Oil separator and refrigerating system

Abstract

The utility model provides an oil separator and a refrigerating system, which comprises a separating tank, an oil tank and a refrigerating system, one end of the air inlet pipe is communicated into the separation cavity, and the other end of the air inlet pipe is communicated outside the separation cavity; the gas-liquid separation device is arranged in the separation cavity, the gas-liquid separation device is provided with a separation channel communicated with the gas inlet pipe, and gas and oil liquid in gas flow in the separation channel are separated in the separation channel; wherein the number of the gas-liquid separation devices is at least two. According to the oil separator, the technical problem that the oil return efficiency is affected when the flow speed of airflow in an oil separator is high in the prior art is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of oil and gas separation, in particular to an oil separator and a refrigeration system. Background Art

[0002] In the refrigeration system, the high-temperature and high-pressure refrigerant gas discharged from the variable frequency compressor usually contains a large amount of lubricating oil. Although the lubricating oil can lubricate the compressor motor bearings and rotor, if too much lubricating oil enters the heat exchanger with the refrigerant, it will form an oil film on the heat exchange tube, affecting the heat transfer efficiency. Therefore, the refrigerant circulating in the refrigeration system must pass through an oil separator to separate the oil and gas.

[0003] The working principle of an oil separator is generally to reduce the flow rate of the mixed gas or change its direction, allowing the oil droplets to separate from the refrigerant gas under the action of centrifugal force and gravity. Currently, oil separators mainly use several separation methods, including washing, centrifugal, filtration, packing, adsorption, gravity sedimentation, and collision. Different separation methods have different stability and separation effects, and therefore are used in different ways.

[0004] In the existing technology, there are problems such as high gas flow rate and unreasonable flow field design in the oil separator. The gaseous refrigerant impacts the refrigeration oil collected at the bottom of the separation tank, resulting in oil droplet splashing, liquid vortex, liquid level fluctuation, etc. The exhaust gas is likely to carry oil droplets and affect the stable operation of the liquid level gauge or oil level mirror; at the same time, foam is generated on the liquid surface, which will reduce the oil return efficiency of the unit's return oil pipe, and thus cause system false alarms and other faults.

[0005] Therefore, the prior art needs to be further developed. Utility Model Content

[0006] The purpose of the present invention is to overcome the above technical deficiencies and provide an oil separator and a refrigeration system to solve the technical problem in the related art that when the air flow velocity in the oil separator is high, the oil return efficiency is affected.

[0007] In order to achieve the above technical objectives, the utility model adopts the following technical solutions: an oil separator is provided, including: a separation tank, a separation chamber is provided in the separation tank; an air intake pipe, one end of the air intake pipe is connected to the separation chamber, and the other end of the air intake pipe is connected to the outside of the separation chamber; a gas-liquid separation device, the gas-liquid separation device is arranged in the separation chamber, the gas-liquid separation device has a separation channel connected to the air intake pipe, and the separation channel is used to separate the gas and oil in the air flow in the separation channel; wherein, there are at least two gas-liquid separation devices.

[0008] Furthermore, the gas-liquid separation device includes: a first connecting plate and a second connecting plate arranged at intervals; a separation plate, the separation plate is located between the first connecting plate and the second connecting plate, the separation plate, the first connecting plate and the second connecting plate form a separation channel, the separation channel is connected to the air intake pipe, and the separation channel is connected to the separation chamber; an oil drain hole is provided on the second connecting plate, and the oil drain hole connects the separation channel and the separation chamber.

[0009] Furthermore, the separation plate is spirally extended so that the separation plate has an inner partition and an outer partition located on a side of the inner partition away from the air intake pipe, and the separation channel is located between the inner partition and the outer partition.

[0010] Furthermore, the distance between the inner partition and the outer partition gradually increases in a direction away from the air intake pipe.

[0011] Furthermore, an oil baffle is provided on the outer baffle, and the oil baffle is provided to protrude from the surface of the outer baffle to block the fluid in the separation channel through the oil baffle; the oil drain hole is located at the oil baffle, and the oil drain hole is located upstream of the oil baffle.

[0012] Furthermore, there are multiple oil baffles, which are arranged at intervals; and / or there are multiple oil drainage holes, which are arranged at intervals.

[0013] Furthermore, the oil separator also includes a collecting component, which has an oil collecting channel. One end of the oil collecting channel is provided with an oil outlet connected to the separation chamber, and the oil outlet is located below the gas-liquid separation device.

[0014] Furthermore, the collecting component includes: a collecting part, which is connected to the second connecting plate and is located below the oil drain hole to receive the oil flowing out of the oil drain hole; a guiding part, one end of the guiding part is connected to the collecting part, and the other end of the guiding part extends in the direction of the collecting part away from the separation channel, and the oil outlet is arranged at the end of the guiding part away from the collecting part.

[0015] Furthermore, the first connecting plate and the second connecting plate are provided with connecting holes for the air intake pipe to pass through, and the collecting part is provided around the connecting holes; and / or,

[0016] There are at least two guiding parts, and at least two guiding parts are connected to the collecting part; the oil collecting channel includes a first oil collecting channel located in the collecting part and a second oil collecting channel located in the guiding part; each second oil collecting channel is connected through the first oil collecting channel.

[0017] Furthermore, at least two air outlets are provided on the air inlet pipe, and the at least two air outlets are arranged at intervals in the vertical direction; the separation channels of at least two gas-liquid separation devices are connected to the at least two air outlets in a one-to-one correspondence; and at least two gas-liquid separation devices are stacked in sequence in the vertical direction.

[0018] Furthermore, the oil separator further comprises a stabilizing device, which is arranged in the separation chamber and located below the gas-liquid separation device. The stabilizing device comprises: a connecting shaft;

[0019] Multiple baffles are arranged around the connecting shaft; the multiple baffles are all connected to the connecting shaft; the liquid baffle is connected to the connecting shaft, the liquid baffle is located above the multiple baffles to block the oil at the bottom of the separation chamber; the floating plate is connected to the multiple baffles, the floating plate is located between the liquid baffle and the multiple baffles, and the floating plate floats according to the liquid level of the oil.

[0020] Furthermore, the stabilization device also includes: a positioning block, which is arranged on the inner wall of the separation tank; a movable ring, which is arranged around multiple partitions and has a positioning groove, and at least part of the positioning block is located in the positioning groove to prevent the movable ring from rotating and enable the movable ring to be movably arranged along the extension direction of the positioning block.

[0021] A refrigeration system includes an oil separator, wherein the oil separator is the above-mentioned oil separator.

[0022] Beneficial effects:

[0023] 1. The oil separator of the utility model is provided with multiple modules that can be stacked in a limited structural space, and the oil and gas separation is carried out through multi-channel diversion processing to improve the separation efficiency.

[0024] 2. The spiral gas-liquid separation channel of the oil separator of the utility model has a centrifugal force that gradually increases from the inner circle to the outer circle, the flow area increases and the flow rate decreases. An oil baffle and an oil drain hole are set every half circle in the channel, combining centrifugal separation and collision separation to enhance the separation effect.

[0025] 3. The cross section of the separation channel of the oil separator of the present invention increases from the inner ring to the outer ring, and the gas flow rate decreases, which is conducive to the sedimentation of droplets and enhances the separation effect.

[0026] 4. The gas discharged from the outermost ring of the oil separator of the utility model rotates and flows downward along the inner wall of the cylinder. When the gas blows to the liquid surface, it is intercepted by multiple partitions of the partition anti-vortex device, avoiding the liquid vortex caused by the rotating gas.

[0027] 5. The oil separator of the present invention has multiple partition plates that divide the liquid surface into multiple smaller areas, which can reduce the range of liquid surface fluctuation caused by airflow impacting the liquid.

[0028] 6. The floating plate on the top of the partition plate of the oil separator of the utility model can ensure that the partition plate is always located at the top of the liquid level, thereby enhancing the reliability of preventing liquid level fluctuations.

[0029] 7. The liquid baffle on the top of the oil separator partition anti-vortex device of the utility model can not only block the splashing droplets from being discharged with the air flow, but also collect the droplets stirred up by the liquid surface fluctuation under the liquid baffle, thereby ensuring the effect of gas-liquid separation.

[0030] 8. The oil separator positioning block of the utility model can axially position the partition device to prevent the partition device from rotating, and can also limit the maximum floating liquid level of the partition device to control the maximum liquid storage capacity. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a schematic structural diagram of the overall structure of the oil separator used in the embodiment of the present utility model;

[0032] Figure 2 This is a schematic diagram of the internal structure of the oil separator used in the embodiment of the present utility model;

[0033] Figure 3 This is a schematic structural diagram of the collection component of the oil separator used in the embodiment of the present utility model;

[0034] Figure 4 This is a schematic diagram of the structure of the gas-liquid separation device of the oil separator used in the embodiment of the utility model;

[0035] Figure 5 This is a schematic structural diagram of the collection component of the oil separator used in the embodiment of the present utility model;

[0036] Figure 6 It is a structural schematic diagram of the stabilizing device of the oil separator adopted in the embodiment of the present utility model.

[0037] The above drawings include the following reference numerals:

[0038] 1. Separation tank; 11. Separation chamber; 12. Air inlet pipe; 121. Air outlet; 2. Gas-liquid separation device; 21. Separation channel; 22. First connecting plate; 23. Second connecting plate; 24. Separation plate; 241. Inner partition; 242. Outer partition; 2421. Oil baffle; 2422. Oil drain hole; 25. Connecting hole; 3. Collecting component; 30. Collecting part; 31. Oil collection channel; 32. Oil outlet; 33. Guide part; 4. Stabilizing device; 41. Connecting shaft; 42. Partition; 43. Liquid baffle; 44. Floating plate; 45. Positioning block; 46. Moving ring; 5. Air outlet pipe; 6. Oil drain pipe. DETAILED DESCRIPTION

[0039] In order to enable those skilled in the art to better understand the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of this application.

[0040] According to an embodiment of the present invention, an oil separator is provided. Figures 1 to 6 , including: a separation tank 1, the separation tank 1 has a separation chamber 11; an air intake pipe 12, one end of the air intake pipe 12 is connected to the separation chamber 11, and the other end of the air intake pipe 12 is connected to the outside of the separation chamber 11; a gas-liquid separation device 2, the gas-liquid separation device 2 is arranged in the separation chamber 11, the gas-liquid separation device 2 has a separation channel 21 connected to the air intake pipe 12, and the separation channel 21 is used to separate the gas and oil in the airflow in the separation channel 21; wherein, there are at least two gas-liquid separation devices 2.

[0041] With the above arrangement, the oil-gas mixture enters the separation tank 1 of the oil separator through the air intake pipe 12, first reaches the gas-liquid separation device 2 through the air intake pipe 12, and flows into the separation channel 21, where it is separated through the separation channel 21, thus achieving oil-gas separation. At least two gas-liquid separation devices 2 are provided, and the number of gas-liquid separation devices 2 is changed according to the different air intake amounts. When there are at least two gas-liquid separation devices 2, when the gas flow increases, the gas enters multiple gas-liquid separation devices 2 from the air intake pipe 12 for gas-liquid separation. The more channels there are, the slower the flow rate is, which can enhance the separation effect when the flow rate increases, allowing the oil separator to adapt to large air intake volumes. Thus, when the air intake volume is large and the wind speed is high, the oil-gas mixture can be fully separated, solving the technical problem of affecting the oil return efficiency when the air flow rate in the oil separator is high.

[0042] According to an embodiment of the present invention, an oil separator is provided. Figures 1 to 4 , including: a first connecting plate 22 and a second connecting plate 23 arranged at intervals; a separation plate 24, the separation plate 24 is located between the first connecting plate 22 and the second connecting plate 23, the separation plate 24, the first connecting plate 22 and the second connecting plate 23 surround a separation channel 21, the separation channel 21 is connected to the intake pipe 12, and the separation channel 21 is connected to the separation chamber 11; the second connecting plate 23 is provided with an oil drain hole 2422, the oil drain hole 2422 connects the separation channel 21 and the separation chamber 11.

[0043] Specifically, centrifugal separation using the separation channel 21 and collision separation using the separation plate 24 are used.

[0044] With the above-mentioned arrangement, the gas-liquid separation device 2 is approximately disc-shaped as a whole. When the oil-gas mixture flows into the gas-liquid separation device 2, the oil-gas mixture moves along the separation channel 21. The separation plate 24 is vertically connected between the first connecting plate 22 and the second connecting plate 23, forming the horizontal part of the separation channel 21. Under the action of the separation plate 24, the oil-gas mixture moves centrifugally along the orbit formed by the spiral of the separation plate 24. The oil and gas are separated under the action of centrifugal force and the collision of the separation plate 24. The separated gas has a lower density and flows out through the outlet pipe 5 after passing through the separation chamber 11.

[0045] Specifically, in practical applications, multiple gas-liquid separation devices 2 can be provided, and different oil-gas separation requirements can be met by stacking multiple modules, thereby improving separation efficiency.

[0046] According to an embodiment of the present invention, an oil separator is provided. Figures 1 to 4 , including: the separation plate 24 is spirally extended so that the separation plate 24 has an inner partition 241 and an outer partition 242 located on the side of the inner partition 241 away from the intake pipe 12, and the separation channel 21 is located between the inner partition 241 and the outer partition 242.

[0047] With the above arrangement, the separation plate 24 is spirally rolled into a vortex-shaped separation channel 21 at a certain interval, relatively close to the center of the disc of the gas-liquid separation device 2. One end of the intake pipe 12 is regarded as the inner partition 241, and the separation plate corresponding to the separation channel 21 is regarded as the outer partition 242. The inner partition 241 and the outer partition 242 are arranged relative to each other to form the vortex-shaped separation channel 21 of this structure, which achieves the goal of gradually increasing centrifugal force from the inner circle to the outer circle, increasing the flow area and reducing the flow rate, thereby better realizing gas-liquid separation.

[0048] In the oil separator of this embodiment, please refer to Figures 1 to 4 , including: the distance between the inner partition 241 and the outer partition 242 gradually increases in the direction away from the intake pipe 12.

[0049] With the above arrangement, the cross section of the separation channel 21 increases from the inner circle to the outer circle. In this way, the flow rate of the oil-gas mixture decreases as the relative space increases, which is beneficial to the sedimentation of droplets and enhances the separation effect.

[0050] According to an embodiment of the present invention, an oil separator is provided. Figures 1 to 4 , including: an oil baffle 2421 is provided on the outer baffle 242, the oil baffle 2421 is protruding from the surface of the outer baffle 242 to block the fluid in the separation channel 21 through the oil baffle 2421; the oil drain hole 2422 is located at the oil baffle 2421, and the oil drain hole 2422 is located upstream of the oil baffle 2421.

[0051] With the above-mentioned arrangement, an oil baffle 2421 and an oil drain hole 2422 are provided in each half circle of the vortex channel of the separation channel 21. The separated oil-gas mixture collides with the oil baffle 2421 under the action of centrifugal force. Combined with centrifugal separation and collision separation, the oil is separated and the oil is discharged from the separation channel 21 through the oil drain hole 2422, thereby realizing separation and achieving a better enhanced separation effect.

[0052] According to an embodiment of the present invention, an oil separator is provided. Figures 1 to 4 , including: there are multiple oil baffles 2421, and the multiple oil baffles 2421 are arranged at intervals; and / or there are multiple oil drainage holes 2422, and the multiple oil drainage holes 2422 are arranged at intervals.

[0053] Specifically, multiple spaced oil baffles 2421 and oil drain holes 2422 are more conducive to evenly discharging the oil from the separation channel 21, so that the oil separated by the separation channel 21 is discharged more evenly without accumulating the oil in a certain position and thus preventing blockage.

[0054] According to an embodiment of the present invention, an oil separator is provided. Figures 1 to 5 , including: a collecting component 3, which has an oil collecting channel 31, and one end of the oil collecting channel 31 is provided with an oil outlet 32 ​​connected to the separation chamber 11, and the oil outlet 32 ​​is located below the gas-liquid separation device 2.

[0055] With the above arrangement, a collecting component 3 is provided below the gas-liquid separation device 2, and the collecting component 3 includes an oil collecting channel 31. When the oil flows into the collecting component 3, the oil collecting channel 31 temporarily stores the oil therein and guides the oil to the oil outlet 32 ​​at one end of the oil collecting channel 31, thereby achieving the purpose of temporary storage and guidance of the oil.

[0056] According to an embodiment of the present invention, an oil separator is provided. Figures 1 to 5 , including: a collecting portion 30, the collecting portion 30 is connected to the second connecting plate 23, the collecting portion 30 is located below the oil drain hole 2422 to receive the oil flowing out of the oil drain hole 2422; a guide portion 33, one end of the guide portion 33 is connected to the collecting portion 30, and the other end of the guide portion 33 extends in the direction of the collecting portion 30 away from the separation channel 21, and the oil outlet 32 ​​is provided at an end of the guide portion 33 away from the collecting portion 30.

[0057] With the above arrangement, after the oil flows out through the oil drain hole 2422, it flows along the collecting part 30 connected to the second connecting plate 23, enters the oil collecting channel 31, and finally merges into the guiding part 33, and is discharged from the collecting part 3 from the oil outlet 32, thereby achieving the guidance of the separated oil.

[0058] Specifically, when the oil drips from the oil outlet 32 ​​, it will be guided by the guide portion 33 along the inner wall of the separation chamber 11 and flow downward to the bottom of the separation chamber 11 due to the force of gravity.

[0059] According to an embodiment of the present invention, an oil separator is provided. Figures 1 to 5 , including: a connecting hole 25 for the intake pipe 12 to pass through is provided on the first connecting plate 22 and the second connecting plate 23, and the collecting part 30 is arranged around the connecting hole 25; and / or, there are at least two guide parts 33, and at least two guide parts 33 are connected to the collecting part 30; the oil collecting channel 31 includes a first oil collecting channel located in the collecting part 30 and a second oil collecting channel located in the guide part 33; each second oil collecting channel is connected through the first oil collecting channel.

[0060] Specifically, when multiple modules are stacked and multiple gas-liquid separation devices 2 are connected, corresponding multiple collecting components 3 are also used, which achieve the discharge of oil when multiple modules are stacked through multiple connections between the guide part 33 and the oil outlet 32.

[0061] According to an embodiment of the present invention, an oil separator is provided. Figures 1 to 4 , including: at least two air outlets 121 are provided on the air inlet pipe 12, and the at least two air outlets 121 are arranged at intervals in the vertical direction; the separation channels 21 of at least two gas-liquid separation devices 2 are connected to the at least two air outlets 121 in a one-to-one correspondence; at least two gas-liquid separation devices 2 are stacked in sequence along the vertical direction.

[0062] Specifically, as multiple gas-liquid separation devices 2 are stacked, the number of gas outlets 121 on the air inlet pipe 12 is increased accordingly to meet different separation requirements, and oil and gas separation is performed through multi-channel diversion processing to improve separation efficiency.

[0063] According to an embodiment of the present invention, an oil separator is provided. Figure 1 、 Figure 2 and Figure 6 , including: the oil separator also includes a stabilizing device 4, the stabilizing device 4 is arranged in the separation chamber 11, the stabilizing device 4 is located below the gas-liquid separation device 2, the stabilizing device 4 includes: a connecting shaft 41; a plurality of baffles 42, the plurality of baffles 42 are arranged around the connecting shaft 41; the plurality of baffles 42 are all connected to the connecting shaft 41; a liquid baffle 43, the liquid baffle 43 is connected to the connecting shaft 41, the liquid baffle 43 is located above the plurality of baffles 42 to block the oil at the bottom of the separation chamber 11; a floating plate 44, the floating plate 44 is connected to the plurality of baffles 42, the floating plate 44 is located between the liquid baffle 43 and the plurality of baffles 42, and the floating plate 44 floats according to the liquid level of the oil.

[0064] Specifically, the liquid surface is divided into a plurality of smaller areas by using a plurality of partitions 42, so that the range of liquid surface fluctuation caused by the impact of the airflow on the liquid can be reduced.

[0065] With the above arrangement, when the oil is guided to the bottom of the separation chamber 11, it will first contact the partition 42 surrounding the connecting shaft 41, and disperse the original momentum of the oil through rotation, thereby reducing the splashing of the oil surface. The liquid baffle 43 set at the top further blocks the remaining splashing liquid, allowing it to re-enter the partition and rotate, and finally enter the liquid surface smoothly. The float 44 can ensure that the partition 42 is always at the top of the liquid level, prevent the liquid level from fluctuating, and enhance the reliability of the stabilization device.

[0066] According to an embodiment of the present invention, an oil separator is provided. Figures 1 to 6 , including: a positioning block 45, which is arranged on the inner wall of the separation tank 1; a moving ring 46, which is arranged around multiple partitions 42, and a positioning groove is provided on the moving ring 46, at least part of the positioning block 45 is located in the positioning groove to prevent the moving ring 46 from rotating, and the moving ring 46 is movably arranged along the extending direction of the positioning block 45.

[0067] With the above arrangement, the extending direction of the positioning block 45 forms a track, and the positioning groove fixes the movable ring 46. When the liquid level rises, the movable ring 46, the partition 42 and other structures are driven to rise. The movable ring 46 can axially position the partition 42 to prevent the partition 42 from rotating. It can also limit the maximum liquid level at which the partition 42 floats and control the maximum liquid storage capacity.

[0068] The refrigeration system of this embodiment includes an oil separator, and the oil separator is the above-mentioned oil separator.

[0069] The refrigeration system of this embodiment adopts the above-mentioned oil separator, which can improve the oil and gas separation efficiency in the system, thereby ensuring the working efficiency of the refrigeration system.

[0070] Example 1:

[0071] The oil separator of this embodiment is as follows Figure 1 As shown, its structure includes a separation tank 1, an air inlet pipe 12, an air outlet pipe 5, an oil discharge pipe 6, a gas-liquid separation device 2, a collecting component 3, a stabilizing device 4, and a positioning block 45. The oil-gas mixture enters the oil separator from the air inlet pipe 12, undergoes centrifugal separation in the separation channel 21 in the gas-liquid separation device 2, and undergoes collision separation on the oil baffle. Finally, the refrigerant gas is discharged from the air outlet pipe 5, and the lubricating oil is discharged from the oil outlet pipe. The flow direction of the refrigerant gas is as follows: Figure 2 As indicated by the arrow.

[0072] Example 2:

[0073] The oil separator of this embodiment is provided with a gas-liquid separation device 2 and a collection component 3 assembly. Figure 3 As shown, the oil collecting channel of the collecting component 3 is opposite to the oil drain hole 2422 at the bottom of the gas-liquid separation device 2, and the oil separated from the gas-liquid separation device 2 flows into the collecting component 3 through the oil drain hole 2422. Figure 6 As shown, it flows along the channel to the bottom of the cylinder to prevent the oil from falling directly vertically from a high place, which is easy to cause violent fluctuations in the liquid level in the oil storage area and easy to mix with the air flow in the cylinder again to affect the separation effect; or multiple gas-liquid separation devices 2 and collection components 3 are set up and stacked, such as Figure 1 As shown, when the gas flow increases, the gas enters multiple gas-liquid separation devices 2 from the air inlet pipe 12 for gas-liquid separation. The more channels there are, the slower the flow rate is, which can enhance the separation effect when the flow increases.

[0074] Example 3:

[0075] The oil separator of this embodiment is as follows Figure 1 As shown, the internal oil storage area is provided with a stabilizing device 4, the partition plate is immersed below the liquid surface, and the floating plate floats above the liquid surface; a positioning block 45 is provided on the inner wall of the oil storage area cylinder, as shown in FIG. Figure 2 As shown, the partition plate is embedded in the oil collection channel of the positioning block 45 to fix the floating device axially to prevent it from rotating; the top of the oil collection channel of the positioning block 45 is closed to limit the maximum height to which the floating device can rise.

[0076] Example 4:

[0077] The gas-liquid separation device 2 of this embodiment is as follows Figure 4 、 Figure 5 As shown, its structure includes a separation plate 24, an oil drain hole 2422, and an oil baffle 2421. The oil-gas mixture enters the inner circle of the separation plate 24 of the gas-liquid separation device 2 from the central air inlet connected to the air inlet pipe 12. As the radius of the separation plate 24 gradually increases, the centrifugal force of the oil droplets entrained in the gas also increases, and centrifugal separation is performed in the separation channel 21; the flow cross-sectional area of ​​the separation channel 21 gradually increases from the inner circle to the outer circle, and the gas flow rate decreases; an oil baffle 2421 is set every half circle of the separation plate 24, and the oil baffle 2421 is close to the outside of the separation channel 21. There is no specific requirement for the width but it does not exceed half the width of the channel; along the direction of air flow, a number of oil drain holes 2422 are set in front of the oil baffle 2421, and there is no specific requirement for the hole diameter and spacing. Under the action of centrifugal force, the oil droplets flow along the outside of the separation channel 21 with the gas, and then collide and separate at the oil baffle 2421. The separated oil flows along the oil baffle 2421 to the oil drain hole 2422 in front of the oil baffle 2421 and is discharged from the gas-liquid separation device 2; the air flow continues to flow forward along the separation channel 21 through the gap next to the oil baffle 2421 and flows out from the outer ring outlet of the separation channel 21.

[0078] Example 5

[0079] The structure of this embodiment includes a liquid baffle 43, a float 44, and a partition 42. Several partitions 42 are installed at the bottom, with a width smaller than the inner diameter of the cylinder to ensure interconnectedness between partitions and avoid differences in liquid level between partitions. There are no specific requirements for the number and height of the partitions 42. A float 44, made of a highly buoyant material, is installed on top of the partitions 42. This float drives the entire floating device up and down as the liquid level rises and falls. A circular liquid baffle 43, with a diameter smaller than the width of the baffle 42, is installed at the top. When oil drops onto the liquid surface and causes liquid level fluctuations, the liquid baffle 43 can block the oil droplets that splash out from the liquid surface, collect the oil droplets, and return them to the oil storage area.

[0080] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in a sequence other than those illustrated or described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0081] Optionally, the specific examples in this embodiment may refer to the examples described in the above embodiments, and this embodiment will not be described in detail here.

[0082] The serial numbers of the above embodiments of the present application are for description only and do not represent the advantages or disadvantages of the embodiments.

[0083] In the above embodiments of the present application, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, please refer to the relevant description of other embodiments.

[0084] The above is only a preferred embodiment of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. An oil separator, characterized in that: include: A separation tank (1), wherein the separation tank (1) has a separation chamber (11); an air intake pipe (12), one end of the air intake pipe (12) being connected to the interior of the separation chamber (11), and the other end of the air intake pipe (12) being connected to the exterior of the separation chamber (11); A gas-liquid separation device (2), the gas-liquid separation device (2) being arranged in the separation chamber (11), the gas-liquid separation device (2) having a separation channel (21) communicating with the air inlet pipe (12), the separation channel (21) being used to separate gas and oil in the air flow in the separation channel (21); wherein there are at least two gas-liquid separation devices (2).

2. The oil separator according to claim 1, characterized in that The gas-liquid separation device (2) comprises: A first connecting plate (22) and a second connecting plate (23) are arranged at intervals; A separation plate (24), the separation plate (24) being located between the first connecting plate (22) and the second connecting plate (23), the separation plate (24), the first connecting plate (22) and the second connecting plate (23) forming a separation channel (21), the separation channel (21) being in communication with the air intake pipe (12), and the separation channel (21) being in communication with the separation chamber (11); an oil drain hole (2422) being provided on the second connecting plate (23), the oil drain hole (2422) being in communication with the separation channel (21) and the separation chamber (11).

3. The oil separator according to claim 2, characterized in that The separation plate (24) is spirally extended so that the separation plate (24) has an inner baffle (241) and an outer baffle (242) located on a side of the inner baffle (241) away from the intake pipe (12), and the separation channel (21) is located between the inner baffle (241) and the outer baffle (242).

4. The oil separator according to claim 3, characterized in that In a direction away from the air inlet pipe (12), the distance between the inner baffle (241) and the outer baffle (242) gradually increases.

5. The oil separator according to claim 3, characterized in that An oil baffle (2421) is provided on the outer baffle (242), and the oil baffle (2421) is provided protruding from the surface of the outer baffle (242) so as to block the fluid in the separation channel (21) through the oil baffle (2421); the oil drain hole (2422) is located at the oil baffle (2421), and the oil drain hole (2422) is located upstream of the oil baffle (2421).

6. The oil separator according to claim 5, characterized in that There are multiple oil baffles (2421), and the multiple oil baffles (2421) are arranged at intervals; and / or there are multiple oil drainage holes (2422), and the multiple oil drainage holes (2422) are arranged at intervals.

7. The oil separator according to claim 2, characterized in that The oil separator further comprises a collecting component (3), wherein the collecting component (3) has an oil collecting channel (31), and one end of the oil collecting channel (31) is provided with an oil outlet (32) communicating with the separation chamber (11), and the oil outlet (32) is located below the gas-liquid separation device (2).

8. The oil separator according to claim 7, characterized in that The collecting component (3) comprises: a collecting portion (30), the collecting portion (30) being connected to the second connecting plate (23), the collecting portion (30) being located below the oil drain hole (2422) to receive the oil flowing out of the oil drain hole (2422); A guide portion (33), one end of the guide portion (33) is connected to the collecting portion (30), the other end of the guide portion (33) extends toward the collecting portion (30) in a direction away from the separation channel (21), and the oil outlet (32) is provided at one end of the guide portion (33) away from the collecting portion (30).

9. The oil separator according to claim 8, characterized in that The first connecting plate (22) and the second connecting plate (23) are provided with connecting holes (25) for the air intake pipe (12) to pass through, and the collecting portion (30) is arranged around the connecting holes (25); and / or, There are at least two guide portions (33), and at least two guide portions (33) are both in communication with the collecting portion (30); The oil collection channel (31) comprises a first oil collection channel located in the collection portion (30) and a second oil collection channel located in the guide portion (33); each of the second oil collection channels is connected via the first oil collection channel.

10. The oil separator according to claim 1, characterized in that At least two air outlets are provided on the air inlet pipe (12), and the at least two air outlets (121) are arranged at intervals in the vertical direction; the separation channels (21) of at least two gas-liquid separation devices (2) are connected to the at least two air outlets in a one-to-one correspondence; and at least two gas-liquid separation devices (2) are stacked in sequence in the vertical direction.

11. The oil separator according to any one of claims 1 to 10, characterized in that The oil separator further comprises a stabilizing device (4), the stabilizing device (4) being arranged in the separation chamber (11), the stabilizing device (4) being located below the gas-liquid separation device (2), and the stabilizing device (4) comprising: Connecting shaft (41); A plurality of partitions (42), wherein the plurality of partitions (42) are arranged around the connecting shaft (41); and the plurality of partitions (42) are all connected to the connecting shaft (41); a liquid baffle (43), the liquid baffle (43) being connected to the connecting shaft (41), the liquid baffle (43) being located above the plurality of partitions (42) to block the oil at the bottom of the separation chamber (11); A floating plate (44) is connected to the plurality of partitions (42), the floating plate (44) is located between the liquid baffle (43) and the plurality of partitions (42), and the floating plate (44) floats according to the level of the oil.

12. The oil separator according to claim 11, characterized in that The stabilizing device (4) further comprises: A positioning block (45), the positioning block (45) being arranged on the inner wall of the separation tank (1); A movable ring (46) is arranged around the plurality of partitions (42), and is provided on the movable ring (46), with at least a portion of the positioning block (45) located inside the movable ring (46) to prevent the movable ring (46) from rotating and to enable the movable ring (46) to be movably arranged along the extending direction of the positioning block (45).

13. A refrigeration system comprising an oil separator, characterized in that: The oil separator is the oil separator according to any one of claims 1 to 12.

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