JPH08219662A - Heat exchanger - Google Patents

Abstract

PURPOSE: To make it possible to design a required capacity of a header tank with each core and constitute a heat exchanger with a single type of tubes and reduce the number of tubes and fins and further enhance the efficiency of heat exchange by applying a travel ing wind to each core. CONSTITUTION: There are provided a pair of header tanks 2 and 3 vertically installed and a plurality of tubes 4 laid out by a plurality of stages through fins 6 between the paired header tanks 2 and 3. A plurality of passage 29 connected to one header tank 2 and a plurality of passage connected to the other header tank 3 are formed on each tube so that they may not be communicated with each other. A heat exchange medium is placed in and removed from each core from the header tank on one side so that different heat exchange mediums may be heat-exchanged in the longitudinal direction of the tube 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION This invention is used in vehicles and the like.
The present invention relates to a heat exchanger that simultaneously heats different heat exchange media.

[0002]

2. Description of the Related Art A heat exchanger of this type is, for example, one in which a radiator and a condenser are integrated, and is known from Japanese Utility Model Publication No. 2-36772 and Japanese Utility Model Publication No. 2-28970. . Each of them has a pair of header tanks arranged at a predetermined interval, and a large number of tubes for communicating one header tank and the other header tank are laminated with fins, and the header tank is partitioned at a predetermined position. Each header tank is divided into two parts in the longitudinal direction, and the radiator core is formed on one side of the header tank partition and the capacitor core part is formed on the other side. Is.

[0003]

However, in the above-mentioned structure, since the common header tank is divided in the longitudinal direction and assigned to different core portions, there is a difference in required tank capacity such as a radiator and a condenser. If there is, it is impossible to design, because the conditions such as withstand voltage are different between the radiator tube and the condenser tube.
It is necessary to prepare separate parts in advance and join them to the header tank.When stacking the radiator and capacitor core parts in the stacking direction of the header tank as described above, the header tank is usually used. However, because of the vehicle structure, radiator capacitors are long in the horizontal direction and short in the vertical direction.
The header tank must be long in general, the number of tube stacks will increase accordingly, and separate fins are required on the radiator side and the condenser side. For the above reason, when the header tank is installed vertically, the radiator and the condenser are divided into upper and lower parts in the above-mentioned heat exchanger, but the wind received when the vehicle is running is disclosed in Japanese Utility Model Publication No. 62-1771.
As described in Japanese Utility Model Publication No. 1-1714, Japanese Utility Model Publication No. 4-2380, etc., since there is variation in the height direction, it is difficult for wind to hit any of the core portions in the above-described configuration, and heat is generated. There are inconveniences such as poor exchange efficiency.

Therefore, in the present invention, it is possible to easily design a header tank having a required capacity in each core portion, to construct the header tank with one type of tube, and to reduce the number of tubes and fins. Further, when the header tank is vertically mounted on the vehicle, traveling air can be applied to both core parts, and thus it is an object to provide a heat exchanger capable of improving heat exchange efficiency. There is.

[0005]

The laminated heat exchanger according to the present invention is provided with a pair of vertically arranged header tanks, and is connected to a passage connected to one header tank and the other header tank. A plurality of tubes formed so as not to communicate with each other through a plurality of tubes are stacked between the pair of header tanks via fins, and heat exchange media different in the longitudinal direction of the tubes can exchange heat with external air. This is done (claim 1).

As a more specific configuration example, the inside of the header tank is divided into an inlet side and an outlet side by a partition plate extending in the stacking direction of the tubes, and the tube is provided with an inlet side and an outlet side of one of the header tanks. It is conceivable to form two passages, a passage communicating with the header tank and a passage communicating with the inlet side and the outlet side of the other header tank (claim 2).

[0007]

Therefore, the heat exchange medium flowing into one of the header tanks flows through the passage of the tube connected to this header tank, transfers the heat to the fins arranged between the tubes, and the air passing between the fins. Exchange heat. Further, the heat exchange medium flowing into the other header tank flows through another passage of the tube connected to this header tank, transfers heat to the fins arranged between the tubes, and the air passing between the fins. Exchange heat with. That is, since the heat exchange mediums flowing through the different core portions are supplied from different header tanks, it is possible to mold each header tank to the size of the capacity required for each core portion.

Further, since the pair of header tanks of the heat exchanger are provided vertically and the tubes provided between the header tanks can exchange heat with different heat exchange media in the longitudinal direction, the running wind of the vehicle can be reduced. Even if there is variation in the height direction, traveling wind can be applied to any of the core portions.

[0009]

Embodiments of the present invention will be described below with reference to the drawings.

In FIG. 1, a heat exchanger 1 is, for example, a radiator and a condenser integrated with each other, and a pair of header tanks (first header tank 2, The second header tank 3) and a plurality of tubes 4 passing between the pair of header tanks substantially horizontally
An end plate 5 passed between a pair of header tanks at both upper and lower ends, and fins 6 inserted between the tubes and also inserted between the tubes 4 and the end plates 5 at the upper and lower ends. are doing. Note that the fins 6 are continuously provided over the entire area of the tube 4, but in FIG. 1, for convenience, only a part thereof is shown and the others are omitted.

As shown in FIGS. 2 and 3, each of the header tanks 2 and 3 has a bowl-shaped tank plate 9 and 10 on a tube insertion plate 8 having a plurality of insertion holes 7 into which the tubes 4 are inserted. The interior of the tube 4 is divided into an inlet side A and an outlet side B by partition plates 11 and 12 extending in the stacking direction of the tube 4, and heat inlets 13 and 14 for the heat exchange medium are provided on the inlet side. The heat exchange medium outlets 15 and 16 are provided on the outlet side. Header tank 2
An inlet 17 for injecting the heat exchange medium is provided at the upper end portion of the, and the inlet 17 is closed by a cap 19.

The first header tank 2 is made of, for example, a synthetic resin, and a tank plate 9 and a partition plate 11 are integrally formed. The inlet side A of the header tank 2 has an inlet 1
7 are communicated with each other, an inflow port 13 is provided on the upper side, and the inflow port 13 is formed in a cylindrical shape so that an inlet hose can be connected. On the outlet side B of the header tank 2, an outlet port 15 is provided on the lower side, and the outlet port 15 is also formed in a cylindrical shape so that an outlet hose can be connected. The projecting direction of the outflow port 15 is the same as the projecting direction of the inflow port 13, and in this direction, the lower part of the inlet side A is narrowed toward the tube insertion plate 8, The outlet 15 is extended from the open portion.

On the other hand, the second header tank 3 is made of, for example, an aluminum material, and has a tank plate 10 and a partition plate 1.
It is composed of a member different from 2. An inflow port 14 is provided on the upper side of the inlet side A, and the inflow port 14 is configured by joining a cylindrical member formed separately to the tank plate 10. Further, on the outlet side B of the header tank 3, an outflow port 16 is provided on the lower side, and this outflow port 16 is also formed by a separate cylindrical member. The projecting direction of the outflow port 16 is the same as the projecting direction of the inflow port 14, and in setting the same direction as described above, the inlet side A
A depressed portion 20 which is depressed in advance is provided in the lower part of the, and a tubular member is inserted into a hole provided so as to face the depressed portion 20. The tube insertion plate 8, the tank plate 10, the partition plate 12, and the tubular members are joined by brazing or the like.

As shown in FIG. 4 (a), the tube 4 is formed by joining two molding plates 4a, 4a face-to-face. The molding plate 4a is formed by pressing an aluminum plate,
As shown in FIG. 4B, a first passage recess 21 and a second passage recess 22 are formed from both ends toward the center. Each of the passage recesses 21 and 22 is divided by a separation margin 23, and the first passage recess 21 and the second passage recess 22 are separated.
The ratio of the length of the tube is about 2: 1 and the width W of the tube is about 25 to 40 cm, which is larger than that of the conventional one.

Further, in each of the passage recesses 21 and 22, there is a protrusion 24 or 25 extending from each end to near the separation margin.
Are formed. Further, in the second passage recess 22,
A circular bead 26, for example, is formed to improve the breakdown voltage.

The ridges 24 and 25 and the beads 26 are formed so as to be flush with the joint margin 27 at the periphery of the molding plate, and are symmetrical with respect to the center line extending along the longitudinal direction at the center of the tube 4. Are formed on each other, and when the two molding plates 4a are joined at their peripheral edges, the ridges 24,
25 and a bead 26 are also joined, and the first passage 2 opened at one end of the tube 4 by the first passage recess 21 facing each other.
9, the second passages 22 facing each other form second passages 30 opening at the other end of the tube at the separation margin 23.

The end of the tube on the side of the first passage is joined to the insertion hole 7 formed in the tube insertion plate 8 of the first header tank 2 without any gap, and the end on the side of the second passage is connected to the second header tank. It is joined to the insertion hole 7 formed in the tube insertion plate 8 of No. 3 without any gap. In this state, the partition plates 11 and 12 of the header tanks 2 and 3 are provided with the ridges 2
4, 25 are contacted with each other without a gap, and the inlet side A and the outlet side B of each header tank have U-shaped first and second passages 29,
The communication is made by 30.

Therefore, the core portion of the radiator is constituted by the first passage side of the tube 4 connected to the first header tank 2 and the fin portion contacting the first passage portion of each tube 4, and the second header tank is formed. Tube 4 to connect with 3
Of the second passage and the fin portion in contact with the second passage portion of each tube 4 constitute the core portion of the condenser, and the heat exchange medium introduced from the inlet port 13 of the first header tank 2 is at the inlet side. Enter the first passage 29 from A, make a U-turn in the middle of the tube 4, reach the outlet side B, and
Drained from. Therefore, the heat of this heat exchange medium is
In the process of flowing through the passage 29, it is transmitted to the fins 6,
Heat is exchanged with the air passing between the fins. The heat exchange medium that has flowed in from the inlet 14 of the second header tank 3 enters the second passage 30 from the inlet A, makes a U-turn in the middle of the tube 4, reaches the outlet B, and then the outlet 16 Drained from. Therefore, the heat of the heat exchange medium is transferred to the second passage 30.
In the process of flowing through the fins, heat is exchanged with the air transmitted to the fins 6 and passing between the fins.

In order to improve the heat exchange efficiency by adopting the counter flow method, as shown in FIG. 4 (b), the inlet side A of each header tank 2, 3 is downstream with respect to the ventilation direction. Side, the outlet side B is the upstream side, and the heat exchange medium is U-turned from the downstream side to the upstream side as seen from the arrow.

As described above, the heat exchange medium is supplied from the header tank on one side on both the radiator side and the condenser side, and the heat exchange medium on the radiator side is the first type.
Since the heat exchange medium on the condenser side flows in and out via the header tank 2, and the heat exchange medium on the condenser side flows in and out via the second header tank 3, the tank capacity required for each side of the radiator and the condenser is the respective header. It can be obtained by appropriately adjusting the sizes of the tanks 2 and 3. In addition, the length between the header tanks provided vertically is 2 in the longitudinal direction of the tube 4.
Since two core parts are formed and tubes are stacked vertically on the radiator side and condenser side respectively, even if there is variation in the running wind flow in the vertical direction when the vehicle is running, The traveling wind sufficiently hits each of the heat exchange media to sufficiently cool them.

Further, since the two core portions are formed by laminating the tube 4 between the pair of header tanks,
It is clear that the number of parts can be reduced and the number of assembling steps can be significantly reduced as compared with the case where the heat exchangers are separately formed. The number of tubes can be reduced and it is not necessary to use separate fins for each core body as compared with the one in which the header tank is integrally formed with a plurality of core parts in the extending direction of the header tank. The number of parts can be reduced, and the number of parts and the number of assembly steps can be further reduced.

In the present invention in which the tubes 4 of different core portions are integrated, it is necessary to consider how to secure the heat exchange area required for each core and how to cope with the pressure resistance required for each core. However, as shown in the examples, when the length of the tube is limited due to the installation location, it can be dealt with by adjusting the width W of the tube. If it is high, the pressure-resistant beads may be formed in the passage recesses and the number thereof may be adjusted.

[0023]

As described above, according to the present invention,
Tubes are stacked in multiple stages between a pair of vertically arranged header tanks via fins, and each tube does not have a passage connecting to one header tank and a passage connecting to the other header tank. Since it is formed so that different heat exchange media can be heat-exchanged in the longitudinal direction of the tube, each header tank can be molded into the size of the volume required by the corresponding core portion, and the heat exchange can be performed. It is possible to improve efficiency.

Since a plurality of passages corresponding to the heat exchange medium of each core are formed in each tube, only one type of tube itself is required, and each core is formed in the longitudinal direction of the tube. Although the tube becomes longer, the header tank can be shortened, the header tank can be shortened, the number of laminated tubes can be reduced, and common fins can be used for different core parts, and the number of parts can be reduced, The man-hours for assembly can be significantly reduced.

Furthermore, since a plurality of core portions are formed in the longitudinal direction of the tubes between the header tanks arranged vertically, the core portions can travel to any of the core portions even if the running air volume of the vehicle differs in the height direction. Wind can be applied, and heat exchange efficiency can be improved.

[Brief description of drawings]

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

FIG. 2 is an enlarged view showing a radiator-side header tank (first header tank) and its vicinity, and FIG.
It is the side view which looked at the heat exchanger shown in FIG. 1 from the left side,
(B) is a front view and (c) is a perspective view.

FIG. 3 is an enlarged view showing a header tank (second header tank) on the condenser side and its vicinity, (a)
[Fig. 2] is a side view of the heat exchanger shown in Fig. 1 as viewed from the right side, (b) is a front view, and (c) is a perspective view.

4 is an enlarged view showing a tube element used in the heat exchanger shown in FIG. 1 and a header tank portion connected to the tube element, and FIG. 4 (a) is an enlarged view of the state shown in FIG. Yes, (b) is a view showing an end face cut by the α-α line in (a).

[Explanation of symbols]

 1 Heat Exchanger 2 First Header Tank 3 Second Header Tank 4 Tube 6 Fins 11 and 12 Partition Plate 21 First Passage Recess 22 Second Passage Recess 23 Separation Allowance 29 First Passage 30 Second Passage A Inlet Side B Exit side

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Katsuo Hamada 39 Toyo-ji, Toyo, Konan-cho, Osa-gun, Saitama Prefecture Inside the Zekcel Gangnam Plant (72) Inventor Kazuo Hayashi 39 Toyo-hara, Toyo-ji, Konan-cho, Osa-gun, Saitama Prefecture Address: XXEL Gangnam Factory

Claims (2)

[Claims] 1. A pair of vertically arranged header tanks is provided, and a plurality of tubes are formed so that a passage connected to one header tank and a passage connected to the other header tank do not communicate with each other. A heat exchanger characterized in that the header tanks are stacked in a plurality of stages via fins so that heat exchange media different in the longitudinal direction of the tube can exchange heat with the outside air. 2. The inside of the header tank is divided into an inlet side and an outlet side by a partition plate extending in the stacking direction of the tubes, and the inlet side and the outlet side of one header tank communicate with the tube. The heat exchanger according to claim 1, wherein two passages are formed, which are a passage and a passage that connects the inlet side and the outlet side of the other header tank.