JPH0596785U - Heat exchanger - Google Patents

Abstract

(57) [Summary] (Corrected) [Purpose] Even in an installation space that is restricted by the corners, the front area of the heat exchanger is not reduced, and the intake of cooling air is ensured. [Structure] A plurality of tubes 2 and fins 3 are alternately laminated, and a side plate 9 is disposed on the outermost side of the tubes.
In the parallel flow type heat exchanger in which the header tanks 4 are provided at both ends of the tube and the end openings of the header tanks are closed by the blind caps 5, the blind caps 5 are provided with plate insertion holes, and end portions of the side plates are provided therewith. Part and insert the side plate. Further, a bush is provided on the blind cap, and the side plate is attached by engaging an engaging hole provided at an end of the side plate with the bush.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a parallel flow type heat exchanger that can be reliably installed even when it is installed in a vehicle, even if there are restrictions at the corners of the installation space.

[0002]

[Prior Art]

 In the parallel flow type heat exchanger, a plurality of tubes and fins are alternately laminated, and header tanks are connected in communication with both ends of the laminated tubes to form a square front shape. In addition, the upper and lower openings of each header tank are closed by blind caps, and partition plates are installed at the required locations in each header tank, and between the inlet joint and outlet joint provided in the header tank. The heat exchange medium is meandered several times to flow.

As a space for installing a heat exchanger such as a condenser in a vehicle, an installation space is often provided on a reinforcing member of a vehicle body. In many cases, the lower corners of this installation space are formed diagonally due to, for example, the effects of headlights. When a rectangular heat exchanger is installed on the reinforcing member, the four corners of the heat exchanger hit the corners of the reinforcing member, so it is unavoidable to use a small heat exchanger. In other words, since it is not possible to use a large heat exchanger that can fully utilize the installation space where the lower corners are inclined, there was a problem that only a heat exchanger with a reduced front area and reduced performance could be installed. .. Furthermore, when a heat exchanger with a small front surface area is used, the gap between the outer peripheral edge of the installed heat exchanger and the inner peripheral edge of the reinforcing member increases, and the cooling air taken in from the front side is increased. Since the amount that escapes from the gap also increases, there was a problem that the cooling effect of the heat exchanger declined.

Therefore, conventionally, by forming the lower end of the header tank diagonally corresponding to the lower corner of the installation space and closing the diagonal opening with a lid having a corresponding shape, In order to prevent the deterioration of the performance of the heat exchanger and the intake of cooling air to prevent the deterioration of cooling, there have been devised measures (for example, Japanese Utility Model Laid-Open No. 3-46759 and Japanese Patent Laid-Open No. 4-52471).

[0005]

[Problems to be solved by the device]

 However, according to the prior art described in the above publication, the end portion of the header tank has to be formed obliquely, and the lid plate that closes the oblique opening is also formed in a special shape suitable for this opening. Therefore, there is a problem that the manufacturing is difficult and the cost is high. Further, since the oblique opening is closed by the cover plate, the heat exchange medium is likely to leak.

Therefore, the present invention focuses on the fact that even if the corner of the installation space is restricted, it can be basically coped with by shortening the length of the header tank, and it is easy to manufacture and the heat exchange medium may leak. It is an object of the present invention to provide a heat exchanger capable of preventing a decrease in cooling efficiency without reducing the front area of the heat exchanger.

[0007]

[Means for Solving the Problems]

 In the heat exchanger according to the first aspect, a plurality of tubes and fins are alternately laminated, a side plate is disposed on the outermost side of these laminated tubes, and a header tank is connected to both ends of each tube. A parallel flow type heat exchanger that is connected and has an end opening of the header tank closed by a blind cap, wherein a side plate insertion hole is formed in the blind cap, and an end of the side plate is It is a heat exchanger inserted in the insertion hole.

In the heat exchanger according to the second aspect, a plurality of tubes and fins are alternately laminated, side plates are disposed on the outermost sides of these laminated tubes, and headers are provided at both ends of each tube. A parallel flow type heat exchanger in which the tanks are connected for communication and the end opening of the header tank is closed by a blind cap, wherein the blind cap is provided with a bush protruding outward in the axial direction, and This is a heat exchanger in which an engaging hole is provided at an end and the engaging hole is engaged with the bush.

[0009]

[Action]

 In the device according to the first aspect, since the side plate is attached to the blind cap, the length of the header tank is shorter than that in the conventional case where the side plate is attached to the header tank. This makes it possible to sufficiently install the heat exchanger of the present invention even if there is a restriction in the corner of the installation space, and as a result, the front area of the heat exchanger is not reduced and the heat The gap between the exchanger and the installation space does not become large, the amount of cooling air taken in increases, and the cooling capacity can be exhibited. Further, since the volume of the header tank is reduced, the heat exchange medium amount is also reduced. Furthermore, especially in the blind cap on the lower end side of the header tank, since the internal volume between the tube at the lowermost end and the bottom of the blind cap becomes small, the amount of oil accumulated from the heat exchange medium is accumulated. Can be reduced. Moreover, the blind cap can be fixed by the side plate when the heat exchanger is assembled, which facilitates the assembly.

In the heat exchanger according to the second aspect, since the side plate is attached to the blind cap by engaging the engagement hole at the end of the side plate with the bush, the same as the invention of the first aspect. In addition, the header tank is significantly shortened, and the same effect can be obtained. In this case, since the plate insertion hole is unnecessary, the manufacturing process becomes easy.

[0011]

【Example】

 A first embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows a front view of a heat exchanger 1 of the present embodiment. In this heat exchanger 1, a plurality of flat tubes 2 and wavy fins 3 are alternately laminated, and both ends of the laminated flat tubes 2 are stacked. The header tanks 4 are connected to each other.

In the present embodiment, the header tank 4 is formed of a circular pipe, and the upper and lower openings of each header tank 4 are closed by blind caps 5. An inlet joint 6 is connected to one of the header tanks 4 and an outlet joint 7 is connected to the other of the header tanks 4. Then, the heat exchange medium is meandered a plurality of times between the inlet joint 6 and the outlet joint 9 by the partition plates 8 provided at required positions in both header tanks 4. Further, side plates 9 having a U-shaped cross section are disposed on the upper end side and the lower end side of the laminated flat tubes 2. In the figure, 10 indicates a reinforcing member of the vehicle.

More specifically, as shown in FIGS. 2 to 4, the flat tube 2 is inserted into a tube insertion hole 4 a provided in the header tank 4 and joined by integral brazing. Further, the side plate 9 is joined by integral brazing while being inserted into the plate insertion hole 5a provided in the blind cap 5. Further, in order to make the axial length of the header tank 4 as short as possible, a cutout portion 4b that fits into the tip portion of the side plate 9 inserted into the blind cap 5 is provided at the end portion of the header tank 4. .. Then, as shown in FIG. 4, the end of the side plate 9 is inserted into the plate insertion hole 5a of the blind cap 5, and the end of the side plate 9 is fitted into the notch 4b. It is fitted into the end opening of the and is joined by integral brazing.

Therefore, the side plate is conventionally attached to the header tank, whereas the side plate is attached to the blind cap, so that the axial length of the header tank can be shortened, and therefore the capacity in the header tank is reduced. And the amount of heat exchange medium can be reduced. Further, in particular, in the lower end portion of the header tank, the internal volume between the flat tube at the lowermost end and the bottom portion of the blind cap also becomes small, so that the amount of oil accumulated from the heat exchange medium can be reduced. Furthermore, since the amount of downward protrusion of the lower end of the header tank can be made small, especially when the heat exchanger is installed in the installation space on the reinforcing member with the corner formed obliquely, The perimeter of the heat exchanger can be adapted to the shape of the corners of the member. As a result, since the front shape of the heat exchanger is not reduced, the performance does not deteriorate, and the cooling air can be taken in reliably, so that the original heat exchange capacity can be exhibited. ..

Next, a second embodiment of the present invention will be described. As shown in FIG. 5 and FIG. 7, the heat exchanger of this embodiment is provided with an auxiliary plate 11 and a side plate 9 below the flat tube 2 at the lowermost end, and both of them are arranged. The end portions 11A and 9A of the plates 11 and 9 are fitted to each other, and the both end portions 11A and 9A are inserted into the plate insertion hole 5a provided in the blind cap 5 and joined together. The corrugated fins 3 are also arranged between the side plates 11 and the side plates 9.

The auxiliary plate 11 is formed flat up to the end portion 11A, and the side plate 9 is bent upward before the end portion 9A and then bent in the horizontal direction. Then, as shown in FIG. 6, the end portion 11A of the auxiliary plate 11 and the end portion 9A of the side plate 9 are formed in a shape that can be fitted to each other, and as shown in FIG. 7, the end portion 11A of the auxiliary plate 11 is formed. Is configured to be fitted on the same plane in the end portion 9A of the side plate 9. Incidentally, the fitting shape of both ends 11A and 9A is not limited to this.

Therefore, according to the present embodiment, the same effect as that of the first embodiment is obtained, and since the corrugated fins are provided between the auxiliary plate and the side plate, the heat dissipation effect of the heat exchanger is improved. As the height increases, the gap between the lower side of the heat exchanger and the reinforcing member can be reduced, which enables more reliable intake of cooling air.

Next, a third embodiment of the present invention will be described. In the heat exchanger of this embodiment, as shown in FIGS. 8 and 9, the shape of the blind cap 5 to which the side plate 9 is attached is such that the bottom corresponds to the diagonal corner of the reinforcing member 10 when viewed from the front. The bent piece 9a of the side plate 9 is also formed wide along the lowermost end of the blind cap 5. The blind cap 5 can be easily manufactured by pressing.

Therefore, the peripheral edge of the heat exchanger can be more surely provided along the peripheral edge of the lower part to the peripheral edge of the lower part, the intake of cooling air is ensured, and the efficiency of the heat exchanger is reduced. Can be prevented.

Next, a fourth embodiment of the present invention will be described. As shown in FIGS. 10 and 12, the heat exchanger of this embodiment is provided with a bush 14 made of aluminum outside the axis of the blind cap 5, and the bush 14 is provided at the end of the side plate 9. The engaging plate 9B is inserted so that the side plate 9 is supported by the aluminum bush 14.

The aluminum bush 14 is formed of a solid shaft portion 15 and a disc portion 16 integrally provided at the base end of the shaft portion 15. Then, as shown in FIG. 11, the shaft portion 15 is inserted from the blind cap 5 into the insertion hole 5c provided in the central portion of the blind cap 5, and the shaft portion 15 is integrally projected with the shaft portion 15 protruding outward. The aluminum bush 14 is fixed to the blind cap 5 by brazing. Further, the shaft portion 15 is provided with a bulging portion 17 that bulges slightly annularly at a position separated from the disc portion 16 by a dimension equivalent to the plate thickness of the blind cap 5. The aluminum bush 14 is temporarily fixed to the blind cap 5 by 17.

On the other hand, the side plate 9 attached to the aluminum bush 14 bends downward in the vicinity of the end and then bends in the horizontal direction, and an engaging hole 9B into which the bush bulge 17 can be inserted at the tip. Are formed. Then, as shown in FIG. 12, it is attached by inserting the shaft portion 15 of the aluminum bush 14 into the engaging hole 9B at the end portion of the side plate 9, and when assembled, it is moved up and down (or left and right) by a jig. Since the side plates 9 of 9 are gripped, the blind cap 5 is temporarily fixed by the side plate 9. Further, when the heat exchanger is installed, the shaft portion 15 of the aluminum bush 14 is attached to the hole portion 10a of the reinforcing member 10 via the rubber bush 18.

A corrugated fin 3 is interposed between the side plate 9 and the flat tube 2 at the outer end adjacent to the side plate 9. As shown in FIG. 12, the flat tube 2 at the outer end is inserted into the tube insertion hole 4a of the header tank 4, and the cutout portion 5b in which the portion that interferes with the flat tube 2 at the outer end is cut out is blind. It is provided on the cap 5.

Therefore, according to the present embodiment, the blind cap is provided with the aluminum bush, and the side plate is attached to the aluminum bush. Therefore, the axial length of the header tank can be significantly shortened, and the heat can be reduced. Even if the installation space is restricted in the corners of the exchanger, the front area of the heat exchanger is not reduced and the intake cooling air volume is not reduced. Further, by providing the blind cap with a notch portion for preventing interference with the flat tube, it is possible to further shorten the header tank.

In each of the above-described embodiments, the case where a circular pipe is used for the header tank has been described as an example, but a header of a two-division type divided into an end plate and a tank plate in the radial direction. The same can be applied to the tank.

[0026]

[Effect of the device]

 As described above, according to the present invention, a plate insertion hole is formed in a blind cap and an end portion of a side plate is inserted into the insertion hole, or a blind cap is provided with a bush and the side plate is attached to the bush. Since the side plates are attached by engaging the engaging holes provided at the ends, the length of the header tank can be shortened. As a result, even when the heat exchanger is installed in the installation space where the corner is restricted, it can be installed without reducing the frontal area, and as a result, the intake of cooling air can be ensured. Further, since it is not necessary to make the end portion of the header tank slanted as in the conventional case, the processing becomes easy and there is no fear of leakage of the heat exchange medium. In addition, the volume of the header tank is reduced, so that the amount of heat exchange medium can be reduced, especially in the blind cap on the lower end side of the header tank, the volume between the lowermost tube and the bottom of the blind cap is small. Therefore, it is possible to reduce the amount of oil accumulated from the heat exchange medium. Furthermore, since the blind cap can be held by the side plate when the heat exchanger is assembled, the assembly becomes easy.

[Brief description of drawings]

FIG. 1 is a front view of a heat exchanger according to a first embodiment of the present invention.

FIG. 2 is an enlarged front view of a main part of the heat exchanger.

FIG. 3 is a vertical sectional view of a main part.

FIG. 4 is an exploded perspective view of a main part.

FIG. 5 is a front view of the essential parts of the heat exchanger according to the second embodiment of the present invention.

FIG. 6 is an exploded perspective view showing ends of an auxiliary plate and a side plate.

FIG. 7 is a perspective view of an engaged end portion of an auxiliary plate and a side plate.

FIG. 8 is a front view of the essential parts of the heat exchanger according to the third embodiment of the present invention.

FIG. 9 is a vertical sectional view of a main part.

FIG. 10 is a perspective view of an essential part of a heat exchanger according to a fourth embodiment of the present invention.

FIG. 11 is a vertical sectional view of a blind cap to which a bush is attached.

FIG. 12 is a vertical cross-sectional view showing a mounted state on the vehicle body side.

[Explanation of symbols]

 1 Heat Exchanger 2 Tube 3 Fin 4 Header Tank 5 Blind Cap 5a Plate Insertion Hole 9 Side Plate 9B Engagement Hole 14 Bush

Claims (2)

[Scope of utility model registration request] 1. A plurality of tubes and fins are alternately laminated, a side plate is disposed on the outermost side of these laminated tubes, and a header tank is communicatively connected to both ends of each tube. In a parallel flow type heat exchanger in which a part opening is closed by a blind cap, a side plate insertion hole is formed in the blind cap, and an end of the side plate is inserted into the insertion hole. Heat exchanger. 2. A plurality of tubes and fins are alternately laminated, a side plate is disposed on the outermost side of these laminated tubes, and a header tank is connected to both ends of each tube so as to communicate with each other. In a parallel flow type heat exchanger whose opening is closed by a blind cap, a bush protruding outward in the axial direction is provided in the blind cap, and an engaging hole is provided at an end of the side plate. A heat exchanger characterized in that a hole is engaged with the bush.