JPH0497714A - Coffee maker - Google Patents

Abstract

PURPOSE:To remove fine powders in a mill chamber, perfectly from, after coffee is crushed into powders, and obtain tasty coffee by turning a heater circuit and a mill circuit ON/OFF several times with a timer switch, and by switching the heater circuit and the mill circuit to each other automatically several times. CONSTITUTION:A hopper-shaped basket 15 for retaining a paper filter 15a for filtering coffee, a mill chamber 31 for crushing coffee beams, a hot water feeding means 20 for heating water after powders from the mill chamber 31 are dropped into the basket 15 and discharging the water from the upper section of the mill chamber 31, a water tank 24 for storing water to be fed to the hot water feeding means 20, a vessel 10 for receiving coffee extracting liquid to be dropped from the lower section of the basket 15, and a heat retaining means 7 with the vessel 10 to be mounted on, are arranged. Then, with a timer switch 43, the heater circuit of the hot water feeding means 20 and the mill circuit of the mill chamber 31 are respectively ON/OFF-controlled. As a result, fine powders in the mill chamber are perfectly removed from after the coffee is crushed into powders and a clean coffee maker can be obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a coffee maker, particularly to an easy-to-use coffee maker that keeps a mill chamber clean at all times after grinding coffee beans.

[Prior Art] As a conventional coffee maker, there is one shown in FIG. 5, for example.

In FIG. 5, the outer shell of the coffee maker (1) is composed of a main body case (2) and a bottom M (3). A heating plate (4) is provided at the bottom of the main body case (2), and a sheathed heater (5) for heating is installed on this heating plate (4).
) and a water vibrator (6) through which heated water passes are each installed.

A heat insulating plate (7) is in close contact with the upper surface of this heat plate (4), and this heat insulating plate (7) is attached to the main body case together with the heat plate (4) via a backing (8) and a holder (9). (2) by screw means (not shown). and,
A container (10) made of, for example, glass is placed on the heat insulating plate (7), and a lid (11) is attached to the upper opening of the glass container (10).

In addition, a band (12) is attached to the lower side of the glass container (10).
> (indicated by a broken line in the figure) is fitted, and a screw means (
J4).

A basket (15) is arranged above the glass container (10). This basket (15) is formed in the shape of an inverted truncated conical funnel, and a paper filter (15a) for coffee maker filtration is attached inside the basket (15). Coffee beans (15b) that have been ground to an appropriate particle size with a non-grinding mill are input.

The bottom of the basket (15) is provided with a hole (19), and the outside of the bottom of the basket is provided with a hole (19).
) is provided with a valve (18) to close it. This valve (
18) is an arm (16) attached to the bottom of the basket.
), and a spring (1) is formed between the other end of this arm (16) and the side of the basket (15).
7) is provided. The arm (16) is rotatable near the center of the joint, and the valve (18) is configured to close the lid (11) of the glass container (lO) when the basket (15) is placed on the lid (11). (11) Upper end or arm (16)
By pushing up the base end against the spring (17), it retreats downward and opens the hole (19).

A part of the main body case (2) mentioned above rises upward to form a vertical part (2A), and from this vertical part (2A) the upper cover (22> and the lower cover (22) extend upward from the basket (15). 23) is provided.

A basket (15) is attached to the lower cover (23), and a steam hole (B) for releasing steam during dripping is provided through the upper cover (22).

One of the water vibrators (6) in the hot plate (4) described above is extended as a hot water vibrator (21) and is installed inside the vertical part (2 people) and in the space between the upper cover (22) and the lower cover (23). The hot water outlet (20) is connected to the substantially central portion of the lower cover (23) through the bottom cover (23), and a hot water outlet (20) is formed toward the basket (15).

On the back side of the vertical part (2 people) mentioned above, there is a water tank (24
), and the upper part of this water tank (24) is closed with a lid (25).

A valve (26) is provided at the bottom of this water tank (24). This valve (2B) is formed so that it is closed when the water tank (24) is removed from the main case (2) of the coffee maker (1) and opened when it is attached to the main case (2). Occasionally, only water leakage occurs.

The lower body case side of the valve (26) is connected to the other end of the water pipe (6) inside the hot plate (4), and the check valve (27)
) is provided. This check valve (27) is connected to the hot plate (4).
) to prevent the water in the water pipe (6) heated by the water pipe (6) from flowing back into the water tank (24).

The operation of the above-mentioned conventional coffee maker will be explained.

Water in the water tank (24) is supplied to the hot plate (4) via a valve (26).
) is introduced into the water vibrator (6).

On the other hand, a sheathed heater (5
), and the sheathed heater (5) generates heat. Due to this heat generation, the water in the water vibrator (6) boils and the heat insulating plate (7) is heated via the hot plate (4).
The glass container (10) is kept warm.

The hot water in the water pipe (6) falls into the basket (15) from the hot water outlet (20), permeates into the coffee beans (15b), and extracts coffee liquid. The coffee liquid is filtered by the paper filter (15a) and falls into the glass container (10) through the hole (19).

The coffee beans (15b) are ground to an appropriate particle size in a mill (not shown) and then put into a paper filter (15a) in the basketball soto (15).

[Problems to be Solved by the Invention] Conventional coffee makers as described above include a method in which a grinding section (mill section) is attached to the main body, and a method in which coffee beans are ground in the mill section and then transferred to a basket, and a method in which the power of the mill and the lid are - There are two methods: one is to use the rotational force of the other to transfer the powder horizontally to the coffee maker, and the other is to run hot water from the grinding process into the mill chamber to clean the mill chamber after grinding. There were problems such as the difficulty of completely removing the fine coffee particles in the mill room.

This invention was made to solve the above-mentioned problems, and aims to provide an easy-to-use coffee maker that can completely remove fine powder from the mill chamber after grinding coffee and produce delicious coffee.

[Means for Solving the Problems] After grinding coffee beans, the coffee maker according to the present invention allows dripping hot water to fall into the mill chamber, and turns the hot water supply means circuit and the mill circuit on and off several times.
j control.

[Function] The coffee maker according to the present invention is provided with a means for controlling each of the heater circuit and mill circuit of the hot water supply means, so that the heater circuit, which is the hot water supply means, is ONJ for several tens of seconds after the coffee beans are ground. , immediately after the heater circuit rOPF J, turn the mill on for a few seconds.
By doing so, the cutter for the mill rotates while hot water is being blown into the mill chamber by preheating the heater immediately after dripping, so hot water is evenly sprayed into the mill chamber where fine powder remains after grinding coffee beans. It can clean the mill room. By repeating the above control several times, the above operation can be performed.

Furthermore, the coffee inside the paper filter in the basket stays evenly longer than before, making it more delicious.

[Example] Hereinafter, an example of the present invention will be described based on FIGS. 1 to 4.

1 and 2 are respectively a perspective view and a partially exploded view of a coffee maker according to an embodiment of the present invention, FIG. 3 is a sectional view of a coffee maker according to an embodiment of the present invention, and FIG. It is a control explanatory diagram of the timer of the conventional coffee maker.

In FIGS. 1 to 3, (1) to (27) are exactly the same as the conventional coffee maker shown in FIG. 5, so their explanation will be omitted, and only the different points will be explained.

A basket (15) is arranged above the glass container (10) so as to rotate about a rotation axis (A).

In addition, a paper filter (15a) for coffee maker filtration is attached to the inside of the basket (15).
15) is fitted with a basket lid (28) with a seal (28a). (28b) is a safety switch push part provided on the basket lid (28).

In the present invention, the upper part of the main body case (2) is equipped with an electric motor (
29) and a mill chamber (31) containing a cutter (30), and a thin hole (32) is formed in the lower surface.

At the top of the mill chamber (31), there is a removable lid (33) for putting in the coffee beans (15b) and an inner lid (34) made of metal parts made of stainless steel, which is a material with good thermal conductivity. Both have steam holes (B).

One of the water vibrators (6) in the hot plate (4) described above extends perpendicularly to the hot water supply vibrator (21), and is connected to the hot water outlet (2).
0) is formed toward the inside of the mill chamber (31).

The outer periphery of the back side of the electric motor (29) mentioned above is covered by a box-shaped main body, and a water tank (24) is placed inside.

The top of the water tank (24) has a lid (25) that is locked to the main body by a locking part with an R-shaped tip for easy attachment and removal, allowing the lid (25) to rotatably close the top of the water tank (24). ing.

(35) is a safety switch section, which is composed of an upper movable plate (37) provided with a contact (36) and a lower movable plate (38).

(39) is a push rod that interlocks with the safety switch push part (28b) provided on the basket lid (28).
) is provided with a spring (40) at the top for buffering purposes.

(41) is a notch for locking the basket, and the locking part (42
). The locking part (42) is connected to the safety switch (3).
5).

(43) is a timer switch that automatically switches between the heater of the hot water supply means and the mill circuit.

Next, the operation will be explained based on the drawings.

A paper filter (15a) is set in the rotating basket (15), and a basket lid (28) is attached.

A seal (28a) with a low cutout in the front is attached to the top of the basket lid (28), so the basket (28)
15) also smoothly comes into close contact with the outer periphery of the small hole (32) below the mill chamber (31) during rotation. Note that the basket (15) is securely locked in the basket locking notch (41) and a locking part (42) provided below the mill chamber (31). Also, the safety switch (35) is connected to the basket lid (28).
The power will not be turned on unless the opening/closing lid (33) is attached. The coffee beans (15b) introduced into the mill chamber (31) are passed through a cutter (29) connected to an electric motor (29).
30), passes through the small hole (32) and seals (2).
8a) and is deposited on the paper filter (15a) in the basket (15).

Also, the water in the water tank (24) passes through the valve (26) to the hot plate (
4) into the water pipe (6).

On the other hand, a sheathed heater (5
) generates heat. Due to this heat generation, the water in the water pipe (6) rises and flows through the heat plate (4) to the heat insulating plate (7).
is heated and the glass container (10) is kept warm.

The hot water in the water vibrator (6) falls from the hot water outlet (20) into the basket (15) through the mill chamber (31), the small hole (32), the seal (28a), and the basket lid (28). The coffee liquid is extracted by permeating the coffee beans (15b). The coffee liquid is filtered by a paper filter (15a) and falls into the glass container (10) through the hole (19).

The coffee maker of the present invention is characterized by being equipped with a timer switch (43) that automatically switches between the heater of the hot water supply means and the mill circuit. An example of heater control will be shown.

First, in the case of the conventional example, as shown in the figure, the mill circuit energization 3
0 seconds → heater circuit energization approximately 50 seconds (drip) - approximately 50 seconds
Seconds later - heater circuit energized for about 2 minutes (drip) → heat retention 12
Seconds - Keep warm for 12 seconds (repeated) In this case, it is not possible to completely remove the fine coffee powder in the mill chamber after the coffee is ground.

On the other hand, in the coffee maker of the present invention, as shown in the figure, the mill circuit is energized for 30 seconds, the heater circuit is energized for about 50 seconds (drip), the mill circuit is energized for about 5 seconds (pause), the mill circuit is energized for about 12 seconds, and the heater circuit is energized for about 12 seconds. Energize for about 15 seconds → Mill circuit energize for about 12 seconds - Heater circuit energize for about 2 minutes (drip) - Heat retention 1
2 seconds - Keep warm for 12 seconds (repeat) In this case, the cutter for the mill was rotated and cleaned while hot water was being blown into the mill chamber by preheating the heater immediately after dripping.
It is possible to completely remove the coffee powder in the mill chamber after coffee grinding.

As described above, the timer switch (43) turns the heater circuit and mill circuit several times rONJ rOFF J, and automatically switches the heater circuit and mill circuit several times to completely remove the fine powder in the mill chamber after coffee is ground. You can get a clean coffee maker by removing it.

In this embodiment, the heater circuit and the mill circuit were switched by a timer switch, but other means may be used as long as they can turn on the coffee maker's hot water supply circuit and the mill circuit. good.

Effects of the Invention As described above, the coffee maker according to the present invention is provided with a means for controlling the heater circuit and the mill circuit, which are hot water supply means, several times after grinding coffee beans. Since the cutter for the mill is rotated while hot water is being blown into the mill chamber by preheating, there is no fine powder in the mill chamber, resulting in a coffee maker that is always clean and easy to use.

[Brief explanation of the drawing]

1 and 2 are respectively a perspective view and a partially exploded view of a coffee maker according to an embodiment of the present invention, FIG. 3 is a sectional view of a coffee maker according to an embodiment of the present invention, and FIG. FIG. 5 is a diagram illustrating the control of a timer in a conventional coffee maker, and is a sectional view of the conventional coffee maker. In the figure, (1) is the coffee maker, (2) is the main case, and (3) is the coffee maker.
) is the bottom cover, (4) is the heat plate, (5) is the sheathed heater, (
6) is a water vibrator, (7) is a heat insulation board, (8) is a Patsukin 7
, '(9) is a holder, (lO) is a glass container, (11
) is the lid, (12) is the band, (13) is the handle, (14)
is screw means, (I5) is basket (rotary type), (1
5a) is a paper filter, (15b) is a coffee bean, (I
6) is the arm, (17) is the spring, (18) is the valve,
(19) is a hole, (20) is a hot water outlet, (21) is a hot water supply pipe, (24) is a water tank, (25) is a lid, (2B) is a valve, (27) is a check valve, (28) ) is the basket lid, (2
ga) is a seal, (28b) is a safety switch push part, (2
9) is the electric motor, (30) is the cutter, (31) is the mill chamber, (32) is the small hole, (33) is the opening/closing lid, (34) is the inner lid, (35) is the safety switch, (36) is Contact, (37)
(38) is the upper movable plate, (38) is the lower movable plate, (39) is the push rod, (40) is the spring, (41) is the notch, (42) is the locking portion, and (43) is the timer switch. In addition, in the figures, the same reference numerals indicate the same or equivalent parts.

Claims (1)

[Claims] A funnel-shaped basket for holding a paper filter for coffee filtration, a mill chamber for grinding coffee beans, a hot water supply means for heating water after dropping the powder from the mill chamber into the basket and blowing it out from the upper part of the mill chamber; A coffee maker comprising a water tank for storing water to be supplied to the hot water supply means, a container for receiving coffee extract dripping from below the basket, and a heat retaining means on which the container is placed, the heater circuit of the hot water supply means and a means for controlling each of the mill circuits in the mill chamber "ON" and "OFF".