CN110905817A - Compressor with high lubrication reliability - Google Patents
Compressor with high lubrication reliability Download PDFInfo
- Publication number
- CN110905817A CN110905817A CN201911168728.4A CN201911168728A CN110905817A CN 110905817 A CN110905817 A CN 110905817A CN 201911168728 A CN201911168728 A CN 201911168728A CN 110905817 A CN110905817 A CN 110905817A
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- Prior art keywords
- compressor
- oil
- oil supply
- bearing
- rotor
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/02—Lubrication; Lubricant separation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/04—Heating; Cooling; Heat insulation
- F04C29/042—Heating; Cooling; Heat insulation by injecting a fluid
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
The invention provides a compressor with high lubrication reliability. The compressor comprises a shell and a pair of rotors arranged in the shell, wherein two ends of the pair of rotors are arranged on the shell through bearings, an oil supply channel is arranged in the shell, and each bearing is communicated with the oil supply channel through an oil injection structure. The compressor with high lubrication reliability provided by the invention has the advantages that the refrigeration oil is directly sprayed to the bearing by using the oil spraying structure, the cooling and lubricating requirements of the bearing are ensured, and the diameters of the throttling holes corresponding to the bearings at different positions are set to be different in size, so that the excessive refrigeration oil at the bearing is reduced as much as possible under the condition of ensuring the lubricating requirements, the useless power consumption in the compressor is reduced, the circulation quantity of the refrigeration oil in the compressor is reduced, the volumetric efficiency of the compressor is improved, and the energy efficiency of the compressor is increased.
Description
Technical Field
The invention relates to the technical field of compression equipment, in particular to a compressor with high lubrication reliability.
Background
In screw compressors, the main role of the refrigeration oil is to lubricate the bearings, the rotor and cool the bearings. However, excessive refrigerating oil occupies the suction volume of the compressor and affects the energy efficiency of the compressor; meanwhile, the excessive refrigerating oil can cause the rotor to do more useless work during rotation, and the excessive energy is consumed, so that the problem of low energy efficiency of the compressor is caused.
Disclosure of Invention
In order to solve the technical problem that the energy efficiency of the compressor is influenced by excessive refrigerant oil in a cooling structure of the compressor in the prior art, the compressor with high lubrication reliability is provided, wherein the lubrication effect of the compressor is ensured, and the lubrication reliability of the compressor is high.
The utility model provides a compressor, includes the casing with set up in rotor in the casing is right, two tip of rotor pair all through the bearing set up in on the casing, be provided with oil supply channel in the casing, and each the bearing through an oil spout structure with oil supply channel intercommunication.
The oil injection structure comprises an orifice, one end of the orifice is communicated with the oil supply channel, and the other end of the orifice is communicated with the corresponding bearing.
One end of the rotor pair forms a suction end, the other end forms a discharge end, and the diameter of the throttle hole at the suction end is smaller than that at the discharge end.
And an oil supply hole is formed in the shell and communicated with the oil supply channel.
The oil supply channel comprises an air suction oil supply channel and an air exhaust oil supply channel, one end of the air suction oil supply channel is communicated with the oil supply hole, the other end of the air suction oil supply channel is communicated with all the throttling holes at the air suction end, one end of the air exhaust oil supply channel is communicated with the oil supply hole, the other end of the air exhaust oil supply channel is communicated with all the throttling holes at the air exhaust end, and the diameter of the air suction oil supply channel is smaller than that of the air exhaust oil supply channel.
The pair of rotors includes a male rotor and a female rotor that mesh with each other, and the orifice that communicates with the bearing of the male rotor has a larger diameter than the orifice that communicates with the bearing of the female rotor.
The orifice of the male rotor communicates with the oil supply passage through the shaft diameter of the female rotor.
And an oil return hole is formed in the male rotor, one end of the oil return hole points to the bearing of the male rotor, and the other end of the oil return hole is communicated with the inside of the shell.
The casing is inside to be formed with the rotor chamber, the rotor to set up in the rotor intracavity, just the tip of oil gallery with the rotor chamber intercommunication.
The bearing comprises an outer ring, an inner ring and balls, wherein the balls are arranged between the outer ring and the inner ring, and the throttling hole points to the balls.
The compressor with high lubrication reliability provided by the invention has the advantages that the refrigeration oil is directly sprayed to the bearing by using the oil spraying structure, the cooling and lubricating requirements of the bearing are ensured, and the diameters of the throttling holes corresponding to the bearings at different positions are set to be different in size, so that the excessive refrigeration oil at the bearing is reduced as much as possible under the condition of ensuring the lubricating requirements, the useless power consumption in the compressor is reduced, the circulation quantity of the refrigeration oil in the compressor is reduced, the volumetric efficiency of the compressor is improved, and the energy efficiency of the compressor is increased.
Drawings
FIG. 1 is a schematic structural diagram of a compressor according to an embodiment of the present invention, which provides a compressor with high lubrication reliability;
in the figure:
1. a housing; 2. a bearing; 3. an orifice; 4. an oil supply passage; 41. an oil supply passage on the suction side; 42. an exhaust-side oil supply passage; 5. a male rotor; 6. a female rotor.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The compressor shown in fig. 1 comprises a shell 1 and a pair of rotors arranged in the shell 1, wherein two ends of the pair of rotors are arranged on the shell 1 through bearings 2, an oil supply channel 4 is arranged in the shell 1, each bearing 2 is communicated with the oil supply channel 4 through an oil injection structure, and the oil injection structure is used for injecting refrigeration oil to the corresponding bearing 2, so that the bearing 2 can be reliably lubricated, the problem that the cooling and lubricating effect can be ensured only when the bearing 2 is completely filled with the refrigeration oil in the prior art is solved, the resistance required to be overcome when the rotors rotate is further reduced, and the useless power consumption is reduced.
The oil injection structure comprises an orifice 3, one end of the orifice 3 is communicated with the oil supply channel 4, the other end of the orifice 3 is communicated with the corresponding bearing 2, and different throttling losses are generated by utilizing the diameter change of the orifice 3 and the diameter change of the oil supply channel 4, so that the requirements of different lubricating pressures and different freezing oil quantities at the bearings 2 at different positions are met under the condition of the same oil supply pressure.
The compressor is provided with a suction side and an exhaust side, a bearing 2 on the suction side is contacted with a low-temperature refrigerant, and the low-temperature refrigerant can generate a certain cooling effect on the bearing 2, so that the lubricating and cooling effect of the bearing 2 can be met only by lubricating the bearing 2 with a small amount of refrigerant oil, the environment temperature of the bearing 2 on the exhaust side is high, and more refrigerant oil is needed for cooling and lubricating, therefore, the rotor forms a suction end on one end on the suction side, an exhaust end on the other end on the exhaust side, and the diameter of the throttling hole 3 on the suction end is smaller than that of the throttling hole 3 on the exhaust end, so that the amount of the refrigerant oil is reasonably distributed, and the consumption of the refrigerant oil is reduced on the premise of meeting the lubricating and cooling.
And an oil supply hole is formed in the shell 1 and communicated with the oil supply channel 4.
The oil supply passage 4 includes an air suction oil supply passage 41 and an air discharge oil supply passage 42, one end of the air suction oil supply passage 41 is communicated with the oil supply hole, the other end is communicated with all the orifices 3 at the air suction end, one end of the air discharge oil supply passage 42 is communicated with the oil supply hole, the other end is communicated with all the orifices 3 at the air discharge end, the diameter of the air suction oil supply passage 41 is smaller than that of the air discharge oil supply passage 42, the distribution amount of the refrigerant oil is limited by the difference of the diameters due to the difference of the amounts of the refrigerant oil required by the air suction end and the air discharge end, and therefore, the usage amount of the refrigerant oil is reduced as much as possible on the premise of ensuring cooling and lubrication.
The rotor pair comprises a male rotor 5 and a female rotor 6 which are meshed with each other, the diameter of the throttle hole 3 communicated with the bearing 2 of the male rotor 5 is larger than that of the throttle hole 3 communicated with the bearing 2 of the female rotor 6, and effective cooling and lubrication of the bearing 2 of the male rotor 5 are ensured.
The orifice 3 of the male rotor 5 is communicated with the oil supply channel 4 through the shaft diameter of the female rotor 6, the lubricating oil is divided at the female rotor, part of the lubricating oil directly enters the bearing of the female rotor through the orifice of the female rotor, the rest of the lubricating oil flows into the orifice of the male rotor after passing through the shaft diameter of the female rotor, and the diameter of the orifice 3 of the female rotor 6 needs to be smaller than that of the orifice 3 of the male rotor 5 because the lubricating oil firstly passes through the female rotor 6.
The male rotor 5 department is provided with the oil gallery, the one end of oil gallery is directional male rotor 5 bearing 2, the other end with 1 inside intercommunication of casing makes the refrigeration oil of accomplishing the cooling and lubrication purpose flow back to casing 1 inside to accomplish the refrigeration oil circulation, avoid the refrigeration oil to flow to the compressor induction port and can't all get back to in the exhaust side oil groove.
A rotor cavity is formed in the shell 1, the rotor pair is arranged in the rotor cavity, and the end of the oil return hole is communicated with the rotor cavity.
The bearing 2 comprises an outer ring, an inner ring and balls, the balls are arranged between the outer ring and the inner ring, and the throttling holes 3 point to the balls, so that the refrigeration oil is directly sprayed to the balls for cooling and lubricating, and the refrigeration and lubrication effects of the refrigeration oil are improved.
Examples
The diameter range of the throttling hole corresponding to the suction end female rotor bearing is 0.5-1 mm;
the diameter range of the throttling hole corresponding to the air suction end male rotor bearing is 1.0-1.5 mm;
the diameter range of the throttling hole corresponding to the exhaust end female rotor bearing is 2.0-2.5 mm;
the diameter range of the throttling hole corresponding to the exhaust end male rotor bearing is 2.5-3.0 mm.
It can be seen that the diameter of the orifice corresponding to the female rotor bearing at the suction end is smaller than the diameter of the orifice corresponding to the male rotor bearing at the suction end, and the diameter of the orifice corresponding to the male rotor or the female rotor bearing at the suction end is smaller than the diameter of the orifice corresponding to the male rotor or the female rotor bearing at the discharge end.
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 present 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 (10)
1. A compressor, characterized by: the oil supply device comprises a shell (1) and a pair of rotors arranged in the shell (1), wherein two ends of the pair of rotors are arranged on the shell (1) through bearings (2), an oil supply channel (4) is arranged in the shell (1), and each bearing (2) is communicated with the oil supply channel (4) through an oil injection structure.
2. The compressor of claim 1, wherein: the oil injection structure comprises an orifice (3), one end of the orifice (3) is communicated with the oil supply channel (4), and the other end of the orifice is communicated with the corresponding bearing (2).
3. The compressor of claim 2, wherein: one end of the rotor pair forms a suction end, the other end forms a discharge end, and the diameter of the throttle hole (3) at the suction end is smaller than that of the throttle hole (3) at the discharge end.
4. A compressor according to claim 3, wherein: and an oil supply hole is formed in the shell (1), and the oil supply hole is communicated with the oil supply channel (4).
5. The compressor of claim 4, wherein: oil supply channel (4) including breathing in oil supply channel (41) and exhaust oil supply channel (42), the one end of breathing in oil supply channel (41) with supply oil hole intercommunication, the other end with be in the end of breathing in all orifice (3) intercommunication, the one end of exhaust oil supply channel (42) with supply oil hole intercommunication, the other end with the end of exhausting all orifice (3) intercommunication, just the diameter of breathing in oil supply channel (41) is less than the diameter of exhaust oil supply channel (42).
6. The compressor of claim 2, wherein: the rotor pair comprises a male rotor (5) and a female rotor (6) which are meshed with each other, and the diameter of the throttle hole (3) communicated with the bearing (2) of the male rotor (5) is larger than the diameter of the throttle hole (3) communicated with the bearing (2) of the female rotor (6).
7. The compressor of claim 6, wherein: the orifice (3) of the male rotor (5) communicates with the oil supply passage (4) through the axial diameter of the female rotor (6).
8. The compressor of claim 6, wherein: an oil return hole is formed in the male rotor (5), one end of the oil return hole points to the bearing (2) of the male rotor (5), and the other end of the oil return hole is communicated with the interior of the shell (1).
9. The compressor of claim 8, wherein: the casing (1) is inside to be formed with the rotor chamber, the rotor pair set up in the rotor chamber, just the tip of oil gallery with the rotor chamber intercommunication.
10. The compressor of claim 2, wherein: the bearing (2) comprises an outer ring, an inner ring and balls, wherein the balls are arranged between the outer ring and the inner ring, and the throttle hole (3) points to the balls.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911168728.4A CN110905817A (en) | 2019-11-25 | 2019-11-25 | Compressor with high lubrication reliability |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911168728.4A CN110905817A (en) | 2019-11-25 | 2019-11-25 | Compressor with high lubrication reliability |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110905817A true CN110905817A (en) | 2020-03-24 |
Family
ID=69819391
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911168728.4A Pending CN110905817A (en) | 2019-11-25 | 2019-11-25 | Compressor with high lubrication reliability |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110905817A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112431764A (en) * | 2020-12-02 | 2021-03-02 | 珠海格力电器股份有限公司 | Compressor structure and air conditioner that lubricated effect is good |
| WO2022087922A1 (en) * | 2020-10-28 | 2022-05-05 | 瑞立集团瑞安汽车零部件有限公司 | Positive-displacement air compressor |
| CN114589023A (en) * | 2022-05-10 | 2022-06-07 | 山东畜牧兽医职业学院 | High-performance injection device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5879685A (en) * | 1981-11-06 | 1983-05-13 | Ebara Corp | Screw compressor |
| US4439121A (en) * | 1982-03-02 | 1984-03-27 | Dunham-Bush, Inc. | Self-cleaning single loop mist type lubrication system for screw compressors |
| CN102878079A (en) * | 2012-10-16 | 2013-01-16 | 杭州久益机械有限公司 | Low pressure oil injected screw compressor |
| CN105201857A (en) * | 2015-10-29 | 2015-12-30 | 无锡压缩机股份有限公司 | Oil jet screw air compressor exhaust end oil return structure |
| CN204961301U (en) * | 2015-09-02 | 2016-01-13 | 温岭市鑫磊空压机有限公司 | Second grade air compressor's lubricating system |
| CN205225746U (en) * | 2015-10-29 | 2016-05-11 | 无锡压缩机股份有限公司 | Oil -injected screw compressor end oil return structure |
-
2019
- 2019-11-25 CN CN201911168728.4A patent/CN110905817A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5879685A (en) * | 1981-11-06 | 1983-05-13 | Ebara Corp | Screw compressor |
| US4439121A (en) * | 1982-03-02 | 1984-03-27 | Dunham-Bush, Inc. | Self-cleaning single loop mist type lubrication system for screw compressors |
| CN102878079A (en) * | 2012-10-16 | 2013-01-16 | 杭州久益机械有限公司 | Low pressure oil injected screw compressor |
| CN204961301U (en) * | 2015-09-02 | 2016-01-13 | 温岭市鑫磊空压机有限公司 | Second grade air compressor's lubricating system |
| CN105201857A (en) * | 2015-10-29 | 2015-12-30 | 无锡压缩机股份有限公司 | Oil jet screw air compressor exhaust end oil return structure |
| CN205225746U (en) * | 2015-10-29 | 2016-05-11 | 无锡压缩机股份有限公司 | Oil -injected screw compressor end oil return structure |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022087922A1 (en) * | 2020-10-28 | 2022-05-05 | 瑞立集团瑞安汽车零部件有限公司 | Positive-displacement air compressor |
| CN112431764A (en) * | 2020-12-02 | 2021-03-02 | 珠海格力电器股份有限公司 | Compressor structure and air conditioner that lubricated effect is good |
| CN114589023A (en) * | 2022-05-10 | 2022-06-07 | 山东畜牧兽医职业学院 | High-performance injection device |
| CN114589023B (en) * | 2022-05-10 | 2022-07-12 | 山东畜牧兽医职业学院 | High-performance injection device |
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Application publication date: 20200324 |
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