JP2578557B2 - Heat exchanger - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention is used as a condenser for a car cooler, a heat exchanger for a room air conditioner, or various heat exchangers such as a radiator or an oil cooler.
The present invention relates to a heat exchanger made of metal such as aluminum.

[0002]

2. Description of the Related Art In recent years, for example, as a condenser for a car cooler, a heat exchanger called a multi-flow type or a parallel flow type has been favorably used.

As shown in FIG. 4 (a), this heat exchanger comprises a plurality of tubes (1) arranged in parallel at predetermined intervals, and both ends of the group of tubes (1). And a pair of left and right cylindrical hollow headers (2) and (2) connected to each other, and corrugated fins (3) arranged between the tubes (1) ... and outside the outermost tube (1).
... as a heat exchanger body (4).

For example, in this multi-flow type heat exchanger, for the purpose of attaching it to a vehicle body,
Various brackets are attached to the heat exchanger body (4). In the heat exchanger shown in FIG. 4 (a), a pair of mounting insertion portions (51) (51) having insertion holes (51) and (51) inserted into insertion holes on the vehicle body side are provided at the lower edge of the heat exchanger body (4). Brackets (52) and (52) are attached.

[0005] For example, as a mounting structure of the bracket (52), for example, a U-shaped side plate (for example, a U-shaped side plate disposed outside the outermost fins (3) of the heat exchanger body (4) for protection of the fins or the like). A method utilizing (6) has been proposed. That is, as shown in FIG. 4 (b), the bracket (52) has a U-shaped mounting portion (53), and the side plate portions (54) (54) of the U-shaped mounting portion (53). ) Are placed on each side plate (7) (7) of the side plate (4) in a superposed state, and the screw (8) is attached to the left side plate (5).
4) The bridge (7) and the right side plate (7) (54) are bridged between them and tightened, and thus the bracket (52) is attached to the heat exchanger body (4). Attached to.

[0006]

However, in the conventional bracket mounting structure as described above, when the screw (8) is tightened to a specified torque, the bracket (52) is tightened as shown in FIG. There is a problem that the side plate portions (54) (54) on the side and the side plate portions (7) (7) on the side plate (6) side may be deformed inward. In addition, such deformation may occur even at a specified torque or less. In addition, a pair of brackets (52) (52)
Some work to attach to each side plate (6)
It is troublesome, and the mounting
1) The accuracy of the distance between (51) is difficult to obtain, and sometimes the body
In some cases, there was a problem in mounting on the side.

SUMMARY OF THE INVENTION In view of the above-mentioned conventional problems, the present invention fastens a bracket to a heat exchanger main body in a prescribed tightened state without deforming a mounting side plate on a heat exchanger main body side and a bracket side. co-if it is possible to
Can be easily and firmly attached with high accuracy.
And to provide a heat exchanger and capacity.

[0008]

SUMMARY OF THE INVENTION In view of the above object, the present invention provides an outwardly opening side plate having a U-shaped cross section.
The side plate of the heat exchanger body having
The U-shaped mounting portion of the bracket having the U-shaped mounting portion is
Externally fitted from the opening side and overlapped with each other
Each side plate part and the bra on the side plate side
At the position corresponding to each side plate of the U-shaped mounting part on the
The fastening members such as screws penetrate through the
It is passed between the side plates in a bridge shape and fastened
Heat exchange with bracket attached to the side plate
In the container, the bracket has a length of a side plate.
It consists of a single member having a substantially length corresponding to, 該Bu
At each end of the racket, a pair
The mounting insertion pin is provided in an outwardly projecting shape,
In the U-shaped mounting portion of the bracket, a spacing holding piece that is located near the fastening member through-hole and protrudes between the side plate portions on the heat exchanger body side to maintain a spacing between the side plate portions is provided. A heat exchanger characterized by the above.

[0009]

In the above construction, if the mounting side plates on the heat exchanger body side and the bracket side attempt to be deformed inward due to the progress of the tightening by the fastening member during the mounting of the bracket, the spacing holding piece will prevent the deformation from moving inward. Work to block more. As a result, the bracket is fastened to the heat exchanger body in a prescribed tightened state without deforming each mounting side plate.

[0010]

Next, an embodiment in which the present invention is applied to a multi-flow type condenser for a car cooler will be described.

The heat exchanger of the present invention includes a heat exchanger for various uses such as a heat exchanger for a room air conditioner and a radiator, and a serpentine type in which a tube is bent in a meandering shape to form a heat exchanger core. It is needless to say that the present invention can be widely applied to various types of heat exchangers.

In FIG. 3 showing the overall structure of the heat exchanger, (4) is a heat exchanger body, (9) is a bracket,
(8) is a screw as a fastening member.

In the heat exchanger body (4), (1)... Are flat tubes made of an extruded aluminum material, which are respectively oriented in the left-right direction and are arranged in parallel in a vertical direction at predetermined intervals. I have. (2) and (2) are aluminum hollow headers arranged on both sides of the tubes (1)... And connected to the ends of the tubes (1). (3) are aluminum corrugated fins arranged between the tubes (1) and outside the outermost tube (1). (11) is the refrigerant inlet pipe, and (12) is the outlet pipe. (6) (6) is an aluminum side plate, which is disposed outside the upper and lower outermost corrugated fins (3) for the purpose of fin protection and the like. And each said heat exchanger main body structural member is combined in a temporary assembly state mutually, and is joined and integrated by collective brazing.

In the above heat exchanger body (4), the lower side plate (6) has a U-shaped middle portion in the longitudinal direction excluding both ends as shown in FIGS. And the rigidity is increased. And
In order to use the two side plates (7) and (7) of the U-shaped portion in the middle in the longitudinal direction excluding the both ends, the first and second side plates (7) and (7) have the first As shown in the figure, screw through holes (13) (13) are provided at predetermined positions in the length direction in a corresponding arrangement relationship.

On the other hand, as shown in FIG. 3, the bracket (9) is made of a member made of aluminum or iron having a length substantially coinciding with the length of the side plate (6). the bayonet for mounting a pair to be inserted into the insertion hole of the vehicle body (16) (16) therebetween
It is mounted in a downwardly projecting state at a predetermined interval .

As shown in FIGS. 1 to 3, the bracket (9) is formed so as to have a U-shape in cross section over its entire length. It constitutes the mounting part (10). The mounting portion (10) is formed such that its side plate portions (17) and (17) are arranged so as to be superimposed on the outer surfaces of the side plate portions (7) and (7) of the side plate (6). I have. The side plate portions (17) and (17) of the mounting portion (10) correspond to the screw through holes (13) and (13) of the side plate (6), respectively. ) Is provided. The peripheral edge of one (15) of these screw through holes (14) (15) is burred so as to protrude outward, and a thread groove is formed in the inner peripheral portion.

Further, the bottom plate (18) of the mounting portion (10) of the bracket (9) is located near the screw holes (14, 15) so as not to hinder the insertion of the screw (8). In, the spacing member (19) is raised by cutting and raising. As shown in FIG. 2, when the bracket (9) is attached to the side plate (6), the height of the space holding piece (19) is such that the space holding piece (19) is It is set to protrude between both side plate portions (7) and (7) of (6). In addition, the spacing member (1
9) The width of both side plates (7) of the side plate (6)
(7) The interval holding piece (19) is set to be substantially equal to the interval length between them, and the interval holding piece (19) is arranged in a suitable state between both side plates (7) (7) of the side plate (6). It has been done.

First, the mounting of the bracket (9) is as follows.
Each side plate part (17) (17) of the U-shaped mounting part (10)
Side plate (7) of heat exchanger body side plate (6)
(7) Placed in a state of being superimposed on the outer surface, and threaded holes (14) (13) in each side plate (17) (7) (7) (17)
(13) Make (15) match each other. As a result, the spacing member (19) is disposed in a protruding state so as to fit between the side plates (7) and (7) of the side plate (6).

In this state, the screw (8) is passed through the screw holes (14), (13), (13), and (15) from the side, and the side plates (17), (7), (7), (17) are inserted. I like a bridge
Tighten to the specified torque. In this tightening process, the side plates (17), (7), (7), and (17) tend to be deformed inward, but the spacing piece (19) acts to prevent the deformation from the inside. Therefore, the side plate portions (17), (7), (7)
Screw (8) without deforming (17) inward
Can be tightened to a specified torque, and a bracket mounting state excellent in mounting strength and appearance can be obtained.

In the above-described embodiment, the structure is shown in which the bracket (9) is attached later to the heat exchanger body (4) integrated with brazing. In addition, an aluminum bracket is used. In a heat exchanger of a specification in which the bracket is assembled to the heat exchanger body in a temporarily assembled state before the batch brazing and the bracket is collectively brazed to the heat exchanger body together with the batch brazing of the heat exchanger body, It goes without saying that the present invention is also applicable to a temporary fixing structure for temporarily fixing the heat exchanger body in a temporarily assembled state with a fastening member such as a screw.

[0021]

As described above, the heat exchanger of the present invention has the following features.
The bracket has a U-shaped mounting portion provided with a spacing member that is located near the fastening member through-hole and protrudes between the side plate portions on the heat exchanger body side to maintain a space between the respective side plate portions. Therefore, during the mounting of the bracket, if the side plate portions on the heat exchanger body side and the bracket side try to deform inward with the progress of the tightening by the fastening member, the space holding piece will deform the deformation from the inside. It acts to prevent this, so that the bracket can be fastened to the heat exchanger body in a defined tightened state without deforming each side plate.

Further, since the spacing member is provided on the bracket side, the design change of the structure of the heat exchanger main body side due to the change of the mounting mode of the bracket can be reduced. In addition, it is possible to easily and easily provide the spacing member only at a necessary portion to avoid complication of the heat exchanger structure and eliminate waste in the structure. In addition, the bracket has a length corresponding to the length of the side plate.
Is it composed of a single member with a corresponding length
The bracket for attaching the heat exchanger to the vehicle body, etc.
Mounting can be done with only one bracket.
The number of fastening members such as mounting screws
Fewer parts, reducing the required number of parts and simplifying the structure
It can measure. In addition, the bracket
Single bracket for sufficient mounting strength
To the vehicle body,
The heat exchanger can be installed in a stable and good condition.
You. In addition, the outside of the bracket
It is provided with a pair of mounting insertion pins in a protruding shape.
Are installed, so that multiple
Compared to the case where each bracket is separately attached to the side plate
Be sure to correctly and accurately set the distance between the insertion pins.
It is easy to install the heat exchanger on the vehicle body side
Can always be performed accurately and without trouble.
Wear.

[Brief description of the drawings]

FIG. 1 is a cross-sectional perspective view showing one embodiment, showing a bracket and a heat exchanger main body in a separated state.

2A and 2B show a mounting state of the bracket and the heat exchanger body according to the embodiment, wherein FIG. 2A is a front view, and FIG. 2B is a sectional view taken along the line II-II in FIG. , Figure (c)
Is a bottom view.

FIG. 3 shows the overall configuration of the heat exchanger according to the embodiment, wherein FIG. 3 (a) is a front view and FIG. 3 (b) is a bottom view.

4 (a) is a front view of a lower half of the heat exchanger, and FIG. 4 (b) is a side view showing a mounting structure of a heat exchanger body and a bracket, and FIG. FIG. 4 is a side view showing a deformed state caused by screw tightening.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 4 ... Heat exchanger main body 6 ... Side plate 7 ... Side plate part 8 ... Screw (fastening member) 9 ... Bracket 10 ... U-shaped mounting part 13, 14, 15 ... Screw through hole 17 ... Side plate part 19 ... Space holding piece

Claims (1)

(57) [Claims] 1. A side panel having a U-shaped cross section that opens outward.
On the side plate of the heat exchanger body having a rate,
A U-shaped bracket for a bracket having a U-shaped cross section
The attachment portions are fitted into the outer fitting state from the opening side, and
Each side plate part on the side plate side that has been made into a joint shape
And the corresponding position of each side plate of the U-shaped mounting part on the bracket side
Fastening with screws etc. through the fastening member through hole opened in
The members are bridged between the side plates and fastened
The bracket was attached to the side plate
In the heat exchanger, the bracket substantially corresponds to the length of the side plate.
It is composed of a single member having a length, and at both ends of the bracket, at a predetermined distance from each other
When a pair of mounting insertion pins are provided
In the U-shaped mounting portion of the bracket, a spacing holding piece that is located near the fastening member through-hole and protrudes between the side plate portions on the heat exchanger body side and that maintains the spacing between the side plate portions is provided. A heat exchanger.