KR20000030453A - Method to manufacture heater radiator - Google Patents

Abstract

PURPOSE: A method of producing a heat radiator is provided to make easy the preparation and to reduce the cost for preparation by sealing a tube and a head plate by soldering to offer water tightness. CONSTITUTION: A heat radiator has aluminum fins(2) having many louvers(2a) on the face are deposited by multiple folds. The deposited fins are punched to correspond to the position of a tube(1). The tubes are inserted to be arranged in many rows. The gap between the section of the tube and a head plate(3) is sealed by soldering. A penetrated hole(3a) is formed to correspond to the arranged position of the tube and inserting the penetrated hole to each end of the tube. Herein, the combining of the fins and the tubes and the sealing of the tubes and the head plates become convenient. The water tightness of the gap between the tubes and the head plates is kept without additional member such as rubber packing.

Description

Method for manufacture heater radiator

The present invention relates to a heater radiator manufacturing method, and more particularly, to seal the tube and the head plate by a soldering method having watertightness to achieve ease of manufacture and reduction of manufacturing cost.

As is well known, the heater radiator is a member constituting the water cooling circuit to cool the heat generated in the engine of the automobile, the heater radiator according to the prior art has a fin and tube like a conventional heat exchanger, and at the end side of the tube The head plate and the tank are fixed. The fin is formed of a copper material having good thermal conductivity and is formed into a wave shape, and the tube is formed of a copper material, which is formed into a straight shape. The pin is positioned between each tube and brazed between each member.

However, the above-mentioned heater radiator has a disadvantage in that the fin is made of expensive copper material, so it can exert an effect in the heat transfer, but the manufacturing cost is increased, and the inconvenience of having to configure the fin and the tube by brazing one by one. As a heater radiator which has improved such a point, there is an apparatus as shown in Figs. 1 and 2, which will be described as an example of a heater radiator according to the prior art.

The heater radiator is composed of a copper tube 101 in which cooling water flows, arranged in a plurality of rows, and an aluminum louver fin 102 forming a heat exchange part with air while guiding the direction of the air. On the end side of the tube 101, a head plate 103 formed of a zinc plate and having a through hole 103a having a diameter larger than the diameter of the tube 101 at the same position as the arrangement position of the tube 101 is formed. The through hole 103a is positioned to be inserted, has the same width and shape as the inner surface shape of the head plate 103, and corresponds to the through hole 103a at the same position as the through hole 103a of the head plate 103. A rubber packing 104 having a hollow protrusion 104a is positioned so that the protrusion 104a is inserted into the through hole 103a of the head plate 103, and each tube 101 is packed 104. The protrusions 104a of the head plate 103 and the tube 101 Is sealed with watertightness, and the headplate 103 is sealed by a curing method with a tank 105 made of plastic material between the packing 104 and the headplate 103 and the tank 105. The space between) forms the cooling water confluence space.

In order to configure such a heater radiator, first, the louver fins 102 are stacked in a plurality of layers, the tube 101 is drilled into the tube 101, the tube 101 is inserted, and the fins 102 and the tube 101 are expanded. The head plate 103 and the packing 104 are inserted into each end side of the tube 101 in turn, and the second plate is expanded again so that the head plate 103, the packing 104, and the tube 101 are in close contact with each other. Then, the tank 105 is placed on the head plate 103 with the packing 104 interposed therebetween, and the head plate 103 and the tank 105 may be brought into close contact with each other. Here, the use of copper as the material of the tube 101 is due to the ease of expansion.

Therefore, according to the use of the aluminum fins 102, the heat transfer performance can be realized while maintaining a light and low-cost heater radiator equivalently to the copper fins, and the rubber packing 104 is located in the area of concern for leakage of the coolant. The watertightness could be maintained and the reliability could be improved.

However, the heater radiator of such a structure can facilitate the manufacturing in the structure in which the fin and the tube is in close contact, but the rubber packing for preventing the coolant leakage between the tube and the head plate is basically the same as the inner surface of the head plate. As well as the size of the through-hole of the head plate and the projection must be formed in the center of the through hole exactly matching the position of the tube, the shape is very complicated, so the extrusion molding is difficult and the mold cost is very It cost a lot of manufacturing costs, but also had to produce in large quantities, which is difficult to apply to domestic small and medium-sized enterprises produced in small quantities because it is not suitable for resin production, reducing the cost of manufacturing by using aluminum fins. , Top of head plate Working for accurately positioning the packing and in accordance with the two-time job flaring of the tube there is a problem in that the workability deteriorates.

The present invention has been made to solve the above problems, by inserting a tube of copper material in a plurality of laminated aluminum fins and close the pin and the tube, and inserting the head plate on each end side of the tube of the tube By fixing the end and the head plate by soldering, it is possible to maintain the watertightness without a separate member that prevents leakage of the coolant, while providing a heater radiator manufacturing method that enables the production of light and low-cost heater radiators through the use of aluminum fins. The purpose is.

In another aspect, the purpose is to enable the production of a small amount of heater radiator to be smoothly applied to domestic SMEs, while providing the convenience of the after-sales service.

1 is an exploded perspective view of a heater radiator for a vehicle according to the prior art.

Figure 2 is a cross-sectional view of a combined heater radiator for automobiles according to the prior art.

Figure 3 is an exploded perspective view of a heater radiator for automobiles according to the present invention.

4 is a cross-sectional view of the coupling of the heater radiator for automobiles according to the present invention;

(a) is the case where soldering method is applied.

(b) is where currying is applied.

*** Explanation of symbols for the main parts of the drawing ***

1: tube 2: pin

2a: louver 3: headplate

3a: through hole 4: tank

5: packing

EMBODIMENT OF THE INVENTION Hereafter, this invention is actualized by the Example disclosed.

Figure 3 is an exploded perspective view of a heater radiator for automobiles according to the present invention, Figure 4 is a cross-sectional view of the coupling of the heater radiator for automobiles according to the present invention, (a) is a soldering method is applied, (b) is a curry method If applicable.

The heater radiator according to the present embodiment is an aluminum louver fin (2) and a copper tube in a heater radiator for automobiles consisting of a tube (1), a fin (2), a head plate (3), a tank (4) (1) is applied similarly to the prior art, but differs from the prior art in the sealing method of each member for preventing leakage of cooling water.

That is, the heater radiator according to the present invention is an aluminum fin (2) is formed with a plurality of louvers (shape like a dormer in the air inflow direction) 2a on the surface as shown in Figs. , Stacked in multiple layers, perforated stacked pin (2) to the position of the tube (1) to insert the tube (1) arranged in a number of rows and then tube (1) by expanding the machine to the pin (2) And the tube 1, the head plate 3 is inserted into each end side of the tube 1, and the end of the tube 1 and the head plate 3 are sealed by soldering. In (3), a through hole 3a is formed in advance in accordance with the arrangement position of the tube 1 so that the through hole 3a is inserted into each end of the tube 1.

This simplifies the process of joining the fins 2 and the tube 1 and sealing the tube 1 and the head plate 3, thus simplifying the workability and providing a separate packing such as a rubber packing that prevents coolant leakage. The watertightness between the tube 1 and the head plate 3 can be maintained without a member so that the reliability of the product can be brought to the same level as the heater radiator according to the prior art even in the state of reducing the cost burden due to the rubber packing. When using the fin (2) of the plurality of louvers (2a) formed on the surface of the fin (2) to guide the flow direction of air passing through the surface of the fin (2) in the direction of the louver (2a) so that the air between the louver (2a) The heat transfer performance can be improved by lengthening the air passing distance, so that the heat transfer performance can be sufficiently compensated for, which is about 10% lower than that of the copper material, so that the heat transfer performance is equivalent to that of the copper fin (2). While things become possible unique, lightweight aluminum production that is easy and inexpensive to produce lightweight, low prices heater radiator use it is obvious.

On the other hand, in the coupling of the head plate 3 and the tank 4, as shown in Figure 4, the head plate 3 and the tank 4 may be made of a brass material to seal each member by soldering. The head plate 3 is made of a tin plate and the tank 4 is made of plastic injection molding, and the head plate 3 is formed between the tank 4 and the head plate 3 with a rubber packing 5 interposed therebetween. The edge portion of 3) may be bent and crimped in the tank direction to seal the gap between the members by curing.

At this time, the head plate (3) is soldered with the copper tube (1), so any material can be made of metal, but considering the heat transfer performance and cost in soldering the head plate (3) and the tank (4) When the method is applied, it is preferable to configure the brass is easy to solder, and when the curing method is applied to the coupling of the head plate 3 and the tank 4 to some degree of rigidity and the tube (1) Since soldering performance is required, it is preferable to configure a tin plate having superior rigidity and soldering performance than a conventional zinc plate.

Here, the rubber packing 5 used in the coupling of the head plate 3 and the tank 4 only needs to be interposed only on the contact surface of the head plate 3 and the tank 4 so that the shape of the rubber plate 5 can be simply formed by a rubber band type. The watertightness between the head plate 3 and the tank 4 may be improved by the soldering method or the curling method as described above, so that leakage of the cooling water does not occur, thereby improving the reliability of the product.

In addition, the heater radiator completed as described above is applied to a vehicle to serve to cool the engine as well as to heat the inside of the vehicle.

As described above, the present invention compensates the heat transfer performance that is lower than that of copper by forming a plurality of louvers on the fin surface while using a fin made of aluminum which is light in material, low in cost, and easy to manufacture. Since the radiator can be realized and the tube and the head plate are sealed by soldering, watertightness can be maintained without a separate member such as rubber packing, thereby reducing manufacturing cost and improving workability and productivity. It is possible to manufacture a small amount of heater radiator, so it can be applied to domestic small and medium companies and can be easily repaired in the domestic A / S in the future.

Claims (3)

A copper tube (1) in which a coolant flows inside, a louver fin (2) made of a plate-shaped aluminum material which is inserted in contact with a side surface of the tube (1) and forms a heat transfer surface while guiding air, and the tube (1) In the heater heater radiator for automobile composed of a head plate (3) sealed at each end of the), and a tank (4) coupled to the head plate (3) to form a cooling water confluence space into the space between the members, The plate-shaped aluminum louver fins 2 are laminated in multiple layers, and the tube 1 of copper material is inserted into the stacked fins 2 from above and arranged in a plurality of rows. ), The pin 2 and the tube 1 are brought into close contact with each other, and the head plate 3 is inserted into each end side of the tube 2, and then the end of the tube 1 and the head plate ( 3) The heater radiator manufacturing method characterized by sealing between them by soldering. The method of claim 1, And the head plate (3) and the tank (4), each made of brass, to seal between each member by soldering. The method of claim 1, The head plate 3 is made of a tin plate and the tank 4 is made of a plastic injection resin material, with a rubber material packing 5 interposed between the tank 4 and the head plate 3. And bending the edge portion of the head plate (3) in the direction of the tank (4) to seal the gap between the members by curing.