IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0989325
(2006-07-26)
|
등록번호 |
US-8522670
(2013-09-03)
|
우선권정보 |
IT-FI2005A0169 (2005-07-27) |
국제출원번호 |
PCT/EP2006/064678
(2006-07-26)
|
§371/§102 date |
20080410
(20080410)
|
국제공개번호 |
WO2007/014891
(2007-02-08)
|
발명자
/ 주소 |
- Tonelli, Stefano
- Lelli, Massimo
|
출원인 / 주소 |
|
인용정보 |
피인용 횟수 :
4 인용 특허 :
11 |
초록
▼
A hydraulic circuit for instant beverage machines includes a tank, a water extraction pipe contained in the tank, a flow-meter connected to the extraction pipe, a pump, a first vibration-damping valve, a boiler, a second relief and safety valve, a water/steam faucet, a third beverage flow valve, and
A hydraulic circuit for instant beverage machines includes a tank, a water extraction pipe contained in the tank, a flow-meter connected to the extraction pipe, a pump, a first vibration-damping valve, a boiler, a second relief and safety valve, a water/steam faucet, a third beverage flow valve, and a recovery tank.
대표청구항
▼
1. A hydraulic circuit for beverage machines, the hydraulic circuit comprising a tank, a water extraction pipe contained in said tank, a flow-meter connected to said extraction pipe, a pump, a vibration-damping valve, a boiler, a relief and safety valve, a water/steam faucet, a beverage flow valve f
1. A hydraulic circuit for beverage machines, the hydraulic circuit comprising a tank, a water extraction pipe contained in said tank, a flow-meter connected to said extraction pipe, a pump, a vibration-damping valve, a boiler, a relief and safety valve, a water/steam faucet, a beverage flow valve for delivering a beverage outside a beverage machine, a recovery tank, said relief and safety valve comprising a water/steam inlet, a first water/steam outlet directed to said faucet, a second outlet for directing pressurized water to said beverage flow valve and a third outlet for discharging water into the recovery tank, said third outlet being controlled by a solenoid valve equipped with a control coil, wherein said solenoid valve is equipped with a first maximum pressure limiting device, wherein said second outlet is provided with a second maximum pressure limiting device for directing the pressurized water to the beverage flow valve, and wherein said second outlet has an inlet which is provided with a valve equipped with a third maximum pressure limiting device which enables passage of liquid in order to release pressure from the beverage flow valve. 2. The hydraulic circuit of claim 1, wherein said first maximum pressure limiting device comprises a first pre-calibrated spring. 3. The hydraulic circuit of claim 1, wherein said second maximum pressure limiting device comprises a second pre-calibrated spring. 4. The hydraulic circuit of claim 1, wherein said third maximum pressure limiting device comprises a third pre-calibrated spring. 5. The hydraulic circuit of claim 1, wherein said relief and safety valve is of the “slide” type. 6. The hydraulic circuit of claim 1, wherein said faucet comprises an inlet, a first outlet, a second outlet, a faucet lever for selecting one of the first outlet and the second outlet, a support provided with sensors for detecting the position of said faucet lever, and a slider capable of opening and closing passages of said faucet. 7. The hydraulic circuit of claim 6, wherein said faucet is provided with a device for determining the position of said slider. 8. The hydraulic circuit of claim 7, wherein said device for determining the position of said slider comprises at least one REED sensor and at least one magnet. 9. The hydraulic circuit of claim 1, wherein the first maximum pressure limiting device remains closed during normal operation and opens up if pressure exceeds a specific threshold, or if a specific command is sent to the control coil of said solenoid valve. 10. The hydraulic circuit of claim 1, wherein the first maximum pressure limiting device comprises a first pre-calibrated spring calibrated at about 16/20 bars, wherein the second maximum pressure limiting device comprises a second pre-calibrated spring calibrated at about 3 bars, wherein the third maximum pressure limiting device comprises a third pre-calibrated spring calibrated at about 0.2 bars. 11. The hydraulic circuit of claim 1, wherein the control coil of the third outlet is configured to be energized with a command and with a spring calibrated at about 16/20 bars.
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