JPH0721865Y2 - Multi-plate oil cooler for engine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a multi-plate oil cooler device for an engine.

(Prior Art) In a vehicle engine such as a truck, a multi-plate oil cooler device for cooling oil that lubricates each part of the engine is widely adopted. Now, an example of a typical configuration of a conventional multi-plate oil cooler device for a vehicle engine will be specifically described with reference to FIGS. 4 to 6. Reference numeral 10 in the drawing generally indicates a multi-plate oil cooler, and the oil cooler 10 includes a cooler housing 12 and a heat exchange core 14 housed in the cooler housing. The heat exchange core 14 includes a plurality of heat exchange members 16 which are arranged in parallel at small intervals and each of which has a plate-shaped oil passage therein.
High-temperature oil is supplied to the right end portion of each heat exchange member 16 in FIG. 4 from an oil inlet 18 provided near the corresponding right end of the cooler housing 12, and the high-temperature oil flows inside each heat exchange member 16. After being cooled by cooling water flowing in the opposite direction on the outer periphery of the same member while flowing to the left and right,
The oil is taken out from an oil outlet 20 provided in the cooler housing 12 and supplied to an oil gallery of an engine (not shown).

The cooler housing 12 is mounted on the crankcase 24 of the engine through a gasket 22 the front shape of which is shown in FIG. Inside the crankcase 24 surrounded by the gasket 22, the cooling water supply passage 26 for communicating the engine cooling water with the left end portion of the cooler housing 12 is provided.
And a water gallery 28 for distributing the cooling water after cooling the oil to each part in the crankcase.

A cooling water outlet 32 that limits the cooling water inlet 30 of the cooler housing 12 corresponding to the cooling water supply passage 26 of the crankcase and allows the cooling water that has flowed through the heat exchange core 14 to flow into the water gallery 28 of the crankcase. In order to limit the above, a partition plate 34 made of a thin metal plate is attached by screws or bolts 36 along the end surface of the heat exchange core 14 on the crankcase side.

Cooling water discharged from a water pump (not shown) of the engine is introduced into the oil cooler 10 from the cooling water supply passage 26 of the crankcase 24 through the cooling water inlet 30 as shown by an arrow in FIG. After entering and flowing through the water passage in the heat exchange core 14 to cool the oil, the cooling water outlet 32 flows into the water gallery 28 partitioned by the partition plate 34, and a plurality of branch passages communicating with the water gallery 28. It is supplied from 38 to a cooling water passage (not shown) around the cylinder or the cylinder liner.

(Problems to be Solved by the Invention) In the above-described conventional multi-plate oil cooler device, a gasket 22 for mounting the cooler housing 12 in a crankcase 24 in a watertight manner, a cooling water inlet 30 and a cooling water outlet 32 of the oil cooler. And the partition plate 34 that separates the oil cooler 10 and the water gallery 28 in the crankcase from each other is a completely separate and independent member, so the number of parts is large and the partition plate 34 can be mounted easily. For this reason, it takes time to process the mounting seat of the screw or bolt 36 and the screw hole and the assembling work, so that there is a problem that the manufacturing cost eventually increases.

The present invention was devised in view of the above circumstances, and has a simple structure, a small number of parts, and can reduce the working time required for processing and assembling as compared with the related art. Therefore, an inexpensive multi-plate oil cooler device for an engine is provided. It is intended to be provided.

(Means for Solving the Problem) In order to achieve the above object, a multi-plate oil cooler device for an engine according to the present invention is interposed between a cooler housing that stores a heat exchange core of the oil cooler and a crankcase. A gasket that is integrally formed with a partition plate that divides the cooling water passage in the crankcase and the cooling water passage in the cooler housing, and cools the cooling water in the crankcase to both ends of the gasket-combining partition plate. A cooling water inlet for flowing into the housing and a cooling water outlet for discharging the cooling water flowing through the inside of the cooler housing into the crankcase are respectively provided.

(Operation) According to the present invention, a gasket necessary for mounting the cooler housing on the crankcase in a watertight manner, and a partition plate for partitioning the cooling water passage in the crankcase and the cooling water passage in the cooler housing. However, since it is integrally formed, the number of parts is reduced, and various processing and assembling operations for mounting the partition plate in the cooler housing are omitted.

(Embodiment) An embodiment of the present invention will be specifically described below with reference to FIGS. (Note that members or portions that are substantially the same as or corresponding to those of the above-described conventional oil cooler device are denoted by the same reference numerals, and duplicate description is omitted.) According to the present invention,
Between the oil cooler housing 12 that houses the heat exchange core 14 and the crankcase 24, a partition plate 40 that also functions as a gasket is integrally formed. As shown in the front view seen from the engine side in FIG. 2, the partition plate 40 also serving as the gasket has a cooling water inlet at one end thereof.
An opening that limits 30 is provided, and an opening that limits the cooling water outlet 32 is provided at the other end.

Further, as shown in the enlarged cross-sectional view of FIG. 3, the gasket / compartment partition plate 40 has a coating layer 44 made of an elastic material such as rubber or resin on both side surfaces of a metal plate 42 such as a thin steel plate with an adhesive, It is formed by deposition by baking or another appropriate method. Further, as shown by the dotted line in FIG. 2, as necessary, at the hole edges of the many bolt holes 46 in the outer peripheral portion through which the bolts for fastening the cooler housing 12 to the crankcase 24 are inserted, Reinforcement known in the gasket technology such as grooved beads is appropriately performed.

According to the above configuration, the gasket and the partition plate, which are conventionally separate and independent parts, are integrated, and the partition plate also serves as the gasket.
Since it is formed as 40, the structure including the mounting screws or bolts of the partition plate and the mounting holes thereof is significantly simplified, and the number of parts is reduced. Further, it is possible to omit processing of screws or bolt holes and seating surfaces for attaching the partition plate to the heat exchange core 14, assembling work of the partition plate, etc., and there is an advantage that the manufacturing cost can be greatly reduced. Further, in the above-described embodiment, since the coating layers 44 made of rubber or the like are adhered to both side surfaces of the metal plate 42, there is an additional advantage that the rust prevention and vibration proof performance can be improved.

The present invention is not limited to the above-described embodiment, and for example, in the central portion surrounded by the alternate long and short dash line in FIG. 2 which does not require the gasket function, the covering layer 44 may be omitted. You can also

(Effect of the Invention) As described above, in the multi-plate oil cooler device for an engine according to the present invention, the gasket interposed between the cooler housing that stores the heat exchange core of the oil cooler and the crankcase is Cooling that is formed integrally with a partition plate that divides the cooling water passage in the crankcase and the cooling water passage in the cooler housing, and allows the cooling water in the crankcase to flow into the cooler housing at both ends of the gasket-combining partition plate. It features a water inlet and a cooling water outlet that allows cooling water that flows through the inside of the cooler housing to flow into the crankcase.The structure is simple, the number of parts is small, and the processing and assembly work time is reduced. Therefore, there is an effect that it can be manufactured at low cost.

[Brief description of drawings]

FIG. 1 is a longitudinal sectional view of an essential part showing an embodiment of the present invention, FIG. 2 is a plan view of a gasket / compartment partition plate 40 in FIG. 1, and FIG. 3 is a portion taken along line III-III in FIG. FIG. 4 is a lateral sectional view of a conventional oil cooler device, FIG. 5 is a front view of the oil cooler device taken along the line VV in FIG. 4 in the direction of the arrow, and FIG. FIG. 6 is a longitudinal sectional view of a main part taken along the line VI-VI of FIG. 4. 10 ... Multi-plate oil cooler, 12 ... Cooler housing, 14 ...
Heat exchange core, 18 ... Oil inlet, 20 ... Oil outlet, 22 ... Gasket, 24 ... Crank case, 28 ... Water gallery, 30 ... Cooling water inlet, 32 ... Cooling water outlet, 34 ... Partition plate, 40
… A gasket and partition plate.

Claims (1)

[Scope of utility model registration request] 1. A gasket interposed between a cooler housing accommodating a heat exchange core of an oil cooler and a crankcase defines a cooling water passage in the crankcase and a cooling water passage in the cooler housing. A cooling water inlet that is formed integrally with the partition plate and that allows the cooling water in the crankcase to flow into the cooler housing at both ends of the gasket / divider partition plate, and the cooling water that has flowed through the inside of the cooler housing to flow into the crankcase. Multi-plate oil cooler for engines, characterized by opening cooling water outlets respectively