JP2884690B2 - Extractor - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an extractor such as a coffee maker.

2. Description of the Related Art In recent years, extractors such as coffee makers have become widespread,
There is a demand for improved usability.

A conventional extractor of this type generally has a configuration as shown in FIG. Hereinafter, the configuration will be described.

As shown in the figure, a heating element 2 is mounted on a lower peripheral portion of a container 1, and a temperature controller 3 is disposed outside a bottom surface. A container lid 4 is provided above the container 1 in a state of being sealed with the container 1. A tank 5 is provided above the container lid 4, a first opening 5 a is provided on the bottom of the tank 5, one end is attached to the first opening 5 a, and the other end is opened downward in the container 1. A water supply pipe 6 is provided, and the water supply pipe 6 is provided so as to penetrate through the second opening 4 a of the container lid 4. The third opening 4 b of the container lid 4 is provided so as to penetrate the air cylinder 7 that opens above the tank 5. The fourth opening 4c of the container lid 4 is provided as a through hole of the water guide pipe 8, and the water guide pipe 8 is bent at one end into a substantially U-shape with a water suction port 8a located above the inside of the container 1, and the other. A discharge port 8b is provided at the end. Below the discharge port 8b, a basket 9 for storing coffee powder and the like, and a basket 9
A decanter 10 for storing coffee liquid and the like is provided below the hopper. Above the tank 5, a lid 11 having a water supply port 11a for supplying water is provided.

The operation of the above configuration will be described. When water is supplied from the water supply port 11a, the water enters the container 1 through the water supply pipe 6 from the first opening 5a of the tank 5. When the water level in the container 1 rises and water is supplied above the water pipe 8, the water in the container 1 is drained from the discharge port 8 b through the water pipe 8.
When it is drained and the water level falls, it becomes the same as the water intake 8a,
Since air enters the container 1 at the same time by the air cylinder 7, air also enters the water pipe 8 from the water supply port 8a.
The principle of the siphon does not work in the water pipe 8 and the drainage stops. When electricity is passed through the heating element 2 in this state, the water in the container 1 is heated. When the water temperature rises and reaches the set temperature of the temperature controller 3, the temperature controller 3 operates to stop energizing the heating element 2. After this basket 9
When the coffee powder is set 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 through the water guide pipe 8, and is placed on the coffee powder in the basket 9. It is poured, and the coffee liquid drops on the decanter 10.

Problems to be Solved by the Invention In such a conventional extractor, it takes about 2 to 3 minutes to discharge hot water, and furthermore, it takes 1 to 2 minutes to complete the extraction by touching the coffee powder in the basket 9. It takes minutes. In addition, the only way to determine whether or not the coffee is being extracted is to check the dripping of the coffee liquid from the gap between the basket 9 and the decanter 10.
There were problems such as pulling out the basket 9 during extraction and spilling the coffee liquid during extraction and causing burns.

The present invention solves the above-described problems, and displays an extraction process highly correlated with coffee extraction, and accurately displays during coffee extraction even if the amount of coffee extracted or the temperature of water in the container changes. This is the first purpose. Also,
A second object is to detect the temperature near the upper surface of the hot water where the temperature of the hot water does not easily change, set an output reference temperature, and display an extraction process faithful to coffee extraction.

Means for Solving the Problems In order to achieve the first object, the present invention provides a container equipped with a heating element for heating water, a water guide pipe for supplying hot water heated from the container to an extraction device, A first temperature detecting element attached to the water pipe, a second temperature detecting element for detecting a temperature of hot water in the container, and an indicator light, and an output temperature of the first temperature detecting element is The first problem solving means is to turn on the indicator lamp when the temperature is higher than an output reference temperature set by a signal from the second temperature detecting element. Further, in order to achieve the second object, in addition to the first means for solving the above problems, a second temperature detecting element is provided in the container in the hot water and near the water surface. It is a means to solve the problem.

According to the first aspect of the present invention, when the hot water for extraction passes through the water pipe, the first temperature detecting element disposed in the water pipe rises, and the output of the second temperature detecting element is increased. When the temperature exceeds the output reference temperature set in the above, the temperature is output to the indicator via the temperature detection circuit, and the indicator is turned on. When the discharge of the hot water is completed and the temperature of the first temperature detecting element drops and becomes lower than the output reference temperature, the indicator light turns off. Further, according to the second problem-solving means, the second temperature detecting element for setting the output reference temperature is such that when the water for extraction is supplied into the container via the water supply pipe, the temperature of the hot water in the container is least reduced. Since it is arranged in the hot water and near the water surface, the change in the output reference temperature can be reduced.

Embodiment An embodiment of the present invention will be described below with reference to FIGS. The same components as those in the conventional example are denoted by the same reference numerals, and description thereof is omitted.

As shown in the figure, the first temperature detecting element 12 is mounted on the water guide pipe 8 and attached with a sealing material 13 made of rubber so that the element is located in the water guide pipe 8. The second temperature detecting element 14 measures the temperature of the hot water in the container 1, and is disposed near the surface of the hot water. The temperature detection circuit 15 receives the temperature of the second temperature detection element 14, sets an output reference temperature to the indicator light 16, and compares the output to the first temperature detection element 12 with the output to the indicator light 16. Controlling. When the temperature of the first temperature detecting element 12 is higher than the output reference temperature, the temperature detecting circuit 15 outputs to the indicating lamp 16 and the indicating lamp 16 is turned on. The indicator light 16 is provided at a position that can be checked from the outside of the machine. The lighting of the indicator light 16 continues while the first temperature detecting element 12 is higher than the output reference temperature, and when the temperature of the first temperature detecting element 12 decreases, the temperature detecting circuit 15 stops outputting to the indicating light 16, The indicator light 16 turns off. According to the experiment, the extraction is completed when the temperature of the first temperature detecting element 12 drops by about 20 ° C., so that the output reference temperature is set by the temperature detecting circuit 15 so as to reach this temperature.

The operation of the above configuration will be described with reference to FIG. When water is supplied from the water supply port 11a, the water enters the container 1 through the water supply pipe 6 from the first opening 5a of the tank 5. When the water level in the container 1 rises and water is supplied above the water pipe 8, the water in the container 1 is drained from the discharge port 8 b through the water pipe 8. Drained water level drops, water intake
At the same water level as 8a, since air is simultaneously flowing into the vessel 1 by the air cylinder 7, air also flows into the water pipe 8 from the water inlet 8a, and the siphon principle does not work in the water pipe 8. Drainage stops. When electricity is passed through the heating element 2 in this state, 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 controller 3, and the temperature controller 3 operates to stop energizing the heating element 2. Thereafter, the coffee powder is put into the basket 9 and set, and water is supplied again from the water supply port 11a. When the hot water in the container 1 is discharged through the water guide pipe 8,
Drained from 8b, poured onto the coffee powder in the basket 9, the coffee liquid drops onto the decanter 10. During this extraction, the first temperature detecting element 12 is disposed in the water pipe 8, so that when the extraction is started, the temperature rises, and the second temperature detecting element detecting the temperature in the container 1. Since the temperature becomes higher than the output reference temperature set in the step 14, the indicator lamp 16 is energized and the indicator lamp 16 is turned on in the temperature detection circuit 15. As the hot water passes through the water guide pipe 8, the temperature of the first temperature detecting element 12 gradually decreases, and the extraction of coffee is completed in the basket. When the temperature of the first temperature detecting element 12 drops below the output reference temperature, the temperature detecting circuit 15
The output to is stopped and the indicator light goes off. Therefore, the display during the extraction process can be performed by the display lamp 16.

Also, when water for extraction is put into the container 1, the temperature of the hot water in the container 1 drops rapidly at the lower part of the container 1, but only gradually at the upper part of the container 1. For this reason, the temperature of the second temperature detecting element 14 arranged on the upper portion of the container 1 does not decrease so much during the extraction of coffee, and therefore, the output reference temperature does not change much.
Therefore, an extraction process display faithful to coffee extraction can be performed.

According to the present invention, as is apparent from the above embodiments, the display is performed when the output temperature of the first temperature detection element is higher than the output reference temperature set by the signal from the second temperature detection element. Since the lamp is turned on, the extraction display time does not change with the boiling water temperature, and the end time of coffee extraction is determined by the time from the end of hot water discharge. , The temperature from the start to the end of coffee extraction can be accurately confirmed by turning on the indicator light regardless of the amount of coffee extraction. Further, since the second temperature detecting element detects the temperature in the vicinity of the upper surface of the hot water in which the temperature of the hot water is hard to change, the practical value is increased, for example, it is possible to obtain an extraction process display device faithful to coffee extraction. Things.

[Brief description of the drawings]

FIG. 1 is a sectional view of an extractor provided with an extraction step display device according to one embodiment of the present invention, FIG. 2 is a side sectional view of the extractor, and FIG.
FIG. 4 is a perspective view of the extractor, FIG. 4 is an electric circuit diagram of the extractor, and FIG. 5 is a temperature change of a first temperature detecting element and a second temperature detecting element of an extraction process display device of the extractor. Characteristic diagram,
FIG. 6 is a sectional view of a conventional extractor. 1 ... container, 2 ... heating element, 8 ... water pipe, 12 ...
A first temperature detecting element, 14... A second temperature detecting element, 15.
… Temperature detection circuit, 16 …… Indicator light.

──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Katsuaki Suzuki 1006 Kazuma Kadoma, Kadoma, Osaka Prefecture Inside Matsushita Electric Industrial Co., Ltd. (58) Field surveyed (Int. Cl. ⁶ , DB name) A47J 31/00- 31/60

Claims (2)

(57) [Claims] 1. A container provided with a heating element for heating water, a water pipe for supplying hot water heated from the container to an extraction device, a first temperature detecting element mounted on the water pipe, and the container. A second temperature detecting element for detecting the temperature of hot water in the inside, and an indicator light, wherein an output temperature of the first temperature detecting element is an output reference temperature set by a signal from the second temperature detecting element. An extractor that turns on the indicator light when it is higher than the above. 2. The extractor according to claim 1, wherein the second temperature detecting element is located near a water surface in the hot water of the container.