Electric Compressor Injection Mechanism Integration
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Solution Overview
Problem
The existing scroll type electric compressors require significant modifications and increased assembly costs to add a power saving mechanism, involving multiple parts and complex assembly processes.
Innovation Solution
An electric compressor design that integrates an injection mechanism with a compression mechanism, an electric motor, a motor housing, and an intermediate pressure housing, featuring bolt fastening holes for integral fixation, and an injection port for intermediate pressure refrigerant introduction, reducing the need for extensive part modifications and assembly complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a power saving mechanism is added to the scroll compressor by modifying the cover plate and base plate with multiple passages and valves, then the power saving function is improved, but the device complexity and assembly cost increase significantly
Solution Approach 1:
The invention merges the power saving mechanism with the existing discharge mechanism by integrating the discharge passage and power saving passage into a single cover plate structure. The first and second save holes, along with their respective valves, are incorporated into the same cover plate that houses the discharge passage, eliminating the need for separate components and reducing overall structural complexity.
Solution Approach 2:
The cover plate is designed to serve multiple functions simultaneously: it acts as the discharge passage cover, contains the power saving passages, and houses the save holes with their respective valves. This multi-functional design allows the single cover plate to replace what would traditionally require multiple separate components, thereby reducing device complexity while maintaining the power saving function.
2Adaptability or versatility
If a power saving mechanism is added to the scroll compressor with multiple valves and passages, then the power saving function is improved, but the assembly cost and assembling time increase
Solution Approach 1:
The invention combines multiple functional elements (discharge passage, power saving passages, save holes, and valves) into a single integrated cover plate assembly. This merging reduces the number of separate parts that need to be assembled, thereby decreasing assembly time and cost while maintaining the power saving functionality.
Solution Approach 2:
The cover plate is pre-assembled with all the necessary passages, save holes, and valves integrated into it before installation. This preliminary integration of components means that during final assembly, the entire power saving mechanism is installed as a single unit rather than requiring sequential assembly of multiple separate parts, thus improving assembly efficiency.
3Strength
If the cover plate is fixed to the base plate with bolts and the end cap is mounted, then the structural integrity is improved, but the number of parts and assembly steps increase
Solution Approach 1:
The invention combines the functions of securing the discharge passage and forming the power saving passages into a single cover plate that is fixed to the base plate. This integration reduces the number of separate parts needed to achieve both structural integrity and power saving functionality, thereby reducing device complexity while maintaining strength.
Data Source
AI summary
An electric compressor is provided with a compression mechanism, an electric motor, a motor housing, discharge housing and an intermediate pressure housing. The compression mechanism has a compression chamber and is driven by the electric motor. The motor housing accommodates therein the electric motor and the compression mechanism and formed therein an injection port. The discharge housing has therein a discharge chamber into which compressed refrigerant is discharged. The intermediate pressure housing has therein an introduction port for introducing intermediate pressure refrigerant from an external refrigerant circuit and a communication passage that provides communication between the introduction port and the injection port of the motor housing. The motor housing, discharge housing and the intermediate pressure housing has a bolt fastening hole, and a bolt is inserted in the bolt fastening holes to integrally fix the motor housing, discharge housing and the intermediate pressure housing.