JP2583865B2 - 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 objects having different use temperature ranges.

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 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 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 are feedback-controlled by 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) In order to raise the temperature of hot water in the bathtub 13, after hot water is added, even if the temperature is returned to a low temperature by the controller 10, for example, 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, in addition to the bathtub 13, there is a hot water supply target having a different use temperature range from the bathtub 13, such as a washing place or a shower. However, since the faucet 12 and the constant temperature hot water supply device 5 correspond one-to-one,
In order to handle a plurality of hot water supply targets, the same number of constant temperature hot water supply devices were required.

(3) Controller 10 for setting hot water temperature, flow rate adjustment,
The faucet 12 for stopping water is separate, unavoidable,
When a faucet is branched and provided corresponding to a plurality of hot water supply objects, and one constant temperature hot water supply device 5 is used, if the faucet is opened by ignoring the hot water setting of the controller 10, particularly for a faucet that does not require hot water. Even hot water was dangerous. In addition, if hot water is not used and another hot water is opened after using hot water with another faucet, the hot water remaining in the mixing conduit 8 is also supplied, which is dangerous. The present invention has been made to solve such a conventional problem, and has as its object to provide a safe and easy-to-use water heater.

Means for Solving the Problems In order to solve the above problems, the hot water supply apparatus of the present invention comprises a temperature control means for adjusting the hot water supply temperature and hot water having a different temperature range adjusted by the temperature control means. A plurality of hot water outlets to be supplied to the hot water supply object, a switching valve for switching the plurality of hot water outlets, an operation unit for selecting a number of independently provided hot water outlets corresponding to the plurality of hot water outlets, A temperature setting section for changing the hot water supply temperature, and a switching valve for switching the hot water supply port side of the operation section to the operated hot water supply port side, and adjusting the temperature control means to specify a predetermined temperature range in a different temperature range for each hot water supply port. The hot water supply temperature is also switched to the temperature of, and when the temperature setting unit is operated, the controller is provided with a controller that changes the hot water supply temperature by adjusting the temperature control means within a different temperature range defined for each hot water supply port. is there.

With the above-described configuration, the hot water supply apparatus of the present invention can prevent the danger of supplying hot water to a hot water supply object that does not want to generate high temperature by using a plurality of hot water supply ports that supply hot water having different temperature ranges to the hot water supply object, The switching valve is switched to the operated hot water side of the unit, the temperature adjusting means is adjusted to switch the hot water temperature to a predetermined temperature in a different temperature range determined for each hot water outlet, and the temperature setting unit is operated. When operated, the temperature control means is adjusted within a different temperature range determined for each hot water supply port to change the hot water supply temperature, thereby preventing erroneous operation and further improving operability and safety. Things.

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 driven by a motor.
24, a flow rate sensor 25, and a switching valve 27 through a pressurizing pump 26. The switching valve 27 is also of a type driven by a motor,
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 which require hot water in a temperature range from normal water to about 45 ° C. In addition, of course, the hot water supply port B29 is around 42 ° C from water,
It is connected via a path B35 to a discharge port 34 of a bathtub 33 requiring hot water. In case of hot water inlet A28, mixing valve 2
A mechanical temperature safety valve 37 having a temperature-sensitive element is provided to prevent hot water from being supplied to the shower 30 or the cull 31 when the control valve 3 or 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. Then, 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. It is a switching / water stopping / flow control valve. The temperature safety valve 37 provided in the hot water supply port A28 is connected to the temperature (46) at which the wax thermo 51, which is a temperature sensing element, is set.
C.) or higher, the valve body 52 is extended to close the flow path.

FIG. 4 shows the details of the setting unit 38. shower
Instructs hot water supply to 30 and 31
Callan and shower switch 53 arranged on 38, hot water supply to the bathtub is instructed correspondingly Bathtub switch 54 arranged on setter 38, multiple switch 55 to increase the flow rate, small switch 56 to decrease the flow, and others Call switch for calling
57 are provided facing the front. When the curan, shower switch 53 or bathtub switch 54 is pressed, the hot water supply port is switched to the pressed side, and the temperature and flow rate of the mixed hot water provided in the controller 36 in advance corresponding to these switches are set.
Hot water supply is started at a predetermined value as a specific hot water temperature in two volumes (not shown). Then, the hot water filling volume 58 provided at the place covered by the lid of the setting device 38
The hot water supply stops automatically when the value set in is reached. 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 confirmation switch, which is a remote control setting device 39 described later.
For receiving signals. The setting unit 38 also has a display
62 and an alarm buzzer 63 are provided.

In addition, the range in which the temperature can be changed by the high switch 59 is from water to 45 ° C when the shower switch 53 is pressed, and from water to 50 ° C hot water of 45 ° C or more when the bathtub switch 54 is pressed. It can be changed throughout.

 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 check switch 61 is pressed, and when hot water is not supplied 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. At the time of such remote control hot water supply, timer hot water supply, and tele-con hot water supply, the hot water supply temperature automatically switches 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 set switch 38 is pressed and the shower switch 53 is pressed, the switching valve 27 opens the hot water supply port A28 side where the hot water temperature ranges from water to 45 ° C., and the hot water is started at the temperature and the flow rate set in advance by the controller 36. You. The hot water supply temperature 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 a preset flow rate and a flow rate sensor
The flow rates detected at 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, at the time of participation by the callan and the shower switch 53, even if the high switch 59 is operated, a temperature of 45 ° C. or more cannot be set in a control manner.

If you want to change the preset flow rate,
Operate the 55 or small switch 56. 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 the hot water supply temperature range to the hot water supply port B29 side from hot water to hot water, and hot water is supplied at a temperature and a flow rate set in advance by the controller 36. The callan of the controller 36, the volume for presetting the temperature corresponding to the shower switch 53, and the volume for presetting the temperature corresponding to the bathtub switch 54 can also be selected within the hot water temperature range of the hot water inlet A28 and the hot water inlet B29. Has become.

In the case of hot water supply to the bathtub 33, the hot water supply is automatically stopped when the set value of the hot water volume 58 is reached. Callan,
In order to prevent forgetting to stop when operating the shower switch 53,
The hot water supply is stopped when the set value of the hot water filling volume 58 is continuously used. These quantitative water stoppages are performed by integrating the signals of the flow rate sensors 25. Bathtub when taking a bath
In the case of adding hot water for the purpose of raising the temperature of the hot water of 33, first press the bathtub switch 54 and then operate the high switch 59 to raise the set temperature to the hot water. The switching valve 27 opens the hot water supply port B29 side, and the mixing valve 23 opens the hot water side fully to supply 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 so as to have a predetermined hot water temperature and switches. The valve 27 is switched to the hot water supply port A28 side, and hot water is supplied at a predetermined temperature and flow rate of 45 ° C. or less. Therefore, even after the bathtub 33 is filled with hot water, the hot water remaining in the path B35 is not supplied to the curan 31 and the shower 30 and the operation is safe. Also,
Since the hot water supply temperature range is automatically changed in conjunction with the switching between the hot water supply port A28 and the hot water supply port B29, the safety is further enhanced. Further, since the hot water supply target is selectively selected by the switching valve 27, the hot water is not supplied from the curan 31 and the shower 30 when the hot water is supplied to the bathtub 33. If the mixing valve 23, the switching valve 27, or the controller 36 fails, hot water of 46 ° C. or more is to be supplied from the hot water supply port 28, the temperature safety valve 37 is immediately activated to supply hot water. To prevent that.

In this mixing unit 19, the route A32 and the route B
As shown in the figure, one hot water supply fitting 75 can be used. In this case, the route A32 and the route B35 are merged and connected immediately before the hot water supply fitting 75. In the case of this single location, hot water can be safely supplied by a simple operation as in the case of multiple locations.

As an effect of the present embodiment, the hot water supply port is switched according to the operation of the operating unit, such as the curan, the shower switch 53, or the bathtub switch 54, and the temperature range controlled by the mixing valve 23, which is the temperature control unit, also changes. Therefore, there is an effect that the hot water is not supplied to a hot water supply object that does not particularly require a high temperature and is safe. In addition, since hot water can be supplied at a preset hot water temperature in accordance with the operation of the curan, the shower switch 53, or the bathtub switch 54, the temperature used well can be obtained immediately, and there is an effect that the operation is small and convenient. .

In addition, since the switching valve 23 has a water stopping function, there is no need to provide a separate water stopping valve, and the configuration is simplified. Furthermore, since the callan, the shower switch 53 and the bathtub switch 54 are arranged on the setting device 38 corresponding to the arrangement of the callan 31, the shower 30 and the bathtub 33, it is easy to see which switch should be operated at a glance, and it is convenient to use. This has the effect. In the above embodiment, the mixing valve is used as the temperature adjusting means. However, an instantaneous water heater with a gas proportional valve for controlling the temperature with a water heater 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) By connecting the hot water supply port of the lower temperature range to the hot water supply target that does not want to generate high temperature, it is possible to prevent hot water from being supplied to dangerous hot water supply objects when this high temperature is generated, and to ensure safety it can.

(2) The switching valve is switched to the hot water supply port operated by the operation unit, and the hot water supply temperature is also switched to a predetermined specific temperature within a different temperature range determined for each hot water supply port by adjusting the temperature control means. When the temperature setting unit is operated, by adjusting the temperature adjusting means within a different temperature range defined for each hot water supply port to change the hot water temperature, prevention of erroneous operation,
Different operability and safety can be improved.

(3) Since there are a plurality of independent operation units corresponding to the plurality of hot water outlets, the operation is easy without mistakenly setting the hot water outlet or the hot water supply target, and the temperature adjusting means is also controlled. Therefore, it is easier to use and safer.

(4) By connecting a plurality of routes to a plurality of hot water supply openings and merging the routes immediately before one hot water supply fitting, it can be used for one supply target while maintaining safety. Also in this case, since there are a plurality of operation units, safety can be ensured by properly using the operation units according to a desired temperature range.

[Brief description of the drawings]

FIG. 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 partially cutaway sectional view showing a mixing valve block of the device, and FIG. Fig. 4, Fig. 4 is a front view of the setting device, Fig. 5 is a front view of the remote control setting device, Fig. 6 is a control block diagram of the device, and Fig. 7 is another hot water supply system to which the device is applied. FIG. 8 is a diagram of 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 A, 29 ... Hot water supply B, 36 ... Controller, 38 ... Setting device, 53 ... Callan, shower switch (operation unit), 54 ...
... bathtub switch (operation unit), 59 ... high switch (temperature setting unit), 60 ... low switch (temperature setting unit).

Claims (3)

(57) [Claims] 1. A temperature control means for adjusting a hot water supply temperature, a plurality of hot water supply ports for supplying hot water having different temperature ranges adjusted by the temperature control means to a hot water supply target, and a switching valve for switching the plurality of hot water supply ports. An operation unit for selecting the number of independently provided hot water outlets corresponding to the plurality of hot water outlets; a temperature setting unit for changing a hot water temperature from the temperature control means; and a hot water supply operated by the operation unit While switching the switching valve to the mouth side, adjusting the temperature control means also switches the hot water supply temperature to a predetermined specific temperature in a different temperature range defined for each hot water supply port, and the temperature setting unit operates. A hot water supply device having a controller for changing the hot water supply temperature by adjusting the temperature control means within a different temperature range defined for each of the hot water supply ports. 2. The hot water supply device according to claim 1, wherein the switching valve has a water stopping function. 3. The hot water supply apparatus according to claim 1, wherein the operation unit is arranged corresponding to an arrangement of a hot water supply target.