KR20050004421A - condenser united with receiver dryer - Google Patents

Abstract

PURPOSE: A condenser integrated with a receiver tank is provided to reduce assembling man-hour and simplify a structure by directly connecting the receiver tank to a header of the condenser. CONSTITUTION: A condenser has two header pipes(20,22) separated from each other, a plurality of tubes(24) installed between the header pipes in parallel, a plurality of heat dissipating fins(26) installed between the plurality of tubes, and a receiver tank(28) integratedly combined with one of the header pipes. The receiver tank is divided into a lower body(38) integratedly brazed to the header pipe(22), having communicative holes communicated with the header pipe(22), and an upper body(40) combined with an upper part of the lower body to be brazed.

Description

Condenser united with receiver dryer

The present invention relates to a receiver integrated condenser.

In general, the condenser liquefies by exchanging the high temperature and high pressure refrigerant from the compressor with the outside air, and the receiver is installed between the condenser and the expansion valve to temporarily supply the liquefied refrigerant from the condenser to the evaporator according to the cooling load. In addition to the function of storing and the function of separating the gaseous refrigerant contained in the refrigerant from the condenser, it is possible to reduce the space utilization side and the amount of refrigerant in recent years, and the integrated receiver is integrated into the condenser and the receiver.

As a conventional receiver integrated condenser, Korean Patent No. 10-0376559 has a plurality of tubes (4) interposed in parallel with the heat dissipation fin (2) for radiating the high temperature and high pressure refrigerant compressed in the compressor as shown in FIG. In addition to being installed at equal intervals, the first header pipe 6 and the second header pipe 8 communicate with each other in an upright position on both sides of the plurality of tubes 4, and the first and second header pipes 6 8, a plurality of baffles 10 are fixed to form a coolant flow path while the coolant flows zigzag between the first and second header pipes 6 and 8 through the tube 4, and the first header The pipe 6 is formed with a refrigerant inlet 12 and a refrigerant outlet 14, and the second header pipe 8 is integrally connected with a receiver 18 which communicates through a plurality of connecting pipes 16. .

However, since the conventional receiver integrated condenser connects the receiver 18 to the header pipe 8 through a connection pipe 16 serving as an inlet and outlet of the receiver, an assembly structure is complicated and requires additional connection pipes. There were many problems.

Accordingly, the present invention has been made to solve the above problems, and an object of the present invention is to provide a receiver integrated condenser that can be easily assembled without further processing by connecting the receiver directly to the condenser header.

1 is a cross-sectional view showing the structure of a conventional receiver integrated condenser,

2 is a cross-sectional view showing the structure of a receiver integrated condenser according to the present invention;

Figure 3 is a schematic diagram showing the flow of refrigerant in the receiver integrated condenser of Figure 2,

4 is a detailed view showing the receiver of the receiver integrated condenser according to the present invention;

5 is a cross-sectional view taken along the line A-A in FIG. 4;

6 is a cross-sectional view taken along the line B-B in FIG. 4;

Figure 7 (a) to (e) is a cross-sectional view showing another embodiment of the lower body of the receiver integrated condenser according to the present invention,

8 (a) and (b) are cross-sectional views showing another embodiment of the fixing bracket of the receiver integrated condenser according to the present invention.

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

20: first header pipe 22: second header pipe

24 tube 26 heat sink fin

28: receiver 38: lower body

40: upper body 42: fixing bracket

44: filter 46: cap

48: Desiccant Assembly

The receiver integrated condenser according to the present invention includes two header pipes spaced apart from each other, a plurality of tubes installed in parallel between the two header pipes, a plurality of heat dissipation fins installed between the plurality of tubes, and the two A receiver integrated condenser having a receiver integrally coupled to one of the header pipes, the receiver comprising a communication hole communicating with the header pipe and integrally brazed to the header pipe, and an upper side of the lower body. It is characterized in that divided into the upper body is brazed to be coupled to.

The lower body is provided with a flange portion that is in close contact with the outer circumferential surface of the head pipe to be easily assembled to the header pipe when brazing.

A cap that is screwed after brazing is coupled to the lower portion of the lower body. A filter is attached to the upper portion of the cap, and an O-ring is provided at the lower end of the filter to prevent leakage and maintain airtightness.

The upper body is clogged with the upper side blocked and the lower side is open, and the open portion of the lower side is fitted and fixed to the upper end of the lower body.

The upper body is coupled to the fixing bracket to close the wrap around the outer peripheral surface of the upper portion of the header pipe to increase the stability of the receiver and to facilitate mounting.

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

As shown in FIG. 2, the integrated condenser according to the present invention includes a first header pipe 20 and a second header pipe 22 spaced apart from each other in parallel with each other, and the first header pipe 20 and a second header. Both ends of the pipe 22 are inserted in the slots of the pipe 22 and arranged in parallel with each other, a plurality of heat dissipation fins 26 interposed between the tubes 24 and the second header pipe 22. And a receiver 28 integrally coupled to the head.

A coolant inlet 30 and a coolant outlet 32 are respectively formed on the upper and lower portions of the first header pipe 20, and the lower part of the second header pipe 22 communicates with the receiver 28. Communication holes are formed. The two communication holes are aligned with the communication holes of the receiver described later to form an outlet through which the refrigerant flows from the condenser of the condenser to the receiver and an inlet through which the refrigerant flows from the receiver to the supercooling zone.

Upper and lower ends of the first header pipe 20 and the second header pipe 22 are sealed by a cap member 34, and compartments are formed in the first and second header pipes 20 and 22. A plurality of baffles 36 to be formed are fixed to form a communicating tube 24 and a refrigerant flow path.

The receiver 28 is fitted to the lower body 38 integrally brazed to the lower portion of the second header pipe 22, the upper body of the lower body 38 is fixed by brazing and fixed bracket 42 It is divided into the upper body 40 which is fixed to the upper portion of the second header pipe 22 by. The lower body 38 is manufactured by extrusion, and the upper body 40 is manufactured by forging.

A filter 44 is installed inside the lower body 38, and a cap 46 is screwed to the lower end of the lower body 38. And a desiccant assembly 48 is installed inside the upper body 40. The upper portion of the cap 46 is attached to the filter 44 to trap foreign matters, the lower end of the filter 44 is provided with an O-ring to prevent leakage and maintain airtightness.

4 shows the receiver 28 with the filter, cap and desiccant assembly removed, and FIG. 5 is a cross sectional view of the lower body of the receiver. As shown, the lower body 38 has a communication hole 38b communicating with the condensation region of the condenser and a communication hole 38c communicating with the supercooling region, and easily to the second header pipe 22 when brazing. A flange portion 38d is formed in close contact with the outer circumferential surface of the second head pipe 22 to be temporarily assembled. The flange portion 38d is integrally formed with the cylindrical portion 38a by the connecting portion 38e. The communication holes 38b and 38c are formed in the connecting portion 38e. A female thread 38f is formed inside the cylindrical portion 38a so that the cap 46 is screwed together, and a jaw 38g is formed at the upper end of the cylindrical portion 38a so that the upper body is fitted. have. The said flange part 38d is formed over the full length of the said cylindrical part 38a, and its edge part is bent slightly so that it may be caught and magnetically held by the 2nd header pipe 22. As shown in FIG.

The groove 38f is formed on the inner surface of the flange portion 38d to improve the brazing and assembly properties and to improve the extrudability of the material. During brazing, a welding member is inserted into the flange portion 38d. Since the heat is transferred through the groove 38f, the welding member is easily melted to improve the brazing property. In addition, when the flange portion 38d is temporarily assembled to the header, the groove 38f absorbs the deformation, and thus, the groove 38f can be easily assembled. When the header has a D shape, the flange portion 38d must also have a straight portion and a curved portion. In this case, when the groove 38f is formed at the boundary between the straight line and the curved part, the metal material flows well during the extrusion of the material, and the size of the groove 38f is easily adjusted to reduce the defective rate.

That is, the groove 38f makes the brazing well even at a low temperature, the heat enters the grooves during brazing, so that uniform heat distribution is achieved, and it is easy to work when assembling, and can reduce the defective rate when the raw material is extruded. It works.

On the other hand, the lower body 38 can be modified in various forms as shown in cross section in Figure 7 (a) to (e).

FIG. 7A shows the communication hole 138b communicating with the condensation region of the condenser and the communication hole 138c communicating with the subcooling region being eccentrically formed in the inner hole of the cylindrical portion 38a.

7 (b) and 7 (c) are flanges 38h and 38h 'having mounting holes 38g and 38g' so as to mount the receiver, the cylindrical portion 38a being formed on the opposite side of the flange portion 38d. to be.

7 (d) and (e) show a form in which flanges 138h and 138h 'having mounting holes 138g and 138g' for mounting the receiver are separated by a separate bracket and welded to the cylindrical portion 38a.

The upper body 40 is clogged in the upper side and the lower side of the open tubular portion of the lower open portion is fitted into the upper end of the lower body is fixed. That is, the lower end of the upper body 40 is fitted to the jaw (38g) to be integral with the lower body 38 by brazing. The lower end of the upper body 40 and the upper end of the lower body 38 are brazed using a separate welding member such as a powder or a powder compound from which an ash film is removed. Therefore, the upper body 40 and the lower body 38 of the receiver is made of a material other than the clad ash.

As shown in FIG. 6, the fixing bracket 42 is in close contact with the outer circumferential surface of the second header pipe 22 and the first flange portion 42a which is in close contact with the outer circumferential surface of the upper body 40. The second flange portion 42b is a continuous shape, and end portions of the first and second flange portions 42a and 42b are fitted to the upper body 40 and the second header pipe 22 so as to be caught and self-held. Is slightly bent. The groove 42c is formed inside the second flange portion 42b to improve brazing and assembly properties and to improve extrusion of the material. The effect in which the groove 42c is formed is the same as the effect of the groove 38f.

On the other hand, the fixing bracket 42 can be modified in various forms as shown in the cross section in Figure 8 (a) and (b).

8A shows a form in which the flange 42e having the mounting hole 42d is formed in the first flange portion 42a so as to mount the receiver.

8 (b) shows a cylindrical portion 142a which covers the upper body of the receiver as a whole instead of the first flange portion.

The condenser integrated condenser according to the present invention configured as described above first preassembles the condenser portion while preassembled by fitting the upper body 40 to the lower body 38 of the receiver, and then flanges 38d of the lower body 38. ) Is assembled to the lower part of the second header pipe 22 of the condenser, while the upper body 40 and the upper part of the second header pipe 22 are connected by a fixing bracket 42 to be preassembled, and then brazed in the furnace to condense Integrate the receiver with the receiver.

When temporarily assembling the lower body 38 and the upper body 40, when assembling the lower body 38 and the second header pipe 22 and fixing the upper body 40 and the second header pipe 22 In the case of temporary assembly in (42), a welding member (such as a plate material or a powder compound from which an acid coating has been removed) is put in place without using a separate clad member.

After brazing, the desiccant assembly 48 is inserted through the inner space of the lower body 38 to be installed in the inner space of the upper body 40, and the cap 46 with the filter 44 is attached to the lower body 38. Thread the female thread 38f) to seal the receiver and complete it.

The filter 44 and the cap 46 may be assembled separately. That is, the filter 44 may be inserted into and installed in the middle of the lower body 38, and then assembled by a process of sealing the receiver by screwing the cap 46.

Figure 3 is a schematic diagram for showing the refrigerant flow of the receiver integrated condenser according to the present invention. As shown, the first and second header pipes 20 and 22 are each provided with one or more baffles, each divided into three compartments, and the inside of the condenser forms four refrigerant passages.

First, the refrigerant flowing into the upper compartment of the first header pipe 20 through the refrigerant inlet 30 sequentially flows through the P1, P2, and P3 flow paths, and then heat-exchanges with the outside while undergoing a condensation process. Water is removed by the desiccant assembly 48 installed in the upper body 40 while the receiver is introduced and stored through the lower body 38 of the gas 28, while dust and the like are removed by the filter installed in the lower body 38. After it is removed, it flows out through the refrigerant outlet 32 through the P4 flow path and flows to an expansion valve (not shown).

The P1, P2 and P3 flow passages form a condensation region, and the refrigerant flowing through the P4 flow passage is almost liquid, thus forming a supercooling region. Of course, the refrigerant flows through the P2 and P3 flow paths, so the liquid phase is included to some degree of supercooling. The refrigerant passing through the P3 flow path is changed into a nearly liquid refrigerant through the condensation process in the condensation region. Therefore, the liquid receiver 40 stores almost a refrigerant in a liquid state.

The condensation region may form a refrigerant passage so as to occupy 70 to 80% of the total effective cross-sectional area of the condenser, and the subcooling region may form a refrigerant passage so as to occupy 20 to 30% of the effective cross-sectional area of the condenser.

On the other hand, the number of baffles provided in the first and second header pipes 20 and 22 of the present invention may be changed to form two, three or five refrigerant passages in the condenser.

According to the receiver integrated condenser according to the present invention, the receiver can be connected directly to the condenser header and can be easily assembled without any additional process, thereby reducing the assembling labor and simplifying the structure. After brazing, the desiccant and the filter may be easily inserted to seal the receiver.

Claims (9)

Two header pipes spaced apart from each other, a plurality of tubes installed in parallel between the two header pipes, a plurality of heat dissipation fins installed between the plurality of tubes, and a fluid integrated into one of the two header pipes In the receiver integrated condenser provided with a machine, And the receiver has a communication hole communicating with the header pipe and is divided into a lower body integrally brazed to the header pipe and an upper body coupled to the upper side of the lower body and brazed. The method of claim 1, The lower body has a fluid condenser integrated condenser characterized in that the flange portion is formed in close contact with the outer circumferential surface of the head pipe to be easily assembled to the header pipe when brazing. The method of claim 2, The lower body further comprises a flange for mounting the receiver is a fluid receiver integrated condenser, characterized in that The method of claim 1, The lower part of the lower body is a receiver integrated condenser characterized in that the cap is coupled after the brazing is coupled. The method of claim 1, The upper body is a tubular shape of the upper side is clogged and the lower side is open, the liquid-integrated condenser integrated, characterized in that the lower open portion is fitted to be fixed to the upper end of the lower body. The method of claim 1, The upper body has a receiver integrated condenser is coupled to the fixing bracket having a flange portion close to the wrap around the outer peripheral surface of the upper portion of the header pipe to increase the stability of the receiver and to facilitate mounting. The method of claim 6, The fixed bracket further comprises a flange for mounting the receiver, characterized in that the receiver integrated condenser. The method according to claim 2 or 6, The inner surface of the flange portion is a fluid condenser integrated condenser, characterized in that the groove is formed to improve the brazing and assembling properties while improving the extrudability of the material. The method of claim 1, A condenser integrated condenser, characterized in that the connecting portion of the upper body and the lower body of the receiver, and the connection portion of the receiver and the header pipe is brazed with a welding member interposed.