CN103784024B - The control method of pressure in rice cooker upper cover, electric cooker and electric cooker - Google Patents
The control method of pressure in rice cooker upper cover, electric cooker and electric cooker Download PDFInfo
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- CN103784024B CN103784024B CN201410035389.3A CN201410035389A CN103784024B CN 103784024 B CN103784024 B CN 103784024B CN 201410035389 A CN201410035389 A CN 201410035389A CN 103784024 B CN103784024 B CN 103784024B
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Abstract
The invention provides the control method of pressure in a kind of rice cooker upper cover, the electric cooker including this rice cooker upper cover and a kind of electric cooker.The electric cooker that the present invention provides, upper cover body is provided with the first steam channel and the second steam channel, and pressurizer can connect or close the second steam channel；Pressure relief device can close the first steam channel；Positive opening mechanism can open pressure relief device, to connect the first steam channel；Controller is connected with positive opening mechanism, and can control positive opening mechanism opening pressure relief device in the rapid heat-up stage of electric cooker.The electric cooker that the present invention provides, in the rapid heat-up stage of electric cooker, carries out forcing pressure release to control the pressure in electric cooker, forces pressure release to produce violent bumping in making electric cooker, and the rice of caking is broken up by the vibrations that bumping produces, and makes rice soft, in good taste.
Description
Technical field
The present invention relates to kitchen utensils field, more specifically, relate to a kind of rice cooker upper cover, include this
The control method of pressure in the electric cooker of rice cooker upper cover and a kind of electric cooker.
Background technology
During cooking with electric cooker, typically can be through four-stage: the water suction stage, quickly add
Heat stage, boiling holding stage and the stage of cooking rice over a slow fire, in order to make the rice cooked soft, need to stir rice
Meal, to break up caking, to provide a kind of new electric cooker to this end, need badly, it is possible in the process cooked
In automatically stir rice, break up rice caking, make rice soft.
Summary of the invention
It is contemplated that at least solve one of technical problem present in prior art.
To this end, the purpose of one aspect of the present invention is, it is provided that one can realize during cooking
Violent boiling, rice caking is broken up, made the rice cooker upper cover that rice is soft.
The purpose of another aspect of the present invention is, it is provided that a kind of electric meal including this rice cooker upper cover
Pot.
The purpose of another aspect of the invention is, it is provided that the control method of pressure in a kind of electric cooker,
Producing more violent boiling in can making electric cooker, that is broken up by rice caking is more abundant.
For achieving the above object, the embodiment of one aspect of the invention provides a kind of rice cooker upper cover,
Including: upper cover body, described upper cover body is provided with the first steam channel and the second steam channel；Pressurize
Device, described pressurizer is arranged on described upper cover body, can connect or close described second steam and lead to
Road, so that the pressure in described electric cooker maintains in pre-set pressure range；Pressure relief device, described pressure release fills
Put and be arranged on described upper cover body, and described first steam channel can be closed；Positive opening mechanism, described
Positive opening mechanism can open described pressure relief device, to connect described first steam channel；And controller, institute
State controller to be connected with described positive opening mechanism, and described pressure can be controlled in the heating process of electric cooker
Opening mechanism opens described pressure relief device.
The rice cooker upper cover that the above embodiment of the present invention provides, is provided with the first steam channel and the
It is respectively arranged with pressure relief device and pressurize on two steam channels, the first steam channel and the second steam channel
Device, pressurizer can make the pressure in electric cooker be maintained under pre-set threshold value；Quick at electric cooker
Heating period, controller can control positive opening mechanism and be opened by pressure relief device, make the first steam channel
Connection, now electric cooker is internal connects with ambient atmosphere, due to the air pressure superatmospheric in electric cooker,
Electric cooker inside is connected with ambient atmosphere and can produce bumping effect, the rice that bumping lumps in making electric cooker
Meal is broken up, and so, the rice that electric cooker cooks is softer.
In sum, the rice cooker upper cover that the embodiment of the present invention provides, can produce violent in electric cooker
Bumping, rice lumps and is fully broken up, and the rice cooked is softer.
It addition, it is special also to have following supplementary technology according to the rice cooker upper cover of the above embodiment of the present invention offer
Levy:
According to one embodiment of present invention, described positive opening mechanism includes magnetic valve, on described magnetic valve
Connect and have push rod, described magnetic valve can control described push rod to move to open described pressure relief device.
According to one embodiment of present invention, described pressurizer includes pressure retaining valve, and described pressure retaining valve is offered
There is the exhaust hole connected with described second steam channel；Described pressure relief device includes relief valve, described relief valve
On offer the exhaust hole connected with described first steam channel, and the aperture of the exhaust hole of described pressure retaining valve is little
Aperture in the exhaust hole of described relief valve.
According to one embodiment of present invention, described relief valve includes: valve seat, and described valve seat is installed on described
On upper cover body, and described valve seat is provided with the described exhaust hole that is connected with described first steam channel；And valve
Core, described spool is arranged in described valve seat, and is blocked by the described exhaust hole on described valve seat, described valve
Core can open the described exhaust hole on described valve seat under the drive of the described push rod of described positive opening mechanism.
According to one embodiment of present invention, described pressure relief device is adopted made of plastic, and described pressure relief device
It is provided with pressue device.
According to one embodiment of present invention, the sectional area of described second steam channel is less than described first steam
The sectional area of passage.
According to one embodiment of present invention, described pressure relief device includes: valve body, and described valve body is arranged on institute
State on upper cover body, and described first steam channel can be blocked；And bull stick, described bull stick one end and described valve
Body is fixing to be connected, and the other end is articulated on described upper cover body；Described bull stick is in described positive opening mechanism
Described valve body can be driven under the effect of described push rod to rotate, to open described first steam channel.
According to one embodiment of present invention, described pressure relief device includes: bonnet, and described bonnet, is positioned at
The exit of described first steam channel；Bottom flange, described bottom flange is positioned at entering of described first steam channel
At Kou；And connecting rod, described connecting rod passes described first steam channel, and the two ends of described connecting rod are divided
It is not connected with described bonnet, and described bottom flange；The described push rod of described positive opening mechanism is given on described
When valve gap applies active force, described bonnet, makes described bottom flange cover described first steaming by described connecting rod
The entrance of vapour passage；The described push rod of described positive opening mechanism weakens or disappears and applies described bonnet,
Active force, under gravity, described bottom flange departs from the entrance of described first steam channel, opens
Described first steam channel.
According to one embodiment of present invention, described pressure relief device includes: Flexible Connector and valve body, described
Valve body is arranged on described upper cover body by described Flexible Connector；Push away described in described positive opening mechanism
When bar applies active force to described valve body, described valve body extrudes described Flexible Connector and makes described body cap residence
State the first steam channel；The described push rod of described positive opening mechanism weakens or disappears and applies described valve body
During active force, under the elastic force effect of described Flexible Connector, described first steam channel is beaten by described valve body
Open.
According to one embodiment of present invention, described rice cooker upper cover also includes resetting-mechanism, described reset machine
Structure is connected with described pressure relief device, when described positive opening mechanism does not acts on by described pressure relief device reset with
Close described first steam channel.
According to one embodiment of present invention, described controller includes: detecting element, and described detecting element can
Rapid heat-up stage at described electric cooker detects the temperature of steam in electric cooker, and described detecting element and control
Unit processed is connected, and the temperature signal detected can be transferred to described control unit；And control unit, institute
State control unit to be compared with preset value by the described temperature signal received, and according to comparative result, control
Make described positive opening mechanism in the range of default duration, with default frequency, described pressure relief device is beaten
Open.
According to one embodiment of present invention, described detecting element includes temperature sensor.
The embodiment of another aspect of the invention provides a kind of electric cooker, including cooker body and any of the above-described enforcement
Rice cooker upper cover described in example, described rice cooker upper cover is articulated in described cooker body, on described electric cooker has
State whole beneficial effects of rice cooker upper cover described in any embodiment.
According to one embodiment of present invention, the upper cover body of described rice cooker upper cover includes: cover, described
Cover is provided with steam (vapor) outlet；And cover plate, described cover plate is arranged on the lower section of described cover, and described cover plate
Being provided with the first steam channel and the second steam channel connected with described steam (vapor) outlet, controller is arranged on institute
State on cover plate.
The embodiment of another aspect of the invention provides in a kind of electric cooker the control method of pressure in institute
Pressure in described electric cooker is controlled by the rapid heat-up stage stating electric cooker, comprises the following steps: step
Rapid S102, the temperature of steam in the detecting element described electric cooker of detection；Step S104, control unit will inspection
The described temperature measured compares with setting value, and controls positive opening mechanism by described according to comparative result
Pressure relief device on rice cooker upper cover is opened, to control the pressure in described electric cooker.
The control method of pressure in the electric cooker that the embodiment of the present invention provides, first detecting element detection electric cooker
The temperature of interior steam, is then transferred to control unit by the temperature value detected, control unit is by this temperature value
Comparing with preset value, if the temperature value detected is less than preset value, then controller does not send control signal；
Otherwise, controller sends a signal to positive opening mechanism, positive opening mechanism action, is opened by pressure relief device,
Air pressure in electric cooker is connected with atmospheric pressure, due to the air pressure superatmospheric in now electric cooker, therefore
Can produce violent bumping in electric cooker, be broken up by the rice of caking, the rice making electric cooker cook is softer.
According to one embodiment of present invention, in described step S104, described control unit controls described
Positive opening mechanism is in the range of default duration, open described pressure relief device with default frequency.
Additional aspect and the advantage of the present invention will become obvious in following description part, or pass through the present invention
Practice recognize.
Accompanying drawing explanation
Above-mentioned and/or the additional aspect of the present invention and advantage are from combining the accompanying drawings below description to embodiment
Will be apparent from easy to understand, wherein:
Fig. 1 is the structure according to the pressure relief device described in first embodiment of the invention Yu positive opening mechanism
Schematic diagram；
Fig. 2 is the structure according to the pressure relief device described in second embodiment of the invention Yu positive opening mechanism
Schematic diagram；
Fig. 3 is the structure according to the pressure relief device described in third embodiment of the invention Yu positive opening mechanism
Schematic diagram；
Fig. 4 is the plan structure schematic diagram shown in Fig. 3；
Fig. 5 is the structure according to the pressure relief device described in four embodiment of the invention Yu positive opening mechanism
Schematic diagram；
In Fig. 6 is each stage and each stage cooked according to the electric cooker described in one embodiment of the invention
Heating power, the schematic diagram of temperature of cooker body；
Fig. 7 is the flow chart according to the compress control method in the electric cooker described in one embodiment of the invention.
Wherein, in Fig. 1 to Fig. 5, corresponding relation between reference and component names is:
1 pressure relief device, 11 valve seats, 12 valve bodies, 13 bull sticks, 14 connecting rods, 15 bonnet,s,
16 bottom flanges, 17 Flexible Connectors, 2 pressurizers, 3 cover plates, 31 first steam channels,
32 second steam channels, 4 magnetic valves, 41 push rods, 5 back-moving springs, 6 cooker body
Detailed description of the invention
In order to be more clearly understood that the above-mentioned purpose of the present invention, feature and advantage, below in conjunction with attached
The present invention is further described in detail by figure and detailed description of the invention.It should be noted that not
In the case of conflict, the feature in embodiments herein and embodiment can be mutually combined.
Elaborate a lot of detail in the following description so that fully understanding the present invention, but,
The present invention can implement to use other to be different from mode described here, therefore, and the guarantor of the present invention
Scope of protecting is not limited by following public specific embodiment.
Describe rice cooker upper cover according to some embodiments of the invention with reference to the accompanying drawings, include this electricity meal
The control method of pressure in the electric cooker of pot upper cover and electric cooker.
The rice cooker upper cover provided according to some embodiments of the invention, including upper cover body, pressurizer 2,
Pressure relief device 1, positive opening mechanism and controller.
Wherein, described upper cover body is provided with the first steam channel 31 and the second steam channel 32；
Described pressurizer 2 is arranged on described upper cover body, can connect or close described second steam and lead to
Road 32, so that the pressure in described electric cooker maintains in pre-set pressure range；
Described pressure relief device 1 is arranged on described upper cover body, and can close described first steam channel 31；
Described positive opening mechanism can open described pressure relief device 1, to connect described first steam channel 31；
Described controller is connected with described positive opening mechanism, and can control in the rapid heat-up stage of electric cooker
Pressure relief device 1 described in described positive opening mechanism opening.
The rice cooker upper cover that the above embodiment of the present invention provides, is provided with the first steam channel and the
It is respectively arranged with pressure relief device and pressurize on two steam channels, the first steam channel and the second steam channel
Device, pressurizer can make the pressure in electric cooker be maintained under pre-set threshold value；Quick at electric cooker
Heating period, controller can control positive opening mechanism and be opened by pressure relief device, make the first steam channel
Connection, now electric cooker is internal connects with ambient atmosphere, due to the gas in rapid heat-up stage electric cooker
Pressure superatmospheric, connects electric cooker inside with ambient atmosphere and can produce bumping effect, and bumping makes electricity
In rice cooker, the rice of caking is broken up, and so, the rice cooked in electric cooker is softer.Quickly add
The heating power in heat stage is the highest, and more than the heating power in other stages, the air pressure in electric cooker rises
The fastest, therefore, in rapid heat-up stage by pressure relief device positive opening, the bumping effect in electric cooker
The most violent, rice can sufficiently be broken up, and makes rice softer.
In sum, the rice cooker upper cover that the present invention provides, violent bumping can be produced in electric cooker,
Rice caking can fully be broken up, and the rice cooked is softer.
It is said that in general, the heating process of electric cooker is divided into water suction stage, rapid heat-up stage, boiling to keep rank
Section and cooking rice over a slow fire the stage, rapid heat-up stage refers to the stage that average heating power in electric cooker heating process is maximum
(such as: the rated power of electric cooker is 1000W, the average heating power of rapid heat-up stage is not less than
900W, or when adding hot plate heating, the dutycycle of rapid heat-up stage is not less than 28:32 or IH electromagnetism and adds
During heat, the dutycycle of rapid heat-up stage is not less than 14:16), in electric cooker, temperature rises the most in this stage
Hurry up, air pressure rises the fastest.In a concrete example, in electric cooker, water temperature is maintained at about 50 DEG C
Process is the water suction stage, and now the grain of rice can quickly absorb water, and the average heating power of electric cooker is 400W；
In electric cooker, temperature is rapid heat-up stage from 50 DEG C of processes being heated to water boiling, electric cooker in this stage
Average heating power the highest, for 900W；The process making water be maintained at fluidized state is the boiling holding stage,
Now the average heating power of electric cooker is 500W.During electric cooker is quickly cooked, there is not suction
In the water stage, water temperature is directly heated to water boiling from room temperature with peak power by electric cooker, and this stage is for quickly to add
The heat stage；Then for the boiling holding stage.
A specific embodiment according to the present invention, as shown in Figures 1 to 5, described positive opening mechanism wraps
Including magnetic valve 4, described magnetic valve 4 connects has push rod 41, described magnetic valve 4 can control described push rod
41 move to open described pressure relief device 1.
Positive opening mechanism includes magnetic valve, and magnetic valve connects a push rod, and magnetic valve is in the control of controller
System is lower drives push rod action, by pressure relief device positive opening, carries out pressure release, in turn results in the play in electric cooker
Strong bumping, makes the rice of caking be broken up, and rice is softer.
First concrete example according to the present invention, described pressurizer 2 includes pressure retaining valve, described pressure retaining valve
On offer the exhaust hole connected with described second steam channel 32；Described pressure relief device 1 includes relief valve,
The exhaust hole connected with described first steam channel 31 is offered on described relief valve, and described pressure retaining valve
The aperture of exhaust hole is less than the aperture of the exhaust hole of described relief valve.
Specifically, as it is shown in figure 1, described relief valve includes valve seat 11 and spool 12.
Wherein, described valve seat 11 is installed on described upper cover body, and described valve seat 11 is provided with and described
The exhaust hole (not shown) that one steam channel 31 is connected；
Described spool 12 is arranged in described valve seat 11, and is blocked up by the described exhaust hole on described valve seat 12
Living, described spool 12 can open described valve seat 11 under the drive of the described push rod of described positive opening mechanism
On described exhaust hole.
Further, described relief valve is adopted made of plastic, and described relief valve is provided with pressue device.
As it is shown in figure 1, valve seat 11 is arc mechanism, under gravity, spool 12 is positioned at arc
The extreme lower position of structure, now, the exhaust hole on valve seat 11 can be blocked by spool 12, pressure relief device
1 cannot pressure release；Magnetic valve 4 (i.e. positive opening mechanism) action under the control of the controller, drive pushes away
Bar 41 stretches out, and push rod 41 can promote spool 12 to move, and makes spool 12 leave extreme lower position, will row
Steam vent is opened, and now pressure relief device 1 can carry out pressure release；Under the control of the controller, push rod 41 is retracted,
Spool 12, under the effect of self gravitation, automatically resets, and is then blocked by the exhaust hole on valve seat 11.
In the pressure pressure leak process of electric cooker, the bumping effect that pressure release causes is relevant to the aperture of exhaust hole,
The aperture of exhaust hole is the biggest, and bumping effect is the best；But, the aperture of exhaust hole is the biggest, maintains uniform pressure
The weight of spool required during value is the biggest, and the cost of build-up of pressure valve increases, in order in cost and bumping effect
Between obtain balance, the present invention is provided with two pressure valve, respectively pressure retaining valve and relief valve, and will protect
Weight and the exhaust hole aperture design of pressure valve are less, to reduce cost, and are set in the steam vent aperture of relief valve
Meter is big, improves tumbling effect, and relief valve uses and is made of plastics, to reduce cost, and at relief valve simultaneously
Upper setting adds hold down gag to increase the weight of relief valve.
Therefore, in the above embodiment of the present invention, relief valve and the setting of pressure retaining valve, both ensured electric cooker
Cost of manufacture relatively low, taken into account the bumping effect of electric cooker simultaneously, made cooking of electric cooker effective.
Pressue device in the above embodiment of the present invention can also use simultaneously as positive opening mechanism, is letting out
The non-pressure release state of pressure valve, pressue device applies force on relief valve, increases the pressure of the initial pressure release of relief valve
Force value；Forcing the pressure release stage, pressue device action, by relief valve positive opening, carries out pressure release.
Second concrete example according to the present invention, as shown in Figure 3 and Figure 4, described pressure relief device includes
Valve body 12 and bull stick 13.
Wherein, described valve body 12 is arranged on described upper cover body, and can block described first steam channel
31；
Described bull stick 13 one end is fixing with described valve body 12 to be connected, and the other end is articulated on described upper cover body；
Described bull stick 13 can drive described valve body under the effect of the described push rod 41 of described positive opening mechanism
12 rotate, to open described first steam channel 31.
As shown in Figure 4, in the above-mentioned concrete example of the present invention, described rice cooker upper cover also includes resetting
Spring 5 (i.e. resetting-mechanism), described back-moving spring 5 is connected with the bull stick 13 of described pressure relief device, in institute
State when positive opening mechanism does not acts on and described pressure relief device is resetted.To close described first steam channel 31.
Preferably, the sectional area of described second steam channel 32 is less than the cross section of described first steam channel 31
Long-pending.
In the example depicted in fig. 4, pressure relief device includes valve body 12 and bull stick 13, and valve body 12 can be around
One end of bull stick 13 rotates, in the non-pressure release state of pressure relief device, as shown in phantom in Figure 4, valve body
First steam channel is blocked by 12, and back-moving spring 5 is in former long status；When performing to force pressure release,
As shown in solid in Fig. 4, controller controls magnetic valve 4 action, and magnetic valve 4 drives push rod 41 to stretch out,
Valve body 12 is pushed away origin-location by push rod 41, and the first steam channel 31 is opened, and electric cooker can be carried out
Pressure release, now back-moving spring 5 is compressed；Controller controls magnetic valve 4 and is retracted by push rod 41, is pressed
The back-moving spring 5 of contracting promotes bull stick 13 to rotate, and valve body 12 recovers to original position, steams first
Vapour passage 31 is blocked, and electric cooker pressure release terminates.
In the pressure pressure leak process of electric cooker, the bumping effect that pressure release causes and the cross section of the first steam channel
Long-pending relevant, the sectional area of the first steam channel is the biggest, and bumping effect is the best, in the above embodiment of the present invention
In, the sectional area of the second steam channel, less than the sectional area of the first steam channel, so, passes through positive opening
Pressure relief device, by the first steam channel positive opening so that the bumping effect of electric cooker is more preferable.
The 3rd the concrete example according to the present invention, as in figure 2 it is shown, described pressure relief device includes bonnet,
15, bottom flange 16 and connecting rod 14.
Wherein, described bonnet, 15 is positioned at the exit of described first steam channel 31；
Described bottom flange 16 is positioned at the porch of described first steam channel 31；
Described bonnet, 15 is connected by described connecting rod 14 with described bottom flange 16；
Described connecting rod 14 is through described first steam channel 31, and the two ends of described connecting rod 14 are respectively
It is connected with described bonnet, 15 and described bottom flange 16；
When the described push rod 41 of described positive opening mechanism applies active force to described bonnet, 15, described on
Valve gap 15 makes described bottom flange 16 cover the entrance of described first steam channel 31 by described connecting rod 14；
The described push rod of described positive opening mechanism weakens or disappears time described bonnet, 15 is applied active force,
Under gravity, described bottom flange 16 departs from the entrance of described first steam channel 31, opens institute
State the first steam channel 31.
Preferably, the sectional area of described second steam channel 32 is less than the cross section of described first steam channel 31
Long-pending.
In the above examples of the invention, when pressure relief device is closed, pushing away on magnetic valve 4
Bar 41 is in the state of stretching out, and now, push rod 41 is by bonnet, 15 jack-up of pressure relief device, bonnet,
15 drive bottom flange 16 to move upward by connecting rod 14, and bottom flange 16 is by the first steam channel 31
Entrance block, pressure relief device can not pressure release, state as shown in Figure 2；When controller sends pressure
During the instruction of pressure release, push rod 41 is retracted by magnetic valve 4, under pressure relief device is under the effect of self gravitation
Falling, now, bottom flange 16 departs from the entrance of the first steam channel 31, by the first steam channel 31
Entrance is opened, and the steam in electric cooker can be discharged from the first steam channel 31, and pressure relief device carries out pressure release；
After pressure release terminates, magnetic valve 4 under the control of the controller, makes push rod 41 stretch out, by bonnet, 15
Jack-up, bottom flange 16 is by the entrance closedown of the first steam channel 31, and now pressure release terminates.
The 4th the concrete example according to the present invention, as it is shown in figure 5, described pressure relief device includes elastic connection
Part 17 and valve body 12.
Wherein, described valve body 12 is arranged on described upper cover body by described Flexible Connector 17；
When the described push rod 41 of described positive opening mechanism applies active force to described valve body 12, described valve body 12
Extrude described Flexible Connector 17 and cover described first steam channel 31；Described positive opening mechanism described
Push rod 41 weakens or disappears time described valve body 12 is applied active force, at the elastic force of described Flexible Connector 17
Under effect, described first steam channel 31 is opened by described valve body 12.
Preferably, the sectional area of described second steam channel 32 is less than the cross section of described first steam channel 31
Long-pending.
In the above examples of the invention, when pressure relief device is closed, pushing away on magnetic valve 4
Bar 41 is in the state of stretching out, and now, push rod presses for 41 times the valve body 12 of pressure relief device, valve body 12 to squeeze
Compression elasticity connector 17, until the entrance of the first steam channel 31 is covered by valve body, now, steam leads to
Road is closed, and pressure relief device can not pressure release；When controller sends the instruction forcing pressure release,
Push rod 41 is retracted by magnetic valve 4, valve body 12 under the elastic force effect of Flexible Connector 17 on move, and
Depart from the entrance of the first steam channel 31, the entrance of the first steam channel 31 is opened, in electric cooker
Steam can discharge from the first steam channel 31, pressure relief device carries out pressure release；After pressure release terminates, electromagnetism
Valve 4 under the control of the controller, makes push rod 41 stretch out, by straightening under valve body to by the first steam channel
The entrance of 31 covers, and now pressure release terminates.
According to one embodiment of present invention, described controller includes detecting element and control unit.
Wherein, described detecting element can in rapid heat-up stage detection electric cooker the temperature of steam, and described
Detecting element is connected with control unit, and the temperature signal detected can be transferred to described control unit；
The described temperature signal received is compared by described control unit with preset value, and according to comparing knot
Really, control described positive opening mechanism in the range of default duration, with default frequency, described pressure release is filled
Put and open.
Specifically, described detecting element includes temperature sensor.
Controller includes temperature sensor and control unit, and temperature sensor can detect the temperature of steam in electric cooker
Degree, and can be transferred to control unit by the temperature signal detected, control unit by the temperature value that detects with
Pre-seting and compare, if the temperature value detected is not less than pre-seting, then control unit sends instruction, control
Pressure relief device positive opening is carried out pressure release by positive opening mechanism processed, and temperature signal is the triggering letter forcing pressure release
Number, after pressure relief device starts to force pressure release, can be in default time span, carry out with default frequency
Repeatedly pressure release, such as: in 3～6 minutes, pressure relief device is opened 3～6 times by positive opening mechanism,
Pressure relief device continues venting duration every time is 2 seconds.
The embodiment of another aspect of the invention provides electric cooker, as it is shown in figure 1, include cooker body 6 He
Rice cooker upper cover described in any of the above-described embodiment, described rice cooker upper cover is articulated in described cooker body 6, tool
There are whole beneficial effects of rice cooker upper cover described in any of the above-described embodiment.
Specifically, as it is shown in figure 1, the upper cover body of described rice cooker upper cover includes: cover is (in figure not
Illustrate) and cover plate 3.
Wherein, described cover is provided with steam (vapor) outlet；
Described cover plate 3 is arranged on the lower section of described cover, and described cover plate 3 is provided with and described steam (vapor) outlet
First steam channel 31 and the second steam channel 32 of connection, controller is arranged on described cover plate 3.
The embodiment of another aspect of the invention provides the control method of pressure in a kind of electric cooker, such as figure
Shown in 7, the pressure in described electric cooker is controlled by the rapid heat-up stage at described electric cooker, including
Following steps:
Step S102, the temperature of steam in the detecting element described electric cooker of detection；
Step S104, the described temperature detected is compared by control unit with setting value, and according to than
Pressure relief device on described rice cooker upper cover is opened by relatively output control positive opening mechanism, to control described electricity
Pressure in rice cooker.
The control method of pressure in the electric cooker that the embodiment of the present invention provides, first detecting element detection electric cooker
The temperature of interior steam, is then transferred to control unit by the temperature value detected, control unit is by this temperature value
Comparing with preset value, if the temperature value detected is less than preset value, then controller does not send control signal；
Otherwise, controller sends a signal to positive opening mechanism, positive opening mechanism action, is opened by pressure relief device,
Air pressure in electric cooker is connected with atmospheric pressure, due to the air pressure superatmospheric in now electric cooker, therefore
Can produce violent bumping in electric cooker, be broken up by the rice of caking, the rice making electric cooker cook is softer.
According to one embodiment of present invention, in described step S104, described control unit controls described
Positive opening mechanism is in the range of default duration, open described pressure relief device with default frequency.
Control unit can control positive opening mechanism in the range of default duration, with default frequency general
Pressure relief device is opened and is carried out pressure release, such as: in 3～6 minutes after reaching temperature conditions, forces
Pressure relief device is opened 3～6 times by mechanism, and it is 2 seconds that each pressure relief device continues venting duration, due to soon
The speed heating period is high flame heating, and in electric cooker, boost in pressure is fast, so beaten by pressure relief device every time
Holding and all can produce violent bumping, several times after pressure release, the rice of caking is fully broken up, then electricity meal
Pot enters boiling stage, proceeds to little fire pattern, constantly boiling.Cook and after terminating, control positive opening machine
Pressure relief device is opened by structure, gets rid of the residual pressure in electric cooker.
Illustrate below in conjunction with the control process of pressure in the electric cooker that the present invention is provided by Fig. 6:
Include four-stage it is said that in general, cook in electric cooker: water suction the stage, rapid heat-up stage,
Boiling holding stage and stage (not shown) of cooking rice over a slow fire, show first three rank therein in Fig. 6
Section, A represents the water suction stage, B represent rapid heat-up stage, C represent boiling the holding stage, wherein,
Horizontal axis representing time T, 1. curve represents the time dependent curve of the temperature bottom electric rice cooker body,
2. curve represents the time dependent curve of water temperature in electric cooker, and 3. line segment represents electric cooker heating power
Time dependent curve, region B1 represents the pressure pressure release stage in rapid heat-up stage, generally,
Preset temperature value can reach in the later stage of rapid heat-up stage, i.e. reaches the pressure pressure release after preset temperature
Stage is in the later stage of rapid heat-up stage, and the dotted line in the B1 of region represents magnetic valve (i.e. positive opening
Mechanism) number of times of action and duration that every time action is lasting, as can be seen from Figure 6, magnetic valve is carried out
5 actions, i.e. pressure relief device force pressure release, each pressure release forcing the pressure release stage to carry out 5 times
When device carries out forcing pressure release, electric cooker is internal produces violent bumping, and the vibrations that bumping produces will knot
The rice of block is broken up, and repeatedly forcing pressure release to make, that rice breaks up is more abundant, the rice that electric cooker cooks without
Caking, rice is softer.
In the description of this specification, term " embodiment ", " some embodiments ", " specific embodiment "
Deng description means to combine this embodiment or example describes specific features, structure, material or feature be contained in
In at least one embodiment of the present invention or example.In this manual, the schematic representation to above-mentioned term
It is not necessarily referring to identical embodiment or example.And, the specific features of description, structure, material or spy
Point can combine in any one or more embodiments or example in an appropriate manner.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for ability
For the technical staff in territory, the present invention can have various modifications and variations.All in the spirit and principles in the present invention
Within, any modification, equivalent substitution and improvement etc. made, should be included in protection scope of the present invention it
In.
Claims (16)
1. a rice cooker upper cover, it is characterised in that including:
Upper cover body, described upper cover body is provided with the first steam channel and the second steam channel；
Pressurizer, described pressurizer is arranged on described upper cover body, can connect or close described
Two steam channels, so that the pressure in described electric cooker maintains in pre-set pressure range；
Pressure relief device, described pressure relief device is arranged on described upper cover body, and can close described first steam
Passage；
Positive opening mechanism, described positive opening mechanism can open described pressure relief device, to connect described first
Steam channel；With
Controller, described controller is connected with described positive opening mechanism, and can be in electric cooker heating process
Rapid heat-up stage control pressure relief device described in described positive opening mechanism opening；Wherein, described quickly add
The heat stage is the stage that in electric cooker heating process, average heating power is maximum.
Rice cooker upper cover the most according to claim 1, it is characterised in that
Described positive opening mechanism includes magnetic valve, and described magnetic valve connects push rod, and described magnetic valve can
Control described push rod to move to open described pressure relief device.
Rice cooker upper cover the most according to claim 2, it is characterised in that
Described pressurizer includes pressure retaining valve, described pressure retaining valve offers and connects with described second steam channel
Exhaust hole；
Described pressure relief device includes relief valve, described relief valve offers and connects with described first steam channel
Exhaust hole, and the aperture of the exhaust hole of described pressure retaining valve is less than the aperture of exhaust hole of described relief valve.
Rice cooker upper cover the most according to claim 3, it is characterised in that described relief valve includes:
Valve seat, described valve seat is installed on described upper cover body, and described valve seat is provided with and steams with described first
The described exhaust hole that vapour passage is connected；With
Spool, described spool is arranged in described valve seat, and is blocked by the described exhaust hole on described valve seat,
Described in described spool can be opened on described valve seat under the drive of the described push rod of described positive opening mechanism
Exhaust hole.
Rice cooker upper cover the most according to claim 4, it is characterised in that
Described relief valve is adopted made of plastic, and described relief valve is provided with pressue device.
Rice cooker upper cover the most according to claim 2, it is characterised in that
The sectional area of described second steam channel is less than the sectional area of described first steam channel.
Rice cooker upper cover the most according to claim 6, it is characterised in that described pressure relief device includes:
Valve body, described valve body is arranged on described upper cover body, and can block described first steam channel；With
Bull stick, described bull stick one end is fixing with described valve body to be connected, and the other end is articulated on described upper cover body；
Described bull stick can drive described valve body to rotate under the effect of the described push rod of described positive opening mechanism,
To open described first steam channel.
Rice cooker upper cover the most according to claim 6, it is characterised in that described pressure relief device includes:
Bonnet, described bonnet, is positioned at the exit of described first steam channel；
Bottom flange, described bottom flange is positioned at the porch of described first steam channel；With
Connecting rod, described connecting rod pass described first steam channel, and the two ends of described connecting rod respectively with
Described bonnet, is connected with described bottom flange；
When the described push rod of described positive opening mechanism applies active force to described bonnet, described bonnet, leads to
Crossing described connecting rod makes described bottom flange cover the entrance of described first steam channel；Described positive opening mechanism
Described push rod weaken or disappear to described bonnet, apply active force time, under gravity, described
Bottom flange departs from the entrance of described first steam channel, opens described first steam channel.
Rice cooker upper cover the most according to claim 6, it is characterised in that described pressure relief device includes:
Flexible Connector；With
Valve body, described valve body is arranged on described upper cover body by described Flexible Connector；
When the described push rod of described positive opening mechanism applies active force to described valve body, described valve body extrudes institute
Stating Flexible Connector makes described body cap residence state the first steam channel；Push away described in described positive opening mechanism
When bar weakens or disappears to described valve body applying active force, under the elastic force effect of described Flexible Connector,
Described first steam channel is opened by described valve body.
Rice cooker upper cover the most according to claim 7, it is characterised in that also include:
Resetting-mechanism, described resetting-mechanism is connected with described pressure relief device, does not makees in described positive opening mechanism
Described pressure relief device is resetted to close described first steam channel by the used time.
11. rice cooker upper covers according to any one of claim 1 to 9, it is characterised in that described control
Device processed includes:
Detecting element, described detecting element can steam in the rapid heat-up stage of described electric cooker detects electric cooker
The temperature of vapour, and described detecting element is connected with control unit, and the temperature signal detected can be transferred to
Described control unit；With
Control unit, the described temperature signal received is compared by described control unit with preset value, and
According to comparative result, control described positive opening mechanism in the range of default duration, will with default frequency
Described pressure relief device is opened.
12. rice cooker upper covers according to claim 11, it is characterised in that
Described detecting element includes temperature sensor.
13. 1 kinds of electric cookers, it is characterised in that including:
Cooker body；With
Rice cooker upper cover as according to any one of claim 1 to 12, described rice cooker upper cover is articulated in institute
State in cooker body.
14. electric cookers according to claim 13, it is characterised in that the upper cover of described rice cooker upper cover
Body includes:
Cover, described cover is provided with steam (vapor) outlet；With
Cover plate, described cover plate is arranged on the lower section of described cover, and described cover plate is provided with and goes out with described steam
First steam channel of mouth connection and the second steam channel, controller is arranged on described cover plate.
The control method of pressure in 15. 1 kinds of electric cookers, for controlling the electricity as described in claim 13 or 14
Rice cooker, it is characterised in that the pressure in described electric cooker is carried out by the rapid heat-up stage at described electric cooker
Control, comprise the following steps:
Step S102, the temperature of steam in the detecting element described electric cooker of detection；
Step S104, the described temperature detected is compared by control unit with setting value, and according to comparing
Pressure relief device on described rice cooker upper cover is opened by output control positive opening mechanism, to control described electricity meal
Pressure in pot.
The control method of pressure in 16. electric cookers according to claim 15, it is characterised in that in institute
State in step S104,
Described control unit controls described positive opening mechanism in the range of default duration, with default frequency
Described pressure relief device is opened.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410035389.3A CN103784024B (en) | 2014-01-24 | 2014-01-24 | The control method of pressure in rice cooker upper cover, electric cooker and electric cooker |
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| CN201410035389.3A CN103784024B (en) | 2014-01-24 | 2014-01-24 | The control method of pressure in rice cooker upper cover, electric cooker and electric cooker |
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| CN103784024B true CN103784024B (en) | 2016-09-07 |
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Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105982513A (en) * | 2015-02-13 | 2016-10-05 | 佛山市顺德区美的电热电器制造有限公司 | Electric pan, an upper cover thereof and control method |
| CN104921613B (en) * | 2015-07-06 | 2018-01-26 | 广东美的厨房电器制造有限公司 | Steam cooking apparatus and its steam exhaust device |
| CN106551612B (en) * | 2015-09-25 | 2019-12-31 | 佛山市顺德区美的电热电器制造有限公司 | Electric cooker and cooking control method thereof |
| CN106551615B (en) * | 2015-09-25 | 2021-07-20 | 佛山市顺德区美的电热电器制造有限公司 | Electric cooker and cooking control method thereof |
| CN106551609B (en) * | 2015-09-25 | 2019-03-12 | 佛山市顺德区美的电热电器制造有限公司 | The control method of cooking apparatus |
| CN106551619B (en) * | 2015-09-25 | 2018-12-18 | 佛山市顺德区美的电热电器制造有限公司 | The cooking control method of electric cooker and electric cooker |
| CN106551616B (en) * | 2015-09-25 | 2021-04-20 | 佛山市顺德区美的电热电器制造有限公司 | Electric cooker and cooking control method thereof |
| CN106551610B (en) * | 2015-09-25 | 2019-04-26 | 佛山市顺德区美的电热电器制造有限公司 | The method for heating and controlling of cooking apparatus |
| WO2018058384A1 (en) * | 2016-09-28 | 2018-04-05 | 佛山市顺德区美的电热电器制造有限公司 | Electric rice cooker and cooking control method thereof |
| CN106175418B (en) * | 2016-09-28 | 2019-01-11 | 佛山市顺德区美的电热电器制造有限公司 | Electric cooker and its cooking control method |
| CN108272338B (en) * | 2017-01-05 | 2020-05-05 | 佛山市顺德区美的电热电器制造有限公司 | Pressure cooking appliance and pressure detection method and device thereof |
| CN110115479B (en) * | 2018-02-06 | 2021-11-23 | 广东美的生活电器制造有限公司 | Pressure relief assembly and food processor |
| CN109124330A (en) * | 2018-05-10 | 2019-01-04 | 浙江苏泊尔家电制造有限公司 | Cooking apparatus and control method for cooking apparatus |
| CN111109998B (en) * | 2018-10-31 | 2022-10-21 | 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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| CN103784024A (en) | 2014-05-14 |
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