Dishwasher Ozone Storage for Low-Energy Odor Control
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Solution Overview
Problem
Conventional dishwashing machines often experience unpleasant odors due to prolonged non-operating times with dirty items, leading to hygiene issues.
Innovation Solution
Incorporating an ozone generator and a storage device for ozone and hydroxyl radicals, which are introduced into the washing solution during cycles and stored for discharge during drying or non-operating phases, utilizing a fan to deodorize the compartment periodically or upon door opening.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the dishwashing machine operates continuously to maintain hygiene, then hygiene is improved, but energy consumption increases
Solution Approach 1:
Ozone is generated and stored in the storage device during the washing program before the non-operating phase begins. This preliminary generation and storage of ozone allows the compartment to be disinfected in advance, maintaining hygiene during idle periods without requiring continuous energy input.
Solution Approach 2:
The system uses the washing program itself to generate ozone that will be used during the non-operating phase. The ozone generator operates during washing when energy is already being consumed, and the stored ozone then automatically maintains hygiene during idle periods without additional energy input.
2Reliability
If ozone is generated continuously to prevent odors, then hygiene is improved, but energy consumption and ozone production costs increase
Solution Approach 1:
Ozone is generated and accumulated in the storage device during the washing program before the non-operating phase. This preliminary action allows the system to prepare the disinfectant in advance when energy is already being consumed, then use the stored ozone during idle periods without additional generation costs.
Solution Approach 2:
Instead of continuous ozone generation, the system uses periodic action by generating ozone during washing programs and then utilizing the stored ozone during non-operating phases. This intermittent generation pattern reduces overall energy consumption while maintaining hygiene effectiveness.
3Reliability
If a storage device for ozone is added, then hygiene during non-operating phases is improved, but device complexity increases
Solution Approach 1:
The storage device serves multiple functions: it stores ozone for discharge during non-operating phases, and can also function as part of the drying system by utilizing the same compartment space. This multi-functionality reduces the need for separate dedicated components for each function.
Solution Approach 2:
The ozone storage function is merged with the existing drying system compartment rather than adding a completely separate storage system. The storage device is integrated into the dishwashing machine structure, combining space utilization and reducing overall system 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
Prevents odor formation and maintains hygiene in the dishwashing machine even during prolonged non-operating phases with low energy consumption by using stored ozone and hydroxyl radicals for deodorization.
Implementation Method 1
The ozone dissolved in the washing solution serves initially and advantageously to increase the cleaning action of the partial programme step concerned
Implementation Method 2
a storage device connected in an air-conducting manner to the washing compartment for ozone and/or hydroxyl radicals, which device preferably serves on the one hand to receive ozone and/or hydroxyl radicals during its production or formation, and on the other hand to discharge ozone and/or hydroxyl radicals during a 'Drying' partial programme step and/or during a non-operating phase
Implementation Method 3
a fan is provided which can be activated by a control system in order to introduce the ozone and/or the hydroxyl radicals into the storage device and remove the ozone and/or the hydroxyl radicals from the storage device
Implementation Method 4
The advantage of such a storage device for receiving ozone and/or hydroxyl radicals is that ozone and/or hydroxyl radicals can be fed into the washing compartment of the dishwashing machine at certain specified times in order to prevent the formation of an unpleasant odour, thereby improving the hygiene of the interior of the washing compartment
Data Source
AI summary
A dishwashing machine is provided with a washing compartment, an ozone generator, and devices for washing items to be washed using a washing solution, as well as with a storage device that is connected to the washing compartment in an air-conducting manner. The storage device serves, on the one hand, to store ozone and/or hydroxyl radicals as they form or are produced and, on the other hand, to release ozone and/or hydroxyl radicals during a partial program step drying and/or a non-operating phase of the dishwashing machine whereby effecting a deodorizing.