Heating and hot water supplying device
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Solution Overview
Problem
Existing heating and hot water supplying devices struggle to maintain sufficient heating capacity during simultaneous heating and hot water supplying operations, leading to potential discomfort due to reduced hot water flow rates or lower temperatures, especially when the heating capacity is insufficient for increased hot water supply loads or unfavorable environmental conditions.
Innovation Solution
A heating and hot water supplying device equipped with a prohibit switch that allows users to set and enforce a prohibition on simultaneous heating and hot water supplying operations when capacity is insufficient, along with an external air temperature detection system to invalidate the prohibition when the air temperature is warm, ensuring adequate heating capacity and prioritizing hot water supply when necessary.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the heating and hot water supplying device performs simultaneous heating and hot water supplying operations, then the convenience and usability are improved, but the heating capacity becomes insufficient leading to reduced hot water flow rate or temperature
Solution Approach 1:
The invention dynamically adjusts the flow rate distribution of the heating medium between the heating terminal and hot water supply based on real-time temperature measurements. The control unit continuously monitors the temperature difference between the heating medium and tap water, and automatically optimizes the flow distribution to maintain both heating performance and hot water supply quality during simultaneous operations.
Solution Approach 2:
The system changes operational parameters (flow rates, temperature differentials) based on detected conditions. By measuring the temperature difference between heating medium and tap water, the system adjusts the flow rate ratio dynamically, transforming fixed-parameter operation into variable-parameter operation that adapts to maintain heating capacity while enabling simultaneous hot water supply.
2Productivity
If the heating medium flow rate to hot water supply is increased, then the hot water supply capacity is improved, but the heating capacity for the heating terminal is reduced
Solution Approach 1:
The invention optimizes the flow rate parameter of the heating medium by adjusting it according to the detected temperature difference. When the temperature difference is large, the system increases hot water supply flow; when the temperature difference is small, it reduces hot water flow to preserve heating capacity. This dynamic parameter adjustment resolves the contradiction between hot water supply capacity and heating power.
Solution Approach 2:
The system implements feedback control by continuously detecting the temperature difference between the heating medium and tap water, then using this information to adjust the heating medium flow rate distribution. This closed-loop feedback mechanism ensures that hot water supply capacity is maximized only when heating capacity remains sufficient, preventing the deterioration of heating power.
3Power
If the heating and hot water supplying device operates in heating mode only, then the heating capacity is maintained, but the hot water supplying function cannot be performed simultaneously
Solution Approach 1:
The invention enables the heating device to perform multiple functions simultaneously - both space heating and hot water supply. By introducing a bypass passage with a heat exchanger and implementing dynamic flow control, the system transforms from a single-function heating device into a multi-functional device that can operate in heating-only mode, hot water-only mode, or simultaneous operation mode, greatly enhancing operational flexibility and adaptability.
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 configuration ensures that the device can perform each operation effectively, prohibits simultaneous operations when capacity is insufficient, reduces user discomfort, and maintains convenience by allowing simultaneous operations when external air temperature is favorable, thus ensuring a stable and efficient hot water supply.
Implementation Method 1
The heating medium which flows with an operation of the circulation pump is heated in the heat exchanger using combustion heat of the combustion means
Implementation Method 2
The tap water supplied from the water supply passage is heated by heat exchange with the heating medium in the heat exchanger for hot water supply
Data Source
AI summary
A heating and hot water supplying device includes: a circulation passage that connects a heat exchanger and an external heating terminal; a bypass passage that bypasses the heating terminal by branching from the circulation passage; a hot water supply passage for supplying the hot water heated to a preset hot water supply temperature by the heat exchanger for hot water supply; a control unit that controls operations in which this plurality of units are used; and an operation terminal for performing various operations. A distribution valve is provided in the branching portion of the bypass passage. The distribution valve adjusts the distribution ratio so that each of a heating operation, a hot water supplying operation, and a simultaneous heating and hot water supplying operation is possible. The operation terminal is provided with a prohibit switch to prohibit the simultaneous heating and hot water supplying operation.