JPH05141815A - Oil separator - Google Patents

Abstract

PURPOSE:To narrow an installing space and miniaturize the device per se by a method wherein an interior part of a container is divided into two chambers by a partition plate, one chamber forms a cyclon or an inertia type structure and the other chamber stores a filling layer filter. CONSTITUTION:In an oil separator 8 to be arranged within a discharging system of a compressor, a container 81 is divided two chambers by a partition plate 81, one first chamber 83 forms a cyclone or an inertia type structure and the other second chamber stores a filling layer filter 86. With such an arrangement as above, gas containing oil guided to an oil separator 8 passes 3 through the first chamber 83 forming a cyclone structure and in this case oil mists having a large diameter particle is separated and removed, then when the gas passes through the second chamber 84 storing the filling layer filter 86, oil mist having small diameter particle is separated and removed. Then, since the inner pressure of the first chamber 83 and the inner pressure in the second chamber 84 become substantially equal to each other, the partition plate 82 is made thin and as compared with that of the prior art, one set of the top plate 81.a and the bottom plate 81b of the container 81 and the connector pipes for the first and second oil separators can be obviated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an oil separator arranged in a discharge system of a helium gas compressor of a cryogenic refrigerator.

[0002]

2. Description of the Related Art FIG. 3 is a system diagram of a conventional gas compression unit having an oil separator. The atmospheric pressure gas returned from the customer is drawn into the compressor 1 through the surge bottle 6 and compressed. The compressed gas is discharged containing oil and enters the discharge gas cooler 2 where it is cooled by cooling water and then guided to the first oil separator 3 and the second oil separator 4, where the oil is discharged. Are separated. The gas from which the oil has been separated is supplied to the demand destination through the adsorber 5.

On the other hand, the oil separated by the first and second oil separators 3 and 4 is recovered in the compressor 1 through the oil return pipe 7. The first oil separator 3 is of a cyclone type, baffle type, or the like, which has a structure with low pressure loss and low separation efficiency, and the second oil separator 4 is filled with a separating material made of a fibrous material. A filter with a high separation efficiency is used that accommodates the filter 4a.

[0004]

In the above conventional gas compression unit, the first oil separator 3 having a low separation efficiency and the second oil separator 4 having a high separation efficiency are separately provided and contained in the gas. Since the oil is separated and removed, there is a problem that a large space is required for arranging these oil separators 3 and 4, and the weight is increased due to the necessity of having a sufficient pressure resistant structure. there were.

The present invention is intended to solve the above-mentioned drawbacks of the prior art and to provide a small oil separator which can be installed in a narrow space by integrating two kinds of conventional oil separators.

[0006]

DISCLOSURE OF THE INVENTION The present invention is to solve the above problems, and in an oil separator arranged in the discharge system of a compressor, the inside of the container is divided into two chambers by a partition plate, The present invention relates to an oil separator characterized in that the chamber (1) has a cyclone type or inertia type structure and the other layer contains a packed bed filter.

[0007]

Since the present invention has the above-mentioned structure, the oil mist having a large particle size is separated and removed when the gas containing the oil is guided to the oil separator and passes through one chamber of the cyclone type structure. Then, when passing through the second chamber containing the packed bed filter, the oil mist having a small particle size is separated and removed.

[0008]

1 is a longitudinal sectional view of a first embodiment of the oil separator of the present invention. The inside of the container 81 of the oil separator 8 is divided into two chambers 83 and 84 by a partition plate 82, and the lower first chamber 83 has a hollow cyclone type structure with low separation efficiency. Are introduced along the tangential direction. Upper second chamber 84
A filter 86 having a high separation efficiency, which is formed by filling a separating material 86a such as cotton wool in a cylindrical shape and closing both side surfaces of the separating material 86a with end plates 86b, is housed.

The gas containing oil is the oil separator 8
Of the oil mist having a large particle diameter is introduced into the second chamber 84 after being separated and removed by centrifugal acceleration. Then, the filter 8 in the second chamber 84
When flowing through 6, oil mist with a small particle size is used as the separating material 8.
6a is attached and separated from the gas. The gas separated from the oil is guided to an adsorber (not shown) through the outlet 87. The oil separated and removed in the first chamber 83 and the second chamber 84 is discharged from the oil outlets 88 and 89, respectively, and collected in the compressor 1 (not shown).

As described above, since the oil separator of the present invention is a combination of the conventional cyclone type and filter type oil separators, the internal pressures of the first chamber 83 and the second chamber 84 become substantially equal, so the partition The plate 82 can be made thin, and the top plate 81 of the container 81 is different from the conventional case shown in FIG.
a, one set of the bottom plate 81b can be omitted, and piping for connecting the first oil separator 3 and the second oil separator 4 is unnecessary, and as a result, the installation space of the oil separator 8 is narrowed, and It is made lighter.

FIG. 2 is a vertical sectional view of a second embodiment of the present invention. This example is an example in which a baffle 90 is provided in the first chamber 83 and gas is caused to collide with the oil to separate the oil. In addition, although not shown, an inertial structure having low separation efficiency such as reversing the gas flow to separate oil may be used. In FIG. 2, configurations, operations, and effects other than the above are the same as those in the first embodiment, and corresponding members are designated by the same reference numerals.

[0012]

In the oil separator of the present invention arranged in the discharge system of the compressor, the inside of the container is divided by a partition plate.
It is divided into chambers, and one chamber has a cyclone type or inertial type structure and the other layer contains the packed bed filter, so the space for arranging it can be narrowed and the device itself can be miniaturized be able to.

[Brief description of drawings]

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

FIG. 2 is a vertical sectional view of a second embodiment of the present invention.

FIG. 3 is a system diagram of a conventional gas compression unit.

[Explanation of reference numerals] 1 compressor 8 oil separator 81 container 82 partition plate 83 first chamber 84 second chamber 86 filter

Claims (1)

[Claims] 1. In an oil separator arranged in a discharge system of a compressor, the inside of a container is divided into two chambers by a partition plate, and one chamber has a cyclone type or inertia type structure and the other chamber is An oil separator characterized by containing a packed bed filter.