CN206867128U - A kind of air fryer with power-down protection - Google Patents
A kind of air fryer with power-down protection Download PDFInfo
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- CN206867128U CN206867128U CN201621434560.9U CN201621434560U CN206867128U CN 206867128 U CN206867128 U CN 206867128U CN 201621434560 U CN201621434560 U CN 201621434560U CN 206867128 U CN206867128 U CN 206867128U
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- air fryer
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- down protection
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Abstract
A kind of air fryer with power-down protection,Including upper shell,Lower house,The hot blast component being arranged in upper shell and the cooking container being arranged in lower house,The hot blast component includes heater and fan,Main control board and the motor rotated for driving fan are additionally provided with the upper shell,The main control board includes main control chip,The main control chip produces control signal according to control data and controls heater and fan work by control signal,The main control chip includes central processing unit,Wherein,The main control chip also includes being used for the memory cell for storing the current control data that the central processing unit transmits at interval of a period of time T,The main control chip is provided with the timer for being used for monitoring period of time T,The utility model, which provides one kind, has power-down protection,The air fryer of memory cell service life can effectively be extended.
Description
Technical field
It the utility model is related to field of kitchen electric appliance, more particularly to a kind of air fryer with power-down protection.
Background technology
Air fryer generally comprises upper shell, lower house, hot blast component, main control board and cooking container, the master control
Circuit board includes main control chip, and the main control chip includes memory.In order to realize the continuity cooked after machine power-off, air
Fryer can typically design power-down protection, but design zero cross detection circuit is usually required in prior art and detects sky in real time
The break-make electricity condition that gas is complained and quarrel loudly, power down background storage start to store control data.And just start data storage after machine power down,
Easily there is the problems such as storage time is limited, and the data of storage are easily lost, after machine is re-energised, it is impossible to read effective
Control data, therefore hot blast component can not receive the control instruction to work on, air fryer is just in holding state.User is led to
The condition adjudgement residue cooking process that often needs are baked according to food cooking needs time and the temperature of hot blast component heating, again
Heating parameters are manually entered, but user is unfamiliar with time and the temperature relation of food cooking state and the heating of hot blast component, again
The parameter of setting often normally cooks required parameter with food and relatively large deviation be present.Hot blast component is according to the heating ginseng re-entered
Number is cooked, and the heating cooking time may be too short or long, so that the food of air fryer culinary art easily occurs not
Bake or cooked-on situation, influence food mouthfeel.Make in addition, prior art is typically chosen repetition when storing power down control data
With a certain piece of storage region of memory, the service life of memory is so easily reduced.
The content of the invention
The purpose of this utility model is to provide a kind of air fryer with power-down protection.
In order to solve the above-mentioned technical problem, the utility model adopts the following technical scheme that：
A kind of air fryer with power-down protection, including upper shell, lower house, the hot blast being arranged in upper shell
Component and the cooking container being arranged in lower house, the hot blast component include heater and fan, gone back in the upper shell
Main control board and the motor rotated for driving fan are provided with, the main control board includes main control chip, the master control
Chip produces control signal according to control data and controls heater and fan work, the main control chip by control signal
Including central processing unit, wherein, the main control chip also includes being used to store the central processing unit at interval of week time
The memory cell of the current control data of phase T transmission, the main control chip are provided with the timer for being used for monitoring period of time T.
Preferably, 5 seconds≤T≤60 second.
Preferably, the memory cell is EEPROM.
Preferably, the control data includes heat time and heating-up temperature.
Preferably, the EEPROM is provided with multiple storage regions, the multiple storage region be used to storing in turn it is described in
The control data of central processor transmission.
Preferably, the main control board includes power circuit, and power circuit turns on, described in the central processing unit reading
The information of memory cell, and form the control signal that works on of air fryer according to the information of reading.
Preferably, the upper shell is provided with guidance panel, and the guidance panel is provided with the input button of heating parameters, institute
State main control board and be provided with operation panel circuit, the input button passes through the operation panel circuit and main control chip electricity
Connection, the signal of the input key-press input are transmitted to main control chip by operation panel circuit.
Preferably, detector unit, the detection signal transmission of the detector unit are additionally provided with the upper shell
To main control chip.
Preferably, the memory capacity of the EEPROM is C, wherein 256 bytes≤C≤2048 bytes.
Preferably, the heater is heating tube, heater strip or halide torch.
Compared with prior art, the beneficial effects of the utility model are：
1. air fryer described in the utility model is provided with power-down protection circuit, in air fryer cooking food, heating dress
Current heating-up temperature is put to parameters related with culinary art such as rotating speeds that heat time, fan are current every period of time T to pass through
Power-down protection circuit is transferred to main control chip, when user extracts fry basket out or externally fed interruption causes power-off, air fryer
Heater and fan are stopped, and when machine is re-energised, the central processing unit of main control chip can effectively read storage
The unit heating parameters information that last period of time T stores before power down, and forms control instruction so that heater and
Fan, which works on, completes the cooking process of food, so as to reach predetermined culinary art effect；Usual user cooks in air fryer
Prepare food work when need irregularly extract out fry basket check food cooking state or midway carry out feeding operation, sky described in the utility model
Gas is complained and quarrel loudly stores current computer heating control data by memory cell every period of time T, can meet these operational requirements of user,
When extracting fry basket out, machine is stopped, and after fry basket reinserts, reads the control data stored before power down and works on, can
To ensure the continuity of food cooking process.The power down protection of the air fryer is to store current add by memory cell timing
What the control data of thermal was realized, it is not necessary to the outside zero cross detection circuit of design, it can avoid introducing impulse disturbances, can also
Reduce machine cost.
2. the time cycle is T, wherein 5 seconds≤T≤60 second, so setting is advantageous in that, the master control of air fryer
The time cycle of chip transmitting control data be the time cycle of the storage control data of the i.e. memory cell of T be T, also illustrate air
The maximum time deviation that the power-down protection that complaining and quarrel loudly has recovers control data is T, and T value is 5 ~ 60 seconds, and scope is closed
Reason, machine power down protection process are small to the heating process and food cooking influential effect of air fryer；Work as T>At 60 seconds, recover control
The time deviation of data processed is larger, and when air fryer is re-energised, what main control chip was read is the previous cycle deposit of power down
Data, the time that the heater of air fryer continues heating work may be longer than original setting time more than 60 seconds（One
Individual period of time T）, therefore influence heat foods effect and mouthfeel；Work as T<During 5S, the main control chip of the air fryer is deposited every time
Storage and the time for reading data break are shorter, constantly repeat read-write operation when air fryer works, influence memory cell
Service life.
, can be with 3. the memory cell is EEPROM, memory cell of the EEPROM as air fryer main control chip
It is repeatedly erasable, recycling, therefore memory cell service life can be lifted, reduce air fryer maintenance cost；It is and described
For EEPROM as memory cell, the data of storage are reliable, not easy to be lost, can effectively be read by main control chip after powered up, are
The air fryer provides a kind of new departure that can effectively realize power-down protection, can both meet because inside air fryer
The microswitch of setting is triggered caused power down, can also meet the power down caused by external power source open circuit.
4. the control data includes heat time and heating-up temperature, it is because heat time and heating temperature so to set
Degree most important two parameters when being air fryer cooking food, can directly it be controlled by the two parameters with influenceing food materials
Heating effect and culinary art mouthfeel, smoothly storage can effectively realize air fryer to the main control chip with reading the two parameters
Power-down protection.
5. the EEPROM is provided with multiple storage regions, the multiple storage region is fried for storing the air in turn
The control data of pot central processing unit transmission, different from prior art, simply fixation uses some storage region, so can be with
The greatly service life of lifting memory cell, meets demand of the general user to the service life of air fryer, while can be with
Save air fryer and change cost caused by main control chip.
6. the main control board of the air fryer includes power circuit, power circuit conducting, the central processing unit is read
Take the information of the memory cell, and the control signal that air fryer works on, so design are formed according to the information of reading
Be advantageous in that, after air fryer power down is powered again, central processing unit can by read memory cell store up letter
Cease to know the job information before air fryer power down, and form control signal and control heater and motor to continue to complete residue
The progress of work, realize the complete heating cooking process of food.
7. the upper shell of the air fryer is provided with guidance panel, the guidance panel is provided with the input of heating parameters
Button, the main control board are provided with operation panel circuit, and the input button passes through the operation panel circuit and the master
Chip electrical connection is controlled, the signal of the input key-press input is transmitted to main control chip by operation panel circuit, so set
It is advantageous in that, user can be according to the different cultivars of air fryer cooking food, by being manually entered on the guidance panel pair
The heating parameters answered, the parameter signal of input are transmitted to main control chip, central processing unit foundation by the operation panel circuit
The information of reading forms the control signal that corresponding air fryer initially cooks work, and central processing unit again will at interval of time T
The control data of current cooking operation is transferred to memory cell and stored.
8. detector unit, the detection signal of the detector unit are additionally provided with the air fryer upper shell
Transmit to main control chip, so setting is advantageous in that, the detector unit in the air fryer upper shell can be with
The cooking temp of detection air fryer in real time, and the temperature data that detection is obtained is transmitted to main control chip, central processing unit pair
The obtained temperature data control data current with air fryer is detected in real time to be contrasted, and judges whether that needs continue to add
Heat；When being re-energised after air fryer power down, central processing unit is single with reading storage to detecting obtained temperature data in real time
The control data of first memory storage is contrasted, and judges whether heater needs to continue to heat.
9. the memory capacity of the EEPROM is C, wherein 256 bytes≤C≤2048 bytes, the EEPROM so designed
Control data with enough memory space storage air fryer cooking foods, can meet user to machine service life
Primary demand.Work as C>2048 bytes, the memory capacity of the EEPROM become big, but also increase simultaneously air fryer into
This, and the erasable of data can be repeated in the EEPROM, it is not necessary to and very big memory capacity can meet primary demand；
256 bytes>During C, EEPROM memory capacity is less than normal, and data storage is limited, and air fryer stores control data at interval of T
The number increase of flash EEPROM, influence EEPROM service life.
10. the heater is heating tube, heater strip or halide torch, can according to air fryer use environment, generally
Culinary art food materials species and the specifically used demand of user select different heaters.
Brief description of the drawings
Fig. 1 is the overall structure diagram of air fryer described in the utility model；
Fig. 2 is the main control chip structural representation of air fryer described in the utility model；
Fig. 3 is the main control board circuit diagram of air fryer described in the utility model.
It is as follows that each component names are marked in figure：
1. upper shell；2. upper lid；3. lower cover；4. fry basket；5. wind deflector；51. hot blast flabellum；52. air suction fan blade；6. heating
Pipe；7. hot blast outlet；8. main control board；9. cooking cavity；10. motor；11. lower house；12. guidance panel；13. temperature passes
Sensor.
Embodiment
Below in conjunction with drawings and the specific embodiments, the utility model is described in further detail.
Such as Fig. 1, the utility model discloses a kind of air fryer with power-down protection, including housing, motor 10, heat
Wind component, main control board 8, the housing include upper shell 1, lower house 11, fry basket 4 are provided with the lower house 11.It is described
Cooking cavity 9 is provided with lower house 11, the fry basket 4 is positioned in the cooking cavity 9 when working, and the upper shell 1 includes upper lid 2
With lower cover 3, the upper lid 2 and lower cover 3 are the cover body with downward inner chamber, and the lower cover 3 is provided with upward lower cover flange,
The upper lid 2 is fastened on the lower cover flange of lower cover 3, is provided with wind deflector 5 in the upper shell 1, the wind deflector 5 is arranged at institute
The lower section of lower cover 3 is stated, the shape of wind deflector 5 is consistent with the lower cover 3, and the main control board 8 is installed on the motor 10
On the lower cover 3, air suction fan blade 52 is provided between the wind deflector 5 and the lower cover 3, it is outer under the air suction fan blade 52 effect
The cold wind on boundary is inhaled into, and can carry out effective temperature-reducing to main control board 8 and component.The upper lid 2 is covered in the lower cover 3
On, the upper lid 2 and the lower cover 3 form accommodating cavity, and the main control board 8 and motor 10 are respectively positioned in the accommodating cavity.
The hot blast component is located at the lower section of wind deflector 5, and the hot blast component includes heater and hot blast flabellum 51, described in the present embodiment
Heater is heating tube 6, it is possible to understand that, the heater is heater strip or halide torch, can be made according to air fryer
Different heaters is selected with environment, generally culinary art food materials species and the specifically used demand of user.The motor 10 drives
Hot blast flabellum 51 is moved, and hot-fluid caused by heater is blowed in fry basket 4, to be heated to the material in fry basket 4.It is described
Motor 10 includes motor shaft, and the motor shaft passes through the lower cover 3 and wind deflector 5 and the hot blast flabellum 51 and air suction fan blade 52
Connection.The upper shell 1 is provided with hot blast outlet 7, and the cooking cavity 9 and the amount of residual heat in the body clearance can be from
The hot blast outlet 7 is discharged so that heat caused by heating tube 6 can be blown into cooking cavity 9 by the hot blast flabellum 51
It is interior, ensure hot air circulation flowing in pot.
As depicted in figs. 1 and 2, the main control board 8 includes main control chip, and the main control chip produces according to control data
Raw control signal simultaneously controls heating tube 6 and hot blast flabellum 51 and air suction fan blade 52 to work by control signal, the main control chip
Including central processing unit, wherein, the main control chip also includes being used to store the central processing unit at interval of week time
The memory cell of the current control data of phase T transmission, the main control chip is provided with the timer for being used for monitoring period of time T.This
Sample, which is set, to be advantageous in that, provided with power-down protection circuit, in air fryer cooking food, the current heating-up temperature of heating tube 6,
The parameter related to culinary art such as heat time and the rotating speed of hot blast flabellum 51 is transferred to every period of time T by power-down protection circuit
Main control chip, when user extracts fry basket out or externally fed interruption causes power-off, the heating tube 6 and hot blast flabellum 51 of air fryer
It is stopped, when machine is re-energised, central processing unit can effectively read memory cell last time before power down
The heating parameters information of cycle T storage, and form control instruction so that heating tube 6 and hot blast flabellum 51 work on and complete food
The cooking process of thing, so as to reach predetermined culinary art effect；Usual user needs irregular when air fryer cooks work
Extract fry basket 4 out and check that food cooking state or midway carry out feeding operation, air fryer described in the utility model is single by storing
Member stores current computer heating control data every period of time T, can meet these operational requirements of user, when extraction fry basket 4, machine
It is stopped, after fry basket 4 reinserts, reads the control data stored before power down and work on, it is ensured that food cooking
The continuity of process.The power down protection of the air fryer is the control number that current heated tube 6 is stored by memory cell timing
It is factually existing, it is not necessary to the outside zero cross detection circuit of design, can to avoid introducing impulse disturbances, machine cost can also be reduced.
The air fryer provides a kind of new departure that can effectively realize power-down protection, can both meet because inside air fryer
The microswitch of setting is triggered caused power down, can also meet the power down caused by external power source open circuit.5S≤the T≤
60S, the time cycle, which is in this scope, to be advantageous in that, the time cycle of the main control chip transmitting control data of air fryer is T
I.e. the time cycle of the storage control data of memory cell is T, and the power-down protection that also illustrating air fryer has is recovered
The maximum time deviation of control data is T, and T value is 5 ~ 60 seconds, and scope is reasonable, and machine power down protection process is to air fryer
Heating process and food cooking influential effect it is small.The control data includes heat time and heating-up temperature, and so setting is
, can be with by the two parameters because most important two parameters when heat time and heating-up temperature are air fryer cooking foods
Directly heating effect and culinary art mouthfeel of the control with influenceing food materials, smoothly storage can with reading the two parameters for the main control chip
Effectively to realize the power-down protection of air fryer.
As shown in Fig. 2 main control chip includes central processing unit, timer, memory cell, parallel interface and serial line interface,
The memory cell is EEPROM, and memory cell of the EEPROM as air fryer main control chip can be repeatedly erasable, weight
It is multiple to utilize, therefore memory cell service life can be lifted, reduce air fryer maintenance cost；And the EEPROM is used as and deposited
Storage unit, the data of storage are reliable, not easy to be lost, can effectively be read by central processing unit after powered up, fried for the air
Pot provides a kind of new departure that can effectively realize power-down protection, can both meet the fine motion because being set inside air fryer
The caused power down that is triggered is switched, the power down caused by external power source open circuit can also be met.The EEPROM is provided with multiple deposit
Storage area domain, the multiple storage region is used for the control data for storing the central processing unit transmission in turn, different from existing skill
Simply fixation uses some storage region to art, so can greatly lift the service life of memory cell, meets general use
Family can save air fryer and change cost caused by main control chip to the demand of the service life of air fryer.It is described
EEPROM memory capacity is C, wherein 256 bytes≤C≤2048 bytes, the EEPROM so designed has enough storages empty
Between store air fryer cooking food control data, primary demand of the user to machine service life can be met.
As shown in figures 1 and 3, the upper shell 1 is provided with guidance panel 12, and the guidance panel 12 is provided with heating parameters
Input button, the main control board 8 is provided with operation panel circuit, the input button by the operation panel circuit with
Main control chip electrical connection, the signal of the input key-press input are transmitted to main control chip by operation panel circuit, so
Setting is advantageous in that user can pass through the left-hand seat of guidance panel 12 according to the different cultivars of air fryer cooking food
Heating parameters corresponding to dynamic input, the parameter signal of input are transmitted to main control chip, centre by the operation panel circuit
Reason device forms the control signal that corresponding air fryer initially cooks work according to the information read, central processing unit again at interval of
The control data of current cooking operation is transferred to memory cell and stored by time T.Temperature inspection is additionally provided with the upper shell 1
Element is surveyed, detector unit described in the present embodiment is temperature sensor 13, it is possible to understand that, the detector unit can be with
It is thermistor, the detection signal of the detector unit is transmitted to main control chip, and so setting is advantageous in that, positioned at institute
The cooking temp of air fryer can be detected in real time by stating the detector unit 13 in air fryer upper shell 1, and will be detected
To temperature data transmit to main control chip, central processing unit is current to detecting obtained temperature data and air fryer in real time
Control data is contrasted, and judges whether that needs continue to heat；When being re-energised after air fryer power down, central processing
Device contrasts to detecting obtained temperature data in real time with reading the control data of memory cell storage, judges heating tube 6
Whether need to continue to heat.
As shown in figs. 1 and 3, the circuit on main control board 8 includes power circuit, circuit for controlling motor, computer heating control electricity
Road, operation panel circuit, power-down protection circuit, temperature sensing circuit and main control chip, wherein power circuit connect external power source,
Power circuit is electrically connected with circuit for controlling motor, heating control circuit and main control chip and is that these circuits are supplied respectively
Electricity, circuit for controlling motor connection motor 10, main control chip electrically connects with circuit for controlling motor to work for controlled motor 10, heating
Control circuit is connected with heating tube 6, and main control chip is electrically connected with heating control circuit for controlling heating tube 6 to work, operating surface
Plate circuit attended operation panel 12, main control chip electrically connect with operation panel circuit and receive the signal of the transmission of guidance panel 12,
Power-down protection circuit is connected with the microswitch, heating tube 6 and the motor 10 that are set in machine, main control chip and power-down protection circuit
Electrically connect for receiving the current culinary art heating parameters of machine, temperature sensing circuit and temperature sensor 13 every period of time T
Connection, main control chip electrically connect the real time data for receiving temperature sensor 13 with temperature sensing circuit and judge whether to need
Continue to heat.
As shown in Figures 2 and 3, the main control board 8 of the air fryer includes power circuit, power circuit conducting, institute
State the information that central processing unit reads the memory cell, and the control that air fryer works on is formed according to the information of reading
Signal, so designing is advantageous in that, after air fryer power down is powered again, central processing unit can be single by reading storage
The information of first memory storage knows the job information before air fryer power down, and forms control signal control heating tube 6 and motor
10 continue to complete the remaining progress of work, realize the complete heating cooking process of food.
The course of work of the air fryer power down protection is as follows：
The air fryer start, user input the heating parameters of food by guidance panel 12, the air fryer
Main control chip receives heating parameters signal, and control machine carries out the culinary art work of food, while the memory cell of main control chip is every
Every period of time T storage once current computer heating control data, when externally fed occur interrupting or user extract out fry basket 4 trigger it is micro-
Dynamic switch causes machine to be stopped, and heating tube 6 stops heating, and motor 10 stops operating with hot blast flabellum 51, works as externally fed
After recovery or user insert fry basket 4, power circuit recloses, and the central processing unit of main control chip reads the number of memory cell
According to, and control instruction is formed, control heating tube 6 works on hot blast flabellum 51, completes remaining cooking process.
As described above, preferred embodiment only of the present utility model, is not used for limiting reality of the present utility model
Scope is applied, i.e., all equivalent changes and modifications made according to the utility model, is all that the utility model claims scope is covered,
Here no longer illustrate one by one.
Claims (10)
1. a kind of air fryer with power-down protection, including upper shell, lower house, the hot blast group being arranged in upper shell
Part and the cooking container being arranged in lower house, the hot blast component include heater and fan, also set in the upper shell
Main control board and the motor rotated for driving fan are equipped with, the main control board includes main control chip, the master control core
Piece produces control signal according to control data and controls heater and fan work, the main control chip bag by control signal
Include central processing unit, it is characterised in that：When the main control chip also includes being used to store the central processing unit at interval of one
Between the memory cell of current control data transmitted of cycle T, the main control chip, which is provided with, to be used to monitor the timing of period of time T
Device.
2. a kind of air fryer with power-down protection according to claim 1,5 seconds≤T≤60 second.
3. a kind of air fryer with power-down protection according to claim 1, the memory cell is EEPROM.
4. a kind of air fryer with power-down protection according to claim 1, the control data includes heating
Time and heating-up temperature.
5. a kind of air fryer with power-down protection according to claim 3, the EEPROM is provided with multiple deposit
Storage area domain, the multiple storage region are used for the control data for storing the central processing unit transmission in turn.
6. a kind of air fryer with power-down protection according to claim 1, the main control board includes electricity
Source circuit, power circuit conducting, the central processing unit reads the information of the memory cell, and is formed according to the information of reading
The control signal that air fryer works on.
7. a kind of air fryer with power-down protection according to claim 1, the upper shell are provided with operating surface
Plate, the guidance panel are provided with the input button of heating parameters, and the main control board is provided with operation panel circuit, described defeated
Enter button to electrically connect with the main control chip by the operation panel circuit, the signal of the input key-press input passes through operation
Panel circuit is transmitted to main control chip.
8. a kind of air fryer with power-down protection according to claim 1, temperature is additionally provided with the upper shell
Detecting element is spent, the detection signal of the detector unit is transmitted to main control chip.
9. a kind of air fryer with power-down protection according to claim 3, the memory capacity of the EEPROM
For C, wherein 256 bytes≤C≤2048 bytes.
10. a kind of air fryer with power-down protection according to claim 1, the heater is heating
Pipe, heater strip or halide torch.
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| CN201621434560.9U CN206867128U (en) | 2016-12-23 | 2016-12-23 | A kind of air fryer with power-down protection |
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| CN201621434560.9U CN206867128U (en) | 2016-12-23 | 2016-12-23 | A kind of air fryer with power-down protection |
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| US11751722B2 (en) | 2019-02-25 | 2023-09-12 | Sharkninja Operating Llc | Cooking device and components thereof |
| US11051654B2 (en) | 2019-02-25 | 2021-07-06 | Sharkninja Operating Llc | Cooking device and components thereof |
| US11363911B2 (en) | 2019-02-25 | 2022-06-21 | Sharkninja Operating Llc | Cooking device and components thereof |
| US11766152B2 (en) | 2019-02-25 | 2023-09-26 | Sharkninja Operating Llc | Cooking device and components thereof |
| US11147415B2 (en) | 2019-02-25 | 2021-10-19 | Sharkninja Operating Llc | Cooking device and components thereof |
| US11751710B2 (en) | 2019-02-25 | 2023-09-12 | Sharkninja Operating Llc | Guard for cooking system |
| US11033146B2 (en) | 2019-02-25 | 2021-06-15 | Sharkninja Operating Llc | Cooking device and components thereof |
| US11134808B2 (en) | 2020-03-30 | 2021-10-05 | Sharkninja Operating Llc | Cooking device and components thereof |
| US11678765B2 (en) | 2020-03-30 | 2023-06-20 | Sharkninja Operating Llc | Cooking device and components thereof |
| US11647861B2 (en) | 2020-03-30 | 2023-05-16 | Sharkninja Operating Llc | Cooking device and components thereof |
| CN113796748A (en) * | 2020-06-12 | 2021-12-17 | 广东美的生活电器制造有限公司 | Method and device for detecting secondary heating and food processing machine |
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Effective date of registration: 20230512 Address after: Building 2, No. 52, 22nd Street, Baiyang Street, Qiantang New District, Hangzhou City, Zhejiang Province, 310000 Patentee after: Hangzhou Jiuchuang Home Appliances Co.,Ltd. Address before: No. 999, Mei Li Road, Huaiyin District, Ji'nan, Shandong Patentee before: JOYOUNG Co.,Ltd. |