EP0847373B1 - Device for re-suction of water from an outlet pipe in connection with a water purifier - Google Patents

Device for re-suction of water from an outlet pipe in connection with a water purifier Download PDF

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Publication number
EP0847373B1
EP0847373B1 EP96925226A EP96925226A EP0847373B1 EP 0847373 B1 EP0847373 B1 EP 0847373B1 EP 96925226 A EP96925226 A EP 96925226A EP 96925226 A EP96925226 A EP 96925226A EP 0847373 B1 EP0847373 B1 EP 0847373B1
Authority
EP
European Patent Office
Prior art keywords
water
conduit
outlet pipe
outlet
ejector
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Lifetime
Application number
EP96925226A
Other languages
German (de)
French (fr)
Other versions
EP0847373A1 (en
Inventor
Anders Haegermarck
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Electrolux AB
Original Assignee
Electrolux AB
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 Electrolux AB filed Critical Electrolux AB
Publication of EP0847373A1 publication Critical patent/EP0847373A1/en
Application granted granted Critical
Publication of EP0847373B1 publication Critical patent/EP0847373B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B67D1/00—Apparatus or devices for dispensing beverages on draught
    • B67D1/08—Details
    • 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
    • B67D2210/0001—Filters for liquid

Definitions

  • the present invention relates to a water purifier comprising a filter, an inlet conduit for pressurized water, a control valve in said inlet conduit, an outlet conduit having an outlet pipe, and a device for retraction of water from said outlet pipe when said control valve is closed.
  • DE-U-1969259 discloses a device for preventing a flow of water from a water heater during the stage of heating caused by the increasing volume of the water during heating.
  • the device comprises a Venturi nozzle provided in the inlet conduit, and a storage space into which an amount of water flows by gravity between tappings and is drawn by the Venturi nozzle during inflow of water.
  • the water heater is partly emptied between tappings, which means that the outlet of water from the device will be delayed when the inlet valve is opened.
  • the object of the present invention is to provide a device in connection with water purifiers of the type mentioned above where the dripping from the outlet pipe is eliminated in an extremely simple way by using simple components in combination with an ejector. Simultaneously the device functions as a pressure relief valve if the outlet pipe is clogged.
  • the object of the invention is obtained in that the device comprises an ejector connected to said outlet conduit, and a space for storing water retracted from said outlet pipe, said space being connected to said outlet conduit via said ejector and to the atmosphere, and said space being located at a lower level than said outlet pipe.
  • Fig.1 shows a schematic view of a water purifier being equipped with a device according to the present invention
  • Fig. 2 is a detailed view of the ejector according to the present invention and the components cooperating with said ejector.
  • the water purifier 10 comprises a filter 12, an outlet conduit 14 emanating from the filter 12, a UV-device 16, the outlet conduit 14 passing through the UV-device 16 and terminates into an outlet pipe 18.
  • the water purifier also includes a "reservoir space” 20 that in principle only consists of a hose/conduit, that functions as a "reservoir space”.
  • Said hose/conduit 20 has one end connected to the filter 12 and the other end open towards the atmosphere.
  • the hose/conduit 20 is wound helically and located at a level preferably directly below the outlet end of the outlet pipe 18.
  • the higest point of the active portion of the "reservoir space” 20 is located at a lower level than the highest point of the outlet conduit 14.
  • the horisontal portion of the outlet conduit 14, directly adjacent the outlet pipe 18, constitutes the highest point 15.
  • active portion should be understood as the portion of the "reservoir space” 20 within which the water level varies in operation of the water purifier, i.e. there might be an inactive portion of the reservoir space that is located above the highest point 15 of the outlet conduit.
  • the filter 12 is usually a carbon filter or a particle filter.
  • the water purifier 10 according to Fig.1 is preferably connected to the water distribution system via an inlet conduit 22 that is provided with a valve 24 for turning on /shutting off the pressure in the water distribution system.
  • an ejector 26 is arranged in connection to the outlet opening 28 for the filtered water.
  • the outlet conduit 14 is connected via a first sleeve 30 to the outlet opening 28.
  • the ejector 26 and the outlet opening 28 communicate with a further opening 32 and the hose/conduit 20 is via a second sleeve 34 connected to the further opening 32.
  • the water purifier 10 with the disclosed ejector arrangement funtions in the following way.
  • the water from the water distribution system is fed to the filter 12 via the inlet conduit 22, see the arrow 17 in Fig.1, when the valve 24 is opened. After filtration the water flows in direction of the arrow 25 and discharges via the ejector 26 and the outlet opening 28.
  • the ejector water is sucked from the hose/conduit 20 and this means that the water level in the hose/conduit 20 is lowered, see the arrow 21 in Fig.1.
  • the water sucked out from the hose/conduit 20 is discharged through the outlet opening 28 where it is mixed with the water coming from the filter 12, said mixed water being transported via the outlet conduit 14 and passes through the UV-device 16 where sterilization of the water takes place in a previously known way, i. e. the water is irradiated with UV-light in order to achieve the desired purifying of the water.
  • the UV-device 16 sterilization of the water takes place in a previously known way, i. e. the water is irradiated with UV-light in order to achieve the desired purifying of the water.
  • SE-A-9501467-6 After sterilization the water flows out through the outlet pipe 18, see the arrow 19.
  • the hose/conduit 20 will be emptied from water.
  • the valve 24 By closing the valve 24 the supply of water, via the inlet conduit 22, stops and the eqilibrium state for the water levels in the outlet conduit 14 and the hose/conduit 20 will again occur.
  • Water will rise in the hose/conduit 20, see arrow 23 in Fig. 1, to a certain level and consequently the water in the outlet pipe will be sucked backwards, preferably all the way to the vertical portion of the outlet conduit 14 in Fig. 1. Since no water remains in the outlet pipe 18 there will consequently be no dripping or any second running when the water supply via the inlet conduit 23 is shut off.
  • the outlet pipe 18 If for some reason, e. g. due to lime deposits, the outlet pipe 18 is clogged the "reservoir space"/the hose/the conduit 20 functions as a pressure relief valve since it is open towards the atmosphere and consequently water can be discharged through the "reservoir space”/the hose/the conduit 20 if the outlet pipe 18 is clogged. This is a significant advantage involved with the device according to the present invention.

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  • Physical Water Treatments (AREA)
  • Water Treatment By Sorption (AREA)

Description

The present invention relates to a water purifier comprising a filter, an inlet conduit for pressurized water, a control valve in said inlet conduit, an outlet conduit having an outlet pipe, and a device for retraction of water from said outlet pipe when said control valve is closed.
In water purifiers having a simple design, i.e. purifiers including carbon filters, particle filters, UV-devices etc., the water is forced through the filters by the pressure in the water distribution system. The problem in connection therewith is, that the water continues to drip even after the pressure in the water distribution system has been shut off. Apart from the fact that a dripping outlet pipe causes irritation bacterial growth might also develop in the outlet conduit between the UV-device and the outlet pipe.
In water purifiers of the present type it is previously known to use an ejector that is activated by the water flow through the water purifier. This ejector is connected to a sealed pressure cell, the pressure in said cell being lowered when water flows through the ejector. When the water flow is subsequently shut off the negative pressure in the cell will suck water from the outlet pipe. However, this design includes several work pieces and also a high precision ejector is necessary.
DE-U-1969259 discloses a device for preventing a flow of water from a water heater during the stage of heating caused by the increasing volume of the water during heating. The device comprises a Venturi nozzle provided in the inlet conduit, and a storage space into which an amount of water flows by gravity between tappings and is drawn by the Venturi nozzle during inflow of water. By this system, the water heater is partly emptied between tappings, which means that the outlet of water from the device will be delayed when the inlet valve is opened.
The object of the present invention is to provide a device in connection with water purifiers of the type mentioned above where the dripping from the outlet pipe is eliminated in an extremely simple way by using simple components in combination with an ejector. Simultaneously the device functions as a pressure relief valve if the outlet pipe is clogged. The object of the invention is obtained in that the device comprises an ejector connected to said outlet conduit, and a space for storing water retracted from said outlet pipe, said space being connected to said outlet conduit via said ejector and to the atmosphere, and said space being located at a lower level than said outlet pipe.
An embodiment of the invention will be described in the following, reference being made to the enclosed drawings in which Fig.1 shows a schematic view of a water purifier being equipped with a device according to the present invention; and Fig. 2 is a detailed view of the ejector according to the present invention and the components cooperating with said ejector.
The water purifier 10, schematically disclosed in Fig. 1, comprises a filter 12, an outlet conduit 14 emanating from the filter 12, a UV-device 16, the outlet conduit 14 passing through the UV-device 16 and terminates into an outlet pipe 18. The water purifier also includes a "reservoir space" 20 that in principle only consists of a hose/conduit, that functions as a "reservoir space". Said hose/conduit 20 has one end connected to the filter 12 and the other end open towards the atmosphere. In order to provide the correct volume space the hose/conduit 20 is wound helically and located at a level preferably directly below the outlet end of the outlet pipe 18. More generally, the conditions that must be fulfilled is that the higest point of the active portion of the "reservoir space" 20 is located at a lower level than the highest point of the outlet conduit 14. In the disclosed embodiment the horisontal portion of the outlet conduit 14, directly adjacent the outlet pipe 18, constitutes the highest point 15. The expression "active portion" should be understood as the portion of the "reservoir space" 20 within which the water level varies in operation of the water purifier, i.e. there might be an inactive portion of the reservoir space that is located above the highest point 15 of the outlet conduit.
The filter 12 is usually a carbon filter or a particle filter. The water purifier 10 according to Fig.1 is preferably connected to the water distribution system via an inlet conduit 22 that is provided with a valve 24 for turning on /shutting off the pressure in the water distribution system.
From the detail disclosed in Fig. 2 of the outlet end of the filter 12 it can be seen that an ejector 26 is arranged in connection to the outlet opening 28 for the filtered water. The outlet conduit 14 is connected via a first sleeve 30 to the outlet opening 28.
The ejector 26 and the outlet opening 28 communicate with a further opening 32 and the hose/conduit 20 is via a second sleeve 34 connected to the further opening 32. This means that the outlet conduit 14 and the hose/conduit 20 function as communicating vessels, i.e. the water levels in the outlet conduit 14 and the hose/conduit 20 are located in equilibrium positions relative each other. This normally means that in said eqilibrium state the water level in the outlet conduit 14 is located inside the UV-device and the water level in the hose/conduit 20 is located in the helical portion.
The water purifier 10 with the disclosed ejector arrangement funtions in the following way. The water from the water distribution system is fed to the filter 12 via the inlet conduit 22, see the arrow 17 in Fig.1, when the valve 24 is opened. After filtration the water flows in direction of the arrow 25 and discharges via the ejector 26 and the outlet opening 28. Through action of the ejector water is sucked from the hose/conduit 20 and this means that the water level in the hose/conduit 20 is lowered, see the arrow 21 in Fig.1. The water sucked out from the hose/conduit 20 is discharged through the outlet opening 28 where it is mixed with the water coming from the filter 12, said mixed water being transported via the outlet conduit 14 and passes through the UV-device 16 where sterilization of the water takes place in a previously known way, i. e. the water is irradiated with UV-light in order to achieve the desired purifying of the water. To examplify how a UV-device of the present type is designed reference is made to SE-A-9501467-6. After sterilization the water flows out through the outlet pipe 18, see the arrow 19.
If a sufficient amount of water is discharged through the outlet opening 28, via the ejector 26, the hose/conduit 20 will be emptied from water. By closing the valve 24 the supply of water, via the inlet conduit 22, stops and the eqilibrium state for the water levels in the outlet conduit 14 and the hose/conduit 20 will again occur. Water will rise in the hose/conduit 20, see arrow 23 in Fig. 1, to a certain level and consequently the water in the outlet pipe will be sucked backwards, preferably all the way to the vertical portion of the outlet conduit 14 in Fig. 1. Since no water remains in the outlet pipe 18 there will consequently be no dripping or any second running when the water supply via the inlet conduit 23 is shut off.
If for some reason, e. g. due to lime deposits, the outlet pipe 18 is clogged the "reservoir space"/the hose/the conduit 20 functions as a pressure relief valve since it is open towards the atmosphere and consequently water can be discharged through the "reservoir space"/the hose/the conduit 20 if the outlet pipe 18 is clogged. This is a significant advantage involved with the device according to the present invention.
Although the invention above is described in connection with a water purifier including a filter in combination with a UV-device the invention is in no way restricted to such an application but the invention can also be used in connection with other types of water purifiers where a re-suction is desired to avoid dripping from the outlet pipe 18 when the water supply via the inlet conduit 22 is shut off.

Claims (3)

  1. Water purifier comprising a filter (12), an inlet conduit (22) for pressurized water, a control valve (24) in said inlet conduit, an outlet conduit (14) having an outlet pipe (18), and a device for retraction of water from said outlet pipe (18) when said control valve (24) is closed, characterized in that said device comprises an ejector (26) connected to said outlet conduit (14), and a space (20) for storing water retracted from said outlet pipe, said space (20) being connected to said outlet conduit (14) via said ejector (26) and to the atmosphere, and said space (20) being located at a lower level than said outlet pipe (18).
  2. Water purifier according to claim 1, characterized in that the space (20) for storing retracted water is provided by a conduit, one end of which is connected to the ejector (26) and the other end of which is connected to the atmosphere.
  3. Water purifier according to claim 2, characterized in that the conduit (20) comprises a helically coiled portion.
EP96925226A 1995-07-28 1996-07-12 Device for re-suction of water from an outlet pipe in connection with a water purifier Expired - Lifetime EP0847373B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
SE9502720 1995-07-28
SE9502720A SE9502720L (en) 1995-07-28 1995-07-28 Apparatus and method for preventing droplets from the outlet pipe of a water purifier
PCT/SE1996/000954 WO1997005063A1 (en) 1995-07-28 1996-07-12 Device and method for re-suction of water from an outlet pipe in connection with an water purifier

Publications (2)

Publication Number Publication Date
EP0847373A1 EP0847373A1 (en) 1998-06-17
EP0847373B1 true EP0847373B1 (en) 2001-04-25

Family

ID=20399088

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96925226A Expired - Lifetime EP0847373B1 (en) 1995-07-28 1996-07-12 Device for re-suction of water from an outlet pipe in connection with a water purifier

Country Status (8)

Country Link
EP (1) EP0847373B1 (en)
CN (1) CN1191522A (en)
BR (1) BR9609957A (en)
DE (1) DE69612620T2 (en)
IL (1) IL118826A (en)
MX (1) MX9800702A (en)
SE (1) SE9502720L (en)
WO (1) WO1997005063A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1236683A1 (en) * 2001-03-02 2002-09-04 Lux Asia Pacific Pte Ltd. Water purifier
CN1329591C (en) * 2002-04-05 2007-08-01 松下电器产业株式会社 Liquid disgorging controller and disgorging assembly for the controller

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1969259U (en) * 1965-06-08 1967-09-28 Stiebel Werke G M B H & Co Dr DEVICE TO PREVENT THE FORMATION OF DRIP WATER IN HEATED OVERFLOW HOT WATER TANK.

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2354695A (en) * 1941-08-27 1944-08-01 Mcglashan Alexander Injector apparatus for the recovery of spilled beer and like beverages
US2977025A (en) * 1957-08-08 1961-03-28 Westinghouse Electric Corp Water dispenser
DE3724068A1 (en) * 1987-07-21 1989-02-02 Stiebel Eltron Gmbh & Co Kg Device in a water heater for preventing dripping
ATE72893T1 (en) * 1988-10-29 1992-03-15 Stiebel Eltron Gmbh & Co Kg DEVICE ON A WATER HEATER TO PREVENT DRIPPING.

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1969259U (en) * 1965-06-08 1967-09-28 Stiebel Werke G M B H & Co Dr DEVICE TO PREVENT THE FORMATION OF DRIP WATER IN HEATED OVERFLOW HOT WATER TANK.

Also Published As

Publication number Publication date
SE9502720D0 (en) 1995-07-28
SE9502720L (en) 1997-01-29
DE69612620D1 (en) 2001-05-31
BR9609957A (en) 1999-02-02
IL118826A0 (en) 1996-10-31
DE69612620T2 (en) 2001-10-18
IL118826A (en) 2000-02-29
EP0847373A1 (en) 1998-06-17
MX9800702A (en) 1998-04-30
WO1997005063A1 (en) 1997-02-13
CN1191522A (en) 1998-08-26

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