JPH03297424A - Extraction process display device for extractor - Google Patents

Abstract

PURPOSE:To arrange that extraction display time does not change with boiling temperature and can be accurately confirmed by the lighting of a display light by switching on and off the display light through a temperature detection circuit operating by means of the outputs of a first temperature detection element provided within a water introduction pipe and a second temperature detection element provided in a container. CONSTITUTION:A first temperature detection element 12 is installed in a water introduction pipe 8, and fixed by means of a seal material 3 formed out of rubber. The second temperature detection element 14 whose purpose is to measure the hot water temperature inside a container 1, is provided in the vicinity of the surface of the hot water. A temperature detection circuit 15 receives the temperature of the second temperature detection element 14, and sets an output reference temperature to a display light 16, and at the same time compares it with the first element 12 temperature, and controls output to the display light 16. When the first element 12 temperature is higher than the output reference temperature, the circuit 15 conducts output to the light 16 and is lighted. The lighting of the light 16 continues as long as the first element 12 temperature is higher than the output reference temperature, and when the temperature lowers, the circuit 15 stops output to the light 16, and the light 16 goes out.

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 widely used, and there is a demand for improved usability.

Conventional extractors of this type generally have a configuration as shown in FIG. The configuration will be explained below.

As shown in the figure, a heating element 2 is attached to the lower periphery of the container 1, and a temperature regulator 3 is provided 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, a first opening 5a is provided at the bottom of the tank 5, one end is attached to the first opening 5a, and the other end is opened downward into the container 1. A water supply vibro is provided, and this water supply vibro is disposed so as to penetrate through the second opening 4a of the container lid 4. 3rd part of container lid 4
The opening 4b is provided so as to penetrate through the air cylinder 7 which opens above the tank 5. The fourth 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 end. Discharge port 8b
A basket 9 for storing coffee powder and the like and a decanter 10 for storing coffee liquid and the like are arranged below the basket 9. A lid 11 is provided above the tank 5 and has a water supply port 11a for putting water therein.

The operation in the above configuration will be explained. When water is poured from the water supply port 11a, water flows into the container 1 from the first opening 5a of the tank 5 via the water supply vibro. When the water level in the container 1 rises and water is supplied above the water guide pipe 8, the container 1
The water inside is drained from the discharge port 8b through the water guide vibrator 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 through the air cylinder 7, so air also enters the water guide vibrator 8 from the water intake port 8a, and the water guide pipe 8, the siphon principle no longer works and the water drains or 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, put coffee powder in the basket 9 and set it, and then
When water is supplied again, the heated hot water in container 1 becomes
The water is discharged from the discharge port 8b through the water guide pipe 8, poured onto the coffee powder in the basket 9, and dripped into the decanter 10.

Problems to be Solved by the Invention In such a conventional extraction machine, it takes about 2 to 3 minutes to discharge the hot water, and it takes another 1 to 2 minutes for the hot water to come in contact with the coffee powder in the basket 9 to complete the extraction. Minutes of time is required. Moreover, the only way to tell whether brewing is in progress is to check for coffee liquid dripping from the gap between the basket 9 and decanter 10, and it is difficult to see.
There were problems such as spilling the coffee liquid being extracted and causing burns if the basket 9 was pulled out during extraction.

The present invention solves the above-mentioned problems by displaying the extraction process that is highly correlated with coffee extraction, and in addition, even if the amount of coffee extracted or the temperature of the water boiling in the container changes, it is possible to accurately display the coffee extraction process. This is the first purpose. A second purpose is to detect the temperature near the top of the hot water, where the temperature of the hot water is less likely to change, to set the output reference temperature, and to display the extraction process faithfully to coffee extraction.

Means for Solving the Problems In order to achieve the first object, the present invention includes a container equipped with a heating element that heats water, a water guide pipe that supplies heated hot water from the container to an extraction device, A first temperature detection element attached to the water guide pipe, a second temperature detection element that detects the temperature of the water in the container, and operates based on the outputs of the first temperature detection element and the second temperature detection element. The apparatus includes a temperature detection circuit and an indicator light that blinks depending on the output of the temperature detection circuit, and the second temperature detection element sets an output reference temperature of the temperature detection circuit, and the indicator light indicates the extraction process. This is the first means of solving the problem. Furthermore, in order to achieve the second object, in addition to the first problem-solving means, a second temperature detection element is provided in which the second temperature detection element is located in the intestine of the container and near the water surface. It is used as a means of solving problems.

Operation The present invention has the first problem-solving means described above. When hot water for extraction passes through the water guide pipe, the temperature of the first temperature detection element disposed inside the water guide vibe rises, and the output of the second temperature detection element increases. When the output reference temperature set in is exceeded, the output is sent to the indicator light via the temperature detection circuit and the indicator light turns on. When the discharge of hot water is finished and the temperature of the first temperature detection element decreases and becomes lower than the output reference temperature, the indicator light is turned off. In addition, according to the second problem solving means, when the second temperature detection element for setting the output reference temperature is supplied into the container via the water supply vibrator, the second temperature detection element that sets the output reference temperature detects whether the water temperature in the container has decreased or not. It is located in the intestine of the water tank and near the water surface, making it possible to minimize changes in the output reference temperature.

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

As shown in the figure, the first temperature detection element 12 is attached to the water guide pipe 8, and is attached with a sealing material 13 made of rubber so that the element is located inside the water guide pipe 8. The second temperature detection element 14 measures the temperature of the water in the container 1, and is disposed near the surface of the hot water. The temperature detection circuit 15 is the second
receives the temperature of the first temperature detection element 14, sets the output reference temperature to the indicator light 16, and sets the temperature of the first temperature detection element 12.
The output to the indicator light 16 is controlled by comparing the temperature with the temperature.

When the temperature of the first temperature detection element 12 is higher than the output reference temperature, the temperature detection circuit 15 outputs an output to the indicator light 16, and the indicator light 16 lights up. This indicator light 16 is arranged at a position where it can be seen from the outside of the aircraft. The lighting of the indicator light 16 continues while the temperature of the first temperature detection element 12 is higher than the output reference temperature, and when the temperature of the first temperature detection element 12 decreases, the temperature detection circuit 15 stops outputting to the indicator light 16. The indicator light 16 goes out. According to experiments, extraction is completed when the temperature of the first temperature detecting element 12 drops by about 20° C., so the output reference temperature is set in the temperature detecting circuit 15 to reach this temperature.

The operation of the above configuration will be explained with reference to FIG. When water is poured from the water supply port 11a, water flows into the container 1 from the first 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 vibrator 8, the water in the container 1 is drained through the water guide vibrator 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., the temperature 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 vibrator 8, and the hot water in the basket 9 is The coffee liquid is poured onto the coffee grounds and dripped into the decanter 10. Since the temperature detection element 12 of this brewing box 1 is placed inside the water guide vibrator 8, the temperature rises when extraction starts, and the second temperature detection element detects the temperature inside the container 1. 1
Since the temperature is higher than the output reference temperature set in step 4, the temperature detection circuit 15 energizes the indicator lamp 16 and turns on the indicator lamp 16. As the hot water passes through the water guiding vibrator 8, the temperature of the first temperature detecting element 12 gradually decreases, and the extraction of coffee in the basket 9 is completed. When the temperature of the first temperature detection element 12 falls below the output reference temperature, the temperature detection circuit 15 stops outputting to the indicator lamp 16, and the indicator lamp turns off. Therefore, the indicator light 16 can indicate that the extraction process is in progress.

Furthermore, when water for extraction is poured into the container 1, the temperature of the water in the container 1 drops rapidly in the lower part of the container 1, but only gradually in the upper part of the container 1. For this reason, the temperature of the second temperature detection element 14 disposed at the top of the container 1 does not drop much during coffee extraction, and therefore the output reference temperature changes only slightly.

Therefore, it is possible to display the extraction process faithfully to the coffee extraction process.

Effects of the Invention As is clear from the above embodiments, the present invention operates based on the outputs of the first temperature detection element placed in the water guide pipe during extraction and the second temperature detection element placed in the container. The indicator light blinks through the temperature detection circuit, and the second temperature detection element sets the output reference temperature of the temperature detection circuit, so the brewing display time does not change depending on the boiling temperature, and the coffee extraction time remains constant. The end time is determined by the time from the end of hot water dispensing, but since the first temperature detection element detects the temperature drop from the end of hot water dispensing, the time from the start of coffee extraction to the end of extraction is determined regardless of the amount of coffee extracted. This can be confirmed accurately by the lighting of the indicator light.

In addition, since the second temperature detection element detects the temperature near the top of the hot water, where the temperature of the hot water does not easily change, I think it is possible to obtain an extraction process display device that is faithful to coffee extraction.
It has great practical value.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of an extractor equipped with an extraction process display device according to an embodiment of the present invention, FIG. 2 is a side sectional view of the same extractor, and FIG.
The figure is a perspective view of the extractor, Figure 4 is an electric circuit diagram of the extractor, and Figure 5 is temperature changes of the first temperature detection element and second temperature detection element of the extraction process display device of the extractor. The characteristic diagram, FIG. 6, is a sectional view of a conventional extractor. 1... Container, 2... Heating element, 8...
...Water guiding vibrator, 12...First temperature detection element, 14...Second temperature detection element, 15...
...Temperature detection circuit, 16...Indicator light.

Claims (2)

[Claims] (1) A container equipped with a heating element that heats water, and a water guide pipe that supplies heated hot water from the container to an extraction device;
A first temperature detection element attached to the water guide pipe, a second temperature detection element that detects the temperature of the water in the container, and operates based on the outputs of the first temperature detection element and the second temperature detection element. The method includes a temperature detection circuit and an indicator light that blinks depending on the output of the temperature detection circuit, and the second temperature detection element sets an output reference temperature of the temperature detection circuit, and the indicator light indicates the extraction process. Extraction process display device for the extractor. (2) The extraction process display device for an extractor according to claim 1, wherein the second temperature detection element is located within the hot water of the container and near the water surface.