Exchanger element for passenger compartment and passenger compartment equipped with such an exchanger element

Resolve Bottlenecks,
Find Innovative Solutions
Generate Solutions

Solution Overview

Problem

Existing heat exchanger configurations are unsuitable for spatially limited installation volumes and fail to efficiently heat or climate control passenger compartments with minimal additional energy consumption, especially in vehicles without internal combustion engines.

Innovation Solution

An exchanger element with separated exhaust air and inlet air flow paths, using heat-transmitting and water vapor-transferring partition sections, and optionally including an electrical heating element, to transfer thermal energy and humidity efficiently between the passenger compartment and outdoor surroundings.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Volume of stationary object

If conventional heat exchanger configurations are used, then heat exchange function is provided, but the installation volume is too large for spatially limited passenger compartments

Engineering Contradiction:
Improveinstallation volumeVSAvoidheating efficiency
Core Design Contradiction:
Volume of stationary objectVSReliability

Solution Approach 1:

The heat exchanger is divided into multiple individual exchanger elements that can be arranged in series or parallel configurations. Each element contains separate exhaust air and inlet air flow paths with heat-transmitting partition sections, allowing modular assembly that adapts to limited spatial constraints while maintaining effective heat exchange surface area

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent transitions from conventional three-dimensional bulky heat exchanger designs to a two-dimensional planar configuration where exhaust air and inlet air flow paths are arranged in adjacent planes separated by heat-transmitting partitions. This dimensional transformation significantly reduces the volume required for installation while preserving heat exchange functionality

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

2Use of energy by moving object

If internal combustion engine waste heat is used, then heating energy is provided, but vehicles without internal combustion engines (electric/hybrid drives) cannot utilize this heat source

Engineering Contradiction:
Improveheating energyVSAvoidcompatibility with different drive types
Core Design Contradiction:
Use of energy by moving objectVSAdaptability or versatility

Solution Approach 1:

The exchanger element design is universally applicable to multiple drive types including internal combustion engines, electric drives, and hybrid drives. The system can function as a heat exchanger when waste heat is available and as a ventilation system with optional electric heating when no waste heat is present, making it versatile across different vehicle powertrain configurations

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The system automatically adapts to available energy sources by utilizing waste heat from the vehicle's exhaust when present (internal combustion or hybrid mode) and switching to electric heating elements when waste heat is unavailable (electric drive mode), enabling self-adjusting operation across different drive conditions

Inventive Principle:
Principle #25Self-service

3Temperature

If air conditioning systems are used for climate control, then cooling and drying functions are provided, but additional energy consumption increases

Engineering Contradiction:
Improveclimate controlVSAvoidenergy consumption
Core Design Contradiction:
TemperatureVSUse of energy by moving object

Solution Approach 1:

The system converts the harmful exhaust air that would otherwise be discharged into a useful heating resource by directing it through heat-transmitting partitions to warm incoming fresh air. This transforms waste heat into a beneficial climate control resource, reducing the need for additional energy-consuming heating systems

Inventive Principle:
Principle #22Blessing in disguise (Convert harm into benefit)

Solution Approach 2:

Heat-transmitting partition sections act as intermediaries between the exhaust air flow path and the inlet air flow path, enabling thermal energy transfer without direct mixing of the two air streams. This intermediary mechanism efficiently transfers heat from exhaust air to incoming air while maintaining separate flow paths

Inventive Principle:
Principle #24Intermediary (Mediator)

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

Maintains a comfortable temperature and humidity level in passenger compartments with minimal energy consumption, suitable for both winter and summer operations, and compatible with electric or hybrid drives.

Implementation Method 1

the exhaust air flow path and the inlet air flow path are separated from one another by sections of partition having heat-transmitting wall areas

Methodology Applied
Scientific EffectHeat conduction: Conduction (thermal)

Implementation Method 2

sections of partition having heat-transmitting and water vapor-transferring wall areas

Methodology Applied
Scientific EffectPermeation: Permeation

Data Source

PatentUS11015873B2Exchanger element for passenger compartment and passenger compartment equipped with such an exchanger element
Publication Date: 2021.05.25 ZEHNDER GROUP INTERNATIONAL AG
  • US11015873B2 patent drawing
  • US11015873B2 patent drawing

AI summary

The invention relates to an exchanger arrangement (3) for the heat transfer and/or selective material transfer between a first fluid (F1) and a second fluid (F2), which can flow through the arrangement (3), said arrangement (2) being constituted of a multitude (n) of adjacent local exchanger elements (E1, E2, . . . , En). The exchanger arrangement (3) has at least in some sections a cylindrical shape or the shape of a segment thereof or a prismatic shape having a polygonal base or the shape of a segment thereof. The adjacent local exchanger elements (E1, E2, . . . , En) are flat structures that are either wedge-shaped or sheet-like.