JP2911243B2 - 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, for example, a condenser or an evaporator for a car cooler.

[0002]

2. Description of the Related Art A so-called serpentine type heat exchanger in which a porous flat extruded tube called a harmonica tube is bent in a meandering shape and fins are arranged between parallel portions thereof to constitute a core portion. Instead, a so-called header type heat exchanger in which a plurality of flat tubes and corrugated fins are alternately stacked and both ends of each tube are connected to each other by a hollow header is provided, and has been spotlighted.

By the way, when this type of heat exchanger is mounted on a vehicle body or the like, mounting brackets are fixed to upper and lower side edges of a core portion composed of tubes and fins, or mounting brackets are fixed to a header. , Through which it is mounted.

[0004]

However, in the case where such a bracket is mounted, not only the number of parts is increased and the weight is increased, but also the bulky state in which the bracket and the like protrude from the heat exchanger body. Therefore, it is troublesome to transport and store the vehicle until it is mounted on the mounting side of the vehicle body or the like. In addition, in such a bulky state, there is a case where a bracket or the like hinders the work when mounting in a place where the mounting space is narrow, and the work becomes difficult.

Further, this type of heat exchanger is manufactured by bringing each constituent member into a temporarily assembled state, carrying it into a furnace, and brazing all together. However, the production cost is high and the production cost is high.

The present invention has been made in view of the above-mentioned problems, and has been made so that it can be easily mounted on a vehicle body or the like while maintaining a reduction in the total weight, without increasing the manufacturing cost. It is an object to provide a heat exchanger.

[0007]

In the heat exchanger according to the present invention, instead of the lid attached to the end of the header, a pipe joint half is attached, and this is used to attach to the attachment side. The fitting can be mounted on the mounting side by fitting to the corresponding half of the fitting.

That is, the present invention provides a heat exchanger in which a plurality of flat tubes are arranged in parallel, fins are arranged between adjacent tubes, and both ends of each tube are connected to a pair of hollow headers. A pipe joint half is attached to each end of each of the headers, and each of the pipe joint halves is fitted to a corresponding pipe joint half attached at a corresponding position on the mounting side. And a heat exchanger characterized in that the heat exchanger can be mounted on the mounting side.

For the purpose of facilitating attachment to the attachment side, it is desirable to adopt a pipe joint having a structure that can be fitted with a so-called one-touch operation.

[0010]

Since each header is provided with a pipe joint half, the heat exchanger is mounted on the mounting side via a bracket by fitting this to a corresponding pipe joint half mounted on the mounting side of a vehicle body or the like. Can be installed directly without using

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below based on an embodiment applied to an aluminum heat exchanger for a condenser.

In this specification, the term aluminum is used to include an aluminum alloy.

In FIGS. 1 to 6, (1) is a plurality of flat tubes for flowing refrigerant arranged in a vertical state in a horizontal state, and (2) is interposed between adjacent tubes (1) and (1). It is a corrugated heat radiation fin. For the tube (1), a porous extrusion material such as a so-called harmonica tube is suitably used. Of course, an electric resistance welded tube may be used without depending on the extruded material, but in this case, it is desirable to provide a reinforcing wall along the longitudinal direction in order to increase the pressure resistance.

The corrugated fin (2) is a tube (1)
And has the same width as that of, and is joined to the tube (1) by brazing. As the corrugated fin (2), it is desirable to use a corrugated fin obtained by cutting and raising a louver.

(3) and (4) are left and right hollow headers each having a circular cross section. As shown in FIG. 4, a single-sided or double-sided brazing sheet is formed in a cylindrical shape such that both side edges thereof are in abutting shape. And a hollow molded pipe formed by brazing the side edges. A plurality of tube insertion slits (3a) are arranged in a row at a plurality of upper and lower stages on opposing inner side surfaces of both headers (3) and (4), and each slit (3a) has an end portion of the tube (1). Are inserted and brazed. Thus, the tube group constitutes a refrigerant flow passage that connects and connects the headers (3) and (4) to each other.

As shown in FIG. 1, the right header (4)
The inside of the left header (3) is divided into two parts in the longitudinal direction by the partition plate (5), while the inside of the left header (3) is divided into three parts by the partition plate (5). The heat exchange medium that has flowed in is circulated in a meandering manner and flows out from the lower end of the header (4). The meandering refrigerant circuit is set such that the upper passage has a substantially larger passage cross-sectional area in accordance with a change in volume of the heat exchange medium.

At the upper and lower ends of the headers (3) and (4), male-side pipe joint halves (6) having the same shape are fitted with the respective base ends (6a) in an externally fitted state. It is integrated by brazing. The male side pipe joint half (6)
Particularly, as shown in FIG. 4, the base end (6a) is the header (3).
And has a small-diameter fitting portion (6b) continuous with the end portion. The fitting portion (6b) has an annular groove (6c) formed at an intermediate portion in the height direction, and the distal end (6d) has a reduced diameter.

Each of these male pipe joint halves (6) functions as a locking member when mounted on the mounting side (A) of a vehicle body or the like, and includes both upper and lower ends of the right header (4). The male-side pipe joint half (6) performs the function of the entrance and exit of the heat exchange medium in addition to the locking function.

Each male fitting half (6) attached to the header (3) (4) as described above is fitted to the corresponding female fitting half (7) (8). It is. As shown in FIG. 1, the female-side pipe joint halves (7) and (8) are mounted at positions corresponding to the mounting side (A) of a vehicle body or the like.

The female joint half (7) fitted to the male joint half (6) attached to the upper and lower ends of the right header (4), as shown in FIG. The fitting part (6b) of the pipe joint half (6) has a fitting part (7a) that fits tightly and in a liquid-tight state, and a connecting part (7b) extending therefrom,
The inlet pipe (P1) or the outlet pipe (P2) is connected to the connecting portion (7b).

On the other hand, as shown in FIG. 6, the female joint half (8) fitted to the male joint half (6) attached to the upper and lower ends of the left header (3) is a male connector. The fitting portion (6b) of the side pipe joint half (6) fits tightly, and the fitting portion (8a) that fits in a liquid-tight state and the end wall (8) that closes one end of the fitting portion (8a).
It is a cap having b).

Each of the male-side pipe joint halves (6) is firmly fitted to the corresponding female-side pipe joint halves (7), (8) in a liquid-tight state by a one-touch operation simply by being inserted therein. Things.

In the figure, (9) is a side plate disposed outside the outermost fin (2).

The heat exchanger is carried into the furnace in a temporary assembly state in which the male joint halves (6) are attached to both ends of both the headers (3) and (4), respectively, and the components are joined together. It is manufactured by attaching.

The mounting of the heat exchanger thus manufactured on the mounting side (A) of the vehicle body or the like is completed by the following very simple operation. That is, both headers (3) and (4)
The male joint halves (6) and (6) attached to the lower end of the female joint are fitted into the female joint halves (7) and (8) attached to corresponding positions on the attachment side (A), and both headers are attached. (3)
Male fitting half (6) attached to the upper end of (4)
This is completed by fitting the female-side pipe joint halves (7) and (8) attached to the corresponding positions on the attachment side (A) to (6).

In the above embodiment, the male and female joints (6) are attached to the upper and lower ends of the left and right headers (3) and (4), respectively. The pipe joint half may be attached and fitted to the male pipe joint half mounted at the corresponding position on the mounting side.

Further, the heat exchange medium flows from the upper part of the right header (4), and flows in a meandering manner in the core portion composed of the headers (3) (4) and the tube (2). ) Is shown below, but the present invention is not limited to this. For example, the heat exchange medium may flow from the upper part of the right header (4) and flow out of the lower part of the left header (3), or the heat exchange medium may flow from the upper part of the left header (4) and Or you may make it flow out from the lower part of the left header (3) (4). Alternatively, the heat exchange medium may flow in from the lower portions of the headers (3) and (4) and flow out from the upper portions.

The pipe joint halves to be mounted on the headers (3) and (4) and the mounting side are not limited to those shown in the above embodiment, but may have any other structure. Is also good. In addition, it is desirable that the male and female pipe joint halves be of a type that can be connected to each other with one touch as shown in the embodiment, in terms of excellent workability in attachment, but in the present invention, It is not necessarily limited to such a type.

[0029]

According to the heat exchanger of the present invention, pipe joint halves are attached to both ends of both headers as described above, and these pipe joint halves are attached to corresponding positions on the mounting side. The fitting can be mounted on the mounting side by fitting to the corresponding half of the fitting, so that mounting parts such as brackets for mounting are not required, and the weight is reduced. be able to. In addition, after the heat exchanger main body is manufactured, it is not necessary to separately attach a mounting part thereto, and it is possible to carry out a batch brazing by carrying the component together with the heat exchanger main body into, for example, a furnace. Thus, the number of parts of the entire heat exchanger can be reduced,
In addition, simplification can be achieved in the assembling and manufacturing steps, and the production cost can be reduced.

Further, since the mounting parts do not protrude from the heat exchanger body as in a conventional heat exchanger having mounting parts such as brackets mounted thereon, they are mounted on the mounting side of the vehicle body or the like. It can be easily transported and stored. In addition, since the mounting operation can be performed in such a compact state, mounting in a narrow place can be easily performed.

[Brief description of the drawings]

FIG. 1 is a front view partially showing a cross section in a state where a heat exchanger is mounted on a mounting side.

FIG. 2 is a front view of the heat exchanger.

FIG. 3 is a plan view of the heat exchanger.

FIG. 4 is a perspective view showing a state where a header, a tube, a fin, a side plate, and a pipe joint half are separated.

FIG. 5 is an enlarged sectional view showing an attached state at an upper end portion of a right header.

FIG. 6 is an enlarged sectional view showing an attached state at an upper end portion of a left header.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Flat tube 2 ... Fin 3 ... Header 4 ... Header 6 ... (male side) Fitting half body 7 ... (Female side) Fitting half body 8 ... (Female side) Fitting half body A ... Mounting side

Claims (1)

(57) [Claims] 1. A plurality of flat tubes (1) are arranged in parallel, fins (2) are arranged between adjacent tubes (1), and both ends of each tube (1) are a pair of hollow headers. (3) A heat exchanger communicatively connected to (4), wherein pipe joint halves (6) are attached to both ends of the headers (3) and (4), respectively. (6) is fitted to the corresponding fitting half (7) (8) attached to the corresponding position on the mounting side (A) so that it can be mounted on the mounting side (A). Characterized heat exchanger.