JP3405661B2 - Water-cooled aftercooler core structure - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the structure of a core of a water-cooled aftercooler provided in an intake manifold of an engine. 2. Description of the Related Art Conventionally, a water-cooled aftercooler has a core 10 composed of a large number of tubes and fins mounted in an intake manifold 5 as shown in FIGS. Cooling water is supplied to cool the supply air supercharged by the turbocharger 2. In the illustrated example, the cooling water w flows into the core 10 from the cooling water inlet 15 provided below one end of the intake manifold 5 by the cooling water pump 3, and the flow of air supply indicated by an arrow A Flows through the tube below the core at right angles to the other, is reversed at the other end, is discharged from the cooling water outlet 16 through the upper tube, and is cooled and circulated by a radiator (not shown). The intake manifold 5 is divided into an upper half portion 5a and an upper half portion, and a core 10
The core 10 is supported by the flange 13 of the core 10 being interposed therebetween. The core 10 (see FIGS. 1 and 2) has a plurality of flat tubes T each having a fin F around the periphery thereof, and has a cooling water inlet 15 at one end and a cooling water outlet 16 at an upper end. The other end is connected to the fixed inlet / outlet tank 14, and the other end is connected to the reversing tank 11 for reversing the flow. The temperature of the cooling water w flowing inside the core 10 and the supply air A flowing outside thereof change depending on the operating conditions.
1, 14 and the flange 13 are not fixed. Therefore, the tank vibrates due to the vibration accompanying the operation of the engine, and when the vibration is large, there is a possibility that the components may be damaged. The entrance / exit tank 14 includes entrances 16 and 15.
Is relatively rigid and strong because it is connected to the pipe P via a pipe. However, it is difficult to increase the rigidity of the reversing-side tank 11 because of the structure in which the expansion and contraction of the tube due to thermal expansion is released. SUMMARY OF THE INVENTION An object of the present invention is to provide a water-cooled aftercooler core structure having high rigidity against vibration and flexibility in the direction of expansion and contraction of the tube. And According to the present invention, there is provided a core of a water-cooled aftercooler provided in an intake manifold of an engine, in which cooling water is orthogonal to a flow of supply air. In the structure of the core of the water-cooled aftercooler, the core is provided with an inlet and an outlet for cooling water at one end and a tank for reversing the flow of cooling water at the other end. The tank provided on the reversing side is provided apart from the flange that mounts the core on the intake manifold, both ends are fixed to the upper and lower surfaces of the tank, and the middle part is spaced from the tank end face. And a holding plate formed in parallel and fixed to the flange. According to the present invention, the reversing tank of the aftercooler core is supported by the flange via the holding plate, and has particularly high rigidity in the vertical direction. It is distant from the tank and is flexible as the displacement of the presser plate in the bending direction. Therefore, vibration of the tank is suppressed, and stress generation due to thermal expansion is avoided, so that durability and reliability of the core can be improved. Embodiments of the present invention will be described below with reference to the drawings. The same components as those in the description of the related art are denoted by the same reference numerals, and redundant description will be omitted.
1 and 2, one end of each of the plurality of tubes T is communicated with an inlet / outlet side tank 14, and the inside of the tank 14 is vertically partitioned so that a cooling water outlet 16 is provided above and a cooling water inlet 15 is provided below. Each is fixed. And
The other end is communicated from the lower tube to the upper tube by the reversing tank 11 so that the flow of the cooling water is reversed. FIG. 3 shows a portion of the reversing-side tank 11, wherein the plate G on the side of the tube T and the flange 13 are a
And the space between the tank 11 and the flange 13 is not fixed. The holding plate denoted by reference numeral 12 has both ends 12a, 12a fixed to the upper and lower surfaces of the tank 12 (brazed), and once bent along the tank end surface 11a, the intermediate portion 12b becomes the tank end surface. 1
1a, it is formed parallel to the tank end face 11a. The flange 13 is welded at the portion c. With the above-described structure, the reversing-side tank 11 is supported by the flange 13 via the holding plate 12 to suppress its vibration. In particular, the holding plate 12 is vertically Has high rigidity and can avoid resonance vibration. On the other hand, the displacement of the tube T in the expansion and contraction direction can be easily escaped by the bending deformation of the holding plate intermediate portion 12b. The present invention is configured as described above and has the following effects. (1) The holding plate has a simple structure, has high rigidity in the vibration direction, has flexibility in the tube expansion and contraction direction, and can suppress the core vibration without hindering the tube expansion and contraction. (2) The resonance frequency can be changed by appropriately selecting the width and the plate pressure of the holding plate, and the flexibility is excellent.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a plan view showing an embodiment of a core of an aftercooler according to the present invention. FIG. 2 is a side view of FIG. 1; FIG. 3 is a perspective view showing details of a reversing-side tank portion of the core shown in FIG. 1; FIG. 4 is a side view of an engine equipped with a water-cooled aftercooler. FIG. 5 is a front view of FIG. 4; [Description of Signs] 1 ・ ・ ・ Engine Body 2 ・ ・ ・ Turbocharger 3 ・ ・ ・ Cooling Water Pump 5 ・ ・ ・ Intake Manifold 10 ・ ・ ・ After Cooler Core 11 ・ ・ ・ Reversal Side Tank 12 ・ ・ ・ Pressing Plate 13 Flange 14 Inlet / outlet side tank 15 Cooling water inlet 16 Cooling water outlet

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) F02B 29/04 F28F 9/00 331

Claims (1)

(57) [Claim 1] A core of a water-cooled aftercooler provided in an intake manifold of an engine, in which cooling water reciprocates orthogonally to a flow of supply air. In the core structure of a water-cooled aftercooler, the core is provided with an inlet and an outlet for cooling water at one end and a tank for reversing the flow of cooling water at the other end.
The tank provided on the reversing side is provided apart from a flange that mounts the core on the intake manifold, and both ends are fixed to the upper and lower surfaces of the tank, and the middle portion is spaced from the tank end surface. A structure of a core of a water-cooled aftercooler, comprising a holding plate formed in parallel and fixed to the flange.