JPH0571244B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an electric coffee brewer that continuously and automatically grinds coffee beans and extracts coffee liquid.

2. Description of the Related Art In general, this type of electric coffee boiler has a structure as shown in FIG. 4, as disclosed in, for example, Japanese Utility Model Application Publication No. 59-10734.

That is, the motor 2 is mounted on the upper part of the main body 1 and the rotating shaft 3 is connected to the motor 2.
A blade-shaped crusher 4 is attached to the end of the rotary shaft 3, and the rotary shaft 3 is inserted into a hopper 5 provided below and adjacent to the motor 2 from above. It penetrated and extended to the vicinity of the bottom surface. Further, a basket 6 for storing coffee powder produced in the hopper 5 was provided below the hopper 5, and a container 7 for storing coffee liquid was provided below the basket 6. 8
is a water tank, and a heating pipe 10 is connected to the bottom of this water tank 8 via a check valve 9, and a heater (not shown) is attached to this heating pipe 10, and is integrally made of aluminum die-casting. The heating body 11 was constructed in the following manner. Further, the heating pipe 10
is connected to the hot water supply pipe 12, and the hot water supply pipe 1
The discharge port 13 at the tip of the hopper 2 opened at the top of the hopper 4. These water tank 8, check valve 9,
Heating pipe 10, heating element 11 and hot water supply pipe 1
A hot water supply device 14 was constructed from the second class.

In the above configuration, the motor 2 is used both for grinding coffee beans and for connecting the hot water supply pipe 12 from the hot water supply device 14 to the hot water supply pipe 12.
The hopper 5 is rotated while hot water is being supplied to the hopper 5 via the hopper 5.

Problems to be Solved by the Invention However, in the conventional configuration described above, when coffee beans are ground by the hopper 5, the coffee powder or coffee bean grains stirred by the grinding body 4 are located at the upper part of the hopper 5. hot water pipe 12
The discharge port 13 of the water heater 1 is clogged, and as a result, the water heater 1
When hot water is supplied from the discharge port 13, there are disadvantages in that the amount of hot water supplied decreases or the hot water supply is blocked in the vicinity of the discharge port 13. Further, while the hot water is being supplied to the hopper 5, the crushing body 4 is driven to rotate, but most of the supplied hot water is sprinkled in the rotational circumferential direction of the crushing body 4, and as a result, the hopper 5 There was a problem with coffee powder remaining attached to the top surface, and Hopper 5
The interior was not properly cleaned.

The present invention solves the above conventional problems,
The simple configuration eliminates clogging of hot water pipes and increases the reliability of the equipment, and the grinding chamber is flushed out every time it is used.
The purpose of the present invention is to provide an electric coffee boiler that is easy to use.

Means for Solving the Problems In order to achieve the above-mentioned object, the present invention includes: a motor disposed with a rotating shaft oriented in a substantially horizontal direction; a grinding body that is rotationally driven by the motor to grind coffee beans; a grinding chamber that surrounds the grinding body; a hopper that accommodates the coffee beans; and a coffee bean inlet that opens in the axial direction of the rotating shaft of the motor and communicates with the grinding chamber at the bottom of the hopper. an outlet provided at the bottom of the grinding chamber and having a plurality of small holes; a basket for storing coffee powder ground in the grinding chamber; a container for storing coffee liquid extracted in the basket; a hot water supply device for supplying hot water to the powder, the discharge port of the hot water pipe of the hot water supply device being opened above the coffee bean inlet of the hopper;
The pulverizer is rotated during the hot water supply.

Effects As described above, the present invention has the discharge port of the hot water supply pipe of the water heater opened above the coffee bean inlet of the hopper, and the grinding body is rotated while hot water is being supplied. The ground coffee powder is mainly blown away in the circumferential direction of the grinder inside the grinding chamber, so it does not enter the hopper through the coffee bean inlet, which opens in the axial direction of the motor's rotating shaft. Since the outlet is opened above the coffee bean inlet, it does not reach the opening of the hot water pipe.

In addition, the hot water flows into the grinding chamber from the coffee bean inlet of the hopper and is sprayed by the grinder in the rotational circumferential direction of the grinder, so the water flows down from the inner top surface of the grinding chamber along the inner surface, Wash away any remaining coffee grounds on the sides.

Embodiment Hereinafter, an embodiment of the present invention will be described in FIGS. 1 to 3.
This will be explained with reference to the figures.

In the figure, 15 is a main body, and a motor 16 is provided on the upper part of this main body 15 with a rotating shaft 17 arranged in the horizontal direction, and a blade-shaped crushing body 18 is attached to this rotating shaft 17. It is being This crushing body 18 is surrounded by a crushing chamber 19. Further, above the grinding chamber 19, a hopper 20 for storing coffee beans is provided. A hopper lid 21 is provided at the upper opening of the hopper 20, and a steam hole 22 is formed in the hopper lid 21. A bean inlet 23 is formed at the bottom of the hopper 20 and is open in the axial direction of the rotating shaft 17, communicating the hopper 20 and the grinding chamber 19. Further, an air outlet 24 having a plurality of small holes is provided in the lower part of the crushing chamber 19, and this air outlet 24
A basket 25 for storing coffee powder produced in the grinding chamber 19 is attached below the grinding chamber 19. A basket lid 26 is attached to the upper opening of the basket 25.
In order to prevent coffee powder from scattering outside the basket 25, the extending book 27 and the rib body 28 are integrally formed of synthetic resin. Further, an extraction port 29 is formed at the bottom of the basket 25, and a filter 30 is installed inside the basket 25. Furthermore, a container 31 is provided below the basket 25 to store the coffee liquid extracted by the basket 25. 32 is a water tank, and a water supply port 33 is formed at the bottom of this water tank 32.
A heating pipe 34 is connected to this water supply port 33 via a check valve (not shown). This heating pipe 34 integrally constitutes a heating body 35 by a heater (not shown) and aluminum die-casting. The heating pipe 34 is connected to a heating circulation pipe 37 via a waterway switching valve 36, and the tip of the heating circulation pipe 37 opens into the water tank 32. A hot water supply pipe 38 is connected to the waterway switching valve 36, and a discharge port 39 of the hot water supply pipe 38 opens above the coffee bean input port 23 on the side surface of the hopper 20. The waterway switching valve 36 is linked to a timer 40, and connects a waterway from the water tank 32 to the water tank 32 via the heating pipe 34 and the heating circulation pipe 37, and a waterway from the water tank 32 to the heating pipe 34 and the hot water supply. This is for switching the waterway through which hot water is supplied to the hopper 20 via the pipe 38. and the water tank 32, the heating pipe 34,
Heating body 35, waterway switching valve 36, heating circulation pipe 3
7, the hot water supply pipe 38, and the like constitute a hot water supply device 41. Note that the motor 16 is also linked to the timer 40.

The operation of the above configuration will now be described.

First, remove the hopper lid 21 and pour the required amount of coffee beans into the hopper 20 from the upper opening of the hopper 20.
Store it in. Some of the coffee beans stored in the hopper 20 are stored in the grinding chamber 19 through the coffee bean inlet 23. On the other hand, the required amount of water is supplied to the water tank 32. Next, the power is turned on, the timer 40 is operated, and the motor 16 is driven. This motor 1
6 rotates the grinding body 18, so that the coffee beans are ground by the grinding body 18 to produce coffee powder. And this coffee powder is crushed body 1
8 in the rotational circumferential direction of the crushing body 18,
The air is stored in the basket 25 through the air outlet 24. As the coffee beans are ground in the grinding chamber 19, the coffee beans are supplied from the hopper 20 into the grinding chamber 19. When all the coffee beans have been ground, the timer 40 is activated to stop the motor 16, and then the heating element 3 of the water heater 41 is activated.
5 is energized. When the water in the water tank 32 heated by the heating element 35 reaches a predetermined temperature or higher, the water channel switching valve 36 is activated and the heating pipe 32 is heated.
4 to the heating circulation pipe 37 is switched to a water channel leading from the heating pipe 34 to the hot water supply pipe 38. The motor 16 is driven again at the same time as the waterway switching valve 36 is activated. The hot water supplied into the hopper 20 from the hot water supply pipe 38 via the discharge port 39 is supplied to the grinding chamber 1 from the coffee bean inlet 23.
Most of the water is sprayed by the crushing body 18 in the rotational circumferential direction of the crushing body 18. This water spraying removes coffee powder adhering to the internal top surface or side surface of the grinding body 19 while
4, hot water is supplied into the basket 25, and coffee liquid is extracted in this basket 25.
This coffee liquid drips from the extraction port 29 and is stored in the container 31.

Therefore, according to this embodiment, the coffee beans are ground by the grinding body 18 in the grinding chamber 19,
Also, the crushing chamber 19 and the discharge port 39 of the hot water pipe 38
The hopper 20, which is provided above the coffee bean inlet 23, is connected by the coffee bean inlet 23 opened horizontally at the bottom of the hopper 20, so that the coffee beans are ground by the grinding body 18, and the coffee beans are ground by the grinding body 18. The coffee powder blown in the circumferential direction of rotation of 18 will not clog the outlet 39 of the hot water supply pipe 38. In addition, the hot water supplied into the crushing chamber 19 by the crushing body 18 that is rotationally driven during hot water supply is heated by the crushing body 18.
Since water is most effectively sprinkled in the circumferential direction of the rotation of the grinding chamber 19, the coffee powder adhering to the inner wall surface of the grinding chamber 19 is removed by the hot water sprinkled on the top surface of the grinding chamber 19 dripping along the sides. This effectively removes the entire inner wall surface.

In this embodiment, the hot water supply pipe 38 is opened on the side surface above the coffee bean inlet 23 of the hopper 20, but it may be arranged so as to face above the hopper 20.

Effects of the Invention As is clear from the description of the above embodiments, according to the present invention, coffee beans are ground by a grinding body in a grinding chamber, and the coffee powder produced in this grinding chamber is mainly produced by the rotation of the grinding body. Because the coffee beans are blown in the circumferential direction, they do not enter the hopper through the coffee bean inlet, which is opened in the axial direction of the rotating shaft to which the grinder is attached, and instead flow into the outlet, which is located above the coffee bean inlet of the hopper. It never gets clogged.

This allows for a simple configuration that solves conventional problems, such as coffee powder etc. clogging the hot water supply pipe, which prevents hot water from being supplied, or the pressure inside the heating pipe etc. during hot water supply. Therefore, it is possible to prevent defects from occurring in the connection parts of the water heater, and as a result, the reliability of the product can be improved. In addition, the hot water supplied to the crushing chamber is sprayed by the crushing body in the rotational circumferential direction of the crushing body, so water can be sprinkled on the upper surface of the crushing chamber located in the rotational circumferential direction. By dripping hot water from the top of the room along the sides,
It is now possible to remove coffee powder that has adhered and remained on all the inner walls of the grinding chamber, and as a result, it is possible to prevent the equipment from becoming unsanitary due to coffee powder remaining and adhering to it, and to prevent the equipment from becoming unsanitary. This also makes cleaning easier.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway vertical sectional view of an electric coffee maker showing an embodiment of the present invention, FIG. 2 is a perspective view of the same electric coffee maker, and FIG. FIG. 4 is a longitudinal sectional view of a conventional electric coffee maker. 16...Motor, 17...Rotating shaft, 18...Crushing body, 19...Crushing chamber, 20...Hopper, 23
...Coffee bean inlet, 24...Outlet, 25...
... Basket, 31 ... Container, 38 ... Hot water supply pipe, 40 ... Water heater.

Claims (1)

[Claims] 1. A motor disposed with a rotating shaft oriented in a substantially horizontal direction, a grinding body that is rotationally driven by the motor to grind coffee beans, a grinding chamber that surrounds the grinding body, and a hopper that houses the coffee beans. a coffee bean inlet opening in the axial direction of the rotating shaft of the motor at the lower side of the hopper and communicating with the grinding chamber; and a blower outlet provided at the lower part of the grinding chamber and having a plurality of small holes. and a basket for storing coffee powder ground in the grinding chamber, a container for storing coffee liquid extracted in the basket, and a hot water supply device for supplying hot water to the coffee powder. An electric coffee boiler having an outlet opening above the coffee bean inlet of the hopper and rotating the grinding body during hot water supply.