Electrostatic Filter Heat Exchanger for Low-Maintenance Ventilation
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Solution Overview
Problem
Existing house ventilation systems face high maintenance costs due to the complexity of cleaning ceramic heat storage elements in electrostatic precipitators, which are prone to contamination from fine particles settling in their pores.
Innovation Solution
A decentralized house ventilation device with an electrostatic filter unit featuring separation elements that function as both filters and heat exchangers, made of materials with high specific heat capacity, allowing for easy cleaning and reduced maintenance, and a modular design where the filter unit can be separated and cleaned in a dishwasher.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If ceramic heat storage elements are used in electrostatic precipitators, then heat transfer efficiency is improved, but maintenance complexity and cost increase due to particle settlement in pores
Solution Approach 1:
The patent applies porous ceramic materials as heat storage elements in the electrostatic precipitator. The porous structure provides high surface area for heat transfer while the patent addresses the maintenance issue by designing a removable filter unit that can be cleaned separately, preventing particle accumulation from affecting the heat storage function
Solution Approach 2:
The patent divides the ventilation device into separate modular units, specifically making the filter unit removable and separable from the main housing. This segmentation allows the filter to be cleaned independently in a dishwasher without disassembling the entire device, reducing maintenance complexity while preserving the heat storage function of the ceramic elements
2Reliability
If electrostatic filters with ceramic heat storage elements are used, then particle filtration is improved, but cleaning difficulty increases
Solution Approach 1:
The filter unit is designed as a separate, removable module that can be easily detached from the main device housing. This segmentation enables the filter to be cleaned independently in a dishwasher without requiring disassembly of the entire ventilation system, significantly improving cleaning ease while maintaining filtration efficiency
Solution Approach 2:
The patent implements a self-cleaning capability where the filter unit can be cleaned in a dishwasher without manual intervention. The removable design allows the filter to be placed in a dishwasher for automatic cleaning, reducing the need for manual maintenance while preserving the electrostatic filtration function
3Quantity of substance
If additional heat storage elements are added to electrostatic precipitators, then heat capacity is improved, but device complexity and maintenance difficulty increase
Solution Approach 1:
The patent combines the heat storage function with the filter unit structure by integrating ceramic heat storage elements into the removable filter assembly. This merging allows the heat capacity to be increased without adding separate, fixed components to the main housing, as the heat storage elements are incorporated into the modular filter unit that can be easily removed and cleaned
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 solution reduces maintenance costs and complexity by using metal separation elements with high specific heat capacity, preventing particle settlement in ceramic heat exchangers and enabling self-cleaning, thus improving filter efficiency and heat transfer while maintaining low pressure loss.
Implementation Method 1
the separation elements of the separating unit are designed as a heat exchanger in the house ventilation device. This means that a heat flow of warmer air, which flows through the separation unit, is established at the separation elements to the separation elements and the heat given off from the air to the separation elements can be stored in the separation elements
Implementation Method 2
the plate-shaped electrodes are arranged in such an alternating manner with regard to their charge that an electric field is formed between them. This results in a separation of charged particles on the separation elements, which flow through the separation unit in an air stream
Data Source
Figure 1~2
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Figure 4
AI summary
The invention relates to a domestic ventilation device comprising a blower (2) and at least one filter unit (4) for contaminants, which is an electrostatic filter unit (4) with a separator unit (41) having at least two electrically conductive separator elements (410). The domestic ventilation device (1) is characterized in that the separator elements (410) of the separator unit (41) are designed as heat exchangers in the domestic ventilation device (1). Furthermore, the invention relates to a method for operating such a domestic ventilation device (1), wherein the filter unit (4) is operated depending on the operating state of the blower (2).