The invention concerns a method to roast coffee beans in a roasting system, said system comprising: a roasting apparatus (1), and a smoke treating unit (2) configured to treat the smoke produced by the roasting apparatus, said smoke treating unit comprising at least an electrostatic precipitator (222), said electrostatic precipitator comprising at least one cell, said cell comprising ionization wires, collecting electrodes and repelling electrodes and said ionization wires being supplied with an electrical power in order to apply a high voltage V to the ionization wires, wherein, during each roasting operation implemented in the roasting apparatus, the method comprises the steps of: monitoring the voltage V at the ionization wires and/or the electrodes along the time of the roasting operation, if the monitored voltage becomes inferior to a pre-determined voltage threshold V0 during a period of time of the roasting operation, and if said period of time, where the monitored voltage V is inferior to said lower voltage threshold V0 is superior to a pre-determined time threshold t, then displaying a cleaning alarm.

The invention concerns a method to roast coffee beans in a roasting system (10), said system comprising: a roasting apparatus (2), and a smoke treating unit (3) configured to treat the smoke produced by the roasting apparatus, said smoke treating unit comprising at least an electrostatic precipitator (222), wherein, during each roasting operation implemented in the roasting apparatus, the method comprises the steps of: monitoring the voltage at the ionization wires and/or to the voltage at the electrodes along the time of the roasting operation, comparing the monitored voltage to a pre-determined upper voltage threshold V1 and to one pre-determined lower voltage threshold V2, and if, during a period of time t of the roasting operation, the monitored voltage is inferior to said pre-determined upper voltage threshold V1 while being superior to said pre-determined lower voltage threshold V2, then displaying a cleaning status requirement.

Provided is a coffee roasting apparatus including a roasting portion formed in a tubular shape having a predetermined length along an advancing direction and formed to have an inner space having a set temperature to roast coffee beans; a conveying portion formed to pass through the roasting portion from the front to rear thereof and installed to be rotatable from the inside to outside of the roasting portion to repeatedly rotate along the same trajectory; and a supply portion installed at an upper side of the conveying portion at the front of the roasting portion to supply coffee beans so that one or more coffee beans continuously fall onto the conveying portion.

The invention concerns a method to check a roasting system (10), said system comprising: at least one roasting apparatus (2), at least one smoke treating unit (3), said smoke treating unit comprising at least one removable filtering device (221, 222, 223), a smoke driver (23) configured to drive smoke from the roasting apparatus (2) to said at least one filtering device, wherein the at least one smoke treating unit (3) comprises at least one downstream pressure sensor (24), wherein the method comprises the steps of: operating at least the smoke driver (23) to drive gas through the smoke filtering unit, measuring the pressure P at the pressure sensor downstream the removable filtering device, calculating the drop of pressure P=PPref compared to a pressure of reference P.sub.ref, comparing said drop of pressure P to a predetermined threshold P.sub.0 corresponding to the presence of said at least one removable filtering device upstream the pressure sensor, if said drop of pressure P is inferior to said predetermined threshold P.sub.0, then displaying an alarm.

Disclosed herein are system, method, and computer program product embodiments for illumination roasting. A lighting attribute may be determined based on an indication that a food product is within a chamber and a type of the food product. Based on an illumination of the food product according to the lighting attribute (e.g., a wavelength value, a lumens value, a wattage value, etc.), a change to the temperature profile of the food product may occur. The change in the temperature profile operates to roast the food product.

The invention concerns a method to check a roasting system (10), said system comprising: a roasting apparatus (2), said apparatus producing smoke, and a smoke treating unit (3) configured to treat the flow of smoke produced by the roasting apparatus and comprising: at least one smoke filtering device (221, 222, 223), a dismountable smoke collecting device (21) at least one temperature sensor (24) configured to measure the temperature T of the flow of smoke inside the smoke treating unit (3), a smoke driver (23) configured to drive smoke from the roasting apparatus (2) through said smoke treating unit, wherein the method comprises the steps of: operating the roasting apparatus in order to produce hot gas, monitoring the temperature of the smoke, and observing at least one behaviour of the monitored temperature along time, comparing said at least one observed behaviour of the monitored temperature with a predetermined behaviour of temperature corresponding to the presence of the dismountable smoke collecting device (21) inside the smoke treating unit, if the at least one observed behaviour diverges from the corresponding predetermined behaviour, then displaying an alarm.

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.

A method, system, and apparatus for roasting product such as chile comprises an inner roasting chamber, an exterior housing, housing the inner roasting chamber, a fixed engagement between the inner roasting chamber and the exterior housing on a burner end of the roaster system, an end cap fitting on a product exit end of the roaster system such that the inner roasting chamber can expand and contract within the exterior housing, a conveyor assembly comprising a conveyor belt, a motor configured to drive the conveyor belt, and a tensioning mechanism to adjust tension in the conveyor belt, and a gas distribution assembly connected to at least one burner.

A system for roasting particulate material, such as coffee or cacao beans, grains, malt. The system includes a concentrated solar collector configured for heating a fluid; a heat storage device configured for storing heat of the heated fluid; a particulate material roasting device comprising a treatment compartment configured for receiving the particulate material, and at least one generation unit configured for generating at least one gas and/or steam flow with a controlled temperature, through said treatment compartment. The at least one generation unit is configured for exchanging heat between said at least one gas and/or steam flow and a second flow. A circulation system is configured for generating the second flow by using heat stored in the storage device, and is configured for using directly the heated fluid.

A system for roasting particulate material, such as coffee or cacao beans, grains, malt. The system includes a concentrated solar collector configured for heating a fluid; a heat storage device configured for storing heat of the heated fluid; a particulate material roasting device comprising a treatment compartment configured for receiving the particulate material, and at least one generation unit configured for generating at least one gas and/or steam flow with a controlled temperature, through said treatment compartment. The at least one generation unit is configured for exchanging heat between said at least one gas and/or steam flow and a second flow. A circulation system is configured for generating the second flow by using heat stored in the storage device, and is configured for using directly the heated fluid.