Unlock instant, AI-driven research and patent intelligence for your innovation.

Refrigeration compressor and a method for assembling such a refrigeration compressor

Inactive Publication Date: 2014-05-22
DANFOSS COMML COMPRESSORS
View PDF1 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention aims to improve the refrigeration compressor to overcome its shortcomings in conventional compressors. The objective is to provide a reliable refrigeration compressor.

Problems solved by technology

Such a movement of the orbiting scroll member could create excessive forces between the fixed and orbiting scroll members, and thus damage the orbiting and fixed scroll members or the sealing element disposed between the spiral wrap of the orbiting scroll member and the end plate of the fixe scroll member.
Further, in operation of such a refrigeration compressor, deformations of the drive shaft, and more particularly flexions of the drive shaft, may be transferred to the rotor and then damage the latter.
Furthermore, in operation of such a refrigeration compressor, torque variations occuring in the motor generate vibrations which are transferred to the shaft and to the scroll compression unit, which could damage some elements of the scroll compression unit.

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
  • Refrigeration compressor and a method for assembling such a refrigeration compressor
  • Refrigeration compressor and a method for assembling such a refrigeration compressor
  • Refrigeration compressor and a method for assembling such a refrigeration compressor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0063]FIG. 1 shows a scroll-type refrigeration compressor 2 occupying a vertical position. However, the refrigeration compressor 2 according to the invention could occupy an inclined position, or a horizontal position, without significant modification to its structure.

[0064]The refrigeration compressor 2 shown in FIG. 1 comprises a closed casing 3 defined by a shell 4 whose top and bottom ends are respectively closed by cap 5 and a base 6.

[0065]The refrigeration compressor 2 also comprises a support frame 7 fixed in the closed casing 3, the closed casing 3 and the support frame 7 defining a low pressure volume underneath the support frame 7 and a high pressure volume above the support frame 7.

[0066]The refrigeration compressor 2 further comprises a scroll compression unit 8 disposed above the support frame 7, i.e. in the high pressure volume. The scroll compression unit 8 has a fixed scroll member 9 and an orbiting scroll member 11 interfitting with each other. In particular the orb...

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

This refrigeration compressor includes an electric motor having a stator and a rotor provided with an axial through passage, a compression unit adapted for compressing refrigerant, and a drive shaft adapted for driving the compression unit, the drive shaft extending into the axial through passage of the rotor. The rotor is slide-fitted on the drive shaft.

Description

FIELD OF THE INVENTION[0001]The present invention relates to a refrigeration compressor, and in particular to a scroll-type refrigeration compressor.BACKGROUND OF THE INVENTION[0002]As known, a scroll-type refrigeration compressor comprises:[0003]an electric motor having a stator and a rotor, the rotor being provided with an axial through passage,[0004]a scroll compression unit adapted for compressing refrigerant and including an orbiting scroll member and a fixed scroll member, and[0005]a drive shaft adapted for driving the orbiting scroll member of the compression unit, the drive shaft extending into the axial through passage of the rotor and being tightly fixed to the rotor for example by press-fitting or heat shrink fitting the rotor to the drive shaft.[0006]During start-up of the compressor electric motor, the rotor has a tendency to slightly axially move in the direction of the compression unit, which leads to a corresponding axial movement of the drive shaft and of the orbiti...

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
IPC IPC(8): F04C29/00F04C18/02
CPCF04C23/02F04C28/06F04C29/0085F04C14/06F04C15/008F04C2240/60F04C29/0071F04C18/0207
Inventor PFISTER, JEAN MICHELXUEYOU, ZHOUBONNEFOI, PATRICEMELDENER, GAEL
Owner DANFOSS COMML COMPRESSORS