CN111237192A - Oil circuit structure for lubricating internal bearing of screw compressor - Google Patents
Oil circuit structure for lubricating internal bearing of screw compressor Download PDFInfo
- Publication number
- CN111237192A CN111237192A CN202010200883.6A CN202010200883A CN111237192A CN 111237192 A CN111237192 A CN 111237192A CN 202010200883 A CN202010200883 A CN 202010200883A CN 111237192 A CN111237192 A CN 111237192A
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- Prior art keywords
- oil
- screw compressor
- bearing
- male
- lubricating
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- 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.)
- Granted
Links
- 230000001050 lubricating effect Effects 0.000 title claims abstract description 18
- 239000007921 spray Substances 0.000 claims description 9
- 238000009434 installation Methods 0.000 claims description 6
- 238000002347 injection Methods 0.000 claims description 2
- 239000007924 injection Substances 0.000 claims description 2
- 239000003921 oil Substances 0.000 description 193
- 238000005461 lubrication Methods 0.000 description 6
- 238000005507 spraying Methods 0.000 description 6
- 239000010687 lubricating oil Substances 0.000 description 5
- 239000000446 fuel Substances 0.000 description 4
- 239000003595 mist Substances 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 125000004122 cyclic group Chemical group 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000010724 circulating oil Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 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
- 239000000243 solution Substances 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
Images
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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
The invention relates to an oil circuit structure for lubricating an internal bearing of 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 region, and the other end of the oil circuit channel is used for placing a bearing position of a bearing part to an oil return position of the male and female rotors and forming a low-pressure region at the oil return position of the male and female rotors.
Description
Technical Field
The invention relates to the technical field of refrigeration machinery, 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 supplied with oil by the pressure difference of suction and exhaust gases or are forcibly supplied with oil by an external oil pump and then are supplied to the lubricating points of the bearings through an external or internal circulating oil path. No matter which oil supply mode and circulating oil way are adopted, enough oil flow needs to be ensured to lubricate and cool the bearing, and due to the limitation of space and structure and design limitation of the compressor, the conventional compressor lubricating system has the problems of complex structure, low efficiency, high cost, poor lubricating effect, additional increase of power consumption of the compressor and the like.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: an oil path structure for lubricating an internal bearing of a screw compressor is provided.
In order to solve the technical problems, the invention adopts the technical scheme that:
the utility model provides an oil circuit structure of lubricated screw compressor inner bearing, screw compressor inside is provided with a pair of negative and positive rotor and inner bearing group, inner bearing group includes more than two bearing spare, and more than two bearing spare set up respectively at negative and positive rotor both ends so that negative and positive rotor is assembled inside screw compressor, the inside oil way passageway that still is provided with of screw compressor, the one end and the external world intercommunication of oil way passageway form high nip, the other end route of oil way passageway is used for placing behind the bearing position of bearing spare extremely negative and positive rotor's oil return department just is in negative and positive rotor's oil return department forms the low-pressure area.
The invention has the beneficial effects that: through the inside high-pressure district and the low-pressure region that forms corresponding at the compressor, the internal bearing of cyclic utilization oil to the compressor is lubricated under the effect of pressure differential, does not receive screw compressor's mechanism and spatial restriction, can stabilize effectually for a long time and provide sufficient oil flow for internal bearing and guarantee the lubrication and the cooling of bearing, and then has avoided the card of compressor that leads to because of compressor bearing damages to die the trouble.
Drawings
Fig. 1 is a schematic structural diagram of an oil path structure for lubricating an internal bearing of a screw compressor according to an embodiment of the present invention;
description of reference numerals:
1. a male rotor; 2. a female rotor;
31. an oil passage first passage; 32. an oil passage second passage; 33. a third oil passage; 34. an oil passage fourth passage;
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 spout pan; 82. a second oil spout pan; 83. a third oil spout pan; 84. a fourth oil spout pan;
91. a first oil slinger; 92. a second oil slinger;
10. a long nozzle;
111. a first oil control ring; 112. a second oil control ring; 113. a third oil control ring; 114. and a fourth oil control ring.
Detailed Description
In order to explain technical contents, achieved objects, and effects of the present invention in detail, the following description is made with reference to the accompanying drawings in combination with the embodiments.
Referring to fig. 1, the technical solution provided by the present invention is:
the utility model provides an oil circuit structure of lubricated screw compressor inner bearing, screw compressor inside is provided with a pair of negative and positive rotor and inner bearing group, inner bearing group includes more than two bearing spare, and more than two bearing spare set up respectively at negative and positive rotor both ends so that negative and positive rotor is assembled inside screw compressor, the inside oil way passageway that still is provided with of screw compressor, the one end and the external world intercommunication of oil way passageway form high nip, the other end route of oil way passageway is used for placing behind the bearing position of bearing spare extremely negative and positive rotor's oil return department just is in negative and positive rotor's oil return department forms the low-pressure area.
From the above description, the beneficial effects of the present invention are:
through the inside high-pressure district and the low-pressure region that forms corresponding at the compressor, the internal bearing of cyclic utilization oil to the compressor is lubricated under the effect of pressure differential, does not receive screw compressor's mechanism and spatial restriction, can stabilize effectually for a long time and provide sufficient oil flow for internal bearing and guarantee the lubrication and the cooling of bearing, and then has avoided the card of compressor that leads to because of compressor bearing damages to die the trouble.
Further, the inside oil storage chamber that still is provided with of helical-lobe compressor, two the oil storage chamber is located the both ends of negative and positive rotor respectively, the oil storage chamber is linked together with oil road passageway, the level in oil storage chamber is less than the level of oil return department.
As can be seen 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 the pressure difference.
Furthermore, part of bearing pieces in the screw compressor are connected in series to form a bearing assembly, and an oil thrower is arranged on an oil path in the screw compressor corresponding to the bearing assembly.
From the above description, the oil slinger can function as both an oil slinger and a spacer bearing, so that the sprays formed at both ends do not affect each other and are brought together by the oil slinger.
Furthermore, a long nozzle is arranged on an oil path channel in the screw compressor, the interior of the long nozzle is communicated with the oil path channel, and a jet orifice of the long nozzle is arranged towards the oil thrower.
As can be seen from the above description, the provision of a long nozzle provides direct forced lubrication of the bearings on the outside of 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 can be seen from the above description, a plurality of oil nozzles are provided, and the oil holes of the oil nozzles are arranged to facilitate the formation of oil mist lubrication.
Furthermore, an oil control ring is arranged at the installation position of the male and female rotors and the inner bearing group, and the oil control ring is positioned between the male and female rotors and the oil nozzle.
As is apparent from the above description, the oil control ring is provided to block the oil mist in the oil storage chamber from moving to the rotor side of the compressor.
Furthermore, the male and female rotors are horizontally arranged inside the screw compressor, and the oil return positions of the male and female rotors are positioned at the upper part of the screw compressor and correspond to the middle positions of the male and female rotors in the vertical direction.
As can be seen from the above description, when the oil is compressed and discharged by the compressor together with the compressed medium, the oil is cooled, lubricated, sealed and de-noised again in the process.
Referring to fig. 1, a first embodiment of the present invention is:
the utility model provides an oil circuit structure of lubricated screw compressor inner bearing, screw compressor inside is provided with a pair of negative and positive rotor and internal bearing group, negative and positive rotor includes intermeshing's negative rotor 2 and positive rotor 1, internal bearing group includes more than two bearing spare, and more than two bearing spare set up respectively at negative and positive rotor both ends so that negative and positive rotor is assembled inside screw compressor, the inside oil way passageway that still is provided with of screw compressor, the one end and the external intercommunication in oil way passageway form high-pressure region, the other end route in oil way passageway is used for placing behind the bearing position of bearing spare to the oil return department 7 of negative and positive rotor just is in the oil return department 7 of negative and positive rotor forms the low-pressure region.
The oil path channel is communicated with the outside through an oil filling port 6.
The screw compressor is characterized in that four oil storage cavities are further arranged inside the screw compressor, a first oil storage cavity 41 and a third oil storage cavity 43 are respectively arranged at two ends of the male rotor, a second oil storage cavity 42 and a fourth oil storage cavity 44 are respectively arranged at two ends of the female rotor, an oil passage is arranged between every two oil storage cavities, the first oil storage cavity 41 and the second oil storage cavity 42 are connected through an oil passage first passage 31, the third oil storage cavity 43 and the fourth oil storage cavity 44 are connected through an oil passage second passage 32, the second oil storage cavity 42 is connected to an oil return position 7 through an oil passage third passage 33, the fourth oil storage cavity 44 is connected to the oil return position 7 through a fourth oil passage 34, and the horizontal height of the oil storage cavities is lower than that of the oil return position 7.
In this embodiment, the oil passage is disposed at a middle position relative to the oil storage chamber, and serves to balance the pressure of the oil storage chambers of the male and female rotors, the oil flow passage, and limit the oil level.
And oil spraying points are arranged at the installation positions of the male and female rotors and the single bearing, and a plurality of oil nozzles with different calibers are arranged on the oil spraying points.
In the present embodiment, a first oil spray point 51 and a second oil spray point 52 are provided at the bearing sites of the single bearing at one end of the male rotor 1 and the female rotor 2, respectively.
The oil thrower comprises an inner disc and an outer disc, the thicknesses of the inner ring and the outer ring are completely consistent, and the oil thrower is arranged between a long string of ball bearings and the bearings.
In this embodiment, a first oil thrower disc 91 and a second oil thrower disc 92 are provided at a bearing site where one end of the male rotor is connected in series with a bearing.
The oil passage in the screw compressor is provided with a long nozzle 10, and the jet orifice of the long nozzle 10 is arranged towards the first oil thrower 91.
In the present embodiment, the long nozzles are disposed outside the angular contact ball bearing of the male rotor 1.
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 the present embodiment, a total of four oil squirting discs, a first oil squirting disc 81, a second oil squirting disc 82, a third oil squirting disc 83, and a fourth oil squirting disc 84, are provided at the bearing sites of the tandem bearings at one ends of the male and female rotors.
And the oil control ring is arranged at the mounting position of the male and female rotors and the inner bearing group and is positioned between the male and female rotors and the oil nozzle.
In the present embodiment, four oil control rings, namely, a first oil control ring 111, a second oil control ring 112, a third oil control ring 113 and a fourth oil control ring 114 are provided at the bearing positions of the serial bearings at one end of the male and female rotor.
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 compressor through an oil filling port on the compressor and then is divided into two paths through an oil path channel, wherein one path is connected to a bearing position on the left side (air inlet end) of the compressor on the figure, oil mist is formed under the action of an oil nozzle on an oil injection point to lubricate and cool the bearing, and the lubricating oil is collected in respective oil storage cavities, flows through the oil path channel after overflowing through the oil path channel and flows to a middle oil return position of the compressor under the action of pressure difference; the other path reaches the bearing position on the right side (exhaust end) of the compressor on the figure, so that a plurality of bearings are arranged, an oil spraying disc is arranged, a plurality of oil nozzles are arranged on the oil spraying disc to provide enough atomized oil for bearing lubrication, an oil thrower can be arranged on the bearings which are connected in series, one function is to arrange a long nozzle on the other side of the oil thrower, so that the oil nozzles can be arranged on both sides of the oil thrower, the oil spraying of the two oil nozzles cannot influence each other during oil spraying, and the other function is to accelerate the gathering of sprayed oil mist under the action of the oil thrower so as to discharge oil; an oil passage is also arranged between the oil storage chambers, and when the oil is collected, the oil flows over the oil passage and 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 the rotor of the compressor, is discharged together with the refrigerant gas discharged by the compressor under the action of the rotor, and enters the compressor for cyclic utilization after passing through the oil separator and the oil cooler and filter.
In summary, the oil path structure for lubricating the internal bearing of the screw compressor provided by the invention controls the amount of lubricating oil entering the bearing cavity by arranging the oil nozzle with different calibers, so that the lubricating effect and the working efficiency of the bearing are changed, the cost is further controlled, and the low energy consumption of the screw compressor is achieved; by reasonably arranging the oil control ring, the oil thrower and the long nozzle, the lubrication condition of a plurality of bearings in series can be improved; by arranging the oil path channel and setting the height of the oil path channel in the oil storage cavity, a proper amount of lubricating oil can be stored, and the compressor bearing is ensured to have enough lubricating oil in the initial operation stage; the oil is collected in the oil storage cavity, after the oil is filled to the height of an oil passage of the oil storage cavity, the oil flows to a low-pressure area in the middle section of the compressor rotor under the action of pressure difference, so that the oil is compressed and discharged together with a compression medium of the compressor, and the part of the oil plays roles of cooling, lubricating, sealing and noise reduction in the process of being compressed and discharged.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent changes made by using the contents of the present specification and the drawings, or applied directly or indirectly to the related technical fields, are included in the scope of the present invention.
Claims (7)
1. The utility model provides an oil circuit structure of lubricated screw compressor inner bearing, screw compressor inside is provided with a pair of negative and positive rotor and inner bearing group, inner bearing group includes more than two bearing spare, and more than two bearing spare set up respectively at negative and positive rotor both ends so that negative and positive rotor is assembled inside screw compressor, its characterized in that, the inside oil way passageway that still is provided with of screw compressor, the one end and the external intercommunication of oil way passageway form high nip, the other end route of oil way passageway is used for placing behind the bearing position of bearing spare to 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 area.
2. The oil circuit structure for lubricating the internal bearing of the screw compressor according to claim 1, wherein oil storage cavities are further arranged inside 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 circuit channel, and the horizontal height of the oil storage cavities is lower than that of the oil return position.
3. The oil path structure for lubricating the internal bearing of the screw compressor as claimed in claim 1, wherein the partial bearing members in the screw compressor are connected in series to form a bearing assembly, and an oil thrower is disposed in the oil path in the screw compressor corresponding to the bearing assembly.
4. The oil passage structure for lubricating an internal bearing of a screw compressor according to claim 3, wherein a long nozzle is provided in the oil passage inside the screw compressor, the inside of the long nozzle communicates with the oil passage, and the injection port of the long nozzle is provided toward the oil thrower.
5. The oil path structure for lubricating the internal bearing of the screw compressor according to claim 1, 3 or 4, wherein an oil spray disc is arranged at the installation position of the male and female rotors and the internal bearing set, a plurality of oil spray nozzles are uniformly distributed on the oil spray disc, and the oil spray nozzles are arranged towards the internal bearing set.
6. The oil path structure for lubricating the internal bearing of the screw compressor according to claim 5, wherein an oil control ring is arranged at the installation position of the male and female rotors and the internal bearing set, and the oil control ring is positioned between the male and female rotors and the oil nozzle.
7. The oil circuit structure for lubricating the internal bearing of the screw compressor according to claim 1, wherein the male and female rotors are horizontally arranged inside the screw compressor, and the oil return positions of the male and female rotors are positioned at the upper part of the screw compressor and correspond to the middle positions of the male and female rotors in the vertical direction.
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 true CN111237192A (en) | 2020-06-05 |
| CN111237192B CN111237192B (en) | 2024-02-20 |
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| 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) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117307485A (en) * | 2023-10-13 | 2023-12-29 | 中科仪(南通)半导体设备有限责任公司 | A vacuum pump lubrication supply system |
| CN118030533A (en) * | 2024-02-22 | 2024-05-14 | 山东省章丘鼓风机股份有限公司 | Multi-channel lubrication distribution device for low-pressure screw blowers |
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| CN101218433A (en) * | 2005-06-29 | 2008-07-09 | 株式会社前川制作所 | Oil supply method and device for two-stage screw compressor and operation method of refrigeration device |
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| CN212672062U (en) * | 2020-03-20 | 2021-03-09 | 福州市虚谷技术有限公司 | Oil circuit structure for lubricating internal bearing of screw compressor |
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2020
- 2020-03-20 CN CN202010200883.6A patent/CN111237192B/en active Active
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117307485A (en) * | 2023-10-13 | 2023-12-29 | 中科仪(南通)半导体设备有限责任公司 | A vacuum pump lubrication supply system |
| CN118030533A (en) * | 2024-02-22 | 2024-05-14 | 山东省章丘鼓风机股份有限公司 | Multi-channel lubrication distribution device for low-pressure screw blowers |
| CN118030533B (en) * | 2024-02-22 | 2025-12-05 | 山东省章丘鼓风机股份有限公司 | Low-pressure screw blower multi-channel lubrication distribution device |
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| Publication number | Publication date |
|---|---|
| CN111237192B (en) | 2024-02-20 |
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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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| GR01 | Patent grant |