JP3137098B2 - Electric hot water storage container - 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 hot water storage container, and more particularly, to a device for detecting a remaining amount in an electric hot water storage container.

[0002]

2. Description of the Related Art A well-known electric hot water storage container includes a container body provided with an inner container for storing hot water, a lid for opening and closing the container body, and a heating means for heating the inner container. And a pumping device for feeding hot water through the pouring passage, for discharging hot water in the inner container to the outside.

[0003] In the case of the electric hot water storage container having the above-described structure, if the remaining amount of hot water contained in the inner container can be externally confirmed before the pump device is driven to perform the pouring operation, it is difficult for the user. Extremely convenient.

[0004] In order to respond to the above demands, various kinds of remaining amount display have been conventionally performed. For example, a method of providing a transparent liquid pipe in the middle of the pouring passage and visually checking the water level in the liquid pipe from outside, or a plurality of pairs of transparent liquid pipes provided in the middle of the pouring passage (for example, , 6) are provided, and a change in water level in the liquid pipe is detected by the optical sensors and displayed on the remaining amount display unit.

[0005]

In the above-mentioned remaining amount display method, in the former case, an observation window for visually recognizing the liquid amount tube from the outside must be formed in the container body, which is structurally complicated. In the latter case, the number of optical sensors for detecting the water level is required by the number (for example, six) corresponding to the number of steps of the remaining amount display, so that the component cost increases and the remaining amount There is a problem that it is difficult to increase the number of display steps.

The present invention has been made in view of the above points, and has as its object to enable the remaining amount display to be performed at low cost and to prevent the number of display steps from being limited. Things.

[0007]

According to the first aspect of the present invention, as a means for solving the above problems, a container body having an inner container, a lid of the container body, and a heating device for heating the inner container are provided. Means, a pouring passage for pouring hot water in the inner container to the outside, and a pump device for pumping hot water through the pouring passage. A water detection unit that is provided at a higher position and outputs a reaching signal when water arrives by driving the pump device; and water is output when the water detection unit outputs a reaching signal.
Before the pump is discharged to the outside, the operation of the pump device is stopped.
Control means for calculating the remaining amount in the inner container based on the time from the start of driving of the pump device to the arrival of the arrival signal from the water detecting means, and the remaining amount calculating means And a remaining amount display means for displaying the remaining amount determined by the above.
At times, the vehicle is driven at a low speed .

[0008] With the above construction, when the hot water in the inner container reaches the water detecting means through the discharge passage by driving the pump apparatus, the water detecting means outputs a reaching signal, and The remaining amount in the inner container is calculated based on the time from the drive start time to the arrival signal output time from the water detecting means, and the remaining amount thus determined is displayed on the remaining amount display means. That is, the remaining amount in the inner container can be displayed by the single water detecting means provided above the full water position in the spout passage without limiting the number of display steps. Moreover, when the pump device is used to detect the remaining amount,
Is operated at low speed, so
From the start of operation of the pump device to the water detection means.
And the accuracy of the remaining amount detection
Is improved.

According to a second aspect of the present invention , the above object is achieved.
As a means for achieving this, an inner container that can be used as a cool container
Equipped container body, a lid of the container body, and the inner container
Heating means for heating and pouring hot water in the inner container to the outside
For discharging hot water through the pouring passage and the pouring passage
A pump device and a temperature sensor for detecting the temperature of the inner container
In the electric hot water storage container provided with
Above the full water level, and
Water detection that outputs an arrival signal when water arrives due to motion
Means for detecting the water from the start of driving the pump device
Based on the time until the arrival signal output time from the means
Remaining amount calculation means for calculating the remaining amount in the inner container, and the remaining amount calculation
The remaining amount determined by the means is used as the temperature from the temperature sensor.
Correction means for correcting based on degree information;
And a remaining amount display means for displaying the corrected remaining amount.
I have.

With the above-described configuration, the pump
Hot water in the inner container passes through the discharge passage when the device is driven, and water is detected.
When it reaches the detection means, the water detection means outputs a reaching signal.
The water detecting means from the start of driving the pump device.
The inner container based on the time at which the arrival signal is output from the
The remaining amount is calculated and the remaining amount is
Is corrected based on the temperature information from the
Displayed in columns. In other words, the water filling position
Temperature compensation by one water detection means provided above
Accurate remaining amount display in the displayed inner container limits the number of display stages
It can be done without being done.

According to a third aspect of the present invention , the above object is achieved.
Container body provided with an inner container, and the container
A lid for the main body, heating means for heating the inner container,
And pouring passage for pouring the hot water in the inner vessel to the outside, the infusion
Electricity provided with a pump device for sending hot water through an outlet passage
In the hot water storage container,
Provided above, water arrives by driving the pump device
Water detecting means for outputting a reaching signal at the time of
From the water detection means from the start of the operation of the pump device.
The remaining amount in the inner container based on the time until the output
Remaining amount calculating means for calculating, and
And a remaining amount display means for displaying the remaining amount.
In the pouring passage, the water detecting means is located above the installation site.
And a return passage that branches off and communicates with the inner container.
At the time of detection of the remaining amount.
A switching valve that allows only the circulation to the recirculation passage is provided.
You.

[0012] With the above configuration, the pump
Hot water in the inner container passes through the discharge passage when the device is driven, and water is detected.
When it reaches the detection means, the water detection means outputs a reaching signal.
The water detecting means from the start of driving the pump device.
The inner container based on the time at which the arrival signal is output from the
The remaining amount is calculated, and the remaining amount thus obtained is displayed in the remaining amount table.
Display means. In other words, the full water level in the discharge passage
Inner container by one water detection means provided above
Can display the remaining amount in the display without limiting the number of display steps
It is. In addition, the pump device is driven to detect the remaining amount
When the hot water passes through the water detection means,
Pump inside the inner container.
The hot water to the outside via the pouring passage without stopping the
No more worrying about being dispensed. Also, in the discharge passage
The hot water is returned to the inner container every time the remaining amount is detected.
This prevents cold water from accumulating in the discharge passage.
And the circulation of hot water activates the hot water in the inner container.
This improves the taste of the hot water.

[0013]

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

First Embodiment FIGS. 1 and 2 show an electric hot water storage container according to a first embodiment of the present invention.

As shown in FIG. 1, this electric hot water storage container
A container body 1 provided with an inner container 3 for storing hot water, a lid 2 for opening and closing the container body, an electric heater 4 serving as a heating means for heating the inner container 3, and the hot water in the inner container 3 And a pump device 6 for sending out hot water through the pouring passage 5.

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

The inner container 3 has a vacuum double structure 3 having a continuous vacuum space 10 from the side periphery to the bottom periphery.
a, and a non-vacuum part 3b which is located at the center of the bottom surface and has no vacuum space.
Metal-made (for example, stainless steel) bottomed inner cylinder 11
And an outer cylinder 12 made of metal (for example, stainless steel) located outside the inner cylinder 11. Also,
The non-vacuum section 3b is constituted only by the bottom of the inner cylinder 11.

At the opening of the inner container 3, there is formed a water supply port 13 having a smaller diameter than the body.
A full scale 14 is provided in a lower part of the area.

The electric heater 4 is arranged in contact with the lower surface of the non-vacuum part 3b of the inner container 3. A temperature sensor 15 for detecting the temperature of the inner container 3 is provided at the center of the electric heater 4 on the lower surface of the raised portion 16 formed in the non-vacuum portion 3b of the inner container 3. They are arranged in contact with each other. Reference numeral 17 denotes a heat shield plate.

The outlet passage 5 includes an inlet connection pipe 5a connected to the non-vacuum part 3b of the inner container 3, a pump device 6, and a lower connection pipe 5b connected to a discharge port of the pump device 6. A detection pipe 5c connected to the lower connection pipe 5b and extending upward in a space between the outer case 7 and the inner container 3 in the container body 1, and connected to an upper end of the detection pipe 5c to Upper connecting pipe 5d extending toward the inside of a beak 8a formed on the front side of the shoulder member 8 in the main body 1.
And an outlet pipe 5e connected to the upper connection pipe 5d and extending downward from the beak portion 8a. Sign 1
Reference numeral 8 denotes a water stop valve.

The pump device 6 is attached to a mounting bracket 19 fixed to the bottom surface of the outer cylinder 12 by screwing together with the heat shield plate 17 with screws 20. With this configuration, the pump device 6 can be mounted using the bottom surface of the vacuum double structure 3a of the inner container 3, so that the structure can be simplified and the mounting strength can be secured.

The lid 2 comprises a synthetic resin upper plate 21 and a synthetic resin lower plate 22 whose outer peripheral edge is joined to the upper plate 21 by welding. It is openably and closably and detachably supported via a hinge pin 24 with respect to a hinge receiver 23 provided at a rear portion.

A metal cover member 25 is fixed to the lower plate 21 of the lid 2 with screws 26. The outer peripheral edge of the cover member 25 is attached to the inner container when the lid 2 is closed. A seal packing 27 that is pressed against the third water supply port 13 is provided. Reference numeral 28 denotes a steam discharge passage, 29
Are the water stop valves provided in the middle of the steam discharge passage 28;
0 is a heat insulating material.

The detecting tube 5c of the pouring passage 5 is formed of a transparent glass tube, and a portion of the detecting tube 5c immediately above a full position (ie, a position corresponding to the full scale 14 of the inner container 3). The water detecting means 3 outputs an arrival signal when the water W arrives by driving the pump device 6.
1 is provided.

The water detecting means 31, as shown in FIG.
A transparent sensor holder 32 having a semicircular concave portion 33 disposed on the outer periphery of the detection tube 5c and through which the detection tube 5c is inserted, and disposed at a position sandwiching the detection tube 5c in the sensor holder 32. Light emitting element (for example,
Infrared light emitting diode) 34 and a light receiving element (for example,
This is an optical sensor including an infrared phototransistor (35) and a substrate 36 provided with the light emitting element 34 and the light receiving element 35.

The light sensor 31 outputs a high-level voltage when infrared light emitted from the light emitting element 34 passes through the detection tube 5c and is received by the light receiving element 35, and the infrared light emitted from the light emitting element 34 is When it does not reach 35, it acts to output a low-level voltage. That is, when the water W is not present in the sensor installation part, the infrared light from the light emitting element 34 is received by the light receiving element 35, so that a high-level voltage is output, but the water W exists in the sensor installation part. Sometimes, the infrared light from the light emitting element 34 is refracted by the water W and does not reach the light receiving element 35, so that a low-level voltage is output. Therefore, the light sensor 3
By sensing a change in the output voltage from 1 (that is, a change from a high level to a low level), it is possible to detect the arrival of the water W by driving the pump device 6.

As the water detecting means 31, as shown in FIG. 4, the detecting pipe 5c in the pouring passage 5 is made of a first conductive material (for example, stainless steel) provided above the full water position. The detection tube 5c ₁ and the first detection tube 5
insulator against c ₁ from the positioned below and the first detector tube 5c ₁ (e.g., rubber) conductive material connected by connecting the packing 37 made of (e.g., stainless steel) and the second detection tube 5c ₂ consisting of a first conducting portion 38 provided on the first sensing pipe 5c _1, there is a case to adopt those constituted by a second conducting portion 39 provided on the second sensing pipe 5c _2. In this case, when the first detection tube 5c ₁ on the water W does not reach but the first conducting portion 38 and the second conducting portion 39 constitutes an open circuit, the first detection tube 5c ₁ in water W When it arrives, the first energizing section 38 and the second energizing section 39 are brought into conduction via the water W, forming a closed circuit. Therefore, by sensing the conduction state between the first power supply unit 38 and the second power supply unit 39, it is possible to detect the arrival of the water W due to the drive of the pump device 6.

On the front side of the outer case 7 in the container body 1, as shown in FIG. 2, an electronic display section 41 acting as a remaining amount display means for displaying the remaining amount of hot water in the inner container 3.
Is provided. Also,
The remaining amount display panel 40 includes a full indicator lamp 42 serving as a full indicator for indicating that the water detector 31 has detected a full state, and a water supply when the inner container 3 is determined to be empty. A water supply indicator lamp 43 acting as a required water supply display means for performing display is provided along with the electronic display unit 41. The electronic display section 41 is provided with seven display lights 41a to 41g.
Seven levels of remaining amount are displayed based on the number of lightings a to 41g.

The beak 8a of the shoulder member 8 is provided with an operation panel 44 provided with operation switches such as a hot water supply switch 46 (see FIG. 2). And a control board 45 provided with a microcomputer unit (hereinafter abbreviated as a microcomputer) 47 (see FIG. 5) constituting the control means.

The electric elements in the electric hot water storage container having the above configuration are connected as shown in FIG. Reference numeral 48 denotes a pump drive circuit. Note that the electric heater 4 is omitted.

The microcomputer 47 calculates the remaining amount in the inner container 3 based on the time t from the time when the pump device 6 starts to be driven to the time when the arrival signal is output from the water detecting means 31. When the remaining signal is not output from the water detecting means 31 even after a predetermined time has passed when the remaining amount is detected by driving the pump device 6, it is determined that the inner container 3 is empty. It has a function as a determining means and a function as a control means for stopping the driving of the pump device 6 when the arrival signal is outputted by the water detecting means 31. In addition, the said pump apparatus 6
When the remaining amount is detected, the operation is performed at a low speed.

The remaining amount detection control in the electric hot water storage container having the above configuration will be described with reference to a flowchart shown in FIG.

Firstly, water detection means 3 in step S ₁
1 to determine whether or not the arrival signal is output (in other words,
It is determined whether the hot water W has reached the water detecting means 31). If an affirmative determination is made in step S _1, it indicates that the hot water in the inner container 3 is greater than the full water scale 14, is lit full water indicator lamp 42 in step S _2, the user to the inner container 3 in the Warn you to reduce water.

[0034] When a negative determination is made in step S _1, the temperature data from the temperature sensor 15 is taken in step S _3, the measurement timer for remaining amount detection is started in step S _4, in step S ₅ The driving of the pump device 6 is started at a low speed.

[0035] Then, measurement timer is discriminated whether reached water determination time t ₀ is made in step S _6. Here, the water supply determination time t ₀ is that no arrival signal is output from the water detecting means 31 even though the pump device 6 is driven (that is, it is determined that the inner container 3 is empty). Until the time is up. Therefore, if the determination is positive at step S _6, the step S ₇
In, the water supply indicator lamp 43 is turned on to warn the user to urge water supply.

[0036] Step If a negative determination is made in S _6, if not (in other words if arrival signal from the water detecting means 31 in step S ₈ is outputted, the water detection means 3
1 is determined). Here, if a negative determination is returned to the step S _6,
If an affirmative determination, the process proceeds to step S _9, the driving of the pump device 6 is stopped. By stopping the drive of the pump device 6, the hot water is not poured out through the pouring passage 5.

Next, time data of the measuring timer in step S ₁₀ (i.e., the driving start time of the pump device 6 time t until reaching the signal output time from the water detecting means 31) in the inner container 3 on the basis of the The remaining amount of hot water is calculated,
Since this electric hot water storage container can be used both as a heat storage container and a cold storage container, the time data t of the measurement timer is affected by the temperature. Therefore, the time data t is referred to the temperature data T from the temperature sensor 15. Needs to be corrected. Therefore, the relationship between the time data t and the remaining amount L in the inner container 3 is determined by setting the water temperature T to 5 ° C. (during cold storage) and 95 ° C.
(At the time of heat retention), and the results were as shown in FIG. According to this, when the water temperature T = 5 ° C., the time data t when the remaining amount L is the same is larger than when the water temperature T = 95 ° C. This is because the viscosity of water increases as the temperature decreases. Therefore,
A correction value Δt = −f (T) expressed as a function of the temperature T may be added to the time data t obtained from the measurement timer.

The remaining amount L calculated as described above is
It is displayed on the electronic display unit 41 in step S _11. Thereafter, the predetermined time in step S ₁₂ (for example, 30
Min) determination is made whether or not elapsed, wherein when a positive determination is made, returns to step S _1, continues a similar remaining amount detecting control as described above.

That is, in the present embodiment, the remaining amount detection is performed periodically. In this way, even when the remaining amount in the inner container 3 increases or decreases, the user can confirm the remaining amount based on the periodic remaining amount detection. In addition, since the remaining amount can be displayed based on the arrival time t of the hot water to one water detecting means 31, the remaining amount display can be performed without limitation to the number of display steps.

Second Embodiment FIG. 8 shows a flowchart of the remaining amount detection control in an electric hot water storage container according to a second embodiment of the present invention.

In this case, in addition to the functions described in the first embodiment, the microcomputer 47 sets the minimum necessary setting for the remaining amount detection after the driving of the pump device 6 is started for the remaining amount detection. It has a function as control means for stopping the drive of the pump device 6 when the time ts has elapsed. The other mechanical and electrical configurations are the same as in the first embodiment, and a description thereof will not be repeated.

The control for detecting the remaining amount in the electric hot water storage container having the above configuration will be described with reference to the flowchart shown in FIG.

[0043] First, in step S ₁ the remaining amount detection flag f is reset (i.e., set to f = 0), whether arrival signal from the water detecting means 31 in step S ₂ is output (in other words, It is determined whether the hot water W has reached the water detecting means 31). If an affirmative determination in step S _2, it indicates that the hot water in the inner container 3 is greater than the full water scale 14, is lit full water indicator lamp 42 in step S _3, the user inner container 3 in the Warn you to reduce water.

[0044] When a negative determination is made in step S _2, the temperature data from the temperature sensor 15 in step S ₄ is taken, the measurement timer for detecting remaining amount in step S ₅ is started, in step S ₆ The driving of the pump device 6 is started at a low speed.

[0045] Then, (in other words, whether or not the hot water W reaches the water detection means 31) whether or arrival signal from the water detecting means 31 in step S ₇ is output a determination is made. Here, in the case when a negative determination then proceeds to step S _11, the determination is positive, the step S
Proceeding to ₈ , it is determined whether the remaining amount detection flag f = 0. Here, if a negative determination is made, step S ₁₁
The process proceeds to, the process proceeds to step S ₉ when an affirmative determination is made, the time data of the measurement timer (i.e., time t from driving start time of the pump unit 6 to reach the signal output time from the water detecting means 31) is recorded in the microcomputer 47, is a remaining amount detection flag f = 1 in step S _10, then the process proceeds to step S _11.

[0046] Step S time by measuring timer t is determined end time at ₁₁ (i.e., the set time ts of the minimum required for the remaining amount detection) reached (i.e., t = ts) whether the determination is made , here, if a negative determination returns to step S _7, the driving of the pump device 6 is stopped in step S ₁₂ in the case where an affirmative determination. By stopping the drive of the pump device 6, the hot water is not poured out through the pouring passage 5.

[0047] Then, whether the remaining amount detection flag f = 1 is determined is made in step S _13, wherein, when a negative determination is made, setting the minimum required for the pump device 6 is the remaining amount detection Despite being driven for the time ts, the arrival signal is not output from the water detection means 31 (that is,
Since the inner container 3 is meant to a) the empty state, the process proceeds to step S _14, the water supply indicating lamp 43 is turned on, a warning to prompt the water supply to the user.

[0048] Step If a positive determination is made in S _13, the time measuring timer data (i.e. in step S _15, time t from driving start time of the pump unit 6 to reach the signal output time from the water detecting means 31 ), The remaining amount L of hot water in the inner container 3 is calculated. This calculation is performed in the same manner as in the first embodiment.

The remaining amount L calculated as described above is
It is displayed on the electronic display unit 41 in step S _16. Thereafter, the predetermined time in step S ₁₇ (for example, 30
Min) determination is made whether or not elapsed, wherein when a positive determination is made, returns to step S _1, continues a similar remaining amount detecting control as described above.

As described above, in the present embodiment, the drive of the pump device 6 is stopped after the minimum set time ts necessary for detecting the remaining amount has elapsed, and the pump device 6 is discharged to the outside through the pouring passage 5. Will not be poured out. Other functions and effects are the same as those in the first embodiment, and the description is omitted.

Third Embodiment FIG. 9 shows an electric configuration of an electric hot water storage container according to a third embodiment of the present invention, and FIG. 10 shows a third embodiment of the present invention. 2 is a flowchart of the remaining amount detection control in the electric hot water storage container according to the first embodiment.

In this case, the detection of the remaining amount is performed at the time of refilling the inner container 3 with water (in other words, at the time of opening and closing the lid 2) and immediately after pouring. Therefore, as shown in FIG. 9, a lid open switch 49 for detecting that the lid 2 has been opened is provided. The other mechanical and electrical configurations are the same as in the first embodiment, and a description thereof will not be repeated.

The control for detecting the remaining amount in the electric hot water container having the above configuration will be described with reference to the flowchart shown in FIG.

[0054] First, water detection means 3 in step S ₁
1 to determine whether or not the arrival signal is output (in other words,
It is determined whether the hot water W has reached the water detecting means 31). If an affirmative determination is made in step S _1, it indicates that the hot water in the inner container 3 is greater than the full water scale 14, is lit full water indicator lamp 42 in step S _2, the user to the inner container 3 in the Warn you to reduce water.

[0055] When a negative determination is made in step S _1, the cover opened whether there is a signal input from the switch 49 in step S ₃ (i.e., whether the lid 2 is opened operation water supplemented) been made of the determination, wherein when an affirmative determination is made, the process proceeds to step S _5, when a negative determination, the process proceeds to step S _4, whether the hot water supply switch 46 is oN / OFF operation (i.e. , pouring operation is performed is determined whether or not) has been performed, the process returns to step S ₁ when a negative determination is made here, if a positive determination is made, the process proceeds to step S _5, the temperature sensor 15 captured temperature data is measured timer is started for the remaining amount detection in step S _6, the pump device 6 starts driving at a low speed in step S _7.

[0056] Then, measurement timer in step S ₈ it is determined whether reaches the water determination time t ₀ is made. Here, the water supply determination time t ₀ is that no arrival signal is output from the water detecting means 31 even though the pump device 6 is driven (that is, it is determined that the inner container 3 is empty). Until the time is up. Therefore, if the determination is positive at step S _8, the step S ₉
In, the water supply indicator lamp 43 is turned on to warn the user to urge water supply.

[0057] Step If a negative determination is made in S _8, if not (in other words if arrival signal from the water detecting means 31 in step S ₁₀ is outputted, the water detection means 3
1 is determined). Here, if a negative determination returns to step S _8,
If an affirmative determination, the process proceeds to step S _11, the driving of the pump device 6 is stopped. By stopping the drive of the pump device 6, the hot water is not poured out through the pouring passage 5.

Next, time data of the measuring timer in step S ₁₂ (i.e., the driving start time of the pump device 6 time t until reaching the signal output time from the water detecting means 31) in the inner container 3 on the basis of the The remaining amount L of hot water is calculated.
This calculation is performed in the same manner as in the first embodiment.

The remaining amount L calculated as described above is
In step S ₁₃ is displayed on the electronic display unit 41, then returns to step S _1, continues a similar remaining amount detecting control as described above.

As described above, in the present embodiment, the detection of the remaining amount in the inner container 3 is performed when water is supplied to the inner container 3 and immediately after the hot water in the inner container 3 is poured out. As a result, the remaining amount can be detected and displayed only at the time of water replenishment and immediately after pouring in which the remaining amount in the inner container 3 increases or decreases. can get. Therefore, power consumption can be saved. Other functions and effects are the same as those in the first embodiment, and the description is omitted.

In the present embodiment, the stop timing of the pump device 6 after the detection of the remaining amount is immediately after the arrival signal is output from the water detecting means 31. However, as in the second embodiment, the stop timing of the pump device 6 is the same. The time may be the time when the minimum set time ts required for the amount detection has elapsed.

Fourth Embodiment FIGS. 11 and 12 show an electric hot water storage container according to a fourth embodiment of the present invention.

In this case, the detection pipe 5c in the pouring passage 5
Is provided with a lower limit water level detecting means 50 for detecting the lower limit water level L ₀ in the inner container 3. The lower limit water level detecting means 50 is an optical sensor having a structure similar to that of the water detecting means 31, but when the hot water in the inner container 3 becomes lower than the lower limit water level, the output voltage from the optical sensor 50 becomes lower. Since the level changes from a low level to a high level, by sensing this, the lower limit water level can be detected. A water supply indicator lamp 43, which is a water supply required display means, is turned on by a detection signal from the optical sensor 50. By doing so, when the hot water in the inner container 3 is lower than the lower limit water level L _{0, a} signal is output from the optical sensor 50 and the water supply indicator lamp 43 is turned on, so that the empty detection of the inner container is easy. Can be. The other configuration and operation and effect are the same as those in the first embodiment, and the description is omitted.

Fifth Embodiment FIG. 13 shows an electric hot water storage container according to a fifth embodiment of the present invention.

In this case, the upper connecting pipe 5d in the pouring passage 5 is branched from the upper connecting pipe 5d,
A detour passage 51 is provided around the outer periphery of the upper connection pipe 5d to return above the branch portion of the upper connection pipe 5d. By doing so, the length of the passage above the water detecting means 31 is increased by the length of the bypass passage 51, so that the pump device 6 at the time of detecting the remaining amount is not used.
It is possible to reliably prevent the hot water from flowing out to the outside through the pouring passage 5 at the time of driving. The other configuration and operation and effect are the same as those in the first embodiment, and the description is omitted.

Sixth Embodiment FIGS. 14 to 16 show an electric hot water storage container according to a sixth embodiment of the present invention.

In this case, the inner container 3 has a single structure made of stainless steel or the like. In addition, the upper connecting pipe 5 which is located above the installation site of the water detecting means 31 in the pouring passage 5.
A return passage 52 communicating with the inner container 3 is formed in a branch at d. As shown in FIG. 15, the return passage 52 is connected to the return passage 52 when the remaining amount is detected. A switching valve 53 that allows only circulation is provided. In this case, the branch portion of the upper connection pipe 5d is constituted by a synthetic resin branch pipe 54 inclined downward to the inner container 3 side, and the branch pipe 54 has a spout pipe 5e side. A magnetic stainless steel pipe 55 is connected via a packing 56. The branch pipe 54 is
The inner container 3 is connected to the inner container 3 via a return passage 52 including a packing 57 and a return port 58. A coil 5 connected to a power supply is provided around the outer periphery of the stainless steel pipe 55.
9 are wound.

On the other hand, in the branch pipe 54, a stainless steel ball 60 having magnetic properties is rotatably accommodated.
When the coil 59 is energized and the stainless steel pipe 55 is excited, the stainless steel ball 60 is attracted to the inlet 55a of the stainless steel pipe 55 and
5a is closed and the stainless steel pipe 55 is de-energized by stopping the energization of the coil 59.
4 is rolled by gravity to close the outlet 54a. That is, the switching valve 5 that allows the stainless steel pipe 55, the coil 59, and the stainless steel ball 60 to allow only the circulation to the return passage 52 when the remaining amount is detected.
No. 3 is to be constituted. Other configurations are the same as those in the first embodiment, and a description thereof will be omitted.

The control for detecting the remaining amount in the electric hot water storage container having the above configuration will be described with reference to the flowchart shown in FIG.

[0070] First, water detection means 3 in step S ₁
1 to determine whether or not the arrival signal is output (in other words,
It is determined whether the hot water W has reached the water detecting means 31). If an affirmative determination is made in step S _1, it indicates that the hot water in the inner container 3 is greater than the full water scale 14, is lit full water indicator lamp 42 in step S _2, the user to the inner container 3 in the Warn you to reduce water.

[0071] When a negative determination is made in step S ₁ is energized to the coil 59 constituting the switching valve 53 in step S _3. Then, the switching valve 53 is connected to the recirculation passage 5.
2 is opened. Then, the temperature data from the temperature sensor 15 is taken in step S _4, step S
_{In 5} , a measurement timer for detecting the remaining amount is started, and in step S ₆ , the driving of the pump device 6 is started at a low speed.

Next, measurement timer in step S ₇ it is determined whether reaches the water determination time t ₀ is made.
Here, the water supply determination time t ₀ is that no arrival signal is output from the water detecting means 31 even though the pump device 6 is driven (that is, it is determined that the inner container 3 is empty). Until the time is up. Therefore, if the determination is positive at step S _7, the water supply indicating lamp 43 is turned on in step S _8, a warning to prompt the water supply to the user.

If a negative determination is made in step S ₇ , it is determined in step S ₉ whether the arrival signal has been output from the water detection means 31 (in other words, whether the water detection means 3
1 is determined). Here, if a negative determination returns to step S _7,
If an affirmative determination, the process proceeds to step S _10, the driving of the pump device 6 is stopped.

Next, in step S ₁₁ , the internal time of the inner container 3 is determined on the basis of the time data of the measurement timer (ie, the time t from the start of driving the pump device 6 to the output of the arrival signal from the water detecting means 31). The remaining amount L of hot water is calculated.
This calculation is performed in the same manner as in the first embodiment.

The remaining amount L calculated as described above is
It is displayed on the electronic display unit 41 in step S _12. Thereafter, energization of the coil 59 is stopped in step S ₁₃ (in other words, the changeover valve 53 is closed the recirculation passage 52), the predetermined time in step S ₁₄ (for example, 30
Min) determination is made whether or not elapsed, wherein when a positive determination is made, returns to step S _1, continues a similar remaining amount detecting control as described above.

As described above, in the present embodiment,
When the pump device 6 is driven to detect the remaining amount, the hot water that has passed through the water detecting means 31 returns to the inner container 3 via the return passage 52, and is discharged to the outside via the discharge passage 5. There is no need to worry about hot water being poured. Further, the hot water in the pouring passage 5 is returned to the inner container 3 each time the remaining amount is detected, so that the low-temperature hot water does not accumulate in the pouring passage 5 and the hot water circulates. The hot water in the inner container 3 is activated, and the taste of the hot water is improved. Other functions and effects are the same as those in the first embodiment, and a description thereof will be omitted.

Seventh Embodiment FIG. 18 shows a flowchart of the remaining amount detection control in an electric hot water storage container according to a seventh embodiment of the present invention.

In this case, in addition to the functions described in the first embodiment, the microcomputer 47 sets the minimum necessary for detecting the remaining amount after starting the driving of the pump device 6 for detecting the remaining amount. It has a function as control means for stopping the drive of the pump device 6 when the time ts has elapsed. Note that the other mechanical and electrical configurations are the same as in the sixth embodiment, and thus description thereof will be omitted.

The control for detecting the remaining amount in the electric hot water storage container having the above configuration will be described with reference to the flowchart shown in FIG.

First, in step S ₁ , the remaining amount detection flag f is reset (that is, f = 0), and in step S ₂ , whether or not the arrival signal is output from the water detection means 31 (in other words, whether or not the water is detected) It is determined whether the hot water W has reached the detection means 31). If an affirmative determination in step S _2, it indicates that the hot water in the inner container 3 is greater than the full water scale 14, is lit full water indicator lamp 42 in step S _3, the user inner container 3 in the Warn you to reduce water.

[0081] When a negative determination is made in step S ₂ is energized to the coil 59 constituting the switching valve 53 in step S _4. Then, the switching valve 53 is connected to the recirculation passage 5.
2 is opened. Then, the temperature data from the temperature sensor 15 is taken in step S _5, step S
_{In 6} , a measurement timer for detecting the remaining amount is started, and in step S ₇ , the driving of the pump device 6 is started at a low speed.

Next, water detection means 3 in step S ₈
1 to determine whether or not the arrival signal is output (in other words,
It is determined whether the hot water W has reached the water detecting means 31). Here, if a negative determination is made, step S
The process proceeds to _12, when a positive determination is made, the process proceeds to step S _9, a determination is made whether the remaining amount detection flag f = 0. Here, if a negative determination is made, the process proceeds to step S _12, the process proceeds to step S ₁₀ if the determination is positive,
Time data of the measuring timer (i.e., time t from driving start time of the pump unit 6 to reach the signal output time from the water detecting means 31) is recorded in the microcomputer 47, the remaining amount detection flag f = 1 in step S ₁₁ is a, then the process proceeds to step S _12.

[0083] time by measuring timer t is determined end time in step S ₁₂ (i.e., the set time ts of the minimum required for the remaining amount detection) reached (i.e., t = ts) whether the determination is made , here, if a negative determination returns to step S _8, the driving of the pump device 6 is stopped in step S ₁₃ in the case where an affirmative determination.

[0084] Then, whether the remaining amount detection flag f = 1 is determined is made in step S _14, wherein, when a negative determination is made, setting the minimum required for the pump device 6 is the remaining amount detection Despite being driven for the time ts, the arrival signal is not output from the water detection means 31 (that is,
Since the inner container 3 is meant to a) the empty state, the process proceeds to step S _15, the water supply indicating lamp 43 is turned on, a warning to prompt the water supply to the user.

If an affirmative determination is made in step S ₁₄ , the time data of the measurement timer (that is, the time t from the start of driving the pump device 6 to the output of the arrival signal from the water detecting means 31) is determined in step S ₁₆ . ), The remaining amount L of hot water in the inner container 3 is calculated. This calculation is performed in the same manner as in the first embodiment.

The remaining amount L calculated as described above is
It is displayed on the electronic display unit 41 in step S _17. Thereafter, energization of the coil 59 is stopped in step S ₁₈ (in other words, the changeover valve 53 is closed the recirculation passage 52), the predetermined time in step S ₁₉ (for example, 30
Min) determination is made whether or not elapsed, wherein when a positive determination is made, returns to step S _1, continues a similar remaining amount detecting control as described above.

As described above, in this embodiment, the drive of the pump device 6 is stopped after the minimum set time ts required for detecting the remaining amount has elapsed, and the pump device 6 is discharged to the outside through the pouring passage 5. Will not be poured out. Other functions and effects are the same as those in the first and sixth embodiments, and thus description thereof is omitted.

Eighth Embodiment FIG. 19 shows an electric configuration of an electric hot water storage container according to an eighth embodiment of the present invention, and FIG. 20 shows an eighth embodiment of the present invention. 2 is a flowchart of the remaining amount detection control in the electric hot water storage container according to the first embodiment.

In this case, the remaining amount detection is carried out at the time of supplying water to the inner container 3 (in other words, at the time of opening and closing the lid 2) and immediately after pouring. Therefore, as shown in FIG. 19, a lid open switch 49 for detecting that the lid 2 has been opened is provided. The other mechanical configuration and electrical configuration are the same as those in the first and sixth embodiments, and the description is omitted.

The control for detecting the remaining amount in the electric hot water storage container having the above configuration will be described with reference to the flowchart shown in FIG.

[0091] First, water detection means 3 in step S ₁
1 to determine whether or not the arrival signal is output (in other words,
It is determined whether the hot water W has reached the water detecting means 31). If an affirmative determination is made in step S _1, it indicates that the hot water in the inner container 3 is greater than the full water scale 14, is lit full water indicator lamp 42 in step S _2, the user to the inner container 3 in the Warn you to reduce water.

[0092] When a negative determination is made in step S _1, the cover opened whether there is a signal input from the switch 49 in step S ₃ (i.e., whether the lid 2 is opened operation water supplemented) been made of the determination, wherein when an affirmative determination is made, the process proceeds to step S _5, when a negative determination, the process proceeds to step S _4, whether the hot water supply switch 46 is oN / OFF operation (i.e. , pouring operation is performed is determined whether or not) has been performed, but returns to step S ₁ when a negative determination is made here, if a positive determination is made, the process proceeds to step S _5, the changeover valve 53 Electric power is supplied to the coil 59 constituting the coil. Then, the switching valve 53 is connected to the return passage 52.
Is opened. Then, the temperature data from the temperature sensor 15 is taken in step S _6, step S ₇
Measurements timer for remaining amount detection is started, the pump device 6 starts driving at a low speed in step S ₈ in.

[0093] Next, measurement timer in step S ₉ it is determined whether reaches the water determination time t ₀ is made.
Here, the water supply determination time t ₀ is that no arrival signal is output from the water detecting means 31 even though the pump device 6 is driven (that is, it is determined that the inner container 3 is empty). Until the time is up. Therefore, if the determination is positive at step S _9, the water supply indicating lamp 43 is turned on in step S _10, a warning to prompt the water supply to the user.

[0094] Step If a negative determination is made in S _9, if not (in other words if arrival signal from the water detecting means 31 in step S ₁₁ is outputted, the water detection means 3
1 is determined). Here, if a negative determination is returned to the step S _9,
If an affirmative determination, the process proceeds to step S _12, the driving of the pump device 6 is stopped.

Next, in step S ₁₃ , the internal time of the inner container 3 is determined based on the time data of the measurement timer (ie, the time t from the time when the pump device 6 starts driving until the time when the arrival signal is output from the water detecting means 31). The remaining amount L of hot water is calculated.
This calculation is performed in the same manner as in the first embodiment.

The remaining amount L calculated as described above is
In step S ₁₄ is displayed on the electronic display unit 41, then, energization is stopped to the coil 59 in step S ₁₅ (in other words, the changeover valve 53 is closed the recirculation passage 52), and returns to step S _1, The remaining amount detection control similar to that described above is continued.

As described above, in the present embodiment, the detection of the remaining amount in the inner container 3 is performed when water is supplied to the inner container 3 and immediately after the hot water in the inner container 3 is poured out. As a result, the remaining amount can be detected and displayed only at the time of water replenishment and immediately after pouring in which the remaining amount in the inner container 3 increases or decreases. can get. Therefore, power consumption can be saved. Other functions and effects are the same as those in the first and sixth embodiments, and thus description thereof is omitted.

In the present embodiment, the stop timing of the pump device 6 after the detection of the remaining amount is immediately after the arrival signal is output from the water detecting means 31. However, as in the second embodiment, the stop timing of the pump device 6 is the same. The time may be the time when the minimum set time ts required for the amount detection has elapsed.

Ninth Embodiment FIGS. 21 and 22 show an electric hot water storage container according to a ninth embodiment of the present invention.

In this case, the detection pipe 5c in the pouring passage 5
Is provided with a lower limit water level detecting means 50 for detecting the lower limit water level L ₀ in the inner container 3. The lower limit water level detecting means 50 is an optical sensor having a structure similar to that of the water detecting means 31, but when the hot water in the inner container 3 becomes lower than the lower limit water level, the output voltage from the optical sensor 50 becomes lower. Since the level changes from a low level to a high level, by sensing this, the lower limit water level can be detected. A water supply indicator lamp 43, which is a water supply required display means, is turned on by a detection signal from the optical sensor 50. By doing so, when the hot water in the inner container 3 is lower than the lower limit water level L _{0, a} signal is output from the optical sensor 50 and the water supply indicator lamp 43 is turned on, so that the empty detection of the inner container is easy. Can be. The other configuration and operation and effect are the same as those in the first and sixth embodiments, and thus the description is omitted.

[0101]

According to the first aspect of the present invention, a container body having an inner container, a lid of the container body, a heating means for heating the inner container, and hot water in the inner container to the outside. In an electric hot water storage container having a pouring passage for pouring out and a pump device for feeding hot water through the pouring passage, the electric hot water storage container is provided above a full position in the pouring passage, and is driven by the pump device. and water detection means for outputting an arrival signal when the water has reached, arrival signal is outputted by said water detecting means
Before the water is discharged outside, the operation of the pump device is stopped.
Control means for stopping , and remaining amount calculating means for calculating the remaining amount in the inner container based on the time from the start of driving of the pump device to the arrival signal output time from the water detecting means,
While attaching a remaining amount display means for displaying the remaining amount obtained by said residue amount calculating means, the pump device, the remaining
At the time of detection, the operation is performed at a low speed, and when the hot water in the inner container reaches the water detection means through the spout passage by driving the pump device, and when the arrival signal from the water detection means is output, The remaining amount in the inner container is calculated based on the time from the start of driving of the pump device to the time when the arrival signal is output from the water detecting unit, and the remaining amount thus determined is displayed on the remaining amount display unit. As a result, the remaining amount in the inner container is displayed in multiple stages (or continuously) by one water detecting means provided above the full position in the pouring passage.
Thus, there is an effect that a reliable remaining amount display can be obtained at low cost. In addition, the pump device must be
At low-speed operation, the system is operated at low speed.
At the time of detection, the water detection means
Time to reach the water can be extended,
There is also an effect that the accuracy of detection is improved.

According to the second aspect of the present invention , the cold storage container
Container body provided with usable inner container, and lid of the container body
Body, heating means for heating the inner container, and inside the inner container
A pouring passage for pouring hot water to the outside,
And a pump device for sending hot water through the inner container.
Electric hot water storage container with temperature sensor to detect
Above the filling position in the pouring passage.
At the time when water arrives by driving the pump device.
Water detection means for outputting a delivery signal, and driving of the pump device
From the start time to the arrival signal output time from the water detection means
To calculate the remaining amount in the inner container based on the time at
Calculating means and the remaining amount calculated by the remaining amount calculating means.
Correction based on temperature information from temperature sensor
Residual displaying means, the corrected residual by 該補 positive means
Amount display means is attached, and the contents are
The hot water in the vessel reaches the water detection means through the pouring passage,
When the arrival signal from the informing means is output, the pump
The arrival signal from the water detection means from the start of driving the device
The remaining amount in the inner container is calculated based on the time at the time of output.
And the remaining amount thus determined is the temperature from the temperature sensor.
Is corrected based on the degree information and displayed on the remaining amount display means.
So that it is higher than the filling position
The temperature is corrected by one water detection means provided.
Multi-stage (or continuous) accurate indication of the remaining amount in the container
It is possible to obtain a reliable display of the remaining amount at low cost.
It has the effect of being done.

According to the third aspect of the present invention , an inner container is provided.
Heating the container body, the lid of the container body, and the inner container
Heating means and for pouring out the hot water in the inner container to the outside
And a pump for feeding hot water through the pouring passage
An electric hot water storage container provided with
Provided above the full water level in the pump device,
Water detection that outputs an arrival signal when water arrives by driving
The water detection from the start of driving of the pump device.
Based on the time until the arrival signal output point from the intelligence means,
Remaining amount calculating means for calculating the remaining amount in the content container;
Remaining amount display means for displaying the remaining amount obtained by the calculating means;
And the water detecting means is provided in the pouring passage.
Branch above the installation site of the
And a return passage is provided at the branch of the return passage.
At the time of informing, only the circulation to the reflux passage side is allowed
A switching valve is provided, and the hot water in the inner container is
When the water reaches the water detection means through the discharge passage, the water detection
When the stage receives the arrival signal and starts driving the pump device,
Time from the point when the arrival signal is output from the water detection means
The remaining amount in the inner container is calculated based on
The remaining amount is displayed on the remaining amount display.
, 1 provided above the filling position in the pouring passage.
The water level in the inner container is displayed in multiple stages
Or continuous), low cost and reliable
There is an effect that a sufficient remaining amount display can be obtained. Moreover, the remaining amount
When the pump device is driven for detection, water detection means
The hot water that has passed through is returned to the inner container via the return passage.
I have to stop driving the pump device
Worries that hot water is poured out through the pouring passage
There is also an effect that disappears. In addition, hot water in pouring passage
Since it is returned to the inner container every time the remaining amount is detected,
When low-temperature hot water no longer accumulates in the pouring passage
In both cases, the circulation of hot water activates the hot water in the inner container,
There is also an effect that the taste of the fish is improved.

[Brief description of the drawings]

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

FIG. 2 is a perspective view of the electric hot water storage container according to the first embodiment of the present invention.

FIG. 3 is a perspective view showing an example of a water detecting means in the electric hot water storage container according to the first embodiment of the present invention.

FIG. 4 is a sectional view showing another example of the water detecting means in the electric hot water storage container according to the first embodiment of the present invention.

FIG. 5 is an electric circuit diagram showing an electric configuration of the electric hot water storage container according to the first embodiment of the present invention.

FIG. 6 is a flowchart of remaining amount detection control in the electric hot water storage container according to the first embodiment of the present invention.

FIG. 7 is a characteristic diagram showing the relationship between the time taken from the start of driving of the pump device to the time when water reaches the water detecting means and the remaining amount in the inner container when the water temperature is changed.

FIG. 8 is a flowchart of remaining amount detection control in the electric hot water storage container according to the second embodiment of the present invention.

FIG. 9 is an electric circuit diagram showing an electric configuration of an electric hot water storage container according to a third embodiment of the present invention.

FIG. 10 is a flowchart of remaining amount detection control in the electric hot water storage container according to the third embodiment of the present invention.

FIG. 11 is a longitudinal sectional view of an electric hot water storage container according to a fourth embodiment of the present invention.

FIG. 12 is an electric circuit diagram showing an electric configuration of an electric hot water storage container according to a fourth embodiment of the present invention.

FIG. 13 is a longitudinal sectional view of an electric hot water storage container according to a fifth embodiment of the present invention.

FIG. 14 is a vertical sectional view of an electric hot water storage container according to a sixth embodiment of the present invention.

FIG. 15 is a sectional view showing a structure of a switching valve in an electric hot water storage container according to a sixth embodiment of the present invention.

FIG. 16 is an electric circuit diagram showing an electric configuration of an electric hot water storage container according to a sixth embodiment of the present invention.

FIG. 17 is a flowchart of remaining amount detection control in the electric hot water storage container according to the sixth embodiment of the present invention.

FIG. 18 is a flowchart of remaining amount detection control in the electric hot water storage container according to the seventh embodiment of the present invention.

FIG. 19 is an electric circuit diagram showing an electric configuration of an electric hot water storage container according to an eighth embodiment of the present invention.

FIG. 20 is a flowchart of remaining amount detection control in the electric hot water storage container according to the eighth embodiment of the present invention.

FIG. 21 is a longitudinal sectional view of an electric hot water storage container according to a ninth embodiment of the present invention.

FIG. 22 is an electric circuit diagram showing an electric configuration of an electric hot water storage container according to a ninth embodiment of the present invention.

[Explanation of symbols]

1 is a container body, 2 is a lid, 3 is an inner container, 4 is a heating means,
5 is an injection passage, 5c is a detection tube, 5c ₁ is a _first detection tube, 5c
c ₂ is a second detection tube, 6 is a pump device, 14 is a full scale,
15 is a temperature sensor, 31 is a water detecting means, 38 is a first power supply section, 39 is a second power supply section, 41 is a remaining amount display means (electronic display section), 42 is a full water display means (full water display lamp), 43 is a full water display light. A required water supply display means (water supply indicator light), 47 is a microcomputer unit, 50 is a lower limit water level detecting means (optical sensor), 52 is a return passage, and 53 is a switching valve.

Claims (3)

(57) [Claims] 1. A container body having an inner container, a lid of the container body, a heating means for heating the inner container, and a pouring passage for discharging hot water in the inner container to the outside. An electric hot water storage container provided with a pump device for sending out hot water through the pouring passage, wherein the electric hot water storage container is provided above a full position in the pouring passage, and reaches when water reaches by driving the pump device. Water detecting means for outputting a signal, and the water detecting means
Before the water is poured out when the arrival signal is output by
Control means for stopping the driving of the pump device, and a remaining amount calculation for calculating a remaining amount in the inner container based on a time from a start time of the driving of the pump device to a reaching signal output time from the water detecting means. means and, attached Then together the remaining amount display means for displaying the remaining amount obtained by said residue amount calculation means
In addition, the pump device is operated at a low speed when the remaining amount is detected.
An electric hot water storage container characterized in that: 2. An inner container which can be used as a cold storage container.
Heating the container body, the lid body of the container body, and the inner container
Heating means for discharging hot water in the inner container to the outside
And a pom for feeding hot water through the pouring passage
And a temperature sensor for detecting the temperature of the inner container.
An electric hot water storage container comprising:
Provided above the full position to drive the pump device
Water detection means that outputs a reaching signal when more water arrives
And the water detecting means from the start of driving the pump device
Based on the time until the arrival signal output time from
Remaining amount calculating means for calculating the remaining amount in the container, and the remaining amount calculating means
The remaining amount obtained from the temperature sensor is
Correction means for correcting based on the information,
Remaining amount display means for displaying the Tadashisa remaining amount, characterized in that additionally provided an electrical hot water storage vessel. 3. A container body provided with an inner container, and the container body.
Lid, heating means for heating the inner container, and the contents
A pouring passage for pouring hot water in the vessel to the outside, and the pouring passage
Electric hot water storage with a pump device for sending hot water through a passage
A container, which is above a water-filled position in the pouring passage;
Provided, and more reaches the water to drive the pump device
A water detecting means for outputting a reaching signal at a point in time;
The arrival signal output from the water detection means
Calculates the remaining amount in the inner container based on the time until the force
The remaining amount calculating means, and the remaining amount calculated by the remaining amount calculating means.
In addition to the remaining amount display means for displaying the remaining amount,
In the note pouring passage, above the installation site of the water detection means
A return passage for branching and communicating with the inner container
And, at the time of detecting the remaining amount,
Features and to that electric hot water storage container in that a switching valve that allows only the flow of the return passage side.