JPH01305913A - Jar pot - Google Patents

Abstract

PURPOSE:To improve the water taste by perfectly removing the calcium compounds contained in water by providing a control circuit for the operation of the repetitive boiling function only in the case when water is supplied and the hot water temperature in a container lowers below a set boiling temperature. CONSTITUTION:A control circuit part 7 is installed at the bottom part of a container 1. When water is supplied into the container 1, the water temperature in the container 1 is ordinary 65 deg.C or below, and this temperature is memorized in the control circuit part 7, and electric conduction is automatically carried out in a main heater 3 after the lapse of a proper time, e.g., 1-3min, after the completion of boiling, the boiling is carried out again. When boiling is detected by a temperature sensor 6, the electric conduction to the main heater 3 is suspended, and a liquid 2 lowers because of the natural cooling. When said lowering is carried out to the heat insulation temperature, said lowering is detected by the temperature sensor 6, and the electric conduction to a heat insulation heater 4 in a heating device 5 is connected/disconnected, and the hot water temperature is kept constant. Since the boiling operation is repeated at a proper time intervals only in case of supply of water, the calcium compounds contained in the water can be perfectly removed.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an improvement in a jar pot for general household use that keeps water at an appropriate temperature after boiling it.

BACKGROUND OF THE INVENTION In general, hot water used for brewing tea, coffee, and black tea is preferably free of limescale and carbon dioxide gas. After boiling, the power to the main heater is turned off, and then power is turned on to the insulating heater to keep the water at a high temperature. This uses a heater with slightly higher power consumption to detect the water temperature and control the power supply to the heater to maintain a high temperature of about 90 to 98 degrees Celsius. In other words, after filling the container with water, it is boiled and kept warm to maintain high temperature water.

Problems to be Solved by the Invention In the conventional technology, boiling occurs only once and the boiling time is short, ranging from a few seconds to several tens of seconds, so that it is not possible to completely remove limescale etc. dissolved in the water. If the boiling time is made long enough, limescale and the like can be removed, but if the boiling time is made long continuously, there is a problem in that the durability of resins, rubber parts, etc. is reduced.

Means for Solving the Problem A heating device consisting of a main heater and a heat-retaining heater and a temperature sensor for detecting the temperature of water in the container are attached to the bottom of a bottomed container containing a liquid, and a temperature sensor that detects the temperature of the water in the container is installed. In the jar pot equipped with a control circuit unit that controls the energization to the heating device, when the boiling temperature is lower than the hot water temperature and the keeping temperature, the heating device is energized, and then the boiling state is repeated several times, and then the heating device is kept warm. The control circuit section is equipped with a function to control the heating device so as to maintain the temperature.

Effects With the above configuration, when water is supplied, the temperature of the water in the container will be below the set value of the water boiling temperature, and the temperature sensor will determine this. In this state, electricity is started to be supplied to the main heater, and the water boils and enters a heat-retaining state.

After a suitable period of time has elapsed in the heat-retaining state, the main heater is automatically energized to boil again and reduce the limescale odor. If the main heater starts to be energized at a temperature higher than the boiling temperature, the boiling operation will only occur once. That is, only when water is supplied, the boiling operation is repeated after an appropriate time to remove limescale contained in the water.

Example An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a schematic diagram of the structure of a jar pot showing an embodiment of the present invention, FIG. 2 is a schematic diagram of an electric circuit, and FIG. 3 is a diagram showing changes in the temperature of water in the container.

In FIG. 1, 1 is a container containing liquid 2, etc.;
At the bottom of the container 1, there is a heating device 5 consisting of a main heater 3 and a heat-retaining heater 4, and a temperature sensor 6 that detects the temperature of the water inside the container 1.
The heating device 5 is equipped with a control circuit section 7 that controls energization of the heating device 5 based on a signal from the temperature sensor 6. The control circuit section 7 has functions to perform the functions described below. 8 is a hot water supply pipe installed inside the container, and the downstream side is connected to a hot water outlet 9. Reference numeral 10 denotes a lid provided on the upper part of the container 1, and inside the container 1 there is provided a lid for applying air pressure inside the container 1 when hot water in the container 1 is tapped, and sending the hot water 2 through the hot water supply pipe 8 to the hot water outlet 9. It has a built-in air pump 11.

FIG. 2 is an electric circuit diagram, in which 12 is a power source, and 13 is an overheating prevention fuse installed near the inside of the heating device 5. All signals from within the temperature sensor 6 are sent to the control circuit section 7.
This signal controls the energization of the main heater 3 and the heat-retaining heater 4 in the heating device 5.

Next, the operation of the present invention having the above configuration will be explained. In FIGS. 1, 2, and 3, water is placed in a container 1 and a main heater 3 in a heating device 5 is energized to heat the liquid 2 inside. When this boils, the temperature sensor 6 detects this and the power supply to the main heater 3 in the heating device 5 is stopped. In this case, the heat-retaining heater 4 is also not energized, so the temperature of the high-temperature water (liquid) 2 in the container 1 decreases due to natural cooling. The higher the internal water temperature, the greater the difference from the ambient temperature and the faster the cooling rate.Also, when water is supplied into the container 1, the water temperature in the container 1 is usually the boiling temperature (for example, 65°C in the explanation of this embodiment). Since this temperature is stored in the control circuit section 7, the main heater 3 is automatically energized after an appropriate time (for example, 1 to 3 minutes) has elapsed after the end of boiling, and the boiling occurs again. When boiling is detected by the temperature sensor 6, the power supply to the main heater 3 is stopped and the liquid 2 decreases due to natural cooling. When the temperature drops to the keeping temperature, the temperature sensor 6 detects this and the supply of electricity to the keeping heater 4 in the heating device 5 is interrupted to keep the water temperature constant. During heat retention, when hot water is supplied into the container 1 after being tapped, the same operation as described above is performed to perform double boiling and remove scale from the supplied water. That is, only when water is supplied into the container 1 and the water temperature in the container 1 drops below the set boiling temperature, the repeated boiling function is activated to remove scale contained in the supplied water. and provide delicious hot water.

As described above, according to the present invention, in a jar pot equipped with a main heater, a heat-retaining heater, a temperature sensor, and a control circuit section at the bottom of the container, the water boiling temperature is set lower than the hot water temperature and the heat-retaining temperature in the container. If the main heater starts energizing and starts boiling water after the temperature drops below, the repeat boiling function is activated, which automatically re-boils the water after it boils and then re-boils after an appropriate amount of time has passed. This removes the limescale that is present in the water and supplies delicious hot water.

By doing this, you can make tea using this hot water.
To provide a jar pot in which the taste of coffee is not spoiled by the smell of limescale when it is poured into it.

[Brief explanation of the drawing]

is a characteristic diagram showing changes in the temperature of hot water in the container. 1... Container, 2... Liquid, 3... Main heater, 4... Heat retention heater, 5... Heating device,
6... Temperature sensor, 7... Control circuit section.

Claims (1)

[Claims] A heating device (5) consisting of a main heater (3) and a heat-retaining heater (4) and a temperature sensor (6) that detects the temperature of the water inside the container (1) are installed at the bottom of the bottomed container (1) containing the liquid (2). ), and further includes a control circuit unit (
In a jar pot equipped with 7), if the water temperature is lower than the keeping temperature, turn on the heating device (5), repeat the boiling state several times, and then maintain the keeping temperature. A jar pot characterized in that a control circuit section (7) has a function of controlling a heating device (5).