JP2002147990A - Heat exchanger - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve heat exchange efficiency by allowing a heat exchanger to flow nearly equally to a refrigerant channel in the ventilation direction of any tube by reducing the drift of a refrigerant to double-tank-type heat exchanger. SOLUTION: A double-tank-type heat exchanger comprises tanks 6 and 7, tubes 2 and 3 that are connected to both the tanks 6 and 7 for connecting the tanks 6 and 7, fins 4 that are laminated in a plurality of stages alternately with the tubes 2 and 3, and inlet/outlet sections 18 and 19 of a refrigerant being provided at the tank 6. Both the insides of the tanks 6 and 7 are partitioned by a partition section 14 being extended in each lamination direction. Two compartments 15 and 16 or 21 and 22 that are arranged side by side in the direction of ventilation are provided. For the tank 6 of the double-tank-type heat exchanger 1, a refrigerant-traveling section 23 is provided at one side end site in the lamination direction, and the refrigerant can travel between the compartments 15 and 16 only at the refrigerant-traveling section 23.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a two-tank heat exchanger which is used as an evaporator in a refrigeration cycle of a vehicle air conditioner, for example, and in which a tube and a tank are formed separately.

[0002]

2. Description of the Related Art As an existing four-pass type two-tank heat exchanger, as shown in FIG.
Are two tank blocks 101, 1 extending in the stacking direction.
02, and the tank 103 is divided into two tank blocks 104 and 105 extending in the ventilation direction, and the tank block 104 on the side where the refrigerant enters and exits.
Is the tank block 10 connected to the inlet 106 of the refrigerant.
4A and a tank block 104B communicating with the outlet 107 of the refrigerant.

According to the configuration of the heat exchanger having such a configuration, the flow of the refrigerant flows from the tank block 104A to the tank block 101 via the tube to the first block.
Path ((1) in FIG. 10), a second path ((2) in FIG. 10) flowing from the tank block 101 to the tank block 105 via the tube, and after moving inside the tank block 105 in the ventilation direction. , The tank block 105
A third path ((3) in FIG. 10) flowing from the tank block 102 to the tank block 102 via the tube, and moving from the tank block 102 to the tank block 104B via the tube after moving inside the tank block 102 in the stacking direction. Four paths ((4) in FIG. 10) are formed.

[0004]

However, in such a flow of the refrigerant in the heat exchanger, when moving from the second pass to the third pass, the flow direction of the refrigerant in all portions of the tank block 105 is changed. If the transfer to the tubes is allowed, the amount of refrigerant flowing through the tubes will be biased, and the heat exchange rate with respect to the air passing between the tubes will be reduced.

[0005] On the other hand, as a result of the applicant's tests so far, when the refrigerant is moved to the adjacent tank block in the ventilation direction only on the end side in the stacking direction of the tank, the upstream of the compartment in the ventilation direction. It has been found that the distribution of the refrigerant is easy to flow evenly between the airflow chamber and the downstream compartment in the ventilation direction. When a tank block is formed by stacking tanks formed integrally with a plurality of tubes in a stacking direction, unevenness occurs on the sides of the tank block, and when the refrigerant flows in the tank block in the stacking direction, the unevenness occurs. Is considered as a flow path resistance, and it is considered that even if the refrigerant is moved to the adjacent tank block in the ventilation direction only on the end side in the stacking direction of the tank, the uniform distribution of the refrigerant cannot be sufficiently achieved.

Therefore, in the present invention, based on the above test results and by preventing the occurrence of irregularities on the sides of the tank, the drift of the refrigerant is suppressed, and the refrigerant flow path in any of the tubes in the ventilation direction is controlled. It is another object of the present invention to provide a heat exchanger capable of improving the temperature distribution by flowing the heat exchange medium almost uniformly.

[0007]

SUMMARY OF THE INVENTION A heat exchanger according to the present invention comprises two tanks, a plurality of tubes connected to both of these tanks and communicating between the tanks,
Fins that are alternately stacked with these tubes in multiple stages,
A refrigerant chamber provided in one or both of the tanks, wherein the inside of each of the tanks is partitioned by a partition extending in the laminating direction, and each of the tanks is provided with an image chamber arranged in the ventilation direction. In the heat exchanger, one of the tanks is provided at one end thereof in a stacking direction with a refrigerant moving portion that enables movement of the refrigerant between the adjacent compartments in the ventilation direction. Item 1).

With this configuration, each tank is divided into two compartments juxtaposed in the ventilation direction by a partition portion extending in the ventilation direction, and the movement of the refrigerant in the ventilation direction is restricted. One of the tanks is provided with a refrigerant moving portion communicating between the compartments adjacent to one end portion in the laminating direction, and the refrigerant is intensively moved only in the refrigerant moving portion in the ventilation direction, and then opposite to the previous direction. Since it is possible to move the refrigerant in any direction, the distribution of the refrigerant is less likely to be biased at least between the compartments adjacent to each other in the ventilation direction, and the temperature distribution can be improved. Also, in this heat exchanger, since the tank and the tube are separate components, the tank can be formed by extrusion molding or the like. Since unevenness can be prevented from being formed on the side, even when the refrigerant moves in the laminating direction in each compartment, the passage resistance can be reduced, and the distribution of the refrigerant can be made more uniform. be able to. Furthermore, since the tank and the tube are separate components, the degree of freedom of the shape, such as the size in the stacking direction of the tank, is increased, so that the refrigerant moving portion can be formed integrally with the tank, Unlike the case where the refrigerant moving section is formed of a member separate from the tank, there is no danger of the refrigerant leaking from the joint portion, and the manufacturing cost is reduced.

In particular, as the two-pass type heat exchanger, the first and second tanks are connected to both the first and second tanks, and the first and second tanks are connected to each other.
A plurality of tubes that communicate the tank and the second tank, fins that are alternately stacked with the tubes in a plurality of stages, and a refrigerant inlet / outlet portion provided in the first tank. In a heat exchanger provided with two compartments in which the insides of the first and second tanks are partitioned by a partition extending in the stacking direction and arranged side by side in the ventilation direction, one of the first tanks on the stacking direction side While forming the inlet / outlet portion of the refrigerant at a side end portion, it is possible to move the refrigerant in the ventilation direction between the adjacent compartments at an end portion of the second tank opposite to the side where the inlet / outlet portion is formed. A cooling medium moving section is provided (claim 2).

The heat exchanger of the four-pass type includes a first tank and a second tank, and the first and second tanks connected to both the first tank and the second tank.
A plurality of tubes that communicate the tank and the second tank, fins that are alternately stacked with the tubes in a plurality of stages, and a refrigerant inlet / outlet portion provided in the first tank. The interior of the first and second tanks is partitioned by a partition extending in the stacking direction, and includes two compartments arranged side by side in the ventilation direction, and a partition extending in the ventilation direction in the compartment of the first tank. In the heat exchanger divided into two parts, an inlet / outlet part of the refrigerant is formed at one end of the first tank in the stacking direction side, and the inlet / outlet part of the first tank is formed. And an end portion on the side opposite to the side provided with a refrigerant moving portion that enables the refrigerant to move in the ventilation direction between the adjacent compartments.

Further, among the heat exchangers of the three-pass type, the heat exchanger is connected to both a first tank and a second tank, and both the first tank and the second tank. A plurality of tubes communicating the first tank and the second tank, fins stacked alternately with the tubes in a plurality of stages, and a refrigerant inlet provided in the first tank;
Having a refrigerant outlet provided in the second tank,
The inside of each of the tanks is partitioned by a partition portion extending in the stacking direction, and includes two compartments arranged side by side in the ventilation direction, and a compartment that communicates with a refrigerant inlet of the first tank. In a heat exchanger divided into two by a partition extending in the ventilation direction, an inlet portion of the refrigerant is formed at one end portion on the lamination direction side of the first tank; An outlet portion of the refrigerant is formed at one end portion on the lamination direction side, and a flow direction of the refrigerant between the adjacent compartments is formed at an end portion of the first tank opposite to the side where the entrance portion is formed. An example is provided in which a refrigerant moving section that enables movement is provided (Claim 4).

Then, as a result of the applicant's tests so far,
In order to more efficiently derive the performance of the heat exchanger having the above-described configuration, the refrigerant flow path area as viewed from the ventilation direction of the refrigerant moving unit is relative to the refrigerant flow path area as viewed from the stacking direction side of the compartment. It has been found that the ratio is preferably within a range of 100% or less and 40% or more (claim 5).

[0013]

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

The heat exchanger 1 shown in FIGS. 1 and 2 is a double tank type evaporator used for a vehicle, for example, and has tubes 2 and 3 arranged side by side in the ventilation direction. Corrugated fins 4 alternately stacked in a plurality of stages, end plates 5 and 5 arranged on both sides in the stacking direction, a tank 6 provided at one longitudinal end of the tubes 2 and 3, And a tank 7 provided at one end on the opposite side.

The tubes 2 and 3 are formed by bending a single brazing sheet into a plurality of stages by roll homing or press working, for example, and have a refrigerant passage therein. Tank insertion portions 9 are formed on both ends, and the insertion portions 9 are inserted into the tanks 6 and 7 so that the tank 6 and the tank 7 communicate with each other. The tubes 2 and 3 may have a structure in which inner fins are housed or a plurality of beads may be formed on the inner surface in order to improve the stirring performance of the refrigerant.

On the other hand, the tanks 6 and 7 each have a connection hole 10 for connection to the tubes 2 and 3 and a cylindrical body 11 made of an aluminum alloy having an opening along the ventilation direction. The cylindrical member 11 is formed by a closing member 12 or 13 for closing the opening of the cylindrical member 11, and the cylindrical member 11 is formed by, for example, extrusion molding. The closing member 13 is for closing an opening of the tubular body 11 on the side of the refrigerant moving portion 23, which will be described later.
Each of the compartments 15, 1 described below other than the refrigerant moving portion 23
6, 21 and 22 are to be closed.

The tank 6 has a partition 1 whose inside extends in the laminating direction (in the direction perpendicular to the white arrow in FIG. 1).
4, the compartments 15 and 16 are arranged side by side in the ventilation direction, and the compartments 15 and 16 are separated by a partition 17 extending in the ventilation direction at substantially the center in the stacking direction. 16B. Note that the partition 17 is provided in the compartment 15 as shown in FIG.
The structure is not limited to the structure in which the image room 16 and the image chamber 16 are partitioned at the same place in the stacking direction. The image room 15 and the image room 16 may be partitioned at a position slightly shifted in the layer direction.

The tank 6 is provided with refrigerant inlets and outlets 18 and 19 on the bottom side of one end in the stacking direction. Then, from the end portion of the tank 6 in the stacking direction opposite to the side where the entrance / exit portions 18 and 19 of the tank 6 are provided, to a portion located inside in the stacking direction.
A refrigerant moving portion 23 is provided which communicates with the image chambers 15B and 16B and is capable of moving the refrigerant in the ventilation direction. This refrigerant moving section 2
3 may be formed by forming the partition part 14 integrally with the cylindrical body 11 and cutting out a part thereof. Alternatively, one end of the partition 14 in the stacking direction in the stacking direction may be shorter than the end of the cylindrical body 11 in the stacking direction, and the partition 14 may be formed by inserting the partition 14 into the cylindrical body 11.

On the other hand, the tank 7 has a partition portion 14 whose interior extends in the laminating direction (the direction perpendicular to the white arrow in FIG. 1).
Are partitioned into picture chambers 21 and 22 juxtaposed in the ventilation direction.

The heat exchanger 1 having such a configuration performs a four-pass system flow as shown in FIG. Each path is a set of routes flowing through the plurality of tubes 2 and 3, and three points (the center and both sides) are selected and shown from among them.

That is, the refrigerant flowing from the inlet 18 into the compartment 15A of the tank 6 moves in the laminating direction to a portion connected to the tubes 2 as shown in (1) in FIG. Inflow. In this case, for example, as shown in FIG. 2 (2), the flow flowing into the tube 2 near the inlet portion 18 side, and as shown in FIG. 2 (3), the inside of the image chamber 15A between the end plate 5 and the partition 17 is formed. Flow to the tube 2 located at the center of the tube 2 (FIG. 2, (4))
As described above, a flow which flows into the tube 2 by moving in the compartment 15A to the vicinity of the partition 17 in the stacking direction is formed.

Then, the refrigerant flowing into each tube 2 descends toward the compartment 21 and joins in the compartment 21,
The combined refrigerant is supplied to the partition 1 as shown in (5) of FIG.
After moving in the stacking direction along the direction 4 and reaching below the tube 2 having one end connected to the image chamber 15B, it flows into the tube 2. In this case, for example, the flow flowing into the tube 2 near the center in the stacking direction of the heat exchanger 1 as shown in (6) in FIG. The flow which moves to the space between the ends in the stacking direction and flows into the tube 2 located at the center thereof, moves to the vicinity of the end in the stacking direction of the heat exchanger 1 and flows into the tube 2 as shown at (8) in FIG. A flowing stream is formed.

Next, the refrigerant flowing into each tube 2 rises toward the compartment 15B and merges in the compartment 15B. The merged refrigerant is transferred to the refrigerant moving part 23 as shown in FIG. Move in the stacking direction along the partition 14 until
For the first time, the refrigerant moving portion 23 moves in the ventilation direction and makes a U-turn in the direction opposite to the stacking direction so far,
It flows into the picture room 16B.

Further, the refrigerant flowing into the compartment 16B moves in the laminating direction along the partition 14 as shown in (10) in FIG. In this case, for example, the flow flowing into the tube 3 near the refrigerant moving part 23 as shown in (11) in FIG. 2, and moves between the refrigerant moving part 23 and the partition part 17 as shown in (12) in FIG. And flows into the tube 3 located at the center of the
As shown in 3), a flow that flows in the interior of the chamber 16B to the vicinity of the partition 17 and flows into the tube 3 is formed.

Further, the refrigerant flowing into each tube 3 descends toward the compartment 22 and joins in the compartment 22, and the joined coolant is transferred to the partition 14 as shown at (14) in FIG. After moving along the stacking direction and reaching below the tube 3 whose one end is connected to the image chamber 16 </ b> A, it flows into the tube 3. In this case, for example, in FIG.
The flow flowing into the tube 3 near the center in the stacking direction of the heat exchanger 1 as shown in 5), and moves between the center and the end in the stacking direction of the heat exchanger 1 as shown in (16) in FIG. The flow flowing into the central tube 3 moves to the vicinity of the end of the heat exchanger 1 in the stacking direction as shown in (17) in FIG.
Is formed.

Finally, the refrigerant flowing into each of the tubes 3 rises toward the compartment 16A and joins in the compartment 16A, and the joined coolant is transferred to the partition 14 as shown at (18) in FIG. It moves along the stacking direction and flows out of the heat exchanger 1 from the outlet 19. That is, in each of the centers and the routes on both sides thereof, an equal amount of the refrigerant flows through the tubes, and the temperature distribution becomes uniform.

The heat exchanger 1 shown in FIGS. 3 and 4 is also a double-tank type evaporator used for a vehicle, for example, and has tubes 2 and 3 arranged side by side in the ventilation direction. Corrugated fins 4 alternately stacked in a plurality of stages, end plates 5 and 5 arranged on both sides in the stacking direction, a tank 6 provided at one longitudinal end of the tubes 2 and 3, 1 and 2 in that it is constituted by a tank 7 provided at one end opposite to
1 is different from the heat exchanger 1 shown in FIGS. 1 and 2 in that it is a two-pass type. Hereinafter, the same components as those of the heat exchanger 1 shown in FIG. 1 and the like are denoted by the same reference numerals, and description thereof will be omitted, and different configurations of the tanks 6 and 7 will be described.

Of these, the tank 6 has a partition portion 14 whose interior extends in the stacking direction (perpendicular to the white arrow in FIG. 3).
The compartments are divided into picture chambers 15 and 16 arranged side by side in the ventilation direction, and inlet and outlet portions 18 and 19 for the refrigerant are provided on the upper surface side of one end portion in the stacking direction.

On the other hand, the tank 7 has, in principle, an image chamber 21 in which the inside is juxtaposed in the ventilation direction by a partition portion 14 extending in the stacking direction (the direction perpendicular to the white arrow in FIG. 3).
22 is located on the opposite side of the tank 6 in the laminating direction from the side where the entrances and exits 18 and 19 are provided. A part 23 is provided. This refrigerant moving section 2
3, the partitioning part 14 is formed integrally with the cylindrical body 11 and is formed by cutting out a part thereof, or one end of the partitioning part 14 in the laminating direction is an end of the cylindrical body 11 in the laminating direction. The partition 14 may be formed by inserting the partition 14 into the tubular body 11.

The heat exchanger 1 having such a configuration performs a two-pass flow as shown in FIG. Each path is a set of routes flowing through the plurality of tubes 2 and 3, and three points (the center and both sides) are selected and shown from among them.

That is, the refrigerant flowing into the compartment 15 of the tank 6 from the inlet 18 is supplied to the partition 1 as shown in FIG.
While flowing in the stacking direction along 4, they flow into individual tubes 2. In this case, for example, as shown in FIG. 4 (2), the flow flowing into the tube 2 near the entrance 18 side moves as shown in FIG. The flow flowing into the tube 2 is formed as shown in (4) in FIG. 4 and moves to the vicinity of the opposite end in the stacking direction in the compartment 15 as shown in FIG.

Then, the refrigerant flowing into each tube 2 descends toward the compartment 21 and merges in the compartment 21.
The joined refrigerant moves in the laminating direction along the partition part 14 to the refrigerant moving part 23 as shown in (5) in FIG. 4, and moves in the refrigerant moving part 23 for the first time in the ventilation direction and in the laminating direction so far. Makes a U-turn in the direction opposite to the above, and flows into the image chamber 22. Further, the refrigerant flowing into the compartment 22 moves in the laminating direction and flows into the individual tubes 3. In this case, for example, as shown in FIG. 4 (6), the flow flowing into the tube 3 in the vicinity of the refrigerant moving portion 23 moves as shown in FIG. The flow flowing into the tube 3 is formed as shown in (8) in FIG. 4 and moves to the vicinity of the opposite end in the stacking direction in the compartment 22 as shown in FIG.

Finally, the refrigerant flowing into each tube 3 rises toward the compartment 16 and joins in the compartment 16,
The combined refrigerant moves in the laminating direction as shown in FIG. 4 (9) and flows out of the heat exchanger 1 from the outlet 19. That is, in each of the centers and the routes on both sides thereof, an equal amount of the refrigerant flows through the tubes, and the temperature distribution becomes uniform.

The heat exchanger 1 shown in FIGS. 5 and 6 is also a double-tank type evaporator used for a vehicle, for example, and has tubes 2 and 3 arranged side by side in the ventilation direction. Corrugated fins 4 alternately stacked in a plurality of stages, end plates 5 and 5 arranged on both sides in the stacking direction, a tank 6 provided at one longitudinal end of the tubes 2 and 3, 1 and 3 is the same as the heat exchanger 1 shown in FIG. 1 or 3, but in the point that it is a three-pass type, It is different from the conventional heat exchanger 1. Hereinafter, the same components as those of the heat exchanger 1 shown in FIG. 1 and the like or FIG. 3 and the like are denoted by the same reference numerals and the description thereof will be omitted, and different configurations of the tanks 6 and 7 will be described.

The inside of the tank 6 has a partitioning portion 14 extending in the laminating direction (in the direction perpendicular to the white arrow in FIG. 5).
Are divided into compartments 15 and 16 arranged side by side in the ventilation direction, and the compartments 15 are divided into compartments 17 extending in the ventilation direction at substantially the center in the stacking direction.
It is partitioned into 5A and 15B. A refrigerant inlet 18 is provided on the bottom side of one end of the tank 6 in the stacking direction.
5 is provided. In this embodiment, a portion not connected to the tube 3 is isolated by the partition wall portion 20 extending in the ventilation direction, so that the refrigerant does not flow to this portion.

At the end of the tank 6 opposite to the side where the inlet 18 of the tank 6 is provided in the stacking direction, a refrigerant moving part which communicates with the picture chambers 15B and 16 and is capable of moving the refrigerant in the ventilation direction. 23 are provided. This refrigerant moving part 23 also forms the partition part 14 integrally with the tubular body 11,
It is formed by notching a part thereof, or the partition 14
May be formed by making one end in the stacking direction shorter than the end in the stacking direction of the tubular body 11 and inserting the partition portion 14 into the tubular body 11.

On the other hand, the tank 7 has a partition portion 1 whose interior extends in the stacking direction (perpendicular to the white arrow in FIG. 1).
4 and is partitioned into picture chambers 21 and 22 juxtaposed in the ventilation direction, and a coolant outlet 19 is provided on the upper surface side of one end portion in the stacking direction so as to communicate with the picture chamber 22. In this embodiment, a portion of the image chamber 21 that is not connected to the tube 2 is isolated by the partition wall portion 20 extending in the ventilation direction, so that the refrigerant does not flow to this portion.

The heat exchanger 1 having such a configuration performs a three-pass type flow as shown in FIG. Each path is a set of routes flowing through the plurality of tubes 2 and 3, and three points (the center and both sides) are selected and shown from among them.

That is, the refrigerant flowing from the inlet 18 into the compartment 15A of the tank 6 moves in the laminating direction to a portion connected to the tubes 2 as shown in (1) in FIG. Inflow. In this case, for example, the flow flowing into the tube 2 near the partition 20 as shown in FIG. 6 (2), and the space between the partition 17 and the partition 20 in the compartment 15A as shown in FIG. 6 and flows into the tube 2 located at the center thereof, and moves into the compartment 15A to the vicinity of the partition 17 in the stacking direction as shown in (4) in FIG. Is done.

Then, the refrigerant flowing into each tube 2 descends toward the compartment 21 and merges in the compartment 21.
The combined refrigerant is supplied to the partition 1 as shown in FIG.
After moving in the laminating direction along the tube 4 and reaching below the tube 2 having one end connected to the compartment 15B, it flows into the tube 2. In this case, for example, as shown in (6) in FIG. 6, the flow flowing into the tube 2 near the refrigerant moving portion 23,
As shown in FIG. 6 (7), the flow moves inside the compartment 21 between the partition 17 and the end in the stacking direction and flows into the tube 2 located at the center thereof. 21 is moved to the vicinity of the end in the stacking direction to form a flow flowing into the tube 2.

Further, the refrigerant flowing into each tube 2 rises toward the compartment 15B and merges in the compartment 15B. The merged refrigerant reaches the refrigerant moving section 23 as shown at (9) in FIG. It moves in the stacking direction along the partition part 14,
For the first time, the refrigerant moving portion 23 moves in the ventilation direction and makes a U-turn in the direction opposite to the stacking direction so far,
It flows into the picture chamber 16. Further, the refrigerant flowing into the compartment 16 moves in the stacking direction as shown in (10) in FIG.
Flow into individual tubes 3 individually. In this case, for example, as shown in FIG. 6 (11), the flow flowing into the tube 3 near the refrigerant moving portion 23 moves as shown in FIG. The flow flowing into the tube 3 is formed as shown in (13) in FIG. 6 and moves to the vicinity of the opposite end in the stacking direction in the compartment 16 as shown in FIG.

Finally, the refrigerant flowing into each of the tubes 3 descends toward the compartment 22 and joins in the compartment 22,
The combined refrigerant moves in the stacking direction as shown in (14) in FIG. 6 and flows out of the heat exchanger 1 from the outlet 19. That is, in each of the centers and the routes on both sides thereof, an equal amount of the refrigerant flows through the tubes, and the temperature distribution becomes uniform.

As described above, the heat exchanger 1 has an end in comparison with the conventional case where the compartment of the tank that is not connected to the predetermined inlet / outlet portion is communicated in the airflow direction and the refrigerant is moved in the entire compartment. A refrigerant moving unit 23 is provided outside the plate 5 in the stacking direction, and the refrigerant is moved in the ventilation direction only by the refrigerant moving unit 23 and U-turned in the stacking direction opposite to the flow in the stacking direction so far. According to the test results of the applicant, the bias of the refrigerant is reduced, and the temperature distribution of the heat exchanger is improved.

Further, according to the test results of the applicant, as shown in FIG. 7, the ratio of the area of the refrigerant moving portion 23 as viewed from the ventilation direction to the area as viewed from the laminating direction of each compartment is set to 0.1%.
The refrigerant moving part 23 is set to be in a range of 4 or more and 1.0 or less.
It has been found that when the area viewed from the ventilation direction is set to be equal to or smaller than the area viewed from the laminating direction of each compartment, satisfactory performance of the heat exchanger 1 can be derived.

Finally, the cylindrical body 11 constituting the tanks 6 and 7 has been illustrated and described as being composed of one member having an open side along the ventilation direction. However, the present invention is not necessarily limited to this. As shown, the first member 11a having a substantially flat plate shape, the side peripheral surfaces on both sides of the tank and the partition portion 13 are provided.
May be constituted by two members, that is, a substantially W-shaped second member 11b. As shown in FIG. 9, a first member 11a having a substantially flat plate shape and a substantially U-shaped second member 11c forming an upstream side peripheral surface of the tank 7 and an upstream portion of the partition portion are provided. , A substantially U-shaped third member 1 forming a downstream peripheral surface of the tank and a downstream portion of the partition portion
1d may be used.
Note that these members 11a, 11b, 11c, 11d
It is formed by extrusion or press molding. 1, 3 and 5, the coolant moving portion 23 is illustrated as being formed integrally with the tank 6 or 7, but is not necessarily limited thereto, and may be formed as a separate member from the tank 6 or 7. good.

[0046]

As described above, according to the present invention, each tank is divided into two compartments juxtaposed in the ventilation direction by the partition portion extending in the ventilation direction, and the movement of the refrigerant in the ventilation direction is restricted. At the same time, one of the tanks is provided at one end thereof in the stacking direction with a refrigerant moving portion that communicates between the compartments adjacent to the site, and the refrigerant is intensively moved only in the refrigerant moving portion in the ventilation direction. Since it is possible to move the heat exchanger in the opposite direction to the direction, according to the test results of the applicant so far, even in the heat exchanger of any path configuration, at least between the compartments adjacent in the ventilation direction The distribution of the refrigerant is less likely to be biased, and the temperature distribution can be improved.

Further, since the two tanks constituting the heat exchanger are formed separately from the tubes, it is possible to eliminate irregularities on the surface along the laminating direction of the tanks in forming the tanks. It is possible to reduce the passage resistance when the refrigerant moves in the lamination direction in the inside, to make the distribution of the refrigerant more uniform, and to further improve the temperature distribution.

Further, since the tank and the tube are formed separately, the degree of freedom in the shape of the tank, such as the dimension in the stacking direction, is increased. Therefore, the refrigerant moving portion can be formed integrally with the tank. Thus, unlike the case where the refrigerant moving portion is formed of a member separate from the tank, there is no danger of the refrigerant leaking from the joint portion, and the manufacturing cost is reduced.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a configuration example of a four-pass type double-tank heat exchanger according to the present invention.

FIG. 2 is an explanatory diagram showing a flow of a refrigerant flowing in the heat exchanger of FIG. 1;

FIG. 3 is a perspective view showing a configuration example of a two-pass type double tank heat exchanger according to the present invention.

FIG. 4 is an explanatory diagram showing a flow of a refrigerant flowing in the heat exchanger of FIG. 3;

FIG. 5 is a perspective view showing a configuration example of a three-pass type double-tank heat exchanger according to the present invention.

FIG. 6 is an explanatory diagram showing a flow of a refrigerant flowing in the heat exchanger of FIG. 5;

FIG. 7 is a characteristic diagram showing the relationship between the ratio of the area of the refrigerant flow path viewed from the lamination direction side of the compartment to the area of the refrigerant flow path viewed from the ventilation direction of the refrigerant moving unit and the heat exchange performance. It is.

FIG. 8 is an explanatory diagram showing a case where the cylindrical portion of the tank is constituted by two members.

FIG. 9 is an explanatory view showing a case where the cylindrical portion of the tank is constituted by three members.

FIG. 10 is an explanatory diagram showing a flow of a conventional standard four-pass double-tank heat exchanger.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Heat exchanger 2 Tube 3 Tube 4 Fin 6 Tank 7 Tank 14 Partition part 15 (15A, 15B) Painting room 16 (16A, 16B) Painting room 17 Partition part 18 Inlet part 19 Outlet part 21 Painting room 22 Painting room 23 Refrigerant moving part

Claims (5)

[Claims] 1. Two tanks, a plurality of tubes connected to both of these tanks and communicating between the tanks,
Fins that are alternately stacked with these tubes in multiple stages,
A refrigerant chamber provided in one or both of the tanks, wherein the inside of each of the tanks is partitioned by a partition extending in the laminating direction, and each of the tanks is provided with an image chamber arranged in the ventilation direction. In the heat exchanger, one of the tanks is located at one end of the stacking direction,
A heat exchanger provided with a refrigerant moving part that enables the refrigerant to move in the ventilation direction between the adjacent compartments. 2. A first tank and a second tank, and a plurality of tubes connected to both the first tank and the second tank to communicate the first tank and the second tank. A partition having a plurality of fins alternately stacked with these tubes and a refrigerant inlet / outlet provided in the first tank, wherein the insides of the first and second tanks extend in the stacking direction. In a heat exchanger provided with two compartments separated by a section and arranged side by side in the ventilation direction, an inlet / outlet portion of the refrigerant is formed at one end portion of the first tank on the lamination direction side, A heat exchanger, wherein a refrigerant moving portion that enables movement of the refrigerant between the adjacent compartments in the ventilation direction is provided at an end portion of the second tank opposite to the side where the entrance portion is formed. vessel. 3. A first tank and a second tank, and a plurality of tubes connected to both the first tank and the second tank to communicate the first tank and the second tank. A partition having a plurality of fins alternately stacked with these tubes and a refrigerant inlet / outlet provided in the first tank, wherein the insides of the first and second tanks extend in the stacking direction. A heat exchanger having two compartments separated by a section and arranged side by side in the ventilation direction, and dividing the compartment of the first tank into two by a partition extending in the ventilation direction. An inlet / outlet portion for the refrigerant is formed at one end of the first tank on the lamination direction side, and the adjoining portion of the first tank at an end opposite to the side where the inlet / outlet portion is formed is provided between the adjacent compartments. Cooling that can move the refrigerant in the ventilation direction Heat exchanger, characterized in that a mobile unit. 4. A first tank and a second tank, and a plurality of tubes connected to both the first tank and the second tank to communicate the first tank and the second tank. And a fin that is stacked in a plurality of stages alternately with these tubes, a refrigerant inlet provided in the first tank, and a refrigerant outlet provided in the second tank, The interior of each of the tanks is partitioned by a partition extending in the stacking direction, and includes two compartments arranged side by side in the ventilation direction, and a compartment communicating with the refrigerant inlet of the first tank, In a heat exchanger divided into two by a partition part extending in a ventilation direction, an inlet part of the refrigerant is formed at one end portion on the lamination direction side of the first tank, and the second tank is laminated. Outlet side of the refrigerant at one end of the The first tank is provided with a refrigerant moving portion which is capable of moving the refrigerant between the adjacent compartments in the ventilation direction at an end portion of the first tank opposite to the side where the entrance is formed. Heat exchanger. 5. A ratio of the area of the refrigerant passage viewed from the ventilation direction of the refrigerant moving portion to the area of the refrigerant flow passage viewed from the lamination direction side of the compartment is within a range of 100% or less and 40% or more. The heat exchanger according to claim 1, 2 or 3, wherein: