KR100963771B1 - Hybrid Radiator Tank and Manufacturing Method thereof - Google Patents

Abstract

The present invention relates to a hybrid radiator tank and a manufacturing method thereof, the technical configuration comprising: an upper and lower header (Header) formed with a tab portion at regular intervals on the circumferential surface; Tubes having both ends coupled to the header; Radiating fins provided between the tubes to radiate heat of the cooling water; In the radiator coupled to the header, the upper and lower tanks having a coolant flow path formed therein, at least one tank of the tanks is injection molded into the upper and lower body of the metal material and the body And an accessory integrated with the body.

According to the hybrid radiator tank according to the present invention and a method for manufacturing the same, since the metal tanks and the plastic mounting pins, the inlet and outlet pipes, and the filler neck are integrally injection molded, there is no cracking during the coupling process with the header, and the metal tank Through the surface of the heat exchange is made to improve the cooling efficiency, there is no need to manufacture the mold of the tank according to the car body structure, the production cost is reduced, and there is an effect of increasing the efficiency of product production.

Radiator Tank, Header, Radiator

Description

Hybrid radiator tank and its manufacturing method

1 is a front view schematically showing a radiator with a general plastic radiator tank,

2 is a cross-sectional view of a plastic radiator tank according to the prior art,

3 is a perspective view schematically showing a general aluminum radiator,

4 is a schematic exploded perspective view of a radiator with a hybrid radiator tank according to the present invention,

5 is a cross-sectional view of a hybrid radiator tank according to the present invention,

6 is a state diagram schematically showing a method of manufacturing a hybrid radiator tank according to the present invention.

     DESCRIPTION OF REFERENCE NUMERALS

10,20 ... upper and lower tank,

11,21 ...

12,22 ...

13,23 ... Mounting Pin,

14,24 ... inlet and outlet pipe,                 

15.Filler Neck,

110 ... Radiator Core,

111.Tube,

112 ... heat sink.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a radiator for an automotive air conditioner that radiates heat of cooling water into the air. More specifically, the radiator tank, which forms a flow path of cooling water, is made of metal, and the accessory that is fired on the tank is made of plastic. The present invention relates to a hybrid radiator tank and a method of manufacturing the same for forming a furnace to improve the rigidity and cooling efficiency of the radiator tank.

In general, when a vehicle equipped with an internal combustion engine has heat generated when the engine is running, it is conducted to a cylinder head, a piston, a valve, etc., and the temperature of these parts becomes excessively high, the strength of the parts decreases due to thermal expansion or deterioration, and the engine life. This shortens the combustion state, leading to knocking and premature ignition, and thus the output of the engine is reduced. In addition, when the engine is incompletely cooled, the oil film on the inner circumferential surface of the cylinder is broken, and the lubrication function is lowered. Also, when the engine oil is deteriorated, abnormal wear of the cylinder occurs and the piston is fused to the inner wall of the cylinder. Done. Therefore, in general, a vehicle equipped with an internal combustion engine is provided with a water-cooled chiller that circulates coolant to cool the engine. The water-cooled cooling device is a device that circulates the cooling water absorbing the heat generated when the engine is driven by a water pump, lowers the temperature of the cooling water, and then supplies the cooling water to the automobile engine to cool the engine. It is composed of a cooling fan and a water temperature controller to increase the cooling efficiency of the cooling water by forcibly blowing to the radiator (radiator) and the heat exchanger.

Here, a general radiator for a vehicle air conditioner is composed of a radiator core and upper and lower header tanks mounted on upper and lower ends of a radiator core.

1 is a front view schematically showing a radiator having a general plastic radiator tank, and FIG. 2 schematically shows a cross-sectional view of a conventional plastic radiator tank.

As shown in FIGS. 1 and 2, a general automotive radiator 100 includes upper and lower header tanks 130 mounted on upper and lower ends of a radiator core 110 and a radiator core 110. 140).

Here, the radiator core 110 is a heat dissipation fin 112 for dissipating the high heat of the coolant circulating in the tube 111 mounted between the tube (Tube, 111) and the tube 111 through which the coolant flows. It is composed of

The upper and lower header tanks 130 and 140 may include headers 120 mounted on upper and lower ends of the tube 111 and upper and lower tanks coupled to the headers 120 to form a flow path for cooling water. 131, 141.

The radiator core 110 and the header 120 is made of aluminum, and the upper and lower tanks 131 and 141 are generally made of plastic.

In addition, the upper and lower tanks 131 and 141 are equipped with inlet and outlet pipes 132 and 142 through which coolant flows in and out, and mounting pins 133 and 143 for fixing the radiator to the vehicle body.

In addition, the upper tank 131 is equipped with a filler neck 134 for replenishing or replacing cooling water from a reservoir tank (not shown).

Radiator tank according to the prior art as described above, as shown in Figure 2, the upper tank 131 is in close contact with the header 120 via the gasket 150, the edge of the header 120 The plurality of tabs 121 formed at predetermined intervals are bent to be coupled to wrap around the edge of the upper tank 131. The coupling method of the upper tank 131 is equally applied to the lower tank 141.

However, the conventional plastic tank combined in this way has the following problems.

First, the plastic tank is brittle due to its brittle nature, so that the cracking phenomenon is easily generated. This cracking phenomenon is also generated by the pressure of the tank or the vibration of the vehicle body when the tab portion of the header is bent.

Second, such cracking may also occur due to the characteristics of the material or injection conditions during injection molding. The cracking of the tank causes leakage of coolant and seriously affects engine cooling.                         

Third, the position and shape of the various accessories (mounting pins, inlet and outlet pipes, pillar necks, etc.) are changed according to the structure of the vehicle body, and these accessories are injection molded together with the tanks, You will need a mold for your tank. Therefore, manufacturing costs are raised, product and mold management costs are increased, and the A / S difficulty is increased when the vehicle is discontinued.

In order to solve the problem of the plastic tank as described above, an aluminum radiator may be used in which the header and the tank are made of aluminum of the same material.

FIG. 3 illustrates an aluminum radiator 200, and includes a radiator core 210 and header tanks 230 and 240 made of aluminum mounted on upper and lower ends of the radiator core 210 and a tube 211. Coupled to the header 220 and the header 220 mounted at the upper and lower ends of the tank 231 and 241 to form a coolant flow path, and to the left and right openings of the header 220 and the tank 231 and 241 assembly. End caps 232 and 242 are both made of aluminum.

Here, the tanks 231 and 241 may be formed in a cup shape without the end caps 232 and 242.

The tanks 231 and 241 are equipped with inlet / outlet pipes 233 and 243 through which coolant flows in and out, and mounting pins 234 and 244 for fixing the radiator to the vehicle body.

In addition, the upper tank 231 is equipped with a filler neck 235 for replenishing or replacing cooling water from a reservoir tank (not shown).                         

According to the aluminum tank of the above structure, it is possible to supplement the disadvantages of the plastic tank, but there are the following problems.

That is, in the case of the plastic tanks 121 and 131, the tank body and various accessories (mounting pins, inlet and outlet pipes, filler necks, etc.) are formed by the injection process, but the aluminum tanks 231 and 241 are the inlet and outlet pipes 233 and 243. ), The mounting pins 234 and 244 and the filler neck 235 cannot be molded by a single machining, and each component must be processed by blazing or screwing. Therefore, the manufacturing process for manufacturing and combining the components is increased, and the inlet and outlet pipes 233 and 243 and the filler neck 235 are easily deformed by external force, and the filler neck 235 and the inlet and outlet pipe 233 are easily deformed. , 243) may leak the cooling water.

Accordingly, the present invention has been made to solve the above problems, by producing a tank using only the advantages of the plastic tank and the aluminum tank, a hybrid radiator tank to prevent the crack of the tank, reducing the manufacturing process to increase the production efficiency The purpose is to provide.

Hybrid radiator tank according to the present invention devised to solve the above technical problem, the upper and lower header (Header) formed with a tab portion at regular intervals on the circumferential surface; Tubes having both ends coupled to the header; Radiating fins provided between the tubes to radiate heat of the cooling water; In the radiator coupled to the header, the upper and lower tanks having a cooling water flow path formed therein, at least one of the upper and lower tanks is a metal body, and injection molded into the body to integrate with the main body Characterized in that it comprises an accessory.

Here, the tank is provided with a cup-shaped metal body having a through hole formed on its surface, and the flange surface of the plastic material is integrally injection molded along the circumferential surface of the body.

And, the tank, the mounting pin (mounting pin) of the plastic material and the inlet and outlet pipe is integrally injection molded in the through-hole of the main body, the filler neck (Filler Neck) is integrally injection molded in the main body of the upper tank It features.

On the other hand, according to the method of manufacturing a hybrid radiator tank according to the present invention, the upper and lower header (Header) formed with a tab portion at regular intervals on the circumferential surface; Tubes having both ends coupled to the header; Radiating fins provided between the tubes to radiate heat of the cooling water; A method of manufacturing a radiator coupled to the headers, the radiator comprising an upper tank and a lower tank having a cooling water flow path formed therein, the method comprising: forming a cup-shaped upper and lower bodies by pressing a metal plate; Forming a plurality of through holes in the upper and lower bodies; Inserting the upper body of the metal material into the injection molding machine and injection molding the flange surface on the circumferential surface of the upper body, and injection molding the mounting pin, the outlet pipe and the filler neck into the through hole of the upper body by plastic material; Inserting the lower body of the metal material into the injection molding machine and injecting a flange surface to the circumferential surface of the lower body, and injection molding the mounting pin and the outlet pipe into the through hole of the lower body by plastic material; And coupling the upper and lower tanks to upper and lower headers, respectively, through a gasket.

Hereinafter, an embodiment according to the present invention will be described in detail with reference to the accompanying drawings.

4 is a schematic exploded perspective view of a radiator provided with a hybrid radiator tank according to the present invention, and FIG. 5 is a cross-sectional view of the hybrid radiator tank according to the present invention.

Hybrid radiator tank according to the present invention, the upper and lower header (Header, 120) formed with a tab portion 121 at regular intervals on the circumferential surface; Tubes (Tube) 111 coupled at both ends to the header; Radiating fins 112 disposed between the tubes 111 to radiate heat of the cooling water; In the radiator coupled to the header 120, the upper and lower tanks (10, 20) having a cooling water flow path formed therein, at least one of the upper and lower tanks (10, 20) of a metal material It characterized in that it comprises a main body (11, 21), and the injection molding molded in the main body (11, 21) and integrated with the main body (11, 21).

Here, the tank is provided with cup-shaped metal bodies 11 and 21 having through-holes formed on the surface thereof, and the flange face 12 made of plastic is integrally injection molded along the circumferential surfaces of the bodies 11 and 21. do.

In the tank, the mounting pins 13 and 23 made of plastic and the inlet and outlet pipes 14 and 24 are integrally injection molded into the through holes of the main bodies 11 and 21. In particular, a filler neck 15 is integrally injection molded in the main body of the main body 11 of the upper tank 10.

That is, the upper tank 10 has a cup shape corresponding to the upper header 121, and the mounting pin 13, the inlet and outlet pipe 14 and the filler neck 15 on the surface of the upper body (11). ) Is provided with a plurality of through-holes are formed, and the flange surface 12 of the plastic material for coupling to the upper header 121 through the gasket 150 is formed on the peripheral surface of the upper body 11 It is.

Here, since the lower tank 20 is configured in a shape substantially corresponding to the upper tank 10 described above, a detailed description thereof will be omitted.

On the other hand, when the injection molding of the upper body and the lower body (11, 21) of the metal material, the resin material covers the upper and lower body (11, 21) locally or entirely.

Here, the inner surfaces of the upper and lower bodies 11 and 21 are preferably thinly coated with plastic to completely block the reaction between the metal material and the cooling water and the possibility of water leakage at the boundary between the resin and the metal.

In addition, the peripheral surfaces of the upper and lower bodies 11 and 21 may be formed in a flange shape, but may be processed into regular or irregular shapes to change the cross section in order to improve the bonding force between the metal material and the plastic.

In addition, the upper and lower main bodies 11 and 21 have a shape in which both ends in the longitudinal direction are opened, and end caps are attached to both ends to form a cup shape, or through the through holes of the upper and lower main bodies 11 and 21. It is also possible to form a structure in which a prefabricated accessory is mounted by screwing or welding.

Hereinafter, the manufacturing method according to the present invention will be described.

6 is a state diagram schematically showing a method of manufacturing a hybrid radiator tank according to the present invention.

First, the metal plate is pressed to shape the outer shapes of the cup-shaped upper and lower bodies 11 and 21.

In this process, a flange may be simultaneously formed on the circumferential surfaces of the upper and lower bodies 11 and 21 coupled to the upper and lower headers 120, and after the upper and lower bodies 11 and 21 are formed, A flange may be formed on the circumferential surfaces of the lower bodies 11 and 21.

Further, in order to increase the bonding force between the flanges of the upper and lower bodies 11 and 21 and the plastic, the flanges may be changed in cross section or processed into regular or irregular shapes.

A plurality of through holes for mounting components such as the mounting pins 13 and 23, the inlet and outlet pipes 14 and 24, and the filler neck 15 to the upper and lower bodies 11 and 21 processed in the cup shape as described above. Form a ball.

Then, the upper main body 11 is inserted into the injection molding machine, and the flange surface 12 is injection molded on the circumferential surface of the upper main body 11, while the mounting pin 13 and the inlet / outlet in the through hole of the upper main body 11 are inserted. The pipe 14 and the filler neck 15 are injection molded from plastic.                     

Then, the lower main body 21 is inserted into the injection molding machine, and the flange surface 22 is injection molded on the circumferential surface of the lower main body 21, while the mounting pin 23 and the inlet / outlet pipe ( 24) is injection molded into plastic.

When injection molding the upper body and the lower body (11, 21) into the injection molding machine as described above, the inner surface of the upper body and the lower body (11, 21) is made of plastic to completely block the reaction or leakage of metal material and cooling water. It is desirable to coat thinly.

Then, the upper and lower tanks (10, 20) produced as described above are in close contact with the header 121 via the gasket 150, respectively, a plurality of formed at regular intervals on the edge of the header 121 The tab part 121 is bent to be coupled to surround the flange surfaces 12 and 22 of the upper and lower tanks 10 and 20.

As described above, only one side of the upper and lower tanks 10 and 20 can be manufactured as a hybrid radiator tank. In addition, the resin may be formed to cover the entire metal body during injection molding. The injection molding may also be molded into other structures such as a flange portion, a mounting pin, an inlet and outlet pipe, and a drain portion.

While the exemplary embodiments of the present invention have been described above by way of example, the scope of the present invention is not limited to the specific embodiments, and those skilled in the art are appropriate within the scope described in the claims of the present invention. It will be possible to change.

As described above, according to the hybrid radiator tank according to the present invention, there is no cracking during the joining process with the header, the problem of deterioration in durability due to calcium chloride during the operation of the vehicle is reduced, and the tank volume is reduced due to the decrease in the thickness of the tank wall. The larger the oil cooler is easy to install, the heat exchange is also performed through the surface of the tank has the effect of improving the cooling efficiency.

In addition, even when the position and shape of various accessories (mounting pins, inlet and outlet pipes, filler necks, etc.) change depending on the structure of the vehicle body, the tank accessories can be injection molded, so that the mold of the tank can be manufactured separately according to the vehicle body structure. There is no need, and not only the rigidity of the vehicle mounting portion is improved, but also the manufacturing cost is reduced, thereby increasing the efficiency of product production.

Claims (4)

Upper and lower headers (Header) 120 having tab portions 121 formed at regular intervals on a circumferential surface thereof; Tubes (Tube) 111 coupled at both ends to the header; Radiating fins 112 disposed between the tubes 111 to radiate heat of the cooling water; In the radiator coupled to the headers 120, the upper and lower tanks 10, 20 having a cooling water flow path formed therein, At least one of the upper and lower tanks 10 and 20 includes a main body 11 and 21 of metal material and an accessory which is injection molded into the main body 11 and 21 and integrated with the main body 11 and 21. Hybrid radiator tank, characterized in that. The method of claim 1, The tank is provided with cup-shaped metal bodies 11 and 21 having through holes formed on the surface thereof, and the flange face 12 made of plastic material is integrally injection molded along the circumferential surfaces of the bodies 11 and 21. Hybrid Radiator Tank. 3. The method of claim 2, The tank is formed by integrally injection molding the mounting pins 13 and 23 and the inlet and outlet pipes 14 and 24 of a plastic material inserted into the through holes of the main bodies 11 and 21, and the upper tank 10. The hybrid radiator tank, characterized in that the filler neck (Filler Neck, 15) is integrally injection molded in the main body (11). Upper and lower headers (Header) 120 having tab portions 121 formed at regular intervals on a circumferential surface thereof; Tubes (Tube) 111 coupled at both ends to the header; Radiating fins 112 disposed between the tubes 111 to radiate heat of the cooling water; In the method of manufacturing a radiator coupled to the header 120, the upper and lower tanks (10, 20) having a cooling water flow path formed therein, Pressing the metal plate to form cup-shaped upper and lower bodies 11 and 21; Forming a plurality of through holes in the upper and lower bodies (11, 21); Inserting the upper body 11 of the metal material into the injection molding machine and injection molding the flange surface 12 on the circumferential surface of the upper body, while the mounting pin 13, the inlet and outlet pipes 14 and the through hole of the upper body 11 and Injection molding the filler neck 15 into a plastic material; Inserting the lower body 21 of the metal material into the injection molding machine and injection molding the flange surface 22 on the circumferential surface of the lower body 21, while the mounting pin 23 and the inlet and outlet pipe ( Injection molding 24) into a plastic material; Coupling the upper and lower tanks (10, 20) to the upper and lower headers (121) via a gasket (150); Hybrid radiator tank manufacturing method comprising a.

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