A thermal conductive device of a drum roaster is provided. A hot airflow flows to airflow outlets through airflow inlets while a heating device works. A plurality fluxes of airflow heat is formed by the hot airflow flowing into a roasting space through a plurality of air-deflecting fins while a physical thermal conduction is generated between inner and outer drums due to thermal conductive metals of the air-deflecting fins. When the airflow heat is hotter than the physical thermal conduction, the airflow heat is used for compensation of temperature of the physical thermal conduction. On the other hand, the physical thermal conduction is used for compensation of temperature of the airflow heat when the physical thermal conduction is hotter than the airflow heat. Thereby constant temperature, energy saving, uniform temperature, and heat retention are achieved and coffee beans obtain thermal energy more stably during roasting process.

The invention relates to a roasting and grinding apparatus for coffee beans comprising a roasting device (50) and an associated grinding device (60); the roasting device (50) being configured for receiving coffee beans of a certain type that will be roasted, the roasting device (50) comprising reading means (53) to identify the characteristics of the coffee beans dispensed to it, the roasting device (50) further comprising a control unit configuring the roasting profile of the beans according to the characteristics retrieved from the reading means (53) and/or from the characteristics of the beans in a database (51) in this control unit and/or according to the user's input; the roasted coffee beans being dispensed into a beans container (10, 20), the beans container (10, 20) comprising programmable identification means where product parameters of the roasted coffee beans of a certain type are encoded on it by an encoder (52) in the roasting device; the grinding device (60) comprising one or more housings for receiving one or more beans containers (10, 20); the grinding device (60) comprising a reader (62) to obtain the information of the product parameters of the roasted coffee beans of the one or more beans containers (10, 20); the grinding device (60) further comprising a control unit configured to adapt the grinding size and the quantity of roasted coffee beans to be delivered from the coffee beans containers (10, 20) for obtaining a certain coffee quantity and/or a certain coffee blend quantity from each beans container to be grinded according to these product parameters and/or according to a recipes database (64), and/or according to the user's input. The invention further relates to a method for roasting and grinding coffee beans using a roasting and grinding apparatus as the ones described, and to the use of such a roasting and grinding apparatus.

The invention concerns a system for roasting coffee beans comprising: a roasting apparatus (1), said apparatus producing smoke, anda smoke treating unit (2) configured to collect and treat smoke produced by the roasting apparatus, wherein: the roasting apparatus comprises a smoke outlet (11), andthe 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).

The invention relates to an apparatus (1) and a method for more convenient roasting of coffee beans. The apparatus (1), which is provided for roasting coffee beans, comprises: a chamber (10) in which coffee beans can be received for roasting, wherein the chamber (10) comprises an opening (13), and a device for roasting the coffee beans received in the chamber (10). The chamber (10) is movable with respect to a movement axis into different positions, wherein these positions comprise a roasting position, preferably a bean reception position, and a bean discharge position, wherein in the roasting position the device is arranged to roast the coffee beans received in the chamber (10), in the bean reception position, if present, the chamber (10) is arranged to receive, via the opening (13), coffee beans for subsequent roasting in the roasting position, and in the bean discharge position the chamber (10) is arranged such that the coffee beans can be discharged via the opening (13) from the chamber (10).

A method of roasting coffee beans with a roasting device positioned in a room, and the roasting device includes a roasting device and a smoke treating unit configured to treat the smoke produced in the roasting device and to prevent the dispense of air contaminants in the room. The method includes introducing coffee beans in the roasting device and heating the coffee beans during a time, and a part of the whole quantity of smoke produced during the time of the step of heating is dispensed in the room without being treated by the smoke treating unit.

A system for heating an object includes an electromagnetic radiation source emitting electromagnetic radiation, a first stage, a second stage, and a third stage. The object is placed into the first stage where it is struck by electromagnetic radiation to thereby heat the object. The object is then transported to the second stage which has a cooling fluid flowing therein. The object moves through the second stage to cool down subsequent to being struck by the electromagnetic radiation. Air and any particulate matter produced by the electromagnetic radiation striking the object in the first stage is transported to the third stage. In the third stage, electromagnetic radiation is used to incinerate some of the particulate matter. The air in the third stage is vented out of the third stage through a filter.

A cooling arrangement for a roasted vegetable bulk material. The cooling arrangement includes a cooling chamber for cooling the roasted vegetable bulk material. The cooling chamber has a bulk material receiving surface and a sensor arrangement having at least one temperature sensor which monitors a temperature of the roasted vegetable bulk material.

The invention concerns an apparatus for roasting partially pre-roasted coffee beans comprising: a vessel (1) to contain coffee beans, an electrical heater (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 heater, 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, measure the concentration of at least one volatile organic component (VOC) in the smoke produced in the vessel during the time the roasting recipe is applied, detect an increase of the measured concentration in function of time, stop heating if no increase of the measured concentration happens after a set reference time t.sub.1.

A bean roasting system includes a roasting drum, an air handling system, a bean cooler, and an air exit subsystem. The air exit subsystem is configured to receive and treat a first fluid stream from the air handling system and a second fluid stream from the bean cooler. The air exit subsystem includes a heat sink and a filter. The heat sink defines two parallel fluid paths including a first fluid path and a second fluid path. The air exit subsystem includes a metal body configured to receive heat from the first fluid path and the second fluid path. The first fluid path is fluidically coupled to receive the first fluid stream from the air handling system. The second fluid path is fluidically coupled to receive the second fluid stream from the bean cooler. The filter is fluidically coupled to the first and second air flow paths.

A substance processing system includes a pressurizer configured to pressurize air and a processing chamber configured to process a substance. The system also includes a heat exchanger coupled between the pressurizer and the processing chamber. A nozzle is coupled to the processing chamber such that output from the nozzle comprises a substantially even pressure distribution.