Control method of heat pump system and heat pump system

Solution Overview

Problem

Heat pump systems struggle to simultaneously meet heating and hot water production demands, particularly in low-temperature environments, leading to reduced performance and user discomfort.

Innovation Solution

A control method for heat pump systems that prioritizes operation modes based on user demand, switching between hot water production and air conditioning modes when specific conditions are met, using a three-way valve and controller to manage operation parameters such as duration and temperature thresholds.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If the heat pump system operates in hot water production mode, then hot water production effect is improved, but air conditioning effect deteriorates

Engineering Contradiction:

Improvehot water production effectVSAvoidair conditioning effect

Core Design Contradiction:

ProductivityVSProductivity

Solution Approach 1:

The control method implements periodic switching between hot water production mode and air conditioning mode based on operation duration thresholds. The system alternates between producing hot water and providing air conditioning, ensuring both functions receive periodic service rather than operating continuously in one mode only.

Inventive Principle:

Principle #19Periodic action

Solution Approach 2:

The system dynamically adjusts operation modes based on real-time parameter monitoring. When operation duration exceeds a threshold or temperature differences fall within acceptable ranges, the system automatically transitions between modes, making the operational state flexible and adaptive rather than fixed.

Inventive Principle:

Principle #15Dynamics

2Productivity

If the heat pump system operates in air conditioning mode, then air conditioning effect is improved, but hot water production effect deteriorates

Engineering Contradiction:

Improveair conditioning effectVSAvoidhot water production effect

Core Design Contradiction:

ProductivityVSProductivity

Solution Approach 1:

The control method implements periodic switching between hot water production mode and air conditioning mode based on operation duration thresholds. The system alternates between producing hot water and providing air conditioning, ensuring both functions receive periodic service rather than operating continuously in one mode only.

Inventive Principle:

Principle #19Periodic action

Solution Approach 2:

The system dynamically adjusts operation modes based on real-time parameter monitoring. When operation duration exceeds a threshold or temperature differences fall within acceptable ranges, the system automatically transitions between modes, making the operational state flexible and adaptive rather than fixed.

Inventive Principle:

Principle #15Dynamics

3Productivity

If the heat pump system prioritizes one operation mode, then that mode's performance is improved, but the other mode's performance deteriorates

Engineering Contradiction:

Improveoperation mode performanceVSAvoidalternative operation mode performance

Core Design Contradiction:

ProductivityVSProductivity

Solution Approach 1:

The system pre-establishes switching criteria including operation duration thresholds and temperature difference ranges before operation begins. These predetermined conditions guide the mode switching decisions, allowing the system to proactively transition between modes rather than reactively responding to extreme conditions.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The control method continuously monitors operation duration and temperature parameters, using this feedback to determine when to switch between modes. The system adjusts its operation based on real-time performance data, creating a closed-loop control system that balances both functions over time.

Inventive Principle:

Principle #23Feedback

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

Ensures simultaneous and efficient operation of both hot water production and air conditioning functions, enhancing user comfort by adapting to changing demands.

Implementation Method 1

a second end connected to a domestic water tank and a third end connected to an end device

Methodology Applied

Scientific EffectHeat exchange: Heat Exchanger

Data Source

PatentUS20260016193A1Control method of heat pump system and heat pump system

Publication Date: 2026.01.15 NINGBO AUX ELECTRIC CO LTD

AI summary

The present disclosure provides a control method of the heat pump system and the heat pump system, wherein the method includes: determining priority information of an operation mode, wherein the operation mode includes: a hot water production mode and an air conditioning mode; controlling the heat pump system to operate according to an operation mode with the higher priority information, and acquiring the corresponding operation parameter; determining whether the operation parameter satisfies a preset condition; and controlling the heat pump system to switch to operate in the operation mode with the lower priority information, if yes.