WO2018058384A1 - 电饭煲及其煮饭控制方法 - Google Patents

电饭煲及其煮饭控制方法 Download PDF

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Publication number
WO2018058384A1
WO2018058384A1 PCT/CN2016/100648 CN2016100648W WO2018058384A1 WO 2018058384 A1 WO2018058384 A1 WO 2018058384A1 CN 2016100648 W CN2016100648 W CN 2016100648W WO 2018058384 A1 WO2018058384 A1 WO 2018058384A1
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WIPO (PCT)
Prior art keywords
pressure
limiting valve
cooking chamber
pressure relief
exhaust port
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PCT/CN2016/100648
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English (en)
French (fr)
Inventor
黄韦铭
林毅
梁志佳
羊小亮
彭晶
Original Assignee
佛山市顺德区美的电热电器制造有限公司
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Application filed by 佛山市顺德区美的电热电器制造有限公司 filed Critical 佛山市顺德区美的电热电器制造有限公司
Priority to PCT/CN2016/100648 priority Critical patent/WO2018058384A1/zh
Publication of WO2018058384A1 publication Critical patent/WO2018058384A1/zh

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    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J27/00—Cooking-vessels
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J36/00—Parts, details or accessories of cooking-vessels
    • A47J36/38—Parts, details or accessories of cooking-vessels for withdrawing or condensing cooking vapors from cooking utensils

Definitions

  • the invention relates to the field of cooking equipment, and in particular to a rice cooker and a rice cooking control method thereof.
  • the surface of the rice grain begins to gelatinize and become sticky, and the rice grain and the rice grain will bond together to form a rice cluster, due to the rice
  • the heat conduction performance is far lower than the heat conduction performance of water, so that the agglomerated rice grains will hinder the heat transfer to the whole pot of rice evenly, so that the rice grains wrapped in the middle of the rice group may not be completely gelatinized because of the inability to absorb water.
  • the rice in the rice cooker is unevenly heated due to the upper and lower layers, so that the degree of gelatinization of the rice in different positions in the rice cooker is also inconsistent, which causes the rice in some places to be excessively gelatinized and deteriorated, and in some places, the rice is not completely eliminated.
  • Gelatinization leads to a great difference in the maturity of the whole pot of rice, which affects the taste of the rice.
  • the present invention aims to solve at least one of the technical problems existing in the prior art.
  • the present invention provides a rice cooker which can complete a plurality of sudden boiling after one pressing, thereby ending the sudden agitation step in a very short time, and effectively improving the cooking efficiency.
  • the present invention also provides a rice cooking control method for the above rice cooker.
  • a rice cooker comprising: a body defining a cooking chamber; a lid, the lid being openably closable on the body to open or close the cooking chamber; a heating device for heating the cooking chamber; a detecting device for detecting a temperature of the soup solution in the cooking chamber and/or for detecting a pressure in the cooking chamber; and for causing pressure in the cooking chamber pressure P is maintained at the rated amount or less of the pressure relief device, said pressure relief means is configured such that when said detecting means detects the temperature of the cooking chamber decoction was raised to a temperature T bumping bumping and / or the cooking cavity when the pressure rises to a pressure bumping bumping pressure P, the force of the pressure relief device has at least two exhaust gas cooking cavity, so the cooking chamber decreasing gradually, so that the cooking chamber decoction bumping at least twice or more, wherein: T ⁇ T boiling bumping, bumping ⁇ P amount of P, T is the boiling soup liquid in the cooking chamber said boiling temperature at the pressure P nominal
  • the rice cooker of the present invention it is possible to complete the sudden boiling after a single pressing, thereby ending the sudden agitation step in a very short period of time, and effectively improving the cooking efficiency.
  • the pressure relief device is further configured to force the cooking chamber to vent twice or more until the pressure within the cooking chamber is reduced to be equal to the ambient pressure outside the lid.
  • the magnitude of the latter pressure drop is smaller than the magnitude of the previous pressure drop.
  • T- bumping ⁇ T boiling P- bumping ⁇ P amount .
  • bumping the bumping temperature T satisfy the relationship: T bumping boiling -5 °C ⁇ T ⁇ T boiling -1 °C.
  • the pressure P bumping bumping satisfy the relationship: P bumping ⁇ P Amount Amount -0.2atm ⁇ P -0.05atm.
  • Tbump Tboiling
  • Pbumping P amount .
  • the pressure relief device is further configured to detect when the detection device detects that the temperature of the soup solution in the cooking chamber rises to a discharge temperature T row and/or a pressure rise in the cooking chamber high temperature exhaust gas to the forced P of the cooking cavity when the exhaust gas discharge, wherein, T rows ⁇ T bumping, row P ⁇ P bumping.
  • the discharge pressure P discharge satisfied: 1.01atm ⁇ P row ⁇ 1.1atm.
  • the pressure relief device is further configured to force the cooking chamber to ventilate twice or more, to raise the temperature of the soup solution in the cooking chamber to a boiling temperature T boiling and to make the soup liquid to maintain continuous boiling boil dry at the boiling temperature T under boiling.
  • the clamshell is formed with an exhaust port that communicates with the outside of the rice cooker and the cooking chamber
  • the pressure relief device includes: a pressure limiting valve and a pressure relief mechanism, and the pressure relief mechanism The pressure limiting valve is driven to open or close the exhaust port.
  • the flip cover has a curved slide
  • the exhaust port penetrates the bottom end of the curved slide
  • the pressure limiting valve is slidably disposed on the curved slide
  • the pressure relief mechanism is configured to drive the pressure limiting valve to slide upward along the curved slide to open the exhaust port.
  • the pressure relief mechanism includes: an electromagnet including a horizontally movable iron core, the electromagnet configured to, when the electromagnet is energized, the iron core faces the a direction movement of the pressure limiting valve to urge the pressure limiting valve to slide upward along the curved slide to open the exhaust port; or a cam assembly, the cam assembly including a rotatable cam, the cam assembly being configured The pressure limiting valve slides upward along the curved slide to open the exhaust port when the long shaft end of the cam pushes the pressure limiting valve.
  • the pressure relief device further includes: a reset linkage assembly disposed between the pressure relief mechanism and the pressure limiting valve, the reset linkage assembly being configured when the pressure relief mechanism is no longer When the pressure limiting valve is pushed to open the exhaust port, a portion of the reset linkage assembly moves toward a direction away from the pressure limiting valve, so that the pressure limiting valve is along The curved slide slides freely to close the exhaust port, and the reset linkage assembly comprises: an elastic seal and a linkage, the seal being disposed at the pressure relief mechanism and the exhaust port To isolate the pressure relief mechanism from the exhaust port, the linkage member is operatively coupled between the pressure relief mechanism and the seal.
  • the pressure relief mechanism is a magnetic valve
  • the pressure relief device is configured to attract the pressure limiting valve to move to open the exhaust port when the magnetic valve is energized.
  • the pressure limiting valve is vertically movable above the exhaust port
  • the magnetic valve is disposed above the pressure limiting valve
  • the pressure relief device is configured to be When the magnetic valve is energized, the magnetic valve attracts the pressure limiting valve to move upward to open the exhaust port.
  • the pressure limiting valve is vertically movably disposed above the exhaust port
  • the pressure relief device further includes: a limiting member; and a linkage assembly, the linkage assembly is coupled to The pressure relief mechanism and the pressure limiting valve cooperate with the limiting member, and the pressure releasing device is configured to move when the pressure releasing mechanism pushes the linkage assembly toward the pressure limiting valve
  • the limiting member drives the linkage assembly to drive the pressure limiting valve to move down synchronously to close the exhaust port.
  • the limiting member is a limiting rod fixed above the linkage assembly
  • the linkage assembly comprises: a linkage rod, the linkage rod is connected to the pressure relief mechanism and Between the pressure limiting valves, the linkage rod may be driven by the pressure relief mechanism to move horizontally relative to the pressure limiting valve; the guiding member, the guiding member is fixed on the linkage rod, the guiding member a guide surface having a sliding fit with the lower end of the limit rod, the pressure relief device being configured to move horizontally when the pressure release mechanism drives the linkage rod toward the pressure limiting valve The lower end of the limiting rod slides upward along the guiding surface to push the guide member, the linkage rod and the pressure limiting valve downward to close the exhaust port.
  • the pressure relief device further includes: a return spring disposed between the linkage assembly and the flip cover, the return spring configured to face the linkage assembly The direction of the pressure limiting valve is compressed by the linkage assembly that is moved downward, and when the return spring is popped up, the linkage assembly and the pressure limiting valve are pushed up to open the exhaust port.
  • the pressure relief mechanism includes: an electromagnet including an iron core horizontally movable and coupled to the linkage assembly, the pressure relief device configured to be energized when the electromagnet is energized Thereafter, the iron core moves toward the pressure limiting valve to drive the pressure limiting valve to close the exhaust port.
  • the pressure limiting valve is movably disposed above the exhaust port
  • the pressure relief mechanism includes: a cam assembly, the cam assembly including a rotatable cam, the cam assembly The pressure limiting valve is configured to move downward to close the exhaust port when the long shaft end of the cam pushes the pressure limiting valve.
  • the pressure relief device further includes: a return spring disposed between the pressure limiting valve and the flip cover, the return spring being configured to be a long axis of the cam When the end pushes the pressure limiting valve, the pressure limiting valve is moved downward, and when the return spring is bounced, the pressure limiting valve is pushed up to open the exhaust port.
  • a rice cooker control method for controlling the rice cooker cooking according to the first aspect of the present invention, comprising the steps of: S1, heating the soup liquid in the cooking chamber; S2; when said detecting means detects the temperature of the cooking chamber decoction was raised to bumping or the temperature T and pressure bumping / raised to the cooking chamber pressure P bumping bumping, forced by the pressure relief device of the cooking
  • the chamber is vented at least twice or more to gradually reduce the pressure in the cooking chamber to cause the soup solution in the cooking chamber to boil at least twice or more.
  • the rice cooking efficiency is high and the rice cooking effect is good.
  • 1 is a rice cooking control temperature and pressure curve of a rice cooker in accordance with some embodiments of the present invention
  • FIG. 2 is a schematic view of a pressure relief device according to a first embodiment of the present invention, in which the exhaust port is closed;
  • Figure 3 is a schematic view of a pressure relief device according to a first embodiment of the present invention, in which the exhaust port is opened;
  • Figure 4 is a schematic view of a pressure relief device according to a second embodiment of the present invention, in which the exhaust port is closed;
  • Figure 5 is a schematic view of a pressure relief device according to a second embodiment of the present invention, in which the exhaust port is opened;
  • Figure 6 is a schematic view of a pressure relief device according to a third embodiment of the present invention, in which the exhaust port is closed;
  • Figure 7 is a schematic view of a pressure relief device according to a third embodiment of the present invention, in which the exhaust port is opened;
  • Figure 8 is a schematic view of a pressure relief device according to a fourth embodiment of the present invention, in which the exhaust port is closed;
  • Figure 9 is a schematic view of a pressure relief device according to a fourth embodiment of the present invention, in which the exhaust port is opened;
  • Figure 10 is a schematic view of a pressure relief device according to a fifth embodiment of the present invention, in which the exhaust port is closed;
  • Figure 11 is a schematic view of a pressure relief device according to a fifth embodiment of the present invention, in which the exhaust port is opened;
  • Figure 12 is a schematic view of a pressure relief device according to a sixth embodiment of the present invention, in which the exhaust port is closed;
  • Figure 13 is a schematic view of a pressure relief device according to Embodiment 6 of the present invention, in which the exhaust port is opened;
  • Figure 14 is a schematic illustration of a flip cover in accordance with an embodiment of the present invention.
  • Figure 15 is a graph showing the cooking temperature and pressure of a rice cooker according to further embodiments of the present invention.
  • a rice cooker includes a cartridge (not shown), a lid 4, a heating device (not shown), a detecting device 2, and a pressure relief device 1.
  • a cooking chamber is defined in the crucible body, and a lid 4 is detachably provided on the crucible body to open or close the cooking chamber, and a heating device is used to heat the cooking chamber.
  • the body may include an inner body and an outer body, the inner body being disposed in the outer body, the outer body being supported outside the inner body, and the inner body defining cooking for containing the food.
  • the cavity, the lid 4 can be pivotally connected to the body by a hinge so that the lid 4 can freely rotate about the axis of the tip end of the body, and the heating device can be a heating plate or the like for converting electrical energy into heat energy.
  • the cooking chamber is heated.
  • the detecting device 2 is a temperature detecting device for detecting the temperature of the soup liquid in the cooking chamber and/or a pressure detecting device for detecting the pressure in the cooking chamber.
  • the temperature detecting device is used for directly or indirectly detecting the temperature of the soup liquid (for example, rice soup) in the cooking chamber.
  • the temperature detecting device may be installed in the lid 4 and at the top of the cooking chamber.
  • the gas layer communicates to detect the temperature of the vapor at the top of the cooking chamber, at which point the temperature of the soup solution in the cooking chamber can be indirectly detected by derivation.
  • the temperature value detected by the temperature detecting device can be added to the steam temperature. The difference between the degree and the temperature of the soup solution indirectly obtains the temperature of the soup solution in the cooking chamber.
  • a pressure relief device for the exhaust gas relief cooking cavity in particular, a pressure relief device for the cooking chamber pressure is maintained at the nominal amount of the pressure P (including the amount equal to the nominal pressure P), and That is, when the pressure within the cooking cavity pressure P exceeds the nominal amount, the pressure within the cooking cavity (e.g., vapor pressure) can drive an automatic pressure relief vent pressure relief device 1, to ensure that the pressure within the cooking cavity is always equal to the rated pressure of less than P amount . 1, when the pressure within the cooking cavity reaches the rated pressure P amount (e.g. 1.3atm shown in FIG. 1), the cooking cavity decoction pressure P at the rated amount of boiling at the boiling temperature T (e.g., FIG.
  • the rated pressure P is greater than one standard atmospheric pressure, ie, the P amount is >1 atm.
  • the present invention is not limited thereto, and the rice cooker according to the embodiment of the present invention can also be applied to other special environments, for example, it can also be applied to a plateau, and the rated pressure P is greater than the ambient air pressure on the plateau.
  • a pressure relief device is configured to: when the soup liquid temperature detecting means detects the cooking chamber 2 is raised to a temperature T bumping bumping (T ⁇ T bumping boiling), and / or, if the pressure was raised to the cooking chamber when bumping bumping pressure P (P bumping ⁇ P amount), a pressure relief device to force the exhaust gas has at least two cooking cavity, so the cooking chamber pressure decreasing gradually, so that the cooking The soup in the cavity is boiled at least twice.
  • the temperature of the soup liquid in the cooking cavity is higher than the boiling point corresponding to the air pressure after the current pressure reduction, so that the soup liquid can suddenly boil, and the effect of stirring and churning is generated to break up.
  • the agglomerated rice mass in the cooking cavity promotes the uniformity of water absorption and the uniformity of heating.
  • the pressure relief device 1 forces the cooking chamber to be vented at least twice, so that the pressure in the cooking chamber is successively lowered, so that the soup in the cooking chamber is boiled at least twice or more".
  • the cooking chamber when the pressure was raised to bumping bumping pressure P 1 e.g. 1.2atm shown in FIG. 1
  • a pressure relief device to vent the cooking cavity to force the first relief (i.e., the first relief force), so that the pressure within the cooking cavity by bumping down to P 1 P, soup liquid temperature at this time is higher than the boiling point of the cooking chamber at a pressure P 1, whereby a soup liquid may boil suddenly (i.e., the occurrence of Once suddenly boiled).
  • a pressure relief device be vented once again forced cooking cavity (i.e., the second relief force), so that the pressure within the cooking cavity is decreased from P 1 to P 2, soup liquid temperature of the cooking chamber at this time although it decreased However, it is higher than the boiling point under the pressure of P 2 , so that the soup can suddenly boil again (that is, a second sudden boiling occurs).
  • the pressure relief device 1 can force the cooking chamber to perform more exhaust pressure relief (for example, four more exhaust pressure reliefs as shown in FIG. 1) to make the pressure in the cooking chamber once and once. Gradually decrease (for example, four times as shown in Figure 1, that is, from P2 first to P3, from P3 to P4, from P4 to P5, from P5 to P6), and the soup is once, Boiling once (for example, the liquid is shown to be boiled four times as shown in Figure 1).
  • more exhaust pressure relief for example, four more exhaust pressure reliefs as shown in FIG. 1
  • Gradually decrease for example, four times as shown in Figure 1, that is, from P2 first to P3, from P3 to P4, from P4 to P5, from P5 to P6), and the soup is once, Boiling once (for example, the liquid is shown to be boiled four times as shown in Figure 1).
  • time from pressure means that when the pressure within the cooking cavity reaches a bumping the bumping pressure P, at least twice during the forced wastegate During the process, the pressure in the cooking chamber has not risen in a small stage, but is gradually reduced), in order to more effectively produce the effect of stirring and churning, to break up the agglomerated rice mass in the cooking cavity, to promote the uniformity and heating of the rice water absorption. Uniformity.
  • the magnitude of the latter pressure drop is less than the magnitude of the previous pressure drop (eg, in the example shown in FIG. 1, the first drop is decreased from P1 to P2, second)
  • the magnitude of the decrease, P5-P6 ⁇ P4-P5; the magnitude of the fourth pressure drop is less than the amplitude of the third pressure drop, P4-P5 ⁇ P3-P4, and the magnitude of the third pressure drop is less than the second pressure drop.
  • the amplitude, P3-P4 ⁇ P2-P3, the magnitude of the second pressure drop is less than the magnitude of the first pressure drop, P2-P3 ⁇ P1-P2).
  • the front boiling point is larger and more vigorous, and the rice is effectively stirred by the large boiling water, but at the same time, the rice is unevenly distributed and uneven, so that the small boiling water can be repaired later by the small boiling point.
  • the defect that is, the small bump in the back is just corrected, so that the rice is evenly distributed, which is more conducive to the uniform heating of the rice.
  • the greater the magnitude of the pressure drop the more the sudden boiling effect, and the more intense the tumbling of the soup.
  • the pressure relief device 1 can force the cooking chamber to exhaust the pressure every time.
  • the shrinkage is short, so that the time consumption of the entire inrush phase S4 can be effectively shortened while achieving the desired effect.
  • the sudden boiling temperature T- bumping can satisfy the relationship: T boiling - 5 ° C ⁇ T sudden boiling ⁇ T boiling - 1 ° C; sudden boiling temperature P sudden boiling can satisfy the relationship: P amount - 0.2 atm ⁇ P sudden boiling ⁇ P amount -0.05atm.
  • T- bump T- boiling
  • P- bumping P amount , that is, in the detecting device 2 detecting the inside of the cooking cavity when the soup liquid temperature was raised to the boiling temperature T is equal to boiling, and / or, when the pressure within the cooking cavity is increased to a pressure P equal to the nominal amount, a forced pressure relief device has at least two exhaust gas cooking cavity, so that the The pressure in the cooking chamber is successively lowered to cause the soup solution in the cooking chamber to boil at least twice. Thereby, it is possible to ensure that the bumping effect is reliably achieved.
  • the pressure relief device 1 is further configured to force the cooking chamber to vent twice more until cooking The pressure in the chamber is equal to the ambient pressure outside the lid. That is to say, the cut-off time for forcing the exhaust gas to cause the boiling of the soup in the cooking chamber is given, that is, when the pressures inside and outside the cooking chamber are equally balanced, the forced exhaust pressure is no longer performed. Thereby, the sudden agitation stirring effect can be obtained to the greatest extent, avoiding unnecessary waste, and improving cooking efficiency in disguise.
  • the pressures inside and outside the cooking chamber are equally balanced, even if the cooking chamber is opened, there is no exhaust pressure relief.
  • the pressure relief device 1 may be configured to stop the forced discharge when the pressure in the cooking chamber is not lowered to be equal to the ambient pressure outside the lid. Pressing, thus, it is only necessary to limit the number of forced pressure release when setting the program, thereby simplifying the control and detection difficulty, reducing the cost, and improving the control reliability.
  • the pressure relief device 1 is further configured to force the cooking chamber to exhaust gas after at least two times (ie, after the end of the boiling phase S4), and thereafter, the pressure relief device can raise the temperature of the soup liquid in the cooking chamber. Up to the boiling temperature T boiling and maintaining the soup at boiling temperature T boiling and boiling until it is boiled. That is to say, after the completion of the sudden boiling phase S4, the soup liquid continues to boil at the temperature of the T boiling , in other words, the soup liquid at this stage is no longer boiled. Therefore, since the surface of the rice grains has been gelatinized after the boiling, the later soup will be less and less, and if it is further boiled, the distribution of the rice in the cooking cavity will be uneven, resulting in uneven hardness of the rice, and finally cooking.
  • the rice will also become uneven and affect the taste. Further, after the rice after bumping boiling continued at high temperatures T boiling, the rice will be more easily formed uniformly distributed "grotto", so that the bottom of the cooking cavity by heat "grotto" upload upper rice, thereby The upper and lower layers of the rice are uniformly heated, in other words, if the boiling continues, the distribution of the cavities is likely to be uneven, thereby further causing the rice to be soft and hard.
  • the rice cooker may further include a control device 3, which may include a single chip microcomputer, a related circuit hardware circuit, a signal receiving and control circuit, etc., and the control device 3 may process the real-time signal of the detecting device 2 through a program.
  • the output of the pressure relief device 1 is controlled to achieve control of the exhaust state of the cooking chamber.
  • the boiling stage of the rice cooking can be controlled by the pressure relief device 1, and the pressure releasing device 1 and the detecting device 2 can realize the sudden boiling stage before the boiling stage, that is, through a pressure releasing device 1
  • the realization of the boiling process and the boiling process make the rice cooker simple in structure, easy to process, and low in production cost.
  • the rice in the cooking cavity can be effectively dispersed in the sudden boiling stage, and the uniformity of water absorption and the heating efficiency of the rice are improved. So that each grain can be well hydrated, improve the consistency and uniformity of rice gelatinization, and optimize the taste of rice.
  • the pressure relief device 1 is further configured when the detecting means detects the temperature of the decoction of the cooking chamber 2 is raised to the exhaust gas temperature T and the exhaust or pressure / discharge was raised to the cooking chamber
  • the gas temperature P is exhausted
  • the temperature of the soup in the cooking chamber gradually increases, and the solubility of the gas in the soup gradually decreases with the increase of temperature, and the gas precipitated from the soup gradually increases.
  • the air pressure in the cooking chamber is gradually increased, because the cooking chamber and the outside world are substantially not convected, and the gas in the soup liquid and the cooking chamber is only thermally conducted by the air layer, and the heat transfer rate is very slow, thereby causing air close to the surface of the soup liquid.
  • the temperature difference between the layer and the air layer away from the surface of the soup liquid is large, and after the temperature of the soup liquid rises above 90 ° C, the cold air in the cooking chamber is quickly discharged to the outside of the rice cooker by controlling the pressure relief device 1 , thereby The air temperature in the cooking chamber is evenly distributed, which improves cooking efficiency and improves the discoloration of rice caused by the presence of cold air.
  • a temperature sensing device can be mounted on the lid 4 and in communication with gas within the cooking chamber to detect the temperature of the gas at the top of the cooking chamber, such as in the example of FIG. 14, the temperature sensing device is mounted on the lid 4, And the upper end of the temperature detecting device is embedded in the flip cover 4, and the lower end of the temperature detecting device passes down the lid 4 and contacts the gas at the top of the cooking chamber to directly detect the temperature of the gas in the cooking chamber, thereby indirectly obtaining the liquid in the cooking chamber.
  • the temperature for example, can be indirectly detected by derivation of the temperature of the soup solution in the cooking chamber.
  • the temperature difference ⁇ T can be raised to 10 ° C ⁇ 25 ° C due to the large temperature difference between the air layer close to the surface of the soup and the air layer away from the surface of the soup, at this time, when the detecting device 2 detects
  • the temperature of the gas in the cooking chamber rises to 90 ° C - ⁇ T
  • the temperature of the soup liquid in the cooking chamber is raised to the exhaust gas temperature of 90 ° C, at which time the cooling air operation can be performed.
  • the temperature of the air in the cooking chamber is evenly distributed, and the temperature of the gas detected by the detecting device 2 can be considered to be equal to the temperature of the soup in the cooking chamber.
  • a pressure relief device 1 in some embodiments of the present invention, as shown in FIG. 14, includes a pressure limiting valve 11 and a pressure relief mechanism 12, and the cover 4 is formed with a communication cover 4 externally and cooked.
  • the exhaust port 40 of the chamber, the pressure relief mechanism 12 is used to drive the pressure limiting valve 11 to open or close the exhaust port 40.
  • the exhaust pressure relief operation can be controlled by controlling the pressure relief mechanism 12, thereby facilitating handling and control, and facilitating implementation and installation.
  • the present invention is not limited thereto, and the pressure relief bumping process and the pressure relief exhaust gas process of the rice cooker can also be controlled by other means (for example, by manual means).
  • the exhaust port 40 is an outlet for forcibly opening to discharge high-pressure steam in the cooking chamber, and the pressure in the cooking chamber is lowered to below the preset rated pressure of the pressure limiting valve 11 by rapid exhausting.
  • the pressure relief mechanism 12 is driven by the control device 3, and controls the pressure limiting valve 11 to realize a driving mechanism for opening or closing the exhaust port 40.
  • the pressure limiting valve 11 is used for connecting or blocking the air outside the cooking chamber and the rice cooker, and is limited.
  • the pressure limiting valve 11 in a closed state of the exhaust port 40 , when the pressure within the cooking cavity 11 is higher than the preset pressure limiting valve pressure P nominal amount, the pressure within the cooking cavity of the pressure limiting valve 11 may be opened automatically in a state open the exhaust port 40 to automatically discharge such steam The air pressure in the cooking chamber is restored to the rated pressure P amount .
  • the pressure limiting valve 11 may be a rigid ball 111 of mass m (or sealing stop 112), and the ball 111 (or sealing member 112) is covered by a row having a cross-sectional area S.
  • the pressure in the cooking chamber is defined by the ratio of the self-weight of the ball 111 (or the sealing member 112) itself and the cross-sectional area of the exhaust port 40.
  • a pressure relief device 1 according to various embodiments of the present invention will now be described with reference to Figs.
  • the pressure limiting valve 11 is a ball 111 having a curved slide 421 on the cover 4, the exhaust port 40 penetrating the bottom end of the curved slide 421, and the ball 111 is slidably disposed in the arc
  • the chute 421 is often placed against the exhaust port 40 to close the exhaust port 40, and the pressure relief mechanism 12 can push the ball 111 to slide up along the curved chute 421 to open the exhaust port 40.
  • the flip cover 4 may include an outer cover and a cover plate 41.
  • the cover plate 41 is disposed at the bottom of the outer cover, and the pressure relief device 1 may be disposed between the outer cover and the cover 41, and the center of the cover 41 may be There is a through hole through which the support block 42 can be mounted, and the curved slide 421 is formed by the upper surface of the support block 42 being recessed downward.
  • the exhaust port 40 can penetrate the support block 42 in the up and down direction and pass through the curved shape.
  • the lowermost end of the slide 421 communicates a space above the cooking chamber and the cover plate 41 and communicates with the outside of the rice cooker.
  • the ball 111 is rollably disposed on the curved slide 421.
  • the ball 111 can always stop at the curved slide 421 under the action of gravity.
  • the bottom end blocks the exhaust port 40 (as shown in FIG. 2), so that the cooking chamber and the rice cooker are externally blocked, and when the ball 111 receives the thrust from the substantially horizontal direction, the ball 111 can slide upward along the curved slide 421.
  • the exhaust port 40 (as shown in FIG. 3)
  • the cooking cavity is connected to the outside of the rice cooker.
  • the thrust acting on the ball 111 is removed, the ball 111 can fall back to the curved shape under the action of gravity.
  • the bottom end of the track 421 again blocks and closes the exhaust port 40 (as shown in Figure 2). Repeatedly, the opening and closing of the exhaust port 40 can be achieved.
  • the pressure relief mechanism 12 includes an electromagnet 123 and a linkage 121.
  • the electromagnet 123 includes a horizontally movable iron core 1231.
  • the linkage member 121 is disposed on the iron core 1231 and the sphere 111.
  • the pressure relief device 1 is configured such that when the electromagnet 123 is energized, the iron core 1231 moves toward the direction of the sphere 111 (for example, the right side shown in FIG. 2) to indirectly push the sphere through the linkage 121.
  • 111 slides upward along the curved chute 421 to open the exhaust port 40 (as shown in FIG. 3).
  • the sliding cover 43 can be defined on the flip cover 4, and the linking member 121 can be horizontally slidably disposed.
  • the left end of the linking member 121 is fixedly connected with the iron core 1231, and the right end of the linking member 121 interacts with the ball 111.
  • the iron core 1231 pushes the linking member 121 to the right to The ball 111 is pushed to the upper right to open the exhaust port 40.
  • the electromagnet 123 is de-energized, the iron core 1231 releases the thrust to the ball 111, and the ball 111 can slide down by the action of gravity to close the exhaust port 40. Therefore, the pressure relief device 1 of the first embodiment has a simple structure and is easy to implement and control.
  • the electromagnet 123 may include a coil and a core 1231, and the coil may be wound around the iron core 1231. Together with the iron core 1231, the core 1231 can be translationally fitted in the magnetic cavity. After the coil is energized (ie, the electromagnet 123 is energized), the iron core 1231 can generate a magnetic field opposite to the magnetic cavity, so as to face away from the magnetic cavity (for example, FIG. 2 In the right side shown in the translation, when the coil is de-energized, the magnetic field disappears and the iron core 1231 can stop moving.
  • the pressure relief device 1 may further include: a reset linkage assembly disposed between the pressure relief mechanism 12 and the pressure limiting valve 11, the reset linkage assembly being configured to open the pressure limiting valve 11 when the pressure relief mechanism 12 is no longer pushed At the time of the port 40, the reset interlocking assembly moves toward the direction away from the pressure limiting valve 11, so that the pressure limiting valve 11 is free to slide along the curved chute 421 to close the exhaust port 40.
  • the reset linkage assembly may include: an elastic seal 122 and the linkage 121 described above, and the seal 122 is disposed between the pressure relief mechanism 12 and the exhaust port 40 to displace the pressure relief mechanism 12 and the row
  • the air port 40 is isolated to prevent the steam discharged from the exhaust port 40 from interfering with the normal operation of the pressure relief mechanism 12, and the linkage member 121 is operatively coupled between the pressure relief mechanism 12 and the seal member 122, that is,
  • the pressure relief mechanism 12 can be moved by the linkage to drive the seal 122, and the seal 122 can also be driven by the linkage to drive the pressure relief mechanism 12.
  • the sealing member 122 is attached to the right end of the linking member 121, and when the iron core 1231 does not push the linking member 121, the sealing member 122 is in a natural shape and the central portion 1221 is retracted away from the spherical body 111.
  • the linking member 121 pushes the middle portion 1221 of the sealing member 122 to protrude toward the spherical body 111 (as shown in FIG. 3), so that The deformation of the sealing member 122 has an elastic potential energy.
  • the linking member 121 no longer pushes the middle portion 1221 of the sealing member 122 to the right, and the central portion 1221 of the sealing member 122 can be restored to the original shape by the elastic force.
  • the direction of the ball 111 is again retracted, thereby pushing the linkage 121 and the iron core 1231 to the left.
  • the present invention is not limited thereto, and the leftward withdrawal of the interlocking lever 113 can also be realized by providing a return spring at one end in the longitudinal direction of the linking member 121, which will not be described in detail herein.
  • the structure of the embodiment is substantially the same as that of the first embodiment, wherein the same components are given the same reference numerals, except that the cam assembly is used in the second embodiment instead of the first embodiment.
  • the cam assembly can be a motor 124 with a cam 1242.
  • the pressure relief mechanism 12 includes a motor 124 and a cam 1242.
  • the motor 124 has an output shaft 1241.
  • the cam 1242 is mounted on the output shaft 1241 to be driven to rotate by the motor 124.
  • the linkage 121 is disposed at Between the cam 1242 and the ball 111, during the rotation of the motor 124 driving the cam 1242, the outer peripheral surface of the cam 1242 can be rotated in the left-right direction by pushing the right end surface of the linking member 121, when the cam 1242 is rotated to the same When the outer peripheral surface of the long-axis end is in contact with the linking member 121 (as shown in FIG.
  • the linking member 121 moves toward the direction of the ball 111 to push the ball 111 to slide upward along the curved chute 421 to open the exhaust port 40.
  • the cam 1242 is rotated until the outer peripheral surface of the short-axis end thereof comes into contact with the linking member 121 (as shown in FIG. 4), the linking member 121 is no longer subjected to the thrust to the right, thereby releasing the thrust to the ball 111, and the ball 111 can be in gravity. The effect slides down to close the exhaust port 40. Therefore, the pressure relief device 1 of the second embodiment has a simple structure and is easy to implement and control.
  • the opening and closing operation of the pressure limiting valve 11 can be quietly controlled, so that the user does not have working noise during the cooking of the rice cooker, thereby improving the rice cooker.
  • the comfort of use makes the rice cooker more suitable for home use.
  • the structure of the embodiment is substantially the same as that of the first embodiment, wherein the same components are denoted by the same reference numerals, and the difference includes: in the third embodiment, the magnetic valve 125 is used instead of the first embodiment.
  • the electromagnet 123 is in the middle, and the moving direction of the sphere 111 is a vertical direction.
  • the ball 111 is vertically movable above the exhaust port 40, and the pressure relief mechanism 12 is a magnetic valve 125.
  • the pressure relief device 1 is configured such that when the magnetic valve 125 is energized, the magnetic valve 125 attracts the ball 111 to move upward to open Exhaust port 40.
  • a magnetic valve 125 may be disposed above the ball 111.
  • the magnetic valve 125 may generate a magnetic force to attract the ball 111 of the metal material to move upward, thereby opening the exhaust port 40.
  • the magnetic valve 125 is powered off, the magnetic force is applied.
  • the disappearance of the magnetic force of the valve 125 no longer attracts the ball 111, and the ball 111 can fall under the action of gravity to close the exhaust port 40.
  • the present invention is not limited thereto, and the spherical body 111 may not be made of a metal material. In this case, it is only necessary to provide a magnetic material member that can be attracted to the spherical body 111.
  • the magnetic valve 125 may include a coil 1251 and a magnetic material member 1252, and the coil 1251 is wound around the magnetic material member 1252.
  • the magnetic material member 1252 can be magnetized to have magnetism to attract the ball 111.
  • the magnetic properties of the magnetic material member 1252 can disappear and the sphere 111 is no longer attracted.
  • the exhaust port 40 is preferably processed relatively large, and at the same time, the sphere 111 The weight is also preferably heavier, so that a better bumping effect is easily achieved.
  • the exhaust port 40 is processed relatively large, and the sphere 111 is used If the processing is relatively heavy, the cover 4 will be thicker, and the use of the electromagnet 123 or the magnetic valve 125 to open the ball 111 requires a large power.
  • the pressure limiting valve 11 of the following three embodiments does not have the above problem, the exhaust port 40 does not need to be processed relatively large, the cover 4 does not need to be processed thick, and only a small power limiting valve 11 is required.
  • the exhaust port 40 can be opened, and the problem of jamming is less likely to occur during operation, and the rice cooker can be reliably ensured to work reliably.
  • the present embodiment is substantially the same as the structure of the first embodiment, in which the same components are given the same reference numerals.
  • the pressure limiting valve 11 is a sealing member 112, and the sealing member 112 is vertically movable above the exhaust port 40.
  • the pressure relief device 1 further includes: a limiting member and a linkage assembly, and the linkage assembly is connected Between the pressure relief mechanism 12 and the pressure limiting valve 11 and with the limiting member, the pressure relief device 1 is configured to drive the linkage assembly when the pressure relief mechanism 12 moves the linkage assembly toward the pressure limiting valve 11 The pressure limiting valve 11 is driven to move down synchronously to close the exhaust port 40.
  • the limiting member is a limiting rod 116 fixed above the linkage assembly, and the linkage assembly comprises: a linkage rod 113 and a guiding member 115.
  • the linkage rod 113 is connected between the pressure releasing mechanism 12 and the pressure limiting valve 11, and is linked
  • the rod 113 is driven by the pressure relief mechanism 12 to move horizontally relative to the pressure limiting valve 11, and the guiding member 115 is fixed on the linking rod 113.
  • the guiding member 115 has a guiding surface that always slides with the lower end of the limiting rod 116, and the pressure releasing device 1 is configured such that when the pressure relief mechanism 12 drives the interlocking rod 113 to move horizontally toward the pressure limiting valve 11, the lower end of the limiting rod 116 slides along the guiding surface to push the guiding member 115, the linking rod 113 and the pressure limiting The valve 11 is moved down to close the exhaust port 40.
  • the sealing member 112 extends in the up and down direction and can move up and down above the exhaust port 40, and the linkage rod 113 can extend substantially in the horizontal direction, and the left end of the linkage rod 113 can Fixedly connected with the iron core 1231, the right end of the linkage rod 113 passes rightward through the sealing member 112 and is horizontally movable relative to the sealing member 112, and the sealing member can be driven during the movement of the linkage rod 113 up and down 112 is synchronously moved in the up and down direction, and the guide member 115 is fixedly mounted on the upper end surface of the right end of the interlocking lever 113, so that the guide member 115, the drive interlocking lever 113, and the seal stopper 112 can be synchronously moved in the up and down direction.
  • the guide surface extends obliquely downward from left to right, and the limit lever 116 is suspended and mounted on the flip cover 4 and always above the guide surface, the limit lever 116 The lower end abuts against the guide surface, whereby when the iron core 1231 pushes the interlocking lever 113 toward the direction of the pressure limiting valve 11 (for example, the right side shown in FIG. 8), since the position of the limiting lever 116 is fixed, The lower end of the limiting rod 116 can slide upward along the guiding surface to push the guiding member 115 to move the sealing member 112 and the linkage rod 113 downward to close the exhaust port 40 (as shown in FIG. 8).
  • the exhaust port 40 may directly penetrate the cover plate 41 in the up and down direction, and the top of the cover plate 41 may be provided with a mounting member 44, the upper end of the sealing member 112 passing through the mounting member 44, and passing through the mounting member
  • the guiding role of 44 can Moving up and down, the lower end of the sealing member 112 has a gasket 114.
  • the gasket 114 can seal the outer circumference of the exhaust port 40 for better sealing.
  • the pressure limiting valve 11 further includes a return spring 119 provided between the interlocking lever 113 and the cover 4, and the return spring 119 is configured to be moved when the interlocking lever 113 moves in the direction of the pressure limiting valve 11. Compression, when the interlocking lever 113 moves toward the direction away from the pressure limiting valve 11, the interlocking lever 113 is bounced to move the sealing member 112 upward to open the exhaust port 40.
  • a return spring 119 provided between the interlocking lever 113 and the cover 4, and the return spring 119 is configured to be moved when the interlocking lever 113 moves in the direction of the pressure limiting valve 11. Compression, when the interlocking lever 113 moves toward the direction away from the pressure limiting valve 11, the interlocking lever 113 is bounced to move the sealing member 112 upward to open the exhaust port 40.
  • the return spring 119 is retractable in the up and down direction, and the upper and lower ends of the return spring 119 are respectively abutted against the lower end surface of the interlocking lever 113 and the upper end surface of the mounting member 44, when iron
  • the linkage rod 113 is pushed down to compress the return spring 119, and when the iron core 1231 is no longer applied to the linkage rod 113
  • the limiting rod 116 no longer has a pushing force that slides upward along the guiding surface, so that the linking rod 113 is no longer pressed against the downward compression spring 119, and at this time, the return spring 119 can restore the shape to Upwardly, the sealing member 112 is caused to pop up to open the exhaust port 40, and at the same time, the limiting rod 116 slides along the guiding surface, and the linkage rod 113 pushes the iron core 1231 to slide to the left.
  • the pressure relief device 1 in the present embodiment is in a normally open state (ie, the electromagnet 123 is often in an energized state), so that the pressure limiting valve 11
  • the exhaust port 40 is normally closed, and when the exhaust pressure is required, the pressure relief device 1 is turned off (ie, the electromagnet 123 is deenergized) so that the pressure limiting valve 11 opens the exhaust port.
  • the pressure relief device 1 is in a normally closed state, the pressure limiting valve 11 often closes the exhaust port 40, and when the exhaust pressure is required to be released, the pressure relief device 1 is activated. So that the pressure limiting valve 11 opens the exhaust port 40.
  • the present embodiment is substantially the same as the structure of the fourth embodiment, wherein the same components are given the same reference numerals.
  • the pressure limiting valve 11 is vertically movable above the exhaust port 40.
  • the pressure relief mechanism 12 includes a cam assembly including a rotatable cam 1242 configured to be pushed when the long axis end of the cam 1242 is pushed. When the pressure limiting valve 11 is depressed, the pressure limiting valve 11 is moved downward to close the exhaust port 40.
  • the pressure relief mechanism 12 includes a motor 124 (e.g., a stepper motor) and a cam 1242 having an output shaft 1241 mounted on the output shaft 1241 for driving rotation by the motor 124, cam 1242 The outer peripheral surface directly or indirectly abuts against the sealing member 112. For example, in the example of FIG.
  • the upper end of the sealing member 112 may be fixed with a horizontally disposed stepped baffle 117, and the outer end surface of the cam 1242 is abutted against the baffle The upper end surface of the 117 is indirectly stopped against the sealing member 112.
  • the motor 124 drives the cam 1242 to rotate
  • the sealing member 112 is The baffle 117 is moved downward to close the exhaust port 40 (as shown in FIG. 10).
  • the sealing member 112 is no longer pushed down. Thereby the vent 40 can be opened (as shown in Figure 11).
  • the pressure limiting valve 11 may further include: a return spring 119 disposed between the sealing member 112 and the cover 4, for example, in the example of FIG. 11, the return spring 119 is expandable in the up and down direction and is reset The upper and lower ends of the spring 119 are respectively abutted against the lower end surface of the shutter 117 and the upper end surface of the mounting member 44, and the return spring 119 is configured to be compressed when the long-axis outer peripheral surface of the cam 1242 is stopped against the sealing member 112 ( As shown in FIG. 10, when the short-axis outer peripheral surface of the cam 1242 is pressed against the seal member 112, the stopper 112 is sealed to open the exhaust port 40 (as shown in FIG. 11).
  • the present invention is not limited thereto, and the resetting action of the sealing member 112 can also be achieved by other means.
  • the structure of the present embodiment is substantially the same as that of the fourth embodiment, wherein the same components are given the same reference numerals, and the difference includes: using the magnetic valve 125 instead of the electromagnet 123 in the fourth embodiment. .
  • the sealing member 112 is vertically disposed above the exhaust port 40, and the pressure relief mechanism 12 is a magnetic valve 125.
  • the pressure relief device 1 is configured to attract the sealing member 112 when the magnetic valve 125 is energized. Move up to open the vent 40. 12 and 13, the magnetic valve 125 may be disposed above the sealing member 112, the sealing member 112 may be a metal material member or a metal material member may be fixed at the upper end of the sealing member 112 (for example, as described in FIG. The metal piece 118), the magnetic valve 125 can generate a magnetic force to attract the sealing member 112 having the metal piece 118 to move upward, thereby opening the exhaust port 40. When the magnetic valve 125 is de-energized, the magnetic force of the magnetic valve 125 disappears and no longer attracts the sphere. 111, the ball 111 can fall under the action of gravity to close the exhaust port 40.
  • FIG. 1 A rice cooking control method of a rice cooker according to an embodiment of the present invention will be described below with reference to FIG. 1.
  • the horizontal axis shown in FIG. 1 represents time
  • the vertical axis on the left side represents the bottom temperature of the cooking chamber
  • the vertical axis on the right side represents the cooking cavity.
  • the pressure, temperature curve T represents the change in temperature of the bottom of the cooking chamber with time
  • the pressure curve P represents the change in pressure in the cooking chamber with time.
  • the bottom of the cooking chamber may be provided with a heating device for heating the bottom of the cooking chamber and a temperature sensor for detecting the temperature of the bottom of the cooking chamber (the temperature curve T shown in FIG. 1 is measured by the temperature sensor)
  • a preheating stage S1 a water absorption stage S2, a heating stage S3, a sudden boiling stage S4, a boiling stage S5, and a risotto stage S6.
  • a heat retention phase S7 after the end of the risotto phase S6, there may be a heat retention phase S7.
  • the invention is not limited thereto, and the heating device may not be provided at the bottom of the cooking chamber.
  • the first stage preheating stage S1
  • the cooking chamber can be heated by the heating means, so that the temperature of the cooking rice is increased from room temperature to the cavity temperature T absorbent suction, alternatively, 40 °C ⁇ T absorbing ⁇ 60 °C.
  • the main function of the preheating stage S1 is to raise the temperature of the rice soup to the optimum temperature range suitable for water absorption of the rice grains by rapid heating.
  • Second stage water absorption stage S2
  • a heating means for heating may be performed by low-power, so that the temperature of the cooking rice suction chamber is maintained at T, the long t 1, preferably, 5min ⁇ t 1 ⁇ 30min for a period of time.
  • the water absorption stage allows the rice grains to sufficiently absorb water so that the moisture content of the rice is ensured to rise to a level of 20% to 28% after the end of the water absorption stage.
  • the temperature of the rice soup is kept at the optimum temperature for the water absorption of the rice.
  • the purpose of the suction is that the temperature of the rice soup is too low, which will cause the water absorption speed of the rice to decrease, resulting in too long a water absorption time. If the temperature is too high, the surface of the rice will be gelatinized during the water absorption stage. Sticky, prematurely forming agglomerated rice clusters, hindering the water absorption of the rice grains in the center of the rice cluster.
  • the third stage heating stage S3
  • the power can be heated by the heating means so that the temperature of the cooking rice is sucked from the cavity T rapid increase to a predetermined temperature T migration bumping bumping.
  • rice will continue to absorb water and swelling on the one hand.
  • the surface layer of rice will begin to gelatinize and become sticky, which will cause the rice grains to stick together to form rice clusters.
  • the rice grains in the middle of the rice cluster will be because The problem of a decrease in water absorption speed or difficulty in water absorption occurs due to the surrounding rice group.
  • the water temperature in the pot body becomes higher and higher, and the gas solubility in the water gradually decreases as the temperature increases, so that the originally dissolved gas in the water gradually precipitates as bubbles.
  • the form is floated and discharged into a closed cavity other than the rice soup in the cooking chamber. Since the gas cannot circulate in the closed cavity and substantially no convection occurs, on the one hand, the air pressure in the closed cavity rises to be greater than The external atmospheric pressure is strong. On the other hand, because the heated rice water in the closed cavity and the closed air cavity are only thermally conductive by the air layer, the heat transfer rate is very slow, which will cause the cooking cavity to be away from the rice soup surface.
  • the air temperature produces a relatively large temperature difference ⁇ T with the air temperature close to the surface of the rice soup.
  • the difference in ⁇ T varies depending on the structural space of the product or the amount of cooked rice.
  • the general difference is 10 ° C to 25 ° C, resulting in
  • the gas temperature of the cooking chamber detected by the detecting device 2 in the lid 4 is largely different from the actual temperature of the rice soup.
  • a cooling air step S31 can be added in the heating stage, that is, by forcibly opening the exhaust port 40, the cold air in the cooking chamber is discharged to the outside of the cooking chamber, and on the other hand, the gas in the cooking chamber is away from the surface of the rice soup.
  • the temperature is closer to the temperature of the gas near the surface of the rice soup, so that the temperature of the gas detected by the detecting device 2 is closer to the temperature of the rice soup, and on the other hand, the problem of discoloration of the rice caused by the presence of the cold air can be reduced after the cold air is discharged.
  • the heating stage S3 when the rice soup temperature is raised above 90 ° C, when the gas temperature value T detected by the detecting device 2 for detecting the gas temperature satisfies: T ⁇ 90 ° C - ⁇ T, by controlling the pressure releasing device 1
  • the exhaust port 40 is opened and maintained for a certain period of time t2, wherein the length t2 of the exhaust air discharged from the exhaust port 40 can be specifically set according to the volume of the cooking chamber and the amount of rice.
  • t2 satisfies: 1s ⁇ t2 ⁇ 30s
  • the detecting device 2 can directly detect the temperature of the soup solution, when the detecting device 2 detects the soup
  • the liquid temperature T' when T' ⁇ 90 ° C, the exhaust port 40 is directly opened by controlling the pressure relief device 1 and held for a certain period of time t2.
  • the fourth stage the sudden boiling stage S4
  • a sudden agitation stirring step S4 is inserted, and the sudden pressure release changes, so that the rice soup in the cooking chamber has a boiling effect to stir the rice to perform the tumbling motion to break up the agglomeration.
  • Rice balls promote the uniformity of water absorption and heating of whole pot rice.
  • a pressure relief device has at least two (each The length of time can be set according to actual requirements) to open the exhaust port 40 at least twice or more, so that the pressure in the cooking chamber is successively lowered, and finally can be lowered to a standard atmospheric pressure state (for example, a standard atmospheric pressure of 1 atm), that is, Through a number of forced pressure reliefs for a short period of time, the pressure in the cooking chamber is successively lowered, and finally to the normal pressure state, so that the rice soup in the cooking chamber can be higher than the current pressure relief during each pressure relief process.
  • a standard atmospheric pressure state for example, a standard atmospheric pressure of 1 atm
  • the boiling temperature under pressure suddenly violently boils, and the effect of stirring and tumbling is generated.
  • the impact force is generated by the sudden boiling force, and the rice grains are stirred and stirred to break up the agglomerated rice mass caused by the gelatinization of the surface of the rice grains during the heating stage, and promote the whole rice. Water absorption consistency and heating uniformity.
  • the bumping temperature T bumping may be pressed to close restrictor valve rated pressure P scale state 11 the boiling temperature T boiling corresponding to the temperature, e.g., preferably, T bumping satisfied: T boil -5 °C ⁇ T bumping ⁇ T boiling - 1 °C, at this time, when the soup liquid temperature detecting means detects the cooking chamber 2 is raised to near boiling boiling temperature T, can start multiple bumping after the first boosting operation, wherein, by boiling the boiling temperature T The influence of the air pressure in the cooking chamber, the boiling temperature T boiling is different under different pressure conditions, the specific correspondence is shown in Table 1.
  • Air pressure value P / (a standard atmospheric pressure atm)
  • Boiling temperature T / (degree Celsius ° 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
  • the heating stage S3 includes the exhaust air step S31
  • the exhaust port 40 is again set to the closed state, and the air pressure in the cooking chamber is restored to the standard atmospheric pressure state.
  • the temperature of the rice soup rises to 100 ° C
  • the water in the rice soup will boil for a short time, causing a large amount of water vapor to enter the closed cavity of the cooking chamber containing the gas, so that the cavity is sealed.
  • pressure increased rapidly the water in the pot will increase as the pressure has returned to the state does not boil
  • the detecting means 2 detects the rice cooking chamber when the temperature rises to T bumping, bumping stirring step starts again.
  • the temperature of the gas detected above the rice soup by the detecting device 2 can be approximately equal to the temperature of the rice soup due to the temperature of the gas above the rice soup.
  • the fifth stage the boiling stage S5
  • the sixth stage risotto stage S6
  • the heating cooker may be a relatively low power, without heating or cooking cavity directly e.g.
  • the heat storage continues to replenish the rice with heat, which further promotes the gelatinization of the rice and enhances the taste of the rice.
  • the difference between low-power heating and high-power heating is that the heating speed is different.
  • low-power heating can be understood as reaching a certain temperature at a slower speed
  • high-power heating can be understood as a faster speed. The above temperature is reached.
  • the plurality of continuous sudden boiling agitation of the rice soup is realized by a plurality of consecutive sudden pressure relief, so that the agglomerated rice mass can be effectively broken up, and the heating uniformity and paste of the rice can be improved. Consistency, improve the taste of rice and the cooking efficiency of rice.
  • the terms “installation”, “connected”, “connected”, “fixed” and the like shall be understood broadly, and may be either a fixed connection or a detachable connection, unless explicitly stated and defined otherwise. Or integrated; can be directly connected, or indirectly connected through an intermediate medium, which can be the internal communication of two elements or the interaction of two elements.
  • an intermediate medium which can be the internal communication of two elements or the interaction of two elements.
  • the first feature "on” or “under” the second feature may be a direct contact of the first and second features, or the first and second features may be indirectly through an intermediate medium, unless otherwise explicitly stated and defined. contact.
  • the first feature "above”, “above” and “above” the second feature may be that the first feature is directly above or above the second feature, or only It is only indicated that the first feature level is higher than the second feature.
  • the first feature “below”, “below” and “below” the second feature may be that the first feature is directly below or obliquely below the second feature, or merely that the first feature level is less than the second feature.

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Abstract

一种电饭煲及其煮饭控制方法，电饭煲包括：煲体、煲盖(4)、加热装置、检测装置(2)以及泄压装置(1)，泄压装置(1)用于使烹饪腔内的压力维持在额定压力P 额以下，泄压装置(1)构造成当检测装置(2)检测到烹饪腔内的汤液温度升高至突沸温度T 突沸和/或烹饪腔内的压力升高至突沸压力P 突沸时，泄压装置(1)强制烹饪腔排气至少两次以上、以使烹饪腔内的压力逐次降低、以使烹饪腔内的汤液突沸至少两次以上，其中：T 突沸≤T 沸，P 突沸≤P 额，T 沸为烹饪腔内的汤液在额定压力P 额时的沸腾温度。

Description

电饭煲及其煮饭控制方法 技术领域
本发明涉及烹饪设备领域，尤其是涉及一种电饭煲及其煮饭控制方法。
背景技术
相关技术中指出，电饭煲在煮饭的过程中，随着浸泡时间的推移和水温的上升，米粒的表面开始糊化变粘，米粒与米粒之间会粘合在一起形成米团，由于大米的热传导性能远低于水的热传导性能，从而结团的米粒会阻碍热量向整锅米饭均匀传递，致使包裹在米团中间的米粒因为无法吸水而发生无法完全糊化的夹生问题。而且，位于电饭煲内的米饭由于上下层受热不均匀，从而位于煲内不同位置的大米糊化程度也不一致，从而致使有的地方的米饭已经过度糊化变烂，而有的地方米饭还未彻底糊化，导致整锅米饭成熟的均匀性差异很大，影响米饭的口感。
发明内容
本发明旨在至少解决现有技术中存在的技术问题之一。为此，本发明在于提出一种电饭煲，所述电饭煲可以在一次起压后完成多次突沸，从而在极短的时间内结束突沸搅拌工序，有效地提高了烹饪效率。
本发明还提出一种上述电饭煲的煮饭控制方法。
根据本发明第一方面的电饭煲，包括：煲体，所述煲体内限定出烹饪腔；煲盖，所述煲盖可开合地设在所述煲体上以打开或者关闭所述烹饪腔；用于对所述烹饪腔加热的加热装置；用于检测所述烹饪腔内汤液温度和/或用于检测所述烹饪腔内压力的检测装置；以及用于使所述烹饪腔内的压力维持在额定压力P额以下的泄压装置，所述泄压装置构造成当所述检测装置检测到所述烹饪腔内的汤液温度升高至突沸温度T突沸和/或所述烹饪腔内的压力升高至突沸压力P突沸时，所述泄压装置强制所述烹饪腔排气至少两次以上、以使所述烹饪腔内的压力逐次降低、以使所述烹饪腔内的汤液突沸至少两次以上，其中：T突沸≤T沸，P突沸≤P额，T沸为所述烹饪腔内的汤液在所述额定压力P额时的沸腾温度。
根据本发明的电饭煲，可以在一次起压后完成多次突沸，从而在极短的时间内结束突沸搅拌工序，有效地提高了烹饪效率。
根据本发明的一个示例，所述泄压装置进一步构造成强制所述烹饪腔排气两次以上直至所述烹饪腔内的压力降低至与所述煲盖外的环境压力相等。
根据本发明的一个示例，所述烹饪腔内的压力逐次降低的过程中，后一次压力下降的幅度小于前一次压力下降的幅度。
根据本发明的一个示例，T突沸＜T沸，P突沸＜P额。
根据本发明的一个示例，所述突沸温度T突沸满足关系：T沸-5℃≤T突沸≤T沸-1℃。
根据本发明的一个示例，所述突沸压力P突沸满足关系：P额-0.2atm≤P突沸≤P额-0.05atm。
根据本发明的一个示例，T突沸＝T沸，P突沸＝P额。
根据本发明的一个示例，所述泄压装置进一步构造成当所述检测装置检测到所述烹饪腔内的汤液温度升高至排气温度T排和/或所述烹饪腔内的压力升高至排气温度P排时强制所述烹饪腔排气，其中，T排＜T突沸，P排＜P突沸。
根据本发明的一个示例，所述排气温度T排满足：T排＝90℃。
根据本发明的一个示例，所述排气压力P排满足：1.01atm≤P排≤1.1atm。
根据本发明的一个示例，所述泄压装置进一步构造成强制所述烹饪腔排气两次以上之后，使所述烹饪腔内的汤液温度升高至沸腾温度T沸且使所述汤液维持在所述沸腾温度T沸下持续沸腾至煮干。
根据本发明的一个示例，所述煲盖上形成有连通所述电饭煲外部与所述烹饪腔的排气口，所述泄压装置包括：限压阀和泄压机构，所述泄压机构用于驱使所述限压阀打开或者关闭所述排气口。
根据本发明的一个示例，所述煲盖上具有弧形滑道，所述排气口贯穿所述弧形滑道的底端，所述限压阀可滑动地设在所述弧形滑道上且常抵挡在所述排气口上以关闭所述排气口，所述泄压机构用于驱使所述限压阀沿所述弧形滑道向上滑动以打开所述排气口。
根据本发明的一个示例，所述泄压机构包括：电磁铁，所述电磁铁包括可水平移动的铁芯，所述电磁铁构造成当所述电磁铁通电后，所述铁芯朝向所述限压阀的方向运动以推动所述限压阀沿所述弧形滑道向上滑动以打开所述排气口；或凸轮组件，所述凸轮组件包括可转动的凸轮，所述凸轮组件构造成当所述凸轮的长轴端推动所述限压阀时所述限压阀沿所述弧形滑道向上滑动以打开所述排气口。
根据本发明的一个示例，所述泄压装置进一步包括：设在所述泄压机构与限压阀之间的复位连动组件，所述复位连动组件构造成当所述泄压机构不再推动所述限压阀打开所述排气口时，所述复位连动组件的部分朝向远离所述限压阀的方向运动，使得所述限压阀沿所 述弧形滑道自由滑落以关闭所述排气口，所述复位连动组件包括：弹性的密封件和连动件，所述密封件设在所述泄压机构与所述排气口之间以将所述泄压机构与所述排气口隔离开，所述连动件可连动地连接在所述泄压机构和所述密封件之间。
根据本发明的一个示例，所述泄压机构为磁力阀，所述泄压装置构造成当所述磁力阀通电时，所述磁力阀吸引所述限压阀移动以打开所述排气口。
根据本发明的一个示例，所述限压阀可上下移动地设在所述排气口的上方，所述磁力阀设在所述限压阀的上方，所述泄压装置构造成当所述磁力阀通电时，所述磁力阀吸引所述限压阀向上移动以打开所述排气口。
根据本发明的一个示例，所述限压阀可上下移动地设在所述排气口的上方，所述泄压装置进一步包括：限位件；和连动组件，所述连动组件连接在所述泄压机构与所述限压阀之间且与所述限位件配合，所述泄压装置构造成当所述泄压机构推动所述连动组件朝向所述限压阀的方向移动时，所述限位件驱使所述连动组件带动所述限压阀同步下移以关闭所述排气口。
根据本发明的一个示例，所述限位件为固定在所述连动组件上方的限位杆，所述连动组件包括：连动杆，所述连动杆连接在所述泄压机构与所述限压阀之间，所述连动杆可由所述泄压机构驱动以相对所述限压阀水平移动；导向件，所述导向件固定在所述连动杆上，所述导向件上具有始终与所述限位杆的下端配合滑动的导向面，所述泄压装置构造成当所述泄压机构驱动所述连动杆朝向所述限压阀的方向水平移动的过程中，所述限位杆的所述下端沿所述导向面向上滑动以推动所述导向件、所述连动杆和所述限压阀下移以关闭所述排气口。
根据本发明的一个示例，所述泄压装置进一步包括：复位弹簧，所述复位弹簧设在所述连动组件与所述煲盖之间，所述复位弹簧构造成当所述连动组件朝向所述限压阀的方向移动时被下移的所述连动组件压缩，所述复位弹簧弹起时推动所述连动组件和所述限压阀上移以打开所述排气口。
根据本发明的一个示例，所述泄压机构包括：电磁铁，所述电磁铁包括可水平移动且与所述连动组件相连的铁芯，所述泄压装置构造成当所述电磁铁通电后，所述铁芯朝向所述限压阀的方向运动以驱动所述限压阀关闭所述排气口。
根据本发明的一个示例，所述限压阀可上下移动地设在所述排气口的上方，所述泄压机构包括：凸轮组件，所述凸轮组件包括可转动的凸轮，所述凸轮组件构造成当所述凸轮的长轴端推动所述限压阀时所述限压阀下移以关闭所述排气口。
根据本发明的一个示例，所述泄压装置进一步包括：复位弹簧，所述复位弹簧设在所述限压阀与所述煲盖之间，所述复位弹簧构造成当所述凸轮的长轴端推动所述限压阀时由下移的所述限压阀压缩，当所述复位弹簧弹起时推动所述限压阀上移以打开所述排气口。
根据本发明第二方面的电饭煲的煮饭控制方法，用于控制根据本发明第一方面的电饭煲煮饭，包括以下步骤：S1、对所述烹饪腔内的汤液进行加热；S2、当所述检测装置检测到所述烹饪腔内的汤液温度升高至突沸温度T突沸和/或所述烹饪腔内的压力升高至突沸压力P突沸时，通过所述泄压装置强制所述烹饪腔排气至少两次以上、以使所述烹饪腔内的压力逐次降低、以使所述烹饪腔内的汤液突沸至少两次以上。
根据本发明的电饭煲的煮饭控制方法，煮饭效率高，煮饭效果好。
本发明的附加方面和优点将在下面的描述中部分给出，部分将从下面的描述中变得明显，或通过本发明的实践了解到。
附图说明
图1是根据本发明一些实施例的电饭煲的煮饭控制温度和压力曲线；
图2是根据本发明实施例一的泄压装置的示意图，图中排气口被关闭；
图3是根据本发明实施例一的泄压装置的示意图，图中排气口被打开；
图4是根据本发明实施例二的泄压装置的示意图，图中排气口被关闭；
图5是根据本发明实施例二的泄压装置的示意图，图中排气口被打开；
图6是根据本发明实施例三的泄压装置的示意图，图中排气口被关闭；
图7是根据本发明实施例三的泄压装置的示意图，图中排气口被打开；
图8是根据本发明实施例四的泄压装置的示意图，图中排气口被关闭；
图9是根据本发明实施例四的泄压装置的示意图，图中排气口被打开；
图10是根据本发明实施例五的泄压装置的示意图，图中排气口被关闭；
图11是根据本发明实施例五的泄压装置的示意图，图中排气口被打开；
图12是根据本发明实施例六的泄压装置的示意图，图中排气口被关闭；
图13是根据本发明实施例六的泄压装置的示意图，图中排气口被打开；
图14是根据本发明实施例的煲盖的示意图；
图15是根据本发明另一些实施例的电饭煲的煮饭控制温度和压力曲线。
附图标记：
1：泄压装置；11：限压阀；111：球体；112：密封挡件；113：连动杆；114：密封垫； 115：导向件；116：限位杆；117：挡板；118：金属片；119：复位弹簧；12：泄压机构；121：连动件；122：密封件；1221：中部；123：电磁铁；1231：铁芯；124：电机；1241：输出轴；1242：凸轮；125：磁力阀；1251：线圈；1252：磁性材料件；2：检测装置；3：控制装置；4：煲盖；40：排气口；41：盖板；42：支撑块；421：弧形滑道；43：滑移通道；44：安装件；S1：预热阶段；S2：吸水阶段；S3：加热阶段；S31：排冷气工序；S4：突沸阶段；S5：沸腾阶段；S6：焖饭阶段；S7：保温阶段。
具体实施方式
下面详细描述本发明的实施例，所述实施例的示例在附图中示出，其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施例是示例性的，旨在用于解释本发明，而不能理解为对本发明的限制。
下文的公开提供了许多不同的实施例或例子用来实现本发明的不同结构。为了简化本发明的公开，下文中对特定例子的部件和设置进行描述。当然，它们仅仅为示例，并且目的不在于限制本发明。此外，本发明可以在不同例子中重复参考数字和/或字母。这种重复是为了简化和清楚的目的，其本身不指示所讨论各种实施例和/或设置之间的关系。此外，本发明提供了的各种特定的工艺和材料的例子，但是本领域普通技术人员可以意识到其他工艺的可应用于性和/或其他材料的使用。
下面参考附图描述根据本发明实施例的电饭煲。
如图14所示，根据本发明实施例的电饭煲，包括：煲体(图未示出)、煲盖4、加热装置(图未示出)、检测装置2、以及泄压装置1。
参照图14，煲体内限定出烹饪腔，煲盖4可开合地设在煲体上以打开或者关闭烹饪腔，加热装置用于对烹饪腔加热。例如在本发明的一个具体示例中，煲体可以包括内煲体和外煲体，内煲体设在外煲体内，外煲体支撑在内煲体外，内煲体限定出用于容纳食材的烹饪腔，煲盖4可以通过铰链与煲体可枢转地相连，以使煲盖4可以绕煲体顶端尾部的轴线自由转动，加热装置可以为加热盘等，以用于将电能转化为热能对烹饪腔进行加热。
参照图14，检测装置2为用于检测烹饪腔内汤液温度的温度检测装置和/或用于检测烹饪腔内压力的压力检测装置。这里，需要说明的是，温度检测装置用于直接或者间接检测烹饪腔内的汤液(例如米汤)的温度，为了便于安装，温度检测装置可以安装在煲盖4内且与烹饪腔内顶部的气体层连通以检测烹饪腔内顶部的蒸汽温度，此时，可以通过推导的方法间接检测烹饪腔内的汤液温度。例如，可以将温度检测装置检测的温度值加上蒸汽温 度与汤液温度的差值来间接获得烹饪腔内的汤液温度。
参照图14，泄压装置1用于使烹饪腔排气泄压，具体地，泄压装置1用于使烹饪腔内的压力维持在额定压力P额以下(包括等于额定压力P额)，也就是说，当烹饪腔内的压力超过额定压力P额时，烹饪腔内的压力(例如蒸汽压力)可以驱使泄压装置1自动排气泄压，从而确保烹饪腔内的压力始终小于等于额定压力P额。如图1所示，当烹饪腔内的压力达到额定压力P额(例如图1中所示的1.3atm)时，烹饪腔内的汤液在额定压力P额下以沸腾温度T沸(例如图1中所示的105℃)沸腾。优选地，当电饭煲用于常规环境下使用时，额定压力P额大于一个标准大气压，即P额＞1atm。当然，本发明不限于此，根据本发明实施例的电饭煲还可以应用在其他特殊环境下，例如还可以应用在高原上，此时，额定压力P额大于高原上的环境气压。
参照图1，根据本发明实施例的泄压装置1构造成：当检测装置2检测到烹饪腔内的汤液温度升高至突沸温度T突沸(T突沸≤T沸)，和/或，当烹饪腔内的压力升高至突沸压力P突沸(P突沸≤P额)时，泄压装置1强制烹饪腔排气至少两次以上、以使所述烹饪腔内的压力逐次降低、以使烹饪腔内的汤液突沸至少两次以上。其中，每次强制排气泄压后，烹饪腔内的汤液的温度都高于当前降压后的气压所对应的沸点，以使汤液可以突然沸腾，产生搅拌翻腾的效果，以打散烹饪腔内结块的米团，促进米饭吸水的均匀性和加热的均匀性。
下面，更加具体地解释：“泄压装置1强制烹饪腔排气至少两次以上、以使所述烹饪腔内的压力逐次降低、以使烹饪腔内的汤液突沸至少两次以上”的含义。
如图1所示，当烹饪腔内的压力升高至突沸压力P突沸(例如图1中所示的1.2atm)时，泄压装置1强制烹饪腔先排气泄压一次(即第一次强制泄压)，以使烹饪腔内的压力由P突沸下降至P1，此时烹饪腔内的汤液温度高于在P1压力下的沸点，从而汤液可以突然沸腾一次(即发生第一次突沸)。
然后，泄压装置1强制烹饪腔再排气一次(即第二次强制泄压)，以使烹饪腔内的压力由P1下降至P2，此时烹饪腔内的汤液温度虽然下降但是却高于在P2压力下的沸点，从而汤液可以再次突然沸腾(即发生第二次突沸)。
依此类推，泄压装置1可以强制烹饪腔进行更多次的排气泄压(例如图1中所示的再进行四次排气泄压)、以使烹饪腔内的压力一次、一次地逐渐下降(例如图1中所示的再下降四次，即从P2先下降至P3、从P3先下降至P4、从P4先下降至P5、从P5先下降至P6)、使汤液一次、一次地沸腾(例如图1中所示的使液体在突沸四次)。
由此，可以实现一次起压后的多次突沸效果(其中，“一次起压”指的是，当烹饪腔内 的压力达到突沸压力P突沸后，在进行至少两次强制排气泄压的过程中，烹饪腔内的压力一直没有升高的小阶段，只是逐次降低)，以更加有效地产生搅拌翻腾的效果，打散烹饪腔内结块的米团，促进米饭吸水的均匀性和加热的均匀性。
优选地，烹饪腔内的压力逐次降低的过程中，后一次压力下降的幅度小于前一次压力下降的幅度(例如在图1所示的示例中，第一次下降由P1下降至P2，第二次下降由P2下降至P3，第三次下降由P3下降至P4，第四次下降由P4下降至P5；第五次下降由P5下降至P6；第五次压力下降的幅度小于第四次压力下降的幅度，P5-P6＜P4-P5；第四次压力下降的幅度小于第三次压力下降的幅度，P4-P5＜P3-P4，第三次压力下降的幅度小于第二次压力下降的幅度，P3-P4＜P2-P3，第二次压力下降的幅度小于第一次压力下降的幅度，P2-P3＜P1-P2)。
由此，通过前面突沸幅度较大、较猛，采用大突沸对米饭进行有效搅拌，但同时会使米饭分布不平整、不均匀，因此，在后面通过小突沸就可以修补前面大突沸所带来的缺陷，即后面的小突沸刚好做了修正，使得米饭分布平整，这样更有利于米饭的均匀受热。这里，本领域技术人员可以理解的是，压力下降的幅度越大，突沸效果越猛，汤液翻滚越剧烈。
基于上述论述，由于泄压装置1强制烹饪腔排气多次的过程中，烹饪腔内的压力是逐次降低的，因此，泄压装置1强制烹饪腔每次排气泄压的耗时都可以缩到很短，从而使得整个突沸阶段S4的耗时可以有效缩短，同时能够达到预期的效果。由此，通过在短时间内实现一次起压后的多次突沸效果，从而可以更高效率地提高米饭的烹煮效果。
在本发明的一些优选实施例中，如图1所示，T突沸＜T沸，P突沸＜P额，也就是说，在检测装置2检测到烹饪腔内的汤液温度升高至接近沸腾温度T沸，和/或，当烹饪腔内的压力升高至接近额定压力P额时，泄压装置1强制烹饪腔排气至少两次以上、以使所述烹饪腔内的压力逐次降低、以使烹饪腔内的汤液突沸至少两次以上。由此，可以确保突沸效果可靠实现。例如在图1所示的示例中，突沸温度T突沸可以满足关系：T沸-5℃≤T突沸≤T沸-1℃；突沸温度P突沸可以满足关系：P额-0.2atm≤P突沸≤P额-0.05atm。
当然，本发明不限于此，在本发明的另一些实施例中，如图15所示，T突沸＝T沸，P突沸＝P额，也就是说，在检测装置2检测到烹饪腔内的汤液温度升高至等于沸腾温度T沸，和/或，当烹饪腔内的压力升高至等于额定压力P额时，泄压装置1强制烹饪腔排气至少两次以上、以使所述烹饪腔内的压力逐次降低、以使烹饪腔内的汤液突沸至少两次以上。由此，可以确保突沸效果可靠实现。
在本发明的一些实施例中，泄压装置1进一步构造成强制烹饪腔排气两次以上直至烹饪 腔内的压力与煲盖外的环境压力相等。也就是说，这里给出了强制排气以使烹饪腔内汤液突沸的截止时间，即当烹饪腔内、外压力相等平衡时，则不再进行强制排气泄压。由此，可以最大程度地获得突沸搅拌效果，避免造成不必要的浪费，变相提高烹饪效率。这里，需要说明的是，当烹饪腔内、外压力相等平衡时，即使将烹饪腔打开，也不会排气泄压。
当然，本发明不限于此，在本发明的其他实施例中，泄压装置1还可以构造成当烹饪腔内的压力未下降至与煲盖外的环境压力相等时，就停止强制排气泄压，由此，在设定程序时，只需限定强制泄压次数即可，从而可以简化控制和检测难度，降低成本，提高控制可靠性。
泄压装置1进一步构造成强制烹饪腔排气至少两次以后(即突沸阶段S4结束后)就不再强制烹饪腔排气泄压，此后，泄压装置可以使烹饪腔内的汤液温度升高至沸腾温度T沸且使汤液维持在沸腾温度T沸下持续沸腾至煮干。也就是说，突沸阶段S4完成后，汤液是在T沸的温度下持续沸腾的，换言之，此阶段的汤液就不再进行突沸了。由此，因为突沸后米粒的表面基本已经糊化，后期的汤液会越来越少，如果再突沸，会使米饭在烹饪腔内的分布不均匀，造成米饭的软硬不均，最终煮出的米饭也会变得不平整，影响口感。另外，经过突沸后的米饭在T沸的高温环境下持续沸腾，会使米饭更容易地形成均匀分布的“穴洞”，使烹饪腔底部的热量通过“穴洞”上传到米饭的上层，从而实现米饭的上下层均匀加热，换言之，如果继续突沸，很可能造成穴洞的分布不均，从而进一步地致使米饭软硬不均。
另外，参照图14，电饭煲还可以包括控制装置3，控制装置3可以包括单片机、相关电路硬件回路、信号接收和控制回路等，控制装置3可以通过采集上述检测装置2的实时信号，经过程序处理运算输出对泄压装置1的控制，以实现对烹饪腔排气状态的控制。
根据本发明实施例的电饭煲，通过泄压装置1可以控制煮饭的沸腾阶段，通过泄压装置1和检测装置2可以在沸腾阶段之前实现突沸阶段，也就是说，通过一个泄压装置1可以兼顾实现突沸工序和沸腾工序，从而使得电饭煲的结构简单，便于加工，生产成本低，另外，在突沸阶段可以有效地打散烹饪腔内结团的米饭，改善了米饭吸水的均匀性和受热效率，使得每粒米都可以很好地吸水糊化，提高了米饭糊化的一致性与均匀性，优化了米饭的口感。
在本发明的一个实施例中，泄压装置1进一步构造成当检测装置2检测到烹饪腔内的汤液的温度升高至排气温度T排和/或烹饪腔内的压力升高至排气温度P排时，使烹饪腔排气至少一次以排出烹饪腔内的冷空气(如图1中S31阶段所示)，其中，T排＜T突沸，P排＜P突沸，可选地，T排＝90℃，1.01atm≤P排≤1.1atm。也就是说，在煮饭过程中的突沸阶段之前可以 设置排冷气阶段。这样，电饭煲在煮饭初期，随着加热过程的持续，烹饪腔内的汤液温度逐渐升高，汤液中气体的溶解度随温度的升高逐步降低，从汤液中析出的气体逐渐增多，致使烹饪腔内的气压逐渐升高，由于烹饪腔与外界基本不发生对流，且汤液与烹饪腔内的气体仅靠空气层进行热传导、传热速度非常慢，从而造成贴近汤液表面的空气层与远离汤液表面的空气层之间的温差较大，当汤液的温度升高至90℃以上之后，通过控制泄压装置1将烹饪腔内的冷空气迅速排出到电饭煲外部，从而使得烹饪腔内的空气温度均匀分布，提高烹饪效率，改善冷空气存在造成的米饭变色问题。
为了便于安装，温度检测装置可以安装在煲盖4上且与烹饪腔内的气体连通以检测烹饪腔内顶部的气体温度，例如在图14的示例中，温度检测装置安装在煲盖4上，且温度检测装置的上端嵌入在煲盖4内，温度检测装置的下端向下穿出煲盖4且与烹饪腔顶部的气体接触以直接检测烹饪腔内的气体温度，进而间接得到烹饪腔内液体温度，例如，可以通过推导的方法间接检测烹饪腔内的汤液温度。
这样，在进行排冷气阶段之前，由于贴近汤液表面的空气层与远离汤液表面的空气层的温差较大，温差ΔT可升高至10℃～25℃，此时，当检测装置2检测到烹饪腔内的气体温度升高至90℃-ΔT时，可以认为烹饪腔内的汤液温度升高至排气温度90℃，此时可以进行排冷气动作。另外，需要说明的是，当排冷气阶段结束之后，烹饪腔内的空气温度均匀分布，检测装置2检测的气体温度可以认为等于烹饪腔内的汤液温度。
在本发明的一些实施例中，如图14所示，根据本发明实施例的泄压装置1包括：限压阀11和泄压机构12，煲盖4上形成有连通煲盖4外部与烹饪腔的排气口40，泄压机构12用于驱使限压阀11打开或者关闭排气口40。由此，通过控制泄压机构12就可以控制排气泄压工作，从而方便操控和控制，且便于实现和安装。当然，本发明不限于此，还可以通过其他方式(例如通过手动的方式)控制电饭煲的泄压突沸过程和泄压排冷气过程。
具体而言，排气口40是用于强制性打开以使得烹饪腔内的高压蒸汽排出的出口，通过快速排汽使得烹饪腔内的压力降低到低于限压阀11预设的额定压力P额，泄压机构12是由控制装置3驱动，控制限压阀11实现打开或关闭排气口40动作的驱动机构，限压阀11用于连通或者阻断烹饪腔与电饭煲外界的空气，限定烹饪腔在起压后的压力固定在预设的额定压力P额，当烹饪腔的压力低于限压阀11预设的额定压力P额时，限压阀11处于关闭排气口40的状态，当烹饪腔内的压力高于限压阀11预设的额定压力P额时，烹饪腔内的压力可以将限压阀11自动打开，处于打开排气口40的状态，以自动排放蒸汽使得烹饪腔内的气压重新恢复到额定压力P额。
在本发明的一些实施例中，限压阀11可以为一个质量为m的刚性球体111(或密封挡件112)，球体111(或密封挡件112)盖设在横截面积为S的排气口40上，依靠球体111(或密封挡件112)本身的自重以及排气口40的横截面积的比值来限定烹饪腔内的压力，此时，限压阀11预设的额定压力P额为，P额＝mg/S，优选地，额定压力P额满足：1.1atm≤P额≤1.4atm。但是，当烹饪腔内的压力低于限压阀11预设的额定压力P额时，虽然限压阀11不能被烹饪腔内的压力自动打开，但是可以通过控制泄压机构12来机械地打开限压阀11。
下面将参考图2-图13描述根据本发明多个具体实施例的泄压装置1。
实施例一，
如图2和图3所示，限压阀11为球体111，煲盖4上具有弧形滑道421，排气口40贯穿弧形滑道421的底端，球体111可滑动地设在弧形滑道421上且常抵挡在排气口40上以关闭排气口40，泄压机构12可推动球体111沿弧形滑道421向上滑动以打开排气口40。如图2所示，煲盖4可以包括外盖和盖板41，盖板41设在外盖的底部，泄压装置1可以设在外盖与盖板41之间，盖板41上的中心处可以具有贯通的安装孔，安装孔处可以安装支撑块42，弧形滑道421由支撑块42的上表面向下凹入形成，排气口40可以沿上下方向贯穿支撑块42且穿过弧形滑道421的最下端，以连通烹饪腔与盖板41上方的且与电饭煲外部连通的空间。
进一步地，参照图2和图3，球体111可滚动地设在弧形滑道421上，当球体111不受其他外力时，球体111可以在重力的作用下始终停在弧形滑道421的底端以堵住排气口40(如图2所示)，使得烹饪腔与电饭煲外部阻断，当球体111受到来自大体水平方向的推力时，球体111可以沿着弧形滑道421向上滑动以将排气口40打开(如图3所示)，使得烹饪腔与电饭煲外部连通，当撤去作用在球体111上的推力时，球体111可以在重力的作用下，重新落回到弧形滑道421的底端以再次堵住、关闭排气口40(如图2所示)。如此反复，可以实现排气口40的打开和关闭。
进一步地，参照图2和图3，泄压机构12包括：电磁铁123和连动件121，电磁铁123包括可水平移动的铁芯1231，连动件121设在铁芯1231与球体111之间且与铁芯1231相连，泄压装置1构造成当电磁铁123通电后，铁芯1231朝向球体111的方向(例如图2中所示的右方)运动以通过连动件121间接推动球体111沿弧形滑道421向上滑动以打开排气口40(如图3所示)，当电磁铁123断电后，可以撤除对球体111的推力，球体111可以在重力的作用下，重新落回到弧形滑道421的底端以再次堵住、关闭排气口40(如图2所示)。
例如在图2的示例中，煲盖4上可以限定出滑移通道43，连动件121可水平滑移地设 在滑移通道43内，连动件121的左端与铁芯1231固定相连，连动件121的右端与球体111相互作用，电磁铁123通电后，铁芯1231推动连动件121向右移动以推动球体111向右上方移动以打开排气口40，电磁铁123断电后，铁芯1231释放对球体111的推力，球体111可以在重力的作用下滑落以关闭排气口40。由此，本实施例一的泄压装置1的结构简单、便于实现和控制。
这里，需要说明的是，电磁铁123的结构应为本领域技术人员所熟知，这里不作详述，仅作简要说明，电磁铁123可以包括线圈和铁芯1231，线圈可以绕设在铁芯1231上且与铁芯1231共同可平移地配合在磁力腔内，线圈通电(即电磁铁123通电)后可以使铁芯1231产生与磁力腔相反的磁场，从而朝向远离磁力腔的方向(例如图2中所示的右方)平移，当线圈断电后，磁场消失，铁芯1231可以停止运动。
具体地，泄压装置1进一步可以包括：设在泄压机构12与限压阀11之间的复位连动组件，复位连动组件构造成当泄压机构12不再推动限压阀11打开排气口40时，复位连动组件朝向远离限压阀11的方向运动，使得限压阀11沿弧形滑道421自由滑落以关闭排气口40。具体地，复位连动组件可以包括：弹性的密封件122和上文所述的连动件121，密封件122设在泄压机构12与排气口40之间以将泄压机构12与排气口40隔离开，从而避免从排气口40排出的蒸汽干扰泄压机构12的正常工作，连动件121可连动地连接在泄压机构12和密封件122之间，也就是说，泄压机构12可以通过连动件驱动密封件122运动，密封件122也可以通过连动件驱动泄压机构12运动。
例如在图2的示例中，密封件122连接在连动件121的右端的，当铁芯1231不推动连动件121时，密封件122处于自然形状且中部1221朝向远离球体111的方向缩进(如图2所示)，当铁芯1231推动连动件121向右移动时，连动件121推动密封件122的中部1221朝向球体111的方向凸出(如图3所示)，以使密封件122发生形变具有弹性势能，当铁芯1231停止运动时，连动件121不再向右推动密封件122的中部1221，密封件122的中部1221可以在弹性力的作用下恢复原形向远离球体111的方向再次缩进，进而推动连动件121和铁芯1231向左平移。当然，本发明不限于此，还可以通过在连动件121的长度方向上的一端设置复位弹簧的方式实现连动杆113的向左撤回，这里不再详述。
实施例二，
如图4和图5所示，本实施例与实施例一的结构大致相同，其中相同的部件采用相同的附图标记，不同之处仅在于：本实施例二中采用凸轮组件代替实施例一中的电磁铁123。其中，凸轮组件可以为带有凸轮1242的电机124。
具体地，参照图4和图5，泄压机构12包括：电机124和凸轮1242，电机124具有输出轴1241，凸轮1242安装在输出轴1241上以通过电机124驱动旋转，连动件121设在凸轮1242与球体111之间，电机124驱动凸轮1242转动的过程中，凸轮1242的外周面可以通过推动连动件121的右端面使得连动件121在左右方向上平移，当凸轮1242转动至其长轴端的外周面与连动件121接触时(如图5所示)，连动件121朝向球体111的方向运动以推动球体111沿弧形滑道421向上滑动以打开排气口40，当凸轮1242转动至其短轴端的外周面与连动件121接触时(如图4所示)，连动件121不再受到向右的推力，从而释放对球体111的推力，球体111可以在重力的作用下滑落以关闭排气口40。由此，本实施例二的泄压装置1的结构简单、便于实现和控制。
由此，由于凸轮组件工作的过程中没有工作噪音，从而可以安静地控制限压阀11的开闭动作，这样，用户在使用电饭煲煮饭的过程中，电饭煲不存在工作噪音，从而提高了电饭煲的使用舒适性，使得电饭煲更加适于家庭应用。
实施例三，
如图6和图7所示，本实施例与实施例一的结构大致相同，其中相同的部件采用相同的附图标记，不同之处包括：本实施例三中采用磁力阀125代替实施例一中的电磁铁123，且球体111的运动方向为竖直方向。
具体地，球体111可上下移动地设在排气口40的上方，泄压机构12为磁力阀125，泄压装置1构造成当磁力阀125通电时，磁力阀125吸引球体111向上移动以打开排气口40。参照图6和图7，磁力阀125可以设在球体111的上方，磁力阀125可以产生磁力以吸引金属材料的球体111向上移动，从而打开排气口40，当磁力阀125断电后，磁力阀125的磁力消失不再吸引球体111，球体111可以在重力的作用下落下，以关闭排气口40。当然，本发明不限于此，球体111还可以不由金属材料制成，此时仅需在球体111上设置可以被吸引的磁性材料件即可。
这里，磁力阀125的结构应为本领域技术人员所熟知，这里不作详述，仅作简要说明，磁力阀125可以包括线圈1251和磁性材料件1252，线圈1251绕设在磁性材料件1252上，当线圈1251通电后可以使磁性材料件1252磁化以具有磁性，从而吸引球体111，当线圈1251断电后，磁性材料件1252的磁性可以消失，不再吸引球体111。
这里，需要说明的是，上述三个实施例中，由于均采用了球体111来进行限压，如果想要较好地产生突沸现象，排气口40最好加工的比较大，同时，球体111的重量也最好比较重些，从而容易实现较好的突沸效果。但是，如果将排气口40加工的比较大，且将球体111 加工的比较重，则会导致煲盖4较厚，采用电磁铁123或磁力阀125来顶开球体111均需要较大的动力。而下述的三个实施例中的限压阀11就不存在上述问题，排气口40无需加工的比较大、煲盖4无需加工的较厚，且仅需较小的动力限压阀11就可以打开排气口40，工作时不容易出现卡死的问题，可以可靠地确保电饭煲可靠地工作。
实施例四，
如图8和图9所示，本实施例与实施例一的结构大致相同，其中相同的部件采用相同的附图标记。
具体地，限压阀11为密封挡件112，密封挡件112可上下移动地设在排气口40的上方，泄压装置1进一步包括：限位件和连动组件，连动组件连接在泄压机构12与限压阀11之间且与限位件配合，泄压装置1构造成当泄压机构12推动连动组件朝向限压阀11的方向移动时，限位件驱使连动组件带动限压阀11同步下移以关闭排气口40。
限位件为固定在连动组件上方的限位杆116，连动组件包括：连动杆113和导向件115，连动杆113连接在泄压机构12与限压阀11之间，连动杆113可由泄压机构12驱动以相对限压阀11水平移动，导向件115固定在连动杆113上，导向件115上具有始终与限位杆116的下端配合滑动的导向面，泄压装置1构造成当泄压机构12驱动连动杆113朝向限压阀11的方向水平移动的过程中，限位杆116的下端沿导向面向上滑动以推动导向件115、连动杆113和限压阀11下移以关闭排气口40。
例如在图8和图9的示例中，密封挡件112沿上下方向延伸，且在排气口40的上方可上下移动，连动杆113可以大体沿水平方向延伸，连动杆113的左端可以与铁芯1231固定相连，连动杆113的右端向右穿过密封挡件112的且相对于所述密封挡件112可水平移动，且连动杆113上下移动的过程中可以驱动密封挡件112在上下方向上同步移动，导向件115固定安装在连动杆113的右端的上端面上，从而导向件115、驱动连动杆113、密封挡件112可以在上下方向上同步运动。
例如在图8和图9的示例中，导向面沿着从左到右的方向倾斜向下延伸，限位杆116悬挂安装在煲盖4上且始终位于导向面的上方，限位杆116的下端止抵在导向面上，由此，当铁芯1231推动连动杆113朝向限压阀11的方向(例如图8中所示的右方)移动时，由于限位杆116的位置固定，限位杆116的下端可以沿着导向面向上滑动以推动导向件115带动密封挡件112和连动杆113向下移动从而关闭排气口40(如图8所示)。
具体地，如图8所示，排气口40可以直接沿上下方向贯穿盖板41，盖板41的顶部可以设置安装件44，密封挡件112的上端穿过安装件44，且通过安装件44的导向作用可以 上下移动，密封挡件112的下端具有密封垫114，当密封挡件112向下移动至堵住排气口40时，密封垫114可以密封排气口40的外周，以实现更好的密封作用。
进一步地，限压阀11进一步包括：复位弹簧119，复位弹簧119设在连动杆113与煲盖4之间，复位弹簧119构造成当连动杆113朝向限压阀11的方向移动时被压缩，当连动杆113朝向远离限压阀11的方向移动时弹起连动杆113以使密封挡件112向上移动打开排气口40。例如在图8和图9的示例中，复位弹簧119沿上下方向可伸缩，且复位弹簧119的上下两端分别止抵在连动杆113的下端面和安装件44的上端面上，当铁芯1231向右推动连动杆113时，限位杆116沿着导向面向上移动时，连动杆113被推动下移以压缩复位弹簧119，当铁芯1231不再施加给连动杆113向右的推力时，限位杆116不再具有沿着导向面向上滑动的推动力，从而连动杆113不再被压着向下压缩复位弹簧119，此时，复位弹簧119可以恢复形状，以向上弹起，带动密封挡件112向上弹起打开排气口40，同时使得限位杆116沿着导向面向下滑动，连动杆113推动铁芯1231向左滑动。
由此，与上述三个实施例(以及下述两个实施例)相比，本实施例中的泄压装置1处于常开状态(即电磁铁123常处于通电状态)，以使限压阀11常关闭排气口40，当需要排气泄压时，关闭泄压装置1(即将电磁铁123断电)，以使限压阀11打开排气口。而上述三个实施例(以及下述两个实施例)中，泄压装置1处于常闭状态，限压阀11常关闭排气口40，当需要排气泄压时，启动泄压装置1，以使限压阀11打开排气口40。
实施例五，
如图10和图11所示，本实施例与实施例四的结构大致相同，其中相同的部件采用相同的附图标记。
具体地，限压阀11可上下移动地设在排气口40的上方，泄压机构12包括：凸轮组件，凸轮组件包括可转动的凸轮1242，凸轮组件构造成当凸轮1242的长轴端推动限压阀11时限压阀11下移以关闭排气口40。参照图10和图11，泄压机构12包括：电机124(例如步进电机)和凸轮1242，电机124具有输出轴1241，凸轮1242安装在输出轴1241上以通过电机124驱动旋转，凸轮1242的外周面直接或者间接止抵在密封挡件112上，例如在图10的示例中，密封挡件112的上端可以固定有水平设置的阶梯形挡板117，凸轮1242的外端面止抵在挡板117的上端面上，从而间接止抵在密封挡件112上，当电机124驱动凸轮1242转动的过程中，当凸轮1242的长轴外周面止抵在挡板117上时，密封挡件112被挡板117带动下移，以关闭排气口40(如图10的所示)，当凸轮1242的短轴外周面止抵在挡板117上时，密封挡件112不再被推动下移，从而可以打开排气口40(如图11的所示)。
进一步地，限压阀11进一步可以包括：复位弹簧119，复位弹簧119设在密封挡件112与煲盖4之间，例如在图11的示例中，复位弹簧119沿上下方向可伸缩，且复位弹簧119的上下两端分别止抵在挡板117的下端面和安装件44的上端面上，复位弹簧119构造成当凸轮1242的长轴外周面止抵在密封挡件112上时被压缩(如图10的所示)，当凸轮1242的短轴外周面止抵在密封挡件112上时弹起，密封挡件112以打开排气口40(如图11的所示)。当然，本发明不限于此，还可以通过其他方式实现密封挡件112的复位动作。
实施例六，
如图12和图13所示，本实施例与实施例四的结构大致相同，其中相同的部件采用相同的附图标记，不同之处包括：采用磁力阀125代替实施例四中的电磁铁123。
具体地，密封挡件112可上下移动地设在排气口40的上方，泄压机构12为磁力阀125，泄压装置1构造成当磁力阀125通电时，磁力阀125吸引密封挡件112向上移动以打开排气口40。参照图12和图13，磁力阀125可以设在密封挡件112的上方，密封挡件112可以为金属材料件或者可以在密封挡件112的上端固定金属材料件(例如图13中所述的金属片118)，磁力阀125可以产生磁力以吸引具有金属片118的密封挡件112向上移动，从而打开排气口40，当磁力阀125断电后，磁力阀125的磁力消失不再吸引球体111，球体111可以在重力的作用下落下，以关闭排气口40。
下面参考附图1描述根据本发明实施例的电饭煲的煮饭控制方法，图1中所示的横轴代表时间，左侧的纵轴代表烹饪腔底部温度，右侧的纵轴代表烹饪腔内压力，温度曲线T代表烹饪腔底部温度随时间的变化，压力曲线P代表烹饪腔内压力随时间的变化。
具体地，烹饪腔外的底部可以设有用于对烹饪腔底部加热的加热装置和用于检测烹饪腔底部温度的温度传感器(图1中所示的温度曲线T就是由该温度传感器测得的)，根据烹饪腔底部的温度随时间的变化可以将整个煮饭过程大致分为预热阶段S1、吸水阶段S2、加热阶段S3、突沸阶段S4、沸腾阶段S5和焖饭阶段S6共六个阶段，另外，焖饭阶段S6结束后还可以具有保温阶段S7。当然，本发明不限于此，加热装置还可以不设在烹饪腔的底部。
第一阶段：预热阶段S1
启动电饭煲的煮饭功能后，可以通过加热装置对烹饪腔进行加热，以使烹饪腔内的米汤温度由室温升高至吸水温度T吸，可选地，40℃≤T吸≤60℃。由此，预热阶段S1主要的作用是通过快速加热使米汤升温至适合米粒吸水的最佳温度区间。
第二阶段：吸水阶段S2
预热阶段S1结束后，可以通过加热装置进行低功率的加热，以使烹饪腔内的米汤温度 维持在T吸，并持续一段时长t1，优选地，5min≤t1≤30min。由此，吸水阶段可以使米粒进行充分地吸水，使得大米的含水率在吸水阶段结束后保证升高至在20％～28％的水平。另外，将米汤温度保持在适合米粒吸水的最佳温度T吸的目的在于：米汤温度太低会导致米粒吸水速度降低，导致吸水时间过长，温度太高会导致米粒在吸水阶段表面糊化变粘，过早形成结块的米团，阻碍米团中心的米粒吸水。
第三阶段：加热阶段S3
吸水阶段S2结束后，可以通过加热装置进行大功率的加热，以使烹饪腔内的米汤温度由T吸快速升高至预设的迁移突沸温度T突沸。
在此阶段，大米一方面会继续吸水膨胀，另一方面由于米汤温度较高，大米表层部位会开始糊化变粘，导致米粒会粘结在一起形成米团，处于米团中间的米粒会因为外面米团的包围而发生吸水速度下降或者吸水困难的问题。
另外，在此过程中，随着加热过程的持续，锅体中的水温度越来越高，此时水中的气体溶解度随着温度升高会逐步降低，使得水中原本溶解的气体逐渐析出以气泡的形式浮起排放到烹饪腔内的除米汤以外的密闭空腔中，由于气体在密闭的空腔中无法流通且基本不发生对流，一方面，会导致密闭的空腔内的气压上升至大于外部大气压强，另一方面，由于，密闭的空腔中气体锅体中被加热的米水与密闭的空气腔仅靠空气层进行热传导，传热速度非常慢，会造成烹饪腔内远离米汤表面的空气温度与接近米汤表面的空气温度产生比较大的温差ΔT，ΔT差异大小会因产品的结构空间或煮食米饭的量不同而不同，一般的差异值为10℃～25℃，致使设置在煲盖4中的检测装置2检测的烹饪腔的气体温度与米汤的实际温度差异很大。
因此，可以在加热阶段中添设一个排冷空气工序S31，即通过强制性地打开排气口40使得烹饪腔内的冷空气排出到烹饪腔外部，一方面使烹饪腔内远离米汤表面的气体温度与接近米汤表面的气体温度更加接近，使得检测装置2检测的气体温度更贴近米汤温度，另一方面排出冷空气后可以降低冷空气存在而造成的米饭变色的问题。
具体地，在加热阶段S3，当米汤温升高至90℃以上之后，当检测气体温度的检测装置2检测的气体温度值T满足：T≥90℃-ΔT时，通过控制泄压装置1将排气口40打开，并保持一定的时长t2，其中，排气口40排冷气的时长t2可以根据烹饪腔的容积以及米饭的量来具体设置，一般地，t2满足：1s≤t2≤30s，从而使得烹饪腔内与电饭煲外界大气实现强制流通，将烹饪腔内的冷空气迅速排出到电饭煲外部。
这里，需要说明的是，当检测装置2可以直接检测汤液温度时，当检测装置2检测的汤 液温度T’满足：T’≥90℃时，直接通过控制泄压装置1将排气口40打开，并保持一定的时长t2即可。由此，可以有效地改善由于冷气存在而造成的米饭变色问题。
第四阶段：突沸阶段S4
在加热阶段S3结束后与沸腾阶段S5开始前插入一个突沸搅拌工序S4，通过突然的压力释放变化，使得烹饪腔内的米汤产生突沸的效果以搅动米烫进行翻滚运动，以打散结块的米团，促进整锅米饭吸水和加热的均匀性。
当检测装置2检测到烹饪腔内米汤温度升高至突沸温度T突沸和/或烹饪腔内的压力升高至突沸压力P突沸时，通过控制上述泄压装置1动作至少两次以上(每次的时长可以根据实际要求设置)，以将排气口40打开至少两次以上，以使使烹饪腔内的压力逐次降低，最终可以降至标准大气压状态(例如一个标准大气压1atm)，也就是说，通过短时间的多次强制泄压，使烹饪腔内的压力逐次下降、最终至常压状态，使得在每次泄压过程中烹饪腔内的米汤均可以由于温度高于当前泄压后的气压下的沸腾温度而突然剧烈沸腾，产生搅拌翻腾的效果，以突沸的冲击力产生、使米粒翻腾搅拌来打散加热阶段因米粒表面糊化变粘而造成的结块米团，促进米饭整体的吸水一致性和加热的均匀性。
其中，突沸温度T突沸可以为接近限压阀11的额定压力P额状态下对应的沸腾温度T沸的温度，例如，优选地，T突沸满足：T沸-5℃≤T突沸≤T沸-1℃，此时，当检测装置2检测到烹饪腔内的汤液温度升高至接近沸腾温度T沸时，就可以开始进行一次升压后的多次突沸操作，其中，沸腾温度T沸受烹饪腔内的气压影响，不同压力状态下沸腾温度T沸不同，具体的对应关系见表1。
表.1：水的沸点与气压值的对应关系
气压值P/(一个标准大气压atm) 沸腾温度T/(摄氏度℃)
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
另外，需要说明的是，当加热阶段S3包括排冷空气工序S31时，排冷气工序S31结束后，排气口40又重新置为关闭状态，此时烹饪腔内的气压恢复为标准大气压状态，随着加热的继续，当米汤温度升高至100℃时，米汤中的水会产生短时间的沸腾，造成大量的水蒸汽进入到烹饪腔中容纳气体的密闭空腔中，使得密封空腔的气压迅速升高，锅体中的水会随着压力的升高又恢复为不沸腾的状态，当检测装置2检测到烹饪腔内米汤温度升高至T突 沸时，再开始突沸搅拌工序。此时，由于前一步的排冷气工序S31，检测装置2即使检测的温度为米汤上方的气体温度，也可以近似认为等于米汤的温度。
第五阶段：沸腾阶段S5
突沸阶段S4结束后关闭排气口40，停止强制排气，维持一定的加热功率，使得烹饪腔内的米汤维持在额定压力P额下，以额定压力P额对应的沸腾温度T沸持续沸腾，直至烹饪腔内游离的水份完全被米饭吸收或者随着沸腾蒸发后(即汤液煮干后)，烹饪腔底部的温度随着加热的持续迅速升高到预设的迁移温度T迁，优选地，120℃≤T迁≤130℃，在此阶段，米粒长期维持在100℃以上的高温进行糊化，将大米致密的β淀粉充分转化成可以被人体消化吸收的疏松α淀粉结构。
第六阶段：焖饭阶段S6
自沸腾阶段S5结束直至煮饭结束设置的一段维持时间t维(优选地，3min≤t维≤15min)，这段时间，电饭煲可以以比较低的功率加热，或者不加热以直接例如烹饪腔内的的蓄热持续对米饭进行余热补炊，从而进一步促进米饭的糊化，提升米饭的口感。这里，需要说明的是，低功率加热和高功率加热的区别在于加热的速度不同，例如低功率加热可以理解为以较慢的速度达到某一温度，高功率加热可以理解为以较快的速度达到上述温度。
根据本发明实施例的电饭煲的煮饭控制方法，通过多次连续突然泄压实现米汤的多次连续突沸搅拌，从而可以有效地打散形成结块的米团，提高米饭的加热均匀性和糊化一致性，提高米饭的口感和米饭的烹煮效率。
在本发明的描述中，需要理解的是，术语“上”、“下”、“左”、“右”、“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。
在本发明中，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”、“固定”等术语应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或成一体；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本发明中的具体含义。
在本发明中，除非另有明确的规定和限定，第一特征在第二特征“上”或“下”可以是第一和第二特征直接接触，或第一和第二特征通过中间媒介间接接触。而且，第一特征在第二特征“之上”、“上方”和“上面”可是第一特征在第二特征正上方或斜上方，或仅 仅表示第一特征水平高度高于第二特征。第一特征在第二特征“之下”、“下方”和“下面”可以是第一特征在第二特征正下方或斜下方，或仅仅表示第一特征水平高度小于第二特征。
在本说明书的描述中，参考术语“一个实施例”、“一些实施例”、“示例”、“具体示例”、或“一些示例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本发明的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不必须针对的是相同的实施例或示例。而且，描述的具体特征、结构、材料或者特点可以在任一个或多个实施例或示例中以合适的方式结合。此外，在不相互矛盾的情况下，本领域的技术人员可以将本说明书中描述的不同实施例或示例以及不同实施例或示例的特征进行结合和组合。
尽管已经示出和描述了本发明的实施例，本领域的普通技术人员可以理解：在不脱离本发明的原理和宗旨的情况下可以对这些实施例进行多种变化、修改、替换和变型，本发明的范围由权利要求及其等同物限定。

Claims (24)

  1. 一种电饭煲，其特征在于，包括：
    煲体，所述煲体内限定出烹饪腔；
    煲盖，所述煲盖可开合地设在所述煲体上以打开或者关闭所述烹饪腔；
    用于对所述烹饪腔加热的加热装置；
    用于检测所述烹饪腔内汤液温度和/或用于检测所述烹饪腔内压力的检测装置；以及
    用于使所述烹饪腔内的压力维持在额定压力P额以下的泄压装置，所述泄压装置构造成当所述检测装置检测到所述烹饪腔内的汤液温度升高至突沸温度T突沸和/或所述烹饪腔内的压力升高至突沸压力P突沸时，所述泄压装置强制所述烹饪腔排气至少两次以上、以使所述烹饪腔内的压力逐次降低、以使所述烹饪腔内的汤液突沸至少两次以上，其中：T突沸≤T沸，P突沸≤P额，T沸为所述烹饪腔内的汤液在所述额定压力P额时的沸腾温度。
  2. 根据权利要求1所述的电饭煲，其特征在于，所述泄压装置进一步构造成强制所述烹饪腔排气两次以上直至所述烹饪腔内的压力降低至与所述煲盖外的环境压力相等。
  3. 根据权利要求1或2所述的电饭煲，其特征在于，所述烹饪腔内的压力逐次降低的过程中，后一次压力下降的幅度小于前一次压力下降的幅度。
  4. 根据权利要求1-3任一项所述的电饭煲，其特征在于，T突沸＜T沸，P突沸＜P额。
  5. 根据权利要求4所述的电饭煲，其特征在于，所述突沸温度T突沸满足关系：T沸-5℃≤T突沸≤T沸-1℃。
  6. 根据权利要求4所述的电饭煲，其特征在于，所述突沸压力P突沸满足关系：P额-0.2atm≤P突沸≤P额-0.05atm。
  7. 根据权利要求1-3任一项所述的电饭煲，其特征在于，T突沸＝T沸，P突沸＝P额。
  8. 根据权利要求1-7中任一项所述的电饭煲，其特征在于，所述泄压装置进一步构造成当所述检测装置检测到所述烹饪腔内的汤液温度升高至排气温度T排和/或所述烹饪腔内的压力升高至排气温度P排时强制所述烹饪腔排气，其中，T排＜T突沸，P排＜P突沸。
  9. 根据权利要求8所述的电饭煲，其特征在于，所述排气温度T排满足：T排＝90℃。
  10. 根据权利要求8所述的电饭煲，其特征在于，所述排气压力P排满足：1.01atm≤P排≤1.1atm。
  11. 根据权利要求1-10中任一项所述的电饭煲，其特征在于，所述泄压装置进一步构造成强制所述烹饪腔排气两次以上之后，使所述烹饪腔内的汤液温度升高至沸腾温度T沸且使所述汤液维持在所述沸腾温度T沸下持续沸腾至煮干。
  12. 根据权利要求1-11中任一项所述的电饭煲，其特征在于，所述煲盖上形成有连通所述电饭煲外部与所述烹饪腔的排气口，所述泄压装置包括：限压阀和泄压机构，所述泄压机构用于驱使所述限压阀打开或者关闭所述排气口。
  13. 根据权利要求12所述的电饭煲，其特征在于，所述煲盖上具有弧形滑道，所述排气口贯穿所述弧形滑道的底端，所述限压阀可滑动地设在所述弧形滑道上且常抵挡在所述排气口上以关闭所述排气口，所述泄压机构用于驱使所述限压阀沿所述弧形滑道向上滑动以打开所述排气口。
  14. 根据权利要求13所述的电饭煲，其特征在于，所述泄压机构包括：
    电磁铁，所述电磁铁包括可水平移动的铁芯，所述电磁铁构造成当所述电磁铁通电后，所述铁芯朝向所述限压阀的方向运动以推动所述限压阀沿所述弧形滑道向上滑动以打开所述排气口；或
    凸轮组件，所述凸轮组件包括可转动的凸轮，所述凸轮组件构造成当所述凸轮的长轴端推动所述限压阀时所述限压阀沿所述弧形滑道向上滑动以打开所述排气口。
  15. 根据权利要求14所述的电饭煲，其特征在于，所述泄压装置进一步包括：设在所述泄压机构与限压阀之间的复位连动组件，所述复位连动组件构造成当所述泄压机构不再推动所述限压阀打开所述排气口时，所述复位连动组件的部分朝向远离所述限压阀的方向运动，使得所述限压阀沿所述弧形滑道自由滑落以关闭所述排气口，所述复位连动组件包括：弹性的密封件和连动件，所述密封件设在所述泄压机构与所述排气口之间以将所述泄压机构与所述排气口隔离开，所述连动件可连动地连接在所述泄压机构和所述密封件之间。
  16. 根据权利要求12所述的电饭煲，其特征在于，所述泄压机构为磁力阀，所述泄压装置构造成当所述磁力阀通电时，所述磁力阀吸引所述限压阀移动以打开所述排气口。
  17. 根据权利要求16所述的电饭煲，其特征在于，所述限压阀可上下移动地设在所述排气口的上方，所述磁力阀设在所述限压阀的上方，所述泄压装置构造成当所述磁力阀通电时，所述磁力阀吸引所述限压阀向上移动以打开所述排气口。
  18. 根据权利要求12所述的电饭煲，其特征在于，所述限压阀可上下移动地设在所述排气口的上方，所述泄压装置进一步包括：
    限位件；和
    连动组件，所述连动组件连接在所述泄压机构与所述限压阀之间且与所述限位件配合，所述泄压装置构造成当所述泄压机构推动所述连动组件朝向所述限压阀的方向移动时，所述限位件驱使所述连动组件带动所述限压阀同步下移以关闭所述排气口。
  19. 根据权利要求18所述的电饭煲，其特征在于，所述限位件为固定在所述连动组件上方的限位杆，所述连动组件包括：
    连动杆，所述连动杆连接在所述泄压机构与所述限压阀之间，所述连动杆可由所述泄压机构驱动以相对所述限压阀水平移动；
    导向件，所述导向件固定在所述连动杆上，所述导向件上具有始终与所述限位杆的下端配合滑动的导向面，
    所述泄压装置构造成当所述泄压机构驱动所述连动杆朝向所述限压阀的方向水平移动的过程中，所述限位杆的所述下端沿所述导向面向上滑动以推动所述导向件、所述连动杆和所述限压阀下移以关闭所述排气口。
  20. 根据权利要求18或19所述的电饭煲，其特征在于，所述泄压装置进一步包括：
    复位弹簧，所述复位弹簧设在所述连动组件与所述煲盖之间，所述复位弹簧构造成当所述连动组件朝向所述限压阀的方向移动时被下移的所述连动组件压缩，所述复位弹簧弹起时推动所述连动组件和所述限压阀上移以打开所述排气口。
  21. 根据权利要求18-20中任一项所述的电饭煲，其特征在于，所述泄压机构包括：电磁铁，所述电磁铁包括可水平移动且与所述连动组件相连的铁芯，所述泄压装置构造成当所述电磁铁通电后，所述铁芯朝向所述限压阀的方向运动以驱动所述限压阀关闭所述排气口。
  22. 根据权利要求12所述的电饭煲，其特征在于，所述限压阀可上下移动地设在所述排气口的上方，所述泄压机构包括：凸轮组件，所述凸轮组件包括可转动的凸轮，所述凸轮组件构造成当所述凸轮的长轴端推动所述限压阀时所述限压阀下移以关闭所述排气口。
  23. 根据权利要求22所述的电饭煲，其特征在于，所述泄压装置进一步包括：复位弹簧，所述复位弹簧设在所述限压阀与所述煲盖之间，所述复位弹簧构造成当所述凸轮的长轴端推动所述限压阀时由下移的所述限压阀压缩，当所述复位弹簧弹起时推动所述限压阀上移以打开所述排气口。
  24. 一种根据权利要求1-23中任一项所述的电饭煲的煮饭控制方法，其特征在于，包括以下步骤：
    S1、对所述烹饪腔内的汤液进行加热；
    S2、当所述检测装置检测到所述烹饪腔内的汤液温度升高至突沸温度T突沸和/或所述烹饪腔内的压力升高至突沸压力P突沸时，通过所述泄压装置强制所述烹饪腔排气至少两次以上、以使所述烹饪腔内的压力逐次降低、以使所述烹饪腔内的汤液突沸至少两次以上。
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10390656B2 (en) 2017-08-09 2019-08-27 Sharkninja Operating Llc Cooking device and components thereof
CN110652197A (zh) * 2018-06-29 2020-01-07 浙江绍兴苏泊尔生活电器有限公司 压力烹饪器具
USD873602S1 (en) 2018-08-09 2020-01-28 Sharkninja Operating Llc Lid part of a food preparation device
USD874211S1 (en) 2018-08-09 2020-02-04 Sharkninja Operating Llc Food preparation device and parts thereof
USD903413S1 (en) 2018-08-09 2020-12-01 Sharkninja Operating Llc Cooking basket
CN112438586A (zh) * 2019-08-30 2021-03-05 佛山市顺德区美的电热电器制造有限公司 烹饪设备及其控制方法、装置和计算机可读存储介质
USD914436S1 (en) 2018-06-19 2021-03-30 Sharkninja Operating Llc Air diffuser with food preparation pot
USD918654S1 (en) 2019-06-06 2021-05-11 Sharkninja Operating Llc Grill plate
US11033146B2 (en) 2019-02-25 2021-06-15 Sharkninja Operating Llc Cooking device and components thereof
USD922126S1 (en) 2019-06-06 2021-06-15 Sharkninja Operating Llc User interface for a food preparation device
US11134808B2 (en) 2020-03-30 2021-10-05 Sharkninja Operating Llc Cooking device and components thereof
USD932833S1 (en) 2018-08-09 2021-10-12 Sharkninja Operating Llc Reversible cooking rack
EP3945965A4 (en) * 2019-03-28 2022-12-21 Zhejiang Shaoxing Supor Domestic Electrical Appliance Co., Ltd. BOWL COVER, BOWL AND FOOD PROCESSOR
US11751710B2 (en) 2019-02-25 2023-09-12 Sharkninja Operating Llc Guard for cooking system

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012095893A (ja) * 2010-11-04 2012-05-24 Sanyo Electric Co Ltd 炊飯方法及び炊飯器
CN103784024A (zh) * 2014-01-24 2014-05-14 美的集团股份有限公司 电饭煲上盖、电饭煲和电饭煲内压力的控制方法
CN103989400A (zh) * 2013-02-20 2014-08-20 松下电器产业株式会社 压力式煮饭器
CN205018804U (zh) * 2015-09-25 2016-02-10 佛山市顺德区美的电热电器制造有限公司 电饭煲
CN205018820U (zh) * 2015-09-25 2016-02-10 佛山市顺德区美的电热电器制造有限公司 电饭煲
CN106175418A (zh) * 2016-09-28 2016-12-07 佛山市顺德区美的电热电器制造有限公司 电饭煲及其煮饭控制方法

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012095893A (ja) * 2010-11-04 2012-05-24 Sanyo Electric Co Ltd 炊飯方法及び炊飯器
CN103989400A (zh) * 2013-02-20 2014-08-20 松下电器产业株式会社 压力式煮饭器
CN103784024A (zh) * 2014-01-24 2014-05-14 美的集团股份有限公司 电饭煲上盖、电饭煲和电饭煲内压力的控制方法
CN205018804U (zh) * 2015-09-25 2016-02-10 佛山市顺德区美的电热电器制造有限公司 电饭煲
CN205018820U (zh) * 2015-09-25 2016-02-10 佛山市顺德区美的电热电器制造有限公司 电饭煲
CN106175418A (zh) * 2016-09-28 2016-12-07 佛山市顺德区美的电热电器制造有限公司 电饭煲及其煮饭控制方法

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* Cited by examiner, † Cited by third party
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