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>>>Experts teach you to identify good and bad gas cookers
Cookware purchase five points
1 gas stove types should be suitable for local gas source
It is necessary to know whether the gas used in their homes is natural gas, artificial gas or liquefied petroleum gas. The calorific value and the gas pressure of these three types of gases are different. If the types of cooking appliances are inconsistent with the gas, danger may occur. Do not mix cooking utensils used for different air sources. Before buying cooking utensils, you should be clear about the type of gas used. Customers should pay attention to what kind of gas is clearly shown on the packing box when they purchase domestic gas stoves, and can also identify gas types from the type of domestic gas stoves. For household gas stoves such as model JZ-2T-A, J stands for home, Z stands for stove, 2 stands for two stoves, and T stands for natural gas. If the letter is R, it means artificial gas, and Y means liquefied petroleum gas.
2. The packaging and logo should be complete
This is very important. If it is a "three-nothing" product, it must not be purchased lightly, or it may pose a danger to your personal safety. In general, the name, address and model of the factory should be marked on the packaging, and each cooker should have a certificate of conformity. In the instruction manual, the nameplate (namely the product trademark) shall be on the side panel of the cooker, and the name, model, applicable gas and pressure, heat flux, and production date shall be marked on the nameplate.
3. Proper heat flow and good airtightness
Heat flow: The larger the heat flow rate of the domestic gas stove design is, the stronger the heating capacity is, ie, the fiercer fire power is usually referred to. However, in practice, the size of the heat flux should be adapted to the cooking method and the cooking appliance. If only a large heat flux is required, the heat efficiency of the cooking appliance will be greatly reduced, and the waste gas emission will also be increased.
Airtightness: If the stoves purchased and used are not airtight, it is the greatest potential safety hazard. Here to introduce a simple detection method: connect the air source, close the knob, brush the plastic pipe, body and interface piece with soap, if there is no gas leakage, it means that the airtightness is good, and you can rest assured to buy.
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4. Body Quality and Ignition Switch
Body quality selection: The appearance of the gas stove should be beautiful, there is no collision phenomenon in the body, and the tabletop is pressed by hand. There should be no obvious warping degree; when the hand holds the two diagonal corners of the cooking appliance, the cooking appliance should not be deformed, and the panel material of the cooking appliance cannot use tinplate (magnetic adsorption can be used to distinguish whether tinplate or stainless steel material is used); some are cast iron, steel plates, etc. The surface painting of the products made of materials shall be even and smooth without blistering or shedding. The overall structure of the gas stove should be stable and reliable, the stove surface should be smooth and flat, no obvious warpage, and the installation of the components should be solid and reliable, and there should be no loosening phenomenon. The stove head and fire lid of the stove should be finely processed without obvious burrs.
Ignition switch: The position of the ignition switch, ie ON (0N) and OFF (OFF), and the positions of large and small fires (generally with a pattern logo) should be clearly marked; when sounded with an electronic ignition switch, the sound should be crisp and powerful. If the sound of sparking is soft and the sound is boring, it is probably a shoddy product. Generally, the qualified cooker ignition switch has a continuous service life of more than 6,000 times, and the airtightness of the plug is still qualified; while the number of low-quality product ignition is below 2,000 times. In general, if the qualified product is fired continuously for 10 times, the number of ignitions shall not be less than 8 times, and all fire holes shall be burned in 4 seconds.
5. Flame combustion state
This is an important manifestation of the quality of stove burning, in general, the outer flame should be light blue when burning. (Sometimes it may be orange, which means there is impurities or a small amount of air in the gas, but it does not affect the normal use). After ignition, adjust the flame size control button. The large and small fire should be clearly visible and stable. Even if it is adjusted to the minimum state or the valve is closed down, it should still be able to burn normally, not to skip fire, not to extinguish, and not to be tempered.
In general, a good gas stove has a service life of 5-10 years (according to the relevant state regulations, that is, the standard sparks no less than 5,000 times), while a poor quality gas stove has a service life of only 1-2 years and is in use. It will cause unsafe personal injury and death. In addition, due to the different gas temperament in different regions, especially the artificial gas, the difference is large. When consumers purchase gas stoves, it is best to use gas stoves that are approved by the local quality inspection department and are suitable for local gas sources.
How to maintain the stove?
1. Love the cooker and keep it clean. The fire hole on the burner is easy to be contaminated by porridge, soup, concoction, dust and other dirt, should be decontamination at any time, wipe off water stains, and commonly used thin wire to clear the fire hole to keep the stove clean, gas flow.
2. Always check the sealing performance of the plug valve (the valve at the metal pipe and the rubber pipe joint) and oil it in time.
3. Always check the connecting hoses for cracking and aging. If any problems are found, replace the new hose.
4. After burning for a long time, the temperature of the cooking appliance is high, and it is necessary to prevent drip cooling water, so as to avoid peeling off the paint on the cooking surface.
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