JP4679717B2 - Heat exchanger - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a heat exchanger that includes a tube that circulates a medium and a core that includes fins attached to the tube, and a tank to which an end of the tube is connected, and performs heat exchange of the medium by heat transmitted to the core.
[0002]
[Prior art]
In general, a heat exchanger such as a condenser or an evaporator in a refrigeration cycle is configured by alternately stacking a plurality of tubes and a plurality of fins to form a core, and connecting an end of the tube to a tank. The medium is taken into the inside from an inlet provided in the tank, passes through the tube while exchanging heat by heat transmitted to the core, and then discharged to the outside from an outlet provided in the tank.
[0003]
Examples of this type of heat exchanger tank include, for example, JP-A-5-302794, JP-A-10-132485, JP-A-2-133582, JP-A-3-56062, Utility Model Registration No. 2570322, and the like. As described, a tank plate having a semi-cylindrical shape and an end plate provided with a hole connecting the ends of the tubes is known.
[0004]
[Problems to be solved by the invention]
By the way, the above-described heat exchanger is desirable to be easy to manufacture and to ensure the required pressure resistance performance, heat exchange efficiency, strength, etc., and the tank is also more rational based on these points. What is composed of
[0005]
The present invention has been made in view of such circumstances, and an object thereof is to provide a heat exchanger in which a tank plate and an end plate are efficiently assembled.
[0006]
[Means for Solving the Problems]
The invention described in the first claim of the present application is described with reference numerals used in specific examples, and a core 200 including a tube 210 through which a medium flows and a fin 220 attached to the tube, and an end portion of the tube In the heat exchanger 1 that performs heat exchange of the medium by heat transmitted to the core,
The tank 300 is formed by assembling a semi-cylindrical tank plate 310 and an end plate 320 provided with a hole 321 connecting the end of the tube.
A partition plate 330 is provided between the tank plate 310 and the end plate 320,
The partition plate 330 is provided with a step portion 332 that abuts the edge of the end plate 320 to regulate the amount of insertion of the end plate into the tank plate 310,
The edge of the tank plate 310 is provided with a plurality of bent pieces 311 that protrude from the edge of the tank plate and hold the end plate 320,
The bent piece 311 includes a base end side which is a non-bend portion having a length d larger than the plate thickness t of the tank plate 310, and a front end side continuous to the base end side,
In assembling the tank plate 310 and the end plate 320, the edge of the end plate 320 is abutted against the stepped portion 332 of the partition plate 330, and positioned.
Further, the heat exchanger has a configuration in which the proximal end side of the bent piece 311 is in contact with the end plate 320 and the distal end side is bent, and according to such a configuration, the tank plate can be obtained by bending the bent piece. And the end plate can be assembled efficiently.
[0007]
In particular, the partition plate is provided with a step portion that abuts the edge of the end plate and regulates the amount of insertion of the end plate into the tank plate. Therefore, when assembling the tank plate and the end plate, Can be positioned by abutting against the step. Thereby, a tank plate and an end plate can be assembled | attached efficiently .
[0008]
Further, since the bent piece is bent at the distal end side while the proximal end is in contact with the end plate, the bent piece can be easily bent. Temporarily, if it is going to bend the whole body of a bending piece, it requires comparatively strong processing pressure, and also causes unnecessary deformation of a tank plate, and this may cause a medium leakage, but in the present invention, Such inconvenience can be efficiently avoided.
[0009]
Further, the present invention provides a bending of the bent piece, the length of the base end side of the bent piece in contact with the said end plate is a heat exchanger of larger construction than the plate thickness of the tank plate, this According to such a configuration, the bent piece can be bent more easily.
[0010]
That is, in the present invention, the length of the base end side of the bent piece that contacts the end plate is sufficiently ensured with respect to the thickness of the tank plate, and the bending is further facilitated.
[0011]
In the present invention , the tank plate has a configuration in which a plurality of the bent pieces are provided at the edge of the tank plate. According to such a configuration, the tank plate and the end plate are formed by the plurality of bent pieces. It is possible to assemble more accurately and firmly.
[0012]
The invention described in claim 2 of the present application is the heat exchanger according to claim 1 , wherein the tank plate is provided with a wall portion protruding toward the core at the edge of the tank plate. The gap formed between the tank and the fin is covered with the wall of the tank plate. Therefore, particularly when air is sent to the core, air leakage caused by the gap between the tank and the fin is eliminated, and the heat exchange efficiency is improved.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, specific examples of the present invention will be described in detail with reference to the drawings.
[0014]
The heat exchanger 1 of this example is a condenser of an in-vehicle air conditioning refrigeration cycle mounted on an automobile, and as shown in FIG. 1, a plurality of tubes 210 and a plurality of fins 220 that circulate a medium are alternately stacked. And a pair of tanks 300 to which the ends of the tubes 210 are connected, and heat exchange of the medium is performed by heat transmitted to the core 200.
[0015]
The tank 300 is provided with an inlet portion 400 through which the medium flows and an outlet portion 500 through which the medium flows out.
[0016]
The medium flows into the tank 300 from the inlet 400 and flows through the tube 210 while exchanging heat, and then is discharged from the outlet 500 to the outside of the tank 300.
[0017]
Each tank 300 is partitioned at a predetermined interval, and the medium is configured to reciprocate between each tank 300 a plurality of times.
[0018]
Further, one tank 300 is provided with a gas-liquid separator 600, and the medium is once sent from the tank 300 to the gas-liquid separator 600 in the process of flowing from the inlet 400 to the outlet 500, and the liquid layer Only the configuration is directed to the exit portion 500.
[0019]
Further, side plates 700 as reinforcing members are provided on the upper and lower sides of the core 200, respectively. The end of each side plate 700 is supported by the tank 300.
[0020]
These tubes 210, fins 220, tank 300, outlet portion 400, inlet portion 500, gas-liquid separator 600, and side plate 700 constituting the heat exchanger 1 are formed by molding aluminum or aluminum alloy. The members are assembled, and the assembly is integrally formed by heat treatment in a furnace. The brazing material clad and the flux are applied in advance to the main parts of each member.
[0021]
In particular, the tube 210 of this example is a flat shape made by extrusion molding or roll molding of a plate. The interior is divided into a plurality of sections to obtain the required pressure resistance performance.
[0022]
As shown in FIGS. 2 to 4, the tank 300 of this example includes a semi-cylindrical tank plate 310 and an end plate 320 provided with a hole 321 for inserting and connecting the end of the tube 210. It is composed. A plurality of holes 321 are provided at regular intervals in the longitudinal direction of the end plate 320.
[0023]
A partition plate 330 is provided between the tank plate 310 and the end plate 320 at a predetermined interval. That is, the end portion and the inside of the tank 300 are closed and partitioned by the partition plate 330.
[0024]
Each of the tank plate 310, the end plate 320, and the partition plate 330 is formed by press-molding a plate having a required thickness.
[0025]
Since the end plate 320 is reinforced by connecting the end portions of the tubes 210, the plate thickness may be set slightly smaller than the plate thickness of the tank plate 310. Further, the end plate 320 has a shape that bulges toward the core 2 and is configured to improve the pressure resistance performance of the tank 300.
[0026]
The tank plate 310 and the end plate 320 are assembled by attaching the end plate 320 between both edges of the tank plate 310. The amount of insertion of the end plate 320 is regulated by the partition plate 330. Then, both edge portions of the end plate 320 are brazed to the inner peripheral surface of the tank plate 310.
[0027]
The partition plate 330 includes a protrusion 331 that is inserted into a hole 310a provided in the tank plate 310, and is positioned by inserting the protrusion 331 into the hole 310a. In addition, a stepped portion 332 that abuts the end plate 320 is provided at a key point of the partition plate 330.
[0028]
Furthermore, a plurality of bent pieces 311 for holding the end plate 320 are provided at an appropriate interval at the edge of the tank plate 310. After the end plate 320 is positioned on the tank plate 310, the end plate 320 is fixed by bending the bent piece 311. The bending piece 311 is bent using a caulking jig or the like.
[0029]
Further, the bent piece 311 of this example is formed by bending the distal end side with the proximal end abutting against the end plate 320.
[0030]
That is, when the end plate 320 is positioned on the tank plate 310, the base end side of the bent piece 311 is brought into contact with the side surface of the end plate 320. (At this time, there may be some clearance between the base end side of the bent piece 311 and the side surface of the end plate 320.)
When the bent piece 311 is bent, the base end side is supported by the end plate 320, and the tip end side excluding the base end side is bent.
[0031]
In the case of this example, the length d on the base end side of the bent piece 311 in contact with the end plate 320 is set to be larger than the plate thickness t of the tank plate 310 at the time of such bending.
[0032]
According to such a configuration, the bent piece 311 can be easily bent, and the tank plate 310 and the end plate 320 can be assembled efficiently.
[0033]
As described above, according to the heat exchanger of this example, the tank plate and the end plate can be efficiently assembled by bending the bent piece.
[0034]
In particular, the bent piece can be easily bent because the distal end side is bent while the proximal end abuts the end plate.
[0035]
If it is attempted to bend the whole body of the bent piece, a relatively strong processing pressure is required and an unnecessary deformation of the tank plate may be caused, which may cause a medium leakage. Such inconvenience can be efficiently avoided.
[0036]
Further, according to the heat exchanger of this example, when the bent piece is bent, the length of the base end side of the bent piece in contact with the end plate is larger than the plate thickness of the tank plate, so that the bent piece is further easily Can be folded.
[0037]
That is, in the present invention, the length of the base end side of the bent piece that comes into contact with the end plate can be sufficiently secured with respect to the thickness of the tank plate, and the bending can be further facilitated.
[0038]
Further, according to the heat exchanger of this example, since the plurality of bent pieces are provided at the edge of the tank plate, the tank plate and the end plate can be more accurately and firmly assembled by the plurality of bent pieces. .
[0039]
Next, a second specific example of the present invention will be described with reference to FIGS.
[0040]
As shown in these drawings, a plurality of wall portions 312 projecting toward the core 200 are provided at the edge portion of the tank plate 310 of this example. However, these wall portions 312 are respectively provided between the plurality of bent pieces 311.
[0041]
In addition, since the other structure is the same as that of the specific example mentioned above, while attaching the same code | symbol to a common member, description is abbreviate | omitted.
[0042]
As described above, according to the heat exchanger of the present example, since the wall portion protruding toward the core side is provided at the edge portion of the tank plate, the gap formed between the tank and the fin is not provided with the wall portion of the tank plate. Can be covered. Therefore, especially when air is sent to the core, air leakage caused by the gap between the tank and the fin can be eliminated, and the heat exchange efficiency can be improved.
[0043]
In particular, a side plate may be brazed to the wall of the tank plate. According to such a configuration, the strength of the heat exchanger can be reliably improved.
[0044]
【The invention's effect】
The invention described in claim 1 of the present application includes a core 200 including a tube 210 for circulating a medium and a fin 220 attached to the tube, and a tank 300 to which an end of the tube is connected. In the heat exchanger 1 for exchanging heat of the medium by the transmitted heat, the tank 300 is assembled with a semi-cylindrical tank plate 310 and an end plate 320 provided with a hole 321 connecting the ends of the tubes. A partition plate 330 is provided between the tank plate 310 and the end plate 320, and the partition plate 330 abuts an end edge of the end plate 320 to the tank plate 310. the stepped portion 332 for restricting the insertion amount provided, at the edge of the tank plate 310, A plurality of bent pieces 311 that protrude from the edge of the tank plate and hold the end plate 320 are provided, and the bent pieces 311 are bases that are unfolded portions having a length d larger than the plate thickness t of the tank plate 310. An end side and a distal end side connected to the base end side, and when assembling the tank plate 310 and the end plate 320, the end edge of the end plate 320 is pushed into the step portion 332 of the partition plate 330. positioned against further a heat exchanger configured by bending the distal end of the proximal-side while contact with the end plate 320 of the bent piece 311, with this configuration, bending the bent piece Thus, the tank plate and the end plate can be efficiently assembled. In particular, the partition plate is provided with a step portion that abuts the edge of the end plate and regulates the amount of insertion of the end plate into the tank plate. Therefore, when assembling the tank plate and the end plate, Can be positioned by abutting against the step. Thereby, a tank plate and an end plate can be assembled | attached efficiently .
[0045]
Further, the present invention provides a bending of the bent piece, the length of the base end side of the bent piece in contact with the said end plate is a heat exchanger of larger construction than the plate thickness of the tank plate, this According to such a configuration, the folded piece can be folded more easily.
[0046]
In the present invention , the tank plate has a configuration in which a plurality of the bent pieces are provided at the edge of the tank plate. According to such a configuration, the tank plate and the end plate are formed by the plurality of bent pieces. It can be assembled more accurately and firmly.
[0047]
The invention described in claim 2 of the present application is the heat exchanger according to claim 1 , wherein the tank plate is provided with a wall portion protruding toward the core at the edge of the tank plate. The gap formed between the tank and the fin can be covered with the wall of the tank plate.
[Brief description of the drawings]
FIG. 1 is a front view showing a heat exchanger according to a specific example of the present invention.
FIG. 2 is a perspective view showing a main part of a tank according to a specific example of the present invention.
FIG. 3 is an exploded perspective view showing a main part of a tank according to a specific example of the present invention.
FIG. 4 is an explanatory view showing a tank plate and an end plate according to a specific example of the present invention.
FIG. 5 is a perspective view showing a main part of a tank according to a specific example of the present invention.
FIG. 6 is an exploded perspective view showing a main part of a tank according to a specific example of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Heat exchanger 200 Core 210 Tube 220 Fin 300 Tank 310 Tank plate 310a Hole part 311 Bending piece 312 Wall part 320 End plate 321 Hole part 330 Partition plate 331 Projection part 332 Step part 400 Inlet part 500 Outlet part 600 Gas-liquid separator 700 Side plate d Length on the base end side of the bent piece in contact with the end plate t Thickness of tank plate

Claims (2)

In a heat exchanger that includes a tube that circulates a medium and a core that is attached to the tube, and a tank to which an end of the tube is connected, and performs heat exchange of the medium by heat transmitted to the core.
The tank is composed of a semi-cylindrical tank plate and an end plate provided with a hole connecting the end of the tube.
A partition plate is provided between the tank plate and the end plate,
The partition plate is provided with a step portion that abuts the edge of the end plate to regulate the insertion amount of the end plate with respect to the tank plate,
The edge of the tank plate is provided with a plurality of bent pieces that protrude from the edge of the tank plate and hold the end plate,
The bent piece includes a proximal end side that is a non-bent portion having a length d larger than a plate thickness t of the tank plate, and a distal end side continuous to the proximal end side,
In assembling the tank plate and the end plate, the end edge of the end plate is abutted against the step portion of the partition plate, and positioned.
Further, the heat exchanger is characterized in that the distal end side is bent while the base end side of the bent piece is in contact with the end plate.   The capacitor according to claim 1, wherein a wall projecting toward the core is provided at an edge of the tank plate.

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