JP5757461B2 - Bath facilities - Google Patents

Description

  The present invention relates to a bathhouse facility, and more particularly, is a bathhouse facility in which a common bathtub used by a large number of bathers and an individual bathtub used by one bather are installed, and more efficiently It relates to bath facilities that can reuse heat.

  In public baths, hot water is circulated and used in a shared bathtub that many bathers use simultaneously in order to effectively use water and heat. In general bath facilities, hot water is extracted from a bathtub, a disinfectant is added to the bath, and after filtration, the bath is returned to the bathtub (Patent Documents 1 to 3).

JP 2009-82918 A JP 2006-192373 A JP-A-9-117382

  By the way, in the public bath, even if the hot water in the communal bathtub is circulated while being disinfected and filtered, it is necessary to replenish the communal bathtub with clean hot water in order to maintain a constant water quality. On the other hand, even in public baths, there is a demand for using a bathtub alone and using clean hot water, and there is a tendency to install a private bathtub separately from the common bathtub. Therefore, from the viewpoint of effective use of resources, it is conceivable to reuse the hot water discharged from the personal bathtub in the common bathtub. However, a relatively small amount of hot water is discharged from a personal bathtub, and since there is no significant difference in water quality between the hot water used in the bathtub and the hot water used in the common bathtub, The hot water in the bathtub has not been repurposed.

  The present invention has been made in view of the above circumstances, and its purpose is a bathhouse facility in which a common bathtub used by a large number of bathers and an individual bath used by a single bather are installed. Another object of the present invention is to provide a bath facility that can supply clean water to an individual bathtub and can reuse water resources and heat more effectively.

  In order to solve the above-described problems, in the present invention, the water in the raw water tank is heated by the hot water supply line and supplied to the common bathtub as hot water, and the hot water collected from the common bathtub is sterilized and filtered by the circulation line. In order to return this to the common bathtub again and to supply even clean water to the individual bathtub, the second hot water supply line produces pure water from the raw tank water and heats it to supply it to the individual bathtub as hot water. I tried to do it. And since the hot water that has been used but clean enough is discharged from the individual bathtub, the hot water collected from the individual bathtub is disinfected and filtered to supply it to the common bathtub. .

That is, the gist of the present invention is a bathing facility equipped with a common bathtub used by many bathers at the same time and an individual bathtub used by one bather, and the water pumped from the raw water tank is kept at a predetermined temperature. A hot water supply line to be heated and supplied to the common tub as hot water, a circulation line for adding a disinfectant to the used hot water extracted from the common tub and filtering the hot water to return to the common tub; A second hot water supply line that purifies the water pumped up from the water tank into pure water by a pure water production apparatus, heats the pure water to a predetermined temperature and supplies it as hot water to the individual bathtub, and is used after being extracted from the individual bathtub A recycle line for adding a disinfectant to the hot water and filtering the hot water and supplying the hot water to the common bathtub, and a filtration device is disposed in each of the circulation line and the recycle line, Up A container body provided with an inlet for water to be treated and a drain outlet for filtered water at the bottom, and a filter medium containing trough that is inserted into the container body and partitions the inside of the container body up and down. In the upper half of the storage bowl, two trays each having a bottom of a lattice structure are stored in a stacked state, and the first sponge sheet is used as a filter medium in the upper tray. The bath facility is characterized in that a second sponge sheet having a lower foam than that of the first sponge sheet is laid as a filter medium on the second tray on the lower side .

  According to the bath facility of the present invention, the second hot water supply line can supply more clean hot water obtained by heating pure water to the individual bathtub, and thereby sufficiently clean hot water is discharged from the individual bathtub. Therefore, the reused line can supply the used hot water extracted from the individual bathtub to the common bathtub, and can effectively reuse water resources and heat.

It is a flowchart which shows the main structures of the bathhouse facility which concerns on this invention. It is an external appearance perspective view which shows the filtration apparatus used for a circulation line and a reuse line. It is a longitudinal cross-sectional view which shows the internal structure of the filtration apparatus of FIG. It is an expanded view which shows the structure of the filter medium accommodation trough used for the filtration apparatus of FIG.2 and FIG.3. It is a flowchart which shows the outline | summary of the pure water manufacturing apparatus used for a 2nd hot-water supply line.

  An embodiment of a bath facility according to the present invention will be described with reference to the drawings. As shown in FIG. 1, the bathing facility of the present invention is a facility in which a shared bathtub 3 used by a large number of bathers and an individual bathtub 7 used by a single bather are installed. It is mainly composed of a circulation line B, a second hot water supply line C, and a reuse line D.

  The hot water supply line A is a line that heats the water pumped from the raw water tank 1 to a predetermined temperature and supplies it as hot water to the common bathtub 3. From the pump 20 and the pump 21 that pumps water from the raw water tank 1 and the pump. A non-twisted filter 23 that filters the water supplied through the pipe 22, a boiler 2 a that heats the water filtered through the non-twisted filter and supplied through the pipe 24, and hot water produced by the boiler is supplied through the pipe 25. And a hot water supply pipe 26 that supplies hot water passed through the heat exchanger to the common bathtub 3.

  The raw water tank 1 is, for example, a water tank having a water storage amount of about 100 to 500 tons, and pumps well water by a pump (not shown), and detects the liquid level of the raw water tank by a float sensor and controls the pump. A constant amount of raw water is always stored. The pump 21 may be a submersible pump installed in the raw water tank 1. The untwisted yarn filter 23 is a container in which a collection of untwisted yarns having an average diameter of 1 to 50 μm is filled in a container as a filter element, and is arranged for removing foreign matters such as SS components and sand in raw water. A plurality of untwisted yarn filters 23 may be installed, the total internal volume of the container is designed to be about 10 to 200 liters, and the total filling amount of the untwisted yarn is about 0.5 to 50 kg.

As the boiler 2a, for example, a plurality of heat transfer pipes are arranged in a circulation path in which water as a heat medium is circulated by a pump, fuel gas is burned by a burner, and the combustion gas and exhaust gas are transferred to the heat transfer pipe. A structure that heats water, which is a heat medium in the circulation path, by passing the water, and secondary-heats water passed through the heat exchanger via a heat exchanger attached to the circulation path No-pressure boiler is used. In the hot water supply line A, the boiler 2a as described above is designed to produce 0.01 to 1 m ³ / min of hot water at 35 to 80 ° C. using normal temperature water filtered by the non-twisted filter 23 as a raw material. The

  The heat exchanger 4 is arranged to use hot water heated by the boiler 2a and to raise the temperature of hot water in the circulation line B described later. As the heat exchanger 4, for example, a thin tube made of stainless steel or titanium having a wall thickness of 0.1 to 0.4 mm and an outer diameter of 5.0 to 5.5 mm is used as an outer tube having an inner diameter of 60 to 200 mm and a length of 900 to 1800 mm. A large number of fluids are inserted into the tube, and one fluid flows from one end of the outer tube to the other end, and the other fluid flows from one end to the other end of the thin tube, so that heat is exchanged between the outer tube side fluid and the thin tube side fluid. A so-called multitubular heat exchanger is used. In the hot water supply line A, the heat exchanger 4 as described above is used, and the temperature of the hot water produced by the boiler 2a is adjusted to 30 to 50 ° C. The hot water supply pipe 26 is usually arranged so as to pour hot water whose temperature is adjusted by the heat exchanger 4 into the upper part of the common bathtub 3.

  The shared bathtub 3 is disposed adjacent to the bathtub body 30 and overflows, the bathtub body 30 having a water storage amount of about 10 to 100 tons, the overflow port 32 provided in a structure cut out at the upper edge of the bathtub body. And a recovery tank 31 for storing hot water overflowing from the mouth 32, and the water surface portion of the hot water stored in the communal bathtub 3 is configured to overflow into the recovery tank 31. An extraction pipe 40 as an upstream end of the circulation line B is connected to the bottom of the recovery tank 31. In addition, the drainage pipe 33 which discharges the hot water which overflowed into the floor from the common bathtub 3 and flowed into the drainage pit is provided on the washing station side.

  The circulation line B is a line in which a disinfectant is added to the used hot water extracted from the common bathtub 3, the hot water is filtered and returned to the common bathtub, and the hot water is extracted from the bottom of the recovery tank 31. Filtered by the pipe 40 and the pump 42, the filtering device 5a for filtering the hot water supplied from the pump through the piping 43, the disinfectant adding device 41 for adding the disinfectant to the hot water flowing through the piping 43, and the filtering device 5a. The heat exchanger 4 is configured such that hot water is supplied through a pipe 44, and the hot water supply pipe 45 that supplies hot water passed through the heat exchanger to the common bathtub 3.

  The disinfectant addition apparatus 41 is an apparatus for adding a chlorine-based disinfectant to hot water. For example, a storage container that contains a 1 to 12% aqueous solution of sodium hypochlorite as a disinfectant and the storage container are attached. An infusion pump, a disinfectant infusion pipe connected to the pipe 43 from the infusion pump, and hot water in the pipe 43 upstream of the disinfectant infusion pipe are extracted as a sample, and the chlorine concentration in the sample is detected. The infusion pump is configured to operate when the chlorine concentration in the sample detected by the chlorine concentration meter is less than the set value. In the circulation line B, the concentration of chlorine in the hot water flowing through the pipe 43 can be kept substantially constant by the disinfectant addition device 41.

  As the filtering device 5a, various conventionally known filtering devices filled with sand and gravel, diatomaceous earth or porous ceramics can also be used. From the viewpoint of maintenance management, a sponge sheet is used as the filtering material. An assembly type device is preferred. 2 to 4 show a preferred embodiment of the filtration device 5a. As shown in FIGS. 2 and 3, the filtration device 5a has an inlet for water to be treated (connection of the piping 43) at the top. A container main body 51 provided with an outlet) and a filtrate water discharge port (a connection port for the piping 44) at the lower part, and a filter medium containing trough 53 that is inserted into the container main body and partitions the inside of the container main body up and down. I have.

The container body 51 is configured, for example, in a rectangular parallelepiped box shape with an internal volume of about 0.1 to 0.4 m ³ . The upper end of the container main body 51 is opened for taking in and out the filter medium accommodating trough 53, and the soot opening is sealed with a removable upper lid 52 for dust prevention. As shown in FIG. 2, a viewing window 512 made of a glass plate or a transparent resin plate is provided on the side surface of the container body 51 in order to inspect the inside. An illumination tool 57 such as a white LED light that irradiates light to the inside of the filter medium housing 53 is attached to the other side surface portion of the container main body 1 in which the viewing window 512 is not provided. Further, as shown in FIG. 3, a protruding piece with a certain width is provided as a hooking portion 51 c on the inner wall upper portion of the container main body 51 in order to suspend the filter medium housing rod 53.

  As shown in FIG. 4, the filter medium storage trough 53 is a container for storing the filter medium (the first sponge sheet 551 and the second sponge sheet 552), and is formed in a bottomed cylindrical shape with a horizontal section, for example, a substantially rectangular shape. The In the filter medium containing trough 53, the lower half 53a including the bottom is made of a porous material such as punching metal or a wire mesh, and the upper half 53b is made of a non-permeable material such as a stainless steel plate. Further, as shown in FIG. 3, the filter medium accommodating trough 53 suspends a later-described receiving tray 54 (second receiving tray 54b), so that a joint portion between the upper half portion 53b and the lower half portion 53a is formed in a stepped portion. Is done. Furthermore, a protruding piece (cage) 53c having a certain width that is hooked on the above-mentioned hooking part 51c (see FIG. 3) is provided on the upper end periphery of the upper half part 53b of the filter medium containing bowl 53.

  As shown in FIG. 4, in the upper half portion 53b of the filter medium accommodating bowl 53, in order to observe the inside, a peep made of a glass plate or a transparent resin plate is provided at a position corresponding to the peep window 512 of the container body 51 described above. A window 532 is provided. In addition, a light projection window 533 made of a glass plate or a transparent resin plate is provided on the other side surface of the upper half portion 53b of the filter medium housing 53 without the viewing window 532 so as to transmit the light of the lighting device 57 described above. Provided. Reference numeral 531 denotes a handle for taking in and out the filter medium accommodating trough 53 in the container main body 51.

  Further, as shown in FIG. 3, the filter medium containing trough 53 has two trays 54 (the first tray 54a and the second tray 54b) having the same shape and the same size stacked in a heavy box shape. It is accommodated so that it can be taken in and out. Each tray 54 accommodates a filter medium (first sponge sheet 551 and second sponge sheet 552), and forms a gap between the first sponge sheet 551 and the second sponge sheet 552 to treat water to be treated. Is arranged so as to transmit uniformly. The saucer body (upper part for accommodating the filter medium) of the saucer 54 is formed in a shallow dish shape that fits loosely into the inner peripheral part of the upper half 53b of the filter medium accommodating bowl 53, and its bottom part has a large lattice or mesh opening. It has a lattice structure consisting of a net.

  In order to observe the state of the filter medium and the turbidity of the hot water, a position corresponding to the viewing window 532 of the above-described filter medium container 53 is provided on one side of each tray 54 and the substantially central part of the other side parallel thereto. A filter medium inspection window 542 made of a glass plate or a transparent resin plate is provided. A lighting window 543 made of a glass plate or a transparent resin plate is provided on the side surface of each receiving tray 54 where the filter medium inspection window 542 is not provided in order to introduce light from the illuminator 57.

  A skirt portion 541 is provided on the lower end side of each saucer 54 (below the bottom of the saucer body) to be fitted to the inner periphery of the saucer body. The skirt portion 541 of the upper first tray 54a functions as a fitting portion for the tray body of the second tray 54b on the lower side, whereby the trays 54 can be stacked one above the other. And the skirt part 541 of the 1st saucer 54a presses the periphery of the filter medium (2nd sponge sheet 552) laid in the lower 2nd saucer 54b, and regulates the loose movement of the said filter medium. Therefore, when the trays 54 are stacked on the top and bottom, deformation of the filter medium (second sponge sheet 552) due to the water flow can be prevented.

  On the other hand, the skirt portion 541 of the lower second receiving tray 54 b is adapted to be fitted inside the lower half portion 53 a of the filter medium accommodating bowl 53. Therefore, as shown in FIG. 3, when the second saucer 54b is inserted, the bottom portion of the saucer 54 and the lower step portion 53a and the upper half portion 53b of the filter medium accommodating trough 53 A stepped portion with the skirt portion 541 is hooked, and as a result, the second tray 54 b can be suspended in the filter medium accommodating trough 53. The skirt portion 541 has a filter medium so that the filter medium inspection window 542 and the daylighting window 543 of the lower second tray 54b are not blocked when the first tray 54a is stacked on the second tray 54b. Each part corresponding to the inspection window 542 and the daylighting window 543 is opened.

  As shown in FIGS. 3 and 4, the first sponge sheet 551 is accommodated in the upper first tray 54 a, and the second sponge 54 b in the lower stage is more than the first sponge sheet 551. A fine, that is, low-foaming second sponge sheet 552 is accommodated. The first sponge sheet 551 is a filter medium for removing relatively large foreign substances in the hot water, specifically, lint such as hair and towels, skin pieces, etc., and the second sponge sheet 552 is in the hot water. It is a filter medium for removing even smaller foreign matters, specifically dirt, slips, turbidity and the like.

As the sponge sheets 551 and 552, sponge sheets excellent in extensibility and water permeability made of various synthetic resins such as polyurethane, vinyl chloride, and polyethylene are used. The bulk density of the first sponge sheet 551 is about 30-60 kg / m ³ , the bulk density of the second sponge sheet 552 is about 50-80 kg / m ³ , and the thickness of each sponge sheet 551, 552 (water absorption The normal thickness) is about 3 to 10 mm. The density of the first sponge sheet 551 and the second sponge sheet 552 is set in the above range, and the foreign matter to be captured is distinguished by the size, so that the filtration function and durability are improved, and the processing flow rate is sufficiently increased. Can be secured.

  In addition, a porous cover 56 is dropped and accommodated in the first receiving tray 54a so as to cover the first sponge sheet 551 as a cover. The lid | cover 56 is comprised by punching metal or a metal net | network, etc. with a shallow inverted saddle shape. The lid 56 presses the periphery of the first sponge sheet 551 laid on the first tray 54a, restricts the movement of the sponge sheet due to the water flow, prevents deformation, and relatively large foreign matter, specifically Suppresses the inflow of the packaging container, the lid of the packaging container, the packaging bag, the paper piece, etc. into the filter medium containing trough 53, and prevents the first sponge sheet 551 from being blocked.

  When assembling the filtration device 5a, the first sponge sheet 551 and the second sponge sheet 552 are stacked on the filter medium accommodating bowl 53 in a state where the first tray 54a and the second tray 54b are stacked. Then, the lid 56 is dropped into the first tray 54 a, such a filter medium housing 53 is placed in the container body 51, and the container body 51 is covered with the upper lid 52. In the assembled filtration device 5a, the hot water collected from the common bathtub 3 flows from the inlet (pipe 43) as the treated water by the operation of the circulation line B, and is filtered through the filter medium containing trough 53. The filtered water is discharged from the discharge port (pipe 44).

  On the other hand, in the daily inspection, the inspection window 512 on the side surface of the container main body 51, the inspection window 532 on the upper half 53b of the filter medium accommodating bowl 53, and the filter medium inspection windows 542 of the first tray 54a and the second tray 54b. Through this, the surface of the first sponge sheet 551 and the surface of the second sponge sheet 552 can be observed, and the deterioration state thereof can be easily confirmed. In particular, by illuminating the inside of each tray 54 with the illuminating device 57, the deterioration state of the filter medium and the turbidity of the hot water on the upper side (upstream side) of the filter medium can be reliably visually recognized regardless of the installation location. When the deterioration of the filter medium is confirmed, the upper lid 52 of the container main body 51 is removed, the filter medium containing trough 53 is pulled out from the container main body 51, and the cover 56, the first tray 54a, and the second tray are removed. The first sponge sheet 551 and the second sponge sheet 552 can be easily replaced by removing the 54b from the filter medium container 53, and the filter medium container 53, the first tray 54a, the second tray 54b, the lid 56 can be washed respectively.

  When the filtration device 5a as described above is used, it is possible to immediately check the degree of contamination of the filter medium and the replacement of the filter medium is extremely easy, compared to a conventional filtration apparatus using gravel as a filter medium. The water quality of the bathtub 3 can be kept in a cleaner state. The filtration device 5a may be used by arranging a plurality of units in parallel according to the amount of treatment. Also, a water inlet and a water outlet are provided at the lower and upper parts of the container body 51, respectively, and the flow path By providing the switching unit, the filter medium may be back-washed.

  In the circulation line B, hot water filtered by the filtering device 5a is supplied to the heat exchanger 4. That is, in the bath facility of the present invention, hot water pumped up from the raw water tank 1 in the hot water supply line A and preheated to 35 to 80 ° C. in the boiler 2a is passed through the heat exchanger 4 and shared in the circulation line B. For example, hot water of 20 to 45 ° C. recovered from the bathtub 3 is passed through the heat exchanger 4 to exchange heat, and the hot water supply pipe 26 of the hot water supply line A and the hot water supply pipe 45 of the circulation line B are exchanged. The hot water at 30 to 50 ° C. is supplied to the common bathtub 3. Thereby, the hot water of the circulation line B can also be heated with one boiler 2a. Note that the hot water supply pipe 45 of the circulation line B is normally connected so as to supply hot water whose temperature is adjusted by the heat exchanger 4 to the bottom side of the common bathtub 3.

  The second hot water supply line C is a line that purifies the water pumped from the raw water tank 1 into pure water by the pure water producing device 6 and heats the pure water to a predetermined temperature to supply it to the individual bathtub 7 as hot water. It is obtained by a pumping pipe 60 and a pump 61 for pumping water from the raw water tank 1, a pure water production apparatus 6 for producing pure water by filtering water supplied from the pump through a pipe 62, and the pure water production apparatus. And the pure water storage tank 64 which stores the pure water supplied through the piping 63, the piping 65 and pump 66 which take out the pure water of the said pure water storage tank, and the boiler 2b which heats the pure water supplied through the piping 67 from the said pump And a hot water supply pipe 68 for supplying hot water produced by the boiler to the individual bathtub 7. The pump 61 may be a submersible pump installed in the raw water tank 1.

  As the pure water production device 6, a filtration device using a reverse osmosis membrane is used. The basic structure of a pure water production apparatus using a reverse osmosis membrane is well known. For example, as shown in FIG. 5, the pure water production apparatus 6 includes a sterilization chlorine addition device 601, a non-twisted yarn filter 602, It is mainly composed of a pretreatment device in which an activated carbon filter 603 and a guard filter 604 are sequentially arranged, and a reverse osmosis membrane module 606.

  The chlorine addition device 601 is composed of, for example, a container for storing granular salt, a metering pump (not shown) attached to the container, an injection pipe connected to the pipe 62 from the container, and the like. By supplying a trace amount of water to the container, the salt in the container is dissolved, and the chlorine component is added to the raw water in the pipe 62 through the injection pipe. The untwisted yarn filter 602 is a non-twisted yarn aggregate having an average diameter of 0.5 to 10 μm filled in a container as a filter element, and is disposed to remove foreign matters such as SS components and sand in raw water. A plurality of untwisted yarn filters 602 may be installed, the total internal volume of the container is about 10 to 200 liters, and the total filling amount of untwisted yarn is about 0.5 to 50 kg.

The activated carbon filter 603 is configured by accommodating activated carbon having an average particle diameter of 4 to 60 mm in a container, and is disposed to remove residual chlorine in the raw water. The inner volume of the container of the activated carbon filter 603 is about 0.01 to ² m ³ and the filling amount of the activated carbon is about 5 to 1000 kg. The guard filter 604 is configured by filling a container with activated carbon having an average particle diameter of 4 to 60 mm, and is disposed to remove the finer fine particles in the raw water and protect the reverse osmosis membrane module 606. The inner volume of the container of the guard filter 604 is about 10 to 200 liters, and the filling amount of activated carbon is about 0.5 to 50 kg. Note that a carbon filter may be used instead of the activated carbon filter 603 and the guard filter 604.

  The reverse osmosis membrane module 606 prevents the permeation of electrolytes such as salt contained in the raw water and hardly soluble substances such as silica components and hardness components by the reverse osmosis membrane (RO) and allows only moisture to permeate. The raw water is separated into the salt-treated permeated water and concentrated water, and the two regions divided by the reverse osmosis membrane and the reverse osmosis membrane, that is, the supply water region to which the water to be treated and the separation are separated And a permeated water region for collecting the permeated water. Examples of the material for the reverse osmosis membrane include cellulose acetate, polyamide, crosslinked polyamine, crosslinked polyether, and sulfonated polysulfone. Examples of the structure of the membrane element include a spiral type, a hollow fiber type, and a tubular type.

  In the pure water manufacturing apparatus 6 described above, after adding a chlorine component by the chlorine adding apparatus 601 to the raw water supplied through the pipe 62 by the pump 61, the raw water is supplied to the untwisted yarn filter 602. The filtered water filtered by the non-twisted yarn filter 602 is supplied to the activated carbon filter 603 through the pipeline 611, and the concentrated water separated by the non-twisted yarn filter 602 is discharged out of the system through the pipelines 619 and 626. The filtered water filtered by the activated carbon filter 603 is supplied to the sand filter 604 through the pipe 612, and the concentrated water separated by the activated carbon filter 603 is discharged out of the system through the pipes 619 and 626. Further, the filtered water filtered by the guard filter 604 is supplied to the reverse osmosis membrane module 606 through the pipelines 613 and 617, the boosting pump 605 and the pipeline 618. The concentrated water separated by the guard filter 604 is discharged out of the system through the pipe lines 619 and 626 as described above.

  The reverse osmosis membrane module 606 purifies pure water from which salts, other impurities, and bacteria are completely removed by permeating the reverse osmosis membrane. Pure water obtained by the reverse osmosis membrane module 606 is taken out from the pipe 620 and supplied to the pure water storage tank 64 through the pipe 63. The concentrated water separated by the reverse osmosis membrane module 606 is discharged out of the system through the pipe line 623 and the pipe line 626 described above. In the second hot water supply line C, the pure water production apparatus 6 described above is used, and pure water having an electric conductivity of 0.15 to 15 S / m or pure water having an impurity concentration of 0.1 to 10 ppm, preferably electric conductivity. Pure water having a concentration of 0.15 to 0.80 S / m or an impurity concentration of 0.1 to 0.5 ppm is produced. In FIG. 5, reference numerals 614 and 624 indicate electromagnetic valves, reference numerals 621 and 625 indicate check valves, and reference numerals 616 and 622 indicate water quality meters that measure the electrical conductivity of water.

The pure water storage tank 64 is a water tank having a water storage amount of about 1 to 5 tons that stores the pure water produced by the pure water production apparatus 6. The liquid level is detected by a float sensor and the operation of the pure water production apparatus 6 is performed. By controlling this, a predetermined amount of pure water is always stored. The boiler 2b is a non-pressure boiler similar to the boiler 2a of the hot water supply line A described above, and hot water at 35 to 80 ° C. is made 0.01 to 1 m ³ using pure water at room temperature supplied from the pure water storage tank 64 as a raw material. Designed to produce / min. The hot water supply pipe 68 is usually connected to an upper part of the individual bathtub 7 or a faucet attached to the individual bathtub 7 and is connected to a shower attached to the individual bathtub 7.

  For example, 1 to 10 individual bathtubs 7 are installed. As the individual bathtub 7, since the pure water having a strong penetrating power is used, a tank formed by FRP is usually used from the viewpoint of preventing water leakage. The shape of the individual bathtub 7 can be designed to an appropriate shape, but since the hot water is exchanged for each bathing, the size of the individual bathtub 7 is usually from the viewpoint of efficient water use and energy saving. It is designed to have a width of about 65 to 75 cm, a length of about 90 to 120 cm, and a depth of about 50 to 60 cm. A drainage pipe 71 for discharging hot water that has overflowed from the individual bathtub 7 to the floor and has flowed into the drainage pit is provided on the washing station side.

  The reuse line D is a line in which a disinfectant is added to the used hot water extracted from the individual bathtub 7 and the hot water is filtered and supplied to the common bathtub 3. Hot water is extracted from the bottom of the individual bathtub 7. The extraction pipe 80 and the pump 82, the filtration device 5b for filtering the hot water supplied from the pump through the pipe 83, the disinfectant addition device 81 for adding the disinfectant to the hot water flowing through the pipe 83, and the filtration device 5b are filtered. A relay storage tank 85 for storing hot water supplied through the pipe 84, a pumping pipe 86 and a pump 88 for pumping up the hot water in the relay storage tank, and a pipe for supplying hot water fed by the pump to the circulation line B. 89.

  The disinfectant addition device 81 is the same device as the disinfectant addition device 41 of the circulation line B described above, and includes a storage container for a sodium hypochlorite aqueous solution, a chlorine injection pipe, an injection pump, and a chlorine concentration meter. . Moreover, as the filtration apparatus 5b, the apparatus shown to FIGS. 2-4 similar to the filtration apparatus 5a of the above-mentioned circulation line B is used.

  That is, the filtration device 5b includes a container body 51 having an inlet for treated water at the top and a drain for filtered water at the bottom, and the container body is inserted into the container body to divide the inside of the container body up and down. A filter medium storage trough 53, and in the upper half of the filter medium storage trough, two trays 54 each having a bottom portion of a lattice structure are stored in a stacked state in a heavy box shape. 54a, a first sponge sheet 551 is laid as a filter medium, and a second sponge sheet 552 having a lower foam than the first sponge sheet 551 is laid as a filter medium in the lower second tray 54b. Yes. In the above filtering device 5b, the deterioration state of the filter medium and the turbidity of hot water can be surely confirmed, and when the filter medium becomes dirty, the filter medium can be easily replaced and the parts can be washed.

  The relay storage tank 85 is an insulated water tank having a water storage amount of about 0.5 to 3 tons for temporarily storing hot water collected from the individual bathtub 7 and filtered by the filtration device 5b. The pump 88 for pumping hot water from the relay storage tank 85 detects the level of hot water in the relay storage tank with a float sensor, and operates when the hot water storage amount is equal to or greater than a preset lower limit amount. Yes. The relay storage tank 85 is configured to be discharged out of the system from a hover flow pipe (not shown) provided in the upper part when the hot water storage amount exceeds the upper limit amount. Further, as shown in FIG. 1, the pumping pipe 86 is provided with a hollow fiber membrane filter 87 formed by filling a container with a hollow fiber as a filter element in order to remove foreign substances such as SS components and sand in the hot water. You may be dressed.

  In the present invention, since the used hot water stored in the relay storage tank 85 is used in the common bathtub 3, the piping 89 on the discharge side of the pump 88 that pumps the hot water from the relay storage tank 85 is the filtration device for the circulation line B described above. It is connected to a pipe 44 on the downstream side of 5a. That is, the reuse line D is connected to the circulation line B on the upstream side of the heat exchanger 4. Thereby, the hot water and heat discharged from the individual bathtub 7 can be effectively reused in the common bathtub 3.

  Next, a method for operating the bath facility of the present invention will be described. In the bath facility according to the present invention, hot water is produced in the hot water supply line A and supplied to the common bathtub 3, hot water in the common bathtub 3 is circulated through the circulation line B, and pure water is produced in the second hot water supply line C. And hot water is manufactured from the said pure water, is supplied to the separate bathtub 7, and the hot water of the separate bathtub 7 is reused by the separate bathtub 7 by the reuse line D.

  Specifically, in the hot water supply line A, raw water is pumped from the raw water tank 1 through the pumping pipe 20, the pump 21, and the pipe 22, and filtered through the non-twisted yarn filter 23, thereby allowing foreign matters such as SS components and sand in the raw water. Remove. Next, the filtered water is supplied from the pipe 24 to the boiler 2a and heated to produce, for example, 80 ° C. hot water. The obtained hot water is passed through the pipe 25 to the heat exchanger 4 to release a part of the heat to the hot water in the circulation line B, thereby adjusting the temperature of the hot water to 50 ° C., for example. Then, such hot water is supplied from the hot water supply pipe 26 to the common bathtub 3. After first filling the common bathtub 3 with hot water, the amount of hot water supplied to the common bathtub 3 is reduced to some extent according to the number of users, and a constant flow of hot water is supplied to the common bathtub 3.

  In the circulation line B, used hot water is extracted from the common bathtub 3 through the extraction pipe 40, the pump 42 and the pipe 43, and the disinfectant is added to the hot water in the pipe 43 at a predetermined flow rate by the disinfectant addition device 41. Next, such hot water is supplied to the filtration device 5a to perform filtration. In the filtering device 5a, foreign substances such as the skin in hot water are removed by the first sponge sheet 551 and the second sponge sheet 552, which are filter media. The filtered hot water is passed through the pipe 44 to the heat exchanger 4 and the temperature of the hot water is adjusted to, for example, 50 ° C. by heat exchange with the hot water in the hot water supply line A. Then, such hot water is supplied from the hot water supply pipe 45 to the common bathtub 3.

  On the other hand, in the second hot water supply line C, the raw water is pumped from the raw water tank 1 through the pumping pipe 60, the pump 61 and the pipe 62, and supplied to the pure water production apparatus 6. In the pure water production device 6, the raw water supplied from the pipe 62 is sterilized by adding chlorine by the chlorine adding device 601, and then sequentially filtered by the non-twisted yarn filter 602, the activated carbon filter 603 and the guard filter 604. As a result, foreign matters such as SS components and sand in the raw water are removed. The filtered water is pressurized by the pump 605 and supplied to the reverse osmosis membrane module 606, and the electrolyte and silica components are removed to purify the purified water. Next, the obtained pure water is temporarily stored in the pure water storage tank 64 through the pipe 63. The pure water in the pure water storage tank 64 is pumped up through the pipe 65 and the pump 66 as necessary, supplied to the boiler 2b through the pipe 67, and heated by the boiler to produce, for example, 50 ° C. hot water. Then, such hot water is supplied from the hot water supply pipe 68 to the individual bathtub 7.

  In the reuse line D, used hot water is extracted from the individual bathtub 7 after use through the extraction pipe 80, the pump 82 and the pipe 83, and the disinfectant is added to the hot water in the pipe 83 by the disinfectant addition device 81. . Subsequently, such hot water is supplied to the filtration device 5b to perform a filtration process. In the filtering device 5b, foreign matter such as the skin in hot water is removed by the first sponge sheet 551 and the second sponge sheet 552, which are filter media, in the same manner as the filtering device 5a. The filtered hot water is temporarily stored in the relay storage tank 85 through the pipe 84. The hot water in the relay storage tank 85 is pumped up through the pumping pipe 86 and the pump 88 and, after removing foreign matter by the hollow fiber membrane filter 87, is sent to the pipe 44 of the circulation line B through the pipe 89. It is mixed with hot water and reused in the shared bathtub 3.

  As described above, in the bath facility of the present invention, the water in the raw water tank 1 is heated by the hot water supply line A and supplied to the common bathtub 3 as hot water, and the hot water collected from the common bathtub 3 is disinfected by the circulation line B. While filtered and returned to the common bathtub 3 again, pure water is produced from the water in the raw water tank 1 by the second hot water supply line C, and this is heated and supplied to the individual bathtub 7 as clean hot water. At the same time, the reused line D collects used but sufficiently clean hot water discharged from the individual bathtub 7, disinfects and filters the hot water, and supplies the hot water to the shared bathtub 3 from the circulation line B. . Therefore, according to the bath facility of the present invention, clean water can be supplied to the individual bathtub 7 by the second hot water supply line C, and sufficiently clean hot water is discharged from the individual bathtub 7, so that With the use line D, hot water used in the individual bathtub 7 can be supplied to the common bathtub 3, and as a result, water resources and heat can be effectively reused.

DESCRIPTION OF SYMBOLS 1: Raw water tank 2a: Boiler 2b: Boiler 23: Untwisted thread filter 3: Joint bathtub 30: Bathtub main body 31: Collection tank 4: Heat exchanger 41: Disinfectant addition apparatus 5a: Filter apparatus 5b: Filter apparatus 51: Container body 512: Viewing window 53: Filter medium containing bowl 54: Receptacle 54a: First tray 54b: Second tray 551: First sponge sheet (filter medium)
552: Second sponge sheet (filter medium)
57: Lighting fixture 6: Pure water production device 601: Chlorine addition device 602: Non-twisted yarn filter 603: Activated carbon filter 604: Guard filter 606: Reverse osmosis membrane module 64: Pure water storage tank 7: Individual bathtub 81: Disinfectant addition device 85 : Relay storage tank 87: Hollow fiber membrane filter A: Hot water supply line B: Circulation line C: Second hot water supply line D: Reuse line

Claims (4)

A bathing facility with a shared bathtub (3) used by many bathers at the same time and an individual bathtub (7) used by one bather, and the water drawn from the raw water tank (1) is at a predetermined temperature. A hot water supply line (A) that supplies water to the common bathtub (3) as hot water, and a disinfectant is added to the used hot water extracted from the common bathtub (3), and the hot water is filtered and the common bathtub (3 ) To the recirculation line (B) returning to the raw water tank (1), and the water pumped up from the raw water tank (1) is purified to pure water by the pure water production device (6), and the pure water is heated to a predetermined temperature to obtain individual baths ( The second hot water supply line (C) to be supplied to 7) and the reuse that is added to the used hot water extracted from the individual bathtub (7), and that the hot water is filtered and supplied to the common bathtub (3) and a line (D), the circulation line (B) and recycling line (D), filtration Apparatuses (5a) and (5b) are arranged, respectively, and the filtration devices (5a) and (5b) are container bodies having an inlet for treated water at the top and a drain for filtered water at the bottom ( 51) and a filter medium containing trough (53) that is inserted into the container main body and partitions the inside of the container main body up and down, and in the upper half of the filter medium containing trough, A tray (54) is stored in a stacked state in a heavy box shape, and a first sponge sheet (551) is laid as a filter medium on the upper first tray (54a), and a lower second tray (54b) A bath facility characterized in that a second sponge sheet (552) that is lower in foam than the first sponge sheet (551) is laid as a filter medium .   The bathhouse facility according to claim 1, wherein the pure water production device (6) of the second hot water supply line (C) is a filtration device using a reverse osmosis membrane.   The bathhouse facility according to claim 1 or 2, further comprising a heat exchanger (4) for exchanging heat between the hot water obtained in the hot water supply line (A) and the hot water filtered in the circulation line (B).   The bath facility according to claim 3, wherein the reuse line (D) is connected to the circulation line (B) on the upstream side of the heat exchanger (4).

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