Heat pump with a lockable hydraulic circuit

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Solution Overview

Problem

Existing heat pump systems face challenges due to bulky flow components that require significant space, compromise process reliability, are difficult to replace, and pose installation risks.

Innovation Solution

Integration of the shut-off valve and flow sensor into a common base body within the heat pump's hydraulic circuit, reducing space requirements, enhancing reliability, and simplifying replacement.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If separate flow components (shut-off valve and flow sensor) are used with connectors, then the system can be assembled with standard components, but the space requirement increases and assembly becomes laborious

Engineering Contradiction:
Improvecomponent compatibilityVSAvoidspace requirement
Core Design Contradiction:
Adaptability or versatilityVSArea of stationary object

Solution Approach 1:

The patent combines the shut-off valve and flow sensor into a single integrated flow component assembly. The flow sensor is positioned directly on the valve body, eliminating the need for separate connectors and mounting brackets. This merging reduces the overall space occupation while maintaining the functional independence and compatibility of both components.

Inventive Principle:
Principle #5Merging (Combining)

2Ease of manufacture

If multiple separate components and connectors are used, then the system can be assembled with standard parts, but process reliability is compromised due to more connection points

Engineering Contradiction:
Improveassembly flexibilityVSAvoidprocess reliability
Core Design Contradiction:
Ease of manufactureVSReliability

Solution Approach 1:

The integration of flow sensor and shut-off valve into a single assembly reduces the number of connectors and sealing points. Fewer connection interfaces mean fewer potential failure points for leaks or connection failures, thereby improving process reliability while maintaining ease of manufacture through modular design.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The patent extracts the flow sensor from its traditional separate mounting position and integrates it directly onto the valve body. This extraction of the sensor from separate mounting requirements eliminates additional connection points and seals, reducing leakage risks and improving reliability.

Inventive Principle:
Principle #2Taking out (Extraction)

3Strength

If bulky flow components are used, then the components are structurally robust, but they require significant space and are difficult to replace

Engineering Contradiction:
Improvestructural robustnessVSAvoidreplacement difficulty
Core Design Contradiction:
StrengthVSEase of repair

Solution Approach 1:

By combining the flow sensor and shut-off valve into a single compact assembly, the patent creates a structurally robust unit that occupies less space. The integrated design maintains strength through unified construction while improving replaceability as a single modular unit, reducing the complexity of replacement procedures.

Inventive Principle:
Principle #5Merging (Combining)

4Ease of manufacture

If multiple separate components are used, then the system can be assembled with standard connectors, but installation safety is reduced due to more potential leak points

Engineering Contradiction:
Improveassembly simplicityVSAvoidleak risk
Core Design Contradiction:
Ease of manufactureVSObject-affected harmful factors

Solution Approach 1:

The patent merges the flow sensor and shut-off valve into a single integrated component, thereby reducing the total number of connectors and sealing interfaces in the hydraulic circuit. This consolidation directly reduces the number of potential leak points, improving installation safety while maintaining assembly simplicity through the modular nature of the integrated unit.

Inventive Principle:
Principle #5Merging (Combining)

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 integration results in reduced space needs, improved process reliability, easier maintenance, and lower personnel costs, while also enhancing installation safety and reducing overall throughput time.

Implementation Method 1

The flow sensor or other devices are designed to detect the gas saturation of the heating water in the hydraulic circuit and provide a corresponding signal

Methodology Applied
Scientific EffectGas saturation detection:

Implementation Method 2

the hydraulic circuit is blocked by the shut-off valve based on the signal provided, preventing heating water from entering the building heated by the heat pump

Methodology Applied
Scientific EffectValve closure: Valve

Data Source

PatentEP4567345A1Heat pump with a lockable hydraulic circuit
Publication Date: 2025.06.11 STIEBEL ELTRON GMBH & CO KG
  • EP4567345A1 patent drawingFigure 1
  • EP4567345A1 patent drawingFigure 2~3
  • EP4567345A1 patent drawing

AI summary

The invention relates to a heat pump having a hydraulic circuit comprising a flow line, a condenser and a return line, wherein components of the flow line contain a shut-off valve and a flow sensor, wherein the shut-off valve and the flow sensor are integrated into a common base body (10) through which the fluid of the hydraulic circuit flows and which has connecting parts (19, 20) to further components of the flow line.