Coffee machine

Abstract

The utility model discloses a coffee machine, which relates to the field of beverage preparation devices and comprises a machine shell, a water sump is placed in the machine shell, and a top cover is arranged at the upper end of the machine shell. A water diversion net rack is clamped at the bottom of the machine shell and is used for fixing the water sump in the machine shell; a flow limiting screw is mounted on the water distribution net rack, a water distribution net and a powder bowl are mounted below the water distribution net rack, a powder bowl rack is clamped below the water distribution net rack, and the water distribution net, the powder bowl and the water distribution net rack are connected together through the powder bowl rack; and a liquid receiving cup is also mounted below the water diversion net rack. According to the coffee machine, a brand new structural design is adopted, a water distribution net structure of a traditional E61-version coffee machine is utilized, the appearance and performance of the coffee machine are basically consistent with those of the traditional E61-version coffee machine, the quality of extracted coffee is improved, and the coffee machine can serve as a saturated brewing head to be changed into a commercial coffee machine.

Description

Technical Field

[0001] The utility model relates to a beverage preparation device, in particular to a coffee machine. Background Art

[0002] As a device for brewing coffee, coffee machines mainly include drip coffee machines, high-pressure steam coffee machines and gas pressure coffee machines. Gas pressure coffee machines are widely used due to their high production efficiency, simple operation and time saving. The process of brewing coffee with a gas pressure coffee machine is as follows: a water tank is set in the coffee machine, and the water tank is connected to an external air pump to provide high pressure. Cold water will become high-pressure hot water under high pressure. The heated water is modified by pressure to flow into the coffee filter (i.e. the powder bowl and the water distribution net), and the coffee extending from the bottom flows into the coffee cup to achieve coffee extraction.

[0003] The traditional pneumatic coffee machines on the market basically cannot adopt the water distribution network structure of the traditional version of the E61 coffee machine. Therefore, the quality of the extracted coffee is different from that of the traditional E61 coffee machine. Utility Model Content

[0004] The purpose of the present utility model is to provide a coffee machine to solve the problems raised in the above background technology.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions: a coffee machine, comprising a casing, a water tank is placed inside the casing, and a top cover is arranged at the upper end of the casing;

[0006] A water distribution grid is clamped at the bottom of the casing to fix the water tank in the casing;

[0007] A flow limiting screw is installed on the water distribution grid frame, a water distribution grid and a powder bowl are installed below the water distribution grid frame, a powder bowl rack is clamped below the water distribution grid frame, and the powder bowl rack connects the water distribution grid, the powder bowl and the water distribution grid frame together; a liquid receiving cup is also installed below the water distribution grid frame.

[0008] Preferably, a rotating nut is threadedly mounted on the top cover to achieve opening and closing of the top cover.

[0009] Preferably, an air nozzle is fixedly mounted on the top cover, a pressure reducing valve switch is rotatably mounted on the outer side of the air nozzle, and a pressure relief hole is also opened on the top cover, and the pressure reducing valve switch is used to control the opening and closing of the pressure relief hole.

[0010] Preferably, a bayonet is provided at the upper opening of the housing, and a raised portion matching the bayonet is integrally formed at the edge of the top cover.

[0011] Preferably, a flow-limiting hole is provided in the flow-limiting screw, a flow-limiting copper sheet is installed on the upper end of the flow-limiting screw through a fixing screw, and the flow-limiting copper sheet is provided with an opening, and the diameter of the opening is 0.5-1.2 mm.

[0012] Preferably, it comprises a powder receiving ring, and a magnet is embedded in the inner side of the powder receiving ring.

[0013] Preferably, it further comprises a support frame, on which the bottom edge of the powder bowl frame is placed, and the support frame is provided with a plurality of insertion holes, in which legs are inserted.

[0014] Preferably, the support frame is provided with 8 sockets, four of which are tilted downward by 30°, and the other four are tilted downward by 45°.

[0015] Preferably, it also includes an anti-gravity liquid receiving bowl and an anti-gravity extraction tube. The anti-gravity liquid receiving bowl is threadedly connected to the end of the powder bowl rack away from the powder bowl. The anti-gravity extraction tube is plugged into the current limiting screw and is located in the water tank. When the entire coffee machine body is inverted, the water inside the water tank can flow upward from the anti-gravity extraction tube.

[0016] Preferably, the water tank is made of polyphenylene sulfone resin, and the amount of water inside can be observed.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] The utility model adopts a brand-new structural design and utilizes the water distribution network structure of the traditional E61 version coffee machine. The appearance and performance are basically consistent with the traditional E61 coffee machine, which improves the quality of extracted coffee, and the device can be used as a saturated brewing head to be modified into a commercial coffee machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is an exploded view of the utility model;

[0020] Figure 2 This is a structural diagram of the back casing and the support frame of the utility model;

[0021] Figure 3 This is a diagram of the housing of the utility model in a storage state;

[0022] Figure 4 This is a structural diagram of the casing and top cover of the utility model;

[0023] Figure 5 This is a structural diagram of the anti-gravity coffee extraction method of the present invention.

[0024] In the figure: 1. casing; 2. rotating nut; 3. top cover; 4. air nozzle; 5. pressure reducing valve switch; 6. water tank; 7. liquid receiving cup; 8. support frame; 9. support leg; 10. pressure relief hole; 11. cover plate; 12. current limiting screw; 13. water distribution grid; 14. water distribution grid; 15. powder bowl; 16. powder bowl rack; 17. powder receiving ring; 18. powder hammer; 19. anti-gravity liquid receiving bowl; 20. anti-gravity extraction tube. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] Please refer to Figure 1-4 The present embodiment provides a coffee machine, comprising a housing 1, the housing 1 is a cylindrical structure, and is hollowed out, a water tank 6 is placed inside the housing 1, and a top cover 3 is provided on the top of the housing 1. Figure 1 and Figure 4 As shown, a bayonet is provided at the top opening of the casing 1, and a protrusion matching the bayonet is integrally formed at the edge of the top cover 3. Align the protrusion with the bayonet, and then rotate the top cover 3, so that the top cover 3 is sealed and connected to the casing 1.

[0027] An air nozzle 4 is fixedly mounted on the top cover 3, and the air nozzle 4 is used to connect with an air pump or a carbon dioxide air pump or other air pump to fill gas into the water tank 6 to increase the air pressure inside the water tank 6, which is the same as the principle of an existing coffee machine.

[0028] The outside of the air nozzle 4 is rotatably mounted with an air nozzle connector, the air nozzle 4 is connected to the air nozzle connector inside, and the pressure reducing valve switch 5 is rotatably mounted on the outside. A groove for mounting the air nozzle 4 and the pressure reducing valve switch 5 is provided on the top cover 3, and a pressure relief hole 10 is provided in the groove. The pressure reducing valve switch 5 covers the pressure relief hole 10. When pressure relief is required, it is only necessary to rotate the pressure reducing valve switch 5 to separate the pressure reducing valve switch 5 from the pressure relief hole 10. When the pressure relief hole 10 is opened, the air can be exhausted to the outside. When the pressure reducing valve switch 5 is located directly above the pressure relief hole 10, the pressure reducing valve switch 5 blocks the pressure relief hole 10, and the water tank 6 is in a sealed state. Compared with the current pressure relief methods on the market, which generally reduce pressure by pulling a rod or pressing, and all pneumatic pressure relief methods are a single external part, the present embodiment can reduce pressure by toggling the pressure reducing valve switch 5 left and right, and the part is integrated with the air nozzle 4, which saves more placement space.

[0029] A brass nut is also threadedly mounted on the middle of the top cover 3, and the brass nut can be removed for installing an external pressure gauge or other equipment.

[0030] A rotating nut 2 is threadedly mounted on the top cover 3. Figure 1 and Figure 4As shown, two rotating nuts 2 are provided and arranged symmetrically. When rotating the top cover, a finger is placed on the rotating nut 2 and force is applied clockwise or counterclockwise, and the housing with the top cover 3 rotates on the housing 1 to achieve the installation or opening of the top cover 3. A cover plate 11 made of PPSU (polyphenylene sulfone resin) is fixed to the bottom of the top cover 3 by bolts.

[0031] In this embodiment, the water tank 6 is made of PPSU (polyphenylene sulfone resin). The translucent PPSU water tank allows the water level to be observed in real time, which is not available in other pneumatic coffee machines. The cover plate is located between the top opening of the water tank 6 and the top cover 3 to prevent the water in the water tank 6 from directly contacting the top cover 3, which has a heat preservation effect and can reduce the heat dissipation of the top cover 3.

[0032] The bottom of the housing 1 is connected with a water distribution grid 13. Figure 1 As shown, a card slot is provided at the bottom of the housing 1, and a card block is fixedly installed at the upper edge of the water-dividing grid frame 13. The water-dividing grid frame 13 is installed together with the housing 1 by using the card block and the card slot. When the housing 1 and the water-dividing grid frame 13 are installed together, the water-dividing grid frame 13 fixes the water tank 6 inside the housing 1. The internal capacity of the water tank 6 is 120 ml, which is used to provide a complete coffee extraction, and the powder hammer 18 can also be completely placed in the water tank 6 for storage.

[0033] The center of the water distribution grid 13 is threadedly mounted with a flow limiting screw 12, such as Figure 1 As shown, the flow-limiting screw 12 is inserted into the water tank 6. The default flow-limiting hole of the flow-limiting screw 12 is 1.5 mm, and three evenly distributed water outlets are provided to evenly diffuse the flow. A flow-limiting copper sheet is installed at the upper opening of the flow-limiting screw 12 by fixing the screw. The diameter of the flow-limiting copper sheet is between 0.5 mm and 1.2 mm, which is used to limit the flow rate of the water flow, so that the pneumatic coffee machine can achieve the extraction quality of a traditional commercial coffee machine.

[0034] The lower part of the water distribution grid frame 13 is provided with an opening, and a water distribution grid 14 is installed in the inner cavity of the opening, and the water distribution grid 14 drips water evenly into the coffee; the lower part of the water distribution grid frame 13 is clamped with a powder bowl rack 16, such as Figure 1 As shown, a clamping ring is fixedly installed at the outer edge of the powder bowl rack 16, and a clamping groove is opened on the water separation grid 13. The clamping ring of the powder bowl rack 16 is inserted into the clamping groove, so that the powder bowl rack 16 and the water separation grid 13 are installed together. A powder bowl 15 is placed in the top opening of the powder bowl rack 16, and the powder bowl is used to place coffee powder. Figure 1 As shown, when the powder bowl rack 16 and the water separation grid rack 13 are installed together, the water separation grid 14, the powder bowl 15 and the water separation grid rack 13 are connected together. After the coffee powder is placed, the coffee powder needs to be compacted with a powder hammer 18.

[0035] In this embodiment, a powder receiving ring 17 is also provided. Figure 1 As shown, the inner ring of the powder receiving ring 17 is provided with an inward convex ring, and the convex ring is embedded with a neodymium magnet, which can be used to adsorb the powder bowl 15. When pouring coffee powder into the powder bowl 15, the powder receiving ring 17 is placed on the outside of the powder bowl 15, and the neodymium magnet is adsorbed together with the powder bowl 15, which increases the diameter of the powder bowl 15, makes it more convenient to put in the coffee powder, and can prevent the coffee powder from scattering.

[0036] A liquid receiving cup 7 is also placed below the water separation grid 13. The inner diameter of the liquid receiving cup 7 is larger than the diameter of the powder bowl rack 16. When stored, the liquid receiving cup 7 can be directly covered on the outside of the powder bowl rack 16. The powder bowl rack 16, the powder bowl 15, and the powder receiving ring 17 can be completely stored inside. When extracting, the liquid receiving cup 7 is used to hold coffee liquid.

[0037] A support frame 8 is also placed at the bottom edge of the powder bowl rack 16. Figure 1 and Figure 2 As shown, the support frame 8 is a notched annular structure, and the powder bowl rack 16 can be directly placed inside the ring of the support frame 8. The support frame 8 is also provided with 8 plug holes, and four legs 9 are plugged into the plug holes. In this embodiment, four plug holes are tilted downward by 30°, and the remaining four plug holes are tilted downward by 45°. When the four legs 9 are inserted into the 30° plug holes, the height of the support frame 8 is lower, and when the four legs 9 are inserted into the 45° plug holes, the height is higher. By plugging into the plug holes at different angles, the tilt angle of the legs 9 is changed, thereby realizing the adjustment of the height of the support frame 8 and the coffee machine on it.

[0038] In a further embodiment, Figure 5 As shown, the powder bowl rack 16 is further connected to an anti-gravity liquid receiving bowl 19 via a thread on one side away from the powder bowl, and an anti-gravity extraction tube 20 is installed inside the water tank 6, and one end of the anti-gravity extraction tube 20 is provided with a thread, such as Figure 1 As shown, the anti-gravity extraction tube 20 is plugged into the flow-limiting screw 12 of the water tank 6, and one end of the anti-gravity extraction tube 20 is threadedly installed with the flow-limiting screw 12; when the water tank 6 is filled with high-pressure gas, water will flow upward from the gravity extraction tube 20 under the action of the air pressure. When the coffee machine is inverted as a whole, that is, one end of the housing 1 with the top cover 3 is placed on the support frame 8, and the entire device is inverted, when extracting coffee, anti-gravity extraction can be achieved. When inverted, the liquid in the water tank 6 flows from bottom to top in the anti-gravity extraction tube 20, passes through the coffee powder inside the powder bowl 15, and finally flows out of the liquid to the anti-gravity liquid receiving bowl 19, thereby realizing anti-gravity extraction of coffee. Compared with traditional pneumatic coffee machines, the function of anti-gravity extraction of coffee is added.

[0039] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A coffee machine, characterized in that: It comprises a casing (1), a water tank (6) is placed inside the casing (1), and a top cover (3) is arranged at the upper end of the casing (1); A water distribution grid (13) is clamped at the bottom of the casing (1) and is used to fix the water tank (6) in the casing (1); A flow limiting screw (12) is installed on the water-dividing grid frame (13); a water-dividing grid (14) and a powder bowl (15) are installed below the water-dividing grid frame (13); a powder bowl rack (16) is clamped below the water-dividing grid frame (13); the powder bowl rack (16) connects the water-dividing grid (14), the powder bowl (15) and the water-dividing grid frame (13); and a liquid receiving cup (7) is also installed below the water-dividing grid frame (13).

2. A coffee machine according to claim 1, characterized in that: A rotating nut (2) is threadably mounted on the top cover (3) to enable the top cover (3) to be opened and closed.

3. A coffee machine according to claim 2, characterized in that: The top cover (3) is also fixedly mounted with an air nozzle (4), and a pressure reducing valve switch (5) is rotatably mounted on the outer side of the air nozzle (4). The top cover (3) is also provided with a pressure relief hole (10), and the pressure reducing valve switch (5) is used to control the opening and closing of the pressure relief hole (10).

4. A coffee machine according to claim 2, characterized in that: A bayonet is provided at the upper opening of the housing (1), and a protrusion matching the bayonet is integrally formed at the edge of the top cover (3).

5. The coffee machine according to claim 2, characterized in that: The current limiting screw (12) is provided with a current limiting hole, and a current limiting copper sheet is installed on the upper end of the current limiting screw (12) via a fixing screw, and the current limiting copper sheet is provided with an opening, and the diameter of the opening is 0.5-1.2 mm.

6. The coffee machine according to claim 1, characterized in that: It comprises a powder receiving ring (17), the inner side of which is embedded with a magnet.

7. The coffee machine according to claim 1, characterized in that: It also comprises a support frame (8), on which the bottom edge of the powder bowl frame (16) is placed, and the support frame (8) is provided with a plurality of insertion holes, into which the legs (9) are inserted.

8. A coffee machine according to claim 7, characterized in that: The support frame (8) is respectively provided with 8 insertion holes, four of which are inclined downward by 30 degrees, and the other four are inclined downward by 45 degrees.

9. A coffee machine according to claim 8, characterized in that: The coffee machine also comprises an anti-gravity liquid receiving bowl (19) and an anti-gravity extraction tube (20). The anti-gravity liquid receiving bowl (19) is connected to the end of the powder bowl rack (16) away from the powder bowl (15) through a thread. The anti-gravity extraction tube (20) is plugged into the flow limiting screw (12) and is located in the water tank (6). When the entire coffee machine body is inverted, the water in the water tank (6) can flow upward from the anti-gravity extraction tube (20).

10. The coffee machine according to claim 8, characterized in that: The water tank (6) is made of polyphenylene sulfone resin, and the amount of water inside can be observed.

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