CN112336199A

CN112336199A - Coffee machine

Info

Publication number: CN112336199A
Application number: CN202010748470.1A
Authority: CN
Inventors: 佐川昌幸
Original assignee: Panasonic Intellectual Property Management Co Ltd
Current assignee: Panasonic Intellectual Property Management Co Ltd
Priority date: 2019-08-06
Filing date: 2020-07-30
Publication date: 2021-02-09
Also published as: JP2021023608A

Abstract

The present invention is a coffee machine, which has: a water container for containing water; a bean storage part for storing coffee beans; grinding the blade; a powder storage part for storing coffee powder; an input section; a detection unit; and a water supply section. The grinding blade is driven and rotated in the bean storage portion to grind coffee beans and produce coffee powder. The input unit is configured to allow a user to input information related to the amount of coffee extracted by the powder storage unit. The detection unit detects information on at least one of a volume of the coffee beans and a weight of the coffee beans stored in the bean storage unit. The water supply unit supplies water in the water container to the powder storage unit based on the information on the amount of coffee input to the input unit and the information detected by the detection unit. According to the present invention, coffee of an appropriate concentration can be extracted according to the type and roasting degree of coffee beans.

Description

Coffee machine

Technical Field

The present invention relates to a coffee maker capable of extracting coffee from the state of coffee beans in a fully automatic manner.

Background

As a conventional coffee machine, for example, japanese patent application laid-open No. 2008-256 discloses a coffee machine including: all steps from a step of grinding coffee beans by a grinding blade to generate coffee powder to a step of injecting hot water into the coffee powder to extract coffee are automatically performed.

Disclosure of Invention

Coffee is a very preferred beverage. Therefore, coffee machines are required to extract coffee in accordance with various preferences. In recent years, various kinds of coffee beans are distributed in the market and can be easily obtained. In the conventional coffee machine, there is still room for improvement from the viewpoint of extracting coffee of an appropriate concentration depending on the kind and roasting degree of coffee beans.

The invention aims to provide a coffee machine capable of extracting coffee with proper concentration according to the type and roasting degree of coffee beans.

A coffee machine according to one embodiment of the present invention includes: a water container which contains water; a bean storage unit that stores coffee beans; grinding the blade; a powder storage unit that stores coffee powder; an input section; a detection unit; and a water supply section.

The grinding blade is driven and rotated in the bean storage portion to grind coffee beans and produce coffee powder. The input unit is configured to allow a user to input information related to the amount of coffee extracted by the powder storage unit. The detection unit detects information on at least one of a volume of the coffee beans and a weight of the coffee beans stored in the bean storage unit. The water supply unit supplies water in the water container to the powder storage unit based on information on the amount of coffee input to the input unit and information detected by the detection unit.

According to the present invention, coffee of an appropriate concentration can be extracted according to the type and roasting degree of coffee beans.

Drawings

Fig. 1 is a perspective view of a coffee maker according to embodiment 1 of the present invention.

Fig. 2 is a sectional view of the coffee maker of embodiment 1.

Fig. 3 is a perspective view of the coffee maker of embodiment 1 with the lid body opened.

Fig. 4 is a perspective view of a measuring spoon attached to the coffee maker of embodiment 1.

Fig. 5 is a perspective view of a coffee maker according to embodiment 2 of the present invention.

Fig. 6 is a perspective view of a coffee maker according to embodiment 3 of the present invention.

Fig. 7 is a side view of a modified example of the bean measuring container.

Fig. 8 is a side view of a modified example of the bean measuring container.

Detailed Description

The present inventors have conducted intensive studies to provide a coffee maker capable of extracting coffee of an appropriate concentration depending on the kind and roasting degree of coffee beans, and as a result, have obtained the following findings.

In the conventional coffee machine, the standards of the amount of coffee beans and the amount of water are set in advance according to the amount of coffee extracted and the extraction program. The extraction procedure included dense (Rich), weak (Mild), caffeine-free coffee beans (Decaffeinated beans).

Hereinafter, the coffee cup will be referred to as a cup for convenience. Thus, for example, a quantity of coffee of a coffee cup is represented as a quantity of coffee. How many coffee cups there are is also referred to as the number of cups.

In the conventional coffee maker, a measuring spoon is attached thereto in order to save labor for measuring coffee beans. For example, in the case where the amount of coffee extracted is 3 cups and the hot/rich process is selected as the extraction process, the amount of coffee beans is 3+1/4 spoons in terms of a measuring spoon and the amount of water is 420cc as a standard corresponding to the amount of coffee and the extraction process.

In the conventional coffee maker, since the coffee beans are measured by the measuring spoon, the measurement result is an envelope volume including a space around the coffee beans. However, the size of the coffee beans varies depending on the kind and the roasting degree. For example, coffee beans tend to swell more as the roasting degree is deeper.

Sometimes mixed beans in which a plurality of kinds of coffee beans are mixed are also used to extract coffee. In this case, small coffee beans sometimes enter the gaps of large coffee beans and the envelope volume becomes small. That is, the weight of each 1 spoon of the measuring spoon differs according to the coffee beans used. Therefore, the amount of coffee beans measured by the measuring spoon to extract coffee of a desired concentration may be different from the amount actually required.

For example, sometimes the amount of beans measured by a measuring spoon for extracting a quantity of 5 cups of coffee is actually only the amount of beans suitable for extracting a quantity of 4 cups of coffee. In this case, coffee of a less than desired strength is extracted.

In the case of measuring coffee using the measuring spoon in a state of coffee powder, since there is almost no gap between coffee powders on the measuring spoon, the influence of the kind of coffee beans and the roasting degree is small.

The present inventors have newly found that the problem that the amount of coffee beans measured by a measuring spoon for extracting coffee of a desired concentration is different from the actually required amount is a unique problem for a coffee maker capable of fully automatically extracting coffee from the state of coffee beans. Based on this finding, the present inventors have conducted intensive studies and found the following.

A coffee maker according to a first aspect of the present invention includes: a water container which contains water; a bean storage unit that stores coffee beans; grinding the blade; a powder storage unit that stores coffee powder; an input section; a detection unit; and a water supply section.

A coffee maker according to a second aspect of the present invention is the coffee maker according to the first aspect, further comprising a bean measuring container for measuring coffee beans. The detection portion has a height sensor that detects the height of the coffee beans stored in the bean measuring container. The detection unit detects information related to the volume of the coffee beans stored in the bean storage unit based on the measurement value of the height sensor.

A coffee maker according to a third aspect of the present invention is the coffee maker according to the first or second aspect, further comprising a bean measuring container for measuring coffee beans. The detection unit has a weight sensor for measuring the weight of the bean measuring container. The detection unit detects information related to the weight of the coffee beans stored in the bean storage unit based on a measurement value of the weight sensor.

A coffee maker according to a fourth aspect of the present invention is the coffee maker according to any one of the first to third aspects, wherein the detection unit includes a bean information input unit for allowing a user to input information on at least one of a volume of the coffee beans and a weight of the coffee beans stored in the bean storage unit.

A coffee maker according to a fifth aspect of the present invention is the coffee maker according to any one of the first to fourth aspects, wherein the input unit is configured to allow a user to input an extraction program. The water supply unit supplies water in the water container to the powder storage unit based on the information on the amount of coffee inputted through the input unit, the extraction program, and the information detected by the detection unit.

Embodiments of the present invention will be described below with reference to the drawings. The present invention is not limited to the present embodiment. In the drawings, the same or substantially the same components are denoted by the same reference numerals, and redundant description is omitted.

Hereinafter, for convenience of explanation, terms indicating directions such as "up", "down", "front", "rear", and the like are used assuming a state in normal use, but are not intended to limit a state of use of the coffee maker of the present invention.

(embodiment 1)

A coffee maker according to embodiment 1 of the present invention will be described. Fig. 1 and 2 are a perspective view and a sectional view of a coffee maker according to the present embodiment, respectively. Fig. 3 is a perspective view of the coffee maker of the present embodiment in a state where the lid 21 is opened. Fig. 4 is a perspective view of the measuring spoon 6 attached to the coffee maker according to the present embodiment.

The coffee machine of the present embodiment is a coffee machine having a grinding function capable of fully automatically extracting coffee from a state of coffee beans.

As shown in fig. 1 and 2, the coffee maker of the present embodiment includes a main body 1, a water container 2, and a coffee container 3.

The water container 2 is a container for containing water for coffee extraction. The water container 2 is detachably mounted to the rear portion of the main body 1. A lid 21 is openably and closably attached to an upper portion of the water container 2. A filter unit 22 for filtering water is provided below the lid body 21. The water container 2 contains water filtered by the filter unit 22.

The coffee container 3 is a container for storing extracted coffee. The coffee container 3 can accommodate, for example, more than 5 cups of coffee. The coffee container 3 is placed on an insulation board 4 provided below the main body 1. The coffee in the coffee container 3 can be kept warm by the heat from the warming plate 4.

The coffee container 3 has a detachable lid 31. The lid 31 is provided with an inlet hole 31a for introducing coffee poured from above into the coffee container 3. In order to facilitate the handling of the coffee container 3, a handle 32 is provided at the side wall of the coffee container 3.

The main body 1 has a bean housing portion 11, a grinding blade 12, and a powder housing portion 13.

The bean storage 11 stores coffee beans. The bean storage 11 is provided at an upper portion of the main body 1. A lid 111 is openably and closably attached to an upper portion of the bean container 11. When the lid 111 is opened, coffee beans can be put into the bean storing portion 11. A grinding blade 12 is provided in the bean storage portion 11.

The grinding blade 12 is driven and rotated in the bean container 11 to grind coffee beans and produce coffee powder. The grinding blade 12 is connected to an output shaft 121a of the motor 121. When the motor 121 is driven, the grinding blade 12 is driven and rotated in the bean accommodating portion 11 around the output shaft 121 a.

A powder storage section 13 is provided below the bean storage section 11. A mesh filter (not shown) is provided at the lower end of the bean container 11 so that coffee powder having a predetermined size or more does not fall into the powder container 13.

The powder storage portion 13 stores coffee powder produced by the grinding blade 12. The powder containing portion 13 is formed in a tapered shape such that the diameter decreases downward. The powder storage section 13 is configured to be movable to a side away from the lower side of the bean storage section 11. This enables the user to dispose a filter (not shown) along the inner surface of the powder containing unit 13 and to add coffee powder directly.

A valve 131 is provided at the lower end of the powder containing section 13. The valve body 131 is configured to: when the coffee container 3 is placed on the heat-insulating plate 4, the valve body 131 is in contact with the lid body 31 and is opened. When the valve body 131 is opened, the coffee extracted through the powder containing portion 13 is contained in the coffee container 3 through the access hole 31 a. If the coffee container 3 is not placed on the heat insulating plate 4, the valve body 131 is closed and coffee does not flow below the powder storage 13.

The main body 1 includes an input unit 14, a detection unit 15, a water supply unit 16, and a heating unit 17.

The input unit 14 is configured to: as an example of the information on the amount of coffee extracted by the powder containing unit 13, the user can input the number of cups. The user can input a desired number of cups by operating the input unit 14.

As shown in fig. 1, an input portion 14 is provided on a part of the front of the main body 1 which is easily recognized. The input unit 14 is configured to allow a user to input an extraction program (for example, a thick, thin, caffeine-free coffee bean, etc.) of coffee to be extracted.

The detection unit 15 detects information on at least one of the volume and the weight of the coffee beans stored in the bean storage unit 11. In the present embodiment, the detection unit 15 detects information on the volume of coffee beans stored in the bean storage unit 11. Specifically, the coffee maker of the present embodiment further includes a bean measuring container 5 having a bottomed tubular shape for measuring coffee beans.

The bean measuring container 5 is inserted into a recess 1a provided in a part of the front portion of the main body 1 and is detachably held. The detection unit 15 has a height sensor 151 that detects the height of the coffee beans stored in the bean measuring container 5. The detection unit 15 detects information on the volume of coffee beans stored in the bean storage unit 11 based on the measurement value of the height sensor 151.

The water supply unit 16 supplies water to the powder storage unit 13 based on the number of cups inputted by the user through the input unit 14, the extraction program, and the information detected by the detection unit 15. Water supply unit 16 is connected to the lower end of water tank 2, and ejects water in water tank 2 from drain port 161 toward the back surface of lid 111.

The cover 111 has a spray dome 112 protruding upward in a hemispherical shape. The water sprayed from the water supply unit 16 to the back surface of the cover 111 is reflected by the inner surface of the spray dome 112, and falls in a shower-like manner through the bean storage unit 11 to the powder storage unit 13. This makes it possible to supply water more uniformly to the coffee powder in the powder containing unit 13. The water supply unit 16 includes a pump (not shown) for supplying water in the water tank 2 to the bean storage unit 11.

The heating unit 17 heats the water flowing through the water supply unit 16 and also heats the heat-retaining plate 4. The heating unit 17 is, for example, a sheath heater. The heating unit 17 heats the heat-insulating plate 4 to thereby heat coffee in the coffee container 3 placed on the heat-insulating plate 4.

An example of use of the coffee maker of the present embodiment will be described.

First, the user puts coffee beans to be put into the bean storing part 11 into the bean measuring container 5 with a predetermined weight (for example, 10g), and inserts the bean measuring container 5 into the recess 1a of the main body 1. Thus, the height sensor 151 of the detection portion 15 can measure the height of the coffee beans in the bean measuring container 5. The measurement value measured by the height sensor 151 is stored in a storage unit (not shown). The user sets a filter along the inner surface of the powder containing section 13.

Next, as shown in fig. 3, the user opens the lid 111 and puts coffee beans into the bean storage 11 using the measuring spoon 6 shown in fig. 4. The standard for the amount of coffee beans to be put is set in advance according to the number of cups of coffee to be extracted and the extraction program. For example, in the case of hot coffee, the criteria shown in table 1 are set in advance. Table 1 is attached to the side of a coffee machine, for example, and is also described in the instruction manual.

(Table 1)

The user uses the measuring spoon 6 to put coffee beans into the bean storing part 11 according to the predetermined standard shown in table 1. For example, when the desired number of cups is 3 cups and the desired extraction process is hot coffee, dark/light, the user puts coffee beans of 3+1/4 spoons into the bean storing portion 11 with the measuring spoon 6. In the measuring spoon 6, a scale 6a is marked at the height position of 1/2 spoons and a scale 6b is marked at the height position of 1/4 spoons.

From the measurement value of the height sensor 151 and the diameter of the bean measuring container 5, the volume of the coffee beans contained in the bean measuring container 5 (i.e., the envelope volume) can be calculated. The specific gravity of the coffee beans can be calculated from the volume and the preset weight of the coffee beans stored in the bean measuring container 5.

The weight of the coffee beans stored in the bean storage 11 can be calculated from the specific gravity of the coffee beans and the number of the measuring spoon 6 put in the bean storage 11. These calculations are performed by a control unit (not shown) incorporated in the coffee maker.

Next, the user closes the lid 111, operates the input unit 14, inputs a desired number of cups and a desired extraction program, and presses a start button (not shown) to instruct the start of coffee extraction.

Thereby, the motor 121 is driven, and the grinding blade 12 is driven and rotated in the bean storing portion 11. As a result, the coffee beans contained in the bean containing portion 11 are pulverized to produce coffee powder. The produced coffee powder falls down into the powder containing section 13 through the mesh filter by the action of gravity.

The water supply unit 16 supplies water to the powder storage unit 13 based on the number of cups inputted by the user through the input unit 14, the extraction program, and the information detected by the detection unit 15. The amount of water supplied is set in advance to an amount capable of extracting coffee of a desired concentration, depending on the number of cups, the extraction program, and the weight of coffee beans stored in the bean storing portion 11. As described above, the weight of the coffee beans stored in the bean storing portion 11 can be calculated based on the measurement value of the height sensor 151.

The water supply unit 16 supplies water in the water tank 2 to the powder storage unit 13 through the bean storage unit 11 by discharging the water from the water discharge port 161 toward the back surface of the lid 111. The water in the water tank 2 is heated by the heating unit 17 in the middle of flowing from the water tank 2 to the drain port 161.

The water supplied to the powder containing portion 13 passes through the coffee powder and the filter by gravity. Thereby, coffee is extracted and stored in the coffee container 3 through the access hole 31 a. The coffee in the coffee container 3 is heated by the heating portion 17 to be kept warm by the warming plate 4.

Then, when coffee is extracted, if the extracted coffee beans do not change, it is not necessary to put the coffee beans into the bean measuring container 5 to measure the height again. In this case, the water supply unit 16 can extract coffee of a desired concentration by supplying water to the powder storage unit 13 based on the measurement value stored in the storage unit and the number of cups input by the user through the input unit 14.

In the coffee maker of the present embodiment, the height of coffee beans in the bean measuring container 5 in which coffee beans having a predetermined weight are stored is detected by the height sensor 151 of the detection unit 15. This makes it possible to calculate the specific gravity of the coffee beans stored in the bean measuring container 5. The weight of the coffee beans stored in the bean storage 11 can be calculated from the specific gravity and the number of cups inputted by the user using the input unit 14.

Thereby, the water supply portion 16 can supply water suitable for extracting coffee from coffee beans stored in the bean storage portion 11 to the powder storage portion 13. As a result, coffee of an appropriate concentration can be extracted according to the type and roasting degree of coffee beans.

Since the coffee machine of the present embodiment temporarily stores the measurement value of the height sensor 151 in the storage unit, it can be used in the same manner as a general coffee machine as long as the coffee beans are not changed. That is, by directly placing coffee beans of the number of spoons corresponding to the number of cups and the extraction program into the bean storing portion 11 using the measuring spoon 6, coffee of an appropriate concentration can be extracted according to the kind and the roast degree of the coffee beans.

(embodiment 2)

A coffee maker according to embodiment 2 of the present invention will be described. Fig. 5 is a perspective view of the coffee maker of the present embodiment.

The coffee maker of the present embodiment differs from embodiment 1 in that the detection unit 15 includes a weight sensor 152 instead of the height sensor 151.

The weight sensor 152 detects the weight of the bean measuring container 5 inserted into the recess 1a of the main body 1. The user stores a predetermined volume of coffee beans in the bean measuring container 5. The detection unit 15 detects information on the weight of the coffee beans stored in the bean storage unit 11 based on the measurement value of the weight sensor 152.

In the coffee maker of the present embodiment, the weight of coffee beans in the bean measuring container 5 in which a predetermined volume of coffee beans is stored is detected by the weight sensor 152 of the detection portion 15. This makes it possible to determine the specific gravity of the coffee beans stored in the bean measuring container 5.

The weight of the coffee beans stored in the bean storage 11 can be calculated from the specific gravity and the number of cups inputted by the user using the input unit 14. Thereby, the water supply portion 16 can supply water suitable for extracting coffee from coffee beans stored in the bean storage portion 11 to the powder storage portion 13. As a result, coffee of an appropriate concentration can be extracted according to the type and roasting degree of coffee beans.

Since the coffee machine of the present embodiment temporarily stores the measurement value of the weight sensor 152 in the storage unit, it can be used in the same manner as a normal coffee machine as long as the coffee beans are not changed. That is, by directly placing coffee beans of the number of spoons corresponding to the number of cups and the extraction program into the bean storing portion 11 using the measuring spoon 6, coffee of an appropriate concentration can be extracted according to the kind and the roast degree of the coffee beans.

(embodiment 3)

A coffee maker according to embodiment 3 of the present invention will be described. Fig. 6 is a perspective view of the coffee maker of the present embodiment.

The coffee maker of the present embodiment differs from embodiment 1 in that the detection unit 15 has a bean information input unit 153 instead of the height sensor 151.

The user inputs information on at least one of the volume and the weight of the coffee beans stored in the bean storage 11 using the bean information input 153. In the present embodiment, the bean information input unit 153 is provided in the input unit 14.

In the present embodiment, instead of providing the height sensor 151, the user measures the height of coffee beans in the bean measuring container 5 in which coffee beans of a preset weight are stored, and inputs the measurement result through the bean information input unit 153. This makes it possible to determine the specific gravity of the coffee beans stored in the bean measuring container 5.

The weight of the coffee beans stored in the bean storage 11 can be calculated from the specific gravity and the number of cups inputted by the user using the input unit 14. Thus, the water supply unit 16 can supply water suitable for extracting coffee from the coffee beans in the storage bean storage unit 11 to the powder storage unit 13. As a result, coffee of an appropriate concentration can be extracted according to the type and roasting degree of coffee beans.

In the coffee machine of the present embodiment, since a sensor such as the height sensor 151 is not used, the manufacturing cost can be reduced.

The present invention is not limited to the above three embodiments. For example, in embodiment 1, the detection unit 15 includes only the height sensor 151. However, the present invention is not limited thereto. For example, the detection section 15 may include both the height sensor 151 and the weight sensor 152.

In this case, the user measures only the preset weight (or preset volume) of the coffee beans put in the bean storing part 11. This can eliminate the time and effort required for putting the beans into the bean weighing container 5.

In embodiment 3, the user measures the height of coffee beans in the bean measuring container 5 containing coffee beans of a preset weight, and inputs the measurement result through the bean information input unit 153. However, the present invention is not limited thereto.

For example, instead of providing the weight sensor 152, the user may measure the weight of coffee beans in the bean measuring container 5 in which a predetermined volume of coffee beans is stored, and input the measurement result through the bean information input unit 153. In this case, coffee of an appropriate concentration can be extracted according to the type and roasting degree of coffee beans.

The bean information input unit 153 may include a code reader capable of reading a barcode and a QR code (registered trademark) in which information on the specific gravity of the coffee beans is stored. With this configuration, it is possible to extract coffee of an appropriate concentration according to the type and roasting degree of coffee beans.

The information on the volume and weight of the coffee beans stored in the bean storage 11 is input through the bean information input unit 153. However, the present invention is not limited thereto.

Fig. 7 and 8 are side views of a bean measuring container 5A as a modified example of the bean measuring container 5. For example, as shown in fig. 7 and 8, the bean measuring container 5A may be provided with a plurality of scales arranged at a plurality of heights on the side surface thereof. The plurality of scales respectively indicate the roasting degree of the coffee beans.

The deeper the roast, the more the coffee beans swell and the more the volume of the whole coffee beans increases. Therefore, on the bean measuring container 5, a scale indicating a deeper roast degree is marked at a higher position. Specifically, scales such as "deep baking", "medium baking", and "light baking" are attached to the bean measuring container 5 in this order from the top.

When coffee beans having a predetermined weight (for example, 10g) are stored in the bean measuring container 5A, the user can know the roasting degree of the coffee beans by the scale corresponding to the volume of the coffee beans. The user can extract coffee of an appropriate concentration according to the roasting degree of the coffee beans by inputting the roasting degree using the bean information input unit 153.

In the modification shown in fig. 7 and 8, information indicating the roasting degree of coffee beans is added to the side surface of the bean measuring container 5A. However, instead of the roasting degree, other information that can be read by the coffee maker, such as a graded symbol, may be used.

In the above description, the water supply unit 16 supplies water to the powder storage unit 13 based on the number of cups inputted by the user using the input unit 14, the extraction program, and the information detected by the detection unit 15. However, the present invention is not limited thereto.

For example, the water supply unit 16 may supply water to the powder storage unit 13 based on the number of cups input by the user using the input unit 14 and information detected by the detection unit 15. With this configuration, it is possible to extract coffee of an appropriate concentration according to the type and roasting degree of coffee beans.

In the above description, the input unit 14 is configured to: as an example of the information on the amount of coffee extracted by the powder containing unit 13, the user can input the number of cups. However, the present invention is not limited thereto. For example, the input unit 14 may be configured to: as information on the amount of coffee extracted by the powder containing unit 13, the user can directly input the amount of coffee (for example, 170cc, 295cc, 420cc, etc.).

Claims

1. A coffee maker, having:

a water container configured to receive water;

a bean storage section configured to store coffee beans;

a grinding blade configured to be driven and rotated in the bean housing section and to grind the coffee beans to produce coffee powder;

a powder storage unit configured to store the coffee powder;

an input unit configured to allow a user to input information related to the amount of coffee extracted by the powder storage unit;

a detection unit configured to detect information relating to at least one of a volume of the coffee beans and a weight of the coffee beans stored in the bean storage unit; and

and a water supply unit configured to supply water in the water container to the powder storage unit based on the information on the amount of coffee input by the input unit and the information detected by the detection unit.

2. The coffee maker of claim 1,

the coffee maker further having a bean metering container configured to meter the coffee beans,

the detection unit includes a height sensor configured to detect a height of the coffee beans stored in the bean measuring container, and to detect information related to a volume of the coffee beans stored in the bean storage unit based on a measurement value of the height sensor.

3. The coffee maker of claim 1,

the detection unit includes a weight sensor configured to measure a weight of the bean measuring container and detect information related to a weight of the coffee beans stored in the bean storage unit based on a measurement value of the weight sensor.

4. The coffee maker of claim 1,

the detection unit includes a bean information input unit configured to allow a user to input information on at least one of a volume of the coffee beans stored in the bean storage unit and a weight of the coffee beans.

5. The coffee maker of claim 1,

the input part is also configured to allow the user to input the extraction program,

the water supply unit is configured to supply the water in the water container to the powder storage unit based on the information on the amount of coffee input by the input unit, the extraction program, and the information detected by the detection unit.