Compressor and refrigeration cycle device
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Compressors in refrigeration cycle devices face challenges in achieving compactness while maintaining efficient operation and minimizing interference between components, leading to increased suction loss and vibration issues.
Innovation Solution
The compressor design incorporates three suction pipes disposed in a triangular configuration with inclined virtual planes, allowing for a compact accumulator layout that reduces interference and optimizes the flow path cross-sectional areas, thereby enhancing compactness and reducing suction loss.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the compressor is made compact by reducing component sizes, then the overall size decreases, but suction loss increases and vibration problems worsen
Solution Approach 1:
The suction pipes are arranged in a triangular configuration in the horizontal plane rather than vertically stacking them, utilizing horizontal space to maintain adequate pipe dimensions while reducing overall compressor height. This dimensional redistribution allows compact vertical footprint without compromising suction pipe flow characteristics
Solution Approach 2:
The three suction pipes are positioned asymmetrically with their centers forming a triangle, where the first suction pipe center is closer to the compressor main body center than the second and third suction pipe centers. This asymmetric arrangement optimizes flow paths for each compression mechanism unit while maintaining compact overall dimensions
2Volume of moving object
If the accumulator is positioned closer to reduce distance, then compactness improves, but interference between suction pipes and compression mechanism units increases
Solution Approach 1:
The suction pipes are routed through the bottom portion of the accumulator and extend upward to connect with compression mechanism units at different vertical levels. This three-dimensional routing through the bottom of the accumulator minimizes horizontal interference while maintaining compact footprint
Solution Approach 2:
Each suction pipe is designed as a separate, independently routed conduit with its own curved path, allowing each pipe to be optimized for its specific connection without interfering with others. The pipes penetrate the accumulator bottom at different locations and curve to reach their respective compression mechanism units
3Area of stationary object
If suction pipes are arranged in a compact configuration, then device size reduces, but flow path cross-sectional areas decrease increasing suction loss
Solution Approach 1:
The suction pipes utilize vertical space by curving upward from the accumulator bottom to reach compression mechanism units at higher elevations. This vertical arrangement allows adequate pipe diameters and flow cross-sections without increasing the horizontal base area of the accumulator
Data Source
AI summary
A compressor of an embodiment includes three suction pipes. A first center of a first suction pipe, a second center of a second suction pipe, and a third center of a third suction pipe are positioned at vertices of a triangle. A first distance between the first center and a center of a compressor main body is smaller than a second distance between the second center and the center of the compressor main body and a third distance between the third center and the center of the compressor main body. The first suction pipe is connected to a first suction port on an uppermost side. A second virtual plane on which a central axis of a main curved pipe part of the second suction pipe is disposed and a third virtual plane on which a central axis of a main curved pipe part of the third suction pipe is disposed are inclined to opposite sides from each other with respect to a first virtual plane on which a central axis of a main curved pipe part of the first suction pipe is disposed.