JPH03112519A - Water boiling served also as temperature holding unit - Google Patents

Abstract

PURPOSE:To boil water and to hold at a hot and cold temperature thereof by providing a heating means for heating liquid in a container, an electronic cooling element for cooling liquid in a container and a fan for blowing air to a heater radiator. CONSTITUTION:Water is filled in a container 1, and a heating mode is selected by a temperature selecting switch 12. When a commercial power 14 is energized, a control means 13 closes a relay contact 8a, the heating means 2 heats water in the container 1. When the water is boiled, the temperature rise at a thermistor is ceased so that the control means 13 stops the heating of the heating means 2, and accordingly, the thermistor 4 controls the turn-on and -off of an energizing means 9 so as to hold the temperature of water at a predetermined degree (for example, 90deg.C). Meanwhile, if a cooling mode is selected by the temperature selecting switch 12, the control means 13 delivers an turn-on signal to an energization control means 10 and a d.c. power source 11 so that a fan 7 rotates to blow air to a heater 6, and further, a d.c. power is applied to an electronic cooling element 5, and the cooling side thereof is cooled, resulting in cooling of water in the container 1. The temperature at the thermistor 4 comes to a predetermined degree (for example, 5deg.C), the control means 13 stops the rotation of the fan 7, and the supply of d.c. power to the electronic cooling element 5.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a hot water heater for boiling and keeping a liquid contained in a container warm.

BACKGROUND OF THE INVENTION Conventional thermal water heaters have been designed to keep liquid at a high temperature after it has been boiled.

Problems to be Solved by the Invention However, such conventional systems only have the function of boiling a liquid and keeping it warm, so although it is useful in the winter, it is often not used in the summer.

The present invention solves these problems and aims to provide a hot water heater that can also be used for cooling purposes.

Means for Solving the Problems In order to solve the above-mentioned problems, the heat-retaining water heater of the present invention includes, in addition to the heating means, an electronic cooling element for cooling the liquid in the container, and further includes a thermoelectric cooling element that is pressed into contact with the electronic cooling element. The radiator is equipped with a fan that blows air.

Function The above-mentioned configuration enables not only boiling water and keeping it warm at high temperatures, but also keeping it cold by cooling it, so it can be used in all seasons, such as hot Japanese tea in the winter and cold barley tea in the summer.

Example Hereinafter, one embodiment of the present invention will be described based on the drawings.

FIG. 1 is a partially cutaway side view of a heat-retaining boiler according to an embodiment of the present invention. In FIG. 1, a first heating means 2 for boiling the liquid in the container 1 and a second heating means 3 for keeping the liquid in the container 1 at a predetermined temperature are provided on the outer bottom of a container 1 that contains a liquid. , a thermistor 4 for detecting the temperature of the liquid in the container 1 is provided. In addition, on the outer surface of the container 1,
An electronic cooling element 5 that uses the Peltier effect to cool the liquid in the container 1 is provided, and this electronic cooling element 5 is equipped with a radiator 6.
are pressed into contact with each other, and a fan 7 for sending air to the radiator 6 is further provided.

Figure 2 shows an example of the circuit diagram of the water heater.

In FIG. 2, the first energization control means 8 that controls the energization of the first heating means 2 includes a relay contact 8a connected in series to the first heating means 2 and a relay coil that drives the relay contact 8a. 8b. Further, a second energization control means 9 that controls energization of the second heating means 3 and a third energization control means 10 that controls energization of the fan 7 are connected in series to the second heating means 2 and the fan 7. It is composed of two-way thyristors.

11 is a DC power supply that supplies current to the electronic cooling element 5; 12
is a temperature selection switch that selects heating or cooling. Signals are inputted to the control means 13 from the thermistor 4 and the temperature selection switch 12, and the first energization control means 8, the second
An on/off signal is output to the energization control means 9, the third energization control means 10, and the DC power supply 11. 14 is a commercial power supply.

The operation of the above configuration will be explained next.

First, water is poured into the container 1, heating is selected with the temperature selection switch 12 (temperature selection switch 12 is open), and when the commercial power supply 14 is applied, the control means 13 outputs an on signal to the relay coil 8b. The relay contact 8a closes. As a result, the first heating means 2 generates heat and heats the water in the container 1. When the water boils, the temperature rise of the thermistor 4 stops, and the control means 13 detects boiling due to the decrease in the temperature rise of the thermistor 4, outputs an off signal to the relay coil 8b, and opens the relay contact 8a. 1st
The heating means 2 stops generating heat. And thermistor 4
The second
The energization control means 9 is turned on and off.

On the other hand, when cooling is selected with the temperature selection switch 12, the control means 13 outputs an ON signal to the third energization control means 10 and the DC power supply 11, and the fan 7 rotates to send air to the radiator 6. DC power flows through the cooling element 5, the cooling side of the electronic cooling element 5 (the side in contact with the container 1) is cooled, and the water in the container 1 is cooled. Note that the heat radiation side of the electronic cooling element 5 generates heat, but the heat is radiated by the heat radiator 6. When the temperature of the thermistor 4 falls below a predetermined temperature (for example, 5° C.), the control means 13 outputs an off signal to the third energization control means IO and the DC power supply 11, stops the rotation of the fan 7, and turns off the electronic The supply of direct current to the cooling element 5 is stopped. This is repeated to maintain the thermistor 4 at a predetermined temperature.

Effects of the Invention As described above, according to the present invention, it is possible to not only boil water and keep it warm, but also to cool it, so it can be used throughout the year and is highly practical.

[Brief explanation of drawings]

FIG. 1 is a partially cutaway side view of a hot water heater according to an embodiment of the present invention, and FIG. 2 is a circuit diagram of the hot water heater. 1... Container, 2... First heating means, 3... Second
heating means, 4... thermistor, 5... electronic cooling element, 6... radiator, 7... fan, 8-10...
First to third energization control means, 11... DC power supply, 12
... Temperature selection switch, 13... Control means.

Claims (1)

[Claims] 1. A container that contains a liquid, a heating means that heats the liquid in the container, an electronic cooling element that cools the liquid in the container, a radiator that is in pressure contact with the electronic cooling element, and a fan that blows air to the radiator. Equipped with a water heater that also serves as a heat insulator.