JPH115435A - Condenser of air conditioner for automobile - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the exchangeability of liquid tank, and to enable an increase in longitudinal dimension by providing a connector in a head tank of a super-cooling condenser side, and fitting a liquid tank to the connector freely to be removed. SOLUTION: A condenser is formed of a main body condenser and a super- cooling capacitor. In this super-cooling, a connector 15 is fitted to a super- cooling part 5a of a head tank. One projection 16 of the connector 15 is formed with a coolant passage 19 so as to be communicated with inside of the head tank 5a. The other projection 17 is formed with a coolant passage 20 so as to be communicated with a head tank of the main body condenser through a pipe 21. A liquid tank 23 is fitted to the connector 15 by a fixing bolt 33. When malfunction is generated in this liquid tank 23, the liquid tank 23 is easily removed from the condenser by removing the bolt 33. Longitudinal dimension of the liquid tank 23 is formed relatively long so as to obtain a necessary capacity.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a condenser having a supercooling condenser used for an air conditioner for a vehicle.

[0002]

2. Description of the Related Art In an air conditioner of an automobile, if the liquid refrigerant on the inlet side of an expansion valve is moderately supercooled, the coefficient of performance of a refrigeration cycle is improved, so that it can be used not only for large vehicles but also for passenger vehicles. It is becoming. For example, as shown in Japanese Utility Model Application Laid-Open No. 6-36912, the core portion 14 is provided by providing header pipes 11 and 12 at both ends of a large number of flat tubes 13 arranged with heat transfer fins 5 interposed therebetween. By forming a partition plate 18 in each of the header portions 11 and 12, the heat exchange fluid flowing in from the inlet pipe 16 reaches the outlet pipe 17 until the core portion 14
It has a multi-pass type multi-flow type main body capacitor 31 which flows down while meandering inside.

[0003] The header pipe 1 of the body capacitor 31
By providing a plurality of flat tubes 13 between the extension header pipes 11a and 12a formed by extending the first and second supercooled condensers 32 and the main condenser 31 and
And an end of a conduit 17 provided so as to communicate with the outlet header pipe 11 or 12 of the main body condenser 31 at the inlet of the liquid tank 20 and one header pipe of the subcooling condenser 32. 11a or 12
It is shown that the ends of the conduits 23 provided so as to communicate with a are attached to the outlets of the liquid tank 20, respectively.

Further, as disclosed in Japanese Patent Application Laid-Open No. 8-110125, there is disclosed a liquid receiver-integrated refrigerant condenser in which a condenser for liquefying and condensing refrigerant and a liquid receiver for storing liquefied refrigerant are integrally provided. ing.

[0005]

Problems to be Solved by the Invention
In the case of No. 912, the step of connecting the two inlet pipes 16 and the outlet pipe 17 to the header pipe 1 and the step of connecting to the liquid tank 20 must be torch brazed. I was Further, by providing the partition plate 18 that divides the main body condenser 31 and the supercooled condenser 32 across the length, the length in the longitudinal direction of the liquid tank is naturally restricted by the length of the header pipe 11, and the capacity is limited. Was.

In Japanese Patent Application Laid-Open No. HEI 8-110125, since the condenser is integrated with the receiver, even if either part fails, the whole must be replaced at the same time, and the cost is reduced. In addition, it has the disadvantage that it is expensive and the man-hour for removing the condenser is required. Also, similar to the former disadvantage,
Since the receiver is provided integrally with the header pipe 21 of the condenser and straddling the separator 24, there is a disadvantage that the length of the header pipe 21 is restricted. Has to be increased, which has the disadvantage of increasing the overall size of the condenser.

Therefore, in order to solve the above-mentioned drawbacks, the present invention has an integrated type in which a liquid tank can be detachably attached to a capacitor to improve exchangeability and increase the length of the liquid tank. Is provided.

[0008]

According to the present invention, there is provided a condenser for an air conditioner for a vehicle according to the present invention, comprising a multi-flow type main condenser in which a plurality of refrigerant tubes are arranged between two header tanks, and supercooling integrally with the main condenser. In a condenser of an automotive air conditioner provided with a condenser, a connector is provided in a header tank on a side of a supercooling condenser, and a liquid tank is detachably attached to the connector.

For this reason, the liquid tank can be freely attached to and detached from the connector provided in the header tank on the side of the supercooling condenser, and even if a trouble occurs in this liquid tank,
What is necessary is just to remove and replace the liquid tank, and it is released from all the replacement work of the condenser.

In the connector for a condenser of an air conditioner for an automobile according to the present invention, two refrigerant passages are formed therein, and one of the refrigerant passages passes through the inside of the connector and is connected to a subcooling condenser. And the other refrigerant passage is connected to the header tank on the main condenser side via a pipe (claim 2).

For this reason, since the connector is provided in the header tank on the side of the supercooling condenser, a liquid tank having a dimension longer than the length of the header tank can be obtained.
This has the advantage of making the diameter relatively short.

Further, the liquid tank according to the first aspect of the present invention is mounted on the connector with bolts integrated with the connector (claim 3), so that the assemblability is improved.

[0013]

Embodiments of the present invention will be described below with reference to the drawings.

In FIGS. 1 and 2, the condenser 1 comprises a main body condenser 2 and a supercooled condenser 3.
The main body condenser 2 is a multi-pass multi-flow type, in which a number of refrigerant tubes 7 are arranged with a predetermined gap between header tanks 4 and 5 arranged side by side, and a corrugated shape is formed between the refrigerant tubes 7. The fin 8 is interposed. The header tank 4 of the main condenser 2 is provided with an inflow port 10a, a partition plate 11 is interposed at an appropriate position in the longitudinal direction, and a partition plate 11 is arranged at an appropriate position in the header tank 5 in the longitudinal direction. A plate 12 is interposed, and the flow of the refrigerant flows between the two partition plates 11 and 12 in a three-pass manner.

The subcooling condenser 3 is provided with partition plates 13 and 14 below the header tanks 4 and 5, and between the refrigerant tubes 7 below the header tubes 4a and 5a. And an intervening fin 8, and an outlet 10a is provided in the header tank 4a.

The supercooled condenser 3 has a connector 15 mounted on the supercooled portion 5a of the header tank 5 by brazing at the same time as the condenser is brazed in the furnace. The connector 15 is provided with two projections 16 and 17 on the upper surface side, and an O-ring 18 is mounted in an annular groove on the outer periphery. A coolant passage 19 is formed in the one protrusion 16 as shown by a dotted line in FIG.
Is connected to the inside of the header tank 5a of the supercooling condenser 3 through the inside of the connector 14. A coolant passage 20 is also formed on the other protrusion 17 as shown by a dotted line in FIG. 2, and also opens through the inside of the connector 14 to the lower surface. A pipe 21 is connected to this opening. Is connected to the header tank 5. In addition, 2
Reference numeral 2 denotes a hole vertically penetrating the connector 15, and a fixing bolt 33 described below is inserted therein.

In the liquid tank 23, a closing member 25 is fitted into an opening of a cylindrical case main body 24 having a closed head, and a chamber 26 is formed therein. The desiccant 28 held by the plates 27, 27 is stored. The closing member 25 of the liquid tank 23
Is formed with a through hole 29 at the center in the axial direction and a through hole 30 juxtaposed therewith. The through hole 29 is provided in the chamber 2
The through hole 30 is communicated from below into the chamber 26 via a pipe 31. In addition, 3
Reference numeral 2 denotes a screw hole into which the fixing bolt 33 is screwed.

In the liquid tank 23 as described above, the fixing bolt 33 is passed through the hole 22 while the projections 16 and 17 of the connector 15 are fitted into the through holes 29 and 30 of the closing member 25. 32 is attached to the connector 15 by screwing. And
If a problem occurs, the liquid tank 23 can be easily removed from the capacitor 1 by removing the bolt 33.

The longitudinal dimension of the liquid tank 23 is
The connector 15 is the header tank 5a of the supercooled condenser 3
Therefore, it is located at the lower end of the header tank 5, and a dimension obtained by subtracting the thickness of the connector from the entire length of the header tank 5 is obtained, which is a relatively long configuration. For this reason, the required capacity is obtained, and the radial dimension can be made relatively thin.

FIG. 3 shows a second embodiment of the present invention. In this example, an example is shown in which the subcooling condenser 3 is provided integrally above the main condenser 4. In this example, the connector 15 is provided above the header tank 5, and the liquid tank 23 is provided so as to be suspended below. Also in this embodiment, the liquid tank 23 can be detached from the connector 15 with the integral bolt 33.
In the other portions, the same portions as those in the above-described embodiment are denoted by the same reference numerals, and description thereof is omitted.

[0021]

As described above, according to the present invention, the liquid tank can be freely attached to and detached from the connector of the header tank on the subcooling condenser side, and the liquid tank can be easily replaced (claim 1). In addition, since the connector is provided on the end side of the header tank, the limitation on the longitudinal dimension of the liquid tank is relaxed, and a long and thin header tank can be provided (claim 2). Furthermore, since the liquid tank can be integrally attached and detached with the bolt, the assembling property is improved (claim 3).

[Brief description of the drawings]

FIG. 1 is a front view showing an embodiment of the present invention.

FIG. 2 is an enlarged sectional view of a main part of the above.

FIG. 3 is a front view showing another embodiment of the above.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Condenser 2 Main body condenser 3 Subcooling condenser 4 Header tank 5 Header tank 7 Refrigerant tube 11, 12, 13, 14 Partition plate 19 Refrigerant passage 20 Refrigerant passage 23 Liquid tank 25 Closure member 29 Through hole 30 Through hole 31 Pipe 33 Fixing bolt

Claims (3)

[Claims] 1. A multi-flow type main body condenser having a plurality of refrigerant tubes disposed between two header tanks,
In a condenser for an automotive air conditioner that has a supercooling condenser integrated with this main condenser, a connector is provided in the header tank on the supercooling condenser side,
A condenser for an automotive air conditioner, wherein a liquid tank is detachably attached to the connector. 2. The connector has two refrigerant passages formed therein, and one of the refrigerant passages communicates with the header tank on the subcooling condenser side through the inside of the connector,
2. The condenser according to claim 1, wherein the other refrigerant passage communicates with the header tank on the condenser side via a pipe. 3. The condenser according to claim 1, wherein the liquid tank is attached to the connector with bolts.