Multi-cylinder rotary compressor and refrigeration device with same

A technology of rotary compressor and compression mechanism, applied in rotary piston machinery, rotary piston pump, mechanical equipment, etc., can solve the problem of insufficient improvement effect, and achieve the improvement of refrigeration capacity, compressor efficiency and suction efficiency. The effect of improving and enhancing the suction efficiency

Inactive Publication Date: 2015-12-02
GUANGDONG MEIZHI COMPRESSOR +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, its improvement effect is not sufficient

Method used

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  • Multi-cylinder rotary compressor and refrigeration device with same
  • Multi-cylinder rotary compressor and refrigeration device with same
  • Multi-cylinder rotary compressor and refrigeration device with same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] Such as figure 1 In the illustrated multi-cylinder rotary compressor 1 , the outer periphery of a stator 4 a constituting a motor 4 and the outer periphery of an intermediate partition 50 provided at the center of a compression mechanism unit 5 are fixed to the inner periphery of a housing 2 . The casing 2 is composed of a cylindrical casing and two end plates welded at its upper and lower ends. In addition, lubricating oil (oil) is stored at the bottom of the casing 2, but it is not shown in the figure.

[0055] The compression mechanism part 5 is provided with: the first air cylinder 11 and the second air cylinder 21 fixed in the middle partition plate 50, the first piston 18 and the second piston 28 accommodated in these air cylinders, and the first slide reciprocating together with these pistons. Sheet 16 and the second sliding sheet 26 ( Figure 4 Refer to), the first end plate 40 and the second end plate 45 connected to the opening surfaces of the first compress...

Embodiment 2

[0073] Figure 7 In order to increase the installation angle of the second cylinder 21 by 45 degrees, the angle θ of the two first slide grooves 13 and the second slide groove 23 is set to 90 degrees. As a result, the tapped holes 60a and 60b coincide, and four through tapped holes distributed at equal intervals of 90 degrees each are formed, so it is convenient for processing and assembling parts.

[0074] Furthermore, if the angle θ is increased to 180 degrees by increasing θ, the maximum values ​​of the rotational torque generated by the two compression chambers will overlap, so the rotational torque is the same as that of the single cylinder, and the effect of mitigating the torque variation of the double cylinder is lost. Therefore, in order to maintain the obvious difference in the torque variation effect of the two cylinders, it can be determined that the upper limit of θ is 90 degrees.

Embodiment 3

[0076] Figure 8 The thickness of the middle partition 50 is increased, and the first suction hole 51 and the second suction hole 52 are arranged in the vertical direction in the outer periphery 50c of the middle partition 50. Each suction circuit is independent and communicates with the first compression chamber 11a and the second compression chamber 11a. 2 Compression chamber 21b.

[0077] In Embodiment 3, the thickness of the middle partition 50 is increased, so the central hole 50d can be used as a bearing. In this design, the intermediate shaft 33 provided in the eccentric shaft 30 is a sliding fit with the central hole 50d. In addition, the angle θ of the two cylinders used in Embodiments 1 and 2 may be zero.

[0078] In addition, Embodiments 1 to 3 show the application of a two-cylinder compressor. Needless to say, these disclosure techniques can also be applied to a 3-cylinder compressor that requires two partitions, or a 4-cylinder compressor that requires three part...

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Abstract

The invention discloses a multi-cylinder rotary compressor and a refrigeration device with the same. A compressing mechanism part and a motor are contained in a sealed shell of the multi-cylinder rotary compressor. The compressing mechanism part comprises a first air cylinder, a second air cylinder and a middle separating plate, wherein the first air cylinder is provided with a first compressing cavity and a first sliding piece groove, the second air cylinder is provided with a second compressing cavity and a second sliding piece groove, the middle separating plate is located between the first air cylinder and the second air cylinder and combined with the first air cylinder and the second air cylinder. A first air sucking hole and a second air sucking hole formed in the outer periphery of the middle separating plate are connected with the first compressing cavity and the second compressing cavity respectively. According to the multi-cylinder rotary compressor, air sucking passages of the first compressing cavity and the second compressing cavity are independent, the phenomenon of sucked air interference between the first compressing cavity and the second compressing cavity is avoided, and the total air sucking efficiency of the first compressing cavity and the second compressing cavity can be greatly improved.

Description

technical field [0001] The invention relates to the refrigeration field, in particular to a multi-cylinder rotary compressor and a refrigeration device having the same. Background technique [0002] The advantage of the 2-cylinder compressor is that it can operate from high speed to low speed, and the air conditioner or refrigeration temperature can maintain the correct temperature. [0003] The displacement of each cylinder of the 2-cylinder compressor is about 50% of that of the 1-cylinder compressor. In addition, since the two eccentric shafts provided in the eccentric shaft face each other at 180 degrees, the variation of the compression moment is reduced by more than 50% compared with the single cylinder system. Therefore, the rotary vibration (circumferential vibration) of the compressor can be significantly reduced. On the other hand, since the displacement is halved, the cylinder height becomes smaller. Because, if the inner diameter of the compression chamber is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04C18/356
Inventor 小津政雄宋鹏杰向卫民喻继江张诚
Owner GUANGDONG MEIZHI COMPRESSOR
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