CN1689491A - Rice cooker - Google Patents
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- CN1689491A CN1689491A CN 200510068962 CN200510068962A CN1689491A CN 1689491 A CN1689491 A CN 1689491A CN 200510068962 CN200510068962 CN 200510068962 CN 200510068962 A CN200510068962 A CN 200510068962A CN 1689491 A CN1689491 A CN 1689491A
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Abstract
This rice cooker is equipped with a pot to house water and rice, a heating means, a pressure valve to make the inside of the pot communicate with the outside air or cut off, and a control means for the heating means and the pressure valve. The rice to be cooked is processed by a starting-up process to rapidly heat rice and then a boiling keeping process wherein the rice to be cooked is heated by the heating means when the pressure valve is open.The invention provides a rice cooker in which rice can be sufficiently agitated during boiling and uniformly cooked, and the upper face of cooked rice is flat causing visual artistic effect after rice is completely cooked.
Description
Technical field
The present invention relates to a kind of making is in pressurized state in the pot and cooks and the pressure type cooker of cooked good to eat rice at short notice thus.
Background technology
The pressure type cooker is general through the cooked rice of following each operation, even the suction operation that rice absorbs water in pot, make heating arrangements be in full power state after the rice suction and heat hastily, heat up and finally reach the heating process of fluidized state, make the boiling that in above-mentioned operation, keeps this fluidized state in the pressurized pot and continue to boil rice keep operation and keep the steaming that operation finishes to steam rice in the back in above-mentioned boiling and boil in a covered pot over a slow fire operation.
The speciality of this cooker is: when cooking, before boiling beginning or improve pot inner pressure in the boiling process, make water soak into the grain of rice at short notice under the synergism of heating and pressure especially, the rice of the cooked softness of result is cooked the time in shortening.
So, in nearest cooker, what just becoming main flow is load coil to be installed and to be utilized the cooker of the vortex flow that this coil produces, promptly so-called IH cooker in the periphery of pot.But because the structure of this cooker is to make a pot self-heating, so, and fully do not heated the generation inequality of cooking although can fully heat the rice of the madial wall of adjacent pot away from the rice from the central portion of pot to central upper of madial wall.
In addition, adopt the mode different and in, adorned the heating plate driving fit of the heater that long ago just becomes commercialized at the board-like cooker of the heating in the bottom of a pan with the IH cooker, at the bottom of heater heating whole cooker, pot bottom is concentrated heating, so in pot, occur the inequality of cooking sometimes, on rice, form chevron when cooked, can't integral body cooked equably.
Therefore, the applicant has carried out all improvement in order to solve the problem that above-mentioned cooker exists to this kind cooker, for up to the present a lot of improvement result applications patent (for example with reference to following patent documentation 1,2).
Disclosed cooker is to shorten the time of cooking, make the rice cooker in good condition after cooked in the following patent documentation 1, this cooker has the pot of putting into rice to be cooked, the heating source that heats this pot, regulates the pressure apparatus of pot inner pressure, in a series of operations of cooking of preheating procedure, heating process, boiling operation, the pressure state in the pot is maintained authorized pressure by this pressure apparatus, make its suction, intensification of carrying out the rice in preheating procedure well, the suction in each operation of seething with excitement and heat conduction.
In addition, disclosed cooker has controlling organization in following patent documentation 2, rice to be cooked make pot by this controlling organization in reaches the boiling of boiling temperature to be kept in the operation, open pressure valve by pressure texture and control the pot inner pressure that changes in the boiling, be the so-called phenomenon vigorous stirring grain of rice that boils that traces back by boiling phenomenon thus, and make it to beat, mix and cooked simultaneously.
Patent documentation 1: the spy opens flat 6-22710 communique (Fig. 1, paragraph [0005]～[0009])
Patent documentation 2: the spy opens 2004-81824 communique (Fig. 2, summary)
Summary of the invention
Can cook good to eat rice by these cookers.But, through further research, exploitation, found that better improvement point afterwards.Therefore, the present invention relates to the improved invention of this cooker, the purpose of this invention is to provide a kind of cooker, it is characterized in that, can fully stir the rice in the boiling and cook rice uniformly, make the top smooth of cooked back rice simultaneously and can produce visual delicious effect.
In addition, particularly in the amount of cooking more for a long time, occur the inequality of cooking easily, and be difficult to make above the well-done rice smooth, another object of the present invention is to provide a kind of cooker, no matter the amount of cooking is many or few for they, can both make above the rice after cooked smooth.
In order to achieve the above object, cooker described in one of invention of the application, it is characterized in that, have: the pot of accommodating the rice to be cooked that comprises water and rice, heat the heating arrangements of the rice to be cooked in this pot, cover the lid of the peristome of this pot, have be communicated with or the blocking-up pot in and outer gas so that the pressure valve of the roughly certain construction of switch of the interior pressure of this pot, with this pressure valve opening relationships and forcibly this pressure valve is in the pressure valve open architecture of open mode, at the controlling organization that carries out the switch control of above-mentioned pressure valve in the heat that adds of the above-mentioned heating arrangements of control;
The program that above-mentioned controlling organization has is after sharply the heating process of the above-mentioned rice to be cooked of heating finishes, through making the boiling that maintains certain pressure in the above-mentioned pot keep operation when the insulation operation is divided a word with a hyphen at the end of a line, keep in the operation in above-mentioned boiling, when above-mentioned pressure valve is open, make above-mentioned heating arrangements work, heat above-mentioned rice to be cooked.
In addition, the present invention two described in invention, about the described cooker of one of the present invention, it is characterized in that, the pressure valve open hour that above-mentioned controlling organization is kept above-mentioned boiling in the operation are set at the stipulated time, close above-mentioned pressure valve after this development time finishes.
In addition, the present invention three described in invention, two described cookers about the present invention, it is characterized in that, after above-mentioned pressure valve is closed, heat above-mentioned rice to be cooked and above-mentioned pot inner pressure is added to certain pressure with above-mentioned heating arrangements, keep this pressure at the appointed time after reaching certain pressure.
In addition, the present invention four described in invention, about the described cooker of one of the present invention, it is characterized in that, keep in the operation and when forcibly not carrying out opening action, above-mentioned pot inner pressure is maintained 1.1～1.4 atmospheric pressure when above-mentioned pressure valve is in boiling in above-mentioned pot by above-mentioned pressure valve open architecture.
In addition, the present invention five described in invention, two described cookers about the present invention is characterized in that, in the open hour that the above-mentioned pressure valve in the operation is kept in above-mentioned boiling, are configured to above-mentioned pot inner pressure and are reduced near atmospheric degree.
In addition, the present invention six described in invention, two described cookers about the present invention is characterized in that, the switch number of times of keeping the above-mentioned pressure valve in the operation in above-mentioned boiling is set to 1～10 time.
In addition, the present invention seven described in invention, about the described cooker of one of the present invention, it is characterized in that, in above-mentioned pot, be provided with the fluidized state that detects above-mentioned rice to be cooked boiling testing agency and to after the boiling detection that utilizes this boiling testing agency the timer counted of stipulated time, after the counting of above-mentioned timer finishes, make the work of above-mentioned pressure valve open architecture and make pressure valve open.
In addition, the present invention eight described in invention, about one of the present invention or two described cookers, it is characterized in that, in above-mentioned pot, the amount of the cooking storing mechanism of cooking the amount detection machine structure and the amount of cooking that amount detection machine structure of cooking by this is detected being stored that the amount of cooking in the pot is detected is set; Keep in the operation the heat that adds in above-mentioned boiling according to the above-mentioned heating arrangements of amount Data Control of the above-mentioned amount of cooking storing mechanism; When the above-mentioned amount of cooking is " greatly ", it is set to make in the counting of the stipulated time of above-mentioned timer and utilizes the heating of above-mentioned heating arrangements to begin, when the above-mentioned amount of cooking is " little ", its be set at least timer finish the stipulated time counting the moment or carve at this moment before, make and utilize the heating of above-mentioned heating arrangements to begin.
In addition, the present invention nine described in invention, about the described cooker of one of the present invention, it is characterized in that, above-mentioned pressure valve by be communicated with in the above-mentioned pot and the pressure port of outer air and when heating rice to be cooked in the operation is kept in above-mentioned boiling the ball of inaccessible above-mentioned pressure port constitute, utilize above-mentioned pressure valve construction of switch that above-mentioned ball is moved and open above-mentioned pressure port.
In addition, the present invention ten described in invention, nine described cookers about the present invention is characterized in that the aperture area of above-mentioned pressure port is 6mm
2～18mm
2
In addition, the present invention 11 described in invention, about the described cooker of one of the present invention, it is characterized in that, loading and unloading filter freely is installed in the bottom of above-mentioned pressure valve.
One of according to the present invention～three, the present invention is after sharply the heating process of heating rice to be cooked finishes,, the boiling that maintains certain pressure in the pot implements to be incubated the cooker of operation through being kept operation, by keep open pressure valve in the operation in boiling, pot inner pressure is sharply reduced and the stirring grain of rice, be positioned at the grain of rice of central portion and the grain of rice on the madial wall in the mixing kettle, can all grain of rices in the pot be evenly heated, so can cooked equably rice.
Particularly, by when pressure valve open and pot inner pressure heating rice to be cooked when reducing, make the quicker reduction more sharp of pot inner pressure, the grain of rice in the agitated kettle more broadly, all grain of rices in the even heating kettle, on well-done rice to be cooked the hole of formation prescribed level, be called as the hole (stream-hole) behind the eliminating steam in so-called crab shape hole, produce and seem good to eat visual effect.
In addition, keep open pressure valve in the operation in boiling, certainly when open, heat rice to be cooked, beat and when passing through the open hour of predesignating, the occlusion pressure valve, so can keep and proceed heating when pot inner pressure in the operation is certain pressure keeping boiling, can cook does not have half-cooked rice.
Equally, after the pressure valve obturation, heat rice to be cooked and be forced into certain pressure, and keep this pressure at the appointed time, feasible all deliquescing of central part until core so can utilize pressure and heat fully to heat the grain of rice.
According to the present invention four, five, when pressure valve is kept in the operation when open in boiling, pot inner pressure maintains 1.1～1.4 atmospheric pressure, so by making pot inner pressure in this scope, can utilize wallop (trace back and boil) to stir the grain of rice more intensely, make that rice is so-called to be mixed while beating and then can cooked rice.
That is, the pot inner pressure in this scope, becoming is enough to finish experimental stirring and can carries out minimum pressure value that pressure cooks and along with rapid pressure changes (pressure reduction) and rice to be cooked can be from outbound maximum pressure value in the pot.
Then, the open hour that the pressure valve in the operation is kept in boiling, be set to that pot inner pressure is reduced to atmospheric pressure or near time of atmospheric pressure degree, so the pot inner pressure difference change when safety valve is inaccessible and when open is big, only when this difference is big, the grain of rice flows in pot, and mixing of the grain of rice becomes big, and heats more equably.
According to the present invention six, the present invention is set to 1～10 time cooker at the switch number of times that pressure valve in the operation is kept in boiling, so as long as the residual water in the pot is abundant, along with increasing mixing effect, number of times also increases, but, in this number of times scope, get final product for stirring fully in order to reduce residual amount and to obtain.Therefore, be under the situation of 1 time or 2 times at the switch number of times of pressure valve, can not obtain sufficient mixing effect.
According to the present invention seven, the initial opening operation of the pressure valve in the operation is kept in boiling, be set at after the counting of the stipulated time after the boiling that utilizes boiling testing agency detects, so be not open pressure valve after being right after the boiling detection, but make fluidized state open after the stable stipulated time, thereby can when the pressure of definite fluidized state is certain, carry out pressure and reduce, whenever can both when open pressure valve the first time, obtain stable stirring and mixing effect.
According to the present invention eight, when electric cooker of the present invention is " greatly " in the above-mentioned amount of cooking, in the counting process of afore mentioned rules time, begin heating, when the above-mentioned amount of cooking is " little ", in moment of the counting that finishes the stipulated time or begin heating during this period, so also corresponding so that adding heat and then obtaining good to eat rice during according to the amount of cooking control boiling must be heated rice to be cooked when pressure valve is opened with program, carry out pressure quickly and reduce, can reach stirring and mixing effect.
According to the present invention nine, when reducing pot inner pressure, make ball away from pressure port, pot inner pressure certainly from this pressure port quickly by pressure release to outer gas, and increase by the aperture area that makes pressure port, the open hour of pressure valve shorten, and set pot inner pressure and be higher than atmospheric pressure, thus when pressure valve is open, high pressure in the pot from the big pressure port of aperture area quickly by pressure release, to the synergism of the heating of rice to be cooked, carry out high efficiency mixing when bigger aperture area by pressure port and pressure valve are open.
According to the present invention ten, be set at 6～18mm by aperture area pressure port
2Scope can successfully be carried out the pressure adjustment in the pot.Wherein, if increase the aperture area of pressure port, can be quickly relieving pressure apace, not only dangerous but when increasing area, and moisture also by apace to the outside discharge, so preferred this scope.
According to the present invention 11, be provided with filter by bottom in pressure valve, when pressure valve was open, the grain of rice that quickly flows in pot was stoped by filter, can not disperse to the outside thus.
Description of drawings
Fig. 1 is the profile of the cooker of expression one embodiment of the present of invention.
Fig. 2 is the amplification profile of the pressure valve open architecture of presentation graphs 1.
Fig. 3 is the block diagram of local timing's device of expression controlling organization.
Fig. 4 is the control flow chart of expression cooker.
Fig. 5 is the control flow chart of expression cooker.
Fig. 6 is the control flow chart of expression cooker.
Fig. 7 is the control flow chart of expression cooker.
The switch of pot inner pressure, the cooking bottom temperature that Fig. 8 is the expression cooker each operation that begins from cooking till the insulation, vapor (steam) temperature, pressure valve regularly, the heating schematic diagram regularly of heating arrangements.
Fig. 9 is the schematic diagram of the part of expression enlarged drawing 8.
Among the figure: 1-cooker main body, 2-pot, 4-heating arrangements, 9-pressure port, the 11-ball, 14-pressure valve, 15-pressure valve construction of switch, 16-selection mechanism, the 18-controlling organization, 19a-temperature sensor (the amount detection machine structure of cooking), 19b-vapor sensor (boiling testing agency), 20-controlling organization.
The specific embodiment
Below, with reference to description of drawings preferred forms of the present invention.But below Biao Shi embodiment illustration is used to make the cooker that technological thought of the present invention is specialized, and is not to want the present invention to be suitable for too for other embodiment that is included in the technical scheme scope specific to this cooker.
Embodiment
Fig. 1 is the profile of the cooker of expression one embodiment of the present of invention, Fig. 2 is the amplification profile of the pressure valve open architecture of presentation graphs 1, Fig. 3 is the block diagram of local timing's device of the controlling organization of presentation graphs 1, Fig. 4 to Fig. 7 is the control flow chart of expression cooker, the switch of pot inner pressure, the cooking bottom temperature that Fig. 8 is the expression cooker each operation that begins from cooking till the insulation, vapor (steam) temperature, pressure valve regularly, the heating schematic diagram regularly of heating arrangements, Fig. 9 is the schematic diagram of the part of expression enlarged drawing 8.
Cooker of the present invention has a plurality of processes of cooking according to the kind and the well-done state of rice, as " rice/common ", " rice/sweet sour meal " and " unpolished rice/common " at least three processes of cooking substantially, and then outside cooking process substantially, this also has processes such as " rice/quick ", " rice/application ", " congee ".In the present embodiment, " rice/common " program of cooking that frequency of utilization is the highest in these programs of cooking is described.
The structure of cooker at first is described.
In Fig. 1, Fig. 2, the 1st, the cooker main body, the 2nd, the pot of making by aluminium and stainless bimetal of holding water and rice, the 3rd, take in pot 2 shell, the 4th, be installed in the lateral wall of shell 3 and the heating arrangements of exterior bottom wall.As this heating arrangements, for example use induction coil.
The 5th, the switch lid freely of the peristome 6 of covering pot 2 is made of with the enclosing cover 8 that is located at its top the loading and unloading that are located at downside inner cap 7 freely.
As shown in Figure 2, on inner cap 7, be provided with pressure valve 14, possess by having the construction of switch 18 that valve seat 10 that pressure port 9 is arranged, the metallic ball 11 by focusing on occlusion pressure hole 9 on this valve seat 10 certainly and the cover 12 that covers this ball 11 constitute.This pressure valve 14 makes ball 11 move to or leave pressure port 9 by the balance between the deadweight of pressure in the pot 2 and ball 11, and then the mobile switch that carries out pressure port 9 by this ball 11.
In addition, possess safety valve 9a on inner cap 8, when being pressurizeed unusually in the pot 2, for example pressure valve 14 breaks down and when open in the process of cooking, the open also discharging of this safety valve 9a pot inner pressure (with reference to Fig. 1).
As shown in Figure 1 and Figure 2, on the pressure valve 14 in enclosing cover 8 plunger 17 is installed, these plunger 17 controlled mechanisms 20 controls.That is, when plunger 17 did not have to receive output from controlling organization 20, bar 17a was outstanding from cylinder 17b, the ball 11 on the transverse direction pushing force hole 9 of pressure port 9, mandatory open pressure port 9.In addition, when plunger 17 received the output of controlling organization 20, bar 17a was drawn in the cylinder 17b.This moment, ball 11 was got back on the pressure port 9 occlusion pressure hole 9 by deadweight.
Like this, plunger 17 is used as the open architecture of pressure valve and moves, and by this opening operation, the pressure in the pot pressurized in the operation of cooking is descended.
In enclosing cover 8, have by pressure port 9 make pot 2 that is communicated with atmosphere, pots 2 interior pressure and the steam leakage steam port 15 in the atmosphere.
As shown in Figure 1, cooker main body 1 possesses the selection mechanism 16 that is used to select the above-mentioned program of cooking.
The software that controlling organization 20 constitutes ground hardware by institutes such as CPU, ROM, RAM as everyone knows and is used to implement flow chart content described later constitutes.
As shown in Figure 1, the function of bringing into play the amount detection machine structure of cooking and the temperature sensor 19b that is used to detect cooking bottom temperature are installed in the bottom of pot 2, the vapor sensor 19a that becomes the boiling testing agency of detecting vapor (steam) temperature is installed on the appropriate location of lid 8 in addition, and the output of each sensor 19a, 19b is sent to controlling organization 20.Wherein, be known content according to the amount of cooking in the output detection pot of temperature sensor, so omit to its detailed description.
As shown in Figure 1 and Figure 2, be equipped with in the bottom of above-mentioned pressure valve 14 in freely mode of loading and unloading and be installed on the valve seat 10 and worn the filter 21 of a plurality of apertures.By this filter 21 is installed, when pressure valve 14 was opened, the grain of rice that flows in pot was stoped by this filter 21 quickly, and can prevent that it is discharged in the outer gas.
With reference to Fig. 3 controlling organization 20 is described.
The 22nd, reach 75 when spending when above-mentioned vapor sensor 19a detects the vapor (steam) temperature that produces in pot, receive as the signal of boiling beginning temperature and count the 1st timer of fixed predetermined (t1=12 second).
The 23rd, receive the 2nd timer that temperature signal that the boiling by above-mentioned vapor sensor 19a begins carries out the counting of (t1)+(open hour T)=16 seconds.
The 24th, the 3rd timer of after the counting of stipulated time (12 seconds) of above-mentioned the 1st timer 22, certain hour (t3=32 second) being counted, the 25th, receive temperature signal that the boiling by above-mentioned vapor sensor 19a begins and the 4th timer that the time t4 that begins to heat that passes through heating arrangements 4 after keeping operation up to the boiling of dividing a word with a hyphen at the end of a line is carried out timing.
The 26th, after counting in 2 pairs of stipulated times of above-mentioned the 1st timer 2 (t1=12 second) and the decompression timer that the open hour (T=4 second) of pressure valve 14 are counted.
The 27th, judge the amount of the cooking storing mechanism that the amount of cooking is stored the amount of the cooking data of judging simultaneously according to the temperature that is detected by said temperature sensor 19b, the 28th, signal when receiving boiling by above-mentioned vapor sensor 19b and detecting and the arithmetical organ that carries out computing from the amount of the cooking data of storage the above-mentioned amount of cooking storing mechanism 27, specifically, become the basis that the time t4 to heating beginning to above-mentioned the 4th timer 25 sets.
The 29th, set set mechanism heat time heating time of heat time heating time according to the output of above-mentioned arithmetical organ 28, according to the amount of cooking, the output of arithmetical organ makes by the time t4 to the heating beginning of the 4th timer 25 variable.For example, be under the situation of " greatly " in the amount of cooking, be set to the heat that adds in the synchronous moment of counting with the open hour (T=4 second) more greatly, t4a was made as 3 seconds.In the amount of cooking be " in " situation under, be set to the heat that adds in the synchronous moment of counting with the open hour (T=4 second) moderately, t4b was made as 6 seconds.In the amount of cooking is under the situation of " little ", is set to less degree the heat that adds in the synchronous moment of counting with the open hour (T=4 second), and t4c was made as 9 seconds.
Promptly, the time to the counting t4 that begins to count to heating of the 4th timer 2 of counting after boiling detects 5 becomes 3 seconds (amount of cooking " greatly ")～9 seconds (amount of cooking " little "), the counting of t4 become 7 seconds afterwards the heat time heating time till the counting of open hour (T=4 second) of pressure valve 14 (amount of cooking " greatly ")～13 seconds (amount of cooking " little ").
Certainly, the amount of cooking storing mechanism 27 have the amount of cooking " greatly " and " in " between, " in " and " little " between etc. a plurality of fixed datas.
Then, about the operation of cooking, mainly describe with reference to Fig. 4～Fig. 7.In the present embodiment, in the process of cooking, selecting the situation of " rice/common " process to describe.
By the selection mechanism 16 of Fig. 1, when selecting the process of cooking of " rice/common ", make pot 2 heatings and heat the rice to be cooked that constitutes by rice in the pot and water with heating arrangements 4.At this moment, the bar 17a of plunger 17 is positioned at the right positions of Fig. 2, and pushes ball 11 and make pressure valve 14 become open state is carried out the suction operation (S2～S4) of rice under this state.
In this suction operation, by controlling organization 20 control heating arrangements 4 add heat so that cooking bottom temperature maintains about 55 degree, as shown in Figure 8, in 15 minutes, keep this operation (S5).
When 15 minutes suction operation (S5) finishes, make heating process 4 be in full power state, as shown in Figure 8, travel to the heating process (S6) of rapid heating rice to be cooked.In this heating process, bar 17a leaves ball 11 and clossing pressure valve 14, simultaneously judges the amount of cooking in the rapid heating period, and these amount of cooking data are stored into the amount of cooking storing mechanism 27 (S7～S8).Then, clossing pressure valve 14 (S9).
In this heating process, the closure (S9) by pressure valve 14 rises the bottom of a pan (in the pot) temperature and vapor (steam) temperature together with heating with full power, and pot inner pressure sharply rises simultaneously, becomes 1.2 atmospheric pressure.Then, when vapor sensor 19a detects 75 degree (cooking bottom temperature by temperature sensor 19b is 105 degree) that reach the boiling temperature (greatly) that becomes rice to be cooked (S10～S11), as shown in Figure 8, travelling to boiling and keeping operation, pot inner pressure is maintained 1.2 atmospheric pressure (S12～S13).But, 1.2 atmospheric pressure described here are meant the pressure when obtaining optimum in experiment, pot inner pressure is not limited to 1.2 atmospheric pressure, even for example in the atmospheric scope of 1.1 atmospheric pressure～1.4, change, also can obtain in fact and the same good effect of 1.2 atmospheric situations.
Here, with reference to Fig. 8, Fig. 9, illustrate in greater detail in boiling and keep action in the operation.
When vapor sensor 19a detects boiling temperature ((K)=75 degree), the IH power of heating arrangements 4 is made as " 0 " (with reference to Fig. 8, Fig. 9) (S14), simultaneously the 1st timer 22 begins to carry out the counting (S16) of stipulated time (t1=12 second), and 3 pairs of the 2nd timer 2s add that on the stipulated time of the 1st timer 22 time (t2=16 second) of the open hour (T) (=4 seconds) of pressure valve 14 sets simultaneously.That is, 16 seconds counting of the 2nd timer 23 beginning, (S17～S18) is counted in 2 pairs of the 1st timer 2s 12 seconds after and then the 2nd timer 23 begins to count simultaneously.In addition, the 3rd timer 24 of the switch periods of the 2nd timer 23 and set pressure valves 14 is set at 32 seconds (S19).
As a result, after vapor sensor 19a detected boiling temperature, during 2 pairs of the 1st timer 2s were counted in 12 seconds, pressure valve 14 became closure state, makes bar 17a work behind the counting at 12 seconds, open pressure valve 14 (with reference to Fig. 8, Fig. 9) in 4 seconds open hour.
As above-mentioned, when boiling detected, pot inner pressure was 1.2 atmospheric pressure, at 12 seconds that seethe with excitement after detecting, kept this pressure, and when through 12 seconds, pressure valve 14 is opened 4 seconds, releases pot inner pressure quickly.Through the pressure valve 14 in above-mentioned moment of 12 seconds open the time, heat with heating arrangements 4, so the interior rice to be cooked of agitated kettle 2 more intensely.
Here, for the heating timing of the heating arrangements 4 when pressure valve 14 is opened, describe in detail with reference to Fig. 5～Fig. 7.
When the boiling by vapor sensor 19a detects, set boiling according to the amount of cooking and keep and add heat (tQ heat time heating time) (S20) in the operation.This heat time heating time the amount of the cooking data judged when being based on heating process of setting of tQ and definite, when the amount of cooking is " greatly ", set tQa length heat time heating time, when the amount of cooking be " in " time, setting tQb heat time heating time is moderate, when the amount of cooking was " little ", setting tQc heat time heating time was for short.
5 pairs of the 4th timer 2s deduct time after above-mentioned heat time heating time of the tQ (t4=3～9 second) and count (S21) from the setting-up time (16 seconds) of the 2nd timer 23 that begins to count in the detection boiling back by above-mentioned vapor sensor 19a, when the amount of cooking is " greatly ", heat behind the counting of stipulated time (t4a=3 second) after boiling detects, when the amount of cooking be " in " time, heat behind the counting of stipulated time (t4b=6 second) after boiling detects, when the amount of cooking be " little " and the time, heat behind the counting of the stipulated time (t4c=9 second) after boiling detects.
Secondly, with reference to the amount of cooking data (S22), when the amount of cooking be " in " time, the 4th timer 25 that begins to count after the boiling detection carries out 6 seconds counting (S23～S25).Therebetween, pressure valve 14 closures, the heating of heating arrangements 4 also stops.
When the 4th timer 25 finishes 6 seconds counting (S26), make heating arrangements 4 work with total power, heat in during heat time heating time (tQb=10 second) (S27～S28).
Here, the counting tQb heat time heating time moment afterwards and 12 seconds the moment of counting consistent (S29) of the 1st timer 22.
The output that the counting of the 1st timer 22 finishes begins 4 seconds counting of decompression timer 26, makes bar 17a work simultaneously, ball 11 is moved and leaves and open pressure valve 14 (S31) from pressure port 9.The open hour of pressure valve 14 are than 10 seconds weak points of tQb, so in the open process of pressure valve, heating arrangements 4 is with heating with full power.Then, open 4 seconds, make pot inner pressure be reduced to about 1 atmospheric pressure (S32) sharp by making pressure valve 14.This moment by when pressure valve 14 is open with the heating with full power rice to be cooked, the rice to be cooked in the agitated kettle 2 more intensely.
That is, the heating with full power of the heating arrangements 4 when 4 seconds open hour of pressure valve 14 and pressure valve are open makes pot inner pressure be reduced to 1.0 atmospheric pressure from 1.2 atmospheric pressure sharp, and the Mi Heshui in the pot flows significantly, is promptly stirred intensely.
Certainly, the aperture area of the pressure port 9 of this moment also is set to and is used to promote its rapid pressure to reduce, set the open hour (T=4 second) and the pot inner pressure P of its aperture area A, pressure valve, make that the big more A of P is also big more, and the steam (moisture) of open hour T in exceeding this pot in case of necessity be not released to outside in the gas.
If open hour T is quite short for example about 1 second, can't be reduced to 1.0 atmospheric pressure degree from 1.2 atmospheric pressure quickly, if it is opposite quite long for example more than 5 seconds, reduce although can carry out rapid pressure, but still can't guarantee to emit pot interior steam (moisture) in a large number and carry out repeatedly pressure and reduce the necessary pot of interior water yield.
Therefore, for the open hour T=4 second of present embodiment, experimental result as can be known, except the aperture area A that increases pressure port 9, open pressure valve 14 when pot inner pressure being maintained 1.2 atmospheric pressure, reduce to carry out rapid pressure, carry out this pressure reduction and 1.2 atmospheric pressure simultaneously repeatedly and keep, this number of occurrence reaches as high as 10 times.
Preferred 6～the 18mm of the aperture area of this pressure port 9
2, preferred especially 12mm
2The front and back of (the diameter 3.6mm degree of pressure port 9) and this numerical value.If increase this area, can release pressure fast quickly, if but area is bigger, and not only dangerous, and moisture also is discharged into the outside apace, so preferred this numerical value.
In addition, the switch number of times of pressure valve is preferred 1～10 time.As long as the residual water in the pot is abundant, increase number of times and also can strengthen mixing effect, but under the switch number of times has once situation at least, still have sufficient residual water and occur stirring.So, the switch number of times of the maximum of the necessary residual amount of acquisition stirring is 10 times.
Then, when during second (S33), in clossing pressure valve 14, the power of heating arrangements 4 being made as " 0 " (S34～S35), utilize the interior waste heat of pot that pot inner pressure is risen through open hour T=4.
When pressure in this pot rose, the 4th timer 25 began counting, when to the above-mentioned amount of cooking for " in " time time (t4b=6 second) when counting, during heat time heating time (tQb=10 second) in, with heating arrangements 4 heating.
After, the switch (S36) that carries out 6 pressure valve 14 repeatedly afterwards, under the state of clossing pressure valve 14, heating arrangements was heated for " total power " during (tQb=10 second) for " 0 " during above-mentioned (t4b=6 second), keep fluidized state simultaneously, when cooking bottom temperature reaches 130, travel to and steam stewing operation 1.
Steam stewing operation 1 be meant keep the bottom of a pan (in the pot) temperature under than higher state in, steam stewing operation (S37).
Steaming after stewing operation 1 finishes, travelling to heating arrangements and rice to be cooked is carried out the heating of time of some length and the operation of cooking in addition (S38) that redundant moisture is dispersed.
After other cooks the operation end, travel to by the low some temperature of kettle temperature and steam stewing steamed rice operation 2 (S39) than the stewing operation 1 of above-mentioned steaming.
, travel to insulation operation, finish a series of operation of cooking (S40) thereafter.
In above-mentioned (S22), be under the situation of " greatly " in the amount of cooking data, travel to (S41), the 4th timer 25 that begins to count after boiling detects carries out 3 seconds counting (S42), (S43).Therebetween, pressure valve 14 closures do not heat yet.
When the 4th timer 25 counting in the time of 3 seconds (S44), carry out heating with full power with heating arrangements, heat in during heat time heating time (tQa=13 second) (S45～S46).
During the counting that carries out (tQa=13 second), certainly heat with heating arrangements, and this heating stage before to be the zero hour 12 seconds counting by the 1st timer 22 finish fully heats measuring many rice to be cooked, prepares during for pressure valve 14 open.Carry out later on the above-mentioned amount of cooking for " in " time the same action.
When the above-mentioned amount of cooking data are " little " (S47), the 4th timer 25 that begins to count after boiling detects carries out the counting (S48～S49) of (t4c=9 second).Therebetween, pressure valve 14 closures do not heat.
When the 4th timer 25 carries out the counting of (t4c=9 second) (S50), carry out heating with full power with heating arrangements, heat in during heat time heating time (tQc=7 second) (S51～S52).Carry out later on and above-mentioned the same action.
As above-mentioned, the present invention is after sharply the heating process of heating rice to be cooked finishes, keep operation and implement to be incubated the cooker of operation through the boiling that pot inner pressure is remained on certain pressure, open pressure valve sharply descends the pressure in the pot in the operation but by keeping in this boiling, can stir the grain of rice, mix the grain of rice that is positioned at the pot central portion and the grain of rice that is positioned at madial wall, all grain of rices in the pot are evenly heated, so can cooked equably rice.
When the pot inner pressure when pressure valve is open reduces especially, by the heating rice to be cooked, the grain of rice in the agitated kettle by a larger margin, so even all grain of rices in the heating kettle, the hole of formation prescribed level promptly is called as the hole (stream-hole) behind the eliminating steam in so-called crab hole on well-done rice to be cooked, has the visual effect that seems good to eat.
In addition, keep open pressure valve in the operation in boiling, certainly heat rice to be cooked after when this opening, and when passing through the open hour of predesignating, become the state of occlusion pressure valve, so will maintain certain pressure at the pot inner pressure that boiling is kept in the operation, proceed heating simultaneously, can boil and become not have half-cooked rice.
Equally, after pressure valve was closed, the heating rice to be cooked also was forced into certain pressure, keeps this pressure at the appointed time, so utilize pressure and heat fully to heat the grain of rice until the central part deliquescing of core.In addition, pressure valve is kept in the operation when open in boiling, pot inner pressure is maintained 1.2 atmospheric pressure, so by making pot inner pressure in this scope, can fully carry out the stirring of rising by tracing back.
Wherein, in the present embodiment, having used induction coil in heating arrangements 4, but be not limited to such heating arrangements, also can be heating arrangements or other mode of heating that the interior heating plate of having adorned heater is installed in the bottom of a pan.In addition, the pressure valve closing organ then can be the mechanism by mechanism performance function if can forcibly open the structure of valve from the pressure valve closing state, also can be the mechanism by electromagnetic action performance function.
Claims (11)
1, a kind of cooker is characterized in that: possess:
Accommodate the rice to be cooked that comprises water and rice pot, heat the rice to be cooked in this pot heating arrangements, cover the peristome of this pot lid, have be communicated with or the blocking-up pot in and outer gas so that the pressure valve of the roughly certain construction of switch of this pot inner pressure, set up connection with this pressure valve and forcibly make this pressure valve be in open mode the pressure valve open architecture, controlling the controlling organization that switch that adding of described heating arrangements carry out described pressure valve in the heat is controlled
The program that described controlling organization has is: after sharply the heating process of the described rice to be cooked of heating finishes, keep operation through making the boiling that remains on certain pressure in the described pot, and when the insulation operation is divided a word with a hyphen at the end of a line, keep in the operation in described boiling, when described pressure valve is open, make described heating arrangements work, heat described rice to be cooked.
2, cooker according to claim 1 is characterized in that,
The open hour that described controlling organization is kept the pressure valve in the operation to described boiling are set at the stipulated time, finish the inaccessible described pressure valve in back in these open hour.
3, cooker according to claim 2 is characterized in that,
After described pressure valve obturation, heat described rice to be cooked with described heating arrangements, and described pot inner pressure is added to certain pressure, after reaching certain pressure, keep this pressure at the appointed time.
4, cooker according to claim 1 is characterized in that,
Being in boiling in described pot keeps in the operation and when forcibly described pressure valve not being carried out opening action by described pressure valve open architecture, described pressure valve makes described pot inner pressure maintain 1.1～1.4 atmospheric pressure.
5, cooker according to claim 2 is characterized in that,
The open hour of keeping the described pressure valve in the operation in described boiling are to be configured to make described pot inner pressure to be low to moderate near atmospheric degree.
6. cooker according to claim 2 is characterized in that,
Keep in the operation in described boiling, the switch number of times of described pressure valve is set to 1～10 time.
7. cooker according to claim 1 is characterized in that,
The boiling testing agency and the timer to counting by the stipulated time after the boiling detection of this boiling testing agency of the fluidized state that detects described rice to be cooked are set in described pot, after the counting of described timer finishes, make the work of described pressure valve open architecture, and make pressure valve open.
8. according to claim 1 or 2 described cookers, it is characterized in that,
The amount of the cooking storing mechanism of cooking the amount detection machine structure and the amount of cooking that amount detection machine structure of cooking by this detects being stored of the amount of cooking that detects in the pot is set in described pot, keep in the operation the heat that adds in described boiling according to the described heating arrangements of amount Data Control of the described amount of cooking storing mechanism, when the described amount of cooking is " greatly ", in the counting of stipulated time of described timer, begin heating by described heating arrangements, when the described amount of cooking is " little ", at least timer finish the stipulated time counting the moment or begin heating during this period by described heating arrangements.
9. cooker according to claim 1 is characterized in that,
Described pressure valve by be communicated with in the described pot and the pressure port of outer gas and when the heating of the rice to be cooked in the operation is kept in described boiling the ball of the described pressure port of obturation constitute, by described pressure valve construction of switch described ball is moved and opens described pressure port.
10. cooker according to claim 9 is characterized in that,
The aperture area of described pressure port is 6mm
2～18mm
2
11. cooker according to claim 1 is characterized in that,
Loading and unloading filter freely is installed in the bottom of described pressure valve.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004132929 | 2004-04-28 | ||
| JP2004132929 | 2004-04-28 | ||
| JP2005027835 | 2005-02-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1689491A true CN1689491A (en) | 2005-11-02 |
Family
ID=35345477
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510068962 Pending CN1689491A (en) | 2004-04-28 | 2005-04-27 | Rice cooker |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP4873429B2 (en) |
| CN (1) | CN1689491A (en) |
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Also Published As
| Publication number | Publication date |
|---|---|
| JP2009154026A (en) | 2009-07-16 |
| JP4873429B2 (en) | 2012-02-08 |
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