Compact ventilation appliance with individually controllable air conveyor units
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Solution Overview
Problem
Central ventilation systems face challenges with space constraints, aesthetic issues due to duct crossings, and inefficient individual room air flow control, often resulting in unbalanced supply and extract air flows and high energy consumption.
Innovation Solution
A compact ventilation device with individually controllable air conveying units, integrated supply and exhaust air distributors, and a heat exchanger, allowing for modular and adaptable design with coordinated air flow management to balance supply and extract air flows, reducing energy consumption and pressure losses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If valves are fitted for individual flow control in central ventilation systems, then individual room air volume flow control is achieved, but total supply air flow and extract air flow become unbalanced and additional pressure losses occur
Solution Approach 1:
The ventilation system is divided into multiple independent air conveying units, each serving a specific room. Each unit has its own air conveying element (fan) and control mechanism, allowing individual room ventilation to be adjusted without affecting other rooms. This segmentation eliminates the need for valves that cause pressure losses, as each unit independently controls its own air flow.
Solution Approach 2:
The air conveying elements are designed with variable speed capabilities, allowing the air volume flow in each room to be dynamically adjusted according to actual needs. The speed of each air conveying element can be independently controlled to maintain balanced supply and extract air flows while minimizing pressure losses.
2Ease of operation
If decentralized fans are distributed in different rooms for efficient volume flow regulation, then individual room control is improved, but installation and maintenance become more complicated
Solution Approach 1:
Multiple air conveying units are combined into a single integrated housing structure. The housing contains mounting spaces for multiple air conveying elements and their controls, consolidating what would otherwise be distributed components throughout the building. This merging approach maintains individual room control capability while significantly simplifying installation and maintenance, as all critical components are accessible from one location.
3Reliability
If a central fan ensures constant pressure through speed control to avoid influence on other flows, then flow independence is achieved, but the fan runs with approximately constant power consumption even when air demand is lower
Solution Approach 1:
The central fan is replaced by multiple independent air conveying elements, each serving a specific room or function. Each element can independently adjust its speed and power consumption according to the actual air demand of its designated area. This segmentation allows the system to maintain constant pressure and flow independence while significantly reducing overall energy consumption, as only the necessary air conveying elements operate at full capacity.
Solution Approach 2:
The system enables independent parameter adjustment for each air conveying element, including speed, air volume flow, and power consumption. Each element can operate at optimized parameters based on real-time air quality sensors and user preferences, rather than running at constant high power consumption. This allows the system to maintain reliability through constant pressure control while adapting power consumption to actual demand.
4Loss of energy
If heat recovery and demand-controlled volume flows are used simultaneously, then energy efficiency is improved, but the system complexity increases
Solution Approach 1:
The heat recovery function and demand-controlled volume flow control are merged into a single integrated system. The air conveying units are equipped with both heat exchange capabilities and independent speed control mechanisms, allowing simultaneous operation of both functions without requiring separate complex control systems. The housing structure provides integrated mounting spaces for heat exchangers and control electronics, simplifying the overall system architecture.
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
Enables efficient, energy-saving, and aesthetically pleasing ventilation with balanced air flows in individual rooms, reducing installation complexity and maintenance needs while maintaining optimal air quality and temperature control.
Implementation Method 1
a heat exchanger, in particular a rotary heat exchanger or a plate heat exchanger or an enthalpy heat exchanger, is arranged in the ventilation device, which enables heat to be transferred from the exhaust air to the incoming air and/or vice versa
Data Source
Figure 1~2
Figure 3~4
Figure 5
AI summary
The invention relates to a ventilation device (1) for ventilating a building (21, 22, 23, 24, 25, 26), having a supply air distributor (2) which can be supplied with supply air through at least one supply duct (11) and an exhaust air distributor (3 ) from which exhaust air can be discharged through at least one disposal channel (15). The supply air distributor (2) has a plurality of individually controllable air conveying units (10) which convey the supply air through different supply air ducts (4) assigned to the respective air conveying unit (10) to a space (24, 25, 26) can promote. In addition, the exhaust air distributor (3) has a plurality of individually controllable air conveying units (10), which convey the exhaust air through different exhaust air ducts (5) assigned to the respective air conveying unit (10) from a space (22, 23) assigned to the respective exhaust air duct (5). can promote. A heat exchanger (13), in particular a rotary heat exchanger or a plate heat exchanger or an enthalpy heat exchanger, is arranged in the ventilation device (1), which enables heat and/or moisture to be transferred from the exhaust air to the incoming air and/or vice versa.