Heat recovery ventilator
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Solution Overview
Problem
Existing ventilation devices face challenges in avoiding air duct crossings, which reduce usable room height and efficiency, and require multiple device versions to accommodate different connection variants.
Innovation Solution
The ventilation device arranges air connections on the side wall such that an exhaust air connection is positioned between supply air connections, allowing for a flat design that avoids duct crossings and combines both 'left' and 'right' device versions in a single unit, with optional closure of unnecessary air connections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If air ducts are routed to supply air areas on both sides of an exhaust air duct, then ventilation coverage is improved, but duct crossings occur which reduce usable room height and efficiency
Solution Approach 1:
The patent transitions from a linear arrangement of air connections to a two-dimensional distribution pattern on the housing surface. By placing exhaust air connections between supply air connections in a spatial arrangement, the system enables duct routing in multiple directions without vertical crossings, thus preserving room height while maintaining comprehensive ventilation coverage.
Solution Approach 2:
The patent creates a universal housing design with a standardized pattern of air connections that can accommodate various duct routing configurations. The exhaust air connection positioned between two supply air connections serves multiple functions: it allows ducts to be routed to left and right supply areas independently, eliminates the need for multiple housing versions, and provides flexibility in installation scenarios without compromising ventilation efficiency.
2Adaptability or versatility
If multiple versions of ventilation devices are produced to accommodate different connection variants, then adaptability to different installation scenarios is improved, but device complexity and manufacturing costs increase
Solution Approach 1:
The patent implements a universal housing design where the air connections are arranged in a standardized pattern that serves multiple installation configurations. The exhaust air connection is positioned between two supply air connections, allowing the same housing version to accommodate various duct routing scenarios (left-side supply, right-side supply, or both) without requiring multiple specialized versions, thereby reducing manufacturing complexity while maintaining installation flexibility.
Solution Approach 2:
The patent introduces adjustable or selectively closable air connection elements that can be configured during installation to match different installation scenarios. This dynamic configuration capability allows a single housing design to adapt to various installation requirements, eliminating the need for multiple static housing versions and reducing overall system complexity.
3Ease of operation
If air connections are arranged on the front or rear wall, then connection access is improved, but housing dimensions increase and flat design is compromised
Solution Approach 1:
The patent relocates air connections from the front/rear walls to the side walls of the housing, utilizing the lateral surface area for connection access. This dimensional shift allows the housing to maintain a flat front and rear profile suitable for ceiling installation while providing adequate access to air connections on the side walls, thus preserving both housing flatness and connection accessibility.
Solution Approach 2:
The patent concentrates all air connections (exhaust and supply) on the side walls, creating a localized connection zone that maintains the flat overall housing shape. By positioning connections locally on the sides rather than distributing them across front and rear surfaces, the housing retains its streamlined, flat design while ensuring all necessary connections are easily accessible during installation and maintenance.
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 enables efficient air supply without duct crossings, reduces the number of device versions, and allows for flexible installation without compromising efficiency or increasing housing dimensions.
Implementation Method 1
a heat exchanger (15) is arranged in the interior (34) of the housing (14)
Implementation Method 2
at least one blower (58, 60) is arranged in the housing (14)
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The invention relates to a ventilation unit (13) with heat recovery, comprising a housing (14) in which a heat exchanger (15) is arranged, through which air is conveyed by means of at least one fan (58, 60), wherein the housing (14) has a front wall (31), a rear wall (32) and a side wall (33) as well as air connections (90) for different types of air, namely supply, exhaust, return and/or outside air. It is provided that at least some of the air connections (90) on the side wall (33) are arranged such that an air connection (90) of one type of air is located between at least two air connections (90) of another, but mutually the same, type of air.