JPH073599Y2 - Heating container - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] This invention makes it possible to easily attach and detach the heating container, and more specifically, when frequently attaching and detaching the lid that opens and closes the opening of the container body. Regarding heating container.

[Conventional technology]

In a heating container, especially a heating container in which it is necessary to always keep the temperature of the contents uniform, it is necessary to heat not only the bottom and body of the container body, but also the upper part. Moreover, in a container having a structure in which the lid can be attached to and detached from the container body in order to take out the contents, it is necessary to devise a heating method for the upper lid.

Conventionally, the following methods have been generally adopted as means for heating the lid of the heating container.

(I) The same heat medium as the heat medium supplied to the bottom and body of the container body is supplied from a separately installed heating device, and when the lid is attached or detached, the pipe connecting the heating medium heating device and the lid is attached or detached. Remove each time.

(II) The lid is heated by an electric heater separately from the bottom and body of the container body.

(III) Heat is applied only from the bottom and body of the container body, without heating the lid, and only heat insulation is applied.

[Problems to be solved by the device]

However, in the above-described conventional heating means, the method (I) involves a work of extracting the heat medium at high temperature when the pipe is attached and detached, and is very dangerous.

In addition, the method (II) is safe because it does not involve the work of extracting the heat medium at a high temperature, but the electric heater heating method has a drawback that the heating temperature is difficult to be uniform. It also has the drawback that it cannot be used in explosion-proof areas.

Further, the method (III) is the simplest, but since the lid is not actively heated, there is a concern that the temperature will drop.

In order to solve the above problems, the present invention aims to provide a heating container that can reliably and evenly heat the lid without danger, temperature unevenness, and temperature drop, and can be easily attached and detached. It is an issue.

[Means for Solving the Problems]

In order to solve the above problems, a first invention is a container in which an opening of a container body is opened and closed by a lid, wherein a lid is provided with a jacket that encloses a gas-liquid two-phase heat medium, and an induction coil is provided. By heating the heat medium by the electromagnetic induction heating mechanism, the vaporized heat medium heats the lid.

Similarly, the second invention adopts a configuration in which the electromagnetic induction heating mechanism is fixed to the container body and only the lid having the jacket can be attached to and detached from the container body.

[Action]

When the electromagnetic coil of the electromagnetic induction heating mechanism is excited by an AC power source, an alternating magnetic flux is generated based on this and a current is induced in the liquid reservoir. Due to this electric current, Joule heat is generated in the wall portion of the liquid reservoir, and the heat medium in the jacket chamber is heated and vaporized by this heat, and the steam flows toward the surrounding portion in the still cold state, Then, it condenses and gives latent heat to that portion to raise the temperature. The transfer of latent heat due to the flow of steam continues as long as there is a temperature difference, so that the temperature of the container lid is always uniform.

〔Example〕

An embodiment of the present invention will be described below with reference to the accompanying drawings.

In the figure, reference numeral 1 denotes a heating container main body, and an opening at an upper part thereof is closed by a lid 3 which is detachable by a bolt 2 or the like.

The container body 1 has a jacket chamber 4 for heating the bottom and the body, and the lid 3 is also provided with a jacket chamber 5 around the outside.

The jacket chamber 5 of the lid 3 is formed by a wall 6 that surrounds the outside of the lid 3, and a liquid reservoir 7 that communicates with the jacket chamber 5 is installed on a part of the lid 3, for example, on the bottom side thereof.

As shown in FIG. 2, the liquid reservoir 7 is formed in a hollow cylindrical shape having a hollow center, and a large number of pores 8 are formed in the thick portion around it to secure a large electric heating area. is doing. The upper end of each pore 8 communicates with the jacket chamber 5. A gas-liquid two-phase heat medium is sealed under reduced pressure in each of the pores 8.

An electromagnetic induction heating mechanism 9 is installed inside the liquid reservoir 7. The electromagnetic induction heating mechanism 9 is mainly composed of an induction coil and an iron core around which the induction coil is wound, for example, a wound iron core.

The jacket chamber 5 of the container body 1 may be heated by an induction heating method like the lid 3, or a heat medium heated by a general separately arranged heat medium heating device may be used.

In the above configuration, when the electromagnetic induction heating mechanism 9 is driven, that is, when the electromagnetic coil is excited by an AC power source, an alternating magnetic flux is generated, which causes the wall of the liquid reservoir 7 or the wall of the jacket chamber 5 and the lid 3. Current is induced in
Joule heat due to the current is generated in each portion. This heat causes each part to generate heat.

On the other hand, the heat generated in the liquid reservoir 7 as described above heats and vaporizes the liquid-phase heat medium in the liquid reservoir 7. The steam generated thereby flows toward the low temperature region of the jacket chamber 5. When you touch the low temperature part, it condenses and returns to a liquid state. At this time, latent heat is released to raise the temperature of the low temperature portion. The condensed heat medium is again in the liquid reservoir 7
Return to. This is repeated below.

By transferring the latent heat of the heat medium, the entire surface of the wall of the lid 3 is uniformly heated, and the temperature of the lid 3 is made uniform. The temperature can be controlled simply by controlling the voltage applied to the electromagnetic coil or its frequency, and the response speed is sufficiently fast.

In this way, the heat medium for heating the lid 3 is the jacket chamber 5
Since it is sealed in and is not connected to other devices, it is possible to perform the work safely and simply without removing the high-temperature heat medium even when the lid 3 is attached or detached.

The electromagnetic induction heating mechanism 9 may be fixed to the inside of the lid, but fixing it to the main body side does not require dragging the lead wire when the lid 3 is attached or detached, and the work is easier.

Also, unlike the electric heater, this method has no risk of an abnormal temperature rise, and can be certified for use in an explosion-proof area if necessary.

〔effect〕

As described above, according to the present invention, the heating medium for heating the lid is enclosed in the jacket chamber and is not connected to other devices such as the container body. The work can be performed safely and simply without the need to extract the

Moreover, unlike the electric heater, the heating of the heat medium by this electromagnetic induction heating mechanism does not cause the temperature to rise abnormally,
If required, it can be certified for use in explosion-proof areas.

[Brief description of drawings]

FIG. 1 is a vertical sectional front view of a heating container according to the present invention, and FIG. 2 is a transverse plan view of the same. 1 ... container body, 3 ... lid, 4, 5 ... jacket room,
7 ... Liquid reservoir, 9 ... Electromagnetic induction heating mechanism.

Claims (2)

[Scope of utility model registration request] 1. A container in which an opening of a container body is opened and closed by a lid, wherein the lid is provided with a jacket enclosing a gas-liquid two-phase heating medium, and the heating medium is heated by an electromagnetic induction heating mechanism equipped with an induction coil. By doing so, the heating container is adapted to heat the lid with the vaporized heat medium. 2. The heating container according to claim 1, wherein:
A heating container in which the electromagnetic induction heating mechanism is fixed to the container body and only the lid with the jacket can be attached to and detached from the container body.