CN112181018A

CN112181018A - Electric cooker and anti-burnt cooking method thereof

Info

Publication number: CN112181018A
Application number: CN202010983065.8A
Authority: CN
Inventors: 朱泽春; 金俊奇; 王翔; 徐胜
Original assignee: Hangzhou Joyoung Household Electrical Appliances Co Ltd
Current assignee: Hangzhou Joyoung Household Electrical Appliances Co Ltd
Priority date: 2020-09-18
Filing date: 2020-09-18
Publication date: 2021-01-05
Anticipated expiration: 2040-09-18
Also published as: CN112181018B

Abstract

The embodiment of the application discloses electric rice cooker and prevent burnt culinary art method thereof, electric rice cooker includes: the anti-overflow device injects air into the inner pot of the electric cooker, the main control unit, the heating device, the temperature sensor arranged on the cover of the electric cooker and the exhaust port communicated with the inner pot to exhaust gas; the method comprises the following steps: starting the anti-overflow device to inject air into the inner pot; the main control unit acquires the temperature change stage of the upper part of the inner pot through a temperature sensor; the temperature change stage comprises a temperature sudden drop sub-stage when the anti-overflow device is started, a temperature stable sub-stage when the anti-overflow device is in a stable working state and a temperature rise sub-stage when the inner pot is prevented from being burnt; the main control unit obtains the residual water amount in the inner pot according to the temperature change conditions of the temperature stabilizing sub-stage and the temperature lifting sub-stage so as to control the working state of the heating device. Through the scheme of the embodiment, the situations that the porridge is cooked dry and burnt due to too long full-power porridge cooking because less water is put are prevented.

Description

Electric cooker and anti-burnt cooking method thereof

Technical Field

The present invention relates to the control technology of cooking equipment, and is especially one kind of electric rice cooker and its burnt preventing cooking method.

Background

At present, the electric cooker needs to cook porridge for a long time, and the main reason is that the porridge is easy to overflow when boiling, so the porridge can not be always in a boiling state, and the time for cooking the porridge is long. In order to realize the purpose of cooking porridge by using quickly, an active exhaust device can be additionally arranged at the top of the rice cooker, and the active exhaust device mainly comprises a fan, a valve capable of being controlled to be opened and closed through a stepping motor and an air inlet channel.

According to the scheme of quickly cooking porridge, because the porridge is always heated at full power and actively exhausted, the evaporation speed of water vapor is high, and when rice water is little, the risk of boiling water to be dry exists. The porridge obtained by the scheme of cooking the porridge regularly becomes very dry and even the bottom of the porridge is burnt.

Disclosure of Invention

The application provides an electric cooker and an anti-burnt cooking method thereof, which can prevent the situations that porridge is boiled dry and burnt due to the fact that water put is less and the porridge is boiled for too long time at full power.

The application provides a method for preventing paste cooking of an electric cooker, which can comprise: the anti-overflow device injects air into the inner pot of the electric cooker, the main control unit, the heating device, the temperature sensor arranged on the cover of the electric cooker and the exhaust port communicated with the inner pot to exhaust gas; the method may include:

starting the anti-overflow device to inject air into the inner pot;

the main control unit acquires the temperature change stage of the upper part of the inner pot through the temperature sensor; the temperature change stage comprises a temperature sudden drop sub-stage when the anti-overflow device is started, a temperature stable sub-stage when the anti-overflow device is in a stable working state and a temperature rise sub-stage when the inner pot is prevented from being burnt;

and the main control unit acquires the residual water amount in the inner pot according to the temperature change conditions of the temperature stabilizing sub-stage and the temperature raising sub-stage so as to control the working state of the heating device.

In an exemplary embodiment of the present application, the starting of the spill prevention device to inject the wind into the inner pot may include:

the main control unit controls the anti-overflow device to provide cold air to the inner pot at a preset first air inlet amount;

the main control unit is through pot upper portion temperature variation in the temperature sensor acquires to compare pot upper portion temperature variation and predetermined temperature variation in with, adjust according to the result of comparison the intake of anti-overflow device to make the wind of infusing and the gaseous equilibrium of combustion gas.

In an exemplary embodiment of the present application, the temperature variation condition may include: temperature change amount and/or temperature change rate.

In an exemplary embodiment of the present application, the obtaining, by the main control unit, the remaining water amount in the inner pot according to the temperature change conditions of the temperature stabilizing sub-phase and the temperature raising sub-phase may include:

comparing the temperature variation with a preset temperature variation threshold;

when the temperature variation is larger than or equal to the temperature variation threshold, determining that the residual water in the boiler reaches a preset water amount; and when the temperature variation is smaller than the temperature variation threshold value, determining that the residual water in the pot does not reach the preset water amount.

In an exemplary embodiment of the present application, the temperature variation threshold may include: 3-5 ℃.

comparing the temperature change rate with a preset temperature change rate threshold value;

when the temperature change rate is larger than or equal to the temperature change rate threshold value, determining that the residual water in the boiler reaches a preset water amount; and when the temperature change rate is smaller than the temperature change rate threshold value, determining that the residual water in the pot does not reach the preset water amount.

In an exemplary embodiment of the present application, the method may further include: and when the residual water amount in the pot is judged to reach the preset water amount, adjusting the subsequent porridge cooking process.

In an exemplary embodiment of the present application, the adjusting of the subsequent congee cooking procedure may include any one of:

controlling the heating device to continue working, and adjusting the heating time length and/or the heating power;

controlling the heating device to stop heating, and controlling the anti-overflow device to stop working; and the number of the first and second groups,

and finishing the cooking process, entering a heat preservation stage, and controlling the anti-overflow device to stop working.

The embodiment of the application also provides an electric cooker, which can comprise: the anti-overflow device is used for injecting air into an inner pot of the electric cooker, and comprises a main control unit, a heating device, a temperature sensor arranged on the cover of the electric cooker, an exhaust port communicated with the inner pot to exhaust gas and an operation interface connected with the main control unit; the operation interface is provided with a plurality of operation function keys, and at least one operation function key corresponds to any one of the anti-burnt cooking methods of the electric cooker.

In an exemplary embodiment of the present application, the temperature sensor is located at a front end of the overfill prevention device.

Compared with the related art, the scheme of the embodiment of the application can comprise the following steps: the electric cooker comprises: the anti-overflow device injects air into the inner pot of the electric cooker, the main control unit, the heating device, the temperature sensor arranged on the cover of the electric cooker and the exhaust port communicated with the inner pot to exhaust gas; the method comprises the following steps: starting the anti-overflow device to inject air into the inner pot; the main control unit acquires the temperature change stage of the upper part of the inner pot through the temperature sensor; the temperature change stage comprises a temperature sudden drop sub-stage when the anti-overflow device is started, a temperature stable sub-stage when the anti-overflow device is in a stable working state and a temperature rise sub-stage when the inner pot is prevented from being burnt; and the main control unit acquires the residual water amount in the inner pot according to the temperature change conditions of the temperature stabilizing sub-stage and the temperature raising sub-stage so as to control the working state of the heating device. Through the scheme of the embodiment, the situations that the porridge is cooked dry and burnt due to too long full-power porridge cooking because less water is put are prevented.

Additional features and advantages of the application will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the application. Other advantages of the present application may be realized and attained by the instrumentalities and combinations particularly pointed out in the specification and the drawings.

Drawings

The accompanying drawings are included to provide an understanding of the present disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the examples serve to explain the principles of the disclosure and not to limit the disclosure.

FIG. 1 is a flow chart of an anti-burnt cooking method of an electric cooker according to the embodiment of the present application;

FIG. 2 is a schematic view of an overfill prevention device of an embodiment of the present application;

FIG. 3 is a schematic view of a temperature variation curve in the congee cooking process of the electric rice cooker of the embodiment of the present application;

FIG. 4 is an exploded view of the structure of the electric cooker in the embodiment of the present application.

Detailed Description

The present application describes embodiments, but the description is illustrative rather than limiting and it will be apparent to those of ordinary skill in the art that many more embodiments and implementations are possible within the scope of the embodiments described herein. Although many possible combinations of features are shown in the drawings and discussed in the detailed description, many other combinations of the disclosed features are possible. Any feature or element of any embodiment may be used in combination with or instead of any other feature or element in any other embodiment, unless expressly limited otherwise.

The present application includes and contemplates combinations of features and elements known to those of ordinary skill in the art. The embodiments, features and elements disclosed in this application may also be combined with any conventional features or elements to form a unique inventive concept as defined by the claims. Any feature or element of any embodiment may also be combined with features or elements from other inventive aspects to form yet another unique inventive aspect, as defined by the claims. Thus, it should be understood that any of the features shown and/or discussed in this application may be implemented alone or in any suitable combination. Accordingly, the embodiments are not limited except as by the appended claims and their equivalents. Furthermore, various modifications and changes may be made within the scope of the appended claims.

Further, in describing representative embodiments, the specification may have presented the method and/or process as a particular sequence of steps. However, to the extent that the method or process does not rely on the particular order of steps set forth herein, the method or process should not be limited to the particular sequence of steps described. Other orders of steps are possible as will be understood by those of ordinary skill in the art. Therefore, the particular order of the steps set forth in the specification should not be construed as limitations on the claims. Further, the claims directed to the method and/or process should not be limited to the performance of their steps in the order written, and one skilled in the art can readily appreciate that the sequences may be varied and still remain within the spirit and scope of the embodiments of the present application.

The application provides a method for preventing paste cooking of an electric cooker, which can comprise: the anti-overflow device 7 for injecting air into the inner pot of the electric cooker, the main control unit, the heating device, the temperature sensor 1 arranged on the cover 8 of the electric cooker and the exhaust port communicated with the inner pot 6 for exhausting gas; as shown in fig. 1, the method may comprise steps S101-S103:

s101, starting the anti-overflow device 7 to inject air into the inner pot;

s102, the main control unit obtains the temperature change stage of the upper part of the inner pot 6 through the temperature sensor 1; the temperature change stage comprises a temperature sudden-drop sub-stage a when the anti-overflow device 7 is started, a temperature stable sub-stage b when the anti-overflow device 7 is in a stable working state, and a temperature rise sub-stage c when the inner pot is prevented from being burnt;

and S103, acquiring the residual water amount in the inner pot 6 by the main control unit according to the temperature change conditions of the temperature stabilizing sub-stage b and the temperature raising sub-stage c so as to control the working state of the heating device.

In the exemplary embodiment of the present application, the determination of the remaining amount of water in the porridge by the temperature change of the top sensor 1 of the rice cooker is realized by the above scheme. The judgment on the residual water amount of the porridge and the consistency of the rice water is realized, and the porridge is not dry; the consistency of the taste of the cooked porridge is improved, and the cooked porridge is not limited by the rice water amount and the manual timing time; the porridge can automatically judge when the porridge is cooked like cooking, and the work is not finished in a countdown mode.

In an exemplary embodiment of the present application, as shown in fig. 2, the overflow prevention device 7 may include a motor 2, a fan 3, a valve 4, and an air intake passage 5; the motor 2 is respectively connected with the main control unit and the fan 3, the fan 3 can be arranged in the air inlet channel 5, and the valve 4 is communicated with the inner space and the outer space of the electric cooker and used for exhausting air from the inner space to the outside.

the main control unit controls the anti-overflow device 7 to provide cold air to the inner pot 6 at a preset first air inlet amount;

the main control unit warp 6 upper portion temperature variation in the pot is obtained to temperature sensor 1 to compare 6 upper portion temperature variation in the pot with preset temperature variation, adjust according to the result of comparison the intake of anti-overflow device to make the wind of injecting and the combustion gas reach the equilibrium.

In an exemplary embodiment of the present application, the cool wind refers to wind having a temperature lower than a preset temperature value with respect to the inner pot temperature.

In an exemplary embodiment of the present application, the method may further include: the main control unit adjusts the air inlet amount of the spill prevention device 7 by adjusting the rotating speed of the fan 3.

In an exemplary embodiment of the present application, after the anti-overflow device is activated, the temperature of the intake air may be detected by the temperature sensor 1; taking the set target inlet air temperature and the detected inlet air temperature as input, and calculating the one-time increment of the output power of the fan through a preset control algorithm; and gradually controlling the fan according to the one-time increment to adjust the air inlet amount of the anti-overflow device so that the air inlet temperature reaches the target air inlet temperature.

In exemplary embodiments of the present application, the control algorithm may include, but is not limited to, any one of: an incremental Proportional Integral Derivative (PID) algorithm, an incremental Proportional Integral (PI) algorithm and an incremental Proportional Derivative (PD) algorithm.

In an exemplary embodiment of the present application, the method may further include: the rotating speed of the fan is adjusted through chopping control or Pulse Width Modulation (PWM) control, so that the air inlet amount of the anti-overflow device 7 is adjusted.

The method may further comprise: the main control unit adjusts the air inlet volume by adjusting the opening size of the valve 4.

In an exemplary embodiment of the present application, as shown in fig. 3, after the overflow prevention device 7 is opened at the time of full power heating, the top temperature is lowered from approximately 90 degrees celsius to more than 70 degrees celsius (i.e., the temperature sudden-lowering sub-phase a) and is maintained at the same temperature at all times, more than 70 degrees celsius (i.e., the temperature plateau sub-phase b). At this time, the water in the pot 6 is vigorously boiled, and the heat and the water vapor taken away by the exhaust gas are kept consistent, so that the top temperature is kept stable. When the water content in the pot is reduced and the consistency of the rice water of the porridge is increased, the evaporation amount of the water is influenced, so that the temperature detected by the top temperature sensor 1 is obviously changed (namely the temperature rise sub-stage c), and the remaining water amount in the pot and the consistency of the rice water can be reversely deduced from the change to reach a certain stage. The rice-water ratio or the residual water amount range at this time can be obtained in advance through experience or experiments, so that in the process of cooking porridge quickly again, when the temperature of the top of the pot changes the same, the current residual water amount can be calculated according to the added rice amount and the pre-stored rice-water ratio, or under the condition that the added rice amount is the same, the current residual water amount can be directly obtained.

In exemplary embodiments of the present application, the temperature variation may include, but is not limited to: temperature change amount and/or temperature change rate.

In the exemplary embodiment of the present application, when the moisture in the porridge is greatly reduced and the rice water is thick, the temperature detected by the temperature sensor at the top of the rice cooker is increased by 3-4 ℃ under the same condition. The change can judge that the water content in the porridge is less and the rice soup is very thick, thereby effectively preventing the porridge from being boiled to be dry.

In the exemplary embodiment of the present application, when the moisture in the porridge is greatly reduced and the rice water is thick, a temperature jump moment occurs in the temperature detected by the temperature sensor at the top of the electric rice cooker under the same condition, and the temperature jump moment can be detected by detecting the temperature change rate, so that it is determined that the amount of water remaining in the pot does not reach the preset amount of water according to the temperature change rate.

controlling the heating device to stop heating, and controlling the anti-overflow device 7 to stop working; and the number of the first and second groups,

and finishing the cooking process, entering a heat preservation stage, and controlling the anti-overflow device 7 to stop working.

In the exemplary embodiment of the present application, when it is detected that the amount of water remaining in the pan has reached the preset amount, which indicates that the moisture in the porridge is greatly reduced and the rice soup has become thick, the subsequent porridge cooking process may be controlled in order to prevent the porridge from being cooked dry or burnt. For example, the heating power is reduced, the heating is stopped, the heat preservation stage is started, or the porridge cooking process is directly finished, after the heating is stopped, the anti-overflow device 7 can be controlled to stop working in order to avoid excessive temperature loss in the pot.

In the exemplary embodiments of the present application, the embodiments of the present application include at least the following advantages:

1. the temperature change detected by the temperature sensor at the top of the pan is taken as a judgment basis, and the production cost of any machine is not increased.

2. Because the porridge is cooked at regular time, the determination of the moisture in the porridge is always a difficult problem in the whole porridge cooking process, and the temperature of the bottom temperature sensor cannot play a role, so that the water content of the cooked porridge is difficult to determine. Can effectual control water content in the congee through this application embodiment scheme, guarantee the uniformity of machine work, make the taste uniformity of congee promote, can not influence final effect because of the water yield that adds how much.

3. According to the embodiment of the application, the porridge cooking is realized by only working at fixed timing time, the residual water amount in the porridge can be judged to determine the follow-up working time, the influence of the rice water amount and the time is avoided, and good porridge with consistent taste can be cooked.

The embodiment of the present application further provides an electric cooker a, as shown in fig. 2 and 4, which may include: the anti-overflow device 7 is used for injecting air into the inner pot 6 of the electric cooker, and comprises a main control unit, a heating device, a temperature sensor 1 arranged on the cover 8 of the electric cooker, an exhaust port communicated with the inner pot 6 for exhausting gas and an operation interface 9 connected with the main control unit; the operation interface 9 is provided with a plurality of operation function keys, and at least one operation function key corresponds to any one of the anti-burnt cooking methods of the electric cooker.

In an exemplary embodiment of the present application, the temperature sensor 1 may be located at a front end of the overflow prevention device 7.

In an exemplary embodiment of the present application, the temperature sensor 1 may be disposed on the fan 3 or on an inner wall of the air intake passage 5.

In an exemplary embodiment of the present application, the rice cooker cover may include a plastic inner cover 81, a detachable cover plate 82, the air outlet and the overflow prevention device 7 are disposed on the plastic inner cover 81, and the detachable cover plate 82 is assembled with the plastic inner cover 81 to form the air intake channel 5 of the overflow prevention device 7.

It will be understood by those of ordinary skill in the art that all or some of the steps of the methods, systems, functional modules/units in the devices disclosed above may be implemented as software, firmware, hardware, and suitable combinations thereof. In a hardware implementation, the division between functional modules/units mentioned in the above description does not necessarily correspond to the division of physical components; for example, one physical component may have multiple functions, or one function or step may be performed by several physical components in cooperation. Some or all of the components may be implemented as software executed by a processor, such as a digital signal processor or microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit. Such software may be distributed on computer readable media, which may include computer storage media (or non-transitory media) and communication media (or transitory media). The term computer storage media includes volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data, as is well known to those of ordinary skill in the art. Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, Digital Versatile Disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other medium which can be used to store the desired information and which can accessed by a computer. In addition, communication media typically embodies computer readable instructions, data structures, program modules or other data in a modulated data signal such as a carrier wave or other transport mechanism and includes any information delivery media as known to those skilled in the art.

Claims

1. An anti-burnt cooking method of an electric cooker is characterized in that the electric cooker comprises: the anti-overflow device injects air into the inner pot of the electric cooker, the main control unit, the heating device, the temperature sensor arranged on the cover of the electric cooker and the exhaust port communicated with the inner pot to exhaust gas; the method comprises the following steps:

starting the anti-overflow device to inject air into the inner pot;

2. The rice cooker anti-burnt cooking method according to claim 1, wherein the starting of the anti-overflow device to inject air into the inner pot comprises:

3. The anti-burnt cooking method for the electric cooker as claimed in claim 1, wherein the temperature variation condition comprises: temperature change amount and/or temperature change rate.

4. The rice cooker anti-burnt cooking method of claim 3, wherein the main control unit obtains the residual water amount in the inner pot according to the temperature change conditions of the temperature stabilizing sub-stage and the temperature raising sub-stage, and comprises:

5. The electric rice cooker anti-burnt cooking method as claimed in claim 4, wherein the temperature variation threshold comprises: 3-5 ℃.

6. The rice cooker anti-burnt cooking method of claim 3, wherein the main control unit obtains the residual water amount in the inner pot according to the temperature change conditions of the temperature stabilizing sub-stage and the temperature raising sub-stage, and comprises:

7. The rice cooker anti-burnt cooking method of claim 4 or 6, wherein the method further comprises: and when the residual water amount in the pot is judged to reach the preset water amount, adjusting the subsequent porridge cooking process.

8. The rice cooker anti-paste cooking method according to claim 7, wherein the adjustment of the subsequent porridge cooking process comprises any one of the following steps:

9. An electric rice cooker, characterized in that, comprising: the anti-overflow device is used for injecting air into an inner pot of the electric cooker, and comprises a main control unit, a heating device, a temperature sensor arranged on the cover of the electric cooker, an exhaust port communicated with the inner pot to exhaust gas and an operation interface connected with the main control unit; the operation interface is provided with a plurality of operation function keys, and at least one operation function key corresponds to the anti-burnt cooking method of the electric cooker as claimed in any one of claims 1 to 8.

10. The rice cooker of claim 9 wherein said temperature sensor is located at a front end of said overflow prevention device.