JP3063579B2 - Coffee extractor - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to the art of coffee extractors.

[0002]

2. Description of the Related Art A conventional general drip coffee extractor will be described with reference to FIG.

[0003] In FIG. 4, water put in a water container 51 is guided to a heating water pipe 52 and enters a rising pipe 53. At this time, the water level in the riser 53 is the same as the water level in the water container 51 by the siphon principle.

When the power is turned on in this state, the heating water pipe 52
Is heated by the heating element 54 disposed near the heating water pipe 52.
The water inside is heated, generating steam. The high-temperature water in the heating water pipe 52 is pushed by the rising pipe 53 by the generated steam pressure, rises in the rising pipe 53, and is discharged from the other end.

When the water in the heating water pipe 52 is discharged from the rising water pipe 53, the pressure in the heating water pipe 52 is reduced. Then, the water in the water container 51 is guided into the heating water pipe 52 and is heated again. You. This operation is continuously performed, and all the water in the water container 51 becomes high-temperature water and is discharged from the rising pipe 53.

Reference numeral 55 denotes a place where coffee powder is put inside,
In a filtration chamber for extracting coffee by pouring the high-temperature water discharged from 3, the coffee liquid extracted here is stored in a water storage container 56. 57 is a water container 51
A check valve provided between the heating water pipe 52 and the heating water pipe 52 prevents the heated high-temperature water in the heating water pipe 52 from flowing back into the water container 51.

[0007]

However, in the configuration of the above-mentioned conventional coffee extractor, when water is poured into the water container 51, the water in the water rising pipe 53 reaches the same position as the water level in the water container 51 by the siphon principle. Get in. This riser 53
The water inside is not heated by the heating element 54 and is poured into the filtration chamber 55 in a cold state, so that the coffee component is not sufficiently extracted from the coffee powder and the temperature of the finished coffee is low. there were. (M in FIG. 4
The portion of water indicated by is not heated and is poured cold. )
The present invention solves the above-mentioned conventional problems. By pouring high-temperature water into coffee grounds from the initial stage of extraction, the coffee components are sufficiently extracted, and the temperature of the completed coffee is also high. The aim is to provide delicious coffee.

[0008]

[MEANS FOR SOLVING THE PROBLEMS] To achieve the above object
One means of the present invention includes a water container, a heated water tube for heating water in the water container, a water rising tube for guiding heated water upward, and a filtration chamber for extracting coffee, The water container has an upper opening, a first water container provided with a valve body A at the bottom, and a water container disposed below the first water container in a watertight manner.
Becomes a vent tube communicating with the atmosphere from the second water containers respectively provided, further have a lid for closing the upper opening of the first water container watertight, the bottom of the second water container Established in
A valve body B is provided at a portion of the water inlet B, and the valve body A and the valve
The body B is configured to operate in conjunction with each other.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claim 1 is a water container.
And a heating water pipe for heating water in the water container,
A riser that guides the heated water up and coffee is extracted
And a filtration chamber, wherein the water container is open at the top and at the bottom.
A first water container provided with a valve body A, and a first water container
Air vent pipes that are provided water-tight and communicate with the atmosphere.
And a second water container provided with the first water container.
A lid for closing the upper opening in a watertight manner;
Valve body B is installed at the part of the water outlet B provided at the bottom of the water container
The valve element A and the valve element B operate in conjunction with each other.
Obtained by the structure, filled with water to the first water container, watertight manner to seal the top opening, then the valve body A of the first water container Set by the water container in the housing is open at the lid Then, the water in the first water container flows into the second water container, and the flow of water stops in a state where the water outlet A at the bottom of the first water container is closed with water. At this time, the water level of the rising pipe is the same as the water level of the second water container, and therefore, the amount of water extracted without being heated by the heating element can be extremely reduced. Also, the first
A valve element A disposed in a water container, and a valve element A disposed in a second water container
The valve body B operates in conjunction with the
It can prevent problems such as water leakage due to tomis
You.

[0010] The invention according to claim 2 provides a water container and a water container.
A heated water pipe for heating the water in the water container,
Riser pipe to guide the water up and a filter room to extract coffee
The water container is open at the top and a valve body A is provided at the bottom.
A first water container and a lower water container disposed below the first water container;
The water outlet B provided at the bottom and the ventilation pipe communicating with the atmosphere
A second water container, a first water container and a second water volume
A communication pipe for communicating a vessel, and above the first water container.
A first water container having a lid for watertightly closing an opening of the first water container
Umbrella is provided on the upper surface of the communication pipe that communicates with the second water container
By doing so , water is poured into the first water container, the upper opening is hermetically sealed with a lid, and then the water container is set in the housing to open the valve element A of the first water container, The water in the first water container flows into the second water container, and the water flows in a state in which the lower end of the communication pipe that connects the first water container and the second water container is closed with water. Stops. At this time, the water level of the rising pipe is the same as the water level of the second water container, and therefore, the amount of water extracted without being heated by the heating element can be extremely reduced. In addition, the first water container and the second water container are communicated.
Since the umbrella is provided on the upper surface of the communication pipe, the first water volume
When the water is filled into the vessel, it is accidentally inserted into the second water container from the communication pipe.
It can be prevented from entering.

According to a third aspect of the present invention , a first water container is provided.
The lid that closes the upper opening of the second container in a watertight manner is a second water container.
It is configured to cover the tip of the ventilation pipe arranged in
A coffee extractor according to claim 1 or 2.
Even when storing the housing, dust and dirt in the ventilation pipe
Dust can be prevented from entering.

[0012] The operation of the present invention in a coffee extractor can be known from the operation of the invention according to each claim.
Then, specific embodiments of the claimed invention will be described by the following examples.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS. Note that the present invention is not limited to the present embodiment.

In FIG. 1, reference numeral 1 denotes a water container which is detachably mounted on a housing 2. The water container 1 has an opening at an upper side and a first water outlet A4 which is opened and closed by a valve body A3 at the bottom. Water container 5 and a second water container 6 disposed below the first water container 5 in a watertight manner. A side wall of the second water container 6 has a ventilation pipe communicating with the atmosphere. 7 are provided. Note that the valve element A3 provided in the first water container 5 is
Is removed, the urging force of the spring A8
The valve shaft A10 to which the valve element A3 is fixed is pushed upward by the push rod 9 provided on the housing 2 only when the valve body A3 is pressed against the flowing water port A4 and is set in the housing 2. As a result, the valve element A3 A gap is generated apart from the mouth A4.

The tip of the ventilation pipe 7 provided on the side wall of the second water container 6 is disposed at a position higher than at least the maximum water level of the first water container 5.

Reference numeral 11 denotes a lid for closing the upper opening of the first water container 5 in a watertight manner. A part of the lid 11 covers the upper end of the ventilation pipe 7. Have been.

The check valve 1 is connected to the water container 1 and has a check valve 1 therein.
2 is provided, and the other end of the connection tube 13 is connected to a heating water pipe 15 provided adjacent to the heating body 14. Further, a rising pipe 16 arranged upward is connected to the heating water pipe 15, and a filtering chamber 17 for accommodating coffee powder and a filtering chamber 17 below the outlet side of the rising pipe 16 for accommodating coffee powder are extracted. A water storage container 18 for storing the coffee liquid is provided.

In the above configuration, if the water container 1 is removed and water is poured into the first water container 5, the water stays in the first water container 5 by the action of the valve element A3. After that, the opening of the first water container 5 is hermetically sealed with the lid 11 and the water container 1 is set in the housing 2, and the push rod 9 provided in the housing 2 connects the valve shaft A 10 to the valve shaft A 10. When the water is pushed up, it moves above the valve element A3 to be in an open state, and the water in the first water container 5 flows into the second water container 6. And
When the water in the second water container 6 blocks the water outlet A4 provided in the first water container 5, the inner pressure of the second water container 6 communicating with the atmosphere and the lid 11 watertight. The first blocked
The internal pressure in the water container 5 becomes equilibrium, and the flow of water stops.

On the other hand, the height of the water in the riser 16 at this time is obviously the same as the water level in the second water container 6 by the siphon principle.

In this state, when the heating element 14 is energized, the temperature of the heating water pipe 15 becomes high due to the heat generation of the heating element 14, the water in the heating water pipe 15 is heated, and a vapor pressure is generated. Due to the generated steam pressure, the high-temperature water in the heating water pipe 15 is removed from the rising pipe 1
6 and rises up the riser pipe 16 and is discharged from the other end.

The check valve 12 is for preventing the high-temperature water in the heating water pipe 15 from flowing back into the second water container 6 due to the steam pressure.

When the water in the heating water pipe 15 is discharged from the rising pipe 16, the pressure in the heating water pipe 15 decreases.
In the water container 6 is guided into the heated water pipe 15, the water level in the second water container 6 decreases, and a gap is formed between the water container 6 and the flowing water port A4 provided in the first water container 6. Air enters from the gap and the water in the first water container 6 flows into the second water container 6 until the water inlet A4 is closed.

This operation is continuously performed, and the water in the second water container 6 is sequentially sent to the heating water pipe 15, becomes high-temperature water, rises in the water rising pipe 16, and is poured into the filtration chamber 17. At the same time, the water in the first water container 5 is also sequentially supplied into the second water container 6.

The reason why the distal end of the ventilation pipe 7 provided on the side wall of the second water container 6 is disposed at least above the maximum water level of the first water container 5. This is to prevent water from leaking out of the water container 1 even if the first water container 5 has poor water tightness.

The second water container 6 is formed by a part of the lid 11.
The reason for covering the distal end of the ventilation pipe 7 disposed in the housing 2 is to prevent entry of dust and dirt into the ventilation pipe 7 even when the housing 2 is stored.

FIG. 2 shows a structure in which a valve body B19 is attached to the second water container 6, and a valve body B1 attached to a valve shaft B20.
9 is a water outlet B22 by the urging force of the spring B21.
And is pushed up above the valve shaft B20 by the push rod 9 provided on the housing 2 only when set in the housing 2, and as a result, the valve body B20 is separated from the flowing water port B22 and a gap is generated. Further, the valve shaft B20 is the same as the valve shaft A1 described above.
0, and when the water container 1 is detached, the respective water outlets A4 and B22 are closed.
When the water container 1 is set in the housing 2, both the valve shafts A10 and B20 move upward to release the flowing water ports A4 and B22.

If the valve body B19 is attached to the second water container 6 constituting the water container 1 as described above, the water container is kept in a state where there is residual water in the second water container during coffee extraction. Even when removed from the body, water does not leak because the valve body B19 closes the water outlet B22.

Further, since the valve body A3 and the valve body B19 operate in conjunction with each other, it is possible to prevent a problem such as water leakage due to an incorrect setting of the water container.

In FIG. 3, reference numeral 31 denotes a water container which is detachably mounted on a housing 32. The water container 31 has an opening at the top and a bottom having a flowing water port A34 opened and closed by a valve body A33. A water container 35, and a second water container 36 disposed in a watertight manner below the first water container 35,
The ventilation pipe 3 communicating with the atmosphere is provided on the side wall of the second water container 36.
7 are provided.

Reference numeral 38 denotes a communication pipe which connects the first water container 35 and the second water container 36. The upper opening of the communication pipe 38 is higher than the position of the maximum water volume of the first water container 35. And an umbrella body 39 is attached to the upper end.

Numeral 40 is a lid for closing the upper opening of the first water container 35 in a watertight manner, 41 is a heating element,
42 is a heated water pipe, 43 is a riser pipe, and 44 is a filtration chamber.

In this configuration, the water container 31 is removed,
When water is poured into the first water container 35, the water stays in the first water container 35 by the action of the valve element A33. Thereafter, the opening of the first water container 35 is hermetically sealed with the lid 40, and when the water container 31 is set in the housing 32, the valve body A33 moves upward to be in the open state, and the first container is opened.
The water in the water container 35 flows into the second water container 36 at the same time as the air enters from the lower end of the communication pipe 38, and the water in the second water container 36 is moved to the lower end of the communication pipe 38. When air enters from the portion and the water in the second water container 36 closes the lower end portion of the communication pipe 38, the inner pressure of the second water container 36 communicating with the atmosphere and the lid 40 are watertight. The internal pressure in the closed first water container 35 becomes an equilibrium state,
Water flow stops.

In this state, when the heating element 41 is energized, a series of operations is continued, and the water in the second water container 36 is sequentially sent to the heating water pipe 42 to become high-temperature water and flow through the rising pipe 43. As soon as it rises and is poured into the filtration chamber 44, the second water container 36
When the water level in the inside falls, a gap is generated at the lower end surface of the communication pipe 38, air enters from this portion, and the first water container 35
The water inside is also sequentially supplied into the second water container 36.

The water in the first water container 5 and the air in the first water container 5 shown in FIGS. 1 and 2 are simultaneously exchanged in the gap of the valve body A3, whereas the water shown in FIG. Since the air flows out of the body A33 and the air enters through the communication pipe 38, the exchange of water and air is performed smoothly, and the degree of freedom of the shape of the valve body A33 increases.

Since an umbrella body 39 is provided in the upper opening of the communication pipe 38, when water is poured into the first water container 35, it is prevented that the water is erroneously put into the communication pipe 38. be able to.

[0036]

As apparent from the above description, according to the present invention, more invention in the coffee extractor, the water level in the riser pipe when setting the water container to the housing is located at the water level and the position of the second water container Therefore, the amount of water extracted without being heated by the heating element can be kept extremely small, so that the coffee extraction efficiency can be increased and a high-temperature delicious coffee can be obtained. In addition, water leakage due to incorrect setting of the water container
This can prevent such problems.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a main part of a coffee extractor according to an embodiment of the present invention.

FIG. 2 is a longitudinal sectional view of a main part of a coffee extractor according to another embodiment of the present invention.

FIG. 3 is a longitudinal sectional view of a main part of a coffee extractor according to still another embodiment of the present invention.

FIG. 4 is a longitudinal sectional view of a main part of a conventional coffee extractor.

[Explanation of symbols]

 Reference Signs List 1 water container 3 valve body A 4 flowing water port A 5 first water container 6 second water container 7 ventilation pipe 9 push rod 11 lid body 12 check valve 15 heating water pipe 16 rising pipe 17 filtration chamber 19 valve body B 22 running water Mouth B 31 Water container 33 Valve element A 35 First water container 36 Second water container 37 Ventilation pipe 38 Communication pipe 39 Umbrella body 40 Lid 42 Heated water pipe 43 Water pipe 44 Filtration chamber

Claims (3)

(57) [Claims] 1. A water container, comprising a heated water pipe for heating water in the water container, a rising pipe for guiding the heated water upward, and a filtration chamber for extracting coffee, wherein the water container is A first water container having an upper opening and a bottom provided with a valve element A, and a second water container which is provided below the first water container in a watertight manner and has a ventilation pipe communicating with the atmosphere. made from the container, further have a lid for closing the upper opening of the first water container watertightly, provided in the bottom portion of the second water container flow
A valve body B is provided at a water port B, and the valve body A and the valve
A coffee extractor that works in conjunction with the body B. 2. A water container, a heating water tube for heating water in the water container, a water rising tube for guiding the heated water upward, and a filtration chamber for extracting coffee, the water container comprising: A first water container having an upper opening and a valve body A provided at the bottom, and a flowing water port B provided below the first water container and provided at the bottom.
And a second water container provided with a ventilation pipe communicating with the atmosphere, and a communication pipe communicating the first water container and the second water container , respectively.
Have, have a lid for closing the upper opening of the first water container watertight, through communicating the first water vessel and the second water container
Coffee extractor with an umbrella placed on the top of the communication pipe . 3. An upper opening of the first water container is closed in a watertight manner.
The lid to be closed is a tip of a vent pipe provided in the second water container.
The coffee extractor according to claim 1 or 2, which is configured to cover the portion .