Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Rotor assembly

a high-speed compressor and rotor technology, which is applied in the direction of bearings, shafts, motors, etc., can solve the problems of prolonging the life of bearings, and achieve the effects of ensuring the alignment of the shaft within the housing, prolonging the life of bearings, and ensuring the radial load of the two bearings

Inactive Publication Date: 2010-08-26
DYSON TECH LTD
View PDF35 Cites 44 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention provides a rotor assembly with a bearing cartridge that is mounted on a shaft and includes a pair of bearings, a spring applying a preload to each bearing, and a sleeve surrounding the bearings. The bearing cartridge is designed to securely attach the rotor assembly to a housing or frame. The sleeve helps align the bearings and acts as a heat sink, improving the life of the bearings. The rotor assembly is also designed to be dynamically balanced and may have a single coil spring preload the bearings. The invention also provides a dirt cap to prevent dirt from entering the bearing. These features make the rotor assembly ideal for high-speed applications and ensure its stability and reliability.

Problems solved by technology

The sleeve also acts as a heat sink for the bearings, thus prolonging the life of the bearings.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Rotor assembly
  • Rotor assembly

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0019]The rotor assembly 1 of FIG. 1 comprises a shaft 2 to which are mounted an impeller 3, a rotor core 4, a bearing cartridge 5, and a dirt cap 6.

[0020]The impeller 3 is mounted to a first end of the shaft 2. The impeller 3 illustrated in FIG. 1 is a centrifugal impeller. However, other types of impeller may equally be employed according to the intended application of the rotor assembly 1.

[0021]The rotor core 4 is mounted to a second end of the shaft 2. The rotor core 4 is formed of a hard or soft magnetic material. The shaft 2 is formed of a soft magnetic material which then reduces the reluctance of the magnetic circuit. Nevertheless, a non-magnetic material might alternatively be used for the shaft 2.

[0022]The bearing cartridge 5 is located between the impeller 3 and the rotor core 4. The bearing cartridge 5 comprises a pair of bearings 7,8, a spacer 9, a spring 10, and a sleeve 11.

[0023]The bearings 7,8 are identical, with each comprising an inner race 12, a cage 13 supportin...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A rotor assembly that includes a shaft to which are mounted an impeller, a rotor core and a bearing cartridge. The bearing cartridge is mounted between the impeller and the rotor core and comprises a pair of bearings, a spring that applies a preload to each of the bearings, and a sleeve that surrounds the bearings.

Description

REFERENCE TO RELATED APPLICATIONS[0001]This application claims the priority of United Kingdom Application No. 0903053.7, filed Feb. 24, 2009, the entire contents of which are incorporated herein by reference.FIELD OF THE INVENTION[0002]The present invention relates to a rotor assembly for a high-speed compressor.BACKGROUND OF THE INVENTION[0003]The rotor assembly of many high-speed compressors includes a shaft mounted to a housing by a pair of bearings, each bearing located at opposite ends of the shaft. The provision of bearings at opposite ends of the shaft affords good stability. However, the pathway between the two bearings through the housing is relatively long and typically traverses several distinct components of the compressor. As a consequence of dimensional and geometric tolerances, it is generally difficult to ensure that the rotor assembly is accurately aligned within the housing. Additionally, for high-speed compressors, the bearings are ideally preloaded to prevent ski...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(United States)
IPC IPC(8): F04D29/046
CPCF04D29/0563F04D29/059F16C25/083F16C35/077F16C35/12F16C19/55F16C19/06F16C19/54F16C2380/26F16C2360/44F01D25/162F04D29/0462F16C35/04F16C39/02F04D29/056F16C25/08
Inventor MOCKRIDGE, RICHARD IAINGREETHAM, STEPHENCHILDE, MATTHEW JOHN
Owner DYSON TECH LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com