JPH1119170A - Sauna system for bathroom - Google Patents

Abstract

PROBLEM TO BE SOLVED: To sufficiently recover warm water without containing the mist of warm water too much in heated air for sauna even when forming this heated air by spraying mist-state warm water in the air and to unnecessitate any large fan for heating air. SOLUTION: On the upside of a hairpin-shaped duct 10, a nozzle 20 is provided for spraying mist-state warm water J at high speed, a 1st liquid pool 110a for mist recovery is formed, and a lot of pores Y for the downflow of recovered warm water on the downside of the duct 10 is formed on the bottom of this 1st liquid pool 110a. Then, a suction part 121a for air K is provided on one end side of a bathtub 2 in lengthwise direction, a discharge part 111a for heated air L is provided on the other end side, and these parts are connected to an intake opening part 61 and a discharge opening part 60 of an apron 3. Besides, on the downside of the duct 10, a 2nd liquid pool 120a is formed as well.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bathroom sauna apparatus for heating a bathroom by injecting hot water.

[0002]

2. Description of the Related Art As a bathroom sauna device, for example, there is a device that raises the temperature in a bathroom by injecting hot water into the bathroom in a mist form. However, in such a device, since mist of hot water having a large particle diameter is also sprayed, these touch the body,
In addition to the problem of being physically unpleasant, there is also a problem that the hot water is used unnecessarily and resources are wasted.

For this reason, a bathroom sauna apparatus has been proposed which solves the above problem by using a fan and a heat exchange promoting member (Japanese Utility Model Laid-Open No. 6-63103). In this bathroom sauna apparatus, as shown in FIG. 17, hot water N is jetted onto a heat exchange promoting member 201 having fins attached around the pipe to form a heated atmosphere in the housing 200. The air P is drawn into the housing 200 by the fan 202, thereby heating the air P to form the heated air Q, and then blowing the heated air Q into the bathroom. The hot water N after the heat exchange is collected in a hot water receiver 203 and then discharged to a pit.

In this bathroom sauna apparatus, since the heated air Q does not contain a large mist of hot water N, the heated air Q
It has the advantage that it has a good feeling of contact with the body and can be bathed in the sauna in a comfortable state.

[0005]

However, the above-mentioned conventional bathroom sauna apparatus requires a large fan 202 for heating the air, which leads to an increase in the size and cost of the apparatus. There was a problem. In this bathroom sauna apparatus, the hot water N after heat exchange is not reused.

In view of the above, the present invention does not include a large mist of hot water in the heated air even when hot air for a sauna is formed by injecting hot water into the air in the form of a mist. It is an object of the present invention to provide a bathroom sauna apparatus that can effectively use resources by collecting hot water and that does not require a large fan for heating air.

[0007]

According to a first aspect of the present invention, there is provided a nozzle for jetting hot water in a mist form at a high speed, and the nozzle is provided inside, and the hot water from the nozzle is provided at one end. A suction unit for suctioning surrounding air is formed by utilizing a negative pressure generated by the ejection of the air, and a discharge unit for discharging heated air composed of a mixture of the sucked air and hot water mist is provided on the other end side. A bathroom sauna device having a formed duct, wherein the heated air is jetted into the bathroom space, and the air in the bathroom space is sucked into the duct to heat the bathroom space. Is placed in a closed space below the rim of the bathtub at one end in the longitudinal direction of the bathtub installed on the waterproof floor pan, and an apron covering the side of the bathtub is provided with an opening for discharging heated air. When,
An air intake opening is formed, and the suction part side and the discharge part side are formed to be bent obliquely upward in a state where the ducts are vertically overlapped in a hairpin shape. With the bent portion positioned on the back side of the closed space, this duct is arranged so as to substantially follow the waterproof floor pan, and the suction portion and the discharge portion are connected to the apron intake opening and the discharge opening. And further, a nozzle is provided on the upstream side on the upper side of the duct, and on the upper side of this duct,
A concave first reservoir is formed to allow hot water mist adhering to the inner surface of the duct to flow therein, and the recovered hot water in the first reservoir is provided on the lower side of the first reservoir at the bottom of the first reservoir. A large number of small holes are formed in the duct, and a second reservoir for collecting collected hot water flowing down from the first reservoir is formed below the duct.

In the present invention, the air in the bathroom space is sucked into the duct by the energy of high-speed injection of hot water from the nozzle in a mist form in the duct, and the heated air in which the air and the mist of the hot water are mixed is heated in the bathroom. Squirted into the space. In this case, the air sucked into the duct is heated by the recovered hot water flowing down from the first reservoir and is heated by the mist of the hot water injected from the nozzle, and the mist and the heated water containing the saturated steam are contained. It is in the state of air. When the heated air mixes with the air in the bathroom space to lower the temperature, a part of the water vapor in the heated air is condensed to form minute mist, and the latent heat generated at this time causes the discharge of the latent heat in the bathroom space. Is further heated.

On the other hand, the mist having a relatively large particle diameter in the heated air generated during the injection of the hot water adheres to the inner surface of the duct while moving on the upper side of the duct, or may be attached to the bent portion of the duct. After adhering, it flows down along the inner surface of the duct and flows into the first liquid reservoir. Then, the collected hot water in the first liquid reservoir flows down from a number of small holes to the lower side of the duct, and is then collected in the second liquid reservoir. When the air flows from the upper side to the lower side of the duct, part of the mist of the warm water having a large particle diameter is also poured into the second liquid reservoir on the lower side of the duct.

According to a second aspect of the present invention, in the case of the first aspect, the nozzle is disposed near a hairpin-shaped bent portion of the duct, and the nozzle is arranged from a lower side to an upper side of the duct. The air is flowing.

In this invention, the air sucked into the duct passes through the lower part of the duct through which the recovered hot water flows, moves from the hairpin-shaped bent part to the upper part of the duct, and then mixes with the mist from the nozzle. Then, it is squirted into the bathroom space. In this case, the air is first heated by the recovered hot water flowing down, and then heated by the mist of hot water injected from a nozzle having a higher temperature than the recovered hot water.

[0012] According to a third aspect of the present invention, in the case of the first aspect, the discharge portion side in the duct is provided with:
An air heater that heats heated air with hot water before supply to the nozzle is provided.

According to the present invention, the heated air is heated by the hot water in the air heater supplied to the nozzle.
Since the amount of heat given to the heated air decreases as the temperature of the hot water decreases, it seems that the air heater does not play any role at first glance. However, if the temperature of the hot water supplied to the nozzles decreases, the temperature of the recovered hot water finally collected in the second reservoir also decreases, and the thermal efficiency of the sauna apparatus increases accordingly. Further, if the flow of the heated air and the flow of the hot water in the air heater are made to flow in opposite directions, the thermal efficiency of the sauna apparatus can be increased accordingly.

According to a fourth aspect of the present invention, in the case of the first aspect, the nozzle is provided with an empty conical nozzle for injecting hot water as a radial mist flow along a substantially conical surface of the duct. That is, a plurality is provided side by side in the longitudinal direction.

According to the present invention, a large number of hollow conical nozzles capable of generating a mist having a small particle diameter are used to reduce the mist particle diameter of the mist stream injected from the nozzle and to reduce the contact time between the mist stream and air. It is long. If the mist particle size becomes smaller, the contact area between the mist and the air increases, and the mist gives sufficient kinetic energy and heat energy to the air. Further, if the contact time between the mist flow and the air becomes longer, the same effect as described above is further obtained.

According to a fifth aspect of the present invention, in the case of the first aspect, the first and second liquid reservoirs include a hot water recovery reservoir on an inner side of the duct and a suction portion of the duct. Alternatively, it is divided into a drainage reservoir on the discharge section side, and a number of small holes are formed at the bottom of the hot water collection reservoir of the first liquid reservoir.

According to the present invention, there is a possibility that drainage during bathing flows into the discharge or suction side of the duct through the discharge opening or intake opening of the apron, and the collected hot water becomes dirty. Therefore, the liquid reservoir is divided into a drainage reservoir on the discharge and suction side where washing water may flow in, and a hot water recovery reservoir in which only hot water mist or collected hot water flows. In addition to performing heat exchange with the hot water, clean recovered hot water can be reliably recovered.

According to a sixth aspect of the present invention, in the case of the fifth aspect, a plurality of horizontal guides for vertically guiding heated air and air to the discharge portion and the suction portion of the duct, respectively. A plate is attached.

According to the present invention, the drainage at the time of bathing scattered in the duct can be dropped by the plurality of horizontal guide plates near the discharge part and the suction part of the duct. For this reason,
The sump drain can be made smaller and the hot water collection sump can be made larger.

According to a seventh aspect of the present invention, in the case of the first aspect, the second reservoir or the second reservoir is provided.
And a recovery pump for transferring the recovered hot water in the hot water collection reservoir to the bathtub side.

In the present invention, the recovered hot water in the second liquid reservoir or the like is stored in the bathtub by the recovery pump, so that the recovered hot water can be easily used for bathing, and the recovered hot water can be easily used. Can be planned.

According to an eighth aspect of the present invention, in the case of the first aspect, a pressurizing pump for pressurizing the hot water is provided in a hot water supply facility for supplying hot water to a nozzle. It is.

In the present invention, since the pressure of the hot water supplied to the nozzle can be sufficiently increased, the particle size of the mist sprayed from the nozzle can be reduced, and the flow rate of the hot water supplied to the nozzle can be easily controlled. .

According to a ninth aspect of the present invention, in the case of the first aspect, a small drying fan for drying the inside of the duct is provided upstream of the nozzle of the duct. .

According to the present invention, after the injection of hot water from the nozzle is completed (after the sauna is completed), the drying fan can be operated to sufficiently dry the inside of the duct. If the drying fan is operated during use of the sauna, the drying fan can be used as an auxiliary device for sucking air into the duct.

According to the tenth aspect of the present invention, in the case of the first aspect, the duct is moved between the washing floor side of the waterproof floor pan and the closed space where the duct is installed. That is, a guide rail is provided.

According to the present invention, in order to install the duct in the closed space next to the bathtub, after removing the apron, the duct may be pushed into the closed space along the guide rail from the washing area side. In order to take out the apron from the closed space, after removing the apron, this duct may be drawn out from the closed space along the guide rail to the washing place side.

According to an eleventh aspect of the present invention, there is provided a nozzle for jetting high-speed hot water in a mist state, and a negative pressure generated by jetting hot water from the nozzle on one end side while the nozzle is installed inside. And a duct on the other end side of which is formed a discharge section of heated air for heating by mixing the sucked air with a mist of warm water. A sauna device for a bathroom that blows heated air into a bathroom space, sucks air in the bathroom space into a duct, and heats the bathroom space.
Two heated air outlets are placed on the apron covering the sides of the bath tub, one each in the closed space below the rim of the bath tub, at both ends in the longitudinal direction of the bath tub installed on the waterproof floor pan. And the suction section side and the discharge section side are bent obliquely upward with the duct opening and the two air intake openings formed, and the ducts are vertically overlapped in a hairpin shape. With the hairpin-shaped bent part positioned on the back side of the closed space, this duct is arranged so as to be approximately along the waterproof floor pan, and the suction part and the discharge part are formed in the apron intake opening. And a discharge opening, and further, a nozzle is provided on the upstream side of the upper part of the duct, and a concave second part for flowing the mist of hot water adhered to the inner surface of the duct into the upper part of the duct. 1 to form a liquid reservoir and First, at the bottom of the reservoir, a number of small holes are formed to allow the recovered hot water in the first reservoir to flow down to the lower side of the duct, and further, to flow down from the first reservoir to the lower side of the duct. That is, a second liquid reservoir for collecting the collected hot water is formed.

According to the present invention, since the heated air can be blown into the bathroom space from both sides in the longitudinal direction of the bathtub, the heating of the bathroom space can be speeded up.

According to a twelfth aspect of the present invention, in the case of the eleventh aspect, the recovered hot water in the second liquid reservoir formed on the lower side of the one duct is pressurized,
Another point is that a recovered hot water pressurizing pump for supplying to the nozzle on the other duct side is provided.

According to the present invention, the recovered hot water in the second reservoir of one duct can be supplied to the nozzle of the other duct, so that the residual heat of the recovered hot water is more fully utilized and the thermal efficiency of the sauna apparatus is improved. Can be planned.

[0032]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 2 shows an external appearance and the like of a bathroom provided with a sauna device according to an embodiment of the present invention.

In FIG. 2, the bathroom is formed from a bathroom unit which is a prefabricated bathroom, and a bathtub 2 is installed on a lower bathtub installation section 1a on the rear (rear) side of the waterproof floor pan 1; The washing area A is formed on the washing area 1b, which is one step higher (on the front side). In addition, the wall panel 4 is installed on the wall mounting portion 1c formed on the outer peripheral portion of the waterproof floor pan 1, and the bathtub installation portion 1a and the washing place portion 1 of the waterproof floor pan 1 are provided.
and a rim 2b on the front side of the bathtub 2
An apron 3 that covers the side of the washing area A of the bathtub 2 is provided between the apron 3.

As shown in FIG. 2, the tub 2 is formed with a rim portion 2b extending horizontally outward at the upper end side of the concave water reservoir portion 2a, and below the rim portion 2b, A closed space V surrounded by the waterproof floor pan 1, the apron 3, and the wall panel 4 is formed. The apron 3 is located below the front rim 2b-1 facing the washing area A in the rim 2b.
The main part of the sauna device 5 is installed in the left closed space V1 below the left rim portion 2b-2 at one longitudinal end of the bathtub 2.

The sauna device 5 is, as shown in FIG.
It is composed of a duct 10, a nozzle 20, a hot water supply facility 30, an air heater 40, a hot water resupply facility 50, a hot water utilization facility 60, and the like. Utilizing the negative pressure generated by the injection, the air K in the bathroom space W is taken into the duct 10 and the heated air L composed of a mixture of the air K and the mist of the hot water J is injected into the bathroom space W. Thus, the interior of the bathroom space W is heated.

The duct 10 is made of, for example, a resin material or a metal plate. As shown in FIG.
The bathtub 2 is installed in the left closed space V1 below the left rim portion 2b-2 while being supported by the waterproof floor pan 1 and the like. The duct 10 is, for example, a long duct having a rectangular cross section, which is vertically overlapped in a hairpin shape, with the end side bent obliquely upward, and the upper duct 11 and the lower duct 12 Are positioned forward along the bottom of the waterproof floor pan 1 in a state where the bending duct 13 connecting the left and right sides is arranged at the rear (rear) side of the left closed space V1.
The ends of the upper duct 11 and the lower duct 12 are connected to the discharge opening 70 and the intake opening 71 of the apron 3.
A first horizontal guide plate 14 and a second horizontal guide plate 15 are attached to the ends of the upper duct 11 and the lower duct 12, respectively.

A vibration damping material (for example, a metal plate) for preventing the vibration of the duct 10 is attached to the outer surface of the duct 10, and the outer surface of the bathtub 2 and the like around the duct 10 is Sound absorbing material is installed.

As shown in FIG. 1, the upper duct 11 comprises a horizontal portion 110 connected to the bent duct 13 and an inclined portion 111 connected to the horizontal portion 110. The inclined portion 111 has a discharge portion 1 for the heated air L at one end.
11a is formed, and the discharge portion 111a
A flange portion 111b formed therearound is attached around the discharge opening 60 of the apron 3 by a screw or the like. A plurality of first horizontal guide plates 14 are attached to the inclined portion 111 at a predetermined pitch in the vertical direction on the side of the discharge portion 111a, and by rotating the first horizontal guide plates 14, The blowing direction of the heated air L can be changed to the vertical direction of the washing place A.

In the horizontal portion 110, a concave first reservoir 110a into which the mist of the hot water J attached to the inner surface of the upper duct 11 flows is formed at the lowermost position on the bottom side. The first liquid reservoir 110a is separated from the hot water recovery reservoir S1 on the side of the bent duct 13 by the partition plate T1 and the inclined portion 1
It is divided into a drain reservoir S2 on the eleventh side. A large number of small holes Y reaching the lower duct 12 are formed at a predetermined pitch at the bottom of the hot water collecting reservoir S1, and the collected hot water M1 in the hot water collecting reservoir N1 passes through the small holes Y and passes through the lower portion. It flows down into the duct 12.

As shown in FIG. 1, the lower duct 12 includes a horizontal portion 120 connected to the bent duct 13 and an inclined portion 121 connected to the horizontal portion 120, and is formed in parallel with the upper duct 11. Have been. Bevel 1
Reference numeral 21 has a suction portion 121a for air K formed on one end side, and a flange portion 121b formed around the suction portion 121a is attached around the intake opening 61 of the apron 3 by a screw or the like. . A plurality of second horizontal guide plates 15 are mounted at a predetermined pitch in the up-down direction in the suction portion 121a of the inclined portion 121. By rotating the second horizontal guide plates 15,
The suction direction of the air K in the washing place A can be changed in the vertical direction.

The horizontal portion 120 of the lower duct 12 is provided in proximity to the waterproof floor pan 1, and at the lowermost position on the lower surface side, the recovered hot water M 1 flowing down from the upper duct 11 is provided.
(Hereinafter, the recovered hot water M1 after flowing down is referred to as flowing down hot water M2)
A second reservoir 120a having a concave shape for collecting the liquid is formed.
The second reservoir 120a is divided by a partition plate T2 into a hot water recovery reservoir S3 on the bent duct 13 side and a drain reservoir S4 on the inclined portion 121 side.

Here, the apron 3 discharge opening 60
Has a plurality of vertical guide plates 60a attached at a predetermined pitch in the left-right direction, as shown in FIG. 2, and by rotating the guide plates 60a, the blowing direction of the heated air L The direction can be changed.

The nozzle 20 injects the hot water J into the duct 10 at high speed in the form of a mist, and is mounted on the upstream side of the upper duct 11. This nozzle 20 is shown in FIG.
As shown in FIG. 4, a plurality of empty conical nozzles 22 are attached to the hot water header 21 side by side in the longitudinal direction of the duct 10. This empty cone nozzle 22
As shown in FIG. 5A, the hot water J is injected as a radial mist flow J1 along a substantially conical surface, and is well known. This empty conical nozzle 22
As shown in FIG. 5B, compared with the conical nozzle 23 that forms the mist flow J1 also inside the conical surface, it has an advantage that the particle size of the mist can be reduced. Compared with the conical nozzle 23, the mist flow J1 has a short contact time with the air K. In addition, the particle size of the mist generally decreases as the amount of hot water J injected from one nozzle decreases.

Therefore, the nozzle 20 uses the empty conical nozzle 22 and reduces the injection amount of the hot water J from one empty conical nozzle 22 by using a plurality of the empty conical nozzles. By making the mist particle diameter of the injected hot water J sufficiently small, and simultaneously injecting the hot water J from a plurality of hollow cone nozzles 22 arranged side by side,
The shape of the mist flow J1 can be approximated to the shape of the mist flow J1 of the charged conical nozzle 23, and the contact time between the mist J1 and the air K can be kept relatively long.

The reason why the air K can be sucked into the duct 10 by the mist flow J1 of the hot water J injected at a high speed from the nozzle 20 is the same as that by the ejector. Kinetic energy is given to the air, and the air moves in the duct 10 to generate a negative pressure around the suction portion 121a of the duct 10. In this case, if the particle size of the mist is small, the contact area between the mist flow J1 and the air K increases, so that the energy of the mist flow J1 is sufficiently transmitted to the air K, and more air K is ducted. 1
It can be sucked within zero. In addition, if the contact time between the mist flow J1 and the air K is long, the energy of the mist flow J1 is sufficiently transmitted to the air K side, so that much air K can be sucked into the duct 10.

If the particle size of the mist is reduced and the contact area between the mist flow J1 and the air K is increased, the amount of heat transfer from the mist to the air K is also increased, and the air K is sufficiently heated accordingly. When the contact time between the mist flow J1 and the air K becomes longer, the amount of heat transfer from the mist to the air K also increases.

The hot water supply equipment 30 supplies a required amount of hot water J having a predetermined pressure and a predetermined temperature to the nozzle 20. As shown in FIG. 6, a hot water supply pipe 31 and a hot water supply pipe 31 are provided in the hot water supply pipe 31. Installed, a pressurizing pump 32a, a float switch 32b, a solenoid valve 32c, a hot water thermistor 32d,
It comprises a strainer 32e, a water stopcock 32f, a thermistor 33 for air, and a control panel 34. In addition,
The hot water supply facility 30 is mainly installed in the closed space V below the front rim portion 2b-1 of the bathtub 2.

The hot water supply pipe 31 has one end connected to the header 21 of the nozzle 20 and the other end connected to a water heater (not shown) for heating tap water.
Hot water J of about 0 to 70 ° C. is supplied to the nozzle 20. The pressurizing pump 32a supplies the nozzle 20 with 1 kg / cm
It is for supplying hot water J at a pressure of ² G or more,
The flow rate can be controlled by changing the rotation speed of the impeller. The float switch 32b detects whether or not there is hot water J at the inlet of the pressurizing pump 32a. The electromagnetic valve 32c is for cutting off the flow of the hot water J in the hot water supply pipe 31. This is not necessary when the pressure pump 32a self-locks. Thermistor for hot water 3
2d is for detecting the temperature of the hot water J, the strainer 32e is for dust removal, and the water stopcock 32f is for the strainer 32e.
The thermistor for air 33 is for detecting the temperature of the air K in the suction part 11a of the duct 10.

The control panel 34 includes a pressurizing pump 32a, a float switch 32b, a solenoid valve 32c, and a hot water thermistor 3.
It is electrically connected to the 2d and the air thermistor 33 and includes an operation switch, an operation lamp, necessary display units, control parts, and the like. The control panel 34 obtains signals from the air thermistor 33 and the hot water thermistor 32d, controls the amount of the hot water J discharged from the pressurizing pump 32a to the nozzle 20, and controls the inside of the bathroom space W to a desired value. In addition to controlling the temperature, the signal from the float switch 32b is obtained to prevent the pressure pump 32a from running idle. It is assumed that the control panel 34 is installed in an easy-to-operate place in the bathroom.

As shown in FIG. 1, the air heater 40 is installed in the inclined portion 111 of the upper duct 11, and the heated air L in the duct 10 is supplied by the hot water J before being supplied to the nozzle 20. For heating. This air heel
The tar 40 has a plurality of fins 42 attached around a pipe 41, and the inlet / outlet of the pipe 41 is connected to the hot water supply pipe 31 on the outlet side of the pressure pump 32a. In this case, the fins 42 are provided along the flow of the heated air L in the duct 10.

The hot water utilization equipment 50 includes a second reservoir 120a.
This is for reusing the downflowing hot water M2 stored in the hot water recovery reservoir S3, as shown in FIG. 6, a recovery pipe 51 and a recovery pump 5 installed in the recovery pipe 51.
2a, recovered hot water thermistor 52b, and three-way valve 52c
, A reuse pipe 53, a reuse pump 54 a provided in the reuse pipe 53, a coupler 54 b with a check valve, and a control panel 34. The hot water utilization equipment 50 is also installed mainly in the closed space V below the front rim portion 2b-1 of the bathtub 2.

The recovery pipe 51 connects the hot water recovery reservoir S3 of the second liquid reservoir 120a to the hot water reservoir 2a of the bathtub 2. The recovery pump 52a supplies the hot water M2 flowing down in the hot water recovery reservoir S3 to the bathtub 2. Is sent to the hot water reservoir 2a. The recovered hot water thermistor 52b detects the temperature of the flowing hot water M2, and the three-way valve 52c allows the flowing hot water M2 to be discharged to the drain pit side of the bathroom without being sent to the bathtub 2 side.

The reusable pipe 53 has one end communicating with the bottom of the tub 2a of the bathtub 2 and the other end positioned beside the apron 3 in the closed space V. The reuse pump 54a is connected to the bathtub 2
The hose 54 is provided for transferring the hot water M2 flowing down inside the hose, and the coupler 54b with a check valve is attached to the end of the reusable pipe 53, for example, a hose provided with a connector corresponding to the coupler 54b with a check valve. And the reuse pipe 53 are connected with one touch. The control panel 34 is used in common with the hot water supply equipment 30, and is electrically connected to the recovery pump 52a, the recovered hot water thermistor 52b, the three-way valve 52c, and the recycle pump 54a. belongs to.

The coupler with check valve 54b is arranged close to the inside of the apron 3 and can be accessed by opening the open / close lid provided on the apron 3.

Next, the operation of the sauna device 5 will be described. When the electromagnetic valve 32c of the hot water supply facility 30 is opened and the pressurizing pump 32a is operated, hot water J of a predetermined temperature and a predetermined pressure passes through the hot water supply pipe 31 and the air heater 40,
High-speed mist is injected into the upper duct 11 of the duct 10 from the nozzle 20. The mist flow J1 of the hot water J moves the air in the duct 10 to the discharge unit 111a side.
A negative pressure is generated on the suction part 121a side of the duct 10, and air is sucked into the duct 10 from around the suction part 121a. Therefore, the mist of the warm water J mixes with the air sucked into the duct 10 and flows through the duct 10 while applying heat to the air.
Through the discharge part 111a of the apron 3 and the discharge opening part 60 of the apron 3, it is jetted into the bathroom space W.

When the hot water J is jetted from the nozzle 20, the mist of the hot water J having a large particle diameter adheres to the inner surface of the upper duct 11, and serves as the recovered hot water M1 in the first water reservoir 110a as the recovered hot water M1. Flow in. And
The collected hot water M1 is supplied to a small hole Y at the bottom of the hot water collecting reservoir S1.
Through the lower duct 12 side, the air K sucked into the lower duct 12 from the suction part 121a
Is heated by the recovered hot water M1 by passing through the recovered hot water M1 flowing down in a large number in a linear manner. Since the temperature of the recovered hot water M1 is sufficiently higher than the temperature of the air K sucked into the lower duct 12, the air K can be sufficiently heated.

That is, the air K in the bathroom space W is drawn into the lower duct 12 of the duct 10 through the intake opening 61 of the apron 3 and then heated by the recovered hot water M1 while the upper duct 11 is heated. Then, after mixing with the mist of the warm water J to form heated air L, the air is jetted again into the bathroom space W to heat the interior of the bathroom space W. Then, the injection amount of the hot water J from the nozzle 20 is controlled, and the temperature in the bathroom space W is controlled to be, for example, 40 ° C., so that the sauna user in the bathroom space W gets warm. At the same time, the sweating action is promoted.

Here, the air K is heated when it comes into contact with the mist, and the saturated vapor pressure rises.
Due to evaporation of the mist, an amount of water vapor corresponding to the saturated vapor pressure of the air is contained. In this case, the latent heat of vaporization of the mist is obtained by, for example, lowering the temperature of the other mist. Then, the heated air L injected into the bathroom space W mixes with the air K in the bathroom space W to produce new air K whose temperature has increased.
However, as shown in FIG. 7, since the saturated vapor pressure of the heated air L is significantly higher than that of the air K or the new air K ′, when the new air K ′ is formed, Then, dew condensation of water vapor occurs, and the new air K 'is sufficiently heated by the latent heat of evaporation of the water generated at this time. That is, the temperature of the new air K ′ is further increased by the amount of latent heat of evaporation of the condensed water from the temperature of the air obtained by simply mixing the heated air L and the air K.

On the other hand, the mist sprayed from the nozzle 20 mixes with air in the duct 10, but those having a large particle size passing through the inner wall side of the duct 10 adhere to the inner wall of the upper duct 11 immediately after the spraying. Removed and duct 1
0 having a large particle diameter passing through the center side of the upper duct 11
When moving from the horizontal portion 110 to the inclined portion 111, it adheres to the bottom surface of the inclined portion 111 and is removed. Therefore, of the mist sprayed from the nozzle 20, most of the mist having a large particle diameter are mostly in the first reservoir 11 in the upper duct 11.
The hot water L1 flows into the bathroom space W as hot air L.
The recovered hot water M1 that has flowed down from the first reservoir 110a of the upper duct 11 to the lower duct 12 side is collected as flowing down hot water M2 in the second reservoir 120a directly or through the bottom surface of the lower duct 12. .

In this case, there is a possibility that drainage during bathing may flow into the duct 10 through the discharge unit 111a and the suction unit 121a, but the first and second reservoirs 110a and 120a may be used.
a, hot water collection reservoirs S1 and S3 on the inner side of the duct 10 where there is no possibility that the washing place drainage R (see FIG. 8) is mixed;
Since it is divided into drainage reservoirs S2 and S4 on the end side of the duct 10 where the washing place drainage R may flow, it is clear.
The recovered hot water M1 flows down into the lower duct 12, and the clean flowing hot water M2 is reliably recovered.

Since the first and second horizontal guide plates 14 and 15 are provided in the discharge section 111a and the suction section 121a of the duct 10, as shown in FIGS. 8 (a) and 8 (b), For example, when the second horizontal guide plate 15 is provided, the washing place drainage R can be prevented from being scattered deep inside the duct 10 as compared with the case where the second horizontal guide plate 15 is not provided.
Therefore, by providing the first and second horizontal guide plates 14 and 15, the hot water collecting reservoirs S1 and S3 can be enlarged, and the amounts of the collected hot water M1 and the flowing down hot water M2 can be increased.

The flowing hot water M2 in the hot water collecting reservoir S3
Is transferred into the bathtub 2 by operating the recovery pump 52a and can be used for bathing. The flowing down hot water M2 in the bathtub 2 is connected to a coupler 54b with a check valve by connecting a hose or the like. After that, the recycling pump 54a
By operating, water can be used in various ways as water for washing machines, bathroom cleaning, and garden watering. The drainage in the drainage reservoirs S2 and S4 is poured into the drainage pit for the bathroom, and the flowing down hot water M2 may be discharged into the drainage pit of the bathroom via the three-way valve 52c.
May be discharged into this drainage pit.

By the way, the heated air L flowing in the duct 10 is heated by the air heater 40 in the upper duct 11, but the temperature of the hot water J is also reduced by that amount.
The air heater 40 does not seem to play any role in the sauna device 5. However, when the temperature of the hot water J supplied to the nozzle 20 decreases, the temperature of the flowing hot water M2 in the hot water collecting reservoir S3 discharged to the outside also decreases by the corresponding amount. In terms of increasing the temperature of the space W, the thermal efficiency of the sauna device 5 can be increased accordingly.

Since the air K and the mist J1 are parallel flows flowing in the same direction, the amount of heat transfer from the mist to the air K gradually decreases. However, air
Of hot water J in the heater 40 and the heated air L in the duct 10
Are the opposite flows that approach each other and move away from each other, so that the heated air L
The heat is efficiently heated by the heater 40, and the thermal efficiency of the sauna device 5 can be increased accordingly.

Since a plurality of second horizontal guide plates 15 are provided in the suction portion 121a of the duct 10, the discharge opening 60 and the intake opening 61 of the waterproof floor pan 3 are located at positions close to each other. Even if the second horizontal guide plate 15 is operated, the heated air L jetted from the discharge opening 60 is operated.
However, the air is not immediately sucked into the duct 10 via the intake opening 61.

As described above, in the sauna apparatus 5, the air K is sucked into the duct 10 by utilizing the negative pressure generated by high-speed injection of hot water in a mist form in the duct 10, and the air K is sucked into the duct 10. Since the heated air L is formed by mixing K and mist, a large fan is not required for heating the air, which reduces the size and cost of the device, and reduces the operating and maintenance costs. Can be planned.

In particular, in the sauna device 5, the collected hot water M1 attached to the inner surface of the upper duct 11 and collected in the first liquid reservoir 110a flows down from the small hole Y into the lower duct 12, and the collected hot water M1 And the air K in the lower duct 12 are sufficiently brought into contact with each other, so that the sucked air K is sufficiently heated by the recovered hot water M1. in this case,
The hot water J is jetted from the nozzle 20 on the downstream side,
From the upstream side, recovered hot water M1 having a lower temperature than hot water J
, The air K is heated by the mist of the recovered hot water M1 and the hot water J whose temperature sequentially increases, and the air K is also effectively heated.

Further, in the sauna device 5, the mist of the hot water J is sprayed in the duct 10 and the mist having a large particle diameter is adhered to and removed from the inner surface of the duct 10, so that the mist is sprayed into the bathroom space W. The ratio of the mist having a large particle size in the heated air L can be reduced. For this reason, the inconvenience that the mist having a large particle diameter touches the body of the sauna user and gives an unpleasant feeling can be sufficiently solved.

In particular, in the sauna device 5, a relatively long upper duct 11 composed of a horizontal portion 110 and an inclined portion 111 is arranged in the left closed space V1 at one end of the bathtub 2 in the longitudinal direction. Since the duct 11 is bent in the middle and the flow direction of the heated air L is changed, the mist having a large particle diameter in the heated air L moves inside the upper duct 11 while the mist moves inside the upper duct 11. And is sufficiently removed. Further, the mist having a large particle size is
While moving in the horizontal portion 110, it falls by its own weight and adheres to the bottom of the horizontal portion 110 and is removed. In addition, the longer the duct 10, the longer the contact time between the air K and the mist, and the air K is sufficiently heated by the mist.

Further, in the sauna device 5, the first reservoir 110 for collecting the mist of the hot water J is provided in the upper duct 11.
a, and the collected hot water M1 in the first reservoir 110a flows down into the lower duct 12, so that the hot water J can be effectively used and the amount of the hot water J used can be reduced.

Further, in the sauna device 5, since the second reservoir 120a is provided in the lower duct 12, the flow-down hot water M2, which does not contribute to the heating of the air K or the like, can be sufficiently collected, and Can be effectively used.
Further, the first and second reservoirs 110a and 120a are divided into hot water recovery reservoirs S1 and S3 and drain reservoirs S2 and S4, and the drain reservoirs S2 and S4 in which the washing water D may be mixed.
Since the collected hot water is discharged without being reused, the cleanliness of the collected hot water M1 and the flowing hot water M2 can be increased.

Further, in the sauna apparatus 5, a recovery pump 52a is provided so that the flowing hot water M2 in the hot water recovery reservoir S3 is provided.
Is transferred to the bathtub 2 side, so that the flowing down hot water M2 can be used immediately as hot water for bathing, and the downflowing hot water M2 is stored in the bathtub 2 to facilitate the use of the downflowing hot water M2. Can be planned. In particular, in the sauna device 5, since the recirculation pump 54a is provided so that the flowing hot water M2 in the bathtub 2 can be transferred to another place, the use of the flowing hot water M2 can be further facilitated. it can.

In the sauna device 5, the nozzle 20
However, since a plurality of empty conical nozzles 22 are provided side by side in the longitudinal direction of the duct 10, the particle size of the mist can be reduced, and the mist flow J1
Can be brought into contact with the air K for a relatively long time. For this reason, a large negative pressure is generated in the suction portion 121a of the duct 10, so that a sufficient amount of the air K can be sucked into the duct 10, and the sucked air K can be sufficiently heated.

Further, in this sauna device 5, the duct 1
An air heater 40 is provided in the vicinity of the suction unit 121a of the air conditioner.
Since the temperature of the hot water J supplied to the nozzle 20 is reduced, the temperature of the flowing down hot water M2 discharged to the outside can be lowered, and the thermal efficiency of the sauna device 5 can be improved accordingly. Also, this air heater 40
Because the hot water J and the heated air L are caused to flow in opposite directions, and the heated air L is heated by the hot water J,
As compared with the case of the parallel flow, the thermal efficiency of the sauna device 5 can be increased accordingly.

In the sauna device 5, the duct 10
Since the plurality of first and second horizontal guide plates 14 and 15 are provided in the discharge unit 111a and the suction unit 121a of the
The direction of the heated air L discharged from 0 can be changed in the vertical direction, and the air K can be sucked into the duct 10A from the vertical direction of the washing place A. In addition, the first and second horizontal guide plates 14 and 15 determine the scattering position of the washing area drainage R that enters the duct 10 from the washing area A, by using the duct 1.
0 can be limited to the vicinity of the discharge unit 111a and the suction unit 121a, so that the drainage reservoirs S2 and S4 in the first and second reservoirs 110a and 120a can be made smaller, and the recovered hot water M
1 and the amount of the flowing hot water M2 can be increased.

Further, in the sauna device 5, since the nozzle 20 serving as a sound oscillating source is accommodated in the duct 10, noise in the bathroom space W can be suppressed and the outer surface of the duct 10 can be controlled. Since the vibration material is attached and the sound absorbing material is attached to the outer surface of the bathtub 2 and the like, the noise in the bathroom space W can be suppressed accordingly.

Further, in the sauna device 5, since it is installed in the closed space V below the bathtub 2,
Does not make the bathroom space W narrower, and the suction unit 121a of the duct 10 of the sauna device 5
Can be arranged on the lower side of the bathroom, and the interior of the bathroom space W can be efficiently heated accordingly. Also, the appearance in the bathroom is not impaired.

Further, in this sauna device 5, the duct 1
0 is arranged below the left closed space V1 at one end of the bathtub 2 and the upper part of the duct 10 is greatly opened. Therefore, a blow bath, a full-time bath, or a reheating bus is provided in the left closed space V1. Functional components can be sufficiently arranged.

Note that, as shown in FIG.
A small drying fan 62 is provided on the upstream side of the nozzle 20. When the sauna in which the hot water J is not sprayed from the nozzle 20 is stopped, the drying fan 62 is operated to take in air into the duct 10, May be dried. Of course, the drying fan 62 may be operated during the operation of the sauna, and may be used as an auxiliary for sucking the air K into the duct 10.

Further, as shown in FIG. 10, the duct 10 to which the nozzle 20 is attached is also installed in the right closed space V2 at the other end of the bathtub 2 in the longitudinal direction. May be jetted into the bathroom space W. In this case, the temperature of the flowing hot water M2 in the hot water collecting reservoir S3 of the duct 10 is also sufficiently high. Therefore, as shown in FIG. The pressure may be supplied to the nozzle 20 in the other duct 10 by using the pressure pump 63 to improve the thermal efficiency of the sauna device 5 and effectively use the hot water M2 flowing down. In this case, the flowing down hot water M2 in the hot water collecting reservoir S3 of the other duct 10 is transferred to the bathtub 2 using the collecting pump 52a.

As shown in FIG. 12, the air heater 40 spirally winds a pipe through which hot water J passes, and passes heated air L inside and outside the pipe. Is also good. Needless to say, in this case, the pipe may be made to approach the inner wall of the duct 10, and the heated air L may be passed only inside the air heater 40.

Further, if the supply pressure of the hot water J is sufficient in the hot water supply equipment 30, a plurality of constant flow valves 32g are provided in parallel as shown in FIG. Thus, the flow rate of the hot water J supplied to the nozzle 20 may be controlled, or a flow rate control valve 32h may be provided as shown in FIG. Of course, constant flow valve 3
Only one 2g may be provided, and ON-OFF control may be performed by the electromagnetic valve 32c.

As shown in FIG. 14, the three-way valve 5
A pump 57 may be provided between 5 and 56, and this pump 57 may have the functions of the recovery pump 52a and the reuse pump 54a.

Further, as shown in FIGS. 15 and 16, a pair of horizontal guide rails 64 are provided in the left closed space V1 beside the bathtub 2 and the lower side of the duct 10 slides on the guide rails 64. You may make it freely support. The guide rail 64 may be supported by support legs 65 supported on the waterproof floor pan 1 side, as shown in the figure,
It may be directly attached to the waterproof floor pan 1, the wall panel 4, and the bathtub 2 using screws or the like. When installing the duct 10 in the left-closed space V1 next to the bathtub 2, the apron 3 is removed, and the slide is moved on the guide rail 64 to close the left from the washing place 1b side of the waterproof floor pan 1. In order to remove the duct 10 from the left-closed space V1, it is sufficient to slide the duct 10 on the guide rail 64 and to pull out the duct 10 toward the washing area 1 b of the waterproof floor pan 1. . Therefore, the guide rail 64 can facilitate installation and removal of the duct 10 and the like.

In particular, the guide rail 64 is most suitable when the duct 10 and the like are installed in a bathroom unit (for an apartment) where the step between the bathtub installation section 1a and the washing place section 1b of the waterproof floor pan 1 is small. In this case, the duct 10 can be installed close to the bottom side of the waterproof floor pan 1, and a sufficient empty space can be formed above the duct 10 in the left closed space V1.

Further, the pressurizing pump 32a and the recovery pump 5
2a may be operated by one motor, or the pressurizing pump 32a and the recycle pump 54a or the collection pump 52
a and the recycling pump 54a may be operated by one motor. In this case, the pressurizing pump 32a and the recovery pump 52a may be operated at the same time, but the other pumps are not operated at the same time in order to avoid the fully closed operation and the idle operation. The pump is properly used by the reverse rotation.

In the sauna device 5, the nozzle 20
Is installed on the horizontal part 110 side of the upper duct 11,
This may be installed on the inclined portion 111 side so that the air K flows from the upper duct 11 side to the lower duct 12 side.
In this case, the mist having a large particle diameter sprayed from the nozzle 20 adheres to the inner surfaces of the bent duct 13 and the lower duct 12 and is removed, and these are poured into the second liquid reservoir 120a.

[0088]

Since the present invention is configured as described above, it has the following effects.

According to the first aspect of the present invention,
In the duct, the air in the bathroom space is sucked into the duct by using the negative pressure generated when high-speed hot water is sprayed from the nozzle in the form of a mist from the nozzle, and the heated air mixed with this air and mist is injected into the bathroom space. Therefore, a large fan is not required, and the size and cost of the apparatus can be reduced, and the operating cost can be reduced.

According to the present invention, since the duct is arranged in a relatively long state in the closed space next to the bathtub,
As the amount of mist adhering to the inner surface of the duct increases, the mist can be expected to fall naturally in the duct along the waterproof floor pan, and the mist adheres to the inner surface of the duct at the bent portion of the duct. For this reason, most of the relatively large mist in the heated air can be removed in this duct,
The mist in the heated air does not cause any discomfort to the sauna user.

Further, in the present invention, a first reservoir is formed on the upper side of the duct formed in a hairpin shape, and the mist sprayed from the nozzle is collected in the first reservoir, and then the recovered hot water is collected. Flows down to the lower side of the duct, and the recovered hot water also heats the air, so that the air is sufficiently heated and the recovered hot water is effectively used.
Further, in the present invention, since the second reservoir is formed at the lower side of the duct and the collected hot water flowing down in the second reservoir is collected, the collected hot water can be sufficiently collected. Thus, effective use of resources can be achieved.

In the present invention, since the duct and the like are installed in the closed space below the rim portion of the bathtub, the duct and the like do not occupy the bathroom space, and the bathroom space is not narrowed. Since the duct and the like are covered with the apron and the like and cannot be seen, the appearance in the bathroom does not deteriorate.

According to the second aspect of the present invention,
In the case of the invention described in claim 1, the nozzle is arranged near the hairpin-shaped bent portion of the duct, and the air is flowed from the lower side to the upper side of the duct, so that the air sucked into the duct is First, it is heated with recovered hot water having a relatively low temperature, and then heated with a mist of hot water having a higher temperature. Therefore, the air in the duct can be effectively heated.

According to the third aspect of the present invention,
In the case of the first aspect of the present invention, since the air heater for heating the heated air by the hot water before being supplied to the nozzle is provided on the discharge portion side in the duct, the thermal efficiency of the sauna device is reduced. Can be raised and the amount of hot water used can be reduced.

According to the fourth aspect of the present invention,
In the case of the invention described in claim 1, since the nozzle is provided with a plurality of empty conical nozzles that inject hot water as a radial mist flow along a substantially conical surface, side by side in the longitudinal direction of the duct. In addition, a large amount of air can be sucked into the duct, and the amount of heat transferred from the mist to the air can be increased.

According to the fifth aspect of the present invention,
In the case of the invention described in claim 1, the first and second reservoirs are divided into a hot water recovery reservoir on the inner side of the duct and a drain reservoir on the suction portion side or the discharge portion side of the duct, Since a large number of small holes are formed at the bottom of the hot water collecting reservoir in the first liquid reservoir, the air can be heated with clean collected hot water, and the collected hot water collected in the second liquid reservoir also becomes clean. Can be maintained, and the utility value of the recovered hot water can be increased.

According to the sixth aspect of the present invention,
In the case of the invention according to claim 5, since a plurality of horizontal guide plates for guiding the heated air and the air in the vertical direction are attached to the discharge portion and the suction portion of the duct, respectively, The drainage during bathing can be prevented from scattering to the back side of the duct, and the hot water collecting reservoir can be enlarged, so that a large amount of clean hot water can be obtained.

According to the seventh aspect of the present invention,
In the case of the invention as set forth in claim 1 or 5, a recovery pump is provided for transferring the collected hot water in the second reservoir or the hot water collection reservoir in the second reservoir to the bathtub side. It can be easily used for bathing,
Use of the recovered hot water can be facilitated.

According to the eighth aspect of the present invention,
In the case of the first aspect of the present invention, since the pressurizing pump for pressurizing the hot water is provided in the hot water supply facility for supplying the hot water to the nozzle on the downstream side, the sauna device is controlled depending on the pressure of the tap water. Can be installed without being done.

According to the ninth aspect of the present invention,
In the case of the invention described in claim 1, a small drying fan for drying the inside of the duct is provided on the upstream side of the nozzle of the duct, so that the inside of the duct can be sufficiently dried. Mold can be prevented. By operating the drying fan during use of the sauna, more air can be sucked into the duct.

According to the tenth aspect of the present invention, in the case of the first aspect, the duct is moved between the washing floor side of the waterproof floor pan and the closed space where the duct is installed. Since the guide rail is provided, the duct and the like can be easily installed in the closed space beside the bathtub, and the duct and the like can be easily taken out from the closed space beside the bathtub.

According to the eleventh aspect of the present invention, the same effects as those of the first and second aspects can be obtained, and the heating of the bathroom space can be speeded up.

According to the twelfth aspect of the present invention, in the case of the eleventh aspect, the recovered hot water in the liquid reservoir formed at the lower side of one of the ducts is pressurized and the other duct is pressurized. Since the recovered hot water pressurizing pump for supplying to the nozzle on the side is provided, the thermal efficiency of the sauna device can be improved, and the amount of hot water used can be reduced.

[Brief description of the drawings]

FIG. 1 is a sectional view of a bathroom sauna apparatus according to an embodiment of the present invention.

FIG. 2 is a perspective view showing a state in a bathroom in which the bathroom sauna device shown in FIG. 1 is installed.

FIG. 3 is a diagram showing details of a nozzle.

FIG. 4 is a view as viewed in the direction of arrows AA in FIG. 3;

FIG. 5 is a diagram illustrating a difference in mist flow between an empty cone nozzle and a full cone nozzle.

FIG. 6 is a flow chart of hot water showing hot water supply equipment, hot water utilization equipment, and the like.

FIG. 7 is a diagram showing a change in saturated water vapor pressure in air due to a difference in temperature.

FIGS. 8A and 8B are diagrams illustrating the operation of a second horizontal guide plate provided at a discharge portion of a duct, wherein FIG. 8A illustrates a case where a horizontal guide plate is provided, and FIG. Show.

FIG. 9 is a view showing a bathroom sauna device when a drying fan is provided in a duct.

FIG. 10 is a plan view of a bathroom provided with a bathroom sauna device according to a modified embodiment of the present invention.

FIG. 11 is a diagram showing a use state of the recovered hot water of the bathroom sauna apparatus shown in FIG. 10;

FIG. 12 is a diagram showing an air heater according to another embodiment.

13A and 13B are diagrams showing a hot water supply facility according to another embodiment when the supply pressure of hot water is high, wherein FIG. 13A shows a case where a large number of quantitative valves are provided, and FIG. Is shown.

FIG. 14 is a diagram showing a flow of collected hot water when one pump has a role of a collection pump and a reuse pump.

FIG. 15 is a view showing a guide rail and the like for moving the duct.

16 is a view taken in the direction of arrows BB in FIG. 15;

FIG. 17 is a view showing a conventional bathroom sauna apparatus.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Waterproof floor pan 2 Bathtub 2b Rim part 2b-1 Front rim part 2b-2 Left rim part 3 Apron 5 Sauna device 10 Duct 11 Upper duct (upper side) 12 Lower duct (lower side) 13 Curved duct (bent part) 14 First horizontal guide plate (horizontal guide plate) 15 Second horizontal guide plate (horizontal guide plate) 20 Nozzle 22 Empty cone nozzle 30 Hot water supply facility 32a Pressurizing pump 40 Air heater 52a Recovery pump 60 Discharge opening 61 intake opening 62 drying fan 63 recovered hot water pressurizing pump 64 guide rail 110a first liquid reservoir (first liquid reservoir) 111a discharge unit 120a second liquid reservoir (second liquid reservoir) 121a suction unit J hot water K Air L Heated air S1, S3 Hot water collection reservoir S2, S4 Drainage reservoir M1 Recovered hot water M2 Downflowing hot water (recovered hot water) V Closed space V1 Left closed space W Bathroom space Y Small hole

Claims (12)

[Claims] 1. A nozzle for jetting hot water in a mist form at a high speed, and a nozzle installed inside the nozzle, and a negative pressure generated by jetting the hot water from the nozzle on one end side to surround the nozzle. A suction unit for sucking air is formed, and a duct having a discharge unit for discharging heated air composed of a mixture of the sucked air and the mist of hot water is formed on the other end side; A bathroom sauna apparatus for blowing air into a bathroom space, sucking air in the bathroom space into the duct, and heating the bathroom space, wherein the duct is installed on a waterproof floor pan. The heated air discharge opening and the air intake are installed in an apron covering one side in the longitudinal direction of the bathtub and below the rim portion of the bathtub. Forming an input opening and In addition, the suction section side and the discharge section side are formed so as to be bent obliquely upward in a state where the ducts are vertically overlapped in a hairpin shape, and the hairpin-shaped bent portion is formed in the back of the closed space. In the state positioned on the side, this duct is arranged so as to substantially follow the waterproof floor pan, and the suction unit and the discharge unit are connected to the intake opening and the discharge opening of the apron. Connected to the duct, and further provided with the nozzle on the upstream side on the upper side of the duct, and into the upper side of the duct, a concave first reservoir for flowing the mist of the hot water attached to the inner surface of the duct. And, at the bottom of the first reservoir, a number of small holes for allowing the recovered hot water in the first reservoir to flow down to the lower side of the duct, and further, at the lower side of the duct. , The first reservoir Bathroom sauna apparatus characterized by forming the reservoir second liquid collecting et falling was recovered hot water. 2. The nozzle according to claim 1, wherein the nozzle is disposed near the hairpin-shaped bent portion of the duct, and the air is flowed from the lower side to the upper side of the duct. The bathroom sauna device according to claim 1. 3. An air heater for heating the heated air by the hot water before being supplied to the nozzle is provided on the discharge section side in the duct. The sauna device for a bathroom as described. 4. The nozzle according to claim 1, wherein a plurality of empty conical nozzles for jetting the hot water as a radial mist flow along a substantially conical surface are provided side by side in the longitudinal direction of the duct. The bathroom sauna apparatus according to claim 1, wherein: 5. The first and second reservoirs are divided into a hot water recovery reservoir on an inner side of the duct and a drain reservoir on the suction unit side or the discharge unit side of the duct. The bathroom sauna apparatus according to claim 1, wherein the plurality of small holes are formed in a bottom portion of the hot water collecting reservoir of the first liquid reservoir. 6. The apparatus according to claim 5, wherein a plurality of horizontal guide plates for vertically guiding the air or the heated air are attached to the discharge section and the suction section of the duct. Bathroom sauna equipment. 7. A collecting pump for transferring the collected hot water in the second liquid reservoir or the hot water collecting reservoir of the second liquid reservoir to the bathtub side. Or the sauna device for bathroom according to 5. 8. The sauna apparatus for a bathroom according to claim 1, wherein a pressurizing pump for pressurizing the hot water is provided in hot water supply equipment for supplying the hot water to the nozzle. 9. An upstream side of the nozzle of the duct,
2. The bathroom sauna apparatus according to claim 1, further comprising a small drying fan for drying the inside of the duct. 10. A guide rail for moving said duct between said washing floor side of said waterproof floor pan and said closed space in which said duct is installed. The bathroom sauna device according to claim 1. 11. A nozzle for jetting hot water in a mist at a high speed, and the nozzle is installed inside the nozzle, and a negative pressure generated by the jet of the hot water from the nozzle is provided at one end of the nozzle. A suction unit for sucking air is formed, and a duct on which the other end side is provided with a discharge unit of heated air for heating by mixing the sucked air with the mist of hot water, A bathroom sauna device that blows air into the bathroom space, sucks air in the bathroom space into the duct, and heats the bathroom space, wherein the duct to which the nozzle is attached is waterproof. Each of the two heated airs is placed in an apron covering one side of the bathtub on the floor pan in the closed space below the rim portion of the bathtub at both ends in the longitudinal direction of the bathtub. A discharge opening and two air intake openings are formed, and the suction unit side and the discharge unit side are directed obliquely upward in a state where the ducts are vertically overlapped in a hairpin shape. With the hairpin-shaped bent portion positioned on the back side of the closed space, the duct is arranged to substantially follow the waterproof floor pan, and the suction portion and the suction portion are formed. A discharge unit is connected to the intake opening and the discharge opening of the apron.Furthermore, the nozzle is provided on the upstream side on the upper side of the duct, and on the upper side of the duct, A concave first liquid reservoir into which the mist of the hot water adhered to the inner surface of the duct is poured is formed, and the collected hot water in the first liquid reservoir is supplied to the first bottom of the liquid reservoir. Many small holes flowing down to the bottom Formed, further, on the lower side of the duct, the first liquid reservoir bathroom sauna apparatus characterized by forming the reservoir second liquid collecting flow down the recovered hot water from. 12. A recovered hot water pressurizing pump for pressurizing recovered hot water in the second reservoir formed on the lower side of the one duct and supplying the recovered hot water to the nozzle on the other duct side. The bathroom sauna apparatus according to claim 11, wherein the bathroom sauna apparatus is provided.