JP3055129U - Radiator with oil cooler - Google Patents

Abstract

(57) [Problem] To provide an oil cooler integrated radiator that is easy to assemble. A space portion (6) is formed in a part of a core (4) for cooling engine cooling water, and a double-tube oil cooler (7) is arranged in the space portion (6). Then, both ends of the inner pipe 8 of the oil cooler 7 are connected to the tube plate 3 in a liquid-tight manner, and an outer pipe 10 shorter than the length of the inner pipe 8 is fitted to the outer circumference of the inner pipe 8 via the oil flow path 9. Then, both ends of the outer tube 10 are joined to the inner tube 8. Then, a pair of oil inlet / outlet pipes 12 are protruded and fixed to both ends of the outer pipe 10 in the longitudinal direction.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention mainly relates to an automobile engine cooling water cooling radiator provided with an oil cooler.

[0002]

[Prior art]

 A conventional radiator with an oil cooler has an oil cooler inside the radiator tank. In the radiator tank consisting of the tube plate and the tank body, an oil cooler is installed before assembling them, the oil inlet / outlet pipe is penetrated into the tank body, and the penetrating part is made liquid-tight by brazing or packing. Then, the tank body and the tube plate were fixed in a liquid-tight manner.

[0003]

[Problems to be solved by the invention]

 Such a conventional radiator with an oil cooler has a disadvantage that the assembly process is complicated. Therefore, an object of the present invention is to provide an oil cooler integrated radiator that is easy to assemble.

[0004]

[Means for Solving the Problems]

 The radiator with an oil cooler of the present invention has a large number of parallel tubes 1 and a large number of fins 2 arranged between the tubes 1, and both ends of each tube 1 are inserted into a tube insertion hole of a tube plate 3. The core 4 is formed by being tightly inserted and fixed, and the peripheral edge of the tube plate 3 is fixed to the opening of the elongated tank body 5 in a liquid-tight manner so that the cooling air flows through the outer surface of the tube 1 and the fins 2. In the engine radiator for cooling engine cooling water, a space 6 in which the tubes 1 and the fins 2 do not exist is provided in a part of the core 4 between the pair of tube plates 3, and the space 6 is provided in the space 6. A double-pipe oil cooler 7 is arranged, and both ends of an inner pipe 8 of the oil cooler 7 are fixedly inserted through the tube plate 3 in a liquid-tight manner. The outer tube 10 that is shorter than the inner tube 8 is fitted, the both ends of the outer tube 10 are joined to both ends of the inner tube 8 in a liquid-tight manner, and both ends of the outer tube 10 are The oil inlet / outlet pipe 12 is provided in a protruding manner.

According to the radiator with the oil cooler, the oil cooler and the radiator core are integrated, and a structure having a simple structure and easy to assemble can be provided. Since the cooling air flows through the outer surface of the outer pipe 10 of the oil cooler, the oil is cooled by both the cooling water of the radiator and the cooling air, and an efficient oil cooler can be provided. Also, the outer pipe 10 is shorter than the length of the inner pipe 8, and all the seal portions in the oil flow path are separated from the cooling water flow path. There is no risk of mixing.

According to a second aspect of the present invention, in the first aspect, the space portion 6 is located on one side of the core 4, and the thickness of the inner tube 8 is smaller than that of the tube 1. This is a radiator with an oil cooler having a remarkably thick and strong structure, and having a side member 14 as a strength member disposed only on the other side of the core 4. According to this radiator with an oil cooler, the inner tube 8 itself constitutes the side member of the radiator core, and an oil cooler-integrated radiator with a small number of parts can be provided.

[0007]

[Embodiment of the invention]

 Next, an embodiment of a radiator with an oil cooler according to the present invention will be described with reference to the drawings. FIG. 1 is a front view of the radiator with an oil cooler of the present invention, and FIG. 2 is an enlarged vertical sectional view of a part II in FIG. The radiator with an oil cooler is provided with a pair of tanks which are vertically separated from each other. Each tank includes a tank body 5 and a tube plate 3. Then, both ends of the flat tube 1 are inserted into the pair of tube plates 3, and the inserted portions are fixed in a liquid-tight manner by brazing or soldering. At the same time, corrugated fins 2 are arranged between the tubes 1 in contact with each other, and the contact portions are fixed by brazing or soldering. Thus, the core 4 is constituted by the pair of tube plates 3, the large number of tubes 1 and the fins 2. A side member 14 is disposed at the right end in the drawing of the core 4. In addition, a space 6 where the tube 1 and the fin 2 do not exist is formed at the left end, and an oil cooler 7 is disposed in the space 6.

The oil cooler 7 is of a double tube type, and both ends of the inner tube 8 penetrate the tube plate 3, and the penetrated portion is liquid-tightly brazed or soldered and fixed. . The thickness of the inner tube 8 is thicker than that of the tube 1 and has a structure with greater strength. The cross section of the inner tube 8 is formed larger than that of the tube 1. An outer pipe 10 shorter than the length of the inner pipe 8 is fitted on the outer circumference of the inner pipe 8 via an oil flow path 9. Both ends of the outer tube 10 are liquid-tightly joined to the outer surface of the inner tube 8. An inner fin 11 is disposed between the outer pipe 10 and the inner pipe 8, and a pair of oil inlet / outlet pipes 12 protrude from both longitudinal ends of the outer pipe 10. The opening edge of the elongated tank main body 5 is fitted to the peripheral edge of each tube plate 3, and the fitted portion is brazed or soldered and fixed. Further, a cooling water inlet / outlet pipe 13 is protrudingly fixed to an end of each tank body 5.

Thus, each cooling water inlet / outlet pipe 13 is communicated with a water jacket of an engine (not shown), and the oil inlet / outlet pipe 12 of the oil cooler 7 is connected in the oil circulation path. Then, the engine cooling water flows down the tubes 1 and the inner pipe 8 from the upper tank body 5 and returns to the engine from the lower tank body 5 through the cooling water inlet / outlet pipe 13. The oil flows in the oil passage 9 between the inner pipe 8 and the outer pipe 10 in the longitudinal direction. Then, cooling air is blown to the outer surfaces of the core 4 and the outer tube 10 by running wind or a fan.

[0010]

[Functions and effects of the invention]

 In the radiator with an oil cooler of the present invention, a space 6 is provided in a part of the core 4 of the radiator, a double-tube oil cooler 7 is arranged in the space 6, and both ends of the inner tube 8 are connected to each other. It is inserted and fixed to the tube plate 3 in a liquid-tight manner. An outer pipe 10 shorter than the inner pipe 8 is fitted coaxially to the inner pipe 8 via an oil flow passage 9, and both ends of the outer pipe 10 are liquid-tightly joined to both ends of the inner pipe 8. Further, an oil inlet / outlet pipe 12 is provided at both ends of the outer pipe 10 so as to protrude therefrom. Therefore, according to the radiator with the oil cooler, the oil cooler and the radiator core are integrated, and a structure having a simple structure and easy to manufacture can be provided. Since the cooling air flows through the outer surface of the outer tube 10 of the oil cooler, the oil is cooled by both the cooling water of the radiator and the cooling air, and an efficient oil cooler can be provided. The outer pipe 10 is shorter than the length of the inner pipe 8, and all the seals in the oil flow path are separated from the cooling water flow path. There is no risk of mixing with

Next, the radiator with an oil cooler according to the second aspect of the present invention has a structure in which the plate thickness of the inner tube 8 is significantly thicker than that of the tube 1 and is strong. Further, the oil cooler-integrated radiator having a small number of parts can be provided by itself constituting the side member of the radiator core.

[Brief description of the drawings]

FIG. 1 is a front view of a radiator with an oil cooler according to the present invention.

FIG. 2 is an enlarged vertical sectional view of a part II in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Tube 2 Fin 3 Tube plate 4 Core 5 Tank body 6 Spatial part 7 Oil cooler 8 Inner pipe 9 Oil flow path 10 Outer pipe 11 Inner fin 12 Oil inlet / outlet pipe 13 Cooling water inlet / outlet pipe 14 Side material

Claims (2)

[Utility model registration claims] A tube has a plurality of tubes arranged in parallel and a plurality of fins disposed between the tubes, and both ends of each tube are inserted and fixed in a liquid-tight manner through a tube insertion hole of a tube plate. A core 4 is formed, and the periphery of the tube plate 3 is liquid-tightly fixed to the opening of the elongated tank body 5 so that cooling air flows through the outer surface of the tube 1 and the fins 2. In the radiator for use, a space portion 6 where the tubes 1 and the fins 2 do not exist is provided in a part of the core 4 between the pair of tube plates 3, and the space portion 6 has a double-tube oil cooler 7.
And both ends of an inner tube 8 of the oil cooler 7 are fixedly inserted through the tube plate 3 in a liquid-tight manner, and the inner tube 8 is coaxial with the inner tube 8 via an oil flow passage 9.
A shorter outer tube 10 is fitted, both ends of the outer tube 10 are liquid-tightly joined to both ends of the inner tube 8, and the outer tube 10
A radiator with an oil cooler, wherein oil inlet / outlet pipes 12 protrude from both ends of the radiator. 2. The structure according to claim 1, wherein said space portion is located on one side of said core, and said inner tube has a significantly thicker plate thickness than that of said tube. The side member 14 which is a strength member only on the other side of the core 4
Radiator with oil cooler in which is arranged.