Oil separator
The oil separator with a horizontal cylinder structure and multi-stage separation design solves the problems of high noise, poor effect and high cost of existing oil separators, realizes efficient separation of lubricating oil and refrigerant, and improves refrigeration effect and energy utilization.
Patent Information
- Application Number
- CN202422091249.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-28
- Publication Date
- 2025-09-26
- Estimated Expiration
- 2034-08-28
AI Technical Summary
Existing vertical and horizontal oil separators in central air-conditioning systems have problems such as high noise, poor effect, high material cost and large space occupation. They cannot effectively separate lubricating oil and refrigerant, affecting cooling effect and energy consumption.
It adopts a horizontally arranged cylinder structure, combined with the design of air intake pipe, air balancing plate, filter assembly and oil storage cylinder, to achieve efficient separation of lubricating oil through a multi-stage separation process, including the first stage of oil droplet attachment, the second stage of vortex separation and the third stage of filtration separation, and uses magnets to absorb iron chips and residue.
It achieves efficient separation of lubricating oil and refrigerant, reduces noise, reduces material costs, saves space, and improves refrigeration efficiency and energy utilization.
Smart Images
Figure CN223388786U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of water-cooled chillers, and in particular to an oil separator. Background Art
[0002] Central air conditioning systems are widely used in modern buildings, regulating indoor temperatures through the circulation of refrigerant. However, during operation, the refrigerant carries a certain amount of lubricating oil with it in components such as the compressor, condenser, and evaporator. While the presence of lubricating oil is crucial for the proper operation of the compressor, failure to effectively separate it can negatively impact the entire air conditioning system.
[0003] In air conditioning systems, the primary function of lubricating oil is to reduce friction within the compressor and extend the life of the equipment. However, when the lubricating oil cannot separate and flows with the refrigerant to the condenser and evaporator, it may adhere to the heat exchange surfaces of the condenser and evaporator, forming an oil film. This reduces heat exchange efficiency, thereby reducing cooling effectiveness, increasing compressor load, and ultimately increasing energy consumption.
[0004] Currently, the main types of oil separators on the market are vertical and horizontal. Vertical oil separators typically introduce a mixture of oil and refrigerant at high speed from a tangential direction into the cylinder, relying on centrifugal force to separate large oil droplets from the refrigerant. This results in high noise and poor performance. Horizontal oil separators typically utilize a large space to reduce the flow rate of the mixed gas and filter the oil droplets through a filter. This results in high material costs and a large footprint. Utility Model Content
[0005] In order to improve the above problems, the present application provides an oil separator.
[0006] The oil separator provided in this application adopts the following technical solution:
[0007] An oil separator comprises a horizontally arranged cylinder and a head for sealing both ends of the cylinder, an air inlet pipe and an air outlet pipe are provided on the cylinder, a filter assembly for filtering mixed gas is provided between the air inlet pipe and the air outlet pipe, the filter assembly is arranged in the cylinder, an oil storage cylinder is connected to the bottom of the cylinder, and an oil drain assembly is provided on the oil storage cylinder.
[0008] Furthermore, one end of the air inlet pipe extends into the cylinder with its port facing the center of the left end of the head, and the other end of the air inlet pipe extends out of the cylinder with its axis perpendicular to the axis of the cylinder.
[0009] Furthermore, an air distribution plate connected to the inner wall of the cylinder is provided between the air inlet pipe and the filter assembly, and a plurality of air holes are provided on the air distribution plate.
[0010] Furthermore, a first gap for liquid oil to pass through is provided between the air equalizing plate and the bottom of the cylinder.
[0011] Furthermore, the filter assembly includes a filter drum and a filter screen disposed in the filter drum. Both ends of the filter drum are provided with fixing plates, and the fixing plates are fixedly connected to the cylinder.
[0012] Furthermore, a second gap is provided between the fixing plate and the bottom of the cylinder for liquid oil to pass through.
[0013] Furthermore, an oil baffle plate is provided in the cylinder body, the oil storage cylinder is arranged between the fixed plate facing away from the air equalizing plate and the oil baffle plate, a partition plate is provided on the top wall of the oil baffle plate, and the partition plate and the oil baffle plate enclose a limiting space to limit the liquid oil.
[0014] Furthermore, the oil baffle is provided with a through hole.
[0015] Furthermore, the oil storage cylinder is provided with an oil drain assembly, which includes an oil supply pipe and an oil unloading valve provided on the peripheral wall of the oil storage cylinder, and a sealing plate is provided on the bottom of the oil storage cylinder.
[0016] Furthermore, a magnet is provided on the top of the sealing plate.
[0017] In summary, this application includes at least one of the following beneficial technical effects:
[0018] 1. The oil and refrigerant mixed gas collides with the inner wall of the head at high speed from the air inlet pipe. After the gas collides, it is reflected into the cylinder and dispersed into the large space of the cylinder along the inner wall of the head. The air flow speed is reduced, and large particles of oil droplets will adhere to the inner wall of the head. After accumulating into oil droplets, they fall to the bottom of the cylinder under the action of gravity, realizing the first level of oil separation;
[0019] 2. After impacting the head, the mixed gas has different flow velocities along the cylinder. The flow velocity at the center of the cylinder is low, while the flow velocity at the inner wall of the cylinder is high, which will generate vortices to varying degrees. The gas equalization plate is used to equalize the mixed gas according to the different gas flow rates. At the same time, the porous design of the gas equalization plate increases the contact area between the mixed gas and the gas equalization plate. Oil droplets are adsorbed on the gas equalization plate and then drip to the bottom of the cylinder, achieving the second level of oil separation.
[0020] 3. The filter screen, filter drum and fixed plate are installed behind the air equalizing plate. The mixed gas that has passed through the air equalizing plate passes through the filter assembly at a uniform flow rate and fully contacts the filter screen, effectively filtering out oil mist and oil droplets, thus achieving the third level of oil separation.
[0021] 4. The design of the oil baffle can prevent the oil from hitting the right head with the air flow, and prevent the oil droplets from splashing and being sucked away by the outlet pipe;
[0022] 5. The magnet is installed at the bottom of the oil storage cylinder to absorb iron filings and residues contained in the oil, which is beneficial to improving the cleanliness of the oil supply. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] Figure 1 This is a schematic diagram of the overall structure of an oil separator in an embodiment of the present application.
[0024] Figure 2 for Figure 1 Sectional view of the AA plane.
[0025] Explanation of the accompanying symbols: 1. Cylinder; 2. Head; 3. Air inlet pipe; 4. Air outlet pipe; 5. Filter assembly; 51. Filter reel; 52. Filter screen; 6. Oil drain assembly; 61. Oil supply pipe; 62. Oil unloading valve; 7. Second gap; 8. Sealing plate; 9. Oil storage cylinder; 10. Air equalizing plate; 11. Air hole; 12. First gap; 13. Oil baffle plate; 14. Partition plate; 15. Limit space; 16. Fixed plate; 17. Magnet; 18. Through hole. DETAILED DESCRIPTION
[0026] The following is combined with Figure 1-2 This application is described in further detail.
[0027] The embodiment of the present application discloses an oil separator.
[0028] Reference Figure 1 and Figure 2 An oil separator includes a horizontally arranged cylinder 1 and a head 2 for sealing both ends of the cylinder 1, an air inlet pipe 3 and an air outlet pipe 4 are provided on the cylinder 1, a filter assembly 5 for filtering the mixed gas is provided between the air inlet pipe 3 and the air outlet pipe 4, an oil storage cylinder 9 is connected to the bottom of the cylinder 1, and an oil discharge assembly 6 is provided on the oil storage cylinder 9.
[0029] In this embodiment, the air inlet pipe 3 is "L"-shaped, one end of the air inlet pipe 3 extends into the cylinder 1 and faces the center of the left head 2, the other end of the air inlet pipe 3 extends out of the cylinder 1 and the axis is perpendicular to the axis of the cylinder 1, one end of the air outlet pipe 4 extends into the cylinder 1, and the other end of the air outlet pipe 4 extends out of the cylinder 1.
[0030] The oil and refrigerant mixed gas collides with the inner wall of the head 2 at high speed from the air inlet pipe 3. After the collision, the gas is reflected into the cylinder 1 and dispersed into the large space of the cylinder 1 along the inner wall of the head 2. The air flow speed is reduced, and large particles of oil droplets will adhere to the inner wall of the head 2. After accumulating into oil droplets, they flow to the bottom of the cylinder 1 under the action of gravity, realizing the first level of oil separation.
[0031] Reference Figure 2An air equalizing plate 10 is provided between the air inlet pipe 3 and the filter assembly 5. The air equalizing plate 10 is connected to the inner wall of the cylinder 1. A plurality of air holes 11 are provided on the air equalizing plate 10. In this embodiment, the plurality of air holes 11 can be square holes, round holes and special-shaped holes. A first gap 12 for liquid oil to pass through is provided between the air equalizing plate 10 and the bottom of the cylinder 1.
[0032] The mixed gas after impacting the left head 2 has different flow velocities in the direction of the cylinder 1. The flow velocity in the center of the cylinder 1 is low, and the flow velocity on the inner wall of the cylinder 1 is high, which will generate vortices to varying degrees. According to different gas flow rates, the gas equalizing plate 10 is used to equalize the mixed gas; at the same time, the multi-pore 11 design of the gas equalizing plate 10 increases the contact area between the mixed gas and the gas equalizing plate 10. The oil droplets are adsorbed on the gas equalizing plate 10, then drip to the bottom of the cylinder 1, and gather in the first gap 12, realizing the second level of oil separation.
[0033] Reference Figure 2 The filter assembly 5 includes a filter drum 51 and a filter screen 52 arranged in the filter drum 51. Fixed plates 16 are provided at both ends of the filter drum 51. The fixed plates 16 are fixedly connected to the cylinder 1. A second gap 7 for liquid oil to pass through is provided between the fixed plate 16 and the bottom of the cylinder 1. The diameter of the filter drum 51 is the same as the internal diameter of the cylinder 1, and the filter screen 52 is filled inside the filter drum 51.
[0034] The filter screen 52, filter drum 51 and fixed plate 16 are installed behind the air equalizing plate 10. The mixed gas that passes through the air equalizing plate 10 passes through the filter assembly 5 at a uniform flow rate and fully contacts the filter screen 52, effectively filtering the oil mist and oil droplets. The oil mist and oil droplets gather in the second gap 7, realizing the third level of oil separation.
[0035] Reference Figure 2 An oil baffle plate 13 is provided in the cylinder 1, and the oil storage cylinder 9 is arranged between the fixed plate 16 away from the air equalizing plate 10 and the oil baffle plate 13. A partition plate 14 is provided on the top wall of the oil baffle plate 13. The partition plate 14 and the oil baffle plate 13 enclose a limiting space 15 for limiting the liquid oil. A through hole 18 is provided on the oil baffle plate 13. The design of the oil baffle plate 13 can prevent the oil from hitting the right head 2 with the air flow, prevent oil droplets from splashing and being sucked away by the outlet pipe 4, and use the through hole 18 to slow down the surge of liquid oil.
[0036] Reference Figure 1 and Figure 2 The oil discharge assembly 6 includes an oil supply pipe 61 and an oil unloading valve 62 arranged on the peripheral wall of the oil storage cylinder 9. A sealing plate 8 is provided at the bottom of the oil storage cylinder 9, and a magnet 17 is provided on the top of the sealing plate 8.
[0037] The liquid oil is collected by converging the liquid oil in the first gap 12, the second gap 7 and the limit space 15 into the oil storage cylinder 9. The magnet 17 is installed at the bottom of the oil storage cylinder 9 to absorb the iron filings and residue contained in the oil, which is beneficial to improving the cleanliness of the discharged liquid oil.
[0038] The implementation principle of an oil separator in the embodiment of the present application is as follows: the oil and refrigerant mixed gas collides with the inner wall of the head 2 at high speed from the air inlet pipe 3, and the gas is reflected into the cylinder 1 after the collision, and is dispersed into the large space of the cylinder 1 along the inner wall of the head 2, and the air flow speed is reduced. Large particles of oil droplets will adhere to the inner wall of the head 2, and after accumulating into oil droplets, they will flow to the bottom of the cylinder 1 under the action of gravity, realizing the first level of oil separation; the mixed gas after impacting the left head 2 has different flow velocities in the direction of the cylinder 1, the flow velocity at the center of the cylinder 1 is low, and the flow velocity at the inner wall of the cylinder 1 is high, which will generate vortices to varying degrees. According to different gas flow rates, the gas equalizing plate 10 is used to equalize the mixed gas; at the same time, the multiple pores of the gas equalizing plate 10 The design 11 increases the contact area between the mixed gas and the gas equalizing plate 10. The oil droplets are adsorbed on the gas equalizing plate 10, then drip to the bottom of the cylinder 1, and gather in the first gap 12, realizing the second level of oil separation; the filter screen 52, the filter roll 51 and the fixed plate 16 are installed behind the gas equalizing plate 10. The mixed gas that passes through the gas equalizing plate 10 passes through the filter assembly 5 at a uniform flow rate and fully contacts the filter screen 52, effectively filtering the oil mist and oil droplets. The oil mist and oil droplets gather in the second gap 7, realizing the third level of oil separation; finally, the oil storage cylinder 9, the oil supply pipe 61 and the oil unloading valve 62 are used to collect and discharge the liquid oil, which is conducive to achieving a good separation effect of gas and liquid oil.
[0039] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.
Claims
1. An oil separator, characterized in that: The invention comprises a horizontally arranged cylinder (1) and a sealing head (2) for sealing both ends of the cylinder (1); an air inlet pipe (3) and an air outlet pipe (4) are arranged on the cylinder (1); a filter assembly (5) for filtering mixed gas is arranged between the air inlet pipe (3) and the air outlet pipe (4); the filter assembly (5) is arranged in the cylinder (1); and an oil storage cylinder (9) is arranged at the bottom of the cylinder (1); An air distribution plate (10) connected to the inner wall of the cylinder (1) is provided between the air inlet pipe (3) and the filter assembly (5), and a plurality of air holes (11) are provided on the air distribution plate (10); The gas equalizing plate (10) and the bottom of the cylinder (1) are provided with a first gap (12) for liquid oil to pass through.
2. An oil separator according to claim 1, characterized in that: One end of the air inlet pipe (3) extends into the cylinder (1) with its port facing the center of the circle of the left end cap (2); the other end of the air inlet pipe (3) extends out of the cylinder (1) with its axis perpendicular to the axis of the cylinder (1).
3. The oil separator according to claim 1, characterized in that: The filter assembly (5) comprises a filter drum (51) and a filter screen (52) arranged in the filter drum (51), and both ends of the filter drum (51) are provided with a fixing plate (16), and the fixing plate (16) and the cylinder (1) are fixedly connected.
4. An oil separator according to claim 3, characterized in that: A second gap (7) for liquid oil to pass through is provided between the fixing plate (16) and the bottom of the cylinder (1).
5. The oil separator according to claim 3, characterized in that: An oil baffle plate (13) is provided in the cylinder (1), the oil storage cylinder (9) is provided between the fixed plate (16) facing away from the gas equalizing plate (10) and the oil baffle plate (13), a partition plate (14) is provided on the top wall of the oil baffle plate (13), and the partition plate (14) and the oil baffle plate (13) enclose a limiting space (15) for limiting the position of the liquid oil.
6. The oil separator according to claim 5, characterized in that: The oil baffle plate (13) is provided with a through hole (18).
7. The oil separator according to claim 1, characterized in that: The oil storage cylinder (9) is provided with an oil discharge assembly (6), the oil discharge assembly (6) comprising an oil supply pipe (61) and an oil discharge valve (62) provided on the peripheral wall of the oil storage cylinder (9), and a sealing plate (8) is provided at the bottom of the oil storage cylinder (9).
8. The oil separator according to claim 7, characterized in that: A magnet (17) is provided on the top of the sealing plate (8).