Manual pressure coffee machine

Abstract

The present invention relates to a manual pressure coffee machine, comprising an outer cup body, a cup cavity with an opening at one end is arranged in the outer cup body, an inner liner which can be inserted into and pulled out of the cup cavity from the opening end is arranged on the outer cup body, and the technical key points are that an inner liner cavity for accommodating brewing materials is arranged in the inner liner, a sealing ring for separating the cup cavity to form a closed space is arranged on the inner liner, a filter screen connected to the closed space is arranged at the bottom of the inner liner cavity, and when the inner liner is pulled outward, negative pressure is formed in the closed space so that the liquid in the inner liner cavity is sucked into the closed space through the filter screen. The present invention has a simple structure and brews coffee by generating negative pressure.

Description

[Technical field]

[0001] The invention relates to a portable manual coffee machine. [Background technology]

[0002] Most manual coffee machines on the market generally include an outer cup and an inner cup. A squeezing rod is provided in the inner cup to squeeze the coffee in the inner cup into the outer cup. In this way, the liquid is squeezed directly without forming air pressure. In this way, the pressure during squeezing is difficult to control, the obtained coffee tastes bad, and the coffee powder can be easily squeezed into the outer cup. [Summary of the invention]

[0003] The purpose of the present invention is to overcome the deficiencies of the prior art and to provide a manual pressure coffee machine which has a simple structure, is easy to operate and can brew coffee by forming negative air pressure.

[0004] In order to solve the above problems, the present invention adopts the following technical solutions:

[0005] A manual pressure coffee machine comprises an outer cup body, wherein the outer cup body is provided with a cup cavity with an opening at one end, and the outer cup body is provided with an inner liner which can be inserted into and pulled out of the cup cavity from the open end, and is characterized in that: the inner liner is provided with an inner liner cavity for accommodating brewing materials, the inner liner is provided with a sealing ring for dividing the cup cavity to form a closed space, a filter screen connected to the closed space is provided at the bottom of the inner liner cavity, and when the inner liner is pulled outward, negative pressure is formed in the closed space, and the liquid in the inner liner cavity is sucked into the closed space through the filter screen.

[0006] The manual pressure coffee machine as described above is characterized in that: the outer cup body is provided with a driving device capable of driving the inner container to pull out the outer cup body.

[0007] The manual pressure coffee machine as described above is characterized in that: an outer wall of the inner container is provided with an external thread, the driving device is a ring sleeve arranged on the outer cup body and sleeved outside the inner container, and an internal thread is provided in the ring sleeve to be threadably connected to the external thread.

[0008] The manual pressure coffee machine as described above is characterized in that: the upper end of the inner container is provided with an end extending out of the outer cup body, the outer diameter of the end is larger than the outer diameter of the outer cup body, and the driving device is arranged between the end and the opening end of the outer cup body.

[0009] The manual pressure coffee machine as described above is characterized in that the upper end of the inner container is open, a cover is provided on the open end of the inner container, and a leak-proof rubber ring is provided between the cover and the inner container.

[0010] The manual pressure coffee machine as described above is characterized in that: an opening communicating with the cup cavity is provided on the bottom wall of the inner container, and the filter is arranged to press against the bottom wall of the inner container to cover the opening.

[0011] The manual pressure coffee machine as described above is characterized in that an annular groove is provided on the outer wall of the bottom of the inner container, and the sealing ring is arranged in the annular groove.

[0012] The manual pressure coffee machine as described above is characterized in that a non-slip pad is provided on the bottom surface of the outer cup body.

[0013] The manual pressure coffee machine as described above is characterized in that the filter screen is a thin sheet.

[0014] A manual pressure coffee machine as described above is characterized in that the filter is a component, and the component includes a cup body arranged at the bottom of the inner cavity for containing coffee powder, and the upper and lower ends of the cup body are respectively provided with an upper filter and a lower filter.

[0015] The manual pressure coffee machine as described above is characterized in that a gravity block is provided at the bottom of the cup body below the lower filter screen, and the gravity block is separated from the bottom surface of the cup body to allow liquid to flow out.

[0016] The manual pressure coffee machine as described above is characterized in that a filter sealing ring is arranged outside the bottom of the cup body, and the bottom end of the filter sealing ring is pressed against the bottom wall of the inner chamber.

[0017] The manual pressure coffee machine as described above is characterized in that an upper filter frame is provided at the upper end of the cup body, the upper filter is arranged on the upper filter frame, and a filter frame sealing ring is provided between the upper filter frame and the cup body.

[0018] The manual pressure coffee machine as described above is characterized in that the cup body is threadedly connected to the bottom of the inner chamber.

[0019] A manual pressure coffee machine as described above is characterized in that an upper filter frame and a lower filter frame are respectively provided at the upper end and the lower end of the cup body, the upper filter is provided on the upper filter frame, the lower filter is provided on the lower filter frame, and filter frame sealing rings are respectively provided between the upper filter frame and the cup body and between the lower filter frame and the cup body.

[0020] The manual pressure coffee machine as described above is characterized in that: the inner chamber has a bottom opening, and the cup body extends from the bottom opening of the inner chamber and is threadedly connected to the inner chamber.

[0021] The beneficial effects of the present invention are as follows: coffee material is placed in the inner container, and when the inner container is pulled out, the enclosed space increases, and negative pressure is formed therein, so that the coffee liquid in the inner container cavity is sucked into the enclosed space, and the coffee in the cup cavity is drunk after the inner container is pulled out, and the coffee is brewed by air pressure, and the structure is simple and the operation is convenient; by arranging a driving device to drive the inner container, the operation is more convenient; an opening is arranged on the bottom wall, and the filter screen covers the opening and presses against the bottom wall of the inner container, which is convenient for disassembly and cleaning of the filter screen; the filter screen is a component, so that coffee powder can be put into the filter screen, and the coffee powder will not be in the inner container, which is convenient for cleaning; a gravity block is arranged at the bottom end of the cup body, which can prevent the filter screen component from floating up easily.

Brief Description of the Drawings

[0022] Figure 1 is a three-dimensional diagram of the first embodiment of the present invention;

[0023] Figure 2 is a cross-sectional view of embodiment 1 of the present invention;

[0024] Figure 3 It is an exploded view of the first embodiment of the present invention;

[0025] Figure 4 It is a three-dimensional diagram of the second embodiment of the present invention;

[0026] Figure 5 is a cross-sectional view of a second embodiment of the present invention;

[0027] Figure 6 It is an exploded view of the second embodiment of the present invention;

[0028] Figure 7 is a three-dimensional diagram of a component of the second embodiment of the present invention;

[0029] Figure 8 is a cross-sectional view of a component of Embodiment 2 of the present invention;

[0030] Fig. 9 It is a three-dimensional diagram of a cup body according to the second embodiment of the present invention;

[0031] Fig.10 It is a three-dimensional diagram of the third embodiment of the present invention;

[0032] Fig.11 is a cross-sectional view of embodiment 3 of the present invention;

[0033] Fig.12 It is an exploded view of the third embodiment of the present invention;

[0034] Fig.13 It is a three-dimensional diagram of the components of the third embodiment of the present invention. [Specific implementation method]

[0035] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments:

[0036] Embodiment 1, as Figures 1 to 3 As shown, a manual pressure coffee machine includes an outer cup body 1, and a non-slip pad 10 is provided on the bottom surface of the outer cup body 1. The outer cup body 1 can be a thermos cup, and a cup cavity 11 with an open end is provided inside the outer cup body 1. An inner liner 2 is provided on the outer cup body 1, which can be inserted into and pulled out of the cup cavity 11 from the open end. One end of the inner liner 2 is inserted into the cup cavity 11 and can be pulled out. The upper end of the inner liner 2 is open, and a lid 6 is provided on the open end of the inner liner 2. A leak-proof rubber ring 61 is provided between the lid 6 and the inner liner 2. After the lid 6 is covered, the entire coffee machine forms a cylindrical cup body. The inner liner 2 is provided with an inner liner cavity 21 for accommodating brewing materials, and the brewing materials are water, coffee, tea, etc., and the coffee can be in the form of coffee powder, coffee bags, coffee capsules, etc. The inner liner 2 is provided with a sealing ring 4 that separates the cup cavity 11 to form a closed space 12. After the inner liner 2 is inserted into the cup cavity 11, the cup cavity 11 is separated into upper and lower spaces by the sealing ring 4. The lower space is the closed space 12. The outer wall of the bottom of the inner liner 2 is provided with a ring groove 25. The sealing ring 4 is arranged in the ring groove 25. The function of the sealing ring 4 is equivalent to a piston ring. The inner liner 2 can be equivalent to a piston rod. When the inner liner 2 is pulled out, the volume of the closed space 12 becomes larger to form a negative pressure. The closed space 12 is designated as a space without a large opening. The bottom of the inner liner cavity 21 is provided with a filter screen 3 that is connected to the closed space 12. The filter screen 3 is a thin sheet, that is, a sheet block, and its thickness is about 1-10mm. The mesh of the filter screen 3 is small, which allows liquid to pass through, but coffee grounds cannot pass through. When water is poured into the inner liner cavity 21, the closed space 12 is basically in a closed state. When the inner container 2 is pulled outward, negative pressure is formed in the closed space 12 so that the liquid in the inner container cavity 21 is sucked into the closed space 12 through the filter screen 3, so that the coffee is finally in the outer cup body 1.

[0037] The inner liner 2 can be pulled out manually, but this is not the best way. The best way is to set a driving device 5 on the outer cup body 1 that can drive the inner liner 2 to pull out the outer cup body 1. Specifically, an outer thread 22 is provided on the outer wall of the inner liner 2, and the driving device 5 is a ring sleeve provided on the outer cup body 1 and sleeved on the outside of the inner liner 2, and an internal thread 51 threadedly connected to the external thread 22 is provided in the ring sleeve. The upper end of the inner liner 2 is provided with a terminal 23 extending out of the outer cup body 1, and the outer diameter of the terminal 23 is larger than the outer diameter of the outer cup body 1. The driving device 5 is provided between the terminal 23 and the open end of the outer cup body 1, and the upper end of the driving device 5 is at the lower end of the terminal 23, and the lower end of the driving device 5 is supported on the open end of the outer cup body 1. When the ring sleeve is manually rotated, the ring sleeve does not rise, and the inner liner 2 is driven upward, thereby increasing the enclosed space 12 and reducing the air pressure. An opening 24 communicating with the cup cavity 11 is provided on the bottom wall of the inner liner 2. The filter screen 3 is arranged to be pressed against the bottom wall of the inner liner 2 to cover the opening 24. The filter screen 3 is squeezed onto the side wall of the inner liner cavity 21 by interference fit, or a rubber ring is placed on the filter screen 3 and squeezed onto the side wall of the inner liner cavity 21 by the rubber ring, so that the filter screen 3 is convenient to be taken out and cleaned.

[0038] When in use, the inner liner 2 is loaded into the outer cup body 1, and the coffee is poured into the inner liner cavity 21. Then, water is poured into the inner liner cavity 21 to brew the coffee. Then, the ring sleeve is rotated to move the inner liner cavity 21 upward, and a negative pressure is formed in the enclosed space 12. The coffee liquid in the inner liner cavity 21 is sucked into the enclosed space 12. After the inner liner 2 is completely pulled out, the coffee in the outer cup body 1 is poured out or directly drunk. The structure is simple and the operation is convenient. The coffee pressed out by air pressure has rich foam and good taste.

[0039] Example 2 Figures 4 to 9As shown, the difference from the first embodiment is that the filter 3 is a component, that is, a filter assembly. When the inner tank 2 is pulled out, negative pressure is formed in the enclosed space 12 so that the liquid in the inner tank cavity 21 is sucked into the enclosed space 12 through the filter assembly. The liquid is water. The assembly includes a cup body 31 disposed at the bottom of the inner tank cavity 21 for containing coffee powder. The bottom of the inner tank cavity 21 is open. The filter assembly covers the bottom opening of the inner tank cavity 21. The coffee powder is in the form of bulk coffee powder, coffee bags, capsule coffee, etc. The assembly includes a cup body 31 disposed at the bottom of the inner tank cavity 21 for containing coffee powder. The upper and lower ends of the cup body 31 are respectively provided with an upper filter 32 and a lower filter 33. An upper filter frame 34 is provided at the upper end of the cup body 31, and an upper filter 32 is provided on the upper filter frame 34. A filter frame sealing ring 35 is provided between the upper filter frame 34 and the cup body 31. The cup body 31 is filled with coffee and covered with the upper filter frame 34, so that coffee powder is not easy to enter the inner chamber 21. A gravity block 37 is provided at the bottom of the cup body 31 below the lower filter screen 33. The function of the gravity block 37 is to increase the weight of the cup body 31 so that the cup body 31 is not easy to float under the action of water. The gravity block 37 can be a metal block and is installed by screws. The screws pass through the lower filter screen 33 and the bottom of the cup body 31. The bottom of the cup body 31 has a plurality of larger through holes. The lower filter screen 33 is embedded in the bottom of the cup body 31 to cover the through holes. The gravity block 34 is separated from the bottom surface of the cup body 31 for liquid to flow out. The gravity block 34 is outside the cup body 31. After the liquid in the cup body 31 passes through the lower filter screen 33, it flows out from the gap between the gravity block 34 and the bottom of the cup body 31 and enters the enclosed space 12 in the inner tank 2. A filter sealing ring 36 is provided on the outside of the bottom of the cup body 31, and the bottom end of the filter sealing ring 36 is pressed against the bottom wall of the inner tank cavity 21. After the enclosed space 12 forms a negative pressure, the cup body 31 is sucked downward by the action of the negative pressure, so that the filter sealing ring 36 is tightly attached to the bottom wall of the inner tank cavity 21, realizing a self-locking seal.

[0040] If capsule coffee is used, since the capsule coffee itself has a filter, if capsule coffee is used, the filter in the capsule coffee can be used as the lower filter 33.

[0041] When in use, the cup body 31 is disassembled, the upper filter 32 is removed, the coffee powder is put into the cup body 31, the upper filter 32 is covered, and the cup body 31 is put into the inner tank cavity 21, and then water is poured into the inner tank cavity 21, and the ring sleeve is rotated to move the inner tank cavity 21 upward, and the closed space 12 forms a negative pressure. The water in the inner tank cavity 21 first passes through the upper filter 32 and enters the cup body 31, and then after brewing the coffee powder, the coffee liquid passes through the lower filter 33 and enters the closed space 12. After the inner tank 2 is completely pulled out, the coffee in the outer cup body 1 is poured out, or directly drunk. The structure is simple, the operation is convenient, and the coffee foam pressed out by air pressure is rich and has a good taste. When the coffee powder needs to be replaced or cleaned, the cup body 31 can be taken out again.

[0042] Example 3 Figures 10 to 13 As shown, the difference from the second embodiment is that the installation method of the filter assembly is different, specifically, the cup body 31 is threadedly connected to the bottom of the inner tank cavity 21, the bottom end of the inner tank cavity 21 is open, and the cup body 31 extends from the bottom opening of the inner tank cavity 21 and is threadedly connected to the inner tank cavity 21. The upper and lower ends of the cup body 31 are respectively provided with an upper filter frame 34 and a lower filter frame 38, the upper filter 32 is arranged on the upper filter frame 34, and the lower filter 33 is arranged on the lower filter frame 38. A filter frame sealing ring 35 is respectively provided between the upper filter frame 34 and the cup body 31 and between the lower filter frame 38 and the cup body 31, and the installation is simple through threaded connection. If capsule coffee is used, since the capsule coffee itself has a filter, if capsule coffee is used, the filter in the capsule coffee can be used as the upper filter 32 or the lower filter 33.

Claims

1. A manual pressure coffee machine, comprising an outer cup body (1), wherein the outer cup body (1) is provided with a cup cavity (11) with one end open, and the outer cup body (1) is provided with an inner liner (2) which can be inserted into and removed from the cup cavity (11) from the open end, characterized in that: The inner container (2) is provided with an inner container cavity (21) for accommodating brewing materials, the inner container (2) is provided with a sealing ring (4) for dividing the cup cavity (11) into a closed space (12), the bottom of the inner container cavity (21) is provided with a filter screen (3) which is connected to the closed space (12), when the inner container (2) is pulled outward, negative pressure is formed in the closed space (12), so that the liquid in the inner container cavity (21) is sucked into the closed space (12) through the filter screen (3), the outer cup body (1) is provided with a driving device (5) which can drive the inner container (2) to be pulled outward from the outer cup body (1); the outer wall of the inner container (2) is provided with an external thread (22), the driving device (5) is a ring sleeve provided on the outer cup body (1) and sleeved on the outer side of the inner container (2), the inner container (2) is provided with a sealing ring (4) for separating the inner container cavity (11) and the inner container cavity (1) from the outer cup body (1), and the inner container cavity (2) is provided with a sealing ring (4) for separating the inner container cavity (11) and the inner container cavity (1) from the outer cup body (1). The ring sleeve is provided with an internal thread (51) threadedly connected to the external thread (22); the upper end of the inner container (2) is provided with an end head (23) extending out of the outer cup body (1); the outer diameter of the end head (23) is larger than the outer diameter of the outer cup body (1); the driving device (5) is arranged between the end head (23) and the opening end of the outer cup body (1); the filter screen (3) is a component, and the component comprises a cup body (31) connected to the bottom of the inner container cavity (21) for accommodating coffee powder; the upper and lower ends of the cup body (31) are respectively provided with an upper filter screen (32) and a lower filter screen (33); the bottom end of the cup body (31) is provided with a gravity block (37) below the lower filter screen (33); the gravity block (37) is separated from the bottom surface of the cup body (31) to allow liquid to flow out.

2. A manual pressure coffee machine according to claim 1, characterized in that: The upper end of the inner liner (2) is open, a cover (6) is provided on the open end of the inner liner (2), and a leak-proof rubber ring (61) is provided between the cover (6) and the inner liner (2).

3. The manual pressure coffee machine according to claim 1, characterized in that: An opening (24) communicating with the cup cavity (11) is provided on the bottom wall of the inner container (2), and the filter screen (3) is pressed against the bottom wall of the inner container (2) to cover the opening (24).

4. The manual pressure coffee machine according to claim 1, characterized in that: An annular groove (25) is provided on the outer wall of the bottom of the inner container (2), and the sealing ring (4) is arranged in the annular groove (25).

5. The manual pressure coffee machine according to claim 1, characterized in that: The bottom surface of the outer cup body (1) is provided with an anti-slip pad (10).

6. The manual pressure coffee machine according to claim 1, characterized in that: The filter screen (3) is a thin sheet.

7. A manual pressure coffee machine according to claim 1, characterized in that A filter sealing ring (36) is disposed outside the bottom of the cup body (31), and the bottom end of the filter sealing ring (36) is pressed against the bottom wall of the inner chamber (21).

8. A manual pressure coffee machine according to claim 1, characterized in that An upper filter frame (34) is provided at the upper end of the cup body (31), the upper filter (32) is arranged on the upper filter frame (34), and a filter frame sealing ring (35) is provided between the upper filter frame (34) and the cup body (31).

9. A manual pressure coffee machine according to claim 1, characterized in that The cup body (31) is threadedly connected to the bottom of the inner chamber (21).

10. A manual pressure coffee machine according to claim 9, characterized in that An upper filter frame (34) and a lower filter frame (38) are respectively provided at the upper end and the lower end of the cup body (31); the upper filter screen (32) is provided on the upper filter frame (34); the lower filter screen (33) is provided on the lower filter frame (38); and filter frame sealing rings (35) are respectively provided between the upper filter frame (34) and the cup body (31) and between the lower filter frame (38) and the cup body (31).

11. A manual pressure coffee machine according to claim 9, characterized in that The bottom end of the inner liner cavity (21) is open, and the cup body (31) extends from the bottom opening of the inner liner cavity (21) and is threadedly connected to the inner liner cavity (21).

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