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Frequency conversion screw type cold compressor three-support structure

A technology of refrigeration compressors and supporting structures, applied in the direction of rotary piston machinery, control systems, mechanical equipment, etc.

Inactive Publication Date: 2008-12-31
SHANGHAI HANBELL PRECISE MASCH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a three-support structure for the shaft system of the variable frequency screw refrigeration compressor to solve many problems existing in the shaft system of the existing variable frequency screw refrigeration compressor

Method used

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  • Frequency conversion screw type cold compressor three-support structure

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Embodiment Construction

[0017] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

[0018] see figure 1 , The entire variable frequency screw refrigeration compressor is composed of 3 parts: the casing 1, the casing end cover 2, and the bearing seat 3. The casing 1 is located in the middle of the compressor, and the casing end cover 2 and the bearing seat 3 are respectively located on the left and right sides of the casing.

[0019] The most important parts of the compressor are the two screws, figure 1 The male screw rotor 5 of the compressor can be seen in , which runs through the interior of the compressor, but the helical tooth part 5 thereof is located in the compression chamber 8 inside the compressor casing.

[0020] The power equipment of the compressor—the motors 10, 11 are located in the motor cavity 9 inside the casi...

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Abstract

The invention relates to a three-supporting structure for the frequency conversion screw rod type refrigerating compressor shaft system. The three-supporting structure comprises a machine casing, a machine casing end cover, a bearing seat, a motor positioned inside the casing and composed of a stator and rotors as well as a female and a male screw rod rotors inside the machine case, wherein, the casing is positioned in the middle of the compressor, and the end cover of the machine casing and the bearing seat are respectively positioned at the left side and the right side of the machine casing. The three-supporting structure is characterized in that a first group of bearings, a second group of bearings and a third group of bearings are respectively installed in the bearing seat, the machine casing and the casing end cover, in order to form three supporting points; the first group of bearings and the second group of bearings are used for supporting the screw rod rotors of the compressor, and the second group of bearings and the third group of bearings are mainly used for supporting the motor rotors. The three-supporting structure adopts three bearings for load bearing, and has the advantages that the load is effectively distributed, the swinging of the motor rotors is fundamentally avoided, the negative effects caused by the swinging are prevented, and both the noise and the vibration of the compressor are effectively reduced, thus the system performance is improved.

Description

technical field [0001] The invention relates to the technical field of shafting of frequency conversion screw compressors, in particular to a three-support structure for frequency conversion screw refrigeration compressors when the speed exceeds 4000r / min. Background technique [0002] As we all know, in a screw refrigeration compressor, it consists of a pair of female and male meshing rotors, a casing, a bearing seat, a casing end cover, a motor, and multiple bearings. The male and female rotors are located in the casing, and the two ends are respectively supported by multiple bearings. One end of the casing is connected with a bearing seat, and the opposite direction is connected with a casing end cover. The motor stator is fixed in the casing, and the rotor is fixed on the positive shaft. On the non-helical teeth of the rotor, the external power supply provides electric power to the motor, and the motor converts mechanical power through the electromagnetic field to drive ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04C18/16F04C29/00F04C29/02F04C29/12H02P27/00
Inventor 连季红邓壮谢鹏
Owner SHANGHAI HANBELL PRECISE MASCH CO LTD
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