JPH0712781U - Heat exchanger - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a heat exchanger in which a heat medium does not leak without forming a gap between a tank structure and a partition plate that partitions the internal space of the tank structure. [Structure] Engaging projections 22, 22 are provided at upper edge portions of both end surfaces of the partition plate 5 so as to project. On the other hand, the bottom surface of the tank body 8 is provided with a slit 20 having a length dimension substantially the same as the width dimension of the partition plate 5 and fitting the lower end portion of the partition plate 5. Further, notches 21 and 21 which can engage the protrusions 22 of the partition plate 5 are provided at the upper edge portions of the opposite side walls of the tank body 8.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a heat exchanger, and more particularly, to a mounting structure of a partition plate that partitions the internal space of the tank structure.

[0002]

[Problems to be solved by conventional techniques and devices]

 Conventionally, as heat exchangers, for example, as shown in FIGS. 4 and 5, there are first and second tank structures 3 and 4 arranged so as to face each other, and the first and second tank structures 3 are provided. , 4 are assembled with both ends of a plurality of flat tubes 1 in which corrugated fins 2 are alternately laminated, and are loaded into a heating furnace while being supported by a jig (not shown). By melting the brazing material that coats the inner and outer peripheral surfaces or one side of the second tank structures 3 and 4, the respective components are integrated by brazing. In the first tank structure 3, an internal space formed by the tank body 8 and the header 9 is partitioned by a partition plate 5.

Then, when the heat medium is injected from the injection pipe 6 provided in the first tank structure 3 of the heat exchanger, the heat medium flows through the plurality of flat tubes 1 located in the lower half of FIG. Then, after radiating heat through the corrugated fins 2, it flows into the second tank structure 4 and further flows through the plurality of flat tubes 1 located in the upper half of FIG. After radiating heat, the gas returns to the first tank structure 3 and flows out from the outflow pipe 7.

By the way, in the conventional example, as shown in FIG. 6, the tank body 8 of the first tank structure 3 is formed by punching and pressing a plate-like clad material having front and back surfaces or one surface coated with a brazing material. It is machined into a box shape with a generally U-shaped cross section. It has a positioning hole 10 in the center of the bottom surface, and two pairs of protrusions 11 and 12 on the inner surfaces of the opposing side walls (positions on the front side in FIG. By forming a protruding portion 11 which is not shown in the drawing), a position regulating recess 13 of the partition plate 5 is formed between the adjacent protruding portions 11, 11 and 12, 12.

Further, the header 9 of the first tank structure 3 is, like the tank main body 8, punched out from a plate-like clad material whose front and back surfaces or one surface is coated with a brazing material, and then subjected to press working to have a substantially cross-section. It is formed into a shallow box shape having a letter shape, and a plurality of rows of connection holes 14 for inserting the tubes 1 are provided at a predetermined pitch.

Further, the partition plate 5 is a plate member having a substantially rectangular front surface, and a positioning projection 15 that fits into the positioning hole 10 of the tank body 8 is provided at a substantially central portion of the bottom side.

Then, both side edges of the partition plate 5 are fitted into the recesses 13 of the tank body 8, and the projections 15 of the partition plate 5 are fitted into the positioning holes 10 of the tank body 8 and then the tank body 8 is fitted. The first tank structure 3 is formed by assembling the header 9 and brazing it together.

However, since the partition plate 5 can be formed only by punching, a high component accuracy can be obtained, while the tank body 8 needs to be formed into a box shape by a drawing process. Not only is it difficult to obtain accuracy, and variations in the depth dimension D are likely to occur, but variations are also likely to occur in the rounded shapes formed in the corners of the inner surface of the recess 13 of the tank body 8. Therefore, for example, as shown in FIG. 7, when the depth dimension D ₁ of the tank body 8 is larger than the height dimension T of the partition plate 5, a gap 16 is formed between the partition plate 5 and the header 9. Occurs. Further, as shown in FIG. 8, when the depth dimension D ₂ of the tank body 8 is smaller than the height dimension T of the partition plate 5, the upper end portion of the partition plate 5 protrudes from the tank body 8 and the gaps 17, 17 are formed. Occurs. As a result, there is a problem in that even if they are integrated by brazing, the above-mentioned gap 16 or 17 cannot be completely sealed, the heat medium leaks from the gap 16 or 17, and the desired heat exchange performance cannot be obtained.

Therefore, in view of the above problems, the present invention provides a heat exchanger for a heat exchanger in which a large gap does not occur between a tank structure and a partition plate that partitions the internal space of the tank structure, and a heat medium does not leak. An object is to provide a tank structure.

[0010]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the heat exchanger tank according to the present invention is provided with a plurality of tubes connected between the first tank structure and the second tank structure so as to partition the inside of the first tank structure. In a heat exchanger in which the first tank structure is provided with a heat medium supply port and a discharge port while partitioning with a plate, the first tank structure is a box-shaped tank body having a substantially U-shaped cross section, and the tank body. And a header having a length dimension substantially the same as the width dimension of the partition plate and having a slit for fitting the lower end portion of the partition plate. At the same time, a notch is provided at the upper end edge of the opposing side wall of the tank body, while a protrusion that engages with the notch of the tank body is provided at the upper edge of both end surfaces of the partition plate. It is configured.

[0011]

[Action]

 Therefore, according to the present invention, when the partition plate engages with the notch formed in the opposite side wall of the tank body, it is mounted so as to be suspended from the tank body and the lower end of the partition plate is attached. Since the part is slidably fitted in the slit of the tank body, the partition plate absorbs the variation in height of the tank body.

[0012]

【Example】

 Next, an embodiment of the heat exchanger according to the present invention will be described with reference to the accompanying drawings of FIGS. However, the heat exchanger to which this embodiment is applied is almost the same as the above-mentioned conventional example, and the only difference is the mounting structure of the partition plate 5 to the tank body 8, so only the differences will be described.

That is, as in the conventional example, the tank main body 8 is formed by punching out a plate-like clad material whose front and back surfaces or one surface is coated with a brazing material and performing a drawing process to form a box shape. A slit 20 having the same length dimension as the width dimension of the partition plate 5 to be described later is provided on the bottom surface of the substantially central portion, and a notch portion 21 is formed on the upper edge of the opposing side wall located on the same plane as the slit 20. , 21 are provided respectively.

On the other hand, the partition plate 5 is a substantially rectangular plate material for partitioning the tank main body 8, and its upper side edge portion is a protrusion that engages with the notches 21 and 21 of the tank main body 8, respectively. 22 and 22 are provided.

Because of the above configuration, the lower end portion 23 of the partition plate 5 is fitted into the slit 20 of the tank body 8, and the protrusions 22 and 22 of the partition plate 5 are cut out portions 21 and 21 of the tank body 8. After being engaged with each other, by covering the tank body 8 with the header 9, the tank body 8 is integrated by brazing as in the conventional example.

Therefore, for example, as shown in FIG. 2, even when the height dimension H ₁ of the tank body 8 is larger than the predetermined height dimension T of the partition plate 5, the dimension of the cutout portion 21. Since the partition plate 5 is highly accurate, and the partition plate 5 is hung on the opposite side walls of the tank body 8, and the entire lower end portion 23 of the partition plate 5 is fitted in the slit 20, the partition plate 5 is The variation in the height dimension of 8 is absorbed, and no gap is formed in the vicinity of the upper end portion of the partition plate 5 as in the conventional example.

Further, as shown in FIG. 3, even when the height dimension H ₂ of the tank body 8 is smaller than the predetermined height dimension T of the partition plate 5, the entire lower end portion 23 of the partition plate 5 is Since it projects downward from the bottom surface of the tank body 8, the partition plate 5 absorbs variations in the height of the tank body 8 and, like the above, no gap is created.

Moreover, since the lower corners of the partition plate 5 are not fitted into the slits 20 and do not come into contact with the inner surface corners of the tank body 8, the shape of the inner surface corners of the tank body 8 is reduced by drawing. Even if there is variation, the gap does not occur near the lower end portion 23 of the partition plate 5 as in the conventional example.

[0019]

[Effect of device]

 As is clear from the above description, according to the heat exchanger tank structure of the present invention, the variation in the height dimension generated in the tank body due to the drawing process can be suspended in the notch portion of the tank body. Since the partition plate attached to the partition absorbs it, there is no gap between the inner peripheral surface of the tank structure and the partition plate. Therefore, unlike the conventional example, the heat medium does not leak, and a heat exchanger having a desired heat exchange performance can be obtained. Moreover, since it is not necessary to provide a protruding portion in the tank body as in the conventional example, there is an effect that the cross-sectional area of the flow passage becomes large and the pressure loss in the pipe is reduced.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of essential parts showing an embodiment of a heat exchanger according to the present invention.

FIG. 2 is a partial sectional view showing an embodiment of a heat exchanger according to the present invention.

FIG. 3 is a partial cross-sectional view showing an embodiment of a heat exchanger according to the present invention.

FIG. 4 is a front view showing a heat exchanger according to a conventional example.

FIG. 5 is a plan view showing a heat exchanger according to a conventional example.

FIG. 6 is an exploded perspective view of essential parts showing a heat exchanger according to a conventional example.

FIG. 7 is a partial cross-sectional view showing a heat exchanger according to a conventional example.

FIG. 8 is a partial cross-sectional view showing a heat exchanger according to a conventional example.

[Explanation of symbols]

3 ... 1st tank structure, 5 ... Partition plate, 8 ... Tank main body, 9 ... Header, 20 ... Slit, 21 ... Notch part,
22 ... Protrusion, 23 ... Lower end.

Claims (1)

[Scope of utility model registration request] 1. A plurality of tubes are attached in communication between the first tank structure and the second tank structure to partition the inside of the first tank structure with a partition plate, and a heat medium is applied to the first tank structure. In a heat exchanger provided with a supply port and a discharge port, the first tank structure is formed by a box-shaped tank body having a substantially U-shaped cross section and a header fitted to the tank body, The bottom surface has a length dimension that is substantially the same as the width dimension of the partition plate, and a slit that fits the lower end portion of the partition plate is provided, and a slit is formed at the upper edge portion of the opposing side wall of the tank body. While providing the notch,
A heat exchanger characterized in that projecting portions that engage with the cutout portions of the tank body are provided at upper edges of both end surfaces of the partition plate.