CN216745049U - Oil separator and air conditioning system with same - Google Patents

Abstract

The utility model relates to a refrigeration technology field especially relates to an oil separator and have its air conditioning system. The oil separator comprises a cylinder body and an air inlet connecting pipe, wherein an oil separation cavity is arranged in the cylinder body, the air inlet connecting pipe is connected to the upper end of the cylinder body and communicated with the oil separation cavity, and the axial direction of the air inlet connecting pipe is arranged along the tangential direction of the cylinder body; the oil separator also comprises an exhaust connecting pipe, the exhaust connecting pipe is arranged at the lower end of the cylinder body, and the upper end of the exhaust connecting pipe is arranged in the oil separation cavity. Compared with the prior art, the utility model has the advantages of: the quantity of connecting pipe elbows between the exhaust connecting pipe and the heat exchanger is reduced, the length of the pipe is shortened, the exhaust pressure drop is obviously reduced, and the power consumption of the compressor is reduced.

Description

Oil separator and air conditioning system with same

Technical Field

The utility model relates to a refrigeration technology field especially relates to an oil separator and have its air conditioning system.

Background

In an air conditioning system, a compressor outputs high-pressure refrigerant steam to a heat exchanger and also outputs part of lubricating oil inside the compressor, and if the lubricating oil enters the heat exchanger, the lubricating oil can cause adverse effects on the heat transfer effect of the heat exchanger.

The existing oil separator considers the characteristics of oil-gas separation, a common exhaust pipe is arranged above the oil separator to exhaust gas to enter a heat exchanger, and the oil separator is generally arranged above the heat exchanger, so that an exhaust connecting pipe is connected to one end, far away from the heat exchanger, of the oil separator, the exhaust connecting pipe needs to turn 180 degrees to enter the heat exchanger, the number of connecting pipeline elbows between the heat exchanger and the oil separator is large, the pipeline length is long, the pressure drop is large, and the power consumption of a compressor is increased.

SUMMERY OF THE UTILITY MODEL

In view of this, to the above technical problem, the utility model provides an oil separator.

In order to solve the technical problem, the utility model provides a following technical scheme:

an oil separator comprises a cylinder and an air inlet connecting pipe, wherein an oil separation cavity is formed in the cylinder, the air inlet connecting pipe is connected to the upper end of the cylinder and communicated with the oil separation cavity, and the axial direction of the air inlet connecting pipe is arranged along the tangential direction of the cylinder; the oil separator also comprises an exhaust connecting pipe, the exhaust connecting pipe is arranged at the lower end of the cylinder body, and the upper end of the exhaust connecting pipe is arranged in the oil separation cavity.

It can be understood that this application through will exhaust takeover set up in the barrel lower extreme, not only solved among the current oil separator exhaust takeover and heat exchanger connecting tube's elbow many, length long, the pressure drop is big, increased the consumption scheduling problem of compressor for connecting tube elbow quantity between exhaust takeover and the heat exchanger reduces, pipeline length shortens, the exhaust pressure drop obviously reduces, and reduced the consumption of compressor.

In one embodiment, an oil baffle is arranged in the cylinder body, the oil baffle is connected to the inner wall of the cylinder body, and one end of the exhaust connecting pipe, which is positioned in the oil separation cavity, penetrates through the oil baffle.

In one embodiment, the cylinder body is further provided with a vortex-preventing plate, the vortex-preventing plate is connected to the inner wall of the cylinder body, and one end of the exhaust connecting pipe, which is positioned in the oil separation cavity, penetrates through the vortex-preventing plate.

In one embodiment, an upper end cover and a lower end cover are respectively arranged at two ends of the cylinder body, the oil separation cavity is enclosed among the upper end cover, the cylinder body and the lower end cover, and the oil baffle plate and the vortex-proof plate are sequentially arranged in the oil separation cavity from the upper end cover to the lower end cover.

In one embodiment, a core pipe is connected to one side of the upper end cover located in the oil separation chamber, and refrigerant enters the oil separation chamber from the air inlet connecting pipe and winds around the core pipe.

In one embodiment, the diameter of the vent adapter is greater than the diameter of the core tube.

It will be appreciated that by making the diameter of the exhaust fitting larger than the diameter of the core tube, the pressure drop of the gas flow entering the exhaust fitting is reduced, preventing the gas flow pressure from impacting too much against the wall of the exhaust fitting and damaging the exhaust fitting.

In one embodiment, the core tube and the exhaust adapter are arranged in a constant diameter manner.

In one embodiment, one end of the exhaust adapter close to the upper end cover is connected with one end of the core tube close to the lower end cover, and the exhaust adapter and the core tube are communicated with each other; and a plurality of exhaust holes are formed in the pipe walls of the exhaust connecting pipe and the core pipe, the exhaust holes are positioned between the air inlet connecting pipe and the oil baffle plate, and the exhaust holes are communicated with the oil separation cavity.

It can be understood that, by making the exhaust adapter and the core tube communicate with each other, the number of processing steps is reduced, and the processing is facilitated; the exhaust connecting pipe and the pipe wall of the core pipe are provided with a plurality of exhaust holes, so that refrigerant vapor can be conveniently exhausted through the exhaust holes.

In one embodiment, the lower end cover is provided with an oil return port, and the oil return port is communicated with the oil separation cavity.

The utility model discloses still provide following technical scheme:

an air conditioning system includes a compressor, a heat exchanger, and an oil separator connected between the compressor and the heat exchanger.

Compared with the prior art, this application through inciting somebody to action exhaust take over connect in the barrel is close to heat exchanger one end has solved many, the length of exhaust take over and heat exchanger connecting tube's elbow among the current oil separator, and the pressure drop is big, has increased the consumption scheduling problem of compressor for connecting tube elbow quantity between exhaust take over and the heat exchanger reduces, pipeline length shortens, the exhaust pressure drop obviously reduces, and has reduced the consumption of compressor.

Drawings

Fig. 1 is a schematic structural view of an oil separator according to an embodiment of the present invention;

fig. 2 is a schematic structural view of an oil separator according to another embodiment of the present invention;

fig. 3 is a schematic structural view of an oil separator according to still another embodiment of the present invention.

The symbols in the drawings represent the following meanings:

100. an oil separator; 10. a barrel; 11. an upper end cover; 111. a core tube; 12. a lower end cover; 121. an oil outlet; 13. an oil separation chamber; 20. an oil baffle plate; 21. a first connection hole; 30. a vortex preventing plate; 31. a second connection hole; 40. an air inlet connecting pipe; 50. an exhaust adapter; 51. and (4) exhausting holes.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and the following detailed description. It should be understood that the detailed description and specific examples, while indicating the scope of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.

It will be understood that when an element is referred to as being "mounted on" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. When an element is referred to as being "secured to" another element, it can be directly secured to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "or/and" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 to 3, the present invention provides an oil separator 100, wherein the oil separator 100 is mainly used in an air conditioning system, and is generally installed between a heat exchanger and a compressor. The oil separator 100 plays a crucial role in many air conditioning systems, in which a large amount of lubricant droplets are dissolved in the high-temperature exhaust gas of the compressor, and an oil separator 100 is usually disposed in the air conditioning system to separate the lubricant from the high-temperature exhaust gas and send the separated lubricant back to the compressor for lubrication, so that excessive lubricant is not introduced into the air conditioning system along with the refrigerant, thereby preventing the compressor from oil loss and operation and affecting the compression efficiency. The cyclone oil separator 100 is selected for use in this embodiment.

The existing oil separator considers the characteristics of oil-gas separation, separated gas is arranged at the upper end of an oil separation cavity of the oil separator, lubricating oil is arranged at the lower end of the oil separation cavity, a general exhaust connecting pipe is arranged above the oil separator so that the exhaust gas enters a heat exchanger, and the oil separator is generally arranged above the heat exchanger, so that the exhaust connecting pipe is connected to one end, far away from the heat exchanger, of the oil separator, the exhaust connecting pipe can enter the heat exchanger only after being turned to 180 degrees, the connecting pipeline between the heat exchanger and the oil separator has more elbows, the pipeline length is long, the pressure drop is large, and the power consumption of a compressor is increased.

In order to solve the problems existing in the existing oil separator, the utility model provides an oil separator 100, which comprises a cylinder 10 and an air inlet connecting pipe 40, wherein an oil separation cavity is arranged in the cylinder 10, the air inlet connecting pipe 40 is connected with the upper end of the cylinder 10 and communicated with the oil separation cavity, and the axial direction of the air inlet connecting pipe 40 is arranged along the tangential direction of the cylinder 10; the oil separator further comprises an exhaust connection pipe 50, the exhaust connection pipe 50 is arranged at the lower end of the cylinder 10, and the upper end of the exhaust connection pipe 50 is arranged in the oil separation chamber. The lower end of the exhaust connection pipe 50 is connected to the heat exchanger.

It should be noted that, in the present application, the exhaust connection pipe 50 is disposed at the lower end of the cylinder 10, so that the problems of the existing oil separator 100, such as many elbows, long length, large pressure drop, increased power consumption of the compressor, and the like of the connection pipeline between the exhaust connection pipe 50 and the heat exchanger, are solved, the number of elbows of the connection pipeline between the exhaust connection pipe 50 and the heat exchanger is reduced, the length of the pipeline is shortened, the exhaust pressure drop is significantly reduced, and the power consumption of the compressor is reduced.

The cylindrical body 10 is substantially cylindrical and is installed in a vertical type in an air conditioning system. Of course, in other embodiments, the cylinder 10 may have other shapes such as a square cylinder, and is not limited herein.

Further, an upper end cap 11 and a lower end cap 12 are respectively disposed at both ends of the cylinder 10. An oil separation chamber serving as a centrifugal separation space is enclosed between the upper end cover 11, the cylinder 10 and the lower end cover 12. The term "vertical orientation" of the upper end cap 11 and the lower end cap 12 is based on the actual vertical orientation in which the cylinder 10 is vertically mounted.

Specifically, in order to fit the shape of the cylindrical barrel 10, the upper end cap 11 and the lower end cap 12 are each shaped like a circular disk. And the upper end cover 11 and the lower end cover 12 are hermetically connected with the cylinder 10. Of course, in other embodiments, the upper end cap 11, the cylinder 10 and the lower end cap 12 may be provided as a single body, which is not limited herein.

Further, the oil separator 100 further includes an air inlet connection pipe 40 connected to the drum 10. The air inlet connection pipe 40 is connected to one end of the cylinder 10 close to the upper end cover 11, and the axial direction of the air inlet connection pipe 40 is arranged along the tangential direction of the cylinder 10. That is, the air inlet connection pipe 40 is horizontally disposed, and one side inner wall of the air inlet connection pipe 40 is tangent to the inner wall of the drum 10.

It should be noted that the outlet of the air inlet connection tube 40 is directly connected with the side wall of the cylinder 10, so that when the refrigerant gas enters the oil separation chamber from the air inlet connection tube 40, the refrigerant gas does not directly collide with the inner wall of the cylinder 10, but directly forms a cyclone, and the centrifugal radius is the largest, and the centrifugal separation effect is the best.

Further, a core tube 111 is attached to a side of the upper end cover 11 in the oil separation chamber. One end of the core tube 111 is connected to the upper end cover 11, and the other end extends to the lower end of the air inlet connection tube 40 toward the lower end cover 12.

After the refrigerant enters the oil separation chamber from the air inlet connection pipe 40, the refrigerant is allowed to flow around the core pipe 111 as a flow center, and centrifugal separation is performed.

In order to prevent the cyclone-forming air flow from recoiling the lubricating oil that has been separated, an oil baffle 20 extending in the radial direction of the cylinder 10 is provided in the cylinder 10, and the oil baffle 20 is provided below the core tube 111 for blocking the vortex.

The shape of the oil baffle 20 can be polygonal, in this embodiment, the shape of the oil baffle 20 is hexagonal, and the oil baffle 20 is hexagonal, so that the oil baffle 20 can form a flow channel for lubricating oil to pass through on the basis that the inner wall of the cylinder 10 is connected with the inner wall of the cylinder 10.

In order to further reduce the airflow vortex below the cylinder 10 and prevent the lubricating oil which has dropped on the bottom of the cylinder 10 from forming vortex and affecting the oil return effect, a vortex preventing plate 30 extending along the radial direction of the cylinder 10 is further arranged below the oil baffle plate 20, and the vortex preventing plate 30 is located below the cylinder 10 and close to the lower end cover 12.

In order to discharge the separated lubricating oil out of the oil separator 100, an oil outlet 121 is arranged at the lower end of the cylinder 10, the oil outlet 121 is arranged on the lower end cover 12, and the oil outlet 121 is connected to the compressor through an oil pipe, so that oil return is facilitated.

Preferably, in the present embodiment, the number of the vortex preventing plates 30 is two, and the two vortex preventing plates 30 are at 90 ° to each other and cross each other at the axial center of the cylinder 10.

It should be noted that the conventional oil separator is generally disposed above the heat exchanger, and the exhaust connection pipe 50 is connected to the upper end of the cylinder 10, so that the connection line between the exhaust connection pipe 50 and the heat exchanger is long and curved. In this embodiment, since the exhaust adapter 50 is transferred from the upper end cap 11 connected to the cylinder 10 to the lower end cap 12 of the cylinder 10, the oil baffle 20 and the vortex breaker 30 are both disposed under the cylinder 10. In order to overcome the installation problem of the exhaust adapter 50, the oil baffle plate 20 and the vortex preventing plate 30 are used for limiting the exhaust adapter 50, and the exhaust adapter 50 is prevented from shaking due to the impact of air flow. This application has seted up first connecting hole 21 and second connecting hole 31 respectively in oil baffle 20 and vortex-preventing plate 30 center department, and exhaust takeover 50 wears to establish first connecting hole 21 and second connecting hole 31 respectively and is connected with oil baffle 20 and vortex-preventing plate 30.

As shown in fig. 1, in one embodiment, the exhaust adapter 50 is spaced apart from the end of the upper end cap 11 and the end of the core tube 111 close to the lower end cap 12, and the diameter of the exhaust adapter 50 is larger than the diameter of the core tube 111. The refrigerant generates cyclone in the oil separation chamber to perform centrifugal lubricating oil separation, oil drops are thrown out and drop on the bottom of the cylinder 10, refrigerant vapor enters the exhaust connecting pipe 50, the diameter of the exhaust connecting pipe 50 is properly increased to reduce the pressure drop of the refrigerant vapor, the impact force of the refrigerant vapor is further reduced, and the phenomenon that the exhaust connecting pipe 50 is damaged due to the fact that the air flow pressure is too large to impact the pipe wall of the exhaust connecting pipe 50 is prevented.

In another embodiment, as shown in fig. 2, the exhaust adapter 50 is spaced apart from the end of the upper end cap 11 and the end of the core tube 111 is spaced apart from the end of the lower end cap 12, and the diameter of the exhaust adapter 50 is equal to the diameter of the core tube 111. The diameter of the exhaust adapter 50 needs to be at least equal to the diameter of the core tube 111, and once the diameter of the exhaust adapter 50 is smaller than the diameter of the core tube 111, when the refrigerant generates cyclone in the oil separation chamber to perform centrifugal lubricant oil separation, oil drops are thrown out and drop on the bottom of the cylinder 10, and the impact force of refrigerant vapor entering the exhaust adapter 50 becomes large, so that the airflow pressure impacts the tube wall of the exhaust adapter 50 too much to damage the exhaust adapter 50.

In yet another embodiment, as shown in fig. 3, an end of the exhaust adapter 50 adjacent to the upper end cap 11 and an end of the core tube 111 adjacent to the lower end cap 12 are connected, and the exhaust adapter 50 and the core tube 111 are communicated with each other. The exhaust adapter 50 and the core tube 111 may be integrally formed to reduce the number of processes and facilitate installation and processing. The exhaust adapter 50 and the core tube 111 may be welded or bonded, but not limited thereto.

Furthermore, a plurality of exhaust holes 51 are opened on the pipe walls of the exhaust connecting pipe 50 and the core pipe 111, the exhaust holes 51 are located between the air inlet connecting pipe 40 and the oil baffle plate 20, and the exhaust holes 51 are communicated with the oil separation chamber. The refrigerant generates cyclone in the oil separation chamber to perform centrifugal lubricant oil separation, oil drops are thrown out and drop on the bottom of the cylinder 10, and refrigerant vapor enters the exhaust connecting pipe 50 through the exhaust hole 51.

Alternatively, in the present embodiment, the shape of the exhaust hole 51 is a circle, a square, or a polygon, which is not limited herein.

It should be noted that, since the oil separator 100 is generally vertically installed, the terms of orientation of the upper end, the lower end, and the like as used herein refer to the direction of the upper end and the lower end in the conventional sense expressed with reference to the installation direction of the oil separator 100.

The present invention also provides an air conditioning system (not shown), comprising a compressor, a heat exchanger and an oil separator 100, wherein the oil separator 100 is connected between the compressor and the heat exchanger.

During the operation of the oil separator 100, high-temperature refrigerant gas discharged from the compressor flows into the oil separation chamber through the gas inlet connection pipe 40 along the tangential direction of the inner wall of the cylinder 10, a cyclone is formed around the core pipe 111, under the action of centrifugal force, oil drops of lubricating oil are thrown onto the inner wall surface of the cylinder 10 and separated out, the lubricating oil flows into the bottom of the cylinder 10 through the gap between the oil baffle plate 20 and the inner wall of the cylinder 10 and is collected at the lower end cover 12, and under the action of the vortex-proof plate 30, the separated lubricating oil cannot form a vortex at the bottom of the cylinder 10, so that the stability of oil return is ensured, and the lubricating oil is discharged from the oil outlet 121 arranged at the bottom of the cylinder 10. The refrigerant gas from which the oil droplets are separated is discharged out of the oil separator 100 through the discharge connection pipe 50 under the pushing action of the discharge vortex and the blocking action of the oil baffle 20.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (10)

1. An oil separator comprises a cylinder (10) and an air inlet connecting pipe (40), wherein an oil separation cavity is arranged in the cylinder (10), the air inlet connecting pipe (40) is connected to the upper end of the cylinder (10) and communicated with the oil separation cavity, and the axial direction of the air inlet connecting pipe (40) is arranged along the tangential direction of the cylinder (10);

the oil separator is characterized by further comprising an exhaust connecting pipe (50), wherein the exhaust connecting pipe (50) is arranged at the lower end of the barrel (10), and the upper end of the exhaust connecting pipe (50) is arranged in the oil separation cavity.

2. The oil separator according to claim 1, characterized in that an oil baffle plate (20) is arranged in the cylinder body (10), the oil baffle plate (20) is connected to the inner wall of the cylinder body (10), and one end of the exhaust connecting pipe (50) located in the oil separation cavity penetrates through the oil baffle plate (20).

3. The oil separator according to claim 2, characterized in that a vortex plate (30) is further arranged in the cylinder (10), the vortex plate (30) is connected to the inner wall of the cylinder (10), and one end of the exhaust adapter (50) located in the oil separation cavity penetrates through the vortex plate (30).

4. The oil separator according to claim 3, wherein an upper end cover (11) and a lower end cover (12) are respectively arranged at two ends of the cylinder (10), the oil separation chamber is enclosed among the upper end cover (11), the cylinder (10) and the lower end cover (12), and the oil baffle plate (20) and the vortex plate (30) are sequentially arranged in the oil separation chamber from the upper end cover (11) to the direction of the lower end cover (12).

5. The oil separator according to claim 4, wherein a core tube (111) is connected to a side of the upper end cover (11) located in the oil separation chamber, and the refrigerant enters the oil separation chamber from the air inlet connection tube (40) and is wound around the core tube (111).

6. -oil separator according to claim 5, characterised in that the diameter of the degassing connection (50) is greater than the diameter of the core tube (111).

7. -oil separator according to claim 5, characterised in that the core tube (111) and the degassing connection tube (50) are arranged with equal diameter.

8. The oil separator according to claim 5, wherein one end of the gas discharge nipple (50) close to the upper end cover (11) and one end of the core pipe (111) close to the lower end cover (12) are connected, and the gas discharge nipple (50) and the core pipe (111) are communicated with each other;

the pipe wall of the exhaust connecting pipe (50) and the pipe wall of the core pipe (111) are provided with a plurality of exhaust holes (51), the exhaust holes (51) are positioned between the air inlet connecting pipe (40) and the oil baffle plate (20), and the exhaust holes (51) are communicated with the oil separation cavity.

9. The oil separator according to claim 4, wherein an oil return opening (121) is formed in the lower end cover (12), and the oil return opening (121) is communicated with the oil separation chamber.

10. An air conditioning system comprising a compressor, a heat exchanger and an oil separator according to claims 1-9 connected between the compressor and the heat exchanger.

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