JPS6336967Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] This invention relates to a hot water pot that heats water stored in a tank to the boiling point and keeps it warm.

[Technical background of the invention and its problems]

In a hot water pot that heats water to the boiling point and keeps it warm, steam leaks out as the water boils, which can be dangerous if this condition continues for a long time.For this reason, the boiling time is about 30 seconds. It is kept to a minimum. The temperature of the water is generally adjusted by controlling the heater with a bimetallic thermostat. As is well known, the temperature at which water boils is 100
The operating temperature of the thermostat is set at 100℃, and it does not rise any higher than this, and the operating temperature of the thermostat is eventually set to 100℃. It is often difficult to heat to 100℃ and bring it to a boil. Furthermore, it is difficult to adjust the boiling time using only a thermostat, and therefore it is necessary to incorporate a relay circuit, a motor timer, etc., which increases costs.

Therefore, since microcomputer parts have recently become relatively inexpensive, devices are being developed that use microcomputer parts to control the boiling of water and adjust the boiling time. An example is shown in FIG. 1, where 1 is a cylindrical case, and a tank 2 is housed within this case 1. The lower end of the tank 2 reaches the lower part of the case 1, and a band-shaped heater 3 is wrapped around the outer periphery of the lower end of the tank 2. An upper lid 4 is rotatably attached to the upper end of the case 1, and an air pump mechanism (not shown) is built into the upper lid 4.
Compressed air can be sent into the tank 2 by pressing through the tank 2. An annular leg 6 is attached to the lower end of the case 1, a bottom cover 7 is attached to the inner opening of the leg 6, and a control circuit mechanism 8 is provided at the center of the upper surface of the bottom cover 7. The circuit mechanism 8 is covered with a support metal fitting 9 that supports the tank 2, and a temperature sensor 10 is attached to the outer periphery of the tank 2. Case 1
An operating section 11 is provided on the lower peripheral surface of the operating section 11, and the operating section 11 is formed by incorporating electronic components 13 such as ICs and various semiconductors into the inner surface of a base 12. Further, on the front surface of the base 12, operation knobs, indicator lamps, and the like (not shown) are provided.

Then, a setting operation for boiling water is performed on the operation unit 11. In response, the water contained in the tank 2 is heated to the boiling point by the heater 3, which is detected by the temperature sensor 10, and based on the detection signal, the control circuit mechanism 8 controls the energization of the heater 3. The boiling time is maintained for 30 seconds, and then the temperature is kept slightly below the boiling point. When the pushing body 5 is pressed in this state, the hot water in the tank 2 is pressurized by the air pump mechanism and is sequentially poured out through the spout 14.

However, in such a configuration, the operation section 1
Since the electronic component 13 of the electronic component 1 is disposed facing the outer periphery of the lower end of the tank 2, the temperature increases due to the radiant heat from the tank 2 and the heater 3, which may cause a malfunction or lower reliability. In order to avoid this, it is conceivable to arrange the operation part 11 so as to protrude outward from the case 1, but in such a state, the appearance will be significantly deteriorated, and if it is large, it will be an obstacle for use. .

[Purpose of the invention]

This idea was developed with this in mind, and its purpose is to reliably prevent the temperature of the operating section from rising and improve reliability without protruding the operating section outside of the case. The purpose is to provide a hot water pot that can keep the water boiling.

[Summary of the idea]

In other words, this idea stores a tank in a case so that it floats upward from its lower end, and a heater and a temperature sensor are installed around the lower end of the tank, and the heater is controlled based on the temperature detected by the temperature sensor. A control circuit mechanism that heats water to the boiling point and keeps it warm is provided on the inner bottom of the lower end of the case, and an operating section for operating this control circuit mechanism is provided on the outer periphery of the lower end of the case, facing the lower space of the tank. , the hot water in the tank is poured out through a spout using a drop.

[Example of idea]

An embodiment of this invention will be described below with reference to FIGS. 2 and 3. In the figure, 21 is a case, and a tank 22 is housed in this case 21.
This tank 22 is held so as to float above the lower end of the case 21, so that a large space a is secured below the tank 22. tank 22
A molten metal lead pipe 23 is led out from the lower end of the molten metal lead pipe 2.
3 is connected to a spout 24 disposed on the outer surface of the case 21 so as to be at the same level as the lower end of the tank 22, and a valve mechanism (not shown) is incorporated in the spout 24. A heater 2 is installed on the outer periphery of the lower end of the tank 22.
5 and a temperature sensor 26, and a control circuit mechanism 28 is provided at the center of the upper surface of the bottom cover 27 disposed on the lower end side of the case 21. and is covered with a heat shield plate 30. An operating portion 31 is provided on a part of the circumferential surface of the lower end of the case 21 and slightly protrudes from the circumferential surface of the case 21 by, for example, 2 to 6 mm.
The operating section 31 is formed by mounting electronic components 33 such as ICs and various semiconductors on the inner surface of a base 32, and is arranged facing the space a below the tank 22.
An operation knob, an indicator lamp, etc. (not shown) are provided on the front surface of the base 32. Operation unit 3
As clearly shown in FIG. 3, it is preferable that the arrangement position of No. 1 be located below the spout 24 and in a 45 degree range to the left and right of the circumferential surface on the opposite side of the spout 24. Therefore, even if hot water drips from the spout 24, it will not come into contact with the operation part 31, and the pouring operation will not become difficult.

The upper lid 34 is rotatably provided on the upper end of the case 21, and the upper lid 34 is opened to store water in the tank 22. The numeral 35 is a portable lid attached to the upper end of the case 21. It is a handle for.

In the hot water pot constructed in this way, the heater 2 is controlled by the control circuit mechanism 28 in the same way as described above.
5 to heat the water in the tank 22 to the boiling point and keep it warm. Then, the valve mechanism of the spout 24 is opened and the hot water in the tank 22 is poured into the spout 24 by the head.
Pour out sequentially through step 4.

The operation part 31 does not face the tank 22 or the heater 25, but only faces the space a below the tank 22, and therefore receives almost no radiant heat from the tank 22 or the heater 25, and therefore is easy to operate. It is possible to suppress the temperature rise without causing the portion 31 to particularly protrude outwardly from the case 21. This makes it possible to prevent malfunctions and improve reliability. In addition, temperature control mechanism 2
8 is also spaced apart from the tank 22 by a large distance and is doubly protected by the support metal fittings 29 and the heat shield plate 30, so that its temperature rise can be reliably suppressed.

[Effect of idea]

As explained above, according to this invention, it is possible to prevent the temperature of the operating section from increasing without protruding the operating section to the outside of the case, thereby improving reliability.

[Brief explanation of drawings]

FIG. 1 is a partially cutaway front view of a conventional hot water kettle, FIG. 2 is a partially cutaway side view of a hot water kettle according to an embodiment of the invention, and FIG. 3 is a plan view. 21... Case, 22... Tank, 24... Spout, 25... Heater, 26... Temperature sensor, 2
8...Control circuit mechanism, 31...Operation unit.

Claims (1)

[Scope of utility model registration request] A tank is housed in a case so that it floats upward from its bottom edge, and a heater and a temperature sensor are installed around the bottom edge of the tank, and the heater is controlled based on the temperature detected by the temperature sensor to bring the water in the tank to the boiling point. A control circuit mechanism for heating and keeping warm is provided on the inner bottom of the lower end of the case, and an operating section for operating this control circuit mechanism is provided on the outer periphery of the lower end of the case, facing the lower space of the tank. A hot water kettle that dispenses water through a spout using a drop.