JPS63282811A - Hot water supply device - Google Patents

Abstract

PURPOSE:To supply hot water from a hot water supplying machine without an error by turning on a power supply for the hot water supplying machine interlocking with the setting of a hot water supply setter and controlling the opening of a control valve. CONSTITUTION:The titled device is provided with electric control valves 27, 27' for supplying/stopping mixed hot water and the power supply for the hot water supplying machine to be electrically controlled at its operation is turned on while interlocking with the setting of the hot water supply setter 38 for setting up the supply/stop of mixed hot water based upon the control valves 27, 27'. When the control valves 27, 27' are opened in accordance with the setting of the setter 38 and mixed hot water is supplied, hot water is surely supplied from the hot water machine 16 to a hot water mixing valve 23, so that the start of hot water and the supply of mixed hot water can be surely executed only by the hot water supply setter 38.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a water heater using a mixing valve that mixes pumped water and water to obtain an appropriate temperature.

2. Description of the Related Art Conventionally, there has been a water heater of this type as shown in FIG. (For example, Japanese Utility Model Application No. 61-18424) In FIG. 5, the water supply 1 is branched into two systems, and a hot water supply pipe 3 passing through a water heater 2 and a water supply pipe 4 are connected to a constant temperature water heater 5. . Inside the constant temperature hot water supply device 5, the hot water supply pipe 3
A lift valve 6 is connected to the water supply pipe, and a water flow valve 7 is connected to the water supply pipe to adjust the mixing ratio. The mixing pipe 8 is provided with a thermistor 9 that detects the temperature of the mixed water, and a controller 1 that adjusts the signal of the thermistor 9 and the temperature of the mixed water as desired.
Based on the signal 0, the control device 11 turns on the water flow valve 6 and the water flow valve 7.
is controlled. The mixed hot water passes through a faucet 12 provided at the end of the mixing pipe 8 and is supplied to the bathtub 131 to which hot water is to be supplied.

The hot water flow valve 6 and the water flow valve 7 are driven by a hot water flow valve motor 14 and a water flow valve motor 15 which are controlled by a control device 11.
Feedback control is performed using a signal from the thermistor 9.

Problems to be Solved by the Invention However, the conventional configuration as described above has the following problems.

(1) The mixed water temperature can be adjusted and set using the controller 10, but hot water supply must be started and stopped using the faucet 12.
It was inconvenient to have to manually operate the faucet when supplying hot water.

(2) If the hot water heater 2 forgets to turn on the power and starts supplying hot water, the constant temperature water heater 5 cannot supply a constant temperature, and failures such as filling the bathtub 13 with water frequently occur.

The present invention solves these conventional problems and aims to provide a device that can supply hot water from a hot water heater.

Means for Solving the Problems In order to solve the above-mentioned problems, the water heater of the present invention includes an electric control valve for supplying and stopping mixed hot water. The power to the water heater, which controls the operation electrically, is turned on in conjunction with the setting of the water heater setting device, which sets the water heater to stop.

Effects of the present invention With the above-described configuration, when the control valve is opened and mixed hot water is supplied according to the settings of the hot water setting device, hot water is reliably supplied from the water heater to the hot water mixing valve, and the settings of the hot water setting device are With this system, it is possible to start hot water supply and ensure the supply of mixed hot water.

Example Embodiments of the present invention will be described below based on the accompanying drawings.

In FIG. 1, the intestine produced by the electrically controlled water heater 16 is introduced through the hot water side path 17, and the water is introduced through the water side path 18, which is a temperature control means (mixing unit 194). . The hot water and water then pass through check valves 20 and 21, a pressure balance valve 22 that balances the hot water pressure and water pressure, and then a mixing valve 23.
leading to. The mixing valve 23 is of an electrically controlled type driven by a motor, and the mixed hot water whose mixing ratio has been adjusted passes through the thermistor 24, flow sensor 25, and pressurizing pump 26 to the control valve A27.827'. reach. The control valve A27 opens and closes the hot water supply port A28, and the control valve 827' opens and closes the hot water supply port B29. The hot water supply port A28 requires hot water in a temperature range from cold water to about 45°C. It is connected to a shower 30 and a washroom 31 in the washing area via a path A32. Further, the hot water supply port B29 is connected via a path 835 to the outlet 34 of the bathtub 33, which requires not only water at around 42°C but also hot water. The hot water supply port A28 has a mechanical device equipped with a temperature sensing element that prevents hot water from being supplied to the shower 30 or the flush 31 in the event that the mixing valve 23 or the switching valve 27 malfunctions or the control circuit 36 malfunctions. A temperature safety valve 37 is provided. Additionally, a setting device 38 is provided in the bathroom for switching the hot water supply source and adjusting the temperature of the mixed hot water. Outside the bathroom, for example, in the kitchen, a remote control setting device 39 is provided that performs remote control hot water supply, timer hot water supply, or relaying the start of hot water supply by telephone.

Now, the water heater 16 is a gas instantaneous water heater, and when the power is turned on and the gas main valve is opened, the control valve 27
．． 27' is opened to allow water to flow, the flow rate sensor 40 detects water flow and opens the solenoid valve 41, ignition, combustion control by the thermistor 42 and gas proportional valve is performed, and hot water at a predetermined temperature is produced. Supplied. Turning on the power and changing the hot water temperature can be done using the water heater setting device 44. control valve 27.27
' is closed and water flow stops, the flow rate sensor 40 detects this and combustion is stopped. Due to the performance of the gas proportional valve 43 and burner, the detected flow rate value of the flow rate sensor 40 that starts and stops combustion is not completely zero, but varies from 1 to 3e/
It is set around minutes.

FIG. 2 shows details of the setting device 38. A ring and shower switch 4 instructing hot water supply to the shower 30 and a ring 31
5. A bathtub switch 46 for instructing hot water supply to the bathtub, a multi-flow switch 47 for increasing the flow rate, a low-flow switch 48 for increasing the flow rate, and a call switch 49 for calling someone else are provided facing the front. When the shower switch 45 or the bathtub switch 46 is pressed, the control valve A27 or the control valve B27' is opened, and the control valve A27 or B27' is opened. Hot water supply starts at the values set in the four volumes (not shown). When the user presses the shower switch 45 or the bathtub switch 46 again, the bathing station is stopped. In the area covered by the lid, there is a water filling volume 50 for setting the cumulative water flow value, a high switch 51 for changing the predetermined water temperature, a low switch 52, and a drain plug for receiving the signal of the remote control setting device 39. A confirmation switch 53 is provided.

In addition, a display 54 and a buzzer 55 are provided.

FIG. 3 shows details of the remote controller setting device 39. A remote control switch 56 that performs remote-control hot water supply, a timer switch 58 that performs hot water supply using a timer 57, and a timer display section 5
9. Adapter part 61 that enables hot water supply via telephone 60
, a temperature volume 62 for setting the hot water temperature, a buzzer 63
is provided. An if switch 64 for this mixing unit 19 system is also provided.

FIG. 4 shows a schematic configuration related to the power supply of the water heater of this embodiment. The water heater setting device 44 is provided with a power switch 65 that is manually turned on and off. In parallel with this, there is provided an automatic power switch 66 that turns on the power in conjunction with the shower switch 45 and the bathtub switch 46, and when either one is turned on, the flow rate sensor 40 reaches a predetermined value and turns on. When this happens, the control circuit 67 operates and the water heater 1
6 is driven.

This method of interlocking the power sources is just one example, and instead of configuring the automatic power switch 66 in parallel with the power switch 65 of the water heater, the automatic power switch 66 alone may be used or it may be connected in series with the flow rate sensor 40. In addition, it is possible to link the power switch 64 of the mixing unit 19, share the power supply and consolidate it into one, or eliminate the power switch and turn on the power according to the operation of the shower, click switch 45, and bathtub switch 46. There are many ways to turn it off.

Further, the controller 36 of the mixing unit 19 and the control circuit 67 of the water heater are connected in a signal manner, and are configured so that the boiling temperature of the water heater 16 is higher than the set value of the mixed water temperature.

Next, the operation of this embodiment will be explained. For example, the setting device 38
When the shower switch 45 is pressed, the automatic power switch 66 of the water heater 16 is turned on immediately. At the same time, the control valve 27 opens the flow path, so the flow rate sensor 40 of the water heater 16 detects the flow, and the water heater 16 starts combustion and is supplied with positive energy.

The temperature and flow rate are set in advance in the shower switch 45 in accordance with this. Temporarily 40'C, 15e
/min, the mixing valve 23 and the control valve 27 perform control so that the mixed hot water is supplied at this value. The boiling temperature of the water heater 16 is automatically set to be slightly higher than the mixed water temperature of the mixing unit 19, for example, 48°C. For this reason, the temperature of the air passing through the station-side path 17 is as low as 48° C., so the heat radiation loss can be reduced. During hot water dispensing with the shower switch 45, even if you operate the high switch 51 to ensure safety, the temperature that can be raised is limited to 45°C, so the boiling temperature of the water heater 16 is also 48°C. A point is sufficient. If the shower switch 45 is pressed again before the integrated value set by the hot water filling volume 50 is reached, the control valve 27 is closed and hot water supply is stopped, but the automatic power switch 66 is held for a predetermined time.

This is because even if the flow rate sensor 40 goes to the OFF value and combustion stops, necessary controls for the sequence such as after-treatment of the exhaust gas remain, and the shower switch 45 is turned off again within a short time. When the hot water supply is restarted by pressing the button, the purpose is to eliminate the need to start the operation from the beginning and to quickly supply hot water. The holding time is, for example, about 1 minute. When the bathtub switch 46 is pressed, operate the high switch 51 to add hot water to the bathtub.
'C and hot water can be supplied. At this time, water heater 1
The boiling temperature of No. 6 is automatically increased from 48°C to 80°C, for example.

In the case of hot water supply using the remote control setting device 39, the same operation is performed, but in the case of timer operation, the automatic power switch 66 is turned on when the time to start hot water supply is reached for safety reasons. In particular, the present invention is definitely intuitive and effective when it comes to fixed-quantity water stopping, remote control, timer, and tele-controlled hot water supply that automatically fills a bathtub.

In the above operations, the electrically controlled mixing valve 23 is controlled in conjunction with the setting device 38, the shower switch 45, and the bathtub switch 46. This interlocking method includes a method of directly corresponding to these switches and a method of using a signal from the flow rate sensor 25. As a result, the mixing valve 23 is not energized while hot water supply is stopped, which saves power, and as the area around the thermistor 24 is cooled, the mixing valve opens the lift side and closes the water side. Since the operation is stopped, it is possible to prevent hot water from being temporarily supplied when hot water supply is restarted.

The effect of this embodiment is that the mixing valve 23 is electrically controlled and is controlled in conjunction with the shower switch 45 or bathtub switch 46, which sets the supply of mixed hot water. It has the effect of providing warm water and safely supplying hot water while saving electricity.

In addition, since the set temperature of the water heater 16 is linked to the set temperature of the mixing valve 23 and set high, it is possible to reliably obtain the desired hot water temperature and reduce heat radiation loss from the central channel 17. It has an effect.

Furthermore, since the hot water heater 16 is of an instantaneous type, it has the advantage that hot water can be supplied immediately and there is no heat radiation loss due to hot water storage.

In the above embodiment, an instantaneous water heater was used as the water heater 16, but an oil boiler that has a hot water storage tank and controls combustion and energization by detecting the temperature inside the tank with a temperature sensor or a boiler that uses late-night electricity may also be used. It may also be an electric water heater or the like. In these cases, the power supply is often kept on at all times unless the tank is not used for a long period of time.This is because it takes time for the tank to heat up and to protect the tank from cathodic corrosion. These water heaters may be used as mixing units for a relatively long time, for example, by interlocking with a power switch 69 provided on the remote control setting device 39.

In the case of timer hot water supply, it is effective to turn on the power early by setting a time limit for water heaters with these hot water storage tanks so that the water level is increased by dp prior to the hot water supply start time. Furthermore, the operation of the water heater can be ended early so that the remaining hot water in the hot water tank and piping can be discharged when the hot water supply is finished.

If you are using a type of water heater that has a storage IEi tank and controls the amount of heating by detecting the temperature inside the tank with a temperature sensor, and if you turn on the power in conjunction with the setting of the hot water setting device, Because it has a hot water storage tank, even if there is a power outage while in use, it is possible to supply hot water even if there is a power outage, and because it is a hot water storage type, there is no sudden temperature change compared to instantaneous type. It has an effect. In addition, by setting the hot water setting device to a time limit, it is possible to prepare the hot water in the water heater prior to opening the control valve. Sometimes inside the hot water tank or piping
This has the effect that hot water supply can be finished after the i-station is used up.

Effects of the Invention As described above, the water heater of the present invention has the following effects.

(1) Since the power to the water heater is turned on in conjunction with the setting of the hot water setting device, hot water at the set temperature can be supplied without fail when mixed hot water is supplied.

(2) Since the supply of mixed hot water is started and stopped by an electrically controlled control valve, it is possible to easily link the electrically controlled water heater and power on.

(3) Since power is cut off to the main parts when hot water is not being supplied, the life of the control circuit parts can be extended.

(Since the supplied water temperature is adjusted using the 41 mixing valve, the desired water temperature can be achieved more quickly than when using a hot water supply system.

(5) It is possible to share the power source for the water heater and the control valve.

[Brief explanation of drawings]

Fig. 1 is a configuration diagram showing a water heater in an embodiment of the present invention, Fig. 2 is a front view of a hot water setting device used in the same embodiment, and Fig. 3 is a front view of the auxiliary water heater installation device. FIG. 4 is a conceptual diagram of the control circuit of the same embodiment, and FIG. 5 is a configuration diagram showing a conventional water heater. 16...Water heater, 23...Mixing valve (hot water mixing valve) 27.27'...Control valve, 36...
...Controller, 38...Setting device (hot water setting device), 3
9...Remote control setting device (setting device). Name of agent: Patent attorney Toshio Nakao and 1 other person No. 4
Figure I L+-”
Figure 5 O

Claims (6)

[Claims] (1) A water heater whose operation is electrically controlled, a hot water mixing valve that mixes the hot water sent from the water heater with water, a control valve that electrically supplies and stops the mixed hot water, and a hot water mixing valve that mixes the hot water sent from the water heater with water; A hot water supply device comprising: a hot water setting device for setting supply and stop; and a controller for turning on the water heater and controlling opening of the control valve in conjunction with the settings of the hot water setting device. (2) The hot water supply device according to claim 1, wherein the electrically controlled hot water mixing valve is controlled in accordance with the mixed hot water supply setting. (3) The hot water supply device according to claim 2, wherein the hot water temperature of the water heater is set high in conjunction with the mixed hot water temperature set by the hot water mixing valve. (4) The water heater according to claim 1, wherein the water heater is an instantaneous type, and the power is turned on according to the settings of a hot water setting device, and the operation is started and stopped by detecting the flow rate. (5) The water heater according to claim 1, wherein the water heater has a hot water storage tank and controls the amount of heating by detecting the temperature inside the tank with a temperature detector. (6) The hot water supply device according to claim 1, wherein the hot water setting device is configured to set a time limit.