Sensor-Activated Plasma Odor Removal for Litter Boxes
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Solution Overview
Problem
Conventional litter box ventilation systems fail to effectively eliminate odors produced by animal excreta, as they merely transfer these odors outside the litter box, leaving lingering VOCs and other odor compounds in the household, and require frequent filter changes.
Innovation Solution
An animal litter box equipped with a sensor-activated odor removal device that includes a motorized fan, plasma generating unit, and activated carbon filter, which detects environmental changes to initiate and control the operation of these components, breaking down odor-producing chemicals and trapping byproducts to reduce household odor levels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-generated harmful factors
If conventional ventilation systems are used to remove odors from the litter box, then air is expelled outside the litter box, but the odor-producing chemicals are merely transferred to the household without being eliminated
Solution Approach 1:
The patent applies plasma technology to convert harmful odor-producing chemicals into beneficial byproducts. The plasma generator creates reactive species that break down VOCs and odor compounds into carbon dioxide, water, and trace minerals, transforming the harmful odor problem into a clean chemical transformation process
Solution Approach 2:
The plasma generating unit produces highly reactive oxygen species and ozone that act as strong oxidants to rapidly decompose odor-producing chemicals. This accelerated oxidation process breaks down complex organic compounds into simpler, non-odorous substances, eliminating rather than transferring the harmful factors
2Object-generated harmful factors
If air filters are added to ventilation systems to trap odor compounds, then temporary relief from odors is achieved, but the filter quickly becomes saturated and requires frequent changes
Solution Approach 1:
The patent replaces the mechanical filtration system with a plasma-based chemical decomposition system. Instead of physically trapping odor compounds in filter media that becomes saturated, the plasma generator chemically breaks down the compounds into non-odorous byproducts, eliminating the need for frequent filter replacements
Solution Approach 2:
The system changes the chemical parameters of odor compounds through plasma treatment, transforming them from odor-producing molecules into carbon dioxide, water, and trace minerals. This parameter change from complex organic compounds to simple inorganic substances eliminates the saturation problem inherent in physical filtration
3Object-generated harmful factors
If the odor removal device operates continuously to eliminate odors, then effective odor elimination is achieved, but energy consumption increases
Solution Approach 1:
The patent employs periodic operation of the plasma generator and fan system, activating them at scheduled intervals rather than continuously. This periodic action maintains effective odor elimination by treating odors when they accumulate to detectable levels, while significantly reducing overall energy consumption compared to continuous operation
Solution Approach 2:
The system incorporates sensors that detect odor levels and provide feedback to control the operation of the plasma generator and fan. When odor levels exceed a threshold, the system activates to eliminate the odors, then shuts off when levels return to acceptable ranges, optimizing energy usage based on actual odor conditions
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 system effectively eliminates odor-producing chemicals from the litter box, reducing unpleasant odors in the household and minimizing the need for frequent filter changes by using a sensor-activated, multi-component odor removal mechanism.
Implementation Method 1
a plasma generating unit, which breaks down odor producing chemicals
Implementation Method 2
an activated carbon filter, which traps byproducts of the plasma discharge
Data Source
AI summary
Animal litter boxes are provided which include a sensor to detect a change in an environment within an interior of its housing and an odor removal device (ORD) operationally connected to the sensor such that the ORD is activated in response to a signal from the sensor. In some cases, the ORD is configured to operate in different manners based on respectively different signals from the sensor. In addition or alternatively, the litter boxes may include a timer configured with the sensor for activating and periodically reactivating the ORD at preset time intervals in response to a sensor signal. In yet other embodiments, the litter boxes may additionally or alternatively include a timer having user adjustable settings of different time periods at which to initiate activation of the ORD and/or user adjustable settings of different durations at which to operate the ORD, both in response from a sensor signal.