CN1955558A - Automatic control system for lighting of microwave oven - Google Patents
Automatic control system for lighting of microwave oven Download PDFInfo
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- CN1955558A CN1955558A CN 200510015729 CN200510015729A CN1955558A CN 1955558 A CN1955558 A CN 1955558A CN 200510015729 CN200510015729 CN 200510015729 CN 200510015729 A CN200510015729 A CN 200510015729A CN 1955558 A CN1955558 A CN 1955558A
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Abstract
An automatic control system for the lighting in microwave oven is composed of power connector, transformer, power supply circuit, control chip, crystal oscillator, buzzer circuit, master relay circuit, display circuit, lamp and its switch, and door controlled relay switch for the motor of rotary tray and lamp.
Description
Technical field
The present invention relates to a kind of micro-wave oven.Particularly relate to a kind ofly when micro-wave oven carries out work, can control the automatic control system for lighting of microwave oven of the opening and closing of micro-wave oven stove lamp voluntarily.
Background technology
Generally, micro-wave oven is that (per second is about 2,450MHz) is heating source, the intermolecular frictional heat that is taken place by the molecules align that confuses food and arrange the utensil of food with high frequency waves.
Fig. 1 is the decomposing schematic representation of the general structure of micro-wave oven; Fig. 2 is the control circuit schematic diagram of existing micro-wave oven stove lamp part.
As shown in Figure 1, existing micro-wave oven comprises: by front panel 11 and rear board 13 and the cooking cavity assembly 10 that constitutes; Cooking cavity 12 in the 10 inner sides formation of cooking cavity assembly; Be formed on cooking cavity assembly 10 inner opposite sides, be provided with the electric control chamber 14 of various electric components; Be arranged on the shell 20 in the outside of cooking cavity assembly 10.
The a plurality of intercommunicating pores of formation that are communicated with cooking cavity 12 inner spaces to the central part greatly of plate 13 in the back, in the back the back of plate 13 be provided with and rear board 13 between have the convection cell 40 in any space.
In the space that convection cell 40 is had, be provided with heater 41, and the convection fan 42 that makes the hot gas convection current in cooking cavity 12 that takes place from heater 41 is installed, and being equipped with in the back of convection cell 40 in order to drive convection fan 42, and the motor 43 that is connected with the axle of convection fan 42.
Be installed with the convection cell cover 50 of parcel convection cell 40 and motor 43 in the back on the plate 13, convection cell 40 and motor 43 are protected from the outside.
The back of convection cell cover 50 is formed with a plurality of air suction inlet 50a that can flow into air from the outside.
Comprise the magnetron 14a that generates microwave by installation on the electric control chamber 14, supply with high-tension high-tension transformer 14b to magnetron 14a, and the fan electromotor 14d of the blowing fan 14c of the various electric components of cooling electric control chamber 14 inside and driving blowing fan 14c.Fan electromotor 14d is fixedly mounted on the inner face of rear board 13-side, and around blowing fan 14c wind deflector is installed, thereby the guiding air is mobile.
At present, the duty of micro-wave oven stove lamp is that the stove lamp is bright when opening, and base plate electric machine is not worked.Door is closed, and the stove lamp is closed; After body of heater started, stove lamp and base plate electric machine were worked always and are finished until cooking.The user can not control the opening and closing of stove lamp voluntarily in this process, and when long-time cooking, the stove lamp is opened until cooking always and finished, and wastes electric energy greatly.As shown in Figure 2, the control circuit of existing micro-wave oven stove lamp part is that control chip A passes through control main relay circuit E, reaches the purpose that starts stove lamp and base plate electric machine simultaneously.
That is, existing micro-wave oven stove lamp is when opening the door, the main relay closure, and door switch is opened, the work of stove lamp, base plate electric machine is not worked.The back relay of closing the door is opened, and the stove lamp is also closed, stove lamp switch closure, and base plate electric machine is not worked yet.When the signal of beginning for a microwave, relay closes, stove lamp and base plate electric machine are worked simultaneously and are finished until cooking.So waste energy.
Summary of the invention
Technical problem to be solved by this invention is, provides a kind of when micro-wave oven carries out work, can control the automatic control system for lighting of microwave oven of the opening and closing of micro-wave oven stove lamp voluntarily.
The technical solution adopted in the present invention is: a kind of automatic control system for lighting of microwave oven, include the connector that links to each other with power supply, the transformer that links to each other with the output of connector, the power circuit that links to each other with the output of transformer, the control chip that links to each other with the output of power circuit, control chip also respectively with crystal oscillating circuit, the buzzer circuit, the input of main relay circuit is connected, the output of transformer also is connected with display circuit, the output of main relay circuit is connected with micro-wave oven stove lamp by connector, also be provided with an end and be connected, the relay switch that the other end is connected with micro-wave oven stove lamp and base plate electric machine with control chip.
Described relay switch is to be connected with control chip by diode D30 and triode, wherein, relay switch and diode D30 are connected in parallel, and the positive pole of diode D30 connects the colelctor electrode of triode, the base stage of triode connects control chip, the grounded emitter of triode.
One end of described micro-wave oven stove lamp and base plate electric machine is succeeded electric switch jointly, and the other end all connects power supply by overheat protector device and insurance.
Automatic control system for lighting of microwave oven of the present invention, by in circuit, setting up a relay, its relay is opened when opening the door, base plate electric machine does not turn round, and, can be implemented in when arranging the opening and closing of control stove lamp that can be voluntarily and needn't arrange by the time and finish back stove lamp and just can close by on control panel, increasing a button.When long-time cooking, can save electric energy like this, and can prevent components aging and cause open the door the time base plate electric machine idle running.
Description of drawings
Fig. 1 is the decomposing schematic representation of the general structure of micro-wave oven;
Fig. 2 is the control circuit schematic diagram of existing micro-wave oven stove lamp part;
Fig. 3 is the control circuit schematic diagram of micro-wave oven stove lamp part of the present invention.
Wherein:
A: control chip B: power circuit
C: display circuit D: crystal oscillating circuit
E: main relay circuit F: buzzer circuit
G: triode L: overheat protector device
M: base plate electric machine N: micro-wave oven stove lamp
P: insurance S: power supply
T: transformer K: door switch
J1: relay switch J2: relay switch
The specific embodiment
Below, be described with reference to the accompanying drawings automatic control system for lighting of microwave oven of the present invention.
Fig. 3 is the control circuit schematic diagram of micro-wave oven stove lamp part of the present invention.
As shown in Figure 3, automatic control system for lighting of microwave oven, include the connector W that links to each other with power supply S, the transformer T that links to each other with the output of connector W, the power circuit B that links to each other with the output of transformer T, the control chip A that links to each other with the output of power circuit B, control chip A also respectively with crystal oscillating circuit D, buzzer circuit F, the input of main relay circuit E is connected, the output of transformer T also is connected with display circuit C, the output of main relay circuit E is connected with micro-wave oven stove lamp N by connector W, it is characterized in that, also be provided with an end and be connected, the relay switch J2 that the other end is connected with micro-wave oven stove lamp N and base plate electric machine M with control chip A.
Described relay switch J2 is connected with control chip A by diode D30 and triode G, wherein, relay switch J2 and diode D30 are connected in parallel, and the positive pole of diode D30 connects the colelctor electrode of triode G, the base stage of triode G meets control chip A, the grounded emitter of triode G.
The end of described micro-wave oven stove lamp N and base plate electric machine M is succeeded electric switch J2 jointly, and the other end all meets power supply S by overheat protector device L and insurance P.
The present invention has saved door switch K by increasing a relay switch J2, and when oven door opening, control chip A provides a signal and makes relay switch J2 closure, stove lamp N work.Relay switch J1 opens, and base plate electric machine is not worked.When operation, relay switch J1, relay switch J2 are closed.The unlatching of stove lamp N and closure are only controlled by relay switch J2 like this.On control panel of microwave oven, increase a button that is connected with control chip A simultaneously, when the user wants to close stove lamp N in the cooking process, can come the folding of control relay switch J2, thereby control the opening and closing of stove lamp N by this button.
In an embodiment of the present invention.The model of control chip A is: S3C9498; The model of relay J 1, J2 is: 6920W2D010A; Transformer T model: 6170W2G016; The model of connector W is; 6630W5YA12D.
Claims (3)
1. automatic control system for lighting of microwave oven, include the connector (W) that links to each other with power supply (S), the transformer (T) that links to each other with the output of connector (W), the power circuit (B) that links to each other with the output of transformer (T), the control chip (A) that links to each other with the output of power circuit (B), control chip (A) also respectively with crystal oscillating circuit (D), buzzer circuit (F), the input of main relay circuit (E) is connected, the output of transformer (T) also is connected with display circuit (C), the output of main relay circuit (E) is connected with micro-wave oven stove lamp (N) by connector (W), it is characterized in that, also be provided with an end and be connected, the relay switch (J2) that the other end is connected with micro-wave oven stove lamp (N) and base plate electric machine (M) with control chip (A).
2. automatic control system for lighting of microwave oven according to claim 1, it is characterized in that, described relay switch (J2) is to be connected with control chip (A) by diode D30 and triode (Q31), wherein, relay switch (J2) is connected in parallel with diode D30, the positive pole of diode D30 connects the colelctor electrode of triode (Q31), and the base stage of triode (Q31) connects control chip (A), the grounded emitter of triode (Q31).
3. automatic control system for lighting of microwave oven according to claim 1; it is characterized in that; one end of described micro-wave oven stove lamp (N) and base plate electric machine (M) is succeeded electric switch (J2) jointly, and the other end all connects power supply (S) by overheat protector device (L) and insurance (P).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510015729 CN1955558A (en) | 2005-10-28 | 2005-10-28 | Automatic control system for lighting of microwave oven |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510015729 CN1955558A (en) | 2005-10-28 | 2005-10-28 | Automatic control system for lighting of microwave oven |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1955558A true CN1955558A (en) | 2007-05-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510015729 Pending CN1955558A (en) | 2005-10-28 | 2005-10-28 | Automatic control system for lighting of microwave oven |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1955558A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101995043A (en) * | 2009-08-21 | 2011-03-30 | 上海松下微波炉有限公司 | Microwave oven control circuit and control method thereof |
-
2005
- 2005-10-28 CN CN 200510015729 patent/CN1955558A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101995043A (en) * | 2009-08-21 | 2011-03-30 | 上海松下微波炉有限公司 | Microwave oven control circuit and control method thereof |
| CN101995043B (en) * | 2009-08-21 | 2014-05-28 | 上海松下微波炉有限公司 | Microwave oven control circuit and control method thereof |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |