MX2010004662A - Industrial electric coffee roaster for individual bean roasting, comprising a hot air turbine. - Google Patents

Abstract

The invention relates to a system for the individual roasting of coffee beans, using a roasting process comprising the mixing of pressurised air and heat from a spiral electric resistor at the upper outlet of the Venturi tube together with individual coffee beans in the lower part of a conical feed hopper during a flotation roasting process. The system includes a sub-system for recycling the hot air for roasting, allowing the air to be cleaned with solids and the heat energy to be recycled, producing zero white smoke, black smoke or soot emissions and minimal NOx, SOx or CO2 gaseous components, with a satisfactory level of electrical energy efficiency provided by the overall configuration of the heating and thermal components and the heat energy recycling system together with the synchronisation of the electrical roasting/cooling temperature, time and airflow devices used in the roasting process.

Description

INDUSTRIAL TOASTER OF COFFEE, GRAIN GRAIN, ELECTRIC WITH HOT AIR TURBINE BACKGROUND OF THE INVENTION Coffee being a natural, universal and widely consumed beverage with great beneficial attributes for health and with an ancient history, which goes back to the past together with its artisan processes of roasting in rustic frying pans with charcoal and sieving stone, I have developed in that sense a technological contribution, from which its patent is requested, to improve the roasting process and expand its consumption even more by taking care of design details in energy efficiency and its sanitary viability.

Currently the coffee roasting process is carried out by various processes that basically include barrel roasters with gears, motor reducers and gas use, non-barrel turbine toasters with gas hot air or the various electric roasters without hot air fully mechanical with rotating barrels and a large number of resistors with a high electrical consumption of watts or high amperages, there are also mostly manual toasters and others of great automation, these are used for 250 grams test or in the chewing of roast in productions of 500 kilograms in relatively short times, the vast majority of current roasters require the mandatory use of fossil fuels and sophisticated mechanical systems that rotate the rotating drums that house coffee beans inside but show high costs in energy consumption. gas and electric power In order to improve these processes and basically eliminate the use of fuels that emit directly to the furnace emanations of combustion, Ox, SOx and C02 gases of which there is reference of the damage and collateral effects towards human health, the atmosphere and life, the present invention has been designed of which the request for protection is reiterated.

DESCRIPTION OF THE INVENTION It is indicated as a new industrial invention a coffee roaster of raw or green beans, type domestic appliance with a capacity of 1 kg every 20 minutes, which operates entirely with electric power at 110 or 220 volts, which avoids the use of Ip gas or any other fossil fuel that directly emit fumes or fumes of NOx, SOx or C02 gases.

This system is characterized by the combined application of simple aerodynamic systems that convert this invention to a high efficiency in the use of electric current and heat energy and with zero emission of white, black or black smoke.

In the present description two figures are included which are cited: Figure 1 which refers to a frontal description of the exterior and some elements of the interior of the coffee roaster of this invention that describe from the bottom up: At the back and top of this hopper there is a ventilation opening that 75 exclusively allows the return of hot air in a recycling process through an aluminum duct (16), outside the system, by re-entering it to the blower turbine (3), inside this cooking chamber of the feeder hopper (23) It has a grid, along with the aforementioned ventilation, which does not allow the passage of roasted beans and in turn has an aluminum thermal pipe (16) that leads this hot air to the turbine which is 80 removable because inside it contains grids and externally a mini cyclone (17) that clean the processed coffee grain from all kinds of solid impurities or scale.

It is indicated that this whole system, by not using Ip gas or any other derivative for combustion, allows a smoke-free or other burnt byproduct, harmful to food consumption and in turn allows uniform toasting that naturally retains all the high properties of 85 quality in roasting, color and flavor.

The invention herein refers to the roasting of raw or green coffee beans, with a 100% electric industrial technology not currently used, this process allows the roasting of coffee with adequate temperatures and perfectly controlled times in a convection chamber and stainless steel cooking (23) without the use of fuels that contaminate the 90 internal environment of the cooking chamber with the release of harmful gases or free radicals product of combustion, in the same way the total control of the temperature of roasting and cooking time allow to preserve all the organoleptic and antioxidant qualities of coffee.

The objective of this new grain-to-grain coffee roaster with a capacity of 1 kg every 20 min is to offer improvements in the energy consumption of both electric current and time and human control of roasting, showing considerable efficiency by integrating: A) An anti-smoke hot air recycling system (16) B) A glass dome that allows the entry of raw material (15) and natural lighting together with the direct observation of roasting.

C) Semiautomatic temperature controls (thermostat (18) of 300 degrees Celsius 100 connected to the general ignition (22) and resistance (5), semiautomatic time control (20) (electric cut-off clock up to 1 h connected to the general ignition (22) and to the resistor (5)), and a variable resistor (21) connected to the turbine motor (3) (which controls the air flow for the flotation and cooling of the process) All these elements allow the semiautomatization and control of the industrial process of roasting high quality coffees in this particular case. Its simplicity in use and efficiency is reflected in energy costs, which allow it to be used by independent households or microindustries that require fresh self-production of roasted coffee beans at the time.

This figure number 2 outlines a side view with the constructive aspects of the interior and 110 outside of the toaster with the air circulation and the cooking process and in reference to this we have in the order inferior to superior the following ordered elements: 1) An ultralight and independent electric motor that cools the entire internal system of the blower and resistance motor area 2) A high-speed compact electric motor is indicated at the base of the system 115 3) A steel blower turbine contained in a circular casing. 4) A venturi tube with lower inlet towards the housing and with a reduction in its upper part that pressurize the air 5) A spiral resistance inside and to the center of the venturi tube 6) Thermal coating for the heating core 120 7) External body of the heating core 8) Main double housing with thermal coating 9) Front panel for electrical controls 10 A removable conical hopper with multi-perforating grid at the center with roast coffee outlet 11 A fixed upper conical hopper making the cooking and cooling chamber 125 12 An insulating and thermal glass coating 13 An external stainless steel container that houses the lower hopper with grid, the insulated material and the conical fixed hopper of the cooking chamber 14 A flange with cooking grain diffuser 15 Thermal glass dome or cover for input of raw material 130 16 Aluminum heat exchanger duct 17 Glass cyclone filter with additional external air inlets and scale collector grid 18 Electric thermostat with led up to 300 degrees centigrade 19 Physical thermometer up to 300 degrees centigrade 20 Time control with electric system shutdown 135 21 Air flow control with variable resistance and ignition led 22 General lighting 23 Convection or cooking chamber 24 Heating core 25 Roast coffee discharge

Claims (4)

CLAIMS Once described with extension this equipment in invention, which I allow myself to claim as my exclusive property and that is mainly characterized by the following:

1. - Industrial coffee roaster, grain by grain, semiautomatic, electric at 110 or 220 volts without mechanical systems, characterized by operating through a heat core (24) containing an aerodynamic system that is integrated into a venturi system tube (4) with a spiral resistance in its interior (5) housed in the center of the flotation and which generates a flow of hot air of high temperature concentrated in the upper outlet of pressurization of the venturi tube (4) and in the base of the flange with central tubular diffuser (14) of the convection chamber, cooking (23), at this point the maximum calorific power of pressurized air is obtained in which the coffee seeds are received and combined grain by grain, with the hot air and performs the roasting process in a concatenated and rhythmic manner.

2. - Industrial coffee roaster, grain by grain, semiautomatic, electric at 110 or 220 volts without mechanical systems, characterized by operating by a hot air recycling system that connects the convection chamber, cooking (23) and the steel blower turbine (3) in a return cycle of hot air by the heater core (24) to the flange with diffuser (14) entering this hot air again into the convection, cooking chamber (23).

3. - Industrial toaster of coffee, grain by grain, semiautomatic, electric at 110 or 220 volts without mechanical systems, and which in reference to claim 1, is included in its lower part an air pressurization system characterized by operating by a blow turbine (3) inside a circular metal steel casing that is silent and driven by a compact 8,000 rpm (2) high-speed silent motor and whose air flow is controlled by a variable voltage resistor (21), is added the mention that this blower system is not commercially configured in the market.

4. - Industrial roaster of coffee, grain by grain, semiautomatic, electric at 110 or 220 volts without mechanical systems that in accordance with claim 1, has in the upper part of heat core (24), the integration of a convection chamber, cooking (23) characterized by operating with the pressurized air as mentioned in claim 3 and with the heat core (24) carrying in operation the total cooking and roasting process inside the convection, cooking and roasting chamber ( 23) it is added that this chamber (23) is of particular design and special for this purpose, which integrates a removable feeder hopper with grid (10) and stainless steel coffee outlet, a fixed feed hopper (11) and circulation stainless steel coated with glass insulating material (6) and contained in a stainless steel container (13) and to itself this process It can be seen from the highest part through a hemispherical thermal glass cover (15). Industrial roaster of coffee, grain by grain, semiautomatic, electric at 110 or 220 volts without mechanical systems and in accordance with the reinvindication 2 is included system of cleaning and recycling of hot air (16) for roasting that is characterized by the integration of a mini-ball glass with grid to prevent the passage of solid materials to the air system coming from the convection chamber, cooking (23)