IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0989310
(2011-11-23)
|
등록번호 |
US-8802174
(2014-08-12)
|
우선권정보 |
IT-TO2010A0930 (2010-11-24) |
국제출원번호 |
PCT/IB2011/055254
(2011-11-23)
|
§371/§102 date |
20130607
(20130607)
|
국제공개번호 |
WO2012/070002
(2012-05-31)
|
발명자
/ 주소 |
- Porzio, Giancarlo
- Carbonini, Carlo
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
0 인용 특허 :
4 |
초록
▼
The present invention relates to a machine for preparing coffee infusions by means of a liquid under pressure, in particular water under pressure, the machine comprising: a pump assembly (11) arranged to raise the pressure of the liquid outgoing from the pump assembly up to a preset pressure value (
The present invention relates to a machine for preparing coffee infusions by means of a liquid under pressure, in particular water under pressure, the machine comprising: a pump assembly (11) arranged to raise the pressure of the liquid outgoing from the pump assembly up to a preset pressure value (PI); one or more dispensing units (14) connected to the pump assembly, each dispensing unit (14) being arranged to dispense the coffee infusion; one or more pressure managing devices (20), each managing device (20) being connected to a certain dispensing unit (14). In the machine (10), the pressure managing device (20) includes a first duct (15) and at least one second duct (16) that are connected in parallel, have a common outlet and are arranged to supply the dispensing unit (14), during the coffee infusion preparation, with liquid at different pressures. The invention further concerns the pressure managing device (20) and a method of preparing the coffee infusion, including dynamically modifying the pressure during the infusion preparation.
대표청구항
▼
1. A machine for preparing coffee infusions by means of a liquid under pressure, the machine being associated with a pump assembly arranged to raise the pressure of the liquid outgoing from the pump assembly up to a preset pressure value, said machine comprising: one or more dispensing units connect
1. A machine for preparing coffee infusions by means of a liquid under pressure, the machine being associated with a pump assembly arranged to raise the pressure of the liquid outgoing from the pump assembly up to a preset pressure value, said machine comprising: one or more dispensing units connected to the pump assembly, each said dispensing unit being arranged to dispense the coffee infusion;one or more pressure managing devices, each said pressure managing device being connected to a certain dispensing unit and includinga first duct and at least one second duct that are connected in parallel, have a common outlet and are arranged to supply the dispensing unit with liquid under pressure, the liquid pressure being different in each duct,whereinsaid first duct is arranged between said pump assembly and said dispensing unit and comprises a valve device electronically controlled by a control unit in order to dynamically control the pressure of the liquid supplied to the dispensing unit by closing/opening said valve;whereinsaid at least one second duct comprises a second valve device electronically controlled by the control unit in order to dynamically control the pressure of the liquid supplied to the dispensing unit by closing/opening said second valve. 2. The machine as claimed in claim 1, wherein said at least one second duct has a common inlet with said first duct and a pressure reducing means arranged to reduce the pressure of the liquid outgoing from the pump assembly. 3. The machine as claimed in claim 1, wherein said at least one second duct is directly supplied with liquid by a main delivering liquid under pressure, said pressure being lower than the preset pressure value. 4. A machine for preparing coffee infusions by means of a liquid under pressure, the machine being associated with a pump assembly arranged to raise the pressure of the liquid outgoing from the pump assembly up to a preset pressure value, said machine comprising: one or more dispensing units connected to the pump assembly, each said dispensing unit being arranged to dispense the coffee infusion;one or more pressure managing devices, each of said pressure managing devices being connected to a certain dispensing unit and includinga first duct and at least one second duct that are connected in parallel, have a common outlet and are arranged to supply the dispensing unit with liquid under pressure, the liquid pressure being different in each duct,whereinsaid first duct is arranged between said pump assembly and said dispensing unit and comprises a valve device electronically controlled by a control unit in order to dynamically control the pressure of the liquid supplied to the dispensing unit by closing/opening said valve;whereinsaid at least one second duct is directly supplied with liquid by a mains delivering liquid under pressure, wherein said pressure is lower than the preset pressure value. 5. A device for managing pressure values of a liquid to be used for dispensing espresso coffee in a coffee machine, the device comprising a first duct and at least one second duct that are connected in parallel, have a common outlet into a single duct connected upstream of a heat exchanger and are arranged to supply a dispensing unit with the liquid at a first pressure and at least one second pressure lower than the first pressure,whereinsaid first duct is connected downstream of a pump assembly and comprises a first valve device arranged to be electronically controlled in order to turn on/off the supply of the dispensing unit with the liquid at said first pressure,whereinsaid at least one second duct comprises a second valve device arranged to be electronically controlled in order to turn on/off the supply of the dispensing unit with the liquid at said second pressure;said first duct and said at least one second duct are configured to operate in parallel when said first and said second valve device are both open. 6. The device for managing pressure values as claimed in claim 5, wherein said at least one second duct and said first duct have a common inlet into a single duct located downstream of said first duct and said second duct;said at least one second duct comprises pressure reducing means arranged to reduce the pressure of the liquid outgoing from the pump assembly. 7. The device for managing pressure values as claimed in claim 5, wherein said at least one second duct is directly supplied with liquid by a mains delivering liquid at said second pressure. 8. A device for managing pressure values of a liquid to be used for dispensing espresso coffee in a coffee machine, the device comprising a first duct and at least one second duct that are connected in parallel, have a common outlet and are arranged to supply a dispensing unit with the liquid at a first pressure and at least one second pressure lower than the first pressure,wherein,said first duct comprises a valve device arranged to be electronically controlled in order to turn on/off the supply of the dispensing unit with the liquid at said first pressure,whereinsaid at least one second duct is directly supplied with liquid by a main delivering liquid at said second pressure;said first duct and said at least one second duct are configured to operate in parallel when said first valve device is open. 9. A method of preparing coffee infusions by means of a coffee machine, said method comprising, during the period required of a dispensing unit to prepare the infusion by supplying a liquid under pressure, at least the steps of: supplying, in a first phase or pre-brewing phase, said liquid at a first pressure;supplying, in a second phase or brewing phase, said liquid at a second pressure higher than or equal to said first pressure;supplying, in a third phase or post-brewing phase, said liquid at a third pressure lower than the second pressure;wherein said supply in the different phases is carried out by:providing a first duct and at least one second duct connected in parallel and having a common outlet connected to a dispensing unit of said coffee machine;dynamically controlling at least one valve device provided in said first duct. 10. The method as claimed in claim 9, wherein: in said pre-brewing phase, said liquid is supplied at a first pressure lower than said second pressure; andin said post-brewing phase, said liquid is supplied at a third pressure lower than or equal to the first pressure. 11. The machine of claim 1, wherein the liquid is water. 12. The machine of claim 2, herein said pressure reducing means includes a pressure reducer. 13. The machine of claim 4, wherein the liquid is water. 14. The device of claim 6, wherein said pressure reducing means includes a pressure reducer.
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