Coffee device for the preparation of espresso coffee

Abstract

The utility model relates to coffee machine technical field, especially the coffee device convenient to make espresso coffee. The utility model discloses the coffee device convenient to make espresso coffee, it includes as packing bag and cylindrical bottom cup, and bottom cup is provided with the inner chamber of top opening and its bottom wall is provided with a plurality of through -hole, the inner chamber of bottom cup is provided with coffee powder, and coffee powder and the inner wall of the inner chamber of bottom cup are in contact, and coffee powder top end surface is lower than bottom cup, packing bag has the air -tightness, and bottom cup and coffee powder are located in packing bag. The utility model reaches the effect that can ensure that the compaction degree of coffee powder is uniform and meets the expected value, and the freshness of coffee powder can keep for a long time, and it is convenient to make espresso coffee.

Description

Technical Field

[0001] This utility model relates to the field of coffee machine technology, and in particular to a coffee device that facilitates the preparation of espresso. Background Technology

[0002] CN102009802A discloses a coffee capsule for an espresso machine, comprising: a main body; a cover mounted on the main body; a first filter installed inside the cover; a second filter installed at the bottom of the main body; and coffee powder filled inside the main body. The coffee capsule for an espresso machine disclosed in CN102009802A is simple and quick to operate, avoiding the series of actions required by espresso machines, such as grinding coffee powder, loading, tamping, and cleaning coffee grounds. The coffee powder inside can be kept fresh for a long time. When brewing coffee, simply place this coffee capsule into a dedicated espresso machine; it is simple and convenient.

[0003] CN222265026U discloses an espresso machine, including a casing, a water supply mechanism, a high-temperature pressurizing mechanism, and an extraction mechanism. The casing has an installation cavity. The water supply mechanism is located within the installation cavity and is used to supply water for brewing coffee. The high-temperature pressurizing mechanism is located within the installation cavity, and its input end is connected to the output end of the water supply mechanism via a pipe. The extraction mechanism is located within the installation cavity, and its output end is connected to the output end of the high-temperature pressurizing mechanism. The extraction mechanism has a sealed cavity for containing coffee grounds. The high-temperature pressurizing mechanism pressurizes the sealed cavity and introduces high-temperature water, allowing the high-temperature water to fully contact the coffee grounds in a high-pressure environment.

[0004] The coffee capsule for the espresso machine disclosed in CN102009802A has coffee powder that cannot be compacted for a long time and will turn sour due to oxidation of the coffee powder with air. The main body cannot be recycled and reused. Utility Model Content

[0005] One objective of this invention is to solve or alleviate the aforementioned technical problems.

[0006] The present invention provides a coffee device for making Italian coffee, comprising a packaging bag and a cylindrical base cup. The base cup has an inner cavity with an opening at the top and several through holes in its bottom wall. Coffee powder is placed inside the inner cavity of the base cup, with the coffee powder abutting against the inner wall of the inner cavity of the base cup and the top surface of the coffee powder being lower than the base cup. The packaging bag is airtight, and the base cup and coffee powder are located inside the packaging bag.

[0007] The advantages of this invention are that it ensures that the compaction of coffee powder is uniform and meets the expected value, and that the freshness of coffee powder can be maintained for a long time, making it convenient for making espresso.

[0008] A further technical solution involves creating negative pressure inside the packaging bag, causing the inner wall of the bag to adhere to both the bottom cup and the coffee powder.

[0009] This technical solution ensures that the coffee powder has a uniform and desirable compaction degree, and that the compaction degree and freshness of the coffee powder can be maintained for a long time, making it easy to make espresso.

[0010] A further technical solution involves making the base cup from metal.

[0011] This technical solution facilitates the recycling and reuse of the bottom cup.

[0012] A further technical solution involves providing a top outer edge at the top of the bottom cup.

[0013] This technical solution facilitates the insertion and removal of the bottom cup from the portafilter of the coffee maker.

[0014] A further technical solution is that the packaging bag includes a front layer and a back layer; the bottom cup and coffee powder are located between the front layer and the back layer, and the part where the front layer and the back layer are joined is the joint, which is located on the outer side of the top outer edge on the same plane.

[0015] This technical solution ensures that the inner wall of the packaging bag fits snugly against both the bottom cup and the coffee powder, thereby ensuring that the compaction of the coffee powder is maintained for a long time.

[0016] A further technical solution is that, when viewed from above, the outer edge of the joint is either circular or square.

[0017] A further technical solution involves a notch at the joint that appears triangular when viewed from above.

[0018] This technical solution makes it easy to tear open the joint and remove the bottom cup and coffee powder from the packaging bag.

[0019] A further technical solution is to make the packaging bag from aluminum foil or polyethylene film.

[0020] Further technical solutions also include a pressure plate; the packaging bag is filled with an anti-oxidation gas, and the pressure plate is detachably fixed to the bottom cup and fits against the top surface of the coffee powder.

[0021] It can further ensure that the freshness of coffee powder can be maintained for a long time; the tamper can ensure that the coffee powder is in the bottom of the cup.

[0022] A further technical solution is to use nitrogen or helium as the anti-oxidation gas; the pressure plate is circular when viewed from above and is embedded in the bottom cup, with its sidewall abutting against the inner sidewall of the bottom cup; or, the middle part of the pressure plate is cylindrical and fits snugly into the bottom cup, with the top of the pressure plate extending outward and then bending inward to form a flexible U-shaped buckle. Attached Figure Description

[0023] Figure 1 This is a half-section perspective view of the coffee device for making espresso according to the first embodiment; the packaging bag 2 is not shown.

[0024] Figure 2 This is a half-sectional schematic diagram of a coffee apparatus for making espresso according to the first embodiment.

[0025] Figure 3 This is a three-dimensional schematic diagram of the coffee apparatus for making espresso according to the first embodiment. Figure 1 Arrow ARR1 indicates the approximate direction of movement of the bottom cup 1 when the bottom cup 1 containing coffee powder 3 is placed into the receiving part 91 during use.

[0026] Figure 4 This is a three-dimensional schematic diagram of the coffee apparatus for making espresso according to the first embodiment. Figure 2 .

[0027] Figure 5 This is a half-sectional schematic diagram of a coffee apparatus for making espresso according to the second embodiment.

[0028] The accompanying drawings in the specification that best illustrate the technical features of this utility model are: Figure 2 .

[0029] Arrow 1 ARR1; Base cup 1; Through hole 11; Top outer edge 12; Packaging bag 2; Front layer 21; Back layer 22; Joint 23; Coffee powder 3; Anti-oxidizing gas 4; Pressure plate 5; Coffee extraction machine handle 9; Receptacle 91; Dispensing hole 911; Rotating buckle 919; Handle part 99. Detailed Implementation

[0030] The specific embodiments of this utility model will now be described with reference to the accompanying drawings.

[0031] As a specific embodiment, the coffee device for making Italian coffee in the first embodiment includes a packaging bag 2 and a cylindrical bottom cup 1. The bottom cup 1 is provided with an inner cavity with an opening at the top (not shown in the figure) and a plurality of through holes 11 are provided on its bottom wall.

[0032] Coffee powder 3 is placed inside the inner cavity of the base cup 1. The coffee powder 3 abuts against the inner wall (i.e., the side wall and bottom wall) of the inner cavity of the base cup 1, and the top surface of the coffee powder 3 is lower than the base cup 1. Referring to the process of making espresso by hand, after the coffee powder 3 is placed in the base cup 1, it is compacted using a tamper (or a powder dispenser) (e.g., with 30 pounds of pressure), so that the top surface of the coffee powder 3 is lower than the base cup 1 and abuts against the inner wall of the inner cavity of the base cup 1 while maintaining a certain pressure. It should be noted that although the through hole 11 penetrates the bottom wall of the base cup 1, its diameter is small enough to prevent coffee powder particles from passing through but allow water to pass through, such as 0.25 or 0.3 mm. The number of through holes 11 is also variable, for example, it could be 556 or more. It is easy to understand that the diameter and number of through holes 11 can be adjusted according to taste preferences and are not limited to the examples above.

[0033] The packaging bag 2 has air-tight properties, for example, the packaging bag 2 is made of aluminum foil or polyethylene film and has air-tight properties, which can prevent or reduce the entry of outside air into the packaging bag 2.

[0034] The base cup 1 and coffee powder 3 are located inside the packaging bag 2. The packaging bag 2 is under negative pressure (i.e., pressure lower than atmospheric pressure), which causes the inner wall of the packaging bag 2 to adhere to the base cup 1 and the coffee powder 3 respectively. For example, as mentioned above, after placing the coffee powder 3 into the base cup 1 and compacting it, the base cup 1 and the compacted coffee powder 3 inside it are put into the packaging bag 2. Then, the air inside the packaging bag 2 is extracted and the packaging bag 2 is sealed. This achieves negative pressure (i.e., pressure lower than atmospheric pressure) inside the packaging bag 2, causing the inner wall of the packaging bag 2 to adhere to the base cup 1 and the coffee powder 3 respectively.

[0035] The working principle is as follows: the process of compacting coffee powder 3 in the bottom cup 1 is carried out in a factory or other place using specialized equipment (such as a machine with constant pressure). This ensures that the compaction degree of coffee powder 3 is uniform and meets the desired value (for example, when a certain amount of coffee powder 3 is placed into the inner cavity of the bottom cup 1 of the same volume and compressed to the same position under the same pressure, the compaction degree of coffee powder 3 is the same). The airtightness of the packaging bag 2 can prevent or reduce the oxidation of coffee powder 3 and its sourness. The negative pressure inside the packaging bag 2 can ensure that the compaction degree of coffee powder 3 can be maintained for a long time until the user opens the packaging bag 2.

[0036] After the user opens the packaging bag 2, the bottom cup 1 containing the compacted coffee powder 3 is placed into the receiving part 91 of the coffee extractor handle 9. Then, the user holds the handle part 99 and attaches the receiving part 91 to a prior art coffee machine (not shown in the attached diagram, such as the coffee machine disclosed in CN222265026U, which is usually installed by a rotating buckle 919 on the receiving part 91). The high temperature and high pressure water generated by the coffee passes through the compacted coffee powder 3 and the through hole 11 (at this time, the water contains coffee oil and other substances in the coffee powder 3 and is coffee liquid), and the coffee liquid is output from the liquid outlet 911.

[0037] As can be seen from the above, the embodiments of this utility model can ensure that the compaction of coffee powder 3 is uniform and meets the expected value, and the compaction and freshness (i.e., the degree to which it is not oxidized by oxygen in the air) of coffee powder 3 can be maintained for a long time. Users no longer need to manually load and compact the powder before making coffee, which makes it convenient to make Italian coffee.

[0038] As one specific implementation method, the bottom cup 1 is made of food-grade stainless steel or other metals. The bottom cup 1, made of food-grade stainless steel or other metals, maintains its strength, is not easily deformed by impact, and can be sterilized using existing technologies such as high temperature, making it easy to recycle and reuse.

[0039] As one specific implementation, the bottom cup 1 has a top outer edge 12. This facilitates the insertion and removal of the bottom cup 1 into the receiving portion 91 of the coffee brewing machine handle 9.

[0040] As one specific implementation, the packaging bag 2 includes a front layer 21 and a back layer 22; the bottom cup 1 and coffee powder 3 are located between the front layer 21 and the back layer 22, and the part where the front layer 21 and the back layer 22 are joined (e.g., by heat fusion) is called the joint 23, which is located on the outer side of the top outer edge 12 on the same plane; for example, when viewed from above, the outer edge of the joint 23 is annular or square. This ensures that the inner wall of the packaging bag 2 is in close contact with the bottom cup 1 and the coffee powder 3, thereby ensuring that the compaction of the coffee powder 3 can be maintained for a long time.

[0041] As one specific implementation, the connecting part 23 is provided with a triangular notch when viewed from above. This facilitates tearing open the connecting part 23 to remove the bottom cup 1 and coffee powder 3 from the packaging bag 2.

[0042] like Figure 5 As shown, the coffee maker for making espresso in the second embodiment differs from the first embodiment in that it also includes a pressure plate 5; the packaging bag 2 is filled with an anti-oxidation gas 4, such as nitrogen or helium. The pressure plate 5 is detachably fixed to the bottom cup 1 and fits against the top surface of the coffee powder 3. For example, the pressure plate 5 is circular when viewed from above and is embedded in the bottom cup 1, with its sidewall abutting against the inner sidewall of the bottom cup 1 (e.g., Figure 5 (As shown) This allows the pressure plate 5 and the bottom cup 1 to be detachably fixed together. For example, the middle part of the pressure plate 5 is cylindrical and fits snugly into the bottom cup 1. The top of the pressure plate 5 extends outward and then bends inward to form a flexible U-shaped buckle (this embodiment is not shown in the attached figure, but it is easy to understand). Figure 5 The opening of the U-shaped buckle (facing inwards towards the axis of the bottom cup 1) is located on the bottom cup 1. The top outer edge 12 engages with the U-shaped buckle, thereby detachably and securely connecting the pressure plate 5 to the bottom cup 1. This further ensures that the freshness of the coffee powder 3 can be maintained for a longer period of time. In addition, the bottom cup 1 and the coffee powder 3 may move within the space occupied by the anti-oxidation gas 4 inside the packaging bag 2, which may cause the coffee powder 3 to separate from the bottom cup 1. The pressure plate 5 ensures that the coffee powder 3 remains inside the bottom cup 1.

[0043] The terms used in this invention, such as "first," "second," etc., do not indicate any order, quantity, or importance, but are merely for distinction.

[0044] In this invention, terms such as "a" or "an" are used to indicate not a limitation on the quantity, but rather to indicate the existence of at least one of the mentioned objects.

[0045] In this utility model, terms indicating direction or location such as top, bottom, side, longitudinal, transverse, middle, center, outside, inside, horizontal, vertical, left, right, above, and below are used to indicate relative positions rather than absolute positions.

[0046] Terms used in this invention, such as "approximately," "generally," "approximately," and "similar," are limiting terms used to indicate features that are present but allow for certain deviations. The amount of deviation allowed may vary depending on the specific context; for example, regarding dimensional deviations, the specific context may include, but is not limited to, relevant standards for dimensional tolerances.

Claims

1. A coffee device for making Italian coffee, comprising a packaging bag (2) and a cylindrical base cup (1), the base cup (1) having an inner cavity with an opening at the top and a plurality of through holes (11) on its bottom wall; coffee powder (3) is disposed in the inner cavity of the base cup (1), the coffee powder (3) abutting against the inner wall of the inner cavity of the base cup (1), and the top surface of the coffee powder (3) being lower than the base cup (1); Its characteristics are, The packaging bag (2) is airtight, and the bottom cup (1) and coffee powder (3) are located inside the packaging bag (2).

2. The coffee apparatus for facilitating the preparation of espresso according to claim 1, characterized in that, The packaging bag (2) is under negative pressure, which makes the inner wall of the packaging bag (2) fit into the bottom cup (1) and the coffee powder (3) respectively.

3. The coffee apparatus for making espresso according to claim 1, characterized in that, The bottom cup (1) is made of metal.

4. The coffee apparatus for making espresso according to claim 3, characterized in that, The top of the bottom cup (1) is provided with a top outer edge (12).

5. The coffee apparatus for making espresso according to claim 4, characterized in that, The packaging bag (2) includes a front layer (21) and a back layer (22); the bottom cup (1) and coffee powder (3) are located between the front layer (21) and the back layer (22), and the part where the front layer (21) and the back layer (22) are joined is the joint (23), which is located on the outside of the same plane as the top outer edge (12).

6. The coffee apparatus for facilitating the preparation of espresso according to claim 5, characterized in that, When viewed from above, the outer edge of the joint (23) is either circular or square.

7. The coffee apparatus for making espresso according to claim 5, characterized in that, The joint (23) has a notch that appears as a triangle when viewed from above.

8. The coffee apparatus for making espresso according to claim 1, characterized in that, The packaging bag (2) is made of aluminum foil or polyethylene film.

9. The coffee apparatus for making espresso according to claim 1, characterized in that, It also includes a pressure plate (5); the packaging bag (2) is filled with an anti-oxidation gas (4), and the pressure plate (5) is detachably fixed to the bottom cup (1) and adheres to the top surface of the coffee powder (3).

10. The coffee apparatus for facilitating the preparation of espresso according to claim 1, characterized in that, The anti-oxidation gas (4) is nitrogen or helium; the pressure plate (5) is circular when viewed from above and is embedded in the bottom cup (1), with its side wall abutting against the inner side wall of the bottom cup (1), or the middle part of the pressure plate (5) is cylindrical and fits snugly into the bottom cup (1), and the top of the pressure plate (5) extends outward and then bends inward to form a flexible U-shaped buckle.

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