Time-sharing power supply circuit and method, electromagnetic heating appliance
A time-sharing power supply and circuit technology, applied in the field of induction cooker, can solve the problems of increasing costs and consuming large power
Active Publication Date: 2021-03-30
ZHEJIANG SHAOXING SUPOR DOMESTIC ELECTRICAL APPLIANCE CO LTD
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Problems solved by technology
[0004] However, the motor pump consumes a lot of power when it is started or overloaded, and the power required by the motor pump to pump water of different water levels into the appliance to be heated (such as a kettle) is different, so that the power of the switching power supply must be increased. Power, in order to ensure that the switching power supply supplies power to the motor pump, fan and IH circuit at the same time, which increases the cost
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[0047] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of the embodiments of the present invention, but not all of them. Based on the embodiments in the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the embodiments of the present invention.
[0048] figure 1 The structural representation of the time-sharing power supply circuit provided by the present invention, as figure 1 As shown, the time-sharing power supply circuit 100 of this embodiment may include: a microcontroller unit (MCU) 101 , a switching power supply 102 , a motor pump 103 , a ...
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The invention provides a time-sharing power supply circuit and method, and an electromagnetic heating appliance. The circuit includes: MCU, switching power supply, motor pump, fan and electromagnetic heating IH circuit. When the water capacity in the appliance to be heated is less than or equal to the first threshold or when the pump start command is received, the MCU records the initial state of the fan and the IH circuit, and controls the IH circuit to stop working; when it detects that the current of the IH circuit is zero, it controls The fan stops working, and the motor pump is controlled to start working after a first preset time period. The MCU also controls the motor pump to stop working when the water capacity in the appliance to be heated is greater than or equal to the second threshold or receives a pump shutdown command; after the second preset time period, the fan is controlled to start working and return to the initial state of the fan, And control the IH circuit to start working after the third preset period of time and return to the initial state of the IH circuit. The invention realizes the time-sharing power supply of the switching power supply to the motor pump, the fan and the IH circuit.
Description
technical field [0001] The invention relates to electromagnetic oven technology, in particular to a time-sharing power supply circuit and method, and an electromagnetic heating appliance. Background technique [0002] Electromagnetic heating appliances have a wide range of applications, including rice cookers, electric pressure cookers, soybean milk makers, coffee machines, blenders, tea art induction cookers, etc., which can use the principle of electromagnetic induction to convert electrical energy into heat energy to heat the heating appliances. [0003] At present, the electromagnetic heating appliance usually uses a motor pump to realize the automatic water filling function, and the motor pump is generally driven by a DC motor, and is powered by a switching power supply in the electromagnetic heating appliance. In this way, the switching power supply not only needs to supply power to the motor pump, but also needs to supply power to the fan and the induction heat (IH) c...
Claims
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IPC IPC(8): H05B6/06
CPCH05B6/06
Inventor 周宇赵礼荣
Owner ZHEJIANG SHAOXING SUPOR DOMESTIC ELECTRICAL APPLIANCE CO LTD