JPS5924264Y2 - Electric thermal insulation container using vacuum double bottle - Google Patents

Description

[Detailed description of the invention] This invention relates to an electric heat-insulating container using a vacuum double bottle.

Vacuum double bottles were originally used to keep items that needed to be kept warm, but although the bottles had an excellent insulation effect, the initial temperature of the items to be kept warm gradually decreased over time. .

For this reason, electric heat-insulating containers have been developed that increase heat retention by filling the hollow container body and the hollow container lid with heat-insulating material, and have built-in heaters at key points to control these to maintain a predetermined temperature. This type of method has been proposed and is now mainstream.

However, while the conventional electric heat-insulating container has a sufficient heat-retaining function through forced heating to maintain the constant temperature, when kept warm for a long time, the surface layer of the rice gradually becomes dry and dry. In addition, the proper water balance is disrupted, which sometimes leads to deterioration of the quality of the rice, resulting in a loss of taste.

These defects are caused by the forced heating and progress from the surface layer of the rice, which is most susceptible to the forced heating and where moisture is easily taken away, and the problem progresses as the amount of rice decreases. is fast.

For this reason, it cannot be fully satisfied when the target is a heat-retaining object that should maintain a delicate initial state of deliciousness.

This idea focuses on the fact that the vacuum double-bottle type has a much better insulation effect than the insulation material-filled type, and uses a combination of the vacuum double-bottle and a heater to prevent the need for heating. It is an object of the present invention to provide a heat insulating container with a simple structure that requires only a small degree of forced heating, can maintain sufficient heat without the above-mentioned drawbacks, and can save power.

To explain the embodiment shown in FIGS. 1 and 2,
Reference numeral 1 denotes a container body, in which a vacuum double bottle 3 is provided inside an outer case 2.

A heater 5 is embedded in a shoulder backing 4 interposed and sandwiched between the mouth 3a of this vacuum double bottle 3 and the upper end shoulder 2a of the outer case 2 against which the mouth 3a is pressed. 2
a contacts the exposed portion of the heater 5 on the upper surface of the eyebrow backing 4 and also contacts the metal inner container 6 housed in the container body 1 to conduct heat from the heater 5 to the metal inner container 6. It should also serve as the metal heat conductive member 7.

The shoulder portion 2a, which also serves as the heat conductive member 7, is connected 8 to the body portion 2b of the outer case 2, covers the upper surface of the shoulder backing 4, comes into contact with the heater 5, and has the mouth edge of the inner container 6 facing outward. Receiving the flange 6a, the middle container 6 and the flange 6a
The parts should be in contact with each other.

The vacuum double bottle 3 is pushed up by interposing an elastic pressing member 10 between the bottom part 2C which is attached to the lower end of the body part 2b of the outer case 2 by force fitting 9 or screwing, etc. The backing 4 is fixed within the exterior case 2 with the backing 4 sandwiched between the shoulder portion 2a and the backing 4.

The vacuum double bottle 3 can be fixed by various known methods, such as pushing up with the upper end of the inner screw screwed into the center of the bottom 2C from below, or pulling it up with a band whose upper end is fixed to the upper part of the outer case. You can do it with

Reference numeral 11 denotes a container lid, and a handle 12 is fixed on the diameter line of the upper surface.One end of the handle 12 is pivoted to one side of the container 1 by a shaft 13 so that it can be opened and closed freely. At the end,
A lock lever 15 is provided which engages a part of the side of the container 1 to lock the lid 11 in the closed state when the container lid 11, which is pivotally connected by the shaft 14, is closed.

15a is a push operation section for unlocking.

The container lid 11 is filled with a heat insulating material 16 and has an inner container lid portion 11 a that protrudes downward to fit into the mouth portion 6 b of the inner container 6 . The heat insulating material 16 prevents the heat inside the inner container 6 from escaping upward.

A moisture absorbing material 17 made of foamed synthetic resin or the like is attached to the lower surface of the inner container lid portion 11 a of the container lid 11 .

Reference numeral 18 denotes a synthetic resin retaining ring for attachment, in which an inner ring 18a and an outer ring 18b are connected at several points by radial connecting portions 18C, which are attached to the lower surface of the inner container lid 11a. Four parts 11 into which the moisture absorbing material 17 is fitted
b It is caught on the inner flange 11C formed on the edge of the mouth and prevents the moisture absorbing material 17 from falling off.

Reference numeral 19 denotes a plug for connecting the heater 5 to a power source, which is provided at the end of the power cord z1 pulled out from the outer case 2 and connected to the terminal pulled out from the skin backing 4 of the heater 5. There is.

Reference numeral 22 denotes a rotary seat plate rotatably mounted on the lower surface of the bottom 2C of the outer case 2, so that when the container body 1 is set in place, the direction of the container body 1 can be changed by turning it lightly while the container body 1 is in the fixed state.

The container body 1 has an excellent heat insulation effect due to the vacuum double bottle 3, and the heat from the heater 5 is conducted to the flange 6a of the inner container 6 via the heat conduction member 7, and the conducted heat is Furthermore, the heat is quickly transmitted to the entire area of the medium container 6, and heats the food to be kept warm inside the medium container 6, such as rice.

The forced heating by the heater 5 is sufficient to maintain the initial temperature by only supplementing the extremely small amount of heat that the rice etc. gradually naturally cools, even though the vacuum double bottle 3 has an excellent heat insulation function. .

Therefore, in addition to saving electricity, since the degree of forced heating is small, there is little effect, and even rice etc. will not become dry and dry on the surface layer, or the moisture balance will be disrupted and the quality will change. It is possible to maintain even delicate initial conditions such as palatability in a satisfactory state.

On the other hand, the moisture absorbing material 17 temporarily absorbs and retains condensed water even if it occurs, prevents it from dripping onto rice, etc. and making it sticky, and also prevents the moisture inside the inner container 6 from becoming sticky. If it becomes insufficient, the absorbed moisture is evaporated together with the heat from the heater 5 to humidify and maintain optimal conditions.

The heater 5 may be installed or bonded to the upper surface of the shoulder backing afterwards.

A part of the heat that the heat conductive member 7 receives from the heater 5 is
Heat is also conducted to the body 2b of the exterior case 2 and radiated to the outside, but since the amount of heat required for the forced heating is small, there is no problem in terms of heat loss or danger due to heat radiation to the outside. do not have.

If heat conduction to the exterior case 2 is a problem, as shown in FIG. Part 2a
It may be held by force fitting 30 or the like.

Further, the heat conductive member 7 does not necessarily need to be held on the shoulder portion 2a, and may be held on the container body 10 together with the shoulder backing 4.

In the embodiment shown in FIG.
Like the one in the figure, it is shaped separately from the shoulder part 2a, and the shoulder backing 4
The shoulder backing 4 is insert-molded so that it is embedded as a core metal, and is held integrally with the shoulder backing 4.

The heater 5 is completely buried in the shoulder backing 4 so as to be in contact with one end of the member 7, and the one end of the member 7 is wound around the hem 7a, so that heat conduction to the member 7 is ensured. As it should be done.

In the embodiment shown in FIG. 5, a metal inner container 6 is provided with a single metal inner lid 40, and is suspended by a hanging pin 41 protruding from the lower surface of the container lid 11 so that it can be attached and removed and can be moved up and down. At the same time, the lid 40 is pressed downwardly by the backing 42 to seal the inner container 6, and the lid 40 is crimped onto the flange 6a of the inner container 6 to receive heat conduction as well, so that it is heated from above as well. It is.

The lid 40 may be in direct contact with the metal heat conductive member 7 together with the inner container 6.

Even in this type of arrangement, it is effective to provide the moisture absorbing material 17 on the lower surface of the lid 40 as shown by the imaginary line.

According to this idea, since heat is kept by the excellent insulation properties of the vacuum double bottle and forced heating, the necessary heating temperature of the heater that performs forced heating is extremely low, making it possible to maintain sufficient heat, which saves electricity. In addition to contributing to energy conservation, forced heating can cause the heated items to become dry and sticky, or cause the moisture balance to be disrupted or deteriorated, resulting in the loss of delicate initial conditions such as deliciousness. It prevents water from getting wet and exhibits excellent heat retention function.

Furthermore, the forcible heating can be carried out by simply conducting heat to the metal inner container via a metal heat conductive member that contacts a heater provided in the eyebrow backing, which has the advantage of being simple in structure and inexpensive.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal sectional view of one embodiment, Fig. 2 is a partially enlarged sectional view, Fig. 3 is a partially enlarged sectional view of a modified example, and Fig. 4 is a partially enlarged sectional view showing another embodiment. , FIG. 5 is a partial sectional view showing another embodiment. 1... Container body, 2... Exterior case, 2a
...Shoulder, 3...Double vacuum bottle, 3a.
...Mouth, 4...Skin backing, 5...
...Heater, 6...Medium metal container, 6a
... Flange, 7 ... Metal heat conductive member, 40 ... Metal inner lid.

Claims (7)

[Scope of utility model registration request] (1) A double vacuum bottle is provided in the outer case to serve as a heat insulator, and the shoulder is sandwiched between the mouth of the vacuum double bottle and the shoulder of the outer case against which the mouth is pressed. A heater is provided on the backing, and a metal heat conductive member is provided at the mouth of the vessel, which contacts the heater and is in contact with the metal inner container housed in the vessel, and the heat from the heater is transferred to the metal heat conductive member. An electric heat-insulating container using a vacuum double bottle, characterized in that conduction is conducted through the metal inner container. (2) The vacuum according to claim 1, wherein the metal inner container is removably fitted, and the outer rim of the container is placed on and comes into contact with the metal heat conductive member. Electric thermal container using double bottles. (3) The metal heat conductive member also serves as the shoulder portion of the upper end of the outer case, and is brought into contact with the exposed portion of the heater embedded in the eyebrow backing on the upper surface of the shoulder backing. An electric heat-insulating container using a vacuum double bottle according to item 1 or 2. (4) A utility model in which the metal heat conductive member is attached to a synthetic resin shoulder member connected to the upper end of the outer case, and is brought into contact with the exposed portion of the heater embedded in the shoulder backing on the upper surface of the shoulder backing. An electric heat-insulating container using a vacuum double bottle according to registered claim 1 or 2. (5) The shoulder backing is formed by inserting the metal heat conductive member so that the contact portion of the metal inner container with the metal inner container is exposed. An electric heat-insulating container using the vacuum double bottle described above. (6) An electric heat-insulating container using a vacuum double bottle according to claim 1, wherein the vacuum double bottle is a wide-mouthed container. (7) A metal inner container is provided with a metal inner lid for sealing it, and the inner lid receives heat conduction directly or indirectly through the metal heat conductive member. An electric heat-insulating container using a vacuum double bottle as set forth in claim 1 of a certain utility model registration claim.