A kind of heated protective system of water purifierTechnical field
The present invention relates to a kind of water purifier, particularly a kind of heated protective system of water purifier.
Background technology
At present, water purifier as the emerging product of one, wide market.On existing market, the water purification heating integrated machine of more than 80% is all the mode adopting the heating of hot tank; but the mode of this hot tank heating just places 2 anti-dry temperature protectors mostly on hot tank; after actual dry combustion method reaches anti-dry protection temperature; anti-dry temperature protector disconnects; heating rod stops heating; and the hot tank of sky can also be heated to the high temperature of 200 ° by the remaining temperature of heating rod; so when actual anti-dry temperature control protection; if there is dry combustion method; the life-span of hot tank can be substantially reduced, complete machine time serious, can be caused to catch fire.
Although the existing water purification heating integrated machine employing temperature sensor on market, but the heating system due to water purification heating integrated machine is communicated with, hot tank exhaust outlet is smaller, exhaust velocity is slow, in the actual heating process of hot tank, do not consider the situation that excess temperature sensor comes off, once temperature sensor comes off, the environment temperature that detects of coming off can not the temperature of reflect heat tank, heating just can not stop, even if the water boiling in hot tank can not stop heating, the pressure in hot tank now will be caused to raise, there is the danger of explosion.
Summary of the invention
Technical problem to be solved by this invention is for the deficiencies in the prior art, provides a kind of reasonable in design, improves the heated protective system of the water purifier of security of system.
Technical problem to be solved by this invention is realized by following technical scheme, and the present invention is a kind of heated protective system of water purifier, comprises the hot tank connected with storage tank, hot tank heater and automatically controlled control centre, be characterized in,
Described hot tank heater comprises the heating rod be arranged in hot tank and the temperature sensor be close on hot tank wall,
Automatically controlled control centre is provided with governor circuit, and heating rod is connected with governor circuit by relay, and temperature sensor connects with governor circuit, and described governor circuit is provided with system protection unit,
The temperature that system protection unit comprises detected temperatures sensor each moment obtains the detection module of heating rate, and carries out with the heating rate of setting the comparison module that contrasts,
When the heating rate detected reaches the dry combustion method speed of setting, system protection unit starts anti-dry pattern, closed relay, and heating rod stops heating; When the heating rate detected reaches the temperature sensor fault speed of setting, system protection unit start-up temperature sensor fault protected mode, closed relay, heating rod stops heating, realizes heated protective.
Technical problem to be solved by this invention can also be realized further by following technical scheme, described hot tank is provided with tank body, tank body passes through the bottom connection of hot tank water inlet pipe and storage tank, the top of tank body is provided with hot tank blast pipe, hot tank blast pipe connects with the top of storage tank, and tank body is provided with the outlet pipe with going out water solenoid valve.
Technical problem to be solved by this invention can also be realized further by following technical scheme, and the outer wall of described hot tank is provided with two anti-dry temperature control protection switches, and two anti-dry temperature control protection switches connect with two interfaces of heating rod respectively.
Technical problem to be solved by this invention can also be realized further by following technical scheme, and set dry combustion method speed is that temperature rises 5 °-10 ° in 15-25s.
Technical problem to be solved by this invention can also be realized further by following technical scheme, set temperature sensor fault speed be the laser heating time more than 4-7 minute, temperature rises 0 °-5 °.
Compared with prior art; the present invention is by establishing governor circuit, detection module and comparison module; water purifier heating system is combined with control technology; control the break-make of heating system and the startup of anti-dry pattern and temperature sensor fault protected mode; thus realize dry combustion method, temperature sensor short circuit, temperature sensor open circuit and the protection of heating system under the situation such as to drop; provide comparatively comprehensively safeguard measure, it is reasonable in design, and structure is simple.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Detailed description of the invention
Referring to accompanying drawing, further describe concrete technical scheme of the present invention, so that those skilled in the art understands the present invention further, and do not form the restriction to its right.
With reference to Fig. 1, a kind of heated protective system of water purifier, comprises the hot tank 1 connected with storage tank 4, hot tank heater and automatically controlled control centre,
Described hot tank heater comprises the heating rod be arranged in hot tank 1 and the temperature sensor 2 be close on hot tank 1 outer wall,
Automatically controlled control centre is provided with governor circuit, and heating rod is connected with governor circuit by relay, and temperature sensor connects with governor circuit, and described governor circuit is provided with system protection unit,
The temperature that system protection unit comprises detected temperatures sensor 2 each moment obtains the detection module of heating rate, and carries out with the heating rate of setting the comparison module that contrasts,
When the heating rate detected reaches the dry combustion method speed of setting, system protection unit starts anti-dry pattern, closed relay, and heating rod stops heating; When the heating rate detected reaches the temperature sensor fault speed of setting, system protection unit start-up temperature sensor fault protected mode, closed relay, heating rod stops heating, realizes heated protective.
Described hot tank 1 is provided with tank body, and tank body is by the bottom connection of hot tank water inlet pipe 5 with storage tank 4, and the top of tank body is provided with hot tank blast pipe 3, and hot tank blast pipe 3 connects with the top of storage tank 4, and tank body is provided with the outlet pipe 6 with going out water solenoid valve 7.
The outer wall of described hot tank 1 is provided with two anti-dry temperature control protection switches, and two anti-dry temperature control protection switches connect with two interfaces of heating rod respectively.
Set dry combustion method speed is that temperature rises 5 °-10 ° in 15-25s.
Set temperature sensor fault speed be the laser heating time more than 4-7 minute, temperature rises 0 °-5 °.
Under normal operation, when the hot tank temperature that temperature sensor 2 detects is less than the lowest temperature of automatically controlled control centre setting, governor circuit control relay, heating rod works, and hot tank 1 heats, and hot tank temperature raises, when the hot tank temperature that temperature sensor 2 detects is greater than the temperature upper limit of automatically controlled control centre setting, governor circuit control relay, heating rod quits work, and the temperature of hot tank 1 no longer rises.
When temperature sensor 2 is without short circuit or open circuit fault, the temperature that automatically controlled control centre receives rises 5 ° in 20s, then governor circuit starts anti-dry pattern, even if when hot tank does not have water, heating rod heats, before reaching anti-dry protection temperature, just can report fault in advance very soon, there is provided to hot tank and protect timely, long-time dry combustion method would not be produced like this and affect life-span of heating rod, also would not have the risk of catching fire; The temperature received when automatically controlled control centre in the laser heating time more than 5 minutes; and temperature rising value is less than 3 °; then report temperature sensor fault; start-up temperature sensor fault protected mode; heating rod stops heating; can available protecting temperature sensor come off do not stop heat situation, prevent because laser heating causes pressure increase in hot tank tank to blast, the safe handling for water purifier provides effective safeguard measure.