Scroll Compressor Segmented Drive for Mechanical Stability
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Solution Overview
Problem
Conventional scroll compressors face limitations in performance due to the traditional design and arrangement of components, which can lead to inefficiencies in compression and mechanical stability.
Innovation Solution
The proposed scroll compressor design includes a first scroll with a protruding scroll wrap and a second scroll with an opposite direction scroll wrap, along with a support, motor, and a driving member that connects the first scroll to the motor, allowing for improved mechanical linkage and fluid flow pathways.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the motor directly drives the orbiting scroll through a drive shaft, then the structure is simple, but the mechanical stability and compression efficiency are limited
Solution Approach 1:
The driving system is segmented into a motor, a driving member with bearings, and a first scroll, separating the motor from direct connection to the orbiting scroll. This segmentation improves mechanical stability by isolating the motor's rotational characteristics while maintaining a relatively simple overall structure through modular arrangement.
Solution Approach 2:
A driving member acts as an intermediary between the motor and the first scroll, transmitting rotational motion through bearings. This intermediary component improves mechanical stability by providing precise rotational control and reducing direct mechanical coupling, while the modular design keeps the overall structure manageable.
2Reliability
If the first scroll and second scroll rotate in opposite directions, then the compression cavity forms properly, but the mechanical complexity increases
Solution Approach 1:
Instead of having the motor directly drive the orbiting scroll in a conventional manner, the patent inverts the approach by using a driving member with bearings to control the first scroll's rotation, which then drives the second scroll. This inversion enables opposite-direction rotation for proper compression cavity formation while managing mechanical complexity through standardized bearing components.
Solution Approach 2:
The direct mechanical drive shaft connection is replaced with a bearing-based rotational control system. This substitution improves compression efficiency by enabling precise control of scroll rotation directions while reducing mechanical complexity through the use of well-established bearing technology for motion control.
3Volume of moving object
If all bearings are arranged on one side of the second scroll, then the structural compactness is improved, but the manufacturing precision requirements increase
Solution Approach 1:
Multiple bearings are merged into a single integrated driving member assembly located on one side of the second scroll. This merging achieves structural compactness by consolidating support components while managing manufacturing precision requirements through a modular assembly approach where bearings are pre-positioned in the driving member before final assembly.
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 the compression efficiency and mechanical stability of the scroll compressor by allowing the first and second scrolls to corotate, improving the structural compactness, and optimizing the arrangement of bearings and fluid passages.
Implementation Method 1
a motor driving the first scroll to rotate through the driving member
Implementation Method 2
the first scroll driving the second scroll to rotate
Implementation Method 3
the second scroll wrap and the first scroll wrap cooperating to form a compression cavity for compressing a medium
Data Source
AI summary
A scroll compressor includes a first scroll, the first scroll including a first end plate and a first scroll wrap extending from the first end plate along a first direction; a second scroll, the second scroll including a second end plate and a second scroll wrap protruding from the second end plate along a second direction opposite to the first direction, the second scroll wrap and the first scroll wrap cooperating to form a compression cavity used for compressing a medium; a support located at a side of the second scroll away from the first scroll; a motor; and a driving member rotatably supported by the support and located at the side of the second scroll away from the first scroll. The motor drives the first scroll to rotate through the driving member, and the first scroll drives the second scroll to rotate. The scroll compressor is compact in structure, small in volume, and light in weight.