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Porous part for refrigerators, and method of producing the same and refrigerator

Imported: 24 Feb '17 | Published: 06 Jan '04

Shigeharu Taira, Atsushi Endou

USPTO - Utility Patents

Abstract

In this porous part producing method, a head part (

11A,

11B) in the interior of a compressor, which is a sintered part, is subjected at least to vacuum substitution or heat blow cleaning, whereby after oils causing contamination and/sludge, such as rust-preventive oil, in the head part (

11A,

11B) in the interior of the compressor is discharged therefrom, the head part (

11A,

11B) is immersed in alkyl benzene type oil serving as refrigerator oil. Thereby, deterioration-inducing substances in the head part (

11A,

11B) in the interior of the compressor is replaced with the refrigerator oil; thus, it is possible to produce a porous part which will not bring about contamination and/or sludge even if used as a component for refrigerators for a long time.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a refrigerant circuit diagram of an air conditioner as an embodiment of the refrigerator according to this invention;

FIG. 2A is a plan view of a head part to be disposed in the interior of the refrigerator of the embodiment;

FIG. 2B is a side view of the head part;

FIG. 2C is a plan view of a middle plate of the compressor; and

FIG. 2D is a side view of the middle plate.

Claims

1. A porous part for use in refrigerators, wherein the porous part contains a refrigerator oil with which a rust-preventive oil has been replaced.

2. The porous part according to claim 1, wherein the refrigerator oil contained in the porous part is at least one of an alkyl benzene type oil and an ether type oil.

3. A method of producing a porous part for refrigerators, wherein a porous part (

11A,

11B) is placed in a vacuum, and then the porous part (

11A,

11B) is immersed in a refrigerator oil to be impregnated with the refrigerator oil.

4. A refrigerator using a HFC type refrigerant and an ether or ester type refrigerator oil, wherein the refrigerator has a material (

11A,

11B) impregnated with an alkyl benzene type oil.

5. The refrigerator according to claim 4, wherein said HFC type refrigerant used in the refrigerator contains R32 refrigerant at 40 wt % or more.

6. The refrigerator according to claim 4, wherein at least one porous material serves as a material (

11A,

11B) impregnated with the alkyl benzene type oil.