JP2018175104A - Cooker - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cooker which can safely release pressure without degrading usability.SOLUTION: The present invention includes: a body; an inner pot stored in the body; a cover covering an upper part of the body; an inner cover for covering the inner pot in a sealed manner; a lock means for maintaining the sealed state between the inner pot and the inner cover even when a predefined pressure higher than atmospheric pressure is applied to an inner space sealed in the inner pot and the inner cover; a pressure reduction means for returning the predefined pressure applied to the inner space sealed in the inner pot and the inner cover back to the atmospheric pressure; and a heating means for heating the inner pot. The pressure reduction means in includes a steam valve opening/closing means. The steam valve opening/closing means includes: a slide member provided with an inclination part for transmitting a horizontal operation force by changing in a vertical direction; and a steam valve driving member which opens or closes the steam valve having a slide contact part to which the inclination part comes into contact. The inclination part is formed in a stair-like shape made up of a plurality of inclinations.SELECTED DRAWING: Figure 12

Description

  The present invention relates to a cooker for cooking at a pressure higher than atmospheric pressure.

  Conventionally, there is known a cooker which cooks by applying a pressure higher than atmospheric pressure in the pan using steam generated by heating the food contained in the pan in the cooker. If the food is rice, it can be cooked deliciously plumply, and if the food is meat, it can be boiled softly in a short time.

  Such a cooker is dangerous because high temperature water vapor is dissipated when the lid is opened under high pressure in the pan. Therefore, when opening the lid, it is necessary to remove steam forcibly by pressure regulating valve, steam release valve, etc. to return the internal pressure to the same pressure as the atmospheric pressure and then open it. Since a high temperature steam is jetted out at once and there is a danger of burns and the like, a cooker configured to prevent the steam at a high temperature from jetting out from the steam outlet at once has been proposed (see, for example, Patent Documents 1 and 2).

JP-A-2000-70134 (page 3, FIG. 1) JP 2001-137113 A (page 4, FIG. 4)

  In the conventional cooker described in Patent Document 1, the opening area of the steam relief hole of the pressure relief valve is smaller than the steam relief hole of the lid, and steam is jetted out from the steam relief port of the lid at a stretch. It is suppressing.

However, since the opening area of the steam relief hole of the pressure relief valve is reduced, it takes time to return to the same pressure as the atmospheric pressure.

Moreover, in the conventional cooker described in Patent Document 2, the pressure regulating valve body for adjusting the pressure is controlled to be intermittently opened by a solenoid, and steam is spouted out at once from the exhaust port of the lid. It is suppressing.

However, there is a problem that the control becomes complicated because the pressure regulating valve body for adjusting the pressure is controlled to be opened intermittently by the solenoid.

  The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a cooker which can release pressure safely without losing usability.

  The cooker according to the present invention comprises: a main body having an opening at the top, a cylindrical inner pot having a bottom and an opening at the upper end, which is accommodated in the main body so as to be able to be taken in and out from the main body opening; A cover which covers the upper part of the main body and which has a seal member, the seal member being in contact with the entire circumference of the upper end opening of the inner pot to sealably cover the inner pot The inner lid and the lock means for holding the sealed state of the inner lid and the inner lid even if a predetermined pressure higher than atmospheric pressure is applied to the inner space sealed by the inner lid and the inner lid, and the inner pot and the inner lid The pressure reducing means for returning the pressure from the predetermined pressure applied to the sealed internal space to the same pressure as the atmospheric pressure, and the heating means provided in the main body for heating the inner pot, the pressure reducing means opens the steam valve The steam is discharged to lower the pressure, and by operating in the horizontal direction, the steam It has a steam valve opening and closing means to be operated, and the steam valve opening and closing means is provided with a slide member provided with an inclined portion for changing the operating force in the left-right direction up and down and a slide contact portion abutting on the inclined portion And a steam valve drive member for opening or closing the steam valve, and the inclined portion is formed in a step shape with a plurality of slopes.

  According to the present invention, the steam valve opening / closing means is provided with the slide member provided with the inclined portion for transmitting the operating force in the left-right direction in the vertical direction, and the slide contact portion abutting on the inclined portion The steam valve drive member for opening or closing the steam valve, and the inclined portion is formed in a step shape with a plurality of slopes, so the steam valve opening speed can be controlled and safety can be achieved without losing usability. The pressure in the inner pot can be returned to atmospheric pressure.

BRIEF DESCRIPTION OF THE DRAWINGS It is a whole perspective view of the cooking device which concerns on Embodiment 1 of this invention. It is a whole perspective view in the state where the lid of the cooking device concerning embodiment of the invention 1 was opened. It is sectional drawing which cut | disconnected the cooker which concerns on Embodiment 1 of this invention in the front-back direction with cut-off line AA shown in FIG. It is sectional drawing which cut | disconnected the cooker which concerns on Embodiment 1 of this invention in the left-right direction with cutting-plane line B-B shown in FIG. It is a perspective view of the inner pot accommodated in the cooking device according to Embodiment 1 of the present invention. It is the figure which looked at the lid of the cooking device concerning Embodiment 1 of the present invention from the field side which counters the upper end opening side of an inner pot. It is a perspective view of the state which removed the shell part from the cover body of the cooking device which concerns on Embodiment 1 of this invention. (A) Principal part sectional view when inner pot internal pressure detection means of the cooker according to Embodiment 1 of the present invention is lower than atmospheric pressure, (b) according to Embodiment 1 of the present invention Principal part sectional view when the inner pot internal pressure detection means of a cooking appliance is in the same state as atmospheric pressure, (c) The internal pan internal pressure detection means of the cooking appliance according to the first embodiment of the present invention is atmospheric pressure It is principal part sectional drawing in the state which is applying the higher predetermined pressure. (A) A perspective view of the lid of the cooker according to Embodiment 1 of the present invention from which the shell part has been removed, as viewed from a direction different from that in FIG. 7, (b) Cutting line shown in FIG. It is the sectional view cut in the direction of order with CC, (c) It is an enlarged drawing of the G section shown in Drawing 9 (b). (A) illustrates the operation of the pressure reducing means and shows the fully closed state of the steam valve by the steam valve opening and closing means, (b) illustrates the operation of the pressure reducing means and shows the fully open state of the steam valve by the steam valve opening and closing means FIG. It is a perspective view which operates the principle of decompression means and shows the composition of steam valve opening and closing means. (A) illustrates the operation of the pressure reducing means and shows a state during the opening of the steam valve by the steam valve opening and closing means, (b) illustrates the operation of the pressure reducing means and is an essential part around the inclined portion of the slide member It is an enlarged view. (A) A diagram showing a state during the opening of the steam valve by the steam valve opening / closing means of the cooker according to the first embodiment of the present invention, (b) steam valve opening / closing of the cooker according to the first embodiment of the present invention It is a principal part enlarged view of the step-like slope part periphery of the slide member of means. (A) A diagram showing a state during the opening of the steam valve by the steam valve opening / closing means of the cooker according to the second embodiment of the present invention, (b) steam valve opening / closing of the cooker according to the second embodiment of the present invention It is a principal part enlarged view of the step-like slope part periphery of the slide member of means.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the drawings, the same or corresponding parts will be denoted by the same reference numerals, and the description thereof will be appropriately omitted or simplified. Further, the configuration, size, arrangement and the like of the configuration described in each drawing can be appropriately changed within the scope of the present invention.

Embodiment 1
[Schematic configuration of the entire cooker]
FIG. 1 is an overall perspective view of a cooker according to Embodiment 1 of the present invention, FIG. 2 is an overall perspective view of a cooker according to Embodiment 1 of the present invention with a lid opened, and FIG. 1. Sectional drawing which cut | disconnected the cooking device which concerns on Embodiment 1 of invention in the front-back direction with cut-off line AA shown in FIG. 1, FIG. 4 is a cutting line which shows the cooker which concerns on Embodiment 1 of this invention in FIG. FIG. 5 is a cross-sectional view cut in the left-right direction along B-B, FIG. 5 is a perspective view of an inner pot accommodated in the cooker according to Embodiment 1 of the present invention, FIG. 6 is a cooker according to Embodiment 1 of the present invention FIG. 7 is a perspective view of the lid of the cooker according to the first embodiment of the present invention from which the shell is removed, as viewed from the side opposite to the upper opening side of the inner pot. .

  As shown in FIG. 1 to FIG. 4, the cooker 100 according to Embodiment 1 of the present invention is a cooker that cooks the food to be cooked at a pressure higher than the atmospheric pressure, and includes the main body 1 and the lid 2 It is configured. The upper surface of the main body 1 is open, and the inner pan accommodating portion 1a (see FIG. 3) is provided inside the open portion.

  The bottomed cylindrical inner pot 3 whose upper surface shown in FIG. 5 is open is accommodated in the inner pot housing portion 1a so as to be able to be put in and out. The inner pot 3 is a cooking vessel for containing the food to be cooked, and in the case where the heating means is of the induction heating type, in consideration of the fact that it is electrically conductive and has a high withstand voltage, generally a metal material such as aluminum or the like A clad material is formed by laminating and bonding a plurality of materials such as copper. However, it is not limited to metal, and may be formed of a carbon material having conductivity if it is high withstand voltage, a clay pot having a conductive material in part, or the like.

[Inner pot]
As shown in FIG. 5, the upper surface of the inner pot 3 is open, and the inner pot 3 has a tubular shape having a bottom 3d and a body 3c. A flange portion 3b extending outward from the inner side of the inner pot is provided on the entire upper end of the opening. The flange portion 3 b is provided with a plurality of flange projecting portions 3 b 1 which extend outward from the end of the flange portion 3 b at equal intervals.

  A handle 3a is provided near the upper surface opening on the outer side of the body 3d. The handle 3a is held when the inner pot 3 is put in and out of the main body 1, and is made of resin. The handle 3a also functions as positioning so that the inner pot 3 does not rotate when the inner pot 3 is housed in the inner pot housing portion 1a. The necessity for preventing the inner pot 3 from rotating will be described later.

[Body]
Inside the main body 1, heating means 11 and 12 for heating the inner pot 3 and further heating the food contained in the inner pot 3 are provided outside the inner pot storage portion 1a. The heating means 11 is, for example, an electromagnetic induction type heating source, and is constituted by annular induction heating coils 11a, 11b and 11c (hereinafter collectively described as the heating means 11). As shown in FIG. 3, the induction heating coil 11 is provided at a position corresponding to the bottom 3 d of the inner pot 3.

  The heating means 12 is constituted of, for example, a radiant heating source. The heating means 12 is provided in the position corresponding to the trunk | drum 3c (refer FIG. 5) of the inner pot 3, as shown in FIG. In the first embodiment of the present invention, the heating means 11 is an electromagnetic induction heating source, and the heating means 12 is a radiation heating source. However, the present invention is not limited to this, and vice versa. Alternatively, both of the heating means 11 and the heating means 12 may be electromagnetic induction heat sources or radiation heat sources.

  Further, a substrate 23 for driving the heating means 11 and the heating means 12 is provided inside the main body 1.

  Commercial power is supplied to the substrate 23 by a power cord (not shown). Furthermore, inside the main body 1 is provided a blower 24 for cooling the substrate 23 and the heater 11.

  Then, inside the main body 1, an operation display substrate 25 on which operation means 25a and display means 25b are mounted is provided. The operation means 25a is a mechanical switch, and is inputted by pressing the operation button 1f provided on the outer side of the main body shown in FIG. 2, and the control means (not shown) makes a menu of cooking, cooking conditions, cooking time by this input signal. Etc. are set. In the first embodiment of the present invention, the operating means 25a is a mechanical switch. However, the present invention is not limited to this. The operating means 25a may be a touch switch type that detects an input by a change in electrostatic capacitance.

  The display means 25b is a liquid crystal display device, and displays the cooking menu, cooking conditions, cooking time and the like set by the operation means 25a as characters, numbers, figures and the like. The display content of the display means 25b can be visually recognized from the outside by a window-like display part 1e which is provided on the outer side of the main body shown in FIG. 2 and can transmit visible light. Although in the first embodiment of the present invention the display means 25b is a liquid crystal display device, the present invention is not limited to this, and a seven-segment LED or the like may be used.

  Although the operation display substrate 25 is provided on the main body 1 in the first embodiment of the present invention, the present invention is not limited to this, and the operation display substrate 25 may be provided on the lid 2.

  Inside the main body 1, the bottom surface of the inner pot housing portion 1a is provided with a temperature detection means 8 for contacting the outside of the bottom 3d of the inner pot 3 and directly detecting the temperature outside the bottom 3d of the inner pot 3 ing. The temperature detection signal of the temperature detection means 8 is transmitted to the control means (not shown), and the control means controls the heating power of the heating means 11 and 12 or displays the cooking state on the display means 25b according to the measured temperature.

[Lid]
The lid 2 is rotatably attached to a hinge portion 1b provided on the upper surface of the main body. The hinge part 1b is provided with the rotational axis 21 and the hinge spring 22, as shown in FIG. The lid 2 pivots about the axis of the pivot shaft 21.

  The hinge spring 22 biases the lid 2 in the opening direction. When the lid 2 biased in the opening direction by the hinge spring 22 is manually rotated against the biasing force of the hinge spring 22, the engagement provided at the end opposite to the side attached to the hinge portion 1b The stopper 2 a is locked by engaging the latch 1 d provided on the upper surface of the main body 1, and the lid 2 closes the upper surface opening of the main body 1.

  The lid 2 in the state of closing the upper surface opening of the main body 1 moves the latch 1 d away from the locking portion 2 a when the lid open button 1 c provided on the outer side of the main body shown in FIGS. The stopped state is released, and the biasing force of the hinge spring 22 pivots in the opening direction about the axial center of the pivot shaft 21. However, since the hinge spring 22 does not have an urging force enough to pivot the lid 2 to the fully open position, pivoting to the fully open position is manually performed.

If the biasing force of the hinge spring 22 is made strong enough to turn the lid 2 to the fully open position, the lid 2 is vigorously released at the moment when the locked state is released. Resistance to closing is not good, usability is poor, and food to be stored in the inner pot 3 is spilled by reaction when the lid 2 is vigorously moved to the fully open position, which is not good for safety and usability It will affect. Therefore, the hinge spring 22 does not have an urging force enough to turn the lid 2 to the fully open position.

  An inner lid 4 is provided on the side of the lid 2 facing the upper surface of the main body 1. The inner lid 4 is for closing the opening of the inner pot 3. The inner lid 4 is attached to the lid 2 by inner lid fixing means 4a shown in FIGS. The inner lid fixing means 4a is fixed, for example, by a screw.

  The inner lid 4 is provided with a seal member 5 on the outer periphery in order to close and close the opening of the inner pot 3. The seal member 5 is formed of silicone rubber in terms of flexibility, heat resistance, food safety, and the like. The seal member 5 is provided so as to be in contact with the flange portion 3 b provided around the entire upper end of the opening of the inner pot 3 along the entire periphery.

When the locking portion 2a of the lid 2 is engaged with the latch 1d on the upper surface of the main body 1 and the lid 2 closes the upper surface opening of the main body 1, the sealing member 5 is attached to the flange portion 3b of the inner pot 3 Contact to be pressed.

  The cooker 100 according to the first embodiment of the present invention is a cooker that cooks the food to be cooked at a pressure higher than the atmospheric pressure as described above, and the inside of the inner pot 3 closed by the inner lid 4 is It is a space for cooking, that is, a pressure space P (see FIGS. 3 and 4).

  Since pressure of 2.1 to 2.2 atmospheric pressure is applied to the pressurizing space P during cooking, only the locking portion 2a of the lid 2 is locked by the latch 1d on the upper surface of the main body 1 In this case, the cover 2 can not be resisted against the pressure of 2.1 to 2.2 atm applied to the pressure space P, and the lid 2 is opened. Therefore, in order to secure the pressurized space P even when pressure is applied during cooking, the closed state of the upper surface opening of the inner pot 3 by the inner lid 4 is mechanically held.

[Holding configuration]
As shown in FIGS. 2, 3 and 6, the lid 2 is provided with a lock ring 7 on the side facing the upper surface of the main body 1. The lock ring 7 is annular as shown in FIG. 6, and has a plurality of engaging portions 7a provided at equal intervals.

  Notches 7b are provided between the adjacent engaging portions 7a. The number of the plurality of engaging portions 7 a of the lock ring 7 is the same as the number of the flanged portions 3 b 1 of the inner pot 3. The number of engaging portions 7a and the number of notches 7b are also the same.

  The lock ring 7 is supported by the lid 2 so as to be rotatable around a rotation center D shown in FIG. The lock ring 7 rotates by rotating the lock operation knob 6 shown in FIG. 1 from a reference position described later. The lock operation knob 6 does not rotate infinitely, for example, it rotates about 15 to 20 degrees from the reference position and stops there.

  As described above, the inner pot 3 is accommodated in the inner pot accommodating portion 1 a of the main body 1 so as not to rotate. It is necessary to determine the position of the inner pot 3 so that the positional relationship between the flange projection 3b1 of the inner pot 3 and the engaging portion 7a of the lock ring 7 does not change.

  In a state where the flange projection 3b1 of the inner pot 3 is positioned at the position of the notch 7b of the lock ring 7 when the lock ring 7 and the inner pot 3 are overlapped in a plan view (not shown) That is, the engagement portion 7a of the lock ring 7 sets the position of the lock operation knob 6 when the flange portion 3b is positioned without the flange projection 3b1 of the inner pot 3 as a reference position. When the position of the lock operation knob 6 is at the reference position, the lid 2 can be opened.

  When the locking portion 2a of the lid 2 is engaged with the latch 1d on the upper surface of the main body 1 and the lid 2 closes the upper surface opening of the main body 1, as shown in FIG. The portion 7 a is provided below the flange projection 3 b 1 of the inner pot 3 in the vertical direction.

  As described above, when the lock operation knob 6 is at the reference position, when the lid 2 can be opened and closed, the engagement portion 7 a of the lock ring 7 is the flange projection 3 b 1 of the inner pot 3. It comes to come down below in the up-and-down direction rather than flange projection part 3b1 of inner pot 3 in the position of no flange part 3b.

When the engaging portion 7a of the lock ring 7 is below the flanged projecting portion 3b1 of the inner pot 3 in the vertical direction at the position of the flange portion 3b without the flanged projecting portion 3b1 of the inner pot 3 When the lock ring 7 is rotated by rotating the lock ring 7, the engaging portion 7 a of the lock ring 7 rotates so as to enter under the flange projecting portion 3 b 1 of the inner pot 3.

When the engaging portion 7a of the lock ring 7 and the flange projecting portion 3b1 of the inner pot 3 are overlapped in a plan view (not shown) with the lock ring 7 rotated, the flange projecting portion of the inner pot 3 The engaging portion 7a of the lock ring 7 is located where 3b1 is located. That is, it has rotated to the position where the flange projection part 3b1 of the inner pot 3 and the engaging part 7a of the lock ring 7 overlap.

Further, the engaging portion 7a of the lock ring 7 is engaged so as to overlap in a state of being in contact with the flange projecting portion 3b1 of the inner pot 3, and at this time, the sealing member 5 is attached to the flange portion 3b of the inner pot 3. It is pressed and in contact.

  By rotating the lock ring 7 to a position where the lock operation knob 6 is rotated so that the flange projection 3b1 of the inner pot 3 and the engagement portion 7a of the lock ring 7 overlap with each other, the pressure space P is Since the seal member 5 is in contact with the flange portion 3b of the inner pot 3 so as to be pressed against the pressure of 1 to 2.2 atmospheric pressure, the seal member 5 hangs on the pressure space P from the contact point of the seal member 5 The pressure never escapes. Further, since the engaging portion 7a of the lock ring 7 and the flange projecting portion 3b1 of the inner pot 3 are engaged in an overlapping manner, the pressure of 2.1 to 2.2 atmospheric pressure applied to the pressurizing space P is not lost. The closed state of the lid 2 can be maintained.

  Since the closed state of the lid 2 can be maintained by the engagement of the engagement portion 7a of the lock ring 7 and the flange projection 3b1 of the inner pot 3 in this manner, the engagement portion 7a of the lock ring 7 and the inner pot 3 The flange projection 3b1 serves as locking means for maintaining the cover 2 in the closed state.

In order to engage so that the engaging part 7a of the lock ring 7 and the flange projection part 3b1 of the inner pot 3 overlap with each other reliably, the inner pot 3 is prevented from rotating in the inner pot storage part 1a of the main body 1 as described above. Positioned and housed. By determining the position of the inner pot 3, the positional relationship between the flange extension 3 b 1 of the inner pot 3 and the engaging portion 7 a of the lock ring 7 does not change.

Furthermore, the lid 2 is provided with a plurality of configurations that cause the cooker 100 according to Embodiment 1 of the present invention to function as a cooker that cooks the food at a pressure higher than the atmospheric pressure.

  As shown in FIG. 7, a lock detection means 31 is provided inside the lid 2. The lock detection means 31 detects that the lock ring 7 has rotated until the engagement portion 7a and the flange projection 3b1 of the inner pot 3 are engaged so as to overlap with each other. For example, using a micro switch The lock state and non lock state are detected by the ON and OFF.

When a signal that detects the lock state is transmitted to the control means, the control means determines that the lock state is present, and the operation to start cooking can be performed. In addition, it is displayed on the display means 25b that it is in the locked state.

When a pressure of 2.1 to 2.2 atmospheric pressure is applied in a state in which the engaging portion 7a of the lock ring 7 and the flange projection 3b1 of the inner pot 3 are not engaged, the lid 2 is opened, and high temperature steam or heat Since there is a risk of water spouting, the engagement state is detected to ensure safety. In addition, 2.1-2.2 atmospheres pressure here is the pressure in the absolute pressure which measured the vacuum state on the basis of the pressure 0. FIG. The gauge pressure measured using the atmospheric pressure as a standard of pressure 0 is 1.1 to 1.2 atm. All subsequent statements regarding pressure are statements of pressure in absolute pressure.

  4 b shown in FIGS. 2, 3 and 6 is a pressure adjusting means. The pressure applied to the pressurizing space P is pressurized by the steam pressure of the water vapor generated by heating the food such as the food or the water contained in the pressurizing space P in the process of cooking. Since it is dangerous if pressure is applied too much, the pressure applied to the pressurizing space P is adjusted to be 2.1 to 2.2 atm.

When the pressure in the pressurized space P becomes 2.2 atmospheric pressure or more, a pressure regulating valve (not shown) of the pressure regulating means 4b is opened to release the pressure. Since the steam is discharged when the pressure is released, the discharged steam passes through the steam discharge portion 2c, which is a cartridge for steam discharge shown in FIG. 3, and is discharged from the cooker out of the exhaust port 2b shown in FIG. Ru. The steam discharger 2 c also has a function of suppressing the momentum of the steam discharged to the outside of the cooker by a labyrinth structure (not shown).

  4c shown in FIGS. 2 and 6 is a pressure state detection means. The pressure state detection means 4c will be described with reference to FIGS. FIG. 8 (a) is a cross-sectional view of the main part when the inner pan internal pressure detecting means of the cooking device according to Embodiment 1 of the present invention is lower than the atmospheric pressure, and FIG. FIG. 8C is a cross-sectional view of the main part when the inner pot internal pressure detection means of the cooking device according to Embodiment 1 of the invention is in the same state as atmospheric pressure; FIG. 8C is the cooking according to Embodiment 1 of the present invention It is principal part sectional drawing in case the internal pot internal pressure detection means of a vessel is the state to which predetermined | prescribed pressure higher than atmospheric pressure has been applied.

(Pressure condition detection means)
The pressure state detection means 4c detects the pressure state in the pressurizing space P, and is constituted by pressure state detection switches 41 and 42, a detection lever 43, a lever movable force transmission means 44, and a seal packing 45. The pressure state detection switch 41 is a switch that detects a state in which the pressure is higher than the atmospheric pressure. The pressure state detection switch 42 is a switch that detects a state in which the pressure is lower than the atmospheric pressure.

  The pressure state detection switches 41 and 42 are photosensors, and are configured to detect that the detection lever 43 moves and blocks the light of the photosensor. The detection lever 43 is operated by the lever power transmission means 44.

The lever power transmission means 44 is biased by the seal packing 40 formed of silicone rubber, and when the pressure in the pressurizing space P is in the same state as the atmospheric pressure, as shown in FIG. 43 is positioned so as not to block the light of either of the photosensors of the pressure state detection switches 41 and 42.

  When the pressure in the pressurized space P is higher than the atmospheric pressure by 1.05 atmospheres or more, as shown in FIG. 8C, the lever power transmission means 44 is pushed upward by the pressure. When the detection lever 43 operates upward by the lever power transmission means 44 pushed up to block the light of the photo sensor of the pressure state detection switch 41, the pressure in the pressurizing space P is higher than the atmospheric pressure. To detect The detection signal is transmitted to control means (not shown) via a connection line (not shown). This detection state is displayed by an LED (not shown) or the display means 25b.

  In the cooking apparatus according to the first embodiment of the present invention, the pressure is applied for cooking, and the pressure does not naturally return to the atmospheric pressure for pressure adjustment, that is, the pressurized space P becomes a closed space. Therefore, when the temperature in the pressure space P is lowered, the pressure in the pressure space P becomes negative pressure, and the lid 2 can not be opened.

  Therefore, when the pressure in the pressurizing space P becomes negative, as shown in FIG. 8A, the lever power transmitting means 44 is pulled to the pressurizing space P side, so the lever power transmitting means 44 is added. When the detection lever 43 operates downward to block the light of the photo sensor of the pressure state detection switch 42 by falling downward as the pressure space P side, it is detected that the pressure space P has a negative pressure. The detection signal is transmitted to a microcomputer, which is a control unit (not shown), via a connection line (not shown). This detection state is displayed by an LED (not shown) or the display means 25b.

In the negative pressure state, the control means operates the forcible opening means (not shown) to return the pressure of the pressurizing space P to the same state as the atmospheric pressure shown in FIG. 8 (b) and open the lid 2 Make it The forced opening means may be operated manually without the control unit.

  When the pressure in the pressurized space P is higher than the atmospheric pressure and a pressure of 1.05 atmospheres or more is applied, if the lid 2 is opened, high temperature, high pressure steam may be ejected and it is dangerous. Therefore, the lid 2 is provided with a safety device 45 shown in FIG. 7 that prevents the lid 2 from being opened in this state. The safety device 45 will be described with reference to FIGS. Fig.9 (a) is the perspective view which looked at the state which removed the shell part of the lid of the cooking device based on Embodiment 1 of this invention from the direction different from FIG. 7, FIG.9 (b) is a figure. 9 (a) is a cross-sectional view cut in the front-rear direction along a cutting line C-C shown in FIG. 9 (a), and FIG. 9 (c) is an enlarged view of a portion G shown in FIG.

(Safety device)
45 shown in FIG. 7 is a safety device. The safety device 45 has a safety device drive shaft 45a and a safety device movable part 45b. The safety device movable portion 45 b operates in conjunction with the rotation of the lock operation knob 6. Although FIG. 7 does not illustrate the lock operation knob 6, the lock ring turning lever 6b, which operates when the lock operation knob 6 is rotated, is in a locked state (the engaging portion 7a of the lock ring 7 and the flange of the inner pot 3) It is shown that the projecting portion 3b1 is in the engaged position.

When the lock operation knob 6 (not shown in FIG. 7) is rotated in the direction E shown in FIG. 7, that is, the direction for releasing the lock state from this state, the lock ring pivot lever 6b attached to the knob rotation portion 6a. However, the lock ring drive shaft 6c provided on the lock ring 7 is rotated in the E direction shown in FIG. 7, and the lock ring 7 is accordingly rotated in the E direction.

At this time, the lock ring pivot lever 6b moves the safety device drive shaft 45a provided on the safety device 45 in the direction of F shown in FIG. As a result, the safety device movable portion 45b also moves in the direction of F.

As described above, when a pressure of 1.05 atm or higher, which is higher than the atmospheric pressure, is applied to the pressurized space P, as shown in FIG. 8C, the lever power transmission means 44 is moved upward by the pressure. The detection lever 43 is moved upward by the lever power transmission means 44 pushed up and pushed up.

When the detection lever 43 is positioned at the upper side, in other words, when pressure of 1.05 atmospheric pressure or higher higher than the atmospheric pressure is applied to the pressurizing space P, the lock operation knob 6 is in the direction to release the lock state. When it is rotated, as shown in FIGS. 9B and 9C, the detection lever 43 and the safety device movable portion end 45c of the safety device movable portion 45b contact each other, and the safety device movable portion 45b further moves in the F direction. become unable. That is, as the safety device movable portion 45b can not move, the interlocking lock operation knob 6 can not be rotated.

Therefore, when the safety device 45 applies a pressure of 1.05 atmospheric pressure or more higher than the atmospheric pressure to the pressurizing space P, the lock operation knob 6 can not be rotated to the position for releasing the lock state, When in the pressurized state, the lid 2 can be opened to avoid the danger of high pressure steam and the like.

  In this case, the internal pressure is less than 1.05 atm in absolute pressure (consumption in the technical standards of the Consumer Product Safety Act) that the set value at which the lid 2 can not be opened is 1.05 atm or higher. In terms of product safety law for household use, the structure is such that the lid can not be opened unless the gauge pressure is less than 5.0 kilopascals).

Here, the gauge pressure of consumer product safety law is less than 5.0 kilopascals, because 1 atmospheric pressure is about 100.0 kilopascals in gauge pressure, 5.0 kilopascals is 0.05 atmospheres It becomes. Therefore, the absolute pressure is 1.05 atm, so the pressure less than 5.0 kilopascal and the absolute pressure less than 1.05 atm are the same pressure.

When the pressurized space P is in the same state as the atmospheric pressure or in the negative pressure state, the position of the detection lever 43 is lowered so as not to prevent the safety device movable part 45b from moving in the F direction. However, in the negative pressure state, even if it can be rotated to the position where the locked state is released, the forced opening means must be operated to return the pressure of the pressurizing space P to the same state as the atmospheric pressure. For example, the lid 2 can not be opened.

(Decompression means)
Next, the pressure reducing means 51 for returning the pressure of the pressurized space P pressurized to the atmospheric pressure will be described with reference to FIGS. 4 and 10 to 13. FIG. 10 (a) illustrates the operation of the pressure reducing means, showing the fully closed state of the steam valve by the steam valve opening and closing means, and FIG. 10 (b) illustrates the operation of the pressure reducing means. FIG. 11 illustrates the operation of the pressure reducing means, and FIG. 12 (a) illustrates the operation of the pressure reducing means. 12 (b) illustrates the operation of the pressure reducing means and is an enlarged view of the main part around the inclined portion of the slide member, and FIG. 12 (b) illustrates the operation of the pressure reducing means. (A) is a figure showing the state in the middle of opening of the steam valve by the steam valve opening-closing means of the cooking device which concerns on Embodiment 1 of this invention, FIG.13 (b) concerns on Embodiment 1 of this invention It is a principal part enlarged view of the step-like slope part periphery of the slide member of the steam valve opening-closing means of a cooking device.

  As shown in FIG. 4, the pressure reducing means 51 is provided on the lid 2. The operation of the pressure reducing means 51 will be described with reference to FIGS. In FIGS. 10 and 11, a slide member to be described later is different from the embodiment of the present invention.

  The pressure reducing means 51 is composed of a steam valve 51a and a steam valve opening / closing means 51b. The steam valve 51a includes a valve body 51a1, a valve receiving portion 51a2, a spring 51a3, and a guide member 51a4. The steam valve 51a closes the steam valve by pressing the valve body 51a1 against the valve receiving portion 51a2. The valve body 51a1 is held by the guide member 51a4. In the free state, the valve body 51a1 is biased by a spring 51a3 in a direction (upward direction) away from the valve receiving portion 51a2.

The steam valve opening / closing means 51b is composed of a slide member 61, an electric motor 51b2, a steam valve drive member 51b3, a slide contact portion 51b4, and a spring 51b5. When the control means (not shown) rotationally drives the motor 51b2 which is a stepping motor, the pinion gear 502 attached to the motor 51b rotates and the pinion gear 502 mounts the driving force of the motor 51b2 to the slide member 61. Transmit to The slide member 61 is moved in the H direction or the J direction shown in FIG. 10A by this driving force.

  FIG. 10A shows that the slide member 61 has moved in the J direction and has moved to the position where the steam valve 51a is closed. When the slide member 61 is moved to the position closing the steam valve 51a, the flat portion 71, which is the lowest position in the vertical direction of the slide member 61, is in contact with the slide contact portion 51b4 of the steam valve drive member 51b3. Since the slide contact portion 51b4 of the steam valve drive member 51b3 is in contact with the flat portion 71 located at the lowermost position in the vertical direction of the slide member 61, the steam valve drive member 51b3 also moves downward.

As the steam valve driving member 51b3 moves downward, the valve body 51a1 of the steam valve 51a also moves downward (L direction shown in FIG. 10A) and is pressed against the valve receiving portion 51a2, and the steam valve 51a is closed. It is in a state of being The force pressing the valve body 51a1 against the valve receiver 51a2 at this time is naturally a force stronger than the pressure of 1.1 to 1.2 atm. The biasing force of the spring 51a3 is set to be weaker than the force with which the valve body 51a1 is pressed against the valve receiving portion 51a2 by the slide member 61 via the steam valve drive member 51b3.

When cooking is performed with the steam valve 51a closed, a problem occurs in the pressure adjusting means, and the internal pressure in the pressurizing space P becomes higher than the pressure of 2.1 to 2.2 atm, for example, 2.45 atm. If the pressure exceeds the pressure, the valve body 51a1 pushes up the spring 51b5 provided on the steam valve opening / closing means 51b to discharge the steam and release the pressure. The vapor | steam discharged | emitted passes the vapor | steam discharge part 2c which is a cartridge for vapor | steam discharge shown in FIG. 3, and is discharged | emitted out of a cooking appliance from the exhaust port 2b shown in FIG.

The spring 51b5 is set to the same biasing force as, for example, 2.45 atm, which is higher than the pressure of 2.1 to 2.2 atm, and an abnormality such that the internal pressure in the pressure space P exceeds 2.45 atm. When it raises, it loses to the internal pressure in pressurization space P, and it is one of the safety devices which open valve element 51a1.

  FIG. 10B shows that the slide member 61 has moved in the H direction, and has moved to the position where the steam valve 51a has been opened. When the slide member 61 is moved to the position for opening the steam valve 51a, the flat portion 73, which is the uppermost position in the vertical direction of the slide member 61, is in contact with the slide contact portion 51b4 of the steam valve drive member 51b3. . Since the slide contact portion 51b4 of the steam valve drive member 51b3 is in contact with the flat portion 73 which is the uppermost position in the vertical direction of the slide member 61, the steam valve drive member 51b3 is also moved upward.

As the steam valve driving member 51b3 moves upward, the valve body 51a1 of the steam valve 51a also moves upward (K direction shown in FIG. 10A) and is separated from the valve receiving portion 51a2, and the steam valve 51a is opened. It is in a state of At this time, the valve body 51a1 is biased in a direction away from the valve receiving portion 51a2 by the biasing force of the spring 51a3.

  If the steam valve 51a is opened all at once, it is dangerous because the high temperature steam may be ejected from the exhaust port 2b, the steam valve opening / closing means 51b needs to gradually open the steam valve 51 by the control means .

In order to gradually open the steam valve 51, the slide member 61 has a flat portion 71 at the lowest position in the vertical direction of the slide member 61 and a flat portion 73 at the uppermost position in the vertical direction of the slide member 61. Between the two, an inclined portion 72 is provided.

A process in which the slide contact portion 51b4 of the steam valve driving member 51b3 moves from the flat portion 71 located at the lowermost position in the vertical direction of the slide member 61 to the flat portion 73 located at the uppermost position in the vertical direction of the slide member 61 Thus, as shown in FIGS. 12A and 12B, the slide contact portion 51b4 is in contact with the inclined portion 72 when the steam valve 51a is in the process of being opened.

  When the control means causes the motor 51b to rotate and moves the slide member 61 so that the steam valve 51a is gradually opened, the inclined portion 72 is effective, but the operation of the pressure reducing means is illustrated in FIGS. In the case of a linear and gentle inclination as in the case of the inclined portion 72, the valve body 51a1 is at the contact point between the slide contact portion 51b4 and the inclined portion 72 by the internal pressure of 2.1 to 2.2 atmospheric pressure in the pressurizing space P. Because stress is generated both in the direction of pushing up and in the direction of movement of the steam valve drive member 51b3, when the torque of the motor 51b2 is insufficient, the drive force of the motor 51b2 can not be transmitted stably to the slide member 61 and the slide member 61 Therefore, the operation of the steam valve drive member 51b3 can not be controlled either. As a result, the steam valve 51 may not be opened stably.

(Inclination portion of the slide member according to the first embodiment of the present invention)
Therefore, in the first embodiment of the present invention, as shown in FIGS. 13A and 13B, the flat portion 71 located at the lowest position in the vertical direction of the slide member 51b1 and the uppermost in the vertical direction of the slide member 51b1. The inclined part provided between the flat part 73 which becomes the position of (1) is formed in steps by a plurality of gradients.

The inclined portion of the slide member 51b1 according to the first embodiment of the present invention is formed of a plurality of inclined portions, a first inclined portion 51b11, a second inclined portion 51b12, and a third inclined portion 51b13, as shown in FIG. It is done. The first slope 51b11, the second slope 51b12, and the third slope 51b13 have the same slope (first slope).

Also. As shown in FIG. 13 (b), a fourth inclined portion 51 b 14 is provided between the first inclined portion 51 b 11 and the second inclined portion 51 b 12, and a fifth is provided between the second inclined portion 51 b 12 and the third inclined portion 51 b 13. The inclined portion 51b15 is provided. The fourth slope 51b14 and the fifth slope 51b15 have the same slope (second slope), and the slope is gentler than the slopes of the first slope 51b11, the second slope 51b12, and the third slope 51b13. It is.

  A fourth inclined portion 51b14 is provided between the first inclined portion 51b11 and the second inclined portion 51b12, and a fifth inclined portion 51b15 is provided between the second inclined portion 51b12 and the third inclined portion 51b13. The inclined portion of the slide member according to the first embodiment is formed in a step shape with two types of gradients.

  By making the inclined portion of the slide member 51b1 stepwise, the slide contact portion 51b4 of the steam valve drive member 51b3 alternately contacts the first gradient and the second gradient to step the operation of the valve 51a1. It can be done. By operating the valve body 51a1 stepwise, the steam can be discharged stepwise and safely depressurized without the high temperature and high pressure steam spouting all at once.

Further, by providing the fourth inclined portion 51b14 and the fifth inclined portion 51b15, which are the second inclination with a gentle inclination, the valve body 51a1 is in the pressurizing space P at the fourth inclined portion 51b14 and the fifth inclined portion 51b15. The internal pressure of 2.1 to 2.2 atm can suppress the force that can be pushed up. Therefore, a stepping motor with a small torque can be used as the electric motor 51b2 with respect to the linear and gentle inclined portion, and the cost can be suppressed.

In the first embodiment of the present invention, the fourth inclined portion 51b14 and the fifth inclined portion 51b15 have a gentle second inclination, but a direction perpendicular to the operation direction of the valve 51a1, for example, the valve 51a1. If the movement direction is vertical, it may be a flat part in the horizontal direction, and the operation of the valve body 51a1 can be made stepwise as in the case of the second gradient with a gentle inclination. By operating the valve body 51a1 stepwise, steam can be discharged stepwise and safely depressurized without the high temperature and high pressure steam spouting all at once.

  As for the rotational drive of the electric motor 51b2, in the first embodiment of the present invention, the inclined portion of the slide member is formed stepwise even if operated continuously by the control means, so the valve body 51a1 is stepped as described above It is possible to safely operate by discharging the steam in stages without high temperature steam being jetted out at a stroke, but the slide contact portion 51b4 of the steam valve drive member 51b3 may be released from the first inclined portion 51b11. If the motor 51b2 is temporarily stopped at the timing when it moves to the four inclined portions 51b14 and the timing when it moves from the second inclined portion 51b12 to the fifth inclined portion 51b15, the valve body 51a1 operates in stages more reliably, and high temperature and high pressure The steam can be discharged stepwise and safely depressurized without the steam rushing out.

Second Embodiment
The cooking device according to the second embodiment of the present invention differs from the cooking device according to the first embodiment of the present invention in the configuration of the inclined portion of the slide member. The other configuration is the same as that of the cooker according to the first embodiment of the present invention. Therefore, here, the configuration of the inclined portion of the slide member different from the heating cooker according to the first embodiment of the present invention will be described with reference to FIG. 14, and the other description will be omitted.
Fig.14 (a) is a figure showing the state in the middle of opening of the steam valve by the steam valve opening-closing means of the cooking device which concerns on Embodiment 2 of this invention, FIG.14 (b) is Embodiment 2 of this invention It is the principal part enlarged view of the stair-like inclined part periphery of the slide member of the steam valve opening-closing means of a cooking device which concerns on b.

  In the second embodiment of the present invention, as shown in FIGS. 14A and 14B, the flat portion 71 located at the lowest position in the vertical direction of the slide member 81 and the uppermost position in the vertical direction of the slide member 81. The sloped portion provided between the flat portion 73 and the flat portion 73 is formed stepwise with a plurality of gradients.

The inclined portion of the slide member 81 according to the second embodiment of the present invention is formed of a plurality of inclined portions, a first inclined portion 81a1, a second inclined portion 81a2 and a third inclined portion 81a3 as shown in FIG. 14 (b). It is done. The first inclined portion 81a1, the second inclined portion 81a2, and the third inclined portion 81a3 have the same slope (first slope).

Also. As shown in FIG. 14 (b), a fourth inclined portion 81 a 4 is provided between the first inclined portion 81 a 1 and the second inclined portion 81 a 2, and a fifth is provided between the second inclined portion 81 a 2 and the third inclined portion 81 a 3. The inclined portion 81a5 is provided. The fourth slope portion 81a4 and the fifth slope portion 81a5 have the same slope (third slope), and the slope is gentler than the slopes of the first slope portion 81a1, the second slope portion 81a2 and the third slope portion 81a3, And reverse gradient.

  A fourth inclined portion 81a4 is provided between the first inclined portion 81a1 and the second inclined portion 81a2, and a fifth inclined portion 81a5 is provided between the second inclined portion 81a2 and the third inclined portion 81a3. The inclined portion of the slide member according to the second embodiment is different in inclination, and is formed in a step shape with two types of reverse inclination.

  The slide abutment portion 51b4 of the steam valve drive member 51b3 has the first slope and the third slope by forming the sloped portion of the slide member 81 in a step shape with different slopes and two types of reverse slopes. By alternately contacting these, as in the first embodiment of the present invention, the operation of the valve body 51a1 can be made stepwise. By operating the valve body 51a1 stepwise, steam can be discharged stepwise and safely depressurized without the high temperature and high pressure steam spouting all at once.

  D rotation center, P pressure space, 1 main body, 1a inner pot storage portion, 1b hinge portion, 1c lid open button, 1d latch, 1e display portion, 1f operation button, 2 lid, 2a locking portion, 2b Exhaust port, 2c steam discharge portion, 3 inner pot, 3a handle, 3b flange portion, 3b1 flange extension portion, 3c body portion, 3d bottom portion, 4 inner lid, 4a inner lid fixing means, 4b pressure adjusting means, 4c pressure state Detection means, 5 seal member, 6 lock operation knob, 6a knob rotation portion, 6b lock ring pivot lever, 6c lock ring drive shaft, 7 lock ring, 7a engagement portion, 7b notch portion, 8 temperature detection means, 11 Heating means, 12 heating means, 21 rotation shaft, 22 hinge springs, 23 substrates, 24 air blowing means, 25 operation display boards, 25a operation means, 25b display means, 31 b Detection means, 40 seal packing, 41 pressure state detection switch, 42 pressure state detection switch, 43 detection lever, 44 lever movable force transmission means, 45 safety device, 45a safety device drive shaft, 45b safety device movable part, 45c safety device Movable part end, 51 pressure reducing means, 51a steam valve, 51a1 valve body, 51a2 valve receiving portion, 51a3 spring, guide member 51a4, 51b steam valve opening / closing means, 51b1 slide member, 51b11 first inclined portion, 51b12 second inclined portion 51b13 third inclined portion 51b14 fourth inclined portion 51b15 fifth inclined portion 51b2 motor (stepping motor) 51b3 steam valve driving member 51b4 slide contact portion 51b5 spring 61 slide member 71 flat portion 72 Slope, 73 flats, 81 slices Dew members, 81a1 first inclined portion, 81a2 second inclined portion, 81a3 third inclined portion, 81a4 fourth inclined portion, 81a5 fifth inclined portion, 501 rack gear, 502 pinion gear, 100 cooker.

Claims (5)

A body having an opening at the top,
An inner pot having a bottom and having an opening at its upper end, which is accommodated in the main body so as to be able to be taken in and out of the main body opening;
A lid rotatably mounted on the main body and covering an upper portion of the main body;
An inner lid provided on the lid, having a seal member, and allowing the seal member to abut on the entire circumference of the upper end opening of the inner pot to sealably cover the inner pot;
Locking means for holding the sealed state of the inner pot and the inner lid even when a predetermined pressure higher than atmospheric pressure is applied to the inner space sealed by the inner pot and the inner lid;
(Pressure adjusting means provided on the lid and adjusting to the predetermined pressure)
Pressure reducing means for returning from the predetermined pressure applied to the inner space sealed by the inner pot and the inner lid to the same pressure as the atmospheric pressure;
And heating means provided in the main body to heat the inner pot,
The pressure reducing means opens the steam valve and discharges the steam to reduce the pressure, and has steam valve opening / closing means for operating the steam valve in the vertical direction by operating in the left-right direction,
The steam valve opening and closing means includes a slide member provided with an inclined portion for transmitting an operating force in the left-right direction in the vertical direction, and the steam valve provided with a slide contact portion abutting on the inclined portion. And a steam valve drive member for opening or closing operation,
The said inclined part is the cooking device currently formed in step shape by several gradients.   The said inclined part of the said slide member is formed in the step shape which provided alternately two or more 1st gradients and 2nd gradients whose inclination is gentler than said 1st gradient. Cooker.   The cooker according to claim 1, wherein the inclined portion of the slide member is formed in a step shape in which a plurality of first gradients and a plane orthogonal to the operating direction of the steam valve are alternately provided.   The inclined portion of the slide member has a plurality of first gradients and a plurality of third gradients which are gentler than the first gradients and are inclined in the opposite direction to the first gradients. The cooker according to claim 1, wherein the cooker is formed in a stepped shape. An electric motor generating power for operating the slide member left and right;
And control means for controlling the motor.
When the control means drives the electric motor to move the slide member in the left-right direction, the slide contact portion of the steam valve drive member moves while contacting along the step-like inclined portion. Opening or closing the steam valve,
The control means suspends the drive of the electric motor when the slide contact portion passes the first gradient of the inclined portion and deviates from the first gradient. The cooker of a clause.

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