Coffee bean machine-how to add pressure to the mocha pot and boil the oil
Coffee bean machine-how to add pressure to the mocha pot and boil the oil
The principle of the mocha pot is similar to that of the pressure cooker, and the most dangerous thing is the failure of the pressure relief valve of the mocha kettle; so first, we should choose a mocha pot of better quality, especially depending on the quality of the safety valve, and second, we should pay attention to the safe operation and use. There are about 200 million mocha pots in the world. The explosion of the mocha pot is actually a small probability event. There may be more incidents of siphon coffee pot breaking, but the pressure of the mocha pot explosion involves pressure, which may be frightening. But the pressure of the mocha pot is only slightly higher than the atmospheric pressure at most. Although the power of the explosion is very different from that of the pressure cooker, the possibility of hurting people cannot be ruled out. The explosion of the mocha pot is basically completely avoidable under the correct use of the mocha kettle; there is no necessity of the mocha pot explosion, only those who operate it improperly.
We should feel lucky when we see the small hole breathing. Because it shows that the mocha pot in front of you is a mocha pot of high quality. The small hole that will steam we generally call the pressure relief valve is a safety device, it can steam means that its function is normal, it can discharge too much pressure from the pot for you, so as to avoid the danger of explosion of the mocha kettle. Generally speaking, the pressure relief valve can be regarded as a standby role, but it may occur in the following two situations.
Situation 1:
Coffee powder grinding is too fine and excessive filling when filling the powder trough, these two actions appear at the same time in the use of mocha pot is more inappropriate. Because it is not a heat exchanger with enough pressure or a household pump, the water vapor pressure generated by the mocha kettle is not enough to penetrate the compact powder layer you have filled, and continuous heating will cause a continuous increase in water vapor. but if too much vapor pressure cannot be eliminated, the mocha pot will easily explode.
Of course, the pressure on the lower seat has been increasing all the time, just like blowing a balloon to blow up the mocha pot and exploding, at this time, the pressure relief valve set up for safety will play a role in draining the excessive pressure and mixing it with the water vapor to improve the method is very simple, do not grind so fine, as long as it is a little finer than the siphon pot; do not over-fill, tap the powder trough to make the coffee powder dense.
In this case, we need to take the mocha kettle to the store to see if it is necessary to change the parts in the pressure relief valve, and in case not, don't be discouraged to look in the phone book to see if there are any available hydraulic fittings. They will have all kinds of O-ring to try their luck to see if there is a size matching o-ring that can be replaced. Or else it will be scrapped! No one likes to turn brewing coffee into Russian roulette so that the mocha pot explodes.
As the saying goes, prevention is better than cure! So you can also take precautions for the body of your mocha kettle: when heating with a mocha kettle, the flame of the gas stove should not exceed the bottom area of the lower seat, so that the flame will burn to the bottom of the lower seat and the pressure relief valve itself. In general, plastic articles are brittle and lose their elasticity in dry and hot conditions.
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