JP2001153583A - Case or tank containing multi-plate type oil cooler - Google Patents

Abstract

PROBLEM TO BE SOLVED: To introduce more cooling water to the element of an oil cooler in the cooler for generating a large space between a tank and the cooler by incorporating relatively less number of the elements. SOLUTION: A baffle plat 5 is risen and formed on the outer surface of a closure plate 2a disposed at one end side of a laminating direction.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention mainly relates to a multi-plate oil cooler housed in a cooling water case provided in a water jacket of an engine or a lower tank of a radiator for an automobile (hereinafter the tank includes a cooling water case). About.

[0002]

2. Description of the Related Art A multi-plate type oil cooler with a built-in case or tank is composed of a laminate of a plurality of flat elements. The element is configured by overlapping a pair of elongated plate-like plates having oil inlets and outlets opened at both ends in the longitudinal direction in opposite directions, and a plurality of elements are communicated at the oil inlet and outlet to form an oil cooler body. On one side of the oil cooler main body, a pair of bosses for connecting an oil pipe is protruded. The boss of the oil cooler body is aligned with the hole formed in the side wall of the lower tank of the radiator, and an oil pipe is connected there to allow the oil to flow through each element and the cooling water to flow to the outer surface of the element. By doing so, heat exchange is performed between the two.

[0003] There is a case or a multi-plate type oil cooler with a built-in tank having a small number of elements. In that case, a large space is created between the oil cooler main body and the inside of the tank. Then, more cooling water flows through the space, the flow rate of the cooling water flowing through each element decreases, and the cooling capacity decreases. Therefore, a conventional double-tube oil cooler has been proposed in Japanese Utility Model Laid-Open No. 57-180115. This deforms the inner wall of the tank and guides the cooling water to the oil cooler side.
Alternatively, there has been a proposal that a change plate is provided on the inner wall of the tank, thereby guiding the cooling water to the oil cooler side.

[0004]

However, it is troublesome to deform the radiator tank itself or to provide a change plate on the inner wall of the tank, since the design of the tank is largely changed. In addition, such a design change has to be changed again when the capacity of the oil cooler is increased later. Then, this invention makes it a subject to solve these problems.

[0005]

According to the first aspect of the present invention, a pair of elongated plates 2 having at least one whole peripheral edge rising and having a pair of oil ports 1 opened at both ends thereof are provided. And one or more elements 3 which are joined to each other at their peripheral edges in a liquid-tight manner. One or more of the elements 3 are stacked so as to communicate with each other at the oil port 1 and the plate at one end side in the stacking direction. The oil inlet / outlet is closed or the closing plate 2a in which the oil inlet / outlet does not exist is used for the plate 2, and the plate 2 at the other end opens the inlet / outlet to form an oil cooler body 4,
An oil cooler body 4 is provided on the outer surface of the closing plate 2a.
And a multi-plate oil cooler with a built-in tank in which the baffle plate 5 positioned in the width direction is raised.

According to a second aspect of the present invention, in the first aspect, a baffle plate 5 positioned in the width direction of the oil cooler body 4 is formed upright at one longitudinal end of the closing plate 2a. The oil inlet / outlet of the oil cooler main body 4 is connected to a communication hole in the wall surface of the cooling water tank 6, and the baffle plate 5 is disposed on the upstream side in the flow direction of the cooling water in the tank or inside the tank. It is a multi-plate oil cooler. According to a third aspect of the present invention, in the first or second aspect, a case or a tank is provided in which a cooling water flow portion 7 formed of a slit or an elongated hole for cooling water flow is formed at the base of the baffle plate 5. It is a multi-plate oil cooler.

According to a fourth aspect of the present invention, there is provided the case or the tank according to any one of the first to third aspects, wherein the tip side of the baffle plate 5 is inclined so as to face upstream in the flow direction of the cooling water. It is a built-in multi-plate oil cooler. According to a fifth aspect of the present invention, in any one of the second to fourth aspects, the reinforcing plate 19 is brazed and fixed to the outer surfaces of both ends in the longitudinal direction of the closing plate 2a so as to cover the oil port 1. One end of the reinforcing plate 19 is bent to constitute the baffle plate 5 or a multi-plate oil cooler with a built-in tank.

[0008]

Next, an embodiment of the present invention will be described with reference to the drawings. 1 is a partially cutaway plan view showing an attached state of an oil cooler stored in a radiator tank, FIG. 2 is a sectional view taken along the line II-II of FIG. 1, and FIG. 3 is a perspective view of the present oil cooler. FIG. 4 is a perspective view showing another example of the baffle plate 5 of the oil cooler, and FIG. 5 is a perspective view showing another baffle plate 5. The oil cooler shown in FIGS. 1 to 3 has a structure in which a plurality of elements 3 are connected via a spacer 20 and a baffle plate 5 is disposed on one end surface in the stacking direction. Each of the elements 3 has an elongated dish-shaped plate 2 having a pair of oil inlets and outlets 1 at both ends, and is superposed in the opposite direction, and has inner fins 21 interposed therein. The inner fin does not exist at a position facing the oil inlet / outlet 1. At the oil inlet / outlet 1, the plurality of elements 3 are annular spacers 20.
And are liquid-tightly connected and fixed.

A closing plate 2a is disposed on the plate of the element 3 at one end in the stacking direction. The closing plate 2a has no communicating hole or, even if the communicating hole exists, it is closed by another flat plate. In this example, a plate having no hole is used as the closing plate 2a, and a pair of reinforcing plates 19 are joined to the closing plate 2a portions facing the oil inlet / outlet 1 at both ends of the element 3, and one reinforcing plate 19 is It is longer than the other one, and the middle part is bent, and the baffle plate 5 rises and is formed there. This baffle 5
The tip side is inclined so as to be located outside the element 3 in the longitudinal direction. At the base of the baffle plate 5, a cooling water flow portion 7 formed of a rectangular hole is formed. A boss 15 is disposed at the other end of the element 3 in the stacking direction. An oil flow hole (not shown) is formed at the center of the boss 15, and a bolt 16 for attaching an oil cooler is provided around the boss.
Is protruding.

[0010] The oil cooler thus constructed is shown in FIG.
2 is stored in the cooling water tank 6 on the lower side of the radiator. That is, a bolt insertion hole (not shown) and an oil communication hole (not shown) are formed in advance on one side wall of the cooling water tank 6, and the boss portion 15 is brought into contact therewith via packing. And bolt
16 is projected to the outer surface side of the cooling water tank 6 and its bolt 16
The flange 14 of the oil pipe 13 is fastened and fixed by a nut via the through hole, and communication between the oil pipe 13 and the inside of each element 3 is established. In this example, since the outlet pipe 8 is located in the upper part of FIG. 1, the cooling water 22 flows upward from below. The baffle plate 5 is located below the cooling water 22 on the upstream side.

The cooling water 22 flowing from each tube 11 into the cooling water tank 6 is guided by the baffle plate 5 and
And is guided to the outlet pipe 8. Further, a part of the cooling water 22 flows from the cooling water flowing part 7 of the baffle plate 5 on the surface of the closing plate 2 a and is guided to the outlet pipe 8. The oil flows through each element 3 from one oil pipe 13 and is guided to the other oil pipe 13. During that time, it is cooled by the cooling water 22. Normally, the oil in the oil pipe 13 has a relatively high internal pressure, so that each element 3 is made in consideration of pressure resistance. Inner fins 21 are interposed in each element by brazing, but since there are no inner fins at both ends, the pressure resistance is particularly low at both ends of the closing plate 2a. Therefore, in this example, the reinforcing plates 19 are brazed and fixed to both ends of the closing plate 2a so as to cover the respective oil ports 1.

FIG. 4 is a perspective view showing another example of the baffle plate 5 of the present oil cooler.
The root portion of is cut and raised to form a cut and raised portion 18,
The rectangular hole matching the cut-and-raised portion 18 is
Is formed. Next, in the example of FIG. 5, the side wall portion 17 is formed by bending the baffle plate 5 in parallel with the longitudinal direction of the element 3. Due to the presence of the side wall portion 17, more cooling water is guided to each element 3.

[0013]

According to the first aspect of the present invention, since the baffle plate 5 is formed upright on the outer surface of the closing plate 2a at one end in the stacking direction, when the oil cooler is built in the tank, The baffle plate 5 is located in the gap between the two, so that more cooling water flows in the longitudinal direction of the tank and the element 3
To promote heat exchange. According to the second aspect of the present invention, since the baffle plate 5 is formed upright at one end in the longitudinal direction of the closing plate 2a and is disposed upstream in the flow direction of the cooling water in the tank, the baffle plate 5 is formed. The cooling water on the more upstream side can be efficiently guided to each element 3.

According to a third aspect of the present invention, there is provided a cooling water flow section comprising a slit or an elongated hole at the base of the baffle plate.
Is formed, cooling water can flow through the upper surface side of the closing plate 2a, and the cooling capacity thereof can be increased. According to the present invention, the baffle plate 5 is provided.
Is inclined so that the tip side of the cooling water is directed to the upstream side in the flow direction of the cooling water, so that the cooling water on the upstream side can be smoothly guided to the respective elements 3. According to the fifth aspect of the present invention, the reinforcing plate 19 is brazed and fixed to both ends in the longitudinal direction of the closing plate 2a so as to cover the oil port 1.
Since the end of one reinforcing plate 19 is bent to form the baffle plate 5, an oil cooler with a small number of parts, high strength and high cooling capacity can be provided.

[Brief description of the drawings]

FIG. 1 is a partially broken plan view showing a state in which an oil cooler of the present invention is housed in a radiator tank and attached.

FIG. 2 is a sectional view taken along the line II-II in FIG.

FIG. 3 is a perspective view of the oil cooler.

FIG. 4 is a perspective view showing another example of the baffle plate 5 of the case or the multi-plate oil cooler with a built-in tank according to the present invention.

FIG. 5 is a perspective view showing still another baffle plate 5 of the oil cooler.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Oil inlet / outlet 2 Plate 2a Closure plate 3 Element 4 Oil cooler main body 5 Baffle plate 6 Cooling water tank 7 Cooling water circulation part 8 Outlet pipe 10 Tube plate 11 Tube 12 O-ring 13 Oil pipe 14 Flange 15 Flange 15 Boss 16 Bolt 17 Side wall 18 Cut-up section 19 Reinforcement plate 20 Spacer 21 Inner fin 22 Cooling water

Claims (5)

[Claims] 1. A pair of elongated plates 2 having at least one entire periphery raised and formed with a pair of oil inlets / outlets 1 at both ends thereof, which are liquid-tightly joined to each other at the periphery. One or more of the elements 3 are stacked so as to communicate with each other at the oil port 1, and the plate 2 at one end in the stacking direction is closed with the oil port 1 or A non-existent closing plate 2a is used, and an oil cooler main body 4 is formed by opening the oil inlet / outlet 1 of the other end plate, and an oil cooler main body 4 is formed on an outer surface of the closing plate 2a.
A case or a tank built-in multi-plate oil cooler in which a baffle plate 5 positioned in the width direction is raised. 2. The oil cooler body 4 according to claim 1, wherein a baffle plate 5 positioned in the width direction of the oil cooler body 4 is formed upright at one longitudinal end of the closing plate 2a. Is connected to a communication hole in a wall of a cooling water case or a cooling water tank 6 (hereinafter simply referred to as a cooling water tank 6) of a radiator provided in a water jacket of an engine, and the baffle plate 5 is connected to the inside of the case or A case or a multi-plate oil cooler with a built-in tank disposed in the tank (hereinafter referred to as the tank) on the upstream side in the flow direction of the cooling water. 3. A multi-plate oil cooler with a built-in tank or a tank according to claim 1 or 2, wherein a cooling water flow portion 7 formed of a slit or an elongated hole for cooling water flow is formed at the base of the baffle plate 5. . 4. The multi-plate oil cooler with a built-in tank according to claim 1, wherein a tip end side of the baffle plate 5 is inclined toward an upstream side in a flow direction of the cooling water. 5. The reinforcing plate 19 according to claim 2, wherein a reinforcing plate 19 is brazed and fixed to outer surfaces of both ends in a longitudinal direction of the closing plate 2a so as to cover the oil inlet / outlet 1. A multi-plate oil cooler with a built-in tank or tank, the end of which is bent to form the baffle plate 5.