[Fire Safety Trio] 2L Fire Extinguisher, Fire Flannel, Independent Fire (Smoke) Detector - A Must-Have for Every Home

Essential Fire Prevention Supplies for Every Home

Super Dragon - 2L Water-Based Fire Extinguisher

Immediately extinguishes fires and prevents their spread.

GuardiAngel Smoke Detector (WiFi)

Detects smoke and helps detect fires early.

Jiang Nan Fire Blanket

Extinguishes fires and wraps around the body.

Hong Kong Fire Services Department Guidelines: Standalone Fire Detectors - General Guidelines for Purchase, Installation and Maintenance 

Handheld water-based fire extinguishers (water mist) are a new type of handheld fire extinguisher developed in recent years based on the widespread application of fine water mist automatic fire extinguishing systems. They are popular due to their wide range of fire extinguishing capabilities, good fire extinguishing effect, and clean and environmentally friendly characteristics.

I. Main Structure and Principle of Fire Extinguishers

1. Main Structure of Fire Extinguishers: Composed of a cylinder, head element, pressure indicator, nozzle, extinguishing agent (made of clean water and additives), and propellant gas. Because both the extinguishing agent and propellant gas are contained within the same cylinder, handheld water-based fire extinguishers (water mist) belong to the pressurized fire extinguisher category.

2. Fire Extinguisher Working Principle: When the handle is pressed down, the extinguishing head (valve) is opened. Under the pressure of the driving gas, the extinguishing agent inside the cylinder is sprayed out through the nozzle, forming a water mist that is directed towards the fire scene, thus initiating fire extinguishing.

II. Fire Extinguishing Mechanism and Characteristics

1. Fire Extinguishing Mechanism:

(1) Due to the small droplets and large specific surface area, the droplets evaporate, producing a large amount of water vapor and absorbing a large amount of heat, rapidly lowering the ambient temperature around the fire scene.

(2) The water mist evaporates, producing a large amount of steam, which rapidly expands in volume, reducing the oxygen concentration around the fire scene and isolating oxygen.

(3) The water mist is directly sprayed onto the burning material, providing emulsification, wetting, and cooling effects.

(4) The water mist surrounds and protects other fuels in the protected area, blocking radiant heat from reaching nearby burning materials.。