JPH02237519A - Coffee maker - Google Patents

Abstract

PURPOSE:To automatically produce liquid coffee by crushing beans roasted with a roasting device after the beans are dropped into a milling extractor and are cooled with a fan, and by injecting hot water into the extractor from a hot water injector to receive the liquid coffee with a coffee server. CONSTITUTION:A roasting device 20 for drawing coffee raw-beans, a milling extractor 30 for extracting coffee from coffee beans after the beans are crushed, a fan 40 for feeding air into the extractor 30, a hot water injector 50 for injecting high-temperature water into the extractor 30, and a coffee server 60 for receiving the coffee extracted with the extractor 30 and percolated, are arranged. Then, according to a previously set procedure, the raw beans are roasted by the roasting device 20, and the roasted beans are crushed after they are dropped into the milling extractor 30 and are cooled by the fan 40, and after they are crushed, hot water is injected into the extractor 30 from the hot water injector 50, and liquid coffee percolated through the extractor 30 is received by the coffee server 60. As its result, the coffee can be automatically produced through the coffee raw-beans.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a coffee maker, and particularly to a coffee maker that can fully automatically produce coffee from green coffee beans.

BACKGROUND ART AND THEIR PROBLEMS> As this type of coffee maker, a coffee maker that uses roasted coffee beans to perform everything from grinding to extraction of coffee liquid has been proposed. However, with these conventional coffee makers, it is usually necessary to purchase roasted coffee beans in advance, and the taste and aroma of the coffee deteriorates if the roasted beans are not used for a week. However, there has been a problem in that users are unable to drink coffee with good taste and aroma when they want to drink coffee.

SUMMARY OF THE INVENTION An object of the present invention is to provide a coffee maker that can automatically produce coffee from green coffee beans in a short time by eliminating the drawbacks of the conventional coffee maker.

Means for Solving the Problems> The coffee maker of the present invention includes a roaster that roasts green coffee beans, and an extractor that also serves as a mill that grinds the coffee beans and extracts coffee from the ground coffee beans. a blower that blows air into the extractor that also serves as a mill; a steamer that pours high-temperature water into the extractor that also serves as a mill; and a coffee that has been extracted and filtered by the extractor that also serves as a mill. and the roasting θ according to a predetermined order.
j! Roast green beans in a container, drop the roasted beans into the extractor that also serves as a mill, cool them with the blower, and then grind them. After grinding, pour hot water from the hot water pourer into the extractor that also serves as a mill. The first feature is that the coffee server is configured to receive the coffee liquid filtered by the extractor that also serves as a mill.

In addition to the first feature, the coffee maker of the present invention has a second feature in that the stirring blade that rotates along the inner bottom surface of the roaster is made of an elastic spring body.

Further, in addition to the first feature or the second feature, the coffee maker of the present invention has a feature that the stirring blade of the roaster is rotated on the drive source side by rotation of a spring body fixed to the shaft on the drive source side. A third feature is that this is performed by pushing and rotating a spring body provided on the shaft on the side of the stirring blade that is separated from the shaft.

Further, the coffee maker of the present invention includes the first, second, and third coffee makers.
In addition to any of the above features, a fourth feature is that a ring-shaped far-infrared heater is provided at the top of the roaster, and a shielding member is provided to alleviate the radiant heat downward from the center of the ring of the heater. It is a feature.

Further, in addition to any of the first to fourth features, the coffee maker of the present invention has a fifth feature that a conical guide is provided at the center of the upper part of the extractor that also serves as a mill and below the pouring spout. It is a feature of

In addition to the first to fifth features, the coffee maker of the present invention has a sixth feature in that the air from the blower is configured to rise from the bottom of the extractor that also serves as a mill through a filter. .

<Operation> According to the first feature of the present invention, when the required green coffee beans are put into the roaster, they are automatically roasted and cooled.
Coffee can be obtained by grinding, evaporating, extracting and filtering. Furthermore, since the beans are once cooled after roasting, the aroma is retained well and the grinding is performed evenly.

Furthermore, according to the second feature, since the stirring blade is made of an elastic spring body, even if beans are caught between the stirring blade and the inner bottom surface of the roaster, the stirring blade can be bent appropriately. , it comes off easily.

Further, according to the third feature, the heat on the roaster side that is transmitted to the drive source side through the shaft of the stirring blade is blocked. Similarly, since the spring body is pushed and moved by the spring body, it is possible to rotate with sufficient margin by utilizing the restoring force of the spring body.

According to the fourth feature, the beans that gather in the center of the roaster below the center of the ring tend to be roasted more excessively than the beans in the surrounding area. By providing the shielding member, this tendency is eliminated and the beans in the center and the periphery are roasted uniformly.

According to the fifth feature, a conical guide is provided at the center of the upper part of the extractor that also serves as a mill, below the pouring spout, so that the poured hot water flows along the conical guide. It is smoothly introduced into the extractor without bouncing. In addition, the guide prevents the beans from flying out of the extractor during grinding.

Furthermore, according to the sixth feature, since the wind from the blower blows up from below against the roasted beans that have been dropped into the extractor, the beans are quickly cooled.

<Example> Fig. 1 is a longitudinal sectional view of a coffee maker showing an embodiment of the present invention, Fig. 2 is a plan view, and Fig. 3 is a sectional view taken along line AA in Fig. 1.
FIG. 4 is an overall perspective view.

A roaster 20 is provided in the upper part of the exterior case 10, and an extractor 30 which also serves as a mill is provided below it. A blower 40 for blowing air into the extractor 30 is provided, and a water pourer 50 for pouring high-temperature water into the extractor 30 is also provided. A coffee server 60 is placed to receive the extracted and filtered coffee.

70 is an operation panel. Further, a smoke and deodorizer 80 is provided on the ceiling of the exterior case IO.

The roaster 20 is a device for roasting green coffee beans, and is equipped with a ring-shaped far-infrared heater 22 in the upper part of the internal space of a circular container 21, and a stirring blade that rotates along the inner bottom surface. It has 23. This stirring blade 23 is constituted by a coiled rod as an elastic spring body. Further, the shaft 24 to which the stirring blade 23 is attached is erected at an appropriate height from the bottom, and a shielding member 25 extending in the shape of a hat is provided at the upper end thereof. The shaft 24 on the stirring blade 23 side is the shaft 2 on the drive source 26 side consisting of a motor and a speed reducer.
7, and are configured to engage with each other by spring bodies 24a and 27a fixed to respective shafts 24. An opening/closing lid 21a is provided on the ceiling of the container 2l.
A door 2lb for discharging beans is provided in a portion from the bottom to the lower end of the container 2l. The opening/closing M 21 a is a lid for dropping beans into the container 21, and is connected by a shaft 28 to the opening/closing lid 11 provided on the ceiling of the outer case 10, and the opening/closing lid 11 can be turned through a finger hole 11a. Accordingly, the opening/closing M 21 a of the container 21 is also opened. Further, the door 2lb for discharging beans is fixed to the advancing/retracting rod 28a of the solenoid 2, and when the advancing/retracting rod 28a retreats, the door 2lb
lb is opened.

The extractor 30 that also serves as a mill is a device that grinds the beans roasted by the roaster 20 and extracts and filters coffee liquid from the ground beans. Zero body 3l of extractor 30 that also serves as a mill
is a cylindrical container with a bottom, and is provided below the opening from which the beans from the roaster 20 fall. The upper opening of the zero body 3l is formed in the shape of a mortar with an inward flange 32 extending diagonally downward, and is located at the upper center of the inner space of the main body 3l, below the pouring port 5l of the pouring device 50, which will be described later. has a conical guide 33
is provided. Further, the bottom of the main body 3l is a double bottom, and a removable filter 34 is provided in the middle bottom.

In this embodiment, a stainless steel mesh plate is used as the filter 34. 35 is a crushing blade part, and a driving source 36
It is detachably attached to the shaft 36a and rotates. The double bottom bottom 31a of the main body 3l is inclined in one direction, and a coffee liquid outlet pipe 37 is integrally formed in the extending direction of the slope. The outlet pipe 37 is provided with a liquid drop port 37a to the coffee server 60. Further, the distal end of the outlet pipe 37 is configured to be removably fitted to the air blower 40, and the air outlet 37 is connected to the air blower 40.
b.

The blower 40 is fixed inside the outer case 10, and an air intake port 12 from the outside is provided in the outer case 10.

The hot water pourer 50 includes a cartridge type water tank 5l shown in Fig. IjA3, a pipe line 53 that carries water from the water tank 51 to a pouring port 52, and an instantaneous heat exchanger installed in the middle of the pipe line 53. It consists of a section 54. In the embodiment, the heat exchange section 54 is a mounting table 13 on which the coffee server 60 is mounted.
It is arranged on the back surface side, that is, on the lower surface side, and consists of a heater 54a and a heat exchange coil 54b.

The operation panel 70 is an operation panel for a control section (not shown), and 71 is an operation switch, 72 is a roasting time timer, and 73 is a mill time timer. Further, 74 is an automatic button, and 75 is an operation lamp. The roasting time timer 72 is a timer for determining the optimum roasting time for beans for the number of people. The mill time timer 73 is also a timer for setting the grinding time to match the number of beans. Furthermore, by pressing the button with the number drawn thereon, the automatic button 74 can automatically set the optimum roasting time and grinding time to obtain the amount of coffee corresponding to that number. By setting only the roasting time timer 72, only green beans can be roasted. Further, by setting only the mill time timer 73, it is possible to work from roasted beans.

Further, when water is not put into the water tank 5L, the heater 54a is not turned on, so that it can be used only for grinding beans.

Note that the coffee server 60 is of course removable, but the extractor 30 that also serves as a mill is also attached to the blower 40.
It can be attached and detached from the exterior case 10 without being removed.

Next, the operation will be explained. Now, if you want to make coffee for three people, for example, open the lid 1l and put 30g of green beans into the roaster 20, add a predetermined amount of water to the water tank 51, and set it. and two timers 72,
73 or after pressing the automatic button 74, when the operation switch 71 is pressed, the device starts fully automatic operation. First, the far-infrared heater 22 of the roaster 20 is turned on, and the drive source 26 is turned on. Thereby, the green beans thrown in are roasted by the heater 22 without being stirred by the stirring blade 23. The shaft 24 on the stirring blade 23 side and the shaft 27 on the drive [26 side]
Since it is separated from the drive source 2, the heat on the roaster 20 side is transferred to the drive source 2.
6 can be prevented from being transmitted. Since the rotation on the drive source 26 side is transmitted to the stirring blade 23 through the engagement of the two spring bodies 27a and 24a, the rotation can be performed smoothly.

In addition, since the stirring blade 23 is a coiled rod serving as an elastic spring body, when the beans are stirred, the beans are removed from the stirring blade 23.
Even if it gets caught between the stirring blade 2 and the bottom,
With the elasticity of 3, you can easily resolve such a situation,
Maintain good stirring. In addition, since the moving speed of the beans by the stirring blade 23 is slow in the center of the container, the beans that gather in the center tend to be roasted more than the other surrounding beans. By providing this, the roasting in the center is moderated appropriately, and the whole area is roasted uniformly.

When roasting for a predetermined period of time, for example 8 minutes, is completed, the solenoid 28 opens 5t2lb for a certain period of time, and the stirring blade 23
The roasted beans are transferred to the zero body 3 of the extractor 30 which also serves as a mill.
Fallen within 1. At the same time, the blower 40 is activated and blows air into the zero body 31 for several minutes, for example, to cool the beans. The air from the blower 40 passes through the outlet pipe 37 and passes through the filter 3.
4. Blow through from the bottom to the top to cool the beans. Since the air blows up from below to cool the beans, the beans are effectively and quickly cooled down. By cooling the beans quickly, the aroma is retained in the beans.

Furthermore, the beans are evenly ground during grinding after cooling.

When the air blowing by the air blower 40 is finished, the grinding blade portion 35 of the extractor 30 which also serves as a mill is rotated, and the roasted beans are ground for a period of about ten seconds to several tens of seconds.

When pulverization is completed, the heater 54a of the heat exchange part 54 of the pourer 50 is turned on, and the water in the heat exchange coil 54b is heated and moves through the pipe 53 toward the pouring port 52, and from the pouring port 52, for example, 70 ℃ warm water is poured. The poured hot water flows along the upper surface of the guide 33 without splashing due to the conical guide 33, and is smoothly introduced into the extractor 30. As a result, coffee is extracted from the ground beans and filtered through the filter 34.

When the water in the water tank 51 runs out, the heater 54a is turned off. This time is about 5 to 6 minutes. Note that the heater 54a can be maintained in a warm state using a heat retention button (not shown). The coffee liquid dripped by the filter 24 passes through the outlet pipe 37 and drips into the coffee server 60.

It takes about 15 minutes from adding green beans to finishing dripping.

Note that the roaster 20 may be provided with a slit at the bottom of the container 2l, in addition to the door 2lb for discharging beans, for removing roasting residue.

Effects> The coffee maker of the present invention has the above configuration, and according to the configuration of claim 1, it is possible to fully automatically obtain coffee from green coffee beans, which is very convenient. Green beans are very economical as they are cheap and have a good shelf life. In addition, since the raw beans are roasted and extracted in the required amount each time, the aroma and taste are very good. Similarly, the amount of coffee extracted per unit bean is large and economical. In addition, since the beans are cooled with a blower after roasting, the aroma of the beans is better preserved, and it is possible to grind the beans evenly, further improving the extraction rate.

According to the second aspect of the present invention, in addition to the effects of the first aspect of the present invention, beans can be stirred very smoothly because the stirring blades are made of elastic spring bodies. Therefore, roasting can be done evenly.

According to the structure of claim 3, in addition to the effects of the structure of claim 1 or 2, the shaft of the stirring blade is separated from the shaft on the drive source side, so that heat conduction to the drive source side is reduced. This can be prevented and the durability of the drive source can be increased. Further, since the rotation of the drive source side is transmitted to the stirring blade side through the spring body, there is a margin for rotation of the stirring blade, and stirring can be performed smoothly.

Further, according to the structure of claim 4, in addition to the effects of any one of claims 1 to 3, the shielding member can reduce the roasting of beans that gather at the center of the roaster, and the beans can be roasted uniformly throughout the roaster. It can be roasted.

Further, according to the configuration of claim 5, in addition to the effects of any of the configurations of claims 1 to 4, since a conical guide is provided, the hot water falling from the pouring spout 52 can be smoothly flowed without splashing. It can be evenly introduced into the extractor. It also prevents the beans from flying out when grinding the beans.

Further, according to the structure of claim 6, in addition to the effects provided by any of the structures of claims 1 to 5, the air from the blower is blown upward from the bottom through the filtration filter. It can be shown that the beans can be cooled quickly, so that the flavor of the beans can be better preserved and the working time can be shortened.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional view of a coffee maker showing an embodiment of the present invention, FIG. 2 is a plan view, and FIG. 3 is a sectional view taken along line A-A in FIG. 1.
FIG. 4 is an overall perspective view. 10: Exterior case 20: Roaster 22: Far infrared heater 23: fl stirring blade 24: Ijl stirring blade side shaft 24a: Spring body 25: Shielding member 26: Drive source 27: Drive source side shaft 27a: Spring body 30: Extractor that also serves as a mill 33: Conical guide 34: Filtration filter 37: Outlet pipe 40: Air blower 50: Water heater 60: Coffee server 70: Operation panel 121

Claims (6)

[Claims] (1) A roaster that roasts green coffee beans, an extractor that also serves as a mill that grinds coffee beans and extracts coffee from the ground coffee beans, and an extractor that also serves as a mill, and an extractor that also serves as a mill. It has an air blower for sending, a water pourer for pouring high-temperature water into the extractor that also serves as a mill, and a coffee server that receives filtered coffee extracted by the extractor that also serves as a mill, and in a predetermined order. Therefore, roasting green beans in the roaster,
The roasted beans are dropped into the extractor that also serves as a mill, are cooled with the blower, and then ground. After the grinding, hot water is poured from the pourer into the extractor that also serves as a mill, and the beans are filtered with the extractor that also serves as a mill. A coffee maker characterized in that the coffee maker is configured to receive brewed coffee liquid in the coffee server. (2) The coffee maker according to claim 1, wherein the stirring blade that rotates along the inner bottom surface of the roaster is made of an elastic spring body. (3) The rotation of the stirring blade of the roaster is caused by the rotation of a spring body fixed to the shaft on the drive source side, which is provided on a shaft on the stirring blade side that is separated from the shaft on the drive source side. 3. The coffee maker according to claim 1, wherein the spring body is pushed and rotated. (4) A ring-shaped far-infrared heater is provided in the upper part of the roaster, and a shielding member is provided for mitigating radiant heat downward from the center of the ring of the heater. coffee maker. (5) The coffee maker according to any one of claims 1 to 4, wherein a conical guide is provided at the center of the upper part of the extractor that also serves as a mill and below the pouring spout. (6) The coffee maker according to any one of claims 1 to 5, wherein the air from the blower is configured to rise from the bottom of the extractor that also serves as a mill through a filtration filter.