JPH0713611Y2 - Electric hot water storage container - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to various electric hot water storage containers such as an electric pot which heats a content liquid with a heater to keep the temperature as it is or after boiling it.

[0002]

2. Description of the Related Art Conventionally, this kind of electric hot water storage container performs a boiling operation and a heat retaining operation, and once the content liquid is below the heat retaining temperature due to water supply or water supply, the content liquid is once boiled by the boiling operation. The one in which the content liquid is switched to the post-warming operation to keep the content liquid at a predetermined temperature is widely used. Further, even during the heat retaining operation, the content liquid can be reboiled at any time by using the reboil key to be used.

In recent years, it has become multi-functional, for example, to set a timer for obtaining a boiling state at a predetermined point in time, and to set a descaling mode for prolonging the boiling time to remove descaling. . Among them, it has been proposed that when none of the keys is operated for a predetermined time or longer, it is determined that the householder is out of the house for a long time, and the heater is turned off for safety.

[0004]

[Problems to be Solved by the Invention] However, there is an electric hot water storage container of a type in which a manual pump is operated to pour the content liquid,
Only the pouring operation by the manual pump may be performed during the predetermined time.

[0005] rather than between the key operation in this case the predetermined time, in a state where electric kettle Ru is used, or person is waiting to be used have at home even though the heater is automatically There is an inconvenience that it is turned off.

Therefore, in order to solve this, the electric pot
Depending on whether or not there are people around,
Switch off automatically or keep it on
It is possible that

Particularly, the present invention is an electric hot water storage container such as an electric kettle.
The peculiar form of the container, that is, the spout part protrudes in front of the container
And that there is no boiling water on the spout side.
To make good use of the position of the operation surface for operation.
With, it is easy to detect the presence of people and
, The danger when people are not present, and the improper use when people are present.
It is an object of the present invention to provide an electric hot water storage container that can respond appropriately to stool .

[0008]

A solution for the present invention is to achieve the above problems, in an electric hot water storage vessel incubating the content liquid after it kept warm or kettle is heated by the heater, the presence of people in the near neighbor comprising a sensor for detecting, and control means sensor is adapted to turn off the heater when not continuously detected the presence of a person predetermined time, sensor
Is located on the side of the spout that is provided in front of the body
It is characterized in that it is provided on the operation surface for performing the boiling water operation .

[0009]

According to the above configuration of the present invention, the sensor is operated for a predetermined time.
When detecting the presence of a person inside, the control means turns on the heater.
Since it is left on, it is possible to perform operations such as pouring operation and mode setting before
Use the electric hot water storage container even if it is not done for the specified time.
There are people around the electric hot water storage container that can be used.
Indefinite time due to the person who is present while obtaining the safety guarantee by
To avoid any inconvenience, and keep the sensor for a specified time.
When the presence of a person is not detected, the control means
Turn off the power to keep people safe around the electric hot water storage container.
It is possible to prevent the danger of not being guaranteed.

In particular, the sensor ensures such safety.
On the side of the spout that is provided on the upper side of the body.
It is provided on the operation surface for placing a boiling water
On the installation side, the boiling point side of this and the boiling water operation are performed.
It is common for the operation surface to face the side where the user is.
Therefore, the probability that the sensor can detect a person is increased.
And the protrusion on the spout side in front of the body
Is easier to detect.

Therefore, it is easy to detect the presence of a person and
With a high detection probability, there is a danger when people are not present and people are present
The inconvenience of use can be dealt with accurately.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the electric pot of the present invention shown in the drawings will be described. As shown in FIG. 1, an inner case 2 having a heater 1 at the bottom is housed in an outer case 3. The container body 4 of the electric pot is formed. The outer case 3 and the inner container 2 are integrated at the upper end by the shoulder member 5, and at the lower end by a connecting metal fitting (not shown) and the bottom member 18.

An outer lid 7 is provided on the upper end of the body 4.
The outer lid 7 is removably supported by a shaft 6 on a bearing 9 provided at the rear portion of the shoulder member 5, and pivots about the shaft 6 to open and close the body 4.

In the outer lid 7, there is a bellows pump 11 which is pressed by a pressing plate 10 located at the center of the upper surface thereof,
A valve 36 is provided in the center of the valve 36 and is moved up and down in conjunction with the operation of the pressing plate 10.

The valve 36 is the discharge port 16 of the bellows lower plate 12.
And the air supply path 1 to the inner container 2 through which the discharge port 16 communicates
The branch hole 14 of the steam vent passage 15 that branches from the middle of 3 and communicates with the outside of the outer lid 7 is alternately closed in conjunction with the operation of the pressing plate 10.

Since the valve 36 normally closes the discharge port 16 when the pressing plate 10 is returned to the upward direction, the inside of the inner container 2 is communicated to the outside by the air supply passage 13, the branch hole 14, and the steam vent passage 15. Liquid 42 that is in a state of being boiled or kept warm
The steam generated from the inside of the inner container 2 does not rise in pressure through the route.

When the pressing plate 10 is pressed, the valve 36 moves downward to open the discharge port 16 and at the same time close the branch hole 14,
Pressurized air from the bellows pump 11 by the pressing operation enters the inner container 2 through the discharge port 16 and the air supply passage 13 and pressurizes the content liquid. The inner lid 8 provided on the surface of the outer lid 7 facing the mouth of the inner container 2 is formed with an opening 8a for supplying the air.

A lead-out path 17 for guiding the pressurized content liquid to the upper outside of the inner container 2 is provided with its base end connected to the bottom of the inner container 2. The lead-out path 17 is the inner container 2
And the bottom portion thereof, and rises along the side circumference of the inner container 2 and the upper end is located in the beak-shaped portion 5a of the shoulder member 5 of the body 4 having an inverted U-shaped passage 23 for discharging the content liquid. Is always open to the atmosphere, and the content liquid in the inner container 2 always spontaneously flows in to maintain the same level as in the inner container 2.

The discharge port unit 23 has a built-in water stop valve 25 at the time of fall, and the downward discharge port 19 at the tip of the discharge port unit 23 is located on the front side thereof from the lower end to a position higher than the full water position of the inner container 2. A slit 26 that reaches up to is formed.

Below the beak-shaped portion 5a of the body 4, a beak-shaped portion 5a is formed.
Is provided with a pipe cover 27 surrounding the
a and the outer case 3 of the body 4 are fitted. At the bottom of the pipe cover 27, a liquid injection guide tube 24 that accepts the liquid discharged from the discharge port 19 of the discharge port unit 23 in an open state to the atmosphere and flows out downward is detachably attached from below.

The slit 26 is also involved in the reception in the open state to the atmosphere, and surely prevents the siphon, the splash phenomenon, and the spouting of the content liquid in the case of sudden pouring. The liquid injection guide tube 24 comfortably receives the liquid discharged from the discharge port 19 with a slightly larger diameter, and thereafter gently flows down while squeezing it appropriately.

The air supply passage 13 is provided with a water stop valve 29 at the time of falling.

The rising portion of the outlet passage 17 for the content liquid serves as a liquid level detecting portion 17b and is made of an insulating material. Specifically, glass may be used, but the resin has a higher melting rate and is more likely to obtain a capacitance change, and it is possible to suppress the indeterminacy of the liquid surface level caused by the rise due to the surface tension around the liquid surface.
The liquid level detector 17b is connected to the bottom of the inner container 2 via a straight connecting pipe 17c made of synthetic resin, a curved pipe 17a made of metal, an elbow 17d made of synthetic resin, and a connecting port 17e made of metal.

Here, the aluminum foil 41 is wrapped around the outer periphery of the liquid level detecting portion 17b to form a first electrode, and the liquid level detecting portion 1
The bent tube 17a electrically connected to the content liquid in 7b is used as a second electrode, and the first electrode 41 and the content liquid 42 in the liquid level detection unit 17b communicating with the second electrode 17a are Capacitance sensor 201 facing the insulating peripheral wall of the detection unit 17a
The capacitance corresponding to the size of the confronting region, that is, the liquid level height of the content liquid 42 can be obtained.

The difference in electrostatic capacitance depending on the liquid level is that the sensor 201 is input to a microcomputer (hereinafter referred to as a microcomputer) 66 of a control circuit 91 as shown in FIG. As a result, the microcomputer 66 judges the liquid level of the content liquid by the input corresponding to the difference in the electrostatic capacity, and the external display LEDs 42 ₁ , 42 connected to the microcomputer 66 via the display circuit B according to the judgment. ₂ ... 42 ₆ is driven to externally display the liquid level.

In particular, in order to prevent empty cooking, when the liquid level is lowered to the extent that water supply is required, the LED 80 for indicating water supply is turned on to prompt water supply. For the determination of the liquid level, it is easy to make a table of the relationship between the electrostatic capacity and the liquid level at a necessary stage and make the determination based on this table. LED
Each of 42 _{1 to} 42 ₆ and 80 is provided on the display panel 43 on the front surface of the body 4 as shown in FIG.

An operation panel 203 is provided on the front surface of the pipe cover 27. The operation panel 203 has LED lamps 204, 20 for descaling, boiling, and heat retention.
5, 206 and a reboil key 211 are also provided.

The microcomputer 66 has the LEDs 42 ₁ , 4
Other 2 _6, LED80,204~206 also connected as a display circuit B, the key 211 is also connected to the microcomputer 66 as a switch operating portion 212.

On the other hand, the heater 1 is divided into a warming heater 1a and a boiling water heater 1b, connected to a heater drive circuit 92, and controlled by relays RY1 and RY2 of a control circuit 91.

For this purpose, the contacts R of the relays RY1 and RY2
-1, R-2 are connected to the heaters 1a, 1b as shown in the figure,
The heaters 1a and 1b are relays RY1 by the microcomputer 66,
It is possible to energize in any combination under the control of RY2.

For this control, each relay RY1, RY2
Are transistors TR1 and T controlled by the microcomputer 66.
It is turned on and off by R2.

Specifically, when boiling or re-boiling is performed, the capacity of the heater to be used is set to 800 W by both the heaters 1a and 1b up to about 90 ° C. in order to achieve high-speed boiling.
When the temperature exceeds ℃, it is switched to 740 W only by the heater 1b in order to prevent thermal deterioration around the resin of the outer lid 7 and the body 4. Further, when the temperature is maintained, the heater 1a is turned on and off so that the content liquid is kept at about 80 ° C. with 60 W.

The energization in the boiling water state is detected by the temperature sensor 68 shown in FIG. 1 when the liquid temperature is lower than the heat retention temperature and the water is required to be boiled, and the reboil key 211 is turned on in the heat retention state. When the temperature sensor 68 detects the boiling temperature, it is returned to the heat retention state.

The energization in the heat retaining state is performed by energizing the heat retaining heater 1a when the temperature sensor 68 detects a predetermined heat retaining lower limit temperature and by energizing the heat retaining heater 1a when detecting a predetermined heat retaining upper limit temperature.
Stop energizing. For these controls, the temperature sensor 68 is also connected to the microcomputer 66 via the A / D conversion circuit 202.

Further, under the control of the microcomputer 66, each time the reboil key 211 on the operation panel 203 is turned on, the heat retaining LED 206, the boiling LED 205, and the LE for removing the scaly are obtained.
Each of the D204s is sequentially lit individually, and the mode corresponding to the LED whose lighting has continued for a predetermined time or longer is set and executed. However, when the reboil key 211 is operated again, the operation mode setting can be changed in the same manner as described above.

Further, in this embodiment, a human sensor 210, an automatic off display 207 and an automatic off notification buzzer 208 are provided on the front surface of the pipe cover 27.

The human sensor 210 detects infrared rays emitted by a person, for example, to detect the presence or absence of a person, and a pyroelectric sensor is known. An infrared ray having a peak of about 10 μm is emitted from a normal person as shown in FIG.

This is detected by the human sensor 210, and in order to determine the presence or absence of a person around the electric pot, the output from the human sensor 210 is amplified by the amplifier 31 as shown in FIG.
1, microcomputer 6 via window comparator 312
I am typing in 6.

The microcomputer 66 keeps time by an internal timer based on the clock signal from the clock circuit 313, and when there is no input from the human sensor 210 for a predetermined time, for example, 24 hours, the heaters 1a, 1b. Turn off automatically.

This is considered to be a state of absence when a person does not exist for 24 hours continuously, and the electric pot is forcibly put into a non-use state to avoid danger such as empty cooking and to ensure safety. .

Particularly in this embodiment, the electric hot water storage of the electric pot
A peculiar form that is one of the containers, that is, the pouring part that is the spout
The pipe cover 27 including the outlet 19 is provided in front of the body 4.
That it is provided protruding, and this pipe cover
Perform boiling operation on the 27th part with the reboil key 211
Make sure that the operation panel 203 as the operation surface is located.
It is easy to detect the presence of people and
With a high detection probability, there is a danger when people are not present and people are present
You can respond appropriately to the inconvenience of use.
Is intended to be.

In order to achieve this,
Person sensor 210 for detecting the presence, and this person sensor 210
If the person does not sense the presence of a person for a predetermined period of time,
As a control means for turning off the data 1a, 1b
In the configuration including the microcomputer 66, the human sensor 210
The Paipukaba over which protrudes in front of Utsuwatai 4
It is provided on the operation panel 203 located on the 27 side.

As a result, the human sensor 210 can be operated within a predetermined time.
When the presence of a person is detected in the
Since 1b is left on, pouring operation and mode setting
Even if the operation such as
Keep the container body 4 of the hot water container in a usable state, and
Staying while getting the security guarantee of having people instead
Avoid inconvenient use by people,
When the sensor 210 does not detect the presence of a person for a predetermined time or longer
Turns off the heaters 1a and 1b by the microcomputer 66,
Because there are no people around the body 4, safety cannot be guaranteed.
It is possible to prevent the risk of

In particular, the human sensor 210 has such safety.
In order to secure the pie,
Provided on the operation panel 203 located on the cover 27 side
The installation of the body 4 has the pipe cover 27 side thereof.
So that the operation panel 203 faces the side where the user is.
Since it is normal that the person with the human sensor 210 is
The probability of detection is increased and the pipe cover 2
It becomes easy to detect a person by the protrusion to the front of the body 4 on the 7 side.
It

Therefore, it is easy to detect the presence of a person and
With a high detection probability, there is a danger when people are not present and people are present
The inconvenience of use can be dealt with accurately.

[0046] Incidentally, the microcomputer 66 is at the same time to clear Heater 1a, a 1b, to light the auto-off display 207. This alerts people that when they return to their homes to reuse the electric kettle, automatic measures are taken due to forgetting to turn off the power. It is required to operate the used key.

If these are not necessary, the heater 1
When the human sensor 210 detects the presence of a person during the automatic turning off of a and 1b, it is possible to automatically return to the initial boiling operation of boiling water and then switching to heat retention. In this case, no human operation is required to reuse the electric pot.

When the person returns as described above, the automatic off display 20 is required to request a special operation for reuse.
You may not notice it only by turning on 7.

Therefore, when the human sensor 210 detects the presence of a person while the heaters 1a and 1b are automatically turned off, the automatic off notification buzzer 208 is operated to prompt the reuse operation.

FIG. 5 shows a flowchart of a subroutine for the automatic off processing control as described above by the microcomputer 66.

[0051]

According to the present invention, the sensor can be operated within a predetermined time.
When the presence of a person is detected, the control means turns on the heater.
Since the operation of pouring out and mode setting etc.
Even if it is not done for a fixed time, you can use the electric hot water storage container
To be kept open and people around the electric hot water storage container
While guaranteeing the safety of the
So that there is no inconvenience for the
When the presence of a person is not detected, the heater is controlled by the control means.
Turn off to ensure safety with no people around the electric hot water storage container
It is possible to prevent the danger caused by not being performed.

In particular, the sensor ensures such safety.
On the side of the spout that is provided on the upper side of the body.
It is provided on the operation surface for placing a boiling water
On the installation side, the boiling point side of this and the boiling water operation are performed.
It is common for the operation surface to face the side where the user is.
Therefore, the probability that the sensor can detect a person is increased.
And the protrusion on the spout side in front of the body
Is easier to detect.

Therefore, it is easy to detect the presence of a person and
With a high detection probability, there is a danger when people are not present and people are present
The inconvenience of use can be dealt with accurately.

[Brief description of drawings]

FIG. 1 is a sectional view showing an electric pot as an embodiment to which the present invention is applied.

FIG. 2 is a perspective view showing an operation panel of the electric pot.

FIG. 3 is a control circuit diagram of an electric pot.

FIG. 4 is a graph showing the light emission intensity of a person.

FIG. 5 is a flowchart of an automatic off processing subroutine by a control circuit.

[Explanation of reference numerals] 1 heater 19 spout 27 pipe cover 42 content liquid 66 microcomputer 91 control circuit 203 operation panel 210 human sensor

Claims (1)

[Scope of utility model registration request] 1. A electric hot water storage vessel incubating the content liquid after it kept warm or kettle is heated by a heater, a sensor for detecting the presence of a person in the near neighbor, the sensor is continuously the existence of human predetermined time And a control means for turning off the heater when the sensor is not sensed .
Hot water located on the side of the spout that protrudes forward of the body
An electric hot water storage container provided on the operation surface for boiling operation .