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Multi-cylinder rotary compression assemblies and multi-cylinder rotary compressors

A rotary compressor housing technology, applied in the field of compressors, can solve the problems affecting the cooling capacity and energy efficiency ratio of compressors, affecting the reliability of compression components, and insufficient rigidity of partitions, etc.

Active Publication Date: 2021-01-26
GUANGDONG MEIZHI COMPRESSOR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the related technology, to improve the cooling capacity efficiency, the compression assembly of the rotary compressor adopts a double-cylinder setting while increasing the displacement of a single cylinder. With the increase of the displacement of a single cylinder, in order to reduce the exhaust loss of the compressor, To improve the energy efficiency ratio of the compressor, the hole diameter design of the cylinder exhaust hole is also getting larger and larger, but the excessively large exhaust hole diameter increases the clearance volume of the cylinder, which affects the cooling capacity and energy efficiency ratio of the compressor. Therefore, in order to To solve the above problems, a single cylinder in the compression assembly of the double-cylinder rotary compressor adopts a double exhaust structure design, that is, a four-exhaust structure design for the upper and lower cylinders, including the exhaust gas exhaust on the main and auxiliary bearings and the two partitions. The gas channel is exhausted, but the following defects still exist:
[0003] (1) If the exhaust groove is too small, it will cause a large exhaust loss;
[0004] (2) If the exhaust area is too large, the rigidity of the partition may be insufficient, resulting in deformation of the partition and further affecting the reliability of the compression assembly

Method used

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  • Multi-cylinder rotary compression assemblies and multi-cylinder rotary compressors

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Effect test

Embodiment 1

[0055] Such as figure 2 and image 3 As shown, in any of the above embodiments, preferably, the partition is an annular partition, the outer diameter of the annular partition is D, the inner diameter of the annular partition is d, and the exhaust groove 110 includes at least The exhaust valve groove and the annular groove that communicate with each other, the first exhaust hole 104 is opened on the end surface of the exhaust valve groove, the outer diameter of the annular groove is D1, and the inner diameter of the annular groove is d1 , the radial width of the annular groove is L, wherein D, d, D1, d1 and L satisfy: L=D1-d1≤0.75×(D-d).

[0056] In this embodiment, when the separator is an annular separator, by defining the relationship between the inner diameter, outer diameter and radial width of the annular groove and the outer diameter and inner diameter of the annular separator, on the one hand , which can ensure the rigidity of the partition and reduce the probability...

Embodiment 2

[0058] Such as figure 2 As shown, in any of the above embodiments, preferably, d and d1 also satisfy: D and D1 also satisfy:

[0059] In this embodiment, by further defining the relationship between the inner diameter of the annular separator and the inner diameter of the annular groove, and the relationship between the outer diameter of the annular separator and the outer diameter of the annular groove, it is possible to The annular groove structure is maximized to further improve volumetric efficiency and reduce pressure loss.

Embodiment 3

[0061] Such as image 3 As shown, in any of the above embodiments, preferably, for the same separator, the thickness of the separator is h1, the height of the first exhaust hole 104 is h2, and the depth of the annular groove along the axial direction is h3, wherein , h1, h2 and h3 satisfy: 2×(h1-h3)>3×(h2-0.3).

[0062] In this embodiment, for the same partition, such as the first partition 106 or the second partition 108, the thickness of the partition is h1, the height of the first exhaust hole 104 is h2, and the annular groove is The depth is h3, h1, h2 and h3 satisfy: 2×(h1-h3)>3×(h2-0.3), which realizes the adjustment of the height of the exhaust hole and the depth of the annular groove of the separator in the thickness direction. The limitation further improves the rigidity of the partition setting, ensures the strength of the partition setting, and improves the stability and safety of the compression assembly.

[0063] Specifically, the first exhaust hole 104 is opene...

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Abstract

The present invention proposes a multi-cylinder rotary compression assembly and a multi-cylinder rotary compressor, wherein the multi-cylinder rotary compression assembly includes: a plurality of cylinders arranged in sequence along the axial direction of the rotating crankshaft, and between two adjacent cylinders A baffle assembly is arranged between them, and the baffle assembly is provided with at least two first exhaust holes that communicate with the cavities of two adjacent cylinders, and at least one exhaust hole that communicates with the first exhaust hole. The sum of the smallest cross-sectional areas of all exhaust passages is S1, the sum of the largest cross-sectional areas of all first exhaust holes is S2, and S1 and S2 satisfy: S1 / S2≥0.8. Through the technical solution of the present invention, by setting the minimum value of the ratio of S1 to S2, the exhaust loss of the exhaust channel on the separator assembly can be reduced, the energy efficiency ratio of the compression assembly can be ensured, and the working efficiency of the compression assembly can be improved.

Description

technical field [0001] The invention relates to the field of compressors, in particular to a multi-cylinder rotary compression assembly and a multi-cylinder rotary compressor. Background technique [0002] In the related technology, to improve the cooling capacity efficiency, the compression assembly of the rotary compressor adopts a double-cylinder setting while increasing the displacement of a single cylinder. With the increase of the displacement of a single cylinder, in order to reduce the exhaust loss of the compressor, To improve the energy efficiency ratio of the compressor, the hole diameter design of the cylinder exhaust hole is also getting larger and larger, but the excessively large exhaust hole diameter increases the clearance volume of the cylinder, which affects the cooling capacity and energy efficiency ratio of the compressor. Therefore, in order to To solve the above problems, the single cylinder in the compression assembly of the double-cylinder rotary com...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04C18/356F04C29/12
CPCF04C18/356F04C29/12
Inventor 宋鹏杰谭琴
Owner GUANGDONG MEIZHI COMPRESSOR
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