CN116406965A

CN116406965A - Control method of air fryer

Info

Publication number: CN116406965A
Application number: CN202111651205.2A
Authority: CN
Inventors: 朱泽春; 毛树海
Original assignee: Joyoung Co Ltd
Current assignee: Joyoung Co Ltd
Priority date: 2021-12-30
Filing date: 2021-12-30
Publication date: 2023-07-11

Abstract

The invention relates to a control method of an air fryer, which comprises a base, a processing component, a hot air component and a steam component, wherein the base defines a working space, the processing component is arranged in the working space, the processing component is used for placing food, the hot air component comprises a heating piece and a hot air fan, the heating piece heats the working space, the hot air fan circulates hot air in the working space and heats the food, and the steam component generates and injects steam into the working space, wherein the control method comprises the following steps: a steam preparation stage, wherein current altitude information of the air fryer is acquired in the steam preparation stage; and in the steam generation stage, according to the corresponding altitude information, acquiring a steam heating factor of the steam component, and controlling the steam component to generate steam according to the steam heating factor and injecting the steam into the working space.

Description

Control method of air fryer

Technical Field

The invention relates to the field of food processing, in particular to a control method suitable for an air fryer with steam.

Background

Air fryers are used by more and more consumers, and because the air is used as a carrier of heat to process food materials, the air fryers are greatly different from the original deep-oil fryers, and the oil content in food can be effectively reduced, so that healthy diet is provided for people. However, the conventional air fryer only depends on hot air to cook food materials, and although the aim of reducing oil is fulfilled, the food materials are not fresh in taste, especially meat food, in the long-time baking process, due to the influence of air heat transfer and heat radiation, water in the food is less and less along with the baking temperature and time extension, so that the taste of the food is dry, the meat is harder than firewood, and meanwhile, the surface of the food materials is excessively baked but not cooked in the food materials due to high heating degree for a long time, and the cooking effect of the food materials is affected.

In the prior art, as in patent number CN107105936a, a food preparation method based on an air fryer is disclosed, although tenderness or crispness of food can be improved to some extent by adding steam injection treatment before performing air-frying cooking. However, the steam generation control is simple and rough, so that the consistency of products is poor, and especially in areas with different altitudes, the steam temperature can be different due to the different altitudes, and the phenomenon of food incoordination in high-altitude areas is easy to occur. In addition, when the steam function is used, the water consumption of some steam functions is larger, and the air fryer is smaller in self-contained water tank, so that the cruising ability of the air fryer is poor, and the cooking effect under certain functions is poor.

Disclosure of Invention

In order to solve the technical problems, the invention provides a control method suitable for an air fryer with a steam function, which is used for correspondingly controlling different altitudes by identifying the altitudes so as to ensure the effect of food cooking at the different altitudes.

The invention is realized by the following modes: a control method of an air fryer, the air fryer comprising a base, a processing assembly, a hot air assembly and a steam assembly, the base defining a working space, the processing assembly being disposed in the working space, the processing assembly being for holding food, the hot air assembly comprising a heating element and a hot air fan, the heating element heating the working space, the hot air fan circulating hot air in the working space and heating the food, the steam assembly generating and injecting steam into the working space, wherein the control method comprises:

a steam preparation stage, wherein current altitude information of the air fryer is acquired in the steam preparation stage;

and in the steam generation stage, according to the corresponding altitude information, acquiring a steam heating factor of the steam component, and controlling the steam component to generate steam according to the steam heating factor and injecting the steam into the working space.

The steam preparation stage is set, and the elevation position information of the current air fryer is acquired in the stage, so that the corresponding elevation boiling point temperature and altitude are also known, the steam assembly can be reasonably controlled in the specific steam generation stage, steam can be quickly and stably generated, better steam effect and food materials are facilitated, and meanwhile transition water consumption caused by excessive steam is avoided.

Preferably, the air fryer comprises a temperature detection device, in the steam preparation stage, the heating piece and the steam assembly work simultaneously, heating is stopped when the heating piece is heated to a temperature Tpb, the steam assembly continues to be heated to the temperature Tpa and then continues to be heated for a period of time Ta, and current altitude information is acquired according to an average temperature Tpe in the heating period of time Ta.

In the steam preparation stage, the heating element and the steam component work simultaneously, so that the preheating can be performed more quickly, the current altitude information can be obtained quickly, and the steam component can be controlled better. The heating piece and the steam component preheat a temperature at the same time, and the steam component is used for continuously increasing the temperature, so that the accuracy of altitude acquisition is ensured while the rapid preheating is realized. The judgment and determination of the altitude due to the heating of the heating element are avoided.

Preferably, tpb < Tba, and 25 ℃ < Tpb < 80 ℃,50 ℃ < Tpa < 98 ℃.

The altitude of living of human beings is generally not more than 6000m, and the corresponding altitude boiling point temperature is about 80 ℃, so that the temperature of the heating element is set to be lower than the temperature, which is beneficial to reducing the influence of the heating element on the altitude judgment, because the altitude judgment is mainly determined according to the boiling point temperature.

Preferably, ta is less than or equal to 10 seconds and less than or equal to 60 seconds

The accuracy of the elevation boiling point temperature is further improved through maintenance for a certain time, and inaccurate information caused by too short sampling period is avoided.

Preferably, in the steam generation stage, a pre-stored heating factor Pa of the steam component is obtained, a current grid voltage factor Vi is detected, a corresponding adjustment coefficient K is obtained according to the altitude information, and the steam heating factor Pc of the steam component is: pc=k (Pa/Vi).

The pre-stored heating factors are the heating factors of the steam assembly working set by the program, and the pre-stored heating factors are matched differently according to different functions and at different corresponding stages so as to meet the requirement that the steam assembly outputs steam more in line with the food processing stage. The power grid voltage influences the heating power condition of the steam component, the altitude information influences the steam boiling point temperature, and therefore the steam heating factor of the steam component is obtained through the prestored heating factor and the power grid voltage factor combined with the altitude corresponding adjustment coefficient, so that the steam output of the steam component is controlled more accurately, the steam acted on food materials is consistent at different altitudes and voltages, the steam cooking effect is guaranteed, and the user experience is improved.

Preferably, the altitude information comprises an altitude boiling point temperature Tpc, and the heating element is controlled to perform compensation heating according to the temperature in the working space in the steam generation stage.

Due to the influence of the altitude, although the output of steam can be effectively controlled through the steam heating factors, due to different steam temperatures, certain defects still exist on the effect of food processing, and the influence of the altitude on the steam temperature can be eliminated by performing temperature compensation heating on the heating element in the steam generation stage, so that the steam temperatures at different altitudes can be further ensured to meet the requirements of food, and the problem of poor cooking effect of the food caused by insufficient steam temperature in high-altitude areas is avoided.

Preferably, the starting temperature of the heating element when the heating element starts the compensation heating is Tpd, tpc-5 ℃ is less than or equal to Tpd is less than or equal to tpc+2 ℃, and the closing temperature of the heating element when the heating element stops the compensation heating is Tpf, tpf is less than or equal to 105 DEG C

By setting the heating element on temperature and the heating element off temperature, the heating compensation is determined when to be performed through the heating element, firstly, the influence of the advanced temperature compensation on steam generation is avoided, and secondly, the influence of the elimination of the altitude generation is ensured, so that the temperature in the working space is maintained at 105 ℃. Ensures that the cooking effect of the food materials is basically consistent.

Preferably, the heating factor of the heating element in the steam generation stage is obtained according to the steam heating factor of the steam assembly

The factor of the heating element in the compensation heating process is converted through the steam heating factor, so that the heating element and the steam component can be better matched, steam transition overflow caused by too fast heating of the heating element is avoided, and heating compensation of the steam can be avoided due to too slow heating of the heating element.

Preferably, the steam heating factor Pc of the steam assembly is detected and obtained as a grid voltage factor Vi, and the heating factor of the heating element in the steam generation stage is pd=pc/Vi. The influence of the power grid voltage fluctuation on heating compensation is reduced by specifically combining the power grid voltage factor, and the consistency of food cooking is further ensured.

Preferably, the current grid voltage is V, and the current grid voltage factor is vi= (v×v)/(220×200).

Because the heating control is power, the heating device is a resistive load, and the power and the voltage are square, the electric factors of the power grid are matched through the corresponding relation between the square of the voltage, and the influence of the electric factors on the power control is reduced.

The beneficial effects of the invention are as follows: the steam preparation stage is set, and the elevation position information of the current air fryer is acquired in the stage, so that the corresponding elevation boiling point temperature and altitude are also known, the steam assembly can be reasonably controlled in the specific steam generation stage, steam can be quickly and stably generated, better steam effect and food materials are facilitated, and meanwhile transition water consumption caused by excessive steam is avoided.

Drawings

FIG. 1 is a schematic diagram of an air fryer implementing the control method of the present invention.

The corresponding designations in the figures are as follows:

1. a machine head; 2. a base; 31. a motor; 32. a hot air fan; 33. a heating member; 4. a working space; 41. a fryer; 42. a fry basket; 43. a steam generator; 44. and (5) a pipeline.

Detailed Description

In order to more clearly illustrate the general concepts of the present application, a detailed description is provided below by way of example in connection with the accompanying drawings.

As shown in fig. 1, the air fryer capable of realizing the control method of the invention comprises a machine base 2 and a machine head 1, wherein the machine head 1 is hinged with the machine base 2, the machine head 1 and the machine base 2 are encircled to form a working space 4, a processing component is arranged in the working space 4, the processing component comprises a fryer 41 and a fryer basket 42 which are arranged in the working space 4, the fryer basket 42 is arranged in the fryer 41, a gap is reserved between the fryer basket 42 and the bottom wall of the fryer 41 for air flow, so that processing can be completed better, and food materials for cooking processing are preferably arranged on the fryer basket 42. The machine head 1 is provided with a hot air assembly, the hot air assembly is positioned above the fryer 41, the hot air assembly comprises a motor 31, a hot air fan 32 and a heating element 33, the motor 31 drives the hot air fan 32 to rotate, air blown by the hot air fan 32 flows through the heating element 33 to form heated hot air, the heated hot air flows to the fryer 41 further, and finally, food materials placed in the fryer 41 are cooked. A steam assembly is arranged in the base 2 and comprises a steam generator 43 and a pipeline 44, wherein the steam generator 43 generates steam and transmits the steam into the fryer 41 through the pipeline 44. Thus, the air fryer can realize air frying work when the hot air component works, can realize a steam cooking mode when the steam component works, and can also realize steam baking by working simultaneously. It will of course be appreciated that the air fryer capable of implementing the control method of the invention is not limited to the above-described solution, such as the prior art air fryers of one-piece construction, with the fryer being housed within the body from the side wall of the body; or an air fryer with a machine head and a machine base separated can achieve the aim of the invention. Meanwhile, the hot air component is not necessarily arranged above the fryer, can be arranged at the side or below the fryer, realizes hot air circulation through a fan and is injected into the fryer, and the steam component is not necessarily provided with a steam generator, and can be realized by directly generating steam in a working space and injecting the steam into the fryer.

Preferably, the hot air component is located above the working space, the air inlet position of the steam component is located below the working space, steam enters the working space from below and naturally rises through the food material to cook the food material, and the hot air component drives hot air to enable the working space to circulate and completely surround the food material.

The control method comprises the following steps:

Here, the steam preparation stage and the steam generation stage may be the functions of steam cooking, that is, steaming the food material, or steaming and baking the food material for a predetermined period of time.

In this embodiment, the air fryer includes a temperature detecting device, in the steam preparing stage, the heating element and the steam assembly work simultaneously, heating is stopped when the heating element is heated to a temperature Tpb, the steam assembly continues to be heated to the temperature Tpa and then continues to be heated for a period of time Ta, and current altitude information is obtained according to an average temperature Tpe in the heating period of time Ta.

That is, the operating temperature of the air fryer is detected by the temperature detecting means, the altitude information is determined based on the temperature, and since the altitude affects the boiling point temperature of water, the determination of the altitude can be achieved by the judgment of the boiling point temperature of steam. Of course, the altitude information may be determined by other means, such as an altitude detection device, a pressure sensor, and the like.

Specifically, in the present embodiment, in the steam preparation stage, the steam generator and the heating member are controlled to operate simultaneously, so as to achieve the purpose of rapid temperature rise, and the heating member stops heating when heating to the temperature Tpb, and only the steam generator is kept to continue heating to the temperature Tpa with constant power. In this process, the temperature of Tpb is in the range of 25℃to 80℃and the optimum value is in the range of 55℃to 70℃while the temperature of Tpa is in the range of 50℃to 98℃and preferably in the range of 75℃to 90 ℃.

The altitude of living of human beings is generally not more than 6000m, and the corresponding altitude boiling point temperature is about 80 ℃, so that the temperature of the heating element is set to be lower than the temperature, which is beneficial to reducing the influence of the heating element on the altitude judgment, because the altitude judgment is mainly determined according to the boiling point temperature. In order to prevent the heating element from heating to be over-temperature, so that altitude boiling point temperature information cannot be acquired, tpb is less than Tpa, and in order to further reduce temperature overshoot, so that Tpa-Tpb is more than or equal to 10 ℃. For this reason, in this embodiment, tpb is selected to be 65 ℃ and Tpa is selected to be 80 ℃.

And after the temperature reaches Tpa, continuously controlling the steam generator to heat for a certain time Ta, periodically collecting the temperature in the period of Ta, and calculating the average temperature of the gas, and taking the average temperature of the gas as the altitude boiling point temperature to identify altitude information. Ta is more than or equal to 10 seconds and less than or equal to 120 seconds. Since the steam generator is heated to Tpa at a relatively high temperature, and is approaching the elevation boiling point temperature, but the elevation temperature cannot be determined to be obtained, the steam generator needs to be heated for a certain time, and the temperature approaches the elevation boiling point temperature infinitely, and the elevation information is obtained more accurately by collecting data and taking an average value. Specifically, in this embodiment, ta is maintained at 60 seconds, and the temperature is collected every second, the trend of temperature change is determined, and when the trend is gentle, 8 or more sets of temperature data are continuously collected to perform averaging, so as to obtain the altitude boiling point temperature, and determine altitude information.

In the steam generation stage, a pre-stored heating factor Pa of the steam component is obtained, a current grid voltage factor Vi is detected, a corresponding adjustment coefficient K is obtained according to the altitude information, and the steam heating factor Pc of the steam component is: pc=k (Pa/Vi).

In the embodiment process, firstly, judging whether the functional stage of the air fryer needs to start a steam generator to heat to generate steam to act on food materials. If steam is required to act on the food material, the steam generation phase is started. At start-up, according to the functional phase, a pre-stored heating factor Pa is obtained, which corresponds to the heating power or heating mode of the steam generator at standard altitude, which exists in a constant form, for example, half-power operation is required, that is, 50% of the rated power of the steam generator is required to operate, the heating cycle period of the steam generator is 30 seconds, the step is 600 steps, and the constant is 300. And acquiring a corresponding adjustment coefficient K according to altitude information, wherein the value of the K can be set in advance according to the altitude, and the corresponding setting is adjusted according to the characteristics of the product. Alternatively, the coefficients may be set according to the altitude range, the higher the altitude should be, the greater the coefficient. The value range of the coefficient K from the altitude of-1000 m to 1000m is 0.05 to 0.35 times, optimally 0.2 times, and the increment of each 1000m is 0.01 to 0.15, optimally 0.05 times. I.e. altitude-1000 m to 1000m interval, k=0.2; between altitude 1000m and 2000m, k=0.25, and so on for every 1000m elevation, the coefficient K increases by a factor of 0.05. The corresponding steam heating factor is pc=k×pa.

Of course, since the grid voltage also affects the power of the steam generator, in order to better perform the control of the steam generator, the grid voltage is obtained in time in the steam generation stage, the grid voltage factor Vi is obtained according to the grid voltage, the steam heating factor is adjusted according to the grid voltage factor Vi, and pc=k (Pa/Vi). Here, the power grid voltage factor may be obtained directly through voltage comparison, that is, the proportional relationship between the current voltage V and the standard voltage 220V may be obtained through voltage square. The coefficient obtained according to square is more reasonable and accurate, because the heating devices are all resistive loads, the relationship between the power and the voltage is square, that is, the current grid voltage is V, and the current grid voltage factor is vi= (v×v)/(220×200), so that the 220V voltage factor is 1, and the voltage factor under 198V is 0.9, and the voltage factor under 242V is 1.21. In the present embodiment, the determination of the steam heating factor is performed with a constant, but may be a specific power to be set.

As an improvement, further, the altitude information comprises an altitude boiling point temperature Tpc, and the heating element is controlled to perform compensation heating according to the temperature in the working space in the steam generation stage.

Specifically, the starting temperature of the heating element when the heating element starts to perform compensation heating is Tpd, tpc-5 ℃ is less than or equal to Tpd is less than or equal to tpc+2 ℃, and the closing temperature of the heating element when the heating element stops to perform compensation heating is Tpf, tpf is less than or equal to 105 DEG C

By setting the heating element on temperature and the heating element off temperature, the heating compensation is determined when to be performed through the heating element, firstly, the influence of the advanced temperature compensation on steam generation is avoided, and secondly, the influence of the elimination of the altitude generation is ensured, so that the temperature in the working space is maintained at 105 ℃. Ensures that the cooking effect of the food materials is basically consistent. Thirdly, the steam can be kept in a slightly overheated state, so that the effect of the steam on food materials is facilitated, and the effect of food materials drying due to overhigh temperature is avoided. The output power is ensured to be consistent at any time, which means that the amount of water volatilized into steam is basically consistent, meanwhile, the temperature is controlled to be 105 ℃, and the product cannot cause inconsistent food cooking effect due to the influence of power and temperature. The time that a water tank water can be used in the customer's home is ensured to be basically consistent.

Of course, in this process, the heating factor of the heating element needs to be adjusted to match the steam generator, and therefore, the heating factor of the heating element in the steam generation stage is obtained according to the steam heating factor.

Specifically, the steam heating factor Pc of the steam assembly is detected and obtained, and the grid voltage factor Vi, and the heating factor of the heating element in the steam generation stage is pd=pc/Vi. The influence of the power grid voltage fluctuation on heating compensation is reduced by specifically combining the power grid voltage factor, and the consistency of food cooking is further ensured.

Therefore, in the steam generation stage, namely the stage of heating food by steam, 20% -40% of heat energy is provided by the heating element, so that the consumption of steam is reduced, the requirement on the volume of the water tank is further reduced, or the duration of the product is increased under the same volume. And meanwhile, as the steam output is reduced, the water vapor pollution to the space environment is reduced.

Specifically, in this embodiment, in order to facilitate taking out the food material after the steam food material treatment, or not to affect the subsequent food material treatment, a steam elimination scheme may be used to eliminate steam around the food material. After stopping steam generation, the fan is started to work, meanwhile, the heating part is kept to work, the heating part can heat the air pressure, steam outflow is quickened, the flow of residual steam can be increased by the fan work, and meanwhile, the heating is kept without affecting the food material outlet temperature due to the fact that steam is not discharged.

Specifically, in this embodiment, before the steam generator starts to operate, the fan may be started to operate for 3s, so as to eliminate whistle caused by the surge of air pressure. When the heating element is started to heat, the steam pressure can expand instantaneously due to heating, so that whistle is generated at the steam outlet, part of steam is discharged by blowing the fan for 3S, the noise can be eliminated, and the optimal starting time of the fan is 3S in advance and can be set to be 1-10S.

Of course, in order to implement the above control method, the air fryer also needs a certain support of a control circuit, such as a power supply circuit, a heating element driving circuit, a steam generator driving circuit, a fan driving circuit, a temperature sensor detecting circuit, a control chip MCU, a grid voltage detecting circuit, a dry burning detecting circuit, etc. The specific circuits can select the conventional circuit mode according to the actual situation, and the detailed description is omitted again.

The foregoing description is only illustrative of the preferred embodiments of the present invention and is not intended to limit the scope of the invention, i.e. all equivalent changes and modifications that may be made in accordance with the present invention are covered by the appended claims, which are not intended to be construed as limiting.

Claims

1. A control method of an air fryer, the air fryer including a base, a processing assembly, a hot air assembly and a steam assembly, the base defining a working space, the processing assembly being disposed in the working space, the processing assembly being used for placing food, the hot air assembly including a heating element and a hot air fan, the heating element heating the working space, the hot air fan circulating hot air in the working space and heating the food, the steam assembly generating and injecting steam into the working space, the control method comprising:

2. The control method of an air fryer according to claim 1, wherein said air fryer includes a temperature detecting means, said heating member is operated simultaneously with said steam assembly in said steam preparing stage, said heating member stops heating when heated to a temperature Tpb, said steam assembly continues heating to a temperature Tpa and then continues heating for a period of time Ta, and current elevation information is obtained based on an average temperature Tpe within the heating period of time Ta.

3. The method of controlling an air fryer according to claim 2, wherein Tpb < Tba, and 25 ℃ < Tpb < 95 ℃,50 ℃ < Tpa < 98 ℃.

4. The method of controlling an air fryer according to claim 2, wherein 10 seconds or less Ta or less 120 seconds.

5. The control method of an air fryer according to claim 1, wherein in a steam generation phase, a pre-stored heating factor Pa of said steam assembly is obtained, a current grid voltage factor Vi is detected, a corresponding adjustment factor K is obtained according to said altitude information, and said steam heating factor of said steam assembly is:

Pc＝K*(Pa/Vi)。

6. the method of controlling an air fryer according to claim 1, wherein said elevation information includes an elevation boiling point temperature Tpc, and said heating element is controlled to perform compensation heating according to a temperature in said working space during said steam generating stage.

7. The method of claim 6, wherein the heating element is turned on at a temperature Tpd of-5 ℃ tpd+2 ℃ and the heating element is turned off at a temperature Tpf of 105 ℃ when the heating element starts the complementary heating.

8. The method of controlling an air fryer according to claim 6 wherein said heating element heating factor during a steam generating phase is obtained based on a steam heating factor of said steam assembly.

9. The control method of air fryer according to claim 8, wherein the steam heating factor Pc of the steam assembly is detected and obtained as a grid voltage factor Vi, and the heating factor of said heating member during the steam generation phase is Pd = Pc/Vi.

10. The method of claim 5 or 9, wherein the front grid voltage is V and the current grid voltage factor is vi= (V x V)/(220 x 200).