JP2018033646A - rice cooker - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rice cooker which does not cook rice when a steam discharge container is not fitted to a lid part.SOLUTION: A rice cooker includes: a body part in which an inner pot is freely removably housed and which has heating means heating the housed inner pot; a lid part which is freely rotatably provided for the body part and opens/closes an opening of the inner pot housed in the body part; a steam discharge container which is freely removably fitted to an upper part of the lid part, takes in steam containing glutinous bubbles generated in the inner pot during rice cooking, separates the glutinous bubbles and steam, and discharges the steam only; an operation part having a rice cooking key to start cooking rice; vessel detection means detecting whether or not the steam discharge container is fitted; and control means which stops starting rice cooking in the case that it is not detected by the vessel detection means that the steam discharge container is fitted when an instruction of the rice cooking start from the rice cooking key is detected.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a rice cooker provided with a steam discharge container that separates rice balls and steam and discharges only steam to the outside.

  A conventional rice cooker is detachably attached to the main body that houses the inner pot, the lid that opens and closes the inner pot stored in the main body, the heating means that heats the inner pot, and the upper part of the lid There is a thing provided with the made steam discharge container (for example, refer to patent documents 1).

Japanese Patent Laid-Open No. 11-244139

  In rice cookers equipped with a steam discharge container, rice cooking is started even when the steam discharge container is not attached to the lid, and even if the steam discharge container is accidentally removed from the lid during cooking doing. For this reason, there is a risk that burns and burns may occur during cooking rice. In addition, when rice balls and steam blow out, it is necessary to clean the rice cooker itself and the surrounding area, and when the steam discharge container is removed from the lid, the cooking of the rice is worse. .

  This invention is made | formed in order to solve the above subjects, and it aims at providing the rice cooker which was made not to perform rice cooking, when the vapor | steam discharge container is not mounted | worn with the cover part.

  In the rice cooker according to the present invention, the inner pot is removably stored, the main body having a heating means for heating the stored inner pot, and the main body is rotatably provided and stored in the main body. A lid part that opens and closes the opening of the inner pot and a top part of the lid part are detachably mounted. The steam containing the rice bowl generated in the inner pot during rice cooking is separated into steam and the steam only. A steam discharge container that discharges to the outside, an operation unit having a rice cooking key for starting rice cooking, a container detection means for detecting whether or not a steam discharge container is attached, and a rice cooking start instruction from the rice cooking key When the container detection means does not detect the installation of the steam discharge container, the control means for stopping the start of rice cooking is provided.

  According to the present invention, when the instruction for starting rice cooking from the rice cooking key is detected, if the installation of the steam discharge container is not detected by the container detection means, the start of rice cooking is stopped. With this configuration, rice cooking without a steam discharge container can be prevented. For this reason, the blowing of steam and rice balls from the lid of the rice cooker can be prevented, and the risk of burns due to the blowing of steam and rice balls can be prevented.

It is a perspective view which shows the external appearance of the rice cooker which concerns on Embodiment 1 of this invention. It is a longitudinal cross-sectional view of the rice cooker shown in FIG. It is a longitudinal cross-sectional view which expands and shows a part of vapor | steam discharge container and a cover part of FIG. It is a longitudinal cross-sectional view which shows the state which removed the vapor | steam discharge container from the cover part in FIG. It is a flowchart which shows the operation | movement based on the presence or absence of mounting | wearing of the steam discharge container in the rice cooker of FIG. It is a longitudinal cross-sectional view which expands and shows a part of vapor | steam discharge container and the cover part of the rice cooker which concerns on Embodiment 2 of this invention. It is a longitudinal cross-sectional view which shows the state which removed the vapor | steam discharge container from the cover part in FIG. It is a longitudinal cross-sectional view which expands and shows a part of vapor | steam discharge container and the cover part of the rice cooker which concerns on Embodiment 3 of this invention. It is a longitudinal cross-sectional view which shows the state which removed the vapor | steam discharge container from the cover part in FIG. It is a longitudinal cross-sectional view which shows the modification of the container detection means of FIG.

Embodiment 1 FIG.
1 is a perspective view showing the appearance of a rice cooker according to Embodiment 1 of the present invention, FIG. 2 is a longitudinal sectional view of the rice cooker shown in FIG. 1, and FIG. 3 is a part of the steam discharge container and lid of FIG. 4 is an enlarged longitudinal sectional view, and FIG. 4 is a longitudinal sectional view showing a state where the steam discharge container is removed from the lid portion in FIG.
As shown in FIGS. 1 and 2, the rice cooker 100 according to Embodiment 1 includes an induction heating coil 12 that is a heating unit that heats the stored inner pot 11, in which the inner pot 11 is stored in a freely removable manner. A main body unit 10, a lid unit 30 that is provided on the main body unit 10 so as to be rotatable and opens and closes an opening of the inner hook 11 accommodated in the main body unit 10, and an operation display unit provided on the front part of the main body unit 10. 50 and the lid 30 are detachably attached to the upper part of the lid 30. The steam containing the rice cake generated in the inner pot 11 during rice cooking is taken to separate the rice cake and the steam, and only the steam is removed from the rice cooker 100. And a steam discharge container 70 for discharging the gas.

  The main body 10 is provided with an outer frame 13 having a side surface formed in a cylindrical shape, an upper frame 14 provided at an upper portion of the outer frame 13, and a lower plate of the outer frame 13 to form a bottom plate 16 of the main body 10. The outer frame is composed of the lower frame 15 that performs the above operation. The main body 10 includes a cylindrical inner heat shield plate 17, a body heater 18 attached in close contact with the outer peripheral surface of the inner heat shield plate 17, and a substantially deep depth installed under the inner heat shield plate 17. A dish-shaped coil base 19, a ferrite 20 installed below the induction heating coil 12, a temperature sensor 21 provided at the center of the coil base 19, and a power supply substrate 22 are provided. The main body portion 10 is formed with a bottomed cylindrical inner pot accommodating portion 23 by the inner heat shield plate 17 and the coil base 19.

  The induction heating coil 12 generates an alternating magnetic field when energized, and heats the inner hook 11 by electromagnetic induction. The body heater 18 is energized at the time of cooking and keeping warm, and generates heat. The ferrite 20 is formed of a magnetic shielding material that reduces noise emitted from the induction heating coil 12. The temperature sensor 21 is composed of, for example, a thermistor, and abuts against the bottom of the inner hook 11 to detect the temperature of the inner hook 11.

  The power supply board 22 has a heater energizing circuit for energizing the body heater 18, a lid heater energizing circuit for energizing a lid heater 37, which will be described later, a rectifying circuit for converting AC power to DC power, and DC power from the rectifying circuit to high frequency power. An inverter circuit that converts and supplies the induction heating coil 12 and a heating control circuit that controls the inverter circuit are mounted. The switching element of the inverter circuit is provided with a heat radiating fin.

  The lid portion 30 includes an upper lid 31, a lower lid 32 that is attached to the lower side of the upper lid 31 and includes a hinge portion 33 on the rear side, and an inner lid 34 that is detachably attached to the lower lid 32. 10 is locked by the locking button 40 when the opening of the upper frame 14, that is, the opening of the inner hook housing portion 23 formed in the main body portion 10 is closed. A concave portion 35 for accommodating the steam discharge container 70 is provided at the center of the upper lid 31. The lower lid 32 is provided with a partition plate 36 arranged on the inner hook 11 side and a spiral lid heater 37 installed on the upper surface of the partition plate 36. The lid heater 37 is energized at the time of rice cooking and heat retention, similarly to the body heater 18, and generates heat.

  The partition plate 36 is provided with a mounting hole 38 into which the steam discharge container 70 is detachably inserted. A packing 34a formed in a ring shape with, for example, silicon rubber is attached to the peripheral portion of the inner lid 34 on the inner hook 11 side. Further, the inner lid 34 is provided with a steam vent 34b formed to be recessed toward the inner hook 11 at a portion facing the mounting hole 38 provided in the partition plate 36. The steam vent 34b is provided with a steam hole 34c for venting the steam in the inner hook 11.

  The operation display unit 50 includes an operation unit 51 having a rice cooking key, a heat retention key, a function setting key, and the like, and a display unit 52 (see FIG. 2) that displays a rice cooking operation, a rice cooking function, and the like according to settings of the operation unit 51. It has. The operation display unit 50 is provided with a display window 52a at a position facing the display unit 52 (see FIG. 1). An operation board 53 is installed at a position facing the operation display unit 50 in the front part inside the main body unit 10. In response to an operation signal from the operation unit 51, the operation substrate 53 outputs a command signal for operating a heating control circuit, a heater energization circuit, and the like of the power supply substrate 22, and a rice cooking operation based on the operation signal is displayed on the display unit 52. The rice cooking control part 53a, a buzzer, etc. which are displayed on are mounted.

  Although it mentions later in the rice cooking control part 53a, if the instruction | indication of the rice cooking start from a rice cooking key is detected, it will determine whether mounting | wearing of the steam discharge container 70 was detected by the container detection means, and mounting | wearing of the steam discharge container 70 will be detected. When not done, it has a function of a control means for stopping the start of rice cooking. Further, the rice cooking control unit 53a is configured to prompt the user to install the steam discharge container 70 through the display unit 52 having a function of a notification unit when the container detection unit does not detect the installation of the steam discharge container 70. .

  The steam discharge container 70 is composed of an upper case 71 and a lower case 72 that are separably fitted together. The lower case 72 is provided with a guide cylinder 72 a that takes in the steam including the screw generated in the inner pot 11 into the steam discharge container 70. Further, the lower case 72 is provided with a tow collecting recess 72b for collecting the tow separated from the steam. A spherical valve body 72c larger than the diameter of the guide cylinder 72a is placed on the upper end of the guide cylinder 72a. The valve body 72c moves up and down according to the steam pressure during rice cooking, and guides the steam in the inner pot 11 into the steam discharge container 70. An open / close valve 72d that can move up and down is attached to the bottom of the recovery recess 72b. The upper case 71 is provided with a steam port 71a for discharging steam from the rice cooker 100 to the outside.

  In the first embodiment, as shown in FIGS. 2 and 3, for example, a micro switch 80 serving as a container detection unit is installed on the partition plate 26 of the lower lid 32. The micro switch 80 includes a push button 81 for turning on / off an internal contact. The push button 81 is inserted into a ring hole of the packing 39 provided in the recess 35 of the upper lid 31 so as to be movable up and down.

  As shown in FIG. 3, when the vapor discharge container 70 is inserted into the mounting hole 38 and is mounted in the recess 35 of the upper lid 31, the micro switch 80 is pressed down by the push button 81 to turn on the contact. . At this time, an ON signal is output from the micro switch 80 to the rice cooking control unit 53 a of the operation board 53. As shown in FIG. 4, when the steam discharge container 70 is removed from the attachment hole 38, the push button 81 of the micro switch 80 projects into the recess 35 of the upper lid 31 through the ring hole of the packing 39. . At this time, the contact of the micro switch 80 is turned off, and accordingly, the output of the ON signal from the micro switch 80 is interrupted.

Next, the operation | movement based on the presence or absence of mounting | wearing of the steam discharge container 70 in the rice cooker comprised as mentioned above is demonstrated using FIG.
FIG. 5 is a flowchart showing an operation based on whether or not the steam discharge container is attached in the rice cooker of FIG.
When the rice cooking key of the operation unit 51 is turned on (step S1), the rice cooking control unit 53a determines whether or not the steam discharge container 70 is mounted in the recess 35 of the upper lid 31 (step S2). When the ON signal from the micro switch 80 is input, the rice cooking control unit 53a determines that the steam discharge container 70 is mounted in the recess 35 of the upper lid 31, and performs the rice cooking operation based on the operation of the operation unit 51. Start (step S3).

  Further, in step S2, when the ON signal from the micro switch 80 is not input, the rice cooking control unit 53a determines that the steam discharge container 70 is not mounted in the concave portion 35 of the upper lid 31, and the buzzer serving as a notification unit (Not shown) is activated to generate a buzzer sound, and a message “There is no steam discharge container 70. Install the steam discharge container 70” is displayed on the display 52 (step S4, Step S5).

  As described above, according to the first embodiment, when the steam discharge container 70 is not mounted in the recess 35 of the upper lid 31, a buzzer sound is notified and the display unit 52 is prompted to mount the steam discharge container 70. Is displayed and rice is not cooked. With this configuration, it is possible to prevent rice cooking without attaching the steam discharge container 70, and therefore, it is possible to prevent steam and rice balls from the lid 30 of the rice cooker 100 from being blown out, and to prevent burns caused by blowing steam and rice balls. it can.

Embodiment 2. FIG.
In the first embodiment, the push button 81 itself of the steam discharge container 70 is exposed from the ring hole of the packing 39, but in the second embodiment, the push button 81 is protected.
FIG. 6 is an enlarged longitudinal sectional view showing a part of the steam discharge container and lid part of the rice cooker according to Embodiment 2 of the present invention, and FIG. 7 shows a state where the steam discharge container is removed from the cover part in FIG. It is a longitudinal cross-sectional view shown. In addition, the same code | symbol is attached | subjected to the part similar to Embodiment 1. FIG.

  In the second embodiment of the present invention, as shown in FIGS. 6 and 7, a push button 81 is inserted into a bag-like seal portion 39 a formed integrally with a packing 39 provided in the recess 35 of the upper lid 31. Has been. The packing 39 and the seal portion 39a are made of, for example, silicon rubber.

  As shown in FIG. 6, when the steam discharge container 70 is mounted in the recess 35 of the upper lid 31, the seal portion 39 a is pressed downward together with the push button 81 and is crushed. At this time, the contact is turned on by the downward movement of the push button 81. At this time, an ON signal is output from the micro switch 80 to the rice cooking control unit 53a.

  As shown in FIG. 7, when the steam discharge container 70 is removed from the attachment hole 38, the seal portion 39 a has an original bag shape due to elasticity, and the push button 81 of the micro switch 80 is connected to the ring hole of the packing 39. And protrudes into the recess 35 of the upper lid 31 in the seal portion 39a. At this time, the contact of the micro switch 80 is turned off, and accordingly, the output of the ON signal from the micro switch 80 is interrupted.

  As described above, in the second embodiment, since the push button 81 is protected by the bag-shaped seal portion 39a, in addition to the same effects as those of the first embodiment, dust or the like is present on the push button 81. Therefore, the vertical movement of the push button 81 due to adhesion of dust or the like is not hindered.

Embodiment 3 FIG.
In the first embodiment, the attachment of the vapor discharge container 70 is detected by the micro switch 80. However, in the third embodiment, the attachment of the vapor discharge container 70 is detected by the reed switch 83 instead of the micro switch 80. It is what you do.
FIG. 8 is an enlarged longitudinal sectional view showing a part of the steam discharge container and lid part of the rice cooker according to Embodiment 3 of the present invention, and FIG. 9 shows a state where the steam discharge container is removed from the cover part in FIG. It is a longitudinal cross-sectional view shown. In addition, the same code | symbol is attached | subjected to the part similar to Embodiment 1. FIG.

  In the third embodiment, as shown in FIGS. 8 and 9, a reed switch 83 that is a container detection unit is installed on the partition plate 26 of the lower lid 32. Further, a magnet 84 is installed at a position facing the reed switch 83 of the lower case 72 of the steam discharge container 70.

  As shown in FIG. 8, the reed switch 83 is turned on by the magnetic force of the magnet 84 when the vapor discharge container 70 is inserted into the mounting hole 38 and mounted in the recess 35 of the upper lid 31. At this time, an ON signal is output from the reed switch 83 to the rice cooking control unit 53 a of the operation board 53. As shown in FIG. 9, when the steam discharge container 70 is removed from the mounting hole 38, the reed switch 83 is turned off because it does not receive the magnetic force from the magnet 84, and an on signal is output from the reed switch 83. Is cut off.

  In this case, as in the first embodiment, the rice cooking control unit 53a determines that the steam discharge container 70 is not mounted in the concave portion 35 of the upper lid 31, and activates a buzzer (not shown) as a notification unit. Then, a buzzer sound is generated and a message “There is no steam discharge container 70. Please attach the steam discharge container 70” is displayed on the display unit 52.

  As described above, in the third embodiment, when the steam discharge container 70 is not mounted in the recess 35 of the upper lid 31, a buzzer sound is notified and the display section 52 is prompted to mount the steam discharge container 70. A message is displayed and rice cooking is not performed. With this configuration, it is possible to prevent rice cooking without attaching the steam discharge container 70, and therefore, it is possible to prevent steam and rice balls from the lid 30 of the rice cooker 100 from being blown out, and to prevent burns caused by blowing steam and rice balls. it can.

In the third embodiment, the reed switch 83 is installed on the partition plate 26 of the lower lid 32, and the magnet 84 is installed in the lower case 72 of the steam discharge container 70. Instead, this is shown in FIG. You may do it.
FIG. 10 is a longitudinal sectional view showing a modification of the container detection means of FIG.
In the modification shown in FIG. 10, the reed switch 83 is installed inside the upper lid 1 at a position facing the front surface 71b of the upper case 71 of the steam discharge container 70, and the magnet 89 is connected to the upper case described above. 71 is installed on the front surface portion 71 b of 71.

  In this case as well, as in the third embodiment, it is possible to prompt the user to attach the steam discharge container 70 that has been forgotten to be mounted, and for this reason, rice cooking due to forgetting to mount the steam discharge container 70 has not been performed. Can be prevented.

  In addition, when the steam discharge container 70 is not mounted in the recess 35 of the upper lid 31, rice cooking is not performed, so that rice cooking without the steam discharge container 70 can be prevented, and thus the rice cooker 100. It is possible to prevent the steam and rice bowl from being ejected from the lid portion 30 and to prevent burns caused by the ejection of the steam and rice bowl.

In the first to third embodiments, when the steam discharge container 70 is not mounted in the concave portion 35 of the upper lid 31, the rice cooking start is not executed based on the rice cooking key, but this is limited to this. is not.
For example, when cooking is started by detecting the attachment of the steam discharge container 70, and it is detected by the micro switch 80 or the reed switch 83 that the steam discharge container 70 is detached during cooking, the heating power of the heating means is prevented so that it does not spill. Implement thermal power control that lowers the amount by a certain amount. This heating power control is instruct | indicated from the rice cooking control part 53a to a heating control part. In this case, rice can be cooked without causing spillage.

  In the first to third embodiments, when the steam discharge container 70 is not mounted in the recess 35 of the upper lid 31, a buzzer sound is notified and the steam discharge container 70 is not mounted on the display unit 52. Is displayed, but is not limited to this. For example, instead of a buzzer sound emitted from a buzzer that is a notification means, a notification that the user is prompted to attach the vapor discharge container 70 may be notified by voice.

  Furthermore, the opening / closing of the lid 30 may be detected using the micro switch 80 or the reed switch 83. For example, when the vapor | steam discharge container 70 is mounted | worn in the recessed part 35 of the upper cover 31, when the cover part 30 is open, it alert | reports so that the cover part 30 may be closed.

  DESCRIPTION OF SYMBOLS 10 Main body part, 11 Inner hook, 12 Induction heating coil, 13 Outer frame, 14 Upper frame, 15 Lower frame, 16 Bottom plate, 17 Inner heat shield plate, 18 Body heater, 19 Coil stand, 20 Ferrite, 21 Temperature sensor, 22 Power supply board, 23 Inner hook housing part, 30 Lid part, 31 Upper lid, 32 Lower lid, 33 Hinge part, 34 Inner lid, 34a Packing, 34b Steam exhaust part, 34c Steam vent hole, 35 Recessed part, 36 Partition plate, 37 Lid heater , 38 Mounting hole, 39 Packing, 39a Sealing part, 40 Locking button, 50 Operation display part, 51 Operation part, 52 Display part, 52a Display window, 53 Operation board, 70 Steam discharge container, 71 Upper case, 71a Steam port , 71b Front part, 72 Lower case, 72a Guide tube, 72b Neighbor collection recess, 72c Valve body, 72d Open / close valve, 80 micro Switch, 81 push button, 83 reed switch, 84 magnet, 89 magnet, 100 rice cooker.

Claims (4)

A main body having a heating means for heating the stored inner pot;
A lid that is rotatably provided in the main body, and opens and closes an opening of the inner hook housed in the main body;
A steam discharge container that is detachably attached to the upper part of the lid, separates the steam and the steam by taking steam including the steam generated in the inner pot during cooking, and discharges only steam to the outside; ,
An operation unit having a rice cooking key for starting rice cooking;
Container detection means for detecting whether or not the steam discharge container is mounted;
When detecting the start of rice cooking from the rice cooking key, if the installation of the steam discharge container is not detected by the container detection means, the rice cooking is provided with control means for stopping the rice cooking start vessel. Providing a notification means,
2. The rice cooker according to claim 1, wherein when the container detection unit does not detect the installation of the steam discharge container, the control unit prompts the installation of the steam discharge container through the notification unit.   The control means controls the heating power of the heating means so as not to spill when the container detecting means detects that the steam discharge container is detached during cooking rice. 2. The rice cooker according to 2.   The said container detection means is either a micro switch or a reed switch, The rice cooker in any one of Claims 1-3 characterized by the above-mentioned.

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