CN105201857A - Oil jet screw air compressor exhaust end oil return structure - Google Patents
Oil jet screw air compressor exhaust end oil return structure Download PDFInfo
- Publication number
- CN105201857A CN105201857A CN201510714316.1A CN201510714316A CN105201857A CN 105201857 A CN105201857 A CN 105201857A CN 201510714316 A CN201510714316 A CN 201510714316A CN 105201857 A CN105201857 A CN 105201857A
- Authority
- CN
- China
- Prior art keywords
- oil
- exhaust end
- fuel injection
- lobe compressor
- helical lobe
- 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.)
- Pending
Links
Landscapes
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
The invention provides an oil jet screw air compressor exhaust end oil return structure capable of effectively reducing the oil jet screw air compressor production matching period and cost and prolonging the respective service life of a bearing and a compressor. The oil jet screw air compressor exhaust end oil return structure comprises an oil jet screw air compressor shell, the exhaust end of the oil jet screw air compressor shell is provided with an exhaust end bearing pedestal, the exhaust opening end of the exhaust end bearing pedestal is provided with an exhaust end cover, one side surface of the exhaust end bearing pedestal facing the exhaust end cover is provided with a vertical groove, an oil return channel is arranged in the exhaust end bearing pedestal, the upper end of the groove and the oil return channel are communicated through a switching cavity, the exhaust end of the oil jet screw air compressor shell is provided with an oil return channel communicated with a rotor working cavity, and the oil return channel is communicated with an oil discharge channel.
Description
Technical field
The present invention relates to fuel injection helical lobe compressor technical field, be specially fuel injection helical lobe compressor exhaust end oil-returning structure.
Background technique
In fuel injection helical lobe compressor, except working rotor chamber, the main motion parts such as bearing also need fuel feeding, and these oil are all in lower pressure after completing the function of self, but the pressure in compressor sump is exhaust pressure (the double fuel tank that does of the deaerator in general screw compressor system uses), so they can not rely on Action of Gravity Field to flow into fuel tank simply, so it must be made to get back to intakeport, compressed with working gas and discharged.But due to the temperature of these oil returns higher than inhalation temperature, and wherein with a small amount of pressurized gas, if directly get back to air-breathing aperture, actual aspirated volume and the mass flow rate of compressor will be reduced, therefore oil return aperture is all arranged on the position that air-breathing terminates usually.
Existing fuel injection helical lobe compressor exhaust end oil-returning structure is made up of jointly the upper channel 14 in discharge end bearings seat upper plenum 12, passage 13, fuel injection helical lobe compressor housing 3 and inlet end bearing support 15, see Fig. 1 ~ Fig. 4, it utilizes the oil pressure pressure reduction at two ends that lubricant oil is led back inlet end bearing support from discharge end bearings seat, get back in intakeport close to the position A that air-breathing terminates, enter working rotor chamber subsequently together with gas, and then participate in next cyclic process.
Existing oil-returning structure needs on host shell and discharge end bearings seat, reserve processing oil duct desired position and space (the oblique line section left bottom projection in Fig. 3, Fig. 4) in advance usually, which increase component die, blahk structure complexity, too increase the weight of main frame, not only have impact on compactedness and the aesthetic property of main machine structure, also make supporting cycle and cost increase; In addition, when main shut-down system, the lubricant oil in the left-hand axis bearing bore shown in Fig. 4 all can flow out from left side, does not almost have trapped fuel, easily cause main frame upper once start shooting time herein bearing oil starvation dry grinding, affect the working life of bearing.
Summary of the invention
Fuel injection helical lobe compressor exhaust end oil-returning structure is the invention provides for the problems referred to above, it can solve screw compression machine part processing mold, blahk structure design complexity that existing structure defect causes, helical lobe compressor host Heavy Weight, the problem that the supporting cycle is long, cost of production is high, can also solve short problem in discharge end bearings working life simultaneously.
Fuel injection helical lobe compressor exhaust end oil-returning structure, it comprises fuel injection helical lobe compressor housing, the exhaust end of described fuel injection helical lobe compressor housing is provided with discharge end bearings seat, the exhaust port side of described discharge end bearings seat is provided with exhaust end cover, it is characterized in that: described discharge end bearings seat has vertical groove on a side of described exhaust end cover, drainback passage is had in described discharge end bearings seat, by transferring cavity UNICOM between the upper end of described groove and described drainback passage, the exhaust end of described fuel injection helical lobe compressor housing has the oil drain passage be communicated with working rotor chamber, described drainback passage is communicated with oil drain passage.
Technological scheme of the present invention, also can adopt the drainback passage in discharge end bearings seat to be directly communicated with working rotor chamber, and without the need to arranging oil drain passage at the exhaust end of fuel injection helical lobe compressor housing.
Further, the position of described groove between two bearing installation cavitys of described discharge end bearings seat.
Further, described oil drain passage is arranged at the intakeport side of fuel injection helical lobe compressor.
Compared with existing fuel injection helical lobe compressor exhaust end oil-returning structure, beneficial effect of the present invention is: it has thoroughly abandoned the structure that existing fuel injection helical lobe compressor arranges separately drainback passage, but at the inner inner side surface by exhaust end cover of exhaust end, the groove of discharge end bearings seat and drainback passage, and the oil drain passage on fuel injection helical lobe compressor housing forms an oil return cavity directly to the oil extraction of working rotor chamber, thus reduce mould, the complexity of blahk structure, decrease main frame weight, effectively reduce the supporting cycle and cost of producing fuel injection helical lobe compressor, and it is by vertical groove on discharge end bearings seat, ensure to put aside a small amount of lubricant oil when compressor emergency shutdown in bearing support, thus make the roller of bearing still have partial wetting to reach the object of protection bearing in lubricant oil, the working life of raising bearing and compressor.
Accompanying drawing explanation
Fig. 1 is with the top cross-sectional view of the helical lobe compressor host main perspective degree existing fuel injection helical lobe compressor exhaust end oil-returning structure that is benchmark;
Fig. 2 is with the left apparent direction schematic diagram of the helical lobe compressor host main perspective degree existing fuel injection helical lobe compressor inlet end bearing that is benchmark;
Fig. 3 is with the left apparent direction partial cutaway schematic of the helical lobe compressor host main perspective degree existing fuel injection helical lobe compressor housing that is benchmark;
Fig. 4 is with the left apparent direction partial cutaway schematic of the helical lobe compressor host main perspective degree existing fuel injection helical lobe compressor discharge end bearings seat that is benchmark;
Fig. 5 is the main line of vision part sectioned view of the first technological scheme of fuel injection helical lobe compressor exhaust end oil-returning structure of the present invention;
Fig. 6 be in fuel injection helical lobe compressor exhaust end oil-returning structure of the present invention exhaust end cover by the schematic diagram of the right apparent direction of Fig. 5;
Fig. 7 be in fuel injection helical lobe compressor exhaust end oil-returning structure of the present invention discharge end bearings seat by the schematic diagram of the left direction of Fig. 5;
Fig. 8 be in fuel injection helical lobe compressor exhaust end oil-returning structure of the present invention fuel injection helical lobe compressor housing by the schematic diagram of the left direction of Fig. 5;
Fig. 9 is the main line of vision part sectioned view of fuel injection helical lobe compressor exhaust end oil-returning structure the second technological scheme of the present invention; .
Embodiment
Embodiment one:
See Fig. 5, the fuel injection helical lobe compressor exhaust end oil-returning structure of the first technological scheme of the present invention, it comprises fuel injection helical lobe compressor housing 3, the exhaust side of fuel injection helical lobe compressor housing 3 is provided with discharge end bearings seat 2, the exhaust port side of discharge end bearings seat 2 is provided with exhaust end cover 1, discharge end bearings seat 2 has vertical groove 4 on a side of exhaust end cover 1, groove 4 is positioned at two bearing installation cavity 2-1 of discharge end bearings seat, position between 2-2, drainback passage 6 is had in discharge end bearings seat 2, by transferring cavity 5 UNICOM between the upper end of groove 4 and drainback passage 6, the exhaust end of fuel injection helical lobe compressor housing 3 has the oil drain passage 7 be communicated with working rotor chamber 8, drainback passage 6 is communicated with oil drain passage 7, oil drain passage 7 is arranged at intakeport 9 side of fuel injection helical lobe compressor, therefore the pressure in oil drain passage 7 is pressure of inspiration(Pi).In Fig. 5,10 is exhaust outlet of compressor.
Fuel injection helical lobe compressor exhaust end oil-returning structure of the present invention its by the inner side plane 1-1 of exhaust end cover, the vertical groove 4 of discharge end bearings seat, switching cavity 5, oil drain passage 7 on drainback passage 6 and housing 3 is formed, when fuel injection helical lobe compressor normally works, the lubricant oil of discharge end bearings is slowly put aside in discharge end bearings seat 2, until lubricating oil level arrives the starting point D of oil-returning structure, the starting point D of oil-returning structure is at the bottom end of groove 4, now the pressure of lubricant oil is approximately 0.1 ~ 0.2MPa(gauge pressure), and the pressure in oil drain passage 7 is pressure of inspiration(Pi), under the effect of the pressure difference of compressor air suction mouth pressure and vertical channel bottom lubricant oil, lubricant oil upwards flows along vertical groove 4, through switching cavity 5, drainback passage 6 and oil drain passage 7, finally enter working rotor chamber, then carry out compressing together with working gas and discharge.
When compressor bank is shut down, along with the unloading of unit, the charge oil pressure of discharge end bearings seat 2 slowly reduces, when the difference of pressure potential be not enough to compensate geopotential energy difference time, lubricant oil will be got back in bearing support along groove 4 under gravity, when ensure that compressor emergency shutdown, dash area in a small amount of lubricant oil 11(accompanying drawing 7 is still had) in bearing bore, when unit once starts, the lubricant oil 11 resided in bearing bore can play the effect of lubricating bearings, avoid the phenomenon occurred as there is bearing oil starvation in existing exhaust end oil-returning structure, and then the working life of bearing can be improved.
Embodiment two:
See Fig. 9, the place that embodiment two is different from the technological scheme of embodiment one is only: the exhaust end of its fuel injection helical lobe compressor housing 3 does not offer oil drain passage, the oil outlet of the drainback passage 6 in discharge end bearings seat 2 is positioned at the radial extension in working rotor chamber 8, and thus drainback passage 6 is directly communicated with working rotor chamber 8, thus the fuel injection helical lobe compressor exhaust end oil-returning structure of the present embodiment its by the inner side plane 1-1 of exhaust end cover, the vertical groove 4 of discharge end bearings seat, switching cavity 5, drainback passage 6 is formed, when fuel injection helical lobe compressor normally works, the lubricant oil of discharge end bearings is slowly put aside in discharge end bearings seat 2, until lubricating oil level arrives the starting point D of oil-returning structure, the starting point D of oil-returning structure is at the bottom end of groove 4, now the pressure of lubricant oil is approximately 0.1 ~ 0.2MPa(gauge pressure), and the pressure now in drainback passage 6 is pressure of inspiration(Pi), under the effect of the pressure difference of compressor air suction mouth pressure and vertical channel bottom lubricant oil, lubricant oil upwards flows along vertical groove 4, through switching cavity 5, drainback passage 6, finally enter working rotor chamber, then carry out compressing together with working gas and discharge.
Claims (4)
1. fuel injection helical lobe compressor exhaust end oil-returning structure, it comprises fuel injection helical lobe compressor housing, the exhaust end of described fuel injection helical lobe compressor housing is provided with discharge end bearings seat, the exhaust port side of described discharge end bearings seat is provided with exhaust end cover, it is characterized in that: described discharge end bearings seat has vertical groove on a side of described exhaust end cover, drainback passage is had in described discharge end bearings seat, by transferring cavity UNICOM between the upper end of described groove and described drainback passage, the exhaust end of described fuel injection helical lobe compressor housing has the oil drain passage be communicated with working rotor chamber, described drainback passage is communicated with oil drain passage.
2. fuel injection helical lobe compressor exhaust end oil-returning structure, it comprises fuel injection helical lobe compressor housing, the exhaust end of described fuel injection helical lobe compressor housing is provided with discharge end bearings seat, the exhaust port side of described discharge end bearings seat is provided with exhaust end cover, it is characterized in that: described discharge end bearings seat has vertical groove on a side of described exhaust end cover, drainback passage is had in described discharge end bearings seat, by transferring cavity UNICOM between the upper end of described groove and described drainback passage, described drainback passage is directly communicated with working rotor chamber.
3. fuel injection helical lobe compressor exhaust end oil-returning structure according to claim 1 and 2, is characterized in that: the position of described groove between two bearing installation cavitys of described discharge end bearings seat.
4. fuel injection helical lobe compressor exhaust end oil-returning structure according to claim 1, is characterized in that: described oil drain passage is arranged at the intakeport side of fuel injection helical lobe compressor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510714316.1A CN105201857A (en) | 2015-10-29 | 2015-10-29 | Oil jet screw air compressor exhaust end oil return structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510714316.1A CN105201857A (en) | 2015-10-29 | 2015-10-29 | Oil jet screw air compressor exhaust end oil return structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105201857A true CN105201857A (en) | 2015-12-30 |
Family
ID=54949735
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510714316.1A Pending CN105201857A (en) | 2015-10-29 | 2015-10-29 | Oil jet screw air compressor exhaust end oil return structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105201857A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110905817A (en) * | 2019-11-25 | 2020-03-24 | 珠海格力电器股份有限公司 | Compressor with high lubrication reliability |
| CN115045835A (en) * | 2022-06-28 | 2022-09-13 | 德耐尔能源装备有限公司 | High-efficient oil spout screw rod host computer |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10288175A (en) * | 1997-04-10 | 1998-10-27 | Kobe Steel Ltd | Oil-cooled screw compressor |
| CN2740813Y (en) * | 2004-11-12 | 2005-11-16 | 天津泵业机械集团有限公司 | Flange-connected three-serew pump with gear transmission |
| CN2811603Y (en) * | 2005-07-11 | 2006-08-30 | 天津泵业机械集团有限公司 | High pressure three-screw pump |
| CN202789537U (en) * | 2012-06-12 | 2013-03-13 | 浙江杰能压缩设备有限公司 | Shaft-seal-free oil injection single-screw air compressor |
| CN203548193U (en) * | 2013-11-23 | 2014-04-16 | 黄山工业泵制造有限公司 | Simple double-screw pump |
| CN204299866U (en) * | 2014-12-02 | 2015-04-29 | 天津泵业机械集团有限公司 | Cantilever type lubrication three screw pump |
| 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 |
-
2015
- 2015-10-29 CN CN201510714316.1A patent/CN105201857A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10288175A (en) * | 1997-04-10 | 1998-10-27 | Kobe Steel Ltd | Oil-cooled screw compressor |
| CN2740813Y (en) * | 2004-11-12 | 2005-11-16 | 天津泵业机械集团有限公司 | Flange-connected three-serew pump with gear transmission |
| CN2811603Y (en) * | 2005-07-11 | 2006-08-30 | 天津泵业机械集团有限公司 | High pressure three-screw pump |
| CN202789537U (en) * | 2012-06-12 | 2013-03-13 | 浙江杰能压缩设备有限公司 | Shaft-seal-free oil injection single-screw air compressor |
| CN203548193U (en) * | 2013-11-23 | 2014-04-16 | 黄山工业泵制造有限公司 | Simple double-screw pump |
| CN204299866U (en) * | 2014-12-02 | 2015-04-29 | 天津泵业机械集团有限公司 | Cantilever type lubrication three screw pump |
| 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 (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110905817A (en) * | 2019-11-25 | 2020-03-24 | 珠海格力电器股份有限公司 | Compressor with high lubrication reliability |
| CN115045835A (en) * | 2022-06-28 | 2022-09-13 | 德耐尔能源装备有限公司 | High-efficient oil spout screw rod host computer |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205225746U (en) | Oil -injected screw compressor end oil return structure | |
| CN105201857A (en) | Oil jet screw air compressor exhaust end oil return structure | |
| CN103140651A (en) | System for pressurising the bearing chambers of turbine engines machines using air taken from the intake duct | |
| CN106762636B (en) | sliding-vane compressor | |
| JP2004232569A (en) | Screw compressor | |
| CN103527490B (en) | Machine head assembly and air compressor | |
| CN204921363U (en) | Vortex formula air compressor machine | |
| CN102052122A (en) | Oil pan for engine | |
| CN106286210A (en) | Reciprocating vacuum pump | |
| CN102678573B (en) | A kind of exhaust structure of horizontal type rolling rotor formula compressor | |
| CN210484072U (en) | Integrated form helical-lobe compressor | |
| CN102444581A (en) | Rotary compressor | |
| CN106593880A (en) | Compressor | |
| CN206397743U (en) | The motor compressor of the built-in economic benefits and social benefits oil separating structure of band | |
| CN102953990A (en) | Full-closed vertical scroll compressor with motor placed over pump body | |
| CN203239633U (en) | Casing structure of two-section cylinder type centrifugal compressor | |
| CN106337811B (en) | Compressor and air conditioner with it | |
| CN205455990U (en) | Tobacco is organized with mechanical type vacuator | |
| CN204152797U (en) | A kind of vertical compressor with two outlet pipes | |
| CN204113661U (en) | Compressor exhaust structure, screw compressor and air conditioning unit | |
| CN206221262U (en) | Compressor and the air-conditioner with it | |
| CN201934315U (en) | Air inlet and air outlet structure of water lubricated single-screw compressor | |
| CN208221097U (en) | A kind of helical-lobe compressor automatic lubrication installation | |
| CN205349747U (en) | Compressor housing and horizontal compressor | |
| CN210343649U (en) | Oil-electricity hybrid anti-rotation power generation two-shaft compressor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20151230 |