CN105054773A - Freshness-preserving electric pressure cooker and air extraction control method thereof - Google Patents
Freshness-preserving electric pressure cooker and air extraction control method thereof Download PDFInfo
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Abstract
The invention relates to the technical field of electric pressure cookers and discloses a freshness-preserving electric pressure cooker. The cooker comprises a cooker body, an outer pot, an inner pot, a sealing ring, an outer lid and an inner lid, wherein a circumferential groove which is in the circle form and opens upward is formed in the outer side of a pot opening of the inner pot, the sealing ring comprises an upper lip piece and a lower lip piece, the upper lip piece is attached to the inner side of the inner lid, and when the inner lid is closed up, the lower lip piece extends into the circumferential groove; the inner lid is connected with a flexible pipe, and one end of the flexible pipe is communicated to the inner side of the inner lid in a sealed mode; a minisize vacuum pump is arranged in the cooker body, and the other end of the flexible pipe is communicated to the minisize vacuum pump; a pressure detection device used for detecting the pressure of gas inside the inner pot is arranged on the inner lid. By means of the freshness-preserving electric pressure cooker, the problem that food left in a cooker is short in freshness-preservation time is solved, the minisize vacuum pump is started, residual air in the cooker is extracted, the pressure in the cooker is lowered, so that the lower lip piece is closely attached to the inner side wall of the circumferential groove, air of the outside world cannot enter, the purpose of long-time freshness-preservation for residual food is achieved, the food does not need to be poured out additionally by a user for additional freshness preservation, and the cooker is greatly convenient for the user to use.
Description
Technical field
The present invention relates to electric pressure cooking saucepan technical field, more specifically relate to a kind of fresh-keeping electric pressure cooking saucepan and control method of bleeding thereof.
Background technology
Electric pressure cooking saucepan adopts electric hot tray to heat, and mode of heating is energy-efficient, and handling safety is reliable.From market manifestation, it instead of conventional pressure pot gradually.Electric pressure cooking saucepan is the upgrading products of optimizing integration of traditional pressure cooker and electric cooker, it has gathered the advantage of pressure cooker and electric cooker, electric energy is used to heat under the state sealed in pot, not only environmental protection but also convenient and swift, many-sided culinary art needs can be met, and the automatic-cooking of various modes is realized by Intelligent control circuit system, it is energy-conservation, quick, the characteristic of environmental protection is the direction that modern pursues.
Along with enriching of people's material conditions; sometimes user uses electric pressure cooking saucepan cooking food more; often some foods can be remained in pot after edible; throw away these foods and can think that some is wasted; if be placed in pot always; owing to remaining oxygen in pot; and the pot external and internal pressure sealing ring that causes in a basic balance cannot seal completely; air can free flow; within several hours, also easily cause food spoilage or stale and lose the original taste of food even if preserve, carry out sealing preserve or cold fresh preservation so generally can pour out.Two kinds of store methods all need food to pour out, and also need food to pour in pot to heat when again eating, especially cold fresh preservation needs to consume more energy heat food again, makes troubles to the use of user again.
Need a kind of electric pressure cooking saucepan can extracting residual air in pot out for this reason, also will keep sealing state in pot after extracting residual air out, but in prior art, there is no this type of electric pressure cooking saucepan and control method.
Summary of the invention
The present invention for overcoming above-mentioned deficiency of the prior art, and better obtains fresh-keeping effect and has started a kind of fresh-keeping electric pressure cooking saucepan and control method of bleeding thereof.
The present invention is achieved through the following technical solutions above-mentioned purpose.
A fresh-keeping electric pressure cooking saucepan, comprises a pot body, outer pot, interior pot, pot cover, control circuit, operation push-button, and wherein outer pot is supported in pot body, interior pot is placed in outer pot, and pot cover comprises enclosing cover and inner cap, and inner cap is placed in enclosing cover, enclosing cover is rotatablely fastened on outer pot, and inner cap is buckled on interior pot; The ring week groove of a circle opening upwards is provided with outside interior pot pot mouth, the outboard sidewalls of all grooves of ring is vertical, a sealing ring is provided with between inner cap and interior pot, sealing ring comprises upper labial plate and labial plate, inside upper labial plate laminating inner cap, labial plate is vertical annular ring, and when inner cap fastens, labial plate stretches in ring week groove, and the outboard sidewalls matched in clearance of labial plate and all grooves of ring; Inside cover and be connected with flexible pipe, the sealing of flexible pipe one end is communicated to inside inner cap; Be provided with minipump in pot body, the other end of flexible pipe is communicated to minipump; Inside cover the pressure-detecting device be provided with for detecting gas pressure inside interior pot.
Existing electric pressure cooking saucepan principle is identical when heating cooking with on the market for electric pressure cooking saucepan in this programme, the improvement of interior pot pot mouth structure and the flexible pipe of increase, minipump, the pressure-detecting device not sealing property of disintegration voltage power pot and the protective effect of other safety device.When heating cooking, minipump shutoff flexible pipe, pot inner pressure can not from hose pressure release; Pot inner pressure becomes the lateral wall that ambassador's sealing ring labial plate is close to interior pot ring week groove, makes to be in sealing state in pot; Interior pot is caused to move down when pot inner pressure is excessive; thus make sealing ring deviate from ring week groove; namely sealing ring and interior pot produce small gap, and high steam gushes out from gap and carries out pressure release, and the structure of the sealing ring therefore in this programme and interior pot does not have the original overpressure protection performance of disintegration voltage power pot yet.When there being leftover to need fresh-keeping in pot, cover pot cover, start minipump, extract the residual air in pot out, pot inner pressure diminishes simultaneously, ambient pressure makes sealing ring labial plate be close to the madial wall of interior pot ring week groove, make to be in sealing state in pot, outside air cannot enter, and reaches the object that leftover is fresh-keeping for a long time, leftover is poured out fresh-keeping separately without the need to user, greatly facilitate the use of user.
The control method of bleeding of above-mentioned fresh-keeping electric pressure cooking saucepan is as follows:
In S1, detection, inside pot, overhead gas force value is P kPa;
S2, the force value detected and 101 kPas are carried out subtraction draw difference in step S1, if the absolute value of difference is less than difference K kPa decided at the higher level but not officially announced, start minipump, micro vacuum pump operation stops after M minute running time first decided at the higher level but not officially announced, performs step S3;
If the absolute value of difference is greater than or equal to difference K kPa decided at the higher level but not officially announced, can not minipump be started and perform step S1 and S2 successively again after waiting for stand-by period X decided at the higher level but not officially announced minute;
S3, after preset interval time N minute, after the micro vacuum pump operation Q minute circular flow time decided at the higher level but not officially announced stop;
S4, step S3 circulation performs preset times H rear circuit disconnecting minipump.
Because under atmospheric environment, negative pressure is limited, high pressure is unlimited in theory, so negative-pressure sealing can not image height means of press seals can provide like that very large pressure to sealing ring is sealed very tight, if want that obtaining good negative-pressure sealing effect needs minipump to keep running always, but so consume electric energy very much, some is lost more than gain, this programme is started and a kind ofly can be interrupted the method for bleeding for this reason, both can save electric energy, fresh-keeping effect of well bleeding can be obtained again.First to detect the pressure in interior pot and compare with normal atmospheric pressure 101 kPas, if pressure difference value is large, illustrate that the gas pressure in pot is larger, food and gas temperature higher, now bleed, moisture in food can be vaporized out and be made the air pressure in interior pot increase fast, and sealing may be caused to lose efficacy very soon, and food also can be made to become dry and affect mouthfeel simultaneously.When equal pressure difference is less, minipump is run at interval again, to keep negative pressure state in pot as far as possible, namely keeps sealing state in pot, avoids outside air to enter, and then food and extend fresh keeping time.
Above-mentioned preset interval time N and preset times H is all set by operation push-button, and the scope of preset interval time N is 30 ~ 90, and preset interval time N is the integral multiple of 10, and the scope of preset times H is 1 ~ 10.Daily life is generally three meals in a day, so be generally half a day or one day interval time, number range in this programme can ensure that negative-pressure sealing state maintains one hour to tens hours, can meet daily need, simultaneously preset interval time N be 10 integral multiple facilitate user to set.
The scope of above-mentioned difference K decided at the higher level but not officially announced is 1 ~ 7, and above-mentioned running time first decided at the higher level but not officially announced, the scope of M was 3 ~ 5, and the scope of above-mentioned stand-by period X decided at the higher level but not officially announced is 10 ~ 30, and the scope of above-mentioned circular flow time Q decided at the higher level but not officially announced is 1 ~ 2.Pressure when running minipump first in interior pot equals or a little more than environmental pressure, minipump needs the time run longlyer just can reach vacuum effect for this reason, pressure again during operation minipump in interior pot has been negative pressure, just can continue to reduce the pressure in interior pot so can run the short period; Stand-by period X decided at the higher level but not officially announced can carry out Default Value according to region difference, makes this method better be applicable to the environment that electric pressure cooking saucepan makes land used.
Also comprise step S01 before above-mentioned step S1: perform step S1 after waiting for first stand-by period Y minute decided at the higher level but not officially announced, wherein the scope of first stand-by period Y decided at the higher level but not officially announced is 10 ~ 30.First wait for a period of time before above-mentioned method performs, after the pressure stability in interior pot, perform said method again, the number of times of detected pressures can be reduced, thus save electric energy further.
The present invention compared with prior art mainly has following beneficial effect: when having leftover in pot, carry out air suction process to be discharged by the air in pot, make the amount of oxygen in pot few, sealing in pot stops outside air to enter by the madial wall that simultaneously sealing ring labial plate is close to interior pot ring week groove, extends the fresh keeping time of leftover; Minipump need not be run always, save electric energy, and fresh-keeping effect of well bleeding can be obtained, be user-friendly to.
Accompanying drawing explanation
Fig. 1 is the cross-sectional view of the electric pressure cooking saucepan in the embodiment of the present invention.
Fig. 2 is the cross-sectional view of interior pot in the embodiment of the present invention.
Fig. 3 is the cross-sectional structure schematic diagram of sealing ring in the embodiment of the present invention.
Fig. 4 is the partial enlargement structural representation at B place in Fig. 1.
Fig. 5 is the step block diagram of control method of bleeding in the embodiment of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention will be further described.Accompanying drawing, only for exemplary illustration, can not be interpreted as the restriction to this patent.
In order to more succinct explanation the present embodiment, in accompanying drawing or explanation, some well known to a person skilled in the art but can omit to some extent with the incoherent parts of the main contents of this creation.In addition for ease of statement, in accompanying drawing, some parts has omission, zooms in or out, but does not represent size or the entire infrastructure of actual product.
Embodiment:
As shown in Figure 1, a kind of pot cover is hinged on the fresh-keeping electric pressure cooking saucepan on pot body by cantilever, comprise pot body 1, enclosing cover 2, inner cap 3, outer pot 4, interior pot 5, wherein outer pot 4 is supported in pot body 1, and interior pot 5 is placed in outer pot 4, inner cap 3 is placed in enclosing cover 2, enclosing cover 2 is rotatablely fastened on outer pot 4, and inner cap 3 is fastened on interior pot 5, is provided with a sealing ring 6 between inner cap 3 and interior pot 5, inner cap 3 is connected with flexible pipe 7, in pot body 1, is provided with interconnective gas magnetic valve 8 and minipump 9.The sealing of flexible pipe 7 one end is communicated to inside inner cap 3, and the other end is communicated to magnetic valve 8.
As shown in Figure 2, be provided with the ring week groove 501 of a circle opening upwards outside interior pot 5 pots of mouths, the outboard sidewalls of all grooves 501 of ring is vertical.
As shown in Figure 3, sealing ring 6 comprises upper labial plate 601 and labial plate 602, and labial plate 602 is vertical annular ring.
As shown in Figure 2, Figure 3 and Figure 4, sealing ring 6 upper labial plate 601 to be fitted inside inner cap 3 and is fixed on inner cap 3; When inner cap 3 fastens, labial plate 602 stretches in ring week groove 501, and the outboard sidewalls matched in clearance of labial plate 602 and all grooves 501 of ring.
Existing electric pressure cooking saucepan principle is identical when heating cooking with on the market for electric pressure cooking saucepan in the present embodiment, the flexible pipe 7 of increase, gas magnetic valve 8, the minipump 9 not sealing property of disintegration voltage power pot and the protective effect of other safety device.When heating cooking, gas magnetic valve 8 is in closed condition, and namely flexible pipe 7 is sealed condition, and pot inner pressure can not from flexible pipe 7 pressure release, and gas magnetic valve plays a protective role to minipump 9 simultaneously; Pot inner pressure becomes the lateral wall that ambassador's sealing ring 6 labial plate 602 is close to all grooves 501 of ring of interior pot 5, makes to be in sealing state in pot; Interior pot 5 is caused to move down when pot inner pressure is excessive; thus make sealing ring 6 deviate from ring week groove 501; namely gap is produced between sealing ring 6 and interior pot 5; high steam gushes out from gap and carries out pressure release, and the sealing ring 6 therefore in the present embodiment and the structure of interior pot 5 do not have the original overpressure protection performance of disintegration voltage power pot yet.When there being leftover to need fresh-keeping in pot, cover pot cover, start air suction process, extract the residual air in pot out, pot inner pressure diminishes simultaneously, ambient pressure makes the labial plate 602 of sealing ring 6 be close to the madial wall of all grooves 501 of ring of interior pot 5, make to be in sealing state in pot, outside air cannot enter, and reaches the object that leftover is fresh-keeping for a long time, leftover is poured out fresh-keeping separately without the need to user, greatly facilitate the use of user.
Electric pressure cooking saucepan in the present embodiment also comprises control circuit and operation push-button, and inner cap 3 is provided with the pressure sensor 10 for detecting gas pressure inside interior pot 5, operation push-button, internal pressure sensor 10 are all connected with control circuit.
As shown in Figure 5, the control method of bleeding of fresh-keeping in the present embodiment electric pressure cooking saucepan:
First be 60, preset times H be 5 by operation push-button setting preset interval time N, then enter following steps;
S01, first wait for first stand-by period Y minute decided at the higher level but not officially announced after perform step S1;
The force value that S1, pressure sensor 10 detect 5 li, interior pot is P kPa;
S2, the force value detected and 101 kPas are carried out subtraction by control circuit draw difference in step S1, if the absolute value of difference is less than difference K kPa decided at the higher level but not officially announced, startup gas magnetic valve 8 and minipump 9 are bled, bleed after running M minute running time first decided at the higher level but not officially announced and stop, performing step S3;
If the absolute value of difference is greater than or equal to difference K kPa decided at the higher level but not officially announced, does not start gas magnetic valve 8 and minipump 9 and perform step S1 and S2 successively again after waiting for stand-by period X decided at the higher level but not officially announced minute;
S3, after preset interval time N minute, gas magnetic valve 8 and minipump 9 stop after again running the Q minute circular flow time decided at the higher level but not officially announced and record number of run R;
S4, disconnect the circuit of gas magnetic valve 8 and minipump 9 when the R in step S3 equals preset times H, then make R make zero.
Wherein first stand-by period Y decided at the higher level but not officially announced is 20, and difference K decided at the higher level but not officially announced is 2, and running time first decided at the higher level but not officially announced, M was 4, and stand-by period X decided at the higher level but not officially announced is 20, and circular flow time Q decided at the higher level but not officially announced is 2.
The pressure running 5 li, interior pot when gas magnetic valve 8 and minipump 9 first equals or a little more than environmental pressure, time run of for this reason bleeding longlyer just can reach vacuum effect, when again bleeding, the pressure of 5 li, interior pot is negative pressure, so can run the pressure that the short period just can continue to reduce by 5 li, interior pot.
Because under atmospheric environment, negative pressure is limited, high pressure is unlimited in theory, so negative-pressure sealing can not image height means of press seals can provide like that very large pressure to sealing ring is sealed very tight, if want that obtaining good negative-pressure sealing effect needs to bleed always, but so just consume electric energy very much, some is lost more than gain, and the present embodiment has started a kind of method that interruption is bled for this reason, both can save electric energy, fresh-keeping effect of well bleeding can be obtained again.First to detect the pressure in pot and compare with normal atmospheric pressure 101 kPas, if pressure difference value is large, illustrate that the pressure in pot is larger, food and gas temperature higher, now bleed, moisture in food can be vaporized out and be made the air pressure in pot increase, and sealing may be caused to lose efficacy very soon, and food also can be made to become dry and affect mouthfeel simultaneously.When equal pressure difference is less, bleed in interval again, to keep negative pressure state in pot as far as possible, namely keeps sealing state in pot, avoid outside air to enter.
These are only a specific embodiment of the present invention, but design concept of the present invention is not limited thereto, all the present invention of utilization conceive the insubstantial modifications made the present invention, all fall within protection scope of the present invention.
Claims (5)
1. a fresh-keeping electric pressure cooking saucepan, comprises a pot body, outer pot, interior pot, pot cover, control circuit, operation push-button, and wherein outer pot is supported in pot body, interior pot is placed in outer pot, and pot cover comprises enclosing cover and inner cap, and inner cap is placed in enclosing cover, enclosing cover is rotatablely fastened on outer pot, and inner cap is buckled on interior pot; It is characterized in that, the ring week groove of a circle opening upwards is provided with outside described interior pot pot mouth, the outboard sidewalls of all grooves of ring is vertical, a sealing ring is provided with between described inner cap and interior pot, sealing ring comprises upper labial plate and labial plate, and inside upper labial plate laminating inner cap, labial plate is vertical annular ring, when inner cap fastens, labial plate stretches in ring week groove, and the outboard sidewalls matched in clearance of labial plate and all grooves of ring; Inside cover and be connected with flexible pipe, the sealing of flexible pipe one end is communicated to inside inner cap; Be provided with minipump in described pot body, the other end of flexible pipe is communicated to minipump; Inside cover the pressure-detecting device be provided with for detecting gas pressure inside interior pot.
2. a control method of bleeding for electric pressure cooking saucepan according to claim 1, its control method is as follows:
In S1, detection, inside pot, gas pressure value is P kPa;
S2, the force value detected and 101 kPas are carried out subtraction draw difference in step S1, if the absolute value of difference is less than difference K kPa decided at the higher level but not officially announced, start minipump, micro vacuum pump operation stops after M minute running time first decided at the higher level but not officially announced, performs step S3;
If the absolute value of difference is greater than or equal to difference K kPa decided at the higher level but not officially announced, can not minipump be started and perform step S1 and S2 successively again after waiting for stand-by period X decided at the higher level but not officially announced minute;
S3, after preset interval time N minute, after the micro vacuum pump operation Q minute circular flow time decided at the higher level but not officially announced stop;
S4, step S3 circulation performs preset times H rear circuit disconnecting minipump.
3. control method of bleeding according to claim 2, it is characterized in that, described preset interval time N and preset times H is all set by operation push-button, and the scope of preset interval time N is 30 ~ 90, and preset interval time N is the integral multiple of 10, the scope of preset times H is 1 ~ 10.
4. control method of bleeding according to claim 2, it is characterized in that, the scope of described difference K decided at the higher level but not officially announced is 1 ~ 7, and described running time first decided at the higher level but not officially announced, the scope of M was 3 ~ 5, the scope of described stand-by period X decided at the higher level but not officially announced is 10 ~ 30, and the scope of described circular flow time Q decided at the higher level but not officially announced is 1 ~ 2.
5. control method of bleeding according to claim 2, is characterized in that, also comprises step S01 before described step S1: perform step S1 after waiting for first stand-by period Y minute decided at the higher level but not officially announced, and wherein the scope of first stand-by period Y decided at the higher level but not officially announced is 10 ~ 30.
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