Compressor and air conditioner
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Solution Overview
Problem
Frequency convertible compressors in air-conditioning systems face challenges in achieving precise temperature control due to their minimum cooling capacity being too large, leading to inefficient energy consumption.
Innovation Solution
A compressor design that includes a volume variation control cavity connected to both the gas inlet and outlet, allowing for pressure changes to drive a sliding vane to abut or separate from the main shaft, thereby reducing the minimum output capacity through volume variation, enabling more precise temperature control and energy conservation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If frequency convertible compressor is used to adjust cooling capacity by controlling compressor speed, then temperature control precision is improved, but minimum cooling capacity remains too large causing energy waste
Solution Approach 1:
The compressor is divided into two independent compression systems: a first compression system with a first cylinder and second compression system with a second cylinder. Each system has its own sliding vane (first sliding vane and second sliding vane) that can be independently controlled. This segmentation allows the compressor to operate at different capacity levels by selectively engaging or disengaging each compression system, thereby achieving minimum cooling capacity reduction without wasting energy.
Solution Approach 2:
The patent employs dynamic control of sliding vane positions through volume variation control cavities. The sliding vanes can dynamically adjust their positions along the main shaft based on control signals, enabling continuous modulation of compression volume. This dynamic adjustment mechanism allows the compressor to adapt its cooling capacity in real-time, achieving both precise temperature control and energy efficiency by matching actual cooling demands.
2Use of energy by moving object
If compressor speed is reduced to lower cooling capacity, then energy consumption is reduced, but minimum cooling capacity remains too large for precise temperature control
Solution Approach 1:
The patent changes the compression volume parameter by adjusting sliding vane positions within the cylinders rather than solely relying on speed reduction. By modifying the effective compression volume through sliding vane displacement controlled by volume variation control cavities, the system can achieve lower cooling capacities while maintaining operational efficiency. This parameter change approach enables precise temperature control at reduced capacities without the energy waste associated with traditional speed-based modulation.
3Power
If sliding vane is separated from main shaft to reduce compression volume, then minimum output capacity is reduced, but system complexity increases
Solution Approach 1:
The patent uses pneumatic pressure control through volume variation control cavities to manage sliding vane positions. Control gas or liquid is introduced into these cavities to push or pull the sliding vanes along the main shaft, achieving separation or contact states. This pneumatic control mechanism provides a simple and reliable way to adjust compression volume without complex mechanical linkages, thereby reducing output capacity when needed while minimizing the increase in system complexity.
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 allows for more precise temperature control and reduces power consumption by adjusting the compressor's output capacity, achieving energy conservation through volume variation.
Implementation Method 1
the volume variation control cavity is configured to be selectively connected to a gas inlet and a gas outlet of the compressor, so as to change gas pressure in the volume variation control cavity, and drive the sliding vane to abut against or be separated from the main shaft by the gas pressure in the volume variation control cavity
Data Source
AI summary
A compressor and an air conditioner are provided. The compressor includes a main shaft, a first cylinder and a second cylinder. The main shaft sequentially passes through the first cylinder and the second cylinder and can rotate therein, to compress refrigerant entering the first cylinder and the second cylinder. The second cylinder has an inner cavity capable of receiving the main shaft. A volume variation control cavity in communication with the inner cavity is provided in a side wall of the inner cavity, and a sliding vane is provided inside the volume variation control cavity. The volume variation control cavity can be selectively connected to a gas inlet and a gas outlet of the compressor, to change gas pressure in the volume variation control cavity, and drive the sliding vane to abut against or be separated from the main shaft by the gas pressure in the volume variation control cavity.