CN205260257U - Compressor - Google Patents
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- CN205260257U CN205260257U CN201520935290.9U CN201520935290U CN205260257U CN 205260257 U CN205260257 U CN 205260257U CN 201520935290 U CN201520935290 U CN 201520935290U CN 205260257 U CN205260257 U CN 205260257U
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- oil
- compressor
- equalizing pipe
- pipe road
- return line
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Abstract
The utility model discloses a compressor, include go back to oil pipe way and equal oil pipe way, the entry end on equal oil pipe way is connected to the bottom oil bath that is arranged in compressor with the exit end that goes back to the oil pipe way, and the entry end that goes back to the oil pipe way is connected to the oil return opening of compressor upper portion oil bath, has the oil level of predetermineeing in the oil bath of compressor's bottom, compressor still includes the oil circuit auto -change over device who all is connected with equal oil pipe way and time oil pipe way, and oil circuit auto -change over device has equal oily attitude and oil return state. The utility model discloses the oil return is with quick equal oily fast for the oil balancing time reduces by a wide margin, and the current oil mass of make full use of distributes between each compressor, effectively reduces the injection flow, reduces the oil expenses cost.
Description
Technical field
The present invention relates to compressor field, relate to especially a kind of compressor.
Background technology
Along with the fast development of multi-joint unit, the large capacity and the capacity that form by multiple compressorsAdjustable air-conditioning unit range of application is more and more wider. Multi-joint unit has that pipeline is long, drop is large conventionallyAnd the feature such as elbow is many, compared with single compressor operation, in multi-joint unit, be easy to outOil-poor or the poly-oily phenomenon of existing a certain compressor, in order to ensure each compressor in multi-joint systemInterior lubricating oil moves under the oil level of safety, the core technology that multi-joint unit need to solveProblem is exactly to keep reliable and stable oily balancing technique between multiple compressors.
Existing comparatively ripe oily balancing technique is to adopt oil equalizing pipe structure, by compression caseExternal body connects the oil equalizing pipe of compressor exhaust pipe and compressor bottom oil sump, relies on oil equalizing pipe twoThe different pressure reduction producing of end rate of flow of fluid is by the profit in the compressor bottom oil sump of the poly-oily phenomenon of appearanceLubricating oil is drained in the fluid reservoir of system in time, prevents that lubricating oil from assembling and leading in a certain compressorCause other compressors oil-poor, realize the oily balance in multi-joint system. Although this technology structure letterSingle, but in the time that compressor carries out oil equilibrium according to air-breathing oil return, if the inner oil return of compressorSlow or exhaust oil shortage ratio is high, will cause from the entrained lubricating oil of compressor air suction can not andTime arrive at compressor bottom oil sump, now can cause the long and system need of whole system oil equilibration timeWant the problems such as injection flow is many, system oil equilibration time length means that compressor may operate in oil starvationTime under state is long, reduces the reliability of multi-joint unit, and injection flow can increase multi-connected machine at mostThe cost of group.
Summary of the invention
In the embodiment of the present invention, provide a kind of compressor, to solve oily equilibration time in prior artIt is long that long, injection flow demand causes compressor may operate in time under oil starvation state more, notesOil mass causes increasing the problems such as the cost of multi-joint unit more.
For achieving the above object, the invention provides a kind of compressor, comprise return line and all oilyPipeline, the arrival end on oil equalizing pipe road is connected to the bottom oil sump that is arranged in compressor, return lineArrival end be connected to the oil return opening of compressor top oil sump, tool in the oil sump of the bottom of compressorThere is default oil level; Compressor also comprises that the oil circuit being all connected with oil equalizing pipe road and return line switchesDevice, oil-way switching apparatus has when in the oil sump of bottom, oil level is higher than default oil level, makes oil returnOil return in pipeline flows to the equal oil condition on oil equalizing pipe road; And oil level is low in the oil sump of bottomIn or while equaling default oil level, make oil return in return line flow to the oil return state of bottom oil sump.
As preferably, oil-way switching apparatus also comprises magnetic valve, all oil end tube connector and oil sump endTube connector; The port of export of return line is connected with the entrance of magnetic valve; All oil is held tube connectorFirst end is connected with the first outlet of magnetic valve, all the second end and oil equalizing pipes of oil end tube connectorRoad is communicated with; The first end of oil sump end tube connector is connected with the second outlet of magnetic valve, oil sump endTube connector the second end is communicated with bottom oil sump.
As preferably, in the oil sump of the bottom of compressor, be provided with fuel level sensor, fuel level sensorBe arranged on the height of default oil level.
As preferably, the height of default oil level is not less than the height of the arrival end on oil equalizing pipe road.
As preferably, compressor also comprises the gas exhaust piping that is positioned at compressor top, oil equalizing pipe roadThe port of export be connected with gas exhaust piping.
As preferably, oil-way switching apparatus comprises liquid collecting tank; Liquid collecting tank is connected on oil equalizing pipe road,And the arrival end on oil equalizing pipe road is connected with oil equalizing pipe road; The upper end of liquid collecting tank and return lineBe connected, the lower end of liquid collecting tank is communicated with bottom oil sump by liquid collecting tank return line.
As preferably, return line extends to the bottom of liquid collecting tank from the upper end of liquid collecting tank.
As preferably, the height one of the height of the arrival end on oil equalizing pipe road and the default oil level of oil sumpCause.
As preferably, the diameter < liquid collecting tank of the diameter=return line of the arrival end on oil equalizing pipe road returnsThe diameter on diameter < oil equalizing pipe road of stream pipeline.
The compressor the present invention relates to, by arranging return line, oil equalizing pipe road in compressorAnd oil-way switching apparatus can realize quick oil return and quick all oil, make oily equilibration time largeWidth reduces, and makes full use of existing oil mass and distributes between each compressor, effectively reduces injection flow,Reduce and use oily cost.
Brief description of the drawings
Fig. 1 is the compressor that the present invention relates at equal structural representation under oil condition fast;
The structural representation that Fig. 2 is the compressor that the present invention relates under oil return state fast;
Fig. 3 be the another kind that the present invention relates to revolve compressor fast all the structure under oil condition showIntention;
The structural representation that Fig. 4 is the another kind of compressor that the present invention relates under oil return state fastFigure;
Fig. 5 is the structural representation of the liquid collecting tank that the present invention relates to;
Fig. 6 be the liquid collecting tank that the present invention relates at equal fundamental diagram under oil condition fast;
Fig. 7 is the fundamental diagram under oil return state fast of the liquid collecting tank that the present invention relates to.
Description of reference numerals: 1, suction line; 2, compressor; 3, fuel level sensor; 4,Oil sump; 5, all oil is held tube connector; 6, magnetic valve; 7, oil equalizing pipe road; 8, return line; 9,Gas exhaust piping; 10, fluid reservoir; 11, liquid collecting tank; 12, liquid collecting tank return line; 13, profitLubricating oil; 51, oil sump end tube connector; 71, the arrival end on oil equalizing pipe road; 72, oil equalizing pipe roadThe port of export; 81, the arrival end of return line.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail, but does not doFor limitation of the invention.
Fig. 1 shows a kind of compressor 2, and it comprises exterior line parts, these exterior line partsComprise suction line 1, gas exhaust piping 9, oil equalizing pipe road 7 and return line 8, wherein, air-breathingPipeline 1 is positioned at the top of compressor 2, and gas exhaust piping 9 is positioned at the top of compressor 2, compressionMachine 2 is connected with fluid reservoir 10 by gas exhaust piping 9, the port of export on oil equalizing pipe road 7 72 withGas exhaust piping 9 is connected, and the arrival end 71 on oil equalizing pipe road 7 enters as the lower end on oil equalizing pipe road 7Mouth is connected to and is arranged in compressor 2 exhaust cavity bottom oil sumps 4; Return line 8 enters by itMouth end 81 is connected to the oil return opening of compressor 2 top oil sumps, and the port of export of return line 8 connectsTo bottom oil sump 4, in the described bottom of described compressor oil sump 4, there is default oil level, like thisCan make to accumulate in the lubricating for the lubricated each friction pair of the pump housing in compressor 2 top oil sumpsOil enters return line 8 by the arrival end 81 of return line 8.
This compressor also comprises that the oil circuit being all connected with oil equalizing pipe road 7 and return line 8 switches dressPut, oil-way switching apparatus has when in bottom oil sump 4, oil level is higher than default oil level, makes oil returnOil return in pipeline 8 flows to the equal oil condition on oil equalizing pipe road 7; And, in bottom oil sump 4Oil level during less than or equal to default oil level, makes the oil return in return line 8 flow to bottom oil sump 4Oil return state. This oil-way switching apparatus comprises magnetic valve 6, all oil is held tube connector 5 and oil sump endTube connector 51, wherein, the port of export of return line 8 is by magnetic valve 6 and equal oil end tube connectorOne end of 5 is connected with one end of oil sump end tube connector 51, wherein, and magnetic valve 6 control pipersConnected state, it is preferably triple valve or three two three-way electromagnetic valves. In addition, all oil end connectsThe other end of adapter 5 is connected with oil equalizing pipe road 7, and the other end of oil sump end tube connector 51 connectsTo oil sump 4, can make like this lubricating oil refluxing from oil equalizing pipe road 7 rely on magnetic valve 6 to controlBe transported in oil equalizing pipe road 7 by equal oil end tube connector 5, also can connect by bottom oil sump endTake over 51 and be transported in compressor 2 bottom oil sumps 4, realize oil return and all switchings of oil condition,And oil return process is the impact of machine internal gas flow disturbance by compression not, and compressor oil return is rapid, withTime also reduced compressor air-discharging band oil mass, make air-breathing oil return better effects if. In addition pressing,The bottom of contracting machine 2 is provided with fuel level sensor 3. Fuel level sensor 3 in this embodiment is used for establishingPut the level height of monitoring compressor 2 bottom oil sumps 4, simultaneously by hydraulic compression machine 2 bottom oil sumps 4Level height, control magnetic valve 6 commutate according to the signal of fuel level sensor 3. Wherein,Top oil sump refers to that compressor top collects and gather for the lubricating oil of lubricated Pump Body Parts and bearingSpace, the current return circuit of this part oil sump lubricating oil directly refluxes by outer tube, has reducedThe impact of compressor internal disturbance air-flow, makes the faster compressor air-discharging band of back-flow velocity oil mass few.
For the position of the arrival end 71 on oil equalizing pipe road 7, when oil in compressor 2 bottom oil sumps 4When position there was not the arrival end 71 on oil equalizing pipe road 7, with respect to the port of export 72 places on oil equalizing pipe road 7Rate of flow of fluid (exhaust flow rate), the rate of flow of fluid at arrival end 71 places on oil equalizing pipe road is approximatelyZero, known according to Bernoulli equation, because rate of flow of fluid difference causes hydrostatic pressure head difference,Arrival end 71 place's hydrostatic pressure heads on oil equalizing pipe road 7 are large, the port of export 72 places on oil equalizing pipe road 7Hydrostatic head is little, therefore, produces pressure reduction at 7 two ends, oil equalizing pipe road, and the principle of oil equalizing pipe work justTo utilize this pressure reduction that the lubricating oil at 71 places of the arrival end higher than oil equalizing pipe road 7 is transported to exhaustIn pipeline 9, prevent that lubricating oil from, in oil sump 4 inner accumulated, avoiding causing other compressors in systemOil starvation; When the level height of compressor 2 bottom oil sumps 4 is lower than the arrival end 71 on oil equalizing pipe road 7, the lubricating oil in oil sump 4 now cannot enter gas exhaust piping 9 by oil equalizing pipe road 7 when at the place, pressesContracting machine 2 receives the lubricating oil from system by air-breathing oil return, relies on quick return line 8 simultaneouslyEnsure that the interior lubricating oil of compressor 2 can, by exhaust band oil discharge compressor 2, can not ensure like thisCompressor 2 bottom oil sumps 4 are always in default oil level.
The oil sump 4 of oil can be different according to to(for) the exterior line parts that adopt above-mentioned compressor 2Position is lubricated the control of oil flow, and this control mainly comprises two kinds of duties, as Fig. 1Shown in, particularly, in a kind of duty, oil sump 4 oil of monitoring when fuel level sensor 3Position is when setting oil level value, and wherein, the setting value of oil sump 4 oil levels should be not less than oil equalizing pipe road 7At the height of the arrival end 71 of compressor 2 bottom oil sumps 4. Fuel level sensor 3 is by anti-this signalThe magnetic valve 6 of feeding, controls magnetic valve 6 and commutates, and now magnetic valve 6 cuts off return line 8 and oilPath between pond end tube connector 51, opens return line 8 and the equal oily path of holding tube connector 5,The lubricating oil refluxing from compressor 2 top oil sumps by return line 8, all oil end tube connector 5,Oil equalizing pipe road 7 and gas exhaust piping 9 are transported in fluid reservoir 10. Like this, when multicomputer systemIn when oil sump oil level is higher than setting value in a certain compressor, in this compressor oil sump, lubricating oil is justOften be transported in fluid reservoir by oil equalizing pipe road, meanwhile, than compressor in the past, fromThe lubricating oil that compressor top oil sump refluxes now can not be back in the oil sump of compressor bottom againAnd be delivered directly in system fluid reservoir, there is fast all effects of oil for this compressor, anotherThere is on the one hand the effect of quick oil return for the compressor of oil starvation.
As shown in Figure 2 another duty of the present embodiment, in another duty, whenLevel height in compressor 2 bottom oil sumps 4 when setting oil level value, fuel level sensor 3This signal feedback, to magnetic valve 6, is controlled to magnetic valve 6 and commutated, and now magnetic valve 6 is opened oil returnPath between pipeline 8 and oil sump end tube connector 51, cuts off return line 8 and is connected with equal oil endThe path of pipe between 5, the lubricating oil refluxing from compressor 2 top oil sumps by return line 8,Oil sump end tube connector 51 is directly back in compressor 2 bottom oil sumps 4. Therefore, when in systemWhen in a certain compressor, oil sump oil level is lower than setting value, by solenoid control return duct and companyTake over the connected state on road, the lubricating oil refluxing from compressor top oil sump by return line 8,Oil sump end tube connector 51 is directly back to compressor 2 bottoms fast, can reflux by self in timeThe oil mass of make up compressor 2 bottom oil sumps 4, and be unlikely to because compressor self reflux slow orReducing sharply of the problems such as person's exhaust band oil is many aggravation compressor bottom oil sump oil mass, is at short noticeCause oil starvation harm.
Can, according to the level height of compressor 2 bottom oil sumps 4, can will pass through in time like thisThe lubricating oil that return line 8 refluxes is transported to the place needing most. , when compressor 2 startsWhen poly-oil, return line 8 is not communicated with oil sump 4, and is directly transported to by oil equalizing pipe road 7In system, the lubricating oil in compressor 2 bottom oil sumps 4 is also simultaneously by oil equalizing pipe road 7 simultaneouslyDischarge compressor 2, make equal oily flow larger, realize fast all oil; Start and work as compressor 2When oil-poor, 8 of return lines are communicated with compressor 2 bottom oil sumps 4, from compressor 2 topsThe lubricating oil that oil sump refluxes is all transported in oil sump 4 rapidly, and bottom oil sump 4 is lubricatedOil now cannot be discharged by oil equalizing pipe road 7, ensures that oil sump 4 oil levels can arrive rapidly default oilPosition.
Therefore the oil level that, the fuel level sensor 3 in embodiment as shown in Figure 1, 2 can be set is highDegree should be not less than the arrival end 71 on the oil equalizing pipe road 7 of compressor, and the oil level of fuel level sensor 3 is highDegree design load is higher, and in the equal oil condition of return line 8 evening of compressor 2, oil return state early.
In embodiment as shown in Figure 1, 2, arrival end 81 and the compressor 2 of return line 8The access of top oil sump can be in the top oil sump of sealing access compressor 2, on compressor 2Lubricating oil in portion's oil sump is not revealed in the time of arrival end 81 place by return line 8, this companyThe state of connecing can make the lubricating oil in compressor 2 top oil sumps have backflow efficiency height and exhaust band oilFew feature, also can be arranged in arrival end 81 places of return line 8 by compressor 2 inwallsOn face, offer draining hole, make lubricating oil in the oil sump of top enter the arrival end 81 of return line 8Rear shunting, a part continues to reflux by return line 8, and another part is from draining hole along compressionMachine 2 inwalls flow down, and are back to compressor 2 by gap between motor stator and compressor 2 inwallsBottom oil sump 4, this part shunting lubricating oil is used for playing the effect of part cooling motor.
Fig. 3 shows another embodiment, and the difference of itself and the first embodiment is, by establishingPut outside liquid collecting tank 11 and replace magnetic valve 6 and the fuel level sensor 3 in the first embodiment, thisIn described liquid collecting tank 11 version as shown in Figure 5, particularly, liquid collecting tank 11 upperTermination has return line 8, and return line 8 is inserted into the bottom of liquid collecting tank 11 always; Liquid collecting tank11 lower end is communicated with compressor 2 bottom oil sumps 4 by liquid collecting tank return line 12, for inciting somebody to actionLubricating oil in the middle of liquid collecting tank 11 is back in compressor 2 bottom oil sumps 4; Liquid collecting tank 11 is pacifiedBe contained in oil equalizing pipe road 7, the arrival end on oil equalizing pipe road 7 71 be connected with oil equalizing pipe road 7,Wherein, each pipeline caliber: d71 (diameter of the arrival end 71 on oil equalizing pipe road 7)=d8 (oil returnThe diameter of pipeline 8) < d12 (diameter of liquid collecting tank return line 12) < d7 (oil equalizing pipe road 7Diameter), the setting height(from bottom) of the arrival end 71 on oil equalizing pipe road 7 and compressor 2 bottom oil sumps 4Default level height is consistent. When the lubricant level in compressor 2 bottom oil sumps 4 is higher than equal oilThe arrival end 71 (lubricating oil starts to be collected in compressor 2 bottom oil sumps 4) of pipeline 7, thisTime lubricant level height in liquid collecting tank 11 also higher than the height on oil equalizing pipe road 7, oil equalizing pipe road7 the lubricated oil sealing in one end closes, and the other end is in high speed exhaust state, due to two ends gas velocityDegree difference cause oil equalizing pipe road 7 two ends form pressure reduction, under the effect of pressure reduction by liquid collecting tank 11Be communicated with the interior unnecessary lubricating oil of compressor 2 bottom oil sump 4 and be transported in gas exhaust piping 9, untilThe level height of compressor 2 bottom oil sumps 4 is lower than the arrival end 71 on oil equalizing pipe road 7, now,Lubricating oil in compressor 2 can not be discharged by oil equalizing pipe road 7. As Fig. 3 and Fig. 6 arrow instituteShow, by adopting the equal oil/displacement configuration of liquid collecting tank 11 of the present embodiment, when 2 ends of compressorThe oil level of portion's oil sump 4 during higher than default oil level, under the effect of oil equalizing pipe road 7 interior pressure reduction, is pressedLubricating oil 13 in contracting machine 2 bottom oil sumps 4 is by arrival end 71, the liquid collecting tank on oil equalizing pipe road 7Return line 12 is inhaled into liquid collecting tank 11, the lubricating oil 13 refluxing in compressor 2 top oil sumpsEnter liquid collecting tank 11 by return line 8, the lubricated oil equalizing pipe that all passes through in final liquid collecting tank 11Discharge on road 7. Like this, under the effect of oil equalizing pipe road 7 two ends pressure reduction, by liquid collecting tank 11 fromThe lubricating oil that compressor 2 bottom oil sumps 4 and top oil sump flow into is discharged compressor 2 in time, due toThe arrival end 71 on oil equalizing pipe road 7 can flow into path by You San road lubricating oil 13 by liquid collecting tank 11Discharge, increased equal oil quality flow.
As Fig. 4 with as shown in Fig. 7 arrow, when the oil level of compressor 2 bottom oil sumps 4 is lower than allWhen the arrival end 71 of oil pipe line 7, first compressor 2 bottom oil sumps 4 disconnect with oil equalizing pipe road 7,Lubricating oil in the oil sump 4 of bottom can not be discharged by oil equalizing pipe road 7, meanwhile, in liquid collecting tank 11Lubricant level height now also can be lower than oil equalizing pipe road 7 and compressor 2 bottom oil sump 4 oil levelsBe consistent, the lubricating oil refluxing by return line 8 can not be discharged by oil equalizing pipe road 7,The lubricating oil that compressor 2 top oil sumps reflux passes through liquid collecting tank return line in liquid collecting tank 11 bottoms12 are back in the oil sump of compressor bottom, like this, and the profit in compressor bottom oil sump and liquid collecting tankLubricating oil cannot enter oil equalizing pipe, and reflux by return duct lubricated now by liquid collecting tank energy andTime be back to compressor bottom oil sump, in time make up compressor bottom oil sump capacity.
Embodiments of the invention are only the descriptions that the preferred embodiment of the present invention is carried out, notDesign of the present invention and scope are limited, are not departing under the prerequisite of design philosophy of the present invention,Various modification and improvement that in this area, engineers and technicians make technical scheme of the present invention,All should fall into protection scope of the present invention, the technology contents of request protection of the present invention, wholeBe documented in claims.
Claims (9)
1. a compressor, comprises return line (8) and oil equalizing pipe road (7), described equal oilThe arrival end (71) of pipeline (7) is connected to the bottom oil sump (4) that is arranged in described compressor,The arrival end (81) of described return line (8) is connected to the oil return of described compressor top oil sumpMouthful, in the described bottom of described compressor oil sump (4), there is default oil level; It is characterized in that,
Described compressor also comprises with described oil equalizing pipe road (7) and described return line (8) equalThe oil-way switching apparatus connecting, described oil-way switching apparatus has in described bottom oil sump (4)Oil level is during higher than described default oil level, make oil return in described return line (8) flow to described allThe equal oil condition of oil pipe line (7); And, in described bottom oil sump (4) oil level lower than orWhile equaling described default oil level, make the oil return in described return line (8) flow to described bottom oilThe oil return state in pond (4).
2. compressor according to claim 1, is characterized in that, described oil circuit switches dressPut and also comprise magnetic valve (6), equal oil end tube connector (5) and oil sump end tube connector (51);
The port of export of described return line (8) is connected with the entrance of described magnetic valve (6);
The first outlet of the first end of described equal oil end tube connector (5) and described magnetic valve (6)Be connected, the second end of described equal oil end tube connector (5) is communicated with described oil equalizing pipe road (7);
The second outlet of the first end of described oil sump end tube connector (51) and described magnetic valve (6)Be connected, described oil sump end tube connector (51) second ends are communicated with described bottom oil sump (4).
3. compressor according to claim 1 and 2, is characterized in that, in described compressionIn the described bottom oil sump (4) of machine, be provided with fuel level sensor (3), described fuel level sensor (3)Be arranged on the height of described default oil level.
4. compressor according to claim 3, is characterized in that, described default oil levelHighly be not less than the height of the arrival end (71) on described oil equalizing pipe road (7).
5. compressor according to claim 4, is characterized in that, described compressor also wrapsDraw together the gas exhaust piping (9) that is positioned at described compressor top, the port of export on described oil equalizing pipe road (7)(72) be connected with described gas exhaust piping (9).
6. compressor according to claim 1, is characterized in that, described oil circuit switches dressPut and comprise liquid collecting tank (11);
It is upper that described liquid collecting tank (11) is connected on described oil equalizing pipe road (7), and by described oil equalizing pipeThe arrival end (71) on road (7) is connected with described oil equalizing pipe road (7);
The upper end of described liquid collecting tank (11) is connected with described return line (8), described liquid collectingThe lower end of tank (11) is communicated with described bottom oil sump (4) by liquid collecting tank return line (12).
7. compressor according to claim 6, is characterized in that,
Described return line (8) extends to described liquid collecting tank from the upper end of described liquid collecting tank (11)(11) bottom.
8. according to the compressor described in claim 6 or 7, it is characterized in that described oil equalizing pipeThe height of the height of the arrival end (71) on road (7) and the described default oil level of described oil sump (4)Degree is consistent.
9. compressor according to claim 8, is characterized in that, described oil equalizing pipe road (7)The diameter < described liquid collecting tank return duct of diameter=described return line (8) of arrival end (71)The diameter on diameter < described oil equalizing pipe road (7) on road (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520935290.9U CN205260257U (en) | 2015-11-20 | 2015-11-20 | Compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520935290.9U CN205260257U (en) | 2015-11-20 | 2015-11-20 | Compressor |
Publications (1)
| Publication Number | Publication Date |
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| CN205260257U true CN205260257U (en) | 2016-05-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520935290.9U Withdrawn - After Issue CN205260257U (en) | 2015-11-20 | 2015-11-20 | Compressor |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105422419A (en) * | 2015-11-20 | 2016-03-23 | 珠海格力节能环保制冷技术研究中心有限公司 | Compressor and oil-return switching method |
| CN107747544A (en) * | 2017-11-07 | 2018-03-02 | 苏州英华特涡旋技术有限公司 | A kind of compressor with oil equalizing pipe, parallel compressor group and oily method |
| CN113735050A (en) * | 2021-09-16 | 2021-12-03 | 深圳市风行趋势科技有限公司 | Automatic oil discharge detection system of gas station |
-
2015
- 2015-11-20 CN CN201520935290.9U patent/CN205260257U/en not_active Withdrawn - After Issue
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105422419A (en) * | 2015-11-20 | 2016-03-23 | 珠海格力节能环保制冷技术研究中心有限公司 | Compressor and oil-return switching method |
| CN105422419B (en) * | 2015-11-20 | 2017-11-10 | 珠海格力节能环保制冷技术研究中心有限公司 | A kind of compressor and oil return switching method |
| CN107747544A (en) * | 2017-11-07 | 2018-03-02 | 苏州英华特涡旋技术有限公司 | A kind of compressor with oil equalizing pipe, parallel compressor group and oily method |
| WO2019091126A1 (en) * | 2017-11-07 | 2019-05-16 | 苏州英华特涡旋技术有限公司 | Compressor with oil balancing pipe, parallel-type compressor unit, and oil balancing method |
| CN107747544B (en) * | 2017-11-07 | 2019-07-09 | 苏州英华特涡旋技术有限公司 | A kind of compressor with oil equalizing pipe, parallel compressor group and oily method |
| US11598562B2 (en) | 2017-11-07 | 2023-03-07 | Suzhou Invotech Scroll Technologies Co., Ltd. | Compressor with oil equalizing pipe, parallel compressor set, and oil equalizing method |
| CN113735050A (en) * | 2021-09-16 | 2021-12-03 | 深圳市风行趋势科技有限公司 | Automatic oil discharge detection system of gas station |
| CN113735050B (en) * | 2021-09-16 | 2023-08-25 | 深圳市风行趋势科技有限公司 | Automatic oil discharge detection system for gas station |
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Legal Events
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160525 Effective date of abandoning: 20171110 |