JPH0667348B2 - Electric coffee heater - Google Patents

Description

TECHNICAL FIELD The present invention relates to an electric coffee brewer having a coffee bean crushing function.

2. Description of the Related Art Conventionally, as a fully automatic coffee brewer that automatically switches to a drip function after crushing coffee beans, a structure shown in FIG. 8 is known. That is, the coffee brewer shown in FIG. 8 independently comprises a coffee bean crushing chamber 1 and a filter chamber 3 for extracting coffee liquid and separating the residue with a filter medium 2 such as a paper filter. The movement of the coffee powder into the filter chamber 3 is sent to the filtration chamber 3 through the discharge port 4 and the transfer pipe 5.

Problems to be Solved by the Invention By the way, the roughness of coffee beans is determined by the number of rotations of the motor, the performance of the crushing cutter 6, etc., and with the above-mentioned configuration, the roughness of coffee powder cannot be changed, and the coffee concentration also changes. There was a problem I couldn't do.

Further, since the ground coffee powder is discharged from the discharge port 4 at a high speed, even if it is introduced into the filter medium 2 arranged in the filter chamber 3, it repels and scatters, and a part of the coffee powder is filtered by the filter medium 2 and the filter chamber 3. Into the gap of the coffee extract and mix it into the coffee powder at the time of coffee extraction, or the coffee powder adheres to the tip of the transfer pipe 5 for blowing out the coffee powder and does not transfer sufficiently. There was a problem that steam clogs.

The present invention solves such a problem, and the concentration of coffee can be adjusted by changing the particle size of coffee beans, and a coffee brewer that can easily perform maintenance after using the crushing chamber and the filtration chamber. It is intended to provide.

Means for Solving the Problems In order to solve this problem, the present invention has a crushing chamber having a cutter for crushing coffee beans, and a filter chamber to which a filter medium is detachably attached in a laterally adjacent relationship. And a first filter having a porous portion between the crushing chamber and the filtration chamber, and a second filter movable in contact with the first filter. The opening degree is changed, and the integrally formed crushing and filtering container is detachably attached to the main body.

Effect According to this configuration, the crushed grain size of coffee can be changed, so that coffee having a concentration according to taste can be put.
In addition, since the crushing chamber and the filtration chamber are integrally formed and attached to the main body in a detachable manner, the crushing chamber and the filtration chamber can be cleaned at one time after maintenance, and both the crushing chamber and the filtration chamber have a simple structure. Since the adhering coffee powder can be surely washed, clogging can be eliminated.

Embodiment An embodiment of the present invention will be described below with reference to the accompanying drawings. In FIG. 1 to FIG. 7, reference numeral 21 is a crushing / filtering container 21. The crushing / filtering container 21 is a substantially cylindrical crushing chamber 24 having a cutter 23 rotatably driven by a drive motor 22.
A filter chamber 25 for accommodating and extracting coffee beans crushed in the crushing chamber 24 is arranged in parallel and integrally formed.
A first filter 27 having a porous portion 26 on a part of the peripheral wall of the crushing chamber 24 that separates the crushing chamber 24 from the filtration chamber 25.
Is provided. The first filter 27 part is provided with a second filter 29 which is in contact with the first filter 27 and is movable in the lateral direction a, and the porous part 28 of the second filter 29 and the porous part 26 of the first filter 27 are provided. The crushing chamber 24 and the filtration chamber 25 are communicated with each other via the. Furthermore, the second
The filter 29 is provided with a hooking portion 29 'that engages with the first filter 27 so as not to move due to vibration or the like. Further, the bottom portion 24 'of the crushing chamber 24 is formed in the shape of a platter, and the first filter 27 is arranged so as to cut a circle drawn by the peripheral wall of the crushing chamber 24, so that the coffee beans can be appropriately crushed during the crushing of the coffee beans. After being crushed and passing through the first filter 27 and the second filter 29, the filtration chamber 2
5 is discharged onto the filter medium 30 formed by a paper filter and is ready for extraction.

Further, a paper formed of paper or the like by providing a rib 31 having a substantially triangular cross-section in a ring shape from the height of the filtration chamber 25 in contact with the lower edges of the porous portions 26 and 28 of the first filter 27 and the second filter 29. When the filter medium 30 formed of a filter or the like is arranged, coffee powder is prevented from easily entering the gap between the filter medium 30 and the side wall of the filtration chamber 25.

Further, a filter 32 made of stainless steel or a resin mesh is provided on the bottom portion 25 'of the filtration chamber 25 to prevent coffee powder from mixing into the coffee receiver 33.

34 is a lid of the crushing filtration container 21, and this lid 34 is a lid for the crushing chamber 2
4, a dome-shaped protrusion 36 having an inclined surface 35 is formed in a portion located above 4, and a hot water receiving portion 37 and a steam for diffusing hot water are provided in a portion located above the filtration chamber 25. A hole 38 for discharging the is formed. Reference numeral 39 denotes a coffee brewer body, which controls the left leg 40 with the drive motor 22 and the operating time of the drive motor 22, and energizes the drive motor 22 to the heater 41, which will be described later, after the operation is completed. Time switch 42 for switching on and off
44 for storing water, and for storing water in the right leg 43
Is formed. This tank 44 has a water pipe 46 formed integrally with the heater 41 via a check valve 45 provided at the bottom.
Connected to. The central portion of the coffee brewer body 39 is a space for housing the coffee receiver 33. An inclined surface 47 is formed on the upper bridge portion connecting the left and right legs 40 and 43 to facilitate the attachment / detachment of the coffee receiver 33 and the condensation of steam generated from the coffee accumulated in the coffee receiver 33. We are taking preventive measures.

The crushing and filtering container 21 in which the crushing chamber 24 and the filtering chamber 25 are integrally formed is detachably attached to the coffee brewer body 39. Reference numeral 48 denotes a hot water receiving chamber formed of a transparent heat-resistant resin in a dome shape.
A discharge port 49 is connected to the lid of the crushing filtration container 21 above the filtration chamber 24 so as to drop it. 50 is a lid of the coffee brewer body.

The operation of the above configuration will be described.

First, the lid 50 is opened, the lid 34 of the crushing and filtering container 21 is opened, a required amount of coffee beans is put into the crushing chamber 24, and the filter medium 30 such as a paper filter is attached to the side wall of the filtering chamber 25 so as to be in close contact therewith. In addition, when it is desired to supply a required amount of water to the tank 44 to make coffee having a high concentration, for example, the grain size of the coffee beans can be reduced.
When 9 is set as shown in FIG. 2, a small porous portion can be formed by combining the first filter and the second filter.

The cutter sequentially drops the beans and starts blowing from the porous portion, and those having a small particle size are discharged from the porous portion toward the filtration chamber 25 and accumulated on the filter medium 30 such as a paper filter. On the other hand, it is possible to obtain a mild thin coffee liquid by coarsening the coffee grain size. In this case, when the second filter 29 is moved in the a direction as shown in FIG.
7 and the porous portions 26 and 28 of the second filter 29 are aligned,
A porous portion with large holes is located, and when coffee beans are crushed, coarse particles are discharged into the filtration chamber 25.

Further, if the porous portions 26 and 28 of the first filter 27 and the second filter 29 are positioned so as to overlap the holes, the grain size can be changed arbitrarily.

As another embodiment, the first filter 27 and the second filter 29 may have the same porous portion having an arbitrary size.

When coffee grounds are deposited in the filtration chamber 25 in this way, the drive motor 22 is stopped and the heater 41 is switched on. When the heater 41 is energized, the water in the water pipe 46 is heated to start boiling locally, and the tank 44 is heated by the boiling pressure.
On the side, a check valve 45 is provided so that the hot water outlet chamber 48 does not flow back.
And is poured into the hot water receiving portion 37 of the lid 34 through the discharge port 49 to pour hot water into the coffee powder, and the coffee liquid is stored in the coffee receiving container 33.

EFFECTS OF THE INVENTION According to the present invention as is apparent from the description of the above examples, in the blowing method in the crushing of coffee beans, by changing the holes of the porous part of the filter to pass,
By selecting an appropriate particle size, the coffee concentration can be changed, and the coffee liquid can be extracted according to the taste of the user. In particular, in the present invention, the crushing chamber and the filtration chamber are laterally adjacent to each other in a laterally adjacent relationship, and are integrally formed. Can be washed at one time, and since the crushing chamber and the filtration chamber have a simple structure, the adhering coffee powder can be surely washed.

[Brief description of drawings]

FIG. 1 is a perspective view of an essential part of an electric coffee brewer showing an embodiment of the present invention, FIG. 2 is a view showing a filter of the electric coffee brewer, showing a state in which an opening portion is small, Fig. 3 is a view showing a state in which the opening is large, Fig. 4 is a plan view of the electric coffee brewer, Fig. 5 is a longitudinal sectional view showing the whole electric coffee brewer, and Fig. 6 is the electric FIG. 7 is a perspective view showing the whole coffee brewer, FIG. 7 is an exploded perspective view showing the whole electric coffee brewer, and FIG. 8 is an electric coffee brewer in which a conventional crushing unit and a filtering unit are integrated. It is sectional drawing of a container. 21 ... Grinding filter container, 23 ... Cutter, 24 ... Grinding chamber, 25 ... Filtration chamber, 26 ... Porous part, 27 ... First
Filter, 28 ... Porous part, 29 ... Second filter, 30 ... Filter material.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Toshio Nakamura 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (56) References JP-A-60-119915 (JP, A)

Claims (1)

[Claims] 1. A crushing chamber having a cutter for crushing coffee beans, and a crushing and filtering chamber integrally formed by arranging a crushing chamber in which a filter medium is detachably attached in a laterally adjacent relationship. The first filter having a porous portion between them is provided, and the second filter that is movable in contact with the first filter is provided so that the openness can be changed by the movement of the second filter. An electric coffee brewer equipped with the crushing filter container that is detachably attached to the main body.