JPH05157483A - Heat exchanger - Google Patents

Abstract

PURPOSE:To facilitate the mounting of a mounting metal by arranging the mounting metal which is mounted on a pair of cylindrical headers connected to both ends of a plurality of flat tubes made up of fitting parts to be fitted into the headers being wrapped from the side thereof and a connecting piece with which the both are connected successively. CONSTITUTION:In a heat exchanger body A which has a plurality of flat tubes 1 arranged horizontally from top to bottom and fins 2 disposed at each gap between adjacent tubes 1 and 1 while both ends of each flat tube 1 joined liquidtight on a pair of cylindrical headers 5 left and right, a mounting metal 10 made of an aluminum alloy is mounted on the cylindrical header 5 to mount the heat exchanger body A on the mounting side of a body or a car body or the like. In this case, respective mounting metals 10 are made up of a pair of short-sized header fitting parts 12 and 12 which are fitted securely to the top and bottom of the headers 5, a fine strip shaped link piece 13 to connect the fitting parts 12 and 12 successively, and a mounting piece 14. The fitting parts 12 are each made up of a partially notched cylindrical header wrapping piece 12a and a pair of extension pieces 12b.

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 in, for example, a car air conditioner condenser or a radiator, and more particularly to a so-called header type heat exchanger having a tubular header.

[0002]

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

By the way, in this type of heat exchanger, a mounting metal fitting (110) is attached to the header (5) (6) in order to mount it on a vehicle body as a condenser for a car cooler, or to attach an accessory to it. ) (111) is attached.

As the mounting brackets (110) (111) of this type, for example, as shown in FIG. 8, the notch circumference of the cross section having a corresponding shape that fits the outer peripheral surfaces of the headers (5) (6). The holding piece (112a) having a shape and the extending pieces (112a) facing each other and extending in parallel to each other over the entire length of the opposite edge thereof.
b) (112b) and a pair of upper and lower attachment pieces (114) (11) attached to the upper and lower ends of the holding piece (112a) in an outwardly protruding shape.
4) It is known that it is composed of and. However, as shown in FIGS. 6 and 7, the lever fittings (110) and (111) are arranged such that the holding pieces (112a) are fitted and arranged on the headers (5) and (6), and the extension pieces (112b) are arranged. ) (112b) is placed on both sides of the tube (1), and a fastening member (B) such as a bolt is inserted from one extension piece (112b) toward the other extension piece (112b). Both extension pieces (112b) (112b) are fastened and fixed, and if necessary, the headers (5) (6), the fins (2), etc. are integrated by brazing.

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

[0006]

However, in a heat exchanger of the type in which the heat exchange medium inlet / outlet pipes are mounted above or below one of the left and right headers, the one of the headers is as described above. Even if you try to attach a header-holding type mounting bracket, the inlet / outlet pipe will interfere and you will not be able to arrange it so that it will be inserted from the end of the header. Fitting is also extremely difficult.

[0007] On the other hand, it is conceivable to divide the mounting metal fittings before and after the heat exchanger and to fasten and fix them by combining them, but this increases the number of parts and complicates parts management until mounting. Not only that, but since the front and rear parts are separate, it is difficult to set both properly and quickly, and the workability is poor.

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

[0009]

In the present invention, therefore, a pair of short holding members, which can be forcibly fitted to the header from the side thereof, and a member connecting these members are used as the mounting metal fittings. The short holding member is forcibly fitted and attached to the header from the side thereof.

That is, according to the present invention, a plurality of flat tubes are stacked and arranged in the thickness direction with fins interposed therebetween, and one ends of these tubes are communicatively connected to a cylindrical header, and In a heat exchanger in which a mounting bracket is attached to a header, the mounting bracket is a pair of short-length header fitting portions that are arranged in a spaced-apart manner so that the mounting bracket can be forcibly fitted to the header in a held state. A heat exchanger is characterized in that it has a connecting piece that connects these and.

[0011]

The metal fittings are attached to the header by forcibly fitting the two short length header fitting portions of the fittings from the sides of the headers. Even in a heat exchanger of the type in which the heat exchange medium inlet / outlet pipes are provided on the upper end side and the lower end side of one of the headers so as to project laterally, similarly, the mounting bracket is arranged from the side of the header as described above. Installed.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to illustrated embodiments in which it is applied to a car air conditioner condenser.

In FIGS. 1 to 5, (A) is a heat exchanger main body, and the main body is a plurality of flat aluminum tubes (1) vertically arranged in a horizontal state and adjacent tubes (1). It has aluminum fins (2) arranged in the fin interposition gap between (1). The tube (1) is composed of a flat extruded mold material made of an aluminum material. The tube (1) may be a so-called harmonica tube of a porous type. The fin (2) is a so-called corrugated fin bent in a meandering shape, and is joined to the tube by brazing. The fins (2) are preferably cut and raised louvers.

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

(5) and (6) are a pair of left and right cylindrical headers, each of which is formed of a single aluminum pipe member having a circular cross section. Each header (5)
Tube insertion holes (5a) and (6a) are formed in (6), and both ends of each tube (1) are inserted into the holes (5a) and (6a), and they are liquid-tight by brazing. It is firmly joined and connected. For such brazing, header (5)
(6) is formed by an electric resistance welded tube made of a brazing sheet having an outer surface coated with a brazing material layer, and the fins (2) are formed by a brazing sheet, and each tube (1), fin (2), side plate ( It is desirable that the 3) and 4) and the headers 5 and 6 are joined and integrated by collective brazing in a vacuum heating furnace or the like in order to improve productivity.

(7) is a pipe for heat exchange medium inlet, (8)
Is a pipe for the outlet, and (9) is a partition plate provided in the left and right headers for longitudinally partitioning the header. The heat exchange medium flowing from the heat exchange medium inlet pipe (7) is a heat exchanger. The fins (2) formed between the tubes (1) and (1) flow in a meandering manner through the heat exchange medium passage in the main body (A) and flow out from the heat exchange medium outlet pipe (8).
It is said that heat is exchanged with the air flowing through the air-flowing gap including the air, and the air is condensed.

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

The two mounting brackets (10) and (11) are symmetrical to each other. For convenience of explanation, only the left mounting bracket (10) will be described, and the right mounting bracket (1) will be described.
Regarding 1), the corresponding portions are denoted by the same reference numerals and the description thereof is omitted.

As shown in FIGS. 1 to 5, the metal fitting (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) which is fitted and fixed to, and both fitting portions (12) and (12) are connected by a strip-shaped connecting piece (13).

The short header fitting portion (12) (12)
In both cases, the header holding piece (12a) having a correspondingly shaped cross-section with a partially cut-away circumferential cross-section that fits snugly on the outer peripheral surface of the header (5) and the parallel extending portions from the opposite edges thereof. The extended piece (12b) (12b).
Fastening member insertion holes (12c) (12c) such as bolts are formed at corresponding positions in the extended pieces (12b) (12b). On the other hand, to the header holding piece (12a), an outwardly protruding mounting piece (14) having a fastening member insertion hole (14a) is attached by welding or the like.

The mounting metal fitting (10) comprises a short header fitting portion (12) (12) and a connecting piece (1) for connecting the same.
3) is integrally molded, and the attachment piece (14) is joined thereto by welding or the like, so that it can be easily manufactured.

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, the short header fitting portions (12) (12) are forcibly fitted to the header (5) from the side thereof, and therefore, a deformation that allows the fitting is allowed. It is necessary to be, and in that sense, it is preferable that the length is as short as possible. Needless to say, it is necessary to set an appropriate length in relation to the mounting strength for the header (5).

Both the short header fitting portions (12) (1)
2) has an advantage that the fitting and disposing work can be easily performed because 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 fitting and arranging in this way, the fastening member insertion hole (12c) of one extension piece (12b) to the fastening member insertion hole (1) of the other extension piece (12b) at the corresponding position.
By inserting a fastening member (B) such as a bolt toward 2c) and fastening it, both extension pieces (12b) (12)
B) is clamped and fixed on both sides of the tube (1). As a result, the mounting metal fitting (10) is attached to the heat exchanger main body (A) with sufficient strength, but if necessary, it is further integrated with the header (5), the fin (2) and the like by brazing. It may be done.

Therefore, the heat exchanger is mounted on the mounting side of the vehicle body or the like via the mounting bracket (10), or accessories are mounted on the heat exchanger for use. ..

In the above embodiment, one of the headers is provided with the heat exchange medium inlet / outlet pipe, but of course the inlet pipe and the outlet pipe are attached to different headers. The present invention also applies to radiators and other heat exchangers other than car air-conditioning condensers.

[0027]

As described above, in the heat exchanger according to the present invention, the mounting metal fitting has the short header fitting portion which can be forcibly fitted to the header in the embracing state from the side. For example, even in a heat exchanger of the type in which the heat exchange medium inlet / outlet pipes are provided at the upper and lower ends of one header in a laterally protruding shape, these pipes interfere with each other and cannot be arranged. Such inconvenience can be eliminated.

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

Further, since the mounting metal fitting is an integral body in which both short header fitting portions are connected by the connecting piece,
Not only can the mounting work be performed efficiently, but there is an advantage that the number of parts is small and the parts management up to the mounting work is easy.

[Brief description of 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 in FIG.

5 is an enlarged cross-sectional view taken along line VV of FIG.

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 in which a mounting bracket is separated from a header in the heat exchanger.

[Explanation of symbols]

 1 Flat Tube 2 Fins 5 Cylindrical Header 6 Cylindrical Header 7 Heat Exchange Medium Inlet Pipe 8 Heat Exchange Medium Outlet Pipe 10 Mounting Bracket 11 Mounting Bracket 12 Short Header Fitting 13 Connecting Piece

Claims (1)

[Claims] 1. A plurality of flat tubes (1) are stacked in the thickness direction with fins (2) interposed between them, and one end of these tubes (1) has a cylindrical header (5). ) (6) communicated and connected to the header (5)
In the heat exchanger in which the mounting brackets (10) and (11) are mounted on (6), the mounting brackets (10) and (11) are the header (5).
(6) can be forcibly fitted into the hug state from the side,
A pair of short header fitting portions (12) arranged in a spaced manner
A heat exchanger comprising (12) and a connecting piece (13) connecting these.