Embedded ventilation fan
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Solution Overview
Problem
Embedded ventilation fans face the issue of water entering the room due to dew condensation through openings in the decorative panel, which is not effectively addressed by existing designs.
Innovation Solution
The design incorporates a decorative panel with a non-open zone on its rear surface, featuring a protruding wall that separates the air exhaust slit openings from a zone with no openings, positioning the heat exchange element above this zone to prevent water from dripping into the room, and utilizing heat insulating plates to manage airflow and temperature.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the decorative panel includes opening (air supply slit opening or air exhaust slit opening), then air supply and exhaust functions are achieved, but water due to dew condensation may drop into the room via the opening
Solution Approach 1:
The decorative panel is segmented into multiple functional zones: air supply slit openings, air exhaust slit openings, and a non-open zone. This segmentation allows different regions to serve different purposes - some for air flow and others for water collection, resolving the contradiction between maintaining air supply/exhaust functions and preventing water entry.
Solution Approach 2:
The non-open zone acts as an intermediary region between the heat exchange element and the room space. It receives and collects water from dew condensation, preventing direct entry into the room while allowing the air supply and exhaust openings to remain functional. The protruding wall structure further mediates by directing water flow into the non-open zone.
2Temperature
If the heat exchange element is disposed at a position where air supply passage and air exhaust passage cross each other, then heat exchange efficiency is improved, but water from dew condensation may directly reach the openings
Solution Approach 1:
The decorative panel exhibits local quality differentiation with distinct zones having different properties. The non-open zone specifically positioned below the heat exchange element has the quality of water collection, while other zones maintain air flow properties. This localized functional differentiation resolves the contradiction by protecting specific areas from water while maintaining overall heat exchange efficiency.
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 effectively suppresses the entry of water into the room by directing condensation water into a non-open zone, preventing it from reaching the air exhaust or supply openings, thus maintaining a dry environment.
Implementation Method 1
a heat exchange element disposed at a position where the air supply passage and the air exhaust passage cross each other
Implementation Method 2
air supply blower, air exhaust blower, air supply passage through which air is blown, air exhaust passage through which air is blown
Implementation Method 3
water due to dew condensation or the like may drop into the room via the opening of the decorative panel
Data Source
AI summary
An embedded ventilation fan includes a housing, a decorative panel, an air supply blower, an air exhaust blower, and a heat exchange element. The heat exchange element is disposed at a position where an air supply passage and an air exhaust passage cross each other in the housing. The decorative panel includes a front surface, a rear surface, an air supply slit opening, an air exhaust slit opening, and a non-open zone. The rear surface includes a protruding wall protruding toward an inner side of the housing. The non-open zone is a zone having no opening. The air exhaust slit opening is partitioned from the non-open zone by the protruding wall on the rear surface. The heat exchange element is disposed directly above the non-open zone and is not disposed directly above the air supply slit opening and the air exhaust slit opening.