CN205018804U - Electric cooker - Google Patents

Abstract

The utility model discloses an electric cooker, electric cooker includes: a kind of deep pot body, a kind of deep pot lid, heating device, temperature -detecting device and pressure relief device, the internal limited play of stewing culinary art chamber, temperature -detecting device is used for detecting the soup liquid temperature of culinary art intracavity, and pressure maintaining that pressure relief device is used for making the culinary art intracavity is below the rated pressure P volume and construct the soup liquid temperature that detects the culinary art intracavity as temperature -detecting device when rising to bumping temperature T bumping, and pressure relief device forces the exhaust of culinary art chamber so that cook the soup liquid bumping of intracavity, wherein: T bumping < T boils, and T boils for the boiling temperature of soup liquid when the rated pressure P volume of culinary art intracavity, P volume > 1atm. According to the utility model discloses an electric cooker through setting up temperature -detecting device and pressure relief device, can compromise bumping stage and boiling stage that the realization was cooked effectively, improves the conglomeration problem of rice, optimizes the taste of rice, and electric cooker's simple structure, handling ease, low in production cost.

Description

Electric cooker

Technical field

The utility model relates to cooking equipment field, especially relates to a kind of electric cooker.

Background technology

Point out in correlation technique; electric cooker is in the process of cooking; along with the passing of soak time and the rising of water temperature; the surface of the grain of rice starts gelatinization and becomes sticky; can be bonded together between the grain of rice and the grain of rice and form rice group; because the heat-conductive characteristic of rice is far below the heat-conductive characteristic of water, thus the grain of rice of conglomeration can hinder heat evenly to transmit to whole pot rice, and causing the grain of rice be wrapped in the middle of rice group to occur because of absorbing water cannot the half-cooked problem of gelatinization completely.And, the rice being positioned at electric cooker is heated uneven due to levels, thus the rice gelatinization degree being positioned at pot diverse location is also inconsistent, thus excessively gelatinization change is rotten to cause the rice of some places, and the also not thoroughly gelatinization of some places rice, cause the uniformity of whole pot rice maturation widely different, affect the mouthfeel of rice.

Utility model content

The utility model is intended at least to solve one of technical problem existed in prior art.For this reason, the utility model is to propose a kind of electric cooker, and cooking of described electric cooker is effective.

According to electric cooker of the present utility model, comprising: pot body, limits cooking cavity in described pot body; Pot lid, described pot lid is located on described pot body opening or closing to open or to close described cooking cavity; For the heater heated described cooking cavity; For detecting the temperature-detecting device of soup temperature in described cooking cavity; And for making the pressure in described cooking cavity maintain rated pressure P _volumefollowing pressure relief device, described pressure relief device is configured to detect that the soup temperature in described cooking cavity is increased to bumping temperature T when described temperature-detecting device _bumpingtime, described pressure relief device forces described cooking cavity to be vented to make the soup bumping in described cooking cavity, wherein: T _bumping< T _boil, T _boilfor the soup in described cooking cavity is at described rated pressure P _volumetime boiling temperature.

According to electric cooker of the present utility model, by set temperature checkout gear and pressure relief device, the bumping stage and boiling stage that realize cooking effectively can be taken into account, improve the conglomeration problem of rice, optimize the mouthfeel of rice, and the structure of electric cooker is simple, be convenient to processing, production cost is low.

In certain embodiments, after described pressure relief device is configured to force described cooking cavity to be vented at least one times further, the soup temperature in described cooking cavity is made to be increased to boiling temperature T _boiland make described soup maintain described boiling temperature T _boillower constantly boiling is to boiling dry.

In certain embodiments, described temperature-detecting device is located at described pot and covers and be communicated with soup temperature described in indirect detection with the gas in described cooking cavity.

In certain embodiments, described bumping temperature T _bumpingmeet relation: T _boil-5 DEG C≤T _bumping≤ T _boil-1 DEG C.

In certain embodiments, described pressure relief device is configured to detect that the soup temperature in described cooking cavity is increased to delivery temperature T when described temperature-detecting device further _rowin time, is forced described cooking cavity is vented, wherein, and T _row< T _bumping.

In certain embodiments, described delivery temperature T _rowmeet: T _row=90 DEG C.

In certain embodiments, described pot covers the exhaust outlet being formed with and being communicated with described electric cooker outside and described cooking cavity, and described pressure relief device comprises: pressure limiting valve and pressure relief mechanism, and described pressure relief mechanism is used for ordering about described pressure limiting valve and opens or close described exhaust outlet.

In certain embodiments, described pot covers has cambered way, described exhaust outlet runs through the bottom of described cambered way, described pressure limiting valve to be located at slidably on described cambered way and often to keep out to cut out described exhaust outlet on described exhaust outlet, and described pressure relief mechanism is used for ordering about described pressure limiting valve along described cambered way upward sliding to open described exhaust outlet.

In certain embodiments, described pressure relief mechanism comprises: electromagnet, described electromagnet comprises the iron core that can move horizontally, described electromagnet is configured to when after described electromagnet energising, and described iron core moves towards the direction of described pressure limiting valve to promote described pressure limiting valve along described cambered way upward sliding to open described exhaust outlet.

In certain embodiments, described pressure relief mechanism comprises: cam pack, described cam pack comprises rotating cam, and described cam pack to be configured to when the longitudinal end of described cam promotes described pressure limiting valve described pressure limiting valve along described cambered way upward sliding to open described exhaust outlet.

In certain embodiments, described pressure relief device comprises further: be located at the reset linked component between described pressure relief mechanism and pressure limiting valve, described reset linked component be configured to when described pressure relief mechanism no longer promote described pressure limiting valve open described exhaust outlet time, the part of described reset linked component is moved towards the direction away from described pressure limiting valve, makes described pressure limiting valve along the free landing of described cambered way to close described exhaust outlet.

In certain embodiments, described reset linked component comprises: flexible seal, and described seal is located between described pressure relief mechanism and described exhaust outlet described pressure relief mechanism and described exhaust outlet to be kept apart; And moving part, described moving part can be connected between described pressure relief mechanism and described seal linkedly.

In certain embodiments, described pressure relief mechanism is magnetic valve, and described pressure relief device is configured to when described magnetic valve energising, and described magnetic valve attracts described pressure limiting valve to move to open described exhaust outlet.

In certain embodiments, described pressure limiting valve can be located at the top of described exhaust outlet up or down, described magnetic valve is located at the top of described pressure limiting valve, and described pressure relief device is configured to when described magnetic valve energising, and described magnetic valve attracts described pressure limiting valve to move up to open described exhaust outlet.

In certain embodiments, described pressure limiting valve is spheroid.

In certain embodiments, described pressure limiting valve can be located at the top of described exhaust outlet up or down, and described pressure relief device comprises further: locating part; And linked component, described linked component to be connected between described pressure relief mechanism with described pressure limiting valve and to coordinate with described locating part, described pressure relief device be configured to when described pressure relief mechanism promote described linked component move towards the direction of described pressure limiting valve time, described locating part orders about described linked component and drives described pressure limiting valve synchronously to move down to close described exhaust outlet.

In certain embodiments, described locating part is be fixed on the gag lever post above described linked component, described linked component comprises: trace, described trace is connected between described pressure relief mechanism and described pressure limiting valve, and described trace can be driven by described pressure relief mechanism and move horizontally with relatively described pressure limiting valve; Guide, described guide is fixed on described trace, described guide has and coordinates with the lower end of described gag lever post the spigot surface slided all the time, described pressure relief device is configured in the process driving described trace to move horizontally towards the direction of described pressure limiting valve when described pressure relief mechanism, and spigot surface upward sliding described in the described lower end edge of described gag lever post moves down to close described exhaust outlet to promote described guide, described trace and described pressure limiting valve.

In certain embodiments, described pressure relief device comprises further: back-moving spring, described back-moving spring is located between described linked component and described pot lid, described back-moving spring is configured to be compressed by the described linked component moved down when described linked component moves towards the direction of described pressure limiting valve, promotes described linked component and described pressure limiting valve move to open described exhaust outlet when described back-moving spring is upspring.

In certain embodiments, described pressure relief mechanism comprises: electromagnet, described electromagnet comprises and can move horizontally and the iron core be connected with described linked component, described pressure relief device is configured to when after described electromagnet energising, and described iron core moves towards the direction of described pressure limiting valve to drive described pressure limiting valve to close described exhaust outlet.

In certain embodiments, described pressure limiting valve can be located at the top of described exhaust outlet up or down, described pressure relief mechanism comprises: cam pack, described cam pack comprises rotating cam, and described cam pack is configured to the described pressure limiting valve when the longitudinal end of described cam promotes described pressure limiting valve and moves down to close described exhaust outlet.

In certain embodiments, described pressure relief device comprises further: back-moving spring, described back-moving spring is located between described pressure limiting valve and described pot lid, described back-moving spring is configured to be compressed by the described pressure limiting valve moved down when the longitudinal end of described cam promotes described pressure limiting valve, promotes described pressure limiting valve moves to open described exhaust outlet when described back-moving spring is upspring.

Additional aspect of the present utility model and advantage will part provide in the following description, and part will become obvious from the following description, or be recognized by practice of the present utility model.

Accompanying drawing explanation

Fig. 1 is cook control temperature and the pressure curve of the electric cooker according to the utility model embodiment;

Fig. 2 is the schematic diagram of the pressure relief device according to the utility model embodiment one, and in figure, exhaust outlet is closed;

Fig. 3 is the schematic diagram of the pressure relief device according to the utility model embodiment one, and in figure, exhaust outlet is opened;

Fig. 4 is the schematic diagram of the pressure relief device according to the utility model embodiment two, and in figure, exhaust outlet is closed;

Fig. 5 is the schematic diagram of the pressure relief device according to the utility model embodiment two, and in figure, exhaust outlet is opened;

Fig. 6 is the schematic diagram of the pressure relief device according to the utility model embodiment three, and in figure, exhaust outlet is closed;

Fig. 7 is the schematic diagram of the pressure relief device according to the utility model embodiment three, and in figure, exhaust outlet is opened;

Fig. 8 is the schematic diagram of the pressure relief device according to the utility model embodiment four, and in figure, exhaust outlet is closed;

Fig. 9 is the schematic diagram of the pressure relief device according to the utility model embodiment four, and in figure, exhaust outlet is opened;

Figure 10 is the schematic diagram of the pressure relief device according to the utility model embodiment five, and in figure, exhaust outlet is closed;

Figure 11 is the schematic diagram of the pressure relief device according to the utility model embodiment five, and in figure, exhaust outlet is opened;

Figure 12 is the schematic diagram of the pressure relief device according to the utility model embodiment six, and in figure, exhaust outlet is closed;

Figure 13 is the schematic diagram of the pressure relief device according to the utility model embodiment six, and in figure, exhaust outlet is opened;

Figure 14 is the schematic diagram of pot lid according to the utility model embodiment.

Reference numeral:

1: pressure relief device; 11: pressure limiting valve; 111: spheroid; 112: sealing block piece; 113: trace; 114: sealing gasket; 115: guide; 116: gag lever post; 117: baffle plate; 118: sheet metal; 119: back-moving spring; 12: pressure relief mechanism; 121: moving part; 122: seal; 1221: middle part; 123: electromagnet; 1231: iron core; 124: motor; 1241: output shaft; 1242: cam; 125: magnetic valve; 1251: coil; 1252: magnetic material piece; 2: temperature-detecting device; 3: control device; 4: pot lid; 40: exhaust outlet; 41: cover plate; 42: back-up block; 421: cambered way; 43: slippage passage; 44: installed part; S1: warm-up phase; S2: water suction stage; S3: heating period; S31: exhausting cold air operation; S4: bumping stage; S5: boiling stage; S6: cook rice over a slow fire the stage; S7: holding stage.

Detailed description of the invention

Be described below in detail embodiment of the present utility model, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Be exemplary below by the embodiment be described with reference to the drawings, be intended to for explaining the utility model, and can not be interpreted as restriction of the present utility model.

Disclosing hereafter provides many different embodiments or example is used for realizing different structure of the present utility model.Of the present utility model open in order to simplify, hereinafter the parts of specific examples and setting are described.Certainly, they are only example, and object does not lie in restriction the utility model.In addition, the utility model can in different example repeat reference numerals and/or letter.This repetition is to simplify and clearly object, itself does not indicate the relation between discussed various embodiment and/or setting.In addition, the various specific technique that the utility model provides and the example of material, but those of ordinary skill in the art can recognize the property of can be applicable to of other techniques and/or the use of other materials.

Below with reference to the accompanying drawings electric cooker according to the utility model embodiment is described.

As shown in Figure 1, according to the electric cooker of the utility model embodiment, comprising: pot body (scheming not shown), pot lid 4, heater (scheming not shown), temperature-detecting device 2 (such as temperature sensor) and pressure relief device 1.

Particularly, with reference to Figure 14, limit cooking cavity in pot body, pot lid 4 is located to open or to close cooking cavity on pot body opening or closing, and heater is used for heating cooking cavity.Such as in a concrete example of the present utility model, pot body can comprise interior pot body and outer boiler body, interior pot body is located in outer boiler body, it is external that outer boiler body is supported on interior pot, interior pot body limits the cooking cavity for holding food materials, and pot lid 4 can be connected with pot body pivotly by hinge, freely can rotate to make pot lid 4 around the axis of pot body top afterbody, heater can be heating plate etc., for being that heat energy heats cooking cavity by electric energy conversion.

With reference to Figure 14, temperature-detecting device 2 is for detecting culinary art cavity temperature, and specifically, temperature-detecting device 2 is for the temperature of the soup (such as thin rice gruel) in direct or indirect detection cooking cavity.For the ease of installing, temperature-detecting device 2 can be arranged in pot lid 4 and the vapor (steam) temperature is communicated with the gas blanket of cooking cavity inner top to detect cooking cavity inner top, now, can pass through the soup temperature in the method indirect detection cooking cavity of derivation.Such as, the temperature value that temperature-detecting device 2 detects can be added that the difference of vapor (steam) temperature and soup temperature obtains the soup temperature in cooking cavity indirectly.

With reference to Fig. 1 and Figure 14, pressure relief device 1 is for making cooking cavity exhaust pressure relief, and particularly, pressure relief device 1 maintains rated pressure P for making the pressure in cooking cavity _volumebelow, that is, when the pressure in cooking cavity reaches rated pressure P _volumetime above, the pressure (such as steam pressure) in cooking cavity can order about the pressure release of pressure relief device 1 automatic vent, thus guarantees that the pressure in cooking cavity is less than or equal to rated pressure P all the time _volume, particularly, when the pressure in cooking cavity reaches rated pressure P _volumetime, the soup in cooking cavity is at rated pressure P _volumeunder with boiling temperature T _boilboiling, wherein, rated pressure P _volumebe greater than standard atmospheric pressure, i.e. a P _volume> 1atm.

Pressure relief device 1 is configured to detect that the soup temperature in cooking cavity is increased to bumping temperature T when temperature-detecting device 2 _bumpingtime, pressure relief device 1 forces cooking cavity to be vented to make the soup bumping in cooking cavity, wherein: T _bumping< T _boil.That is, the pressure in cooking cavity is reduced by exhaust, make the temperature of the soup in current cooking cavity higher than the boiling point of the soup corresponding to the air pressure after current step-down, thus soup can seethe with excitement suddenly, produce the effect stirring and seethe, and then the rice group of caking in cooking cavity can be broken up, promote the uniformity of rice water suction and the uniformity of heating.Preferably, bumping temperature T _bumpingmeet relation: T _boil-5 DEG C≤T _bumping≤ T _boil-1 DEG C.Thus, bumping realization reliable for effect can be guaranteed.

Pressure relief device 1 is no longer forced cooking cavity exhaust, is increased to boiling temperature T to make the soup temperature in cooking cavity after being configured to force cooking cavity to be vented at least one times further _boiland make soup maintain boiling temperature T _boillower constantly boiling is to boiling dry.That is, through exhaust once or repeatedly, after the bumping stage completes, soup is at T _boiltemperature under constantly boiling, in other words, the soup in this stage just no longer carries out bumping.Thus, because the surface of the grain of rice substantially gelatinization after bumping, the soup in later stage can be fewer and feweri, if bumping again, can make the skewness of rice in cooking cavity, and cause the soft or hard of rice uneven, the rice finally cooked also can become out-of-flatness, affects mouthfeel.In addition, the rice after bumping is at T _boilhot environment under constantly boiling, rice can be made more easily to be formed in equally distributed " hole, cave ", the heat bottom cooking cavity is made to upload to the upper strata of rice by " hole, cave ", thus realize the levels homogeneous heating of rice, in other words, if continuation bumping, probably cause the skewness in hole, cave, thus cause rice soft or hard uneven further.

In addition, with reference to Figure 14, electric cooker can also comprise control device 3, control device 3 can comprise single-chip microcomputer, interlock circuit hardware-in-the-loop, Signal reception and control loop etc., control device 3 can by gathering the live signal of said temperature checkout gear 2, the control to pressure relief device 1 is exported, to realize the control to cooking cavity exhaust condition through program process computing.

According to the electric cooker of the utility model embodiment, the boiling stage of cooking can be controlled by pressure relief device 1, the bumping stage can be realized before boiling stage by pressure relief device 1 and temperature-detecting device 2, that is, can be taken into account by a pressure relief device 1 and realize bumping operation and boiling operation, thus make the structure of electric cooker simple, be convenient to processing, production cost is low, in addition, the rice of conglomeration in cooking cavity effectively can be broken up in the bumping stage, improve uniformity and the thermal efficiency of rice water suction, every rice can be absorbed water gelatinization well, improve uniformity and the uniformity of rice gelatinization, optimize the mouthfeel of rice.

In an embodiment of the present utility model, the temperature that pressure relief device 1 is configured to work as the soup that temperature-detecting device 2 detects in cooking cavity is further increased to delivery temperature T _rowtime make cooking cavity be vented at least one times to discharge the cold air (as shown in the S31 stage in Fig. 1) in cooking cavity, wherein, T _row< T _bumping, alternatively, T _row=90 DEG C.That is, before the bumping stage in the process of cooking, the exhausting cold air stage can be set.Like this, electric cooker is at the initial stage of cooking, along with continuing of heating process, soup temperature in cooking cavity raises gradually, in soup, the rising of the solubility with temperature of gas progressively reduces, the gas of separating out from soup increases gradually, the air pressure in cooking cavity is caused to raise gradually, because cooking cavity and the external world convection current do not occur substantially, and the gas in soup and cooking cavity only carries out heat transfer by air layer, heat transfer rate slowly, thus cause the air layer on soup surface and away from soup surface air layer between the temperature difference larger, after the temperature of soup is increased to more than 90 DEG C, by controlling pressure relief device 1, the cold air in cooking cavity is discharged to rapidly electric cooker outside, thus the air themperature in cooking cavity is uniformly distributed, improve cooking efficiency, improve cold air and there is the rice discoloration problem caused.

For the ease of installing, temperature-detecting device 2 can be arranged on pot lid 4 on and the gas temperature be communicated with the gas in cooking cavity to detect cooking cavity inner top, such as in the example in figure 14, temperature-detecting device 2 is arranged on pot lid 4, and the upper end of temperature-detecting device 2 is embedded in pot lid 4, the lower end of temperature-detecting device 2 passes pot lid 4 downwards and contacts with the gas temperature in direct-detection cooking cavity with the gas at cooking cavity top, and then indirectly obtain fluid temperature in cooking cavity, such as, can by the soup temperature in the method indirect detection cooking cavity of derivation.Like this, before carrying out the exhausting cold air stage, because the air layer pressing close to soup surface is larger with the temperature difference away from the air layer on soup surface, temperature difference T can be increased to 10 DEG C ~ 25 DEG C, now, when the gas temperature that temperature-detecting device 2 detects in cooking cavity is increased to 90 DEG C-Δ T, can thinks that the soup temperature in cooking cavity is increased to delivery temperature 90 DEG C, now can carry out exhausting cold air action.In addition, it should be noted that, after the exhausting cold air stage terminates, the air themperature in cooking cavity is uniformly distributed, and the gas temperature that temperature-detecting device 2 detects can think the soup temperature equaled in cooking cavity.

In embodiments more of the present utility model, as shown in figure 14, pressure relief device 1 according to the utility model embodiment comprises: pressure limiting valve 11 and pressure relief mechanism 12, pot lid 4 is formed with the exhaust outlet 40 being communicated with pot lid 4 outside and cooking cavity, exhaust outlet 40 is opened or closed to pressure relief mechanism 12 for ordering about pressure limiting valve 11.Thus, just exhaust pressure relief work can be controlled by controlling pressure relief mechanism 12, thus convenient manipulation and control, and be convenient to realize and install.Certainly, the utility model is not limited thereto, and (such as mode) manually can also control pressure release bumping process and the pressure release exhausting cold air process of electric cooker by other means.

Specifically, exhaust outlet 40 is for mandatory outlet of opening to make the high steam in cooking cavity discharge, and makes the pressure in cooking cavity be reduced to the rated pressure P preset lower than pressure limiting valve 11 by quick steam discharge _volumepressure relief mechanism 12 is driven by control device 3, control the driving mechanism that pressure limiting valve 11 realizes opening or closing exhaust outlet 40 action, pressure limiting valve 11, for being communicated with or blocking the air in cooking cavity and the electric cooker external world, limits the rated pressure P that the pressure fixing of cooking cavity after playing pressure is being preset _volume, as the rated pressure P that the pressure of cooking cavity is preset lower than pressure limiting valve 11 _volumetime, pressure limiting valve 11 is in the state of cutting out exhaust outlet 40, as the rated pressure P that the pressure in cooking cavity is preset higher than pressure limiting valve 11 _volumetime, pressure limiting valve 11 is opened automatically, is in the state opening exhaust outlet 40, makes the air pressure in cooking cavity be restored to rated pressure P with automatic-discharging steam _volumein embodiments more of the present utility model, the rigid spheres 111 (or sealing block piece 112) of pressure limiting valve 11 can be a quality be m, spheroid 111 (or sealing block piece 112) lid is located on the exhaust outlet 40 that cross-sectional area is S, the ratio of dependence spheroid 111 (or the sealing block piece 112) deadweight of itself and the cross-sectional area of exhaust outlet 40 limits the pressure in cooking cavity, now, the rated pressure P that pressure limiting valve 11 is default _volumefor, P _volume=mg/S, preferably, rated pressure P _volumemeet: 1.2atm≤P _volume≤ 1.4atm.But, as the rated pressure P that the pressure in cooking cavity is preset lower than pressure limiting valve 11 _volumetime, although pressure limiting valve 11 can not be opened automatically by the pressure in cooking cavity, can mechanically open pressure limiting valve 11 by controlling pressure relief mechanism 12.

Below with reference to Fig. 2-Figure 13, the pressure relief device 1 according to the multiple specific embodiment of the utility model is described.

Embodiment one,

As shown in Figures 2 and 3, pressure limiting valve 11 is spheroid 111, pot lid 4 has cambered way 421, exhaust outlet 40 runs through the bottom of cambered way 421, spheroid 111 to be located at slidably on cambered way 421 and often to keep out to close exhaust outlet 40 on exhaust outlet 40, pressure relief mechanism 12 can promote spheroid 111 arcuately slideway 421 upward sliding to open exhaust outlet 40.As shown in Figure 2, pot lid 4 can comprise enclosing cover and cover plate 41, cover plate 41 is located at the bottom of enclosing cover, pressure relief device 1 can be located between enclosing cover and cover plate 41, center on cover plate 41 can have through installing hole, back-up block 42 can be installed by installing hole place, cambered way 421 is formed by the upper surface of back-up block 42 is recessed downwards, exhaust outlet 40 can run through back-up block 42 and through cambered way 421 bottom along the vertical direction, be communicated with above cooking cavity and cover plate 41 and with the space of electric cooker ft connection.

Further, with reference to Fig. 2 and Fig. 3, spheroid 111 is rollably located on cambered way 421, when spheroid 111 is not by other external force, spheroid 111 can be parked in the bottom of cambered way 421 under gravity all the time to block exhaust outlet 40 (as shown in Figure 2), cooking cavity and electric cooker outside are blocked, when spheroid 111 is subject to the thrust from general horizontal direction, spheroid 111 can along cambered way 421 upward sliding to open exhaust outlet 40 (as shown in Figure 3), make cooking cavity and electric cooker ft connection, when removing the thrust acted on spheroid 111, spheroid 111 can be under gravity, again the bottom of cambered way 421 is fallen back to again to block, close exhaust outlet 40 (as shown in Figure 2).So repeatedly, the opening and closing of exhaust outlet 40 can be realized.

Further, with reference to Fig. 2 and Fig. 3, pressure relief mechanism 12 comprises: electromagnet 123 and moving part 121, electromagnet 123 comprises the iron core 1231 that can move horizontally, moving part 121 to be located between iron core 1231 with spheroid 111 and to be connected with iron core 1231, pressure relief device 1 is configured to after electromagnet 123 is energized, iron core 1231 towards spheroid 111 direction (right such as shown in Fig. 2) motion with indirectly promoted by moving part 121 spheroid 111 arcuately slideway 421 upward sliding to open exhaust outlet 40 (as shown in Figure 3), when after electromagnet 123 power-off, the thrust to spheroid 111 can be removed, spheroid 111 can be under gravity, again the bottom of cambered way 421 is fallen back to again to block, close exhaust outlet 40 (as shown in Figure 2).

Such as in the figure 2 example, pot lid 4 can limit slippage passage 43, moving part 121 can be located in slippage passage 43 horizontal sliding, left end and the iron core 1231 of moving part 121 are fixedly linked, right-hand member and the spheroid 111 of moving part 121 interact, after electromagnet 123 is energized, iron core 1231 promotes moving part 121 and moves right to promote spheroid 111 and move to upper right side to open exhaust outlet 40, after electromagnet 123 power-off, iron core 1231 discharges the thrust to spheroid 111, spheroid 111 can under gravity landing to close exhaust outlet 40.Thus, the structure of the pressure relief device 1 of the present embodiment one simple, be convenient to realize and control.

Here, it should be noted that, the structure of electromagnet 123 should be well known to those skilled in the art, here be not described further, only be briefly described, electromagnet 123 can comprise coil and iron core 1231, coil can jointly can be translationally engaged in magnetic force chamber with iron core 1231 on iron core 1231 in winding, iron core 1231 can be made after coil electricity (namely electromagnet 123 is energized) to produce the magnetic field contrary with magnetic force chamber, thus towards direction (right such as shown in Fig. 2) translation away from magnetic force chamber, when after coil blackout, magnetic field dissipate, iron core 1231 can stop motion.

Particularly, pressure relief device 1 can comprise further: be located at the reset linked component between pressure relief mechanism 12 and pressure limiting valve 11, reset linked component be configured to when pressure relief mechanism 12 no longer promote pressure limiting valve 11 open exhaust outlet 40 time, reset linked component moves towards the direction away from pressure limiting valve 11, make pressure limiting valve 11 arcuately the free landing of slideway 421 to close exhaust outlet 40.Particularly, reset linked component can comprise: flexible seal 122 and moving part 121 mentioned above, seal 122 is located between pressure relief mechanism 12 and exhaust outlet 40 pressure relief mechanism 12 and exhaust outlet 40 to be kept apart, thus avoid the normal work of the steam interference pressure relief mechanism 12 of discharging from exhaust outlet 40, moving part 121 can be connected between pressure relief mechanism 12 and seal 122 linkedly, that is, pressure relief mechanism 12 can drive seal 122 to move by moving part, and seal 122 also can drive pressure relief mechanism 12 to move by moving part.

Such as in the figure 2 example, seal 122 is connected to the right-hand member of moving part 121, when iron core 1231 does not promote moving part 121, seal 122 be in nature shape and middle part 1221 towards the direction indentation (as shown in Figure 2) away from spheroid 111, when iron core 1231 promote moving part 121 move right time, (as shown in Figure 3) is protruded towards the direction of spheroid 111 in the middle part 1221 that moving part 121 promotes seal 122, there is deformation to make seal 122 and there is elastic potential energy, when iron core 1231 stop motion, moving part 121 promotes the middle part 1221 of seal 122 no longer to the right, the middle part 1221 of seal 122 can resile to the indentation again of the direction away from spheroid 111 under the effect of elastic force, and then promote moving part 121 and iron core 1231 to left.Certainly, the utility model is not limited thereto, and the mode that can also be arranged back-moving spring by the one end on the length direction of moving part 121 realizes recalling of trace 113 left, no longer describes in detail here.

Embodiment two,

As shown in Figure 4 and Figure 5, the present embodiment is roughly the same with the structure of embodiment one, and wherein identical parts adopt identical Reference numeral, and difference is only: adopt the electromagnet 123 in cam pack replacement embodiment one in the present embodiment two.Wherein, cam pack can be the motor 124 with cam 1242.

Particularly, with reference to Fig. 4 and Fig. 5, pressure relief mechanism 12 comprises: motor 124 and cam 1242, motor 124 has output shaft 1241, cam 1242 is arranged on output shaft 1241 and rotates to be driven by motor 124, moving part 121 is located between cam 1242 and spheroid 111, in the process that motor 124 driving cam 1242 rotates, the outer peripheral face of cam 1242 can make moving part 121 translation in the lateral direction by the right side promoting moving part 121, when the outer peripheral face that cam 1242 turns to its longitudinal end contacts with moving part 121 (as shown in Figure 5), moving part 121 towards spheroid 111 direction motion with promote spheroid 111 arcuately slideway 421 upward sliding to open exhaust outlet 40, when the outer peripheral face that cam 1242 turns to its minor axis end contacts with moving part 121 (as shown in Figure 4), moving part 121 is no longer subject to thrust to the right, thus the thrust of release to spheroid 111, spheroid 111 can under gravity landing to close exhaust outlet 40.Thus, the structure of the pressure relief device 1 of the present embodiment two simple, be convenient to realize and control.

Thus, operating noise is not had in process due to cam pack work, thus undisturbedly can control the on-off action of pressure limiting valve 11, like this, user is in the process using electric cooker to cook, there is not operating noise in electric cooker, thus improves the comfort of electric cooker, makes electric cooker more be suitable for domestic. applications.

Embodiment three,

As shown in Figure 6 and Figure 7, the present embodiment is roughly the same with the structure of embodiment one, wherein identical parts adopt identical Reference numeral, and difference comprises: adopt the electromagnet 123 that magnetic valve 125 replaces in embodiment one in the present embodiment three, and the direction of motion of spheroid 111 is vertical direction.

Particularly, spheroid 111 can be located at the top of exhaust outlet 40 up or down, and pressure relief mechanism 12 is magnetic valve 125, and pressure relief device 1 is configured to when magnetic valve 125 is energized, and magnetic valve 125 attracts spheroid 111 to move up to open exhaust outlet 40.With reference to Fig. 6 and Fig. 7, magnetic valve 125 can be located at the top of spheroid 111, magnetic valve 125 can produce magnetic force and move up to attract the spheroid 111 of metal material, thus open exhaust outlet 40, when after magnetic valve 125 power-off, the magnetic force of magnetic valve 125 disappears and no longer attracts spheroid 111, and spheroid 111 can fall under gravity, to close exhaust outlet 40.Certainly, the utility model is not limited thereto, and spheroid 111 can also be can't help metal material and be made, and now only need arrange the magnetic material piece that can be attracted on spheroid 111.

Here, the structure of magnetic valve 125 should be well known to those skilled in the art, here be not described further, be only briefly described, magnetic valve 125 can comprise coil 1251 and magnetic material piece 1252, coil 1251 winding is on magnetic material piece 1252, magnetic material piece 1252 can be made to magnetize to have magnetic after coil 1251 is energized, thus attract spheroid 111, when after coil 1251 power-off, the magnetic of magnetic material piece 1252 can disappear, and no longer draws spheroid 111.

Here, it should be noted that, in above-mentioned three embodiments, owing to all have employed spheroid 111 to carry out pressure limiting, if want to produce bumping phenomenon preferably, it is larger that exhaust outlet 40 is preferably processed, meanwhile, the weight of spheroid 111 is also best more heavier, thus easily realizes good bumping effect.But, if exhaust outlet 40 is processed larger, and spheroid 111 is processed heavier, then pot lid 4 can be caused thicker, and adopting electromagnet 123 or magnetic valve 125 to back down spheroid 111 all needs larger power.And just there are not the problems referred to above in the pressure limiting valve 11 in following three embodiments, exhaust outlet 40 without the need to processing larger, pot lid 4 without the need to process thicker, and only need less power pressure limiting valve 11 just can open exhaust outlet 40, be not easy during work to occur stuck problem, can reliably guarantee that electric cooker reliably works.

Embodiment four,

As shown in Figure 8 and Figure 9, the present embodiment is roughly the same with the structure of embodiment one, and wherein identical parts adopt identical Reference numeral.

Particularly, pressure limiting valve 11 is sealing block piece 112, sealing block piece 112 can be located at the top of exhaust outlet 40 up or down, pressure relief device 1 comprises further: locating part and linked component, linked component to be connected between pressure relief mechanism 12 with pressure limiting valve 11 and to coordinate with locating part, pressure relief device 1 be configured to when pressure relief mechanism 12 promote linked component move towards the direction of pressure limiting valve 11 time, locating part orders about linked component and drives pressure limiting valve 11 synchronously to move down to close exhaust outlet 40.

Locating part is the gag lever post 116 be fixed on above linked component, linked component comprises: trace 113 and guide 115, trace 113 is connected between pressure relief mechanism 12 and pressure limiting valve 11, trace 113 can be driven by pressure relief mechanism 12 and move horizontally with relative pressure limiting valve 11, guide 115 is fixed on trace 113, guide 115 has and coordinates with the lower end of gag lever post 116 spigot surface slided all the time, pressure relief device 1 is configured in the process driving trace 113 to move horizontally towards the direction of pressure limiting valve 11 when pressure relief mechanism 12, the lower end edge spigot surface upward sliding of gag lever post 116 is to promote guide 115, trace 113 and pressure limiting valve 11 move down to close exhaust outlet 40.

Such as in the example of Fig. 8 and Fig. 9, sealing block piece 112 extends along the vertical direction, and can move up and down on exhaust outlet 40, trace 113 can extend substantially in the horizontal direction, the left end of trace 113 can be fixedly linked with iron core 1231, the right-hand member of trace 113 to the right through sealing block piece 112 and can move horizontally relative to described sealing block piece 112, and sealing block piece 112 synchronizing moving in the vertical direction in the process that moves up and down of trace 113, can be driven, guide 115 is fixedly mounted on the upper surface of the right-hand member of trace 113, thus guide 115, drive trace 113, sealing block piece 112 can be synchronized with the movement in the vertical direction.

Such as in the example of Fig. 8 and Fig. 9, spigot surface is tilted to downward-extension along direction from left to right, gag lever post 116 hangs and is arranged on pot lid 4 and is positioned at the top of spigot surface all the time, the lower end of gag lever post 116 is only against on spigot surface, thus, when iron core 1231 promote trace 113 mobile towards the direction (right such as shown in Fig. 8) of pressure limiting valve 11 time, because the position of gag lever post 116 is fixed, the lower end of gag lever post 116 can be with movable sealing block piece 112 and trace 113 to move down to promote guide 115 thus close exhaust outlet 40 (as shown in Figure 8) along spigot surface upward sliding.

Particularly, as shown in Figure 8, exhaust outlet 40 directly can run through cover plate 41 along the vertical direction, the top of cover plate 41 can arrange installed part 44, and the upper end of sealing block piece 112 through installed part 44, and can be moved up and down by the guide effect of installed part 44, the lower end of sealing block piece 112 has sealing gasket 114, when seal block piece 112 be moved downward to block exhaust outlet 40 time, sealing gasket 114 can seal the periphery of exhaust outlet 40, to realize better sealing function.

Further, pressure limiting valve 11 comprises further: back-moving spring 119, back-moving spring 119 is located between trace 113 and pot lid 4, back-moving spring 119 is configured to be compressed when trace 113 moves towards the direction of pressure limiting valve 11, and trace 113 of upspringing when trace 113 moves towards the direction away from pressure limiting valve 11 opens exhaust outlet 40 to make sealing block piece 112 move up.Such as in the example of Fig. 8 and Fig. 9, back-moving spring 119 is scalable along the vertical direction, and the two ends up and down of back-moving spring 119 are only against on the lower surface of trace 113 and the upper surface of installed part 44 respectively, when iron core 1231 promotes trace 113 to the right, when gag lever post 116 moves up along spigot surface, trace 113 is pushed and moves down with compression reseting spring 119, when iron core 1231 is no longer applied to trace 113 thrust to the right, gag lever post 116 no longer has the motive force along spigot surface upward sliding, thus trace 113 no longer be press against downward compression reseting spring 119, now, back-moving spring 119 can recover shape, to pop up, band movable sealing block piece 112 pops up opens exhaust outlet 40, make gag lever post 116 along spigot surface slide downward simultaneously, trace 113 promotes iron core 1231 and slides left.

Thus, compared with above-mentioned three embodiments (and following two embodiments), pressure relief device 1 in the present embodiment is in normally open (namely electromagnet 123 is often in "on" position), often exhaust outlet 40 is closed to make pressure limiting valve 11, when needs exhaust pressure relief, close pressure relief device 1 (by electromagnet 123 power-off), open exhaust outlet to make pressure limiting valve 11.And in above-mentioned three embodiments (and following two embodiments), pressure relief device 1 is in normally off, pressure limiting valve 11 often cuts out exhaust outlet 40, when needs exhaust pressure relief, starts pressure relief device 1, opens exhaust outlet 40 to make pressure limiting valve 11.

Embodiment five,

As shown in Figure 10 and Figure 11, the present embodiment is roughly the same with the structure of embodiment four, and wherein identical parts adopt identical Reference numeral.

Particularly, pressure limiting valve 11 can be located at the top of exhaust outlet 40 up or down, pressure relief mechanism 12 comprises: cam pack, and cam pack comprises rotating cam 1242, and cam pack is configured to the pressure limiting valve 11 when the longitudinal end of cam 1242 promotes pressure limiting valve 11 and moves down to close exhaust outlet 40.With reference to Figure 10 and Figure 11, pressure relief mechanism 12 comprises: motor 124 (such as stepper motor) and cam 1242, motor 124 has output shaft 1241, cam 1242 is arranged on output shaft 1241 and rotates to be driven by motor 124, the outer peripheral face of cam 1242 directly or is indirectly only against on sealing block piece 112, such as in the example of Figure 10, the upper end of sealing block piece 112 can be fixed with horizontally disposed stair cased baffles 117, the outer face of cam 1242 is only against on the upper surface of baffle plate 117, thus be indirectly only against on sealing block piece 112, when in the process that motor 124 driving cam 1242 rotates, when the major axis outer peripheral face of cam 1242 is only against on baffle plate 117, sealing block piece 112 is driven by baffle plate 117 and moves down, to close exhaust outlet 40 (as shown in Figure 10), when the minor axis outer peripheral face of cam 1242 is only against on baffle plate 117, sealing block piece 112 is no longer pushed and moves down, thus exhaust outlet 40 (as shown in Figure 11) can be opened.

Further, pressure limiting valve 11 can comprise further: back-moving spring 119, back-moving spring 119 is located between sealing block piece 112 and pot lid 4, such as in the example of fig. 11, back-moving spring 119 is scalable along the vertical direction, and the two ends up and down of back-moving spring 119 are only against on the lower surface of baffle plate 117 and the upper surface of installed part 44 respectively, back-moving spring 119 is configured to be compressed (as shown in Figure 10) when the major axis outer peripheral face of cam 1242 is only against on sealing block piece 112, upspring when the minor axis outer peripheral face of cam 1242 is only against on sealing block piece 112, sealing block piece 112 is to open exhaust outlet 40 (as shown in Figure 11).Certainly, the utility model is not limited thereto, and can also realize the homing action sealing block piece 112 by other means.

Embodiment six,

As shown in Figure 12 and Figure 13, the present embodiment is roughly the same with the structure of embodiment four, and wherein identical parts adopt identical Reference numeral, and difference comprises: employing magnetic valve 125 replaces the electromagnet 123 in embodiment four.

Particularly, sealing block piece 112 can be located at the top of exhaust outlet 40 up or down, and pressure relief mechanism 12 is magnetic valve 125, and pressure relief device 1 is configured to when magnetic valve 125 is energized, and magnetic valve 125 attracts sealing block piece 112 to move up to open exhaust outlet 40.With reference to Figure 12 and Figure 13, magnetic valve 125 can be located at the top of sealing block piece 112, sealing block piece 112 for metal material part or can seal the upper end fixing metal material pieces (sheet metal 118 such as described in Figure 13) of block piece 112, magnetic valve 125 can produce magnetic force and move up to attract the sealing block piece 112 with sheet metal 118, thus open exhaust outlet 40, when after magnetic valve 125 power-off, the magnetic force of magnetic valve 125 disappears and no longer attracts spheroid 111, spheroid 111 can fall under gravity, to close exhaust outlet 40.

Below with reference to the accompanying drawings 1 the cooking control method according to the electric cooker of the utility model embodiment is described, horizontal axis plots time shown in Fig. 1, the longitudinal axis in left side represents cooking cavity bottom temp, the longitudinal axis representative culinary art cavity pressure on right side, temperature curve T represents cooking cavity bottom temp over time, and pressure curve P represents culinary art cavity pressure over time.

Particularly, bottom outside cooking cavity can be provided with for the heater of cooking cavity bottom-heated and the temperature sensor (the temperature curve T shown in Fig. 1 is recorded by this temperature sensor) for detecting cooking cavity bottom temp, the whole process of cooking can be roughly divided into warm-up phase S1, water suction stage S2, heating period S3, bumping stage S4, boiling stage S5 and the stage S6 of cooking rice over a slow fire totally six stages over time according to the temperature bottom cooking cavity, in addition, cook rice over a slow fire after stage S6 terminates and can also have holding stage S7.Certainly, the utility model is not limited thereto, and heater can not also be located at the bottom of cooking cavity.

First stage: warm-up phase S1

After starting the rice-cooking function of electric cooker, can be heated cooking cavity by heater, be increased to water suction temperature T to make the thin rice gruel temperature from ambient in cooking cavity _inhale, alternatively, 40 DEG C≤T _inhale≤ 60 DEG C.Thus, the effect that warm-up phase S1 is main makes thin rice gruel be warming up to the optimum temperature interval of applicable grain of rice water suction by Fast Heating.

Second stage: water suction stage S2

After warm-up phase S1 terminates, lower powered heating can be carried out by heater, maintain T to make the thin rice gruel temperature in cooking cavity _inhale, and continue one section of duration t ₁, preferably, 5min≤t ₁≤ 30min.Thus, the water suction stage can make the grain of rice absorb water fully, makes the moisture content of rice after the water suction stage terminates, ensure the level be increased to 20% ~ 28%.In addition, thin rice gruel temperature is remained on the optimum temperature T of applicable grain of rice water suction _inhaleobject be: the too low meeting of thin rice gruel temperature causes grain of rice absorption speed to reduce, and causes absorbent time long, and the too high meeting of temperature causes the grain of rice to become sticky at water suction phase table batter, forms the rice group of caking too early, hinders the grain of rice water suction of rice cluster centre.

Phase III: heating period S3

After water suction stage S2 terminates, powerful heating can be carried out by heater, to make thin rice gruel temperature in cooking cavity by T _inhalebe increased to default migration bumping temperature T fast _bumping.

In this stage; rice can continue imbibition on the one hand; on the other hand because thin rice gruel temperature is higher; position, rice top layer can start gelatinization and become sticky; causing the grain of rice to be bonded together and form rice group, there is because of the encirclement of outside rice group the problem that absorption speed declines or water suction is difficult in the grain of rice meeting be in the middle of rice group.

In addition, in the process, along with continuing of heating process, coolant-temperature gage in pot body is more and more higher, gas solubility now in water can progressively reduce along with temperature rising, script dissolved gases in water is separated out gradually to be floated in the closed cavity except thin rice gruel be discharged in cooking cavity with the form of bubble, cannot circulate in airtight cavity due to gas and substantially convection current not occur, on the one hand, rising to atmospherically in airtight cavity can be caused to be greater than outside atmosphere pressure, on the other hand, due to, only heat transfer is carried out by air layer by the air chamber that the meter Shui Yu heated is airtight in gas pot body in airtight cavity, heat transfer rate slowly, the air themperature away from thin rice gruel surface in cooking cavity can be caused to produce larger temperature difference T with the air themperature close to thin rice gruel surface, Δ T difference size can be different because the amount of the structure space of product or rice of cooking is different, general difference value is 10 DEG C ~ 25 DEG C, cause the actual temperature of gas temperature and the thin rice gruel being arranged on the cooking cavity that the temperature-detecting device 2 in pot lid 4 detects widely different.

Therefore, row's cold air operation can be added in the heating period, namely the cold air in cooking cavity is made to be discharged to cooking cavity outside by forcibly opening exhaust outlet 40, make the gas temperature away from thin rice gruel surface in cooking cavity more close with the gas temperature close to thin rice gruel surface on the one hand, the gas temperature that temperature-detecting device 2 is detected more presses close to thin rice gruel temperature, the problem of another aspect can reduce cold air existence and cause rice variable color after discharging cold air.

Particularly, at heating period S3, after more than thin rice gruel temperature rise to 90 DEG C, the gas temperature angle value T detected when the temperature-detecting device 2 detecting gas temperature meets: during T >=90 DEG C-Δ T, by controlling pressure relief device 1, exhaust outlet 40 is opened, and keep certain duration t2, wherein, the duration t2 of exhaust outlet 40 exhausting cold air specifically can be arranged according to the amount of the volume of cooking cavity and rice, usually, t2 meets: 1s≤t2≤30s, thus make to realize compulsory circulation with electric cooker ambient atmosphere in cooking cavity, cold air in cooking cavity is discharged to rapidly electric cooker outside.

Here, it should be noted that, when temperature-detecting device 2 can direct-detection soup temperature time, when temperature-detecting device 2 detect soup temperature T ' meet: during T ' >=90 DEG C, directly by controlling pressure relief device 1, exhaust outlet 40 is opened, and keep certain duration t2.Thus, the rice discoloration problem caused because cold air exists can effectively be improved.

Fourth stage: bumping stage S4

A bumping agitating procedure S4 is inserted before starting with boiling stage S5 after the heating period, S3 terminated, changed by unexpected earth pressure release, rice is boiling hot carries out tumbling motion to stir to make the effect of the generation of the thin rice gruel in cooking cavity bumping, to break up the rice group of caking, promote the uniformity that whole pot rice absorbs water and heats.

When temperature-detecting device 2 detects that in cooking cavity, thin rice gruel temperature is increased to bumping temperature T _bumpingtime, by controlling above-mentioned pressure relief device 1 action (each duration can be arranged according to actual requirement) at least one times, so that exhaust outlet 40 is opened at least one times, carry out pressure release operation, make cooking cavity and electric cooker ft connection, the pressure in cooking cavity is made to be reduced to suddenly normal atmosphere pressure condition (such as a standard atmospheric pressure 1atm), that is, forcibly the pressure in cooking cavity is dropped to below atmospheric pressure state suddenly by the short time, thus the boiling temperature that the thin rice gruel in cooking cavity is depressed higher than normal atmosphere due to temperature and violent boiling suddenly, produce the effect stirring and seethe, produce with the impulsive force of bumping, the grain of rice being seethed stir to break up the heating period becomes sticky and the caking rice group that causes because grain of rice surface gelatinization, promote the water suction uniformity of rice entirety and the uniformity of heating.

Certainly, the utility model is not limited thereto, and controls beyond the duration of overall bumping stage S4, can also be controlled the duration of overall bumping stage S4 by the total duration controlling pressure release work repeatedly by the mode controlling pressure release number of times and each pressure release duration.

Wherein, bumping temperature T _bumpingfor the rated pressure P close to pressure limiting valve 11 _volumeboiling temperature T corresponding under state _boiltemperature, such as, preferably, T _bumpingmeet: T _boil-5 DEG C≤T _bumping≤ T _boil-1 DEG C, now, when temperature-detecting device 2 detects that the soup temperature in cooking cavity is increased to the rated pressure P of pressure limiting valve 11 _volumeboiling temperature T corresponding under state _boilduring-Δ T ' (preferably, 1≤Δ T '≤5), bumping operation can be started, wherein, boiling temperature T _boilby the effects of air pressure in cooking cavity, boiling temperature T under different pressures state _boildifference, concrete corresponding relation is in table 1.

Table .1: the boiling point of water and the corresponding relation of atmospheric pressure value

Atmospheric pressure value P/ (a standard atmospheric pressure atm)	Boiling temperature T/ (degree Celsius DEG C)
		1.0	100
1.1	102.4
		1.2	104.8
1.3	107.3
		1.4	109.7
1.5	111.6
		1.6	113.4
1.7	115.3

In addition, it should be noted that, when heating period S3 comprises row's cold air operation, after exhausting cold air operation S31 terminates, exhaust outlet 40 is set to closed condition again, air pressure now in cooking cavity reverts to normal atmosphere pressure condition, along with the continuation of heating, when thin rice gruel temperature is increased to 100 DEG C, water in thin rice gruel can produce the boiling of short time, the closed cavity causing a large amount of water vapours to enter into cooking cavity to hold gas, the air pressure of sealed cavity is raised rapidly, water in pot body can revert to again the state of not seething with excitement along with the rising of pressure, when temperature-detecting device 2 detects that in cooking cavity, thin rice gruel temperature is increased to T _bumpingtime, then start bumping agitating procedure.Now, due to the exhausting cold air operation S31 of back, even if the temperature that temperature-detecting device 2 detects is the gas temperature above thin rice gruel, the temperature thought and equal thin rice gruel also can be similar to.

Five-stage: boiling stage S5

Bumping stage S4 terminates rear closedown exhaust outlet 40, and that is, forced exhaust stops forced exhaust, maintains certain heating power, make the thin rice gruel in cooking cavity maintain rated pressure P after making thin rice gruel bumping once or once above _volumeunder, with rated pressure P _volumecorresponding boiling temperature T _boilconstantly boiling, until moisture content free in cooking cavity is absorbed by rice completely or along with (after namely soup is boiled dry) after explosive evaporation, the temperature bottom cooking cavity is elevated to rapidly default migration temperature T along with continuing of heating _move, preferably, 120 DEG C≤T _move≤ 130 DEG C, in this stage, the high temperature of grain of rice long term maintenance more than 100 DEG C carries out gelatinization, and the β starch of rice densification is fully changed into loose α starch structure that can be digested.

6th stage: cook rice over a slow fire stage S6

Self-boiling stage S5 terminates until the one section of t that holds time terminating to arrange that cooks _dimension(preferably, 3min≤t _dimension≤ 15min), during this period of time, electric cooker can with lower power heating, or do not heat with in direct such as cooking cavity accumulation of heat continue that waste heat is carried out to rice and mend and cook a meal, thus promote the gelatinization of rice further, promote the mouthfeel of rice.Here, it should be noted that, the difference of low-power heating and high power heating is that the speed heated is different, and such as low-power heats and can be understood as and reach a certain temperature with slower speed, and high power heats can be understood as and reaches said temperature with speed faster.

According to the cooking control method of the electric cooker of the utility model embodiment, the bumping being realized thin rice gruel by unexpected pressure release is stirred, effectively can break up the rice group forming caking, improve heating uniformity and the gelatinization uniformity of rice, improve the mouthfeel of rice and the efficiency that boils of rice.

In description of the present utility model, it will be appreciated that, term " on ", D score, "left", "right", " interior ", the orientation of the instruction such as " outward " or position relationship be based on orientation shown in the drawings or position relationship, only the utility model and simplified characterization for convenience of description, instead of the device of instruction or hint indication or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as restriction of the present utility model.

In the utility model, unless otherwise clearly defined and limited, the term such as term " installation ", " being connected ", " connection ", " fixing " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or integral; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals or the interaction relationship of two elements.For the ordinary skill in the art, the concrete meaning of above-mentioned term in the utility model can be understood as the case may be.

In the utility model, unless otherwise clearly defined and limited, fisrt feature second feature " on " or D score can be that the first and second features directly contact, or the first and second features are by intermediary mediate contact.And, fisrt feature second feature " on ", " top " and " above " but fisrt feature directly over second feature or oblique upper, or only represent that fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " below " and " below " can be fisrt feature immediately below second feature or tiltedly below, or only represent that fisrt feature level height is less than second feature.

In the description of this description, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present utility model or example.In this manual, to the schematic representation of above-mentioned term not must for be identical embodiment or example.And the specific features of description, structure, material or feature can combine in one or more embodiment in office or example in an appropriate manner.In addition, when not conflicting, the feature of the different embodiment described in this description or example and different embodiment or example can carry out combining and combining by those skilled in the art.

Although illustrate and described embodiment of the present utility model, those having ordinary skill in the art will appreciate that: can carry out multiple change, amendment, replacement and modification to these embodiments when not departing from principle of the present utility model and aim, scope of the present utility model is by claim and equivalents thereof.

Claims (21)

1. an electric cooker, is characterized in that, comprising:

Pot body, limits cooking cavity in described pot body;

Pot lid, described pot lid is located on described pot body opening or closing to open or to close described cooking cavity;

For the heater heated described cooking cavity;

For detecting the temperature-detecting device of soup temperature in described cooking cavity; And

Rated pressure P is maintained for making the pressure in described cooking cavity _volumefollowing pressure relief device, described pressure relief device is configured to detect that the soup temperature in described cooking cavity is increased to bumping temperature T when described temperature-detecting device _bumpingtime, described pressure relief device forces described cooking cavity to be vented to make the soup bumping in described cooking cavity, wherein: T _bumping< T _boil, T _boilfor the soup in described cooking cavity is at described rated pressure P _volumetime boiling temperature, and described rated pressure P _volumebe greater than standard atmospheric pressure, i.e. a P _volume> 1atm.

2. electric cooker according to claim 1, is characterized in that, after described pressure relief device is configured to force described cooking cavity to be vented at least one times further, makes the soup temperature in described cooking cavity be increased to boiling temperature T _boiland make described soup maintain described boiling temperature T _boillower constantly boiling is to boiling dry.

3. electric cooker according to claim 1, is characterized in that, described temperature-detecting device is located at described pot and covers and be communicated with the temperature of soup described in indirect detection with the gas in described cooking cavity.

4. electric cooker according to claim 1, is characterized in that, described bumping temperature T _bumpingmeet relation: T _boil-5 DEG C≤T _bumping≤ T _boil-1 DEG C.

5. electric cooker according to claim 1, is characterized in that, described pressure relief device is configured to detect that the soup temperature in described cooking cavity is increased to delivery temperature T when described temperature-detecting device further _rowtime force described cooking cavity to be vented, wherein, T _row< T _bumping.

6. electric cooker according to claim 5, is characterized in that, described delivery temperature T _rowmeet: T _row=90 DEG C.

7. electric cooker according to claim 1, it is characterized in that, described pot covers the exhaust outlet being formed with and being communicated with described electric cooker outside and described cooking cavity, described pressure relief device comprises: pressure limiting valve and pressure relief mechanism, and described pressure relief mechanism is used for ordering about described pressure limiting valve and opens or close described exhaust outlet.

8. electric cooker according to claim 7, it is characterized in that, described pot covers has cambered way, described exhaust outlet runs through the bottom of described cambered way, described pressure limiting valve to be located at slidably on described cambered way and often to keep out to cut out described exhaust outlet on described exhaust outlet, and described pressure relief mechanism is used for ordering about described pressure limiting valve along described cambered way upward sliding to open described exhaust outlet.

9. electric cooker according to claim 8, is characterized in that, described pressure relief mechanism comprises:

Electromagnet, described electromagnet comprises the iron core that can move horizontally, described electromagnet is configured to when after described electromagnet energising, and described iron core moves towards the direction of described pressure limiting valve to promote described pressure limiting valve along described cambered way upward sliding to open described exhaust outlet.

10. electric cooker according to claim 8, is characterized in that, described pressure relief mechanism comprises:

Cam pack, described cam pack comprises rotating cam, and described cam pack to be configured to when the longitudinal end of described cam promotes described pressure limiting valve described pressure limiting valve along described cambered way upward sliding to open described exhaust outlet.

11. electric cookers according to claim 9 or 10, it is characterized in that, described pressure relief device comprises further: be located at the reset linked component between described pressure relief mechanism and pressure limiting valve, described reset linked component be configured to when described pressure relief mechanism no longer promote described pressure limiting valve open described exhaust outlet time, the part of described reset linked component is moved towards the direction away from described pressure limiting valve, makes described pressure limiting valve along the free landing of described cambered way to close described exhaust outlet.

12. electric cookers according to claim 11, is characterized in that, described reset linked component comprises:

Flexible seal, described seal is located between described pressure relief mechanism and described exhaust outlet described pressure relief mechanism and described exhaust outlet to be kept apart; With

Moving part, described moving part can be connected between described pressure relief mechanism and described seal linkedly.

13. electric cookers according to claim 7, is characterized in that, described pressure relief mechanism is magnetic valve, and described pressure relief device is configured to when described magnetic valve energising, and described magnetic valve attracts described pressure limiting valve to move to open described exhaust outlet.

14. electric cookers according to claim 13, it is characterized in that, described pressure limiting valve can be located at the top of described exhaust outlet up or down, described magnetic valve is located at the top of described pressure limiting valve, described pressure relief device is configured to when described magnetic valve energising, and described magnetic valve attracts described pressure limiting valve to move up to open described exhaust outlet.

15. electric cookers any one of claim 7-10 or according to any one of claim 13-14, it is characterized in that, described pressure limiting valve is spheroid.

16. electric cookers according to claim 7, is characterized in that, described pressure limiting valve can be located at the top of described exhaust outlet up or down, and described pressure relief device comprises further:

Locating part; With

Linked component, described linked component to be connected between described pressure relief mechanism with described pressure limiting valve and to coordinate with described locating part, described pressure relief device be configured to when described pressure relief mechanism promote described linked component move towards the direction of described pressure limiting valve time, described locating part orders about described linked component and drives described pressure limiting valve synchronously to move down to close described exhaust outlet.

17. electric cookers according to claim 16, is characterized in that, described locating part is be fixed on the gag lever post above described linked component, and described linked component comprises:

Trace, described trace is connected between described pressure relief mechanism and described pressure limiting valve, and described trace can be driven by described pressure relief mechanism and move horizontally with relatively described pressure limiting valve;

Guide, described guide is fixed on described trace, described guide has and coordinates with the lower end of described gag lever post the spigot surface slided all the time,

Described pressure relief device is configured in the process driving described trace to move horizontally towards the direction of described pressure limiting valve when described pressure relief mechanism, and spigot surface upward sliding described in the described lower end edge of described gag lever post moves down to close described exhaust outlet to promote described guide, described trace and described pressure limiting valve.

18. electric cookers according to claim 16, is characterized in that, described pressure relief device comprises further:

Back-moving spring, described back-moving spring is located between described linked component and described pot lid, described back-moving spring is configured to be compressed by the described linked component moved down when described linked component moves towards the direction of described pressure limiting valve, promotes described linked component and described pressure limiting valve move to open described exhaust outlet when described back-moving spring is upspring.

19. electric cookers according to any one of claim 16-18, it is characterized in that, described pressure relief mechanism comprises: electromagnet, described electromagnet comprises and can move horizontally and the iron core be connected with described linked component, described pressure relief device is configured to when after described electromagnet energising, and described iron core moves towards the direction of described pressure limiting valve to drive described pressure limiting valve to close described exhaust outlet.

20. electric cookers according to claim 7, is characterized in that, described pressure limiting valve can be located at the top of described exhaust outlet up or down,

Described pressure relief mechanism comprises: cam pack, and described cam pack comprises rotating cam, and described cam pack is configured to the described pressure limiting valve when the longitudinal end of described cam promotes described pressure limiting valve and moves down to close described exhaust outlet.

21. electric cookers according to claim 20, it is characterized in that, described pressure relief device comprises further: back-moving spring, described back-moving spring is located between described pressure limiting valve and described pot lid, described back-moving spring is configured to be compressed by the described pressure limiting valve moved down when the longitudinal end of described cam promotes described pressure limiting valve, promotes described pressure limiting valve moves to open described exhaust outlet when described back-moving spring is upspring.