JP2003336994A - Partition structure of resin tank for radiator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a partition structure of a resin tank for a radiator capable of restricting the short-cut amount of flow rate in a pipe without using a seal material such as a packing between a partition plate and an end plate. <P>SOLUTION: A tank arranged above and below a core part is provided with one or more partition plates. The plate partitions the longitudinal direction of the tank and provides the passage of cooling water flowing in the core part. Two plate members which respectively having an outer curved surface of same circular cross section are formed along the overall length of the lower end part of the partition plate on the lower end part of the partition plate. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a radiator resin tank partition structure for partitioning an internal flow path of a resin tank for a radiator so that the cooling water flow path becomes long by a plurality of turns.

[0002]

2. Description of the Related Art Conventionally, as shown in FIGS. 3 to 5, a core made of resin is disposed above and below a core 2 composed of a tube 2a and a corrugated fin 2b constituting a heat exchanger of a radiator 1, with end plates 3 and 4 interposed therebetween. Some have tanks 5 and 6 attached. Cooling water is passed through the core 2 from the upper tank 5 mounted above the core 2 to the lower tank 6 mounted below the core 2.

In this case, the tank 5 and / or the tank 6
The internal flow path of the cooling water is formed by a plurality of turns such as 2 passes (1 turn) shown in FIG. 3, 3 passes (2 turns) shown in FIG. 4 and 4 passes (3 turns) shown in FIG. The core 2 is moved in and out a plurality of times between the inlet portion 7 and the cooling water outlet portion 8 and the intermediate partition plates 5a, 5b, 5c, 5d, 6b, 6c are provided at appropriate places so that the cooling water flow path becomes long. There is.

In this case, the structure for partitioning the resin tank for the radiator is, for example, in the partitioning of the upper tank 5, as shown in FIGS. 6 and 7, the longitudinal direction inside the tank 5 is the partition plate 5a (or 5b, 5c, 5d) may partition at one or more places, and the cooling water may be turned a required number of times to pass through the core to lengthen the cooling water flow path.

In such a case, the partitioning inside the tank is performed by assembling the partition plates 5a (or 5b, 5c, 5d) (FIG. 6A), and the cross section AA (FIG. 6B) of the upper tank 5. ))
Further, as shown in the enlarged bottom end of the partition (FIG. 7), the space between the bottom end of the partition plate 5a (or 5b, 5c, 5d) and the end plate 3 is the size required for the tank assembly. Since it is necessary to secure a clearance as a clearance, there is a clearance and it cannot be completely partitioned. This also applies to the case of partitioning the lower tank 6.

[Problem] In such a conventional partition structure, the cooling water may be short-cut from the formed gap, and the cooling performance may be deteriorated. When the flow rate of cooling water for vehicles is sufficiently secured, the shortcut amount from the gap is relatively negligible, but the flow rate of cooling water per unit time is the same as for industrial equipment. If there are few, the shortcut amount cannot be ignored. Usually, in order to reduce the gap amount,
The shape of the partition plate is formed according to the shape of the end plates to be combined. However, in the case of a metal tank, the gap can be considerably reduced by the actual material matching process, but in the case of a resin tank, the tanks 5 and 6 are clamped after the O-ring 9 is sandwiched between the end plates 3 and 4. Since it is assembled, the gap amount becomes larger than that of a metal tank.

[0007]

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems in the prior art, and a technical problem specifically set to solve this is a partition plate and an end plate. An object of the present invention is to provide a partition structure for a resin tank for a radiator, which can regulate a shortcut flow amount in a pipe without using a sealing material such as packing between the plate and the plate.

[0008]

[Means for Solving the Problems] A partition structure for a radiator resin tank according to claim 1 of the present invention as a concretely configured means capable of effectively solving the above-mentioned problems is provided above and below a core portion. The tank is partitioned in the longitudinal direction, and at least one partition plate that defines the flow path of the cooling water flowing to the core part is provided, and the lower end part of this partition plate is evenly distributed over the entire length of the lower end part of this partition plate. It is characterized in that two plate-like members having an outer curved surface of a circular arc-shaped cross section are formed. Therefore, in assembling the partition plate, the lower end portion can be easily brought into contact with the end plate, and the plate-like member formed at the lower end portion is bent at the time of the contact so that the degree of close contact can be further strengthened. You can easily prevent the shortcut of cooling water.

According to a second aspect of the present invention, there is provided a radiator resin tank partitioning structure in which at least one sheet is provided above and below the core part to partition the longitudinal direction inside the tank to define a flow path of cooling water flowing to the core part. The partition plate is provided, and the basic cross-sectional shape is formed in an arc shape over the entire length of the lower end portion of this partition plate at the lower end portion of this partition plate, and a groove of a predetermined width and predetermined depth is carved in the center portion. Thus, two plate-shaped members are formed. Therefore, when the partition plate is assembled, the lower end portion can be easily brought into contact with the end plate, and even if the lower end portion is brought into contact with the end plate, the plate-shaped member formed at the lower end portion is bent and the degree of close contact is further improved. It makes it stronger and can easily prevent shortcuts of cooling water.

Further, in the inner partition structure of the resin tank for radiator according to the third aspect, the lower end portion of the partition plate is hung below the surface of the end plate so that the lower end portion of the partition plate and the end plate are separated from each other. It is characterized in that they are formed so as to overlap in position. Therefore, when the partition plate is assembled, the lower end of the partition plate and the surface of the end plate come into close contact with each other to prevent a shortcut of the cooling water.

Further, in the inner partition structure of the radiator resin tank according to the fourth aspect, the depth of the groove 5g formed in the lower end portion of the partition plate is determined by the difference between the lowest portion and the rearmost portion of the end plate 3. It is characterized by being formed deep. Therefore, when the partition plate is assembled, the lower end portion of the partition plate is easily bent, so that the close contact between the lower end portion of the partition plate and the end plate surface is effectively increased, and the shortcut of the cooling water is prevented.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be specifically described below in the case of an upper tank. If the upper tank and the lower tank are turned upside down, they have the same structure except the position of the partition plate. Therefore, in the case of the lower tank, the same result can be obtained by reversing the direction of the upper tank. Further, the same parts as those of the conventional technique are designated by the same reference numerals and the description thereof will be omitted. However, this embodiment is specifically described for better understanding of the gist of the invention, and does not limit the content of the invention unless otherwise specified.

The partition plate 5e provided inside the tank 5 is
As shown in FIGS. 1 and 2, it is formed in the following shape.
The lower end of the partition plate 5e has a basic cross-sectional shape formed in a part of a circle, that is, an arc shape, and a groove 5g having a predetermined width is formed in the center thereof.
Of the thin plate member 5f, 5f (hereinafter, simply referred to as the lower end portion) having the outer curved surface of a uniform arc-shaped cross section at the lower end portion over the entire length of the lower end portion of the partition plate. 5f, 5f) is formed. This lower end 5f, 5
The height of f (that is, the depth of the groove 5g) is formed to be larger than the difference between the lowest portion and the rearmost portion of the end plate 3 (the groove 5g is deep).

The positions of the lower end portions 5f and 5f of the partition plate 5e are set so as to hang downward from the surface of the end plate so that they overlap, and when the tank 5 is assembled to the core portion 2, the partition plate 5e The lower ends 5f, 5f come into contact with an inclined surface or a curved surface formed on the end plate 3 and bend inward along the surface of the end plate 3,
The lower ends 5f, 5f of the partition plate 5e and the upper surface of the end plate 3 are in close contact with each other to prevent a shortcut of cooling water.

Therefore, depending on the structure of the partition plate 5e,
The inside of the tank can be shielded without using a special sealing material. However, since the partition plate 5e is not provided between the lower end of the inner wall and the O-ring sealing surface, it is not possible to seal between the lower end of the inner wall and the O-ring surface. Occurs, but
Since the cross-sectional area surrounded by the inner wall of the tank 5 and the end plate 3 is very small, the amount of leakage can be as small as almost no problem.

In the case of a resin tank, the partition plate 5
Since e is molded integrally with the tank body and no other O-ring is added, the cost is the same as the conventional product, and the die structure does not change in the drawing direction, so groove processing cost is added at best. There is no significant change in mold cost. Furthermore, the lower end of the partition plate 5e is pressed against the end plate 3 to be deformed to block the flow of the cooling water. However, in the case of resin, the deformed portion gradually changes its shape due to the creep of the resin, unlike metal. Since it fits in, there is an advantage that it is not necessary to worry about the stress at the time of adhesion.

[0017]

As described above, in the inner partition structure of the resin tank for radiator according to the first aspect, the lower end portion can be easily brought into contact with the end plate when the partition plate is assembled. The plate-shaped member formed on the upper part is bent, and the degree of close contact is strengthened to be assembled, so that the shortcut of the cooling water can be easily prevented.

Further, in the structure for partitioning the radiator resin tank according to the second aspect, the lower end portion can be easily brought into contact with the end plate when the partition plate is assembled, and even if the lower end portion is brought into contact with the end plate. The plate-shaped member formed at the lower end portion bends to strengthen the degree of close contact, and a shortcut of cooling water can be easily prevented.

Further, in the partition structure of the radiator resin tank according to the third aspect, when the partition plate is assembled, the lower end portion of the partition plate and the end plate surface are in close contact with each other to prevent a shortcut of the cooling water. it can.

Further, in the structure for partitioning the radiator resin tank according to the fourth aspect, the lower end of the partition plate is easily bent when the partition plate is assembled, so that the adhesion between the lower end of the partition plate and the end plate surface is improved. It can effectively enhance and prevent the shortcut of cooling water.

[Brief description of drawings]

FIG. 1 is a partially enlarged cross-sectional explanatory view showing a partition structure of a resin tank for a radiator according to an embodiment of the present invention, (A) is a front cross-sectional explanatory view, and (B) is a BB of (A).
It is a side surface explanatory drawing shown in the position of an arrow.

FIG. 2 is an enlarged cross-sectional explanatory view showing a tip portion of the partition plate according to the embodiment of the present invention, (A) showing a state before assembly,
(B) is a state after assembly.

FIG. 3 is a front view showing a conventional two-pass structure radiator.

FIG. 4 is a front view showing a conventional radiator having a three-pass structure.

FIG. 5 is a front view showing a conventional 4-pass radiator.

6A and 6B are partial cross-sectional explanatory views showing a conventional partition structure of a resin tank for a radiator, in which FIG. 6A is a front cross-sectional explanatory view and FIG. 6B is a side view taken along the line BB in FIG. FIG.

FIG. 7 is an enlarged cross-sectional explanatory view showing a tip portion of a conventional partition plate.

[Explanation of symbols]

1 radiator 2 core parts 2a tube 2b corrugated fin 3,4 End plate 5,6 tank Partition plates 5a, 5b, 5c, 5d, 5e, 6b, 6c 5f lower end 5g groove 7 Cooling water inlet 8 Cooling water outlet 9 O-ring

Claims (4)

[Claims] 1. A tank provided above and below a core part is provided with one or more partition plates for partitioning a longitudinal direction to define a flow path of cooling water flowing to the core part, and a lower end part of the partition plate.
A partition structure for a resin tank for a radiator, characterized in that two plate members having an outer curved surface with a uniform arc-shaped cross section are formed over the entire length of the lower end portion of the partition plate. 2. A tank provided above and below the core part is provided with one or more partition plates for partitioning a longitudinal direction and defining a flow path of cooling water flowing to the core part, and a lower end part of the partition plate.
The basic cross-sectional shape is formed in an arc shape over the entire length of the lower end portion of this partition plate, and a groove having a predetermined width and a predetermined depth is carved in the central portion to form two plate-shaped members. The partition structure of the resin tank for the radiator. 3. A lower end portion of the partition plate is hung below a surface of an end plate so that the lower end portion of the partition plate and the end plate are overlapped with each other. The partition structure of the resin tank for radiator according to 1 or 2. 4. The radiator according to claim 3, wherein the groove 5g formed in the lower end portion of the partition plate has a depth deeper than the difference between the lowest portion and the rearmost portion of the end plate 3. Partition structure for resin tanks.