H*g
5 楼
热水壶这个我知道,里面有个管子,把热蒸气通到下面的双金属片上去。
我有个旧热水壶出水地方的滤网坏掉,水沸腾的时候蒸气压力上不去,很难进管子,水壶就经常停不下来。
我有个旧热水壶出水地方的滤网坏掉,水沸腾的时候蒸气压力上不去,很难进管子,水壶就经常停不下来。
H*g
7 楼
Thankfully, virtually all modern kettles switch themselves off automatically
using thermostats (mechanical, electrical, or electronic devices that
respond to changes in temperature). Many are based on designs developed by
English inventor John C. Taylor, whose companies Otter Controls and Strix
Ltd have developed more than a billion thermostats of this kind worldwide.
How do they work? The simplest ones are mechanical and use a bimetallic
thermostat (described in our main article on thermostats) integrated into
the element unit at the bottom of the kettle. It consists of a disc of two
different metals bonded tightly together, one of which expands faster than
the other as the temperature rises. Normally the thermostat is curved in one
direction, but when the hot water reaches boiling point, the steam produced
hits the bimetallic thermostat and makes it suddenly snap and flex in the
opposite direction, a bit like an umbrella turning inside out in the wind.
When the thermostat snaps open, it pushes a lever that trips the circuit,
cuts off the electric current, and safely switches off the kettle. More
sophisticated kettle thermostats (used in systems such as the fashionable
Marco Über coffee boiler) are entirely electronic and allow water to be
heated to precise temperatures and maintained there indefinitely by
repeatedly switching the current on and off.
using thermostats (mechanical, electrical, or electronic devices that
respond to changes in temperature). Many are based on designs developed by
English inventor John C. Taylor, whose companies Otter Controls and Strix
Ltd have developed more than a billion thermostats of this kind worldwide.
How do they work? The simplest ones are mechanical and use a bimetallic
thermostat (described in our main article on thermostats) integrated into
the element unit at the bottom of the kettle. It consists of a disc of two
different metals bonded tightly together, one of which expands faster than
the other as the temperature rises. Normally the thermostat is curved in one
direction, but when the hot water reaches boiling point, the steam produced
hits the bimetallic thermostat and makes it suddenly snap and flex in the
opposite direction, a bit like an umbrella turning inside out in the wind.
When the thermostat snaps open, it pushes a lever that trips the circuit,
cuts off the electric current, and safely switches off the kettle. More
sophisticated kettle thermostats (used in systems such as the fashionable
Marco Über coffee boiler) are entirely electronic and allow water to be
heated to precise temperatures and maintained there indefinitely by
repeatedly switching the current on and off.
s*l
13 楼
有一次好像在电饭锅的说明书里面看到了是105度多长时间
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