CN104879306A - Centrifugal compressor - Google Patents
Centrifugal compressor Download PDFInfo
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- CN104879306A CN104879306A CN201510240108.2A CN201510240108A CN104879306A CN 104879306 A CN104879306 A CN 104879306A CN 201510240108 A CN201510240108 A CN 201510240108A CN 104879306 A CN104879306 A CN 104879306A
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- centrifugal compressor
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Abstract
The invention discloses a centrifugal compressor. The centrifugal compressor comprises an electric motor, wherein the electric motor comprises a rotary shaft, a rotor, a stator, a shell part, an end cover and a bearing; one end of the side part of the end cover is provided with a side inlet and an outer inlet; the other end of the side part of the end cover is provided with a side outlet and an inner outlet; centrifugal compression parts, which are symmetrically arranged at both sides of the electric motor; each of the centrifugal compression part comprises a gas collector, a pressure expander, an impeller, an impeller cover and a sealing cover; the inner part of the pressure expander is provided with a gas inlet, and the outer wall of the pressure expander is provided with a gas outlet; the inner wall of the gas collector and the outer wall of the pressure expander are formed to be a worm cavity. The centrifugal compressor provided by the invention can realize the Freon cooling and Freon oil mist lubrication of the bearing; through symmetrically arranging the centrifugal compression parts at both sides of the electric motor, the axial force of the rotary shaft in high-speed running can be effectively eliminated.
Description
Technical field
The present invention relates to Compressor Technology field, particularly a kind of centrifugal compressor.
Background technique
At present, the centrifugal compressor of air-conditioning or refrigerator generally adopts super high speed motor, its rotating speed is more than 10000r/min, and the bearing performance of super high speed motor and super high speed motor are inseparable, its lubricating system adopts grease lubrication usually, oil-air lubrication, lubricate under jet lubrication and ring, the maintenance workload of existing cooling and lubricating system is large, and the working life of motor bearings and motor is generally not long, in High Speed System, bear long playing bearing be generally only 6 ~ 12 months working life, and the rotating shaft of centrifugal compressor can produce an axial force when running up, totally unfavorable during its normal operation to centrifugal compressor, serious then can be accidents caused.
Summary of the invention
For the deficiency existed in above-mentioned technology, the invention provides a kind of centrifugal compressor, it can carry out efficient Cooling and Lubricator fast to bearing, to improve bearing and motor working life, and effectively can eliminate the axial force that rotating shaft produces when running up.
The technical solution used in the present invention is: a kind of centrifugal compressor, comprise: motor, it comprise rotating shaft, the rotor be embedded in described rotating shaft, be placed on described epitrochanterian stator, the shell portion be placed on described stator, the end cap being symmetricly set in both sides, described shell portion, be embedded at described end cap center and the bearing be placed in described rotating shaft; Centrifugal compressed portion, it is symmetricly set in the both sides of described motor, described centrifugal compressed portion comprises the gas-collecting device arranged of fitting with described end cap, the Diffuser being arranged at described gas-collecting device inside, it is inner and be embedded at impeller in described rotating shaft, the impeller cover that is equipped with described impeller, be sealed in described gas-collecting device and be placed on the sealing cover in described rotating shaft to be arranged at described Diffuser, the inwall of described Diffuser offers suction port, the outer wall of described Diffuser offers air outlet, and the inwall of described gas-collecting device and the outer wall of described Diffuser are formed with snail chamber; Wherein, the outside of described end cap and bearing and described gas-collecting device and sealing cover are formed with outer receiving cavity, inner side and the shell portion of described end cap and bearing are formed with interior receiving cavity, the outer import that sidepiece one end of described end cap offers side-entrance and is connected with described side-entrance, described outer import and described outer receiving cavity are connected, the sidepiece the other end of described end cap offers side outlet and the inner outlet with the mutual UNICOM of described side outlet, and described inner outlet and described interior receiving cavity are connected.
Preferably, the sidepiece of described gas-collecting device is linked with bend pipe, and the tangent setting of outer wall of described bend pipe and described gas-collecting device, the sidepiece of described gas-collecting device also offers oil outlet, and described oil outlet is positioned at the side of described bend pipe.
Preferably, the arranged outside of described impeller cover has suction protecting cover, and described suction protecting cover and described impeller are coaxially arranged.
Preferably, described suction port is ellipticity, the rounded shape in described air outlet, and the sectional area of described air outlet is greater than the sectional area of described suction port.
Preferably, described end cap also offers oil overflow hole, described oil overflow hole is positioned at the side of described inner outlet, and one end and the described outer receiving cavity of described oil overflow hole are connected, and the other end and the described interior receiving cavity of described oil overflow hole are connected.
Preferably, described shell portion comprises and is placed on interior valve jacket on described stator and is placed on the casing that described inner casing puts, the outer wall of described casing offers inlet hole and portals, described inner casing puts and offers spiral chute, described inlet hole is corresponding with described spiral fluted inlet side to be arranged, described in portal and go out to hold corresponding setting with described spiral fluted.
Preferably, described casing offers outer string holes, described inner casing puts and offers interior string holes, and described outer string holes is corresponding with described interior string holes coaxially to be arranged.
Preferably, the arranged outside of described bearing has positioning part, and described positioning part comprises and is arranged at fixing outer ring outside described bearing, fits in the back-up ring outside described bearing, the locking nut be resisted against on described back-up ring.
Preferably, described side-entrance and described side outlet are coaxially arranged mutually.
The present invention compared with prior art, its beneficial effect is: centrifugal compressor provided by the invention, by Freon gas being passed into the side-entrance of end cap, Freon gas enters outer receiving cavity by outer import, and sufficient lubrication and cooling are carried out to bearing, again successively through interior receiving cavity, inner outlet and side outlet pass-out, to realize cooling and freon oil mist lubrication the freon of bearing; By offering the oil overflow hole with outer receiving cavity and the equal UNICOM of interior receiving cavity on end cap, play the effect of oily balance port, effectively to prevent chamber inner product stream; By centrifugal compressed portion being symmetricly set in the both sides of motor, the axial force that rotating shaft produces when running up effectively can be eliminated; This centrifugal compressor is safe and reliable, maintenance period is long, the working life of bearing can reach 8 ~ 10 years.
Accompanying drawing explanation
Fig. 1 is the structural representation of centrifugal compressor of the present invention;
Fig. 2 is the sectional view of centrifugal compressor of the present invention;
Fig. 3 is the enlarged diagram of B in Fig. 2;
Fig. 4 is the structural representation of Diffuser of the present invention;
Fig. 5 is the sectional view of the motor described in invention;
Fig. 6 is the enlarged diagram of A in Fig. 5;
Fig. 7 is the structural representation of motor of the present invention;
Fig. 8 is the structural representation of motor of the present invention;
Fig. 9 is the structural representation of interior valve jacket of the present invention;
Figure 10 is the structural representation of end cap of the present invention;
Figure 11 is the structural representation of end cap of the present invention;
Figure 12 is the sectional view of end cap of the present invention;
In figure: 01 casing; 011 inlet hole; 012 portals; 013 outer string holes; Valve jacket in 02; 021 spiral chute; 022 inlet side; 023 goes out end; String holes in 024; 03 stator; 04 rotor; 05 rotating shaft; 06 bearing; 07 fixing outer ring; 08 end cap; 081 side-entrance; 082 outer import; 083 side outlet; 084 inner outlet; 085 oil overflow hole; 09 back-up ring; 10 locking nuts; Receiving cavity in 11; 12 outer receiving cavities; 13 gas-collecting devices; 131 oil outlets; 14 Diffusers; 141 air outlets; 142 suction ports; 15 impeller covers; 16 impellers; 17 sealing covers; 18 inhale protecting cover; 19 snail chambeies; 20 bend pipes.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail, can implement according to this with reference to specification word to make those skilled in the art.
As shown in Fig. 1-3, the invention provides a kind of centrifugal compressor, comprising:
Motor (as Suo Shi Fig. 5-8), it comprises rotating shaft 05, be embedded at the rotor 04 in described rotating shaft 05, be placed on the stator 03 on described rotor 04, be placed on the shell portion on described stator 03, be symmetricly set in the end cap 08 of both sides, described shell portion, be embedded at the center of described end cap 08 and the bearing 06 be placed in described rotating shaft 05, described shell portion comprises the interior valve jacket 02 be placed on described stator 03 and the casing 01 be placed on described interior valve jacket 02, described interior valve jacket 02 adopts Spielpassung with described casing 01, the outer wall of described casing 01 offers inlet hole 011 and portals 012, described interior valve jacket (as shown in Figure 9) 02 offers spiral chute 021, described inlet hole 011 is corresponding with the inlet side 022 of described spiral chute 021 to be arranged, described portal 012 with described spiral chute 021 go out that end 023 is corresponding to be arranged, described casing 01 offers outer string holes 013, described interior valve jacket 02 offers interior string holes 024, described outer string holes 013 is corresponding with described interior string holes 024 coaxially to be arranged, for the outlet of power line, the arranged outside of described bearing 06 has positioning part, described positioning part comprises the fixing outer ring 07 be arranged at outside described bearing 06, fit in the back-up ring 09 outside described bearing 06, be resisted against the locking nut 10 on described back-up ring 09,
Centrifugal compressed portion, it is symmetricly set in the both sides of described motor, described centrifugal compressed portion comprises the gas-collecting device 13 arranged of fitting with described end cap 08, be arranged at the Diffuser 14 of described gas-collecting device 13 inside, be arranged at described Diffuser 14 inside and the impeller 16 be embedded in described rotating shaft 05, the impeller cover 15 be equipped with described impeller 16, be sealed in described gas-collecting device 13 and be placed on the sealing cover 17 in described rotating shaft 05, the sidepiece of described gas-collecting device 13 is linked with bend pipe 20, the tangent setting of outer wall of described bend pipe 20 and described gas-collecting device 13, the sidepiece of described gas-collecting device 13 also offers oil outlet 131, described oil outlet 131 is positioned at the side of described bend pipe 20, the arranged outside of described impeller cover 15 has inhales protecting cover 18, described suction protecting cover 18 is coaxially arranged with described impeller 16, the inwall of described Diffuser 14 (as shown in Figure 4) offers suction port 142, the outer wall of described Diffuser 14 offers air outlet 141, described suction port 142 is in ellipticity, the rounded shape in described air outlet 141, the sectional area of described air outlet 141 is greater than the sectional area of described suction port 142, the inwall of described gas-collecting device 13 and the outer wall of described Diffuser 14 are formed with snail chamber 19,
Wherein, the outside of described end cap 08 and bearing 06 and described gas-collecting device 13 and sealing cover 17 are formed with outer receiving cavity 12, the inner side of described end cap 08 and bearing 06 and shell portion are formed with interior receiving cavity 11, sidepiece one end of described end cap (as Suo Shi Figure 10-12) 08 offer side-entrance 081 and with as described in the outer import 082 that is connected of side-entrance 081, described outer import 082 is connected with described outer receiving cavity 12, the sidepiece the other end of described end cap 08 offers and the described side-entrance 081 coaxial side outlet 083 that arranges and the inner outlet 084 with the mutual UNICOM of described side outlet 083 mutually, described inner outlet 084 is connected with described interior receiving cavity 11, described end cap 08 also offers oil overflow hole 085, described oil overflow hole 085 is positioned at the side of described inner outlet 084, one end and the described outer receiving cavity 12 of described oil overflow hole 085 are connected, the other end and the described interior receiving cavity 11 of described oil overflow hole 085 are connected.
The working principle of this centrifugal compressor is as follows: the gas of low-temp low-pressure axially enters the intakeport formed by suction protecting cover 18, and enter the impeller 16 being driven High Rotation Speed by rotating shaft 05 equably, gas is under the blade effect of impeller 16, High Rotation Speed is done with impeller 16, and due to the effect by rotary centrifugal force, diffusion flowing is done in blade conduit, thus obtain high temperature, high pressure and gas at a high speed, the Diffuser 14 that sectional area expands gradually is entered again by impeller 16 effluent air, the speed of gas is reduced, pressure is further enhanced, after Diffuser 14, pressurized gas are all pooled in volute casing 19, be connected in condenser or interstage cooler through bend pipe 20 again.Centrifugal compressor provided by the invention, by freon liquid being passed into the inlet hole 011 of casing 01, what on interior valve jacket 02, the inlet side 022 of spiral chute 021 flow to spiral chute 021 goes out end 023, and the heat produced when being run by motor by evaporation 012 to be taken out of from portalling of casing 01, thus effectively fast cooling is carried out to motor; By Freon gas being passed into the side-entrance 081 of end cap 08, Freon gas enters outer receiving cavity 12 by outer import 082, and sufficient lubrication and cooling are carried out to bearing 06, again successively through interior receiving cavity 11, inner outlet 084 and side outlet 083 pass-out, to realize cooling and freon oil mist lubrication the freon of bearing 06; By offering the oil overflow hole 085 with outer receiving cavity 12 and the equal UNICOM of interior receiving cavity 11 on end cap 08, play the effect of oily balance port, effectively to prevent chamber inner product stream; By centrifugal compressed portion being symmetricly set in the both sides of motor, the axial force that rotating shaft 05 produces when running up effectively can be eliminated; This centrifugal compressor is safe and reliable, maintenance period is long, the working life of bearing can reach 8 ~ 10 years.
Although embodiment of the present invention are open as above, but it is not limited in listed in specification and mode of execution utilization, it can be applied to various applicable the field of the invention completely, for those skilled in the art, can easily realize other amendment, therefore do not deviating under the universal that claim and equivalency range limit, the present invention is not limited to specific details and illustrates here and the legend described.
Claims (9)
1. a centrifugal compressor, is characterized in that, comprising:
Motor, it comprises rotating shaft, the rotor be embedded in described rotating shaft, be placed on described epitrochanterian stator, the shell portion be placed on described stator, the end cap being symmetricly set in both sides, described shell portion, be embedded at described end cap center and the bearing be placed in described rotating shaft;
Centrifugal compressed portion, it is symmetricly set in the both sides of described motor, described centrifugal compressed portion comprises the gas-collecting device arranged of fitting with described end cap, the Diffuser being arranged at described gas-collecting device inside, it is inner and be embedded at impeller in described rotating shaft, the impeller cover that is equipped with described impeller, be sealed in described gas-collecting device and be placed on the sealing cover in described rotating shaft to be arranged at described Diffuser, the inwall of described Diffuser offers suction port, the outer wall of described Diffuser offers air outlet, and the inwall of described gas-collecting device and the outer wall of described Diffuser are formed with snail chamber;
Wherein, the outside of described end cap and bearing and described gas-collecting device and sealing cover are formed with outer receiving cavity, inner side and the shell portion of described end cap and bearing are formed with interior receiving cavity, the outer import that sidepiece one end of described end cap offers side-entrance and is connected with described side-entrance, described outer import and described outer receiving cavity are connected, the sidepiece the other end of described end cap offers side outlet and the inner outlet with the mutual UNICOM of described side outlet, and described inner outlet and described interior receiving cavity are connected.
2. centrifugal compressor as claimed in claim 1, it is characterized in that, the sidepiece of described gas-collecting device is linked with bend pipe, the tangent setting of outer wall of described bend pipe and described gas-collecting device, the sidepiece of described gas-collecting device also offers oil outlet, and described oil outlet is positioned at the side of described bend pipe.
3. centrifugal compressor as claimed in claim 1, it is characterized in that, the arranged outside of described impeller cover has suction protecting cover, and described suction protecting cover and described impeller are coaxially arranged.
4. centrifugal compressor as claimed in claim 1, it is characterized in that, described suction port is ellipticity, the rounded shape in described air outlet, and the sectional area of described air outlet is greater than the sectional area of described suction port.
5. centrifugal compressor as claimed in claim 1, it is characterized in that, described end cap also offers oil overflow hole, and described oil overflow hole is positioned at the side of described inner outlet, one end and the described outer receiving cavity of described oil overflow hole are connected, and the other end and the described interior receiving cavity of described oil overflow hole are connected.
6. centrifugal compressor as claimed in claim 1, it is characterized in that, described shell portion comprises and is placed on interior valve jacket on described stator and is placed on the casing that described inner casing puts, the outer wall of described casing offers inlet hole and portals, described inner casing puts and offers spiral chute, described inlet hole is corresponding with described spiral fluted inlet side to be arranged, described in portal and go out to hold corresponding setting with described spiral fluted.
7. centrifugal compressor as claimed in claim 6, it is characterized in that, described casing offers outer string holes, described inner casing puts and offers interior string holes, and described outer string holes is corresponding with described interior string holes coaxially to be arranged.
8. centrifugal compressor as claimed in claim 1, it is characterized in that, the arranged outside of described bearing has positioning part, and described positioning part comprises and is arranged at fixing outer ring outside described bearing, fits in the back-up ring outside described bearing, the locking nut be resisted against on described back-up ring.
9. centrifugal compressor as claimed in claim 1, it is characterized in that, described side-entrance and described side outlet are coaxially arranged mutually.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510240108.2A CN104879306B (en) | 2015-05-13 | 2015-05-13 | A kind of centrifugal compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510240108.2A CN104879306B (en) | 2015-05-13 | 2015-05-13 | A kind of centrifugal compressor |
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| Publication Number | Publication Date |
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| CN104879306A true CN104879306A (en) | 2015-09-02 |
| CN104879306B CN104879306B (en) | 2017-03-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510240108.2A Active CN104879306B (en) | 2015-05-13 | 2015-05-13 | A kind of centrifugal compressor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107002695A (en) * | 2014-12-03 | 2017-08-01 | 罗伯特·博世有限公司 | Compressor with sealing passage |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040179947A1 (en) * | 2002-12-19 | 2004-09-16 | R & D Dynamics Corporation | Motor driven two-stage centrifugal air-conditioning compressor |
| CN1633561A (en) * | 2001-04-23 | 2005-06-29 | 艾略特涡轮机械公司 | Multi-stage centrifugal compressor |
| CN1639466A (en) * | 2002-02-28 | 2005-07-13 | 特伯考尔公司 | A centrifugal compressor |
| US20070189905A1 (en) * | 2006-02-13 | 2007-08-16 | Ingersoll-Rand Company | Multi-stage compression system and method of operating the same |
| DE112012002901T5 (en) * | 2011-08-24 | 2014-04-24 | Borgwarner Inc. | Air supply device for a fuel cell |
| CN204716562U (en) * | 2015-05-13 | 2015-10-21 | 苏州庆瑞空气***有限公司 | A kind of centrifugal compressor |
-
2015
- 2015-05-13 CN CN201510240108.2A patent/CN104879306B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1633561A (en) * | 2001-04-23 | 2005-06-29 | 艾略特涡轮机械公司 | Multi-stage centrifugal compressor |
| CN1639466A (en) * | 2002-02-28 | 2005-07-13 | 特伯考尔公司 | A centrifugal compressor |
| US20040179947A1 (en) * | 2002-12-19 | 2004-09-16 | R & D Dynamics Corporation | Motor driven two-stage centrifugal air-conditioning compressor |
| US20070189905A1 (en) * | 2006-02-13 | 2007-08-16 | Ingersoll-Rand Company | Multi-stage compression system and method of operating the same |
| DE112012002901T5 (en) * | 2011-08-24 | 2014-04-24 | Borgwarner Inc. | Air supply device for a fuel cell |
| CN204716562U (en) * | 2015-05-13 | 2015-10-21 | 苏州庆瑞空气***有限公司 | A kind of centrifugal compressor |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107002695A (en) * | 2014-12-03 | 2017-08-01 | 罗伯特·博世有限公司 | Compressor with sealing passage |
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| CN104879306B (en) | 2017-03-08 |
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| C41 | Transfer of patent application or patent right or utility model | ||
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Effective date of registration: 20151230 Address after: 215000 Longshan Industrial Park, No. 28, Xin Xin Road, Dong Zhu Town, Suzhou hi tech Zone, Jiangsu, 19 Applicant after: SUZHOU LANGJI TECHNOLOGY Co.,Ltd. Address before: 215000 No. 98 Heng Shan Road, hi tech Zone, Jiangsu, Suzhou Applicant before: SUZHOU QINGRUI AIR SYSTEM Co.,Ltd. |
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Effective date of registration: 20230413 Address after: Building 3, No. 58 Tongxin Road, Tong'an Town, High tech Zone, Suzhou City, Jiangsu Province, 215011 Patentee after: Suzhou Yanjitong New Energy Technology Co.,Ltd. Address before: Building 19, Longshan Industrial Park, No. 28 Xiexin Road, Dongzhu Town, Suzhou High tech Zone Patentee before: SUZHOU LANGJI TECHNOLOGY Co.,Ltd. |
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