JPH0716471B2 - 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, in the above configuration, when the coffee beans are ground, the coffee powder is expelled vigorously from the passage hole 5, so that if there is a gap between the coffee extraction unit and the coffee extracting unit, There is a problem that not only the table is scattered to the outside and the table is soiled, but also the coffee powder is wasted and the desired coffee concentration cannot be obtained.

As a countermeasure against this, a coffee extractor 6 engaged with the crushing chamber 4 has been devised, but there is a problem that coffee powder is unavoidably leaked from a gap between the engaging parts.
Further, there is a problem that the vibration of the crushing chamber 4 when the coffee beans are ground is transmitted to the coffee extraction unit 6 and generates a large vibration or noise.

Further, in the crushing chamber 4, although the coffee powder in the passage hole 5 through which the hot water passes is washed away, the coffee powder adheres to the other inner wall surface, which causes a problem that cleaning takes time.

The present invention solves the above-mentioned problems, and provides an electric coffee brewer which does not scatter coffee powder and is excellent in operability.

(Means for Solving the Problems) In order to solve the above problems, the present invention is provided with a rotating blade driven by an electric motor in a crushing chamber, and a sieve plate and an upper end portion thereof are connected to the sieve plate and A lower end of the crushing chamber is provided with a tube mouth having an inclined surface inclined with respect to the attachment / detachment direction of the coffee brewing section, and a basket lid attached to the upper opening of the coffee brewing section. A coffee powder receiving port that receives the coffee powder from the tube opening and guides it to the coffee extracting section is provided, and the coffee powder receiving box has an inclined surface that engages with the inclined surface at the lower end of the tube opening to seal it. It is equipped with a lid packing consisting of.

(Operation) According to the above configuration, the crushing chamber is provided at the lower end of the crushing chamber, the lower end portion is inclined, and the basket lid is attached, and the inclined surface engages with the inclined surface of the lower end portion of the cylindrical mouth. Since the lid packing made of an elastic body is joined, the gap between the cylinder mouth and the coffee receiving mouth is sealed, and coffee powder crushed in the crushing chamber does not leak from this joint surface.

Further, since each joint surface has an inclined surface, even when the coffee brewing portion is slid and attached / detached, the operation can be performed extremely smoothly.

(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 of the hopper 10, the hopper 10
A rotatable stopper 13 is provided on the upper part of the, and it is locked / released by rotating 90 °. 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.

The lower end surface of the cylinder opening 10c is inclined with respect to the sliding direction when the coffee extracting unit 6 is attached and detached, and the upper surface of the lid packing 17 is an inclined surface that engages with the lower end surface of the cylinder opening 10c.

Therefore, when the coffee brewing unit 6 is slid and removed, the inclined surfaces of the coffee brewing units 6 are engaged with or separated from each other at the same time, and the operation can be performed extremely smoothly.

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 falling from the coffee extracting unit 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 4 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, the electric motor 2 starts operating,
The rotary blade 3 rotates and grounds the 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, since the sieving plate 11 is securely held between the stepped portion 10b of the hopper 10 and the lower end surface 12b of the crushing container 12, no deformation is caused by the impact when the coffee beans are ground, and the sieving plate 11 can also be dropped. Absent. In addition, the tube mouth 10c is a lid packing 17
Since it is sealed with, 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 drawing is finished, the timer stops the electric motor 2 and the hot water generating device (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 bean supply port 1
Coffee powder scattered from the 2a into the hopper 10 and the grinding container 12
Coffee powder in the gap between the hopper 10 and the corner of the grinding chamber 4,
Rinse away the coffee powder adhering to the sieve plate 11 and
Enter the coffee extraction unit 6 from 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. When the electric motor 2 is restarted 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 coffee having a desired concentration is extracted.

During this hot water supply, hot water flows from the tube mouth 10c to the coffee extraction unit 6, but since it is sealed by the action of the annular packings 19 and 20 that support the lid packing 17 and the hopper 10, it does not leak outside.

As described above, the hopper 10, the grinding chamber 4 and the sieve plate 11
Is washed during use, so no coffee powder remains,
Therefore, only the coffee brewing section 6, the basket lid 18 and the coffee container 21 need be cleaned after use. The disassembly and cleaning can be done at regular intervals and when foreign matter is mixed in, and the simple structure makes operation easy.

Although the discharge port 10a is provided in the hopper 10 in the present embodiment, the discharge port 10a is not particularly limited, and may be changed within a range not departing from the gist.

(Effects of the Invention) As described above, according to the present invention, the cylindrical mouth having the sieve plate formed in the lower part of the crushing chamber supported by the main body by the elastic body, and the coffee brewing portion engaged with the main body are provided. Since the coffee powder receiving port of the elastic packing of the lid attached to the covering lid elastically engages with each other to form a sealed state, there is no scattering of coffee powder or leakage of hot water. Further, the lower end surface of the tube mouth is inclined with respect to the sliding direction when the coffee brewing section is attached and detached, and the upper surface of the lid packing is an inclined surface that engages with the inclined surface of the tube mouth.

Therefore, when the coffee brewing unit is slid and attached / detached, the slanting surfaces of the coffee brewing units allow extremely smooth operation.

[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, an electric motor in which an output shaft is installed substantially horizontally in the upper part of the main body, a crushing chamber containing a rotary blade mounted on the output shaft, a sieving plate for sieving coffee grounds, and a lower part of the crushing chamber. An electric coffee brewer that is detachably engaged with the coffee brewing section for storing coffee powder, a hot water generator for supplying hot water to the crushing chamber, and a coffee container for storing coffee; An upper end is connected to this sieving plate and a lower end is provided with a tube mouth having an inclined surface inclined with respect to the attachment / detachment direction of the coffee brewing section at the lower part of the crushing chamber, and further above the coffee brewing section. A basket lid attached to the opening is provided with a coffee powder receiving port that receives the coffee powder from the tube opening and guides it to the coffee extraction section, and the coffee powder receiving opening is engaged with the inclined surface of the lower end of the tube opening. Electric coffee boiling and device, characterized in that an inclined surface for sealing, and formed by attaching a lid gasket made of an elastic body Te.