The invention concerns an apparatus for roasting coffee beans comprising:—a vessel (1) to contain coffee beans,—an electrical heating device (13) to heat coffee beans contained in the vessel,—at least one temperature sensor (23) to measure temperature in the vessel, —a control system (180) operable to control the heating device, wherein the control system is configured to:—apply a roasting recipe dedicated to the roasting of partially pre-roasted beans comprising at least a temperature versus time profile by controlling the electrical heating device based on the measure of the temperature sensor,—detect a decrease of the consumption of electrical power of the heating device in function of time,—stop heating if no decrease of the consumption of electrical power happens after a set reference time ti.—continue or stop the electrical heating device depending on the type of identified beans.

A coffee roasting apparatus (100) is disclosed comprising a compartment (110) for holding coffee beans (10); a roasting element (140) for roasting the coffee beans in said compartment; and a controller (130) for controlling the roasting element, wherein the controller is adapted to control the roasting element as a function of the concentration of volatile organic compounds residing in the compartment. A coffee brewing apparatus including such a coffee roasting apparatus and a coffee roasting method are also disclosed.

The invention concerns a system for roasting coffee beans comprising: —a roasting apparatus (1), said apparatus producing smoke, and—a smoke treating unit (2) configured to collect and treat smoke produced by the roasting apparatus, wherein: —the roasting apparatus comprises a smoke outlet (11), and—the smoke treating unit comprises: a smoke inlet (21) configured to cooperate with the smoke outlet of the roasting apparatus, a smoke filtering sub-unit (22) comprising at least an active carbon filter (221), a smoke driver (23) configured to circulate smoke through the smoke treating unit from the smoke collecting device to an outlet (25) of the smoke treating unit, wherein the smoke treating unit (2) comprises an air inlet (24) configured to mix the smoke produced by the roasting apparatus (1) with ambient air before the smoke is circulated through the smoke filtering sub-unit (22).

A apparatus (100) for roasting coffee beans is disclosed comprising a compartment (110) for holding coffee beans (10); a roasting element (140) for roasting the coffee beans in said compartment; and a processor (130) comprising a control unit (134) for controlling the roasting element. Wherein, the processor (130) is adapted to determine a weight loss rate of the coffee beans, and the control unit (134) is adapted to control the roasting element as a function of the determined weight loss rate. A coffee machine including such an apparatus and a method for roasting coffee beans are also disclosed.

A coffee roasting apparatus (100) is disclosed that comprises a compartment (110) for holding coffee beans (10); a roasting element (140) for roasting the coffee beans in said compartment; a controller (130) for controlling the roasting element; and a sensor (120) for monitoring a total amount of VOCs (volatile organic compounds) released by said coffee beans during roasting and providing the controller with an indication of said monitored amount. The controller is adapted to receive an indication of the total weight of the coffee beans in the compartment and control the roasting element as a function of the indication of the monitored total amount and the indication of the total weight, said function defining the total VOC release characteristics of said coffee beans during roasting. A coffee brewing apparatus and coffee roasting method are also disclosed.

A device for use in a process for roasting coffee beans comprises measuring means (10) for performing measurements of an actual value of particulate matter emission from the coffee beans during a process of roasting the coffee beans, and controlling means (20) coupled to the measuring means (10) for receiving the outcome of the measurements from the measuring means (10), wherein the controlling means (20) are adapted to find a pattern of the particulate matter emission over time on the basis of the outcome of the measurements, to determine an actual roasting degree of the coffee beans on the basis of the pattern, and to determine and set at least one characteristic of the roasting process on the basis of the roasting degree.

The invention concerns an apparatus (10) for roasting coffee beans comprising:—a roasting chamber (1) presenting a bottom opening (11),—an air driver (2) configured to drive a flow of air inside the roasting chamber through the bottom opening of said chamber,—an electrical heater (3) positioned below the bottom opening of the chamber configured to heat said flow of air driven to the bottom opening of the roasting chamber, wherein the apparatus comprises a conduit (6) to drive the flow of hot air from the heater (3) to the bottom opening (11) of the roasting chamber, and wherein said conduit (6) comprises a local transversal constriction (61), and wherein at least one temperature probe is positioned at said local transversal constriction (61) of the conduit.

The invention concerns a method for roasting coffee beans with a roasting apparatus (10) said roasting apparatus being positioned in a room and said roasting apparatus comprising: ⋅—a roasting device (1), and ⋅—a smoke treating unit (3) configured to treat the smoke produced in the roasting device (1) and to prevent the dispense of air contaminants in the room.

Some implementations of the described methods relate to a process for frying coffee beans (and/or another food product) in a fry medium (such as cooking oil) and then centrifuging the coffee beans (and/or other food product) to remove a significant portion of the fry medium. Although the frying and centrifugation can occur in separate devices, in some cases, the described systems comprise a device that acts as both a fryer and a centrifuge. Indeed, in some cases, after the coffee beans (or other food product) has been fry roasted in a perforated container (e.g., a basket), the fry medium is drained from the container, and container is spun. In some cases, liquid nitrogen is also applied to the beans (or other food product), before and/or after being fry roasted. Other implementations are described.

The present invention relates to an apparatus (10) for roasting coffee beans comprising : —a housing (4), —a roasting chamber (1) presenting a bottom opening (11) and a top opening (12), —a smoke and particles collector (6) configured to collect smoke and particles from the top opening (12) of the roasting chamber, —the roasting chamber (1) being removably mounted to the housing (4), the bottom opening (11) of the roasting chamber cooperating with a hot air outlet hole (41) of the housing and the top opening (12) of the roasting chamber cooperating with the smoke and particles collector (6) when the roasting chamber is mounted to the housing, —a chamber locking assembly (5) for locking the roasting chamber to the housing in a removable manner, wherein said chamber locking assembly (5) comprises: a bottom device (51) for connecting the bottom opening (11) of the chamber to the hot air outlet hole (41) of the housing, said bottom device being configured to receive the bottom (1a) of the chamber and to hold the chamber, a top fastening device (52) for connecting the top opening (12) of the chamber to the smoke and particles collector (6).