JP2019030568A - Cooker - Google Patents

Abstract

To provide a cooker capable of holding a pressure space safely.SOLUTION: A cooker comprises: a main body having an opening on a top part; an inner pot which is stored in the main body so as to be taken out from the opening of the main body and taken in the main body, which is formed into a cylindrical state with a bottom part and has an opening on an upper end; a lid body which is rotatably provided on the main body and covers an upper part of the main body; an inner lid which has a seal member, which brings the seal member into contact with whole periphery of the upper end opening of the inner pot, for covering the inner pot so as to be sealed, the inner lid being attached to the lid body; lock means for holding a contact state between the inner pot and the seal member of the inner lid, and making a seal state of the inner pot and the inner lid; pressure reduction means for returning a prescribed pressure applied to the internal space sealed by the inner pot and the inner lid, to a pressure same to an air pressure; heating means provided in the main body and heating the inner pot; and control means for controlling the heating means. The lock means has a lock ring, the inner pot has a flange protrusion part, and by engagement of the lock ring and the flange protrusion part, the inner pot and the inner lid can be made in a seal state.SELECTED DRAWING: Figure 2

Description

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

  2. Description of the Related Art Conventionally, a cooking device is known that uses water vapor generated by heating an object to be cooked contained in a pan in a cooking device and applies a pressure higher than atmospheric pressure in the pan (for example, , See Patent Document 1).

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

  Such a conventional cooker constitutes a pressure space with an inner pot and an inner lid, but it is difficult to suppress the pressure and there is a problem in safety. Further, there is a problem that the structure for holding the pressure space against the pressure becomes complicated.

  This invention is made | formed in order to solve said subject, and it aims at providing the cooker which can hold | maintain a pressure space safely.

  The cooker according to the present invention includes a main body having an opening in the upper part, a cylindrical shape having a bottom part, which is accommodated in the main body so as to be able to be inserted and removed from the main body opening, and an inner pan having an opening at the upper end, and the main body is rotated. An inner lid attached to the lid that covers the inner pan so that the inner pan can be sealed by contacting the entire circumference of the upper end opening of the inner pan so that the inner pan can be sealed. A lock means for maintaining the contact state of the lid, the inner pan and the inner lid seal member, and sealing the inner pan and the inner lid, and a predetermined pressure applied to the inner space sealed by the inner pan and the inner lid. A pressure reducing means for returning to the same pressure as the atmospheric pressure, a heating means provided in the main body for heating the inner pan, and a control means for controlling the heating means, the locking means having a lock ring, The hook has a flange overhang, and the lock ring and the flange overhang are engaged. It is to the inner pot and the inner lid and the sealing state in Rukoto.

  According to the present invention, there is provided locking means for maintaining the contact state between the sealing member of the inner pot and the inner lid and sealing the inner pot and the inner lid, the locking means has the lock ring, and the inner hook is the flange. Since it has an overhanging part and the inner ring and the inner lid are sealed by engaging the lock ring and the flange overhanging part, the pressure space can be safely held and pressure cooking can be performed with peace of mind. It becomes like this.

1 is an overall perspective view of a cooking device according to Embodiment 1 of the present invention. It is a whole perspective view in the state where the lid of the cooking appliance concerning Embodiment 1 of the present invention was opened. It is sectional drawing which cut | disconnected the cooking appliance which concerns on Embodiment 1 of this invention in the front-back direction by the cutting line AA shown in FIG. It is sectional drawing which cut | disconnected the cooking appliance which concerns on Embodiment 1 of this invention in the left-right direction by the cutting line BB shown in FIG. It is a perspective view of the inner pot accommodated in the cooking device which concerns on Embodiment 1 of this invention. It is the figure which looked at the cover body of the cooking appliance which concerns on Embodiment 1 of this invention from the surface side facing the upper end opening side of an inner pot. It is a perspective view in the state where an outline part was removed from a lid of a cooking appliance concerning Embodiment 1 of the present invention. (A) Main part sectional drawing when the inner-pan internal pressure detection means of the cooking appliance which concerns on Embodiment 1 of this invention is a state lower than atmospheric pressure, (b) It concerns on Embodiment 1 of this invention Cross-sectional view of the main part when the inner pan pressure detection means of the cooking device is in the same state as the atmospheric pressure, (c) the inner pan pressure detection means of the cooking device according to Embodiment 1 of the present invention is the atmospheric pressure It is principal part sectional drawing when it is in the state where the predetermined pressure higher than is applied. (A) The perspective view which looked at the state which removed the outer shell part from the direction different from FIG. 7 of the cover of the cooking appliance which concerns on Embodiment 1 of this invention, (b) The cutting line shown to Fig.9 (a) Sectional drawing cut | disconnected in the front-back direction by CC, (c) It is an enlarged view of the G section shown to FIG.9 (b). It is the state figure which removed the lock operation knob and the lock ring rotation lever, and exposed the inner lid attachment forgetting prevention means. (A) Partial enlarged view of the P portion shown in FIG. 3, (b) Single part view of the inner cover attachment forgetting prevention means movable part, (c) Movement of the inner lid attachment forgetting prevention means when the inner lid is attached (D) Schematic state diagram of the movable portion of the inner lid attachment forgetting prevention means when the inner lid is not attached, (d) The movable portion of the inner lid attachment forgetting prevention means as viewed from the P direction. FIG. (A) A diagram illustrating the operation of the decompression means and illustrating the fully closed state of the steam valve by the steam valve opening / closing means, (b) a diagram illustrating the operation of the decompression means, the fully open state of the steam valve by the steam valve opening / closing means. FIG. It is a perspective view which shows the structure of the steam valve opening / closing means for operating the principle of the decompression means. (A) A diagram for explaining the operation of the decompression means, showing a state in the middle of opening of the steam valve by the steam valve opening / closing means, (b) for explaining the operation of the decompression means, and a main part around the inclined portion of the slide member It is an enlarged view. (A) The figure showing the state in the middle of opening of the steam valve by the steam valve opening-and-closing means of the cooking appliance which concerns on Embodiment 1 of this invention, (b) The steam valve opening and closing of the cooking appliance which concerns on Embodiment 1 of this invention It is a principal part enlarged view around the step-like inclination part of the slide member of a means.

  Embodiments of the present invention will be described below with reference to the drawings. In the drawings, the same or corresponding parts are denoted by the same reference numerals, and the description thereof is omitted or simplified as appropriate. In addition, the shape, size, arrangement, and the like of the configuration described in each drawing can be changed as appropriate within the scope of the present invention.

Embodiment 1 FIG.
[Schematic configuration of the entire cooker]
1 is an overall perspective view of a cooking device according to Embodiment 1 of the present invention, FIG. 2 is an overall perspective view of the cooking device according to Embodiment 1 of the present invention with the lid opened, and FIG. Sectional drawing which cut | disconnected the cooker which concerns on Embodiment 1 of invention in the front-back direction by the cutting line AA shown in FIG. 1, FIG. 4 shows the cooker which concerns on Embodiment 1 of this invention in FIG. Sectional drawing cut | disconnected in the left-right direction by BB, FIG. 5 is a perspective view of the inner pot accommodated in the cooking appliance which concerns on Embodiment 1 of this invention, FIG. 6 shows the cooking appliance which concerns on Embodiment 1 of this invention. FIG. 7 is a perspective view of a state in which the outer parts are removed from the lid of the cooker according to the first embodiment of the present invention. 8 (a) is a cross-sectional view of the main part when the pressure detecting means in the inner pan 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 pressure detection means in the inner pan of the cooking device according to the first embodiment is the same as the atmospheric pressure, and FIG. 8C is the cooking device according to the first embodiment of the present invention. FIG. 9 (a) is a cross-sectional view of the main part when the inner pot internal pressure detection means is in a state where a predetermined pressure higher than the atmospheric pressure is applied, and FIG. 9 (a) shows the cooking device according to the first embodiment of the present invention. The perspective view which looked at the state which removed the shell part from the direction different from FIG. 7, and FIG.9 (b) is sectional drawing cut | disconnected in the front-back direction by the cutting line CC shown to Fig.9 (a) FIG. 9 (c) is an enlarged view of the portion G shown in FIG. 9 (b), and FIG. 10 is a state diagram in which the lock operation knob and the lock ring turning lever are removed to expose the inner lid forgetting prevention means. 11 (a) is a partially enlarged view of the P portion shown in FIG. 3, FIG. 11 (b) is a single component diagram of the movable portion for preventing inner lid attachment forgetting, and FIG. FIG. 11D is a schematic state diagram of the movable part of the inner lid attachment forgetting prevention means when the inner lid is not attached, FIG. 11E is a schematic state diagram of the movable portion of the inner lid attachment forgetting prevention means viewed from the P direction.

  As shown in FIGS. 1 to 4, a cooking device 100 according to Embodiment 1 of the present invention is a cooking device that cooks an object to be cooked at a pressure higher than atmospheric pressure, and includes a main body 1 and a lid 2. It is configured. The main body 1 has an open top surface and includes an inner pot accommodating portion 1a (see FIG. 3) in the opened interior.

  In the inner pot accommodating portion 1a, a bottomed cylindrical inner pot 3 having an open upper surface as shown in FIG. 5 is accommodated in a removable manner. The inner pot 3 is a cooking container for storing the food to be cooked. When the heating means is an induction heating type, it is generally considered to be conductive and have a high pressure resistance. A clad material is formed by laminating a plurality of materials such as copper. However, it is not limited to metal, and may be formed of a carbon material having conductivity, a clay pot having a conductive material in part, or the like as long as it has a high breakdown voltage.

[Inner pot]
As shown in FIG. 5, the inner pot 3 has an open top surface, and has a cylindrical shape having a bottom 3d and a body 3c. A flange portion 3b extending from the inner pot inner side toward the outer side is provided on the entire upper end of the opening. The flange portion 3b is provided with a plurality of flange protruding portions 3b1 extending further outward from the end of the flange portion 3b at equal intervals.

  A handle 3a is provided near the upper surface opening outside the body portion 3d. The handle 3a is held when the inner pan 3 is taken in and out of the main body 1, and is formed of resin. Moreover, the handle 3a is functioning also as positioning so that the inner pot 3 may not rotate, when the inner pot 3 is accommodated in the inner pot accommodating part 1a. The necessity to prevent the inner pot 3 from rotating will be described later.

[Main unit]
Inside the main body 1, heating means 11 and 12 are provided on the outside of the inner pot accommodating portion 1 a for heating the inner pot 3, that is, for heating the cooking object accommodated in the inner pot 3. The heating means 11 is composed of, for example, an induction heating coil 11a, 11b, 11c (hereinafter collectively referred to as the heating means 11) that is an electromagnetic induction heating source. 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 composed of, for example, a radiation type heat source. As shown in FIG. 3, the heating means 12 is provided at a position corresponding to the body portion 3 c (see FIG. 5) of the inner pot 3. 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 radiant heating source. However, the present invention is not limited to this, and vice versa. Both the heating means 11 and the heating means 12 may be an electromagnetic induction heating source or a radiation heating source.

  In addition, a substrate 23 for driving the heating means 11, the heating means 12, and the like is provided inside the main body 1. Commercial power is supplied to the substrate 23 by a power cord (not shown). Further, the main body 1 is provided with a blowing means 24 for cooling the substrate 23 and the heating means 11.

  Then, an operation display board 25 equipped with operation means 25a, display means 25b, and notification means (not shown) is provided inside the main body 1. The notifying means here is to notify by sound such as a speaker or a buzzer. However, the notification means is not limited to the voice, but can be notified by displaying on the display means 25b.

The operation means 25a is a mechanical switch, and is input by pressing an operation button 1f provided on the outside of the main body shown in FIG. 2, and a control means (not shown) controls a cooking menu, cooking conditions, cooking time by this input signal. Etc. are set. In the first embodiment of the present invention, the operation means 25a is a mechanical switch. However, the operation means 25a is not limited to this and may be a touch switch type that detects an input by a change in capacitance.

  The display means 25b is a liquid crystal display device, and displays the cooking menu, cooking conditions, cooking time, etc. set by the operating means 25a in characters, numbers, figures and the like. The display content of the display means 25b can be visually recognized from the outside by a window-shaped display portion 1e that is provided on the outer side of the main body shown in FIG. In the first embodiment of the present invention, the display means 25b is a liquid crystal display device, but the present invention is not limited to this, and a 7-segment LED or the like may be used.

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

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

[Lid]
The lid 2 is rotatably attached to a hinge portion 1b provided on the upper surface of the main body. As shown in FIG. 3, the hinge portion 1 b includes a rotating shaft 21 and a hinge spring 22. The lid body 2 rotates about the axis of the rotation shaft 21.

  The hinge spring 22 is urged in the direction in which the lid 2 is opened. When the lid 2 urged in the opening direction by the hinge spring 22 is manually rotated against the urging force of the hinge spring 22, the engagement provided at the end opposite to the side attached to the hinge 1 b. The stopper 2 a is locked by being related to a 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.

  When the lid 2 in a state where the upper surface opening of the main body 1 is closed, when the lid opening button 1c provided on the outer side of the main body shown in FIGS. 2 and 3 is pressed, the latch 1d moves away from the locking portion 2a. The stop state is released, and the biasing force of the hinge spring 22 causes the pivot shaft 21 to rotate about the axis of the pivot shaft 21 in the opening direction. However, since the hinge spring 22 does not have an urging force to rotate the lid 2 to the fully open position, the hinge spring 22 is manually rotated to the fully open position.

If the biasing force of the hinge spring 22 is increased to the extent that the lid body 2 is rotated to the fully opened position, the lid body 2 will be opened vigorously at the moment when the locked state is released, which is dangerous. It is not good for safety and usability, such as strong resistance when closing, poor usability, and the food stored in the inner pot 3 spills due to the reaction when the lid 2 is pivoted to the fully open position. It will have an effect. Therefore, the hinge spring 22 is not given an urging force enough to rotate the lid 2 to the fully open position.

  An inner lid 4 is provided on the side of the lid 2 that faces 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 body 2 by inner lid fixing means 4a shown in FIGS. The inner lid fixing means 4a is fixed with, for example, a screw.

  The inner lid 4 is provided with a sealing 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 from the viewpoints 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 3b provided on the entire upper end of the opening of the inner pot 3 on the entire periphery.

  If the inner lid 4 is not attached, the opening of the inner pot 3 cannot be closed tightly and cannot be used as a cooker. Therefore, a mechanism for checking that the inner lid 4 is attached is provided, and the inner lid forgetting prevention means 9 shown in FIG.

  A part of the inner lid attachment forgetting prevention means 9 can be seen when the knob rotating portion 6a of the lock ring rotating lever 6b is removed as shown in FIG. In the assembled state, as shown in FIG. 11 (a), a part of the inner lid attachment forgetting prevention means 9 is housed in the knob rotating portion 6a of the lock ring rotating lever 6b together with the urging means 13, and is locked. The ring rotation lever 6b rotates together with the rotation of the lock operation knob 6 fixed to the knob rotation portion 6a of the ring operation lever 6b by a lock operation knob mounting screw 6d. Rotating is an inner lid attachment forgetting prevention means movable portion 9a shown in FIG. 11 (b).

However, it does not rotate in any state, and does not rotate when the inner lid 4 is not attached, that is, the lock operation knob 6 cannot be operated when the inner lid 4 is not attached. It has become.

The structure of the inner lid attachment forgetting prevention means 9 will be described with reference to FIG. 11. First, the inner lid attachment forgetting prevention means movable portion 9a shown in FIG. 11 (b) includes a pin-shaped inner lid detection portion 91, four rotation restraining ribs. 92a, 92b, 92c, and 92d.

  As shown in FIG. 11A, when the inner lid 4 is attached to the inner lid detector 91 of the inner lid attachment forgetting prevention means movable portion 9a, the tip of the inner lid detector 91 is connected to the inner lid 4 as shown in FIG. In contact. When the inner lid 4 is attached at a predetermined position, as shown in FIG. 11C, the inner lid detecting portion 91 of the inner lid attachment forgetting prevention means movable portion 9a is pushed up by the inner lid 4. Yes. At this time, the urging means 13 is compressed.

Further, the rotation restraining ribs 92 a, 92 b, 92 c, and 92 d have moved upward to a position that deviates from the side wall of the groove 10. When the rotation restraining ribs 92a, 92b, 92c, and 92d are thus moved upward, the lock operation knob 6 can be operated.

  As shown in FIG. 11 (d), when the inner lid 4 is not attached, the inner lid detector 91 of the movable lid 9a is not pushed up by the inner lid 4 when the inner lid attachment forgetting prevention means 9a is pushed up, and the inner lid 4 is forgotten. Conversely, the prevention means movable portion 9a is urged downward by the urging means 13. Since the inner cover attachment forgetting prevention means movable portion 9a is biased downward, the rotation restraining ribs 92a, 92b, 92c, and 92d are moved downward to a position that fits in the side wall of the groove portion 10.

When the rotation restraining ribs 92a, 92b, 92c, and 92d move downward to a position that fits in the side wall of the groove 10, the rotation restraining ribs 92a, 92b, 92c, and 92d are cross-shaped or plus as shown in FIG. When the inner lid attachment forgetting prevention means movable portion 9a is rotated, the rotation restraining ribs 92a, 92b, 92c, and 92d come into contact with the side walls of the groove portion 10 respectively. It has come to inhibit.

That is, if the inner lid 4 is not attached, the rotation restraining ribs 92a, 92b, 92c, 92d provided on the inner lid attachment forgetting prevention means movable portion 9a of the inner lid attachment forgetting prevention means 9 are cross-shaped or plus-shaped. Since it comes into contact with the side wall of the groove portion 10 and obstructs the rotation of the inner lid attachment forgetting prevention means movable portion 9a, the lock operation knob 6 that rotates together cannot be operated. Therefore, if the inner lid 4 is not attached, the lock operation knob 6 cannot be operated, so that forgetting to attach the inner lid 4 can be prevented.

When the latching portion 2a of the lid body 2 is latched and latched by the latch 1d on the upper surface of the main body 1, and the lid body 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. Touch to be pressed.

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

  During cooking, since pressure of 2.1 to 2.2 atmospheres is applied to the pressurized space P, the locking portion 2a of the lid 2 is only locked by the latch 1d on the upper surface of the main body 1. Then, it cannot resist the pressure of 2.1 to 2.2 atmospheres applied to the pressurizing space P, and the lid 2 is opened. Therefore, the structure which hold | maintains the obstruction | occlusion state of the upper surface opening of the inner pot 3 by the inner lid 4 mechanically is provided so that the pressurization space P can be ensured even if a pressure is applied during cooking.

In addition, 2.1-2.2 atmospheres here are the pressure in the absolute pressure which measured the vacuum state on the basis of the pressure of 0. The gauge pressure measured with the atmospheric pressure as the reference of 0 pressure is 1.1 to 1.2 atmospheres. All the descriptions relating to the atmospheric pressure after this are the pressures in absolute pressure.

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

  A notch 7b is 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 flange overhanging portions 3 b 1 of the inner pot 3. Further, the number of engaging portions 7a and the number of notched portions 7b are the same.

  The lock ring 7 is supported by the lid 2 so as to be rotatable about a rotation center D shown in FIG. The lock ring 7 is rotated 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, but, for example, 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 1a of the main body 1 with its position determined so as not to rotate. The reason for determining the position of the inner pot 3 is to prevent the positional relationship between the flange projecting portion 3b1 of the inner pot 3 and the engaging portion 7a of the lock ring 7 from changing.

  When the lock ring 7 and the inner pan 3 are overlapped in a plan view (not shown), the flange overhanging portion 3b1 of the inner pan 3 is positioned at the notch portion 7b of the lock ring 7, That is, the engagement portion 7a of the lock ring 7 uses the position of the lock operation knob 6 when the flange portion 3b without the flange projecting portion 3b1 of the inner pot 3 is positioned 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 latching portion 2a of the lid 2 is latched by 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 engagement of the lock ring 7 as shown in FIG. The part 7a is provided so as to be lower in the vertical direction than the flange overhanging part 3b1 of the inner pot 3.

  As described above, when the lock operation knob 6 is at the reference position, the lid 2 can be opened and closed, and the engaging portion 7a of the lock ring 7 is connected to the flange overhanging portion 3b1 of the inner pot 3. In the position of the flange part 3b which does not exist, it comes down in the up-down direction rather than the flange overhang | projection part 3b1 of the inner pot 3. FIG.

When the engaging portion 7a of the lock ring 7 is located below the flange protruding portion 3b1 of the inner pot 3 in the vertical direction at the position of the flange portion 3b where the flange protruding portion 3b1 of the inner pot 3 is not present, the lock operation knob 6 When the lock ring 7 is rotated by rotating the lock ring 7, the engagement portion 7 a of the lock ring 7 rotates so as to enter under the flange protruding portion 3 b 1 of the inner pot 3.

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

Further, the engaging portion 7a of the lock ring 7 is engaged so as to overlap with the flange overhanging portion 3b1 of the inner pot 3, and at this time, the seal member 5 is engaged with the flange portion 3b of the inner pot 3. Pressed and in contact.

  By rotating the lock operation knob 6 and rotating the lock ring 7 to a position where the flange protruding portion 3b1 of the inner pot 3 and the engaging portion 7a of the lock ring 7 are in contact with each other, 2. Even if a pressure of 1 to 2.2 atm is applied, the seal member 5 is in contact with the flange portion 3b of the inner pot 3 so that it is pressed against the pressurizing space P from where the seal member 5 is in contact. Pressure does not escape. Moreover, since the engagement part 7a of the lock ring 7 and the flange overhang | projection part 3b1 of the inner pot 3 are engaged so that it may overlap, without losing the pressure of 2.1-2.2 atmospheres applied to the pressurization space P The closed state of the lid 2 can be maintained.

  Thus, since the engagement part 7a of the lock ring 7 and the flange overhang | projection part 3b1 of the inner pot 3 engage, the closed state of the cover body 2 can be maintained, Therefore The engagement part 7a of the lock ring 7 and the inner pot 3 The flange overhanging portion 3b1 serves as a locking means for maintaining the closed state of the lid 2.

In order to engage the engagement part 7a of the lock ring 7 and the flange overhanging part 3b1 of the inner pot 3 so as to be surely overlapped, the inner pot 3 does not rotate to the inner pot accommodating part 1a of the main body 1 as described above. Positioned and accommodated. This is because the positional relationship between the flange overhanging portion 3b1 of the inner pot 3 and the engaging portion 7a of the lock ring 7 is not changed by determining the position of the inner pot 3.

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

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

When the signal that detects the locked state is transmitted to the control means, the control means determines that the lock is in the locked state. In other words, the seal member 5 is pressed against the flange portion 3b of the inner pot 3 and is in contact. Judgment and operation of starting cooking can be performed.

In addition, when the control means determines that the seal member 5 is in a state of being pressed against and in contact with the flange portion 3b of the inner pot 3 (locked state), the heating means 11 and the heating means 12 are energized. It has become. Further, the control means displays on the display means 25b that it is locked. At this time, the notification means notifies the locked state according to the display.

When pressure of 2.1 to 2.2 atm is applied in a state where the engaging portion 7a of the lock ring 7 and the flange protruding portion 3b1 of the inner pot 3 are not engaged, the lid body 2 is opened, and high temperature steam or heat Since there is a danger of water spouting, the engagement state is detected to ensure safety.

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

When the pressure in the pressurizing space P becomes 2.2 atm or more, a pressure regulating valve (not shown) of the pressure adjusting 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 section 2c which is a cartridge for discharging steam shown in FIG. 3, and is discharged out of the cooker from the exhaust port 2b shown in FIG. The The steam discharge part 2c also has a function of suppressing the momentum of steam discharged outside the cooker by a labyrinth structure (not shown).

  4c shown in FIGS. 2 and 6 is a pressure state detecting means. The pressure state detection means 4c will be described with reference to FIGS.

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

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

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

  When the pressure in the pressurized space P is 1.05 atm or higher, which is higher than the atmospheric pressure, the lever power transmission means 44 is pushed upward by the pressure as shown in FIG. When the detection lever 43 is moved upward by the pushed lever power transmission means 44 and the light of the photo sensor of the pressure state detection switch 41 is blocked, the pressure in the pressurizing space P is higher than the atmospheric pressure. Is detected. This detection signal is transmitted to a control means (not shown) via a connection line (not shown). This detection state is displayed by an LED (not shown) or display means 25b.

  In the cooker according to the first embodiment of the present invention, the one configured to apply pressure and cook does not naturally return to atmospheric pressure in order to adjust the pressure, that is, the pressurized space P is a sealed space. Therefore, when the temperature in the pressurizing space P decreases, the inside of the pressurizing space P becomes negative pressure, and the lid 2 cannot be opened.

  Therefore, when the pressure in the pressurizing space P becomes negative, the lever power transmission means 44 is pulled toward the pressurizing space P as shown in FIG. When the detection lever 43 moves downward by moving downward in the pressure space P side and blocks the light of the photo sensor of the pressure state detection switch 42, it is detected that the pressure space P is under negative pressure. This detection signal is transmitted to a microcomputer as a control unit (not shown) via a connection line (not shown). This detection state is displayed by an LED (not shown) or display means 25b.

When the negative pressure state is reached, the control means operates a forcible opening means (not shown) to return the pressure in the pressurizing space P to the same state as the atmospheric pressure shown in FIG. To. Note that the forcible opening means may be operated manually without the control unit.

  If the lid 2 is opened when the pressure in the pressurizing space P is 1.05 atm or higher, which is higher than the atmospheric pressure, high-temperature and high-pressure steam may be ejected. Therefore, the lid body 2 includes a safety device 45 shown in FIG. 7 that prevents the lid body 2 from being opened in this state. The safety device 45 will be described with reference to FIGS.

(Safety device)
Reference numeral 45 shown in FIG. 7 denotes a safety device. The safety device 45 has a safety device drive shaft 45a and a safety device moving 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 show the lock operation knob 6, the lock ring rotation lever 6 b that operates when the lock operation knob 6 is rotated is in the locked state (the engaging portion 7 a of the lock ring 7 and the flange of the inner pot 3. This indicates that the projecting portion 3b1 is in an engaged position).

From this state, 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 to release the lock state, the lock ring turning lever 6b attached to the knob rotating portion 6a. However, the lock ring drive shaft 6c provided in the lock ring 7 is rotated in the E direction shown in FIG. 7, and accordingly, the lock ring 7 is rotated in the E direction.

At this time, the lock ring turning lever 6b moves the safety device drive shaft 45a provided in the safety device 45 in the direction F shown in FIG. As a result, the safety device moving part 45b is also moved in the F direction.

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, the lever power transmission means 44 is moved upward by the pressure as shown in FIG. The detection lever 43 is moved upward by the pushed lever power transmission means 44.

When the detection lever 43 is positioned upward, in other words, when the pressure space P is applied with a pressure of 1.05 atm or higher, which is higher than the atmospheric pressure, the lock operation knob 6 is moved in the direction to release the lock state. When rotated, the detection lever 43 and the safety device movable portion end 45c of the safety device movable portion 45b come into contact with each other as shown in FIGS. 9B and 9C, and the safety device movable portion 45b further moves in the F direction. become unable. That is, when the safety device movable portion 45b cannot move, the interlocking lock operation knob 6 cannot be rotated.

Therefore, when a pressure of 1.05 atm or higher, which is higher than atmospheric pressure, is applied to the pressurizing space P by the safety device 45, the lock operation knob 6 cannot be rotated to the position where the locked state is released. It is possible to avoid the danger that the high pressure steam is ejected by opening the lid 2 in the pressurized state.

  Here, the setting value at which the lid 2 cannot be opened is set to 1.05 atm or more because the internal pressure is less than 1.05 atm (consumption) in the technical standards of the Consumer Product Safety Act. This is because the structure of the product safety law cannot be opened unless the gauge pressure is less than 5.0 kilopascals).

Here, the gauge pressure of the consumer product safety law text is less than 5.0 kilopascals. Since 1 atm is about 100.0 kilopascals in gauge pressure, 5.0 kilopascals is 0.05 atm. It becomes. Therefore, since the absolute pressure is 1.05 atm, the gauge pressure less than 5.0 kilopascals and the absolute pressure less than 1.05 atm are the same pressure.

When the pressurizing space P is in the same state as the atmospheric pressure or in a negative pressure state, the position of the detection lever 43 is lowered so as not to prevent the safety device moving 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 forcible release means must be operated and the pressure in the pressurized space P must be returned to the same state as the atmospheric pressure. If this is the case, the lid 2 cannot be opened.

(Pressure reduction means)
Next, the decompression means 51 for returning the pressurized pressure space P to the atmospheric pressure will be described with reference to FIG. 4 and FIGS. FIG. 12 (a) illustrates the operation of the decompression means, and is a diagram showing the fully closed state of the steam valve by the steam valve opening / closing means, and FIG. 12 (b) illustrates the operation of the decompression means. FIG. 13 is a perspective view showing the configuration of the steam valve opening / closing means for explaining the operation of the decompression means, and FIG. 14 (a) explains the operation of the decompression means. FIG. 14B illustrates a state in the middle of opening of the steam valve by the steam valve opening / closing means, and FIG. 14B illustrates an operation of the decompression means, and is an enlarged view of a main part around the inclined portion of the slide member, FIG. (A) is the figure showing the state in the middle of opening of the steam valve by the steam valve opening / closing means of the cooking appliance concerning Embodiment 1 of this invention, FIG.15 (b) concerns on Embodiment 1 of this invention. It is a principal part enlarged view around the stair-like inclination part of the slide member of the steam valve opening / closing means of a cooking appliance.

  As shown in FIG. 4, the decompression means 51 is provided on the lid 2. The operation of the decompression means 51 will be described with reference to FIGS. In FIGS. 12 and 13, a slide member described later is different from the embodiment of the present invention.

  The decompression means 51 includes 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 when the valve body 51a1 is pressed against the valve receiving portion 51a2. The valve body 51a1 is held by a guide member 51a4. In the free state, the valve body 51a1 is biased by a spring 51a3 in a direction away from the valve receiving portion 51a2 (upward).

The steam valve opening / closing means 51b includes a slide member 61, an electric motor 51b2, a steam valve drive member 51b3, a slide contact portion 51b4, and a spring 51b5. When a control means (not shown) rotates the electric motor 51b2 that is a stepping motor, the pinion gear 502 attached to the electric motor 51b2 is driven to rotate, and the pinion gear 502 uses the driving force of the electric motor 51b2 to the rack gear 501 attached to the slide member 61. To communicate. With this driving force, the slide member 61 moves in the H direction or the J direction shown in FIG.

  FIG. 12A shows a state where the slide member 61 has moved in the J direction and has moved to a position where the steam valve 51a is closed. When the slide member 61 is moved to the position where the steam valve 51a is closed, the flat portion 71 which is the lowest position in the vertical direction of the slide member 61 and the slide contact portion 51b4 of the steam valve driving member 51b3 are in contact with each other. Since the slide contact portion 51b4 of the steam valve drive member 51b3 is in contact with the flat portion 71 which is the lowest position in the vertical direction of the slide member 61, the steam valve drive member 51b3 is also moved downward.

When 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. 12A) and is pressed against the valve receiving portion 51a2, and the steam valve 51a is closed. It has become a state. The force that presses the valve body 51a1 against the valve receiving portion 51a2 at this time is naturally stronger than the pressure of 1.1 to 1.2 atmospheres. The biasing force of the spring 51a3 is set to be weaker than the force by which the valve body 51a1 is pressed against the valve receiving portion 51a2 by the slide member 61 via the steam valve driving member 51b3.

A malfunction occurs in the pressure adjusting means during cooking in a state where the steam valve 51a is closed, and the internal pressure in the pressurized space P becomes higher than the pressure of 2.1 to 2.2 atm, for example, 2.45 atm. When the pressure exceeds the pressure, the valve body 51a1 pushes up the spring 51b5 provided in the steam valve opening / closing means 51b to discharge the steam and release the pressure. The discharged steam passes through a steam discharge section 2c which is a cartridge for discharging steam shown in FIG. 3, and is discharged out of the cooker from an exhaust port 2b shown in FIG.

The spring 51b5 is set to an urging force that is higher than the pressure of 2.1 to 2.2 atmospheres, for example, 2.45 atmospheres, for example, and the internal pressure in the pressurizing space P exceeds 2.45 atmospheres. This is one of the safety devices that open the valve body 51a1 by losing the internal pressure in the pressurizing space P when it is raised.

  FIG. 12B shows a state where the slide member 61 has moved in the H direction and has moved to a position where the steam valve 51a is opened. When the slide member 61 has moved to the position where the steam valve 51a is opened, the flat portion 73 that is the uppermost position in the vertical direction of the slide member 61 and the slide contact portion 51b4 of the steam valve drive member 51b3 are in contact with each other. . Since the slide contact portion 51b4 of the steam valve driving 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 driving member 51b3 is also moved upward.

When the steam valve driving member 51b3 moves upward, the valve body 51a1 of the steam valve 51a also moves upward (in the K direction shown in FIG. 12A) and is away from the valve receiving portion 51a2, and the steam valve 51a is opened. It is in the state. 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, high temperature steam may be ejected from the exhaust port 2b, which is dangerous. Therefore, 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 includes a flat portion 71 that is the lowest position in the vertical direction of the slide member 61 and a flat portion 73 that is the highest position in the vertical direction of the slide member 61. An inclined portion 72 is provided between the two.

Process in which the slide contact portion 51b4 of the steam valve drive member 51b3 moves from the flat portion 71 that is the lowest position in the vertical direction of the slide member 61 to the flat portion 73 that is the highest position in the vertical direction of the slide member 61. Thus, as shown in FIGS. 14A and 14B, the slide contact portion 51b4 is in contact with the inclined portion 72 while the steam valve 51a is being opened.

  When the control means rotates the electric motor 51b2 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 shown in FIGS. In the case of a linear and gentle inclination like the inclined portion 72, the valve body 51a1 is caused by the internal pressure 2.1 to 2.2 atm in the pressurizing space P at the contact portion between the slide contact portion 51b4 and the inclined portion 72. Since stress is generated in both the direction of pushing up and the direction in which the steam valve driving member 51b3 moves, when the torque of the electric motor 51b2 is insufficient, the driving force of the electric motor 51b2 cannot be stably transmitted to the sliding member 61. Since the movement speed of the steam valve cannot be controlled, the operation of the steam valve driving member 51b3 cannot be controlled. As a result, the steam valve 51 cannot be opened stably.

(Inclined portion of slide member according to Embodiment 1 of the present invention)
Therefore, in the first embodiment of the present invention, as shown in FIGS. 15A and 15B, the flat portion 71 that is the lowest position in the vertical direction of the slide member 51b1 and the uppermost position in the vertical direction of the slide member 51b1. The inclined portion provided between the flat portion 73 and the position is formed in a step shape with 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. Has been. The first inclined portion 51b11, the second inclined portion 51b12, and the third inclined portion 51b13 have the same gradient (first gradient).

Also. As shown in FIG. 15 (b), a fourth inclined part 51b14 is provided between the first inclined part 51b11 and the second inclined part 51b12, and a fifth inclined part is provided between the second inclined part 51b12 and the third inclined part 51b13. An inclined portion 51b15 is provided. The fourth inclined portion 51b14 and the fifth inclined portion 51b15 have the same gradient (second gradient), and the gradient is gentler than the gradient of the first inclined portion 51b11, the second inclined portion 51b12, and the third inclined portion 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 stepped, the slide contact portion 51b4 of the steam valve driving member 51b3 alternately contacts the first gradient and the second gradient, so that the operation of the valve body 51a1 is stepped. Can be done. By operating the valve body 51a1 stepwise, it is possible to discharge the steam stepwise and decompress it safely without blowing high-temperature and high-pressure steam all at once.

Further, by providing the fourth inclined portion 51b14 and the fifth inclined portion 51b15, which are the second inclined portions having a gentle inclination, the valve body 51a1 is located in the pressurized space P at the fourth inclined portion 51b14 and the fifth inclined portion 51b15. The force pushed up by the internal pressure of 2.1 to 2.2 atm can be suppressed. Therefore, a stepping motor having a small torque can be used for the electric motor 51b2 for a linear and gently sloping portion, and the cost can be reduced.

In the first embodiment of the present invention, the fourth inclined portion 51b14 and the fifth inclined portion 51b15 are set to the second gradient with a gentle inclination, but the direction orthogonal to the operation direction of the valve body 51a1, for example, the valve body 51a1. If the operating direction is vertical, it may be a flat portion in the horizontal direction, and the operation of the valve body 51a1 can be stepped in the same manner as the second gradient with a gentle inclination. By operating the valve body 51a1 stepwise, it is possible to discharge the steam stepwise and decompress it safely without blowing high-temperature and high-pressure steam all at once.

  Regarding the rotational drive of the electric motor 51b2, in the first embodiment of the present invention, even if the control means continuously operates, the inclined portion of the slide member is formed in a stepped shape, so that the valve body 51a1 is stepped as described above. It is possible to discharge the steam step by step without causing high temperature steam to be blown out at a stroke, and the pressure can be safely reduced. However, the slide contact portion 51b4 of the steam valve drive member 51b3 is moved away from the first inclined portion 51b11. If the motor 51b2 is temporarily stopped at the timing of moving to the fourth inclined portion 51b14 and the timing of moving from the second inclined portion 51b12 to the fifth inclined portion 51b15, the valve body 51a1 is more reliably operated stepwise, The steam can be discharged in a stepwise manner and the pressure can be safely reduced without blowing out the steam at once.

  D rotation center, P pressurizing space, 1 body, 1a inner pot accommodating part, 1b hinge part, 1c lid opening button, 1d latch, 1e display part, 1f operation button, 2 lid, 2a locking part, 2b Exhaust port, 2c Steam exhaust part, 3 inner pan, 3a handle, 3b flange part, 3b1 flange overhang part, 3c body part, 3d bottom part, 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 part, 6b lock ring rotation lever, 6c lock ring drive shaft, 6d lock operation knob mounting screw, 7 lock ring, 7a engagement part, 7b notch , 8 Temperature detection means, 9 Inner lid attachment forgetting prevention means, 9a Inner lid attachment forgetting prevention means movable part, 10 groove part, 11 heating means, 12 heating means, 13 biasing means 21 Rotating shaft, 22 Hinge spring, 23 Substrate, 24 Air blowing means, 25 Operation display board, 25a Operation means, 25b Display means, 31 Lock detection means, 40 Seal packing, 41 Pressure state detection switch, 42 Pressure state detection switch, 43 Detection lever, 44 lever moving force transmission means, 45 safety device, 45a safety device drive shaft, 45b safety device moving part, 45c safety device moving part end, 51 pressure reducing means, 51a steam valve, 51a1 valve body, 51a2 valve receiving part 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 electric motor (Stepping motor), 51b3 steam valve Moving member, 51b4 slide contact portion, 51b5 spring, 61 slide member, 71 flat portion, 72 inclined portion, 73 flat portion, 81 slide member, 81a1 first inclined portion, 81a2 second inclined portion, 81a3 third inclined portion, 81a4 4th inclination part, 81a5 5th inclination part, 91 Inner lid detection part, 92a Rotation prevention rib, 92b Rotation prevention rib, 92c Rotation prevention rib, 92d Rotation prevention rib, 501 Rack gear, 502 pinion gear, 100 Cooker.

Claims (7)

A body having an opening at the top;
An inner pot that is accommodated in the main body so that it can be inserted and removed from the main body opening, and has an opening at the upper end in a cylindrical shape having a bottom portion;
A lid that is rotatably provided on the main body and covers an upper portion of the main body;
An inner lid attached to the lid body that has a seal member and covers the inner pan so that the seal member can be sealed in contact with the entire circumference of the upper end opening of the inner pan;
Locking means for maintaining the contact state of the sealing member of the inner pot and the inner lid, and sealing the inner pot and the inner lid;
Pressure reducing means for returning the predetermined pressure applied to the inner space sealed by the inner pot and the inner lid from the predetermined pressure to the same pressure as the atmospheric pressure;
A heating means provided in the main body for heating the inner pot;
Control means for controlling the heating means,
The locking means has a lock ring,
The inner hook has a flange overhang;
A cooker that seals the inner pot and the inner lid by engaging the lock ring and the flange overhanging portion.   The cooker according to claim 1, wherein the lock means includes an operation knob for rotating the lock ring, and the lock ring is engaged with the flange protruding portion of the inner pot by rotating the lock ring with the operation knob. .   The locking means can maintain the contact state of the sealing member between 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. The cooking device according to claim 1, further comprising detection means for detecting a state. Providing a notification means,
When the detection means detects that the contact state between the inner pan and the seal member of the inner lid can be maintained, the control means informs the notification means that the detection means has detected. 3. The cooker according to 3.   The control means energizes the heating means when the detection means detects that the lock means is in a state where contact between the inner pot and the seal member of the inner lid is maintained. The cooker in any one of Claim 4.   The inner lid is detachably attached to the lid body, and the lid body is provided with an inner lid attachment forgetting prevention means, and the inner lid attachment forgetting prevention means is not attached with the inner lid. The cooker according to any one of claims 2 to 5, wherein the operation knob cannot be operated. A pressure state detecting means for detecting a pressure state of the inner space sealed by the inner pot and the inner lid, wherein the pressure in the inner space is a predetermined pressure higher than atmospheric pressure; When the state detection means is detecting,
The cooker according to any one of claims 2 to 6, wherein the operation knob cannot be operated from a state in which the lock ring and the flange projecting portion in which the inner pot and the inner lid are sealed are engaged. .

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