Water Cooler Filter Cartridge Layout for Hygienic On-Demand Cooling
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Point-of-use water coolers face challenges in maintaining high hygiene levels, ease of maintenance, low energy consumption, and immediate on-demand water dispensing while preventing bacterial growth and residual sterilizing chemical removal.
Innovation Solution
A thermally insulated chamber system with a cooling medium, incorporating a cooling element, water inlet, outlet, and a filter cartridge with a manifold for treated water filtration, where the drinking water acts as the cooling medium or is conducted through a conduit, ensuring sanitized conditions and immediate cooled water dispensing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If water is filtered at the point of entry into the water cooler, then debris is prevented from entering the cooling chamber, but the thermal mass of water between the cooling chamber and the dispensing point increases, delaying cooled water dispensing
Solution Approach 1:
The system divides the water flow path into two separate streams: one for cooling (through the cooling chamber) and one for filtration (through the filter cartridge). This segmentation allows both cooling and filtration to occur simultaneously without one delaying the other, resolving the contradiction between debris prevention and cooling time.
Solution Approach 2:
The manifold acts as an intermediary component that receives cooled water from the cooling chamber and directs it through the filter cartridge. This intermediary structure enables the filtered water to be obtained without extending the cooling path, thus preventing delay in cooled water dispensing while still ensuring debris removal.
2Reliability
If sterilizing chemicals are added at source to the piped water supply, then bacterial growth is prevented, but residual sterilizing chemicals remain in the water requiring additional filtration
Solution Approach 1:
The filter cartridge serves as an intermediary filtration stage that removes residual sterilizing chemicals from the water after it has been cooled. This two-stage approach (chemical sterilization followed by physical filtration) maintains bacterial growth prevention while eliminating harmful chemical residues.
Solution Approach 2:
The system applies different treatment methods at different locations: chemical sterilization is applied at the water source for broad bacterial prevention, while localized physical filtration is applied at the point of use to remove specific residual chemicals, creating a comprehensive solution that addresses both concerns.
3Productivity
If a large thermal mass of water is stored in the cooling chamber, then cooled water is always available, but energy consumption increases and the system takes longer to cool down
Solution Approach 1:
The system dynamically adjusts the water flow through the cooling chamber based on demand. Rather than continuously cooling a large volume of water, the system cools water on-demand as it flows through the chamber, significantly reducing energy consumption while still providing cooled water availability when needed.
Solution Approach 2:
The system performs preliminary cooling of water in small quantities as it passes through the cooling chamber, rather than pre-cooling large volumes in advance. This approach maintains the ability to provide cooled water on-demand while minimizing the total energy required for cooling operations.
4Reliability
If the filter cartridge is periodically replaced, then filtration components remain sanitized, but maintenance complexity and user intervention are required
Solution Approach 1:
The filter cartridge is designed as a disposable component that is periodically replaced by the user. This approach ensures continuous sanitization and filtration effectiveness while keeping the maintenance system simple - users only need to replace the entire cartridge unit rather than perform complex cleaning or sanitization procedures.
Solution Approach 2:
The filter cartridge integrates multiple functions (filtration, sanitization, and flow control) into a single replaceable unit. This merging of functions simplifies maintenance, as users replace one component rather than servicing multiple separate systems, thereby improving ease of repair while maintaining high reliability.
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 provides a hygienic, low-maintenance, energy-efficient point-of-use water cooler that maintains sanitized conditions and allows for immediate on-demand dispensing of cooled water, reducing the need for periodic sanitization and ensuring bacterial growth prevention.
Implementation Method 1
a thermally insulated chamber system containing a cooling medium which provides a thermal mass, the chamber system further incorporating: a cooling element for cooling the cooling medium
Implementation Method 2
a thermally insulated chamber system containing a cooling medium which provides a thermal mass
Implementation Method 3
a water filter located in the filter housing
Data Source
Figure 1
Figure 2~3
Figure 4
AI summary
The water cooler has a water inlet (4) for receiving treated water from a piped drinking water supply which feeds a thermally insulated chamber (2) containing a cooling element (12) to provide a volume of cooling medium. Residual sanitizing chemicals in the water supply prevent bacterial growth within the chamber (2). Water leaves the chamber (2) via an outlet coupling (10) and enters a filter cartridge (7) which is engaged on a seat (6) incorporating a well (11). The cartridge contains a water filter (20) within a filter housing (17) which is received in the well (11) surrounded by the cooling medium. A manifold (16) in thermal contact with the seat (6), incorporates a connector (19) which sealably engages the coupling (10), flow passages, and a dispense outlet (18). The filter cartridge is cooled to ensure that cooled water can be dispensed on demand, and periodic replacement of the filter cartridge ensures that the filtration components remain sanitized.