JPH0298318A - Electric heating vessel - Google Patents

Abstract

PURPOSE:To contrive simplification in the structure of a cover unit and reduction in cost by providing a heat insulator which has been enclosed in a closed condition, on the underside of the cover unit, and fitting the heat insulator so as to be detachable from the cover provided on the upper side of the cover unit. CONSTITUTION:A cover unit 11 is detachably fitted to an outer case 1 by means of a detachable hinge mechanism. And, the circumferential peripheral part 93 of an inner cover 9 is formed so as to be projected and suspended outward from a projection 94, so that when the top of the outer case 1 is closed by the cover unit 11, it can be abutted on the opening peripheral part 50 of an inner vessel 5. Thereby the inner cover 9 can be directly heated via the inner vessel 5, and the formation of dew drops on the underside of the inner cover 9 can be prevented. Thus, in the cover unit 11, the need of the conventional electric appliance such as a cover heater can be dispensed with, and the number of parts can be significantly reduced. Consequently, the structure of the cover unit 11 can be greatly simplified, and cost reduction in an electric rice cooker can be contrived.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to an electric heating container that can simplify the drawing of a lid unit of an electric rice cooker, an electric pot, etc., and also allows the lid unit to be washed with water.

<Prior art> Conventionally, in electric heating containers such as electric rice cookers and electric pots, an inner container is provided inside an outer case, an inner pot is housed in the inner container, and an inner lid is covered with the inner pot. Provided with a lid. For example, in an electric rice cooker, which is an electric heating container, a lid heater installed in the lid unit heats the inner lid to prevent condensation from forming on the underside of the inner lid, or to prevent the inner pot from forming. Heating is done from the top.

As shown in FIG.
A lid heater (108) for heating the inner lid (109) is provided at approximately the center of the lid unit (110). It is the composition.

To be more specific, the lid unit (110) includes:
To the outer case (100) at the hinge part (112),
Connected so they can be opened and closed. And the lid unit (11
0), electrical components such as lead wires (Ill) for connecting to the lid heater (108) are provided at predetermined positions.

<Problem to be solved by the invention> However, in the above electric rice cooker, the lid unit (11
0) is equipped with electrical components such as the lid heater (108) and lead wires (Ill), so the F of the lid unit (110)
The M construction became very complicated and the number of parts increased, creating a problem that it was not possible to provide an electric rice cooker at a low cost.

Furthermore, in the above electric rice cooker, the outer case (100
) side to the lid unit (110) side, the lid heater (10
Since the lead wire (ill) for 8) is introduced, the lid unit (110) has a structure that cannot be removed from the outer case (100). For this reason, the lid unit (110) must be opened at a location where there is sufficient space, resulting in an inconvenience that the installation location is restricted.

Moreover, when cleaning the slime adhering to the lower surface of the inner lid (109) and the lid unit (110), the inner lid (109)
However, since the lid unit l' (110) itself cannot be removed from the outer case (100), it cannot be washed directly with water. In this respect, it is extremely unsanitary, and improvements have long been desired.

This invention was made in view of the above problems,
In addition to simplifying the structure of the lid unit and reducing costs, the lid unit can be completely removed from the outer case.
The purpose is to provide an electric heating container whose lid unit can be washed directly with water.

Means for Solving the Problems> In order to achieve the above object, the electric heating container of the present invention is provided with a heating element that directly or indirectly heats the inner lid near the mouth edge of the inner container, The lid unit is removably attached to the outer case, and a heat insulating body is provided on the lower side of the lid unit to seal the internal heat insulating material to prevent water from entering. The insulation body,
It is characterized in that it is removably attached to the lid cover provided on the upper side of the lid unit.

Further, a back plate is provided on the lowermost surface of the lid unit, a heat insulator is interposed between the back plate and the lid cover, and the back plate is removably attached to the lid cover and the heat insulator. Also good.

With the electric heating container configured as described above, the heating element is provided near the rim of the inner container, so the inner lid can be heated directly or indirectly from the rim of the inner container, which is different from conventional methods. As shown in the figure, it is not necessary to provide the lid unit with electrical components such as a lid heater.

In addition, since the lid unit is removably attached to the outer case, the lid unit can be opened even if there is no space to open and close the lid unit by rotating it around the hinge part as in the conventional case. At the same time, the lid unit can be removed from the outer case and washed directly with water.

Furthermore, since the heat insulating body provided on the bottom side of the lid unit is removably attached to the lid cover provided on the top side of the lid unit, there is no possibility that slime or limescale may adhere to the lid cover or the heat insulating body. However, dirt can be removed by washing the lid cover and insulation separately.

Moreover, in the above-mentioned heat insulating body, the heat insulating material loaded inside the heat insulating body is hermetically covered by the outer layer to prevent water from entering, so even if it is permanently stored, water will not infiltrate into the inside of the heat insulating body. There is no.

Then, if a heat insulator is interposed between the back plate provided on the lowest surface of the lid unit and the lid cover, and the back plate is removably attached to the lid cover and the heat insulator, the lid cover , the insulation body and the back plate can be removed from the outer case and washed.

<Example> Hereinafter, embodiments will be described in detail with reference to the accompanying drawings showing examples.

FIG. 1 is a longitudinal sectional view showing an electric rice cooker as an electric heating container of the present invention. The electric rice cooker consists of a cylindrical side member (2) formed of a thin metal plate;
A synthetic resin bottom member (3) formed on the lower side of the side member 0 and a synthetic resin shoulder member (4) formed on the upper side of the side member 0.
It is mainly composed of an outer case (1) consisting of an outer case (1), and a lid unit (11) which is covered on the upper surface of the outer case (1) so as to be openable and closable. A cylindrical inner container (5) is provided inside the outer case (1), and an inner pot (6) for cooking rice is removably housed inside this inner container (5). are doing. In addition, the inner container (5) and the side member (2)
A heat insulating material (30) is filled between the two to prevent heat radiation. Further, a center sensor (40) is attached to a penetration portion formed at the center of the bottom surface of the inner container (5). Furthermore, a hot plate (41) is provided between the bottom surface of the inner pot (6) and the inner container (5), and this hot plate (41) has an annular shape that directly heats the inner pot (6). bottom heater (42
) is buried so as to surround the center sensor (40).

Further, a heating element (8) that directly heats the inner lid (9) is provided near the mouth edge (50) of the inner container (5), and a peripheral edge (93) of the inner lid (9) is provided. It is in contact with the mouth edge (50) of the inner container (5).

The lid unit (11) is composed of a lid cover (lla) that covers the upper side and an insulator (12) for preventing heat radiation disposed on the lower side, and has a divisible double structure. There is. Further, the lid unit (11) is removably attached to the outer case (1) by a removable hinge mechanism (not shown).

More specifically, as shown in FIGS. 2 and 3, the lid cover (lla) is made of synthetic resin,
A locking hole (14) into which a one-touch bottle (15) is inserted and locked is formed in the center thereof, and a one-touch pin (15) is formed inside this locking hole (14).
A one-touch seal (16) for locking is attached by a fixing member (16a). Further, an engagement mechanism (not shown) for opening and closing the lid unit (11) with respect to the outer case (1) is provided at a predetermined position of the lid cover (lla).

The heat insulator (12) is composed of an outer layer (12a) made of synthetic resin, for example, formed by blow molding or the like, and an inner heat insulator (12b). The heat insulating material (12b) is provided with an outer layer (12b) to prevent water from entering.
2a) in a hermetically sealed manner.

The inner container (5) has an annular recess (51) formed near its mouth edge (50), and the heating element (8) is housed in this recess (51). Then, the recessed portion (5
1), a plurality of through holes (52) are formed at predetermined positions, and below the through holes (52) there is a guide plate (53) that partially hangs down from the fourth part (51). is provided. Further, above the mouth edge (50) of the inner container (5), an annular body (80) made of resin or the like having high thermal conductivity and high elasticity is provided, and this annular body (80)
An elastic tongue portion (82) is formed on the lower surface of the holder. The tongue portion (82) has a mating portion (86) that prevents it from coming out when inserted into the through hole (52), and the tongue portion (82) is connected to the guide plate (53). By inserting it into the through hole (52) along the
is engaged with the mouth edge of the through hole (52) of the inner container (5), and the annular body (80) is inserted into the inner container (
It is formed so that it can be fixed to the mouth edge (50) of 5).

A lead wire is connected to the heating element (8) from an electrical component storage section provided below the outer case (1) via a predetermined position inside the outer case (1) (both are not shown). figure).

The inner pot (6) and the inner lid (9) are entirely made of a material with high thermal conductivity, for example, a metal such as aluminum. When the inner lid (9) is covered with the inner pot (6), a protrusion (9
4) is formed, and this protrusion (94) has an inner pot (
The inner lid (9) is designed so that the gasket (7), which can adhere to the mouth edge (60) of the inner lid (6) and the lower surface of the insulator (12), will not easily come off even when the inner lid (9) is washed. ) is integrated into the Further, a cylindrical one-touch pin (15) that also serves as a pressure adjustment port (13) is fixed to the upper surface side of the central portion of the inner lid (9) so as not to be exposed on the lower surface side. Then, the heat insulator (12) is interposed below the lid cover (lla), and the one-touch pin (15) is connected to the lid cover (lla).
The heat insulator (12) is attached to the lid cover (lla) by locking it to the one-touch gasket (1G) of la), and the inner lid (9) is removed from the lid unit (11). Installed as possible. In addition, between the heat insulating body (12) and the one-touch pin (15), there is a gasket (15a) fixed to the one-touch pin (15) side in order to prevent steam from flowing out from other than the pressure regulating port (13).
) is sealed. In this way, the central part of the inner cover (9) is not provided with a conventional locking hole for one-touch pin locking, and furthermore, the peripheral part (93) of the inner cover (9) is , protrudes and hangs outward from the protrusion (94) so that it can come into contact with the mouth edge (50) of the inner container (5) when the top surface of the outer case (1) is closed with the lid unit (11). It is formed by letting The gaskets (7) (15a) (1B) are made of a material with excellent heat resistance and elasticity, such as silicone rubber.

With the above configuration, the heating element (8) is provided near the mouth edge (50) of the inner container (5), and the peripheral edge (93) of the inner lid (9) is connected to the inner container (5). Since it is in contact with the mouth edge (50) of the inner lid (50), the inner M (9) can be directly heated through the inner container (5), preventing dew condensation from forming on the lower surface of the inner lid (9). can do. Therefore, the lid unit (11) does not require electrical components such as the conventional lid heater (108) or lead wires (111), and the number of parts can be significantly reduced. Therefore, the structure of the lid unit (11) can be greatly simplified, and the cost of the electric rice cooker can be reduced.

In addition, since the lid unit (11) is removably attached to the outer case (1), it can be opened and closed easily even in places where there is no space to open and close the hinge part like in the past.
Not only can the lid unit (11) be opened, but it can also be completely removed from the outer case (1) and washed directly with water.

Furthermore, a heat insulator (
12) is removably attached to the lid cover (lla) provided on the upper side, so the lid cover (Ila)
Even if dirt, limescale, etc. adhere to the lid cover (lla) and the heat insulating body (12), the dirt can be removed by dividing the lid cover (lla) and the heat insulating body (12) and washing them individually.

Moreover, the heat insulating body (12) has a heat insulating material (
12b) is covered with the outer layer body (12a) in a sealed state to prevent water from entering, so even when washed with water, water can be prevented from entering the inside of the heat insulating body (12).

In addition, since the mouth rim (60> of the inner pot (6) and the inner lid (9) are in close contact with each other via the packing (7), the inner pot (6)
) and the inner lid (9) can be sealed, and the steam in the inner pot (6) can be prevented from leaking outward from between the lid unit (11) and the outer case (1). Furthermore, the space (a) surrounded by the lid unit (II) and the inner lid (9) is connected to a gasket (7) provided on the protrusion (94) of the inner lid (9) and a one-touch pin (15). Fixed packing (15a
), it is possible to prevent steam from flowing out from other than the pressure regulating port (13) and to suppress heat loss of the inner lid (9). Moreover, since the metal surfaces of the inner pot (6) and the inner lid (9) do not come into direct contact, the heat of the inner lid (9) is transferred to the inner pot (
It is possible to prevent heat from being transferred to the inner lid (9) and efficiently heat only the inner lid (9).

Furthermore, since the one-touch pin (15) is attached to the upper surface of the inner lid (9) so as not to be exposed to the lower surface of the inner lid (9), the peripheral edge of the inner lid (9) from the heating element (8) 93)
It is possible to uniformly heat the entire bottom surface of the inner lid (9) up to the center of the inner lid, reliably preventing the formation of condensation and maintaining good heat retention for the inner pot (6) for a long time. condition can be maintained.

Next, as another example, as shown in FIG. 3, a back plate (10) is provided on the lowest surface of the lid unit (11), and between this back plate 00) and the lid cover (lla). Insulator (1
2), and the back plate (10) may be removably attached to the lid cover (lla) and the heat insulator (12).

More specifically, in the center of the lid unit (11), there is a one-touch pin (15) whose upper end (15b) is locked to a holding part (llb) provided inside the lid cover (lla). is provided. And a heat insulator (12)
and back plate 00) are attached to the lid cover (
lla). In addition, a long hole (!0) is provided at the center of the heat insulating body (12) and the back plate (!0) for removing both from the one-touch pin (15).
(not shown) is provided. Further, the inner lid (9) is formed with a central portion (92) passing through it, and a one-touch gasket (16) is attached to this penetrating portion and protrudes below the lid unit (11). The lower end (15d) of the one-touch pin (15) is removably locked. In addition, the above-mentioned lid unit (11)
When removing the inner lid (9), rotate the lower end (15d) of the one-touch pin (15) exposed on the lower surface of the inner cover (9) by 90 degrees, and insert the support part (15a) into the elongated hole. What is necessary is to release the lock between the heat insulator (12) and the back plate (10) and the support portion (15c) of the one-touch pin (15).

Also in the case of this embodiment, as in the above embodiments, the lid unit (11) can be individually removed from the outer case (1) and washed directly with water, and water does not intrude into the inside of the heat insulator (12). can be reliably prevented.

Furthermore, in FIG. s
(6) is not formed to protrude outward, and the inner lid (9)
is a step (61) provided at the rim (60) of the inner pot (6).
Since the lid unit (11) and the inner lid (9
) can be easily created by providing an annular gasket (17) that can come into contact with the mouth edge (60) of the inner pot (6) at a predetermined position on the back plate 00). Can be sealed.

In addition, a heating element (8) provided near the mouth edge of the inner container (5)
Since the peripheral edge (10a) of the back plate 00) is in contact with the inner M(9), the inner M(9) can be indirectly heated by the back plate (10).

Further, as shown in FIG. 3, the engagement mechanism for opening and closing the lid unit (11) includes an engagement part (21) provided at a predetermined position of the lid cover (1ta), and an engagement mechanism for opening and closing the lid unit (11). 21) and a leaf spring (22) whose one end is fixed inside the lid cover (lla). The engagement mechanism is not built into the lid unit (11) and is exposed to the outside when the lid unit (11) is removed, so it can be washed with water together with the lid cover (lla). No water collects inside after cleaning.

Note that the electric heating container of the present invention is not limited to the above embodiments, and for example, the heating element (8) is connected to the shoulder member (4).
) can also be attached directly to the bottom surface of the board with an aluminum plate, etc.

Furthermore, the engagement mechanism of the lid unit (11) with respect to the outer case (1) can be applied with various elastic members other than leaf springs, and the heat insulating body (12) can be formed by a heat insulating material (12b) loaded inside. As long as it is covered with the outer layer body (12a) in a sealed state to prevent water from entering, it can be formed by known molding means, or it can also be formed by bonding means such as adhesive or heat fusion. be able to. In addition, various design changes can be made without changing the gist of the invention.

<Effects of the Invention> As described above, the present invention allows the inner lid to be directly or indirectly heated by the heating element provided near the mouth edge of the inner container. It is possible to prevent dew condensation from forming on the lower surface of the inner lid without installing any electrical components.

Therefore, the lid unit does not require conventional electrical components such as lid heater lead wires, and the number of parts can be significantly reduced. Therefore, the structure of the lid unit can be greatly simplified and the cost of the electric heating container can be reduced.

Furthermore, since the lid unit can be completely removed from the outer case, the lid unit can be easily removed from the outer case even in places where there is no space for opening and closing by rotating the hinge part as in the conventional case. The installation location of the electric heating container is not restricted. The lid unit can be removed from the outer case and washed directly with water.
You can completely wash away slime, limescale, etc., and maintain good sanitary conditions at all times.

Furthermore, since the heat insulator is removably attached to the lid cover, even if slime or limescale builds up on the lid unit, the dirt can be removed by washing the lid cover and the heat insulator individually. Can be done.

In addition, the insulation material loaded inside the insulation body is covered by the outer layer in a sealed state to prevent water from entering, so even if it is washed with water, it will prevent water from entering the inside of the insulation body. No water remains inside the lid unit.
No residual water drips from the lid unit.

If the heat insulator is interposed between the back plate provided on the bottom surface of the lid unit and the lid cover, and the back plate is removably attached to the back plate and the lid cover, This has the extremely excellent effect of providing an electrically heated container in which the lid cover, the heat insulator, and the back plate can be removed from the outer case and washed individually.

[Brief explanation of drawings]

FIG. 1 is a longitudinal cross-sectional view showing one embodiment of the electrically heated container of the present invention, FIG. 2 is an exploded perspective view of the lid unit and the inner lid, and FIG. 3 is the vicinity of the lid unit showing another embodiment. Enlarged sectional view of the main parts of Figure 3. Document related to the person making the amendment (method) % Formula % 7. Contents of the amendment (1) "4, A brief explanation of the drawing...Enlarged sectional view of the main part,'' should be changed to [
4. Brief Description of the Drawings Fig. 1 is a longitudinal sectional view showing one embodiment of the electric heating container of the present invention, Fig. 2 is an exploded perspective view of the lid unit and the inner lid, and Fig. 3 is an exploded perspective view of the electric heating container of the present invention. FIG. 4 is an enlarged cross-sectional view of main parts near the lid unit showing the embodiment, and FIG. 4 is a partial vertical cross-sectional view showing a conventional electric heating container. (1) Outer case, (5) Inner container, (6)
... Inner pot, (8) ... Heating element, (9) ... Inner lid, (
11)...Lid unit, (12)...Insulator, (1
2a)...Outer layer body, (12b)...Insulating material, (lla
)-lid cover, (10)... back plate. ” he corrected. Representative 5, date of amendment order

Claims (1)

[Claims] 1. An inner container is provided inside the outer case, an inner pot is housed in the inner container, an inner lid is placed on the inner pot, and the outer container is covered with a lid unit loaded with a heat insulating material. In an electrically heated container that closes the upper part of the case, a heating element that directly or indirectly heats the inner lid is provided near the mouth edge of the inner container, and the lid unit is removably attached to the outer case. At the same time, a heat insulating body is provided on the lower side of the lid unit, and the inner heat insulating material is covered with an outer layer in a sealed state to prevent water from entering, and this heat insulating body is provided on the upper side of the lid unit. An electric heating container characterized by being removably attached to a lid cover. 2. A back plate is provided on the lowermost surface of the lid unit, a heat insulating layer is interposed between the back plate and the lid cover, and the back plate is removably attached to the lid cover and the heat insulator. An electric heating container according to claim 1 above.