CN111237192B - Oil circuit structure of internal bearing of lubrication screw compressor - Google Patents
Oil circuit structure of internal bearing of lubrication screw compressor Download PDFInfo
- Publication number
- CN111237192B CN111237192B CN202010200883.6A CN202010200883A CN111237192B CN 111237192 B CN111237192 B CN 111237192B CN 202010200883 A CN202010200883 A CN 202010200883A CN 111237192 B CN111237192 B CN 111237192B
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- China
- Prior art keywords
- oil
- screw compressor
- bearing
- male
- female rotors
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 238000005461 lubrication Methods 0.000 title description 13
- 230000001050 lubricating effect Effects 0.000 claims abstract description 10
- 238000002347 injection Methods 0.000 claims description 11
- 239000007924 injection Substances 0.000 claims description 11
- 238000009434 installation Methods 0.000 claims description 6
- 239000003921 oil Substances 0.000 description 182
- 230000009471 action Effects 0.000 description 8
- 230000000694 effects Effects 0.000 description 5
- 239000010687 lubricating oil Substances 0.000 description 5
- 239000000446 fuel Substances 0.000 description 4
- 239000003595 mist Substances 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000010724 circulating oil Substances 0.000 description 2
- 125000004122 cyclic group Chemical group 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000002776 aggregation Effects 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
Classifications
-
- 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
-
- 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
-
- 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
- F04C2240/00—Components
- F04C2240/50—Bearings
Abstract
The invention relates to an oil circuit structure for lubricating bearings in a screw compressor, wherein a pair of male and female rotors and an internal bearing group are arranged in the screw compressor, an oil circuit channel is also arranged in the screw compressor, one end of the oil circuit channel is communicated with the outside to form a high-pressure area, and the other end of the oil circuit channel is used for placing bearing positions of bearing pieces to oil return positions of the male and female rotors and forming a low-pressure area at the oil return positions of the male and female rotors.
Description
Technical Field
The invention relates to the technical field of refrigeration mechanical equipment, in particular to an oil circuit structure for lubricating an internal bearing of a screw compressor.
Background
The bearings of the screw compressor are usually fed by means of pressure difference of suction and exhaust gas or forced fed by an external oil pump and fed to the lubrication points of the bearings through an external or internal circulating oil way. No matter what oil supply mode and circulating oil way are adopted, enough oil flow is required to be ensured to lubricate and cool the bearing, and the problems of complex structure, low efficiency, high cost, poor lubrication effect, additional increase of power consumption of the compressor and the like of a general compressor lubrication system are caused by the limitation of the space and the structure of the compressor and the design limitation.
Disclosure of Invention
The technical problems to be solved by the invention are as follows: an oil path structure for lubricating an inner bearing of a screw compressor is provided.
In order to solve the technical problems, the invention adopts the following technical scheme:
the utility model provides an oil circuit structure of inside bearing of lubricated screw compressor, the inside pair of negative and positive rotor and the inside bearing group of being provided with of screw compressor, inside bearing group includes the bearing spare more than two, and the bearing spare more than two sets up respectively at negative and positive rotor both ends so that negative and positive rotor is assembled inside the screw compressor, the inside oil circuit passageway that still is provided with of screw compressor, the one end and the external intercommunication of oil circuit passageway form the high-pressure region, the other end route of oil circuit passageway is used for placing behind the bearing position of bearing spare extremely the oil return department of negative and positive rotor just is in the oil return department of negative and positive rotor forms the low-pressure region.
The invention has the beneficial effects that: through forming corresponding high-pressure area and low-pressure area in the compressor inside, cyclic utilization oil lubricates the internal bearing of compressor under the effect of pressure differential, does not receive screw compressor's mechanism and space's restriction, can be long-term stable effectual lubrication and the cooling of guaranteeing the bearing for internal bearing provides sufficient oil flow, and then avoided the card of compressor dead trouble because of the compressor bearing damages.
Drawings
Fig. 1 is a schematic structural view of an oil path structure for lubricating an inner bearing of a screw compressor according to an embodiment of the present invention;
description of the reference numerals:
1. a male rotor; 2. a female rotor;
31. an oil path first channel; 32. an oil path second channel; 33. a third passage of the oil path; 34. a fourth passage of the oil path;
41. a first oil storage chamber; 42. a second oil storage chamber; 43. a third oil storage chamber; 44. a fourth oil storage chamber;
51. a first oil spray point; 52. a second oil spray point;
6. an oil filling port; 7. an oil return position;
81. a first oil jet pan; 82. a second oil jet pan; 83. a third oil jet pan; 84. a fourth oil jet pan;
91. a first oil slinger; 92. a second oil slinger;
10. a long nozzle;
111. a first oil-resistant ring; 112. a second oil-resistant ring; 113. a third oil-resistant ring; 114. and a fourth oil-resistant ring.
Detailed Description
In order to describe the technical contents, the achieved objects and effects of the present invention in detail, the following description will be made with reference to the embodiments in conjunction with the accompanying drawings.
Referring to fig. 1, the technical scheme provided by the invention is as follows:
the utility model provides an oil circuit structure of inside bearing of lubricated screw compressor, the inside pair of negative and positive rotor and the inside bearing group of being provided with of screw compressor, inside bearing group includes the bearing spare more than two, and the bearing spare more than two sets up respectively at negative and positive rotor both ends so that negative and positive rotor is assembled inside the screw compressor, the inside oil circuit passageway that still is provided with of screw compressor, the one end and the external intercommunication of oil circuit passageway form the high-pressure region, the other end route of oil circuit passageway is used for placing behind the bearing position of bearing spare extremely the oil return department of negative and positive rotor just is in the oil return department of negative and positive rotor forms the low-pressure region.
From the above description, the beneficial effects of the invention are as follows:
through forming corresponding high-pressure area and low-pressure area in the compressor inside, cyclic utilization oil lubricates the internal bearing of compressor under the effect of pressure differential, does not receive screw compressor's mechanism and space's restriction, can be long-term stable effectual lubrication and the cooling of guaranteeing the bearing for internal bearing provides sufficient oil flow, and then avoided the card of compressor dead trouble because of the compressor bearing damages.
Further, an oil storage cavity is further formed in the screw compressor, two oil storage cavities are respectively located at two ends of the male rotor and the female rotor, the oil storage cavities are communicated with the oil way channel, and the level of the oil storage cavities is lower than that of the oil return position.
As is apparent from the above description, the oil storage chamber is provided to store oil, and when the oil is collected in the oil storage chamber and filled to the height of the oil passage of the oil storage chamber, the oil flows to the oil return position under the action of pressure difference.
Furthermore, part of bearing parts in the screw compressor are connected in series to form a bearing assembly, and an oil thrower disc is arranged on an oil path in the screw compressor corresponding to the position of the bearing assembly.
From the above description, it will be appreciated that the oil slinger may act as an oil slinger and a spacer bearing so that the sprays formed at the two ends do not interfere with each other and pool together under the action of the oil slinger.
Further, a long nozzle is arranged on an oil path channel in the screw compressor, the long nozzle is communicated with the oil path channel, and an injection port of the long nozzle is arranged towards the oil slinger.
From the above description, it is known to provide long nozzles for direct forced lubrication of the bearings outside the oil slinger.
Furthermore, the installation department of negative and positive rotor and inside bearing group is equipped with the oil spout dish, be equipped with a plurality of evenly distributed's fuel sprayer on the oil spout dish, the fuel sprayer sets up towards inside bearing group.
As is apparent from the above description, a plurality of oil nozzles are provided, and oil holes of the oil nozzles are provided so as to facilitate oil mist lubrication.
Furthermore, an oil-resisting ring is arranged at the installation position of the male rotor and the female rotor and the internal bearing group, and the oil-resisting ring is positioned between the male rotor and the female rotor and the oil nozzle.
As is apparent from the above description, the provision of the oil-blocking ring can block the oil mist in the oil reservoir from moving to the rotor side of the compressor.
Further, the male and female rotors are horizontally arranged inside the screw compressor, and oil return positions of the male and female rotors are located on the upper portion of the screw compressor and correspond to the middle positions of the male and female rotors in the vertical direction.
From the above description, it is known that when oil is compressed and discharged by the compressor together with the compression medium, the oil is cooled, lubricated, sealed and noise reduced again in this process.
Referring to fig. 1, a first embodiment of the present invention is as follows:
an oil way structure for lubricating an internal bearing of a screw compressor is characterized in that a pair of male and female rotors and an internal bearing group are arranged in the screw compressor, the male and female rotors comprise female rotors 2 and male rotors 1 which are meshed with each other, the internal bearing group comprises more than two bearing pieces, the more than two bearing pieces are respectively arranged at two ends of the male and female rotors so that the male and female rotors are assembled in the screw compressor, an oil way channel is further arranged in the screw compressor, one end of the oil way channel is communicated with the outside to form a high-pressure area, and the other end of the oil way channel is used for placing a bearing position of the bearing piece and then reaches an oil return position 7 of the male and female rotors and the oil return position 7 of the male and female rotors forms a low-pressure area.
The oil passage is communicated with the outside through an oil filling port 6.
Four oil storage cavities are further formed in the screw compressor, a first oil storage cavity 41 and a third oil storage cavity 43 are formed in two ends of the male rotor respectively, a second oil storage cavity 42 and a fourth oil storage cavity 44 are formed in two ends of the female rotor respectively, an oil passage is formed between every two oil storage cavities, the first oil storage cavity 41 and the second oil storage cavity 42 are connected through the first oil passage 31, the third oil storage cavity 43 and the fourth oil storage cavity 44 are connected through the second oil passage 32, the second oil storage cavity 42 is connected to the oil return position 7 through the third oil passage 33, the fourth oil storage cavity 44 is connected to the oil return position 7 through the fourth oil passage 34, and the level of the oil storage cavities is lower than that of the oil return position 7.
In this embodiment, the oil path is disposed in a middle position relative to the oil storage chamber, and serves to balance the pressure of the oil storage chamber of the male and female rotors, the oil passing path, and limit the oil level.
The installation place of the male and female rotors and the single bearing is provided with an oil spraying point, and the oil spraying point is provided with a plurality of oil spraying nozzles with different calibers.
In the present embodiment, the first oil ejection point 51 and the second oil ejection point 52 are provided at bearing positions of a single bearing at one end of the male rotor 1 and the female rotor 2, respectively.
The screw compressor is characterized in that part of bearing parts in the screw compressor are connected in series to form a bearing assembly, an oil thrower disc is arranged on an oil path channel in the screw compressor and corresponds to the position of the bearing assembly, the oil thrower disc comprises an inner disc and an outer disc, the thickness of the inner disc and the thickness of the outer disc are completely consistent, and the oil thrower disc is arranged between a long string of ball bearings and the bearings.
In the present embodiment, a first oil thrower 91 and a second oil thrower 92 are provided at the bearing positions of the bearings connected in series at one end of the male rotor.
The long nozzle 10 is arranged on an oil path channel in the screw compressor, and a jet orifice of the long nozzle 10 is arranged towards the position of the first oil slinger 91.
In this embodiment, the long nozzle is provided outside the male rotor 1 angular contact ball bearing.
The installation department of negative and positive rotor and inside bearing group is equipped with the oil spout dish, be equipped with a plurality of evenly distributed's fuel sprayer on the oil spout dish, the fuel sprayer sets up towards inside bearing group.
In this embodiment, four oil-jet pans are provided at the bearing positions of the bearings connected in series at one end of the male and female rotors, respectively, the first oil-jet pan 81, the second oil-jet pan 82, the third oil-jet pan 83, and the fourth oil-jet pan 84.
And an oil-resisting ring is arranged at the installation position of the male and female rotors and the internal bearing group, and the oil-resisting ring is positioned between the male and female rotors and the oil nozzle.
In the present embodiment, four oil-resistant rings, namely, a first oil-resistant ring 111, a second oil-resistant ring 112, a third oil-resistant ring 113 and a fourth oil-resistant ring 114, are provided at the bearing position of the bearing in series at one end of the male and female banker.
The male and female rotors are horizontally arranged inside the screw compressor, and the oil return position 7 of the male and female rotors is positioned at the upper part of the screw compressor and corresponds to the middle position of the male and female rotors in the vertical direction.
Referring to fig. 1, the working principle of the present embodiment is as follows:
external lubricating oil enters the inside of the compressor through an oil injection port on the compressor, and then is divided into two paths through an oil path channel, one path of the lubricating oil reaches a bearing position on the left side (an air inlet end) of the compressor on the figure, oil mist is formed to lubricate and cool the bearing under the action of an oil injection nozzle on an oil injection point, and the lubricating oil is gathered in respective oil storage cavities, flows through the oil path channel after flowing through the oil path channel, and flows to the middle oil return position of the compressor under the action of pressure difference; the other path is to the bearing position on the right side (exhaust end) of the compressor in the figure, so that part of bearings are more, an oil injection disc is arranged, a plurality of oil injection nozzles are arranged on the oil injection disc to provide enough atomized oil for bearing lubrication, an oil thrower disc can be arranged on the bearing with more serial connection, one function is to arrange a long nozzle on the other side of the oil thrower disc, so that the oil injection nozzles can be arranged on two sides of the oil thrower disc, the two oil injection nozzles cannot influence each other in oil injection operation, and the other function is to accelerate aggregation of the sprayed oil mist under the action of the oil thrower disc so as to discharge oil; an oil path channel is also arranged between the oil storage cavities, when oil is gathered and overflows the oil path channel, the oil flows to an oil return point in the middle of the compressor under the action of pressure difference; the oil at the oil return position is sprayed into a rotor of the compressor, is discharged together with refrigerant gas discharged by the compressor under the action of the rotor, and enters the compressor for recycling after passing through an oil separator, an oil cooler and a filter.
In summary, according to the oil path structure for lubricating the bearing in the screw compressor, provided by the invention, the oil quantity entering the bearing cavity is controlled by arranging the oil nozzle without a caliber, so that the lubrication effect and the working efficiency of the bearing are changed, and the cost is further controlled, so that the low energy consumption of the screw compressor is achieved; by reasonably arranging the oil resistance ring, the oil thrower and the long nozzle, the lubrication condition of a plurality of bearings when being used in series can be improved; by arranging the oil passage, a proper amount of lubricating oil can be stored by arranging the oil passage at the height of the oil storage cavity, so that the compressor bearing is ensured to have enough lubricating oil in the initial operation stage; the oil is collected in the oil storage cavity, filled to the height of the oil channel of the oil storage cavity, and flows to the low-pressure area of the middle section of the compressor rotor under the action of pressure difference, so that the oil is compressed and discharged together with the compression medium of the compressor, and the oil plays roles of cooling, lubrication, sealing and noise reduction in the process of being discharged by compression.
The foregoing description is only illustrative of the present invention and is not intended to limit the scope of the invention, and all equivalent changes made by the specification and drawings of the present invention, or direct or indirect application in the relevant art, are included in the scope of the present invention.
Claims (5)
1. An oil way structure for lubricating an internal bearing of a screw compressor is characterized in that an oil way channel is further arranged in the screw compressor, one end of the oil way channel is communicated with the outside to form a high-pressure area, and the other end of the oil way channel passes through a bearing position for placing the bearing part and then reaches an oil return position of the male and female rotors and forms a low-pressure area at the oil return position of the male and female rotors;
the screw compressor is characterized in that an oil storage cavity is further formed in the screw compressor, the two oil storage cavities are respectively located at two ends of the male rotor and the female rotor, the oil storage cavities are communicated with the oil way channel, and the horizontal height of the oil storage cavities is lower than that of the oil return position;
the male and female rotors are horizontally arranged inside the screw compressor, and oil return positions of the male and female rotors are located at the upper part of the screw compressor and correspond to the middle position of the male and female rotors in the vertical direction.
2. The oil path structure for lubricating an internal bearing of a screw compressor according to claim 1, wherein part of the bearing members in the screw compressor are connected in series to form a bearing assembly, and an oil slinger is provided in an oil path passage in the screw compressor corresponding to the position of the bearing assembly.
3. The oil path structure for lubricating an inner bearing of a screw compressor according to claim 2, wherein a long nozzle is provided on an oil path passage inside the screw compressor, the inside of the long nozzle is communicated with the oil path passage, and an injection port of the long nozzle is provided toward the oil slinger position.
4. An oil circuit structure for lubricating an internal bearing of a screw compressor according to claim 1, 2 or 3, wherein an oil jet disc is provided at the installation site of the male and female rotors and the internal bearing group, a plurality of evenly distributed oil jet nozzles are provided on the oil jet disc, and the oil jet nozzles are arranged toward the internal bearing group.
5. The oil path structure of an internal bearing of a screw compressor according to claim 4, wherein an oil-blocking ring is provided at a mounting position of the male and female rotors and the internal bearing group, and the oil-blocking ring is located between the male and female rotors and the oil nozzle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010200883.6A CN111237192B (en) | 2020-03-20 | 2020-03-20 | Oil circuit structure of internal bearing of lubrication screw compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010200883.6A CN111237192B (en) | 2020-03-20 | 2020-03-20 | Oil circuit structure of internal bearing of lubrication screw compressor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111237192A CN111237192A (en) | 2020-06-05 |
| CN111237192B true CN111237192B (en) | 2024-02-20 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010200883.6A Active CN111237192B (en) | 2020-03-20 | 2020-03-20 | Oil circuit structure of internal bearing of lubrication screw compressor |
Country Status (1)
| Country | Link |
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| CN (1) | CN111237192B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS516510U (en) * | 1974-07-03 | 1976-01-17 | ||
| JPS59215985A (en) * | 1983-05-20 | 1984-12-05 | Ebara Corp | Screw compressor |
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-
2020
- 2020-03-20 CN CN202010200883.6A patent/CN111237192B/en active Active
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| CN111237192A (en) | 2020-06-05 |
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Effective date of registration: 20240115 Address after: 350000 No.8, Dongjiang West Road, Liren Industrial Zone, Hangcheng street, Changle District, Fuzhou City, Fujian Province Applicant after: Fujian Snowman Compressor Co.,Ltd. Address before: Room 505, vocational education training center, Changle vocational secondary school, No.1 Houde, Changle District, Fuzhou City, Fujian Province, 350200 Applicant before: Fuzhou Xugu Technology Co.,Ltd. |
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