Compressor with Nested Piston Chambers for Two-Stage Compression
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Solution Overview
Problem
Traditional compressors suffer from low compression efficiency, high production costs, complex structures, and maintenance difficulties due to asynchronous piston compressions, leading to reduced service life and increased heat generation.
Innovation Solution
A compressor design featuring a cylinder block divided into two compression chambers with synchronized pistons, a heat dissipation component, and a purification system, allowing for two-stage compression within a single cylinder block, reducing volume and heat generation while improving efficiency and extending service life.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single-cylinder compressor is used, then the structure is simple, but the compression efficiency is low and compression capacity is poor
Solution Approach 1:
The single cylinder block is segmented into two independent compression chambers (first compression chamber and second compression chamber) that operate simultaneously. Each chamber has its own piston, inlet port, and outlet port, allowing parallel compression operations while maintaining a compact single-cylinder structure.
Solution Approach 2:
The patent introduces a spatial dimension by dividing the cylinder block's internal space into two separate compression chambers using a partition wall. This allows two independent compression cycles to occur simultaneously within the same cylinder block, effectively doubling the compression capacity without increasing the external footprint.
2Productivity
If a multi-cylinder compressor is used, then the compression capacity increases, but the volume is large, structure is complicated, and production cost is high
Solution Approach 1:
Two compression chambers that would traditionally require separate cylinders are merged into a single cylinder block. The partition wall divides the internal space, but the outer casing remains unified, reducing overall volume and simplifying the structure compared to multi-cylinder configurations while maintaining dual-compression capability.
Solution Approach 2:
The second compression chamber is nested within the spatial envelope of the first compression chamber by using the partition wall to create concentric or adjacent compression spaces within the same cylinder block, maximizing space utilization and reducing external dimensions.
3Productivity
If asynchronous piston compressions are used, then multiple compression stages are achieved, but the failure rate is high and maintenance is difficult
Solution Approach 1:
Both pistons are designed to perform compression actions simultaneously in a synchronized periodic manner, driven by the same crankshaft. This synchronized periodic action ensures that both compression chambers operate in unison, reducing mechanical stress imbalances and improving reliability compared to asynchronous operations.
Solution Approach 2:
The crankshaft serves multiple functions by simultaneously driving both pistons through connected rods, and both compression chambers process gas through identical inlet and outlet port configurations. This universal design simplifies maintenance procedures as both sides use the same components and operating principles.
4Device complexity
If electric motor directly drives piston, then the structure is simple, but heat generation is large and service life is reduced
Solution Approach 1:
The heat generation problem is extracted and isolated by providing dedicated cooling channels that circulate cooling medium around the electric motor and piston areas. This separates the heat management function from the compression function, allowing the motor and pistons to be cooled independently without affecting the compression chambers' operation.
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
The design enhances compression efficiency, increases capacity, reduces operating costs, and prolongs the compressor's service life by enabling two-stage compression within a compact structure and effectively managing heat and maintenance.
Implementation Method 1
a space between an outer wall of the spacer block and an inner wall of the cylinder block defines the first compression chamber, and an inner wall space of the spacer block defines the second compression chamber
Implementation Method 2
drives a piston through operation of an electric motor so as to compress the gas
Data Source
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AI summary
The embodiment of the present disclosure provides a compressor, which includes a cylinder block and a piston assembly arranged inside the cylinder block; the piston assembly comprises a first piston, a second piston arranged inside the first piston, and a movable assembly connected to the first piston, and the movable assembly is configured to drive the first piston and the second piston to reciprocate; the cylinder block is provided with a first compression chamber that defines a space for the first piston to move up and down, and when the first piston reciprocates in the first compression chamber, a gas outside the cylinder block is suctioned in, and is compressed to generate a gas after first compression; the cylinder block is provided with a gas storage chamber for storing the gas after the first compression, and the gas storage chamber is connected to the first compression chamber; and the cylinder block is also provided with a second compression chamber that defines a space for the second piston to move up and down, the second compression chamber is connected to the gas storage chamber, and when the second piston reciprocates in the second compression chamber, the gas after the first compression is suctioned from the gas storage chamber and is compressed to generate a gas after second compression. The present disclosure has a small volume, a high compression efficiency and a low failure rate.