Package Fluid Machine Inverter Cooling Layout With Direct Airflow
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Solution Overview
Problem
The existing package-type fluid machines have a reduced cooling efficiency due to the separation of the cooling fan and inverter by the length of the motor, leading to a decrease in the flow rate of cooling air and inefficient cooling of the inverter.
Innovation Solution
A package-type fluid machine design where the cooling fan is positioned adjacent to the machine chamber, with an inverter chamber adjacent to the machine chamber, and an inverter intake port is provided in the inverter chamber to enhance airflow directly to the inverter, reducing the distance between the cooling fan and intake port.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the inverter is disposed in an upper portion with respect to the compression portion and separated from the cooling fan by the length of the motor, then the disposition of components is flexible and productivity is improved, but the flow rate of cooling air is reduced and cooling efficiency decreases
Solution Approach 1:
The patent repositions the inverter from a horizontal arrangement (separated by motor length in the lateral direction) to a vertical arrangement (disposed below the compression portion). This dimensional change allows the cooling fan to be positioned directly above the inverter, creating a direct cooling path that increases cooling air flow rate while maintaining flexible component disposition and productivity
2Adaptability or versatility
If the inverter and cooling fan are separated by the length of the motor in the lateral direction, then component layout flexibility is improved, but the interval between intake port and cooling fan increases causing reduced cooling air flow rate
Solution Approach 1:
The patent transitions from a lateral (horizontal) arrangement to a vertical arrangement, placing the inverter directly below the compression portion and cooling fan. This vertical stacking reduces the horizontal distance between the cooling fan and inverter intake port, significantly increasing cooling air flow rate while preserving layout flexibility through vertical space utilization
3Device complexity
If the cooling fan is positioned far from the inverter intake port, then component disposition is simplified, but cooling efficiency decreases due to reduced cooling air flow rate
Solution Approach 1:
The patent merges the cooling fan and inverter positions by disposing the inverter directly below the compression portion with the cooling fan positioned to blow cooling air directly onto the inverter. This merging of positions eliminates long cooling air paths and complex ducting, simplifying component disposition while maximizing cooling efficiency through direct cooling
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 configuration improves the cooling efficiency of the inverter by ensuring a higher flow rate of cooling air, effectively addressing the inefficiencies in existing designs.
Implementation Method 1
The cooling fan is driven to cause the cooling gas to flow from the inverter intake port to the opening to cool the inverter
Data Source
AI summary
A package-type fluid machine includes a compressor unit including a compression portion that compresses a fluid, a motor that drives the compression portion, and a cooling fan that is driven by the motor; a machine chamber in which the compressor unit is disposed; an inverter chamber which is adjacent to the machine chamber and in which an inverter is disposed; a partition wall that partitions off the machine chamber from the inverter chamber and has an opening; and an inverter intake port that is disposed in the inverter chamber to take in a cooling gas. The cooling fan is disposed on a side of the machine chamber, the opening being located on the side. The cooling fan is driven to cause the cooling gas to flow from the inverter intake port to the opening to cool the inverter.