JPH08619Y2 - Heat exchanger - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a heat exchanger used as a condenser, a radiator or the like of a vehicle cooling device.

(Prior Art) Conventionally, for example, Japanese Utility Model Laid-Open No. 63-173689 is known as a disclosure of this type of heat exchanger.

This heat exchanger includes a header pipe constructed by joining a plurality of short pipes with a joint member that also serves as a partition plate, and a plurality of tubes whose both ends are connected to each header pipe in a communicating state, A plurality of header chambers mainly formed of heat transfer corrugated fins interposed between the tubes and formed in the header pipe, and a plurality of tubes communicating with the header chambers, meandering heat exchange medium passages. Is formed.

The joint member has two fitting portions that match the inner shape of the short pipes that form the header pipe, and the fitting portions are fitted into the respective openings of the short pipes. Have been spliced.

Further, this type of heat exchanger is installed in a vehicle or the like through a bracket for mounting a heat exchanger body mounted on a header pipe.

(Problems to be solved by the invention) In a conventional heat exchanger, a plurality of short pipes are joined by a joint member to form a header pipe. Because of the protrusion, the length of the fitting portion of the joint member is limited, and there is some concern about the strength of the joint portion.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a heat exchanger that can more firmly join each short pipe.

(Means for Solving the Problems) In order to achieve the above-mentioned object, the present invention provides a plurality of short pipes and fitting portions which can be fitted to the short pipes on both sides of a non-fitting portion. A pair of header pipes each having a joint member provided and joined by fitting a fitting portion of the joint member to each short pipe, and a plurality of end pipes connected in a communicating state between the header pipes. In a heat exchanger including a book tube and fins for heat transfer interposed between the tubes, a bracket for mounting a heat exchanger body is attached to the joint member. Further, the bracket has a holding portion that holds at least a part of the outer peripheral surface of the joint portion of each short pipe. Further, in claim (2), the joint member according to claim (1). Is configured so that the length of the non-fitting portion can be adjusted in the axial direction of the header pipe.

(Operation) In the heat exchanger according to claim (1), since the fitting portion of the joint member and the holding portion of the bracket attached to the joint member hold at least a part of the joint portion of each short pipe. , The joint is made stronger.

Further, in claim (2), since the joint member is configured such that the length of the non-fitting portion is adjustable in the axial direction of the header pipe, the position of the connection hole of the header pipe can be corrected.

(Embodiment) FIGS. 1 to 3 show an embodiment of the present invention.
1 is a partially exploded view of the heat exchanger, FIG. 2 is a partially enlarged view thereof, and FIG. 3 is an overall perspective view thereof.

In the figure, reference numeral 1 denotes a pair of header pipes arranged at a predetermined interval, and these header pipes join two short pipes 1a and 1b having different lengths and short pipes 1a and 1b, respectively. The joint member 4 and the opening portions at both ends thereof are sealed by the lid 1c. Further, a plurality of laterally long connecting holes 1d matching the outer shape of the flat tube 2 are provided on the side surface of each header pipe 1 along the axial direction of the header pipe 1 at predetermined intervals. Further, at the upper part of one header pipe (left side in FIG. 3) 1, a heat exchange medium inlet 1e is provided.
However, the other header pipe (right side in FIG. 3) 1
The outlets 1f are provided in the lower part of each.

Reference numeral 2 denotes a plurality of heat exchange medium distribution tubes, which are uniformly flat straight tubes. Further, both ends of the tube 2 are inserted into the connection holes 1d of the header pipes 1 and fixed by brazing or the like.

Reference numeral 3 is a heat transfer corrugated fin made of a corrugated plate, which is interposed between the tubes 2 in contact with the tubes 2,
It is fixed by brazing.

Reference numeral 4 is a joint member for joining the short pipes 1a and 1b. The joint member 4 can be forcibly fitted into each of the short pipes 1a and 1b, respectively.
Two fitting portions 4a, 4b are provided on both sides of the central portion of a non-fitting portion 4c having an outer diameter that matches the outer diameter of each short pipe 1a, 1b. In addition, a screw hole 4d for screwing the bracket 5 to the non-fitting portion 4c
Is provided. The joint member 4 also has a function as a partition plate that divides the inside of the header pipe 1 into two upper and lower header chambers.

Reference numeral 5 is a bracket for attaching the heat exchanger body to a vehicle or the like. The bracket 5 has a holding portion 5a having a semicircular cross section which is sufficiently longer in the axial direction of the header pipe 1 than the thickness of the non-fitting portion 4c of the joint member 4 and which is in surface contact with the outer peripheral surface of the header pipe 1. And a notch 5b into which a bolt or the like for mounting the heat exchanger body can be inserted. The bracket 5 is fixed to the joint member 4 with screws 6.

The heat exchanger configured as described above forms a meandering heat exchange medium passage by the upper and lower two header chambers formed in the header pipe 1 and the plurality of tubes 2 communicating these. The heat exchange medium flowing into the heat exchanger is heat-exchanged with air or the like via the corrugated fins 3 while moving in the heat exchange medium passage.

As described above, according to the heat exchanger of this embodiment, when the short pipes 1a and 1b are joined by the joint member 4, the fitting portions 4a and 4b of the joint member 4 are respectively connected to the short pipes 1a and 1b. When fitted,
The holding portion 5a of the bracket 5 provided on the joint member 4 holds a part of the outer peripheral surface of the joint portion of both the short pipes 1a and 1b, whereby the joint portion of the short pipes 1a and 1b is fitted. Since it is sandwiched between the inner and outer surfaces by the portion 4a and the holding portion 5a, the strength of the joint portion can be increased and the joint portion can be reliably held in the upright state.

In addition, when assembling, the displacement of the insertion position of the tube 2 and the connection hole 1d caused by the dimensional error or the like can be corrected by adjusting the fitting amount of the header pipe 1 and the joint member 4, and thereby the accuracy can be improved. Assembling can be done,
There is also an advantage that it is possible to prevent generation of defective products due to dimensional errors.

FIG. 4 shows another embodiment of the joint member. The joint member 24 having the same outer shape as that of the above-mentioned embodiment is provided with an upper fitting portion 24a, a non-fitting portion 24b integral therewith, and a lower fitting portion. It is divided into a portion 24c and a non-fitting portion 24d integral with the portion 24c, and a male screw portion 24e and a female screw portion 24f which are screwed to each other are provided, and these are screwed together. Other configurations are the same as those in the above-mentioned embodiment.

As shown in FIG. 5, this joint member 24 has a male screw portion 24e when one fitting portion 24a or 24c is rotated in the A direction.
Also, since the length in the B direction, that is, the axial length between the non-fitting portions 24d, 24d can be adjusted by moving the female screw portion 24f forward and backward, it is possible to easily correct the deviation of the insertion position between the tube 2 and the connection hole 1b. Moreover, since the fitting can be completed without the need for adjusting the fitting amount as in the above-described embodiment, a better fitting state can be obtained.

In the above embodiment, one joint member 4 is provided for each header pipe 1, but two or more joint members 4 may be provided, depending on the scale of the heat exchanger.

(Effects of the Invention) As described above, according to the heat exchanger of claim 1, when the short pipes are joined by the joint members, the fitting portions of the joint members are fitted to the short pipes. At the same time, the holding portion of the bracket provided on the joint member holds at least a part of the outer peripheral surface of the joint portion of both short pipes, and the joint portion is joined from the inner and outer surfaces by the fitting portion and the holding portion. Since it is sandwiched, the strength of the joint can be increased.

Further, according to the heat exchanger of claim (2), since the length of the non-fitting portion of the joint member is adjustable in the axial direction of the header pipe, in addition to the effect of claim (1). hand,
A deviation in the insertion position between the tube and the connection hole caused by a dimensional error or the like during assembly can be easily corrected by adjusting the length of the non-fitting portion of the joint member. Moreover, since it is not necessary to adjust the amount of fitting of the fitting portion, and the fitting can be completed completely, a better fitting state can be obtained.

[Brief description of drawings]

1 to 3 show one embodiment of the present invention. FIG. 1 is a partially exploded view of a heat exchanger, and FIG. 2 is an enlarged view of the same.
FIG. 3 is an overall perspective view of the same, FIGS. 4 and 5 show another embodiment of the joint member, FIG. 4 is a longitudinal sectional view of the joint member, and FIG. It is a perspective view shown. In the figure, 1 ... Header pipe, 1a, 1b ... Short pipe, 2 ...
Tube, 3 ... Corrugated fin, 4 ... Joint member,
4a, 4b, 24a, 24c …… Mating part, 4c, 24b, 24d …… Non-fitting part,
5 ... Bracket, 5a ... Holding part.

Claims (2)

[Scope of utility model registration request] 1. A joint member having a plurality of short pipes and fitting portions capable of fitting to the short pipes provided on both sides of a non-fitting portion, and the fitting portion of the joint member is fitted to each short pipe. A pair of header pipes joined together by means of a plurality of tubes, both ends of which are connected in a communicating state between the header pipes, and heat transfer fins interposed between the tubes. In the heat exchanger consisting of, a bracket for mounting the heat exchanger body is attached to the joint member, and the bracket has a holding portion that holds at least a part of the outer peripheral surface of the joint portion of each short pipe. A heat exchanger characterized by being present. 2. The heat exchanger according to claim 1, wherein the joint member is configured such that the length of the non-fitting portion is adjustable in the axial direction of the header pipe.