JPH09273836A - Receiver drier of air conditioning equipment for automobile - Google Patents

Abstract

PROBLEM TO BE SOLVED: To lessen the number of components by simplifying a structure, to reduce the cost of manufacture by improving assembling operability and productivity, to attain also reduction of a diameter and thickness and an excellent handling property and to facilitate installation. SOLUTION: A vessel main body 10 shaped like a cylindrical tube is formed in the shape of a hermetically closed vessel by joining airtightly an upper cover body 20 and a lower cover body 25 to upper and lower opening ends of the vessel main body respectively and an inflow port 22 to be connected by piping to a condenser is opened in the upper cover body 20, while an outflow port 27 to be connected by piping to an expansion valve is opened in the lower cover body 25. Filters 11 for removing impurities in a refrigerant and a desiccant 12 for adsorbing moisture in the refrigerant are held by two upper and lower porous plates 13 between and the filters 11 and the desiccant 12 are held in layers inside the vessel 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 cooling cycle of an automobile air conditioner for controlling the room temperature in a vehicle compartment, which is provided downstream of a condenser for cooling a high-temperature and high-pressure gas refrigerant discharged from a compressor, in an engine room. The present invention relates to a receiver dryer of an automobile air conditioner to be installed.

[0002]

2. Description of the Related Art In the cooling cycle of an automobile air conditioner,
The high-temperature and high-pressure gas refrigerant discharged from the compressor driven by the running engine is cooled by a condenser, and the refrigerant condensed and liquefied is stored, the impurities and water in the refrigerant are removed, and the expansion valve downstream from the expansion valve to the evaporator. A receiver dryer is piped downstream of the condenser for circulation. A conventional receiver dryer is configured, for example, as shown in FIG. Here, the receiver dryer has a cover body (2) which is hermetically joined to the open end of a bottomed cylindrical container body (1) to form a closed container, and a refrigerant inflow hole is formed in the cover body (2). (3) and the outflow hole (4) are provided so as to open on the upper surface. Inflow hole (3) is lid (2)
To communicate with the inside of the container body (1), and the outflow hole (4) communicates with the lead-out hole (5) of the axial center in an L-shape.
A suction pipe (6) housed in the inner shaft is connected to the outlet hole (5), and the suction pipe (6) extends to a position close to the bottom of the container body (1) and has a lower end opened. are doing. Then, the filter (7) and the desiccant (8) are sandwiched between the upper and lower annular perforated plates (9), the inner peripheral end is brought into contact with the suction pipe (6), and the outer peripheral end is held in the container body (1). The porous plate (9) is supported by coming into contact with the inner peripheral surface, and the filter (7) and the desiccant (8) are housed in layers in the container body (1).

The receiver dryer is installed in the engine room by connecting the inlet hole (3) to the outlet side of the condenser arranged in the front position of the engine room and the outlet hole (4) to the inlet side of the expansion valve. . The refrigerant condensed and liquefied by the condenser flows into the container body (1) through the inflow hole (3), passes through each layer of the filter (7) and the desiccant (8), and the impurities are removed by the filter (7). And desiccant (8)
The liquid refrigerant that has absorbed water in the lower chamber is absorbed by the suction pipe (6).
Is sucked up by and is circulated from the outflow hole (4) to the expansion valve.

[0004]

The receiver dryer having such a constitution has a large number of constituent parts, and the suction pipe (6) to be housed in the container body (1), the filter (7) which is annularly assembled to this, and the desiccant. The assembly work of (8) was complicated and the manufacturing cost was high. Further, the receiver dryer requires a predetermined volume, and it is difficult to set the entire width, that is, the outer diameter, to be small. Therefore, a certain storage space is required to install the receiver dryer in the engine room.

An object of the present invention is to provide a receiver dryer for a vehicle air conditioner having a new structure to solve these problems, and to simplify the structure to reduce the number of parts and to improve the assembly workability, An object of the present invention is to provide a receiver dryer for an air conditioning system for an automobile, which improves productivity, reduces manufacturing cost, enables reduction in diameter and thickness, is excellent in handling, and is easy to install. .

[0006]

In order to solve the above problems, the present invention provides a receiver for an air conditioner for an automobile, which is installed in an engine room by piping downstream of a condenser that cools a high-temperature and high-pressure gas refrigerant discharged from a compressor. In the dryer, an upper lid is joined to the upper open end of the cylindrical tubular container body, and a lower lid is airtightly joined to the lower open end to form a closed container.The upper lid has an inlet hole for piping to a condenser and a lower lid. Open the outflow hole that is connected to the expansion valve. Then, a filter for removing impurities in the refrigerant, a desiccant for adsorbing water in the refrigerant is sandwiched between two upper and lower porous plates, and the filter and the desiccant are housed in layers in the container body. . Also, fill a desiccant between the upper and lower two-layer filter,
The filter is circumscribed and provided with a perforated plate. Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[0007]

1 to 3 show a concrete embodiment of a receiver dryer of an automobile air conditioner according to the present invention. Here, the receiver dryer is a container body (10).
Is formed in a cylindrical shape having a predetermined length, and an upper lid (20) is joined to the upper opening end and a lower lid (25) is air-tightly joined to the lower opening end to form a vertically long cylindrical closed container. An inflow hole (22) is axially penetrated into the upper lid body (20) and an outflow hole (27) is similarly bored in the lower lid body (25), which communicate with the inside of the container body (10). ing.

The container body (10) is filled with a desiccant (12) between the upper and lower filters (11), and the filters (11) and the desiccant (12) are stored in layers at a slightly upper position. Has been done. Perforated plate (1
3) is circumscribed, and the filter (11) and the desiccant (12) are sandwiched between the upper and lower porous plates (13), and the porous plate (1)
In 3), the outer peripheral end is in contact with the inner peripheral surface of the container body (10), the bead portion (15) protruding inward is formed on the container body (10), and the perforated plate (13) is placed at a predetermined height position. It is configured to support.

In this receiver dryer, a connecting pipe (35) is provided at the outlet side of the condenser (30) arranged in the front position of the engine room to connect the upper inlet hole (22) to the inlet side of the expansion valve. At 36), the outflow hole (27) on the lower surface is piped and installed in the engine room. The receiver dryer of this example uses a small-diameter tube as the container body (10), extends the entire length and sets the outer diameter D to be extremely small compared to the conventional example, and this is installed at a side position of the condenser (30). Adjacent to each other (see FIG. 3). And the capacitor (3
The refrigerant condensed and liquefied in (0) flows into the container body (10) through the inflow hole (22), passes through each layer of the filter (11) and the desiccant (12), and is filtered by the filter (11) to remove impurities. Moisture is removed by the desiccant (12), and the liquid refrigerant stored in the lower chamber flows from the outflow hole (27) to the expansion valve.

[0010]

The characteristic effects of the present invention are as follows. A receiver dryer for an automobile air conditioner according to the present invention comprises a cylindrical tubular container body (10) in which an upper lid (20) is joined to an upper opening end and a lower lid (25) is joined to a lower opening end in an airtight container shape. And the inlet hole (2
2), the outflow hole (27) is opened in the lower lid (25), and the filter (11) and the desiccant (12) are placed in the container body (10).
It is configured to be housed in layers inside, and the inlet and outlet of the refrigerant are separated to simplify the structure, the number of parts is reduced by eliminating the conventional suction pipe, and the assembly workability is excellent and the manufacturing cost is reduced. Is something that can be done. Then, a desiccant (12) is filled between the upper and lower filters (11), and the porous plate (13) circumscribing the filter (11) is supported at a predetermined height position, and the filter (11) and the desiccant are (12)
Can be easily stored and assembled in the container body (10).

Further, due to the simplification of the structure, the outer diameter D can be set smaller than that of the conventional one, so that it can be manufactured to have an extremely small diameter and a thin shape, and the storage space for installing it in the engine room is also small. It is sufficient and easy to handle. The thin receiver dryer is arranged adjacent to the side position of the condenser (30) to improve the space utility in the engine room.

[Brief description of drawings]

FIG. 1 is a sectional view of a receiver dryer of an automobile air conditioner of the present invention.

FIG. 2 is a plan view of the same.

FIG. 3 is a plan view showing the installation state of the receiver dryer.

FIG. 4 is a conventional sectional view.

[Explanation of symbols]

 10 Container Main Body 11 Filter 12 Drying Agent 13 Perforated Plate 20 Upper Lid 22 Inflow Hole 25 Lower Lid 27 Outflow Hole 30 Condenser

Claims (2)

[Claims] 1. A pipe is provided downstream of a condenser (30) for cooling a high temperature and high pressure gas refrigerant discharged from a compressor,
In a receiver dryer for an automobile air conditioner installed in an engine room, an upper lid (2) is attached to an upper open end of a cylindrical tubular container body (10).
0), the lower lid (25) is airtightly joined to the lower opening end to form a closed container, and the upper lid (20) has the capacitor (3).
0), an inflow hole (22) to be piped, a lower lid (25) to an outflow hole (27) to be piped to an expansion valve, a filter (11) for removing impurities in the refrigerant, and a water content in the refrigerant. The adsorbing desiccant (12) is sandwiched between two upper and lower porous plates (13), and the filter (11) and desiccant (1)
A receiver dryer for an air conditioner for an automobile, which is configured by accommodating 2) in a container body (10) in layers. 2. The automobile air conditioner according to claim 1, wherein a desiccant (12) is filled between the upper and lower two-layer filters (11), and a perforated plate (13) is provided outside the filters (11). Receiver dryer.