Heating and Hot-Water Control for Priority Switching
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Solution Overview
Problem
Conventional heating and hot-water supply apparatuses prioritize hot-water supply over heating operations, potentially suspending heating for extended periods, which can impair user comfort, especially in instantaneous hot-water systems where temperature maintenance is crucial.
Innovation Solution
A heating and hot-water supply apparatus with a control system that adjusts operation priorities based on user requests, prioritizing hot-water supply when warm water is used and prioritizing heating when temperature maintenance is required, using a combustion means, heat exchanger, circulation and bypass passages, and a control means to manage the distribution of heating and hot-water supply heat-medium.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If hot-water supply operation is prioritized over heating operation, then hot-water supply responsiveness is improved, but heating operation is suspended for extended periods which impairs user comfort
Solution Approach 1:
The patent implements dynamic priority switching between hot-water supply operation and heating operation based on real-time system state. The control unit changes the priority of operations according to whether the three-way valve is in hot-water supply mode or heating mode, ensuring that the system adapts its behavior to current operational requirements rather than maintaining a fixed priority hierarchy.
Solution Approach 2:
The control unit continuously monitors the operation mode through feedback from the three-way valve position and adjusts the priority of hot-water supply and heating operations accordingly. This feedback mechanism ensures that when the system transitions between hot-water supply and heating modes, the priority assignment is updated to maintain appropriate responsiveness while preventing excessive suspension of either operation.
2Adaptability or versatility
If heating operation is suspended frequently for hot-water supply, then hot-water supply demand is met, but energy efficiency decreases due to repeated heating cycles
Solution Approach 1:
The patent implements dynamic priority switching that reduces unnecessary suspensions of heating operation. By adjusting priorities based on the three-way valve mode rather than always prioritizing hot-water supply, the system responds to hot-water supply demand while minimizing frequent interruptions to heating operation, thereby improving energy efficiency.
Solution Approach 2:
The control unit uses feedback from the three-way valve position to intelligently adjust operation priorities. This feedback-driven approach ensures that heating operation is suspended only when genuinely necessary for hot-water supply demand, rather than being frequently interrupted, thus maintaining energy efficiency while still responding to hot-water supply requirements.
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 apparatus effectively changes operation priorities to enhance user comfort by ensuring timely heating and hot-water supply, maintaining optimal temperatures in the hot-water supply pipe, even during temperature-maintaining requests, thereby improving overall system performance.
Implementation Method 1
a heat exchanger which exchanges heat between a high-temperature combustion gas generated in the combustion part and a heating heat-medium
Implementation Method 2
a hot-water supply heat exchanger which exchanges heat between the heating heat-medium and water for hot water supply
Data Source
AI summary
A heating and hot-water supply apparatus includes a combustion means, a heat exchanger, a circulation passage, a circulation means, a bypass passage, a distribution means, a hot-water supply heat exchanger, a water entry passage, a hot-water supply passage, and a control means. The circulation passage connects an external heating terminal and the heat exchanger. The water entry passage supplies water of an external hot-water supply pipe and an external water supply pipe to the hot-water supply heat exchanger. The control means controls the distribution means to be adaptable to each of a heating operation and a hot-water supply operation. The control means prioritizes the hot-water supply operation when there is a hot-water supply request for warm water use in addition to a heating request, and prioritizes the heating operation when there is a temperature-maintaining request for maintaining a temperature of the hot-water supply pipe in addition to the heating request.