JP3518522B2 - Coffee kettle - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coffee brewer in which heating and extraction of coffee liquid and heat retention are constituted by the same heating means.

[0002]

2. Description of the Related Art FIG. 13 shows a heater 680 in a conventional example.
7 is a graph showing the temperature of the heating means 4 by the temperature detecting means 5, the temperature of the coffee solution in the heat retaining container, and the passage of time when W of 2 cups of coffee solution of 320 ml is extracted at a heater energization rate of 12/16 seconds. . The conventional coffee brewer is the same as the coffee brewer of Embodiment 1 described later in FIG. 1 except for the heating control means 8, and other configurations are the same. Therefore, referring to FIG. Will be explained. Water pipe 3
The water in the water container 1 that has flowed into the chamber is heated by the heater 4a, pushed up in the water pipe 3 by the vapor pressure at the time of boiling, and is discharged to the extraction unit 2. Further, the heater for heating and keeping the temperature of the heat insulation container 6 containing the coffee liquid extracted by the extraction unit 2 is also used as the heater for extraction heating 4 a for heating water and sending it to the extraction unit 2. The temperature of the coffee liquid in the heat insulating container 6 is kept warm by controlling the temperature by the temperature detecting means 5 attached to the heating means 4. In such a conventional coffee brewing machine, in order to reduce the concentration of the coffee liquid extracted into the heat insulation container 6, the coffee is usually slowly extracted over time. for that purpose,
By heating the heater 4a by the duty control energization or the phase control energization by the heating control means 8, the heating power is reduced and the interval of intermittent hot water supply from the water pipe 3 to the extraction part 2 is extended.
After that, when all the water in the water container 1 is heated and discharged to the extraction section 2, the temperature of the heating means 4 rapidly rises. When the temperature of the heating means rises to a temperature at which it is judged that the hot water supply has ended, the heating control means 8 stops the energization of the heater 4a.

[0003]

In such a conventional coffee brewing machine, in order to reduce the concentration of the coffee liquid, the temperature of the heating means is supplied to the hot water while the heating power is reduced by energizing the heater with duty control. Since the temperature is raised to the end temperature, the rate of temperature rise is lower than the rate of temperature rise during continuous energization. Therefore, the time from the start of the temperature rise of the heater to the end temperature of the hot water supply becomes long, so the heat insulation container 6
The amount of heat radiated from is increased and it becomes difficult to obtain the effect of additional heating. When the temperature of the heating means 4 by the temperature detecting means 5 reaches the hot water supply end temperature and the power is turned off, the temperature of the coffee liquid is about 81.5 ° C., which is an appropriate temperature range for drinking when it is generally said that coffee is delicious. There is a problem that the temperature falls below 82 ° C to 85 ° C.

The present invention solves the above-mentioned conventional problems. In a structure in which the coffee concentration is controlled by energizing the heater with duty control energization or phase control energization, a coffee brewing machine that can bring the finished temperature at the end of hot water supply to an appropriate temperature. The purpose is to provide a container.

[0005]

Means for Solving the Problems To solve the above-mentioned conventional problems
To this end, the present invention provides a water container for containing water and coffee grounds.
And a water container for storing coffee liquid and extracting the coffee liquid.
And guide the water in this water container to the extraction section.Water pipe
And a container for containing the coffee liquid extracted from the extraction section.
In addition to heating the water and supplying hot water to the extraction part
A heating means for heating the coffee liquid in the heat insulation container,
A temperature detecting means for detecting the temperature of the heating means;
Output of the heating means based on the temperature detected by the temperature detection means
And heating control means for changing
Is the temperature detection hand when the temperature of the heating means begins to rise.
If the detected temperature of the stage reaches the first predetermined temperature, it will be set thereafter.
At the timing of increasing the heating output of the heating means,
Performs reheating to heat the coffee liquid in the heat insulation container
It was done like this.

As a result, the heat-retaining container 6 is heated with a heating output higher than the heating output during extraction, so that the rate of temperature rise is not reduced and the time from the start of temperature rise of the heater to the end temperature of hot water supply is shortened. Therefore, the amount of heat radiated from the heat insulation container 6 can be minimized and the effect of reheating can be enhanced.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claim 1 is a water container for containing water, an extraction unit for containing coffee grounds and extracting coffee liquid, and a water container connected to the water container. A water pipe for guiding the water to the brewing section, a heat retaining container for storing the coffee liquid extracted from the brewing unit, heating the water to supply hot water to the brewing unit, and heating for heating the coffee liquid in the heat retaining container. Means, temperature detecting means for detecting the temperature of the heating means, and heating control means for changing the heating output of the heating means based on the temperature detected by the temperature detecting means, wherein the heating control means is the heating means. If the temperature detected by the temperature detection means reaches the first predetermined temperature, the heating of the
From the start of energization to the means, the temperature detected by the temperature detecting means
The time until the temperature exceeds the first predetermined temperature is the first predetermined temperature.
Only when the time is shorter than the time, the heating output of the heating means is increased and the additional heating is performed to heat the coffee liquid in the heat retaining container, so that the extraction is performed at a relatively low output over time. Since the efficiency is increased and the heat-retaining container is heated with a heating output that is higher than the heating output during extraction after extraction, the rate of temperature increase does not decrease from that during extraction operation, and the temperature rise from the heater starts to the end of hot water supply Since the time can be shortened, the amount of heat released from the heat insulation container will be minimized, and the effect of reheating will be increased,
The temperature of the coffee liquid can be adjusted to an appropriate temperature, and delicious coffee can be provided.

Further, since it is detected that the water introduced from the water container to the extraction section via the water pipe is exhausted and the start timing of the reheating heating is determined based on the detection information, stable reheating operation is possible. The effect will be obtained,
The finished temperature of the coffee liquid can be stabilized and brought to an appropriate temperature.

Furthermore, when the amount of water in the water container is small
Only reheating can be done, especially hot water end temperature
When extracting a small amount, the finished temperature tends to be low when reaching
Only the reheating effect will be increased, and conversely the hot water end temperature
When the temperature reaches the end, the temperature of the coffee liquid is relatively high
It is possible to suppress the additional heating at the time of extracting a large amount.

According to a second aspect of the present invention, a water container for storing water, an extraction unit for storing coffee powder and extracting coffee liquid, and a water container are connected to the water container, and the water in the water container is connected to the water container. A water pipe leading to the extraction unit, a heat retaining container that stores the coffee liquid extracted from the extraction unit, a heating unit that heats water to supply hot water to the extraction unit, and heats the coffee liquid in the heat retaining container, The temperature detection means for detecting the temperature of the heating means, and the heating control means for changing the heating output of the heating means based on the detection temperature of the temperature detection means, the heating control means, the detection temperature of the temperature detection means If the rate of increase exceeds the specified value ,
From the start of energization to the heating means, the temperature detection means
Time until the detected temperature exceeds the first predetermined temperature
Is shorter than the first predetermined time, the heating means is not heated.
Increase the heat output and heat the coffee liquid in the heat insulation container
By starting the reheating heat that, without depending on the absolute value of the water temperature of the water container, for that lost water derived from the water container to the extraction unit through a water pipe can be accurately detected promptly, Bath The start timing of the heating time can be made more appropriate, and a more stable reheating effect can be obtained, and the finished temperature of the coffee liquid can be further stabilized and set to an appropriate temperature.

Further, when the amount of water in the water container is small
Only reheating can be done, especially hot water end temperature
When extracting a small amount, the finished temperature tends to be low when reaching
Only the reheating effect will be increased, and conversely the hot water end temperature
When the temperature reaches the end, the temperature of the coffee liquid is relatively high
It is possible to suppress the additional heating at the time of extracting a large amount.

[0012] claims the invention is described in claim 3 or 4, comprising a finished temperature selection means for performing temperature selection the finished JP to extraction <br/> out immediately after the end of the coffee solution, the heating control means the finished temperature selection means By performing the reheating heating according to the selection by the above, the finished temperature of the coffee can be adjusted to an appropriate temperature according to the preference of the user.

The heating control means detects the temperature detection means.
When the temperature reaches the hot water supply end temperature, the additional heating is stopped.
In addition, for each selected temperature of the finished temperature selection means,
By changing the hot water supply end temperature,
Change the heating time and the hot water supply end temperature by continuous energization
You can make coffee according to your preference.
The bittern temperature can be adjusted over a wide range to obtain an appropriate temperature.

According to a fifth aspect of the present invention, in particular, the heating control means according to the third or fourth aspect displays the selection state of the finished temperature selection means on the display element. By doing so, it is possible to easily discriminate even if the user does not memorize the selected state, and thus it is possible to prevent a selection error.

In the invention according to claim 6 or 7 , in particular, the heating control means terminates the reheating heating when the temperature detected by the temperature detection means reaches the hot water supply end temperature, and the heating means Depending on the temperature detected by the temperature detecting means at the start of energization, by controlling the hot water supply end temperature to be corrected, the finished temperature of the coffee liquid becomes too low,
It is possible to prevent the temperature from becoming too high, and to stabilize the temperature of the finished coffee to the target temperature regardless of the ambient temperature.

[0016]

EXAMPLE 1 Example 1 of the present invention will be described with reference to FIG. In FIG. 1, 1 is a water container, 2 is a paper filter attached, and an extraction unit for putting coffee powder is connected to the bottom of the water container 1 at one end, and the other end is positioned above the extraction unit 2. The water pipes 4 and 4 have a rated power of 100 at a part of the water pipe 3.
V-680 W is a heating means configured to have a heater 4a attached thereto, 5 is a temperature detecting means attached to the heating means 4, and 6 is a heat retaining container for containing the coffee liquid dripped from the extraction section 2. Water in the water container 1 is introduced into the water pipe 3 via a check valve 7 installed at the bottom of the water container 1. Reference numeral 8 is a heating control means for controlling the power supply to the heater 4a of the heating means 4 based on the temperature detected by the temperature detection means 5. In such a configuration, the hot and cold water heated by the heating means 4 pushes up the check valve 7 by the vapor pressure due to boiling to stop the running water from the water container 1 while pushing up the inside of the water pipe 3 to push up the extraction portion 2 Is discharged to. After that, this operation is repeated until all the water in the water container 1 is discharged to the extraction unit 2. When all the water in the water container 1 is heated and discharged to the extraction part 2, the temperature of the heating means 4 rapidly rises. The heating control means 8 turns off the power supply to the heating means 4 when the temperature detected by the temperature detection means 5 reaches 125 ° C. which is the hot water supply end temperature. After that, keep warm container 6
Keep the coffee liquid inside warm.

The operation of the heating control means 8 in the coffee brewer configured as described above will be described with reference to the flowchart of FIG. When heating is started, heating control means 8
Energizes the heater 4a with a duty cycle of 12/16 seconds (step 1). Then, when the water in the water container 1 is exhausted and the temperature of the heating means 4 begins to rise and the temperature detected by the temperature detection means 5 becomes 80 ° C. or higher which is the first predetermined temperature, the heater 4a is switched to continuous energization for heating. Continue (step 2). After that, when the temperature detected by the temperature detecting means 5 becomes 125 ° C. or higher, which is the end temperature of hot water supply, the energization is terminated (step 3).

FIG. 3 shows two cups 320 m in the first embodiment.
It is a graph which shows the temperature of the heating means 4 by the temperature detection means 5, the temperature of the coffee liquid in a heat insulation container, and the progress of time at the time of extracting 1 minute of coffee liquid. The temperature of the coffee liquid at the end of energization at the hot water supply end temperature is 81.5 ° C in the conventional example, and 83.0 ° C in the first example.

As described above, by switching to the continuous energization from the first predetermined temperature until the hot water supply end temperature is reached, even when the heating power is reduced so as to increase the extraction time in order to increase the coffee concentration, at the time of reheating. Since the electric power is maximized, the finished temperature of the coffee liquid at the end of hot water supply can be adjusted to a suitable temperature range of 82 ° C to 85 ° C at the time of drinking, which is said to be delicious, without lowering the reheating effect.

In this embodiment, duty control is performed until the temperature detected by the temperature detecting means 5 reaches the first predetermined temperature, and continuous energization is switched after the temperature reaches the first predetermined temperature. Even after the detected temperature of the means 5 reaches the first predetermined temperature, the same effect can be obtained by performing the duty control so that the average heating output is increased.

Further, in this embodiment, the heating output is increased immediately after the temperature detected by the temperature detecting means 5 reaches the first predetermined temperature, but the heating output increasing timing may be appropriately delayed depending on the situation. . Further, the change of the heating output may be phase control.

Second Embodiment A second embodiment of the present invention will be described with reference to FIGS. 4 and 5. The present embodiment has the same configuration as that of the first embodiment except for the heating control means 8, and therefore its description is omitted.

As shown in the flow chart of the heating control means of FIG. 4, the difference from the first embodiment is that the heater 4a is duty-energized at a cycle of 12/16 seconds and then to continuous energization (step 2). The condition for switching is that the temperature rise of the detected temperature is 1.7 ° C. or more per unit time. FIG. 5 shows detected temperatures of the respective heating means 4 when the water container 1 is heated by adding water at about 20 ° C. and when heated by adding water at about 35 ° C. The higher the temperature of the water put in the water container 1, the higher the stable temperature of the heating means 4 during the heat extraction. In such a case, the first embodiment
If the timing for switching to continuous energization is set as a threshold value based on an absolute value, the timing for switching to continuous energization will change even if the same amount of water is extracted. The finished temperature of the coffee liquid at the end changes.

In this embodiment, the condition for switching to the continuous energization is judged by the temperature rise rate judgment of the detected temperature.
Even if the temperature of the water in the water container 1 is changed, the timing of switching to continuous energization is almost constant, so the heating time for reheating by continuous energization is stable, and the stable temperature of the coffee liquid at the end of hot water drinking is stable. It can be adjusted to the optimum temperature range.

(Third Embodiment) A third embodiment of the present invention will be described with reference to FIGS. 6 and 7. The present embodiment has the same configuration as that of the first embodiment except for the heating control means 8, and therefore its description is omitted.

As shown in the flowchart of the heating control means of FIG. 6, the difference from the first embodiment is that the time until the temperature detected by the temperature detection means exceeds the first predetermined temperature is shorter than the first predetermined time. Sometimes, the temperature detection means controls to switch to the continuous energization until the temperature detected by the temperature detection means exceeds the first predetermined temperature and reaches the hot water supply end temperature.

In FIG. 7, 2 cups 320 ml in the water container 1, 2
5 cups and 680 ml when heated by adding water at 0 ° C,
The detected temperatures of the respective heating means 4 when water of 20 ° C. is added and heated are shown. The larger the amount of water put in the water container 1, the longer the time for extracting water by heating. Usually, if the time for heating and extracting water is long, the time for heating the coffee liquid already extracted in the heat retaining container 6 also becomes long, and the coffee temperature before the additional heating is increased. If the reheating time by continuous energization is the same time, the finished temperature will be higher and will be the upper limit of the optimum temperature range of 82 ° C to 85 ° C at the time of drinking.
Therefore, in the present embodiment, the first predetermined time is set to 5 minutes so that the reheating heating by continuous energization is performed when the finished temperature of the coffee liquid at the end of hot water supply is 320 ml or less, which is relatively low. is doing. As a result, the finished temperature of the coffee liquid can be set to about 83.0 ° C., which is the center of the appropriate temperature range of 82 ° C. to 85 ° C. at the time of drinking for both 2 cups and 5 cups.

Fourth Embodiment A fourth embodiment of the present invention will be described with reference to FIGS. 8 and 9. In this embodiment, the description of the same configuration as that of the first embodiment will be omitted. In FIG. 8, reference numeral 9 is a completion temperature selecting means for selecting whether the temperature of the coffee liquid at the completion of hot water supply is high or low.

The operation of the heating control means 8 in the coffee brewer configured as described above will be described with reference to the flowchart of FIG. First, high temperature or low temperature is selected by the finished temperature selecting means (step 1). When heating is started, the heating control means 8 energizes the heater 4a with a duty of a cycle of 12/16 seconds (step 2). Then, when the water in the water container 1 is exhausted and the temperature of the heating means 4 starts to rise and the temperature detected by the temperature detection means 5 becomes 80 ° C. or higher which is the first predetermined temperature, if the finished temperature selection is high. The heater 4a is switched to continuous energization to continue heating (step 3a). If the final temperature selection is low, the heater 4a is continuously energized with a duty cycle of 12/16 seconds (step 3b). After that, when the temperature detected by the temperature detecting means 5 becomes 125 ° C. or higher, which is judged as the hot water supply end temperature, the energization is ended (step 4). Thus, when the selection by the finished temperature selection means is instructed, the temperature in the temperature detection means exceeds the first predetermined temperature and the continuous energization is switched until the hot water supply end temperature is reached and the coffee in the heat retaining container is switched. By heating and reheating the liquid, it is possible to change the finished temperature of the coffee according to the taste of the user.

(Fifth Embodiment) A fifth embodiment of the present invention will be described with reference to FIG. The present embodiment has the same configuration as that of the fourth embodiment except for the heating control means 8, and thus the description thereof is omitted.

FIG. 10 shows a two cup 320 according to the fourth embodiment.
It is a graph which shows the relationship between the temperature of the heating means 4 by the temperature detection means 5 when extracting the coffee liquid for ml, and the hot water supply completion temperature of each selection temperature. In this embodiment, the completion temperature selection means is capable of selecting three stages of low temperature, medium temperature and high temperature, and the completion temperature of the coffee liquid in each case is 82 ° C. when low temperature is selected and 83 ° C. when medium temperature is selected. When the high temperature is selected, the temperature is 85 ° C. In FIG. 10, the value of the hot water supply end temperature at each selection is 115 ° C. when the low temperature is selected, 125 ° C. when the medium temperature is selected, and 135 ° C. when the high temperature is selected. In this way, by changing the hot water supply end temperature for each selection temperature of the finished temperature selection means, it is possible to change the heating time by continuous energization and the heating temperature at the end of hot water supply, according to the preference of the user. The finished temperature of coffee can be changed over a wide range.

(Sixth Embodiment) A sixth embodiment of the present invention will be described with reference to FIG. The present embodiment has the same configuration as that of the fourth embodiment except for the heating control means 8, and thus the description thereof is omitted. Reference numeral 10 is a display means using a light emitting diode. The completion temperature selection means 9 has three options of high temperature, medium temperature, and low temperature, and the display means 10 causes the heating control means 8 to display the selected temperature. As a result, it is possible to easily discriminate even if the user does not memorize the selected state, and it is possible to prevent the selection error.

(Seventh Embodiment) A seventh embodiment of the present invention will be described with reference to FIG. The present embodiment has the same configuration as that of the first embodiment except for the heating control means 8, and therefore its description is omitted. FIG. 12 is a correction value table of the hot water supply end temperature according to the temperature detected by the temperature detection means 5 at the start of heating. The standard is ambient temperature of 20 ° C and temperature range 3 of 15 ° C.
When the temperature is up to 25 ° C and the temperature is set to 125 ° C without correction, the final temperature of the coffee liquid when 320 ml of 2 cups is aimed at 83 ° C. For example, the detected temperature at the start of heating is 10 ° C
If so, since it is the region 2, the hot water supply end temperature is set to the initial value 12
The correction value + 5.5 ° C is added to 5 ° C to obtain 130.5 ° C.
The measured values with and without correction in each region are almost as intended as shown in FIG. Here, the temperature of 35 ° C. or higher in the region 5 is uniformly set to −6.5 ° C., but when the coffee brewer is continuously used, the heating means 4 is not sufficiently cooled and the detected temperature at the start of heating is 100. It may be over ℃,
The correction stops working. This embodiment is effective when the temperature of the heating means 4 is the same as the ambient temperature, and if a dedicated temperature detecting means for faithfully detecting the ambient temperature is provided,
The correction will work reliably.

In this way, by correcting the hot water supply end temperature, it is possible to prevent the coffee liquid temperature from varying at the time of completion due to the ambient temperature, so that the target temperature can be stabilized.

[0035]

As described above, according to the present invention, in the structure in which the heating power of the heater is changed to control the concentration of the coffee liquid, the reheating is efficiently performed, and the coffee completion temperature at the end of hot water supply is adjusted to an appropriate temperature. And can serve delicious coffee.

[Brief description of drawings]

FIG. 1A is a configuration diagram of a coffee brewer according to a first embodiment of the present invention, and FIG. 1B is an electric circuit diagram of the same.

FIG. 2 is a flowchart of a heating control unit according to the first embodiment of the present invention.

FIG. 3 is a temperature graph of heating means and coffee liquid in Example 1 of the present invention.

FIG. 4 is a flowchart of a heating control unit according to the second embodiment of the present invention.

FIG. 5 is a temperature graph of heating means and coffee liquid in Example 2 of the present invention.

FIG. 6 is a flow chart of heating control means in Embodiment 3 of the present invention.

FIG. 7 is a temperature graph of heating means and coffee liquid in Example 3 of the present invention.

FIG. 8 (a) is a configuration diagram of a coffee brewer according to a fourth embodiment of the present invention (b) is an electric circuit diagram thereof

FIG. 9 is a temperature graph of heating means and coffee liquid in Example 4 of the present invention.

FIG. 10 is a temperature graph of heating means and coffee liquid in Example 5 of the present invention.

FIG. 11A is a configuration diagram of a coffee brewer according to a sixth embodiment of the present invention, and FIG. 11B is an electric circuit diagram of the same.

FIG. 12 is a diagram showing a correction value table for hot water supply end temperature in Embodiment 7 of the present invention.

FIG. 13 is a temperature graph of heating means and coffee liquid in a conventional example.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Water container 2 Extraction part 3 Water pipe 4 Heating means 4a Heater 5 Temperature detection means 6 Insulation container 8 Heating control means 9 Finished temperature selection means 10 Display means

Claims (7)

(57) [Claims] 1. A water container for containing water, an extraction unit for containing coffee grounds for extracting coffee liquid, a water pipe connected to the water container and for guiding the water in the water container to the extraction unit, A heat-retaining container that stores the coffee liquid extracted from the extraction unit, a heating unit that heats water to supply hot water to the extraction unit, and that heats the coffee liquid in the heat-retaining container, and the temperature of the heating unit is detected. The temperature detection means and the heating control means for changing the heating output of the heating means based on the detection temperature of the temperature detection means, the heating control means, the temperature of the heating means starts to rise, When the detected temperature reaches the first predetermined temperature, the temperature is maintained at a predetermined timing thereafter and from the start of energization of the heating means.
Until the temperature detected by the detection means exceeds the first predetermined temperature
The coffee brewer that increases the heating output of the heating means and heats the coffee liquid in the heat retaining container only when the time is shorter than the first predetermined time . 2. A water container for containing water, an extraction unit for containing coffee grounds for extracting coffee liquid, a water pipe connected to the water container and for guiding the water in the water container to the extraction unit, A heat-retaining container that stores the coffee liquid extracted from the extraction unit, a heating unit that heats water to supply hot water to the extraction unit, and that heats the coffee liquid in the heat-retaining container, and the temperature of the heating unit is detected. The temperature detection means and a heating control means for changing the heating output of the heating means based on the temperature detected by the temperature detection means, wherein the heating control means is such that the rate of increase in the temperature detected by the temperature detection means is a predetermined value. If it exceeds , the passage to the heating means will be performed at a predetermined timing thereafter.
From the start of power supply, the temperature detected by the temperature detecting means is
The time to reach the specified temperature is shorter than the first specified time
The heating output of the heating means is increased only when
A coffee brewer that starts reheating to heat the coffee liquid in the container . 3. A water container for containing water, an extraction unit for containing coffee grounds for extracting coffee liquid, a water pipe connected to the water container and for guiding the water in the water container to the extraction unit, A heat-retaining container that stores the coffee liquid extracted from the extraction unit, a heating unit that heats water to supply hot water to the extraction unit, and that heats the coffee liquid in the heat-retaining container, and the temperature of the heating unit is detected. Temperature detection means, heating control means for changing the heating output of the heating means based on the temperature detected by the temperature detection means, and the completion of the coffee liquid immediately after the completion of extraction.
When the temperature of the heating means starts to rise and the detected temperature of the temperature detecting means reaches the first predetermined temperature, the predetermined temperature is selected thereafter. At the timing, the above-mentioned completion
Depending on the selection by the temperature selection means, the increased heating power of the heating means, have rows reheating heat to heat the coffee liquor in the heat insulating container, the detected temperature of said temperature sensing means is fed
When the hot water end temperature is reached, the additional heating is finished
Together, for each temperature selected by the completion temperature selection means,
A coffee brewer configured to change the hot water supply end temperature . 4. A water container for containing water, an extraction unit for containing coffee grounds for extracting coffee liquid, a water pipe connected to the water container and for guiding the water in the water container to the extraction unit, A heat-retaining container that stores the coffee liquid extracted from the extraction unit, a heating unit that heats water to supply hot water to the extraction unit, and that heats the coffee liquid in the heat-retaining container, and the temperature of the heating unit is detected. Temperature detection means, heating control means for changing the heating output of the heating means based on the temperature detected by the temperature detection means, and the completion of the coffee liquid immediately after the completion of extraction.
And a finish temperature selecting means for selecting a bite temperature , wherein the heating control means selects the finish temperature selecting means at a predetermined timing after the rise rate of the detected temperature of the temperature detecting means exceeds a predetermined value. In response to the,
By increasing the heating output of the heating means,
Start the reheating heat to heat the coffee liquor, the temperature
When the temperature detected by the detection means reaches the hot water supply end temperature, the above-mentioned additional
When the heating process is completed, the finished temperature is selected.
The hot water supply end temperature is changed for each temperature selected by the selection means.
Slow coffee kettle. 5. The heating control means according to claim 3 which is to be displayed on a display device the selection state of the temperature selection means Voila
Or the coffee brewer according to 4 . 6. A water container for containing water, an extraction unit for containing coffee grounds for extracting coffee liquid, a water pipe connected to the water container and for guiding the water in the water container to the extraction unit, A heat-retaining container that stores the coffee liquid extracted from the extraction unit, a heating unit that heats water to supply hot water to the extraction unit, and that heats the coffee liquid in the heat-retaining container, and the temperature of the heating unit is detected. The temperature detection means and the heating control means for changing the heating output of the heating means based on the detection temperature of the temperature detection means, the heating control means, the temperature of the heating means starts to rise, if the detected temperature is a first predetermined temperature, thereafter increasing the heating output of said heating means at a predetermined timing, have rows reheating heat to heat the coffee liquor in the heat insulating container, said temperature
When the temperature detected by the detection means reaches the hot water supply end temperature, the above-mentioned additional
When the heating by heating is finished, the heating means is energized.
According to the temperature detected by the temperature detecting means at the start, the hot water supply
A coffee brewer that controls to add a correction to the end temperature . 7. A water container for containing water, an extraction unit for containing coffee grounds for extracting coffee liquid, a water pipe connected to the water container and for guiding the water in the water container to the extraction unit, A heat-retaining container that stores the coffee liquid extracted from the extraction unit, a heating unit that heats water to supply hot water to the extraction unit, and that heats the coffee liquid in the heat-retaining container, and the temperature of the heating unit is detected. The temperature detection means and a heating control means for changing the heating output of the heating means based on the temperature detected by the temperature detection means, wherein the heating control means is such that the rate of increase in the temperature detected by the temperature detection means is a predetermined value. When it exceeds, the heating output of the heating means is increased at a predetermined timing thereafter.
In addition, the reheating heating for heating the coffee liquid in the heat retaining container is started, and the temperature detected by the temperature detecting means is the end of hot water supply.
When the reheating temperature is reached, the additional heating will be terminated.
Of the temperature detection means at the start of energization to the heating means
Correct the hot water supply end temperature according to the detected temperature
Coffee brewer to control .