CN108338671A - Control method for cooking apparatus - Google Patents
Control method for cooking apparatus Download PDFInfo
- Publication number
- CN108338671A CN108338671A CN201710058347.5A CN201710058347A CN108338671A CN 108338671 A CN108338671 A CN 108338671A CN 201710058347 A CN201710058347 A CN 201710058347A CN 108338671 A CN108338671 A CN 108338671A
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- China
- Prior art keywords
- vacuum pump
- control
- cooking apparatus
- exhaust passage
- electromagnet
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J27/00—Cooking-vessels
- A47J27/08—Pressure-cookers; Lids or locking devices specially adapted therefor
- A47J27/0802—Control mechanisms for pressure-cookers
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J36/00—Parts, details or accessories of cooking-vessels
- A47J36/38—Parts, details or accessories of cooking-vessels for withdrawing or condensing cooking vapors from cooking utensils
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- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Cookers (AREA)
Abstract
The invention discloses a kind of control method for cooking apparatus, the cooking apparatus includes：Cooker body；Lid；Vacuum pump, the air inlet of the vacuum pump are connected to the cooking space, and the exhaust outlet of the vacuum pump is connected to ambient atmosphere；Exhaust passage, the exhaust passage can be such that the cooking space is connected to ambient atmosphere；And control device, the control device is used to control the operation of the cooking apparatus, wherein the described method comprises the following steps：S1：The cooking apparatus heating is controlled, the temperature in the cooking space is made to reach first predetermined value；S2：The exhaust passage is closed, keeps the cooking space closed；S3：The vacuum pump is opened, after the first predetermined amount of time, closes the vacuum pump；S4：It opens the exhaust passage and passes through the second predetermined amount of time；S5：Repeat at least two periods of step S2 S4.The mouthfeel of the rice of control method culinary art according to the present invention is more preferably.
Description
Technical field
The present invention relates to cooker technical field more particularly to a kind of control methods for cooking apparatus.
Background technology
The cooking apparatus such as electric cooker, the electric pressure cooking saucepan sold currently on the market, the process of cooking generally comprise warm-up phase,
Water suction stage, the stage of being rapidly heated, boiling stage, stage of cooking rice over a slow fire, holding stage etc..Wherein, the water suction stage is usually and is cooking
When the temperature in the space in cooking apparatus reaches about 50 to 60 DEG C, cooking space is heated by heating device, and
Continue one section of duration.This stage can make the grain of rice fully absorb water and improve the mouthfeel of boiled meal.
However, absorbing water herein the stage, rice etc. is immersed in the cooking space of cooking apparatus for a long time, due to possible in water
Contain impurity so that appliance internal is easy to grow bacterium in the water suction stage, and makes the meal cooked that there may be peculiar smell even light
It is slightly variable matter.
Therefore, it is necessary to a kind of control method for cooking apparatus be proposed, to solve at least partly in the prior art
There are the problem of.
Invention content
To solve the above-mentioned problems, the present invention provides a kind of control method for cooking apparatus, the cooking apparatus packet
It includes：Cooker body is provided with interior pot in the cooker body；Lid, the lid are arranged in the cooker body, and the lid with it is described interior
Cooking space is formed between pot；Vacuum pump, the air inlet of the vacuum pump are connected to the cooking space, the row of the vacuum pump
Gas port is connected to ambient atmosphere；Exhaust passage, the exhaust passage can be such that the cooking space is connected to ambient atmosphere；And
Control device, the control device is used to control the operation of the cooking apparatus, wherein the described method comprises the following steps：
S1：The cooking apparatus heating is controlled, the temperature in the cooking space is made to reach first predetermined value；
S2：The exhaust passage is closed, keeps the cooking space closed；
S3：The vacuum pump is opened, after the first predetermined amount of time, closes the vacuum pump；
S4：It opens the exhaust passage and passes through the second predetermined amount of time；
S5：Repeat at least two periods of step S2-S4.
When temperature of the control method according to the present invention in cooking space reaches first predetermined value, control vacuum pump is opened
It opens, to be vacuumized to cooking space.It, can be with if the temperature in the water suction stage when first predetermined value is set as culinary art
Realization vacuumizes cooking space in the water suction stage, and the water suction stage so as to avoid cooking apparatus work is immersed in due to food
Bacterium is grown in water and is generated peculiar smell and is even gone bad.In addition, being vacuumized in the water suction stage, rice can also be promoted to absorb water, from
And the water absorption rate of rice is improved, to keep rice mouthfeel more preferable.And in this scenario, under the pressure in cooking space
Drop, water boiling point decline, and the convection intensity of water is reinforced, and heat convection is caused.In addition, with the variation of the pressure in cooking space,
Micro-bubble exudation in the grain of rice, the former bladdery position of moisture content filling more have and are easy to moisture content and enter in the grain of rice, improve the grain of rice
Water absorption rate, the water absorption rate of the grain of rice increases 8-15%, it is possible thereby to improve the mouthfeel of rice.
Preferably, the cooking apparatus further includes pressure control mechanism, and the pressure control mechanism includes that first exhaust is logical
Road and gravitation ball corresponding with the first exhaust passage, the cooking apparatus further include the first electromagnet, first electromagnetism
Iron can control the gravitation ball in the closed position for closing the first exhaust passage and open wide the first exhaust passage
It is moved between open position, to realize the closed of steam and discharge.The program, can be empty in culinary art by the way that pressure control mechanism is arranged
Between it is middle form certain pressure, so as to so that culinary art effect is more preferable.
Preferably, the control device is connected to first electromagnet, to control the opening of the pressure control mechanism
And closing.
Preferably, the cooking apparatus further includes vacuum cavitations component, and the vacuum cavitations component includes that second exhaust is logical
The actuation part in road, the sealing element for sealing the second exhaust channel and the action for controlling the sealing element, it is described to cook
Utensil of preparing food further includes the second electromagnet, and second electromagnet can control the action of the actuation part so that the sealing element
It is moved between the closed position in the second exhaust channel and the open position for opening wide the second exhaust channel closing, with reality
The closed and discharge of existing steam.
Preferably, the control device is connected to second electromagnet, to control the opening of the vacuum cavitations component
And closing.
Preferably, the step S2 further comprises the steps：
S21：It controls the pressure control mechanism to close, the first exhaust passage is made to close；
S22：It controls the vacuum cavitations component to close, the second exhaust channel is made to close.
The program can make cooking space fast sealing, save the time.
Preferably, the step S4 further comprises the steps：
S41：It controls the vacuum cavitations component to open, the second exhaust channel is made to open；
S42：It controls the pressure control mechanism to open, the first exhaust passage is made to open.
The program can make the pressure in cooking space go up rapidly, save the time.
Preferably, there is the control device pwm signal output end, the pwm signal output end to be connected to the vacuum
Pump, with to the vacuum pump output pwm signal, the control device is by controlling the duty ratio of the pwm signal to control
State the rotating speed of vacuum pump.In this scenario, control device and leads to by pwm signal output end to vacuum pump output pwm signal
The duty ratio for crossing control pwm signal controls the rotating speed of vacuum pump, so as to after a certain period of time only need to maintain true vacuumizing
The rotating speed that vacuum pump is reduced when reciprocal of duty cycle so as to reduce noise and Wen Sheng when vacuum pump maintains vacuum as much as possible, and drops
The power consumption of low cooking apparatus, and extend the service life of pump.
Preferably, the cooking apparatus further includes temperature sensor, and the temperature sensor is empty for sensing the culinary art
Between in temperature.The program can accurately sense the temperature in interior pot, and simple in structure, cost is relatively low.
Preferably, the cooking apparatus further includes solenoid valve, wherein the solenoid valve is connected to the described of the vacuum pump
Between air inlet and the cooking space, the air inlet that the solenoid valve is connected to the vacuum pump when opening is cooked with described
It prepares food space.
Preferably, the solenoid valve includes third electromagnet, and the control device is connected to described the of the solenoid valve
Three electromagnet, to control the opening and closing of the solenoid valve.
The program may be implemented to the real-time controllable of vacuum pump, simple in structure, easy to operate.
A series of concept of reduced forms is introduced in invention content, this will in the detailed description section further
It is described in detail.This part of the disclosure be not meant to attempt to limit technical solution claimed key feature and
Essential features do not mean that the protection domain for attempting to determine technical solution claimed more.
Below in conjunction with attached drawing, the advantages of the present invention will be described in detail and feature.
Description of the drawings
The following drawings of the present invention is used to understand the present invention in this as the part of the present invention.Shown in the drawings of this hair
Bright embodiment and its description, principle used to explain the present invention.In the accompanying drawings,
Fig. 1 is the stereoscopic schematic diagram of the cooking apparatus of a preferred embodiment according to the present invention, wherein in order to clear
For the sake of, the cover of lid removes and vacuum cavitations component is in decomposing state；
Fig. 2 is the diagrammatic cross-section of the cooking apparatus of a preferred embodiment according to the present invention；
Fig. 3 is the diagrammatic cross-section of the cooking apparatus of a preferred embodiment according to the present invention；
Fig. 4 is the stereoscopic schematic diagram of the cooking apparatus of another preferred embodiment according to the present invention；
Fig. 5 is the partial cutaway schematic of the lid of cooking apparatus shown in Fig. 4；
Fig. 6 is the partial cutaway schematic of the lid of cooking apparatus shown in Fig. 4；
Fig. 7 is the diagrammatic cross-section of the cooking apparatus of a preferred embodiment according to the present invention；
Fig. 8 is the schematic internal view of the lid of the cooking apparatus of a preferred embodiment according to the present invention；
Fig. 9 shows the waveform diagram of PWM；
Figure 10 shows the cooking apparatus of a preferred embodiment according to the present invention cooking space in process of cooking
In temperature and pressure variation curve graph；
Figure 11 shows that the cooking apparatus of another preferred embodiment according to the present invention cooks sky in process of cooking
Between in temperature and pressure variation curve graph；And
Figure 12 shows the flow of the control method for cooking apparatus of a preferred embodiment according to the present invention
Figure.
Specific implementation mode
In the following description, a large amount of concrete details are given in order to provide more thorough understanding of the invention.So
And it will be apparent to one skilled in the art that the present invention may not need one or more of these details and be able to
Implement.In other examples, in order to avoid with the present invention obscure, for some technical characteristics well known in the art not into
Row description.
In order to thoroughly understand the present invention, detailed structure will be proposed in following description.Obviously, embodiment party of the invention
Formula is not limited to the specific details that those skilled in the art is familiar with.The better embodiment detailed description of the present invention is such as
Under, however other than these detailed descriptions, the present invention can also have other embodiment.
Hereinafter, being illustrated to the cooking apparatus of the preferred embodiment of the present invention with reference to attached drawing.It is appreciated that according to this
The cooking apparatus of invention in addition to having the function of cooking rice, can also have cook congee, the various functions such as Baoshang.
As depicted in figs. 1 and 2, cooking apparatus 100 includes cooker body 110 and lid 120.The substantially rounded length of cooker body 110
Cube shape, and the interior pot incorporating section with cylindrical shape, interior pot 111 can freely be put into interior pot incorporating section or from interior
Pot incorporating section is taken out, to facilitate the cleaning of internal pot 111.Interior pot 111 is usually made of metal material and upper surface has circle
Opening, for holding material to be heated, rice, soup etc..Cooker body 110 includes heating dress for heating the interior pot of interior pot
It sets.
The substantially rounded rectangular shape of lid 120, and essentially corresponded to the shape of cooker body 110.Lid 120 with
Openable and closable mode is pivotally connected to cooker body 110, and cooker body 110 is closed for covering.Lid may include cover 124, liner 121 and removable
Lid 122, removable lid 122 and liner 121 are detachably connected, are cleaned at any time to removable lid 122 with facilitating.Removable lid 122
It is generally circular, and can be made of plastics or metal, it is opposite to form one for covering the upper surface opening for closing interior pot 111
Closed cooking space.Certainly, removable lid 122 or other shapes.Lid 120 may be set to be other shapes and knot
Structure, as long as it can close cooker body 110 in process middle cover of cooking.Also, sealing ring 123 is generally also provided on lid 120, it is close
Seal 123 can be made of such as rubber material, and be arranged between removable lid 122 and interior pot 111, at lid 120
Cooking space is sealed when lid conjunction state.
In order to sense the temperature in interior pot, cooking apparatus 100 further includes the bottom temp for being respectively used to sense interior pot
Bottom temp sensor and head temperature for sensing interior pot tip temperature sensor.Bottom temp sensor and top
Temperature sensor can be thermistor.Bottom temp sensor and tip temperature sensor are connected to the control of cooking apparatus
The temperature signal sensed is fed back to control device by device (not shown).Control device be based on bottom temp sensor and
The work of pot heating device in the temperature signal control that tip temperature sensor senses.
In order to sense the pressure in interior pot, cooking apparatus 100 further includes for sensing in the cooking space of interior pot
The pressure sensor of pressure.Pressure sensor senses the pressure in cooking space, and generates and indicate the pressure in cooking space
Pressure signal.Pressure sensor is connected to control device, the pressure signal control that control device is sensed based on pressure sensor
The work of interior pot heating device.
It continues to refer to figure 1, cooking apparatus further includes vacuum cavitations component 130, and vacuum cavitations component 130 is arranged in lid
On 120 liner 121, the gas vent 125 coordinated with the vacuum cavitations component 130 is provided in removable lid 122.The program can be with
The number of parts in the removable lid 122 of lid 120 is reduced, to user-friendly.
Hereafter the structure of vacuum cavitations component 130 is described in detail.
As shown in Figure 1-Figure 3, vacuum cavitations component 130 includes connecting rod 30, sealing element fixed seat 51, sealing element 50, sliding pin
40, (the first back-moving spring 52, second back-moving spring 41 and the second electromagnet 20.
Connecting rod 30 is fixed on by connecting rod fixed seat 31 on liner 121, and connecting rod fixed seat 31 can limit connecting rod 30, make
Obtaining connecting rod 30 can only move between actuated position shown in Fig. 2 and resting position shown in Fig. 3 in the horizontal direction.
Connecting rod 30 can be connected with the second electromagnet 20, and the second electromagnet 20 can be arranged by electromagnet fixed seat 21
On liner 121.When the second electromagnet 20 is powered, connecting rod 30 is moved to actuated position towards the second electromagnet 20, and when second
When electromagnet 20 powers off, connecting rod 30 is moved to resting position far from the second electromagnet 20.
Sealing element fixed seat 51 is arranged on liner 121, and sealing element fixed seat 51 is removable relative to about 121 liner.
In the shown embodiment, the bottom of sealing element fixed seat 51 connects with the sealing element 50 of such as sealed silicone, the sealing element 50
Top be connected to liner 121, can be deformed relative to the movement of liner 121 with sealing element fixed seat 51 to sealing element 50.
Also, sealing element fixed seat 51 has the receiving portion of opening upwards, and sliding pin 40 is relative in sealing element fixed seat 51
Under be movably disposed in the receiving portion of sealing element fixed seat 51.As in Fig. 2 and Fig. 3 as it can be seen that being provided with second in receiving portion
Resetting spring 41.Second back-moving spring 41 is between sliding pin 40 and sealing element fixed seat 51, with solid to sliding pin 40 and sealing element
Reservation 51 applies the opposite restoring force in direction.The top of sliding pin is for contacting connecting rod 30 as a result, and lower part is against second back-moving spring
41。
In the shown embodiment, connecting rod 30 has the attachment portion of recess (opening down) upwards, and attachment portion is at least partly
Ground is configured to inclined-plane or cambered surface.And the one end in attachment portion is higher than the other end.
When connecting rod 30 is located at actuated position (Fig. 2), sliding pin 40 is oppressed downwards by connecting rod 30, and sliding pin 40 is relative to sealing element
Fixed seat 51 moves down, and compresses second back-moving spring 41.Sliding pin 40 and second back-moving spring 41 are by the active force of connecting rod 30
It is transferred to sealing element fixed seat 51, and sealing element fixed seat 51 is moved down relative to liner 121, and compresses first and resets
Spring 52, and change upper and lower position of the sealing element fixed seat 51 relative to liner 121.Further, (the first back-moving spring 52 is upper
End can seal against part fixed seat 51, and lower end is against liner 121, to which (the first back-moving spring 52 can be by sealing element fixed seat
51 bias along the direction far from removable lid 122.
In other words, sealing element fixed seat 51 moves under the action of connecting rod 30 and sliding pin 40 towards removable lid 122, drives
Sealing element 50 deforms and closes the gas vent 125 in removable lid 122.
Specifically, when connecting rod 30 is located at actuated position, the lower surface of the tip contact connecting rod 30 of sliding pin 40, and will sealing
Part 50 is resisted against at gas vent 125 to realize closing.(the first back-moving spring 52 and second back-moving spring 41 are compressed at this time.
When connecting rod 30 is located at resting position (Fig. 3), since the not equal attachment portion of depth is that sliding pin 40 is provided to moving up
Dynamic space, sealing element fixed seat 51 can be (upward) mobile far from removable lid 122 under the action of (the first back-moving spring 52, to
Sealing element fixed seat 51 is moved up with dynamic seal 50, and sealing element 50 opens gas vent 125, and sliding pin 40 resets bullet second
It is moved up under the action of spring 41.
In addition, as it can be seen that lid 120 further comprises third resetting spring 22,22 structure of third resetting spring in such as Fig. 1-Fig. 3
It makes as along the direction offset conn rod 30 towards resting position.Third resetting spring 22 can be by connecting rod 30 towards rest position as a result,
Biasing is set, in the case of not by other active forces, to open gas vent 125.
Optionally, the end of sliding pin 40 contacted with attachment portion has cambered surface.Sliding pin 40 can be gentle with connecting rod 30 as a result,
Contact.For example, the top of sliding pin 40 can be hemispherical.
Preferably, the second electromagnet 20 is connected to control device so that control device can control the logical of the second electromagnet 20
It is disconnected, to the opening and closing of controllable gas vent 125.
The structure of the vacuum cavitations component 230 of another preferred embodiment is described in detail below with reference to Fig. 4-Fig. 6.
Specifically, vacuum cavitations component 230 includes connecting rod 530, sealing element fixed seat 551, the reset of sealing element 550, first
Spring 552 and the second electromagnet 520.
Connecting rod 530 is fixed on by connecting rod fixed seat 531 on liner 510, and connecting rod fixed seat 531 can limit connecting rod
530 so that connecting rod 530 can only move between actuated position shown in Fig. 5 and resting position shown in fig. 6 in the horizontal direction
It is dynamic.
Connecting rod 530 can be connected with the second electromagnet 520, and the second electromagnet 520 can be set by electromagnet fixed seat 521
It sets on liner 510.When the second electromagnet 520 is powered, connecting rod 530 is moved to actuated position towards the second electromagnet 520, and
When the second electromagnet 520 powers off, connecting rod 530 is moved to resting position far from the second electromagnet 520.
Sealing element fixed seat 551 is arranged in interior lining, and with sliding pin 540 that is protruding upward and being contacted with connecting rod 530.
Sealing element fixed seat 551 is removable relative to about 510 liner.In the shown embodiment, the bottom of sealing element fixed seat 551
Connect with the sealing element 550 of such as sealed silicone, the top of the sealing element 550 is connected to liner 510, to which sealing element 550 can
It is deformed relative to the movement of liner 510 with sealing element fixed seat 551.
In the shown embodiment, connecting rod 530 has the attachment portion of recess (opening down) upwards, and attachment portion is at least partly
Ground is configured to inclined-plane or cambered surface.And the one end in attachment portion is higher than the other end.
When connecting rod 530 is located at actuated position (Fig. 5), sliding pin 540 is oppressed downwards by connecting rod 530, sliding pin 540 and sealing element
Fixed seat 551 integrally moves down, and compresses (the first back-moving spring 552, and changes sealing element fixed seat 551 relative to liner
510 upper and lower position.Further, the upper end of (the first back-moving spring 552 can seal against part fixed seat 551, and lower end is against interior
Lining 510, to which (the first back-moving spring 552 can bias sealing element fixed seat 551 along the direction far from removable lid 560.
In other words, sealing element fixed seat 551 moves under the action of connecting rod 530 towards removable lid 560, band dynamic seal
550 deform and close the gas vent 561 in removable lid 560.
Specifically, when connecting rod 530 is located at actuated position, the lower surface of the tip contact connecting rod 530 of sliding pin 540, and will
Sealing element 550 is resisted against at gas vent 561 to realize closing.(the first back-moving spring 552 is compressed at this time.
When connecting rod 530 is located at resting position (Fig. 6), since equal attachment portion is not that sliding pin 540 provides upwards to depth
Mobile space, sealing element fixed seat 551 can be (upward) mobile far from removable lid 560 under the action of (the first back-moving spring 552,
To which sealing element fixed seat 551 is moved up with dynamic seal 550, sealing element 550 opens gas vent 561.
In addition, as it can be seen that lid further comprises second back-moving spring 522,522 structure of second back-moving spring in such as Fig. 4-Fig. 6
It makes as along the direction offset conn rod 530 towards resting position.Second back-moving spring 522 can be by connecting rod 530 towards static as a result,
Location bias connecting rod 530, in the case of not by other active forces, to open gas vent 561.
Optionally, the end of sliding pin 540 contacted with attachment portion has cambered surface.Sliding pin 540 can be with connecting rod 530 as a result,
Gentle contact.For example, the top of sliding pin 540 can be hemispherical.
As shown in fig. 7, cooking apparatus further includes pressure control mechanism 140, pressure control mechanism 140 is arranged in lid 120
In, pressure control mechanism 140 can control the on off operating mode of exhaust passage 141, to realize the closed of steam and discharge.Hereafter to pressure
The structure of power control mechanism is described in detail.
Pressure control mechanism 140 includes exhaust passage 141, gravitation ball 142 and the first electromagnet 143.It is preferred real at one
It applies in mode, the first electromagnet 143 with gravitation ball 142 for being coordinated, to control the on off operating mode of exhaust passage 141.Such as
Shown in Fig. 7, the first electromagnet is set to the side of gravitation ball, and under the action of the first electromagnet 143, gravitation ball 142 can opened
It opens and is moved between position and closed position.Specifically, when gravitation ball 142 is in the open position, gravitation ball 142 falls logical in exhaust
On road 141, exhaust passage 141 is closed；When gravitation ball 142 is in the open position, gravitation ball 142 is far from exhaust passage 141, such as
Shown in Fig. 7, exhaust passage 141 is opened.
Preferably, control device is connect with the first electromagnet 143, for providing electric current for the first electromagnet 143, and is passed through
The size and/or direction for controlling electric current control intensity and/or the direction in magnetic field, to control the active force to gravitation ball 142, from
And controllable exhaust passage 141 switches between an open position and a closed position, and then can realize the closed of steam in interior pot
And discharge.
As shown in figure 8, cooking apparatus further includes vacuum control mechanism 150, vacuum control mechanism 150 is arranged in lid 120
In.Vacuum control mechanism 150 includes vacuum pump 151 and third electromagnet 152.Vacuum pump 151 can internally in pot cooking space
Carry out vacuum pumping.The air inlet 153 of vacuum pump is connected to cooking space, and exhaust outlet 154 and the ambient atmosphere of vacuum pump connect
It is logical.Third electromagnet 152 can control the air inlet 153 of vacuum pump and being connected to for exhaust outlet 154.Further, as shown in figure 8,
Air inlet 153 is connected to cooking space by solenoid valve 155, and pump and cooking space can be controlled by the opening and closing of solenoid valve 155
Whether it is connected to.Solenoid valve 155 is connect with third electromagnet 152.
Preferably, third electromagnet 152 is connected to control device so that control device can be by controlling third electromagnet
152 control the opening and closing of vacuum pump 151.
When cooking apparatus according to the preferred embodiment of the present invention can need in cooking process (such as subscription time
Or in soaking time) cooking space is vacuumized using vacuum pump, to prevent food spoilage.
Preferably, there is control device PWM (pulsewidth modulation) signal output end, pwm signal output end to be connected to vacuum pump
Pwm signal input terminal, with to vacuum pump output pwm signal.Control device is controlled true by controlling the duty ratio of pwm signal
The rotating speed of sky pump.
In present embodiment, the duty ratio for the pwm signal that the pwm signal input terminal of vacuum pump receives is lower, and pump turns
Speed is higher.So when the cooking space to cooking apparatus vacuumizes, the microprocessor of control device can pass through output
The lower pwm signal of duty ratio and so that vacuum pump is run at high speed, quickly carry out vacuum；It is vacuumizing after a certain period of time only
When need to maintain vacuum degree, the duty ratio of pwm signal can be improved, to reduce the rotating speed of vacuum pump, so as to as much as possible
The noise and Wen Sheng when vacuum pump maintains vacuum are reduced, and reduces the power consumption of cooking apparatus, and extends the service life of pump.Fig. 9
Shown PWM output waveforms next and duty ratio tune up after waveform, wherein the width group that 1 high level and 1 low level are added
At a PWM cycle.High level corresponds to high voltage, and low level corresponds to low-voltage.Duty ratio was tuned up compared to former PWM waveform, week
Phase is constant, only the time of high level account for whole cycle time it is relatively longer.After adjustment is closed in this way, in the same period,
The controllable of average current may be implemented with this in average voltage higher, the electric current bigger of output.
In the culinary art work of cooking apparatus, it can be worked with following below scheme：When needing to vacuumize, that is, need
When increasing the vacuum degree of cooking space, control device exports the first pwm signal by pwm signal output end, has minimum
Duty ratio, at this time vacuum pump for example maximum average current is obtained by power supply, most can rapidly be taken out with full power operation
Gas；Vacuum degree in cooking space reaches certain value, it is only necessary to which when maintaining the vacuum degree of cooking space, control device passes through
Pwm signal output end exports the second pwm signal, has the duty ratio bigger than the first pwm signal, and vacuum pump passes through power supply at this time
Obtained average current reduces, and power consumption and noise can all reduce.It is appreciated that the two pwm signals make vacuum pump receive
Rotating speed when to the first pwm signal is higher than the rotating speed when receiving the second pwm signal.In this way, vacuum can be simply implemented
Pump uses higher rotation speed when being vacuumized to cooking apparatus, and rotating speed is reduced when only needing to maintain vacuum degree.
It is highly preferred that the pwm signal of control device output can gradually be converted to the 2nd PWM letters from first pwm signal
Number, to realize that the rotating speed of vacuum pump is gradually reduced.
The control method for above-mentioned cooking apparatus is described more fully below.
Cooking apparatus according to the present invention be powered open after can successively have reservation process, water suction process, heating process,
Boiling process, process of cooking rice over a slow fire etc., will hereafter be described in greater detail successively.
Preengage process
After cooking apparatus is powered and opens, reservation function is clicked, control device controls the first electromagnet 143 and is powered, due to
Coil in first electromagnet 143 is by by electric current, and coil generates magnetic field, and electromagnet core moves downward under magnetic fields,
Exhaust passage 141 is blocked at the top that gravitation ball 142 returns to exhaust passage 141.To prevent moment electrical current excessive, when the first electricity
After magnet 143 is powered, the second electromagnet 20 of control is powered, and the electric current for equally flowing through coil produces magnetic field, electromagnet iron
Core moves downward under magnetic fields, is moved downward with the connecting rod 30 in dynamic iron core, and the top of sliding pin 40 withstands on the oblique of connecting rod 30
On face, the inclined-plane of connecting rod 30 drives sliding pin 40 to move downward, and sliding pin 40 and second back-moving spring 41 push sealing element fixed seat 51
It is moved downward with sealing element 50, when the lower surface on the top of sliding pin 40 top to connecting rod 30, sealing element 50 is close in removable lid 122
Gas vent 125, so far in the space that surrounds of pot 111 and removable lid 122 form confined space.
When the energization of the second electromagnet 20 finishes, control device controls third electromagnet 152 and starts to work, third electromagnet
152 are powered, and air inlet 153 is made to be connected with exhaust outlet 154, form exhaust and vacuumize gas circuit.When third electromagnet 152 has been powered
Finish, by pwm signal, is powered to vacuum pump 151.It is that low level is effective or the effective mode of high level according to vacuum pump 151, control
The size of PWM duty cycle processed makes vacuum pump 151 be in full speed operation pattern, is evacuated to cooking space with most fast speed,
It is extracted out until the air in interior pot 111.
When the pressure that vacuum pump 151 works in about 3 minutes or interior pot 111 reaches -40KPA or so, passes through and increase PWM
Duty ratio (vacuum pump low level is effective) reduces PWM duty cycle (vacuum pump high level is effective), and control vacuum pump 151, which reduces, to be turned
Speed maintains the vacuum degree of interior pot 111.When 111 pressure of interior pot is higher than -40KPA, reducing PWM duty cycle, (vacuum pump low level has
Effect) or increase PWM duty cycle (vacuum pump high level is effective), control vacuum pump 151 increases speed, the pressure of interior pot 111 is tieed up
It holds in -40KPA or so.By this method, the vacuum degree in cooking space is maintained.
Absorb water process
After subscription time, into water suction process.The water suction process is retouched in detail referring especially to Figure 12 below
It states.In the process that absorbs water, the controllable interior pot heating device of control device is intermittently heated with total power, for example, heating accounts for
Empty ratio can be 20/32.It should be noted that herein, " heating duty ratio " refers to interior pot heating dress in one cycle
Set the ratio of the time (such as 20s) and cycle time (such as 32s) actually generated heat.Meanwhile control device detects bottom temp
The data of sensor are simultaneously converted to corresponding temperature value, when detect interior pot bottom temperature value be more than 60 DEG C then control in pot add
Thermal stops heating, when detect the temperature value of interior pot bottom be less than 55 DEG C then in pot heating device recovery heatings, to make
Rice coolant-temperature gage is maintained at (as shown in Figure 10) between 55 DEG C -60 DEG C (examples as " first predetermined value ") in water suction process, into
And the grain of rice is made fully to absorb water, and when bottom temp sensor detects that cooking bottom temperature reaches first predetermined value, control device
Control the energization of the first electromagnet 143.Since the coil in the first electromagnet 143 is by by electric current, coil generates magnetic field, electromagnet
Iron core moves downward under magnetic fields, and exhaust passage 141 is blocked at the top that gravitation ball 142 returns to exhaust passage 141.To prevent
Moment electrical current is excessive, and after the first electromagnet 143 is powered, the second electromagnet 20 of control is powered, and equally flows through coil
Electric current produce magnetic field, electromagnet core moves downward under magnetic fields, and band dynamic iron core upper connecting rod 30 moves downward, sliding pin
40 top is withstood on the inclined-plane of connecting rod 30, and the inclined-plane of connecting rod 30 drives sliding pin 40 to move downward, and sliding pin 40 and second resets bullet
Spring 41 pushes sealing element fixed seat 51 and sealing element to move downward, when the lower surface face on the top of sliding pin 40 top to connecting rod 30,
Sealing element is close to the gas vent 125 in removable lid 122, and the space that so far interior pot and removable lid 122 are surrounded forms confined space.
When the energization of the second electromagnet 20 finishes, control device controls third electromagnet 152 and starts to work, third electromagnet
152 are powered, and the air inlet 153 of vacuum pump is made to be connected with exhaust outlet 154, form exhaust and vacuumize gas circuit.When third electromagnet
152, which are powered, finishes, and by pwm signal, is powered to vacuum pump 151.It is that low level is effective or high level is effective according to vacuum pump 151
Mode, controlling the size of PWM duty cycle makes vacuum pump 151 be in full speed operation pattern, with most fast speed to cooking space
It is evacuated, is extracted out until the air in interior pot 111.
When the pressure that vacuum pump 151 works in about 3 minutes or interior pot reaches -40KPA or so, accounted for by increasing PWM
Sky is than (vacuum pump low level is effective) or reduces PWM duty cycle (vacuum pump high level is effective), and control vacuum pump 151, which reduces, to be turned
Speed maintains the vacuum degree of interior pot.When inner pot pressure be higher than -40KPA when, reduce PWM duty cycle (vacuum pump low level is effective) or
Increase PWM duty cycle (vacuum pump high level is effective), control vacuum pump 151 increases speed, and interior pan gas pressure is maintained -40KPA
Left and right.By this method, the vacuum degree in cooking space is maintained.
So maintain the vacuum degree in cooking space after about 3 minutes, controlling PWM duty cycle maximum first, (low level has
Effect) or it is minimum (high level is effective), so that vacuum pump 151 is stopped.After vacuum pump 151 is stopped, the second electromagnetism is controlled
Iron 20 is stopped, and the sealing element 50 for being thus close to gas vent 125 lifts, and the cooking space in interior pot and outside atmosphere can at this time
To be connected to by this gas vent 125, in pot air pressure increase rapidly, close to atmospheric pressure.Control device controls the first electromagnet at this time
143 are stopped, and since negative pressure reduces in pot, gravitation ball 142 can be open, and thus further increase in pot and the outer air of pot
Connection so that in pot air pressure increase, be promptly restored to normal pressure.
When air pressure in pot and Atmospheric Phase etc., after waiting for about half a minute, control device repeats above-mentioned internal pot 111 and takes out very
Null process and the process for restoring normal pressure, so cycle 2 is more than the period, such as can recycle 3 periods or 4 periods.
As shown in figure 11, cooking space can also be made to be always held at negative pressure state in the process that absorbs water, that is, to implement herein
In mode, the not above-mentioned process that normal pressure is restored to from negative pressure, until water suction process terminates.
In the above scheme, with the decline of the pressure in cooking space, water boiling point declines, and the convection intensity of water is reinforced,
Cause heat convection.And with the decline of the pressure in cooking space, the micro-bubble in the grain of rice oozes out, and the filling of moisture content is former
Bladdery position more has and is easy to moisture content and enters in the grain of rice, improves the water absorption rate of the grain of rice, and the water absorption rate of the grain of rice increases 8-15%,
It is possible thereby to improve the mouthfeel of rice.
Heating process
Before entering heating process after the process that absorbs water, control device controls third electromagnet 152 and the first electromagnet
143 power-off make vacuum pump 151 close and exhaust passage 141 are made to open, with the cold air in pot in discharge.Subsequently into heating work
Sequence, i.e. high flame heating period.Pot heating device is with high-power carry out intermittent-heating in control device control, for example, heating accounts for
Empty ratio can be 28/32.The data of control device detection tip temperature sensor are simultaneously converted into corresponding temperature value, when control fills
It sets after detecting that the temperature value of tip temperature sensor is more than about 83 DEG C, then controlling the first electromagnet 143 makes gravitation ball 142 close
Exhaust passage 141 is closed, interior pot heating device continues to keep heating with small-power at this time, generates steam in pot, and including steam
Constantly assemble in pot, when control device detects that the temperature of tip temperature sensor reaches about 106 DEG C of (corresponding culinary art skies at this time
Between in relative pressure be 25KPA) when, then in the heating of pot heater stop, at this time in rice coolant-temperature gage about 95-98 in pot
℃.At this point, being the space being completely closed in cooking space, pressure difference can not be generated, therefore temporarily without generating boiling in interior pot
Phenomenon.Later into boiling process and process of cooking rice over a slow fire.
Boiling process and process of cooking rice over a slow fire
In entirely boiling process, interior pot heating device carries out intermittent-heating with relatively small power, for example, heating accounts for
Empty ratio can be 16/32.In the early period of boiling process, control device, which controls the first electromagnet 143, makes exhaust passage 141 open
Steam is discharged, and interior pot heating device temporarily ceases heating, at this time the vapor (steam) temperature in cooking space, rice coolant-temperature gage and
Pressure can all be declined, and the pressure in cooking space it is unexpected decline so that in liquid in pot boil suddenly, the grain of rice with
Flow generates acutely rolling.When control device detects that the temperature value of tip temperature sensor is reduced to 103 DEG C of (these from 106 DEG C
When corresponding cooking space in relative pressure be reduced to 12KPA from 25KPA) after, control device, which controls the first electromagnet 143, to be made
Exhaust passage 141 is closed and interior pot heating device continues to heat, until detecting that the temperature value of tip temperature sensor rises
To after 106 DEG C, interior pot heating device just stops heating.Then control device, which controls the first electromagnet 143, makes exhaust passage 141 open
It opens, relative pressure in pot is dropped into 12KPA, repeatedly more than 3 cycles, preferably 3 cycles.Later, control device
Controlling the first electromagnet 143 makes exhaust passage 141 be closed.By after the violent boiling in this stage, heat in interior pot with
The rolling of water and convection current, to make interior pot temperature evenly, so that cooking the rice taken evenly.Subsequently enter boiling work
The later stage of sequence.
In the later stage of boiling process and the early period for process of cooking rice over a slow fire, interior pot heating device is with relatively small power into the ranks
It has a rest heating, for example, heating duty ratio can be 6/32, and exhaust passage 141 is closed.When control device detects
The temperature value of tip temperature sensor is greater than or equal to after 106 DEG C (relative pressure 25KPA), then controls interior pot heating device
Stop heating, exhaust passage 141 still maintains closing.Later, when control device detects the temperature value of tip temperature sensor
After 105 DEG C (relative pressure 20KPA), then control device controls interior pot heating device recovery heating.Subsequently
Entire process repeats this process, that is, the temperature at the top of interior pot is maintained 105 DEG C -106 DEG C or so, it will be in cooking space
Pressure maintain 20-25KPA or so.Enter the later stage for process of cooking rice over a slow fire later.
In the later stage for cooking rice over a slow fire process, pot heater stop heating in control device control, while control device control pressure
Power control mechanism intermittently opens exhaust passage 141, for example, opening steam discharge hole 2 seconds, closes 8 seconds later so that steam is arranged
The opening/closing time of discharge hole is 1：4, above-mentioned discharge process is repeated 3 times later, the relative pressure in cooking space is made to be dropped from 20KPA
Low normal pressure makes exhaust passage 141 be in open state later.
It should be noted that, although in the present embodiment, the opening/closing time ratio of exhaust passage 141 is 1：4, but at this
It invents in unshowned other embodiment, the opening/closing time ratio of exhaust passage 141 can also be set according to actual conditions as it
He is worth, such as 1：2-1：Between 6.
Then, control device controls the second electromagnet 20 and is stopped, and the gas vent 125 in removable lid 122 is opened, with this
Mode can be adsorbed on lid to avoid pot in when user is intended to open the lid of cooking apparatus, occurring and can not open
Phenomenon.
Cooking apparatus according to the present invention can be cooked for example by the way that vacuum cavitations component and vacuum control mechanism is arranged
The reservation stage or water suction stage of journey carry out vacuumize process to cooking space, pre- so as to avoid cooking apparatus from working
About stage or water suction stage grow bacterium and generate peculiar smell and even go bad since food impregnates in water.In addition, true by making
Sky pump vacuumizes in the water suction stage, rice can also be promoted to absorb water, to improve the water absorption rate of rice, to make rice mouthfeel more
It is good.And cooking apparatus according to the present invention is by being arranged vacuum cavitations component in interior lining, it is possible to reduce the removable lid of lid
On number of parts, to user-friendly.
It should be noted that above-mentioned temperature value, pressure value and the time value mentioned in each process of culinary art is simultaneously
It is not absolute.In the unshowned other embodiment of the present invention, above-mentioned temperature value, pressure value and time value can roots
It is set as other values according to actual conditions.
The present invention is illustrated by the above embodiment, but it is to be understood that, the above embodiment is
Purpose for illustrating and illustrating, and be not intended to limit the invention within the scope of described embodiment.In addition this field
It is understood that the invention is not limited in the above embodiment, introduction according to the present invention can also be made technical staff
More kinds of variants and modifications, these variants and modifications are all fallen within scope of the present invention.The guarantor of the present invention
Shield range is defined by the appended claims and its equivalent scope.
Claims (11)
1. a kind of control method for cooking apparatus, which is characterized in that the cooking apparatus includes：Cooker body, in the cooker body
It is provided with interior pot；Lid, the lid are arranged in the cooker body, and it is empty that culinary art is formed between the lid and the interior pot
Between；Vacuum pump, the air inlet of the vacuum pump are connected to the cooking space, and exhaust outlet and the ambient atmosphere of the vacuum pump connect
It is logical；Exhaust passage, the exhaust passage can be such that the cooking space is connected to ambient atmosphere；And control device, the control
Device processed is used to control the operation of the cooking apparatus, wherein the described method comprises the following steps：
S1：The cooking apparatus heating is controlled, the temperature in the cooking space is made to reach first predetermined value；
S2：The exhaust passage is closed, keeps the cooking space closed；
S3：The vacuum pump is opened, after the first predetermined amount of time, closes the vacuum pump；
S4：It opens the exhaust passage and passes through the second predetermined amount of time；
S5：Repeat at least two periods of step S2-S4.
2. control method according to claim 1, which is characterized in that the cooking apparatus further includes pressure control mechanism,
The pressure control mechanism includes first exhaust passage and gravitation ball corresponding with the first exhaust passage, the cooking apparatus
Further include the first electromagnet, first electromagnet can control the gravitation ball in the closure for closing the first exhaust passage
It is moved between position and the open position for opening wide the first exhaust passage, to realize the closed of steam and discharge.
3. control method according to claim 2, which is characterized in that the control device is connected to first electromagnetism
Iron, to control the opening and closing of the pressure control mechanism.
4. control method according to claim 3, which is characterized in that the cooking apparatus further includes vacuum cavitations component,
The vacuum cavitations component includes second exhaust channel, the sealing element for sealing the second exhaust channel and for controlling
The actuation part of the action of sealing element is stated, the cooking apparatus further includes the second electromagnet, and second electromagnet can control institute
State the action of actuation part so that the sealing element is in the closed position for closing the second exhaust channel and opens wide the second row
It is moved between the open position in gas channel, to realize the closed of steam and discharge.
5. control method according to claim 4, which is characterized in that the control device is connected to second electromagnetism
Iron, to control the opening and closing of the vacuum cavitations component.
6. control method according to claim 5, which is characterized in that the step S2 further comprises the steps：
S21：It controls the pressure control mechanism to close, the first exhaust passage is made to close；
S22：It controls the vacuum cavitations component to close, the second exhaust channel is made to close.
7. control method according to claim 5, which is characterized in that the step S4 further comprises the steps：
S41：It controls the vacuum cavitations component to open, the second exhaust channel is made to open；
S42：It controls the pressure control mechanism to open, the first exhaust passage is made to open.
8. control method according to claim 1, which is characterized in that the control device has pwm signal output end, institute
It states pwm signal output end and is connected to the vacuum pump, with to the vacuum pump output pwm signal, the control device passes through control
The duty ratio of the pwm signal is made to control the rotating speed of the vacuum pump.
9. control method according to claim 1, which is characterized in that the cooking apparatus further includes temperature sensor, institute
Temperature sensor is stated for sensing the temperature in the cooking space.
10. control method according to claim 1, which is characterized in that the cooking apparatus further includes solenoid valve, wherein institute
It states solenoid valve to be connected between the air inlet of the vacuum pump and the cooking space, the solenoid valve is connected to when opening
The air inlet of the vacuum pump and the cooking space.
11. control method according to claim 10, which is characterized in that the solenoid valve includes third electromagnet, described
Control device is connected to the third electromagnet of the solenoid valve, to control the opening and closing of the solenoid valve.
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| CN201710058347.5A CN108338671B (en) | 2017-01-23 | 2017-01-23 | Control method for cooking appliance |
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|---|---|---|---|
| CN201710058347.5A CN108338671B (en) | 2017-01-23 | 2017-01-23 | Control method for cooking appliance |
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| CN108338671B CN108338671B (en) | 2021-01-22 |
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| CN110856608A (en) * | 2018-08-24 | 2020-03-03 | 佛山市顺德区美的电热电器制造有限公司 | Vacuum cooking appliance and cooking method thereof |
| CN110859517A (en) * | 2018-08-27 | 2020-03-06 | 佛山市顺德区美的电热电器制造有限公司 | Cooking appliance control method and device and cooking appliance |
| CN110859486A (en) * | 2018-08-27 | 2020-03-06 | 佛山市顺德区美的电热电器制造有限公司 | Vacuum cooking appliance and method for identifying cooking amount in vacuum cooking appliance |
| CN110859507A (en) * | 2018-08-27 | 2020-03-06 | 佛山市顺德区美的电热电器制造有限公司 | Vacuum cooking appliance and method for identifying cooking amount in vacuum cooking appliance |
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| CN111281111A (en) * | 2018-12-07 | 2020-06-16 | 浙江苏泊尔家电制造有限公司 | Cooking appliance and pressure control method for cooking appliance |
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| CN110856608A (en) * | 2018-08-24 | 2020-03-03 | 佛山市顺德区美的电热电器制造有限公司 | Vacuum cooking appliance and cooking method thereof |
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| CN110859486A (en) * | 2018-08-27 | 2020-03-06 | 佛山市顺德区美的电热电器制造有限公司 | Vacuum cooking appliance and method for identifying cooking amount in vacuum cooking appliance |
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| CN110859487A (en) * | 2018-08-27 | 2020-03-06 | 佛山市顺德区美的电热电器制造有限公司 | Vacuum cooking utensil and cooking method thereof |
| CN111110019A (en) * | 2018-10-31 | 2020-05-08 | 浙江苏泊尔家电制造有限公司 | Cooking appliance and control method thereof |
| CN111109999A (en) * | 2018-10-31 | 2020-05-08 | 浙江苏泊尔家电制造有限公司 | Cooking appliance and control method for cooking appliance |
| CN111109999B (en) * | 2018-10-31 | 2022-04-22 | 浙江苏泊尔家电制造有限公司 | Cooking appliance and control method for cooking appliance |
| CN111281111B (en) * | 2018-12-07 | 2023-04-07 | 浙江苏泊尔家电制造有限公司 | Cooking appliance and pressure control method for cooking appliance |
| CN111281111A (en) * | 2018-12-07 | 2020-06-16 | 浙江苏泊尔家电制造有限公司 | Cooking appliance and pressure control method for cooking appliance |
| CN111685594A (en) * | 2019-03-12 | 2020-09-22 | 浙江苏泊尔家电制造有限公司 | Cooking appliance and cooking method for cooking appliance |
| CN112336165A (en) * | 2019-08-09 | 2021-02-09 | 佛山市顺德区美的电热电器制造有限公司 | Cooking appliance, operation control method, and computer-readable storage medium |
| CN111195075A (en) * | 2019-10-30 | 2020-05-26 | 浙江苏泊尔家电制造有限公司 | Cooking utensil |
| CN112806827B (en) * | 2019-11-18 | 2022-04-08 | 佛山市顺德区美的电热电器制造有限公司 | Control method, control device, cooking appliance and computer-readable storage medium |
| CN112806828B (en) * | 2019-11-18 | 2022-03-01 | 佛山市顺德区美的电热电器制造有限公司 | Control method, control device, cooking appliance and computer-readable storage medium |
| CN112806827A (en) * | 2019-11-18 | 2021-05-18 | 佛山市顺德区美的电热电器制造有限公司 | Control method, control device, cooking appliance and computer-readable storage medium |
| CN112806828A (en) * | 2019-11-18 | 2021-05-18 | 佛山市顺德区美的电热电器制造有限公司 | Control method, control device, cooking appliance and computer-readable storage medium |
| CN112869550A (en) * | 2019-11-30 | 2021-06-01 | 佛山市顺德区美的电热电器制造有限公司 | Control method and device of cooking appliance, cooking appliance and storage medium |
| CN112205851A (en) * | 2020-09-29 | 2021-01-12 | 广东智源机器人科技有限公司 | Water adding system |
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