JP2970378B2 - Coffee maker - Google Patents

Coffee maker

Info

Publication number
JP2970378B2
JP2970378B2 JP6002411A JP241194A JP2970378B2 JP 2970378 B2 JP2970378 B2 JP 2970378B2 JP 6002411 A JP6002411 A JP 6002411A JP 241194 A JP241194 A JP 241194A JP 2970378 B2 JP2970378 B2 JP 2970378B2
Authority
JP
Japan
Prior art keywords
detecting
crushing
time
motor
coffee
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
JP6002411A
Other languages
Japanese (ja)
Other versions
JPH07204096A (en
Inventor
英夫 小幡
政昭 白川
政司 神原
効司 野田
Original Assignee
松下電器産業株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 松下電器産業株式会社 filed Critical 松下電器産業株式会社
Priority to JP6002411A priority Critical patent/JP2970378B2/en
Publication of JPH07204096A publication Critical patent/JPH07204096A/en
Application granted granted Critical
Publication of JP2970378B2 publication Critical patent/JP2970378B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drip type coffee machine having a mill for grinding coffee beans or a mill for grinding coffee beans.

[0002]

2. Description of the Related Art Conventionally, grinding coffee beans in an electric mill for grinding coffee beans or in a coffee maker having a mill function involves grinding coffee beans housed in a mill chamber with a high-speed rotating cutter. In some cases, the ground coffee powder is discharged to the outside of the mill chamber through a filter provided adjacent to the mill chamber.At this time, the driving time of the motor for grinding the coffee beans is controlled by a manual timer or the like. In most cases, the motor was driven for an initially set time.

A conventional coffee maker, particularly a coffee maker having a mill function, will be described below.

FIG. 5 shows a conventional coffee maker having a mill function, in which coffee beans are stored in a hopper 50, and a switch (not shown) is set by setting a timer (not shown) to an arbitrary time. Then, the cutter 52 mounted on the motor 51 rotates at a high speed, and the coffee beans in the hopper 50 are sequentially fed into the mill chamber 53 and are sequentially ground by the cutter 52 to be coffee powder. The coffee grounds are sequentially discharged from a filter 54 provided in a lower portion of the mill 53 chamber, and are deposited in a filtration chamber 55.

When the timer period set at the beginning elapses, the power supply to the motor 51 is stopped, and at the same time, the power supply to the heater 56 is started, and the water in the water container 57 is disposed adjacent to the heater 56. It is heated by the heating pipe 58 to become hot water, is pumped by the steam pressure generated at that time, and is dropped from the discharge pipe 59 to the hopper 50.

The hot water dropped on the hopper 50 passes through a mill chamber 53 and a filter 54, is poured into coffee powder deposited in a filtration chamber 55, and becomes coffee liquid to form a glass container 60.
To be dropped.

[0007]

However, in the configuration of the conventional coffee maker described above, since the grinding time of the coffee beans is manually set arbitrarily, if the setting of the time is erroneously shortened, the coffee beans are completely removed. If the motor is stopped in a state where it is not pulverized, and the heating and extraction process is continued in this state, a delicious coffee liquid cannot be naturally obtained.

[0008] On the other hand, if the time is set too long, the motor continues to rotate even if the coffee beans are completely ground, which shortens the life of the motor and has a problem from the viewpoint of energy saving.

The present invention solves the above-mentioned conventional problems, detects a state in which coffee beans have been completely ground, turns off the motor automatically, and improves the reliability of the detection of the completion of grinding. It is intended to improve.

[0010]

Means for Solving the Problems To achieve the above object, a first invention of the present invention is to provide a mill chamber for grinding coffee beans, a rotatable cutter contained in the mill chamber, It is composed of a motor for driving the cutter, a detecting element for detecting the crushing vibration or crushing noise generated at the time of crushing the coffee beans, and an exterior body having an opening at a portion facing the detecting surface of the detecting element. Detection means,
Control means for controlling the operation of the motor in accordance with the output level obtained from the detection means.

According to a second aspect of the present invention, a detecting means for detecting a pulverizing vibration or a pulverizing noise generated at the time of pulverizing coffee beans is provided on an outer wall of a mill room.

According to a third aspect of the present invention, a detecting means for detecting a pulverizing vibration or a pulverizing noise generated at the time of pulverizing coffee beans is provided in a housing and on a bottom portion supporting a mill chamber. .

According to a fourth aspect of the present invention, an opening provided in an exterior body of a detecting means for detecting a crushing vibration or a crushing noise generated at the time of crushing coffee beans is arranged in a direction excluding the upper part. is there.

According to a fifth aspect of the present invention, the control means for controlling the operation of the motor includes an output level from a detection means for detecting a grinding vibration or a grinding noise generated at the time of grinding the coffee beans. The motor is stopped when the amount of change in the average level reaches a predetermined value.

According to a sixth aspect of the present invention, the control means for controlling the operation of the motor includes an output level from a detection means for detecting the crushing vibration or crushing noise generated at the time of crushing the coffee beans. The operation of the motor is stopped after an appropriate time has elapsed from the time when the amount of change in the average level reaches a predetermined value.

According to a seventh aspect of the present invention, the control means for controlling the operation of the motor is characterized in that a change amount of an output level from a detecting means for detecting grinding vibration or grinding noise generated at the time of grinding coffee beans is a predetermined amount. When the value is less than a set value within a time, the operation of the motor is stopped.

[0017]

According to the first means of the present invention, since the operation of the motor is controlled by detecting the vibration and noise generated during the grinding of the coffee beans, the coffee beans are reliably ground and the energy saving effect is obtained. As a result, the life of the motor can be extended.

Further, in the second means of the present invention, since the detecting means is provided on the outer wall of the mill chamber, it is possible to detect the end of grinding of coffee beans with high reliability.

Further, in the third means of the present invention, since the detecting means is provided in the main body and on the bottom portion supporting the mill chamber, the detecting means is hardly affected by noise outside the housing and the reliability is improved. This makes it possible to detect a high coffee bean crushing end.

Further, in the fourth means of the present invention, since the opening provided on the exterior of the detecting means is provided in a direction excluding the upward direction, the reliability of the detecting means can be improved. .

In the fifth means of the present invention, the output level from the detecting means is converted into an average level for an appropriate time, and when the amount of change in the average level reaches a predetermined value, the operation of the motor is started. Since it is configured to stop, detection accuracy can be improved.

In the sixth means of the present invention, the operation of the motor is stopped after an appropriate time has elapsed from the time when the amount of change in the output level from the detecting means has reached a predetermined value. Therefore, the coffee beans can be reliably ground.

Further, in the seventh means of the present invention, when the amount of change in the output level from the detecting means is smaller than a set value within a predetermined time, the operation of the motor is stopped. Therefore, it is possible to prevent problems such as the motor continuing to run idle or to keep energizing while the motor is locked.

[0024]

BRIEF DESCRIPTION OF THE DRAWINGS FIG.
It will be described based on. Note that the present invention is not limited to the present embodiment.

In FIG. 1, reference numeral 1 denotes an arrangement provided in a housing 2.
A hopper for accommodating coffee beans. A mill chamber 5 containing a cutter 4 mounted on a motor 3 is provided in connection with the hopper 1. A filter 6 is mounted on the lower surface of the mill chamber 5, and the coffee powder pulverized in the mill chamber 5 passes through the filter 6 and accumulates in a filtration chamber 7 provided below.

A grinding vibration 8 is fixed to the outer wall of the mill chamber 5 by an appropriate method or provided on the bottom surface 9 of the housing 2 supporting the mill chamber. Or a detecting means for detecting crushing noise. The detecting means 8 includes a detecting element 10 composed of a piezo element or the like and an exterior having an opening 11 at a portion facing the detecting surface of the detecting element 10. And the body 12.

Reference numeral 13 denotes a water container mounted on the housing 2, and water in the water container 13 is guided to a heating pipe 16 provided near the heater 15 via a tube A14. At this time, if the heater 15 is energized, the water in the heating pipe 16 is heated to become hot water, and at the same time, rises in the water rising pipe 17 due to the steam pressure generated at that time, and drops from the discharge pipe 18. 19 is a glass container for receiving the coffee liquid extracted in the filtration chamber.

In the above configuration, if the coffee beans are put into the hopper 1 and the power is turned on, the cutter 4 mounted on the motor 3 rotates at a high speed, and the coffee beans in the hopper 1 are sequentially sent into the mill chamber 5. The coffee beans sent into the mill chamber 5 are pulverized by the cutter 4.

When grinding coffee beans with the cutter 4,
Crushing vibration and crushing noise are generated by collision energy between the cutter 4 and the coffee beans, and are transmitted to the outer wall of the mill chamber 5 and the inside of the housing 2. The crushing vibration and the crushing noise are detected by the detecting means 8, and when the crushing of the coffee beans is completed and the level of the crushing vibration and the crushing noise becomes smaller than the set value, that is, the output level from the detecting means 8 becomes the set value. An output level discrimination circuit 20 discriminates a point of time when the value becomes smaller than this, and this discrimination signal is sent to a control means 21 for controlling the operation of the motor 3 to stop the energization of the motor 3.

On the other hand, when the coffee beans are ground by the cutter 4, the collision between the coffee beans and the cutter is discontinuous.
This is because the cutter 4 has a plurality of crushing blades and the flow of coffee beans from the hopper 1 to the mill chamber 5 is not constant. Therefore, in the present invention, the detecting means 8
When determining the output level from the device, the output level from the detecting means 8 is converted into an average level for an appropriate period of time instead of determining in real time, and the amount of change in the average level is determined by the output level determination circuit 20. It is configured.
Reference numeral 22 denotes an output level operation circuit provided for that purpose.

Further, in the present invention, an appropriate time delay is provided between the time when the output level from the detecting means 8 becomes smaller than the set value by the output level determining circuit 20 and the time when the energization of the motor 3 is stopped. Have. This is because the flow of the coffee beans from the hopper 1 to the mill chamber 5 is not constant, so that the coffee beans may not be sent to the mill chamber 5 for a certain period of time and no crushing vibration or crushing noise may occur. This is to prevent the power supply to the motor 3 from being stopped.

Further, as described above, the detecting means 8 is constituted by the detecting element 10 such as a piezo element, and the exterior body 12 having the opening 11 at a portion facing the detecting surface of the detecting element 10. . As is generally known, a detecting element 10 such as a piezo element directly detects the crushing vibration generated at the time of crushing the coffee beans, and enters from an opening 11 provided in the exterior body 12. Noise generated at the time of grinding coffee beans can also be detected. That is, the detection element 10 is covered with the exterior body 12 having the opening portion 11 at a portion facing the detection surface, so that the detection noise has directivity, and the sound other than the pulverization noise (for example, the case This is to cut off noise outside the body 2).

In the embodiment shown in FIG. 1, the detection means 8 is fixed to the outer wall constituting the mill chamber 5, but this is directly installed at the source of vibration and noise to improve reliability. It is to make it.

On the other hand, in the embodiment shown in FIG. 2, the detecting means 8 is provided in the housing 2 and on the bottom surface 9 supporting the mill chamber. This is because the vibration of the mill chamber 5 is propagated to the detection means 8 via the bottom 9 supporting the mill chamber 5, so that the detection of the vibration is highly reliable, and the bottom 9 supporting the mill chamber 5 is This is because the housing 2 is not directed to the outside world and thus is not easily affected by external noise.

As shown in the embodiment of FIGS. 1 and 2, the opening 11 provided on the exterior body 12 of the detecting means 8 is directed in a direction except for the upper part. This is the opening 11
This is to prevent the output characteristics of the detection element 10 from deteriorating due to foreign matter such as garbage.

Further, in the present invention, when the variation of the output level from the detecting means 8 is smaller than a set value within a predetermined time, the operation of the motor 3 is stopped. . This is because, for example, when the motor 3 is operated without putting coffee beans into the hopper 1 or when the motor 3 is locked for some reason, there is no change in the output level from the detection means 8, so the output level is not changed. This is to prevent the motor 3 from being energized forever because the determination circuit 20 cannot make a determination.

As described above, when all the coffee beans put in the hopper 1 are ground in the mill chamber 5 and turned into coffee powder and stored in the filtration chamber 7, the detecting means 8 is activated and the motor 3 is stopped. I do.

Thereafter, the heater 15 is manually or automatically operated.
The water in the water container 13
6 and becomes hot water, and at the same time, rises in the water rising pipe 17 due to the steam pressure generated at that time, and the discharge pipe 18
Further, the mixture is poured from the mill chamber 5 through the filter 6 into the coffee powder in the filtration chamber 7, and is dropped into the glass container 19 as a coffee liquid.

[0039]

As is apparent from the above embodiment, the coffee maker according to the first aspect of the present invention detects the vibration and noise generated when the coffee beans are crushed and controls the operation of the motor. The beans can be reliably ground, and the energy saving effect and the life of the motor can be extended.

Further, in the second aspect of the present invention, since the detecting means is provided on the outer wall of the mill room, it is possible to detect the end of the grinding of the coffee beans with high reliability.

In the third aspect of the present invention, since the detection means is provided in the main body and on the bottom portion supporting the mill chamber, the detection means is hardly affected by noise outside the housing, and the reliability is improved. This makes it possible to detect a high coffee bean crushing end.

Further, in the fourth aspect of the present invention, since the opening provided on the exterior of the detecting means is provided in a direction excluding the upper part, the reliability of the detecting means can be improved. .

According to the fifth aspect of the present invention, the output level from the detecting means is converted into an average level for an appropriate time, and when the amount of change in the average level reaches a predetermined value, the operation of the motor is started. Since it is configured to stop, detection accuracy can be improved.

In the sixth aspect of the present invention, the operation of the motor is stopped after an appropriate time has elapsed from the time when the amount of change in the output level from the detecting means has reached a predetermined value. Therefore, the coffee beans can be reliably ground.

In a seventh aspect of the present invention, when the amount of change in the output level from the detection means is smaller than a set value within a predetermined time, the operation of the motor is stopped. Therefore, it is possible to prevent problems such as the motor continuing to run idle or to keep energizing while the motor is locked.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a coffee maker according to an embodiment of the present invention.

FIG. 2 is a longitudinal sectional view of a coffee maker according to another embodiment of the present invention.

FIG. 3 is a longitudinal sectional view of a detecting means of the coffee maker.

FIG. 4 is a circuit block diagram of the coffee maker.

FIG. 5 is a longitudinal sectional view of a conventional coffee maker.

[Explanation of symbols]

 Reference Signs List 3 Motor 4 Cutter 5 Mill chamber 8 Detecting means 9 Bottom part 10 Detecting element 11 Opening part 12 Exterior body 21 Control means

──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Masaji Kamihara 1006 Kadoma, Kadoma, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (56) References JP-A-63-111824 (JP, A) JP-A-62- 246333 (JP, A) (58) Field surveyed (Int. Cl. 6 , DB name) A47J 31/42 A47J 31/52 A47J 42/44

Claims (7)

(57) [Claims]
1. A mill chamber for grinding coffee beans,
A rotatable cutter contained in the mill chamber, a motor for driving the cutter, a detection element for detecting the crushing vibration or crushing noise generated at the time of coffee bean crushing, and a detection surface of the detection element. A coffee maker comprising: a detection unit configured by an exterior body having an opening in a part; and a control unit that controls operation of the motor in accordance with an output level obtained from the detection unit.
2. The coffee maker according to claim 1, wherein the detecting means for detecting the crushing vibration or the crushing noise generated at the time of crushing the coffee beans is provided on an outer wall of the mill room.
3. The coffee maker according to claim 1, wherein the detecting means for detecting the crushing vibration or the crushing noise generated at the time of crushing the coffee beans is provided in the housing and on a bottom portion supporting the mill chamber.
4. A detecting means for detecting a crushing vibration or a crushing noise generated at the time of crushing coffee beans, wherein an opening provided in an exterior body of the detecting means is arranged in a direction excluding an upper part. Coffee maker.
5. A control means for controlling the operation of the motor converts an output level from a detection means for detecting a grinding vibration or a grinding noise generated at the time of grinding the coffee beans into an average level for an appropriate period of time. The coffee maker according to claim 1, wherein the operation of the motor is stopped when the amount of change in the predetermined value becomes a predetermined value.
6. A control means for controlling the operation of the motor converts an output level from a detection means for detecting a grinding vibration or a grinding noise generated at the time of grinding the coffee beans into an average level for an appropriate period of time. 2. The coffee maker according to claim 1, wherein the operation of the motor is stopped after an appropriate time has elapsed from the time when the amount of change in the predetermined value has reached a predetermined value.
7. A control means for controlling the operation of the motor, wherein the change amount of the output level from the detection means for detecting the crushing vibration or crushing noise generated at the time of crushing the coffee beans is set to a predetermined value within a predetermined time. The coffee maker of claim 1, wherein the machine is configured to stop operating the motor when less.
JP6002411A 1994-01-14 1994-01-14 Coffee maker Expired - Fee Related JP2970378B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6002411A JP2970378B2 (en) 1994-01-14 1994-01-14 Coffee maker

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6002411A JP2970378B2 (en) 1994-01-14 1994-01-14 Coffee maker

Publications (2)

Publication Number Publication Date
JPH07204096A JPH07204096A (en) 1995-08-08
JP2970378B2 true JP2970378B2 (en) 1999-11-02

Family

ID=11528513

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6002411A Expired - Fee Related JP2970378B2 (en) 1994-01-14 1994-01-14 Coffee maker

Country Status (1)

Country Link
JP (1) JP2970378B2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1707089B1 (en) 2005-03-29 2007-05-02 Saeco IPR Limited Process to detect the lack of coffee beans in a grinder of a coffee machine and coffee machine carrying out the process
FR2920288B1 (en) * 2007-08-29 2009-10-23 Seb Sa Method for counting the number of turns of a wheel of a coffee mill and apparatus comprising such a mill
KR101791534B1 (en) * 2017-05-30 2017-10-30 주식회사 달콤 Apparatus for notifying administrator terminal of event occurred in beverage manufacturer machine and operating method thereof

Also Published As

Publication number Publication date
JPH07204096A (en) 1995-08-08

Similar Documents

Publication Publication Date Title
RU2680420C2 (en) Espresso machine with grinder dosing control
KR101479082B1 (en) Brewed beverage appliance and method
US5669287A (en) Coffee and tea brewing apparatus and system
JP5944946B2 (en) System for preparing coffee drinks
AU2003204812B2 (en) Apparatus for grinding coffee bean
US6082245A (en) Apparatus for preparing beverages with end of brew phase detection
US8028617B2 (en) Easily-cleaning multifunctional soybean milk maker
US7469627B2 (en) Coffee maker
KR20140084342A (en) Brewed beverage appliance and method
US5052288A (en) Apparatus for dispensing snack foods
US4325191A (en) Coffee roaster
JP2976464B2 (en) Coffee equipment
JP4326564B2 (en) Crushing and polishing unit, pulverizing and polishing apparatus including the unit, and soy milk machine including the apparatus
EP0055610B1 (en) Coffee maker
DE602004002149T2 (en) Method of operating a spiral ice-making machine
TW548139B (en) Food ingredient grinder assembly and method
US20040025703A1 (en) Coffee apparatus with vacuum-fresh coffee beans
EP2931088B1 (en) Parametric recipes for preparing beverage with capsules in a centrifugal brewing system
CN101326980B (en) Pulping method of pulping machine
US5498757A (en) Milk frothing and heating system
CA2691553C (en) Reservoir level sensing
US4838152A (en) Auto-off coffee brewing system
US8490902B2 (en) Method of detecting the absence of coffee beans in a coffee grinder of a coffee machine and coffee maker for performing the method
WO1990008494A1 (en) Coffee-making machine
KR101612040B1 (en) Automatic coffee brewing apparatus

Legal Events

Date Code Title Description
FPAY Renewal fee payment (prs date is renewal date of database)

Free format text: PAYMENT UNTIL: 20070827

Year of fee payment: 8

FPAY Renewal fee payment (prs date is renewal date of database)

Free format text: PAYMENT UNTIL: 20080827

Year of fee payment: 9

FPAY Renewal fee payment (prs date is renewal date of database)

Free format text: PAYMENT UNTIL: 20080827

Year of fee payment: 9

FPAY Renewal fee payment (prs date is renewal date of database)

Free format text: PAYMENT UNTIL: 20090827

Year of fee payment: 10

FPAY Renewal fee payment (prs date is renewal date of database)

Free format text: PAYMENT UNTIL: 20090827

Year of fee payment: 10

FPAY Renewal fee payment (prs date is renewal date of database)

Free format text: PAYMENT UNTIL: 20100827

Year of fee payment: 11

FPAY Renewal fee payment (prs date is renewal date of database)

Free format text: PAYMENT UNTIL: 20110827

Year of fee payment: 12

FPAY Renewal fee payment (prs date is renewal date of database)

Free format text: PAYMENT UNTIL: 20110827

Year of fee payment: 12

FPAY Renewal fee payment (prs date is renewal date of database)

Free format text: PAYMENT UNTIL: 20120827

Year of fee payment: 13

FPAY Renewal fee payment (prs date is renewal date of database)

Free format text: PAYMENT UNTIL: 20120827

Year of fee payment: 13

FPAY Renewal fee payment (prs date is renewal date of database)

Free format text: PAYMENT UNTIL: 20130827

Year of fee payment: 14

LAPS Cancellation because of no payment of annual fees