Compressor Sound-Insulating Cover for Condensation Drain Control
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Solution Overview
Problem
Existing compressor sound-insulating structures fail to effectively prevent condensation drips from entering the compressor, leading to potential short circuits, corrosion, and malfunctioning of electrical components, particularly the discharge temperature sensor, due to inadequate drainage and exposure to outside air.
Innovation Solution
A compressor sound-insulating structure featuring a cover member with an inclined upper surface, a step portion for the intake pipe, and a tunnel-like protrusion for the discharge pipe and sensor, which directs drain liquid away from critical components and shields them from external air, preventing accumulation and ensuring precise temperature detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a sound-insulating member with a through-hole and cylindrical portion is used to cover the compressor, then sound insulation is improved, but the risk of drain liquid entering the compressor through the slit portion increases
Solution Approach 1:
The sound-insulating member is segmented into multiple functional portions: a cover portion for sound insulation, a through-hole for refrigerant pipe passage, and a protrusion portion extending from the cover portion to guide drain liquid away from the compressor. This segmentation allows each portion to perform its specific function independently, solving both sound insulation and drain liquid prevention requirements.
Solution Approach 2:
The protrusion portion acts as an intermediary element between the through-hole and the compressor body. It intercepts drain liquid that would otherwise enter through the slit portion and redirects it away from the compressor, serving as a protective mediator without compromising the sound insulation function of the cover portion.
2Measurement precision
If the discharge temperature sensor is externally exposed for temperature detection, then measurement precision is improved, but the sensor becomes vulnerable to drain liquid causing malfunctioning and heat dissipation
Solution Approach 1:
The protrusion portion provides localized protection specifically for the discharge temperature sensor area. It creates a micro-environment that shields the sensor from drain liquid while allowing the sensor to remain externally exposed for accurate temperature detection. This local quality change protects only the critical sensor region without affecting overall sensor functionality.
3Reliability
If a cover member is added to prevent drain liquid entry, then reliability is improved, but device complexity increases
Solution Approach 1:
The protective function against drain liquid is merged with the existing sound-insulating cover member by adding the protrusion portion. Instead of creating a separate protective device, the protection function is integrated into the cover member itself, combining sound insulation and drain liquid prevention in a single component structure.
Solution Approach 2:
The sound-insulating member is designed with multi-functionality: the cover portion provides sound insulation, the through-hole allows refrigerant pipe passage, and the protrusion portion provides drain liquid guidance and protection. This universal design eliminates the need for separate protective devices, reducing overall system complexity while maintaining reliable protection.
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 effectively drains condensation away from the compressor's main unit and terminals, preventing short circuits and corrosion, while maintaining accurate temperature detection and enhancing the controllability of the compressor's control functions.
Implementation Method 1
the cover member has an upper surface which is a surface that is inclined downward toward a position at which drain liquid is drained from the upper surface
Implementation Method 2
compressors installed in air conditioners or the like generate rotational noise from a motor, mechanical noise from operation of a compression mechanism, vibrational noise due to pulsation of refrigerant, and so forth, and they act as noise sources. Because of this, a compressor is normally installed in a state in which the periphery of the compressor is covered with a sound-insulating member, thereby being sound insulated and soundproofed.
Data Source
Figure 1
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Figure 3
AI summary
This sound-insulating structure is for covering the periphery of the compressor (2) and sound insulation of the compressor. A top-portion sound-insulating member (10) that is installed at a top portion of the compressor (2) is provided with a cover member (13) that covers a upper surface of the top-portion sound-insulating member (10), the cover member (13) has un upper surface (18) which is a surface that is inclined downward in a direction in which drain liquid is drained, and the inclined upper surface (18) is provided with a step portion (20) that is provided with a through-hole (19) through which an intake pipe (5B) passes and that is made higher than a surrounding area and a tunnel-like protrusion portion (21) that protrudes upward and in which a discharge pipe (5A) provided with a discharge temperature sensor (16) is disposed.