JP5717288B2 - Bath facilities that can supply drinking water - Google Patents

Description

  TECHNICAL FIELD The present invention relates to a bathing facility, and more specifically, is a bathing facility in which a common bathtub used by many bathers at the same time and an individual bathtub used by one bather are installed, and water resources for bathing are used. The present invention relates to bath facilities that can be supplied as drinking water.

  In public baths, in order to make effective use of water and heat, hot water is circulated and used in a shared bathtub that many bathers use simultaneously. 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 public baths, there is a request to use hot water in the bathtub alone and to use clean water, even if the hot water in the common bathtub is sterilized and filtered while being used. Tend to install. On the other hand, from the viewpoint of securing water resources in emergencies, diversion of water used for baths to drinking water is desired.

  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. An object of the present invention is to provide a bath facility that can supply clean water to an individual bathtub and can use water resources more effectively for beverages.

  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. In order to secure drinking water in an emergency, the produced pure water is temporarily stored in the second hot water supply line and can be supplied outside the system for drinking.

That is, the gist of the present invention is a bathhouse facility in which a shared bathtub (3) used by many bathers at the same time and an individual bathtub (7) used by one bather are provided, and the raw water tank (1 The hot water line (A) that heats the water pumped up from () to a predetermined temperature and supplies it as hot water to the common bathtub (3), and disinfectant is added to the used hot water drawn from the common bathtub (3) and the hot water The circulating line (B) for filtering the water to the common bathtub (3) and the water pumped from the raw water tank (1) are purified to pure water by the pure water production device (6) and the pure water is brought to a predetermined temperature. And a second hot water supply line (C) for heating and supplying the individual bathtub (7) as hot water, the pure water production device (6) is a filtration device using a reverse osmosis membrane , and the second The hot water supply line (C) stores pure water purified by the pure water production device (6). Reservoir (64) is provided, the pure water reservoir, pure water supply means 9 is provided for supplying pure water out of the system, moreover, the hot water obtained in the hot water supply line (A) circulating The bath facility is provided with a heat exchanger (4) for exchanging heat with hot water filtered in the line (B) .

  According to the bath facility of the present invention, clean water obtained by heating pure water can be supplied to the individual bathtub by the second hot water supply line, and can be stored in the pure water storage tank in the second hot water supply line. Since the pure water can be supplied outside the system by the pure water supply means, it can be immediately used as drinking water in an emergency.

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 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 and the hot water is filtered and returned to the common bathtub again. 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. As shown in FIGS. 2 and 3, the filtration device 5 a is provided with an inlet for treated water (a connection port for the piping 43) at the upper portion and a discharge port for the filtered water (a connection port for the piping 44) at the lower portion. A container body 51, and a filter medium containing gutter 53 that is inserted into the container body and partitions the inside of the container body up and down. The filter medium containing trough 53 is hooked with a projecting piece 53c provided as a hook on the upper edge of the filter medium containing bowl on the hook 51c provided as an overhang on the inner wall upper part of the container body 51. The container body 51 is suspended.

  In the filter medium containing trough 53, the lower half including the bottom is made of a porous material, and the upper half with the upper end opened is made of a water-impermeable material. In the upper half part of the filter medium accommodating bowl 53, two trays 54 each having a bottom part of a lattice structure are accommodated in a stacked state in a heavy box shape. A first sponge sheet 551 is laid as a filter medium on the upper first tray 54a, and a second foam sheet having a lower foam than the first sponge sheet 551 is placed on the lower second tray 54b. 552 is laid as a filter medium. And the filter medium inspection window is each provided in the equivalent site | part of each side surface of the 1st saucer 54a and the 2nd saucer 54b, and the side part of the container main body 51 and the upper half part of the filter medium accommodation trough 53 are provided. Are provided with a viewing window 512 (the viewing window of the filter medium housing 53 is not shown) at a position overlapping with each of the filter medium inspection windows.

  In addition, an illuminating device 57 such as a white LED light that irradiates light inside the filter medium housing 53 is attached to the other side surface portion of the container body 1 in which the viewing window 512 is not provided. Reference numeral 52 denotes an upper lid of the container main body 51, reference numeral 56 denotes a porous structure lid that is dropped into the first receiving tray 54 a, and reference numeral 531 denotes the above-mentioned when the filter medium containing trough 53 is taken in and out of the container main body 51. A handle for lifting the filter medium containing rod is shown.

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 lid 56 is a filter medium that removes large foreign matters, specifically packaging containers, lids of packaging containers, packaging bags, paper pieces, and the like. The first sponge sheet 551 is a relatively large foreign matter in hot water, specifically Is a filter medium for removing lint such as hair and towels, skin pieces, etc., and the second sponge sheet 552 removes even smaller foreign substances in the hot water, specifically dirt, slips, turbidity, etc. It is a filter medium for

  In the filtering device 5a described above, the first sponge is passed through the viewing window 512 on the side surface of the container body 51, the viewing window of the filter medium accommodating bowl 53, and the filter medium inspection windows of the first tray 54a and the second tray 54b. Each surface of the sheet 551 and the second sponge sheet 552 can be observed, and the deterioration state thereof can be easily confirmed. When the filter medium is deteriorated, 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 receiving tray 54a, and the second receiving tray 54b are removed. The first sponge sheet 551 and the second sponge sheet 552 can be easily replaced by taking out from the storage bowl 53, and the filter medium storage bowl 53, the first receiving tray 54a, the second receiving tray 54b, and the lid 56 are respectively replaced. Can be 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, 20 to 45 ° C. hot water recovered from the bathtub 3 is passed through the heat exchanger 4 to exchange heat, and from 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. Hot water of 30 to 50 ° C. is supplied to the common bathtub 3 respectively. 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.

  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. 4, 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 salt-treated permeated water and concentrated water, and separated into two regions separated by the reverse osmosis membrane and the reverse osmosis membrane, that is, the region to which the water to be treated is supplied. It consists of a region where permeate is collected. 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 carbon filter 603 through the pipe line 611, and the concentrated water separated by the non-twisted yarn filter 602 is discharged out of the system through the pipe lines 619 and 626. The filtered water filtered by the carbon filter 603 is further supplied to the carbon filter 604 through the pipe line 612, and the concentrated water separated by the carbon filter 603 is discharged out of the system through the pipe lines 619 and 626. Further, the filtered water filtered by the carbon 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 carbon 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 mS / m or pure water having an impurity concentration of 0.1 to 10 ppm, preferably electric conduction Pure water having a rate of 0.15 to 0.80 mS / m or pure water having an impurity concentration of 0.1 to 0.5 ppm is produced. In FIG. 4, reference numerals 614 and 624 indicate electromagnetic valves, reference numerals 621 and 625 indicate check valves, and reference numerals 616 and 622 indicate water meters that measure the electrical conductivity of water.

As shown in FIG. 1, the pure water storage tank 64 is a water tank having a storage amount of about 1 to 5 tons that stores the pure water produced by the pure water production apparatus 6. By controlling the operation of the pure water production apparatus 6, 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.

  In the bathhouse facility of the present invention, a pure water storage tank 64 for storing pure water purified by the pure water production apparatus 6 is provided in the second hot water supply line C so that water resources for bathing can be used for beverages. The pure water storage tank is provided with pure water supply means 9 for supplying pure water outside the system. That is, the pure water storage tank 64 is configured such that the stored pure water can be directly extracted to the outside by the pure water supply means 9.

  As the pure water supply means 9, a means for supplying the pure water in the pure water storage tank 64 out of the system using the pump 66 or a water pressure (head difference) of pure water stored in the pure water storage tank 64 is used. And a means for supplying it outside the system. For example, as illustrated in FIG. 1, the pure water supply unit 9 using the pump 66 includes a pipe 91, a sterilization filter 92, and an extraction pipe 93 that are branched from the pipe 67 via the switching valve 90. Composed. Further, although not shown, the pure water supply means 9 using water pressure is directly attached to a pipe provided by branching from the pipe 65 via a switching valve or to the bottom of the pure water storage tank 64 and via an on-off valve. Consists of pipes for extraction.

  Furthermore, in the present invention, since pure water in the pure water storage tank 64 is used as drinking water, an ultraviolet lamp 64v may be provided inside the pure water storage tank 64. As the ultraviolet lamp 64v, a lamp such as a high-pressure mercury lamp, a metal halide lamp, a xenon lamp, or a xenon-mercury lamp is used. The output of the ultraviolet lamp 64v is about 0.1 to 10 kW in the case of a high-pressure mercury lamp. The ultraviolet lamp 64v is arranged along the height direction of the pure water storage tank 64 from the viewpoint of improving the irradiation efficiency of ultraviolet rays and facilitating maintenance and management, and in order to avoid direct contact with pure water, quartz is used. It is inserted into an outer tube made of hard glass or the like. The sterilization filter 92 is a hollow fiber membrane filter for further removing germs mixed from pure air during storage.

  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. . Further, as the filtering device 5b, the same device as shown in FIGS. 2 and 3 as the filtering device 5a of the circulation line B described above is used.

  That is, the filtration device (5b) includes a container main body (51) having an inlet for treated water at the top and a discharge outlet for filtered water at the bottom, and the container main body inserted into the container main body. And a filter medium containing bowl (53) for partitioning the upper and lower parts, and in the upper half of the filter medium containing bowl, two trays (54) each having a bottom of a lattice structure are housed in a stacked state in a heavy box shape. A first sponge sheet (551) is laid as a filter medium on the first tray (54a) on the upper side, and a first sponge sheet (551) is placed on the second tray (54b) on the lower stage. Also, a low foaming second sponge sheet (552) is laid as a filter medium. 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. The pumping pipe 86 may be provided with a hollow fiber membrane filter 87 in which a hollow fiber is used as a filter element to fill a container in order to remove germs mixed in hot water from the atmosphere.

  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 is filtered by the non-twisted yarn filter 23. 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. 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 apparatus 6, the raw water supplied from the pipe 62 is sterilized by adding chlorine by the chlorine adding apparatus 601, and then sequentially filtered by the non-twisted filter 602 and the carbon filters 603 and 604. Remove foreign substances in raw water. The filtered water is pressurized by the pump 605 and supplied to the reverse osmosis membrane module 606, where the electrolyte, the silica component and the hardness component are removed and the purified water is purified. 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. 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.

  Further, the pure water storage tank 64 of the second hot water supply line C stores pure water for bath used in the individual bathtub 7, so that in the event of an emergency where there is a shortage of drinking water, the pure water in the pure water storage tank 64 is used. Can be extracted out of the system by pure water supply means 9 and used as drinking water. That is, when using pure water in the pure water storage tank 64 as drinking water, by operating the switching valve 90 and switching the downstream flow path from the pump 66 to the pipe 91, the sterilization filter 92, and the extraction pipe 93, Pure water is supplied to containers and tank trucks outside the system through the extraction pipe 93.

  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. can do. The second hot water supply line C is provided with a pure water storage tank 64 for storing pure water purified by the pure water production apparatus 6, and the pure water storage tank 64 is supplied with pure water outside the system. Since the pure water supply means 9 is provided, in an emergency, the pure water in the pure water storage tank 64 can be immediately supplied as drinking water. In other words, according to the present invention, water for bathing can be effectively used for beverages.

  Further, in the bathhouse facility of the present invention, the reused line D collects the used but sufficiently clean hot water discharged from the individual bathtub 7, and disinfects and filters the hot water from the circulation line B. Since it supplies to the common bathtub 3, a water resource and heat can be reused effectively.

DESCRIPTION OF SYMBOLS 1: Raw water tank 2a: Boiler 2b: Boiler 3: Joint bathtub 30: Bathtub main body 31: Collection tank 4: Heat exchanger 41: Disinfectant addition apparatus 5a: Filtration apparatus 5b: Filtration apparatus 6: Pure water production apparatus 606: Reverse Osmosis membrane module 64: Pure water storage tank 64v: UV lamp 7: Individual bathtub 81: Disinfectant addition device 85: Relay storage tank 9: Pure water supply means A: Hot water supply line B: Circulation line C: Second hot water supply line D: Re Use line

Claims (3)

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 ( 7) to the second hot water supply line (C) , the pure water production apparatus (6) is a filtration device using a reverse osmosis membrane , and the second hot water supply line (C) includes: A pure water storage tank (64) for storing pure water purified by the pure water production apparatus (6); The the pure water storage tank, the outside of the system is pure water supply means (9) is provided for supplying pure water, the addition and filtered with the resulting hot water and circulation line (B) in the hot water supply line (A) A bathing facility comprising a heat exchanger (4) for exchanging heat with hot water . The bathhouse according to claim 1 , further comprising a reuse line (D) for adding a disinfectant to the used hot water extracted from the individual bathtub (7) and filtering the hot water and supplying the hot water to the common bathtub (3). Facility. The bath facility according to claim 2 , 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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