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Variable-speed scroll refrigeration compressor

A technology for refrigeration compressors and compressors, which is applied in the direction of rotary piston machines, rotary piston pumps, rotary piston/swing piston pump components, etc., and can solve problems such as component loss

Inactive Publication Date: 2013-06-19
DANFOSS COMML COMPRESSORS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The generation of this force can lead to premature wear of the components that make up the compression stage

Method used

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  • Variable-speed scroll refrigeration compressor
  • Variable-speed scroll refrigeration compressor
  • Variable-speed scroll refrigeration compressor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0052] figure 1 A scroll refrigeration compressor is described in an upright position. However, the compressor according to the invention can also be in an inclined position or in a horizontal position without having to make major changes to its structure.

[0053] figure 1 The compressor shown comprises a hermetic casing delimited by a sleeve 2, closed at its upper and lower ends by an end cover 3 and a base 4, respectively. The assembly of the housing can be achieved in particular by means of welded joints.

[0054] The middle part of the compressor is occupied by the body 5 , which defines two volumes, namely: the suction volume below the body 5 and the compression volume above the body 5 . The sleeve 2 includes a refrigerant inlet 6 opening into a suction volume for bringing refrigerant into the compressor.

[0055] The block 5 is used to house the compression stage 7 for the refrigerant. Said compression stage 7 comprises: a fixed volute 8 comprising a plate 9 from w...

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PUM

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Abstract

The compressor includes a sealed enclosure containing a compression stage, an electric motor having a stator and a rotor, an oil pump rotationally coupled to the rotor, including an oil inlet port connected to an oil sump, and control means arranged to command the operation of the motor in a start-up mode in which the rotor is rotated at a first speed of rotation included in a first speed range, and a normal operating mode in which the rotor is rotated at a second speed of rotation included in a second speed range higher than the first speed range. The compressor includes an oil injection device having an oil injection duct connected to a first oil outlet port of the oil pump and arranged to supply the compression stage with oil.

Description

technical field [0001] The invention relates to a variable-speed scroll refrigeration compressor. Background technique [0002] Patent document FR 2,885,966 describes a variable speed scroll refrigeration compressor comprising: a hermetic casing with compression stages; an electric motor equipped with a stator and a rotor; a drive shaft coupled in rotation with the rotor of the electric motor, the drive shaft Comprising a first end for driving the movement of the moving parts of the compression stage, and a second end for rotationally coupling with an oil pump for supplying oil from an oil tank provided in the lower part of the housing to a drive shaft formed in the central part lubrication pipes. The lubrication ducts have lubrication ports, which are located on the respective guide bearings of the drive shaft. [0003] After such a compressor has been out of service for a long period of time, the refrigerant present inside the compressor may condense, especially on the c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04C18/02F04C23/02F04C28/00F04C29/02F04C29/00
CPCF04C28/06F04C28/08F04C29/025F04C18/0215F04C23/008F04C18/00
Inventor 帕垂斯·邦尼弗伊王菲霏
Owner DANFOSS COMML COMPRESSORS