JPH10185367A - Oil separator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate boring work and simplify the manufacturing process of an oil separator by a method wherein a refrigerant inlet pipe is inserted vertically into the side wall of a vessel main body of the oil separator for separating oil in gas phase refrigerant while the opening part of the pipe in the vessel main body is approximated to the side wall and the tip end of the pipe is bent so that the outflow direction of refrigerant becomes the circumferential direction of the side wall. SOLUTION: Gas phase refrigerant, containing oil, is introduced through a refrigerant inlet pipe 6 and generates whirling flow in the main body 5 of the vessel of an oil separator whereby oil in the refrigerant is separated by a centrifugal force. The separated oil drops onto a bottom part of the vessel main body 5 along the side wall of the main body 5 by the gravity thereof and is returned to the suction side of a compressor through an oil discharging pipe 4 while the refrigerant is returned into a cycle through a refrigerant outlet pipe 3. In this case, the refrigerant inlet pipe 6 is inserted vertically into the cylindrical side wall of the vessel main body 5 while the opening part of the same in the vessel main body 5 is bent so as to be approximated to the side wall and so that the outflow direction of the refrigerant coincides with the circumferential direction of the side wall whereby the inserting port of the refrigerant inlet pipe 6 of the vessel main body 5 can be formed of a circular port thereby facilitating the boring work of the port and simplifying the manufacturing process of the oil separator.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an oil separator for separating oil contained in a gas-phase refrigerant discharged from a compressor in a refrigeration cycle.

[0002]

2. Description of the Related Art Conventionally, as this type of oil separator, there is an oil separator as disclosed in Japanese Patent Application Laid-Open No. 58-168864, for example.

Hereinafter, the oil separator described above will be described with reference to FIGS. The solid arrows in the drawing indicate the flow of the refrigerant, and the dotted arrows indicate the flow of the oil.

FIG. 9 is a longitudinal sectional view of a conventional oil separator.
FIG. 10 is a sectional view taken along line AA of FIG.

[0005] In the figure, reference numeral 2 denotes a refrigerant inlet pipe, which extends from the outside of the container body 1 so that the refrigerant flows out of the opening in the container body 1 in the circumferential direction of the cylindrical side wall of the container body 1. It is obliquely inserted into the side wall. Reference numeral 3 denotes a refrigerant outlet pipe, which is inserted from the outside of the container body 1 and
It has an opening at the top inside. Reference numeral 4 denotes an oil discharge pipe which is inserted from the outside of the container body 1 and has an opening near the bottom inside the container body 1.

Next, the behavior of the refrigerant and the oil in the oil separator having the above configuration will be described. First, a gas-phase refrigerant containing oil discharged from a compressor (not shown) is guided from the refrigerant inlet pipe 2 into the container body 1, generates a swirling flow, and the oil is separated by centrifugal force. The separated oil descends along the side wall of the container body 1 due to gravity and falls to the bottom of the container body 1.
Thereafter, the refrigerant is returned to the cycle through the refrigerant outlet pipe 3.
The oil that has fallen to the bottom inside the container body 1
It is returned to the suction side of the compressor.

[0007]

However, in the above-described conventional oil separator, the refrigerant inlet pipe 2 is provided with the refrigerant flowing out of the opening in the container body 1 in the circumferential direction of the cylindrical side wall of the container body 1. The oblique insertion from the outside of the container body 1 to the side wall is performed so that the insertion port of the refrigerant inlet pipe 2 of the container body 1 has an elliptical shape. Therefore, it is difficult to form a hole for inserting the coolant inlet pipe 2 of the container body 1 and the manufacturing process is complicated.

An object of the present invention is to solve the conventional problem and to provide an oil separator capable of simplifying a manufacturing process by facilitating drilling of an insertion port of a refrigerant inlet pipe of a container body. And

[0009]

SUMMARY OF THE INVENTION The present invention is directed to a vertically inserted cylindrical side wall of a container body, wherein an opening in the container body is close to the side wall, and the refrigerant flows out in a circumferential direction of the side wall. A refrigerant inlet pipe bent so as to be provided.

Further, a cylindrical flange for fixing the side wall of the container body and the refrigerant inlet pipe is provided.

Further, a coolant inlet pipe insertion port having an inner flange shape for fixing the coolant inlet pipe is provided on a side wall of the container body.

In each of the above constructions, a separating member is provided on the entire surface inside the container body in a horizontal direction above the opening of the refrigerant inlet pipe and below the opening of the refrigerant outlet pipe. .

According to the present invention, since the insertion port of the refrigerant inlet pipe of the container body has a circular shape, drilling is facilitated and the manufacturing process can be simplified.

[0014]

The invention according to claim 1 of the present invention is vertically inserted into a cylindrical side wall of a container body, an opening in the container body is close to the side wall, and a refrigerant flowing direction. Refrigerant inlet pipe bent so that it is in the circumferential direction of the side wall,
A refrigerant outlet pipe inserted from the outside of the container main body and having an opening at the top inside the container main body, and an oil discharge pipe inserted from the outside of the container main body and having an opening near the bottom inside the container main body are provided. In addition, the insertion port of the refrigerant inlet pipe of the container body has a circular shape. Therefore, drilling is facilitated, and the manufacturing process can be simplified.

According to a second aspect of the present invention, in addition to the configuration of the first aspect, a cylindrical flange for fixing the side wall of the container body and the refrigerant inlet pipe is further provided. And the insertion port of the refrigerant inlet tube of the container body has a circular shape. Therefore, drilling is facilitated, and the manufacturing process can be simplified. Further, the strength of the joint between the container body and the refrigerant inlet pipe is improved by the flange. Therefore, it is possible to prevent the joint portion between the container body and the refrigerant inlet pipe from being damaged due to the pipe vibration caused by the compressor operation.

According to a third aspect of the present invention, in addition to the configuration of the first aspect of the present invention, an inner flange-shaped refrigerant inlet pipe insertion port for fixing a refrigerant inlet pipe to a side wall of the container body. Is provided, and the insertion port of the refrigerant inlet tube of the container body has a circular shape. Therefore, drilling is facilitated, and the manufacturing process can be simplified. Further, the strength of the joint between the container body and the refrigerant inlet pipe can be improved without increasing the number of parts. Therefore, due to the pipe vibration caused by the compressor operation,
Damage to the joint between the container body and the refrigerant inlet tube can be prevented.

According to a fourth aspect of the present invention, in addition to the configuration according to any one of the first to third aspects, further, the opening of the refrigerant outlet pipe above the opening of the refrigerant inlet pipe. A separating material is provided on the entire surface inside the container body in the horizontal direction below the portion, and the insertion port of the refrigerant inlet pipe of the container body has a circular shape. Therefore, drilling is facilitated, and the manufacturing process can be simplified. In addition, oil in the refrigerant that could not be separated by centrifugal separation alone can be separated by a separating material. Therefore, the oil separation ability can be improved.

[0018]

Embodiments of the present invention will be described below with reference to the drawings. The solid arrows in the drawing indicate the flow of the refrigerant, and the dotted arrows indicate the flow of the oil.

(Embodiment 1) Embodiment 1 of the present invention will be described with reference to FIGS.

FIG. 1 is a longitudinal sectional view of an oil separator according to Embodiment 1 of the present invention, and FIG. 2 is a sectional view taken along line BB of FIG.

In the drawing, reference numeral 6 denotes a refrigerant inlet pipe, which is inserted vertically into the cylindrical side wall of the container body 5, the opening in the container body 5 is close to the side wall, and the refrigerant flows out of the side wall. It is bent to be circumferential. Reference numeral 3 denotes a refrigerant outlet pipe, which is inserted from the outside of the container body 5 and has an opening at an upper portion in the container body 5. Reference numeral 4 denotes an oil discharge pipe which is inserted from the outside of the container body 5 and has an opening near the bottom inside the container body 5.

Next, the behavior of the refrigerant and oil in the oil separator having the above configuration will be described. First, a gas-phase refrigerant containing oil discharged from a compressor (not shown) is guided from the refrigerant inlet pipe 6 into the container main body 5, generates a swirling flow, and the oil is separated by centrifugal force. The separated oil travels down the side wall of the container body 5 due to gravity and falls to the bottom of the container body 5. Thereafter, the refrigerant is returned to the cycle through the refrigerant outlet pipe 3. The oil that has fallen to the bottom inside the container body 5 is returned from the oil discharge pipe 4 to the suction side of the compressor.

In this embodiment, the refrigerant inlet pipe 6 is inserted vertically into the cylindrical side wall of the container main body 5, the opening in the container main body 5 is close to the side wall, and the refrigerant flowing direction is the circular shape of the side wall. Since it is bent so as to be in the circumferential direction, the insertion opening of the refrigerant inlet pipe 6 of the container body 5 has a circular shape. Therefore, drilling is facilitated, and the manufacturing process can be simplified.

(Embodiment 2) Embodiment 2 of the present invention will be described with reference to FIGS.

FIG. 3 is a longitudinal sectional view of an oil separator according to a second embodiment of the present invention, and FIG. 4 is a sectional view taken along line CC of FIG.

In the drawing, reference numeral 6 denotes a refrigerant inlet pipe, which is inserted vertically into the cylindrical side wall of the container body 5, the opening in the container body 5 is close to the side wall, and the refrigerant flows out of the side wall. It is bent to be circumferential. Reference numeral 7 denotes a cylindrical flange for fixing the side wall of the container body 5 and the refrigerant inlet pipe 6. Reference numeral 3 denotes a refrigerant outlet pipe, which is inserted from the outside of the container body 5 and has an opening at an upper portion in the container body 5. Reference numeral 4 denotes an oil discharge pipe which is inserted from the outside of the container body 5 and has an opening near the bottom inside the container body 5.

Next, the behavior of the refrigerant and oil in the oil separator having the above configuration will be described. First, a gas-phase refrigerant containing oil discharged from a compressor (not shown) is guided from the refrigerant outlet pipe 6 into the container body 5, generates a swirling flow, and the oil is separated by centrifugal force. The separated oil is separated from the container body 5 by gravity.
Along the side wall of the container body 5 and falls to the bottom of the container body 5. Thereafter, the refrigerant is returned to the cycle through the refrigerant outlet pipe 3. The oil that has fallen to the bottom inside the container body 5 is returned from the oil discharge pipe 4 to the suction side of the compressor.

In this embodiment, the refrigerant inlet pipe 6 is inserted vertically into the cylindrical side wall of the container main body 5, the opening in the container main body 5 is close to the side wall, and the refrigerant flowing direction is the circular shape of the side wall. Since it is bent so as to be in the circumferential direction, the insertion opening of the refrigerant inlet pipe 6 of the container body 5 has a circular shape. Therefore, drilling is facilitated, and the manufacturing process can be simplified. Further, the strength of the joint between the container body 5 and the refrigerant inlet pipe 6 is improved by the flange 7. Therefore, breakage of the joint between the container main body 5 and the refrigerant inlet pipe 6 due to the pipe vibration caused by the compressor operation can be prevented.

Third Embodiment A third embodiment of the present invention will be described with reference to FIGS.

FIG. 5 is a vertical sectional view of an oil separator according to a third embodiment of the present invention, and FIG. 6 is a sectional view taken along line DD of FIG.

In the figure, reference numeral 6 denotes a refrigerant inlet pipe, which is inserted vertically into the cylindrical side wall of the container body 5, the opening in the container body 5 is close to the side wall, and the refrigerant flows out of the side wall. It is bent to be circumferential. Reference numeral 8 denotes an inner flange-shaped coolant inlet pipe insertion port for fixing the coolant inlet pipe 6 provided on the side wall of the container body 5. Reference numeral 3 denotes a refrigerant outlet pipe, which is inserted from the outside of the container body 5 and has an opening at an upper portion in the container body 5. Reference numeral 4 denotes an oil discharge pipe, which is inserted from outside the container body 5 and
It has an opening near the bottom inside.

Next, the behavior of the refrigerant and oil in the oil separator having the above configuration will be described. First, a gas-phase refrigerant containing oil discharged from a compressor (not shown) is guided from the refrigerant inlet pipe 6 into the container main body 5, generates a swirling flow, and the oil is separated by centrifugal force. The separated oil descends along the side wall of the container body 5 due to gravity and falls to the bottom of the container body 5.
Thereafter, the refrigerant is returned to the cycle through the refrigerant outlet pipe 3.
The oil that has fallen to the bottom in the container body 5 is discharged to the oil discharge pipe 4.
It is returned to the suction side of the compressor.

In this embodiment, the refrigerant inlet pipe 6 is inserted vertically into the cylindrical side wall of the container main body 5, the opening in the container main body 5 is close to the side wall, and the refrigerant flowing direction is the circular shape of the side wall. Since it is bent so as to be in the circumferential direction, the insertion opening of the refrigerant inlet pipe 6 of the container body 5 has a circular shape. Therefore, drilling is facilitated, and the manufacturing process can be simplified. Further, the strength of the joint between the container body 5 and the refrigerant inlet pipe 6 can be improved without increasing the number of parts. Therefore, breakage of the joint between the container main body 5 and the refrigerant inlet pipe 6 due to the pipe vibration caused by the compressor operation can be prevented.

Fourth Embodiment A fourth embodiment of the present invention will be described with reference to FIGS.

FIG. 7 is a longitudinal sectional view of an oil separator according to Embodiment 4 of the present invention, and FIG. 8 is a sectional view taken along line EE of FIG.

In the drawing, reference numeral 6 denotes a refrigerant inlet pipe, which is inserted vertically into the cylindrical side wall of the container body 5, the opening in the container body 5 is close to the side wall, and the refrigerant flows out of the side wall. It is bent to be circumferential. Reference numeral 8 denotes an inner flange-shaped coolant inlet pipe insertion port for fixing the coolant inlet pipe 6 provided on the side wall of the container body 5. Reference numeral 3 denotes a refrigerant outlet pipe, which is inserted from the outside of the container body 5 and has an opening at an upper portion in the container body 5. Reference numeral 4 denotes an oil discharge pipe, which is inserted from outside the container body 5 and
It has an opening near the bottom inside. Reference numeral 9 denotes a separating member provided on the entire surface inside the container body 5 in a horizontal direction above the opening of the refrigerant inlet pipe 6 and below the opening of the refrigerant outlet pipe 3.

Next, the behavior of the refrigerant and oil in the oil separator having the above configuration will be described. First, a gas-phase refrigerant containing oil discharged from a compressor (not shown) is guided from the refrigerant inlet pipe 6 into the container main body 5, generates a swirling flow, and the oil is separated by centrifugal force. The separated oil descends along the side wall of the container body 5 due to gravity and falls to the bottom of the container body 5. After that, the refrigerant passes through the separating member 9 and is guided to the upper part in the container body 5. At this time, the separating material 9 collects oil contained in the refrigerant, so that the oil is further separated. The separated oil falls to the bottom of the container body 5 by gravity. Thereafter, the refrigerant is returned to the cycle through the refrigerant outlet pipe 3. Further, it falls to the bottom inside the container body 5. Thereafter, the refrigerant is returned to the cycle through the refrigerant outlet pipe 3. The oil that has fallen to the bottom inside the container body 5 is returned from the oil discharge pipe 4 to the suction side of the compressor.

In this embodiment, the refrigerant inlet pipe 6 is inserted vertically into the cylindrical side wall of the container main body 5, the opening in the container main body 5 is close to the side wall, and the refrigerant flowing direction is the circular shape of the side wall. Since it is bent so as to be in the circumferential direction, the insertion opening of the refrigerant inlet pipe 6 of the container body 5 has a circular shape. Therefore, drilling is facilitated, and the manufacturing process can be simplified. Also, oil in the refrigerant that could not be separated by centrifugation alone is
Can be separated. Therefore, the oil separation ability can be improved.

[0039]

As described above, the invention according to claim 1 is
A refrigerant inlet pipe vertically inserted into the cylindrical side wall of the container main body, the opening in the container main body being close to the side wall, and being bent so that the outflow direction of the refrigerant is in the circumferential direction of the side wall; A refrigerant outlet pipe inserted from outside the main body and having an opening at the top inside the container main body, and an oil discharge pipe inserted from outside the container main body and having an opening near the bottom inside the container main body are provided. . For this reason, the insertion port of the refrigerant inlet pipe of the container body has a circular shape. Therefore, drilling is facilitated, and the manufacturing process can be simplified.

Further, the invention described in claim 2 is the same as that in claim 1
And a cylindrical flange for fixing the side wall of the container body and the refrigerant inlet pipe. For this reason, the insertion port of the refrigerant inlet pipe of the container body has a circular shape. Therefore, drilling is facilitated, and the manufacturing process can be simplified. Further, the strength of the joint between the container body and the refrigerant inlet pipe is improved by the flange. Therefore, it is possible to prevent the joint portion between the container body and the refrigerant inlet pipe from being damaged due to the pipe vibration caused by the compressor operation.

Further, the invention described in claim 3 is the first invention.
In addition to the above-mentioned invention, an inner flange-shaped refrigerant inlet pipe insertion port for fixing the refrigerant inlet pipe is provided on the side wall of the container body. For this reason, the insertion port of the refrigerant inlet pipe of the container body has a circular shape. Therefore, drilling is facilitated, and the manufacturing process can be simplified. Further, the strength of the joint between the container body and the refrigerant inlet pipe can be improved without increasing the number of parts. Therefore, due to the pipe vibration caused by the compressor operation,
Damage to the joint between the container body and the refrigerant inlet tube can be prevented.

The invention described in claim 4 is the first invention.
In addition to the invention described in any one of (a) to (c), a separating material is further provided on the entire surface inside the container body in a horizontal direction above the opening of the refrigerant inlet pipe and below the opening of the refrigerant outlet pipe. is there. For this reason, the insertion port of the refrigerant inlet pipe of the container body has a circular shape. Therefore, drilling is facilitated, and the manufacturing process can be simplified. In addition, oil in the refrigerant that could not be separated by centrifugal separation alone can be separated by a separating material. Therefore, the oil separation ability can be improved.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of an oil separator according to a first embodiment of the present invention.

FIG. 2 is a sectional view taken along line BB of FIG. 1;

FIG. 3 is a longitudinal sectional view of an oil separator according to a second embodiment of the present invention.

FIG. 4 is a sectional view taken along line CC of FIG. 3;

FIG. 5 is a longitudinal sectional view of an oil separator according to a third embodiment of the present invention.

FIG. 6 is a sectional view taken along line DD of FIG. 5;

FIG. 7 is a longitudinal sectional view of an oil separator according to a fourth embodiment of the present invention.

8 is a sectional view taken along line EE of FIG. 7;

FIG. 9 is a longitudinal sectional view of a conventional oil separator.

FIG. 10 is a sectional view taken along line AA of FIG. 9;

[Explanation of symbols]

 3 Refrigerant outlet pipe 4 Oil discharge pipe 5 Container main body 6 Refrigerant inlet pipe 7 Flange 8 Refrigerant inlet pipe insertion port 9 Separation material

Claims (4)

[Claims] 1. A container which is vertically inserted into a cylindrical side wall of a container body, an opening in the container body is close to the side wall, and
A refrigerant inlet pipe bent so that a refrigerant flowing direction is a circumferential direction of the side wall, a refrigerant outlet pipe inserted from the outside of the container body and having an opening at an upper part in the container body,
An oil separator provided with an oil discharge pipe inserted from the outside of the container main body and having an opening near a bottom in the container main body. 2. The oil separator according to claim 1, wherein a cylindrical flange for fixing the side wall of the container body and the refrigerant inlet pipe is provided. 3. The oil separator according to claim 1, wherein an inner flange-shaped refrigerant inlet pipe insertion port for fixing the refrigerant inlet pipe is provided on a side wall of the container body. 4. The oil according to claim 1, wherein a separating material is provided on the entire surface inside the container body in a horizontal direction above the opening of the refrigerant inlet pipe and below the opening of the refrigerant outlet pipe. Separator.