JP2734800B2 - Electric jar pot - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric jar pot having a function of filtering water and a function of performing optimum filtration in accordance with the amount of water and the amount of hot water.

[0002]

2. Description of the Related Art In the filtering function of a conventional electric jar, since the start and stop of the filtration are determined irrespective of the amount of water, when the amount of water is small, excessive filtration is performed, and the life of the filtration means is shortened. .

[0003]

However, when the amount of water added to the pot is small, circulation for filtration can be sufficiently performed in a short time, and when the amount of water is large, long-time filtration is required. This is because the purpose of the filtration is to remove impurities such as chlorine contained in tap water. In the related art, there is a problem that it is not possible to determine the circulation time in detail according to the amount of water.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems, and has as its first object to provide an electric jar pot which determines an optimal circulation start and stop timing by judging an amount of water. It is assumed that.

[0005] It is a second object of the present invention to provide an electric jar pot for finely filtering according to the amount of water.

It is a third object of the present invention to provide an electric jar pot that performs a filtering operation in accordance with the amount of water in a high-temperature region with high filtration efficiency.

[0007]

A first means of the present invention for achieving the first object is a pot, a temperature measuring means such as a thermistor for measuring the temperature of water in the pot, and a pot. Heating means such as a heater for heating the water, a hot water temperature input means for inputting a warming temperature of hot water in the pot, and a difference between the hot water temperature inputted from the hot water temperature input means and the value measured by the temperature measuring means is a predetermined value. Heating control means for operating the heating means when exceeding, water amount determination means for determining the water amount by a signal from the temperature measurement means, time measurement means such as a timer, filtering means such as a filter for filtering water, and a filter Circulating means such as a pump for circulating water, circulating determining means for deciding the start and stop timing of circulation according to the determination result of the water amount determining means, and starting operation of the circulating means according to the determined result of the circulating determining means It is an electric pots with a circulation control means for performing fine stop.

A second means of the present invention for achieving the second object is provided with a circulation time determining means for determining a circulation start time and a circulation stop time as the circulation determining means, and the circulation time determining means is fuzzy. The circulation control means is an electric jar which starts and stops the operation of the circulation means based on the result of the determination by the circulation time determination means and the time obtained by the timer means.

A third means of the present invention for achieving the third object is a circulation temperature determining means for determining a value of a temperature measuring means for starting circulation and a value of a temperature measuring means for stopping circulation as circulation determining means. Determining means, the circulating temperature determining means comprises a fuzzy inference device, and from the determination result of the circulating temperature determining means and the measured value of the temperature measuring means, the circulating control means includes an electric jar pot for starting and stopping the operation of the circulating means. Is what you do.

[0010]

The operation of the first means is as follows. That is, when water is added to the pot and the difference between the hot water temperature input from the hot water input means and the value measured by the temperature measuring means exceeds a predetermined value, the heating control means operates the heating means. At this time, the water amount determination means determines the water amount, and the circulation determination means determines the optimum circulation start and stop timings based on the determination result as input, and the circulation control means starts the operation of the circulation means according to the determination result of the circulation determination means. And stop.

The operation of the second means is as follows. That is, a circulation time determination means for determining a circulation start time and a circulation stop time as circulation determination means, the circulation time determination means is composed of a fuzzy inferencer, and from the determination result of the circulation time determination means and the time by the timing means, The circulation control means starts and stops the operation of the circulation means. By using a fuzzy inferencer as a decision means, it is possible to easily express a complicated nonlinear input / output relationship.

The operation of the third means is as follows. That is, a circulation temperature determination means for determining a value of a temperature measurement means for starting circulation and a value of a temperature measurement means for stopping circulation as circulation determination means, wherein the circulation temperature determination means comprises a fuzzy inferencer, The circulation control unit starts and stops the operation of the circulation unit based on the determination result of the determination unit and the measurement value of the temperature measurement unit. Since the circulation is performed during the operation of the heating means, the circulation time can be controlled by giving the value of the temperature measurement means for starting the circulation and the value of the temperature measurement means for stopping the circulation. By controlling the circulation at a temperature, the circulation can be performed in a high temperature region where the filtration efficiency is high. In addition, there is a complicated difference between the actual hot water temperature and the value measured by the temperature measuring means according to the amount of hot water and the amount of added water. Can be expressed simply.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described with reference to FIGS. In FIG. 1, 1 is a pot, 2 is a temperature measuring means such as a thermistor for measuring the temperature of water in the pot 1, 3 is a heating means such as a heater for heating the pot 1, and 4 is a hot water for inputting a heat retaining temperature of the hot water. Heating control means for operating the heating means 3 when the difference between the hot water temperature input from the hot water input means 4 and the value measured by the temperature measuring means 2 exceeds a predetermined value;
6 is a water amount determining means for determining the amount of water based on a signal from the temperature measuring means 2, 7 is a time measuring means, 8 is a filtering means such as a filter, 9 is a circulating means such as a pump for circulating water through the filtering means 8, and 11 is a water amount. The first circulation determining means 10 for determining the start and stop timings of the circulation according to the determination result of the determining means 6 starts the operation of the circulation means 9 according to the determination result of the first circulation determining means 11 and the time of the timer 7. A circulation control means 12 for performing the start and stop of circulation in accordance with the determination result of the water amount determination means 6, and constitutes a first circulation determination means 11.

In FIG. 2, reference numeral 13 denotes a first fuzzy inference unit which constitutes the circulation time determination means 12. The first fuzzy inference unit 13 receives the initial hot water amount and the additional water amount determined by the water amount determining means 6 and determines a circulation start time and a circulation end time. At this time, the heating control unit 5, the water amount determination unit 6, the first circulation control unit 10, and the first fuzzy inference unit 12 can be easily realized by a microcomputer.

FIG. 2 shows an embodiment of the first fuzzy inference unit 13.
This will be described with reference to FIGS. As shown in FIG. 2, the first fuzzy inference unit 13 determines the circulation start time and the circulation end time by using the initial hot water amount and the additional water amount determined by the water amount determination unit 6 as inputs. When only water is put into the pot 1 and the water is boiled, the initial amount of water is 0, and the total amount of water at that time is considered as the additional water amount. The inference rules are, for example, "if the initial hot water amount is large and the additional water amount is small, the circulation start time is slightly later, and the circulation end time is slightly later than the circulation start time", and is composed of four rules shown in FIG. Qualitative concepts such as the initial hot water amount “large”, the additional water amount “small”, and the circulation start time “slightly later” are quantitatively expressed by the membership function shown in FIG. At this time, inference rules and membership functions can be designed empirically or experimentally.

According to such fuzzy inference, a complicated nonlinear input / output relationship can be easily represented, and the circulation start time and the circulation end time according to the amount of water can be determined.

In the present embodiment, the consequent variable of the fuzzy inference is a general triangular type. However, a method of realizing with a real value or a function is also conceivable.

A second embodiment of the present invention will be described with reference to FIGS. In FIG. 5, the same parts as those in the first embodiment are denoted by the same reference numerals, and description thereof will be omitted. Reference numeral 15 denotes second circulation determining means for determining the start and stop timing of circulation according to the determination result of the water amount determining means 6, and reference numeral 14 denotes circulation according to the determination result of the second circulation determining means 15 and the measurement value of the temperature measuring means 2. The second circulation control means 16 for starting and stopping the operation of the means 9, and the circulation for determining the value of the temperature measurement means 2 for starting circulation and the value of the temperature measurement means 2 for stopping circulation according to the determination result of the water amount determination means 6. It is a temperature determining means and constitutes a second circulation determining means 15.

In FIG. 6, reference numeral 17 denotes a second fuzzy inference unit which constitutes the circulation temperature determining means 16. The second fuzzy inference unit 17 determines the value of the temperature measuring means 2 for starting circulation and the value of the temperature measuring means 2 for stopping circulation, using the initial hot water amount and the additional water amount determined by the water amount determining means 6 as inputs. At this time, the second circulation control means 14 and the second fuzzy inference unit 17 can be easily realized by a microcomputer.

FIG. 6 shows an embodiment of the second fuzzy inference unit 17.
This will be described with reference to FIGS. As shown in FIG. 6, the second fuzzy inference unit 17 receives the initial hot water amount and the additional water amount determined by the water amount determining unit 6 as inputs, and receives the value of the temperature measurement unit 2 at the start of circulation (circulation start measured temperature) and the value of the circulation stop. The value of the temperature measuring means 2 (circulation end measured temperature) is determined. When only water is put into the pot 1 and the water is boiled, the initial amount of water is 0, and the total amount of water at that time is considered as the additional water amount. The inference rules are, for example, "If the initial hot water amount is large and the additional water amount is small, the measured circulation start temperature is high and the measured circulation end temperature is somewhat high", and is composed of four rules shown in FIG. A qualitative concept, such as an initial hot water amount “large”, an additional water amount “small”, or a measured circulation start temperature “high”, is quantitatively expressed by a membership function shown in FIG. At this time,
Inference rules and membership functions can be designed empirically or experimentally.

According to such fuzzy inference, a complicated non-linear input / output relationship can be easily represented, and a measured circulation start temperature and a measured circulation end temperature according to the amount of water can be determined. In the present embodiment, the consequent variable of the fuzzy inference is a general triangular type. However, a method of realizing with a real value or a function is also conceivable.

In each of the embodiments described above, the fuzzy inference unit is used as the circulation determination unit. However, the circulation determination unit is not necessarily limited to the fuzzy inference unit. For example, the measured circulation start temperature and the measured circulation end temperature may be determined by using a polynomial that uses the initial hot water amount and the additional water amount as parameters.

[0023]

As described above, according to the first aspect, the circulation determining means for determining the start and stop of the circulation for filtration based on the determination result of the water amount determining means, and the circulation according to the determination result of the circulation determining means. By providing the circulation control means for starting and stopping the operation of the means, it is possible to perform filtration according to an arbitrary amount of water.

According to the second aspect of the present invention, the circulation time determining means uses a fuzzy inference device which inputs the initial hot water amount and the additional water amount by the water amount determining means and outputs the circulation start time and the circulation end time. By providing the circulation control means for starting and stopping the operation of the circulation means based on the determination result of the circulation time determination means and the time measured by the timer means, it is possible to perform filtration according to the amount of water.

Further, according to the third invention, as the circulation determining means, the initial hot water amount and the additional water amount by the water amount determining means are input, and the measured temperatures of the temperature measuring means at the start of circulation and the temperature measuring means at the end of circulation are measured. By having circulation temperature determination means using a fuzzy inference device as an output, and providing circulation control means for starting and stopping the operation of the circulation means based on the determination result of the circulation temperature determination means and the measurement value of the temperature measurement means, the amount of water can be reduced. Accordingly, efficient filtration in a high temperature range can be performed.

[Brief description of the drawings]

FIG. 1 is a schematic sectional view of an electric jar pot according to a first embodiment of the present invention.

FIG. 2 is a block diagram of a circulation time determination unit according to the first embodiment of the present invention.

FIG. 3 is a diagram showing inference rules of a fuzzy inference device according to the first embodiment of the present invention.

FIG. 4 is a diagram showing membership functions of an antecedent part and a consequent part of an inference rule of the fuzzy inference device according to the first embodiment of the present invention.

FIG. 5 is a schematic sectional view of an electric jar pot according to a second embodiment of the present invention.

FIG. 6 is a block diagram of a circulation temperature determining means according to a second embodiment of the present invention.

FIG. 7 is a diagram showing inference rules of a fuzzy inference device according to a second embodiment of the present invention.

FIG. 8 is a diagram showing membership functions of an antecedent part and a consequent part of an inference rule of the fuzzy inference device according to the second embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Pot 2 Temperature measurement means 3 Heating means 4 Hot water temperature input means 5 Heating control means 6 Water amount judgment means 7 Clocking means 8 Filtration means 9 Circulation means 10, 14 First and second circulation control means 11, 15 First, First Second circulation determining means 12 Circulating time determining means 13, 17 First and second fuzzy inference devices 16 Circulating temperature determining means

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Haruo Terai 1006 Kazuma Kadoma, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. Sangyo Co., Ltd.

Claims (3)

(57) [Claims] 1. A pot, a temperature measuring means such as a thermistor for measuring the temperature of water in the pot, a heating means such as a heater for heating the pot, and a hot water temperature input for inputting a heat retaining temperature of hot water in the pot. Means, heating control means for operating the heating means when the difference between the hot water temperature inputted from the hot water temperature input means and the value measured by the temperature measuring means exceeds a predetermined value, and the amount of water by the signal from the temperature measuring means. Water amount determination means to be determined, time measurement means such as a timer, filtration means such as a filter for filtering water, circulation means such as a pump for circulating water through the filtration means, and circulation start according to the determination result of the water amount determination means An electric jar pot comprising: a circulation determining means for determining a stop timing and a circulation timing; and a circulation control means for starting and stopping the operation of the circulation means in accordance with a result determined by the circulation determining means. 2. A circulation determining means comprising a circulation time determining means for determining a circulation start time and a circulation stop time, wherein the circulation time determining means comprises a fuzzy inferencer. 2. The electric jar pot according to claim 1, wherein the circulation control means starts and stops the operation of the circulation means from the time. 3. A circulation temperature determination means for determining a value of a temperature measurement means for starting circulation and a value of a temperature measurement means for stopping circulation as circulation determination means, wherein the circulation temperature determination means comprises a fuzzy inferencer, 2. The electric jar pot according to claim 1, wherein the circulation control means starts and stops the operation of the circulation means based on the determination result of the circulation temperature determination means and the measurement value of the temperature measurement means.