Boiler Connection System with Bypass Valve for Heat Exchanger Load Management
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Solution Overview
Problem
Existing boiler connection systems for hot water supply and space heating with multiple heat sources lack efficient operation control, leading to unnecessary load on heat exchangers and potential deterioration, as they do not effectively differentiate between space heating and hot water supply operations.
Innovation Solution
A boiler connection system with a heat medium circulating passage, water flow passage, and multiple heat source devices connected in parallel, featuring a first heat exchanger, bypass pipe, pressure-feed device, flow passage switching valve, and second heat exchanger, controlled by a controller to manage heat medium flow between heat medium outgoing and bypass pipes for space heating and hot water supply operations, preventing unnecessary load on heat exchangers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple heat source devices are connected in parallel without differentiated control, then the system can provide both space heating and hot water supply, but unnecessary load is applied to inactive heat exchangers causing deterioration
Solution Approach 1:
The system dynamically switches the operational state of heat exchangers based on demand type. During hot water supply operations, the flow passage switching valve redirects heat medium flow to bypass the heat exchanger, preventing unnecessary thermal loading and deterioration while maintaining the system's dual functionality for both space heating and hot water supply
Solution Approach 2:
The heat medium heating circuit is segmented into a main path through the heat exchanger and a bypass path. The flow passage switching valve controls which path the heat medium takes, allowing independent control of heat exchanger operation while maintaining overall system functionality for both space heating and hot water supply modes
2Productivity
If the system uses all heating capacities during hot water supply demand, then quick hot water supply is achieved, but additional valves would be needed to control heat medium flow differentiation
Solution Approach 1:
The flow passage switching valve serves multiple functions: it controls heat medium flow during space heating operations, redirects flow during hot water supply operations, and enables all heat source devices to contribute to hot water heating. This single valve manages the entire heat medium circulation control for both operational modes without requiring additional valves
Solution Approach 2:
The bypass pipe merges with the heat medium outgoing pipe to create a unified output path that receives heat medium from either the heat exchanger or the bypass path. This merging allows the system to utilize all heating capacities during hot water supply while maintaining a simple valve control 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
The system efficiently manages heat medium flow to prevent load on inactive heat exchangers, suppressing deterioration and allowing quick hot water supply by utilizing all heating capacities during demand, without the need for additional valves.
Implementation Method 1
a first heat exchanger configured to heat a heat medium by means of combustion heat of a burner
Implementation Method 2
a first heat exchanger configured to heat a heat medium by means of combustion heat of a burner
Implementation Method 3
a second heat exchanger provided on the bypass pipe and configured to exchange heat with the heat medium flowing through the bypass pipe to heat water supplied from the water supply pipe
Data Source
AI summary
A boiler connection system includes: a plurality of heat source device; and a controller. Each of the plurality of heat source devices includes: a first heat exchanger; a heat medium heating circuit branching at one end thereof from a heat medium return pipe and connected at another end thereof to a heat medium outgoing pipe via the first heat exchanger; a bypass pipe connected to the heat medium heating circuit so as to bypass the first heat exchanger; a pressure-feed device provided on the heat medium heating circuit; a flow passage switching valve; a second heat exchanger provided on the bypass pipe; and a water heating circuit branching at one end thereof from the water supply pipe and connected at another end thereof to a hot water supply pipe via the second heat exchanger.