JPH04113193A - Fins of heat exchanger and method of making fins - Google Patents

Abstract

PURPOSE:To prevent the manhour for assemblying work from being increased without increasing the number of fins by a method wherein bent portions are disposed in parallel with a direction of flow of the fluid and the bent portions are applied as partition walls for a flow passage of liquid. CONSTITUTION:A fin 1 is provided with corrugations 1a. Partion walls 1b are formed in a direction parallel to a flowing direction of fluid indicated by an arrow. The partition walls 1b completely divide the fluids at both sides of the partition walls 1b from an end part 1c to an end part 1d of the fin. Then, fins 1 are assembled in heat exchanging tube plates 3 and 4 so as to form a fluid flow passage. A flow of fluid is in a U-shaped form. A downstream flow passage for the fluid and an up-stream flow passage are partitioned by the partition walls 1b disposed in the fins 1. In this way, the fluid flow passage can be partioned without increasing the number of fins, resulting in that it is possible to prevent a deritation of working efficiency caused by an increased manhour for assemblying operations.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to fins used in heat exchangers.

[Conventional technology]

As shown in FIG. 2, the conventionally known fin 1 has an uneven portion 1a formed in a direction perpendicular to the direction of fluid flow shown by the arrow as the processing feed direction shown by the white arrow. At the same time, the concave and convex portions 1a are offset at a constant pitch in a direction parallel to the direction of fluid flow. As an example of such a fin, Japanese Patent Application Laid-open No. 62-
There is a fin described in Japanese Patent No. 5098.

When this fin 1 is incorporated into tube plates 3 and 4, which are part of a heat exchanger as shown in FIG. 4, to form a fluid passage, the fluid passage is U-shaped in the heat exchanger having the structure shown in FIG. The tube plates 3 and 4 are provided with partition walls 3a to separate the downward flow path and the upward flow path of the fluid.

4a is provided. As a result, two fins, 1 and 2, are required, and the number of man-hours required for assembly is twice that of one fin, resulting in a problem of deterioration of work efficiency.

[Problem to be solved by the invention]

The above-mentioned conventional technology has a problem of deterioration of work efficiency due to an increase in the number of fins.

An object of the present invention is to prevent deterioration of work efficiency by providing a partition wall for a fluid flow path without increasing the number of fins.

[Means to solve the problem]

In order to achieve the above object, a partition wall that partitions a fluid flow path is integrally formed into one fin.

[Effect]

By incorporating one fin integrally formed with a partition wall into the tube plate, it is possible to partition the upward flow path and the downward flow path of the fluid. Therefore, since the number of fins does not increase, the number of assembly steps does not increase, and deterioration of work efficiency can be prevented.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. 1 and 3.

In FIG. 1, a fin 1 is provided with an uneven portion 1a similar to the conventional fin 1 explained in FIG. 1b is formed. This partition wall 1b is the end of the fin I
From C to 1d, the fluid on both sides of the partition wall 1b is completely partitioned off.

Figure 3 shows the fins 1 and the tube plate 3 of the heat exchanger.
, 4 to form a fluid flow path. The fluid flow is as shown by the arrows in the figure.

Like the conventional example described in FIG. 4, it has a U-shape, and the downward flow path and the upward flow path of the fluid are separated by a partition wall 1b provided on the fin 1.

In this way, the fluid flow path can be partitioned without increasing the number of fins, so it is possible to prevent deterioration of work efficiency due to an increase in the number of assembly steps.

Furthermore, since the tube plates 3 and 4 do not have partition walls like conventional ones, the space can be used as a fluid passage, and since part of the fin 1 is used as a partition wall, the heat transfer area can be increased, and heat exchange This has the effect of increasing the amount of heat exchange in the vessel.

FIG. 5 shows a method of manufacturing a fin according to the present invention.

In step 1, the uneven portions 1a are formed on the fin 1 by the molds 5a and 5b, and the material is fed from the left hand to the right hand in the figure. Step 2 shows a state in which the partition wall 1b is formed on the fin 1. In step 2, molds 5a, 5b and molds 6a, 6
b is operated, and the uneven portion 1a is formed by the molds 5a and 5b.
A partition i1b is formed by the molds 6a and 6b. Process 3
indicates the state in which the material has been sent. In step 4, molds 5a and 5b
The figure shows a state in which only the fins 1 are in operation and only the uneven portions 1a are formed on the fins 1. As described above, the molds for forming the fin 1 are divided into the molds 5a and 5b for forming the uneven portion 1a of the fin 1, and the molds 6a and eb for forming the partition wall 1b, and the operation of each mold can be controlled arbitrarily. The number of uneven portions 1a of the fin 1 and the number of partition walls 1b can be arbitrarily set using a manufacturing device that controls the fins. As a result, it becomes possible to manufacture not only a heat exchanger with one partition wall as explained in FIG. 3, but also a heat exchanger with a plurality of partition walls using one fin.

〔Effect of the invention〕

According to the present invention, the fluid flow path of the heat exchanger can be partitioned by a partition wall provided integrally with the fin.

The number of fins does not increase, the number of assembly steps can be prevented from increasing, and work efficiency can be prevented from deteriorating.

In addition, since there is no need to provide a partition wall on the tube plate of the heat exchanger, the space for providing the partition wall can be used as a fluid passage, and since part of the fin is used as the partition wall, the heat transfer area increases. This has the effect of increasing the amount of heat exchanged by the heat exchanger.

Furthermore, by using manufacturing equipment that separates the molds that form the uneven parts of the fins and the molds that form the partition walls, and allows the operation of each mold to be controlled arbitrarily, we are able to control the number of uneven parts of the fins and the number of partition walls. This has the effect that the number can be set arbitrarily.

[Brief explanation of the drawing]

Fig. 1 is a front view and a plane view of a fin showing an embodiment of the present invention, Fig. 2 is a front view and a plane view of a fin showing a conventional example, and Fig. 3 is a view showing an embodiment of the present invention. FIG. 4 is a diagram showing a fluid flow path of a heat exchanger, FIG. 4 is a diagram showing a fluid flow path of a conventional heat exchanger, and FIG. 5 is a schematic diagram of a process showing a method for manufacturing fins. 1... Fin, 1a... Uneven part, 1b... Partition wall,
5a. 5b...type, 6a, 6b...type.

Claims (3)

[Claims] 1. Heat generated by forming concavities and convexities alternately at a constant pitch in a direction perpendicular to the direction of fluid flow, and offset at a constant pitch in a direction parallel to the direction of fluid flow. A heat exchanger fin, characterized in that the exchanger fin is provided with a bent portion in a direction parallel to the direction of fluid flow, and serves as a partition wall of a fluid flow path. 2. A heat exchanger characterized in that the heat exchanger fin according to claim 1 is used as an inner tube fin. 3. A heat exchanger fin comprising a mold for forming the uneven portion of the heat exchanger fin according to claim 1 and a mold for forming the partition wall, and the operation of each mold can be controlled arbitrarily. Production method.