Multi-Cylinder Rotary Compressor Integrated Separator Plate
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Solution Overview
Problem
Multi-cylinder rotary compressors face limitations in reducing leakage loss, intake pressure loss, and assembly complexity due to restrictions on cylinder width, intake pipe diameter, and rotating shaft assembly, which hinder efficiency and component reduction.
Innovation Solution
A multi-cylinder rotary compressor design with a divided rotating shaft and integrated separator plate allows for increased cylinder width, larger intake ports and pipes, and simplified assembly, reducing leakage and assembly constraints while maintaining sealing performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If the cylinder width (thickness) is made small to reduce leakage loss, then leakage loss is reduced, but the intake pipe diameter is restricted and intake pressure loss increases
Solution Approach 1:
The invention resolves the contradiction by transitioning from a single-cylinder design to a multi-cylinder arrangement. By distributing compression chambers across multiple cylinders aligned axially, the system achieves reduced leakage loss through smaller individual cylinder widths while simultaneously providing sufficient space for large intake pipes by utilizing the radial and axial dimensions of the multi-cylinder configuration.
Solution Approach 2:
The compression system is segmented into multiple independent cylinders, each with its own compression chamber. This segmentation allows each cylinder to have an optimized small width for reduced leakage, while the collective arrangement of multiple cylinders provides the necessary space for large-diameter intake pipes connected to the common intake chamber, thus resolving the dimensional conflict.
2Ease of manufacture
If the diameter of the through-hole of the separator plate is increased to facilitate assembly, then assembly is made easy, but sealing performance cannot be ensured
Solution Approach 1:
The invention introduces an intermediary sealing structure consisting of sealing rings fitted into grooves on the separator plate, positioned between the through-hole and the cylinder chamber. This intermediary sealing mechanism allows the use of a larger through-hole diameter for easier assembly of the rotating shaft while maintaining effective sealing performance through the sealing rings that bridge the gap created by the larger hole.
3Ease of manufacture
If the diameter of the through-hole of the separator plate is increased to allow passage of the eccentric shaft part, then assembly is facilitated, but the number of components increases and assembly complexity arises
Solution Approach 1:
The invention merges the separator plate with the cylinder body to form an integrated structure. The separator plate is not a separate component but is integrally formed as part of the cylinder assembly. This merging eliminates the need for separate sealing components and reduces the overall number of parts, while the through-hole in the integrated structure facilitates easy passage and assembly of the rotating shaft and eccentric shaft parts.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This design enhances efficiency by eliminating restrictions on intake pipe diameter, improving sealing, and reducing the number of components, leading to increased efficiency and simplified assembly processes.
Implementation Method 1
A rotor (piston) that rotates along an inner peripheral surface of each cylinder chamber is rotatably provided in an eccentric shaft part of the rotating shaft (crankshaft), and a compression operation is performed by the eccentric rotation of the rotor.
Data Source
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AI summary
Provided is a rotary compressor that: removes limitations such as restrictions on intake pipe diameter, seal limits on a separator plate, and assembly limits on a rotating shaft; makes possible a limit design exceeding that of the present situation; and achieves increased efficiency, a reduced number of components, and a simplified assembly. A multi-cylinder rotary compressor (1) provided with a plurality of cylinders (8, 9), wherein a rotating shaft (3) provided with a plurality of eccentric shaft parts (4, 5) at prescribed intervals in an axial direction is divided by a center shaft part (6) between the eccentric shaft parts (4, 5) into a rotating shaft having a divided structure that can be integrally linked, and the plurality of cylinders (8, 9) have cylinder chambers (16, 17) formed in both end surfaces, resulting in an integrated-structure cylinder (11) in which a separator plate (10) partitioning the cylinder chambers (16, 17) is integrally formed in the center.