US 20140318377A1
(19) United States
(12) Patent Application Publication (10) Pub. No.: US 2014/0318377 A1
Chen et al.
(54)
(43) Pub. Date:
BEVERAGE TEMPERATURE OPTIMIZER
Oct. 30, 2014
Publication Classi?cation
MACHINE
(51)
(71) Applicant: ELECTRICAL & ELECTRONICS
LTD., Hong Kong
(72) Inventors: Andrew Yuen Chin Chen, Hong Kong
(21) APPI- NO-3
14/123,504
(86)
PCT Flled:
_
PCT NO"
§ 371 (c)(1),
(2), (4) Date:
(57)
,
,
ABSTRACT
up water in the upper water chamber(s). The water has direct
0d“ 9’ 2013
PCT/IB2013/059223
Dec. 2, 2013
.
(60)
................................ ..
The present invention provides a beverage machine that heats
_
(22)
(200601)
.................................... 194/4;
(CN); Amy Decem Cheng’ Hong Kong
(CN); Raymond Wai Ming Wong, Hong
Kong (CN); Jeremy Kok Leong Tay,
Hong Kong (CN)
Int. Cl.
A47] 31/46
U-s- Cl
.
Related U's' Apphcatlon Data
Provisional application No. 61/711,313, ?led on Oct.
9, 2012.
contact with an electric heating system and the heated water
?ows by gravity and being distributed by a pour over system
into an underlying ?lter basket. The hot water chamber com
prises a sensor for water temperature. Once the water reaches
an optimal temperature, a motor and gear system would drive
a valve open and allow the heated water to ?ow into the
underlying ?lter basket. The present invention allows certain
amount of water to be heated up in individual batch, thereby
making it easy to manage water temperature in every batch.
Patent Application Publication
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if“
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777 W
1
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FIG. 1
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1
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6 ........................................... H
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FIG. 2
a:
2
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FIG. 3
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FIG. 4
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FIG. 5A
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Cam 2
FIGURE 6
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FIGURE 7A
FIGURE 7B
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BEVERAGE TEMPERATURE OPTIMIZER
MACHINE
produce hot coffee or other hot beverages at an optimal tem
perature in a simple and ef?cient way and energy (such as
FIELD OF THE INVENTION
heat) loss is minimized during the brewing process. In one
embodiment, after the optimal temperature is reached and
[0001] This invention relates to an automatic drip type cof
fee machine or beverage machine.
pense the hot/warm water into an underlying ?lter basket by
BACKGROUND OF THE INVENTION
[0002] A drip type coffee maker is one in which coffee brew
is obtained by a single pass of hot water through a quantity of
coffee grounds. The hot water ?owing to and through the
coffee grounds may be intermittent rather than continuous.
Also, the output temperature of the small amount of cold
water withdrawn from the water tank and heated up by the
heater is uncontrollable. This may cause the water tempera
ture inside the carafe or thermal jug to be not hot enough,
especially the ?rst few cups. Moreover, if a user only needs to
brew 4 cups of coffee using the 10-12 cups drip type coffee
maker, they need to brew 10-12 cups because it is understood
that the temperature of the ?rst few cups from the 10-12 cups
drip type coffee machine is not hot enough. Due to intermit
tent ?ow of hot water and uncontrollable small amount of
cold water withdrawn from the water tank and heated up by
detected by a temperature sensor, a valve will open to dis
gravity. For example, in the default position, a piston valve
opens a ?ow path between the cold water chamber and the hot
water chamber but closes the ?ow path between the hot water
chamber and the ?lter basket. In this embodiment, the user
can ?ll up both the cold water and hot water chambers at the
same time. After the user turns on the machine, the water
inside the hot water chamber would be heated up. Once the
water inside the hot water chamber reached the optimal tem
perature, the heater would be turned off and the piston valve
would be pushed upward. As a result, the ?ow path between
the cold water chamber and the hot water chamber would be
closed, whereas the ?ow path between the hot water chamber
and ?lter basket would be opened to dispense the hot water
into the underlying ?lter basket by gravity. When the hot
water chamber is being emptied, the temperature sensor
detects a drop to certain pre-determined temperature, and the
gear system starts to operate and moves the piston valve back
to the default position. At the same time, the piston valve
opens the ?ow path between the cold water chamber and the
hot water chamber but closes the ?ow path between the hot
the heater, distribution of hot water on coffee grounds would
be uneven and with limited spread out areas, thereby resulting
in coffee that is poorly extracted, less ?avorful and aromatic.
[0003] For the above reasons, the present invention
water chamber and the ?lter basket to allow cold water to ?ll
up the hot water chamber for the next batch of heating up or
improves and rearranges the conventional drip type coffee
brewing.
machine construction in order to improve the temperature of
the coffee, especially the ?rst few cups. In this invention, the
[0007]
The above heating process is accomplished by a
beverage machine can provide coffee or other beverages at an
unique structure of water container which is positioned on the
top of the machine. When the water reaches its desirable
optimal temperature (FIG. 1). The water tank and heating
temperature and comes into contact with ground coffee or tea
system are placed on top of the machine in order to minimize
any energy loss via the piping and tubing of pumps. In one
leaves, a carafe collects end beverage being dripped from the
?lter basket. In this way, the end beverage temperature in the
embodiment, the hot water will be dispensed into the ?lter
basket directly via a pour-over system that provides even
water distribution on the coffee grounds.
carafe or thermal jug can be more stable or signi?cantly
One objective of this invention is to reduce tempera
improved. The quality of the extracted coffee or tea would
also be more consistent or signi?cantly improved.
[0008] For machine with smaller capacity, the water con
tainer will only have one section because only hot water
chamber is required. If the machine is bigger, the water con
ture ?uctuation, achieve optimal water temperature or man
tainer will be separated into two or more sections: cold water
age water temperature, thereby serving a better tasting bev
chamber(s) and hot water chamber(s). In one embodiment, a
certain amount of water is heated and contained inside the hot
water chamber. A valve system between these chambers lim
SUMMARY OF THE INVENTION
[0004]
erage such as coffee or tea.
[0005] For conventional drip type coffee makers, the coffee
temperature from the initial brewing period is always too low
(average below 75° C.). In contrast, the present invention
ensures optimal coffee temperature even in the ?rst few cups.
Moreover, this invention eliminates many problems com
monly found in most drip type coffee maker such as excessive
steam, energy loss, and inconsistent brewing time. The
its the quantity of cold water ?owing from the cold water
chamber into the hot water chamber. In this way, a certain
amount of water is heated in individual batch, which allows
for easy management of time and water temperature in indi
vidual batch. Consequently, user waiting time is reduced and
the user can choose to produce less amount of beverage.
present invention minimizes any potential impact to brewing
[0009]
time due to calci?cation, or even minimizes calci?cation.
world, including the Specialty Coffee Association ofAmerica
(SCAA), the Specialty Coffee Association of Europe (SCAE)
and the European Coffee Brewing Centre (ECBC), the opti
[0006] The present invention is designed to improve bev
erage temperature without affecting the overall brewing time.
For the existing drip type coffee machines, it is very hard to
control output temperature or ensure temperature consistency
(some variance or some ?uctuation would happen in every
brewing process) because they are using the traditional heat
ing systems which are always positioned at the bottom of the
According to various coffee authorities aron the
mal coffee brewing and extraction temperature ranges from
92° C. to 96° C. This invention provides a brewing system that
can comply with this requirement consistently.
[0010] In one embodiment, there is provided a brewing
machine comprising (a) one or more cold water chambers and
machines. These heating systems heat and pump out hot
water from the bottom to the top via a lot of pipes and tubes.
In this way, signi?cant amount of energy loss would happen
one or more hot water chambers, the cold water chambers are
during the process. The new system in this invention can
beneath the hot water chamber(s); and (c) a valve controlling
attached to the hot water chambers, and the water chambers
are located on top of the machine; (b) a ?lter basket located
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water ?ow (i) between the cold water chamber(s) and the hot
water chamber(s) and (ii) between the hot water chamber(s)
and the ?lter basket. In one embodiment, the hot water cham
ber(s) comprises a temperature sensor and a heating system.
In another embodiment, the temperature sensor turns the
heating system on or off at pre-determined temperatures.
[0011] In one embodiment, when the valve opens a ?ow
path from the cold water chamber(s) to the hot water chamber
(s), water ?ow from the hot water chamber(s) to the ?lter
basket is stopped. Both the cold and hot water chambers can
then be ?lled up with water. In another embodiment, when the
valve closes a ?ow path from the cold water chamber(s) to the
hot water chamber(s), water is allowed to ?ow from the hot
water chamber(s) to the ?lter basket.
[0012] In one embodiment, the valve is a piston valve. In
another embodiment, the valve is controlled by a gear system
comprising one or more cams. In one embodiment, the gear
system rotates under the control of a motor gear system com
prising a motor, a micro switch, and gears. In one embodi
ment, the motor gear system begins to rotate at the same time
when the heating system is turned on or off. In another
embodiment, the motor gear system stops rotating when the
micro switch is hit by a cam of the gear system.
[0013] In one embodiment, the cold water chamber(s) of
the above brewing machine is/are placed on top of the hot
water chamber(s). In another embodiment, water ?ows from
the cold water chamber(s) to the hot water chamber(s) by
gravity. In yet another embodiment, heated water ?ows from
the hot water chamber(s) to the ?lter basket by gravity.
[0014] In one embodiment, the heated water from the hot
water chamber(s) is evenly distributed and spread all over the
coffee grounds in the ?lter basket via a pour over system. For
example, once the water is heated to a desired temperature in
the hot water chamber(s), the heated water would be dis
pensed in a continuous ?ow to a pour over system. The pour
over system would distribute and spread the heated water all
over the coffee grounds in the ?lter basket.
BRIEF DESCRIPTION OF THE FIGURES
[0015] FIG. 1 shows the front view of one embodiment of
this invention.
[0016] FIG. 2 shows a side section view of one embodiment
of this invention.
[0017] FIG. 3 shows an exploded perspective view of one
embodiment of this invention.
[0018] FIG. 4 shows an exploded perspective view of one
embodiment of the piston valve and gear system.
[0019]
FIG. 5A shows one embodiment of the gear system
when the valve closes (default position) the ?ow path from the
hot water chamber to the ?lter basket.
[0020] FIG. 5B shows one embodiment of the gear system
when the valve opens a ?ow path from the hot water chamber
to the ?lter basket.
[0021] FIG. 6 shows one embodiment of a perspective view
of the gear system.
[0022] FIG. 7A shows one embodiment of a perspective
view of pour over system.
[0023] FIG. 7B shows one embodiment of another perspec
tive view of pour over system.
machine and a ?lter basket is located underneath the water
tank. A cup, mug or glass carafe or thermal jug is placed
underneath the ?lter basket. In one embodiment, only one
button is required to turn on and off the machine.
[0025] In one embodiment, a body (10) supports one or
more cold water chamber or water supply chamber (1) which
is connected to the hot water chamber (2). In between these
chambers (1) & (2), there is a piston valve (4) that controls
water ?ow from the cold water chamber (1) to the hot water
chamber (2). The default position of this piston valve (4)
opens a ?ow path from the cold water chamber (2) to the hot
water chamber (1) but closes a ?ow path from the hot water
chamber to the ?lter basket. A user pours cold water into the
cold water chamber directly or via the top lid (9) and the cold
water ?lls up all the chambers up to a maximum level. In
another embodiment, there is only the hot water chamber (2)
and water is poured directly into the hot water chamber.
[0026] In one embodiment, the machine is turned on by
pressing an On/Off button. The heating system (3) will be
turned on to heat up the cold water in the hot water chamber.
An electronic temperature sensor built in the hot water cham
ber (2) monitors the water temperature. When the water
reaches the optimal temperature, the heating system (3) will
be turned off. The motor gear system (13) will begin to rotate
the gear system (15). In one embodiment shown in FIGS. 4-6,
the gear system (15) is designed with 2 separated cams, cam
1 is for activating the micro switch (14) and cam 2 is for
activating the valve piston (4). Once the gear system (15)
rotates to a proper position, cam 1 will activate the micro
switch, the motor gear system (13) will stop rotating, and cam
2 on top of the gear system (15) will push the piston valve
upwards at the same time. The ?ow path between the hot
water chamber (2) and the ?lter basket (5) is thus opened and
the heated water would ?ow gradually from the hot water
chamber (2) through the pour over system (16) to the ?lter
basket (5). Once all the heated water goes to the ?lter basket
(5) and the hot water chamber (2) becomes empty, the elec
tronic temperature sensor will detect a drop in temperature
that re-activates the motor system (13) and gear system to
restore the gear system (15) back to the default position, i.e.
the piston valve (4) will open a ?ow path between the cold
water chamber (1) and the hot water chamber and close the
?ow path between the hot water chamber (2) and the ?lter
basket to allow cold water to ?ll up the hot water chamber (2)
for the next batch of heating up or brewing.
[0027] The ?lterbasket (5) includes a pause and serve valve
(6) that enables liquid beverage to be stored in the basket (5).
When the valve (6) is pushed open by the container (7), the
liquid beverage (e.g. coffee or tea) would ?ow through the
valve (6) into the container (7). The container may be a cup,
mug or glass carafe or thermal jug. A keep warm heater (8)
built inside of the keep warm plate (11) can be placed under
neath the container (7) if a warming feature is required. The
keep warm heater (8) is covered by a bottom cover (12).
[0028] The lid (9) placed on top of the water chambers is to
cover the water chambers when the machine is in operation.
[0029]
The heating system (3) can be any type of heating
system generally known in the art. Similarly, any power can
be used in the heating system according to what is known in
the art.
DETAILED DESCRIPTION OF THE INVENTION
[0024] The con?guration of one embodiment of this inven
tion is shown in FIGS. 1-3. A water tank sits at the top of the
[0030]
The gear system (15) and motor gear system (13)
can be produced in any kind of material. The main function of
these gear systems is to open the piston valve (4). Moreover,
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cam 1 at the gear system and the micro switch act as a signal
for the gear systems to turn on and off.
[0031] FIG. 7 shows an embodiment of the pour over sys
tem (16). In one embodiment, the pour over system is located
the ?lter basket but cold water from the cold water chamber
cannot ?ow into the hot water chamber to prevent the dilution
of the hot water by the cold water.
in between the hot water chamber(s) and the ?lter basket. In
brewing machine comprising: (a) one or more cold water
one embodiment, the pour over system comprises at least one
chambers and one or more hot water chambers, the cold water
dispensing channel (17), which guide(s) the ?ow of water
chambers are attached to the hot water chambers, and the
water chambers are located on top of the machine; (b) a pour
over system located beneath each hot water chamber(s); (c) a
?lter basket located beneath each pour over system; and (d) a
from the hot water chamber to the ?lter basket, and at least
one drain hole (18) that allows the ?ow of water to be dis
pensed and spread all over the coffee grounds in the ?lter
[0038]
In one embodiment, the present invention provides a
pletely wet, warmed, steeped and extracted. In one embodi
ment, the dispensing channel is contained in a circular piece.
In another embodiment, the ?ow of the water in the dispens
valve controlling water ?ow (i) between the cold water cham
ber(s) and the hot water chamber(s) and (ii) between the hot
water chamber(s) and the ?lter basket.
[0039] In another embodiment, the present invention pro
ing channel can be in circular or any distributing forms. In one
embodiment, the heated water is delivered to reach every
vides a brewing machine comprising: (a) one or more hot
water chambers located on top of the machine; (b) a pour over
surface or spot of ground coffee in the ?lter basket via the
plurality of drain holes at the bottom surface of the pour over
system. This is to ensure all surfaces or spots of ground coffee
basket located beneath each pour over system; and (d) a valve
basket. This ensures the ground coffees is mostly or com
in the ?lter basket are well contacted with water. In one
embodiment, each dispensing channel has at least one drain
hole.
[0032] The pour over system is to replicate hot water pour
ing on ground coffee by a system instead of a person. The
system located beneath each hot water chamber(s); (c) a ?lter
controlling water ?ow between the hot water chamber(s) and
the ?lter basket.
[0040] In one embodiment, the hot water chamber(s) com
prises a temperature sensor and a heating system. In one
embodiment, the temperature sensor turns the heating system
on or off at pre-determined temperatures.
pour over system helps to improve some common inconsis
[0041]
tencies with manual pour over, among them disorganized and
inconsistent pours, and irregular extraction.
[0033] The pour over system (16) can be produced in any
kind of material and shape. The main function of the pour
system comprising one or more cams. In one embodiment,
over system is to distribute and spread heated water all over
the coffee grounds in the ?lter basket.
[0034] In one embodiment, the pour over system (16) has at
least one dispensing channel (17) with at least one drain hole
(18). The dispensing channel (17) can be in any size or any
shape.
[0035] One of ordinary skill in the art would readily con
?gure the ?lter basket (5) to ?t for any size or any shape of
?lters or tea container.
[0036] In the present invention, a cup, mug or glass carafe
or thermal jug can be used as the container (7). When a glass
carafe is used, a separated heating system may be required for
the keep warm feature.
[0037] FIG. 5 shows clearly how to operate (open and
close) the piston valve (4) when an optimal temperature is
reached in the hot water chamber. In one embodiment, the
default position of the valve piston (4) opens the ?ow path
from cold water chamber to hot water chamber (1) but closes
the ?ow path from the hot water chamber (2) to ?lter basket
(5) (FIG. 5A). Under this condition, water can ?ll up both
water chambers. After the machine is turned on, the heating
system (3) will heat up the cold water in the hot water cham
ber (2). in one embodiment, an electronic temperature sensor
built in the hot water chamber (2) would monitor the water
temperature. When the water reaches an optimal temperature,
the heating system (3) will be turned off. The motor gear
system (13) will begin to rotate the gear system (15). Once the
gear system rotates to a proper position and activates the
micro switch by a cam of the gear system, the gear system will
stop the motor gear system (13) from rotating (FIG. 5B) and
In one embodiment, the valve is controlled by a gear
the gear system rotates under the control of a motor gear
system comprising a motor, a micro switch, and gears.
[0042] In one embodiment, the motor gear system begins to
rotate at the same time when the heating system is turned on
or off. In another embodiment, the motor gear system stops
rotating when the micro switch is hit by a cam of the gear
system.
[0043] In one embodiment, the valve is a piston valve.
[0044] In one embodiment, when the valve opens a ?ow
path from the cold water chamber(s) to the hot water chamber
(s), water ?ow from the hot water chamber(s) to the ?lter
basket is stopped.
[0045] In one embodiment, when the valve closes a ?ow
path from the cold water chamber(s) to the hot water chamber
(s), water is allowed to ?ow from the hot water chamber(s) to
the ?lter basket.
[0046] In one embodiment, when the valve opens a ?ow
path from the cold water chamber(s) to the hot water chamber
(s), and stops water ?ow from the hot water chamber(s), the
cold and hot water chambers can be ?lled up with water.
[0047] In one embodiment, the cold water chamber(s) is
placed on top of the hot water chamber(s).
[0048]
In one embodiment, water ?ows from the cold water
chamber(s) to the hot water chamber(s) by gravity.
[0049]
In one embodiment, heated water ?ows from the hot
water chamber(s) to the ?lter basket by gravity via the pour
over system. In one embodiment, said pour over system com
prises one or more dispensing channel and at least one drain
hole.
1-16. (canceled)
17. A brewing machine comprising:
a. one or more hot water chambers that are located on top of
the machine;
another cam on top of this gear system (15) will push the
b. a pour over system located beneath each hot water cham
piston valve upward. This opens the ?ow path between the hot
water chamber (2) and ?lter basket (5) and closes the ?ow
path between the cold water chamber (1) and hot water cham
c. a ?lter basket located beneath each pour over system; and
ber (2), i.e. hot water can ?ow out of the hot water chamber to
ber(s);
d. a valve controlling water ?ow between the hot water
chamber(s) and the ?lter basket.
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18. The brewing machine of claim 17, further comprises
25. The brewing machine of claim 17, wherein the hot
one or more cold water chambers attached to the hot water
water chamber(s) comprises a temperature sensor and a heat
chambers.
19. The brewing machine of claim 18, wherein said cold
ing system.
water chambers are located on top of the hot water chambers.
20. The brewing machine of claim 18, wherein a valve
controls water ?ow between the cold water chamber(s) and
the hot water chamber(s).
21. The brewing machine of claim 20, wherein when the
valve opens a ?ow path from the cold water chamber(s) to the
hot water chamber(s), water ?ow from the hot water chamber
(s) to the ?lter basket is stopped.
22. The brewing machine of claim 20, wherein when the
valve closes a ?ow path from the cold water chamber(s) to the
hot water chamber(s), water is allowed to ?ow from the hot
water chamber(s) to the ?lter basket.
23. The brewing machine of claim 20, wherein when the
valve opens a ?ow path from the cold water chamber(s) to the
hot water chamber(s), and stops water ?ow from the hot water
chamber(s), the cold and hot water chambers can be ?lled up
with water.
24. The brewing machine of claim 20, wherein water ?ows
from the cold water chamber(s) to the hot water chamber(s)
by gravity.
26. The brewing machine of claim 25, wherein the tem
perature sensor turns the heating system on or off at pre
determined temperatures.
27. The brewing machine of claim 17, wherein the valve is
controlled by a gear system comprising one or more cams.
28. The brewing machine of claim 27, wherein the gear
system rotates under the control of a motor gear system com
prising a motor, a micro switch, and gears.
29. The brewing machine of claim 28, wherein the motor
gear system begins to rotate at the same time when the heating
system is turned on or off.
30. The brewing machine of claim 28, wherein the motor
gear system stops rotating when the micro switch is hit by a
cam of the gear system.
31. The brewing machine of claim 17, wherein the valve is
a piston valve.
32. The brewing machine of claim 17, wherein heated
water ?ows from the hot water chamber(s) to the ?lter basket
by gravity via the pour over system.
33. The brewing machine of claim 17, wherein said pour
over system comprises one or more dispensing channel and at
least one drain hole.