JP2003050092A - Heat exchanger - Google Patents

Abstract

PROBLEM TO BE SOLVED: To control a fluid to be cooled or heated to a predetermined temperature by efficiently and forcibly cooling or heating the fluid. SOLUTION: A heat exchanger 6 comprises an inner tube 2 provided at the inside of an outer tube 1, outer fins 3 provided at the outside of the tube 1, tanks 4, 4 for the outer tube, provided at both ends of the opening of the tube 1, and tanks 5, 5 for the inner tube, provided at the both ends of the opening of the tube 2.

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 a fluid such as oil with a liquid or gas.

[0002]

2. Description of the Related Art Conventional heat exchangers are generally used in which outer fins are provided outside a tube which is a passage for a fluid such as oil.

[0003]

In this conventional heat exchanger, when heated hot oil is passed through a tube which is an oil passage, the hot oil is cooled only by the outer fins provided on the outside. There was a problem that the effect was not very good.

The present invention solves the above problems of the conventional heat exchanger, and efficiently and forcibly cools or heats a fluid such as a liquid or gas to be cooled or heated to control it at a predetermined temperature. It is intended for such purposes.

[0005]

The heat exchanger of the present invention comprises:
An inner tube is provided inside the outer tube, outer fins are provided outside the outer tube, tanks for outer tubes are provided at both ends of the opening of the outer tube, and tanks for inner tubes are provided at both ends of the opening of the inner tube. .

For example, hot engine oil heated by an engine is caused to flow into the outer tube of this heat exchanger from the tank for the outer tube, and refrigerant gas or normal water is caused to flow into the inner tube from the tank for the inner tube and to the outer fins. By blowing air, the hot oil is forcibly cooled from both the inside and outside of the outer tube by the refrigerant gas and the air. In cold regions, cold oil flows into the outer tube,
By flowing hot water or normal water into the inner tube and blowing air to the outer fins, the cold oil is forcibly warmed by water and air from both the inside and outside of the outer tube.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION Next, one embodiment of a heat exchanger will be described with reference to the drawings as an embodiment of the present invention. As shown in FIGS. 1 to 6, a flat inner tube 2 made of an aluminum alloy is provided inside a flat outer tube 1 made of an aluminum alloy, and a plurality of the outer tubes 1 are horizontally arranged at a predetermined interval in the vertical direction. Set up. Outer fins 3 are provided on the upper and lower outer sides of the outer tubes 1, respectively, and outer tube tanks 4 and 4 are provided at both ends of the opening of the outer tube 1, and inner tube tanks are provided at both ends of the opening of the inner tube 2. It is the heat exchanger 6 provided with 5.5.

In the heat exchanger 6 of this embodiment, hot oil is supplied to the outer tube 1 from the left outer tube tank 4, and refrigerant gas or water is supplied to the inner tube 2 from the right inner tube tank 5 and the outer tube By supplying the outside air or the cooling air to the fins 3 from the front side, the hot oil is forcibly heat-exchanged with the refrigerant gas or water from the inner side and with the air or the cooling air from the outer side. Therefore, the temperature is quickly lowered to a predetermined temperature. The well-cooled oil is taken out from the outlet of the right outer tube tank 4.

In this embodiment, cooling of hot oil is described, but it is also possible to raise cold oil to a predetermined temperature with water or warm water and air or warm air.

Explaining the outer tube 1 further, as shown in FIG. 7, a plurality of inner fins 1'for supporting a partition and a partition for supporting the inner tube 2 are provided inside the outer tube 1.

The inner tube 2 will be described further. As shown in FIG. 8, a plurality of inner fins 2'also serving as partition walls are provided inside the inner tube 2, and the inner tube 2 projects from both ends of the outer tube 1. The inner tube tank 5 is provided on the outer side of the outer tube tank 4 by being provided longer.

As shown in FIG. 9, the heat exchanger 6 of this embodiment has a half of the outer tube outer shape and is provided with a continuous notch from one end to the other end. An outer tube (not shown) on the frame piece 7
Then, on the lowermost end side frame piece 7 and the outer tube, a notch which is almost half of the outer tube outer shape and which is continuous from one end to the other end is formed on both the upper and lower sides. The intermediate side frame piece 8 (shown in FIG. 10) and the outer tube included in the above are alternately stacked in a predetermined number. Then, on the uppermost middle portion side frame piece 8 and the outer tube 1, the above end portion side frame piece 7 is turned upside down and the end side frame piece 7 '.
Are provided (shown in FIG. 5). The end side frame piece 7, the intermediate side frame piece 8 and the end side frame piece 7 ′ serve as a side wall plate of one outer tube tank 4 on the side where the outer tube 1 is present. The side wall plate on one side of the side tank 4 is unnecessary.

Further, as shown in FIG. 11, on the end side frame piece 9 which is almost half of the outer shape of the inner tube and which is provided with a notch continuous from one end to the other end, the outer is provided. Provide an inner tube (not shown) inside the tube and protruding from the outer tube,
Next, on the lowermost end side frame piece 9 and the inner tube 2, there is a middle notch which is almost half of the outer shape of the inner tube and which has a notch continuous from one end to the other end on both the upper and lower sides. Part-side frame pieces 10 (shown in FIG. 12) and inner tubes are alternately stacked in a predetermined number. Then, on the uppermost middle portion side frame piece 10 and the inner tube 2, an end portion side frame piece 9'in which the end portion side frame piece 9 is turned upside down is provided (shown in FIG. 6). The end side frame piece 9, the intermediate side frame piece 10 and the end side frame piece 9 ′ serve as a side wall plate of the inner tube tank 5 on the side where the inner tube 2 exists and the outer tube 1 exists. The side wall plate of the tank 5 on this side and the other side wall plate of the tank 4 for the outer tube are unnecessary in order to perform the role of the side wall plate of the outer tube tank 4 on the non-use side.

[0014]

According to the heat exchanger of the present invention, the inner tube is provided inside the outer tube, the outer fins are provided outside the outer tube, the outer tube tanks are provided at both ends of the opening of the outer tube, and the inner tube is provided. Since tanks for inner tubes are provided at both ends of the opening, fluids such as oil can be forcibly and efficiently cooled or heated for good heat exchange, and fluids such as oil can be controlled to a prescribed temperature. can do.

In the heat exchanger of claim 2, since the outer tube is provided with a plurality of inner tube supporting pieces / partition inner fins inside the outer tube, the outer tube is divided by the plurality of inner fins. There is an effect that the fluid is rectified almost uniformly in the inside, and the heat is well conducted by the plurality of inner fins, so that the fluid can be cooled or heated well and the heat can be exchanged well. The inner tube provided inside the outer tube can be well supported.

In the heat exchanger of claim 3, since a plurality of inner fins that also serve as partition walls are provided inside the inner tube, the fluid is almost uniformly rectified in the inner tubes divided by the plurality of inner fins. In addition to the effect that the heat is conducted well by the plurality of inner fins, the fluid can be well cooled or heated so that the heat can be well exchanged.

According to another aspect of the heat exchanger of the present invention, the outer tube is substantially half of the outer tube outer shape and the end side frame piece is provided with a notch continuous from one end to the other end. An intermediate portion which is provided on the end side frame piece and the outer tube and which has a cutout portion which is almost half of the outer tube outer shape and which is continuous from one end portion to the other end portion on both upper and lower sides. Part-side frame pieces and outer tubes are alternately stacked in a predetermined number, and a cutout that is almost half of the outer tube outer shape and is continuous from one end to the other is provided on the uppermost outer tube. Since the end side frame piece provided with the part is provided,
From the small number of outer tubes to the large number of large tubes, there is an effect that the heat exchanger main body can be made at any time with the outer tube, the end side frame piece and the intermediate side frame piece. Since the end side frame piece and the intermediate side frame piece forming the exchanger main body become the side wall of one part of the outer tube tank, there is an effect that the side wall of one part of this tank becomes unnecessary.

In the heat exchanger of claim 5, the inner tube is substantially half of the outer shape of the inner tube, and the end side frame piece is provided with a notch continuous from one end to the other end. An intermediate part which is provided on the end side frame piece and the inner tube and which has a cutout portion which is almost half of the outer shape of the inner tube and which is continuous from one end portion to the other end portion on both the upper and lower sides. Part side frame pieces and inner tubes are alternately stacked in a predetermined number, and a cutout that is almost half of the outer shape of the inner tube and is continuous from one end to the other end on the uppermost inner tube. Since the end side frame piece provided with the part is provided,
Similar to the outer tube described above, the heat exchanger main body can be made at any time with the inner tube, the end side frame piece, and the intermediate side frame piece, from small ones with a small number of inner tubes to large ones with a large number. In addition, the end side frame piece and the intermediate side frame piece forming the heat exchanger main body become the side wall of one part of the inner tube tank and at the same time also serve as the one side wall of the outer tube tank. Therefore, the side walls of a part of both tanks are unnecessary.

In the heat exchanger of claim 6, since the inner tube is provided so as to project outward from both ends of the outer tube and is long, the inner tube tanks can be installed side by side outside the outer tube tank. At the same time, since the inner tube traverses the outer tube tank, there is an effect that the fluid in the outer tube tank and the fluid in the inner tube can exchange heat.

In the heat exchanger of claim 7, since the inner tube tank is provided at both ends of the inner tube and outside the outer tube tank, the inner tube tank is provided outside the outer tube tank. The effect is that they can be installed in parallel.

[Brief description of drawings]

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

FIG. 2 is a plan view of the same.

FIG. 3 is an enlarged sectional view taken along the line AA of FIG.

FIG. 4 is an enlarged BB sectional view of FIG.

5 is an enlarged sectional view taken along line CC of FIG.

FIG. 6 is an enlarged DD sectional view of FIG.

FIG. 7 is an enlarged side view of the outer tube.

FIG. 8 is an enlarged side view of the inner tube.

FIG. 9 is an enlarged side view of an end side frame piece of the outer tube.

FIG. 10 is an enlarged side view of the frame piece on the side of the intermediate portion.

FIG. 11 is an enlarged side view of an end side frame piece of the inner tube.

FIG. 12 is an enlarged side view of the intermediate side frame piece.

[Explanation of symbols]

1 Outer tube 2 Inner tube 3 outer fins 4 Outer tube tank 5 Inner tube tank 6 heat exchanger

Claims (7)

[Claims] 1. An inner tube is provided inside the outer tube, outer fins are provided outside the outer tube, outer tube tanks are provided at both ends of the opening of the outer tube, and inner tube tanks are provided at both ends of the opening of the inner tube. A heat exchanger provided with. 2. The heat exchanger according to claim 1, wherein the outer tube is provided with a plurality of inner tube supporting pieces and partitioning inner fins inside the outer tube. 3. The heat exchanger according to claim 1, wherein the inner tube is provided with a plurality of inner fins that also serve as partition walls inside the inner tube. 4. The outer tube is provided on an end side frame piece that is substantially half of the outer tube outer shape and has a cutout portion continuous from one end portion to the other end portion. On the end side frame piece and the outer tube, there is a middle side frame piece and an outer tube that have approximately half of the outer tube outer shape and have notches that are continuous from one end to the other end on both the top and bottom sides. A predetermined number of layers alternately, and on the uppermost middle side frame piece and outer tube, cutouts that are almost half of the outer tube outline and are continuous from one end to the other end. The heat exchanger according to claim 1, wherein the provided end side frame piece is provided. 5. The inner tube is provided on an end side frame piece which is substantially half of the outer shape of the inner tube and which is provided with a notch continuous from one end to the other end, On the end side frame piece and the inner tube, there is a middle side frame piece and an inner tube which are approximately half of the outer shape of the inner tube and which have cutouts continuous from one end to the other end on both the upper and lower sides. A predetermined number of layers are alternately installed, and a cutout that is almost half of the outer shape of the inner tube and that is continuous from one end to the other end is provided on the uppermost middle section side frame piece and the inner tube. The heat exchanger according to claim 1, wherein the provided end side frame piece is provided. 6. The heat exchanger according to claim 1, wherein the inner tube is provided so as to project outward from both ends of the outer tube and is long. 7. The heat exchanger according to claim 1, wherein the inner tube tank is provided at both ends of the inner tube and outside the outer tube tank.