CN102141783A - Control circuit of 24V direct-current electric pressure cooker - Google Patents
Control circuit of 24V direct-current electric pressure cooker Download PDFInfo
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- CN102141783A CN102141783A CN2011100899894A CN201110089989A CN102141783A CN 102141783 A CN102141783 A CN 102141783A CN 2011100899894 A CN2011100899894 A CN 2011100899894A CN 201110089989 A CN201110089989 A CN 201110089989A CN 102141783 A CN102141783 A CN 102141783A
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Abstract
The invention discloses a control circuit of a 24V direct-current electric pressure cooker. The control circuit comprises an operation and display part (1) and an execution and control part (2); the input of the control circuit of the 24V direct-current electric pressure cooker is connected with a 24V direct-current power supply, and the output of the control circuit is connected with a heating plate; the operation and display part (1) comprises a main control chip (11), a button (12), a display circuit (13), a driving circuit (14) and a connector I (15); and the execution and control part (2) comprises a reverse connection protection circuit (21), a relay setting power supply circuit (22), a direct-current/direct-current (DC/DC) conversion circuit (23), a main control chip power supply circuit (24), a temperature detection power supply I (25), a prompt tone output circuit (26), a setting power supply circuit (27), a relay driving circuit (28), a start setting circuit (29), a temperature detection power supply II (210) and a connector II (211). The control circuit of the 24V direct-current electric pressure cooker has wide application range and good energy-saving effect, and can be widely applied in various places with direct-current using conditions.
Description
Technical field
The present invention relates to a kind of 24V direct current pressure pot control circuit.
Background technology
Raising along with development of science and technology and people's living standard, use the electric pressure cooking saucepan of civil power and use oneself through general, but through understanding, on market, also do not use at present 24～28V the DC power supply as the electric pressure cooking saucepan of heating power supply, this place to no alternating current (civil power 220V AC power supplies) uses electric cooking appliance to make troubles, use in the place that causes electric pressure cooking saucepan can only be confined to possess alternating current, the usable range limitation is bigger, then can't working voltage power pot in the numerous places that do not possess alternating current, cause and use inconvenience, and adopting the electric pressure cooking saucepan energy consumption of civil power work bigger, energy-saving effect is relatively poor.
Summary of the invention
Technical matters to be solved by this invention is to overcome the deficiencies in the prior art, provides that a kind of easy to use, usable range is wide, the direct 24V direct current pressure pot control circuit of power supply of good energy-conserving effect, direct current.
The technical solution adopted in the present invention is: the present invention includes operation and display part and execution and control section; plug-in unit connects between above-mentioned two parts; described direct current pressure pot control circuit input connects the 24V direct supply; output connects heat-generating disc; described operation and display part comprise main control chip; button; display circuit; driving circuit; the I connector; described execution and control section comprise reverse-connection protection circuit; relay set power circuit; the DC/DC translation circuit; the main control chip power circuit; I temperature detection power supply; the prompt tone output circuit; the set power circuit; relay drive circuit; start setting circuit; II temperature detection power supply; the II connector; described reverse-connection protection circuit connects the anodal and described relay set power circuit of 24V direct current; described DC/DC translation circuit connects described relay set power circuit and main control chip power circuit; described main control chip power circuit connects described I temperature detection power supply and prompt tone output circuit; described relay drive circuit connects 24V direct current negative pole and described set power circuit and described startup setting circuit; and the relay that comprises in described relay drive circuit control heat-generating disc is connected with power supply; described startup setting circuit connects described II temperature detection power supply; described II connector connects described main control chip power circuit; the prompt tone output circuit; set power circuit and described II temperature detection power supply; described main control chip; button; display circuit; driving circuit; corresponding adaptive electrical connection between the I connector, described operation and display part and execution and control section patch with the II connector by described I connector and are connected.
Described reverse-connection protection circuit comprises that a diode forward is connected on power input, and shunt capacitance and electrochemical capacitor between the negative pole of described diode and power cathode, the negative pole of described diode be for altogether, the anodal output relay set power supply of described diode.
Described DC/DC translation circuit comprises DC/DC conversion chip, input filter circuit, the output filter circuit of pressure-stabilizing, described relay set power supply is through 1 pin of the described DC/DC conversion chip of input behind the described input filter circuit, the 4 pin output 5V constant voltage dc source of described DC/DC conversion chip, 3 pin of described DC/DC conversion chip, 5 pin connect common ground, described output filter circuit of pressure-stabilizing comprises voltage stabilizing diode, inductance and electric capacity, the positive pole of described voltage stabilizing diode connects common ground, the negative pole of described voltage stabilizing diode connects 2 pin of DC/DC conversion chip, described inductance is connected in parallel between 4 pin and 2 pin of described DC/DC conversion chip, the positive pole of described electric capacity connects 4 pin of described DC/DC conversion chip, and the negative pole of described electric capacity connects common ground.
Described main control chip power circuit and described I temperature detection power supply are to utilize capacitor filtering to obtain after respectively described 5V constant voltage dc source being inserted by diode forward.
Described prompt tone output circuit comprises resistance 1, resistance 2, resistance 3, transistor, buzzer, resistance in series resistance 2, resistance 1 successively between the collector of described transistor and described 5V constant voltage dc source, described buzzer is in parallel with described resistance resistance 2, the base stage of described transistor connects the 4th pin of described II connector by described resistance 3, and the emitter of described transistor connects the 6th pin of described II connector and altogether.
Described relay drive circuit comprises switch triode, relay, fly-wheel diode, resistance 4, resistance 5, the heat-generating disc lead-out terminal, the base stage of described switch triode connects described resistance 4, the 3rd pin of described resistance 5 of another termination of described resistance 4 and described II connector, the other end of described resistance 5 and the emitter of described switch triode connect common ground, the coil of described relay be connected between the collector and set power supply of described switch triode after described fly-wheel diode is in parallel, the negative pole of described relay normally open contact one termination 24V direct supply, the described heat-generating disc lead-out terminal of another termination.
Described button comprises a plurality of pushbutton switches, described display circuit comprises 7 sections charactrons and many LED luminotrons, described driving circuit comprises many driving switch transistors, described button, display circuit, corresponding adaptive connection back and the corresponding adaptive connection of described main control chip corresponding function pin between driving circuit, the 1st pin of described I connector connects the main control chip power supply, the 2nd pin of described I connector connects 19 pin of described main control chip, the 3rd pin of described I connector connects 14 pin of described main control chip, the 4th pin of described I connector connects 13 pin of described main control chip, the 5th pin of described I connector connects 4 pin of described main control chip, the 6th pin of described I connector connects 0 pin of described main control chip, described I connector and the corresponding adaptive connection of described II connector.
The invention has the beneficial effects as follows: owing to the present invention includes operation and display part and execution and control section; plug-in unit connects between above-mentioned two parts; described direct current pressure pot control circuit input connects the 24V direct supply; output connects heat-generating disc; described operation and display part comprise main control chip; button; display circuit; driving circuit; the I connector; described execution and control section comprise reverse-connection protection circuit; relay set power circuit; the DC/DC translation circuit; the main control chip power circuit; I temperature detection power supply; the prompt tone output circuit; the set power circuit; relay drive circuit; start setting circuit; II temperature detection power supply; the II connector; described reverse-connection protection circuit connects the anodal and described relay set power circuit of 24V direct current; described DC/DC translation circuit connects described relay set power circuit and main control chip power circuit; described main control chip power circuit connects described I temperature detection power supply and prompt tone output circuit; described relay drive circuit connects 24V direct current negative pole and described set power circuit and described startup setting circuit; and the relay that comprises in described relay drive circuit control heat-generating disc is connected with power supply; described startup setting circuit connects described II temperature detection power supply; described II connector connects described main control chip power circuit; the prompt tone output circuit; set power circuit and described II temperature detection power supply; described main control chip; button; display circuit; driving circuit; corresponding adaptive electrical connection between the I connector, described operation and display part and execution and control section patch with the II connector by described I connector and are connected.The present invention can use the 24V direct supply, and the place that has solved and do not have and exchange (civil power 220V AC power supplies) uses electric cooking appliance to make troubles; Direct supply directly uses on electric pressure cooking saucepan, does not exist as using alternating current to produce the power transmission and transformation loss; Perhaps use the such conversion efficiency of electronic inverter lower, there are not problems such as nonlinear distortion, coil and lead pressure drop thereof, power factor decline, the electromagnetic compatibility of semiconductor devices in the direct power supply of direct current, complete machine adopts the direct power supply of direct current to help saving energy and reduce the cost, and can obtain higher efficiency.
Usable range of the present invention is extremely wide, make the use of electric pressure cooking saucepan break through the limitation of prior art, can use in numerous places that do not possess the civil power condition, such as the transport vehicle of field work, fork truck, crane, ship, touring car, Caddy, New-energy electric vehicle or the like, the direct supply of all being furnished with the above direct-flow storage battery of direct current 24V, can use adaptive 24～28V DC power source voltage power pot carry out cooking, Baoshang, heat up water, heated food.
Electrical pressure cooker control circuit provided by the invention with 24～28V the DC power supply be heating power supply, can remedy the vacancy in existing electric cooking appliance market, in the place of no electric main power supply, use various accumulators to carry out cooking and become a reality as the electric pressure cooking saucepan of heating power supply.
Description of drawings
Fig. 1 is a circuit structure block diagram of the present invention;
Fig. 2 is operation of the present invention and display part circuit theory synoptic diagram;
Fig. 3 is execution of the present invention and control section circuit theory synoptic diagram.
Embodiment
As Fig. 1; Fig. 2; shown in Figure 3; the present invention in the present embodiment; it comprises operation and display part 1 and execution and control section 2; plug-in unit connects between above-mentioned two parts; adopt the 24V DC power supply; output connects heat-generating disc; described operation and display part 1 comprise main control chip 11; button 12; display circuit 13; driving circuit 14; I connector 15; described execution and control section 2 comprise reverse-connection protection circuit 21; relay set power circuit 22; DC/DC translation circuit 23; main control chip power circuit 24; I temperature detection power supply 25; prompt tone output circuit 26; set power circuit 27; relay drive circuit 28; start setting circuit 29; II temperature detection power supply 210; II connector 211; described reverse-connection protection circuit 21 connects the anodal and described relay set power circuit 22 of 24V direct current; described DC/DC translation circuit 23 connects described relay set power circuit 22 and main control chip power circuit 24; described main control chip power circuit 24 connects described I temperature detection power supply 25 and prompt tone output circuit 26; described relay drive circuit 28 connects 24V direct current negative pole and described set power circuit 27 and described startup setting circuit 29; and the relay that comprises in the described relay drive circuit 28 control heat-generating disc is connected with power supply; described startup setting circuit 29 connects described II temperature detection power supply 210; described II connector 211 connects described main control chip power circuit 24; prompt tone output circuit 26; set power circuit 27 and described II temperature detection power supply 210; described main control chip 11; button 12; display circuit 13; driving circuit 14; 15 adaptive electrical connections of correspondence of I connector, described operation and display part 1 and execution and control section 2 patch with II connector 211 by described I connector 15 and are connected.
Described reverse-connection protection circuit 21 comprises that a diode D8 forward is connected on power input; shunt capacitance 1 C1 and electrochemical capacitor E1 between the negative pole of described diode D8 and power cathode; the negative pole of described diode D8 is for altogether, the anodal output relay set power supply of described diode D8.
Described DC/DC translation circuit 23 comprises DC/DC conversion chip IC 1, input filter circuit, the output filter circuit of pressure-stabilizing, described relay set power supply is through 1 pin of the described DC/DC conversion chip IC 1 of input behind the described input filter circuit, the 4 pin output 5V constant voltage dc source of described DC/DC conversion chip IC 1,3 pin of described DC/DC conversion chip IC 1,5 pin connect common ground, described output filter circuit of pressure-stabilizing comprises voltage stabilizing diode, inductance and electric capacity 2 C5, the positive pole of described voltage stabilizing diode connects common ground, the negative pole of described voltage stabilizing diode connects 2 pin of DC/DC conversion chip IC 1, described inductance is connected in parallel between described DC/DC conversion chip IC 14 pin and 2 pin, the positive pole of described electric capacity 2 C5 connects 4 pin of described DC/DC conversion chip IC 1, and the negative pole of described electric capacity 2 C5 connects common ground.
Described main control chip power circuit 24 and described I temperature detection power supply 25 are to utilize capacitor filtering to obtain after respectively described 5V constant voltage dc source being inserted by the crystal diode forward.
Described prompt tone output circuit 26 comprises resistance 1 R5, resistance 2 R7, resistance 3 R9, transistor Q2, buzzer, resistance in series resistance 2 R7, resistance 1 R5 successively between the collector of described transistor Q2 and described 5V constant voltage dc source, described buzzer is in parallel with described resistance 2 R7, the base stage of described transistor Q2 connects the 4th pin of described II connector 211 by described resistance 3 R9, and the emitter of described transistor Q2 connects the 6th pin of described II connector 211 and altogether.
Described relay drive circuit 28 comprises switch triode Q3, relay, fly-wheel diode, resistance 4 R15, resistance 5 R16, the heat-generating disc lead-out terminal, the base stage of described switch triode Q3 meets described resistance 4 R15, the 3rd pin of described resistance 5 R16 of another termination of described resistance 4 R15 and described II connector 211, the other end of described resistance 5 R16 and the emitter of described switch triode Q3 connect common ground, the coil of described relay be connected between the collector and set power supply of described switch triode Q3 after described fly-wheel diode is in parallel, the negative pole of described relay normally open contact one termination 24V direct supply, the described heat-generating disc lead-out terminal of another termination.
Described button 12 comprises a plurality of pushbutton switches, described display circuit 13 comprises 7 sections charactrons and many LED luminotrons, described driving circuit 14 comprises many driving switch transistors, described button 12, display circuit 13, the adaptive connection of 14 correspondences of driving circuit back and the corresponding adaptive connection of described main control chip 11 corresponding function pin, the 1st pin of described I connector 15 connects the main control chip power supply, the 2nd pin of described I connector 15 connects 19 pin of described main control chip 11, the 3rd pin of described I connector 15 connects 14 pin of described main control chip 11, the 4th pin of described I connector 15 connects 13 pin of described main control chip 11, the 5th pin of described I connector 15 connects 4 pin of described main control chip 11, the 6th pin of described I connector 15 connects 0 pin of described main control chip 11, described I connector 15 and described II connector 211 corresponding adaptive connections.
Consider present 24V the DC car battery use and the scope that discharges and recharges between 24～28V, so the present invention design the input service voltage range 24～28V DC.The present invention can adapt to any 24～28V greater than 35Ah the DC power supply; the present invention is provided with power supply reverse-connection protection circuit 21; in case power supply polarity is connect circnit NOT and can not worked; the LED charactron can not lighted; the positive and negative polarity of having only positive and negative electrode to connect the corresponding one by one DC power supply of lead connects the back circuit just can work, and the LED charactron sends prompt tone when lighting.If connect instead, circuit can not worked, and can not cause the damage of equipment such as accumulator and circuit lead thereof yet.
The course of work introduction of structure applications of the present invention on electric pressure cooking saucepan:
When the present invention on electric pressure cooking saucepan correct connect 24～28V the DC power supply, circuit is at first by DC/DC conversion IC 1(LM2576) with 24V the DC power source conversion be 5V the DC power supply, again by diode D1 process capacitor C 8, form MCU master chip power supply after capacitor C 9 filtering to main control chip 11(IC2 S3S9454) power supply, simultaneously 24V the also back contact of the pressure switch by electric pressure cooking saucepan of DC power supply, pass through resistance R 12 again, after voltage stabilizing becomes 4.5V, start main control chip 11(IC2 S3S9454 as set output through resistance R 13) start working, under various cooking functions, main control chip 11(IC2 S3S9454) output terminal drives the work of JR1-24V/DC relay by triode Q3, the moving together contact control 24V500W electric heat-generating disc of JR1-24V/DC relay supplies, outage, according to the preliminary election menu, carry out the menu that prelists and finish the cooking overall process according to programmed control.
24～28V the DC power supply on electric pressure cooking saucepan, directly use, do not exist to produce the power transmission and transformation loss the picture use alternating current; Perhaps use the such conversion efficiency of electronic inverter lower, there are not problems such as nonlinear distortion, coil and lead pressure drop thereof, power factor decline, the electromagnetic compatibility of semiconductor devices in the direct power supply of direct current, complete machine adopts the direct power supply of direct current to help saving energy and reduce the cost, and can obtain higher efficiency.Use IC1 switching mode DC/DC transducer LM2576HV-5.0,24～28V the DC power conversion provide control circuit direct current 5V working power for 5V, since IC1 used Switching Power Supply quite stabilized voltage supply reduce dissipated power and thermal value near the 20V pressure drop, by contrast, saved the energy consumption of control circuit.
Claims (7)
1. 24V direct current pressure pot control circuit; it comprises operation and display part (1) and execution and control section (2); described 24V direct current pressure pot control circuit input connects the 24V direct supply; output connects heat-generating disc; it is characterized in that: described operation and display part (1) comprises main control chip (11); button (12); display circuit (13); driving circuit (14); I connector (15); described execution and control section (2) comprise reverse-connection protection circuit (21); relay set power circuit (22); DC/DC translation circuit (23); main control chip power circuit (24); I temperature detection power supply (25); prompt tone output circuit (26); set power circuit (27); relay drive circuit (28); start setting circuit (29); II temperature detection power supply (210); II connector (211); described reverse-connection protection circuit (21) connects the anodal and described relay set power circuit (22) of 24V direct current; described DC/DC translation circuit (23) connects described relay set power circuit (22) and main control chip power circuit (24); described main control chip power circuit (24) connects described I temperature detection power supply (25) and prompt tone output circuit (26); described relay drive circuit (28) connects 24V direct current negative pole and described set power circuit (27) and described startup setting circuit (29); and the relay that comprises in the described relay drive circuit (28) control heat-generating disc is connected with power supply; described startup setting circuit (29) connects described II temperature detection power supply (210); described II connector (211) connects described main control chip power circuit (24); prompt tone output circuit (26); set power circuit (27) and described II temperature detection power supply (210); described main control chip (11); button (12); display circuit (13); driving circuit (14); corresponding adaptive electrical connection between I connector (15), described operation and display part (1) and execution and control section (2) patch with II connector (211) by described I connector (15) and are connected.
2. 24V direct current pressure pot control circuit according to claim 1; it is characterized in that: described reverse-connection protection circuit (21) comprises that a diode (D8) forward is connected on power input; shunt capacitance 1(C1 between the negative pole of described diode (D8) and power cathode) and electrochemical capacitor (E1); the negative pole of described diode (D8) is for altogether, the anodal output relay set power supply of described diode (D8).
3. 24V direct current pressure pot control circuit according to claim 1 and 2, it is characterized in that: described DC/DC translation circuit (23) comprises DC/DC conversion chip (IC1), input filter circuit, the output filter circuit of pressure-stabilizing, described relay set power supply is through 1 pin of the described DC/DC conversion chip of input (IC1) behind the described input filter circuit, the 4 pin output 5V constant voltage dc source of described DC/DC conversion chip (IC1), 3 pin of described DC/DC conversion chip (IC1), 5 pin connect common ground, described output filter circuit of pressure-stabilizing comprises voltage stabilizing diode, inductance and electric capacity 2(C5), the positive pole of described voltage stabilizing diode connects common ground, the negative pole of described voltage stabilizing diode connects 2 pin of DC/DC conversion chip (IC1), described inductance is connected in parallel between 4 pin and 2 pin of described DC/DC conversion chip (IC1), described electric capacity 2(C5) positive pole connects 4 pin of described DC/DC conversion chip (IC1), described electric capacity 2(C5) negative pole connect common ground.
4. 24V direct current pressure pot control circuit according to claim 3 is characterized in that: described main control chip power circuit (24) and described I temperature detection power supply (25) are to utilize capacitor filtering to obtain after respectively described 5V constant voltage dc source being inserted by the crystal diode forward.
5. 24V direct current pressure pot control circuit according to claim 4, it is characterized in that: described prompt tone output circuit (26) comprises resistance 1(R5), resistance 2(R7), resistance 3(R9), transistor (Q2), buzzer, resistance in series resistance 2(R7 successively between the collector of described transistor (Q2) and described 5V constant voltage dc source), resistance 1(R5), described buzzer and described resistance 2(R7) in parallel, the base stage of described transistor (Q2) is by described resistance 3(R9) connect the 4th pin of described II connector (211), the emitter of described transistor (Q2) connects the 6th pin of described II connector (211) and altogether.
6. 24V direct current pressure pot control circuit according to claim 5, it is characterized in that: described relay drive circuit (28) comprises switch triode (Q3), relay, fly-wheel diode, resistance 4(R15), resistance 5(R16), the heat-generating disc lead-out terminal, the base stage of described switch triode (Q3) meets described resistance 4(R15), the described resistance 5(R16 of another termination) and the 3rd pin of described II connector (211) described resistance 4(R15), the emitter of the other end described resistance 5(R16) and described switch triode (Q3) connects common ground, the coil of described relay be connected between the collector and set power supply of described switch triode (Q3) after described fly-wheel diode is in parallel, the negative pole of described relay normally open contact one termination 24V direct supply, the described heat-generating disc lead-out terminal of another termination.
7. 24V direct current pressure pot control circuit according to claim 6, it is characterized in that: described button (12) comprises a plurality of pushbutton switches, described display circuit (13) comprises 7 sections charactrons and many LED luminotrons, described driving circuit (14) comprises many driving switch transistors, described button (12), display circuit (13), corresponding adaptive connection back and the corresponding adaptive connection of described main control chip (11) corresponding function pin between driving circuit (14), the 1st pin of described I connector (15) connects the main control chip power supply, the 2nd pin of described I connector (15) connects 19 pin of described main control chip (11), the 3rd pin of described I connector (15) connects 14 pin of described main control chip (11), the 4th pin of described I connector (15) connects 13 pin of described main control chip (11), the 5th pin of described I connector (15) connects 4 pin of described main control chip (11), the 6th pin of described I connector (15) connects 0 pin of described main control chip (11), described I connector (15) and the corresponding adaptive connection of described II connector (211).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100899894A CN102141783A (en) | 2011-04-12 | 2011-04-12 | Control circuit of 24V direct-current electric pressure cooker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100899894A CN102141783A (en) | 2011-04-12 | 2011-04-12 | Control circuit of 24V direct-current electric pressure cooker |
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| Publication Number | Publication Date |
|---|---|
| CN102141783A true CN102141783A (en) | 2011-08-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100899894A Pending CN102141783A (en) | 2011-04-12 | 2011-04-12 | Control circuit of 24V direct-current electric pressure cooker |
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| CN (1) | CN102141783A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5278145A (en) * | 1975-12-18 | 1977-07-01 | Raytheon Co | High frequency power supply microwave oven |
| CN200970136Y (en) * | 2006-11-10 | 2007-11-07 | 劳刚锋 | Electric controller for electric pressure cooker |
| CN202067102U (en) * | 2011-04-12 | 2011-12-07 | 珠海双喜电器有限公司 | 24V direct current electric pressure cooker control circuit |
| JP6098080B2 (en) * | 2012-09-14 | 2017-03-22 | 株式会社リコー | Continuous production method of polymer, continuous production apparatus thereof, production method of fiber and production method of film |
-
2011
- 2011-04-12 CN CN2011100899894A patent/CN102141783A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5278145A (en) * | 1975-12-18 | 1977-07-01 | Raytheon Co | High frequency power supply microwave oven |
| CN200970136Y (en) * | 2006-11-10 | 2007-11-07 | 劳刚锋 | Electric controller for electric pressure cooker |
| CN202067102U (en) * | 2011-04-12 | 2011-12-07 | 珠海双喜电器有限公司 | 24V direct current electric pressure cooker control circuit |
| JP6098080B2 (en) * | 2012-09-14 | 2017-03-22 | 株式会社リコー | Continuous production method of polymer, continuous production apparatus thereof, production method of fiber and production method of film |
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Application publication date: 20110803 |