CN107045302B - Food cooking method of food processor and circuit for detecting power-down time - Google Patents
Food cooking method of food processor and circuit for detecting power-down time Download PDFInfo
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- 235000013305 food Nutrition 0.000 title claims abstract description 156
- 238000010411 cooking Methods 0.000 title claims abstract description 85
- 238000000034 method Methods 0.000 title claims abstract description 59
- 230000008569 process Effects 0.000 claims description 26
- 238000010438 heat treatment Methods 0.000 claims description 24
- 239000003990 capacitor Substances 0.000 claims description 20
- 238000001514 detection method Methods 0.000 claims description 9
- 238000003672 processing method Methods 0.000 claims description 2
- 238000013021 overheating Methods 0.000 abstract description 5
- 230000017525 heat dissipation Effects 0.000 abstract description 3
- 239000000463 material Substances 0.000 description 8
- 238000002360 preparation method Methods 0.000 description 7
- 238000003756 stirring Methods 0.000 description 5
- 230000001960 triggered effect Effects 0.000 description 5
- 238000012545 processing Methods 0.000 description 4
- 235000010469 Glycine max Nutrition 0.000 description 3
- 244000068988 Glycine max Species 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 239000002002 slurry Substances 0.000 description 3
- 235000013322 soy milk Nutrition 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000010298 pulverizing process Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000009775 high-speed stirring Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 235000013372 meat Nutrition 0.000 description 1
- 235000013336 milk Nutrition 0.000 description 1
- 239000008267 milk Substances 0.000 description 1
- 210000004080 milk Anatomy 0.000 description 1
- 235000006180 nutrition needs Nutrition 0.000 description 1
- 238000004537 pulping Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0423—Input/output
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/26—Pc applications
- G05B2219/2643—Oven, cooking
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- Automation & Control Theory (AREA)
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Abstract
The invention provides a food cooking method of a food cooking machine. The food cooking method comprises the following steps: step 1, powering on the food processor; step 2, detecting the time T from the last power failure; step 3, judging whether the time T is less than a threshold value T1, if T is less than T1, turning to step 4, otherwise, turning to step 5; step 4, keeping the standby state for a waiting time T2, and cooking food; step 5, cooking food; and 6, finishing cooking, and powering down the food processor. The food cooking method of the food cooking machine provided by the invention can ensure the heat dissipation time of the motor, on one hand, the whipping performance can not be reduced due to overheating of the motor, on the other hand, the service life of the motor can be protected, and the safety of the food cooking machine is improved.
Description
Technical Field
The invention relates to the field of food cooking, in particular to a food cooking method of a food cooking machine and a circuit for detecting power failure time.
Background
With the improvement of living standard of people, the requirement on food quality is higher and higher. Therefore, food processors with whipping functions, such as soymilk makers, which can meet the daily nutritional needs of people, particularly the pursuit of healthy and high-quality foods and meet the requirements of functions such as convenience, balance, safety, health, delicious taste, and the like, appear on the market in large numbers. Simultaneously, in order to realize comparatively abundant whipping, realize functions such as broken wall, correct grinding, food processor is more and more adopts high-power motor to carry out high-speed whipping. And a heating device is adopted so as to heat the food materials in the food processor and even cook the food materials for a long time. This results in the temperature of the motor possibly rising continuously with the processing of the food, and thus, undesirable situations such as excessive rotation speed leading to slurry overflow, reduced motor life, etc. often occur. These phenomena occur because the motor includes an electromagnetic coil and a permanent magnet. When the motor continuously works, the temperature of the permanent magnet is increased, the magnetism is weakened, and finally the situations of slurry overflow, the service life of the motor is reduced and the like occur.
In response to this situation, manufacturers have begun to take measures to avoid overheating of the motor in order to improve the safety and longevity of food processors. The main flow mode mainly comprises the steps of reducing the rotating speed of a motor; the motor is allowed to cool down when the temperature of the motor is too high, rather than immediately starting to run. The former method requires equipment for adjusting the rotation speed of the motor, and is relatively high in cost. The latter method of cooling the motor in advance is widely used. However, the current food cooking method capable of cooling the motor in advance has many problems, for example, the food cooking machine is complicated in structure, the production cost is increased, and the reliability is also reduced by disposing a temperature sensor, and disposing a crystal oscillator timer, a phase-locked loop timer, and the like having an independent built-in power supply drive. And the built-in power supply also needs to replace the battery regularly, and the maintenance is more tedious. Therefore, it is necessary to provide a food cooking method and a circuit for detecting power-down time, which can not only prevent the motor from overheating, but also make the food cooking machine simple in structure, reliable and easy to maintain.
Disclosure of Invention
The invention aims to provide a food cooking method and a circuit for detecting power-down time, which can prevent a motor from being overheated, and can ensure that a food cooking machine has simple structure, good reliability and easy maintenance.
In order to solve the technical problem, the invention provides a food cooking method of a food cooking machine, which comprises the following steps:
step 1, electrifying the food processor;
step 2, detecting the time T from the last power failure;
step 3, judging whether the time T is less than a threshold value T1, if T is less than T1, turning to step 4, otherwise, turning to step 5;
step 4, keeping the standby state for a waiting time T2, and cooking food;
step 5, cooking food;
and 6, finishing cooking, and powering off the food processor.
According to at least one embodiment of the present invention, the step of cooking food in step 5 has a variety of different flows;
before the food cooking step is started, according to the selection of a user, the food cooking step is determined to be one of a plurality of processes.
According to at least one embodiment of the present invention, the T2 in the step 4 of the current operation is determined according to the flow in the step 5 of the last operation of the food cooking.
According to at least one embodiment of the present invention, the method for determining the T2 in the step 4 of the current operation according to the flow in the step 5 of the last operation of the food cooking is to determine the T2 in the step 4 of the current operation according to whether the heating process is included in the flow in the step 5 of the last operation of the food cooking.
According to at least one embodiment of the present invention, if it is determined that the heating process is not included in the flow in step 5 during the last operation of the food cooking, the T2 in step 4 during the current operation is set to zero;
if it is determined that the heating process is included in the flow in step 5 during the last operation of the food cooking, the T2 in step 4 during the current operation is set to be a preset time length.
According to at least one embodiment of the present invention, the step 4 is preceded by a step of determining whether the flow in the step 5 includes a heating process during the last operation of the food cooking;
if the flow in the step 5 does not include the heating process when the food cooking is operated last time, the step 5 is executed;
if the flow in step 5 includes a heating process during the last run of the food, go to step 4.
According to at least one embodiment of the invention, the threshold T1 may be set to 10-30 minutes; the preset time period of the T2 is 10-30 minutes.
In order to solve at least a part of technical problems of the present invention, the present invention further provides a circuit for detecting a power-down time, which is suitable for the food processing method of the food processor according to claim 1, wherein: one end of a first resistor is connected with a power supply, the other end of the first resistor is respectively connected with one end of a second resistor and the anode of a first diode, the other end of the second resistor is connected with a detection pin of the singlechip, a third resistor is connected with a first capacitor in parallel, the anode of the first capacitor is connected with the cathode of the first diode, and the cathode of the first capacitor is grounded;
when the power supply is powered on again after power failure, the detection pin of the single chip microcomputer detects the voltage at the joint of the first resistor and the second resistor, and the time T from the last power failure is calculated according to the voltage at the joint of the first resistor and the second resistor.
According to at least one embodiment of the invention, the voltage value of the power supply is 5V, the maximum operating voltage of the first capacitor is 16V, and the capacitance is 220 uF.
According to at least one embodiment of the present invention, the first resistor has a resistance of 2M Ω, the first resistor has a resistance of 1K Ω, and the third resistor has a resistance of 2M Ω.
The food cooking method of the food cooking machine provided by the invention can ensure the heat dissipation time of the motor, on one hand, the whipping performance can not be reduced due to overheating of the motor, on the other hand, the service life of the motor can be protected, and the safety of the food cooking machine is improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principle of the invention. In the drawings:
fig. 1 shows a flow diagram of one embodiment of the food preparation method of the present invention.
Fig. 2 shows a flow chart of another embodiment of the food cooking method of the present invention.
Fig. 3 shows a flow chart of yet another embodiment of the food cooking method of the present invention. Fig. 4 shows a circuit diagram of a circuit for detecting power-down time corresponding to the food cooking method of the present invention.
Detailed Description
Embodiments of the present invention will now be described in detail with reference to the accompanying drawings. Wherever possible, the same reference numbers will be used throughout the drawings to refer to the same or like parts. Further, although the terms used in the present invention are selected from publicly known and used terms, some of the terms mentioned in the description of the present invention may be selected by the applicant at his or her discretion, the detailed meanings of which are described in relevant parts of the description herein. Furthermore, it is required that the present invention is understood, not simply by the actual terms used but by the meaning of each term lying within.
The existing food processor generally comprises a machine head and a cup body, and the process of processing food by the food processor comprises a heating stage, a stirring stage and a cooking stage. The motor for stirring the food materials is arranged in the machine head, and due to the closed design of the whole machine head, the conditions such as slurry overflow caused by over-high rotating speed, the service life reduction of the motor and the like can be caused when the temperature of the motor is increased.
The food cooking method according to the present invention will be described with reference to fig. 1. First, fig. 1 shows a flow chart of a food cooking method of a food processor according to the present invention. The food cooking method provided by the invention comprises the following steps:
step 101: and powering on the food processor. "Power on" is to be understood broadly herein. That is, this step may be triggered in a variety of ways. For example, the trigger may be set when a plug of the food processor is plugged into a power supply, or may be triggered when a user presses a start switch of the food processor, or may be triggered from the beginning of a food processing flow.
Step 102: the time period T from the last power-off to the present is detected. Similarly to the previous step, "power off" is also to be understood in a broad sense. That is, the duration T may be counted from when the plug of the food processor is unplugged, or may be counted from when the user presses the off switch of the food processor.
Step 103: the duration T is then compared with a preset threshold T1. If it is determined that T is greater than or equal to T1, the process proceeds to step 104, and the food is cooked. If T is less than T1, go to step 105, wait for a duration T2, and then go to step 104 to cook food.
Step 104: and (5) cooking food. In this step, the food material to be cooked in a certain cooking program is processed by the food processor to make a desired food. For example, a mixture of soybeans and water is heated and whipped to make soy milk. The cooking process generally includes heating, pulverizing/whipping, decocting, etc.
Step 105: before starting operation, the food processor is kept in a standby state and waits for a time period T2. After waiting for completion, the food is cooked in step 104. The advantage of this arrangement is that if the power is again applied since the last power down to the current time T was short, the temperature of the motor may be too high. The setting of the time T2 is intended to dissipate heat from the motor.
Step 106: and (5) finishing cooking, and powering off the food processor. The cooking is finished after the preset cooking program is finished, and power-off/point dropping can be carried out. Similarly, the power failure or the unplugging of the power plug of the food processor can also be that the machine head of the food processor is lifted or the upper cover is opened. When the power of the food processor is cut off, the next power-off time T is calculated again.
The above description is only a part of the description of a non-limiting example of the food cooking method provided by the present invention. In fact, the food preparation method provided by the present invention can be varied in many ways and is further described in some non-limiting examples.
According to one non-limiting example, the process 104, the process of cooking food can have a variety of different flows. Here, the plurality of different processes may be selected according to the selection of the user, the type of the material to be processed, and the number of the material to be processed. For example, the food is prepared by a high-speed stirring and heating process when soybean milk is prepared, and a low-speed stirring and non-heating process when meat paste is prepared. The process of firstly stirring at low speed and then stirring at high speed is adopted when the shaved ice is made. Aiming at different food cooking processes, the load of the motor and the temperature of the motor after the process is completed are different, and if the same power-down time detection mode and the same waiting time are adopted for the steps, the method is improper. Adverse consequences that may result from employing the exactly same power down time detection method for different food preparation processes include that the waiting step is still executed under the condition that the food processor does not actually need to wait, so that the user waiting time becomes longer, and the end user experience is degraded.
The specific method for determining the food cooking method of the next time according to the previous flow of the food cooking machine is various, and two optional specific methods are described in the following by using two non-limiting examples.
A first non-limiting example of a food preparation method of a food processor is further illustrated with reference to fig. 2. In this non-limiting example, the food preparation method comprises the steps of:
Step 203: detecting the time length T from the last power-off of the food processor to the present. Similarly, "power off" is to be understood broadly herein. That is, the duration T may be counted from when the plug of the food processor is unplugged, or may be counted from when the user presses the off switch of the food processor.
Step 204: the time duration T is compared with a preset threshold T1. If it is determined that T is not less than T1, the process proceeds to step 205, and the food is cooked. If T is less than T1, go to step 206, wait a time period T2, and then process to step 205.
Step 205: and (5) cooking food. In this step, the food material to be cooked in a certain cooking program is processed by the food processor to make a desired food. For example, a mixture of soybeans and water is heated and whipped to make soy milk. The cooking process typically includes heating, pulverizing/whipping, and the like.
Step 206: after waiting for a time period T2, the food is cooked in step 205.
Step 207: and (5) finishing cooking, and powering off the food processor.
It is noted that the above steps may have many variations. For example, step 202 may be performed at other times. Optionally, step 202 may be executed after step 203 is completed. However, since T2 is required in step 206, step 202 of determining T2 generally needs to be performed before step 206. On the other hand, the specific content of step 202 may be various, and an optional method is that step 202 further includes the following steps:
In step 222, in the present operation, the T2 in step 4 is set to zero.
The threshold T1 may be set to 10 to 30 minutes, preferably 20 minutes; the preset time period of the above T2 is 10 to 30 minutes, preferably 20 minutes.
Those skilled in the art can derive some other variations from the above steps. For example, instead of setting T2 to zero in step 222, a jump is made directly to step 205. Such a modification may solve at least some of the technical problems of the present invention, and therefore, it should be undoubtedly included in the scope of the present invention.
A second non-limiting example of a food preparation method of a food processor is described below with reference to fig. 3. According to this non-limiting example, the food preparation method comprises the steps of:
Step 305: after waiting for a time period T2, the food is cooked in step 306.
Step 306: and (5) cooking food. In this step, the food material to be cooked in a certain cooking program is processed by the food processor to make a desired food.
Step 307: and (5) finishing cooking, and powering off the food processor.
Those skilled in the art can derive some other variations from the above steps. For example, steps 303 and 304 need not necessarily be performed in the current order. Optionally, exchanging the locations of step 303 and step 304 may also solve at least part of the technical problems of the present invention. Such variations are not to be considered as a doubt within the scope of the invention.
The invention also provides a circuit for detecting the power failure time, which is suitable for the pulping method. Fig. 4 shows a block diagram of a circuit for detecting a power down time of the present invention. As shown in the figure, a power supply Vcc is connected with one end of a resistor R1, the other end of the resistor R1 is connected with one end of a resistor R2 and the anode of a diode D1 respectively, the other end of the resistor R2 is connected with a detection pin of a single chip microcomputer, a resistor R3 is connected in parallel with a capacitor C1, the anode of a capacitor C1 is connected with the cathode of the diode D1, the cathode of a capacitor C1 is grounded, when the power supply Vcc is powered down, the power supply Vcc is powered up again, the detection pin of the single chip microcomputer detects the voltage at the connection position of the resistor R1 and the resistor R2, and the time T from.
When the food processor is powered off, the resistor R3 and the capacitor C1 form a loop, wherein the capacitor C1 is the power supply of the loop. The detection pin of the single chip microcomputer is connected with the point A through a current limiting resistor R2, and the voltage of the point A can be detected. The longer the power is removed, the lower the voltage across capacitor C1 after discharge. And calculating the power-down time through the detected voltage of the point A. After the food processor is electrified again, wait to detect the good time of falling the electricity, the pin of singlechip becomes the delivery outlet, charges for electric capacity C1.
The parameters of the capacitor, the resistor and the diode can be set differently according to different requirements. The following description of the optional parameters of the capacitor, resistor and diode is given as a non-limiting example. In the present alternative example, the voltage value of the power supply Vcc is 5V, the maximum operating voltage of the capacitor C1 is 16V, and the capacitance is 220 uF. When the power supply Vcc is powered on, the capacitor C1 is charged. In the present example, the resistance of the resistor R1 is 2M Ω, the resistance of the resistor R2 is 1K Ω, and the resistance of the resistor R3 is 2M Ω. When the power supply Vcc is powered down, the capacitor C1 forms a discharge loop through the resistor R3 to discharge, and the discharge time of the capacitor C1 is longer than the charge time.
The food cooking method of the food cooking machine provided by the invention can ensure the heat dissipation time of the motor, on one hand, the whipping performance can not be reduced due to the overheating of the motor, on the other hand, the service life of the motor can be protected, and the safety of the food cooking machine is improved. The invention also provides a circuit for detecting the power-down time, which can accurately detect the time from last power-down.
The foregoing description of the embodiments is merely illustrative and exemplary of alternative embodiments of the present invention, and is not exhaustive of embodiments of the present invention, and it will be apparent to those skilled in the art that various modifications and variations can be made to the exemplary embodiments of the present invention described above without departing from the spirit and scope of the invention. For example, the skilled person may add the steps of determining the threshold T1 and the waiting time T2 when detecting the power down time next time according to the situation of the previous food cooking, and the like. Thus, it is intended that the present invention cover the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents.
Claims (7)
1. A food cooking method of a food cooking machine comprises the following steps:
step 1, powering on the food processor;
step 2, detecting the time T from the last power failure;
step 3, judging whether the time T is less than a threshold value T1, if T is less than T1, turning to step 4, otherwise, turning to step 5;
step 4, keeping the standby state for a waiting time T2, and cooking food;
step 5, the step of cooking food has a plurality of different processes, and according to the selection of a user, the step of cooking food is determined to be one of the plurality of processes for cooking food;
step 6, cooking is completed, and the food processor is powered off;
wherein, according to the flow in step 5 of the last run of the food, the method for determining the T2 in step 4 of the current run is to determine the T2 in step 4 of the current run according to whether the flow in step 5 of the last run of the food includes a heating process.
2. The food cooking method of the food processor as claimed in claim 1, wherein:
if the cooking food is judged not to comprise a heating process in the step 5 during the last operation, the T2 in the step 4 during the current operation is set to be zero;
if the heating process is judged to be included in the flow in the step 5 during the last operation of the food cooking, the time T2 in the step 4 during the operation is set as a preset time length.
3. The food cooking method of the food processor as claimed in claim 1, wherein: before the step 4, the step of judging whether the flow in the step 5 includes a heating process during the last operation of the food cooking is also included;
if the flow in the step 5 does not include the heating process when the food cooking is operated last time, the step 5 is executed;
and if the flow in the step 5 includes a heating process during the last running of the food cooking, turning to the step 4.
4. The food cooking method of the food processor as claimed in claim 1, wherein: the threshold T1 may be set to 10-30 minutes; the preset time period of the T2 is 10-30 minutes.
5. A circuit for detecting power-down time, which is suitable for the food processing method of the food processor as claimed in claim 1, wherein: one end of a first resistor is connected with a power supply, the other end of the first resistor is respectively connected with one end of a second resistor and the anode of a first diode, the other end of the second resistor is connected with a detection pin of a singlechip, a third resistor is connected with a first capacitor in parallel, the anode of the first capacitor is connected with the cathode of the first diode, and the cathode of the first capacitor is grounded;
and when the power supply is powered on again after power failure, the detection pin of the singlechip detects the voltage at the joint of the first resistor and the second resistor, and calculates the time T from the last power failure according to the voltage at the joint of the first resistor and the second resistor.
6. The circuit for detecting power down time of claim 5, wherein: the voltage value of the power supply is 5V, the maximum working voltage of the first capacitor is 16V, and the capacitance is 220 uF.
7. The circuit for detecting power down time of claim 5, wherein: the resistance value of the first resistor is 2M omega, the resistance value of the second resistor is 1K omega, and the resistance value of the third resistor is 2M omega.
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| CN109363533B (en) * | 2018-11-30 | 2022-06-28 | 九阳股份有限公司 | Soybean milk making control method of soybean milk maker and soybean milk maker |
| CN113133694B (en) * | 2020-01-19 | 2022-05-31 | 广东美的生活电器制造有限公司 | Control method of food processor, food processor and storage medium |
| CN113133692B (en) * | 2020-01-19 | 2023-03-31 | 广东美的生活电器制造有限公司 | Food processor and control method thereof |
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