JP2007504423A - Automotive heat exchanger unit - Google Patents

Abstract

  The present invention relates to a heat exchanger for an automobile, and includes a first heat exchanger, and the first heat exchanger includes two headers that are spaced apart from each other and arranged substantially in parallel. The headers are fluidically connected to each other through a number of connecting tubes arranged in parallel to each other and spaced in the longitudinal direction of the headers. An opening in the first header is asymmetrically with respect to the width of the tube sheet positioned perpendicular to the longitudinal axis of the header, and the second wall portion is formed in a cross section viewed perpendicular to the header longitudinal axis. The wall toward the second end of the tube is shaped to be further away from the first end of the tube sheet in a direction perpendicular to the longitudinal axis of the connecting tube and perpendicular to the longitudinal axis of the header It has become.

Description

  The present invention relates to a heat exchanger unit for an automobile, and includes a first heat exchanger, and the heat exchanger includes two headers arranged substantially parallel to each other at a distance from each other. Are fluidly connected to each other via connecting tubes arranged parallel to each other and spaced along the longitudinal axis of the header.

  Such heat exchanger units are known. These are introduced, for example, as coolant coolers for automobiles.

  In a heat exchanger unit known to the applicant, there are two headers, the section perpendicular to the longitudinal axis is rectangular, which are connected via a connecting tube. In such a configuration, there is one inlet and one outlet neck.

  In another configuration of the heat exchanger known to the applicant, two cylindrical headers are connected fluidically via a connecting tube, which also has an inlet and an outlet neck. It is also known to the applicant that two different heat exchangers are combined or arranged adjacent to each other, one of which is a coolant cooler and the other is mounted on an air conditioner. It is an air conditioner capacitor.

  It is an object of the present invention to provide an automotive heat exchanger unit that is reliable in operation, is efficiently constructed fluidically, and can be manufactured at low cost.

  The heat exchanger unit of the present invention is proposed in claim 1.

  Hereinafter, a configuration example or a desirable configuration of the present invention will be described with reference to the drawings, but the present invention is not limited to this.

  FIG. 1 is a diagram schematically showing a structural example of a heat exchanger unit 1 according to the present invention.

  The heat exchanger unit includes a first heat exchanger 10 configured as a coolant cooler for an automobile and a second heat exchanger 12 configured as an air conditioner condenser for an automobile. The figure further shows a first header 14 of the second heat exchanger 12, which in this figure is composed of two parts in a cross section perpendicular to its longitudinal axis, It is also possible to configure. In a cross section perpendicular to the vertical axis, the first header of the second heat exchanger 12 has a substantially ring shape. Furthermore, a heat exchanger block 16 is shown, which is a multiplicity of connection tubes for the first heat exchanger 10 and a multiplicity of connection tubes for the second heat exchanger 12 configured as flat tubes. is there.

  The connection tube 18 fluidically connects the first header 20 of the first heat exchanger 10 and the second header of the first heat exchanger 10 (not shown). The bottom wall 22 that forms a part of the shell wall 26 surrounding the longitudinal axis 24 of the first heat exchanger 10 and faces the second header of the first heat exchanger 10 has a first heat exchanger 10. A number of openings or slits are provided for mounting headers 18 assigned to the. These slits 28 are arranged asymmetrically with respect to the width 30 illustrated by the arrow 32. This asymmetry is such that each central axis, indicated by reference numeral 34, is positioned closer to the second end 36 of the bottom wall 22 and closer to the first end 38 of the opposite bottom wall 22. It is in.

  The second end 36 of the bottom wall 22 is adjacent to the second wall region 40, which extends along the side indicated by the arrow 42 of the bottom wall 22, which side is the second wall region 40. 1 on the opposite side of the second header of the heat exchanger 10. Further, the first wall portion or the first wall 44 extends from the first end 38 of the first header 20 of the first heat exchanger 10 to the second header of the first heat exchanger 10 of the bottom wall 22. Extends to the opposite side.

  The wall 44 and the bottom wall 22 are each formed in a planar shape, and are positioned substantially perpendicular to each other. The wall 44 is viewed from a viewpoint approaching the direction of the first end 36 of the bottom wall on a plane that is perpendicular to the longitudinal axis 24 along the second wall, as shown by the arrow 50. As seen from the direction of the width 32 of the bottom wall 22, the bottom wall 22 gradually moves away from the first end 38. The wall 52 of the shell wall 26 on the opposite side of the bottom wall 22 is substantially planar.

  In the configuration of FIG. 1a, the wall 40 is bent convexly.

  FIG. 1a shows the wall 44 removed.

  In the cross section located perpendicular to the longitudinal axis 24 of the first header 20 of the first heat exchanger 10, the surrounding wall 26 is here made up of two parts, which are substantially U-shaped in the first part. Has a bottom wall 22, a second wall 40 and a wall 52 opposite the bottom wall 22.

  The second part of the two-part configuration is substantially occupied by the first wall 54, which is provided with vertically angled flanges 54, 56 at both ends, which are bottom when installed. It arrange | positions so that the edge part of the wall 22 or the wall 52 opposite the bottom wall may overlap.

  This connection is made by soldering or welding, or laser welding or other suitable connection method.

  On both ends in the axial direction of the first header 20 of the first heat exchanger 10, an axial end cover 56 is provided in the attached state, but here it is shown in a removed state. This cover can also be attached, for example, by the connection method described above.

  Also shown in FIG. 1 is a neck 58 that opens into the first wall or opening 60 provided therein, thereby allowing the first header 20 of the first heat exchanger 10 to be opened. It is fluidically connected to the inner tube.

  As indicated by the broken line 66, the convexly bent second wall 40 has a function of guiding the flow, so that the wall allows the fluid flowing through the inlet opening 58 to be connected to the connecting tube or the fluid flow. Guide in the direction of the slit 66 provided in the flat tube 18 or the bottom wall 22.

  FIG. 1b shows the configuration of FIG. 1 in an installed state.

  FIG. 1c is a top view of the configuration of FIG. 1b. Here, in particular, it is shown that the header 14 of the first heat exchanger 12 is composed of two parts in a cross section positioned perpendicular to the vertical axis. It can also be seen from FIG. 1 c that the connection of the first heat exchanger 10 or the central axis 34 of the flat tube 18 is towards the second end 36 of the bottom wall 22 than the first end 38 of this bottom wall. It is in a close position.

  This is apparent from the fact that the distance a indicates the distance between the center line 34 and the first end 36, and the distance b indicates the distance between the center line 34 and the first end 38. In the configuration of FIG. 1c, it is further shown that the first header 20 of the first heat exchanger 10 and the header 14 of the second heat exchanger 12 are in contact with each other. It may be installed at a certain interval.

  Furthermore, in FIG. 1c, it is clear that the second heat exchanger 12 is provided with various connection tubes from the connection tube 18 of the first heat exchanger, which are denoted here by reference numeral 70. Yes.

  FIG. 1 c further shows that the first header 20 of the first heat exchanger 10 protrudes from the connection or flat tube 18 of the first heat exchanger in the direction toward the first wall 44.

  Further, in the configuration of FIG. 1c, the second wall or the second wall portion of the first header 20 of the first heat exchanger 10 is disposed on the side of the first header 20 facing the second heat exchanger. The first wall or first wall portion 44 of the first header 20 of the first heat exchanger is opposite to the second heat exchanger of the first header 20 of the first heat exchanger 10. It is clear that it is arranged on the side of the.

  In the configuration of FIGS. 1a to 1c, all flat or connecting tubes 18 of the first heat exchanger are identical to the first header 20 of the first heat exchanger or the second header of the first heat exchanger 10, respectively. Open to the internal space 80.

  However, the interior space 80 of one or more of these headers can also be divided into a plurality of portions at various intervals using an intermediate wall in the axial direction of the corresponding header.

  FIG. 2 schematically shows the configuration of FIGS. 1 a to 1 c, but the first side wall 44 is not shown here. The mounting tool of the present invention will be described in particular with reference to FIG.

  Illustrated in FIG. 2 is a mounting tool 90 for mounting a heat exchanger, which includes a bottom wall 22 and a wall located opposite the bottom wall. There is also a wall 40 that connects the wall 22 and the bottom wall located opposite to each other, and these walls have a substantially or very roughly U-shaped structure.

  The tool 90 has a tool body 92, and a plurality of slits arranged in parallel on the side and spaced apart in the axial direction are arranged side by side. The tool 90 can be plugged into the U-shaped profile of the header 20 and held by the tool 90. In particular, the shape of the tool body 92 can be substantially adapted to the corresponding U-shaped profile.

  The slit arranged on the side protrudes from the tool body 92 in the direction of the U-shaped open side when mounting, but is for mounting the flat tube or the connecting tube 18. At the time of attachment, the U-shaped portion of the header 20 is grasped and set to the connection tube 18 by an opening or a slit. Then, the connection tube 18 protrudes through the bottom wall 22 into the slit 94 of the tool body 92. The tool body or tool illustrated by arrow 100 can then be pulled out of the U-shaped portion. The tool 100 can be pulled out because the connection slit 94 extends almost entirely. Before or after the tool is withdrawn, the connection or flat tube 18 can be connected to the bottom wall 22 by, for example, soldering or welding. The first wall 44 can then be set to the side and secured to the U-shaped portion by a suitable connection method such as soldering and / or welding.

  Next, the end cover 56 can be set.

  Applicant has the right to claim a method for manufacturing an automotive heat exchanger that takes into account the aforementioned steps during the examination process.

  FIG. 3 shows an example configuration of a heat exchanger unit according to the invention, which can be constructed in particular according to FIGS. 1a to 1c and / or mounted using the tool of FIG. You can also.

  In particular, FIG. 3 shows that the cross section of the internal space of the first header 20 of the first heat exchanger 10 on the longitudinal axis 24 of this header changes.

  This is because the intake neck 58 of the first heat exchanger 10 is arranged at the first axial end 90 of the first header 20 of the first heat exchanger 10 in the configuration of FIG. The cross section of the internal space of one header 20 becomes smaller toward the opposite end portion 92 that is the second end portion of the header 20.

  In the configuration of FIG. 3, this is closer to the bottom wall 22 as the wall 94 located opposite the bottom wall 22 goes to the second end 92. This wall 52 located opposite the bottom wall 22 is planar in the configuration of FIG.

  By forming the wall in such a shape, a part of the fluid flowing in by the intake neck 58 can be discharged by the connecting tube located in the upper range, so that the lower end faces the second end 92. Although the amount of fluid flowing at the end of the header 20 can be reduced, if the cross section is constant, it is likely that a significant pressure drop has occurred.

  In a particularly desirable configuration, the change in the section of the header or particularly the first header as viewed from the longitudinal direction corresponds to the fluid volume flow, so that the volume flow flows in the respective axial range of each header. It has become.

  FIG. 4a shows a configuration example of the present invention, but it is similar to the configuration of FIGS. 1a to 1c, and in some cases, it can be further configured based on the configuration of FIG.

  In the configuration of FIG. 4a, unlike the configurations of FIGS. 1a to 1c, the first header 20 of the first heat exchanger 10 is integrally configured in a cross section positioned substantially perpendicular to the header.

  FIG. 4b is a perspective view of the configuration of FIG. 4a.

It is the figure which showed the structure of the heat exchanger unit of this invention in the state which removed the wall. It is the figure which showed the structure of the heat exchanger unit of this invention in the state which attached the wall. FIG. 2 is a top view of the configuration of FIG. It is a figure of the tool for attachment for attaching a heat exchanger. It is a figure which shows the structural example of the heat exchanger unit of this invention. It is a figure which shows the further structural example of this invention. FIG. 4b is a perspective view of the configuration of FIG. 4a.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Heat exchanger unit 10 1st heat exchanger 12 2nd heat exchanger 14 1st header 16 Heat exchanger block 18 Connection tube 20 1st header 22 Bottom wall 24 Vertical axis 26 Shell wall 28 Slit 30 Width 34 Central axis 36 Second end 38 First end 40 Second wall 42 Side 44 First wall 52 Wall 54, 56 Flange 58 Neck 60 Opening 66 Slit 70 Connection tube 80 Interior space 90 Mounting tool 92 Tool body 94 Slit 100 tool

Claims (33)

A heat exchanger unit for an automobile, comprising a first heat exchanger, the heat exchanger comprising two headers spaced from each other and arranged substantially in parallel, which are arranged parallel to each other Are connected to each other through a large number of longitudinally spaced connection tubes, and each header shell wall surrounding each longitudinal axis of each header is separated from each other. In the direction toward the header, the flat tube is separated by a tube plate, and the connection tube stands perpendicular to the flat tube plate, and the connection tube further includes a first tube. The first end of the header tube plate is connected to the first wall portion of the shell wall of the first header, and the second wall portion is connected to the other end opposite the tube plate. Shell of this first header In addition, an intake neck opens into the first wall portion, and the intake neck is fluidically connected to the inside of the first header and is connected to one of the headers. One outlet neck is open and this outlet neck is fluidically connected to the interior of the corresponding header,
A connecting tube opens into the first header asymmetrically with respect to the width of the tube sheet placed perpendicular to the longitudinal axis of the first header, and the second wall portion is perpendicular to the longitudinal axis of the header In the viewed cross section, the first end in a direction viewed perpendicular to the longitudinal axis of the connecting tube and perpendicular to the longitudinal axis of the header as the wall moves away from the second end of the tubesheet. Alternatively, the heat exchanger unit has a shape that approaches the first end of the tube sheet.   2. The heat exchanger unit according to claim 1, wherein the second wall portion of the first header of the first heat exchanger is bent in a convex shape when viewed from a cross section viewed in a direction perpendicular to the header longitudinal axis. A heat exchanger unit characterized in that the heat exchanger unit is a bent or convex part.   3. The heat exchanger unit according to claim 1, wherein the second wall portion of the first header of the first heat exchanger is linear when viewed from a cross section viewed in a direction perpendicular to the header longitudinal axis. A heat exchanger unit characterized by having a simple shape or a straight part.   The heat exchanger unit according to any one of claims 1 to 3, wherein the intake neck extends perpendicularly to the longitudinal axis of the connection tube.   The heat exchanger unit according to any one of claims 1 to 4, wherein the connecting tube opens asymmetrically in the tube sheet, wherein the central longitudinal axis is the center vertical length of the tube plate. A heat exchanger unit characterized in that the heat exchanger unit is farther from the first end of the tube sheet than the shaft.   The heat exchanger unit according to any one of claims 1 to 5, wherein the connection tube is in the shape of a flat tube.   The heat exchanger unit according to claim 6, wherein the flat tubes are arranged so that planes formed by the flat tubes are parallel to each other and perpendicular to the longitudinal axis of the first header of the first heat exchanger. A heat exchanger unit characterized by being made.   In particular, in the heat exchanger unit according to any one of claims 1 to 7, the heat exchanger unit comprises a first heat exchanger, the heat exchanger being spaced apart from each other by two substantially parallel pieces. Headers, which are fluidically connected to each other via a number of connecting tubes arranged parallel to each other and spaced longitudinally of the header, with each longitudinal axis of each header The shell wall of each surrounding header is separated by a tube plate that is a flat wall portion in a direction toward each other header, but the cross-sectional area of the tube inner space is at least along the longitudinal axis of one of these headers A heat exchanger unit characterized in that it changes, preferably decreases.   The heat exchanger unit according to any one of claims 1 to 8, wherein the cross-sectional area of the first header of the first heat exchanger varies along the vertical axis. Exchange unit.   The heat exchanger unit according to any one of claims 1 to 9, wherein the cross-sectional area of the first header of the first heat exchanger decreases along the vertical axis. Heat exchanger unit.   The heat exchanger unit according to any one of claims 1 to 10, wherein the intake neck is disposed at a first axial end portion of the first header. Unit.   The heat exchanger unit according to claim 11, wherein the cross-sectional area of the first header of the first heat exchanger decreases along the direction of the second axial end of the first header. Heat exchanger unit.   The heat exchanger unit according to any one of claims 1 to 12, wherein a portion of the shell wall of the first header of the first heat exchanger on the opposite side of the bottom wall is the first header. By approaching the second axial end as it goes along the vertical axis toward the bottom wall, the cross-sectional area of the first header of the first heat exchanger is changed from the first axial end to the opposite first side. A heat exchanger unit that decreases along the direction of two axial ends.   14. A heat exchanger unit according to any one of the preceding claims, wherein the first header is separated by a flat wall portion or a flat wall on the opposite side of the shell wall from the connecting tube. A heat exchanger unit characterized by that.   The heat exchanger unit according to any one of claims 1 to 14, wherein the first header is integrally formed in a cross section perpendicular to the longitudinal axis. Heat exchanger unit.   The heat exchanger unit according to any one of claims 1 to 15, wherein the first header is composed of a plurality of parts, particularly two parts, in a cross section perpendicular to the longitudinal axis thereof. A heat exchanger unit characterized by that.   The heat exchanger unit according to any one of claims 1 to 16, wherein the first header is composed of two parts in a cross section perpendicular to the longitudinal axis, and the divided plane. Is a heat exchanger unit characterized by being substantially parallel to the longitudinal axis of the connecting tube.   18. The heat exchanger unit according to claim 17, wherein the dividing plane is disposed in the vicinity of a wall to be a first wall portion.   The heat exchanger unit according to claim 18, wherein the wall including the first wall portion is configured as a substantially flat surface, and each of the end portions in the shell direction of the first header has a flange that forms a substantially right angle. The heat exchanger unit, wherein the flange is connected to an end portion of the bottom wall and a wall opposite to the bottom wall.   20. A heat exchanger unit according to any one of claims 1 to 19, wherein the fluid is supplied to the second wall portion of the first header of the first heat exchanger by an intake neck. A heat exchanger unit characterized in that this fluid flowing through the intake neck changes direction in the direction of the connecting tube or prompts to change direction, with a fluidic guide function.   The heat exchanger unit according to any one of claims 1 to 20, wherein the flat tubes have substantially the same width and are arranged so as to be aligned substantially closely. unit.   The heat exchanger unit according to any one of claims 1 to 21, wherein the first heat exchanger is an automobile coolant cooler.   The heat exchanger unit according to any one of claims 1 to 22, wherein the heat exchanger unit flows in the connection tube substantially in parallel and in the same flow direction. .   24. The heat exchanger unit according to claim 1, wherein the second heat exchanger different from the first heat exchanger is provided with another fluid circuit. Heat exchanger unit.   25. The heat exchanger unit according to claim 24, wherein the second heat exchanger has two headers placed parallel to each other at a distance from each other via a plurality of connecting tubes arranged in parallel. A heat exchanger unit characterized in that it is fluidly connected to each other.   26. A heat exchanger unit according to claim 24 or claim 25, wherein the second heat exchanger is an air conditioner condenser of an automobile.   27. A heat exchanger unit according to any one of claims 1 to 26, characterized in that the first and / or second heat exchangers are made of aluminum, preferably almost completely aluminum. Heat exchanger unit.   28. A heat exchanger unit according to any one of claims 24 to 27, wherein the first and second heat exchangers are connected to each other.   28. A heat exchanger unit according to any one of claims 1 to 27, in the axial end of at least one header, on one or both ends of the header, in particular on the first heat exchanger. An end cover is provided at both axial ends of the first header of the heat exchanger unit.   30. The heat exchanger unit according to claim 29, wherein at least one end cover of the first heat exchanger disposed on the axial end side of the header is an end cover of the second heat exchanger, or A heat exchanger unit, characterized in that it is connected to such an end cover.   The heat exchanger unit according to any one of claims 24 to 30, wherein the second wall or the second wall portion of the first header of the first heat exchanger serves as the second heat exchanger. A heat exchanger unit, facing each other, wherein the first wall or the first wall portion is disposed on the opposite side of the first heat exchanger from the second heat exchanger.   32. A heat exchanger unit according to any one of claims 1 to 31, wherein the outlet neck opens to the second header of the first heat exchanger.   A mounting tool for mounting a heat exchanger, the heat exchanger comprising two headers and a plurality of connecting tubes arranged in parallel, the headers being connected by the connecting tubes, At this time, at least one of the headers is composed of a plurality of parts, particularly two parts, in a cross section perpendicular to the longitudinal axis, and there is a substantially U-shaped part in the cross section. Provided with a plurality of openings for attaching a connecting tube, the tool has one tool body, which can be fitted into this U-shape, The body is provided with a plurality of slits that open laterally in the vertical axis direction, and these slits are arranged in parallel at intervals in the axial direction. Contact It is possible to set the tube, in order that, by inserting the connecting tube in the tool body, then tool the tool body and is capable of pulling using a slit.

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