JP2822572B2 - Water heater - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a hot water supply device having a plurality of water outlets.

(Prior Art) FIG. 9 shows a shower apparatus having a large number of showers and water outlets. This shower device supplies hot water from a hot water supply source (not shown) to a hot water side of a hot water mixer tap (101) through a first hot water supply path (102), and the hot water mixer tap (101) supplies an arbitrary hot water. The hot water mixed with the temperature is sent to each water discharge solenoid valve (104) through a second hot water supply path (103) branched into two paths (103a) and (103b).

Each water spouting solenoid valve (104) are arranged in parallel form becomes a pair with the drain valve (105), both valve (104) various shower spout on the downstream side of (105) (S ₁₎ ~ (S _A third hot water supply path (106) communicating with ₅ ) is connected.

(112) provided in the second hot water supply channel (103) is a water stop valve, and one drainage channel (108) is branched from the downstream side of the valve (112). A drain valve (109) is provided on the way.

A circulation path (111) for returning hot water in the first hot water supply path (102) to the hot water supply source when necessary is provided in front of the hot water side check valve (110) of the hot and cold water mixing tap (101). .

By the way, as time elapses after using each shower, the temperature of hot water remaining in the first hot water supply path (102), the second hot water supply path (103), and the third hot water supply path (106) decreases. Therefore, a person who uses the shower after a while will first bathe in the cold water remaining in each of the hot water supply channels (106) (103) (102).

As described above, in order to prevent low-temperature water from being discharged at the beginning of use, the first, second, and third hot water supply paths (102) (10
3) Before using the cold water in (106), it is necessary to replace it with a new hot water supply. The above-described shower device switches the hot water supply in the first hot water supply path (102) by returning the hot water in the hot water supply path (102) to the hot water supply source through the circulation path (111) and circulating the same. For the hot water supply in the second and third hot water supply channels (103) and (106), the water stop valve (112) is closed to stop the hot water supply from the hot water mixer tap (101), and then each drain valve (105). By opening the valves (109) and (109), the remaining hot water in the entire system is returned through the second hot water supply channel (103), drained from one drainage channel (108) and replaced with new hot water.

The replacement of hot water using the circulation path (111) is referred to as a circulation method, and the drainage from the drainage path (108) is referred to as drainage water.

(Problems to be Solved by the Invention) However, the above-described first method by the circulation method of the shower device is used.
Changing the hot water supply in the hot water supply path (102) requires facilities of a circulation path (111) and a circulation mechanism (not shown), which leads to a complicated structure and an increase in construction and inspection costs.

In addition, during the use of each shower, for example, if time passes without using only a specific shower, the temperature of the hot water remaining in the third hot water supply path (106) connected to the shower water discharge port is reduced. Since water cannot be removed only in the third hot water supply passage (106) during use of the shower, the remaining low-temperature water in the third hot water supply passage is used as it is when the shower is used next time. Allow water to spout, or water stop valve (112) as described above
After closing the shower and stopping the use of the shower, remove the hot water from all the systems in the second and third hot water supply channels (103) and (106) from the drain valve (109), drain the water, and replace with new hot water. And the preparation time took a long time.

The present invention relates to a hot water supply device such as a shower device configured as described above, wherein a water structure and an operation in each of the first, second, and third hot water supply passages are made independent for each hot water supply passage. In addition to shortening the preparation time until water can be spouted at the appropriate temperature by rationally changing the water and hot water supply suitable for The purpose is to discharge hot water.

(Means for Solving the Problems) In order to solve the above-mentioned problems, the hot water supply apparatus of the present invention is connected to a first hot water supply path from a hot water supply source to a hot water mixing tap and a secondary side of the hot water mixing tap and is connected to one hot water mixing tap. Alternatively, a second hot water supply path to which a plurality of on-off valves are connected, a third hot water supply path from each of the on-off valves to a respective water discharge port, and a hot water supply tap in the first hot water supply path and a second hot water supply path A drain valve disposed at the downstream end and each third hot water supply channel, a drain channel connecting these drain valves to a drain port at the lower part of the apparatus, and hot water supply in the first hot water channel or the first and second hot water channels. A temperature detecting means for detecting a temperature, wherein when the hot water supply temperature in the first hot water supply path is lower than a predetermined temperature, the drain valve of the first hot water supply path is opened to bring the hot water supply in the same hot water supply path to a predetermined temperature. A first water control means for draining hot water from a hot water supply source through a drainage channel, and a temperature of hot water in the first hot water supply channel being predetermined. After being kept at a predetermined temperature, the drain valve of the second hot water supply path is opened for a predetermined time or until the hot water supply in the second hot water supply path reaches a predetermined temperature, and the hot water supply in the second hot water supply path is continued. A second water control means for causing hot water from the hot and cold water mixing tap to flow into the second hot water supply path; and stopping the water discharge from the water discharge port to open a drain valve of the third hot water supply path to stop the water supply. A hot water supply apparatus comprising: third water control means for draining hot water remaining in the third hot water supply path.

Further, the first drainage control means opens and closes a drain valve of the first hot water supply channel, flushes hot water from the hot water supply source through the drainage channel until the hot water in the hot water supply channel reaches a predetermined temperature, and If the hot water supply in the first hot water supply path does not reach the predetermined temperature within a predetermined time after executing the flushing, the water may be stopped.

(Operation) According to the above-described means, by providing a drain valve for all water in each of the first hot water supply path, the second hot water supply path, and each of the third hot water supply paths, Independently, each drain valve is individually controlled in opening and closing operation.

As the shower is used, the temperature of the hot water remaining in the first hot water supply passage and the second hot water supply passage gradually decreases. And
When the next use is started after the temperature of the hot water in the first and second hot water supply channels has decreased to a predetermined temperature or less, the hot water temperature detecting means in the first hot water supply channel outputs a signal from the first hot water supply channel. Hot water temperature detection information is obtained.

Also, when the hot water temperature detecting means is provided in the second hot water supply path,
Detection information of the temperature of the hot water in the second hot water supply path is obtained from the hot water temperature detecting means.

When it is detected that the temperature of the hot water in the first hot water supply path is equal to or lower than a predetermined value, the first water control means is executed, and the drain valve of the first hot water supply path is opened.

When the drain valve is opened, the low-temperature water in the first hot water supply channel flows into the drain channel immediately before the hot water mixer tap, and is drained from the drain port at the lower part of the device.

When the remaining hot water in the first hot water supply channel is drained from the drain valve,
Hot water over the entire length of the hot water supply path is replaced by new hot water supplied from the hot water supply source, and supplied to the hot / water mixer tap.

When the temperature of the hot water in the first hot water supply channel is maintained at or above a predetermined value, the drain valve of the first hot water supply channel is closed and the water is stopped.

When the hot water supply temperature in the first hot water supply path is maintained at the predetermined temperature as described above, the second water supply means is executed, and the drain valve of the second hot water supply path is turned on for a predetermined time, or the second hot water supply temperature becomes the predetermined temperature. Open until it reaches.

When the drain valve is opened, the low-temperature water in the second hot water supply channel flows into the drainage channel from the second hot water supply channel, and is drained from the drain port at the lower part of the device.

When the remaining hot water in the second hot water supply channel is drained from the drain valve,
The entire hot water supply in the second hot water supply path is replaced with the hot water supplied from the mixing tap and supplied to each open / close valve.

Each on-off valve operates independently, and the valve is repeatedly opened and closed each time water is discharged from the water outlet. When a certain on-off valve is opened, the appropriate temperature hot water in the second hot water supply passage passes through the third hot water supply passage and is discharged from the water outlet. When the used water outlet is stopped by closing the on-off valve, hot water remains in the third hot water supply path, but every time the on-off valve is closed, the drain valve corresponding to the used water outlet is opened. Then, the hot water in the third hot water supply channel is drained, and the hot water is drained from the drainage channel.

Thereby, after using each water outlet, the inside of the third hot water supply channel provided with the water outlet becomes empty every time, and when the open / close valve is opened next time, the appropriate temperature hot water supply in the second hot water supply passage is discharged as it is. You.

The first water control means in the hot water supply device of claim 2 is:
If the temperature of the hot water in the first hot water supply path is lower than the predetermined temperature, the drain valve of the first hot water supply path is opened and the hot water supply is switched until the hot water in the hot water supply path reaches the predetermined temperature, as described above. However, after a lapse of a predetermined time due to malfunction of the hot water supply source, etc.,
If the hot water supply temperature in the first hot water supply passage has not reached the predetermined temperature, the drain valve is opened to stop the water being discharged.

(Effects of the Invention) The hot water supply apparatus of the present invention has the following effects because it is as described above.

1. When the temperature of hot water remaining in the first hot water supply path from the hot water supply source to the hot water mixing tap is lower than a predetermined value, the low-temperature hot water is replaced with a new hot water by flushing through the drain valve immediately before the hot water mixing tap. Therefore, the structure becomes very simple as compared with the conventional circulation system.

In addition, it is possible to replace the hot water in the first hot water supply path with a new hot water supply immediately before the hot water mixing tap while draining the low-temperature hot water in the first hot water supply path without remaining. It can be performed reliably.

2. After the hot water supply temperature in the first hot water supply path is maintained at a predetermined temperature,
The drain valve of the second hot water supply path is opened, and low-temperature water in the second hot water supply path is supplied from the downstream end of the second hot water supply path for a predetermined time or in the second hot water supply path while new hot water is supplied from the hot water mixing tap. Since the hot water supply is configured to supply water until it reaches a predetermined temperature, the low-temperature hot water remaining in the second hot water supply path can be reliably removed in a short time following the securing of an appropriate temperature hot water supply in the first hot water supply path. By flushing the water and replacing it with a suitable temperature hot water in which low-temperature hot water is not mixed, the hot water can be supplied to each on-off valve.

3. A drain valve is provided in each third hot water supply channel, and the operation of these drain valves is separately controlled so that after the water is discharged, the third hot water supply channel is flushed. Each third
There is no need to drain the low-temperature hot water in the hot water supply passage through the second hot water supply passage. Therefore, the third hot water supply passage is completed by successively rinsing the water from the water discharge outlet where the water discharge is stopped while continuing to use each water discharge outlet. The interior can be emptied for the next use.

4. After the start-up of the device according to 1.2.3 above, the exchange of the hot water and hot water in each of the first and second hot water supply channels is completed, and the preparation for use is completed promptly. Then, in any case, Hot water supply at an appropriate temperature can be immediately discharged from each water discharge.

5. Since the low-temperature water in the second hot water supply channel is flushed from the downstream end of the second hot water supply channel while supplying new hot water from the hot and cold water mixing tap, an appropriate temperature hot water supply is secured in the second hot water supply channel. There is an advantage that the control of the soot water can be easily performed by temperature control or time control. In particular, if the all-water control by time management is performed, the hot water temperature detecting means of the second hot water supply path becomes unnecessary, and the structure and operation control can be simplified accordingly.

6. In the water discharge device of claim 2, if the hot water supply temperature in the first hot water supply channel does not reach the predetermined temperature even if the hot water supply in the first hot water supply channel has been performed for a predetermined time or more, the all water is discharged. Since the operation is stopped, the first operation is performed due to, for example, a malfunction of the hot water supply source.
In a situation in which the hot water supplied to the hot water supply path does not reach the predetermined temperature, it is possible to prevent an operation failure in which all the water is continuously supplied from the drain valve.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

FIG. 2 shows a shower device (A) of this embodiment, in which various types of showers (a ₁ ) to (a ₆ ) are provided on both sides of the panelized tower body (A ′) and on the upper and lower portions, respectively. is controlled by the operation control unit to the input means of these the water discharge of each shower tower body (a ') the front of the operation panel (a ₇₎ (50) (Figure 4).

FIG. 1 is a simplified diagram showing a piping system for hot water supply and sewage water of the shower device (A), and shows a section from a hot water supply source (1) to a hot water mixer tap (3) of the shower device (A). The first
They are communicated by the hot water supply channel (2). A second hot water supply path (7), which branches into two systems, is connected to the secondary side of the hot / water mixer tap (3), and six and five water discharge ports are respectively connected to both branch paths (7a) and (7b). Opening / closing valve, solenoid valve (8a) in this embodiment
(8b) are connected in parallel. Then, these solenoid valves (8a) third hot water passage are respectively connected to the secondary side of (8b) (9a) (9b ) each shower spout _{(a 1 -1) ~ (a} 6 -
Contact 2). In FIG. 3, the actual piping system is partially omitted.

Now will be described the shower _{(a 1) ~ (a 6} ), the first figure to Figure 3 _{(a 1 -1) (a 1} -2) (a 1 -
Reference numeral 3) denotes a spray outlet, a massage outlet, and a soft (foam end) outlet of an overhead shower (a ₁ ) installed above the tower (A ′). Actually, three outlets are provided. The water outlet is configured to be incorporated in _one overhead shower (a ₁ ) as shown in FIG. 2 and FIG.

(A ₂ ) is a micro shower water discharge port disposed on both sides of the overhead shower (a ₁ ), and discharges shower water in a mist state.

Tower body (A ') provided above the two sides (a ₃ -1) (a ₃
-2) is a spout port for pouring hot water (a ₃ ), in which shower water is discharged upward and falls in a ball-like shape onto a shoulder or the like of a user in a waterfall shape. To use.

_{(A 4 -1) (a 4} -2) is a spout body shower (a _4), 2 types of spray spout (a ₄ -1) and intermittent (massage) spout (a ₄ -2) Are arranged at upper and lower positions on both sides of the tower body (A ') as a set of two water outlets, and are directed to a user standing in front of the tower body (A').

Tower body (A ') is provided on the base-like portion of the lower _{(a 6 -1) (a 6} -
2) is an under shower (a ₆ ) water outlet, which massages the soles of the feet with shower water discharged upward.

The hand shower (a ₅ ) which is detachably installed on the side of the tower (A ′) is used for shampooing the hair.

On the other hand, the configuration of the hot water supply source (1) depends on the specifications.
There is a case where hot water is supplied directly from a) or a case where hot water is supplied from the hot water heater (1a) after storing it in the hot water tank (1b). In the case of this embodiment, the latter is used. Yes,
Hot water heated by the water heater (1a) is stored in the hot water tank (1b), and the pressure is increased via the pressurizing pump (15). To be supplied.

The hot and cold water mixing tap (3) uses a manual thermostatic mixing valve, connects the first hot water supply path (2) to the hot water inlet of the mixing tap (3), and supplies a water supply tank (25).
The water supply channel (10) is connected to the water supply port of the mixer tap (3). Further, the upstream side of the hot water mixer tap (3) in the first hot water supply path (2) and the water supply path (10) Stopcocks (1
6), strainer (17) and check valve (18) are provided in order.

The hot water mixed at a desired temperature by the hot water mixing tap (3) is supplied into the branches (7a) and (7b) of the second hot water supply path (7), and each of the solenoid valves (8a) and (8b) is the third hot water passage when it is open (9a) (9b) via a respective shower spout (a ₁ -1) ~
Spouted from (a ₆ -2).

In the shower apparatus (A) of the present embodiment, the first hot water supply path (2) and the second hot water supply path (7) are each independently provided with a drainage structure by a flow system, and the third hot water supply path ( 9a)
(9b) is provided with a drainage type water structure.

First, a drain valve (4) for all water is connected immediately before the hot water mixing tap (3) in the first hot water supply path (2).

The drain valve (4) is controlled to open and close by an operation control unit (50) described later. A drainage channel (5) is connected to the secondary side of the drainage valve (4), and this is connected to a drainage port (6) arranged at the lower part of the device (A).

Further, a temperature thermistor (19) is provided immediately upstream of the drain valve (4) of the first hot water supply path (2) and communicates with an operation control unit (50) for controlling the opening and closing operation of the drain valve (4). Yes,
The temperature of the hot water in the first hot water supply path (2) is measured by the temperature thermistor (19), and the measured information is sent to the operation control section (50).

The hot water supplied from the first hot water supply channel (2) to the hot / water mixer tap (3) is mixed with water supplied from the water supply channel (10) to an arbitrary temperature desired by the user through the mixer tap (3). And flows into the second hot water supply path (7).

The second hot water supply path (7) is branched into a plurality of paths, for example, two branch paths (7a) and (7b), and both branch paths (7a) and (7b).
Includes water flow sensors (14a) (14b) for measuring the flow rate of hot water passing through the branch passages (7a) (7b), flow control valves (13a) (13b) for controlling the flow amount, and a branch passage ( 7a) (7b)
Temperature thermistors (22a) and (22b) for measuring the temperature of the hot water inside are installed in order from the upstream side.

On one branch passage (7a) 3 single shower spout overhead showers with the _{(a 1) (a 1 -1} ) (a 1 -
2) (a ₁ -3), struck was hot water outlet _{(a 3 -1) (a 3} -
2), six diaphragm-type solenoid valves (8a) for opening and closing the hand shower (a ₅ ) are connected, and the other branch (7b) is connected to the micro shower outlet (a _2). ), under-shower spout _{(a 6 -1) (a 6} -
2), the body shower water outlet _{(a 4 -1) (a 4} -2) 5 pieces of diaphragm type electromagnetic as for (8b) is is connected.

Thus, each of the showers (a ₁ ) to (a ₆ ) is connected to the branch (7a) side of the second hot water supply path (7) (a ₁ ) (a ₃ ).
(A ₅ ) and contact the branch road (7b) side (a ₂ ) (a ₄ )
(A ₆ ), for example, by opening the desired solenoid valves (8a) and (8b) one by one, the overhead shower (a ₁ ) and the body shower (a ₄ )
Like hand shower (a ₅ ) and body shower (a ₄ )
Showers communicating with different branches (7a) and (7b) are simultaneously spouted. Further, the flow rate of the hot water supplied to both branch paths (7a) and (7b) is controlled by automatic control of the flow control valves (13a) and (13b), and the showers are opened in the respective branch paths (7a) and (7b). corresponding to the type of the spout _{(a 1 -1) ~ (a} 6 -2) is adjusted to the optimum flow rate.

Further, drainage valves (20a) and (20b) for soot water are provided at the downstream ends of the branch passages (7a) and (7b) of the second hot water supply passage (7). (20a) and (20b) -2
The second drainage channels (21a) and (21b) connected to the next side are respectively connected to the aforementioned drainage channel (5).

Further, the solenoid valves (8a) (8b) and each of the shower spout _{(a 1 -1) ~ (a} 6 -2) and the third hot water passage to contact (9a)
Immediately downstream of the solenoid valves (8a) and (8b) in (9b), drainage valves for soot water (11a) and (11b) each comprising, for example, a solenoid valve or the like.
A third drainage channel (12a) (12b) is connected to the secondary side of these drainage valves (11a) (11b), and each is assembled one by one. ) (11d) is connected to the second drainage channels (21a) (21b).

The common drainage valves (11c) and (11d) are valves for preventing backflow, and are opened following the drainage valves (11a) and (11b), and the collected drainage is discharged to the second drainage channels (21a) (21b). ).

In FIG. 1, some drain valves (11a) (11b) are not located immediately downstream of the solenoid valves (8a) (8b) for the sake of simplicity. As shown in the figure, a diaphragm type solenoid valve (8a) and a drain valve (11a) composed of a direct acting type solenoid valve, and a similar solenoid valve (8b) and drain valve (11
b) are integrally formed to form a unit, and the units are connected in a horizontal line.

Each solenoid valve (8a) (8b) and flow control valve (13a) (13b),
And the first, second and third hot water supply channels (2), (7), (9a),
Drain valves (4), (20)
a) (20b), (11a ) (11b) is in electrical communication with the as described above tower body (A ') center of the operation panel (operation control unit for performing an input operation from a ₇₎ (50), this Under the control of the operation control unit (50), the rinsing water of the first, second, and third hot water supply channels (2), (7), (9a), (9b) and the shower water outlets (a _1- is performed spouting from _{1) ~ (a 6 -2)} .

FIG. 4 shows the operation control unit (50) and the solenoid valves (8a) (8b),
Drain valves (4), (20a) (20b), (11a) (11
FIG. 4B is a block diagram showing connection with temperature thermistors (19), (22a), (22b) and the like.

The operation control unit (50) roughly includes a central processing unit (51) including an instruction reading / decoding circuit (51a), an operation / execution circuit (51b), and timer counter means (57), and a storage circuit unit. It is informed via the data bus (54). The storage circuit section includes a program storage circuit (52) for storing a basic control program of the shower device (A) of the present embodiment, and a data storage circuit (53) for writing and reading data. A first water control means (58), a second water control means (59), and a third water control means (60), which will be described later, are resident in a part thereof.

An input port (56) and an output port (55) are connected to the data bus (54), and the input port (56) has an operation panel (50) for performing operations such as water discharge, water stoppage and flow rate adjustment of each shower. a ₇ ) and the detection signal converter (62) are connected,
An operation signal converter (61) is connected to the output port (55).

The detection signal converter (62) includes a temperature thermistor (19) for the first hot water supply path (2) and temperature thermistors (22a) (22b) for both branch paths (7a) (7b) of the second hot water supply path (7). ) And water flow sensors (14) installed on both branches (7a) and (7b).
a) (14b) is connected, and the detection signal of the flow rate of the hot water temperature obtained as an analog value from these is converted into a digital value by the converter (62), and the converted value is input to the input port (56) of the operation control unit (50). Sent to.

When a detection signal of hot water temperature or flow rate is input to the input port (56), the central processing unit (51) uses the basic program and the first, second, and third water channels based on the detection signal data. Reading / Decoding / Decoding based on control means (58) (59) (60)
The operation is repeatedly executed, and as a result, an operation signal is output to the output port (55) when necessary. Output port (5
The operation signal output as a digital value in 5) is converted into an analog value by the operation signal converter (61), and further amplified, and then, each predetermined solenoid valve (8a) communicating with the converter (61).
(8b).

The operation signal converter (61) includes a drain valve (4) for the first hot water supply path, a drain valve (20a) (20b) for both branch paths (7a) and (7b) of the second hot water supply path (7), and a common drain. Valves (11c) (11d), flow control valves (13a) (13b), six solenoid valves (8a) on the side of the branch (7a) and five drain valves (11a) for sewage water, branch ( 7b)
5 solenoid valves (8b) and 3 drainage valves (11
b) are connected to each other.

FIG. 5 shows a panel surface (a ₇ ′) of the operation panel (a ₇ ). A picture (60) of a schematic of the shower device is written on the right side of the panel, and the center of the panel surface (a ₇ ′) is shown. part a are arranged each shower spout _{(a 1 -1) ~ (a} 6 -2) operation switch corresponding to the water discharge from _{(b 1 -1) ~ (b} 6 -3). Further, (61a) and (61b) are water discharge amount adjustment buttons, and by pressing the + and-buttons (61a) and (61b), the water discharge amount per minute of the shower used is adjusted,
The water discharge amount is displayed as a number on the display units (62a) (62b). (63) on the left side of the panel is a power switch,
(64) is a stop switch used extremely.

In showering, power of the operation panel (a ₇₎ (6
When 3) is turned on, the operation control unit (50) is activated, and each of the temperature thermistors (19) (22a) (22b) and the water amount sensors (14a) (14b) are turned on by the hot water temperature in each hot water supply path. And start detecting the flow rate.

On the other hand, the temperature of the hot water remaining in the first and second hot water supply channels (2) and (7) gradually decreases with the lapse of time since the last use of the shower.

The first water control means (58) of the operation control unit (50) is configured to control the hot water supply temperature in the first hot water supply passage (2) to a predetermined temperature or less, for example, 47 ° C. ±
When the temperature is not higher than 3 ° C., the drain valve (4) is opened, and new water from the hot water supply source (1) is supplied until the hot water in the first hot water supply path (2) is within the range of 47 ° C. ± 3 ° C. It has a control function of making hot water supplied from the drainage channel (5).

Therefore, as shown in the time chart of FIG. 6, when the power switch (63) is turned on, the first hot water supply path (2)
If the temperature detected by the temperature thermistor (19) is not higher than 47 ° C. ± 3 ° C., the first water control means (58) of the operation control unit (50) is executed to open the drain valve (4). An operation signal is output. When the drain valve (4) is opened, the low-temperature water in the first hot water supply channel (2) is rinsed immediately before the hot water inlet of the hot water mixer tap (3), and drained through the drain channel (5). Drain to the outside through the mouth (6).

When the cold water is pushed out by the new hot water supply and water is supplied, and the inside of the first hot water supply path (2) is replaced with new hot water supply sent from the hot water supply tank (1b), the first hot water supply path (2). When the temperature of the hot water in the inside rises to the above-mentioned predetermined temperature range and the operation control unit (50) knows this from the detection signal from the temperature thermistor (19), the first water control means (5)
8) Outputs an operation signal to close the drain valve (4), thereby terminating the water.

As described above, the drainage valve (4) immediately before the hot / water mixer tap (3) opens the low-temperature hot water remaining in the first hot water supply path (2) with the rinse water in the first hot water supply path (2). Since it is replaced with a new hot water supply from the hot water supply source (1), as compared with the conventional hot water supply system, the structure without the circulation mechanism is greatly simplified, and the hot water mixing tap (3) Immediately before, hot water at a predetermined temperature is replaced in a short time, so that low-temperature water can be reliably prevented from being mixed.

In addition, the first water control means (58) has a water heater (1).
In order to prepare for the malfunction of a), a means for stopping water may be added. This is because when the flush water in the first hot water supply path (2) is supplied as described above, the hot water supply in the first hot water supply path (2) is stopped at a predetermined time due to a malfunction of the water heater (1a). When the temperature has not been reached, the drain valve (4) is closed to stop all the water. For example, drain valve (4)
If the hot water supply in the hot water supply path (2) does not rise to 47 ° ± 3 ° C. when the valve opening time, ie, the total water time reaches 3 minutes, malfunction of the water heater (1a) may occur. At that time, the first water control means (5
8 ') Stop water (Fig. 6 poor preparation).

Therefore, according to the provision of the above-mentioned first drainage water control means (58 '), the first water control means (58a) has a problem in that the first water control means (58a) has a malfunction due to a malfunction of the water heater (1a).
In a situation where hot water is supplied from the hot water supply channel (2) at a low temperature or in the state of water, there is an operational defect that the drain water (4) of the first hot water supply channel (2) drains all the time. Can be prevented.

As described above, when the water in the first hot water supply path (2) ends as expected and the hot water supply in the hot water supply path (2) is maintained at a predetermined temperature, the operation control unit (50) 2) The second water control means (59) is executed.

The second water control means (59) sets the drainage valves (20a) (20b) of the second hot water supply path (7) to a predetermined temperature after the hot water supply temperature in the first hot water supply path (2) is maintained at a predetermined temperature. Time or same route (2)
The drain valve (20a) (20
b) is provided with a control function to open the valve and perform the flushing.

Thus, in the second drainage control means (59) of this embodiment, the two branch paths (7a) (7) are simultaneously closed with the drain valve (4).
An operation signal for opening the two drain valves (20a) and (20b) of the b) for a predetermined time, for example, 5 seconds, is output to the two second drain passages (21a).
(21b) Water can be removed from both branches (7a) (7
b) Replace the hot water in (b) with new hot water from the hot and cold water mixing tap (3).

The opening time of the drain valves (20a) and (20b) is set to a time necessary and sufficient to replace the remaining hot water in both branch paths (7a) and (7b) of the second hot water supply path (7) with new hot water. It is determined by experimental measurement in advance, and is set to 5 seconds as described above in this embodiment.

The hot water supply in the second hot water supply path (7) is replaced by the branch path (7) detected by the temperature thermistors (22a) (22b).
a) Using the hot water temperature in (7b) as the control standard, the same route (7a)
It may be carried out by continuing to supply water until the temperature of the hot water in (7b) falls within the above-mentioned predetermined temperature range (for example, 33 ° C. ± 3 ° C.).

As described above, the rinsing water in the second hot water supply path (7) is supplied with new hot water from the hot and cold water mixing tap (3), and at the same time, the drain valves (20a) (20a) ( Since it is performed by draining water from 20b), there is an advantage that control of water operation can be performed relatively easily even by time management or temperature management.

For example, the piping conditions of both branch roads (7a) (7b) are fixed,
The remaining hot water in both branches (7a) and (7b) can be heated to a proper temperature by controlling the soaking water of the low-temperature hot water remaining in the branches (7a) and (7b) for a certain period of time by controlling only time management. It is possible to replace the hot water supply.

According to this, the temperature thermistors (22a) and (22) become unnecessary, and the structure and the operation control unit can be simplified accordingly.

Further, by partially changing the second drain water control means (59), the drain water in the second hot water supply path (7) is supplied to the two branch paths (7).
a) It is also possible to separately execute each (7b). For example, when only the hot water supply in the branch passage (7a) is in a low temperature state below a predetermined level, only the drain valve (20a) is opened alone. One branch road (7b) while flushing water in the branch road (7a)
It is also possible to perform spouting from the showers (a ₂ ), (a ₄ ), and (a ₁ ) that contact the user.

First, second double hot water passage (2) (7) of stearyl water flashes during operation panel (a ₇₎ Preparing lamp (65) on being performed, usable lamp when this is finished (66) is lit.

The operation control of the rinsing water in the first and second hot water supply channels (2) and (7) is performed when the shower device (A) is first activated. As shown in the time chart of FIG. 7, the water control means (58) and (59) are not turned on even after the previous shower use is completed.
In still at when left for the next use of a certain time, last operation of the shower switch _{(b 1 -1) ~ (b} 6 -3) is pressed is water stop for example in the last showering When 10 minutes have passed since the start, that is, at the time when the hot water supply temperature in the first hot water supply path (2) is predicted to be lower than the predetermined temperature, the flush water in the first and second hot water supply paths (2) and (7) is removed. Execute in the same manner as described above, and prepare the first and second hot water supply channels (2) (7) for the next use.
The hot water supply inside is kept above a predetermined temperature.

In addition, when the first hot water supply path (2) described above is drained,
Even if the hot water supply temperature in the hot water supply path (2) does not reach the predetermined temperature even if the water is continued for three minutes, the water is stopped in the same manner as described above (FIG. 7). Poor preparation).

Also, the first hot water passage (2) hot water in is not maintained at a predetermined temperature or higher, the shower operation switch (b ₁ -1) ~ (b ₆
When the shower is used by pressing -3) and the hot water supply temperature in the second hot water supply path (7) is lower than a predetermined value, the drain valves (20a) and (20b) are opened to open the second hot water supply path (7). ) Is performed alone (not shown).

As described above, the second hot water supply path (7) is independent as an all-water path, and is divided into branch paths (7a) and (7b) units.
Since water is supplied from the drain valves (20a) and (20b) at the downstream ends of both branch paths for a predetermined time while the hot water is supplied from the hot and cold water mixing tap (3), the first hot water supply path ( 2) Following the rinse water, the low-temperature residual hot water in the second hot water supply path (7) can be surely replaced with the appropriate-temperature hot water in a short time, and the preparation of the appropriate-temperature spouting water can be promptly completed.

After turning on the power as described above, the first and second hot water supply channels (2)
When the preparation of stearyl water is completed appropriate temperature water discharged (7) is completed, the operation switch (b ₁ -1) ~ of the shower usable lamp (66) lights to the operation panel (a ₇₎ (b ₆ -3) is enabled, and thereafter, the shower desired switch (b ₁ -
1) to (b ₆ -3) by pressing the operation control unit (50)
It is the solenoid valve (8a) (8b) outputs an operation signal for opening the appropriate temperature hot water of the second hot water path (7) of the shower water outlet of the object _{(a 1 -1) ~ (a} 6 -2) It is spouted immediately.

In the shower device (A) of this embodiment, since the hot water supply pressure from the hot water supply source (1) is limited, each of the showers (a ₁ ) to (a ₁ )
(A ₆ ) is used while switching any one of them, or an overhead shower (a ₁ ) and a body shower (a ₄ ), a hand shower (a ₅ ) and a body shower (a ₄ ), and an under shower (a ₆ ) Like the overhead shower (a ₁ ), the shower (a ₁ ) (a ₃ ) (a ₅ ) for supplying hot water from the branch (7a) side, and hot water is supplied from the branch (7b) side. It is effective that the showers (a ₂ ), (a ₄ ), and (a ₆ ) are simultaneously spouted one by one, and the combination of these showers is changed according to the user's preference.
Although the combination and switching operation of these showers can be performed manually by the user, in this embodiment, several types of water discharge programs are installed in advance in the operation control unit (50), and the operation panel (a ₇ ) The automatic mode switches (67a), (67b), and (67c) are selected and executed. This allows each shower (a ₁ )
~ (A ₆₎ water discharge to cooperate with the purpose of from, it is possible to enjoy with ease the effective shower bath.

Each shower spout _{(a 1 -1) ~ (a} 6 -2) is optimal water spouting volume for different types also differ depending spout each. Therefore, the shower device (A) of the present embodiment detects the amount of water flowing in the two branch paths (7a) (7b) by using the water amount sensors (14a) (14b) of the two branch paths (7a) (7b). By controlling the operation of the flow control valves (13a) (13b), the shower water outlets (a ₁ ) discharged from the two branch passages (7a) (7b) respectively.
From -1) to (a ₆ -2), control is performed so as to discharge an optimal amount of water.

Further, water spouting volume spouted from the shower water outlet _{(a 1 -1) ~ (a} 6 -2) , along with being kept at the optimal flow rate during water discharge as described above, the value display unit (62a) (62
The operation control unit (50) displays the water amount sensors (14a) (14b) by pressing the + and-buttons (61a) and (61b) to change the water discharge set value to a desired value.
While decoding the detection signal, the flow control valves (13a) (13b)
Outputs an operation signal to increase or decrease the valve opening degree,
The water discharge amount set on the display units (62a) (62b) is realized.

When is water shut-off shower used as described above, under the shower (a ₆₎ and a hand shower (a ₅₎ Shower except spout (a ₁ -1) third hot water passage (a ₄ -2) (9a )
Although a small amount of hot water that has not been discharged from the shower water outlet remains in (9b), the operation control unit (50) switches the drain valve (11a) (11
b) Open the valve and rinse the residual water.

Third stearyl water control means of the operation control unit (50) (60), shower (a ₁₎ drainage valve to third hot water passage of the shower after use of (a ₆₎ (9a) (9b) (11a ) (11b) and the common drain valves (11c) (11d) are opened to open the third hot water supply channel (9a) (9
It has a control function to drain the hot water remaining in b).

Therefore, for example, the showers (a ₁ ) and (a ₃ ) communicated to the branch (7a) side of the second hot water supply path by the automatic mode operation.
(A ₅ ) and the showers (a ₂ ), (a ₄ ), and (a ₆ ) connected to the branch path (7b) side are simultaneously discharged one by one, and the operation is continued while sequentially switching the combination of these shower discharges. case, the third stearyl water control means (60) is a solenoid valve (8a) (8b) is closed by the shower spout (a ₁ -1)
(A ₆ -2) drain valve (11a) (11b) and the common drain valve (11
c) Output an operation signal for (11d) to open the valve for a certain period of time.

The third water control means (60) starts the eighth after the power is turned on.
A water cycle of A and B2 system is formed as shown in the figure.

Both water cycles A and B are, for example, a cycle of 40 seconds in one cycle of an operation period of 10 seconds and a stop period of 30 seconds. ing.

The soot water in each of the showers (a ₁ ), (a ₃ ), and (a ₅ ) on the branch (7a) side of the second hot water supply path (7) is subjected to the water cycle A.
It is executed within the operation period of 10 seconds immediately after stopping water in
The rinsing water of each shower on the branch path (7b) side is executed during the operation period immediately after the water stoppage in the all water cycle B.

The operation signal output from the third water control means (60) is executed within the operation period of 10 seconds in the both water cycles A and B, and the predetermined drain valve (11a) (11b)
Each shower spout when but which is opened _{(a 1 -1) ~ (a} 6
-2) Initial value of valve opening time corresponding to each drain valve (11a)
(11b) Operation counters (7a-n) (7b
-N), and immediately after that, the drain valves (11a) and (11b) that were opened when the operation counter becomes zero after being decremented by, for example, one second are closed (eighth). Figure).

As described above, each shower (a ₁ ) of the branch road (7a)
(A ₃ ) (a ₅ ) and branch (7b) system shower (a ₂ ) (a ₄ )
(A ₆ ) The all water is shifted from each other by a large number of drain valves (11a) (11b) and solenoid valves (8a) with a predetermined power.
This is a means for operating (8b) without hindrance. In addition, the operating period and the stopping period of all the water cycles A and B are 20 cycles each of 10 seconds.
It can be reduced to about seconds.

As described above, the drain valves (11a) and (11b) of each of the third hot water supply channels (9a) and (9b) are operated independently and independently by the operation control of the third water control means (60). The remaining hot water in the third hot water supply channels (9a) and (9b) is drained every time the shower is stopped.

Therefore, the hot water supply in the third hot water supply path is changed to the second hot water supply as in the prior art.
There is no need to flush water through the water heater, and the use of each shower (a ₁ ) to (a ₆ ) is continued while being sequentially switched, while the third hot water supply path (9a) (9)
b) The inside of the hot water supply channels (9a) and (9b) are emptied for the next use by flushing the inside of the hot water supply path (9a) and (9b). It is possible to immediately discharge water at an appropriate temperature without accompanying temperature drop.

The second hot water supply path in the above-described shower device may be configured as a single system path without branching, and a drain valve may be provided at a downstream end thereof. When the second hot water supply path is configured as a single system path, there is only one hot water supply path to which the on-off valve and the shower discharge port can be connected, and the size of the pipe and shower discharge is limited. There is an advantage that the system and all the water systems can be simplified, and the exchange of the hot water and the hot water in the second hot water system can be performed in the same manner as described above in which the second hot water system is branched. It is possible to do.

[Brief description of the drawings]

FIG. 1 is a simplified diagram of a piping system of a shower device embodying the present invention, FIG. 2 is a perspective view of the shower device, FIG. 3 is a piping diagram of the shower device with the piping system partially omitted, 4 is a block diagram showing the connection between the operation control unit and the solenoid valve, the drain valve, and the temperature thermistor. FIG. 5 is a front view of the operation panel. FIGS. 6 and 7 show the first and second hot water supply channels. FIG. 8 is a time chart showing the flush water operation, FIG. 8 is a time chart showing the flush water cycle of the third hot water supply channel, and FIG. 9 is a simplified diagram showing a conventional shower device. Drawing, A ...... shower apparatus a ₁ -1~a ₆ -2 ...... shower spout 1a ...... water heater (hot water source) 1b ...... hot water tank (hot water supply source) 2 ...... first hot water passage 3 ...... Hot water mixer tap 4 Drain valve (first hot water supply path) 6 Drain outlet 7 Second water supply path 7a, 7b Branch path 8a, 8b Open / close valve (solenoid valve) 9a, 9b 3 hot water supply channels 11a, 11b drain valve (third hot water supply channel) 12a, 12b ... third drain water channel 20a, 20b drain valve (second hot water supply channel) 21a, 21b ... second drain water channel (drain channel) 19: temperature thermistor (first hot water supply path) 22a, 22b: temperature thermistor (second hot water supply path) 50: operation control unit 58, 58 ': first water control means 59: second water supply means Water control means 60... Third water control means

Continuation of front page (72) Inventor Yasuharu Kato 2-1-1, Nakajima, Kokurakita-ku, Kitakyushu-shi, Fukuoka Tochiki Kiki Co., Ltd. (58) Field surveyed (Int.Cl. ⁶ , DB name) A47K 3 / twenty two

Claims (2)

(57) [Claims] 1. A first hot water supply path from a hot water supply source to a hot / water mixer tap, a second hot water supply path connected to a secondary side of the hot / water mixer tap and connected to one or more on-off valves, and each on-off valve A third hot water supply channel leading to each of the water outlets, a drain valve disposed in each of the third hot water supply channels, immediately before the hot water mixing tap in the first hot water supply channel, and a downstream end of the second hot water supply channel; A drainage channel connecting the valve with a drainage port at the bottom of the device;
A hot water temperature detecting means for detecting a temperature of hot water in the second hot water supply path, wherein a drain valve of the first hot water supply path is opened when the hot water temperature in the first hot water supply path is lower than a predetermined value. First water control means for draining hot water from the hot water supply source through the drainage channel until the hot water in the hot water reaches a predetermined temperature; and after the hot water supply temperature in the first hot water supply channel is maintained at a predetermined temperature. The drain valve of the second hot water supply path is opened for a predetermined time or until the hot water supply in the second hot water supply path reaches a predetermined temperature, and the hot water supply from the hot / water mixer tap is started while the hot water supply of the second hot water supply path is being drained. (2) a second water control means for flowing into the hot water supply channel, and a hot water supply remaining in the third hot water supply channel after the water stoppage by opening the drain valve of the third hot water supply channel after stopping the water discharge from the water discharge port. A hot water supply device comprising: third water control means for draining water. 2. A first hot water supply path from a hot water supply source to a hot water mixing tap, a second hot water supply path connected to a secondary side of the hot water mixing tap and connected to one or more on-off valves, and each on-off valve. A third hot water supply channel leading to each of the water outlets, a drain valve disposed in each of the third hot water supply channels, immediately before the hot water mixing tap in the first hot water supply channel, and a downstream end of the second hot water supply channel; A drainage channel connecting the valve with a drainage port at the bottom of the device;
Temperature detecting means for detecting the temperature of hot water in the second hot water supply path, and when the hot water temperature in the first hot water supply path is lower than a predetermined value, the drain valve of the first hot water supply path is opened to open the hot water supply path. If the hot water in the first hot water supply channel does not reach the predetermined temperature within a predetermined time after the hot water supply from the hot water supply source is drained from the drainage channel until the hot water supply reaches the predetermined temperature, and after all the water is executed, A first water control means for stopping the flushing water, and a water supply valve in the first hot water supply channel maintained at a predetermined temperature, and then a drain valve of the second hot water supply channel is set for a predetermined time or in the second hot water supply passage. A second water control means for opening the valve until the hot water reaches a predetermined temperature and flowing hot water from the hot / water mixer tap into the second hot water path while flushing hot water in the second hot water supply path; After stopping the water discharge from the water outlet, the drain valve of the third hot water supply path is opened to supply the hot water remaining in the third hot water supply path after the water stoppage. Water heater, characterized in that it comprises a third stearyl water control means for.