Apparatus and Method for an Improved Coffee Maker
A coffee making device has a body with a drip tray and a removeable water tank that supplies water to a heat system of the device. The water tank is internal to the device and removeable by a user. The body has a fluid refill opening that leads to the tank. The tank includes a overflow channel or conduit that dispenses into the drip tray.
1 .- 8 . (canceled)
9 . A coffee making apparatus for providing pressure feedback control of brew water output during a coffee production cycle, the apparatus comprising:
a pump for supplying water; the pump being in fluid flow connection with a water flow line;
a pressure sensor element that provides a pressure signal indicative of water pressure in the water flow line;
a processor module coupled to the pressure sensor element to receive the pressure signal as real-time pressure feedback for controlling power supplied the pump to thereby enable a predetermined water pressure to be substantially maintained in the water flow line;
the water flow line being in fluid communication with a boiler that supplies heated brew water to a filter basket adapted to hold coffee grounds;
wherein heated brew water supplied to the coffee grounds is substantially maintained at the predetermined water pressure.
10 . The apparatus according to claim 1 , wherein predetermined water pressure is a pressure profile, the processor module enabling brew water to be supplied according to the pressure profile during a production cycle.
11 . The apparatus according to claim 2 , wherein the pressure profile is the form of pressure-time profile used to control electrical power delivered to the pump.
12 . The apparatus according to claim 3 , wherein the pressure profile is preset.
13 . The apparatus according to claim 4 , wherein the pressure profile is user selected using a user interface.
14 . The apparatus according to claim 3 , wherein the pressure profile is user configurable.
15 . The apparatus according to claim 6 , wherein the pressure profile is user configurable using a user interface.
16 . The apparatus according to claim 2 , wherein the pressure profile is user selected using a user interface.
17 . The apparatus according to claim 2 , wherein the pressure profile is user configurable using a user interface.
18 . The apparatus according to claim 1 , wherein the processor module can enable brew water to be supplied according to a pressure profile during a pre-infusion cycle.
19 . The apparatus according to claim 10 , wherein the pressure profile during the pre-infusion cycle provides a controlled low pressure pre-infusion.
20 . The apparatus according to claim 11 , wherein the pressure profile during the pre-infusion cycle provides a controlled low pressure pre-infusion that enables the coffee grounds to be wet without forcing water through.
21 . The apparatus according to claim 11 , wherein water delivered in the pre-infusion stage is provided at a pressure of about three bar.
22 . The apparatus according to claim 11 , wherein water delivered in this pre-infusion stage is provided at a pressure from one to five bar.
23 . The apparatus according to claim 1 , wherein the processor module is coupled to a power modification module for controlling electrical power delivered to the pump; the processor module controls the power modification module to enable brew water to be supplied according to the predetermined water pressure.