JP2015016179A - Warmer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a warmer with excellent safety property and usability.SOLUTION: The warmer comprises: an outer pot 10 which has an open top; a heater 50 for heating the outer pot 10; an inner pot 30 which has an open top and is housed inside the outer pot 10. The bottom face of the inner pot 30 is in contact with warming water stored in the outer pot 10 while the inner pot 30 is housed in the outer pot 10; and the inner pot 30 can be fixed to the outer pot 10 while the inner pot 30 is housed in the outer pot 10.

Description

  The present invention relates to a warmer that keeps food such as cooked rice.

  DESCRIPTION OF RELATED ART Conventionally, the warmer which heats cooked rice with an electric heater etc. like the rice cooker with a heat retention function which heats the cooked rice is known (for example, refer patent document 1). In Patent Document 1, a pan containing cooked rice is accommodated in the inner frame portion, and the pan is heated by a hot water bath type by heating water placed in the inner frame portion with a heater provided at the bottom of the inner frame portion. A warmer that keeps cooked rice in a pan is disclosed.

Registered Utility Model No. 3055204

  However, in the incubator described in Patent Document 1, when the cooked rice is used, the pan may rotate or vibrate, which is problematic in terms of usability. In addition, when the incubator rolls over, the pan comes off from the main body, and there is a problem that the water for keeping warm in the inner frame portion overflows, resulting in an accident such as a burn.

  Then, this invention is made | formed in view of these points, and it aims at providing the warmer excellent in safety | security and usability.

  In the present invention, an outer pot having an opening on the upper surface, a heating unit for heating the outer pot, an inner pot having an opening on the upper surface and housed inside the outer pot, and the bottom of the inner pot The outer surface is in contact with the warming water stored in the outer pot with the inner pot accommodated in the outer pot, and the inner pot can be fixed to the outer pot while being accommodated in the outer pot. Provide a warmer.

  In addition, the outer pot has an outer pot protruding portion that protrudes to the inside of the outer pot, and the inner pot has an inner pot protruding portion that protrudes to the outside of the inner pot, The inner pot is fixed to the outer pot by engaging with the pan protrusion. Moreover, you may engage an outer pot protrusion part and an inner pot protrusion part by rotating an inner pot inside an outer pot.

  Further, the outer pot protrusion has a through hole into which the inner pot protrusion is inserted, and the outer pot protrusion and the inner pot protrusion are engaged by inserting the inner pot protrusion into the through hole. May be combined.

  In addition, a water level line is provided on the side surface of the outer pot, and the outer surface of the bottom of the inner pot is positioned below the water level line with the inner pot accommodated inside the outer pot. May be. Furthermore, in the state where the inner pot is accommodated in the outer pot, the distance between the outer surface of the bottom of the inner pot and the inner surface of the bottom of the outer pot is, for example, 1 cm or more and 2 cm or less.

  According to the present invention, there is an effect of improving the safety and usability of the warmer.

It is a perspective view of the warmer according to the first embodiment. It is sectional drawing of the warmer which concerns on 1st Embodiment. It is a schematic diagram of the bottom part periphery of the outer pan which concerns on 1st Embodiment. It is a figure which shows the structure of the heating part which concerns on 1st Embodiment. It is a top view of the outer pan concerning a 1st embodiment. It is AA sectional view taken on the line of the outer pan which concerns on 1st Embodiment. It is a side view of the inner pot concerning a 1st embodiment. It is a figure which shows the inner pot protrusion part which concerns on 1st Embodiment.

<First Embodiment>
[Configuration of Insulator 1]
FIG. 1 is a perspective view showing a warmer 1 according to the first embodiment. The warmer 1 includes an outer pot 10, an outer frame 20, an inner pot 30, and a lid 40. The incubator 1 can accommodate the cooked rice that needs to be stored in the inner pot 30 while being kept at a constant temperature.

  The outer pan 10 is made of stainless steel, for example, and is a container having an opening on the upper surface and a substantially cylindrical side surface. A flange is provided on the upper portion of the outer pot 10, and the outer pot 10 is fixed to the outer frame 20 by the flange contacting the upper end portion of the outer frame 20. The outer frame 20 is provided with wood pieces such as Japanese cypress and sawara on the outer peripheral surface, and has an appearance characteristic as “rice cake” for keeping cooked rice and the like warm.

  Inside the outer pot 10, an inner pot 30 having an opening on the upper surface and having a substantially cylindrical side surface is accommodated. The inner pot 30 is made of stainless steel, for example, and is a container having an opening on the upper surface and a substantially cylindrical side surface. Since the inner pot 30 contains food such as cooked rice and is heated, it may be made of stainless steel processed with a heat-resistant resin for the purpose of preventing scorching. Since the inner pot 30 is accommodated inside the outer pot 10, the diameter of the inner pot 30 is smaller than the diameter of the outer pot 10. A flange 31 is provided on the upper portion of the inner pot 30.

  The lid 40 is made of a plurality of pieces of wood, like the outer peripheral portion of the outer frame 20, and is detachably attached to the upper portion of the outer pot 10, the outer frame 20, and the inner pot 30; By covering the opening of the outer pot 10 and the inner pot 30 with the lid 40, the heat retaining property of the cooked rice accommodated in the inner pot 30 can be enhanced.

  Next, the function of the warmer 1 will be described with reference to FIGS. 2 and 3. FIG. 2 is a cross-sectional view of the warmer 1. FIG. 3 is a schematic view of the periphery of the bottom of the outer pot 10 in a state where water for keeping warm is contained.

  As shown in FIG. 2, the inner pot 30 is accommodated inside the outer pot 10, and in the state accommodated inside the outer pot 10, the outer surface of the bottom portion of the inner pot 30 and the bottom portion of the outer pot 10. There is a gap between the inner surface. The size of the gap is, for example, not less than 1 cm and not more than 2 cm. Water for keeping the inner pot 30 warm (hereinafter referred to as “water for warming”) is stored in the gap between the inner pot 30 and the outer pot 10. The stored water may be cold water or hot water.

  A heating unit 50 for heating the outer pot 10 is provided at the lower portion of the outer pot 10. In addition, a bottom cover 60 is provided at the lower portion of the outer pan 10, and a power plug for detachably inserting the power cord 70 into the bottom cover 60 and connecting it and an operation unit 54 that functions as a switch are attached. . When the user operates the operation unit 54, the heating unit 50 generates heat and heats the outer pot 10.

  When the heating unit 50 heats the outer pot 10, the heat retaining water is heated. The outer surface of the bottom of the inner pot 30 is in contact with the heat retaining water stored in the outer pot 10 in a state where the inner pot 30 is accommodated in the outer pot 10. When the outer surface of the bottom of the inner pot 30 is in contact with the heated water for keeping warm, the whole cooked rice accommodated in the inner pot is heated evenly, and a constant temperature can be maintained.

  A water level line is provided on the side surface of the outer pot 10, and the outer surface of the bottom of the inner pot 30 is below the position of the water level line with the inner pot 30 housed inside the outer pot 10. To position. That is, the position of the water level line is a position higher than the outer surface of the bottom of the inner pot 30 when the inner pot 30 is fixed to the outer pot 10. Since the outer surface of the bottom of the inner pot 30 is positioned below the water level line, there is an effect that an appropriate amount of heated water for warming can uniformly warm the bottom surface of the inner pot 30.

  Moreover, the inner pot 30 can be fixed to the outer pot 10 while being accommodated in the outer pot 10. The detail of the fixing method of the outer pot 10 and the inner pot 30 is mentioned later.

  Next, details of the heating unit 50 will be described with reference to FIG. FIG. 4 is a diagram illustrating a configuration of the heating unit 50 according to the embodiment. The heating unit 50 includes a heater 51, a temperature sensor 52, a control unit 53, and an operation unit 54.

The heater 51 is provided in the bottom part of the outer pot 10, and heats the heat-retaining water put in the outer pot. The heater 51 is, for example, a mica heater, an aluminum nitride heater, a polyimide heater, or a silicon rubber heater.
The temperature sensor 52 is attached to the bottom of the outer pot 10 and detects the surface temperature of the outer pot 10.

  The control unit 53 performs control related to temperature adjustment of the heater 51 based on the temperature detected by the temperature sensor 52. The control unit 53 includes a microcomputer that controls energization to the heater 51 and temperature adjustment, a switching element, and the like, and the heat retention temperature is set to, for example, a low temperature (33 ° C. to 35 ° C.) according to the operation state in the operation unit 54. The temperature is switched to one of three temperature ranges of medium temperature (40 ° C. to 50 ° C.) and high temperature (50 ° C. to 60 ° C.).

  The operation unit 54 is attached to the side surface of the bottom cover 60 at the lower part of the outer pan 10, and is a switch for turning on / off the power to the heater 51 and is also used as a rotary knob for adjusting the heat retention temperature. For example, when the switch of the operation unit 54 is pressed, the power is turned on, and when the switch of the operation unit 54 is pressed again, the power can be turned off.

  Further, by rotating the switch of the operation unit 54, the heat retention temperature can be switched to one of three temperature ranges of low temperature, medium temperature, and high temperature. By doing in this way, heat insulation temperature can be made appropriate according to the kind of rice, such as white rice and sushi rice.

[How to fix the outer pot and inner pot]
Next, each structure of the outer pot 10 and the inner pot 30 and the fixing method of the outer pot 10 and the inner pot 30 will be described with reference to FIGS. 5 to 8. FIG. 5 is a top view of the outer pot 10 in the present embodiment. FIG. 6 is a cross-sectional view of the outer pot 10 taken along line AA in FIG.

  The outer pot 10 has an outer pot protruding portion 11 protruding inside the outer pot 10. The outer pot protrusion 11 is a metal member attached to the inner wall portion of the outer pot 10. As shown in FIG. 6, the outer pot protrusion 11 is formed in a cylindrical shape having a through hole.

FIG. 7 is a side view of the inner pot 30 in the present embodiment. FIG. 8 is a side view of the inner pot protrusion 32 shown in FIG.
The inner pot 30 has an inner pot protrusion 32 that protrudes to the outside of the inner pot 30. As shown in FIG. 7, the inner pot protrusion 32 is a metal member provided on the lower surface of the flange 31 formed on the upper part of the inner pot 30. As shown in FIG. 8, the inner pot protrusion 32 is formed in a crank shape by bending a metal plate 90 degrees downward and further 90 degrees horizontally.

  The inner pot 30 is fixed to the outer pot 10 by the engagement of the outer pot protrusion 11 and the inner pot protrusion 32. Specifically, the outer pot protrusion 11 and the inner pot protrusion 32 are engaged by rotating the inner pot 30 inside the outer pot 10. That is, when the inner pot 30 is rotated in a state of being accommodated in the outer pot 10, the inner pot protrusion 32 is inserted into the through hole of the outer pot protrusion 11 and the inner pot 30 is engaged with the outer pot 10. Fixed.

  By fixing the inner pot 30 to the outer pot 10, it is possible to prevent the inner pot 30 from rotating or vibrating when the cooked rice is used, and when the incubator 1 rolls over, Therefore, it is possible to prevent the warming water stored in the inner pot 30 or the outer pot 10 from coming out.

  In a state where the inner pot 30 is fixed to the outer pot 10, the distance between the outer surface of the bottom of the inner pot 30 and the inner surface of the bottom of the outer pot 10 is preferably 1 cm or more and 2 cm or less. When the outer surface of the bottom of the inner pot 30 and the inner surface of the bottom of the outer pot 10 are less than 1 cm, the amount of heat retaining water stored in the gap between the outer pot 10 and the inner pot 30 is small. The warming time is short, and there is a possibility of airing. On the other hand, when the distance between the outer surface of the bottom of the inner pot 30 and the inner surface of the bottom of the outer pot 10 is 2 cm or more, a large amount of heat retaining water is required. It takes too long to reach a sufficient temperature.

  Therefore, the distance between the outer surface of the bottom of the inner pot 30 and the inner surface of the bottom of the outer pot 10 is preferably 1 cm or more and 2 cm or less, and in this way, an appropriate amount of heat retaining water is heated, The temperature of the cooked rice stored in the inner pot 30 can be maintained for a certain time.

<Second Embodiment>
[The inner pot 30 is fixed by a helical engagement portion]
Next, the second embodiment will be described. The second embodiment is different from the first embodiment in that the outer pot protrusion and the inner pot protrusion have spiral grooves that engage with each other, and are the same in other respects.

  Specifically, the outer pot protrusion has a spiral groove formed in the inner wall portion of the outer pot 10 in the vicinity of the flange of the outer pot 10. The inner pot protrusion has a spiral groove formed in the outer wall portion of the inner pot 30 near the flange of the inner pot 30. The outer pot protrusion and the inner pot protrusion are engaged by rotating the inner pot 30 inside the outer pot 10. Thus, the outer pot 10 and the inner pot 30 are fixed by rotating the inner pot 30 inside the outer pot 10 and engaging the outer pot protrusion and the inner pot protrusion which are spiral grooves. Is done. The outer pot 10 and the inner pot 30 have such a shape to prevent the inner pot 30 from coming off when the incubator 1 rolls over, and the stored water or the warming water inside the outer pot from overflowing. can do.

  As mentioned above, although this invention was demonstrated using embodiment, the technical scope of this invention is not limited to the range as described in the said embodiment. It will be apparent to those skilled in the art that various modifications or improvements can be added to the above-described embodiment. It is apparent from the scope of the claims that the embodiments added with such changes or improvements can be included in the technical scope of the present invention.

DESCRIPTION OF SYMBOLS 1 Incubator 10 Outer pan 11 Outer pan protrusion part 20 Outer frame 30 Inner pot 31 Flange 32 Inner pot protrusion part 40 Lid 50 Heating part 51 Heater 52 Temperature sensor 53 Control part 54 Operation part 60 Bottom cover 70 Power cord

Claims (6)

An outer pot having an opening on the upper surface;
A heating unit for heating the outer pot;
An opening on the upper surface, and an inner pot accommodated inside the outer pot,
The outer surface of the bottom of the inner pot is in contact with the heat-retaining water stored in the outer pot, with the inner pot accommodated in the outer pot,
The inner pot can be fixed to the outer pot in a state of being accommodated in the outer pot.
Insulator. The outer pot has an outer pot protruding portion protruding inside the outer pot,
The inner pot has an inner pot protrusion that protrudes outside the inner pot,
By engaging the outer pot protrusion and the inner pot protrusion, the inner pot is fixed to the outer pot,
The warmer according to claim 1. The outer pot protrusion and the inner pot protrusion are engaged by rotating the inner pot inside the outer pot,
The warmer according to claim 2. The outer pot protrusion has a through hole into which the inner pot protrusion is inserted,
The outer pot protrusion and the inner pot protrusion are engaged by inserting the inner pot protrusion into the through hole,
The incubator according to claim 2 or 3. A water level line is provided on the side of the outer pan,
The outer surface of the bottom of the inner pot is located below the water level line, with the inner pot housed inside the outer pot.
The warmer according to any one of claims 1 to 4. In a state where the inner pot is accommodated in the outer pot, the distance between the outer surface of the bottom of the inner pot and the inner surface of the bottom of the outer pot is 1 cm or more and 2 cm or less.
The incubator according to any one of claims 1 to 5.

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