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Rotary type compressor

A technology of rotary compressor and compression mechanism, applied in the direction of pump combination, mechanical equipment, machine/engine, etc. for elastic fluid rotary piston type/oscillating piston type, can solve the alignment error of spindle and motor bearing, motor bearing And the main bearing wear and other problems, to reduce the amount of deformation, solve the effect of increased vibration and operational reliability

Inactive Publication Date: 2012-08-22
GUANGDONG MEIZHI COMPRESSOR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In medium and large frequency conversion rotary compressors, due to the wear of the main bearing caused by the deflection of the main shaft, it is necessary to add a motor bearing to disperse the load on the main bearing. However, due to the alignment error of the main shaft and the motor bearing, the motor bearing and the main bearing wear problems

Method used

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  • Rotary type compressor
  • Rotary type compressor
  • Rotary type compressor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] see figure 1 , The pressure in the sealed casing 2 of the rotary compressor 1 is the high-pressure side pressure, and the sealed casing 2 is composed of a cylindrical middle casing 2a, an upper casing 2b, and a lower casing 2c. A motor 22 and a double-cylinder rotary compression mechanism 21 driven by the motor 22 are accommodated in the sealed casing 2 . The motor 22 includes a stator 22a and a rotor 22b.

[0029] see figure 2 , the compression mechanism 21 is divided into two cylinders 23 by a middle partition 27, a piston 28 and a sliding plate 29 respectively accommodated in each cylinder 23, an eccentric crankshaft 15 for eccentrically driving the piston 28, a main bearing 25 and an auxiliary bearing 26, etc. . The middle part of the cylinder 23 is provided with a cylinder compression chamber, and the piston 28 rotates eccentrically in the cylinder compression chamber. The sliding plate 29 reciprocates under the eccentric rotation of the piston 28 .

[0030] ...

Embodiment 2

[0068] see Figure 10 In Embodiment 2, after the bearing bracket 31 is fixed on the inner wall of the intermediate housing 2a, the elastic plate 32 connected with the central bearing 30 is fixed on the bearing bracket. Therefore, the elastic plate 32 can be fixed or removed from the bearing bracket 31 through the bearing screws 39 .

[0069] There is a gap between the mounting hole of the elastic plate 32 and the bearing screw 39 , so that it can move in the horizontal direction relative to the bearing bracket 31 . Thus, the main shaft 16 and center bearing 30 can be properly aligned. After centering, the elastic plate 32 is fixed on the bearing bracket 31 with bearing screws 39 .

[0070] As a result, compared with Embodiment 1, the alignment of the main shaft 16 and the center bearing 30 can be more in place. Moreover, the elastic plate 32 is fixed on the bearing bracket 31 in advance, and after the main shaft 16 and the center bearing 30 are aligned, the center bearing 3...

Embodiment 3

[0073] Embodiment 3 can further reduce the amount of oil ejection related to the adjustment hole 33 provided in the elastic plate 32 disclosed in Embodiment 1.

[0074] see Figure 11 , an oil separation plate 40 may be provided between the rotor 22 b and the elastic plate 32 . As a result, the gap between the elastic plate 32 and the oil separation plate 40 is reduced. The oil separation plate 40 is made up of a circular plate about the same size as the elastic plate 32 and a cylinder mounted on the outer wall of the main shaft 16 .

[0075] The high-pressure gas discharged from the compression mechanism 21 reaches the exhaust pipe 3 after passing through the adjustment hole 33 through the gap between the oil separation plate 40 and the elastic plate 32 .

[0076] The oil particles contained in the high-pressure gas fly outward along the tangential direction of the oil separation plate 40 through the oil separation plate 40 rotating together with the main shaft 16 .

[007...

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Abstract

The invention provides a rotary type compressor. A closed shell is internally provided with a compression mechanism and a motor, wherein the motor comprises a stator and a rotor; the compression mechanism comprises an air cylinder, an eccentric crank shaft and a slide sheet, wherein an air cylinder compression chamber is arranged in the middle of the air cylinder; the eccentric crank shaft drives a piston to do eccentric rotation in the air cylinder compression chamber; the slide sheet moves back and forth through the eccentric rotation of the piston; the eccentric crank shaft is composed of a main shaft, a secondary shaft and an eccentric shaft; a first bearing and a second bearing which are used for respectively supporting the main shaft and the secondary shaft of the eccentric crank shaft are arranged on the air cylinder; a third bearing is arranged at the opposite side of the first bearing by being separated from the motor; the third bearing comprises a bearing bracket which is arranged on the inner wall of the closed shell, a center bearing for supporting the main shaft of the eccentric crank shaft and an elastic plate which is arranged between the bearing bracket and the center bearing; and the elastic plate is used for elastically supporting the center bearing. The rotary type compressor not only can be suitable for the rotary type compressor but also can be suitable for a scroll compressor; and the rotary type compressor has the advantages of good centering effect, low abrasion rate and wide application range.

Description

technical field [0001] The invention relates to a rotary compressor, which is related to the sliding support of the eccentric crankshaft of the medium and large rotary compressor mainly using the frequency conversion motor. Background technique [0002] In recent years, the global penetration rate of rotary compressors installed in household air conditioners has gradually increased, and the adoption rate of medium and large rotary compressors used as commercial air conditioners has also gradually increased. The usual medium and large rotary compressors adopt the structure of frequency conversion motor and double cylinder in order to improve the efficiency and reliability of the compressor. [0003] In medium and large frequency conversion rotary compressors, due to the wear of the main bearing caused by the deflection of the main shaft, it is necessary to add a motor bearing to disperse the load on the main bearing. However, due to the alignment error of the main shaft and t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04C23/00
Inventor 小津政雄李华明
Owner GUANGDONG MEIZHI COMPRESSOR
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