JPH01221118A - Heating device for hot insulation container for food - Google Patents

Abstract

PURPOSE:To obtain a heating device for a hot insulating container for food, which can be easily handled and transmit a highly safe heat uniformly, by providing a battery as a power source, a power source storage box incorporating a switch mechanism and an electrical heater carried by the power source storage box and radiating heat toward the bottom rear surface of the hot insulating container. CONSTITUTION:A heating chamber 20 is composed of a battery 21 as a power source, a power source storage box 23 incorporating a switch mechanism 22, and an electrical heater 24 carried by the storage box 23 and radiating heat toward the bottom rear surface of a hot insulating container 10. The electrical heater 24 has an electrical heating substrate 26 through which a shaft 27 pierces at the center thereof and projects by a long distance therefrom so that the outer surface of the substrate 26 does not make contact with the bottom of the outer housing 12 of the container 10. Thereby, it is possible to prevent risks and to aim at uniformly distributing the temperature of heat.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a heater for keeping cooked food warm so that it does not cool down, and mainly relates to a heating device for a food insulating container placed on a table. be.

(Prior art and its problems) Cooking food heat-insulating containers are used in hotels and banquet halls, for example, during buffet-style banquets.

Conventionally, in this kind of food insulation container, hot water (water) as a heat retention medium is placed between the middle container in which food is served and the outer container that encloses the middle layer, and this hot water is poured into the outer container. The structure was such that the temperature was kept constant by heating from the bottom of the tank with an open flame such as a candle, alcohol lamp, solid fuel, etc.

However, using an open flame to keep warm requires careful handling and is not a good idea from a fire prevention standpoint.

Further, while the fire is being used, the person in charge of the venue and other employees in charge cannot take their eyes off them, and at least one of the employees is forced to manage the fire to prevent danger.

The present invention has been made with the aim of solving such problems.

(Means for solving problems) The heating device for a cooking food insulation container according to the present invention is as follows.

In a heating device for a food insulating container in which hot water as a heat retention medium is filled between a middle container in which food is served and an outer container that encloses the middle layer.

The heating device concerned.

With storage batteries as a power source.

The structure consists of a power storage box equipped with a switch mechanism for storing a storage battery, and an electric heater carried by the power storage box and directed toward the back side of the food warming container, and furthermore, the electric heating device has a heating wire. With an electric heating base placed on the surface.

It has a shaft that extends vertically from above the surface of the electric heating base through almost the center of the electric heating base and is fixed integrally with the electric heating base, and a shaft hole through which the lower part of the shaft is slidably inserted in the axial direction. It consists of a case body that covers the electric heating base from the bottom of the base to the sides, and a spring that is interposed between the case body and the electric heating base.

By placing the top end of the shaft on the back of the cooking food insulation container,
The surface of the electric heating base is constructed so that a constant distance from the back surface of the food warming container is always maintained.

(Example) The present invention will be described below based on drawings showing an example of implementation.

In FIG. 1, 10 is a food insulating container, and 20 is a heating device thereof.

The food insulating container 10 is a medium container 1 in which food is served.
1, an outer container 12 that surrounds the middle container 11,
It is composed of a lid 13 that covers the outer container 12 from above, and legs 14 that support the outer container 12.

The middle container 11 is dish-shaped and has a brim-like edge 11A on the outer periphery, and the edge 11A is hooked onto the edge 12A of the outer container 12 and is housed in the outer container 12 so as to fall into the inner container 12.

It is formed into a shape corresponding to the shape of the outer case 12 so that a gap 15 is left between the inner surface of the outer case 12 and the inner surface of the outer case 12 from the bottom side to the side surface thereof when it is housed in the outer case 12.

Hot water (water) is poured into this gap 15 as a heat retaining medium.

The heating device 20 is located below the bottom of the food warming container lO,
That is, it is placed below the bottom of the outer container 12.

In the embodiment, it is placed on a shelf 16 that extends from the lower part of the outer container 12 and is formed to be a flat plate below the back bottom.

In this way, heating equipment! Storage stand for placing 120 (1
If 6) is provided integrally with the food warming container 10, the heating device 20 can be carried together with the cooking food warming container 10.

In addition, in the food heat-insulating container 10 that is not equipped with such a mounting table (16), the heating device 20 is placed directly on the tabletop.

In FIGS. 1 and 2, the heating device 20 of the present invention includes a storage battery 21 as a power source,
It is composed of a power supply storage box 23 equipped with a switch mechanism 22 for storing a storage battery 21, and an electric heater 24 carried by the power supply storage box 23 and dedicated to the backyard of the cooking food insulation container IO.

The reason why the storage battery 21 is used as a power source for the electric heater 24 is that a power cord is not required.

If the food warming container 10 placed on the table has a power cord, it not only spoils the appearance and the atmosphere of the party, but also causes problems.
Get tangled or caught in your leg.

This is because there is a danger that the dishes arranged on the table topple over or the customers fall over.

The present invention aims to solve such problems.

A storage battery 21 was used as a power source.

Although the storage battery 21 may be a secondary battery, it is best from an economic point of view to use a rechargeable secondary battery.

Note that the voltage of the storage battery 21 used varies depending on the electric heater 24, but 12V is sufficient for the time being.

Referring to FIG. 2, the structure of the electric heater 24 will be explained.

The electric heater 24 includes an electric heating base 26 on which a heating wire 25 is disposed, and an electric heating base 26 that extends vertically from above the surface of the electric heating base fi2B through approximately the center of the electric heating base 92B and is fixed integrally with the electric heating base 26. With axis 27.

A shaft hole 2 into which the lower part of the shaft 27 is slidably inserted in the axial direction.
8 and covers the electric heating base 26 from the bottom side to the side thereof, and a spring 30 interposed between the case body 29 and the electric heating base 9126.

The case body 29 of the embodiment is shaped like a deep bowl, and the electric heating base g126, which is formed in the shape of a disc like a flat lid dropped into the bowl, can move up and down while remaining horizontal. It is included.

On the surface of this electric heating board 26, there are 1 heating wires 2 as a heat generation source.
As 5, for example, a nichrome wire is disposed.

The shaft 27 is located at the center of the electric heating base 26.
For example, 1 is protruded from the front and back of 6.

Like the shaft of a spinning top, it is passed through with the lower end protruding longer than the upper end.

The reason why the upper end side of the shaft 27 is projected upward from the surface of the electric heating base 26 into the dish is that the upper end side of the shaft 27 is directly connected to the surface of the electric heating base 26, and therefore, the heating wire 25 disposed on the surface of the food warming container 10. This is to prevent the bottom of the outer container 12 from hitting it.

This prevents danger, and also avoids uneven temperature distribution due to partial heating, and makes it possible to homogenize the temperature distribution of heat generation in the upper region of the electric heating board 26.

The lower part of the shaft 27 is inserted into a shaft hole 28 bored in the bottom of the case body 29 so as to be able to slide vertically, and the shaft 27 is kept vertical by this vertically bored shaft hole 28. There is.

In the embodiment, a holder 31 having an auxiliary shaft hole 28A similar to the shaft hole 28 is provided at the bottom of the case body 29 outside of the shaft hole 28 to more reliably hold the shaft 27.

This shaft 27 is fixed to the electric heating base 26, and as described later, moves integrally with the vertical movement of the shaft 27 in the axial direction.

Furthermore, a spring 30 is interposed between the above-mentioned holder 31 and the electric heating base 26 located above it to urge the electric heating base 26 upward. The spring 30 is interposed on the shaft 27, and the lower part of the spring 30 is fitted into a holder 31 in a holder 31, which is fitted into a spring holder 32.

Note that instead of the springs 30 being interposed on the shaft 27 as in the embodiment, for example, a plurality of springs 30 may be arranged around the shaft 27 at equal intervals (not shown).

In the case body 29 provided with a holder 31 as in this embodiment, the spring 30 is arranged and fixed on the upper surface of the holder 31 (not shown).

In this way, by interposing the spring 30, the electric heating base 26 is always in an upwardly floating state S4.

Non-use state 1 where the electric heating base 26 is pushed up elastically by the elastic force of the spring 30! At i (not shown), the upper end of the shaft 27 fixed to the electric heating base 26 is set to protrude slightly upward from the mouth edge 29A of the case body 29.

When in use as shown in FIG. This is to form a constant space 33 between the base plate 12 and the bottom surface of the base plate 12 .

This space 33 is surrounded by the bottom surface of the outer case 12 at the top, the electric heating base 26 at the bottom, and the case body 29, and is a generally closed space. The space 33 thus formed does not need to be completely airtight.

By configuring the space 33 to be loosely closed, the heat from the heating wire 25, which is the heat source, is transmitted through the air confined in the space 33. This prevents heat from escaping, improves thermal efficiency, and homogenizes heat distribution within the range of the electric heating board 26.

In order to prevent heat from escaping from the space 33, in the embodiment, the opening edge 29A of the case body 29 is made of an elastic member such as heat-resistant rubber or synthetic resin.

With this, the outer case 12 and the case body 29 are in close contact, and the bottom of the outer case 12 is not damaged.

The electric heater 24 configured as described above is integrally attached to the power supply storage box 20 via the support arm 34.

The support arm 34 may be made of a rigid material, but is preferably made of a flexible material such as a leaf spring.

Efficiently supports (uses) food heating containers 10 with different distances between the surface of the mounting table (16) and the bottom of the outer container 12.
This is because it can be done.

In the embodiment, as shown in FIG.
．． It is carried by 34.

The power source storage box 20 may be any type of container as long as it can store the storage battery 21 as described above.

This power supply storage box 20 incorporates a power supply switch 22, a power supply circuit board from a storage battery 21 serving as a power source to the electric heaters 24 and 24, and electrical components necessary therefor (not shown).

In the above embodiment, the heating wire 25 is used as the heat source of the electric heater.
is used, but a ceramic heater or the like may also be used.

(Effects of the Invention) The present invention does not involve a power cord like Ugegami - Since it uses a storage battery as a power source and uses an electric heater as a heating element, it can be used with candles, alcohol lamps, solid fuels, etc. Compared to the case of using an open flame, there is no need for wiring work, it can be distributed on any tabletop, it is easy to handle, and it is highly safe.

In addition, open flames produce unhealthy gases and soot due to incomplete combustion, but since the present invention uses an electric heater, these problems do not occur at all, and food heating containers and dishes do not produce soot or other harmful substances. There is no risk of it being contaminated.

Furthermore, in the electric heater, the electric heating base on which the heating wire is arranged can be moved up and down by a spring, and the shaft protruding from the surface of the electric heating base prevents the electric heating base from directly hitting the back side of the food warming container. Since the structure is such that a constant interval is always maintained, heat can be distributed and transmitted evenly, and fatigue caused by heat applied to the outer container of the food warming container can be significantly reduced.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, with FIG. 1 being a front view and FIG. 2 being a partially enlarged view. lO... Cooking food thermal container 11... Medium container 12...
Outer container 13...lid 14...legs
15...Gap 16...Shelf section (storage stand)

Claims (1)

[Scope of Claims] 1. In a heating device for a food insulation container in which hot water as a heat retention medium is filled between a middle container in which food is served and an outer container surrounding the middle container, the heating device includes: The heating device is characterized by consisting of a storage battery as a power source, a power storage box equipped with a switch mechanism for storing the storage battery, and an electric heater carried by the power storage box and dedicated to the back side of the food warming container. Heating device for food insulating containers. 2. In a heating device for a food insulating container in which hot water is filled as a heat retention medium between a middle container in which food is served and an outer container that encloses the middle container, the heating device is used as a power source. It consists of a storage battery, a power storage box equipped with a switch mechanism for storing the storage battery, and an electric heater carried by the power storage box and dedicated to the back side of the food warming container. An electric heating base installed in
It has a shaft that extends vertically from above the surface of the electric heating base through approximately the center of the electric heating base and is fixed integrally with the electric heating base, and a shaft hole through which the lower part of the shaft is slidably inserted in the axial direction. It consists of a case body that covers the electric heating base from the bottom side of the base to the sides, and a spring interposed between the case body and the electric heating base.
A heating device for a food insulating container, characterized in that the surface of the electric heating base is configured so that a constant distance from the back surface of the food insulating container is always maintained.