JP2006336890A - Intercooler - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an intercooler capable of exercising desired cooling performance by unifying circulating quantity of intake air flowing into each tube from an inlet passage. <P>SOLUTION: In this intercooler comprising a core portion 1 formed by stacking the plurality of tubes 5 having ventilation passages, the inlet passage R2 communicated with one end side of each tube 5 of the core portion 1 for allowing the intake air from an intake port 2 to flow therein, and an outlet passage R3 communicated with the other end side of each tube 5 of the core portion 1 for discharging the intake air from a discharge port 3, an air guide means is mounted for diffusing the intake air into the inlet passage R2. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an intercooler for cooling compressed intake air in order to sufficiently bring out a supercharging effect in an engine with a supercharger.

  2. Description of the Related Art Conventionally, in a turbocharged engine, an intercooler technique for cooling compressed intake air with vehicle traveling wind or cooling water has been known in order to sufficiently bring out the supercharging effect (Patent Documents 1 and 2). reference).

In general, such an intercooler includes a core portion in which a plurality of tubes having ventilation paths are stacked, an inlet passage that communicates with one end side of each tube of the core portion and into which intake air flows from an intake port. And an outlet passage that communicates with the other end side of each tube of the core portion and exhausts the intake air from the discharge port, and both the passages form cylindrical portions at both ends of the tube. It is formed by laminating a plurality so as to connect a plurality of each other, or by covering each tube plate with a tank in a state where both ends of the tube are fitted and fixed to the tube plate.
JP 09-310988 A JP 09-210578 A

  However, in the conventional intercooler, there is a problem that the amount of intake air flowing into each tube from the inlet passage is biased depending on the portion of the core portion, and sufficient cooling performance cannot be exhibited.

  The above-mentioned deviation of the intake air inflow amount differs depending on the arrangement of the intake port in the inlet passage and the angle of the intake port with respect to the tube, but these may be determined by the mounting position of the intercooler and the piping layout of the intake port. Many.

  The present invention has been made in order to solve the above-described problems, and the object of the present invention is to make the flow rate of the intake air flowing into each tube from the inlet passage uniform and to exhibit a desired cooling performance. To provide an intercooler.

  According to the first aspect of the present invention, a core portion in which a plurality of tubes having air passages are stacked, and an inlet that communicates with one end side of each tube of the core portion and into which intake air flows from the suction port In an intercooler having a passage and an outlet passage that communicates with the other end of each tube of the core portion and that discharges the intake air from a discharge port, a guide for diffusing the intake air into the inlet passage. A wind means is provided.

  According to the first aspect of the present invention, a core portion in which a plurality of tubes having air passages are stacked and communicated with one end side of each tube of the core portion, and intake air flows from the suction port. In an intercooler that includes an inlet passage that is communicated with the other end of each tube of the core portion and that has an outlet passage through which the intake air is discharged, the intake air is diffused into the inlet passage. Since the air guiding means is provided, the flow rate of the intake air flowing into each tube from the inlet passage can be made uniform by the air guiding means, and desired cooling performance can be exhibited.

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

Example 1 will be described below.
1 is a perspective view showing an intercooler according to a first embodiment of the present invention, FIG. 2 is a sectional side view thereof, FIG. 3 is an exploded view of a core portion, a suction port, and a discharge port according to the first embodiment, and FIG. FIG. 5 is an exploded view (a) and assembly (b) of the tube of Example 1, FIG. 5 is a view showing the air guide plate of Example 1, and FIG. It is a figure to do.

First, the overall configuration will be described.
As shown in FIGS. 1 to 3, the intercooler according to the first embodiment is a so-called air-cooling type that cools compressed intake air with vehicle travel wind in an engine with a supercharger in order to sufficiently bring out the effect of supercharging. The intercooler includes a core portion 1, a suction port 2, a discharge port 3, and a wind guide plate 4 (corresponding to a wind guide means).

The core portion 1 is composed of a plurality of tubes 5 and outer fins 6, and as shown in FIG. 4, each tube 5 is air-flowed into its inside by a pair of dish-like shells 7, 8 stacked in the middle. R1 is formed. In some cases, an inner shell is provided in the ventilation path R1.
Of the two shells 7 and 8, openings 7 a that open upward are formed at both longitudinal ends of the shell 7, and cylindrical cylindrical portions 8 a that project downward are formed at both longitudinal ends of the shell 8. Each is formed.
Further, the opening diameter W1 of the opening 7a of the shell 7 is formed larger than the outer diameter W2 of the cylindrical portion 8a of the shell 8, and thereby the adjacent tubes 5 with the wavy outer fin 6 interposed therebetween. The core portion 1 is formed by stacking a plurality of cylindrical portions 8a so as to be fitted into the opening 7a.

  In addition, the tube 5a at the outermost end of the core portion 1 has a cylindrical adapter portion protruding upward on one end side of the patch plate 10 in addition to the patch plate 10 being fitted to the shell 8 instead of the shell 7. 10a is formed, and the cylindrical suction port 2 is inserted in this state.

  On the other hand, the tube 5b at the outermost end of the core portion 1 has a cylindrical adapter protruding downward on the other end side of the patch plate 11 in addition to the patch plate 11 being fitted to the shell 7 instead of the shell 8. A portion 11a is formed, and a cylindrical discharge port 3 is inserted in the portion 11a.

  Therefore, as shown in FIG. 2, an inlet passage R <b> 2 that communicates with one end side of each tube 5 and communicates with the suction port 2 is formed on one side of the core portion 1. Is formed with an outlet passage R3 that communicates with the other end of each tube 5 and communicates with the discharge port 3.

And in the entrance channel | path R2 of the core part 1, the baffle plate 4 shown in FIG. 5 is provided.
The air guide plate 4 is formed by spirally deforming an aluminum metal plate, and has an outer diameter and a total length that are substantially the same as those of the inlet passage R2. In addition, although the lower end part of the wind guide plate 4 of the present Example 1 is helically twisted and deformed by approximately 360 degrees with respect to the upper end part, the twist angle may be 360 degrees or more. It can also be set appropriately.

  The outer fin 6 uses a corrugated corrugated type, and a so-called return louver formed by louvers on both sides and a central louver (not shown) is formed between the corrugated top and trough. Has been.

  In addition, all the constituent members constituting the intercooler of the first embodiment are made of aluminum, and a clad layer (brazing sheet) made of a brazing material is provided on at least one side of the joint portions to which the respective constituent members are joined. It has been.

Next, the operation will be described.
In order to manufacture the intercooler configured as described above, as shown in FIG. 4, the shells 7, 8 are overlapped in the middle to form the tube 5, and the tube 5 is attached to the outer fin 6. The core portion 1 is formed by stacking a plurality of layers alternately.
At this time, an annular sheet may be interposed between both end portions of the adjacent tubes 5.

  Next, the tubes 5a and 5b to which the patch plates 10 and 11 are attached are arranged at the outermost end of the core portion 1, and the air guide plate 4 is press-fitted into the inlet passage R2 so that the inner periphery of the cylindrical portion 8a of each tube 5 is placed. It accommodates in the state contact | abutted to etc.

Next, the intercooler is temporarily assembled by attaching the suction port 2 to the adapter portion 10a of the patch plate 10 and the discharge port 3 to pass through the adapter portion 11a of the patch plate 11 respectively.
In addition, when the outer periphery of the air guide plate 4 is smaller than the inner periphery of the suction port 2, the suction port 2 is accommodated after the air guide plate 4 is mounted.

Next, the intercooler temporarily assembled in this manner is heat-treated in a heating furnace (not shown), and the joint portions of the respective members are brazed and fixed integrally.
In the first embodiment, the air guide plate 4 is brought into contact with the inner peripheral surface of the cylindrical portion 8a of each tube 5 and fixed together by brazing, but the inlet passage 2 from the intake port 2 of the intercooler after brazing is used. The air guide plate 4 may be inserted into R2 and fixed using an appropriate fixing member.

  In the intercooler configured as described above, intake air at around 160 ° C. compressed by a supercharger (not shown) flows into the inlet passage R2 from the suction port 2 and flows through the ventilation passage R1 of each tube 5. Then, after flowing into the exit passage R3, it is cooled to around 40 ° C. by exchanging heat with the vehicle traveling wind via the outer fin 6 and then discharged from the discharge port 3 and flows into the engine.

  At this time, as shown in FIG. 6, the intake air flowing into the inlet passage R2 from the suction port 2 (illustrated by a wavy arrow) flows from the upstream side to the downstream side in the inlet passage R2, while the air guide plate 4 Thus, the air flows into one end side of each tube 5 while diffusing in a plurality of directions in a spiral manner, whereby the inflow amount of the intake air in each tube 5 can be made uniform, and the heat radiation amount of the core portion 1 can be improved and desired. Cooling performance can be demonstrated.

  Here, in the conventional invention, there is a problem in that the inflow amount of the intake air in each tube is biased depending on the portion of the core portion, and sufficient cooling performance cannot be exhibited.

  The above-mentioned deviation of the intake air inflow amount differs depending on the arrangement of the intake port in the inlet passage and the angle of the intake port with respect to the tube, but these are determined by the intercooler mounting position and the intake port piping layout. There are many.

  For example, as in the case of the intercooler of the first embodiment, when the suction port 2 is disposed on one side of the inlet passage R2 and is disposed at an angle orthogonal to each tube 5, the suction port 2 enters the inlet passage R2. Since the intake air that has flowed into the tube 5 collides with the patch plate 11 without flowing into each tube 5 and then finally changes its direction and flows into each tube 5, the intake air does not easily flow uniformly into each tube 5. Depending on the part of the core part 1, there is a tube through which almost no intake air flows, and the effective area of the core part 1 is significantly reduced and the cooling performance is lowered.

  However, in the intercooler of the first embodiment, as described above, the intake air flowing into the inlet passage R2 from the intake port 2 is diffused in a plurality of directions spirally by the air guide plate 4. While flowing into one end side of the tube 5, it flows so as to move from the upstream side to the downstream side in the inlet passage R <b> 2, thereby making it possible to make the inflow amount of the intake air in each tube 5 uniform, The desired cooling performance can be exhibited by improving the heat radiation amount.

Next, the effect will be described.
As described above, in the intercooler according to the first embodiment, the core portion 1 in which a plurality of tubes 5 having air passages are stacked and communicated with one end side of each tube 5 of the core portion 1, and An intercooler provided with an inlet passage R2 into which intake air flows from the suction port 2 and an outlet passage R3 that communicates with the other end of each tube 5 of the core portion 1 and from which the intake air is discharged from the discharge port 3. Since the air guide plate 4 for diffusing the intake air is provided in the inlet passage R2, the flow rate of the intake air flowing into the tubes 5 from the inlet passage R2 is made uniform in the air guide plate 4 so that the desired cooling performance is achieved. Can be demonstrated.

Example 2 will be described below.
In the intercooler according to the second embodiment, instead of omitting the air guide plate described in the first embodiment, an air guide plate composed of a plurality of wings is formed inside the cylindrical portion of the shell of the tube. Since it is the same as that of Example 1, the same components are denoted by the same reference numerals, description thereof will be omitted, and only differences will be described in detail.

  7 is a perspective view of the bottom surface of the shell 8 of the first embodiment, FIG. 8 is a perspective view of the laminated state of only the shell 8 as viewed from the bottom surface (the shell 7 is omitted), and FIG. 9 is an enlarged view of the main part of the second embodiment. It is sectional drawing.

  As shown in FIG. 7, in the intercooler of the second embodiment, the air guide portion 21 (the guide portion) configured with a plurality of (three in the present embodiment) blades 20 inside the cylindrical portion 8 a of the shell 8 in the tube 5. 8 and 9, as shown in FIGS. 8 and 9, the wings 20 of the air guide portions 21 of the adjacent tubes 5 are formed so as to be offset in the vertical direction, whereby the inlet channel R2 is formed. It is formed in a complicated spiral shape.

  In addition, about the shape and formation number of the wing | blade 20 of each tube 5, it can set suitably. Further, the air guide portion 21 does not need to be formed inside the cylindrical portion 8 a of the shell 8 in all the tubes 5, and one cylindrical portion in which the air guide portion 21 is omitted is provided between the tubes 5 including the air guide portion 21. You may make it arrange | position above.

  Therefore, in the intercooler of the second embodiment, the intake air that has flowed into the inlet passage R2 from the suction port 2 circulates so as to move from the upstream side (suction port 2) in the inlet passage R2 to the downstream side. Then, the air flows into the one end side of each tube 5 while being diffused in a plurality of directions by each air guide portion 21 (see the wavy arrow X in FIG. 9), thereby making it possible to make the inflow amount of the intake air in each tube 5 uniform, The heat radiation amount of the core part 1 can be improved and desired cooling performance can be exhibited.

  Further, since the air guide portion 21 is formed in the cylindrical portion 8a of the shell 8 in the tube 5, the air guide portion 21 is simultaneously disposed with high accuracy in the process of forming the shells 7 and 8 and the tube 5 when the core portion 1 is assembled. can do

Although the present embodiment has been described above, the present invention is not limited to the above-described embodiment, and design changes and the like within the scope not departing from the gist of the present invention are included in the present invention.
For example, the number of tubes 5 stacked, the arrangement of the suction port 2, the angle, and the like can be set as appropriate.

  Further, in the intercooler of the first embodiment, a plurality of inlet passages R2 and outlet passages R3 are stacked so as to form cylindrical portions 7a, 8a at both ends of the tube 5 and connect the cylindrical portions 7a, 8a to each other. However, as shown in FIG. 10, the both ends of the tube 5 are fitted and fixed to the tube plates 30 and 31, respectively. The air guide plate 4 as described in the present embodiment may be provided in the inlet passage 2 of the intercooler in which the inlet passage R2 and the outlet passage R3 are formed by covering the tanks 32 and 33 having three.

It is a perspective view which shows the intercooler of Example 1 of this invention. It is a sectional side view which shows the intercooler of Example 1 of this invention. FIG. 3 is an exploded view of a core portion, a suction port, and a discharge port according to the first embodiment. It is a figure which shows the exploded view (a) and assembly drawing (b) of the tube of the present Example 1. FIG. It is a figure which shows the baffle plate of the present Example 1. FIG. FIG. 3 is an enlarged cross-sectional view of a main part of the first embodiment. 3 is a bottom perspective view of a shell 8. FIG. It is the perspective view which looked at the lamination state of only shell 8 from the bottom (omitted about shell 7). It is a principal part expanded sectional view of the present Example 2. FIG. It is a figure which shows the intercooler of the other Example.

Explanation of symbols

R1 Air passage R2 Inlet passage R3 Outlet passage 1 Core portion 2 Suction port 3 Discharge port 4 Air guide plate (corresponding to air guide means)
5 Tube 6 Outer fin 7, 8 Shell 7a Opening 8a Cylindrical part 10, 11 Patch plate 10a, 11a Adapter part 20 Wing 21 Air guide part 21 (corresponding to air guide means)

Claims (1)

A core portion in which a plurality of tubes having ventilation paths are laminated;
An inlet passage that communicates with one end of each tube of the core portion and into which intake air flows from the intake port;
In an intercooler provided with an outlet passage that communicates with the other end side of each tube of the core portion and that discharges intake air from a discharge port.
An intercooler characterized in that an air guide means for diffusing the intake air is provided in the inlet passage.

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