Filter Cleaning Device With Movable Lid for Suction-Based Dust Removal
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Solution Overview
Problem
Existing filter cleaning devices for air-conditioners require high suction forces to empty dust boxes, which can damage filters, are complex and expensive, or require large spaces that are not always available, and often fail to sufficiently remove particulate matter without disturbing occupied areas.
Innovation Solution
A filter cleaning device with a movable dust box and a brush or special fabric cleaning member that uses a suction force to collect particulate matter, where the dust box is designed to be emptied using a vacuum cleaner, reducing the need for high suction forces and minimizing space requirements, and featuring a mechanism to automatically seal the suction opening for efficient pressure buildup.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a suction device with suction nozzle is used to clean the filter, then particulate matter can be removed from the filter surface, but the device becomes relatively complicated and expensive
Solution Approach 1:
The patent extracts the suction function from a complex suction device with moving nozzles and integrates it into a simple dust box with a fixed suction opening. The cleaning member (brush) is separated from the suction function, with the brush manually moved along the filter while the dust box remains stationary. This extraction of functions simplifies the overall device structure while maintaining cleaning effectiveness.
Solution Approach 2:
The device is segmented into independent functional components: a stationary dust box for collecting particulate matter, a separate cleaning member (brush) for removing dust from the filter, and a suction opening for applying negative pressure. This segmentation allows each component to be optimized independently and simplifies the overall device complexity.
2Reliability
If high suction force is applied to remove particulate matter from the filter, then cleaning effectiveness is improved, but the filter may be damaged
Solution Approach 1:
The patent applies partial action by using a brush to pre-loosen and remove particulate matter from the filter surface before suction is applied. This mechanical pre-cleaning reduces the suction force needed to remove remaining particles, preventing filter damage while maintaining cleaning effectiveness. The brush performs the heavy lifting, and suction only needs to collect the loosened particles.
3Quantity of substance
If a large dust box is used to collect particulate matter, then collection capacity is improved, but the system requires more space and is difficult to empty
Solution Approach 1:
The patent uses negative pressure (suction force) applied at the suction opening to counteract the weight and volume of particulate matter in the dust box. By applying this counteracting force through the opening, the system can effectively empty the dust box without requiring large physical space or manual intervention, resolving the contradiction between collection capacity and emptying difficulty.
4Ease of operation
If the dust box is open to atmosphere at a large area, then access is improved, but it is difficult to build up sufficient under pressure for effective suction
Solution Approach 1:
The patent uses a lid (flexible barrier) to close the dust box opening during suction operation. This flexible shell allows the box to be sealed sufficiently to build up negative pressure while still being simple in structure and easy to open when needed for access. The lid provides the necessary sealing without requiring complex mechanisms.
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 allows for effective particulate matter removal with reduced suction force requirements, minimizing filter damage and space needs, while maintaining efficient air filtration during operation, and enabling easy maintenance without disturbing occupied spaces.
Implementation Method 1
a suction section for applying a suction force to the dust box to remove received particulate matter from the dust box
Data Source
Figure 1
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AI summary
The present disclosure relates to a filter cleaning device (10) for an air conditioner (1), particularly a duct-type air conditioner, the filter cleaning device comprising a casing (11), a filter (12) disposed in the casing and to be passed through by an air flow, the filter having a filter surface (13), a cleaning member (16) contactable with the filter surface (13) for removing particulate matter from the filter surface and a dust box (28) for receiving the particulate matter, the dust box comprising a housing (30) accommodating the cleaning member and having an opening (31) through which the cleaning member protrudes from the housing for contacting the filter surface Further, the filter cleaning device comprises a suction section (32) configured to apply a suction force to the dust box for removing received particulate matter from the dust box, wherein the suction section comprises an outlet (37) in the housing to be communicated with the suction force and a lid (39) movable between a first position and a second position, the lid closing the opening (31) of the housing in the second position, wherein the lid is in the second position when the suction force is applied. The present disclosure also relates to an air conditioner having such a filter cleaning device.