JP2514456Y2 - 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 condenser useful for various cooling systems and a heat exchanger used for a vehicle radiator.

[0002]

2. Description of the Related Art A conventional heat exchanger of this type is shown in FIG.

In the figure, reference numeral 1 designates a pair of circular tubular header-pipes which face each other at a predetermined interval, and whose upper and lower ends are closed by a lid 1a. Also, one header-pipe 1
The heat medium inflow pipe 1b is provided on the upper side surface of the other header-
The heat medium outflow pipes 1c are connected to the lower side surfaces of the pipes 1, respectively.

Reference numeral 2 designates a plurality of flat tubes, which are spaced apart from each other by a predetermined distance and whose both ends are in each header-pipe 1.
It is inserted and connected to the side of.

Numeral 3 is a heat transfer fin interposed between the tubes 2 and formed of a corrugated thin plate.
Is in contact with

In this heat exchanger, one header-
The heat medium flowing into the pipe 1 flows into each tube 2,
Heat exchanges with the air and the like through the fins 3 while flowing through each tube 2, and then flows out from the other header-pipe 1.

[0007]

However, in the conventional heat exchanger, since the tube 2 is inserted into the header-pipe 1, the inner diameter of the header-pipe 1 is at least larger than the width of the tube 2. Must also be large. Therefore, there is a problem that the internal volume of the header-pipe 1 that is not directly involved in heat exchange becomes large, and the amount of heat medium used increases. Freon gas, which has been regarded as a problem in recent years, is often used as the heat medium, and an increase in the amount of heat medium used may not only increase the cost but also lead to environmental damage.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a heat exchanger capable of reducing the inner volume of the header-pipe and the amount of heat medium used. To provide.

[0009]

In order to achieve the above object, the present invention inserts a pair of header pipes facing each other at a predetermined interval, and inserts both ends into the peripheral side walls of each header pipe. In a heat exchanger provided with a tube for circulation of a heat medium, in the peripheral side wall of the header pipe ,
Insert the side wall on the insertion side of the tube in the axial direction of the header pipe.
The whole is bent toward the inside of the header pipe.

[0010]

According to the heat exchanger of the present invention, a part of the header-pipe in the circumferential direction is curved toward the inside of the header-pipe, so that the internal volume of the header-pipe is reduced.

[0011]

1 to 3 show one embodiment of the present invention, in which the same components as those of the prior art are denoted by the same reference numerals. That is, 2 is a tube and 3 is a fin.

In FIG. 1, reference numeral 4 denotes a header pipe, and a curved portion 4a that curves toward the inside of the header pipe 4 is formed on a part of the circumferential direction, that is, on the side surface on the tube insertion side. The curved portion 4a is formed in advance when the header-pipe 4 is manufactured by the extrusion manufacturing method, or as shown in FIG. 2 (a), a circular header-pipe 4'having a circular tubular shape similar to the conventional example. Is prepared, and a round bar-shaped jig A is pressed against its side surface as shown in FIG. 2 (b). Reference numeral 4b is a lid that closes the upper and lower ends of the header-pipe 4, and has the same shape as the cross-sectional shape of the header-pipe 4.

In the heat exchanger of this embodiment, the header
The cross-sectional shape of the pipe 4 is substantially crescent-shaped, and its internal volume is about two-thirds of that of a circular pipe.

As described above, according to the heat exchanger of this embodiment, the curved portion 4a that curves toward the inside of the header-pipe 4 is formed in a part of the header-pipe 4 in the circumferential direction, and the internal volume thereof is increased. Since it is smaller than the circular one by about two-thirds, the amount of heat medium used is reduced, which can contribute to cost reduction and CFC regulation. Further, as shown in FIG. 3, since the curved portion 4a is formed on the side surface of the header pipe 4 on the tube insertion side, the tube 2 is deeper than before, that is, the insertion end of the tube 2 is the header. It can be inserted until it hits the inner surface of the pipe 4. Therefore, the inserted tube 2 can be positioned by the contact between the tube 2 and the header pipe 4.

FIG. 4 shows another embodiment of the present invention, in which the header pipe is composed of two members, and one member is provided with a curved portion.

That is, the header-pipe 5 shown in FIG.
Consists of a tubular member 5a that is open in the longitudinal direction at a portion in the circumferential direction, and a plate-shaped bending member 5b that bends toward the inside of the tubular member 5a, facing each other at the opening edge of the tubular member 5a. Each of the joining pieces 5 is formed by forming an extending joining piece 5c.
Both ends of the curved member 5b are joined to the inner surface of c.

The header-pipe 6 shown in FIG.
Is composed of a tubular member 6a and a bending member 6b similar to those in FIG. 4 (a), and joint pieces 6c are formed at both ends of the bending member 6b.

The header-pipe 7 shown in FIG.
Is composed of a tubular member 7a and a bending member 7b similar to those shown in FIG. 4 (b), the tip side of the joining piece 7c of the bending member 7b is extended along the side surface of the tubular member 7a, and the extension portion 7d forms a tubular shape. The open end of the member 7a is surrounded.

Further, the header-pipe 8 shown in FIG.
Includes a tubular member 8a and a bending member 8b similar to those in FIG. 4 (b), and the bending portion of the bending member 8b is formed in a triangular shape.

Further, the header-pipe 7 shown in FIG.
Is composed of a tubular member 9a and a bending member 9b similar to those in FIG. 4 (b), and the bending portion of the bending member 9b is formed in a trapezoidal shape.

[0021]

As described above, according to the heat exchanger of the present invention, since the inner volume of the header-pipe can be made small, the amount of heat medium used becomes small, which leads to cost reduction and freon regulation. You can contribute.

[Brief description of drawings]

FIG. 1 is an overall perspective view of a heat exchanger showing one embodiment of the present invention.

FIG. 2 is an explanatory diagram showing a method of forming a curved portion.

FIG. 3 is a diagram showing a state of inserting a tube into a header-pipe.

FIG. 4 is a sectional view of a header-pipe showing another embodiment of the present invention.

FIG. 5 is an overall perspective view of a conventional heat exchanger.

[Explanation of symbols]

2 ... tube, 4,4 ', 5,6,7,8,9 ... header-pipe, 4a ... curved part, 5b, 6b, 7b, 8b, 9
b ... curved member

Claims (1)

(57) [Scope of utility model registration request] 1. A heat exchanger comprising a pair of header pipes facing each other at a predetermined interval, and a heat medium distribution tube having both ends inserted and connected to peripheral side walls of each header pipe. In the peripheral side wall of the header pipe,
A heat exchanger characterized in that an inlet side wall is curved toward the inside of the header pipe over the entire axial direction of the header pipe.