JPH0752050B2 - Receiver - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid receiver used for a car air conditioner.

2. Description of the Related Art As a liquid receiver of this type, for example, as disclosed in Japanese Utility Model Laid-Open No. 2-120673, a refrigerant suction pipe extending upward in a tank penetrates a container containing a filter and a desiccant. And a tapered taper portion for receiving the container is provided on the tank body wall, and the container is composed of an upper opening container body and a lid fitted in the opening of the container body. It is known that the upper edge of the peripheral wall is provided with an inwardly projecting bent edge so as to press the upper surface of the outer peripheral portion of the lid, and the outer peripheral surface of the peripheral wall of the container body is brought into contact with the inner peripheral surface of the tank body wall. Has been.

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention In the liquid receiver, it is necessary to put the desiccant / filter in the container body, cover the lid with the desiccant / filter, and then form the bent edge of the container body. Therefore, it is not easy to form the bent edge portion, and the container is complicated to manufacture.

Further, dust and the like are mixed in the refrigerant flowing into the refrigerant flowing into the tank. Refrigerant may pass between the outer peripheral surface of the container body and the inner peripheral surface of the tank body wall.If this is done, dust, etc., contained in the refrigerant will not be filtered by the filter inside the container and will remain as is from the tank. It will be leaked.

An object of the present invention is to provide a liquid receiver that solves the above problems.

Means for Solving the Problems In the liquid receiver according to the present invention, a refrigerant suction pipe extending vertically inside the tank is arranged so as to penetrate through the filter / desiccant-containing container, and the tank body wall receives the container. In a liquid receiver provided with a tapered portion, the container is composed of a lower opening container body and a bottom lid fitted in the opening of the container body, and a small diameter portion is provided at the lower end of the peripheral wall of the container body. The bottom lid is provided with a pendant bent edge fitted to the inner surface of the small-diameter portion on the outer circumference of the bottom lid, and the small-diameter portion and the bent edge are provided with a U-shaped seal ring outer peripheral surface in cross section so as to sandwich them. It is characterized in that it is in contact with the inner peripheral surface of the tank body wall.

In the liquid receiver according to the present invention, the container is composed of a lower opening container body and a bottom lid fitted in the opening of the lower opening container body,
A small diameter portion is provided at the lower end of the peripheral wall of the container body, and a drooping bent edge portion fitted to the inner surface of the small diameter portion is provided on the outer circumference of the bottom lid, so that the small diameter portion and the bent edge portion sandwich these. Since the seal ring having the U-shaped cross section is fitted, the bent edge portion of the bottom lid can be molded before the container body is covered with the bottom lid. Therefore, the bent edge portion can be easily molded. .

Further, since the outer peripheral surface of the seal ring is in contact with the inner peripheral surface of the tank body wall, there is no fear that the refrigerant flowing into the tank will pass between the tank body wall and the container body peripheral wall.

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

As shown in FIG. 1 and FIG. 2, the liquid receiver comprises a bottomed cylindrical tank 11 and a closing member 12 provided at the upper end of the tank 11.
And a refrigerant suction pipe 13 extending vertically in the tank 11,
A container 14 having a refrigerant suction pipe 13 vertically extending therethrough is provided.

Tank 11, closing member 12, refrigerant suction pipe 13 and container 14
Are made of aluminum.

The tank 11 is composed of a body wall 21 composed of an upper cylindrical portion 21a and a lower tapered portion 21b, and a flat bottom wall 22 connected to the lower end of the tapered portion 21b, which are integrally formed when the tank 11 is forged. It was done.

The closure member 12 is composed of a top wall 23 and a depending peripheral wall 24.
The lower end of 24 is butt-welded to the upper end of the body portion 21.
The central portion of the top portion 23 is formed with a raised pipe connecting portion 25, which has a horizontally protruding inlet pipe connecting male screw portion 25a and an outlet pipe connecting male screw portion 25b. Then, the closing member 12 has an L end so that one end of each of the inlet pipe connecting male screw portion 25a and the outlet pipe connecting male screw portion 25b is opened.
A letter-shaped inlet passage 26 and outlet passage 27 are formed.
The upper end of the vertical portion of the outlet passage 27 is opened upward, and the opening is closed by a sight glass 28.

At the upper end of the refrigerant suction pipe 13, two flanges 31 are formed adjacent to each other, and the refrigerant suction pipe including these two flanges 31.
The upper end of 13 is pressed into the lower end of the vertical portion of the outlet passage 27. A container engaging collar 32 is formed slightly below the middle of the height of the suction pipe 13.

The container 14 is composed of a lower opening container body 34 and a bottom lid 35 covering the lower end opening thereof.

The container body 34 includes a peripheral wall 36 having an outer surface that matches the inner surface of the cylindrical portion 21a of the body wall 21, and a top wall 37 that is attached to the upper end of the peripheral wall 36. At the lower end of the peripheral wall 36, an inward taper portion 38 and a small diameter portion 39 subsequent to the taper portion 38 are formed. A suction pipe insertion hole 41 is formed at the center of the top wall 37, and a hanging cylindrical flange 42 is formed at the edge thereof. The suction pipe 13 is inserted into the pipe insertion hole 41, and the upper surface of the edge portion of the pipe insertion hole 41 has a brim.
32 is engaged. A large number of refrigerant passage holes 43 are formed around the pipe insertion hole 41.

The bottom lid 35 has a peripheral wall small-diameter portion 39 of the container body 34 at the edge of the bottom wall 44.
A downwardly bent edge 45 having an outer surface conforming to the inner surface is provided. A suction pipe insertion hole in the center of the bottom wall 44
46 is formed, and a hanging cylindrical flange is formed on the edge
47 are formed. The suction pipe 13 is inserted into the pipe insertion hole 46. A large number of refrigerant passages 48 are formed around the insertion hole 46. Then, the peripheral wall small diameter portion 39 of the container body 34 and the bent edge portion 45 of the bottom lid 35 are covered with an elastic material seal ring 51 so as to sandwich them,
The container 14 is received by the upper end of the tapered portion 21b of the tank 11 via the seal ring 51. Inside the container 14, an upper filter 52 is provided so as to cover the lower surface of the container body top wall 37.
44 The lower filters 53 are respectively inserted so as to cover the upper surface, and the desiccant 54 is inserted around the suction pipe 13 between the filters 52, 53.

FIG. 3 shows a modification of the closing member. The closing member 55 according to this modification is formed into a disc shape by an aluminum extruded shape member, and is fitted into the upper end of the body portion 21 of the tank 11. An inlet passage 61 and an outlet passage 62 are both vertically provided in the closing member 55, and pipes (not shown) are connected to the upper end openings of the closing member 55 via connecting members, respectively. On the peripheral surface of the closing member 55, an O-ring groove 63 and an engaging recess 64 are formed below the O-ring groove 63. An O-ring 65 is inserted in the O-ring groove 63, and an inwardly projecting annular engaging convex portion 66 having a C-shaped cross section of the tank 11 is inserted in the engaging concave portion 64. The upper end of the tank 11 including the engaging convex portion 66 is squeezed by the electromagnetic forming process and is caulked to the closing member 55.

In the above-described embodiment, since the tapered portion is provided at the lower portion of the tank, the capacity of the tank is smaller than that of a tank having a straight tank wall. Therefore, the refrigerant usage of the entire refrigeration system can be small.

EFFECTS OF THE INVENTION According to the present invention, since the bent edge portion of the bottom lid can be molded before the container body is covered with the bottom lid, the bent edge portion can be easily molded. It's easy.

Further, since there is no risk that the refrigerant that has flowed into the tank will pass between the tank body wall and the peripheral wall of the container body, dust and the like that is mixed in with the refrigerant that has flowed into the tank can be reliably filtered by the filter.

[Brief description of drawings]

The drawings show an embodiment of the present invention, FIG. 1 is a vertical vertical sectional view, FIG. 2 is a plan view, and FIG. 3 is a vertical vertical sectional view of an essential part showing a modified example of a closing member. 11 …… tank, 13 …… suction pipe, 14 …… container, 21 …… tank body wall, 21b …… taper part, 34 …… container body, 35 ……
Bottom lid, 36 …… Container main body wall, 39 …… Small diameter part, 45 …… Bend edge, 51 …… Seal ring, 52,53 …… Filter, 54…
…desiccant.

Claims (1)

[Claims] 1. A refrigerant suction pipe 13 extending vertically inside a tank 11.
Is arranged so as to penetrate the container 14 containing the filters 52, 53 and the desiccant 54, and the tank body wall 21 is provided with a tapered taper portion 21b for receiving the container 14, Is composed of a lower opening container main body 34 and a bottom lid 35 fitted in the opening, and a small diameter portion 39 is provided at the lower end of the peripheral wall 36 of the container main body 34, and a small diameter portion is provided on the outer periphery of the bottom lid 35. 39
A mating hanging edge portion 45 is provided on the inner surface, and a U-shaped seal ring 51 having a cross section is fitted to the small diameter portion 39 and the bending edge portion 45 so as to sandwich them. The outer peripheral surface is in contact with the inner peripheral surface of the tank body wall 21, wherein the liquid receiver is characterized.