JP2000139714A - Electric hot water pot - Google Patents

Abstract

PROBLEM TO BE SOLVED: To save electric power at night when people do not act much like sleeping time by controlling this electric jar pot so as to keep a second retaining temperature, when the intensity of radiation in the outside that an optical sensor detects is smaller than a specified intensity of radiation and serve as a usual hot-water heater or keep a specified temperature when it is larger than a specified intensity of radiation. SOLUTION: When the water temperature in a container 2 rises and the temp. of a temperature sensor 5 of the bottom reaches a specified temp., a microcomputer in a control device 28 starts to detect the boiled state. When it judges that water has boiled, a main heater is stopped and the heat is retained by an auxiliary heater to keep the temperature. Then an optical saving power selection switch 27 is depressed, an optical sensor 26 is actuated to detect the intensity of radiation of the outside and judge whether the intensity of visible rays is brighter than a specified intensity of radiation. When it detects a lower intensity of radiation than a specified one, a second retaining temp. of hot water, 60 deg.C for instance, lower than a specified usual retaining temperature is kept by the controller 28. When the controller detects water more than a specified quantity of water and the hot water is lower than a specified temperature, 90 deg.C for instance, the heater 4 is electrified to heat water. Thereafter, a specified temperature, 96 deg.C for instance, is retained.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a jar pot having a function of heating water in a container by an externally supplied power source, boiling the hot water, and keeping the temperature at a predetermined temperature.

[0002]

2. Description of the Related Art A conventional jar pot consumes wasteful electric power because a high-temperature hot water is kept warm by a warming heater even during bedtime when hot water is not used. In order to avoid this waste, there is a timer which has a timer function and energizes the heat retaining heater only for a necessary time.

[0003]

In the above-mentioned conventional jar pot, since the heating function is energized only for a required time by a timer function, not only is it necessary to pay attention to the set time, but also the usability such as forgetting the set. There was a problem that was not good.

[0004]

In order to solve the above problems, the present invention provides an optical sensor for detecting the amount of external visible light, and the amount of external light detected by the optical sensor is equal to or less than a predetermined amount. In the case of (2), the second heat retention temperature is maintained, and when the light amount is equal to or more than a predetermined light amount, control is performed so as to maintain a normal water heater and a predetermined temperature.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION The jar pot of the present invention is provided with an optical sensor, and when the optical sensor detects a light amount of less than a certain value during the heat insulation, the jar pot keeps the heat at a second heat insulation temperature lower than the normal heat insulation temperature, and keeps the temperature constant. When the light amount or more is detected, control is performed so as to perform normal water heating and heat retention.

In addition, a predetermined time is provided for detecting the light amount, and the time for detecting the light amount equal to or less than the predetermined light amount and the time for detecting the light amount equal to or more than the predetermined light amount are changed.

That is, the time for detecting the light amount equal to or more than the predetermined light amount is set longer than the time for detecting the light amount equal to or less than the predetermined light amount.

[0008] With the above-described structure, in the case of use in a bright place, the heater is kept at a normal temperature and at a predetermined temperature (about 96 ° C), and at the night or in a dark place where nobody is present, the second warming temperature ( (Approximately 60 ° C.), which is convenient for everyday use.

[0009] Further, by providing a fixed time for the detection time of the external light amount, it is not necessary to perform a water heater except for a malfunction or a necessity, so that unnecessary power is not consumed.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIG.

In FIG. 1, reference numeral 1 denotes a main body, and 2 denotes a container for storing a liquid 3 such as water therein.
Reference numeral 4 denotes a heating element mounted on the bottom of the container 2 and a liquid 3 in the container 2
Heat and keep warm. Reference numeral 5 denotes a temperature sensor attached to the center of the bottom of the container 2. Reference numeral 6 denotes a hole formed in the front part of the bottom surface of the container 2. A container pipe 7 penetrates the hole 6. Have been. The packing 9, the gauge pipe 10, and the falling water prevention valve 1 are sequentially provided at the end of the electric pump 8.
1, the sprue pipe 12 and the sprue cover 13 are connected to form a tapping path 14.

Reference numeral 15 denotes a lid mounted on the upper opening of the main body 1 so as to be rotatable about a hinge 16, and 17 denotes a lid 15
Is an opening / closing lever provided in front of. A back cover 18 is attached to the lower opening of the cover 15, and an inner cover 19 is attached and fixed so as to cover the lower surface.

Reference numeral 20 denotes a steam hole provided on the upper surface of the rear part of the cover 15, and the back cover 18 and the inner plug 21 are connected to the steam hole 20.
A steam passage is formed. Reference numeral 22 denotes a steel-side steam-side falling water prevention valve provided on the inner stopper 21. Reference numeral 23 denotes a hook provided in front of the lid 15 so as to be locked with the opening / closing lever.
Reference numeral 4 denotes a main body ring covered on the upper part of the main body 1. A control operation unit 25 is provided on the upper surface of the distal end portion of the main body ring 24. The control operation unit 25 has an optical sensor 26 for detecting the amount of visible light and a light-saving key 27.

Reference numeral 28 denotes a control device for controlling the entire jar pot, which includes a heating element 4, a temperature sensor 5, and an optical sensor 26.
And so on. Reference numeral 29 denotes a waterproof case covered by the control device 28, reference numeral 30 denotes a bottom frame of the main body 1, and reference numeral 31 denotes a turntable attached to the bottom frame 30. Reference numeral 32 denotes a carrying handle provided on the main body 1.

Next, the operation of this embodiment having the above configuration will be described with reference to FIG. FIG. 2 is a diagram showing a state at the time of heat retention.

When the opening / closing lever 17 provided in front of the lid 15 is lifted, a hook 23 fitted to the main body ring 24 is raised.
Is pushed backward, and the lid 15 is opened when the fitting portion is released.

The water 3 which is a liquid is put in the container 2 and the lid 15
Is closed and the power is supplied, the control device 28 controls the information based on the information from the temperature sensor 5 and the heating element 4 heats the water to start water heating.

Thereafter, the water temperature in the container 2 gradually rises,
At the same time, when the temperature of the temperature sensor 5 attached to the bottom of the container 2 rises and reaches a predetermined temperature, the control device 2
The microcomputer mounted in 8 starts boiling detection.

The microcomputer mounted in the control device 28
When it is determined to be boiling, the main heating element is stopped, and the temperature is maintained by the auxiliary heating element to be in a heat retaining state.

Here, when the light saving selection key 27 is pressed (turned on), the light sensor 26 operates. The light sensor 26 detects the amount of external visible light and sets the amount of external visible light. It is to determine whether or not the light amount is higher than the determined light amount.

When the amount of external visible light is detected to be equal to or less than a predetermined amount, the controller 28 keeps the hot water temperature at a second temperature, for example, 60.degree. C., which is lower than a predetermined normal temperature. In addition, when the light amount is equal to or more than a predetermined light amount and the hot water temperature is, for example, 90 ° C. or less, the heating element 4 is energized to perform water boiling, and thereafter, a predetermined temperature, for example, 96 ° C. is maintained. Therefore, the unused power during the operation of the optical sensor in FIG. 2 has an energy saving effect.

Further, by providing a fixed time for detecting the amount of external visible light, the light sensor can detect the light in the shadow of a person who is active in the daytime or an object at a moment, turn on the light for a moment at night, and There is no need to detect the light of a passing car or the like, and there is no needless operation or water heating.

Also, by changing the time for detecting the light amount equal to or less than the certain light amount and the time for detecting the light amount equal to or more than the certain light amount, for example, the time for detecting the light amount equal to or less than the certain light amount is set to several seconds. Without doing,
When you turn off the lights to go to bed at night, you can confirm in a few seconds that the light sensor detects.

On the other hand, by setting the time for detecting a certain amount of light or more to several minutes, for example, the light sensor can detect light even for a short time such as going to a toilet at night or drinking water when the throat dries. In addition, there is no need to heat the water when it is not necessary, and no needless electricity is consumed.

[0025]

As is apparent from the above description, the jar pot of the present invention maintains the second warming temperature (60 ° C.) when the external light amount is equal to or less than the predetermined light amount, so that the jar pot can be used at night. It can save electricity when people are not very active, such as when the room is dark.

Further, since the temperature is maintained at 60 ° C., the water can be heated in a short time, for example, when it becomes bright in the morning or when hot water is required at night. Further, even if the temperature is kept at 60 ° C. for a long time, the temperature at 60 ° C. makes it difficult for bacteria and the like to propagate in hot water.

Further, by giving a certain time to the time for detecting the amount of external light, a malfunction is prevented, and the usability is improved without unnecessary water heating when not necessary.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing one embodiment of the present invention.

FIG. 2 is a diagram showing a state at the time of heat retention.

[Explanation of symbols]

 1: body, 26: light sensor, 28: control device.

Claims (3)

[Claims] 1. A jar pot having a function of heating water in a container by a power supply supplied from the outside and keeping the water at a predetermined temperature after boiling the water. Optical sensor that detects the amount of light (2
6) is provided, and when the optical sensor (26) detects a light amount equal to or less than a predetermined light amount, the optical sensor (26) holds a second heat insulation temperature lower than the predetermined heat insulation temperature, and when the light sensor (26) detects a light amount equal to or more than the predetermined light amount,
A jar pot having a function of maintaining a normal boiling water and a predetermined heat retaining temperature. 2. A method according to claim 1, wherein a predetermined time is provided for detecting the light amount in the light amount detection time, and a time for detecting the light amount equal to or less than the predetermined light amount and a time period for detecting the light amount equal to or more than the predetermined light amount are changed. The jar pot according to 1. 3. The jar pot according to claim 1, wherein, in the light amount detection time, a time for detecting the light amount equal to or greater than the predetermined light amount is longer than a time period for detecting the light amount equal to or less than the predetermined light amount.