CN102023662B - A kind of control circuit of heating appliances and adopt the heating appliances of this control circuit - Google Patents

A kind of control circuit of heating appliances and adopt the heating appliances of this control circuit Download PDF

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Publication number
CN102023662B
CN102023662B CN201010564866.7A CN201010564866A CN102023662B CN 102023662 B CN102023662 B CN 102023662B CN 201010564866 A CN201010564866 A CN 201010564866A CN 102023662 B CN102023662 B CN 102023662B
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heating unit
module
heating
control
control module
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CN102023662A (en
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王晓华
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Midea Group Co Ltd
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Midea Group Co Ltd
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Abstract

The present invention relates to control circuit and adopt the heating appliances of this control circuit, this heating appliances has multiple heating unit, control circuit mainly comprises control module and performance element, control module comprises central processing element module, the second heating unit work indicating module and the second heating unit temperature detecting module, and performance element comprises the relay control module, the first heating unit control module, the first heating unit door switch detection module, the second heating unit heating control module and the second heating unit door switch detection module that are made up of integrated package; Wherein the first heating unit of the first heating unit control module, the special control heater tool of first heating unit door switch detection module two parts, the second heating unit heating control module, the second heating unit door switch detection module, the second heating unit work indicating module and the second heating unit temperature detecting module four part controls the second heating unit specially.The present invention designs more humane, practical.

Description

A kind of control circuit of heating appliances and adopt the heating appliances of this control circuit
Technical field
The present invention relates to a kind of control circuit of heating appliances and adopt the heating appliances of this control circuit
Background technology
At present, the conventional micro-wave oven with baking function, only have a heating chamber, its barbecue mode many employings heat-generating pipe is heated food by heat radiation mode, but it exists in cooking chamber the shortcoming heated up compared with the temperature difference is large, the efficiency of heating surface is low, barbecue effect is not satisfactory in slow, cooking chamber.For this situation, some manufacturer has done improvement, develops hot wind convection type grill microwave oven, is improved the temperature distribution state in cooking chamber by convection current, improve barbecue effect, but there is the shortcomings such as complex structure, control circui is complicated, cost of manufacture is higher, efficiency utilization factor is low in it.For this reason, people are at the barbecue microwave oven that constantly research and development new construction is simple, burning is effective.On July 1st, 2009, the CN101469875A Chinese utility model patent of bulletin disclosed a kind of micro-wave oven with independent baking box, this micro-wave oven adopts the barbecue structure of drawer type, baking box is separated with cooking cavity, can arrange selectively according to the shape of food or cooking method, and because of this free-standing baking box small volume, the efficiency of heating surface is higher, can carry out rapid barbecue to food, barbecue effect is better, thus saves the energy.But existing barbecue microwave oven control circuit all adopts single stove door switch testing circuit, inapplicable to novel two-door barbecue microwave oven.
Summary of the invention
The problem to be solved in the present invention is to provide a kind of control circuit that can draw the different heating unit of heating appliances respectively, and the present invention also provides the heating appliances adopting this control circuit
For solving the problems of the technologies described above, the first technical scheme of the present invention is:
A kind of control circuit of heating appliances, mainly comprise control module and performance element, described control module comprises central processing element module, the second heating unit work indicating module of heating appliances and the second heating unit temperature detecting module, described performance element comprise be made up of integrated package relay control module, the first heating unit control module of heating appliances, the first heating unit door switch detection module, heating appliances the second heating unit heating control module and the second heating unit door switch detection module; Described second heating unit work indicating module and the second heating unit temperature detecting module, relay control module first heating unit door switch detection module and the second heating unit door switch detection module are all electrically connected with central processing element module, described first heating unit control module second heating unit heating control module and relay control module.
Further, described central processing element module is single-chip microcomputer.
Second technical scheme of the present invention is:
Adopt the heating appliances of above-mentioned control circuit, at least comprise the first heating unit and the second heating unit that are electrically connected with control circuit, described first heating unit and the second heating unit have separately independently door body; First heating unit door switch detection module of described control circuit and the first heating unit control module control the work of the first heating unit, and the second heating unit work indicating module of described control circuit, the second heating unit temperature detecting module, the second heating unit heating control module and the second heating unit door switch detection module control the work of the second heating unit.
Further, described first heating unit is microwave heating unit, and described second heating unit is barbecue heating unit.
Further, described first heating unit and the second heating unit are for place up and down.
The present invention relative to the beneficial effect of prior art is:
Heating appliances of the present invention has multiple heating unit, different control circuits is adopted to control the different heating unit of a same heating appliances, the door body correspondence of the heating chamber of each heating unit is provided with door switch testing circuit, be user-friendly to, meet consumers' demand, to the more space of user and selection, design hommization more, practical.
Accompanying drawing explanation
Fig. 1 is the surface structure schematic diagram of the heating appliances adopting control circuit of the present invention;
Fig. 2 is the theory diagram of control circuit of the present invention;
Fig. 3 is the control module circuit diagram of control circuit preferred embodiment of the present invention;
Fig. 4 is the performance element circuit diagram of control circuit preferred embodiment of the present invention
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation.
With reference to Fig. 1, heating appliances of the present invention comprises the first heating unit 11 and the second heating unit 12, first heating unit 11 is superposed micro-wave oven, and the second heating unit 12 is for being positioned at the barbecue heating furnace of bottom, and micro-wave oven and oven have separately independently fire door.
In Fig. 2, control circuit mainly comprises control module 10 and performance element 20, control module 10 comprises control module 10 and performance element 20, control module 10 comprises central processing element module 1, second heating unit work indicating module 3 and the second heating unit temperature detecting module 4, performance element 20 comprise be made up of integrated package relay control module 6, heating appliances the first heating unit control module 5, first heating unit door switch detection module 7, second heating unit heating control module 8 and the second heating unit door switch detection module 9; Wherein the second heating unit work indicating module 3 and the second heating unit temperature detecting module 4, relay control module 6, first heating unit door switch detection module 7 and the second heating unit door switch detection module 9 are all electrically connected with central processing element module 1, and the first heating unit control module 5 and the second heating unit heating control module 8 are electrically connected with relay control module 6.
Second heating unit work indicating module 3 and the second heating unit temperature detecting module 4 are exclusively used in the temperature detection of oven work instruction and oven respectively, and central processing element module 1 is exclusively used in heating control and the switch detection of oven respectively by the second heating unit heating control module 8 and the second heating unit door switch detection module 9; Central processing element module 1 is detected by the switch of control and door of microwave oven that the first heating unit control module 5, first heating unit door switch detection module 7 is exclusively used in micro-wave oven respectively.
As Fig. 3, central processing element module 1 adopts single-chip microcomputer IC2, model is S3F9488-QFP, crystal oscillator frequency is 4MHZ, the pin 39 of single-chip microcomputer IC2 is connected with resistance R49, control the work indication LED lamp LED1 of special oven, when this lamp is bright, represent that special oven is adding to hanker, the pin 19 of single-chip microcomputer IC2 is connected with R96, be used for detecting the cavity temperature of special oven, CON1 connects thermistor, this thermistor is placed in the special oven in bottom of complete machine, be used for responding to the temperature in furnace chamber, the pin 16 of single-chip microcomputer IC2 is connected with R16, be used for controlling the logical of triode TR7, disconnected, when single-chip microcomputer IC2 exports high level toward the 16th pin P0.5, triode TR7 disconnects, the thermistor be connected on CON1 is connected with R14, when single-chip microcomputer IC2 is toward the 16th pin P0.5 output low level, triode TR7 conducting, the thermistor be connected on CON1 is connected with R14, R15, and the resistance because of R14 is greater than the resistance of R15, so can realize the accurate control of high and low temperature.
As Fig. 4, the circuit diagram of performance element, the control circuit that relay control module 6 is made up of integrated IC3, the control circuit that all power components consist of integrated IC3 single-chip microcomputer IC2 controls, and the top micro-wave oven part of heating appliances complete machine is controlled mainly through first heating unit control module 5, first heating unit door switch detection module 7 two parts specially by single-chip microcomputer IC2.The special oven part in bottom of complete machine is controlled mainly through the second heating unit heating control module 8, second heating unit door switch detection module 9, second heating unit work indicating module 3 and the second heating unit temperature detecting module 4 four part specially by single-chip microcomputer IC2.
When user starts the special oven work of complete machine bottom, single-chip microcomputer IC2 exports a noble potential to the 26th pin P1.7, this noble potential can control pin 10 output low level by integrated chip IC3, if DOOR2 is closed, the coil of relay R LY4 just has the pressure drop an of+12V, the contact of relay R LY4 will close, and at this moment the L of civil power is connected to one end of HEAT2, and the other end because of HEAT2 is connected on the N of civil power.The pressure drop of heat-generating pipe two ends is about 220VAC, thus achieves heating function, and in like manner, heat to stop, single-chip microcomputer IC2 exports an electronegative potential to the 26th pin P1.7.When being heated to the design temperature of selected menu, the thermistor that CON1 connects will change to corresponding resistance value, and the 19th pin of single-chip microcomputer IC2 will detect this value, thus control the 26th pin P1.7 is that low level is to disconnect relay R LY4, HEAT2 stops heating, after HEAT2 stops heating a period of time, temperature in furnace chamber can decline again, when dropping to uniform temperature, the thermistor that CON1 connects can change to another value again, 19th pin of single-chip microcomputer IC2 can detect this value again, and export a noble potential to the 26th pin P1.7, make relay R LY4 action, control HEAT2 continues heating, circulation like this, temperature is controlled to roast at the optimum fired temperature of user-selected menu always, after barbecue completes, single-chip microcomputer IC2 exports an electronegative potential to the 26th pin P1.7, heating is stopped by Control HEAT2, and export high level to pin 39, LEDl is extinguished, instruction barbecue end-of-job.
When the oven door opening of the special oven in bottom of complete machine, DOOR2 disconnects, and relay R LY4 can not obtain+12V again and conduct, and HEAT2 can not generate heat again, the safety in use is brought to user, meanwhile, when DOOR2 disconnects, triode TR90 disconnects, the collector C of triode TR90 is high level, the 41st pin P4.6 of single-chip microcomputer IC2 will detect the change of this level, and output low level is to the 26th pin P1.7, and further pilot relay RLY4 disconnects.In like manner, when the fire door of the special oven in bottom of complete machine is shut, DOOR2 conducting ,+12V power supply is added to resistance R93 by D90, then the base stage B of triode TR90 is added to, triode TR90 conducting, the collector C level of triode TR90 is low, and single-chip microcomputer IC2 just can detect this low level by the 41st pin P4.6, simultaneously, relay R LY4 has also received power supply+12V, and relay by control action, can carry out control HEAT2 and heat.

Claims (5)

1. the control circuit of a heating appliances, it is characterized in that: mainly comprise control module (10) and performance element (20), described control module (10) comprises central processing element module (1), second heating unit work indicating module (3) of heating appliances and the second heating unit temperature detecting module (4), described performance element (20) comprises the relay control module (6) be made up of integrated package, first heating unit control module (5) of heating appliances, first heating unit door switch detection module (7), second heating unit heating control module (8) and the second heating unit door switch detection module (9) of heating appliances, described second heating unit work indicating module (3), the second heating unit temperature detecting module (4), relay control module (6), the first heating unit door switch detection module (7) and the second heating unit door switch detection module (9) are all electrically connected with central processing element module (1), and described first heating unit control module (5) second heating unit heating control module (8) is electrically connected with relay control module (6).
2. the control circuit of heating appliances according to claim 1, is characterized in that: described central processing element module (1) is single-chip microcomputer (IC2).
3. one kind adopts the heating appliances of control circuit according to claim 1, it is characterized in that: this heating appliances at least comprises the first heating unit (11) and the second heating unit (12) that are electrically connected with control circuit, described first heating unit (11) and the second heating unit (12) have separately independently door body; First heating unit door switch detection module (7) of described control circuit and the first heating unit control module (5) control the work of the first heating unit (11), and the second heating unit work indicating module (3) of described control circuit, the second heating unit temperature detecting module (4), the second heating unit heating control module (8) and the second heating unit door switch detection module (9) control the work of the second heating unit (12).
4. heating appliances according to claim 3, is characterized in that: described first heating unit (11) is microwave heating unit, and described second heating unit (12) is barbecue heating unit.
5. the heating appliances according to claim 3 or 4, is characterized in that: described first heating unit (11) and the second heating unit (12) are for place up and down.
CN201010564866.7A 2010-11-25 2010-11-25 A kind of control circuit of heating appliances and adopt the heating appliances of this control circuit Active CN102023662B (en)

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Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102495650A (en) * 2011-12-19 2012-06-13 湖南工业大学 Multi-stage refined precise temperature control device and control method
CN103324220A (en) * 2012-03-19 2013-09-25 佛山市顺德昀陶设计有限公司 Electronic tea making control device

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1455165A (en) * 2002-04-29 2003-11-12 乐金电子(天津)电器有限公司 Microwave oven concurrently used as toasting bread
CN200952007Y (en) * 2006-04-29 2007-09-26 胥绍禹 Domestic constant temperature fermenting device
JP2008001852A (en) * 2006-06-26 2008-01-10 Fuji Shikiso Kk Writing instrument
CN201047624Y (en) * 2007-05-17 2008-04-16 美的集团有限公司 Micro-wave oven with quick-speed barbecue function
CN201143140Y (en) * 2008-01-11 2008-11-05 美的集团有限公司 High-temperature steam heating device of electric cooking appliance

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1455165A (en) * 2002-04-29 2003-11-12 乐金电子(天津)电器有限公司 Microwave oven concurrently used as toasting bread
CN200952007Y (en) * 2006-04-29 2007-09-26 胥绍禹 Domestic constant temperature fermenting device
JP2008001852A (en) * 2006-06-26 2008-01-10 Fuji Shikiso Kk Writing instrument
CN201047624Y (en) * 2007-05-17 2008-04-16 美的集团有限公司 Micro-wave oven with quick-speed barbecue function
CN201143140Y (en) * 2008-01-11 2008-11-05 美的集团有限公司 High-temperature steam heating device of electric cooking appliance

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