JPH0710679Y2 - Coffee making machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Field of Industrial Application) The present invention relates to a coffee maker having both functions of crushing coffee beans and extracting coffee liquid.

(Prior Art) Conventionally, as a coffee liquid extraction method, for example, a so-called drip method in which hot water is dropped from above onto coffee powder on a filter, or a case in which a case containing coffee powder is rotated while supplying hot water is called. Centrifugal extraction (espresso)
There are different methods, and the flavor and the like of the extracted coffee liquid will differ. A coffee maker shown in FIG. 4 is provided as a coffee maker that can be used in accordance with the two kinds of extraction methods and can be selectively used according to the preference of the user. This is a drip mechanism part 2 for performing drip extraction on the main body 1.
And an espresso mechanism section 3 for performing centrifugal extraction method are arranged side by side, and the user selects either one and stores the coffee grounds and water in the mechanism section, and then turns on the switch. The coffee liquor was extracted according to the preferred method.

(Problems to be Solved by the Invention) However, the above-mentioned conventional device has a large defect because it is a combination of two devices, so to speak. Since two sets of heaters (not shown) and the like are required, the number of parts is large and it is effective. In addition, since it does not have a mill function for crushing coffee beans, in order to extract the coffee liquid from the coffee beans, it is necessary to use another mill device to make coffee grounds, and then transfer this to the troublesome work. Was needed.

The present invention has been made in view of the above circumstances, and its purpose is to use both the drip method and the centrifugal extraction method, and to perform the process from crushing coffee beans to extraction without transferring the coffee powder. The purpose of the present invention is to provide a coffee making machine that is small and inexpensive.

[Structure of the Invention] (Means for Solving the Problems) A coffee making machine of the present invention is provided with a motor in the main body, and a clutch mechanism for selectively transmitting the rotation of the motor to the inner shaft or the outer shaft. A drive mechanism is provided, and an outer case, which is fixed or detachably equipped with a filter for coffee liquid filtration that acts during drip extraction, is provided in the main body, and a hot water supply mechanism that supplies hot water into the outer case is provided. Has a filter part for filtering coffee liquid, is connected to the outer shaft, and is provided with a rotating case that is detachably mounted in the outer case and is rotated by a motor while being supplied with hot water from the hot water supply mechanism during coffee liquid extraction, and is connected to the inner shaft. A crushing body for espresso, which is rotated by a motor when crushing coffee beans, is provided on the inner bottom of the rotating case, and is connected to an inner shaft, and is a drip powder that is rotated by a motor when crushing coffee beans. Body and is the rotating case to the outer case which is provided to each other can Tsukekae.

(Operation) In order to perform coffee extraction using a centrifugal extraction (espresso) method, coffee beans are stored in the rotating case with the rotating case mounted in the outer case. In this case,
First, in the crushing process, the rotation of the motor is transmitted to the espresso crushing body via the drive mechanism, and the rotation of the crushing body crushes the coffee beans to produce coffee powder. In the subsequent extraction process, the rotary case is rotated by the motor while hot water is being supplied from the hot water supply mechanism into the rotary case. As a result, the hot water to which the rotational centrifugal force has been applied passes through the coffee grounds relatively quickly, and then is extracted as coffee liquid from the filtration unit to the outside of the rotating case, that is, the outside case.

On the other hand, in order to perform the coffee liquid extraction of the drip method, the crushed body for drip is mounted in the outer case instead of the rotating case, and then the coffee beans are stored in the outer case. In this case, first, in the crushing process, the drip crushing body is rotated to crush the coffee beans, and in the subsequent extracting process, the hot water supplied into the outer case causes the coffee powder to flow in the coffee powder relatively gently. After passing, it is filtered by a filter and extracted as coffee liquor.

(Embodiment) An embodiment of the present invention will be described below with reference to FIGS. 1 to 3.

First, in FIG. 1 showing the overall structure, 11 is substantially L
The main body has a character shape, and includes a motor case portion 13 in which a motor 12 is disposed, a heating Oita 14 protruding from the lower end of the motor case portion 13 to the right in the figure, and a motor case portion 13.
An extending portion 16 that extends upward while ensuring a space for mounting an outer case 15 to be described later from above, an upper cover 17 that is located at an upper end of the extending portion 16 and is detachably attached above the outer case 15 and the like. It is configured with. Also, this body 11
A cartridge-type water storage tank (not shown) is detachably attached to the. A heater 18 and a heating pipe 19 attached to the heater 18 are arranged in the heating table portion 14, and one end of the heating pipe 19 (not shown) is connected to the water storage tank. Further, the other end of the heating pipe 19 is connected to a rising pipe (not shown) extending upward in the extending portion 16, and a hot water supply pipe 20 is connected to the upper end of the rising pipe so as to be horizontally rotatable. . Thus, the hot water supply mechanism 21 is composed of the water storage tank, the heater 18, the heating pipe 19, the rising pipe, and the hot water supply pipe 20. A heat insulating plate 22 heated by the heater 18 is provided on the upper surface of the heating table portion 14.
A coffee cup 23 and a bottle (not shown) for receiving the coffee liquid are placed on the top. on the other hand,
The motor 12 arranged in the motor case portion 13 is, for example, a commutator motor whose rotation direction is reversible, and the rotating shaft 12a is moved upward from the center of the upper surface opening portion 13a of the motor case portion 13. It is protruding. And the motor case part
A drive mechanism 24 is provided in the upper opening 13a of 13 as follows. That is, as shown in FIG. 2 and FIG. 3, the inner shaft 25 is fixed to the upper end of the rotary shaft 12a of the motor 12, and the outer shaft 26 is relatively rotatably fitted to the outer periphery of the inner shaft 25. Has been done. Joint portions 25a and 26a having a spline engagement structure are formed at the upper ends of the inner shaft 25 and the outer shaft 26, respectively, and the outer shaft 26 is formed so as to cover above the upper surface opening 13a of the motor case portion 13. A large-diameter cover portion 26b is integrally provided. Reference numeral 27 denotes a clutch mechanism, in which a coil spring 29 is wound so as to straddle a tubular base member 28 fitted to the rotary shaft 12a of the motor 12 and a lower portion of the outer shaft 26, and the coil spring 29 is The lower end of is fixed to the cylindrical base member 28. In this case, the clutch mechanism 27 is configured as a friction one-way clutch, and when the motor 12 is rotating normally, the coil spring 29 loosens with respect to the outer shaft 26 and the rotational force of the motor 12 is transmitted to the outer shaft 26. Instead, only the inner shaft 25 is rotationally driven. Further, when the motor 12 rotates in the reverse direction, the coil spring 29 is wound around the outer shaft 26 and both shafts 25, 26 are integrally driven to rotate.

In the upper portion of the drive mechanism 24 configured in this way, the outer case
15 are provided. The outer case 15 is in the form of a container having a lid 15a detachably attached to an upper portion thereof, and an extraction port 30 extending to the right side in the drawing is formed at a lower end thereof. Further, the bottom surface of the outer case 15 is formed in a gentle slope that descends toward the extraction port 30, and an opening 15b is provided at the center of the bottom surface so as to bulge upward. This outer case 15
Is attached to the main body 11 in a so-called bayonet engagement structure by inserting the lower end fitting tubular portion 15c into the upper surface portion of the motor case portion 13 and rotating the same, and at this time, the drive mechanism 24 inner shaft 25 and outer shaft 26 joint parts 25a
And 26a are located inside the opening 15b. The hot water supply port 20a of the hot water supply pipe 20 is located directly above the hot water supply port 15d formed in the central portion of the lid portion 15a. Further, the extraction port 30 is located above the heat insulating plate 22.

By the way, 31 is a rotating case, which has a lid 33 having a hot water outlet 33a at the center, for example, a bayonet, at the upper opening of a container 32 formed in a tapered surface whose inner peripheral surface expands upward. It is configured to be detachably attached by an engaging mechanism.
In this case, between the container portion 32 and the lid 33, for example, 0.
A gap of about 2 mm is formed uniformly,
This gap serves as the filtering unit 34. A drive shaft 35 that vertically penetrates the rotary case 31 (container portion 32) is rotatably supported at the bottom of the rotary case 31, and a cutter 36 as an espresso crushing body rotates at the upper end of the drive shaft 35. Case 31
It is located on the inner bottom of the and fixed by screws 37. Further, the lower end portion of the drive shaft 35 is a joint portion 35a that is fitted and connected to the joint portion 25a of the inner shaft 25. In addition, the container part 3
The lower surface of 2 is integrally formed with a tubular joint 32a that fits and connects with the joint portion 26a of the outer shaft 26, and a tubular rib 32b is further formed on the outer periphery of the tubular joint 32a. In the rotating case 31 configured as described above, the tubular joint 32a is attached to the outer shaft 2
By fitting the joint portion 35a to the joint portion 26a of 6 and the joint portion 25a of the inner shaft 25 in a coupled state, the joint portion 35a is detachably disposed in the outer case 15, as shown in FIG. When lid
The hot water outlet 33a of 33 is located directly below the hot water outlet 15d of the outer case 15.

Further, in the outer case 15, a drip unit 38 as shown in FIG. 3 can be attached instead of the rotating case 31 as described above. This drip unit 38
Is configured as follows. That is, 39 is a filter, which can be fitted into the inner lower portion of the outer case 15, and is formed of, for example, a plastic material in a porous shape. Further, a stainless mesh 39a is integrally provided on the upper surface. A drive shaft 40 that vertically penetrates the filter 39 is rotatably supported at the center of the filter 39.
At the upper end of this drive shaft 40 is a cutter 41 which is a crushing body for drip.
Are fixed by screws 42. The cutter 41 has a size corresponding to the size of the outer case 15, and is larger than the cutter 36 provided in the rotating case 31. Further, at the lower end of the drive shaft 40, the inner shaft 25
A joint member 43 that fits into and is connected to the joint portion 25a is fixed, and the joint member 43 is integrally provided with a drain cover 43a that covers the opening 15b of the outer case 15 from above. . The drip unit 38 configured as described above is detachably arranged in the outer case 15 as shown in FIG. 3 by fitting the joint member 43 to the joint portion 25a of the inner shaft 25 in a coupled state. Set up.

Next, the operation of the above configuration will be described.

When performing coffee extraction using the centrifugal extraction (espresso) method, first, as shown in FIG. 1 and FIG. 2, while water is supplied to the water storage tank and coffee beans are stored in the rotating case 31. The rotating case 31 is set in the outer case 15. Next, when an espresso operation switch (not shown) is turned on, the motor 12 is energized to rotate forward.
In this case, the rotation of the motor 12 is prevented by the clutch mechanism 27.
It is not transmitted to 26 but is transmitted only to the inner shaft 25, and the cutter 36 connected to this is rotated to crush the coffee beans. Such a crushing process is performed for a predetermined time (for example, 40 seconds) to generate coffee grounds A (see FIG. 2). After that, energization of the heater 18 is started and the motor 12
Is switched to reverse rotation. By energizing the heater 18, the water supplied from the water storage tank to the heating pipe 19 is heated to be hot water, and the hot water rises up the rising pipe by the boiling pressure and drops from the hot water supply port 20a of the hot water supply pipe 20. Become. This hot water flows through the hot water outlet 15d of the outer case 15 and the hot water outlet 3 of the rotating case 31.
It is supplied into the rotating case 31 through 3a. On the other hand, the motor
The rotation of 12 is transmitted to both the inner and outer shafts 25, 26 by the clutch mechanism 27, and the rotating case 31 rotates together with the cutter 36. As a result, the coffee grounds A in the rotating case 31 will stick to the inner wall of the rotating case 31 due to the rotational centrifugal force, and the rotational centrifugal force will be applied to the supplied hot water.
This hot water passes through the coffee grounds A relatively quickly while extracting the extract, and then only the liquid is extracted as coffee liquid from the filtering unit 34 to the outside of the rotating case 31. This coffee liquid drops down from the extraction port 30 along the inner surface of the outer case 15, and is stored and kept warm in the coffee cup 23 placed on the heat insulating plate 22. This extraction process is executed until the water in the water storage tank is completely exhausted.

On the other hand, in order to perform the drip-type coffee liquid extraction, the rotating case 31 is removed and the drip unit 38 is attached to the outer case 15.
Set inside as shown in FIG. Then, water is supplied into the water storage tank and the coffee beans are stored inside the outer case 15, that is, on the filter 39. Next, when a drip operation switch (not shown) is turned on, the motor 12 is energized to rotate normally. The normal rotation of the motor 12 is transmitted to the cutter 41 via the inner shaft 25, and the rotation of the cutter 41 crushes coffee beans. Such a grinding process is executed for a predetermined time (for example, 30 seconds) to generate coffee grounds B (see FIG. 3), and the motor 12 is cut off. After that, the energization of the heater 18 is started, the hot water generated by the hot water supply mechanism 21 begins to drip from the hot water supply port 20a, and this hot water is supplied into the outer case 15 from the hot water supply port 15d. . This hot water relatively slowly passes through the coffee powder B on the filter 39 while extracting the extract, and is filtered by the filter 39 to extract the coffee liquid from the extraction port 30.

According to the present embodiment as described above, both the centrifugal extraction method and the drip method can be selected by a single device by simply replacing the rotating case 31 with the drip unit 38, depending on the user's preference. Can be used as desired. Besides, it has a mill (crushing) function that is not available in the past.
In the case of the centrifugal extraction method, it is possible to crush and extract the coffee beans in the rotating case 31 and in the outer case 15 in the case of the drip method respectively, so it is a troublesome work such as transferring the coffee powder. Is unnecessary. Especially in the case of the centrifugal extraction method, the cutter 36 is driven by one motor 12.
Since the rotating case 31 and the rotating case 31 can be selectively rotated, crushing and extraction can be automatically performed with a simple configuration. Since the motor 12, the hot water supply mechanism 21, the heater 18, the outer case 15 and the like are commonly used for both extraction methods, it is as if two devices like the conventional one were simply combined into one. Unlike the above, the structure is simple, the number of parts is small, the size can be reduced, and the manufacturing cost can be reduced.

In the above embodiment, the drip unit 38 in which the filter 39 and the cutter 41 are integrated is replaced with the rotating case 31, but the filter and the drip crushing body may be separately mounted, In this case, the filter may be configured to be fixedly attached to the inner bottom portion of the outer case.

Besides, the present invention is not limited to the above-mentioned embodiment, and various modifications can be made without departing from the scope of the invention.

[Effects of the Invention] As is clear from the above description, according to the coffee maker of the present invention, both the drip method and the centrifugal extraction method can be freely used and the coffee beans are crushed and extracted. It is possible to automatically perform the above steps without transferring the coffee grounds, and further, it is possible to achieve miniaturization and to manufacture at low cost, which is an excellent effect.

[Brief description of drawings]

1 to 3 show an embodiment of the present invention. FIG. 1 is an overall vertical side view of the present invention, and FIG. 2 is an enlarged vertical side view of essential parts showing a mode of use in a centrifugal extraction system, FIG. 3 is an enlarged vertical side view of an essential part showing a usage state in the drip system,
FIG. 4 is an overall perspective view showing a conventional example. In the drawing, 11 is a main body, 12 is a motor, 15 is an outer case, 21 is a hot water supply mechanism, 24 is a drive mechanism, 25 is an inner shaft, 26 is an outer shaft, 27 is a clutch mechanism, 29 is a coil spring, 31 is a rotating case. , 34
Is a filter, 36 is a cutter (crushing body for espresso), 38 is a drip unit, 39 is a filter, and 41 is a cutter (crushing body for drip).

Claims (1)

[Scope of utility model registration request] 1. A drive mechanism including a motor provided in a main body, a clutch mechanism having an inner shaft and an outer shaft for selectively transmitting rotation of the motor to an inner shaft or an outer shaft, and the main body. An outer case that is fixedly or detachably provided with a filter for coffee liquid filtration that is provided inside and that acts during drip extraction, a hot water supply mechanism that supplies hot water into the outer case, and a coffee liquid filtration filter on the outer peripheral portion. A rotary case that has a filtering part and is detachably provided in the outer case, is connected to the outer shaft in a mounted state, and is rotated by the motor while being internally supplied with water from the hot water supply mechanism during coffee liquid extraction; An espresso crushing body that is provided on the inner bottom of the rotating case in a state of being connected to the inner shaft and that is rotated by the motor when crushing coffee beans, and the rotating case inside the outer case. Replacement capable provided coffee maker comprising; and a drip for grinding bodies which are rotated by the motor when coupled ground coffee beans in said shaft in the mounting state.