JPH0250727B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an apparatus for extracting coffee, etc., which obtains an extract liquid by injecting hot water under pressure into a material to be extracted, such as coffee powder.

Structure of conventional example and its problems Generally, it is preferable to extract coffee at high temperature for a short time and evenly from the entire coffee. For this reason, coffee brewing devices that pressurize with a pump or the like to extract coffee in a short period of time have conventionally been used.

DESCRIPTION OF THE PREFERRED EMBODIMENTS A conventional coffee extraction device as described above will be described below with reference to the drawings.

FIG. 1 shows a conventional extraction device for coffee, etc. In FIG. 1, 1 is a heater block, the block body 2, an upper cover 3,
The lower cover 4 is made of a good thermal conductor such as aluminum. The block main body 2 has a spiral water channel groove 5 on its front surface, and a spiral heating element 6 embedded in its back surface. Further, a through hole 7 is provided in the center thereof in communication with the water channel groove 5. Reference numeral 8 denotes a seal ring provided on the outer periphery of the block body 2, and an upper cover 3 is provided in a watertight manner to close the upper surface of the groove 5 to form a water channel 5a. The lower cover 4 is provided with a recess 10 having an opening 10a that communicates with the through hole 7 in a watertight manner through an O-ring 9, and a valve 11 for closing the opening 10a and a valve 11 are attached to the recess 10. A valve spring 12 is provided by screwing onto a valve seat 13. 14 is a diffusion plate screwed onto the valve seat 13 with mounting screws 15.

16 is an electromagnetic pump;
A suction pipe 18, one of which is open at the bottom of the water container 17, is connected to a connecting pipe 19 which communicates with the water passage 5a of the heater block formed by the groove 5 of the block body 2 through the suction pipe 18. Reference numeral 19a denotes an on-off valve provided between the connecting pipe 19 and the water channel 5a, which operates in conjunction with the operation of the pump 16.
When the pump 16 is in operation, the drain pipe 19b is closed and the connecting pipe 19 communicates with the water channel 5a, and when the pump 16 is stopped, the drain pipe 19b and the connecting pipe 19 are communicated with each other.

Reference numeral 20 denotes a hook plate with a central opening provided at the lower part of the lower cover 4, and around the central opening of the hook plate 20, there are a plurality of claws provided around the upper end of the field holder 22 equipped with a handle 21. 23
A plurality of notches 24 into which the filter holder is loosely fitted, and a plurality of engaging pieces 25 which engage with the claw 23 by rotation of the filter holder 22 after the claw 23 is loosely fitted are provided. 26 is a filter housed in the filter holder 22, and 27 is a seal packing that is engaged with the lower cover 4 and comes into airtight contact with the upper end of the filter 26. In addition, the field holder 2
In the lower part of 2, an outlet 28 is provided at the lower end of the tapered surface toward the center.

Reference numeral 29 is a receiving plate provided with a number of holes on which demitasse coffee cups 30 for storing this type of coffee are placed, and 31 is a receiving plate. Further, 32 is an automatic temperature controller thermally attached to the block body 2. 33 is coffee powder stored in the filter 26.

The operation of the extraction device configured as described above will be explained below.

First, fill the water container 17 with the required amount of water. Next, when electricity is started to be applied to the heating element 6, the automatic temperature controller 32
The temperature is controlled to a predetermined temperature. Then, a predetermined amount of coffee powder 33 is put into the filter 26 housed in the filter holder 22, and the filter 26 is brought into rotational engagement with the hook plate 20. The preparation for coffee extraction is now complete.

Next, set the demitasse coffee cup 30 on the receiving plate 29 which is located almost directly below the outlet 28 of the filter holder 22, and at the same time operate the operation switch (not shown) of the pump 16, connect the connection pipe 19 with the drain using the on-off valve 19a. A circuit is closed between the pipes 19b, and the water in the water container 17 is pumped by the pump 16 through the suction pipe 18 and the connecting pipe 19 into the block body 2. The water pumped into the block main body 2 passes through the spiral water channel 5a and is boiled by heat transfer from the heater block 1 to become hot water, passes through the through hole 7, presses the valve 11, and is diffused. It passes through the coffee powder 33 through the plate 14 and extracts the coffee liquid, which flows out from the outlet 28 and is poured into the demitasse coffee cup 30.
When an appropriate amount of coffee has been extracted into the demitasse coffee cup 30, the operation switch (not shown) of the pump 16 is operated to stop the pump 16, and at the same time the on-off valve 19a is operated, and the gap between the water channel 5a and the drain pipe 19b is The water pressure remaining in the water channel 5a is removed by opening the water channel 5a, thereby reducing the pressure in the water channel 5a.

However, with the above configuration, the coffee powder 33 must be weighed and put into the filter 26 one by one, and the filter 26 gets dirty after each extraction, so it is difficult to obtain delicious coffee unless it is washed every time it is extracted. Furthermore, the extraction device was large-scale and very inconvenient to use.

OBJECTS OF THE INVENTION In view of the above-mentioned conventional drawbacks, an object of the present invention is to provide an easy-to-use extraction device for brewing coffee, etc.

Composition of the Invention In order to achieve the above-mentioned object, the coffee extraction device of the present invention is provided with a saucer in the front part, and is erected at the rear of a base having a pump in the rear part, and the bottom part is connected to the pump. a water container, a water heating unit located in front of the water container and above the saucer, and having a waterway communicating with the pump; a holder located below the water heating unit; It is composed of a guide ring that stores the extract, and a lifting platform that moves up and down below the holder and the guide ring and engages with the holder. You can always obtain delicious coffee or other extracted liquid by simply raising the lifting platform that houses the holder and engaging it with the holder. is very simple.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings.

2 to 8 show a coffee extraction device according to an embodiment of the present invention. In FIGS. 2 and 3, numeral 41 denotes a base made of synthetic resin, etc. The stand 41 is equipped with a saucer 42 made of synthetic resin or the like that can be pulled out in the front direction.
Further, an electromagnetic pump 43 is provided at the rear via a plurality of vibration-proof rubbers 44, and the base 41 is supported via a side plate 45 by a back plate 47 having rubber legs 46. Reference numeral 48 denotes a water container erected substantially above the pump 43 located at the rear of the base 41 and made of synthetic resin or the like. A second recess 50 is provided on each surface, and a water supply hole 5 is provided on the bottom.
1 is communicated with the suction hole 53 of the pump 43 via a communication bushing 52 made of silicone rubber or the like. Reference numeral 54 denotes a supporting metal fitting 54 fixed and erected approximately in the center of the base 41 with a screw or the like and formed of a steel plate or the like. has a substantially rectangular opening 55, and a right side surface 56 and a left side surface 57 accommodate a portion of the water container 48 therein. 58
is a mounting bracket placed over the upper part of the support bracket 54 and a part of the water container 48 held between the right side 56 and left side 57 of the support bracket 54; A water heating unit 60 is provided through a plurality of spacers 59.

In FIG. 4, the water heating unit 60 has a substantially cylindrical heater 64, which has a heater block body 61 made of a good thermal conductor such as die-cast aluminum, and a heating wire 62 filled with insulating powder 63.
The water pipe 65 is provided with a water pipe 65 that is internally arranged to provide good heat conductivity. This water pipe 65 is provided with a spiral groove 66 continuous from one end to the other on its outer peripheral surface, and seal rings 67 are provided at both ends of the water pipe 65. is formed. Reference numeral 69 denotes an inlet located at the inlet of the water channel 68 and provided on one surface of the heater block body 61. Reference numeral 70 denotes a check valve screwed onto the inflow port 69, and this check valve 70 communicates with a spout (not shown) of the pump 43 through a pipe 71. 7
Reference numeral 2 denotes an outlet provided at the bottom of the heater block main body 61.

Reference numeral 73 denotes a discharge port which is branched in the middle of the water channel 68 and is provided facing the opposite side of the inlet port 69 of the heater block main body 61, and which communicates linearly with the inlet port 69 via the water channel 68; A substantially T-shaped control valve 74 is screwed onto the discharge port 73. The control valve 74 includes a substantially T-shaped control valve outer shell 74a, a valve body 75, a pressing body 77 that slides back and forth and presses the valve body 75 via a valve body spring 76, and the control valve 74. A drain port 78 is provided for draining the water drained by the tank. One end of a drain pipe 79 is attached to the drain port 78, and the other end of the drain pipe 79 opens above the saucer 42.

In addition, 80 is a terminal plate of the heater 64, 81 is a set screw for screwing the water tube 65 to the heater block body 61, and 82 is a thermistor provided in the water heating unit 60 in a thermally sensitive manner.

In FIG. 5, reference numeral 83 denotes an opening 8 located below the outlet 72 and communicated airtight with an O-ring 84.
5 in the center, this ring plate 8
3 is screwed onto the lower surface of the heater block main body 61 by a plurality of mounting screws 86.

Reference numeral 87 is located below the heater block main body 61 and has a substantially cylindrical shape with the ring plate 83 inside, and a handle 88 for operation is extended outward from the handle 87 and is integrally made of zinc die-casting or the like. The holder 87 is rotatably engaged with a stepped portion 89 located on the upper outer periphery of the ring plate 83 at its upper part.

Reference numeral 90 denotes a guide ring detachably provided with a male threaded portion 92 that communicates with the opening 85 and screws into the female threaded portion of a stepped hole 91 provided in the ring plate 83. A nozzle 93 made of stainless steel or the like and having an acutely tapered needle tip is press-fitted into the housing part 94 which surrounds the nozzle 93 and forms a substantially truncated conical cavity.
The guide ring 90 is made of sub-sharp alloy or the like.

The nozzle 93 has a nozzle hole 9 which is branched into two directions at the lower end and opened in the tapered surface.
5, and the guide ring 90 is provided with an O-ring 96.
When screwed on, the ring plate 83 is in airtight communication with the opening 85 of the ring plate 83. 97 is a valve formed of silicone rubber or the like and provided at the stepped portion of the stepped hole portion 91;
This valve 97 is biased in the direction of closing the opening 85 by a valve spring 99 provided in the central opening 98 of the male threaded portion 92 of the guide ring 90 .

In FIG. 6, reference numeral 100 denotes a support rod provided on the front side of the support fitting 54, and this support rod 100 is provided with an elevating plate 101 made of a stainless steel plate or the like so that it can be raised and lowered. The elevating plate 101 is provided with a notch 102 at its center, and a guide groove 104 with a substantially U-shaped cross section that opens at a sloped surface 103 descending into the notch 102, and is made of aluminum die-casting or the like. Lifting platform 10
5 has been expanded. Furthermore, a pair of right and left hook plates 106 are formed on the upper surface of the lifting platform 105 by zinc die casting or the like, with a gap narrower than the U-shaped groove width of the guide groove 104. In addition, the lower center of the lifting platform 105 has a discharge port 107 in the center.
A disk-shaped capsule seat 108 made of stainless steel and having a concave periphery is provided.

The pair of hook plates 106 are integrally provided with hook pieces 109 that protrude outward from each other, and the hook pieces 109 slide upward together with the elevating plate 101 to almost reach the upper end of the sliding range of the elevating plate 101. When it reaches the holder 87, it passes through the notch 110 provided around the lower opening of the holder 87, and the holder 8
7 engages with the engaging part 111 adjacent to the notch part 110.

In FIGS. 3, 4 and 6, 112
2, on the side of the fixture 58 shown in FIG. 2 on which the water heating unit 60 made of steel plate or the like is placed,
That is, the lever 11 is slidably provided in the longitudinal direction of the heater block main body 61.
2 engages near the base of the handle 88 of the holder 87 and slides in conjunction with the rotation of the holder 87.

Reference numeral 113 is made of a steel plate or the like, and is connected to the lever 1.
This link 113 is pivotally supported by a shaft 115 on the right side surface 56 of the support fitting 54, and the other end is in contact with the engagement provided on the side wall of the elevating plate 101. Joint shaft 11
6 to control the rotation of the holder 87.
01, and the lifting platform 105 is interlocked with this. 117 is a contact piece that forms the recess 114 of the lever 112;
7, while the lifting plate 101 slides almost to the upper end and the hook piece 109 engages with the engaging part 111 by the rotation of the holder 87, it slides into contact with the end part 118 of the link 113. The lifting platform 105 is maintained at approximately the upper end position. The contact piece 117 has a first square hole 1.
19 and a second square hole 120, and oppositely thereto, the terminal portion 118 is provided with a protrusion 121 and a step protrusion 122. Further, 123 is a protruding piece provided adjacent to the abutting piece 117 and protruding from the lever 112, and 124 is an engaging piece provided on the upper part of the link 113. 123 and the lifting platform 10
Force 5 to descend.

The lever 112, the link 113, and the shaft 11
5 and the engagement shaft 116 constitute a lifting mechanism, and these are connected to the first recess 4 on the right side of the water container 48.
It is stored in 9. Reference numeral 125 designates a printed circuit board for electrical circuit control that is housed and fixed in the second recess 50 on the left side of the water container 48.

Reference numeral 126 denotes a rail made of synthetic resin or the like and fixed to the lever 112, and this rail 126 is connected to the rotation of the handle 88 so that the slope portion 127 pushes through the pressing body 77 of the control valve 74. When the slope portion 127 of the rail 126 moves away from the pressing body 77, the valve body spring 76 presses the valve body spring 76 and urges the valve body 75.
5 is released, and the water channel 68 is opened above the saucer 42 via the drain port 78 and the drain pipe 79.

Reference numeral 128 denotes a pair of parallel guide ribs provided on the side wall 129 of the water container 48 adjacent to the lifting platform 101 that moves up and down. It is enclosed and extended downward. In addition,
A drop hole 130 is formed by the side wall 129 of the water container 48, the guide rib 128, and the support fitting 54.

2 and 7, reference numeral 131 is a drain hole provided at the bottom of the water container 48, and this drain hole 131 is connected to the saucer 42 through a valve 132 provided on the right side 56 of the support fitting 54. It opens upward. Note that the drain hole 131 is normally closed with a valve 132. 133 is a float switch provided at the bottom of the water container 48, which detects the water level of the water stored in the water container 48; 134 is a Tetron filter provided in the water supply hole 51. 135 is an operating knob for the valve 132; 136 is a lid for the water container 48; 137 is a receiving plate located below the lifting platform 105 and provided at the opening of the base 41; It has a large number of holes 138 through which coffee dripped from the discharge port 107 passes through the saucer 42, and a demitasse coffee cup 139 is placed thereon. 140 is a heat shield plate of the water heating unit 60, 141 is its cover, and 142 is an operation switch provided on the operation panel 143.

In FIG. 5, reference numeral 144 denotes a capsule in which coffee powder 145 is sealed, and this capsule 144 has a capsule body 146 formed of a thin film of aluminum or the like in a substantially conical shape with an obtuse-angled tip, and a convex spherical capsule body 146 that is pressurized at its substantially central portion. The bottom part 1 has a weak line part 147 that expands and opens at times, and is formed of a thin film such as aluminum.
48, and a filter 149 having a gap with the bottom portion 148 and having an opening suitable for filtering the coffee powder 145 enclosed in the capsule body 146.
The capsule main body 146 is further expanded to form an outer rim 150, which is then press-sealed. Note that the end portion of the capsule body 146 is wrapped around and sealed under the outer peripheral rim 150.

The operation of the coffee extraction device configured as described above will be described below.

First, the handle 88 of the holder 87 is rotated forward (in the direction opposite to the water container 48) to lower the elevator platform 105. As a result, the lever 112
The slope portion 127 of the rail 126 provided for the control valve 7
4, the pressing body 77 releases the pressing force on the valve body 75 via the valve body spring 76, and the water channel 68 is separated from the drain port 78 and the drain pipe 79.
will be released via.

Next, a required amount of water is poured into the water container 48, and the operation switch 142 is operated to start supplying electricity to the heater 64. As time passes, the water boiling unit 60
Although the temperature of the drain pipe 79 increases, the water vapor pressure in the water channel 68 does not increase and the pressure escapes from the drain pipe 79 communicated with the control valve 74. When a predetermined period of time has elapsed, the thermistor 82 turns off the water heater unit 60.
The temperature of the heater 64 is sensed, and the printed circuit board 125 for controlling the electric circuit begins to control the supply of electricity to the heater 64.

Here, the capsule 144 is inserted into the guide groove 104 of the lifting table 105. When the capsule 144 is inserted to the capsule seat 108 located directly below the guide ring 90, the capsule 144 is positioned by engaging the convex spherical bottom portion 148 with the concave capsule seat 108.

Next, the handle 88 is pressed and rotated backwards (towards the water container 48) to raise the elevator platform 105 via the lever 112, link 113, and elevator plate 101. The control valve 74 is pressed against the valve body spring 76 via the pressing body 77 to bias the valve body 75 . On the other hand, the capsule 144 placed on the lifting table 105 is guided into the storage part 94 of the guide ring 90 which has approximately the same shape as the capsule body 146, and its tip is pierced by the needle-like nozzle 93.
A nozzle hole 95 opens in the capsule 144 .

As the handle 88 continues to rotate, the concave portion 114 of the lever 112 moves into the protrusion 1 of the end portion 118 of the link 113.
21, the capsule base 105 reaches almost the upper end of the sliding range together with the elevator plate 101, and even if the handle 88 is rotated, the lever 112 does not come into contact with the end portion 118 with the contact piece 117. There is no rotation of the link 113, and therefore, there is no elevation of the lifting platform 105. At this time, the hook piece 109 provided on the lifting table 105 has entered through the notch 110 of the holder 87. When the holder 87 is further rotated via the handle 88, the hook piece 1
09 and the inner surface of the engaging portion 111 of the holder 87, the lifting table 105 is further lifted up. The elevator platform 105 lifts up and the capsule seat 10
The outer rim 150 of the capsule 144 abuts on the
is pressed against the lower end of the guide ring 90 from above to hold the capsule 144 airtight, and the setting of the capsule 144 is completed. On the other hand lever 112
At the link 113, the lever 112 further slides rearward in conjunction with the rotation of the handle 88. At this time, the protrusion 121 provided on the end portion 118 of the link 113 passes through the first square hole 119 provided on the abutting piece 117 of the lever 112 and enters the second square hole 1.
20 and also engages with the step protrusion 122 of the terminal portion 118 and the first square hole 119,
Each time the end face of the first square hole 119 passes over each step of the step protrusion 122, a sound is emitted to indicate the state in which the capsule 144 is held by the capsule seat 108 and the guide ring 90.

Next, when the demitasse coffee cup 139 is placed on the receiving plate 137 below the outlet 107 of the capsule seat 108 and the operating switch 142 is operated to start the operation of the pump 43, the water in the water container 48 is pumped out. 43 to the discharge pipe of the pump 43 (not shown)
The water is then forced into the water channel 68 from the inlet 69 of the heater block body 61 via the pipe 71 and the check valve 70. The pressure-fed water circulates near the outer periphery of the heater 64 through a spiral waterway 68 and is boiled to become hot water, which flows out from an outlet 72. Furthermore, this hot water presses the valve 97 by the discharge pressure from the pump 43 and passes through the nozzle hole 95 of the nozzle 93 to the capsule 1.
The coffee powder 145 in the coffee powder 44 is sprayed and sprayed. The hot water force-fed into the capsule 144 passes through coffee powder 145 and is filtered by a filter 149, and is then discharged from the discharge port 107 into a demitasse coffee cup 1.
39 and the coffee is ready.

Next, the removal of the capsule 144 will be explained.
First, by rotating the handle 88 toward the front, the engaging portion 111 of the holder 87 and the hook piece 109 are disengaged, and at the same time, the abutting piece 117 of the lever 112 and the end portion 118 of the link 113 are disengaged from each other. , the lifting platform 105 descends under its own weight. However, at the time of extraction, the capsule 144 stored in the guide ring 90 is pressed against the lower end surface of the guide ring 90 and the upper surface of the capsule seat 108, and is also press-fitted into the approximately conical tapered side wall of the storage portion 94 of the guide ring 90. kept airtight. Therefore, the capsule 144 remains housed in the guide ring 90, and the elevator platform 105, which has descended independently, moves to the outer rim 1 of the capsule 144.
The end of the hook plate 106 is hooked onto the hook 50 and stopped.
When the handle 88 is further rotated in this state, the engaging piece 124 of the link 113 waits.
The protruding piece 123 of the lever 112 engages with the lever 112, the link 113, and the rotating force of the handle 88.
The lifting table 105 is pushed down via the lifting plate 101, the end of the hook plate 106 comes into contact with the outer rim 150 of the capsule 144, and the capsule 144 is removed from the guide ring 90.

If you want to continue brewing coffee, use the third
In Figures and Figure 8, new capsule 1 before extraction.
51 and the guide groove 10 of the lifting platform 105 in the same manner as above.
4 and a pair of hook plates 106.
and insert it until the capsule seat 108. At this time, extracted capsule 152 is new capsule 151
The inclined surface 1 of the guide groove 104 has descended due to being pressed by
03, and the fall hole 1 formed by the side wall 129 of the water container 48, the guide rib 128, and the support fitting 54 is moved from the notch 102 of the elevating plate 101 by its own weight.
30 and falls into the saucer 42 and is stored therein. After that, repeat the above procedure to extract coffee.

As described above, according to this embodiment, coffee powder 1
The capsule 144 containing 45 is set on the lifting platform 105, and after extraction, the capsule 144 is placed in the drop hole 13.
Since the coffee powder is dropped and stored in the saucer 42 from zero, it is easy to prepare the coffee powder before extraction and to clean and maintain the extraction device after extraction, making it easy to obtain coffee.

In the above embodiments, the coffee powder is encapsulated in a capsule, but the container for storing the coffee powder does not need to be sealed, as long as it can contain and extract a certain amount of coffee powder.

Moreover, although coffee powder is used as the material to be extracted, it goes without saying that it is not necessary to limit the extract to coffee powder.

Effects of the Invention As described above, according to the present invention, there is provided a water container which is provided with a saucer in the front part and is erected at the rear of a base which is provided with a pump in the rear part, and whose bottom part communicates with the pump; A water boiling unit located in front of the water container and above the saucer and having a waterway communicating with the pump, a holder located below the water boiling unit, and a guide ring that stores coffee powder or other to-be-extracted material. and a lifting platform that moves up and down below the holder and guide ring and engages with the holder, so that the lifting platform containing the material to be extracted, such as coffee powder, is raised and engaged with the holder. With the simple operation of combining, you can always obtain delicious coffee extract, and
After extraction, it is only necessary to remove the material to be extracted from the lifting platform, making it extremely easy to use.

[Brief explanation of drawings]

FIG. 1 is a cross-sectional view showing a conventional coffee brewing device, FIG. 2 is a cross-sectional view of a coffee brewing device showing an embodiment of the present invention, FIG. 3 is a cross-sectional view of the same, and FIGS. 4 and 5 are FIG. 6 is an enlarged sectional view of the essential parts, FIG. 6 is a perspective view of the essential parts, FIG. 7 is a perspective view of the coffee extraction device, and FIG. 8 is an enlarged partial sectional view of the essential parts. 41...base, 42...saucer, 43...pump, 48...water container, 60...water boiling unit,
68... Channel, 87... Holder, 90... Guide ring, 105... Lifting platform, 106... Hook plate, 111... Engaging portion.

Claims (1)

[Claims] 1. A water container that is provided with a saucer at the front and is installed at the rear of a base that is equipped with a pump at the rear, and whose bottom communicates with the pump, and in front of the water container and above the saucer. a water heating unit located at the water heating unit and having a water channel communicating with the pump; a holder located below the water heating unit; a guide ring for storing a material to be extracted such as coffee powder;
A brewing device for brewing coffee, etc., comprising the holder and a lifting platform that moves up and down below the guide ring and engages with the holder.