JP2515739Y2 - 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 heat exchanger made of metal such as aluminum used as a condenser for a car air conditioner, a heat exchanger for a room air conditioner and the like.

[0002]

2. Description of the Related Art For example, as a condenser for a car cooler, a heat exchanger called a multi-flow or a parallel flow as shown in FIG. 3 and FIG. It tends to be used favorably as a loss realizable. In this heat exchanger, a pair of hollow headers (3) and (3) are connected to both ends of a plurality of tubes (1) arranged in parallel at a predetermined interval so that the tubes (1) are connected to each other. The corrugated fins (2) are arranged in the.

A bracket for attaching the heat exchanger to a vehicle body or the like is attached to the heat exchanger. In this case, the mounting portion of the bracket is inclined in relation to the mounting side, that is, the vehicle body side. You may need to

Conventionally, in such a case, for example, as a structure for fixing the lower side of the heat exchanger to the vehicle body side, FIG.
The structure shown in (b) was adopted. That is,
As a bracket (51), it is U-shaped and its middle side (51
a) is formed in such a manner that it is inclined with respect to the left and right side parts (51b) (51b), and the projection (51c) for insertion is attached to the outer surface of the middle side part (51a). Is arranged from the lower edge side of the heat exchanger body so that the heat exchanger core is sandwiched by the pair of side portions (51b) (51b), and both side portions (51b) (51b) The structure is such that the two are fastened together by a plurality of screws (52) (52) inserted through the gap between the tubes (1). In addition, in the above structure, in order to prevent the screws (52) and (52) from interfering with the corrugated fins (2), it is necessary to previously form a screw insertion portion such as a fin approach.

[0005]

However, in the mounting structure as described above, there is a risk that the screw (52) may come into contact with the tube (1) that is in contact with the heart of the heat exchanger and damage the tube (1). It was necessary to attach the bracket (51) due to the additional work such as the above. Also. Since the structure of the bracket itself is adapted in order to make the mounting portion of the bracket (51) inclined, there is a problem that the molding process of the bracket tends to be complicated.

The present invention solves the above-mentioned conventional problems and allows the bracket to be mounted without worrying about damaging the tube, and the mounting work of the bracket does not require any labor and the mounting side. Therefore, it is an object of the present invention to provide a heat exchanger capable of facilitating the structure of the bracket itself even when the mounting portion of the bracket needs to be inclined.

[0007]

To solve the above problems, the present invention is directed to a heat exchanger in which a plurality of tubes are connected in communication with a hollow header formed by closing an end opening of a pipe with a cap. The heat exchanger is characterized in that the outer end surface of the header cap is formed into an inclined surface, and a mounting member such as a bracket is attached using the inclined surface.

The term "cap" is not limited to one that closes the pipe end portion in the externally fitted state, but one that closes the pipe end portion in the internally fitted state. In short, it is attached to the pipe end portion so as to close the pipe end opening. It is used in the meaning including various configurations.

[0009]

In the above heat exchanger, since the mounting member such as the bracket is attached to the header cap, there is no risk of tube damage due to the fastening member or the like when mounting the mounting member. Moreover, work such as fin approach is not necessary, and the work of attaching the attachment member does not take much time. Further, since the end surface of the header cap is inclined and the mounting member is mounted using this inclined surface, the structure of the mounting member is simplified and its molding is facilitated.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment in which the present invention is applied to an aluminum condenser for a car cooler will be described with reference to the drawings. Needless to say, the present invention can be widely applied to various heat exchangers having headers such as heat exchangers for room air conditioners and oil coolers.

In the condenser for a car cooler shown in FIGS. 3 and 4, (1) is a flat tube and (2) is a corrugated fin, which are alternately arranged in parallel in a vertical direction. (3) (3) is a pair of left and right headers, which are connected to both ends of the flat tube (1) in a communicating state. (4) is an inlet pipe, which is connected to the right header (3), and (5) is an outlet pipe, which is connected to the left header (3). (7) is an upper mounting bracket for attaching the heat exchanger body to the vehicle body at its upper portion, and (6) is a lower mounting bracket for attaching the heat exchanger body to the vehicle body at its lower portion according to the present invention Is. A partition member (8) partitions the headers (3) and (3) at a predetermined height position so that the heat exchange medium circulates in the tube (1) group in a meandering manner. (9) (9) is a side plate,
The upper and lower outermost corrugated fins (2) (2) are arranged on the outer side of the corrugated fins to protect them.

The flat tube (1) is made of an extruded aluminum material, and uses a so-called harmonica tube whose interior is divided into a plurality of chambers by partition walls to enhance heat transfer performance. In addition, an electric resistance welded pipe may be used.

The corrugated fin (2) is a corrugated sheet material having a width substantially the same as the width of the tube (1) and cut and raised the louver. The sheet material is aluminum with a brazing material layer clad. I am using a brazing sheet.

The headers (3) and (3) are composed of a cylindrical header pipe (3a) and header caps (3b) and (3c) for closing the upper and lower end openings of the pipe (3a). The header pipe is formed into a pipe shape by bending an aluminum brazing sheet having a brazing material layer clad on one side or both sides into a state where both side edges are abutted, as shown in FIG. This seam is joined at the time of brazing described later. Then, on one side surface of the pipe (3a), tube insertion holes (11) are arranged in rows at predetermined intervals in the length direction. The header pipe (3a)
For this, an electric resistance welded pipe, an extruded pipe or the like may be used.

The header caps (3b) (3c)
Is made of aluminum and is made of extruded or forged products. The header cap in the present invention is applied to the cap (3c) that closes the lower end opening of the header pipe (3a). The cap (3c) is made larger in size than the upper cap (3b) for mounting the lower mounting bracket (6). As shown in FIG. -Shaped, with a recess (3d) formed on the upper surface to fit the end of the header pipe (3a), and the lower surface as a bracket mounting surface that is inclined in the front-rear direction of the heat exchanger (3e) Is formed in. A screw hole (3f) for mounting a bracket is formed in the inclined surface (3e) perpendicularly to the inclined surface (3e).

The lower mounting bracket (6) is a press-formed product made of an aluminum plate, and is a strip-shaped one having a rising plate portion (6a) for reinforcement and positioning formed on both side edges, and one end portion thereof. Is provided with a screw through hole (6b), and a mounting projection (6c) is provided on the lower surface of the other end. The rising plate portion (6a) is inclined, and when the bracket (6) is placed on the lower surface of the cap (3c), the rising plate portion (6a) follows the side surface of the cap (3c). It is arranged to have a positional relationship.

In the manufacture of the heat exchanger, first, the components of the heat exchanger are assembled in a tentatively assembled state. That is, a plurality of flat tubes (1) are arranged in parallel in the thickness direction at predetermined intervals, and headers (3) are provided at both ends thereof.
(3) is fitted by inserting the end of the tube (1) into the tube insertion hole (11), and the corrugated fins (2) are inserted and arranged between the tubes (1). Besides, the side plates (9) (9), the upper mounting bracket (7), the inlet / outlet pipes (4) (5), and the like are assembled.
Then, a flux is blown onto this heat exchanger assembly and passed through a brazing furnace, and the heat exchanger constituent members are collectively brazed to each other, and the whole is joined and integrated. And
For the heat exchanger joined and integrated as described above,
Finally, attach the lower mounting bracket (6). That is, the end of the bracket (6) on the side of the screw through hole (6b) is fitted and arranged in the lower portion of the lower header cap (3c). With this arrangement, both rising plates (6a) of the brat (6)
(6a) is along the side of the cap (3c), and the cap (3c)
The irregular shape restricts the movement of the bracket (6) in the rotation direction. Further, in this arrangement state, the bracket (6) is arranged along the inclined surface (3e) of the cap (3c), so that the bracket (6) is arranged in an inclined state. In this arrangement, using the screws (16), the bracket (6)
Is fastened to the cap (3c). As described above, the bracket (6) is restricted from rotating in the rotational direction with respect to the cap (3c) by the engagement between the rising plate portion (6a) and the side surface of the cap (3c). Since only one screw (16) is required, the work of attaching the bracket (6) can be simplified. The condenser is manufactured as described above.

[0018]

As described above, according to the present invention, since the mounting member such as the bracket is mounted on the header cap, there is no fear of tube damage due to the fastening member when mounting the mounting member. Moreover, the work of bringing the fins together is unnecessary, and the work of mounting the mounting member can be performed efficiently. Moreover, since the outer end surface of the header cap is formed as an inclined surface and the mounting member is attached to the inclined surface in order to make the mounting portion of the mounting member in an inclined state, the structure of the mounting member can be simplified, The molding becomes easy, and the cost of the mounting member can be reduced.

[Brief description of drawings]

FIG. 1 is a perspective view showing a mounting state of a lower mounting bracket.

[Fig. 2] Lower mounting bracket, header cap,
It is a perspective view which shows a header pipe in a mutually separated state.

FIG. 3 is an overall front view of a heat exchanger.

FIG. 4 is an overall side view of the heat exchanger.

5A and 5B show a conventional mounting structure of a lower mounting bracket, in which FIG. 5A is a side view and FIG. 5B is a front view.

[Explanation of symbols]

 1 ... Flat tube 3 ... Header 3a ... Header pipe 3c ... Header cap 3e ... Inclined surface 6 ... Mounting bracket (mounting member)

Claims (1)

(57) [Scope of utility model registration request] 1. A heat exchanger in which a plurality of tubes are connected in communication with a hollow header formed by closing an end opening of a pipe with a cap, and an outer end surface of the header cap is an inclined surface. A heat exchanger, wherein the heat exchanger is formed, and a mounting member such as a bracket is mounted using the inclined surface.