JPH0328850Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention includes a coffee storage section in which coffee powder is sealed at the bottom of a hot water reservoir, and allows hot water poured into the hot water reservoir to pass through the coffee storage section. This invention relates to a coffee filter that extracts coffee liquid by passing it through it.

[Conventional technology]

A drip-type coffee filter is equipped with a storage section for enclosing coffee powder at the bottom of the hot water container, and the hot water stored in the hot water container is passed through this storage section to obtain coffee liquid directly into a coffee cup. For example, it is known from Publications No. 52-46630 and No. 59-40911.

This coffee filter has filters installed above and below the body of the coffee storage section, and the required amount of coffee powder is placed between the filters, and the hot water stored in the hot water reservoir is passed through the filters to extract the coffee components from the coffee powder. It is designed to extract water, and is usually thrown away after one use.

These filters can be divided into two types: those in which the coffee storage part is integrated with the hot water container, as seen in the conventional example mentioned above, and those in which the coffee storage part is separate and can be freely attached and detached. In either case, the storage section has a sealed structure to prevent coffee powder from leaking out, and hot water and air can only enter and exit through filters placed above and below.

However, in order to extract the coffee liquid in this coffee filter, hot water must be passed through the storage section, but during this permeation, the air that was previously in the storage section blocks the inflow of hot water, preventing smooth filtration. There were cases where coffee liquid could not be extracted quickly due to interference.

The impediment to the entry of hot water is not only due to the previously sealed air, but also due to the gas generated when hot water comes into contact with the coffee powder filling the storage space.

[Problem that the invention attempts to solve]

In this invention, the existence of the air sealed in this storage part or the gas generated when the hot water comes into contact with the coffee powder prevents the hot water from entering through the filter, resulting in smooth filtration. This was researched and developed in order to improve this problem.

That is, the present invention effectively extracts the air trapped in the coffee storage section when the filter is installed, or the gas generated by the contact between hot water and coffee powder, and smoothes the intrusion of hot water through the filter. The present invention aims to provide an improved coffee filter that facilitates contact between hot water and coffee powder, enables uniform extraction of coffee components, and can be expected to perform rapid filtration.

[Means for solving problems]

In view of the above-mentioned purpose, the present invention provides a ventilation hole along the periphery of the upper filter that is fixed to the upper edge of the body of the storage section, and through this ventilation hole generates air from the internal air or coffee powder. to release gas,
The purpose is to achieve prompt filtration without interfering with the permeation of hot water entering through the filter.

In addition, the hot water stored in the hot water reservoir is guided into the coffee storage section through the ventilation hole provided on the upper edge of the body, allowing for more rapid contact with the coffee powder and efficient extraction of coffee liquid. Our goal is to provide a coffee filter that achieves this goal.

Hereinafter, this invention will be explained with reference to illustrative embodiments, and other features will be made clear.

〔Example〕

The embodiment shown in the drawings is an example of a removable coffee filter in which the coffee storage part is molded separately from the hot water container and the coffee storage part is combined with the hot water container during use. , 1st
2 is a partially cutaway plan view of the main part, and FIG. 3 is a partially enlarged longitudinal cross-sectional view of the main part showing the inflow state of hot water.

Reference numeral 1 in the drawing is a coffee storage section formed separately from the hot water reservoir 2, 3 is the body of the storage section 1,
Reference numeral 4 denotes an upper filter stretched over the upper edge of this body, and 5 denotes a lower filter 6 stretched over the lower part of the body, which is the coffee powder stored between the upper and lower filters. Incidentally, in the figure, the hot water reservoir 2 is shown with a two-dot chain line together with the coffee cup 7 to distinguish it from the coffee storage section 1 and for clarity.

The coffee storage section 1 shown here is made of synthetic resin, and has a stepped section 8 at the lower end of the body section 3.
A lower filter 5 is stretched over the upper surface of this step. A bottom plate 9 is provided at a narrow interval below this stepped portion so that the entire body forms a dish shape, and a reservoir chamber 10 for storing filtered coffee liquid is provided between this bottom portion 9 and the lower filter 5. established,
The bottom plate 9 has a small hole 11 for dripping the collected coffee liquid.
is provided.

The upper edge of the storage part, that is, the upper edge of the body part 3, is formed into a horizontal plane by the overhang of the collar 12, and an annular fastening protrusion is provided in the center of this horizontal plane so as to surround the upper end opening of the body. 13 is provided in a protruding manner, and the upper filter 4 is stretched through this protrusion.

Reference numeral 14 denotes ventilation holes formed by cutting the annular fastening protrusion 13 at intervals;
By fixing the upper filter 4 along the upper edge of the storage section 1, a ventilation hole opens laterally, and the inside and outside of the storage section 1 are communicated with each other.

Reference numeral 15 denotes an obstacle wall raised in an annular shape along the stepped portion 8 provided at the lower end of the body portion 3.

The obstacle wall 15 is spaced apart from the inner wall of the body part 3 and has a groove 16 formed therein, and is formed to a height that reaches approximately the center of the height of the interior of the storage part 1, as will be described later. The hot water flowing through the ventilation hole 14 is temporarily stored in the groove 16, and then the obstacle wall 1
The coffee powder 6 can be poured into the center filled with coffee powder 6.

The coffee storage section 1 constructed in this way has a body section 3 with a bottom formed from synthetic resin, and then a lower filter 5 is stretched along the top surface of the stepped section 8, thereby creating a space between the bottom plate 9 and the bottom section 3. A storage chamber 10 is formed, and then a required amount of coffee powder 6 is filled, and the upper filter 4 is stretched along the fixing protrusion 13 provided on the upper surface of the collar 12 to seal in the coffee powder 6 and close the storage section. Finalize.

Although the filters 4 and 5 may be fixed using an adhesive, in this embodiment they are fixed to the body 3 by heat fusion.

Incidentally, since the coffee powder 6 stored between the upper and lower filters will swell with the hot water poured later, a required amount of air is prepared in advance between the upper and lower filters 4 so that air can enter there. become.

Now, in actual use, the coffee storage section 1 configured as described above is formed into a cup shape as shown in the figure, and is dropped from above into a hot water reservoir 2 having a cylindrical mounting section 2a at the bottom. The coffee filter is completed by fitting it into part 2a. Then, use this filter as a coffee cup 7 in the same way as a conventional filter.
After completing the setting, place the hot water container 2 on the
Pour boiling water into the cup and wait for the coffee liquid to be extracted.

In the present invention, the hot water poured into the hot water reservoir flows into the storage part 1 through the upper filter 4 as in the conventional filter, and at the same time, a fixing protrusion 13 is cut along the upper edge of the filter. It will flow through the vent hole 14 and moisten the coffee powder 6. In conjunction with this inflow of hot water, the air inside the storage compartment escapes outside using the vent hole 14 as a priority passage without passing through the pores of the narrow filter 4, forming air bubbles and discharging the hot water in the hot water storage container. released through the inside.

Similar to this release of air, gas generated when hot water comes into contact with the coffee powder is also released through the ventilation holes 14 without remaining in the storage section 1, thereby helping the hot water to penetrate.

On the other hand, the hot water flowing through the upper filter 4 falls directly onto the coffee powder and moistens it.
The hot water flowing through the vent hole 14 of the fastening ridge 13 flows down along the inner wall surface of the body 3 and enters the storage section. And here, the flowing hot water is the obstacle wall 1
The coffee powder is temporarily stored in the groove 16 formed by the rise of the coffee powder 5, and after being filled therein, it overflows the obstruction wall 15 and flows into the coffee powder stored inside the storage part, moistening it.

The hot water from which the coffee components have been extracted by contact with the hot water, that is, the coffee liquid, is filtered by the lower filter 5, stored in the reservoir 10, and collected through the small hole 11 into the coffee cup 7 received below.

FIG. 4 shows the upper filter 4 in the above embodiment.
A fastening protrusion 13 was provided for fixing the filter, and a ventilation hole 14 was provided therein, but this protrusion was eliminated and the filter 4 directly above the upper edge of the flat body was fixed. This figure shows another embodiment in which ventilation holes 14 are provided by making cuts at appropriate intervals on the upper edge.

In addition, 17 in the figure is a bottom plate 9 in order to prevent the reservoir chamber 10 from being crushed due to the lower filter 5 hanging down.
It is a support stand that protrudes from the top.

[Effect of idea]

As explained above with reference to the embodiments, the coffee filter of the present invention is constructed so that when hot water flows into the coffee storage section, the air inside the coffee storage section passes through the filter, as in the case of a conventional filter. In particular, the hot water escapes through the upper filter, but this filter absorbs hot water and reduces breathability, so hot water is not released sufficiently, and therefore it stays inside the storage compartment, obstructing the inflow of hot water. This prevents the hot water from coming into contact with the coffee powder and prevents the extraction of sufficient coffee components.However, in the filter of this invention, the air inside the storage compartment is quickly released through the ventilation holes as described above. Because of this, hot water can easily penetrate, and therefore, contact with coffee powder is good, and sufficient coffee components can be extracted.

In addition, as the internal air is quickly released, hot water can easily permeate, so coffee can be filtered quickly and coffee liquid can be obtained in a short time.

Furthermore, in the filter of the present invention, after the gas is removed, the vent hole 14 becomes an inflow hole for hot water to promote its permeation and filtration, so that the desired coffee liquid can be extracted more quickly and in a shorter time. It has become a thing.

By the way, in the present invention, the obstacle wall 15 provided in the storage section allows the hot water that has flowed in through the ventilation hole 14 to flow down along the inner wall of the body section 3 and reach the filter 5 below, where it is essentially converted into coffee powder. It prevents coffee powder from flowing out without contact, guides it to the center of the storage section filled with coffee powder 6, and ensures contact with it, which is extremely effective in extracting the ingredients. It is becoming.

Furthermore, in the embodiment described above, the present invention was explained with respect to a removable filter that is used by separately assembling the coffee storage section 1 and the hot water reservoir 2. It goes without saying that the present invention can be applied to a filter that is integrated with the storage section 1, that is, a filter that has the coffee storage section integrated with the bottom of the hot water container.

Furthermore, in the above embodiment, the bottom of the body 3 is closed with a bottom plate 9 to form a reservoir chamber 10 between it and the filter 5 below, but the provision of this bottom plate 9 is not an essential requirement for the present invention. Instead, the body part 3 is made into a simple cylindrical shape and filters 4 are placed above and below it.
It goes without saying that the coffee storage section 1 may be constructed by extending the coffee storage section 5.

[Brief explanation of the drawing]

The drawing shows an example of a removable coffee filter in which the coffee storage part is molded separately from the hot water container and the coffee storage part is combined with the hot water container when in use. Fig. 2 is a partially cutaway plan view of the main part, Fig. 3 is a partially enlarged longitudinal cross-sectional view of the main part showing the state of inflow of hot water, and Fig. 4 is a front view of the main part. FIG. 2 is a partially enlarged vertical cross-sectional view of a main part of the embodiment. 1... Coffee storage section, 2... Hot water container, 3
... body part, 4 ... upper filter, 5 ... lower filter, 6 ... coffee powder, 13 ... attachment protrusion, 14 ... ventilation hole.

Claims (1)

[Scope of Claim for Utility Model Registration] Upper and lower filters are attached to the upper edge and bottom of the body, and a coffee storage section in which coffee powder is sealed is provided at the bottom of the hot water container. In a coffee filter configured to extract coffee liquid by passing stored hot water through a coffee storage part, a fixing protrusion for fixing the upper filter is provided on the upper edge of the coffee storage part, and the fixing protrusion A coffee filter characterized by having ventilation holes in the rows that communicate inside and outside.