JPH082332B2 - Coffee extractor - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention is for filtering and extracting coffee powder called regular coffee through a filter paper by pouring hot water, and is installed especially in a place intended for a large number of people. It relates to a coffee extractor used.

(Prior Art) As described above, a device that has been conventionally known as a device for filtering and extracting coffee for drinking by a large number of people is a tank having a heat retaining function for a large amount of coffee that has been previously filtered and extracted through filter paper. The hot water is stored inside or in an adiabatic tank and is discharged and supplied from the tank according to demand.

(Problems to be solved by the invention) However, in the case of the above-mentioned conventional machine, since it is not filtered and extracted every time it is drunk, but it is discharged and supplied from the tank in advance, so that the temperature However, it was unavoidable that the aroma and flavor peculiar to coffee deteriorated with the passage of time, and it was not preferable in terms of taste. In particular, if there is a variation in the time length from the time of filtration and extraction to the time of actually drinking, there is the inconvenience that the scent and flavor change each time.

In addition, even when the amount of water stored in the tank is below a certain level, if the coffee that has been newly filtered and extracted is replenished in the form of addition, it will mix with the coffee remaining in the tank, and such a state will continue to occur. When repeated, the loss of aroma and flavor occurs more rapidly and significantly. Therefore, waiting until all the coffee in the tank is consumed, washing the inside of the tank once, and then storing the newly filtered and extracted coffee, if it is handled in a so-called batch type, it requires a great deal of management time when using it. There's a problem.

The present invention has been made in view of the above circumstances, a so-called freshly brewed coffee can be arbitrarily consumed without degrading the original aroma and flavor of coffee, and a coffee extractor that is easy to handle and manage The purpose is to provide.

(Means for Solving the Problems) In order to achieve the above object, a coffee extractor according to the present invention has a female-forming member among a pair of male and female forming members capable of forming a sheet-shaped filter paper in a funnel shape. Is rotatably driven along a fixed path, and the male forming member, the coffee grounds storage tank, the hot water storage tank, and the reversing mechanism of the female forming member are appropriately spaced on the rotation path of the female forming member. And, with the intermittent rotation of the female forming member, the forming operation by the male forming member, the dropping and supplying operation of the coffee powder from the coffee powder tank, and the pouring from the hot water storage tank. It is characterized in that it is provided with a sequence control mechanism for sequentially and continuously performing the extracting operation and the operation of discharging the extracted filter paper by the inversion mechanism.

(Operation) In the automatic coffee brewing machine according to the present invention, the sheet-shaped filter paper is placed and loaded on the female forming member that is intermittently rotated, so that the male forming member is first placed on the female forming member. The sheet-shaped filter paper is formed into a funnel shape by lowering and fitting it, and then a predetermined amount of coffee powder is formed into a funnel shape from the coffee powder tank with the formed filter paper rotating and moving by a unit amount and stopped. It is dropped into the filter paper and supplied. Subsequently, the funnel-shaped molded filter paper containing the coffee powder reaches the bottom of the pouring port of the hot water storage tank by rotating the female forming member by a unit amount, and the hot water of the hot water storage tank is opened at this time, for example, for a time specified by a timer. A pouring port with a valve is used to dispense approximately one person into the formed filter paper, whereby coffee liquid containing coffee powder extract is extracted through the filter paper. After this, the female forming member is again rotated by a unit amount to reach the reversing mechanism, the female forming member is inverted, and along with this, the extracted filter paper is discharged.

After such a series of steps, the female forming member returns to the original position, that is, the loading position of the filter paper sheet, and the same stroke operation as above is repeated.

It should be noted that, although the above description is the sequential operation for coffee extraction accompanying one rotation movement of one female forming member, in practice, a plurality of female forming members are integrally rotated intermittently. Therefore, the coffee liquid is immediately extracted by loading the sheet filter paper.

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is an external perspective view of an automatic coffee brewing machine according to the present invention.

In the figure, (1) is a box-shaped casing that can be installed and installed on a desk or the like, and a swingable door (2) is attached to the front surface thereof, and a front side surface and a side surface are provided at one corner of the front surface. Recessed portions (3) that open to the respective sides are formed, and by inserting a coffee cup (4) or the like into the recessed portions (3), the extracted coffee liquid can be received.

FIG. 2 shows the state in which the opening / closing door (2) is opened and the inside of the box-shaped casing (1) is viewed from the front, and FIG. 3 is a schematic plan view showing the overall arrangement. In FIG. Is a filter paper forming device capable of forming a sheet-like filter paper into a funnel shape,
It consists of a pair of male and female molding members (6) and (7) arranged in a vertical positional relationship. Only one male forming member (6) of this filter paper forming device (5) is provided at a fixed position in the box-shaped casing (1) so as to be vertically movable via a supporting member (8) and at the same time, a male forming member is formed. The shaped member (7) is circumferentially
The three female forming members (7) are arranged with a rotation angle interval of 120 degrees, and these three female forming members (7) have a support shaft (7A) protruding inward from the inner surface of the peripheral surface of the box-shaped casing (1). ), The rotating arm (1
The roller (11), which is supported by being rotatably inserted in the (0) and is attached to the outer peripheral portion of the female forming member (7), has the above-mentioned motor (9) in the box-shaped casing (1).
It is configured to be rotationally driven along a fixed path by the rotation of the motor (9) while being mounted on an annular guide rail (12) fixedly formed concentrically with the rotating shaft of the. (13) is a tank for storing the coffee grounds (A), which, as shown in FIG. 4, supports a shaftless spiral rotation delivery tool (14) at its bottom and has its delivery direction end. A valve (16) that is urged to close by its own weight is attached to the coffee drop port (15) of this part, and the drop port (15) with the valve (16) is the female forming member in the filter paper molding device (5). On the rotation path of (7), the tank (13) is located at a position separated by a rotation center angle of 120 degrees with respect to the position of the male forming member (6), and the tank (13) is a box-shaped casing (1). It is fixedly placed inside.

(17) is a hot water storage tank, which has an electric heater inside and is configured so that the hot water temperature can be constantly controlled based on the temperature detection signal from the hot water temperature sensor. It is equipped with a float switch to hold it. Such a hot water storage tank (17) is placed in the box-shaped casing (1), and its pouring port is located on the rotation path of the female forming member (7) in the filter paper forming device (5) so that the tank (3) The female forming member (7) is fixedly arranged at a rotation center angle of 120 degrees with respect to the drop port (15), and is located just below the pouring port of the hot water storage tank (17). As shown in FIG. 5, a partition plate (removably insertable and holding a funnel-shaped external spout (18) for discharging the extracted coffee toward the recessed portion (3) described below is inserted into the casing portion under the rotation path of (). 19) is fixed and connected in a substantially horizontal position.

(20) is a reversing mechanism of the female forming member (7) described above,
This removes a portion of the guide rail (12) between the position of the funnel-shaped external spout (18) and the position of the male forming member (6) over a range of about 65 degrees in the rotation center angle. As a result, when the roller (11) of the female forming member (7) that rotates and reaches the notch (21), the female forming member (7)
Is rotated 180 degrees around a substantially radial axial center (a) formed by the rotary arm (10) and a support shaft (7A) fitted to the rotary arm (10), that is, the opening of the female forming member (7) faces downward. It is constructed so that the filter paper from which coffee has been extracted is discharged by reversing it so that it is open, and at the beginning of the guide rail (12) following this notch (21), the reversed female forming member (7) is formed. An inversion return tool (22) for contacting and rotating it around the axis (a) to restore the original posture is provided.
Further, a receiver (23) for receiving the extracted filter paper and the coffee grounds discharged from the inverted female forming member (7) is detachably provided at a position just below the cutout portion (21). .

Reference numeral (24) is a sheet-shaped filter paper feeding device, which is formed in the opening / closing door (2) at a location corresponding to the installation location of the male forming member (6) in the box-shaped casing (1). A rectangular filter paper holding plate (25) that is slidable inward and outward through the hole (2A) is provided, and a hole having a diameter slightly smaller than that of the circular sheet filter paper (26) is provided in the approximate center of the filter paper holding plate (25). (25A) is formed, and the holding plate (25) is directed from the outside of the opening / closing door (2) to the inside while receiving and supporting the sheet-like filter paper (26) at the peripheral portion of the hole (25A). The sheet-like filter paper (26) can be loaded directly above the female forming member (7) in the forming device (5) by pushing and sliding it.

6 and 7 show a specific structure of the molding device (5). In FIG. 6, (7a) is a shape-retaining frame having a substantially oval shape in plan view, which extends along the periphery of the shape-retaining frame (7a). , A plurality of wire rods (7b) arranged at appropriate intervals in the circumferential direction, are bent at an angle so that the diameter becomes gradually smaller toward the lower side, and the lower end portions of these bent wire rods (7b). Lattice bottom plate (7c)
A substantially inverted frustoconical peripheral wall is formed by being fixed to the peripheral wall, and a plurality of wire rods (7b) forming this peripheral wall are each wound with a thin coil (7d). Bottomless cylindrical frame (7e) with shaft (7A) and roller (11)
The female shaped member (7) is formed by fitting and holding the female shaped member (7). On the other hand, on the outer peripheral surface of the male forming member (6), adjacent wire rods (7b) when fitted to the female forming member (7).
(7b) A plurality of ridges (6a) that protrude and deform outwardly in a zigzag shape in a plan view of the peripheral wall portion of the filter paper (26) that has entered the gap between and deformed into a substantially inverted conical shape. It is formed so as to integrally project.

In the equipment provided with the above respective components, the molding device (5) is obtained by intermittently rotating the male forming member (7) through the motor (9) at intervals of a rotation center angle of 120 degrees. Forming operation of the male forming member (6) in
The set amount of coffee powder supplied from the coffee powder tank (12) is continuously supplied, the pouring / extracting operation from the hot water storage tank (17) and the discharging operation of the extracted filter paper by the reversing mechanism (20) are successively performed. Sequence control mechanism (27)
In the box-shaped casing (1) and on the inner surface of the opening / closing door (2).

Next, the operation of the automatic coffee brewing machine configured as described above will be briefly described.

With the circular sheet-shaped filter paper (26) received and supported on the filter paper holding plate (25) concentrically with the hole (25A), the filter paper holding plate (25) is provided from the outside of the opening / closing door (2) to the casing ( 1)
The sheet-shaped filter paper (26) is loaded in a position directly above the male forming member (7) in the forming device (5) by pushing in and sliding operation.

In this state, the male forming member (6) in the forming device (5) is lowered and fitted into the female forming member (7) so that the sheet-shaped filter paper (26) is removed from the holding plate (25) by the female forming member. While being transferred to the member (7) side, it is formed into an extraction posture in which the shape is funnel-shaped and the peripheral wall portion is zigzag-shaped.

Then, the female forming member (7) is rotated by 12 at its rotation center angle.
By rotating and moving the molding member (7) within a range of 0 degree, the molding member (7) is conveyed to a position immediately below the dropping port (15) in the coffee powder tank (13) and stopped. In this stopped state, the spiral rotation delivery tool (14) at the bottom of the tank (13) rotates for a time preset by a timer, and a predetermined amount of coffee powder is shaped like a funnel (26). It is dropped and supplied.

Then, the female forming member (7) is rotated by 12 at its rotation center angle.
By rotationally moving within a range of 0 degree, the forming member (7) is conveyed to a position directly below the pouring port of the hot water storage tank (17) and stopped. In this stopped state, hot water in the hot water storage tank (17) is extracted by a preset amount. As a result, the coffee liquor containing the coffee grounds extract is filtered (2
6) is filtered and extracted, and the extracted coffee liquid passes through the external extraction port (18) and is recessed (3) outside the casing (1).
And is received by the coffee cup (4) or the like inserted into the recessed portion (3).

Next, the female forming member (7) is again rotated and moved within the range of 120 degrees at the rotation center angle to return to the position directly below the male forming member (6) which is the home position. However, in the middle of this return movement, the female forming member (7) is inverted by 180 degrees around the axis (a) by the action of the above-mentioned reversing mechanism (20), and with the residue of the coffee extracted from the extract. After discharging the used filter paper toward the inside of the receiver (23), it is returned to the original posture by rotation and reaches a position directly below the male forming member (6).

When the filter paper molding device (5) having the structure as shown in the above embodiment is used, the extraction time can be shortened and it is more convenient in practice, but the structure of the above embodiment is not always necessary. Is not limited.

Further, as the reversing mechanism (20), the one shown in the above embodiment is structurally the simplest, but is not limited to this.

Further, when the opening / closing door (2) is opened, an interlock is provided so as to stop the operation of the entire device, so that safety at the time of maintenance such as inspection, repair and cleaning is ensured.

Furthermore, the hot water storage tank (17) may be of a type that replenishes hot water that has been boiled externally, but if it is of a type with an automatic water boiling function, device management is easier and more practical.

(Effects of the Invention) As apparent from the above description, according to the present invention,
When you want to drink coffee, you just need to send a sheet of filter paper to form the filter paper → coffee powder drop supply →
The operation for obtaining strained coffee such as pouring / extracting → discharging the extracted filter paper can be automatically and sequentially performed to extract coffee equivalent to one person in real time. Therefore, coffee with a good scent and flavor can always be drunk.

Moreover, it is possible to continuously extract coffee to be used by a large number of people only by performing simple management that can adopt an automatic management system such as residual quantity management in the coffee grounds tank, water quantity management in the hot water storage tank, and temperature management. Such a practical effect.

[Brief description of drawings]

FIG. 1 is an external perspective view of a coffee extractor according to the present invention,
2 is a front view of the door in an open state, FIG. 3 is a schematic plan view of the whole, FIG. 4 is a vertical cross-sectional view of a coffee grounds tank, FIG. 5 is a vertical cross-sectional view of essential parts, FIG. 6 and FIG. The drawings are an enlarged perspective view and an enlarged vertical sectional view of the filter paper molding apparatus. (1) …… Box casing, (2) …… Opening / closing door, (5)
...... Filter paper forming device, (6) …… Male forming member, (7) ・ ・ ・
… Female forming member, (12) …… Guide rail, (13) ……
Coffee powder tank, (17) …… Hot water storage tank, (18) ……
External spout, (20) …… Inversion mechanism, (21) …… Rail notch, (23) …… Slag receiver, (24) …… Filter paper feeder, (27) …… Sequence control mechanism.

Claims (3)

[Claims] 1. A pair of male and female forming members capable of forming a sheet-shaped filter paper in a funnel shape, wherein a female forming member is rotatably driven along a fixed path, and on the rotating path of the female forming member. The male forming member, the coffee grounds storage tank, the hot water storage tank, and the reversing mechanism for the female forming member are arranged at appropriate intervals, and with the intermittent rotation of the female forming member, The molding operation by the male forming member, the dropping and supplying operation of the coffee powder from the coffee powder tank, the pouring / extracting operation from the hot water storage tank and the discharging operation of the extracted filter paper by the reversing mechanism are sequentially performed. A coffee brewing machine having a sequence control mechanism. 2. The whole is housed and arranged in a box-shaped casing with an opening / closing door, and an external pouring outlet for brewed coffee is provided in a casing portion of the hot water storage tank immediately below the pouring port, and a location where the male forming member is installed. The coffee brewing machine according to claim 1, wherein filter paper supply devices for loading the sheet filter paper from the outside of the casing onto the female forming member are provided at corresponding positions. 3. The coffee brewing machine according to claim 1, wherein the hot water storage tank has an automatic water boiling function.