JPS6192637A - Coffee extractor - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Technical Field] This invention relates to a device for extracting coffee, tea, chocolate liquid, etc., and in particular, it is a portable device for home use that extracts coffee, etc. at a temperature below the boiling point. The present invention relates to an extraction device capable of extracting at a high temperature above the boiling point, and furthermore having a function of foaming the extract with steam of hot water.

[Prior art and its problems]

Conventionally, for example, in the case of coffee extraction equipment, coffee beans are roasted or ground using hot water at a temperature below the normal boiling point, and then coffee is extracted using a drip-type, siphon-type, or pot-type coffee extractor. Are known. (For example, U.S. Pat. No. 4,413,552, U.S. Pat.
No. 083295, No. 4361750, No. 140
2257 etc.) Also, steam or regular boiling I11/7
It is also known to make a different type of coffee, so-called 1-esbreso, by pouring hot water 12 degrees hotter than the point on coffee beans.

(For example, U.S. Pat. Nos. 4,102,255 and 350
No. 5947) There is also a way to make coffee called ``sara'' (a so-called 1-kabuchi made by adding milk to this espresso-style coffee, mixing it, and then injecting steam.) In this way, conventional equipment for making coffee and espresso have different structures, so it is necessary to use multiple equipment separately in order to make the three types of coffee mentioned above. I couldn't make do with just one device. Having such a wide variety of coffee extractors takes up a lot of space in a typical household, and it also poses a financial burden.

Furthermore, there are some structural disadvantages of conventional devices of this type, as described below.

With this conventional PII, all of the hot water in the sealed container that reaches the boiling H1ζ state is extracted at once by the internal pressure, so the problem is that the extraction: 1; cannot be adjusted. In addition, since it is not possible to extract 3', 1 g for one cup, the coffee liquid must first be extracted into a container such as a cup, and then the coffee liquid must be transferred from the container to the coffee cup. It also has some inconvenience.

To explain in more detail the conventional esprenzo type coffee brewing device shown in Fig. 11, 1 is a water tank for storing water for extracting coffee liquid, and a sealed container located at a lower position. 2 and a water supply pipe 4 having an on-off valve 3. An electric heating element 5 is provided within the closed container 2. Reference numeral 6 denotes a flask-shaped extractor airtightly mounted on the upper opening of the airtight container 2, and a filter 7 is provided inside the extractor, and a coffee powder storage chamber 8 is provided.
is formed, and a bottom central shingle communication passage 8a is provided vertically below. Reference numeral 9 denotes a cup that is airtightly mounted on the upper opening of the extractor 6, and a communication passage 10 that communicates with the extractor 6 is erected at the center of the bottom of the cup.

FIG. 12 shows an electric circuit diagram of the above-mentioned coffee brewing device, in which an electric heating element 5 provided in the closed container 2, a thermostat 11 such as a bimetal provided at the bottom of the closed container 2, and a master switch 12 are connected in series. is connected.

13 is a pylon lamp.

In use, first, a predetermined amount of yia is supplied to the water tank 1, the opening valve 3 is opened, water is supplied into the closed container 2, and then the opening/closing valve 3 is closed. Also cup 9
from the flask-shaped extractor 6 to the flask-shaped extractor 6
After filling the coffee powder storage chamber ε inside the container 9, the container 9 is airtightly placed on the flask-shaped extraction gH6 and fixed with a fastening band 14. When the master switch 12 is closed in such a state, the electric heating element 5 becomes a 'LL' type f store, and the water a supplied in the closed container is heated to vll, 11 and ζ, and its boiling water is heated. Pressure (because of this, the internal pressure of the sealed container 2 increases and the balance with atmospheric pressure is lost, and the hot water 1 to C is supplied from the communication path 8a into the flask-shaped extractor 6, and the flask-shaped extraction The coffee liquid d extracted by the coffee grounds in the container 6 is supplied from the communication path 1o into the cup 9 and is temporarily extracted from the closed container 2 to the cup 9.

Therefore, in the conventional coffee brewing apparatus described above, since the closed container 2, the flask-shaped extractor 6, and the cup 9 are always in communication, when the inside of the closed container 2 reaches a surge state, almost all of the hot water C in the closed container 2 is Because U is sequentially supplied from the flask-shaped extractor 6 to the cup 9 by Lucian pressure and extracted all at once, even if you want to extract one cup of coffee, for example, you end up extracting the excess coffee liquid, so the amount of extraction is limited. It is impossible to make adjustments, and there are problems in terms of handling and economics. Almost all of the coffee liquid d extracted from the hot water C in the airtight container 2 is temporarily stored in the cutlet 9, so it needs to be transferred to a coffee cup that is not shown in the drawing, which affects handling and taste. I have the above problem. Also, since there is no steam generation mechanism, it is not possible to enjoy, for example, cappuccino coffee.

[Purpose of the invention]

The first is that different types of coffee beverages can be brewed and foamed with one lever brewing device.

The second method is to adjust the amount of coffee beverage extracted and heat and extract an appropriate amount of water.

Thirdly, even after brewing, the hot water in the container can be kept at an appropriate temperature so that coffee can be extracted at the right time.
A heating means for a closed container comprising a thermal element, a first communication passage communicating between the water tank and the closed container, an extractor having one inlet/outlet, and an inlet between the closed container and the extractor. a second communication path that communicates with the heating element; a 41st communication path that transfers steam from the top of the container; a 41st communication path that discharges steam from the top of the container; A △ inch that interlocks with a valve provided in the middle of the communication passage, and a third inch that is connected in series with the heating element and
a second valve provided in the middle of the communication path, a switch that operates in conjunction with the second valve, and a switch connected in series with the switch,
a third valve provided in the middle of the fourth communication passage;
It also includes a second switch that operates in conjunction with the valve, and a third switch that is connected in parallel with the switch and is activated by detecting the temperature of the closed container.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. 1 to 10.

This extraction device includes a closed container 1, a water tank 2, an H0 heat device 3, four communication passages 4, 5, 6.7, an extractor 8, three control valves 9, 10 + 11, and three switches 12. ，
Consists of a drowsiness circuit 15 that incorporates 13.14 yen.

The airtight container 1 is placed on the right side inside the case 16, and the case 1
Water tank 2 is arranged on the left side of 6, and this water tank 2
The airtight container 1 is placed below the airtight container 1, and the water contained in the water tank 2 uses the difference in head to pass through the communication path 4 provided in communication with the outlet 17 at the bottom of the water tank 2 to reach the airtight container 1. Water is fed into the sealed container 1 from the side inlet 18.

The case 16 includes a flat rectangular container-shaped base part 19, a rectangular machine frame part 20 provided on the rear band of the upper surface of this base part 19 and opened in the vertical direction, and a frame part 20 on the right side above the machine frame part 20. The overhang 21 is attached and attaches the extractor 8 to the front.
, a cover 22 that covers the upper part of the overhang part 21 , a cover 23 that covers the L side of the water tank 2 , a bottom plate part 24 that covers the lower part of the base part 19 , and a leg part that is attached to the lower surface of the bottom plate part 24 . It also consists of 25.

An auxiliary tank 27 is formed in the water tank 2 by a partition plate 26. This auxiliary tank 27 is installed so as to maintain the same water level by forming a communication hole 28 in the lower part of the partition plate 26. An outlet 17 of the communication Δ passageway 4 is provided near the communication hole 28. Further, the auxiliary tank 27 is formed with a deeper bottom 30, the water level of the water tank 2 can be checked through a window hole 2a, and a notch 2b is formed on the upper edge of the water tank 2 on the side opposite to the various devices. It is set to 5V, which only allows water to escape when the water is full. The communication path 4 is connected to a vertical part 31 connected to the outlet 17 and a lower end of this vertical part 31,
・r-I from the horizontal part 32 connected to the closed container 1! Being grabbed. One side of the auxiliary tank 27 has a cover 2 that covers it.
Install 78. This vertical part 31 is designed so that water can flow only from the outlet 17 to the inlet 18, that is, a closed chamber as will be described later! A reversal valve 33 is provided to prevent hot water from flowing back into the water tank 2 when the water sent into the tank 1 is boiled. This check valve 33 is connected to the valve body 34 and the valve body 35 by r, (
,I(,ry:*”.

The valve box 34 has a pair of cylindrical first valves made of gold and steel.
The second valve holders 36 and 37 are screwed on and housed in the box 34. A first sliding piece 38 formed above the valve body 35 at the center of the lower surface of the first valve holder 36
A first insertion hole 39 is formed to form a valve seat 40, and another second (10) ring 43 is attached to it. 41 has a watertight first
0 ring 42 is attached, and the first O ring 42 is attached. The second valve holder 36, 37 is fixed by screwing or the like. On the other hand, a valve body 35 is located at the center of the lower surface of the second valve holder 37.
A second insertion hole 45 for the second sliding piece 44 is formed at the bottom (llfl).In other words, the valve body 35 is disc-shaped;
On this upper and lower surface, the first. A second sliding piece 38.44 is formed and this first sliding piece 38.44 is formed. The second sliding piece 38.44 is the first sliding piece. It is inserted into the second insertion hole 39.45 so that the valve body 35 can be moved. Further, a reinforcing rib 46 in the form of a rising wall is provided around the edge of the disc-shaped valve body 35, and the root of the second sliding piece 44 is formed with a large diameter to form a one-way flow inhibiting portion 47. The circumferential surface of the first and second sliding pieces 38 and 44 has a first groove in the axial direction. A second communicating path 48,49 is formed. The one-way flow suppressing portion 47 is adapted to be in contact with one of the second insertion holes 45 of the valve box 34 to provide a gap for water flow during water supply. At this time, water passes through the first insertion hole 39° inside the valve box 34 and the second insertion hole 45.

The airtight container 1 is attached to a mounting seat 50 that is made of cedar on the overhang 21, and a hanging F that is attached to the top 51 of the airtight container 10.
The bracket 52 is fixed via a separate connecting plate 53, and the connecting plate 53 suppresses the 411I effect.

A communication path 5 connects an outlet 54 at the top 51 of the closed container 1 and an exhaust port 55 near the bottom 30 of the auxiliary tack 27.

A normally closed air vent valve 9 is provided in the middle of this communication path 5. This air vent valve 9 has a second
In order to supply water from water tank 2 to sealed container 1 for each subsequent extraction, what is the steam pressure remaining in the sealed container from the previous extraction? +n It is designed so that it can be safely discharged into the auxiliary tank 27.

The second air vent valve 9 is equipped with a locking function. This rotation function is provided with a slider 58 that moves up and down and rotates every 60 degrees as the push button 57 of the air vent valve 9 moves up and down.
On the outer periphery of the slider 68, an engaging protrusion 59 is formed as the slider 58 rotates every 60 times when the push button 57 is moved down.
A plurality of engagement protrusions 0 that are to be repeatedly engaged and disengaged are formed at equal intervals in the direction of movement, and are applied by the biasing force of the spring 61 within the slider 58. being oppressed.

A normally open switch 12 is provided so as to be applied to the lower surface of the push button 57 of the air vent valve 9. That is, the switch 12 is designed to operate in conjunction with the air vent valve 9.

A muffler 62 is attached to the exhaust port 55 located near the bottom 30 of the auxiliary tank 27.

shell
H4 small bowl j r'l QsuIff +, + cloudy i :n
5 S'-<6 is inserted, and its base end 64 is connected to the closed container 1
The tip 65 reaches the middle of the inner part ii:ij and is connected to the inlet of the extractor 3 containing coffee powder, which is disposed at the tip of the overhanging part 21, closer to I and W. There is a spout 66 on the bottom of the extractor B.
is provided and a suitable container 67 is placed.

spring. In the extractor 8, the tip of the communication passage 6 is communicated with the tip of the overhanging part 21 within the vertical frame 68, and the lid 69 is fixedly installed and the lower part is open (. Filter 7 with backing 70 interposed on the lower surface side
1 is airtightly attached, and a raw material storage container 73 into which a cup-shaped filter 72 for storing coffee powder is removably fitted, and a spout 6 is formed at the center of the bottom thereof.

+sC'l''l A system protrusion 74 is sunk in 1ljlJ of the storage container 73, and a suitable position on its periphery is removably clamped by a rotating clamping lever 76 provided on a gripping handle 75. The raw material storage container 7
3 grips the grip handle 75 and inserts it into the bottom of the holding frame 68 from the lower opening side, and lifts it up to a position where the upper part □ opening is covered by the lid 69 described in n1j, and as required. By rotating the angle, the +iQ locking protrusion 74 engages with the engaging portion 77 provided on the inner surface of the holding frame 68, and by this engagement, the IQ:I'4 pongee container 73 is attached to the holding frame 6.
8, and its upper end abuts against the backing 7o to be airtightly fixed.

A container 67 such as a cup is placed on the base 19 below this extractor 8.
is placed, and the coffee liquid from the spout 66 is stored in the container 67. A rectangular depression 79 is formed in the base 19 on which the container 67 is placed, and a notch 80 is formed on one side of the depression 79. A dish-shaped container 81 is removably housed in this rectangular depression 79, and a perforated plate 82 is removably provided to cover the top of this dish-shaped container 81. Therefore, the container 81 and the perforated plate 82 can be removed by inserting a finger into the notch 80.

Another communication passage 7 is connected to the outlet 83 of the top 51 of the airtight container 1, and the tip 84 of this communication passage 7 is bent in an inverted shape and can be rotated horizontally. be established. A normally closed valve 11 is provided in the middle of this communication path 7.

As will be described later, this valve 11 opens the air in the sealed container to the atmosphere only when coffee is extracted for the first time, and supplies water in the water tank to the container. It was installed to take out the steam and froth milk. And this valve 1
1 and the lower part of both the push buttons 85 and 86 of the valve 10: one normally closed switch 13 is provided on the other hand. That is, this switch 13 is installed so as to be linked with the operation of each push button 85 and 86. The push buttons 57, 85, and 86 are guided by a mounting bracket 92 so that they can be operated.

A safety valve 87 that opens when the pressure exceeds a certain level is provided at the top 51 of the airtight container 10, and a communication passage 88 that opens in the auxiliary tank 27 is connected to this safety valve 87. When the safety valve 87 opens, steam is transferred to the auxiliary tank 27. It is now being introduced to

A heating device 3 such as a sheathed heater is housed inside the closed container 1 near the bottom 89, and an end 90 of the heating device 3 is housed inside the closed container 1 near the bottom 89.
is attached to the side part 91 of the sealed container 1 so as to protrude from the side part 91. Furthermore, a thermoswitch 14 that closes at 80°C and opens at 90°C is attached to the side part 91 of the sealed container 1.
A drain bolt 94 is provided near the bottom 89 of the closed container 1, and a thermoswitch 93 that opens at 110'C or above is installed at the bottom 89 of the closed container 1. This thermoswitch 93 is a manual reset type, and the reset button 95 protrudes downward, and the reset button 95 can be pressed from the outside by a rubber slope 97 whose edge is fitted into the opening 96 of the bottom plate 24 and then pulled. It looks like this.

A master switch 98 having a built-in lamp 99 is attached to the 1'Jif surface of the machine frame 20, and the end 90 of the 4-position 3 is connected to the electric circuit 15.

This electric circuit 15 is connected in series with an AC power supply 101: 'knee master switch 98, switch 12, thermoswitch 1
A lamp 99 and a resistor 1 are provided in parallel with the thermoswitch 14, and a lamp 99 and a resistor 1 are provided in parallel with the thermoswitch 14.
A series circuit 103 of 02 is provided, and a τα series circuit 103a of a lamp 99a and a resistor 102a is provided in parallel to the heating device 3 and thermoswitch 14.

First, a predetermined amount of water a is supplied into the water tank 2 using a jug or the like, and the gripping handle 75 is gripped and rotated to disengage the locking protrusion 74 and disengage it. Original: After pulling out the ρF storage container 73 from the lower opening of the holding frame 68, and then bottoming it into the raw material storage container 73 and storing the ground coffee in the cup-shaped filter 72 at °C,
The raw material storage container 73 is attached to the holding frame 68 by the reverse operation.

Next, when the steam port (supply push button 85) protruding from the cover 22 is depressed, the valve 11 opens and the air inside the sealed container 1 is released to the atmosphere from the tip 84 of the communication path 7, and the water tank 2 The water a inside is supplied into the closed container 1 via the check valve 3; 3 and the communication path 4 due to the head difference.

When the master switch 98 is closed, the lamp 99
, 99a lights up and supplies power to the heating device 3.

Due to this power supply, water a at room temperature is heated by the +JO heating device (state of ~1), and when the temperature reaches 90°C by the thermo switch 14, nine lamps are turned off and the heating device 3
is cut off.

Here, the water a in the sealed container 1 is heated by one temperature at 80 to 90°C by the thermoswitch 14 (13°0 state).

Next, when the container 67 is placed 1σ° C. below the spout 66 and the coffee liquid extraction push button 86 is pressed, the valve 10 opens and the closed container 1 and the flood passage 60 are brought into communication, and the switch is turned on. 13 is closed and the heating device 3 is energized. Therefore, if the push button 86 is continued to be pressed, the water will be gradually heated from the keep-warm temperature to the boiling point L1. ! L (state C), airtight container 1 due to pressure balance due to increase in internal pressure
The amount of boiling water inside is up to the base end 64, that is, the amount of hot water in the closed container 1
An amount approximately equal to the capacity of the upper half is supplied through the communication path 6 to the extractor 8 'v'l- containing the ground coffee, and the extracted coffee liquid C flows from the spout 66 of the extractor 8 to the container 6.
It is stored in 7. When the container 67 is filled with the coffee liquid C, press the button 86? : Return, stop supply of coffee liquid C, and open switch 13 at the same time. If you want to enjoy cappuccino coffee, use a container 7 containing coffee liquid C.
After pouring milk into the container 8, the light end 84 of the communication path 70 is connected to the coffee liquid, and when the steam supply push button 85 is pressed, the valve 11 opens and the airtight container 1 and the communication path 7 are communicated. At the same time, the switch 13 is closed and the heating device 3 is energized.Therefore, the push button 85 is kept pressed to reach the boiling state, and the high pressure steam generated in the closed container 1 passes through the communication path 7 to boil the coffee. The coffee liquid is squirted into the liquid and foamed. After foaming, the push button 85 is returned to close the valve 11 and the switch 13 is opened. Also, before extracting the coffee liquid, the container 67 is heated by jetting steam.
If you keep it warm at O, the extracted coffee liquid will not get cold.
It tastes delicious.

Furthermore, when the jm-added coffee is extracted, it protrudes from the cover 22 (・When the filtrate supply push button 57 is pressed, the valve 9 is opened and locked, and the EE in the airtight container 1 is reduced.
At the same time as E, the exhaust pressure inside the sealed container 1 increases) and the passage 4
It is discharged into the water via the auxiliary tank 27. On this occasion,
The exhaust sound is muffled by the muffler 4H62. Then, due to the pressure difference with the sealed container 1 and the head difference of the water a in the water tank 2, the water a in the water tank 2 pushes the valve body 35 of the reverse valve 33 and flows into the sealed container 1.

When the push button 57 is depressed to lock the valve 9 open, the switch 12 is turned on and the heating device 3 is opened.
Power supply to the device is stopped. When the push button 57 is pressed again, the lock is released, the valve 9 is closed, the switch 12 is turned on, and power is supplied to the heating device 3 again. This salary! E j'Thus, the water a at room temperature is heated by the heating device (state A) and kept warm again at 80 to 90'C by the thermoswitch 14 (state B). In the heat retention state, the lamp 99 lights up only while power is being supplied to the heating device 3.

Here, the raw material storage container 73 is again removed from the cup holding frame 68, the coffee grounds are replaced with a new one, and the coffee grounds are attached to the holding frame 68, and coffee can be extracted and steam can be taken out by the same operations as described above. .

Here, the operation of the check valve will be explained in detail. When water is supplied from the water tank 2 to the sealed container 1, the valve body 35 is pressed against the second insertion hole 45 of the valve box 34 by the water pressure due to the head from the water tank 2 and moves downward, and the one-way flow prevention member 47 causes the valve body 35 to move downward. It stops and is sent into the sealed container 1 through the 1st and second communication passages 48 and 49. Next, when the closed container 1 is heated, the water a tends to flow back toward the water tank 2 due to the increase in internal pressure. At this time, the first sliding piece 38 moves into the first insertion hole 29, the second sliding piece 44 moves through the second insertion hole 45, and the valve main body 35 is pushed upward due to the pressure difference. and contacts the first O-ring 42 attached to the first valve holder 36.
This is to prevent +h from L4f.

Next, the safety device will be explained in detail. If the thermoswitch 14 is damaged and cannot operate normally and the closed container 1 is abnormally heated, the thermoswitch 93
is activated to turn off the AC power supply 101. Even if the heating device a is cut off and the temperature of the sealed container 1 becomes sufficiently low, the thermoswitch 93 does not automatically return to its normal state.

If the thermoswitch 93 is also damaged and cannot operate normally and the pressure in the sealed container 1 becomes abnormally high, the safety valve 87 opens and high pressure steam is spouted into the auxiliary tank 27 through the communication passage 38. It looks like this. Therefore, it is safe because steam is not directly discharged outside the vessel.

According to the embodiment described above, the amount of coffee 1 modified C extracted can be freely adjusted by simply pressing the push button 57, and only the desired amount of extraction can be directly supplied into the container 67. Since the hot water is maintained at an appropriate temperature in the closed container 1, the user can enjoy coffee at the appropriate temperature at any time.

In addition, according to the same embodiment, since the valve 11 which can adjustably output steam from the communication path 7 (+if) is installed, steam can be spouted into the coffee liquid C and foamed by a simple operation of pressing the push button 85. Alternatively, it can be heated by ejecting it into the container ``a67'', so you can enjoy a suitable cup of coffee.In addition, it is equipped with a valve 9 for supplying water a from the water tank 2 into the sealed container 1. By simply operating the push button 57, water a and j can be freely supplied into the closed container 1, making handling easier.

In addition, by providing an auxiliary tank 27 connected to the water tank 2 and making the bottom of the auxiliary tank 27 lower than the bottom of the water tank 2, even if the water in the water tank 2 runs out, the bottom of the auxiliary tank 27 Because water remains in the exhaust port 5
No. 5 is always submerged in water and is safe because high-temperature steam does not directly eject.

By providing a communication passage 88 that communicates with the inside of the auxiliary tank, even if the closed container 1 reaches abnormal pressure and the safety valve 87 is opened, the steam will be ejected into the auxiliary tank, so that the steam will not directly harm the human body. Excellent safety as there is no risk of spraying.

By providing the backflow valve 33 in the middle of the communication path 4, even if the pressure in the sealed container 1 becomes high, the water a in the sealed container 1 will not flow back, and a predetermined amount of water a can be heated in the sealed container 1. is possible,
Furthermore, by providing the reinforcing ribs 46 on the plate-shaped valve body 35 of the inverted one-tooth valve 33, the flatness of the round surface of the valve body 35 does not change even if hot water generated by the heating device 3 hits it. The original plane can always be maintained, pressure can always be applied uniformly, and the degree of adhesion can be improved.

In addition, in order to arrange the check valve 33 so that the inflow side is located at the top and the outflow side is located at one side, and to construct the valve body 35 from a material with a specific gravity in the range of 1.05 to 1.15, it is necessary to ensure that it is in a closed container. In addition to being able to supply water to the tank, it is also possible to prevent backflow. By providing the exhaust port 55 of the communication path 5 near the bottom 30 of the water tank 2, the exhaust port 55 can always be immersed in water a. Therefore, when the steam is discharged by operating the valve 11, the steam does not come into direct contact with the human body (excellent safety is achieved, and the sound of steam ejecting underwater can be reduced).

By using the switches 13 that are linked to the two valves 10 and 11, not only can the number of switches be reduced by one, but also the electric circuit can be simplified and costs can be reduced.

By setting the position of the water tank 2 higher than the closed container 1, water a can be supplied from the water tank 2 to the closed container 1 by using the head difference, and therefore there is no need for pumping up.

〔Effect of the invention〕

The present invention includes a water tank, a sealed container, heating means for the sealed container including an electric heating element, a first J passage communicating between the water tank and the sealed container, an extractor having an inlet/outlet, and a sealed container. A second communication path that communicates between the container and the inlet of the extractor, a third communication path that transfers steam from the top of the container, and a first communication path and a second communication path that discharge steam from the top of the container. A switch interlocked with the valve and the third switch connected in series with the heating element.
a second valve provided in the middle of the communication path, a switch that operates in conjunction with the second valve, and a switch connected in series with the switch,
a third valve in which one of the fourth communication passages is provided; a second switch that operates in conjunction with the third valve; and a third valve that is connected in parallel with the switch and is activated by detecting the temperature of the closed container.
It consists of a switch and a simple valve operation (by which you can freely adjust the amount of beverage extracted, making it possible to always produce a freshly made beverage.In addition, it can be extracted directly into a container such as a drinking cup, so it is easy to handle. It has excellent effects such as being simple and economical, and also allowing you to always enjoy a delicious drink with Ji'4'u%.

[Brief explanation of the drawing]

1 to 10 show embodiments of the present invention, in which FIG. 1 is a system diagram, FIG. 2 is an exploded perspective view, FIG. 3 is an overall perspective view, and FIG. 4 is a cross-sectional view. , FIG. 5 is a longitudinal sectional view, FIG. 6 is an exploded perspective view of the reverse valve, and FIG. 7 is a sectional view of the check valve.
Figure 8 is a cross-sectional view of the push button, Figure 9 is an electric circuit diagram, Figure 10 is a graph showing push button operation and airtight container humidity, Figure 11 is a conventional cross-sectional view, and Figure 12 is a conventional electric circuit diagram. be. 1. Sealed container 2. Water tank 3. Heating device 4
,5,6.7...Communication path 8...Extractor 9,10.1
1...Valve 12.13...Switch 14...Thermoswitch 30...Bottom 33...Check valve 34...Valve box 35...
Valve body 46... Reinforcement rib 51... Top 55... Exhaust port 63... Outlet 65... Tip 87... Safety valve
88...Communication path a--Water b a @coffee C.
, Coffee Liquid Patent Applicant: Mamoru Ushiki, Patent Attorney, Toshiba Heat Appliances Co., Ltd. Figure 4 Figure 5 Figure 6 *7

Claims (10)

[Claims] (1) A water tank, a sealed container, a heating means for the sealed container including an electric heating element, a first communication passage communicating between the water tank and the sealed container, an extractor having an entrance and exit, and a sealed container. a second in communication between the container and the inlet of the extractor;
a communicating path, a third communicating path for transferring steam from the top of the container, a fourth communicating path for discharging steam from the top of the container, and a valve connected in series with the heating element and provided in the middle of the second communicating path. a switch that operates in conjunction with this valve; a second valve that is connected in series with the heating element and provided in the middle of the third communication passage; a switch that operates in conjunction with this second valve; and a switch that is connected in series with the switch; A third valve provided in the middle of the fourth communication path, a second switch that operates in conjunction with the third valve, and a third switch that is connected in parallel with the switch and is activated by detecting the temperature of the closed container. A device for extracting coffee, etc., characterized by: (2) The water tank is provided with a partition plate, and includes an auxiliary tank that communicates with the bottom of the water tank and whose bottom is located at a lower position than the bottom of the water tank. Extraction device for coffee, etc. as described. (3) The apparatus for extracting coffee or the like according to claim 1, further comprising a safety valve at the top of the closed container, and a fifth communication passage communicating from the safety valve to an auxiliary tank. (4) The apparatus for brewing coffee or the like according to claim 1, characterized in that a check valve is provided in the middle of the first communicating path to allow water to flow only from the water tank into the closed container. (5) Claim 1, characterized in that the end of the fourth communication passage is provided near the lowest part in the auxiliary tank.
Extraction device for coffee, etc. as described in Section 1. (6) The apparatus for brewing coffee or the like according to claim 1, characterized in that a switch interlocking with the valve and a switch interlocking with the second valve are used together in one switch. (7) The apparatus for brewing coffee or the like according to claim 1, wherein the airtight container is located below the water tank. (8) The coffee extraction device as set forth in claim 1, wherein the valve, the second valve, and the third valve are manually operated. (9) A patent claim characterized in that the check valve is composed of a valve box and a valve body built into the valve box, and is arranged so that the inflow side of the check valve is located upward and the outflow side is located downward. The apparatus for extracting coffee, etc. according to item 4. (10) The coffee extraction device according to claim 9, wherein the valve body is made of a heat-resistant material having a specific gravity in the range of 1.05 to 1.15.