JP3257032B2 - Water heater - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hot water supply device for stopping hot water in a bathroom, a washbasin, a kitchen, or the like, and for obtaining a desired flow rate and temperature.

[0002]

2. Description of the Related Art A conventional hot water supply apparatus of this type is, for example, as shown in FIG.
424).

In FIG. 6, a tap water 1 is branched into two systems, and a hot water supply pipe line 3 passing through a hot water supply device 2 and a water supply pipe line 4 are connected to a constant temperature hot water supply apparatus 5. Inside the constant temperature hot water supply apparatus 5, a hot water supply valve 3 is connected to the hot water supply pipe 3 and a water quantity valve 7 is connected to the water supply pipe 4, and these valves adjust the mixing ratio of hot water and water. The mixing line 8 is provided with a thermistor 9 for detecting the temperature of the mixed hot water. Based on a signal from the thermistor 9 and a signal from a controller 10 for arbitrarily adjusting the temperature of the mixed hot water, the control device 11 controls the water quantity valve 6 and the The opening of the water quantity valve 7 is controlled. Mixing water is supplied to the faucet 1 provided at the end of the mixing line 8.
After that, the water is supplied to the bathtub 13 to be supplied with hot water. The water quantity valve 6 and the water quantity valve 7 are driven by a water quantity valve motor 14 and a water quantity valve motor 15 controlled by the control device 11, and perform feedback control by a signal of the thermistor 9.

[0004]

However, the conventional structure as described above has the following problems. (1) Basically, the hot water in the hot water supply pipe 3 and the water in the water supply pipe 4 are adjusted and controlled by controlling the opening degrees of the hot water quantity valve 6 and the water quantity valve 7 while feeding back the temperature signal of the thermistor 9. The hot water is supplied from the faucet 12 at a desired hot water temperature while adjusting the mixing ratio of the high-temperature hot water and the water. However, in actuality, with such a configuration, the degree of opening of the faucet 12 and the primary pressure fluctuation of the hot water quantity valve 6 and the water quantity valve 7 influence, and so on.
It could not be put to practical use. (2) Assuming that the desired hot water temperature can be controlled by mixing high-temperature hot water and water, for example, when it is desired to use a small amount of hot water in a kitchen or the like and use it with a small amount, the faucet 12 reduces the flow rate. In conjunction with this, the openings of the water quantity valve 6 and the water quantity valve 7 are inevitably reduced, and the amount of water flowing through the water heater 2 falls below the lower combustion limit flow rate, so that the heating of the water heater 2 may be stopped. In other words, there is a problem that a suitable temperature of hot water cannot be obtained when a small amount of hot water is supplied. (3) In recent years, hot water heaters are mainly provided with a remote controller for setting a hot water temperature to a desired hot water temperature. In this case, the user sets the hot water temperature with the remote controller of the water heater 2 and sets the hot water temperature from the faucet 12 with the controller 10. There is a problem that the user has to operate the device by hand, which is troublesome to use.

Accordingly, the present invention is to solve the above-mentioned conventional problems, and to provide a hot water supply apparatus in which the operation of stopping hot water, adjusting the flow rate, adjusting the hot water temperature, switching hot and cold water, and the like can be easily performed by one operation section. With the goal.

[0006]

In order to achieve the above object, the present invention provides a water heater for heating water to supply hot water, a hot water supply inlet connected to a hot water supply pipe communicating with the water heater, and a water supply source. It has a water inlet connected to the water supply line, a discharge port for discharging hot water and water, and selectively switches between hot water and water, and electrically controls the two-fluid control valve and the two-fluid control valve that respectively control the flow rate. A hot water supply terminal provided with a driving means for driving, a valve controller for electrically controlling the hot water flow or the water flow rate by electrically controlling the driving means, a power switch for instructing the operation of the hot water supply apparatus, and setting a hot water temperature. A water heater remote controller, an operation switch for instructing operation of both the water heater terminal and the water heater, a water temperature setting switch for varying the hot water temperature of the water heater, and an electric signal sent to the valve controller to send hot water and water. Adjust hot water switch and flow rate Comprising a terminal remote control with a display for displaying the Detoma switches and the setting state to stop issuing a flow control switch and hot-water, the end and the hot water supply terminal
The remote controller is integrated with the remote controller.

[0007]

According to this configuration, when the user instructs the selection of either hot water or cold water using the hot water switch of the terminal remote controller, the valve controller in accordance with the selection selects the hot water or cold water for the two-fluid control valve. Is electrically controlled so as to open the switch. Further, the valve controller drives the two-fluid control valve in accordance with the operation of the flow rate control switch of the terminal remote controller, and the valve opening is controlled so that a desired flow rate is obtained. Further, when the hot water temperature setting switch of the terminal remote controller is operated, an electric signal is transmitted to the hot water heater controller, and the outlet temperature of the hot water heater is controlled to a desired temperature, and the hot water of the controlled hot water heater is controlled. Acts so that hot water is discharged from the discharge port.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS.

1 to 3, reference numeral 20 denotes a hot water supply inlet 16 to which hot water is supplied via a hot water supply line 3 from a hot water supply device 2 for heating water in a water supply 1, and a water supply inlet 16 via the water supply line 4 from the water supply 1. Inlet 17 through which water is supplied, and outlet 1 using hot water
The hot water supply terminal 19 having 8 is a two-fluid control valve. The two-fluid control valve 20 is connected to the hot water supply inlet 16 and the discharge port 1.
A second valve port 22 provided between the water inlet 17 and the discharge port 18; a first valve port 21 provided between the water inlet 17 and the discharge port 18;
When the valve port 21 is open, the second valve port 22 is closed,
And when the second valve port 22 is open, the first valve port 21
Are driven in a closed state.
The valve controller 25 controls the driving of the valve bodies 23 and 24 by a driving unit 26 that electrically drives the valve bodies 23 and 24 by electric motors, so that the flow rate of hot water flowing from the hot water supply inlet 16 to the discharge port 18 or the water flow rate from the water inlet 17 is The flow rate of water flowing to the discharge port 18 is controlled.

Reference numeral 27 denotes a water heater remote controller, which is provided with a power switch 28 of the water heater 2, hot water temperature setting switches 29 and 30 for setting a hot water temperature, and a hot water temperature indicator 31.
Reference numeral 32 denotes a terminal remote controller, as shown in FIG. 3, an operation switch 33 for the hot water supply terminal 19 and the hot water supply 2 and the hot water supply 2
Hot water temperature setting switches 35 and 36 for sending out an electric signal to a hot water supply controller 34 for controlling the hot water temperature and varying the hot water temperature.
A water / water selector switch 37 for sending an electric signal to the valve controller 25 to switch between hot and cold water, flow rate adjusting switches 38 and 39 for adjusting the flow rate, and a start / stop switch 40 for stopping and starting hot and cold water. The display unit 41 for displaying the status is provided. In FIG. 1, reference numeral 42 denotes a flow rate sensor provided for controlling the flow rate of hot water or water with higher precision. The housing 43 integrally forms the hot water supply terminal 19 and the terminal remote controller 32.

Next, the operation of the above configuration will be described. When the operation switch 33 of the terminal remote controller 32 is operated, the display unit 4
When 1 is turned on and the power switch 28 of the water heater remote control 27 is off, the power of the water heater 2 is turned on, and the initial value (for example, 40 ° C.) of the set temperature of the water heater 2 is displayed on the display unit 41, When the power switch 28 of the water heater remote control 27 is turned on, the temperature set by the water heater remote control 27 is displayed on the display section 41 of the terminal remote control 32, and the water heater controller 33 is adjusted in accordance with the set temperature. The outlet temperature of the water heater 2 is controlled.

The tapping switch 40 is operated to start tapping. The initial state of the tapping switch 36 is set to the tapping side, and the valve controller 25 of the hot water supply terminal 19 is driven by the drive unit 2.
6, the first valve port 21 of the two-fluid control valve 20 is opened,
Hot water at a temperature controlled by the water heater 2 (initial temperature is 40 ° C.) is discharged as it is. However, when the temperature set by the water heater remote controller 27 exceeds a predetermined temperature (for example, 47 ° C.), the valve controller 25 prevents the hot water from being discharged unless the set temperature is lowered to the predetermined temperature (here, 47 ° C.). Is in control. The amount of hot water being discharged is an initial value (for example, 10
(Liter), the flow rate is fed back by the flow rate sensor 42, the valve opening of the first valve port 21 is adjusted, and the amount of hot water is discharged in accordance with the set flow rate. Thereafter, when the set flow rate is changed, the flow rate adjusting switches 38 and 39 are operated to control so that a desired flow rate of hot water is obtained. When water is desired, the hot water switching switch 37 is operated and the valve controller 25 is driven. 26, the second valve port 22 of the two-fluid control valve 20 is opened, and water is discharged at a set flow rate. When water is selected by the hot water switch 37, the water heater 2 Discharge can be performed regardless of the set temperature.

When the operation switch 33 of the terminal remote control 32 is turned off, the display 41 is turned off, the control of the hot water supply terminal 19 is stopped, and when the power switch of the water heater remote control 27 is not turned on, the power supply of the water heater 2 is turned off. Is turned off.

According to the structure of this embodiment, it is possible to obtain a desired temperature and amount of hot water as well as to stop the hot water and the water as described above. It can be done simply by touching the switch on the terminal remote controller 32. In addition, when the operation switch 33 of the terminal remote controller 32 is turned on, the power of the water heater 2 is turned on at the same time as the water heater terminal. The hot water heater 2 can be turned on and off at the point of use without having to go to the remote control 27 of the water heater remote from the point of use.

As a second embodiment, which is another example of the present invention, the overall configuration is the same as that of the above-described embodiment, and a different terminal remote controller 32 is shown in FIG. The start / stop switch 40 of the terminal remote controller 32 also serves as the operation switch 33. When operated, the display unit 41 is turned on, and the water heater remote controller 2 is turned on.
7 is turned off, the power of the water heater 2 is turned on, and the initial value of the set temperature of the water heater 2 (for example, 40)
° C) is displayed on the display unit 41, and when the power switch 28 of the water heater remote control 27 is turned on, the temperature set by the water heater remote control 27 is displayed on the display unit 41 of the terminal remote control 32. Water heater controller 33 controls the outlet temperature of water heater 2 in accordance with the set temperature. However, when the temperature set by the water heater remote controller 27 exceeds a predetermined temperature (for example, 47 ° C.), the set temperature is automatically changed to an initial value (for example, 40 ° C.), and thereafter, tapping is started. . When the hot water or the state in which the tapping of the water is stopped continues for a predetermined time (for example, 30 minutes), the display unit 41 of the terminal remote control 32 is turned off, and the control of the hot water supply terminal 19 is stopped.
When the power switch of the water heater remote control 27 is not turned on, the power of the water heater 2 is turned off.

With the above configuration, the stop / stop switch 40 of the terminal remote controller 32 also functions as the operation switch 33.
The number of switches of the terminal remote controller 32 is reduced, the troublesome operation is slightly reduced, and the usability is improved. Also,
The state in which the hot water or the tapping of the hot water is stopped is maintained for a predetermined time (for example, 3 hours).
(0 min), the control of the hot water supply terminal 19 is stopped and the power of the hot water supply 2 is automatically turned off, thereby saving power.

As a third embodiment, which is another embodiment of the present invention, the overall configuration is the same as that of the second embodiment, and the start / stop switch 40 of the terminal remote controller 32 is operated by the operation switch 33 as shown in FIG. When this is operated, the valve controller 25 of the hot water terminal 19 discharges hot water or water through the driving device 26, and at the same time, when the power switch 28 of the hot water remote controller 27 is off, the power of the hot water Is turned on together with the display of the water heater remote control 27. And terminal remote control 3
2 is turned on and the setting of the terminal remote control 32 has priority over the water heater remote control 27. In this case, the initial value (for example, 40 ° C.) of the set temperature by the terminal remote control 32 is displayed on the display 41. The temperature setting signal is sent to the water heater controller 33 to control the outlet temperature of the water heater 2. When the power switch 28 of the water heater remote 27 is turned on, the temperature is automatically changed to the set temperature of the terminal remote controller 32 regardless of the temperature set by the water heater remote 27, and the outlet temperature of the water heater 2 Can be changed only by the hot water temperature setting switches 35 and 36 of the terminal remote controller 32. When the use of the hot water supply terminal 19 is completed and the state in which the hot water or the tapping of the water is stopped continues for a predetermined time (for example, 30 minutes), the display unit 40 of the terminal remote controller 32
At the same time, the setting is automatically switched so that the setting of the water heater remote control 27 has priority over the terminal remote control 32.

In this embodiment, the hot water of the water heater 2 is used except for the water heater terminal 19, and the terminal water heater 32 is used simultaneously with the start of the use of the water heater terminal 19 in the bathroom regardless of the set temperature of the water heater remote controller 27. Since the temperature is automatically changed to an appropriate set temperature, it is easy to determine the settable temperature range of the terminal remote control 32 according to the place where the hot water supply terminal 19 is installed, and the burn is caused by high-temperature hot water accidentally. Control the temperature of the hot water from the water heater 2 to a suitable temperature,
It is safe and easy to use.

When the use of the water heater terminal 19 is finished, the water heater remote controller 2 is automatically operated by the terminal remote controller 32.
The setting of 7 has priority and switches to the temperature set by the water heater remote controller 27 at first.

[0020]

As described above, according to the hot water supply apparatus of the present invention, the following effects can be obtained. (1) Hot water / water stoppage, hot water / water switching, hot water temperature adjustment,
Adjustment of flow rate, etc. can be realized by a simple touch operation near the discharge port used by the user, and the power switch of the hot water heater can be turned on and off at the point of use at the same time as the hot water terminal is turned on by the operation switch of the terminal remote control It can be easy to use. (2) Since the start / stop switch of the terminal remote control also serves as the operation switch, the number of switches of the terminal remote control decreases,
Ease of operation is eliminated, and usability can be improved.
In addition, when the use of the hot water terminal is stopped, the power of the hot water terminal and the hot water heater is automatically turned off, so that power can be saved. (3) With the start of use of the hot water terminal, the terminal remote control has priority over the water heater remote control, the set temperature is automatically changed, and when the use is finished, the water heater remote control automatically takes priority over the terminal remote control. With this configuration, not only can usability be improved, but it is also easy to determine the settable temperature range of the terminal remote control according to the location where the hot water supply terminal is installed, so that you do not accidentally burn with hot water In addition, it is possible to control the hot water supply temperature of the water heater to an appropriate temperature and to make it safe.

[Brief description of the drawings]

FIG. 1 is an overall configuration diagram of a water heater in one embodiment of the present invention.

FIG. 2 is a cross-sectional view showing the operation of the valve body of the device (water side open).

FIG. 3 is a front view showing an example of a terminal remote controller of the apparatus.

FIG. 4 is a front view showing another embodiment of the terminal remote controller of the apparatus.

FIG. 5 is a configuration diagram of a conventional hot water mixing apparatus.

[Explanation of symbols]

 2 Hot Water Supply System 3 Hot Water Supply Line 4 Water Supply Line 16 Hot Water Supply Inlet 17 Water Inlet 18 Discharge Port 19 Hot Water Supply Terminal 20 Two Fluid Control Valve 25 Valve Controller 26 Driving Means 27 Hot Water Supply Remote Controller 28 Power Switch 32 Terminal Remote Control 33 Operation Switch 35 hot water temperature setting switch 36 hot water temperature setting switch 37 hot water switching switch 38 flow rate adjustment switch 39 flow rate adjustment switch 40 start / stop switch 41 display unit

────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-62-282811 (JP, A) JP-A-1-263418 (JP, A) JP-A-5-250044 (JP, A) (58) Field (Int.Cl. ⁷ , DB name) F24H 1/00 E03C 1/044

Claims (3)

(57) [Claims] 1. A water heater for heating water to supply hot water, a hot water supply inlet connected to a hot water supply line communicating with the hot water supply device, a water inlet connected to a water supply line communicating with a water supply source, and discharging hot water and water. A two-fluid control valve for selectively switching between hot and cold water and controlling flow rates, a driving means for electrically driving the two-fluid control valve, and an electric drive control for the driving means A hot water supply terminal provided with a valve controller for controlling the hot water flow rate or the water flow rate, a power switch for instructing the operation of the hot water supply device and a hot water supply remote control for setting a hot water supply temperature, and the hot water supply terminal device and the hot water supply device. An operation switch for instructing both operations, a hot water temperature setting switch for changing the hot water supply temperature of the water heater, an electric signal sent to the valve controller to switch between hot and cold water, a hot water switch, a flow rate adjusting switch for adjusting the flow rate, and hot water・ Stop stop to stop water Switch and a terminal remote control having a display unit for displaying each setting state , the hot water supply terminal and
A hot water supply device integrally comprising the terminal remote controller . The start / stop switch of the terminal remote control also serves as an operation switch. When this switch is operated, the valve controller of the hot water supply terminal discharges hot water or water via a driving device, and the power switch of the water heater remote control. When the water heater is turned off, the water heater is turned on, and when the state in which hot water or tapping of water is stopped continues for a predetermined time, control of the water heater terminal is stopped, and the power of the water heater is turned off. The hot water supply device as described. 3. The start / stop switch of the terminal remote control also serves as an operation switch, and when this switch is operated, the valve controller of the hot water supply terminal discharges hot water or water through a drive device and the power switch of the water heater remote control. When the water heater is turned off, the power of the water heater is turned on, the display of the terminal remote control is lit, and the setting of the terminal remote control has priority over the water heater remote control, and when the hot water or the tapping of the water stops for a predetermined time. 2. The hot water supply apparatus according to claim 1, wherein the control of the hot water supply terminal is stopped, the display of the terminal remote control is turned off, and the setting of the water heater remote control has priority over the terminal remote control.