JP2003232600A - Pipe structure of heat exchanger - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a pipe structure of a heat exchanger for improving the assembling efficiency of a hose to a pipe part. <P>SOLUTION: This pipe structure of the heat exchanger has pipe parts 111, 121 for a inserting houses 10 from the counterpart to let a fluid for heat exchange flow in a body part 101 or flow out to the outside of the body part 101. The surfaces in areas A of the pipe parts 111, 121 for inserting the hoses 10 are provided with groove parts 112 for decreasing the contact area with the inner surface of the hoses 10. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat exchanger pipe structure, and is suitable for application to, for example, a resin tank radiator for vehicles.

[0002]

2. Description of the Related Art As a conventional heat exchanger pipe structure,
It is known that the heat exchanger main body is provided with a cylindrical pipe portion that allows a heat exchange fluid to flow in or out, and a rubber hose of a counterpart device is inserted and connected thereto.

The hardness of the hose is determined in consideration of the vibration of the counterpart equipment, the pressure of the fluid, etc. so that the required strength can be obtained.

[0004]

However, depending on the hardness of the hose, the insertion force when the hose is inserted into the pipe portion becomes large, and the assembling property is deteriorated.

In view of the above problems, an object of the present invention is to provide a pipe structure of a heat exchanger which can improve the assembling property of a hose to a pipe portion.

[0006]

The present invention employs the following technical means in order to achieve the above object.

According to the first aspect of the invention, the hose (10) from the other side is inserted to allow the heat exchange fluid to flow into the main body (101) or to flow out of the main body (101). A pipe structure of a heat exchanger having pipe parts (111, 121), wherein a surface in a region (A) into which a hose (10) of the pipe parts (111, 121) is inserted is
It is characterized in that a groove (112) is provided to reduce the contact area with the inner surface of the hose (10).

As a result, the frictional resistance when inserting the hose (10) into the pipe portion (111, 121) can be reduced, so that the insertion force is reduced and the pipe portion (111, 121) is reduced.
The assembling property of the hose (10) to the hose can be improved.

According to a second aspect of the invention, the pipe portion (1
A protruding portion (114) protruding to the outer diameter side is formed on the outer periphery of the tip end portion (113) of the groove portion (1).
12) is characterized in that it is provided on the protrusion (114).

Usually, in the pipe portion (111, 121) provided with the protruding portion (114), the frictional resistance at the time of inserting the hose (10) is the largest, but the groove portion (112) is provided here. As a result, the frictional resistance can be effectively reduced and the assembling property can be improved.

If the plurality of groove portions (112) are provided in the outer peripheral direction of the pipe portions (111, 121), the pipe portions (111, 1) can be provided.
The frictional resistance can be reduced over the entire circumference of 21), and the assemblability can be effectively improved.

If the groove portion (112) is provided so as to extend in the longitudinal direction of the pipe portion (111, 121), the pipe portion (111) in the groove portion (112) may be provided. , 121) in the circumferential direction of the hose (10) can be shortened, and the inner diameter side end of the hose (10) is less likely to be caught in the peripheral part, which leads to improvement in insertability.

When the pipe portion (111) is made of a resin material, the groove portion (112) and the pipe portions (111, 121) are formed at the same time. Can be easily formed.

The reference numerals in parentheses of the above-mentioned means indicate the correspondence with the concrete means described in the embodiments described later.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION (First Embodiment) A first embodiment of the present invention is shown in FIGS. 1st Embodiment applies this invention to the pipe parts 111 and 121 of the resin tank radiator 100 for vehicles mounted in the front in an engine room.

Resin tank radiator (hereinafter radiator)
As shown in FIG. 1, 100 is a so-called vertical flow type in which the cooling liquid flowing in the tube 132 of the core portion 130 goes from the upper side to the lower side in the figure, and the core portion 130, the upper tank 110, It consists of a lower tank 120.

The core portion 130 comprises a fin 131, a tube 132, a side plate 133 and a core plate 134, and these members are made of an aluminum alloy having excellent strength resistance and corrosion resistance.

The fins 131 formed in a corrugated shape from a thin band plate material and the tubes 132 having a flat cross section are alternately arranged in the left-right direction, and a reinforcing member is provided further outside the left and right outermost fins 131. Is provided as a side plate 133. The upper and lower longitudinal ends of each tube 132 are fitted into burring holes provided in the core plate 134, and these are brazed together to form the core portion 130.

Upper tank 110, lower tank 120
Is made of a resin material such as a nylon material containing glass fibers, which has excellent heat resistance and strength resistance, and has a substantially U-shaped cross section, and has an opening on the side facing the core plate 134. Forming a container body having.

A not-shown seal member (packing) is interposed between the outer peripheral portion of the opening of each of the tanks 110 and 120 and the outer peripheral portion of the core plate 134 so that the core portion 130 of the both tanks 110 and 120 is inserted. Is mechanically joined to. Both tanks 110 and 120 and the core portion 1
The body portion 101 of the radiator 100 is formed by 30.

The upper tank 110 is integrally formed with a pipe portion (inlet pipe) 111, a water injection port 116 and a mounting portion 117, and the lower tank 120 is provided with a pipe portion (outlet pipe) 121 and a mounting portion 122. It is molded integrally. Each of the pipe parts 111 and 121 has a structure shown in FIG.
A hose 10 indicated by a two-dot chain line therein is inserted, cooling water from a vehicle engine (not shown) flows into the upper tank 110 and the core portion 130 from the pipe portion 111, and is cooled by heat exchange with external air in the core portion 130. . afterwards,
The cooling water flows out from the pipe portion 121 of the lower tank 120 to the outside and returns to the engine again.

In the present invention, both tanks 110, 12 are
The structure of the zero pipe parts 111 and 121 is characterized, and the details thereof will be described below. Incidentally, the pipe part 11
In Nos. 1 and 121, the upper tank 110 and the lower tank 120 have the same structure, and the structure will be described below using the pipe portion 111 on the upper tank 110 side.

As shown in FIG. 2, the pipe portion 111 has a cylindrical shape, and the hose 10 is provided on the outer periphery of the tip portion 113.
A protrusion 114 that protrudes toward the outer diameter side is provided to prevent the retainer from being inserted after insertion. Further, a stopper 115 that partially protrudes toward the outer diameter side is provided on the side opposite to the front end so that the region where the hose 10 is inserted is A.

A groove 112 for reducing the contact area with the inner surface of the hose 10 is provided on the surface in the area A into which the hose 10 is inserted. Specifically, here, the groove portion 112 is provided in the protruding portion 114 of the tip portion 113 so that the depth of the groove coincides with the original surface of the pipe portion 111.

As a result, the hose 10 is connected to the pipe portion 111.
Since the frictional resistance at the time of insertion into the pipe can be reduced, the insertion force can be reduced and the assembling property of the hose 10 to the pipe portion 111 can be improved.

Usually, in the pipe portion 111 provided with the protruding portion 114 for preventing the hose 10 from coming off,
The frictional resistance at the time of inserting the hose 10 is maximized at this portion, but since the groove portion 112 is provided here, the frictional resistance can be effectively reduced and the assembling property can be improved.

Further, by providing a plurality of groove portions 112 in the circumferential direction of the pipe portion 111, it is possible to reduce frictional resistance over the entire circumference and effectively improve the assembling property.

Furthermore, since the pipe portion 111 is made of a resin material (integrally molded with the resin upper tank 110), for example, a resin mold is movable in the longitudinal direction of the pipe portion 111. The groove portion 112 can be easily formed by a forceful die. The groove 112 can be formed even if the resin mold is a split mold.

(Other Embodiments) Another embodiment of the present invention is shown in FIG. In this embodiment, the groove 11
In the insertion area A of the hose 10, 2 is provided not only in the protruding portion 114 but also in other portions. That is,
In the hose insertion area A, the hose 10 and the pipe portion 111
The seal area B for ensuring the seal with is further added to the area. More specifically, a second groove portion 112a that is deeply dug in the groove portion 112 described in the first embodiment and extends from the tip of the pipe portion 111 to the seal region B on the side opposite to the tip portion is provided.

As a result, the frictional resistance when the hose 10 is inserted can be further reduced and the insertability can be improved.

In addition, the second groove portion 112a is connected to the pipe portion 11
The second groove portion 1 by extending in the longitudinal direction of the first groove portion 1.
Since the circumferential length of the pipe portion 111 in 12a can be shortened, the inner diameter side tip portion of the hose 10 is less likely to be caught in the peripheral portion, which leads to improvement in insertability.

In the first embodiment, the radiator 100 is used as the heat exchanger, and the pipe portion 11 thereof is used.
1 and 121 have been described as an example, the present invention is not limited to this and can be similarly applied to other oil coolers, intercoolers, heater cores, and other pipe parts.

Further, the material of the pipe portion 111 is not limited to the resin material, and may be a metal material. In this case, the groove 112 can be formed by cutting or pressing.

[Brief description of drawings]

FIG. 1 is an external perspective view showing an entire radiator according to a first embodiment of the present invention.

FIG. 2 is an external perspective view showing a pipe section in FIG.

3A is a cross-sectional view showing a pipe portion according to another embodiment, and FIG. 3B is a view from the direction C in FIG. 3A.

[Explanation of symbols]

100 radiator (heat exchanger) 101 main body 111, 121 Pipe section 112 groove 113 tip 114 protrusion

Claims (5)

[Claims] 1. A pipe part (1) into which a hose (10) from the other side is inserted to allow a heat exchange fluid to flow into or out of the main body (101).
A pipe structure of a heat exchanger having a hose (10) of the pipe part (111, 121).
The hose (1
The pipe structure of the heat exchanger is provided with a groove (112) for reducing the contact area with the inner surface of (0). 2. A projecting portion (11) projecting to an outer diameter side is provided on an outer circumference of a tip portion (113) of the pipe portion (111, 121).
4) is formed, The groove part (112) is provided in the said protrusion part (114), The pipe structure of the heat exchanger of Claim 1 characterized by the above-mentioned. 3. The heat exchanger according to claim 1, wherein a plurality of the groove portions (112) are provided in an outer peripheral direction of the pipe portion (111, 121). Pipe structure. 4. The heat exchange according to claim 1, wherein the groove portion (112) is provided so as to extend in a longitudinal direction of the pipe portion (111, 121). Pipe structure. 5. The pipe structure of a heat exchanger according to claim 1, wherein the pipe portion (111) is made of a resin material.