CN211625792U

CN211625792U - Oil separator

Info

Publication number: CN211625792U
Application number: CN202020088613.6U
Authority: CN
Inventors: 沈中将; 李璐峰; 高建廷
Original assignee: Taijia Air Conditioning System Jiangsu Co Ltd
Current assignee: Taijia Air Conditioning System Jiangsu Co Ltd
Priority date: 2020-01-15
Filing date: 2020-01-15
Publication date: 2020-10-02
Anticipated expiration: 2030-01-15

Abstract

The utility model discloses an oil separator, which comprises a cylinder body, an air inlet pipe, an air outlet pipe and an oil outlet pipe, wherein the inside of the cylinder body is sequentially provided with a filter screen, an annular baffle plate and a porous baffle plate from top to bottom; a bent pipe is arranged in the second separation cavity, and the lower end of the bent pipe is communicated with the central hole of the annular baffle; a cylindrical vortex plate is arranged in the first separation cavity, and the upper end of a central channel of the cylindrical vortex plate is communicated with the central hole; the gas inlet end of the gas outlet pipe is communicated with the upper part of the gas cavity; the air outlet end of the air inlet pipe is communicated with the external opening of the cylindrical vortex plate; the oil outlet pipe comprises a first oil outlet pipe with an oil inlet end communicated with the oil collecting cavity and a second oil outlet pipe with an oil inlet end communicated with the second separation cavity. The advantages are that: the separation efficiency is higher and more thorough.

Description

Oil separator

Technical Field

The utility model belongs to the technical field of refrigeration plant accessory technique and specifically relates to an oil separator is related to.

Background

In refrigeration systems, lubricating oil plays a vital role, not only to lubricate and cool the compressor rotor, but also to provide a more effective seal. During system operation, the lubricating oil mixes with the refrigerant gas in the compressor and is carried along with the refrigerant. If a large amount of lubricating oil enters the system, the heat exchange efficiency is reduced, and meanwhile, the compressor also fails due to oil shortage. Therefore, the oil separator is very important in the operation process of the system. Namely, the oil separator separates the lubricating oil in the refrigerant gas and sends the lubricating oil back to the compressor, thereby improving the stability and reliability of the system operation.

At present, centrifugal oil separators and filter oil separators are often used in refrigeration systems. The centrifugal oil separator can separate oil drops with larger diameters, the flow speed of mixed gas is high, and when the system runs at partial load, the separation efficiency of the centrifugal oil separator is greatly reduced; the filtering oil separator has a good separation effect and can separate oil droplets having a small diameter, but the flow velocity of the filtering cross section is required to be low, which increases the volume of the filtering oil separator and increases the cost.

Disclosure of Invention

The utility model aims at providing an oil separator, it has separation efficiency higher, comparatively thorough characteristics.

The utility model adopts the technical proposal that: an oil separator comprises a cylinder body with a vertical axial lead, an upper end plate is arranged at the upper part of the cylinder body, a lower end plate is arranged at the lower part of the cylinder body, an air inlet pipe, an air outlet pipe and an oil outlet pipe are arranged on the cylinder body,

the filter screen, the annular baffle and the porous baffle divide the interior of the cylinder into a gas cavity, a second separation cavity, a first separation cavity and an oil collection cavity from top to bottom;

a bent pipe is arranged in the second separation cavity, the lower end of the bent pipe is communicated with the central hole of the annular baffle, and the downward projection of the upper end of the bent pipe does not coincide with the downward projection of the central hole;

a cylindrical vortex plate is arranged in the first separation cavity, the cylindrical vortex plate is provided with an external opening and a central channel, the upper end and the lower end of the cylindrical vortex plate are respectively and tightly connected with the lower surface of the annular baffle plate and the upper surface of the porous baffle plate, and the upper end of the central channel of the cylindrical vortex plate is communicated with the central channel;

and the number of the first and second groups,

the air inlet end of the air outlet pipe is communicated with the upper part of the air cavity;

the air outlet end of the air inlet pipe is communicated with the external opening of the cylindrical vortex plate;

the oil outlet pipe comprises a first oil outlet pipe with an oil inlet end communicated with the oil collecting cavity and a second oil outlet pipe with an oil inlet end communicated with the second separation cavity.

The distance between the oil inlet end of the first oil outlet pipe and the upper surface of the lower end plate is not more than 5 mm.

And the oil inlet end of the second oil outlet pipe is positioned below the upper end of the bent pipe.

The section of the inner cavity of the cylinder body is circular.

The cross section of the cylindrical vortex plate is an involute.

Compared with the prior art, the utility model the advantage that has is: the separation efficiency is higher and more thorough. The oil separator of the utility model organically combines the traditional centrifugal oil separator and the filtering oil separator. The centrifugal separation device has the advantages that the centrifugal separation effect of multi-pass cyclone centrifugal separation is achieved due to different centrifugal forces provided by the vortex type channel, the airflow direction is changed, the collision mode is adopted for further separation, and finally the separation is carried out again through the filtering mode, so that the separation efficiency is effectively improved. After multi-stage separation is adopted, oil drops with larger diameters and oil drops with smaller diameters are separated, so that the separation is more thorough.

Drawings

The invention will be further described with reference to the following figures and examples:

fig. 1 is a front sectional view of an oil separator according to an embodiment of the present invention;

FIG. 2 is a view taken from A-A of FIG. 1;

FIG. 3 is a top view of the annular baffle of the present invention;

fig. 4 is a perspective view of the cylindrical scroll plate of the present invention.

In the figure:

10. the oil separator comprises a cylinder body, 101, a gas cavity, 102, a second separation cavity, 103, a first separation cavity, 104, an oil collection cavity, 11, an upper end plate, 12, a lower end plate, 13, an air inlet pipe, 14, an air outlet pipe, 151, a first oil outlet pipe, 152 and a second oil outlet pipe;

20. a filter screen;

30. an annular baffle plate 31, a central hole;

40. a porous baffle;

50. bending the pipe;

60. cylindrical scroll plate, 61, outer opening, 62, central channel.

Detailed Description

Examples, see fig. 1-4: the oil separator comprises a cylinder 10 with a vertical axis, wherein the upper part of the cylinder 10 is provided with an upper end plate 11, and the lower part of the cylinder 10 is provided with a lower end plate 12. That is, the upper and lower openings of the cylinder 10 are closed, and the upper end plate 11 and the lower end plate 12 are hermetically fixed to the cylinder 10 by welding. The cylinder 10 is provided with an air inlet pipe 13, an air outlet pipe 14 and an oil outlet pipe. That is, the refrigerant gas mixed with the lubricating oil enters the cylinder 10 through the inlet pipe 13, and after the oil-gas separation, the refrigerant gas is discharged from the outlet pipe 14 and the lubricating oil is discharged from the outlet pipe.

Further speaking:

the inside of the cylinder 10 is provided with a filter screen 20, an annular baffle 30 and a porous baffle 40 in sequence from top to bottom, the middle part of the annular baffle 30 is provided with a central hole 31, and the filter screen 20, the annular baffle 30 and the porous baffle 40 divide the inside of the cylinder 10 into a gas cavity 101, a second separation cavity 102, a first separation cavity 103 and an oil collection cavity 104 from top to bottom.

An elbow 50 is disposed in the second separation chamber 102. Specifically, the lower end of the elbow 50 is connected to the central hole 31 of the ring-shaped baffle 30, and the downward projection of the upper end of the elbow 50 is not overlapped with the downward projection of the central hole 31.

Within the first separation chamber 103 is a cylindrical scroll plate 60, the cylindrical scroll plate 60 having an outer opening 61 and a central passage 62. The upper end and the lower end of the cylindrical scroll plate 60 are closely connected to the lower surface of the ring baffle 30 and the upper surface of the porous baffle 40, respectively, and the upper end of the central passage 62 of the cylindrical scroll plate 60 communicates with the central hole 31. That is, the cylindrical scroll plate 60 has a spiral shape when viewed from the top.

More specifically:

the inlet end of the outlet pipe 14 communicates with the upper portion of the gas chamber 101. Generally, the inlet end of the outlet pipe 14 is connected to a through hole provided in the middle of the upper end plate 11.

The outlet end of the inlet pipe 13 communicates with the outer opening 61 of the cylindrical scroll plate 60. That is, the refrigerant gas mixed with the lubricating oil enters the inside of the cylindrical scroll plate 60 from the outer opening 61.

The oil outlet pipe includes a first oil outlet pipe 151 having an oil inlet end communicating with the oil collection chamber 104 and a second oil outlet pipe 152 having an oil inlet end communicating with the second separation chamber 102.

In a specific operation, after a mixed gas including a lubricant and a refrigerant gas enters the inside of the cylindrical scroll plate 60, multi-pass cyclone centrifugal separation is performed in the scroll passage (i.e., inside the cylindrical scroll plate), and the centrifugal force applied to oil droplets is gradually increased from the outside to the inside, so that oil droplets having a large diameter and a medium and large diameter can be separated. These large and medium diameter oil droplets fall through the perforated baffle 40 into the oil collection chamber 104 and then exit the first oil outlet line 151. Meanwhile, after the mixed gas with oil droplets having a smaller diameter reaches the central channel 62 of the cylindrical scroll plate 60, the mixed gas enters the second separation chamber 102 through the elbow 50, then collides with the side wall of the second separation chamber 102 and is filtered by the filter screen 20, the oil droplets having a smaller diameter fall in the second separation chamber 102 and are discharged through the second oil outlet pipe 152, and the relatively pure refrigerant gas enters the gas chamber 101 and is finally discharged through the gas outlet pipe 14. Therefore, the effects of high separation efficiency and thorough separation are achieved.

Optimizing:

the distance between the oil inlet end of the first oil outlet pipe 151 and the upper surface of the lower end plate 12 is not more than 5 mm. That is, the oil inlet end of the first oil outlet pipe 151 is as close as possible to the upper surface of the lower end plate 12 to facilitate more complete oil drop discharge.

The oil inlet end of the second oil outlet pipe 152 is located below the upper end of the elbow 50. Preferably, the oil inlet end of the second oil outlet pipe 152 is flush with the upper surface of the annular baffle 30 to facilitate more thorough oil droplet discharge and to avoid backflow of oil droplets.

The cross section of the inner cavity of the cylinder 10 is circular. Thus, excessive adhesion of oil droplets is avoided, and the mixed gas has a high flow velocity.

The cylindrical scroll plate 60 preferably has an involute profile.

The above only is the preferred embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structures or equivalent flow changes made by the contents of the specification and the drawings, or directly or indirectly applied to other related technical fields, are included in the same way in the protection scope of the present invention.

Claims

1. Oil separator is cylinder (10) of vertical setting including the axial lead, and the upper portion of this cylinder (10) has upper end plate (11), and the lower part has lower end plate (12), and is equipped with intake pipe (13), outlet duct (14) and play oil pipe, its characterized in that on this cylinder (10):

the filter screen (20), the annular baffle (30) and the porous baffle (40) are sequentially arranged in the cylinder (10) from top to bottom, the central hole (31) is formed in the middle of the annular baffle (30), and the filter screen (20), the annular baffle (30) and the porous baffle (40) divide the interior of the cylinder (10) into a gas cavity (101), a second separation cavity (102), a first separation cavity (103) and an oil collection cavity (104) from top to bottom;

an elbow (50) is arranged in the second separation cavity (102), the lower end of the elbow (50) is communicated with a central hole (31) of the annular baffle (30), and the downward projection of the upper end of the elbow (50) is not superposed with the downward projection of the central hole (31);

a cylindrical vortex plate (60) is arranged in the first separation cavity (103), the cylindrical vortex plate (60) is provided with an external opening (61) and a central passage (62), the upper end and the lower end of the cylindrical vortex plate (60) are respectively and tightly connected with the lower surface of the annular baffle plate (30) and the upper surface of the porous baffle plate (40), and the upper end of the central passage (62) of the cylindrical vortex plate (60) is communicated with the central hole (31);

and the number of the first and second groups,

the air inlet end of the air outlet pipe (14) is communicated with the upper part of the air cavity (101);

the air outlet end of the air inlet pipe (13) is communicated with an external opening (61) of the cylindrical scroll plate (60);

the oil outlet pipe comprises a first oil outlet pipe (151) with an oil inlet end communicated with the oil collecting cavity (104) and a second oil outlet pipe (152) with an oil inlet end communicated with the second separation cavity (102).

2. The oil separator of claim 1, wherein: the distance between the oil inlet end of the first oil outlet pipe (151) and the upper surface of the lower end plate (12) is not more than 5 mm.

3. The oil separator of claim 1, wherein: the oil inlet end of the second oil outlet pipe (152) is positioned below the upper end of the elbow pipe (50).

4. The oil separator of claim 1, wherein: the section of the inner cavity of the cylinder body (10) is circular.

5. The oil separator of claim 1, wherein: the section of the cylindrical vortex plate (60) is an involute.