KR20050007517A - Heater core for car air-conditioner - Google Patents

Abstract

PURPOSE: A heater core for an air conditioner of a vehicle is provided to flow coolant actively through the uniform coolant passage by assembling the header tank with the header evenly and entirely, and to manufacture the tank and the header conveniently by extruding the tank and the header and cutting the extruded material. CONSTITUTION: A heater core is composed of first and second header tanks(10) having a tank(11), a flat header(12) combined with the opening part of the tank and composed of a flange(12a) bending longitudinally and end caps combined with the tank and header assembly, plural tubes arranged between the first and second header tanks, radiating fins installed between the tubes, and a coolant inlet pipe and a coolant outlet pipe installed to the end caps of the first and second header tanks. A first restriction sill(11a) is bent inward in the lower part at the side wall of the tank, and a fitting sill(12c) is formed at the outer wall of the flange of the header and fitted to the first restriction sill. A second restriction sill(11b) is formed in the upper part of the first restriction sill to regulate insertion of the header by fitting the upper part of the flange of the header.

Description

Heater Core for Automotive Air Conditioning Units {HEATER CORE FOR CAR AIR-CONDITIONER}

The present invention relates to a heater core for an automotive air conditioner, and more particularly, to a heater core for an automotive air conditioner, which maintains a flow path inside a header tank in the same cross-section over all parts and allows the length of the header tank to be changed freely. It is about.

In general, the air conditioning system is composed of ventilation system, air conditioning and heating system, and it creates a comfortable environment for the passengers even under various climates and driving conditions, and removes the blur and frost on the windows to secure the driver's watch and operate safely. The purpose is to make it possible.

The heating device heats the air passing through the heater core with the high temperature cooling water flowing inside the heater core and raises it to a high temperature while the high temperature cooling water from the engine passes through the heater core and back to the engine. It is to heat the room by supplying it to the room.

The cooling device lowers the temperature by exchanging the air passing through the evaporator with the refrigerant flowing inside the evaporator while the refrigerant compressed at a high temperature and high pressure in the compressor circulates the condenser, the expansion valve, and the evaporator, thereby lowering the temperature and supplying the low temperature air in the vehicle. It is to cool the inside of the car.

The heater core is classified into a U-TURN method and a one-way flow type according to the cooling water flow method. The basic configuration of the heater core is irrespective of the method, as shown in FIG. 1. , The first and second header tanks (1,2) and the first and second header tanks (1,2) are arranged side by side and both ends of the first and second header tanks (1,2) A plurality of tubes 3 respectively inserted and connected, and a plurality of heat dissipation fins 4 respectively installed between the tubes 3, a coolant inlet tube 5 and a coolant outlet tube 6 for circulation of the coolant. It consists of. 1 shows a one-way flow method. In the one-way flow method, the coolant inlet pipe 5 is installed in the first header tank 1, and the coolant outlet pipe 6 is installed in the second header tank 2.

On the other hand, in the U-turn system, although not shown in the drawing, a baffle for dividing the internal space is installed inside the first header tank or the second header tank, and the coolant inlet pipe and the coolant outlet pipe are respectively divided in the portion divided by the baffle. Is installed.

The U-turn method and the one-way flow method according to the prior art have respective advantages and disadvantages. That is, the U-turn method has a high heating performance because the heat transfer area is wide because the length of the flow path is relatively long, but the flow rate of the cooling water is small because the pressure drop is large at the point where the U-turn is turned. In addition, the one-way flow method has a relatively low pressure drop because the cooling water flows straight, thereby increasing the flow rate of the cooling water, but having a simple structure, but has a disadvantage in that heating performance is lowered because the length of the flow path is short.

On the other hand, regardless of the flow of the cooling water, the first header tank 1 has a tank 1a having a roughly cross-sectional view, a header having a plurality of tube insertion holes formed in a plate shape and coupled to an opening of the tank 1a. (1b), the end cap (1c) is coupled to both sides of the opening of the tank (1a) and the header (1b) to seal it. Since the structure of the second header tank 2 is the same as that of the first header tank 1, a detailed description thereof will be omitted.

The tank 1a and the header 1b are usually processed by press.

However, the heater core for a vehicle air conditioner according to the prior art has the following problems.

Since the tank 1a and the header 1b of the header tank 1 are joined by a simple insertion of each other, the mating surface of the tank 1a and the header 1b may not be constant. That is, the cooling water flow path inside the header tank 1 may not have the same cross-sectional area over the entire portion, and thus the cooling water may not evenly pass through all the tubes. In addition, if the tube insertion hole of the header 1a is not constant, It cannot be easily assembled and the degree of insertion of the tube 3 into the header 1a can vary.

In addition, since the tank 1a and the header 1b are manufactured by pressing, the plate cut to a predetermined length is manufactured by pressing. Therefore, in order to change the length of the tank 1a and the header 1b, the plate having the changed length must be cut first. There is a disadvantage that the change is cumbersome, and thus, the work for increasing the quantity of the tube 3 becomes complicated.

The present invention is to solve the above problems, it is an object of the present invention to provide a heater core for a vehicle air conditioner that can have the same coupling surface across the tank and the header of the header tank.

Another object of the present invention is to be able to freely change the length of the tank and the header.

1 is a cross-sectional view of a heater core for a vehicle air conditioner according to the prior art.

2A to 2C are front views, an exploded perspective view and a side sectional view of a heater core for an automotive air conditioner according to Embodiment 1 of the present invention.

3A and 3B are exploded perspective and side cross-sectional views of a header tank applied to a heater core for an automotive air conditioner according to Embodiment 2 of the present invention.

4A and 4B are an exploded perspective view and a bottom view of a header tank applied to a heater core for an automotive air conditioner according to Embodiment 3 of the present invention.

<Description of Symbols for Major Parts of Drawings>

10: first header tank, 11: tank

11a, 11b: Jaw, 11c: Insertion groove

12: header, 12a: flange

12b: tube insertion hole, 12c: locking jaw

12d: seating jaw, 12e: protrusion

20: second header tank, 30: tube

40: heat radiating fin, 50: cooling water inlet pipe

60: cooling water outlet pipe,

Heater core for a vehicle air conditioner according to the present invention for achieving the object as described above, the tank having a roughly cross-sectional design, plate-shaped header coupled to the opening of the tank and bent in the longitudinal direction on both sides and First and second header tanks having end caps coupled to the left and right openings of the tank and the header assembly; A plurality of tubes arranged side by side between the first and second header tanks; A heat dissipation fin installed between the tubes; And a cooling water inlet tube and a cooling water outlet tube respectively installed at one end caps of the first and second header tanks.

The first regulatory jaw is formed to be bent inwardly at each of the lower end portions of the both side walls of the tank, and a locking step is formed on the outer walls of both flanges of the header.

A second regulation jaw may be further formed on the upper side of the first regulation jaw to catch the upper surface of the flange of the header to restrict the insertion of the header.

In addition, the heater core for a vehicle air conditioner according to the present invention, a tank made of a plate-shaped, bent in a roughly shaped form and the header is coupled to the opening having a plurality of tube holes and the left and right of the tank and the header assembly First and second header tanks having end caps coupled to both openings; A plurality of tubes arranged side by side between the first and second header tanks; A heat dissipation fin installed between the tubes; And a coolant inlet tube and a coolant outlet tube installed at one end caps 13 and 23 of the first and second header tanks, respectively.

A seating jaw is formed in each of both side walls of the header, so that the tank is joined.

The heater core for an automotive air conditioner according to the present invention includes a tank having a roughly cross section, a plate-shaped header coupled to an opening of the tank, and a first cap having an end cap coupled to both left and right openings of the tank and the header assembly. A second header tank; A plurality of tubes arranged side by side between the first and second header tanks; A heat dissipation fin installed between the tubes; And a cooling water inlet tube and a cooling water outlet tube respectively installed at one end caps of the first and second header tanks.

Insertion grooves are formed in the lower end of both side walls of the tank along the longitudinal direction, and the projections are inserted into the insertion grooves along the longitudinal direction at both left and right ends of the header.

The features and advantages of the present invention will become more apparent from the following detailed description based on the accompanying drawings. Prior to this, terms or words used in the present specification and claims are defined in the technical spirit of the present invention based on the principle that the inventor can appropriately define the concept of the term in order to explain the invention in the best way. It must be interpreted to mean meanings and concepts.

<Example 1>

As shown in FIG. 2A, a heater core for an automotive air conditioner according to the present embodiment includes first and second header tanks 10 and 20 and parallel first and second header tanks 10 and 20. A plurality of tubes 30, both ends of which are installed in fluid communication with each other, a plurality of heat dissipation fins 40 interposed between the tubes 30, a cooling water inlet tube 50 for circulation of cooling water, and It may be made including a coolant outlet pipe (60).

As shown in FIGS. 2B and 2C, the first header tank 10 includes a tank 11 having a roughly cross-section and a flange 12a at both sides thereof in a plate shape, and a plurality of tube insertion holes ( 12b) (shown in FIG. 2B) is composed of a plate-shaped header 12 coupled to the tank 11 and an end cap 13 coupled to both openings of the tank 11 and the header 12 assembly, respectively. Can be. In the header tank 10 according to the present embodiment, the coupling degree of the tank 11 and the header 12 is uniform so that the cooling water flow path formed by the combination of the tank 11 and the header 12 has the same cross-sectional area over the entire portion. For example, both side walls of the tank 11 may be provided with first and second regulating jaws 11a and 11b at regular intervals from the ends, respectively, and both flanges of the header 12. A locking jaw 12c that is caught between the first and second regulating jaws 11a and 11b may be provided at 12a. At this time, the locking jaw (12c) is prevented from being separated by the first regulatory jaw (11a) while the upper surface of the flanges (12a) of the header 12 is restricted insertion of the header 12 by the second regulatory jaw (12b) Can be.

The latching jaw 12c of the header 12 may be processed by embossing or the like, and may be formed over the entire portion along the longitudinal direction of the flange 12a. As shown in FIG. It may be formed.

The tank 11 and the header 12 of the first header tank 10 according to the present embodiment may be manufactured through an extrusion process. When the manufacturing method of the header 12 is demonstrated, after extruding a board | plate material to the shape of the header 12, it can cut | disconnect to required length, and the tube insertion hole 12b can be punched and the locking step 12c can be shape | molded.

As shown in FIG. 2A, the coolant inlet pipe 50 is installed in the end cap 13 so as not to deform the tank 11 and the header 12, that is, to share the tank 11 and the header 12. The coolant outlet pipe 60 may also be installed in the end cap 23 of the second header tank 20.

Although only the first header tank 10 has been described so far, the second header tank 20 has the same structure as the first header tank 10, and thus, a detailed description thereof will be omitted.

According to the heater core for the automotive air conditioner according to the present embodiment, the two flanges (12a) of the header 12 to the opening of the tank 11 for coupling the tank 11 and the header 12 of the header tank 10 When inserted into the flange 12a, the locking jaw 12c passes over the first regulatory jaw 11a of the tank 11, and the locking jaw 12c extends the first and second regulatory jaws 11a and 11b. ), The locking jaw 12c is caught by the first regulation jaw 11a by the elastic force of the flange 12a, and the upper surface of the flange 12a is caught by the second regulation jaw 11b. Insertion is stopped.

Therefore, since the engagement surface of the tank 11 and the header 12 is the same, the cooling water flow path inside it will have the same cross-sectional area over the whole part. In addition, since the tank 11 and the header 12 are extruded and can be cut and used to a desired length, the length can be freely changed.

<Example 2>

The heater core for an automotive air conditioner according to the present embodiment has the same configuration as that of the first embodiment, and only the assembly structure of the tank and the header is new, and the same parts as those of the first embodiment will be omitted. Hereinafter, only the novel configuration will be described by the present embodiment.

As shown in FIGS. 3A and 3B, according to the heater core for the automotive air conditioner according to the present embodiment, the tank 11 is formed in a plate shape, and the header 12 is formed in a substantially de-shaped cross section to form a plate shape in its opening. It comprises a header 12 to which the tank 11 is coupled.

In this embodiment, the mounting jaw 12d is formed inside both side walls of the header 12 so that the mating surfaces of the tank 11 and the header 12 are the same throughout.

According to the present embodiment, when the bottom surface of the tank 11 is inserted in close contact with the seating jaw 12d of the header 12, the cooling water flow path between the tank 11 and the header 12 has the same cross-sectional area over the entire portion. .

<Example 3>

The heater core for an automotive air conditioner according to the present embodiment has the same configuration as that of the first embodiment, and only the assembly structure of the tank and the header is new, and the same parts as those of the first embodiment will be omitted. Hereinafter, only the novel configuration will be described by the present embodiment.

As shown in FIGS. 4A and 4B, according to the heater core for the automotive air conditioner according to the present embodiment, the tank 11 is formed in a substantially depressed cross section, and the header 12 is formed in a plate shape to open the opening of the tank 11. Is coupled to. In this case, insertion grooves 11c are formed at lower ends of both side walls of the tank 11 so that the mating surfaces of the tank 11 and the header 12 are the same throughout, and insertion grooves are formed at both side walls of the header 12. A projection 12e fitted to 11c is formed.

As shown in the drawing, a plurality of insertion grooves 11c and protrusions 12e may be formed at regular intervals, and may be coupled to each other over the entire lengthwise portions of the tank 11 and the header 12. Only one of the structures may be formed.

According to this embodiment, since the engagement surface of the tank 11 and the header 12 is the same, the cooling water flow path between them will have the same cross-sectional area over the whole part.

As described above, according to the heater core for an automotive air conditioner according to the present invention, since the coupling degree of the header and the tank constituting the header tank is the same throughout, the cooling water flow path inside the header tank has a uniform volume, Since the insertion degree of all tubes is the same, the flow of coolant is smooth and the assembly of the tubes is easy.

Then, the tank and the header are extruded to produce the tank and the header by cutting the extrudate to a desired length, so that the length can be freely changed, and thus, the number of tubes can be easily adjusted.

While the invention has been described and illustrated in connection with a preferred embodiment for illustrating the principles of the invention, the invention is not limited to the configuration and operation as such is shown and described. Rather, those skilled in the art will appreciate that many modifications and variations of the present invention are possible without departing from the spirit and scope of the appended claims. Accordingly, all such suitable changes and modifications and equivalents should be considered to be within the scope of the present invention.

Claims (4)

The tank 11, the plate-shaped header 12 is coupled to the opening of the tank and the flange 12a is bent along the longitudinal direction on both sides and the end cap 13 is coupled to the left and right openings of the tank and the header assembly, First and second header tanks (10,20) having 23; A plurality of tubes 30 arranged side by side between the first and second header tanks; A heat dissipation fin 40 disposed between the tubes; And a cooling water inlet tube 50 and a cooling water outlet tube 60 installed at one end caps 13 and 23 of the first and second header tanks, respectively. The first regulatory jaw (11a) is bent inwardly formed at the lower end of both side walls of the tank, respectively, the vehicle air conditioning apparatus characterized in that the engaging jaw (12c) is caught on the outer wall of both flanges of the header is formed Heater core. The method of claim 1, A heater core for an automotive air conditioner, characterized in that a second regulation jaw (11b) is further formed on the upper side of the first regulation jaw to restrict the insertion of the header. A tank 11 made of a plate shape, the header 12 is bent in a roughly shaped shape and the header 12 is coupled to the opening having a plurality of tube holes and the end cap coupled to the left and right openings of the tank and the header assembly ( First and second header tanks 10 and 20 having 13 and 23; A plurality of tubes 30 arranged side by side between the first and second header tanks; A heat dissipation fin 40 disposed between the tubes; And a cooling water inlet tube 50 and a cooling water outlet tube 60 installed at one end caps 13 and 23 of the first and second header tanks, respectively. A heater core for a vehicle air conditioner, wherein a seating jaw (12d) is formed in each of both side walls of the header to join the tank. First and second header tanks 10 having a tank 11, a plate-shaped header 12 coupled to an opening of the tank, and end caps 13 and 23 coupled to both left and right openings of the tank and the header assembly. 20); A plurality of tubes 30 arranged side by side between the first and second header tanks; A heat dissipation fin 40 disposed between the tubes; And a cooling water inlet tube 50 and a cooling water outlet tube 60 installed at one end caps 13 and 23 of the first and second header tanks, respectively. Insertion grooves (11c) are formed in the lower end of the both side walls of the tank along the longitudinal direction, the vehicle air conditioner characterized in that the projections 12e are inserted into the insertion grooves along the longitudinal direction on both left and right ends of the header. Heater core.