JP2016187403A - Bathroom hot water supply system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bathroom hot water supply system in which, when hot water is discharged at least from a shower device in a state that a bathtub of a bathroom is filled with hot water, a situation that cold water is discharged and a user feels a sense of discomfort can be reduced, and water is not wasted as in a conventional system.SOLUTION: A bathroom hot water supply system 1 includes a bathtub 10 to store hot water supplied from a hot water supply device 200, a shower device 40, and a hot water supply pipe 70 for supplying hot water from the hot water supply device 200 to the shower device 40. A pipe 71 for heat exchange in the middle of the hot water supply pipe 70 is arranged so as to exchange heat with a surface 10c on a side opposite to an inner wall surface 10b of the bathtub that contacts the hot water stored in the bathtub 10.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a bathroom hot water supply system.

  Conventionally, in a hot water supply system in a bathroom, when hot water is taken out from a currant or a shower head in the bathroom, the switching handle provided in the mixing faucet is switched to the curran side or the shower side, and is provided in the mixing faucet. A hot water supply system in which hot water is supplied from a hot water supply device by turning a hot water supply handle is known.

  In such a hot water supply system, for example, when the user switches the switching handle to the shower side and turns the hot water supply handle, the hot water sent from the hot water supply device first reaches the mixing faucet from the hot water supply device. The water accumulated in the pipe is pushed out, and then the hot water warmed by the hot water supply device is released from the heat by warming the pipe.

  Therefore, at least the water that is pushed out first is not warm, and the user must be careful not to hit the body with the cold water ejected from the shower head. There was a problem of being uncomfortable because I was bathed.

  As a technique for improving such problems, a system has been proposed in which a three-way valve is provided between a shower head and a mixing faucet to discharge cold water to the outside of the pipe before reaching the shower head (for example, Patent Documents). 1).

Japanese Patent Laid-Open No. 02-304127

  However, in such a conventional system, the cold water discharged to the outside of the pipe before reaching the shower head is discarded without being used, so that there is a problem of promoting wasteful use of water.

  In view of the above-described conventional problems, the present invention reduces cold water coming out and making the user feel uncomfortable when taking out hot water from at least the shower device in a state where hot water is stretched in the bathtub in the bathroom. In addition, an object of the present invention is to provide a bathroom hot-water supply system that does not waste water as in the prior art.

The first aspect of the present invention is
A bathtub for storing hot water supplied from a water heater;
A shower device,
A hot water supply system for supplying hot water from the hot water supply device to the shower device, and a bathroom hot water system,
The bathroom hot water supply system is characterized in that a pipe in the middle of the hot water supply pipe is disposed so as to be able to exchange heat with a surface opposite to the inner wall surface of the bathtub in contact with hot water stored in the bathtub.

The second aspect of the present invention
Switching between whether the hot water from the hot water supply device is supplied to the shower device side via the intermediate pipe or to the shower device side without passing through the intermediate pipe side, A flow path switching member disposed on the upstream side of the pipe;
A bypass pipe connected to the shower device side without passing through the pipe on the way from the flow path switching member;
A bathroom hot-water supply system according to the first aspect of the present invention.

The third aspect of the present invention
With Karan,
A shower / curan switching member disposed on the downstream side of the intermediate pipe, for switching whether to send hot water supplied from the hot water supply device to the curan side or to the shower device side,
A bathroom hot-water supply system according to the first or second aspect of the present invention.

The fourth aspect of the present invention is
A bathtub heat insulating member having a heat insulating layer along a surface opposite to the inner wall surface of the bathtub in contact with hot water stored in the bathtub;
A groove portion is formed on the surface of the bathtub heat insulating member that faces the surface opposite to the inner wall surface of the bathtub and contacts the intermediate pipe with the surface opposite to the inner wall surface of the bathtub. The bathroom hot water supply system according to any one of the first to third aspects of the present invention.

  According to the present invention, in the state where hot water is stretched in a bathtub in a bathroom, at least when hot water is taken out from a shower device, it is possible to reduce the appearance of cold water and make the user feel uncomfortable. It is possible to provide a bathroom hot-water supply system that does not cause unnecessary waste of water.

The schematic diagram of the piping system which shows the schematic structure of the whole bathroom hot-water supply system of one embodiment of this invention Partial cross-sectional schematic diagram of the bathtub for explaining the arrangement state of the heat exchange pipes in the bathroom hot water supply system of the present embodiment Schematic sectional view of the second bathtub for explaining a modification of the present embodiment

  Hereinafter, an embodiment of a bathroom hot water supply system of the present invention will be described with reference to the drawings.

  First, the bathroom hot water supply system 1 of this Embodiment is demonstrated using FIG.

  FIG. 1 is a schematic diagram of a piping system showing an overall schematic configuration of a bathroom hot water supply system 1 of the present embodiment.

  As shown in FIG. 1, the bathroom hot water supply system 1 according to the present embodiment includes a bathtub 10 disposed in the bathroom 100, a bathtub heat insulating member 20 that insulates the bathtub 10, and a mixing provided at an edge 10 a of the bathtub 10. A faucet 30, a shower device 40 attached to the mixing faucet 30, and a currant 50 attached to the mixing faucet 30 are provided.

  Moreover, the bathroom hot water supply system 1 of this Embodiment supplies the hot water boiled with the hot water supply apparatus 200 arrange | positioned outdoors to the opening part 11 provided in the inner wall surface 10b of the bathtub 10, as shown in FIG. Hot water storage pipe 60 for use, hot water supply pipe 70 for supplying hot water boiled in hot water supply apparatus 200 to shower device 40, and a pipe in the middle of hot water supply pipe 70 that is in contact with hot water stored in bathtub 10 A heat exchanging pipe 71 arranged so as to be capable of exchanging heat in contact with the surface 10c opposite to the wall surface 10b, one end side is connected to a water pipe (not shown) side, and the other end side is a mixed faucet 30. And a water supply pipe 80 connected to the.

  The heat exchanging pipe 71 will be further described later with reference to FIG.

  The shower device 40 includes a shower pipe 41 and a shower head 42.

  As shown in FIG. 1, the mixing faucet 30 includes a water supply valve 31 that adjusts the amount of water supplied, and a hot water supply valve 32 that adjusts the amount of hot water supplied from the water heater 200, to which the other end of the water supply pipe 80 is connected. The water whose water supply amount is adjusted with the water supply valve 31 and the hot water whose water supply amount is adjusted with the hot water supply valve 32 are mixed and the mixed water is supplied to the shower pipe 41 of the shower device 40 or the curan 50. And a shower / curan switching valve 33 for switching whether to supply to the shower.

  The water supply valve 31 is provided with a water supply handle (not shown) that can be manually turned by the user, and the hot water supply valve 32 is provided with a hot water supply handle (not shown) that can be turned by the user. The shower / curan switching valve 33 is provided with a shower / curan switching handle (not shown) that can be turned by the user.

  An upstream three-way valve 72 is provided on the upstream side of the heat exchange pipe 71 on the path of the hot water supply pipe 70, and a downstream three-way valve 73 is provided on the downstream side of the heat exchange pipe 71. A bypass pipe 74 is disposed between the upstream three-way valve 72 and the downstream three-way valve 73. The upstream three-way valve 72 and the downstream three-way valve 73 are automatically switched by a command from a remote controller (not shown) arranged in the bathroom 100. This will be further described later.

  The upstream three-way valve 72 of the present embodiment corresponds to an example of the flow path switching member of the present invention.

  In addition, an opening / closing valve 61 for starting or stopping the supply of hot water to the bathtub 10 is provided on the path of the hot water storage pipe 60, and the opening / closing operation is automatically performed according to a command from a remote controller (not shown). It is.

  The hot water supply apparatus 200 is generated when the user operates the hot water supply handle (not shown) of the mixing faucet 30 in the opening direction and switches the shower / currant switching handle (not shown). The flowing water from the hot water supply apparatus 200 to the hot water supply pipe 70 side is detected by a built-in flowing water sensor (not shown), and the gas combustor (not shown) in the hot water supply apparatus 200 is automatically ignited.

  A branch pipe 81 branched on the upstream side of the water supply pipe 80 is connected to the hot water supply apparatus 200 to supply tap water.

  Next, the arrangement state of the heat exchange pipe 71 will be further described with reference to FIG.

  FIG. 2 is a partial cross-sectional schematic view of the bathtub 10 for explaining the arrangement state of the heat exchange pipe 71.

  In the present embodiment, the heat exchange pipe 71 is a copper pipe having a high thermal conductivity. And as for the said heat exchange piping 71, the metal surface is exposed, and as shown in FIG. 1, FIG. 2, the other side of the inner wall surface 10b of the bathtub 10 which contacts the hot water 101 stored in the bathtub 10 is shown. In a state where the metal surface is in contact with the surface 10c of the tub 10, the surface of the tub 10 is spirally wound from the lower side toward the upper side.

  That is, the upstream hot water supply pipe 70a that passes through the upstream three-way valve 72 is connected to an inlet side pipe 71a that is wound around the lower side of the bathtub 10 in the middle of the piping path. The downstream hot water supply pipe 70 b connected to the outlet side pipe 71 b wound around the upper side of the bathtub 10 is connected to the hot water supply valve 32 via the downstream three-way valve 73.

  The configuration including the upstream hot water supply pipe 70a, the downstream hot water supply pipe 70b, and the heat exchange pipe 71 of the present embodiment is an example of the hot water supply pipe of the present invention, and the heat exchange pipe 71 of the present embodiment includes This corresponds to an example of piping in the middle of the hot water supply piping of the present invention.

  Further, the bathtub heat insulating member 20 surrounds the bathtub 10 from the outer peripheral side, and is made of a foamed polystyrene previously molded into a box shape so as to be in contact with the surface 10c on the opposite side of the inner wall surface 10b of the bathtub 10 except for a groove portion 21 described later. It is a molded member and is configured to make it difficult to cool the hot water in the bathtub 10 and to make sure that the metal surface of the heat exchanging pipe 71 is in contact with the surface 10c on the opposite side of the inner wall surface 10b of the bathtub 10 for positioning. .

  That is, on the inner peripheral surface of the bathtub heat insulating member 20, there is a groove portion 21 having a depth of the same size as the outer diameter of the heat exchange pipe 71 and having a width that can accommodate the heat exchange pipe 71. It is formed in a spiral shape from the lower side of the bathtub 10 toward the upper side. The heat exchanging pipe 71 accommodated in the groove portion 21 is brought into contact with the bottom surface portion 21a of the groove portion 21 and reliably contacts the surface 10c opposite to the inner wall surface 10b of the bathtub 10.

  From the above, the heat exchanging pipe 71 can be reliably brought into contact with the surface 10c on the opposite side of the inner wall surface 10b of the bathtub 10 with a simple configuration. High heat exchange efficiency with hot water can be realized.

  Next, operation | movement of the bathroom hot-water supply system 1 of this Embodiment is mainly demonstrated using FIG.

  Here, in the winter season, a case where hot water is filled in the bathtub 10 and then the shower device 40 is used will be described.

  In the present embodiment, a water temperature sensor (not shown) for detecting the temperature of the water supplied through the water supply pipe 80 is provided, and the temperature detected by the water temperature sensor in the remote controller (not shown) is equal to or lower than a predetermined temperature. In the case where it is determined, the command is issued from the remote controller to the upstream three-way valve 72 and the downstream three-way valve 73, and the bypass pipe 74 is automatically closed.

  Therefore, in the winter season, the water temperature is lower than the predetermined temperature, so that the bypass pipe 74 is automatically closed by the above-described configuration, and the hot water from the hot water supply apparatus 200 does not pass through the bypass pipe 74, and the upstream hot water supply pipe 70 a It will be supplied to the mixed faucet 30 side via the replacement pipe 71 and the downstream hot water supply pipe 70b.

  A user first operates a hot water filling switch (not shown) provided in a remote controller (not shown) to fill the bathtub 10 with hot water.

  That is, when the hot water filling switch is turned on, the hot water supply device 200 is automatically ignited by the command from the remote controller and the on-off valve 61 is opened, and the hot water from the hot water supply device 200 is opened via the hot water storage pipe 60. Supplied from the section 11 into the bathtub 10. When hot water has accumulated up to a preset hot water surface, the hot water filling operation is automatically stopped and the on-off valve 61 is closed.

  Thereby, the heat from the hot water stored in the bathtub 10 is changed to the inner wall surface 10b of the bathtub 10 with respect to the cold water already stored in the heat exchanging pipe 71 before the hot water filling in the bathtub 10 is performed. Since heat conduction is performed via the opposite surface 10c and the copper metal piping wall, the temperature of the cold water eventually approaches the hot water stored in the bathtub 10 and is kept warm.

  Next, after a while after completion of hot water filling, the user enters the bathroom 100 and first uses the shower device 40.

  That is, the user supplies the hot water supply handle (not shown) connected to the hot water supply valve 32 and the water supply connected to the water supply valve 31 so that the amount and temperature of the hot water ejected from the shower head 42 are in a desired state. A handle (not shown) is appropriately adjusted to switch the shower / curan switching handle (not shown) connected to the shower / curan switching valve 33 to the shower side.

  As a result, first, as described above, a large amount of hot water stored and kept in the heat exchanging pipe 71 is supplied to the mixed faucet 30 side together with a small amount of cold water stored in the downstream hot water supply pipe 70b and dissipated. And ejected from the shower head 42.

  At the same time, the generation of flowing water to the hot water supply pipe 70 side is detected by a flowing water sensor (not shown) built in the hot water supply device 200, and the gas combustor (not shown) in the hot water supply device 200 is automatically ignited. Thus, the hot water newly boiled is sent out from the hot water supply apparatus 200 to the hot water supply pipe 70.

  Then, the first hot water that is newly boiled is sent out at a temperature lower than a predetermined temperature, and while passing through the upstream hot water supply pipe 70a, the heat further dissipates and the temperature decreases, but passes through the heat exchange pipe 71. In the meantime, the temperature rises due to heat conduction from the hot water stored in the bathtub 10, and warm hot water is jetted from the shower head 42 through the downstream hot water supply pipe 70 b, the mixing tap 30. Eventually, when the hot water temperature fed from the hot water supply apparatus 200 rises to a predetermined temperature, stable warm hot water is ejected from the shower head 42.

  Thereby, when the user uses the shower device 40, a small amount of cold water stored in the downstream hot water supply pipe 70b and dissipated from the shower head 42 is instantaneously ejected, but in the heat exchange pipe 71 The hot water that has been stored and kept warm from the beginning almost erupts, preventing the user from feeling uncomfortable due to the large amount of cold water stored in the hot water supply piping as in the conventional system. I can do it.

  Further, in the conventional system, until the hot water supply pipe is warmed, the cold water is thrown away so as not to be exposed to the body, but the bathroom hot water supply system 1 according to the present embodiment is discarded. According to this, waste of water as in the conventional system can be prevented.

  In addition, since the first low-temperature hot water that has been newly boiled passes through the heat exchanging pipe 71, the temperature rises due to heat conduction from the hot water stored in the bathtub 10. Rise time can be shortened.

  Next, the case where the shower apparatus 40 is used without filling the bathtub 10 with hot water in the summer will be described.

  In the summer, the upstream three-way valve 72 and the downstream three-way valve 73 are operated by a command from a remote controller (not shown) that detects that the water temperature is higher than a predetermined temperature, and water flows to the heat exchange pipe 71 side. The path is automatically closed, and hot water from the hot water supply device 200 passes through the bypass pipe 74 from the upstream three-way valve 72 and is supplied to the mixed water faucet 30 through the downstream three-way valve 73. .

  Here, even if the bathtub 10 is not filled with hot water, if the hot water from the hot water supply device 200 is configured to pass through the heat exchange pipe 71 side, the hot water is ejected from the shower head 42. Time is longer than before.

  On the other hand, according to the bathroom hot water supply system 1 of the present embodiment, since it automatically switches to the bypass pipe 74 in the summer, the time until hot water is ejected from the shower head 42 is about the same as the conventional time. become.

  In the above description, the case where the shower / curan switching valve 33 of the mixing faucet 30 is switched to the shower device 40 side has been described. However, the present invention is not limited to this. Even in this case, the same effect as described above is exhibited.

  In addition, in the said embodiment, although the structure which winds the heat exchange piping 71 spirally around the bathtub 10 toward the upper part side from the lower part side of the bathtub 10 was not restricted to this, For example, FIG. As shown, in the second bathtub 110, in addition to the path wound spirally from the lower side toward the upper side, the second heat exchange pipe 171 provided with a path arranged on the spiral also on the bottom side is used. It may be. Here, FIG. 3 is a schematic cross-sectional view of the second bathtub 110 for explaining a modification of the above embodiment.

  Moreover, in the said embodiment, it was set as the structure which uses the groove part 21 previously provided in the bathtub heat insulation member 20, and pressed the heat exchange piping 71 against the surface 10c of the bathtub 10, and positioned, but it is not restricted to this. For example, as shown in FIG. 3, the wall of the second bathtub 110 has a hollow structure having a space portion therein, and a second heat exchange pipe 171 is previously provided in the space portion, opposite to the inner wall surface 110 b of the second bathtub 110. It is good also as a structure which forms the 2nd bathtub heat insulation member 120 by fixing by welding etc. in the state contacted to the side surface 110c, and injecting a foaming material into the space part, and making it foam after that.

  Moreover, the bathroom hot-water supply system 1 of the said embodiment may be applied to a unit bath, and even in that case, the same effect as the above is exhibited.

  Moreover, in the said embodiment, although it does not mention in particular about additional cooking, the structure which added the additional cooking function may be sufficient.

  In the above embodiment, the upstream three-way valve 72 and the downstream three-way valve 73 are switched in order to switch between flowing hot water from the hot water supply apparatus 200 to the bypass pipe 74 side or flowing to the heat exchange pipe 71 side. Although the provided structure was demonstrated, it is not restricted to this, For example, it may replace with a three-way valve and another switching member may be sufficient.

  Further, in the above-described embodiment, the configuration has been described in which hot water is discharged from the beginning and wasteful water can be prevented even when switching to either the shower device 40 or the currant 50. It is good also as a structure which exhibits the said effect only when using the apparatus 40. FIG.

  In the said embodiment, although the case where copper piping was used as the heat exchange piping 71 and the 2nd heat exchange piping 171 was demonstrated, it is not restricted to this, For example, if it is a material with high heat conductivity, it will be other than copper. Piping may be comprised with a metal, and piping comprised with materials other than a metal may be sufficient.

  Moreover, in the said embodiment, when the upstream hot water supply piping 70a, the heat exchange piping 71, and the downstream hot water supply piping 70b are each comprised as a separate member, and each is connected in the case of construction work However, the present invention is not limited to this, and for example, these may be configured as seamless pipes from the upstream hot water supply pipe to the downstream hot water supply pipe.

  Moreover, in the said embodiment, it is the structure which performs heat conduction by pressing the heat exchange piping 71 against the surface 10c of the bathtub 10 using the bottom face part 21a of the groove part 21 provided in the bathtub heat insulation member 20 previously. However, the present invention is not limited to this. For example, a configuration in which a filler or an adhesive having a good thermal conductivity is injected into the gap between the groove 21 and the heat exchanging pipe 71 may be used.

  According to the bathroom hot water supply system of the present invention, when hot water is taken out from at least the shower head in a state where hot water is stretched in the bathtub in the bathroom, it is reduced that cold water comes out and the user feels uncomfortable. It is effective as a bathroom hot-water supply system because it exhibits the effect of not wasting water as in the prior art.

DESCRIPTION OF SYMBOLS 10 Bathtub 10a Edge 10b Inner wall surface 10c Opposite side surface 20 Bathtub heat insulating member 30 Mixer faucet 40 Shower device 50 Callan (faucet)
60 Hot Water Storage Pipe 70 Hot Water Supply Pipe 70a Upstream Hot Water Supply Pipe 70b Downstream Hot Water Supply Pipe 71 Heat Exchange Pipe 72 Upstream Three-way Valve 73 Downstream Three-way Valve 74 Bypass Pipe 80 Water Supply Pipe 81 Branch Pipe

Claims (4)

A bathtub for storing hot water supplied from a water heater;
A shower device,
A hot water supply system for supplying hot water from the hot water supply device to the shower device, and a bathroom hot water system,
The bathroom hot water supply system, wherein a pipe in the middle of the hot water supply pipe is arranged to be able to exchange heat with a surface opposite to the inner wall surface of the bathtub in contact with the hot water stored in the bathtub. Switching between whether the hot water from the hot water supply device is supplied to the shower device side via the intermediate pipe or to the shower device side without passing through the intermediate pipe side, A flow path switching member disposed on the upstream side of the pipe;
A bypass pipe connected to the shower device side without passing through the pipe on the way from the flow path switching member;
The bathroom hot water supply system according to claim 1, further comprising: With Karan,
A shower / curan switching member disposed on the downstream side of the intermediate pipe, for switching whether to send hot water supplied from the hot water supply device to the curan side or to the shower device side,
The bathroom hot-water supply system according to claim 1 or 2, further comprising: A bathtub heat insulating member having a heat insulating layer along a surface opposite to the inner wall surface of the bathtub in contact with hot water stored in the bathtub;
A groove portion is formed on the surface of the bathtub heat insulating member that faces the surface opposite to the inner wall surface of the bathtub and contacts the intermediate pipe with the surface opposite to the inner wall surface of the bathtub. The bathroom hot-water supply system according to claim 1, wherein the bathroom hot-water supply system is provided.

Images