JPH06117691A - Electric warm water machine - Google Patents

Abstract

PURPOSE:To provide an electric warm water machine in which heating of water can be controlled by judged result by automatically judging whether a resident is absent or present according to sensing of locking state of an electric lock provided at an entrance door. CONSTITUTION:The electric warm water machine comprises a heater 2 arranged in a tank 1, a controller 12 for controlling energization of the heater 2 and heating of water in the tank 1, and lock detecting means 16 for detecting a locked state of an electric lock 15 provided at an entrance door 14, wherein it is so controlled that, when the means 16 does not detect an 'unlock' signal of the lock 15, heating of water is not conducted, while when the means 16 detects the 'unlock' signal of the lock 15, water is heated according to midnight power time zone.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric water heater,
More specifically, the present invention relates to an electric water heater that controls the boiling of water to save electricity when absent.

[0002]

2. Description of the Related Art FIG. 15 is a diagram showing the construction of a conventional electric water heater. In the figure, 1 is a tank for storing hot water, 2 is a heater arranged in the tank 1 for heating the water in the tank 1, 3 is a water supply pipe connected below the tank 1 and supplying water into the tank 1, A manual valve 4 for water supply is connected, and a water pipe or the like serving as a water source is connected to the tip portion. Reference numeral 5 is a hot water supply pipe connected to the upper part of the tank 1 for supplying hot water boiled in the tank 1, to which an air vent valve 6 and a safety valve 7 are connected, and a faucet (not shown) is connected to the tip end. ing.
A drain pipe 8 is connected to the lower side of the tank 1 to drain the water in the tank 1, and a manual drain valve 9 is connected to the drain pipe 8. Reference numeral 10 is a drainage channel, and 11 is a pipe for draining the expansion of the volumetric expansion of water caused by boiling water, which is connected to the safety valve 7. The tips of the pipe 11 and the drainage pipe 8 are guided to the drainage channel 10. There is.

Reference numeral 12 is a control device for controlling the boiling of the electric water heater. Reference numeral 13 is a temperature sensor arranged below the tank 1 for detecting the temperature of water in the tank 1. The heater 2 and the temperature sensor 13 are control devices. 12 and is configured to control power supply to the heater 2 based on information from the temperature sensor 13.

The electric water heater thus constructed is
With the electric water heater closed with the drainage manual valve 9 and the water supply manual valve 4 open, water is supplied from the water supply pipe 3 into the tank 1, and the air in the tank 1 is discharged from the air vent valve 6. Then, when the tank 1 is full of water and the time zone of midnight power (23:00 to 7:00 of the next morning), power is supplied to the heater 2 to heat the water, and the temperature sensor 13 causes the temperature of the water in the tank 1 to rise. While detecting, boil to the preset boiling temperature. At this time, as the temperature of the water in the tank 1 rises, the volume of water expands and the internal pressure in the tank 1 rises.
The expanded water is drained from the safety valve 7 through the pipe 11 to the drain groove 10 so that an unnecessary pressure is not generated in the tank 1.

When the water in the tank 1 boils up, the heater 2
The power supply to the electric water heater is cut off so that the electric water heater can be supplied with hot water from the hot water supply pipe 5. When hot water is supplied from the hot water supply pipe 5,
At the same time, the supplied water is supplied from the water supply pipe 3 into the tank 1, and the above-described water boiling operation of the electric water heater is repeated.

If the electric water heater is not used for a long period of time, for example, for one month or longer, various bacteria will propagate in the water in the tank 1 and become unsanitary. To prevent this, a safety breaker (not shown) is provided. (3) is cut off so that power is not supplied to the heater 2, and the manual valve 4 for drainage is closed and then the manual valve 9 for drainage is closed.
Open all the water in the tank 1 from the drain pipe 8 to the drain 1
Drain to 0.

[0007]

In the conventional electric water heater as described above, the water in the tank 1 is boiled to the set boiling temperature in the midnight power time zone so that the hot water can always be supplied to travel or on a business trip. When leaving the house for a long period of time, such as when going out, after manually shutting off the power to the heater 2, the water in the tank 1 is drained and the boiling of water is stopped. However, since it is necessary to manually shut off the electric power to the heater 2 and drain the water every time when going out, it is troublesome, and when the user forgets to drain the water when going out, or when he / she is away for a short period of time. In such a case, the water in the tank 1 is boiled up as usual even during absence, resulting in a waste of electric power and was uneconomical.

The present invention has been made in order to solve the above problems, and automatically detects whether the user is out or at home by detecting the lock state of an electric lock provided on the entrance door, and is out. The purpose of the invention is to provide an electric water heater which can stop the boiling of water, or can boil water while saving power, or can automatically supply and drain water.

[0009]

An electric water heater according to the present invention comprises a heater disposed in a tank, a controller for controlling energization of the heater and boiling of water in the tank, and the like. The lock detection means for detecting the lock state of the electric lock provided at the entrance door is provided, and when the lock detection means does not detect the "unlock" signal of the electric lock, the water is not boiled and the lock detection means When the "unlock" signal of the electric lock is detected, the water is controlled to be boiled up according to the midnight power time zone.

Further, the heater, the control device, the lock detecting means, and the invalid time counting means for counting the invalid time for invalidating the output signal from the lock detecting means are provided, and the control device controls the invalid time counting means. If the lock detection means does not detect the "unlock" signal of the electric lock between the end of counting and the end of the midnight power hours, the water is not boiled and the lock detection means does not When a "lock" signal is detected, the water is controlled to be boiled according to the midnight power time zone.

Further, a heating heater, a control device, a lock detection means, and an invalid time counting means are provided, and from the time the control device finishes counting by the invalid time counting means to the end of the midnight power time zone, When the lock detection means does not detect the "unlock" signal of the electric lock, it does not boil water,
When the lock detection means detects the "unlock" signal of the electric lock, it controls to boil water regardless of the time zone.

Further, a heating heater, a control device, a lock detection means, an invalid time counting means, and a residual hot water amount detecting means for detecting the residual hot water amount in the tank are provided, and the control device counts by the invalid time counting means. If the lock detection means does not detect the "unlock" signal of the electric lock from the end to the end of the midnight power time zone, the water is not boiled and the lock detection means "unlock" the electric lock. When a signal is detected, the amount of remaining hot water in the tank is detected by the amount of remaining hot water detection means.If the amount of remaining hot water is small, the water is boiled regardless of the time zone. It controls to boil water.

Further, a heating heater, a control device, a lock detecting means, an invalid time counting means, and a period counting means for counting a period during which boiling is not performed are provided.
If the lock detection unit does not detect the "unlock" signal of the electric lock between the end of the midnight power time zone after the control unit finishes counting by the dead time count unit, the water is not boiled and the lock is released. When the detection means detects the "unlock" signal of the electric lock, the count period of the period counting means is compared with the set period, and if the count period exceeds the set period, the water is boiled up regardless of the time zone. If the counting period does not exceed the set period, the water is controlled to be boiled in the midnight power time zone.

Further, the heater, the control device, the lock detecting means, and the effective time counting means for counting the time during which the output signal from the lock detecting means is effective are provided, and the control device counts by the effective time counting means. By the time the lock detection means does not detect the "unlocked" signal of the electric lock, the water is not boiled, and when the lock detection means detects the "unlocked" signal of the electric lock, the night-time power is turned on. It is controlled to boil water depending on the time zone.

Further, a heating heater, a control device, a lock detecting means, and an effective time counting means are provided, and the lock detecting means turns off the "unlock" of the electric lock by the time the control device finishes counting by the effective time counting means. When the "lock" signal is not detected, the water is not boiled, and when the lock detection means detects the "unlock" signal of the electric lock, it is controlled to boil the water regardless of the time period. is there.

Further, a heater, a control device, a lock detecting means, an effective time counting means, and a residual hot water amount detecting means for detecting the residual hot water amount in the tank are provided, and the control device counts by the effective time counting means. By the end, when the lock detection means does not detect the "unlocked" signal of the electric lock, it does not boil water, and when the lock detection means detects the "unlocked" signal of the electric lock, it detects the amount of remaining hot water. The amount of remaining hot water in the tank is detected by means, and when the amount of remaining hot water is small, water is boiled up regardless of the time zone, and when the amount of remaining hot water is large, water is boiled up at midnight power hours. To do.

Further, a heater, a control device, a lock detecting means, an effective time counting means, and a period counting means for counting a period during which boiling is not performed are provided.
By the time the control device finishes counting by the effective time counting means, if the lock detecting means does not detect the "unlock" signal of the electric lock, the water is not boiled and the lock detecting means detects the "unlock" of the electric lock. When a signal is detected, the count period of the period counting means is compared with the set period, and if the count period exceeds the set period, water is boiled regardless of the time zone, and the count period exceeds the set period. If not, it is controlled so as to boil water according to the midnight power hours.

Further, the control device controls the boiling temperature of the water in the tank based on the information from the lock detecting means and the counting means.

Further, a water supply pipe connected below the tank and having an automatic valve for water supply, a drainage pipe connected below the tank and having an automatic valve for drainage, and a safety valve and the like connected above the tank. Hot water supply pipe, heater installed in the tank, automatic valve for water supply, automatic valve for drainage, control device for controlling electricity to the heater and boiling water in the tank, and An exchange period counting means for counting the exchange period of water is provided, and the controller controls the automatic water supply valve and the automatic drain water valve based on the information from the exchange period counting means and the lock detection means to supply and drain the water in the tank. To control.

[0020]

[Function] When the tank is full of water and the electric power is in the middle of the night, the water in the tank is boiled to the set temperature so that hot water can be supplied. Then, the lock detection means waits for the "unlock" signal of the electric lock, and when the "unlock" signal is detected, it automatically determines that the user is at home, waits for the midnight power hours, and then waits for the water in the tank. When the "unlock" signal is not detected and the electric lock remains "locked", it is automatically judged to be out of service, and power is saved without boiling water.

Further, the heater, the control device, the lock detecting means, and the invalid time counting means for counting the invalid time for invalidating the output signal from the lock detecting means are provided, and the control device operates by the invalid time counting means. If the lock detection means does not detect the "unlock" signal of the electric lock between the end of counting and the end of the midnight power hours, the water is not boiled and the lock detection means does not When the "lock" signal is detected, the water is boiled without wasting the power by controlling the water to be boiled in the midnight power time zone.

Further, if the lock detecting means does not detect the "unlock" signal of the electric lock after the control device finishes the counting by the dead time counting means until the end of the midnight power time zone, the water is boiled. When the lock detection means detects the "unlock" signal of the electric lock, the water is boiled up regardless of the time of day by controlling the water to be boiled up regardless of the time of day. It is possible and convenient.

Further, a heating heater, a control device, a lock detection means, an invalid time counting means, and a residual hot water amount detection means are provided, and after the control device finishes the counting by the invalid time counting means, the midnight power time zone. By the end of the time, when the lock detection means does not detect the "unlocked" signal of the electric lock, water is not boiled, and when the lock detection means detects the "unlocked" signal of the electric lock, the amount of remaining hot water The amount of remaining hot water in the tank is detected by the detection means.When the amount of remaining hot water is small, water is boiled up regardless of the time of day, and when the amount of remaining hot water is large, water is boiled up at the midnight power hours. By controlling, the water is boiled up without wasting the power, and there is no worry of running out of water.

Further, a heater, a control device, a lock detecting means, an invalid time counting means, and a period counting means for counting a period during which boiling is not performed are provided.
If the lock detection unit does not detect the "unlock" signal of the electric lock between the end of the midnight power time zone after the control unit finishes counting by the dead time count unit, the water is not boiled and the lock is released. When the detection means detects the "unlock" signal of the electric lock, the count period of the period counting means is compared with the set period, and if the count period exceeds the set period, the water is boiled up regardless of the time zone. If the counting period does not exceed the set period, the boiling of water can be economically performed by controlling the boiling of water in the midnight power time zone.

Further, a heating heater, a control device, a lock detecting means, and an effective time counting means are provided, and by the time the control device finishes counting by the effective time counting means,
When the lock detection means does not detect the "unlock" signal of the electric lock, the water is not boiled up. When the lock detection means detects the "unlock" signal of the electric lock, the water is boiled by the midnight power time zone. By controlling so as to raise the water, it is possible to surely judge whether the user is at home or not, and to boil the water.

Further, when the lock detecting means does not detect the "unlock" signal of the electric lock before the control device finishes the counting by the effective time counting means, the water is not boiled and the lock detecting means is turned on. When the "unlock" signal of the lock is detected, the water is boiled up regardless of the time of day so that it is possible to judge whether it is at home or not at home, and the water is not affected by the time of day. It is convenient to be able to boil.

Further, a heating heater, a control device, a lock detecting means, an effective time counting means, and a residual hot water amount detecting means are provided, and the lock detecting means is provided until the control device finishes counting by the effective time counting means. Does not boil water when the electric lock's "unlock" signal is not detected, and when the lock detector detects the electric lock "unlock" signal, If the amount of remaining hot water is small, the water is boiled up regardless of the time of day, and if the amount of remaining hot water is large, the water is boiled up at the midnight power hours to control whether home or absent. The water can be boiled economically by making sure judgment, and there is no worry of running out of water.

Further, a heating heater, a control device, a lock detecting means, an effective time counting means, and a period counting means are provided, and the lock detecting means operates until the control device finishes counting by the effective time counting means. "Unlock" of electric lock
When the signal is not detected, the water is not boiled, and when the lock detection means detects the "unlock" signal of the electric lock, the count period of the period counting means is compared with the set period, and the count period is the set period. If it exceeds the limit, water is boiled regardless of the time zone, and if the counting period does not exceed the set period, it is controlled so that the water is boiled according to the midnight power time zone. It is convenient because it is possible to make a reliable judgment and to boil water economically.

Further, the control device controls the boiling temperature of the water in the tank based on the information from the lock detecting means and the counting means, so that the boiling temperature of the water can be changed between the absence and the home so that the electric power can be increased. Saves money
Hot water can be used immediately after returning home.

Further, a water supply pipe having an automatic water supply valve, a drainage pipe having an automatic drainage valve, a hot water supply pipe to which a safety valve or the like is connected, a heater, an automatic water supply valve, and an automatic drainage valve. ,
A control device for controlling energization of the heater and boiling of water in the tank, and a replacement period counting means for counting the replacement period of water in the tank are provided, and the control device has a replacement period counting means and a lock detecting means. By controlling the automatic water supply valve and the automatic drain water valve based on the information from the controller to control the water supply / drainage of the water in the tank, it is convenient to use the water sanitarily and without waste.

[0031]

【Example】

Example 1. FIG. 1 is an explanatory diagram of the configuration of an embodiment of the present invention. Note that the same or corresponding portions as those of the conventional example described in FIG.

In the figure, 14 is an entrance door and 15 is an unlocking switch (not shown) incorporated in the entrance door 14.
The electric lock 15 is connected to the control device 12, and when the unlocking switch of the electric lock 15 which is normally "locked" is pressed, the electric lock 15 becomes "unlocked" and the front door 14 is opened. Upon opening, an "unlock" signal is sent to the controller 12,
When the front door 14 is closed, the electric lock 15 is "locked" again. Reference numeral 16 denotes a lock detection unit that detects an “unlock” signal output from the electric lock 15, and is provided in the control device 12. The controller 12 is provided with a temperature setting unit (not shown) that sets the boiling temperature of the water in the tank 1.

Next, the operation of the first embodiment will be described with reference to the flowchart of FIG. First, the water supply manual valve 4 is set to "open" and the drainage manual valve 9 is set to "close", and water is supplied from the water supply pipe 3 into the tank 1 to fill the tank. Then, in the midnight power time zone (for example, from 23:00 to 7:00 the next morning), the controller 12 supplies power to the heater 2 to heat the water, and boil it to the boiling temperature set in advance by the temperature setting unit. The hot water supply from the hot water supply pipe 5 is enabled.

Then, when the midnight power time period ends (step 30), the lock detection unit 16 of the control device 12 causes the electric lock 1
5, the detection of the "unlocked" signal of 5 is started, and when the lock detection unit 16 detects the "unlocked" signal of the electric lock 15 (step 33),
The electric water heater automatically determines that this "unlock" signal is due to returning home, waits for the midnight power time period, and then boiled the water in the tank 1 (steps 34 and 35). When the "unlock" signal is detected in the midnight power time zone, the water boiling is immediately started (steps 36 and 3).
7, 35).

On the other hand, if the "unlocked" signal is not detected between the end of the midnight power time zone and the end of the next midnight power time zone, it is automatically determined that the user is out. The electric power is saved as it is without boiling water (steps 30, 33, 36, 37, 38).

Example 2. In the second embodiment, in FIG. 1, the control device 12 is provided with an invalid time counter timer 17 for counting the time for invalidating the signal of the electric lock 15 detected by the lock detection unit 16, and the count set time is set. Is, for example, 5 hours from 7:00 am to noon when the midnight power time zone (between 23:00 and 7:00 the next morning) ends, and when the count of the invalid time counter timer 17 is within 5 hours, it is detected by the lock detection unit 16. The "unlock" signal becomes invalid, and after 5 hours, the "unlock" signal becomes valid and the water in the tank 1 is boiled. The operation will be described below with reference to the flowchart of FIG.

In this embodiment as well, as in the case described in the first embodiment, water is supplied into the tank 1 to boil it in the midnight power time zone to enable hot water supply. When the midnight power time period ends (step 30), the dead time counter timer 17 starts counting the dead time of the signal of the electric lock 15, that is, 5 hours (step 31), and the dead time counter timer 17 counts. When the lock detector 16 detects the "unlock" signal of the electric lock 15 within 5 hours, that is, in the morning, the electric water heater automatically determines that this signal is due to going out and invalidates the signal. The timer 17 continues counting.

When the lock detector 16 detects the "unlock" signal of the electric lock 15 by the end of counting (5 hours have passed) and before the start time of the midnight power time zone (steps 32 and 3).
3), the electric water heater automatically determines that this "unlocking" signal is due to returning home and validates it, and waits for the midnight power time period before boiling water in the tank 1 (step 34,
35). In addition, from the end of the count to the start time of the midnight power hours, or during the midnight power hours,
If the "unlock" signal is not detected, it is automatically judged that the user is out of the house and the water is not boiled as it is to save the power (steps 33, 36, 37, 38). At this time, when the "unlock" signal is detected in the midnight power time zone, the boiling of water is immediately started (step 3).
6, 37, 35). Then, after the end of the midnight power time period, the invalid time counter timer 17 starts counting the invalid time.

Example 3. In the third embodiment, an electric charge system according to time zone is used in FIG. 1, and after the invalid time counter timer 17 finishes counting the invalid time, the lock detection unit 16 outputs an “unlock” signal of the electric lock 15. When is detected, the water in the tank 1 is boiled up regardless of the time zone. The operation will be described below with reference to the flowchart of FIG.

Also in this embodiment, as in the case described in the first embodiment, the water is supplied into the tank 1 to boil it in the midnight power time period, and the hot water can be supplied. Then, after the end of the midnight power time period, the invalid time counter timer 17 starts counting the invalid time (5 hours) (step 30,
31). When the count ends, the lock detection unit 16 waits for the "unlock" signal of the electric lock 15 (steps 32 and 33),
If the "unlock" signal is not detected and the electric lock 15 remains "locked", it is automatically judged to be out of the house and power is saved without boiling the water in the tank 1 (step 36,3
7, 38), when the "unlock" signal is detected, it is automatically judged that the user is at home, that is, at home, and the water in the tank 1 is immediately boiled regardless of the time zone other than the midnight power time zone. Perform (step 35).

Example 4. In the fourth embodiment, a temperature sensor 21 for detecting the amount of remaining hot water in the tank 1 is provided above the tank 1 in FIG. 1, which is connected to the control device 12 and invalidated by the invalid time counter timer 17. When the lock detection unit 16 detects the “unlock” signal of the electric lock 15 after the end of the time counting, the boiling of water in the tank 1 is controlled by the information on the amount of remaining hot water from the temperature sensor 21. . In addition, this electric water heater uses the electric charge system according to the hour. The operation will be described below with reference to the flowchart of FIG.

Also in this embodiment, as in the case described in the first embodiment, the water is supplied into the tank 1 to boil it in the midnight power time zone to enable the hot water supply. Then, when the midnight power time period ends (step 30), the dead time counter timer 17 starts counting the dead time (5 hours) (step 31), and the count ends and the lock detection unit 1 ends.
6 detects the "unlock" signal (steps 32, 3
3) Then, it is automatically determined that the user is returning home, that is, at home, and the temperature sensor 21 detects the amount of remaining hot water in the tank 1 (step 51). When the amount of remaining hot water is large, the water in the tank 1 is boiled after waiting for the midnight power time period (step 52,
53, 35), when the amount of remaining hot water is small, the water in the tank 1 is immediately boiled regardless of the time zone other than the midnight power time zone (steps 52, 35).

On the other hand, when the electric lock 15 remains "locked" without the "unlock" signal being detected after the counting is completed (steps 32 and 33), it is automatically judged to be out of service and the tank is automatically released. Power is saved without boiling the water in 1 (steps 36, 37, 38). At this time, when the "unlock" signal is detected in the midnight power time zone, the water boiling is immediately started (steps 36, 37, 35), and the dead time counter timer 17 is used after the end of the midnight power time zone. Start counting dead time.

Example 5. In the fifth embodiment, in FIG. 1, the control device 12 is provided with a period counter timer 18 for counting the period during which the water in the tank 1 is not being boiled, and the count setting period of the period counter timer 18 is set. Is set to, for example, 3 days, and when the counting is completed (3 days have passed), the controller 12 causes the water in the tank 1 to boil. In addition, this electric water heater uses the electric charge system according to the hour. Below, FIG.
The operation will be described with reference to the flowchart of FIG.

In this embodiment as well, as in the case described in the first embodiment, water is supplied into the tank 1 to boil it up during the midnight power time period to enable hot water supply. Then, when the midnight power time period ends (step 30), counting of the invalid time (5 hours) of the dead time counter timer 17 and the period (3 days) in which the period counter timer 18 is not boiling (3 days) is started ( Step 54). Then,
When the counting of the invalid time of the invalid time counter timer 17 is completed, the lock detection unit 16 waits for the “unlock” signal of the electric lock 15 (steps 32 and 33), and the electric lock 15 does not detect the “unlock” signal. If is still "locked", it is automatically judged to be away and power is saved without boiling the water in the tank 1 (steps 36, 37, 38). At this time, when the "unlock" signal is detected in the midnight power time zone, the boiling of water is immediately started (step 3).
6, 37, 35).

On the other hand, when the "unlock" signal is detected after the invalid time has been counted, it is automatically judged that the user is at home, that is, at home, and the count of the period counter timer 18 is compared with the set period. Then, when the count of the period counter timer 18 ends, that is, when three days have passed, it is determined that the hot water in the tank 1 is cold, and the water in the tank 1 is immediately irrespective of the time zone other than the midnight power time zone. The water is boiled (steps 55, 35), and when three days have not passed, the water in the tank 1 is boiled after waiting for the midnight power time zone (steps 55, 56, 35).

Example 6. In the sixth embodiment, in FIG. 1, the control device 12 is provided with an effective time counter timer 22 that counts the time for which the signal of the electric lock 15 detected by the lock detection unit 16 is effective. Is, for example, 16 hours from 3:00 pm to midnight power hours (between 23:00 and 7:00 the next morning), and the valid time counter timer 22 is counting (within 16 hours)
When the lock detection unit 16 detects the "unlocked" signal of the electric lock 15, the "unlocked" signal becomes valid and the water in the tank 1 is boiled during the midnight power time, and the valid time is reached. After the counter timer 22 has finished counting, the lock detector 16
When detects the "unlock" signal of the electric lock 15, the "unlock" signal becomes invalid. The operation will be described below with reference to the flowchart of FIG.

In this embodiment as well, as in the case described in the first embodiment, water is supplied into the tank 1 to boil it in the midnight power time zone to enable hot water supply. Then, the start time of the time when the signal of the electric lock 15 is valid, that is, 3 pm
At time (step 57), the control device 12 starts counting the effective time (16 hours) by the effective time counter timer 22 (step 58), and at the same time, the lock detection unit 16
Waits for the "unlock" signal of the electric lock 15. When the lock detector 16 detects the "unlock" signal of the electric lock 15 during counting of the effective time (step 33), the electric water heater automatically determines this "unlock" signal as coming home. After waiting for the midnight power time zone, the water in the tank 1 is boiled (steps 34 and 35). At this time, when the "unlock" signal is detected in the midnight power time zone, the boiling of water is immediately started (steps 36, 37, 38).

On the other hand, when the "unlocked" signal is not detected during the counting of the effective time, it is automatically judged that the user is out of the house and the electric power is saved without boiling the water as it is (step 33). , 36, 37, 38). Then, when the midnight power time zone ends, at the same time, the counting of the valid time by the valid time counter timer 22 ends (step 59), and the electric water heater does not receive the "unlock" signal of the electric lock 15 and the next valid time. Stand by until the start time (3:00 pm).

Example 7. In the seventh embodiment, an electric charge system according to time zone is used in FIG. 1, and the lock detection unit 16 outputs an “unlock” signal of the electric lock 15 while the effective time counter timer 22 is counting the effective time. When is detected, the water in the tank 1 is boiled up regardless of the time zone. The operation will be described below with reference to the flowchart of FIG.

In this embodiment as well, as in the case described in the first embodiment, water is supplied into the tank 1 to boil it in the midnight power time zone to enable hot water supply. And 3 pm
At time (step 57), the effective time counter timer 22 starts counting the effective time (16 hours) (step 58), and when the lock detection unit 16 detects the "unlocked" signal during counting, The "lock" signal is valid, that is, it is automatically determined to be at home, and the water in the tank 1 is immediately boiled regardless of the time zone other than the midnight power time zone (steps 33 and 35), and " If the electric lock 15 remains "locked" without the "unlock" signal being detected, it is automatically judged to be out of office, and power is saved without boiling the water in the tank 1 (step 33). , 36, 3
7, 38). Then, when the midnight power time zone ends, at the same time, the counting of the valid time by the valid time counter timer 22 ends (step 59), and the electric water heater does not receive the "unlock" signal of the electric lock 15 and the next valid time. Stand by until the start time (3:00 pm).

Example 8. In the eighth embodiment, the temperature sensor 21 and the effective time counter timer 2 in FIG.
2, the lock detector 16 causes the electric lock 15 to operate while the effective time is being counted by the effective time counter timer 22.
When the "unlock" signal is detected, the boiling of water in the tank 1 is controlled by the information on the amount of remaining hot water from the temperature sensor 21. In addition, this electric water heater uses the electric charge system according to the hour. The operation will be described below with reference to the flowchart of FIG.

In this embodiment as well, as in the case described in the first embodiment, water is supplied into the tank 1 to boil it in the midnight power time zone to enable hot water supply. Then 3 pm
At time (step 57), the effective time counter timer 22 starts counting the effective time (16 hours) (step 58), and if the lock detection unit 16 detects the "unlocked" signal during counting, it returns to home, that is, at home. Then, the temperature sensor 21 detects the amount of remaining hot water in the tank 1 (steps 33 and 51). Then, when the amount of remaining hot water is large, the water in the tank 1 is boiled after waiting for the midnight power time zone (steps 52, 53, 35), and when the amount of remaining hot water is small, it is immediately irrespective of the time zone other than the midnight power time zone. The water in the tank 1 is boiled (steps 52 and 3).
5).

On the other hand, if the "unlocked" signal is not detected during the counting of the effective time, it is automatically judged that the user is out of the house and the electric power is saved without boiling the water as it is (step 33). , 36, 37, 38). Then, when the midnight power time zone ends, at the same time, the counting of the valid time by the valid time counter timer 22 ends (step 59), and the electric water heater does not receive the "unlock" signal of the electric lock 15 and the next valid time. Stand by until the start time (3:00 pm).

Example 9. The ninth embodiment is provided with a period counter timer 18 and an effective time counter timer 22 in FIG. 1, and while the effective time counter timer 22 is counting the effective time, the lock detection unit 16 causes the electric lock 15 When the "unlock" signal is detected, it is determined whether the period counter timer 18 has finished counting (three days have passed), and when the count is finished, the controller 12 causes the water in the tank 1 to boil. It is a thing. In addition, this electric water heater uses the electric charge system according to the hour. The operation will be described below with reference to the flowchart of FIG.

In this embodiment as well, as in the case described in the first embodiment, water is supplied into the tank 1 to boil it in the midnight power time zone to enable hot water supply. Then 3 pm
At time (step 57), the effective time by the effective time counter timer 22 (16 hours) and the period during which the period counter timer 18 is not boiling (3 days)
Counting is started (step 60). When the lock detection unit 16 detects the "unlock" signal of the electric lock 15 during counting, it is automatically determined that the user is at home and the count of the period counter timer 18 is compared with the set period ( (Steps 33 and 55), when the counting is completed, it is determined that the hot water in the tank 1 is cold, and the water in the tank 1 is immediately boiled regardless of the time zone other than the midnight power time zone (Step 35). ) When the counting is not completed, the water in the tank 1 is boiled after waiting for the midnight power time zone (steps 56 and 35).

On the other hand, when the "unlocked" signal is not detected during the counting of the effective time, it is automatically judged that the user is out of the house and the electric power is saved without boiling the water as it is (step 33). , 36, 37, 38). Then, when the midnight power time zone ends, at the same time, the counting of the valid time by the valid time counter timer 22 ends (step 59), and the electric water heater does not receive the "unlock" signal of the electric lock 15 and the next valid time. Stand by until the start time (3:00 pm).

Example 10. In the tenth embodiment, in FIG. 1, when the lock detection unit 16 determines that the user is out of the room, the boiling is performed at a temperature lower than the boiling temperature set by the temperature setting unit of the control device 12. The operation will be described below with reference to the flowchart of FIG.

Also in this embodiment, as in the case described in the first embodiment, water is supplied into the tank 1 to boil the water in the midnight power time period, and the hot water can be supplied. Then, when the midnight power time period ends (step 30), the controller 12
The lock detector 16 starts detecting the "unlock" signal of the electric lock 15. Then, when the lock detection unit 16 detects the "unlocked" signal (step 33), the electric water heater automatically determines that this "unlocked" signal is at home, that is, at home, and waits for the midnight power time zone. Then, the water in the tank 1 is heated (steps 34 and 35). When the "unlock" signal is detected in the midnight power time zone, the boiling of water is immediately started at the boiling temperature preset by the temperature setting unit (steps 36, 37, 35).

On the other hand, if the "unlock" signal is not detected between the end of the midnight power time zone and the start of the next midnight power time zone (step 33), it is automatically judged to be absent. Then, after waiting for the midnight electric power time zone, an arbitrary temperature, for example, 5 ° C., is set from the boiling temperature preset by the temperature setting unit.
Boil to a low temperature (steps 36, 39, 35) to save power. If you are away for a few days, you should be able to use the hot water immediately after you return home. It should be noted that after the "unlock" signal is detected by the lock detection unit 16, it is boiled at the original set temperature.

Example 11. In the eleventh embodiment, the lock detection unit 16 and the invalid time counter timer 1 in FIG.
When it is judged that there is no information based on the information of 7, the control device 12
The boiling is performed at a temperature lower than the boiling temperature set by the temperature setting unit. The operation will be described below with reference to the flowchart of FIG.

In this embodiment as well, as in the case described in the first embodiment, water is supplied into the tank 1 to boil it in the midnight power time zone to enable hot water supply. Then, when the midnight power time period ends (step 30), the invalid time counter timer 17 starts counting the invalid time (5 hours) (step 31), and the count ends and the lock detection unit 1 ends.
6 detects the "unlock" signal (steps 32, 3
3) Then, it is automatically judged that the user is at home, that is, at home, and the water in the tank 1 is boiled up after waiting for the midnight power time zone (steps 34 and 35).

On the other hand, when the count is completed and the lock detector 16 does not detect the "unlock" signal (steps 32 and 33),
It automatically determines that the user is out of the house, waits for the midnight power time zone, and then boiles the temperature to, for example, 5 ° C. lower than the boiling temperature preset by the temperature setting unit to save power (step 3).
6, 39, 35). If you are away for a few days, you should be able to use the hot water immediately after you return home. At this time, when the "unlock" signal is detected in the midnight power time zone, the water in the tank is immediately boiled at the original set temperature (steps 37, 35, 38). In addition, after the "lock release" signal is detected by the lock detection unit 16 even outside the midnight power hours, it is boiled at the original set temperature.

In the above-mentioned embodiment, the electric water heater provided with the dead time counter timer 17 controls the boiling temperature of the water in the tank 1. However, the period counter timer 18 and the temperature sensor 21 are In the provided electric water heaters of the third to ninth embodiments, even if the boiling temperature of the water in the tank 1 is controlled, substantially the same action and effect can be obtained.

Example 12 FIG. 13 is a structural explanatory view of the twelfth embodiment of the present invention. In the figure, 19 is an automatic water supply valve arranged in the water supply pipe 3, 20 is an automatic drainage valve arranged in the drainage pipe 5, and the automatic water supply valve 19 and the automatic drainage valve 20 are controlled by the controller 12. Controlled. 23
Is a replacement period counter timer that counts the replacement period of water in the tank 1, and is provided in the control device 12. The replacement period counter timer 23 counts the replacement period counter timer 23 with the water replacement setting period of 30 days, for example. After 30 days have passed (30 days have passed), automatic water supply valve 1
9 and the automatic drainage valve 20 are controlled by the control device 12, and the water in the tank 1 is automatically drained. The operation will be described below with reference to the flowchart of FIG.

In this embodiment as well, as in the case described in the first embodiment, water is supplied into the tank 1 to boil it in the midnight power time zone to enable hot water supply. Then, when the invalid time counter timer 17 finishes counting the invalid time and the lock detection unit 16 does not detect the "unlocked" signal (steps 40 and 41), it is automatically determined to be out and the exchange period counter is set. The timer 23 starts counting (step 42). Then, the lock detection unit 16 continues counting until it detects the "unlocked" signal, and when the lock detection unit 16 detects the "unlocked" signal, it waits for the midnight power time period to boil water, and the replacement period counter The timer 23 is cleared (steps 43, 44, 45, 46, 47).

On the other hand, when the "unlock" signal is not detected and the exchange period counter timer 23 has finished counting (30 days have passed) (step 44), it is automatically judged that the user is out of service for a long time, and the control device Reference numeral 12 sets the automatic water supply valve 19 to “close” and the automatic drainage valve 20 to “open”, and also stops the power supply to the heater 2 to remove the water in the tank 1 from the drain pipe 8 to the drain groove 10. To automatically drain (step 48).

After draining, the electric water heater waits as it is until the lock detector 16 detects the "unlock" signal (step 49), and when it detects the "unlock" signal, it automatically determines that it is home. Then, the controller 12 sets the automatic water supply valve 19 to “open” and the automatic drainage valve 20 to “close” to supply water into the tank 1 and wait for the midnight power time period before starting water supply. Boil up to clear the replacement period counter timer 23 (steps 50, 45, 46, 47).

In the above embodiment, the explanation has been given of the case where the replacement period counter timer 23 is provided in the electric water heater for boiling water in the midnight electric power time zone. However, the electric hot water using the hourly light charge system is explained. Even if the replacement period counter timer 23 is provided in the container, almost the same operation and effect can be obtained.

[0070]

As described above, according to the present invention, the heater provided in the tank, the control device for controlling the energization of the heater and the boiling of the water in the tank, and the door are provided. And a lock detecting means for detecting the lock state of the electric lock, and when the lock detecting means does not detect the "unlock" signal of the electric lock, the water is not boiled and the lock detecting means detects the "unlock" of the electric lock. When a "lock" signal is detected, it is controlled so that water is boiled up according to the midnight power hours, so it is possible to automatically determine whether you are out or at home. The water can be boiled economically while stopping and saving electricity.

Further, the heating heater, the control device, the lock detecting means, and the invalid time counting means for counting the invalid time for invalidating the output signal from the lock detecting means are provided, and the control device operates by the invalid time counting means. If the lock detection means does not detect the "unlock" signal of the electric lock between the end of counting and the end of the midnight power hours, the water is not boiled and the lock detection means does not When a "lock" signal is detected, it is controlled so that water is boiled up at midnight power hours, so it is possible to reliably determine whether you are out or at home, and to boil water without wasting power. You can

Further, when the lock detecting means does not detect the "unlock" signal of the electric lock after the control device finishes the counting by the dead time counting means until the end of the midnight power time zone, the water is boiled up. When the lock detection means detects the "unlock" signal of the electric lock, the water is controlled to be boiled regardless of the time zone, so the water should be boiled regardless of the time zone. It is convenient and convenient.

Further, a heating heater, a control device, a lock detection means, a dead time counting means, and a residual hot water amount detection means are provided, and after the control device finishes counting by the dead time counting means, a midnight power time zone By the end of the time, when the lock detection means does not detect the "unlocked" signal of the electric lock, water is not boiled, and when the lock detection means detects the "unlocked" signal of the electric lock, the amount of remaining hot water The amount of remaining hot water in the tank is detected by the detection means.When the amount of remaining hot water is small, water is boiled up regardless of the time of day, and when the amount of remaining hot water is large, water is boiled up at the midnight power hours. Since it is controlled, water can be boiled up without wasting water and electric power, and there is no worry of running out of water.

Further, a heating heater, a control device, a lock detecting means, an invalid time counting means, and a period counting means for counting a period during which boiling is not performed are provided.
If the lock detection unit does not detect the "unlock" signal of the electric lock between the end of the midnight power time zone after the control unit finishes counting by the dead time count unit, the water is not boiled and the lock is released. When the detection means detects the "unlock" signal of the electric lock, the count period of the period counting means is compared with the set period, and if the count period exceeds the set period, the water is boiled up regardless of the time zone. If the counting period does not exceed the set period, the control is performed such that the water is boiled in the midnight power time zone, so that the water can be boiled economically.

Further, the heater, the control device, the lock detecting means, and the effective time counting means are provided, and the control device completes counting by the effective time counting means.
When the lock detection means does not detect the "unlock" signal of the electric lock, the water is not boiled up. When the lock detection means detects the "unlock" signal of the electric lock, the water is boiled by the midnight power time zone. Since the control is performed to raise the water, it is possible to surely determine whether the user is at home or not to boil the water.

Further, when the lock detecting means does not detect the "unlock" signal of the electric lock before the control device finishes counting by the effective time counting means, the water is not boiled and the lock detecting means is turned on. When the "unlock" signal of the lock is detected, it is controlled so that water is boiled up regardless of the time zone, so it is possible to reliably judge whether you are at home or not at home, and to boil water regardless of the time zone. It is convenient to be able to raise.

Further, a heating heater, a control device, a lock detecting means, an effective time counting means, and a remaining hot water amount detecting means are provided, and the lock detecting means is provided until the control device finishes counting by the effective time counting means. Does not boil water when the electric lock's "unlock" signal is not detected, and when the lock detector detects the electric lock "unlock" signal, If the amount of remaining hot water is small, water is boiled regardless of the time zone, and if the amount of remaining hot water is large, it is controlled to boil water at the midnight power time zone. You can make a reliable judgment and boil water economically, and there is no worry of running out of water.

Further, a heating heater, a control device, a lock detecting means, an effective time counting means and a period counting means are provided, and the lock detecting means operates until the control device finishes counting by the effective time counting means. "Unlock" of electric lock
When the signal is not detected, the water is not boiled, and when the lock detection means detects the "unlock" signal of the electric lock, the count period of the period counting means is compared with the set period, and the count period is the set period. If it exceeds the limit, water is boiled regardless of the time zone, and if the counting period does not exceed the set period, it is controlled so that the water is boiled according to the midnight power time zone. It is convenient because you can make a reliable judgment and boil water economically.

Further, since the control device controls the boiling temperature of the water in the tank based on the information from the lock detecting means and the counting means, the electric power can be saved and the hot water can be used immediately after returning home.

Further, a water supply pipe having an automatic water supply valve, a drainage pipe having an automatic drainage valve, a hot water supply pipe to which a safety valve or the like is connected, a heater, an automatic water supply valve, and an automatic drainage valve. ,
A control device for controlling energization of the heater and boiling of water in the tank, and a replacement period counting means for counting the replacement period of water in the tank are provided, and the control device has a replacement period counting means and a lock detecting means. Since the water supply and drainage of the water in the tank is controlled by controlling the automatic water supply valve and the automatic drainage valve based on the information from the water, it is possible to use the water hygienically and without waste, and to boil the water economically. It is convenient and convenient.

[Brief description of drawings]

FIG. 1 is a structural explanatory view of an embodiment of the present invention.

FIG. 2 is a flowchart showing the operation of the first embodiment of the present invention.

FIG. 3 is a flowchart showing the operation of the second embodiment of the present invention.

FIG. 4 is a flow chart showing the operation of the third embodiment of the present invention.

FIG. 5 is a flow chart showing the operation of the fourth embodiment of the present invention.

FIG. 6 is a flow chart showing the operation of the fifth embodiment of the present invention.

FIG. 7 is a flow chart showing the operation of the sixth embodiment of the present invention.

FIG. 8 is a flow chart showing the operation of the seventh embodiment of the present invention.

FIG. 9 is a flow chart showing the operation of the eighth embodiment of the present invention.

FIG. 10 is a flow chart showing the operation of the ninth embodiment of the present invention.

FIG. 11 is a flow chart showing the operation of the tenth embodiment of the present invention.

FIG. 12 is a flow chart showing the operation of the eleventh embodiment of the present invention.

FIG. 13 is a structural explanatory view of a twelfth embodiment of the present invention.

FIG. 14 is a flowchart showing the operation of the twelfth embodiment of the present invention.

FIG. 15 is a structural explanatory view of a conventional electric water heater.

[Explanation of symbols]

 1 Tank 2 Heater 3 Water Supply Pipe 5 Hot Water Supply Pipe 7 Safety Valve 8 Drain Pipe 12 Control Device 14 Entrance Door 15 Electric Lock 16 Lock Detector 17 Invalid Time Counter Timer 18 Period Counter Timer 19 Automatic Water Supply Valve 20 Automatic Drainage Valve 21 Temperature Sensor 22 Effective time counter timer 23 Replacement period counter timer

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Tadashi Usami 800 Iwamatsu, Oshima-cho, Nitta-gun, Gunma Sanryo Electric Co., Ltd. Gunma Factory

Claims (11)

[Claims] 1. A heater provided in a tank, a control device for controlling energization of the heater and boiling of water in the tank, and a lock state of an electric lock provided on a front door. A lock detecting means for detecting is provided, and when the lock detecting means does not detect the "unlock" signal of the electric lock, the water is not boiled, and the lock detecting means detects the "unlock" signal of the electric lock. The electric water heater is characterized by controlling to boil water according to the midnight power time zone when it is detected. 2. A heater provided in the tank, a control device for controlling energization of the heater and boiling of water in the tank, and a lock state of an electric lock provided on an entrance door. A lock detecting means for detecting and an invalid time counting means for counting an invalid time for invalidating an output signal from the lock detecting means are provided, and the control device finishes counting by the invalid time counting means, and then the midnight power is supplied. By the end of the time period, the lock detection means "unlocks" the electric lock.
When the signal is not detected, the water is not boiled, and when the lock detection means detects the "unlock" signal of the electric lock, it is controlled so that the water is boiled by the midnight power time zone. A characteristic electric water heater. 3. A heater provided in the tank, a control device for controlling energization of the heater and boiling of water in the tank, and a lock state of an electric lock provided on a front door. A lock detecting means for detecting and an invalid time counting means for counting an invalid time for invalidating an output signal from the lock detecting means are provided, and the control device finishes counting by the invalid time counting means, and then the midnight power is supplied. By the end of the time period, the lock detection means "unlocks" the electric lock.
When the signal is not detected, the water is not boiled, and when the lock detection means detects the "unlock" signal of the electric lock, it is controlled to boil the water regardless of the time zone. A characteristic electric water heater. 4. A heater provided in the tank, a control device for controlling energization of the heater and boiling of water in the tank, and a lock state of an electric lock provided on a front door. A lock detecting means for detecting, an invalid time counting means for counting an invalid time for invalidating an output signal from the lock detecting means, and a residual hot water amount detecting means for detecting a residual hot water amount in the tank are provided, and the control device is provided. From the end of the midnight power time period after finishing the count by the invalid time counting means, when the lock detection means does not detect the "unlock" signal of the electric lock, do not boil water, When the lock detecting means detects the "unlock" signal of the electric lock, the remaining hot water amount detecting means detects the remaining hot water amount in the tank, and when the remaining hot water amount is small, the water is boiled regardless of the time zone. If the amount of remaining hot water is large Is an electric water heater characterized by controlling to boil water at midnight power hours. 5. A heater provided in the tank, a control device for controlling energization of the heater and boiling of water in the tank, and a lock state of an electric lock provided on a front door. The control device is provided with a lock detecting means for detecting, an invalid time counting means for counting an invalid time for invalidating an output signal from the lock detecting means, and a period counting means for counting a period during which boiling is not performed. Is from the end of the count by the dead time counting means until the end of the midnight power time zone, when the lock detection means does not detect the "unlock" signal of the electric lock, do not boil water, When the lock detecting means detects the "unlock" signal of the electric lock, the count period of the period counting means is compared with the set period, and when the count period exceeds the set period, the water is removed regardless of the time zone. of An electric water heater that performs boiling and controls so that water is boiled according to the midnight power time period when the counting period does not exceed the set period. 6. A heater provided in a tank, a control device for controlling energization of the heater and boiling of water in the tank, and a lock state of an electric lock provided on a front door. A lock detecting means for detecting and a valid time counting means for counting a valid time for validating an output signal from the lock detecting means are provided, and the control device is operated to complete the counting by the valid time counting means. When the lock detection means does not detect the "unlock" signal of the electric lock, the water is not boiled, and when the lock detection means detects the "unlock" signal of the electric lock, it depends on the midnight power time zone. An electric water heater characterized by being controlled to boil water. 7. A heater provided in a tank, a control device for controlling energization of the heater and boiling of water in the tank, and a lock state of an electric lock provided on a front door. A lock detecting means for detecting and a valid time counting means for counting a valid time for validating an output signal from the lock detecting means are provided, and the control device is operated to complete the counting by the valid time counting means. When the lock detection means does not detect the "unlocked" signal of the electric lock, water is not boiled up, and when the lock detection means detects the "unlocked" signal of the electric lock, regardless of the time zone. An electric water heater characterized by being controlled to boil water. 8. A heater provided in the tank, a control device for controlling energization of the heater and boiling of water in the tank, and a lock state of an electric lock provided at the entrance door. A lock detecting means for detecting, an effective time counting means for counting an effective time for validating an output signal from the lock detecting means, and a residual hot water amount detecting means for detecting a residual hot water amount in the tank are provided, and the control device is provided. When the lock detection means does not detect the "unlocked" signal of the electric lock before the count by the effective time counting means is finished, the water is not boiled, and the lock detection means When the "unlocked" signal is detected, the remaining hot water amount detecting means detects the remaining hot water amount in the tank.When the remaining hot water amount is small, the water is boiled regardless of the time zone, and when the remaining hot water amount is large. Depending on the midnight power hours, An electric water heater characterized by being controlled so as to boil. 9. A heater provided in a tank, a control device for controlling energization of the heater and boiling of water in the tank, and a lock state of an electric lock provided on a front door. The control device is provided with a lock detecting means for detecting, an effective time counting means for counting an effective time for which an output signal from the lock detecting means is effective, and a period counting means for counting a period during which boiling is not performed. When the lock detection means does not detect the "unlock" signal of the electric lock by the end of the count by the effective time counting means, the water is not boiled, and the lock detection means detects the electric lock. When the "unlock" signal is detected, the count period of the period counting means is compared with the set period, and if the count period exceeds the set period, water is boiled regardless of the time period and the count period is reached. The electric water heater is characterized in that when the time period does not exceed the set period, it is controlled so as to boil water according to the midnight power hours. 10. The control device controls the boiling temperature of water in the tank based on the information from the lock detecting means and the counting means.
The described electric water heater. 11. A water supply pipe connected below the tank and having an automatic valve for water supply, a drain pipe connected below the tank and having an automatic valve for drainage, and connected to an upper part of the tank such as a safety valve. A hot water supply pipe, a heater disposed in the tank, the water supply automatic valve, the drainage automatic valve, a control device for controlling energization of the heater and boiling of water in the tank, and the tank And a replacement period counting means for counting a replacement period of water in the inside of the tank by the control device controlling the automatic water supply valve and the automatic drain valve based on information from the replacement period counting means and the lock detection means. An electric water heater that controls the water supply and drainage of water.