JPH04353397A - Heat exchanger - Google Patents

Abstract

PURPOSE:To permit the expanding of the diameters of inlet and outlet pipes easily when a tank is miniaturized. CONSTITUTION:An up-and-down partitioning member 26 dividing a tank 5 into upper and lower two parts, is interposed between a lower side tank member 20, connecting tube elements 1, and an upper side tank member, 21 having outlet and inlet pipes 3, 4 while a left-and-right partitioning member 37, partitioning a space defined between the upper tank member 21 and the up-and- down partitioning member 26 into a right tank unit 40 and a left tank unit 41, is arranged in the direction of the short side at the center of the space. In this constitution, the diameter of the outlet and inlet pipes 3, 4 can be expanded to the maximum limits thereof or the width of the short side of the tank 5.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat exchanger mainly used in a vehicle air conditioner.

0002

[Prior Art] A heat exchanger has a structure in which a tank is provided separately and connected to laminated tube elements, and the refrigerant flow is a counterflow type.
For example, the one disclosed in Japanese Utility Model Application Publication No. 63-154962 can be mentioned.

[0003] In this prior art, the tank is composed of an inlet tank plate, an outlet tank plate, and an end plate that closes the open sides of the inlet tank plate and the outlet tank plate and connects them by inserting laminated tube elements therein. was. The inlet tank plate and the outlet tank plate are provided on the inlet and outlet pipes for the heat exchange medium, and the partition part that partitions the inside of the tank is applied to the joint part of the inlet tank plate and the outlet tank plate, and the partition part is provided at the end of the tank plate. It had a structure in which it was in contact with a plate.

0004

SUMMARY OF THE INVENTION In recent years, in accordance with the demand for downsizing of vehicle air conditioners, there has been a demand for downsizing of heat exchangers. In order to miniaturize this heat exchanger, the recent trend is to make the tank smaller (reducing the width in the lateral direction). The diameter of the inlet and outlet pipes will be reduced. When the diameter of the inlet and outlet pipes is reduced, passage resistance increases and the performance of the heat exchanger deteriorates. Therefore, there is a demand for a heat exchanger having a structure in which the diameter of the inlet and outlet pipes is not reduced even if the width of the tank is reduced in the lateral direction.

In this regard, in the conventional example described above, even if the diameter of the inlet/outlet pipe is expanded beyond the width of the inlet tank plate and the outlet tank plate by shifting the position of the partition, the partition will not come into contact with the end plate. Because of this structure, the partition part hits the inserted tube element, and the problem is that the partition part cannot currently be changed and the diameter of the inlet/outlet pipe cannot be expanded.

[0006] Therefore, in view of the above problems, the present invention solves the following problems:
To provide a counterflow type heat exchanger which allows the diameter of an inlet/outlet pipe to be easily expanded even if the tank is downsized.

[0007]

[Means for Solving the Problems] In order to achieve the above object, a heat exchanger according to the present invention includes a plurality of tube elements having substantially U-shaped heat exchange medium passages stacked in multiple stages with fins interposed therebetween. In a heat exchanger comprising a tank having an inlet/outlet pipe for a heat exchange medium connected to an inlet/outlet of stacked tube elements, the tank includes a lower tank member connecting the tube elements, and an upper tank member having an inlet/outlet pipe. The lower tank member and the upper tank member are joined to each other by interposing an upper and lower partition part that divides the tank into upper and lower parts, and the space defined between the upper tank member and the upper and lower partition part is shortened. Left and right partitions are provided in the hand direction to divide the tank into a right tank part that communicates with one inlet/outlet pipe and a left tank part that communicates with the other inlet/outlet pipe, and a section is defined between the lower tank member and the upper and lower partition parts. A front and rear partition is provided in the longitudinal direction to divide the space into a front tank part and a rear tank part, and one communication hole is formed in the upper and lower partition parts to separate the right tank part from the front tank part or the rear tank part. At the same time, a communication hole is formed in the upper and lower partition parts to communicate the left tank part with the other front tank part or rear tank part which is not connected to the right tank part. be.

[0008]

[Operation] Therefore, the tank has a two-layer structure divided into upper and lower parts, the upper space is divided into a right tank part and a left tank part, and the lower space is divided into a front tank part and a rear tank part, Since the left and right tank parts and the front and rear tank parts are configured to communicate with each other through communication holes, the diameter of the inlet/outlet pipe provided in the right tank part and the left tank part must be expanded within the range of the width of the tank. This allows the above problem to be solved.

[0009]

Embodiments Hereinafter, embodiments of the present invention will be explained with reference to the drawings.

In FIG. 1, the heat exchanger has tube elements 1 and fins 2 alternately stacked in multiple stages, and
A tank 5 having inlet and outlet pipes 3 and 4 for heat exchange medium is connected and assembled to one end side of the stacked tube elements 1.

The tube element 1 has a substantially rectangular shape as shown in FIG. 2, and has a molded plate 7 as described below.
It is constructed by joining two sheets together in the middle.

The molded plate 7 is made of, for example, aluminum or an aluminum alloy, and is molded by pressing, and has a recess 8 for forming the entrance/exit at one end in the longitudinal direction.
, 9 are curved, and a projection 10 extends from between the entrance/exit forming recesses 8, 9 toward the other end side. A substantially U-shaped heat exchange medium passage forming bulge 11 is formed in a bulge. Moreover, on the other end side of this molded plate 7,
Tube element abutting portions 12 for defining the distance between the tube elements are formed to protrude outward.

The tube element 1 is constructed by joining two molded plates 7 in the middle, and on one end thereof, a pair of entrances and exits 15 and 16 are formed from opposing entrance and exit forming recesses 8 and 9. Inside, a substantially U-shaped heat exchange medium passage 17 is formed from the opposing heat exchange medium passage forming bulges 11, and the inlet/outlet ports 15, 16
are communicated via a heat exchange medium passage 17.

The tube elements 1 are stacked in multiple stages with adjacent tube element abutting portions 12 on the other end abutting each other, and fins are inserted in the gaps between the tube elements 1 and the inlet/outlet ports 15 of each tube element 1. , 16 are inserted into the tank 5 described below.

The tank 5, as shown in FIGS. 1 and 3,
It is constructed by joining a lower tank member 20 and an upper tank member 21, and caps for closing the openings are attached to both ends thereof.

The lower tank member 20 is formed by extrusion molding, for example, and is provided with joining edges 25 on both edges, and has an upper and lower partition part 26 formed on the upper side to partition the tank into upper and lower parts. A space defined between the upper and lower partition parts 26 and the bottom surface 27 is partitioned in the longitudinal direction, and a front tank part 28
A front and rear partition section 30 is provided to partition the tank section into a rear tank section passage 29 and a rear tank section passage 29. Further, the above-mentioned upper and lower partition portions 26 are provided with communication ports for communicating the front tank portion 28 and the rear tank portion 29 with a right tank portion 40 and a left tank 41, respectively, which are defined between the upper tank member 21 described below. Holes 32 and 33 are formed, and a plurality of tube insertion holes 34 and 35 are formed at a predetermined distance in the bottom surface 27 for inserting the entrances and exits 15 and 16 of the stacked tube elements 1. .

The upper tank member 21 has an inlet/outlet pipe 3,
4 is formed in a protruding manner and has a substantially U-shape, and is joined to the lower tank member 20 by engaging the joining edge 25 of the lower tank member 20 at both edges, and at the center in the short direction between them. The space defined between the upper and lower partitions 26 of the lower tank member 20 is assembled with the inlet/outlet tank partition 37 in between, and the left and right partitions 37 separate the right tank part 40 and the left tank part 41.
It is now divided into This right tank part 4
0 and the left tank part 41 are connected to the inlet and outlet pipes 3 and 4, respectively. The left and right partitions 37 are fixed to the upper tank member 21 by engaging their engaging protrusions 37a into engagement holes 43 formed in the upper tank member 21.

The tank 5 having the above structure has a lower tank member 2.
0 has a two-layer structure in which the internal space is divided into upper and lower halves by the upper and lower partitions 26, and the upper space is divided into the right tank part 40 and the left tank part 41 by the left and right partitions 37 arranged in the widthwise direction at the center. The lower space is divided into a front tank part 28 and a rear tank part 29 by a front and rear partition part 30 arranged in the central longitudinal direction, and the right tank part 40 is connected to the front tank through a communication hole 32. In part 28,
The left tank section 41 connects to the rear tank section 2 through the communication hole 33.
9, respectively.

In the heat exchanger having such a structure, the heat exchange medium flowing into the right side tank section 40 from one of the inlet/outlet pipes 3 is
It reaches the front tank part 28, from there it flows through the heat exchange medium passage 17 of each tube element 1, during which it exchanges heat with the outside air, reaches the rear tank part 29, and is collected in the left tank part 41. , which is discharged from the other inlet/outlet pipe 4 (or follows the opposite route).

However, the tank 5 of this heat exchanger has a two-layer structure in which the tank is divided into upper and lower halves by the upper and lower partitions 26, and the space above the tank is divided into left and right partitions in the short direction of the center of the tank. 37 into a right tank section 40 and a left tank section 41, the right tank section 4
The inlet/outlet pipes 3, 4, which are provided in communication with the tank 5 and the left tank part 41, are not restricted by partitions, and can be expanded in diameter by maximizing the width in the transverse direction of the tank 5. ing.

Next, a second embodiment of the heat exchanger according to the present invention will be described with reference to FIGS. 4 to 8. However, those having the same configuration as the heat exchanger of the first embodiment described above will be given the same reference numerals and the explanation thereof will be omitted, and only the different points will be explained below.

This second embodiment differs from the first embodiment described above in that the tank 5 can be press-molded.

The tank 5 is constructed by joining an upper tank member 50 and a lower tank member 51, and there is a space between the upper tank member 50 and the lower tank member 51 that allows the interior of the tank to be vertically moved. An upper and lower partition section 52 is interposed to divide the frame into two.

The upper tank member 50 has an inlet/outlet pipe 3,
4 is formed protrudingly, and a joining edge 53 is provided on the periphery, and in the center, a left and right partition part 56 that partitions the space above the tank into a right tank part 54 and a left tank part 55 faces inward. (See Figures 4 to 6)
.

The lower tank member 51 divides the space below the tank in the central longitudinal direction into a front tank part 58 and a rear tank part 5.
A front and rear partition section 60 is formed to be bent inward, and a joint edge 61 is provided on the periphery, and the bottom surface 62 has openings 15 and 16 of the stacked tube elements 1 inserted therein. A plurality of insertion holes 63 and 64 are formed at a predetermined distance apart (see FIGS. 4 to 6 and 7).

[0026] The upper and lower partitions 52 divide the inside of the tank into two
The front tank part 58 is a flat plate-shaped part that separates the
Communication holes 67 and 68 are provided to communicate the rear tank section 59 and the right tank section 54 and the left tank section 55, respectively (see FIGS. 6 and 8).

The tank 5 having the above structure has an upper tank member 5
0 and the lower tank member 51 has a two-layer structure in which the internal space is divided into two vertically by the upper and lower partitions 52, and the upper space is divided into the right tank part 54 and the left tank by the left and right partitions 56. The lower space is divided from the central longitudinal direction into a front tank part 58 and a rear tank part 59 by a front and rear partition part 60, and the right tank part 54 and the left tank part 5
5 communicates with the front tank part 58 and the rear tank part 59 through communication holes 67 and 68, respectively. Further, the inlet/outlet pipes 3 and 4 communicate with a right tank section 54 and a left tank section 55, respectively.

In the heat exchanger having such a structure, the heat exchange medium flowing into the right side tank portion 54 from one of the inlet and outlet pipes 3 is
It reaches the front tank part 58, from there it flows through the heat exchange medium passage 17 of each tube element 1, during which it exchanges heat with the outside air, reaches the rear tank part 59, and is collected in the left tank part 55. , which is discharged from the other inlet/outlet pipe 4 (or follows the opposite route).

However, like the first embodiment, the tank 5 of this heat exchanger has a two-layer structure in which the tank is divided into upper and lower halves with an upper and lower partition 52 interposed therebetween, and the space above the tank is divided into upper and lower halves. Since the tank is divided into a right side tank part 54 and a left side tank part 55 via a left and right partition part 56 in the central lateral direction of the tank, an entrance/exit provided in communication with the right side tank part 54 and left side tank part 55 is provided. The pipes 3 and 4 are not restricted by partitions, and can be expanded in diameter by maximizing the width in the transverse direction of the center of the tank 5.

[0030]

[Effects of the Invention] As described above, according to the present invention,
The tank has a two-layer structure divided into upper and lower halves by the upper and lower partitions, and the space above the tank is divided into the right tank part and the left tank part by the left and right partitions, so that the right tank part and The diameter of the inlet/outlet pipe provided in communication with the left tank portion can be expanded to maximize the width in the transverse direction of the tank, thereby reducing the passage resistance of the inlet/outlet pipe.

[Brief explanation of drawings]

FIG. 1 is a perspective view of a heat exchanger according to a first embodiment.

FIG. 2 is a perspective view of a tube element.

FIG. 3 is a perspective view of a lower tank member, etc. used in the heat exchanger according to the first embodiment.

FIG. 4 is a perspective view of a heat exchanger according to a second embodiment.

FIG. 5 is a plan view of a tank of the heat exchanger same as above.

FIG. 6 is a sectional view taken along line AA in FIG. 4;

FIG. 7 is a plan view of a lower tank member used in the above heat exchanger.

FIG. 8 is a diagram showing a state in which the upper tank member is removed from the tank of the heat exchanger according to the above.

[Explanation of symbols]

1 Tube element 2 Fin 3, 4 Entrance/exit pipe 5 Tank 15, 16 Entrance/exit 17 Heat exchange medium passage 20, 51 Lower tank member 21,50 Upper tank member 26, 52 Upper and lower partitions 28, 58 Front tank part 29,59 Rear tank part 30, 60 Front and rear partitions 37, 56 Left and right partitions 40, 50 Right side tank part 41,55 Left side tank part

Claims (1)

[Claims] Claim 1: Tube elements having substantially U-shaped heat exchange medium passages are stacked in multiple stages with fins interposed therebetween, and a tank provided with an inlet/outlet pipe for heat exchange medium is connected to an inlet/outlet of the stacked tube elements. In the heat exchanger consisting of While joining the member and the upper tank member,
Left and right partitions are provided in the width direction of the space defined between the upper tank member and the upper and lower partitions, and a right tank part communicates with one inlet/outlet pipe and a left tank part communicates with the other inlet/outlet pipe. The space defined between the lower tank member and the upper and lower partitions is divided into a front tank part and a rear tank part by providing a front and rear partition part in the longitudinal direction, and one of the upper and lower partitions is divided into a front tank part and a rear tank part. A communication hole is formed in the upper and lower partitions to communicate the right tank section with either the front tank section or the rear tank section, and the other communication hole is formed in the upper and lower partitions to communicate the left tank section with the right tank section. A heat exchanger characterized in that the heat exchanger is connected to the other front tank part or rear tank part which is not connected to the other front tank part or rear tank part.