Fluid dispensing system suitable for dispensing liquid flavorings
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IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B65D-088/54
B65D-088/00
출원번호
UP-0464674
(2006-08-15)
등록번호
US-7631788
(2009-12-24)
발명자
/ 주소
Litterst, Charles
Fine, Richard
출원인 / 주소
Zavida Coffee Company Inc
대리인 / 주소
Bereskin & Parr LLP
인용정보
피인용 횟수 :
6인용 특허 :
36
초록▼
An apparatus and method for dispensing a discrete volume of fluid. The apparatus includes a pump operable in discrete cycles, a power source connected to the pump, and a controller connected to at least one of the pump and the power source. The controller is configured to vary the power provided fro
An apparatus and method for dispensing a discrete volume of fluid. The apparatus includes a pump operable in discrete cycles, a power source connected to the pump, and a controller connected to at least one of the pump and the power source. The controller is configured to vary the power provided from the power source to the pump during at least a portion of each discrete cycle based on characteristics of the pump and the fluid. For example, the controller may vary power by controlling the duration of the provision of power, or by controlling the amplitude of the power. Varying the power is intended to improve the accuracy of the discrete volume of fluid dispensed. Correspondingly, the method of dispensing a discrete volume of fluid includes receiving information pertaining to the fluid to be dispensed, and adjusting a provision of power to a pump based on the information. The method may include adjusting the duration of the provision of power, or adjusting the amplitude of the provision of power.
대표청구항▼
We claim: 1. A liquid dispensing apparatus for beverages, the apparatus comprising: a) a liquid reservoir for storing a liquid flavoring; b) a diaphragm pump operable over discrete cycles, each discrete cycle comprising an intake stroke in which the liquid flavoring is drawn into the diaphragm pump
We claim: 1. A liquid dispensing apparatus for beverages, the apparatus comprising: a) a liquid reservoir for storing a liquid flavoring; b) a diaphragm pump operable over discrete cycles, each discrete cycle comprising an intake stroke in which the liquid flavoring is drawn into the diaphragm pump from the liquid reservoir, and an expulsion stroke in which the liquid flavoring is expelled from the pump through a dispensing outlet, and wherein fully completing both the intake stroke and the expulsion stroke dispenses a predetermined volume of the liquid flavoring; c) a DC power source for generating a series of electrical pulses for applying power to the diaphragm pump, each of the electrical pulses operating the diaphragm pump over at least one of the intake stroke and the expulsion stroke, each of the electrical pulses having pulse characteristics that affect an application of power to the diaphragm pump, the pulse characteristics comprising a pulse duration and a pulse frequency; and d) a controller for controlling the DC power source, the controller being operable to vary at least one of the pulse characteristics based upon characteristics of the diaphragm pump and the liquid flavoring such that the diaphragm pump dispenses the predetermined volume of liquid flavoring over each discrete cycle. 2. The apparatus of claim 1, wherein the controller varies the at least one of the pulse characteristics based upon the characteristics of the diaphragm pump and the liquid flavoring so that the diaphragm pump fully completes both the intake stroke and the expulsion stroke of each discrete cycle. 3. The apparatus of claim 1, wherein the characteristics of the diaphragm pump include a time required to fully complete at least one of the intake stroke or the expulsion stroke of the diaphragm pump. 4. The apparatus of claim 1, wherein the characteristics of the liquid flavoring include the viscosity of the liquid flavoring. 5. The apparatus of claim 1, wherein each of the electrical pulses comprises a high portion for operating the diaphragm pump over the intake stroke, wherein the duration of the high portion exceeds the time required for the diaphragm pump to fully complete the intake stroke. 6. The apparatus of claim 1, wherein each of the electrical pulses comprises a low portion for operating the diaphragm pump over the intake stroke, wherein the duration of the low portion exceeds the time required to fully complete the intake stroke. 7. The apparatus of claim 1, wherein each electrical pulse comprises a high portion corresponding to operating the diaphragm pump over the expulsion stroke, and wherein the duration of the high portion exceeds the time required to complete the expulsion stroke. 8. The apparatus of claim 1, wherein each electrical pulse comprises a low portion corresponding to operating the diaphragm pump over the expulsion stroke, and wherein the duration of the low portion exceeds the time required to fully complete the expulsion stroke. 9. The apparatus of claim 1, wherein the controller is operable to receive a user request for a particular beverage, and determine a number of the electrical pulses to be generated by the DC power source based upon at least the user request. 10. The apparatus for claim 9, wherein the controller further comprises a timing circuit operatively coupled to the DC power source, wherein the timing circuit generates a number of timing pulses corresponding to the number of electrical pulses; and wherein the DC power source comprises a switch operatively coupled to the timing circuit and the diaphragm pump, wherein the switch is configured to selectively couple and decouple the DC power source to the diaphragm pump in response to each of the number of timing pulses thereby activating the DC power source to generate each of the number of electrical pulses. 11. The apparatus of claim 10, wherein the number of timing pulses contain information to vary at least one of the pulse characteristics based upon the characteristics of the diaphragm pump and the liquid flavoring so that the diaphragm pump fully completes both the intake stroke and the expulsion stroke of each discrete cycle, and wherein the switch is configured to selectively couple and decouple the DC power source to the diaphragm pump so as to generate the number of electrical pulses having the at least one of the pulse characteristics. 12. The apparatus of claim 1, further comprising a power controller coupled to the DC power source to regulate the application of power to the diaphragm pump. 13. A method of dispensing liquid flavoring for beverages, the method comprising: a) providing a diaphragm pump operable over discrete cycles, each discrete cycle comprising an intake stroke in which the liquid flavoring is drawn into the diaphragm pump from a liquid reservoir, and an expulsion stroke in which the liquid flavoring is expelled from the pump through a dispensing outlet, and wherein fully completing both the intake stroke and the expulsion stroke dispenses a predetermined volume of the liquid flavoring; b) generating a series of electrical pulses for applying power to the diaphragm pump, each of the electrical pulses operating the diaphragm pump over at least one of the intake stroke or the expulsion stroke, each of the electrical pulses having pulse characteristics that affect an application of power to the diaphragm pump, the pulse characteristics comprising a pulse duration and a pulse frequency; and c) varying at least one of the pulse characteristics based upon characteristics of the diaphragm pump and the liquid flavoring such that the diaphragm pump dispenses the predetermined volume of liquid flavoring over each discrete cycle. 14. The method of claim 13, wherein varying the at least one of the pulse characteristics based upon the characteristics of the diaphragm pump and the liquid flavoring operates the diaphragm pump to fully complete both the intake stroke and the expulsion stroke of each discrete cycle. 15. The method of claim 13, wherein the characteristics of the diaphragm pump include a time required to fully complete at least one of the intake stroke or the expulsion stroke of the diaphragm pump. 16. The method of claim 13, wherein the characteristics of the liquid flavoring include the viscosity of the liquid flavoring. 17. The method of claim 13, wherein each of the electrical pulses comprises a high portion for operating the diaphragm pump over the intake stroke, and wherein varying at least one of the pulse characteristics comprises varying the pulse duration of the high portion to exceed the time required to fully complete the intake stroke. 18. The method of claim 13, wherein each of the electrical pulses comprises a low portion for operating the diaphragm pump over the intake stroke, and wherein the varying at least one of the pulse characteristics comprises varying the pulse duration of the low portion to exceed the time required to fully compete the intake stroke. 19. The method of claim 13, wherein each of the electrical pulses comprises a high portion for operating the diaphragm pump over the expulsion stroke, and wherein varying at least one of the pulse characteristics comprises varying the pulse duration of the high portion to exceed the time required to fully complete the expulsion stroke. 20. The method of claim 13, wherein each of the electrical pulses comprises a low portion for operating the diaphragm pump over the expulsion stroke, and wherein varying at least one of the pulse characteristics comprises varying the pulse duration of the low portion to exceed the time required to fully complete the expulsion stroke. 21. The method of claim 13, further comprising: a) receiving a user request for a particular beverage; and b) determining a number of electrical pulses to be generated based upon at least the user request.
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