JP2789780B2 - Shower equipment - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a shower apparatus for flushing low-temperature water remaining in a hot water supply path in a hot water supply system of a shower apparatus.

(Prior Art) FIG. 3 shows a shower apparatus having a large number of shower water outlets. This shower device supplies hot water from a hot water supply source (not shown) to the 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) sets an arbitrary temperature. The hot water mixed with the water is supplied to each water discharge solenoid valve (104) through a second hot water supply path (103) branched into two systems (103a) and (103b).

Each solenoid valve (104) is installed in parallel with a pair of drain valve (105), and various shower outlets (S ₁ ) to (S ₅ ) are provided downstream of both valves (104) and (105). Is connected to the third hot water supply path (106).

(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. And the above-mentioned shower device exchanges hot water in the first hot water supply path (102) by returning hot water in the first hot water supply path (102) to the hot water supply source through the circulation path (111) and circulating the hot water. The hot water supply in the second and third hot water supply channels (103) and (106) is stopped by closing the water stop valve (112) to stop the hot water supply from the hot and cold water mixing tap (101), and then the respective drain valves ( By opening the valves 105) and 109, the remaining hot water in the entire system flow is returned through the second hot water supply passage 103 so that 1
Water is drained from the book drainage channel (108) and replaced with new hot water.

The replacement of hot water using the circulation path (111) described above is referred to as a circulation method, and the method based on drainage from the drain valve (109) is referred to as drainage type soot water.

(Problems to be Solved by the Invention) However, the replacement of hot water supply by the above-described circulating method of the shower apparatus requires a circulating path (111) and a circulating mechanism (not shown), and the equipment is increased and complicated. . For this,
In addition to the increase in construction cost and structural cost, it is structurally difficult to reliably circulate hot water to just before the hot-water mixer tap, and low-temperature hot water may remain in the first hot water supply path (102). .

A second hot water supply path (103) in the shower device;
In order to replace the hot water supply in the hot water supply system, first, the water stop valve (112) is closed to stop the hot water supply from the hot and cold water mixing tap (101), and then the second and third hot water supply paths (103) ) The low-temperature hot water of all the systems in (106) is caused to flow backward through the second hot water supply passage (103) to drain water from one drainage passage (108), and thereafter, the water stop valve (112) is opened. Since new hot water is supplied, it takes time to exchange the hot water and hot water in the second hot water supply path (103), and it takes a long time to prepare for supplying hot water at an appropriate temperature after the solenoid valve. Had become.

Further, during the use of each shower, for example, if time elapses without using only a specific shower, the temperature of hot water remaining in the third hot water supply path connected to the shower water outlet decreases. Cannot wash water only in the third hot water supply channel during use of the shower, so that the next time the shower is used,
Either discharge the remaining low-temperature water in the hot water supply path as it is, or close the water stop valve (107) as described above to stop using the shower, and then supply water to all the systems in both the second and third hot water supply paths. Had to be drained from the drain valve (109), drained and replaced with new hot water, and this preparation time also required a long time.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the prior art, and a first object of the present invention is to provide a shower apparatus with a simple structure and a new hot water supply from a hot water supply source. By providing means for replacing hot water in the first hot water supply path, which can be surely replaced before the hot water supply, reduces the structural cost, prevents the mixing of low-temperature water after the hot-water mixer tap, and provides a hot-water mixer tap. By separating the drain water structure of the second hot water supply path from the third hot water supply path to the open / close valve, the soot water in the second hot water supply path can be reliably reduced in a short time, and the open / close valve for shower water discharge Is to supply hot water at the appropriate temperature immediately.

Further, a second object of the present invention, in addition to the above-mentioned first object, is to allow soot water in a third hot water supply path to be provided for each shower water discharge port, whereby a proper temperature of low-temperature water is prevented from being mixed. It is to be able to perform shower spouting immediately.

(Means for Solving the Problems) In order to achieve the first object, in the shower apparatus of the present invention, a section from a hot water supply source to a hot water mixing tap is communicated through a first hot water supply path, and a secondary hot water mixing tap is provided. Connect the second hot water supply channel to the side,
One or a plurality of on-off valves are connected to the second hot water supply path, and a third hot water supply path connected to the secondary side of the on-off valve is connected to a shower water outlet, and a hot water mixing tap in the first hot water supply path is provided. Immediately before and at the downstream end of the second hot water supply channel, a drain valve for water was provided, and a drain channel was connected to the secondary side of the drain valve (claim 1).

In addition, in order to achieve the second object, the present invention communicates a hot water supply source to a mixed water mixing tap with a first hot water supply path, and connects a second hot water supply path to a secondary side of the hot water mixing tap, One or more on-off valves are connected to the second hot water supply path, a third hot water supply path connected to the secondary side of the on-off valve is connected to a shower water outlet, and hot water mixing in the first hot water supply path is performed. Immediately before the plug, at the downstream end of the second hot water supply channel, and at the third hot water supply channel, drain valves for water were provided, and a drain channel was connected to the secondary side of the drain valve (claim 2).

(Operation) In the shower apparatus according to the first aspect configured as described above, the temperature of the hot water remaining in the first and second hot water supply passages gradually decreases as time passes after the shower is used. When the drain valve of the first hot water supply channel is opened in this state, the low-temperature water in the first hot water supply channel flows into the drainage channel immediately before the hot water mixer tap, and is drained from the drainage port at the bottom of the device.

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

The second hot water supply channel provided with a drain valve at the downstream end is independent as an all-water channel. Therefore, when the drain valve for all the water in the second hot water supply channel is opened, the low-temperature water remaining in the second hot water supply channel flows into the respective drainage channels from the downstream end, and is drained from the drainage port at the lower part of the device. You.

When the remaining hot water in the second hot water supply channel is drained from the respective drain valves, the hot water in the entire second hot water supply channel is replaced with the hot water supplied from the hot and cold water mixing tap and opened and closed when the next shower is used. When the valve is opened, the water is supplied to the shower water outlet communicating with the on-off valve via the third hot water supply path.

Further, in the shower apparatus of claim 2, in addition, the drain valve provided in the third hot water supply passage can be operated independently, and when the drain valve of the shower is opened after use of the shower, Hot water in the three hot water supply channels flows down into the drainage channel and is drained to the outside from the drainage outlet. As a result, the third hot water supply path is drained irrespective of the second hot water supply path and becomes empty, and when the on-off valve of the shower is opened next time, the hot water supplied from the second hot water supply path is directly discharged from the shower outlet. Water is spouted from the spout.

(Effect of the Invention) Since the shower device of the present invention is as described above,
The following effects are obtained.

In the first aspect, the low-temperature hot water remaining in the first hot water supply path from the hot water supply source to the hot-water mixing tap is replaced with a new hot water supply by flushing through the drain valve immediately before the anhydrous mixing tap. As compared with the method in which the hot water and the hot water in the first hot water supply channel are exchanged by the circulation method as described above, the water structure of the first hot water supply channel becomes very simple, and the construction cost and construction cost can be reduced. it can.

In addition, while the low-temperature hot water in the first hot water supply channel is drained without remaining, the hot water can be replaced with a new hot water immediately before the hot water mixer tap, and the hot water supply in the first hot water supply channel can be reliably replaced in a short time. The hot water at an appropriate temperature without the mixture of cold and hot water can be supplied to the hot and cold water mixing tap.

By providing a drain valve for all water at the downstream end of the second hot water supply channel, the second hot water supply channel is made independent of the third hot water supply channel and the second hot water supply plug is supplied with new hot water from the hot water mixing tap. (2) Since the low-temperature water in the hot-water supply channel is flushed from the downstream end, the low-temperature water remaining in the second hot-water supply channel is surely quickly drained in a short time and replaced with hot water of an appropriate temperature. It is possible to supply immediately to.

By the above and the above, the low-temperature hot water supply in both the first and second hot-water supply paths can be exchanged, and hot-water supply at an appropriate temperature without mixing of the low-temperature water can be supplied within a short period of time after the on-off valve.

 Claim 2 has the following effects in addition to the above effects.

A drain valve for all water is provided in the third hot water supply channel so that all the water in the third hot water supply channel can be independently supplied. There is no need to rinse low-temperature hot water through the second hot water supply path, and after the shower stops, rinse water in the third hot water supply path in a short time to make the path empty and ready for the next use. Can be prepared.

Therefore, it becomes possible to immediately discharge the appropriate-temperature hot water from the second hot water supply path without mixing low-temperature water for each use.

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

FIG. 2 shows a shower apparatus (A) according to the present invention, in which various types of showers (a ₁ ) to (a ₆ ) are provided on both sides and upper and lower portions of a tower body (A ′) formed into a panel. .

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 connected by the hot water supply channel (2). A second hot water supply path (7), which branches into a two-system path, is connected to the secondary side of the hot and cold water mixing tap (3), and six and five branches are respectively connected to both branch paths (7a) and (7b). Solenoid valves (8a) and (8b) for shower water discharge are connected in parallel. And these solenoid valves (8a) (8
Third hot water supply channels (9a) and (9b) respectively connected to the secondary side of b)
Is in communication with the shower water outlet _{(a 1 -1) ~ (a} 6 -2).

Now will be described the shower _{(a 1) ~ (a 6} ), in Figure 1 _{(a 1 -1) (a 1} -2) (a 1 -3) is tower body (A ') were placed on top overhead shower (a ₁₎
Spray outlet, soft (foam) outlet, massage outlet, and in fact, each of the three outlets is one overhead shower (a ₁ ) as shown in FIG.
It is configured in a state where it is incorporated in.

(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 ₂
-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 ′), can be used together with the above showers,
It is used when shampooing 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 water mixer tap (3) uses a manual thermostatic mixing valve, and connects the first hot water supply path (2) to the hot water inlet of the hot water mixer tap (3) and communicates with the water supply tank (25). The water supply channel (10) is connected to the water supply port of the hot water / water mixing tap (3), and furthermore, the first hot water supply path (2) and the hot water / water mixing tap (3) upstream of the hot water mixing tap (3) are respectively stopped. A faucet (16), a strainer (17), and a check valve (18) are provided in this 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).

The shower device (A) of the present embodiment includes a first hot water supply path (2).
And the second hot water supply channel (7) are independently provided with a drainage type water structure, and the third hot water supply channels (9a) and (9b) are 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 opening and closing operation of the drain valve (4) is controlled by a control unit (not shown) described later. Also, this drain valve (4)
A drainage channel (5) is connected to the next side, and this is connected to a drainage port (6) arranged below 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 is connected to a control unit (not shown) 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 control unit.

Hot water supplied from the first hot water supply path (2) to the hot water mixing tap (3) is supplied to the hot water supply path (1) by the hot water mixing tap (3).
The water supplied from 0) is mixed with the desired temperature and flows into the second hot water supply path (7).

The second hot water supply path (7) is, for example, a two-system branch path (7a).
(7b), the two branch paths (7a) and (7b) are provided with water quantity sensors (14a) and (14b) for measuring the flow rate of hot water passing through the branch paths (7a) and (7b). Flow rate control valves (13a) (13b) for controlling the flow rate and temperature thermistors (22a) (22b) for measuring the temperature of the hot water in the branch passages (7a) (7b) 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 valve for use with (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 desired solenoid valves (8a) and (8b) one by one, an overhead shower (a ₁ ), a 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 the two branch paths (7a) and (7b) is controlled by the automatic control of the flow control valves (13a) and (13b), and the shower is opened in each of the 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, such as solenoid valves, are provided at the downstream ends of the branch passages (7a) and (7b) of the second hot water supply passage (7). Second drains (21a) and (21b) connected to the secondary side of the valve are connected to the above-mentioned drain (6), respectively.

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). The second drainage channel (21a) (21b) is communicated through (11d).

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

The under shower (a ₆ ) is the water outlet (a ₆ -1)
Since (a ₆ -2) is positioned in the lower portion of the apparatus, the third after use
Hot water remaining in the hot water supply channel (9b) naturally flows out of the water outlet, so that no water structure is required. In addition, the hand shower (a ₅ ) suspended on one side of the tower (A ′)
Since the low-temperature water is there is no worry applied to direct the user to be discharged from, also discarded water structure in the hand shower (a ₅₎ is not provided.

Each solenoid valve (8a) (8b) and flow control valve (13a) (13
b) and the first, second and third hot water supply channels (2), (7) and (9a)
Drain valves (4), (20)
a) (20b), (11a ) (11b) is, as mentioned above tower body (A ') control unit for operating the center of the operation panel (a ₇₎ (not shown) to operate the control, by this, the 1, the first
2, 3 each hot water channel (2), (7), performs a water discharge from (9a) stearyl and water (9b), each shower spout _{(a 1 -1) ~ (a} 6 -2) I have.

And Thus, the temperature of hot water remaining in the first hot-water supply passage (2) in is accompanied over time after use shower gradually decreases, then use the shower (a ₁₎ ~ (a ₆₎ When the temperature in the first hot water supply path (2) is a predetermined temperature (for example, 47 ° C. ± 3
° C) or less, the control unit (not shown) opens the drain valve (4) without opening the solenoid valves (8a) and (8b) to open the first hot water supply path ( 2) Drain the cold / hot water in the hot and cold water mixing tap (3) immediately before the hot water inlet, and drain the water (5).
Through the drain (6) to the outside.

When the inside of the first hot water supply path (2) is replaced with a new hot water supply sent from the hot water supply tank (1b) as the water is drained, the temperature of the hot water in the first hot water supply path (2) becomes the predetermined temperature. When the temperature rises to the temperature range and the temperature is detected by the temperature thermistor (19), the control unit closes the drain valve (4) to stop water.

Therefore, even when the shower is reused in a state where the temperature of the hot water in the first hot water supply path (2) decreases with time, the hot water of a predetermined temperature free of cold and hot water is mixed with the hot and cold water mixing tap (3). Can be supplied immediately.

After the flush water in the first hot water supply path (2) has been terminated and the hot water supply in the first hot water supply path (2) has been maintained at a predetermined temperature or higher, the two branch paths ( Open the drain valves (20a) and (20b) of 7a) and (7b) for a predetermined period of time to open the second drainage channel (21a).
(21b) Second hot water supply channel (7)
Replace the hot water in the room with the hot water mixed to the set temperature.

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 measuring in advance, for example, about 5 seconds in this embodiment.

The hot water supply in the second hot water supply path (7) is replaced based on the hot water temperature in the branch paths (7a) and (7b).
a) It may be performed by continuing water until the hot water temperature in (7b) becomes equal to or higher than the predetermined temperature.

As described above, according to the drain water structure of the second hot water supply path (7) in the shower device (A), the drain water path of the second hot water supply path (7) is changed to the third hot water supply path (9a) (9b). ), And is divided into all waterways in each branch (7a) (7b) unit. Then, while the fresh water is being supplied from the hot and cold water mixing tap (3), the remaining low-temperature water in the second hot water supply path (7) is separately supplied from the downstream ends of (7a) and (7b) of both branch paths. Therefore, the low-temperature water remaining in the second hot water supply path (7) can be surely replaced with a suitable hot water supply in a short time, and can be immediately supplied to each of the solenoid valves (8a) and (8b).

Further, the control and management of the flush water operation in the second hot water supply path (7) is performed by controlling the hot water supply temperature using the temperature thermistors (22a) and (22b) and managing the hot water supply time by a timer of a control unit (not shown). There is an advantage that it can be reliably performed by relatively simple means.

The above-mentioned various showers (a ₁ ) to (a ₆ ) are controlled by a control unit, for example, an overhead shower (a ₁ ), a body shower (a ₄ ), and a hand shower (a ₅ ).
And showers (a ₁ ) (a ₃ ) (a ₅ ) for supplying hot water from the branch (7a) side, such as body shower (a ₄ ), under shower (a ₆ ) and overhead shower (a ₁ ) , A shower (a ₂ ) supplied with hot water from the branch (7b) side
(A ₄₎ (a ₆₎ and simultaneously spouting one kind and can be used while replaced in accordance with combinations of these showers preference of the user.

Then, the third hot water supply path (9) of each shower (a ₁ ) to (a ₆ )
a) (9b) hot water remaining in, every time is stopped showers are used, their use shower spout (a ₁ -1) ~
(A ₆ -2) drain valve (11a) (11b) and (11c) (11d)
By opening the third drainage channel (12a) or (1
2b) rinse water and empty the third hot water supply channels (9a) (9b) immediately after use. Thereby, when the shower water outlet is used next time, the hot water at the set temperature from the second hot water supply path (7) can be directly discharged.

Thus, in the shower apparatus of the present embodiment, all the water in each of the third hot water supply paths (9a) and (9b) is supplied to the second hot water supply path (7).
Since it can be done independently of the water,
When the showers (a ₁ ) to (a ₆ ) are used repeatedly as described above, the remaining hot water in the third hot water supply path (9 a) (9 b) is drained for a short time for each used shower. The use of each shower (a ₁ ) to (a ₆ ) can be continued while keeping the temperature at a minimum, so that hot water can be supplied from any shower at an appropriate temperature without mixing of low-temperature water or temperature drop with time. It can discharge water.

In the above embodiment, the drain valves (20a) and (20b) of both branch paths (7a) and (7b) are simultaneously opened to open both branch paths (7a) and (7).
b) The flushing of water was performed at the same time, but the drain valve (20a) (20
By separately controlling the operation of b), all the water in the second hot water supply path (7) can be separately executed for each of the branch paths (7a) and (7b). If the hot water supply in 7a) is in a low temperature state below a predetermined level, only the drain valve (20a) is opened alone and the water is connected to one branch path (7b) while draining water in the branch path (7a). shower (a ₂₎ (a ₄₎
It is also possible to perform the water discharge from (a _6).

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, the number of hot water supply paths to which the on-off valve and the shower water discharge port can be connected becomes one, and the scale of piping and shower water discharge is limited. The water channel can be simplified, and furthermore, the exchange of the hot water and the hot water in the second hot water supply channel can be performed reliably as in the case of branching the second hot water supply channel as described above. .

[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, and FIG. 3 is a simplified diagram showing a piping system of a conventional shower device. In the figure, 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 port 7… second hot water supply path, 7a, 7b… branch path 8a, 8b… solenoid valve (open / close valve) 9a, 9b … Third hot water supply channel 11a, 11b… Drainage valve (third hot water supply channel) 12a, 12b… Third drainage channel (drainage channel) 20a, 20b: Drainage valve (second hot water supply channel)

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Yasuharu Kato 2-1-1, Nakajima, Kokurakita-ku, Kitakyushu-shi, Fukuoka Tochiki Kiki Co., Ltd. (56) References Japanese Utility Model 63-1886 (JP, U) Shokai 63-69917 (JP, U) Shohei 2-34916 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) A47K 3/22

Claims (2)

(57) [Claims] 1. A hot water supply source to a hot and cold water mixing tap is communicated through a first hot water supply path, a second hot water supply path is connected to a secondary side of the hot and cold water mixing tap, and one or more hot water mixing paths are connected to the second hot water supply path. And a third hot water supply path connected to the secondary side of the open / close valve is connected to a shower water outlet, so as to be located immediately before the hot water mixing tap in the first hot water supply path and at a downstream end in the second hot water supply path. And a drain device provided with a drain valve for water, and a drain channel connected to a secondary side of the drain valve. 2. A first hot water supply path from a hot water supply source to a mixed water mixing tap, a second hot water supply path is connected to a secondary side of the hot water mixing tap, and one or more hot water mixing paths are connected to the second hot water supply path. And a third hot water supply path connected to the secondary side of the open / close valve is connected to the shower water discharge port, and immediately before the hot / water mixing tap in the first hot water supply path and in the second hot water supply path. A shower device in which a drain valve for water is provided at each of a downstream end and a third hot water supply path, and a drain path is connected to a secondary side of the drain valve.