Scroll machine with injection and cooling system
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Solution Overview
Problem
Existing scroll machines with injection systems require complex component geometries for guiding the medium to be injected, leading to inefficiencies and increased heat input.
Innovation Solution
The scroll machine design incorporates an intermediate floor that bypasses the high-pressure chamber, routing the medium injection line through it, and uses a simple, decoupled spiral unit to reduce heat input and assembly complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the medium injection line is routed through the high-pressure chamber, then the injection path is direct, but heat input to the medium increases and component geometry becomes complex
Solution Approach 1:
The patent divides the injection system into separate components: the injection line is routed through the intermediate floor structure rather than through the high-pressure chamber, segmenting the thermal and functional paths. This allows the medium to be injected without unnecessary heat exposure while maintaining a manageable component geometry through modular design
Solution Approach 2:
The intermediate floor acts as an intermediary structure that the injection line passes through. This mediator element allows the injection line to bypass the high-pressure chamber's thermal environment while still providing structural support and maintaining system integrity, thus reducing heat input without increasing overall complexity
2Strength
If the spiral unit is directly connected to the high-pressure chamber, then structural support is provided, but the spiral unit is subjected to high pressure forces
Solution Approach 1:
The intermediate floor serves as a mediator between the high-pressure chamber and the spiral unit. It provides the necessary structural support and strength to withstand high-pressure forces, while the spiral unit remains decoupled from these forces, reducing mechanical stress and improving reliability
Solution Approach 2:
The system is segmented into distinct functional zones: the high-pressure chamber for pressure containment, the intermediate floor for structural support and force distribution, and the spiral unit for fluid handling. This segmentation allows each component to be optimized for its specific function without being subjected to incompatible forces
3Ease of manufacture
If the injection line is routed simply, then assembly is easier, but heat input to the medium increases
Solution Approach 1:
The intermediate floor performs multiple functions simultaneously: it provides structural support for the high-pressure chamber, serves as a mounting surface for the spiral unit, and acts as a conduit path for the injection line. This multi-functionality allows the injection line to be routed simply through an existing structural element without adding separate cooling pathways, thus maintaining assembly simplicity while reducing heat input
Data Source
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AI summary
The present invention relates to a scroll machine (2) with an injection system for a medium, comprising a machine housing (10) with a longitudinal axis (X), wherein in the machine housing (10) along the longitudinal axis (X) are arranged a first spiral unit (100) with a spiral channel (120) formed by a first spiral rib (110), a second spiral unit (200) with a first side (201) and a second side (202) opposite the first side (201), wherein a spiral channel (220) formed by a second spiral rib (210) is provided on the first side (201), and a high-pressure chamber (30) which is arranged on the second side (202) of the second spiral unit (200) and is connected to the spiral channel (220) via a passage (260) in the second spiral unit (200), wherein the first spiral unit (100) and the second spiral unit (200) are arranged to form pressure chambers interlockwherein the first spiral unit (100) can be moved along an orbital path relative to the second spiral unit (200), wherein an intermediate floor (50) is provided along the longitudinal axis (X) between the second spiral unit (200) and the high-pressure chamber (30), wherein a line (70) is provided for the injection of the medium, connecting a housing opening (13) with an injection opening (270) in the spiral channel (220) of the second spiral unit (200), and wherein the line (70) is guided from the housing opening (13) past the high-pressure chamber (30) through the intermediate floor (50). Furthermore, the present invention relates to a refrigeration system.