JP3831124B2 - Coffee maker - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to an improvement of a coffee maker that can perform from roasting of coffee beans to coffee extraction.
[0002]
[Prior art]
Conventionally, various types of coffee makers are known. For example, in JP-A-4-224719, a temporary storage tank for cooling roasted coffee beans is provided, and further, a series of operations from roasting to cooling of green coffee beans, and from crushing to extraction filtration A coffee maker configured to be able to operate each of the above operations in a separate manner is disclosed, and roasting of coffee beans, pulverization of roasted coffee beans, coffee at a predetermined timing by such configuration Extraction is to be performed.
[0003]
[Problems to be solved by the invention]
However, in the coffee maker as described above, from roasting to coffee extraction at a predetermined timing, or by storing the roasted coffee beans in a temporary storage tank, at the same time during roasting It is also possible to extract. However, since all the coffee beans stored in one roasting are crushed and extracted, even if you can select the approximate number of cups of coffee, you cannot select the amount of coffee powder according to the user's preference, making it easy to use It was bad.
[0004]
Therefore, in view of the present situation, an object of the present invention is to provide an easy-to-use coffee maker that can efficiently make as many cups of coffee as a user requires from green beans.
[0005]
[Means for Solving the Problems]
In order to achieve such an object, the present invention provides a roaster for roasting green coffee beans, a storage unit for temporarily storing roasted coffee beans, a cooling unit for cooling coffee beans, and coffee beans. A crushing unit for crushing, a hot water supply unit for heating and supplying water from a water tank, and an extraction unit for extracting coffee from hot water supplied from the hot water supply unit and crushed coffee powder. In a coffee maker that supplies coffee beans temporarily stored in the storage unit to the pulverizing unit every time there is a coffee extraction request, and determines the amount of coffee powder pulverized in the pulverizing unit based on the operation time of the pulverizing unit And a switching switch for switching a plurality of operation times corresponding to a predetermined amount of coffee powder, and a dedicated switch for operating the pulverizing unit only while the switch is pressed. It is those related to Meka.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
With this configuration, coffee beans roasted by the roasting unit are temporarily stored in the storage unit, and coffee beans are supplied from the storage unit to the pulverization unit each time a user requests to extract coffee. Since it is extracted after being pulverized, it can supply the required number of cups of coffee in a short time, and a switch that switches between multiple operation times corresponding to the amount of coffee powder pulverized in the pulverizer Since a dedicated switch that activates the crushing unit only during pressing is provided, the user can freely select the number of cups of coffee by operating one of the switches, and the user can also select the amount of coffee powder It can be adjusted according to your preference.
[0007]
【Example】
Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings. FIG. 1 is an external view of a coffee maker according to the present embodiment. A lid 2 for charging coffee beans is provided at the top of an outer case 1 and is composed of an operation panel 3, a water tank 4, an extraction unit 5, and a detachable decanter 6. Has been.
[0008]
Next, FIG. 2 is a block diagram of the coffee maker of the present embodiment, and FIG. 3 is a block diagram showing details of the roaster 7. FIG. 4 is a configuration diagram of the inside of the roaster 7 viewed in the direction of arrow V in FIG. A roaster 7 having a kettle shape for roasting green coffee beans is provided at the upper part of the outer case 1, and a stirring body 10 in which a plurality of ridges 9 extend around a rotating shaft 8, and a ring shape. A second electric heater 11 is provided. Further, the bottom wall of the roaster 7 is composed of a plate 13 with a first electric heater 12 caulked, and a first temperature sensor 14 is embedded at an appropriate position of the plate 13.
[0009]
In addition, the emitted-heat amount of the 1st electric heater 12 and the 2nd electric heater 11 can each be set arbitrarily, and is 430W and 160W here, respectively. In this way, if the amount of heat generated by the second electric heater 11 is suppressed, this is advantageous because it can effectively prevent the beans from being burnt.
[0010]
Reference numeral 15 denotes a second temperature sensor protruding from the inner wall of the roaster 7, and the lid 2 is provided with a deodorizing catalyst 17 provided adjacent to the upper side of the exhaust port 16. Reference numeral 20 denotes a drop opening that opens when the solenoid 18 sucks the opening / closing member 19. Reference numeral 21 denotes a motor that rotationally drives the agitator 10, and here is engaged with the rotary shaft 8 via a spring 22 to reduce heat conduction from the agitator 10 to the motor 21.
[0011]
Reference numeral 23 denotes a storage unit arranged immediately below the dropping port 20 and includes a cooling unit 24 having a fan at the bottom. A mortar-type pulverizing unit 25 communicates with the lower part of the storage unit 23, and the extraction unit 5 below the pulverizing unit 25 includes a dripper 26 and a filter 27.
[0012]
The decanter 6 is detachably mounted on a heat retaining base 29 provided with a heat retaining heater 28. Reference numeral 30 denotes a hot water supply unit, which includes a hot water supply pipe 31, a water tank 4 and the like in addition to the above-described heat retaining heater 28. The hot water supply pipe 31 is routed so that a part of the hot water supply pipe 31 is adjacent to the heat retaining heater 28, and the hot water outlet 32 at the tip is opened toward the extraction unit 5. Reference numeral 34 denotes a chaff receiver for collecting chaff falling from the slit 33 formed in the opening / closing member 19.
[0013]
As shown in FIG. 5, the operation panel 3 disposed on the side surface of the outer case 1 includes a power switch 35, a roasting switch 36 for starting roasting of coffee beans, and a roasting adjustment switch for selecting the degree of roasting of coffee beans. 37. Further, a drip switch 38 for starting crushing / extraction of coffee beans, a switch number 39 for switching the operation time of the crushing unit 25 corresponding to the amount of coffee powder, and the crushing unit 25 are operated only while pressed. A powder addition switch, which is a dedicated switch 40, is provided, and an indicator lamp is individually provided above these switches. In this embodiment, the selector switch 39 can be switched between 4, 6, 8, and 10 cups.
[0014]
Next, the operation in the above configuration will be described. First, the lid 2 is lifted and a predetermined amount (for example, 60 g) of green coffee beans is put into the roaster 7. Then, the power switch 35 of the operation panel 3 is turned on. By turning on the power switch 35, any one of roasting, crushing and extraction can be operated.
[0015]
Next, when the roasting switch 36 is pressed to start roasting, energization of the second electric heater 11 and the motor 21 is started and the deodorization catalyst 17 heated by the second electric heater 11 gradually rises. Warm up. Then, after the deodorizing catalyst 17 reaches a predetermined temperature, the first electric heater 12 is energized. When energization of the first electric heater 12 is started, the bottom of the roaster 7 is gradually heated, and the green coffee beans are heated while being stirred by the stirring body 10. Then, the first electric heater 12 quickly raises the temperature of the first temperature sensor 14 provided on the plate 13.
[0016]
When the temperature in the roaster 7 rises, the green coffee beans contain about 12-13% of moisture, so steam is first generated from the heated green coffee beans, and when the temperature rises further, this time Smoke accompanied by odor is generated along with steam. At this time, since the deodorization catalyst 17 has already been activated by receiving the radiant heat of the second electric heater 11, water vapor and odor components flowing out from the exhaust port 16 are oxidized and decomposed by the deodorization catalyst 17. It is not brominated.
[0017]
When the first temperature sensor 14 detects a predetermined temperature suitable for roasting, the energization amount to the first electric heater 12 is controlled to maintain the predetermined temperature thereafter. On the other hand, when the second temperature sensor 15 detects a predetermined temperature, the amount of power supplied to the second electric heater 11 is similarly controlled. For the control of the energization amount, an appropriate method such as conventionally known on / off control or phase control can be adopted.
[0018]
By controlling the energization amount of the first electric heater 12 and the second electric heater 11, the entire roaster 7 is maintained at an ideal roasting temperature. In this case, the green coffee beans are heated so as to be wrapped, unlike the conventional device that receives excessive radiant heat from a specific direction or the temperature of the roaster 7 varies. Accordingly, the green coffee beans have a small temperature difference between the inside and the surface, and the heat penetrates into the inside from the center crack, so that the inside expands and ceases to be roasted uniformly. Further, as described above, since the heat generated by the heater is efficiently used for roasting, the roasting time can be shortened.
[0019]
Also, in the process of roasting, the chaff is peeled off from the coffee beans. If the coffee is extracted later without removing the chaff, the flavor deteriorates. Therefore, the chaff is naturally dropped from the slit 33 during roasting, and the chaff is received by the operation of the solenoid 18 through the inclined surface of the opening / closing member 19. 34 is collected.
[0020]
When the water content of the coffee beans reaches about 2 to 3% and roasting is completed, the energization of the first electric heater 12 and the second electric heater 11 is stopped, and at the same time, the solenoid 18 is energized. When the solenoid 18 is energized, the opening / closing member 19 is rotated as shown in FIG. Accordingly, the coffee beans fall to the storage unit 23 through the drop port 20 by the stirring of the stirring body 10 (in the direction of the arrow). When the discharge of the coffee beans to the storage unit 23 is completed, the energization of the motor 21 and the solenoid 18 is stopped, while the fan of the cooling unit 24 operates for a predetermined time. The cooling unit 24 forcibly cools the high-temperature coffee beans, thereby preventing the progress of carbonization and deterioration of the coffee aroma.
[0021]
The coffee beans temporarily stored in the storage unit 23 are supplied to the crushing unit 25 and crushed if there is a request for coffee extraction from the user. Here, the coffee beans are arranged on the operation panel 3 as shown in FIG. The number of coffee cups to be extracted can be selected by the changeover switch 39. For example, when 10 people are pressed, the changeover switch 39 is pressed to turn on the display lamp 10 and then the drip switch 38 is pressed to operate the crushing unit 25 to supply 10 cups of coffee powder to the extraction unit 5. To do. In the present embodiment, the pulverizing unit 25 is set to operate for 50 seconds for 10 persons. Further, when adding the amount of coffee powder, the dedicated switch 40 is pressed to operate the pulverizing unit 25 and pulverize while the switch is being pressed, and the coffee powder is supplied to the extracting unit 5.
[0022]
When the coffee powder is stored in the extraction unit 5, the heat retaining heater 28 is energized. The heat retaining heater 28 heats the heat retaining base 29 to heat the decanter 6 while heating the water in the adjacent hot water supply pipe 31. The water in the hot water supply pipe 31 is heated, and finally bubbles and steam are generated to increase the volume, and the hot water is discharged from the hot water outlet 32 as hot water. By this hot water discharge, the extraction unit 5 extracts coffee, and the extracted coffee is dropped onto the decanter 6. When the water in the water tank 4 runs out, the temperature of the heat retaining base 29 rises, so that the completion of the extraction operation can be known by detecting this temperature with an appropriate sensor. After the completion of the extraction operation, the heat in the decanter 6 is controlled to be kept at the optimum temperature by the heat retaining heater 28.
[0023]
【The invention's effect】
As described above, the coffee maker of the present invention temporarily stores the coffee beans roasted in the roasting unit in the storage unit, and from the storage unit every time there is a coffee extraction request from the user. Since the coffee beans are supplied to the pulverization unit and extracted after being pulverized, coffee can be supplied in a short time, and a plurality of operation times corresponding to the amount of coffee powder pulverized in the pulverization unit are set, and a changeover switch for switching between them Since a dedicated switch that activates the crushing unit only during pressing is provided, the user can freely select the number of cups of coffee by operating one of the switches, and the amount of coffee grounds can also be adjusted by the user. Since it can be adjusted according to preference, the convenience of the user is improved and the coffee maker is excellent in practicality.
[Brief description of the drawings]
FIG. 1 is an external view illustrating a coffee maker according to an embodiment of the present invention.
FIG. 2 is a configuration diagram illustrating a coffee maker according to an embodiment of the present invention.
FIG. 3 is a configuration diagram illustrating details of a roaster according to an embodiment of the present invention.
4 is a configuration diagram of the inside of the roaster as viewed from the direction of arrow V in FIG. 3;
FIG. 5 is a diagram illustrating an operation panel according to an embodiment of the present invention.
FIG. 6 is a configuration diagram illustrating the operation of the opening / closing member according to the embodiment of the present invention.
[Explanation of symbols]
7 Roaster 23 Storage Unit 25 Crushing Unit 30 Hot Water Supply Unit 5 Extraction Unit 39 Switch 40 Dedicated Switch

Claims (1)

A roasting machine for roasting coffee beans, a storage unit for temporarily storing roasted coffee beans, a cooling unit for cooling coffee beans, a crushing unit for crushing coffee beans, and water from a water tank A hot water supply unit that heats and supplies the hot water, and an extraction unit that extracts coffee from the hot water supplied from the hot water supply unit and the crushed coffee powder. In the coffee maker that supplies coffee beans temporarily stored in the pulverizer to the pulverizer and determines the amount of coffee powder pulverized in the pulverizer according to the operation time of the pulverizer, the operation time corresponding to the predetermined coffee powder amount A coffee maker characterized by providing a changeover switch for setting a plurality of and switching between them, and a dedicated switch for operating the pulverizing unit only while the switch is pressed.

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