JP3864926B2 - Energy-saving warming method and electric hot water storage container using it - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an energy-saving heat retention method and an electric hot water storage container to which the method is applied, and is used for, for example, an electric pot for home use.
[0002]
[Prior art]
Electric pots are widely used in homes, workplaces, cafeterias, etc., and are particularly highly dependent on the home, leaving the power turned on except for replacement of the liquid contents, and halfway through re-boiling operations during use In many cases, the heat insulation is continued except at the time of start-up and initial boiling by replenishment of the contents. However, although the capacity is large, the power consumption is comparable to a large refrigerator, which is a problem in terms of energy saving.
[0003]
Therefore, it has become possible to save power and save energy by reducing the heat retention temperature, including stopping energization, by setting the time of the timer during non-use hours when going to bed or going out. In addition, users who are concerned about power consumption often respond by meticulously by turning off the power or setting an energy-saving warming mode. However, this is troublesome because it requires a user's setting operation.
[0004]
  In order to solve this problem, power information at the time of power supply to the main unit side, which is different from power supply to the control system, is detected and stored in the memory, and the usage record is analyzed from the stored power information. As a result, it is known that the energization breaker is turned off during a time period when energization is not necessary (see, for example, Patent Document 1). Patent Document 1 discloses power information when energizing a main body, that is, average power per unit time, predetermined timing by setting a timer, in order to automatically determine and respond to a time zone for energy saving. Information such as instantaneous power, phase difference between voltage and current, and dynamic impedance is accumulated, and it is determined from the accumulated data whether it is a time zone in which it is not necessary to energize.
[Patent Document 1]
JP 2001-231682 A
[0005]
[Problems to be solved by the invention]
However, the power information at the time of energization to the main body detected and accumulated by the one described in Patent Document 1 includes energization information for initial water heating and normal warming, and there is a lot of accumulated information. In order to grasp the actual state of use, complicated operations are required, and accurate determination is difficult. In particular, if the user's usage pattern is to be grasped more correctly from long-term accumulated data such as in a non-volatile memory, the accumulated data will increase and it will become more difficult to grasp the actual state of use.
[0006]
In order to solve this problem, the present inventor conducted various experiments and repeated examinations.For energy-saving control of electric pots, it is easy to determine that the content liquid is discharged and determined as actual use. It was found that it was reasonable from the certainty of judgment.
[0007]
An object of the present invention is to provide an energy-saving and heat-retaining method capable of accurately saving energy by a simple determination operation based on such new knowledge, and an electric hot water storage container to which the energy-saving method is applied.
[0008]
[Means for Solving the Problems]
  In order to achieve the above-mentioned object, the energy-saving and warming method of the present invention is based on a discharge operation in which the contents are kept in a normal state in an electric hot water storage container or energy-saving and warmed at a temperature lower than the normal temperature. For actual use, the temperature near the discharge systemTemperature data that does not show a peak depends on whether or not there is a sudden riseAutomatically determine whether or not there is actual use, and this determinationIn a given periodOne feature is that a time zone suitable for energy saving and warming is determined based on the actual use history, set to a subsequent energy saving time zone, and when the energy saving time zone is reached, the warming temperature is changed from normal warming.
[0009]
  In such a configuration, the discharge system content liquid in the electric hot water storage container usually keeps the same amount as the hot water content liquid after boiling or while keeping warm. However, since the discharge system liquid is not heated by the heater, the temperature is lower than that of the hot water storage liquid. For this reason, each time the hot water content liquid is discharged into the discharge system, the temperature around the discharge system rapidly increases. Therefore, the temperature near the discharge systemExistence of rapid rise excluding temperature data that does not show a peakBy,Whether the hot water storage liquid is discharged or not isExcluding temperature changes such as when the temperature environment changesThis can be simply determinedIn a given periodIt is possible to easily and accurately determine a time zone suitable for energy-saving and warming from simple and small information related to the actual use history. Therefore, a large capacity is not required to determine the energy saving time zone from the actual use history over a longer period using a non-volatile memory or the like, and the determination can be performed with a simple operation, so that the cost can be reduced. The energy saving time zone determined in this way is set as the subsequent energy saving time zone, and when it becomes the energy saving time zone, the heat retention temperature is changed from the normal heat retention to change the energy consumption without excess or deficiency based on the actual usage history. Is realized. The change of the heat retention temperature in the energy saving time zone preferably includes a heating stop corresponding to long-term non-use or a temperature rise operation before returning to the normal heat retention.
[0010]
  As an electric hot water storage container that achieves such a method, the content liquid is heated by a heater so as to maintain the use state while maintaining the normal temperature or the energy saving temperature at a temperature lower than the normal temperature. In the electric hot water storage container, the discharge system temperature detecting means for detecting the temperature in the vicinity of the discharge system for discharging, and the temperature detected by the discharge system temperature detecting meansTemperature data that does not show a peak depends on whether there is a sudden riseJudgment was made by the actual use judging means for judging the presence or absence of actual use and the actual use judging means.In a given periodIt is equipped with an energy-saving warming control means that determines the time zone suitable for energy saving based on the actual usage history, sets it to the subsequent energy-saving time zone, and changes the warming temperature from normal warming when the energy-saving time zone comes One characteristic is enough.
[0011]
  The electric hot water storage container of the present invention is also an electric hot water container that is heated by a heater so that it is kept warm and energy-saving at a temperature lower than the normal warming while continuing to be used for discharge operation. In a hot water storage container, a circuit board that is located in the vicinity of the discharge system that discharges and is located inside the operation panel on the upper surface of the protruding portion that protrudes to the front of the container body and incorporates the discharge port portion, and has switches mounted on the upper surface. Discharge system temperature detection means for detecting the temperature mounted on the back side where the chip parts are mounted, and the detection temperature of the discharge system temperature detection meansTemperature data that does not show a peak depends on whether there is a sudden riseJudgment was made by the actual use judging means for judging the presence or absence of actual use and the actual use judging means.In a given periodIt is equipped with an energy-saving warming control means that determines the time zone suitable for energy-saving warming based on the actual use history, sets it to the subsequent energy-saving time zone, and changes the warming temperature from normal warming when the energy-saving time zone comes It has another feature.
  In such a configuration,
  In addition to the electric hot water storage container of the one feature described above, a circuit board on the side of the operation panel on the upper surface of the protruding portion to the front part of the container having the discharge port is used to use the discharge system temperature detecting means. By mounting, since it is provided in the vicinity of the discharge port without a special attachment member or wiring member, it is easy to detect the temperature in the vicinity of the discharge system without causing a cost increase. In addition, by mounting the discharge system temperature detection means on the back surface of the chip components mounted instead of the top surface on which the circuit board switches are mounted, the discharge system temperature detection means can be made into a chip-type thermistor to reduce both component and mounting costs. To do.
[0012]
In a further configuration in which the discharge system temperature detection means is mounted on an existing circuit board in the vicinity of the discharge system,
In order to use the discharge system temperature detecting means, it is provided without a special attachment member or wiring member by being mounted on an existing circuit board, so that it does not cause an increase in cost.
[0017]
Further objects and features of the present invention will become apparent from the following detailed description. Each feature of the present invention can be used alone or in combination in various combinations as much as possible.
[0018]
【Example】
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings, in order to understand the present invention. The following description is a specific example of the present invention and does not limit the scope of the claims.
[0019]
This embodiment is an example of a household electric pot, and an insulated container is used as the inner container. The heat insulating container of the example shown in FIG. 1 has a container 1 in which a stainless steel vacuum double container 3 is housed in an outer case 2 as an inner container, heats the content liquid by a heater 11 and stores hot water, and electrically drives the content liquid. The pump 26 and the manual pump 10 such as a manual bellows pump are used to discharge water to the outside through a pipeline type discharge system 25 to supply hot water for use. However, the present invention is not limited to this, and it is sufficient if the content liquid is heated by the heater 11 to be heated and stored while being kept warm or energy-saving, and used for use. The present invention is effective including tilting the container body 1 without using a manual pump, and it is also effective as a target even without performing boiling water. However, stainless steel has low thermal conductivity among metals, has sufficient bending rigidity and strength, and has a rust-preventing effect. It is suitable for an electric hot water storage container and suitable for providing the vacuum double container 3. Moreover, the vacuum double container 3 does not necessarily need to be accommodated in the exterior case 2 and can be shared by the exterior body. Further, the control board 33 equipped with the microcomputer 33a is used to perform the operation control according to the operation mode set in the power supply circuit board 27, the operation unit D and the initial setting, and this also includes the hardware circuit. In addition, the control means can employ various devices. The operation part D is composed of an operation panel 32 provided on the upper surface of the protruding part 31 that protrudes, for example, in a bowl shape to the front of the upper end of the container 1, and various switches 48 on the control board 33 provided on the inside thereof. In addition, it is possible to perform the on-operation by individually pushing by the operation means by the resin spring integrally formed on the operation panel 32 or the key member provided separately, but this is also essential in the present invention. There is no specific configuration in particular. The microcomputer 33a uses temperature information from the content liquid temperature detecting means 29 for detecting the temperature of the content liquid for boiling water, normal heat retention, and energy saving heat retention. The content liquid temperature detecting means 29 is an inner container sensor 9 individually applied at the center of a single bottom portion to which the heater 11 of the vacuum double container 3 as an inner container is applied.
[0020]
The electric kettle as the electric hot water storage container of the present embodiment is a variety of discharges as described above, particularly as an energy-saving heat-retaining method, with the content liquid kept in normal use or energy-saving warming at a temperature lower than normal heat-retaining. For actual use by operation, the presence / absence of actual use is automatically determined based on the temperature of the discharge system 25 or in the vicinity thereof. Even if there is no actual use, a time zone that is equal to or less than the predetermined number of times is determined and set to a subsequent energy saving time zone, and when the energy saving time zone is reached, the temperature keeping temperature is changed from the normal temperature keeping.
[0021]
Normally, as shown in FIG. 1, the discharge system content liquid 71a in the discharge system 25 in the electric pot maintains the same liquid volume as the hot water storage content liquid 71 after boiling or keeping warm. However, since the discharge system content liquid 71 a is not heated by the heater 11, the temperature is lower than that of the hot water storage content liquid 71. For this reason, each time the hot water storage liquid 71 is discharged to the discharge system 25, the temperature of the discharge system 25 and its surroundings rises. FIG. 5 shows an experimental example of the temperature change of each part of the discharge system 25 when the temperature is kept at 98 degrees, and FIG. 6 shows the experimental example of the temperature change of each part of the discharge system 25 when the temperature is kept at 90 degrees. 5 and 6, (1) is the back surface of the control board 33, (2) is the inside of the operation section box 101 that houses the control board 33 of the protrusion 31, and (3) is the surface of the discharge port section 25 c, (4) is the back surface of the power source / drive system board 27, and (5) is the surface of the electric pump 26. When the temperature is kept at 98 degrees, the influence of the discharge is large as the temperature is kept high, and one clear temperature peak is obtained by the discharge of the hot water storage liquid 71 at any point of (1) to (5). A clear temperature peak is obtained except for ▼, and even in the case of (4), the number and timing are indefinite, but a temperature peak that was not at the time of heat retention is obtained.
[0022]
Accordingly, whether or not the hot water storage liquid 71 has been discharged at the discharge system 25 or in the vicinity thereof is determined whether the discharge is performed by the electric pump 26, the manual pump 10, or the body 1 is tilted. Whether it is done or not can be determined simply. Further, it is possible to easily and accurately determine a time zone suitable for energy-saving and warming from simple and small information related to the determined actual usage history. Therefore, a large capacity is not required to determine the energy saving time zone from the actual use history over a longer period using a non-volatile memory or the like, and the determination can be performed with a simple operation, so that the cost can be reduced. The energy saving time zone determined in this way is set as the subsequent energy saving time zone, and when it becomes the energy saving time zone, the heat retention temperature is changed from the normal heat retention to change the energy consumption without excess or deficiency based on the actual usage history. Is realized. It is preferable that the change of the heat retention temperature includes a stop of heating corresponding to long-term non-use or a temperature raising operation before returning to the normal heat retention.
[0023]
As an electric hot water storage container which achieves such a method, the hot water storage content liquid 71 described above is heated by the heater 11 to continue boiling, normal heat retention, energy conservation warming at a temperature lower than normal heat retention, and continued use. 2, an ejection system sensor 72 provided as ejection system temperature detecting means for detecting the temperature of the ejection system 25 for performing the ejection or the vicinity thereof, as shown in FIG. 2, and the ejection system sensor as shown in FIG. Based on the detected temperature by 72, the presence / absence of actual use, that is, the result determination means 73 as the actual use determination means for determining the actual use progress result, and the actual use progress result determined by the result determination means 73 for energy saving. Energy saving warming system that determines the appropriate time zone and automatically sets it to the subsequent energy saving time zone, and automatically changes the warming temperature from normal warming when the energy saving time zone comes Suffice that a means 74.
[0024]
The discharge system temperature detection means 72 uses a thermistor or the like, and is a discharge system sensor 72 provided at a position as shown in FIG. 1, for example, which can detect the temperature of the discharge system 25 or the vicinity thereof. The energy-saving heat retaining control means 74 can be configured by a single circuit or device, or a combination of a plurality of circuits or devices. However, in this embodiment, as shown in FIG. 2, it is provided as an internal function of the operation control microcomputer 33a.
[0025]
In this embodiment, as shown in FIG. 2, the storage means 75 for accumulating the determined actual use results is provided, and the change in the heat insulation temperature depends on the actual use progress results accumulated in the storage means 75. Therefore, it is performed with different temperatures or temperature changes. As a result, when the time when there is no actual use is short, the energy-saving warming temperature is set slightly higher in consideration of the effect on the next use, and when the time when there is no actual use is long, more energy is saved by keeping the temperature lower, including stopping heating. There is no inconvenience in use by utilizing the difference in actual use history, such as eliminating the inconvenience of use by trying to start up to a predetermined temperature for the next use while trying to keep warm, and it is advantageous for energy saving It is possible to set a warm state The storage means 75 uses a non-volatile memory having a backup power source 76 as shown in FIG. 2, so that the stored contents can be kept even after the electric pot is turned off. In the past several days, weeks, weeks, months, months, and long-term data over the four seasons, the actual usage history of users, Alternatively, the usage pattern can be prepared and accurately determined.
[0026]
Further, the discharge system sensor 72 as the discharge system temperature detecting means is mounted on the control board 33 as an existing circuit board in the vicinity of the discharge system 25 as shown in FIG. As described above, since the ejection system sensor 72 is used without being attached to a special attachment member or wiring member by being mounted on the existing control board 33, it does not cause an increase in cost.
[0027]
Further, the control board 33 protrudes to the front part of the shoulder 6 of the container 1 and is located on the inner side of the upper surface of the protruding part 31 in which the discharge port 25c of the discharge system 25 is built. As a result, the control board 33 is located immediately above the discharge port portion 25c of the discharge system 25 built in the protruding portion 31 of the container 1, and the discharge system sensor 72 mounted on the control board 33 is located near the discharge port portion 25c. Therefore, it is easy to detect the temperature in the vicinity of the discharge system 25.
[0028]
Moreover, since the discharge system sensor 72 is provided on the back surface of the control substrate 33 as shown in the figure, and is positioned above the discharge system 25, more specifically, above the discharge port portion 25 c, It is easy to receive heat from the system 25, and the temperature of the discharge system 25 can be detected more easily.
[0029]
Here, the surface facing the control board 33 is mounted with hardware parts such as the switches 48 and a display lamp (not shown), whereas the back surface of the control board 33 is a chip such as a chip-type microcomputer 33a. By mounting the components on the surface and using the discharge-type sensor 72 with a chip-type thermistor or the like, both component costs and mounting costs can be reduced.
[0030]
In the example shown in FIG. 4, the heat conducting member 102 is sandwiched between the operation unit box 101 that accommodates the control board 33 and the discharge port part 25 c. Thereby, the response performance of the discharge system sensor 72 with respect to the temperature rise by discharge of the hot water storage liquid 71 at the discharge port 25c of the discharge system 25 can be enhanced. For example, it is preferable to use a silicon sheet for heat conduction as the heat conducting member 102. If a slightly thicker material is sandwiched by using elasticity, the operation portion box 101 and the discharge port portion 25c are not required to be specially formed. With both sides.
[0031]
As shown in FIG. 3, the operation unit 32 has a liquid crystal display unit 81 for displaying a set heat retention temperature, a current temperature, a current operation mode, a danger notification, a prompt for a necessary operation, etc. Discharge key 82 for discharging hot water 71 to supply hot water, lock / release key 83 for locking or unlocking the discharge operation by the discharge key 82, energy saving key 84 for manually setting the energy saving mode, normal boiling, re-boiling during energy saving warming A re-boiling key 85 for performing the operation, a selection key 86 for selecting whether the temperature is kept at 98 degrees or 90 degrees, a time for setting the timer, a lightweight cup key 87 for setting the discharge amount when a discharge operation is performed, and a set numerical value An up key 88 and a down key 89 are provided for up / down. Further, as a lamp display, an unlock lamp 91, a water supply notification lamp 92, an energy saving lamp 93, and the like are provided using LEDs.
[0032]
Here, the control example by the microcomputer 33a of the present embodiment will be described. As shown in the main routine of main control in FIG. 7, after the initial setting is performed by turning on the power, the input by various sensors and operations is performed. Output processing is performed. Next, display processing related to input / output and accompanying operation control is performed. Subsequently, a boiling process for initial boiling and re-boiling, a normal heat retention at 98 degrees and 90 degrees, and a heat retention process for lowering the temperature and performing manual settings including heating stop and energy-saving warming. Further, a discharge process by a discharge operation, an energy saving setting process for the automatic energy saving setting, and other processes are performed. Therefore, as long as there is no abnormality signal due to some abnormality and the power is not turned off, the processes after the input / output process are repeated.
[0033]
In the subroutine for performing the energy saving setting process, as shown in FIG. 8, when the energy saving setting flag remains 0 by the initial setting, the time measurement is started and the energy saving setting operation is automatically performed. If the energy saving setting is completed and the energy saving setting flag is 1, the process returns as it is.
[0034]
When the energy saving setting operation is started, it is determined whether or not the temperature of the discharge system 25 or in the vicinity is the discharge temperature, and each time the discharge temperature is reached, the current time is used as the actual time when the stored hot water content is discharged. Repeat storing in the storage means. As a result of this repetition, it is determined whether a predetermined period such as the date, week, month, season, etc. of energy saving judgment has passed from the time measurement result, and the discharge results stored in the storage means up to that point, that is, the actual use progress results Then, the energy saving time zone to be applied thereafter is set, and the energy saving setting flag is set to 1.
[0035]
If there is a discharge or re-boiling operation during the energy saving time zone, it is actually used in spite of the energy saving time zone, so the energy saving setting counter is incremented by 1 and the count reaches a predetermined number of times or more. Set the energy saving flag to 0. As a result, the energy saving setting that does not fit the actual situation is performed again. This redoing may be performed for the entire set energy saving time period, or may be performed only for the energy saving time period related to actual use.
[0036]
As shown in FIG. 9, the heat insulation processing subroutine determines whether or not it is an energy saving start time in one or a plurality of energy saving time zones set. If not, it is determined whether or not there is a manual operation for energy saving warming. If this is not the case, heat insulation is usually performed. If there is manual operation of energy-saving warming, the set energy-saving warming is performed, but if there is a discharge during energy-saving warming, energy-saving warming is canceled and normal warming is restored. When the energy saving start time in the set energy saving time zone is reached, the temperature is changed as described after the energy saving warming and the energy saving warming is started. When the energy saving end time is reached, the startup process to normal heat insulation is performed, and then the normal heat insulation is restored. If there is a discharge between the energy saving start time and the energy saving end time, apart from the redo control in the energy saving setting process, it returns to the normal heat retention and corresponds to actual use by discharge for the time being. It is convenient to keep the energy saving lamp 93 lit regardless of manual setting or setting. In the case of manual setting, notification can be made when there are users who are not involved in the setting, and in the case of setting, all users can be notified.
[0037]
Hereinafter, the specific configuration of the electric pot of the present embodiment will be described in more detail. The vacuum double container 3 is composed of a stainless steel inner cylinder 4 and an outer cylinder 5, and the heater 11 is a vacuum as described above. It is applied to the single bottom 3c of the double container 3 so that the heating efficiency does not decrease. The heater 11 can be used in combination with a water heater and a heat retaining heater having different capacities, or can be used individually. However, the heater 11 can be used in a known manner such as changing the duty ratio between the water heating mode and the heat retaining mode. It can also be used with different heat generation capacity. The outer case 2 that accommodates the vacuum double container 3 is made of synthetic resin, and the bottom portion and the trunk portion are integrally formed, and a separate shoulder portion 6 made of synthetic resin is fitted into the upper end of the barrel portion so as to be integrated. Thus, the vacuum double container 3 is accommodated and held. A discharge system 25 is connected to the single bottom of the vacuum double container 3, and the discharge system 25 rises between the vacuum double container 3 and the outer case 2, and a discharge port 25 d faces the front of the container 1. Yes. An electric pump 26 such as a centrifugal pump is provided in the middle of the discharge system 25, and the content liquid flowing into the discharge system 25 is sent out to the discharge port 25d and discharged. However, the method of the electric pump can be freely selected regardless of whether it is a pumping type or a pressurizing type. In addition, a manual pump 10 that employs a bellows pump or the like is provided on the lid 13 that covers the container opening 12 of the container 1 that leads to the mouth of the vacuum double container 3, and a vacuum is applied by pressing the pressing plate 61. Pressurized air is blown into the double container 3 to pressurize the hot water storage content liquid 71 and push it out through the discharge system 25 so that it can be discharged outside. The manual pump 10 has an advantage that hot water can be supplied by manually discharging the stored hot water content 71 without a power source.
[0038]
The rising portion 25a of the discharge system 25 is a transparent tube so that the liquid amount can be seen through the transparent liquid amount display window 62 of the container 1. However, the liquid amount of the content liquid can be detected and displayed step by step with a photocoupler or the like by the photocoupler or the like, and can also be used as liquid amount data for various controls. Further, the automatic detection of the liquid amount may be performed by a capacitance method, or the liquid amount is automatically determined by a temperature rise characteristic when the hot water storage liquid 71 is heated by the heater 11 or a temperature drop characteristic when the heating of the heater 11 is stopped. Can be detected.
[0039]
The lid 13 is formed with a vapor passage 17 for releasing the vapor from the vacuum double container 3 to the outside. The lid 13 is formed on the inner opening 17a of the position facing the vacuum double container 3 of the lid 13 and the outer surface exposed to the outside. It communicates with the outer opening 17b. In the middle of the steam passage 17, when the container body 1 rolls over and the stored hot water content liquid 71 enters, a safety path 17c is provided that delays reaching the outer opening 17b by temporarily storing or detouring it. . As a result, it is possible to take measures such as raising the container 1 before the container 1 rolls over and the content liquid flows out through the vapor passage 17. Further, when the container body 1 rolls over, the steam passage 17 is provided with a water stop valve 18 at the time of falling, which works by its own weight or the like so as to prevent the entering content liquid from proceeding forward. Is provided. In the illustrated embodiment, it is provided at one location just inside the inner opening 17a.
[0040]
The front portion of the lid 13 is provided with a lock member 21 that engages with the locking portion 19 on the shoulder member 6 side in the closed position and locks the lid 13 in the closed position, and the locking portion when the lid 13 is closed. The spring 22 is always urged to the locked position so as to automatically engage with the spring 19. Correspondingly, the lid 13 is provided with a lock release member 23 for releasing the lock by retracting the lock member 21. As shown in FIG. 1, the unlocking member 23 is of a lever type pivotally supported on the lid 13 by a shaft 24. By pushing down the front end 23a with a thumb or the like and rotating it counterclockwise, the locking member 21 is spring-loaded. It is possible to lift the lid 13 which has been unlocked by lifting the rear end 23b raised by the unlocking operation with another finger and opening it.
[0041]
In the space between the bottom of the outer case 2 and the bottom of the vacuum double container 3, a circuit box 28 that houses the power supply / drive system board 27 is installed together with the electric pump 26. In the illustrated embodiment, the circuit box 28 is integrally formed in the opening at the bottom of the outer case 2. The circuit box 28 is provided with a lid 60 that opens downward and closes it.
[0042]
The upper part of the discharge system 25 constitutes a discharge port portion 25c, which is an inverted U-shaped unit, at a portion between the projecting portion 31 of the container 1 and the pipe cover portion 2d on the exterior case 2 side. The part 25c is provided with a water stop valve 34a at the time of overturning, a water stop valve 34b at the time of forward tilt, and a discharge port 25d. The discharge port 25d is opened downward through the pipe cover portion 2d.
[0043]
A cover plate 36 is applied to the opening at the bottom of the outer case 2 from below by screwing or partial engagement, and a rotating seat ring 37 is supported on the outer periphery of the cover plate 36 so that it can rotate. When the vessel 1 is placed on a table surface or the like, it can be rotated lightly on the rotating ring 37 to change its orientation.
[0044]
According to the operation unit 32 as described above, the discharge key 82 is always operated in order to discharge the hot water content liquid 71, and the operation of the lock / release key 83 also indicates an intention to perform the next discharge operation. Therefore, the ejection operation should be performed with a probability of almost 100%, and an electrical signal related to the ejection operation can be obtained in any case. Further, even if the discharge is performed by the manual pump 10, an electrical signal for the discharge operation can be obtained if this is detected by a switch or a sensor.
[0045]
In view of this, the electric pot of the present embodiment is another energy-saving and heat-retaining method, in which the hot-water storage liquid 71 is used for the discharge operation while performing normal heat-retaining and energy-saving heat at a temperature lower than the normal heat-holding. Whether or not actual use is determined by one operation signal related to the discharge of the content liquid 71, a time zone suitable for energy saving is determined on the basis of the determined actual use history, and set to the subsequent energy saving time zone When the energy saving time comes, the temperature is changed from the normal temperature.
[0046]
Thus, the presence or absence of actual use in which the hot water storage liquid 71 is discharged can be simply automatically determined by one operation signal related to the discharge of the hot water storage liquid 71. Therefore, it is possible to easily and accurately determine a time zone suitable for energy-saving and warming from simple and less information. Therefore, a large capacity is not required for determining the energy saving time period from the actual use history over a longer period using a non-volatile memory or the like, and the determination can be performed simply and at a low cost. The energy saving time zone determined in this way is set as the subsequent energy saving time zone, and when it becomes the energy saving time zone, the heat retention temperature is changed from the normal heat retention to change the energy consumption without excess or deficiency based on the actual usage history. Is realized. It is preferable that the change of the heat retention temperature includes a stop of heating corresponding to long-term non-use or a temperature raising operation before returning to the normal heat retention.
[0047]
Here, the detection of the discharge temperature described above is performed by detecting a rapid temperature rise during a predetermined time, and the discharge of the hot water content liquid 71 is performed by any temperature change shown in FIGS. 5 and 6. It can be detected reliably. This also eliminates temperature data that does not show a peak, such as when the temperature environment changes by carrying the electric pot, and it is not necessary to handle unnecessary data. As a specific example, the temperature detected by the discharge system sensor 72 starts to rise after a certain time lag from the time of actual discharge, and shows a peak as shown in FIG. The peak continues when the temperature limit is reached. Therefore, as shown in FIG. 10A, while monitoring the temperature detected by the discharge system sensor 72, a timer for a predetermined time is started after detecting the minimum temperature, and the detected temperature is set to a predetermined temperature, for example 3 It is determined that there is a discharge when the temperature is raised by more than ° C., that is, the actual use. If this determination is made, the minimum temperature detection is reset for the next discharge determination, and the control is repeated. When the predetermined temperature does not rise and the time is up, it is assumed that there is no discharge, and the minimum temperature detection is reset for the next discharge determination, and the control is repeated.
[0048]
In addition, when the discharge is limited to the electric pump 26, the determination accuracy of actual use is improved if the discharge is determined based on two signals of the signal related to the discharge operation and the detected temperature by the discharge system sensor 72. For example, when a predetermined peak does not occur in the temperature detected by the discharge system sensor 72 even though there is a discharge operation signal, it is determined that there is a shortage of hot water content liquid or a failure is reported to the user by the notification means. Then, the control can be stopped by issuing an abnormal signal, and the safety of the electric pot itself and use can be achieved.
[0049]
Further, the discharge system sensor 72 provided on the control board 33 monitors the detected temperature while the discharge temperature is not detected as room temperature, and is used for various controls such as boiling water control, heat retention control, and liquid volume determination of the stored hot water content. be able to.
[0050]
By the way, in this embodiment, a dedicated energy saving key 84 is provided for manually selecting energy saving and warming, but this is omitted and different operations such as long pressing of other keys, multiple pressings, or other It is also possible to set energy-saving heat retention by specific operations such as simultaneous operation of multiple keys. FIG. 11 shows an example of a case where energy saving and warming can be selected by pressing a key for selecting warming at 98 degrees and 90 degrees for a longer time than usual. As shown in FIG. 11 (a), after the heat retention selection key is turned on, 1000 ms is set as a threshold value, and when it is turned off before that, it is determined as the heat retention selection, and each time such an operation is repeated, The selected temperature is stepped up and switched between 98 degrees and 90 degrees in a rotary manner, and when it is turned off for more than 1000 ms, it is determined as the selection of energy saving warming, and the process shifts to energy saving warming.
[0051]
In the example shown in FIG. 12, the buzzer is set to 1 when the heat selection key is turned on in either the heat insulation selection shown in FIG. 12 (a) by the heat insulation selection key or the energy saving heat selection shown in FIG. 12 (b). When it is turned off before 1000 ms, it is stepped up as shown in FIG. 12A to switch the normal temperature selection temperature. When the power is turned off for 1000 ms or longer, the buzzer sounds twice when the time reaches 1000 ms to inform the user that the energy-saving heat selection is selected, and to shift to energy-saving heat. This makes it easy to operate by notifying a difference between the selection of the heat retention temperature in the normal heat retention by one heat retention selection key and the energy saving heat retention, and can prevent the erroneous operation.
[0052]
In the example shown in FIG. 13, in addition to the control shown in FIGS. 11 and 12, the citric acid cleaning mode can be selected by simultaneously pressing and holding the reboiling key and the heat retention selection key. In this control, in order to select the citric acid cleaning mode, if you intend to press and hold the reboil key and the heat retention selection key at the same time, but the operation of the reboil key is insufficient and not effective, press and hold the heat retention selection key. It will be judged as the selection of energy-saving warming by Therefore, in this example, as shown in FIG. 13, when both the heat retention selection key and the reboil key are turned on and 1000 ms or more have elapsed, the citric acid cleaning mode is set. In conjunction with this, even if the re-boil key is detected while the heat retention selection key is being pressed, there is a history that the re-boiling key has been turned on even once when the heat retention selection key is turned on. For example, it is determined that the citric acid cleaning mode is being set, and waits until the heat retention selection key is pressed for 1000 ms or longer. When there is no history of turning on the reboiling key and the heat retention selection key is not pressed for 1000 ms or longer, the step is increased to switch the heat retention temperature in the normal heat retention. Of course, when the heat retention selection key is pressed and held for a long time, it is determined that the energy saving heat retention is selected.
[0053]
Note that the energy-saving time zone setting can be started manually. In this case, the clock function and calendar function are not used. It is also possible to cope with the repeated management of the passage of time corresponding to the delimiter.
[0054]
【The invention's effect】
  According to the energy-saving heat-retaining method of the present invention and the electric hot water storage container to which the energy-saving heat-retaining method is applied, the temperature in the discharge system or in the vicinity thereof is rapidly increased.Presence ofThe temperature data that does not show a peak, such as when the temperature environment changes, can be determined easily and accurately based on the small amount of information that excludes the actual use in which the hot water storage liquid has been discharged. Whether or not there is actual use based on the history of presence / absence of the presence or absence, even if it is less than the predetermined number of times, set the subsequent energy saving time zone, and when it becomes energy saving time zone, change the heat retention temperature from normal heat retention Energy saving without excess or deficiency is realized based on the past results. It is preferable that the change of the heat retention temperature includes a stop of heating corresponding to long-term non-use or a temperature raising operation before returning to the normal heat retention.
[0055]
  According to the electric hot water storage container of another feature of the present invention, in addition to the electric hot water storage container of one feature, the protrusion to the front portion of the container body having the discharge port built therein, in addition to using the discharge system temperature detecting means By mounting it on the circuit board on the side of the operation panel on the top surface of the top panel, it is provided in the vicinity of the discharge port without a special attachment member or wiring member, so that the discharge system can be used without particularly causing a cost increase. It is easy to detect the temperature in the vicinity. In addition, by mounting the discharge system temperature detection means on the back surface of the chip components mounted on the back instead of the top surface where the circuit board switches are mounted, the discharge system temperature detection means can be made into a chip-type thermistor to reduce both component and mounting costs. To do.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view showing one example of an electric pot according to an embodiment of an electric hot water storage container of the present invention.
FIG. 2 is a control circuit diagram of the electric pot of FIG.
3 is a plan view of an operation unit of the electric pot of FIG. 1. FIG.
4 is a partial cross-sectional view showing another example of the electric pot of FIG. 1. FIG.
5 is a graph showing the temperature change of each part of the discharge system due to the discharge of the hot water storage liquid when the electric pot of FIG. 1 is kept at 98 ° C. FIG.
6 is a graph showing a temperature change in each part of the discharge system due to discharge of the hot water storage liquid when the electric pot of FIG. 1 is kept at 90 ° C. FIG.
FIG. 7 is a flowchart of a main routine showing a main control example of the control circuit of FIG. 2;
FIG. 8 is a flowchart of an energy saving setting processing subroutine in FIG. 7;
9 is a flowchart of a heat retention processing subroutine in FIG. 7;
FIG. 10 shows a discharge temperature detection example in the discharge system, (a) is a flowchart showing a detection procedure, and (b) is a graph showing a change example of the detected temperature in the discharge system from the time of discharge operation.
FIG. 11 is a time chart showing an example of control when energy-saving warming is selected by a long press operation with a heat retaining selection key, in which (a) shows warming-temperature switching operation by warming selection, and (b) shows energy-saving warming selection. Indicates operation.
FIG. 12 is a time chart showing the control in the case of buzzer notification of the operation state in the control of FIG. 11, where (a) shows a heat insulation temperature switching operation by heat insulation selection, and (b) shows an energy saving heat insulation selection; Indicates operation.
FIG. 13 is a flowchart showing a control example when it is possible to select citric acid cleaning by simultaneously pressing and holding the heat retention selection key and the reboiling key in which the control shown in FIGS. 11 and 12 is performed.
[Explanation of symbols]
D Operation part
1 body
10 Manual pump
11 Heater
25 Discharge system
25c Discharge port
26 Electric pump
32 Operation panel
33 Control board
33a microcomputer
71 Contents of hot water storage
71a Discharge system content liquid
72 Discharge sensor
73 Actual use judgment means
74 Energy-saving warming control means
75 memory means
76 Backup power supply
82 Discharge key

Claims (3)

In the electric hot water storage container, the temperature of the liquid in the vicinity of the discharge system is shown in order to keep the contents in use and maintain the energy consumption at a temperature lower than the normal temperature and continue to use it for actual use by the discharge operation. If there is no temperature data, the presence / absence of a sudden rise is automatically determined based on the presence or absence of actual use, and the energy saving time is determined after determining the appropriate time zone for energy conservation and warming based on the actual use history for the determined period. An energy-saving and warming method, characterized in that the heat-retaining temperature is changed from normal heat-retaining when the energy-saving time zone is set. In an electric hot water storage container that is heated by a heater and is kept warm and energy-saving at a temperature lower than the normal temperature while continuing to be used for discharge operation.
The discharge system temperature detection means for detecting the temperature in the vicinity of the discharge system that performs the discharge, and the temperature data that does not show the peak of the temperature detected by the discharge system temperature detection means are determined based on the presence or absence of a rapid rise and the presence or absence of actual use is determined to the actual use determination unit sets the actual use energy-saving time period after it is determined the time zone that is suitable for energy saving insulation based on the elapsed record of actual use at a given time was determined by the determination means, at the energy-saving time period An electric hot water storage container comprising an energy-saving heat-retaining control means for changing the heat-retaining temperature from normal heat-retaining. In an electric hot water storage container that is heated by a heater and is kept warm and energy-saving at a temperature lower than the normal temperature while continuing to be used for discharge operation.
Discharge system temperature that is located in the vicinity of the discharge system for performing discharge and is located on the inner side of the operation panel on the upper surface of the container and is mounted on the back surface on which the chip parts of the circuit board with switches mounted on the upper surface are detected. Detection means, actual use determination means for determining presence / absence of actual use according to presence / absence of rapid rise, excluding temperature data not showing a peak of temperature detected by discharge system temperature detection means, and predetermined period determined by actual use determination means It is equipped with an energy-saving warming control means that determines the time zone suitable for energy-saving warming based on the actual usage history in and sets it to the subsequent energy-saving warming time zone, and changes the warming temperature from normal warming when the energy-saving time zone comes An electric hot water container characterized by that.

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