JP4119466B2 - Filtration apparatus and water-draining coffee extraction apparatus using the same - Google Patents

Description

  The present invention relates to a filtration device used in a coffee extraction device, and more particularly to a filtration device that is optimal for a water-draining coffee extraction device.

2. Description of the Related Art Conventionally, a drained coffee extraction device has a tank for storing dripping water, a filtering device for placing coffee powder inside the tank, receiving the dripping water, and extracting coffee, and dropping from the filtering device. It consists of a pot that catches coffee. The filter has openings at both ends, but the upper part has a large opening area and the lower part has a small opening area so that the discharge port protrudes. The thing of the magnitude | size which is put in the inside of the inside and does not fall from the discharge port was used (for example, refer patent document 1).
JP 2001-078892 A

  However, when the discharge port protruding to the filtration device is formed as described above, it is easy to drop the extract into the pot, but there is a high possibility that the discharge port may be damaged during cleaning or other handling. Moreover, since the filtering material is only placed inside the filtering device, the filtering material moves when the coffee powder is put into the filtering device, and the coffee powder wraps under the filtering material to extract it. Sometimes it falls into the pot with the extract. Therefore, extracted or unextracted coffee powder may be mixed in the extracted coffee, which may impair the taste of the coffee.

  Further, when the coffee powder is discarded from the filtering device after the extraction, it is discarded from the upper opening, so that the filtering material may be discarded together.

  Therefore, an object of the present invention is to provide a filtration device that is easy to clean and can reliably drop only extracted coffee.

In order to achieve the above object, the invention corresponding to claim 1
A filtering device equipped with a filtering material used in an apparatus for extracting coffee by dripping water from a nozzle of a water reservoir,
The filtration instrument has a cylindrical filtration instrument body formed by opening both end portions in the length direction and forming a reduced diameter portion in the vicinity of the lower end opening ,
A frame body provided fitted in the lower end in the longitudinal direction of the filtration device body,
A filter medium incorporated in the frame body and provided so as to close the opening of the filtration instrument body , the frame body having a cylindrical shape with both ends opened and a flange portion formed at the upper end opening, The present invention relates to a filtration instrument characterized in that when the frame is fitted to the filtration instrument body, the flange portion protrudes from the reduced diameter part of the filtration instrument body .

  Thus, by forming the openings at both ends of the filtration instrument body, the container body can be easily cleaned. In addition, since the extraction port is not formed by drawing the bottom of the filter body as a cylinder without a bottom surface, it is possible to eliminate the cause of the damage to the extraction port.

  The “cylindrical shape having no bottom surface at the lower end” includes not only forming a bottom surface by drawing but also not forming an extraction port in a funnel shape. However, when installing the filtration instrument on a predetermined frame material that does not particularly affect the extraction (ie, the extraction port), the filtration instrument (the filtration instrument body) can be easily installed. It is not excluded to reduce the diameter of the lower end of).

The invention corresponding to claim 2 is the filtration instrument according to the invention corresponding to claim 1, wherein the frame body is made of silicon. Since the frame is made of silicon, the shape can be easily deformed and can be easily brought into close contact with the lower end opening.

Invention corresponding to claim 3, in which the filtering apparatus according to the invention corresponding to claim 1 or 2, and detachable the strained material to the frame. By this way detachable, it is easy to wash the strained material and the frame, and if these parts is damaged, can be easily replaced. Moreover, the filter apparatus main body can also be easily washed with a sponge for washing a dishwasher or a cup.

According to a fourth aspect of the present invention, in the filtration device according to the first to third aspects of the present invention, the filtering material includes a filter portion and a support material. In this way, by configuring the filtering material, even if the weight of the coffee powder or the weight of the dropped water is added, the support material can be firmly held by the frame body .

Invention corresponding to claim 5, in the filtration device according to the invention corresponding to claim 4, wherein the strainer material when extracting coffee, to constitute a pre-Symbol filter unit so as to recess in the lower. As described above, since the filter portion is convex downward, the extracted coffee can be dripped from the convex portion, so that the extracted coffee is easily dropped and remains in the filtering device. Can be reduced.

According to a sixth aspect of the present invention, in the filtering instrument according to the fifth aspect of the present invention, when the filter portion is formed to be recessed downward , the support member is directed toward the center of the filtering member. The branch part extended was formed . When the filter part is depressed downward , at least part of the deformation is supported by the support body of the filtering material, so that the strength of the filter part when the filter part is depressed downward is sufficiently increased. Can be held high.

  In the invention corresponding to claim 7, a filtration device provided with a filtering material is placed on the upper part of the receiving container, a water reservoir portion provided with a water dropping nozzle is disposed above the filtration device, and the filtration device is provided. A water-depositing coffee extraction device for charging coffee powder and extracting coffee liquid to the receiving container through the filter medium with water dropped from the dropping nozzle, described in any one of claims 1 to 6. Use a suitable filtering device.

  Since the filtration instrument of the present invention uses a wide opening at both ends of the filtration instrument body, it is easy to clean and difficult to break. In addition, since the filtering material is composed of the filter part and the support material, the support material can be held firmly when the filtering material is attached to the frame material, so that coffee powder is dropped into the container during extraction. There is no fear.

  Embodiments of the present invention will be described below with reference to the drawings.

(Filtering equipment)
FIG. 1 is a partial cross-sectional configuration diagram schematically illustrating an example of the filtration device of the present invention, and FIG. 2 is a partial cross-sectional configuration diagram illustrating an enlarged frame material portion of the filtration device illustrated in FIG. FIG. 3 is an enlarged partial cross-sectional view showing the filtering material portion shown in FIG. In these drawings, the cross section is shown on the right side of the center line.

  A filtration device 1 shown in FIG. 1 includes a filtration device body 2 and a frame 3 attached to the filtration device body 2. Moreover, the filter medium 4 is detachably attached to the frame 3 so as to close the opening located at the lower end of the filtration instrument body 2.

The filtration instrument body 2 can be formed, for example, by blow-molding borosilicate glass. The upper end opening can have an inner diameter of 52 mm and the lower end opening can have an inner diameter of 35 mm. As can be seen from FIG. 1, a first reduced diameter portion 5 having a reduced inner diameter is formed near the upper end opening, and a second reduced diameter portion 6 having a further reduced inner diameter is formed near the lower end opening. . The inner diameter between the first reduced diameter portion 5 and the second reduced diameter portion 6 is 47 mm, and in this embodiment, the reduced diameter at the lower end is 12 mm. The second reduced diameter portion 6 constitutes a fitting portion when the frame body 3 described above is fitted to the filtration instrument main body 2 and attached to the lower end opening.

  The frame 3 is made of silicon, and as shown in FIG. 2, when the both ends are opened and the upper end opening is fitted to the filter device body 2, the frame body 3 protrudes into the filter device body 2. In the flange portion 7 configured as described above, and a lower end opening, a filtering material 4 described later is incorporated, and a holding portion 8 for holding is formed. The outer diameter of the frame 3 is larger than the inner diameter of the lower end opening of the filtration instrument main body 2, and is held by the filtration instrument main body 2 by the repulsive force of the frame when the frame 3 is attached. .

  The filter material 4 is made of polyester, and is formed by integrally forming a filter portion 9 and a support material 10 as shown in FIG. The support member 10 has a donut shape (ring shape) and is incorporated into the holding portion 8 of the frame 3. The filter unit 9 is formed into a mesh having an opening of 44 μm.

  In the filtration instrument 1 in this example, since the openings are formed at both ends of the filtration instrument body, the container body can be easily cleaned. Moreover, since the exhaust port is not formed by drawing the lower end of the filter device body as in the prior art, problems such as breakage of the exhaust port can be eliminated. Moreover, since the frame 3 is made of silicon, when it is attached to the lower end opening of the filtration instrument main body 2, that is, the second reduced diameter portion 6, its shape can be easily deformed and easily fitted and fixed. can do.

  Moreover, since the filtering material 4 is detachably attached to the frame 3 so as to close the opening located at the lower end of the filtering instrument body 2, the filtering material 4 and the frame 3 can be easily cleaned. And if these parts are damaged, they can be easily replaced. Further, the filter device main body 2 can be easily washed with a sponge for washing a dishwasher or a cup. Further, in the filtering device 1, since the filtering material 4 is formed by integrally forming the filter portion 9 and the supporting material 10, even if the weight of the coffee powder or the weight of the dropped water is added, the supporting material. The filtering material 4 can be firmly held by the frame 3 through 10.

4-6 is a figure which shows the other example in the filtration instrument 1 of this invention. In this example, the configuration of the filtering material is only changed with respect to the examples relating to FIGS. 1 to 3, and the other components are the same. Therefore, in the following, the constituent elements of the filtering material will be described in detail. The same reference numerals are used for similar or identical components. 4 is a plan view of the filtering material 4 as viewed from below, FIG. 5 is a side sectional view of the filtering material 4, and FIG. 6 is a side view of the filtering material 4. As shown in FIG.

  As shown in FIGS. 4 to 6, in the filtering material 4, the filter portion 9 is recessed downward, and the support material 10 is provided with a branch-like portion 11 extending toward the center of the filtering material 4. When viewed as a whole, it is configured to protrude downward. Therefore, since the extracted coffee can be dripped from the convex part which protruded below the filtering material 4, it becomes easy to dripping the extracted coffee easily, and the extracted coffee which remains in the filtration instrument 1 can be decreased. .

  Further, since the support material 10 is provided with a branch-like portion 11 extending toward the center of the filtering material 4, thereby supporting the filter portion 9 deformed into a convex shape, the filtering material 4 protrudes downward. The strength at the time of deformation can be kept sufficiently high. Further, the branch portion 11 does not extend to the center of the filtering material 4, and the vicinity of the center is a filter portion. Thus, by leaving the vicinity of the center in the filter portion, the extracted coffee can be dripped smoothly.

  In addition, in the example shown in FIGS. 4-6, although it is made to comprise from the ring-shaped member (doughnut member) which formed the support material 10 in single, it shall be set as the ring-shaped member (doughnut member) more than double. Can do. In this case, it can also be set as the structure which couple | bonds the branch-shaped part 11 extended from the outer ring-shaped member with an inner ring-shaped member.

  Moreover, in the example shown to FIGS. 4-6, although the three branch parts 11 are formed, the intensity | strength of a filter part can be improved if at least two are formed. Moreover, you may form the filtering material 4 so that the location made convex may be two places and three places.

(Water extraction coffee extraction device)
Next, a drained coffee extraction device using the above-described filtration device will be described. FIG. 7 is a partial cross-sectional configuration diagram showing an example of the drained coffee extraction device of the present invention. In FIG. 7, a portion on the right side of the center line is shown as a cross section.

  The drained coffee extraction apparatus 101 shown in FIG. 7 includes a support column 102, a receiving container 104 that stores the extracted coffee, a filter instrument holder 105 that is placed in an opening of the receiver container 104, and a coffee installed in the filter instrument holder 105. It consists of a filtration device 1 for putting powder, a water reservoir portion 106 disposed above the filtration device 1, and a water supply portion 107 for supplying water to the water reservoir portion 106. The filtration device 1 is the filtration device of the present invention as described above.

  The support column 102 is made by processing three wire rods. The lower portion is formed with a receiving tray on which the receiving container 104 is placed, to which the three wire rods constituting the support column 102 can be attached. A holder 108 for holding a water supply portion 107 and a water reservoir portion 106 is attached.

  The receiving container 104 is made of borosilicate glass and formed by blow molding. An opening is formed at the upper end, and a ripple is formed at an arbitrary position.

  The filter device holder 105 is made of stainless steel, and is placed in the opening of the receiving container, and an opening hole for installing the filter device 1 is formed. The first reduced diameter portion 5 of the filtration device 1 is installed in the opening hole.

  The water reservoir 106 is formed of a cylindrical member made of borosilicate glass and having both ends opened, and an adjustment cock 109 attached to the lower end opening of the cylindrical member. The upper end opening of the tubular member is expanded in a flared shape so as to be hooked in a hole formed in the holder 108. The adjustment cock 109 is formed of a silicon plug 110 fitted into the lower end opening of the cylindrical member and a metal nozzle 111 fitted into the silicon plug 110.

  The water supply unit 107 is formed of a tank made of borosilicate glass and having only one opening, and a dropping nozzle 112 attached to the opening of the tank. This tank is held by a holder 108 attached to the column 102. The dripping nozzle 112 is formed of a silicon stopper 113 that fits into the opening of the tank and a metal nozzle 114 that fits into the silicon stopper 113. An air supply hole 115 is formed on the side surface near the lower end of the nozzle.

    In this coffee brewing apparatus, 560 ml of water is put in the water supply unit 107 and set on the support 102. The water in the water supply unit 107 flows into the water reservoir 106, but as this inflow progresses, the upper space in the water supply unit 107 becomes low pressure, and the water is inserted into the water reservoir 107 so that the nozzle hole of the water supply unit 107 is inserted. Inflow to the water reservoir 106 stops at an appropriate position beyond 115.

  Thereafter, the cock of the water reservoir 106 is opened and water drops are dropped into the filtration device 1. When the water level in the water reservoir 106 decreases and the water level falls below the position of the nozzle hole 115, air enters the tank through the hole 115, the atmospheric pressure in the tank space becomes atmospheric pressure, and the water reservoir 106 again. Water flows into the inside. Water droplets from the nozzle permeate from the surface of the coffee powder and are filtered by the filter unit to accumulate the coffee liquid in the receiving container 104.

  In the drained coffee extraction apparatus 101 shown in FIG. 7, since the thing with the wide opening of the both ends of the main body 2 of the filtration instrument 1 is used, it becomes easy to wash | clean and it is hard to break. In addition, since the filtering material 4 of the filtering device 1 is configured by the filter portion 9 and the support material 10, the filtering material 4 can be firmly attached to the frame material of the filtering device body 2 via the support material 10. There is no risk of receiving coffee powder and dropping it into the container 104 during extraction. Therefore, it is possible to prevent the coffee powder already extracted or extracted from being mixed in the coffee extracted in the receiving container 104, and the taste of coffee is not impaired.

  In the above embodiment, the coffee extracted with the water supplied into the filtering device is dropped into the receiving container. However, the filtering device is inserted deeper into the receiving container, and the hot water that can be placed in the receiving device. Tea or black tea can be extracted by soaking in the water.

It is a partial section lineblock diagram showing roughly an example of a filtration instrument of the present invention. FIG. 2 is a partial cross-sectional configuration diagram illustrating an enlarged frame material portion of the filtration device illustrated in FIG. FIG. 2 is a partial cross-sectional configuration diagram showing an enlarged filter material portion shown in FIG. It is a top view at the time of seeing the filter material in the other example in the filtration apparatus of this invention from the lower side. It is a sectional side view of the filter material shown in FIG. It is a side view of the filter material shown in FIG. It is a partial section lineblock diagram showing an example of the draining coffee extraction device of the present invention.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Filtration instrument, 2 ... Filtration instrument main body, 3 ... Frame body, 4 ... Filter material, 5 ... 1st reduced diameter part, 6 ... 2nd reduced diameter part, 7 ... Flange part, 8 ... Holding part, 9 ... filter part, 10 ... support material, 11 ... branch part

Claims (7)

A filtering device equipped with a filtering material used in an apparatus for extracting coffee by dripping water from a nozzle of a water reservoir,
The filtration instrument has a cylindrical filtration instrument body formed by opening both end portions in the length direction and forming a reduced diameter portion in the vicinity of the lower end opening ,
A frame body provided fitted in the lower end in the longitudinal direction of the filtration device body,
A filter medium incorporated in the frame body and provided so as to close the opening of the filtration instrument body , the frame body having a cylindrical shape with both ends opened and a flange portion formed at the upper end opening, A filtration instrument, wherein when the frame is fitted to the filtration instrument body, the flange portion protrudes from the reduced diameter part of the filtration instrument body . The filtration device according to claim 1, wherein the frame is made of silicon. The said frame body comprised the said filter material so that attachment or detachment was possible, The filtration instrument of Claim 1 or 2 characterized by the above-mentioned. The straining member includes a supporting member for fixing and supporting relative to the frame, characterized in that it comprises a filter portion having a straining function is continuous with the supporting member, any one of claims 1 to 3 The filtration apparatus as described in one. The filtration device according to any one of claims 1 to 4, wherein the filtering material is configured so that the filter portion is recessed downward . The branching portion extending toward the center of the filtering material is formed in the support material when the filter portion is formed so as to be recessed downward . Filtration equipment.   A filtration device provided with a filtering material is placed on the upper part of the receiving container, a water reservoir portion provided with a water dropping nozzle is disposed above the filtration device, and coffee powder is put into the filtration device to add the dropping nozzle. In the drained coffee extraction device that extracts the coffee liquid to the receiving container through the filtering material with the dripping water from, the filtration device according to any one of claims 1 to 6 is used as the filtration device. Water extraction coffee extraction device.

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