There are many types of classification, mainly based on monocular and binocular; Single use, dual-use; The categories include regular, ultra-thin, and mini. The difference between single use and dual-use lies in the different air inlet devices on the regulator. Single use card furnaces are only suitable for installing butane gas cylinders, while dual-use card furnaces are suitable for burning household liquefied gas in addition to single use functions.

During operation, butane gas enters the regulator from the butane cylinder and is adjusted by the regulator (which can be adjusted by the user through a knob) before entering the furnace head. At the same time, a portion of the air (referred to as primary air) is mixed, and this mixed gas is ejected from the flame hole of the separator and ignited by the ignition device to form a flame (the air required for combustion is referred to as secondary air). These flames are used to heat cooking utensils placed on the pot holder.

The major advantage of using piezoelectric ceramics for ignition is that it does not require batteries. However, the success rate of ignition is related to environmental humidity, and it is not easy to ignite when the humidity is high. In addition, when igniting, the switch needs to be held down to start the fire, which is not as fast as electronic pulse ignition. The production quality and reliability, process level, degree of automation and intelligence, progressiveness of performance indicators, energy conservation and environmental protection, safe use and other aspects have also been improved. The regulator of the card furnace has basically eliminated screw valves. The safety of the plug valve card furnace, the delicate and exquisite appearance treatment, the heat-resistant furnace shell and pot frame, the piezoelectric ceramic ignition tens of thousands of times, and the printing process are the mainstream consumption in the card furnace market.