JPH03212237A - Extraction process displaying device of extractor - 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 Field of the Invention The present invention relates to a brewing process display device for a brewing machine such as a coffee maker.

BACKGROUND OF THE INVENTION In recent years, brewing machines such as coffee makers have become widespread and are used more frequently by users.

Conventionally, this type of extractor generally had a configuration as shown in FIG. The configuration will be explained below.

In FIG. 5, a heating element 2 is attached to the lower private part of the container 1, and a temperature regulator 3 is disposed outside the bottom surface. container 1
A container lid 4 is provided above the container 1 in a sealed state. A tank 5 is provided above the container lid 4, an opening 5a is provided in the bottom of the tank 5, one end of the water supply vibro is connected to this opening 5a, and the other end of the water supply vibro is connected to the first end of the container lid 4. It is disposed so as to penetrate through the opening 4a and open downward into the container 1. The second opening 4b of the container lid 4 is provided to penetrate an air cylinder 7 that opens above the tank 5. The third opening 4C of the container lid 4 is provided as a through hole for a water guide pipe 8, and the water guide pipe 8 has one end bent into a substantially U-shape with a water intake port 8a located above the container 1. A discharge port 8b is provided at the other end. A basket 9 for storing coffee powder and the like is provided below the discharge port 8b, and a decanter 10 for storing coffee liquid and the like below the basket 9. Above the tank 5 is a water supply port 1 for filling water.
A lid 11 provided with a cap 1a is provided.

The operation in the above configuration will be explained. When water is poured from the water supply port 11a, the water enters the container 1 from the opening 5a of the tank 5 via the water supply vibro. When the water level in the container 1 rises and water is continuously supplied to the upper part of the water guide pipe 8, the water in the container 1 is drained from the discharge port 8b through the water guide pipe 8. When the water is drained and the water level drops to the same level as the water intake port 8a, air is simultaneously entering the container 1 from the air cylinder 7, so air also enters the water guide pipe 8 from the water intake port 8a, and the water guide pipe 8, the siphon principle no longer works, and drainage stops. In this state, when electricity is passed through the heating element 2 to heat it, the water in the container 1 is heated. When the water temperature rises to the set temperature of the temperature regulator 3, the temperature regulator 3 operates to stop supplying electricity to the heating element 2. After this basket 9
When coffee powder is placed in the container and water is supplied again from the water supply port 11a, the heated hot water in the container 1 is discharged from the discharge port 8b via the water guide pipe 8 and poured onto the coffee powder in the basket 9. The coffee liquid drips into the decanter 10.

Problems to be Solved by the Invention In such a conventional extraction machine, it takes about 3 minutes to discharge the hot water, and it takes another 1 to 2 minutes for the hot water to come into contact with the coffee powder in the basket 9 and complete the extraction. It takes time. Moreover, the only way to tell whether or not coffee is brewing is to check if the coffee liquid is dripping from the gap between the basket 9 and the decanter 10. This caused problems such as spillage and burns.

The present invention solves the above-mentioned conventional problems, and includes:
The primary purpose is to turn on an indicator light to indicate that extraction is in progress, so that it can be visually confirmed from the outside. A second purpose is to improve temperature detection accuracy and reliability.

Means for Solving the Problems In order to achieve the first object, the present invention provides a container equipped with a heating element that heats water, and a water guide pipe that supplies hot water from the container to a basket storing coffee grounds and the like. and,
It is equipped with an extractor having a decanter for storing coffee liquid, etc., and consists of a temperature detection element attached to a water pipe, a temperature detection circuit that operates based on the output of the temperature detection element, and an indicator light. The first means for solving the problem is to display the extraction process by lighting the indicator light. Moreover, in order to achieve the second object, the second problem-solving means is that the temperature detection element is provided in the water guide pipe near the discharge port provided on the basket side.

Effect of the present invention is based on the above-mentioned first means for solving the problem.When water is boiled and coffee is to be extracted, coffee powder is set in the basket, and then water is poured into the container again.
Hot water in the container is supplied to the basket via a water pipe. At this time, since the temperature detection element is attached to the water pipe, the temperature rises as the hot water passes through and sends a signal to the temperature detection circuit. The temperature detection circuit makes a judgment based on comparison with a reference value and outputs the result to the indicator light. By setting this reference value to approximately the same value as the signal value of the temperature detection element when extraction is completed, a signal is sent to the indicator light from the amount temperature detection circuit to indicate the completion of extraction from the start of discharging hot water, and the indicator lamp lights up. I can do it.

In addition, with the second problem-solving means, the temperature detection element is installed in the water guide pipe near the outlet provided on the basket side, so it quickly responds to the temperature of the hot water passing through the water guide pipe, and has the greatest effect on extraction. Since the temperature of hot water is detected, there is no detection error and the temperature detection accuracy can be improved.

EXAMPLE Hereinafter, an example of the present invention will be described with reference to FIGS. 1 to 4. Note that components having the same configuration as those of the conventional example are given the same reference numerals, and description thereof will be omitted.

As shown in FIG. 1, the temperature detection element 12 is located near the discharge port 8a of the water guide pipe 8, and as shown in FIG. It is installed with 14.

The temperature detection circuit 15 receives the output of the temperature detection element 12, compares it with a set reference value, and determines that if the voltage at point A in FIG. 3 is higher than the reference value (if the temperature of the temperature detection element 12 is high), The output of the comparator 16 becomes low level and the indicator light 17 lights up. This indicator light 17 is arranged at a position where it can be seen from the outside of the aircraft. The indicator light 17 continues to be lit while the temperature of the temperature detection element 12 is high, and when the temperature of the temperature detection element 12 decreases, the voltage at point A becomes lower than the reference value, and the output of the comparator 16 becomes high level, turning off the indicator light. 17 goes out.

According to experimental results, extraction is completed when the temperature of the temperature detection element 12 reaches approximately 70°C, so the output of the temperature detection element 12 at this temperature is used as the reference value. Further, the time it takes for the temperature detection element 12 to reach this temperature when extraction is started is about 4 to 5 seconds.

The operation in the above configuration will be explained. When water is poured from the water supply port 11a, the water enters the container 1 from the opening 5a of the tank 5 via the water supply vibro. When the water level in the container 1 rises and the water is supplied above the water guide pipe 8, the water in the container 1 is drained through the water guide pipe 8 from the discharge port 8b. When the water is drained and the water level drops to the same level as the water intake port 8a, air is simultaneously entering the container 1 from the air cylinder 7, so air also enters the water guide pipe 8 from the water intake port 8a, and the water guide pipe 8, the siphon principle no longer works and drainage stops. In this state, when electricity is passed through the heating element 2 to heat it, the water in the container 1 is heated. When the water temperature rises to about 95° C., it reaches the set temperature of the temperature regulator 3, and the temperature regulator 3 operates to stop supplying electricity to the heating element 2. After that, coffee powder is placed in the basket 9 and water is supplied again from the water supply port 11a, and the heated hot water in the container 1 is discharged from the discharge port 8b via the water guide pipe 8.
poured over coffee grounds in basket 9 and placed in carafe 10
Coffee liquid drips. During this extraction, temperature detection element 1
2 is installed in the water guide pipe 8, so when extraction starts, the temperature rises as shown in Figure 4, and the temperature detection circuit 1
The temperature becomes higher than the reference value of No. 5, and the temperature detection circuit 15 compares it with the reference value and outputs the result to the indicator light 17, which turns on. When the extraction is completed, the temperature of the temperature detection element 12 decreases, and the temperature detection circuit 15 turns off the indicator light 17. Therefore, the extraction process can be indicated by the indicator light 15.

Note that the indicator light 15 during the extraction process is not only lit continuously;
It may be lit blinking.

As described above, according to the extraction process display device for the extractor according to the embodiment of the present invention, the temperature detection circuit 15 can be made to blink based on the temperature change of the temperature detection element 12 disposed in the water guide pipe 8 during extraction. , the extraction process can be displayed. Moreover, by arranging the temperature detection element 12 near the discharge port 8b of the water guide pipe 8, temperature detection accuracy is high and reliability can be improved.

Effects of the Invention As is clear from the above embodiments, according to the first invention, the indicator light can be blinked via the temperature detection circuit in accordance with the temperature change of the temperature detection element installed in the water guide pipe during extraction. I can do it. By setting the reference value of the temperature detection circuit to the temperature of the temperature detection element when extraction is completed, the temperature from the start of hot water discharge to the completion of coffee extraction is
Since the indicator light can be turned on and it can be visually confirmed from the outside, the basket or decanter is safe without being pulled out by mistake, and can be supplied at low cost with a simple configuration. Further, according to the second invention, since the temperature detection element is disposed near the discharge port of the water guide pipe, it is possible to obtain a highly reliable extraction process display device for an extractor with high temperature detection accuracy. This is a practical value for extinguishing fires.

[Brief explanation of drawings]

Fig. 1 is a longitudinal sectional view of an extractor equipped with an extraction process display device of the present invention, Fig. 2 is an enlarged sectional view of the same main part, Fig. 3 is an electric circuit diagram of the same, and Fig. 4 is a diagram of the same temperature detection element. A characteristic diagram showing temperature changes, FIG. 5 is a vertical cross-sectional view of a conventional extractor. 1... Container, 2... Heating element, 8...
...Water flow Eve, 9...Basket, 10
... Decanter, 12 ... Temperature detection element, 15 ... Temperature detection circuit, 17 ... Indicator light.

Claims (2)

[Claims] (1) Equipped with an extractor that has a container equipped with a heating element that heats water, a water guide pipe that supplies hot water from the container to a basket that stores coffee grounds, etc., and a decanter that stores coffee liquid, etc., and has a water guide pipe. The extractor comprises a temperature detection element attached to the temperature detection element, a temperature detection circuit operated by the output of the temperature detection element, and an indicator light, and the indicator light is lit by the output of the temperature detection circuit to indicate the extraction process. Extraction process display device for the extraction machine. (2) The extraction process display device for an extractor according to claim 1, wherein the temperature detection element is provided in a water guide pipe near the discharge port provided on the basket side.