WO2011142266A1 - Fontaine à eau potable - Google Patents

Fontaine à eau potable Download PDF

Info

Publication number
WO2011142266A1
WO2011142266A1 PCT/JP2011/060288 JP2011060288W WO2011142266A1 WO 2011142266 A1 WO2011142266 A1 WO 2011142266A1 JP 2011060288 W JP2011060288 W JP 2011060288W WO 2011142266 A1 WO2011142266 A1 WO 2011142266A1
Authority
WO
WIPO (PCT)
Prior art keywords
drinking water
porous membrane
air filter
water server
range
Prior art date
Application number
PCT/JP2011/060288
Other languages
English (en)
Japanese (ja)
Inventor
健太郎 石鍋
和正 守本
Original Assignee
エア・ウォーター株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by エア・ウォーター株式会社 filed Critical エア・ウォーター株式会社
Priority to CN201180011912.3A priority Critical patent/CN102781814B/zh
Priority to KR1020127022831A priority patent/KR101757500B1/ko
Publication of WO2011142266A1 publication Critical patent/WO2011142266A1/fr

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
    • B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
    • B67D3/00—Apparatus or devices for controlling flow of liquids under gravity from storage containers for dispensing purposes
    • B67D3/0009—Apparatus or devices for controlling flow of liquids under gravity from storage containers for dispensing purposes provided with cooling arrangements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
    • B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
    • B67D3/00—Apparatus or devices for controlling flow of liquids under gravity from storage containers for dispensing purposes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/54—Particle separators, e.g. dust precipitators, using ultra-fine filter sheets or diaphragms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/22—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by diffusion
    • B01D53/228—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by diffusion characterised by specific membranes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D63/00—Apparatus in general for separation processes using semi-permeable membranes
    • B01D63/08—Flat membrane modules
    • B01D63/087—Single membrane modules
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
    • B01D71/06—Organic material
    • B01D71/30—Polyalkenyl halides
    • B01D71/32—Polyalkenyl halides containing fluorine atoms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
    • B01D71/06—Organic material
    • B01D71/30—Polyalkenyl halides
    • B01D71/32—Polyalkenyl halides containing fluorine atoms
    • B01D71/36—Polytetrafluoroethene
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
    • B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
    • B67D3/00—Apparatus or devices for controlling flow of liquids under gravity from storage containers for dispensing purposes
    • B67D3/0029—Apparatus or devices for controlling flow of liquids under gravity from storage containers for dispensing purposes provided with holders for bottles or similar containers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
    • B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
    • B67D3/00—Apparatus or devices for controlling flow of liquids under gravity from storage containers for dispensing purposes
    • B67D3/0029—Apparatus or devices for controlling flow of liquids under gravity from storage containers for dispensing purposes provided with holders for bottles or similar containers
    • B67D3/0032—Apparatus or devices for controlling flow of liquids under gravity from storage containers for dispensing purposes provided with holders for bottles or similar containers the bottle or container being held upside down and provided with a closure, e.g. a cap, adapted to cooperate with a feed tube
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/50—Treatment of water, waste water, or sewage by addition or application of a germicide or by oligodynamic treatment
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/50—Treatment of water, waste water, or sewage by addition or application of a germicide or by oligodynamic treatment
    • C02F1/505—Treatment of water, waste water, or sewage by addition or application of a germicide or by oligodynamic treatment by oligodynamic treatment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2313/00—Details relating to membrane modules or apparatus
    • B01D2313/40—Adsorbents within the flow path
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
    • B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
    • B67D2210/00—Indexing scheme relating to aspects and details of apparatus or devices for dispensing beverages on draught or for controlling flow of liquids under gravity from storage containers for dispensing purposes
    • B67D2210/00002—Purifying means
    • B67D2210/00005—Filters
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/28—Treatment of water, waste water, or sewage by sorption
    • C02F1/288—Treatment of water, waste water, or sewage by sorption using composite sorbents, e.g. coated, impregnated, multi-layered
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/42—Treatment of water, waste water, or sewage by ion-exchange
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2307/00—Location of water treatment or water treatment device
    • C02F2307/10—Location of water treatment or water treatment device as part of a potable water dispenser, e.g. for use in homes or offices

Definitions

  • the present invention relates to a drinking water server that can collect water from a container containing drinking water that can be exchanged into a glass or the like, and that can prevent the invasion of bacteria and suppress the propagation of bacteria. is there.
  • a drinking water server has been used in the workplace or the like that can replace a container containing drinking water and collect a necessary amount of drinking water from the container into a cup or the like when necessary.
  • a hard type gallon bottle type
  • a hard type that does not deform is used as the drinking water container.
  • this type of drinking water server is provided with a container connecting portion 11 that removably connects the mouth portion of the drinking water-containing container B at the top, and below the container connecting portion 11.
  • a cold water tank 12 and a hot water tank 13 for storing drinking water dropped from the container B are provided, and a cold water faucet (four set) 14a for collecting the drinking water stored in the tanks 12 and 13, respectively.
  • a hot water side faucet (four set) 14b is provided (in FIG. 8, the hot water side faucet 14b is hidden behind the cold water side faucet 14a).
  • an outside air intake 15 that communicates with the inside of the container B containing drinking water via the container connection portion 11 is provided, and an air filter 16 is provided in a state of covering the outside air intake 15.
  • the container connecting portion 11 is formed in a double cylinder shape, the outer side is formed in a bottomed cylindrical fitting cylindrical body 11a into which the mouth of the container B is fitted, and the inner side is formed in the above-described manner. It is formed in the cylindrical body 11b for insertion which is inserted in the mouth part of the container B. A through-hole 11c for air circulation and a through-hole 11d for circulation of drinking water are formed in the peripheral wall of the inner cylindrical body 11b, and an opening 11e is formed on the bottom surface.
  • the hot water tank 13 is a watertight sealed tank, is disposed below the cold water tank 12, and the bottom of the cold water tank 12 communicates with the inside of the hot water tank 13 through a communication pipe 17.
  • the cold water tank 12 is a tank with an open ceiling, and a through hole is formed in the center of the cold water tank 12 in the height direction and integrated with the relay pipe 19.
  • a circular plate-shaped separator 18 is disposed in a state where a gap is formed between the peripheral wall of the cold water tank 12.
  • the through hole at the center of the separator 18 and the connecting pipe 17 are connected by a relay pipe 19.
  • a cooling pipe 12 a is wound around the outer surface of the peripheral side wall of the cold water tank 12, and a heater 13 a is wound around the outer surface of the peripheral wall of the hot water tank 13.
  • the drinking water server is used as follows. That is, first, the mouth part of the container B with the drinking water is connected to the container connection part 11 provided at the upper part of the drinking water server, and the container B with the drinking water is attached to the upper part of the drinking water server. Then, air enters the container B from the opening 11e on the bottom surface of the insertion cylindrical body 11b of the container connection part 11 through the air circulation through hole 11c, and the drinking water in the container B flows. The container connecting portion 11 drops from the drinking water circulation through hole 11d of the insertion tubular body 11b through the opening 11e on the bottom surface.
  • the dropped drinking water first enters the hot water tank 13 and the cold water tank 12 through the through hole of the separator 18 and the gap between the separator 18 and the peripheral side wall of the cold water tank 12. Thereby, drinking water is stored in the cold water tank 12, and the surface of the drinking water rises. And if the water surface passes the separator 18 and reaches the bottom face of the container connection part 11, the opening part 11e of the bottom face is closed, and the fall of the drinking water from the said container B is stopped. Next, in this state, drinking water is collected from the cold water side faucet 14a or the hot water side faucet 14b. Then, the surface of the drinking water on the separator 18 descends and the plugging by the surface is released.
  • the air entering the container B is taken only through the air filter 16 from the outside of the drinking water server.
  • the air filter 16 prevents dust and the like from entering the drinking water server from the outside.
  • a non-woven fabric, sponge, or the like that has a rough eye (increases the hole diameter) and improves air permeability is used. If a finer one is used, the air permeability is deteriorated and sufficient air (outside air) cannot be taken into the container B, so that the drinking water cannot be properly dropped from the container B, and the faucets 14a and 14b. This is because the water collection in the water deteriorates.
  • bacteria may not only enter through the air filter 16 but also enter from the faucets 14a and 14b when the hands or fingers touch the faucets 14a and 14b. If water is collected frequently, the drinking water will move in the drinking water server, so it is difficult for the bacteria that have invaded to breed. There is no movement in the drinking water, and bacteria are easy to propagate.
  • a drinking water server provided with a heating device see, for example, Patent Documents 1 and 2
  • a drinking water server provided with an ultraviolet lamp see, for example, Patent Document 3
  • an ozone generator a drinking water server (see, for example, Patent Document 4), a drinking water server (see, for example, Patent Document 5) that includes a plasma ion generator and another sterilization device, and the like have been proposed.
  • the drinking water server provided with the heating device has a problem that the piping system becomes extremely complicated and the drinking water server itself is not only expensive, but also increases the power consumption and the running cost. There is a problem that the drinking water server cannot be used while is operating.
  • the drinking water server provided with the ultraviolet lamp has a problem that ultraviolet rays are harmful to a human body and an eyeball, a problem that ultraviolet rays deteriorate resin parts and rubber parts in the drinking water server, and the like.
  • the drinking water server provided with the ozone generator has a problem that ozone gas concentration is restricted because ozone gas is not useful for the human body, a problem that there is an unpleasant odor peculiar to ozone, and the flavor of drinking water is impaired.
  • the drinking water server provided with the plasma ion generator and other sterilizers operates several sterilizers simultaneously, there exists a problem that energy consumption becomes large, and a problem that an apparatus becomes very complicated.
  • the present invention has been made in view of such circumstances, and has a simple structure that prevents invasion of bacteria accompanying intake of outside air and can suppress the propagation of bacteria in the drinking water server.
  • the purpose is to provide a water server.
  • a drinking water server includes a container connecting portion that removably connects a mouth portion of a container with drinking water, and a beverage that is provided below the container connecting portion and has dropped from the container.
  • a tank that stores water, a faucet that collects drinking water stored in the tank, an outside air intake port that communicates with the inside of the container containing drinking water via the container connection portion, and the outside air intake port.
  • a drinking water server provided with an air filter provided in a state where the air filter is an air filter of (A) below, and an antibacterial member of (B) below is installed in the tank. It takes the composition that it is.
  • the present inventors do not adopt a conventional means for sterilizing invading bacteria in the drinking water server, but bacteria accompanying intake of outside air.
  • the present inventors first conducted research on the air filter forming material and structure in order to prevent the invasion of bacteria accompanying the intake of outside air.
  • a fluororesin when used as a forming material, it was found that a porous film having excellent air permeability can be produced even if the pore diameter is reduced.
  • fluororesin is excellent in water resistance, it is suitable for the drinking water server which uses water.
  • the inventors conceived of fixing protective porous membranes on both sides of the fluororesin porous membrane. And based on this idea, further research was repeated.
  • the pore diameter of the fluororesin porous membrane is set within the range of 0.2 to 0.8 ⁇ m,
  • the pore size of the protective porous membrane is set to be equal to or larger than the pore size of the fluororesin porous membrane, it is possible to prevent the invasion of bacteria due to the intake of outside air while ensuring sufficient air permeability and maintaining water collection over a long period of time. I found out.
  • Food poisoning bacteria and the like are smaller than the pore diameter of 0.2 to 0.8 ⁇ m of the fluororesin porous membrane, but the action of static electricity and inertial collision and Brownian motion during the penetration of the fluororesin porous membrane such as food poisoning bacteria. From this effect, it can be assumed that it does not permeate the fluororesin porous membrane.
  • the present inventors conceived of installing an antibacterial member in the tank of the drinking water server in order to suppress the growth of bacteria in the drinking water server, and the formation material and structure of the antibacterial member Repeated research.
  • the antibacterial member is composed of a plurality of granular antibacterial agents and a water-permeable porous bag in which these granular antibacterial agents are sealed.
  • the granular antibacterial agent is ion-bonded with low density polyethylene and zeolite with silver ions. It was found that the granular antibacterial agent released the silver ions into water, and the growth of bacteria in the drinking water server could be suppressed by the action of the silver ions. Moreover, it was also found that the granular antibacterial agent does not adversely affect the human body.
  • the present inventors adopt the specific air filter as the air filter of the drinking water server, and install the specific antibacterial member in the tank of the drinking water server, thereby allowing the outside air to have a simple structure.
  • the present inventors have found that it is possible to prevent the invasion of bacteria accompanying the incorporation and to suppress the propagation of bacteria in the drinking water server, and have reached the present invention.
  • the drinking water server of the present invention is adapted to take in outside air through the air filter of (A) above, it is possible to prevent bacteria from entering due to taking in outside air. Furthermore, since the antibacterial member of (B) is installed in the tank, even if bacteria enter from the faucet, their propagation can be suppressed. And the hygiene management by the air filter of said (A) and the antibacterial member of said (B) can be implement
  • the thickness of the fluororesin porous membrane is set in the range of 1 to 15 ⁇ m, and the thickness of the protective porous membrane is set in the range of 120 to 170 ⁇ m.
  • the balance between the ventilation performance and the bacteria invasion prevention performance of the air filter can be further optimized.
  • the ratio of the low density polyethylene and the ion exchanger (low density polyethylene / ion exchanger) constituting the granular antibacterial agent is (70% by weight / 30% by weight) to (95%).
  • Wt% / 5 wt%), the average diameter of the granular antibacterial agent is set in the range of 3-10 mm, the pore diameter of the water-permeable porous bag is set in the range of 50-100 ⁇ m,
  • the volume ratio occupied by the granular antibacterial agent in the water-permeable porous bag is set within a range of 30 to 70%, the bacterial growth suppression performance of the antibacterial member can be further improved.
  • FIG. 1 is a cross-sectional view schematically showing an embodiment of the drinking water server of the present invention.
  • this drinking water server is similar to a conventional drinking water server (see FIG. 8), and includes a container connection part 11, a cold water tank 12, a hot water tank 13, a cold water side faucet 14a, a hot water side faucet 14b, and outside air.
  • An intake port 15 and an air filter 1 are provided. Similar parts are denoted by the same reference numerals, and description thereof is omitted.
  • the air filter 1 as shown in an enlarged view in FIG. 2, the fluororesin porous membrane 1a and the protection fixed to both surfaces of the fluororesin porous membrane 1a are provided.
  • the pore diameter of the fluororesin porous membrane 1a is set in the range of 0.2 to 0.8 ⁇ m
  • the pore diameter of the protective porous membrane 1b is the fluororesin porous membrane 1a.
  • the antibacterial member 2 that has not been used in the conventional general drinking water server (see FIG. 8) is installed on the separator 18 in the cold water tank 12. Yes.
  • the antibacterial member 2 is composed of a plurality of granular antibacterial agents 2a and a water-permeable porous bag 2b in which the granular antibacterial agents 2a are sealed.
  • the granular antibacterial agent 2a is composed of low density polyethylene and an ion exchanger in which silver ions are ion-bonded to zeolite. It is another feature of the present invention that the antibacterial member 2 is installed in a tank (in this embodiment, the cold water tank 12).
  • the drinking water server of the present invention employs the specific air filter 1 as the air filter 1, and is characterized by installing the specific antibacterial member 2 in the tank of the drinking water server. It is.
  • polytetrafluoroethylene is preferable as the forming material (fluororesin) of the fluororesin porous membrane 1a constituting the air filter 1 (see FIG. 2).
  • the fluororesin porous membrane 1a is produced, for example, by biaxially stretching a fluororesin semi-fired body 50 times or more and heat-treating it at a temperature not lower than the melting point of the fluororesin. Thereby, a fluororesin porous membrane 1a having a pore diameter in the range of 0.2 to 0.8 ⁇ m is produced.
  • the pore diameter (within a range of 0.2 to 0.8 ⁇ m) of the fluororesin porous membrane 1a can be confirmed, for example, by a bubble point method.
  • This bubble point method is performed as follows. That is, first, the fluororesin porous membrane 1a is impregnated with a fluorine-based test solution under atmospheric pressure. Next, the fluororesin porous membrane 1a is attached to an adapter, and the adapter is attached to the sample chamber of the porous material multi-physical property evaluation apparatus. Thereafter, the detection of the maximum pore diameter and the wetting flow rate curve (WET curve) are measured until the maximum pressure or the maximum flow rate is reached by the porous material multi-physical property evaluation apparatus.
  • WET curve wetting flow rate curve
  • the measurement of the dry curve is measured until the maximum pressure or the maximum flow rate is reached by the porous material multi-physical property evaluation apparatus. And by the said measurement, the distribution of the hole diameter of the said fluororesin porous membrane 1a is obtained, and the range of the said hole diameter can be confirmed from this distribution.
  • the protective porous membrane 1b fixed on both surfaces of the fluororesin porous membrane 1a is preferably a nonwoven fabric or a woven fabric made of resin.
  • the resin is the same as the resin material of the external air intake cylindrical body 3 from the viewpoint of simplifying the mounting structure by enabling heat welding to the external air intake cylindrical body 3 to which the air filter 1 is attached. Is preferred.
  • An example of such a resin is polyethylene.
  • the protective porous membrane 1b As a method for fixing the protective porous membrane 1b on both sides of the fluororesin porous membrane 1a, for example, the protective porous membrane 1b is superposed on both sides of the fluororesin porous membrane 1a and thermocompression bonded. Is called.
  • the air filter 1 manufactured in this manner has a performance capable of preventing invasion of bacteria while sufficiently ensuring air permeability. Further, as described above, since the pore diameter of the protective porous membrane 1b is set to be larger than the pore diameter of the fluororesin porous membrane 1a, the performance depends on the fluororesin porous membrane 1a. Performance.
  • the thickness of the fluororesin porous membrane 1a is preferably set in the range of 1 to 15 ⁇ m, more preferably about 2 to 9 ⁇ m.
  • the thickness of the protective porous membrane 1b is preferably set in the range of 120 to 170 ⁇ m, more preferably about 145 ⁇ m.
  • the thickness (within a range of 1 to 15 ⁇ m) of the fluororesin porous membrane 1a can be confirmed by, for example, a field emission scanning electron microscope. That is, first, since the fluororesin porous membrane 1a is very thin and flexible, the fluororesin porous membrane 1a is resin-embedded and hardened. Next, the cross section of the fluororesin porous film 1a is formed by a cross section polisher (CP).
  • This cross section polisher is an apparatus for forming a cross section by irradiation with an ion beam, and is used when a sample is deformed when the cross section is formed by mechanical polishing. And the range of the said thickness can be confirmed by observing the cross section with the said field emission type scanning electron microscope. In order to reduce charging during observation, platinum may be coated on the cross section of the fluororesin porous membrane 1a.
  • the air filter 1 has a performance of JIS Z 8122 that has a particle collection rate of 99.9995% or more with respect to particles having a rated air volume of 0.15 ⁇ m and an initial pressure loss of 245 Pa or less. It has the same performance as an ULPA (Ultra Low Low Penetration Air) filter, which is defined as “Air Filter”. The said pressure loss shows that it is excellent in air permeability, so that a value is small.
  • ULPA Ultra Low Low Penetration Air
  • the outside air intake tubular body 3 (see FIG. 3) to which the air filter 1 is thermally welded is composed of an upper large-diameter portion 3a and a lower small-diameter portion 3b.
  • the boundary part between 3a and the small diameter part 3b is formed in the step part.
  • the peripheral portion of the circular air filter 1 is thermally welded to the step portion (the bottom portion of the large diameter portion).
  • four convex portions 3c are evenly arranged on the upper end opening edge of the large diameter portion 3a.
  • the upper end surface supports the lid 4 on the peripheral edge of the ceiling surface.
  • the clearance gap between the adjacent convex parts 3c becomes a flow path (refer the arrow shown in FIG.
  • reference numeral 3 d is an O-ring attached to the outer peripheral surface of the outside air intake cylindrical body 3, whereby the outside air intake cylinder 3 is attached to the outside air intake port 15. Then, the space between the outer peripheral surface of the outside air intake cylindrical body 3 and the inner peripheral surface of the external air intake port 15 is made airtight. Also, the outside air intake cylindrical body 3 is detachably attached to the outside air intake 15.
  • the lid 4 is formed in a cylindrical shape.
  • the top surface is formed into a curved surface that gradually decreases from the central portion toward the peripheral portion, and the curved surface prevents dust, water droplets, and the like from accumulating on the top surface.
  • the lid 4 is attached to the upper part of the outside air intake cylindrical body 3 so as to cover the air filter 1, thereby preventing dust, water droplets, and the like from coming into contact with the air filter 1.
  • the production of the granular antibacterial agent 2a constituting the antibacterial member 2 is, for example, about 100 ⁇ m in which an ion exchanger in which silver ions are ion-bonded to the zeolite is supported on the low density polyethylene.
  • the powder is heat-molded at about 100 ° C., and the low-density polyethylene resin is not completely dissolved, leaving a void.
  • the ratio of the low density polyethylene to the ion exchanger is (70 wt% / 30 wt%) to (95 wt% / 5 wt).
  • the average diameter of the granular antibacterial agent 2a is preferably set in the range of 3 to 10 mm, more preferably about 6 mm.
  • the mass of the granular antibacterial agent 2a having an average diameter of 6 mm is about 53.3 mg / piece.
  • lifted for example.
  • the silver content in the granular antibacterial agent 2a is in the range of 0.1 to 0.5% by weight, preferably 0.2 to 0.3% by weight.
  • the said average diameter measures the diameter of arbitrary 1 places with calipers about arbitrary 10 granular antibacterial agents 2a, and takes those average values.
  • the silver content (within a range of 0.1 to 0.5% by weight) in the granular antibacterial agent 2a can be confirmed by, for example, ICP emission analysis. That is, first, sulfuric acid is added to the granular antibacterial agent 2a to ash the granular antibacterial agent 2a. Next, the ashed product is treated with hydrofluoric acid and then melted with potassium hydrogen sulfate. Next, dissolve in dilute nitric acid and make a constant volume with pure water. And it can be applied to an ICP emission analyzer to confirm the silver content.
  • the water-permeable porous bag 2b which comprises the said antibacterial member 2 is the nonwoven fabric or woven fabric which consists of resin.
  • the resin is preferably a composite material of, for example, polyethylene terephthalate and polyethylene from the viewpoint of strength and the like.
  • the mass of the nonwoven fabric or the like is preferably set in the range of 17.0 to 27.0 g / m 2 , more preferably 22.4 g / m 2 .
  • the thickness of the nonwoven fabric or the like is preferably set in the range of 0.05 to 0.15 mm, more preferably 0.10 mm.
  • the pore diameter of the nonwoven fabric is preferably set in the range of 50 to 100 ⁇ m.
  • sealing of the granular antibacterial agent 2a to the said water-permeable porous bag 2b is performed by wrapping the granular antibacterial agent 2a with the said nonwoven fabric etc., and heat-sealing the peripheral parts, such as the nonwoven fabric, and making it into a bag shape, for example. .
  • the water-permeable porous bag From the viewpoint of making the contact between the granular antibacterial agent 2a and drinking water more appropriate and further suppressing the growth of bacteria, and making the passage of drinking water through the antibacterial member 2 more appropriate, the water-permeable porous bag.
  • the volume ratio occupied by the granular antibacterial agent 2a in 2b is preferably set in the range of 30 to 70%.
  • the antibacterial member 2 is installed on the separator 18 in the cold water tank 12, but it may be installed below the separator 18.
  • the two tanks, the cold water tank 12 and the hot water tank 13, are provided, but only one of the tanks may be provided. In that case, since the separator 18 is not necessary, the installation position of the antibacterial member 2 may be any position in the tank.
  • the drinking water server shown in FIG. 1 was prepared.
  • the air filter has a diameter from a sheet material (Daikin Co., Ltd., Neurofine (registered trademark), total thickness 300 ⁇ m) formed by heat-pressing a polyethylene porous film (thickness 145 ⁇ m) on both sides of a PTFE porous membrane (thickness 10 ⁇ m). What was punched into a 22.8 mm circle was used.
  • the pore diameter of the PTFE porous membrane of the air filter was confirmed to be within the range of 0.2 to 0.8 ⁇ m as a result of confirmation by the bubble point method.
  • the air filter satisfies the ULPA filter particle collection rate of 99.9995% or more and the initial pressure loss of 245 Pa or less specified in JIS Z 8122. Then, the peripheral portion of the circular air filter is subjected to an outside air intake cylinder by ultrasonic waves (oscillator output 1200 W, oscillation frequency 15.15 ⁇ 0.15 kHz, welding time 0.2 seconds, holding time 0.4 seconds). It heat-sealed so that the hollow part (flow path of external air) of a shape body might be covered.
  • the channel diameter of the outside air intake cylindrical body was 14 mm.
  • the particulate antibacterial agent constituting the antibacterial member comprises 90% by weight of low density polyethylene and 10% by weight of an ion exchanger in which silver ions are ion-bonded to zeolite, and has an average diameter of 6 mm (53.3 mg / piece).
  • a heat-molded product (PB6LJ10-1 manufactured by Sinanen Zeomic Co., Ltd .: silver content 0.23% by weight) was used.
  • 30 g of the granular antibacterial agent is weighed, and a non-woven fabric (22.4 g / m 2 , pore diameter 50 to 100 ⁇ m) made of a composite material of polyethylene terephthalate and polyethylene is formed into a bag shape (170 mm ⁇ 90 mm).
  • the water-permeable porous bag was sealed and sealed by heat sealing.
  • the volume ratio occupied by the granular antibacterial agent inside the water-permeable porous bag was 50%.
  • the bubble point method was performed as follows. That is, first, the above-mentioned fluororesin porous membrane was impregnated with Galwick (fluorine type test solution, surface tension 0.0157 N / m) under atmospheric pressure. Then, it was measured with a porous material multi-physical property evaluation apparatus (manufactured by PMI, USA, palm porometer: CFP-1200AEXLCBBJ). As a result, the “cumulative filter flow vs. pore diameter” graph shown in FIG. 5 and the “pore diameter distribution vs. average pore diameter” graph shown in FIG. 6 were obtained.
  • the silver content (0.23% by weight) in the granular antibacterial agent was confirmed by an ICP emission analysis method using an ICP emission analyzer (ICPS-8100, manufactured by Shimadzu Corporation).
  • the fine air filter can prevent the invasion of general viable bacteria to some extent, but since there is no antibacterial member, the invading general viable bacteria grow and the number of colonies cannot be controlled. I understand that. And in the drinking water server of the comparative example 3, general viable bacteria were confirmed from the 2nd day, and it increased only a little after that, increased rapidly after the 3rd day, and reached the upper limit 2500 pieces on the 12th day. In this test, since the upper limit is set to 2500, in the graph of FIG. 7, it is 2500 after the 12th day, but there is a possibility that the 12th day is also proliferating.
  • the air filter has a rough mesh, so that viable bacteria can easily invade, and since there is no antibacterial member, the invading common viable bacteria can easily grow. From the above, it can be seen that the combined use of the specific air filter and the specific antibacterial member as in the drinking water server of the example is useful for suppressing the number of colonies of general viable bacteria.
  • the thickness of the PTFE porous membrane and the polyethylene porous membrane of the air filter were changed, and the number of colonies of general viable bacteria was analyzed in the same manner as described above. As a result, the PTFE porous membrane was analyzed.
  • the thickness of the membrane was set in the range of 1 to 15 ⁇ m and the thickness of the polyethylene porous membrane was set in the range of 120 to 170 ⁇ m, similar results to the above examples were obtained.
  • the thickness of the fluororesin porous membrane was confirmed as follows. That is, first, the main agent [Oken Trading Co., epoch 812 (EM grade)], the curing agent [Oken Shoji, MNA (methyl nadic anhydride)], the polymerization accelerator [Oken Trading Co., Ltd. M.M. P. Using an epoxy resin made of -30 (Tri-dimethylaminophenyl), the fluororesin porous membrane was embedded and solidified. Next, a cross section of the fluororesin porous membrane was formed by a cross section polisher (manufactured by JEOL Ltd., SM-09010).
  • a cross section polisher manufactured by JEOL Ltd., SM-09010
  • the processing ions argon was used as the processing ions, the ion acceleration voltage was 5 kV, the processing speed was 1.3 ⁇ m / min (acceleration voltage 6 kV, converted to SiO 2 ), and the cross-sectional positioning accuracy was 15 ⁇ m (positioning with an optical microscope). Thereafter, a platinum coating for reducing charge was applied to the cross section. The cross section was observed at a magnification of 3500 using a field emission scanning electron microscope (S-4800, manufactured by Hitachi High-Technologies Corporation). As a result, the thickness of the cross section was non-uniform, but it was formed within the range of 1 to 15 ⁇ m.
  • S-4800 field emission scanning electron microscope
  • the numerical ratio of the particulate antibacterial agent component ratio of the antibacterial member, the average diameter of the granular antibacterial agent, the pore diameter of the water-permeable porous bag, and the volume ratio occupied by the granular antibacterial agent inside the water-permeable porous bag are changed as described above.
  • the volume ratio was set within the range of 30 to 70%, a preferable result was obtained as in the above example.
  • the drinking water server of the present invention uses a specific air filter and a specific antibacterial member in combination to prevent the invasion of bacteria due to the intake of outside air and to suppress the growth of bacteria in the drinking water server. Management is realized with a simple structure.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mechanical Engineering (AREA)
  • Organic Chemistry (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Devices For Dispensing Beverages (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)
  • Filtering Materials (AREA)

Abstract

La présente invention se rapporte à une fontaine à eau potable grâce à laquelle, à l'aide d'une simple structure, l'invasion bactérienne résultant de l'introduction d'air extérieur peut être évitée et la prolifération bactérienne dans la fontaine à eau potable peut être empêchée. La fontaine à eau potable est équipée d'un filtre à air (1) pour l'entrée d'air extérieur, qui comprend un film poreux d'un diamètre de pore de 0,2-0,8 µm constitué de résine fluorée, et des films poreux protecteurs fixés aux deux faces dudit film poreux. De plus, dans la fontaine à eau, un élément antibactérien (2) est placé dans un réservoir, ledit élément comprenant de multiples particules antibactériennes constituées de polyéthylène à basse densité et d'un échangeur d'ions dans lequel les ions d'argent sont en liaison ionique avec la zéolite, lesdites multiples particules antibactériennes étant scellées dans un sac poreux perméable à l'eau.
PCT/JP2011/060288 2010-05-10 2011-04-27 Fontaine à eau potable WO2011142266A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201180011912.3A CN102781814B (zh) 2010-05-10 2011-04-27 饮水机
KR1020127022831A KR101757500B1 (ko) 2010-05-10 2011-04-27 음료수 공급기

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2010-108411 2010-05-10
JP2010108411 2010-05-10
JP2011-087248 2011-04-11
JP2011087248A JP5904717B2 (ja) 2010-05-10 2011-04-11 飲料水サーバ

Publications (1)

Publication Number Publication Date
WO2011142266A1 true WO2011142266A1 (fr) 2011-11-17

Family

ID=44914322

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2011/060288 WO2011142266A1 (fr) 2010-05-10 2011-04-27 Fontaine à eau potable

Country Status (5)

Country Link
JP (1) JP5904717B2 (fr)
KR (1) KR101757500B1 (fr)
CN (1) CN102781814B (fr)
TW (1) TWI527618B (fr)
WO (1) WO2011142266A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013032514A (ja) * 2011-07-05 2013-02-14 Nitto Denko Corp ポリテトラフルオロエチレン多孔質膜およびエアフィルタ濾材
CN103569931A (zh) * 2012-07-27 2014-02-12 李宁 智能取油机
JP2014076834A (ja) * 2012-10-11 2014-05-01 Air Water Inc 飲料水ディスペンサの水報知機構
EP2902367A1 (fr) * 2012-09-25 2015-08-05 Mitsubishi Rayon Co., Ltd. Cartouche de purification de l'eau et purificateur d'eau

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101470732B1 (ko) * 2013-05-09 2014-12-08 신태호 냉장고 및 냉온수기 겸용 생수공급시스템
US10640403B2 (en) 2013-08-15 2020-05-05 Applied Silver, Inc. Antimicrobial batch dilution system
US11618696B2 (en) 2013-08-15 2023-04-04 Applied Silver, Inc. Antimicrobial batch dilution system
US9689106B2 (en) 2013-12-06 2017-06-27 Applied Silver, Inc. Antimicrobial fabric application system
CN103750747A (zh) * 2014-01-13 2014-04-30 株式会社Nac 通过精密过滤器除去浮游物质的装置
KR101640028B1 (ko) * 2014-05-14 2016-07-18 주식회사 진텍 냉온수기의 에어필터
JP6430731B2 (ja) * 2014-07-02 2018-11-28 ビクトリージャパン株式会社 飲料水供給装置
US20170050870A1 (en) 2015-08-21 2017-02-23 Applied Silver, Inc. Systems And Processes For Treating Textiles With An Antimicrobial Agent
WO2018160708A1 (fr) 2017-03-01 2018-09-07 Applied Silver, Inc. Systèmes et procédés pour traiter des textiles avec un agent antimicrobien
JPWO2020235656A1 (fr) * 2019-05-21 2020-11-26
KR20210150571A (ko) * 2019-05-21 2021-12-10 산토리 홀딩스 가부시키가이샤 음료 서버

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH067895U (ja) * 1992-06-29 1994-02-01 株式会社加藤機械製作所 殺菌フロート
JPH07187295A (ja) * 1993-12-22 1995-07-25 Yokohama Rubber Co Ltd:The 飲料水ディスペンサー
JPH08164393A (ja) * 1994-12-09 1996-06-25 Kanebo Ltd 抗水中微生物用樹脂組成物
JP2003205211A (ja) * 2001-11-09 2003-07-22 Nitto Denko Corp 抗菌性エアフィルタろ材およびこれを用いたフィルタユニット
JP2008174576A (ja) * 2007-01-16 2008-07-31 Kenji Nakamura 抗菌樹脂成型物及びその製造方法
JP2009083871A (ja) * 2007-09-28 2009-04-23 Noritz Corp 飲料水サーバ
JP2009196650A (ja) * 2008-02-19 2009-09-03 Takagi Ind Co Ltd 冷温水供給装置

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006008219A (ja) * 2004-06-28 2006-01-12 Sanden Corp 飲料ディスペンサ
JP4137114B2 (ja) 2005-10-31 2008-08-20 サントリー株式会社 ミネラルウォーターのディスペンサの加熱殺菌装置
JP4253036B1 (ja) * 2008-08-27 2009-04-08 株式会社コスモライフ 飲料ディスペンサ

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH067895U (ja) * 1992-06-29 1994-02-01 株式会社加藤機械製作所 殺菌フロート
JPH07187295A (ja) * 1993-12-22 1995-07-25 Yokohama Rubber Co Ltd:The 飲料水ディスペンサー
JPH08164393A (ja) * 1994-12-09 1996-06-25 Kanebo Ltd 抗水中微生物用樹脂組成物
JP2003205211A (ja) * 2001-11-09 2003-07-22 Nitto Denko Corp 抗菌性エアフィルタろ材およびこれを用いたフィルタユニット
JP2008174576A (ja) * 2007-01-16 2008-07-31 Kenji Nakamura 抗菌樹脂成型物及びその製造方法
JP2009083871A (ja) * 2007-09-28 2009-04-23 Noritz Corp 飲料水サーバ
JP2009196650A (ja) * 2008-02-19 2009-09-03 Takagi Ind Co Ltd 冷温水供給装置

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013032514A (ja) * 2011-07-05 2013-02-14 Nitto Denko Corp ポリテトラフルオロエチレン多孔質膜およびエアフィルタ濾材
CN103569931A (zh) * 2012-07-27 2014-02-12 李宁 智能取油机
EP2902367A1 (fr) * 2012-09-25 2015-08-05 Mitsubishi Rayon Co., Ltd. Cartouche de purification de l'eau et purificateur d'eau
EP2902367A4 (fr) * 2012-09-25 2015-10-28 Mitsubishi Rayon Co Cartouche de purification de l'eau et purificateur d'eau
JP2014076834A (ja) * 2012-10-11 2014-05-01 Air Water Inc 飲料水ディスペンサの水報知機構

Also Published As

Publication number Publication date
CN102781814A (zh) 2012-11-14
KR20130059315A (ko) 2013-06-05
TWI527618B (zh) 2016-04-01
TW201143870A (en) 2011-12-16
KR101757500B1 (ko) 2017-07-12
CN102781814B (zh) 2016-01-06
JP5904717B2 (ja) 2016-04-20
JP2011255960A (ja) 2011-12-22

Similar Documents

Publication Publication Date Title
JP5904717B2 (ja) 飲料水サーバ
JPWO2012128022A1 (ja) 二酸化塩素発生装置
JP2008022765A (ja) 環境評価装置及び環境評価方法
WO2006104043A1 (fr) Methode de traitement de surface et article a surface traitee
US20220040615A1 (en) Face mask
JP3676694B2 (ja) 滅菌用振動撹拌装置、それを含む滅菌装置および滅菌方法
WO2008010394A1 (fr) Système d'évaluation environnementale et procédé d'évaluation environnementale
CN111643282B (zh) 负压消毒防护救护车
Chen et al. Speaking-induced charge-laden face masks with durable protectiveness and wearing breathability
JP2021040710A (ja) 圧縮空気圧回路用除菌エアフィルタ
JP2008106398A (ja) 除菌シート
WO2017188398A1 (fr) Filtre de piégeage des virus pour sac ou contenant jetable pour aspirateur médical
JP2010167088A (ja) 殺菌・ウイルス不活性装置
Yoon et al. A capture and inactivation system against pathogens in indoor air using copper nanoparticle decorated melamine sponge hybrid air filters
JP2011200818A (ja) 浄化用濾過器および浄化方法
JP2008022764A (ja) 環境評価方法
RU104460U1 (ru) Очиститель воздуха с фотокаталитическим фильтром
CN107676885A (zh) 一种水洗式空气净化器
Wang et al. Development of electrospun nanofibrous filters for controlling coronavirus aerosols
JP2017169878A (ja) 有機質の分解方法及び有機質の分解装置
CN219030319U (zh) 一种袋体及缓释功能袋
TWI276608B (en) Vibration agitating device for sterilization, sterilization apparatus having such vibration agitating device, and sterilization method
US11751563B2 (en) Pathogen eliminating article and methods of manufacturing and using the same
Liu et al. Revolutionizing Airborne Virus Defense: Electromagnetic MXene-Coated Air Filtration for Superior Aerosol Viral Removal
CN212618866U (zh) 便携式空气消毒过滤装置及系统

Legal Events

Date Code Title Description
WWE Wipo information: entry into national phase

Ref document number: 201180011912.3

Country of ref document: CN

121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 11780523

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase

Ref document number: 20127022831

Country of ref document: KR

Kind code of ref document: A

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 11780523

Country of ref document: EP

Kind code of ref document: A1