KR20080100924A - Manufacturing method of receiver tank for receiver drier - Google Patents

Abstract

A receiver tank manufacturing method of a receiver drier is provided to reduce the cost and manufacturing process of material and to easily assemble a cap using a bottom cap assembly unit. The receiver tank manufacturing method of a receiver drier is composed of steps for: manufacturing a main pipe(21) in which the thickness is fixed and one end is blocked by forging; forming a reentrant protrusion(22) which is pitted along the outer circumference and is protruded along the inner circumference in the lower part of the main pipe by rolling; forming a drier supporting part(24) by closely adhering the recess portion after compressing the protruded portion the reentrant protrusion by forging; and forming a bottom cap assembly(26) pitted along the inner circumference and protruded along the other end outer circumference of the main pipe by rolling.

Description

Manufacturing method of receiver tank for receiver drier

1 is a block diagram showing a condenser combined with a conventional receiver dryer;

Figure 2 (a) to (d) is a manufacturing process diagram showing a receiver tank manufacturing method of the receiver dryer according to the present invention,

Figure 3 is a perspective view showing a cross section by cutting the receiver tank manufactured in accordance with the manufacturing process of Figure 2 in the longitudinal direction,

4 is a state in which the lower cap is assembled to the receiver tank of FIG.

<Explanation of symbols for the main parts of the drawings>

20: receiver tank 21: basic tube

22: urine indentation part 24: desiccant support

26: lower cap assembly

The present invention relates to a method for manufacturing a receiver tank of a receiver drier.

The receiver dryer is installed between the condenser and the expansion valve to temporarily store the liquid refrigerant flowing from the condenser so that the required amount can be supplied to the evaporator according to the cooling load, and supply the complete liquid refrigerant to the expansion valve and prevent condensation from the condenser. It serves to remove foreign substances such as moisture or bubbles contained in the refrigerant to absorb moisture in the gaseous state. Recently, the receiver drier is located on its channel, not the outlet of the condenser, and is supplied until the liquid zone of the refrigerant is developed in the receiver drier, and the lower side of the receiver drier is used as a subcooling zone where the liquid is cooled. To keep it.

1 shows a condenser incorporating a conventional receiver drier. As shown, between the first and second tanks (2) (3), which are installed to face each other, the plurality of tubes (4) for communicating the tank (2) (3), between the tubes (4) Heat dissipation fins 5 interposed therebetween, inlet and outlet pipes 6, 6a provided in the first tank 2, baffles 7 provided in the tanks 2, 3, and the first It comprises a receiver dryer 10 in communication with the two tank (3).

The receiver dryer 10 includes a receiver tank 11 communicating with the second tank 3, upper and lower caps 12 and 13 sealing upper and lower ends of the receiver tank 11, and The desiccant 14 and the filter 15 which are provided in the receiver tank 11 are provided.

The receiver dryer 10 performs a brazing process in a state in which the receiver tank 11 to which the upper cap 12 is coupled is temporarily assembled to the second tank 3. After the brazing is connected, the desiccant 14 and the filter 15 are inserted into the receiver tank 11, and then the lower cap 13 is screwed to the lower end of the receiver tank 11 to seal the receiver tank 11. To complete the assembly.

The receiver tank 11 is bumped at one end using an extruded pipe having both sides and a mandrel inserted into the extruded pipe, as disclosed in Korean Patent No. 0558016 and Korean Laid-Open Patent No. 2005-0055802. ) By collecting the flesh through the processing, it is manufactured by forming a screw thread for screwing the lower cap 13 and a desiccant support portion for supporting the desiccant (14).

However, the receiver tank of the conventional receiver dryer is manufactured by forming a flesh for processing a thread on one end of a pipe that is open on both sides through extrusion molding, and then processing the thread and covering the other end of the pipe with a separate cap. Because it is manufactured by the method, the cost of the material increases, as well as a lot of manufacturing and assembly process, there was a problem in that it is inconvenient to assemble the upper, lower cap.

Accordingly, the present invention has been made to solve the above problems, an object of the present invention is to provide a method for manufacturing a receiver tank of a receiver dryer that can reduce the cost and manufacturing process of the material and can be assembled simply and easily. have.

In the receiver tank manufacturing method of the receiver dryer according to the present invention, after manufacturing a basic pipe with a constant thickness and closed at one end through forging, it is recessed along the outer circumferential surface and protruded along the inner circumferential surface at the lower portion of the basic pipe through rolling. After forming the concave indentation part, press the protruding part of the concave convex part through forging process to form the desiccant support part by close contact with the concave part, and then protrude along the outer circumferential surface of the other end of the base pipe through the forging process and indent it along the inner circumferential surface. Characterized by forming a lower cap assembly.

Hereinafter, with reference to the accompanying drawings will be described an embodiment of the present invention;

The present invention is a method for manufacturing a receiver tank by forging processing and rolling processing.

As shown in Fig. 2 (a), first, a basic tube 21 having a uniform thickness and one end portion 21a is closed by forging.

Next, as shown in FIG. 2 (b), a concave protrusion 22 is formed in the lower portion of the base tube 21 through the rolling process and protrudes along the inner circumferential surface.

Next, as shown in Fig. 2 (c), the protruding portion (inner side) of the concave protrusion 22 is pressed by forging to form the desiccant support part 24 in close contact with the concave portion (outer side). .

Next, as shown in (d) of FIG. 2, the receiver tank is completed by forming a lower cap assembly portion 26 which protrudes along the outer peripheral surface of the other end of the base tube 21 and is recessed along the inner peripheral surface through rolling. do.

In this case, the refrigerant inlets 28 and 28 may be formed by cutting before and after forming the concave protrusion 22, before and after forming the desiccant support 24, or before and after forming the lower cap assembly 26. Can be.

A desiccant made of a pack (not shown) is caught on the upper surface of the desiccant supporter 24, and a filter (top) of the lower cap described later is applied to the bottom of the desiccant supporter 24.

3 is a perspective view showing a cross section of the receiver tank 20 manufactured according to the manufacturing process of Figure 2 by cutting in the longitudinal direction. The lower cap 30 is pushed through the lower part of the receiver tank 20 manufactured by the manufacturing method so that the lower cap 30 is hooked to the lower cap assembly 26 of the receiver tank. 4 shows a state in which the lower cap 30 integrated with the filter 32 is assembled. At this time, the O-ring 34 coupled to the outer circumferential surface of the lower cap 30 prevents leakage of the refrigerant, and the snap ring 36 coupled to the lower circumferential surface of the lower cap 30 is connected to the lower cap assembly portion 26. Hanging to prevent the separation of the lower cap (30).

Since the receiver tank manufactured as described above does not have an upper cap, the number of parts is reduced, and a process of collecting flesh and a thread forming process for forming a screw part and a desiccant support part for assembling the lower cap is unnecessary, thus reducing the cost and manufacturing process of the material. The cap can be assembled easily and easily.

According to the receiver tank manufacturing method of the receiver dryer according to the present invention, it is possible to reduce the cost and manufacturing process of the material and to assemble the cap simply and easily.

Claims (1)

In the method for manufacturing a receiver tank of the receiver dryer, Through the forging process to produce a basic tube 21 of constant thickness and one end is blocked, Through the rolling process to form a concave projection 22 indented along the outer circumferential surface and protruded along the inner circumferential surface in the lower portion of the basic pipe, After pressing the protruding portion of the indentation protrusion through the forging process to form a desiccant support portion 24 by close contact with the indentation portion, A method of manufacturing a receiver tank of a receiver dryer, characterized by forming a lower cap assembly portion (26) which protrudes along the outer circumferential surface of the other end of the base tube and is recessed along the inner circumferential surface through rolling.

Images