JPS6334587Y2 - - Google Patents

Description

[Detailed description of the invention] This invention is a coffee maker that grinds coffee beans, automatically transfers the ground coffee powder to a filtration chamber, and injects hot water into the filtration chamber to extract coffee liquid. Regarding improvements.

Conventionally, this type of coffee maker has integrated a grinding chamber and a filtration chamber, grinds coffee beans by rotating a cutter device in the grinding chamber, and transfers the coffee powder to an air flow generated by the rotation of the cutter device. The coffee powder is automatically transferred from the grinding chamber to the filtration chamber via a communication path, and the coffee powder and clean air are separated by the air flow in the filtration chamber, that is, the so-called cyclone effect, and only the coffee powder is filtered. The coffee powder is deposited in the room, and hot water dripped from the hot water outlet into the deposited coffee powder is dispersed and injected via the hot water receiving plate to extract the coffee components, and the coffee is distributed as coffee liquid in the lower part of the filtration chamber. A method in which the liquid is stored in a liquid container is known.

By the way, it is possible to more effectively transfer the coffee powder and the air taken in from the outside from the grinding chamber to the filtration chamber, and to separate the coffee powder from the intake air in the filtration chamber, and also to provide a hot water receiving plate. There has been a widespread demand among consumers for a coffee maker that can efficiently supply coffee by effectively supplying hot water into the filtration chamber through the filtration chamber.

The present invention has been developed in view of this conventional situation, and includes a cylindrical air flow guide wall provided on the lower surface of the top wall of the filtration chamber, and a cylindrical air flow guide wall located above the lower end surface of the air flow guide wall within the cylinder. The configuration in which a hot water receiving plate is provided in the filtration chamber allows for more effective transfer of coffee grounds and intake air from the grinding chamber to the filtration chamber, and separation of the coffee grounds and intake air in the filtration chamber. The purpose of the present invention is to provide a coffee maker that can more effectively supply hot water through a receiving plate.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of the present invention will be described in

In the figure, 1 is a main body case of the coffee maker, which houses a motor 2 that drives a cutter device as a member for crushing coffee beans, a heating device 3 that heats water injected into a filtration chamber, and the like.

4 is a cutter device, and the motors 2 and 6,
It is connected to a position directly above the motor 2 via a coupling ring 6', and is housed in a mill case 5 serving as a grinding chamber, which is detachably mounted on the main body case 1, and grinds coffee beans, which will be described later. Creates a swirling airflow. Reference numeral 7 designates a hot water discharge port through which water supplied from a water container, which will be described later, is heated by the heating device 3 and discharged after being turned into hot water, and 9 forms a filtration chamber K at a position below the hot water discharge port 7. and a basket 8 for storing filter media; 10 is a basket lid that is placed over the basket 9 and functions as a ceiling wall of the filtration chamber K; the lid 10 and the mill case 5 are pressed and fixed from above by the main body lid 24; has been done. The inner diameter of the mill case 5 is smaller than the inner diameter of the upper part of the filtration chamber K, as shown in FIG.

Reference numeral 11 denotes a communication passage connecting the mill case 5 and the filtration chamber K, which opens on the side wall of the mill case 5 toward the upper space of the filtration chamber K. An on-off valve 12 is installed to control the opening and closing of the valve. Further, as shown in FIG. 4, this communication passage 11 is connected to each of the mill case 5 and the filtration chamber K in a substantially tangential direction. Furthermore, this communicating path 11 is provided with 20 powder transfer walls extending the bottom wall of the communicating path 11 toward the filtration chamber K side. The width of the powder transfer wall 20 is larger than the width of the communication path 11.

14 is a filter provided on the top wall of the mill case lid 13 that is placed and fixed on the upper part of the mill case 5; 15 is a partition wall that is detachably attached to the mill case lid 13; A wind guide tube is vertically installed with its opening facing the cutter device 4 to a position directly above the cutter device 4,
The interior space of the mill case 5 is divided into upper and lower halves. 17
is a filter presser provided on the back side of the basket lid 10 for pressing the filter medium 8 from above.

Reference numeral 18 denotes a hot water receiving plate provided at a central lower position of the basket lid 10, which is connected and supported within the cylinder of a cylindrical air flow guide wall (to be described later) by several columns 21, and is connected to and supported from the hot water outlet 7 by several pillars 21. Receiving hot water dripping,
The hot water is distributed and supplied into the filtration chamber K from the outer peripheral end of the hot water receiving plate 18.

Reference numeral 19 denotes a cylindrical air flow guide wall that is vertically installed on the lower surface of the basket lid 10 and functions as a ceiling wall of the filtration chamber K, and one side of the peripheral wall extends to a position facing the outlet of the communication passage 11. At the same time, the lower end surface of the air flow guide wall 19 is located below the lower surface of the hot water receiving plate 18 on the outer periphery of the hot water receiving plate 18 and on the inner periphery of the filter medium presser 17. It is installed vertically.

In addition, 22 is a glass bottle 25 that is placed on the heating device 3 and stores the coffee liquid to be extracted and dripped through the hole 23 opened at the bottom surface of the lower part of the basket 9.
is a water container installed at the rear of the main body case 1.

Next, the action will be explained.

Remove the main body lid 24 and put the necessary predetermined amount of coffee beans into the mill case 5.
A filter medium 8 such as a commercially available coffee paper filter is placed in the container, and after the basket lid 10 is put on, the main body lid 24 is attached and fixed.

Next, the cutter device 4 is rotated in the direction of arrow P shown in FIG. 4 by energizing the motor 2,
Grind the coffee beans. After a predetermined period of time has elapsed, when the on-off valve 12 is opened to open the communication path 11, the swirling air flow containing coffee powder generated by the impellers B and B' provided in the cutter device 4,
In the direction of arrow _F1 shown by the dashed line in FIG.
The airflow flows from the filtration chamber K through the communication path 11 to the filtration chamber K, and the coffee powder in the mill case 5 is transferred to the filtration chamber K side along with the airflow.

Due to the so-called cyclone effect in aerodynamics, the airflow containing the coffee powder transferred to the filtration chamber K side passes through a cylindrical filter provided on the back side of the basket lid 10, as indicated by the arrow _F2 indicated by a dashed line in FIG. While rotating the air flow path formed between the air flow guide wall 19 and the filter medium holder 17 in one direction, the air gradually flows downward, and as soon as it reaches the lower part of the filtration chamber K, the direction changes upward, and the air The coffee powder rises inside the cylinder of the airflow guide wall 19 and is discharged outside the main body, and is deposited in the filtration chamber K.

Note that coffee powder and air can be separated without installing a special filter on the exhaust side of the air flow. That is,
Only clean air flows through the air flow guide wall 19 and hot water receiving plate 18
It is discharged to the outside from the gap between the

As described above, when the coffee powder has been transferred from the mill case 5 to the filtration chamber K, when the power to the motor 2 is stopped and the power is applied to the heating device 3, the water supplied from the water container 25 is heated by the heating device 3. The heated hot water is guided to the hot water outlet 7, drips onto the hot water receiving plate 18 from the hot water outlet 7, and is distributed and supplied into the filtration chamber K from the outer peripheral end of the hot water receiving plate 18. When this hot water passes through the coffee powder in the filtration chamber K, it extracts coffee components, and drops through the filter medium 8 through the hole 23 into the glass bottle 22 as coffee liquid, where it is stored.

At this time, the cylindrical air flow guide wall 19 forms an annular ventilation flow path in the upper space of the filtration chamber K together with the filter medium presser 17 provided around the outer periphery, so that the swirling air shown by arrow _F2 in the figure The flow is more effectively generated, the cyclone effect is enhanced, and the coffee powder can be transferred from the mill case 5 to the filtration chamber K and the coffee powder and air can be separated from the air in the filtration chamber K more effectively.

In addition, the hot water receiving plate 18 is replaced by a cylindrical air flow guiding wall 19.
Since the hot water receiving plate 18 is formed in a cylinder such that the lower surface of the hot water receiving plate 18 is located above the lower end surface of the air flow guide wall 19, the hot water dripping onto the hot water receiving plate 18 from the hot water discharge port 7 flows into the air flow guiding wall. It is possible to prevent the coffee liquid from scattering to the outside of the coffee cup 19 and extract the coffee liquid efficiently.

Further, according to this embodiment, the communication passage 11 is formed to be connected to the mill case 5 and the filtration chamber K in a substantially tangential direction, so that the swirling air flow generated by the rotation of the cutter device 4 can be more effectively transferred to the mill case 5 and the filtration chamber K. The air flow can be made to flow from the filter chamber K to the filter chamber K, and in combination with the effective air transfer by the air flow guide wall 19, the effect can be further enhanced.

In addition, since the inner diameter of the upper part of the filtration chamber K is made larger than the inner diameter of the mill case 5, the movement of the coffee powder after being discharged from the communication path 11 into the filtration chamber K becomes slower than the movement inside the mill case 5, resulting in a cyclone. Due to this effect, coffee powder can be accumulated in the filtration chamber K more effectively.

Furthermore, according to the present embodiment, since the lower end surface of the air flow guide wall 19 is formed to be located lower than the lower surface of the hot water receiving plate 18, the coffee powder discharged from the communication passage 11 into the filtration chamber K is first Since the coffee powder circulates around the outer circumference of the air flow guide wall 19, it is possible to prevent the coffee powder from leaking outside through the gap between the coffee powder and the hot water receiving plate 18 formed inside the air flow guide wall 19.

Furthermore, according to the present embodiment, the lower end of the filter medium presser 17 is formed to be located directly above the basket 9, so that the lower end can press the filter medium 8 from above, preventing the upper end of the filter medium 8 from turning over. This prevents the transferred coffee powder from entering between the filter medium 8 and the basket 9.

Further, since the powder transfer wall 20 extends so as to cover the upper part of the filter medium 8 and has a width larger than the width of the communication path 11, the coffee powder transferred via the communication path 11 flows into the filtration chamber K. The coffee powder is sufficiently guided and the coffee powder is not scattered due to turbulent flow near the opening of the communication path 11 on the side of the filtration chamber K.

Furthermore, since the configuration is such that the clean outside air sucked in through the filter 14 provided on the mill case lid 13 is discharged toward the rotation center of the cutter device 4 through the wind guide tube 16, the impeller B, The centrifugal fan effect by B' is enhanced, and the coffee powder can be transferred from the mill case 5 to the filtration chamber K more effectively.

As explained above, according to the present invention, a cylindrical air flow guide wall is provided on the lower surface of the top wall of the filtration chamber, the lower end surface of which is positioned below the lower surface of the hot water receiving plate disposed in the cylinder. Therefore, the transfer of the coffee powder from the grinding chamber to the filtration chamber and the separation of the coffee powder from the air in the filtration chamber are performed more effectively, and the air flow of hot water dripping from the hot water outlet is directed to the outside of the wall. It is possible to prevent the scattering of coffee and efficiently supply coffee.

[Brief explanation of the drawing]

The drawings show an embodiment of the coffee maker according to the present invention, in which Fig. 1 is a vertical sectional view of the main part, Fig. 2 is a plan view of the same, and Fig. 3 is an exploded view of the basket and basket lid shown in Fig. 1. , FIG. 4 is a diagram of the principle structure for explaining the process from grinding to transportation of coffee beans. 1... Coffee maker body case, 4... Cutter device, 5... Mill case, 8... Filter medium, 9
...Basket, 10...Basket lid, 11...
...Communication path, 18...Hot water receiving plate, 19...Cylindrical air flow guide wall, K...Filtering chamber.

Claims (1)

[Scope of utility model registration request] a grinding chamber in which coffee beans are ground by a rotating cutter device; a filtration chamber in which the ground coffee powder is introduced from the grinding chamber through a communication path by an air flow generated by the rotation of the cutter device; A coffee maker comprising: a hot water outlet for dripping hot water into the filtration chamber from above the filtration chamber, and in which the hot water injected into the filtration chamber is filtered and extracted as coffee liquid; is provided with a cylindrical air flow guide wall extending at a position facing the outlet of the communication passage, and a lower end surface of the cylindrical air flow guide wall is configured to receive the hot water dripping from the hot water discharge port and discharge the hot water. A coffee maker characterized in that the coffee maker is located below the lower surface of a receiving plate for supplying hot water in a distributed manner into the filtration chamber.