Types of fire extinguishers

There are many types of fire extinguishers, which can be divided into portable and trolley types; according to the power source of driving the extinguishing agent can be divided into storage cylinder type, storage pressure type, chemical reaction type; according to the filled extinguishing agent can be divided into foam, dry powder, halogenated alkane, carbon dioxide, water, etc. We have already briefly introduced dry powder fire extinguishers, foam fire extinguishers, and carbon dioxide fire extinguishers, and we will not dwell too much on these three in this article, mainly focusing on water fire extinguishers, simple fire extinguishers, and aerosol fire extinguishers, a brief introduction to these three types of fire extinguishers.

Here is the list of contents

• Water fire extinguishers

• Simple fire extinguisher

• Aerosol fire extinguisher

Water fire extinguisher

The extinguishing agent in the water fire extinguisher is water. Water at room temperature has a low viscosity, high thermal stability, high density, and high surface tension, is an ancient and widely used natural fire extinguishing agent, easy to obtain and store. It mainly relies on cooling and asphyxiation to extinguish the fire. Because every kilogram of water heated from room temperature to boiling point and completely evaporated vaporization can absorb 2593.4KJ of heat. Therefore, it uses its own ability to absorb sensible heat and latent heat to play the role of cooling fire, which is unmatched by other fire extinguishing agents. In addition, the water vaporized after the formation of water vapor for the inert gas, and the volume will expand about 1700 times.

In the fire, the water vapor generated by water vaporization will occupy the space of the burning area, dilute the oxygen content around the combustion products, preventing fresh air from entering the combustion area, so that the oxygen concentration in the combustion area is greatly reduced, so as to achieve the purpose of asphyxiation fire. When the water is sprayed mist, the formation of water droplets and droplets of specific surface area will greatly increase, enhancing the role of heat exchange between water and fire, thereby strengthening its cooling and asphyxiation.

In addition, some easily soluble in water combustible, flammable liquids can also play a diluting role; the use of strong jets of water mist can make combustible, flammable liquids emulsification, so that the liquid surface quickly cooled, combustible vapor production rate decreases and achieve the purpose of fire extinguishing.

Simple fire extinguisher

A simple fire extinguisher is a lightweight fire extinguisher developed in recent years. It is characterized by less than 500 grams of extinguishing agent charge, the pressure of 0.8 MPa or less, and is a one-time use, cannot refill the small fire extinguisher. A simple fire extinguisher is more suitable to always have at home to extinguish sudden fire situations. We will leave the information about simple fire extinguishers in the next article "How to use a simple fire extinguisher".

Aerosol fire extinguishers

The application of aerosols in fire extinguishing engineering began in the military technology, aerosol fire extinguishing agents used in some organic chemicals and oil and other liquid storage tanks in the tank fire and the military armored vehicles, tanks, explosion suppression system. A portable aerosol fire extinguisher is a new breakthrough in the field of fire extinguisher applications. Combining high-efficiency aerosol producing agent and fire extinguishing particle generator, using the heat and power of the aerosol agent to produce fire extinguishing gas to make the fire extinguishing particle generator decompose and release high-efficiency fire extinguishing particles, which is better than traditional fire extinguishers in terms of portability, safety, and fire extinguishing ability.

Nanjing Jiayi Fire Technology Co., Ltd produces and manufactures many types of fire extinguishers, which can meet the current fire extinguishing needs of many places. If you are interested in our products and want to get more information or quotation, welcome to send us a message!