Heat source unit coupling system

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Solution Overview

Problem

In heat source unit coupling systems, there is an imbalance in the usage frequencies of heat source units capable of performing both space heating and hot water supplying operations, leading to more severe deterioration in these units compared to others.

Innovation Solution

A heat source unit coupling system with multifunctional and single-function units, where priorities for operations are assigned differently based on the type of unit, with single-function units prioritizing space heating and multifunctional units prioritizing hot water supplying, and rotation of priorities based on usage frequency or time to balance usage.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If heat source units capable of performing both space heating and hot water supplying operations are used frequently, then the system can meet both heating demands, but the usage frequency imbalance leads to more severe deterioration in these multifunctional units

Engineering Contradiction:
Improvecapability to perform both space heating and hot water supplying operationsVSAvoidservice life of heat source units
Core Design Contradiction:
Adaptability or versatilityVSReliability

Solution Approach 1:

The patent divides the heat source units into two distinct groups: multifunctional heat source units (capable of both space heating and hot water supply) and single-function heat source units (capable only of space heating). This segmentation allows the system to allocate different operational roles to different units, thereby balancing usage frequency and reducing deterioration of multifunctional units.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent implements a dynamic priority assignment mechanism where the coupling controller adjusts the priority of multifunctional heat source units for space heating operations based on their usage frequency. When a multifunctional unit has been used frequently for hot water supply, its priority for space heating is reduced, allowing single-function units to take over space heating tasks, thus balancing the overall usage and extending the service life of multifunctional units.

Inventive Principle:
Principle #15Dynamics

2Productivity

If priorities for space heating operation are assigned equally among all heat source units, then space heating demand can be met, but multifunctional units are overused for both space heating and hot water supply

Engineering Contradiction:
Improveability to meet space heating demandVSAvoidusage frequency balance among heat source units
Core Design Contradiction:
ProductivityVSEase of operation

Solution Approach 1:

The patent pre-assigns higher priorities for space heating operations to single-function heat source units compared to multifunctional heat source units. This preliminary priority assignment ensures that when space heating is required, single-function units are preferentially utilized, thereby reducing the burden on multifunctional units and balancing their usage frequency across different operational tasks.

Inventive Principle:
Principle #10Preliminary action

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 reduces the imbalance in usage frequencies among heat source units, extending their lifespan by minimizing frequent use of multifunctional units for space heating and single-function units for hot water supplying.

Implementation Method 1

a space heating operation for heating a heat medium supplied from the heat medium return pipe and supplying it to the heat medium outgoing pipe

Methodology Applied
Scientific EffectHeating: Heating

Implementation Method 2

a hot water supplying operation for heating water supplied from the water supply pipe and supplying it to the hot water outlet pipe

Methodology Applied
Scientific EffectHeating: Heating

Data Source

PatentUS20260022843A1Heat source unit coupling system
Publication Date: 2026.01.22 RINNAI CORP
  • US20260022843A1 patent drawing
  • US20260022843A1 patent drawing
  • US20260022843A1 patent drawing

AI summary

A heat source unit coupling system may include a heat medium circulation channel including a heat medium outgoing pipe and a heat medium return pipe; a water distribution channel including a water supply pipe and a hot water outlet pipe; one or more multifunctional heat source units connected in parallel to the heat medium circulation channel and the water distribution channel; one or more single-function heat source units connected in parallel to the heat medium circulation channel; and a coupling controller communicable with the one or more multifunctional heat source units and the one or more single-function heat source units. The one or more multifunctional heat source units may be configured to perform a space heating operation; and a hot water supplying operation. The one or more single-function heat source units may be configured to perform the space heating operation.