WO2014155875A1 - ウォーターサーバー - Google Patents
ウォーターサーバー Download PDFInfo
- Publication number
- WO2014155875A1 WO2014155875A1 PCT/JP2013/084231 JP2013084231W WO2014155875A1 WO 2014155875 A1 WO2014155875 A1 WO 2014155875A1 JP 2013084231 W JP2013084231 W JP 2013084231W WO 2014155875 A1 WO2014155875 A1 WO 2014155875A1
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- WIPO (PCT)
- Prior art keywords
- water
- valve
- wall surface
- flow path
- outlet
- Prior art date
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 275
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Images
Classifications
-
- 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
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
- C02F1/32—Treatment of water, waste water, or sewage by irradiation with ultraviolet light
- C02F1/325—Irradiation devices or lamp constructions
-
- 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
- B67D1/00—Apparatus or devices for dispensing beverages on draught
- B67D1/0003—Apparatus or devices for dispensing beverages on draught the beverage being a single liquid
- B67D1/0004—Apparatus or devices for dispensing beverages on draught the beverage being a single liquid the beverage being stored in a container, e.g. bottle, cartridge, bag-in-box, bowl
-
- 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
- B67D1/00—Apparatus or devices for dispensing beverages on draught
- B67D1/0042—Details of specific parts of the dispensers
- B67D1/0081—Dispensing valves
-
- 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
- B67D1/00—Apparatus or devices for dispensing beverages on draught
- B67D1/07—Cleaning beverage-dispensing apparatus
-
- 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
- B67D1/00—Apparatus or devices for dispensing beverages on draught
- B67D1/08—Details
- B67D1/0801—Details of beverage containers, e.g. casks, kegs
- B67D1/0804—Shape or materials
-
- 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
- B67D1/00—Apparatus or devices for dispensing beverages on draught
- B67D1/08—Details
- B67D1/0801—Details of beverage containers, e.g. casks, kegs
- B67D1/0807—Openings for emptying, e.g. taped openings
-
- 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
- B67D1/00—Apparatus or devices for dispensing beverages on draught
- B67D1/08—Details
- B67D1/0857—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
- B67D1/00—Apparatus or devices for dispensing beverages on draught
- B67D1/08—Details
- B67D1/0857—Cooling arrangements
- B67D1/0858—Cooling arrangements using compression systems
- B67D1/0861—Cooling arrangements using compression systems the evaporator acting through an intermediate heat transfer means
-
- 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
- B67D1/00—Apparatus or devices for dispensing beverages on draught
- B67D1/08—Details
- B67D1/0895—Heating 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
- B67D1/00—Apparatus or devices for dispensing beverages on draught
- B67D1/08—Details
- B67D1/12—Flow or pressure control devices or systems, e.g. valves, gas pressure control, level control in storage 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
-
- 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
- B67D2210/00013—Sterilising means
- B67D2210/00015—UV radiation
-
- 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
- B67D2210/00028—Constructional details
- B67D2210/00094—Ergonomics
- B67D2210/00097—Handling of storage 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
- 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
- B67D2210/00146—Component storage means
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/32—Details relating to UV-irradiation devices
Definitions
- This invention relates to a water server for supplying drinking water from a replaceable raw water container filled with drinking water such as mineral water.
- a replaceable raw water container is set in a casing, and drinking water filled in the raw water container is replenished to a temperature adjustment tank housed in the casing by gravity water supply or pump pumping. It has become.
- a temperature adjustment tank At least one of a cold water tank that cools and stores drinking water and a hot water tank that heats and stores drinking water is provided.
- a water injection valve is connected to the temperature adjustment tank. When the user opens the water injection valve, drinking water in the temperature adjustment tank flows out from the outlet of the water injection valve (for example, Patent Document 1 below).
- the inlet side with the valve seat as the boundary is filled with cold or hot drinking water cooled or heated in the temperature adjustment tank when the valve is opened. Since the low-temperature or high-temperature drinking water has antibacterial properties depending on the temperature, there is usually no concern about hygiene due to bacterial growth on the inner wall surface of the flow channel or the valve body surface portion located on the inlet side. If the valve-closed state continues for a long time, the drinking water staying in the flow path of the water injection valve becomes normal temperature and the bactericidal property due to temperature is lost, but it is contaminated as long as the strain does not enter the flow path on the inlet side. There is nothing.
- the inner wall surface of the flow channel and the valve body surface located on the outlet side with the valve seat as the boundary are exposed to the outside air while the valve is closed, and water droplets are often attached. It is easy to pick up bacteria, and bacterial propagation is easy to proceed.
- the temperature adjustment tank is a cold water tank
- the bacteria that have landed will gradually extend the mycelium to the inlet side of the water injection valve, and further propagate in the outlet pipe from the tank to the water injection valve. In the end, it may reach a relatively high temperature (close to room temperature) inside the cold water tank.
- the hot water path including the outlet pipe and the water injection valve is sterilized with hot water, so that problems such as the cold water path are unlikely to occur even if airborne bacteria adhere.
- a problem to be solved by the present invention is to prevent bacterial growth at the water injection valve of the water server.
- the present invention includes a temperature adjustment tank housed in a housing and a water injection valve connected to the temperature adjustment tank, and the drinking water in the temperature adjustment tank is supplied to the water injection valve.
- the flow path from the inlet of the water injection valve to the outlet includes a body part formed of an ultraviolet light transmissive material, and an ultraviolet light emission source that irradiates the body part with ultraviolet light. Adopted the configuration.
- the ultraviolet light emitted from the ultraviolet light emission source spreads in the ultraviolet transmissive body portion, and thus falls in a wide range on the inner wall surface of the flow path and the valve body surface. Since the inner wall surface of the flow path and the surface of the valve body are sterilized by the ultraviolet rays, it is possible to prevent bacterial growth on the water injection valve.
- the outer wall surface portion along the flow path of the body portion may be covered with an ultraviolet reflective layer so as not to be exposed to the outside. Since the ultraviolet rays that have reached the outer wall surface along the flow path are reflected by the ultraviolet light reflection layer and are easily directed to the inner wall surface of the flow path and the surface of the valve body, sterilization can be further improved.
- the water injection valve may be an angle valve having the outlet facing downward. Even if ultraviolet rays leak from the exit to the outside, it becomes difficult for the user to hit.
- the ultraviolet light emission source can be disposed below the inlet side pipe line between the inlet and the valve seat.
- the ultraviolet light emission source is arranged in this way, ultraviolet rays can be irradiated to the inner wall surface of the inlet side pipe line, and the inner wall surface of the outlet side pipe line extending between the valve seat and the outlet can also be input to the inner wall surface. Irradiation can be performed without detouring the side conduit. Therefore, it is easy to efficiently apply ultraviolet rays to the inner wall surface of the entire flow path.
- the inner wall surface of the outlet side pipe line between the valve seat and the outlet may be made of an ultraviolet transmitting material containing a photocatalyst.
- the bactericidal property on the inner wall surface of the outlet side pipe line exposed to the outside air can be enhanced by the photocatalyst, and the remaining water droplets can be prevented by the water repellent action by the photocatalyst.
- the water server according to the present invention adopts the above-described configuration, the inner wall surface of the flow path and the surface of the valve body are sterilized by the ultraviolet rays, so that it is possible to prevent bacterial growth on the water injection valve.
- the longitudinal cross-sectional view which shows embodiment of the water server which concerns on this invention Longitudinal sectional view showing the flow of drinking water when pouring cold water Longitudinal sectional view showing the flow of drinking water when pouring hot water Longitudinal sectional view showing the flow of drinking water during sterilization with hot water
- A) is sectional drawing which shows the valve closing state of the water injection valve of the water server which concerns on this invention
- (b) is a perspective view which shows the external appearance of the water injection valve of the water server which concerns on this invention from front diagonally downward
- FIG. 1 shows an embodiment of a water server according to the present invention.
- the water server includes a housing 1, a temperature adjustment tank 2 (hereinafter referred to as “cold water tank 2”) that is stored in the housing 1 and stores cooled drinking water, and heated drinking water.
- a temperature adjustment tank 3 (hereinafter referred to as “hot water tank 3”) to be stored, a buffer tank 4 which is disposed on the side of the cold water tank 2 and accommodates air and drinking water in two upper and lower layers, and the cold water tank 2
- a bottle basket 6 that is disposed below and stores the replaceable raw water container 5 in a horizontal state, a mounting table 7 on which the bottle basket 6 is mounted, a water injection valve 8 for cold water, A water injection valve 9 and an air sterilization chamber 10 are provided.
- the cold water tank 2 includes a buffer tank 4 via a vent pipe 11 and a buffer tank water supply pipe 12, an air sterilization chamber 10 via an air introduction path 13, a raw water container 5 via a raw water pumping pipe 14, and a cold water tank.
- the water injection valves 8 connected to the two outlet pipes 15 communicate with each other.
- the raw water pumping pipe 14 is provided with a first three-way valve 16 and a second three-way valve 17. As shown in FIGS. 2 and 3 to be described later, each of the three-way valves 16 and 17 blocks the flow path to the first sterilization pipe 18 and the second sterilization pipe 19, and drinks in the raw water container 5.
- Water is transferred from the raw water pumping pipe 14 to the cold water tank 2, and a normal flow path that allows the cold water and hot water to be poured out, as shown in FIG. 4 to be described later, from the raw water container 5 to the raw water pumping pipe 14.
- the flow path and the flow path from the raw water pumping pipe 14 to the cold water tank 2 are blocked, and the raw water pumping pipe 14-the first sterilization pipe 18-the buffer tank 4-the hot water tank water supply pipe 20-the hot water tank 3
- the second sterilization pipe 19 and the raw water pumping pipe 14 are configured so as to be switched to a sterilization flow path composed of a closed loop.
- each of the three-way valves 16 and 17 is an electromagnetic valve, and can be turned into a sterilization flow path when energized, and can be turned into a normal flow path by releasing the power.
- FIG. 1 and the like an example in which each of the first three-way valve 16 and the second three-way valve 17 is constituted by a single valve is shown, but the same function is achieved by using a plurality of two-way valves. It can also comprise so that it may play.
- a guide plate 21 is provided in the upper part of the cold water tank 2.
- the guide plate 21 is formed with a slope that changes the flow of drinking water supplied from the raw water pumping pipe 14 into a horizontal flow.
- a water level sensor 22 for detecting the water level of the stored drinking water is provided.
- the pump 23 provided in the raw water pumping pipe 14 is operated, and the drinking water is transferred from the raw water container 5 to the cold water tank 2.
- the capacity of the cold water tank 2 is generally about 2 to 4 liters.
- Examples of the pump 23 include a diaphragm pump that increases and decreases the volume of the pump chamber by reciprocating movement of the diaphragm, and sucks and discharges drinking water in accordance with the increase and decrease, and a gap between a pair of gear teeth and the inner surface of the pump casing. It is possible to employ a gear pump that transports the drinking water confined in the water by the rotation of the gear.
- a flow rate sensor 24 is provided on the discharge port side of the pump 23. When the flow sensor 24 detects that the raw water in the raw water container 5 has run out, the user is notified by a container replacement lamp (not shown).
- a cooling device 25 is provided on the outer periphery of the lower part of the cold water tank 2. Drinking water in the cold water tank 2 is cooled to about 5 ° C. by the cooling device 25.
- the buffer tank 4 includes a cold water tank 2 via a vent pipe 11 and a buffer tank water supply pipe 12, a first three-way valve 16 via a first sterilization pipe 18, and a hot water tank via a hot water tank water supply pipe 20. 3, respectively.
- a float valve 26 is provided at the end of the buffer tank water supply pipe 12 on the buffer tank 4 side. When the level of the drinking water transferred from the cold water tank 2 exceeds a predetermined value, the end is closed by the float valve 26. Thus, the drinking water in the buffer tank 4 does not flow backward to the cold water tank 2 side.
- the float valve 26 when hot water flows back from the hot water tank 3 to the buffer tank 4 through the hot water tank water supply pipe 20, this hot water further passes through the buffer tank water supply pipe 12 to the cold water tank. Backflow to 2 can be prevented. Further, it is possible to prevent the hot water in the buffer tank 4 from flowing back to the cold water tank 2 during sterilization by hot water circulation described later. For this reason, it can prevent that the temperature of the cold water in the cold water tank 2 rises, and that various germs generate
- the lower part of the buffer tank 4 has a conical shape with a diameter reduced toward the lower side. For this reason, it is possible to prevent the drinking water from staying in the lower corner of the buffer tank 4 during sterilization by hot water circulation described later.
- the capacity of the buffer tank 4 is generally about 0.2 to 0.5 liter.
- the hot water tank 3 includes a buffer tank 4 through a hot water tank water supply pipe 20, a second three-way valve 17 through a second sterilization pipe 19, and a water injection valve 9 connected to an outlet pipe 27 of the hot water tank 3. And connected to a drain pipe 28 for discharging residual water in the hot water tank 3.
- a plug 29 is provided at the outlet of the drain pipe 28 except when the residual water is discharged.
- a heater 30 is provided in the hot water tank 3, and the drinking water is heated by the heater 30. The temperature of the heated drinking water is detected by a temperature sensor 31 provided on the wall surface of the hot water tank 3.
- the hot water tank 3 has a sealed structure that is entirely filled with drinking water.
- the capacity of the hot water tank 3 is generally about 1 to 2 liters.
- a sheath heater is used as the heater 30.
- a band heater may be wound around the outer periphery of the hot water tank 3.
- the raw water container 5 housed in the bottle basket 6 is provided with a water outlet 32, and the joint 33 of the raw water pumping pipe 14 is inserted into the water outlet 32 in a lateral direction.
- the joint portion 33 is a hollow cylindrical member that can freely pass drinking water, and is provided at a position higher than the pump 23 that transfers the drinking water.
- a guide member 34 is provided in the vicinity of the joint portion 33. When the water outlet 32 is inserted into the joint portion 33 by the guide member 34, the raw water container 5 is guided so that both axes are coaxial.
- a roller 35 is provided on the lower side of the mounting table 7 on which the bottle basket 6 is mounted and on the bottom plate of the housing 1.
- the bottle basket 6 containing the raw water container 5 can be easily set in the housing 1 or taken out from the housing 1.
- the bottle basket 6 is provided with a handle 36 so that the bottle basket 6 can be easily mounted on the mounting table 7 by grasping the handle 36.
- the raw water container 5 used in this embodiment is of a soft type made of a thin polyethylene terephthalate (PET) resin or polyethylene (PE) resin. This type of raw water container 5 is relatively flexible and bends along with the drinking water to reduce its internal volume.
- the raw water container 5 is generally filled with 10 to 12 liters of drinking water when it is new.
- a soft type was adopted for the raw water container 5, but a hard type whose volume does not change even when drinking water is transferred, or a highly flexible resin film bag such as a cardboard box.
- a bag-in-box type housed in a box can also be employed.
- the air sterilization chamber 10 has a hollow case 39 in which an air intake 37 and an ozone outlet 38 are formed, and an ozone generator 40 that converts oxygen in the air into ozone in the case 39.
- the ozone outlet 38 communicates with the cold water tank 2 through the air introduction path 13.
- the generated ozone is sent to the gas phase portions of the cold water tank 2 and the buffer tank 4 to sterilize them, thereby increasing the sanitary level in the cold water tank 2 and the buffer tank 4.
- a low-pressure mercury lamp, a silent discharge device, or the like can be used.
- the energization to both the three-way valves 16 and 17 is canceled, and as shown in FIG.
- the second three-way valve 17 is secured with a flow path from the raw water container 5 toward the raw water pumping pipe 14.
- the normal flow path which can pour out cold water is constituted.
- the water injection valve 8 is opened, the inside of the cold water tank 2 is pressurized by the weight of the drinking water in the cold water tank 2, and cold water flows out from the outlet of the water injection valve 8 by the pressurization.
- the pump 23 is activated to transfer the drinking water from the raw water container 5 to the cold water tank 2. By this transfer, the water level in the cold water tank 2 is recovered.
- the float valve 26 provided in the buffer tank water supply pipe 12 is opened, and the float valve 26 passes through the buffer tank water supply pipe 12 from the cold water tank 2.
- Drinking water is supplied to the buffer tank 4 until the water level is closed.
- the pump 23 is operated to transfer the drinking water from the raw water container 5 to the cold water tank 2. By this transfer, the water level in the cold water tank 2 is recovered.
- both the three-way valves 16 and 17 are energized to secure a flow path from the raw water pumping pipe 14 to the buffer tank 4 for the first three-way valve 16 as shown in FIG.
- a flow path from the hot water tank 3 to the raw water pumping pipe 14 is secured.
- the raw water pumping pipe 14-the first sterilizing pipe 18-the buffer tank 4-the hot water tank water supply pipe 20-the hot water tank 3-the second sterilizing pipe 19-the raw water pumping pipe 14 is a closed sterilization.
- a flow path is configured.
- sterilization in the sterilization channel can be performed by circulating hot water in the sterilization channel with the pump 23.
- the heater 30 is actuated as appropriate so that the warm water maintains a temperature higher than a predetermined value (for example, 85 ° C.) effective for sterilization. It is also permitted to stop the pump 23 as appropriate during this sterilization. This is because a sufficient sterilization effect is exhibited as long as hot water of a predetermined temperature or more stays in the sterilization channel.
- a predetermined value for example 85 ° C.
- the sterilization flow path configured as described above does not pass through the cold water tank 2. For this reason, the cold water in the cold water tank 2 is not warmed, and low temperature cold water can be provided to the user even during sterilization by hot water circulation.
- This water server is provided with an automatic control unit that turns off the cooling device 25 and the heater 30 when a user's switch operation is input, and turns it on after a predetermined time has elapsed from the input.
- the predetermined time is set to a value of 6 hours or more, for example. Due to the additional input during the OFF period, the measurement for a predetermined time is reset and the measurement is started again.
- Such automatic control can be realized by, for example, timer control.
- the water injection valves 8 and 9 of this water server are shown in FIG. Since the water injection valve 9 has the same structure as the water injection valve 8, the water injection valve 8 will be described below as a representative example.
- the water injection valve 8 includes a valve box 41, a valve body 42, a valve shaft 43, a valve spring 44, and an operation lever 45.
- the inlet 46 and outlet 47 of the water injection valve 8 are formed in the valve box 41.
- the water injection valve 8 is an angle valve having a downward outlet 47. That is, the valve box 41 is formed with a flow path 48 in which the center line of the inlet 46 and the outlet 47 is at a right angle and the direction of the flow path 48 from the inlet 46 to the outlet 47 is changed to a right angle.
- the flow path 48 is connected from the inlet 46 to the outlet pipe 15. *
- the valve box 41 is also formed with a valve body built-in port communicating with the flow path 48 in the vertical direction.
- the valve body 42 is a silicone rubber molded product.
- the valve body incorporation port is sealed in a watertight manner by a lid 50 attached to the valve box 41 and a valve body 42.
- the valve shaft 43 is connected to the valve body 42.
- the valve spring 44 is interposed between the lid 50 and the valve shaft 43 and biases the valve shaft 43 in the valve closing direction (downward).
- the operating lever 45 displaces the valve shaft 43 in the valve opening direction (upward) against the urging force of the valve spring 44.
- valve element 42 comes into contact with the valve seat 51 formed in the flow path 48 by the biasing force of the valve spring 44, and cold water outflow from the outlet 47 is prevented.
- the valve shaft 43 fixed to the upper end side is biased by the valve spring 44 according to the lever principle with the upper end side of the operation lever 45 as a fulcrum. It is raised against.
- the valve body 42 connected to the lower end of the valve shaft 43 is elastically deformed, and a gap is formed between the lower portion of the valve body 42 and the valve seat 51, and cold water reaches the outlet 47 through this gap.
- valve shaft 43 is normally prevented from being pulled up by the lock member 52.
- the lock member 52 is displaced to a lock release position that allows the valve shaft 43 to be lifted.
- the water injection valve 8 includes a body portion 54 made of an ultraviolet light transmissive material, and an ultraviolet light emission source 55 that irradiates the body portion 54 with ultraviolet light.
- the entire flow path 48 is formed in the body portion 54.
- the inner wall surface of the flow path 48 is a surface that guides drinking water from the inlet 46 to the outlet 47.
- the valve seat 51 is also included in the body portion 54. Since the ultraviolet light emitted from the ultraviolet light source 55 spreads in the body portion 54 made of an ultraviolet light transmitting material, it reaches the inner wall surface in a wide range of the flow path 48. Ultraviolet rays that reach the inner wall surface of the flow channel 48 near the valve seat 51 and the valve body 42 of the flow channel 48 pass through the inner wall surface and hit the surface of the valve body 42. In this way, a wide range of the inner wall surface of the flow path 48 and the surface of the valve body 42 is sterilized by the ultraviolet rays from the ultraviolet light emission source.
- valve box 41 is determined by the body portion 54. This is to simplify the structure.
- the body portion 54 can be housed in a separate valve box in order to provide structural strength and cosmetic properties.
- the ultraviolet light emission source 55 an ultraviolet light emitting diode or a mercury lamp can be used.
- the ultraviolet light emitted from the ultraviolet light source 55 is preferably a C wave (wavelength of less than 280 nm) having the best bactericidal properties.
- the ultraviolet light emission source 55 is supplied with power from the housing 1 side.
- the power supply may be performed at an appropriate time as long as bacterial propagation in the water injection valve 8 can be suppressed to a number that does not cause a problem in terms of hygiene.
- the ultraviolet light emission source 55 can be periodically turned on and off by timer control. It is also possible to link the cooling device 25 and the heater 30 OFF / ON with the UV light emission source 55 ON / OFF.
- the ultraviolet light emission source 55 is disposed below the inlet side pipe line 56 extending between the inlet 46 and the valve seat 51. For this reason, the ultraviolet light emission source 55 can irradiate the inner wall surface of the inlet side pipe 56 with ultraviolet rays, and the inner wall surface of the outlet side pipe line 57 extending between the valve seat 51 and the outlet 47 also has an inlet side pipe. Irradiation can be performed without detouring the path 56.
- the body portion 54 functions as an optical path capable of guiding the ultraviolet rays from the ultraviolet light emission source 55 to the inner wall surface of the entire flow path 48, the body portion 54 is appropriately used by using one or more kinds of ultraviolet transmissive materials. Can be formed.
- the inner wall surface of the outlet side pipe line 57 is made of an ultraviolet transmitting material 58 containing a photocatalyst.
- the photocatalyst exhibits redox ability when it is excited by absorbing ultraviolet rays. Titanium oxide can be used as a photocatalyst.
- the ultraviolet transmissive material 58 is a coating material obtained by diffusing photocatalyst particles in an ultraviolet transmissive resin.
- the ultraviolet light transmissive resin include polypropylene, polyethylene, and polyvinyl alcohol.
- the remaining part of the body portion 54 excluding the ultraviolet light transmitting material 58 is made of another ultraviolet light transmitting material that is more excellent in ultraviolet light transmission than the ultraviolet light transmitting material 58.
- the ultraviolet light transmitting material 58 is coated on the molding surface portion serving as the outlet side pipe line 57.
- the other ultraviolet transmitting material the above-described ultraviolet transmitting resin or glass can be used. Even if a photocatalyst is present at a location off the inner wall surface of the channel 48, it does not contribute to sterilization and is wasted. For this reason, it is preferable not to positively contain the photocatalyst in the remainder excluding the ultraviolet light transmitting material 58 and to give the ultraviolet light transmission superior to the ultraviolet light transmitting material 58.
- the ultraviolet light emitted from the ultraviolet light emission source 55 strikes the ultraviolet transmitting material 58 from the outside of the outlet side pipe line 57. A part of the ultraviolet light hitting the ultraviolet transmitting material 58 passes through the diffusion gap of the photocatalyst particles and reaches the inner wall surface of the outlet side pipe 57. Part of the ultraviolet rays reaching the inner wall surface is absorbed by the photocatalyst here. Ultraviolet rays that have not been absorbed by the photocatalyst when reaching the inner wall surface pass through the inner wall surface.
- a bactericidal action due to the oxidation-reduction ability of the photocatalyst that absorbs the ultraviolet light a water repellent action due to the photocatalyst that absorbs the ultraviolet light, and a bactericidal action due to the ultraviolet light passing through the photocatalyst are obtained. It is done. Since the bactericidal action by the oxidation-reduction ability of the photocatalyst is stronger than the bactericidal action by the ultraviolet light itself, the bactericidal property on the inner wall surface of the outlet side pipe 57 is enhanced by the photocatalyst.
- the ultraviolet ray transmitting material 58 is preferably limited to the inner wall surface of the outlet side conduit 57. If the photocatalyst is contained in the inner wall surface on the inlet side of the valve seat 51 of the flow path 48, the drinking water is decomposed and hydrogen is generated by the oxidation-reduction ability of the photocatalyst. While the valve is closed, there is no escape space for hydrogen, and there is a concern that hydrogen permeates into the components of the water injection valve 8, particularly the synthetic resin components, and accelerates the deterioration of the components. If only the inner wall surface of the outlet side pipe 57 is formed of the ultraviolet light transmitting material 58, there is no concern. When the inner wall surface on the inlet side with the valve seat 51 of the channel 48 as a boundary is formed of the ultraviolet light transmitting material 58, it is preferable to take measures against deterioration by hydrogen, such as forming the body portion 54 of glass.
- the outer wall surface portion 59 along the flow path 48 is covered with the ultraviolet reflecting layer 60 so as not to be exposed to the outside.
- the outer wall surface portion 59 along the flow channel 48 can be said to be the outer surface of the meat portion forming the flow channel 48.
- the ultraviolet reflection layer 60 reflects ultraviolet rays from the ultraviolet light emission source 55.
- the ultraviolet reflecting layer 60 can be realized by performing surface treatment such as vacuum deposition or plating on the molded body portion 54 or fitting a metal cover to the molded body portion 54. There is no need to cover the entire outer wall surface portion 59 with the ultraviolet reflecting layer 60, and an area not covered with the ultraviolet reflecting layer 60 may be formed for mounting other components.
- the external thread portion forming the combination surface with the inner surface of the arrangement opening of the ultraviolet light emission source 55 and the lid 50 is included in the outer wall surface portion 59, but is covered with the ultraviolet light emission source 55 and the lid 50, so 60 is not covered.
- the ultraviolet rays reflected by the ultraviolet reflecting layer 60 change inward, the ultraviolet rays are easily directed toward the inner wall surface of the flow path 48 and the surface of the valve element 42. Since the ultraviolet reflection layer 60 surrounds the periphery of the flow path 48, even if the ultraviolet light source 55 is provided at one location, the ultraviolet light is repeatedly reflected by the ultraviolet reflection layer 60 and goes around the inlet side pipe 56. , Around the outlet side pipe 57.
- the ultraviolet light emitted from the ultraviolet light source 55 spreads in the body portion 54 that is transparent to ultraviolet rays, and the ultraviolet light sterilizes a wide range of the inner wall surface of the flow path 48 and the surface of the valve body 42. Therefore, bacterial growth at the water injection valves 8 and 9 can be prevented. As a result, even if droplets of coffee, milk, etc. or floating bacteria in the outside air adhere to the inner wall surface of the outlet side pipe line 57, it is possible to prevent propagation from expanding to the cold water tank 2 and the hot water tank 3.
- the water server is easily sterilized because ultraviolet rays that reach the outer wall surface 59 along the flow path 48 are reflected by the ultraviolet reflecting layer 60 and are easily directed to the inner wall surface of the flow path 48 and the surface of the valve body 42. Can be increased.
- this water server employs an angle valve having a downward outlet 47 for the water injection valves 8 and 9, even if ultraviolet rays leak from the outlet 47 to the outside, it is difficult to hit the user.
- the ultraviolet light emitting source 55 is disposed below the inlet side pipe 56 in this water server, the inner wall surface of the inlet side pipe 56 can be irradiated with ultraviolet rays. In addition, irradiation can be performed without detouring the inlet-side pipeline 56. Therefore, this water server is easy to efficiently apply ultraviolet rays to the inner wall surface of the entire flow path 48.
- this water server consists of the ultraviolet-ray permeable material 58 in which the inner wall surface of the exit side pipe line 57 contains a photocatalyst
- the bactericidal property in the inner wall surface of the exit side pipe line 57 can be improved with a photocatalyst
- Residual water droplets can be prevented by the water repellent ability of the photocatalyst.
- splash of coffee, milk or the like is prevented from adhering to the inner wall surface of the outlet side pipe line 57, and floating bacteria attached to the inner wall surface of the outlet side pipe line 57 are further prevented from entering the inlet side pipe line 56. can do.
- the sterilizing ability of the water injection valves 8 and 9 may be set so that the floating bacteria attached to the inner wall surface of the outlet side conduit 57 cannot propagate until reaching the inlet 46 of the water injection valves 8 and 9.
- the adoption or cover range of the ultraviolet light transmitting material 58 and the ultraviolet reflective layer 60 containing the photocatalyst may be appropriately determined as means for satisfying the setting.
- a water server of the type that places the water outlet of the raw water container downward a water server that sets the raw water container on the top of the casing and gravity-feeds drinking water to the temperature adjustment tank, omits the buffer tank
- the present invention can be widely applied to other types of water servers such as a water server of a type that moves from a cold water tank to a hot water tank.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Devices For Dispensing Beverages (AREA)
Abstract
Description
2 冷水タンク
3 温水タンク
8、9 注水バルブ
15 出口管
27 出口管
41 弁箱
42 弁体
46 入口
47 出口
48 流路
51 弁座
54 ボディ部
55 紫外線発光源
56 入口側管路
57 出口側管路
58 紫外線透過材
59 外壁面部
60 紫外線反射層
Claims (4)
- 筐体(1)に収められた温度調整タンク(2)と、前記温度調整タンク(2)に接続された注水バルブ(8)とを備え、前記温度調整タンク(2)内の飲料水が前記注水バルブ(8)の出口(47)から流出するウォーターサーバーにおいて、
前記注水バルブ(8)の入口(46)から前記出口(47)へ至る流路(48)が紫外線透過性の材料で形成されたボディ部(54)と、前記ボディ部(54)に紫外線を照射する紫外線発光源(55)とを備えていることを特徴とするウォーターサーバー。 - 前記ボディ部(54)のうち、前記流路(48)に沿った外壁面部(59)が、外部に露出しないように紫外線反射層(60)で覆われている請求項1に記載のウォーターサーバー。
- 前記注水バルブ(8)が、下向きの前記出口(47)をもったアングル弁からなり、
前記紫外線発光源(55)が、前記入口(46)と弁座(51)との間に亘る入口側管路(56)の下方に配置されている請求項2に記載のウォーターサーバー。 - 前記弁座(51)と前記出口(47)との間に亘る出口側管路(57)の内壁面が、光触媒を含有する紫外線透過材(58)からなる請求項1から3のいずれか1項に記載のウォーターサーバー。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201380075061.8A CN105050940B (zh) | 2013-03-27 | 2013-12-20 | 饮水机 |
EP13879694.1A EP2980013A4 (en) | 2013-03-27 | 2013-12-20 | WATER SERVER |
US14/780,136 US20160046508A1 (en) | 2013-03-27 | 2013-12-20 | Water dispenser |
KR1020157030753A KR102138954B1 (ko) | 2013-03-27 | 2013-12-20 | 워터 서버 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2013-066139 | 2013-03-27 | ||
JP2013066139A JP6117586B2 (ja) | 2013-03-27 | 2013-03-27 | ウォーターサーバー |
Publications (1)
Publication Number | Publication Date |
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WO2014155875A1 true WO2014155875A1 (ja) | 2014-10-02 |
Family
ID=51622906
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2013/084231 WO2014155875A1 (ja) | 2013-03-27 | 2013-12-20 | ウォーターサーバー |
Country Status (7)
Country | Link |
---|---|
US (1) | US20160046508A1 (ja) |
EP (1) | EP2980013A4 (ja) |
JP (1) | JP6117586B2 (ja) |
KR (1) | KR102138954B1 (ja) |
CN (1) | CN105050940B (ja) |
TW (1) | TWI605007B (ja) |
WO (1) | WO2014155875A1 (ja) |
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WO2017221719A1 (ja) * | 2016-06-20 | 2017-12-28 | 富士山の銘水株式会社 | 飲料水サーバー |
CN109133260A (zh) * | 2017-06-27 | 2019-01-04 | 旭化成株式会社 | 杀菌器具、供给装置以及杀菌方法 |
CN109179567A (zh) * | 2018-10-12 | 2019-01-11 | 玉环达丰环保设备有限公司 | 一种杀菌组件及杀菌水龙头 |
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US20230322541A1 (en) * | 2022-04-07 | 2023-10-12 | Quench Usa, Inc. | Cleaning modes in water dispenser |
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Also Published As
Publication number | Publication date |
---|---|
CN105050940B (zh) | 2017-10-24 |
TW201502055A (zh) | 2015-01-16 |
EP2980013A1 (en) | 2016-02-03 |
JP6117586B2 (ja) | 2017-04-19 |
US20160046508A1 (en) | 2016-02-18 |
JP2014189299A (ja) | 2014-10-06 |
EP2980013A4 (en) | 2016-09-21 |
KR20150136112A (ko) | 2015-12-04 |
TWI605007B (zh) | 2017-11-11 |
CN105050940A (zh) | 2015-11-11 |
KR102138954B1 (ko) | 2020-07-28 |
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