A beverage maker may comprise a heating system, a temperature sensor operably coupled the heating system, and a controller. The controller may be configured to receive a series of measured temperature signals from the temperature sensor, calculate a change in temperature using the series of measured temperature signals, and calculate an efficiency of the heating system based on the change in temperature. The controller may further estimate a scale buildup based on the efficiency of the heating system, and store at least one of the estimated scale buildup or the efficiency of the heating system in a heating system performance database.

A beverage maker may comprise a heating system, a temperature sensor operably coupled the heating system, and a controller. The controller may be configured to receive a series of measured temperature signals from the temperature sensor, calculate a change in temperature using the series of measured temperature signals, and calculate an efficiency of the heating system based on the change in temperature. The controller may further estimate a scale buildup based on the efficiency of the heating system, and store at least one of the estimated scale buildup or the efficiency of the heating system in a heating system performance database.

This invention provides a coffee maker having: an upper structure with a filter (1) and a measurement chamber (2); the measurement chamber (2) has TDS sensor (8), a temperature sensor (9) and a fluid transfer system (7); a lower structure with a weight sensor (52); a plurality of connecting elements (4) enacting the upper structure above the lower structure; and carafe (6) to be placed between the upper structure and lower structure; and a display panel (51) showing data from the TDS sensor, temperature sensor, or weight sensor.

Control of temperature of water delivered by a dual-stage water heater having an external boiler with a first heater as first stage and an internal duct (water booster) with a second heater as second stage. A control loop based on a measured water temperature in the boiler and controls the first heater. A second loop calculate a reference booster water temperature based on the temperature error at the outlet (difference between a measured outlet water temperature and a reference outlet water temperature) and controls second heater based on error between reference booster water temperature and measured booster water temperature. The reference outlet water temperature depends on type of beverage (e.g. espresso, cappuccino) and includes a temperature profile with different temperature for different sub-beverages (e.g. coffee, milk). Takes into account physical response times, inertia of heater and anticipate sudden changes of reference water temperature at hot water outlet.

Control of temperature of water delivered by a dual-stage water heater having an external boiler with a first heater as first stage and an internal duct (water booster) with a second heater as second stage. A control loop based on a measured water temperature in the boiler and controls the first heater. A second loop calculate a reference booster water temperature based on the temperature error at the outlet (difference between a measured outlet water temperature and a reference outlet water temperature) and controls second heater based on error between reference booster water temperature and measured booster water temperature. The reference outlet water temperature depends on type of beverage (e.g. espresso, cappuccino) and includes a temperature profile with different temperature for different sub-beverages (e.g. coffee, milk). Takes into account physical response times, inertia of heater and anticipate sudden changes of reference water temperature at hot water outlet.

An automatic beverage maker having a water supply, a housing having a base, a body and a pod section, a sealed water tank within the housing body, a heating system for controlling the heating of water contained within the water tank, a first water line connecting the water supply to the water tank inlet, a second water e connecting the water outlet to the cavity of the housing pod section, a water pump for moving water from the water supply to the tank via the first water line and from the tank to the cavity of the housing pod section via the second water line. A drain line fluidly coupled to the sealed tank and having an open end for discharging water from the sealed water tank may also be used.

Water fed under pressure by a pump is heated using a heater to become hot water. The hot water flows through a main flow passage and is discharged into a dripper in which coffee ingredients have been set. A temperature control unit controls the heater based on a temperature detected by a temperature sensor that detects the temperature of the hot water, such that the temperature of the hot water reaches a target temperature set in advance by a coffee beverage manufacturing program. In an extracting step for extracting the coffee beverage, a target temperature TTb in a middle stage of the extraction and a target temperature TTc in a later stage of the extraction are lower than a target temperature TTa in an initial stage of the extraction.

Water fed under pressure by a pump is heated using a heater to become hot water. The hot water flows through a main flow passage and is discharged into a dripper in which coffee ingredients have been set. A temperature control unit controls the heater based on a temperature detected by a temperature sensor that detects the temperature of the hot water, such that the temperature of the hot water reaches a target temperature set in advance by a coffee beverage manufacturing program. In an extracting step for extracting the coffee beverage, a target temperature TTb in a middle stage of the extraction and a target temperature TTc in a later stage of the extraction are lower than a target temperature TTa in an initial stage of the extraction.

Provided is an imitated pour-over coffee maker capable of high-temperature control, including: a body having therein a water tank and a coffee-making tank; a human-machine interface module; a first coffee-making module; a second coffee-making module; a first control module; and a second control module for reading a signal of a third temperature sensor to control a second solenoid valve to perform coffee-making commencement or perform water-return commencement for returning water to the coffee-making tank. High-temperature control can be exercised over water dispensed by the delivery head, thereby optimizing the automation of imitated pour-over coffee making.

Provided is an imitated pour-over coffee maker capable of high-temperature control, including: a body having therein a water tank and a coffee-making tank; a human-machine interface module; a first coffee-making module; a second coffee-making module; a first control module; and a second control module for reading a signal of a third temperature sensor to control a second solenoid valve to perform coffee-making commencement or perform water-return commencement for returning water to the coffee-making tank. High-temperature control can be exercised over water dispensed by the delivery head, thereby optimizing the automation of imitated pour-over coffee making.