JP2002147895A - Condenser equipped with receiver - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a condenser equipped with a receiver, which is capable of connecting easily the receiver to the outlet tank of the same and reduced in the number of parts while facilitated in manufacturing. SOLUTION: A receiver 7 is connected to the outer surface of the outlet tank 6 for the condenser 5 through a connecting member 8. In this case, a receiver communicating passage 9 for communicating the receiver 7 with the outlet tank 6 is provided on the connecting member 8 at a position below the receiver 7. Further, the connecting member 8 is provided with a refrigerant outlet port 10.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a parallel flow type condenser having a receiver arranged in a refrigeration cycle such as a car cooler.

[0002]

2. Description of the Related Art A parallel flow type capacitor having a receiver is formed as shown in FIG. 11 as an example. That is, both ends of a number of refrigerant cooling tubes 1 arranged in the horizontal direction are connected to a pair of tanks (the left side is omitted) in a liquid-tight manner, and the fins 4 are arranged between the tubes 1 to constitute the condenser 5. I do. A receiver 7 is connected to the outer surface of the refrigerant outlet tank 6 of the condenser 5, and the outlet tank 6 and the receiver 7 communicate with each other at a lower portion of the outlet tank 6 by a receiver communication path 9 formed of a small pipe. And
The refrigerant in the receiver 7 flows out to the outside by an outlet pipe 18 inserted in the receiver 7.

[0003] The receiver 7 has two functions,
Is a temporary storage tank for the refrigerant for adjusting the load fluctuation. The size of the receiver 7 needs to have a volume corresponding to the variation in the amount of circulating refrigerant between the maximum load and the no load. As a second role, the receiver 7 performs gas-liquid separation for separating gas and liquid in the refrigerant. This is because refrigerant gas remains in the form of bubbles in the refrigerant liquid condensed by the condenser, and when it is put into the expansion valve as it is, the refrigerant capacity is reduced, so the refrigerant gas and refrigerant liquid are completely separated. Therefore, it is necessary to guide the refrigerant liquid to the expansion valve only.

[0004] The receiver 7 is ideally placed in a well-ventilated place that can always be cooled, such as a condenser outlet tank. In such a relationship between the outlet tank of the condenser and the receiver, in this example, the outer surface of the outlet tank 6 and the outer surface of the receiver 7 are integrally joined by brazing, a through hole is provided at the boundary, and a short pipe is formed there. Through the receiver communication path 9.

[0005]

When the receiver 7 is integrally disposed near the outlet tank 6, the outer surface of the receiver 7 is aligned with the outer surface of the outlet tank 6 over the entire length of the receiver 7, and the space between them is soldered. At the same time, it is necessary to insert the receiver communication passage 9 between them and to braze it at the same time. However, such an integrated structure of the receiver 7 and the outlet tank 6 requires a strict alignment of the joint between them, and has a drawback in that the production thereof requires a lot of man-hours. At the same time, the receiver communication passage 9 and the outlet pipe 18
Had to be installed separately. Therefore, the present invention enables the outlet tank 6 and the receiver 7 to be easily joined together, and the joining connection member itself makes the receiver communication passage 9.
It is another object of the present invention to provide a receiver-equipped capacitor which has a small number of components capable of forming a refrigerant outlet and is easy to manufacture.

[0006]

According to the present invention, a plurality of refrigerant cooling tubes (1) arranged in a horizontal direction and arranged in parallel, and both ends of each of the tubes (1) are provided. Are connected in a liquid-tight manner and are arranged in parallel with each other.
(2) (3) and many fins arranged between each tube
(4) constitutes a condenser (5), and a refrigerant storage receiver connected via a connecting member (8) to an outer surface of an outlet tank (6) at least at an outlet of the condenser (5).
(7) and a receiver communication path (1) provided integrally with the connecting member (8) at a position below the liquid level of the receiver (7) and communicating the receiver (7) and the outlet tank (6). 9) and
A refrigerant outlet (10) that is opened below the liquid level of the receiver (7), is provided integrally with the connecting member (8), and allows the refrigerant to flow out of the receiver (7) to the outside. It is a capacitor.

According to a second aspect of the present invention, in the first aspect, the refrigerant outlet (1) is provided in the middle of the receiver communication path (9).
0) is a condenser with a receiver provided. According to a third aspect of the present invention, in the second aspect, the connecting member (8) is provided at a position above or below the receiver communication passage (9).
A condenser with a receiver provided integrally with a sub communication path (11) for communicating the receiver (7) and the outlet tank (6). According to a fourth aspect of the present invention, in the first aspect, a condenser with a receiver having a refrigerant outlet (10) opened integrally with the coupling member (8) at a position above the receiver communication passage (9). is there.

According to a fifth aspect of the present invention, in any one of the first to fourth aspects, the connecting member (8) comprises an upper connecting member (8a) and a lower connecting member (8
b), which respectively connect and fix the upper part and the lower part between the tank (3) of the condenser (5) and the receiver (7), and the upper connecting member (8a) has a compressor side refrigerant inlet. (16) is provided, which is a condenser with a receiver connected to the inlet tank (12) of the condenser (5). The invention according to claim 6 is the invention according to claim 5, wherein the upper connecting member (8a) is provided.
And a lower connecting member (8b) provided with a bolt hole (13) for supporting a capacitor.

[0009]

Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a schematic longitudinal sectional view showing a first embodiment of a condenser with a receiver according to the present invention. FIG. 2 is an enlarged view of a main part of FIG. 1, and FIG.
2 is a sectional view taken along the line AA of FIG. 3, and FIG. 3B is a schematic sectional view taken along the line BB of FIG. The components having the same functions as those of the conventional components are denoted by the same reference numerals. The capacitor 5 shown in FIG. 1 is of a parallel flow type and a multi-pass type. That is, a large number of tubes 1 are arranged in a horizontal direction, and both ends thereof are liquid-tightly fixed to a pair of tanks 2 and 3 parallel to each other. And tube 1
The fins 4 are fixed by brazing or the like, and one of the tanks 3 is provided with a horizontal partition 15 at an intermediate portion thereof. Is configured. And the inlet tank 12 is the refrigerant inlet 16
The outlet tank 6 is in communication with the refrigerant outlet 10.

A receiver 7 is arranged in parallel adjacent to the tank 3, and the tank 3 and the receiver 7 are integrally connected by an upper connecting member 8a and a lower connecting member 8b composed of a pair of blocks. As shown in FIG. 3A, both sides of the lower connecting member 8b are aligned with the outlet tank 6 and the receiver 7, respectively.
In this example, since the outlet tank 6 and the receiver 7 are each formed in a pipe shape, the receiver communication passage 9 having an end substantially aligned with the outer peripheral surface thereof and aligned with each communication hole is formed in the lower connecting member 8b. And a refrigerant outlet 10 orthogonal to the receiver communication passage 9 communicates with the receiver communication passage 9. Similarly, an upper connecting member 8a connects the upper portions of the tank 3 and the receiver 7, and both sides of the upper connecting member 8a are formed in the same manner as in FIG. The difference between the upper connecting member 8a and the lower connecting member 8b is that only the refrigerant inlet 16 communicates with the tank 3 and the refrigerant inlet 16 does not communicate with the receiver 7.

In this example, both the upper connecting member 8a and the lower connecting member 8b are aligned with the cylindrical tank 3 and the receiver 7 on both sides, however, the tank 3 and the receiver 7 may be formed in an elongated box shape. is there. In that case, the upper connecting member 8a and the lower connecting member 8b are each formed in a block shape having a rectangular cross section. Further, a bolt hole 13 is provided in each of the upper connecting member 8a and the lower connecting member 8b.

[0012]

In the condenser with a receiver constructed as described above, an outlet pipe from a compressor (not shown) is connected to a refrigerant inlet 16, and a high-temperature and high-pressure refrigerant flows into the inlet tank 12 from the refrigerant inlet 16. Then, a large number of tubes 1 existing above the horizontal partition 15 flow from right to left in the drawing, and a U-turn in the tank 2 is performed, and a large number of tubes 1 existing below the horizontal partition 15 pass leftward. And flows into the outlet tank 6 to the right. At this time, the refrigerant flowing in the tube 1 on the lower side of the condenser 5 changes from gas to liquid as it approaches the outlet tank 6, and becomes completely liquid refrigerant in the outlet tank 6, and becomes a receiver communication passage 9. Some of the refrigerant flows into the receiver 7 from the
Is supplied to the evaporator through an expansion valve (not shown).

The liquid refrigerant flowing into the receiver 7 from the outlet tank 6 separates the gaseous refrigerant contained therein from above the liquid level 14. In the refrigeration cycle, the amount of the circulating refrigerant changes due to a change in load. When the load increases and the refrigerant circulation amount increases, the refrigerant in the receiver 7 is supplied to the evaporator via the expansion valve through the refrigerant outlet 10, and when the refrigerant circulation amount decreases, more refrigerant is stored in the receiver 7.

Next, FIGS. 4 to 6 show a second embodiment of the present invention. This embodiment differs from the first embodiment in that:
The sub communication path 11 is provided above the receiver communication path 9 and below the liquid surface 14. The sub communication passage 11 assists the receiver communication passage 9. When the refrigerant communication amount from the outlet tank 6 to the receiver 7 is small with the receiver communication passage 9 alone, the sub communication passage 11 assists the sub communication passage 9. Can be. Next, FIG. 7 shows a third embodiment of the present invention.
This embodiment is different from the second embodiment only in that the sub communication path 11 is located below the receiver communication path 9.

8 to 10 show a fourth embodiment of the present invention. In this embodiment, a refrigerant outlet 10 is provided in a lower connecting member 8b above a receiver communication passage 9, and the refrigerant outlet 10 is provided.
And the receiver 7 communicate with each other. Accordingly, the refrigerant once flows into the receiver 7 from the outlet tank 6, and the liquid refrigerant is supplied from the receiver 7 to the evaporator via the refrigerant outlet 10 through an expansion valve (not shown). Therefore, the refrigerant flowing into the receiver 7 from the receiver communication passage 9 rises in the outlet tank 6 toward the refrigerant outlet 10.
At this time, the ascending flow of the gas component in the refrigerant and the buoyancy of the gas are superimposed, and the gas component is easily separated from the liquid refrigerant and stored above the liquid surface 14.

[0016]

In the condenser with a receiver according to the present invention, the outer surface of the outlet tank 6 of the condenser 5 and the receiver 7 are connected via the connecting member 8, and the connecting member 8 is connected to the receiver communication passage 9 and the refrigerant outlet 10. Is provided, the number of parts is reduced, and a product which is easy to manufacture and has high mass productivity can be provided. Moreover, the receiver communication passage 9 and the refrigerant outlet
Since 10 is disposed below the liquid level 14 of the receiver 7, the refrigerant can smoothly flow between the outlet tank 6 and the receiver 7.

Further, a refrigerant outlet is provided in the middle of the receiver communication passage 9.
In the condenser with the receiver provided with 10, the structure is further simplified, and a robust and highly stable one can be provided. In the case where the sub communication path 11 is provided in the connecting member 8 at a position above or below the receiver communication path 9,
The refrigerant can be moved more smoothly from the outlet tank 6 of the condenser 5 to the receiver 7. In the case where the refrigerant outlet 10 is opened integrally with the connecting member 8 at a position above the receiver communication passage 9, the refrigerant moves from the receiver communication passage 9 to the refrigerant outlet 10 while rising inside the receiver 7. The ascending flow makes it easier to raise the gas component in the refrigerant more smoothly and to separate and discharge it above the liquid level. That is, since the gas refrigerant in the refrigerant flow path is subjected to an upward flow in addition to its buoyancy, it is possible to accelerate the rise of the gas refrigerant and easily separate it from the liquid refrigerant.

Further, the connecting member 8 is composed of an upper connecting member 8a and a lower connecting member 8b, each of which is formed of a block body, and the upper connecting member 8a and the lower connecting member 8b form the tank 3 of the condenser 5 and the receiver 7 respectively. When the upper and lower portions are connected to each other, the receiver 7 can be more stably supported by the tank 3. Since the compressor-side refrigerant inlet 16 is provided in the upper connecting member 8a and is connected to the inlet tank 12 of the condenser 5, a condenser with a receiver that is more compact and has a smaller number of parts can be provided. Further, in the case where the upper connecting member 8a and the lower connecting member 8b are provided with the bolt holes 13 for supporting the capacitor, a special bracket for mounting the capacitor is not required, and the number of parts can be further reduced.

[Brief description of the drawings]

FIG. 1 is an explanatory schematic view of a capacitor with a receiver, showing a first embodiment of the present invention.

FIG. 2 is a longitudinal sectional view of a main part of the capacitor.

FIG. 3 is a schematic view taken along arrows AA and BB in FIG. 2;

FIG. 4 is an explanatory schematic view of a capacitor with a receiver according to a second embodiment of the present invention.

FIG. 5 is a vertical sectional view of a main part of the capacitor.

FIG. 6 is a view taken along the line VI-VI in FIG. 5;

FIG. 7 is a longitudinal sectional view of a main part of a capacitor with a receiver according to a third embodiment of the present invention.

FIG. 8 is an explanatory schematic view of a capacitor with a receiver showing a fourth embodiment of the present invention.

FIG. 9 is a vertical sectional view of a main part of the capacitor.

FIG. 10 is a sectional view taken along the line XX of FIG. 9;

FIG. 11 is an explanatory schematic diagram of a conventional condenser with a receiver.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Tube 2, 3 Tank 4 Fin 5 Condenser 6 Outlet tank 7 Receiver 8 Connecting member 8a Upper connecting member 8b Lower connecting member 9 Receiver communication path 10 Refrigerant outlet 11 Sub communication path 12 Inlet tank 13 Bolt hole 14 Liquid level 15 Horizontal partition 16 Refrigerant inlet 18 outlet pipe

Claims (6)

[Claims] 1. A plurality of refrigerant cooling tubes (1) arranged in a horizontal direction, and a pair of tubes (1) arranged in parallel with each other at both ends of each tube (1) in a liquid-tight manner. A condenser (5) is constituted by the tanks (2) and (3) and a number of fins (4) arranged between the tubes, and an outlet tank at least at an outlet portion of the condenser (5).
A receiver (7) for storing refrigerant connected to the outer surface of (6) via a connecting member (8), and the connecting member at a position below the liquid level of the receiver (7).
(8), a receiver communication path (9) for communicating between the receiver (7) and the outlet tank (6), and an opening below the liquid level of the receiver (7); And a refrigerant outlet (10) provided integrally with the (8) and allowing the refrigerant to flow out of the receiver (7) to the outside. 2. The condenser with a receiver according to claim 1, wherein the refrigerant outlet (10) is provided in the middle of the receiver communication passage (9). 3. The receiver (7) and the outlet tank (6) integrally with the connecting member (8) at a position above or below the receiver communication passage (9). A condenser with a receiver provided with a sub communication path (11). 4. The connecting member according to claim 1, wherein the connecting member is located above the receiver communication passage.
(8) A condenser with a receiver in which a refrigerant outlet (10) is integrally formed. 5. The connecting member (8) according to claim 1, wherein the connecting member (8) has an upper connecting member (8a) and a lower connecting member (8b) each formed of a block body. The upper part and the lower part of the condenser (5) between the tank (3) and the receiver (7) are connected and fixed respectively, and the upper connecting member (8a) is provided with a compressor-side refrigerant inlet (16). A condenser with a receiver connected to the inlet tank (12) of the condenser (5). 6. The capacitor with a receiver according to claim 5, wherein the upper connecting member (8a) and the lower connecting member (8b) are provided with bolt holes (13) for supporting the capacitor, respectively.