JP3810904B2 - Stacked oil cooler - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a laminated oil cooler in which a plurality of shells in which oil flow paths are formed are laminated between a pair of plate members.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, as an automobile oil cooler, for example, as disclosed in Japanese Patent Application Laid-Open No. 7-504967, a laminated oil cooler in which a plurality of shells in which oil flow paths are formed is laminated between a pair of plate members. It has been known.
FIG. 4 shows a laminated oil cooler of this type. Reference numeral 1 denotes a shell in which an oil flow path 4 is formed between a first plate member 2 and a second plate member 3. .
[0003]
Inner fins 5 are accommodated in the oil flow paths 4 of the shell 1.
A plurality of these shells 1 are laminated to form a core portion 6.
An oil inflow connector 7 is disposed on one side of the core portion 6, and an oil outflow connector 8 is disposed on the other side.
In this laminated oil cooler, as shown by a solid line in FIG. 5, the first plate member 2 has a plurality of staggered protrusions at positions on both sides of the central axis 9 of the first plate member 2. Part 2a is formed.
[0004]
On the other hand, as shown by a two-dot chain line in FIG. 5, the second plate member 3 has a plurality of protruding portions 3 a formed in a staggered manner at positions on both sides of the central axis 9 of the second plate member 3. ing.
And the protrusion part 2a of the 1st plate member 2 and the protrusion part 3a of the 2nd plate member 3 are located so that it may mutually cross | intersect, when the shell 1 is laminated | stacked.
[0005]
In such a laminated oil cooler, the first plate member 2 and the second plate member 3 are formed with protrusions 2a and 3a, and the protrusions 2a of the first plate member 2 and the second plate member 3 Since the projecting portions 3a are positioned so as to cross each other when the shells 1 are laminated, the shells 1 arranged on both sides of the core portion 6 are pressed inward by a jig during brazing. The first plate member 2 and the second plate member 3 can be brought into close contact with the inner fin 5, and the inner fin 5 is securely brazed to the first plate member 2 and the second plate member 3. can do.
[0006]
[Problems to be solved by the invention]
However, in such a conventional laminated oil cooler, a plurality of projecting portions 2a and 2b are formed in a staggered manner at positions on both sides of the central axis 9 of the first and second plate members 2 and 3. Therefore, the pressing force in the vicinity of the central axis 9 of the first and second plate members 2 and 3 is weakened, and the first plate member 2 and the second plate member 3 are connected to the inner fins in the central axis 9 and the vicinity thereof. There is a problem in that it is difficult to securely adhere to 5.
[0007]
Therefore, it is conceivable to form an additional protrusion on the central axis 9 of the first and second plate members 2 and 3, but in this case, the flow of the cooling fluid is inhibited by the protrusion. The problem occurs.
That is, such a laminated oil cooler is, for example, built in a tank of a radiator, and the oil is cooled by heat exchange with the cooling water of the radiator flowing between the shells 1. If the circulation of the cooling water is hindered, the heat exchange efficiency may be extremely lowered.
[0008]
The present invention has been made to solve such a conventional problem, and the first plate member and the second plate member are connected to the inner fin without obstructing the flow of the cooling fluid flowing between the shells. It is an object of the present invention to provide a laminated oil cooler that can reliably adhere to the surface.
[0009]
[Means for Solving the Problems]
The laminated oil cooler according to claim 1 forms a core portion by laminating a plurality of shells in which oil flow paths are formed between a first plate member and a second plate member, and the inside of the oil flow path In the laminated oil cooler in which inner fins are arranged on the first and second plate members and a large number of linear protrusions projecting outward are formed on the first and second plate members, the longitudinal lengths of the first and second plate members are A plurality of vertical protrusions protruding in a direction perpendicular to the central axis of the first and second plate members at a predetermined interval on a central axis in the direction; and the first and second plate members Forming a horizontal protrusion that protrudes along the central axis at a position between the vertical protrusions on the central axis of the central axis, and the central axis between the vertical protrusion and the horizontal protrusion. Symmetrically across the central axis Inclined protrusions that are inclined with respect to each other, and inclined protrusions formed on both sides of the vertical protrusions are formed symmetrically on both sides of the longitudinal axis of the vertical protrusions, and The protruding portion and the horizontal protruding portion intersect the horizontal protruding portion and the vertical protruding portion of the second plate member, and the inclined protruding portion of the first plate member intersects the inclined protruding portion of the second plate member. It is characterized by.
[0010]
The laminated oil cooler according to claim 2 is the laminated oil cooler according to claim 1, wherein the first and second plate members and the inner fin are made of aluminum and are brazed to each other. To do.
[0011]
(Function)
In the laminated oil cooler according to claim 1, the vertical protrusions and the horizontal protrusions of the first plate member are in contact with the horizontal protrusions and the vertical protrusions of the second plate member of the adjacent shell, For example, a pressing force by a jig is applied to the central axis of the first and second plate members and the vicinity thereof.
[0012]
In addition, the inclined protruding portion of the first plate member is brought into contact with the inclined protruding portion of the second plate member so as to cross the central axis of the first and second plate members. A pressing force is applied.
In the laminated oil cooler according to the second aspect, the first and second plate members and the inner fin are made of aluminum and brazed to each other.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention shown in the drawings will be described in detail.
FIG. 1 shows first and second plate members constituting the shell of the laminated oil cooler of FIG. 2, and FIG. 2 shows an embodiment of the laminated oil cooler of the present invention.
[0014]
In FIG. 2, reference numeral 11 indicates a shell in which an oil flow path 17 is formed between the first plate member 13 and the second plate member 15.
An inner fin 19 is accommodated in the oil flow path 17 of the shell 11.
A plurality of these shells 11 are laminated to form a core portion 21.
An oil inflow connector 23 is disposed on one side of the core portion 21, and an oil outflow connector 25 is disposed on the other side.
[0015]
In this embodiment, the first and second plate members 13 and 15, the inner fin 19 and the connectors 23 and 25 constituting the shell 11 are made of aluminum and brazed to each other.
FIG. 1 shows a first plate member 13 and a second plate member 15 constituting the shell 11 of FIG. 2, and these plate members 13 and 15 are made of an aluminum clad material and have inner fins. A brazing filler metal layer is formed on the inner surface on the 19th side, and a sacrificial corrosion layer is formed on the outer surface.
[0016]
The first plate member 13 and the second plate member 15 are formed with a large number of linear protrusions protruding outward.
In this embodiment, the first and second plate members 13 and 15 are perpendicular to the central axis C of the first and second plate members 13 and 15 at a predetermined interval on the central axis C in the longitudinal direction. A plurality of vertical protrusions 27 protruding in the direction are formed.
[0017]
Further, a horizontal protruding portion 29 protruding along the central axis C is formed at a position between the vertical protruding portions 27 on the central axis C of the first and second plate members 13 and 15. .
Further, between the vertical protrusion 27 and the horizontal protrusion 29, there are inclined protrusions 31, 33 and 35, 37 that are inclined at an angle of 45 degrees with respect to the center axis C, with the center axis C interposed therebetween. Is formed.
[0018]
Further, the inclined protrusions 31, 35 and 33, 37 formed on both sides of the vertical protrusion 27 are formed symmetrically on both sides of the longitudinal axis C1 of the vertical protrusion 27.
The vertical protrusion 27 and the horizontal protrusion 29 of the first plate member 13 are formed at positions that intersect the horizontal protrusion 29 and the vertical protrusion 27 of the second plate member 15.
[0019]
The inclined protrusions 31, 33, 35, and 37 of the first plate member 13 are formed at positions that intersect the inclined protrusions 31, 33, 35, and 37 of the second plate member 15.
FIG. 3 shows the cross-sectional shapes of the vertical protrusion 27, the horizontal protrusion 29, and the inclined protrusions 31, 33, 35, and 37 described above. In this embodiment, the cross-sectional shape is formed in an arc shape. .
[0020]
In the laminated oil cooler described above, the shell 11 is laminated in a state where the inner fins 19 are accommodated between the first and second plate members 13, 15 constituting the shell 11, and the connectors 23, 25 is assembled and each member is brazed to each other in a heat treatment furnace in a state where both sides of the core portion 21 are pressed by a jig (not shown).
[0021]
In the above-described laminated oil cooler, when brazing, the vertical projection 27 and the horizontal projection 29 of the first plate member 13 are brought into contact with the second plate member 15 of the adjacent shell 11 by the pressing force of the jig. The horizontal projecting portion 29 and the vertical projecting portion 27 are in contact with each other, and the pressing force of the jig acts on the central axis C of the first and second plate members 13 and 15 and the vicinity thereof.
[0022]
At the same time, the inclined protrusions 31, 33, 35, and 37 of the first plate member 13 are brought into contact with the inclined protrusions 31, 33, 35, and 37 of the second plate member 15 so as to intersect with each other. The pressing force by the jig acts on both sides of the central axis C of the second plate members 13 and 15.
Accordingly, in the above-described laminated oil cooler, the first plate member 13 and the second plate member 15 can be securely adhered to the inner fins 19, and the first plate member 13 and the second plate The inner fin 19 can be securely brazed to the member 15.
[0023]
In the laminated oil cooler described above, the inclined protrusions 31, 33, 35, and 37 are provided between the vertical protrusions 27 and the horizontal protrusions 29 so as to be spaced from the vertical protrusions 27 and the horizontal protrusions 29. Since it formed, it can prevent reliably inhibiting the flow of the cooling fluid which distribute | circulates between the shells 11. FIG.
Furthermore, in the above-described laminated oil cooler, the first and second plate members 13 and 15 and the inner fin 19 are made of aluminum and brazed to each other, so that these members can be joined easily and reliably. Can do.
[0024]
Further, in the above-described laminated oil cooler, the vertical protrusions 27, the horizontal protrusions 29, and the inclined protrusions 31, 33, 35, and 37 have a circular cross section, so that the first plate member 13 protrudes vertically. The vertical protrusion 27, the horizontal protrusion 29, and the inclined protrusions 31, 33, 35 of the second plate member 15 of the adjacent shell 11, the horizontal protrusion 29, and the inclined protrusions 31, 33, 35, 37. , 37 can be surely contacted.
[0025]
The laminated oil cooler of the above-described embodiment is used while being accommodated in a radiator tank. However, the present invention is not limited to such an embodiment, and for example, a laminated oil cooler for air cooling is used. Can also be applied.
[0026]
【The invention's effect】
As described above, in the stacked oil cooler according to claim 1, the vertical protrusion and the horizontal protrusion of the first plate member intersect the horizontal protrusion and the vertical protrusion of the second plate member of the adjacent shell. Then, a pressing force is applied to the central axis of the first and second plate members and the vicinity thereof, and at the same time, the inclined protruding portion of the first plate member becomes the inclined protruding portion of the second plate member. The first plate member and the second plate member are securely brought into close contact with the inner fin because the pressing force is applied to both sides of the central axis of the first and second plate members. In addition, by forming an inclined protrusion at a distance from the vertical protrusion and the horizontal protrusion between the vertical protrusion and the horizontal protrusion, the flow of the cooling fluid flowing between the shells can be reduced. Prevent obstruction It is possible.
[0027]
In the laminated oil cooler according to the second aspect, since the first and second plate members and the inner fin are formed of aluminum and brazed to each other, these members can be joined easily and reliably.
[Brief description of the drawings]
FIG. 1 is a plan view showing first and second plate members of the laminated oil cooler of FIG. 2;
FIG. 2 is a cross-sectional view showing an embodiment of the laminated oil cooler of the present invention.
FIG. 3 is a cross-sectional view of the protrusion of FIG.
FIG. 4 is a cross-sectional view showing a conventional laminated oil cooler.
5 is a plan view showing a plate member of the laminated oil cooler of FIG. 4. FIG.
[Explanation of symbols]
11 Shell 13 First plate member 15 Second plate member 17 Oil flow path 19 Inner fin 21 Core portion 27 Vertical protrusion 29 Horizontal protrusion 31, 33, 35, 37 Inclined protrusion C Central axis C1 Longitudinal axis

Claims (2)

A plurality of shells (11) in which an oil flow path (17) is formed between the first plate member (13) and the second plate member (15) to form a core portion (21), Inner fins (19) are arranged in the oil flow path (17), and linear protrusions (27, 29, 31, 31) protruding outward from the first and second plate members (13, 15). 33, 35, 37) In a laminated oil cooler formed with a large number of
The central axes (C) of the first and second plate members (13, 15) are spaced apart from each other on a central axis (C) in the longitudinal direction of the first and second plate members (13, 15). A plurality of vertical protrusions (27) protruding in the vertical direction are formed on C), and the vertical protrusions (27) on the central axis (C) of the first and second plate members (13, 15) are formed. A horizontal protrusion (29) protruding along the central axis (C) is formed at a central position between the vertical protrusion (27) and the horizontal protrusion (29). Inclined protrusions (31, 33 and 35, 37) inclined with respect to the central axis (C) are formed symmetrically with respect to the central axis (C), and formed on both sides of the vertical protrusion (27). The inclined protrusions (31, 35 and 33, 37) are the length of the vertical protrusion (27). Formed symmetrically on both sides of the direction axis (C1), the vertical protrusion (27) and the horizontal protrusion (29) of the first plate member (13) are horizontally protruded of the second plate member (15). Intersecting the portion (29) and the vertical protrusion (27), the inclined protrusions (31, 33, 35, 37) of the first plate member (13) are inclined to the inclined protrusion of the second plate member (15). A laminated oil cooler characterized by intersecting the parts (31, 33, 35, 37). The laminated oil cooler according to claim 1, wherein
The laminated oil cooler characterized in that the first and second plate members (13, 15) and the inner fin (19) are made of aluminum and brazed to each other.

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