JP3499205B2 - Electric hot water storage container - Google Patents

Description

Detailed Description of the Invention

[0002]

TECHNICAL FIELD OF THE INVENTION

The present invention relates to an electric hot water storage container used as an electric pot or the like, and more particularly to an electric hot water storage container configured so as to be able to supply a fixed amount of hot water.

[Prior art]

The hot water stored in the electric hot water storage container may be used for making hot water for alcohol such as shochu, for melting instant coffee, and for extracting coffee, tea, green tea, etc. Many. In this case, the required amount of hot water is almost determined depending on the amount of alcohols and instant coffee, or the number of people to be extracted. However, in the conventional electric hot water storage container, hot water is supplied continuously while the hot water switch is pressed.

Therefore, by setting the driving time of the electric pump to correspond to the required hot water supply amount, an electric hot water storage container capable of supplying a fixed amount of hot water stored can be supplied. Has been proposed (see, for example, Japanese Utility Model Publication No. 3-103029).

[Problems to be Solved by the Invention]

By the way, in the case of the electric hot water storage container of the above-mentioned known example, when an abnormality occurs in the hot water supply system during fixed amount hot water supply (for example, the remaining amount of hot water in the inner container runs out, or the cavitation phenomenon causes the electric pump to operate normally). Since no means to inform the user is taken,
The hot water supply operation will be continued. Then, there is a possibility that the electric pump may be damaged because it may be judged that it is out of order even if there is no hot water, or the electric pump may idle.

Further, if a fixed amount of hot water is supplied in a state where the amount of hot water in the inner container is less than the set amount of hot water, there is a problem that a desired amount of hot water cannot be obtained.

The present invention has been made in view of the above points, and an object of the present invention is to make it possible to promptly inform a user of the occurrence of an abnormality in the hot water supply system during the constant amount hot water supply.

[Means for Solving the Problems]

According to the invention of claim 1, as means for solving the above-mentioned problems, an inner container for boiling water, a heating means for heating the inner container, and hot water in the inner container are supplied through a hot water supply passage. Electric pump, a fixed amount hot water supply setting means for setting the amount of hot water supply by the electric pump to a predetermined amount, and a fixed amount for performing drive control of the electric pump so as to supply hot water by the set amount of hot water supply set by the fixed amount hot water supply setting means. In an electric hot water storage container equipped with hot water supply control means, hot water supply is provided in the hot water supply passage.
A flow rate measuring means for measuring the flow rate is additionally provided, and the electric pump is operated during the constant hot water supply by the constant hot water supply control means.
Before it stops working properly due to cavitation phenomenon
The hot water supply amount measured by the flow rate measuring means is below the specified value.
An abnormality detecting means for detecting that the abnormal state continues for a predetermined time as an abnormality occurrence, and an alarm means for displaying an abnormality or notifying an abnormality when the abnormality detection means detects the abnormality.

With the above-mentioned structure, the electric pump is operated by the fixed hot water supply control means during the fixed hot water supply.
Not operating normally due to rotation phenomenon
The amount of hot water supply measured by the measuring means is below the specified value.
Although state is to continued for a predetermined period of time, in this case, abnormal onset
This is detected as a raw material, and an alarm display or notification is made by the alarm means. Thus, the user, the electric pump
Abnormalities due to cavitation can be promptly recognized.

The invention of claim 2 solves the above problems.
As a means for this, an inner container for boiling water, and the inner container
Heating means for heating and hot water in the inner container are passed through the hot water supply passage.
Electric pump for hot water supply and hot water supply by the electric pump
And a fixed amount hot water supply setting means for setting the fixed amount hot water supply to a predetermined amount.
Hot water is supplied by the set amount of hot water set by the control means.
And a fixed hot water supply control means for controlling the drive of the electric pump
In the electric hot water storage vessel equipped with, in the hot water supply passage, while attaching a flow rate measuring means for measuring the hot water flow rate, the
Measured flow rate of the flow rate measuring means during quantification hot water supply by quantitative hot water supply control means Ri Do to or greater than a predetermined value, the abnormality a case where the remaining amount of the hot water in the inner container has caused a hunting gone
Error detection means that detects the
When a normal occurrence is detected, an error display or notification
And a warning means for performing.

Due to the above configuration, a fixed amount
Measured flow rate of flow rate measuring means during hot water supply by hot water control means
Has exceeded the specified value and the amount of hot water in the inner container has run out.
May cause hunting, but in this case, abnormal
This is detected as an occurrence, and there is an abnormal display by the warning means.
Or an abnormality is notified. Therefore, the user
It is possible to quickly recognize an abnormality caused by a bug.

In a third aspect of the present invention, as means for solving the above problems, an inner container for boiling water, a heating means for heating the inner container, and hot water in the inner container are supplied through a hot water supply passage. Electric pump, a hot water supply switch for instructing hot water supply by the electric pump, a fixed hot water supply setting means for setting a predetermined amount of hot water supply by the electric pump, and hot water supply by a set hot water supply amount set by the fixed hot water supply setting means. In the electric hot water storage container provided with the constant hot water supply control means for controlling the drive of the electric pump so that the hot water amount detecting means for detecting the hot water amount in the inner container is attached , and the hot water amount detected by the hot water amount detecting means is When it is less than the set hot water supply amount set by the fixed amount hot water supply setting means,
If the set hot water supply amount is changed, it is possible to supply a fixed amount of hot water.
When the specified time has passed without changing the set hot water supply amount
Resets the set hot water supply amount .

With the above configuration, when the hot water amount detected by the hot water amount detecting means is less than the set hot water supply amount set by the fixed hot water supply setting means,
A fixed amount of hot water can be supplied by changing the set hot water supply amount.
When the specified time has elapsed without changing the set hot water supply amount
Therefore, the set hot water supply amount is reset . Therefore,
It is possible to prevent an abnormality from occurring during constant-quantity hot water supply.

DETAILED DESCRIPTION OF THE INVENTION

Hereinafter, some preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

First Embodiment FIGS. 1 to 9 show an electric hot water storage container according to a first embodiment of the present invention.

As shown in FIGS. 1 and 2, this electric hot water storage container comprises a container body 1 having an inner container 3 for storing hot water, a lid 2 for opening and closing the container body 1, and the inner container 3. An electric heater 4 as a heating means for heating, a hot water supply passage 5 for supplying hot water in the inner container 3 to the outside, and an electric pump 6 for sending hot water through the hot water supply passage 5 are configured. There is.

The container body 1 is made of a synthetic resin outer case 7 forming an outer surface and an inner container 3 forming an inner peripheral surface.
And an annular shoulder member 8 made of synthetic resin for connecting the outer case 7 and the inner container 3, and a bottom plate 9 made of synthetic resin forming the bottom surface.

The inner container 3 is composed of a vacuum double structure having a vacuum space between an inner cylinder 10 made of stainless steel having a bottomed cylindrical shape and an outer cylinder 11 made of stainless steel. A single plate portion 3a is formed by only the bottom portion of the inner cylinder 10 excluding the outer peripheral portion. The one plate part 3
The electric heater 4 (for example, a mica heater formed by holding a heating element on a mica plate) is attached to the lower surface of a. At the upper end of the inner container 3, a small-diameter water supply port 3b formed by drawing the upper end of the inner cylinder 10 is formed. Reference numeral 12 denotes a hot water temperature sensor which functions as a hot water temperature detecting means for detecting the temperature of the inner container 3 (in other words, hot water temperature), 1
Reference numeral 3 denotes a full-water level display portion that displays the full-water level of the inner container 3.

The lid 2 is composed of an upper plate 14 made of synthetic resin and a lower plate 15 made of synthetic resin whose outer peripheral edge is connected to the upper plate 14, and is provided at the rear portion of the shoulder member 8. The hinge receiver 16 is supported via a hinge pin 17 so as to be openable / closable and detachable.

Further, the lid 2 is provided with an air pump 18 which is driven by a manual operation so that hot water can be supplied through the hot water supply passage 5 even when the power source is not connected. The air pump 18 is of a bellows type which is disposed in a cylindrical recess 19 formed in a substantially central portion of the lid body 2, and is pressed by a pressing operation via a pressing plate 20. Air is blown into the inner container 3,
Hot water in the inner container 3 is supplied by the pressure of the pressurized air to the hot water supply passage 5
It is supposed to be pushed out to the outside via. Code 2
Reference numeral 1 is a steam discharge passage, and 22 is a fall stop valve provided in the middle of the steam discharge passage 21.

A metal cover member 23 is fixed to the lower plate 12 of the lid body 2.
A seal packing 24, which is pressed against the water supply port 3b of the inner container 3 when the lid 2 is closed, is provided on the outer peripheral edge of the.

The inner container 3 in the middle of the hot water supply passage 5
The electric pump 6 is disposed below the
In this hot water supply passage 5, a straight pipe portion 5a of the inner container 3 below the full-water level display portion 13 is provided with a flow rate sensor 25 that functions as a flow rate measuring means for measuring the flow rate of hot water passing through the hot water supply passage 5. Has been.

As shown in FIGS. 3 and 4, the flow rate sensor 25 is provided with a transparent glass tube 26 provided in the straight tube portion 5a in the hot water supply passage 5 and rotatably in the glass tube 26. It comprises a rotating body 27 that is pivotally supported, and an optical sensor 28 that detects the number of rotations of the rotating body 27.

The rotating body 27 is the straight pipe portion 5 of the hot water supply passage.
A rotary shaft 30 axially supported by bearings 29, 29 provided above and below the glass tube 26 in a.
It is rotatably supported by loosely fitting the boss 27a to the boss 27a. As shown in FIG. 5, three drive blades 31, 31, 31, which receive the pressure of the hot water passing through the hot water supply passage 5,
Above the drive blades 31, 31, 31 there is provided a pair of light shielding blades 32, 32 for blocking the irradiation of light from the light emitting element 28a of the optical sensor 28 to the light receiving element 28b. The light-shielding blades 32, 32 have the boss 27.
It is a square blade standing upright to the outer periphery of a.

The optical sensor 28 is the glass tube 26.
The light is emitted from the light emitting element 28a to the light receiving element 28b at a position outside the boss 27a of the rotating body 27, and the light shielding element 32a in the rotating body 27 causes the light emitting element 28a to emit light. The number of rotations of the rotating body 27 can be measured by measuring the number of times that the irradiation of light from the light receiving element 28b is blocked. The light emitting element 28a and the light receiving element 28b are attached to the outer circumference of the glass tube 26 and are held in a box-shaped sensor holder 33 closed by a detachable sensor cover 34. In the present embodiment, the light shielding blades 32, 32 of the rotating body 27 are always located between the light emitting element 28a and the light receiving element 28b of the optical sensor 28.

By the way, as shown in FIG.
The boss 27a of the rotary shaft 27 is slidable up and down with respect to the rotary shaft 30, and the rotary body 27 is raised by receiving the pressure of the hot water passing through the hot water supply passage 5, and the light shielding blades 32 and 32 of the rotary body 27 are provided in the optical sensor 28. Light emitting element 28a and light receiving element 28b
You may comprise so that it may be located between and. With this configuration, light can be emitted from the light emitting element 28a to the light receiving element 28b in the optical sensor 28 when hot water is not supplied, so that the position of the optical sensor 28 is the same as the full water level display portion 13 of the inner container 3. Then, the full water level in the inner container 3 can be detected by the optical sensor 28.

Further, as shown in FIG. 7, the light shielding blades 32, 32 of the rotating body 27 are connected to the boss 27 a of the rotating body 27.
It may be a triangular blade that is erected at a predetermined angle with respect to. In this way, the light-shielding blade 3 is provided during hot water supply.
The resistance due to 2, 32 can be reduced.

In FIG. 1, reference numeral 35 is an operation panel section provided with various switches described later, 36 is a switch substrate,
Reference numeral 37 is a power supply board provided with a drive power supply circuit for driving the electric pump 6.

As shown in FIG. 2, the operation panel 35 has a hot water supply switch 38, a release / quantity switch 39, a boiling / heat retention selection switch 40, a good night timer switch 41, setting change switches 42 and 43, and a hot water supply indicator lamp. 44,
A boiling indicator lamp 45, a heat retention indicator lamp 46, and a liquid crystal display device 47 are provided.

The setting change switches 42 and 43 are operated when changing the time setting at the time adjustment, and also act as fixed hot water supply setting means for setting the hot water supply amount by the electric pump 6 to a predetermined amount. It is also operated when changing the setting of the hot water supply amount.

The liquid crystal display device 47 is provided with a time / quantity display section 47a, a heat retention set temperature display section 47b and a usage status display section 47c, and various displays are made as follows.

(1) Change of current time When the setting change switches 42 and 43 are pressed, the current time displayed on the time / quantity display section 47a blinks, and when the setting change switches 42 and 43 are further pressed, the time is changed. Be changed. Press and hold to fast forward and return.

(2) Change of good night When the good night timer switch 41 is pressed, "good night 1 start" of the usage status display portion 47c blinks, and the current time displayed on the time / quantity display portion 47a is "good night 1". Change to the start time of. When the setting change switches 42 and 43 are pressed, the start time is changed. When you press the good night timer switch 41 repeatedly, "Good night 1 start" → "Good night 1 end" → "Good night 1 off" → "Good night 2 start" → "Good night 2 end" → "Good night 2 off" → "Good night 1 start" It is supposed to rotate in order.

(3) Selection of boiling / heat retention When the boiling / heat retention selection switch 40 is pressed, rotation is performed in the following order: 90 ° C heat retention → boiling → thermosphere heat retention → boiling → 98 ° C heat retention → boiling → 90 ° C heat retention. . In addition,
If it is left in boiling water, it will be set to the heat retention temperature before boiling.

(4) When the hot water supply release / quantity switch 39 is pressed, the hot water supply indicator lamp 44 lights up, and when the hot water supply switch 38 is pressed, normal electric hot water supply is enabled.

(5) When the fixed quantity hot water supply release / hot water supply switch 39 is continuously pressed for 2 seconds or more, the hot water supply indicator lamp 44 blinks to enter the fixed quantity hot water supply mode, which is displayed on the time / quantity display portion 47a of the liquid crystal display device 47. The current time being displayed disappears, and the amount of hot water supply used last time is displayed. Press the setting change switches 42 and 43 to reach 10m
The amount of hot water supplied is changed in units of l. When the hot water supply switch 38 is pressed, the fixed amount of hot water supply amount displayed on the time / quantity display unit 47a of the liquid crystal display unit 47 is automatically subtracted along with the hot water supply, and when it reaches 0 ml, the hot water supply is automatically stopped. After the hot water supply amount is set, even if a predetermined time has elapsed, the hot water supply work is not performed (in other words, when the hot water supply switch 38 is not turned ON), the set hot water supply amount is reset. Note that 0
If the hand is released from the hot water supply switch 38 during the ml display, the original fixed amount of hot water is displayed, and the fixed amount of hot water can be supplied again. If you release your hand from the hot water supply switch 38 during the above-mentioned fixed amount hot water supply,
Although the subtraction between the hot water supply and the fixed hot water supply amount display is interrupted, when the hot water supply switch 38 is pressed again, the constant hot water supply is continued, but the interruption is continued for 20 seconds or more, or the cancel / quantity switch 3
When 9 is pressed, the fixed amount hot water supply is released, and the liquid crystal display device 4
The current time is displayed on the time / quantity display portion 47a of No. 7.

FIG. 8 is a block diagram showing a configuration of a control system in the electric hot water storage container according to the present embodiment, which is a microcomputer unit (hereinafter referred to as a microcomputer) 4
Signals from the various switches 38 to 43, the hot water temperature sensor 12 and the flow rate sensor 25 are input to 8 and various arithmetic processing is performed, and the results are used as control signals for the electric heater 4, the electric pump 6, and the liquid crystal display device. 47 and buzzer 4
It is supposed to be output to 9.

In addition to the various control functions described above, the microcomputer 48 controls the drive of the electric pump 6 so as to supply hot water only by the set hot water supply amount set by the setting change switches 42 and 43 functioning as fixed hot water supply setting means. And the liquid crystal display device 47 when it is detected that an abnormality has occurred in the hot water supply system (for example, a state in which the amount of hot water in the inner container 3 is exhausted) during the fixed amount hot water supply.
Has a function as a warning means for displaying an abnormality on the display and an alarm notification by the buzzer 49, and a function as a means for stopping the driving of the electric pump 6 when the abnormality is detected.

Next, with reference to the flow chart shown in FIG. 9, the fixed hot water supply control in the electric hot water storage container having the above-mentioned configuration will be described.

When the release / quantity switch 39 is continuously turned ON for 2 seconds or more in step S1, step S1 is executed.
2, the set hot water supply amount A set by the setting change switches 42 and 43 is read into the microcomputer 48, the set hot water supply amount A is displayed on the time / quantity display portion 47a of the liquid crystal display device 47, and the hot water supply switch 38 is displayed in step S3. It is determined whether or not the ON operation has been performed, and if the determination is negative here (in other words, if the hot water supply switch 38 is not turned ON), the process proceeds to step S4, and the drive stop of the electric pump 6 is continued, The process returns to step S2, but if an affirmative determination is made here, the process proceeds to step S5, and driving of the electric pump 6 is started.

Then, a fixed amount of hot water supply is started through the hot water supply passage 5, and hot water flows out through the hot water supply passage 5, so that the light shielding blades 32, 32 provided on the rotating body 27 of the flow rate sensor 25. The number of rotations of the rotating body 27 is measured from the number of times the light sensor 28 is shielded. The rotation speed is converted into the flow rate Q of hot water flowing through the hot water supply passage 5, and is input to the microcomputer 48 in step S6. In the process of this fixed amount hot water supply, the time / quantity display section 47 in the liquid crystal display device 47 is displayed.
The hot water supply amount is subtracted from the set hot water supply amount A displayed in a.

In step S7, the flow rate sensor 25
When the flow rate Q measured by and the set hot water supply amount A are compared, and it is determined here that Q ≧ A (in other words, it is determined that the quantitative hot water supply is completed), step S8
Then, the drive of the electric pump 6 is stopped, and step S9
The completion of hot water supply is displayed by displaying that the set hot water supply amount A has become 0 in step S10, and the completion of hot water supply is informed by making a single beep in the buzzer 49 in step S10. In step S7, if the hot water supply switch 38 is released while 0 is displayed, the liquid crystal display device 4
The set hot water supply amount A is displayed on the time / quantity display portion 47a in 7.

If a negative determination is made in step S7 (in other words, if it is determined that the quantitative hot water supply has not been completed), the process proceeds to step S11, and time t ₁ (for example, 7 seconds) has elapsed. It is determined whether or not, and while the negative determination is made, the process returns to step S2 to continue the quantitative hot water supply, but when the positive determination is made, it is determined that some abnormality has occurred in the hot water supply system (in the present embodiment, In form,
It is determined that the amount of hot water in the inner container 3 is exhausted), the process proceeds to step S12, the driving of the electric pump 6 is stopped, and in step S13, the time / quantity display portion 47a of the liquid crystal display device 47 at that time. The abnormality is displayed by blinking the hot water supply amount displayed on the way, and the abnormality is notified by buzzing the buzzer 49 three times in step S14.

As described above, in the present embodiment, an abnormality occurs in the hot water supply system (in the present embodiment, there is no hot water remaining in the inner container 3) during the constant amount hot water supply. However, when the abnormality is detected,
The time / quantity display section 4 of the liquid crystal display device 47 is displayed by the warning means.
The abnormality is displayed on 7a, and the abnormality is notified by the buzzer 49 buzzing three times. Therefore, the user can quickly recognize an abnormality in the hot water supply system (that is, the amount of hot water in the inner container 3 is exhausted), and the user will not be mistaken for a failure. Moreover, since the drive of the electric pump 6 is stopped when the occurrence of an abnormality is detected, it is possible to avoid damage caused by idling of the electric pump 6 or the like. In the case of the present embodiment, an abnormality occurs when the fixed amount hot water supply is not completed after a predetermined time t ₁ (for example, 7 seconds) (in other words, there is no hot water remaining in the inner container 3). ), The abnormality detection can be performed only by measuring the duration of the quantitative hot water supply, and the abnormality detection control can be easily performed.

In the present embodiment, the occurrence of the phenomenon that the remaining amount of hot water in the inner container 3 runs out during the fixed amount hot water supply is an abnormal occurrence, but the abnormal operation of the electric pump 6 due to cavitation is an abnormal occurrence. You can also

Second Embodiment FIG. 10 shows a flow chart of quantitative hot water supply control in an electric hot water storage container according to a second embodiment of the present invention.

In this case, when the flow rate Q measured by the flow rate sensor 25 becomes lower than the lower limit value Qmin (for example, 10 ml / second) which is extremely smaller than the normal value (for example, 40 ml / second), an abnormality occurs (main In the embodiment,
The fact that there is no remaining hot water in the inner container 3) is detected. Other configurations are the same as those in the first embodiment, and thus the description thereof will be omitted.

Next, with reference to the flow chart shown in FIG. 10, the quantitative hot water supply control in the electric hot water container according to the present embodiment will be described.

When the release / quantity switch 39 is continuously turned on for 2 seconds or more in step S1, step S1 is executed.
2, the set hot water supply flow rate A set by the setting change switches 42 and 43 is read by the microcomputer 48, the set hot water supply amount A is displayed on the time / quantity display portion 47a of the liquid crystal display device 47, and the hot water supply switch 38 is displayed in step S3. It is determined whether or not the ON operation has been performed, and if the determination is negative here (in other words, if the hot water supply switch 38 is not turned ON), the process proceeds to step S4, and the drive stop of the electric pump 6 is continued, The process returns to step S2, but if an affirmative determination is made here, the process proceeds to step S5, and driving of the electric pump 6 is started.

Then, a fixed amount of hot water supply is started through the hot water supply passage 5, and the hot water flows out in the hot water supply passage 5, so that the light shielding blades 32, 32 provided on the rotating body 27 of the flow rate sensor 25 are used. The number of rotations of the rotating body 27 is measured from the number of times the light sensor 28 is shielded. The rotation speed is converted into the flow rate Q of hot water flowing through the hot water supply passage 5, and is input to the microcomputer 48 in step S6. In the process of this fixed amount hot water supply, the time / quantity display section 47 in the liquid crystal display device 47 is displayed.
The hot water supply amount is subtracted from the set hot water supply amount A displayed in a.

In step S7, the flow sensor 25
When the flow rate Q measured by and the set hot water supply amount A are compared, and it is determined here that Q ≧ A (in other words, it is determined that the quantitative hot water supply is completed), step S8
Then, the drive of the electric pump 6 is stopped, and step S9
The completion of hot water supply is displayed by displaying that the set hot water supply amount A has become 0 in step S10, and the completion of hot water supply is informed by making a single beep in the buzzer 49 in step S10. In step S7, if the hot water supply switch 38 is released while 0 is displayed, the liquid crystal display device 4
The set hot water supply amount A is displayed on the time / quantity display portion 47a in 7.

If a negative determination is made in step S7 (in other words, if it is determined that the fixed amount hot water supply is not completed), the flow proceeds to step S11.
The flow rate Q measured by the normal value (for example, 40 ml /
Lower limit value Qmin (eg 10m)
(l / sec) or less is determined, and while the determination is negative here, the process returns to step S2,
Although constant quantity hot water supply is continued, if an affirmative determination is made, it is determined that some abnormality has occurred in the hot water supply system (in the present embodiment, there is no hot water remaining in the inner container 3). , The process proceeds to step S12, the driving of the electric pump 6 is stopped, and at step S13, an abnormality is displayed by blinking the midway hot water supply amount displayed on the time / quantity display portion 47a of the liquid crystal display device 47 at that time, In step S14, the buzzer 49 is made to beep three times to notify the abnormality.

As described above, in the present embodiment, an abnormality occurs in the hot water supply system (in the present embodiment, there is no remaining hot water in the inner container 3) during the constant amount hot water supply. However, when the abnormality is detected,
The time / quantity display section 4 of the liquid crystal display device 47 is displayed by the warning means.
The abnormality is displayed on 7a, and the abnormality is notified by the buzzer 49 buzzing three times. Therefore, the user can quickly recognize an abnormality in the hot water supply system (that is, the amount of hot water in the inner container 3 is exhausted), and the user will not be mistaken for a failure. Moreover, since the drive of the electric pump 6 is stopped when the occurrence of an abnormality is detected, it is possible to avoid damage caused by idling of the electric pump 6 or the like. In the case of the present embodiment, when the flow rate Q by the flow rate sensor 25 becomes lower than the lower limit value Qmin (for example, 10 ml / sec) which is extremely smaller than the normal value, an abnormality occurs (in other words, inside the inner container 3). Since it is determined that the remaining amount of hot water is exhausted), the abnormality can be detected only by measuring the flow rate Q in the hot water supply passage 5 during the constant amount hot water supply, and the abnormality detection control can be easily performed. be able to.

In the present embodiment, the occurrence of the phenomenon that the amount of hot water in the inner container 3 is exhausted during the fixed amount of hot water supply is an abnormal occurrence, but the abnormal operation of the electric pump 6 due to cavitation is an abnormal occurrence. You can also

Third Embodiment FIGS. 11 to 13 show a structure of an electric hot water container and a flow chart of quantitative hot water supply control according to a third embodiment of the present invention.

In this case, as shown in FIG. 11, in the middle of the straight pipe portion 5a in the hot water supply passage 5, the flow sensor 2
An electronic water meter 50, which functions as a hot water amount detecting means for detecting the hot water amount B in the inner container 3, is provided on the upstream side of 5. Further, in the case of the present embodiment, as shown in FIG.
The microcomputer 48 receives signals from the electronic water meter 50 in addition to signals from the various switches 38 to 43, the hot water temperature sensor 12 and the flow rate sensor 25, performs various arithmetic processes, and outputs the result as a control signal. It is supposed to be output to the electric heater 4, the electric pump 6, the liquid crystal display device 47, and the buzzer 49.

In addition to the various control functions described above, the microcomputer 48 controls the drive of the electric pump 6 so as to supply hot water only by the set hot water supply amount set by the setting change switches 42 and 43 functioning as fixed hot water supply setting means. And the amount of hot water B detected by the electronic water meter 50 is the setting change switches 42 and 43.
When the hot water supply amount A is less than the set hot water supply amount A, the setting canceling unit invalidates the setting.

The rest of the configuration is the same as that of the first embodiment, so the explanation is omitted.

Next, with reference to the flow chart shown in FIG. 13, the quantitative hot water supply control in the electric hot water container having the above-mentioned configuration will be described.

When the release / quantity switch 39 is continuously turned on for 2 seconds or more in step S1, step S1 is executed.
In step 2, the set hot water supply amount A set by the setting change switches 42 and 43 is read by the microcomputer 48, and the set hot water supply amount A is displayed on the time / quantity display portion 47a of the liquid crystal display device 47. In step S3, the electronic water amount is set. The amount of hot water B in the inner container 3 detected by the total 50 is read by the microcomputer 48.

Next, in step S4, the set hot water supply amount A and the hot water supply amount B are compared, and if it is determined that A≤B (in other words, fixed quantity hot water supply is possible), the process proceeds to step S5. When the hot water supply switch 38 is turned on,
Proceeding to step S6, driving of the electric pump 6 is started.

Then, a fixed amount of hot water supply is started through the hot water supply passage 5, and the hot water flows out in the hot water supply passage 5, so that the light shielding blades 32, 32 provided on the rotating body 27 of the flow rate sensor 25 are used. The number of rotations of the rotating body 27 is measured from the number of times the light sensor 28 is shielded. The rotation speed is converted into the flow rate Q of hot water flowing through the hot water supply passage 5, and is input to the microcomputer 48 in step S7. In the process of this fixed amount hot water supply, the time / quantity display section 47 in the liquid crystal display device 47 is displayed.
The hot water supply amount is subtracted from the set hot water supply amount A displayed in a.

In step S8, the flow rate sensor 25
When the flow rate Q measured by and the set hot water supply amount A are compared, and it is determined here that Q ≧ A (in other words, when it is determined that the quantitative hot water supply is completed), step S9
Then, the drive of the electric pump 6 is stopped, and step S1
At 0, the completion of hot water supply is displayed by displaying that the set hot water supply amount A has become 0. At step S11, the hot water supply switch 38 is not pressed and the predetermined time t ₂ (for example,
If it is determined that 10 seconds) has elapsed, the process proceeds to step S17, and the time / quantity display section 47 of the liquid crystal display device 47 is displayed.
The hot water supply amount display of a is turned off, and the current time is displayed.

If it is determined in step S4 that A> B (in other words, quantitative hot water supply is impossible), the process proceeds to step S12, and the shortage of hot water is displayed on the time / quantity display portion 47a of the liquid crystal display device 47. In step S13, the liquid-supply-necessary display prompting water supply into the inner container 3 is displayed on the liquid crystal display device 47, and in step S14, it is determined whether or not the set hot water supply amount A is changed, and if the determination is affirmative (in other words, in other words, If the setting is changed), the process returns to step S4, and the set hot water supply amount A and the hot water supply amount B are compared, but if a negative determination is made, the process proceeds to step S15 and the predetermined time t ₂ ( If it is determined that 10 seconds have elapsed, the set hot water supply amount A is reset in step S16, and the time / quantity display on the liquid crystal display device 47 is displayed in step S17. 47a hot water supply amount display is turned off, the current time is displayed. In other words, the set hot water supply amount A cannot be set unless the set hot water supply amount A is changed.

As described above, in the present embodiment, the setting change switches 42 and 4 which are the fixed hot water supply setting means.
When the amount A of hot water detected by the electronic water amount meter 50, which is the amount of hot water detected, is less than the set amount A of hot water supply set by 3, the setting is invalidated. When B is less than the set hot water supply amount A, it becomes impossible to set the fixed amount hot water supply, and it is possible to prevent an abnormality from occurring during the fixed amount hot water supply. Moreover, when the hot water amount B is smaller than the set hot water supply amount A, the water supply required display prompting the water supply is displayed, so that the user can easily confirm the water supply time.

Fourth Embodiment FIG. 14 shows a flow chart of fixed quantity hot water supply control in an electric hot water storage container according to a fourth embodiment of the present invention.

In this case, in addition to the various control functions in the third embodiment, the microcomputer 48 sets the hot water amount B detected by the electronic water flow meter 50, which is hot water amount detecting means, by the fixed hot water supply setting means. When the hot water supply switch 38 is turned on when the amount is less than the amount A, it has a function as a warning means for displaying an abnormality and notifying the abnormality. Other configurations are the same as those in the third embodiment, and the description thereof will be omitted.

Next, with reference to the flow chart shown in FIG. 14, the quantitative hot water supply control in the electric hot water container having the above-mentioned configuration will be described.

When the release / quantity switch 39 is continuously turned on for 2 seconds or more in step S1, step S1 is executed.
In step 2, the set hot water supply amount A set by the setting change switches 42 and 43 is read by the microcomputer 48, and the set hot water supply amount A is displayed on the time / quantity display portion 47a of the liquid crystal display device 47. In step S3, the electronic water amount is set. The amount of hot water B in the inner container 3 detected by the total 50 is read by the microcomputer 48.

Next, if it is determined in step S4 that the hot water supply switch 38 has been turned ON, step S5
In A, the set hot water supply amount A and the hot water supply amount B are compared, and if it is determined that A ≦ B (in other words, fixed amount hot water supply is possible), the process proceeds to step S6 and the drive of the electric pump 6 is started. To be done.

Then, fixed quantity hot water supply is started through the hot water supply passage 5, and hot water flows out through the hot water supply passage 5, so that the light shielding blades 32, 32 provided on the rotating body 27 of the flow rate sensor 25 are used. The number of rotations of the rotating body 27 is measured from the number of times the light sensor 28 is shielded. The rotation speed is converted into the flow rate Q of hot water flowing through the hot water supply passage 5, and is input to the microcomputer 48 in step S7. In the process of this fixed amount hot water supply, the time / quantity display section 47 in the liquid crystal display device 47 is displayed.
The hot water supply amount is subtracted from the set hot water supply amount A displayed in a.

In step S8, the flow rate sensor 25
When the flow rate Q measured by and the set hot water supply amount A are compared, and it is determined here that Q ≧ A (in other words, when it is determined that the quantitative hot water supply is completed), step S9
Then, the drive of the electric pump 6 is stopped, and step S1
At 0, the completion of hot water supply is displayed by displaying that the set hot water supply amount A has become 0, and at step S11, the hot water supply switch 38 is not pressed for a predetermined time t ₂ (for example,
If it is determined that 10 seconds) has elapsed, the process proceeds to step S18, and the time / quantity display section 47 of the liquid crystal display device 47 is displayed.
The hot water supply amount display of a is turned off, and the current time is displayed.

When it is determined in step S5 that A> B (in other words, fixed quantity hot water supply is impossible), the process proceeds to step S12, and the time / quantity display section 47a of the liquid crystal display device 47 displays a shortage of hot water quantity. At the same time, an abnormality is displayed on the liquid crystal display device 47 and an abnormality is informed by the buzzer 49. In step S14, the liquid supply required display for prompting water supply to the inner container 3 is displayed on the liquid crystal display device 47, and in step S15 the set hot water supply amount A Has been changed, and if an affirmative determination has been made (in other words, if the setting has been changed), then the procedure returns to step S4, and it is determined whether or not the hot water supply switch 38 has been turned ON. But
When a negative determination is made, the routine proceeds to step S16, and when it is determined that the predetermined time t ₂ (for example, 10 seconds) has elapsed, the set hot water supply amount A is reset at step S17, and the liquid crystal display device 47 at step S18. The hot water supply amount display of the time / quantity display portion 47a at is turned off and the current time is displayed. In other words, the set hot water supply amount A cannot be set unless the set hot water supply amount A is changed.

As described above, in the present embodiment, the setting change switches 42 and 4 which are the fixed hot water supply setting means.
When the amount A of hot water detected by the electronic water amount meter 50, which is the amount of hot water detected, is less than the set amount A of hot water supply set by 3, the setting is invalidated. When B is less than the set hot water supply amount A, it becomes impossible to set the fixed amount hot water supply, and it is possible to prevent an abnormality from occurring during the fixed amount hot water supply. Moreover, when the hot water amount B is smaller than the set hot water supply amount A, the water supply required display prompting the water supply is displayed, so that the user can easily confirm the water supply time. Further, when the hot water amount B is smaller than the set hot water supply amount A, the driving of the electric pump 6 is stopped, and the abnormality display on the liquid crystal display device 47 and the abnormality notification by the buzzer 49 are performed. It is possible to solve the problem that the desired hot water cannot be obtained because the hot water is exhausted during hot water supply, and the user can be made aware that an abnormality may occur during quantitative hot water supply by the abnormality display or the abnormality notification.

By the way, in each of the above embodiments,
As the flow rate measuring means, a light sensor type flow rate sensor is adopted, but a propeller type, a Karman vortex type, an electric pump interlocking type, a weight type, a sensor type, a vane type and the like can also be used.

【The invention's effect】

According to the invention of claim 1, an inner container for boiling water, heating means for heating the inner container, an electric pump for supplying hot water in the inner container through a hot water supply passage, and the electric pump Electricity provided with a fixed amount hot water supply setting means for setting a predetermined amount of hot water supply according to the above, and a fixed hot water supply control means for performing drive control of the electric pump so as to perform hot water supply by the set hot water supply amount set by the fixed hot water supply setting means. in the hot-water storage container, before
The hot water supply passage is equipped with a flow rate measuring means for measuring the hot water flow rate.
In addition, the electric pump is normally operated by the cavitation phenomenon during the fixed quantity hot water supply by the constant quantity hot water supply control means.
The supply measured by the flow rate measuring means when it stops operating
If the amount of hot water falls below the specified value for a specified time
An abnormality detecting means for detecting an abnormality occurrence, and a warning means for displaying an abnormality or giving an alarm when an abnormality occurrence is detected by the abnormality detecting means are additionally provided, and the electric motor is operated during the constant hot water supply by the constant hot water supply control means. Pump is cavitation
The flow rate measurement function will not work properly due to
There is a state where the hot water supply amount measured by the step is below the specified value.
When an abnormality that continues for a fixed time occurs , the warning means is provided to display the abnormality or notify the abnormality, so that the user can perform cavitation of the electric pump.
That abnormality will be able to quickly recognize, Yellow
There is an effect that it is possible to take an optimum countermeasure against the cavitation abnormality .

According to the invention of claim 2, the inner portion for boiling water
A container, heating means for heating the inner container, and the inner container
Electric pump for supplying hot water from the hot water supply passage through the hot water supply passage,
Fixed-quantity hot water supply setting hand that sets the amount of hot water supplied by the pump to a predetermined amount
And the set hot water supply amount set by the fixed hot water supply setting means
Drive control of the electric pump is performed so that only hot water is supplied.
In an electric hot water storage container provided with a fixed quantity hot water supply control means, a flow rate measuring means for measuring a hot water supply flow rate is attached to the hot water supply passage, and during the fixed quantity hot water supply by the fixed quantity hot water supply control means.
The flow measurement flow measuring means Ri Do a predetermined value or more, lost the remaining amount of the hot water in the inner container to cause hunting
Abnormality detection means for detecting the occurrence of abnormal
If an abnormality is detected by the regular detection means, the abnormality table
A warning means for indicating or notifying an abnormality is attached, and
Measured flow of the flow rate measuring means during fixed quantity hot water supply by the hot water supply control means
The amount exceeds the specified value and there is no remaining hot water in the inner container.
When an abnormality occurs that causes hunting
Is displayed by the warning means.
As a result, the user can check for abnormalities due to hunting.
You will be able to quickly recognize it, and hunting
It is said that it is possible to take optimal measures against abnormalities
effective.

According to the third aspect of the present invention, the inner container for boiling water, the heating means for heating the inner container, the electric pump for supplying the hot water in the inner container through the hot water supply passage, and the electric pump Hot water supply switch for instructing hot water supply by the electric pump, fixed amount hot water supply setting means for setting the amount of hot water supply by the electric pump to a predetermined amount, and driving of the electric pump so as to supply hot water by the set amount of hot water supply set by the fixed quantity hot water supply setting means. In an electric hot water storage container provided with a constant hot water supply control means for controlling, a hot water amount detecting means for detecting the hot water amount in the inner container is attached.
When the amount of hot water detected by the hot water amount detecting means is less than the set hot water supply amount set by the fixed hot water supply setting means, the fixed hot water supply can be changed by changing the set hot water supply amount.
It is possible, but at a predetermined time without changing the set hot water supply amount
Since the set hot water supply amount is reset when the time has elapsed, there is an effect that it is possible to prevent the occurrence of an abnormality during the fixed amount hot water supply.

[Brief description of drawings]

[0080]

FIG. 1 is a vertical cross-sectional view of an electric hot water container according to a first embodiment of the present invention.

FIG. 2 is an enlarged top view of the electric hot water storage container according to the first embodiment of the present invention.

FIG. 3 is an enlarged vertical cross-sectional side view of a flow sensor in the electric hot water container according to the first embodiment of the present invention.

FIG. 4 is an enlarged cross-sectional plan view of the flow rate sensor in the electric hot water container according to the first embodiment of the present invention.

5A and 5B show a rotating body that is a component of the flow rate sensor in the electric hot water container according to the first embodiment of the present invention, in which FIG. 5A is a side view and FIG.

FIG. 6 is an enlarged vertical sectional side view showing another example of the flow rate sensor in the electric hot water container according to the first embodiment of the present invention.

FIG. 7 is an enlarged vertical cross-sectional side view showing another example of the flow rate sensor in the electric hot water container according to the first embodiment of the present invention.

FIG. 8 is a block diagram of a control system in the electric hot water storage container according to the first embodiment of the present invention.

FIG. 9 is a flowchart showing the content of quantitative hot water supply control in the electric hot water storage container according to the first embodiment of the present invention.

FIG. 10 is a flowchart showing the contents of quantitative hot water supply control in the electric hot water storage container according to the second embodiment of the present invention.

FIG. 11 is a vertical sectional view of an electric hot water container according to a third embodiment of the present invention.

FIG. 12 is a block diagram of a control system in an electric hot water container according to a third embodiment of the present invention.

FIG. 13 is a flowchart showing the content of quantitative hot water supply control in the electric hot water storage container according to the third embodiment of the present invention.

FIG. 14 is a flowchart showing the content of quantitative hot water supply control in the electric hot water storage container according to the fourth embodiment of the present invention.

[Explanation of symbols]

1 is a container body, 2 is a lid, 3 is an inner container, 4 is heating means (electric heater), 5 is a hot water supply passage, 6 is an electric pump, and 25
Is a flow rate measuring means (flow rate sensor), 38 is a hot water supply switch, 42 and 43 are quantitative hot water supply setting means (setting change switch), 47 is a liquid crystal display device, 48 is a microcomputer, 49 is a buzzer, 50 is a hot water amount detecting means (hot water amount sensor) ).

─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP-A-11-89723 (JP, A) JP-A-4-200510 (JP, A) JP-A-2-302224 (JP, A) (58) Field (Int.Cl. ⁷ , DB name) A47J 27/21

Claims (3)

(57) [Claims] [0001] 1. An inner container for boiling water, heating means for heating the inner container, an electric pump for supplying hot water in the inner container through a hot water supply passage, and a predetermined amount of hot water supplied by the electric pump. An electric hot water storage container comprising: a fixed hot water supply setting means for setting; and a fixed hot water supply control means for controlling driving of the electric pump so as to perform hot water supply by a set hot water supply amount set by the fixed hot water supply setting means, Hot water supply in the hot water supply passage
A flow rate measuring means for measuring the amount is attached , and the electric pump is operated during the constant hot water supply by the constant hot water supply control means.
Due to the cavitation phenomenon
The amount of hot water measured by the flow rate measuring means is below the specified value.
An abnormality detecting means for detecting that the abnormal state has continued for a predetermined time as an abnormal occurrence, and an alarm means for displaying an abnormality or giving an alarm when the abnormal occurrence is detected by the abnormality detecting means. Electric hot water storage container. 2. An inner container for boiling water and heating the inner container
Heating means and the hot water in the inner container through the hot water supply passage
The electric pump for hot water supply and the amount of hot water supplied by the electric pump
A fixed hot water supply setting means for setting a fixed amount and a fixed hot water supply setting hand
Before hot water is supplied by the set hot water amount set by the step
Equipped with fixed hot water supply control means for controlling the drive of the electric pump
The electric hot water storage container has a hot water supply flow in the hot water supply passage.
A flow rate measuring means for measuring the amount is attached and
The amount measured flow rate of the flow rate measuring means during quantification hot water supply by hot water control means Ri Do to or greater than a predetermined value, a case where the remaining amount of the hot water in the inner container has caused a hunting gone as abnormal
Abnormality detection means for detecting by
If an occurrence is detected, an error display or notification will be sent.
An electric hot water storage container characterized by being provided with a warning means for performing . 3. An inner container for boiling water, heating means for heating the inner container, an electric pump for supplying hot water in the inner container through a hot water supply passage, and a hot water supply switch for instructing hot water supply by the electric pump. A constant hot water supply setting means for setting the hot water supply amount by the electric pump to a predetermined amount; an electrical hot water storage vessel equipped with, as well as attaching a hot water detecting means for detecting the amount of hot water in the inner container, than the set hot water supply amount set by the hot water detected by the該湯amount detection means and said quantitation hot water supply setting means When it is low, the setting
Fixed amount of hot water can be supplied by changing the hot water supply amount.
If the specified time has passed without changing the hot water supply amount, the
An electric hot water storage container characterized in that the constant hot water supply amount is reset .