JPH08159683A - Heat exchanger - Google Patents

Abstract

PURPOSE: To effectually forcedly cool and heat oil by providing a water passage having a fin therein in the upper and lower surfaces of one of an oil passage and an air passage having a fin therein in the upper and lower surfaces of the other. CONSTITUTION: In a heat exchanger, a water passage 9 having an offset fin 11 therein is provided in upper and lower surfaces of one of an oil passage 1 having an offset fin 4 therein, and an air passage 14 having a corrugated fin 16 therein is provided in the upper and lower surfaces of the other of the oil passage 1. This construction is used as one unit. Many of these units are laminated. Oil is directed to pass through the oil passage 1 and water is directed to pass through the water passage 9 and further air is directed to pass through the air passage 14 whereby the oil is effectually and forcedly cooled and heated with the air and water from the upper and lower both surfaces.

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 Conventional heat exchangers are generally used in which a water passage is provided on one side of an oil passage.

[0003]

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

The 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 to control it at a predetermined temperature. It is a thing.

[0005]

The heat exchanger of the present invention comprises:
On the upper and lower surfaces of one of the oil passages that have fins inside,
A water passage having fins therein is provided, and an air passage having fins therein is provided on the other upper and lower surfaces of the oil passage, and a large number of layers are laminated.

[0006]

The hot oil heated by the engine, for example, is introduced into the oil passage of the heat exchanger, the normal water is introduced into the water passage, and the normal air is introduced into the air passage. It is forcibly cooled from both upper and lower sides by water and air. Also, in cold regions, cold oil is forced into the oil passage, normal water is allowed to flow into the water passage, and normal air is allowed to flow into the air passage, so that the cold oil is forced from both the upper and lower sides by the water and air. To be heated.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, 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 an offset fin 4 interposed between the aluminum alloy plates 2 and 3. The direction of the offset fins 4 is provided in the front-rear direction on the drawing and the center portion is provided in the left-right direction on the drawing, and the offset fins 4 at the center are turned in the right angle direction.
Side plates 5, 6, 7, and 8 of aluminum alloy are provided at the left and right ends of the aluminum alloy plate 2 and the aluminum alloy plate 3, and at the center of the rear end and the front end, respectively. The water passage 9 has an offset fin 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, the air passage 14 is provided with corrugated fins 16 between the aluminum alloy plate 2 and the aluminum alloy plate 15 in the front-back 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, and the aluminum alloy plate 2 and the aluminum alloy plate 1 are provided.
Side plate 1 of aluminum alloy on both front end sides with 5
9 and 20 are provided respectively. In this way, a heat exchanger in which a large number of units are laminated and brazed with one unit having 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. 21.

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. , Respectively, and the left oil tank 22
Hot oil is supplied to the oil passage 1 from the right side water tank 25, water is supplied to the water passage 9 from the right side 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 to quickly drop to a predetermined temperature. Further, when the direction of the offset fin 11 is changed to a right angle direction between the both ends and the central part when the oil passes through the oil passage 1, oil bubbles disappear by the changed direction of the offset fin 11. As a result, the oil, which has little bubbles and is well cooled, is taken out from the outlet of the right oil tank 23.

Although the hot oil is cooled in this embodiment, cold oil may be heated to a predetermined temperature with water or hot water and air. Further, as the fins which are deflected in the direction perpendicular to the inside of the oil passage, corrugated fins with louvers, corrugated fins, corrugated fins with holes, and honeycomb fins are preferable in addition to the offset fins. Similarly, the fins inside the water passage and the air passage are preferably offset fins, corrugated fins with louvers, corrugated fins, corrugated fins with holes, and honeycomb fins.

[0010]

According to the heat exchanger of the present invention, a water passage having fins therein is provided on the upper and lower surfaces of one of the oil passages having fins therein, and the other upper and lower surfaces of the oil passage are provided. , An air passage having a fin inside is provided,
Since a large number of layers are stacked, oil is passed through the oil passage, water is passed through the water passage, and air is passed through the air passage, so that the oil can be forcibly and efficiently cooled with water and air from both upper and lower sides, or Can be heated,
The oil can be controlled at a predetermined temperature. Claim 2
In the heat exchanger of (1), since the bubbles contained in the oil can be eliminated by the deflected fins, the oil can be sufficiently cooled or heated with almost no bubbles. In the heat exchangers according to claims 3, 5 and 7, not only the fluid such as oil travels straight by the offset fin, but also the fluid is diffused while meandering and the surface area of the offset fin is increased. It can be cooled or heated for good heat exchange.

[Brief description of 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 of the same before assembly.

FIG. 4 is a plan view during use.

[Explanation of symbols]

 1 passage for oil 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

Claims (7)

[Claims] 1. An oil passage 1 having fins therein.
On one side, a water passage having fins therein is provided, and on the other upper and lower surface of the oil passage, an air passage having fins inside is provided, and a plurality of heat exchangers are laminated. . 2. The heat exchanger according to claim 1, wherein the direction of the fins provided inside the oil passage is changed in a direction perpendicular to the center of the inlet and outlet. 3. The heat exchanger according to claim 1, wherein the fins provided inside the oil passage are offset fins. 4. The heat exchanger according to claim 1, wherein the direction of the fins provided inside the water passage is the same as that of the fin at the central portion inside the oil passage. 5. The heat exchanger according to claim 1, wherein the fins provided inside the water passage are offset fins. 6. The heat exchanger according to claim 1, wherein the direction of the fins provided inside the air passage is the same as the direction of the fin at the inlet / outlet portion inside the oil passage. 7. The heat exchanger according to claim 1, wherein the fins provided inside the air passage are offset fins.