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Rotary compressor and refrigeration cycle device provided with the same

A technology of rotary compressor and compression mechanism, applied in the direction of compressors, irreversible circulatory compressors, components of pumping devices for elastic fluids, etc., to avoid fatigue disconnection and contact with the shell, reduce rotational vibration, Vibration reduction effect

Active Publication Date: 2015-09-30
GUANGDONG MEIZHI COMPRESSOR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the former is difficult to solve in principle and has become a long-term issue

Method used

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  • Rotary compressor and refrigeration cycle device provided with the same
  • Rotary compressor and refrigeration cycle device provided with the same
  • Rotary compressor and refrigeration cycle device provided with the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] exist figure 1 The housing 2 of the illustrated rotary compressor 1 accommodates a motor unit 6 and a compression mechanism unit 4 . The motor part 6 is composed of a stator 7 fixed on the inner periphery of the housing 2 and a rotor 8 that rotates while maintaining a certain air gap 9 between the inner diameter of the stator 7. fixed. In addition, a motor coil 7 a is provided in the stator 7 .

[0050] Like the motor of the conventional rotary compressor, the motor unit 6 is selected from an AC motor, a DC inverter motor whose rotation speed can be changed, or the like. For reference, the above-mentioned air gap is about 0.4 to 0.5 mm when installed in a rotary compressor of a home air conditioner, and high-precision concentricity is required between the inner diameters of the rotor 8 and the stator 7 .

[0051] The compression mechanism part 4 is composed of a rolling piston 66 and a slide plate (not shown) housed in a compression chamber 65 formed in a cylinder 62...

Embodiment 2

[0074] The present invention is based on the gist that the design can be changed from the viewpoint of improving performance, reliability, and manufacturability. Figure 4In the illustrated compression mechanism unit 4 , the outer periphery of the main bearing 60 is fitted into the main bearing frame 35 provided on the inner periphery of the A casing 2 a. As a result, with the crankshaft 10 supported by the bush 16, the compression mechanism unit 4 can freely rotate repeatedly by two support methods. In addition, by adding the round protrusion support method used in Example 1, a third support method is formed. In addition, instead of the main bearing 60, the outer circumference of the air cylinder 62 may be circular as a supporting means.

[0075] In the second embodiment, the coil spring 32 provided between the C housing 2c and the circular protrusion 26 supports the load of the compression mechanism part 4, and serves as a buffer device for determining its rotational angula...

Embodiment 3

[0078] exist Figure 5 Among them, the suction hole 20a and the exhaust hole 60a opening to the compression chamber 65 are provided in the main bearing 60 and the sub bearing 20, respectively. That is to say, the parts that arrange the suction hole 20a and the exhaust hole 60a are replaced with those of the first or second embodiment.

[0079] During the operation of the rotary compressor 1, the low-pressure refrigerant sucked from the gas inlet and outlet pipe 51 passes through the motor part 6 from top to bottom, and is sucked into the suction hole 20a. The high-pressure refrigerant compressed in the compression chamber 65 is discharged to the muffler chamber 25a through the exhaust hole 60a, then flows from the gas inlet and outlet pipe 50 to the external muffler 55, and flows out to the external connecting pipe 56. Therefore, the internal pressure of the casing 2 is the low-pressure side of the refrigeration cycle, and the muffler chamber 25a, the gas inlet and outlet pip...

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Abstract

The invention discloses a rotary compressor and a refrigeration cycle device provided with the same. The rotary compressor is characterized in that in a sealed housing, the rotary compressor contains a motor part, a compressing mechanism part and a buffer component; the motor part consist of a stator fixed in the housing and a stator rotating with a certain air gap kept from the internal periphery of the stator; the compressing mechanism part is provided with a rolling piston and a crankshaft rotating through the rotor; the buffer component supports at least two supporting components of the compressing mechanism part rotating repeatedly and limits a repeated rotating range; a suction pipe or an exhaust pipe communicated with the compressing mechanism part is in sliding fit with the housing; and the suction pipe or the exhaust pipe opens a mouth in an additional sealed cavity on the housing. According to the rotary compressor, the rotating vibration of the rotary compressor can be reduced effectively, and a motor outgoing line of the motor part can be prevented from breaking due to fatigue and contacting with the housing.

Description

technical field [0001] The invention relates to the field of refrigeration, in particular to a rotary compressor and a refrigeration cycle device with the same. Background technique [0002] The rotary compressors popular in the world are composed of single cylinder or double cylinder, and more than 90% of them are single cylinder. On the other hand, compared with the double cylinder, the vibration of the single cylinder is very large due to the change of the compression torque. This rotational vibration, especially in window-type air conditioners and car air conditioners, is not only a vibration problem but also a noise problem, and it has long been expected to be improved. [0003] The vibration of a rotary compressor is composed of two types of vibration, one is rotational vibration and the other is orbital vibration due to the unbalanced mass of the piston. The latter can be counteracted by configuring a counterweight in the rotor. However, the former is difficult to ...

Claims

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Application Information

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IPC IPC(8): F04C29/00F04C29/06F25B1/04
Inventor 小津政雄向卫民张诚宋鹏杰王玲
Owner GUANGDONG MEIZHI COMPRESSOR
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