CN103956858A - Screw compressor system and application system thereof - Google Patents
Screw compressor system and application system thereof Download PDFInfo
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- CN103956858A CN103956858A CN201410213176.5A CN201410213176A CN103956858A CN 103956858 A CN103956858 A CN 103956858A CN 201410213176 A CN201410213176 A CN 201410213176A CN 103956858 A CN103956858 A CN 103956858A
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- Prior art keywords
- screw compressor
- compressor system
- rotor
- synchronous motor
- permagnetic synchronous
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Abstract
The invention discloses a screw compressor system and an application system thereof. The screw compressor system comprises a screw compressor and a permanent magnet synchronous motor. The permanent magnet synchronous motor provides power for the screw compressor, and due to the fact that rotor loss of the permanent magnet synchronous motor is avoided, the motor power factor is high. Through actual measurement, efficiency of the motor is higher than an asynchronous motor for driving by 2-5%, and therefore the problem that the driving efficiency of an existing screw compressor system is low is solved.
Description
Technical field
The application relates to Compressor Technology field, more particularly, relates to a kind of screw compressor system and application system thereof.
Background technology
Along with growing to refrigeration air-conditioner demand of China's single file building and single file manufacturability equipment, the matching used critical component of refrigeration air-conditioner, also rapid growth of the output of refrigerant compressor.The advantages such as screw compressor relies on that high, the convenient operating maintenance of its reliability, dynamic equilibrium are good, strong adaptability, gas transmission modulability are good, are widely used on the refrigerating plants such as freezing, refrigeration, air-conditioning.
The drive motors of existing screw compressor system is asynchronous machine, exists the problem that drive efficiency is lower.
Summary of the invention
In view of this, the application provides a kind of screw compressor system and application system thereof, to solve the lower problem of existing screw compressor system drive efficiency.
To achieve these goals, the existing scheme proposing is as follows:
A kind of screw compressor system, comprising:
Screw compressor;
Permagnetic synchronous motor, for driving described screw compressor;
Described permagnetic synchronous motor comprises rotating shaft, is fixedly installed on the rotor in described rotating shaft, the stator that is arranged on described peritrochanteric and is slidably connected with described rotor, is fixedly connected with and is fixed on the motor case on the shell of described screw compressor with described stator;
Described rotating shaft is directly connected with the power input shaft of described screw compressor.
Preferably, the power input shaft that described rotating shaft is described screw compressor extends the shaft extension part of described casing.
Preferably, described rotor is fixedly installed in described rotating shaft by hot cover process or cold-press process.
Preferably, described rotor is V shape rotor structure.
Preferably, the permanent magnet of described rotor is provided with multiple intervals in the axial direction, forms multiple magnetic gaps.
Preferably, described rotor is provided with multiple axially extending bores.
Preferably, on described motor case, be provided with multiple through holes.
Preferably, described permagnetic synchronous motor is provided with freon cooling system, water cooling system or air cooling system.
Preferably, also comprise:
The frequency converter that power output end is connected with the power input end of described permagnetic synchronous motor.
A kind of refrigerating system is provided with above-described screw compressor system.
Can find out from technique scheme, screw compressor system and application system thereof that the application provides comprise screw compressor and permagnetic synchronous motor, utilize permagnetic synchronous motor to provide power to screw compressor, because permagnetic synchronous motor does not have rotor loss, motor power factor is higher, find by actual measurement, its efficiency exceeds 2～5% than the efficiency that adopts Induction Motor-Driven, thereby can solve the lower problem of drive efficiency of existing screw compressor system.
Brief description of the drawings
In order to be illustrated more clearly in the embodiment of the present application or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiment of the application, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
The structure chart of a kind of screw compressor system that Fig. 1 provides for another embodiment of the application;
The part sectioned view of the rotor of the permagnetic synchronous motor that Fig. 2 provides for another embodiment of the application.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present application, the technical scheme in the embodiment of the present application is clearly and completely described, obviously, described embodiment is only some embodiments of the present application, instead of whole embodiment.Based on the embodiment in the application, those of ordinary skill in the art are not making the every other embodiment obtaining under creative work prerequisite, all belong to the scope of the application's protection.
Embodiment mono-
The screw compressor system that the present embodiment provides comprises screw compressor (not shown) and permagnetic synchronous motor (not shown), and permagnetic synchronous motor is for providing power to screw compressor.
Can find out from technique scheme, the screw compressor system that the present embodiment provides utilizes permagnetic synchronous motor to provide power to screw compressor, because permagnetic synchronous motor does not have rotor loss, motor power factor is higher, find by actual measurement, its efficiency exceeds 2～5% than the efficiency that adopts Induction Motor-Driven, thereby can solve the lower problem of drive efficiency of existing screw compressor system.
The power input shaft of the screw compressor in the present embodiment is directly connected with the power output shaft of magneto, connected mode is axle sleeve or ring flange, cancel speed-increasing transmission, so not only avoided gear drive loss, and the noise of complete machine and maintenance workload can reduce greatly.
More than the power output of the magneto of the present embodiment can reach 130KW, maximum speed can reach 5500r/min.
Embodiment bis-
The structure chart of a kind of screw compressor system that Fig. 1 provides for another embodiment of the application.
As shown in Figure 1, the screw compressor system that the present embodiment provides comprises screw compressor and permagnetic synchronous motor.
Stator 40 that permagnetic synchronous motor comprises motor housing 50, be fixedly connected with motor housing, the rotor 30 and the rotating shaft 20 that are slidably connected with stator.
Motor housing 50 is fixedly connected with the shell 10 of screw compressor, is specifically directly installed on the shell 10 of screw compressor by the mounting flange on motor housing 50.
In the present embodiment, the epitaxial part of the power input shaft (not shown) that the rotating shaft 20 of permagnetic synchronous motor is screw compressor, stator 30 is fixedly installed in rotating shaft 20 by hot cover process or cold-press process.
In rotor 30, be provided with multiple axially extending bores 31, be used for rotor to lower the temperature as cooling duct; On motor case, be also provided with multiple through holes 51, be beneficial to circulation of air so that the temperature of permagnetic synchronous motor inside is distributed.
In order better permagnetic synchronous motor being lowered the temperature, freon cooling system (not shown), water cooling system (not shown) or air cooling system (not shown) can also to be set it is carried out to cooling.
Embodiment rotor adopts V shape rotor structure, and as shown in Figure 2, the iron core 32 of rotor is arranged in rotating shaft 20, and core interior is provided with the installing hole 33 that multiple V-arrangements are arranged, and is provided with permanent magnet 34, the preferred magnet steel of permanent magnet in installing hole.Between installing hole, there is an interval, form reinforcement.
The permanent magnet 34 of rotor does not lead directly in the axial direction, but is provided with multiple intervals (not shown), forms the magnet structure of segmented.Eddy current loss can be reduced like this, thereby the efficiency of permagnetic synchronous motor can be further improved.
In permagnetic synchronous motor in the present embodiment, there is no bearing, easy for installation.
Embodiment tri-
The screw compressor system that the present embodiment provides has also been set up frequency converter on the basis of a upper embodiment.The electric energy output end of frequency converter is connected with the electric energy input of permagnetic synchronous motor.
Frequency converter is used for receiving three-phase electric energy, and the frequency of three-phase electric energy is carried out to frequency conversion, frequency conversion three-phase electric energy after output frequency conversion outputs to the electric energy output end of permagnetic synchronous motor, adjust with the rotating speed to permagnetic synchronous motor, to meet the demand of different fan-out capabilities, adopt after variable frequency control, the efficiency of total system can reach 97%.
Embodiment tetra-
The present embodiment provides a kind of refrigerating system, is provided with the screw compressor system described in above embodiment mono-, embodiment bis-or embodiment tri-.
Finally, also it should be noted that, in this article, relational terms such as the first and second grades is only used for an entity or operation to separate with another entity or operating space, and not necessarily requires or imply and between these entities or operation, have the relation of any this reality or sequentially.And, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thereby the process, method, article or the equipment that make to comprise a series of key elements not only comprise those key elements, but also comprise other key elements of clearly not listing, or be also included as the intrinsic key element of this process, method, article or equipment.The in the situation that of more restrictions not, the key element being limited by statement " comprising ... ", and be not precluded within process, method, article or the equipment that comprises described key element and also have other identical element.
In this specification, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is and the difference of other embodiment, between each embodiment identical similar part mutually referring to.
To the above-mentioned explanation of the disclosed embodiments, make professional and technical personnel in the field can realize or use the application.To be apparent for those skilled in the art to the multiple amendment of these embodiment, General Principle as defined herein can, in the case of not departing from the application's spirit or scope, realize in other embodiments.Therefore, the application will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (10)
1. a screw compressor system, is characterized in that, comprising:
Screw compressor;
Permagnetic synchronous motor, for driving described screw compressor;
Described permagnetic synchronous motor comprises rotating shaft, is fixedly installed on the rotor in described rotating shaft, the stator that is arranged on described peritrochanteric and is slidably connected with described rotor, is fixedly connected with and is fixed on the motor case on the shell of described screw compressor with described stator;
Described rotating shaft is directly connected with the power input shaft of described screw compressor.
2. the screw compressor system of stating as claim 1, is characterized in that, the power input shaft that described rotating shaft is described screw compressor extends the shaft extension part of described casing.
3. screw compressor system as claimed in claim 1, is characterized in that, described rotor is fixedly installed in described rotating shaft by hot cover process or cold-press process.
4. screw compressor system as claimed in claim 1, is characterized in that, described rotor is V shape rotor structure.
5. screw compressor system as claimed in claim 4, is characterized in that, the permanent magnet of described rotor is provided with multiple intervals in the axial direction, forms multiple magnetic gaps.
6. screw compressor system as claimed in claim 1, is characterized in that, described rotor is provided with multiple axially extending bores.
7. screw compressor system as claimed in claim 1, is characterized in that, is provided with multiple through holes on described motor case.
8. the screw compressor system as described in claim 1～7 any one, is characterized in that, described permagnetic synchronous motor is provided with freon cooling system, water cooling system or air cooling system.
9. screw compressor system as claimed in claim 8, is characterized in that, also comprises:
The frequency converter that power output end is connected with the power input end of described permagnetic synchronous motor.
10. a refrigerating system, is characterized in that, is provided with the screw compressor system described in claim 1～9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410213176.5A CN103956858A (en) | 2014-05-20 | 2014-05-20 | Screw compressor system and application system thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410213176.5A CN103956858A (en) | 2014-05-20 | 2014-05-20 | Screw compressor system and application system thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103956858A true CN103956858A (en) | 2014-07-30 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410213176.5A Pending CN103956858A (en) | 2014-05-20 | 2014-05-20 | Screw compressor system and application system thereof |
Country Status (1)
| Country | Link |
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| CN (1) | CN103956858A (en) |
Citations (7)
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|---|---|---|---|---|
| CN201298761Y (en) * | 2008-11-21 | 2009-08-26 | 湖南南车时代电动汽车股份有限公司 | Rotor for permanent-magnet motor |
| CN101978577A (en) * | 2008-03-18 | 2011-02-16 | 日东电工株式会社 | Permanent magnet for motor, and method for manufacturing the permanent magnet for motor |
| CN102420482A (en) * | 2011-12-19 | 2012-04-18 | 南车株洲电机有限公司 | Permanent magnet synchronous motor and V-shaped rotor structure thereof |
| CN202900662U (en) * | 2012-11-12 | 2013-04-24 | 苏州通润驱动设备股份有限公司 | Integrated screw air compressor |
| CN203067286U (en) * | 2012-02-28 | 2013-07-17 | 阿特拉斯·科普柯空气动力股份有限公司 | Screw type compressor |
| CN203430780U (en) * | 2013-08-13 | 2014-02-12 | 福建雪人压缩机科技有限公司 | Semi-closed variable-frequency high-speed screw refrigerating compressor |
| CN203871987U (en) * | 2014-05-20 | 2014-10-08 | 南车株洲电机有限公司 | Screw-type compressor system and application system thereof |
-
2014
- 2014-05-20 CN CN201410213176.5A patent/CN103956858A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101978577A (en) * | 2008-03-18 | 2011-02-16 | 日东电工株式会社 | Permanent magnet for motor, and method for manufacturing the permanent magnet for motor |
| CN201298761Y (en) * | 2008-11-21 | 2009-08-26 | 湖南南车时代电动汽车股份有限公司 | Rotor for permanent-magnet motor |
| CN102420482A (en) * | 2011-12-19 | 2012-04-18 | 南车株洲电机有限公司 | Permanent magnet synchronous motor and V-shaped rotor structure thereof |
| CN203067286U (en) * | 2012-02-28 | 2013-07-17 | 阿特拉斯·科普柯空气动力股份有限公司 | Screw type compressor |
| CN202900662U (en) * | 2012-11-12 | 2013-04-24 | 苏州通润驱动设备股份有限公司 | Integrated screw air compressor |
| CN203430780U (en) * | 2013-08-13 | 2014-02-12 | 福建雪人压缩机科技有限公司 | Semi-closed variable-frequency high-speed screw refrigerating compressor |
| CN203871987U (en) * | 2014-05-20 | 2014-10-08 | 南车株洲电机有限公司 | Screw-type compressor system and application system thereof |
Non-Patent Citations (1)
| Title |
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| 戈宝军等: "《电机学（第二版）》", 30 November 2013, 中国电力出版社 * |
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Application publication date: 20140730 |
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