EP0635454A1 - Anti-drip device - Google Patents
Anti-drip device Download PDFInfo
- Publication number
- EP0635454A1 EP0635454A1 EP94202100A EP94202100A EP0635454A1 EP 0635454 A1 EP0635454 A1 EP 0635454A1 EP 94202100 A EP94202100 A EP 94202100A EP 94202100 A EP94202100 A EP 94202100A EP 0635454 A1 EP0635454 A1 EP 0635454A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- outflow
- outflow path
- interruption
- spray nozzle
- path
- 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.)
- Granted
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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
- B67D1/12—Flow or pressure control devices or systems, e.g. valves, gas pressure control, level control in storage containers
- B67D1/1256—Anti-dripping devices
-
- 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
- B67D1/16—Devices for collecting spilled beverages
Definitions
- This invention relates to an anti-(after)drip device at the outflow pipe of a dosing device, in particular a beverage machine.
- German 'Offenlegungsschrift' no. 2064456 discloses a dosing device where the outflow pipe can be closed by a valve which can be controlled by a outflow gutter tiltable about a horizontal axis and having a closed and an open outflow end. In one tilted end position of the outflow gutter, where the gutter slants downwards in the direction of the closed end, the valve is kept in closed position in the outflow pipe through spring bias. Dripping liquid, if any, of a previous dosing operation falls into the outflow gutter and is collected in the closed end thereof.
- the valve By tilting the open outflow end of the gutter downwards, the valve is moved against the spring bias into the open position and a particular amount of liquid flows out through the outflow gutter into a cup or similar receptacle being held in readiness. Upon completion of the dosing operation, the valve is closed again and dripping residual liquid is collected in the closed end of the outflow gutter again.
- the object of the present invention is to provide a device for preventing after-drip at the outflow pipe of a dosing device, in particular after-drip onto the cup supporting position in a beverage machine, without the disadvantages of known proposals.
- a branch is provided for a second outflow path having a direction which is different from that of the first outflow path and slants downwards, which branch can be bridged by the liquid at a relatively high flow velocity, so that the liquid flow follows the first outflow path, whereas at decreasing flow velocity the residual liquid follows the second outflow path through the branch.
- the outflow path of the outflow pipe is interrupted in an interruption, a supply part of the first outflow path being located upstream of the interruption and an outflow part of the first outflow path being located downstream of the interruption.
- the greater part will flow out at a relatively high velocity, so that the interruption in the first outflow path of the outflow pipe will be bridged by the flowing liquid.
- the velocity decreases, so that residual liquid can no longer reach the part of the first outflow path downstream of the interruption and can be diverted within the device by way of the second outflow path to a drip-tray or like collecting reservoir.
- the device according to the invention is eminently suitable for use with a beverage machine of compact design, where it is advantageous if the discharge pipe for conveying liquid from a preparation unit or a supply container to the point where a cup or other receptacle is to be arranged, can extend at least substantially horizontally, ending in a 90° angled outflow extending down towards the cup supporting surface.
- the drop of the outflow pipe is slight and thus the liquid velocity is low at the end of a dosing operation.
- protracted after-drip can arise and there is a substantial chance of contamination of the cup and/or the cup supporting surface when a cup is being removed prematurely.
- the device according to the invention will limit such prolonged after-drip to a minimum.
- a coupling sleeve can be arranged which encloses a collecting chamber with a discharge channel for residual liquid.
- Fig. 1 diagrammatically shows a longitudinal elevation of the device, reference character 1 indicating the slanting terminal outflow path of a discharge pipe of a beverage machine or like dosing device (not shown).
- the first outflow path 1 comprises a supply part 2 located upstream of an interruption 3 and an outflow part 4 with an outflow opening 5, located downstream of the interruption 3.
- the upstream supply part 2 has an inner diameter a and the downstream outflow part 4 has an inner diameter b , with b being preferably greater than a .
- the supply part 2 ends at the interruption 3 in a spray nozzle 6 which, in the present exemplary embodiment, has an inner diameter a '.
- An upper side 7 of the spray nozzle 6 is preferably extended in downstream direction relative to the lower side 8 of the spray nozzle 6. Accordingly, in this embodiment the spray nozzle 6 comprises a bevelled outlet end 9 which slants downwards in upstream direction.
- the upstream inlet end 10 of the discharge part 4 forms part of an inlet nozzle 11 which has an inner diameter b ' which is greater than a '.
- the inlet nozzle 11 has a non-bevelled inlet end 10, i.e. an edge 12 of the input nozzle 11 is located in a plane at least substantially perpendicular to the longitudinal direction of the supply part 2.
- the device further comprises at least one second outflow path 13 originating in the interruption 3.
- the second outflow path 13 is directed obliquely downwards, but it may also be designed so as to extend perpendicularly downwards.
- the second outflow path 13 will preferably originate in a part of the interruption 3 located below the spray nozzle 6.
- the residual liquid can be discharged via the second outflow path 13.
- the device in this case comprises a collecting chamber 16 and a discharge channel 17.
- the residual liquid is received, typically in the form of drops, in the collecting chamber 16 which is located in a coupling sleeve 18 which embraces the outflow path 1 at the location of the interruption 3. Then residual liquid will be discharged to a suitable location by way of discharge channel 17.
- the device further comprises at least one aeration channel 19 originating at an upper side of the interruption 3.
- the aeration channel 19 is located downstream of the upper side 7 of the spray nozzle 6, more particularly in the prolongation of the discharge channel 17. It is also possible, however, to design the aeration channel 19 so as to originate in the interruption 3 at a point further upstream or downstream.
- the advantage of the aeration channel 19 is that the residual liquid referred to can be discharged particularly easily via the second outflow path 13 without a part of this residual liquid yet being discharged through the outflow opening 5 in the form of drops.
- the time lapse in which the after-drip from the outflow opening 5 ends completely upon closure of the liquid supply to the supply part 2 will be further shortened by virtue of the aeration channel 19.
- the reaction time in which the delivery of liquid from the outflow opening 5 can be completed entirely is therefore improved.
- FIG. 2 shows an alternative embodiment of a device according to the invention. Corresponding parts in Figs. 1 and 2 are indicated by the same reference characters.
- the first outflow path 1 is of at least substantially horizontal design. More particularly, the supply part 2 and the upstream part 20 of the outflow part 4 extend horizontally, the downstream part 21 of the outflow part 4 bending downwards through an angle of approximately 90°.
- the second outflow path 13, in particular the discharge channel 17, extends at least substantially vertically.
- the device of Fig. 2 has as an advantage that it can be made of particularly compact design.
- the inner diameter a ' of the spray nozzle 6 is preferably between 3.5 mm (millimeters) and 5 mm for both embodiments.
- the inner diameter b ' of the inlet nozzle 11 is preferably between 6 mm and 15 mm.
- the distance d between the upper side 7 of the spray nozzle 6 and the inlet end 9 of the inlet nozzle 11 will preferably be between 0.5 mm and 2 mm.
- the inner diameter of the aeration channel 19 is not critical and may for instance be chosen to be 2 mm. However, other diameters are also possible. Similarly, the inner diameter of the discharge channel 17 is not critical and may for instance be chosen to be of the order of magnitude of the inner diameter a ' or b '.
- discharge channel 17 and the aeration channel 19 are arranged in the coupling sleeve 18. It will be clear, however, that supply part 2, outflow part 4, spray nozzle 6, inlet nozzle 11, discharge channel 17 and aeration channel 19 may also be made in one piece.
Landscapes
- Devices For Dispensing Beverages (AREA)
- Filling Of Jars Or Cans And Processes For Cleaning And Sealing Jars (AREA)
Abstract
Description
- This invention relates to an anti-(after)drip device at the outflow pipe of a dosing device, in particular a beverage machine.
- In such appliances and also in filling devices for bottles and the like, some form of prolonged after-drip arises at the end of each dosing operation, which entails a number of disadvantages. In a beverage machine with cups to be arranged under the outlet opening of the outflow pipe, a cup will oftentimes be removed before the dosing operation has been entirely completed. Dripping beverage may then fall onto the outside of the cup or onto the locating position or supporting surface for the cup. Both phenomena have an undesirably contaminatory effect.
- From laid-open Dutch patent application no. 8203763 it is known to avoid after-drip in a dosing device of the above-mentioned type by sucking out drops egressing through the outlet opening of the outflow pipe upon completion of the dosing operation. This requires the provision of a suction channel having its inlet by or near the outlet opening, as well as a vacuum pump.
- German 'Offenlegungsschrift' no. 2064456 discloses a dosing device where the outflow pipe can be closed by a valve which can be controlled by a outflow gutter tiltable about a horizontal axis and having a closed and an open outflow end. In one tilted end position of the outflow gutter, where the gutter slants downwards in the direction of the closed end, the valve is kept in closed position in the outflow pipe through spring bias. Dripping liquid, if any, of a previous dosing operation falls into the outflow gutter and is collected in the closed end thereof. By tilting the open outflow end of the gutter downwards, the valve is moved against the spring bias into the open position and a particular amount of liquid flows out through the outflow gutter into a cup or similar receptacle being held in readiness. Upon completion of the dosing operation, the valve is closed again and dripping residual liquid is collected in the closed end of the outflow gutter again.
- A swivelling outflow gutter with which drops can be diverted laterally of a cup supporting position is also described in German patent specification 3742930.
- In particular if the construction of beverage machines is compact, additional pumps, shut-off valves, swivelling gutters and the like constitute a problem.
- The object of the present invention is to provide a device for preventing after-drip at the outflow pipe of a dosing device, in particular after-drip onto the cup supporting position in a beverage machine, without the disadvantages of known proposals.
- For that purpose, according to the invention, in a first outflow path of the outflow pipe a branch is provided for a second outflow path having a direction which is different from that of the first outflow path and slants downwards, which branch can be bridged by the liquid at a relatively high flow velocity, so that the liquid flow follows the first outflow path, whereas at decreasing flow velocity the residual liquid follows the second outflow path through the branch.
- In a practical constructively simple exemplary embodiment, the outflow path of the outflow pipe is interrupted in an interruption, a supply part of the first outflow path being located upstream of the interruption and an outflow part of the first outflow path being located downstream of the interruption.
- During the delivery of a portion of liquid, the greater part will flow out at a relatively high velocity, so that the interruption in the first outflow path of the outflow pipe will be bridged by the flowing liquid. By the end of the delivery of the dosed amount, the velocity decreases, so that residual liquid can no longer reach the part of the first outflow path downstream of the interruption and can be diverted within the device by way of the second outflow path to a drip-tray or like collecting reservoir.
- In the device according to the invention, therefore, it is ensured that a cup supporting surface can remain clean without the necessity of deploying for that purpose valves, discharge gutters and the like, which take up space and increase the cost price.
- In addition, the device according to the invention is eminently suitable for use with a beverage machine of compact design, where it is advantageous if the discharge pipe for conveying liquid from a preparation unit or a supply container to the point where a cup or other receptacle is to be arranged, can extend at least substantially horizontally, ending in a 90° angled outflow extending down towards the cup supporting surface. Precisely in the case of such a design, the drop of the outflow pipe is slight and thus the liquid velocity is low at the end of a dosing operation. As a result, protracted after-drip can arise and there is a substantial chance of contamination of the cup and/or the cup supporting surface when a cup is being removed prematurely. The device according to the invention, however, will limit such prolonged after-drip to a minimum.
- In further elaboration of the invention, at the location of the interruption in the first outflow path, a coupling sleeve can be arranged which encloses a collecting chamber with a discharge channel for residual liquid.
- The invention will now be further explained with reference to the accompanying drawing, in which:
- Fig. 1 represents a first embodiment of the anti-(after)drip device according to the invention;
- Fig. 2 represents a second embodiment of an anti-(after)drip device according to the invention.
- Fig. 1 diagrammatically shows a longitudinal elevation of the device,
reference character 1 indicating the slanting terminal outflow path of a discharge pipe of a beverage machine or like dosing device (not shown). - The
first outflow path 1 comprises asupply part 2 located upstream of aninterruption 3 and anoutflow part 4 with anoutflow opening 5, located downstream of theinterruption 3. - In the embodiment shown, the
upstream supply part 2 has an inner diameter a and thedownstream outflow part 4 has an inner diameter b, with b being preferably greater than a. - The
supply part 2 ends at theinterruption 3 in a spray nozzle 6 which, in the present exemplary embodiment, has an inner diameter a'. Anupper side 7 of the spray nozzle 6 is preferably extended in downstream direction relative to thelower side 8 of the spray nozzle 6. Accordingly, in this embodiment the spray nozzle 6 comprises a bevelled outlet end 9 which slants downwards in upstream direction. - The
upstream inlet end 10 of thedischarge part 4 forms part of aninlet nozzle 11 which has an inner diameter b' which is greater than a'. Preferably, theinlet nozzle 11 has a non-bevelledinlet end 10, i.e. anedge 12 of theinput nozzle 11 is located in a plane at least substantially perpendicular to the longitudinal direction of thesupply part 2. - The device further comprises at least one
second outflow path 13 originating in theinterruption 3. In the present embodiment, thesecond outflow path 13 is directed obliquely downwards, but it may also be designed so as to extend perpendicularly downwards. Thesecond outflow path 13 will preferably originate in a part of theinterruption 3 located below the spray nozzle 6. - As long as the flow velocity of the metered liquid is still sufficiently high, the
interruption 3 will be bridged. However, as soon as the flow velocity of the liquid falls below a particular value, typically at the end of a dosing cycle, residual liquid will no longer reach theinlet nozzle 11 of theoutflow part 4. Accordingly, this residual liquid does not leave the discharge pipe via theoutflow opening 5, which is typically arranged above a supporting surface or locatingposition 14 for acup 15 or the like, so that the locatingposition 14 remains clean. - In accordance with the invention, the residual liquid can be discharged via the
second outflow path 13. For that purpose the device in this case comprises acollecting chamber 16 and adischarge channel 17. The residual liquid is received, typically in the form of drops, in thecollecting chamber 16 which is located in acoupling sleeve 18 which embraces theoutflow path 1 at the location of theinterruption 3. Then residual liquid will be discharged to a suitable location by way ofdischarge channel 17. - In accordance with a particular embodiment, the device further comprises at least one
aeration channel 19 originating at an upper side of theinterruption 3. In Fig. 1 theaeration channel 19 is located downstream of theupper side 7 of the spray nozzle 6, more particularly in the prolongation of thedischarge channel 17. It is also possible, however, to design theaeration channel 19 so as to originate in theinterruption 3 at a point further upstream or downstream. The advantage of theaeration channel 19 is that the residual liquid referred to can be discharged particularly easily via thesecond outflow path 13 without a part of this residual liquid yet being discharged through theoutflow opening 5 in the form of drops. The time lapse in which the after-drip from the outflow opening 5 ends completely upon closure of the liquid supply to thesupply part 2 will be further shortened by virtue of theaeration channel 19. The reaction time in which the delivery of liquid from the outflow opening 5 can be completed entirely is therefore improved. - Fig. 2 shows an alternative embodiment of a device according to the invention. Corresponding parts in Figs. 1 and 2 are indicated by the same reference characters.
- In Fig. 2 the
first outflow path 1 is of at least substantially horizontal design. More particularly, thesupply part 2 and theupstream part 20 of theoutflow part 4 extend horizontally, thedownstream part 21 of theoutflow part 4 bending downwards through an angle of approximately 90°. Thesecond outflow path 13, in particular thedischarge channel 17, extends at least substantially vertically. The device of Fig. 2 has as an advantage that it can be made of particularly compact design. - The inner diameter a' of the spray nozzle 6 is preferably between 3.5 mm (millimeters) and 5 mm for both embodiments. The inner diameter b' of the
inlet nozzle 11 is preferably between 6 mm and 15 mm. The distance d between theupper side 7 of the spray nozzle 6 and the inlet end 9 of theinlet nozzle 11 will preferably be between 0.5 mm and 2 mm. - The inner diameter of the
aeration channel 19 is not critical and may for instance be chosen to be 2 mm. However, other diameters are also possible. Similarly, the inner diameter of thedischarge channel 17 is not critical and may for instance be chosen to be of the order of magnitude of the inner diameter a' or b'. - If 125 cc of liquid is supplied to the device according to the invention for filling, for instance, the
cup 15, only a maximum of 2.5 cc of residual liquid will be discharged via the second outflow path. Moreover, the reaction time is considerably improved over that of conventional systems. - Both in Fig. 1 and in Fig. 2, the
discharge channel 17 and theaeration channel 19 are arranged in thecoupling sleeve 18. It will be clear, however, thatsupply part 2,outflow part 4, spray nozzle 6,inlet nozzle 11,discharge channel 17 andaeration channel 19 may also be made in one piece.
Claims (11)
- An anti-(after)drip device at the outflow pipe of a dosing device, in particular a beverage machine, characterized in that, in a first outflow path (1) of the outflow pipe, a branch (3, 16) is provided for a second outflow path (13) having a direction which is different from that of the first outflow path and slants downwards, which branch can be bridged by the liquid at a relatively high flow velocity, so that the liquid flow follows the first outflow path (1), whereas at decreasing flow velocity the residual liquid follows the second outflow path (13) through the branch (3, 16).
- A device according to claim 1, characterized in that the outflow path (1) of the discharge pipe is interrupted in a first interruption (3), a supply part (2) of the first outflow path (1) being located upstream of the interruption (3) and an outflow part (4) of the first outflow path (1) being located downstream of the interruption (3).
- A device according to claim 2, characterized in that the supply part (2) ends downstream in a spray nozzle (6) and the outflow part (4) begins upstream in an inlet end (10), which has a greater inner diameter than the spray nozzle (6).
- A device according to claim 2 or 3, characterized in that a coupling sleeve (18) is arranged at the location of the interruption (3) in the first outflow path (1), said coupling sleeve (18) enclosing a collecting chamber (16) with a discharge channel (17) for the residual liquid.
- A device according to claim 3, characterized in that the inlet end (10) of the outflow part (4) forms part of an inlet nozzle (11).
- A device according to any one of the preceding claims, characterized in that the device further comprises an aeration channel (19) originating in the interruption (3).
- A device according to claims 3 and 6, characterized in that the aeration channel (19) originates in a part of the interruption (3) located above the spray nozzle (6).
- A device according to claim 3, characterized in that the spray nozzle (6) comprises a bevelled outlet end (9) slanting downwards in upstream direction.
- A device according to claim 3, characterized in that said inner diameter of the spray nozzle (6) is between 3.5 mm and 5 mm and said inner diameter of the inlet end (10) is between 6 mm and 15 mm.
- A device according to claim 9, characterized in that the distance between an upper side (7) of the spray nozzle (6) and the inlet end (9) of the outflow part (4) is between 0.5 mm and 2 mm.
- A device according to claim 3, characterized in that the second outflow path originates in a part of the interruption (3) located below the spray nozzle (6).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL9301263 | 1993-07-19 | ||
NL9301263A NL9301263A (en) | 1993-07-19 | 1993-07-19 | Anti (after) drip device. |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0635454A1 true EP0635454A1 (en) | 1995-01-25 |
EP0635454B1 EP0635454B1 (en) | 1997-03-26 |
Family
ID=19862673
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19940202100 Expired - Lifetime EP0635454B1 (en) | 1993-07-19 | 1994-07-18 | Anti-drip device |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0635454B1 (en) |
DE (1) | DE69402263T2 (en) |
DK (1) | DK0635454T3 (en) |
ES (1) | ES2102765T3 (en) |
NL (1) | NL9301263A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1262463A1 (en) * | 2001-06-02 | 2002-12-04 | Cognis Iberia, S.L. | Water-based raw material composition for ceramic materials |
GB2448703A (en) * | 2007-04-24 | 2008-10-29 | Imi Cornelius | Self-draining dispenser nozzle |
CN104771075A (en) * | 2015-03-17 | 2015-07-15 | 宁波全景电器技术有限公司 | Leakage prevention structure for coffee machine and coffee machine adopting leakage prevention structure |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE589168C (en) * | 1933-12-05 | Max Feig | Spouts for tapping vessels | |
DE2064456A1 (en) * | 1970-12-30 | 1972-07-20 | Siemens Elektrogeraete Gmbh | Electric coffee maker |
NL8203763A (en) * | 1982-09-29 | 1984-04-16 | Stork Bepak Bv | Filler valve for metering dispensing unit - has filler tube with closure valve, provided with several out-flow apertures connected to reservoir |
DE3602665A1 (en) * | 1986-01-29 | 1987-08-06 | Wmf Wuerttemberg Metallwaren | Coffee machine |
DE3742930C1 (en) * | 1987-11-18 | 1988-10-06 | Cafina Ag | Coffee machine |
-
1993
- 1993-07-19 NL NL9301263A patent/NL9301263A/en not_active Application Discontinuation
-
1994
- 1994-07-18 ES ES94202100T patent/ES2102765T3/en not_active Expired - Lifetime
- 1994-07-18 EP EP19940202100 patent/EP0635454B1/en not_active Expired - Lifetime
- 1994-07-18 DE DE1994602263 patent/DE69402263T2/en not_active Expired - Lifetime
- 1994-07-18 DK DK94202100T patent/DK0635454T3/en active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE589168C (en) * | 1933-12-05 | Max Feig | Spouts for tapping vessels | |
DE2064456A1 (en) * | 1970-12-30 | 1972-07-20 | Siemens Elektrogeraete Gmbh | Electric coffee maker |
NL8203763A (en) * | 1982-09-29 | 1984-04-16 | Stork Bepak Bv | Filler valve for metering dispensing unit - has filler tube with closure valve, provided with several out-flow apertures connected to reservoir |
DE3602665A1 (en) * | 1986-01-29 | 1987-08-06 | Wmf Wuerttemberg Metallwaren | Coffee machine |
DE3742930C1 (en) * | 1987-11-18 | 1988-10-06 | Cafina Ag | Coffee machine |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1262463A1 (en) * | 2001-06-02 | 2002-12-04 | Cognis Iberia, S.L. | Water-based raw material composition for ceramic materials |
GB2448703A (en) * | 2007-04-24 | 2008-10-29 | Imi Cornelius | Self-draining dispenser nozzle |
CN104771075A (en) * | 2015-03-17 | 2015-07-15 | 宁波全景电器技术有限公司 | Leakage prevention structure for coffee machine and coffee machine adopting leakage prevention structure |
CN104771075B (en) * | 2015-03-17 | 2017-09-26 | 宁波全景电器技术有限公司 | The Anti-dripping structure of coffee machine and application have the coffee machine of the Anti-dripping structure |
Also Published As
Publication number | Publication date |
---|---|
NL9301263A (en) | 1995-02-16 |
DK0635454T3 (en) | 1997-10-13 |
ES2102765T3 (en) | 1997-08-01 |
EP0635454B1 (en) | 1997-03-26 |
DE69402263T2 (en) | 1997-08-28 |
DE69402263D1 (en) | 1997-04-30 |
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