JPH08464A - Electric hot water storage container - Google Patents

Abstract

PURPOSE:To attain the heat insulation at a plurality kinds of heat insulating temperatures by providing an electric hot water storage container with a heat insulating temperature selecting means for arbitrarily selecting and setting any one of the plurality kinds of heat insulating temperatures and automatically setting a heat insulating temperature setting value to a minimum heat insulating temperature. CONSTITUTION:The electric hot water storage container capable of heat insulation has a water boiling heater 6A for heating water in the main hot water storage container 1 and controls to turn on the heater 6A based on the output of a temperature sensor 38 for detecting the temperature of the water in an inner container 4. In this case, a heat insulating temperature selecting and setting switch is installed on an operation panel 12 for arbitrarily selecting and setting any heat insulating temperature of a plurality kinds of predetermined heat insulating temperatures ranging from a low temperature to a high temperature whose temperature values are different from one another. The water boiled and heated in the inner container 4 is controlled so that it is maintained at a heat insulating temperature selected and set by the heat insulating temperature selecting and setting switch. At the time of beginning to turning on the heater, the heat insulating temperature set value of the heat insulating temperature selecting and setting switch can be automatically set to a minimum heat insulating temperature.

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 capable of retaining heat at a plurality of heat retaining temperatures.

[0002]

2. Description of the Related Art In recent years, for example, an electric hot water storage container capable of maintaining heat is often used in which a vacuum heat insulating container and a heating means such as a heater are combined. In such an electric hot water storage container, generally, a temperature sensor, a boiling water control means, a heat retention control means, etc. are provided, and first, the boiling water control means controls heating means such as a heater based on the output of the temperature sensor to control the state of water. Is heated to a predetermined temperature, for example, to a boiling state to perform boiling, and then the heat retention control means maintains the predetermined heat retention temperature.

By the way, the heat retention temperature kept by the heat retention control means is generally set to a high single temperature of about 90 ° C. from the time of product design, in which case, for example, coffee or The optimum temperature is when making instant noodles, but on the other hand, the temperature of the hot water is too high when putting in sencha or preparing milk for feeding, so wait a certain time after pouring. There is the inconvenience of having to cool down to an appropriate temperature before use.

Therefore, recently, a heat retention temperature selection setting means such as a heat retention temperature selection setting switch is provided, and two kinds of heat retention temperatures of low temperature (around 80 ° C.) and high temperature (around 90 ° C.) are used for the purpose of using the electric hot water storage container. There has been proposed a structure in which hot water at a desired temperature can be obtained by arbitrarily selecting and setting it according to the intended use.

However, in the case of adopting such a configuration, a new heat retention temperature is not reset unless an automatic reset system for resetting the previously selected setting state by turning off the power after the heat retention is completed is added. Then, there is a problem that the next hot water is heated and the heat retention state is influenced by the previous selection setting state. In particular, when the heat retention temperature selection setting means is composed of a mechanical changeover switch, it is difficult to realize an automatic reset system by turning off the power supply in terms of design. In addition, even if the heat retention temperature selection setting means is configured by an electronic switch that can be automatically reset by turning off the power, some users generally use it for almost the same purpose, and the heat retention temperature is set repeatedly at each boiling. It is inconvenient to do it again.

Under these circumstances, the low temperature as described above
In an electric hot water storage container equipped with a plurality of high temperature insulation temperature setting functions, if the new insulation temperature selection setting means is not operated at the start of energization, the insulation temperature on the high temperature side is automatically prioritized. .

[0007]

However, when the high temperature side heat retention temperature is always prioritized and set as described above, there are the following problems.

(1) As in the case of the single heat-retaining temperature described above, in the case of green tea or milk preparation, it takes time to cool with hot water, which is inconvenient and hot water of an optimum temperature cannot be obtained. Moreover, in that case, an unnecessary amount of heat retention heat is consumed.

(2) Even if a specific heat-retaining temperature is given priority, the heat-retaining temperature itself which should be preferentially set should be according to the purpose of use of the user. If the priority is set to, it is not possible to realize versatility according to the intended use of users having various intended purposes.

[0010]

SUMMARY OF THE INVENTION The present invention has been made for the purpose of solving the above problems, and is provided with the following means for solving the problems in order to achieve the above object. There is.

That is, the electric hot water storage container of the present invention comprises a hot water storage container, heating means for heating water in the hot water storage container, a temperature sensor for detecting the temperature of the water in the hot water storage container, and the temperature. Based on the output of the sensor, the temperature of the water in the hot water container is heated to a predetermined temperature by boiling water and heating means for controlling the boiling water, and a plurality of types from the low temperature side to the high temperature side, which have different predetermined temperature values, are determined. Insulation temperature selection setting means for arbitrarily selecting and setting any of the insulation temperatures, and water in the hot water container heated to a predetermined temperature by the boiling control means is selectively set by the heating temperature selection setting means. The warming temperature control means for maintaining the warming temperature and the warming temperature automatic setting means for automatically setting the warming temperature set value of the warming temperature selection setting means to the minimum warming temperature at the start of energization are configured. There.

Further, the electric hot water storage container of the present invention is a hot water storage container, heating means for heating water in the hot water storage container, a temperature sensor for detecting the temperature of the water in the hot water storage container, and the temperature. Based on the output of the sensor, the temperature of the water in the hot water container is heated to a predetermined temperature by boiling water and heating means for controlling the boiling water, and a plurality of types from the low temperature side to the high temperature side, which have different predetermined temperature values, are determined. Insulation temperature selection setting means for arbitrarily selecting and setting any of the insulation temperatures, and water in the hot water container heated to a predetermined temperature by the boiling control means is selectively set by the heating temperature selection setting means. Temperature control means for maintaining the heat retention temperature, the heat retention temperature automatic setting means for automatically setting the heat retention temperature set value of the heat retention temperature selection setting means to the heat retention temperature on the minimum temperature side at the start of energization, and the heat retention temperature automatic After the minimum warming temperature is automatically set by the setting means and the high warming temperature is selected and set by the warming temperature selection setting means, the automatic setting function of the minimum warming temperature by the warming temperature automatic setting means is canceled. Then, the automatic setting function releasing means for changing to the high temperature side heat retention temperature is provided.

Furthermore, the electric hot water storage container of the present invention is
A hot water storage container capable of retaining heat, a heating means for heating water in the hot water storage container, a temperature sensor for detecting the temperature of the water in the hot water storage container, and water in the hot water storage container based on the output of the temperature sensor. The boiling temperature control means for boiling and heating the temperature to a predetermined temperature, and any of the multiple types of warming temperature from the low temperature side to the high temperature side, which have different predetermined temperature values, are arbitrarily selected and set. The heat retention temperature selection and setting means, the heat retention control means for maintaining the water in the hot water container heated to a predetermined temperature by the water boiling control means at the heat retention temperature selected and set by the heat retention temperature selection setting means, and the energization start Insulation temperature automatic setting means for automatically setting the insulation temperature setting value of the insulation temperature selection setting means and automatic setting insulation temperature designation for arbitrarily specifying the insulation temperature to be automatically set by the insulation temperature automatic setting means It is constructed by providing a stage.

[0014]

The present invention has the following actions in response to the above configuration.

That is, in the configuration of the electric hot water storage container of the present invention, as described above, the hot water storage container, the heating means for heating the water in the hot water storage container, and the temperature of the water in the hot water storage container are detected. Temperature sensor, a water heating control means for heating the temperature of the water in the hot water container to a predetermined temperature based on the output of the temperature sensor, and a low temperature side having mutually predetermined temperature values. From the heat-retaining temperature selection setting means for arbitrarily selecting and setting one of the heat-retaining temperatures of the plurality of heat-retaining temperatures on the high temperature side, and the water in the hot-water storage container heated to a predetermined temperature by the water-heating control means is heated to the above The heat retention control means for maintaining the heat retention temperature selected and set by the selection setting means and the heat retention temperature when the heat retention temperature selection setting operation is not particularly performed by the heat retention temperature selection setting means at the start of energization. Retained temperature setting value of the selected setting means is to be preferentially set to a retained temperature of the coldest side of the plurality of types of thermal insulation temperature automatically the pre Ji fit determined by the action of the retained temperature automatic setting means.

Therefore, if the user does not select and set the desired heat retention temperature at the start of boiling water, the heat retention temperature on the lowest temperature side will always be automatically set, even in the case of green tea or milk preparation. It is very convenient because it does not require hot water cooling time, and it does not consume unnecessary heat retention.

Further, in the configuration of the electric hot water storage container of the present invention, as described above, the hot water storage container, the heating means for heating the water in the hot water storage container, and the temperature of the water in the hot water storage container are detected. Temperature sensor, a water heating control means for heating the temperature of the water in the hot water container to a predetermined temperature based on the output of the temperature sensor, and a low temperature side having mutually predetermined temperature values. From the heat-retaining temperature selection setting means for arbitrarily selecting and setting one of the heat-retaining temperatures of the plurality of heat-retaining temperatures on the high temperature side, and the water in the hot-water storage container heated and heated to a predetermined temperature by the water-heating controller is the heat-retaining temperature. Insulation control means for maintaining the insulation temperature selected and set by the selection setting means, and automatic insulation temperature setting for automatically setting the insulation temperature setting value of the insulation temperature selection setting means to the insulation temperature on the minimum temperature side at the start of energization And when the high temperature side heat retention temperature is selected and set by the heat retention temperature selection setting means after the lowest temperature side heat retention temperature is automatically set preferentially by the heat retention temperature automatic setting means, the heat retention temperature automatic setting means It is configured by releasing the automatic setting function of the minimum warm side heat retention temperature, and providing an automatic setting function releasing means for changing the set temperature to the maximum warm side heat retention temperature. , At the start of boiling water, unless the heat insulation temperature is selected and set, the heat insulation temperature is always automatically set to the lowest temperature side, and no time is required to cool water in the case of green tea or milk preparation. Therefore, it is very convenient and does not consume unnecessary heat retention.

However, even after the minimum warming temperature is automatically set by the above-mentioned warming temperature automatic setting means as described above, for example, if the user desires, the warming temperature is still preferably the high temperature side. When the warming temperature selection setting means is operated, the same warming temperature automatic setting function is canceled, and the lowest warming temperature that is automatically set preferentially at the start of energization is the relevant warming temperature among the plurality of kinds of warming temperatures. It is automatically changed to the high temperature side holding temperature.

Therefore, as a result, in this case, it is possible to realize the same beneficial effect as in the prior art such that re-boiling while keeping the temperature is short.

Further, in the configuration of the electric hot water storage container according to the present invention, a hot water storage container capable of keeping heat, a heating means for heating water in the hot water storage container, and a temperature sensor for detecting the temperature of the water in the hot water storage container. , A boiling water control means for boiling and heating the temperature of the water in the hot water storage container to a predetermined temperature based on the output of the temperature sensor, and a predetermined temperature value from a low temperature side to a high temperature side Insulation temperature selection setting means for arbitrarily selecting and setting any insulation temperature of a plurality of types of insulation temperature, and water in a hot water storage container heated and heated to a predetermined temperature by the boiling water control means by the heating temperature selection setting means A heat retention control means for maintaining the heat retention temperature selected and set, and a heat retention temperature automatic setting means for automatically setting the heat retention temperature set value of the heat retention temperature selection setting means at the minimum temperature side heat retention temperature at the start of energization, There is provided an automatic setting warming temperature designating means for arbitrarily designing the warming temperature to be automatically set by the warming temperature automatic setting means, for example, according to the user's request, and the warming temperature selection operation is not particularly performed at the start of the energization. The heat retention temperature that is automatically set when the temperature becomes the desired heat retention temperature specified by the user.

As a result, depending on the season or the place of use, if the purpose of use and the purpose of use are constant, it may be used for sencha / milk preparation,
Since it becomes possible to automatically set the priority warming temperature automatically in a versatile manner in accordance with various cases such as the case of having a special purpose such as coffee and int Ramen, it is very convenient in those cases.

[0022]

As a result of the above, according to the electric hot water storage container of the present invention, it is possible to establish both dedicated and general-purpose performance according to the user's purpose of use and purpose of use. Will be able to provide hot water of the optimum temperature,
The utility of the electric hot water storage container can be more effectively improved.

[0023]

【Example】

(Embodiment 1) FIGS. 1 and 2 show the entire structure of an electric hot water storage container and an operation panel portion having a function of retaining a plurality of temperatures according to Embodiment 1 of the present invention, and FIG. 4 shows the configuration of the control circuit of the electric hot water storage container, and FIG. 4 shows the control operation by the microcomputer control unit of the control circuit of FIG.

As shown in FIG. 1, for example, this electric hot water storage container comprises a container body 1 and a lid body 2 which is rotatably supported on an upper portion of the container body 1.

The container body 1 includes a cylindrical sheet metal outer case 3 forming an outer peripheral surface and a stainless steel inner container 4 forming an inner peripheral surface, and the bottom surface of the outer case 3 is
It is covered by a synthetic resin bottom member 5 having a cylindrical shape with a bottom.

An upwardly convex disk portion 4a is formed at the center of the bottom surface of the inner container 4, and the lower surface of the disk portion 4a is used to heat the water contained in the inner container 4. The main heater (boiling heater) 6A is attached. Further, a temperature sensor 38 having a heat-sensitive portion 38a in contact with the lower surface of the central portion of the bottom surface of the inner container 4 is provided on the central rear surface of the bottom portion which bulges slightly above the inner container 4.

Further, at a position near the peripheral edge of the bottom surface of the inner container 4 (that is, near the outer peripheral portion of the disk portion 4a),
The inlet portion 7a of the liquid pouring passage 7 for pouring the hot water after boiling has been opened. The outlet 7b of the liquid pouring passage 7 is connected to a pouring outlet 8 provided on one upper side of the container body 1 via a water level sensor (reference numeral 20 in FIG. 3) not shown.

Then, in the upstream portion of the liquid pouring passage 7,
Further, an electric hot water supply pump P for pumping water is provided, and the discharge amount of the electric hot water supply pump P depends on the operating state of a discharge amount variable switch (reference numeral 17 in FIGS. 2 and 3) not shown, as described later. By controlling the field voltage of the motor unit,
It is designed to be controlled in three levels, medium and large. The field voltage control of the motor section is performed by controlling the pump drive circuit via the microcomputer control unit 30. Further, reference numeral 9 is an electric circuit storage box provided with a control circuit as shown in FIG. 3, and 10 is a heat shield plate.

That is, in the electric hot water storage container according to the present embodiment, the content liquid contained in the inner container 4 is heated by the main heater (boiling heater) 6A after being energized to boil water, and After the bleaching is performed for a predetermined time, the warming heater (not shown in FIG. 1 (see reference numeral 6A) in FIG. 1 holds the preset warming temperature, and if necessary, the electric hot water pump. By operating P, the electric hot water supply pump P
As a result, the content liquid (that is, the hot water) W is automatically poured out to the outside from the pouring portion 8 via the liquid pouring passage 7. And the discharge amount at the time of pouring (the hot water supply amount per unit time)
Is set by the discharge amount variable switch (reference numeral 17 in FIGS. 2 and 3) as described above.

On the other hand, on the upper surface of the front end portion 2a of the lid body 2,
For example, an operation panel 12 including an operation state display section 13, an operation switch section 15 and the like as shown in FIG. 2 is provided.

The operating state display section 13 of the operation panel 12
Is, for example, boiling, descaling, set heat retention temperature (low temperature,
(High temperature), consisting of five display elements (light emitting diodes) 13a, 13b, 19a, 19b, 16 for displaying the respective operating states of the lock state, and the operation switch 15 part includes a reboil switch 15a, an unlock switch 15b, It comprises four switches, a discharge amount variable switch 17 and a heat retention temperature selection setting switch 18.

If the heat retention temperature selection setting switch 18 is not pressed at all after the start of energization, the heat retention state at the low temperature side of 60 ° C. is automatically set preferentially. , The heat retention temperature of high temperature side 95 ℃ is set,
If you press it again, it will return to 60 ℃. These settings are made by a heat retention temperature setting circuit in the microcomputer control unit 30 described later. Then, corresponding to the set state, the set state is displayed by lighting the heat retention temperature display elements 19a (60 ° C.) and 19b (95 ° C.) of the operation panel 12.

Next, the overall configuration of the control circuit (electrical circuit) of the electric hot water container of this embodiment shown in FIG. 3 will be described.

In the figure, reference numeral 6A is a main heater (water heater), 6B is a heat retaining heater (not shown in FIG. 1), and the main heater (water heater) 6A is connected to the main heater (water heater) 6A via a relay switch RS. AC power input from the AC power plug 31 is supplied to each of the heat retention heaters 6B via the triac 32.

The relay switch RS is a relay drive circuit 3
ON, O by relay coil RL excited by 6
The FF is controlled to control the energization state of the boiling water heater 6A, while the triac 32 has its firing angle controlled by the triac drive circuit 35 to arbitrarily control the amount of electric power supplied to the heat retaining heater 6B. Has become.

Further, reference numeral 30 is the microcomputer control unit described above, and the water temperature data TW of the temperature sensor 38 detected via the heat sensitive portion 38a and the reboil switch 1
5a, lock release switch 15b, discharge amount selection switch 1
7. Input the operation signal (ON, OFF signal) of each operation switch such as the heat retention temperature selection setting switch 18 to determine the water supply state, the water supply temperature, the boiling water or heat retention function, the heat retention temperature, the set discharge amount, etc. Depending on the determination result, the relay drive circuit 36, the triac drive circuit 35, or the pump drive circuit 27 is arbitrarily operated to perform the corresponding control, and the display elements 13a, 13b, 19a, 19b, 16 are also driven. The various operating states are displayed.

Reference numeral 27 denotes the above-mentioned pump drive circuit, which controls the field voltage applied to the drive motor of the electric hot water supply pump P as described above in accordance with the combination of the outputs of the discharge amount variable switch 17 and the microcomputer control unit. By controlling according to the discharge amount control signal supplied from 30, the pump rotation speed is varied to adjust the hot water supply amount.

Further, reference numeral 37 is a frequency synchronizing signal input circuit for detecting the power supply frequency (50/60 Hz) of the AC power supply and inputting it to the microcomputer control unit 30.
The microcomputer control unit 30 inputs the frequency synchronization signal and the detection signal of the temperature sensor 38 in synchronism with each other to determine the amount of water, and controls the heating amount of the main heater (boiling heater) 6A and the warming heater 6B corresponding thereto. Control the heating time. The same frequency synchronization signal is also used as a reference signal for timer counting. Note that F ₁ and F ₂ are fuses.

Next, the main heater from the start of boiling water (start of energization) to the heat retention by the microcomputer control unit 30.
The control operation of the (water heater) 6A and the heat retention heater 6B will be described in detail.

That is, first, when power is supplied to the AC power plug 31 of the electric hot water storage container at the start of boiling water, the entire control system shown in FIG. Etc. are cleared), and the preset heat retention temperature Ts of the heat retention temperature setting circuit is automatically set in preference to the low temperature side heat retention temperature Ts = 60 ° C. (steps S _{1 to} S ₂ ).

Next, by operating the heat retention temperature selection setting switch 18, the heat retention temperature Ts to the high temperature side (Ts = Ts = 9)
It is determined whether the temperature has been changed to 5 ° C. (step S ₃ ).

As a result, if the change operation to the high temperature side heat retention temperature (95 ° C.) is made, the process proceeds to step S ₄ to first input the output value TW of the temperature sensor 38.
(Step S _5), and subsequently determines whether the current coolant temperature based on the output value TW is equal to or higher than the high temperature side set retained temperature Ts (Ts = 95 ℃) (Step S ₅₎ to.

Then, when the judgment result is NO and the water temperature has not reached 95 ° C. in the initial boiling, the main heater (boiling heater) 6A is operated to execute the automatic boiling heating (step S ₆ ). As a result, the water in the hot water storage container reaches 100 ° C., and the bleaching is performed by continuing the boiling state within a predetermined time (step S ₇ ).

After that, it is again determined whether or not the change operation to the low temperature side heat retention temperature Ts (Ts = 60 ° C.) is made (step S ₈ ), and the low temperature side heat retention temperature Ts (Ts = 60).
When the temperature is not changed to (° C.) (NO), the main heater (boiling heater) 6A and the warming heater 6B are turned off within a predetermined time to reduce the water temperature, and the output value TW of the temperature sensor 38 is changed. When the temperature reaches 95 ° C., the ignition angle of the triac 32 is controlled to energize the heat retaining heater 6B to realize the heat retaining state of 95 ° C.
(Step S _9).

On the other hand, when the determination at step S ₈ is changed to YES at the low temperature side heat retention temperature Ts (Ts = 60 ° C.), the high temperature side heat retention temperature Ts is set after the removal of the chlorine in step S _7. Within a predetermined time longer than the time (Ts = 95 ° C.), the main heater (boiling heater) 6A and the heat retaining heater 6
When B is turned OFF to lower the water temperature and the output value TW of the temperature sensor 38 reaches 60 ° C., the ignition angle of the triac 32 is controlled to control the heat retention heater 6B.
Is energized to realize the heat retention state of 60 ° C. (step S ₁₀ ).

On the other hand, TW ≧ 95 in the above step S ₅
℃? If the current water temperature is higher than the high temperature side heat retention temperature of 95 ° C, it is confirmed whether or not the change operation to the low temperature side heat retention temperature (Ts = 60 ° C) has been made for some reason. in terms of the (step S _8), by controlling the heat retaining heater 6B via the triac 32 as described above to maintain the first time hot water temperature of the hot side retained temperature Ts = 95 ° C. when the change operation is not performed A heat retaining state is realized (step S ₉ ).

On the other hand, once the high temperature side heat retention temperature Ts was changed to 95 ° C. (YES in step S ₃ ), it was determined that the water temperature was actually 95 ° C. or higher (YES in step S ₅₎ . ), If the operation for changing to the low temperature side heat retention temperature Ts (Ts = 60 ° C.) is again performed for some reason (YES in step S ₈ ), the heat retention heater is heated for a predetermined time longer than the temperature of 95 ° C. The water temperature is 60 ° C by cutting 6B
After confirming that the low temperature side set temperature is 60 ℃
To realize the insulation state (step S _10).

On the other hand, on the contrary, when the change operation to the high temperature side heat retention temperature Ts = 95 ° C. is not made after the automatic setting to the low temperature side heat retention temperature determined as NO in the above step S ₃ , then input the output TW of the temperature sensor 38 (step S _11), and first current water temperature is judged whether a low-temperature side set retained temperature Ts = 60 ° C. or higher (step S _12).

[0049] Then, the judgment result is at the initial kettle that does not reach the still water temperature is 60 ° C. where it is determined NO, executes the automatic boiling heat actuates the main heater (boiler heaters) 6A (step S _13). As a result, the water in the hot water storage container reaches 100 ° C., and the bleaching is performed by continuing the boiling state within a predetermined time (step S ₁₄ ).

After that, it is again determined whether or not the change operation to the high temperature side heat retention temperature Ts (Ts = 95 ° C.) is made for some reason (step S ₁₅ ), and when the heat retention temperature is not changed (NO). ), The main heater (boiling heater) 6A and the warming heater 6B are turned off within a predetermined time to reduce the water temperature, and the output value TW of the temperature sensor 38 is 6
When the temperature reaches 0 ° C., the heat retaining heater 38 is energized to realize the heat retaining state of 60 ° C. (step S ₁₆ ).

On the other hand, YES in the determination in step S ₁₂ above.
When the water temperature is already set to the low temperature side preset heat retention temperature of 60 ° C. or higher, the process directly proceeds to step S ₁₅ without performing the automatic boiling operation and the bleaching operation, and the high temperature side heat retention temperature Ts = 95 ° C. on the change operation to makes a determination whether or not made, as in the case of the step S _8,
Realize a heat retention state according to the judgment result (step S
₁₆ , S ₁₇ ).

As described above, according to the configuration of the embodiment,
At the start of energization of the AC power supply plug 31 of FIG. 3 described above, particularly when the heat insulation temperature selection setting operation (60 ° C. or 95 ° C.) by the heat insulation temperature selection setting switch 18 is not performed, the heat insulation temperature selection setting is performed. The setting state of the switch 18 is automatically set to the low temperature side heat retention temperature (60 ° C.).

Therefore, unless the user performs a new selection operation of the heat retention temperature at the start of boiling water or from the start of boiling water to the completion of boiling water, the heat retention temperature on the low temperature side (60 ° C.) is always maintained. It will be set automatically, and it does not require time to cool with hot water even for sencha or milk preparation, which is very convenient and does not consume unnecessary heat retention.

As a result, according to the electric hot water storage container of the embodiment of the present invention, the hot water of the optimum temperature is provided when the purpose of use of the user is limited to the low temperature hot water such as milk preparation and sencha. As a result, the utility of the electric hot water storage container can be more effectively improved.

Of course, it is assumed that the set temperature is preferably the high temperature side (95 ° C.) according to the user's request. When the set temperature is changed to the high temperature side, the low temperature side heat retention temperature priority function is canceled. The preset temperature is arbitrarily changed to the high temperature side holding temperature (95 ° C.) of the two types of low temperature and high temperature holding temperatures.

Therefore, as a result, the versatility for other uses can be sufficiently ensured, and in this case, the same beneficial effect as the conventional one such as the re-boiling while keeping heat can be completed in a short time can be realized.

(Embodiment 2) FIGS. 5 to 7 show the structure of a control circuit unit of an electric hot water container according to Embodiment 2 of the present invention and its heat retention control operation.

In this embodiment, as shown in FIGS. 5 and 6, in addition to the structure of the first embodiment shown in FIGS. 1 to 3 described above, an automatic heat retention temperature designating switch 40 is further provided on the operation panel 12. By pressing the automatic heat retention temperature designating switch 40, the user can arbitrarily specify the heat retention temperature itself automatically set at the start of energization as described above according to the purpose of use and the purpose of use of the electric hot water storage container from the beginning. It is characterized by being able to do so.

The automatic heat retention temperature designating switch 40 has, for example, a cycle switch structure, and each time the switch is pressed, the low temperature side heat retaining temperature of 60 ° C. is changed to the high temperature side retaining temperature 95.
The designated temperature is sequentially set in the designated temperature range of ℃, and from the designated temperature of the high temperature side of 95 ° C. to the designated temperature of the low temperature side of 60 ° C.

Next, the microcomputer control unit 3 of this embodiment
The control operation of the main heater (boiling heater) 6A and the warming heater 6B from the start of boiling water (start of energization) to heat retention by 0 will be described in detail.

That is, first, when the AC power plug 31 of the electric hot water storage container is energized at the start of boiling water, the entire control system shown in FIG. Etc. are cleared). Then read the specified retained temperature of the automatic retained temperature setting switch 40 (step S _2), the setting retained temperature Ts of the retained temperature setting circuit for automatically setting to the read value (step S _3).

Next, it is judged whether or not the automatically set heat retention temperature Ts is the low temperature side heat retention temperature 60 ° C. (step S ₄ ).

As a result, the heat retention temperature Ts specified above is obtained.
If NO is determined to be the high temperature side temperature (95 ° C.) instead of the low temperature side temperature, the process proceeds to step S ₅ , where the output value TW of the temperature sensor 38 is input (step S 5 ₆ ) Then, based on the output value TW, it is determined whether or not the current water temperature is equal to or higher than the high temperature side preset heat retention temperature Ts (Ts = 95 ° C.) (step S ₆ ).

When the judgment result is NO and the water temperature has not reached 95 ° C. at the initial boiling, the main heater (boiling heater) 6A is operated to execute the automatic boiling heating (step S ₇ ). . As a result, the water in the hot water storage container reaches 100 ° C., and the bleaching is performed by continuing the boiling state within a predetermined time (step S ₈ ).

After that, for some reason, the lower temperature keeping temperature T
Determine whether or not the change operation to s (Ts = 60 ° C) has been performed.
(Step S ₉ ), when the temperature has not been changed to the low temperature side heat retention temperature Ts (Ts = 60 ° C.) (NO), the main heater (boiling heater) 6A and the heat retention heater 6B are energized within a predetermined time. Turn off to reduce the water temperature, and the temperature sensor 38
When the output value TW of the TAC reaches 95 ° C., the heat insulation heater 6 is controlled by controlling the firing angle of the triac 32.
The B is energized to realize the 95 ° C. heat retention state (step S ₁₀ ).

On the other hand, when the determination in step S ₉ is changed to YES to the low temperature side heat retention temperature Ts (Ts = 60 ° C.), the high temperature side heat retention temperature Ts is set after the calcination in step S ₈ is completed. Within a predetermined time longer than the time (Ts = 95 ° C.), the main heater (boiling heater) 6A and the heat retaining heater 6
When B is turned OFF to lower the water temperature and the output value TW of the temperature sensor 38 reaches 60 ° C., the ignition angle of the triac 32 is controlled to control the heat retention heater 6B.
Is energized to realize the heat retention state of 60 ° C. (step S ₁₁ ).

On the other hand, TW ≧ 95 in the above step S ₆
℃? If the current water temperature is higher than the high temperature side heat retention temperature of 95 ° C, it is confirmed whether or not the change operation to the low temperature side heat retention temperature (Ts = 60 ° C) has been made for some reason. (Step S ₉ ), the warming heater 6 B is controlled via the triac 32 as described above to maintain the hot water temperature of the high temperature side Ts = 95 ° C. for the first time when the changing operation is not performed. realizing insulation state (step S _10).

On the other hand, the automatically set heat retention temperature Ts designated above is the high temperature side heat retention temperature 95 ° C. (Y in step S ₄₎ .
(ES), it was determined that the water temperature was actually 95 ° C. or higher (YES in step S ₆ ), but after that, the operation was changed again to the low temperature side temperature keeping temperature Ts (Ts = 60 ° C.) for some reason. In the case (YES in step S ₉ ), after confirming that the water temperature has reached 60 ° C. by turning off the heat retention heater 6 B within a predetermined time longer than the time of 95 ° C., the low temperature side set temperature 60 A heat retention state of ℃ is realized (step S ₁₁ ).

On the other hand, on the contrary, at the time of automatic setting to the low temperature side heat retention temperature of 60 ° C. which is determined as YES in the above step S ₃ , the output TW of the temperature sensor 38 is subsequently input (step S ₁₂ ). First, it is determined whether or not the current water temperature is the low temperature side preset temperature retention temperature Ts = 60 ° C. or higher.
(Step S _13).

[0070] Then, the judgment result is at the initial kettle that does not reach the still water temperature is 60 ° C. where it is determined NO, executes the automatic boiling heat actuates the main heater (boiler heaters) 6A (step S _14). As a result, the water in the hot water storage container reaches 100 ° C., and the bleaching is performed by continuing the boiling state within a predetermined time (step S ₁₅ ).

After that, for some reason, the high temperature side heat retention temperature T
Determine whether or not the change operation to s (Ts = 95 ° C) has been performed.
(Step S ₁₆ ), when the heat retention temperature is not changed
(NO) indicates that the main heater (boiling heater) 6A and the warming heater 6B are turned off within a predetermined time to reduce the water temperature, and the output value TW of the temperature sensor 38 is 60 ° C.
Then, the heat-retaining heater 38 is energized to realize the heat-retaining state of 60 ° C. (step S ₁₇ ).

[0072] On the other hand, when the already water temperature YES in the determination in step S ₁₃ is in the low-temperature side set retained temperature 60 ° C. or more, without going through the automatic boiling operation and without chlorine operation, as the step S ₁₆ proceed to, after performing tentatively determines whether changing operation to the high-temperature side heat retaining temperature Ts = 95 ° C. is performed, similarly in the above step S _9, to realize the insulation state corresponding to the determination result ( Step S ₁₇ ,
S ₁₈ ).

As described above, according to the configuration of the embodiment,
At the start of energization of the AC power supply plug 31 of FIG. 3 described above, particularly when the heat insulation temperature selection setting operation (60 ° C. or 95 ° C.) by the heat insulation temperature selection setting switch 18 is not performed, the heat insulation temperature selection setting is performed. The setting state of the switch 18 is automatically set to the heat retention temperature (either 60 ° C. or 95 ° C.) arbitrarily designated by the user with the automatic heat retention temperature designation switch 40.

Therefore, if the user does not perform a new selection operation (change) of the heat retention temperature at the start of boiling water or from the start of boiling water to the completion of boiling water, the user always specifies it first. Insulation control will be performed at the street insulation temperature.

As a result, according to the constitution, when the use is constant depending on the season or the place of use, or when the use is mainly for sencha / milk preparation, coffee / intant ramen, etc. It is very convenient because the priority heat retention temperature can be set universally according to various cases.

As described above, according to the electric hot water storage container of the present invention, both dedicated and versatile performances can be ensured in accordance with the user's purpose of use and intended use, and it is optimal for various uses. The hot water of the temperature can be provided, and the utility of the electric hot water storage container can be more effectively improved.

In each of the above-mentioned embodiments, a plurality of heat retaining temperatures are described as low temperature and two types of high temperature, but it goes without saying that the heat retaining temperature may be three or more.

[Brief description of drawings]

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

FIG. 2 is a plan view showing a configuration of an operation panel section of the electric hot water storage container.

FIG. 3 is a system block circuit diagram showing a control circuit configuration of the electric hot water storage container.

FIG. 4 is a flowchart showing control contents of a control unit of the electric hot water storage container.

FIG. 5 is a plan view showing a configuration of an operation panel section of the electric hot water container according to the second embodiment of the present invention.

FIG. 6 is a system block circuit diagram showing a control circuit configuration of the electric hot water storage container.

FIG. 7 is a flowchart showing a control content of a control unit of the electric hot water storage container.

[Explanation of symbols]

6A is a boiling water heater, 12 is an operation panel, 13a is a boiling display element, 13b is a descaling display element, 15a is a reboiling switch, 17 is a discharge amount variable switch, 18 is a heat retention temperature selection setting switch, and 9a and 9b are Insulation temperature display element,
Reference numeral 30 is a microcomputer control unit, 31 is an AC power supply, 32 is a triac, 38 is a temperature sensor, 40 is an automatic preset heat retention temperature designating switch, and P is an electric hot water supply pump.

Claims (3)

[Claims] 1. A hot water storage container, a heating means for heating water in the hot water storage container, a temperature sensor for detecting the temperature of the water in the hot water storage container, and the hot water storage device based on the output of the temperature sensor. A boiling water control means for boiling and heating the temperature of water in a container to a predetermined temperature, and any one of a plurality of types of heat retention temperature from low temperature side to high temperature side, which have different predetermined temperature values. Insulation temperature selection setting means for selecting and setting arbitrarily, and insulation control for maintaining the water in the hot water container heated to a predetermined temperature by the boiling water control means at the heating temperature selected and set by the insulation temperature selection setting means An electric hot water storage container is provided with a means and a warming temperature automatic setting means for automatically setting the warming temperature set value of the warming temperature selection setting means to the minimum warming temperature at the start of energization. 2. A hot-water storage container capable of retaining heat, a heating means for heating water in the hot-water storage container, a temperature sensor for detecting the temperature of the water in the hot-water storage container, and the hot water storage based on the output of the temperature sensor. A boiling water control means for boiling and heating the temperature of water in a container to a predetermined temperature, and any one of a plurality of types of heat retention temperature from low temperature side to high temperature side, which have different predetermined temperature values. Insulation temperature selection setting means for selecting and setting arbitrarily, and insulation control for maintaining the water in the hot water container heated to a predetermined temperature by the boiling water control means at the heating temperature selected and set by the insulation temperature selection setting means Means, a warming temperature automatic setting means for automatically setting the warming temperature set value of the warming temperature selection setting means to the warming temperature on the minimum warming side at the start of energization, and the minimum warming side warming temperature by the warming temperature automatic setting means. When the high temperature side heat retention temperature is selected and set by the above-mentioned heat retention temperature selection setting means after the automatic setting, the automatic setting function of the minimum temperature side heat retention temperature by the heat retention temperature automatic setting means is canceled and the high temperature side heat retention temperature is set. An electric hot water storage container provided with means for canceling an automatic setting function. 3. A hot water storage container capable of retaining heat, a heating means for heating water in the hot water storage container, a temperature sensor for detecting the temperature of the water in the hot water storage container, and the hot water storage device based on the output of the temperature sensor. A boiling water control means for boiling and heating the temperature of water in a container to a predetermined temperature, and any one of a plurality of types of heat retention temperature from low temperature side to high temperature side, which have different predetermined temperature values. Insulation temperature selection setting means for selecting and setting arbitrarily, and insulation control for maintaining the water in the hot water container heated to a predetermined temperature by the boiling water control means at the heating temperature selected and set by the insulation temperature selection setting means Means, and a warming temperature automatic setting means for automatically setting the warming temperature set value of the warming temperature selection setting means at the start of energization,
An electric hot water storage container comprising: an automatically set heat retention temperature designating means for arbitrarily designating a heat retention temperature to be automatically set by the heat retention temperature automatic setting means.