JP6087614B2 - Coffee extractor - Google PatentsCoffee extractor Download PDF
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- JP6087614B2 JP6087614B2 JP2012275961A JP2012275961A JP6087614B2 JP 6087614 B2 JP6087614 B2 JP 6087614B2 JP 2012275961 A JP2012275961 A JP 2012275961A JP 2012275961 A JP2012275961 A JP 2012275961A JP 6087614 B2 JP6087614 B2 JP 6087614B2
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- 239000010410 layers Substances 0.000 claims description 107
- 238000001914 filtration Methods 0.000 claims description 59
- 230000003014 reinforcing Effects 0.000 claims description 32
- 239000000203 mixtures Substances 0.000 claims description 22
- 230000002093 peripheral Effects 0.000 claims description 13
- 239000002184 metal Substances 0.000 claims description 11
- 229910052751 metals Inorganic materials 0.000 claims description 11
- 238000005245 sintering Methods 0.000 claims description 7
- 239000000284 extracts Substances 0.000 claims description 5
- 238000000605 extraction Methods 0.000 claims description 2
- 239000000463 materials Substances 0.000 description 8
- 239000011521 glass Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
The present invention relates to a coffee extractor that puts coffee powder and hot water in a container and extracts a coffee liquid by a so-called coffee press (French press) method, and more particularly, the filter structure for extracting the coffee liquid is simplified and easy to clean. In addition, the present invention relates to a coffee extractor that can improve the filtration efficiency without reducing the filtration area of the coffee liquid and can eliminate the powderiness of the coffee liquid.
A conventional coffee press type coffee extractor puts a certain amount of ground coffee beans in a container with hot water and waits for a predetermined time or stirs the hot water to extract the desired amount of coffee liquid. Push down the pressure filtration assembly with a concave filter screen to the bottom of the container, confine the coffee powder between the pressure filtration assembly and the bottom of the container, and transfer the extracted coffee liquor to the cup for drinking (For example, refer to Patent Document 1).
Further, as another type of coffee extractor of this type, there are a container for extracting coffee liquid from coffee powder, and a plan for filtering the extracted coffee liquid that can be inserted into the container and pulled upward. A jar, and the plunger was provided with a slag receiver into which the coffee powder was placed, and a filter provided below the slag receiver and having a concave shape (see, for example, Patent Document 2). ).
However, in the conventional coffee extractor described in Patent Document 1, since the mesh of the filter screen is not sufficiently fine with respect to the coffee powder particles, the coffee powder may be mixed into the extracted coffee liquid. In addition, when extracting the coffee liquid, the concave concave filter screen is pushed downwards, so that pressure that acts between the filter screen and the container wall is spread by the liquid containing coffee powder without escape. Since a part of the liquid containing coffee powder leaks from here and is mixed with the coffee liquid, powdery coffee may be produced as a result.
On the other hand, in another coffee extractor described in Patent Document 2, the plunger for filtering the coffee liquid is pulled upward from the bottom of the container in a container in which the coffee liquid is extracted from the coffee powder. The pressure is applied in the direction that the concave filter and the container wall are in close contact with each other to prevent the coffee liquid containing coffee powder from leaking out between the filter and the container, and the coffee powder is used as a coffee grounds receiver. Since it filters while catching, the coffee liquid which hardly contains coffee powder can be extracted. However, the plunger that filters the coffee liquid is equipped with a filter base, a concave filter, a filter presser, a coffee grounds receiver, and other filters with fine mesh if necessary, and the number of parts is reduced. It was a lot. As described above, since the number of parts is large, the structure of the plunger is complicated, and the cleaning and assembling work of the filter portion is sometimes complicated and difficult. In addition, the filter base and the filter retainer are arranged on the upper and lower surfaces of the concave filter, and the filter surface is blocked by the member surface other than the notch opening of the filter base and the filter retainer. In some cases, the area was reduced and the filtration efficiency was lowered.
Therefore, the problem to be solved by the present invention that addresses such problems is to simplify the filter structure for extracting the coffee liquid, facilitate cleaning, and improve the filtration efficiency without reducing the filtration area of the coffee liquid. An object of the present invention is to provide a coffee extractor that can be improved and can eliminate the powderiness of the coffee liquid.
In order to solve the above-mentioned problems, a coffee extractor according to the present invention is a coffee extractor for extracting coffee liquid by putting coffee powder and hot water in a container, and the upper part is open to accommodate a mixture of coffee powder and hot water. A container that is inserted through the upper opening of the container and pushed down to the lower part, and is attached to the lower end of the rod-shaped member of the plunger, and is made of a metal and mesh filter material and a metal mesh The filtration layer has a fine mesh capable of separating coffee powder, and the reinforcement layer has a coarser mesh than the filtration layer and a plurality of layers. Each layer has a different mesh roughness, and the mesh gradually becomes coarser toward the one away from the one near the filtration layer, and the filtration layer and the reinforcing layer are sintered. And are integrated with, a filter for extracting coffee liquid by filtering the mixture of the coffee grounds and hot water, mounted on the outer periphery of the filter, between the outer edge of the inner peripheral surface and the filter of the container And a seal member for preventing leakage.
Furthermore, the filter may be detachably attached to a lower end portion of the rod-shaped member of the plunger.
Still further, the filter may be attached to the plunger such that the filtration layer is positioned below and the reinforcing layer is positioned above the axial direction of the rod-shaped member of the plunger.
Moreover, the lid | cover which covers the upper opening part of the said container is good also as what is attached to the rod-shaped member of the said plunger so that a movement in the axial direction of the said rod-shaped member is possible.
According to the coffee extractor of the present invention, a mixture of coffee powder and hot water is contained in a container having an upper opening, and a plunger inserted from the upper opening of the container is pushed down to the lower part, and the lower end of the plunger rod-like member attached to parts, Ri formed in combination with at least one layer reinforcing layer made of mesh-like member in the filtration layer and the metal consisting of mesh-like filtering member made of metal, the filtration layer is separable coffee powder It has a fine mesh, the reinforcing layer has a coarser mesh than the filtration layer and has a plurality of layers, each of which has a different mesh roughness, and away from a position close to the filtration layer. sequentially mesh becomes rough, the filtration layer and the filter are integrated reinforcement layer by sintering, extracted child coffee was filtered mixture of the coffee grounds and hot water Can. At this time, the sealing member attached to the outer peripheral edge of the filter can prevent leakage between the inner peripheral surface of the container and the outer peripheral edge of the filter.
In the present invention, the filter is formed by combining a filter layer made of a metal and a mesh-like filter material and at least one reinforcing layer made of a metal and a mesh-like member, so that the coffee liquid is extracted. The filter structure can be simplified to facilitate cleaning, and the filtration efficiency can be improved without reducing the filtration area of the coffee liquid. Moreover, since the filter layer of the filter has a fine mesh capable of separating the coffee powder, the coffee liquid and the coffee powder can be separated to eliminate the powderiness of the coffee liquid. Furthermore, since the filtration layer and the reinforcing layer of the filter are integrated by sintering, the opening of the filtration layer can be prevented and the mixture of coffee powder and hot water can always be filtered under the same conditions. Furthermore, since the filtration layer is integrated with the reinforcing layer by sintering, it is possible to prevent the filtration layer from being damaged even when it is repeatedly used a plurality of times.
Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.
FIG. 1 is a perspective view showing an embodiment of a coffee extractor according to the present invention. This coffee extractor puts coffee powder and hot water into a container and extracts coffee liquid by a so-called coffee press (French press) system. The container 1, the plunger 2, the filter 3, and the seal member 4 are combined. Be prepared.
The container 1 is opened at the top and accommodates a mixture of coffee powder and hot water, and is formed into a beaker shape (bottomed cylindrical shape) made of, for example, transparent or heat-resistant glass or plastic.
A plunger 2 is inserted into the container 1. The plunger 2 pushes a filter 3 described later to the lower part of the container 1, has a rod-like member 2 a longer than the height of the container 1, and is inserted from the upper opening of the container 1 and pushed down to the lower part. It has become. Reference numeral 2b denotes a ball-shaped knob provided at the upper end of the rod-shaped member 2a.
A filter 3 is attached to the lower end of the rod-like member 2a of the plunger 2. This filter 3 filters the coffee powder and hot water contained in the container 1 to extract the coffee liquid. As shown in FIG. 2, the filter 3 includes a filtration layer 3a and at least one reinforcing layer 3b. And a combination.
The filter layer 3a is used to actually filter a mixture of coffee powder and hot water, is made of a metal and mesh-like filter material, and is formed in a disk shape with a diameter that can enter the container 1. This member uses stainless steel (for example, SUS316, 304), titanium, copper alloy, etc. as a material, and has a fine mesh (for example, about 350 mesh) that can separate coffee powder, and acts as a filter medium. . In this case, a fine powder of about 40 μm can be filtered with a filter material of about 350 mesh.
When the filter layer 3a filters the mixture of coffee powder and hot water, the reinforcing layer 3b is subjected to resistance of the liquid containing the mixture to the filter layer 3a. It is responsible for strength so as not to break. The reinforcing layer 3b is made of a metal and mesh-like member, and is formed in a disk shape with the same diameter as the filtration layer 3a. This metal and mesh-like member uses the same material as the filtration layer 3a as a material, has a coarser mesh than the filtration layer 3a, and acts as a filtration material.
In the embodiment of FIG. 2, the reinforcing layer 3b is composed of a plurality of layers, for example, three layers (5a, 5b, 5c), and the mesh roughness of each layer is different. In this case, the mesh is gradually roughened from the one close to the filtration layer 3a (5c) toward the one separated from the filter layer 3a (5a). For example, the third reinforcement layer 5c closest to the filtration layer 3a is about 60 mesh, the next second reinforcement layer 5b is about 28 mesh, and the first reinforcement layer 5a farthest from the filtration layer 3a is also about 28 mesh. It is said that. As described above, the reason why the second and third reinforcing layers 5b and 5c are provided as the intermediate layer between the filtering layer 3a and the first reinforcing layer 5a is that the fine mesh filtering layer 3a is used as the coarse mesh first. If the filter layer 3a is directly supported by the reinforcing layer 5a, the filter medium of the filter layer 3a may be partially broken without being completely supported. It is intended to be supported on the entire surface.
In FIG. 2, reference numeral 6 denotes an attachment hole into which a fitting is inserted when the filter 3 is detachably attached to the lower end portion of the rod-like member 2 a of the plunger 2, and the filtration layer 3 a and the reinforcing layer 3 b ( 5a, 5b, 5c).
Here, in the present invention, as shown in FIG. 3, the filter 3 is integrated by sintering the filtration layer 3a and the reinforcing layer 3b (5a, 5b, 5c). In this sintering, the filtration layer 3a and the reinforcing layer 3b (5a, 5b, 5c) are bonded by heating at, for example, 500 to 1500 ° C. for about 30 minutes to 6 hours. At this time, the attachment holes 6 of the filtration layer 3a and the reinforcing layer 3b (5a, 5b, 5c) are matched to form one hole. Thus, by sintering and integrating the filtration layer 3a and the reinforcing layer 3b, the opening of the filtration layer 3a can be prevented, and the mixture of coffee powder and hot water can always be filtered under the same conditions. Moreover, it can filter, without coffee powder entering between each layer of the filtration layer 3a and the reinforcement layer 3b. Furthermore, the filtration layer 3a is sintered and integrated with the reinforcing layer 3b, so that the filtration layer 3a can be prevented from being damaged even when it is repeatedly used a plurality of times.
As shown in FIG. 4, a seal member 4 is attached to the outer peripheral edge of the filter 3 integrated in this way. The seal member 4 is used to prevent leakage between the inner peripheral surface of the container 1 and the outer peripheral edge of the filter 3, and is made of, for example, silicon rubber. The outer diameter of the seal member 4 is set to be slightly larger than the inner diameter of the container 1 and is slid while being bent in contact with the inner peripheral surface of the container 1. Thereby, when filtering the mixture of coffee powder and hot water inside the container 1, a part of the liquid containing coffee powder leaks from between the inner peripheral surface of the container 1 and the outer peripheral edge of the filter 3. Prevent it from mixing with the filtered coffee liquor.
The filter 3 is detachably attached to the lower end portion of the rod-like member 2a of the plunger 2. That is, as shown in FIG. 5, a downward projection of the first mounting bracket 7a is inserted from above into the mounting hole 6 formed in the center of the filter 3 shown in FIG. The first and second mounting brackets 7a and 7b are inserted so that the upper projections of the second mounting bracket 7b are inserted into the engaging hole 8 formed in the central shaft portion from below and the upper and lower surfaces of the filter 3 are sandwiched therebetween. Is attached. At this time, the insertion and coupling of the upward projection of the second mounting bracket 7b with respect to the engagement hole 8 of the first mounting bracket 7a is performed by inserting or coupling by elastic or uneven shape between both members or male and female threading. On the contrary, the second mounting bracket 7b can be uncoupled and removed from the first mounting bracket 7a.
Thus, with the first and second mounting brackets 7a and 7b attached to the filter 3, the first mounting bracket 7a is hooked to the lower end portion of the rod-like member 2a of the plunger 2 shown in FIG. Then, the filter 3 is attached to the lower end of the rod-like member 2a of the plunger 2. In this case, the first mounting bracket 7a is latched to the lower end portion of the rod-shaped member 2a by inserting the lower end portion of the rod-shaped member 2a into the engagement hole 8 formed in the central shaft portion of the first mounting bracket 7a. The two members are connected by elasticity or uneven shape or male / female threading or the like, and conversely, the first attachment fitting 7a is uncoupled and can be removed from the extraction rod member 2a. Thereby, the filter 3 is detachably attached to the lower end portion of the rod-like member 2a of the plunger 2.
The filter 3 is attached to the plunger 2 such that the filtration layer 3a is located below and the reinforcing layer 3b (5a) is located above the axial direction of the rod-like member 2a of the plunger 2. Is desirable. When the reinforcing layer 3b (5a) is placed downward, coffee powder may adhere to the mesh of the reinforcing layer 3b (5a) having a coarser mesh than the filtering layer 3a, making it difficult to clean the filter 3, and coffee powder. It is because it becomes unhygienic when it remains. If such a problem does not occur, the reinforcing layer 3b (5a) may be positioned below and the filtration layer 3a may be positioned above.
In the above description, as shown in FIGS. 2 and 3, the reinforcing layer 3b of the filter 3 is composed of three layers (5a, 5b, 5c). However, the present invention is not limited to this, and one layer is provided. Alternatively, it may be two layers or four or more layers. When the reinforcing layer 3b is a single layer, it is desirable to leave the first reinforcing layer 5a (for example, about 28 mesh). Further, when the reinforcing layer 3b has a plurality of layers, any number of layers may be used, but a position away from a position close to the filtration layer 3a having a fine mesh (for example, about 350 mesh) from which coffee powder can be separated. What is necessary is just to arrange | position so that a mesh may become coarse gradually toward the thing.
A lid 9 is attached to the rod-like member 2 a of the plunger 2. The lid 9 covers the upper opening of the container 1, is formed in a bowl shape convex upward, and is attached so as to be movable in the axial direction of the rod-like member 2a. Thereby, the upper opening part of the container 1 which accommodated the mixture of coffee powder and hot water can be covered.
Next, the use of the coffee extractor configured as described above will be described with reference to FIGS.
First, as shown in FIG. 6, coffee powder 10 in which coffee beans are ground (preferably medium ground to coarse ground) is put in a container 1. What is necessary is just to adjust the quantity of the coffee powder 10 suitably according to the number of people who drink coffee, or the preference of the strength. Next, as shown in FIG. 7, hot water having a temperature of about 90 to 96 ° C. is put into the container 1 containing the coffee powder 10. What is necessary is just to adjust the quantity of hot water suitably according to the number of people who drink coffee, or the preference of strength. In the container 1, a mixture 11 of coffee powder and hot water is produced, and coffee is extracted. Contrary to the above, hot water may be put in the container 1 first, and then the coffee powder 10 may be put.
Next, as shown in FIG. 8, the plunger 2 is inserted from the upper opening of the container 1, and the filter at the lower end of the rod-shaped member 2 a of the plunger 2 is placed on the upper surface of the mixture 11 of coffee powder and hot water in the container 1. Place 3 so that it touches. At this time, the lid 9 is placed on the upper opening of the container 1. In this state, wait for about 3 to 4 minutes and steam to extract the coffee liquid.
Next, after about 3 to 4 minutes, as shown in FIG. 9, the plunger 2 is gently pushed down by holding the knob 2 b of the plunger 2, and the filter 3 at the lower end of the rod-shaped member 2 a is placed at the bottom of the container 1. To reach. At this time, the coffee powder / hot water mixture 11 (see FIG. 8) is filtered by the filter 3. The mixture 11 is separated into the coffee powder 10 and the coffee liquid 12 by the filter 3 and the sealing member 4 reaching the bottom of the container 1, and the coffee liquid 12 is extracted into the upper half of the container 1. In this case, the coffee powder 10 is not mixed with the coffee liquid 12, and the powderyness of the coffee liquid 12 can be eliminated.
Next, the coffee liquid 12 extracted into the container 1 is poured from a spout 13 of the container 1 into a coffee cup (not shown) for drinking. In the embodiment shown in FIGS. 6 to 9 described above, the container 1 is not provided with a handle or a holder for lifting the container 1 or pouring the coffee liquid 12 into the coffee cup. A handle may be attached to the container 1 or a holder may be detachably combined.
DESCRIPTION OF SYMBOLS 1 ... Container 2 ... Plunger 2a ... Plunger rod-shaped member 3 ... Filter 3a ... Filtration layer 3b, 5a, 5b, 5c ... Reinforcement layer 4 ... Sealing member 6 ... Mounting hole 7a, 7b ... Mounting bracket 8 ... First mounting bracket Engagement hole 9 ... lid 10 ... coffee powder 11 ... mixture 12 ... coffee liquid
- A coffee extractor for extracting coffee liquid by placing coffee powder and hot water in a container,
A container that is open at the top and contains a mixture of coffee powder and hot water;
A plunger inserted from the upper opening of the container and pushed down to the bottom;
Attached to the lower end portion of the rod of the plunger comprises a combination of at least one layer reinforcing layer made of mesh-like member in the filtration layer and the metal consisting of mesh-like filtering member made of metal, the filtration layer It has a fine mesh capable of separating coffee powder, the reinforcing layer has a coarser mesh than the filtration layer, and is composed of a plurality of layers, each of which has a different mesh roughness, and separated from the one close to the filtration layer The mesh is gradually coarsened toward the one at the position, the filter layer and the reinforcing layer are integrated by sintering, and a filter that extracts the coffee liquid by filtering the mixture of coffee powder and hot water,
A seal member attached to the outer peripheral edge of the filter and preventing leakage between the inner peripheral surface of the container and the outer peripheral edge of the filter;
A coffee extractor comprising:
- The coffee extractor according to claim 1 , wherein the filter is detachably attached to a lower end portion of a rod-shaped member of the plunger.
- Mounting of the filter into the plunger, coffee extract according to claim 1 or 2 filtration layer relative to the axial direction of the rod of the plunger is positioned below the reinforcing layer, characterized in that located above vessel.
- The coffee extraction according to any one of claims 1 to 3 , wherein a lid covering the upper opening of the container is attached to the plunger-like member so as to be movable in the axial direction of the rod-like member. vessel.
Priority Applications (1)
|Application Number||Priority Date||Filing Date||Title|
|JP2012275961A JP6087614B2 (en)||2012-12-18||2012-12-18||Coffee extractor|
Applications Claiming Priority (1)
|Application Number||Priority Date||Filing Date||Title|
|JP2012275961A JP6087614B2 (en)||2012-12-18||2012-12-18||Coffee extractor|
|Publication Number||Publication Date|
|JP2014117515A JP2014117515A (en)||2014-06-30|
|JP6087614B2 true JP6087614B2 (en)||2017-03-01|
Family Applications (1)
|Application Number||Title||Priority Date||Filing Date|
|JP2012275961A Active JP6087614B2 (en)||2012-12-18||2012-12-18||Coffee extractor|
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|JP (1)||JP6087614B2 (en)|
Families Citing this family (4)
|Publication number||Priority date||Publication date||Assignee||Title|
|WO2015189917A1 (en) *||2014-06-10||2015-12-17||富士フィルター工業株式会社||Coffee extractor|
|WO2016049846A1 (en) *||2014-09-30||2016-04-07||主力电器制品厂有限公司||Dregs expulsion device for automatic coffee maker and automatic coffee maker|
|CN105030062A (en) *||2015-07-23||2015-11-11||范晓璇||Soybean milk machine with filtering function|
|EP3345516B1 (en) *||2016-09-29||2020-06-24||Guangdong Midea Consumer Electrics Manufacturing Co., Ltd.||Coffee machine strainer and coffee machine|
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|DE3126629A1 (en) *||1981-07-06||1983-01-20||Maxs Ag||Coffee maker|
|JP3010582B2 (en) *||1989-12-01||2000-02-21||芝浦メカトロニクス株式会社||Bonding equipment|
|EP1009269B1 (en) *||1997-08-07||2003-01-29||Pi-Design Ag||Piston coffee maker for preparing coffee in small amounts|
|JPH11244151A (en) *||1998-02-27||1999-09-14||Doutor Coffee Co Ltd||Coffee extracting tool|
|AU735073B3 (en) *||2000-10-11||2001-06-28||Nick O'loughlin||Cup plunger|
|US20050109689A1 (en) *||2003-11-20||2005-05-26||Trachtenbroit Lawrence M.||Methods and apparatuses for filtering|
|US7389720B2 (en) *||2003-12-30||2008-06-24||Haverstock Thomas B||Coffee infusion press for stackable cups|
|RU2387360C2 (en) *||2005-04-11||2010-04-27||Старбакс Корпорейшн||Machine and method for preparation of drink, such as coffee|
|WO2007027206A2 (en) *||2005-04-11||2007-03-08||Coffee Equipment Company||Machine for brewing a beverage such as coffee and related method|
|JP2010063510A (en) *||2008-09-09||2010-03-25||Tatsuya Murai||Beverage brewer|
|JP2011206526A (en) *||2010-03-10||2011-10-20||Makoto Takagi||Coffee extractor and method for extracting coffee|
- 2012-12-18 JP JP2012275961A patent/JP6087614B2/en active Active
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