JP2000304489A - Heat exchanger and heat radiator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the manufacturing cost of a condenser and improve an assembling and maintenance properties to a vehicle. SOLUTION: A refrigerant flow inlet 124 and a refrigerant flow outlet 125 are formed in a first header tank 121 in the state where first and second header tanks 121, 122 are disposed on longitudinal upper and lower end sides of a tube 111. Consequently, both of the refrigerant flow inlet 124 and the refrigerant flow outlet 125 are located on an upper side, and hence a condenser 100 is assembled in a vehicle without increasing the number of parts. Thus, assembling property of the condenser 100 into the vehicle is improved while reducing the manufacturing cost of the condenser 100.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a heat exchanger, and is effective when applied to a condenser or a radiator of a refrigeration cycle for a vehicle.

[0002]

2. Description of the Related Art A general configuration of a condenser of a refrigeration cycle for a vehicle is disclosed, for example, in Japanese Patent Application Laid-Open No. 10-17018.
As described in Japanese Patent Application Publication No. 8 (1996), a plurality of tubes are arranged in a horizontal direction, and a header tank extending vertically is arranged at both ends in the longitudinal direction of the tubes.

[0003]

By the way, in the invention described in the above-mentioned publication, in order to improve the assembling property (mountability) to the vehicle, both the refrigerant inlet joint and the refrigerant joint are connected to the upper end of the condenser. Therefore, a bypass passage extending from the lower end side to the upper end side of the header tank is newly provided separately from the header tank.

[0004] Therefore, the number of parts of the condenser increases, which leads to an increase in the manufacturing cost of the condenser. The present invention
In view of the above, it is an object of the present invention to reduce the manufacturing cost of a heat exchanger such as a condenser while improving the assemblability to a vehicle.

[0005]

In order to achieve the above object, according to the present invention, a plurality of tubes (111) extending vertically and through which a fluid flows are provided. A core portion (110), which is provided between a plurality of tubes (111) and is composed of fins (112) for promoting heat exchange of fluid, and a tube (111) extending in a direction orthogonal to the longitudinal direction of the tube (111). 111), the first and second header tanks (121, 122) communicating with the plurality of tubes (111), and the first and second header tanks (121, 122).
A first space (121a) provided in the header tank (121), the separator (123) partitioning the inside of the first header tank (121) into at least a first space (121a) and a second space (121b); And the first external pipe (P1)
And an inflow port (124) through which fluid flows into the first space (121a), and a fluid from the second space (121b) and the second external pipe (P2) to communicate fluid into the second space (1).
21b) An outlet (125) for flowing out is formed in the first header tank (121).

Accordingly, both the inlet (124) and the outlet (125) can be formed in the first header tank (121) without newly providing a bypass passage, so that the number of parts of the heat exchanger can be reduced. And the manufacturing cost of the heat exchanger can be reduced, and the assemblability of the heat exchanger can be improved.
By the way, in a general vehicle, a heat exchanger such as a condenser or a radiator is assembled and maintained by opening the hood of the hood upward, so that the maintainability of the heat exchanger in the vehicle is improved. It is desirable to be able to work from above.

On the other hand, according to the second aspect of the present invention, the first header tank (121) includes the tube (111).
Is arranged at the upper end side in the longitudinal direction of the inflow port (12
4) and the outlet (125) are both located on the upper side. Therefore, if the heat exchanger according to the present invention is applied to a vehicle, it is possible to improve the maintainability of assembling the heat exchanger to the vehicle.

According to the third aspect of the present invention, the inflow port (12)
4) and the outlet (125) are formed adjacent to and near the separator (123). This makes it possible to simplify the layout of the two external pipes (P1, P2), thereby improving the assemblability of the heat exchanger. . According to the invention as set forth in claim 4, a radiator for a vehicle refrigeration cycle that is disposed upstream of an air flow of a vehicle radiator (200) and cools a refrigerant, and extends in a vertical direction. A core portion (110) including a plurality of tubes (111) through which a fluid flows, and fins (112) disposed between the plurality of tubes (111) to facilitate heat exchange of the fluid; and a tube (111). A first header tank (121) that extends in a direction perpendicular to the longitudinal direction of the tube (111) and is disposed on the upper end side in the longitudinal direction of the tube (111) and communicates with the plurality of tubes (111).
Extending in a direction orthogonal to the longitudinal direction of the tube (111) and disposed at a lower end side in the longitudinal direction of the tube (111);
A second header tank (122) communicating with the plurality of tubes (111) is provided in the first header tank (121), and at least a first header tank (121) is provided in the first header tank (121).
A separator (123) for partitioning the space into a space (121a) and a second space (121b). The first space (121a) and the first external pipe (121b) are communicated with each other to allow fluid to flow in the first space (121a). An inlet (124) for flowing into the first header and an outlet (125) for allowing the fluid to flow out of the second space (121b) by communicating the second space (121b) with the second external pipe (P2). The first header tank () is formed in the tank (121), and the longitudinal dimension (L 1) of the first header tank () is:
The first header tank (12) of the core portion (110)
The size (L2) of the portion parallel to the longitudinal direction in (1) is larger than the size (L2), and the inflow port (124) is provided in the first header tank (121).
Is formed at one end in the longitudinal direction of the core portion (110) and is located at a position shifted outward from the end portion of the core portion (110).
25) is characterized in that it is formed at the other end in the longitudinal direction of the first header tank (110) and is located at a position shifted outward from the end of the core portion (110).

As a result, as in the first aspect of the present invention, it is possible to improve the assemblability of the heat exchanger while reducing the manufacturing cost of the heat exchanger. By the way, temporarily, the inflow port (124) and the outflow port (125) are connected to the core portion (11).
When the inflow port (124) and the outflow port (125) are opened toward the radiator (200) side without being located at a position shifted outward from the end of (0), the inflow port (124)
In addition, since the outlet (125) is opposed to the radiator (200), there is a problem that the resistance of the air flowing through the radiator and the radiator (200) is reduced, and the amount of air passing through both of them decreases.

On the other hand, to solve this problem, the size of the radiator (200) may be reduced. However, this means reduces the cooling capacity of the radiator (200). On the other hand, in the present invention, the inflow port (124) is connected to the core portion (1).
10), the inlet (124) and the outlet (125) are connected to the radiator (2) without reducing the size of the radiator (200).
(00) side.

Therefore, the two external pipes (P1, P2) can be easily connected to equipment constituting the refrigeration cycle provided on the vehicle rear side of the radiator (200) without reducing the size of the radiator (200). Therefore, the radiator can be attached to the vehicle with improved maintainability. Incidentally, the reference numerals in parentheses of the above means are examples showing the correspondence with specific means described in the embodiments described later.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS (First Embodiment)
The heat exchanger according to the present invention is applied to a condenser of a vehicle refrigeration cycle, and FIG. 1 shows a condenser 1 according to the present embodiment.
FIG. 2 is a front view of the air conditioner 00 as viewed from the air flow upstream side. As shown in FIG. 2, the condenser 100 is disposed upstream of the radiator 200 for the vehicle on the air flow upstream side of the engine room.

In FIG. 1, reference numeral 111 denotes a plurality of flat tubes through which a refrigerant (fluid) flows, and the tubes 111 are arranged to extend in a vertical direction. 112 is the tube 1
11 are corrugated (corrugated) fins disposed between the fins 11 to promote heat exchange between the refrigerant and the air.
And the tube 111, the core 110 of the condenser 100.
Is configured.

Incidentally, the tube 111 is formed by extruding an aluminum material, and the fin 112
Is a thin plate-shaped aluminum material molded by a roller molding machine, and both 111 and 112 are brazed and joined by a brazing material coated (cladded) on the front and back surfaces of the fin 112. In addition, a first end extending in a direction (horizontal direction) orthogonal to the longitudinal direction of the tube 111 and communicating with the plurality of tubes 111 is provided on the upper end side in the longitudinal direction of the tube 111.
A header tank 121 is provided, and a second header tank 122 that extends in a direction (horizontal direction) perpendicular to the longitudinal direction of the tube 111 and communicates with the plurality of tubes 111 is provided at a lower end side in the longitudinal direction of the tube 111. Have been.

Incidentally, both header tanks 121, 122
Is composed of an aluminum core plate connected to the tube 111, and an aluminum tank main body brazed to the core plate to form a space in the tank. In the first header tank 121, the separator 12 that divides the inside of the first header tank 121 into substantially equal parts and partitions it into a first space 121a and a second space 121b.
3 are provided. Then, the first header tank 121
Of the first space 12 (on the right side in the drawing)
1a and the first external pipe P1 communicate with each other to form a refrigerant inlet 124 for allowing the refrigerant to flow into the first space 121a,
On the other hand, the second space 12 is located at the other end in the longitudinal direction (left side on the paper).
A refrigerant outlet 125 is formed to allow the refrigerant to flow out of the second space 121b by connecting the first external pipe 1b to the second external pipe P2.

Incidentally, the first external pipe P1 is connected to a compressor (not shown) of the refrigeration cycle, and the second external pipe P2 is connected to a pressure reducer (not shown) of the refrigeration cycle.
Is connected to the side. Thereby, the refrigerant inlet 1
24 to the first header tank 121 (first space 121a)
The refrigerant that has flowed into the inside is separated by the separator 123 and the refrigerant inlet 1.
24, flows into the second header tank 122 through the tube 111, and then the separator 123
Flows through the tube 111 existing between the first header tank 121 (the second space 121b) and the refrigerant outlet 125.
After flowing into the refrigerant outlet 125, the second external pipe P2
Spills out towards.

Reference numeral 131 denotes a first connection block for connecting the first external pipe P1 to the refrigerant inlet 124. The first connection block 131 is connected to the first external pipe P1.
1 and a connection block Pj1 joined by bolts. 132 connects the second external pipe P2 to the refrigerant outlet 1
The second connection block 132 is connected to the connection block Pj2 joined to the second external pipe P2 by bolts.

Incidentally, both connecting blocks 131 and 132 are made of aluminum, and these 131 and 132 are joined to the first header tank 121 by brazing. Next, features of the present embodiment will be described. In the present embodiment, both the refrigerant inlet 124 and the refrigerant outlet 125 are formed in the first header tank 121 in a state where both the header tanks 121 and 122 are disposed on the upper and lower ends in the longitudinal direction of the tube 111. In order to form both the refrigerant inlet 124 and the refrigerant outlet 125 in the first header tank 121, it is not necessary to newly provide a bypass passage.

Therefore, the number of components of the condenser 100 can be reduced as compared with the invention described in the above-mentioned publication, so that the production cost of the condenser 100 can be reduced while the condenser 1 can be manufactured.
00 can be easily assembled to a vehicle.
By the way, in a general vehicle, the equipment in the engine room such as the condenser and the radiator is assembled and maintained by opening the hood to the upper side, so that the maintainability of the condenser to the vehicle is improved. It is desirable to be able to work from above.

On the other hand, in this embodiment, since both the refrigerant inlet 124 and the refrigerant outlet 125 are located on the upper side, the maintainability of the condenser 100 assembling to the vehicle can be improved. . (Second Embodiment) In this embodiment, as shown in FIG. 3, the length L1 of the first header tank 121 in the longitudinal direction is
0, the dimension L2 of the portion parallel to the longitudinal direction of the first header tank 121 is larger than the dimension L2.
4 is located at a position shifted outward (right side in the drawing) from the end of the core portion 110, and the refrigerant outlet 125 is positioned at a position shifted outward (left side in the drawing) from the end of the core portion 110. It is a thing.

Next, the features of this embodiment will be described. By the way, the refrigerant inlet 124 and the refrigerant outlet 125 are opened toward the radiator 200 side without arranging the refrigerant inlet 124 and the refrigerant outlet 125 at a position shifted outward from the end of the core part 110. Then, the refrigerant inlet 12
4 and the refrigerant outlet 125 are opposed to the core of the radiator 200, so that the resistance of the air flowing through the core of the condenser 100 and the core of the radiator 200 is reduced, and the amount of air passing through both heat exchangers is reduced. The problem occurs.

On the other hand, this problem can be solved by reducing the size of the core of the radiator 200. However, this means reduces the cooling capacity of the radiator 200. On the other hand, in the present embodiment, since the refrigerant inlet 124 is located at a position shifted outward (to the right in the drawing) from the end of the core 110, the core of the radiator 200 can be reduced in size. , Refrigerant inlet 124 and refrigerant outlet 12
5 can be opened toward the radiator 200 side (vehicle rear side).

Therefore, it is possible to easily connect the external pipes P1 and P2 to devices constituting a refrigeration cycle such as a compressor and a decompressor provided on the vehicle rear side with respect to the radiator 200 without reducing the size of the radiator 200. Since it is possible, the maintainability of assembling the condenser 100 to the vehicle can be improved. (Third Embodiment) In the present embodiment, as shown in FIG. 5, the refrigerant inlet 124 and the refrigerant outlet 125 are located at positions shifted outward from the end of the core portion 110. The positions of the first and second connection blocks 131 and 132 are shifted from the radiator 200 to the downstream side of the air flow (rear side of the vehicle), and the refrigerant pipes 141 and 142 connecting the first and second connection blocks 131 and 132 and the first header tank 121. The clamps 211 and 212 for supporting and fixing the radiator 200
It is provided in.

Next, the features of this embodiment will be described. In the present embodiment, the clamp 21 that supports and fixes the refrigerant pipes 141 and 142 connecting the first and second connection blocks 131 and 132 and the first header tank 121 to the radiator 200.
1 and 212, the radiator 2
00 and the condenser 100 can be treated as one component (sub-assembly).

Therefore, the radiator 200 and the condenser 1
Since it can be assembled to the vehicle at the same time as 00, the assemblability of both 200 and 100 can be improved. (Fourth Embodiment) In this embodiment, as shown in FIG.
In this state, both 124 and 125 are formed adjacent to each other in a state of being close to the separator 123 with 3 interposed therebetween.

As a result, the first and second connection blocks 13
Since the connection blocks 1 and 132 can be integrated (hereinafter, the integrated connection block is referred to as an integrated connection block 133), the connection blocks Pj1 and Pj2 can also be integrated. Therefore, the layout of the external pipes P1 and P2 can be simplified, and the ease of assembling the condenser 100 to the vehicle can be improved.

(Fifth Embodiment) In the present embodiment, as shown in FIG.
At one end in the longitudinal direction, and its extension direction (right side on the paper)
, And the refrigerant outlet 125 is opened at the other end of the first header tank 121 in the longitudinal direction in the extension direction (left side in the drawing).

The present embodiment is effective when applied to a vehicle having an engine room with a margin (space) relatively in the vehicle width direction. By the way, in the above-described embodiment, the embodiment of the present invention has been described by taking the condenser applied to a relatively small vehicle such as a passenger car as an example. However, in a large vehicle such as a construction machine or a truck, the vehicle height is high. In such a case, it is preferable to form the refrigerant inlet 124 and the refrigerant outlet 125 in the second header tank 122 (the lower header tank).

In the above embodiment, the heat exchanger according to the present invention has been described by taking a condenser as an example. However, the present invention is not limited to this, and other heat exchangers such as a radiator and a radiator may be used. It can also be applied to vessels.

[Brief description of the drawings]

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

FIG. 2 is a top view of FIG.

FIG. 3 is a front view of a condenser according to a second embodiment of the present invention.

FIG. 4 is a top view of FIG. 2;

FIG. 5 is a top view of a condenser according to a third embodiment of the present invention.

FIG. 6A is a front view of a condenser according to a fourth embodiment of the present invention, and FIG. 6B is a top view of FIG.

FIG. 7 is a top view of a condenser according to a fifth embodiment of the present invention.

[Explanation of symbols]

100: condenser, 110: core, 111: tube,
112 ... fin, 121 ... first header tank, 122 ...
Second header tank, 123 ... separator, 124 ... refrigerant inlet, 125 ... refrigerant outlet.

Claims (4)

[Claims] 1. A heat exchanger for a vehicle, comprising: a plurality of tubes (111) extending vertically and through which a fluid flows; and a plurality of tubes (11).
1) Fins (1) arranged between them to promote heat exchange of fluid
12) a core portion (110), which extends in a direction perpendicular to the longitudinal direction of the tube (111), and is disposed at both ends in the longitudinal direction of the tube (111); The first to communicate
2 header tanks (121, 122), provided in the first header tank (121), and the inside of the first header tank (121) has at least a first space (1).
21a) and a separator (123) for partitioning into a second space (121b). The first space (121a) and the first external pipe (P1) communicate with each other to allow a fluid to flow in the first space (121a). Inlet (124) for inflowing into the second space (121b)
And the second external pipe (P2) to communicate fluid with the second external pipe (P2).
A heat exchanger wherein an outlet (125) for flowing out of the space (121b) is formed in the first header tank (121). 2. The heat exchanger according to claim 1, wherein the first header tank (121) is disposed at a longitudinally upper end of the tube (111). 3. The inlet (124) and the outlet (125) are formed adjacent to and near the separator (123).
A heat exchanger according to item 1. 4. A radiator for a vehicle refrigeration cycle, which is disposed upstream of an air flow of a vehicle radiator (200) and cools a refrigerant. Tube (111) and the plurality of tubes (11
1) Fins (1) arranged between them to promote heat exchange of fluid
12) a core portion (110), which extends in a direction perpendicular to the longitudinal direction of the tube (111) and is disposed at the upper end side in the longitudinal direction of the tube (111); A first header tank (121) that communicates with the plurality of tubes (111), the first header tank (121) extending in a direction perpendicular to the longitudinal direction of the tubes (111), and disposed at a lower end in the longitudinal direction of the tubes (111); A second header tank (122) communicating with the first header tank (121), and at least a first space (1) is provided in the first header tank (121).
21a) and a separator (123) for partitioning into a second space (121b), wherein the first space (121a) and the first external pipe (121b) are provided.
And an inflow port (124) through which fluid flows into the first space (121a) and the second space (121).
b) an outlet (125) for allowing fluid to flow out of the second space (121b) by communicating the second external pipe (P2) with the second external pipe (P2);
Are formed in the first header tank (121), and the longitudinal dimension (L
1) The dimension (L2) of a portion of the core portion (110) parallel to the longitudinal direction of the first header tank (121).
The inlet (124) is larger than the first header tank (12).
The core portion (11) is formed at one longitudinal end of the core portion (1).
0), the outlet (125) is formed at the other end in the longitudinal direction of the first header tank (110), and the outlet (125) is formed at the other end of the core (110). A radiator, which is located at a position shifted outward from an end of the radiator.