Extraction device and method for operating the same
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Solution Overview
Problem
Existing downdraft extraction devices for cooking hobs face challenges in controlling air humidity and installation complexity, leading to uncontrolled humidity increase in kitchen spaces and elaborate air tube installations.
Innovation Solution
An extraction device with an inlet opening, conduction means, fan, outlet opening, cooling down means, and separation means, including a condenser or condensation surface, which reduces air humidity and allows safe release of air within the kitchen cabinet, along with a heat exchanger and carbon filter for efficient air handling and odor control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the exhausted air with air humidity is released into the kitchen cabinet, then the installation complexity is reduced, but the kitchen cabinet suffers damages due to air humidity
Solution Approach 1:
The patent applies preliminary action by cooling the exhausted air before it is released into the kitchen cabinet. The cooling device reduces the temperature and condenses water vapor in the exhaust air, preventing humidity-related damage to the cabinet while allowing direct release without complex ductwork. This pre-cooling step eliminates the need for elaborate air tube installations while protecting the cabinet from moisture damage.
2Object-affected harmful factors
If the air tube is led through the kitchen cabinet towards the plinth panel, then the air humidity can be released outside, but the installation becomes elaborate and requires space from the interior of the kitchen cabinet
Solution Approach 1:
The patent extracts the harmful element (excess water vapor) from the exhaust air through condensation in the cooling device. By removing the majority of moisture before release, the system allows the exhaust air to be discharged directly into the kitchen cabinet without requiring complex air tube installations to route air outside. The harmful humidity is taken out, enabling a simpler discharge path.
3Ease of operation
If the air humidity of the exhausted air is blown into the installation room, then the exhaust can be released easily, but the humidity of the room air increases in an uncontrolled way
Solution Approach 1:
The cooling device performs preliminary cooling and condensation of the exhaust air, removing excess water vapor before the air is released into the kitchen cabinet. This pre-treatment prevents uncontrolled humidity increase in the room while maintaining easy exhaust release. The majority of moisture is condensed and collected, allowing controlled humidity levels in the installation room.
4Quantity of substance
If the cooling down means and separation means are arranged upstream of the fan, then the air humidity is reduced before fan operation, but the installation complexity increases
Solution Approach 1:
The cooling device serves multiple functions: it cools the exhaust air, condenses water vapor, and acts as a separation means for removing fluid particles. By combining these functions in a single unit upstream of the fan, the patent reduces air humidity effectively while avoiding the need for separate cooling and separation devices, thereby limiting the increase in installation complexity.
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
The device effectively reduces humidity and odor levels in the kitchen cabinet, eliminating the need for extensive air tubing and preventing uncontrolled humidity increases, while ensuring safe and efficient air handling and odor filtration.
Implementation Method 1
a cooling down means for cooling down the heated air
Implementation Method 2
a separation means for a separation of fluid particles from the heated air are arranged upstream of the fan. Said separation of the fluid particles is particularly an effect of the cooling down process
Implementation Method 3
a heating up means, in particular arranged downstream from the cooling down means, configured to heat up, in particular to reheat, the cooled air
Data Source
AI summary
An extraction device (10) for removing heated air from an area above a cooking hob comprises an inlet opening (12) for an air intake into an interior of the extraction device (10), a conduction means for conducting the heated air through the interior of the extraction device (10), a fan (22) for sucking-in the heated air from the area above the cooking hob, the fan (22) being arranged in or being inoperative connection with the conduction means, and an outlet opening (14) for exhausting air. According to the present invention, a cooling down means (40) for cooling down the heated air and a separation means (40) for a separation of fluid particles from the heated air are arranged upstream of the fan (22), wherein the separation of the fluid particles is particularly an effect of the cooling down process. Further, a method for operating an extraction device (10) is disclosed. Air loaded with fluid particles is transported from an inlet opening (12) to an outlet opening (14) of the extraction device (10). According to the invention, the fluid particles are separated from the air by benefitting from a condensation effect.