JPH02161225A - Multiple location hot water supply system - Google Patents

Abstract

PURPOSE:To make it possible to set hot water temperature proper to various types of hot water supply ports by providing a control means which controls a hot water/water mixing means so that it may be equivalent to hot water temperature preset in a hot water control unit installed to conform to hot water supply ports during hot water supply time from each hot water supply port. CONSTITUTION:A hot water/water mixing means 2 is designed to mix hot water from a hot water supply device 1 with a proper amount of water, thereby forming a specified temperature. A hot water supply change over means 3 is adapted to supply hot water to each hot water supply port, say, 4a, 4b, and 4c properly while a hot water supply control switch 11a, hot water setting switches 11b and 11b' required to set hot water temperature, and a differential temperature setting switch 11i are adapted to perform hot water supply control and set hot water temperature. The standard hot water temperature preset by volumes 22a and 22b of a main control unit 6, is changed by hot water temperature setting switches 11d and 11d' of respective hot water supply control units 5a and 5b. The hot water temperature predetermined in each hot water supply port 4a and 4b is displayed in digital mode by a display component 12a immediately after the setting change.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a multi-point hot water supply system that can appropriately supply hot water to a bathtub hot water supply opening, a washing area hot water supply opening, a shower hot water supply opening, etc. in a bathroom.

[Prior art] Conventionally, this type of multi-point hot water supply system, which was able to supply hot water to the bathtub hot water supply outlet, wash area hot water supply outlet, shower hot water supply outlet, etc. in the bathroom, was designed to supply hot water to the hot water supply outlet and the hot water supply outlet from the water heater. The hot water mixing means is composed of a hot water mixing means for mixing a certain amount of water to form hot water at a predetermined temperature, and a hot water supply switching means for appropriately discharging the hot water formed by the hot water mixing means to a plurality of hot water supply ports. Hot water at a temperature preset by a hot water temperature setting switch in the control circuit block can be dispensed from each hot water outlet as appropriate.

[Problems to be Solved by the Invention] However, in the above-mentioned conventional example, only one hot water temperature setting switch for setting the temperature of hot water supplied from each hot water supply port is provided in the control circuit block of the hot water mixing means. Since only one type of hot water temperature could be set, the hot water temperature could be set higher or lower depending on the type of hot water inlet, making it inconvenient to use. 6 For example, it is desirable to have a higher water temperature at the bathtub hot water outlet.
It is desirable to have a lower water temperature at the wash area hot water outlet and the shower hot water outlet, but if you set the appropriate water temperature for one hot water outlet, the water temperature at the other hot water outlet will become higher or lower, making it difficult to use. There was a problem. Therefore, it is conceivable to change the hot water temperature settings appropriately during hot water supply to perform f & suitable hot water supply, but it is necessary to go to the place where the hot water temperature setting switch is located and change the hot water temperature setting, and when hot water is supplied, In addition to being cumbersome to operate, if you use the water without checking the set water temperature, hot water may come out of the washing area hot water supply opening or shower hot water supply opening, which poses a safety problem. there were.

The present invention has been made in view of the above points, and its purpose is to be able to set hot water temperatures suitable for different types of hot water inlets, and to check the five set hot water temperatures. To provide a multi-point hot water supply system that is easy to use and safe.

[Means for Solving the Problems] The multi-point hot water supply system of the present invention includes a water heater, a hot water mixing means for mixing an appropriate amount of water with hot water from the water heater to form hot water at a predetermined temperature, and a hot water mixing means for forming hot water at a predetermined temperature. In a multi-point hot water supply system comprising a hot water supply switching means for appropriately discharging hot water formed by a hot water supply means to a plurality of hot water supply ports, there are operating switches such as a hot water supply control switch, a hot water temperature setting switch for setting the hot water temperature, and a hot water temperature setting switch for setting the hot water temperature. A hot water supply control unit consisting of a display that displays the hot water temperature is provided at each hot water supply inlet, and when hot water is supplied from each hot water supply inlet, the hot water temperature set in the hot water supply control unit provided corresponding to the hot water supply inlet is adjusted. A control means is provided to control the hot water mixing means so that

Further, in the second aspect of the present invention, the hot water temperature setting range of each hot water supply control unit is made different depending on the type of hot water supply port.

Furthermore, according to a third aspect of the present invention, a specific hot water supply control unit is provided with remote control means for controlling the hot water supply and setting the hot water temperature from other hot water supply ports.

[Function] The present invention is configured as described above, and is a multi-purpose water heater that mixes an appropriate amount of water with hot water from a water heater to form hot water at a predetermined temperature, and then appropriately discharges the hot water from a plurality of hot water ports. In a spot hot water supply system, a hot water supply M control unit consisting of operation switches such as a hot water supply control switch, a hot water temperature setting switch for setting the hot water temperature, and a display that displays the set hot water temperature is installed at each hot water inlet. This allows hot water to be supplied from the hot water supply opening at the temperature set in the hot water supply control unit.
You can set the hot water temperature to suit different types of hot water taps.
In addition to being able to check the set hot water temperature before use, it is possible to provide an easy-to-use and safe multi-point hot water supply system.

Further, safety can be further improved by varying the hot water temperature setting range of each hot water supply control unit depending on the type of hot water supply port.

Furthermore, by providing a specific hot water supply control unit with remote control means for controlling hot water supply from other hot water ports and setting the hot water temperature, it is now possible to realize a multi-point hot water supply system that is more convenient to use. .

[Example] Fig. 1 shows an example of the arrangement of a multi-point hot water supply system according to the present invention, and Fig. 2 shows a schematic configuration of an embodiment.
A hot water mixing means 2 mixes an appropriate amount of water with hot water from the water heater 1 to form hot water at a predetermined temperature, and the hot water formed by the hot water mixing means 2 is appropriately supplied to a plurality of hot water ports 4a, 4b, and 4c. In a multi-point hot water supply system constituted by a hot water supply switching means 3 for discharging hot water, hot water supply control units 5a, 5b, 5c are provided corresponding to each hot water supply port 4a, 4b, 4c, respectively, and hot water supply control units 5a, 5b, 5c are connected to each other. hot water control switch,
Hot water supply control and hot water temperature setting are performed using operation switches such as a hot water temperature setting switch, and the set hot water temperature is displayed on a display, so that when hot water is supplied from each hot water supply port 4a, 4b, and 4c, the hot water supply is controlled and the hot water temperature is set. A control means is provided for controlling the hot water mixing means 2 so that the hot water temperature reaches the temperature set in the hot water supply control units 5a, 5b, 5c provided corresponding to the ports 4a, 4b, 4c. Here, the hot water mixing means 2 is
Hot water mixing section 40 that mixes hot water from the water heater 1 and city water
and a hot water temperature control gear unit 40a that rotationally drives the mixture ratio setting mechanism of the hot water mixing section 40 using a stepping motor;
It is formed by a temperature sensor 41 that detects the temperature of the mixed hot water. Further, the hot water output switching means 3 includes a flow rate control section 42 that controls the hot water output flow rate, a flow rate control gear unit 42a that drives a flow rate setting mechanism with a DC motor, and a water stop valve 4.
3a, 43b, 43c, and a flow rate sensor 44 provided downstream of the water stop valve 43a. The hot water mixing means 2, the hot water supply switching means 3, and the control circuit block 7a that controls both means 2.3 are integrated as a drive unit 7 and placed at an appropriate location in the bathroom.
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 based on water pressure. Va～V
c is output from the control circuit block 7a and is a water stop valve 43a;
Opening/closing control signal for opening/closing 43b, 43c, V B 1~
V S 4 is a sensor output signal output from each sensor 41, 44, 45, 46 and input to the control circuit block 7a, Vd, , Vd2 is a sensor output signal from each gear unit 40 a + 42
Drive signal to drive motor a, VPI, V
p2 is a position signal indicating the operating state R (setting state) of each gear unit 40a, 42a.

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.

5c, main M84 unit 6, and control circuit block 7a
Data transmission between the two 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 that controls hot water supply, hot water temperature setting, etc., a display 12 that displays hot water temperature, operating status, etc., and a piezoelectric buzzer that generates an operation sound when operating a switch or a notification sound when a system abnormality occurs. a sounding body 13, a transmission input/output circuit 14 that transmits and receives a transmission signal for time-division multiplex transmission of data via the signal line 8, and a stabilized power supply circuit that rectifies and smoothes the transmission signal to form a circuit power supply (+5V). 15.

The main control unit 6 also includes a CPU 20 that performs arithmetic processing such as a timer clock, data setting display, and data transmission, 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 condition R (reference value), a display 23 for displaying the control status, a clock display 24 for displaying the operation of the timer clock, operation sounds when operating switches, and when an abnormality occurs. between a sounding body 25 that generates a notification sound, transmission input/output circuits 26 and 5 that transmit and receive transmission signals for time-division multiplex transmission of data, and a teleconverter 9 that remotely controls hot water supply to the bathtub using a telephone line. A teleconverter input/output circuit 27 that transmits and receives data, 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, and a system power supply (+24V)
A power supply block 29a forming a step-down transformer 2
The stabilized power supply circuit 29c, which rectifies and smooths the AC power input through the AC power supply 9b to form a circuit power supply (15V) to supply power to the CPU 20, and the entire multi-point hot water supply system except for the CPU 20 are turned on. Power switch 3 to turn off
0.

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, and hot water temperature control, and each hot water supply port 4a.

A solenoid driver 32 that drives the solenoids of water stop valves 43a to 43c for controlling hot water output to 4b and 4c, a motor driver 33a that drives the stepping motor of the hot water temperature control gear unit 40a, and a DC motor of the flow rate control gear unit 42a. The motor driver 33b that drives the motor, the arithmetic circuit 34 that processes the outputs of temperature sensing elements 41a and 41b consisting of a pair of thermistors constituting the temperature sensor 41 and inputs the results to the CPU 31, and a watchdog timer that detects runaway of the CPU 31. By inputting it to the solenoid driver 32, the hot water supply ports 4a, 4b,
4c, an automatic drain valve control circuit 36 that controls opening and closing of the automatic drain valve 47, and a transmission circuit that transmits and receives transmission signals that are time-division multiplexed via the signal line 8. An input/output circuit 37 and a control power supply circuit 3 that forms a control power supply (+24V) that supplies power to the driver.
In the figure, 40b is a position detection circuit that detects the operating position of the hot water temperature control gear unit 40a, and 42b is a position detection circuit that detects the operating position of the hot water temperature control gear unit 40a. Flow control gear unit 4
This is a position detection circuit that detects the operating position of 2a.

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, and abnormality display data 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.

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 (
hot water temperature setting switch lid, 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 opening/closing of the drain valve, and an indicator that displays the operating status. Reference numeral 12 denotes a display element 12a that displays the set water temperature and an abnormality code in the event of a system abnormality, and a light emitting diode 12b that displays hot water/cold water.
, 12b', and a light emitting diode 12C that displays the status of the drain plug.

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 bathtub hot water supply control unit 5a.

FIG. 6 shows a front view of the shower hot water supply control unit 5c, and the operation switch 11 is a hot water supply control switch lla that controls on/off the hot water supply from the shower hot water supply port 4c.
, 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 cycle control, 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 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, a normal operation mode, and a reference value. and a mode changeover switch LLh for selecting a correction mode for correcting. In addition, the display 23 that displays the operating status displays the drain valve status (open →
Flashing, closed and continuous lighting), hot water supply status display (lit → normal hot water supply, IHz flashing → timer reservation hot water supply, 2Hz flashing → teleconverter hot water supply), reservation hot water supply setting display (lit → reservation in progress, off → reservation cancelled), correction status Display (directional arrows and suitability marks)
The clock display 24 is formed by a liquid crystal display element (formed with a trowel) that displays the current time, timer time, and an abnormality code when an abnormality occurs. The setting volume 22 includes a volume 22a that sets the reference value (standard hot water temperature) of the hot water dispensed from the bathtub hot water supply port 4a in the range of 38 to 45°C (in units of 1 °C), and a volume 22a that sets the reference value (standard hot water temperature) of the hot water dispensed from the bathtub hot water supply port 4a, and a volume 22a that sets the reference value (standard water temperature) of hot water dispensed from the bathtub hot water supply port 4a, and a volume 22a that sets the reference value (standard hot water temperature) of hot water dispensed from the bathtub hot water supply port 4a in the range of 38 to 45 °C (in units of 1 °C). A volume 22b is used to set the standard value of the hot water temperature (standard water temperature) in the range of 35 to 42°C (in 1°C increments), and the standard value of the amount of hot water in the bathtub (standard hot water amount) is set in the range of 150 to 3501 ( 11 steps), a volume 22d to set the reference value (standard flow rate) of the hot water output flow rate, and volumes 22a and 22b in consideration of the piping situation at the installation site and variations in the characteristics of the hot water temperature control unit 40. and a reference correction volume 22e for correcting the reference value set in .

In the embodiment, the standard temperature of the hot water discharged 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.
1b.

Hot water supply control and hot water temperature setting can be performed by 11b' and a temperature difference setting switch lli.

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.

The hot water temperature changed in step 11d' and set at each hot water inlet 4a, 4b is digitally displayed on the display element 12a immediately after the setting is changed.

In addition, the temperature difference when cyclically controlling the water temperature during shower use can be set to "large" or "medium" using the light emitting diode 12e.
It is set to be displayed as "small".

Therefore, hot water at the hot water temperature set and displayed in the hot water supply control units 5a, 5b, 5c can be supplied from each hot water supply inlet 4a, 4b, 4c.

In addition to being able to dispense hot water at the appropriate temperature from 4b and 4c, it is also possible to check the set water temperature before use, making it possible to provide an easy-to-use and safe multi-point hot water supply system. ing. However, the range of water temperature that can be set using the hot water temperature setting switches lid and lid' is 30 to 45 degrees Celsius when hot water is supplied to the bathtub, 30 to 42 degrees Celsius when hot water is supplied to the washing area and shower, and 3 degrees Celsius when controlling the shower cycle.
The temperature is set at 8 to 42 degrees Celsius, and even if there is a production error, hot water is supplied within the appropriate temperature range according to the usage conditions, improving safety. In addition, the hot water supply switch 11c is activated only when it is pressed at the same time as the "high" water temperature setting switch lid to prevent the risk of hot water being inadvertently dispensed due to an operational error. 46~55°
C1 washing area hot water supply → 43-55℃). In addition, when the hot water temperature setting value reaches the upper or lower limit value during the hot water temperature setting operation using the hot water temperature setting switches Ild and lid', or when hot water is dispensed, a sounding body 13 consisting of a piezoelectric buzzer sounds to indicate this fact. It is designed to notify you.

FIG. 8 shows another embodiment of a hot water supply control unit 5b' for a washing area.
This figure shows a front view of a specific hot water supply control unit (in the example, the hot water supply control unit for the washing area) 5b', which controls the output of hot water from another hot water supply port (in the example, the bathtub hot water supply port) 4a and sets the hot water temperature. The hot water supply control unit 5b for the washing area shown in FIG. Light emitting diode 1 for shower hot water display
2h is added.

In this embodiment, since hot water supply from the bathtub hot water supply port 4a can be controlled by the hot water supply control unit 5b' for the washing area, the hot water supply control unit 5a for the bathtub can control the hot water supply from the bathtub hot water supply port 4a.
This makes it possible to realize an easy-to-use multi-point hot water supply system even when the system is located far away from the water supply system. Note that the other configurations and operations are the same as those in the previous embodiment.

[Effects of the Invention] The present invention is configured as described above, and hot water from a water heater is mixed with an appropriate amount of water to form hot water at a predetermined temperature, and the hot water is appropriately discharged from a plurality of hot water ports. In a multi-point hot water supply system, a hot water supply control unit consisting of operation switches such as a hot water control switch, a hot water temperature setting switch for setting the hot water temperature, and a display that displays the set hot water temperature is installed at each hot water inlet. This allows hot water to be supplied from the hot water supply opening at the temperature set in the hot water supply control unit.
Not only can you set the water temperature suitable for each hot water supply port, but you can also check the set water temperature and use it.
This has the effect of providing a multi-point hot water supply system that is easy to use and safe.

Further, by varying the hot water temperature setting range of each hot water supply control unit depending on the type of hot water supply port, there is an effect that safety can be improved.

Furthermore, by providing a specific hot water supply control unit with a remote control means for controlling hot water supply from other hot water ports and setting the hot water temperature, there is an effect that a multi-point hot water supply system that is even more convenient to use can be realized.

[Brief explanation of the drawing]

FIG. 1 is a schematic configuration diagram showing the arrangement of a multi-point hot water supply system according to the present invention, FIG. 2 is a schematic configuration diagram of an embodiment of the present invention, FIG. 3 is a block circuit diagram of the same, and FIGS. The figure is a front view of the main parts same as the above, and FIG. 8 is a front view of the main parts of another embodiment. 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, 11 is an operation switch , 12 is a display. Agent Patent Attorney Ishi 1) Chief 7, Figure 6, Figure 7

Claims (3)

[Claims] (1) A water heater, a hot water mixing means for mixing an appropriate amount of water with the hot water from the water heater to form hot water at a predetermined temperature, and appropriately dispensing hot water formed by the hot water mixing means to a plurality of hot water ports. In a multi-point hot water supply system consisting of a means for switching hot water output, each hot water supply control unit consists of operation switches such as a hot water control switch, a hot water temperature setting switch for setting the hot water temperature, and a display for displaying the set hot water temperature. A control means is provided at each hot water supply port and controls the hot water mixing means so that the hot water temperature reaches the temperature set in the hot water supply control unit provided corresponding to the hot water supply port when hot water is supplied from each hot water supply port. A multi-point hot water supply system featuring: (2) The multi-point hot water supply system according to claim 1, wherein the hot water temperature setting range of each hot water supply control unit is made different depending on the type of hot water supply port. (3) The multi-point hot water supply system according to claim 1, wherein a specific hot water supply control unit is provided with remote control means for controlling hot water supply from other hot water supply ports and setting the hot water temperature.