JPS6226036Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a metal vacuum double pot as a heat insulating container.

It is preferable that the vacuum double pot has a double wall structure in which a vacuum insulation space is formed inside the entire circumferential wall, but it is necessary to boil the content liquid once or to raise the temperature as an auxiliary for heat retention. Trying to heat it is extremely inefficient. Therefore, the present applicants have previously proposed an electric pot in which a vacuum double container is made of metal and has a single bottom, and the container can be efficiently heated from the outside of the single bottom. However, even if the impact resistance and heating efficiency of the liquid content are satisfactory, the heat retention function is deteriorated due to heat radiation from the metal single bottom portion to the outside, and it is still not fully satisfactory.

This idea combines a main body with a single bottom that is advantageous for heating with an external heat source such as an attached heater or a variety of ordinary gas stoves, and an insulating bottom that covers the single bottom of the main body to provide heat insulation. The object of the present invention is to provide a metal vacuum double container that also satisfies insulation performance.

To explain the embodiment shown in FIGS. 1 and 2, 1 is a main body, and inner containers 2 and 3 made of stainless steel form a vacuum insulation space 5 inside the portion except for the single bottom portion 4. A liquid supply port 6 is formed in a double wall structure and opens upward at the upper end.
and a liquid injection port 7 projecting to one side. Seam 8 forming vacuum insulation space 5 between inner and outer containers 2 and 3
They may be joined by a known suitable joining means such as brazing, and the vacuum heat insulating space 5 can be formed by joining the seams 8 in a vacuum space.

In some cases, after joining the seam 8 in the atmosphere, a chip (not shown) provided in a portion may be used to connect the space 5.
The air inside the chip may be suctioned out to achieve a predetermined degree of vacuum, and the chip may be closed by melting, or filled with filler material such as a filler metal or other filler. All you need to do is provide a chip.

The single bottom portion 4 is integrally formed with the inner container 2 so as to have a small diameter forming a downward stepped portion 9 with respect to the heat insulating space 5 forming portion of the main body 1 . Reference numeral 10 is a heat insulating bottom that covers the single bottom part 4, and a vacuum heat insulating space 13 is formed between the stainless steel inner and outer walls 11 and 12 in the same way as the main body 1, and a single bottom receiving recess that receives and covers the single bottom part 4 of the main body 1. 14, and is formed to have the same diameter as the inner container 2 which also serves as the exterior body of the main body 1.

Reference numeral 15 denotes a heat insulating lid that is detachably attached to the liquid inlet 6 of the main body, and like the heat insulating bottom 10, a vacuum heat insulating space 18 is formed between the inner and outer walls 16 and 17 made of stainless steel, and a metal knob 19 is provided at the center of the top surface. It is installed by soldering, etc. Metal fittings 20 and 21 are attached before and after the liquid supply port 6 at the upper end of the main body 1 by spot welding or brazing, and each end of the handle 22 is pivotally attached 23 to the metal fittings 20 and 21.

The main body 1 is formed into a kettle type as shown in the figure together with a heat insulating bottom 10, and has a single bottom part 4 as shown in FIG.
It can be used and handled not only in the state in which it is fitted into the recess 14 of the heat insulating sole 10, but also in the state shown in FIG. When the main body 1 is separated from the heat insulating bottom 10, the single bottom part 4 is exposed, and when heated by placing it on the stove 24 as shown in FIG. The content liquid can be efficiently heated through the bottom part 4 and brought to a boil in a short time. When the contents boil, the main body 1
When removed from the top of the stove 24 and its single bottom part 4 is fitted into the recess 14 of the heat insulating bottom 10 as shown in Figure 1, the boiling contents are absorbed between the double wall made of stainless steel with poor thermal conductivity and the double wall made of stainless steel with poor thermal conductivity. Vacuum insulation space between walls 5,
13 and 18. Therefore, heat radiation to the outside from the single bottom portion 4, which improves heating performance, is sufficiently suppressed, and heat retention is improved, and the heat insulating bottom 10 also functions as a heat insulating tray for the main body 1 immediately after heating. In addition, the insulating lid 15 also has the liquid supply port 6.
This improves heat retention by suppressing heat radiation from the inside to the outside.

For further heat retention, a heat insulating cap, lid, or stopper may also be provided on the liquid inlet 7 so as to be detachable by screwing or elastic fitting.

Then, a communication hole 25 as shown in FIG.
can be provided as necessary.

FIG. 4 shows the main body 1 formed into a thermos flask type with a liquid dispensing pump 31.
A shoulder portion 33 having a wide liquid supply port 32 is provided at the upper end, a lid body 34 covering the shoulder portion 33 is provided with a pivot 35 on one side so as to be freely openable and closable, and a pump 31 is installed within the lid body 34. On the other hand, the liquid supply port 32 has an air supply path 3 that guides the supply air from the pump 31 into the main body 1.
6, and a plug 38 having a discharge portion 37 which guides the liquid inside which is pressurized by the air supplied from the pump 31 and is about to be pushed out to the outside, is detachably attached. The outlet portion 37 has a downward spout 4 having an air vent pipe 39 for preventing splashing on the ceiling at the tip of an overhanging portion 37a extending from the stopper 38 to the side of the main body 1.
0 is provided, and the spout 40 faces downward from the bottom opening 41 of the beak-like protrusion 33a that protrudes to one side of the shoulder 33.

42 is a manual pressing operation plate 43 for the pump 31
is a lock lever 44 that keeps the lid body 34 closed;
is the handle. The plug body 38 has a stainless steel heat insulating collar 38a that seats on the liquid supply port 32,
The inside of the collar 38a is a vacuum insulation space 38b.

In this embodiment as well, by separating the main body 1 from the heat insulating bottom 10, the single bottom portion 4 is exposed;
Content liquid can be heated efficiently.

When lifting the main unit 1 in the heat-retaining state,
In order to be able to handle 0 as well, the insulation sole 1
0 to the main body 1 may be provided, but it must be done to the extent that it does not impair the ease of separating the main body 1 from the heat insulating bottom 10, and depending on the engagement distance with the chiyotsu. Helicoid protrusions and engaging portions that can be engaged and disengaged with elastic engagement or small relative rotation are suitable.

In the embodiment shown in FIG. 5, a heater 51 for heating the single bottom portion 4 of the main body 1 and temperature-sensitive control elements such as a thermostat 52 are provided in the single bottom receiving recess 14 of the heat insulating bottom 10. If the main body 1 is separated from the heat insulating bottom 10 while having a heat source for heating the liquid inside, there will be no electrical appliances at all, making it completely washable. The heater 51 is buried in the heating plate 53,
The hot platen 5 is attached to the metal fitting 54 spot welded into the recess 14.
3 is fixed with screws 55. thermostat 52
is also attached to the metal fitting 54, senses the temperature of the heating plate 53, controls the heater 51 on and off, heats the liquid content to a set temperature, and maintains that temperature thereafter. 56
is a power cord connection port and has a magnetic plug type terminal 56a. 57 is a side handle.

FIG. 6 shows that a heater 51, a thermostat 52, a temperature fuse 58, etc. are attached to the outer surface of the single bottom part 4, and the main body 1 and the heat insulating bottom 10 have flanges 59, 60 formed on the outer periphery of their butt ends.
A pair of fastening rings 62 and 63 that are screwed together 61
They are sandwiched together and joined together. Fastening ring 62,6
3 are anti-rotation projections 64 and 65 that engage with each other at the threaded end points of the flanges 59 and 60;
This prevents the installation of the heat insulating sole 10 from becoming unintentionally loosened. To repair the electrical parts, it is sufficient to unscrew the fastening rings 62 and 63 and remove the heat insulating bottom 10. 66 is a dowel fitting part for positioning the main body 1 and the heat insulating bottom 10.

In FIG. 7, the heater 51 and temperature-sensitive control element are attached to the outer surface of the single bottom portion 4 of the main body 1, as in FIG.
Terminal 56a of the power connection port 56 provided in the heat insulating bottom 10
and the electrical components on the main body 1 side.
and electrodes 68, 69 and brush contact pieces 70, 71 that come into sliding contact during relative rotation when attaching and detaching the heat insulating sole 10.
This is done in such a way that the rotational attachment and detachment of the heat insulating sole 10 has no effect on electrical connections.

Reference numeral 72 is an electrode attachment fitting that is attached to the heat insulating bottom 10, and 73 is a brush contact attachment attachment that is attached to the single bottom portion 4 of the main body by spot welding. 74,75
is an insulating member.

According to this invention, it is a vacuum double pot made of metal with excellent impact resistance, and has a single bottom part on the main body with a vacuum insulation space between the inner and outer containers, and the inside of the wall of the single bottom part is a vacuum insulation space. Since it is covered with a container-shaped insulating bottom, external heating to boil the contents and raise the temperature to maintain a constant temperature can be efficiently performed through the single bottom of the main body, and it is also possible to heat the contents from the single bottom to the outside. Heat radiation can be suppressed by a heat insulating bottom. Therefore, it satisfies the contradictory functions of heating and heat retention of the liquid content.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal sectional view of one embodiment, Fig. 2 is a partial sectional view showing the heating state of the liquid inside, Fig. 3 is a partial sectional view of a modified example, and Fig. 4 is a longitudinal sectional view of another embodiment. Figure, 5th
6 and 7 are partial cross-sectional views of other embodiments, respectively. 1...Body, 2...Inner container, 3...Outer container, 4
...Single bottom, 5,13...Vacuum insulation space, 6...
...Liquid inlet, 7...Liquid inlet, 10...Insulated bottom, 1
1, 12...Internal and external walls, 14...Single bottom receiving recess, 15...Insulating lid, 31...Pump, 32...
Liquid supply port, 34... Lid body, 36... Air supply path, 37...
... Outlet channel, 38 ... Stopper, 40 ... Spout, 51
...Heater, 52...Thermostat, 53...
...Heat plate, 58...Temperature fuse, 62, 63...
Fastening ring, 67...screwed.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A main body with a vacuum insulated space between an inner container and an outer container made of a metal with low thermal conductivity such as stainless steel, and a non-insulated single bottom; A metal vacuum double pot that has the shape of an overlapping container and has an insulated bottom with a vacuum insulated space inside the wall. (2) The metal vacuum double pot according to claim 1, wherein the main body and the heat insulating bottom are detachably combined. (3) The metal vacuum double pot described in claim 1, which is an electric pot having a heater and a temperature-sensitive control element attached to the outer surface of the single bottom of the main body. (4) The metal vacuum double pot according to claim 1, which is an electric pot provided with a heater and a heat-sensitive control element in the single-bottom receiving recess of the heat-insulating bottom. (5) The metal vacuum double pot according to any one of claims 1 to 4 of the claims for utility model registration, wherein the outer container also serves as the exterior of the main body. (6) The main body is made of metal according to any one of claims 1 to 5 of the utility model registration claims, having a liquid supply port that opens upward at the upper end and a liquid injection port that projects to one side. Vacuum double pot. (7) The main body has a pump means for dispensing the liquid content. Claims 1 to 5 of the utility model registration claim
The metal vacuum double pot described in any of the preceding paragraphs.