JPH06154094A - Coffee kettle - Google Patents

Abstract

(57) [Summary] [Purpose] In a coffee brewer capable of crushing coffee beans and extracting coffee liquid, shorten the time from the end of grinding of coffee beans to the start of extraction of coffee liquid. To do. [Structure] Start switch 15, heating control means 16,
It has a temperature detection means 17 and a motor control means 18, starts heating when the start switch 15 is operated, and when the temperature of the water circulated by the temperature detection means 17 reaches or exceeds a predetermined temperature, the motor control means 18 To start crushing coffee beans.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coffee brewer having a coffee bean crushing function and for extracting and maintaining heat of coffee liquid.

[0002]

2. Description of the Related Art In recent years, coffee brewers that crush coffee beans and extract coffee liquor from crushed coffee grounds to retain heat have been required to be able to extract more delicious coffee liquor.

For this reason, Japanese Patent Laid-Open No. 63-270012 discloses a method in which a heater is energized to heat water in a water tank at the same time as coffee beans are crushed, and hot water is immediately discharged into a basket after crushing is completed. There is.

A conventional coffee brewer of this type generally has a structure as shown in FIG. The configuration will be described below.

As shown in FIG. 7, the coffee brewer has a water container 1 which contains water and which can be detached from the main body. The water container 1 passes from the bottom of the water container 1 to the inside of the heating means 3 by the water pipe 2. Is connected to the upper part of the or the coffee liquid extraction chamber 4. . The heating means 3 heats the glass container 5 containing the water introduced into the water pipe 2 and the extracted coffee liquid. The crushing means 7 installed in the crushing chamber 6 for crushing coffee beans is driven by the motor 8, and the motor control means 9 is driven by the motor 8.
The energization is controlled. The coffee beans crushed by the crushing means 7 are sent to the extraction chamber 4 through a porous filter 10 which allows powder having a predetermined size or less to pass. The water channel switching valve 11 switches the water channel for sending the water heated by the heating means 3 to the water container 1 or the extraction chamber 4, and the heating control means 12 controls the energization of the heating means 3. The start switch 13 is a switch for instructing the operation start of the main body, and the control means 14 receives the output of the start switch 13 as an input and controls the operation pattern of the heating means 3 and the motor 8. Immediately after the start switch 13 is operated, the motor control means 9 starts to energize the motor 8 by the output from the control means 14, and the coffee beans are crushed for a predetermined time,
It is accumulated in the extraction chamber 4 through the porous filter 10.
When the crushing of the coffee beans is completed, the heating control means 12 starts to energize the heating means 3 by the output of the control means 14 and the water in the water pipe 2 is heated. The switching valve 11 switches the water passage to the water container 1 side when the temperature of the water contained in the container 1 is lower than a predetermined temperature to circulate the heated water, and when the temperature becomes higher than the predetermined temperature, the water passage is opened. Switch to the extraction chamber 4 side. In the brewing chamber 4, the water that has been heated by the heating means 3 is dripped into the stored coffee powder through the water pipe 2 to extract the coffee liquid. The extracted coffee liquid was housed in the glass container 5 and kept warm by the heating means 3.

[0006]

In such a conventional coffee brewing machine, when the start switch 13 is operated, the crushing of the coffee beans is immediately started, and then the water contained in the water container 1 is heated and then extracted. Because of the start, there was a problem that the ground coffee had a long time of being in contact with the air and the taste of the coffee was deteriorated.

The present invention is to solve the above-mentioned problems, and to start the crushing of coffee beans after the water in the container has risen to a predetermined temperature, and to start the extraction of the coffee liquid immediately after the crushing is completed. Has an aim.

[0008]

[Means for Solving the Problems] To achieve the above object, the present invention provides, as a means for solving the first problem, a water container for storing water, and water introduced from the water container is heated to supply hot water. Heating means, heating control means for controlling energization to the heating means, crushing means for crushing coffee beans, a motor for driving the crushing means, and motor control means for controlling energization of the motor, A crushing chamber in which the crushing means is installed, an extraction chamber for collecting coffee liquid by hot water supplied by accumulating the coffee powder discharged from the crushing chamber, and a water pipe attached to the water pipe under the water container, The motor control means includes a temperature detecting means for detecting the temperature of water contained in the water container and a start switch for instructing the start of the operation. Water is intended to be configured to start the grinding of the coffee beans from the detected that is higher than a predetermined temperature.

As a means for solving the second problem, a cup number setting means for setting the amount of coffee liquid to be extracted, and an output from the cup number setting means are used as inputs to calculate the time for starting the grinding of coffee beans. The crushing start time calculating means and the time measuring means for measuring the time from the start of the operation, and the motor control means, when the start of the operation is instructed, crushes the coffee beans after the time obtained by the crushing start time calculating means has elapsed. Is configured to start.

Further, as means for solving the third problem, a water amount detecting means for detecting the water amount of the water contained in the water container, and a time for starting the crushing of the coffee beans by using the output of the water amount detecting means as an input. Crushing start time calculating means for calculating,
Comprising a time counting means for counting the time from the start of the operation, the motor control means is configured to start the crushing of the coffee beans after the lapse of the time calculated by the crushing start time calculating means when the start of the operation is instructed. Is.

[0011]

According to the present invention, in the first means for solving the above problems, the crushing of the coffee beans is started after the water contained in the water container has risen to a predetermined temperature, and the extraction is carried out after the crushing is completed. , The time from the end of crushing coffee beans to the extraction will be shortened.

In the second means for solving the problem, the amount of water is detected by inputting into the number-of-cups setting means, and the time from the start of operation to the start of crushing the coffee beans can be determined in accordance with the amount of water, so The time from the end to the extraction will be shortened.

Further, in the third means for solving the problem, the amount of water contained in the water container can be detected, and the time from the start of operation to the start of crushing coffee beans can be determined in accordance with the amount of water, so that from the end of crushing The time to extraction will be shortened.

[0014]

【Example】

(Embodiment 1) Hereinafter, a first embodiment of the present invention will be described with reference to FIG.
The description will be made with reference to FIG. The same components as those of the conventional example are designated by the same reference numerals and the description thereof will be omitted.

FIG. 1 is a block diagram showing the structure of the coffee brewing machine of the first embodiment. As shown in the drawing, a start switch 15 for instructing the operation start of the main body and the output of the start switch 15 are input. Then, the output of the heating control means 16 that starts energizing the heating means 3 when the operation is started and the output of the temperature sensing element 17a attached to the water pipe 2 below the water container 1 is
The A / D converter 17b performs A / D conversion to detect the temperature of the water contained in the water container 1, and the output of the temperature detection means 17, the start switch 15, and the temperature detection means 17 is input to the motor 8. Motor control means 1 for controlling energization
Eight. In this embodiment, a heater is used as the heating means 3 and a thermistor is used as the temperature sensitive element 17a. Further, the heating control means 16 and the motor control means 1
8 is realized by a one-chip microcomputer.

The operation of the present embodiment having the above structure will be described with reference to FIG. When the start switch 15 is operated to start the operation of the coffee brewer, step 10
In 1, the switching valve 11 is switched to the water container 1 side, the heating control means 16 energizes the heating means 3 to start heating / circulation of water, and proceeds to step 102. Step 10
In 2, the temperature detector 17 detects the temperature k of the water contained in the water container 1, and the process proceeds to step 103. In step 103, the motor control means 18 compares the temperature k detected in step 102 with a predetermined water temperature KO (KO = 50 ° C. in the present embodiment) for starting the grinding of coffee beans, and the detected water temperature Is lower than the predetermined temperature (k
<KO) Returning to step 102, temperature detection is repeated again, and if the detected water temperature is equal to or higher than a predetermined temperature (k ≧ KO), the process proceeds to step 104. In step 104, the motor control means 18 energizes the motor 8 to start the crushing of the coffee beans, and when the crushing is completed, the power supply to the motor 8 is stopped. After that, the switching valve 11 is switched to the brewing chamber 4 side to start the extraction of the coffee liquid.

As a result, the coffee beans are crushed after the water contained in the water container 1 reaches a predetermined temperature KO or higher, so that the time from the crushing to the extraction of the coffee liquid is shortened. can do. Although the switching valve 11 is switched to the water container 1 side after the start switch 15 is operated in this embodiment, the same effect can be obtained by switching the switching valve 11 immediately after the commercial power source is turned on. Further, the end of the crushing of the coffee beans may be determined by the energization time of the motor 8, or the same effect can be obtained even if the crushing completion detecting means is separately provided to end the crushing.

(Embodiment 2) Next, a second embodiment of the present invention will be described with reference to FIGS. The same components as those in the first embodiment are designated by the same reference numerals and the description thereof will be omitted.

FIG. 3 is a block diagram showing the construction of the coffee brewing machine of the second embodiment. As shown in the figure, a start switch 15 for instructing the operation start of the main body and the output of the start switch 15 are input. Then, when the operation is started, the heating control means 19 that starts energizing the heating means 3, the cup number setting means 20 that sets the amount of coffee liquid to be extracted in the unit of the number of cups, and the cup number setting means 20. The time from when the heating by the heating means 3 is started by the output of the crushing start time calculation means 21 for calculating the time Tms from the start of heating to the start of the crushing of the coffee beans, and the output of the motor control means 23. and a timing means 22 for timing t. The motor control means 23 is a heating control means 19,
The motor 8 is controlled by using the outputs of the crushing start time calculating means 21 and the time measuring means 22 as inputs. In the present embodiment, the heating control means 19, the crushing start time calculation means 21, the clocking means 22 and the motor control means 23 are realized by a one-chip microcomputer.

With the above-mentioned structure, the operation of this embodiment will be described with reference to FIG. When the start switch 15 is operated to start the operation of the coffee brewer, the switching valve 11
Is switched to the water container 1 side, and in step 201, the crushing start time calculating means 21 calculates the time Tms from the start of heating to the start of crushing coffee beans from the amount of water set by the cup number setting means 20, and proceeds to step 202. In step 202, the heating control means 19 energizes the heating means 3 to start heating / circulation of water, and the process proceeds to step 203. In step 203, the clocking means 22 is reset (t = 0) by the output of the motor control means 23 and the clocking of the time t is started. At step 204, the elapsed time t from the start of heating is output from the time measuring means 22 and the routine proceeds to step 205. In step 205, the time t measured by the motor control means 23 is compared with the time Tms to start the crushing. If the elapsed time is shorter than the crushing start time (t <Tm
s) Return to step 204 and repeat the counting of the elapsed time t. If the elapsed time is equal to or longer than the grinding start time (t ≧ Tms), proceed to step 206. In step 206, the motor control means 23 energizes the motor 8 to start the crushing of the coffee beans, and when the crushing is completed, the power supply to the motor 8 is stopped. After that, the switching valve 11 is switched to the brewing chamber 4 side to start the extraction of the coffee liquid.

As a result, the time to start the crushing can be obtained from the amount of water set by the cup number setting means 20, and the crushing of the coffee beans is started after the temperature of the water contained in the water container 1 rises. Therefore, the time from the end of pulverization to the start of extraction of coffee liquid can be shortened. In this embodiment, the time Tms from the start of heating to the start of crushing coffee beans is calculated after the operation of the main body, but the operation is performed after the number of cups is set by the cup number setting means. Even if the calculation of Tms is performed before the start, the same effect can be obtained.

(Embodiment 3) Next, a third embodiment of the present invention will be described with reference to FIGS. The same components as those in the first embodiment are designated by the same reference numerals and the description thereof will be omitted.

FIG. 5 is a block diagram showing the construction of the coffee brewing machine of the third embodiment. As shown in the drawing, a water amount detecting means 24 for detecting the water amount v contained in the water container 1,
Using the output of the water amount detection means 24 as an input, the grinding start time calculation means 25 for obtaining the time Tms from the start of operation to the start of grinding coffee beans, and the motor control means 2
7 is provided to measure the time t after the heating by the heating means 3 is started. The motor control means 27 controls the motor 8 by using the outputs of the heating control means 19, the crushing start time calculating means 25 and the time counting means 26 as inputs. In the present embodiment, the heating control means 19, the crushing start time calculation means 25, the time counting means 26 and the motor control means 27 are realized by a one-chip microcomputer.

In the above structure, the operation of this embodiment will be described with reference to FIG. 6. When the start switch 15 is operated to start the operation of the coffee brewer, the switching valve 1 is operated.
1 is switched to the water container 1 side, and in step 301, the water amount detecting means 24 detects the water amount v stored in the water container 1 and the process proceeds to step 302. In step 302, the crushing start time calculating means 25 calculates the time Tms from the start of heating to the start of crushing coffee beans from the amount of water detected by the water amount detecting means 24, and proceeds to step 303. Step 3
In 03, the heating control means 19 energizes the heating means 3 to start heating / circulation of water and proceed to step 304. In step 304, the time measuring means 26 is reset (t = 0) by the output of the motor control means 27 and the time counting of the time t is started. In step 305, the elapsed time t from the start of heating is output from the time measuring means 26 and the process proceeds to step 306. In step 306, the motor control means 27 measures the time t measured by the time measurement means 26 and the time Tms for starting the pulverization.
Make a comparison with. If the elapsed time is shorter than the crushing start time (t <Tms), the process returns to step 305 and the elapsed time t is repeatedly measured, and the elapsed time is equal to or longer than the crushing start time (t ≧ Tm).
If s), the process proceeds to step 307. In step 307, the motor control means 27 energizes the motor 8 to start the crushing of the coffee beans, and when the crushing is completed, the power supply to the motor 8 is stopped.

After that, the switching valve 11 is switched to the brewing chamber 4 side to start the extraction of the coffee liquid.

As a result, the time to start crushing can be calculated from the amount of water detected by the water amount detecting means 24.
Since the crushing of the coffee beans is started after the temperature of the water contained in the water container 1 rises, the time from the end of the crushing to the extraction of the coffee liquid can be shortened.

[0027]

As is apparent from the above description, according to the present invention, when the start switch is operated, heating is started, and when the temperature of the water circulated by the temperature detecting means rises to a predetermined temperature, the motor control is performed. Since the crushing of the coffee beans is started by the means, the extraction can be started immediately after the crushing is completed.

Further, by setting the amount of water by the cup number setting means, the time from the start of heating to the start of crushing coffee beans can be obtained, and the time from the end of crushing coffee beans to the start of extraction can be shortened. it can.

Further, by detecting the amount of water by the water amount detecting means, the time from the start of heating to the start of crushing coffee beans can be obtained, and the time from the end of crushing coffee beans to the start of extraction can be shortened. It is a thing.

[Brief description of drawings]

FIG. 1 is a block diagram of a coffee brewer according to a first embodiment of the present invention.

FIG. 2 is a flowchart of the operation of the coffee brewing machine.

FIG. 3 is a block diagram of a coffee brewer according to a second embodiment of the present invention.

FIG. 4 is a flowchart of the operation of the coffee brewer

FIG. 5 is a block diagram of a coffee brewer according to a third embodiment of the present invention.

FIG. 6 is a flowchart of the operation of the coffee brewing machine.

FIG. 7 is a block diagram of a conventional coffee brewer.

[Explanation of symbols]

 1 Water Container 2 Water Pipe 3 Heating Means 4 Extraction Chamber 6 Grinding Chamber 7 Grinding Means 8 Motor 15 Start Switch 16 Heating Control Means 17 Temperature Detection Means 18 Motor Control Means

Claims (3)

[Claims] 1. A water container for containing water, a heating means for heating water introduced from the water container to supply hot water, a heating control means for controlling energization to the heating means, and coffee beans crushed. Crushing means, a motor for driving the crushing means, and a motor control means for controlling energization of the motor,
A crushing chamber in which the crushing means is installed, an extraction chamber for extracting coffee liquid by hot water supplied by collecting coffee powder discharged from the crushing chamber, and the water attached to a water pipe under the water container. The temperature control means for detecting the temperature of the water contained in the container, and the start switch for instructing the start of the operation, the motor control means, when the start switch is instructed to start the operation, A coffee brewer configured to start crushing coffee beans after detecting that the temperature of water has risen above a predetermined temperature. 2. A cup number setting means for setting the amount of coffee liquid to be extracted, a grinding start time calculating means for calculating a time for starting the grinding of coffee beans by using an output of the cup number setting means as an input, and an operation start. 2. The motor control means is configured to start the crushing of the coffee beans after a lapse of the time calculated by the crushing start time calculating means when the start of the operation is instructed. The described coffee maker. 3. A water amount detecting means for detecting the water amount of water contained in the water container, and a crushing start time calculating means for calculating a time to start crushing coffee beans by using an output of the water amount detecting means as an input. Claims, wherein the motor control means is configured to start crushing the coffee beans after a lapse of the time calculated by the crushing start time calculating means when the start of the operation is instructed. Item 1. A coffee brewer according to item 1.