Compressor unit for refrigerating machine for domestic or commercial use and refrigerating machine for domestic or commercial use which comprises it
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Solution Overview
Problem
Current refrigerating machines for domestic and commercial use face challenges in reducing energy consumption and noise levels while maintaining performance, durability, reliability, and safety compared to traditional piston-type compressors.
Innovation Solution
A rotary compressor unit with a motor using permanent brushless magnets and a variable speed inverter, combined with an operating shell that dissipates heat and absorbs sound waves, enhancing energy efficiency and reducing noise emissions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If a rotary compressor with permanent brushless magnets and variable speed inverter is used, then energy efficiency is improved and noise is reduced, but device complexity increases
Solution Approach 1:
The patent replaces the traditional piston-type mechanical compression system with a rotary compressor system using permanent brushless magnets. This substitution eliminates mechanical contacts (brushes and commutators), reduces friction and wear, while enabling variable speed control through electronic inversion, thereby improving energy efficiency without proportionally increasing complexity
Solution Approach 2:
The patent implements variable speed control of the rotary compressor through an inverter system, allowing the compression speed to be dynamically adjusted according to cooling demands. This dynamic operation enables the compressor to operate at optimal efficiency points and reduces energy consumption during partial load conditions
2Object-generated harmful factors
If an operating shell with sound absorption and heat dissipation features is added, then noise emissions are reduced and thermal management is improved, but device complexity increases
Solution Approach 1:
The patent combines multiple functions (sound absorption, heat dissipation, and structural housing) into a single integrated operating shell component. This merging approach reduces the number of separate parts needed, simplifies assembly, and lowers overall device complexity while achieving the desired noise reduction and thermal management performance
Solution Approach 2:
The operating shell acts as an intermediary component between the compressor mechanism and the external environment, providing sound absorption to reduce noise emissions and heat dissipation to manage thermal conditions. This intermediary structure protects the internal components while interfacing with the external environment in a controlled manner
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
The solution results in a compressor unit that is quieter, more energy-efficient, and equally durable and safe as traditional models, while maintaining performance levels and simplifying installation.
Implementation Method 1
an operating shell which dissipates heat
Implementation Method 2
absorbs sound waves
Implementation Method 3
a motor 13 with permanent brushless magnets
Data Source
AI summary
A compressor unit (10) of a refrigerating machine (100) for domestic or commercial use has a rotary compressor (11) which has a BLDC or BLAC motor (13), connected to a compression element (12) for actuating it, and a control device (16) connected to the motor (13), for driving it at a variable speed. The compressor (11) further has a a housing (17) which encloses the motor (13) and the compression element (16) and which has a side wall (20) inside of which the stator (14) of the motor (13) is fixed. The compressor unit (10) also comprises an operating shell (21) covering the housing (17) and in thermal communication with the side wall (20). The operating shell (21) dissipates heat transmitted to it by the housing (17) and contrasts or absorbs or dissipate sound waves having a frequency of between 4 kHz and 16 kHz.