CN221351967U - Control circuit of air fryer - Google Patents
Control circuit of air fryer Download PDFInfo
- Publication number
- CN221351967U CN221351967U CN202323340176.5U CN202323340176U CN221351967U CN 221351967 U CN221351967 U CN 221351967U CN 202323340176 U CN202323340176 U CN 202323340176U CN 221351967 U CN221351967 U CN 221351967U
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- circuit
- power supply
- fan
- display screen
- singlechip
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- 230000000087 stabilizing effect Effects 0.000 claims description 16
- 230000002093 peripheral effect Effects 0.000 claims description 14
- 239000003990 capacitor Substances 0.000 claims description 11
- 229910052710 silicon Inorganic materials 0.000 claims description 6
- 239000010703 silicon Substances 0.000 claims description 6
- 101710199735 2-methylcitrate dehydratase Proteins 0.000 claims 2
- 101710159080 Aconitate hydratase A Proteins 0.000 claims 2
- 101710159078 Aconitate hydratase B Proteins 0.000 claims 2
- 208000002761 neurofibromatosis 2 Diseases 0.000 claims 2
- 230000005611 electricity Effects 0.000 claims 1
- 238000010438 heat treatment Methods 0.000 abstract description 20
- 230000000694 effects Effects 0.000 abstract description 12
- 230000017525 heat dissipation Effects 0.000 abstract description 9
- 238000001514 detection method Methods 0.000 abstract description 7
- 238000010586 diagram Methods 0.000 description 9
- 238000001914 filtration Methods 0.000 description 6
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 5
- 238000001816 cooling Methods 0.000 description 3
- 239000000498 cooling water Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
Abstract
The utility model discloses a control circuit of an air fryer, which comprises a power supply circuit, a singlechip circuit, a temperature detection circuit, a heating wire driving circuit and a display screen driving circuit, wherein the power supply circuit is used for supplying power to equipment, the singlechip circuit is electrically connected with the heating wire driving circuit, the display screen driving circuit and the temperature detection circuit, the output of the display screen driving circuit is connected with a display screen, the power supply circuit comprises an alternating current input end ACL and an alternating current input end ACN, the control circuit also comprises a fan starting control circuit electrically connected with the singlechip circuit, and the fan starting control circuit comprises a fan driving circuit for driving a fan to work and an automatic delay fan closing circuit with an extension function. The circuit realizes delay control of the fan, realizes the delay heat dissipation function of the inner part of the pot body in the later period, and improves the heat dissipation effect.
Description
Technical Field
The utility model relates to the technical field of air fryer circuit control, in particular to a control circuit of an air fryer.
Background
The air fryer generates hot air by heating the heat pipe in the machine at high temperature, then blows the high-temperature air into the fryer to heat food, so that the hot air circulates in a closed space, and the food is fried by utilizing the grease of the food, thereby dehydrating the food, enabling the surface to become golden and crisp, and achieving the frying effect.
However, the existing air fryer circuit has the following problems that the end time of a fan in the existing air fryer is generally consistent with the end time of a heating wire, but the internal temperature is too high after the whole air fryer stops working in the use process, so that in order to quickly cool the inside of a machine body, a basket in the air fryer needs to be taken down to realize quick cooling or cooling water circulation is additionally arranged for cooling, if the cooling water circulation is additionally arranged, the cost is definitely increased, the long-time use effect of internal cooling water is easily deteriorated, and the cooling effect is reduced, so that improvement is needed.
Disclosure of utility model
The utility model aims to provide a control circuit of an air fryer, which solves the problems of high heat dissipation cost and poor heat dissipation effect of the existing air fryer in the background technology.
In order to achieve the above purpose, the present utility model provides the following technical solutions: the control circuit of the air fryer comprises a power supply circuit for supplying power to equipment, a singlechip circuit, a temperature detection circuit, a heating wire drive circuit and a display screen drive circuit, wherein the singlechip circuit is electrically connected with the heating wire drive circuit, the display screen drive circuit and the temperature detection circuit, the output of the display screen drive circuit is connected with a display screen, the power supply circuit comprises an alternating current input end ACL and an alternating current input end ACN, the control circuit also comprises a FAN start control circuit electrically connected with the singlechip circuit, the FAN start control circuit comprises a FAN drive circuit for driving a FAN to work and an automatic delay FAN shut-off circuit with an extension function, the FAN drive circuit comprises a fifth NPN triode Q5, a twenty-third resistor R23, a fortieth unidirectional diode D40 and a second relay K2, the base electrode of the fifth NPN triode Q5 is connected with an I/O port of the singlechip circuit through the twenty-third resistor R23, the collector of the fifth NPN triode Q5 is connected in parallel with a forty unidirectional diode D40 and a coil of a second relay K2 between +5V supply voltage, the emitter of the fifth NPN triode Q5 is grounded, the automatic delay FAN closing circuit comprises a rectifier DB1, a fifth unidirectional diode VD5, a charging capacitor Ca, a rheostat RP and a controllable silicon VS, two input ends of the rectifier DB1 are respectively connected with an AC input end ACL and an AC input end ACN, a heating FAN FAN is connected in series between the AC input end ACL and the rectifier DB1, a controllable silicon VS and a branch circuit are connected in parallel between two outputs of the rectifier DB1, the branch circuit is formed by connecting normally open switches of the fifth unidirectional diode VD5, the charging capacitor Ca and the second relay K2 in series, and the fifth unidirectional diode VD5, A varistor RP is connected in series between the common connection terminal of the charging capacitor Ca and the G pin of the thyristor VS, and the negative electrode of the fifth unidirectional diode VD5 is connected with the charging capacitor Ca.
Preferably, in order to realize the WIFI control function, the singlechip circuit is also connected with a WIFI control circuit, wherein the WIFI control circuit comprises a WIFI chip, a WIFI peripheral driving circuit and a voltage stabilizing and regulating circuit I for stabilizing +5V voltage to +3.3V voltage and supplying power to the WIFI chip.
Preferably, the display driving circuit includes a display driving chip IC2 with a model TM1640 and a display peripheral driving circuit, and the display peripheral driving circuit is connected between the display driving chip IC2 and the display.
Preferably, the operation of the circuit is ensured to be more stable, and the singlechip comprises a singlechip IC1 with the model of GPM8F3750A and a singlechip peripheral circuit.
Preferably, the power supply circuit is more stable and safer, the power supply circuit further comprises a power supply chip U4 with the model of DP1801, a transformer T1, an output voltage stabilizing filter circuit, a pi-type filter and an input rectifying filter circuit, and the input rectifying filter circuit, the pi-type filter, the power supply chip U4 and the transformer T1 are sequentially connected among the AC input end ACL, the AC input end ACN and the output voltage stabilizing filter circuit.
Preferably, in order to realize the reminding function, a buzzer circuit is also connected to the display driving chip IC 2.
Compared with the prior art, the utility model has the following beneficial effects: this structure just can realize carrying out the time delay to air heater FAN through changing simple circuit and stop the operation, further improves the radiating effect, and the inner structure of air fryer needs to be changed in addition to the later stage, has also reduced the cost.
Drawings
FIG. 1 is a schematic diagram showing the circuit connection of a control circuit of an air fryer in accordance with the present embodiment 1;
FIG. 2 is a schematic diagram of the circuit connection of the SCM circuit in embodiment 1;
FIG. 3 is a schematic diagram showing the circuit connection between the display panel and the display panel driving circuit in the embodiment 1;
fig. 4 is a schematic circuit diagram of the power supply circuit in embodiment 1;
Fig. 5 is a schematic circuit diagram of the WIFI control circuit in embodiment 1;
FIG. 6 is a schematic circuit diagram of the heater driving circuit in embodiment 1;
FIG. 7 is a schematic circuit diagram of the temperature detecting circuit in embodiment 1;
Fig. 8 is a schematic circuit diagram of the buzzer circuit in embodiment 1;
Fig. 9 is a schematic circuit diagram of a fan start control circuit in embodiment 1.
In the figure: the power supply circuit 1, the output voltage stabilizing filter circuit 1-1, the pi-type filter 1-2, the input rectifying filter circuit 1-3, the singlechip circuit 2, the temperature detection circuit 3, the heating wire driving circuit 4, the display screen driving circuit 5, the display peripheral driving circuit 501, the display screen 6, the fan starting control circuit 7, the fan driving circuit 7-1, the automatic delay fan closing circuit 7-2, the branch circuit 8, the WIFI control circuit 9, the WIFI peripheral driving circuit 901, the voltage stabilizing adjustment circuit I902 and the buzzer circuit 10.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions in the embodiments of the present utility model will be clearly and completely described in the following in conjunction with the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without inventive faculty, are intended to be within the scope of the present utility model, based on the embodiments of the present utility model.
Example 1
Referring to fig. 1-9, the control circuit of the air fryer provided in this embodiment includes a power supply circuit 1 for supplying power to a device, a single-chip microcomputer circuit 2, a temperature detection circuit 3, a heating wire driving circuit 4, and a display screen driving circuit 5, wherein the single-chip microcomputer circuit 2 is electrically connected with the heating wire driving circuit 4, the display screen driving circuit 5, and the temperature detection circuit 3, the output of the display screen driving circuit 5 is connected with a display screen 6, the power supply circuit 1 includes an ac input end ACL, an ac input end two ACN, and further includes a FAN start control circuit 7 electrically connected with the single-chip microcomputer circuit 2, the FAN start control circuit 7 includes a FAN driving circuit 7-1 for driving the FAN to work and an automatic delay FAN shut-off circuit 7-2 with an extension function, the FAN driving circuit 7-1 comprises a fifth NPN triode Q5, a twenty-third resistor R23, a fortieth unidirectional diode D40 and a second relay K2, wherein the base electrode of the fifth NPN triode Q5 is connected with an I/O port of the singlechip circuit 2 through the twenty-third resistor R23, a fortieth unidirectional diode D40 and a coil of the second relay K2 are connected in parallel between the collector electrode of the fifth NPN triode Q5 and +5V supply voltage, the emitter electrode of the fifth NPN triode Q5 is grounded, the automatic delay FAN closing circuit 7-2 comprises a rectifier DB1, a fifth unidirectional diode VD5, a charging capacitor Ca, a rheostat RP and a controllable silicon VS, two input ends of the rectifier DB1 are respectively connected with an alternating current input end ACL, an alternating current input end two ACN, a heating FAN FAN is connected in series between the alternating current input end ACL and the rectifier DB1, the thyristor VS and the branch circuit 8 are connected in parallel between the two outputs of the rectifier DB1, the branch circuit 8 is formed by connecting a fifth unidirectional diode VD5, a charging capacitor Ca and a normally open switch of a second relay K2 in series, a rheostat RP is connected in series between the common connection end of the fifth unidirectional diode VD5 and the charging capacitor Ca and the G pin of the thyristor VS, and the cathode of the fifth unidirectional diode VD5 is connected with the charging capacitor Ca.
The working principle of the structure is as follows: when the rear part of the rectifier DB1 is not conducted, the front heating FAN FAN does not work, only the rear part of the rectifier DB1 is output, the heating FAN FAN works, when the heating FAN FAN needs to be controlled to work and the heating wire driving circuit 4 is matched to heat food in the frying basket, the singlechip circuit 2 can drive the FAN driving circuit 7-1 to work, the fifth NPN triode Q5 is guaranteed to be in a conducting state, then the coil of the second relay K2 is powered on, at the moment, the normally open switch of the second relay K2 is closed, at the moment, after rectification is carried out through the rectifier DB1, the output direct current voltage is charged into the charging capacitor Ca through the fifth unidirectional diode VD5, and meanwhile, the silicon controlled rectifier RP is conducted, at the moment, after the silicon controlled rectifier VS is conducted, the whole circuit forms current, at the moment, the heating FAN FAN works, the air is circulated, the heating effect of the food is further accelerated, then after the heating is completed, the heating wire driving circuit 4 stops heating, the singlechip circuit 2 can control the FAN driving circuit 7-1 to be in a conducting state, then the coil of the second relay K2 is powered off, at the moment, the normally open switch is powered off, the normally open switch is disconnected, the FAN structure is further required to be changed, the heat dissipation effect is further improved, and the heat dissipation effect of the FAN is further needed, and the FAN can be further improved, and the heat dissipation effect is realized, and the FAN structure is further, and the heat can be discharged through the heat dissipation effect is further, and the heat dissipation effect is further and the heat can be improved.
Preferably, in order to realize the WIFI control function, the single chip microcomputer circuit 2 is further connected with a WIFI control circuit 9, where the WIFI control circuit 9 includes a WIFI chip, a WIFI peripheral driving circuit 901, and a voltage stabilizing and adjusting circuit one 902 for stabilizing +5v voltage to +3.3v voltage and supplying power to the WIFI chip, in this embodiment, by adding the WIFI control circuit 9, the WIFI control function can be realized, so as to ensure that the user requirement is met; the display screen driving circuit 5 comprises a display screen driving chip IC2 with a model of TM1640 and a display peripheral driving circuit 501, wherein the display peripheral driving circuit 501 is connected between the display screen driving chip IC2 and the display screen 6, and the display screen driving circuit is better in stability of circuit display due to the adoption of the display screen chip IC2 with the model of TM 1640. Meanwhile, the circuit is ensured to run more stably, the singlechip circuit 2 comprises a singlechip IC1 with the model of GPM8F3750A and a singlechip peripheral circuit 502, and the singlechip IC1 with the model of GPM8F3750A is adopted to ensure that the circuit is more stable; meanwhile, in order to ensure that the power supply circuit is more stable and safe, the power supply circuit 1 further comprises a power supply chip U4 with the model of DP1801, a transformer T1, an output voltage stabilizing filter circuit 1-1, a pi-type filter 1-2 and an input rectifying filter circuit 1-3, wherein the input rectifying filter circuit 1-3, the pi-type filter 1-2, the power supply chip U4 and the transformer T1 are sequentially connected between an alternating current input end ACL, an alternating current input end ACN and the output voltage stabilizing filter circuit 1-1, and the pi-type filter is used for restraining high-frequency signals, so that filtering of signals is realized. The circuit can be used for filtering noise in the circuit, improving the quality of signals and the stability of the signals, thereby improving the performance of the circuit. In addition, the pi-type filter can be used for filtering oscillation in a circuit, so that stability of the circuit is improved, the input alternating current information is filtered through the input rectifying and filtering circuit 1-3, the output of the circuit is ensured to be more stable after the alternating current information is rectified and is transmitted to the power supply chip U4, and meanwhile, the output voltage stabilizing and filtering circuit 1-1 is further used for filtering and stabilizing an output signal, so that the output is further ensured to be more stable.
Preferably, in order to realize the reminding function, the display screen driving chip IC2 is further connected with a buzzer circuit 10, and the later alarm reminding function can be realized by arranging the buzzer circuit 10.
Claims (7)
1. The utility model provides a control circuit of air fryer, includes power supply circuit (1), singlechip circuit (2), temperature-detecting circuit (3), heater strip drive circuit (4) and display screen drive circuit (5) that are used for supplying power for equipment, singlechip circuit (2) be connected with heater strip drive circuit (4), display screen drive circuit (5) and temperature-detecting circuit (3) electricity, display screen drive circuit (5) output connection display screen (6), power supply circuit (1) include an ACL, two ACNs of AC input, its characterized in that: the intelligent control device is characterized by further comprising a FAN starting control circuit (7) electrically connected with the singlechip circuit (2), wherein the FAN starting control circuit (7) comprises a FAN driving circuit (7-1) for driving a FAN to work and an automatic delay FAN closing circuit (7-2) with an extension function, the FAN driving circuit (7-1) comprises a fifth NPN triode Q5, a twenty-third resistor R23, a fortieth unidirectional diode D40 and a second relay K2, a base electrode of the fifth NPN triode Q5 is connected with an I/O port of the singlechip circuit (2) through the twenty-third resistor R23, a fourth unidirectional diode D40 and a coil of the second relay K2 are connected in parallel between a collector electrode of the fifth NPN triode Q5 and a power supply voltage, an emitter electrode of the fifth NPN triode Q5 is grounded, the automatic delay FAN closing circuit (7-2) comprises a rectifier 1, a fifth unidirectional diode VD5, a charging capacitor Ca, a resistor RP and a controllable silicon, a base electrode of the fifth NPN triode Q5 is connected with an I/O port of the singlechip circuit (2) through the twenty-third resistor R23, a collector electrode of the fifth NPN triode Q5 and a coil of the second relay K2 is connected between an AC diode C input end of the fifth NPN triode Q5 and an AC power supply voltage of the fifth NPN triode Q5, and an AC power supply end of the AC power supply voltage of the fifth NPN diode is connected between an AC diode C input end of the AC diode and the AC power supply circuit (V P8, and a DC power supply end of the AC power supply circuit is connected between the AC power supply end of the AC power supply circuit and the AC power supply circuit (V C P2, and the AC power supply circuit C P1P is connected between the AC power supply circuit and the AC power supply circuit C.
2. The air fryer control circuit according to claim 1, wherein: the negative electrode of the fifth unidirectional diode VD5 is connected to the charging capacitor Ca.
3. The air fryer control circuit according to claim 1, wherein: the single chip microcomputer circuit (2) is also connected with a WIFI control circuit (9), and the WIFI control circuit (9) comprises a WIFI chip, a WIFI peripheral driving circuit (901) and a voltage stabilizing and adjusting circuit I (902) for stabilizing +5V voltage to +3.3V voltage and supplying power to the WIFI chip.
4. A control circuit for an air fryer according to claim 1 or 2 or 3, wherein: the display screen driving circuit (5) comprises a display screen driving chip IC2 with a model TM1640 and a display peripheral driving circuit (501), and the display peripheral driving circuit (501) is connected between the display screen driving chip IC2 and the display screen (6).
5. The air fryer control circuit according to claim 4, wherein: the singlechip circuit (2) comprises a singlechip IC1 with the model of GPM8F3750A and a singlechip peripheral circuit (502).
6. The air fryer control circuit according to claim 5, wherein: the power supply circuit (1) further comprises a power supply chip U4 with the model DP1801, a transformer T1, an output voltage stabilizing filter circuit (1-1), a pi-type filter (1-2) and an input rectifying filter circuit (1-3), wherein the input rectifying filter circuit (1-3), the pi-type filter (1-2), the power supply chip U4 and the transformer T1 are sequentially connected among the AC input end ACL, the AC input end ACN and the output voltage stabilizing filter circuit (1-1).
7. The air fryer control circuit according to claim 6, wherein:
a buzzer circuit (10) is also connected to the display driving chip IC 2.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221351967U true CN221351967U (en) | 2024-07-16 |
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| Date | Code | Title | Description |
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| GR01 | Patent grant |