DE8406132U1 - ROASTING MACHINE FOR ROASTING COFFEE BEANS - Google Patents

Description

(Ill · ····

, ELMAR OTT

European patent attorney

D-7240 Herb 1

Hermann Geiger, Frittling «n

161/01

February 27, 1984

ftöstmasenine for resting coffee beans

The invention shall look check on a roaster tm van roasting coffee beans and deegleiehen that formed iat as Haushaltsmasenine.

Coffee beans are usually sown in industrial brewing systems »BIe roasted coffee beans then ropes used up as soon as possible

IB, since a longer storage period has a negative effect on the coffee booths' Äföfflastöffe, Xin any case, the industrial roasting process has the "aöhteil" that due to the distribution channel alone there is a significant period of time 2wis @ hen dea Rö§tv © rgatng and the VetbcauGh, In addition, an eatspreetienae SSstaag can not be given to the respective consumer in the case of industrial rusting in large sizes.

The invention is based on the object of providing a grate *

«Ill. < t J t

• iii ta ···

• iii ι ·· ♦ ■

t I I · ·

III! Il It ··

- 2 '"

to create roaächine, mil ', the dee consumes himself Can roast coffee beans or the like.

What solution to this problem is bdi united? Roasting machine & of the type mentioned at the outset by the features specified in claim 1. The hot air flow generated by the hot air blower is blown from above onto the top layer of the roasted ^{goods at a temperature between 2ΟΟ Θ C and 460 ° C.} Ale Röatgut does not only contain coffee beans, but also other roastable products. A stirring device is provided in the interior of the roasting pot, which ensures that all of the roasted material is circulated in such a way that even roasting can take place. The stirring device can essentially be a stirring rod which is bent in such a way that there is a constant exchange between the lower and upper files of the roasted material.

The stirring rod can be inserted into a drive shaft which protrudes through a suitable bore on the underside of the roasting pot. The connection between the drive shaft and the stirring rod can be designed as a simple plug-in connection in which the stirring rod can be locked.
25th

The stirring rod can also be rotated in the bottom of the The roasting pot and its end can be rubbed off be led out of the roasting pot at the bottom.

If you want to obtain the simplest possible structure for the roasting machine, the R & sttopf can be fixed be trained. The filling opening of this roasting pot is preferably with a grid or with a sieve » like lid covered by the »the excess

Hot air flows outside as exhaust air. The for this

suffered | < <· »· ·

f lit 4 «· · ·« · 4 ·

The necessary openings in the Deekel must be small enough to prevent the roasted food from being blown out. The hot air required for roasting flows into the roasting pot preferably in a glass of windy air, for example coffee beans are swirled around in the roasting pot.

In order to be able to achieve quick and even roasting, it is advantageous if the base area of the roasting pot is chosen to be relatively large in terms of height. Tests have shown that at Use of a round roasting pot whose diameter is twice as large as the maximum filling * level of the evil should be. Hit one of these Roasting pots, for example, 300 grams of coffee beans can be roasted within a few minutes.

After the roasting time has ended, it is advantageous if the roasted coffee beans are placed in a stream of cold air be cooled down as quickly as possible «In this way, unwanted roasting can be avoided. This hot air blower can run on for this purpose be provided, however, the Be = provision of the bite air provided heating device is switched off.

Advantageous developments of the invention are in the subordinate claims. 30th

The invention is naefefölfenä aftbaüd der Zeiehaoag explained in more detail.

The roasting machine shown consists essentially of a roasting pot 1, einsro housing 2 _T in the one

I * · f «f <> t I · t Vt ·

Hot air blower 3 and a drive device 4 for a stirring rod 5 located in the grate pot 1 are arranged is.

The side wall 6 and the bottom 7 of the roasting pot 1 can be provided with thermal insulation. the In the exemplary embodiment shown, the filling opening 8 is covered by a sieve-like cover 9.

In addition, the roasting pot 1 has 10 in the upper area

a recess 10 into which the part of the housing 2 protrudes, at which the air outlet opening 11 of the hot air blower 3 is located.

The incoming hot air 12 has a temperature ο

by around 300 C, which roasts the coffee beans that come into contact with it *

This ensures that the entire product is roasted evenly 13 can take place, the stirring rod 5 is driven by the drive device 4 in the indicated arrow direction turned. This will transport the lower coffee beans upwards and vice versa. The maximal Filling level 14 is shown here as a broken line. Is the ratio between maximum FUIl-26

height 14 and the diameter of the roasting pot 1 smaller than 1/2, a uniform circulation of the entire filling material 13 is already possible with a simple Rühe stick 5 possible. Of course, a double stirring rod or a screw-shaped stirrer can also be used Stirring device can be used.

The flowing from the hot air blower 3 into the interior IS Hot air 12 can flow to the outside as exhaust air 16 through openings 17 provided in cover 9. In order to the coffee beans or the like whirled up in the process,

• I tf · «» t Il ·

■ • ft. lit «ft

«II ·> · <III« ··

• III Il ■ ■ Mil ·· ·

are not thrown out of the roasting pot, the openings 17 must have a correspondingly small diameter.

The connection between the drive device 4 and the stirring rod 5 is shown here in a simplified manner because it This can be a known plug connection, such as that used in kitchen machines for stir bars is common.

In the hot air blower 3, the intake air is drawn in to the desired level in an electrical heating device 18 Temperature heated. With an output of 1400 watts, hot air temperatures of up to to 500 ° C, whereby the amount of air can be approx. 400 l / min. Such heating devices are already used today in hot air devices that are used, for example, for soldering copper pipes will.

The roasting machine shown also has a timer 19 and an adjustable thermostat 20. The desired roasting time can be set individually with the timer 19, the roasting machine can be designed in such a way that after the set roasting time has elapsed, the heating device 18 is switched off, but the hot air blower 3 continues to run for a certain time. At the thermostat 20 can the desired temperature of the hot air 12 can be set. The thermostat 20 can for this purpose with be connected to a temperature sensor, not shown here, in the area of the air outlet opening 11 is arranged.

In the illustrated embodiment, for

• II Ii ι,
• II ti «

i · f «ι iii»

I I I I I f I Ii ι

(ι Ι ι ι ι r

• ♦ ι ti * ι

• t t »· I · · t

• f · · · I · t · ft ·· · I »» t ♦

• III Il. · »I ·

/ IO

ι roasting a hot air blower 3 used. To this end However, other heating devices can also be used. For example, in the upper area of the roasting pot a heating rod can be arranged, which essentially through the roasting material located underneath Thermal radiation roasts. However, a heating device could also be provided in the area of the bottom of the roasting pot be.

These two embodiments in which the heating device is arranged in the roasting pot, can have an agitator to circulate the roasted material, like it is shown in the drawing.

Claims (8)

"~ 7 - Hermann Geiger, Frittlingen 161/01 February 27, 1984 claims for protection 1. Roasting machine for roasting coffee beans or the like f which is designed as a household machine, characterized in that the roasting machine has a hot air blower (3), its air outlet opening (11) above the maximum Filling level (14) protrudes into a removable roasting pot (1), in the interior (15) of which a Stirring device for circulating the roasted material (13) is arranged. 2. Roasting machine according to claim 1, characterized characterized in that at least one stirring rod (5) is arranged in the roasting pot (1), the is positively connected to a motor-driven drive shaft. 3. roasting machine according to claim 2, characterized ♦ · -ΟΙ marked that the stirring rod (5) is passed with its driven end through the bottom (7) of the roasting pot (1). δ 4. roasting machine according to claim 2, characterized characterized / that the drive shaft protrudes from below into the roasting pot (1). 5. Roasting machine according to one of the preceding claims, characterized in that the roasting pot (1) is fixed or? \ ch against the direction of rotation of the agitator turns. 6. Roasting machine according to one of the preceding claims, characterized in that that the filling opening (8) of the roasting pot (1) with a grid or a sieve-like lid (9) is covered. 7. Roasting machine according to one of the preceding claims, characterized in that that the ratio between the maximum filling level (14J in a round roasting pot (1) and whose diameter is smaller than 2/3, preferably smaller than 1/2. 8. Roasting machine according to one of the preceding claims, characterized in that an adjustable thermostat (20) for Setting of the hot air temperature and a timer (19) for setting the set-up time are provided are. 9, roasting machine for setting up coffee beans or the like / which is trained as a household machine, »II ··· lit d id y te Ii marked «that the arming machine has a grate pot (1) _f in the interior space (IS) a heating device for arming and a resting device for circulating the food (13) arranged» Ind.