JP2583863B2 - Water heater - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hot water supply apparatus for adjusting hot water supply temperature and supplying hot water to a plurality of hot water supply targets.

2. Description of the Related Art FIG. 8 shows a conventional hot water supply apparatus of this type. (For example, Japanese Utility Model Application Laid-Open No. 61-18424) In FIG.
The hot water supply pipe 3 and the water supply pipe 4 which have passed through are connected to the constant temperature hot water supply device 5. Inside the constant temperature hot water supply device 5, a hot water valve 6 of the hot water supply pipe 3 and a water quantity valve 7 of the hot water supply pipe are connected to adjust the mixing ratio. The mixing line 8 is provided with a thermistor 9 for detecting the temperature of the mixed hot water, and a controller for arbitrarily adjusting the signal of the thermistor 9 and the temperature of the mixed hot water.
The control device 11 controls the hot water quantity valve 6 and the water quantity valve 7 based on the signal 10. Mixing water is supplied to the faucet 12 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 the signal of the thermistor 9 is fed back to perform control.

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

(1) In order to raise the temperature of the hot water in the bathtub 13, after the hot water is added, even if the temperature is returned to a low temperature by the controller 10, the hot water remains in the mixing pipe 8, and the faucet 12 is opened again. Then hot water was supplied and it was dangerous.

(2) In the bathroom, besides the bathtub 13, there is a hot water supply object with a different operating temperature range from the bathtub 13, such as a washing place and a shower.
Since the faucet 12 and the constant-temperature hot-water supply device 5 have a one-to-one correspondence, the same number of constant-temperature hot-water supply devices are required to handle a plurality of hot-water supply targets.

(3) When a single constant-temperature hot-water supply device 5 is used to supply hot water to a plurality of hot-water supply objects, branching from the mixing conduit 8 and providing faucets at a plurality of locations allows other faucets to be supplied while hot water is supplied to the bathtub 13. When it was opened, hot water was supplied to it and it was dangerous.

An object of the present invention is to solve such a conventional problem, and an object of the present invention is to provide a hot water supply apparatus capable of safely supplying hot water to a plurality of hot water supplies.

Means for Solving the Problems In order to solve the above problems, the hot water supply apparatus of the present invention includes a temperature adjusting means for adjusting the hot water supply temperature, and hot water in different temperature ranges adjusted by the temperature adjusting means. A plurality of hot water inlets to be supplied to the object, a switching valve for switching between the plurality of hot water outlets, a hot water inlet setting section for selecting the hot water inlet, a hot water temperature setting section for setting the hot water temperature of the temperature control means, Control the switching valve according to the setting of the mouth setting section to switch the hot water supply port,
Control to control the hot water temperature by adjusting the temperature control means to a different hot water temperature range determined for each hot water supply port, and to adjust the temperature control means according to the setting of the hot water temperature setting unit to change the hot water temperature within the hot water temperature range It is provided with a vessel.

Effect of the Invention With the configuration described above, the hot water outlet that is desired to be switched by the hot water outlet setting unit is set, the hot water outlet is switched by controlling the switching valve, and the temperature saving means is set within a different hot water temperature range determined for each hot water outlet. The hot water temperature is controlled by adjusting the hot water temperature, and when the setting is changed in the hot water temperature setting section, the hot water is used last time by controlling the temperature control means to change the hot water temperature within the hot water temperature range. This prevents danger from being caused by the supply of residual hot water at the time of re-hot water supply later.

An embodiment of the present invention will be described below with reference to the accompanying drawings.

In FIG. 1, hot water produced by a water heater 16 is supplied to a hot water path 17.
, And water is introduced into a mixing unit 19 which is a temperature adjusting means via a water-side path 18. And hot and cold water is a check valve
20,21, pressure balance valve 22 to balance hot water pressure and water pressure
Through the mixing valve 23. The mixing valve 23 is of an electrically controlled type driven by a motor, and the mixed hot water whose mixing ratio is adjusted reaches a switching valve 27 via a thermistor 24, a flow sensor 25, and a pressurizing pump 26. The switching valve 27 is also of an electrically controlled type driven by a motor, and the switching valve 27 switches between the hot water supply port A28 and the hot water supply port B29. The hot water supply port A28 is connected via a path A32 to a shower 30 and a curan 31 in a washing place that requires hot water in a temperature range from normal water to about 45 ° C. Further, the hot water supply port B29 is connected to a discharge port 34 of a bathtub 33 that requires not only about 42 ° C. but also hot water from water via a path B35. In case of hot water outlet A28, mixing valve 23
A mechanical temperature safety valve 37 having a temperature sensing element is provided to prevent hot water from being supplied to the shower 30 and the currant 31 when the switching valve 27 fails or the control circuit 36 fails. A setting device 38 is provided in the bathroom for switching the hot water supply destination and adjusting the temperature of the mixed hot water. For example, in a kitchen outside the bathroom, a remote control setting device 39 for relaying the start of hot water supply by remote control hot water supply, timer hot water supply, or telephone is provided.

FIG. 2 is a detailed view of a block around the mixing valve 23. The mixing valve 23 is of a type in which a hot water side valve body 40 and a water side valve body 41 are provided on a shaft 42 and driven by a motor 43 via a gear box 44.

FIG. 3 is a detailed view of the switching valve 27 block. Switching valve
27 is a valve element A47 whose both ends are regulated by a shaft 45 and urged by a spring 46
And the valve element B48 are driven by the motor 49 via the gear box 50. At the neutral point, hot water supply to hot water inlet A28 and hot water inlet B29 is stopped, hot water is supplied to hot water inlet A28 by being pushed to the left in the figure, and hot water is supplied to hot water inlet B29 by being pulled to the right. This constitutes a switching / water stoppage / flow control valve. Temperature safety valve 3 installed at hot water inlet A28
Numeral 7 is configured so that when the temperature of the wax thermo 51, which is a temperature sensing element, becomes equal to or higher than a set temperature (40 ° C.), the flow path is closed by the valve body 52.

FIG. 4 shows the details of the setting unit 38. shower
Curan for instructing hot water supply to 30 and Karan 31, shower switch 53, bathtub switch 54 for instructing hot water supply to bathtub, multiple switch 55 for increasing flow rate, small switch 56 for decreasing flow rate, and call switch 57 for calling others Is provided facing the front. When the curan, the shower switch 53 and the bathtub switch 54 are pressed, the hot water supply port is switched to the pressed side, and four volumes (set in advance in the controller 36 corresponding to these switches for setting the mixed hot water temperature and flow rate) Hot water supply is started at the value set in (not shown). Then, when the integrated flow rate value is set in advance by the hot water amount volume 58 provided at the place covered by the lid of the setting device 38, the hot water supply is automatically stopped. When it is desired to change the preset value of the flow rate, the multiple switch 55 or the small switch 56 is operated to change the value. If the user wants to change the preset mixed hot water temperature, the user operates the high switch 59 or the low switch 60 in the lid to adjust the temperature. Reference numeral 61 denotes a drainage tap confirming switch for receiving a signal from a remote control setting unit 39 described later. Setting device
The display 38 also has a display section 62 and a warning buzzer 63.

Note that the temperature range of the high switch 59 can be changed from water to 45 ° C when the shower switch 53 is pressed, and from 50 ° C to 45 ° C or higher when the bathtub switch 54 is pressed. Can be changed over the entire range.

 FIG. 5 shows the details of the remote control setting device 39.

When the remote control switch 64 is pressed, the above-mentioned drain plug confirmation switch 61 is pressed, and when hot water is not operated by operating the setting unit 38, hot water can be supplied by the remote control.

When the time set by the timer 66 having the clock display section 65 comes, the timer switch 67 is pressed and the timer hot water can be supplied under the same conditions as the remote control switch 64. Further, the remote controller setting device 39 is provided with an HA adapter, and when a hot water supply is instructed by the telephone 69, the hot water supply can be started under the same conditions as the remote control switch 64. During such remote control hot water supply, timer hot water supply, and tele-con hot water supply, the hot water supply temperature automatically switches the switching valve 27 to the hot water supply port 29 side according to the setting of the hot water supply temperature volume 70, and hot water is supplied to the bathtub 33. In addition, the remote controller 39 is provided with a buzzer 71 that sounds in conjunction with the call switch 57 and various display units.

FIG. 6 is a control block diagram. In response to the signals of the various switches and volumes described above, the mixing valve 23 feeds back the temperature of the mixed hot water with the thermistor 24 and controls the motor 43 via the adjusting unit 72. In addition, the switching valve 27 controls the motor 49 via the adjusting unit 73 by opening a designated hot water supply port according to an instruction from the caller, the shower switch 53, or the bathtub switch 54, and feeding back a signal from the flow rate sensor 25. .

The signal from the flow rate sensor 74 is further integrated by a flow rate integrating section 79, and is compared with the value of the filling volume 58 to perform fixed water stoppage.

Next, the operation of this embodiment will be described. When the caller and the shearer switch 53 of the setting device 38 are pressed, the switching valve 27 is turned on by the hot water supply port A28.
The side is opened, and hot water supply is started at a temperature and a flow rate set by the controller 36 in advance. As for the hot water supply temperature, the mixing ratio of hot water and water is adjusted by the mixing valve 23, and the set temperature and the temperature detected by the thermistor 24 are compared to obtain an appropriate temperature. The flow rate is adjusted by the switching valve 27, and the set flow rate and the flow rate detected by the flow rate sensor 25 are compared to obtain an appropriate amount. To change the preset hot water temperature, the high switch 59 or the low switch 60 is operated. However, when hot water is supplied by the shower switch 53, the control switch 45
Temperatures above ℃ cannot be set. When it is desired to change the preset flow rate, the multi-switch 55 or the small switch 56 is operated. If the user wants to stop hot water supply, the curan and shower switch 53 are pressed again, and the switching valve 27 closes the flow path. When the bathtub switch 54 is pressed, the switching valve 27 switches to the hot water supply port B29 side, and hot water is supplied at a temperature and a flow rate set in advance by the controller 36. In the case of hot water supply to the bathtub 33, the hot water supply is automatically stopped when the hot water filling volume 58 is reached. In order to prevent forgetting to stop the operation even when the curan and the shower switch 53 are operated, the hot water supply stops when the hot water filling volume 58 is used continuously until the set value. These quantitative water stoppages are performed by integrating the signals of the flow rate sensors 25. When adding hot water for the purpose of raising the temperature of hot water in the bathtub 33 at the time of bathing, the bathtub switch 54 is first pressed, and then the high switch 59 is operated to raise the set temperature to hot water. The switching valve 27 is opened on the hot water supply port B29 side, and the mixing valve 23 is fully opened with the hot water side supplied with hot water. In this state, when using the curan 31 or the shower 30 in the washing place, when the curan and the shower switch 53 are pressed, the mixing valve 22 immediately changes the mixing ratio to the predetermined mixing water temperature, and the switching valve 27.
Is switched to the hot water supply port 28 side, and hot water is supplied at a predetermined temperature and flow rate. For this reason, even after the hot water in the bathtub 33 is added, the hot water remaining in the route B35 is not supplied to the curan 31 and the shower 30, which is safe. Further, since the hot water supply target is selectively switched by the switching valve 27, the hot water to the bathtub 33 is not supplied from the curan 31 or the shower 30 at the same time, so that it is safe. By any chance,
When hot water of 46 ° C. or more is to be supplied from the hot water supply port 28 due to a failure of the mixing valve 23, the switching valve 27, or the controller 36, the temperature safety valve 37 is immediately activated to supply hot water. To prevent.

In addition, this mixing unit 19 can be used as described above for the route A32 and the route B for different hot water supply objects such as a bathtub 33, a curan 31 and a shower 30, and as shown in FIG. 'Can be used for one hot water supply fitting 75. In this case, the route A32 and the route B35 are merged and connected immediately before the hot water supply fitting 75. For this reason, Kallang,
According to the operation of the shower switch 53 and the bathtub switch 54,
Because hot water is supplied via route A32 or route B35,
The danger caused by the remaining hot water of the hot water sink can be prevented as compared with the case of using only one path as in the conventional example. Even if hot water is supplied by operating the shower and the switch 53 in the bathtub hot water, hot water of a safe temperature is immediately supplied.

As an effect of the present embodiment, first, since the temperature adjusting means uses the mixing valve 23 for mixing hot and cold water, the temperature setting of the setting device 38 is changed, and the preset mixed hot water accompanying the switching operation of the switching valve 27 is set. There is an effect that the change of the temperature can be changed faster than that performed by the combustion control of the water heater. Also, switching valve
27 has an effect of not requiring many valves because it has a flow control function and a water stop function in addition to the switching function.
The hot water is supplied from the bathtub 33 in the bathroom and
31 and shower 30, so the setting place is close to the setting device
38 has only one effect. Furthermore, since the mixing valve 23, the hot water supply port A28, the hot water supply port B29, and the switching valve 27 are integrally provided as a single unit as the mixing unit 19, they are handled in terms of handling, construction, maintenance, and heat retention for preventing freezing. It has the effect of being easy. In the present embodiment, a hot water mixing valve is used as the temperature adjusting means. However, a temperature control using a water heater, for example, a water heater with a gas proportional valve may be used.

Effects of the Invention As described above, according to the water heater of the present invention, the following effects can be obtained.

(1) When a desired hot water outlet is set in the hot water outlet setting section, the hot water outlet is switched by controlling the switching valve, and the hot water temperature is adjusted by adjusting the temperature control means to a different hot water temperature range determined for each hot water outlet. Since the control is performed, it is possible to prevent the danger of remaining hot water remaining in the path after using hot water being supplied.

(2) If the setting is changed in the hot water supply temperature setting section, control is performed to adjust the temperature control means to change the hot water supply temperature within the hot water supply temperature range.

(3) By connecting a plurality of routes to a plurality of hot water supply ports and merging the routes immediately before one hot water supply fitting, it can be used for one hot water supply object while maintaining safety.

[Brief description of the drawings]

1 is a diagram of a hot water supply system using a hot water supply device according to an embodiment of the present invention, FIG. 2 is a sectional view showing a mixing valve block of the device, FIG. 3 is a sectional view of the switching valve block, and FIG. FIG. 5 is a front view of the remote control setting device, FIG.
FIG. 6 is a control block diagram of the apparatus, FIG. 7 is another hot water supply system to which the apparatus is applied, and FIG. 8 is a hot water supply system using a conventional hot water supply apparatus. 23: Mixing valve (temperature control means), 27: Switching valve, 28:
Hot water supply ports A, 29 ... Hot water supply ports B, 36 ... Controller, 38 ... Setting devices (hot water supply port setting section, hot water temperature setting section).

Continuation of front page (72) Inventor Mitsuhiko Tokumoto 1006 Kadoma, Kadoma City Matsushita Electric Industrial Co., Ltd. (56) References JP-A-61-130683 (JP, A) JP-A-61-161349 (JP, A) )

Claims (5)

(57) [Claims] 1. A temperature adjusting means for adjusting a hot water supply temperature, a plurality of hot water supply ports for supplying hot water in different temperature ranges adjusted by the temperature adjusting means to a hot water supply object, and a switching valve for switching the plurality of hot water supply ports. A hot water supply port setting section for selecting the hot water port, a hot water temperature setting section for setting the hot water temperature of the temperature adjusting means, and controlling the switching valve according to the setting of the hot water port setting section to control the hot water port. Switching, controlling the hot water supply temperature by adjusting the temperature control means within a different hot water supply temperature range defined for each of the hot water supply ports, adjusting the temperature control means according to the setting of the hot water supply temperature setting unit to control the hot water supply temperature. A water heater with a controller that changes within the temperature range. 2. A hot water supply apparatus according to claim 1, wherein said temperature control means is a hot water mixing valve. 3. The hot water supply apparatus according to claim 1, wherein the switching valve has a flow rate adjusting function and a water stopping function. 4. The hot water supply apparatus according to claim 1, wherein the hot water supply objects to which the plurality of hot water supply ports are connected are, similarly to the bath tub in the bathroom, a cull and a shower in a bathroom washing place. 5. The hot water supply apparatus according to claim 1, wherein the temperature control means, the plurality of hot water supply ports, and the switching valve are integrated.