CN109555595B - Water-cooled charge air cooler - Google Patents

Abstract

The water-cooled charge air cooler comprises a core body and a shell body which is coated on the periphery of the core body, wherein the shell body is formed by integrally punching and flanging an aluminum plate, and a seam is formed on one side of the shell body; the two ports of the core body are connected with an air inlet chamber body and an air outlet chamber body through flanges, and the end parts of the shell are inserted into gaps between the flanges and the core body; the upper and lower surfaces of the shell are respectively provided with a convex hull close to the end part of the core body, and the convex hulls on the upper surface of the shell are respectively connected with cooling water pipes. The scheme provides a water-cooled charge air cooler, adopts integrated stamping forming's casing, has compact structure, advantage that the dependable performance.

Description

Water-cooled charge air cooler

Technical Field

The invention belongs to the technical field of supercharged internal combustion engines, and particularly relates to a water-cooled supercharged air cooler.

Background technique

The miniaturization of internal combustion engines is an important development route for energy conservation and emission reduction. Turbocharging technology is widely used to pressurize the air sucked into the engine to increase the engine's intake volume and increase engine power. When the air pressure increases after turbocharging, the temperature also rises to over 100°C. A cooler is required to cool the temperature to below 80°C to prevent the high temperature from affecting the power, combustion and emission characteristics of the internal combustion engine.

There are two types of charge air coolers: air-cooled and water-cooled. The cooler that uses natural wind in the environment to cool the charge air has been widely used in the market, and the cooler mentioned in this article uses cooling water to cool the charge air. It has the advantages of high heat exchange efficiency, low resistance, and short pipelines. It will reduce the fuel consumption and emissions of the internal combustion engine and improve power response, and is being used more and more.

In the common existing solution, the shell of the cooler covering the core is composed of at least two stamped parts, with a large number of parts. When the water shell is welded with the tube bundle and the main board, there are many potential leakage points and the process is complicated.

Summary of the invention

The object of the present invention is to provide a water-cooled charge air cooler which adopts an integrally stamped shell and has the advantages of compact structure and reliable performance.

The object of the present invention is achieved as follows: a water-cooled supercharged air cooler includes a core and a shell covering the core, wherein the shell is formed by integrally stamping and folding an aluminum plate, and a seam is formed on one side of the shell; the two ends of the core are connected to an air inlet chamber body and an air outlet chamber body through flanges, and the end of the shell is inserted into the gap between the flange and the core; convex bulges are respectively provided on the upper and lower surfaces of the shell near the ends of the core, and cooling water pipes are respectively connected to the convex bulges on the upper surface of the shell.

By adopting the above technical solution, the shell is stamped from an aluminum plate and processed through processes such as blanking, stamping, and folding. It only forms one seam, which reduces potential leakage points and simplifies assembly. The convex bump on the shell is used for collecting and distributing coolant to improve fluidity and pressure drop. A mounting hole is set on the convex bump, and the water pipeline is inserted into the mounting hole and riveted, and then brazed and sealed.

Preferably, the core body comprises an array of spaced-apart square vent tubes, with heat exchange fins distributed between adjacent vent tubes; the two ends of the vent tubes are respectively connected to an air inlet chamber and an air outlet chamber, and the cooling water pipe is connected to the internal space of the heat exchange fins; the upper surface of the shell is brazed and bonded to the top surface of the square vent tube, and the lower surface of the shell is brazed and bonded to the bottom surface of the square vent tube; operation windows are provided on both side surfaces of the shell, and side panels are bonded on both sides of the core body, which cover the operation windows and are formed as a whole with the side walls of the shell by brazing.

By adopting the above technical solution, the upper and lower surfaces of the shell are in contact with the upper and lower side planes of the square ventilation pipe and are connected together by brazing, which is beneficial to enhancing the strength of the core and avoiding water leakage; the operation window is convenient for the assembler to clamp the core inside the shell for assembly, the side panel is in contact with the shell plane, and is formed as a whole by brazing, so that the water in the heat exchange fins is prevented from flowing out through the operation window, and the connection strength of the joint is guaranteed.

Preferably, the air inlet chamber body and the air outlet chamber body are plastic parts or aluminum castings.

Preferably, a slot is provided at the edge of the flange, a claw is provided at the notch of the slot, the ports of the air inlet chamber body and the air outlet chamber body are inserted into the slot, and the claw hooks the outer wall of the air inlet chamber body and the air outlet chamber body.

Preferably, a sealing ring is provided at the bottom of the slot.

Preferably, the width of the seam is less than 0.5 mm.

BRIEF DESCRIPTION OF THE DRAWINGS

Fig. 1 is an overall structural diagram of the present invention;

Fig. 2 is a partial dissected view of the present invention;

FIG3 is a diagram showing the cooperation between the core and the shell of the present invention;

FIG. 4 is a parts diagram of the housing of the present invention.

Figure numerals: 1, shell; 2, convex bump; 2a, mounting hole; 3, cooling water pipe; 4, air inlet chamber body; 5, air outlet chamber body; 6, operation window; 7, joint; 8, sealing ring; 9, slot; 10, claw; 11, side panel; 12, square ventilation pipe; 13, heat exchange fin; 14, flange.

Detailed ways

The present invention is further described below with reference to specific embodiments in conjunction with the accompanying drawings, see Figures 1-4:

A water-cooled charge air cooler includes a core and a shell 1 wrapped around the core, wherein the shell 1 is formed by stamping and folding an aluminum plate as a whole, and a seam 7 is formed on one side of the shell 1; the two ends of the core are connected to an air inlet chamber 4 and an air outlet chamber 5 through a flange 14, and the end of the shell 1 is inserted in the gap between the flange 14 and the core; the upper and lower surfaces of the shell 1 are respectively provided with convex humps 2 near the ends of the core, and the convex humps 2 on the upper surface of the shell 1 are respectively connected to cooling water pipes 3. In this way, the shell 1 is stamped and formed from an aluminum plate, and is processed through blanking, stamping, folding and other processes, and only one seam 7 is formed, which reduces potential leakage points and is simple to assemble; the convex humps 2 on the shell 1 are used for collecting and distributing coolant, and are used to improve fluidity and pressure drop; the convex humps 2 are provided with mounting holes 2a, and the water pipeline is inserted into the mounting holes 2a for riveting, and then brazed and sealed.

Combined with Figures 2 and 3, the core body includes a square vent pipe 12 in an interval array, and heat exchange fins 13 are distributed between adjacent vent pipes; the two ends of the vent pipe are connected to the air inlet chamber body 4 and the air outlet chamber body 5 respectively, and the cooling water pipe 3 is connected to the internal space of the heat exchange fin 13; the upper surface of the shell 1 is brazed and attached to the top surface of the square vent pipe 12, and the lower surface of the shell 1 is brazed and attached to the bottom surface of the square vent pipe 12; the two sides of the shell 1 are provided with an operation window 6, and the two sides of the core body are attached with a side plate 11, and the side plate 11 covers the operation window 6 and is brazed to form a whole with the side wall of the shell 1. In this way, the upper and lower surfaces of the shell 1 are in contact with the upper and lower side planes of the square vent pipe 12, and are connected together by brazing, which is conducive to enhancing the strength of the core body and avoiding water leakage; the operation window 6 is convenient for the assembler to clamp the core assembly inside the shell 1, and the side plate 11 is in contact with the shell 1 plane and is brazed to form a whole, so that the water in the heat exchange fin 13 flows out through the operation window 6, and the connection strength of the joint 7 is guaranteed.

Preferably, the air inlet chamber body 4 and the air outlet chamber body 5 are plastic parts or aluminum castings.

Specifically referring to FIG. 2 , the flange 14 is provided with a slot 9 at its edge, and a claw 10 is provided at the notch of the slot 9. The ports of the air inlet chamber body 4 and the air outlet chamber body 5 are inserted into the slot 9, and the claw 10 hooks the outer wall of the air inlet chamber body 4 and the air outlet chamber body 5. A sealing ring 8 is provided at the bottom of the slot 9. Such a configuration improves the sealing performance and assembly convenience of the air inlet chamber.

Preferably, the width of the seam 7 is less than 0.5 mm.

The above embodiments are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims (4)

1. A water-cooled charge air cooler, comprising a core and a shell (1) covering the core, characterized in that: the shell (1) is formed by integrally stamping and folding an aluminum plate, and a seam (7) is formed on one side of the shell (1); two ends of the core are connected to an air inlet chamber (4) and an air outlet chamber (5) via flanges (14), and an end of the shell (1) is inserted into a gap between the flange (14) and the core; convex bulges (2) are respectively provided on the upper and lower surfaces of the shell (1) near the ends of the core, and cooling water pipes (3) are respectively connected to the convex bulges (2) on the upper surface of the shell (1); the core comprises a spaced array of square ventilation pipes (12), and heat exchange fins (13) are distributed between adjacent ventilation pipes; both ends of the ventilation pipes are respectively connected to the air inlet chamber (4) and an air outlet chamber body (5), the cooling water pipe (3) is connected to the internal space of the heat exchange fin (13); the upper surface of the shell (1) is brazed and bonded to the top surface of the square ventilation pipe (12), and the lower surface of the shell (1) is brazed and bonded to the bottom surface of the square ventilation pipe (12); operation windows (6) are provided on both side surfaces of the shell (1), and side panels (11) are bonded on both sides of the core body, the side panels (11) cover the operation windows (6) and are integrally formed with the side walls of the shell (1) by brazing; a groove (9) is provided on the edge of the flange (14), and a claw (10) is provided at the notch of the groove (9), the ports of the air inlet chamber body (4) and the air outlet chamber body (5) are inserted into the groove (9), and the claw (10) hooks the outer walls of the air inlet chamber body (4) and the air outlet chamber body (5). 2. The water-cooled charge air cooler according to claim 1, characterized in that the air inlet chamber body (4) and the air outlet chamber body (5) are plastic parts or aluminum castings. 3. The water-cooled charge air cooler according to claim 2, characterized in that a sealing ring (8) is provided at the bottom of the slot (9). 4. The water-cooled charge air cooler according to claim 1, characterized in that the width of the seam (7) is less than 0.5 mm.