A kind of control method of heater circuit of soy bean milk making machine
Technical field
The present invention relates to a kind of soy bean milk making machine, relate in particular to a kind of heater circuit and control method thereof of soy bean milk making machine.
Background technology
Present commercially available full-automatic soybean milk machine; Especially adopt the soy bean milk making machine of bottom heating; Excessive or heating-up temperature is too high or other reasons when causing sticking with paste the end when food materials in the cup; The part soy bean milk making machine can't stop heating automatically, but continues heating, and then causes at the bottom of the more serious paste phenomenon even security incident to take place; The part soy bean milk making machine is then taked to install temperature controller additional in the bottom; Temperature controller breaks off when heating-up temperature has surpassed the critical temperature of temperature controller shutoff; Heating tube stops heating, but control module MCU can't detect the phenomenon whether end has taken place to stick with paste, even temperature descends again and when being lower than the critical temperature of temperature controller; Temperature controller can not reset automatically, and tends to cause slurrying unsuccessful.
Summary of the invention
The technical matters that the present invention will solve provides a kind of effectively preventing and sticks with paste end phenomenon, has improved the heater circuit and the control method thereof of the soy bean milk making machine of slurrying efficient.
In order to solve the problems of the technologies described above, the present invention takes following technical scheme:
A kind of heater circuit of soy bean milk making machine; Comprise control module MCU, power control circuit, testing circuit and heating tube; Power control circuit is connected with MCU through circuit, and heating tube is connected in series through circuit and power control circuit, also comprises temperature switch; Said testing circuit input end is connected with heating tube one end, output terminal is connected with MCU, and temperature switch and heating tube are connected in series.
The present invention has also disclosed the control method of aforesaid heater circuit; Temperature switch automatic cutout when the break-off signal value T1 of the temperature T >=setting on the temperature switch; Testing circuit detects and sends a cut-off signal to control module MCU after temperature switch breaks off simultaneously, and MCU gives an order and makes power control circuit stop heating work;
Temperature switch is connected automatically when the start-up temperature value T2 of the temperature T<setting on the temperature switch, and testing circuit detects temperature switch and connects the back and send a connection signal and give control module MCU simultaneously, and MCU gives an order and makes power control circuit start heating work.
The break-off signal value is 120 ℃≤T1≤140 ℃, and the start-up temperature value is 110 ℃≤T2<120 ℃.
The present invention responds to the cup bottom temp in real time through in heater circuit, installing temperature switch, makes soy bean milk making machine thermal anomaly or heating in heating process, occur adding when not stopping, and temperature switch prevents the end problem of sticking with paste according to predefined temperature automatic cutout; When temperature reduced, testing circuit sent signal again and restarts heating for control module MCU, and power control circuit carries out power control, guarantees the slurrying success.
Description of drawings
Accompanying drawing 1 is the schematic diagram of heater circuit of the present invention.
Embodiment
For the ease of those skilled in the art's understanding, the present invention is done further description below in conjunction with accompanying drawing.
A kind of heater circuit of soy bean milk making machine; Comprise control module MCU, power control circuit, testing circuit and heating tube 1; Power control circuit is connected with control module MCU through circuit, and heating tube 1 is connected in series through circuit and power control circuit, also comprises temperature switch 2; Said testing circuit input end is connected with heating tube one end, output terminal is connected with control module MCU, and temperature switch 2 is connected in series with heating tube 1.
Control method according to the heater circuit of aforesaid soy bean milk making machine; Temperature switch automatic cutout when the break-off signal value T1 of the temperature T >=setting on the temperature switch; Testing circuit detects and sends a cut-off signal to control module MCU after temperature switch breaks off simultaneously, and MCU gives an order and makes power control circuit stop heating work;
Temperature switch is connected automatically when the start-up temperature value T2 of the temperature T<setting on the temperature switch, and testing circuit detects temperature switch and connects the back and send a connection signal and give control module MCU simultaneously, and MCU gives an order and makes power control circuit start heating work.
Wherein, the break-off signal value is 120 ℃≤T1≤140 ℃, and the start-up temperature value is 110 ℃≤T2<120 ℃.
In addition; The control module MCU that uses in the soy bean milk making machine, testing circuit all are existing known technologies, and control module MCU and testing circuit can adopt existing integrated chip, and its implementation is various; Be not to be the invention main points place before this, do not remake in detail at this and give unnecessary details.
Embodiment one; Temperature switch automatic cutout when 120 ℃ of temperature T on the temperature switch >=predefined break-off signal; Testing circuit detects and sends a cut-off signal to control module MCU after temperature switch breaks off simultaneously, and MCU gives an order and makes power control circuit stop heating work; Temperature switch is connected automatically when 110 ℃ of temperature T on the temperature switch<predefined start-up temperature; Testing circuit detects temperature switch and connects back connection signal of transmission to control module MCU simultaneously, and MCU gives an order and makes power control circuit start heating work.Effectively guarantee the success of slurrying.
Embodiment two; Temperature switch automatic cutout when 130 ℃ of temperature T on the temperature switch >=predefined break-off signal; Testing circuit detects and sends a cut-off signal to control module MCU after temperature switch breaks off simultaneously, and MCU gives an order and makes power control circuit stop heating work; Temperature switch is connected automatically when 115 ℃ of temperature T on the temperature switch<predefined start-up temperature; Testing circuit detects temperature switch and connects back connection signal of transmission to control module MCU simultaneously, and MCU gives an order and makes power control circuit start heating work.Effectively guarantee the success of slurrying.
Embodiment three; The temperature sky closes automatic cutout when 140 ℃ of temperature T on the temperature switch >=predefined break-off signal; Testing circuit detects and sends a cut-off signal to control module MCU after temperature switch breaks off simultaneously, and MCU gives an order and makes power control circuit stop heating work; Temperature switch is connected automatically when 119 ℃ of temperature T on the temperature switch<predefined start-up temperature; Testing circuit detects temperature switch and connects back connection signal of transmission to control module MCU simultaneously, and MCU gives an order and makes power control circuit start heating work.Effectively guarantee the success of slurrying.
Above embodiment is the preferable implementation of the present invention, under the prerequisite that does not break away from inventive concept of the present invention, only is that logarithm value is made trickle variation, or other any conspicuous replacements, all within protection scope of the present invention.