CN211186887U - Coffee extraction equipment - Google Patents
Coffee extraction equipment Download PDFInfo
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- CN211186887U CN211186887U CN201921516874.7U CN201921516874U CN211186887U CN 211186887 U CN211186887 U CN 211186887U CN 201921516874 U CN201921516874 U CN 201921516874U CN 211186887 U CN211186887 U CN 211186887U
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Abstract
The utility model discloses coffee extraction equipment, which comprises a cylinder body and a pressure piece; the cylinder body is a hollow cylindrical structure with openings at two ends, an internal thread structure is arranged on the inner wall of one opening end, the other opening end is a liquid outlet, and a filter screen is arranged on the side of the cylinder body close to the liquid outlet; the outer wall of the pressure piece is provided with an external thread structure matched with the internal thread structure, one end of the pressure piece is connected with a piston, the piston is positioned in the cylinder body and is tightly matched with the inner wall of the cylinder body, the pressure piece is axially provided with a through hole for communicating the inside of the cylinder body with the outside, and a pressure limiting valve is arranged in the through hole; the relative position of the cylinder body and the pressure piece can be changed by enabling the cylinder body and the pressure piece to rotate relatively, and acting force is applied to coffee liquid in the cylinder body to extract. The coffee extraction equipment of the utility model has simple structure and simple and convenient operation; the stability of the taste of the coffee obtained by extraction is improved by ensuring the extraction pressure within a certain range; low cost, no need of expensive and complex sensors and wide application prospect.
Description
Technical Field
The utility model belongs to the technical field of coffee processing, a coffee extraction equipment is related to.
Background
Espresso, a type of strong-tasting coffee, is usually drunk directly or as a base for other coffee beverages such as latte, cappuccino, macchiato and mocha.
When preparing espresso, often need extract coffee, in the coffee preparation process, the extraction is one of the key factors that determine the coffee taste, present coffee extraction device often need with devices cooperation such as filter screen in order to filter the coffee sediment, but because the coffee sediment on the filter screen often can influence the extraction of coffee after extracting many times, in addition, present extraction device generally adopts the extrusion formula more, the compression is received to extraction in-process coffee liquid, pressure is great, can give a reverse acting force of extrusion device, for example, the power supply is the manpower, can influence the use and experience, and simultaneously, the difference of extraction pressure, it is different to lead to the coffee taste, this can influence the stability of product.
Therefore, the development of the coffee extraction equipment which is simple to operate, good in use experience and good in product stability is of practical significance.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the coffee sediment on the prior art filter screen can influence the extraction of coffee, use and experience not good and the relatively poor defect of product stability, provide an easy operation, use experience good and the good coffee extraction equipment of product stability.
In order to achieve the above object, the utility model provides a following technical scheme:
a coffee extraction apparatus comprising a cylinder and a pressure member;
the cylinder body is of a hollow cylindrical structure with openings at two ends, an internal thread structure is arranged on the inner wall of one opening end, the other opening end is a liquid outlet, and a filter screen is arranged on the side, close to the liquid outlet, of the cylinder body;
the outer wall of the pressure piece is provided with an external thread structure matched with the internal thread structure, one end of the pressure piece is connected with a piston, the piston is positioned in the cylinder body and is tightly matched with the inner wall of the cylinder body, the pressure piece is axially provided with a through hole for communicating the inside of the cylinder body with the outside, and a pressure limiting valve is arranged in the through hole;
through making cylinder body and pressure piece take place relative rotation can change the relative position of cylinder body and pressure piece, apply the effort to the coffee liquid that is located in the cylinder body and extract it, even it receives great reverse effort can be guaranteed to the form of helicitic texture, the relative position of cylinder body and pressure piece is difficult for changing, the operator need not the application of force constantly when the extrusion, uses and experiences well. The utility model provides a pressure limiting valve can carry out the pressure release when the internal pressure of cylinder is too big, and then suggestion operating personnel, on the one hand the too big pressure generally is because coffee grounds accumulational too much leads to on the filter screen, and operating personnel can clear up the coffee grounds on the filter screen, and on the other hand, extraction pressure is too big, will influence the taste of extraction back coffee, the utility model discloses a design of pressure limiting valve can guarantee to a certain extent that extraction pressure is in certain extent, and then improves the stability of extracting gained coffee taste. The utility model has the advantages of simple structure, low cost need not the stability that expensive and complicated sensor can improve the product, has spreading value.
As a preferred technical scheme:
according to the coffee extraction equipment, the cylinder body is of a cylindrical structure with openings at two ends, the outer wall of the liquid outlet end of the cylinder body extends inwards in the radial direction to form a circular ring plate, and the central opening of the circular ring plate is a liquid outlet.
According to the coffee extraction equipment, the pressure piece comprises the rotary cover, the external thread rod, the connecting rod and the piston which are sequentially connected, the rotary cover, the external thread rod, the connecting rod and the piston are of an integrated structure and are coaxial, the parts can be independently processed, and then the functions can be realized in a combined piece mode, but the coffee extraction equipment has high requirements on processing precision and assembly precision and is not beneficial to large-scale industrial production;
the diameter of the screw cap is larger than the outer diameter of the external thread rod;
the external thread rod is a round rod, and an external thread structure is arranged on the outer wall of the external thread rod;
the connecting rod is a round rod, and the outer diameter of the connecting rod is smaller than that of the external thread rod;
the piston is of a waist-shaped cylinder structure with a circular cross section, the sectional areas of the upper end surface and the lower end surface of the piston are the same, the upper end surface and the lower end surface play a role in double-layer sealing, and the structural tightness is guaranteed.
A coffee extracting apparatus as described above, said cross section of the piston with the smallest area divides it into two sections of equal length in the direction of the central axis of the piston.
A coffee extracting apparatus as described above, said through hole being a circular through hole located in the center of the pressure member and coaxial with the pressure member.
According to the coffee extraction equipment, the periphery of the outer side wall of the screw cap is provided with the plurality of convex strips so as to facilitate the rotation of the screw cap by an operator, and the convex strips are arranged along the direction of the central axis of the screw cap.
According to the coffee extraction equipment, the inner wall of the cylinder body is also provided with the annular bulge for limiting the longitudinal movement position of the piston so as to prevent the piston from directly contacting with the filter screen and scraping the filter screen;
the rotary cover is provided with a sealing device for sealing the through hole so as to prevent the coffee liquid in the cylinder body from overflowing.
As above-mentioned coffee extraction equipment, the filter screen is total two-layer, is filter screen A and keeps away from the filter screen B of liquid outlet in proper order, and double-deck filtration can show the filter effect who improves the coffee sediment.
As above a coffee extraction equipment, filter screen A and filter screen B are the circular cone column structure, compare in planar structure, can improve the concentration of coffee sediment at the filter screen, make things convenient for operating personnel to clean the filter screen.
As the mesh number of the filter screen A is larger than that of the filter screen B, namely more coffee grounds with larger particles are intercepted by the filter screen B, the difficulty in taking down the filter screen B is lower, the use efficiency can be improved by prolonging the cleaning period of the filter screen A, and the specific mesh number of the coffee extraction equipment can be selected by a person skilled in the art according to actual conditions.
Has the advantages that:
(1) the coffee extraction equipment of the utility model has simple structure and simple operation, and can effectively prompt the state of the filter screen (whether cleaning is needed) of a user;
(2) the coffee extraction equipment of the utility model can improve the stability of the taste of the coffee obtained by extraction by ensuring the extraction pressure within a certain range;
(3) the utility model discloses a coffee extraction equipment, simple structure, low cost need not expensive and complicated sensor, also is applicable to the transformation to current extraction equipment, has application prospect.
Drawings
FIG. 1 is a schematic structural view of a coffee extracting apparatus of the present invention;
the device comprises a rotating cover 1, a threaded rod 2, a connecting rod 3, a piston 4, an external thread structure 5, a through hole 6, a pressure limiting valve 7, a sealing device 8, an internal thread structure 9, an annular bulge 10, a liquid outlet 11, a filter screen B12, and a filter screen A13.
Detailed Description
The following describes the present invention with reference to the accompanying drawings.
A coffee extraction apparatus, as shown in fig. 1, comprising a cylinder and a pressure member;
the cylinder body is of a hollow cylindrical structure with openings at two ends, an internal thread structure 9 is arranged on the inner wall of one opening end, a liquid outlet 11 is arranged at the other opening end, the outer wall of the liquid outlet end of the cylinder body extends inwards in the radial direction to form a circular ring plate, a central opening of the circular ring plate is the liquid outlet 11, two layers of filter screens are arranged on the side of the cylinder body close to the liquid outlet, namely a filter screen A13 and a filter screen B12 far away from the liquid outlet, the filter screens are of a conical structure, and the mesh number of the filter screens A13 is larger;
the pressure piece comprises a spiral cover 1, an external thread rod 2, a connecting rod 3 and a piston 4 which are connected in sequence, wherein the spiral cover 1, the external thread rod 2, the connecting rod 3 and the piston 4 are of an integrated structure and are coaxial; the screw cap 1 is circular, the diameter of the screw cap is larger than the outer diameter of the external thread rod 2, a plurality of convex strips are distributed on the circumference of the outer side wall of the screw cap 1, and the convex strips are arranged along the direction of the central axis of the screw cap; the external thread rod 2 is a round rod, and the outer wall of the external thread rod is provided with an external thread structure 5 matched with the internal thread structure 9; the connecting rod 3 is a round rod, and the outer diameter of the connecting rod is smaller than that of the external thread rod 2; the piston 4 is in a waist-shaped cylinder structure with a circular cross section, the piston 4 is positioned in the cylinder body and is tightly matched with the inner wall of the cylinder body, the cross section with the smallest piston area divides the piston into two sections with the same length along the direction of the central axis of the piston, and the inner wall of the cylinder body is provided with an annular bulge 10 for limiting the longitudinal movement position of the piston 4; the pressure piece is axially provided with a circular through hole 6 which is communicated with the inside of the cylinder body and the outside, the circular through hole is positioned in the center of the pressure piece and is coaxial with the pressure piece, a pressure limiting valve 7 is arranged in the through hole 6, and the spiral cover 1 is provided with a sealing device 8 for sealing the through hole 6.
Through making cylinder body and pressure piece take place relative rotation can change the relative position of cylinder body and pressure piece, exert the effort to the coffee liquid that is located the cylinder body and extract, it is too much to accumulate coffee grounds on the filter screen, and extraction pressure is too big, and the pressure limiting valve will carry out the pressure release, and operating personnel can see the coffee liquid and spill over, if still need extract accessible sealing device and seal the through-hole and continue to extract, otherwise should clear up the coffee grounds on the filter screen, and extraction pressure is too big will influence the taste of the gained coffee to a certain extent.
Through verification, the coffee extraction equipment of the utility model has simple structure and simple and convenient operation, and can effectively prompt the state of the filter screen of a user; the stability of the taste of the coffee obtained by extraction can be improved by ensuring the extraction pressure within a certain range; simple structure, low cost, no need of expensive and complex sensors, suitability for the reconstruction of the existing extraction equipment and great application prospect.
Although specific embodiments of the present invention have been described above, it will be appreciated by those skilled in the art that these embodiments are merely illustrative and various changes or modifications may be made without departing from the spirit and scope of the invention.
Claims (10)
1. A coffee extraction apparatus, comprising a cylinder and a pressure member;
the cylinder body is of a hollow cylindrical structure with openings at two ends, an internal thread structure is arranged on the inner wall of one opening end, the other opening end is a liquid outlet, and a filter screen is arranged on the side, close to the liquid outlet, of the cylinder body;
the outer wall of the pressure piece is provided with an external thread structure matched with the internal thread structure, one end of the pressure piece is connected with a piston, the piston is positioned in the cylinder body and is tightly matched with the inner wall of the cylinder body, the pressure piece is axially provided with a through hole for communicating the inside of the cylinder body with the outside, and a pressure limiting valve is arranged in the through hole;
the relative position of the cylinder body and the pressure piece can be changed by enabling the cylinder body and the pressure piece to rotate relatively, and acting force is applied to coffee liquid in the cylinder body to extract.
2. The coffee extraction apparatus of claim 1, wherein the cylinder is a cylinder with two open ends, the outer wall of the liquid outlet end of the cylinder extends radially inward to form a circular plate, and the central opening of the circular plate is the liquid outlet.
3. The coffee extraction apparatus of claim 2, wherein the pressure member comprises a cap, a male threaded rod, a connecting rod and a piston connected in sequence, the cap, the male threaded rod, the connecting rod and the piston being of an integral structure, four of which are coaxial;
the diameter of the screw cap is larger than the outer diameter of the external thread rod;
the external thread rod is a round rod, and an external thread structure is arranged on the outer wall of the external thread rod;
the connecting rod is a round rod, and the outer diameter of the connecting rod is smaller than that of the external thread rod;
the piston is of a waist-shaped cylinder structure with a circular cross section.
4. A coffee extraction apparatus according to claim 3, wherein the cross-section of the piston having the smallest area divides the piston into two sections of equal length in the direction of the central axis of the piston.
5. A coffee extraction apparatus according to claim 4, wherein said through hole is a circular through hole, which is located in the centre of the pressure member and is coaxial with the pressure member.
6. The coffee extraction apparatus of claim 5, wherein a plurality of ribs are distributed on the circumference of the outer side wall of the screw cap, and the ribs are arranged along the central axis direction of the screw cap.
7. A coffee extraction apparatus as claimed in claim 6, wherein the inner wall of the cylinder is further provided with an annular projection for limiting the longitudinal movement of the piston;
and a sealing device for sealing the through hole is arranged on the rotary cover.
8. A coffee extraction apparatus as claimed in claim 7, wherein the filter mesh has two layers, in turn filter mesh A and filter mesh B remote from the outlet.
9. A coffee extraction apparatus as claimed in claim 8, wherein the filter mesh A and the filter mesh B are of conical configuration.
10. A coffee extraction apparatus as claimed in claim 9, wherein the mesh size of filter a is greater than the mesh size of filter B.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921516874.7U CN211186887U (en) | 2019-09-11 | 2019-09-11 | Coffee extraction equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921516874.7U CN211186887U (en) | 2019-09-11 | 2019-09-11 | Coffee extraction equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211186887U true CN211186887U (en) | 2020-08-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921516874.7U Active CN211186887U (en) | 2019-09-11 | 2019-09-11 | Coffee extraction equipment |
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| CN (1) | CN211186887U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114176394A (en) * | 2020-09-14 | 2022-03-15 | 宁波方太厨具有限公司 | Variable-pressure extraction device and coffee machine and tea extraction machine comprising same |
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2019
- 2019-09-11 CN CN201921516874.7U patent/CN211186887U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114176394A (en) * | 2020-09-14 | 2022-03-15 | 宁波方太厨具有限公司 | Variable-pressure extraction device and coffee machine and tea extraction machine comprising same |
| CN114176394B (en) * | 2020-09-14 | 2023-03-31 | 宁波方太厨具有限公司 | Variable-pressure extraction device and coffee machine and tea extraction machine comprising same |
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