CN2445502Y - Cold-producing medium cooling three-phase asynchronous motor for centrifugal refrigerator - Google Patents
Cold-producing medium cooling three-phase asynchronous motor for centrifugal refrigerator Download PDFInfo
- Publication number
- CN2445502Y CN2445502Y CN 00244600 CN00244600U CN2445502Y CN 2445502 Y CN2445502 Y CN 2445502Y CN 00244600 CN00244600 CN 00244600 CN 00244600 U CN00244600 U CN 00244600U CN 2445502 Y CN2445502 Y CN 2445502Y
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- refrigerant
- rotating shaft
- motor
- rotor
- centrifugal
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Abstract
The utility model relates to a refrigerant cooling three-phase asynchronous motor for a centrifugal refrigerator. The utility model is characterized in that a cooling medium liquid entering chamber 9 is arranged on a motor and is communicated with a cooling medium static passage which is arranged among a back end cover, a bearing inner cover 11, a rotating shaft and a labyrinth type centrifugal negative pressure seal through a pipeline, and a cooling medium distributing chamber 3 which is arranged at the inverted cone-shaped diameter changing point of a rotating shaft of a diameter changing structure. A rotor iron core is provided with a radial flow passage 5 of a cooling medium and is communicated with the cooling medium distributing chamber 3 through a plurality of deep holes along the axial direction of a rotor. A radial flow passage 4 which is corresponding to the radial flow passage of the rotor iron core is arranged on a stator iron core. The bottom in a motor is provided with an air collecting box 7 for collecting the cooling medium. The utility model has the advantages of refrigerant saving and convenient maintenance and monitoring and makes the motor have small volume, and weight is lighter.
Description
The utility model relates to centrifugal refrierator refrigerant cools threephase asynchronous.
Centrifugal refrierator of the prior art with the cooling structure of threephase asynchronous is: cold-producing medium stretches into the shaft central hole of bearing portion by the tube connector between back end cover for motor and the bearing end cover, enters electric machine rotor iron core.The shortcoming of this structure is to cause the cold-producing medium and the refrigeration oil blend of refrigerating device inner easily, wastes cold-producing medium and refrigeration oil in a large number, and user's machine maintenance expense is increased, and refrigerating capacity descends, even unit is scrapped; In addition, the tube connector between rear end cap and the bearing end cover not only influences outward appearance but also increase sealing part and the length overall of unit, the direction of rotation that also is not easy to observe motor.
The purpose of this utility model provides a kind ofly can save cold-producing medium and refrigeration oil, can reduce motor volume and weight, makes and safeguards and monitor convenient centrifugal refrierator refrigerant cools threephase asynchronous.
Above-mentioned purpose of the present utility model is to realize that by such technical scheme promptly a kind of centrifugal refrierator refrigerant cools threephase asynchronous comprises rear end cap, rotating shaft and sliding bearing thereof, stator core, rotor core; It is characterized in that: the coolant intake chamber that on motor, is provided with, by pipeline and be arranged on rear end cap, internal bearing cover and rotating shaft and the centrifugal negative-pressure sealing of labyrinth type between static channel, be communicated with the refrigerant distributor chamber at the back taper reducing place that is arranged on the variable-diameter structure rotating shaft; The radial flow path that rotor core has a refrigerant is communicated with refrigerant distributor chamber 9 by some deep holes of rotor axial, has the radial flow path corresponding with the rotor core radial flow path on the stator core; Bottom in motor has the plenum chamber of collecting refrigerant.
Said structure of the present utility model can further specify by the embodiment that accompanying drawing provides.
Accompanying drawing is a structural representation of the present utility model.
Referring to accompanying drawing: the refrigerant cools threephase asynchronous of the centrifugal refrierator among the figure comprises rear end cap 12, rotating shaft and sliding bearing thereof, stator core, rotor core; It is characterized in that: the coolant intake chamber 9 that on motor, is provided with, by pipeline and be arranged on rear end cap, internal bearing cover 11 and rotating shaft and the centrifugal negative-pressure sealing of labyrinth type between the refrigerant static channel, be communicated with the refrigerant distributor chamber 3 at the back taper reducing place that is arranged on the variable-diameter structure rotating shaft; The radial flow path 5 that rotor core has a refrigerant is communicated with refrigerant distributor chamber 3 by some deep holes of rotor axial, has the radial flow path corresponding with the rotor core radial flow path 4 on the stator core; Bottom in motor has the plenum chamber 7 of collecting refrigerant.
The above-mentioned centrifugal negative-pressure sealing device of labyrinth type of the utility model is to realize that refrigerant enters the key structure of rotor core from the axle surface, its structure comprises getting rid of oil duct 15, helixseal 14 and the high pressure sealing gland 13 that is communicated with source of the gas by pipeline, be enclosed within guide shell 10 formations in the rotating shaft in the rotating shaft that is set in place in internal bearing cover, wherein the two ends of guide shell respectively with internal bearing cover 11 and with the place's rotating shaft of rotating shaft reverse taper reducing on the refrigerant distributor chamber be that labyrinth sealing connects.
Above-mentioned rotor radial runner 5 of the present utility model has the atomising device that is made of tablet near in the tail end of air gap; The place is provided with the spray thrower 1 that is communicated with coolant intake chamber 3 by pipeline 6 at motor inner-stator iron core end winding; The refrigerant exit 9 of intake chamber 9 of the present utility model and plenum chamber 7 connects with compression set and constitutes the circulatory system of refrigerant.
The course of work of the present utility model is such: refrigerant is sent into intake chamber 9 by the refrigerant compression set, lead up to rear end cap 12, internal bearing cover 11, " the centrifugal negative-pressure sealing of labyrinth type ", refrigerant distributor chamber 3, enter rotor core radial flow path 5,4 pairs of heatings of stator core radial flow path stator and rotor cool off; One the road delivers to spray thrower cools off stator coil end, and all refrigerants are collected by plenum chamber 7 at last, and has external refrigerant compression set to extract out.
The centrifugal negative-pressure sealing of labyrinth type described in the utility model reliably separates refrigerant and lubricating oil by getting rid of oil duct 15-helixseal 14-high pressure sealing gland 13; Refrigerant comes out to enter into the process of rotor core through axle surface, long one section edge from internal bearing cover, owing to be subjected to the drive of rotating shaft high speed rotating, refrigerant not only can not axially flow to rotor core, flies away from because of centrifugal action on the contrary.Solved this difficult problem by internal bearing cover-guide shell-refrigerant distributor chamber.Wherein internal bearing cover 11-guide shell 10 is that rotor, refrigerant distributor chamber are not the parts of rotor, be rotor: the constraint contradiction between the two, " labyrinth gap " that constitute by its mating surface solves, " with the passage that the axle surface constitutes refrigerant is introduced rotor core smoothly; rotor core has some deep holes vertically, and refrigerant is communicated with the refrigerant distributor chamber along these holes promptly by internal bearing cover-guide shell-distributor chamber.
The length of rotor core radial flow path of the present utility model is to decide according to the volume of motor, rotor will produce powerful centrifugal force under high speed rotating, the rotor core radial flow path is under centrifugal action, powerful negative pressure will be produced, refrigerant is subjected to the effect of negative pressure to enter the rotor core radial flow path from the refrigerant distributor chamber, progressively quickens on runner.Owing to be distributed with the atomising device of some at the tail end of rotor core radial flow path, refrigerant is subjected to clashing of atomising device and produces the steam fog shape when flying to escape at a high speed, is continuing to be subjected to action of centrifugal force, and refrigerant throws away from the rotor core surface equably.A refrigerant part that throws away from the rotor core surface enters the stator core radial flow path, the part refrigerant cools off coil in the stator core radial flow path and iron core, most of refrigerant thus passage enter into stator core outer rim and casing composition apace can make it carry out the space of " latent heat of vaporization ", in this space, stator core is cooled off fully, the part refrigerant is heated and becomes gaseous state, the refrigerant of gas-liquid attitude flow to end winding from the stator core both sides respectively again, and end winding cooled off, go into plenum chamber at last.In aforementioned process, the gap of a small amount of refrigerant along rotor surface and stator core inner surface formation arranged, rotor core, rotor bar and rotor collector ring are axially cooled off, after flowing out the rotor collector ring, flow to end winding and cool off, enter plenum chamber at last.Spray thrower 1 of the present utility model is the static spray equipment in " rotation-static compound spray ", belongs to the important component part in the above motor cooling system of 300KW.Spray thrower is placed in the both sides of stator coil.Refrigerant flows into spray thrower through draft tube, and the jet-action of helical duct and aperture by spray thrower inside is atomized into the refrigerant of steam fog shape with refrigerant, is sprayed at the end of stator coil, and stator coil is cooled off, and enters plenum chamber at last.
The utility model is owing to having adopted described structure to have following advantage:
1. make unit and motor outward appearance succinct, attractive in appearance: to save cold-producing medium and refrigeration oil: to safeguard and prison Survey convenient.
2. adopt cold-producing medium to make this special type of cooling of cooling medium, will greatly be better than the air cooling, Water cooling and the cooling of other fluorine Lyons, therefore, the volume of this motor is littler, weight is lighter. Four. economic benefit
The utility model is mainly used in important air-conditioning equipments such as oil, chemical industry, hotel, market.At present, the technology of this motor still belongs to blank at home, and abroad only states such as U.S., day develop.
Claims (4)
1. a centrifugal refrierator refrigerant cools threephase asynchronous comprises rear end cap (12), rotating shaft and sliding bearing thereof, stator core, rotor core; It is characterized in that: deposit the coolant intake chamber (9) that is provided with on the motor, by pipeline and be arranged on refrigerant static channel between rear end cap, internal bearing cover (11) and rotating shaft and the centrifugal negative-pressure sealing of labyrinth type, be communicated with the refrigerant distributor chamber (3) at the back taper reducing place that is arranged on the variable-diameter structure rotating shaft; The radial flow path (5) that rotor core has a refrigerant is communicated with refrigerant distributor chamber (3) by some deep holes of rotor axial, has the radial flow path corresponding with the rotor core radial flow path (4) on the stator core; Bottom in motor has the plenum chamber (7) of collecting refrigerant.
2. centrifugal refrierator refrigerant cools threephase asynchronous according to claim 1, it is characterized in that: the centrifugal negative-pressure sealing apparatus structure of labyrinth type comprises getting rid of oil duct (15), helixseal (14) and the high pressure sealing gland (13) that is communicated with source of the gas by pipeline, be enclosed within guide shell (10) formation in the rotating shaft in the rotating shaft that is set in place in internal bearing cover, wherein the two ends of guide shell respectively with internal bearing cover (11) and with the place's rotating shaft of rotating shaft reverse taper reducing on the refrigerant distributor chamber be that labyrinth sealing connects.
3. centrifugal refrierator refrigerant cools threephase asynchronous according to claim 1 is characterized in that: rotor radial runner (5) has the atomising device that is made of tablet near in the tail end of air gap.
4. centrifugal refrierator refrigerant cools threephase asynchronous according to claim 1 is characterized in that: be provided with the spray thrower (1) that is communicated with coolant intake chamber (9) by pipeline (7) at motor inner-stator iron core end winding place.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00244600 CN2445502Y (en) | 2000-09-30 | 2000-09-30 | Cold-producing medium cooling three-phase asynchronous motor for centrifugal refrigerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00244600 CN2445502Y (en) | 2000-09-30 | 2000-09-30 | Cold-producing medium cooling three-phase asynchronous motor for centrifugal refrigerator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2445502Y true CN2445502Y (en) | 2001-08-29 |
Family
ID=33604246
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00244600 Expired - Fee Related CN2445502Y (en) | 2000-09-30 | 2000-09-30 | Cold-producing medium cooling three-phase asynchronous motor for centrifugal refrigerator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2445502Y (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101557149B (en) * | 2008-04-10 | 2011-09-07 | 何君 | Rotor structure of high-speed induction motor |
| CN103032347A (en) * | 2011-09-28 | 2013-04-10 | 珠海格力电器股份有限公司 | Centrifugal compressor with isolation structure |
| CN103107612A (en) * | 2012-12-29 | 2013-05-15 | 西北核技术研究所 | Through hole or through groove type high-speed rotation cutting device capable of cutting light or ray |
| CN103138488A (en) * | 2011-11-24 | 2013-06-05 | 苏州贝得科技有限公司 | Composite cooling system of three-phase asynchronous motor for semi-hermetic refrigeration compressor |
| CN103423202A (en) * | 2012-05-16 | 2013-12-04 | 珠海格力电器股份有限公司 | Centrifugal compressor and motor rear end cover thereof |
| CN104467288A (en) * | 2014-12-31 | 2015-03-25 | 烟台冰轮股份有限公司 | Semi-closed type oil cooling system for motor for compressor |
| CN105122606A (en) * | 2013-04-15 | 2015-12-02 | 三菱电机株式会社 | Rotating electrical machine |
| CN105322717A (en) * | 2014-07-28 | 2016-02-10 | 重庆美的通用制冷设备有限公司 | Motor for centrifugal compressor |
| CN108899725A (en) * | 2018-07-05 | 2018-11-27 | 成都工业学院 | A kind of collector ring for hot and humid environment |
| CN109286265A (en) * | 2018-10-25 | 2019-01-29 | 格力电器（合肥）有限公司 | Motor rear end cap structure seals liquid device and centrifugal compressor |
| CN109962575A (en) * | 2017-12-15 | 2019-07-02 | 本田技研工业株式会社 | Rotating electric machine |
| WO2020077789A1 (en) * | 2018-10-17 | 2020-04-23 | 珠海格力电器股份有限公司 | Electric motor and compressor |
-
2000
- 2000-09-30 CN CN 00244600 patent/CN2445502Y/en not_active Expired - Fee Related
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101557149B (en) * | 2008-04-10 | 2011-09-07 | 何君 | Rotor structure of high-speed induction motor |
| CN103032347A (en) * | 2011-09-28 | 2013-04-10 | 珠海格力电器股份有限公司 | Centrifugal compressor with isolation structure |
| CN103032347B (en) * | 2011-09-28 | 2015-08-19 | 珠海格力电器股份有限公司 | Centrifugal compressor with isolation structure |
| CN103138488A (en) * | 2011-11-24 | 2013-06-05 | 苏州贝得科技有限公司 | Composite cooling system of three-phase asynchronous motor for semi-hermetic refrigeration compressor |
| CN103423202B (en) * | 2012-05-16 | 2015-11-25 | 珠海格力电器股份有限公司 | Centrifugal compressor |
| CN103423202A (en) * | 2012-05-16 | 2013-12-04 | 珠海格力电器股份有限公司 | Centrifugal compressor and motor rear end cover thereof |
| CN103107612A (en) * | 2012-12-29 | 2013-05-15 | 西北核技术研究所 | Through hole or through groove type high-speed rotation cutting device capable of cutting light or ray |
| CN105122606A (en) * | 2013-04-15 | 2015-12-02 | 三菱电机株式会社 | Rotating electrical machine |
| CN105122606B (en) * | 2013-04-15 | 2017-12-08 | 三菱电机株式会社 | Electric rotating machine |
| CN105322717A (en) * | 2014-07-28 | 2016-02-10 | 重庆美的通用制冷设备有限公司 | Motor for centrifugal compressor |
| CN105322717B (en) * | 2014-07-28 | 2018-08-07 | 重庆美的通用制冷设备有限公司 | Centrifugal compressor motor |
| CN104467288A (en) * | 2014-12-31 | 2015-03-25 | 烟台冰轮股份有限公司 | Semi-closed type oil cooling system for motor for compressor |
| CN109962575A (en) * | 2017-12-15 | 2019-07-02 | 本田技研工业株式会社 | Rotating electric machine |
| CN108899725A (en) * | 2018-07-05 | 2018-11-27 | 成都工业学院 | A kind of collector ring for hot and humid environment |
| CN108899725B (en) * | 2018-07-05 | 2024-03-22 | 成都工业学院 | Converging ring for high-temperature and high-humidity environment |
| WO2020077789A1 (en) * | 2018-10-17 | 2020-04-23 | 珠海格力电器股份有限公司 | Electric motor and compressor |
| CN109286265A (en) * | 2018-10-25 | 2019-01-29 | 格力电器（合肥）有限公司 | Motor rear end cap structure seals liquid device and centrifugal compressor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |