JPH09164174A - Mist generator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To achieve a lower cost by a method wherein a thin liquid film is formed in a passage between a disk-shaped base plate provided to a rotating impeller and a circular plate and is sent flying almost in a tangential direction from the outer rim of the impeller so that is hits an impact plate to generate a fine mist efficiently. SOLUTION: When this mist generator A is started, hot water passage through a hot water hose 18 to be supplied to a central opening 3d of an impeller 3 via an opening 7a formed in a lid member 7. The hot water flows into a passage with a very limited height between a base plate 3a a circular plate 3c, is accelerated by receiving a shearing force in the tangential direction and flows outward diametrically within the passage while forming a thin liquid film. The liquid film is ejected almost in the tangential direction from the outer rim of the impeller 3 while being crushed and atomized into a fine mist. The liquid film is further atomized by an impact plate, passes through a second opening of the lid member 7 to be jetted out askew upward from the mist generator A. Residual drops that are not sprayed as mist are returned to a passage for supplying hot water via a circulation pipe 2a or the like.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mist generator.

[0002]

2. Description of the Related Art There are two types of saunas, a dry sauna that exposes the human body to a low humidity, high temperature environment, and a mist sauna that exposes the human body to a high humidity, medium temperature environment. In the mist sauna,
There is an advantage that a sore throat, hair drying and the like are not caused at the time of bathing, and a gentle bathing feeling can be obtained. Conventionally, a plurality of mist sauna devices have been proposed. JP-A-63-207927
The gazette proposes a bathroom heating device in which a steam generator that generates steam by boiling water is connected to a bathroom by piping, and steam is introduced into the bathroom. Japanese Utility Model Laid-Open Publication No. 1-138439 proposes a steam sauna apparatus in which warm water heated by a heater is atomized by an ultrasonic humidifier. JP-A-4-2418
No. 66 and Japanese Patent Application Laid-Open No. Hei 4-241867 propose a mist sauna apparatus in which hot water heated by a gas water heater is pressurized by a pump and sprayed through a nozzle.

[0003]

The above-mentioned conventional mist sauna apparatus requires a large amount of work when installed in an existing bathroom, has a complicated structure, is large, and is expensive. was there. The present invention has been made in view of the above problems, and can be connected to an existing water supply and hot water tap provided in a bathroom without requiring large-scale construction, has a simple structure, and is small and inexpensive. It is an object of the present invention to provide a mist generation device that has a high mist generation efficiency.

[0004]

In order to solve the above-mentioned problems, in the present invention, an impeller composed of a disk-shaped base plate, a motor for rotationally driving the impeller, and an outer radial direction of the impeller are provided. , A plurality of collision plates arranged at intervals in the circumferential direction of the impeller, a hot water supply channel for supplying hot water to the base plate, and was not sprayed as mist in the hot and cold water ejected from the impeller. The drop water recirculation device is provided with a drop water recirculation device that recirculates the remaining drop water to the hot water supply flow path.
Provided is a mist generating device, which has a reflux flow passage having one end opened below the impeller and the other end connected to a hot water supply flow passage, and a pump disposed on the way of the reflux flow passage. To do.

In the mist generating device according to the present invention,
When hot water is supplied to the central portion of the base plate via the hot water supply passage, the hot water is subjected to a shearing force in a tangential direction from the rotating base plate to be accelerated, forming a thin liquid film while the other of the base plate is being formed. Flow outward in the radial direction. The outer edge of the base plate,
That is, the hot water or the liquid film of water that has reached the outer edge of the impeller is
While crushing and atomizing into fine mist from the outer edge of the impeller,
It jumps out almost tangentially. The warm water or the mist of water that has sprung out in a substantially tangential direction collides with the rear surface of the impingement plates arranged at intervals in the circumferential direction outward in the radial direction of the impeller, in the rotational direction of the impeller, and Be miniaturized. The mist that has been made fine by the collision with the collision plate is reflected and sprayed from the mist generator into the bathroom. Residual drop water that was not sprayed as mist in the hot and cold water spouted from the impeller returned to the hot water supply flow path through the reflux flow path and pump of the drop water reflux device, and was supplied again to the impeller. Misted.

The mist generating device according to the present invention can be connected to an existing water supply and hot water tap installed in the bathroom without requiring a large-scale work by making a slight modification to the existing water and hot water supply tap. Further, the mist generator according to the present invention has a simple structure, is small, and is inexpensive.
By connecting the mist generating device according to the present invention to the water supply and hot water tap provided in the existing bathroom, the mist sauna device can be easily configured in the existing bathroom.

In the mist generator according to the present invention,
Residual drop water that was not sprayed as mist in the hot and cold water spouted from the impeller returned to the hot water supply flow path through the reflux flow path and pump of the drop water reflux device, and was supplied again to the impeller. Misted. Therefore, the mist generation efficiency (ratio of the amount of mist sprayed into the bathroom and the amount of water supplied to the mist generation device) of the mist generation device according to the present invention is high.

In the present invention, an impeller in which one or more annular plates are laminated in parallel with the base plate at a minute interval from each other on a disc-shaped base plate, and a motor for rotationally driving the impeller. , A plurality of collision plates arranged radially outward of the impeller and spaced apart from each other in the circumferential direction of the impeller, a hot water supply channel for supplying hot water to the impeller, and hot and cold water spouted from the impeller A drop water recirculation device that recirculates the remaining drop water that has not been sprayed as mist inside into the hot water supply passage, the drop water recirculation device having one end open below the impeller and the other end being a hot water supply passage. There is provided a mist generating device characterized in that the mist generating device has a recirculation flow path connected to the recirculation flow path and a pump disposed on the way of the recirculation flow path.

In the mist generator according to the present invention,
When hot water is supplied to the central opening of the impeller through the hot water supply passage, the hot water flows into a flow passage of a minute height formed between the base plate and the annular plate or between the adjacent annular plates. , Is accelerating by receiving a shearing force in a tangential direction from the rotating base plate and the annular plate to form a thin liquid film and flow radially outward in the flow path. The liquid film of the warm water that has reached the outer edge of the flow path, that is, the outer edge of the impeller, is crushed and atomized into fine mist from the outer edge of the impeller, and jumps out in a substantially tangential direction. The mist of hot water that jumped out in a substantially tangential direction was located radially outward of the impeller,
The collision plates, which are arranged at intervals in the circumferential direction, collide with the rear surface of the impeller in the rotation direction of the impeller at a substantially right angle and are further miniaturized. The mist that has been made fine by the collision with the collision plate is reflected and sprayed from the mist generator into the bathroom.

In the mist generator according to the present invention,
A thin liquid film is reliably formed in a flow path of a minute height formed between a disk-shaped base plate and a circular ring plate provided in a rotating impeller or between adjacent circular plates, and the thin liquid film is formed. The liquid film of spills out in a substantially tangential direction from the outer edge of the impeller and collides with the collision plate, so that the liquid film is reliably crushed and atomized into fine mist. The amount of mist generated is increased by stacking a plurality of annular plates in parallel on a disk-shaped base plate with a small gap therebetween.

In the mist generator according to the present invention,
Residual drop water that was not sprayed as mist in the hot and cold water spouted from the impeller returned to the hot water supply flow path through the reflux flow path and pump of the drop water reflux device, and was supplied again to the impeller. Misted. Therefore, the mist generation efficiency (ratio of the amount of mist sprayed into the bathroom and the amount of water supplied to the mist generation device) of the mist generation device according to the present invention is high.

In a preferred aspect of the present invention, the drop water recirculation device has a drop water tank for storing drop water. In the case where the drop water recirculation device has a drop water tank for storing the drop water, when the amount of generated drop water exceeds the capacity of the pump of the drop water recirculation device, the excess amount of drop water is dropped into the drop water tank. By being stored in, it is possible to prevent a decrease in mist generation efficiency.

In a preferred embodiment of the present invention, the mist generator controls the output of the pump according to the level sensor for detecting the water level of the drop water in the drop water tank and the water level of the drop water in the drop water tank. And a control device. If the mist generator is provided with a level sensor that detects the water level of the drop water in the drop water tank, and a control device that controls the output of the pump according to the water level of the drop water in the drop water tank, The occurrence of overflow of the drop water tank is prevented.

In a preferred aspect of the present invention, a strainer is provided at one end of the return flow passage opening below the impeller. By disposing the strainer at one end of the return flow passage that opens below the impeller, it is possible to prevent the pump from entraining air and generating noise.

In a preferred aspect of the present invention, a porous material combing is erected around one end of the return flow passage opening below the impeller. By arranging the combing of the porous material upright around one end of the return flow passage that opens below the impeller, it is possible to prevent foreign matter such as hair from flowing into the strainer and clogging the strainer.

In a preferred aspect of the present invention, the pump is disposed at one end of the return flow passage opening below the impeller. By arranging the pump at one end of the circulation passage for opening to the lower side of the impeller, it is possible to prevent the pump from entraining air and reducing the output of the pump.

In a preferred aspect of the present invention, the drop water reflux device has a heater for heating the drop water. When the drop water recirculation device has a heater that heats the drop water, the drop water recirculates to prevent the temperature of the mist from decreasing.

[0018]

BEST MODE FOR CARRYING OUT THE INVENTION A mist generator according to a first embodiment of the present invention will be described with reference to FIGS. As shown in FIG. 1, a mist generator A is placed on a bathroom floor.
The mist generator A includes a bottomed cylindrical outer casing 1a having an obliquely cut open upper end. Inside the outer casing 1a, a bottomed cylindrical inner casing 1b having an open upper end is obliquely arranged in parallel with the inclined upper end of the outer casing 1a. Inner casing 1
An opening 1b ₁ is formed at the lower end of b. A drop water return pipe 2a is connected to the opening 1b ₁ .

An impeller 3 is obliquely arranged in the inner casing 1b in parallel with the inclined upper end of the outer casing 1a. The impeller 3 has a disk-shaped base plate 3a and a spacer 3b, and the base plate 3a is spaced apart from each other by a minute distance.
It has a plurality of annular plates 3c that are laminated on top and in parallel with the base plate 3a. The motor 4 is fixed to the outer surface of the bottom wall of the inner casing 1b. Output shaft 4a of motor 4
Extends through the bottom wall of the inner casing 1b into the inner casing 1b. The upper end of the output shaft 4a has the base plate 3
It is fixed to the center of the lower surface of a. The gap between the through hole formed in the bottom wall of the inner casing 1b and the output shaft 4a is
It is sealed by the shaft sealing device 5.

As shown in FIGS. 1 and 2, a plurality of flat plate-like collision plates 6 are arranged radially outward of the impeller 3 and are spaced apart from each other in the circumferential direction, and are receding blade-shaped with respect to the rotation direction of the impeller 3. It is installed in. The collision plate 6 is inserted into a slit 1b ₂ formed at the upper end of the inner casing 1b and fixed to the inner casing 1b. As shown in FIG.
The collision plate 6 is arranged so as to be inclined with respect to the base plate 3a of the impeller so that the rear surface of the collision plate 6 with respect to the rotation direction of the impeller 3 can be seen when facing down the impeller from diagonally above. ing.

As shown in FIGS. 1 and 4, the uppermost annular plate 3
An elliptical lid member 7 that covers the impeller 3 and the collision plate 6 is disposed at a distance above c. At the center of the lid member 7, a first opening 7a is provided facing the central opening 3d of the impeller 3.
Are formed. As shown in FIG. 4, the lid member 7 includes
The substantially same number of second openings 7b as the collision plates 6 are formed. _One side 7b1 of the second opening 7b is in contact with the front surface of the corresponding upper end of the collision plate 6 in the rotation direction of the impeller 3. _One side 7b of the second opening 7b facing the one side 7b _1.
2 is spaced from the rear surface of the upper end of the corresponding collision plate 6 with respect to the rotation direction of the impeller 3 in such a manner that no fingers can enter in the circumferential direction. The lid member 7 is attached to the inner casing 1 by screws 8.
The outer casing 1 is fixed to the upper end of b by the screw 9.
It is fixed to the upper end of a.

As shown in FIGS. 1 and 4, a third opening 7c is formed at the upper edge of the lid member 7. The third opening 7c is
The first hot water supply passage 10a attached to the upper surface of the lid member 7 communicates with the first opening 7a and also communicates with the second hot water supply passage 10b extending through the side wall of the outer casing 1a to the outside.

As shown in FIG. 1, a drop water tank 11 is provided in the outer casing 1a. The drop water tank 11 communicates with the outside air through an opening 1a formed in the side wall of the outer casing 1a. The drop water return pipe 2 a extends into the drop water tank 11. The drop water return pipe 2b is the drop water tank 11
12 extending from the pump and driven to rotate by the motor 4
Connected to Drop water return pipe 2c is pump 1
It extends from 2 and is connected to the second hot water supply passage 10b.

In the outer casing 1a, a rechargeable battery 13 as a power source for driving the motor and a control device 14 are provided. A start switch 15 is attached to the outer casing 1a.

A valve 16 is attached to a hot water supply tap provided in the bathroom.
And a branch pipe 17 are attached. Hot water supply hose 18
Has one end connected to the branch pipe 17 via the coupler 19 and the other end connected via the coupler 20 to the mist generator A.
Is connected to the second hot water supply passage 10b. The valve 16, the branch pipe 17, the hot water supply hose 18, and the couplers 19 and 20 form a water supply hot water supply device B. The mist generating device A and the hot water supply device B form a mist sauna device.

The operation of the mist generator A having the above structure will be described below. A bather opens the valve 16 and turns on the start switch 15 of the mist generator A. The motor 4 starts rotating. Hot water produced by the operation of a hot water supply device (not shown) passes through a hot water supply hot water tap provided in the bathroom, a branch pipe 17 and a hot water supply hose 18, and hot water supply passages 10b to 10a,
It is supplied to the central opening 3d of the rotating impeller 3 through the opening 7a formed in the lid member 7 of the mist generator A. The hot water flows into a flow path of a minute height formed between the base plate 3a and the annular plate 3c or between the adjacent annular plates 3c, and is tangential to the rotating base plate 3a and the annular plate 3c. It is accelerated by a shear force in the direction, and flows radially outward in the flow path while forming a thin liquid film.

As shown by the double arrow in FIG. 2, the liquid film of hot water reaching the outer edge of the flow path, that is, the outer edge of the impeller 3, is
From the outer edge of the impeller 3, the fine mist is crushed and atomized, and jumps out in a substantially tangential direction. The mist of the warm water that has flowed out in a substantially tangential direction is arranged radially outward of the impeller 3 at intervals from one another in the circumferential direction, and arranged in a retreating wing-like manner with respect to the rotation direction of the impeller 3. 6 collides with the rear surface in the rotation direction of the impeller 3 at a substantially right angle when viewed from obliquely above, and is further miniaturized. When the mist collides with the rear surface of the impingement plate 6 in the rotation direction of the impeller 3 at a substantially right angle when viewed obliquely from above, the miniaturization of the mist is promoted.

As shown by a double arrow in FIG. 3, the collision plate 6 is arranged so as to be inclined with respect to the base plate 3a of the impeller 3.
The mist that collides with the rear surface in the rotation direction of the impeller 3 and is made fine when viewed from diagonally above is reflected obliquely upward, passes through the second opening 7b of the lid member 7, and is diagonally inclined from the mist generator A. Ejects upwards.

Water droplets adhering to the collision plate 6 and mist having a relatively large particle diameter become drop water and become the inner casing 1.
It drops toward the bottom of b and flows into the drop water tank 11 through the opening 1b ₁ formed in the inner casing 1b and the drop water return pipe 2a. The drop water stored in the drop water tank 11 flows into the pump 12 through the drop water return pipe 2b, and flows back into the second hot water supply passage 10b through the drop water return pipe 2c. Second
The drop water that has recirculated to the hot water supply passage 10b is supplied by the water supply and hot water supply device B.
It joins the hot and cold water supplied from, is supplied again to the impeller 3, is formed into a mist, and is sprayed into the bathroom.

In the mist generator A, a minute height formed between the disk-shaped base plate 3a and the annular plate 3c of the rotating impeller 3 or between the adjacent annular plates 3c. A collision liquid is formed in which a thin liquid film is formed in the flow path, the thin liquid film is projected from the outer edge of the impeller 3 in a substantially tangential direction, and is arranged in a receding blade shape with respect to the rotation direction of the impeller 3. By colliding with 6 at a substantially right angle when viewed from diagonally above,
It is surely crushed into fine mist and atomized. The mist generation amount can be increased or decreased by increasing or decreasing the number of the annular plates 3c. The present mist generator A can be connected to an existing water supply and hot water tap installed in the bathroom without requiring a large-scale work by making a slight change to the existing water supply and hot water supply tap. Further, the mist generator A has a simple structure, is small in size, and is inexpensive. By connecting the mist generating device A to the water supply and hot water tap provided in the existing bathroom, the mist sauna device can be easily configured in the existing bathroom.

In this mist generator A, the impeller 3
The remaining drop water that was not sprayed as mist in the hot and cold water supplied to the drop water reflux pipes 2a to 2c,
It is returned to the second hot water supply passage 10b via the drop water tank 11 and the pump 12, supplied again to the impeller 3, made into a mist, and sprayed into the bathroom. Therefore, the mist generation efficiency (the ratio of the amount of mist sprayed into the bathroom and the amount of water supplied to the mist generator A) of the present mist generator A is high. In the case where the drop water tank 11 is not provided, when the amount of drop water generated exceeds the capacity of the pump 12, the excess amount of drop water overflows from the mist generator A and is discarded. In the present mist generator A having the tank 11, the above-mentioned amount of drop water is temporarily stored in the drop water tank 11, and then the second hot water supply passage 10 is provided.
reflux to b. This prevents a decrease in mist generation efficiency.

A second embodiment of the present invention will be described with reference to FIGS. 'In the drop water return pipe 2a to the opening 1b _1' mist generating apparatus A according to the second embodiment, one end of which is connected, it is connected 'pump 12 to the other end of the' drop water return pipe 2a. Drop water return pipe 2
c'extends from the pump 12 'and is connected to the second hot water supply passage 10b. At the one end of the drop water return pipe 2a ',
A strainer 30 is provided, and a combing 31 made of a porous material is provided upright around the one end. Strainer 3
As examples of 0, there are lotus root-shaped, honeycomb-shaped pores, meshes and the like. First
The drop water tank 11 of the embodiment and the pump 12 which is rotationally driven by the motor 4 are not provided. Except for the above, the structure of the mist generator A ′ is similar to that of the mist generator A.

If a drop water tank for storing drop water is not provided and the amount of hot water supplied to the impeller 3 is small and the amount of drop water generated is small, the pump 12 'may suck air and generate noise. There is. Strainer at one end of the drop water return pipe 2a 'for connection to the opening 1b ₁ 3
When 0 is provided, the flow of drop water into the strainer 30 is stopped once the strainer 30 has sucked in a small amount of air. If the pore size of the strainer 30 is made coarse to some extent, the air sucked into the strainer 30 will escape to the inner casing 1b side, and the flow of drop water into the strainer 30 will resume. As a result, the pump 12 'does not suck in air and no noise is generated. Since combing 31 of porous material around the one end of the drop water return pipe 2a 'for connection to the opening 1b ₁ is erected, foreign matter such as hair situation where the strainer 30 flows into the strainer 30 is clogged Occurrence is prevented.

A third embodiment of the present invention will be described with reference to FIG. In the mist generator A ″ according to the third embodiment, the pump 12 ″ is directly connected to the opening 1b ₁ .
A drop water return pipe 2c ″ extends from the pump 12 ″,
It is connected to the second hot water supply passage 10b. The strainer 30 and the combing 31 are not provided. Except for the above, the structure of the mist generator A ″ is similar to that of the mist generator A ′.

If a drop water recirculation pipe is present between the opening 1b ₁ and the pump 12 ", the air sucked into the drop water recirculation pipe remains in the drop water recirculation pipe and is difficult to escape to the inner casing 1b side. Device A ″
In the pump 12 'is connected directly to the opening 1b _1, opening 1b ₁ and the pump 12 serving as the air pocket "the volume of the flow path between a small, air sucked into the flow path of the small capacity Even if this happens, the air easily escapes to the inner casing 1b side. As a result, the suction of air from the pump 12 ″ is suppressed, and the output reduction of the pump 12 ″ is suppressed.

Although the embodiment of the present invention has been described above, the present invention is not limited to the above embodiment. In the first embodiment, a level sensor for detecting the water level of the drop water in the drop water tank 11 is provided, and the controller 14 rotates the motor 4 according to the rise of the water level of the drop water in the drop water tank 11. The speed may be increased and the output of the pump 12 may be increased. With this configuration, it is possible to prevent the drop water tank 11 from overflowing. In the first embodiment, the heater 21 may be provided in the drop water tank 11 as shown by the alternate long and short dash line in FIG. By recirculating the drop water heated by the heater 21 to the second hot water supply passage 10b, it is possible to prevent the temperature drop of the mist due to the recirculation of the drop water. In the first embodiment, a separate pump may be provided instead of the pump 12 that is rotationally driven by the motor 4. The number of circular plates 3c may be one or more.
With at least one sheet, a flow path for forming a thin liquid film can be obtained. The impeller 3 of the mist generator A may be configured only by the disc-shaped base plate 3a. In this case, the warm water supplied to the central portion of the base plate 3a is subjected to a shearing force in a tangential direction from the rotating base plate 3a and accelerated to form a thin liquid film, and the upper surface of the base plate 3a is formed. , Radially outward, and from the outer edge of the base plate 3a, that is, the outer edge of the impeller 3, the fine mist is crushed and atomized, and jumps out in a substantially tangential direction. The power sources of the mist generators A, A ′, A ″ may be used as household power sources.

│

The mist generating device according to the present invention can be connected to an existing water supply and hot water tap installed in a bathroom without requiring a large-scale work by making a slight modification to the existing water and hot water supply tap. Is. Further, the mist generator according to the present invention has a simple structure, is small, and is inexpensive.
By connecting the mist generating device according to the present invention to the water supply and hot water tap provided in the existing bathroom, the mist sauna device can be easily configured in the existing bathroom.

In the mist generator according to the present invention,
Residual drop water that was not sprayed as mist in the hot and cold water spouted from the impeller returned to the hot water supply flow path through the reflux flow path and pump of the drop water reflux device, and was supplied again to the impeller. Misted. Therefore, the mist generation efficiency (ratio of the amount of mist sprayed into the bathroom and the amount of water supplied to the mist generation device) of the mist generation device according to the present invention is high.

When the drop water recirculation device has a drop water tank for storing the drop water, when the amount of generated drop water exceeds the capacity of the pump of the drop water recirculation device, the excess amount of drop water is generated. By being stored in the drop water tank, a decrease in mist generation efficiency is prevented. If the mist generator is provided with a level sensor that detects the water level of the drop water in the drop water tank, and a control device that controls the output of the pump according to the water level of the drop water in the drop water tank, The occurrence of overflow of the drop water tank is prevented.

By disposing the strainer at one end of the return flow passage, which opens downward of the impeller, it is possible to prevent noise from being generated when the pump entrains air. By arranging the combing of the porous material upright around one end of the return flow passage that opens below the impeller, it is possible to prevent foreign matter such as hair from flowing into the strainer and clogging the strainer.

By disposing the pump at one end of the flow path for reflux, which is open to the lower side of the impeller, it is possible to prevent the pump from entraining air and reducing the output of the pump.

When the drop water recirculation device has a heater for heating the drop water, it is possible to prevent the situation where the temperature of the mist drops due to the recirculation of the drop water.

[Brief description of the drawings]

FIG. 1 is a mist generator according to a first embodiment of the present invention,
It is a lineblock diagram of a mist sauna device provided with the mist generating device.

FIG. 2 is a view taken in the direction of arrows II-II in FIG.

FIG. 3 is a view taken in the direction of arrows III-III in FIG. 2;

FIG. 4 is a view taken in the direction of arrows IV-IV in FIG. 1;

FIG. 5 is a mist generator according to a second embodiment of the present invention,
It is a lineblock diagram of a mist sauna device provided with the mist generating device.

FIG. 6 shows a mist generating device according to a second embodiment of the present invention,
It is an expanded sectional view of the connection part of a drop water return pipe and an inner casing.

FIG. 7 is a mist generator according to a third embodiment of the present invention,
It is a lineblock diagram of a mist sauna device provided with the mist generating device.

[Explanation of symbols]

A, A ', A "Mist generator B Water supply / hot water supply device 1a External casing 1b Inner casing 2a, 2b, 2c, 2a', 2c ', 2c" Drop water return pipe 3 Impeller 3a Base plate 3c Annular plate 4 Motor 4a Output shaft of motor 5 Shaft sealing device 6 Collision plate 7 Lid member 7a First opening 7b Second opening 7c Third opening 10a First hot water supply passage 10b Second hot water supply passage 11 Drop water tank 12, 12 ', 12 "pump 13 Battery 14 Control device 15 Start switch 16 Change valve 17 Branch pipe 18 Hot water supply hose 19, 20 Coupler 21 Heater 30 Strainer 31 Coming

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yashiro Yatsuma 2-1-1 Nakajima, Kokurakita-ku, Kitakyushu City Tohoku Kikai Co., Ltd. (72) Inventor Tomohiro Nishi 2-1-1 Nakajima, Kokurakita-ku, Kitakyushu City No. 1 Totou Kikai Co., Ltd. (72) Inventor So Yamamoto 2-1-1 Nakajima, Kokurakita-ku, Kitakyushu City Totou Kiki Co., Ltd.

Claims (8)

[Claims] 1. An impeller composed of a disk-shaped base plate, a motor for rotationally driving the impeller, and an outer radial direction of the impeller,
A plurality of collision plates arranged at intervals in the circumferential direction of the impeller, a hot water supply channel for supplying hot water to the base plate, and a residual portion not sprayed as mist in the hot water discharged from the impeller. A drop water recirculation device that recirculates the drop water to the hot water supply flow channel, wherein the drop water recirculation device has a reflux flow channel whose one end is open below the impeller and the other end is connected to the hot water supply flow channel. A mist generating device, comprising: a pump disposed on the way of the use flow path. 2. An impeller in which one or more annular plates are laminated in parallel with the base plate at a minute distance from each other on a disc-shaped base plate, a motor for rotationally driving the impeller, and an impeller. A plurality of collision plates arranged radially outward of the impeller at intervals in the circumferential direction of the impeller, a hot water supply channel for supplying hot water to the impeller, and a mist in hot and cold water ejected from the impeller. And a drop water recirculation device that recirculates the remaining drop water that has not been sprayed into the hot water supply flow path, and the drop water recirculation device has one end opening below the impeller and the other end connected to the hot water supply flow path. A mist generating device, comprising: a return flow passage; and a pump disposed on the way of the return flow passage. 3. The mist generating device according to claim 1, wherein the drop water recirculation device has a drop water tank for storing the drop water. 4. A level sensor for detecting the water level of the drop water in the drop water tank, and a control device for controlling the output of the pump according to the water level of the drop water in the drop water tank. Item 3. The mist generator according to Item 3. 5. The mist generating device according to claim 1, wherein a strainer is arranged at one end of the return flow passage, which opens downwardly of the impeller. 6. The mist generating device according to claim 5, wherein a combing of a porous material is provided upright around one end of the return flow passage, which is open below the impeller. 7. The mist generating device according to claim 1, wherein the pump is disposed at one end of the return flow passage opening below the impeller. 8. The drop water recirculation device has a heater for heating the drop water.
The mist generator according to any one of 1.