JP2000171127A - Receiver drier - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make smaller, simpler, and lighter in weight the construction of a receiver drier which is mounted in a car air-conditioner. SOLUTION: A receiver drier 1 has a cylindrical main body 10 including a bottom having an opening, and a sealing member 40 for sealing the opening of the main body. The main body 10 is formed by cold-forging an aluminum alloy material. The sealing member 40 is also formed by cold-forming an aluminum alloy material, and has a disk-shaped sealing portion 41 to be engaged with the opening of the main body 10 and a fitting portion 42 externally extending from the sealing portion. The fitting portion 42 is provided with an inflow port 44 for refrigerant and an outflow port 46 for the same. The position of a retainer plate 60 for a filter 62 is restricted by a bulged portion 52 of a pipe 50, and the position of a retainer plate 66 is restricted by an internal projection 12 formed in the main body 10.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a receiver dryer for a car air conditioner used for a vehicle cooling system and temporarily storing a liquid-phase refrigerant.

[0002]

2. Description of the Related Art For example, Japanese Patent Laying-Open No. 7-190567 discloses a receiver dryer for a car air conditioner. The receiver dryer disclosed in the above publication has a bottomed cylindrical main body having an open lower part, a drying member provided in the main body, and a head member serving as a sealing member for sealing the opening of the main body. Further, the head member includes an inlet and an outlet for the refrigerant provided in the head member. In such a conventional receiver dryer, the refrigerant flows from the bottom of the tubular receiver dryer and passes through the filter member and the drying member,
The layout of the refrigerant inflow and outflow pipes is simplified because the water and contaminants are removed and are sent out from the bottom outlet.

[0003]

SUMMARY OF THE INVENTION The present invention reduces the diameter of a cylindrical main body, simplifies the mounting structure of a filter member and a drying member, improves the shapes of the inlet and outlet of the refrigerant, and further improves the shape of the refrigerant. An object of the present invention is to provide a receiver dryer having a reduced weight.

[0004]

A receiver dryer according to the present invention comprises, as basic means, a cylindrical main body having an open bottom, and a sealing member for sealing the opening of the main body. And a pipe having one end inserted into the refrigerant inlet of the sealing member, the other end supported by the support member, and opening above the inner surface of the main body. Then, a pressure detecting means such as a pressure switch or a pressure sensor can be provided in a screw hole formed at the top of the main body.

[0005] Further, a drying chamber defined inside the main body includes:
It has a desiccant, filters disposed above and below the desiccant, and a mesh-shaped press plate supporting the filter. The upper press plate is position-regulated by a bulge formed in the pipe, and the lower press plate is The position of the plate is regulated by a protrusion formed by deforming a part of the main body inward, and the pipe support member has a slit communicating the screw hole at the top of the main body with the inside of the main body.

[0006]

FIG. 1 is a cross-sectional view of a receiver dryer according to the present invention, FIG. 2 is a view taken in the direction of arrow A in FIG. 1, and FIG. 3 is a bottom view of FIG. The receiver dryer generally denoted by reference numeral 1 has a bottomed cylindrical main body 10 having one end opened. The main body 10 is formed by, for example, cold forging an aluminum alloy material into an elongated cylindrical shape with a bottom. Since the aluminum alloy has good workability, for example, the boss portion 20 provided to extend outward from the bottom portion can also be formed integrally.

The boss portion 20 is formed with a size smaller than the outer diameter of the main body 10 to save material and reduce weight. The boss portion 20 is provided with a screw hole 30 penetrating in the axial direction of the main body 10. Pressure detecting means 35 such as a pressure switch or a pressure sensor is attached to the screw hole 30, and detects the pressure of the refrigerant in the main body. When the pressure detecting means 35 is not required, the screw hole 30 is sealed with, for example, a plug.

A sealing member 40 made of an aluminum alloy is welded and fixed to the opening of the main body 10 by an arc welding portion AW. The sealing member 40 includes a disc-shaped sealing portion 41 and an integrally formed prismatic mounting portion 42 protruding from the sealing portion 41.
The mounting portion 42 is provided with a refrigerant inlet 44 and a refrigerant outlet 46, and each has a pipe-shaped end 44a, 4a.
6a is formed. A bolt-shaped fuse member 48 is attached to the coolant outlet 46.

Further, the receiver dryer 1 is fixed to another device using a bottomed bolt hole 47 formed in the mounting portion 42. At this time, the pipe-shaped ends 44a, 46a
Can be connected to the partner device by omitting the hose. Coolant inlet 44
One end of the pipe 50 is inserted into the opening of the sealing member 40 communicating with the main body, and the other end of the pipe 50 is in contact with the upper end inside the main body 10 via the pipe support member 80.

Inside the main body 10, a pair of filters 6 is provided.
A drying chamber is defined by 2 and 64, and the drying agent 70 is filled. On the upper surface of the upper filter 62, the first holding plate 6
0 is provided to support the filter 62. This holding plate 6
0 is made of, for example, a mesh-shaped metal plate. First
The holding plate 60 is positioned in the main body 10 by a ring-shaped bulging portion 52 formed in the pipe 50 provided in the main body.

The lower filter 64 includes a second holding plate 66.
Is supported on the lower side. This second holding plate 66 is
It is positioned inside the main body 10 by the protrusions 12 protruding inward. The protrusions 12 are provided at three places on the circumference. Instead of forming this projection by notch processing, a groove that projects inward by rolling processing can also be used.

FIG. 4 is a front view, a top view, and a bottom view showing details of the pipe support member 80. As shown in FIG. Pipe support member 80
Is formed by molding a synthetic resin, for example, and has a pipe mounting portion 84 and a seating portion 82. The pipe mounting portion 84 has a stepped hole 86 for receiving the end of the pipe 50, and the refrigerant flowing from the pipe 50 is injected into the main body 10 through the slit 88.

The pipe support member 80 has a slit 88 formed therein.
Is provided, the refrigerant flowing from the condenser (not shown) constituting the refrigeration cycle through the inflow port 44 and the pipe 50 is injected into the main body 10 through the slit 88, and the refrigerant is directly supplied to the pressure detecting means. Reaches 35,
No collisions. Therefore, it is possible to prevent a malfunction such as a malfunction of the pressure detection unit 35 which may be caused by the refrigerant directly colliding with the pressure detection unit 35.

The seating portion 82 which is continuous with the pipe mounting portion 84
Has a body part having a larger diameter than the pipe mounting part 84 and communicates with the outside through a slit 85. Refrigerant filled in the main body 10 passes through the slits 85 to the bolt holes 3 of the main body 10.
0 to transmit pressure to the pressure sensor 35.

[0015]

As described above, the receiver dryer of the present invention includes a cylindrical main body having an open bottom, and a sealing member for sealing the opening of the main body. By providing an outlet, miniaturization and weight reduction are achieved.

Further, the sealing member for sealing the opening of the main body also has a disk-shaped sealing portion for covering the opening of the main body and a mounting portion projecting from the sealing portion in the axial direction of the main body. Is formed by cold forging to form a material with a minimum processing allowance, thereby improving the material yield and reducing the weight. Also, there is an advantage that the structure for mounting the receiver dryer does not have to protrude outward, and the mounting space for the receiver dryer can be easily secured. Furthermore, the refrigerant does not directly reach the pressure detecting means, and the pressure detecting means can be protected.

[Brief description of the drawings]

FIG. 1 is a sectional view of a receiver dryer of the present invention.

FIG. 2 is a view taken in the direction of arrow A in FIG. 1;

FIG. 3 is a bottom view of FIG. 2;

FIG. 4 is an explanatory view of a pipe support member.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Receiver dryer 10 Main body 12 Notch process part protruded inside 20 Boss part 35 Pressure sensor 40 Sealing member 41 Sealing part 42 Attachment part 44 Refrigerant inflow port 46 Refrigerant outflow port 50 Pipe 60 Upper holding plate 62 Upper filter 64 Lower filter 66 Lower holding plate 80 Pipe support member

Claims (4)

[Claims] 1. A receiver dryer provided in a vehicle cooling system for temporarily storing a liquid-phase refrigerant, comprising: a tubular main body having a bottom opening; and a sealing member for sealing an opening of the main body. One end is inserted into the inlet and outlet of the coolant provided in the sealing member, and one end is inserted into the inlet of the coolant of the sealing member, and the other end is supported by the support member and opens at the upper part of the inner surface of the main body A receiver dryer comprising a pipe. 2. The receiver dryer according to claim 1, wherein a pressure detecting means is provided in a screw hole formed in a top portion of the main body. 3. A drying chamber defined inside the main body includes a desiccant, filters disposed above and below the desiccant, and a mesh-shaped press plate supporting the filter. 2. The receiver dryer according to claim 1, wherein the position is regulated by a bulging portion formed in the pipe, and the position of the lower holding plate is regulated by a projection formed by deforming a part of the main body inward. . 4. The receiver dryer according to claim 1, wherein the pipe support member has a slit communicating the screw hole at the top of the main body with the inside of the main body.