What are the security risks of the old gas stove

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The gas stove is the core of every household’s kitchen, but if it has been in service for many years and looks old, you may not realize that it may no longer be a safe cooking tool, but a hidden collection of multiple fatal risks.

(1)、1 of hidden danger: failure of ignition device

1. causes of risk

The failure of the ignition device of the old gas stove is usually due to the long-term use of piezoelectric ceramics or pulse igniters due to aging, wear or moisture, resulting in the inability to generate electric sparks with sufficient energy.

2. danger signal

①. When the ignition switch is turned, there is no electric spark or the spark is weak, and the gas cannot be ignited.

②. It takes many, long attempts to accidentally ignite.

3. potential Consequences

If the ignition fails for many times and the gas valve is not closed in time, it will lead to a large amount of gas leakage and accumulation around the furnace head. In case of open fire or electric spark, it is easy to cause flash explosion and fire, causing personal injury and property damage.

(2)、Hidden danger 2: missing flameout protection function

1. causes of risk

Many old models of gas stoves are not forced to install flameout protection devices (such as thermocouples or ion induction needles) during design and manufacture, resulting in gas valves that cannot be automatically closed when the flame is accidentally extinguished (such as being blown by the wind or doused by soup).

2. danger signal

①. After the flame was accidentally extinguished, the gas continued to spray out, and the sound of “hissing” air leakage could be heard.

②. Some cookers show that the flame goes out when the knob is released and must be pressed all the time to maintain it.

3. potential Consequences

Cause continuous gas leakage. When the leaked gas reaches the explosion limit in the airtight kitchen, it will cause an explosion or fire in any fire source, which is a family safety accident with extremely serious consequences.

(3)、3 of hidden dangers: aging and damage of gas hose

1. causes of risk

The rubber hose connecting the stove and the pipeline valve is prone to hardening, cracking and loosening of the interface due to long-term corrosion of oil fume, high temperature baking or friction in the cabinet.

2. danger signal

The surface of the hose is hard, sticky, cracked or broken.

3. potential Consequences

Gas leakage from the damaged or interface is the most common and direct gas leakage point in the family. The leaked gas may cause fire and explosion when exposed to open fire, or cause hypoxia and suffocation in poorly ventilated places.

(4)、4 of hidden dangers: aging of stove structure and deformation of parts

1. causes of risk

Gas stove in the long-term high temperature, corrosion (oil, salt, etc.) and frequent alternating hot and cold environment, metal parts are prone to rust, deformation or cracking.

2. specific performance

①. Cooktop panels (especially glass panels) are cracked and warped.

②. Burner (fire cover) is seriously rusted and deformed.

2. potential Consequences

Structural failure may directly ignite nearby items or cause gas leakage. The sudden burst of the panel will cause personnel to cut and burn, and the deformation of the parts will lead to uneven flame distribution, reduce the combustion efficiency, and may ignite the overflow of soup or combustible materials, increasing the risk of fire.

(5)、5 of hidden dangers: insulation failure of electrical circuit

1. causes of risk

The electric wires inside the stove are long-term eroded by high temperature roasting and lampblack, resulting in embrittlement, breakage and even carbonization of the insulating layer.

2. danger signal

Abnormality occurs after the stove is powered on (such as the display screen is garbled and the igniter works by itself), and burnt smell can be smelled. In severe cases, the wire is exposed, and the plug or circuit board has burning marks.

3. potential Consequences

Causing an electrical short circuit, producing an electric spark or local high temperature, which may directly ignite the leaked gas or surrounding combustibles and cause a fire. At the same time, there is a risk of electric shock.

(6)、Hidden danger six: insufficient combustion

1. causes of risk

The fire hole of the stove burner is blocked due to long-term oil pollution, corrosion or deformation, or the air intake is improperly adjusted, resulting in an imbalance in the mixing ratio of gas and air.

2. danger signal

Flame is yellow or red, the flame is weak, erratic, elongated (out of flame), the bottom of the pot is quickly blackened, burning produces obvious odor and black smoke, low thermal efficiency.

3. potential Consequences

Incomplete combustion of gas produces large amounts of toxic carbon monoxide (CO). In poorly ventilated kitchens, it can easily lead to carbon monoxide poisoning, dizziness, nausea, coma, and fatal in severe cases. At the same time, carbon deposition will aggravate the blockage of the stove, forming a vicious circle.

(7)、Hidden seven: connecting valve and pipeline sealing failure

1. causes of risk

The rubber sealing gasket at the interface between the valve and the pipeline connecting the stove loses its elasticity due to long-term thermal aging. Or the fixing clamp is loose

and the metal joint is corroded and deformed, resulting in loose sealing.

2. main performance

①. In the stove is not used or after the valve is closed, you can still smell the gas odor.

②. Apply soapy water to the valve interface, valve stem, etc., and continuous bubble generation will be observed.

③. Valve knob feel loose or abnormal resistance.

3. potential Consequences

Leakage at the connection is one of the most dangerous hidden dangers in the use of liquefied gas. Liquefied gas is heavier than air. After leakage, it will accumulate in the low-lying ground and is not easy to spread, forming a large range of explosive mixed gas, which can cause violent explosion in case of extremely small fire source, with extremely destructive power. Failure of the pressure reducing valve may also cause high-pressure gas to directly rush into the stove, causing a fire.

Conclusion

Safety is no small matter, prevent in peacetime. Remember, any potential safety hazard should not be ignored or delayed-a normal ignition failure, 1 gas odor that should not exist, or a gradually hardened connecting hose can be a dangerous knock on the door. If your gas stove has any of the dangerous signs mentioned in the article, please be sure to pay attention to it and contact a professional for maintenance or replacement as soon as possible. Let us start from the details, eliminate hidden dangers before they occur, and jointly create a more secure and healthy home environment.