JPH0679577B2 - Electric coffee heater - Google Patents

Description

TECHNICAL FIELD The present invention relates to an electric coffee brewer used at home or the like,
More specifically, the present invention relates to an electric coffee brewer that grounds coffee beans and automatically extracts coffee with hot water.

(Prior Art) About this kind of conventional electric coffee brewer,
-165116 publication will be described as an example with reference to FIG.

In the figure, a conventional electric coffee brewer accommodates a motor 2 having a horizontal output shaft built in a main body 1 and a rotary blade 3 mounted on the output shaft, and can be freely attached to and detached from the main body 1. The crushing chamber 4 whose bottom surface has an arcuate cross section, the passage hole 5 formed in the bottom of the crushing chamber 4, the coffee extracting section 6 disposed below the crushing chamber 4, and the main body 1 are provided. It is composed of a hot water producing device 7 that produces hot water and supplies it to the coffee extracting section 6 through the crushing chamber 4 and the passage hole 5.

(Problems to be Solved by the Invention) However, the above configuration has a problem that a large amount of coffee beans are put into the crushing chamber 4 at one time, which imposes a heavy load on the rotary blade 3 and makes it difficult to win. It was In particular,
When the coffee beans placed in the crushing chamber 4 get wet with the hot water supplied from the hot water generator 7, not only does it fail well, but there is also the problem that the motor 2 is burned due to overload.

Further, although the rotary blade 3 and the crushing chamber 4 are washed by hot water supply, it is impossible to completely clean the crushing chamber 4 because it is large. Therefore, the rotary blade 3 and the crushing chamber 4 are removed and cleaned after each use. There is a problem that the operability is poor. Further, even when foreign matter is mixed in the coffee beans, it is necessary to remove the rotary blade 3 and then remove the crushing chamber 4, which is troublesome and has a problem of poor operability.

The present invention solves the above problems, coffee beans are sequentially supplied to the crushing chamber, the electric motor is not overloaded, the crushing chamber is always washed with hot water and does not need to be cleaned every time, and foreign matter is mixed. It is intended to provide an electric coffee brewer with good operability that can be easily dealt with at any time.

(Means for Solving Problems) In order to solve the above problems, according to the present invention, a substantially horizontal output is provided at a lower portion of a hopper that accommodates coffee beans and has a discharge port that communicates with a hot water generator. The rotary blade attached to the shaft is housed, a bean supply port is provided in front of the rotary blade, and a crushing container that can be attached and detached to the hopper is arranged to form a crushing chamber. A sieve plate is arranged at the bottom, and coffee powder is supplied to the coffee extraction unit arranged below the sieve plate.

(Operation) With the above configuration, the coffee beans stored in the hopper are
Since the coffee beans are successively supplied into the crushing chamber in small amounts, the electric motor is not overloaded even when the coffee beans get wet, and the rotation speed of the rotary blade does not decrease, so that the coffee beans can be smoothly ground.

In addition, the hot water spouted from the discharge port provided in the hopper enters the crushing chamber from the hopper, and the function of the rotary blade cleans the small crushing chamber and drops it from the sieve plate to the coffee brewing section, so it is always kept clean and used. There is no need to disassemble and clean each time.

Further, since the crushing container and the sieving plate can be easily attached and detached, it is easy to perform periodical maintenance and handling of foreign matter.

(Embodiment) An embodiment of the present invention will be described with reference to FIGS. 1 and 2.

FIG. 1 is a side sectional view of the electric coffee brewer according to the present invention, in which an electric motor 2 is arranged substantially horizontally by using a buffer rubber 8 in an upper part of a main body 1, and an output shaft 9 thereof is arranged in an upper part of the main body 1. It is made to project from the lower rear wall of the hopper 10 that accommodates coffee beans and that is arranged. The hopper 10 is provided with a hot water discharge port 10a at the upper part thereof, and a step 10b formed at the bottom thereof is used to remove the sieving plate 1
Place 1 detachably. A rotary blade 3 for grounding coffee beans is detachably fixed to the output shaft 9 and a crushing container 12 provided with a bean supply port 12a on the front surface of the rotary blade 3 so as to cover the rotary blade 3.
Is attached detachably and lockably to form the crushing chamber 4, and the sieving plate 11 is fixed by the lower end surface 12b and the stepped portion 10b of the hopper 10.

To lock the above grinding container 12 in the hopper 10, use the hopper 10
A rotatable stopper 13 is provided on the upper part of the table, and it is locked and released by rotating 90 degrees. The rotary blade 3 is composed of an even number of blade-shaped cutters, and at least a pair of tips thereof are bent, one of them is bent toward the bean supply port 12a and the other is bent in the opposite direction.

A hopper lid that covers the opening of the hopper 10 on the upper surface of the main body 1.
14 is provided, its rear side is pivotally attached to a support shaft 15 provided on the main body 1, and is fixed to the main body 1 by using an engaging knob 14a formed at the front end thereof. A safety switch (not shown) is provided at this engaging portion so that the electric motor 2 and a hot water producing device (not shown) described later are not energized when the hopper lid 14 is not completely closed. Further, a safety rod 14b is formed on the inner surface of the hopper lid 14, and hits the stopper 13 at the position where the stopper 13 does not lock the crushing container 12, and the hopper lid 14
Is not completely closed, and therefore the electric motor 2 is not energized. FIG. 2 shows a state in which the crushing container 12 is locked by the stopper 13, and the safety rod 14b does not hit the stopper 13.

A coffee extractor 6 which is horizontally slidably inserted into and removed from the hopper 10 is provided, a funnel-shaped inner surface is provided with a filter 16, and a lid having a coffee powder receiving port 17a at the center of the opening. Basket lid 18 with packing 17
Install each. When the coffee extracting unit 6 is inserted and attached to the main body 1, the coffee powder receiving port
17a elastically engages with the above-mentioned cylinder opening 10c formed at the bottom of the hopper 10 to seal the passages for coffee grounds and hot water. The above hopper 10 is mounted on the eaves of the main body 1 through the two annular packings 19 and 20 made of elastic material.

A hot water producing device (not shown) is built in the lower trapezoidal part of the main body 1, and a coffee container made of heat-resistant glass is provided on the device.
21 is placed and receives the coffee dropped from the coffee extracting section 6 and stores it. In addition, the discharge port 10a of the above-mentioned hopper 10 which communicates with the hot water producing device has a hopper 10 as shown in FIG.
Is provided on the side wall of the crushing container 12 and is arranged so as to easily flow into the bean supply port 12a of the crushing container 12 as shown in FIG.

The operation of the electric coffee brewer having such a configuration will be described.

First, the filter 16 is attached to the coffee brewing unit 6, the lid is covered with the basket lid 18, and then the coffee brewing unit 6 is inserted into the eaves portion of the main body 1. The lid packing 17 of the basket lid 18 is the barrel opening 10 of the hopper 10.
The tip of c is elastically deformed to get over, and the coffee powder receiving port 17a is engaged with the tube port 10c to be sealed. At this time, the hopper
Since 10 and the electric motor 2 are elastically supported by the main body 1 via the annular packings 19 and 20 and the buffer rubber 8, respectively,
The cylinder opening 10c is also displaced vertically, helping the deformation of the lid packing 17 and reliably sealing. Therefore, it is possible to prevent the coffee powder from leaking and to prevent the vibration generated when the coffee beans are ground from being transmitted to the coffee extraction unit 6, thereby realizing low noise and low vibration.

Next, open the hopper lid 14 and hopper the required amount of coffee beans.
When placed in 10, some of the coffee beans enter the grinding chamber 14 through the bean supply port 12a. Next, when the hopper lid 14 is closed and the engaging knob 14a is engaged, the safety switch (not shown) is closed and the energization is possible.

Next, when a required amount of water is put in a hot water supply unit (not shown) and a timer (not shown) is operated, first, the electric motor 2 starts to operate and the rotary blade 3 rotates to ground coffee beans. The ground coffee powder is sifted by the sieving plate 11, passes through the cylinder port 10c and the coffee powder receiving port 17a, and is deposited on the filter 16 of the coffee extraction unit 6. At this time, the sieving plate 11 is the step portion 10 of the hopper 10.
Since it is securely held between b and the lower end surface 12b of the crushing container 12, there is no deformation caused by the impact when the coffee beans are ground,
Also, it will not fall out. Also, the tube mouth 10c is the lid packing 1
Since it is sealed with 7, there is no risk of coffee grounds leaking out of the container.

As the coffee beans in the grinding chamber 4 are ground, the hopper 10
Since the coffee beans stored in 1 are sequentially supplied to the crushing chamber 4 from the bean supply port 12a, the electric motor 2 can be smoothly ground without being overloaded. When the operation is finished, the timer stops the electric motor 2 and the hot water generator (not shown) is energized. Hot water from the hot water generator flows out from the discharge port 10a of the hopper 10, and when the coffee beans are ground, the coffee powder scattered from the bean supply port 12a into the hopper 10 and the coffee powder that has entered the gap between the crushing container 12 and the hopper 10. The coffee powder adhering to the corners of the crushing chamber 4 and the sieving plate 11 is washed off and enters the coffee extracting section 6 through the cylinder port 10c. At this time, the electric motor 2 is operated again, hot water is sprinkled on the crushing chamber 4 by the rotary blade 3, and the entire inner wall surface and the shaded portion are washed away. Electric motor 2
After the restart for several seconds, all the coffee powder in the hopper 10, the crushing chamber 4 and the sieving plate 11 is transferred to the coffee extracting section 6, so that the coffee having a desired concentration is extracted.

As described above, since the hopper 10, the crushing chamber 4 and the sieving plate 11 are cleanly washed during use, it is not necessary to disassemble and clean each time, and the coffee brewing section 6, the basket lid 18 and the coffee container 21 are not cleaned. All you have to do is wash it.

The crushing container 12 may be removed by operating the stopper 13 only when the maintenance is performed regularly or when foreign matter is mixed, and the operation is easy because of the simple structure. The rotary blade 3 has an output shaft 9
Since the work can be carried out with the rotary blade 3 attached and detached, the unbalance amount is not increased by the attachment and detachment of the rotary blade 3, and the noise and vibration during the operation are not increased.

(Effect of the Invention) As described above, according to the present invention, since the coffee beans stored in the hopper are supplied to the crushing chamber in small amounts, the coffee beans are smoothly pulled without overloading the electric motor. You can In addition, since all of the ground coffee grounds are transferred to the coffee extraction unit by the hot water supplied from the hot water generator, coffee having a desired concentration is extracted.

Further, since the hopper, the crushing chamber and the sieve plate are washed after each use, only the coffee brewing section, the basket lid and the coffee container need to be cleaned after each use, which is easy to use. In addition, regular maintenance and disassembly and cleaning when foreign matter is mixed are easy because of the simple structure.

Further, even if the coffee beans get wet, the electric motor will not burn out. An electric coffee brewer with good operability and high reliability can be obtained.

[Brief description of drawings]

1 and 2 are a side sectional view and a front sectional view of an essential portion of an electric coffee brewer according to the present invention, and FIG. 3 is a side sectional view of a conventional electric coffee brewer. 1 ... Main body, 2 ... Electric motor, 3 ... Rotating blade, 4 ... Grinding chamber, 5 ... Passage hole, 6 ... Coffee extracting section, 7 ... Hot water producing device, 8 ... Buffer rubber, 9 ... … Output shaft, 10… Hopper, 10a… Discharge port, 10b… Step section, 10c… Cylindrical port, 11…
… Sieving plate, 12 …… crushing container, 12a …… bean supply port, 12b…
… Bottom surface, 13 …… Stopper, 14 …… Hopper lid, 14a ……
Engagement knob, 15 ... Support shaft, 16 ... Filter, 17 ... Lid packing, 17a ... Coffee powder receptacle, 18 ... Basket lid, 19,20 ... Annular packing, 21 ... Coffee container.

Claims (1)

[Claims] 1. A main body, a hopper provided on the upper part of the main body for accommodating coffee beans, a rotary blade mounted on an output shaft of a motor built into the main body substantially horizontally, and a rotary blade mounted on the output shaft projecting to the lower part of the hopper. It consists of a sieving plate arranged at the bottom of the hopper, a coffee extraction unit arranged below the hopper, a water heater for the hopper, and a coffee container arranged below the coffee extraction unit. In an electric coffee brewing machine, a side wall of a hopper is provided with a discharge port communicating with the hot water supply device, and at the lower part of the hopper, the rotary blade is housed to form a grinding chamber, and a bean is provided in front of the rotary blade. An electric coffee brewing machine, characterized in that a crushing container provided with a supply port is detachably attached.