JPH0242222Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention uses a heater to heat a water storage section provided in a part of a container that stores objects to be kept warm to evaporate the water in the water storage section. , relates to a heat-retaining basket that heats and humidifies objects to be heat-retained within the container.

[Conventional technology]

(A) As shown by the chain line in Fig. 2, this type of thermal basket has an inner container a.
A water storage part b is formed at the bottom, an object to be kept warm is placed above the water storage part b via a steaming plate c having a large number of ventilation holes, and the water storage part b is heated by a heater d provided below the water storage part b. A device is known that is configured to heat water and generate steam to keep the object warm.

(B) As shown in Utility Model Publication No. 54-17491, a steam generator with a water storage tank at the bottom,
The steamer is equipped with a lid having a steaming chamber through a perforated plate in the upper part, and a cylindrical glass fiber cloth is installed inside the outer case of the steam generator, and the glass fiber cloth and the outer case are connected to each other. A heater is placed in the upper part of the gap, and by heating the upper part of the glass fiber cloth that has been sucked up by capillary action, the water in the water tank is evaporated, and the water vapor passes through the perforated plate into the storage chamber. It is known that the contents are steamed by steaming the contents.

[The problem that the idea aims to solve]

However, according to the above conventional example (A), (a) After heating and humidification, steam concentrates on the lower side of the object that contacts the steaming plate c, causing this area to become excessively heated. This results in humidification, and in particular, in the case of items to be kept warm, such as bread, it becomes extremely sticky and the quality of the taste and the like is extremely reduced.

(b) In addition, if heating is performed in an anhydrous state due to insufficient water in water storage part b or heating time is too long, the object to be kept warm may be too close to the heater d arrangement part. Therefore, due to conduction or radiation, the heat from heater d directly reaches the lower part of the object to be kept warm, and this area becomes excessively dry, resulting in dryness in the case of foods that require a certain degree of humidification, such as bread. There were some inconveniences such as a decrease in quality such as taste.

According to the conventional example (B), (c) the steam generator utilizes the capillary action of the glass fiber cloth installed in the outer case to heat the water sucked up to the top of the glass fiber cloth with a heater. Since steam is generated by steaming the contents in the steaming chamber above it, it is not possible to steam or heat the contents within the glass fiber cloth.

(d) The glass fiber cloth has a cylindrical shape suspended from the heating chamber to the bottom of the water tank below, and no closed space is formed between the glass fiber cloth and the outer case; Heat from the heater escaped to the upper perforated plate side, making it impossible to efficiently heat the heating chamber.

This invention attempts to solve all of the problems (a) to (d) of the above conventional example.

[Means to solve the problem]

In order to solve the above problems, this invention forms a closed space with a dish-shaped inner container and an outer case surrounding the inner container, and a shoulder part of the inner container in this closed space is provided with a shoulder part of the inner container that corresponds to the shoulder part of the inner container. In addition to providing a heater in contact with the inner container, a water storage portion consisting of a concave groove is provided in the flange portion of the shoulder portion of the inner container or the upper side wall portion in proximity to the heater.

The water storage portion can also be detachably attached to the flange portion of the shoulder portion of the inner container or the upper side wall portion.

The water storage portion may also be configured to support the legs of the lid at its bottom.

[Effect]

The heater is installed in contact with the shoulder of the inner container in the closed space, so when the heater is energized, the heat is distributed throughout the inner container without escaping to the outside of the closed space. As a result of heat conduction and radiant heat acting within the closed space, the objects to be kept warm inside the inner container are uniformly heated and kept warm.

Since the water storage portion is provided in the shoulder portion of the inner container in close proximity to the heater, the water in the water storage portion is efficiently and uniformly evaporated.

[First Embodiment] A first embodiment of this invention will be described below with reference to FIGS. 1 to 3.

FIGS. 2 and 3 are a front view and a side view, partially cut away, of the thermal basket of this embodiment. An inner container 3 is attached as a heat-retaining object container for accommodating heat-retaining foods such as the following, and a closed space S is formed by the outer case 2 and the inner container 3.

The inner container 3 has a dish shape that opens upward, and includes a side wall portion 3a and a flange portion 3b extending approximately horizontally from the upper end of the side wall portion 3a to the inner container shoulder portion A toward the upper end of the outer case 2. It's summery. The flange portion 3b is mounted on the upper end portion of the outer case 2, and the peripheral portion thereof is fixed by winding, crimping, or the like. As shown in FIG. 1, the flange portion 3b is integrally formed with an annular groove-shaped water storage portion 4 over the entire circumference. At the inner bottom of the water storage portion 4, a leg portion 5a is formed around the entire lower end of a lid 5 that closes the upper opening of the inner container 3.
is supported.

In the gap between the water storage part 4 forming part and the side wall part 3a on the lower surface side of the flange part 3b of the inner container 3, there is a gap that contacts the shoulder part A of the inner container and along the entire circumference of the water storage part 4. A heater 6 is provided around the periphery, and the water 7 stored in the water storage section 4 is heated by the heater 6 .

A handle 8 is fixed to the outer surface of the side wall of the outer case 2 for convenience of carrying, and a hanging handle 9 is rotatably pivoted. Further, on the lower surface of the outer case 2, there is a power cord 10 for supplying power to the heater 6, and a cord storage tool 11 for wrapping and holding the power cord 10 when stored.
and is provided. Although not shown, a switch, a heating prevention mechanism, a timer, and other circuit components are appropriately interposed between the power cord 10 and the heater 6.

When a thermal food such as bread is stored in the inner container 3, an appropriate amount of water 7 is stored in the water storage section 4, the opening of the inner container 3 is closed with the lid 5, and the heater 6 is energized.
The heater 6 heats the water 7 in the water storage section 4 to generate steam. This steam diffuses throughout the space from above the storage space surrounded by the lid 5 and the inner container 3.
As a result, the object to be kept warm is evenly heated and humidified. Since the water storage part 4 is located away from the wooden board 12, steam is not locally concentrated and supplied to the object to be heated, and over-humidification phenomenon such as sticky parts does not occur.

On the other hand, if the amount of water 7 stored in the water storage section 4 is small or the heating time of the heater 6 is set too long, a situation may occur where the water storage section 4 is heated by the heater 6 while it is in an anhydrous state. If heater 6
The heat is transferred from the flange 3b of the inner container 3 to the side wall 3.
a, it reaches the bottom of the object to be kept warm for the first time due to conduction following the path of the bottom 3c, and the heater 6
Since there is a considerable distance between them for heat to reach the object to be kept warm by radiation, the object to be kept warm will not locally become overheated. The overdrying phenomenon that causes dryness is reliably avoided.

In this embodiment, since the leg portion 5a of the lid 5 is supported by the inner bottom of the water storage portion 4, the accommodation space surrounded by the lid 5 and the inner container 3 is connected to the water 7 of the water storage portion 4. The so-called water
The sealing action creates an airtight partition from the outside, allowing the generated steam to be effectively used for heating and humidifying objects to be kept warm without escaping to the outside.

In addition, in this embodiment, as shown in FIGS. 2 and 3, a wooden board 12 is placed on the bottom of the inner container 3, and the object to be kept warm is placed through this wooden board 12, so that the lid body 5 The system is designed to prevent condensation on the inner wall of the inner container 3 from flowing to the bottom of the inner container 3 and dampening the lower part of the object to be kept warm. The plate 12 may be omitted.

[Second example] FIG. 4 shows a second embodiment of this invention.

In the thermal insulation basket of this embodiment, the annular groove-shaped water storage portion 14 is integrally formed with the flange portion 13b of the inner container 13 as in the previous embodiment, but the depth dimension H of the water storage portion 14 is first set. Although the width W of the water storage section 14 is set to be sufficiently long compared to the case of the above embodiment, the width W of the water storage section 14 is kept short to ensure a sufficient amount of water storage. The main difference is that it is placed in the

The fact that the width dimension W of the water storage portion 14 is kept short by the former configuration means that the side wall portion 13a of the inner container 13 approaches the outer case 2 accordingly, that is, the substantial volume of the inner container 13 increases. However, it has the advantage of increasing storage efficiency without increasing the overall size. Also, due to the latter configuration,
The width of the flange portion 13b of the inner container 13 can be configured to be further narrowed only at the portion where the heater 16 is disposed.

Further, the leg portion 15a of the lid body 15 is configured to be supported by the non-water storage portion of the flange portion 13b of the inner container 13, unlike the previous embodiment, but it is supported by the bottom portion of the water storage portion 14 as in the previous embodiment, so that the water can be stored. - It may be provided with a sealing function.

The other configurations are the same as those in the previous embodiment, and the heating and humidifying effects are also substantially the same.

[Third example] FIG. 5 shows a third embodiment of this invention.

In the heat insulation basket of this embodiment, the first and second water storage portions serve as water storage portions for storing water 7 used for steam generation.
Instead of integrally forming the water storage part in a part of the shoulder part A of the inner container as in the embodiment, a groove-shaped annular water container separate from the inner container 23 is used as the water storage part 24, and the water storage part 2
4 is detachably attached to the flange portion 23b of the inner container 23, and the heater 26 is fixed to the flange portion 23b directly below the water storage portion 24 attachment position.

With this configuration, only the single water storage section 24 can be removed from the inner container 23 and water 7 can be added thereto, making it easy to handle and clean. Further, since there is no need to integrally form the water storage portion of the inner container 23, its processing becomes easy.

23a is a side wall portion of the inner container 23, and the same reference numerals as in FIG. 1 indicate the same structure.

[Fourth example] FIG. 6 shows a fourth embodiment of this invention.

Unlike the above-mentioned embodiments in which the water storage portion is provided in the flange portion of the inner container, the heat insulation basket of this embodiment has a separate annular recess extending from the upper end of the side wall portion 33a of the inner container 33 toward the inner side of the inner container 33. A water reservoir 34 consisting of a groove is removably suspended, and a heater 36 is fixed to the side wall 33a of the inner container 33 at a position corresponding to the water reservoir 34, and the same reference numerals as in FIG. 1 indicate the same structure. This shows that.

With this configuration, a water storage part is not located in the flange part 33b of the inner container 33, and the width dimension of the flange part 33b is further shortened, and the actual volume of the inner container 33 is expanded accordingly, which improves the storage efficiency. increases.

In addition, since the water storage section 34 consisting of a water container is detachable, the work of storing water, cleaning and other handling becomes easier, and the processing of the inner container 33 becomes easier, etc. in the case of the third embodiment. It is similar to

In addition, the water storage parts 4, 14, 24, 34 of each example
Although it is provided in an annular shape, it may be provided in a semi-annular shape, partially or intermittently at regular intervals, and its shape can be changed in design as appropriate.

Furthermore, the heaters 6, 16, 26, and 36 are not limited to those shown in the drawings, and their shapes, mounting positions, and the like may be arbitrary.

[Effect of idea]

According to this invention, (1) the heater is mounted on the shoulder of the inner container in a closed space formed by a dish-shaped inner container and an outer case surrounding the inner container;
Since the heater is placed in contact with the shoulder of the inner container, the heat from the heater does not escape to the outside due to the closed space, and the heat conduction from the part of the inner container that the heater is in contact with prevents the heat from the heater from escaping outside. The heat is uniformly transmitted to the entire container, and the entire inner container is heated by the accompanying radiant heat in the closed space, so the object to be kept warm in the inner container is uniformly heated and kept warm.

(2) Since the water storage portion is provided in the form of a concave groove in the flange portion of the shoulder portion of the inner container or the upper side wall portion and is provided close to the heater, the water in the water storage portion can be efficiently and uniformly evaporated. .

Therefore, the steam generated from the water storage section when heated by the heater is not concentrated at the bottom of the object to be kept warm, but is evenly supplied, and even when the water storage section is heated in an anhydrous state, the heat from the heater is directly distributed. It does not concentrate locally on the lower part of the object to be kept warm, and ensures that the disadvantages of conventional example (A), such as excessive heating and humidification and deterioration of the taste and quality of the object to be kept warm, are avoided. It can be prevented.

(3) If the water storage part is configured to support the legs of the lid body at its bottom, as described above, only the single water storage part can be removed from the inner container and water can be added, making it easy to handle. This makes cleaning easier. Further, since there is no need to integrally form the water storage part in the inner container, its processing becomes easy.

[Brief explanation of the drawing]

The figures all show embodiments of this invention; Fig. 1 is a vertical sectional view of main parts in Fig. 2 showing the first embodiment; Fig. 2 is a front view of the whole with a part cut away; 3 is a partially cutaway side view of FIG. 2, FIG. 4 is a longitudinal cross-sectional view of the main part of the second embodiment, FIG. 5 is a longitudinal cross-sectional view of the main part of the third embodiment, and FIG. The figure is a vertical sectional view of the main part of the fourth embodiment. 2... Outer case, 3, 13, 23, 33... Inner container, 4, 14, 24, 34... Water storage section, 6, 1
6, 26, 36...Heater, S...Closed space, A...Inner container shoulder.

Claims (1)

[Claims for Utility Model Registration] (1) A closed space is formed by a dish-shaped inner container and an outer case surrounding the inner container, and a shoulder of the inner container of this closed space is in contact with the shoulder of the inner container. 1. A heat-retaining basket characterized in that a water storage portion comprising a concave groove is provided in the flange portion of the shoulder portion of the inner container or the upper side wall portion in proximity to the heater. (2) The heat-insulating basket according to claim 1, wherein the water storage portion is separate and removable from the flange portion of the shoulder portion of the inner container or the upper side wall portion. (3) The heat-retaining basket according to claim 1 or 2, wherein the water storage section is configured to support the legs of the lid at its bottom.