Beverage brewing system and method of brewing beverage

1. A beverage brewing system, comprising:

a brewing chamber configured to hold a brewing fluid;

a basket for retaining brewing material within the brewing chamber, the basket including a porous bottom and a closed top; and

a vacuum source and a vent valve each coupled to the brewing chamber, the vacuum source and the vent valve being configured to change pressure in the brewing chamber upon their respective actuation,

wherein, upon actuation of the vacuum source or the vent valve, a resulting corresponding decrease or increase in pressure in the brewing chamber causes brewing fluid in the brewing chamber to move out of or into the basket respectively through the porous bottom of the basket.

2. The system of claim 1 , wherein the chamber has a first opening and a second opening, the first opening being coupled to the vacuum source and to the vent valve, and the second opening being coupled to a drain valve.

3. The system of claim 1 , further comprising a processor configured to control the vacuum source and the vent valve according to a predetermined sequence.

4. The system of claim 3 , wherein the processor is configured to control the vacuum source and the vent valve according to the following sequence:

(a) closing the vent valve and starting the vacuum source, such that air is pumped out from the brewing chamber from the first opening, creating a partial vacuum in the basket;

(b) stopping the vacuum source and opening the vent valve, such that air enters into the brewing chamber, causing brewing fluid in the brewing chamber to move through the porous bottom into the basket from the outside of the basket;

(c) closing the vent valve and starting the vacuum source, such that brewing fluid in the basket is forced to move through the porous bottom out of the basket;

(d) stopping the vacuum source and opening the vent valve, such that air enters into the brewing chamber, causing the brewing fluid in the brewing chamber to move through the porous bottom into the basket from the outside of the basket; and

(e) repeating (c) and (d) for a plurality of numbers of cycles.

5. The system of claim 4 , wherein the processor is further configured to control the drain valve, and wherein the processor is configured to keep the drain valve closed during (a)-(e); and upon the completion of (e), the processor is configured to open the drain valve to drain the brewing chamber.

6. The system of claim 5 , wherein upon draining the brewing chamber, the processor is further configured to close the drain valve and to repeat (c) and (d) for a plurality of cycles, and to open the drain valve to further drain the brewing chamber.

7. The system of claim 2 , wherein the first opening is coupled to the vacuum source and the vent valve via one or more pipe.

8. The system of claim 1 , further comprising a drain valve coupled to the brewing chamber,

wherein the vacuum source and the vent valve are configured to be actuated consecutively.

9. The system of claim 8 , further comprising a container coupled to the drain valve.

10. The system of claim 1 , wherein the basket includes a screen configured to keep brewing materials retained therein submerged in the brewing fluid.

11. The system of claim 2 , wherein the first opening is disposed at a top of the brewing chamber, and the second opening is disposed at a bottom of the brewing chamber.

12. A method of brewing beverage, comprising:

partially filling a brewing chamber with brewing fluid, the brewing chamber being coupled to a vacuum source, and to a vent valve, wherein the vacuum source and the vent valve are configured to change pressure in the brewing chamber upon their respective actuation;

putting brewing materials in a basket within the brewing chamber, the basket including a porous bottom and a closed top; and

actuating each of the vacuum source and the vent valve consecutively to change pressure in the brewing chamber, wherein, upon respective actuation of the vacuum source or the vent valve, a corresponding resulting decrease or increase pressure in the brewing chamber causes brewing fluid in the brewing chamber to move out of or into the basket respectively through the porous bottom of the basket.

13. The method of claim 12 , wherein the brewing chamber has a first opening and a second opening, the first opening being coupled to the vacuum source and to the vent valve, and the second opening being coupled to a drain valve.

14. The method of claim 13 , further comprising controlling the vacuum source and the vent valve according to a predetermined sequence.

15. The method of claim 14 , wherein the controlling comprises:

(a) closing the vent valve and starting the vacuum source, such that air is pumped out from the brewing chamber from the first opening, creating a partial vacuum in the basket;

(b) stopping the vacuum source and opening the vent valve, such that air enters into the brewing chamber, causing brewing fluid in the brewing chamber to move through the porous bottom into the basket from the outside of the basket;

(c) closing the vent valve and starting the vacuum source, such that brewing fluid in the basket is forced out into the brewing chamber through the porous bottom out of the basket;

(d) stopping the vacuum source and opening the vent valve, such that air enters into the brewing chamber, causing the brewing fluid in the brewing chamber to move through the porous bottom into the basket from the outside of the basket; and

(e) repeating (c) and (d) for a plurality of numbers of cycles.

16. The method of claim 15 , further comprising:

keeping the drain valve closed during (a)-(e); and

upon the completion of (e), opening the drain valve to drain the brewing chamber.

17. The method of claim 16 , further comprising:

upon draining the brewing chamber, closing the drain valve and to repeat (c) and (d) for a plurality of numbers of cycles; and

opening the drain valve to further drain the brewing chamber.

18. The method of claim 13 , wherein the first opening is disposed at a top of the brewing chamber, and the second opening is disposed at a bottom of the brewing chamber.

19. The method of claim 11 , wherein the basket includes a porous screen; and

wherein actuating each the vacuum source and the vent valve includes actuating the vacuum source and the vent valve, such that:

when the pressure in the brewing chamber is reduced, the brewing fluid in the brewing chamber moves through the porous screen from the basket out of the basket; and

when the pressure in the brewing chamber is increased, the brewing fluid in the brewing chamber moves through the porous screen into the basket from the outside of the basket.