KR20140053555A

KR20140053555A - Pressure type drip coffee manufacuturing apparaturs

Info

Publication number: KR20140053555A
Application number: KR1020120119622A
Authority: KR
Inventors: 고석일
Original assignee: 고석일
Priority date: 2012-10-26
Filing date: 2012-10-26
Publication date: 2014-05-08

Abstract

Provided is a portable coffee making device using gas pressure which contains coffee powder inside thereof and includes: a first housing which contains hot water, which flows in through a hole formed on the bottom, up to an upper part; a second housing which is joined with the first housing and has a bottom side formed with a pressure panel; and a third housing which is joined with the first housing and the second housing and has a gas charge part of which a center portion has gas charged. The gas charge part is characterized by it is separated from the second housing in the vertical direction by pressure of the gaseous diffusion generated by heat energy of the hot water which flows in and then it releases the hot water contained in the first housing through the hole.

Description

[0001] Pressure type drip coffee manufacuturing apparaturs using gas pressure [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coffee making apparatus, and more particularly, to a portable coffee making apparatus using gas pressure.

Generally, coffee beverages made using coffee beans are divided into instant coffee and coffee beans.

The coffee beans are divided into drip type and espresso depending on the extraction method from coffee beans.

Especially espresso is a very dark Italian coffee known as Italian authentic coffee that drinks coffee extracted from air with Demtasse. Compressed air extracts coffee in a short period of time, so there is less caffeine and you can feel the pure taste of coffee.

Espresso 's English expression' Express' is used to mean 'fast'. Usually, coffee is extracted with an espresso machine. The apparatus for extracting espresso coffee includes a potter filler for extracting coffee using ground coffee beans, a boiler for supplying hot water, and a pump for supplying hot water to the coffee beans. The machine was invented in 1906, extracting 30 ml of coffee in 20 seconds at a pressure of about 9 atmospheres and a temperature of around 90 ° C.

The beans need to be finely ground three times more than when using a drip type machine. The factors that determine the taste of espresso are the thickness and volume of the bean, the pressure and the falling speed.

So to get an espresso, you have to go to a coffee shop. Nowadays there is an espresso machine that you can drink easily at home or at a company, but it costs to buy espresso machine and capsule coffee. In addition, since disposable espresso machines are sold, it is possible to carry them, but the inconvenience of having to carry the machine still exists.

On the other hand, a coffee squeeze extracting apparatus used in a disposable powder coffee pack which is a public utility model publication 20-2009-0004335 is used in a disposable powdered coffee pack which puts a disposable powdered coffee pack into a pressed squeezer and squeezes and extracts coffee with hot water and pressure The present invention relates to a coffee squeezing and extracting apparatus, and more particularly, to a coffee squeezing and extracting apparatus used in a disposable powdered coffee pack in which coffee can be easily squeezed out even when only a nonwoven fabric is attached to a lower portion of the disposable powdered coffee pack, The publication 10-2011-0130291 discloses a beverage bottle with a one-piece cup, which is attached to the beverage bottle. Specifically, the cup is attached to the bottom of the beverage bottle to provide convenient, cost-saving, As in the invention relating to the combination of a beverage bottle and a cup that can reduce resource waste and environmental pollution due to the use of disposable containers, , It is provided with an additional device.

Accordingly, the present inventors have developed a disposable pressure coffee device capable of enjoying only espresso by using high pressure, and to provide a portable coffee making device using gas pressure capable of producing espresso by the pressure in the product by putting only hot water into the device do.

A problem to be solved by the present invention is to provide a portable coffee manufacturing apparatus using gas pressure capable of easily producing coffee beans (for example, espresso) for anyone of all ages, regardless of time or place.

It is another object of the present invention to provide a portable coffee manufacturing apparatus using gas pressure that can produce the same coffee bean as coffee bean coffee sold at a specific location with low cost.

According to another aspect of the present invention, there is provided an apparatus for manufacturing portable coffee using gas pressure, comprising: a first housing accommodating coffee powder therein, the first housing receiving hot water flowing through a hole formed in a bottom surface thereof to an upper portion; A second housing coupled to an upper portion of the first housing and having a bottom surface formed of a pressure plate; And a third housing coupled to the first housing and the second housing and having a gas charging part filled with gas at a central part thereof, wherein the gas charging part is configured to generate a gas diffusion pressure And the hot water accommodated in the first housing is discharged through the hole while being separated from the second housing in a direction perpendicular to the second housing.

The first housing is provided with a protruding portion protruding to a predetermined space on a bottom surface thereof and the hole is formed on the bottom surface of the protruding portion and the hole has a ball having a diameter smaller than a vertical height of the protruding portion .

And the hole is smaller than the diameter of the ball.

The second housing is fixed to the upper side of the first housing, and includes a metal thin film formed on the lower surface, and a fastening portion fastened to the first housing formed on the upper surface of the metal thin film.

The metal thin film and the fastening portion may be formed,

And a rubber film is provided on the side edge.

And the rubber film acts as a stopper for the air outlet formed on the side surface of the first housing.

The upper surface of the second housing is characterized in that a plurality of fastening holes are formed at regular intervals.

And the third housing has a fastening hole to be fastened to an upper outer surface of the first housing and a fastening hole formed on an upper surface of the second housing.

Wherein the gas charging unit is filled with one of HFC, CFC, Freon gas, butane gas, ammonia, alcohol, and methane.

And the pressure plate is formed of a flexible metal material.

The lower surface of the first housing is provided with a paper filter.

According to another aspect of the present invention, there is provided an apparatus for manufacturing a portable coffee using a gas pressure, the apparatus comprising: a propellant gas filling unit for generating a pressure in the height direction by the propellant gas, A first housing (200); A space in which coffee powder and water can be mixed is formed inside the first housing 200, a paper filter is installed to surround the bottom surface of the first housing 200, And a second housing 300 including an injection port for injecting the propellant gas into the first housing 200. The first housing 200 includes a pouch 260 which is inflated in a height direction by injecting the propellant gas.

The first housing 200 includes an upper cap 210 formed in a disk shape; A first fixing part 220 fastened to the lower part of the upper cap 210, the upper part being hermetically sealed, the lower part being opened, and the inner side surface being formed with a whirl protrusion part; A second fixing part 230 having a whirl protrusion formed on an outer side thereof to be engaged with the whirl protrusion and fastened to the first fixing part 220; A gas charging part 240 rotatably mounted on an upper end surface and a side surface of the first fixing part 220 and inserted into the second fixing part 230; And a lower cap 250 having a protrusion formed on an outer surface thereof so as to be coupled with an inner side of a lower portion of the gas charging part 240. A hole is formed in the lower surface of the second fixing part 230, To support the lower cap (250).

The pouch 260 is formed in a pneumatic form capable of injecting air into the pouch 260, and a gas diffusing gas in the first housing 200 is formed in the first housing 200 so that the gas is diffused, And is mounted on the lower portion of the housing 200.

The second housing (300) is characterized in that a plurality of air outlets are formed in the upper side of the side.

The propellant gas may be one of HFC, CFC, Freon gas, butane gas, ammonia, alcohol, and methane.

And the propellant gas is a gas which generates a set internal pressure at a temperature of 90 ° C or higher.

According to the present invention, a user can easily use coffee beans (e.g., espresso) without being sought at a place and time that they desire, and can easily manufacture coffee beans (e.g., espresso) like a conventional disposable coffee mix There is an advantage to be able to.

In addition, coffee beans (espresso) are produced only through a specific coffee shop or through a specific machine, but the apparatus of the present invention is industrially applicable because it can be mass-produced at low cost.

1 is a view illustrating an apparatus for manufacturing portable coffee using gas pressure according to a first embodiment of the present invention.
2 to 3 are sectional views for explaining the operation of the portable coffee manufacturing apparatus shown in FIG.
4A and 4B are views illustrating an apparatus for manufacturing portable coffee using gas pressure according to another embodiment of the present invention.
5 is an exemplary view showing a stereoscopic view of the first housing shown in FIG. 4A.
6 is an exemplary view showing a cross-sectional view of the first housing shown in FIG.
FIGS. 7 to 8 are sectional views for explaining the operation process of the portable coffee manufacturing apparatus shown in FIG. 4A.
9 is an exemplary view showing a structure in which the lower end of the portable coffee manufacturing apparatus is shaped like a frame.
10 is an exemplary view showing a portable coffee manufacturing apparatus designed in a drip type, which is a fourth embodiment of the present invention.
FIG. 11 is an exemplary view showing a portable coffee making apparatus designed in a cup-mouth-mounting type, which is a fifth embodiment of the present invention.
12 is an exemplary view showing a portable coffee manufacturing apparatus designed in a submerged form according to a sixth embodiment of the present invention.
13 and 14 are views showing an example of a portable coffee manufacturing apparatus designed as a cup-integrated type, which is a seventh embodiment of the present invention.
Figs. 15 and 16 are diagrams illustrating an example of a portable coffee manufacturing apparatus designed in an integrated form, which is an eighth embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a detailed description of preferred embodiments of the present invention will be given with reference to the accompanying drawings. In the following description of the present invention, detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

Embodiments in accordance with the concepts of the present invention can make various changes and have various forms, so that specific embodiments are illustrated in the drawings and described in detail in this specification or application. It is to be understood, however, that it is not intended to limit the embodiments according to the concepts of the present invention to the particular forms of disclosure, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

It is to be understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, . On the other hand, when an element is referred to as being "directly connected" or "directly connected" to another element, it should be understood that there are no other elements in between. Other expressions that describe the relationship between components, such as "between" and "between" or "neighboring to" and "directly adjacent to" should be interpreted as well.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In this specification, the terms "comprises ",or" having ", or the like, specify that there is a stated feature, number, step, operation, , Steps, operations, components, parts, or combinations thereof, as a matter of principle.

Hereinafter, the present invention will be described in detail with reference to the drawings.

As shown in FIG. 1, an apparatus 600 for manufacturing portable coffee using gas pressure according to an embodiment of the present invention includes first to sixth housings 630 to 620.

The first housing 630 is cylindrical and is designed to receive coffee powder therein and to receive the hot water flowing through the holes 650 formed in the bottom surface up to the top.

The second housing 644 is fastened to the upper portion of the first housing 630, and the bottom surface of the second housing 644 is formed as a pressure plate 645.

The third housing 620 is coupled to the first housing 630 and the second housing 644 and includes a gas charging part 640 filled with a gas at a central portion of the third housing 620. The gas charging part 640, The hot water stored in the first housing 630 is discharged through the holes 650 by being diffused in a direction perpendicular to the second housing 644 due to gas diffusion generated through thermal energy supplied from the hot water flowing in the first housing 630. [ .

More specifically, the first housing 630 has a protrusion (not shown) protruding to a predetermined space on a bottom surface thereof, the hole 650 is formed on the bottom surface of the protrusion, The ball 655 having a smaller diameter than the vertical height of the projection can be fastened.

At this time, the ball peripheral portion is formed with a circular water outlet cap so as to cover the water outlet, and the water outlet cap may be formed of a plastic material. The ball 655 functions as a pressure control stopper. When the pressure exceeds a certain level by using the physical property, the ball 655 is separated from the material having a low tensile force to discharge the water.

The upper surface of the first housing 630 may be formed in a protruding shape and the air outlet 641 may be formed on the protruding side of the first housing 630 to form a hole 650 formed in the bottom surface of the first housing 630. [ So that water flowing into the first housing 630 can smoothly flow into the first housing 630.

Further, a protrusion is formed on an upper side surface of the first housing 630, and is engaged with the third housing 620.

The lower surface of the first housing 630 is provided with a paper filter 631 in which coffee powder is received.

The second housing 644 is fixed to the upper side surface of the first housing 630 and includes a metal thin film 641 formed on the lower surface thereof and a third thin film transistor 641 fastened to the third housing 620 formed on the metal thin film 641 And is designed to include a fastening hole 642.

The second housing 644 is provided with a circular rubber ring 625 on its side edge so that the second housing 644 moves downward to block the air outlet of the first housing 630 . A more detailed description is given below.

The upper surface of the second housing 644 is formed with a plurality of fastening holes formed at regular intervals and engaged with fastening holes 621 formed in the third housing.

More specifically, each of the plurality of fastening holes 642 may be an elliptically curved hole, and may be formed in the shape of a numeral "9 ".

The third housing 620 has a fastening hole 621 fastened to the upper outer surface of the first housing 630 and the fastening hole 642 formed on the upper surface of the second housing 644, The holes 642 and the fastening holes 621 are fastened to each other by the rotation of the third housing 620.

The third housing 620 is provided with a gas charging unit 640. The gas charging unit 640 is filled with any one of HFC, CFC, Freon gas, butane gas, ammonia, alcohol, do.

Hereinafter, the operation of the apparatus for manufacturing portable coffee using gas pressure according to the first embodiment of the present invention will be described.

First, the portable coffee manufacturing apparatus 600 is inserted into the cup in the water-filled cup. The water gradually flows inward through the holes 650 formed in the bottom surface of the portable coffee machine 600. When the inflow water contacts the bottom surface of the third housing 620, the propellant gas is supplied with the thermal energy into the gas filling part 640 provided inside the third housing 630 to perform the gas diffusion process, The second housing 644 is disengaged from the third housing 620 through the pressure to move downward and the coffee raw material mixed therein is discharged through the hole 650 formed in the lower surface of the first housing 630 .

FIG. 4 is a view illustrating an apparatus for manufacturing portable coffee using a gas pressure according to a second embodiment of the present invention, FIG. 5 is an exemplary view showing a stereoscopic view of the first housing shown in FIG. 5 is a cross-sectional view of the first housing shown in FIG. 5, and FIGS. 7 to 8 are sectional views for explaining the operation of the portable coffee making apparatus shown in FIG.

As shown in FIG. 4, the portable coffee manufacturing apparatus 500 of the second embodiment of the present invention includes a first housing 200 and a second housing 300.

The first housing 200 is filled with propellant gas, and generates a certain pressure in the height direction by the propellant gas due to heat provided from the outside.

The second housing 300 is integrally formed with the first housing 200 and has a space in which coffee powder and water can be mixed. A paper filter is installed to surround the bottom of the second housing 300. And a water inlet for injecting water injected from the outside into the surface.

The first housing 200 includes a pouch 260 that receives the propellant gas and expands in a height direction.

The first housing 200 includes an upper cap 210, a first fixing part 220, a second fixing part 230, a gas charging part 240, and a lower cap 250.

The upper cap 210 is formed in a disk shape.

The first fixing part 220 is fastened to the lower part of the upper cap 210, the upper part is closed, the lower part is opened, and a whirl protrusion is formed on the inner side.

The second fixing part 230 is formed on the outer side with a whirling protrusion so as to be coupled with the whirling protrusion, and is fastened to the first fixing part 220.

The gas charging unit 240 is rotatably mounted on the upper end surface and the side surface of the first fixing unit 220 and inserted into the second fixing unit 230.

The lower cap 250 is protruded on the outer side so as to be coupled with the inner side of the lower part of the gas charging part 240.

Here, a hole is formed in the lower surface of the second fixing part 230, and a rubber ring is formed on the rim of the hole to support the lower cap 250.

The pouch 260 is formed in the form of a balloon or a pouch capable of injecting air into the inside of the pouch 260, and a gas diffusing gas in the first housing 200 is formed in a space And is mounted on the lower portion of the first housing 200.

The second housing 300 may have a plurality of air outlets formed on the upper side thereof. The propellant gas may be any one of HFC, CFC, Freon gas, butane gas, ammonia, alcohol, and methane.

Accordingly, when the portable coffee manufacturing apparatus according to the second embodiment is received in the cup filled with water, the water flows into the second housing 300 through the injection port provided on the lower surface of the second housing 300. The inflow water is gradually filled up to the upper surface of the first housing 200.

At this time, the gas contained in the gas filled portion 240 in the first housing 200 receives heat from the hot water and expands, pushing the lower cap 250 downward.

At this time, the lower cap 250 is detached from the second fixing part 230, and the gas diffused into the pouch through the gap generated while being separated flows into the pouch.

The pouch that expands through the inflowing gas pushes the coffee water contained in the second housing 300 downward to discharge the coffee water contained in the second housing to the outside of the inflow port.

Here, the portable coffee manufacturing apparatus according to the second embodiment is operated through the process of rotating the first housing in use.

More specifically, when the user rotates the first housing, a whirl protrusion is formed on the inner or outer side so that the first fixing part and the second fixing part provided in the first housing are engaged with each other, so that they can be rotated.

The gas filling portion fixed in the upper first fixing portion is rotated in the same direction as the rotation direction of the first fixing portion and the lower cap fastened to the lower portion of the gas filling portion is provided with a protrusion protruded to the side so as to be fixed to the second fixing portion . At this time, the inner side surface of the gas filled portion is formed with a groove in the height direction. Thereafter, when the projecting portion of the lower cap is caught by the groove according to the rotation of the first fixing unit, it is time to accommodate the portable coffee manufacturing apparatus in the cup.

The first housing described in the first embodiment and the second housing 300 described in the second embodiment may be formed as a frame model described in FIG.

The frame mold has a structure in which a curtain film and a mold frame are provided at the lower ends of the first housing of the first embodiment and the second housing of the second embodiment, and the curled film specially serves as a support for supporting the filter membrane The filter membrane is fixed to the gap between the membrane and a predetermined hole is formed at the center of the upper surface, and a paper filter is formed to surround the inner surface of the hole.

This structure is such that when water is injected from above or below, a clearance is formed due to the property of the filter membrane to the water, and the water is filled in the gap. When the water filling is completed, the pressure is generated in the downward direction, and the gap between the grooves is closed by the pressure.

Thereafter, when the cap is opened in a sealed state or above a certain internal pressure, coffee is discharged at an appropriate pressure at which the espresso is produced as a water outlet.

For reference, the air is designed to escape from the membrane and designed to float on the water to be filled.

When the frame model is combined with the second embodiment, when water is injected into the upper surface of the upper cap 210 of the first housing 200, the gas propulsion unit, which receives heat from the injected hot water, When the liquid is diffused and operated, the pouch expands due to vaporization and expansion of the liquefied gas, and an internal pressure suitable for the espresso is generated.

At this time, the water remaining on the upper cap 210 is a structure for maintaining the temperature of the water by separating the heat absorbed in vaporization from the water used in the production of coffee, that is, it functions as a temperature protection effect of water.

In the third embodiment of the present invention, a spring is provided in the gas charging unit commonly provided in the first and second embodiments.

For example, the shape of the gas-filled part can be designed to use a spring or a gas-filled part that covers and seals the periphery of the skeleton so that the pressure can be utilized by using a spring or a combination of compressed air or other expanding chemicals.

Assuming that a = steam expansion force, b = spring pressure, c = tensile strength of the safety loop (required internal pressure), d = expansion force of compressed air or other chemicals, , a + b <c, and a + b + d <c, respectively, after the design is made to be inoperative. You can change the design to make it work.

In operation a + b = internal pressure (excluding the water and the weight of the plate and other loss of energy), so that the internal pressure can be designed to be the most suitable pressure for the production of espresso.

Hereinafter, an embodiment of another type of portable coffee making apparatus will be described with a brief description.

FIG. 10 is a view illustrating an apparatus for manufacturing portable coffee according to a fourth embodiment of the present invention, and FIG. 11 is an exemplary view illustrating a portable coffee making apparatus designed in the form of a cup-in- FIG. 12 is an exemplary view showing a portable coffee manufacturing apparatus designed in a submerged form according to a sixth embodiment of the present invention. FIGS. 13 and 14 are views showing an example of a portable coffee manufacturing apparatus designed in a cup- And FIGS. 15 and 16 are views showing an example of a portable coffee manufacturing apparatus designed as an integral type, which is an eighth embodiment of the present invention.

The fourth embodiment of the present invention can be designed in a drip shape.

When the water is injected from above, the pressure cups and the water are introduced into the cups in such a manner that the cups are mounted on the cups and the water is filled therein by pouring the hot water from above, as described in the first and second embodiments of the present invention. The separation and the water injection process can be simplified so that the lower part of the pressure coffee making apparatus can be made only to discharge water, and thus the coffee tapping problem can be essentially solved.

The fifth embodiment of the present invention can be designed in the form of a cup-in-the-mouth type.

When the water is injected from above, the cup may be configured to operate in such a manner that the cup is placed on top of the pressurized coffee making apparatus disclosed in the first and second embodiments of the present invention and poured hot water from above to fill the water therein .

The sixth embodiment of the present invention can be designed in a submerged form.

As long as the water is injected downward, the longevity form of the sixth embodiment is operated in such a manner that water is filled in the cup and the coffee barrel is put in the cup or the coffee barrel is poured in the cup and water is poured thereon .

With the sixth embodiment, there is an advantage that the coffee making process is convenient, and viewing elements and manufacturing elements are generated, and culture elements can be generated.

The seventh embodiment of the present invention can be designed in a cup-integrated form.

The cup-integrated type of the seventh embodiment can be largely divided into a case in which water is injected from above and a form in which water is injected from below.

(a), when water is injected from the bottom, it is inserted into the cup and is made in a shape similar to that of the drip type described above.

(b), when the water is injected from above, it may be inserted into the cup, and the water injected from above may be received in the water inlet and discharged through the water outlet formed at the lower end.

Therefore, although it is consistent with all parts, it is advantageous that the pressure coffee making device is already integrated with the cup, so that the process is not necessary and the cup is not needed.

The eighth embodiment of the present invention can be designed as an integral type.

In the integrated type of the eighth embodiment of the present invention, the submerged coffee barrel is contained in the barrel, and when the water is injected into the barrel, the coffee is made by submerging in the barrel and the barrel is designed to be used again.

This form can be the most suitable form for making only the espresso, the hygienic part.

Accordingly, the present invention relates to a portable coffee making apparatus using gas pressure, and can be used in a place where the user desires coffee beans (for example, espresso) more easily and at a time, and can be used as a disposable coffee mix There is an advantage that anyone can easily produce coffee beans (e.g., espresso).

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention.

200, 630: first housing
260: Pouch
210: upper cap
220: first fixing unit
230: second fixing portion
240, and 640:
250: Lower cap
300, 644: second housing
500, 600: portable coffee making equipment

Claims

A first housing for accommodating coffee powder therein, wherein the first housing receives hot water flowing through the holes formed in the bottom surface to the upper portion;
A second housing coupled to an upper portion of the first housing and having a bottom surface formed of a pressure plate; And
And a third housing coupled to the first housing and the second housing and having a gas charging portion filled with gas at a central portion thereof,
The gas-
And the hot water contained in the first housing is discharged through the hole by being released in a direction perpendicular to the second housing by the gas diffusion pressure generated through the thermal energy of the hot water flowing in. Manufacturing apparatus.

The method according to claim 1,
The first housing includes:
Wherein the protruding portion protrudes to a predetermined space on the bottom surface, the hole is formed on the bottom surface of the protruding portion, and the hole includes a ball having a diameter smaller than a vertical height of the protruding portion. Manufacturing apparatus.

3. The method of claim 2,
The hole
Wherein the diameter of the ball is smaller than the diameter of the ball.

The method according to claim 1,
The second housing includes:
And a fastening part fixed to the upper side of the first housing, the fastening part fastened to the first housing formed on the upper part of the metal foil, the metallic thin film being formed on the lower surface.

5. The method of claim 4,
The metal thin film and the fastening portion may be formed,
And a rubber film is provided on a side edge of the bag.

6. The method of claim 5,
The rubber film may be,
And the air outlet formed in the side surface of the first housing serves as a stopper.

6. The method of claim 5,
The upper surface of the second housing
Wherein a plurality of fastening holes are formed at regular intervals.

The method according to claim 1,
The third housing may include:
And a fastening hole to be fastened to the upper outer side surface of the first housing and the fastening hole formed on the upper surface of the second housing.

The method according to claim 1,
The gas-
Wherein the inside of the container is filled with any one of HFC, CFC, Freon gas, butane gas, ammonia, alcohol, and methane.

The method according to claim 1,
Wherein the pressure plate comprises:
Wherein the atmospheric pressure is formed of a flexible metal material.

The method according to claim 1,
And a lower surface of the first housing,
Wherein a paper filter is provided on the surface of the base material.

A first housing filled with propellant gas therein to generate a constant pressure in the height direction by the propellant gas by heat provided from the outside;
A space for mixing coffee powder and water is formed inside the first housing, a paper filter for enclosing the bottom surface of the space, and an inlet port And a second housing,
The first housing includes:
And a pouch that receives the propellant gas and expands in a height direction.

13. The method of claim 12,
The first housing includes:
An upper cap formed in a disk shape;
A first fixing part which is fastened to the lower part of the upper cap, the upper part is closed, the lower part is opened, and a whirlpool protrusion is formed on the inner side;
A second fixing part formed with a whirl protrusion so as to be coupled with the whirl protrusion on the outer side and fastened to the first fixing part;
A gas charging unit rotatable on an upper end surface and a side surface of the first fixing unit and configured to be inserted into the second fixing unit;
And a lower cap having protrusions formed on an outer surface thereof so as to be coupled with an inner side of a lower portion of the gas charging unit,
Wherein a hole is formed in the lower surface of the second fixing part, and a rubber ring is formed at an edge of the hole to support the lower cap.

13. The method of claim 12,
Wherein the pouch comprises:
Wherein the first housing is formed in the form of a bulb capable of injecting air therein, and a gas diffusing in the first housing is mounted to the lower portion of the first housing so as to have a large space in the second housing. A portable coffee making apparatus using the same.

13. The method of claim 12,
The second housing (300)
Wherein a plurality of air outlets are formed in an upper portion of the side surface.

14. The method of claim 13,
The propellant gas,
HFC, CFC, Freon gas, butane gas, ammonia, alcohol, and methane.

17. The method of claim 16,
The propellant gas,
Wherein the internal pressure is set at a temperature higher than 90 占 폚.