JP7028815B2 - rice cooker - Google Patents

Description

The present invention relates to a rice cooker.

The rice cooker is a place where the upper frame of the main body is particularly liable to get dirty. For example, after cooking rice, dew adhering to the surface of the inner lid may fall when the lid is opened and stain the upper surface of the upper frame of the main body, or when rice is spilled from the inner pot, rice grains may be spilled on the upper frame of the main body. The upper surface may be soiled, and the stain may cause germs to propagate on the upper surface of the upper frame of the main body. Therefore, a rice cooker devised to suppress the growth of various germs has been proposed.

In Patent Document 1, a stainless steel tray is provided on the upper surface of the upper frame of the main body, and the tray is detachably attached to the main body so that the growth of germs can be easily suppressed. ..

Japanese Patent Application Laid-Open No. 2003-265307

In the above-mentioned conventional technique, since the metal tray is detachably arranged on the upper surface of the upper frame of the main body, the metal tray is heated by the heat of the inner pot, so that the temperature rises to about 100 ° C. May reach. Therefore, if you touch it unexpectedly, you may get burned. Further, since the metal tray is widely provided from the inner pot side to the vicinity of the side surface of the main body, there is a problem that the heat of the inner pot is guided to the vicinity of the side surface of the main body and a large amount of heat loss occurs.

An object of the present invention is to suppress the growth of germs without providing a metal tray.

The above purpose is, for example, to cover between the main body, the outer lid covering the upper surface opening of the main body, the outer pot provided in the main body, the upper surface opening of the outer pot and the main body, and a resin material. An upper frame configured by the above, an inner pot detachably stored in the outer pot, an inner lid that covers the upper opening of the inner pot and is attached to the outer lid, and a lower part of the inner pot. In a rice cooker provided with an inner pot heating means for heating the inner pot, the upper surface of the upper frame of the upper frame is coated with an antibacterial coating containing an organic antibacterial agent, and the upper surface of the upper frame of the inner pot is coated with an antibacterial coating. This is achieved by a configuration in which ribs are provided on the side and the outer side of the main body, respectively.

According to the present invention, it is possible to suppress the growth of germs without providing a metal tray.

It is an overall perspective view of a rice cooker. It is a schematic perspective view of the rice cooker with the lid open. It is a side sectional view of the rice cooker. It is a perspective view of the upper frame of the rice cooker. It is the schematic sectional drawing of the coating film composition of the upper frame of the rice cooker.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.

FIG. 1 is an overall perspective view of the rice cooker, FIG. 2 is a schematic perspective view of the rice cooker with the lid open, and FIG. 3 is a side sectional view of the rice cooker (protection means 6 is not displayed).

In the figure, 1 is the main body of the rice cooker. A bottomed outer pot 7 is provided in the main body 1, an inner pot 4 is detachably inserted into the outer pot 7, and an upper frame 5 connected to the main body 1 is provided on the upper part of the outer pot 7. Further, on the upper surface of the main body 1, an outer lid 2 provided with an inner lid 3 that covers the upper surface opening of the main body 1 and the inner pot 4 is provided so as to be openable and closable.

A packing 22 that is in close contact with the flange portion 4a at the upper end of the inner pot 4 is provided on the lower peripheral edge portion of the inner lid 3 to close and seal the upper opening of the inner pot 4.

An operation unit 31 for operating various menus is provided on the upper surface of the outer lid 2 of the main body 1. Further, on the upper surface of the outer lid 2, a display unit 32 composed of a liquid crystal display or the like for displaying the time display, the progress of rice cooking, the setting contents of various menus, etc. is provided, and the rice cooking is started in conjunction with the operation unit 31. You can also set various menus and timer rice cooking.

Further, a handle 33 that can rotate back and forth is attached to the main body 1, so that the main body 1 can be freely carried.

Next, the internal structure of the main body 1 will be described.

The outer lid 2 is provided with a lid heating means 15, which is provided so as to evenly heat the entire surface of the inner lid 3. Further, the outer lid 2 is supported by the hinge shaft 21 so as to be openable and closable to the main body 1.

The inner lid 3 covers the upper opening of the inner pot 4 and keeps airtightness by contact between the packing 22 provided around the inner lid 3 and the flange portion 4a at the upper end of the inner pot 4.

An inner pot heating means 14 for heating the inner pot 4 is provided below the bottom of the outer pot 7, and these are composed of heating coils to induce and heat the portion of the inner pot 4 facing each other.

Further, a temperature sensor 18 is provided at the bottom of the outer pot 7 so as to abut on the outer bottom of the inner pot 4, and the temperature information of the bottom of the inner pot 4 detected by the temperature sensor 18 is input to the control unit 17.

When the outer lid 2 of the upper frame 5 is opened and the dew adhering to the surface of the inner lid 3 falls on the upper surface 5c of the upper frame of the upper frame 5, the dew is on the outside of the main body 1 or on the inner pot 4 side. Ribs are provided on both sides so as not to flow out, and the tip of the rib on the inner pot 4 side is the upper frame upper end portion 5e, and the surface facing the inner pot 4 inside the upper frame upper end portion 5e is the upper frame attachment / detachment portion 5d. It is supposed to be.

The control unit 17 controls the operations of the inner pot heating means 14 and the lid heating means 15 based on the temperature information of the inner pot 4 from the temperature sensor 18.

The inner lid 3 is placed on the inner lid steam passage 11 through which the steam generated in the inner pot 4 penetrates, the outer lid steam passage 12 connected to the exhaust port 8 of the main body 1, and the upper surface of the inner lid steam passage 11. It is composed of a pressure adjusting means 13 that closes the inner lid steam passage 11.

The pressure adjusting means 13 is configured such that the pressure adjusting ball 13a is provided on the pressure adjusting table 13b formed by narrowing the passage from the inner lid steam passage 11 penetrating the inner lid 3. Then, when the vapor pressure inside the inner pot 4 becomes higher than the predetermined pressure, the pressure adjusting ball 13a is lifted, the pressure is released from the outer lid steam passage 12, and the pressure is discharged to the outside of the main body 1 through the steam port 8. When the pressure becomes lower than the predetermined pressure, the pressure adjusting ball 13a again blocks the inner lid steam passage 11 and the vapor pressure increases. By repeating this process, the pressure inside the inner pot 4 and the inner lid 3 is adjusted to a predetermined pressure.

Further, the pressure adjusting ball 13a is arbitrarily moved by an opening means 16 including a solenoid operated by a signal from the control unit 17, and the pressure of the inner pot 4 can be freely adjusted.

FIG. 4 is a perspective view of the upper frame of the rice cooker, and FIG. 5 is a schematic cross-sectional view of the coating film configuration of the upper frame of the rice cooker.

As shown in FIG. 5, the upper frame 5 covering the upper part of the main body 1 has an outer coating 5a which is an appearance color and a top coat (antibacterial paint) on the outer surface which is the upper surface 5c of the upper frame 5. ) 5b is painted.

For both the undercoat 5a and the topcoat 5b (antibacterial paint) that coat the top frame 5, if the coating film is too thick, the paint will drip or accumulate, so the undercoat has a film thickness of 15 μm or less and the topcoat has a film thickness of 35 μm or less. Further, since the material of the upper frame 5 can be adhered to the paint and it is necessary to select a resin having high rigidity in order to maintain the function as the frame body of the main body, PBT (poly) is used in this embodiment. Butylene terephthalate) is used.

Further, in this embodiment, the undercoat is applied in order to give an appearance color with an emphasis on designability, but when the hue of the resin material itself of the upper frame 5 is used as the appearance color, only the topcoat (antibacterial paint) 5b is applied. It may be a coating film composition to be painted.
The antibacterial paint contains an organic antibacterial agent or an inorganic antibacterial agent. The effects of organic antibacterial agents are mainly on molds and algae, and some are effective on bacteria. The advantages are that it has been used for a long time, the amount of addition may be small, it is cheaper than inorganic materials, and it has good dispersibility in paints. As an effect of the inorganic antibacterial agent, it is mainly effective against bacteria. The advantages are high safety, good heat resistance, good antibacterial property, and good durability.
As an organic antibacterial agent, 2- (4Thiazolyl) benzimidazole: imidazole, N- (Fluorodichloromethylthio) phthalimide: trihalomethylthio, 2,4,5,6-Tetrachloroisophthalonitrile: nitrile, 2-Octyl-4-isothiazolin-3- one: Isothiazolinone-based, Benzalkonium chloride: quaternary ammonium salt can be used. As the inorganic antibacterial agent, silver zeolite, silver zirconium phosphate, silver hydroxyapatite, silver phosphate glass, and silver phosphate ceramic can be used.

However, in this embodiment, the upper frame attachment / detachment portion 5d of the inner pot 4 is not painted in the upper frame 5.

This embodiment has the above configuration, and then the operation of the rice cooking process will be described.

The user puts the required amount of washed rice and an appropriate amount of water in the inner pot 4, stores it in the main body 1, and closes the outer lid 2.

Next, rice cooking is started by operating the operation buttons on the operation unit 31. The process set by the user is controlled by the operation of the inner pot heating means 14 and the lid heating means 15 according to the amount of cooked rice based on the temperature information of the temperature sensor 18 according to the rice cooking program stored in the control unit 17. 4 is heated.

Eventually, when the inside of the inner pot 4 boils, the pressure adjusting function works by the pressure adjusting means 13, and the steam that has passed through the pressure adjusting means 13 is ejected from the steam port 8 to adjust the amount of steam to adjust the inside of the inner pot 4. Keep constant pressure.

After that, when the temperature sensor 18 detects that the temperature at the bottom of the inner pot 4 suddenly rises when the water inside the inner pot 4 runs out, the control unit 17 weakens the heating and shifts to the steaming process to steam for a certain period of time. And rice cooking is completed.

Next, the situation after cooking rice will be described.

When the outer lid 4 is opened to remove the cooked rice, dew adhering to the surface of the inner lid 3 may fall on the upper surface 5c of the upper frame 5. If the upper surface 5c of the upper frame gets wet, there is no problem if it is wiped immediately, but if it is left as it is, it may remain as scale.

In addition, when the rice is cooked, the rice grains may be dropped on the upper surface 5c of the upper frame and become dirty. Furthermore, if the dropped rice grains are left as they are without being noticed, germs may propagate on the upper surface 5c of the upper frame. Further, dirt may stick to the upper surface 5c of the upper frame and remain as stubborn dirt.

However, by coating the surface of the upper surface 5c of the resin-made upper frame with a top coat (antibacterial paint) 5b, it is possible to suppress the growth of various germs.
As described above, by applying antibacterial coating to the upper frame surface 5c of the upper frame 5, it is possible to provide a rice cooker capable of suppressing the growth of various germs.

1 Main body 2 Outer lid 3 Inner lid 4 Inner pot 4a Flange part 5 Upper frame 5a Undercoat 5b Topcoat (antibacterial coating)
5c Upper surface of upper frame 14 Inner pot heating means 15 Lid heating means 17 Control unit

Claims (1)

With the main body
An outer lid that covers the upper surface opening of the main body,
The outer pot provided inside the main body and
An upper frame made of a resin material, which covers between the upper surface opening of the outer pot and the main body,
The inner pot, which is detachably stored in the outer pot,
An inner lid that covers the upper opening of the inner pot and is attached to the outer lid,
In a rice cooker provided below the inner pot and provided with an inner pot heating means for heating the inner pot.
An antibacterial coating containing an organic antibacterial agent is applied to the upper surface of the upper frame of the upper frame.
A rice cooker characterized in that ribs are provided on the upper surface of the upper frame on the side of the inner pot and on the outer side of the main body.

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