Refrigerating cycle device having wiring switch part that switches between wiring states
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Solution Overview
Problem
Conventional air conditioner systems face inefficiencies when switching to a delta connection during high-speed motor rotation, leading to difficulties in raising the compressor temperature effectively.
Innovation Solution
A refrigerating cycle device with a wiring switch part that changes the motor wiring state from a high-efficiency configuration to a lower-efficiency configuration when the motor's rotational speed exceeds a predetermined value, allowing for efficient heating of the refrigerant by switching to a wiring state with a larger electromotive force during high-speed operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the wiring state is switched to a delta connection during high-speed rotation of the motor, then the efficiency of the motor is improved, but the temperature in the compressor does not readily raise
Solution Approach 1:
The patent applies dynamics by making the wiring state changeable based on operating conditions. The wiring switch part dynamically switches between star connection and delta connection according to the rotational speed of the motor and the required compressor temperature, allowing the system to adapt its electrical configuration to different operational requirements rather than being fixed in one state.
Solution Approach 2:
The patent changes the electrical parameters of the motor by switching between different wiring configurations (star and delta connections). This parameter change allows the system to select between high efficiency (delta connection) and high temperature generation (star connection) based on the current operational needs, directly addressing the contradiction between motor efficiency and compressor temperature elevation.
2Use of energy by moving object
If the wiring state is switched to a delta connection, then the motor efficiency is improved, but the heating capability is reduced
Solution Approach 1:
The wiring switch part dynamically adjusts the motor's electrical configuration based on operational requirements. During defrosting operations or when heating capability is needed, the system switches to star connection which provides higher heating power. During normal high-speed operations where efficiency is prioritized, the system uses delta connection, thus dynamically balancing efficiency and heating capability.
Solution Approach 2:
By changing the wiring configuration parameters between star and delta connections, the patent modifies both the efficiency characteristic and the heating power characteristic of the motor. This parameter change enables the system to optimize for either efficiency or heating capability depending on the operational context, resolving the contradiction between these two performance aspects.
3Temperature
If the wiring state is switched to a star connection during high-speed rotation, then the compressor temperature raises effectively, but the motor efficiency decreases
Solution Approach 1:
The system dynamically determines the optimal wiring state based on real-time operational conditions. When compressor temperature elevation is the priority (such as during defrosting), the wiring switch part activates star connection despite the efficiency trade-off. When efficiency is the priority during normal operations, delta connection is used. This dynamic decision-making resolves the contradiction by allowing both modes to be used appropriately.
Solution Approach 2:
The patent utilizes parameter changes in the electrical configuration to switch between two distinct operational modes: star connection for temperature-critical operations and delta connection for efficiency-critical operations. This parameter switching mechanism allows the system to accept temporary efficiency reductions when temperature elevation is required, thus resolving the contradiction between these competing requirements.
4Use of energy by moving object
If the wiring state is fixed in a high-efficiency configuration, then the motor operates efficiently, but the system cannot adapt to different operational requirements
Solution Approach 1:
The patent makes the wiring state dynamic rather than fixed. The wiring switch part responds to different operational conditions (defrosting mode, heating mode, cooling mode, rotational speed thresholds) by switching between star and delta connections. This dynamic adaptability allows the system to maintain high efficiency when appropriate while also being capable of providing enhanced heating capability when needed, thus achieving both efficiency and versatility.
Solution Approach 2:
The motor system is designed with multi-functionality by incorporating a wiring switch part that enables the same motor to operate in different wiring configurations. This allows the motor to serve multiple functions: high-efficiency operation during normal conditions and high-power heating during defrosting or heating operations. The universal design accommodates various operational requirements without requiring separate motors for different 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 approach effectively raises the compressor temperature and enhances refrigerant heating efficiency by impairing motor efficiency during high-speed operations, reducing defrosting time and improving heating capability at the start of heating operations.
Implementation Method 1
The motor generates power for compressing the refrigerant by rotating a rotor with voltage applied to a plurality of wirings
Implementation Method 2
The wiring switch part switches between a plurality of wiring states by changing connection between the plurality of wirings
Data Source
AI summary
A refrigerating cycle device includes a compressor, a motor, and a wiring switch part. The compressor compresses a refrigerant. The motor generates power for compressing the refrigerant by rotating a rotor with voltage applied to a plurality of wirings. The motor is disposed in the compressor. The wiring switch part switches between a plurality of wiring states by changing connection between the plurality of wirings. When a rotational speed of the rotor exceeds a predetermined value, the wiring switch part switches to a first wiring state of the plurality of wiring states. The first wiring state differs from a second wiring state of the plurality of wiring state. Efficiency of the second wiring state is highest at the rotational speed.