CN1704663A

CN1704663A - Combined regulating and controlling device and method for microwave oven

Info

Publication number: CN1704663A
Application number: CNA2004100193458A
Authority: CN
Inventors: 金圭英
Original assignee: LG Electronics Tianjin Appliances Co Ltd
Current assignee: LG Electronics Tianjin Appliances Co Ltd
Priority date: 2004-05-27
Filing date: 2004-05-27
Publication date: 2005-12-07
Anticipated expiration: 2024-05-27
Also published as: CN100487319C

Abstract

This invention discloses a regulating and controlling device of microwave, in addition to a regular method. In the microwave oven it has a magtron as heating source, a heater and a circulating fan making the heated air circulating in the cooking chamber; in the circulating motor which is used for driving circulating motor it leads out T1, T2, T3 terminals, connecting the T2 terminal, T3 terminal to the power source input end of the heater, wherein the voltage between the T2 and T3 terminal is smaller than the set voltage. In the heating mode, applying the set voltage in the heater and operating the heater only; in the association mode, cutting off the set voltage in the heater, applying the voltage between T2 and T3 terminal, making the heater and magtron working together. In the association mode, the heater and the magtron will drive together, by which can cook quickly and evenly.

Description

The combined regulating device and the regulate and control method thereof of micro-wave oven

Technical field

The present invention relates to a kind of micro-wave oven that possesses heater, particularly relate to a kind of combined regulating device and regulate and control method thereof that utilizes united mode to realize the micro-wave oven of flash-cook.

Background technology

Recently, as home-use cooker, what mainly use is gas burner, Gas oven, micro-wave oven, microwave oven etc.

Wherein, micro-wave oven is that the microwave that produces with built-in magnetron (MGT) vibration is the cooking machine of the food of main heating source cooking chamber interior.

In addition, exploitation recently, the also promising of listing provide multiple heated condition and the micro-wave oven of internal heater.

The micro-wave oven of internal heater, as the heat of the heater generation of heating source and the microwave that magnetron produces, the heat food aspect is useful at selective use.

Along with the exploitation of the micro-wave oven that possesses magnetron and heater, not only provide multiple heated condition, and under multiple heated condition, the food species that provides for the user is increasing also.

Below, with reference to Fig. 1, the general structure and the action thereof of the micro-wave oven that possesses heater are described.

General micro-wave oven consists of the following components, as heating source magnetron 10 that produces microwave and the heater 20 that produces heat are arranged, for on magnetron 10, applying the high-tension transformer 11 of high pressure, control is for first relay (RY1) 12 of power supply on high-tension transformer 11, control is for second relay (RY2) 21 of power supply on heater 20, the thermal cycle that heater 20 takes place for the rotary tray motor 30 of rotary turnplate (diagram omit), running is in the circulation motor 40 of the circulating fan of cooking room inside.

As shown in the figure, magnetron 10 and heater 20 as heating source with rotary tray motor, are parallel to power supply AC.

Magnetron 10 is arranged in the cooking chamber for microwave oven, is the part that microwave takes place, and heater 20 also is arranged in the cooking room, is the part that heat is provided for food.

Rotary tray motor 30, the hot gas that produces for microwave or heater 20 with magnetron 10 generations evenly offers food, and rotation places the rotating disk of cooking room.

Circulation motor 40, for hot gas cycle that heater 20 is produced in cooking room inside, the cycle of rotation fan.

Be connected and be first relay 12 and second relay 21 that is connected on the heater 20 on the high-tension transformer 11 that adds high pressure to magnetron 10, along with the actuating signal driving of systems control division (diagram is omitted), control is for the power supply on magnetron 10 and heater 20.

Microwave oven structure, the existing joint dysfunction that magnetron 10 and heater 20 are operated simultaneously has the heating function that only operates heater 20 again, and the user can be according to the food selection difference in functionality.

Under united mode, systems control division is to control first relay 12 and second relay 21 turn round magnetron 10 and heater 20 and rotary tray motor 30; Under heating mode, heater 20 and rotary tray motor 30 only turn round.

As shown in Figure 2, micro-wave oven under united mode, first relay 12 and second relay 21, its signal is a repellency on/off form, can make magnetron 10 and heater 20 intersect running.Be that the user is when selecting united mode, first relay 12 and second relay 21 are regulated to mutual repulsion type, under the state that disconnects heater 20, connect magnetron 10 in the certain hour, then under the state that disconnects magnetron 10, connect heater 20 in the certain hour.With magnetron 10 and heater 20 intersection runnings, move united mode by pattern.

Running is during united mode, and magnetron 10 and heater 20 are intersected running, is to have considered the permission upper current limit (being generally 16A) set on the micro-wave oven.

Usually, the consumption electric current of magnetron 10 is about 7A, and the consumption electric current of heater 20 is about 13A, if operate magnetron 10 and heater 20 simultaneously, its total current reaches 20A, surpasses to allow upper current limit.

Therefore, micro-wave oven is when the running united mode, and intersection operates magnetron 10 and heater 20.

But there is following problem in the micro-wave oven united mode of prior art.

The first, under united mode, there is the limit in the mode of heating that magnetron must disconnect when adopt connecting heater to the variable output quantity of magnetron.

The second since in the micro-wave oven united mode with the restriction of the permission electric current set, magnetron and heater can't operate simultaneously, can not realize flash-cook, have a difficult problem shortening on the cooking time.

Summary of the invention

Technical problem to be solved by this invention is to provide a kind of magnetron and heater that can drive simultaneously as heating source, operation united mode, the combined regulating device and the regulate and control method thereof of the micro-wave oven of realization flash-cook.

The technical solution adopted in the present invention is: a kind of combined regulating device of micro-wave oven, the hot gas cycle that takes place as the magnetron of heating source and heater, with heater is arranged in the micro-wave oven of the circulating fan of cooking room inside possessing, on for the circulation motor that drives circulating fan, draw T1, T2, T3 terminal, T2 terminal on the circulation motor is connected with the power input of heater with the T3 terminal, under heating mode, on heater, apply the voltage of having set and only operate heater; Under united mode, the setting voltage on the heater is cut off, apply the voltage between T2, T3 terminal, heater and magnetron are operated simultaneously.Voltage between described T2, T3 terminal is less than setting voltage.

A kind of regulate and control method of combined regulating device of micro-wave oven is possessing on the micro-wave oven of magnetron and heater as heating source, comprises by under heating mode, applies first setting voltage to heater, only operates the stage of heater; Under united mode, cut off first setting voltage on the heater, apply second setting voltage less than first setting voltage, the stage that heater and magnetron are operated is simultaneously formed.

As mentioned above, the combined regulating device of micro-wave oven of the present invention and regulate and control method thereof have following effect.

The first, under the micro-wave oven united mode, reduction provides voltage to heater, makes it to drive simultaneously with magnetron, can realize flash-cook by united mode.

The second, under united mode, drive magnetron and heater simultaneously, the effect that can evenly be heated.

Description of drawings

Fig. 1 is the module map that possesses the general structure of micro-wave oven of heater;

Fig. 2 is magnetron and a heater-driven information oscillogram under the existing united mode;

Fig. 3 is the schematic diagram of circulation motor tab terminal in the micro-wave oven of the present invention;

Fig. 4 is each voltage between terminals schematic diagram shown in Fig. 3;

Fig. 5 is a microwave oven module map of the present invention;

Fig. 6 a is a heater-driven information waveform schematic diagram in the heater mode of the present invention;

Fig. 6 b is the activation bit waveform schematic diagram of magnetron and heater in the united mode of the present invention.

Wherein:

100: magnetron 110: high-tension transformer

Relay 200 in 120: the first: heater

Relay 300 in 210: the second: rotary tray motor

400: circulation motor

The specific embodiment

Followingly the combined regulating device of micro-wave oven of the present invention and the embodiment of regulate and control method thereof are elaborated with reference to accompanying drawing.

Fig. 3 is the schematic diagram of circulation motor tab terminal in the micro-wave oven of the present invention, and Fig. 4 is each voltage between terminals schematic diagram shown in Fig. 3; Fig. 5 is a microwave oven module map of the present invention; Fig. 6 a is a heater-driven information waveform schematic diagram in the heater mode of the present invention; Fig. 6 b is the activation bit waveform schematic diagram of magnetron and heater in the united mode of the present invention.

Usually, comprise the micro-wave oven of heater 200, hot gas cycle that heater is produced is set in cooking room one side in the circulation motor (diagram is omitted) of cooking room inside.

The present invention draws T1, T2, T3 terminal as shown in Figure 3 in the circulation motor 400 for the running circulating fan.

At this moment, as shown in Figure 4, the voltage between the T1 of circulation motor 400, T3 terminal is 120V, and the voltage between T2 and T3 terminal is 90V.

With the T2 of circulation motor 400, the power input that the T3 terminal is connected to heater 200.

As shown in Figure 5, form micro-wave oven of the present invention, comprise by magnetron 100 and heater 200 as heating source, apply the high-tension transformer 110 of required high pressure for magnetron 100, first relay 120 of control high-tension transformer power supply, second relay 120 of control heater power supply, rotation is formed the hot gas cycle that heater 200 produces in the circulation motor 400 of the circulating fan of cooking room inside.

Feature of the present invention is, the T2 of circulation motor 400 is connected with the power input of T3 terminal with heater 200, during the operation united mode,, heater and magnetron 100 are driven simultaneously applying on the heater 200 less than power supply unit (omitting diagram) T2 of voltage and the voltage between the T3 terminal.

At first, systems control division during the operation heating mode (omitting diagram) will disconnect first relay 120, connect second relay 210 simultaneously.

After second relay 210 connected, heater 200 provided the voltage of setting by power supply unit, together drives with rotary tray motor 300 and circulation motor 400.

At this moment, the power supply unit voltage that offers heater 200 is 120V, and heater 200 is according to the power supply unit voltage signal shown in Fig. 6 a, and ON/OFF moves heating mode repeatedly.

When the operation united mode, systems control division connects first relay 120, simultaneously second relay 210 is disconnected.

At this moment, along with the disconnection of second relay 210, power supply unit voltage also is cut off, and heater 200 provides certain voltage by the T2 and the T3 terminal of the circulation motor 400 that is connected with heater 200.

Heater 200 provides certain voltage by circulation motor, operates simultaneously with magnetron 100.

Shown in Fig. 6 a, heater 200 is driven with magnetron 100 simultaneously by the voltage (90V) that provides between T2 and T3 terminal less than power supply unit voltage (120v) under the united mode.

At this moment, systems control division will be controlled the voltage (90V) that provides certain continuously, arrive design temperature (A) until heater 200.

The present invention is, during the operation heating mode, connects second relay 210, the voltage 120V of power supply unit is provided for heater 200; Operation is during united mode, disconnects second relay 210 and cuts off the electricity supply behind the voltage (120V) of portion, and the voltage (90V) between terminal T2, the T3 of circulation motor 400 is offered heater 200, makes it to drive simultaneously with magnetron 100.

By above description, colleagues know, can carry out various change and modification in the scope that does not break away from the technology of the present invention thought.Therefore, technical scope of the present invention should should not decided according to the claim scope by the content constraints of being put down in writing on the example.

Claims

1. the combined regulating device of a micro-wave oven, in the hot gas cycle that possesses the magnetron (100) that has as heating source and heater (200), heater (200) is taken place in the micro-wave oven of the circulating fan of cooking room inside, it is characterized in that, on for the circulation motor (400) that drives circulating fan, draw T1, T2, T3 terminal, T2 terminal on the circulation motor (400) is connected with the power input of T3 terminal with heater (200), under heating mode, on heater (200), apply the voltage of having set and only operate heater; Under united mode, the setting voltage on the heater (200) is cut off, apply the voltage between T2, T3 terminal, heater (200) and magnetron (100) are operated simultaneously.

2. the combined regulating device of micro-wave oven according to claim 1 is characterized in that, the voltage between described T2, T3 terminal is less than setting voltage.

3. the regulate and control method of the combined regulating device of a micro-wave oven, on the micro-wave oven that possesses magnetron (100) and heater (200) as heating source, it is characterized in that, comprise by under heating mode, apply first setting voltage for heater (200), only operate the stage of heater (200); Under united mode, cut off first setting voltage on the heater (200), apply second setting voltage less than first setting voltage, the stage that heater (200) and magnetron (100) are operated is simultaneously formed.