JPH0423530B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an electric coffee boiler that grinds coffee beans and automatically extracts coffee.

(Prior Art) Electric coffee boilers that generally have a coffee bean grinding function are devices that are easier to operate, allow you to drink coffee without losing its flavor, and ensure safety in all operating patterns. was requested.

For this reason, some conventional electric coffee brewers, for example as shown in FIGS. 6 and 7, grind coffee beans and immediately automatically extract coffee.

(Problems to be Solved by the Invention) In the conventional electric coffee boiler, as shown in FIG.
In the case of extracting in the extracting section 61, since a mesh filter is used in the filtration section 62, fine powder of coffee beans is mixed into the extract, making it cloudy and having a bad texture.Furthermore, cleaning after use is difficult. There were problems such as the mesh filter was clogged with coffee powder residue and was difficult to clean.

Further, a grinding section 71 and an extraction section 72 shown in Fig. 7 are arranged side by side, and the coffee beans are ground and the coffee powder is sequentially transferred to the extraction section 72 by a circular force, and after the transfer is completed, extraction is automatically performed. In the case of coffee grinders, fine coffee powder adheres to the grinding part 71 and the inner surface of the lid covering the grinding and extraction part due to static electricity, resulting in unextracted coffee powder, which is uneconomical, and also requires cleaning after use. There was a problem that there were many parts to be replaced and it was cumbersome.

(Objective of the Invention) The present invention solves the above conventional problems, is easy to operate, allows delicious coffee extraction without losing the flavor of coffee, and avoids unsafe conditions in the operation pattern. The object of the present invention is to provide an electric coffee brewer with the following configurations.

(Means for solving the problem) A storage for storing coffee beans in the upper part of the brewing chamber,
A grinding chamber that communicates with the storage and an extraction chamber through a porous filter, and is equipped with a cutter driven by a motor inside, a tank that stores water, and the water in the tank is introduced and heated. a flow path switching chamber that guides the heated water to either a tank or a storage, and a time switch that controls driving the motor and energizing the heater, and the flow path configuration of the flow path switching chamber is When the time switch is turned off, the outflow path on the storage side is blocked.

(Function) With the above configuration, everything from grinding coffee beans to extraction of coffee can be carried out automatically, and the fine powder adhering to the grinding chamber can also be removed. When preparing to brew coffee, when the water in the tank enters the heater, hot water is immediately discharged due to the residual heat of the heater, but since the outflow path to the storage compartment is blocked, the user has to place the coffee beans in the storage compartment. This prevents the risk of splashing hot water when storing the product.

(Example) Hereinafter, one example of the present invention will be described based on the accompanying drawings. In Figures 1 to 5, 1 is a crushing chamber, and a cutter 3 driven by a motor 2.
It has a built-in porous filter 4 at the bottom that allows only powder crushed to a predetermined particle size to pass through. Further, the grinding chamber 1 is formed integrally with the coffee bean storage 5, and communicates with each other at the bottom. At the top of the coffee bean storage 5 is a discharge port 6 that spouts hot water.
are placed. 7 is a waterproof packing, crushing chamber 1
This prevents hot water discharged 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.
It is equipped with The lid 10 has an upper part of the inlet 9 protruding into a substantially dome shape, and a cylindrical rib 11 is formed around the upper part of the inlet 9, and a discharge outlet 6 is formed in the coffee bean storage 5.
When hot water is spouted out, the hot water is prevented from leaking out from the gap between the lid 10 and the inlet 9. Waterproof seals 12 and 13 prevent water and steam from entering the main body. The filter 4 is integrally formed with a filter holder 15 which is detachably attached to the main body B14 with screws (not shown), so that the inside of the crushing chamber 1 can be easily cleaned after use.

Reference numeral 16 denotes a coffee brewing chamber, on the top of which a brewing lid 17 is removably placed. 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 the coffee extraction chamber 16 is connected to the main body B1.
4, it elastically fits into the end face of the filter holder 15 to prevent powder and hot water from leaking out from the fitting part.

Reference numeral 19 denotes a tank containing water, which can be attached to and detached from the main body A20. 21 is a heater that heats the water introduced from the tank 19 in a heating section 22, and
The hot water is pushed up to the flow path switching chamber 24 through the flow path switching chamber 24. The flow path switching chamber 24 includes an inflow path 25 for hot water, an outflow path 26 that opens to the tank 19 side, an outflow path 27 that opens to the coffee bean storage 5 side, and the respective outflow paths 26,
It consists of a lever 29 that operates an operating valve 28 that closes either one of the valves 27 from the outside using a as a fulcrum, and a flexible body 30 that moves in conjunction with the operation of the lever 29. One end 31 of the lever 29 is constantly biased clockwise by a spring 32 to close the outflow path 27.

33 is a time switch, which has a timer motor 34 for timed operation inside, and when a predetermined time elapses when the main power is turned on from the motor 2 side, the heater 21
Switch to the side. The time switch 33 has a cam 36 mounted on a main shaft 35 for setting a time limit, and is configured to drive an operating rod 38 via an arm 37 in connection with the time limit operation. When the crest of the cam 36 and the arm 37 are in contact with the operating rod 38, the lever 29 is moved against the spring 32 to close the outflow path 26.
Further, when the trough of the cam 36 and the arm 37 are in contact with each other, the outflow path 27 is closed. The valley of the cam 36 is connected to the arm 3 when the time switch 33 connects the main power to the motor 2 side and when it is turned off.
When the main power source is connected to the heater 21 side, the peak portion is formed to come into contact with the arm 37. 39 is a start knob that starts the time switch 33 after setting the time limit of the time switch.

In the above configuration, after putting coffee beans into the coffee bean storage 5, closing the lid 10, putting water into the tank 19, and placing the coffee extraction chamber 16 in a predetermined position and setting the time switch 33 to a predetermined time, the machine starts. When the knob 39 is pressed, the motor 2 is energized and driven, and the coffee beans that enter the grinding chamber 1 from the coffee bean storage 5 are sequentially ground by the cutter 3 driven by the motor, and when they reach a predetermined particle size, they are passed through the filter 4. It passes through the hole and is discharged into the coffee extraction chamber 16. At this time, the trough of the cam 36 and the arm 37 are in contact with each other, and the outflow path 27 is closed. When all the coffee beans placed in the coffee bean storage 5 are ground and enter the coffee brewing chamber 16 for a predetermined period of time, the time switch 33
The current is switched from the motor 2 to the heater 21, the peak of the cam 36 and the arm 37 come into contact, the outflow path 26 is closed and the outflow path 27 is opened, and the flow is sent from the heater 21 to the flow path switching chamber 24. The hot water is discharged from the discharge port 6. The hot water discharged from the outlet 6 is dripped from the filter 4 into the coffee extraction chamber 16 while washing away coffee powder adhering to the coffee bean storage 5, the grinding chamber 1, the filter 4, etc., and extracts coffee liquid. Begins.

After use, cleaning is completed by simply turning off the time switch, pulling out the coffee brewing chamber 16, discharging the used coffee powder, and washing it together with the brewing lid 17.

At this time, the time switch is turned off, the valley of the cam 36 and the arm 37 are in contact with each other, and the outlet passage 27 is blocked.
The flow path is closed.

(Effects of the Invention) As is clear from the description of the embodiments above, the present invention includes a storage for storing coffee beans in the upper part of the brewing chamber, and a storage that communicates with the storage and communicates with the extraction chamber through a porous filter. A grinding chamber equipped with a cutter driven by a motor inside, a tank containing water, a heater that introduces and heats the water in the tank, and the heated water is sent to either the tank or storage. The flow path configuration of the flow path switching chamber is changed in relation to the operation of the time switch, and when the time switch is turned off. By blocking the outflow path on the storage side, the process from coffee bean grinding to coffee extraction is automatically performed. There is no need to clean it again, and it is extremely easy to use. Also, when preparing to brew coffee for the second time in a row by turning off the time switch,
When the water in the tank enters the heater, hot water is immediately discharged due to the residual heat of the heater, but according to the above configuration, it is not discharged to the storage compartment, so when the user puts coffee beans into the storage compartment, hot water is discharged. Such dangers can be prevented, and the practical effects are great.

[Brief explanation of drawings]

Fig. 1 is a vertical sectional view of the main part showing an embodiment of the present invention, Fig. 2 is a partial sectional view of the tank and flow path, Fig. 3 is a front view of the time switch section, and Fig. 4 is the same time switch section. FIG. 5 is an external view of the same coffee brewer, and FIGS. 6 and 7 are longitudinal cross-sectional views of a conventional electric coffee brewer. DESCRIPTION OF SYMBOLS 1...Crushing chamber, 6...Discharge port, 10...Lid, 24...Flow path switching chamber, 28...Operation valve, 33...Time switch, 34...Cam.

Claims (1)

[Scope of Claims] 1. A storage for storing coffee beans in the upper part of the extraction chamber, and a cutter connected to the storage and connected to the extraction chamber through a porous filter, which is driven by a motor. A grinding chamber, a tank that stores water, a heater that introduces and heats the water in the tank, a flow path switching room that guides the heated water to either the tank or storage, and a motor drive and heater. The flow path configuration of the flow path switching chamber is switched in relation to the operation of the time switch, and when the time switch is turned off, the flow path on the storage side is closed. Electric coffee brewer.