CN112394659A - Fan current detection control method for household appliance - Google Patents
Fan current detection control method for household appliance Download PDFInfo
- Publication number
- CN112394659A CN112394659A CN202011150925.6A CN202011150925A CN112394659A CN 112394659 A CN112394659 A CN 112394659A CN 202011150925 A CN202011150925 A CN 202011150925A CN 112394659 A CN112394659 A CN 112394659A
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- China
- Prior art keywords
- fan
- computer board
- pcb
- current value
- household appliance
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0423—Input/output
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/25—Pc structure of the system
- G05B2219/25257—Microcontroller
Abstract
A fan current detection control method of a household appliance comprises the following steps: 1) after the household appliance is electrified, the timer is adjusted, the PCB controls the computer board to give a starting signal, and the fan rotates; 2) after the fan rotates, the PCB controls the computer board to detect the current value of the fan and judges whether the current value of the fan meets the requirement of a set value or not; 3) if the current value meets the requirement of a set numerical value, the fan is in a normal operation state, the PCB controls the computer board to control the fan to continue to operate, and gives an instruction of actuation of the relay, the relay actuates to supply power, the temperature controller and the functional switch are adjusted, and the heating component of the household appliance works normally; if the current value does not reach the requirement of the set value, the fan is in an abnormal state, the PCB controls the computer board to control the fan to stop rotating, a fault sound prompt is sent, the relay is disconnected, and the heating component of the household appliance stops working. The fan current detection control method of the household appliance can better protect heating components of the whole machine.
Description
Technical Field
The invention relates to the technical field of household appliances, in particular to a fan current detection control method of a household appliance.
Background
Chinese patent document No. CN2936080 discloses a multifunctional smokeless barbecue machine in 2007, 8/22, which includes a base, a first box body and a second box body installed at two ends of the base, an oven located between the first box body and the second box body, and a temperature adjusting device and a temperature limiter for controlling the heating temperature of the electric heating tube, wherein the oven is provided with the electric heating tube, the second box body is provided with a motor, one end of the oven is detachably installed on the first box body, the other end of the oven is detachably installed on the output shaft of the motor in the second box body, and the second box body can be turned outwards. The oven is abnormal protection when a temperature limiter is used for protecting heating elements from failure, but the limit protection often causes the damage of the heating elements and the deformation of appearance pieces, so that the maintenance cost of the whole oven is high, and the whole oven is more likely to be directly scrapped.
Therefore, further improvements are needed.
Disclosure of Invention
The invention aims to provide a fan current detection control method of a household appliance, which can effectively protect heating components, has low maintenance cost and strong practicability and overcomes the defects in the prior art.
The fan current detection control method of the household appliance is designed according to the purpose, and is characterized in that: the method comprises the following steps:
1) after the household appliance is electrified, the timer is adjusted, the PCB controls the computer board to give a starting signal, and the fan rotates;
2) after the fan rotates, the PCB controls the computer board to detect the current value of the fan and judges whether the current value of the fan meets the requirement of a set value or not;
3) if the current value meets the requirement of a set numerical value, the fan is in a normal operation state, the PCB controls the computer board to control the fan to continue to operate, and gives an instruction of actuation of the relay, the relay actuates to supply power, the temperature controller and the functional switch are adjusted, and the heating component of the household appliance works normally; if the current value does not reach the requirement of the set value, the fan is in an abnormal state, the PCB controls the computer board to control the fan to stop rotating, a fault sound prompt is sent, the relay is disconnected, and the heating component of the household appliance stops working.
In the step 1), after the PCB controls the computer board to give out a starting signal, if the current value fed back to the PCB by the fan is lower than the set value requirement, the PCB controls the computer board to give out a fault sound prompt, and the fan is in a disconnected state.
And 3) in the normal operation of the fan, the PCB controls the computer board to detect the current value of the fan at intervals, and judges whether the current value of the fan meets the requirement of a set value.
The PCB control computer board is provided with a control chip for controlling the running of the fan, a detection chip for detecting the current value of the fan and a buzzer for giving out fault sound prompt, and the relay is arranged on the PCB control computer board.
The fan is a direct current fan and is respectively connected with the DC-L port and the DC-N port of the PCB control computer board.
The timer is connected with the L1 port of the PCB control computer board, the L2 port of the PCB control computer board, the temperature controller, the function switch and the heating element are sequentially connected, and the heating element is respectively connected with the temperature limiter and the N1 port of the PCB control computer board.
In order to better protect heating components of the whole machine, the fan current detection control method of the household appliance judges whether the whole machine continues to work or not by detecting the current difference generated when a fan of a key wearing part is damaged, thereby avoiding a series of maintenance costs and scrappings such as damage of the heating components due to overhigh temperature and deformation of an appearance part caused by damage of the fan of the wearing part, and greatly improving the user experience.
Drawings
Fig. 1 is a schematic circuit diagram of an oven according to an embodiment of the present invention.
Fig. 2 is a process schematic diagram of a fan current detection control method according to an embodiment of the present invention.
Detailed Description
The invention is further described with reference to the following figures and examples.
Referring to fig. 1-2, the fan current detection control method for a household appliance, taking an oven as an example, includes the following steps:
1) after the oven is powered on, the timer 1 is adjusted, the PCB controls the computer board 2 to give a starting signal, and the fan 8 rotates;
2) after the fan 8 rotates, the PCB controls the computer board 2 to detect the current value of the fan 8 and judges whether the current value of the fan 8 meets the requirement of a set value or not;
3) if the current value meets the requirement of the set numerical value, the fan 8 is in a normal operation state, the PCB controls the computer board 2 to control the fan 8 to continue to operate, and gives an instruction of attraction of the relay 4, the relay 4 attracts and supplies power, the temperature controller 10 and the function switch 11 are adjusted, and the heating component 12 of the oven normally works; if the current value does not reach the requirement of the set value, the fan 8 is in an abnormal state, the PCB control computer board 2 controls the fan 8 to stop rotating and sends a fault sound prompt, then the relay 4 is controlled to be disconnected, and the heating element 12 of the oven stops working.
After the fan 8 starts, whether the current value of the fan 8 reaches the set value requirement or not is detected, whether the fan 8 normally operates is judged, if the fan 8 normally operates, the PCB control computer board 2 controls the heating element 12 to normally operate, if the fan 8 is abnormal, the PCB control computer board 2 disconnects the relay 4, the heating element 12 of the oven stops operating, and the current detection control method can timely and effectively protect the heating element 12 when the fan 8 is abnormal, and avoids the heating element 12 from being damaged due to extreme protection.
In the step 1), after the PCB control computer board 2 gives a start signal, if the current value fed back to the PCB control computer board 2 by the fan 8 is lower than the set value requirement, the PCB control computer board 2 gives a fault sound prompt, the fan 8 is in a disconnected state, the fan 8 in this situation may be damaged and cannot operate, and the heating component 12 of the oven cannot work.
In the step 3), when the fan 8 normally operates, the PCB controls the computer board 2 to detect the current value of the fan 8 at intervals, and judges whether the current value of the fan 8 meets the requirement of a set value. The running state of the fan 8 can be monitored at any time.
The PCB control computer board 2 is provided with a control chip 5 for controlling the operation of the fan 8, a detection chip 6 for detecting the current value of the fan 8, a buzzer 3 for giving a fault sound prompt and a direct current power supply 7 for supplying power to the PCB control computer board 2, the relay 4 is arranged on the PCB control computer board 2, and the control chip 5 controls the suction and the disconnection of the relay 4.
The fan 8 is a direct current fan, and the fan 8 is respectively connected with a DC-L port and a DC-N port of the PCB control computer board 2.
The input end of the timer 1 is connected with the live wire access end L, the output end of the timer 1 is connected with the L1 port of the PCB control computer board 2, the L2 port of the PCB control computer board 2, the temperature controller 10, the function switch 11 and the heating element 12 are sequentially connected, the heating element 12 is respectively connected with the output end of the temperature limiter 9 and the N1 port of the PCB control computer board 2, the input end of the temperature limiter 9 is connected with the zero line access end N, the temperature limiter 9 can cut off the heating element 12 when the temperature of the heating element 12 is too high, and the limiter 9 can play a role in protecting the heating element 12 when the fan current detection control method cannot be executed due to the fault of the PCB control computer board 2.
The foregoing is a preferred embodiment of the present invention, and the basic principles, principal features and advantages of the invention are shown and described. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are intended to illustrate the principles of the invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, and the invention is intended to be protected by the following claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. A fan current detection control method of a household appliance is characterized by comprising the following steps: the method comprises the following steps:
1) after the household appliance is electrified, the timer (1) is adjusted, the PCB controls the computer board (2) to give a starting signal, and the fan (8) rotates;
2) after the fan (8) rotates, the PCB controls the computer board (2) to detect the current value of the fan (8), and judges whether the current value of the fan (8) meets the requirement of a set value or not;
3) if the current value meets the requirement of a set numerical value, the fan (8) is in a normal operation state, the PCB control computer board (2) controls the fan (8) to continue to operate and gives an instruction of attraction of the relay (4), the relay (4) attracts and supplies power, the temperature controller (10) and the function switch (11) are adjusted, and the heating component (12) of the household appliance normally works; if the current value does not reach the requirement of the set value, the fan (8) is in an abnormal state, the PCB control computer board (2) controls the fan (8) to stop rotating and sends out a fault sound prompt, the relay (4) is disconnected, and the heating component (12) of the household appliance stops working.
2. The fan current detection control method of a home appliance according to claim 1, characterized in that: in the step 1), after the PCB control computer board (2) gives a starting signal, if the current value fed back to the PCB control computer board (2) by the fan (8) is lower than the set value requirement, the PCB control computer board (2) gives a fault sound prompt, and the fan (8) is in a disconnected state.
3. The fan current detection control method of a home appliance according to claim 1, characterized in that: in the step 3), when the fan (8) normally operates, the PCB controls the computer board (2) to detect the current value of the fan (8) at intervals, and judges whether the current value of the fan (8) meets the requirement of a set value.
4. The fan current detection control method of a home appliance according to claim 1, characterized in that: the PCB control computer board (2) is provided with a control chip (5) for controlling the operation of the fan (8), a detection chip (6) for detecting the current value of the fan (8) and a buzzer (3) for sending fault sound prompt, and the relay (4) is arranged on the PCB control computer board (2).
5. The fan current detection control method of a home appliance according to claim 4, wherein: the fan (8) is a direct current fan, and the fan (8) is respectively connected with a DC-L port and a DC-N port of the PCB control computer board (2).
6. The fan current detection control method of a home appliance according to claim 5, wherein: the timer (1) is connected with an L1 port of the PCB control computer board (2), an L2 port of the PCB control computer board (2), the temperature controller (10), the functional switch (11) and the heating element (12) are sequentially connected, and the heating element (12) is respectively connected with the temperature limiter (9) and an N1 port of the PCB control computer board (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011150925.6A CN112394659A (en) | 2020-10-24 | 2020-10-24 | Fan current detection control method for household appliance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011150925.6A CN112394659A (en) | 2020-10-24 | 2020-10-24 | Fan current detection control method for household appliance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112394659A true CN112394659A (en) | 2021-02-23 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011150925.6A Pending CN112394659A (en) | 2020-10-24 | 2020-10-24 | Fan current detection control method for household appliance |
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| CN (1) | CN112394659A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114460987A (en) * | 2022-02-22 | 2022-05-10 | 广东恒扬新材料有限公司 | Energy-saving temperature control system for improving performance of formed foil |
| CN116930596A (en) * | 2023-09-19 | 2023-10-24 | 江苏鲁班环保科技有限公司 | Fan current detection control method and system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203502776U (en) * | 2013-10-12 | 2014-03-26 | 樱花卫厨（中国）股份有限公司 | Application circuit for real-time fan current detection |
| CN104834261A (en) * | 2015-05-13 | 2015-08-12 | 韩悦 | Household electrical appliance based on trigger induction signals, and monitoring system and method thereof |
| CN105157237A (en) * | 2015-09-15 | 2015-12-16 | 广东美的暖通设备有限公司 | Heater control method and control device |
| CN206805180U (en) * | 2017-05-13 | 2017-12-26 | 南京搜新智能科技有限公司 | A kind of intelligent gateway main frame |
-
2020
- 2020-10-24 CN CN202011150925.6A patent/CN112394659A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203502776U (en) * | 2013-10-12 | 2014-03-26 | 樱花卫厨（中国）股份有限公司 | Application circuit for real-time fan current detection |
| CN104834261A (en) * | 2015-05-13 | 2015-08-12 | 韩悦 | Household electrical appliance based on trigger induction signals, and monitoring system and method thereof |
| CN105157237A (en) * | 2015-09-15 | 2015-12-16 | 广东美的暖通设备有限公司 | Heater control method and control device |
| CN206805180U (en) * | 2017-05-13 | 2017-12-26 | 南京搜新智能科技有限公司 | A kind of intelligent gateway main frame |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114460987A (en) * | 2022-02-22 | 2022-05-10 | 广东恒扬新材料有限公司 | Energy-saving temperature control system for improving performance of formed foil |
| CN116930596A (en) * | 2023-09-19 | 2023-10-24 | 江苏鲁班环保科技有限公司 | Fan current detection control method and system |
| CN116930596B (en) * | 2023-09-19 | 2023-12-19 | 江苏鲁班环保科技有限公司 | Fan current detection control method and system |
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Application publication date: 20210223 |