Air-Conditioning Heat Medium Feedback for Separated Flow Circuits
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Solution Overview
Problem
In air-conditioning devices with separate indoor and outdoor unit flow systems, the outdoor unit cannot detect the temperature and pressure of the heat medium flowing through the indoor unit, leading to inefficient operation and reduced air-conditioning efficiency.
Innovation Solution
An air-conditioning device with a master-side heat source device and load devices that exchange heat medium information, allowing the master-side load device to generate instruction information based on detected operation states and transmit it to the heat source devices to optimize the temperature of the heat medium flowing through the system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the flow system of the indoor unit is separated from the flow system including the compressor of the outdoor unit, then the refrigerant amount can be reduced and combustion risk is lowered, but the outdoor unit cannot detect the temperature and pressure of the heat medium flowing through the indoor unit, leading to inefficient operation
Solution Approach 1:
The patent introduces a feedback mechanism where the indoor unit detects the temperature and pressure of the heat medium and transmits this information to the outdoor unit. The outdoor unit then adjusts its operation based on this feedback, enabling efficient control despite the separated flow systems. This resolves the contradiction by maintaining operational efficiency through information feedback while keeping the systems physically separated for safety.
2Device complexity
If the outdoor unit operates without detecting the actual operation state of the indoor unit, then the system structure remains simple and separate, but the outdoor unit performs wasteful operation causing deteriorated air-conditioning efficiency
Solution Approach 1:
The patent introduces an information transmission mechanism that acts as an intermediary between the indoor and outdoor units. The indoor unit's operation state information is transmitted to the outdoor unit, enabling the outdoor unit to adjust its operation accordingly. This intermediary information flow enables efficient coordination without requiring a complex integrated flow system, thus reducing wasteful energy consumption while maintaining relatively simple system structure.
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 solution enables the heat source devices to perform operations aligned with the load devices' states, improving air-conditioning efficiency by ensuring appropriate temperature adjustments and reducing wasteful energy consumption.
Implementation Method 1
each including a second heat medium circuit through which a second heat medium circulates, and each configured to heat or cool the first heat medium by internally exchanging heat between the first heat medium and the second heat medium
Implementation Method 2
each configured to perform air-conditioning operation of an air-conditioned space by exchanging heat between the first heat medium and air of the air-conditioned space
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
An air-conditioning device includes, in a first heat medium circuit through which a first heat medium flows, one or more heat source devices cooling or heating the first heat medium, a plurality of load devices performing air-conditioning operation by exchanging heat between the first heat medium and air in an air-conditioned space, and circulation generation means causing the first heat medium to circulate through the first heat medium circuit. One of the one or more heat source devices is a master-side heat source device, and one of the plurality of load devices is a master-side load device. The master-side load device acquires detection information representing an operation state of each of the load devices, generates instruction information to control at least any of all or a part of the one or more heat source devices and the circulation generation means, based on the detection information, and transmits the instruction information to the master-side heat source device. The master-side heat source device controls at least any of all or a part of the one or more heat source devices and the circulation generation means, based on the received instruction information.