Beverage preparation machine and method for cleaning a beverage preparation machine
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B08B-009/027
A01J-015/00
출원번호
US-0832645
(2010-07-08)
등록번호
US-8770099
(2014-07-08)
우선권정보
EP-09405110 (2009-07-08)
발명자
/ 주소
Reyhanloo, Shahryar
출원인 / 주소
Jura Elektroapparate AG
대리인 / 주소
Alston & Bird LLP
인용정보
피인용 횟수 :
3인용 특허 :
35
초록▼
The invention relates to a beverage preparation machine comprising an apparatus for frothing or heating milk, which apparatus is connected via a milk suction hose to a milk container, and a cleaning apparatus for cleaning the milk suction hose and the apparatus for frothing or heating milk by means
The invention relates to a beverage preparation machine comprising an apparatus for frothing or heating milk, which apparatus is connected via a milk suction hose to a milk container, and a cleaning apparatus for cleaning the milk suction hose and the apparatus for frothing or heating milk by means of a flushing fluid. The milk can be sucked from the milk container into the apparatus for frothing or heating milk by means of a vacuum which can be generated in the apparatus for frothing or heating milk. The cleaning apparatus contains a switching valve which can be switched into an operating position in which a milk connection is enabled between the milk container and the apparatus for frothing or heating milk via the milk suction hose and into a flushing position in which a first flushing fluid connection is enabled between a flushing fluid outlet of the beverage preparation machine and the apparatus for frothing or heating milk via a flushing hose, the switching valve switched into the flushing position and the milk suction hose.
대표청구항▼
1. A beverage preparation machine comprising: a steam outlet for dispensing steam or a hot water/steam mixture,an apparatus for frothing or heating milk, which apparatus is connected via a milk suction hose to a milk container, anda cleaning apparatus configured to clean the milk suction hose and th
1. A beverage preparation machine comprising: a steam outlet for dispensing steam or a hot water/steam mixture,an apparatus for frothing or heating milk, which apparatus is connected via a milk suction hose to a milk container, anda cleaning apparatus configured to clean the milk suction hose and the apparatus for frothing or heating milk by means of a flushing fluid,wherein the apparatus for frothing or heating milk comprises a chamber, and a milk suction hose docking, wherein the milk suction hose docking is in fluid communication with the chamber and is configured to receive one end of the milk suction hose,wherein a steam nozzle for supplying steam or the hot water/steam mixture into the chamber is provided, the steam nozzle being connected to the steam outlet,wherein the apparatus for frothing or heating milk is configured to cause a vacuum to be generated in the chamber by supplying steam or the hot water/steam mixture from the steam outlet into the chamber via the steam nozzle,wherein the cleaning apparatus comprises a switching valve and a flushing hose,wherein the milk suction hose docking is connected to the switching valve via the milk suction hose and the milk suction hose is connected to the milk container via the switching valve,wherein the switching valve is configured to be switched into an operating position in which a milk connection is enabled between the milk container and the chamber via the switching valve and the milk suction hose, and wherein the switching valve is further configured to be switched to a flushing position in which a first flushing fluid connection is enabled between the steam outlet and the chamber via the flushing hose, the switching valve, and the milk suction hose,wherein, when the switching valve is switched to the operating position, milk from the milk container is enabled to be sucked into the chamber via said milk connection by a vacuum generated in the chamber by introducing steam or the hot water/steam mixture from the steam outlet via the steam nozzle into the chamber,wherein when the switching valve is switched to the flushing position, a second flushing fluid connection is enabled between the steam outlet and the chamber via the steam nozzle and a flushing fluid being provided as a hot water/steam mixture is dispensable from the steam outlet to the chamber, andwherein the first flushing fluid connection and the second flushing fluid connection are configured to cause a first fraction of said flushing fluid to be passed through the first flushing fluid connection and a second fraction of the flushing fluid to be passed through the second flushing fluid connection. 2. The beverage preparation machine according to claim 1, wherein the respective volumes of the first fraction and the second fraction are in a predetermined ratio to one another. 3. The beverage preparation machine according to claim 2, in which the predetermined ratio lies in the range of ⅓ to 3. 4. The beverage preparation machine according to claim 1, in which the cleaning apparatus is designed in such a manner that, when the switching valve is switched to the flushing position, following a passage of the flushing fluid, a steam withdrawal from the steam outlet can be achieved in which steam can be passed through the flushing hose, the switching valve and the milk suction hose. 5. The beverage preparation machine according to claim 1, in which a cleaning container containing a cleaning agent is interposed in the first flushing fluid connection between the steam outlet and the switching valve. 6. The beverage preparation machine according to claim 5, in which the cleaning container is disposed on the milk container. 7. The beverage preparation machine according to claim 5, in which the cleaning agent is a cleaning fluid or a cleaning tablet. 8. The beverage preparation machine according to claim 6, in which the cleaning agent is a cleaning fluid or a cleaning tablet. 9. The beverage preparation machine according to claim 1, in which the switching valve can be actuated by means of an electric actuator. 10. A method for cleaning a beverage preparation machine comprising a steam outlet for dispensing steam or a hot water/steam mixture, an apparatus for frothing or heating milk, which apparatus is connected via a milk suction hose to a milk container, and a cleaning apparatus configured to clean the milk suction hose and the apparatus for frothing or heating milk by means of a flushing fluid, wherein the apparatus for frothing or heating milk comprises a chamber and a milk suction hose docking being in fluid communication with the chamber and being configured to receive one end of the milk suction hose, wherein a steam nozzle for supplying steam or a hot water/steam mixture into the chamber is provided, the steam nozzle being connected to the steam outlet, wherein the apparatus for frothing or heating milk is configured to cause a vacuum to be generated in the chamber by supplying steam or a hot water/steam mixture from the steam outlet into the chamber via the steam nozzle, wherein the cleaning apparatus comprises a switching valve and a flushing hose, wherein the milk suction hose docking is connected to the switching valve via the milk suction hose and the milk suction hose is connected to the milk container via the switching valve, wherein the switching valve is configured to be switched into an operating position in which a milk connection is enabled between the milk container and the chamber via the switching valve and the milk suction hose, and wherein the switching valve is further configured to be switched to a flushing position in which a first flushing fluid connection is enabled between the steam outlet and the chamber via the flushing hose, the switching valve and the milk suction hose, wherein when the switching valve is switched to the operating position, milk from the milk container is enabled to be sucked into the chamber via said milk connection by a vacuum generated in the chamber by introducing steam or a hot water/steam mixture from the steam outlet via the steam nozzle into the chamber, and wherein, when the switching valve is switched to the flushing position, a second flushing fluid connection is enabled between the steam outlet and the chamber via the steam nozzle and a flushing fluid being provided as a hot water/steam mixture that is dispensable from the steam outlet to the chamber, and wherein the first flushing fluid connection and the second flushing fluid connection are configured to cause a first fraction of said flushing fluid to be passed through the first flushing fluid connection and a second fraction of the flushing fluid to be passed through the second flushing fluid connection, wherein the method comprises: a) switching the switching valve to the flushing position in which the first flushing fluid connection is enabled between the steam outlet and the chamber of the apparatus for frothing or heating milk via the flushing hose, the switching valve and the milk suction hose,b) dispensing the flushing fluid being provided as a hot water/steam mixture from the steam outlet and passing a first fraction of the respectively dispensed flushing fluid to the chamber via the flushing hose, the switching valve and the milk suction hose and passing a second fraction of the respectively dispensed flushing fluid to the chamber via the steam nozzle, andc) ending the dispensing of the flushing fluid. 11. The method according to claim 9, in which the ratio between the respective volume of the first fraction and the respective volume of the second fraction is set. 12. The method according to claim 11, in which the ratio is set to a value which lies in the range of ⅓ to 3. 13. The method according to claim 10 which after step c) comprises: d) passing steam from the steam outlet to the apparatus for frothing or heating milk via the flushing hose, the switching valve switched into the flushing position and the milk suction hose, which steam conveys flushing fluid residue from the milk suction hose or the apparatus for frothing or heating milk, ande) ending the passage of steam.
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