JP2002107010A - Receiver dryer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a receiver dryer having a simple structure and high productivity. SOLUTION: The receiver dryer, of which the whole is shown by a mark 100 has a body 110 made by forging the material of an aluminum alloy in the shape of a bottomed cylinder. The bottom part 120 of the body 110 is provided with a first transit hole 122 and a second passing hole 124 of a refrigerant. One of the two passing holes is an inflow port of the refrigerant and the other an outflow port thereof. Pipes 140 and 142 made of a copper alloy are inserted into the two holes 122 and 124 respectively and joined thereto by in-furnace brazing. A cover member 150 made of the aluminum alloy is fitted in the opening on the opposite side to the bottom part 120 of the body 110 and fixed thereto by TIG welding W1. A pipe member 130 provided in the central part of the body 110 is formed integrally with the main body 110 in forging of the body. A pair of holding members 160 and 170, each having a structure pierced by the pipe member 130, are counterposed. Inside the holding members 160 and 170, mesh members 162 and 172 each of made a metal are disposed and a desiccant 180 is filled in the space inside these members.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a receiver dryer for storing a refrigerant used in an air conditioner such as a car air conditioner.

[0002]

2. Description of the Related Art In an air conditioner such as a car air conditioner,
A receiver dryer for storing the refrigerant compressed by the compressor and liquefied by the condenser and removing moisture in the refrigerant is provided. The receiver dryer is provided with a cylindrical main body, a refrigerant inlet to the main body, and a refrigerant outlet. The inlet and outlet of the refrigerant are provided on opposite sides in the axial direction of the main body, and a drying chamber filled with a desiccant is provided between them.

[0003] The receiver dryer body has a cylindrical shape with one end opened, and is made of an aluminum alloy for weight reduction. Since the aluminum alloy is rich in plastic fluidity, a cylindrical main body and a pipe penetrating the center of the main body can be integrally formed by forging. For example, JP-A-5-30
Japanese Patent No. 5381 discloses a method of manufacturing a double-ended cylinder having a closed one end by forging an aluminum alloy material.

[0004]

In order to construct a receiver dryer using a double cylinder made by the above-described manufacturing method as a main body, an opening end is covered with a lid member, and a refrigerant inlet is provided. It is necessary to fix a pipe or the like to the opening communicating with the outlet. The lid member is made of the same aluminum alloy as the main body, and is fixed to the main body by, for example, MIG welding means.

[0005] Since pipes, plugs and the like connected to the main body are made of a copper alloy, for example, mechanical joining means or brazing means is used as the joining means. The present invention provides a receiver dryer in which the joining means of the pipe and the like is improved.

[0006]

A receiver dryer according to the present invention comprises, as basic means, a body having a bottomed double cylindrical structure having a pipe member at a center portion, and a body penetrating through the pipe member within the body. A pair of pressing members, a desiccant filled between the pair of pressing members, and a lid member for closing an opening of the main body. Then, an aluminum alloy body forged integrally with the bottom including a hole communicating with the pipe member, a pipe inserted into the hole at the bottom of the body and joined by furnace brazing, and a lid member And a coil spring disposed between the pressing member.

An aluminum alloy body forged integrally with a bottom including a hole communicating with the pipe member, and a pipe inserted into the first hole at the bottom of the body and joined by furnace brazing. And a second hole provided in the bottom of the main body, or a plug screwed into the second hole provided in the main body, and a coil spring disposed between the lid member and one of the pressing members. You can also.

Further, a main body made of an aluminum alloy forged integrally with a bottom including a hole communicating with the pipe member, a projection inserted into the hole at the bottom of the main body, and a hole into which the projection at the bottom of the main body is inserted. And a bolt for securing the head to the bottom of the body.

The knurling or punching process is carried out from the outside of the main body so as to project into the inside of the main body, and has a recess for positioning the holding member.

[0010]

FIG. 1 is a sectional view showing a first embodiment of the present invention, and FIG. 2 is a plan view. The whole number is 10
The receiver dryer denoted by reference numeral 0 has a main body 110 which is forged from an aluminum alloy material into a bottomed cylindrical shape. A first passage hole 122 and a second passage hole 124 for the refrigerant are provided in the bottom 120 of the main body 110. One of the two passage holes for the coolant serves as a coolant inlet, and the other serves as a coolant outlet. Copper alloy pipes 140 and 142 are inserted into the two holes 122 and 124, respectively, and joined by furnace brazing.

A cover member 150 made of an aluminum alloy is fitted in an opening of the main body 110 on the side opposite to the bottom 120, and the TI
It is secured by the G welding _{W 1.} The pipe member 130 formed at the center of the main body 110 is formed integrally with the main body when the main body 110 is forged. A pair of holding members 160 and 170 having a structure penetrated by the pipe member 130 are disposed to face each other. Metal mesh members 162 and 172 are provided inside the holding members 160 and 170, respectively, and the internal space is filled with a desiccant 180.

An inward recess 112 is formed in the outer periphery of the main body 110 by knurling or punching. The first pressing member 160 disposed at a position distant from the lid member 150 is positioned in the axial direction by the protrusion 112a toward the inside of the main body formed by the recess 112.

A coil spring 155 is inserted between the lid member 150 and the second pressing member 170, and constantly presses the second pressing member 170 toward the first pressing member 160. With this configuration, the density of the desiccant 180 is kept uniform, and moisture in the refrigerant is absorbed and removed.

In a receiver dryer in which the first pipe 140 serves as an inlet for the refrigerant, the refrigerant flowing into the receiver dryer is a pipe member 130 formed integrally with the center of the main body 110.
Is discharged from the opening end 132 into the space between the lid member 150 and the second pressing member 170. The refrigerant passes through the desiccant 180 through the second holding member 170 and the mesh member 172 having a gap, and moisture in the refrigerant is removed.

Thereafter, the refrigerant passes through the mesh member 162 and the first holding member 160 having a gap, and is stored in the space between the first holding member 160 and the bottom 120 of the main body 110. It is sent out to other members of the air conditioner.

When manufacturing this receiver dryer,
The bottom portion 120 has two holes 122 and 124, and a pipe portion.
Forging the main body 110 having the material 130 integrally,
Assembling members 160, 170 and mesh members 162, 172
Then, the desiccant 180 is filled, and the coil spring 155 is
The lid member 150 is fitted in the inserted state, and the TIG welding W ₁
To stick.

Next, pipes 140 and 142 are added to this assembly.
And brazing in the furnace, and pipes 140, 1
42 is fixed to the holes 122 and 124 in the bottom 120 of the main body 110. By the above means, the receiver dryer can be manufactured in a small number of steps. During brazing in the furnace, the whole is heated to about 600 ° C. in the furnace.
Heat resistance can be ensured by using metal for the holding member and the mesh member.

FIG. 3 is a sectional view showing a second embodiment of the present invention, and FIG. 4 is a plan view. The receiver dryer generally denoted by reference numeral 200 has a main body 210 which is forged from a material of an aluminum alloy into a bottomed cylindrical shape. A first passage hole 222 and a second passage hole 224 for the coolant are provided in the bottom 220 of the main body 210. One of the two passage holes for the coolant serves as a coolant inlet, and the other serves as a coolant outlet. The two holes 222 and 224 are respectively provided with pipes 2 made of copper alloy.
40 and plug 242 are inserted, and pipe 240 and plug 242 are joined by furnace brazing.

A cover member 250 made of an aluminum alloy is fitted into an opening of the main body 210 opposite to the bottom 220, and
It is secured by the G welding _{W 1.} The pipe member 230 formed at the center of the main body 210 is formed integrally with the main body when the main body 210 is forged. A pair of pressing members 260 and 270 having a structure penetrated by the pipe member 230 are disposed to face each other. Metal mesh members 262 and 272 are disposed inside the holding members 260 and 270, respectively, and the internal space is filled with a desiccant 280.

An inward recess 212 is formed in the outer peripheral portion of the main body 210 by knurling or punching. The first pressing member 260 disposed at a position away from the lid member 250 is positioned in the axial direction by the protrusion 212a formed by the recess 212 toward the inside of the main body.

A coil spring 255 is inserted between the lid member 250 and the second pressing member 270, and constantly presses the second pressing member 270 toward the first pressing member 260. With this configuration, the density of the desiccant 280 is kept uniform, and moisture in the refrigerant is absorbed and removed.

The refrigerant flowing from the pipe 240 passes through a pipe member 230 integrally formed at the center of the main body 210, and is discharged from the open end 232 into a space between the lid member 250 and the second pressing member 270. Is done. The refrigerant passes through the desiccant 280 through the second holding member 270 and the mesh member 272 having a gap, and moisture in the refrigerant is removed.

Thereafter, the refrigerant passes through the mesh member 262 and the first holding member 260 having a gap, and is stored in the space between the first holding member 260 and the bottom 220 of the main body 210. Hole 244 of plug 242
To the other members of the air conditioner.

When manufacturing this receiver dryer,
A hole 222 serving as a first passage hole for the refrigerant is
The main body 210 integrally having the pipe member 230 is forged, and the horizontal hole 2 serving as the second passage hole for the refrigerant is provided.
24 is post-processed as a second hole. Then, presser member 2
60,270, assembled mesh member 262, 272, filled with a desiccant 280, fitted with a lid member 250 in a state of inserting the coil spring 255 is fixed by TIG welding _{W 1.}

Next, a pipe 240 and a plug 242 are inserted into the holes 222 and 224 of the bottom 220 of the assembly, and brazing is performed in a furnace, so that the pipe 240 and the plug 242 are respectively connected to the bottom 220 of the main body 210. It is fixed to the holes 222 and 224. By the above means, the receiver dryer can be manufactured in a small number of steps. During the brazing in the furnace, the whole is heated to about 600 ° C. in the furnace, but heat resistance can be secured by using metal for the pressing member and the mesh member.

Further, the present invention is not limited to the case where the horizontal hole 224 as the second hole is provided in the bottom portion 220 as shown in the embodiment of FIG. 3, but the bottom portion 220 as shown in the third embodiment of FIG. Of course, the main body 210 in the vicinity of can be provided with a horizontal hole 224 as a second hole by post-processing. Also in this case, the plug 242 is
And fixed by brazing in a furnace.

FIG. 6 is a sectional view showing a fourth embodiment of the present invention, and FIG. 7 is a plan view. The receiver dryer generally designated by reference numeral 300 has a main body 310 which is forged from a material of an aluminum alloy into a bottomed cylindrical shape. The bottom 320 of the main body 310 has a first passage hole 322 for refrigerant formed substantially at the center of the bottom 320 and a projection 32 provided on the bottom 320.
6 is provided with a second passage hole 324 formed therein. One of the two passage holes for the coolant serves as a coolant inlet, and the other serves as a coolant outlet. The corresponding members of the head 340 are inserted into and joined to the two holes 322 and 324.

A cover member 350 made of an aluminum alloy is fitted into an opening of the main body 310 on the side opposite to the bottom 320, and the TI
It is secured by the G welding _{W 1.} The pipe member 330 formed at the center of the main body 310 is formed integrally with the main body when the main body 310 is forged. A pair of pressing members 360 and 370 having a structure penetrated by the pipe member 330 are disposed to face each other. Sponge-shaped filter members 362 and 372 are provided inside the holding members 360 and 370, respectively.
Is disposed, and the internal space is filled with the desiccant 380.

A concave portion 312 is formed on the outer periphery of the main body 310 by knurling or punching. The first pressing member 360 disposed at a position away from the lid member 350 is positioned in the axial direction by the protrusion 312a formed inside the main body by the recess 312.

The second pressing member 370 is similarly positioned by the recess 314 formed by knurling or punching. The density of the desiccant 380 is kept uniform by the elasticity of the sponge-like filter members 362 and 372, and the moisture in the refrigerant is absorbed and removed.

The head 340 has a protrusion 342 that engages with the first hole 322. Similarly, the bottom 32 of the body 310
0 also has a protrusion 326 integrally formed with the body 310 that engages the hole 344 of the head 340.

The seal members 343 and 327 are fitted into the respective projections 342 and 326, and the projections are inserted into the corresponding holes 322 and 344, respectively, and engaged. The head 340 is connected to the main body 310 using the bolt 345.

The refrigerant flowing from the first hole 322 flows through a pipe member 330 integrally formed at the center of the main body 310.
Is discharged from the opening end 332 into the space between the lid member 350 and the second pressing member 370. The refrigerant passes through the desiccant 380 through the second pressing member 370 having a gap and the mesh member 372, and moisture in the refrigerant is removed.

Thereafter, the refrigerant passes through the filter member 362 and the first holding member 360 having a gap, and is stored in the space between the first holding member 360 and the bottom 320 of the main body 310. It is sent out to other members of the air conditioner.

When manufacturing this receiver dryer,
A protrusion 326 having a hole 322 and a hole 324 in the bottom 320;
The main body 310 integrally having the pipe member 330 is forged, and the holding members 360 and 370 and the filter members 362 and 3 are formed.
72, filled with a desiccant 380, and
It fitted 0, fixed by TIG welding _{W 1.}

Next, the head 340 is engaged with this assembly, and is connected with the bolt 345. By the above means, the receiver dryer can be manufactured in a small number of steps.

In the embodiment shown in FIG. 6, the first passage hole 322 is formed substantially at the center of the bottom 320 of the main body.
Although the case where the second passage hole 324 is formed in the protrusion 326 provided on the bottom 320 of the main body has been described, the present invention can be applied to a case where the position where the protrusion 326 is provided is changed in addition to the embodiment shown in FIG. Of course it is good. That is, as in the fifth embodiment shown in FIG. 8, a projection 326 that engages with the hole 344 of the plug 340 is integrally provided substantially at the center of the bottom 320 of the main body 310, and the first passage hole is formed in the projection 326. 322 is formed, and a second passage hole 324 is formed in the main body bottom portion 320 to be engaged with the projection 342 provided on the plug 340.

[0038]

As described above, the receiver dryer of the present invention has a structure in which a double cylindrical main body is integrally formed by forging an aluminum alloy material and incorporating necessary members.
It can be produced with less processing and assembly man-hours. Also,
Since the copper alloy pipes and plugs connected to the main body are joined by brazing in a furnace, the required strength can be ensured with a simple structure.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a first embodiment of the present invention.

FIG. 2 is a plan view of FIG. 1;

FIG. 3 is a sectional view showing a second embodiment of the present invention.

FIG. 4 is a plan view of FIG. 3;

FIG. 5 is a sectional view showing a third embodiment of the present invention.

FIG. 6 is a sectional view showing a fourth embodiment of the present invention.

FIG. 7 is a plan view of FIG. 6;

FIG. 8 is a sectional view showing a fifth embodiment of the present invention.

[Explanation of symbols]

 REFERENCE SIGNS LIST 100 receiver dryer 110 main body 112 recess 120 bottom 122, 124 hole 130 pipe member 140, 142 pipe 150 cover member 155 coil spring 160 first pressing member 170 second pressing member 180 desiccant

Claims (5)

[Claims] 1. A main body having a bottomed double cylindrical structure having a pipe member at a center portion, a pair of pressing members provided through the pipe member in the main body, and a pair of pressing members. A desiccant to be filled into the receiver dryer having a lid member for closing an opening of the main body, wherein the main body is made of an aluminum alloy forged integrally with a bottom including a hole communicating with a pipe member; and A receiver dryer comprising: a pipe inserted into a bottom hole and joined by brazing in a furnace; and a coil spring disposed between the lid member and one of the pressing members. 2. A body having a bottomed double cylindrical structure having a pipe member at a central portion, a pair of pressing members provided through the pipe member in the main body, and a pair of pressing members. A desiccant to be filled into the receiver dryer having a lid member for closing an opening of the main body, wherein the main body is made of an aluminum alloy forged integrally with a bottom including a hole communicating with a pipe member; and A pipe inserted into the first hole at the bottom and joined by brazing in the furnace, a plug screwed into the second hole at the bottom of the main body, and a lid member and one of the pressing members are arranged. A receiver dryer comprising a coil spring provided. 3. A main body having a bottomed double cylindrical structure having a pipe member at a central portion, a pair of pressing members provided through the pipe member in the main body, and a pair of pressing members. A desiccant to be filled into the receiver dryer having a lid member for closing an opening of the main body, wherein the main body is made of an aluminum alloy forged integrally with a bottom including a hole communicating with a pipe member; and A pipe inserted into the bottom hole and joined by brazing in a furnace, a plug screwed into the hole of the main body, and a coil spring disposed between the lid member and one of the pressing members. Features receiver dryer. 4. A main body having a bottomed double cylindrical structure having a pipe member at a central portion, a pair of pressing members provided through the pipe member in the main body, and a pair of pressing members. A desiccant to be filled into the receiver dryer having a lid member for closing an opening of the main body, wherein the main body is made of an aluminum alloy forged integrally with a bottom including a hole communicating with a pipe member; and A receiver dryer comprising: a head having a projection inserted into a bottom hole and a hole into which a projection at the bottom of a main body is inserted; and a bolt for fixing the head to the bottom of the main body. 5. A knurling process or a punching process is performed to project from the outside of the main body to the inside of the main body,
5. The receiver dryer according to claim 1, further comprising a recess for positioning the holding member.