Electromagnetic heating system, and zero-crossing switched-on detection method and device of switch tube

A heating system and detection device technology, applied in the direction of induction heating, induction heating control, home appliance efficiency improvement, etc., can solve the problems of difficult energy efficiency improvement, high IGBT heat, and limitation of induction cooker heating efficiency, so as to improve energy efficiency, improve heating efficiency, Achieving an adaptive effect

Active Publication Date: 2016-10-05
FOSHAN SHUNDE MIDEA ELECTRICAL HEATING APPLIANCES MFG CO LTD +1
View PDF4 Cites 17 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the IGBT can only be turned on based on empirical values. In order to prevent the IGBT from being turned on ahead of time or lagging behind, the IGBT only works in a very narrow working range, and it is impossible to make corresponding judgments when factors such as disc spacing, voltage, and

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Electromagnetic heating system, and zero-crossing switched-on detection method and device of switch tube
  • Electromagnetic heating system, and zero-crossing switched-on detection method and device of switch tube
  • Electromagnetic heating system, and zero-crossing switched-on detection method and device of switch tube

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0027] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings, in which the same or similar reference numerals indicate the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary, and are only used to explain the present invention, and cannot be construed as limiting the present invention.

[0028] The following disclosure provides many different embodiments or examples for implementing different structures of the present invention. In order to simplify the disclosure of the present invention, the components and settings of specific examples are described below. Of course, they are only examples, and are not intended to limit the invention. In addition, the present invention may repeat reference numbers and / or letters in different examples. This repetition is for the purpose of simplificat...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a zero-crossing switched-on detection device of a switch tube in an electromagnetic heating system. The device comprises a current detection circuit for detecting the loop current of a resonant circuit, a pulse detection circuit which processes loop current to output a first pulse signal, a master control unit which is connected to the driving circuit and the pulse detection circuit and comprises a first counter which counts the first pulse signals and increases the switched-on time interval of the switch tube if the counting value of the first counter is larger than a preset value in a preset time such that a driving circuit drives the switch tube to be in zero-crossing switched-on. The zero-crossing switched-on detection device can automatically adjust the switch-on time interval of the switch tube and allow the switch tube to be zero-crossing switched-on, and the energy efficiency of the electromagnetic heating system is improved. The invention also discloses the electromagnetic heating system and a zero-crossing switched-on detection method of the switch tube in the electromagnetic heating system.

Description

technical field [0001] The invention relates to the technical field of household appliances, in particular to a zero-crossing turn-on detection device for a switch tube in an electromagnetic heating system, an electromagnetic heating system and a zero-crossing turn-on detection method for a switch tube in the electromagnetic heating system. Background technique [0002] At present, the circuit scheme of the induction cooker is mainly a single-tube IGBT (Insulated Gate Bipolar Transistor, insulated gate bipolar transistor) scheme. By judging the voltage division value at both ends of the coil disk and the resonant capacitor, the IGBT is flipped and turned on according to the synchronous comparison signal. [0003] However, the IGBT can only be turned on based on empirical values. In order to prevent the IGBT from being turned on ahead of time or lagging behind, the IGBT only works in a very narrow working range, and it is impossible to make corresponding judgments when factors...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): H05B6/06
CPCY02B70/10
Inventor 冯江平
Owner FOSHAN SHUNDE MIDEA ELECTRICAL HEATING APPLIANCES MFG CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap