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rotary compressor

A rotary compressor and rotary compression technology, applied in the field of rotary compressors, can solve problems such as reduced reliability, reduced bearing rigidity, and efficiency loss, and achieve the effects of improved reliability and production efficiency, and reduced over-compression loss

Active Publication Date: 2017-03-29
GUANGDONG MEIZHI COMPRESSOR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The bearings of conventional rotary compressors equipped with tongue-type discharge valves have a large area of ​​the valve receiving groove and a thin bottom surface, so the bearing rigidity is reduced
Therefore, loss of efficiency due to increased deformation of the compression chamber and deformation of the bearing, resulting in reduced reliability

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] figure 1 Shown is the form of Example 1 of the present invention. The rotary compressor 1 is constituted by a compression mechanism part 4 mounted on the inner diameter of the hermetic casing 2, and a motor part 3 arranged on the top thereof. The compression mechanism part 4 is equipped with the following components: a cylinder 40, a piston 45 that operates eccentrically on a compression chamber 41 formed on the cylinder, a sliding plate (not shown) that slides synchronously with the piston, a crankshaft 60 that drives the piston 45, and a crankshaft that slides and supports the crankshaft. The main bearing 50 and the auxiliary bearing 55.

[0035] The main bearing 50 is composed of a long bearing 50a and a main bearing flange 50b, the auxiliary bearing 55 is composed of a short bearing 55a and an auxiliary bearing flange 55b, and the main bearing flange 50b and the auxiliary bearing flange 55b are fixed on the cylinder 40, At the same time, a sealed compression cavit...

Embodiment 2

[0049] In a rotary compressor with a large displacement of the compression chamber 41 , due to the increase in the amount of discharged gas, it is usually necessary to enlarge the stroke of the exhaust hole 13 and the valve. However, as the amount of exhaust gas increases, the swing of the exhaust valve 20 during operation also increases. Figure 5 In the second embodiment shown, the countermeasure is to add a valve spring 21 between the exhaust valve 20 and the stop ring 22 .

[0050] Figure 5 , Figure B shows the stop ring 22, the valve spring 21 and the exhaust valve 20. Figure C shows the fluid chamber 15 with the snap ring groove 17 at a higher position, and Figure D1 shows the assembly diagram of the above-mentioned components and the fluid chamber 15. In addition, what is shown in FIG. D2 is the state after the exhaust valve 20 floats, and the valve spring 21 pressed by the lower end surface of the stop ring 22 by the exhaust valve 20 . The valve spring 21 is suitab...

Embodiment 3

[0052] In the rotary compressor, since the position of the discharge hole 13 is determined according to the inner diameter of the compression chamber 41, the arrangement position of the cylindrical hole 11 is limited. Moreover, due to the outer diameter of the long bearing 50a, the outer diameter of the main bearing flange 50b, and the positions of the screw holes 53, the number and inner diameter of the gas passage chambers 12 are limited. The third embodiment shown is a design example that can be applied to the above-mentioned restricted design.

[0053] Figure 6 There are 4 gas passage chambers 12, but milling is performed on 2 of them, and the lower part of the long bearing 50a is cut (refer to figure 1 ), it can be set as four gas channel cavities 12 . Compared with the gas channel cavity 12 of embodiment 3, the exhaust gas in the above design is divided into four places. In addition, since the inner wall 16 becomes four, the up and down operation of the exhaust valve ...

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PUM

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Abstract

The invention discloses a rotary compressor. The rotary compressor adopts the structure that an electrodynamic motor part and a rotary compression mechanism part are built in a sealed housing of the rotary compressor; the compression mechanism part comprises cylinders with compression chambers, pistons and sliding sheets arranged on the compression chambers, as well as crank shafts allowing pistons to rotate in an eccentric manner, a main bearing and an auxiliary bearing both used for slidably supporting the crank shafts and equipped with flanges for sealing the compression chambers, and further comprises an exhaust device arranged on either of the flanges of the main bearing and the auxiliary bearing; the exhaust device comprises a cylindrical hole and gas passage cavities formed by tapping the circumference of the cylindrical hole, as well as exhaust holes formed by tapping the compression chambers from the bottom of the cylindrical hole, an exhaust valve for opening or closing the exhaust holes and a stopping ring for controlling the opening and closing range of the exhaust valve. By adopting the rotary compressor provided by the embodiment of the invention, an effect of reducing loss due to over-compression can be realized, and the operating efficiency, the reliability and the production efficiency of the rotary compressor are improved.

Description

technical field [0001] The present invention relates to a rotary compressor. Background technique [0002] Although systems equipped with rotary compressors are gaining popularity all over the world, in order to increase their efficiency, the improvement and reliability of the compressors are the most important. However, conventional rotary compressors have used tongue-type discharge valves for many years. [0003] In the bearings of conventional rotary compressors equipped with tongue-type discharge valves, since the area of ​​the valve receiving groove is large and the bottom surface is also thin, the bearing rigidity is reduced. Consequently, reliability is reduced due to efficiency loss and bearing deformation due to increased deformation of the compression chamber. Contents of the invention [0004] The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, an object of the present invention is to provide a rota...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04C23/02F04C29/00
Inventor 小津政雄吉国强王玲
Owner GUANGDONG MEIZHI COMPRESSOR