CN1482365A - Vorticity compression pump - Google Patents
Vorticity compression pump Download PDFInfo
- Publication number
- CN1482365A CN1482365A CNA03137820XA CN03137820A CN1482365A CN 1482365 A CN1482365 A CN 1482365A CN A03137820X A CNA03137820X A CN A03137820XA CN 03137820 A CN03137820 A CN 03137820A CN 1482365 A CN1482365 A CN 1482365A
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- seal container
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- 230000006835 compression Effects 0.000 title claims 10
- 238000007906 compression Methods 0.000 title claims 10
- 239000003921 oil Substances 0.000 claims abstract description 107
- 230000007246 mechanism Effects 0.000 claims description 11
- 239000003795 chemical substances by application Substances 0.000 claims description 9
- 239000003507 refrigerant Substances 0.000 claims description 9
- 238000005057 refrigeration Methods 0.000 claims description 9
- 238000003825 pressing Methods 0.000 claims description 7
- 238000007599 discharging Methods 0.000 claims description 6
- 235000015927 pasta Nutrition 0.000 claims description 5
- 239000000446 fuel Substances 0.000 claims description 4
- 238000004891 communication Methods 0.000 claims description 3
- 230000008676 import Effects 0.000 claims description 3
- 238000007598 dipping method Methods 0.000 claims 2
- 239000000659 freezing mixture Substances 0.000 claims 1
- 239000002023 wood Substances 0.000 claims 1
- 239000003595 mist Substances 0.000 abstract description 19
- 208000028659 discharge Diseases 0.000 abstract 3
- 239000010687 lubricating oil Substances 0.000 abstract 1
- 239000010721 machine oil Substances 0.000 abstract 1
- 239000010705 motor oil Substances 0.000 abstract 1
- 238000000638 solvent extraction Methods 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 25
- 239000011347 resin Substances 0.000 description 6
- 229920005989 resin Polymers 0.000 description 6
- 239000002184 metal Substances 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000009977 dual effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 239000011253 protective coating Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000005119 centrifugation Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000012809 cooling fluid Substances 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 238000009795 derivation Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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- Rotary Pumps (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
- Motor Or Generator Frames (AREA)
Abstract
Provided is a scroll compressor in which spillage of refrigerating machine oil into external cycle is reduced in low cost and assumable service condition range. The scroll compressor applies extreme flow rate differences to oil which has been mixed into discharge gas in the form of mist by making the oil flow in into a large cross-sectional area passage from a narrow passage at the initial stage of discharge gas circulating route, converts flow direction by using a current transformer, and liquefies and separates the oil mist by making the discharge gas collide with sealed container inner wall. Further, the compressor liquefies and separates oil mist permeating inside an end coil of a motor or lubricating oil flowing in from a bearing by making them collide with an oil cover partitioning outer diameter section (end coil inner diameter of a stator) of the rotor in such a manner that they are led to a rotating portion of a rotor to be applied by centrifugal force.
Description
Technical field
The present invention relates to the turbocompressor of the compresses refrigerant gas of a kind of indoor air conditioner etc.
Background technique
In the running of the compressor for cooling fluid in freeze cycle, the slide part of the sealing gasket of compressing mechanism or bearing etc. lubricated with refrigerator oil in compressing mechanism or by becoming vaporific sneaking in the pressurized gas, or by the gap ejection from bearing, and sneak in the exhaust.Flow in the pipe arrangement of freeze cycle if sneak into the outlet pipe of the compressed machine of exhaust of this vaporific oil, vaporific oil liquify is attached to the inboard of this pipe arrangement.If the pipe arrangement of heat exchanger, the oil that adheres to becomes thermal-protective coating, hinders heat exchange performance, occurs hindering in other pipe arrangements ventilating, produce the pressure loss, making the phenomenons such as heat exchange efficiency reduction of freeze cycle.Prevent that oil from sneaking into row is a big technical task that turns to the air conditioner manufacturer of target with power saving in the exhaust of described pipe arrangement.
Have as traditional technology, the pressurized gas that is mixed with vaporific oil (exhaust) that to discharge from compressing mechanism, pass through the rotor inner gateway of motor halfway, another the current refrigerant gas path that forms through the inner space of over-segmentation seal container, outside seal container, discharge, the centrifugation of utilizing rotor to rotate makes and becomes vaporific refrigerator oil droplet treatment, reduces the technology (for example, referring to patent documentation 1) of sneaking into the refrigerator oil in the pressurized gas.
Patent documentation 1: the spy open the 2002-115686 communique (the 7th page, Fig. 1)
In above-mentioned conventional art, because by the gas passageway in the rotor, the pressure loss is big.In addition, because the operating condition difference, dissolving in of refrigerant gas causes that pasta raises sometimes, will predict that also the instability of mist of oil mixed volume changes.That is, the problem of research is, low-cost and reduce refrigerator oil flow out to outside circuit in the operating condition scope that can suppose.
Summary of the invention
Flow out to outside circuit from seal container in order to reduce mist of oil, for the exhaust that contains mist of oil of discharging from the compressing mechanism tap hole, need be at the early stage when and where of its circulating path, separate mist of oil by liquefaction, change the flow direction of exhaust and the liquefaction oil direction of dripping, reach the purpose that reduces mist of oil.
Description of drawings
Fig. 1 is the sectional drawing of expression one routine turbocompressor structure of the present invention.
Fig. 2 is the E-E sectional drawing of Fig. 1 of the present invention.
Fig. 3 is a routine sectional drawing of expression oil jacket lid of the present invention shape.
Fig. 4 is the sectional drawing of expression one example with the integrally formed current transformer of the present invention of resin with electrical insulating property and anti-refrigeration agent, oil ring circle, oil jacket lid.
Fig. 5 represents that a routine integrally formed current transformer of the present invention of metal and the oil jacket partly used covers, makes up the sectional drawing with the loop portions timesharing of resin material making.
Fig. 6 is that expression one example is covered the sectional drawing when wherein part coats the resin material with electrical insulating property and anti-refrigeration agent with the integrally formed current transformer of the present invention of metal, oil ring circle, oil jacket.
Among the figure:
1 ... seal container, 2 ... compressing mechanism, 3 ... motor, 4 ... bent axle, 5 ... supplementary bearing, 6 ... oil groove, 7 ... supplementary bearing supporting plate, 8 ... the pasta wave inception prevents plate, 9 ... framework, 10 ... rotary turbine, 11 ... crosshead link, 12 ... fixed turbine, 13 ... pressing chamber, 14 ... current transformer, 15 ... oil jacket lid, 16 ... oil ring circle, 17 ... coat tunicle
Embodiment
Below, a mode of execution of using turbocompressor of the present invention is described with reference to Fig. 1～Fig. 6.In Fig. 1, compressing mechanism 2 is configured in the top of seal container 1, and motor 3 is configured in the bottom, connects with bent axle 4 up and down.The stator 3a of motor 3 is fixed on by methods such as hot embeddings among the shell 1a of seal container 1, in addition, and by for example being pressed into the rotor 3b of bent axle 4 fixed motors 3.
Near the central part of the top board 12a of this fixed turbine 12, be provided with gas discharge hole 12e.The cover plate 12b precision machining of the cover plate 10c of rotary turbine 10 and fixed turbine 12 is become the shape (not shown) of scroll, lump together, mutually combine and keep accurate gap mutually, form pressing chamber 13 with the rotating group of the eccentric part 4b of bent axle 4.Near seal container 1 internal diameter, the lip part of framework 9 is fixed on the shell 1a of back the peripheral dimension of the lip part of the lip part of framework 9 and fixed turbine 12 with minimum gap.In addition, in the bottom of the flange of framework 9, be provided with the recess that links to each other and be provided with the outlet pipe 1d of seal container 1.
Periphery at the lip part of the flange of framework 9 and fixed turbine 12 is provided with the pod 9c and the 12c of gas passageway separately of becoming that is interconnected.Under the pod 9c of the framework 9 that is connected with the pod 12c of fixed turbine 12, be provided with gas current transformer 14.This gas current transformer 14 will be transformed into the air-flow of substantially horizontal along the vertical exhaust airstream of falling with 12c of pod 9c.Specifically be, gas current transformer 14 is located in the seal container 1, makes near shell 1a, and shown in Figure 2 as E～E section of Fig. 1 and Fig. 1 is set.
It is space A that the exhaust of discharging near the gas discharge hole 12e the central part of the top board 12a that is arranged on fixed turbine 12 enters the 1st space that forms on the top of fixed turbine 12 and seal container 1.The exhaust of discharging at space A flows into pod 9c and 12c.
In the end coil 3c inboard of stator 3a, insert with the internal diameter of end coil 3c loop portions 15a as the oil jacket lid 15 of external diameter, form space B.In the inboard of space B, comprise the lower central part of framework 9, also comprise bearing 9a.In addition, in space B, there is the top of rotatable rotor 3b.
Between the oil groove 6 of the downside of stator 3a and seal container 1 bottom, form space C.The otch (not shown) of space B and the space C stator 3a by inserting coil and stator 3a shown in Figure 2 are connected with space (space) 3e between rotor 3b.In the C of this space, be equipped with supplementary bearing 5 that the top with bent axle 4 is entrenched togather and supporting plate 7 thereof and pasta wave inception and prevent plate 8.The top of the collar 4a of bent axle 4 is immersed in the oil groove 6 of bottom of seal container 1, and supplementary bearing 5 is entrenched togather with its external diameter, and supplementary bearing 5 is fixed on the shell 1a by supporting plate 7.Refrigerating machines such as indoor air conditioner start during for example in cold in its service condition under the situation such as running heating installation, and refrigerant returns in the seal container in a large number sometimes.At this moment, the pasta in the oil groove 6 raises, and stirs by the rotation of rotor 3b, presents bubblement sometimes, and oil quickens to run off outside seal container 1.Therefore, the external diameter that the oily wave inception that is provided with in the C of space prevents plate 8 is preferably near inwall one side of seal container 1 shell 1a, as shown in Figure 1, preferably 80%～90% of the internal diameter of outer cover size, and blow space 3e under the center of rotation of rotor 3b and the exhaust as far as possible away from the shell 1a inwall of seal container 1.
In addition, between motor 3 and framework 9, be provided with oil ring circle 16, oil ring circle 16 with the roughly external diameter of end coil 3c and along the external diameter of the lip part 15b of the oil jacket lid 15 of the lip part expansion of the framework 9 of below one side among Fig. 1 as its internal diameter.Above stator 3a, this oil ring circle 16 has some gaps, be arranged on and framework 9 between.As external diameter, with the roughly external diameter of the end coil 3c annular shape space D (aforesaid current transformer is configured in space D) as internal diameter, a plurality of hole slot 3d by being provided with in the center of stator 3a periphery are connected with aforesaid space C with shell 1 inwall.
As mentioned above, the turbocompressor of present embodiment is by the desired compressor function of rotation performance of motor 3, oil rises from the oilhole 4c of bent axle 4, and the sealing gasket etc. that reaches the side of cover plate 12b of the cover plate 10c of the top and bottom of backplate 10b of the recess 9b of each selflubricating between the bearing 10a of eccentric part 4b and rotary turbine 10, framework 9 and rotary turbine 10 and rotary turbine 10 and fixed turbine 12 and end face etc., compressing mechanism 2 between the bearing 9a for the axle journal 4a of bent axle 4 and framework 9 locates to offer lubricant oil.
The above-mentioned oil that provides has the route that moves with the flow direction of exhaust gases of representing with solid arrow.At first, the oil of invading pressing chamber becomes vaporific, sneaks in the exhaust, discharges to the space on seal container top A from the tap hole 12e of fixed turbine 12.Subsequently, contain the exhaust of vaporific oil from pod 12c, the 9c of space A, from current transformer inflow space D through fixed turbine 12 and framework 9.And then exhaust is from the below of space D by oil ring circle 16, and the space between the ring 15a of oil ring circle 16 and oil jacket lid 15 flows into to the discharge tube 1d of seal container 1.
In the D of space, the exhaust airstream that gas current transformer 14 provides forms rotating flow along the inwall of shell 1c, in addition, owing to form the structure that space D is communicated with discharge tube 1d by oil ring circle 16, and so behind the abundant droplet treatment of oil, exhaust can be imported discharge tube 1d.
At this moment, if the gap of oil ring circle 16 and end coil 3c is narrow, blow to space between the loop portions 15a of oil ring circle 16 and oil jacket lid 15 from the bottom attached to the unthickened fuel on the end coil 3c, can impel aqueous oil to atomize once more, but, can not make unthickened fuel atomizing even the air-flow in the space D that flow velocity slows down is accelerated its flow velocity, have the stream in the gap that can pass through from oil ring circle 16 belows like this by formation, just can be outside seal container 1 discharging do not contain the exhaust of vaporific oil.
Exhaust enters the big space A of sectional area from the little tap hole 12e of sectional area, and exhaust reduces the exhaust flow velocity when sectional area little pod 12c, 9c enter the big space D of sectional area in addition.As reduce flow velocity, and the mist of oil that density is big liquefies easily, and the oil that has liquefied at space A drips to space D by lip part and the lip part of framework 9 and the gap between the shell 1a of fixed turbine 12.
In addition, after the exhaust of vertically falling from pod 12c, 9c collides the bottom surface 14a of current transformer 14, the steering horizontal direction, the exhaust of flowing out from the opening portion 14b of current transformer 14 collides the inwall of the shell 1a of space D, and the conversion of flow direction of exhaust gases impels mist of oil liquefaction separately.The oil of liquefaction like that, is accompanyed or follow the oil that space A drips shown in hollow arrow, along the inwall of shell 1a, drip to the oil groove 6 of seal container 1 bottom from the hole slot 3d of stator 3a periphery.Then, the most of outlet pipe 1d that imports seal container 1 of fuel-displaced exhaust will be separated.
In addition, a part is through the exhaust of current transformer 14, by the path between above the center of oil ring circle 16 and stator 3a, arrives the inboard of oil jacket lid 15 from space D.This mist of oil by colliding high integrated formation motor winding and liquefy at the rotor 3b of the inboard high speed rotating of oil jacket lid 15, shown in hollow arrow, drip in the oil groove 6 through the opening of stator 3.Wherein a part of exhaust arrives the space C of seal container 1 bottom, subsequently, shown in the solid line arrow, from the hole slot 3d of stator 3a periphery, arrives seal container 1 discharge tube 1d through above-mentioned space D.
On the other hand, oil from the bearing 9a of framework 9 ejection, form aqueous or vaporific, be sprayed onto the inboard of oil jacket lid 15, by colliding the rotor 3b of high speed rotating, utilize centrifugal force to separate highdensity oil content, shown in hollow arrow, drip to the oil groove 6 of seal container 1 bottom by opening from space 3e.
Fig. 2 be the flow direction of exhaust gases vertically fallen from pod 12c, 9c of expression change of the present invention current transformer 14, be arranged on oil ring circle 16 on the external diameter of end coil 3c of stator 3a, be arranged on an example of the shape separately of the oil jacket lid 15 on the internal diameter of end coil 3c of stator 3a.
That is, current transformer 14 shown in Figure 2 is configured in the downside of the pod 9c of framework 9, has the bottom surface 14a of exhaust collision and the opening portion 14b that exhaust is flowed out.
For the downside that makes oil ring circle 16 contacts with common end coil 3c, clamp state with finishing and make cylindric with dielectric film etc. motor.On the top of oil ring circle 16, form on the horizontal cave (not shown) at the end difference of framework 9, suitably opening waits the fixed hole of fixing with rivet (not shown).
In the D of space, gas flows along shell 1a inwall by current transformer 14, and after air-flow was run into inwall, the oil of liquefaction and the gas stream direction that meets at right angles was dripped, and can change gas stream and the oily direction of dripping thus.By the change of this direction, can prevent that the oil that liquefies from atomizing once again.
Fig. 4 has represented to cover with integrally formed current transformer 14, oil ring circle 16, the oil jacket of resin with electrical insulating property and anti-refrigeration agent an example of 15 three elements.At this moment, current transformer 14 ' is located at the position of acceptance from the exhaust of the pod 9c of framework 9, and the air communication that changes direction is crossed in the space D of oil ring circle 16 ' and shell 1a formation, and is mobile along the inwall of shell 1a.
Fig. 5 has represented the lip part 15b with integrally formed current transformer 14 such as sheet metal and oil jacket lid 15, on the part near the end coil 3c of stator 3a, combination is with the motor dielectric film and have electrical insulating property and a loop portions 16 ' that the resin material of anti-refrigeration agent is made and an example of loop portions 15 '.
Fig. 6 represented with integrally formed current transformer 14 such as sheet metal and oil jacket lid 15, an example of the coating tunicle 17 that forms at the downside near the end coil 3c of stator 3a, be made of electrical insulating property with suitable depth and anti-refrigeration agent resin material.
More than, as described in various embodiments of the present invention, by improvement sneak in the exhaust mist of oil and from the peripheral passage of the mist of oil of bearing ejection, the outlet pipe through seal container is minimized to the oil mass of compressor outside drain.
At first,,, arrive by the little pod of sectional area and flow into the big space D of sectional area in case arrive the great space A in cross section from small-bore fixed turbine tap hole from the exhaust of compressing mechanism, can parting liquid carburetion mist in the circulation initial stage of exhaust.The exhaust that arrives space D enters the space that communicates with outlet pipe from the downside of oil jacket lid, by the outlet pipe derivation that externally circulates.
In addition, part leaks into mist of oil contained in the exhaust of stator interior direction and is the oil of lubricating bearings circulation in seal container, isolate with the discharge path of above-mentioned exhaust, or the end coil by stator and insert the close clearance of the rotor etc. of coil, or the rotor of collision high speed rotating, utilize centrifugal force separating oil and gas, the mist of oil liquefaction as far as possible that the space beyond discharge path is suspended.
That is, contain the sectional area of stream of the exhaust of a large amount of mist of oils by increase, reduce its gas flow rate, make the inwall of gas collision seal container, can make the liquefaction of mist of oil high efficiency.In addition, collide the rotor of high speed rotating by what make compressor central part bearing with the less amount of lubrication oil in the vaporific intrusion exhaust, and force additional centrifugal force, positively separating oil.In addition, by separating the path of above-mentioned exhaust really, finally can discharge and to discharge refrigerator oil contained in the gas.
Its result shows, owing to seldom form the oil film that produces the thermal-protective coating and the pressure loss in the pipe arrangement that causes freezing cold-room machines such as indoor air conditioner, can provide the goods of saving electric power.In addition, the wave inception that disposes on oil groove top prevents that plate can be suppressed at certain specific operating condition and issue the oil generation mist, has the effect that improves the goods reliability.
According to the present invention, can reduce the ratio of the refrigerator oil of sneaking in the gas refrigerant of turbocompressor discharge greatly.In addition,, adopt turbocompressor of the present invention, high performance air conditioner can be provided by using as the compressor of air conditioners such as indoor air conditioner.
Claims (6)
1. turbocompressor is characterized in that: have: be configured in the compression mechanical part that connects with bent axle in the seal container and have stator and the motor of rotor, described compression mechanical part is configured in top, and its motor configurations is in the bottom; Be configured in described seal container the bottom the described bent axle of dipping top oil groove and be the oilhole on the described bent axle of being located at of described compressing mechanism fuel feeding, described compression mechanical part have framework, the fixed turbine that is connected with this framework that supports described bent axle and be configured in this fixed turbine and described framework between and assist this fixed turbine to form the rotary turbine of a plurality of pressing chambers; Be configured in described seal container top and from described fixed turbine discharge the 1st space in the gas refrigeration agent of described pressing chamber compression, run through described fixed turbine and described framework and with the access of the 1st spatial communication and with import from this access effluent air refrigerant described sealed container outside is communicated with outlet pipe and along the 2nd space of the inwall setting of described seal container; Have the current transformer that is located in the 2nd space, current transformer have acceptance by the opening portion of described access effluent air refrigerant with to the exhaust port of discharging the gas refrigeration agent from the different direction of the outflow direction of described access.
2. turbocompressor as claimed in claim 1, it is characterized in that: below described framework and between above the end coil of described motor stator, setting is covered with the diameter that approximately equates with the external diameter of described end coil the 1st oil jacket as external diameter, and forms described the 2nd space.
3. turbocompressor is characterized in that: have: be configured in the compression mechanical part that connects with bent axle in the seal container and have stator and the motor of rotor, described compression mechanical part is configured in top, and motor configurations is in the bottom; Be configured in described seal container the bottom the described bent axle of dipping top oil groove and be the oilhole on the described bent axle of being located at of described compression mechanical part fuel feeding, described compression mechanical part have framework, the fixed turbine that is connected with this framework that supports described bent axle and be configured in this fixed turbine and described framework between and assist this fixed turbine to form the rotary turbine of a plurality of pressing chambers; Be configured in described seal container top and from described fixed turbine discharge the 1st space in the gas refrigeration agent of described pressing chamber compression, run through described fixed turbine and described framework and with the access of the 1st spatial communication and with import from access effluent air refrigerant described sealed container outside is communicated with outlet pipe and along the 2nd space of described seal container inwall setting; Have the current transformer that is located in the 2nd space, current transformer have acceptance by the opening portion of described access effluent air refrigerant with to the exhaust port of discharging the gas refrigeration agent from the different direction of the outflow direction of described access; Be arranged on the 3rd space below the described framework and between above the end coil of described motor stator, that constitute by the top of the rotor of the following and described motor of described framework, be provided with the 2nd oil jacket lid in the 3rd space, separate the 3rd space with the 2nd oil jacket lid, the external diameter of the 2nd oil jacket lid approximately equates with the external diameter of described end coil.
4. turbocompressor as claimed in claim 3, it is characterized in that: have by the center downside of described stator and be arranged on the 4th space that the oily storing section of the bottom of described seal container is formed above, interval by described rotor and described stator and the otch that inserts described stator coil are connected the 4th space and described the 3rd space.
5. turbocompressor as claimed in claim 3 is characterized in that: in described the 4th space, be provided with the circular pasta wave inception with outside dimension of 80%～90% with respect to the seal container internal diameter size and prevent plate.
6. as claim 1 or 3 described turbocompressor, it is characterized in that: be the structure that described current transformer, the described the 1st or the 2nd oil jacket lid is connected in whole or in part with resinous wood with electrical insulating property and anti-freezing mixture.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002267539A JP4146693B2 (en) | 2002-09-13 | 2002-09-13 | Scroll compressor |
| JP2002267539 | 2002-09-13 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1482365A true CN1482365A (en) | 2004-03-17 |
| CN1297749C CN1297749C (en) | 2007-01-31 |
Family
ID=32089108
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB03137820XA Expired - Fee Related CN1297749C (en) | 2002-09-13 | 2003-05-21 | Vorticity compression pump |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP4146693B2 (en) |
| CN (1) | CN1297749C (en) |
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| JPS58183883A (en) * | 1982-04-22 | 1983-10-27 | Hitachi Ltd | Enclosed type motor compressor |
| JPS60243389A (en) * | 1984-05-18 | 1985-12-03 | Hitachi Ltd | Closed type scroll compressor |
| JPH0647993B2 (en) * | 1985-11-27 | 1994-06-22 | 株式会社日立製作所 | Hermetic scroll compressor |
| JPH073231B2 (en) * | 1986-12-05 | 1995-01-18 | 株式会社日立製作所 | Hermetic scroll compressor |
| JPS63192974A (en) * | 1987-02-03 | 1988-08-10 | Matsushita Refrig Co | Oil separator of compressor |
| JP2001140779A (en) * | 1999-11-18 | 2001-05-22 | Hitachi Ltd | Scroll compressor |
| JP3931574B2 (en) * | 2000-08-04 | 2007-06-20 | 松下電器産業株式会社 | Hermetic compressor |
| JP3760748B2 (en) * | 2000-09-20 | 2006-03-29 | 株式会社日立製作所 | Hermetic electric compressor |
-
2002
- 2002-09-13 JP JP2002267539A patent/JP4146693B2/en not_active Expired - Fee Related
-
2003
- 2003-05-21 CN CNB03137820XA patent/CN1297749C/en not_active Expired - Fee Related
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Also Published As
| Publication number | Publication date |
|---|---|
| JP2004100662A (en) | 2004-04-02 |
| CN1297749C (en) | 2007-01-31 |
| JP4146693B2 (en) | 2008-09-10 |
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