JP3494983B2 - an electronic 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 pot in which the amount of discharge per unit time during hot water supply can be varied.

[0002]

2. Description of the Related Art As an electric pot, there has been proposed an electric pot having a fixed hot water supply mode for supplying a fixed amount of hot water in addition to a normal hot water supply mode. Those equipped with this fixed amount hot water supply mode are also provided with fixed amount hot water supply setting means capable of varying the amount of supplied hot water, and set a predetermined amount of hot water supply suitable for a large container such as a pot from a small container such as a cup. It is possible to obtain the required amount of hot water by presetting the required amount of hot water and turning on the hot water supply switch.

Hot water supply in the normal hot water supply mode is performed by 100% driving of the electric pump, so that it is not only necessary to place hot water in a container, but even if the container is held by hand and hot water is bounced from the container. It may cause splattering, or when hot water is supplied to a small container, it may give you anxiety that you do not know when the container is full. Even when hot water is supplied to the container, it is possible to wait for the hot water supply to end without worrying about when the container will be full by setting the amount of hot water supplied to the container first.

However, since the conventional constant amount hot water supply has the same discharge amount per hour as the discharge amount in the normal hot water supply mode, whether the container is placed in the hot water supply or held in the hand to supply hot water is bounced or scattered depending on the container. This phenomenon is remarkable not only in the middle of hot water supply but also in the early and late stages of hot water supply, and it may cause anxiety especially when holding a small container such as a coffee cup in the hand to supply hot water.

The present invention provides a means for reducing the amount of discharge per hour during fixed-quantity hot water supply compared with during normal hot-water supply, in order to reduce the rebound and splattering from the container during the entire hot water supply during fixed-quantity hot water supply. However, such a method will increase the filling time of the container, which is convenient when holding a small container such as a coffee cup in the hand to supply hot water, but when supplying water to a large container such as a pot. Since the hot water supply time becomes longer, it causes a new problem that usability is deteriorated.

[0006]

SUMMARY OF THE INVENTION It is an object of the present invention to provide an electric pot that prevents rebounding and splashing from a container by reducing the discharge amount per hour during fixed-quantity hot water supply than during normal hot water supply. .

Another object of the present invention is to provide an electric pot which improves the usability by changing the discharge amount per time according to the hot water supply amount set by the fixed hot water supply setting means.

[0008]

In order to achieve the above object, the present invention adopts the following configuration.

In the invention according to claim 1, an inner container for boiling water, a heating means for heating the inner container, an electric pump for supplying hot water of the inner container through a hot water supply passage, a normal hot water supply mode and a fixed amount. Mode switching means capable of switching the hot water supply mode; pump output changing means for reducing the discharge amount per hour during fixed quantity hot water supply compared to normal hot water supply; and control means for outputting a control signal to the pump output changing means during constant quantity hot water supply With extra hot water supply due to overrun at the end of hot water supply
To reduce the hot water supply error with respect to the set hot water supply amount .

[0010] With this configuration, when a fixed amount of hot water is supplied, even if the hot water is held by holding the container in the hand, or if the container is placed and hot water is supplied, the bounce and scattering from the container are reduced, and an extra run is caused by overrun at the end of the hot water supply. The hot water supply amount is reduced to reduce the hot water supply error with respect to the set hot water supply amount.

In the invention according to claim 2, an inner container for boiling water, a heating means for heating the inner container, an electric pump for supplying the hot water of the inner container through a hot water supply passage, a normal hot water supply mode and a fixed amount. Mode switching means capable of switching hot water supply modes, pump output changing means for making the discharge amount per discharge end time less than the discharge amount at the beginning of discharge during fixed quantity hot water supply, and a control signal output to the pump output changing means during constant quantity hot water supply With a control means for
The extra hot water supply amount is reduced, and the hot water supply error with respect to the set hot water supply amount
Configuration to reduce .

[0012] With this structure, even when a fixed amount of hot water is supplied and the hot water is placed on the container, bounce and splatter from the container are reduced, and the amount of hot water in the container is usually large at the end of hot water supply to the container. Although it is easy for bounces and splashes to occur, it is possible to effectively reduce bounces and splashes from the container at the end of hot water supply, and to reduce the excess hot water supply due to overrun at the end of hot water supply to the set hot water supply amount. Reduce hot water supply error.

In the invention according to claim 3, an inner container for boiling water, a heating means for heating the inner container, an electric pump for supplying the hot water of the inner container through a hot water supply passage, a normal hot water supply mode and a fixed amount. A mode switching means capable of switching hot water supply modes, a pump output changing means for gradually reducing the discharge amount per time from the initial discharge to the end of discharge during fixed quantity hot water supply, and control means for outputting a control signal to the pump output changing means during constant quantity hot water supply It is equipped with and extra by overrun at the end of hot water supply
The amount of hot water supplied is reduced and the error of hot water supply to the set amount of hot water is reduced.
Configuration that.

With this configuration, when a fixed amount of hot water is supplied, even if a container is placed and hot water is supplied, bounce and scattering from the container are reduced, and even when a small container such as a coffee cup is held in the hand and hot water is supplied, the amount of hot water increases. Since the discharge amount decreases, the rebound and scattering from the container can be reduced, you can hold the cup with confidence until the end, and further reduce the extra hot water supply due to overrun at the end of hot water supply Reduce hot water supply error.

In the invention according to claim 4, an inner container for boiling water, heating means for heating the inner container, an electric pump for supplying hot water of the inner container through a hot water supply passage, a normal hot water supply mode and a fixed amount. A mode switching means that can switch the hot water supply mode and a pump output change that makes the discharge amount per initial time of discharge in the regular hot water supply mode the discharge amount of the normal hot water supply mode, stabilizes the discharge amount in the middle period, and further reduces it in the final stage Means and a control means for outputting a control signal to the pump output changing means at the time of constant hot water supply.
Hot water supply to the set hot water supply by reducing the extra hot water supply
Configuration that reduces the error .

[0016] With this configuration, when a fixed amount of hot water is supplied, even if a container is placed and hot water is supplied, bounce and scattering from the container are reduced, and more hot water is supplied in a short time in the initial stage of hot water supply.
In addition to reducing the discharge amount in the middle period, by making the middle period longer than the initial and final stages so that the fluctuation of the molten metal surface can be stabilized, the rebound and splatter at that period are reduced and further reduced in the final stage. By doing so, the rebound and scattering at that time are also reduced. In other words, the hot water supply time is shortened, the rebound and splattering from the container after the middle period is reduced, and even when holding a small container such as a coffee cup in the hand to supply hot water, it is possible to hold the cup to the end with confidence. The excess hot water supply amount due to overrun at the end of hot water supply is reduced, and the hot water supply error with respect to the set hot water supply amount is reduced.

In the invention according to claim 5, an inner container for boiling water, a heating means for heating the inner container, an electric pump for supplying the hot water of the inner container through a hot water supply passage, a normal hot water supply mode and a fixed amount. A mode switching unit that can switch the hot water supply mode, and a pump output that reduces the discharge amount per initial time of discharge during regular hot water supply from the discharge amount in the normal hot water supply mode, and sets the discharge amount in the normal hot water supply mode in the intermediate period A change means and a control means for outputting a control signal to the pump output changing means at the time of constant hot water supply are provided .
Reduce the amount of extra hot water supplied by burran to meet the set amount of hot water
A configuration that reduces hot water supply error .

With this configuration, the bounce and splatter in the initial and final stages of hot water supply, which are particularly prone to bounce and splatter, are reduced, and hot water is supplied all at once at an intermediate time when bounce and splatter are relatively small, and the total hot water supply time is shortened. That is, the hot water supply time is shortened, the rebound and splattering at the beginning and the end of the hot water supply are reduced, and even when holding a small container such as a coffee cup in the hand to hot water, you can hold the cup to the end without anxiety. The excess hot water supply amount due to overrun at the end is reduced, and the hot water supply error with respect to the set hot water supply amount is reduced.

In the invention according to claim 6, an inner container for boiling water, a heating means for heating the inner container, an electric pump for supplying the hot water of the inner container through a hot water supply passage, a normal hot water supply mode and a fixed amount. A mode switching means capable of switching the hot water supply mode, a fixed hot water supply setting means for setting the hot water supply amount in the fixed hot water supply mode to a predetermined amount, and a discharge amount per hour according to the hot water supply amount set by the fixed hot water supply setting means. And a control means for outputting a control signal to the pump output changing means at the time of constant hot water supply.
Amount changes according to the amount of hot water set by the hot water supply setting means
The discharge amount per hour is larger as the hot water supply setting amount is larger.
A configuration for optimally setting the discharge amount per hour depending on the hot water supply amount .

With this configuration, when hot water is supplied to a small container such as a cup, the hot water supply time is originally short. Therefore, when water is supplied to such a container, the amount of discharge per hour is reduced to prevent the water from bouncing or splashing. When supplying hot water to a large container such as a pan, since the container is large, it does not bounce or scatter outside the container, and the amount of discharge per hour is large for supplying hot water to such a container. As a result, the hot water supply time can be shortened, and the discharge amount per hour can be optimally set depending on whether the hot water supply amount is large, medium, or small.

In the invention according to claim 7, the discharge amount control by the pump output changing means is performed by controlling the drive voltage or the drive interval of the electric pump. With this configuration, the existing output conversion device can be used, and the control device can be manufactured at low cost.

[0022]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Some preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

First Embodiment FIGS. 1 to 4 show an electric pot according to the present invention, and a first embodiment is shown in a flow chart of FIG.

As shown in FIGS. 1 to 3, this electric pot 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 for heating. An electric heater 4 as a heating means, a hot water supply passage 5 for supplying the 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.

The container body 1 comprises an outer case 7 made of synthetic resin which constitutes an outer peripheral surface, and the inner container 3 which constitutes 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 that forms a bottom surface.

The inner container 3 is composed of a vacuum double structure in which a vacuum space is formed between an inner cylinder 10 made of stainless steel and having a cylindrical shape with a bottom and an outer cylinder 11 made of stainless steel. An electric heater 4 such as a mica heater having a heating element held on a mica plate is attached. The upper end of the inner container 3 is subjected to a drawing process for suppressing heat dissipation. Reference numeral 12 is a hot water temperature sensor that is in contact with the center of the bottom of the inner container 3 and acts as hot water temperature detecting means for detecting the hot water temperature in the inner container 3. Reference numeral 13 is a full water indicating the full water level of the inner container 3. It is a scale.

The lid 2 is composed of a synthetic resin upper plate 14 and a synthetic resin lower plate 15 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 by a hinge pin 17 so as to be openable / closable and detachable.

Further, hot water can be supplied to the lid body 2 through the hot water supply passage 5 even when the power source is not connected,
An air pump 18 driven by manual operation is provided. 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. By pressing a pressing plate 20, pressurized air is contained in the inner container. 3, the hot water in the inner container 3 is pushed out to the outside through the hot water supply passage 5 by the pressure of the pressurized air. Reference numeral 21 is a steam discharge passage, and 22 is a fall stop water valve disposed in the middle of the steam discharge passage 21.

A metal cover member 23 is fixed to the lower plate 15 of the lid body 2.
The outer peripheral edge of the seal packing 24 is pressed against the upper end opening of the inner cylinder 10 of the inner container 3 when the lid 2 is closed.
Is provided.

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, the full water level scale 1 in the inner container 3
The straight pipe portion 5a located below 3 is provided with a flow rate sensor 25 which functions as a flow rate measuring means for measuring the flow rate of hot water passing through the hot water supply passage 5.

The flow sensor 25 is a transparent glass tube 2.
6 and the rotating body 2 arranged in the transparent glass tube 26.
7 and an optical sensor 28 including a light emitting element 28a and a light receiving element 28b for measuring the number of rotations of the rotating body 27. However, in the present invention, the sensor for measuring the flow rate is not limited to the optical sensor type sensor described here, and for example, Karman vortex type, water turbine type, electric pump rotation type, multi-point passing measurement type, etc. good.

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

The operation panel section 35 is shown in FIGS.
As shown in FIG. 5, a hot water supply switch 38 for supplying hot water by the electric pump 6, a lock release / mode changeover switch 39 for switching between the normal mode and the fixed amount mode and having an electric lock mechanism, and boiling and heat retention. A boiling / warm selection switch 40 for switching, a sleep timer switch 41 for setting the time when hot water is available in the pot when waking up in the morning, and setting change switches 42, 43 for changing and setting the hot water supply amount in the fixed amount mode A hot water supply indicator 44, a boiling indicator 45, a heat retention indicator 46, and a liquid crystal display 47 are provided.

FIG. 4 is a block diagram showing a configuration of a control system in the electric pot according to the present embodiment. The microcomputer unit (hereinafter, referred to as a microcomputer) 50 constituting the control means has a hot water temperature sensor 12, The flow sensor 25, the setting change switches 42 and 43 for changing and setting the hot water supply amount in the fixed amount mode, and the lock release mode having the electric lock mechanism for switching between the normal hot water supply mode and the fixed amount hot water supply mode. Signals from the switches such as the changeover switch 39 or the hot water supply switch 38 are manually input to perform various calculation processes, and the results are output to the electric heater 4 and the liquid crystal display device 47 as control signals.
The electric power is output to the electric pump 6 via the pump output changing means 51, the electric pump 6 is drive-controlled according to the set pump output, and hot water is supplied according to a predetermined discharge amount. Further, the microcomputer 50 also has a function as a fixed hot water supply control means for controlling the drive of the electric pump 6 so that hot water is supplied by the set hot water supply amount set by the setting change switches 42 and 43 which function as fixed hot water supply setting means. Have

As the pump output changing means 51, a well-known drive voltage control means for changing the pump output by variably controlling the magnitude of the voltage for driving the pump, and a pump using a triac as a switching element are used. It is possible to use known drive interval control means for changing the pump output by variably controlling the phase of the driving voltage, or known pulse control means for changing the pump output by variably controlling the on / off time of the pulse signal. it can.

Next, with reference to the flow chart shown in FIG. 5, the discharge amount control at the time of constant quantity hot water supply in the electric pot of the present invention will be described.

The flow chart shown in FIG. 5 corresponds to claim 1. When the electric pot is electrically connected, the setting change switches 42 and 4 are set in step S1.
The set value A set by 3 is read by the microcomputer 50, and the set value A is displayed on the liquid crystal display device 47. In step S2, it is determined whether or not the set value is changed, and in the case of an affirmative determination that the set value has been changed, the set value is read again in step S1, and in the case of a negative determination that has not been changed, the process proceeds to step S3. Then, the presence / absence of ON operation of the hot water supply switch 38 is determined. Here, if the determination is negative when the hot water supply switch 38 has not been turned on, the process returns to step S1, but if the determination is positive, the process proceeds to step S4 and the hot water supply mode is determined.

If the fixed hot water supply mode is not selected by the lock release / mode switch 39, the process returns to step S1.
Go to 5. In step S5, the control unit 50 receives the output signal of the pump output changing unit 51 that changes the output signal to the electric pump 6, and the electric pump 6 is driven by 80%. Then, quantitative hot water supply is started through the hot water supply passage 5, and hot water flows through the hot water supply passage 5, so that the flow rate sensor 25
The number of rotations of the rotating body 27 is measured from the number of times the optical sensor 28 is shielded by the rotating body 27. The number of rotations is the hot water supply passage 5
Is converted into the flow rate Q of the hot water flowing through and is input to the microcomputer 50 in step S6, and the liquid crystal display device 4
It is displayed by subtracting the hot water supply amount from the set value A displayed in 7.

In step S7, the flow rate Q measured by the flow rate sensor 25 is compared with the set value A, and if it is determined that Q ≧ A is not satisfied, the process returns to step S1 again and the electric pump 6 is operated at 80%. The driving is continued, but when the amount of hot water supply determined to be Q ≧ A reaches the set value, the process proceeds to step S8, the driving of the electric pump 6 is stopped, and the liquid crystal display device 47 is set in step S9. When the value A is displayed as 0, the completion of hot water supply is displayed.

A hot water supply control pattern according to this flowchart is shown in FIG. Although this embodiment has been described on the assumption that the electric pump 6 is driven by 80%, the essential point is 1
Any pump drive may be used as long as the discharge amount per unit time is smaller than that in the normal hot water supply mode in which the drive is performed at 00%. That is, in the normal hot water supply mode, the electric pump 6 is always driven by 100%, whereas as described above, by performing the pump driving lower than that in the normal hot water supply mode, the hot water supply time becomes longer, but is particularly small. It is possible to improve usability when hot water is supplied to the container.

Second Embodiment FIG. 6 shows a flow chart of quantitative hot water supply control in an electric pot according to a second embodiment of the present invention. This second embodiment corresponds to claim 2, and the amount of discharge per unit time of the end of discharge is made smaller than the amount of discharge at the initial stage of discharge. Other configurations are the same as those of the first embodiment. The description is omitted because it is similar to that of the embodiment.

That is, when the electric pots are electrically connected, the setting change switches 42 and 43 are set in step S1.
The setting value A set by is read by the microcomputer 50, and the setting value A is displayed on the liquid crystal display device 47. In step S2, it is determined whether or not the set value is changed, and in the case of an affirmative determination that the set value has been changed, the set value is read again in step S1, and in the case of a negative determination that has not been changed, the process proceeds to step S3. Then, the presence / absence of ON operation of the hot water supply switch 38 is determined. Here, if the determination is negative when the hot water supply switch 38 has not been turned on, the process returns to step S1, but if the determination is positive, the process proceeds to step S4 and the hot water supply mode is determined.

If the fixed amount hot water supply mode is not selected by the lock release / mode changeover switch 39, the process returns to step S1. If the determination is affirmative, the process proceeds to step S1.
Go to 5. In step S5, the control unit 50 receives the output signal of the pump output changing unit 51 that changes the output signal to the electric pump 6, and the electric pump 6 is driven at 100%. Then, quantitative hot water supply is started through the hot water supply passage 5, and hot water flows through the hot water supply passage 5, so that the flow rate sensor 2
The number of rotations of the rotator 27 is measured from the number of times the optical sensor 28 is shielded by the rotator 27 of No. 5. The rotation speed is converted into the flow rate Q of the hot water flowing through the hot water supply passage 5, is input to the microcomputer 50 in step S6, and is displayed by subtracting the hot water supply amount from the set value A displayed on the liquid crystal display device 47. It

In step S7, the flow rate Q measured by the flow rate sensor 25 is compared with 80% of the set value A, and when it is determined that Q ≧ 0.8 × A is not satisfied, the process returns to step S1. 100 by return electric pump 6
% Driving is continuously performed, but if it is affirmatively determined that Q ≧ 0.8 × A, the process proceeds to step S8 and the control means 5
When the output signal of the pump output changing means 51 that changes the output signal to the electric pump 6 by 0 is received, the electric pump 6 is driven at 70% with a reduced discharge amount per hour. Then, again in step S9, the flow rate Q measured by the flow rate sensor 25 is measured by the microcomputer 50, and step S1
At 0, the flow rate Q is compared with the set value A, and if it is determined that Q ≧ A is not satisfied here, 70% driving by the electric pump is continued, but a positive determination is made that Q ≧ A. If so, the process proceeds to step S11, the driving of the electric pump 6 is stopped, and the set value A is displayed on the liquid crystal display device 47 at 0 in step S12 to indicate the completion of hot water supply.

A hot water supply control pattern according to this flowchart is shown in FIG. 11 (b). In this embodiment, the electric pump 6 is driven 100% from the beginning to the middle and is driven 70% in the final stage, but the point is that the discharge amount per unit time in the final stage of discharge is smaller than the initial discharge amount. Any pump drive may be used as long as it is in a driving state. That is, as described above, by making the discharge amount per time in the final stage of discharge smaller than the discharge amount at the initial stage of discharge, even when a conventional small cup such as a coffee cup is held in the hand to supply hot water, rebound or splatter may occur. The amount of rattling can be effectively reduced, and the usability at the time of hot water supply can be improved.

Third Embodiment FIG. 7 shows a flow chart of quantitative hot water supply control in an electric pot according to a third embodiment of the present invention. This third embodiment corresponds to claim 3, and is configured such that the discharge amount per time is gradually reduced from the initial discharge to the end of discharge, and other configurations are the same as those of the first embodiment. The description is omitted because it is the same as.

That is, when the electric pots are electrically connected, the setting change switches 42 and 43 are set in step S1.
The setting value A set by is read by the microcomputer 50, and the setting value A is displayed on the liquid crystal display device 47. In step S2, it is determined whether or not the set value is changed, and in the case of an affirmative determination that the set value has been changed, the set value is read again in step S1, and in the case of a negative determination that has not been changed, the process proceeds to step S3. Then, the presence / absence of ON operation of the hot water supply switch 38 is determined. Here, if the determination is negative when the hot water supply switch 38 has not been turned on, the process returns to step S1, but if the determination is positive, the process proceeds to step S4 and the hot water supply mode is determined.

If the fixed amount hot water supply mode is not selected by the lock release / mode changeover switch 39, the process returns to step S1. If the determination is affirmative, the process proceeds to step S1.
Go to 5. In step S5, the control unit 50 receives the output signal of the pump output changing unit 51 that changes the output signal to the electric pump 6, and the electric pump 6 is driven at 100%. Then, quantitative hot water supply is started through the hot water supply passage 5, and hot water flows through the hot water supply passage 5, so that the flow rate sensor 2
The number of rotations of the rotator 27 is measured from the number of times the optical sensor 28 is shielded by the rotator 27 of No. 5. The rotation speed is converted into the flow rate Q of the hot water flowing through the hot water supply passage 5, is input to the microcomputer 50 in step S6, and is displayed by subtracting the hot water supply amount from the set value A displayed on the liquid crystal display device 47. It

In step S7, the flow rate Q measured by the flow rate sensor 25 is compared with 20% of the set value A, and when it is determined that Q ≧ 0.2 × A is not satisfied, the process returns to step S1. 100 by return electric pump 6
% Drive continues, but if a positive determination is made that Q ≧ 0.2 × A, the process proceeds to step S8, in which the electric pump 6 receives the output signal of the pump output changing means 51 and the discharge amount per hour. The 90% driving is performed. The flow rate Q measured by the flow rate sensor 25 is measured by the microcomputer 50 in step S9, and the flow rate Q measured by the flow rate sensor 25 is compared with 40% of the set value A in step S10, where Q ≧ 0. If it is determined that the value is not 4 × A, the electric pump 6 causes 9
The 0% drive is continued, but if an affirmative decision is made that Q ≧ 0.4 × A, then the processing advances to step S11, in which the electric pump 6 receives the output signal of the pump output changing means 51 and the discharge amount per hour. 80% driving is performed. The flow rate Q measured by the flow rate sensor 25 is measured by the microcomputer 50 in step S12, and the flow rate Q measured by the flow rate sensor 25 is compared with 60% of the set value A in step S13, where Q ≧ 0. .6 x A
If it is determined that it is not, 80% driving by the electric pump 6 is further continued, but if a positive determination is made that Q ≧ 0.6 × A, the process proceeds to step S14, and pump output changing means 51 The electric pump 6 is driven by 70% with a reduced discharge amount per hour.

Then, the flow rate Q measured by the flow rate sensor 25 is measured by the microcomputer 50 in step S15, and the flow rate Q measured by the flow rate sensor 25 is compared with 80% of the set value A in step S16.
If it is determined that Q ≧ 0.8 × A is not satisfied, 70% driving by the electric pump 6 is further continued, but Q ≧
If a positive determination is made that 0.8 × A, step S
Proceeding to 17, the electric pump 6 receives the output signal of the pump output changing means 51 and is driven at 60% with a reduced discharge amount per hour. The flow rate Q measured by the flow rate sensor 25 is measured by the microcomputer 50 in step S18, and the flow rate Q measured by the flow rate sensor 25 is compared with the set value A in step S19, and it is determined that Q ≧ A is not satisfied. If this happens, the electric pump 6
60% drive by the electric pump 6 is continued, but when it is determined that Q ≧ A, the process proceeds to step S20.
Of the liquid crystal display device 4 is stopped in step S21.
When the set value A is displayed as 0 in 7, the completion of hot water supply is displayed.

A hot water supply control pattern according to this flowchart is shown in FIG. In this embodiment, the output of the electric pump 6 is gradually reduced by a predetermined value from the beginning to the end, but the point is that if the discharge amount per time is gradually reduced from the initial discharge to the end of the discharge, the pump will have any value. It may be driven. That is, by gradually reducing the discharge amount per time from the initial discharge to the end of discharge as described above, there is a case where bounce or splatter may occur even when hot water is conventionally held by holding a particularly small container such as a coffee cup in the hand. It can be effectively reduced, and the cup can be held with confidence until the end, which improves the ease of use during hot water supply.

Fourth Embodiment FIG. 8 shows a flow chart of a quantitative hot water supply control in an electric pot according to a fourth embodiment of the present invention. This fourth embodiment corresponds to claim 4, in which the discharge amount per unit time in the initial period of discharge is set as the discharge amount in the normal hot water supply mode, the discharge amount is reduced and stabilized in the intermediate period, and further reduced in the final stage. Other configurations are as follows:
The description is omitted because it is the same as in the embodiment.

That is, when the electric pots are electrically connected, the setting change switches 42 and 43 are set in step S1.
The set value A set by is read by the microcomputer 50, and the set value A is displayed on the liquid crystal display device 47. In step S2, it is determined whether or not the set value is changed, and in the case of an affirmative determination that the set value has been changed, the set value is read again in step S1, and in the case of a negative determination that has not been changed, the process proceeds to step S3. Go forward, hot water switch 3
The presence or absence of the ON operation of 8 is determined. Here, if the determination is negative when the hot water supply switch 38 has not been turned on, the process returns to step S1, but if the determination is positive, the process proceeds to step S4 and the hot water supply mode is determined.

If the fixed hot water supply mode has not been selected by the lock release / mode changeover switch 39, the process returns to step S1;
Go to 5. In step S5, the control unit 50 receives the output signal of the pump output changing unit 51 that changes the output signal to the electric pump 6, and the electric pump 6 is driven at 100%. Then, quantitative hot water supply is started through the hot water supply passage 5, and hot water flows through the hot water supply passage 5, so that the flow rate sensor 2
The number of rotations of the rotator 27 is measured from the number of times the optical sensor 28 is shielded by the rotator 27 of No. 5. The rotation speed is converted into the flow rate Q of the hot water flowing through the hot water supply passage 5, is input to the microcomputer 50 in step S6, and is displayed by subtracting the hot water supply amount from the set value A displayed on the liquid crystal display device 47. It

In step S7, the flow rate Q measured by the flow rate sensor 25 is compared with 20% of the set value A, and when it is determined that Q ≧ 0.2 × A is not satisfied, the process returns to step S1. 100 by return electric pump 6
% Drive continues, but if a positive determination is made that Q ≧ 0.2 × A, the process proceeds to step S8, in which the electric pump 6 receives the output signal of the pump output changing means 51 and the discharge amount per hour. 80% driving is performed. The flow rate Q measured by the flow rate sensor 25 is measured by the microcomputer 50 in step S9, and the flow rate Q measured by the flow rate sensor 25 is compared with 80% of the set value A in step S10, where Q ≧ 0. If it is determined that the value is not 8 × A, the electric pump 6 causes
The 0% drive is continued, but if an affirmative determination is made that Q ≧ 0.8 × A, the process proceeds to step S11, in which the electric pump 6 receives the output signal of the pump output changing means 51 and the discharge amount per hour. 60% driving is performed. Then, the flow rate Q measured by the flow rate sensor 25 is measured by the microcomputer 50 in step S12, and the flow rate Q measured by the flow rate sensor 25 is compared with the set value A in step S13, and it is determined that Q ≧ A is not satisfied. If so, 60% drive by the electric pump 6 is continued, but if a positive determination is made that Q ≧ A, the process proceeds to step S14, the drive of the electric pump 6 is stopped, and further at step S15. The completion of hot water supply is indicated by displaying the set value A of 0 on the liquid crystal display device 47.

A hot water supply control pattern according to this flowchart is shown in FIG. 11 (d). Although this embodiment has been described by reducing the output of the electric pump 6 by a predetermined value in the middle and in the final stage, both predetermined values may be any values, that is, the discharge amount per time in the initial stage of discharge is usually the hot water supply. The discharge amount of the mode is set, and in the middle period, the period is set longer than the period of the initial stage and the end stage so that the molten metal surface is stable, and the discharge amount is reduced and stabilized. Is also good. That is, as described above, the discharge amount per time in the initial discharge is set as the discharge amount in the normal hot water supply mode, and the discharge amount is reduced and stabilized in the intermediate period, and further reduced in the final stage, so that a particularly small container such as a conventional coffee cup can be used. Even in the case of holding hot water in a hand, the rebound and splatter in the middle period are reduced, so that the rebound and splatter in the final stage can be further reduced.

Fifth Embodiment FIG. 9 shows a flow chart of quantitative hot water supply control in an electric pot according to a fifth embodiment of the present invention. The fifth embodiment corresponds to claim 5, in which the discharge amount per time in the initial stage of discharge is set to be smaller than the discharge amount in the normal hot water supply mode, and the discharge amount in the normal hot water supply mode is set in the intermediate period,
It is designed to be reduced in the final stage, other configurations are
The description is omitted because it is the same as in the first embodiment.

That is, when the electric pots are electrically connected, the setting change switches 42 and 43 are set in step S1.
The set value A set by is read by the microcomputer 50, and the set value A is displayed on the liquid crystal display device 47. In step S2, it is determined whether or not the set value is changed, and in the case of an affirmative determination that the set value has been changed, the set value is read again in step S1, and in the case of a negative determination that has not been changed, the process proceeds to step S3. Go forward, hot water switch 3
The presence or absence of the ON operation of 8 is determined. Here, if the determination is negative when the hot water supply switch 38 has not been turned on, the process returns to step S1, but if the determination is positive, the process proceeds to step S4 and the hot water supply mode is determined.

If the fixed hot water supply mode is not selected by the lock release / mode changeover switch 39, the process returns to step S1. If the determination is affirmative, the process returns to step S1.
Go to 5. In step S5, the control unit 50 receives the output signal of the pump output changing unit 51 that changes the output signal to the electric pump 6, and the electric pump 6 is driven by 70%. Then, quantitative hot water supply is started through the hot water supply passage 5, and hot water flows through the hot water supply passage 5, so that the flow rate sensor 25
The number of rotations of the rotating body 27 is measured from the number of times the optical sensor 28 is shielded by the rotating body 27. The number of rotations is the hot water supply passage 5
Is converted into the flow rate Q of the hot water flowing through and is input to the microcomputer 50 in step S6, and the liquid crystal display device 4
It is displayed by subtracting the hot water supply amount from the set value A displayed in 7.

In step S7, the flow rate Q measured by the flow rate sensor 25 is compared with 10% of the set value A, and if it is determined that Q ≧ 0.1 × A is not satisfied, the process returns to step S1. 70% by return electric pump 6
Although the drive is continuously performed, when the positive determination is made that Q ≧ 0.1 × A, the process proceeds to step S8, and the electric pump 6 receives the output signal of the pump output changing means 51 and determines the discharge amount per hour. Increased 100% drive is performed. The flow rate Q measured by the flow rate sensor 25 is measured by the microcomputer 50 in step S9, and the flow rate Q measured by the flow rate sensor 25 is compared with 80% of the set value A in step S10, where Q ≧ 0. If it is determined that the value is not 8 × A, the electric pump 6 further sets 1
Although the 00% drive is continued, if the affirmative determination is made that Q ≧ 0.8 × A, the process proceeds to step S11, in which the electric pump 6 receives the output signal of the pump output changing means 51 and the discharge amount per hour. 70% driving is performed. Then, the flow rate Q measured by the flow rate sensor 25 in step S12 is measured by the microcomputer 50, and the flow rate Q is measured in step S13.
The flow rate Q measured by the flow rate sensor 25 and the set value A are compared with each other, and if it is determined that Q ≧ A is not satisfied, 70% driving by the electric pump 6 is continued, but Q ≧ When a positive determination is made as A, the process proceeds to step S14, the driving of the electric pump 6 is stopped, and the set value A is displayed on the liquid crystal display device 47 at 0 in step S15 to indicate the completion of hot water supply.

A hot water supply control pattern according to this flowchart is shown in FIG. Although this embodiment has been described by reducing the output of the electric pump 6 by a predetermined value in the initial stage and the final stage, both predetermined values may be any values, and the point is that the discharge amount per time in the initial period of discharge is normally the hot water supply. The discharge amount in the normal hot water supply mode may be set to be smaller than the discharge amount in the mode, and may be any pump drive as long as the discharge amount is decreased in the final stage. That is, as described above, the discharge amount per initial time of discharge is made smaller than the discharge amount in the normal hot water supply mode, and the discharge amount in the normal hot water supply mode is set in the middle period, and the discharge amount is decreased in the final stage, so that a particularly small container such as a conventional coffee cup Even when holding hot water in the hand, it is especially prone to bounce and splatter.Reduce bounce and splatter in the early and final stages of hot water supply, and quickly supply water at an intermediate time when bounce and splatter are relatively small, shortening the overall hot water supply time. Therefore, the hot water can be supplied without anxiety, and the usability can be further improved.

Sixth Embodiment FIG. 10 shows a flow chart of quantitative hot water supply control in an electric pot according to a sixth embodiment of the present invention. This sixth embodiment corresponds to claims 6 and 7, and
The discharge amount per time, which changes according to the hot water supply amount set by the fixed hot water supply setting means, is set to increase as the hot water supply set amount increases, and other configurations are the same as those in the first embodiment. Therefore, the description is omitted.

That is, when the electric pot is electrically connected, the setting change switches 42 and 43 are set in step S1.
The setting value A set by is read by the microcomputer 50, and the setting value A is displayed on the liquid crystal display device 47. In step S2, it is determined whether or not the set value is changed, and in the case of an affirmative determination that the set value has been changed, the set value is read again in step S1, and in the case of a negative determination that has not been changed, the process proceeds to step S3. Then, the presence / absence of ON operation of the hot water supply switch 38 is determined. Here, if the determination is negative when the hot water supply switch 38 has not been turned on, the process returns to step S1, but if the determination is positive, the process proceeds to step S4 and the hot water supply mode is determined.

If the fixed amount hot water supply mode is not selected by the lock release / mode changeover switch 39, the process returns to step S1. If the determination is affirmative, the process proceeds to step S1.
Go to 5. In step S5, a determination is made based on the set value A set in step S1 or step S2. First, it is determined whether or not the set value A is 0 to 200 ml, and in the case of a negative determination, step S11. Then, it is determined whether the set value A is 200 to 400 ml, and if the determination is negative, the process proceeds to step S13, and is divided into three stages.

When the set value A is 0 to 200 ml and the positive determination is made in step S5, the process proceeds to step S6 and the output signal of the pump output changing means 51 for changing the output signal to the electric pump 6 by the control means 50. In response, the electric pump 6 has a small output corresponding to the small set value A 6
0% drive is performed and the set value A is 200-400 ml
If the affirmative determination is made in step S11, the process proceeds to step S12, in which the electric pump 6 receives the output signal of the pump output changing means 51, and the electric pump 6 is driven at a medium output of 80% in accordance with the medium set value A. Is performed, and the set value A is 40
When the negative determination is made in step S11, which is 0 ml or more, the process proceeds to step S13, in which the electric pump 6 receives the output signal of the pump output changing means 51 and is driven at 100% which is the maximum output in accordance with the set value A. .

When the pump output is selected according to the set value A set by the setting change switches 42 and 43 as described above, the constant quantity hot water supply is started through the hot water supply passage 5 and the hot water flows through the hot water supply passage 5. The number of rotations of the rotating body 27 is measured from the number of times the optical sensor 28 blocks light by the rotating body 27 of the flow rate sensor 25. The rotation speed is converted into the flow rate Q of hot water flowing through the hot water supply passage 5, is input to the microcomputer 50 in step S7, and is displayed by subtracting the hot water supply amount from the set value A displayed on the liquid crystal display device 47. It

In step S8, the flow rate Q measured by the flow rate sensor 25 is compared with the set value A. If it is determined that Q ≧ A is not satisfied, the electric pump 6 with the output selected at that time is used. Although the driving is continued, if it is determined that Q ≧ A, the process proceeds to step S9, the driving of the electric pump 6 is stopped, and the set value A is displayed on the liquid crystal display device 47 at 0 in step S10. Displays the completion of hot water supply.

The conceptual diagram is shown in FIG. In this embodiment, the set value A is divided into three stages and the respective values are further specified and explained, but the point is that the discharge amount per time that changes according to the hot water supply amount set by the fixed hot water supply setting means is supplied. It goes without saying that various levels and set values can be selected by increasing the set amount. That is, as described above, by increasing the discharge amount per time that changes according to the hot water supply amount set by the constant hot water supply setting means as the hot water supply set amount increases, it is safe to supply hot water to a small container such as a cup. When giving priority to slow water supply, and when supplying water to a large container such as a pan, priority can be given to hot water supply for a short time to set the optimum discharge rate per hour depending on the amount of hot water supply, medium, or small. Therefore, the hot water can be supplied without anxiety and the usability can be further improved.

As shown in FIG. 4, a signal from the hot water temperature sensor 12 is also incorporated in the control device 50, and the signal from the hot water temperature sensor 12 is used as a correction element of the output changing means 51 of the present invention. Further, the output of the electric pump 6 may be changed. That is, when the temperature of the hot water is high, even a small amount of hot water may cause burns, and even if you do not get burned, you may be surprised to drop the cup when holding hot water (this risk Is also present in the first to sixth embodiments of the present invention.) Therefore, when hot water is used, the pump output is reduced, and when the hot water temperature is low, the pump output is reduced because such danger is low. It goes without saying that the hot water supply is increased and the pump output is corrected by the hot water temperature in the normal hot water supply mode or in the present invention.

Although the present invention has been described with respect to the contents in the inner container 3 for hot water, it can be applied to contents such as cold water.

The invention of the present application is not limited to the configuration of each of the above-described embodiments, and it goes without saying that the design can be appropriately changed without departing from the gist of the invention.

[0072]

According to the first aspect of the present invention, when the fixed amount of hot water is supplied, the discharge amount per hour is made smaller than that in the normal hot water supply. It is possible to reduce the bounce and splash from the container even when the hot water is placed and to reduce the extra hot water supply due to the overrun at the end of the hot water supply, thus reducing the hot water supply error with respect to the set hot water supply amount. it can.

According to the second aspect of the present invention, when the fixed amount of hot water is supplied, the discharge amount per unit time of the discharge end is set to be smaller than the discharge amount at the initial stage of discharge, so that even when the container is placed and hot water is supplied during the fixed amount of hot water, the bounce from the container It is possible to reduce splattering and splattering, and when you hold a small container such as a coffee cup in your hand to supply hot water, the amount of hot water is large at the end, so it tends to bounce and splatter. However, it is possible to reduce rebound and scattering from the container. Furthermore, since the excess hot water supply amount due to overrun at the end of hot water supply can be reduced, the hot water supply error with respect to the set hot water supply amount can be reduced.

According to the third aspect of the present invention, when the fixed amount of hot water is supplied, the discharge amount per time is gradually reduced from the initial discharge to the end of the discharge. In addition, even if you hold a small container such as a coffee cup in your hand to supply hot water, the amount of discharged water will decrease with the increase in the amount of hot water, so you can reduce the bounce and splatter from the container. You can have a cup up to. Furthermore, since the excess hot water supply amount due to overrun at the end of hot water supply can be reduced, the hot water supply error with respect to the set hot water supply amount can be reduced.

In the invention according to claim 4, the discharge amount per unit time in the initial period of discharge is set as the discharge amount in the normal hot water supply mode during the fixed amount hot water supply, the discharge amount is reduced and stabilized in the intermediate period, and further reduced in the final stage. Even when a fixed amount of hot water is placed and hot water is placed on the container, it is possible to reduce the bounce and splatter from the container, and it is possible to supply more hot water in a short time at the initial stage of hot water supply. In addition to reducing it, by making the intermediate period longer than the initial and final stages so that the shaking of the surface of the bath can be stabilized, it is possible to reduce rebound and splatter at that time, and by further reducing it in the final stage, Bounce and splatter in the final stage can also be efficiently reduced. In other words, the hot water supply time is shortened, the rebound and splattering from the container after the middle period is reduced, and even when holding a small container such as a coffee cup in the hand to supply hot water, it is possible to hold the cup to the end with confidence. Since the extra hot water supply amount due to overrun at the end of hot water supply can be reduced, the hot water supply error with respect to the set hot water supply amount can be reduced.

In the invention according to claim 5, the discharge amount per initial time of discharge is set to be smaller than the discharge amount in the normal hot water supply mode during the constant amount hot water supply, and is set to the discharge amount in the normal hot water supply mode during the intermediate period, and the discharge amount is decreased in the final stage. In particular, it is possible to reduce the bounce and splatter in the initial and final stages of hot water supply, which is particularly prone to bounce and splatter, and to quickly supply the hot water at an intermediate time when the bounce and splatter are relatively small, and to shorten the total hot water supply time. That is, it is possible to shorten the hot water supply time and reduce the bounce and splatter at the beginning and end of the hot water supply, and even when holding a small container such as a coffee cup in the hand to supply hot water, it is safe to hold the cup to the end. it can. Furthermore, since the excess hot water supply amount due to overrun at the end of hot water supply can be reduced, the hot water supply error with respect to the set hot water supply amount can be reduced.

In the sixth aspect of the present invention, when a fixed amount of hot water is supplied, the discharge amount per time, which changes according to the amount of hot water supply set by the fixed amount of hot water supply setting means, is increased as the set amount of hot water is increased, so that a cup or the like is discharged. When hot water is supplied to a small container, the hot water supply time is originally short.For such hot water supply to a container, the amount of discharge per hour can be reduced to reduce rebound and splatter, and to provide a large container such as a pot. When hot water is supplied to a container, the size of the container is large so that it does not bounce or scatter out of the container.To supply hot water to such a container, shorten the hot water supply time by increasing the discharge rate per hour. As described above, it is possible to optimally set the discharge amount per hour depending on the amount of hot water supply, medium amount, and small amount, and it is possible to greatly improve the usability.

In the invention according to claim 7, the existing output conversion device can be used by controlling the drive voltage or the drive interval of the electric pump for the discharge amount control, and the control device can be manufactured easily and inexpensively. .

[Brief description of drawings]

FIG. 1 is an overall sectional view of an electric pot of the present invention.

FIG. 2 is a plan view of the electric pot of the present invention.

FIG. 3 is an enlarged view of an electric pot panel portion of the present invention.

FIG. 4 is a block diagram of a control system in the electric pot of the present invention.

FIG. 5 is a flow chart showing the contents of fixed hot water supply control in the electric pot according to the first embodiment of the present invention.

FIG. 6 is a flow chart showing the contents of fixed quantity hot water supply control in an electric pot according to a second embodiment of the present invention.

FIG. 7 is a flow chart showing the contents of fixed hot water supply control in the electric pot according to the third embodiment of the present invention.

FIG. 8 is a flowchart showing the contents of fixed hot water supply control in the electric pot according to the fourth embodiment of the present invention.

FIG. 9 is a flow chart showing the contents of quantitative hot water supply control in an electric pot according to a fifth embodiment of the present invention.

FIG. 10 is a flow chart showing the contents of fixed hot water supply control in an electric pot according to a sixth embodiment of the present invention.

FIG. 11 is a conceptual diagram of quantitative hot water supply control in the electric pot according to the first to sixth embodiments of the present invention.

[Explanation of symbols]

1 ... Container main body 2 ... Lid body 3 ... Inner container 4 ... Electric heater 5 ... Hot water supply passage 6 ... Electric pump A ... Set hot water supply amount Q ... Flow rate 12 ... Hot water temperature sensor 13 ... Full water level sensor 25 ... Flow rate sensor 28 ... Optical sensor 35 ... Operation panel section 38 ... Hot water supply switch 39 ... Lock release / mode change switch 42 ... Setting change switch 47 ... Liquid crystal display device 50 ...
Microcomputer 51 ... Pump output changing means

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Masami Segawa, 1006, Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (56) References JP-A-9-224832 (JP, A) JP-A-4-24 282110 (JP, A) Actual Kaihei 4-44829 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) A47J 27/21

Claims (7)

(57) [Claims] 1. An inner container for boiling water, heating means for heating the inner container, an electric pump for supplying hot water of the inner container through a hot water supply passage, and a normal hot water supply mode and a constant hot water supply mode can be switched. At the end of hot water supply, there are provided a mode switching means, a pump output changing means for reducing the discharge amount per hour during the constant hot water supply compared to the time for normal hot water supply, and a control means for outputting a control signal to the pump output changing means during the constant hot water supply. Oh
-To reduce the amount of extra hot water supplied by the bar run,
An electric pot characterized by reducing hot water supply error . 2. An inner container for boiling water, heating means for heating the inner container, an electric pump for supplying the hot water of the inner container through a hot water supply passage, and a normal hot water supply mode and a constant hot water supply mode can be switched. A mode switching unit, a pump output changing unit that reduces the amount of discharge per unit time of the end of discharge from the amount of discharge at the initial stage of discharge during fixed amount hot water supply, and a control unit that outputs a control signal to the pump output change unit during fixed amount hot water supply ,
It reduces the amount of extra hot water supply due to overrun at the end of hot water supply.
An electric pot characterized by reducing a hot water supply error with respect to a set hot water supply amount . 3. An inner container for boiling water, a heating means for heating the inner container, an electric pump for supplying hot water of the inner container through a hot water supply passage, and a normal hot water supply mode and a constant hot water supply mode can be switched. A mode switching unit, a pump output changing unit that gradually decreases the discharge amount per time from the initial discharge to the end of discharge during fixed amount hot water supply, and a control unit that outputs a control signal to the pump output changing unit during fixed amount hot water supply,
Reduces the excess hot water supply due to overrun at the end
An electric pot characterized by reducing hot water supply error relative to the amount of hot water . 4. An inner container for boiling water, a heating means for heating the inner container, an electric pump for supplying hot water of the inner container through a hot water supply passage, and a normal hot water supply mode and a constant hot water supply mode can be switched. The mode switching means, the discharge amount per unit time in the initial hot water discharge during the fixed amount hot water supply is the discharge amount in the normal hot water supply mode, and the discharge amount is stabilized during the intermediate period and further reduced in the final stage. The pump output changing means is provided with a control means for outputting a control signal, and an extra hot water supply amount due to overrun at the end of hot water supply is provided .
An electric pot characterized by reducing the hot water supply error with respect to the set hot water supply amount . 5. An inner container for boiling water, a heating means for heating the inner container, an electric pump for supplying hot water of the inner container through a hot water supply passage, and a normal hot water supply mode and a constant hot water supply mode can be switched. Mode switching means, pump output changing means for reducing the discharge amount per initial time of discharge during regular hot water supply from the discharge amount in the normal hot water supply mode, and the discharge amount for the normal hot water supply mode in the middle period, and decreasing it in the final stage, and constant hot water supply Control means for outputting a control signal to the pump output changing means at the time
An electric kettle, characterized in and this <br/> to reduce the hot water supply error for reducing the amount of hot water set hot water supply amount. 6. An inner container for boiling water, a heating means for heating the inner container, an electric pump for supplying hot water of the inner container through a hot water supply passage, and a normal hot water supply mode and a constant hot water supply mode can be switched. Mode switching means, fixed hot water supply setting means for setting the hot water supply amount in the fixed hot water supply mode to a predetermined amount,
Comprising a pump output changing means for changing the discharge amount per time according to the hot water supply amount set by the constant amount hot water supply setting means, and control means for outputting a control signal to the pump output changing means during quantification hot water, the quantitative Depending on the hot water supply setting means
Discharge per time that changes according to the hot water supply amount set by
The larger the set amount of hot water supply, the larger the amount.
An electric pot characterized by optimally setting the discharge amount per unit . 7. The discharge amount control by the pump output changing means is performed by controlling a driving voltage or a driving interval of the electric pump.
The described electric pot.