JPS6311123A - Coffee brewer - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] Industrial applications The present invention relates to a coffee brewer.

BACKGROUND OF THE INVENTION Conventionally, coffee brewers have been known in which a mill mechanism for grinding coffee beans and a drip mechanism are integrated, and the operation is automatically switched to drip operation after grinding the coffee beans.

That is, as shown in FIGS. 4 and 6, the coffee boiler includes a container 1 that integrates a coffee bean grinding chamber and a filtration chamber that extracts coffee liquid and separates the extracted liquid and residue. The container 1 is equipped with a cutter 3 that is rotated and driven by a motor 2 inside, and a filter 4 for separating the extract and the residue at the bottom. The heater 6 is provided with a timer 7 that controls the operating time of the motor 2 and automatically switches from energizing the motor 2 to energizing the heater 6 after the operation is completed, and a switch 8 that starts energizing the motor 2.

In the above configuration, when the timer 7 is set to the "mill" position and the switch 8 starts energizing, the coffee beans are ground by the cutter 3, and then the drip function is automatically performed. The water stored in the tank 9 is introduced into the water pipe 11 formed integrally with the heater 6 through the check valve 1°, and the hot water is heated by the steam pressure generated when the water is heated by the heater 6. Hot water is pushed up and guided to a discharge pipe 11' located above the container 1, and hot water is poured into the container 1 from this discharge pipe 11' to extract coffee liquid, and the coffee is poured into a glass container 12. This is where liquid is stored.

Furthermore, when the timer 7 is set to the "drip" position and the switch 8 is operated, only the above-described drip function is performed.

Fig. 6 shows a specific circuit diagram of the same. 13 is a thermostat, and this thermostat 13 controls its own operating temperature (hereinafter referred to as "adjustment temperature") and the temperature to which it itself is subjected (hereinafter referred to as "measurement temperature"). 0N1 depending on temperature (referred to as "temperature")
In other words, if the measured temperature is lower than the adjusted temperature, the heater 6 is turned ON, and if it is higher than the adjusted temperature, the heater 6 is turned OFF. Note that the circuit diagram in the frame 3 is the circuit diagram during the drip operation.

Problems to be Solved by the Invention When the extraction is finished, the user removes the glass container 12 and drinks an appropriate amount of coffee. Generally, the glass container 12 is removed when the amount of liquid sent from the container decreases and the liquid starts to drip.

By the way, in the extraction process, if coffee powder is soaked in hot water for too long, the extracted coffee liquid will oxidize and decompose, resulting in a bad taste. Because the filtration time is long, the coffee becomes dripping as described above, and if you decide that this is the end of extraction and remove the glass container 12, the problem is that you will not be able to get good quality coffee because the extraction takes too long. There was a point.

On the other hand, if the glass container 12 is removed too quickly, the lever 15 will block the liquid feed port 14, resulting in coffee remaining in the container 1.
There is also the problem that if left for a long time, a strange odor wafts out, making it extremely difficult to judge when the extraction is complete.

Means for Solving the Problems In order to solve the above problems, the coffee boiler of the present invention includes a tank provided in the main body and containing water, a water pipe for guiding the water in the tank, and a water pipe for directing the water. A heater that heats, a temperature sensing element that detects the temperature near the heater, a heater energization control means that controls energization of the heater, and a drip mechanism that supplies hot water to coffee grounds and extracts coffee liquid;
temperature setting means for setting the control temperature of the heater; time measuring means for measuring the time after the temperature detected by the temperature sensing element exceeds the set temperature set by the temperature setting means; Inputting each output signal of an extraction waiting time setting means for setting an extraction waiting time, the temperature sensing element, the temperature setting means, the time measuring means and the extraction waiting time setting means,
A determining means that determines that the extraction has been completed based on the fact that the detected temperature exceeds the set temperature and the extraction waiting time has elapsed;
and an alarm driven by the output of this determining means.

Effects According to the above configuration, when the extraction of coffee liquid is completed, the end is notified by the alarm, so the user can easily know that the extraction of coffee liquid has been completed without checking the state of dripping from the liquid feeding port. Therefore, the glass container can be removed at an appropriate time.

Embodiment Hereinafter, one embodiment of the present invention will be explained based on the block diagram shown in FIG.

In FIG. 1, parts that perform the same operations as in FIGS. 4 to 6 are given the same numbers, and their explanations are omitted here.

In FIG. 1, reference numeral 16 denotes a temperature sensing element for detecting the temperature near the heater e, which is installed at the position shown in FIG. 1
7 is a heater energization control means for controlling energization of the heater 6;
18 is a temperature setting means for setting the temperature during extraction, and this temperature setting means 18 is preset at a temperature higher than the boiling temperature (hereinafter referred to as "set temperature"). 19 is a temperature sensing element 16
time measuring means for measuring the time after the temperature detected by (hereinafter referred to as "detected temperature") exceeds the set temperature; 2
0 is an extraction waiting time setting means for setting an extraction waiting time after the set temperature is exceeded, and a value as a limiter of the time measuring means 19 is set. 21 is the temperature sensing element 1
6. Temperature setting means 18 ° Determining means that receives the outputs of the time measuring means 19 and the extraction waiting time setting means 20 and determines that the extraction has ended when the detected temperature exceeds the set temperature and the extraction waiting time has elapsed. 22 is a buzzer which is driven by the output of the determination means 21 after the extraction is completed;
It is a warning device such as a lamp.

In addition, in the above embodiment, the temperature setting means 18.times.time measurement means 19. Extraction waiting time setting means 2o and determination means 21
The operation is programmed and processed by the microprocessor 23.

Next, the operation of the above configuration will be explained using FIGS. 2 and 3. In FIG. 2, when the water is heated by the heater 6, the water reaches a boiling temperature, and by pouring this hot water onto the coffee powder in the container 1, extraction of coffee liquid is started. Since the set temperature in this case is set higher than the boiling temperature as described above, this operation continues as long as there is sufficient hot water in the water pipe 11. When the hot water in the "heating/extraction" water pipe 11 is almost gone and the hot water supplied from the discharge pipe 11' is in a dripping state, the temperature detected by the temperature sensing element 16 rises rapidly and eventually reaches the set temperature. When this detected temperature exceeds the set temperature, the power supply to the heater 6 is stopped.
The time measurement means 19 (corresponding to the timer in FIG. 2) starts measuring the time after the temperature exceeds the set temperature. In this state, there is almost no hot water being supplied from the discharge pipe 11', and the hot water that has been supplied so far is immersed in the coffee liquid and is gradually being stored in the glass container 12 from the liquid feeding port 14. "Waiting for extraction to end" Then, when the time after the set temperature has been exceeded reaches the set time, a drive signal is output to the alarm 22, and at the same time an "extraction end notification" is issued to notify that the extraction has ended, the time measurement means 19 is stopped.

(corresponding to T in FIG. 3) That is, in this embodiment, the discharge pipe 1
The delay caused by the soaking of the coffee liquid from the end of hot water supply in step 1' to the end of liquid feeding from the liquid feeding port 14 is resolved by providing a set time.

Although the above explanation does not clarify the relationship between the set temperature and the adjustment temperature in the conventional technology, it is appropriate if the set temperature ≦ the adjustment temperature, and when the two temperatures are different (Fig. 2), the relationship between the heater 6 may be turned off by adjusting the temperature. Further, in the above embodiment, the coffee boiler equipped with a mill mechanism has been described, but it goes without saying that the present invention can also be applied to a coffee boiler 2 without a mill mechanism.

Effects of the Invention As described above, according to the present invention, when the extraction of coffee liquid is finished, a notification is given by the alarm, so even if the user is in a hurry, the user does not have to check the state of dripping from the liquid feeding port. However, it is possible to easily know when the extraction of the coffee liquid has finished, and at the same time, the glass container can be removed at the appropriate time to drink high-quality coffee, which is an extremely excellent effect. It is.

[Brief explanation of drawings]

Fig. 1 is a block diagram of a coffee boiler showing an embodiment of the present invention, Fig. 2 is a flowchart for explaining the operation of the coffee boiler, Fig. 3 is a temperature characteristic curve diagram during heating, and Fig. 4 5 is a front view of a conventional coffee boiler, FIG. 5 is a longitudinal sectional view of the same coffee boiler, and FIG. 6 is a circuit diagram of the same coffee boiler. 5... Main body, 6... Data, 9... River...
Tank, 11... Water tube, 16... Temperature sensing element, 17... Heater energization control means, 18...
... Temperature setting means, 19 ... Time measurement means, 20 ... Extraction waiting time setting means, 21 ...
. . . Judgment means, 22. River… Alarm device, 23. . Mountain microprocessor. Name of agent: Patent attorney Toshio Nakao and 1 other person
1 Figure E-Ichiji Ichiyo L
J No. 2 Figure 5 - C 4th Figure 5 , -0

Claims (2)

[Claims] (1) A tank provided in the main body and containing water, a water pipe that guides the water in the tank, and a heater that heats the water;
A temperature sensing element that detects the temperature near the heater, a heater energization control means that controls energization of the heater, a drip mechanism that supplies hot water to coffee grounds and extracts coffee liquid, and sets a control temperature of the heater. a temperature setting means; a time measuring means for measuring the time after the temperature detected by the temperature sensing element exceeds the set temperature set by the temperature setting means;
An extraction waiting time setting means for setting an extraction waiting time after the set temperature is exceeded, and each output signal of the temperature sensing element, temperature setting means, time measuring means, and extraction waiting time setting means are input, and the detected temperature is A coffee boiler comprising: a determining means that determines that extraction has ended when the temperature exceeds a set temperature and an extraction waiting time has elapsed; and an alarm driven by the output of the determining means. (2) The coffee boiler according to claim 1, wherein the set temperature is set higher than the boiling temperature.