JPH0443740Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field This invention relates to a heat exchanger used in, for example, an oil cooler.

BACKGROUND ART In a conventional oil cooler, for example, as shown in FIG. 8, a first fluid passage A through which oil flows and a second fluid passage B through which air flows in a direction perpendicular to the first fluid passage A are vertically arranged. However, these channels A and B both have a pair of side wall members 21, 21 and 22, 22, and a pair of side wall members 21, 21 or 2.
Waveform fin 23 placed between 2 and 22 comrades
and 24, and these members were integrally joined in a superposed state alternately through brazing sheets 25.

Problems that the invention aims to solve However, since such conventional oil coolers have a large number of parts, it takes time to assemble the parts (setting), making it difficult to manufacture them efficiently. It was hot.

Conventionally, the front and rear edges or the left and right edges of a flat brazing sheet are bent to form integral spacing side walls each having an L-shaped cross section. - An oil cooler in which sheets and corrugated fins are arranged alternately has been proposed (see, for example, Japanese Utility Model Application Publication No. 139077/1983).

However, in such conventional oil coolers, it is not easy to bend the side edges of the flat brazing sheet, and there are variations in the bending width and bending height, making sealing failures more likely. Furthermore, if the side wall portion of the fluid flow path is simply formed of a bent portion of a thin brazing sheet, there is a problem in that the strength is low.

The purpose of this invention is to solve the above-mentioned problems of the conventional technology, reduce the number of parts, greatly shorten the setting time of parts, increase manufacturing efficiency, and have extremely high strength. The object of the present invention is to provide a heat exchanger for use in oil coolers, etc., which is large in size and has excellent heat exchange performance.

Means for Solving the Problems In order to achieve the above-mentioned object, this invention provides a structure in which the first fluid flow path forming body and the second fluid flow path forming body include brazing sheets having brazing metal layers on both upper and lower surfaces. The first fluid flow path and the second fluid flow path orthogonal to the first fluid flow path are alternately formed in the upper and lower directions, and the second fluid flow path forming body is , a heat exchanger comprising front and rear side wall members and corrugated fins disposed entirely between these side wall members and having unevenness parallel to both side wall members, wherein the first fluid flow path forming body has left and right side wall portions; It is composed of an extruded aluminum material consisting of a horizontal connecting wall that connects the center heights of these side walls, and parallel fins that are provided on both the top and bottom of the horizontal connecting wall in parallel with the left and right side walls. It is characterized by the presence of

Effects According to the above heat exchanger, since the first fluid flow path forming body is constituted by one member made of extruded aluminum, the number of parts is small, and therefore the setting time of the parts is significantly reduced. The manufacturing efficiency can be increased. Furthermore, the first fluid flow path forming body is made of an extruded aluminum material, and its left and right side wall portions can be made thicker than normal plate materials, so it has extremely high strength. Further, since parallel fins are provided on both the upper and lower surfaces of the horizontal connecting wall portion of the first fluid flow path forming body, the inside of the first fluid flow path is subdivided into a large number of passages, and the fluid flows on both the upper and lower sides. Because the parallel fins contact the horizontal connecting wall, the heat transfer area is extremely large, and the heat exchange performance is excellent.

Embodiment An embodiment of this invention will be described below based on the drawings.

In this specification, front and back, left and right, and top and bottom are based on FIG. refers to the right side of the figure, "top" refers to the upper side of the figure, and "bottom" refers to the lower side of the figure.

In Figures 1 to 3, the heat exchanger of this invention used in an oil cooler has a first fluid passage A through which oil flows, and a second fluid passage A through which air flows orthogonally to the first fluid passage A. B are arranged vertically and alternately. This heat exchanger is made of aluminum, and has left and right side walls 4, 4 and a horizontal connecting wall that connects these left and right side walls 4, 4 and has parallel fins 6 on both upper and lower surfaces that are parallel to the left and right side walls 4, 4. Part 5
It has a first fluid flow path forming body 1 made of an extruded aluminum mold material, front and rear side wall members 7, 7, and an uneven part arranged entirely between the front and rear side wall members 7, 7 and parallel to the front and rear side wall members 7, 7. A second fluid flow path forming body 2 consisting of corrugated fins 8 are alternately joined together in a superposed state via a brazing sheet 3 having a brazing material layer on both upper and lower surfaces.

In the above, both ends of the first fluid flow path A through which oil flows are communicated with a header tank (not shown), and both ends of the second fluid flow path B through which air flows are open. Air is circulated by blowing air or by natural ventilation caused by running vehicles or the like. Such oil coolers are used, for example, to cool engine oil, industrial machinery, or oil in various hydraulic systems.

4 and 5 show a second embodiment of this invention. Here, the difference from the first embodiment is that long holes 9 are provided at predetermined intervals in the horizontal connecting wall portion 5 of the first fluid flow path forming body 1 to communicate the fluid flow paths on both the upper and lower sides with each other. The fins 6 are spaced apart from each other in parallel on the left and right, and each fin 6 is
A large number of notches 10 are formed at predetermined intervals to communicate the fluid flow paths on both the left and right sides, and each notch 1
The fin 6 portions at both ends are bent to left and right opposite sides to form bent portions 11, 11. And these long holes 9, notches 1
0 and the bent portion 11, the oil can flow vertically and horizontally within the first fluid flow path A, thereby disrupting the oil flow and sufficiently stirring it, thereby facilitating heat exchange. This increases performance. Note that the bent portions 11, 11 of the fin 6 are as follows:
Preferably, a portion of the oil is bent toward the windward side so as to form a counterflow with the air.

6 and 7 show a third embodiment of this invention. Here, the difference from the third embodiment is that instead of the long holes 9, a large number of protrusions 12 are cut and raised at predetermined intervals on both upper and lower surfaces of the horizontal connecting wall 5, and Finn 6
Of the notches 10 drilled in the windward side, the notch 10 on the windward side directs a portion of the oil from the fluid flow path on the leeward side to the notch 10 on the leeward side, based on the oil flow direction. It is arranged in a forward position that can be moved sequentially to form a counterflow to the air in the fluid flow path. Furthermore, the fins 6 are arranged in three rows diagonally in this way.
Regarding the notch 10 of the middle fin 6
In other words, the positions of the notches 10 of the fins 6 in every fourth row are shifted rearward, so that the diagonal flow of oil can be changed forward by the fins 6 in every fourth row. being done.

The other points of the second embodiment and the third embodiment are the same as those of the first embodiment, and the same parts are given the same reference numerals in the drawings.

Note that in each of the above embodiments, a horizontal oil cooler is shown in which the first fluid passage 1 through which oil flows is arranged horizontally, but this invention is different from that in which the first fluid passage 1 through which oil flows is arranged vertically. The same applies to vertical oil coolers.

Furthermore, the heat exchanger according to this invention can be applied not only to oil coolers but also to various heat exchangers that exchange heat between two types of fluids.

Effects of the invention As described above, this invention provides a structure in which the first fluid flow path forming body and the second fluid flow path forming body are alternately integrated in a polymerized state through a brazing sheet having a brazing material layer on both the upper and lower surfaces. a first fluid flow path;
On the other hand, second fluid flow paths in the orthogonal direction are formed alternately in the upper and lower directions, and the second fluid flow path forming body is arranged on the front and rear side wall members and the entire intermediate portion thereof, and has unevenness parallel to the both side wall members. In the heat exchanger which is made of corrugated fins having a
The fluid flow path forming body includes the left and right side walls, a horizontal connecting wall that connects the height centers of these side walls, and a parallel structure that is parallel to the left and right side walls on both upper and lower surfaces of the horizontal connecting wall. Since it is composed of a single member made of extruded aluminum material with shaped fins, the number of parts is small, and therefore the time for setting parts can be significantly shortened, increasing manufacturing efficiency. can.

Furthermore, the first fluid flow path forming body is made of an extruded aluminum material, and its left and right side wall portions can be made thicker than normal plate materials, so it has extremely high strength.

Further, since parallel fins are provided on both the upper and lower surfaces of the horizontal connecting wall portion of the first fluid flow path forming body, the inside of the first fluid flow path is subdivided into a large number of passages, and the fluid flows on both the upper and lower sides. Because the parallel fins contact the horizontal connecting wall, the heat transfer area becomes extremely large, resulting in excellent heat exchange performance.

[Brief explanation of the drawing]

Fig. 1 is a partial perspective view showing a first embodiment of this invention, Fig. 2 is an enlarged front view of the first fluid flow path forming body shown in Fig. 1, Fig. 3 is an enlarged plan view of the same part, and Fig. 4 5 is an enlarged plan view of the same portion, and FIG. 6 is a front view of the first fluid flow path forming body of the second embodiment of this invention. Front view,
FIG. 7 is an enlarged plan view of the same portion, and FIG. 8 is a partial perspective view of the conventional example. A...First fluid flow path, B...Second fluid flow path, 1
...First fluid channel forming body, 2... Second fluid channel forming body, 3... Blazing sheet, 4, 4...
Left and right side wall parts, 5... Horizontal connecting wall part, 6... Fins, 7, 7... Front and rear side wall members, 8... Wave-shaped fins.

Claims (1)

[Scope of utility model registration request] First fluid channel forming body 1 and second fluid channel forming body 2
are integrally coupled alternately in a superposed state via a brazing sheet 3 having brazing metal layers on both upper and lower surfaces, thereby forming a first fluid flow path A and a second fluid flow path B in a direction orthogonal thereto. are formed alternately in the upper and lower directions, and the second fluid flow path forming body 2 is a corrugated fin that is disposed over the front and rear side wall members 7, 7 and the entire intermediate portion thereof, and has a concave and convex portion parallel to the both side wall members 7, 7. 8, the first fluid flow path forming body 1 has left and right side walls 4, 4,
A horizontal connecting wall 5 connecting the center heights of these side walls 4, 4, parallel fins 6 provided on both upper and lower sides of the horizontal connecting wall 5 in parallel with the left and right side walls 4, 6. A heat exchanger characterized in that it is constructed of an aluminum extruded material consisting of: