Wall-Mounted Pre-Rinse Spray With Hose Restraint and Low-Flow Jets
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Solution Overview
Problem
Traditional pre-rinse spray devices in commercial kitchens are prone to damage, difficult to clean, require extensive installation time, and compromise rinsing performance due to high water usage and design limitations, including breakage of flexible hoses and cross-contamination risks.
Innovation Solution
A wall-mounted rinsing device with a flexible, stretchable hose and a restraining device to prevent the spray head from being submerged in dirty water, featuring a large bore hose for high pressure and efficient rinsing, and a simplified design with fewer components for reduced costs and easier installation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional pre-rinse sprays are mounted on the sink deck or splash back, then they are easily accessible for use, but they are prone to damage from being knocked with pots and pans and are difficult to clean around
Solution Approach 1:
The spray device is extracted from the sink deck mounting location and repositioned to a wall-mounted location above the sink. This separates the spray function from the sink structure, eliminating the risk of damage from kitchen utensils while maintaining accessibility for operation.
2Stability of the object's composition
If traditional pre-rinse sprays use a rigid hose arrangement, then the spray gun is stable during use, but the hose is prone to breakage from twisting actions by the operator
Solution Approach 1:
A flexible hose is used to connect the wall-mounted unit to the spray gun, replacing rigid hose arrangements. The flexibility allows the hose to accommodate twisting and movement without kinking or breaking, while the hose is sufficiently robust to maintain stability during spray operation.
3Reliability
If traditional pre-rinse sprays require a wall bracket fixed between the riser tube and kitchen wall, then the device is protected from damage, but it cannot be used with mobile sinks for easy cleaning
Solution Approach 1:
The mounting system is extracted from the sink structure entirely and relocated to the wall. The wall-mounted unit with flexible hose connection provides damage protection through its secure wall fixation and flexible positioning, while simultaneously enabling compatibility with both fixed and mobile sink configurations.
Solution Approach 2:
The wall-mounted design with flexible hose creates a universal mounting solution that works with both fixed and mobile sink types. The flexibility of the hose arrangement allows the spray device to accommodate different sink positions and configurations without requiring sink-specific mounting hardware.
4Adaptability or versatility
If traditional pre-rinse sprays use many component parts, then the device can be designed with specific functions, but it is time-consuming to install and has increased risk of leaking joints
Solution Approach 1:
Multiple functional components are merged into an integrated wall-mounted unit assembly. The unit combines the mixer, flow control valves, and spray mechanism into a single pre-assembled package that mounts to the wall as one unit, significantly reducing installation time and the number of potential leak points while maintaining all necessary functions.
5Ease of operation
If traditional pre-rinse sprays allow the spray gun to be pulled down into the sink bowl, then the operator can reach difficult areas, but it creates cross-contamination risk between dirty and clean water
Solution Approach 1:
A restraining device acts as an intermediary between the spray gun and the sink bowl, allowing controlled movement for reaching difficult areas while preventing the spray gun from being pulled below the water line. This mediator maintains the boundary between clean and dirty zones while preserving operational flexibility.
6Quantity of substance
If traditional pre-rinse sprays fit a low water delivery spray gun to meet energy-saving legislation, then water usage is limited to maximum delivery rate, but the spray performance is weak and rinsing is compromised
Solution Approach 1:
The spray system parameters are optimized by using a large bore hose to minimize pressure loss and a well-designed spray gun to maximize water delivery efficiency. This allows the system to achieve effective rinsing performance at lower water flow rates by improving the efficiency of water delivery and spray distribution, rather than simply reducing flow volume.
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 the risk of damage, enhances cleaning efficiency with high-pressure jets at low water flow rates, minimizes installation time, and prevents cross-contamination while being cost-effective and easy to maintain.
Implementation Method 1
The flexible hose preferably includes one or more resilient coils, which allow the hose to stretch and absorb any twisting action applied to the spray gun during use, so avoiding kinks and prolonging the service life of the device
Implementation Method 2
The flexible hose preferably has a bore of at least 12mm diameter. By using a hose with a large bore, it is possible to maintain a high pressure at the spray head, to provide high velocity spray jets. This ensures effective rinsing even at low water flow rates
Data Source
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AI summary
A rinsing device includes a wall unit (22) having a water inlet (32) and a water outlet, the water outlet including a flexible hose (30) connected at one end to the wall unit (22) and a spray head (36) attached to a free end of the hose. A restraining device (42) is connected between the wall unit (22) and the free end of the flexible hose (30). The wall unit (22) is constructed and arranged to be mounted in use on a wall and the flexible hose (30) is constructed and arranged so that in use its free end hangs down from the wall unit.