JPH119459A - Coffee extracting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily remove the coffee liquid penetrated into an annular groove by forming an annular stepped part extended to the inner edge on the contact surface with one end of an extractor body of a filter support, fitting an annular seal member to the outer edge part of the stepped part, and placing an annular member on the inner edge part in contact with the seal member. SOLUTION: A paper filter (filter) 6 is put on a filter support (support) 2, the support 2 is pressed to one end 1a of an extractor body (body) 1, and the one end 1a is pressed onto an O-ring 4 together with the filter 6 to seal the nipping part of the filter 6. After extraction of coffee, the filter 6 and the support 2 are separated from the body 1, and the filter 6 having the coffee grounds placed thereon is moved and disposed. At this time, an annular groove is formed by an annular stepped part 2a extended to the inner edge which is formed on the contact surface with the one end 1a of the body 1 of the support 2 and an annular member 5 placed on the inner edge part of the stepped part 2a, and the O-ring 4 is fitted to this groove. Since this groove is extinguished by removing the annular member 5 and the O-ring 4, however, the coffee liquid can be easily removed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coffee brewing apparatus.

[0002]

2. Description of the Related Art As shown in FIG.
An annular filter support that abuts one end of the extractor body,
A coffee extraction device having a plate-shaped filter fitted to the filter support, an annular groove formed in a contact surface of the filter support with one end of the extractor body, and an O-ring removably fitted in the annular groove. Conventionally known. In the apparatus of FIG. 4, the extractor main body is closed by an on-off valve movable within the extractor main body, and hot water and coffee beans in the extractor main body are supplied from an air pump placed outside the extractor main body through an air nozzle. Pressurized air is supplied to the powder mixture to make the mixture flow, and a pressurized state is created in the main body of the extractor to extract the coffee liquid. By pressing the O-ring against one end of the extractor main body, it is possible to prevent a situation in which the coffee liquid leaks from a contact portion between the extractor main body and the filter support.

[0003]

The conventional coffee brewing apparatus shown in FIG. 4 has a problem that it is difficult to remove the coffee brewing liquid permeated into the annular groove for storing the O-ring formed on the filter support. The present invention has been made in view of the above problems, and has an extractor main body, an annular filter support abutting on one end of the extractor main body, and a plate filter fitted to the filter support. An annular groove is formed in a contact surface with one end of the machine body, and a coffee extracting device in which a seal member is detachably fitted in the annular groove, wherein a coffee extract penetrating into the annular groove can be easily removed. It is an object to provide a coffee brewing device.

[0004]

In order to solve the above-mentioned problems, the present invention provides an extractor main body, an annular filter support abutting on one end of the extractor main body, and a plate-shaped fitting fitted to the filter support. An annular step portion reaching an inner edge is formed on a contact surface of the filter support with one end of the extractor main body, and an annular seal member is detachably fitted to an outer edge portion of the annular step portion; There is provided a coffee brewing apparatus characterized in that an annular member is placed in contact with an annular seal member at an inner edge of a step. In the coffee extraction device according to the present invention, an annular step portion reaching an inner edge formed on an abutment surface with one end of the extractor body of the annular filter support,
With an annular member placed on the inner edge of the annular step,
An annular groove for accommodating the annular seal member is formed, and the annular seal member fits into the annular groove. When the annular member and the annular seal member are removed, the annular groove disappears, leaving an annular step extending to the inner edge formed on the filter support. By washing the removed annular member, the annular seal member, and the annular step portion of the filter support, it is possible to easily remove the coffee liquid that has permeated the annular groove that houses the annular seal member.

In a preferred aspect of the present invention, a second annular step is formed at an inner edge of the annular step, and the annular member is detachably fitted to the second annular step. By forming a second annular step at the inner edge of the annular step and detachably fitting the annular member to the second annular step, positioning when attaching the annular member to the filter support can be achieved. It will be easier.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A coffee brewing apparatus according to a first embodiment of the present invention will be described with reference to FIGS. The coffee extraction device according to the present embodiment includes an extractor main body 1, an annular filter support 2 abutting on one end 1 a of the extractor main body 1,
A plate filter 3 fitted to the filter support 2. An annular step portion 2a reaching the inner edge is formed on a contact surface of the filter support 2 with one end 1a of the extractor main body.
An O-ring 4 is detachably fitted to the outer edge of the annular step 2a. An annular member 5 is placed on the inner edge of the annular step 2a in contact with the O-ring 4. The upper surface of the annular member 5 is positioned flush with the contact surface of the filter support 2 with one end 1a of the extractor main body. A paper filter 6 is disposed between the O-ring 4 and one end 1a of the extractor main body 1. An on-off valve 7 is provided movably in the extractor main body 1. An air nozzle 9 extends from the air pump 8 placed outside the extractor main body 1 through the on-off valve 7 into the extractor main body 1.

In the coffee extracting apparatus according to the present embodiment, a paper filter 6 is placed on the filter support 2, and the filter support 2 is pressed against one end 1a of the main body 1 of the extractor, and one end 1a of the main body 1 of the extractor. Paper filter 6
Together with the O-ring 4 so that one end 1 of the extractor body 1
a and the filter support 2 to seal the sandwiched portion of the paper filter 6. The on-off valve 7 is opened as shown by a dashed line in FIG. 1, coffee bean powder and hot water are supplied to the extractor main body 1, and the on-off valve 7 is closed as shown by a solid line in FIG. Then, pressurized air is blown into the main body 1 of the extractor through the air nozzle 9 to agitate the coffee bean powder and the hot water to mix the coffee bean powder and the hot water in a fluid state, thereby extracting the coffee liquid. Since it is extracted under pressure,
A coffee extract can be obtained in a short time. The coffee extract passes through the paper filter 6 and the plate filter 3 and is taken out through the opening of the filter support 2. After the extraction of the coffee liquid, the paper filter 6 and the filter support 2 are separated from the main body 1 of the extractor, and the paper filter 6 on which the coffee residue is placed moves to the side and is discarded together with the coffee residue.

In the coffee brewing apparatus according to the present embodiment, an annular step 2a reaching an inner edge formed on a contact surface of the filter support 2 with one end 1a of the extractor body, and an annular step 2
a, an annular groove for accommodating the O-ring 4 is formed by the annular member 5 placed on the inner edge of the O-ring 4.
Are fitted. When the annular member 5 and the O-ring 4 are removed,
The annular groove disappears, leaving an annular step 2a reaching the inner edge formed in the filter support 2. Removed annular member 5
By washing the O-ring 4 and the annular step 2a of the filter support 2, the coffee liquid permeated into the annular groove for accommodating the O-ring 4 can be easily removed.

A coffee brewing apparatus according to a second embodiment of the present invention will be described with reference to FIG. In the filtering coffee extraction device according to the present embodiment, a second annular step 2b is formed at the inner edge of the annular step 2a of the filter support 2. An annular member 5 'is detachably fitted to the second annular step 2b. The upper surface of the annular member 5 'is positioned flush with the contact surface of the filter support 2 with one end 1a of the extractor body. Except for the above, the configuration of the coffee extraction device according to the present embodiment is the same as the configuration of the coffee extraction device according to the first embodiment. A second annular step 2b is formed on the inner edge of the annular step 2a, and the annular member 5 'is detachably fitted to the second annular step 2b, so that the annular member 5' is attached to the filter support 2. Positioning at the time of attachment becomes easy.

Although the embodiment of the present invention has been described above, the present invention is not limited to the above embodiment. In the first and second embodiments, a flat packing may be provided instead of the O-ring 4. The present invention is also applicable to a coffee extraction device of a filtration system that extracts coffee liquid by passing hot water through a layer of coffee bean powder.

[0011]

As described above, in the coffee brewing apparatus according to the present invention, the annular step portion reaching the inner edge formed on the contact surface of the annular filter support with one end of the brewing machine main body and the annular step portion are provided. An annular groove for accommodating the annular seal member is formed by the annular member placed on the inner edge of the portion, and the annular seal member fits into the annular groove. When the annular member and the annular seal member are removed, the annular groove disappears, leaving an annular step extending to the inner edge formed on the filter support.
By washing the removed annular member, the annular seal member, and the annular step portion of the filter support, it is possible to easily remove the coffee liquid that has permeated the annular groove that houses the annular seal member.

A second annular step is formed at an inner edge of the annular step, and the annular member is detachably fitted to the second annular step, so that the annular member is attached to the filter support. Positioning becomes easy.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a coffee extracting device according to a first embodiment of the present invention.

FIG. 2 is an enlarged view of a portion A shown in FIG.

FIG. 3 is a view corresponding to FIG. 2 of a coffee extraction device according to a second embodiment of the present invention.

FIG. 4 is a longitudinal sectional view of a conventional coffee extraction device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Extractor main body 1a One end of extractor main body 2 Filter support 2a Annular step 2b 2nd step 3 Plate filter 4 O-ring 5, 5 'Annular member 6 Paper filter 7 On-off valve 8 Air pump 9 Air nozzle

Claims (2)

[Claims] 1. An extractor main body, an annular filter support abutting on one end of the extractor main body, and a plate-shaped filter fitted on the filter support, wherein a contact surface of the filter support with one end of the extractor main body is provided. An annular step leading to the inner edge is formed at
A coffee extracting apparatus, wherein an annular seal member is detachably fitted to an outer edge of the annular step, and an annular member is placed on an inner edge of the annular step in contact with the annular seal member. 2. A second annular step portion is formed at an inner edge of the annular step portion, and the annular member is detachably fitted to the second annular step portion. The coffee extraction device according to claim 1.