JP2003279119A - Water heater with electric power measuring function - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To easily provide a device for indicating the amount of consumption of utilities and its corresponding values for a user by effectively using pre- provided resources. <P>SOLUTION: In design of this water heater with the electric power measuring function, the water heater with the electric power measuring function has an arithmetic processing unit 10, a remote controller 15 having the display function, a communication line 14 and a communication circuit 13 composed of a cable or radio transmission between the arithmetic processing unit 10 and the remote controller 15. The arithmetic processing unit 10 of the water heater calculates electric power consumption or an electric power consumption corresponding quantity by receiving an instantaneous voltage value and instantaneous electric current value from a voltage measuring circuit 12 and an electric current measuring circuit 11 for measuring the instantaneous voltage value and the instantaneous electric current value of a commercial AC power source, and displays the electric power consumption or the electric power consumption corresponding value on a display part of the remote controller 15 via the communication line 14 and the communication circuit 13. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a utility usage display utilizing resources preliminarily provided in a water heater.

[0002]

2. Description of the Related Art In recent years, in view of increasing awareness of global environment conservation and economical efficiency, utility users of utilities such as electricity, gas, and water supply control the operating conditions of each utility-using device in order to reduce the usage. The number of cases in which the vehicle is manually set to decrease the number is increasing. Therefore, there is an increasing need for a device that supports the user by monitoring the usage amount of each utility and displaying the usage amount of each utility or its equivalent amount based on the operation of the user.

As a means for the user to recognize the usage amount of the utility, for example, an energy saving (energy saving) driving support including a utility usage amount measuring device and a display device such as an energy saving driving guidance device (energy saving navigation). There is a method of newly installing the device. Here, the energy saving navigation is
It is a device that supports the user's manual energy-saving driving by monitoring the energy usage of each utility equipment and presenting it to the user in a certain way, in order to provide the user with a target value for energy saving. In addition, the past energy consumption amount of the user is accumulated, an energy saving target value is calculated by a predetermined calculation method, and the present energy consumption amount and the energy saving target value are compared and displayed to the user.

[0004]

However, when another device such as the above-mentioned energy-saving navigation is newly installed, the device is a large-scale one (measurement device or display device, or between measurement device and display device). (Communication equipment, etc.) and installation of equipment require considerable cost and labor (construction and refurbishment for equipment installation, etc.). Further, some users may feel a sense of resistance to installing the display device by itself (obstructing the appearance of the room in which it is installed, etc.).

The present invention has been made in view of the above problems, and an object of the present invention is to measure and calculate information such as the usage amount of each utility by utilizing a system of a water heater already installed. This is to simplify the installation of the device for displaying the display and to reduce the cost for installing the device. still,
The water heater according to the present invention includes not only a water heater used for hot water supply in a kitchen or a bath, but also a water heater used for floor heating or central heating.

[0006]

A first characteristic configuration of a water heater with an electric power measuring function according to the present invention for achieving this object is, as described in claim 1 in the section of the claims, a calculation process. A water heater with a power measuring function, comprising a device and a remote controller having a display function and a wired or wireless communication line and a communication circuit between the processor and the remote controller, wherein the processor of the water heater is Receiving an instantaneous voltage value and an instantaneous current value from a voltage measuring circuit and an electric current measuring circuit for measuring an instantaneous voltage value and an instantaneous current value of a commercial AC power supply, calculating an electric power usage amount or an equivalent power usage amount, and performing the communication. The point is to display the power usage amount or the power usage amount equivalent amount on the display unit of the remote controller through a line and the communication circuit.

That is, according to the first characteristic configuration of the water heater with a power measuring function according to the present invention, the arithmetic processing unit is caused to calculate the amount of power consumption or the amount equivalent to the amount of power consumption, and the water heater is provided in advance. By using the communication line, the communication circuit, and the remote controller that are present, the power usage amount or the power usage amount equivalent amount can be displayed on the display unit of the remote controller.

The water heater includes a water heater used for hot water supply in the kitchen and baths, a water heater used for floor heating, etc.
These common water heaters are equipped with the communication line, the communication circuit, and the remote controller. According to the present invention, it is necessary to newly install a device for displaying an amount of power consumption or an amount equivalent to the amount of power consumption by effectively using the resources installed in advance, that is, the communication line, the communication circuit, and the remote controller. It is possible to reduce the cost and labor for installing a new device by eliminating the problem.

Further, in general, electric appliances (equipment using utilities) are used at any time. Therefore, in order to monitor the electric power consumption (utility consumption), the monitoring equipment must be constantly operated. . It can be said that the water heater is suitable for monitoring the amount of electric power used because it is usually in constant operation (power is always supplied).

Therefore, by effectively using the existing resources, here, the communication line, the communication circuit, and the remote controller, the power consumption amount or the power consumption amount equivalent to that in the case where the energy-saving driving support device is newly installed. It is possible to save the cost and labor involved in installing the device for displaying the above, and to provide the user with a function equivalent to the case where a new energy-saving driving support device is installed.

The second characteristic constitution is, in addition to the first characteristic constitution, as described in claim 2 of the scope of claims,
The current measuring circuit measures the instantaneous current value using a current transformer, and the voltage measuring circuit uses the voltage of a power supply circuit provided in advance in the water heater with the power measuring function to determine the instantaneous voltage value. There is a point to measure.

That is, according to the second characteristic configuration, the instantaneous current value is measured by using the current transformer, the instantaneous voltage value is acquired by using the voltage of the power supply circuit which is provided in advance, and the instantaneous voltage value is measured. You can ask for electricity.

In order to measure the instantaneous current value in the current measuring circuit, means for extracting the change in current is required. The current transformer is a coil-shaped device that takes out a current flowing through a power line in a non-contact manner, and by using the current transformer, a current signal can be converted into a voltage signal and acquired. The current measurement circuit provides the acquired voltage signal to the arithmetic processing device. By using a current transformer, it is possible to reduce the cost of equipment for measuring current. By configuring the voltage measuring circuit to use the AC voltage signal of the power supply circuit provided in advance, the cost for installing equipment for voltage measurement can be suppressed.

Therefore, by using a current transformer,
Simplifies the device for instantaneous voltage value measurement by simplifying the device for instantaneous current value measurement, reducing the cost and labor for installation, and using the voltage of the power supply circuit already equipped in the water heater as it is. Therefore, the cost and labor for installing the device can be reduced.

In the third characteristic configuration, as described in claim 3 of the scope of claims, in addition to the first characteristic configuration to the second characteristic configuration, the arithmetic processing unit is a commercial AC power source. An integrated power amount is calculated for a partial cycle corresponding to an integral multiple of a half cycle of a plurality of continuous cycles of the AC voltage, and the power usage amount or the power usage amount is equivalent based on the calculated integrated power amount of the partial cycle. The point is to calculate the quantity.

That is, according to the third characteristic configuration, the arithmetic processing unit calculates the integrated electric energy in the partial cycle among the plural cycles, and calculates the integrated electric energy in the plural cycles. It can be calculated based on the integrated electric energy of the partial cycle.

The electric power consumption is obtained by multiplying the instantaneous current value and the instantaneous voltage value respectively to calculate the instantaneous power and integrating the instantaneous power. The instantaneous current value and the instantaneous voltage value are obtained by sampling the output signals provided by the current measuring circuit and the voltage measuring circuit at regular sampling intervals. The sampling cycle is naturally shorter than the voltage cycle of the commercial AC power supply.

When measuring the instantaneous current value and the instantaneous voltage value, the current waveform may be a distorted waveform instead of an accurate sine wave. Therefore, the sampling number of the instantaneous current value and the instantaneous voltage value is The more the power consumption is, the more accurate the power consumption or the power consumption equivalent amount can be calculated. However, the arithmetic processing unit must calculate the instantaneous power for each of the acquired instantaneous current value and instantaneous voltage value, and the arithmetic processing unit is loaded in proportion to the sampling number. Therefore, by adopting a configuration in which the integrated electric energy is measured only for a part of a plurality of cycles, the load on the arithmetic processing device can be reduced. Further, by thinning out the number of times of arithmetic processing, it is possible to suppress the power consumption of the arithmetic processing device.

Since the power supply frequency of the commercial AC power supply is 50 Hz in eastern Japan and 60 Hz in western Japan, the voltage cycle of the commercial AC power supply used in a general household is 20 milliseconds or less. It is unlikely that the changes in the current value (instantaneous current value) and voltage value (instantaneous voltage value) due to the use of electrical appliances in a typical home will continuously increase and decrease remarkably in tens of milliseconds. The current value and voltage value change at the beginning and end of use of the electric appliance, depending on the usage state, but it is thought that it generally increases or decreases at a time and then the steady state continues for a certain period. Even if it changes at the maximum frequency, it is considered to be in the unit of several seconds. Therefore, it is not always necessary to continuously measure the instantaneous voltage value and the instantaneous current value in the voltage measuring circuit and the current measuring circuit, and the measurement is performed for a certain period, that is, for each of the plurality of periods for a part of the period. However, the measured value may be an average integrated electric energy in the plurality of cycles.

When the signals provided by the current measuring circuit and the voltage measuring circuit are analog voltage signals,
A / D conversion circuit (Analog) provided in the arithmetic processing unit
It is necessary to convert the analog voltage signal into a digital amount using a toDigital converter circuit). In this case, in order to reduce the power consumption of the arithmetic processing unit, it is desirable that the A / D conversion is not performed in the period in which the measurement is not performed. Further, it is desirable that the current measuring circuit and the voltage measuring circuit are also configured to stop their operations during a period in which measurement is not performed.

Therefore, the power consumption is calculated only for a part of the plurality of cycles.
It is possible to reduce the load on the arithmetic processing unit and efficiently calculate the amount of power consumption or the amount of power consumption, and to measure the instantaneous voltage value and the instantaneous current value only for the partial cycle. As a result, power consumption can be suppressed. Further, by decimating the process related to the calculation of the power consumption, the calculation processing device has lower performance and lower cost than the calculation processing device having the performance required in the structure for always calculating the instantaneous power. Even the processing device can calculate the amount of power consumption, and can realize the water heater according to the present invention.

The fourth characteristic constitution is, as described in claim 4 of the scope of the claims, for an arithmetic processing unit and a remote controller having a display function, and for communication between the arithmetic processing unit and the remote controller. A water heater with a power measuring function provided with a wired or wireless and communication circuit, wherein the arithmetic processing unit includes at least one of a gas meter, a water meter, and an electric power meter for each constant amount of use for each measurement target. Alternatively, it is provided with an integrated usage amount calculation means for receiving a signal output at regular intervals and calculating each integrated usage amount, and the remote controller, the integrated usage amount calculated by the integrated usage amount calculation means, The point is that it is received via the communication line and the communication circuit, and is displayed in association with each of the measurement targets.

That is, according to the fourth characteristic configuration, the integrated usage amount of each is calculated by using at least one of the gas meter, the water meter, and the power meter, and the integrated usage amount calculated for the user is calculated. Can be presented. here,
In the case where the signal is output every fixed period, the signal including the information on the usage amount is output.

In a general household, a gas meter, a water meter, a power meter, etc. are installed. The meter of each measurement object measures the usage amount of each measurement object, and a method of effectively utilizing these resources is desired. Therefore, by adding a function to output a signal to each meter at a fixed usage amount or at a fixed period, and by implementing an integrated usage amount calculating means, the integrated usage amount of any one of gas, water, and power can be calculated. , The accumulated usage amount of each can be presented to the user in association with the evaluation target.

Therefore, by effectively using the gas, water and electric power meters already installed in general households, the cost for installing new equipment can be kept low, and the user can be saved. On the other hand, it is possible to simply provide the integrated usage amount.

In the fifth characteristic constitution, as described in claim 5 of the scope of claims, in addition to the first characteristic constitution to the third characteristic constitution, at least one of a gas meter and a water meter is provided. The remote controller includes an integrated usage amount calculating means for receiving a signal output to each of the measurement objects at a fixed usage amount or a fixed period, and calculating an integrated usage amount of each. The point is to display the integrated usage amount calculated in the above in association with each measurement object.

That is, according to the fifth characteristic configuration, in addition to measuring and displaying the amount of electric power used, the cumulative amount of gas and water used is calculated by using each meter, and is easily provided to the user. I can do things.

[0028] Generally, a user who wants to obtain the power consumption in each home is interested in energy saving, and not only the power consumption but also other utilities, that is, the consumption of gas and water. It is considered that they are hoping that they can be easily acquired on the same system. Therefore, by calculating the integrated usage using at least one of the gas and water meters, and making it possible to selectively display at least one of the power usage, gas usage, and water usage , It is possible to respond more flexibly to the user's request.

The sixth characteristic configuration is, in addition to the first characteristic configuration to the fifth characteristic configuration, as described in claim 6 of the scope of claims, the arithmetic processing device is provided in advance. The above-mentioned arithmetic processing unit for combustion control is present.

That is, according to the sixth characteristic configuration, it is possible to calculate the amount of electric power used or the amount equivalent to the amount of electric power used by utilizing the arithmetic processing unit for the combustion control provided in advance in the water heater. . Therefore, in the case where the arithmetic processing device provided in advance has a sufficient capacity for calculating the electric power consumption, by using the arithmetic processing device, a device relating to the calculation of the electric power consumption can be provided. It is possible to eliminate the need to install a new device, and to reduce the cost and labor involved in installing a new device.

[0031]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of a water heater with a power measuring function (hereinafter, simply referred to as "water heater") according to the present invention will be described with reference to the drawings.

As shown in FIG. 1, the water heater 1 of the first embodiment measures the instantaneous voltage value from the AC voltage of the current measuring circuit 11 and the power supply circuit 16 which measures the instantaneous current value using the current transformer 17. Voltage measuring circuit 12, an arithmetic processing unit 10 for calculating the electric power consumption amount, a remote controller 15 for displaying the calculated electric power consumption amount or an equivalent amount of the electric power consumption amount, and communication between the arithmetic processing unit 10 and the remote control unit 15. The circuit 13 and the communication line 14 are provided.

The current measuring circuit 11 uses the current transformer 17 to convert the current flowing through the power line into a voltage signal (analog signal).
To the arithmetic processing unit 10 after conversion. Here, the current transformer 17 is a coil-shaped device that takes out the current flowing through the power line in a non-contact manner, and is installed downstream of the power meter (meter box, close to the distribution board), that is, on the facility side. By installing it close to the power meter, it becomes possible to measure the total power used by the user.

More specifically, as shown in FIG. 1, in the case of a single-phase three-wire power supply system, the current transformer 17 is connected to U and W in order to measure the current between U and V and between V and W. Installed in two. The power supply system for general households is a single-phase three-wire system, and U, V, and W in FIG. 1 are symbols representing the phases of the single-phase three-wire system. As shown in FIG. 3, the current measuring circuit 11 adjusts the amplitude and the phase of the voltage signal obtained from the current transformer 17 by using an operational amplifier in the current measuring circuit 11, and the like. It is passed to the A / D conversion circuit.

The voltage measuring circuit 12 provides a voltage signal to the arithmetic processing unit 10 by using the AC voltage signal of the power supply circuit 16 provided in advance in the water heater 1. Here, since the AC voltage of the commercial AC power supply is 100 V and the voltage of the water heater control microcomputer is several V, the voltage of the power supply circuit 16 is set to the arithmetic processing unit 1.
You cannot directly enter 0. Therefore, the power supply circuit 16
Circuit (apparatus) for using the above voltage in the arithmetic processing unit 10
is necessary. Specifically, as shown in FIG. 4, the voltage of the power supply circuit 16 is divided into a minute voltage, and the voltage measuring circuit 1
Adjust the amplitude and phase through the operational amplifier in 2.
It is provided to the arithmetic processing unit 10.

The arithmetic processing device 10 is an arithmetic processing device provided in advance in the water heater 1. Specifically, water heater 1
Microcomputer for controlling water heater (Microcom
puter), which is generally a CPU (Central Processi)
ng Unit) and an A / D conversion circuit. The arithmetic processing unit 10 samples the respective analog voltage signals acquired from the current measuring circuit 11 and the voltage measuring circuit 12,
It is converted into a digital amount by using an A / D conversion circuit, and the power consumption is calculated. Here, the instantaneous power is obtained by multiplying the instantaneous current value and the instantaneous voltage value, and the power consumption is obtained from the integrated value of the instantaneous power. In addition, the arithmetic processing unit 10 causes the remote controller 15 to use the power consumption amount and the power consumption amount equivalent amount (the electricity charge and the usage limit target amount based on the operation of the remote controller 15 by the user) via the communication circuit 13 and the communication line 14. Ratio, etc.).

Since the instantaneous power is obtained by multiplying the instantaneous current value acquired by the current measuring circuit 11 and the instantaneous voltage value acquired by the voltage measuring circuit 12, it is output from the current measuring circuit 11 and the voltage measuring circuit 12. It is necessary to consider the phase difference between the output signals. Specifically, the phase difference is adjusted in the arithmetic processing unit 10, and the corresponding instantaneous current value and instantaneous voltage value are multiplied to obtain the instantaneous power. Arithmetic processing device 10
Calculates the power consumption by integrating the obtained instantaneous powers.

Further, the ratio of the power usage amount to the electricity charge and the usage restriction target amount (an example of the power usage amount equivalent amount) is calculated from the calculated power usage amount and provided to the remote controller 15 together with the power usage amount. Generally, electricity bills are billed on a monthly basis, so it is desirable to calculate the amount of electricity used or the equivalent amount of electricity used on a monthly basis. It is desirable that the electric power consumption amount or the electric power consumption amount equivalent amount is calculated for each predetermined period and provided based on the operation of the remote controller 15 by the user. With such a configuration, the user of the water heater 1 according to the present invention can recognize the power consumption more accurately and easily.
Further, the amount of power consumption other than the ratio of the amount of power consumption to the electricity charge and the target amount of use limitation may be appropriately added and calculated and displayed as necessary.

In this embodiment, the calculation (arithmetic processing) of the amount of power consumption is carried out only for a part of a plurality of continuous cycles (specifically, for n cycles within a continuous m cycle). Perform measurement, where m> n). Since it is possible that the voltage waveform becomes a distorted waveform instead of an accurate sine wave, it is better that the number of measurements (sampling number) within the period for measuring the instantaneous current value and the instantaneous voltage value is as large as possible. Since the load related to the arithmetic processing of the arithmetic processing device 10 increases in proportion to the number of samplings, the configuration is such that the electric power consumption is calculated only for a part of the cycle.
It is possible to reduce the load on the arithmetic processing of the arithmetic processing device 10 and to perform the measurement more accurately. Note that it is unlikely that the amount of electric power used in a typical household will increase and decrease remarkably for each voltage cycle of the commercial AC power supply, so the accuracy of measurement will be impaired even if it is implemented only for some cycles. There is nothing. Further, in the present embodiment, in order to reduce the power consumption of the arithmetic processing device 10, the period in which the measurement is not performed is A
Do not perform / D conversion.

Further, in this embodiment, the arithmetic processing unit 10 provided in the water heater 1 in advance is used, but the capacity of the arithmetic processing unit 10 is low and the amount of electric power consumption or the amount equivalent to the amount of electric power consumption is used. When it is difficult to perform the calculation of, the calculation processing device for calculating the power consumption may be additionally installed.

The remote controller 15 is a remote controller having a display function provided in the water heater 1 in advance, and the arithmetic processing unit 10
The amount of electric power used or the amount equivalent to the amount of electric power used calculated in step 3 is displayed based on the operation of the user. In the case of a configuration that converts the electricity rate and the ratio to the usage restriction target amount,
Based on the operation of the user, selectively display at least one of the power usage amount, the electricity charge, and the ratio to the usage restriction target amount, and to display the set power usage amount, the electricity charge, and the ratio to the usage restriction target amount. It is desirable that the display is made for each calculation period (monthly, daily, etc.).

In the case where the ratio to the usage limit target amount is calculated, the remote controller 15 is provided with a function for the user to set the usage limit target amount for each period for calculating the power usage amount. . The usage restriction target amount may be an electricity charge when converting the electricity charge. If the power usage exceeds the usage limit target value (or if the electricity rate exceeds the usage limit target value), the LED (Light
With a configuration that emits an Emitting Diode) or a warning by voice, the user can recognize the power consumption more accurately and easily.

Next, a second embodiment will be described in which the remote controller 15 displays the amounts of gas and water used and their respective amounts of use in addition to the amount of power used or the amount equivalent to power used. As shown in FIG. 2, the hot water supply device 1 of the second embodiment is the integrated hot water supply device 1 of the first embodiment, which is configured to be communicable with the gas meter 20 and provide the gas usage amount to the arithmetic processing unit 10. The calculation means 18 and the integrated usage amount calculation means 19 which is configured to be communicable with the water meter 21 and provide the water usage amount to the arithmetic processing device 10 are configured.

The integrated usage amount calculation means 18 and the integrated usage amount calculation means 19 respectively receive signals output for each predetermined usage amount and calculate the integrated usage amount of gas and water. In addition, in the present embodiment, the signals output from the gas meter 20 and the water meter 21 are for each fixed amount of use, but for each fixed period,
It may be configured to output a signal including information on the usage amount. It should be noted that the gas meter 20 and the water meter 21 are respectively provided with an integrated usage amount calculating means 18 and an integrated usage amount calculating means 19, which correspond to each, but one integrated usage amount calculating means calculates each integrated usage amount. It may be configured.

In the second embodiment, in order to obtain the usage amounts of gas and water, the integrated usage amount is calculated by using the corresponding meter and integrated usage amount calculating means, and the power usage amount is determined by the current measuring circuit 11. The power consumption is calculated by using the voltage measurement circuit 12 and the voltage measurement circuit 12, but as another embodiment, the power consumption is also calculated by using a signal output from the power meter for each constant usage amount. A configuration is conceivable in which the power consumption is calculated using the power consumption calculation means. As in the case of the second embodiment, the signal output from the power meter may have a configuration in which a signal including information on the usage amount is output at regular intervals, or a single integrated usage amount calculation means may be used. The configuration may be one in which integrated usage amounts of gas, water, and electric power are calculated.

[Brief description of drawings]

FIG. 1 is a diagram showing a configuration of an embodiment of a water heater with a power measuring function according to the present invention.

FIG. 2 is a diagram showing a configuration of an embodiment of a water heater with a power measuring function according to the present invention.

FIG. 3 is a diagram showing an embodiment of a current measuring circuit according to the present invention.

FIG. 4 is a diagram showing an embodiment of a voltage measuring circuit according to the present invention.

[Explanation of symbols]

1: Water heater with power measurement function 10: Processor 11: Current measuring circuit 12: Voltage measuring circuit 13: Communication circuit 14: Communication line 15: Remote control 16: Power supply circuit 17: Current transformer 18, 19: Integrated usage amount calculation means 20: Gas meter 21: Water meter

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Hiroaki Dema             4-1-2 Hirano-cho, Chuo-ku, Osaka-shi, Osaka Prefecture               Within Osaka Gas Co., Ltd. (72) Inventor Hideki Okamoto             4-1-2 Hirano-cho, Chuo-ku, Osaka-shi, Osaka Prefecture               Within Osaka Gas Co., Ltd. (72) Inventor Satoru Nonami             4-1-2 Hirano-cho, Chuo-ku, Osaka-shi, Osaka Prefecture               Within Osaka Gas Co., Ltd. (72) Inventor Makoto Kato             4-1-2 Hirano-cho, Chuo-ku, Osaka-shi, Osaka Prefecture               Within Osaka Gas Co., Ltd.

Claims (6)

[Claims] 1. A water heater with an electric power measuring function, which includes an arithmetic processing unit and a remote controller having a display function, and a wired or wireless communication line and a communication circuit between the arithmetic processing unit and the remote controller. The processing unit of the water heater receives the instantaneous voltage value and the instantaneous current value from the voltage measuring circuit and the current measuring circuit that measure the instantaneous voltage value and the instantaneous current value of the commercial AC power supply, and the power consumption amount or the power consumption amount is equivalent. A water heater with a power measuring function, which calculates the amount and displays the power usage amount or the power usage amount equivalent amount on the display unit of the remote controller via the communication line and the communication circuit. 2. The current measuring circuit measures the instantaneous current value using a current transformer, and the voltage measuring circuit uses the voltage of a power supply circuit provided in advance in the water heater with a power measuring function. The water heater with a power measuring function according to claim 1, wherein the instantaneous voltage value is measured. 3. The arithmetic processing unit calculates an integrated electric energy for a partial cycle corresponding to an integral multiple of a half cycle of a plurality of continuous AC voltages of a commercial AC power source, and calculates the integrated electric energy. The water heater with a power measuring function according to claim 1 or 2, wherein the power usage amount or the power usage amount equivalent amount is calculated based on an integrated power amount. 4. A water heater with a power measuring function, which includes a processor and a remote controller having a display function, and a wired or wireless communication circuit for communication between the processor and the remote controller. The arithmetic processing unit receives a signal output from at least one of a gas meter, a water meter, and an electric power meter to each measurement target at a fixed usage amount or at a fixed period, and calculates each integrated usage amount. The remote controller receives the integrated usage amount calculated by the integrated usage amount calculation means via the communication line and the communication circuit, and associates the integrated usage amount with each of the measurement targets. A water heater with a power measurement function that is characterized by displaying. 5. An integrated usage amount for calculating a cumulative usage amount by receiving a signal output from at least one of a gas meter and a water meter to each measurement object at a fixed usage amount or at a fixed period. 4. A calculating device is provided, and the remote controller displays the integrated usage amount calculated by the integrated usage amount calculating device in association with each of the measurement targets, and displays the integrated usage amount. A water heater with the power measurement function described in. 6. The water heater with a power measuring function according to claim 1, wherein the arithmetic processing device is the arithmetic processing device for combustion control which is provided in advance. .