Heat Pump Flow Guide Design to Reduce Noise Transmission
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Solution Overview
Problem
Conventional air-water heat pumps emit significant noise due to their sound-emitting components, such as fans and compressors, which affects their operational quietness and efficiency.
Innovation Solution
The heat pump design incorporates a flow guide that encloses the heat pump components on all vertical sides, creating a jacket flow that directs ambient air around the sound-emitting components, reducing noise transmission by deflecting sound waves and using sound-absorbing materials like polystyrene for additional noise reduction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If conventional heat pump components (fan, compressor) are used, then the heat pump can perform its heating and cooling functions, but it emits significant noise affecting operational quietness
Solution Approach 1:
A flow guide is introduced as an intermediary component between the noise-generating heat pump components and the surrounding environment. The flow guide directs ambient air in a jacket flow that envelops the components, serving as a mediator to transport and deflect sound waves away from the housing, thereby reducing noise emission while maintaining component functionality
Solution Approach 2:
The invention converts the harmful noise emitted by the heat pump components into a beneficial effect by using the ambient air flow itself as a carrier. The jacket flow of ambient air not only cools the components but also transports the sound waves away from the housing, transforming the noise problem into a functional airflow pattern that serves dual purposes
2Object-affected harmful factors
If sound-absorbing materials like polystyrene are added for noise reduction, then noise transmission is reduced, but device complexity increases
Solution Approach 1:
The flow guide is designed as a shell-like structure that envelops the heat pump components. This shell structure integrates sound-absorbing materials into its walls, creating a combined flow guidance and sound insulation component. The shell design allows the structure to serve multiple functions (flow direction and noise reduction) without proportionally increasing complexity
Solution Approach 2:
The flow guide structure combines different materials with complementary properties: the structural component provides flow guidance and mechanical strength, while integrated sound-absorbing materials like polystyrene provide noise reduction. This composite approach allows simultaneous achievement of flow control and acoustic insulation functions
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 significantly reduces the sound power level from over 60 dB(A) to 54 dB(A), perceived as half the volume, enhancing the quiet operation of the heat pump.
Implementation Method 1
the flow guide is designed to direct the ambient air around the heat pump component in the form of a jacket flow
Implementation Method 2
using sound-absorbing materials like polystyrene for additional noise reduction
Data Source
Figure 1~2
Figure 3~7
Figure 8
AI summary
The invention relates to a heat pump, comprising a housing (1) through which ambient air flows, a flow guide (2) for the ambient air, which is arranged in the housing (1), and a sound-emitting heat pump component (3) that is associated with the flow guide (2) and interacts with the ambient air. According to the invention, the flow guide (2) is designed such as to surround the heat pump component (3) at its vertical sides like a sheath, thereby producing a sheath flow of ambient air in the housing (1).