JPS6096219A - 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 The present invention relates to a coffee brewing machine, and more particularly to a high-pressure drip type coffee brewing machine that applies ultrasonic vibration to coffee to increase extraction efficiency.

Vending machines for coffee and juice have been in practical use for a long time, but these machines either store and sell coffee or juice pre-filled in cans or paper bags, or sell coffee or juice in powdered or granulated form. The mainstream is to sell items by pouring cold or hot water into them. Especially in the case of coffee, the taste of the coffee sold by these vending machines was several levels lower than that of the coffee brewed in the original style, and was unpalatable to those accustomed to the coffee brewed in the original style.

The purpose of this invention is to provide a coffee brewing machine that can instantly drip regular coffee in a vending machine, and its features include an upper cylinder equipped with a piston and an ultrasonic vibrating piezoelectric ceramic; A filter paper that moves intermittently over the part, and the extracted amount is ground together with a certain amount of hot water into the upper cylinder arranged so that it can come into liquid-tight contact with the upper surface of the part through the filter paper. Coffee powder is put in, and the piston in the upper cylinder operates to force the coffee extract through the filter paper and into the chamber, and the extracted amount of coffee extract is taken out from the chamber and moves as the upper cylinder separates. Extracted coffee powder is discharged from the upper cylinder together with the filter paper. An embodiment of the coffee brewing machine of the present invention will be described in detail below with reference to the drawings.

As shown in FIGS. 1 and 5, the coffee brewing machine of the present invention has an injection pipe 2 for injecting hot water and coffee powder on the side, an upper piston 3 inside, a heater 4 on the outer periphery, and an O2 on the opening edge. An upper cylinder 1 is provided with a ring-shaped ultrasonic vibrating piezoelectric ceramic A that can be moved up and down, a take-out pipe 7 for extracting coffee extract is provided on the side, and a heater 9 is installed on the outer periphery. and 0 ring 1 on the opening edge
0 is installed so that the opening faces the opening of the upper cylinder 1.
The filter paper 11, which is wider and longer than the cylinder diameter, is attached to the filter paper 11 and is intermittently sent laterally in contact with the O-ring 10 of the lower cylinder by drive rollers 13a to 13d, and the upper cylinder 1 and the upper piston 3 are moved up and down. It is composed of a cam roller 14. The cam roller, upper cylinder 1, and upper piston 3 are related to each other by a link rod.

The coffee brewing machine of the present invention is constructed as described above, and the operation of brewing one cup of coffee using this coffee brewing machine will be explained below with reference to the drawings.

1 and 6 are in a standby state for coffee extraction. Even in this state, the heater 4.9 is energized and the upper cylinder 1 and the extraction amount are controlled by the upper piston 3 and the upper The cylinder 1 is in a position where it receives one arm from the cam grooves 15, 16 of the cam roller 14, and the upper cylinder 1 and the upper piston 3 are at the upper limit position of their operating range.

Although not shown, for example, when a coin is inserted into a vending machine, the cam low 514 starts rotating in response to a command that detects this, and from the state shown in FIGS. 1 and 6 in the region a to b, the state shown in FIG. Before reaching the state shown in FIG.
As a result, the amount of extraction decreases rapidly, and both openings come into pressure contact via the portion 6 and the filter paper 11. When the O-ring 5.10 is made watertight by pressure welding, the amount of hot water needed to brew one cup of hot water and one cup of coffee, which had been previously boiled and stored elsewhere, will be released. Coffee powder, sugar and milk (in this case sugar and milk can be adjusted in quantity as desired) are delivered into the upper cylinder 1 through the injection pipe 2.

From this state, the upper piston 3 moves from b to C of the cam roller 14.
The upper piston 3 is gradually lowered by the same stroke by the cam groove 15 in the upper cylinder 1, and the hot water containing coffee powder, sugar, etc. in the upper cylinder 1 is sent through the filter paper 11 to the part 6 side, and the coffee grounds 18 are The coffee extract 19 is blocked by the filter paper 11 and remains on the upper cylinder 1 side, and the extracted amount of the coffee extract 19 is poured into the paper cup 20 through the part 6. A lead wire 21a is connected to an ultrasonic vibrating piezoelectric ceramic A made of an oxide ferroelectric material 4-
By applying an ultrasonic excitation voltage of about 50 to 150 KHz (not shown) through 21b and forcing the hot water containing coffee powder to vibrate, coffee can be extracted efficiently.

Next, in the cam groove 15.16 in the c-d area of the cam roller 14, the upper piston 3 descends as shown in FIGS. Coffee extract 19 from the take-out pipe 7 of 6
The paper cup 2 shown by the broken line is taken out below this tube.
Pour into 0.

Finally, as shown in FIGS. 4 and 9, the upper cylinder 1 and the upper piston 3 rise together in the cam grooves 15 and 16 in areas C to d of the cam roller 14, and when the upper cylinders 1 are separated by a certain amount, the pinch roller 13a to 13d begin to rotate and feed out a certain amount of the filter paper 11 from the holder 12, and carry out and remove the coffee grounds 18 remaining on the filter paper out of the upper cylinder 1.
In the d-a region of the cam roller 14, it returns to the standby state shown in FIGS. 1 and 6.

Note that the present invention can also be used as a black tea and green tea extractor.

As described above, the present invention includes an upper cylinder containing a piston and an ultrasonic vibrating piezoelectric ceramic, and a filter paper that moves intermittently on the upper surface of the upper cylinder to measure the extraction amount. A fixed amount of hot water and ground coffee powder are placed in the upper cylinder, which is arranged so as to be in liquid-tight contact with the upper cylinder, and the coffee extract is passed through the filter paper by the action of the piston in the upper cylinder. By force-feeding the coffee extract to the upper cylinder, the extracted amount of coffee extract is taken out from a portion, and the extracted coffee powder is discharged from the upper cylinder along with the filter paper that moves as the upper cylinder separates, so it is a regular product even in vending machines. Coffee can be extracted each time it is sold, and in particular, during extraction, ultrasonic vibrations are applied to the hot water containing coffee powder using an ultrasonic vibration piezoelectric ceramic to forcefully stir the coffee, making it possible to produce delicious coffee just like brewed coffee in an extremely short amount of time. This method has advantages such as a simple configuration and a simple operation sequence.

[Brief explanation of drawings]

Each of the figures shows an embodiment of the present invention. Figures 1 to 4 are cross-sectional views of the coffee brewing machine showing the movements of the upper cylinder and upper piston during the coffee extraction process, and Figure 5 is a sectional view of the coffee brewing machine. The developed view of the cam roller and FIGS. 6 to 9 are explanatory views of the operation of the coffee brewing machine, showing the relationship between the cam roller, the upper cylinder, and the upper piston. DESCRIPTION OF SYMBOLS 1... Upper cylinder, 2... Injection pipe, 3... Upper piston, 4, 9... Heater, 5, 10... O-ring, 7... Removal pipe, 11... 1M, 12...Holder, 13a-13d...Pinch roller, 14...
Cam roller, 15.16...Cam groove, 18...Coffee grounds, 19...Coffee extract, 20...Cup, A...Ultrasonic vibration piezoelectric ceramic. Patent applicant: Japan Automatic Sales Co., Ltd. 1WJ Figure 6 Figure 7

Claims (1)

[Claims] Equipped with an upper cylinder containing a piston and an ultrasonic vibrating piezoelectric ceramic, and a filter paper that moves intermittently over the part to determine the amount of extraction.
The amount of coffee extracted through the filter paper is determined by the action of a piston in the upper cylinder. By force-feeding the coffee extract into the chamber through the filter paper, the extracted amount of coffee extract is taken out from the chamber, and the extracted coffee powder is discharged to the outside of the upper cylinder along with the filter paper that moves as the upper cylinder separates. A coffee brewing machine characterized by: