CN2750216Y

CN2750216Y - Microwave oven with adjustable power

Info

Publication number: CN2750216Y
Application number: CN 200420102032
Authority: CN
Inventors: 梁春华; 刘辉
Original assignee: MEIDI DAILY ELECTRICAL APPLIANCES CO Ltd FOSHAN CITY
Current assignee: MEIDI DAILY ELECTRICAL APPLIANCES CO Ltd FOSHAN CITY
Priority date: 2004-12-06
Filing date: 2004-12-06
Publication date: 2006-01-04
Anticipated expiration: 2014-12-06

Abstract

The utility model relates to a microwave oven with adjustable power, which includes an outer shell (1), an oven port (2), a transformer (3), a magnetron (4) and a capacitive circuit with high voltage (5). The secondary coil T1 of the transformer (3) is connected with the cathode and the anode of the magnetron (4). The first coil T3 and the secondary coil T2 of the transformer (3) are respectively provided with a plurality of taps n3, n2. The control device includes a plurality of relays jn and a plurality of capacitances cn. The a plurality of relays jn are connected between the every tap n3 of the transformer's (3) first coil T3 and the power supply vi. A plurality of concatenating circuits are connected in parallel that are composed of the capacitances cn and the relays jn. One end of the connecting circuit in parallel is connected with the every tap n2 of the transformer's (3) secondary coil T2 via the a plurality of relays jn. The other end is connected with the anode of a diode D with high voltage and the anode of the magnetron (4). The cathode of the diode D with high voltage is on ground. The utility model can gain a plurality of homogeneous and continuous waves with different powers. The utility model can satisfy the requirement of multi-power for clients. And it improves the effect of cooking.

Description

A kind of micro-wave oven of power-adjustable

1, technical field:

The utility model is a kind of micro-wave oven of power-adjustable, belongs to the renovation technique of micro-wave oven.

2, background technology:

Conventional microwave oven is by the output of lc circuit control microwave, and its power output can only be a constant, and exactly its power is not to regulate, but come out by the on/off time conversion of microwave emission.For example, high fire is the micro-wave oven of 900W, and when setting use moderate heat (being assumed to be 600W), its duty is 2/3 time output 900W power, and 1/3 time stops launched microwave.Replace the food that heats in the firepower in this on/off, be easy to generate some position over-heating of food and other position underheats, the nutrition leak and the mouthfeel that cause being heated food are not good, can't reach the result of use of customer requirements.

3, summary of the invention:

The purpose of this utility model is to overcome above-mentioned shortcoming and a kind of real continuously adjustable even firepower of having realized is provided, and makes food be in the power-adjustable micro-wave oven of the even firepower heated condition of continuous appropriateness all the time.The utility model has farthest kept the nutritional labeling of food, and mouthfeel is better, can satisfy user's instructions for use.

Structural representation of the present utility model as shown in drawings, include shell (1), fire door (2), transformer (3), magnetron (4), high-voltage capacitance circuit (5), transformer (3) wherein, magnetron (4), high-voltage capacitance circuit (5) all is installed in the shell (1), the moon of the secondary coil T1 of transformer (3) and magnetron (4), anode connects, the primary coil T3 of transformer (3) and secondary coil T2 are respectively equipped with if a tap n3, n2, control device includes some relay J n, some capacitor C n, wherein some relay J n are connected between each tap n3 and power supply vi of transformer (3) primary coil T3, somely be connected in series the loop and connect by what capacitor C n and relay J n formed, and and an end that takes back the road is connected with each tap n2 of transformer (3) secondary coil T2 by some relay J n respectively, the other end is connected the minus earth of high-voltage diode D with the anode of high-voltage diode D and the anode of magnetron (4).

The tap n3 of above-mentioned primary coil T3 and the tap n2 of secondary coil T2 are respectively equipped with 2, control device includes relay J 1, J2, J3, J4, J5, J6, capacitor C 1, C2, wherein relay J 1, J2 is connected in parallel on 2 tap n3 of transformer (3) primary coil T3, capacitor C 1 is connected in series with relay J 5, capacitor C 2 is connected in series with relay J 6, this two sequential circuit also connects, and the one end is respectively by relay J 3, J4 is connected with 2 tap n2 of transformer (3) secondary coil T2, the other end is connected the minus earth of high-voltage diode D with the anode of high-voltage diode D and the anode of magnetron (4).

Above-mentioned that form by capacitor C 1, C2, relay J 5, J6 and take back between road and relay J 3, the J4 and also be connected with high voltage safety tube Fh.

Above-mentioned control device is provided with the button of control relay J1, J2, J3, J4, J5, J6 break-make.

The utility model is drawn tap to the high-tension transformer primary and secondary in the micro-wave oven, and the shunt capacitance of connection relay and coupling, break-make mode by control relay, form the high-voltage capacitance of different capacitances, make microwave oven magnetic anode voltage difference, and then make the magnetron power output controlled, make micro-wave oven export the different even continuous wave of a plurality of power, both satisfied the requirement of a plurality of power shelves of client, improved the effect of cooking again widely, the utility model has been realized real continuously adjustable even firepower, make food be in the even firepower heated condition of continuous appropriateness all the time, the nutritional labeling that has farthest kept food, and mouthfeel is better, can satisfy user's instructions for use.The utility model can be suitable for various cooking requirements, is that a kind of design is ingenious, convenient and practical power-adjustable micro-wave oven.

4, description of drawings:

Fig. 1 is the utility model schematic perspective view;

Novel middle transformer (3), magnetron (4) and high-voltage capacitance circuit (5) are installed in schematic diagram on the shell (1) to Fig. 2 for this reality has;

Fig. 3 is control principle figure of the present utility model;

Fig. 4 is the circuit theory diagrams of prior art.

5, the specific embodiment:

Embodiment:

Structural representation of the present utility model such as Fig. 1, shown in 2, control principle figure as shown in Figure 3, include shell (1), fire door (2), transformer (3), magnetron (4), high-voltage capacitance circuit (5), transformer (3) wherein, magnetron (4), high-voltage capacitance circuit (5) all is installed in the shell (1), the moon of the secondary coil T1 of transformer (3) and magnetron (4), anode connects, the primary coil T3 of transformer (3) and secondary coil T2 are respectively equipped with if a tap n3, n2, control device includes some relay J n, some capacitor C n, wherein some relay J n are connected between each tap n3 and power supply vi of transformer (3) primary coil T3, somely be connected in series the loop and connect by what capacitor C n and relay J n formed, and and an end that takes back the road is connected with each tap n2 of transformer (3) secondary coil T2 by some relay J n respectively, the other end is connected the minus earth of high-voltage diode D with the anode of high-voltage diode D and the anode of magnetron (4).Wherein high-voltage capacitance circuit (5) is same as the prior art.

In the present embodiment, the tap n3 of above-mentioned primary coil T3 and the tap n2 of secondary coil T2 are respectively equipped with 2, control device includes relay J 1, J2, J3, J4, J5, J6, capacitor C 1, C2, wherein relay J 1, J2 is connected in parallel on 2 tap n3 of transformer (3) primary coil T3, capacitor C 1 is connected in series with relay J 5, capacitor C 2 is connected in series with relay J 6, this two sequential circuit also connects, and the one end is respectively by relay J 3, J4 is connected with 2 tap n2 of transformer (3) secondary coil T2, the other end is connected the minus earth of high-voltage diode D with the anode of high-voltage diode D and the anode of magnetron (4).

In order to protect magnetron effectively, avoid it to burn out because of overtension, above-mentioned that form by capacitor C 1, C2, relay J 5, J6 and take back between road and relay J 3, the J4 and also be connected with high voltage safety tube Fh.

In order to control conveniently, above-mentioned control device is provided with the button of control relay J1, J2, J3, J4, J5, J6 break-make.

When the utility model uses, for example, a maximum power output is the micro-wave oven of 900W, by two elementary taps of high-tension transformer, secondary two taps and connect two high-voltage capacitances controlling, the on/off mode of relay by the control series connection with it changes the high-tension transformer primary and secondary and sips number and capacitance, thereby changed the output voltage size of coupling, its concrete condition such as following table:

The tabulation of relay control tap connected mode

Sequence number	Power output	J1	J2	J3	J4	J5	J6
Sequence number	Power output	J1	J2	J3	J4	J5	J6	1	900W	●	○	●	○	●	●
2	800W	●	○	○	●	●	●	1	900W	●	○	●	○	●	●
2	800W	●	○	○	●	●	●	3	700W	●	○	●	○	●	○
4	600W	●	○	○	●	●	○	3	700W	●	○	●	○	●	○
4	600W	●	○	○	●	●	○	5	500W	○	●	●	○	●	●
6	400W	○	●	○	●	●	●	5	500W	○	●	●	○	●	●
6	400W	○	●	○	●	●	●	7	300W	○	●	●	○	●	○
8	200W	○	●	○	●	●	○	7	300W	○	●	●	○	●	○
8	200W	○	●	○	●	●	○	9	100W	○	●	○	●	○	●

(● represent this moment relay to be in closed condition, zero represent at this moment, and relay is in off-state)

By the break-make mode of control panel control relay, form the high-voltage capacitance of different capacitances on the micro-wave oven, make microwave oven magnetic anode voltage difference, and then make the magnetron power output controlled, and be continuous microwave output.

Claims

1, a kind of power-adjustable micro-wave oven, include shell (1), fire door (2), transformer (3), magnetron (4), high-voltage capacitance circuit (5), transformer (3) wherein, magnetron (4), high-voltage capacitance circuit (5) all is installed in the shell (1), the moon of the secondary coil T1 of transformer (3) and magnetron (4), anode connects, the primary coil T3 and the secondary coil T2 that it is characterized in that transformer (3) are respectively equipped with as if a tap n3, n2, control device includes some relay J n, some capacitor C n, wherein some relay J n are connected between each tap n3 and power supply vi of transformer (3) primary coil T3, somely be connected in series the loop and connect by what capacitor C n and relay J n formed, and and an end that takes back the road is connected with each tap n2 of transformer (3) secondary coil T2 by some relay J n respectively, the other end is connected the minus earth of high-voltage diode D with the anode of high-voltage diode D and the anode of magnetron (4).

2, power-adjustable micro-wave oven according to claim 1, it is characterized in that the tap n3 of above-mentioned primary coil T3 and the tap of secondary coil T2 are respectively equipped with 2, control device includes relay J 1, J2, J3, J4, J5, J6, capacitor C 1, C2, wherein relay J 1, J2 is connected in parallel on 2 tap n3 of transformer (3) primary coil T3, capacitor C 1 is connected in series with relay J 5, capacitor C 2 is connected in series with relay J 6, this two sequential circuit also connects, and the one end is respectively by relay J 3, J4 is connected with 2 tap n2 of transformer (3) secondary coil T2, the other end is connected the minus earth of high-voltage diode D with the anode of high-voltage diode D and the anode of magnetron (4).

3, power-adjustable micro-wave oven according to claim 2 is characterized in that above-mentioned that be made up of capacitor C 1, C2, relay J 5, J6 and take back between road and relay J 3, the J4 and also be connected with high voltage safety tube Fh.

4, power-adjustable micro-wave oven according to claim 3 is characterized in that above-mentioned control device is provided with the button of control relay J1, J2, J3, J4, J5, J6 break-make.