube, the width and height of both are the same.
• the degree of freedom in design can be improved because only the same design is required.
• This month is suitably used for a metal heat exchanger such as a multi-flow aluminum condenser used for a car air conditioner condenser or the like.

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• Engineering & Computer Science (AREA)
• Physics & Mathematics (AREA)
• Thermal Sciences (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
• Details Of Heat-Exchange And Heat-Transfer (AREA)
• Air-Conditioning For Vehicles (AREA)

Priority Applications (4)

Applications Claiming Priority (4)

Publications (1)

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Family Applications (1)

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Cited By (2)

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Citations (4)

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• 2002
  • 2002-07-19 WO PCT/JP2002/007351 patent/WO2003008891A1/ja active Application Filing
  • 2002-07-19 JP JP2003514191A patent/JP4272055B2/ja not_active Expired - Fee Related
  • 2002-07-19 AU AU2002320794A patent/AU2002320794B2/en not_active Ceased
  • 2002-07-19 CN CNA028143582A patent/CN1531641A/zh active Pending
  • 2002-07-19 EP EP02749323A patent/EP1420222A4/de not_active Withdrawn

Patent Citations (4)

Non-Patent Citations (1)

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