JP3106904B2 - Coffee extractor - 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 extractor for general household use.

[0002]

2. Description of the Related Art In recent years, coffee extractors have become the mainstays in which all processes leading to coffee extraction are fully automated by a control circuit.

FIG. 5 shows a conventional coffee extractor.
This will be described with reference to FIG. FIG. 5 is a side sectional view of a conventional coffee extractor. In FIG. 5, reference numeral 18 denotes a detachable water container, which forms a discharge port of a discharge pipe A19 at the inlet, and connects to the outlet to form a thermistor 20 and a water guide pipe 21. The water pipe 21 is a water pipe 22
The water pipe 22 is covered with an aluminum heat conductor and is bitten together with the sheath heater 23. The water pipe 22 is connected to a circulation pipe 24 and further to an electromagnetic switching valve 25. The electromagnetic switching valve 25 has a discharge pipe A19 and a discharge pipe B26 as switching water passages.
A discharge port is formed inside. This shower dome opening and closing room 27
Is mounted with a microswitch 28 and connected to a mill chamber 29. This mill chamber 29 has a bean cutter 30,
It is connected to the filtration chamber 31. This filtration chamber 31 is connected to a coffee storage container 32. Reference numeral 33 denotes a control circuit formed to control the operation of the coffee brewer.

The operation of the coffee extractor configured as described above will be described below. First, water container 1
8 is passed through a water guide pipe 21 and further passed through a water flow pipe 22 that has received heat conduction by energizing a sheath heater 23, whereby the water is heated, passes through a circulation pipe 24, and passes through an electromagnetic switching valve. Discharge pipe A without operating 25
The heated water is discharged to the 19 side and circulated to the water container 18. After the above operation is repeated, when the thermistor 20 reaches the set temperature, the control circuit 33 operates the electromagnetic switching valve 25 to switch the valve to the discharge pipe B26 side, and the heated water flows into the shower dome opening / closing chamber 27, the mill chamber 29. And filtration chamber 3
1 to extract coffee into the coffee storage container 32. At this time, if the shower dome opening / closing chamber 27 is accidentally opened, the micro switch 28 is operated, and the control circuit 33 operates the electromagnetic switching valve 25 to circulate to the water container 18 side. Do not work safely.

[0005] In addition, the coffee beans previously introduced into the mill chamber 29 are ground by the bean cutter 30, so that the fine powder of the beans adheres to the shower dome opening / closing chamber 27, the mill chamber 29 and the bean cutter 30. When the heated water is guided to the discharge pipe B26 side, the control circuit 33 operates and the bean fine powder adhering to these portions flows down to the filtration chamber 31 by rotating the bean cutter 30 for a set time to be cleaned. Will be cleaned.

[0006]

However, in the conventional configuration, the set temperature must be detected by the thermistor 20, and the electromagnetic switching valve 25 must be switched. Further, the shower dome opening / closing chamber 27, the mill chamber 29, and the bean cutter 30 must be detected. The bean fine powder adhering to the filter is cleaned with heated water, and the bean cutter 30
Must be rotated for a set time, and a complicated and expensive control circuit 33 must be configured. Further, if the shower dome opening / closing chamber 27 is erroneously opened while the heated water is being guided to the discharge pipe B26 side, the microswitch 28 is operated, the control circuit 33 operates the electromagnetic switching valve 25, and As long as the flow path is switched to the container 18 side and the shower dome opening / closing chamber 27 is open, coffee is not extracted, and even if the shower dome opening / closing chamber 27 is closed, a switch must be pressed to return to the original state. Had the problem of having to do so.

The present invention solves the above-mentioned conventional problems, and does not use a complicated and expensive control circuit, has the same effect in switching and cleaning the flow path, and opens the shower dome opening / closing chamber. However, it is an object of the present invention to provide a coffee extractor having excellent functions that can extract coffee as it is without heating water being applied to the user, and that is inexpensive, simple, and has excellent functions.

[0008]

In order to achieve the above object, the present invention provides a water container, a heating element for guiding water in the water container to a water pipe, and heating the heated water. Or a flow path switching valve for switching to the shower dome opening / closing chamber and the mill chamber, and a discharge pipe A and a discharge pipe B connected to the flow path switching valve. A flowing water path having a discharge pipe C disposed in a chamber and a discharge pipe D disposed in a mill chamber, and a shape memory spring for operating the flow path switching valve are disposed.

Further, a flow path switching valve and a shape memory spring for operating the flow path switching valve are disposed between the water container and the heating element.

The discharge pipe C is provided with a flow-blocking safety shaft A and a flow-blocking safety shaft B, and the heated water is switched to the discharge pipe B by a flow switching valve. The heated water flows from the discharge pipe C when rotated in the vertical direction about the axis of the shutoff safety axis A and the flow path shutoff safety axis B and opened at an angle of n ° (1 ° to 45 °) or more. The path is interrupted, and the heated water having the discharge pipe B as a flow path is guided only to the discharged discharge pipe D and discharged to the mill chamber.

[0011]

According to the present invention, the water in the water container first passes through the shape memory spring, and the water heated by the heating element circulates through the discharge pipe A to the water container. Repeat this,
When the temperature of the heated water passing through the shape memory spring reaches the operating temperature of the shape memory spring, the shape memory spring extends to a certain length, so that the flow path switching valve linked to the shape memory spring discharges. The valve of the pipe A is closed, and the valve of the discharge pipe B is opened to switch the flow path. Further, when the flow path is switched to the discharge pipe B side, the heated water is discharged from the discharge pipe C and the discharge pipe D, and the shower dome opening / closing chamber is opened first, and predetermined beans are put into the mill chamber. By crushing the beans with a mill cutter, the shower dome opening / closing room, the mill room, and the bean cutter to which the fine powder of beans has adhered are cleanly cleaned. Extracted into container.

Further, even if the user accidentally opens the shower dome opening / closing chamber after the flow path is switched to the discharge pipe B side, the flow path safety shaft A connected to the discharge pipe C and the flow path safety The axes B operate so as to completely block the flow path from each other. Thereby, even if the shower dome opening / closing chamber is left open, the heated water is discharged from the discharge pipe D safely without the heated water being scattered, and the coffee extraction is continued without interruption. be able to.

[0013]

【Example】

(Embodiment 1) A coffee extractor according to a first embodiment of the present invention will be described below with reference to FIG.

In FIG. 1, 1 is a water container, 2 is a shape memory spring disposed in the middle of a flowing water path, and 3 is a shape memory spring 2
, A discharge pipe A, a discharge pipe B, a discharge pipe B, a discharge pipe C branching from a discharge pipe B5, and disposed in a shower dome opening / closing chamber 8; The discharge pipes D and 9 branched and disposed in the mill chamber 10 are beans cutters disposed in the mill chamber 10 and 11.
Is a filtration chamber, 12 is a coffee storage container, 13 is a heating body, 14
Is a water passage pipe bitten by the heating element 13 and the aluminum conductor.

The operation of the coffee extractor configured as described above will be described with reference to FIG. First, the water in the water container 1 passes through the shape memory spring 2, and the water heated by the heating body 13 circulates through the discharge pipe A4 to the water container 1. This is repeated, and when the temperature of the heated water passing through the shape memory spring 2 reaches the operating temperature of the shape memory spring 2, the shape memory spring 2 extends to a certain length. The flow path switching valve 3 linked to the discharge pipe A
The valve of No. 4 is closed and the valve of the discharge pipe B5 is opened to switch the flow path. Further, by switching the flow path to the discharge pipe B5 side, the heated water is discharged from the discharge pipe C6 and the discharge pipe D7, and the shower dome opening / closing chamber 8 is opened first, and predetermined beans are placed in the mill chamber 10. Then, the beans were pulverized by a mill cutter 9 to clean the shower dome opening / closing chamber 8 and the mill chamber 10 and the bean cutter 9 to which the fine powder of beans adhered, and pulverized and stored in the filtration chamber 11. The coffee is extracted and extracted into the coffee container 12.

As described above, the coffee extractor according to the present embodiment is provided with the flow path switching valve 3 utilizing the shape memory spring 2 without using a complicated and expensive control circuit, and with the discharge pipe C6 and the discharge pipe C6. By providing the discharge pipe D7, it is possible to have simple and excellent functions while being inexpensive.

(Embodiment 2) A coffee extractor according to a second embodiment of the present invention will be described below with reference to FIG. The same components as those described in the first embodiment are denoted by the same reference numerals, and description thereof is omitted.

In FIG. 2, the point different from the first embodiment is that a shape memory spring 2 and a flow path switching valve 3 interlocked with the shape memory spring 2 are disposed between the water container 1 and the heating body 13.

The operation of the coffee extractor constructed as described above is the same as that of the first embodiment, except that the water container 1
Since the shape memory spring 2 is not provided in the water container 1,
Can be easily attached and detached, water can be easily poured into the water container 1, and dirt such as scale can be easily removed.

(Embodiment 3) A coffee extractor according to a third embodiment of the present invention will be described below with reference to FIGS. The same components as those described in the first and second embodiments are denoted by the same reference numerals, and description thereof will be omitted.

In FIG. 3, 15 is connected to the discharge pipe C6, and the fixed flow-blocking safety axes A and 16 are connected to the discharge pipe C6 and are rotatable in the vertical direction. O-ring.

The operation of the coffee extractor configured as described above will be described with reference to FIG. FIG. 4 (a)
FIG. 4B is a cross-sectional view of the flow-path shut-off safety axis B, FIG. 4C is a cross-sectional view of the flow-path cut-off safety axis B, and FIG. 2 shows a cross section of a plane. The flow passage blocking safety shaft A15 and the flow passage blocking safety shaft B16 abut each other around the center of the circle, and when the shower dome opening / closing chamber 8 is closed, the surfaces that abut each other are as shown in FIG. In such a state, heated water enters from an open portion not surrounded by oblique lines and is discharged into the shower dome opening / closing chamber 8. Therefore, in the relationship between the two where the open portion exists by n ° (1 to 45 °), when the shower dome opening / closing chamber 8 rotates in the vertical direction about the flow path blocking safety axis B16 at an angle of n ° or more, the The road-blocking safety axis B16 also rotates in conjunction with it, and operates to completely block the opening. Accordingly, even if the user accidentally opens the shower dome opening / closing chamber 8 after the flow path is switched to the discharge pipe B5 side, the discharge to the discharge pipe C6 is completely shut off, and the heated water is scattered. Thus, the heated water is safely discharged from the discharge pipe D7, and the extraction can be continuously performed without interrupting the extraction of the coffee.

[0023]

As is apparent from the above description, the present invention provides a flow path switching valve using a shape memory spring, thereby eliminating the need for a complicated and expensive control circuit, and providing a shape memory spring. By disposing a flow path switching valve using a liquid container between the water container and the heating element, a detachable water container is provided, its simplicity is enhanced, and the discharge pipe C and the discharge pipe D are disposed. Further, by disposing the flow-path-blocking safety axis A and the flow-path-blocking safety axis B connected to the discharge pipe C, it is possible to realize a coffee extractor which is inexpensive, simple and has excellent functions.

[Brief description of the drawings]

FIG. 1 is a schematic side sectional view of a coffee extractor according to a first embodiment of the present invention.

FIG. 2 is a schematic side sectional view of a coffee extractor according to a second embodiment of the present invention.

FIG. 3 is a schematic side sectional view of a coffee extractor according to a third embodiment of the present invention.

FIG. 4A is a cross-sectional view of a flow path shutoff safety axis A according to a third embodiment of the present invention. FIG. 4B is a cross-sectional view of a flow path shutoff safety axis B according to a third embodiment of the present invention. () Is a cross-sectional view in which surfaces that come into contact with each other in the third embodiment of the present invention are combined

FIG. 5 is a schematic side sectional view of a conventional coffee extractor.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Water container 2 Shape memory spring 3 Flow path switching valve 4 Discharge pipe A 5 Discharge pipe B 6 Discharge pipe C 7 Discharge pipe D 8 Shower dome opening / closing room 10 Mill room 13 Heating body 14 Water flow pipe 15 Flow path cutoff safety axis A 16 Flow path shutoff safety axis B

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int. Cl. ⁷ , DB name) A47J 31/00-31/42

Claims (3)

(57) [Claims] 1. A water container, a heating element for guiding water in the water container to a water pipe and heating the same, and a flow passage for switching and guiding the heated water to the water container or the shower dome opening / closing room and the mill room. It has a switching valve, a discharge pipe A and a discharge pipe B connected to the flow path switching valve, and further branches off from the discharge pipe B and is disposed in a discharge pipe C and a mill chamber disposed in a shower dome opening / closing chamber. A coffee extractor provided with a flowing water path having a discharge pipe D and a shape memory spring for operating the flow path switching valve. 2. The coffee extractor according to claim 1, wherein a flow path switching valve and a shape memory spring for operating the flow path switching valve are disposed between the water container and the heating element. 3. The discharge pipe C has a flow-path safety axis A and a flow-path safety axis B, and the heated water is switched to the discharge pipe B by a flow path switching valve. The heated water flows from the discharge pipe C when it rotates vertically about the axis of the shutoff safety axis A and the flow path shutoff safety axis B and is opened at an angle of n ° (1 ° to 45 °) or more. 2. The coffee extractor according to claim 1, wherein the flow path is blocked, and the heated water flowing through the discharge pipe B is guided only to the discharge pipe D and discharged to the mill chamber.