Vertical Compressor Housing with Retaining Wall for Stable Oil Pool
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Solution Overview
Problem
Current vehicle compressors face issues with unstable lubricating oil pools, difficulty in internal oil recycling and lubrication, susceptibility to damage from solid impurities, poor airtightness due to die-casting defects, and inefficient use of installation space.
Innovation Solution
A vertical compressor design with a housing that includes a retaining wall to separate a low-pressure chamber and a controller chamber, using high-strength aluminum alloy for the fixed scroll plate, and a cuboid-shaped structure to minimize horizontal space, along with a stable oil pool and improved airtightness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If a horizontal structure with transmission gear and pump is used, then the compressor can be assembled horizontally, but it is difficult to form a stable lubricating oil pool and internal oil recycling is difficult
Solution Approach 1:
The patent inverts the traditional horizontal structure to a vertical structure. The compressor body, motor, and pump are arranged vertically, allowing the oil pool to form stably at the bottom of the compressor cavity. This inversion resolves the contradiction by enabling stable oil pooling while maintaining compact dimensions.
2Ease of manufacture
If die-casting is used for the housing, then manufacturing cost is reduced, but air holes may be penetrated during machining and result in poor airtightness
Solution Approach 1:
The patent performs preliminary action by forming the housing through die-casting with integrated airtight structures before machining. The housing includes pre-formed sealing surfaces and integrated mounting structures that eliminate the need for post-casting machining operations that could penetrate air holes. This ensures airtightness is built-in during the casting process itself.
3Ease of manufacture
If ordinary cast aluminum alloy is used for the housing, then manufacturing cost is reduced, but the thread tooth for installing suction and exhaust plates is easy to be damaged
Solution Approach 1:
The patent applies composite materials by using high-strength aluminum alloy for the housing and fixed scroll plate, and reinforced aluminum alloy for the moving scroll plate. These enhanced materials provide sufficient strength for thread teeth and mounting structures while maintaining the benefits of aluminum alloy manufacturing, resolving the contradiction between ease of manufacture and structural strength.
4Shape
If a cylindrical shape is used for the compressor, then the structure is simple, but the installation space around the compressor is not well utilized
Solution Approach 1:
The patent transitions from a cylindrical shape to a cuboid shape for the compressor housing. This geometric change allows the compressor to fit more efficiently in the available installation space within the vehicle, maximizing space utilization while maintaining structural simplicity and manufacturing ease.
Data Source
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AI summary
Provided is a compressor, comprising: a housing (3), which is provided with a first opening to form an accommodation space, and comprises a barrier (308) dividing the accommodation space into a low-pressure cavity (309) and a controller cavity (302); a compression mechanism, which comprises a static scroll plate (2) comprising a low-pressure side (202) provided with scroll teeth (201) and a high-pressure side (206) facing away from the scroll teeth (201), and a movable scroll plate (15) located in the accommodation space, wherein a side of the movable scroll plate (15) provided with scroll teeth (1501) is opposite the scroll teeth (201) of the static scroll plate (2), and the scroll teeth (201) of the static scroll plate (2) and the scroll teeth (1501) of the movable scroll plate (15) form a compression cavity; and an electric motor mechanism, which is accommodated in the low-pressure cavity (309), comprises an electric motor rotor (20) and an electric motor stator (12), and drives the movable scroll plate (15) to rotate relative to the static scroll plate (2), so as to compress refrigerant in the compression cavity. The compressor has high reliability, and improves the occupied space utilization rate of the compressor.