Pressure Fryer Fire Suppression Nozzles for Vented Lid Coverage
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Solution Overview
Problem
Conventional fire suppression systems for pressure fryers are inadequate as they only provide protection when the lid is fully open, leaving the appliance at risk of fires during partially open or venting positions, where oil can bubble out or air enter, potentially igniting.
Innovation Solution
A fire suppression system with a reservoir and piping network featuring nozzles that direct fire suppression agents into the fry vat through various openings and configurations, including a closed and vented position, using different nozzle types and orientations to ensure comprehensive fire coverage regardless of the lid's position.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If nozzles are positioned to direct fire suppression agent to the center of the vat when the lid is fully open, then fire protection is provided for the fully open position, but fire protection is inadequate for partially open or venting positions where oil can bubble out or air enter
Solution Approach 1:
The fire suppression system is divided into multiple nozzle groups positioned at different locations and orientations. Each nozzle group targets specific areas of the fry vat, ensuring comprehensive coverage regardless of lid position. The nozzles are segmented to handle different operational states (fully open, partially open, venting positions) independently.
Solution Approach 2:
Different nozzle groups are positioned to deliver fire suppression agents to different locations within the fry vat based on lid position. When the lid is partially open or in venting position, nozzles positioned at the sides or top direct agent into the headspace or through opening to the overflow drain pipe, providing locally optimized protection for each operational state.
2Device complexity
If a single nozzle configuration is used for all lid positions, then device complexity is reduced, but fire protection effectiveness varies across different lid positions
Solution Approach 1:
The fire suppression system incorporates nozzles with different orientations and positions that can be selectively activated based on lid position. The system dynamically adapts to different operational states by utilizing appropriate nozzle groups, ensuring effective fire suppression regardless of whether the lid is fully open, partially open, or in venting position.
Solution Approach 2:
The fire suppression system is designed with multi-functional nozzle groups that can handle various lid positions and fire scenarios. The same piping network and reservoir serve multiple nozzle groups positioned at different locations, allowing the system to provide comprehensive fire protection across all operational states without requiring separate systems for each position.
3Reliability
If nozzles are positioned to direct agent into the vat when lid is fully open, then coverage for open position is achieved, but coverage for vented position through opening to overflow drain pipe is not provided
Solution Approach 1:
The nozzle system is segmented into different groups positioned to target specific areas. One group directs agent into the vat when fully open, while another group is positioned to direct agent through the opening to the overflow drain pipe when in vented position, ensuring both scenarios are covered by separate, dedicated nozzle groups.
Solution Approach 2:
Different nozzle groups are positioned to deliver fire suppression agents to different locations based on operational state. Nozzles are positioned to direct agent into the headspace or through the opening to the overflow drain pipe when in vented position, providing locally optimized protection for the vented position scenario.
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
Enhances fire protection by delivering fire suppression agents effectively across all lid positions, including fully open, closed, and vented states, thereby reducing the risk of fires in pressure fryers.
Implementation Method 1
The nozzle may be a flat spray (such as fan pattern) so more fire suppression agent may be inserted into the slot-shaped opening
Data Source
AI summary
A fire suppression system for a fryer is provided. The fire suppression system for the fryer may include a reservoir of fire suppression agent, piping connected to the reservoir, and one or more nozzles connected to the piping and configured to direct fire suppression agent into the fry vat when the lid is not in the fully open position (such as when the lid is in the closed/unlocked position). For example, when the lid is closed, a headspace may be created between the fry vat and an interior portion of the lid. When the lid is in the closed and unlocked position (creating an opening into the headspace for venting of the fry vat), the nozzle may be configured external to both the lid and the fry vat so that fire suppression agent is directed through the opening and into headspace of the fry vat.