JPS64196Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an electric kettle that can heat water using an electric heating device.

Since thermos bottles are vacuum double bottles, it is difficult to heat them directly. However, recently, stainless steel thermos bottles have been widely used to take advantage of stainless steel's low thermal conductivity. It becomes possible to install a separate water heating tank. Based on this point, the present invention aims to provide a pot that has good water heating efficiency and is easy to manufacture and assemble.

An embodiment of the present invention will be described below in detail with reference to the drawings.
In Fig. 1, reference numeral 1 denotes a vacuum thermos bottle made of stainless steel with a double wall structure installed inside an outer case 2. The upper end is connected to the central hole of a shoulder plate 3 to form a mouth part 4, and the bottom part is connected to the center hole of a shoulder plate 3. It is supported by the upper edge of the central cylindrical body 6. Reference numeral 7 denotes a water boiling tank, and the opening 8 at the center of the tank, which is raised in an annular shape and concave, is provided at the bottom of the thermos flask 1 and is connected by a heat-resistant rubber pipe 10 to a pipe 9 that communicates with the inside of the flask. 11
is a mounting plate that integrally protrudes from around the tank 7, and is screwed onto the bottom of the bottom plate 5. Reference numeral 12 denotes a water level display tube led out from the side of the water boiling tank 7 and connected to the pipe 13, which is provided so as to be visible through the vertically long hole 14 of the outer case 2, and whose upper end opens inward to the mouth 4. The outer end of the pipe 15 is connected to the outer end of the pipe 15. Therefore, the water level display tube 12 is similar to the pipe 13.
and 15, it is connected to and straddles the side wall of the water heating tank 7 and the upper opening of the thermos flask 1. Reference numeral 16 denotes a water supply waterway that is led out from the bottom of the water heating tank 7, extends horizontally, and descends to reach the hot water outlet 17. A is a water supply valve device in which a valve 19 is always in elastic contact with a valve seat 20 by a coil spring 18, and the outer end of a valve shaft 22, which is slidably inserted into a horizontal hole 21, is connected at the elbow by a pin 23. It abuts the inner side of the working end 24a of the L-shaped knob 24 which is pivotally mounted. 2
6 is a water supply stop knob that locks the working end 24a by lateral movement. A band heater 27 is an electric heating device and surrounds the water heating tank 7. 28 is a thermostat for the heater 27, 29 is a heat retaining thermistor, 30 is a protective fuse, and 31 is a power plug. 32 is the bottom plate of the outer case, and 33 is three folding legs attached to the bottom plate. 34 is a lid-type spout that is screwed onto the shoulder plate 3, and has a steam hole 35 in the center that communicates with the inside of the thermos flask 1. 36
is a safety check valve provided at the bottom of the steam hole 35. In this pot, in order to improve water heating efficiency, a pipe 37 for promoting convection is led out from the annular part 7a around the upper part of the water heating tank 7, raised, and introduced into the abdomen of the thermos bottle 1, as shown by the imaginary line. It is better to provide a plurality of these pipes around the thermos bottle 1. Further, the hot water outlet 17 may be opened laterally. As shown in FIG. 3, the electric heating device includes, in addition to the band heater 27 for boiling water, a thermostat 28, a thermistor 29 for keeping warm, and a temperature fuse 30, a neon lamp 31 for indicating the boiling water, a keeping-warm indicator lamp 32, and an electric leakage prevention lamp. This circuit has a circuit breaker 34'.

To use the pot described above, water is poured into the thermos flask 1, the spout 34 is set in the spout 4, and the power plug 31 is connected to the outlet of the pot. In this way, the water in the water boiling tank 7 is heated by the band heater 27, and the water in the thermos flask 1 becomes hot water. During this heating, the neon lamp 31 lights up to indicate that the water is being boiled. When the temperature rises to a certain level, the thermostat 29 turns off and the heater 2
7 stops heating, but the heat retention thermistor 29 is working and the temperature is maintained. During this time, the neon lamp 32 is lit, indicating that the temperature is being kept warm. When the temperature drops, the thermostat 29 is turned on and heating by the heater 27 starts again. When removing hot water, push down the L-shaped knob 24. In this way, the working end 24a pushes the valve shaft 22 inward against the elasticity of the coil spring 18, so the valve 19 moves away from the valve seat 20 and opens, causing hot water in the tank 7 to flow through the water supply channel 16. The hot water is discharged from the hot water outlet 17.
When you release your hand to push down knob 24, coil spring 1
Due to the elasticity of the valve 8, the valve 19 comes into elastic contact with the valve seat 20, and the closing knob 24 is raised. When the stop knob 26 is moved toward the "stop" symbol shown in FIG. 2, the key-shaped piece holds the active end 24a, making it impossible to push down the knob 24 and opening the valve 19.

The present invention is as described above, and since the water boiling tank is connected to the bottom of the thermos via a pipe and an electric heating device is installed in the water boiling tank, the water heating efficiency is high and it can be easily implemented using a stainless steel thermos. It has the advantage of being able to

In particular, according to the present invention, the thermos flask 1 has a double-walled vacuum structure made of stainless steel, and the water boiling tank 7 equipped with the electric heating device 27 is connected directly below the thermos flask 1. By heating the water inside, the water inside the thermos flask 1 can also be heated, and the heated water can be well kept warm inside the thermos flask 1.
Even if the water boils when heating, the thermos bottle 1
Since it is made of stainless steel, it does not suffer from damage such as cracking, unlike conventional glass bottles.
During manufacturing and assembly, vacuum double-walled thermos bottle 1
It is sufficient to manufacture the water boiling tank 7 and the water boiling tank 7 separately and then simply assemble them in a communicating manner, making it easy to manufacture. When installing the water level display tube 12, if the water level display tube 12 is inserted through the double wall of the thermos flask 1, it will be difficult to obtain a vacuum state of the thermos flask 1, whereas the above-mentioned like,
Since the water level display tube 12 is connected to the side wall of the water boiling tank 7 and the upper opening of the thermos flask 1 and is installed across it, there is no need for special processing on the double wall of the thermos flask 1, and the desired result can be achieved. A good heat retention effect can be achieved.

[Brief explanation of the drawing]

FIG. 1 is a side sectional view of one embodiment of the present invention, FIG. 2 is a front view of the same, and FIG. 3 is an electric circuit diagram used in the same. In the diagram A... Water supply valve device, 1... Stainless steel thermos bottle, 2... Shoulder plate, 4... Mouth part, 5... Bottom plate,
7... Water boiling tank, 7a... Annular part of tank,
16... Water supply channel, 17... Hot water outlet, 19...
Valve, 20... Valve seat, 22... Valve shaft, 24... Knob, 26... Water supply stop knob, 27... Band heater, 34... Lid type spout.

Claims (1)

[Scope of utility model registration request] A thermos bottle with a double wall structure made of stainless steel, a water boiling tank connected directly below the thermos bottle and equipped with an electric heating device, a water supply channel led out from the water boiling tank, and a side wall of the water boiling tank and the thermos bottle. 1. A water boiling pot characterized by comprising a water level display tube that communicates with and straddles an upper opening.