Note: Descriptions are shown in the official language in which they were submitted.
CA 02350390 2006-03-30
Device For Making Mocha Coffee
The invention relates to a device for the preparation of mocha coffee, with a
cooking utensil and electrical heating body disposed electrically insulated
from the
cooking utensil, but thermally coupled or being capable of coupling to the
cooking
utensil, respectively, and a temperature sensor.
Mocha coffee is prepared in a cooking container by heating with water, wherein
mocha coffee "flour" (grounds) is added to the water. An electrically-operated
mocha
coffee machine is known from the flyer of Elektronik Sanayi S.A. for the
preparation of
Turkish mocha coffee, wherein the electrically-operated mocha coffee machine
prepares
Turkish mocha coffee out of water, mocha coffee flour and sugar. The known
mocha
coffee machine is associated with the disadvantage that the cooking container
for the
Turkish mocha coffee is subject to line voltage, and its operation is
associated with a
substantial danger to life and limb because of electrical shock.
It is an object of the present invention to further develop a device of the
initially-
recited kind such that the device enables operationally safe and substantially
automatic
preparation of a foaming mocha coffee.
The present invention exhibits relative to what is known the advantages that
an
operationally safe device for the preparation of mocha coffee is available
under compact
construction, wherein the operationally safe device does not require any
attention until
the finishing of the mocha coffee, because the operationally safe device
prepares the
mocha coffee substantially automatically.
In accordance with this invention a device for preparing mocha coffee
comprises:
a cooking vessel; an electrical heating body electrically-insulated relative
to the cooking
vessel and thermally coupled to the cooking vessel; a temperature sensor
disposed in the
cooking vessel; and a lifting device serving for lifting the cooking vessel
for the purpose
of mocha coffee preparation and for lowering it for emptying of the cooking
vessel.
In an alternative embodiment a device for preparing mocha coffee comprises: a
cooking vessel; an electrical heating body electrically insulated relative to
the cooking
vessel and thermally coupled to the cooking vessel; a temperature sensor
disposed in the
cooking vessel, the cooking vessel standing in the device at the, bottom above
the heating
body; and a lifting device supporting a stirrer rod with a stirrer blade, a
drive motor for
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CA 02350390 2004-07-23
the stirrer rod, and the temperature sensor and for lowering them downwardly
into the
cooking vessel and supporting them again upwardly movable in return.
More specifically, the invention provides a device for preparing mocha coffee
comprising a cooking vessel, an electrical heating body disposed below the
cooking
vessel and electrically insulated from and supported relative to the cooking
vessel, the
electrical heating body being thermally-coupled to the cooking vessel, a
temperature
sensor disposed in the cooking vessel, and a motor. A stirrer rod is connected
to the
motor, is driven by the motor, and protrudes into the cooking vessel. The
cooking vessel
is supported in a casing, swivelable around a swivel axis in the casing, and a
blade on the
stirrer rod is disposed immediately above the heating body and is effective
for stirring of
the mocha.
In another embodiment a device for preparing mocha coffee comprises a cooking
vessel, an electrical heating body disposed below the cooking vessel and
electrically
insulated from and supported relative to the cooking vessel, a temperature
sensor
disposed in the cooking vessel, and a motor. The electrical heating body is
thermally
coupled to the cooking vessel. A stirrer rod is connected to and driven by the
motor and
protrudes into the cooking vessel, and a blade on the stirrer rod is disposed
immediately
above the heating body and is effective for stirring of the mocha. A pouring
spout is
provided on the cooking vessel; the pouring spout forming an essentially
rectangular
angle with a swivel axis of the cooking vessel.
Advantageous particular embodiments of the invention are described in the
following, with reference to the accompanying drawings in which:
Figure 1 is a sectional view through a first embodiment of the invention;
Figure 2 is a front elevation view of a second embodiment of the invention,
wherein side
covering pieces and upper covering pieces have been removed;
Figure 3 is a perspective view from the right top of the embodiment of the
invention
according to Figure. 2;
Figure 4 is a perspective view from the top of the embodiment of the invention
according
to Figure 2;
Figure 5 is a side elevation view from the left of the embodiment of the
invention
according to Figure 2;
Figure 6 is a side elevation view from the right-hand side of the embodiment
of the
invention according to Figure 2;
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CA 02350390 2004-07-23
Figure 7 is a perspective view of a water pump;
Figure 8 is a perspective partial view of a lower cover plate with terminal
switches and a
servomotor;
Figure 9 is a perspective view of a swivel device for the water tank;
Figure 10 is a perspective view of a cup blockage.
A first embodiment (Figure 1) of the invention relates to a device 1, wherein
the
device 1 comprises essentially a cooking container 2 for boiling water or,
respectively,
mocha coffee, with an electrical heating body 5 disposed electrically-
insulated relative to
the cooking container 2 but thermally coupled to the cooking container 2, and
a
temperature sensor 11 protruding into the cooking container. Also, a stirrer
rod 3 with an
agitating blade 4 protrudes into the cooking container 2, wherein the
agitating blade 4
rotates immediately above the heating body 5 in the cooking container 2, when
the stirrer
rod is switched on. The production of foam is favored by disposition of the
agitating
blade 4 very close above the heating body 5. A drive motor 17 serves as a
driver of the
stirring rod 3.
Furthermore, a feed tube 8 ends on the top of the cooking container 2 for the
water, wherein the mocha coffee is generated from the water together with the
mocha
coffee "flour" and the sugar, which also are entered into the cooking
container 2, under
application of heat.
The filling tube 8 for the water, ending at the cooking container 2, is
solidly
connected to the cooking container 2 according to this embodiment of the
invention.
A control unit 10 receiving electrical current from an electrical power grid
12
leads electrical current to the electrical heating body 5 through lines 13, 14
for such a
time until the mocha coffee is ready. The control unit 10 switches on and off
the drive
motor 17 for the stirrer rod 3, which occurs through electrical conduit lines
18, 19.
The cooking container 2 with a cover 16 and the feed tube 8 for the water is
swivelably supported at the casing 15 of the device 1. A swivel drive 9
receiving current
from the control unit 10 through conduit lines 20,21 and controlled by the
control unit 10,
serves for swivel in the cooking container 2, such that the finished prepared
mocha coffee
can be poured through a pour spout 6 of the cooking container 2 out of the
cooking
container 2 into another vessel, for example, a cup.
The pouring spout 6 forms an essentially rectangular angle with the swivel
axis 7
of the cooking container 2.
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CA 02350390 2004-07-23
According to another embodiment (not illustrated in the drawings) of the
invention, the cooking container 2 and the heating body 5 are formed as
separate parts.
According to a similar, further embodiment (not illustrated in the drawings)
of the
invention, the cooking container 2 is insertable and again removable into the
covering 16
exhibiting the heating body 5.
According to a similar, other embodiment (not illustrated in the drawings) of
the
invention, the cooking container 2, after removal of the heating body 5, is
downwardly
movable in the device 1 and is swivelably supported for pouring.
According to a similar, further embodiment (not illustrated in the drawings)
of the
invention, the cooking container 2, after removal of the heating body 5, is
supported
removably in downward direction from the device 1. This facilitates cleaning
of the
cooking container 2.
According to a differently constructed embodiment of the invention (Figures
2,3,4), wherein side and top covering parts have been removed for clarity of
the
illustration) a device 201 comprises a frame-shaped stand formed of left side
parts 222
and of a right side parts 223; wherein the side parts in each case transition
into
outwardly-directed foot parts 224, 225, wherein the side parts are maintained
at a
distance on the top by way of a lower cover sheet metal piece 226 and by an
upper cover
sheet metal piece 227, and wherein the side parts are connected to each other
in this way.
The two side parts 222,223 are connected to each other at the bottom under a
distance by
a floor plate 228. Space for a positioned perforated plate 229 is present
between the two
side parts 222,223, and in fact between their foot parts 224,225; the
perforated plate 229
serving for receiving a drinking vessel 230, for example, a cup.
A cooking container 202 for preparing of a mocha coffee is disposed behind the
positioned perforated plate 229 for receiving of a drinking vesse1230. The
cooking
container 202 stands on lifting device 239; the construction and the
functioning of the
lifting device 239 being explained further on. The lifting device 239
comprises also a
heating body 340 (Figure 2) for the preparation of the mocha coffee.
A support plate 237 is attached at a distance at the right side part 223
(Figures
2,3,6), wherein a control unit 210 is seated on the support plate 237. The
control unit 210
controls with a program the process courses in the device 201 during the
preparation of
mocha coffee.
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CA 02350390 2004-07-23
An angle sheet metal piece 236 (Figures 2,3,6) is seated on the foot part 225
of
the right side part 223 of the device 201, wherein the angle sheet metal piece
236 carries
a water pump 235 (Figure 7). Water hoses (not illustrated in the drawings) are
connected
to the water pump 235, whereby program controlled water from the water tank
233 is
transported into the cooking container 202. The water pump 235 is switched on
and off
by the control unit 210.
The upper cover sheet metal piece 227 comprises a receiver 231 for coffee
flour
or alternatively, mocha flour, as well as a further receiver 232 for sugar.
The upper cover
sheet metal piece 227 has an upper opening 228 (Figures 3,4), wherein a
corresponding
opening (not illustrated in the drawings) is furnished under the upper opening
238 in the
lower cover sheet metal piece 226, wherein the opening is aligned with the
upper opening
238.
Rotatably supported stirring rod 203 (Figure 2) extends downwardly from the
lower cover sheet metal piece 226, wherein an agitating plate 204 is furnished
at the
lower end of the stirrer rod 203. The temperature sensor 211 (Figures 2,3) is
directed
downwardly from the lower cover sheet metal piece 226.
A drive motor 256 for driving the stirring rod 203 is seated on the lower
covering
sheet metal piece 226, and the stirring rod 203 is switched on and off
depending on a
program by a control unit 210.
A support plate 234 is applied at the upper cover sheet metal piece 227 and
forms
with the upper cover sheet metal piece 227 a single piece part, whereby the
support plate
234 supports a water tank 233.
A first bar 251 is provided on the top front at a side part 222; a second bar
252 is
attached at the top front at the other side part 223. A support plate 253 is
mounted at the
two bars 251, 252, wherein the support plate 253 in turn carries the terminal
switch 254,
255.
The lifting device 239 (Figures 2,3,4,5,6,9) comprises a base plate 240,
wherein
in each case a support part 241, 242 (Figure 9) out of flat material is
attached at two sides
of the base plate 240. An axis 243 runs in each case through the support parts
241, 242
through the upper end of each support part 241, 242. The axis 243 is solidly
connected to
the two support parts 241, 242.
A slot 244 preferably is aligned vertically, and a first gear rack 246
disposed
parallel to the slot 244 is disposed at the side part 222. A preferably
vertically-aligned
CA 02350390 2004-07-23
slot 245 is furnished at the other side part 223, and a second gear rack 247
is applied at
the other side part 223 aligned parallel to the slot 245.
A first gear wheel 248 is provided at a free end of the axis 243 and running
on the
axis 243, outside of the one side part 222, and the first gear whee1248 is
drivable by an
electric motor 250. A second gear wheel 249 is present at the other free end
of the axis
243, and running on the axis 243 outside of the other side part 223. The first
gear wheel
248 is engaged with the first gear rack 246, and the second gear wheel 249 is
engaged
with the second gear rack 247.
A drive motor 256 (Figures 5,6,8) is disposed on the lower cover sheet metal
piece 226, for driving of the stirrer rod 203 with its stirring blade 204.
A power grid switch 257 (Figures 2,3,4,5,6) serves for switching on and off of
the
device 201, in particular of the control unit 210.
The electrical conduits as well as the water hoses are not shown in the
drawings
for purposes of clarity of the presentation in the drawings.
If mocha coffee is to be prepared with the differently constructed embodiment
of
the present invention described by way of the Figures 2 through 9, that is the
device 201,
then the power grid switch 257 (Figures 2,3,4) is switched on, whereby the
control unit
210 (Figures 2,3,6) receives current (from a power grid not illustrated in the
drawings).
The control unit 210 initiates the lifting device 239 by placing the electric
motor
250 under electrical current. The gear wheel 248 (Figure 4) is placed thereby
immediately or through a further gear wheel drive in a suitable rotation
direction in
rotation, whereby the gear whee1248 moves upwardly at the gear rack 246. The
gear
wheel 248 carries along the axis 243, and the axis 243 is guided in the two
slots 244, 245.
Also, the gear whee1249 disposed at the other side of the device 201 (Figures
3,6), which
gear wheel 249 is disposed engaged with the gear rack 247, serves for guiding.
The axis
or axle 243 carries the base plate 240 along, whereby the cooking container
202 also is
transported together upwardly, and in fact to such extent until the
temperature sensor 211
and the stirrer rod 203 with its stirrer blade 204 immerse far into the
cooking vessel 202.
Now water is filled from the water tank 233 into the cooking vesse1202, mocha
coffee "flour" and sugar are transferred by hand from the receivers 231, 232
through the
opening 238 into the cooking vessel. The control unit switches the heating
body on, the
mocha coffee is prepared, the temperature of the mocha coffee being measured
through
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CA 02350390 2004-07-23
the temperature sensor 211 and delivered to the control unit 210, and the
mocha coffee is
stirred with the aid of the stirrer rod 203.
The heating body is switched off by the control unit 210, and the stirrer rod
203 is
set to rest after a predetermined time duration. The control unit switches the
electric
motor 250 on with inverted direction of rotation, whereby the lifting device
239 moves
downward together with the cooking vessel 202. The axle 243 rests at the ends
of the
slots 244, 245 after being received at the bottom, whereby a worm gear
engaging with the
gear wheel 248 and being further driven by the electric motor 250 rises upward
at the
gear wheel 248. The base plate 240 is thereby flipped, according to this
embodiment of
the invention by 95 degrees, and in fact such that the finished mocha coffee
can flow into
the drinking vesse1230. The base plate 240 returns to its starting position
control by a
program after emptying of the cooking vessel 202, and a new sequence of
operation for
the preparation of a mocha coffee can be started from the starting position of
the base
plate 240.
According to another embodiment (not illustrated in the drawings) of the
invention, the cooking vessel is disposed at the bottom above the heating body
in the
device, wherein agents disposed on the lifting device, that is a stirrer rod
with a stirrer
blade, a drive motor for the stirrer rod as well as a temperature sensor, in
each case are
lowered downwardly into the cooking vessel for the purpose of preparation of
the mocha
coffee, and are again moved backwardly upwards after preparation of the mocha
coffee.
The bars 251, 252 (Figures 3,4) preferably are formed as U-rails, which serve
to
support a cup blockage 258 (Figure 10). The latter cup blockage 258 has a
lower arc-
shaped guide part 259 for positioning of a drinking vessel 230 on the
perforated plate 229
(Figures 3,4), and in addition a transparent plate 260, whereby the pouring of
the mocha
coffee into the drinking vessel 230 can be observed through the transparent
plate 260.
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