Cooking appliance

Abstract

To miniaturize a cooker.SOLUTION: A cooker includes: a container for storing a heating object; a heating part for heating the container or the inside of the container; a safety valve 24 provided on a passage 18 for discharging steam generated inside the container to the outside, for releasing a pressure when the pressure inside the container exceeds a safety valve opening pressure value; and a pressure reduction valve 21 provided on the passage 18, for controlling the pressure inside the container. The safety valve 24 and the pressure reduction valve 21 are integrally constituted.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present disclosure relates to cooking appliances. [Background technology]

[0002] There is provided a cooking device that heats and cooks ingredients under a pressure equal to or higher than atmospheric pressure. For example, Patent Document 1 discloses a cooking device that includes a cooking pot in which ingredients are stored, a lid body arranged at an opening of the cooking pot, and an inner lid detachably attached to the lid body. The lid body has an exhaust passage for discharging steam from inside the cooking pot, and the inner lid has an exhaust hole that constitutes part of the exhaust passage. The lid body also includes a valve body arrangement portion provided at a portion facing the exhaust hole, an elastic member that closes an end of the valve body arrangement portion, and a valve body arranged on the inner side of the lid body of the valve body arrangement portion. By moving the valve body in the vertical direction, the exhaust hole of the inner lid can be closed to increase the pressure inside the cooking pot, or the exhaust hole can be opened to return the pressure inside the cooking pot to atmospheric pressure. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2016-209417 A Summary of the Invention [Problem to be solved by the invention]

[0004] Such a cooker requires not only a pressure reducing valve to control the pressure inside the cooking pot, but also a safety valve to release the pressure when the pressure inside the cooking pot exceeds a predetermined value to prevent the pressure inside the cooking pot from becoming too high, which can increase the number of parts and size. A technology is needed to make the cooker smaller while ensuring its safety.

[0005] The present disclosure provides techniques for miniaturizing cooking appliances. [Means for solving the problem]

[0006] The cooking device according to the present disclosure includes a container for accommodating an object to be heated, a heating unit for heating the container or the inside of the container, a first valve provided in a passage for releasing steam generated inside the container to the outside and releasing the pressure when the pressure inside the container exceeds a predetermined value, and a second valve provided in the passage for controlling the pressure inside the container. The first valve and the second valve are integrally configured. Effect of the Invention

[0007] According to the present disclosure, the cooking appliance can be made smaller. [Brief description of the drawings]

[0008] [Figure 1] FIG. 1 is a perspective view of a cooking device according to a first embodiment; [Diagram 2] FIG. 1 is a perspective view of a cooking device according to a first embodiment with a lid removed; [Diagram 3] 1 is a cross-sectional view of a cooking device according to a first embodiment; [Figure 4A] FIG. 1 is a perspective view of a back surface of an inner lid of a cooking device according to a first embodiment; [Figure 4B] FIG. 1 is a perspective view of a surface of an inner lid of a cooking device according to a first embodiment; [Figure 5A] FIG. 1 is a diagram showing a schematic configuration of a valve unit of a cooking device according to a first embodiment; [Figure 5B] FIG. 1 is a diagram showing a schematic configuration of a valve unit of a cooking device according to a first embodiment; [Figure 5C] FIG. 1 is a diagram showing a schematic configuration of a valve unit of a cooking device according to a first embodiment; [Figure 6] FIG. 13 is a diagram showing a schematic configuration of a valve unit of a cooking device according to a second embodiment; [Figure 7A] FIG. 13 is a diagram showing a schematic configuration of a valve unit of a cooking device according to a third embodiment. [Figure 7B] FIG. 13 is a diagram showing a schematic configuration of a valve unit of a cooking device according to a third embodiment. [Figure 7C] FIG. 13 is a diagram showing a schematic configuration of a valve unit of a cooking device according to a third embodiment. [Figure 8] FIG. 1 is a diagram showing a schematic configuration of a valve unit of a cooking appliance; [Figure 9]FIG. 1 shows an example of a user interface of a cooking device according to the first to third embodiments. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] Hereinafter, the embodiments will be described in detail with reference to the drawings. However, more detailed description than necessary may be omitted. For example, detailed description of already well-known matters or duplicate description of substantially the same configuration may be omitted.

[0010] It should be noted that the accompanying drawings and the following description are provided to enable those skilled in the art to fully understand the present disclosure, and are not intended to limit the subject matter described in the claims.

[0011] (Embodiment 1) Hereinafter, the first embodiment will be described with reference to FIGS. 1 to 5C.

[0012] [1-1. Configuration] Figures 1 to 3 show the configuration of a cooking appliance 10 according to embodiment 1. Figure 1 is a perspective view of cooking appliance 10 according to embodiment 1. Figure 2 is a perspective view of cooking appliance 10 according to embodiment 1 with a lid removed. Figure 3 is a cross-sectional view of cooking appliance 10 according to embodiment 1.

[0013] Cooking device 10 comprises a main body 11, a lid 12, a handle 13, a container 14, and a stirring blade 15.

[0014] The container 14 is detachably housed inside the main body 11 and houses an object to be heated. A stirring blade 15 for stirring the object to be heated is provided inside the container 14. The stirring blade 15 is rotated by a motor. The motor is controlled by a control device. The container 14 is heated by a heating unit. The heating unit is controlled by the control device.

[0015] The lid 12 opens and closes the opening of the main body 11 in which the container 14 is housed. The cooker 10 of this embodiment is configured to be able to increase the pressure inside the container 14 to atmospheric pressure or higher during heating. For this purpose, an inner lid 17 is provided inside the lid 12 to airtightly close the opening of the container 14 when the lid 12 is closed. The gap between the lid 12 and the inner lid 17 is sealed by a seal part 93. The seal part 93 may be a packing made of an elastic material. The seal part 93 may be provided on the lid 12, on the inner lid 17, or on both the lid 12 and the inner lid 17. The lid 12 is provided with an exhaust hole 16 for releasing steam generated inside the container 14 to the outside. A valve unit 20 for controlling the pressure inside the container 14 is provided in the middle of a passage 18 from the inner lid exhaust hole 19 to the exhaust hole 16, which is provided to release steam generated inside the container 14 to the outside.

[0016] FIG. 4A is a perspective view of the back surface of the inner lid 17. FIG. 4B is a perspective view of the front surface of the inner lid 17. In order to heat the object by increasing the pressure inside the container 14 to atmospheric pressure or higher, a pressure reducing valve that functions as a second valve for controlling the pressure inside the container 14 and a safety valve that functions as a first valve that releases the pressure when the pressure inside the container 14 exceeds a predetermined value are provided in the middle of the passage 18. These valves need to be stored within a range 94 sealed by the seal part 93. When a plurality of pressure reducing valves and safety valves are attached to different positions of the inner lid 17, a large number of attachment holes are provided in the inner lid 17 at intervals required for processing, so that the range 94 needs to be made wide. In that case, when the pressure inside the container 14 is pressurized to atmospheric pressure or higher, stress is applied to the range 94 of the inner lid 17, and the plane of the range 94 may be deformed out of plane, decreasing the airtightness between the seal part 93. In addition, the size of the seal part 93 increases, so the cost of materials increases.

[0017] To solve these problems, in the cooker 10 of this embodiment, a valve unit 20 that integrates a pressure reducing valve and a safety valve is provided in a range 94 of the inner lid 17. This allows the inner lid 17 to be formed into a tapered shape so that the range 94 is small, thereby preventing the inner lid 17 from deforming out of plane when pressurized, improving pressure resistance and airtightness. Also, the material cost of the seal portion 93 can be reduced.

[0018] 5A, 5B, and 5C are schematic diagrams showing the structure of the valve unit 20 of the cooker 10 of the first embodiment. The valve unit 20 is an integral structure of a pressure reducing valve 21, which is a second valve, and a safety valve 24, which is a first valve. The valve unit 20 is provided in the middle of a passage 18 extending from the inner lid exhaust hole 19 of the inner lid 17 to the exhaust hole 16 of the lid 12, which is provided for releasing steam generated inside the container 14 to the outside. The valve unit 20 is fixed to the inner lid 17 by a nozzle fixing spring 88 and a fixing nut 89. This prevents the valve unit 20 from coming off the inner lid 17 and prevents steam from leaking through a gap. FIG. 5A shows a state in which the pressure reducing valve 21 and the safety valve 24 are closed. FIG. 5B shows a state in which the pressure reducing valve 21 is opened. FIG. 5C shows a state in which the safety valve 24 is opened.

[0019] The pressure reducing valve 21 includes a valve body 22 that is movable in the vertical direction, and a pressure reducing valve spring 23 that urges the valve body 22 upward. The pressure reducing valve spring 23 has an urging force that is greater than or equal to the weight of the valve body 22. The safety valve 24 includes a valve body 25 that is movable in the vertical direction, and a safety valve spring 26 that urges the valve body 25 downward.

[0020] In a closed state (FIG. 5A) in which the valve element 22 of the pressure reducing valve 21 moves to the uppermost position and the valve element 25 of the safety valve 24 moves to the lowermost position, the pressure reducing valve 21 closes the flow path 81 between the valve element 22 of the pressure reducing valve 21 and the valve element 25 of the safety valve 24, and the safety valve 24 closes the flow path 82 between the valve element 25 of the safety valve 24 and the seat 97. This causes the pressure inside the container 14 to rise to or above atmospheric pressure.

[0021] In the pressure reducing valve open state (FIG. 5B) where the valve body 22 of the pressure reducing valve 21 is moved to the lowest position, the pressure reducing valve 21 opens the flow path 81. As a result, steam inside the container 14 flows into the inside of the cover 90 from the hole 91 on the side surface and the hole 92 on the bottom surface of the cover 90 for covering the inner lid exhaust hole 19, and passes through the inner lid exhaust hole 19, the flow path 83 constituting a part of the passage 18, the flow path 81, and the opening 96 of the outer shell 95, as shown by the arrow in FIG. 5B, and is exhausted to the outside from the exhaust hole 16, so that the inside of the container 14 is depressurized. During cooking, the cooker 10 closes the pressure reducing valve 21 to increase the pressure inside the container 14, or opens the pressure reducing valve 21 to depressurize the inside of the container 14. As a result, a sudden pressure change is applied to the object to be heated during cooking, and the object to be heated can be moved inside the container 14, so that uneven heating can be reduced and efficient heating can be performed. In addition, the pressure reduction after cooking can be accelerated. When cooking is completed, cooker 10 gradually pushes down the upper part of valve body 22 protruding from the upper end of valve unit 20 to open passage 18. This causes steam inside container 14 to be released to the outside through exhaust hole 16, and the inside of container 14 is returned to atmospheric pressure, making it possible to open lid 12. Valve body 22 may be moved electrically by a driving means such as a stepping motor, may be moved by a mechanical driving mechanism, or may be moved manually. The driving means or driving mechanism functions as a pressure control unit that controls the pressure inside container 14 by controlling the opening and closing of pressure reducing valve 21.

[0022] When the pressure inside the container 14 exceeds the biasing force of the safety valve spring 26, the valve body 25 of the safety valve 24 is pushed upward together with the valve body 22 of the pressure reducing valve 21, and a gap is generated between the valve body 25 and the seat 97. That is, in the safety valve open state (FIG. 5C) in which the valve body 25 moves to the uppermost position, the safety valve 24 opens the flow path 82. As a result, steam inside the container 14 flows into the inside of the cover 90 from the side hole 91 and the bottom hole 92 of the cover 90 for covering the inner lid exhaust hole 19, and is exhausted to the outside from the exhaust hole 16 through the inner lid exhaust hole 19, the flow path 83 and the flow path 82 constituting a part of the passage 18, and the opening 96 of the outer shell 95, as shown by the arrows in FIG. 5C, so that the pressure inside the container 14 is reduced. The biasing force of the safety valve spring 26 is adjusted so that when the pressure inside the container 14 exceeds the safety valve opening pressure value, the valve body 25 moves upward and the safety valve 24 opens. This makes it possible to prevent the pressure inside the container 14 from exceeding the safety valve opening pressure value even if a malfunction occurs in the pressure reducing valve 21. If no malfunction occurs in the pressure reducing valve 21, the safety valve 24 remains closed and does not open.

[0023] The outer shell 95 of the valve unit 20 is made of a high-strength material to support the urging force of the safety valve spring 26. The opening 96 provided in the outer shell 95 is preferably made large in area within a range where the strength of the outer shell 95 is ensured in order to ensure cleaning. The outer shell 95 is removably fixed to the top surface of the valve unit 20 by a female screw and a male screw, etc. The outer shell 95 may be configured to be removably fixed to the top surface of the valve unit 20 by rotating the outer shell 95. The outer shell 95 may be configured to be removably fixed to the top surface of the valve unit 20 by hooking a claw onto the top surface of the valve unit 20. This allows the outer shell 95 to be removed to clean the inside of the valve unit 20, making it less likely to clog.

[0024] The pressure reducing valve 21, the safety valve 24, and the pedestal 97 are arranged on the same axis. The pressure reducing valve 21, the safety valve 24, and the pedestal 97 are housed in the same housing, and are positioned by the outer shell 95 of the valve unit 20 so that they are arranged on the same axis. This makes it possible to ensure a radial seal margin between the valve body 22 of the pressure reducing valve 21 and the valve body 25 of the safety valve 24, and a seal margin between the valve body 25 of the safety valve 24 and the pedestal 97, while ensuring a margin of seal margin, thereby making it possible to reduce the size of the valve unit 20. In order to quickly exhaust steam inside the container 14 when the pressure reducing valve 21 is in an open state, the opening area (open area: Q in FIG. 5B) formed by the pressure reducing valve 21 and the safety valve 24 when the pressure reducing valve 21 is opened is set to be equal to or larger than the opening area (flow path area: S in FIG. 5B) of the inner lid exhaust hole 19 (for example, 28 mm 2 It is preferable that the opening area Q and the flow path area S are equal to or larger than the opening area Q. The opening area Q and the flow path area S may be determined according to the opening area when cooking ingredients or food without pressurizing the inside of the container 14 with the pressure reducing valve 21 open in the cooking appliance 10. In the cooking appliance 10 of the present embodiment, the pressure reducing valve 21 and the safety valve 24 are arranged concentrically on the same axis as described above, and the valve body is configured to move up and down to operate, so that an opening area Q equal to or larger than the flow path area S can be secured in the minimum arrangement area, and therefore it is possible to prevent the steam inside the container 14 from being pressurized without being quickly discharged even when the pressure reducing valve is open.

[0025] The pressure reducing valve 21 and the safety valve 24 are provided in the same passage 18 for discharging steam from inside the container 14 to the outside. In addition, the pressure reducing valve 21 and the safety valve 24 share the inner lid exhaust hole 19 and the flow path 83 for discharging steam from inside the container 14. This makes it possible to increase the area of ​​the inner lid exhaust hole 19 while suppressing the pressure on each component, so that steam inside the container 14 can be quickly discharged to the outside when the pressure is reduced. In addition, the number of holes provided in the inner lid 17 can be reduced, so that airtightness can be improved and manufacturing costs can be reduced.

[0026] It is preferable that the parts common to the pressure reducing valve 21 and the safety valve 24 are thin and lightweight within the range where pressure resistance and the opening area required for exhaust are ensured. This allows the size of the valve unit 20 to be reduced. In addition, since the pressure reducing valve 21 can be made smaller, the urging force of the safety valve spring 26 arranged on the outside of the pressure reducing valve 21 can be reduced. Therefore, since the wire diameter of the safety valve spring 26 can be reduced, the variation in the urging force of the safety valve spring 26 can be suppressed and stable operation can be achieved. In addition, since the number of safety valves 24 can be reduced, the number of parts and manufacturing costs can be reduced and assembly can be improved.

[0027] The pressure reducing valve 21 and the safety valve 24 are both opened and closed by the vertical movement of the valve body, so that juxtaposition of them increases the horizontal size of the valve unit 20. In the valve unit 20 of the present embodiment, the pressure reducing valve 21 and the safety valve 24 are not arranged side by side, but are integrally configured so that the pressure reducing valve 21 is contained inside the safety valve 24, so that the size, number of parts, and manufacturing cost of the valve unit 20 can be reduced. In addition, the passage 18 can be shared, so that the size, number of parts, and manufacturing cost of the valve unit 20 can be reduced, and the convenience of the user when cleaning can be improved. In addition, the restrictions on the parts layout can be reduced. In addition, the convex shape of the inner lid 17 can be reduced, so that the object to be heated and the catch during cleaning can be reduced. The pressure reducing valve 21 and the safety valve 24 may be provided adjacent to each other. In this case, too, the passage 18 can be shared, so that the size, number of parts, and manufacturing cost of the valve unit 20 can be reduced, and the convenience of the user when cleaning can be improved.

[0028] In the valve unit 20 of this embodiment, the safety valve 24 is provided outside the pressure reducing valve 21. As a result, a spring with a larger diameter than the pressure reducing valve spring 23 can be used as the safety valve spring 26 of the safety valve 24, which opens at a higher pressure than the pressure reducing valve 21, so that the size and cost of the valve unit 20 can be reduced and the safety of the cooking appliance 10 can be improved. In addition, since the opening area of ​​the pressure reducing valve 21 can be reduced, the operating force of the pressure reducing valve 21 during pressure reduction after pressurized cooking can be reduced, and the torque of the motor or the like for moving the valve body 22 can be reduced, so that the valve unit 20 can be made smaller. The opening area of ​​the valve unit 20 may be larger than the opening area of ​​the pressure reducing valve 21. This improves cleaning properties.

[0029] [1-2. Operation] The operation and function of cooker 10 configured as above will be described below. A user grasps handle 13 to open lid 12, and places food or other items to be heated in container 14. The user closes lid 12, sets heating conditions such as temperature, heating time, and whether or not to stir via a user interface of cooker 10, and issues a command to start heating. A control device of cooker 10 controls a heating unit for heating container 14, a motor for rotating stirring blade 15, and the like, according to the set heating conditions.

[0030] When the pressure inside container 14 is atmospheric pressure, pressure reducing valve 21 is open. When the control device wants to pressurize the inside of container 14 during heating, it closes pressure reducing valve 21. As a result, the pressure inside container 14 increases due to steam generated inside container 14. When the control device wants to reduce the pressure inside container 14 during heating, it opens pressure reducing valve 21. As a result, part of the steam is released to the outside from exhaust hole 16 via passage 18, and the pressure inside container 14 drops to near atmospheric pressure (1.05 atmospheres or less).

[0031] If the pressure inside the container 14 exceeds the safety valve opening pressure value due to a malfunction of the pressure reducing valve 21 or the like, the safety valve 24 opens and the steam is released to the outside from the exhaust hole 16 via the passage 18. This makes it possible to prevent the pressure inside the container 14 from exceeding the safety valve opening pressure value.

[0032] When heating is completed, the control device gradually opens the pressure reducing valve 21 by gradually depressing the valve body 22 of the pressure reducing valve 21, gradually releasing the steam inside the container 14 to the outside, thereby reducing the pressure inside the container 14. When the pressure inside the container 14 returns to atmospheric pressure, the user grasps the handle 13 to open the lid 12, and removes the object to be heated from the container 14.

[0033] [1-3. Effects, etc.] As described above, in this embodiment, cooking appliance 10 includes container 14 for accommodating an object to be heated, a heating unit for heating container 14 or the inside of container 14, safety valve 24 provided in passage 18 for releasing steam generated inside container 14 to the outside and releasing pressure when the pressure inside container 14 exceeds a predetermined value, and pressure reducing valve 21 provided in passage 18 for controlling the pressure inside container 14, with safety valve 24 and pressure reducing valve 21 being integrally configured. This makes it possible to reduce the size, number of parts, and manufacturing costs of cooking appliance 10.

[0034] Furthermore, in the present embodiment, cooking appliance 10 includes a pressure control unit that controls the pressure inside container 14 by controlling the opening and closing of pressure reducing valve 21. This allows the pressure inside container 14 to be appropriately controlled.

[0035] Furthermore, in the present embodiment, safety valve 24 is provided on the outside of pressure reducing valve 21. This makes it possible to reduce the size and cost of cooker 10, and also makes it possible to improve the safety of cooker 10.

[0036] In the present embodiment, the safety valve 24 and the pressure reducing valve 21 are opened and closed by vertical movement of the valve body, which makes it possible to reduce the size of the cooker 10, the number of parts, and the manufacturing cost.

[0037] In this embodiment, the first valve is a safety valve 24 that releases pressure when the pressure inside the container 14 exceeds a safety valve opening pressure value, and the second valve is a pressure reducing valve 21 that reduces the pressure inside the container 14 in an open state and increases the pressure inside the container 14 in a closed state. The second valve may be the safety valve 24 or a pressure regulating valve that releases pressure when the pressure inside the container 14 exceeds a pressure regulating valve opening pressure value that is lower than the safety valve opening pressure value. This allows the pressure inside the container 14 to be appropriately controlled.

[0038] In the present embodiment, pressure reducing valve 21 is configured such that valve element 22 is biased to close passage 18, and passage 18 is opened by mechanically or manually moving valve element 22 of pressure reducing valve 21, and safety valve 24 is configured such that valve element 25 is biased to close passage 18, and when the pressure inside container 14 exceeds the biasing force, valve element 25 of safety valve 24 moves to release the pressure inside container 14. This makes it possible to reduce the size and cost of cooker 10, and to improve the safety of cooker 10.

[0039] In the present embodiment, pressure reducing valve 21 is configured so that passage 18 is opened when valve body 22 is moved downward, and safety valve 24 is configured so that passage 18 is opened when valve body 25 is moved upward. This makes it possible to reduce the size and cost of cooker 10, and to improve the safety of cooker 10.

[0040] (Embodiment 2) The second embodiment will be described below with reference to FIG.

[0041] [2-1. Configuration] Fig. 6 shows a schematic configuration of valve unit 20 of cooker 10 of embodiment 2. Cooker 10 of embodiment 2 includes pressure regulating valve 27 as a second valve instead of pressure reducing valve 21 of cooker 10 of embodiment 1. Other configurations and operations are similar to those of embodiment 1. Fig. 6 shows a state in which pressure regulating valve 27 and safety valve 24 are closed.

[0042] The pressure regulating valve 27 includes a valve body 28 that can move in the vertical direction, and a pressure regulating valve spring 29 that urges the valve body 28 downward. The pressure regulating valve 27 opens when the pressure inside the container 14 exceeds a pressure regulating valve opening pressure value, and closes when the pressure inside the container 14 falls below the pressure regulating valve opening pressure value. This maintains the pressure inside the container 14 constant. The pressure regulating valve 27 may be configured to adjust the pressure regulating valve opening pressure value. For example, the outer shell 95 may be made movable to adjust the spring constants of the pressure regulating valve spring 29 and the safety valve spring 26. The urging forces of the pressure regulating valve spring 29 and the safety valve spring 26 may be electrically adjusted by a driving means such as a motor, may be adjusted by a mechanical driving mechanism, or may be manually adjusted. The other configurations and operations of the pressure regulating valve 27 are the same as those of the pressure reducing valve 21 of the first embodiment.

[0043] According to the cooker 10 of the present embodiment, the size, number of parts, and manufacturing cost of the valve unit 20 can be reduced. In addition, since the passage 18 can be shared, the size, number of parts, and manufacturing cost of the valve unit 20 can be reduced, and the convenience for the user when cleaning can be improved. In addition, since a spring having a larger diameter than the pressure regulating valve spring 29 can be used as the safety valve spring 26 of the safety valve 24 that opens at a pressure higher than that of the pressure regulating valve 27, the size and cost of the valve unit 20 can be reduced, and the safety of the cooker 10 can be improved. In addition, since the pressure inside the container 14 can be maintained at the pressure regulating valve opening pressure value, the heated object such as ingredients can be more appropriately cooked. In addition, the restrictions on the component layout can be reduced. In addition, since the convex shape can be reduced, it is possible to suppress the object to be heated from being caught or caught during cleaning. The pressure regulating valve 27 and the safety valve 24 may be provided adjacent to each other. The pressure regulating valve 27 and the safety valve 24 may be interchanged. In this case too, the passage 18 can be shared, thereby reducing the size, number of parts, and manufacturing costs of the valve unit 20, while improving convenience for the user when performing maintenance.

[0044] [2-2. Operation] The operation and function of cooking appliance 10 configured as above are similar to those of the first embodiment.

[0045] [2-3. Effects, etc.] As described above, in this embodiment, cooking appliance 10 includes container 14 for accommodating an object to be heated, a heating unit for heating container 14 or the inside of container 14, safety valve 24 provided in passage 18 for releasing steam generated inside container 14 to the outside and releasing pressure when the pressure inside container 14 exceeds a predetermined value, and pressure regulating valve 27 provided in passage 18 for controlling the pressure inside container 14, with safety valve 24 and pressure regulating valve 27 being integrally configured. This makes it possible to reduce the size, number of parts, and manufacturing costs of cooking appliance 10.

[0046] Furthermore, in the present embodiment, cooking appliance 10 includes a pressure control unit that controls the pressure inside container 14 by controlling the opening and closing of pressure regulating valve 27. This makes it possible to appropriately adjust the pressure inside container 14.

[0047] Furthermore, in the present embodiment, safety valve 24 is provided on the outside of pressure regulating valve 27. This makes it possible to reduce the size and cost of cooker 10, and also makes it possible to improve the safety of cooker 10.

[0048] In the present embodiment, the safety valve 24 and the pressure adjusting valve 27 are opened and closed by vertical movement of the valve body, which makes it possible to reduce the size of the cooker 10, the number of parts, and the manufacturing cost.

[0049] In the present embodiment, the first valve is a safety valve 24 that releases pressure when the pressure inside the container 14 exceeds a safety valve opening pressure value, and the second valve is a pressure regulating valve 27 for maintaining the pressure inside the container 14 at a pressure regulating valve opening pressure value. The first valve may be the pressure regulating valve 27. The second valve may be the pressure reducing valve 21 or the safety valve 24. This makes it possible to appropriately adjust the pressure inside the container 14.

[0050] In the present embodiment, the pressure regulating valve 27 is configured such that the valve element 28 is biased to close the passage 18, and the passage 18 is opened by mechanically or manually moving the valve element 28 of the pressure regulating valve 27, and the safety valve 24 is configured such that the valve element 25 is biased to close the passage 18, and when the pressure inside the container 14 exceeds the biasing force, the valve element 25 of the safety valve 24 moves, thereby releasing the pressure inside the container 14. This makes it possible to reduce the size and cost of the cooker 10, and to improve the safety of the cooker 10.

[0051] In the present embodiment, pressure regulating valve 27 is configured so that passage 18 is opened when valve body 28 is moved upward, and safety valve 24 is configured so that passage 18 is opened when valve body 25 is moved upward. This makes it possible to reduce the size and cost of cooker 10, and to improve the safety of cooker 10.

[0052] (Embodiment 3) Hereinafter, the third embodiment will be described with reference to FIGS. 7A to 9.

[0053] [3-1. Configuration] Cooking appliance 10 of the third embodiment includes a valve unit 30 instead of valve unit 20 of cooking appliance 10 of the first embodiment. The other configurations and operations are similar to those of the first embodiment.

[0054] 7A, 7B, and 7C show schematic configurations of the valve unit 30 of the cooker 10 of the third embodiment. The valve unit 30 is configured such that a pressure reducing valve 31, which is a second valve, and a safety valve 34, which is a first valve, are integrally formed. FIG. 7A shows a state in which the pressure reducing valve 31 is open. FIG. 7B shows a state in which the pressure reducing valve 31 is closed. FIG. 7C shows a state in which the safety valve 34 is open. The valve unit 30 is provided midway along a passage 18 that is provided to release steam generated inside the container 14 to the outside and that runs from the inner lid exhaust hole 19 of the inner lid 17 to the exhaust hole 16 of the lid 12.

[0055] The pressure reducing valve 31 includes a valve body 32 that is movable in the vertical direction, and a pressure reducing valve spring 33 that urges the valve body 32 upward. The pressure reducing valve spring 33 has an urging force that is sufficient to support the weight of the valve body 32 and the pressure acting on the valve body 32. The safety valve 34 includes a valve body 35 that is movable in the vertical direction, and a safety valve spring 36 that urges the valve body 35 downward.

[0056] In the open state (FIG. 7A) where valve element 32 of pressure reducing valve 31 has moved to the uppermost position, pressure reducing valve 31 opens flow path 84 below valve element 32 of pressure reducing valve 31. As a result, steam inside container 14 passes through flow path 84 constituting part of passage 18, as shown by the arrow in FIG. 7A, and is exhausted to the outside from exhaust hole 16, thereby reducing the pressure inside container 14.

[0057] In the closed state (FIG. 7B) where the valve body 32 of the pressure reducing valve 31 moves to the lowest position and the valve body 35 of the safety valve 34 moves to the lowest position, the pressure reducing valve 31 closes the flow path 84. As a result, the pressure inside the container 14 is increased to atmospheric pressure or higher. Contrary to the pressure reducing valve 21 of the first embodiment, in the initial state where the pressure reducing valve 31 is not loaded, the valve body 32 is biased by the pressure reducing valve spring 33 to be in the uppermost position, so that the pressure reducing valve 31 is in an open state. During cooking, the cooker 10 closes the pressure reducing valve 31 to increase the pressure inside the container 14, or opens the pressure reducing valve 31 to reduce the pressure inside the container 14. As a result, a sudden pressure change is applied to the object to be heated during cooking, and the object to be heated can be moved inside the container 14, so that uneven heating can be reduced and efficient heating can be performed. In addition, the pressure reduction after cooking can be accelerated. When the pressure inside the container 14 is increased during cooking, the cooker 10 moves the valve body 32 to the lowest position by pushing it down, and closes the pressure reducing valve 31. The valve body 32 may be moved electrically by a driving means such as a stepping motor, or may be moved by a mechanical driving mechanism, or may be moved manually. The valve body 32 may be indirectly pushed down by a spring 99 provided between the outer shell 95 and the valve body 32 by pushing down the outer shell 95. The driving means and the driving mechanism function as a pressure control unit that controls the pressure inside the container 14 by controlling the opening and closing of the pressure reducing valve 31. When cooking is completed, the cooker 10 gradually weakens the force pushing down the valve body 32, gradually moving the valve body 32 upward to open the passage 98. As a result, steam inside the container 14 is released to the outside through the exhaust hole 16, and the inside of the container 14 is returned to atmospheric pressure, so that the lid 12 can be opened.

[0058] In the open state (FIG. 7C) where the valve body 35 of the safety valve 34 has moved to the uppermost position, the safety valve 34 opens the flow path 85 between the valve body 35 of the safety valve 34 and the valve body 32 of the pressure reducing valve 31. As a result, steam inside the container 14 passes through the flow path 85 constituting a part of the passage 18 and is exhausted to the outside from the exhaust hole 16 as shown by the arrow in FIG. 7C, so that the inside of the container 14 is depressurized. The urging force of the safety valve spring 36 is adjusted so that when the pressure inside the container 14 exceeds the safety valve opening pressure value, the valve body 35 moves upward and the safety valve 34 opens. This makes it possible to prevent the pressure inside the container 14 from exceeding the safety valve opening pressure value even if a malfunction occurs in the pressure reducing valve 31. If no malfunction occurs in the pressure reducing valve 31, the safety valve 34 remains closed and does not open.

[0059] The outer shell 95 may be configured so that the spring constant of the pressure reducing valve spring 33 and the safety valve spring 36 can be adjusted by pushing down the outer shell 95. The operating pressure of the pressure reducing valve 31 and the safety valve opening pressure value are determined by the amount of movement of the outer shell 95 and the spring forces of the pressure reducing valve spring 33 and the safety valve spring 36. In this case, the pressure reducing valve 31 can function not only as a pressure reducing valve but also as a pressure regulating valve. The safety valve 34 may also be used as a pressure regulating valve. A pressure regulating valve may be provided instead of the pressure reducing valve 31.

[0060] Both the pressure reducing valve 31 and the safety valve 34 are opened and closed by the vertical movement of the valve body, so that juxtaposition of them increases the horizontal size of the valve unit 30. In the valve unit 30 of the present embodiment, the pressure reducing valve 31 and the safety valve 34 are not arranged side by side, but are integrally configured so that the safety valve 34 is contained inside the pressure reducing valve 31, so that the size, number of parts, and manufacturing cost of the valve unit 30 can be reduced. In addition, since the passage 18 can be shared, the size, number of parts, and manufacturing cost of the valve unit 30 can be reduced, and the convenience of the user when cleaning can be improved. In addition, the restrictions on the parts layout can be reduced. In addition, since the convex shape of the inner lid 17 can be reduced, it is possible to prevent the heated object from being caught or caught during cleaning. The pressure reducing valve 31 and the safety valve 34 may be provided adjacent to each other. The pressure reducing valve 31 and the safety valve 24 may be interchanged. In this case too, the passage 18 can be shared, thereby reducing the size, number of parts, and manufacturing costs of the valve unit 30, while improving convenience for the user when performing maintenance.

[0061] In the valve unit 30 of this embodiment, the safety valve 34 is provided inside the pressure reducing valve 31. The pressure reducing valve 31 is configured to be initially open. As a result, even if a malfunction occurs in the drive means or drive mechanism for driving the valve body 32 of the pressure reducing valve 31, the passage 18 is not blocked and the pressure inside the container 14 does not increase, thereby improving safety.

[0062] 8 is a schematic diagram showing another example of the configuration of the valve unit 30 of the cooker 10. The valve unit 30 is an integral configuration of a pressure reducing valve 31, which is a second valve, and a safety valve 34, which is a first valve. The valve unit 30 is provided midway along the passage 18 that runs from the inner lid exhaust hole 19 of the inner lid 17 to the exhaust hole 16 of the lid 12, and is provided to release steam generated inside the container 14 to the outside.

[0063] The pressure reducing valve 31 includes a valve body 32 that is movable in the vertical direction, and a pressure reducing valve spring 33 that urges the valve body 32 upward. The pressure reducing valve spring 33 is provided between the valve body 32 of the pressure reducing valve 31 and the valve body 35 of the safety valve 34, and has an urging force that is greater than or equal to the weight of the valve body 32 and the pressure applied to the valve body 32. This allows the pressure reducing valve 31 to be configured to be in an open state in the initial state, thereby improving safety. The safety valve 34 includes a valve body 35 that is movable in the vertical direction, and a safety valve spring 36 that urges the valve body 35 upward. The safety valve spring 36 has an urging force that is greater than or equal to the weight of the valve body 35 and the pressure applied to the valve body 35. This allows the safety valve 34 to be configured to be in an open state in the initial state, thereby improving safety. In the valve unit 30 shown in Figures 7A, 7B, and 7C, the safety valve 34 is provided inside the pressure reducing valve 31, but in the valve unit 30 shown in this figure, the safety valve 34 is provided outside the pressure reducing valve 31.

[0064] In the initial state, a flow path 85 between the valve body 32 of the pressure reducing valve 31 and the valve body 35 of the safety valve 34 is opened by the pressure reducing valve spring 33, or a flow path 84 below the valve body 35 of the safety valve 34 is opened by the safety valve spring 36. The safety valve 34 may be configured to open the flow path 84 in the initial state by the valve body 35 being urged downward by the safety valve spring 36, or may be configured to close the flow path 84 in the initial state by adjusting the spring pressure of a central safety valve spring 86 provided between the outer shell 95 and the valve body 32 of the pressure reducing valve 31. When the outer shell 95 is pushed down, the valve element 32 of the pressure reducing valve 31 moves to the lowest position by the central safety valve spring 86 provided between the outer shell 95 and the valve element 32 of the pressure reducing valve 31, and the valve element 35 of the safety valve 34 moves to the lowest position by the spring 99 provided between the outer shell 95 and the valve element 35 of the safety valve 34 and the valve element 32 of the pressure reducing valve 31. In this closed state, the pressure reducing valve 31 and the safety valve 34 close the flow path 85 and the flow path 84. When the force pushing down the outer shell 95 is weakened, the valve element 32 of the pressure reducing valve 31 moves upward, creating a gap between it and the valve element 35 of the safety valve 34, and the flow path 85 is opened. When the pressure inside the container 14 exceeds the safety valve opening pressure value, the valve element 35 of the safety valve 34 moves upward, overcoming the downward force acting on the valve element 35 of the safety valve 34 and the valve element 32 of the pressure reducing valve 31 (the biasing force of the central safety valve spring 86 and the force pushing down the outer shell 95). In this safety valve operating state (FIG. 8), the safety valve 34 opens the flow path 84. As a result, the steam inside the container 14 passes through the flow path 84 that constitutes a part of the passage 18 and is exhausted to the outside from the exhaust hole 16, as shown by the arrow in FIG. 8, so that the pressure inside the container 14 is reduced.

[0065] This configuration also reduces the size, number of parts, and manufacturing cost of the valve unit 30. In addition, since the passage 18 can be shared, the size, number of parts, and manufacturing cost of the valve unit 30 can be reduced, and the convenience for the user when cleaning can be improved. In addition, restrictions on the layout of parts can be reduced. In addition, since the convex shape of the inner lid 17 can be reduced, it is possible to prevent the heated object from getting caught or the object from getting caught during cleaning.

[0066] [3-2. Operation] The operation and function of cooking appliance 10 configured as above are similar to those of the first embodiment.

[0067] [3-3. Effects, etc.] As described above, in this embodiment, cooking appliance 10 includes container 14 for accommodating an object to be heated, a heating unit for heating container 14 or the inside of container 14, safety valve 34 provided in passage 18 for releasing steam generated inside container 14 to the outside and for releasing pressure when the pressure inside container 14 exceeds a safety valve opening pressure value, and pressure reducing valve 31 provided in passage 18 for controlling the pressure inside container 14, with safety valve 34 and pressure reducing valve 31 being integrally configured. This makes it possible to reduce the size, number of parts, and manufacturing costs of cooking appliance 10.

[0068] Furthermore, in the present embodiment, cooking appliance 10 includes a pressure control unit that controls the pressure inside container 14 by controlling the opening and closing of pressure reducing valve 31. This makes it possible to appropriately control the pressure inside container 14.

[0069] Furthermore, in the present embodiment, safety valve 34 is provided on the outside of pressure reducing valve 31. This makes it possible to reduce the size and cost of cooker 10, and also makes it possible to improve the safety of cooker 10.

[0070] In the present embodiment, the safety valve 34 and the pressure reducing valve 31 are opened and closed by vertical movement of the valve body, which makes it possible to reduce the size of the cooker 10, the number of parts, and the manufacturing cost.

[0071] In this embodiment, the first valve is a safety valve 34 that releases pressure when the pressure inside the container 14 exceeds a safety valve opening pressure value, and the second valve is a pressure reducing valve 31 that lowers the pressure inside the container 14 in an open state and increases the pressure inside the container 14 in a closed state. The first valve may be a pressure regulating valve that releases pressure when the pressure inside the container 14 exceeds a pressure regulating valve opening pressure value that is lower than the safety valve opening pressure value. The second valve may be a safety valve or a pressure regulating valve. This allows the pressure inside the container 14 to be appropriately controlled.

[0072] In this embodiment, pressure reducing valve 31 is configured such that valve element 32 is biased to close passage 18, and passage 18 is opened by mechanically or manually moving valve element 32 of pressure reducing valve 31, and safety valve 34 is configured such that valve element 35 is biased to close passage 18, and when the pressure inside container 14 exceeds the biasing force, valve element 35 of safety valve 34 moves to release the pressure inside container 14. This makes it possible to reduce the size and cost of cooker 10, and to improve the safety of cooker 10.

[0073] In the present embodiment, pressure reducing valve 31 is configured so that passage 18 is opened when valve body 32 is moved upward, and safety valve 34 is configured so that passage 18 is opened when valve body 35 is moved upward. This makes it possible to reduce the size and cost of cooker 10, and to improve the safety of cooker 10.

[0074] Moreover, in the present embodiment, the safety valve 34 is provided inside the pressure reducing valve 31. This makes it possible to reduce the size and cost of the cooker 10, and also to improve the safety of the cooker 10.

[0075] In the present embodiment, the safety valve 34 and the pressure reducing valve 31 are opened and closed by vertical movement of the valve body, which makes it possible to reduce the size of the cooker 10, the number of parts, and the manufacturing cost.

[0076] In this embodiment, the first valve is a safety valve 34 that releases pressure when the pressure inside the container 14 exceeds a safety valve opening pressure value, and the second valve is a pressure reducing valve 31 that lowers the pressure inside the container 14 in an open state and increases the pressure inside the container 14 in a closed state. The first valve may be a pressure regulating valve that releases pressure when the pressure inside the container 14 exceeds a pressure regulating valve opening pressure value that is lower than the safety valve opening pressure value. The second valve may be a safety valve or a pressure regulating valve. This allows the pressure inside the container 14 to be appropriately controlled.

[0077] In this embodiment, pressure reducing valve 31 is configured such that valve element 32 is biased to open passage 18, and passage 18 is closed by mechanically or manually moving valve element 32 of pressure reducing valve 31, and safety valve 34 is configured such that valve element 35 is biased to close passage 18, and when the pressure inside container 14 exceeds the biasing force, valve element 35 of safety valve 34 moves to release the pressure inside container 14. This makes it possible to reduce the size and cost of cooker 10, and to improve the safety of cooker 10.

[0078] In this embodiment, pressure reducing valve 31 is configured so that passage 18 is closed when valve body 32 is moved downward, and safety valve 34 is configured so that passage 18 is opened when valve body 35 is moved upward. This makes it possible to reduce the size and cost of cooker 10, and to improve the safety of cooker 10.

[0079] (Other embodiments) As described above, the first to third embodiments have been described as examples of the technology disclosed in the present application. However, the technology in the present disclosure is not limited to these, and can be applied to embodiments in which modifications, substitutions, additions, omissions, etc. are made. In addition, it is also possible to combine the components described in the first to third embodiments to create new embodiments.

[0080] In any of the valve units of the first to third embodiments, one or more pressure reducing valves, one or more pressure regulating valves, and one or more safety valves may be provided in any combination. The first valve that releases the pressure when the pressure inside the container 14 exceeds a predetermined value may be a safety valve or a pressure regulating valve. The second valve for controlling the pressure inside the container 14 may be a pressure reducing valve or a pressure regulating valve. All the valves may be provided coaxially, or at least some of the valves may be provided adjacent to each other. The arrangement order from the outside of the multiple valves provided coaxially may also be arbitrary.

[0081] When a valve body such as a pressure reducing valve, a pressure adjusting valve, or a safety valve is manually moved to discharge steam inside the container 14 to the outside, the cooker 10 may receive instructions from a user via a user interface provided in the cooker 10. FIG. 9 shows an example of a user interface of the cooker 10. The user interface includes an input unit 53 including buttons for receiving instruction input from the user, and a display unit 54 for displaying various information. The cooker 10 may receive an operation instruction for a driving means such as a stepping motor from the user via the button of the input unit 53, and may move the valve body by controlling the driving means according to the operation instruction. At this time, the cooker 10 may display the amount of steam discharged, etc. on the display unit 54 so that the user can adjust the amount of exhaust while visually checking the amount of exhaust, etc. This allows the user to open and close the valve at any timing and speed, so that exhaust can be performed safely and quickly without overflow after cooking.

[0082] (Additional Note) The above description of the embodiments discloses the following techniques. (Technology 1) A container for accommodating an object to be heated; A heating unit that heats the container or the inside of the container; a first valve provided in a passage for releasing steam generated inside the container to the outside, the first valve releasing pressure when the pressure inside the container exceeds a predetermined value; a second valve disposed in the passage for controlling the pressure inside the container; Equipped with The first valve and the second valve are integrally configured. Cooker. This configuration allows the size, number of parts, and manufacturing costs of cooking appliance 10 to be reduced. (Technology 2) a pressure control unit that controls the pressure inside the container by controlling the opening and closing of the second valve; The cooker according to claim 1. This configuration allows the pressure inside the container 14 to be appropriately adjusted. (Technology 3) The first valve is provided outside the second valve. The cooker according to claim 1 or 2. With this configuration, the size and cost of cooking appliance 10 can be reduced, and the safety of cooking appliance 10 can be improved. (Technology 4) The first valve and the second valve are opened and closed by vertical movement of a valve body. A cooker as described in technique 3. This configuration allows the size, number of parts, and manufacturing costs of cooking appliance 10 to be reduced. (Technology 5) the first valve is a safety valve that releases pressure when the pressure inside the container exceeds a safety valve opening pressure value, or a pressure regulating valve that releases pressure when the pressure inside the container exceeds a pressure regulating valve opening pressure value that is lower than the safety valve opening pressure value, The second valve is a pressure reducing valve that reduces the pressure inside the container when open and increases the pressure inside the container when closed, or the safety valve or the pressure regulating valve. The cooker according to claim 3 or 4. This configuration allows the pressure inside the container 14 to be appropriately controlled. (Technology 6) The second valve is configured such that a valve body is biased to close the passage, and the passage is opened by mechanically or manually moving the valve body of the second valve, The first valve is configured such that a valve body is biased to close the passage, and when the pressure inside the container exceeds the biasing force, the valve body of the first valve moves to release the pressure inside the container. A cooker according to any one of claims 3 to 5. With this configuration, the size and cost of cooking appliance 10 can be reduced, and the safety of cooking appliance 10 can be improved. (Technology 7) the second valve is configured such that the passage is opened by a valve body being moved downward; The first valve is configured such that the passage is opened by moving a valve body upward. A cooker as described in technique 6. With this configuration, the size and cost of cooking appliance 10 can be reduced, and the safety of cooking appliance 10 can be improved. (Technology 8) The first valve is provided inside the second valve. The cooker according to claim 1 or 2. With this configuration, the size and cost of cooking appliance 10 can be reduced, and the safety of cooking appliance 10 can be improved. (Technology 9) The first valve and the second valve are opened and closed by vertical movement of a valve body. A cooker as described in technique 8. This configuration allows the size, number of parts, and manufacturing costs of cooking appliance 10 to be reduced. (Technology 10) the first valve is a safety valve that releases pressure when the pressure inside the container exceeds a safety valve opening pressure value, or a pressure regulating valve that releases pressure when the pressure inside the container exceeds a pressure regulating valve opening pressure value that is lower than the safety valve opening pressure value, The second valve is a pressure reducing valve that reduces the pressure inside the container when open and increases the pressure inside the container when closed, or the safety valve or the pressure regulating valve. A cooker according to claim 8 or 9. This configuration allows the pressure inside the container 14 to be appropriately controlled. (Technology 11) The second valve is configured such that a valve body is biased to open the passage, and the passage is closed by mechanically or manually moving the valve body of the second valve; The first valve is configured such that a valve body is biased to close the passage, and when the pressure inside the container exceeds the biasing force, the valve body of the first valve moves to release the pressure inside the container. A cooking device according to any one of claims 8 to 10. With this configuration, the size and cost of cooking appliance 10 can be reduced, and the safety of cooking appliance 10 can be improved. (Technology 12) the second valve is configured such that the passage is closed by moving a valve body upward; The first valve is configured such that the passage is opened by moving a valve body upward. A cooker as described in technique 11. With this configuration, the size and cost of cooking appliance 10 can be reduced, and the safety of cooking appliance 10 can be improved. [Industrial Applicability]

[0083] The present invention can be used in a cooking appliance. [Explanation of symbols]

[0084] 10...Cooker 11...Main body 12…Lid 13…Handle 14...Container 15...Mixing blade 16…Exhaust hole 17…Inner lid 18...Aisle 19…Inner lid exhaust hole 20...Valve unit 21...Reducing valve 22...Valve body 23...Reducing valve spring 24...Safety valve 25…Valve body 26…Safety valve spring 27...Pressure adjusting valve 28…Valve body 29…Pressure regulator spring 30...Valve unit 31...Reducing valve 32...Valve body 33...Reducing valve spring 34…Safety valve 35…Valve body 36…Safety valve spring 53...Input section 54...Display section 81...Flow path 82...Flow path 83...Flow path 84...Flow path 85...Flow path 86…Central safety valve spring 88…Nozzle fixing spring 89…Fixing nut 90…Cover 91...hole 92…hole 93…Seal part 94…range 95…Outer shell 96…Opening 97…Pedestal 98...Aisle 99…Spring

Claims

1. A container for accommodating an object to be heated; A heating unit that heats the container or the inside of the container; a first valve provided in a passage for releasing steam generated inside the container to the outside, the first valve releasing pressure when the pressure inside the container exceeds a predetermined value; a first spring biasing the first valve; a second valve disposed in the passage for controlling the pressure inside the container; a second spring biasing the second valve; a pressure control unit that controls the pressure inside the container by controlling the opening and closing of the second valve; Equipped with the first valve and the second valve are integrally constructed, The first spring and the second spring are provided so as to overlap at least partially in a height direction. Cooker.

2. The first valve is provided outside the second valve. The cooking device according to claim 1 .

3. The first valve and the second valve are opened and closed by vertical movement of a valve body. The cooking device according to claim 2.

4. the first valve is a safety valve that releases pressure when the pressure inside the container exceeds a safety valve opening pressure value, or a pressure regulating valve that releases pressure when the pressure inside the container exceeds a pressure regulating valve opening pressure value that is lower than the safety valve opening pressure value, The second valve is a pressure reducing valve that reduces the pressure inside the container when open and increases the pressure inside the container when closed, or the safety valve or the pressure regulating valve. The cooking device according to claim 2.

5. the second valve is configured such that a valve body is biased to close the passage, and the passage is opened by mechanically or manually moving the valve body of the second valve; The first valve is configured such that a valve body is biased to close the passage, and when the pressure inside the container exceeds the biasing force, the valve body of the first valve moves to release the pressure inside the container. The cooking device according to claim 4.

6. the second valve is configured such that the passage is opened by a valve body being moved downward; The first valve is configured such that the passage is opened by moving a valve body upward. The cooking device according to claim 5.

7. The first valve is provided inside the second valve. The cooking device according to claim 1 .

8. The first valve and the second valve are opened and closed by vertical movement of a valve body. The cooking device according to claim 7.

9. the first valve is a safety valve that releases pressure when the pressure inside the container exceeds a safety valve opening pressure value, or a pressure regulating valve that releases pressure when the pressure inside the container exceeds a pressure regulating valve opening pressure value that is lower than the safety valve opening pressure value, The second valve is a pressure reducing valve that reduces the pressure inside the container when open and increases the pressure inside the container when closed, or the safety valve or the pressure regulating valve. The cooking device according to claim 7.

10. The second valve is configured such that a valve body is biased to open the passage, and the passage is closed by mechanically or manually moving the valve body of the second valve; The first valve is configured such that a valve body is biased to close the passage, and when the pressure inside the container exceeds the biasing force, the valve body of the first valve moves to release the pressure inside the container.

10. The cooking device according to claim 9.

11. the second valve is configured such that the passage is closed by a valve body being moved downward; The first valve is configured such that the passage is opened by moving a valve body upward. The cooking device according to claim 10.

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