JP3133431B2 - Heat exchanger - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat exchanger used for a condenser or a radiator for a car air conditioner, and more particularly to a so-called header type heat exchanger having a tubular header.

[0002]

2. Description of the Related Art For example, as a heat exchanger of this type used for a condenser for a car air conditioner, as shown in FIG. 6, a plurality of flat tubes (1) are arranged with fins (2) interposed therebetween. The left and right ends of each of these tubes (1) are connected to a pair of left and right cylindrical headers (5) and (6), and are connected to the two headers (5) and (6). A so-called multi-flow type heat exchanger is known in which pipes (7) and (8) for heat exchange medium entrance and exit are connected to each other.

In this type of heat exchanger, mounting brackets (110) are attached to the headers (5) and (6) for mounting the heat exchanger on a vehicle body as a condenser for a car cooler, or for attaching an accessory to the heat exchanger. ) (111) is attached.

As shown in FIG. 8, for example, as shown in FIG. 8, this type of mounting bracket (110) (111) has a notched circular cross-section having a corresponding shape that fits snugly on the outer peripheral surface of the header (5) (6). The holding piece (112a) having a shape and the opposing extending piece (112) extending in parallel with each other over the entire length of the opposing edge thereof.
b) and (112b), and a pair of upper and lower mounting pieces (114) (11) that are mounted on the upper and lower ends of the holding piece (112a) so as to protrude outward.
4) is known. As shown in FIGS. 6 and 7, the mounting brackets (110) and (111) have their holding pieces (112a) fitted to the headers (5) and (6). ) (112b) With the tube (1) abutting on both sides, a fastening member (B) such as a bolt is inserted from one extension piece (112b) to the other extension piece (112b). Then, the two extension pieces (112b) and (112b) are fastened and fixed. If necessary, the headers (5) and (6), the fins (2) and the like are integrated by brazing.

In the mounting bracket of the header holding type, when the mounting bracket is mounted on the headers (5) and (6), the axes are aligned from the end side where the pipe for the heat exchange medium inlet / outlet is not provided. It can be easily attached by inserting and inserting and fixing and fixing as described above.

[0006]

However, in a heat exchanger of the type in which the heat exchange medium inlet / outlet pipe is mounted above or below one of the right and left headers, one of the headers is connected to the heat exchanger as described above. Even if you try to attach a mounting bracket of a header holding type, the entrance and exit pipes will be in the way and it will not be possible to fit and insert it from the end of the header, but this will be forced from the side of the header It is also very difficult to fit.

On the other hand, it is conceivable that the mounting bracket is divided before and after the heat exchanger and is fastened and fixed by combining them. However, this increases the number of parts and makes it difficult to manage the parts until mounting. Not only that, but the front and rear parts are separate, there is a problem that it is difficult to perform the setting work of both properly and promptly, resulting in poor workability.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has a header holding type attachment to a header provided with both a heat exchange medium inlet pipe and a heat exchange medium outlet pipe. It is an object of the present invention to provide a heat exchanger with improved productivity in which metal fittings can be easily attached.

[0009]

According to the present invention, a pair of short holding members capable of being forcibly fitted to the header from the side thereof and members connecting them are used as the mounting bracket. The short holding member is forcibly fitted to and attached to the header from the side thereof.

That is, according to the present invention, a plurality of flat tubes (1) are stacked in the thickness direction with fins (2) interposed therebetween, and the tubes (1) are
Both end is communicably connected to a pair of left and right tubular header (5) (6), and heat exchange at the top and bottom of one of the left and right header
Replacement medium entrance / exit pipes (7) and (8) are provided in a laterally projecting shape
The headers (5) and (6) are further attached to mounting brackets (1).
0) In the heat exchanger to which (11) is mounted, the mounting brackets (10) and (11) correspond to the headers (5) and (6).
A pair of short header fitting portions (12) that are forcibly fitted in a holding state from the side thereof and that are arranged vertically apart from each other.
(12) and these header fitting portions (12) and (12)
Circular header holding part (12
a part of the circumferential direction of a) possess a connecting piece of the connected strip-like integral (13), one of the mounting bracket (10) (11)
But the upper and lower pipes for the heat exchanger medium entrance and exit (7)
(8) The header fitting portion (12) at the position between them
(12) is forcibly fitted to the header (5) from the side
The gist of the present invention is a heat exchanger characterized in that it is attached by being entangled .

[0011]

The fitting is attached to the header by forcibly fitting the two short header fitting portions of the fitting for fitting from the side of the header. Even in the case of a heat exchanger in which a heat exchange medium inlet / outlet pipe is provided in the upper end side and the lower end side of one of the headers in a laterally protruding manner, the mounting brackets are similarly arranged from the side of the header as described above. Mounted.

[0012]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing an embodiment of the present invention applied to a condenser for a car air conditioner.

In FIG. 1 to FIG. 5, (A) shows a heat exchanger main body, which is composed of a plurality of aluminum flat tubes (1) arranged vertically in a horizontal state and an adjacent tube (1). (1) It has aluminum fins (2) arranged in the intervening fin gaps. The tube (1) is made of a flat extruded material made of an aluminum material. As the tube (1), a porous type tube called a so-called harmonica tube may be used. The fin (2) is a so-called corrugated fin bent in a meandering shape, and is joined to the tube by brazing. As the fin (2), it is desirable to use a fin cut and raised.

(3) and (4) are aluminum side plates.

(5) and (6) are a pair of left and right cylindrical headers, each of which is formed of one aluminum pipe material having a circular cross section. Each header (5)
In (6), tube insertion holes (5a) and (6a) are drilled, and both ends of each tube (1) are inserted into the holes (5a) and (6a), and a liquid-tight state is formed by brazing. They are firmly connected. For such brazing, see header (5)
(6) is formed by an electric resistance welded tube formed of a brazing sheet having a brazing material layer formed on the outer surface thereof, and the fin (2) is formed by the brazing sheet. Each tube (1), fin (2), side plate ( 3) (4) and the headers (5) and (6) are desirably joined and integrated by collective brazing in a vacuum heating furnace or the like from the viewpoint of improving productivity.

(7) a pipe for inlet of a heat exchange medium, (8)
Is a pipe for the outlet, and (9) is a partition plate provided in the left and right headers to partition the pipe in the longitudinal direction. The heat exchange medium flowing from the heat exchange medium inlet pipe (7) is a heat exchanger. The fin (2) formed between the tubes (1) and (1) flows out of the heat exchange medium outlet pipe (8) while flowing in a meandering manner through the heat exchange medium passage in the main body (A).
And heat exchange with the air flowing through the air flow gap containing the water.

The left and right headers (5) and (6) have a mounting member (10) made of an aluminum alloy for mounting the heat exchanger body (A) on the mounting side of a vehicle body or the like at its upper end and lower end. (11) is attached.

The mounting brackets (10) and (11) are symmetrical in the left and right directions. For convenience of explanation, only the mounting bracket (10) on the left side will be described, and the mounting bracket (1) on the right side will be described.
Regarding 1), corresponding parts are denoted by the same reference numerals and description thereof is omitted.

As shown in FIGS. 1 to 5, the mounting bracket (10) includes a short header fitting portion (12) fitted and fixed to an upper portion of the header (5) and a lower portion of the header (5). And a short header fitting portion (12) fitted and fixed to the connecting portion, and both fitting portions (12) (12) are connected by a strip-shaped connecting piece (13).

The short header fitting portions (12) (12)
Each of the header holding pieces (12a) has a corresponding cross section and a partially cut-out circumferential shape and fits snugly on the outer peripheral surface of the header (5), and extends parallel to each other from the opposing edge thereof. And extension pieces (12b) and (12b).
The extension pieces (12b) (12b) are provided with holes (12c) (12c) for inserting fastening members such as bolts at corresponding positions. On the other hand, an outwardly protruding attachment piece (14) having a fastening member insertion hole (14a) is attached to the header holding piece (12a) by welding or the like.

The mounting bracket (10) includes a short header fitting portion (12) and a connecting piece (1) for connecting the same.
3) can be easily manufactured by integrally molding and attaching the mounting piece (14) thereto by welding or the like.

The header (5) of the mounting bracket (10)
As shown in FIG. 1, first, the two short header fitting portions (12) and (12) are forcibly fitted and arranged from the side of the header (5). As described above, since the short header fitting portions (12) and (12) are forcibly fitted to the header (5) from the side thereof, deformation that allows the fitting to be performed is allowed. It is necessary to be as short as possible in that sense. However, it is needless to say that it is necessary to set an appropriate length in relation to the attachment strength to the header (5).

The two short header fitting portions (12) (1)
The advantage 2) has an advantage that the fitting and arranging work can be easily performed since the connecting pieces 13 are connected to each other.
However, since the connecting piece (13) does not necessarily contribute to the improvement of the attachment strength to the header, a strip-shaped one is sufficient.

After being fitted and arranged in this manner, the fastening member insertion hole (1) of the other extension piece (12b) at the corresponding position from the fastening member insertion hole (12c) of the one extension piece (12b).
By inserting a fastening member (B) such as a bolt toward 2c) and fastening the same, both extension pieces (12b) (12
b) is clamped and fixed to both sides of the tube (1). As a result, the mounting bracket (10) can be mounted with sufficient strength to the heat exchanger body (A), but if necessary, further brazed to the header (5), the fin (2), etc. You may do it.

Thus, the heat exchanger is mounted on a mounting side of a vehicle body or the like via a mounting bracket (10), or an accessory or the like is mounted on the heat exchanger for use. .

In the above embodiment, one of the headers is provided with a heat exchange medium inlet / outlet pipe. However, it is a matter of course that the inlet pipe and the outlet pipe are mounted on separate headers. The present invention is also applicable to radiators and other heat exchangers other than condensers for car air conditioners.

[0027]

As described above, in the heat exchanger according to the present invention, the mounting bracket has a short header fitting portion which is forcibly fitted to the header in a holding state from the side thereof. , so that hand heat exchange medium inlet and outlet pipes to the upper and lower end portions of the header of even the heat exchanger of the type provided on each side protruded, their pipe can not be fitted arranged in the way Can be eliminated.

Further, the fitting of the mounting bracket to the header can be easily performed by forcible fitting from the side of the header, so that productivity can be improved.

Furthermore, since the mounting bracket is an integral body in which both short header fitting portions are connected by connecting pieces in a part of the circumferential direction of the header holding portion , the mounting operation is not required. Not only can it be performed skillfully, but also has the advantage that the number of components is small and component management up to the mounting operation is easy.

[Brief description of the drawings]

FIG. 1 is an overall front view of a heat exchanger according to the present invention.

FIG. 2 is a left side view of the heat exchanger.

FIG. 3 is a perspective view showing a state in which a mounting bracket is separated from a header.

FIG. 4 is an enlarged sectional view taken along line IV-IV of FIG.

FIG. 5 is an enlarged sectional view taken along line VV of FIG. 1;

FIG. 6 is an overall front view of a conventional heat exchanger.

FIG. 7 is a left side view of the heat exchanger.

FIG. 8 is a perspective view showing a state where a mounting bracket is separated from a header in the heat exchanger.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Flat tube 2 Fin 5 Cylindrical header 6 Cylindrical header 7 Pipe for heat exchange medium inlet 8 Pipe for heat exchange medium outlet 10 Mounting bracket 11 Mounting bracket 12 Short header fitting part 13 Connecting piece

Claims (1)

(57) [Claims] With 1. A plurality of flat tubes (1) are stacked in the thickness direction while interposing the fin (2) therebetween, both ends of the tube (1) is a pair of left and right < The left and right sides are connected to the tubular headers (5) and (6).
A pie for heat exchange medium entrance and exit above and below one of the headers
(7) and (8) are provided in a laterally protruding shape, and the mounting brackets (10) and (11) are further mounted on the headers (5) and (6). ) (11) is the header (5)
(6) can be forcibly fitted to the holding state from the side,
A pair of short header fitting portions (12) and (12) which are vertically spaced apart from each other, and these header fitting portions (12)
Holding a circular header with a notch in section (12)
Department part of the peripheral direction of the (12a) possess a <br/> connecting piece of the strip narrow by connecting together (13) and said mounting bracket (10) (11)
One of the upper and lower heat exchanger medium inlet and outlet pipes
(7) In the position between (8) and (8), the header fitting portion (1)
2) (12) is forcibly fitted to the header (5) from the side
A heat exchanger, wherein the heat exchanger is mounted by being arranged .