JPS63154115A - Electric coffee brewer - 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 Field of the Invention The present invention relates to an electric coffee brewer capable of grinding coffee beans and automatically extracting coffee.

BACKGROUND OF THE INVENTION In general, electric coffee boilers that have the function of grinding coffee beans are in demand for equipment that is easier to operate, allows users to drink coffee without losing its flavor, and can ensure safety in all operating patterns. It was.

For this reason, traditional electric coffee boilers
For example, as shown in FIG. 6 or FIG. 6, there is a system that automatically extracts coffee immediately after grinding coffee beans.

Problems to be Solved by the Invention In the above-mentioned conventional electric coffee boiler, if the coffee bean grinding section and the extraction section are performed at the same location 101 as shown in FIG. 10
3, fine powder of coffee beans is mixed into the extract, making it cloudy and having a bad texture.Furthermore, the mesh filter 103 is clogged with coffee powder residue, making cleaning difficult after use. There were some problems. In addition, a grinding section 104 and an extraction section 105 shown in Fig. 6 are arranged side by side to grind coffee beans, transfer the coffee powder to the extraction section sequentially by centrifugal force, and after the transfer is completed, extraction is performed automatically. If this is the case, fine coffee powder will adhere to the grinding section 104 and the inner surface of the lid 106 covering the grinding and extraction section due to static electricity, resulting in unextracted coffee powder, which is uneconomical.
Furthermore, there is a problem in that there are many parts that need to be cleaned and it is troublesome to clean them after use.

The present invention takes into account the above-mentioned conventional problems and is easy to operate, allows for extraction of clear and delicious coffee without losing the flavor of the coffee, silently and reliably automatically cleans the utensils during use, and is easy to clean after use. To provide an electric coffee boiler that minimizes power consumption during automatic cleaning.

Means for solving the problem: A storage for storing coffee beans in the upper part of the brewing chamber, a lid of the storage that can be opened and closed, and communicating with the storage and communicating with the brewing chamber through a porous filter. , a grinding chamber equipped with a cutter driven by a motor, a tank containing water, a heater that introduces and heats the water in the tank, and a channel that guides the heated water to the storage; The motor is comprised of a time switch that directly energizes, then energizes the heater, and then energizes the motor via a diode.

Function: With the above configuration, everything from grinding coffee beans to extraction of coffee is carried out automatically, and when coffee is extracted, hot water is discharged from the storage chamber, passes through the grinding chamber and filter, and drips into the extraction chamber while washing the fine powder adhering to it. In addition, since a motor connected in series with the diode drives the cutter, the grinding chamber, which has a lot of powder adhesion, can be cleaned more reliably. In addition, when grinding coffee beans, the motor is directly energized and driven at high torque, but when cleaning, the load is small, so if you connect it in series with a diode and energize it, the rotation speed will be lower, making less noise, and it also consumes less power, making it more economical. It is.

EXAMPLE Hereinafter, an example of the present invention will be described with reference to the accompanying drawings. In Figures 1 to 4, 1 is the crushing chamber te motor 2.
It has a cutter 3 driven by a built-in cutter 3, and a porous filter 4 at the bottom through which only powder pulverized to a predetermined particle size passes. Further, the grinding chamber 1 is formed integrally with the coffee bean storage 6 and communicates with each other at the bottom.

A discharge port 6 for spouting hot water is arranged at the upper part of the coffee bean storage 5. A waterproof gasket 7 prevents hot water discharged into the grinding chamber 1 from entering the motor 2. Reference numeral 8 denotes a main body cover, which has a coffee bean inlet 9 formed on its upper surface and a lid 10 for opening and closing the inlet 9. The lid 10 is the input port 9
The upper part is made to protrude into a substantially dome shape, and a cylindrical rib 11 is formed around the upper part, so that when hot water is spouted from the outlet 6 into the coffee bean storage 6, the hot water leaks from the gap between the lid 10 and the inlet 9. 012.13 is a waterproof seal that prevents water and steam from entering the inside of the main body. The filter 4 is integrally formed with a filter holder 16 which is detachably attached to the main body B14 with a screw (not shown), and the inside of the grinding chamber 1 can be easily cleaned after use. An extraction lid 17 is removably mounted. A powder seal 18 made of an annular elastic body with an inverted U-shaped cross section is integrally provided on the extraction lid 17, and when the extraction chamber 16 is inserted into the main body B14, it is elastically fitted to the end face of the filter holder 16 and is removed from the fitting part. Prevent powder and hot water from leaking.

Reference numeral 19 denotes a tank for storing water, and is detachable from the main body A20. 21 is a heater that heats water introduced from a tank 19 in a heating section 22, and causes the water to be ejected from a discharge port 6 into the storage 6 through a water riser pipe 23.

24 is a time switch, which includes a timer motor 25 for timed operation, and a heater 21 and a diode 26 for the main power supply.
The motor 2 is connected in series with the circuit in which the motor 2 is connected in series with the switch S1a, S1b that selectively switches between the timer motor 25 and the motor 2 circuit, the switch S2 interposed in the timer motor 25 circuit, and the diode 26. It has a built-in switch S3 interposed in the circuit.

27 is a start knob that starts the time switch 24 after setting the time limit of the time switch 24.

In the above configuration, coffee beans are placed in the storage 5 and the lid 1o
, put water into the tank 19 and place the extraction chamber 16 in a predetermined position, and after setting the time switch 24 to a predetermined time limit, press the start knob 27, the switch S1b is closed and the motor 2 starts to drive. At the same time, the timer motor 25 starts a timed operation. After the coffee beans are sequentially crushed and discharged into the extraction chamber 16, the switch S1 is turned on.
b is switched to 81a, the switch S2 is opened, and the direct current supply from the main power supply to the motor 2 is ended, and the diode 26.b is switched to the switch S3, which is initially closed. The circuit to which the motor 2 is connected in series is energized, the rotation speed of the motor 2 decreases, and
Power supply to the heater 21 is started. At this time tank 19
The water inside is heated and discharged through the riser pipe 23 from the discharge port 6 into the storage 5, where it is diffused onto the wall surface by the cutter 3 driven by the motor 2, and into the storage 6, the grinding chamber 1, and the filter 4. Clean the attached fine powder. After a predetermined time, S
3 is an open diode 26. The motor 2 circuit and timer motor 26 are stopped, and the heated water storage 6
The discharge to the grinding chamber 1 continues. It passes through the filter 4 and drips into the brewing chamber 16, where coffee extraction continues.

Cleaning after use is completed by pulling out the brewing chamber 16, discharging the extracted coffee powder, and then cleaning it.

Effects of the Invention As is clear from the description of the embodiments above, the present invention has a storage for storing coffee beans in the upper part of the brewing chamber, a lid for the storage that can be opened and closed, and a lid that communicates with the storage and has a porous structure. A grinding chamber that communicates with the extraction chamber through a shaped filter and is equipped with a cutter driven by a motor inside, a tank that stores water, a heater that introduces and heats the water in the tank, and a heater that heats the water by introducing it into the tank. By supplying electricity directly to the flow path leading to the storage and the motor, then to the heater, and then to the motor via the diode, coffee can be automatically ground from coffee beans to coffee extraction, and at the same time coffee powder can be extracted. It is possible to reliably clean the equipment that has adhered to it, and since it uses a motor connected in series with a diode, the rotation speed is low and the noise is extremely low, making it extremely easy to use and having great practical effects.

[Brief explanation of the drawing]

Fig. 1 is a vertical cross-sectional view of a main part showing an embodiment of the present invention, Fig. 2 is a partial cross-sectional view of the same tank and flow path, Fig. 3 is a circuit diagram of the same,
FIG. 4 is an external view of the same coffee boiler, and FIGS. 5 and 6 are longitudinal sectional views of the conventional coffee boiler. 6...Storage, 6...Discharge port, 1...
...Crushing chamber, 3...Cutter, 2...
...Motor, 4...Filter, 16...
...Extraction chamber, 24...Time switch, 26
...Timer motor, 26...Name of Diode O agent Patent attorney Toshio Nakao and 1 other person/--Hisakuou 2--Moogu 3-m = Kaguu 4- 7A Luku No. 1 Figure 5-"lmata> Old warehouse 6-Ro Tsuchimiguchi 16--Solitary exit room- Figure 2 Figure 5 Figure 6 1θ4 106

Claims (2)

[Claims] (1) A storage for storing coffee beans in the upper part of the brewing chamber, a lid of the storage that can be opened and closed, and a lid that communicates with the storage and the extraction chamber through a porous filter, and a motor inside. A grinding chamber equipped with a driven cutter, a tank containing water, a heater that introduces and heats the water in the tank, a flow path that leads the heated water to the storage, and direct electricity to the motor. An electric coffee brewer comprising a time switch that then energizes the heater and then energizes the motor via a diode. (2) The electric coffee brewer according to claim 1, wherein the time switch directly energizes the motor, then energizes the heater, and then energizes the motor for a short time via a diode.