CN206560276U - Electric cooker - Google Patents

Abstract

The utility model discloses a kind of electric cooker, including：Cooker body, pot lid, heater, detection means and pressure relief device, pressure relief device are used to make the pressure in cooking cavity maintain rated pressure P_VolumeHereinafter, the soup temperature that pressure relief device is configured to detect in cooking cavity when detection means is increased to bumping temperature T_BumpingAnd/or the pressure rise in cooking cavity is to bumping pressure P_BumpingWhen, pressure relief device force cooking cavity exhaust at least more than twice, so that the pressure in cooking cavity gradually reduce, so that soup bumping in cooking cavity at least twice more than, wherein：T_Bumping≤T_Boiling, P_Bumping≤P_Volume, T_BoilingIt is the soup in cooking cavity in rated pressure P_VolumeWhen boiling temperature.According to electric cooker of the present utility model, multiple bumping can be completed after pressure is once played, so as to terminate bumping agitating procedure within the extremely short time, be effectively improved cooking efficiency.

Description

Electric cooker

Technical field

The utility model is related to cooking equipment field, more particularly, to a kind of electric cooker.

Background technology

Pointed out in correlation technique, electric cooker is during cooking, with the passage and the rising of water temperature of soak time, rice The surface of grain starts gelatinization and become sticky, and rice group can be adhesively-bonded together to form between the grain of rice and the grain of rice, due to the heat-conductive characteristic of rice Far below the heat-conductive characteristic of water, so that the grain of rice of conglomeration can hinder heat to be uniformly transferred to whole pot rice, cause and be wrapped in rice Because of that can not absorb water the half-cooked problem that can not be gelatinized completely occurs for the grain of rice in the middle of group.Moreover, the rice in electric cooker Due to levels be heated it is uneven so that the rice gelatinization degree of diverse location is also inconsistent in pot, so as to cause Excessively gelatinization becomes rotten to local rice, and the also thoroughly gelatinization of some places rice, causes the uniform of whole pot rice maturation Sex differernce is very big, influences the mouthfeel of rice.

Utility model content

The utility model is intended at least solve one of technical problem present in prior art.Therefore, the utility model exists In proposing a kind of electric cooker, the electric cooker can complete multiple bumping after pressure is once played, so as to be tied within the extremely short time Beam bumping agitating procedure, is effectively improved cooking efficiency.

According to electric cooker of the present utility model, including：Cooking cavity is limited in cooker body, the cooker body；Pot lid, the pot lid It can be opened and closed to be located in the cooker body to open or close the cooking cavity；For the heating dress heated to the cooking cavity Put；Detection means for detecting soup temperature in the cooking cavity and/or for detecting the culinary art cavity pressure；And use Rated pressure P is maintained in making the pressure in the cooking cavity_VolumeFollowing pressure relief device, the pressure relief device is configured to when described The soup temperature that detection means is detected in the cooking cavity is increased to bumping temperature T_BumpingAnd/or the pressure in the cooking cavity It is increased to bumping pressure P_BumpingWhen, the pressure relief device forces the cooking cavity to be vented at least more than twice, so that the cooking cavity Interior pressure gradually reduces, so that soup bumping in the cooking cavity at least twice more than, wherein：T_Bumping≤T_Boiling, P_Bumping≤P_Volume, T_BoilingIt is the soup in the cooking cavity in the rated pressure P_VolumeWhen boiling temperature, P_Volume＞ 1atm.

According to electric cooker of the present utility model, multiple bumping can be completed after pressure is once played, so that in the extremely short time Interior end bumping agitating procedure, is effectively improved cooking efficiency.

In certain embodiments, the pressure relief device be further configured to force the cooking cavity exhaust more than twice until Pressure in the cooking cavity is reduced to equal with the environmental pressure outside the pot lid.

In certain embodiments, during the pressure in the cooking cavity is gradually reduced, the width that a rear pressure declines Degree is less than the amplitude that a preceding pressure declines.

In certain embodiments, T_Bumping＜ T_Boiling, P_Bumping＜ P_Volume。

In certain embodiments, the bumping temperature T_BumpingMeet relation：T_Boiling-5℃≤T_Bumping≤T_Boiling-1℃。

In certain embodiments, the bumping pressure P_BumpingMeet relation：P_Volume-0.2atm≤P_Bumping≤P_Volume-0.05atm。

In certain embodiments, T_Bumping=T_Boiling, P_Bumping=P_Volume。

In certain embodiments, the pressure relief device is further configured to when the detection means detects the cooking cavity Interior soup temperature is increased to delivery temperature T_RowAnd/or the pressure rise in the cooking cavity is to delivery temperature P_RowWhen force described Cooking cavity is vented, wherein, T_Row＜ T_Bumping, P_Row＜ P_Bumping。

In certain embodiments, the delivery temperature T_RowMeet：T_Row=90 DEG C.

In certain embodiments, the pressure at expulsion P_RowMeet：1.01atm≤P_Row≤1.1atm。

In certain embodiments, the pressure relief device be further configured to force the cooking cavity exhaust more than twice it Afterwards, the soup temperature in the cooking cavity is made to be increased to boiling temperature T_BoilingAnd the soup is maintained the boiling temperature T_BoilingUnder Constantly boiling is to boiling dry.

In certain embodiments, it is formed with the pot lid and connects the electric cooker outside and the exhaust of the cooking cavity Mouthful, the pressure relief device includes：Pressure limiting valve and pressure relief mechanism, the pressure relief mechanism are used to drive the pressure limiting valve to beat on or off Close the exhaust outlet.

In certain embodiments, there is cambered way, the exhaust outlet runs through the bottom of the cambered way in the pot lid End, the pressure limiting valve is slidably disposed on the cambered way and often keeps out on the exhaust outlet to close the exhaust Mouthful, the pressure relief mechanism is used to drive the pressure limiting valve along the cambered way upward sliding to open the exhaust outlet.

In certain embodiments, the pressure relief mechanism includes：Electromagnet, the electromagnet includes horizontally movable iron Core, the electromagnet is configured to after the electromagnet is powered, and the iron core moves to promote towards the direction of the pressure limiting valve The pressure limiting valve is along the cambered way upward sliding to open the exhaust outlet；Or cam pack, the cam pack includes Rotatable cam, the cam pack is configured to the pressure limiting valve edge when the longitudinal end of the cam promotes the pressure limiting valve The cambered way upward sliding is to open the exhaust outlet.

In certain embodiments, the pressure relief device further comprises：It is located between the pressure relief mechanism and pressure limiting valve Linked component is resetted, the reset linked component is configured to when the pressure relief mechanism no longer promotes the pressure limiting valve to open the row During gas port, the direction away from the pressure limiting valve that is partially toward of the reset linked component is moved so that the pressure limiting valve is along institute State cambered way freely to slide to close the exhaust outlet, the reset linked component includes：The seal and moving part of elasticity, The seal is located at so that the pressure relief mechanism to be kept apart with the exhaust outlet between the pressure relief mechanism and the exhaust outlet, The moving part can be linkedly connected between the pressure relief mechanism and the seal.

In certain embodiments, the pressure relief mechanism is magnetic valve, and the pressure relief device is configured to when the magnetic valve leads to When electric, the magnetic valve attracts the pressure limiting valve movement to open the exhaust outlet.

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

In certain embodiments, the pressure limiting valve can be located at the top of the exhaust outlet, the pressure release dress up or down Put and further comprise：Locating part；And linked component, the linked component is connected between the pressure relief mechanism and the pressure limiting valve And coordinate with the locating part, the pressure relief device is configured to when the pressure relief mechanism promotes the linked component towards the limit During the direction movement of pressure valve, the locating part drives the linked component to drive the pressure limiting valve synchronously to move down to close the row Gas port.

In certain embodiments, the locating part is to be fixed on the gag lever post above the linked component, the gearing group Part includes：Trace, the trace is connected between the pressure relief mechanism and the pressure limiting valve, and the trace can be by described Pressure relief mechanism driving is moved horizontally with relatively described pressure limiting valve；Guide, the guide is fixed on the trace, described Have on guide and coordinate the spigot surface slided with the lower end of the gag lever post all the time, the pressure relief device is configured to let out when described During the direction of press mechanism driving trace towards the pressure limiting valve is moved horizontally, the lower end of the gag lever post Along the spigot surface upward sliding to promote the guide, the trace and the pressure limiting valve to move down to close the exhaust Mouthful.

In certain embodiments, the pressure relief device further comprises：Back-moving spring, the back-moving spring is located at the company Move between component and the pot lid, the back-moving spring is configured to when the linked component is moved towards the direction of the pressure limiting valve When the linked component compression that is moved down, the back-moving spring promotes the linked component and the pressure limiting valve to move up when upspringing To open the exhaust outlet.

In certain embodiments, the pressure relief mechanism includes：Electromagnet, the electromagnet include it is horizontally moveable and with institute The connected iron core of linked component is stated, the pressure relief device is configured to after the electromagnet is powered, the iron core is towards the limit Move to drive the pressure limiting valve to close the exhaust outlet in the direction of pressure valve.

In certain embodiments, the pressure limiting valve can be located at the top of the exhaust outlet, the pressure release machine up or down Structure includes：Cam pack, the cam pack includes rotatable cam, and the cam pack is configured to the length when the cam The pressure limiting valve moves down to close the exhaust outlet when shaft end promotes the pressure limiting valve.

In certain embodiments, the pressure relief device further comprises：Back-moving spring, the back-moving spring is located at the limit Between pressure valve and the pot lid, the back-moving spring is configured to when the longitudinal end of the cam promotes the pressure limiting valve by moving down The pressure limiting valve compression, promote the pressure limiting valve to move up when the back-moving spring is upspring to open the exhaust outlet.

Additional aspect and advantage of the present utility model will be set forth in part in the description, partly by from following description In become obvious, or by it is of the present utility model practice recognize.

Brief description of the drawings

Fig. 1 is the control temperature and pressure curve of cooking of the electric cooker according to the utility model some embodiments；

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

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

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

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

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

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

Fig. 8 is that exhaust outlet is closed in the schematic diagram of the pressure relief device according to the utility model example IV, figure；

Fig. 9 is that exhaust outlet is opened in the schematic diagram of the pressure relief device according to the utility model example IV, figure；

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

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

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

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

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

Figure 15 is the control temperature and pressure curve of cooking of the electric cooker according to the utility model other embodiments.

Reference：

1：Pressure relief device；11：Pressure limiting valve；111：Spheroid；112：Seal 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：Detection means；3：Control device；4：Pot lid；40：Exhaust outlet；41：Lid Plate；42：Support block；421：Cambered way；43：Slide passage；44：Installed part；S1：Warm-up phase；S2：The water suction stage；S3：Plus The hot stage；S31：Exhausting cold air process；S4：The bumping stage；S5：Boiling stage；S6：Cook rice over a slow fire the stage；S7：Holding stage.

Embodiment

Embodiment of the present utility model is described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning Same or similar element or element with same or like function are represented to same or similar label eventually.Below by ginseng The embodiment for examining accompanying drawing description is exemplary, it is intended to for explaining the utility model, and it is not intended that to the utility model Limitation.

Following disclosure provides many different embodiments or example is used for realizing different structure of the present utility model.For Simplify disclosure of the present utility model, hereinafter the part and setting of specific examples are described.Certainly, they are only and shown Example, and purpose does not lie in limitation the utility model.In addition, the utility model can in different examples repeat reference numerals And/or letter.This repetition is for purposes of simplicity and clarity, discussed various embodiments itself not to be indicated and/or are set Relation between putting.In addition, various specific techniques and the example of material that the utility model is provided, but this area is common Technical staff can be appreciated that the applicable property 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 14, according to the electric cooker of the utility model embodiment, including：Cooker body (not shown), pot lid 4, plus Thermal (not shown), detection means 2 and pressure relief device 1.

Cooking cavity is limited in reference picture 14, cooker body, pot lid 4 can be opened and closed to be located in cooker body to open or close culinary art Chamber, heater is used to heat cooking cavity.For example in a specific example of the present utility model, cooker body can include interior pot Body and outer boiler body, interior cooker body are located in outer boiler body, and outer boiler body is supported on outside interior cooker body, and interior cooker body is limited for accommodating food materials Cooking cavity, pot lid 4 can be pivotly connected with cooker body by hinge so that pot lid 4 can around cooker body top afterbody axis Freely rotate, heater can be heating dish etc., and cooking cavity is heated for converting electrical energy into heat energy.

Reference picture 14, detection means 2 is for detecting in cooking cavity the temperature-detecting device of soup temperature and/or for examining Survey the pressure-detecting device of culinary art cavity pressure.Here, it is necessary to which explanation, temperature-detecting device is used to directly or indirectly examine The temperature for the soup (such as thin rice gruel) surveyed in cooking cavity, for the ease of installing, temperature-detecting device may be mounted in pot lid 4 and Connected with the gas blanket of cooking cavity inner top to detect the vapor (steam) temperature of cooking cavity inner top, at this point it is possible to the side for passing through derivation Soup temperature in method indirect detection cooking cavity.For example, the temperature value that can detect temperature-detecting device adds vapor (steam) temperature Come to obtain the soup temperature in cooking cavity indirectly with the difference of soup temperature.

Reference picture 14, pressure relief device 1 is used to make cooking cavity exhaust pressure relief, specifically, and pressure relief device 1 is used to make in cooking cavity Pressure maintain rated pressure P_VolumeBelow (including equal to rated pressure P_Volume), that is to say, that when the pressure in cooking cavity exceedes Rated pressure P_VolumeWhen, the pressure (such as steam pressure) in cooking cavity can drive the automatic exhaust pressure relief of pressure relief device 1, so that really The pressure protected in cooking cavity is consistently less than equal to rated pressure P_Volume.As shown in figure 1, when the pressure in cooking cavity reaches rated pressure P_VolumeWhen (such as the 1.3atm shown in Fig. 1), the soup in cooking cavity is in rated pressure P_VolumeUnder with boiling temperature T_Boiling(such as Fig. 1 Shown in 105 DEG C) boiling.Preferably, when electric cooker is used under conventional environment in use, rated pressure P_VolumeMore than one standard Atmospheric pressure, i.e. P_Volume＞ 1atm.Certainly, the utility model not limited to this, can be with according to the electric cooker of the utility model embodiment Apply under other particular surroundings, for example, can be applied on plateau, now, rated pressure P_VolumeMore than the environment gas on plateau Pressure.

Reference picture 1, is configured to according to the pressure relief device 1 of the utility model embodiment：When detection means 2 detects cooking cavity Interior soup temperature is increased to bumping temperature T_Bumping(T_Bumping≤T_Boiling), and/or, when the pressure rise in cooking cavity to bumping pressure P_Bumping(P_Bumping≤P_Volume) when, pressure relief device 1 forces cooking cavity to be vented at least more than twice, so that the pressure in the cooking cavity is gradually Reduction, so that soup bumping in cooking cavity at least twice more than.Wherein, after each forced exhaust pressure release, the soup in cooking cavity The temperature of liquid is all higher than the boiling point corresponding to the air pressure after current decompression, so that soup can seethe with excitement suddenly, produces stirring and seethes Effect, to break up the rice group lumpd in cooking cavity, promote the uniformity of rice water suction and the uniformity of heating.

Below, more specifically explain：" pressure relief device 1 forces cooking cavity to be vented at least more than twice, so that the culinary art The pressure of intracavitary gradually reduces, so that soup bumping in cooking cavity at least twice more than " implication.

As shown in figure 1, when the pressure rise in cooking cavity to bumping pressure P_BumpingWhen (such as the 1.2atm shown in Fig. 1), Pressure relief device 1 forces the first exhaust pressure relief of cooking cavity once (to force pressure release for the first time), so that the pressure in cooking cavity is by P_BumpingUnder It is down to P₁, now the soup temperature in cooking cavity is higher than in P₁Boiling point under pressure, so that soup can seethe with excitement once (i.e. suddenly Generation first time bumping).

Then, pressure relief device 1 forces cooking cavity to be vented once (i.e. second pressure pressure release) again, so that the pressure in cooking cavity Power is by P₁Drop to P₂Although now the soup temperature in cooking cavity declines but higher than in P₂Boiling point under pressure, so that soup Liquid can suddenly seethe with excitement and (occur second of bumping) again.

The rest may be inferred, and pressure relief device 1 can force cooking cavity to carry out more exhaust pressure relief (such as shown in Fig. 1 Carry out four exhaust pressure reliefs again), so that the pressure in cooking cavity once, once be gradually reduced (such as shown in Fig. 1 again under Drop four times, i.e., fallen before from P2 to P3, fallen before from P3 to P4, fall before to P5, fallen before from P5 to P6 from P4), make soup Once, seethe with excitement once and (such as make liquid in bumping four times shown in Fig. 1).

Thus, it is possible to realize that the multiple bumping effect once risen after pressure (wherein, " once plays pressure " to refer to and work as cooking cavity Interior pressure reaches bumping pressure P_BumpingAfterwards, during forced exhaust pressure release at least twice is carried out, the pressure one in cooking cavity Directly without the elevated small stage, simply gradually reduce), more efficiently to produce the effect that stirring is seethed, break up in cooking cavity The rice group of caking, promotes the uniformity of rice water suction and the uniformity of heating.

Preferably, during the pressure in cooking cavity is gradually reduced, the amplitude that a rear pressure declines be less than it is preceding once The amplitude that pressure declines (for example in the example depicted in fig. 1, declines and drops to P2 by P1, second of decline is under P2 for the first time P3 is down to, third time declines drops to P4 by P3, and the 4th decline drops to P5 by P4；5th decline drops to P6 by P5； The amplitude that 5th pressure declines is less than the amplitude that the 4th pressure declines, P5-P6 ＜ P4-P5；The width that 4th pressure declines Degree is less than the amplitude that third time pressure declines, and P4-P5 ＜ P3-P4, the amplitude that third time pressure declines is less than under second of pressure The amplitude of drop, P3-P4 ＜ P2-P3, the amplitude that second of pressure declines is less than the amplitude that first time pressure declines, P2-P3 ＜ P1- P2)。

Thus, it is larger, relatively violent by above bumping amplitude, rice is effectively stirred using big bumping, but simultaneously can Rice is set to be distributed out-of-flatness, uneven, therefore, can just repair that above big bumping brought later by small bumping lacks Fall into, i.e., small bumping below is just corrected so that rice distribution is smooth, is so more beneficial for the thermally equivalent of rice.This In, it will be appreciated by persons skilled in the art that the amplitude that pressure declines is bigger, bumping effect is more violent, and soup rolling is more violent.

Based on above-mentioned discussion, during forcing cooking cavity exhaust repeatedly due to pressure relief device 1, the pressure in cooking cavity is Gradually reduce, therefore, pressure relief device 1 force each exhaust pressure relief of cooking cavity it is time-consuming can be reduced to it is very short so that The time-consuming of whole bumping stage S4 can effectively be shortened, while can get a desired effect.Thus, by real in a short time The multiple bumping effect after pressure is now once played, the effect that boils of rice is improved so as to higher efficiency.

In some preferred embodiments of the present utility model, as shown in figure 1, T_Bumping＜ T_Boiling, P_Bumping＜ P_Volume, that is to say, that The soup temperature that detection means 2 is detected in cooking cavity is increased to close to boiling temperature T_Boiling, and/or, when the pressure in cooking cavity It is increased to close to rated pressure P_VolumeWhen, pressure relief device 1 forces cooking cavity to be vented at least more than twice, so that in the cooking cavity Pressure gradually reduces, so that soup bumping in cooking cavity at least twice more than.Thus, it is possible to ensure that bumping effect is reliably real It is existing.For example in the example depicted in fig. 1, bumping temperature T_BumpingRelation can be met：T_Boiling-5℃≤T_Bumping≤T_Boiling-1℃；Bumping temperature P_BumpingRelation can be met：P_Volume-0.2atm≤P_Bumping≤P_Volume-0.05atm。

Certainly, the utility model not limited to this, in other embodiments of the present utility model, as shown in figure 15, T_Bumping= T_Boiling, P_Bumping=P_Volume, that is to say, that the soup temperature detected in detection means 2 in cooking cavity is increased to be equal to boiling temperature T_Boiling, And/or, when the pressure rise in cooking cavity is to equal to rated pressure P_VolumeWhen, pressure relief device 1 forces cooking cavity exhaust at least twice More than, so that the pressure in the cooking cavity gradually reduce, so that soup bumping in cooking cavity at least twice more than.Thus, It may insure that bumping effect is reliably realized.

In some embodiments of the present utility model, pressure relief device 1 be further configured to force cooking cavity exhaust twice with Above until the pressure in cooking cavity is equal with the environmental pressure outside pot lid.That is, giving forced exhaust here so as to cook The deadline of intracavitary of preparing food soup bumping, i.e., when the inside and outside pressure phase isoequilibrium of cooking cavity, then no longer carry out forced exhaust and let out Pressure.Thus, it is possible to farthest obtain bumping mixing effect, it is to avoid cause unnecessary waste, in a disguised form improve cooking efficiency. Here, it is necessary to which explanation, when the inside and outside pressure phase isoequilibrium of cooking cavity, even if cooking cavity is opened, will not also be vented and let out Pressure.

Certainly, the utility model not limited to this, in other embodiment of the present utility model, pressure relief device 1 can be with structure Cause when the pressure in cooking cavity does not drop to equal with the environmental pressure outside pot lid, just stop forced exhaust pressure release, thus, In setting program, pressure pressure release number of times need to be only limited, so as to simplify control and detection difficulty, cost is reduced, carries High control reliability.

Pressure relief device 1 is further configured to after pressure cooking cavity exhaust at least twice (i.e. after bumping stage S4 terminates) just Cooking cavity exhaust pressure relief is no longer forced, hereafter, pressure relief device can make the soup temperature in cooking cavity be increased to boiling temperature T_Boiling And soup is maintained boiling temperature T_BoilingLower constantly boiling is to boiling dry.That is, after the completion of bumping stage S4, soup is in T_Boiling At a temperature of constantly boiling, in other words, the soup in this stage is with regard to no longer carrying out bumping.Accordingly, because the grain of rice after bumping Surface has been gelatinized substantially, and the soup in later stage can be fewer and fewer, if bumping again, can make skewness of the rice in cooking cavity It is even, the soft or hard inequality of rice is caused, the rice finally cooked can also become out-of-flatness, influence mouthfeel.In addition, after bumping Rice is in T_BoilingHot environment under constantly boiling, rice can be made to be more easily formed equally distributed " cave hole ", make cooking cavity bottom The heat in portion uploads to the upper strata of rice by " cave hole ", so that realize that the levels of rice are uniformly heated, in other words, if after Continuous bumping, it is likely that the skewness in cave hole is caused, so as to further cause the soft or hard inequality of rice.

In addition, reference picture 14, electric cooker can also include control device 3, control device 3 can include single-chip microcomputer, correlation Circuit hardware loop, signal are received and control loop etc., and control device 3 can be by gathering the real-time letter of above-mentioned detection device 2 Number, control of the computing output to pressure relief device 1 is handled by program, to realize the control to cooking cavity exhaust condition.

According to the electric cooker of the utility model embodiment, the boiling stage that can control to cook by pressure relief device 1 passes through Pressure relief device 1 and detection means 2 can realize the bumping stage before boiling stage, that is to say, that pass through a pressure relief device 1 It can take into account and realize bumping process and boiling process, so that electric cooker is simple in construction, be easy to processing, production cost is low, In addition, can effectively break up the rice of conglomeration in cooking cavity in the bumping stage, improve the uniformity of rice water suction and be heated Efficiency so that every rice can absorb water gelatinization well, improves the uniformity and uniformity of rice gelatinization, optimizes rice Mouthfeel.

In one embodiment of the present utility model, pressure relief device 1 is further configured to when detection means 2 detects culinary art The temperature of the soup of intracavitary is increased to delivery temperature T_RowAnd/or the pressure rise in cooking cavity is to delivery temperature P_RowWhen, make culinary art Chamber is vented at least one times to discharge the cold air in cooking cavity (as shown in the S31 stages in Fig. 1), wherein, T_Row＜ T_Bumping, P_Row＜ P_Bumping, alternatively, T_Row=90 DEG C, 1.01atm≤P_Row≤1.1atm.That is, can before the bumping stage during cooking To set the exhausting cold air stage.So, electric cooker is at the initial stage of cooking, with continuing for heating process, the soup temperature in cooking cavity Gradually rise, the rise of the solubility with temperature of gas is gradually reduced in soup, and the gas separated out from soup gradually increases, cause Gradually rise the air pressure in cooking cavity, due to cooking cavity and the extraneous gas not occurred substantially in convection current, and soup and cooking cavity Body is only very slow by air layer progress heat transfer, heat transfer rate, so as to cause the air layer and remote soup on soup surface The temperature difference between the air layer on surface is larger, after the temperature of soup is increased to more than 90 DEG C, by controlling pressure relief device 1 will Cold air in cooking cavity is quickly discharged into outside electric cooker, so that the air themperature in cooking cavity is uniformly distributed, is improved Cooking efficiency, improves cold air and there is the rice discoloration problem caused.

For the ease of installing, temperature-detecting device may be mounted in pot lid 4 and be examined with the gas connection in cooking cavity The gas temperature of cooking cavity inner top is surveyed, for example in the example in figure 14, temperature-detecting device is arranged in pot lid 4, and temperature The upper end of detection means is embedded in pot lid 4, the lower end of temperature-detecting device pass downwards pot lid 4 and with the gas at the top of cooking cavity Body is contacted directly to detect the gas temperature in cooking cavity, and then obtains fluid temperature in cooking cavity indirectly, for example, can pass through Soup temperature in the method indirect detection cooking cavity of derivation.

So, before the exhausting cold air stage is carried out, due to pressing close to the air layer and the sky away from soup surface on soup surface The temperature difference of gas-bearing formation is larger, and temperature difference T can be increased to 10 DEG C~25 DEG C, now, and the gas in cooking cavity is detected when detection means 2 When temperature is increased to 90 DEG C-Δ T, it is believed that the soup temperature in cooking cavity is increased to 90 DEG C of delivery temperature, can now enter Row exhausting cold air is acted.In addition, it is necessary to explanation, after the exhausting cold air stage terminates, the air themperature in cooking cavity is uniformly divided Cloth, the gas temperature that detection means 2 is detected can consider equal to the soup temperature in cooking cavity.

In some embodiments of the present utility model, as shown in figure 14, according to the pressure relief device 1 of the utility model embodiment Including：The outside of connection pot lid 4 and the exhaust outlet 40 of cooking cavity, pressure release machine are formed with pressure limiting valve 11 and pressure relief mechanism 12, pot lid 4 Structure 12 is used to drive pressure limiting valve 11 to open or close exhaust outlet 40.Thus, by controlling pressure relief mechanism 12 just can the row of control Gas pressure release works, so that convenient manipulation and control, and be easy to implement and install.Certainly, the utility model not limited to this, can be with The pressure release bumping process and pressure release exhausting cold air process of electric cooker are controlled (such as by manual mode) by other means.

Specifically, exhaust outlet 40 is the outlet for the mandatory high steam discharge being opened so that in cooking cavity, The pressure in cooking cavity is caused to fall below the default rated pressure P of pressure limiting valve 11 by quick steam discharge_Volume, pressure relief mechanism 12 is Driven by control device 3, control pressure limiting valve 11 realizes the drive mechanism for opening or closing the action of exhaust outlet 40, and pressure limiting valve 11 is used for Connection blocks the cooking cavity air extraneous with electric cooker, limits pressure fixing of the cooking cavity after pressure is played default specified Pressure P_Volume, when the pressure of cooking cavity is less than the default rated pressure P of pressure limiting valve 11_VolumeWhen, pressure limiting valve 11, which is in, closes exhaust outlet 40 State, when the pressure in cooking cavity be higher than the default rated pressure P of pressure limiting valve 11_VolumeWhen, the pressure in cooking cavity will can be limited Pressure valve 11 is automatically opened up, and in the state for opening exhaust outlet 40, causes that the air pressure in cooking cavity is again extensive with automatic-discharging steam Rated pressure P is arrived again_Volume。

In some embodiments of the present utility model, pressure limiting valve 11 can be a quality be m rigid spheres 111 (or Seal block piece 112), spheroid 111 (or sealing block piece 112) lid is located on the exhaust outlet 40 that cross-sectional area is S, by spheroid 111 (or sealing block piece 112) itself deadweight and the ratio of cross-sectional area of exhaust outlet 40 limit the pressure in cooking cavity, this When, the default rated pressure P of pressure limiting valve 11_VolumeFor P_Volume=mg/S, it is preferable that rated pressure P_VolumeMeet：1.1atm≤P_Volume≤ 1.4atm.But, when the pressure in cooking cavity is less than the default rated pressure P of pressure limiting valve 11_VolumeWhen, although pressure limiting valve 11 can not be by Pressure in cooking cavity is automatically opened up, but can be by control pressure relief mechanism 12 mechanically to open pressure limiting valve 11.

The pressure relief device 1 according to the multiple specific embodiments of the utility model is described below with reference to Fig. 2-Figure 13.

Embodiment one,

As shown in Figures 2 and 3, pressure limiting valve 11 is to have cambered way 421 in spheroid 111, pot lid 4, and exhaust outlet 40 runs through The bottom of cambered way 421, spheroid 111 is slidably disposed on cambered way 421 and often keeps out on exhaust outlet 40 to close Exhaust outlet 40, pressure relief mechanism 12 can promote spheroid 111 arcuately the upward sliding of slideway 421 to open exhaust outlet 40.Such as Fig. 2 institutes Show, pot lid 4 can include enclosing cover and cover plate 41, cover plate 41 is located at the bottom of enclosing cover, and pressure relief device 1 can be located at enclosing cover and cover plate Between 41, the center on cover plate 41 can have can install support block 42, cambered way at the mounting hole of insertion, mounting hole 421 are downwardly concaved by the upper surface of support block 42 and are formed, and exhaust outlet 40 can be along the vertical direction through support block 42 and through arc The bottom of shape slideway 421, with connect the top of cooking cavity and cover plate 41 and with the space of electric cooker ft connection.

Further, reference picture 2 and Fig. 3, spheroid 111 are rollably located on cambered way 421, when spheroid 111 not by During other external force, spheroid 111 can be parked in the bottom of cambered way 421 to block exhaust outlet 40 all the time under gravity (as shown in Figure 2) so that blocked outside cooking cavity and electric cooker, when spheroid 111 is by thrust from generally horizontal direction, Spheroid 111 can open exhaust outlet 40 (as shown in Figure 3) along the upward sliding of cambered way 421 so that cooking cavity and electricity Rice cooker ft connection, when remove act on the thrust on spheroid 111 when, spheroid 111 can be dropped back into again under gravity To the bottom of cambered way 421 to block, close exhaust outlet 40 (as shown in Figure 2) again.So repeatedly, it is possible to achieve exhaust outlet 40 opening and closing.

Further, reference picture 2 and Fig. 3, pressure relief mechanism 12 include：Electromagnet 123 and moving part 121, electromagnet 123 are wrapped Horizontally movable iron core 1231 is included, moving part 121 is located between iron core 1231 and spheroid 111 and is connected with iron core 1231, lets out Pressure device 1 is configured to after electromagnet 123 is powered, and iron core 1231 is towards the direction (such as the right shown in Fig. 2) of spheroid 111 Motion with promoted indirectly by moving part 121 spheroid 111 arcuately the upward sliding of slideway 421 to open exhaust outlet 40 (such as Fig. 3 institutes Show), after electromagnet 123 is powered off, the thrust to spheroid 111 can be removed, spheroid 111 can under gravity, again Fall back to the bottom of cambered way 421 to block, close exhaust outlet 40 (as shown in Figure 2) again.

For example in the figure 2 example, sliding passage 43 can be limited in pot lid 4, moving part 121 can be set horizontal sliding In sliding passage 43, left end and the iron core 1231 of moving part 121 are fixedly linked, and the right-hand member and spheroid 111 of moving part 121 are mutual Effect, electromagnet 123 be powered after, iron core 1231 promote moving part 121 move right with promote spheroid 111 to upper right side movement with Exhaust outlet 40 is opened, after electromagnet 123 is powered off, iron core 1231 discharges the thrust to spheroid 111, and spheroid 111 can be in gravity Effect is lower to be slid to close exhaust outlet 40.Thus, the pressure relief device 1 of the present embodiment one it is simple in construction, be easy to implement and control.

Here, it is necessary to which explanation, the structure of electromagnet 123 should be as it is known to those skilled in the art that not making here in detail State, be only briefly described, electromagnet 123 can include coil and iron core 1231, coil can around be located on iron core 1231 and with Iron core 1231 coordinates in magnetic force intracavitary translatablely jointly, can make iron core 1231 after coil electricity (i.e. electromagnet 123 is powered) The magnetic field opposite with magnetic force chamber is produced, so as to be directed away from direction (such as the right shown in Fig. 2) translation of magnetic force chamber, works as line After circle power-off, magnetic field disappears, and iron core 1231 can be with stop motion.

Specifically, pressure relief device 1 can further include：The reset being located between pressure relief mechanism 12 and pressure limiting valve 11 is interlocked Component, resets linked component and is configured to, when pressure relief mechanism 12 no longer promotes pressure limiting valve 11 to open exhaust outlet 40, reset gearing group Part is directed away from the direction motion of pressure limiting valve 11 so that arcuately slideway 421 freely slides to close exhaust outlet 40 pressure limiting valve 11. Specifically, resetting linked component can include：The seal 122 and moving part 121 described above of elasticity, seal 122 are set So that pressure relief mechanism 12 and exhaust outlet 40 to be kept apart between pressure relief mechanism 12 and exhaust outlet 40, so as to avoid from the row of exhaust outlet 40 The steam gone out disturbs the normal work of pressure relief mechanism 12, and moving part 121 can linkedly be connected to pressure relief mechanism 12 and seal 122 Between, that is to say, that pressure relief mechanism 12 can drive seal 122 to move by moving part, and seal 122 can also be by even Moving part driving pressure relief mechanism 12 is moved.

For example in the figure 2 example, seal 122 is connected to the right-hand member of moving part 121, when the not company of promotion of iron core 1231 During moving part 121, seal 122 is in nature shape and middle part 1221 is directed away from the direction retraction of spheroid 111 (such as Fig. 2 institutes Show), when iron core 1231 promotes moving part 121 to move right, moving part 121 promotes the middle part 1221 of seal 122 towards ball The direction protrusion (as shown in Figure 3) of body 111, so that seal 122 deforms upon flexible potential energy, when iron core 1231 stops transporting When dynamic, moving part 121 no longer promotes to the right the middle part 1221 of seal 122, and the middle part 1221 of seal 122 can be in elastic force In the presence of resile and be retracted again to away from the direction of spheroid 111, and then promote moving part 121 and iron core 1231 to put down to the left Move.Certainly, the utility model not limited to this, can also be set by one end on the length direction of moving part 121 and reset bullet The mode of spring realizes recalling to the left for trace 113, and I will not elaborate.

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 part uses phase Same reference, the difference is that only：The electromagnet in embodiment one is replaced using cam pack in the present embodiment two 123.Wherein, cam pack can be the motor 124 with cam 1242.

Specifically, reference picture 4 and Fig. 5, pressure relief mechanism 12 include：Motor 124 and cam 1242, motor 124 have output Axle 1241, cam 1242 is arranged on output shaft 1241 to be rotated with being driven by motor 124, and moving part 121 is located at cam 1242 Between spheroid 111, during the driving cam 1242 of motor 124 is rotated, the outer peripheral face of cam 1242 can pass through the company of promotion The right side of moving part 121 causes moving part 121 to translate in the lateral direction, when cam 1242 turns to the outer peripheral face of its longitudinal end When being contacted with moving part 121 (as shown in Figure 5), moving part 121 moves to promote spheroid 111 along arc towards the direction of spheroid 111 The upward sliding of shape slideway 421 is to open exhaust outlet 40, when cam 1242 turns to the outer peripheral face at its short axle end and moving part 121 connects When touching (as shown in Figure 4), moving part 121 is no longer influenced by thrust to the right, so as to discharge the thrust to spheroid 111, spheroid 111 can To slide under gravity to close exhaust outlet 40.Thus, the pressure relief device 1 of the present embodiment two it is simple in construction, be easy to Realize and control.

Thus, there is no operating noise during being worked due to cam pack, so as to undisturbedly control pressure limiting valve 11 On-off action, so, user during being cooked using electric cooker, electric cooker be not present operating noise, so as to improve The comfort of electric cooker so that electric cooker is more 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, and wherein identical part uses phase Same reference, difference includes：The electromagnet 123 in embodiment one is replaced using magnetic valve 125 in the present embodiment three, And the direction of motion of spheroid 111 is vertical direction.

Specifically, spheroid 111 can be located at the top of exhaust outlet 40 up or down, and pressure relief mechanism 12 is magnetic valve 125, is let out Pressure device 1 is configured to when magnetic valve 125 is powered, and magnetic valve 125 attracts spheroid 111 to move up to open exhaust outlet 40.Ginseng According to Fig. 6 and Fig. 7, magnetic valve 125 can be located at the top of spheroid 111, and magnetic valve 125 can produce magnetic force to attract metal material Spheroid 111 move up, so as to open exhaust outlet 40, after magnetic valve 125 is powered off, the magnetic force of magnetic valve 125 disappears no longer Attract spheroid 111, spheroid 111 can be fallen under gravity, to close exhaust outlet 40.Certainly, the utility model is not limited In this, spheroid 111 can not also be made up of metal material, and the magnetic material that can be attracted now need to be only set on spheroid 111 Materials and parts.

Here, the structure of magnetic valve 125 should be as it is known to those skilled in the art that be not described herein in detail, and only make briefly Bright, magnetic valve 125 can include coil 1251 and magnetic material piece 1252, coil 1251 around being located on magnetic material piece 1252, It can magnetize magnetic material piece 1252 with magnetic, so as to attract spheroid 111, when coil 1251 after coil 1251 is powered After power-off, the magnetic of magnetic material piece 1252 can disappear, and no longer attract spheroid 111.

Here, it is necessary to which in explanation, above three embodiment, pressure limiting is carried out due to employing spheroid 111, if Want preferably to produce bumping phenomenon, the ratio that exhaust outlet 40 is preferably processed is larger, meanwhile, the weight of spheroid 111, which is preferably also, to be compared Weight, so as to easily realize preferable bumping effect.But, if the ratio that exhaust outlet 40 is processed is larger, and spheroid 111 is added Work it is heavier, then pot lid 4 can be caused thicker, pushed up using electromagnet 123 or magnetic valve 125 body 111 of kicking off be required to it is larger Power.And above mentioned problem, comparison of the exhaust outlet 40 without processing is just not present in the pressure limiting valve 11 in three following embodiments Greatly, pot lid 4 is without the thicker of processing, and only needs less power pressure limiting valve 11 just to open exhaust outlet 40, does not allow during work The problem of easily occurring stuck, can reliably ensure that electric cooker reliably works.

Example IV,

As shown in Figure 8 and Figure 9, the present embodiment is roughly the same with the structure of embodiment one, and wherein identical part uses phase Same reference.

Specifically, pressure limiting valve 11 is sealing block piece 112, and sealing block piece 112 can be located at the upper of exhaust outlet 40 up or down Side, pressure relief device 1 further comprises：Locating part and linked component, linked component be connected to pressure relief mechanism 12 and pressure limiting valve 11 it Between and with locating part coordinate, pressure relief device 1 be configured to when pressure relief mechanism 12 promote linked component towards pressure limiting valve 11 direction move When dynamic, locating part drives linked component to drive pressure limiting valve 11 is synchronous to move down to close exhaust outlet 40.

Locating part is to be fixed on the gag lever post 116 above linked component, and linked component includes：Trace 113 and guide 115, trace 113 is connected between pressure relief mechanism 12 and pressure limiting valve 11, and trace 113 can be driven with relative by pressure relief mechanism 12 Pressure limiting valve 11 is moved horizontally, and guide 115 is fixed on trace 113, on guide 115 have all the time with gag lever post 116 Lower end coordinates the spigot surface slided, and pressure relief device 1 is configured to when pressure relief mechanism 12 drives trace 113 towards the side of pressure limiting valve 11 During moving horizontally, the lower end edge spigot surface upward sliding of gag lever post 116 is to promote guide 115, the and of trace 113 Pressure limiting valve 11 moves down to close exhaust outlet 40.

For example in Fig. 8 and Fig. 9 example, sealing block piece 112 is vertically extending, and can on exhaust outlet 40 Move up and down, trace 113 can be substantially horizontally extending, the left end of trace 113 can be with the stationary phase of iron core 1231 Even, the right-hand member of trace 113 is to the right through sealing block piece 112 and horizontally moveable relative to the sealing block piece 112, and even Lever 113 can drive sealing block piece 112 synchronizing moving in the vertical direction during moving up and down, guide 115 is fixed On the upper surface of the right-hand member of trace 113, so that guide 115, driving trace 113, sealing block piece 112 can be It is synchronized with the movement on above-below direction.

For example in Fig. 8 and Fig. 9 example, spigot surface is extended obliquely downward along direction from left to right, gag lever post 116 Suspension is arranged in pot lid 4 and is always positioned at the top of spigot surface, and the lower end of gag lever post 116, which is stopped, to be against on spigot surface, thus, when When iron core 1231 promotes the direction (such as the right shown in Fig. 8) of trace 113 towards pressure limiting valve 11 mobile, due to gag lever post 116 position is fixed, and the lower end of gag lever post 116 can promote guide 115 to be kept off with dynamic sealing along spigot surface upward sliding Part 112 and trace 113 move down to close exhaust outlet 40 (as shown in Figure 8).

Specifically, as shown in figure 8, exhaust outlet 40 can directly run through cover plate 41 along the vertical direction, the top of cover plate 41 can To set installed part 44, the upper end of sealing block piece 112 passes through installed part 44, and by the guide effect of installed part 44 can above and below Mobile, the lower end of sealing block piece 112 has sealing gasket 114, close when sealing block piece 112, which is moved downward to, blocks exhaust outlet 40 Packing 114 can seal the periphery of exhaust outlet 40, to realize that better seal is acted on.

Further, pressure limiting valve 11 further comprises：Back-moving spring 119, back-moving spring 119 is located at trace 113 and pot Between lid 4, back-moving spring 119 is configured to be compressed when direction movement of the trace 113 towards pressure limiting valve 11, works as trace 113 are directed away from upspringing trace 113 during the direction movement of pressure limiting valve 11 so that sealing block piece 112 moves up opening exhaust outlet 40.For example in Fig. 8 and Fig. 9 example, back-moving spring 119 is scalable along the vertical direction, and the upper and lower ends of back-moving spring 119 Only it is against respectively on the upper surface of the lower surface of trace 113 and installed part 44, when iron core 1231 promotes to the right trace 113 When, gag lever post 116 along spigot surface move up when, trace 113 is moved down with compression reseting spring 119 by promotion, works as iron core 1231 when being no longer applied to the thrust of trace 113 to the right, and gag lever post 116 no longer has the promotion along spigot surface upward sliding Power, so that trace 113 no longer press against downward compression reseting spring 119, now, back-moving spring 119 can recover shape, with Pop up, band dynamic sealing block piece 112 pops up opening exhaust outlet 40, while so that gag lever post 116 is along being oriented to downwards Slide, trace 113 promotes iron core 1231 to slide to the left.

Thus, compared with above three embodiment (and following two embodiments), at the pressure relief device 1 in the present embodiment In normally open (i.e. electromagnet 123 is often in "on" position), so that pressure limiting valve 11 often closes exhaust outlet 40, let out when needing exhaust During pressure, pressure relief device 1 (powering off electromagnet 123) is closed, so that pressure limiting valve 11 opens exhaust outlet.And above three embodiment In (and following two embodiments), pressure relief device 1 be in normally off, pressure limiting valve 11 often close exhaust outlet 40, when need row During gas pressure release, start pressure relief device 1, so that pressure limiting valve 11 opens exhaust outlet 40.

Embodiment five,

As shown in Figure 10 and Figure 11, the present embodiment is roughly the same with the structure of example IV, and wherein identical part is used Identical reference.

Specifically, pressure limiting valve 11 can be located at the top of exhaust outlet 40 up or down, and pressure relief mechanism 12 includes：Cam set Part, cam pack includes rotatable cam 1242, and cam pack is configured to when the longitudinal end of cam 1242 promotes pressure limiting valve 11 When pressure limiting valve 11 move down to close exhaust outlet 40.Reference picture 10 and Figure 11, pressure relief mechanism 12 include：(such as stepping electricity of motor 124 Machine) and cam 1242, motor 124 has output shaft 1241, and cam 1242 is arranged on output shaft 1241 to drive by motor 124 Dynamic rotation, the outer peripheral face of cam 1242 is directly or indirectly only against on sealing block piece 112, such as close in Figure 10 example The upper end of block part 112 can be fixed with horizontally disposed stair cased baffles 117, and the outer face of cam 1242, which is stopped, is against baffle plate On 117 upper surface, so that be only against on sealing block piece 112 indirectly, during the driving cam 1242 of motor 124 is rotated, When the major axis outer peripheral face of cam 1242, which stops, to be against on baffle plate 117, sealing block piece 112 is driven by baffle plate 117 and moved down, with the row of closing Gas port 40 (such as Figure 10's is shown), when the short axle outer peripheral face of cam 1242, which stops, to be against on baffle plate 117, sealing block piece 112 is no longer Moved down by promotion, so as to open exhaust outlet 40 (such as Figure 11's is shown).

Further, pressure limiting valve 11 can further include：Back-moving spring 119, back-moving spring 119 is located at sealing block piece Between 112 and pot lid 4, for example in the example of fig. 11, back-moving spring 119 is scalable along the vertical direction, and back-moving spring 119 Upper and lower ends are only against on the upper surface of the lower surface of baffle plate 117 and installed part 44 respectively, and back-moving spring 119 is configured to work as cam 1242 major axis outer peripheral face stops is compressed (such as Figure 10's is shown) when being against on sealing block piece 112, when outside the short axle of cam 1242 Side face stops upsprings when being against on sealing block piece 112, seals block piece 112 to open exhaust outlet 40 (such as Figure 11's is shown).Certainly, originally Utility model not limited to this, the homing action of sealing block piece 112 can also be realized by other means.

Embodiment six,

As shown in Figure 12 and Figure 13, the present embodiment is roughly the same with the structure of example IV, and wherein identical part is used Identical reference, difference includes：Electromagnet 123 in example IV is replaced using magnetic valve 125.

Specifically, 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, pressure relief device 1 is configured to when magnetic valve 125 is powered, and magnetic valve 125 attracts sealing block piece 112 to move up with the row of opening Gas port 40.Reference picture 12 and Figure 13, magnetic valve 125 can be located at the top of sealing block piece 112, and sealing block piece 112 can be gold Belong to material pieces or metal material materials and parts (such as the sheet metal 118 described in Figure 13) can be fixed in the upper end of sealing block piece 112, Magnetic valve 125 can produce magnetic force to attract the sealing block piece 112 with sheet metal 118 to move up, so as to open exhaust outlet 40, after magnetic valve 125 is powered off, the magnetic force of magnetic valve 125, which disappears, no longer attracts spheroid 111, spheroid 111 can gravity work Fallen under, to close exhaust outlet 40.

Below with reference to the accompanying drawings 1 description is according to the cooking control method of the electric cooker of the utility model embodiment, shown in Fig. 1 Transverse axis represent the time, the longitudinal axis in left side represents cooking cavity bottom temp, and the longitudinal axis on right side represents culinary art cavity pressure, and temperature is bent Line T represents cooking cavity bottom temp and changed with time, and pressure curve P represents culinary art cavity pressure and changed with time.

Specifically, the bottom outside cooking cavity can be provided with and be used for the heater of cooking cavity bottom-heated and for detecting The temperature sensor (the temperature curve T shown in Fig. 1 is exactly to be measured by the temperature sensor) of cooking cavity bottom temp, according to The temperature of cooking cavity bottom change with time 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, in addition, after the stage S6 of cooking rice over a slow fire terminates There can also be holding stage S7.Certainly, the utility model not limited to this, heater can not also be located at the bottom of cooking cavity Portion.

First stage：Warm-up phase S1

After the rice-cooking function for starting electric cooker, cooking cavity can be heated by heater, so that in cooking cavity Thin rice gruel temperature water suction temperature T is increased to by room temperature_Inhale, alternatively, 40 DEG C≤T_Inhale≤60℃.Thus, warm-up phase S1 is main Effect is thin rice gruel is warming up to the optimum temperature interval that the suitable grain of rice absorbs water by quickly heating.

Second stage：Water suction stage S2

After warm-up phase S1 terminates, the heating of low-power can be carried out by heater, so that the thin rice gruel in cooking cavity Temperature maintains T_Inhale, and continue one section of duration t₁, it is preferable that 5min≤t₁≤30min.Thus, the water suction stage can enter the grain of rice Row fully absorbs water so that the moisture content of rice ensures to be increased to the level 20%~28% after in the water suction stage terminating.Separately Outside, thin rice gruel temperature is maintained to the optimum temperature T of suitable grain of rice water suction_InhalePurpose be：Thin rice gruel temperature is too low to cause the grain of rice Absorption speed is reduced, and causes absorbent time long, and temperature is too high to cause the grain of rice to be become sticky in water suction phase table batter, too early shape Into the rice group of caking, the grain of rice water suction of rice cluster centre is hindered.

Phase III：Heating period S3

After water suction stage S2 terminates, powerful heating can be carried out by heater, so that the thin rice gruel in cooking cavity Temperature is by T_InhaleQuickly it is increased to default migration bumping temperature T_Bumping。

In this stage, on the one hand rice may proceed to water swelling, on the other hand because thin rice gruel temperature is higher, rice skin section Position can start gelatinization and become sticky, and cause the grain of rice to be bonded together to form rice group, and rolling into a ball the middle grain of rice in rice can be because outside rice The encirclement of group and occur absorption speed and decline or the problem of water suction is difficult.

In addition, in the process, with continuing for heating process, the coolant-temperature gage more and more higher in pot, now in water Gas solubility can be gradually reduced with temperature rise so that the gas dissolved originally in water is gradually separated out to be floated in the form of bubble Rise and be discharged into the closed cavity in addition to thin rice gruel in cooking cavity, because gas can not circulate and substantially in closed cavity Do not occur convection current, on the one hand, the air pressure in closed cavity can be caused to rise to more than outside atmosphere pressure, another aspect, by In heated rice water only carries out heat transfer, heat transfer with closed air chamber by air layer in gas pot in closed cavity Speed is very slow, and the air themperature in cooking cavity away from thin rice gruel surface can be caused to produce ratio with the air themperature close to thin rice gruel surface Larger temperature difference T, Δ T differences size can and different, general difference different because of the amount of the structure space of product or rice of cooking Different value is 10 DEG C~25 DEG C, causes the gas temperature and the reality of thin rice gruel of the cooking cavity for the detection of detection means 2 being arranged in pot lid 4 Border temperature difference is very big.

It therefore, it can add a row cold air process S31 in the heating period, i.e., by forcibly opening exhaust outlet 40 cause the cold air in cooking cavity to be discharged to outside cooking cavity, on the one hand make the gas temperature away from thin rice gruel surface in cooking cavity It is more nearly with the gas temperature close to thin rice gruel surface so that the gas temperature that detection means 2 is detected is closer to thin rice gruel temperature, separately On the one hand the problem of rice that can be reduced cold air presence after discharge cold air and cause changes colour.

Specifically, in heating period S3, after up to more than 90 DEG C of thin rice gruel temperature rise, when the detection dress of detection gas temperature The gas temperature angle value T for putting 2 detections is met：During T >=90 DEG C-Δ T, by controlling pressure relief device 1 to open exhaust outlet 40, and keep Certain duration t2, wherein, the duration t2 of the exhausting cold air of exhaust outlet 40 can have according to the volume of cooking cavity and the amount of rice Body is set, usually, and t2 is met：1s≤t2≤30s, stream is forced so that being realized in cooking cavity with electric cooker ambient atmosphere It is logical, the cold air in cooking cavity is quickly discharged into outside electric cooker.

Here, it is necessary to which explanation, when detection means 2 can directly detect soup temperature, is detected when detection means 2 Soup temperature T ' is met：During T ' >=90 DEG C, directly by controlling pressure relief device 1 to open exhaust outlet 40, and when keeping certain Long t2.Thus, it is possible to effectively improve due to the rice discoloration problem that cold air is present and causes.

Fourth stage：Bumping stage S4

A bumping agitating procedure S4 is inserted before starting after S3 terminates in the heating period with boiling stage S5, by unexpected Pressure release change so that the thin rice gruel in cooking cavity produces the effect of bumping and scalds progress tumbling motion to stir rice, to break up knot The rice group of block, promotes the uniformity of whole pot rice water suction and heating.

Bumping temperature T is increased to when detection means 2 detects thin rice gruel temperature in cooking cavity_BumpingAnd/or the pressure in cooking cavity It is increased to bumping pressure P_BumpingWhen, by controlling above-mentioned pressure relief device 1 to act more than at least twice, (each duration can basis Actual requirement is set), exhaust outlet 40 is opened more than at least twice, so as to make the pressure in cooking cavity gradually reduce, finally Normal atmosphere pressure condition (such as one standard atmospheric pressure 1atm) can be down to, that is to say, that pass through the multiple pressure of short time Pressure release, makes the pressure in cooking cavity gradually decline, finally to atmospheric pressure state so that the rice in each pressure leak process in cooking cavity Soup can be higher than the boiling temperature under the air pressure after current pressure release due to temperature and acutely be seethed with excitement suddenly, produce what stirring was seethed Effect, produced with the impulsive force of bumping, the grain of rice is seethed stirring break up the heating period because the gelatinization of grain of rice surface becomes sticky and caused by Caking rice group, promote the overall water suction uniformity of rice and the uniformity heated.

Wherein, bumping temperature T_BumpingCan be the rated pressure P close to pressure limiting valve 11_VolumeCorresponding boiling temperature T under state_Boiling Temperature, for instance, it is preferred that T_BumpingMeet：T_Boiling-5℃≤T_Bumping≤T_Boiling- 1 DEG C, now, when detection means 2 is detected in cooking cavity Soup temperature be increased to close to boiling temperature T_BoilingWhen, it is possible to the multiple bumping operation after once boosting is proceeded by, wherein, Boiling temperature T_BoilingBy the effects of air pressure in cooking cavity, boiling temperature T under different pressures state_BoilingDifference, specific corresponding to relation is shown 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 is necessary to explanation, when heating period S3 includes row cold air process S31, exhausting cold air process S31 terminates Afterwards, exhaust outlet 40 is set to closed mode again, and now the air pressure in cooking cavity reverts to normal atmosphere pressure condition, with heating Continuation, when thin rice gruel temperature is increased to 100 DEG C, the water in thin rice gruel can produce the boiling of short time, cause substantial amounts of water vapour Enter in cooking cavity in the closed cavity for accommodating gas so that the air pressure of sealing cavity is raised rapidly, and the water in pot can be with The rise of pressure and revert to the state do not seethed with excitement, T is increased to when detection means 2 detects thin rice gruel temperature in cooking cavity_Bumping When, then start bumping agitating procedure.Now, due to the exhausting cold air process S31 of back, even if the temperature that detection means 2 is detected For the gas temperature above thin rice gruel, the temperature equal to thin rice gruel can also be approximately considered.

5th stage：Boiling stage S5

Bumping stage S4 closes exhaust outlet 40 after terminating, and stops forced exhaust, maintains certain heating power so that culinary art The thin rice gruel of intracavitary maintains rated pressure P_VolumeUnder, with rated pressure P_VolumeCorresponding boiling temperature T_BoilingConstantly boiling, until cooking cavity Interior free moisture content is absorbed or with (i.e. soup boil dry afterwards) after explosive evaporation by rice completely, the temperature of cooking cavity bottom with That heating persistently quickly rises to default migration temperature T_Move, it is preferable that 120 DEG C≤T_Move≤ 130 DEG C, in this stage, the grain of rice The long-term high temperature for maintaining more than 100 DEG C is gelatinized, and the fine and close β starch of rice is sufficiently converted into and can inhaled by human consumption The loose α starch structures received.

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

Self-boiling stage S5 terminates until the one section of t that holds time for terminating to set that cooks_Dimension(preferably, 3min≤t_Dimension≤ 15min), this period, electric cooker can be with than relatively low power heating, or does not heat with directly such as cooking cavity Accumulation of heat persistently carries out waste heat benefit to rice and cooked a meal, so as to further promote the gelatinization of rice, lifts the mouthfeel of rice.Here, it is necessary to Illustrate, low-power heating is that the speed heated is different with the difference that high power is heated, such as low-power heating can be managed Solve to reach a certain temperature with slower speed, high power heating can be understood as reaching said temperature with faster speed.

According to the cooking control method of the electric cooker of the utility model embodiment, rice is realized by repeatedly continuous pressure release suddenly The multiple continuous bumping stirring of soup, so as to effectively break up the rice group to form caking, improve rice heating uniformity and Uniformity is gelatinized, the mouthfeel of rice and the efficiency that boils of rice is improved.

In description of the present utility model, it is to be understood that term " on ", " under ", "left", "right", " interior ", " outer " etc. The orientation or position relationship of instruction are, based on orientation shown in the drawings or position relationship, to be for only for ease of description the utility model Described with simplifying, rather than indicate or imply that the device or element of meaning there must be specific orientation, with specific orientation structure Make and operate, therefore it is not intended that to limitation of the present utility model.

In the utility model, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " Gu It is fixed " etc. term should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integrally；Can be Be joined directly together, can also be indirectly connected to by intermediary, can be two element internals connection or two elements it is mutual Interactively.For the ordinary skill in the art, it can understand that above-mentioned term is new in this practicality as the case may be Concrete meaning in type.

In the utility model, unless otherwise clearly defined and limited, fisrt feature is "above" or "below" second feature Can be that the first and second features are directly contacted, or the first and second features pass through intermediary mediate contact.Moreover, first is special Levy 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 ", " lower section " and " below " can be with Be fisrt feature immediately below second feature or obliquely downward, or be merely representative of fisrt feature level height less than second feature.

In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show The description of example " or " some examples " etc. means to combine specific features, structure, material or the spy that the embodiment or example are described Point is contained at least one embodiment of the present utility model or example.In this manual, to the schematic table of above-mentioned term State and be necessarily directed to identical embodiment or example.Moreover, specific features, structure, material or the feature of description can be with Combined in an appropriate manner in any one or more embodiments or example.In addition, in the case of not conflicting, this area Technical staff the not be the same as Example or the feature of example and non-be the same as Example or example described in this specification can be entered Row is combined and combined.

While there has been shown and described that embodiment of the present utility model, it will be understood by those skilled in the art that： These embodiments can be carried out with a variety of changes, modification in the case where not departing from principle of the present utility model and objective, replaced And modification, scope of the present utility model limits by claim and its equivalent.

Claims (23)

1. a kind of electric cooker, it is characterised in that including：

Cooking cavity is limited in cooker body, the cooker body；

Pot lid, the pot lid can be opened and closed to be located in the cooker body to open or close the cooking cavity；

For the heater heated to the cooking cavity；

Detection means for detecting soup temperature in the cooking cavity and/or for detecting the culinary art cavity pressure；And

For making the pressure in the cooking cavity maintain rated pressure P_VolumeFollowing pressure relief device, the pressure relief device is configured to When the soup temperature that the detection means is detected in the cooking cavity is increased to bumping temperature T_BumpingAnd/or in the cooking cavity Pressure rise to bumping pressure P_BumpingWhen, the pressure relief device forces the cooking cavity to be vented at least more than twice, so that described Pressure in cooking cavity gradually reduces, so that soup bumping in the cooking cavity at least twice more than, wherein：T_Bumping≤T_Boiling, P_Bumping≤P_Volume, T_BoilingIt is the soup in the cooking cavity in the rated pressure P_VolumeWhen boiling temperature, P_Volume＞ 1atm.

2. electric cooker according to claim 1, it is characterised in that the pressure relief device is further configured to cook described in pressure Chamber of preparing food exhaust more than twice until the cooking cavity in pressure be reduced to it is equal with the environmental pressure outside the pot lid.

3. electric cooker according to claim 1, it is characterised in that the process that the pressure in the cooking cavity is gradually reduced In, the amplitude that a rear pressure declines is less than the amplitude that a preceding pressure declines.

4. electric cooker according to claim 1, it is characterised in that T_Bumping＜ T_Boiling, P_Bumping＜ P_Volume。

5. electric cooker according to claim 4, it is characterised in that the bumping temperature T_BumpingMeet relation：T_Boiling-5℃≤ T_Bumping≤T_Boiling-1℃。

6. electric cooker according to claim 4, it is characterised in that the bumping pressure P_BumpingMeet relation：P_Volume-0.2atm ≤P_Bumping≤P_Volume-0.05atm。

7. electric cooker according to claim 1, it is characterised in that T_Bumping=T_Boiling, P_Bumping=P_Volume。

8. electric cooker according to claim 1, it is characterised in that the pressure relief device is further configured to work as the detection The soup temperature that device is detected in the cooking cavity is increased to delivery temperature T_RowAnd/or the pressure rise in the cooking cavity is extremely Delivery temperature P_RowWhen force the cooking cavity to be vented, wherein, T_Row＜ T_Bumping, P_Row＜ P_Bumping。

9. electric cooker according to claim 8, it is characterised in that the delivery temperature T_RowMeet：T_Row=90 DEG C.

10. electric cooker according to claim 8, it is characterised in that the pressure at expulsion P_RowMeet：1.01atm≤P_Row≤ 1.1atm。

11. electric cooker according to claim 1, it is characterised in that the pressure relief device is further configured to force described After cooking cavity exhaust more than twice, the soup temperature in the cooking cavity is set to be increased to boiling temperature T_BoilingAnd tie up the soup Hold in the boiling temperature T_BoilingLower constantly boiling is to boiling dry.

12. electric cooker according to claim 1, it is characterised in that be formed with the pot lid outside the connection electric cooker Portion and the exhaust outlet of the cooking cavity, the pressure relief device include：Pressure limiting valve and pressure relief mechanism, the pressure relief mechanism are used to drive The exhaust outlet is opened or closed to the pressure limiting valve.

13. electric cooker according to claim 12, it is characterised in that there is cambered way, the exhaust in the pot lid Mouth runs through the bottom of the cambered way, and the pressure limiting valve is slidably disposed on the cambered way and often kept out in the row To close the exhaust outlet on gas port, the pressure relief mechanism be used to driving the pressure limiting valve along the cambered way upward sliding with Open the exhaust outlet.

14. electric cooker according to claim 13, it is characterised in that the pressure relief mechanism includes：

Electromagnet, the electromagnet includes horizontally movable iron core, and the electromagnet is configured to after the electromagnet is powered, The iron core moves to promote the pressure limiting valve along the cambered way upward sliding to open towards the direction of the pressure limiting valve The exhaust outlet；Or

Cam pack, the cam pack includes rotatable cam, and the cam pack is configured to the major axis when the cam When end promotes the pressure limiting valve pressure limiting valve along the cambered way upward sliding to open the exhaust outlet.

15. electric cooker according to claim 14, it is characterised in that the pressure relief device further comprises：It is located at described Reset linked component between pressure relief mechanism and pressure limiting valve, the reset linked component is configured to when the pressure relief mechanism is no longer pushed away When the dynamic pressure limiting valve opens the exhaust outlet, the direction away from the pressure limiting valve that is partially toward of the reset linked component is transported It is dynamic so that the pressure limiting valve is freely slid along the cambered way to close the exhaust outlet, and the reset linked component includes： The seal and moving part of elasticity, the seal are located between the pressure relief mechanism and the exhaust outlet with by the pressure release machine Structure is kept apart with the exhaust outlet, and the moving part can be linkedly connected between the pressure relief mechanism and the seal.

16. electric cooker according to claim 12, it is characterised in that the pressure relief mechanism is magnetic valve, the pressure release dress Put and be configured to when the magnetic valve is powered, the magnetic valve attracts the pressure limiting valve movement to open the exhaust outlet.

17. electric cooker according to claim 16, it is characterised in that the pressure limiting valve can be located at the row up or down The top of gas port, the magnetic valve is located at the top of the pressure limiting valve, and the pressure relief device is configured to when the magnetic valve is powered When, the magnetic valve attracts the pressure limiting valve to move up to open the exhaust outlet.

18. electric cooker according to claim 12, it is characterised in that the pressure limiting valve can be located at the row up or down The top of gas port, the pressure relief device further comprises：

Locating part；With

Linked component, the linked component is connected between the pressure relief mechanism and the pressure limiting valve and matched somebody with somebody with the locating part Close, the pressure relief device is configured to when the pressure relief mechanism promotes the linked component to be moved towards the direction of the pressure limiting valve When, the locating part drives the linked component to drive the pressure limiting valve synchronously to move down to close the exhaust outlet.

19. electric cooker according to claim 18, it is characterised in that the locating part is to be fixed on the linked component The gag lever post of side, the linked component includes：

Trace, the trace is connected between the pressure relief mechanism and the pressure limiting valve, and the trace can be let out by described Press mechanism driving is moved horizontally with relatively described pressure limiting valve；

Guide, the guide is fixed on the trace, on the guide have all the time with the gag lever post End coordinates the spigot surface slided,

The pressure relief device is configured to when the pressure relief mechanism drives the direction level of the trace towards the pressure limiting valve to move In dynamic process, spigot surface upward sliding described in the lower end edge of the gag lever post is to promote the guide, the gearing Bar and the pressure limiting valve move down to close the exhaust outlet.

20. electric cooker according to claim 18, it is characterised in that the pressure relief device further comprises：

Back-moving spring, the back-moving spring is located between the linked component and the pot lid, and the back-moving spring is configured to work as The linked component compression that the linked component is moved down when being moved towards the direction of the pressure limiting valve, the back-moving spring bullet The linked component and the pressure limiting valve is promoted to move up to open the exhaust outlet when rising.

21. the electric cooker according to any one of claim 18-20, it is characterised in that the pressure relief mechanism includes：Electromagnetism Iron, the electromagnet includes iron core that is horizontally moveable and being connected with the linked component, and the pressure relief device is configured to work as institute State after electromagnet energization, the iron core moves to drive the pressure limiting valve to close the exhaust towards the direction of the pressure limiting valve Mouthful.

22. electric cooker according to claim 12, it is characterised in that the pressure limiting valve can be located at the row up or down The top of gas port, the pressure relief mechanism includes：Cam pack, the cam pack includes rotatable cam, the cam set Part is configured to the pressure limiting valve when the longitudinal end of the cam promotes the pressure limiting valve and moved down to close the exhaust outlet.

23. electric cooker according to claim 22, it is characterised in that the pressure relief device further comprises：Back-moving spring, The back-moving spring is located between the pressure limiting valve and the pot lid, and the back-moving spring is configured to the longitudinal end when the cam Promote during the pressure limiting valve by the pressure limiting valve compression moved down, promote the pressure limiting valve to move up when the back-moving spring is upspring To open the exhaust outlet.