Heat source unit for a heat pump
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Solution Overview
Problem
Existing heat source units for heat pumps, particularly those with compressors, generate significant noise due to vibration and sound propagation, which existing insulation and damping mechanisms have not adequately addressed.
Innovation Solution
A heat source unit design featuring a compressor assembly with a support plate and damping mechanism to decouple vibrations, combined with a compressor casing that provides sound insulation and is vibrationally isolated from the compressor housing, along with additional components mounted on the support plate to further dampen vibrations and noise.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a compressor is installed in a heat source unit, then the heat pump can effectively cool and heat, but significant noise is generated due to vibration and sound propagation
Solution Approach 1:
A compressor casing is introduced as an intermediary component between the compressor and the external environment. This casing encloses the compressor and prevents sound waves from propagating outward, while also providing a structural interface for mounting damping mechanisms that further reduce noise transmission to the heat source unit housing.
2Object-generated harmful factors
If damping mechanisms are added to reduce compressor vibrations, then noise propagation is reduced, but device complexity increases
Solution Approach 1:
The damping mechanisms are integrated into the compressor mounting structure, combining the functions of structural support and vibration damping into a unified assembly. The compressor casing itself serves as both the enclosure and the mounting platform for damping elements, eliminating the need for separate complex damping structures.
3Strength
If the compressor casing is in contact with the compressor housing, then structural support is provided, but vibrations are transmitted to the casing and propagated outward
Solution Approach 1:
Damping mechanisms are positioned between the compressor housing and the compressor casing to serve as intermediaries. These dampers maintain the structural connection needed for support while simultaneously absorbing and isolating vibrations, preventing their transmission to the casing and subsequent propagation to the external environment.
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 design significantly reduces noise propagation by effectively isolating compressor vibrations and sounds, improving the overall noise reduction in heat source units.
Implementation Method 1
The support plate is mounted via dampers to the bottom plate
Implementation Method 2
additional damping is provided by a damping mechanism arranged between the compressor, particularly the compressor housing, and the support plate
Implementation Method 3
a compressor casing is provided, which encloses the compressor including the compressor housing
Data Source
Figure 1
Figure 2
Figure 3a~3b
AI summary
Heat source unit (10) for a heat pump having a refrigerant circuit, the heat source unit comprising: an outer casing (13) comprising a bottom plate (14); and a compressor assembly accommodated in the outer casing (13), the compressor assembly (20) comprising a compressor (12) of the refrigerant circuit of the heat pump including a compressor housing (21), a support plate (23) supporting the compressor (12), the support plate (23) being mounted via dampers (43) to the bottom plate (14), and a compressor casing (30) enclosing the compressor (12) and the compressor housing (21), wherein a damping mechanism (25) is arranged between the compressor (12) and the support plate (23), and the compressor casing (30) is fixed to the support plate (23) out of contact with the compressor housing (21).