JPH02161228A - Hot water supply - Google Patents

Abstract

PURPOSE:To make a special handling unnecessary at the time of power failure by using a system wherein, when a stoppage of power supply is detected, a prescribed supply quantity of hot water is suspended and, when the power supply recovers, the residual prescribed supply of hot water is resumed on the basis of the quantity of the outflow stored in a memory. CONSTITUTION:By means of a volume-setting control 22c in a main control unit 6, the quantity of hot water with which a bathtub is filled through a bathtub-filling outlet 4a is arbitrarily set. By means of a prescribed quantity hot water supply-controlling means, when a hot water supply-controlling switch 21f for prescribed quantity hot water supply is turned on, the supply of hot water through a bathtub-filling outlet 4a at a prescribed temperature is started and, when the outflow measured reaches a prescribed quantity with which the bathtub is to be filled, the supply of hot water is stopped. The hot water outflow-metering means comprises a counter for counting up the pulses outputted from a flow rate sensor, and the data of the metered outflow is stored in a memory consisting of an internal memory in the CPU, which is supplied with power from a backup source circuit 28a, and the data is not erased at the time of power failure.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a hot water supply system that allows hot water to be dispensed from a water heater to a plurality of hot water ports as appropriate.

[Prior Art] Conventionally, in this type of hot water system in which hot water can be appropriately dispensed from a water heater to a plurality of hot water outlets, there has been provided a hot water filling amount setting means for setting the amount of hot water to be dispensed from the bathtub hot water outlet, and a hot water filling amount setting means for setting the amount of hot water to be dispensed from the bathtub hot water outlet. A flow rate sensor that detects the flow rate of hot water being dispensed, a hot water amount measuring means that measures the amount of hot water dispensed based on the output of the flow rate sensor, and a preset hot water temperature from the bathtub hot water supply opening when the operation switch for quantitative hot water dispensing is turned on. The bathtub is equipped with a metered hot water supply control means that starts dispensing hot water and stops dispensing when the measured amount of hot water reaches a set amount of hot water, and automatically adjusts the preset amount of hot water to the bathtub. There was one that could supply hot water.

[Problems to be Solved by the Invention] However, in the above-mentioned conventional example, if a power outage occurs during metered hot water dispensing, metered hot water dispensing is stopped and the measured hot water amount data disappears. Therefore, the remaining amount of hot water must be manually dispensed up to a predetermined amount of hot water, which poses a problem in that when a power outage occurs, the fixed quantity dispensing function is impaired and operations become troublesome.

The present invention has been made in view of the above points, and its purpose is to provide a hot water supply system in which the fixed hot water supply function is not impaired even in the event of a power outage and does not require special operations when a power outage occurs. It is about providing.

[Means for Solving the Problems] The hot water supply system of the present invention includes a hot water filling amount setting means for setting the amount of hot water to be dispensed from the bathtub hot water supply opening, and a flow rate sensor for detecting the flow rate of hot water dispensed from the bathtub hot water supply opening. , a hot water supply amount measuring means that measures the amount of hot water dispensed based on the flow rate sensor output; and a hot water supply amount measuring means that measures the amount of hot water dispensed based on the output of the flow rate sensor; A hot water supply system equipped with a quantitative hot water supply control means that stops hot water supply when the amount of hot water reaches a set amount of hot water, a storage means with a backup function that stores the measured amount of hot water dispensed, and a power failure detection means that detects a power outage. The metered hot water dispenser is configured to stop the metered hot water dispense when a power outage is detected, and restart the remaining metered hot water dispense based on the amount of hot water stored in the storage means when the power is restored.

[Function] The present invention is configured as described above, and when the metered hot water dispensing operation switch is turned on, dispensing of hot water at a preset temperature from the bathtub hot water supply opening is started, and the measured amount of dispensing hot water is In a hot water supply system equipped with a quantitative hot water supply control means that stops the hot water supply when a preset amount of hot water is reached, the hot water supply system includes a storage means with a backup function that stores the measured amount of hot water dispensed, and a power outage detection that detects a power outage. The metered hot water supply means is configured to stop the metered hot water supply when a power outage is detected, and restart the remaining metered hot water supply based on the amount of hot water stored in the storage means when the power is restored. It is now possible to provide a hot water supply system that does not require any special operations when a power outage occurs, and the fixed hot water supply function is not impaired even in the event of a power outage.

[Example] Fig. 1 shows an example of the arrangement of a multi-point hot water supply system using an operation display device according to the present invention, and Fig. 2 shows a schematic configuration of the same as above. hot water mixing means 2 for mixing an appropriate amount of water to form hot water at a predetermined temperature;
, 4c, and a hot water supply switching means 3 for appropriately discharging hot water from each hot water supply port 4a, 4b.
.

Hot water supply control unit 5a corresponds to 4c.

5b and 5c are provided, and hot water supply control units 5a and 5b.

Hot water supply control and hot water temperature setting are performed using operation switches such as the hot water supply control switch and hot water temperature setting switch of 5C, and the set hot water temperature is displayed on the display, and each hot water supply port 4a, 4b, 4c is When hot water is supplied from the hot water supply ports 4a, 4
Hot water supply control unit 5 provided corresponding to b and 4c
A control means is provided for controlling the hot water mixing means 2 so that the hot water temperature is set at points a, 5b, and 5c. Here, the hot water mixing means 2 includes a hot water mixing section 4o that mixes hot water from the water heater 1 and city water, and a hot water temperature control gear unit 40a that rotationally drives a mixing ratio setting mechanism of the hot water mixing section 40 using a stepping motor. and a temperature sensor 41 that detects the temperature of the mixed hot water. Further, the hot water tap switching means 3 includes a flow rate control section 42 that controls the hot water tap flow rate;
It is formed by a flow rate control gear unit 42a that drives a flow rate setting mechanism with a DC motor, water stop valves 43a, 43b, and 43c, and a flow rate sensor 44 provided after the water stop valve 43a. In addition, the hot water mixing means 2, the hot water output switching means 3, and the control circuit block 7 that controls both means 2.3.
In the figure, 45 is a flow rate sensor that detects the drainage state, and 46 is a water level sensor that detects the water level in the bathtub. V! is an opening/closing control signal outputted from the control circuit block 7a to open and close the water stop valves 43a, 43b, and 43c, and V! l, ~VS, are each sensor 41.44°45.
46 and input to the control circuit block 7a, the sensor output signals Vd, Vd2 are output from each gear unit 40a.
, a drive signal for driving the motor of 42a, Vp,
, vp2 is the operating status of gear units 40a and 42a! This is a position signal indicating (setting state B).

On the other hand, the control means for controlling the hot water mixing means 2 and the hot water output switching means 3 is composed of a main control unit 6 that sets various initial states, and a control circuit block 7a integrated with the drive unit 7. Each hot water supply control unit 5a, 5b.

Data transmission between the main control unit 5c, the main control unit 6, and the control circuit block 7a is performed via a signal line 8 by time division multiplex transmission.

FIG. 3 is a block circuit diagram showing a configuration example of the hot water supply control units 5a, 5b, 5c, the main control unit 6, and the drive unit 7.
．． A signal line 8 for time division multiplex transmission is wired between 7 and 7.

Here, the hot water supply control units 5a, 5b, and 5c include a CPU l0 that performs arithmetic processing such as data setting display and data transmission.
, an operation switch 11 for controlling hot water supply, setting the water temperature, etc.; a display 12 for displaying the water temperature, operating status, and an error code indicating the details of the abnormality in the event of a system abnormality; A sounding body 13 consisting of a piezoelectric buzzer that generates an alarm sound when an alarm occurs, and a transmission input/output circuit 1 that transmits and receives a transmission signal for time-division multiplex transmission of data via a signal line 8.
4, and a stabilizing power supply circuit 15 that rectifies and smoothes the transmission signal to form a circuit power supply (+5V).

The main control unit 6 also includes a CPU 20 that performs arithmetic processing such as a timer clock, data setting display, data transmission, etc., an operation switch 21 that performs control of the timer clock, hot water supply/drainage control, operation mode setting, etc. A setting volume 22 for setting the status (reference value), a display 23 for displaying the hot water supply control status, and a clock display 24 for displaying the operation of the timer clock and the content of the abnormality in the event of a system abnormality using an abnormality code. , a sounding body 25 that generates an operation sound when operating a switch or a notification sound when an abnormality occurs, a transmission input/output circuit 26 that transmits and receives a transmission signal for time-division multiplex transmission of data, and a telephone line to the bathtub. Telecontroller 9 remotely controls hot water supply
Teleconverter input/output circuit 27 that transmits and receives data between
, a power outage detection circuit 28 that detects a power outage, a backup power supply circuit 28a equipped with an emergency storage battery that supplies power to the CPU 20 when a power outage is detected, a power supply block 29a that forms a system power supply (+24V), and a step-down transformer 29b.
rectifies, smoothes and stabilizes the AC power input through the
It is formed of a stabilized power supply circuit 29c that forms a circuit power supply (+5V) that supplies power to the CPU 20, and a power switch 30 that turns on and off the power of the entire multi-point hot water supply system except for the CPU 20.

Further, the control circuit block 7a of the drive unit 7 is
A CPU 31 that performs arithmetic processing such as data transmission, water supply and drainage control, hot water temperature control, system abnormality detection, and abnormality notification, and water stop valves 43a to 43 for controlling hot water output to each hot water supply port 4a, 4b, and 4c.
Solenoid driver 3 that drives solenoid c
2, a motor driver 33a that drives the stepping motor of the hot water temperature control gear unit 40a, a motor driver 33b that drives the DC motor of the flow rate control gear unit 42a, and a temperature sensing element consisting of a pair of thermistors that constitute the temperature sensor 41. 41a.

A calculation circuit 34 detects the deviation of the hot water temperature detected by 41b and calculates the deviation from the set hot water temperature, and a watchdog timer detects runaway of the CPU 31 and inputs the detected result to the solenoid driver 32. An abnormal hot water discharge prevention circuit 35 that prevents abnormal hot water from flowing from 4a, 4b, and 4c, and an automatic drain valve control circuit 36 that controls the opening and closing of the automatic drain faucet 47.
, a transmission input/output circuit 37 that transmits and receives transmission signals that are time-division multiplexed via the signal line 8, and a control power supply circuit 38a that forms a control power supply (+24V) that supplies power to the driver.
and a stabilized power supply circuit 38b that forms a circuit power supply (+5V) that supplies power to the CPU 31.
0b is a position detection circuit that detects the operating position of the hot water temperature control gear unit 40a, and 42b is a flow rate control gear unit 42a.
This is a position detection circuit that detects the operating position of the

By the way, the transmission control means for controlling data transmission between each unit 5a, 5b, 5c, 6.degree. , 5b, 5c, and 6 are sequentially cyclically polled to set the data transmission timing, and time-division multiplex transmission of data such as operation switch data, setting data, abnormality content data, etc. is performed using transmission signals in a predetermined format. It is supposed to be done.

Further, data such as timer time data, hot water temperature setting data, hot water filling amount setting data, etc. are stored in a data memory provided in the main control unit 6, and this data memory is supplied with power by the backup power supply circuit 28a, and the data is stored in the event of a power outage. prevents it from disappearing. Further, when a system abnormality occurs, the contents of the abnormality are determined, an abnormality code corresponding to the abnormality contents is created, and this abnormality code is transmitted to the other unit 5a.

5b, 5c, and 6 is mainly performed by the CPU 31 of the drive unit 7, which receives the error code transmitted via time division multiplexing via the signal line 8 and sends it to the display 12.
The arithmetic processing to be displayed in 24 is performed by each unit 5a,
c, is performed on CPU 10°20 of 6. However, each unit 5a, 5b.

Detection of system abnormalities that can be determined individually by units 5c and 6 and creation of abnormal codes are performed by each unit 5a, 5b, 5c, and 6.
In this case, the abnormality code may be transmitted to the other units 5a, 5b, 5c, and 6 via the drive unit 7 and displayed.

FIG. 4 is a front view of the hot water supply control unit 5a for a bathtub. There is a hot water selection switch 11b that switches whether or not water is to be dispensed, a hot water supply control switch llc that dispenses hot water, and a hot water supply control switch llc that sets the temperature of the hot water that is dispensed (
High/low setting) hot water temperature setting switches 11d, 11
d°, hot water amount setting switches lie, lie' that set the amount of hot water to be dispensed (set by more/less), and a drain control switch llf that controls the opening/closing of the drain valve, and an indicator that displays the operating status. Reference numeral 12 indicates a display element 12a that displays the set hot water temperature and also displays the details of the abnormality in the event of a system abnormality using an abnormality code, light emitting diodes 12b and 12b' that display hot water/cold water, and the status of the drain plug. It is formed by a light emitting diode 12c that displays.

FIG. 5 is a front view of the washing area hot water supply control unit 5b that is integrally formed with the washing area hot water supply port 4b, and a hot water supply control switch 11g that controls hot water supply from the shower hot water supply port 4c is added to the bathtub hot water supply control unit 5a. However, the drainage control switch llf and the light emitting diode 12c are omitted, and the other configuration and operation are the same as the hot water supply M control unit 5a for the pasta tub.

FIG. 6 shows a front view of the shower hot water supply control unit 5C.
, a cycle control switch llh that selects whether or not to change the water temperature cyclically when using the shower, and a temperature difference setting switch llh that sets the temperature difference during cycle control.
li, and a pitch setting switch llj that sets the changing pitch during cycle control. In addition, the display 12 that displays the setting state includes a light emitting diode 12d that displays the setting state of Nycle Mm, a light emitting diode 12e that displays the temperature difference (large, medium, small) during cycle control, and a light emitting diode 12e that displays the temperature difference (large, medium, small) during cycle control, and a change pitch (fast , normal, slow).

FIG. 7 shows a front view of the main control unit 6, and the operation switches 21 include clock control switches 21a to 21d for correcting the current time of the timer function clock and setting the timer time, and a drainage control switch for opening and closing the drain valve. A switch 21e, a hot water supply control switch 21f that controls the fixed amount of hot water dispensed from the hot water supply port 4a of the bathtub A, a reserved hot water supply control switch 21g that causes hot water to be filled into the bathtub at a preset time, and a normal operation mode and a reference value. It is formed by a mode changeover switch 21h for selecting the correction mode to be corrected. In addition, the display 23 that displays the operating status includes a light emitting diode 23a that displays the drain valve status (open → flashing, closed → continuous lighting), and a hot water supply status display (lit → normal hot water supply, IHz flashing → timer reservation hot water supply, 2Hz). A light emitting diode 23b that performs flashing → remote hot water supply using a teleconverter), a light emitting diode 23C1 that displays the setting of reserved hot water supply (lights on → in reservation, off → cancels reservation), a light emitting diode 23d that displays the correction status (direction arrow and appropriate mark), 23e.

On the other hand, the clock display 24 is formed of a liquid crystal display element that displays the current time and timer time, and when an abnormality occurs in the system, the content of the abnormality is displayed using an abnormality code. In addition, the setting volume 22 sets the reference value (standard water temperature) of hot water dispensed from the bathtub hot water supply port 4a by 3.
Volume 2 set in the range of 8 to 45℃ (in 1℃ steps)
2a, a volume 22b for setting the standard value (standard hot water temperature) of the hot water dispensed from the shower hot water supply port 4C in the range of 35 to 42°C (in units of 1°C), and a standard value for the amount of hot water filled in the bathtub. (
A volume 22c for setting the standard amount of hot water (standard hot water amount) in the range of 150 to 3501 (11 steps), a volume 22d for setting the standard value (standard flow rate) of the hot water output flow rate, the piping situation at the installation site, and the characteristics of the hot water temperature control unit 40. Volume 22a in consideration of variations etc.

The reference correction volume 22e corrects the reference value set by the reference correction volume 22b. In addition, in the example,
The standard temperature of hot water dispensed from the washing area hot water supply port 4b is set to be the same as the standard hot water temperature of the shower hot water supply port 4C.

The operation of the embodiment will be described below. Now, in the multi-point hot water supply system according to the present invention, hot water mixing means 2 mixes an appropriate amount of water with hot water from water heater 1 to form hot water at a predetermined temperature, and hot water switching means 3 switches each hot water supply port 4a,
The hot water supply control switch 11a and the hot water temperature setting switch 1 are used to set the hot water temperature.
1d.

11d° and a temperature difference setting switch 111 allow hot water supply control and hot water temperature setting. Also, the volume 22a of the main control unit 6.

The standard hot water temperature set in the hot water temperature setting switch 11d of each hot water supply control unit 5a, 5b.

11d°, and the hot water temperature set corresponding to each hot water supply port 4a, 4b is displayed on the display element 12 immediately after the setting is changed.
It is designed to be digitally displayed at a.

By the way, in the embodiment, the amount of hot water filled when dispensing a fixed amount of water to the bathtub hot water supply port 4a can be set arbitrarily (in 11 steps in the embodiment) using the setting volume 22c of the main control unit 6. The quantitative hot water supply control means starts dispensing hot water at a preset hot water temperature from the bathtub hot water supply port 4a when the water supply control switch 21f for fixed hot water dispensing is turned on, and also starts dispensing hot water at a preset hot water temperature from the bathtub hot water supply port 4a. The system is designed to stop the hot water supply when the hot water level is reached. In addition, the hot water output amount measuring means is formed by a counter that counts up the pulses output from the flow sensor (pulses output according to the rotation of the impeller arranged in the flow path), and the measured hot water output amount data is , and is stored in a storage means consisting of an internal memory of the CPU 20 that is supplied with power from the backup power supply circuit 28a, so that it will not be erased in the event of a power outage.

FIG. 8 is a flowchart showing the operation during a power outage, and
The PU 20 checks whether a power outage detection signal is output from the power outage detection circuit 28, and if a power outage is detected, it immediately stops dispensing hot water, and when the power is restored, the storage device The hot water supply amount data stored in the counter is preset in the counter and the remaining fixed amount hot water supply is resumed. Therefore, even in the event of a power outage, the fixed amount hot water supply function is not impaired, and a hot water supply system that does not require special operations in the event of a power outage can be provided. In addition, in the embodiment, if there is an instruction to dispense hot water from other hot water ports 4b, 4c during quantitative dispensing, the quantitative dispensing can be temporarily interrupted and hot water can be dispensed as appropriate through interrupt processing, making it easier to use. It's going to get better. In addition, FIG. 9 is a time chart showing the above operation, and FIG.
) is the pulse signal output from the flow sensor, and (b) in the same figure
(e) shows the state of hot water coming out from the bathtub hot water supply port 4a, and (e) shows the state of hot water coming out from the other hot water supply ports 4b and 4c.

[Effects of the Invention] The present invention is configured as described above, and when the operation switch for quantitative hot water dispensing is turned on, it starts dispensing hot water at a preset temperature from the bathtub hot water supply opening, and also starts dispensing hot water at a preset temperature from the bathtub hot water supply opening, and also starts dispensing hot water at a preset temperature. In a hot water supply system equipped with a quantitative hot water supply control means that stops hot water supply when a preset amount of hot water is reached, the hot water supply system includes a storage means with a backup function that stores the measured amount of hot water dispensed, and a power outage that detects a power outage. The metered hot water dispenser is configured to stop the metered hot water dispense when a power outage is detected, and restart the remaining metered hot water dispense based on the amount of hot water stored in the storage means when the power is restored; This has the effect of providing a hot water supply system that does not require any special operation when a power outage occurs, and the fixed hot water supply function is not impaired even in the event of a power outage.

[Brief explanation of the drawing]

FIG. 1 is a schematic configuration diagram showing the arrangement of a multi-location hot water supply system using an operation display device according to the present invention, FIG. 2 is a schematic configuration diagram of an embodiment of the present invention, and FIG. 3 is a block circuit diagram of the same as above. 4 to 1 are front views of essential parts of the same as above, and FIGS. 8 and 9 are explanatory views of the same as above. 1 is a water heater, 2 is a hot water mixing means, 3 is a hot water output switching means, 4a, 4b, 4c are hot water supply ports, 5a, 5b, 5c are hot water supply control units, 6 is a main control unit, 7 is a drive unit, 21 is an operation switch , 22 is a setting volume. Agent Patent Attorney Ishi 1) Chief 7 Figure 2 Figure 1 Figure 6-Figure A7

Claims (1)

[Claims] (1) A hot water filling amount setting means that sets the amount of hot water to be dispensed from the bathtub hot water supply opening, a flow rate sensor that detects the flow rate of hot water dispensed from the bathtub hot water supply opening, and an outlet that measures the amount of hot water dispensed based on the output of the flow rate sensor. When the hot water amount measuring means and the fixed amount hot water dispensing operation switch are turned on, hot water starts dispensing at a preset hot water temperature from the bathtub hot water supply opening, and when the measured hot water dispensing amount reaches the set hot water filling amount, hot water is dispensed. In a hot water supply system equipped with a fixed amount hot water supply control means for stopping a hot water supply, a storage means with a backup function for storing a measured amount of hot water supply, and a power failure detection means for detecting a power outage,
A hot water supply system characterized in that a metered hot water supply means is formed to stop the metered hot water supply when a power outage is detected, and resume the remaining metered hot water supply based on the amount of hot water stored in the storage means when the power is restored.