JP2021159125A - rice cooker - Google Patents

Abstract

To provide a rice cooker in which a structure of a lid for closing an opening portion of a pan is made simple and lightweight, and whose handling can be facilitated.SOLUTION: A pressure regulating opening/closing valve mechanism included in a lid body in a rice cooker comprises: a valve seat 12 provided in a lid 5 fitted to the lid body, and having a valve hole 12a that is an opening communicating with the inside of a pan; and a valve element 21 provided in the lid body opposed to the lid 5, constituted so as to be movable in a separating/approaching direction with respect to the valve seat 12, and for controlling pressure on the inside of the pan by opening/closing the valve hole 12a.SELECTED DRAWING: Figure 10

Description

The present disclosure relates to a rice cooker, particularly a pressure type rice cooker that cooks rice under pressure in a pot.

As a rice cooker, a rice cooker having a configuration in which the pressure in the pot during the rice cooking operation is increased to atmospheric pressure or higher to perform the rice cooking operation at a high pressure is provided. In such a rice cooker, the pressure in the pot is suddenly lowered to the vicinity of the atmospheric pressure in the middle of the high-pressure rice cooking operation, and a violent boiling phenomenon, a so-called bumping phenomenon, is generated in the pot, so that the rice is delicious without uneven cooking. It is known to cook rice (see Patent Document 1).

Japanese Unexamined Patent Publication No. 2015-202304

As described above, the rice cooker is provided with a pressure adjusting mechanism for adjusting the pressure in the pot in order to cook delicious rice without uneven cooking. As a pressure adjusting mechanism, a pressure regulating valve that keeps the pressure in the pot constant, for example, 20 kPa, and an on-off valve that forcibly discharges steam in the pot at the end of rice cooking operation or for the purpose of reducing the pressure in the pot. , When the pressure inside the pot rises above the specified level due to a defective pressure regulating valve, etc., the inside of the pot is opened to prevent the rice cooker from being destroyed, and the pressure inside the pot is lowered. In the steam passage through which the steam generated inside flows, a check valve that recirculates the "oneba" that has risen with the steam into the pot during the steaming of the rice cooking operation is included.

In the conventional rice cooker, a pressure adjusting mechanism including at least four valve mechanisms of a pressure regulating valve, an on-off valve, a safety valve, and a check valve has been provided. Such a pressure adjusting mechanism is provided on a lid that closes the opening of the top surface (upper part) of the pot housed in the rice cooker and substantially seals the inside of the pot. The lid is detachably provided on a lid that rotates with respect to the rice cooker body that houses the pot. The lid provided with the pressure adjusting mechanism as described above is configured to be removed from the rice cooker and washed together with the pot in which the cooked rice is cooked. Therefore, a structure that can be easily washed is a preferable structure for the user, and simplification and weight reduction of the structure of the lid are important issues for realizing ease of handling.

In addition, in a conventional pressure-type rice cooker equipped with a pressure adjustment mechanism, in order to perform high-pressure rice cooking operation, it is necessary to lock the lid to the rice cooker body with a sturdy frame for the purpose of ensuring safety and reliability. There was also a problem in terms of weight and size. Furthermore, according to the provisions of the Safety Law, it is necessary to provide a special mechanism so that the lid cannot be opened when a pressure of 5 kPa or more remains in the pot, which complicates the structure and is easy to handle. Had a problem with.

An object of the present disclosure is to provide a rice cooker capable of achieving simplification and weight reduction of the structure of a lid that closes an opening portion of a pot and realizing ease of handling.

One aspect of the rice cooker according to the present disclosure is
A pot with an open top to store food to be cooked
A rice cooker body having a pot accommodating portion capable of accommodating the pot,
A lid for closing the opening of the top surface of the pot, and a lid to which the lid is attached and which can be locked to the rice cooker body so as to close the pot housed in the rice cooker body are provided. It ’s a rice cooker
The lid body is provided with a pressure regulating on-off valve mechanism.
The pressure regulating on-off valve mechanism is
A valve seat provided on the lid and having a valve hole which is an opening communicating with the inside of the pot.
It includes a valve body provided on the lid body facing the lid, which is configured to be movable in a detachable direction with respect to the valve seat and opens and closes the valve hole to control the pressure inside the pot.

According to the present disclosure, it is possible to achieve weight reduction with a simple configuration of a lid that closes an opening portion of a pot, and to provide a rice cooker that is easy to handle.

A perspective view showing the appearance of the pressure-type rice cooker according to the first embodiment according to the present disclosure. The figure which shows the lid body in the pressure type rice cooker of Embodiment 1. A perspective view of the lid of the pressure-type rice cooker according to the first embodiment as viewed from diagonally above. Top view of the lid in the pressure type rice cooker of the first embodiment Bottom view of the lid in the pressure-type rice cooker of the first embodiment Sectional view of the lid shown in FIG. 4 cut along the VI-VI line. Top view showing the internal structure of the lid body in the pressure type rice cooker of the first embodiment by removing the cover and the like on the upper surface of the lid body. An exploded perspective view of the internal configuration shown in FIG. 7. An exploded perspective view showing a configuration of a pressure adjusting opening / closing unit in the pressure type rice cooker of the first embodiment. End view schematically showing the opening / closing operation of the pressure adjusting opening / closing unit in the pressure type rice cooker of the first embodiment. A perspective view of the state in which the pot is connected to the lid body in which the cover on the upper surface is removed, as viewed from diagonally above. A perspective view of the state in which the pot is connected to the lid body in which the cover on the upper surface is removed, as viewed from diagonally below. In the pressure type rice cooker of the first embodiment, a perspective view of a sandwiching unit in a state where the pot and the lid are not sandwiched, viewed from diagonally above. In the pressure type rice cooker of the first embodiment, a perspective view of a sandwiching unit in a state where the pot and the lid are not sandwiched, viewed from diagonally below. An exploded perspective view of the sandwiching unit with the pot and lid not sandwiched from diagonally above. An exploded perspective view of the sandwiching unit with the pot and lid not sandwiched from diagonally below. An exploded perspective view of the sandwiching unit shown in FIG. 15 further disassembled. The figure explaining the operation of the sandwiching unit in the pressure type rice cooker of Embodiment 1. In the pressure type rice cooker of the first embodiment, a waveform diagram schematically showing a transition of pressure in a normal rice cooking operation, an opening / closing timing of a pressure adjusting opening / closing unit, and power consumption.

Hereinafter, a pressure-type rice cooker will be described as a specific embodiment of the rice cooker of the present disclosure with reference to the attached drawings. The rice cooker of the present disclosure is not limited to the configuration of the pressure-type rice cooker described in the following embodiments, and is equivalent to the technical idea having the technical features described in the following embodiments. It includes the configuration of a rice cooker based on technology.

In addition, the numerical values, shapes, configurations, steps (processes, modes), steps, and the like shown in the following embodiments are examples, and the invention is not limited to the contents of the present disclosure. Among the components in the following embodiments, the components not described in the independent claims indicating the highest level concept are described as arbitrary components. In the drawings, each component is schematically shown for easy understanding.

In the description of the following embodiments, for convenience of explanation, terms indicating directions such as "top", "bottom", "left", "right", "front", and "rear" may be used. These terms do not mean to limit the usage state of the rice cooker which is the cooking device of the present disclosure.

First, various aspects of the rice cooker of the present disclosure will be illustrated.
The rice cooker of the first aspect according to the present disclosure is
A pot with an open top to store food to be cooked
A rice cooker body having a pot accommodating portion capable of accommodating the pot,
A lid for closing the opening of the top surface of the pot and a lid to which the lid is attached and which can be locked to the rice cooker body so as to close the pot housed in the rice cooker body are provided. It ’s a rice cooker
The lid body is provided with a pressure regulating on-off valve mechanism.
The pressure regulating on-off valve mechanism is
A valve seat provided on the lid and having a valve hole which is an opening communicating with the inside of the pot.
It includes a valve body provided on the lid body facing the lid, which is configured to be movable in a detachable direction with respect to the valve seat and opens and closes the valve hole to control the pressure inside the pot. In the rice cooker of the first aspect configured in this way, it is possible to reduce the weight of the lid that closes the opening portion of the pot with a simple configuration, and it is possible to reduce the size and weight of the lid. Therefore, it is possible to provide a rice cooker that is easy to handle.

In the rice cooker of the second aspect according to the present disclosure, the lid of the first aspect has a "oneba" holding area for storing the "oneba" that recirculates inside the pot.
The valve hole may be formed at the lowest point position in the vertical direction in the "neba" holding region. In the rice cooker of the second aspect configured in this way, the "oneba" stored in the "oneba" holding area from the steam passage is formed at the lowest point position in the vertical direction in the "oneba" holding area. The check valve can be reliably recirculated into the pot from the valve hole, and the check valve, which is required in the conventional configuration, can be made unnecessary.

The rice cooker of the third aspect according to the present disclosure has a valve body pressure-contact portion in which the valve body protrudes in a direction facing the valve seat in the first or second aspect, and the valve body. The pressure contact portion comes into contact with the valve seat to enter the closed state of the pressure adjusting on-off valve mechanism, and the closed state can be maintained even if the lid fluctuates with respect to the lid body in the closed state. It may be composed of an elastic body. In the rice cooker of the third aspect configured as described above, a highly reliable closed state can be formed by the pressure regulating on-off valve mechanism.

In the rice cooker of the fourth aspect according to the present disclosure, in any one of the first to third aspects described above, a filter plate having a plurality of holes smaller than rice grains is provided on the valve seat, and the rice cooker is provided from the pot. The rice grain may be configured so as not to pass through the valve hole. In the rice cooker of the fourth aspect configured as described above, it is possible to prevent foreign substances such as rice grains from being mixed into the steam passage in the lid from the inside of the boiling pot.

In the rice cooker of the fifth aspect according to the present disclosure, in any one of the first to fourth aspects, the separation direction in which the valve body moves with respect to the valve seat is the inside of the pot. The lid may be configured to lift with respect to the pot when the pressure of the rice cooker increases. In the rice cooker of the fifth aspect configured in this way, as the pressure rises, the lid is lifted and moves so as to be close to the facing surfaces of the lid, so that the closed state of the pressure adjusting on-off valve mechanism is ensured. It will be a configuration that is maintained at.

The rice cooker of the sixth aspect according to the present disclosure includes a pressure detecting unit for detecting the pressure inside the pot in any one of the first to fifth aspects described above.
It may be configured to control the movement of the valve body based on the signal from the pressure detecting unit to control the pressure inside the pot. In the rice cooker of the sixth aspect configured in this way, the pressure in the pot can be adjusted by the pressure regulating on-off valve mechanism, and the pressure regulating valve required in the conventional configuration can be abolished. Further, in the rice cooker of the sixth aspect, since the pressure in the pot can be controlled by the pressure adjusting on-off valve mechanism, the taste of the cooked rice produced by the rice cooking operation can be significantly improved.

(Embodiment 1)
Hereinafter, the pressure-type rice cooker according to the first embodiment according to the present disclosure will be described with reference to the drawings. FIG. 1 is a perspective view showing the appearance of the pressure-type rice cooker 1 of the first embodiment. The pressure-type rice cooker 1 of the first embodiment is a rice cooker that cooks rice by setting the pressure in the pot to a pressurized state of atmospheric pressure or more, for example, 1.2 atm or more at the time of cooking rice. In the description of the first embodiment, the vertical direction of the pressure-type rice cooker in the state shown in FIG. 1 will be described as the vertical position.

The pressure-type rice cooker 1 of the first embodiment has a rice cooker main body 2 having a bottomed bottom and a substantially tubular pot accommodating portion having an open top surface (upper portion), and a top surface portion of the pot accommodating portion of the rice cooker main body 2. It includes a lid 3 configured to open and close the opening portion. The pot accommodating portion of the rice cooker main body 2 is configured to be capable of storing a pot 4 (see FIGS. 11 and 12) in which an object to be cooked such as rice or water is placed.

The lid 3 is connected to the rice cooker main body 2 so as to be openable and closable via a hinge mechanism. The lid 3 is provided with a lid 5 that substantially seals the upper opening, which is the opening of the top surface of the pot 4 housed in the rice cooker main body 2. The lid 5 is configured to be removable from the lid body 3, and the lid 5 can be removed from the lid body 3 and washed.

The lid 3 is constantly urged with respect to the rice cooker main body 2 in the opening direction. In order for the lid 3 to lock to the rice cooker main body 2 and maintain the closed state, the rice cooker main body 2 and the lid 3 are provided with a locking mechanism. On the upper surface of the lid 3, a hook button 6 is provided for opening the lid 3 with respect to the rice cooker main body 2 to expose the upper opening of the pot 4. By pressing the hook button 6, the locking mechanism of the lid 3 is disengaged from the rice cooker main body 2, and the lid 3 rotates.

Further, on the upper surface of the lid 3, an operation unit 7 for setting the rice cooking conditions of the rice cooker, a display unit 8 for displaying various information such as the selected rice cooking course, the rice cooking time, and the rice cooking operation state, and the rice cooking operation A steam tank portion 10 or the like having a steam discharge port 9 that sometimes discharges steam is provided. The steam tank portion 10 is removable from the lid body 3.

In the pressure-type rice cooker of the first embodiment according to the present disclosure, the "pressure adjusting on-off valve mechanism" for adjusting the pressure inside the pot 4 and the state of connection between the pot 4 and the lid 5 during the high-pressure rice cooking operation are set. The lid 3 is provided with an "automatic sandwiching mechanism" for holding and maintaining the high pressure state inside the pot 4.

Hereinafter, the configurations of the "pressure adjusting on-off valve mechanism" and the "automatic sandwiching mechanism" provided on the lid 3 of the pressure-type rice cooker of the first embodiment will be described in detail. The other configurations of the pressure-type rice cooker of the first embodiment have configurations that are normally provided in the rice cooker, but detailed description of these configurations will be omitted in the present disclosure. As another configuration, for example, the rice cooker main body 2 opened and closed by the lid 3 has a configuration capable of accommodating the pot 4, and the contained pot 4 and the lid 5 are subjected to induction heating or the like. It is possible to cook using a controllable heating source, and control the heating source etc. in the control unit (not shown) based on various information from the temperature sensor, pressure sensor, etc. to execute effective rice cooking operation. It has a similar structure. In the pressure type rice cooker of the first embodiment, a member that substantially seals the upper opening of the pot 4 housed in the rice cooker main body 2 and can be attached to the lid 3 will be described as the lid 5. The lid 5 also functions as a heating source, for example, a heating plate having a structure that can be heated by induction heating.

In the pressure type rice cooker of the first embodiment, the temperature sensor for detecting the temperature inside the pot 4 closed by the lid 5 is, for example, provided in the rice cooker main body 2 and is provided at the bottom of the pot 4. A bottom temperature sensor that detects the temperature of the rice cooker and a lid temperature sensor that is provided on the lid 3 and detects the temperature inside the pot through the lid 5 are used. The pressure detection unit, which is a pressure sensor, detects the pressure inside the pot 4. Based on various information from these sensors, time information, rice cooking setting conditions, etc., the control unit (not shown) in the pressure-type rice cooker of the first embodiment is a heating source, and each element such as a "pressure adjusting on-off valve mechanism". Is optimally controlled. Further, the valve hole 12a described later may be opened and closed by the lid temperature sensor. In the pressure-type rice cooker of the first embodiment, as will be described later, the pot lid sandwiching information indicating whether or not the pot 4 and the lid 5 from the "automatic sandwiching mechanism" are sandwiched is the control unit. It is sent to and used to control the rice cooking operation.

[Closure structure]
FIG. 2 is a view showing a lid 3 in the pressure type rice cooker of the first embodiment, and is a bottom view (back view) of the lid 3 as viewed from the inner surface side, that is, the rice cooker main body 2 side. As shown in FIG. 2, a disk-shaped lid 5 is attached to the lid 3. The lid 5 covers the upper opening of the pot 4 housed in the pot accommodating portion of the rice cooker main body 2 facing each other, and is arranged at a position where the inside of the pot 4 can be substantially sealed.

FIG. 3 is a perspective view of the lid 5 viewed from diagonally above. FIG. 4 is a top view of the lid 5, and FIG. 5 is a bottom view (back view) of the lid 5. As shown in FIGS. 3 to 5, the lid 5 has a substantially disk shape, and has a dish shape in which the inside thereof is recessed. A substantially triangular "neba" holding region 11 is formed in the flat portion of the central portion of the lid 5. In the present embodiment, the "oneba" holding region 11 will be described with a substantially triangular configuration example, but the rice cooker of the present disclosure is not specified in this shape, and has a round shape and a square shape. Various shapes such as shapes and polygonal shapes can be applied. The "oneba" holding region 11 may be configured to receive and hold the "oneba" separated from the steam in the steam tank portion 10 provided on the lid 3. In the configuration of the first embodiment, the "neba" holding region 11 is surrounded by the groove 11a, and is parallel to the inner peripheral side and the outer peripheral side of the groove 11a upward (toward the upper surface of the lid 3). Side walls (11b, 11c) protruding from the wall are formed. In particular, when the lid 5 is attached to the lid body 3, the side wall 11c on the outer peripheral side comes into contact with the lid facing plate 25 (see FIGS. 7 and 8) arranged to face the lid 5 in the lid body 3. , A partition wall that defines a "neba" holding space that specifies the "oneba" holding area 11. Since the "neba" holding space for specifying the "oneba" holding area 11 is formed, the "oneba" does not leak to the outside from the "oneba" holding area 11.

Further, the "oneba" holding region 11 is provided with a concave valve seat 12 and a safety valve 13 that form a part of the pressure adjusting opening / closing unit 20 described later. The safety valve 13 is activated instantly when the pressure inside the pot 4 rises above a specified value to release the pressure inside the pot 4 and ensure the safety of the rice cooker.

As shown in FIGS. 3 and 4, a valve hole 12a is formed in the center of the valve seat 12 provided in the “neba” holding region 11, and the valve body is driven by the pressure adjusting opening / closing unit 20 described later. The valve hole 12a is controlled to open and close by 21 (see FIG. 9). On the back surface side (pot 4 side: see FIG. 5) of the valve hole 12a, a filter plate 14 having a plurality of small holes formed is arranged. The filter plate 14 prevents the bumping rice grains from flowing into the valve hole 12a during the rice cooking operation. Therefore, the filter plate 14 has a plurality of holes smaller than the rice grains so that foreign matter such as rice grains from the pot does not pass through the valve holes 12a. By providing the filter plate 14 in this way, it is possible to prevent foreign matter such as rice grains from flowing from the inside of the pot 4 into the steam passage of the lid 3 in the opened state of the pressure adjusting opening / closing unit 20.

The valve hole 12a formed in the center of the valve seat 12 has a function of circulating the “oneba” stored in the “oneba” holding region 11 inside the pot 4, as will be described later. During the rice cooking operation, the vertical position of the valve hole 12a is formed to be the lowest point position in the "oneba" holding region 11. Therefore, when the valve hole 12a is opened, the "oneba" stored in the "oneba" holding region 11 surely flows down from the valve hole 12a into the pot 4.

FIG. 6 is a view showing a cross section of the “neba” holding region 11 in the lid 5 shown in FIG. 4 cut by the VI-VI line. As shown in FIG. 6, in the "neba" holding region 11, the periphery of the opening of the valve hole 12a is such that the "neba" received from the steam tank portion 10 surely flows toward the valve hole 12a. It is formed by a slope.

[Pressure control on-off valve mechanism]
In the pressure-type rice cooker of the first embodiment, the lid 3 is provided with a pressure-regulating on-off unit 20 of a pressure-regulating on-off valve mechanism that functions integrally with the valve hole 12a provided in the lid 5. ..

FIG. 7 is a plan view showing the internal configuration of the lid 3 in the pressure-type rice cooker of the first embodiment by removing the cover and the like on the upper surface of the lid 3. FIG. 7 mainly shows the “pressure adjusting on-off valve mechanism” and the “automatic pinching mechanism” described later in the pressure-type rice cooker of the first embodiment, and other configurations are omitted. FIG. 8 is an exploded perspective view of the internal configuration shown in FIG. 7.

As shown in FIGS. 7 and 8, in the lid body 3, a lid facing plate 25 is provided so as to cover the upper part of the attached lid 5, and the “neba” holding region 11 in the lid 5 is a lid facing plate. It is covered with 25 and formed in the "neba" holding space. The "neba" from the steam tank section 10 flows into the "neba" holding space of the "oneba" holding area 11.

Further, the lid facing plate 25 is provided with a pressure adjusting opening / closing unit 20 at a position facing the valve seat 12 of the lid 5. FIG. 9 is an exploded perspective view showing the configuration of the pressure adjusting opening / closing unit 20 provided on the lid facing plate 25. As shown in FIG. 9, the pressure adjusting opening / closing unit 20 is interlocked with the valve body 21 that moves in the detaching direction with respect to the valve seat 12 provided on the lid 5 to open / close the valve hole 12a. The on-off valve retainer 22, the on-off valve drive shaft 23 that moves the on-off valve retainer 22 in the axial direction, the on-off valve drive motor 24 that moves the on-off valve drive shaft 23, and the on-off valve drive motor 24 on the lid facing plate 25. An on-off valve mounting base 26 that is fixed and guides the moving direction of the on-off valve retainer 22 is provided.

In the pressure adjusting opening / closing unit 20 configured as described above, the on-off valve retainer 22 for fixing the valve body 21 is penetrated through the threaded threaded portion 23a of the on-off valve drive shaft 23, and the on-off valve retainer 22 A protrusion (engagement protrusion) 22b that engages with the screwed portion 23a is formed on the inner peripheral surface of the above. Further, the on-off valve retainer 22 opens and closes with the guide groove 22a of the on-off valve retainer 22 so that the on-off valve retainer 22 penetrates the on-off valve mounting base 26 and moves in the axial direction (vertical direction) and does not rotate inside the on-off valve mounting base 26. The guide rib 26a of the valve mounting base 26 is slidably engaged in the axial direction. Therefore, when the on-off valve drive shaft 23 is rotationally driven by the on-off valve drive motor 24, the on-off valve drive shaft 23 rotates and the on-off valve retainer 22 moves in the axial direction (vertical direction). That is, by rotating the on-off valve drive motor 24 in the forward / reverse direction, the valve body 21 moves in the axial direction (vertical direction) with respect to the valve seat 12 provided on the lid 5, and is adjusted. The opening / closing control of the pressure opening / closing unit 20 is performed. The separation / contact direction in which the valve body 21 moves with respect to the valve seat 12 is the direction in which the lid 5 is lifted with respect to the pot 4 when the pressure inside the pot 4 rises. Therefore, in the pressure adjusting on-off valve mechanism according to the first embodiment, the lid 5 rises in the direction of the lid 3 as the pressure inside the pot 4 rises, so that the pressure adjusting valve mechanism between the valve seat 12 and the valve body 21 The sealing performance is ensured and the configuration is highly reliable.

[Opening and closing operation of pressure adjustment switching unit]
FIG. 10 is an end view schematically showing the opening / closing operation of the pressure adjusting / opening / closing unit 20. FIG. 10 shows a state in which the lid 5 is attached to the lid body 3 and the lid 5 is arranged so as to face the lid facing plate 25. FIG. 10A shows an opened state of the pressure adjusting opening / closing unit 20, in which the valve body 21 is separated from the valve seat 12. FIG. 10B shows a closed state of the pressure adjusting opening / closing unit 20, and shows a state in which the valve body 21 moves toward the valve seat 12 and comes into contact with the valve seat 12. FIG. 10 (c) is the same as the closed state shown in FIG. 10 (b), but shows a state in which the lid 5 is slightly raised toward the lid facing plate 25 and the lid 5 is lifted. There is. In the transition from the state shown in FIG. 10 (b) to the state shown in FIG. 10 (c), the valve body 21 does not move, and the valve seat 12 of the lid 5 is the valve body 21 of the pressure adjusting opening / closing unit 20. It is in a state of slightly moving toward. The operation of the lid 5 slightly moving toward the lid facing plate 25 as described above is an operation that occurs during the high-pressure rice cooking operation, and is an operation related to the "automatic sandwiching mechanism" described later. The transition from the state shown in FIG. 10 (b) to the state shown in FIG. 10 (c) will be described in detail in the "automatic pinching mechanism".

The opened state shown in FIG. 10 (d) is the same as the opened state shown in FIG. 10 (a), and shows the state after the high-pressure rice cooking operation is completed. The movement of the valve body 21 that opens and closes the pressure adjusting opening / closing unit 20 is controlled based on information from a pressure sensor that is a pressure detecting unit that detects the pressure inside the pan 4.

As shown in FIGS. 10A to 10D, when the lid 5 is attached to the lid body 3, the outer peripheral side wall 11c defining the “neba” holding region 11 in the lid 5 is a lid facing plate. It is in contact with 25, and a "neba" holding space is formed by the "neba" holding area 11. Since the outer peripheral side wall 11c is made of an elastic member, when the lid 5 is attached to the lid 3, even if the lid 5 moves, it moves slightly in the vertical direction, for example, as shown in FIG. Even so, the contact state is maintained.

Further, as described above, in the state where the lid 5 is attached to the lid 3 and the rice cooking operation is performed, the flat portion of the central portion of the lid 5 is arranged in a substantially horizontal direction, and the flat portion thereof. The valve hole 12a of the valve seat 12 in the provided “oneba” holding region 11 is arranged at the lowest point position in the vertical direction. Therefore, if the valve hole 12a in the "oneba" holding area 11 is in the open state, the "oneba" stored in the "oneba" holding area 11 surely flows down to the pot 4 through the valve hole 12a. As a result, in the conventional configuration, the check valve required for circulating the "oneba" in the pan is no longer necessary in the configuration in the first embodiment, and the configuration of the lid 3 can be simplified. It is possible to achieve weight reduction, miniaturization, and ease of handling.

As described above, in the configuration of the pressure-type rice cooker of the first embodiment, since the pressure-regulating on-off valve mechanism is provided, the pressure-regulating valve, the on-off valve, and the reverse, which are used in the conventional pressure-type rice cooker, are used. It is no longer necessary to provide a plurality of complicated valve mechanisms such as a stop valve and a safety valve. In particular, the lid 5 in the first embodiment has a configuration in which only a valve seat having a simple structure is provided in addition to the essential safety valve, and the lid 5 is provided. The lid 3 to be mounted is configured to include the main part of the pressure adjusting on-off valve mechanism. As a result, in the pressure-type rice cooker of the first embodiment, the lid 5 removed from the lid 3 can be easily washed, and the lid 3 closes the upper opening portion of the top surface of the rice cooker body 2. However, it is not necessary to provide a sturdy frame made of heavy objects, and the rice cooker can be made simple and lightweight, and is easy to handle.

"Automatic pinching mechanism"
Next, the configuration of the "automatic sandwiching mechanism" provided on the lid 3 of the pressure-type rice cooker of the first embodiment will be described.

FIG. 11 is a perspective view of the state in which the pot 4 is joined to the lid 3 in the state where the cover on the upper surface is removed, as seen from diagonally above, as shown in FIGS. 7 and 8. FIG. 12 shows a state similar to that of FIG. 11, and is a perspective view of the connected state of the lid 3 and the pot 4 as viewed from diagonally below. 11 and 12 show a state in which the lid 5 of the lid 3 is capable of high-pressure rice cooking operation in which the upper opening of the pot 4 is closed. In the state where the pot 4 is connected to the lid 3 shown in FIGS. 11 and 12, the lid 3 is locked to the rice cooker main body 2 for accommodating the pot 4 by a locking means to be in a closed state. It is maintained.

In the pressure-type rice cooker of the first embodiment, the high-pressure rice cooking operation state in which the lid 5 of the lid 3 and the pot 4 are connected is achieved by the automatic sandwiching mechanism. In the exploded perspective view shown in FIG. 8 described above, the automatic sandwiching mechanism includes the plurality of sandwiching units 30 and the sandwiching unit fixing plate 31 fixed to the lid 3 by fixing these sandwiching units 30. , Is equipped. The plurality of sandwiching units 30 are arranged along the outer peripheral position of the lid 5 mounted on the lid body 3.

As shown in FIG. 8, in the pressure type rice cooker of the first embodiment, an example in which four sandwiching units 30 are arranged at substantially equal intervals is shown. The number of the sandwiching units 30 may be any one as long as the connection between the pot 4 and the lid 5 is assured, and the number is not limited, but it is more preferable to provide three or more. Further, the arrangement interval of the plurality of sandwiching units 30 is preferably equal intervals, but when an abnormal situation occurs, the back side of the rice cooker, that is, the side where the user does not exist is destroyed. The arrangement interval of the sandwiching units 30 provided in the above may be set wider than that on the front side, that is, the side where the user exists.

In the configuration of the first embodiment, the sandwiching unit fixing plate 31 has a quadrangular shape corresponding to the external shape of the pressure type rice cooker, and the sandwiching units 30 are arranged at the four corners thereof. The rice cooker of the present disclosure is not limited to such a configuration, and the shape of the sandwiching unit fixing plate 31 such that the sandwiching unit 30 is arranged so as to be able to connect between the pot 4 and the lid 5. It may be a configuration.

[Structure of sandwiching unit]
Next, in the pressure type rice cooker of the first embodiment, the configuration of the sandwiching unit 30 fixed to the sandwiching unit fixing plate 31 will be described.

13 to 16 are perspective views showing a sandwiching unit 30 in a state where the pot 4 and the lid 5 are not connected in the pressure type rice cooker of the first embodiment. FIG. 13 is a perspective view seen from diagonally above, and FIG. 14 is a perspective view seen from diagonally below. 15 and 16 are an exploded perspective view of the sandwiching unit 30, FIG. 15 is an exploded perspective view seen from diagonally above, and FIG. 16 is an exploded perspective view seen from diagonally below.

As shown in FIGS. 13 to 16, the sandwiching unit 30 has a hook box 32 fixed to the sandwiching unit fixing plate 31 which is a frame body, and the position detection sensor 40 is mounted on the hook box 32. NS. As will be described later, the position detection sensor 40 is a pinch detection unit that detects whether the pot 4 and the lid 5 are in a coupled state by the pinch unit 30 and transmits the detection information to the control unit. be. The detection information output from the position detection sensor (pinching detection unit) 40 is used as pot lid pinching information for controlling the rice cooking operation. Further, a hook fixing plate 35 is fixed to the hook box 32. A hook 33 is provided on the hook fixing plate 35 so as to be rotatable (swinging). The hook fixing plate 35 and the hook 33 are penetrated by a hook shaft 39, and swing around the hook shaft 39 as a rotation center.

FIG. 17 is a perspective view of the sandwiching unit 30 shown in FIG. 15 further disassembled. As shown in FIG. 17, the hook 33 has a shape in which the upper end portion (upper end protruding portion 33a) and the lower end portion (lower end protruding portion 33c) protrude inward (pot side), and these upper end protruding portions 33a. The top and bottom are connected by a base 33b that integrally connects the lower end protrusion 33c, that is, the side surface shape is a so-called "U" shape. A hook backing plate 34 is fixed to the upper end protruding portion 33a of the hook 33. As will be described later, a lid 5 and a pan 4 are arranged and sandwiched between the hook contact plate 34 provided on the upper end protruding portion 33a of the hook 33 and the lower end protruding portion 33c of the hook 33.

In the sandwiching unit 30 according to the first embodiment, the hook 33 having the upper end protruding portion 33a and the lower end protruding portion 33c, the hook contact plate 34 fixed to the upper end protruding portion 33a, and the hook 33 are urged in one direction. A hook spring 37, which will be described later, which is an urging portion, is provided as a sandwiching portion 50. Further, in the pinching portion 50, the hook contact plate 34 fixed to the upper end protruding portion 33a of the hook 33 serves as the upper pinching end, and the lower end protruding portion 33c of the hook 33 serves as the lower pinching end. However, the upper sandwiching end and the lower sandwiching end of the sandwiching portion 50 are integrally connected (sandwiched) in order to sandwich and connect (sandwich) the outer peripheral edge portion 4a of the pot 4 and the outer peripheral edge portion 5a of the lid 5. It indicates a portion configured to swing, and is not limited to the configuration of the first embodiment.

A pinch detection protrusion 36 and a spring support protrusion 38 are formed on the upper portion of the hook backing plate 34. The pinch detection protrusion 36 is a pinch detection rod formed so as to project upward in which the position detection sensor 40 is arranged, and performs the same movement as the rotation of the hook backing plate 34. The position detection sensor 40 detects the presence or absence of the pinch detection protrusion 36, which is the pinch detection rod, and confirms the pinch state between the pot 4 and the lid 5. The spring support protrusion 38 supports the hook spring 37, which is an urging portion. The hook 33 is usually arranged so that the opening portion (the opening portion having a "U" shape) between the hook backing plate 34 and the lower end protruding portion 33c is directed downward by the urging force of the hook spring 37. Therefore, the hook spring 37, which is the urging portion, presses the outer peripheral edge portion 5a of the lid 5 in the direction (substantially downward) of the outer peripheral edge portion 4a of the pot 4 in a state where the lid 5 closes the opening of the pot 5. .. Therefore, in the non-attached state in which the pot 4 and the lid 5 are not attached to the pressure-type rice cooker, the opening portion of the hook 33 in the lid 3 is in an obliquely downward state. Therefore, when the pot 4 is housed in the rice cooker body 2, the lid 5 is attached to the lid 3, and the rice cooker body 2 is closed by the lid 3 (closed state), the pot 4 and the lid 5 are respectively. The outer peripheral edges (4a, 5a) of the hook 33 are securely arranged between the openings of the hook 33. When the pressure inside the pot is atmospheric pressure, the hook contact plate 34 presses the outer peripheral edge portion 5a of the lid 5 downward by the urging force of the hook spring 37, and the lower end protruding portion 33c is from the outer peripheral edge portion 4a of the pot 4. The position is on the outside, and the lid 3 can be easily opened.

[Operation of sandwiching unit]
Next, the operation of the sandwiching unit 30 that sandwiches the outer peripheral edges (4a, 5a) of the pot 4 and the lid 5 in the closed state will be described.

FIG. 18 is a diagram illustrating the operation of the sandwiching unit 30, and shows the end faces of each element. FIG. 18A shows the rotation position of the hook 33 and the like when the pot 4 and the lid 5 are not attached to the pressure type rice cooker. A contact portion 34a, which is a hemispherical protrusion, is formed on the lower surface of the hook contact plate 34 in the sandwiching portion 50. The contact portion 34a serves as a contact portion with the outer peripheral edge portion of the lid 5, and is in point contact. As shown in FIG. 18A, the contact portion 34a of the hook backing plate 34 is on the pan side of the vertical line A including the rotation center of the hook 33, which is the center of the hook shaft 39 (FIG. 18A). Is located on the right side). That is, the rotation center (vertical line A) of the sandwiching portion 50 is outside the contact position between the outer peripheral edge portion 5a of the lid 5 and the sandwiching portion 50. Further, the rotation center of the sandwiching portion 50 (center of the hook shaft 39) is arranged so as to be above the outer peripheral edge portion 4a of the pan 4. The shape of the contact portion 34a on the lower surface of the hook backing plate 34 may not be specified in a hemispherical shape, but may be configured to be in point contact or line contact with the outer peripheral edge portion of the lid 5.

Further, the facing distance L1 between the contact portion 34a of the hook backing plate 34 and the lower end protruding portion 33c of the hook 33 arranged to face the hook backing plate 34 (see (a) in FIG. 18) is determined. The distance is set so that the outer peripheral edges (4a, 5a) of the pot 4 and the lid 5 can be sandwiched. However, the facing distance L1 is set to +1.0 to 5.0 mm or less for the thickness of the outer peripheral edges (4a, 5a) of the pan 4 and the lid 5 to be sandwiched.

Further, the protruding distance of the lower end protruding portion 33c of the hook 33 toward the pan side (inside) is an offset distance L2 (FIG. 18) as compared with the protruding distance of the contact portion 34a of the hook backing plate 34 toward the pan side (inside). (Refer to (a)) is set shorter. As shown in FIG. 18A, in the configuration of the first embodiment, the protruding end position of the lower end protruding portion 33c of the hook 33 in the non-mounted state of the pan 4 and the lid 5 is the rotation center of the hook 33. It is arranged at a position outside the including vertical line A (a position away from the pot). Therefore, when the pot 4 is housed in the rice cooker body 2, the lid 5 is mounted on the lid 3, and the lid 3 is closed by the rice cooker body 2 in the non-mounted state, the pot 4 and the lid 5 are respectively. The outer peripheral edge portion (4a, 5a) of the lid 5 passes through the hook 33 without contacting the lower end protruding portion 33c, and the outer peripheral edge portion 5a of the lid 5 comes into contact with the contact portion 34a of the hook contact plate 34.

FIG. 18B shows a state in which the outer peripheral edge portion 5a of the lid 5 is in contact with the contact portion 34a of the hook backing plate 34 (preparation for pinching), and the lid body 3 is locked to the rice cooker main body 2. It shows a closed state that is closed through the part. As shown in FIG. 18B, the outer peripheral edge portion 5a of the lid 5 is in contact with the abutting portion 34a of the hook abutting plate 34, and the hook abutting plate 34 is slightly lifted, and the hook 33 is a hook shaft. It rotates counterclockwise around 39. As a result, the protruding end of the lower end protruding portion 33c of the hook 33 is arranged with a gap immediately below the outer peripheral edge portion of the pot 4. The rice cooking operation is started in the sandwiching preparation state shown in FIG. 18 (b).

FIG. 18C shows a state when the rice cooking operation is started and the pressure in the pot is increased to a high pressure. The state shown in FIG. 18C shows a state in which the outer peripheral edges (4a, 5a) of the pot 4 and the lid 5 are sandwiched by the sandwiching unit 30 (pinching state). When the rice cooking operation is started and the inside of the pot becomes a boiling state, the pressure inside the pot rises, the lid 5 is lifted, and the lid 5 is slightly lifted (rised) away from the pot 4. As a result, as shown in FIG. 18 (c), the outer peripheral edge portion 5a of the lid 5 lifts the contact portion 34a of the hook backing plate 34 and rotates the hook 33 counterclockwise. Therefore, the lower end protruding portion 33c of the hook 33 enters the lower surface side of the outer peripheral edge portion 4a of the pan 4 and finally abuts on the outer peripheral edge portion 4a. At this time, the lower end protruding portion 33c of the hook 33 first enters the lower surface side of the outer peripheral edge portion 4a of the pot 4, and then abuts on the outer peripheral edge portion 4a. ), The offset distance L2 (see (a) in FIG. 18), the rotation (swing) angle of the hook 33, and the like are set.

As described above, in the high pressure state in which the pressure inside the pot is increased, the sandwiching unit 30 ensures that the outer peripheral edges (4a, 5a) of the pot 4 and the lid 5 are in the sandwiched state. As shown in FIG. 18C, since the inside of the pan is in a high temperature and high pressure state in this sandwiched state, the outer peripheral edge packing which is an elastic member provided on the outer peripheral edge 5a of the lid 5 The state in which 5b expands and is in contact with the inner peripheral surface of the pot 4 is maintained. In the sandwiching unit 30, the facing distance L1 is set to a desired distance, and the lifting distance of the lid 5 is defined to be within a predetermined distance. Therefore, the lid 5 is lifted from the pan 4 in the sandwiching state. However, the sealing effect of the outer peripheral edge packing 5b makes it possible to maintain the airtight state inside the pan.

The relationship between the pinching operation in the pinching unit 30 and the opening / closing operation in the pressure adjusting / opening / closing unit 20 will be described.

When the pressure adjusting opening / closing unit 20 performs the closing operation in the pinching preparation state shown in FIG. 18B, the valve body pressure contact portion 21a, which is the tip of the valve body 21, is lowered to lower the valve seat of the lid 5. It comes into contact with 12 and becomes a closed state. The closed state at this time is the state shown in FIG. 10B described above. As a result, the pressure in the pan increases, and the pinching unit 30 shifts from the pinching ready state shown in FIG. 18 (b) to the pinching state shown in FIG. 18 (c). At this time, the valve body pressure contact portion 21a, which is the tip of the valve body 21 in the pressure adjusting opening / closing unit 20 and is in contact with the valve seat 12, is changed from the state shown in FIG. 10 (b) to FIG. 10 (c). Move to the indicated state. That is, the valve body pressure contact portion 21a, which is the tip of the valve body 21, is further crushed and maintained in the closed state by lifting the lid 5 from the state of being in contact with the valve seat 12 of the lid 5. In this way, since the valve body pressure contact portion 21a is made of an elastic body having flexibility, even if the lid 5 is lifted in the closed state and the pot 4 and the lid 5 are in the sandwiched state, the valve body The pressure contact state between the pressure contact portion 21a and the valve seat 12 is maintained, and the closed state is reliably maintained.

The sandwiching unit 30 in the first embodiment automatically sandwiches the pot 4 and the lid 5 when pressure is applied by utilizing the high pressure state generated in the pot, and ensures an airtight state in the pot. It is a configuration that can maintain. Therefore, even in a configuration in which a pressure-type rice cooker is used to cook high-pressure rice, it is not necessary to provide a sturdy and heavy frame on the lid 3, and an automatic sandwiching mechanism is provided on the lid 3 to provide the lid. It is possible to reduce the weight and size of the lid 3 with a simple configuration, and the lid 3 can be easily handled. Further, the sandwiching unit 30 configured as described above is configured to reliably maintain the sandwiched state between the pot 4 and the lid 5 when a pressure of 5 kPa or more remains in the pot. It is not necessary to provide a complicated special mechanism for ensuring safety and reliability, and it is a configuration that greatly contributes to simplification, miniaturization, and weight reduction of the device. In the configuration of the pressure-type rice cooker of the first embodiment, since the pressure-regulating on-off unit 20 of the pressure-regulating on-off valve mechanism and the pinching unit 30 of the automatic pinching mechanism are provided, desired rice cooking in the pressure-type rice cooker is provided. The configuration is such that the operation can be executed reliably.

[Cooking operation of pressure type rice cooker]
Next, the rice cooking operation of the pressure type rice cooker according to the first embodiment will be described. FIG. 19 is a waveform diagram showing an example when a normal rice cooking operation is performed in the pressure type rice cooker of the first embodiment, and is a transition of the temperature and pressure in the pot and the timing of opening and closing the pressure adjusting opening / closing unit 20. The power consumption during the rice cooking operation is schematically shown. The temperature inside the pot 4 is the temperature inside the pot 4 provided inside the rice cooker main body 2 to detect the temperature of the bottom of the pot 4 and the temperature inside the pot 5 provided inside the lid 3 through the lid 5. It is configured to be detected by a lid temperature sensor that detects. Further, the pressure inside the pot 4 is detected by a pressure detection unit which is a pressure sensor provided on the lid 3.

A pot 4 containing an object to be cooked such as rice or water is housed in the rice cooker main body 2 by the user, and the lid 3 to which the lid 5 is attached seals the upper opening of the pot 4 of the rice cooker main body 2. Closed (closed state). After that, the user selects a rice cooking course or the like in the operation unit 7, sets the necessary rice cooking conditions, and starts the rice cooking operation. When the rice cooking operation is started, the pre-cooking process (preheating process) is first executed.

The pre-cooking step is a step of immersing the rice in water having a temperature lower than the gelatinization temperature and allowing the rice to absorb water in advance so that the central part of the rice is sufficiently gelatinized in the subsequent steps. In the pre-cooking process, the control unit raises the temperature of the water in the pot to near the temperature at which rice gelatinization begins (about 60 ° C) and maintains that temperature based on the temperature detected by the pot bottom temperature sensor. In addition, control the heating source. In the pre-cooking step, the pressure adjusting opening / closing unit 20 is held in an open state.

When a predetermined time corresponding to the selected rice cooking course elapses from the start of the pre-cooking process, the process shifts to the cooking process. The cooking step is a step of heating the pot 4 at once with high heat to bring the water in the pot to a boiling state. Even in this cooking process, the pressure adjusting opening / closing unit 20 is kept in an open state.

In the cooking step, when the detection temperature of the lid temperature sensor provided on the lid 3 reaches the boiling temperature (about 105 ° C.), the process shifts to the boiling maintenance step. The boiling maintenance step is a step of maintaining the water in the pot in a boiling state to gelatinize the starch of rice into a desired state. In this boiling maintenance step, the pressure adjusting opening / closing unit 20 is controlled to open / close to cause a plurality of bumping states in the water in the pot to stir the rice grains. By executing the boiling maintenance step in this way, the rice grains in the pot are agitated evenly, the desired heating can be performed for each rice grain, and delicious rice can be cooked evenly. In the boiling maintenance step, since water is continuously boiled, a large amount of steam is generated, and "oneba" is stored in the steam tank section 10 together with the steam, and the "oneba" is stored in the steam tank section 10. It flows into the "neba" holding space of the "neba" holding area 11. In this boiling maintenance step, when the pressure adjusting opening / closing unit 20 is controlled to open / close and the valve hole 12a of the valve seat 12 in the “oneba” holding region 11 is opened, the “oneba” passes through the valve hole 12a and the pot 4 It runs down to.

In the boiling maintenance step, when the water in the pot is almost exhausted, the pot bottom temperature of the pot 4 rises to a temperature equal to or higher than the boiling point of water (for example, 130 ° C.). When the pot bottom temperature sensor detects this pot bottom temperature, the process shifts to the steaming process. The steaming step is a step of using residual heat to evaporate excess water to raise the gelatinization of rice to nearly 100%. In the steaming step, the pressure adjusting opening / closing unit 20 is maintained in an open state, and the pressure in the pot is reduced to atmospheric pressure. When a preset time elapses from the start of the steaming process, the steaming process ends and the rice cooking operation is completed.

The opening / closing operation for moving and controlling the valve body 21 in the pressure adjusting opening / closing unit 20 includes information such as a pressure detecting unit for detecting the pressure inside the pot 4 and a temperature detecting unit for detecting the temperature inside the pot 4, and time. It is controlled based on information. Since the rice cooker of the first embodiment has a configuration in which the pressure in the pot can be adjusted by the pressure regulating on-off valve mechanism, the pressure regulating valve required in the conventional configuration can be eliminated. Further, in the rice cooker of the first embodiment, since the pressure inside the pot can be arbitrarily controlled by the pressure adjusting on-off valve mechanism, the taste of the cooked rice produced by the rice cooking operation can be significantly improved.

As described above, in the rice cooking operation in the pressure-type rice cooker of the first embodiment, the pot composed of the pot 4 and the lid 5 is automatically activated in the high pressure state of the automatic sandwiching mechanism, and the pot 4 and the lid 5 are activated. It is a configuration in which the desired cooking is performed by surely sandwiching the 5 and the rice in an airtight state. Further, in the rice cooking operation, since the lid 3 is provided with a pressure regulating on-off valve mechanism, the lid 5 attached to the lid 3 can be reduced in weight with a simple configuration, and is easy for the user to handle. In addition to the above-mentioned structure, the “neba” can be reliably recirculated from the lid 5 to the pot 4.

As described above, as described using the pressure type rice cooker as an example in the first embodiment, in the rice cooker of the present disclosure, the sandwiching unit in the automatic sandwiching mechanism displays the high pressure state generated in the pot. Since it is configured to automatically sandwich the pot and lid when the pressure inside the pot rises, it is a configuration that can reliably maintain the airtight state inside the pot and is safe. And a reliable cooker can be built. Therefore, in a rice cooker that cooks at high pressure, it is not necessary to provide a sturdy frame for the lid, and the lid can be made lighter and smaller with a simple configuration, and the cooker itself. The configuration can be easily handled.

Further, since the rice cooker of the present disclosure is provided with a pressure regulating valve mechanism, a plurality of complicated valve mechanisms such as a pressure regulating valve, an on-off valve, and a check valve used in the conventional pressure type rice cooker are provided. Can also be shared. In particular, it is possible to have a simple configuration other than the safety valve, which is indispensable for the lid, and the main part of the pressure regulating on-off valve mechanism is provided in the lid to which the lid is mounted. As a result, in the rice cooker of the cooker of the present disclosure, it is possible to reduce the weight of the lid that closes the upper opening of the rice cooker body with a simple structure, and it is possible to construct a rice cooker that is easy to handle. can.

Although the present invention has been described in embodiments with some degree of detail, this configuration is exemplary and the disclosure of embodiments should vary in detail. In the present invention, substitutions, combinations, and changes in order of elements in the embodiments can be realized without departing from the claimed scope and ideas of the present invention.

As described above, an embodiment has been described as an example of the technique in the present disclosure. To that end, detailed description and accompanying drawings have been disclosed. Therefore, some of the components described in the detailed description and the attached drawings may include components that are not essential for solving the problem. Therefore, just because those non-essential components are described in the detailed description and accompanying drawings should not be immediately determined to be mandatory for those non-essential components.

Since the above-described embodiment is for exemplifying the technique in the present disclosure, it is possible to make various changes, substitutions, additions, omissions, etc. within the scope of claims or the equivalent thereof.

In the rice cooker, which is the cooker according to the present disclosure, the lid that closes the upper opening of the rice cooker body can be reduced in weight with a simple structure, so that it is possible to provide a rice cooker that is easy to handle. It can be used and is useful as a rice cooker for home and business use.

1 Pressure type rice cooker 2 Rice cooker body 3 Lid body 4 Pot 4a Outer peripheral edge of pot 5 Lid 5a Outer peripheral edge of lid 5b Outer peripheral edge packing 6 Hook button 7 Operation part 8 Display part 9 Steam outlet 10 Steam tank part 11 "Rice cooker" holding area 11a Groove 11b Inner peripheral side wall 11c Outer peripheral side wall 12 Valve seat 12a Valve hole 13 Safety valve 14 Filter plate 20 Pressure regulation opening / closing unit 21 Valve body 21a Valve body pressure contact part 22 On / off valve holding 22a Guide groove 22b Engagement protrusion 23 On-off valve drive shaft 23a Screwing part 24 On-off valve drive motor 25 Lid facing plate 26 On-off valve mounting base 26a Guide rib 30 Pinching unit 31 Pinching unit fixing plate 32 Hook box 33 Hook 33a Top protruding part 33b Base 33c Lower end protruding part 34 Hook contact plate 34a Contact part 35 Hook fixing plate 36 Pinching detection protrusion (pinching detection rod)
37 Hook spring 38 Spring support protrusion (hook spring support)
39 Hook shaft 40 Position detection sensor (sandwich detection unit)
50 sandwiching part

Claims (6)

A pot with an open top to store food to be cooked
A rice cooker body having a pot accommodating portion capable of accommodating the pot,
A lid for closing the opening of the top surface of the pot and a lid to which the lid is attached and which can be locked to the rice cooker body so as to close the pot housed in the rice cooker body are provided. It ’s a rice cooker
The lid body is provided with a pressure regulating on-off valve mechanism.
The pressure regulating on-off valve mechanism is
A valve seat provided on the lid and having a valve hole which is an opening communicating with the inside of the pot.
A valve body provided on the lid body facing the lid and configured to be movable in the detaching direction with respect to the valve seat to open and close the valve hole to control the pressure inside the pot.
Including rice cooker. The lid has a "neba" holding area for storing the "neba" that recirculates inside the pot.
The rice cooker according to claim 1, wherein the valve hole is formed at the lowest point position in the vertical direction in the "oneba" holding region. The valve body has a valve body pressure-contacting portion that protrudes in a direction facing the valve seat, and the valve body pressure-contacting portion comes into contact with the valve seat to enter a closed state of the pressure adjusting on-off valve mechanism. The rice cooker according to claim 1 or 2, wherein the rice cooker is made of an elastic body so that the closed state can be maintained even if the lid fluctuates with respect to the lid in the closed state. The rice cooker according to any one of claims 1 to 3, wherein a filter plate having a plurality of holes smaller than rice grains is provided on the valve seat so that the rice grains from the pot do not pass through the valve holes. vessel. Claims 1 to 4 are configured such that the separation direction in which the valve body moves with respect to the valve seat is a direction in which the lid is lifted with respect to the pot when the pressure inside the pot rises. The rice cooker described in any one of the items. A pressure detector for detecting the pressure inside the pot is provided.
The rice cooker according to any one of claims 1 to 5, which is configured to control the movement of the valve body based on a signal from the pressure detecting unit to control the pressure inside the pot.

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