JP2002005508A - Hot-water supplier for bath with shower for dashing hot water - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hot-water supplier for bath with shower for dashing hot water, which enables users to dash hot water maintained at an appropriate temperature on their bodies at locations, having no drain and to take baths by always maintaining hot water in a clean state. SOLUTION: This hot-water supplier 1 for bath is provided with a hot water supplying and heating circuit 4 and a circulating and heating circuit 5, and the circuit 5 is composed of a heat exchanger 13 for circulation and heating, a return pipe 14, and a supply pipe 15. The circuit 5 is also provided with a temperature sensor 18 for hot water delivery and another temperature sensor 21 for incoming water, used for adjusting the temperature of hot water to the appropriate temperature. A shower-switching three-way valve 27 is connected to the middle of the supply pipe 15, and the pipe 15 is selectively connected to a bathtub 17 or a pipeline 30 for shower. To the pipeline 30, a shower hose 32 or drainage hose 33 is made to be selectively connectable. The return pipe 14 is provided with a filter 28, which cleans hot water by making the hot water flow backward.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bath water heater with a shower for hot water used in a bathtub which can be used in a room or facility without drainage equipment, and is particularly suitable for home care of a handicapped person or an elderly person. The present invention relates to a bath water heater with a shower for hot water.

[0002]

2. Description of the Related Art In recent years, the importance of home care has been recognized, and various home care devices and goods have been developed and spread, but the need for bathing of care receivers has also increased. Usually, a bathtub is carried into a room without drainage such as a bedroom or a living room, and is filled with hot water to bathe a cared person.

[0003]

In order to carry a bathtub into a room without drainage, such as a bedroom or a living room, and to take a bath, the hot water cannot be spilled into the room. There is a need for a hot water supply device with a water level adjustment that discharges a quantity of hot water and keeps the water level at a predetermined level in the bathtub. by the way,
In fact, if you take a bath at home of the care recipient,
There are the following problems.

(1) The bathtub for nursing care cannot be spilled outside, but the hot water in the bathtub gradually becomes dirty because fresh hot water cannot be supplied to the bathtub steadily. Then, when bathing in the bathtub, it may be poured over the face or head as hot water, but a separate shower may be provided for that purpose, but the equipment is complicated, so the hot water in the bathtub is circulated and used for showering Configuration. However, it gradually becomes dirty during bathing, so it is not suitable as hot water for showers that is poured over the face or head as hot water.

(2) When circulating hot water is used as hot water in a shower, the temperature of the hot water gradually decreases. However, if the shower water is heated too much, the hot water may cause burns and other dangers.

(3) When a bathtub is used in a room without drainage equipment, it is important to easily drain the water from the bathtub. However, a hose for drainage is often used in the bathtub or piping for hot water supply. Not only complicates the configuration,
It takes time. Therefore, a measure for easily draining hot water from the bathtub is required.

[0007] The present invention solves the above-mentioned problems that occur when a bathroom is brought into a room without drainage in home care, and the bath is clean and the hot water is not hot and does not cool down. The present invention realizes a bath water heater with a shower for hot water which has a simple structure, which can realize a shower with hot water and can easily drain hot water from a bathtub after bathing.

[0008]

According to the present invention, there is provided a hot water shower having a hot water supply heating circuit and a circulating heating circuit communicable with the hot water supply heating circuit through a communication passage. In a bath water heater, the hot water supply heating circuit includes a hot water supply heat exchanger, and the circulation heating circuit includes:
A heat exchanger for circulation heating, and an outgoing pipe communicating with the bathtub and supplying hot water from the heat exchanger for circulation heating to the bathtub,
A return pipe communicating with the bathtub and returning hot water from the bathtub to the heat exchanger for circulating heating, and in the middle of the going pipe, the upstream of the going pipe is selectively connected to the bathtub or shower pipe. And a shower hot water supply device with a shower for hot water, characterized in that a shower switching three-way valve communicating with the shower water is provided.

The circulating heating circuit is provided with a temperature sensor for detecting a temperature of the circulating hot water, and the hot water is heated by a circulating heating heat exchanger based on the temperature detected by the temperature sensor. The configuration may be such that the temperature is controlled to be appropriate.

In the middle of the return pipe, a filter for removing dust in the bathtub is provided, and a three-way filter cleaning switching valve for selectively communicating the filter with the bathtub or drain pipe is provided. The filter is provided, and the filter can be washed by feeding back hot water or water in the return pipe, and the washed hot water or water can be drained from the filter cleaning switching three-way valve to a drain pipe. It may be configured.

[0011] The shower pipe may be configured such that a shower hose or a drain hose is selectively connected thereto.

A shower / drain three-way valve for selectively communicating the shower switching three-way valve with a shower hose or a drain hose may be provided in the middle of the shower pipe.

A shower switching unit comprises the shower switching three-way valve, the filter, and the filter cleaning switching three-way valve. The shower switching unit includes the hot water supply heat exchanger and the circulation heating heat exchanger. It is good also as composition provided separately from the main part of the bath water heater with a shower for hot water provided.

A shower switching unit comprises the shower switching three-way valve, the filter, the filter cleaning switching three-way valve, and the shower / drain three-way valve. The shower switching unit comprises the hot water supply heat exchanger and the The configuration may be provided separately from the main body of a bath water heater with a shower for hot water provided with a heat exchanger for circulation heating.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of a bath water heater with a shower for hot water according to the present invention will be described below based on embodiments with reference to the drawings. A bath water heater with a shower for hot water according to the present invention supplies hot water to a bath tub provided in a room without drainage so as to circulate hot water, and a bath water heater and an integrated or separate bath water heater. And a shower switching unit provided in the above.

(Embodiment 1) FIG. 1 is a view showing an embodiment 1 of a bath water heater with a shower for hot water according to the present invention. The shower switching unit 2 is provided separately from the bath water heater 3.

The bath water heater 3 comprises a hot water supply heating circuit 4 and a circulation heating circuit 5. The hot water supply heating circuit 4 includes a hot water supply heat exchanger 7 for heating water by the heat of the combustor 6, a water supply pipe 8 having one end connected to the inlet side of the hot water supply heat exchanger 7, and one end connected to the outlet side. Hot water pipe 9, a first water flow sensor 10 provided on water supply pipe 8, a water flow regulating valve 11 provided on hot water pipe 9, and a bypass pipe having both ends connected to water supply pipe 8 and hot water pipe 9 12 are provided.

The circulating heating circuit 5 includes a circulating heating heat exchanger 13 for heating hot water with the heat of the combustor 16, a return pipe 14, and a going pipe 15. One end of the return pipe 14 is connected to the heat exchanger 13 for circulation heating, and the other end can communicate with the bottom of the bathtub 17 or near the bottom (a position where hot water in the bathtub 17 can be drained) via the shower switching unit 2. It is connected to the. As with the return pipe 14, one end of the going pipe 15 is connected to the heat exchanger 13 for circulation heating, and the other end is connected to the bathtub 17 via the shower switching unit 2 so as to communicate with the bathtub 17.

The outflow pipe 15 is provided with a tapping temperature sensor 18. The return pipe 14 is provided with a circulation pump 19, a second water amount sensor 20, and an incoming water temperature sensor 21.

A communication pipe 22 having both ends communicating with the downstream side of the water amount adjusting valve 11 of the hot water supply heating circuit 4 and the downstream side of the water temperature sensor 21 of the circulation heating circuit 5 is provided. Water quantity sensor 23, pouring solenoid valve 24, check valve 2
5 are provided. The pouring solenoid valve 24 can be remotely operated by a remote controller 26.

The shower switching unit 2 is provided with a shower switching three-way valve 27, a filter 28, and a filter cleaning switching three-way valve 29. The shower switching three-way valve 27 is disposed in the middle of the going pipe 15, and is located upstream of the going pipe 15, downstream of the going pipe 15, and a shower pipe 30.
It is connected to the. Coupler 3 for shower piping 30
1 is connected to a shower hose 32. FIG.
As will be described later in (c), when draining hot water from the bathtub 17, a drain hose 33 can be connected to the shower pipe 30 via a coupler 31 instead of the shower hose 32.

In the normal bathing state, the shower switching three-way valve 27 is in the “bath side” where the upstream and downstream of the going pipe 15 communicate with each other (the state of FIG. 1. In the figure, the triangular hatching of the three-way valve is closed. In addition, when the shower is used, the remote controller 26 is used to switch between the upstream of the going pipe 15 and the “shower side” where the shower pipe 30 is connected.

The filter 28 and the filter cleaning switching three-way valve 29 are arranged in series in the middle of the return pipe 14. The filter cleaning switching three-way valve 29 enables the filter 28 to be selectively connected to the bathtub 17 or the drain pipe 34, and is configured to be appropriately switched by the remote controller 26.

In a normal bathing state, the filter cleaning switching three-way valve 29 is switched so that the bathtub 17 and the filter 28 communicate with each other. Thereby, the hot water returned from the bathtub 17 passes through the filter 28, so that the hot water is filtered and purified. Further, as will be described later, when cleaning the filter 28, the filter cleaning switching three-way valve 29 is switched so that the filter 28 and the drain pipe 34 communicate with each other. Filter 2
8. After flushing the filter 28 with hot water or water in reverse,
The dust removed from the filter 28 is drained together with the washing water from a water pipe 34 to a drainage facility (appropriate drainage facility such as a bathroom or a washroom) 35.

The operation of the bath water heater 1 with a shower for hot water of the first embodiment having the above configuration will be described below. Figure 1
In, when hot water is applied to the bathtub 17 for bathing,
The shower switching unit 2 is, as shown in FIG.
The shower switching three-way valve 27 is switched to the bath side (maintained as it is in FIG. 1) so that the upstream and downstream of the going pipe 15 are communicated. The filter cleaning switching three-way valve 29 is switched so that the bathtub 17 and the filter 28 communicate with each other.

In FIG. 1, water is supplied from a water supply pipe 8 of a hot water supply heating circuit 4, and this water is heated by a hot water supply heating heat exchanger 7 to become hot water. Opens the pouring solenoid valve 24 and then gradually opens the water amount adjusting valve 11 to supply hot water to the return pipe 14 of the circulation heating circuit 5 through the tapping pipe 9 and the communication pipe 22 while preventing water hammer. I do. The supplied hot water flows from the return pipe 14 through the circulation heat exchanger 13 and the outgoing pipe 15 and is poured into the bath 17. When the pouring amount detected by the third water amount sensor 23 reaches a predetermined amount, the pouring solenoid valve 24 is automatically closed and pouring into the bathtub 17 is stopped.

Bath water heater 1 with shower for hot water
According to the above, the shower 36 can be used when hot water is applied during bathing. To this end, the remote controller 26 is operated to operate the circulation pump 19, and as shown in FIG. 2B, the shower switching three-way valve 27 is switched to the shower side so that the upstream of the going pipe 15 and the shower pipe 30 are switched. Communication.

Then, the hot water in the bathtub 17 passes through the return pipe 14, passes through the filter 28, passes through the circulating pump 19, the circulating heating heat exchanger 13, the outgoing pipe 15, and flows from the shower switching three-way valve 27 to the shower pipe 30, shower hose 32
Supplied to Then, the hot water supplied to the bather from the shower 36 returns to the bathtub 17 and returns to the return pipe 14 again.
Since the water is circulated to the filter 28 and the filter circulation heating circuit 5, the water level in the bathtub 17 does not change.

When the shower 36 is used, the bathtub 17
The hot water inside becomes warm. The temperature of the hot water in the bathtub 17 is detected by an incoming water temperature sensor 21 and an outgoing water temperature sensor 18. Then, when the temperature of the hot water supplied to and circulated to the shower 36 becomes lower than a preset temperature, this is detected by the incoming water temperature sensor 21 and the outgoing water temperature sensor 18. With this detection output, the shower switching three-way valve 27 is switched to the bath side shown in FIG. 2A to stop using the shower 36, and reheat the hot water while circulating the hot water between the bathtub 17 and the circulation heating circuit 5. And circulates cold water into a heat exchanger for circulation heating 1
If the heating is performed by 3, the temperature of the hot water in the bathtub 17 can be maintained at an appropriate temperature.

When the hot water in the bathtub 17 becomes wet while the shower 36 is used, the shower switching three-way valve 27 is not switched to the bath side, but the shower side (shower circulation state) is followed. It is good also as a structure which enables burning. However, in this case, the hot water from the shower 36 becomes too hot, and it is easy for the bather to get burned.
It is necessary to make the structure such that the reheating combustion by 6 is extremely weak and the heating temperature of the hot water does not increase.

According to the bath water heater 1 with a shower for hot water of the present invention, since the filter 28 is provided in the middle of the return pipe 14, the hot water is filtered while being circulated, so that the hot water can be bathed in the purified hot water. Can be. In particular, shower 3
Since clean water can be used as hot water from 6, the bather can comfortably use clean water from the shower 36 over his face and head.

When the bath is finished and the hot water in the bathtub 17 is drained, the shower switching three-way valve 27 is switched to the shower side, as shown in FIG. And the shower hose 32 is removed from the shower pipe 30, and a drain hose 33 is connected to the shower pipe 30 via the coupler 31. Connect the tip of the drain hose 33 to the drain
In this state, the circulating pump 19 is operated to operate the outgoing pipe 15, the shower switching three-way valve 27, and the shower pipe 3.
0, drainage can be performed through the drainage hose 33 and the drainage equipment 35 path.

When the filter 28 is to be washed after bathing, the three-way valve 29 for switching the filter washing is connected with the remote controller 26 as shown in FIG. Switch. Then, the pouring solenoid valve 24 is opened, and hot water (or water) is
The circulation pump 19 is operated to flow backward so as to flow from the return pipe 14 to the filter 28.

Then, since hot water (or water) flows in the filter 28 in the opposite direction, dust and the like attached to the filter 28 are washed away. The dust washed off from the filter 28 is removed by the filter cleaning switching three-way valve 29 together with hot water (or water) for cleaning.
From 8, the water can be drained and removed through a drain pipe 34 to a drain facility 35.

(Embodiment 2) FIG. 3 is a view showing Embodiment 2 of a bath water heater with a shower for hanging hot water according to the present invention. The bath water heater 37 with a shower for hot water of the second embodiment has basically the same configuration as that of the first embodiment, and performs the same operation. However, the shower switching unit 38 of the bath water heater 37 with a shower for hot water in the second embodiment is not limited to the shower switching three-way valve 27, the filter 28, and the filter cleaning switching three-way valve 29 provided in the first embodiment. Further, a shower / drain switching three-way valve 39 which can be controlled by the remote controller 26 is provided.

Specifically, in the first embodiment, the shower pipe 30 is connected to the shower switching three-way valve 27. In the second embodiment, a shower / drain switching three-way valve is further provided in the middle of the shower pipe 30. 39 are connected. A shower hose 32 is connected to the tip of the shower pipe 30 as in the first embodiment. The drainage hose 33 is connected to the shower / drain switching three-way valve 39,
The shower switching three-way valve 27 is switched so as to selectively communicate with the shower hose 32 or the drain hose 33. The tip of the drain hose 33 extends to the drain facility 35.

Since the bath water heater 37 with a shower for hot water of the second embodiment has such a configuration, it is possible to switch the shower water during normal bathing as shown in FIGS. 3 and 4 (a). The three-way valve 27 is switched to the bath side, and the filter cleaning switching three-way valve 29 is switched so that the bathtub 17 and the filter 28 communicate. Hot water circulates in the route of the outgoing pipe 15, the bathtub 17, the return pipe 14, the filter 28, and the circulation heating circuit 5.

By operating the remote controller 26, as shown in FIG. 4B, the shower switching three-way valve 27 is switched to the shower side, and the shower / drain switching three-way valve 39 is switched to the shower side. Shower piping 30
By communicating with each other, hot water can be circulated through the shower 36 to supply hot water, as in the first embodiment.

Also, by operating the remote controller 26, FIG.
(C) As shown in FIG.
Is switched to the drain hose 33 side, the going pipe 15 and the drain hose 33 are communicated with each other, and the circulation pump 19 is operated, whereby the hot water in the bathtub 17 can be drained to the drain equipment 35. Therefore, according to the bath water heater 37 with a shower for hot water in the second embodiment, the trouble of removing the shower hose 32 and changing to the drain hose 33 as in the first embodiment can be omitted.

In the second embodiment, as in the first embodiment, the filter 28 and the three-way valve 2 for switching the filter washing are used.
9 is connected in series in the middle of the return pipe 14. The filter cleaning switching three-way valve 29 is connected to the bathtub 17 and the filter 28 and to the drain pipe 34, and is configured to be appropriately switched by the remote controller 26.

Therefore, when cleaning the filter 28, as shown in FIG. 4D, the filter cleaning switching three-way valve 29 is switched so that the filter 28 communicates with the drain pipe 34, and the filter 28 is removed. The waste can be drained and removed together with the washing water through a drain pipe 34 to a drain facility 35.

Although the embodiments of the present invention have been described based on the embodiments, the present invention is not limited to the above-described embodiments, and various modifications may be made within the scope of the technical matters described in the claims. It goes without saying that there are embodiments.

[0043]

Since the bath water heater with shower for hot water according to the present invention has the above-described configuration, the following effects are obtained. (1) The hot water in the bathtub can be easily showered and used as hot water by switching the shower switching three-way valve into a shower circulating state. Moreover, since the temperature of the hot water is constantly monitored by the incoming water temperature sensor and the outgoing water temperature sensor,
When the temperature of the hot water becomes low while using the shower, the three-way valve for switching the shower is switched to a bath circulation state, and the hot water can be heated to a proper temperature by performing reheating. Alternatively, by performing additional heating in a weak combustion state without changing the shower switching three-way valve in the shower circulating state, the hot water for showering can be used at an appropriate temperature without danger of burns or the like. Therefore, a comfortable hot water temperature can be maintained without lowering the temperature of the hot water, not only during normal bathing, but also when the shower is used as hot water.

(2) The shower switching three-way valve is switched to the shower side and a drain hose is connected to the shower pipe, or a shower / drain switching three-way valve is further provided in the shower switching three-way valve, and this is provided for the shower. If the pipe and drainage hose are connected, the hot water in the bathtub can be easily drained from the drainage hose to the drainage facility. Therefore, bathing, which has become a problem with the aging of society, can be easily assisted by installing a bathtub even in a room without drainage facilities.

(3) Since a filter is provided in the return pipe of the circulation heating circuit, the circulated hot water can be filtered and used as clean hot water. Since the hot water is so clean, it can be used comfortably on the head and face as shower water. After bathing, the filter and drainage pipe are connected by the filter cleaning switching three-way valve, and if the hot water is back-flowed, the filter can be easily cleaned without human intervention. Easy.

(4) Although the shower switching unit is provided integrally with or separate from the bath water heater, if it is provided separately, it can be easily attached as an option to an existing bath water heater. A bathtub provided in a place without drainage equipment can be easily remodeled with a shower for hot water as needed.

[Brief description of the drawings]

FIG. 1 is a view showing Embodiment 1 of a bath water heater with a shower for hanging hot water according to the present invention.

FIG. 2 is a view for explaining the operation of the bath water heater with a shower for hot water of Example 1.

FIG. 3 is a view showing Embodiment 2 of a bath water heater with a shower for hanging hot water according to the present invention.

FIG. 4 is a view for explaining the operation of the bath water heater with a shower for hot water of the second embodiment.

[Explanation of symbols]

 1, 37 bath water heater with shower for hot water 2, 38 shower switching unit 3 bath water heater 4 hot water heater circuit 5 circulation heating circuit 7 heat exchanger for hot water supply 13 heat exchanger for circulation heating 14 return pipe 15 outgoing pipe 6, Reference Signs List 16 Combustor 17 Bath tub 18 Hot water temperature sensor 19 Circulation pump 20 Second water quantity sensor 21 Incoming water temperature sensor 22 Communication pipe 23 Third water quantity sensor 24 Pouring solenoid valve 26 Remote control 27 Shower switching three-way valve 28 Filter 29 Filter washing switching three-way Valve 30 Shower piping 31 Coupler 32 Shower hose 34 Drain pipe 36 Shower 39 Shower / drain switching three-way valve

Continuation of the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat II (reference) A61H 33/00 310 F24H 9/00 L F24D 3/08 W F24H 9/00 A47K 3/22 F24D 3/08 J (72 ) Inventor Tsuneo Funabiki 93F, Edo-cho, Chuo-ku, Kobe-shi, Hyogo F-term in Noritz Co., Ltd. (Reference) AD31 3L070 BB02 BC03 BC15 BC16 DE04 DF07 DG01 4C094 AA01 BB15 BB16 BC12 DD14 EE20 FF02 FF11 GG02 GG07

Claims (7)

[Claims] 1. A bath water heater with a shower for hot water comprising a hot water heating circuit and a circulating heating circuit communicable with the hot water heating circuit via a communication passage, wherein the hot water heating circuit is provided with a hot water heating circuit. The circulation heating circuit is provided with a heat exchanger for circulation heating, a circulating pipe communicating with the bathtub and supplying hot water from the heat exchanger for circulation heating to the bathtub, And a return pipe for returning hot water from the bathtub to the heat exchanger for circulation heating. In the middle of the going pipe, the upstream of the going pipe is selectively connected to the bathtub or the piping for the shower. A bath water heater with a shower for hot water, wherein a three-way valve for switching showers is provided. 2. The circulation heating circuit is provided with a temperature sensor for detecting a temperature of the circulating hot water, and the hot water is heated by a circulating heating heat exchanger based on the temperature detected by the temperature sensor. 2. The bath water heater with a shower for hanging hot water according to claim 1, wherein the temperature is controlled to an appropriate temperature. 3. A filter for removing dust in the bathtub is provided in the middle of the return pipe, and the filter is selectively connected to the bathtub or the drainpipe for three-way filter cleaning switching. A valve is provided, and the filter can be washed by back-flushing hot water or water in the return pipe, and hot water or water after washing can be drained from the three-way valve for switching filter washing to a drain pipe. 2. The method according to claim 1, wherein
Or the bath water heater with a shower for hot water according to 2. 4. The bath water heater with a shower for hot water according to claim 1, wherein a shower hose or a drain hose is selectively connected to the shower pipe. 5. A shower / drain three-way valve for selectively connecting the shower switching three-way valve to a shower hose or a drain hose in the middle of the shower pipe. 4. A bath water heater with a shower for hot water according to 2 or 3. 6. A shower switching unit comprising the shower switching three-way valve, the filter, and the filter cleaning switching three-way valve, wherein the shower switching unit includes the hot water supply heat exchanger and the circulating heating heat exchange. The bath water heater with a shower for hot water according to claim 1, 2, 3 or 4, wherein the bath water heater with a water heater is provided separately from a main body of the bath water heater with a water heater. 7. A shower switching unit includes the shower switching three-way valve, the filter, the filter cleaning switching three-way valve, and the shower / drain three-way valve, and the shower switching unit includes the hot water supply heat exchanger. The shower for hot water according to claim 1, 2, 3 or 5, wherein the shower is provided separately from a main body of a bath water heater with a shower for hot water provided with the heat exchanger for circulation heating. With bath water heater.