CN2366729Y

CN2366729Y - Device for controlling microwave oven

Info

Publication number: CN2366729Y
Application number: CN 99219501
Authority: CN
Inventors: 辛涛
Original assignee: Qingdao Household Electric Appliances Institute
Current assignee: Qingdao Household Electric Appliances Institute
Priority date: 1999-01-04
Filing date: 1999-01-04
Publication date: 2000-03-01
Anticipated expiration: 2009-01-04

Abstract

The utility model provides the technical proposal of a controlling device of a microwave oven, which mainly comprises an upper door switch, a middle door switch, a lower door switch, a range lamp, a turntable motor, a blower, a power distributing controller and a high voltage transformer. The proposal is characterized in that a first coil of the high voltage transformer is provided with a tap; the power controlling part in the power distributing controller is composed of a low power switch, a full power switch, a high power switch and three push-button switches; the tap of the first coil of the high voltage transformer is correspondingly connected with a power switch in the power distributing controller.

Description

A kind of micro-wave oven control device

The utility model relates to a kind of control device of household electrical appliance, especially a kind of micro-wave oven control device.

The micro-wave oven of machinery control in the prior art, generally be to adopt power dividing controller to control the working time and the power output of micro-wave oven, its power output is the dutycycle by the high-tension transformer input voltage break-make of control micro-wave oven, reach the power output of control micro-wave oven, the existing problem of this structure control device is, the required precision height of power dividing controller, so its price height, therefore, cause the cost of micro-wave oven also high, in addition, this control device, micro-wave oven is except that the work of total power retaining, and when other power output retaining work, the input voltage of high-tension transformer is with frequent break-make, this magnetron heater power supply that will cause micro-wave oven is frequent break-make also, so long-term work will cause the power output of micro-wave oven to descend, and the life-span of micro-wave oven also can shorten.

The purpose of this utility model is exactly at the existing in prior technology deficiency, makes the filament power supply of microwave oven magnetic uninterrupted and provide a kind of, so can prolong the micro-wave oven life-span, can reduce the micro-wave oven control device technical scheme of micro-wave oven cost again.

For clearly demonstrating the technical characterstic of this programme,, and, this programme is set forth in conjunction with its accompanying drawing below by a specific embodiment.

Description of drawings:

Fig. 1 is the control circuit figure of the utility model embodiment.

By accompanying drawing as can be seen, the micro-wave oven control device of this programme, mainly include K switch 1 to the doorstep, middle door switch K2 and Xiamen K switch 3, kitchen range lamp B, rotary tray motor Mz and blower fan Mf, and power dividing controller and high-tension transformer T, the characteristics of this programme are that the primary coil at described high-tension transformer T has tap 1,2,3, and the power control section branch in the described power dividing controller is made up of three key switches, be low power switch GK1, total power switch GK2 and high-power switchgear GK3, the tap 1 of high-tension transformer T primary coil connects with the end of low power switch GK1, the tap 2 of high-tension transformer T primary coil connects with the end of total power switch GK2, the tap 3 of high-tension transformer T primary coil connects with the end of high-power switchgear GK3, and low power switch GK1, the other end of total power switch GK2 and high-power switchgear GK3 connects the normal battle of Xiamen K switch 3 jointly.And the time control section in the described power dividing controller still keeps constant.

According to as can be known, be three key switches because power dividing controller adopts in this scheme, and high-tension transformer have the tap corresponding with key switch to the narration of such scheme.Because high-tension transformer has tap, this just makes the number of turn of high-tension transformer primary coil change, and this will influence the variation of secondary coil output high pressure, and this high pressure will be applied on the magnetron, so the power output of magnetron also just changes thereupon, thereby reach the purpose that changes the micro-wave oven power output.The variation of tap then realizes by three key switches in the power dividing controller on the high-tension transformer, this just can guarantee when power output changes, the filament power supply of magnetron does not need outage, so avoided of the infringement of the frequent break-make cause of magnetron heater power supply in the prior art to magnetron, prolonged the working life of magnetron, besides the price of key switch is extremely cheap again, and this has also reduced the cost of micro-wave oven.Certainly, original time control section remains and will keep in the power dividing controller.This shows that the utility model compared with prior art has substantive distinguishing features and progress, its implementation result also is conspicuous.

Claims

1. micro-wave oven control device, mainly include K switch 1 to the doorstep, middle door switch K2 and Xiamen K switch 3, kitchen range lamp B, rotary tray motor Mz and blower fan Mf, and power dividing controller and high-tension transformer T, it is characterized in that tap 1 being arranged at the primary coil of described high-tension transformer T, 2,3, and the power control section branch is made up of three key switches in the described power dividing controller, be low power switch GK1, total power switch GK2 and high-power switchgear GK3, the tap 1 of high-tension transformer T primary coil connects with the end of low power switch GK1, the tap 2 of high-tension transformer T primary coil connects with the end of total power switch GK2, the tap 3 of high-tension transformer T primary coil connects with the end of high-power switchgear GK3, and low power switch GK1, the other end of total power switch GK2 and high-power switchgear GK3 connects the normal battle of Xiamen K switch 3 jointly.