CN113739459A - Vertical oil separator and refrigerating system - Google Patents

Abstract

The invention relates to the technical field of refrigeration, in particular to a vertical oil separator and a refrigeration system. A vertical oil separator comprises a shell, a sleeve, a first baffle and a filter element, wherein an inner cavity is formed in the shell, the sleeve, the first baffle and the filter element are positioned in the inner cavity, the first baffle is arranged in the sleeve, and the filter element is positioned above the sleeve; an oil collecting groove is formed in one side, close to the filter element, of the first baffle, and the vertical oil separator further comprises an oil guide device, wherein the oil collecting groove is communicated with the oil guide device, so that the oil collecting groove is communicated with the inner cavity. The invention has the advantages that: lubricating oil can fully return to in the compressor, increases back oil volume, prevents that lubricating oil from gathering on first baffle, guarantees the separation effect of oil, ensures refrigerating system reliable and stable operation.

Description

Vertical oil separator and refrigerating system

Technical Field

The invention relates to the technical field of refrigeration, in particular to a vertical oil separator and a refrigeration system.

Background

In refrigerating system, lubricating oil in the compressor can be dissolved in the refrigerant, discharges along with the refrigerant together, leads to the confession liquid measure in the compressor not enough, influences the compressor and normally works, and simultaneously, lubricating oil gets into in condenser and the evaporimeter, can influence the heat exchange efficiency of condenser and evaporimeter, influences refrigerating system's performance. Therefore, in the refrigeration system, it is generally necessary to provide an oil separator for separating the lubricating oil carried out by the refrigerant and returning the lubricating oil to the compressor.

In current vertical oil separator, the gas-oil mixture is at the in-process that up flows, can form the offset with the oil droplet that drips on the filter assembly, lead to oil to drip can't lean on gravity to fall back, oil drips during the filter assembly that gets into the upper strata along the gas-oil mixture, and down drip to the baffle along the upper strata filter assembly inner wall, oil can amass discharge on the baffle, in long-time operation in-process, oil that can't fall back drips gets into upper filtering assembly along the gas-oil mixture, cause the oil content in the upper filtering assembly to increase, reduce vertical oil separator's branch oily effect, thereby reduce the oil return volume of compressor, influence refrigerating system's high efficiency and steady operation simultaneously.

Disclosure of Invention

Based on this, the invention provides a three-dimensional oil separator aiming at the technical problems, and the technical scheme is as follows:

a vertical oil separator comprises a shell, a sleeve, a first baffle and a filter element, wherein an inner cavity is formed in the shell, the sleeve, the first baffle and the filter element are positioned in the inner cavity, the first baffle is arranged in the sleeve, and the filter element is positioned above the sleeve; an oil collecting groove is formed in one side, close to the filter element, of the first baffle, and the vertical oil separator further comprises an oil guide device, wherein the oil collecting groove is communicated with the oil guide device, so that the oil collecting groove is communicated with the inner cavity.

So set up, the oil that flows down on the filter core can gather extremely in the oil trap, again certainly lead oily device water conservancy diversion extremely the bottom of inner chamber to make lubricating oil can fully return to in the compressor, prevent that lubricating oil gathering from being in on the first baffle, lead to the lubricating oil in the compressor less and less, influence the compressor and normally work.

In one embodiment of the present invention, the oil guiding device is an oil guiding pipe.

So set up, simple structure, with low costs.

In one embodiment of the present invention, the sleeve is uniformly opened with a plurality of openings along the circumferential direction, the oil conduit is provided with a plurality of oil conduits, and the plurality of oil conduits are respectively and correspondingly provided at the plurality of openings.

By the arrangement, the smoothness of oil guiding is further improved, so that the oil in the oil collecting tank can be guided out in time.

In one embodiment of the invention, an inner bottom wall of the opening in the axial direction of the vertical oil separator is flush with a bottom wall of the oil sump.

The arrangement is that the oil in the oil collecting groove can completely enter the oil guide pipe to prevent oil accumulation.

In one embodiment of the invention, the depth of the oil collecting groove is in inverse proportion to the length of the oil guide pipe along the axial direction of the vertical oil separator.

So set up, when the degree of depth of oil trap is when darker, it is shorter to lead oil pipe's length, works as when the degree of depth of oil trap is less, it is longer to lead oil pipe's length to make the pressure of leading interior lubricating oil of oil pipe be greater than lead the pressure of oil outside of the tubes, thereby make the lubricating oil in leading the oil pipe can flow smoothly.

In one embodiment of the present invention, the first baffle is provided with a protrusion, the protrusion is arranged along the circumferential direction of the first baffle, and the oil collecting groove is formed between the protrusion and the inner wall of the sleeve.

In one embodiment of the present invention, a projection of the filter element on the first baffle is located outside the protrusion, and a difference between an inner diameter of the filter element and an outer diameter of the protrusion is greater than or equal to 5 mm.

So set up to make the oil droplet on the filter core inner wall can all drip into in the oil catch bowl smoothly.

In one embodiment of the present invention, the filter element includes a wire mesh layer, a filter cotton layer, and a glass mesh layer, and the wire mesh layer, the filter cotton layer, and the glass mesh layer are stacked.

With this arrangement, the oil can be further effectively separated from the gaseous refrigerant.

In one embodiment of the present invention, the vertical oil separator further includes a filler layer and a second baffle, the second baffle is disposed in the sleeve, and the filler layer is disposed between the first baffle and the second baffle.

So set up, can carry out the prefiltration separation with the gas-oil mixture, separate the great granule of diameter in the oil granule in the gas-oil isolate.

In one embodiment of the present invention, the vertical oil separator further includes a partition plate disposed between the filter element and the sleeve to partition the inner cavity into a first cavity and a second cavity, the filter element is located in the second cavity, and the sleeve is located in the first cavity.

In one embodiment of the present invention, the first baffle plate is provided with a plurality of first through holes located inside the oil collecting tank, and the first through holes are respectively communicated with the first cavity and the second cavity.

So set up, gaseous refrigerant can get into the second chamber from the through-hole, and the oil droplet that the diameter is great remains in the first chamber.

In one embodiment of the present invention, the housing is provided with a first oil outlet and a second oil outlet, the first oil outlet is disposed near the bottom of the vertical oil separator and is communicated with the first chamber, and the second oil outlet is disposed near the partition and is communicated with the second chamber.

The invention also provides the following technical scheme:

a refrigeration system comprises the vertical oil separator.

Compared with the prior art, the oil collecting groove is formed in the first baffle plate, so that oil drops on the filter element can fall back into the oil collecting groove and then are led out to the bottom of the vertical oil separator through the oil guide device, the phenomenon that the oil drops directly fall down and an air-oil mixture flowing upwards form a collision to cause abnormal falling back can be avoided, the oil collecting groove can fully utilize the hydraulic pressure of an oil level, so that lubricating oil can smoothly enter the oil guide device to be led out, the lubricating oil can fully return to the compressor, and the lubricating oil is prevented from being gathered on the first baffle plate to reduce the oil return amount and influence the normal work of the compressor.

Drawings

FIG. 1 is a schematic structural view of a vertical oil separator provided by the present invention;

FIG. 2 is a schematic structural view of a first baffle of the vertical oil separator provided by the present invention;

FIG. 3 is a schematic structural view of a sleeve of a vertical oil separator provided in accordance with the present invention;

fig. 4 is a schematic structural view of a partition plate of the vertical oil separator provided by the invention.

The symbols in the drawings represent the following meanings:

100. a vertical oil separator; 10. a housing; 11. an inner cavity; 111. a first chamber; 112. a second chamber; 12. a first oil outlet; 13. a second oil outlet; 14. an air inlet; 15. an exhaust port; 16. a sewage draining outlet; 17. an access hole; 18. a liquid viewing mirror; 19. a high liquid level switch; 20. a first stage filter assembly; 21. a first baffle plate; 211. an oil sump; 212. a protrusion; 213. a first through hole; 22. a sleeve; 221. an oil guide pipe; 222. an opening; 23. a filler layer; 24. a second baffle; 30. a second stage filter assembly; 31. a filter element; 40. a partition plate; 50. a base.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present 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.

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 in the description of the invention herein 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 4, fig. 1 is a schematic structural view of a vertical oil separator 100 provided by the present invention, fig. 2 is a schematic structural view of a first baffle 21 of the vertical oil separator 100 provided by the present invention, fig. 3 is a schematic structural view of a sleeve 22 of the vertical oil separator 100 provided by the present invention, and fig. 4 is a schematic structural view of a partition plate 40 of the vertical oil separator 100 provided by the present invention.

The invention provides a vertical oil separator 100, which is applied to a refrigeration system and used for separating lubricating oil from a refrigerant, and returning the separated lubricating oil to a compressor (not shown) so as to ensure the normal operation of the compressor. In the present embodiment, the vertical oil separator 100 is used in a carbon dioxide refrigeration system, and in other embodiments, the vertical oil separator 100 may also be used in R134a, R404 or refrigeration systems using other types of refrigerants as media.

Lubricating oil in a compressor of the refrigeration system can ensure normal operation of the compressor, and in the working process of the refrigeration system, the lubricating oil can be dissolved in a refrigerant and is discharged from an exhaust port 15 of the compressor along with the refrigerant, so that insufficient oil supply in the compressor is caused, and the normal operation of the compressor is influenced; meanwhile, the lubricant oil entering the condenser (not shown) and the evaporator (not shown) reduces the heat exchange area of the refrigerant in the condenser and the evaporator, which affects the heat exchange efficiency of the condenser and the evaporator.

Referring to fig. 1 and 3, the vertical oil separator 100 at least includes a first-stage filtering assembly 20, a second-stage filtering assembly 30 and a casing 10, the casing 10 is hollow to form an inner cavity 11, the first-stage filtering assembly 20 and the second-stage filtering assembly 30 are disposed in the inner cavity 11, and the second-stage filtering assembly 30 is located above the first-stage filtering assembly 20. The high-speed gas-oil mixture enters the vertical oil separator 100 and rotates downwards at a high speed along the inner wall of the shell 10 to perform centrifugal separation, oil drops with larger diameters are thrown onto the inner wall of the shell 10 and flow downwards along the inner wall of the shell 10 to sink to the bottom of the vertical oil separator 100, the rest gas-oil mixture carries a part of lubricating oil stored at the bottom to flow upwards, the part of gas-oil mixture contains oil drops with the diameter of 100-150 mu m, in the process of flowing upwards, the oil drops with the larger diameters drop downwards due to the action of gravity, the rest of the gas-oil mixture is filtered by the first-stage filtering component 20, a part of oil is filtered, and the rest of the gas-oil mixture continues to flow upwards and is filtered by the second-stage filtering component 30 to separate the oil drops with larger diameters from the gas-oil mixture. It is to be explained that the gas-oil mixture is a mixture of refrigerant in gaseous state and lubricating oil from the compressor.

Specifically, the first stage filter assembly 20 includes a first baffle 21 and a sleeve 22, and the first baffle 21 is disposed in the sleeve 22.

In current vertical oil separator, the gas-oil mixture flows toward first order filter assembly's direction after partly lubricating oil is separated out through the effect of centrifugal force, forms the offset with the last oil droplet that drops down of first order filter assembly, causes the oil droplet in the first order filter assembly to fall back to vertical oil separator's bottom depending on the effect of gravity to make the oil content in the first order filter assembly increase. Oil drops in the first-stage filtering component enter the second-stage filtering component along with the gas-oil mixture, the oil drops fall back to the first baffle along with the inner wall of the second-stage filtering component, in the long-time working process, the oil accumulation problem can exist in the first baffle, the oil content in the first-stage filtering component is increased, the oil drops continuously enter the second-stage filtering component along with the gas-oil mixture, the oil content in the second-stage filtering component is increased, and the separation effect of the vertical oil separator is reduced.

According to the invention, the oil collecting groove 211 is formed in one side, facing the second-stage filtering component 30, of the first baffle 21, the vertical oil separator further comprises an oil guide device, the oil guide device is communicated with the oil collecting groove 211, and the oil guide device is communicated with the inner cavity 11, so that oil drops dropping from the first-stage filtering component 20 can be collected in the oil collecting groove 211, guided out from the oil guide device, flow into the inner cavity 11 and fall back to the bottom of the vertical oil separator 100, and the oil separating effect of the vertical oil separator 100 is enhanced.

It can be understood, oil sump 211 can collect the oil droplet that drips to first baffle 21, oil sump 211 can make the static pressure increase of lubricating oil, so that the oil droplet can get into smoothly and lead in the oily device, increase the recovery amount of lubricating oil, lubricating oil leads back to the bottom of vertical oil separator 100 from leading oily device, can avoid forming the offset and leading to the unable normal fall back of oil droplet with the gas-oil mixture that flows up, so set up, strengthen the branch oil effect, make more lubricating oil flow back to in the compressor, can avoid the lubricating oil deposit on first baffle 21. It is to be construed that the oil droplets of the present invention are referred to as lubricating oil.

Preferably, in this embodiment, the oil guiding device is an oil guiding pipe 221, and the oil guiding pipe 221 has a simple structure, a small volume, and a low cost, and in other embodiments, the oil guiding device may also be another oil guiding device capable of guiding out oil in the oil collecting tank 211, such as an oil suction pump.

Further, the side of the first baffle 21 adjacent to the second stage filter assembly 30 is provided with a protrusion 212, the protrusion 212 is arranged along the circumference of the first baffle 21, and an oil collecting groove 211 is formed between the protrusion 212 and the inner wall of the sleeve 22.

The sleeve 22 is provided with a plurality of openings 222 uniformly along the circumferential direction, the oil guide pipes 221 are provided in a plurality, and the oil guide pipes 221 are respectively and correspondingly arranged at the plurality of openings 222, so that the oil in the oil collecting tank 211 can be timely and effectively guided out, and when one opening 222 is blocked, the other openings 222 can also guide out the oil. In this embodiment, the number of the openings 222 is three, that is, the number of the oil guide pipes 221 is three, in other embodiments, the number of the openings 222 may also be four or another number, and the invention does not limit the number of the openings 222 and the oil guide pipes 221.

The inner bottom wall of the opening 222 in the axial direction of the vertical oil separator 100 is flush with the bottom wall of the oil sump 211, i.e., there is no step between the bottom wall of the oil sump 211 and the inner wall of the opening 222, so that oil droplets can smoothly enter the oil guide pipe 221.

Preferably, the depth of the oil sump 211 is inversely proportional to the length of the oil conduit 221 in the axial direction of the vertical oil separator 100. When the depth of the oil collecting groove 211 is deep, the length of the oil guide pipe 221 is short, and when the depth of the oil collecting groove 211 is shallow, the length of the oil guide pipe 221 is long, it can be understood that the pressure of the lubricating oil in the sleeve 22 is lower than the pressure outside the sleeve 22 due to the blocking of the first-stage filter assembly 20, and by such arrangement, the pressure of the lubricating oil in the oil guide pipe 221 is greater than the pressure outside the oil guide pipe 221 by the static pressure of the lubricating oil in the oil collecting groove 211 plus the liquid pressure of the lubricating oil in the oil guide pipe 221, so that the lubricating oil in the oil guide pipe 221 can smoothly flow out.

Referring to fig. 2, the first baffle 21 is provided with a plurality of first through holes 213, the first through holes 213 are located inside the protrusions 212, and the first through holes 213 are used for the circulation of the gas-oil mixture.

Specifically, the first-stage filter assembly 20 further includes a packing layer 23 and a second baffle 24, the packing layer 23 and the second baffle 24 are located in the sleeve 22, the packing layer 23 is located between the first baffle 21 and the second baffle 24, a plurality of second through holes (not shown) are formed in the second baffle 24, a gas-oil mixture with oil drops flows through the second through holes in the second baffle 24, the second through holes block a part of oil drops with a larger diameter from entering, and then are filtered through the packing layer 23, so that the lubricating oil in the gas-oil mixture is further separated, and a gaseous refrigerant and the lubricating oil with a smaller diameter enter the second-stage filter assembly 30 from the first through holes 213 in the first baffle 21. The first stage filter assembly 20 is capable of reducing the diameter of oil-containing particles of a gas-oil mixture to 50-80 μm.

Further, the second-stage filter assembly 30 includes a filter element 31, the filter element 31 is hollow and arranged to form a cylinder shape, the projection of the filter element 31 on the first baffle 21 is located outside the protrusion 212, and the difference between the inner diameter of the filter element 31 and the outer diameter of the protrusion 212 is greater than or equal to 5mm, that is, the distance between the inner wall of the filter element 31 and the outer wall of the protrusion 212 along the radial direction of the vertical oil separator 100 is greater than or equal to 5 mm. It can be understood that the pressure outside the filter element 31 is smaller than the pressure inside the filter element 31, the air-oil mixture flows from the inside of the filter element 31 to the outside of the filter element 31 under the action of the pressure difference, and in the flowing process, the oil drops with larger diameters drop along the inner wall of the filter element 31 after being separated again by the filter element 31, and the distance between the inner wall of the filter element 31 and the outer wall of the protrusion 212 is greater than or equal to 5mm, so that the oil drops on the inner wall of the filter element 31 can fully drop into the oil collecting tank 211, and the oil return amount of the lubricating oil is increased.

In this embodiment, the filter element 31 has a cylindrical shape, and the oil sump 211 is provided in a circular ring shape corresponding to the filter element 31, but in other embodiments, the filter element 31 may have a square cylindrical shape or other structures, and the shapes of the filter element 31 and the oil sump 211 are not limited in the present invention.

The filter element 31 comprises a metal wire mesh layer (not marked in the figure), a filter cotton layer (not marked in the figure) and a glass wire mesh layer (not marked in the figure), the metal wire mesh layer, the filter cotton layer and the glass wire mesh layer are arranged in a stacked mode, the density of the filter element 31 is larger than that of the filler layer 23, lubricating oil with a smaller diameter can be separated, and gaseous refrigerant can be fully separated from the lubricating oil. The diameter of the oil-containing particles of the gas-oil mixture can be reduced to 10 μm or less by filtering with the filter element 31. The filter element 31 is not limited to include the three types, and the filter element 31 may further include other filter layers such as a glass fiber filter paper layer.

Referring to fig. 4, the vertical oil separator 100 further includes a partition 40, the partition 40 is disposed in the inner cavity 11 and located between the first-stage filtering assembly 20 and the second-stage filtering assembly 30 to divide the inner cavity 11 into a first cavity 111 and a second cavity 112, the first-stage filtering assembly 20 is located in the first cavity 111, and the second-stage filtering assembly 30 is located in the second cavity 112. The sleeve 22 is fixed on the partition 40, the second stage filter assembly 30 is fixed on the partition 40, and the partition 40 is annular, so that the gas-oil mixture flowing out of the first through hole 213 can enter the second stage filter assembly 30.

Further, a first oil outlet 12 and a second oil outlet 13 are formed in the housing 10, the first oil outlet 12 is disposed near the bottom of the vertical oil separator 100 and is communicated with the first chamber 111, and the second oil outlet 13 is disposed near the partition plate 40 and is communicated with the second chamber 112. The first oil outlet 12 is communicated with the compressor, and the lubricating oil deposited at the bottom of the vertical oil separator 100 returns to the compressor from the first oil outlet 12. When the gas-oil mixture passes through the filter element 31, a part of the lubricating oil is separated by the filter element 31 and drips along the wall surface of the inner side of the filter element 31, the rest part of the lubricating oil passes through the filter element 31, and a part of the gas-oil mixture which penetrates out of the filter element 31 flows down along the outer side wall of the filter element 31 under the action of gravity, drips onto the partition plate 40 and flows out of the second oil outlet 13 to the suction port of the compressor.

The casing 10 is provided with an air inlet 14 and an air outlet 15, the air inlet 14 is provided below the partition plate 40 and communicated with the first chamber 111, the air inlet 14 is provided near the partition plate 40 so that the air-oil mixture entering from the air inlet 14 has a sufficient space for centrifugal separation, the air outlet 15 is communicated with the second chamber 112, and the gaseous refrigerant and the lubricating oil having a diameter of 10 μm or less separated by the filter element 31 are discharged from the air outlet 15. The air inlet 14 and the air outlet 15 are arranged perpendicular to the housing.

Preferably, the casing 10 is further provided with a drain outlet 16 and an access opening 17, the drain outlet 16 is arranged near the bottom of the casing 10 and is used for removing impurities in the casing 10, and the access opening 17 is used for performing access when the vertical oil separator 100 fails.

The casing 10 is further provided with a liquid observation mirror 18 and a high liquid level switch 19, the liquid observation mirror 18 is used for observing the amount of oil in the first cavity 111, and the high liquid level switch 19 is used for controlling the liquid level of the lubricating oil in the first cavity 111.

The vertical oil separator 100 further includes a base 50, the casing 10 is fixed to the base 50, and the base 50 is used for fixing the casing 10 and mounting the vertical oil separator 100.

During operation, the gas-oil mixture with a high flow rate enters the housing 10 from the gas inlet 14, rotates downwards at a high speed along the inner wall of the housing 10 to perform centrifugal separation, and oil drops with a large diameter drop down along the inner wall of the housing 10 under the action of centrifugal force and are deposited at the bottom of the vertical oil separator 100; the gas-oil mixture of high temperature low speed flows upwards, and at the in-process that flows, the great oil droplet of diameter separates because of the action of gravity, drips to the bottom of vertical oil separator 100, and remaining gas-oil mixture filters through first order filtering component 20, filters through the second filtering component, discharges from gas vent 15. Part of the oil drops drop into the oil collecting tank 211 along the filter element 31 and are discharged from the oil guide device to the bottom of the vertical oil separator 100.

The invention also provides a refrigeration system which comprises the vertical oil separator.

The vertical oil separator 100 of the invention can effectively solve the problem of oil accumulation of the first baffle 21, increase the oil return amount, has high gas-oil separation efficiency, can reduce the diameter of oil-containing particles in a gas-oil mixture to be less than 10 mu m, and ensures the stable and reliable operation of a refrigeration system.

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 express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (13)

1. A vertical oil separator comprises a shell (10), a sleeve (22), a first baffle plate (21) and a filter element (31), wherein an inner cavity (11) is formed in the shell (10), the sleeve (22), the first baffle plate (21) and the filter element (31) are positioned in the inner cavity (11), the first baffle plate (21) is arranged in the sleeve (22), and the filter element (31) is positioned above the sleeve (22);

the vertical oil separator is characterized in that an oil collecting groove (211) is formed in one side, close to the filter element (31), of the first baffle plate (21), the vertical oil separator further comprises an oil guide device, and the oil collecting groove (211) is communicated with the oil guide device so that the oil collecting groove (211) is communicated with the inner cavity (11).

2. The vertical oil separator according to claim 1 wherein said oil-conducting means is an oil-conducting pipe (221).

3. The vertical oil separator according to claim 2, wherein the sleeve (22) is circumferentially and uniformly provided with a plurality of openings (222), the oil conduit (221) is provided in plurality, and the oil conduit (221) is correspondingly provided at the plurality of openings (222).

4. The vertical oil separator according to claim 3, wherein an inner bottom wall of the opening (222) in an axial direction of the vertical oil separator is disposed flush with a bottom wall of the oil sump (211).

5. The vertical oil separator according to claim 2 wherein the depth of the oil sump (211) is inversely related to the length of the oil conduit (221) in the axial direction of the vertical oil separator.

6. The vertical oil separator according to claim 1, wherein the first baffle (21) is provided with a projection (212), the projection (212) being disposed along a circumferential direction of the first baffle (21), the oil sump (211) being formed between the projection (212) and an inner wall of the sleeve (22).

7. The vertical oil separator according to claim 6, wherein a projection of the filter element (31) on the first baffle (21) is located outside the protrusion (212), and a difference between an inner diameter of the filter element (31) and an outer diameter of the protrusion (212) is greater than or equal to 5 mm.

8. The vertical oil separator according to claim 1, wherein the filter element (31) comprises a wire mesh layer, a cotton filter layer, and a glass mesh layer, the wire mesh layer, the cotton filter layer, and the glass mesh layer being stacked.

9. The vertical oil separator according to claim 1, further comprising a filler layer (23) and a second baffle (24), said second baffle (24) being disposed within said sleeve (22), said filler layer (23) being disposed between said first (21) and second (24) baffles.

10. The vertical oil separator according to claim 1, further comprising a partition (40), said partition (40) being disposed between said filter element (31) and said sleeve (22) to divide said internal chamber (11) into a first chamber (111) and a second chamber (112), said filter element (31) being located within said second chamber (112), said sleeve (22) being located within said first chamber (111).

11. The vertical oil separator according to claim 10, wherein the first baffle (21) is provided with a plurality of first through holes (213) located inside the oil sump (211), and the first through holes (213) are respectively communicated with the first chamber (111) and the second chamber (112).

12. The vertical oil separator according to claim 10, wherein said housing (10) is provided with a first oil outlet (12) and a second oil outlet (13), said first oil outlet (12) being disposed near the bottom of said vertical oil separator and communicating with said first chamber (111), said second oil outlet (13) being disposed near said partition (40) and communicating with said second chamber (112).

13. A refrigeration system comprising a vertical oil separator according to any one of claims 1 to 12.

Images