JPS6093295A - Side plate for heat exchanger - Google Patents

Abstract

PURPOSE:To permit to fix a pipe to the side plate even in the heat exchanger having no pipe for fixing the side plate by a method wherein the side plate, having pipe inserting holes of long hole shape, is fitted to the pipe bent into staggering shape and is set, thereafter, the rise-up section of the flange of the side plate or the substantially central section of the straight line section of the rise-up section is bent back. CONSTITUTION:The pipe inserting holes 5 of the side plate 4 are provided with the rise-up sections 8 of the flange at the half periphery thereof while a plularity of long small holes 9 are provided around the pipe inserting holes 5. Two sheets of side plates 4 are fitted and set to both sides of the row of fins for the heat exchanger and, thereafter, the rise-up section 8 of flange or the substantially central section of the straight line section 10 of the rise-up section is bent back. According to this method, the periphery of the pipe inserting holes 5, whereat the plurality of long holes 9 are provided on the side plate 4, is deformed and the pipe 2 may be fixed to the side plates 4.

Description

[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to a heat exchanger consisting of pipes bent in a meandering manner at multiple points and a large number of plate-like fins, in which side plates are fixed on both sides of the pipes and the fin rows. It is about the method.

[Prior art]

General 1c/l/-Fin-cheap heat exchangers for air conditioners, refrigerators, etc. are pipes through which refrigerant flows.2. Fins that radiate or absorb heat 1. It also includes a side plate 4 for mounting and fixing the heat exchanger. The manufacturing method of the refrigerator evaporator shown in FIG.
A straight pipe 2 is inserted into the pipe insertion hole of the fin, the outer diameter of the pipe is expanded by 0.6 to 0.6 mm, and the fin and pipe are fixed to produce a fin chive.

Furthermore, one side end surface of the two straight pipes is connected with a U-shaped joint pipe to form a refrigerant flow path, and in the next step, after bending this fin tube into a meandering shape at multiple points, the pipe bending section 6
Side plates 4 having elongated pipe insertion holes 5 into which the fins can be inserted are attached to both sides of the fin row.

However, in this state, the pipe 2 and the side plate 4 cannot be fixed,
Set the side plate fixing pipe 16 that has been bent into a meandering shape in advance into the side plate fixing pipe U-groove B provided on the side plate 4, and use force/mechanism to caulk the caulking grooves 7 on both sides of the U-groove O to heat exchange the side plate 4. It has a structure that can be fixed to a container. In the side plate fixing method like 2, the side plate fixing pipe 16 is required, and it is very difficult to secure the dimensions between the side plates. Furthermore, even if the side plate 4 is inserted into the pipe bending part B of the heat exchanger, there is a problem that the side plate 4 may fall out of the heat exchanger by the time the side plate fixing pipe is caulked in the next step.

[Purpose of the invention]

An object of the present invention is to provide a measurement fixing technique that can fix pipes and side plates even in a heat exchanger having a structure without side plate fixing pipes.

[Summary of the invention]

In the method of fixing a pipe and a side plate, the present invention is characterized in that after a side plate having an elongated pipe insertion hole with a flange upright part is inserted into a pipe bent in a serpentine shape, the flange upright part of the side plate is still straight. The approximately center of the section is bent back to deform the area around the pipe insertion hole so that the pipe and side plate can be fixed.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to FIGS. 4 to 9. The pipe insertion hole 5 of the side plate 4 shown in FIG. This is an example in which elongated holes 9 are provided, and the method for assembling the side plates 4 and the heat exchanger is as follows: After inserting and setting the two side plates 4 on both sides of the heat exchanger fin row, the flange upright portion 8 or its straight portion 10 is assembled. By bending back approximately the center, the pipe 2 and the side plate 4 can be fixed by deforming the area around the pipe insertion hole 5 in the portion of the side plate 4 where the plurality of small elongated holes 9 are provided.

By making the flange upright portion 8 of the side plate 4 higher and closing many of the pipe insertion holes 5 when the pipe is bent back, performance can be increased. The elongated hole 9 around the elongated pipe insertion hole 15 where the flange upright portion 8 is still provided is a round hole,
A square hole or the like may be used as long as the flange upright portion 8 can be unbended with a small force and the pipe 2 and the side plate 4 can be fixed.

In yet another embodiment, the pipe insertion hole 5 of the side plate 4 shown in FIG. This is an example where . After inserting the side plate 4 shown in FIG. 7 into the pipe bent portion 3 of the meandering pipe, the approximately central portion of the flange upright portion 11 is bent back to form a plurality of small elongated holes 9 in the side plate 4. The pipe 2 and the side plate 4 can be fixed by deforming the area around the pipe insertion hole where the pipe is provided.

The elongated hole 9 provided around the pipe insertion hole 5 of the side plate 4 may be a round hole, a square hole, etc., as long as the flange upright portion can be bent back with a small force and the pipe 2 and the side plate 4 can be fixed.

〔Effect of the invention〕

According to the present invention, even if a pipe bent in a serpentine shape at multiple points has different dimensions and shapes depending on the bending position, such as bending pitch 1, bending shape, pipe collapse, etc., after the pipe is set, the flange upright part When unbending, the flange can easily follow the pipe and the side plate can be easily fixed. Further, the unbending force of the flange upright portion can be reduced because a plurality of elongated holes are provided around the pipe insertion hole, and the side plate can be made thinner.

[Brief explanation of drawings]

Figure 1 is a perspective view of a heat exchanger incorporating a conventional side plate, Figure 2
The figure is a front view of a conventional side plate, FIG. 3 is a sectional view taken along line AA in FIG. 2, FIG. 4 is a front view of a side plate according to an embodiment of the present invention, and FIG. Figure 6 is a front view of the side plate shown in Figure 4 incorporated into the pipe bending section, Figure 7 is a front view of the side plate of another embodiment of the present invention, and Figure 8 is a cross section taken along line C-C in Figure 7. FIG. 9 is a side view of the side plate shown in FIG. 7 assembled into a pipe bending section. DESCRIPTION OF SYMBOLS 1... Fin, 2... Pipe, 3... Pipe bending part, 4... Side plate, 5... Pipe insertion hole, 6...
U groove for fixing side plate, 7... Force 7 groove, 8... Straight line part of flange upright part, 11... Flange upright part, 12
...8 pipe insertion holes, 16...side plate fixed pipe. v, 1゜ Figure 2 Figure 3 ￥-4 side Figure 2 v, s Figure 6th '#7 Figure 8 Figure ￥9 ￥9 Continuation of the first page Inside Oyama Factory, Co., Ltd.

Claims (1)

[Scope of Claims] 1. In a heat exchanger consisting of pipes bent in a meandering manner at multiple points and a number of plate-like fins, the flanges are arranged so that the bent portions of the pipes can be inserted into the side plates attached to both sides of the row of fins. A raised elongated pipe insertion hole is provided, and after inserting the side plate into the meandering pipe and setting it in place, bend back the approximately center of the straight part of the flange upright part to close the area around the pipe insertion hole. A side plate for a heat exchanger that is characterized by being deformed to fix the pipe and the side plate. 2. Set up the flange of the side plate, make a round hole or cutout around the elongated pipe insertion hole, insert the pipe bent in a meandering shape at multiple points into the pipe insertion hole, and after setting, insert the flange upright part or The side plate for a heat exchanger according to claim 1, wherein the pipe and the side plate are fixed by deforming the pipe insertion hole periphery of the side plate by bending back the approximate center of the straight portion. 6. Make a round hole, notch, etc. around the R part of the elongated pipe insertion hole where the flange of the side plate is raised, and insert the pipe bent in a meandering shape at multiple points into the pipe insertion hole. After inserting the pipe, set the flange up. The side plate for a heat exchanger according to claim 1, wherein the pipe and the side plate are fixed by deforming the pipe insertion hole periphery of the p-side plate by bending back the part or the approximate center of the straight part thereof.