JPH0354678Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial application field) This invention forms a vacuum section between the inner container and the outer container,
This invention relates to a metal thermos flask equipped with a heater, which is equipped with a heater at the bottom of the inner container.

(Prior Art) As shown in FIGS. 4 and 5, a conventional metal thermos with a heater creates a vacuum between the inner container 25 and the outer container 25a, and a water boiler heater 27 is installed inside the heater assembly 26 at the bottom of the inner container 25. and thermostat 28
was built in, and the water heater 27 and thermostat 28 were connected in series, with both ends connected to a household voltage plug receiver 29.

(Problem that the invention aims to solve) In this way, in the conventional system, after boiling water and opening the thermostat contacts, the water is only kept warm by the vacuum structure; It has been difficult to obtain hot or boiling water indoors or outdoors for long periods of time, making it difficult to make instant foods and delicious drinks.

(Means for solving the problem) The present invention was made to solve the above problem, and after boiling water with household voltage, it is possible to keep hot water at any time for a long time using a car generator or battery. The objective is to obtain a metal thermos flask with a heater that allows you to drink boiling water. For this purpose, a vacuum section is formed between the inner container and the outer container housed in the main body, a household voltage plug holder and a low voltage plug holder are provided inside the main body, and a heater is provided at the bottom of the inner container. A heater and a thermostat connected in series with this heater are installed in the set.
This thermostat has a function that when the water temperature in the inner container is low, it conducts with the terminal connected to the household voltage plug holder, and when the water temperature in the inner container is high, it conducts with the terminal connected to the low voltage plug holder. It has the following.

(Function) With this configuration, water can be boiled using household voltage and heated and kept warm using low voltage such as a car generator or battery, so hot water heated indoors can be heated outdoors. It is possible to obtain hot or boiling water for a long time even if the water is moved to another location.

(Example) An example of the present invention will be described below with reference to the drawings.

One embodiment is shown in FIGS. 1, 2, and 3. In the figure, 1 is an inner container, and 2 is an outer container that covers the outer periphery of the inner container 1. The inner container 1 and the outer container 2 are made of metal, and a vacuum section is formed in the space between the containers 1 and 2. ing.

3 is a bottom joining member between the inner container 1 and the outer container 2, and a nut 4 is welded to this bottom joining member 3. 5 is a heater assembly held watertightly at the bottom of the inner container 1 by this nut 4, in which a heater 7 is wound around a donut-shaped core mica 6, the top and bottom of which are sandwiched between cover mica 8 and 9, and a cover mica The upper and lower parts of 8 and 9 are sandwiched between cover plates 10 and 11, a metal upper cover 12, and a lower cover 13, and the periphery is rolled up and molded.

At the upper center of the upper cover 12, there is a convex portion 14 in the shape of a covered cylinder.
A thermostat 15 is fixed in the convex portion 14 in contact with the upper surface of the convex portion 14. The thermostat 15 is a common terminal 15
C. It has switching terminals 15A and 15B that open and close, respectively, when the temperature rises, and one end of the heater 7 is connected to one end of a household voltage plug receiver 17 provided at the bottom of the main body 16, and the other end of the heater 7. is connected to the terminal 15C, and the terminal 15A is connected to the other end of the household voltage plug receiver 17. 1
Reference numeral 8 denotes a low voltage plug receptacle for a car generator, battery, etc. provided at the bottom of the main body 16, one end of which is connected to the same end connected to the household voltage plug receptacle 17 of the heater 7, and the other end connected to the thermostat 15. Terminal 15B closes due to temperature rise
It is connected to the. Reference numeral 19 denotes a household voltage cord set, which has a plug 20 connectable to the household voltage plug receptacle 17 at one end, and an insertion plug 21 connectable to a household voltage outlet at the other end. In addition, 22 is a low voltage cord set for car generators, etc., and one end has a low voltage plug holder.
8, and the other end has a C plug 24 that can be connected to a cigarette lighter or the like.

Although not shown in FIGS. 1 and 2, the actual device is more convenient to use if a conventionally known power switch is connected to the circuit of the heater 7.

Next, the operation of this embodiment having the above configuration will be described.

First, fill the inner container 1 with water, etc., and connect the plug 20 of the household voltage cord set 19 to the household voltage plug receiver 1.
7, when the plug 21 of the household voltage cord set 19 is connected to a household outlet, the contacts between the terminals 15C and 15A of the thermostat 15 are closed, and the contacts between the terminals 15C and 15B are open, so the household voltage Only the operating voltage is applied to the heater 7, and water is heated with high power. When the water temperature eventually rises to around 95° C., the thermostat 15 senses the water temperature and operates, opening the contact between the terminals 15C and 15A and closing the contact between the terminals 15C and 15B. Therefore, after the thermostat 15 operates,
By connecting the C plug 24 of the low voltage cord set 22 to a car cigarette lighter and the plug 23 to the low voltage plug receiver 18, low voltage is applied to the heater 7, heating hot water with small electric power. Keep warm at high temperature.

The device of this embodiment is normally used indoors, and if connected to a household power source, the thermostat 15 will keep the water hot at all times. Additionally, when used outdoors, the device can be heated to over 95 degrees Celsius and then connected to a car battery, etc., to heat and keep warm with a small amount of electricity (less than 10 W).

(Effects of the invention) As described above, according to the invention, a single heater can heat water using household voltage and then heat it using low voltage, so hot water can be kept hot for a long time indoors or outdoors. You can obtain boiling water, make instant foods and delicious drinks easily, and expect great results.

[Brief explanation of the drawing]

Figure 1 is a cross-sectional view of a metal thermos flask with a heater according to an embodiment of the present invention, Figure 2 is a circuit diagram of the thermos flask, and Figure 3 is a circuit diagram of the same thermos flask.
The figure is an exploded perspective view for explaining the main structure of the thermos flask, FIG. 4 is a sectional view of a conventional metal thermos flask with a heater, and FIG. 5 is a circuit diagram of the same thermos flask. 1...Inner container, 2...Outer container, 5...Heater set, 7
...Heater, 15...Thermostat, 16...Main body, 17...Plug receiver for household voltage, 18...Plug receiver for low voltage.

Claims (1)

[Scope of utility model registration request] A vacuum section is formed between the inner container 1 and the outer container 2 housed in the main body 16, and a household voltage plug receptacle 17 and a low voltage plug receptacle 18 are provided inside the main body 16. A heater 7 and a thermostat 15 connected in series with the heater 7 are provided in the heater set 5 provided at the bottom of the container 1.
The thermostat 15 is connected to the household voltage plug receiver 17 when the water temperature in the inner container 1 is low, and is connected to the low voltage plug receiver 18 when the water temperature in the inner container 1 is high. A metal thermos flask with a heater.