KR20100081089A

KR20100081089A - Condenser united with receiver dryer

Info

Publication number: KR20100081089A
Application number: KR1020090000367A
Authority: KR
Inventors: 석경수
Original assignee: 주식회사 두원공조
Priority date: 2009-01-05
Filing date: 2009-01-05
Publication date: 2010-07-14

Abstract

PURPOSE: A liquid receiver integrated condenser is provided to prevent a refrigerant leak by preventing paste or sludge from being attached on the inner surface of a lower body. CONSTITUTION: A liquid receiver integrated condenser comprises two header pipes, multiple tubes, multiple heat radiating fins, and a liquid receiver. The tubes are parallelly installed between the header pipes. The heat radiating fins are installed between the tubes. The liquid receiver is integrally coupled to one header pipe and is divided into a lower body(114) and an upper body(115). The lower body has an upper pipe hole(114b) and a lower pipe hole(114c) and is integrally coupled to the header pipes. The upper body is integrally coupled to the top of the lower body.

Description

Condenser united with receiver dryer

The present invention relates to a receiver integrated condenser, and more particularly to a lower body of a receiver in 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 refrigerant load. In addition to the function of storing and to separate the gas phase refrigerant contained in the refrigerant from the condenser, recently the receiver integrated type condenser and the receiver integrated to reduce the space utilization side and the amount of refrigerant has been widely used.

As a conventional receiver integrated condenser, Korean Patent No. 10-0528244, as shown in Figure 1, the first header pipe 1 and the second header pipe (2) installed parallel to each other and the first, Both ends of the header pipe 1 and the second header pipe 2 are inserted into the slots, and a plurality of tubes 4 disposed in parallel with each other, and a plurality of heat dissipation fins 6 interposed between the tubes 4. And a receiver 8 integrally coupled to the second header pipe 2.

A coolant inlet 10 and a coolant outlet 11 are respectively formed on the upper and lower portions of the first header pipe 1, and the lower part of the second header pipe 2 communicates with the receiver 8. Communication holes are formed. These two communication holes are aligned with the pipe-type holes of the receiver, which will be described later, and form an outlet through which the refrigerant flows from the condenser to the receiver and an inlet through which the refrigerant flows into the subcooling region.

Upper and lower ends of the first header pipe 1 and the second header pipe 2 are sealed by a cap member 12, and compartments are formed inside the first and second header pipes 1 and 2. A plurality of baffles 13 forming the plurality of fixed baffles 13 are formed to communicate with the tube 4 and four refrigerant passages P1, P2, P3, and P4. The P1, P2, and P3 channels form a condensation region, and the P4 channel forms a supercooling region.

The receiver 8 has a lower body 14 integrally brazed to the lower portion of the second header pipe 2, and is fixed to the upper side of the lower body 14 and fixed by brazing, while the fixing bracket 16 is fixed thereto. It is divided into the upper body 15 which is fixed to the upper portion of the second header pipe (2).

The lower body 14 is manufactured by extrusion, and the upper body 15 is manufactured by forging. A filter 17 is installed inside the lower body 14, and a cap 18 is screwed to the lower end of the lower body 14. In addition, a desiccant assembly 19 is installed inside the upper body 15. The upper side of the cap 18 is attached to the filter 17 to trap foreign matters, the lower end of the filter 17 is provided with an O-ring to prevent leakage and maintain airtightness.

The lower body 14, as shown in Figs. 2 and 3, has a conduit-shaped hole 14b communicating with the condensation area of the condenser and a conduit-shaped hole 14c communicating with the supercooling area, while brazing. It is provided with a flange portion (14d) in close contact with the outer circumferential surface of the second header pipe (2) to be easily assembled to the second header pipe (2). The flange portion 14d is formed integrally with the cylindrical portion 14a by the connecting portion 14e. The conduit-shaped holes 14b and 14c are formed in the connecting portion 14e. The pipe-shaped holes 14b and 14c are formed in the horizontal direction.

By the way, in the conventional receiver integrated condenser configured as described above, when brazing the lower body 14 to the second header pipe 2, a part of the filler metal (liquid paste) causes the hole of the pipe-type hole 14b and 14c to be opened. Through the inside of the cylindrical portion 14a and firmly fixed to the inner wall surface of the cylindrical portion by brazing or sludge of the paste penetrates into the inside of the cylindrical portion 14a and firmly fixed to the inner wall surface during brazing. After inserting the desiccant assembly 19 into the inside of the machine, and then assembling by turning the filter-integrated cap with O-rings by screwing, the refrigerant leaks as the O-ring is damaged by the paste or sludge fixed on the inner wall surface of the cylindrical portion 14a. There was a problem that causes.

In addition, the gas liquid is separated from the refrigerant flowing into the receiver by the specific gravity separation method. That is, as the refrigerant in the second header pipe 2 is introduced into the receiver at a pressure of about 15 to 20 kgf / cm 2, the liquid components are collected downward by the difference in gravity acting on the gas phase component and the liquid component. The liquid component of the is again passed through the outlet (pipe-type hole 14c). Thus, the receiver basically has the gas-liquid separation function of the refrigerant and the storage function and the absorption function of the refrigerant fluctuation caused by the change of the refrigeration cycle operation conditions (load). In this case, since a large amount of gaseous components easily flow out before the gas-liquid components are separated, there is a problem in that sufficient cooling performance is not obtained in the evaporator because it is not sufficiently overcooled in the condenser.

In addition, when the desiccant assembly is placed directly above the filter, there is a problem that the desiccant collides with the refrigerant flowing from the inlet port (pipe-shaped hole 14b) and causes desiccant wear.

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 prevents refrigerant leakage and facilitates gas-liquid separation.

Another object of the present invention is to provide a receiver integrated condenser that reduces desiccant wear.

The receiver integrated condenser according to the present invention for achieving the above object, two header pipes spaced apart from each other, a plurality of tubes installed in parallel between the two header pipes, a plurality of installed between the plurality of tubes A receiver integrated condenser having a heat dissipation fin and a receiver that is integrally coupled to one of the two header pipes, the receiver having an upper conduit hole and a lower conduit hole communicating with the header pipe, The lower body is integrally brazed and the upper body is coupled to the upper portion of the lower body brazing, the upper pipe-type hole is inclined upward toward the receiver from the header pipe side, the lower pipe-type hole Characterized in that the inclined downward toward the receiver from the header pipe side .

The upper conduit-shaped hole is formed in a direction in contact with the inner wall surface of the lower body so that the refrigerant flows inside the lower body.

The inner diameter of the upper pipe-type hole is gradually smaller toward the receiver in the header pipe side.

According to the receiver integrated condenser according to the present invention, the paste or sludge is prevented from sticking to the inner wall of the lower body during brazing to prevent damage to the O-ring to prevent refrigerant leakage, and to change the flow direction of the refrigerant while turning it. Gas-liquid separation is facilitated, and the refrigerant does not directly hit the desiccant assembly, thereby reducing the wear of the desiccant.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Figure 4 is a block diagram showing a receiver integrated condenser to which the present invention is applied. As shown, both ends of the first header pipe 101 and the second header pipe 102 and the slots of the first header pipe 101 and the second header pipe 102 spaced apart from each other in parallel to each other. Is inserted into the plurality of tubes 104 arranged in parallel with each other, the plurality of interposed between the tube 104, the heat dissipation fin 106 and the receiver 108 is integrally coupled to the second header pipe (102) It is provided.

A coolant inlet 110 and a coolant outlet 111 are formed on the upper and lower portions of the first header pipe 101, respectively, and the lower portion of the second header pipe 102 communicates with the receiver 108. Communication holes are formed. These two communication holes are aligned with the pipe-type holes of the receiver, which will be described later, and form an outlet through which the refrigerant flows from the condenser to the receiver and an inlet through which the refrigerant flows into the subcooling region.

Upper and lower ends of the first header pipe 101 and the second header pipe 102 are sealed by a cap member 112, and compartments are formed inside the first and second header pipes 101 and 102. A plurality of baffles 113 forming the plurality of fixed baffles 113 are in communication with each other to form a tube 104 and four refrigerant passages P1, P2, P3, and P4. The P1, P2, and P3 channels form a condensation region, and the P4 channel forms a supercooling region.

The receiver 108 is a lower body 114 integrally brazed to the lower portion of the second header pipe 102, and is fixed to the upper side of the lower body 114 is fixed by brazing while the fixing bracket 116 The upper body 115 is fixed to the upper portion of the second header pipe 102 by.

The lower body 114 is manufactured by extrusion, and the upper body 115 is manufactured by forging. A filter 117 is installed inside the lower body 114, and a cap 118 is screwed to the lower end of the lower body 114. In addition, a desiccant assembly 119 is installed inside the upper body 115. The filter 117 is attached to the upper side of the cap 118 to trap foreign matters, the lower end of the filter 117 is provided with an O-ring to prevent leakage and maintain airtightness.

FIG. 5 is a cross-sectional view showing a lower portion of the receiver of FIG. 4 (with a desiccant, a filter and a cap removed), FIG. 6 is a cross-sectional view taken along the arrow AA line in FIG. 5, and FIG. 7 is a line taken along the arrow BB line in FIG. It is a cross section. As shown, the lower body 114 has an upper conduit type hole 114b communicating with the condensation area of the condenser and a lower conduit type hole 114c communicating with the subcooling area, while the second header pipe is brazed. A flange portion 114d is formed to be in close contact with the outer circumferential surface of the second header pipe 102 to be easily assembled to the 102. The flange portion 114d is integrally formed with the cylindrical portion 114a by the connecting portion 114e. The upper and lower conduit holes 114b and 114c are formed in the connecting portion 114e.

The upper conduit 114b is inclined upward from the second header pipe 102 toward the receiver 108, and the lower conduit 114c is provided at the second header pipe 102 side. It is inclined downward toward the receiver 108.

The upper conduit 114b is formed in a direction in contact with the inner wall surface of the lower body so that the refrigerant flows into the lower body 114, the lower conduit hole 114c is the upper turning direction and It is formed in the direction in contact with the inner wall surface of the lower body so that only the refrigerant of the lower liquid component in the opposite direction.

It is formed in the direction in contact with the inner wall surface of the lower body so as to flow in the opposite direction to the turning direction.

The condenser integrated condenser of the present invention configured as described above is inclined upward or downward while the upper and lower conduit holes 114b and 114c are inclined in the tangential direction to the inner wall surface of the lower body 114. Since it is inclined to the upper side, the paste or sludge is difficult to penetrate the inside of the lower body 114 when brazing the lower body 114 to the second header pipe 102. This prevents refrigerant leakage by reducing damage to the O-ring.

9 and 10, the upper pipe-type hole 114b is inclined upward toward the receiver 108 on the second header pipe 102 side and the inner wall surface of the lower body 114 is shown. Since it is formed in the direction in contact with the, the gas phase refrigerant flowing into the receiver 108 in the second header pipe 102 is gradually liquefied as it goes up along the inner wall toward the upper body 115, the liquid refrigerant is the inner wall surface Down and down. Since the upper pipe-type hole 114b is inclined upward, the lower liquid refrigerant has a lower rotational speed, thereby making it possible to stabilize the flow of the liquid component, thereby smoothly introducing the liquid component into the subcooling region of the condenser.

On the other hand, as another embodiment, as shown in Fig. 8, the inner diameter of the upper conduit type hole 214b may be gradually smaller toward the receiver in the header pipe side. Such a configuration reduces the direct flow of the refrigerant flowing into the receiver into the desiccant assembly and increases the speed of the inflow refrigerant, thereby increasing the efficiency of centrifugal separation of the gas phase liquid and the liquid refrigerant.

In addition, the inclined lower pipe-type hole 114c may flow out only the refrigerant of the liquid component that flows to the bottom by centrifugation even when the gaseous refrigerant flowing into the receiver is increased due to the high heat load of the refrigeration cycle. Therefore, since the supercooled liquid refrigerant of the condenser may be introduced into the expansion valve, it is possible to improve the fuel efficiency of the vehicle by improving the cooling performance under the same conditions.

1 is a block diagram showing a conventional receiver integrated condenser,

2 is a cross-sectional view showing the lower body of FIG.

3 is a plan view of FIG. 2;

Figure 4 is a block diagram showing the applied receiver integrated condenser of the present invention,

5 is a cross-sectional view showing a lower body portion of FIG.

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

7 is a cross-sectional view taken along the line B-B in FIG. 5;

8 is a cross-sectional view showing an upper conduit type hole in another embodiment of the present invention;

9 is a functional state diagram of the present invention (state in which the refrigerant flows obliquely),

Fig. 10 is an operational state diagram (state in which a refrigerant turns) of the present invention.

102: second header pipe 108: receiver

114: lower body 114b, 214b: upper duct hole

114c: lower duct hole 115: upper body

117: filter 118: cap

Claims

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 provided between the plurality of tubes, and the fluid that is integrally coupled to one of the two header pipes In the receiver integrated condenser provided with a machine,

The receiver is divided into a lower body having an upper pipe-type hole and a lower pipe-type hole communicating with the header pipe and integrally brazed to the header pipe, and an upper body coupled to the upper portion of the lower body and brazed.

And the upper conduit is inclined upward from the header pipe side toward the receiver, and the lower conduit is inclined downward from the header pipe toward the receiver.

The method according to claim 1,

The upper conduit condenser is formed in a direction in contact with the inner wall surface of the lower body so that the refrigerant flows into the lower body while flowing inside.

The method according to claim 1 or 2,

An inner diameter of the upper conduit-type hole is gradually smaller toward the receiver in the header pipe side, characterized in that the receiver integrated condenser.

The method according to claim 1,

The lower conduit condenser is formed in a direction in contact with the inner wall surface of the lower body so that only the refrigerant of the lower liquid component in the opposite direction to the upper pivot direction.