JP2520809Y2 - Heat exchanger - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a corrugated fin type heat exchanger whose parts can be easily repaired.

[0002]

2. Description of the Related Art As an example, a heat exchanger for cooling an engine cooling water of a vehicle forms a core by a large number of parallel flat tubes and corrugated fins which are in contact with the flat tubes and fixed by brazing. The tube ends are fluid-tightly connected and fixed to a pair of tanks separated from each other by brazing or soldering. In addition, instead of only brazing the tube end and the tube plate of the tank, O
There is also a structure in which both are fitted in a liquid-tight manner via a ring. During the use of such a heat exchanger, a pressure according to the set pressure of the pressure valve is applied to the tube and the tank.

[0003]

In such conventional heat exchangers, if the fins, tubes, or part of the tank is damaged, it is necessary to replace the entire heat exchanger.
It was difficult to repair and replace each part.

[0004]

Therefore, in the present invention, when a part of a fin, a tube, a tank, or the like is damaged, only the damaged part can be easily replaced, and the assembly is easy and the vibration resistance is excellent. The purpose of the present invention is to provide a heat exchanger, and the following constitution is adopted to achieve the purpose. The heat exchanger of the present invention is a corrugator in which a large number of flat tubes 1 arranged in parallel and the adjacent flat tubes 1 and 1 are interposed, and the folded and bent portions are detachably contacted with the outer surface of the flat tube 1. And fins 2. Then, while the intermediate portion of each flat tube 1 penetrates the intermediate plate 3,
The intermediate plate 3 supports the longitudinal tip of the corrugated fin 2 and both sides of the tip. Further, a tube plate 4 is provided at one end of each of the pair of tanks 5, and a large number of flat holes are formed in the tube plate 4. Then, a short tubular tube socket 8 is liquid-tightly fitted and fixed in the flat hole of the tube plate 4. This tube socket 8 is provided with an annular groove portion 6 which is aligned with the end portion of the flat tube 1 on the outer peripheral surface side of the tank 5, and an elastic seal 7 is fitted in the annular groove portion 6.
Then, a pair of tanks 5 and 5 arranged apart from each other.
A pair of members 9 detachably fastens and fixes between both longitudinal end portions of the member. Both ends of the flat tube 1 are detachably fitted into the annular groove portion 6 of the tube socket 8.

[0005]

In the heat exchanger thus constructed, the tank 5 is separated by removing the pair of members 9, and then the flat tube 1 or corrugated fin 2 which has become a defective component due to damage or the like is removed, and only that component is removed. It is possible to replace it with a good product. That is, when the flat tube 1 is replaced, it can be pulled out from the intermediate plate 3. When replacing the corrugated fin 2, the corrugated fin 2 is compressed to
It is possible to remove the end of the from the intermediate plate 3 and take it out to the outside. Further, in order to attach it, the work may be performed in the reverse order of the removal.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will now be described with reference to the drawings. FIG. 1 is a longitudinal sectional view of a main part of the present heat exchanger, and corresponds to an enlarged vertical sectional view of a portion A in FIG. 2 is a schematic front view of the present heat exchanger, FIG. 3 is an enlarged vertical sectional perspective view of the tube socket 8 in FIG. 1, FIG. 4 is a sectional view taken along the line BB of FIG. 2, and FIG. FIG. 6 is an enlarged view of part C, and FIG. As shown in FIG. 2, the heat exchanger of this embodiment is provided with a pair of tanks 5 which are vertically separated from each other.
The tank 5 has a tube plate 4 arranged at one end thereof, and the tube plate 4 is provided with a large number of flat holes. The tube socket 8 shown in FIGS. 1 and 3 is fitted into this flat hole, and it is liquid-tightly fixed by brazing or soldering. The tube socket 8 is formed in a flat short tube shape, and a flange portion having an L-shaped cross section is integrally formed in an intermediate portion thereof, and an annular groove portion 6 is formed between the flange portion and the short tubular portion. An annular elastic seal 7 such as an O-ring is fitted in the annular groove portion 6. In addition,
The annular groove portion 6 is formed so as to be aligned with the end portion of the flat tube 1 and can be fitted into the end portion. Further, as the elastic seal 7, one having a thickness smaller than the depth of the annular groove portion 6 is fitted.

Next, the corrugated fins 2 are interposed between a large number of flat tubes 1 arranged in parallel with each other, and the folded and bent portions of the corrugated fins 2 are brought into contact with the flat tubes 1. The contact portions are not fixed by soldering or the like as in the prior art, but are arranged so as to be separable from each other.
Further, the intermediate portion of the flat tube 1 penetrates the plurality of intermediate plates 3. The intermediate plate 3 is provided with a large number of tube insertion holes at equal intervals, and claw portions 14 project from both sides in the width direction thereof as shown in FIG. 5 or 6. The interval between the claw portions 14 located on both sides is formed to be substantially equal to the width of the corrugated fin 2. The claws 14 support both edges of the tip of the corrugated fin 2, and the tip of the corrugated fin 2 in the longitudinal direction is supported by the intermediate plate 3. Then, the flat tube 1, the corrugated fins 2, and the intermediate plate 3 form a core, and the members 9 are arranged on both sides of the core. At the same time, both ends of the flat tube 1 are fitted into the tube sockets 8 as shown in FIG. 1, and the tip edges thereof are pressed by the elastic seal 7. In this state, both ends of the member 9 and the tank 5 are fastened and fixed via bolts 13 as shown in FIGS. The upper tank 5 is provided with a water supply cap 10 and an inlet pipe 11, and the lower tank 5 is provided with an outlet pipe 12.
Then, the heat exchange medium flowing in from the inlet pipe 11 flows down from each flat tube 1 from the tank 5 on the upper side, and flows out from the outlet pipe 12 of the tank 5 on the lower side. Then, as an example, an air flow circulates on the outer surface sides of the flat tube 1 and the corrugated fins 2, and heat exchange is performed between the air flow and the heat exchange medium inside the flat tube 1.

[0008]

In the heat exchanger of the present invention, since the flat tube 1, the corrugated fins 2 and the member 9 are formed so as to be separable from each other, each defective part can be quickly replaced. Moreover, since the middle portion of the flat tube 1 is supported by the middle plate 3 and both ends thereof are supported by the tube sockets 8, a heat exchanger having earthquake resistance can be formed. Further, since the separable corrugated fins 2 have their leading edges and both sides of the leading edge portions supported by the intermediate plate 3, the structure is simple and there is no risk of the corrugated fins 2 coming off during use.

[Brief description of drawings]

1 is a longitudinal cross-sectional view of a main part of a heat exchanger of the present invention, which is an enlarged vertical cross-sectional view of a portion A of FIG.

FIG. 2 is a schematic front view of the heat exchanger.

FIG. 3 is an enlarged vertical cross-sectional perspective view of a tube socket 8 used in the present heat exchanger.

FIG. 4 is a sectional view taken along the line BB in FIG.

5 is an enlarged view of part C in FIG.

FIG. 6 is a view on arrow DD in FIG.

[Explanation of symbols]

 1 Flat Tube 2 Corrugated Fin 3 Intermediate Plate 4 Tube Plate 5 Tank 6 Annular Groove 7 Elastic Seal 8 Tube Socket 9 Member 10 Water Cap 11 Inlet Pipe 12 Outlet Pipe 13 Bolt 14 Claw

Claims (1)

(57) [Scope of utility model registration request] 1. A number of flat tubes (1) arranged in parallel,
Is interposed between the adjacent flat tubes (1) (1),
The corrugated fin (2) whose folded back portion is removably contacted with the outer surface of the flat tube (1) and the intermediate portion of each of the flat tubes (1) are insertably and removably penetrated, and the corrugated fin is also provided. An intermediate plate (3) in which the longitudinal tip of (2) and both sides of the tip are supported;
A pair of tanks (5) each having a tube plate (4) having a large number of flat holes at one end thereof, and a flat short tube, which are liquid-tight in the flat holes of the tube plate (4). An annular groove (6) which is fitted and fixed and is aligned with the end of the flat tube (1) on the outer surface side of the tank (5).
And a pair of the tanks (5) and (5) arranged in the longitudinal direction, the tube socket (8) having the elastic seal (7) fitted in the annular groove (6) and the pair of tanks (5) and (5) arranged apart from each other. And a pair of members (9) for removably fastening and fixing the space therebetween, and both ends of the flat tube (1) are detachably fitted in the annular groove portion (6) of the socket (8). Heat exchanger configured as described above.