Invention Grant
US09012821B2 Digital control type power converter for cooking utensils 有权
数字控制式炊具用电源转换器

  • Patent Title: Digital control type power converter for cooking utensils
  • Patent Title (中): 数字控制式炊具用电源转换器
  • Application No.: US13381090
    Application Date: 2010-05-19
  • Publication No.: US09012821B2
    Publication Date: 2015-04-21
  • Inventor: Shouqing QiuSamson Xu
  • Applicant: Shouqing QiuSamson Xu
  • Applicant Address: CN Shenzhen, Guangdong
  • Assignee: Shenzhen CHK Co., Ltd.
  • Current Assignee: Shenzhen CHK Co., Ltd.
  • Current Assignee Address: CN Shenzhen, Guangdong
  • Agency: Jackson IPG PLLC
  • Agent Demian K. Jackson
  • Priority: CN200910108604 20090707
  • International Application: PCT/CN2010/072917 WO 20100519
  • International Announcement: WO2011/003301 WO 20110113
  • Main IPC: H05B6/62
  • IPC: H05B6/62 H05B6/06
Digital control type power converter for cooking utensils
Abstract:
A digital control type power converter for cooking utensils includes a rectifier; a power inverting circuit composed of an IGBT and an LC shunt-resonant circuit; and a SoC chip which internally integrates a MPU, a Programmable Pulse Generator (PPG), an ADC, a COM, wherein the PPG, the ADC and the COM are connected to the MPU. One output of the MPU is connected to the PPG through a first AND gate, and a pulse signal outputted by the PPG is transmitted to the IGBT through a second AND gate. The MPU calculates the present power value according to measured current and voltage signals, and compares the present power value with the required power of the host computer to change the set pulse width value of the PPG. When a magnetic energy conversion detecting circuit outputs an enabling signal, the PPG outputs the pulse signal with the setting pulse width to drive the IGBT and realize the regulation of power. Since this converter can receive man-machine operating instructions and dynamically change its output power, the inductive structure in the resonant circuit can be appropriately changed to be applied to high-frequency heating equipment, such as a microwave oven, an electromagnetic oven, and the alike.
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