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Method for mounting a drive shaft of a compressor

a technology of compressors and drive shafts, applied in the direction of positive displacement liquid engines, piston pumps, manufacturing tools, etc., can solve the problems of motor energy consumption, which is required, and achieve the effect of avoiding overcorrection

Inactive Publication Date: 2009-03-19
DANFOSS COMPRESSORS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The invention provides a method for mounting a drive shaft that ensures good alignment even when using components with large manufacturing tolerances. This is achieved by using a positioning stop on the first bearing support after mounting it on the stator. The method also allows for a uniform air gap between the rotor and stator, reduces frictional losses in the bearings, and ensures alignment of the bearing supports to the rotor opening. Additionally, the method includes using a tool or an auxiliary tool to align the bearings, and ensuring accurate alignment of the second bearing. The technical effects of the invention include improved alignment accuracy and efficiency of the drive shaft mounting process.

Problems solved by technology

As, however, refrigerant compressors are practically operating all the year round, the energy consumption of the motor, which is required for driving the compressor unit, must be kept as small as possible.

Method used

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  • Method for mounting a drive shaft of a compressor
  • Method for mounting a drive shaft of a compressor
  • Method for mounting a drive shaft of a compressor

Examples

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Embodiment Construction

[0030]FIG. 1 shows a stator 1 of a motor, which is used for driving a compressor, particularly a refrigerant compressor. The stator1 has a sheet pack 2 and a coil, of which coil ends 3 are shown. The sheet pack 2 surrounds a rotor opening 4. The rotor opening 4 is made in that already during the punching; the sheets forming the sheet pack 2 are provided with a central opening, so that the rotor opening 4 occurs, when the sheets of the sheet pack 2 are stacked.

[0031]A compressor block 5 is mounted and fixedly connected, for example by welding, on the outside of the sheet pack 2. The compressor block 5 can, for example, be a sheet metal part. The compressor block 5 has a basic unit 7 extending substantially parallel to the axis 6 of the stator 1, on which unit 7 a first bearing support 8 is fixed, for example by welding. After fixing on the basic unit 7, the first bearing support 8 forms a one-side suspended beam, which extends across the rotor opening 4. Both the basic unit 7 and the...

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Abstract

The invention concerns a method for mounting a drive shaft (19) of a compressor, particularly a hermetical refrigerant compressor, which has a motor with a stator (1) and a rotor (23), connected with the drive shaft (19) and located in a rotor opening (4) of the stator (1), a first bearing support (8) and a second bearing support (29) being connected with the stator (1), a first bearing (15) for the drive shaft (19) being mounted in the first bearing support (8) and a second bearing (28) for the drive shaft (19) being mounted in the second bearing support (29). It is endeavoured to provide a method for mounting a drive shaft, in which the use of components with relatively large manufacturing tolerances will still result in a good alignment of the drive shaft in relation to the stator. For this purpose, at least the first bearing support (8) is provided with a positioning stop for the first bearing (15) after mounting the first bearing support (8) on the stator (1).

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application is a Continuation Application of currently pending U.S. application Ser. No. 11 / 135,873 filed on May 24, 2005, which is incorporated by reference herein in its entirety, and claims the benefit of the filing date thereof under 35 U.S.C. §120. The present application also claims the benefit of and incorporates by reference in its entirety essential subject matter disclosed in German Patent Application No. 10 2004 025 678.0, filed on May 26, 2004.FIELD OF THE INVENTION[0002]The invention concerns a method for mounting a drive shaft of a compressor, particularly a hermetical refrigerant compressor.BACKGROUND OF THE INVENTION[0003]Refrigerant compressors have become products manufactured in large numbers, and should therefore be manufactured in the most cost effective manner possible. As, however, refrigerant compressors are practically operating all the year round, the energy consumption of the motor, which is required for dr...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): B23P19/04F04B35/04F01M1/00H02K5/16H02K5/167H02K7/06H02K7/08H02K15/02H02K15/16
CPCH02K5/1672Y10T29/53Y10T29/49009H02K15/16
Inventor IVERSEN, FRANK HOLMLASSEN, HEINZ OTTONOMMENSEN, MARTENPETERSEN, CHRISTIANSONKSEN, BEATE
Owner DANFOSS COMPRESSORS
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