JP3041505B2 - Heat exchanger - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat exchanger for cooling or warming oil with water and air.

[0002]

2. Description of the Related Art A conventional heat exchanger having a water passage on one side of an oil passage is generally used.

[0003]

In this conventional heat exchanger, for example, when heated hot oil is passed through an oil passage, the oil is cooled only to water in a water passage provided on one side of the oil passage. There is a problem that the cooling effect is not so good.

An object of the present invention is to solve the above-mentioned problems of the conventional heat exchanger and to efficiently and forcibly cool and heat the oil to be cooled or heated so as to manage the oil at a predetermined temperature. Things.

[0005]

The heat exchanger of the present invention comprises:
Tokoro an air passage having a fin inside the water passage with fins inside the oil passage having fins therein
They are provided in a fixed order to make one unit, and a large number of this one unit are laminated.

[0006]

The hot oil heated by the engine, for example, flows into the oil passage of the heat exchanger, the normal water flows into the water passage, and the normal air flows into the air passage. It is forcibly cooled from both upper and lower sides by water and air. In cold regions, cold oil flows into the oil passage, normal water flows into the water passage, and normal air flows into the air passage. Heated.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the heat exchanger of the present invention will be described with reference to the drawings. As shown in FIGS. 1 to 3, the oil passage 1 has offset fins 4 interposed between the aluminum alloy plates 2 and 3. The direction of the offset fins 4 is such that the left and right portions, which are the entrances and exits, are provided in the front-rear direction in the drawing and the center portion is provided in the left-right direction in the drawing, and the offset fins 4 in the center portion are deflected at right angles.
Aluminum alloy side plates 5, 6, 7, and 8 are provided at the left and right ends, the rear end, and the center of the front end of the aluminum alloy plate 2 and the aluminum alloy plate 3, respectively. The water passage 9 has offset fins 11 interposed between the aluminum alloy plate 3 and the aluminum alloy plate 10. The direction of the offset fin 11 is provided in the left and right direction on the drawing.
Aluminum alloy side plates 12 and 13 are provided at the front and rear ends of the aluminum alloy plate 3 and the aluminum alloy plate 10, respectively. Further, in the air passage 14, corrugated fins 16 are provided between the aluminum alloy plate 2 and the aluminum alloy plate 15 in the front-rear direction in the drawing. Aluminum alloy side plates 17 and 18 are provided on the left and right ends of the aluminum alloy plate 2 and the aluminum alloy plate 15, respectively.
Aluminum alloy side plates 1 at both ends on the front end side
9 and 20 are provided respectively. In this way, the water passage 9 provided on the upper surface of the oil passage 1 and the air passage 14 provided on the lower surface of the oil passage 1 are defined as one unit.
Heat exchanger 21 in which a large number of units are stacked and brazed.
It is.

As shown in FIG. 4, oil tanks 22 and 23 are provided at both front ends of the heat exchanger 21 of this embodiment, and water tanks 24 and 25 are provided at both left and right sides of the heat exchanger 21. And the left oil tank 22
Hot oil is supplied to the oil passage 1, water is supplied to the water passage 9 from the right water tank 25, and outside air or cooling air is supplied to the air passage 14 from the front side in the drawing. The hot oil is forcibly heat-exchanged from both the upper and lower surfaces of the upper water and the lower air, and quickly falls to a predetermined temperature. Further, when the direction of the offset fins 11 is changed at right angles to the both ends and the center portion when the oil passes through the oil passage 1, oil bubbles disappear due to the changed offset fins 11. As a result, the oil which has substantially no bubbles and is well cooled is taken out from the outlet of the right oil tank 23.

In the heat exchanger of this embodiment, cooling of hot oil has been described, but it is also possible to raise cold oil to a predetermined temperature with water or hot water and air. And in the heat exchanger of this embodiment,
A water passage is provided on the upper surface of the passage, and the lower surface of the oil passage is provided.
And a unit for air is provided in one unit.
We have explained a lot of stacked ones.
Upside down, a water passage is provided on the lower surface of the oil passage,
An air passage is provided on the upper surface of this oil passage to make it one unit.
Alternatively, a large number of the one unit may be laminated. In addition, as the fins deflected at right angles to the inside of the oil passage, corrugated fins with louvers, corrugated fins, corrugated fins with holes, honeycomb-type fins and the like are preferable in addition to offset fins. Similarly, the fins inside the water passage and the air passage may be offset fins, corrugated fins with louvers, corrugated fins, corrugated fins with holes, honeycomb fins and the like.

[0010]

[Effect of the Invention] The heat exchanger of the present invention, a water path having a fin inside the oil passage having fins therein
An air passage with a fin inside is provided in a predetermined order
The oil is passed through the oil passage, the water is passed through the water passage, and the air is passed through the air passage. Forcibly cool from both sides efficiently,
Alternatively, the oil can be heated and the oil can be maintained at a predetermined temperature. In the heat exchanger according to the third aspect , since the bubbles of the oil can be eliminated by the diverted fins, the oil can be cooled or heated with almost no bubbles. Claim 4,
In the heat exchangers 6 and 8 , the fluid such as oil not only travels straight by the offset fins, but also diffuses while meandering the fluid and has a large surface area of the offset fins. And can exchange heat well.

[Brief description of the drawings]

FIG. 1 is a front view of a product of the present invention.

FIG. 2 is a side view of the same.

FIG. 3 is a perspective view before assembling.

FIG. 4 is a plan view in use.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 oil passage 2 aluminum alloy plate 3 aluminum alloy plate 4 offset fin 5 side plate 6 side plate 7 side plate 8 side plate 9 water passage 10 aluminum alloy plate 11 offset fin 12 side plate 13 side plate 14 air passage 15 aluminum Alloy plate 16 Corrugated fin 17 Side plate 18 Side plate 19 Side plate 20 Side plate 21 Heat exchanger 22 Oil tank 23 Oil tank 24 Water tank 25 Water tank

Continuation of the front page (56) References Japanese Utility Model Hei 3-3825 (JP, U) Special Table Hei 3-504761 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) F28F 3 / 08 301 F28D 1/03

Claims (8)

(57) [Claims] [Claim 1] on the oil passage having fins therein
The surface, the water path having a fin therein, provided on the lower surface of the oil passage, the air passage having a fin therein, and the one unit is provided, formed by stacking a large number of those of said one unit Heat exchanger. 2. An oil passage having a fin therein.
A water passage having fins inside the surface;
Air passage with fins inside on top of the air passage
Is provided as one unit, and a large number of the one unit are laminated.
Heat exchanger . 3. The direction of the fins inside the oil passage.
The central part is turned at right angles to the inlet and outlet.
The heat exchanger according to claim 1 or 2, wherein 4. The fin inside the oil passage has an fin.
3. The heat exchanger according to claim 1, wherein the heat exchanger is a fset fin . 5. The orientation of the fins inside the water passage is
Same direction as the center fin inside the oil passage
The heat exchanger according to claim 1 . 6. A fin provided in an inside of a water passage has an offset.
The heat exchanger according to claim 1, which is a fin . 7. The orientation of the fins inside the air passage.
Is in the same direction as the fins at the entrance and exit inside the oil passage.
The heat exchanger according to claim 1 or 2 . 8. The fin inside the air passage is turned off.
3. The heat exchanger according to claim 1, which is a set fin .