JPH0624701Y2 - Heat exchanger - Google Patents

Description

TECHNICAL FIELD The present invention relates to a heat exchanger used in an evaporator or the like for a car cooler.

Conventional technology For example, a serpentine type heat exchanger used as a condenser for a car cooler, that is, a porous flat extruded tube called a harmonica tube is bent in a meandering shape, and fins are arranged between parallel portions to form a core. When the constructed heat exchanger is attached to the vehicle body of an automobile, it is generally performed as follows. That is, as shown in FIGS. 6 and 7, a channel member (100) having a U-shaped cross section is provided with rivets and bolts at both ends of a core (103) composed of a tube (101) and a corrugated fin (102). Channel member, etc.
The core is sandwiched between both side walls of (100), and the mounting bracket (104) is further fixed to this channel member by spot welding, and the other end of the mounting bracket is fixed to the main body side so that the heat exchanger is placed at a predetermined position. It is installed.

By the way, in the above-mentioned serpentine type heat exchanger, since the heat exchange medium passage is formed by one flat extruded tube, there is a drawback that a large passage cross-sectional area cannot be secured. In other words, there is provided a heat exchanger in which a plurality of flat tubes and corrugated fins are laminated in an alternating arrangement and both ends of each tube are connected to a tubular hollow header.

The problem to be solved by the invention is that, when mounting such a heat exchanger on the vehicle body or the like, using the channel member (100) as in the case of the above-mentioned serpentine type heat exchanger requires a complicated mounting work. There were drawbacks such as poor efficiency and increased weight.

This invention was made in view of such circumstances,
It is an object of the present invention to provide a heat exchanger of a type in which both ends of a tube are connected to a header, which can be easily attached to a vehicle body or the like without causing an increase in weight.

Means for Solving the Problems In order to achieve the above-mentioned object, the present invention, as shown in the drawings, has a plurality of tubes (1) and corrugated fins (2) stacked in an alternating arrangement, and each tube has The header (3) (4) of the heat exchanger body (A) formed by connecting both ends to the hollow headers (3) (4)
The main body mounting blocks (21) and (22) having the recesses (23) which fit the outer peripheral surface of the header are arranged so that the recesses (23) are fitted to the headers (3) and (4). It is characterized by being joined and integrated.

The mounting blocks (21) and (22) are integrally joined to the headers (3) and (4) by brazing, etc., and the heat exchanger body (A) directly or separately mounts these mounting blocks. It can be attached to the vehicle body by fixing it through metal fittings. This mounting is carried out, for example, by providing mounting holes in the mounting blocks (21) and (22), and inserting bolts on the vehicle body side through these holes and fixing them with nuts. By mounting via this mounting block, the channel member (100) becomes unnecessary and the mounting work becomes simple. Also header (3)
The joint between (4) and the blocks (21) and (22) is ensured in a wide range of conforming surfaces between the peripheral surface of the header and the recesses (23) of the block, and sufficient mounting strength can be obtained.

Embodiment Next, the structure of the present invention will be described based on an embodiment applied to a condenser made of aluminum or an alloy thereof for a car cooler.

In FIGS. 1 to 4, (1) is a plurality of tubes vertically arranged in a horizontal state, and (2) is a corrugated fin arranged between adjacent tubes (1) and (1). , (3) and (4) are a pair of left and right hollow headers arranged at both ends of the tube (1). The tube (1), corrugated fins (2) and header (3)
The heat exchanger body (A) is formed by (4).

The tube (1) is composed of a flat extruded shape member made of an aluminum material. The tube (1) may be of a so-called harmonica tube, which is a porous type. Further, an electric resistance welded tube may be used instead of the extruded shape member. The corrugated fin (2) has almost the same width as the tube (1) and is joined to the tube by brazing. The corrugated fins (2) are also made of aluminum, and have louvers cut and raised on the wall surface.

Each of the headers (3) and (4) is formed of one aluminum pipe member having a circular cross section. Tube insertion holes on each header at intervals along the length
(13) is bored, both ends of each tube (1) are inserted into the holes, and firmly joined and connected by brazing. The refrigerant inlet pipe (5) is connected to the upper end of the left header (3), while the outlet pipe (6) is connected to the lower end of the right header (4). Further, the lower end of the left header (3) and the upper end of the right header (4) are the lid pieces (7).
They are closed by (8). Furthermore,
A partition plate (9) that divides the header into upper and lower chambers is provided at approximately the center of the left header (3), while a partition plate (10) is also provided at a position below the center of the right header (4). The refrigerant that is provided and thus flows into the left header (3) from the refrigerant inlet pipe (5) circulates in a meandering manner over all the refrigerant passages formed by the tube group, and flows out from the refrigerant outlet pipe (6). , Heat exchange with the air flowing in the direction shown by the arrow (W) in FIG. 4 through the air flowing gap containing the corrugated fins (2) formed between the tubes (1) and (1),
It is supposed to condense. Note that (11) (1
2) are upper and lower side plates arranged outside the outermost corrugated fin (2).

Further, on each of the headers (3) and (4), a relatively large rectangular main body mounting block (21) is attached to the upper part thereof, while a relatively small rectangular main body mounting block (21) is attached to the lower part of the header. The body mounting block (22) is attached. These mounting blocks (21) and (22) are formed by cutting an aluminum extruded shape into a predetermined length, and the end portion on the header side can fit the outer peripheral surface of the header. Recesses (23) each having a cylindrical concave surface are formed. The recesses (23) are laterally fitted to the outer peripheral surfaces of the headers (3) and (4) so as to be integrally brazed to the headers (3) and (4). And upper mounting block (21)
Has two mounting holes (21
While a) and (21b) are respectively formed, one mounting hole (22a) is formed in the lower mounting block (22) so as to penetrate therethrough in the front-rear direction. These mounting holes (21a) (21b) (22a)
Is for inserting bolts and the like, but it is also recommended to form screws on the inner circumference so that the bolts and the like can be directly fixed, if necessary. Mounting block (2
1) and 22) are preferably made of the same material as the headers (3) and (4) in order to prevent corrosion due to contact between different metals.

The heat exchanger of the illustrated embodiment is manufactured as follows. That is, as shown in FIG. 3, a brazing material layer (32) is formed on the outer surface of the aluminum pipe (31) as a member for forming a header.
A tube material (33) coated with is prepared. This pipe material (33) is generally manufactured by electric brazing welding of a brazing sheet, but it may be manufactured by extrusion or another method. As the brazing material layer (32), an A-Si alloy having a Si content of about 6 to 13 wt% is generally used. Next, a tube insertion hole (13) is provided in a row along the length direction of the pipe material (33), and then the end of the tube (1) is inserted into the insertion hole. On the other hand, as the corrugated fin (2), a brazing sheet having an aluminum plate coated with a brazing filler metal layer is also prepared. The heat exchanger main body (A) is temporarily assembled by arranging it between (11) and (12). On the other hand, mounting blocks (21) (22) having a predetermined recess (23) at the end are prepared, and mounting holes (21a) (21b) (22a) are preliminarily formed in the mounting blocks, and The recesses (23) are externally fitted to predetermined positions of the headers (3) and (4), and the blocks (21) and (22) are temporarily fixed to the headers (3) and (4). The heat exchanger assembly thus manufactured is collectively brazed by vacuum brazing or the like.

To attach the heat exchanger manufactured above to the vehicle body,
For example, as shown in FIG. 5, mounting bolts (40), etc., which are fixed at desired positions on the vehicle body side, are inserted into the mounting holes (21a) (21b) (22a) and fixed with nuts (41), etc. Alternatively, it is performed by fixing the mounting bracket fixed to the block to the vehicle body side.

Effect of the Invention According to the present invention, the header of the heat exchanger body is formed by stacking a plurality of tubes and corrugated fins in an alternating arrangement and connecting both ends of each tube to a hollow header. Further, a mounting block having a concave portion that fits the outer peripheral surface of the header is integrally joined by arranging the concave portion in a fitted state in the header. Therefore, for mounting to the vehicle body, etc., the mounting block may be fixed to the vehicle body etc. directly or through a separate metal fitting,
The conventional channel member is unnecessary, and the weight can be reduced. Besides, it can simplify the installation work,
Even if the fixing position between the heat exchanger body and the vehicle body side changes due to the installation space or the like, it can be easily dealt with by simply changing the mounting position of the block to the header. Moreover, since the block is a lump and is three-dimensional as compared with the plate-shaped support metal fittings, the number of surface portions available for attachment to the vehicle body is increased, and as in the case of the plate-shaped support metal fittings, There is no restriction on mounting that you have to mount it on the vehicle body etc. using only its thickness direction, and if necessary, mounting from the direction orthogonal to the thickness direction and other directions is also possible, and the design of the mounting mode is free Sex can be increased. Further, the joint between the header and the block is ensured on a wide range of conforming surfaces of the header peripheral surface and the concave portion of the block, so that sufficient attachment strength between the heat exchanger main body and the block and hence the vehicle body can be ensured.

[Brief description of drawings]

1 to 5 show an embodiment of the present invention, and FIG. 1 is a front view showing the entire heat exchanger with a part omitted, and FIG.
The same drawing is a plan view, FIG. 3 is an exploded perspective view of the main part, FIG. 4 is a sectional view taken along line IV-IV in FIG. 1, and FIG. 5 is a sectional view taken along line VV in FIG. And FIG. 7 is for explaining the mounting structure of the conventional serpentine type heat exchanger to the vehicle body,
FIG. 6 is a front view of the entire heat exchanger, and FIG. 7 is a partial plan view of FIG. (1) …… tube, (2) …… corrugated fin,
(3) (4) …… Header, (21) (22) …… Mounting block, (23) …… Concave, A …… Heat exchanger body.

Claims (2)

[Scope of utility model registration request] 1. A plurality of tubes and corrugated fins are stacked in an alternating arrangement, and both ends of each tube are connected to a hollow header. The header of the heat exchanger body is formed on the outer periphery of the header. A heat exchanger characterized in that a main body mounting block having a concave portion that conforms to a surface is arranged in such a manner that the concave portion is fitted into a header and is joined and integrated. 2. The heat exchanger according to claim 1, wherein the mounting block is formed of extruded profile.