Hand-pressing coffee machine with electric heating saturated type brewing function

Abstract

The utility model belongs to the field of coffee machines, and provides a hand-pressing coffee machine with an electric heating saturated type brewing function, which comprises a base, a support frame is arranged on the base, a brewing component is arranged on the support frame, a piston component is arranged in the center of the brewing component, and the piston component is arranged on the base. A connecting rod assembly in linkage fit with the piston assembly is arranged at the loading end of the piston assembly, the brewing assembly is a saturated brewing assembly, the saturated brewing assembly is used for uniformly heating an extraction medium for extracting coffee, and an air channel communicated with the saturated brewing assembly is arranged in the connecting rod assembly and the piston assembly. A gas tank assembly communicated with the gas path channel is arranged at the position, close to the tail end of the connecting rod assembly, of the connecting rod assembly. The coffee machine is reasonable in design, simple in structure, good in heating performance, beneficial to reducing coffee pressurizing difficulty, high in practicability, high in utilization rate and suitable for large-scale popularization.

Description

Technical Field

[0001] This utility model belongs to the field of coffee machines, and in particular relates to a hand-operated coffee machine with an electric heating saturation brewing function. Background Technology

[0002] Manual coffee machines use manual pressure to apply high pressure to water-soluble coffee powder, allowing the water to extract the effective drinking components from the coffee, such as water-soluble components, fruit acids, caffeine, and oils.

[0003] Traditional manual coffee machines require heating water to make hot coffee, then using the hot water for pressurized extraction, or heating the coffee after brewing. This is cumbersome and negatively impacts the coffee-making experience. Existing patent CN210446722U discloses a manual coffee machine comprising: a base plate, a support frame, a cylinder, an alcohol lamp, a water boiler, and a steam boiler. Two water boilers are connected below the steam boiler, and an alcohol lamp is located at the bottom of each water boiler. This coffee machine uses a dual-boiler siphon system for water supply, with water flowing out from the tamper after the pressure lever handle descends. The addition of a steam boiler and a milk frothing function allows for more diverse coffee preparation methods. It also uses an alcohol lamp for heating and a water circulation system for heat preservation. However, this coffee machine is relatively complex, and heating and operation are cumbersome; its actual performance needs further improvement. Utility Model Content

[0004] This utility model addresses the technical problems existing in the aforementioned coffee machines by proposing a hand-operated coffee machine with electric heating saturation brewing function that is reasonably designed, simple in structure, has good heating performance, strong practicality, and high utilization rate.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: This utility model provides a hand-operated coffee machine with an electric heating saturation brewing function, including a base, a support frame on the base, a brewing assembly on the support frame, a piston assembly at the center of the brewing assembly, and a connecting rod assembly that is linked and cooperates with the loading end of the piston assembly. The brewing assembly is a saturation brewing assembly, which is used to uniformly heat the extraction medium for extracting coffee.

[0006] Preferably, the saturated brewing assembly includes an outer chamber and an inner piston sleeve. The top and bottom of the outer chamber are respectively provided with a top cover and a brewing head. The outer chamber, inner piston sleeve, top cover and brewing head form a saturated heating chamber. The saturated heating chamber is connected to the bottom of the piston assembly. A heating tube is provided in the saturated heating chamber. The heating tube is electrically connected to a heating control board provided inside the base.

[0007] Preferably, the saturated brewing assembly includes a first water hole located at the bottom of the saturated heating chamber, a water inlet check valve communicating with the first water hole on the side of the brewing head, a second water hole on the outlet side of the water inlet check valve, a connector located at the bottom inner part of the brewing head, a pressure check valve located at the center of the connector, a water outlet plate located at the bottom of the connector, a plurality of third water holes for water outlet on the water outlet plate, and the bottommost part of the brewing head for mounting the powder bowl.

[0008] Preferably, a water distribution net is provided below the water outlet plate.

[0009] Preferably, the linkage assembly includes a buffer arm hinged to the top of the support frame, a U-shaped arm hinged to the top of the buffer arm, the U-shaped arm being hinged to the top of the piston assembly, a loading rod being provided at the end of the U-shaped arm away from the buffer arm, and a handle being provided at the end of the loading rod.

[0010] Preferably, the connecting rod assembly and piston assembly are provided with an air passage communicating with the saturated brewing assembly, and the connecting rod assembly is provided with an air tank assembly communicating with the air passage near its tail end.

[0011] Preferably, the gas tank assembly includes a gas tank body, which is disposed in a mounting hole opened in the connecting rod assembly. A gas tank nozzle is provided at the end of the gas tank body, and a pressure output channel is provided in the output direction of the gas tank nozzle. A quick valve is provided at the control end of the pressure output channel.

[0012] Preferably, the quick valve includes a valve sleeve that slides with the end of the connecting rod assembly. The inner wall of the valve sleeve is provided with an annular groove and a sealing ring. The quick valve connects and disconnects the annular groove with the pressure output channel by moving the sliding sleeve.

[0013] Preferably, the pressure output channel includes a first L-shaped channel corresponding to the gas can nozzle and a second L-shaped channel corresponding to the gas passage, with one end of both the first L-shaped channel and the second L-shaped channel connected to a quick valve.

[0014] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0015] This invention provides a hand-operated coffee maker with an electrically heated saturated brewing function. The saturated brewing component can evenly heat water, which helps improve the preheating efficiency of the coffee. In addition to the linkage between the connecting rod assembly and the piston assembly, an air passage is provided to connect with the air tank assembly. The air tank assembly can pressurize the extraction medium inside the saturated brewing component, reducing the external force required for manual pressurization. This device has a reasonable design, simple structure, good heating performance, helps reduce the difficulty of pressurizing coffee, is highly practical, and has a high utilization rate, making it suitable for large-scale promotion. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 A cross-sectional view of a hand-operated coffee maker with an electrically heated saturated brewing function;

[0018] Figure 2 A 3D view of a hand-operated coffee maker with an electrically heated saturated brewing function;

[0019] Figure 3 A perspective view of a hand-operated coffee machine with an electrically heated saturated brewing function from another direction;

[0020] Figure 4 for Figure 1 Enlarged schematic diagram of structure A in the middle;

[0021] Figure 5 for Figure 1 Enlarged schematic diagram of the B-structure;

[0022] Figure 6 A cross-sectional view of a hand-operated coffee maker with an electrically heated saturated brewing function in another direction;

[0023] Figure 7 for Figure 6 Enlarged schematic diagram of the C-structure;

[0024] In the above figures:

[0025] 1. Base;

[0026] 2. Support frame;

[0027] 3. Brewing assembly; 31. Outer chamber; 32. Inner piston sleeve; 33. Top cover; 34. Brewing head; 35. Saturated heating chamber; 36. Heating tube; 37. First water hole; 38. Second water hole; 39. Connector; 310. Pressure check valve; 311. Water outlet plate; 312. Third water hole; 313. Water distribution network; 314. Inlet check valve;

[0028] 4. Piston assembly;

[0029] 5. Linkage assembly; 51. Buffer arm; 52. U-shaped arm; 53. Loading rod; 54. Handle bar;

[0030] 6. Gas passageway;

[0031] 7. Gas tank assembly; 71. Gas tank body; 72. Gas tank nozzle; 73. Pressure output channel; 731. First L-shaped channel; 732. Second L-shaped channel; 74. Quick valve; 741. Valve sleeve; 742. Annular groove; 743. Sealing ring;

[0032] 8. Heating control panel;

[0033] 9. Rice bowl. Detailed Implementation

[0034] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below in conjunction with the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other. For ease of description, the terms "upper," "lower," "left," and "right" appearing below only indicate that they correspond to the upper, lower, left, and right directions in the accompanying drawings and do not limit the structure.

[0035] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0036] Examples, such as Figures 1-7As shown, this utility model provides a hand-operated coffee maker with an electrically heated saturated brewing function, including a base 1, a support frame 2 on the base 1, a brewing assembly 3 on the support frame 2, a piston assembly 4 at the center of the brewing assembly 3, the piston assembly 4 including a piston and a piston rod, a brake rod radially connected to the top of the piston rod, and the brake rod hinged to a connecting rod assembly 5; the loading end of the piston assembly 4 is provided with a connecting rod assembly 5 that is linked to it. While the connecting rod assembly 5 performs planar movement under manual conditions, the piston and piston rod can generate vertical movement, thereby completing the pressurization action. Based on this, the brewing assembly 3 provided by this utility model is a saturated brewing assembly 3. The saturated brewing assembly 3 can uniformly heat the water, which is beneficial to improving the preheating efficiency of the coffee. The coffee is heated during the extraction process, resulting in hot coffee.

[0037] Specifically, the saturated brewing assembly 3 provided by this utility model includes an outer chamber 31 and an inner piston sleeve 32. The top and bottom of the outer chamber 31 are respectively provided with a top cover 33 and a brewing head 34. The top cover 33 has a water inlet, which is normally sealed with a plug. The outer chamber 31, inner piston sleeve 32, top cover 33, and brewing head 34 form a saturated heating chamber 35, which is connected to the bottom of the piston assembly 4. A heating tube 36 is provided in the saturated heating chamber 35. The support frame 2 has electrical connection holes corresponding to the heating tube 36, through which wires can be inserted. The heating tube 36 is electrically connected to a heating control board 8 located inside the base 1. A button connected to the heating control board 8 is embedded in the base 1. Thus, by manually operating the button, the heating tube 36 can heat the water added to the saturated heating chamber 35. Furthermore, the top of the saturated heating chamber 35 is sealed by the top cover 33, which facilitates the generation of negative pressure and loading force by the piston assembly 4 during its lifting and lowering.

[0038] Furthermore, the saturated brewing assembly 3 provided by this utility model includes a first water hole 37 disposed at the bottom of the saturated heating chamber 35, a water inlet check valve 314, a pressure relief valve and a pressure gauge disposed on the side of the brewing head 34 communicating with the first water hole 37, a second water hole 38 disposed on the water outlet side of the water inlet check valve 314, a connector 39 disposed at the inner bottom of the brewing head 34, a pressure water check valve 310 disposed at the center of the connector 39, a water outlet plate 311 disposed at the bottom of the connector 39, a plurality of third water holes 312 disposed on the water outlet plate 311 for discharging water, and the bottommost part of the brewing head 34 is used to install the powder bowl 9. The coffee bowl 9 is engaged with the brewing head 34. By manually driving the connecting rod assembly 5, the piston assembly 4 is first raised vertically to generate negative pressure. The negative pressure draws hot water from the saturated heating chamber 35 sequentially through the first water hole 37, the inlet check valve 314, and the second water hole 38 into the piston chamber below the piston. By pressing down the connecting rod assembly 5, the piston assembly 4 is lowered vertically to generate loading pressure. Under high pressure, the hot water enters the reserved gap between the connector 39 and the water outlet plate 311 through the pressure check valve 310, and then is distributed from the reserved gap to the third water hole 312. The water jet from the third water hole 312 is high-pressure, high-speed hot water. The hot water pressurizes and extracts the coffee powder in the coffee bowl 9. The extracted coffee liquid flows down from the coffee bowl 9 and can be collected in a coffee cup.

[0039] To improve extraction efficiency, this invention provides a water distribution net 313 below the water outlet plate 311 to evenly distribute high-pressure water, allowing the high-pressure water to come into more thorough contact with the coffee powder in the coffee bowl 9, resulting in better extraction efficiency and quality.

[0040] To improve the linkage between the connecting rod assembly 5 and the piston assembly 4, the connecting rod assembly 5 provided by this utility model includes a buffer arm 51 hinged to the top of the support frame 2. A U-shaped arm 52 is hinged to the top of the buffer arm 51. The U-shaped arm 52 is hinged to the top of the piston assembly 4. A loading rod 53 is provided at the end of the U-shaped arm 52 furthest from the buffer arm 51, and a handle 54 is provided at the end of the loading rod 53. The handle 54 is the direct action section for manual pressurization. The loading rod 53 and the handle 54 can form a lever arm of a certain length. By designing the connecting rod assembly 5 with the buffer arm 51, the lever arm, piston rod, buffer arm 51, support frame 2, and saturated brewing assembly 3 can form a continuous linkage-slider system, which helps to avoid dead points in the operation.

[0041] Considering users with less hand strength, this invention also provides a pneumatic pressure-assisted pressurization function. For example, the connecting rod assembly 5 and piston assembly 4 are equipped with a gas passage 6 that communicates with the saturated brewing assembly 3. Near its tail end, the connecting rod assembly 5 is equipped with a gas tank assembly 7 that communicates with the gas passage 6. The gas passage 6 remains connected and maintains a connection with the gas tank assembly 7. The gas tank assembly 7 can pressurize the extraction medium inside the saturated brewing assembly 3 by passively releasing gas pressure, thereby reducing the external force required for manual pressurization and making it easier to pressurize the coffee. This is suitable for users with less hand strength, improving the practicality and utilization of this coffee machine.

[0042] Specifically, the gas cylinder assembly 7 provided by this utility model includes a gas cylinder body 71, which is disposed in a mounting hole opened in the connecting rod assembly 5. A gas cylinder nozzle 72 is provided at the end of the gas cylinder body 71, and a pressure output channel 73 is provided in the output direction of the gas cylinder nozzle 72. A quick valve 74 is provided at the control end of the pressure output channel 73. Further, the quick valve 74 includes a valve sleeve 741 that slides with the end of the connecting rod assembly 5. The inner wall of the valve sleeve 741 is provided with an annular groove 742 and a sealing ring 743. The sealing rings 743 are arranged in pairs on both sides of the annular groove. The quick valve 74 connects and disconnects the annular groove 742 from the pressure output channel 73 by moving the valve sleeve 741. The handle 54 is provided with a mounting groove for slidably assembling the valve sleeve 741. The two ends of the mounting groove are used to limit the maximum movement distance of the valve sleeve 741, and the valve sleeve 741 will not move freely in non-manual situations. In this way, the pressure output channel 73 and the air passage 6 can be quickly connected and disconnected by manually sliding the quick valve 74, thereby providing air pressure assistance quickly and conveniently, reducing the difficulty of manually pressurizing and extracting coffee.

[0043] Furthermore, the pressure output channel 73 provided by this utility model includes a first L-shaped channel 731 corresponding to the gas canister nozzle 72 and a second L-shaped channel 732 corresponding to the gas passage 6. The first L-shaped channel 731 and the second L-shaped channel 732 are centrally symmetrically distributed, and each has one end connected to the quick valve 74. In this way, when the valve sleeve 741 is in its original position, the first L-shaped channel 731 and the second L-shaped channel 732 are actually disconnected. However, when the valve sleeve 741 slides to the front end of the handle 54 in its original position, the first L-shaped channel 731 and the second L-shaped channel 732 are connected through the annular groove 742, thereby connecting the pressure output channel 73 to the gas passage 6. The passively released pressure then quickly enters the gas passage 6, thus achieving pneumatic assistance. This gas canister assembly 7 is ingeniously designed, easy to manufacture, and highly practical.

[0044] To ensure the continuity of the air passage 6, considering the connection node design between the piston assembly 4 and the connecting rod assembly 5, the air passage 6 provided by this invention includes a vertically penetrating section extending from the bottom of the piston upwards to the brake rod. The brake rod has a first horizontal section communicating with the vertically penetrating section inside. The U-shaped arm 52 has an L-shaped section communicating with the first horizontal section and extending to the center of the loading rod 53. The center of the loading rod 53 has a second horizontal section communicating with the L-shaped section, and the second horizontal section communicates with the outlet end of the gas cylinder assembly 7. One end of the brake rod is a plug bolt, and the other end is a hollow bolt with a through hole on its side communicating with its center and connecting to the L-shaped section. The extended end of the L-shaped section communicates with the second horizontal section. In this way, the systematic movement of the connecting rod assembly 5 and the piston assembly 4 does not affect the connectivity of the air passage 6. While ensuring the mechanical movement of the connecting rod assembly 5, the air passage 6 remains connected to the gas cylinder assembly 7, facilitating coffee making using air pressure assistance.

[0045] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A hand-operated coffee maker with an electrically heated saturated brewing function, comprising a base, a support frame mounted on the base, a brewing assembly mounted on the support frame, a piston assembly disposed at the center of the brewing assembly, and a connecting rod assembly that is linked and cooperates with the loading end of the piston assembly, characterized in that, The brewing assembly is a saturation brewing assembly, which is used to uniformly heat the extraction medium for extracting coffee.

2. A hand-operated coffee maker with electric heating saturation brewing function according to claim 1, characterized in that, The saturated brewing assembly includes an outer chamber and an inner piston sleeve. The top and bottom of the outer chamber are respectively provided with a top cover and a brewing head. The outer chamber, inner piston sleeve, top cover and brewing head form a saturated heating chamber. The saturated heating chamber is connected to the bottom of the piston assembly. A heating tube is provided in the saturated heating chamber. The heating tube is electrically connected to a heating control board provided inside the base.

3. A hand-operated coffee maker with electric heating saturation brewing function according to claim 2, characterized in that, The saturated brewing assembly includes a first water hole located at the bottom of the saturated heating chamber. A one-way valve communicating with the first water hole is provided on the side of the brewing head. A second water hole is provided on the outlet side of the one-way valve. A connector is provided at the bottom inner part of the brewing head. A pressure one-way valve is provided at the center of the connector. A water outlet plate is provided at the bottom of the connector. A plurality of third water holes for water outlet are provided on the water outlet plate. The bottommost part of the brewing head is used to install the powder bowl.

4. A hand-operated coffee maker with an electrically heated saturated brewing function as described in claim 3, characterized in that, A water distribution net is installed below the water outlet plate.

5. A hand-operated coffee maker with an electrically heated saturated brewing function as described in claim 1, characterized in that, The linkage assembly includes a buffer arm hinged to the top of the support frame, a U-shaped arm hinged to the top of the buffer arm, the U-shaped arm being hinged to the top of the piston assembly, a loading rod being provided at the end of the U-shaped arm away from the buffer arm, and a handle being provided at the end of the loading rod.

6. A hand-operated coffee maker with an electrically heated saturated brewing function according to any one of claims 1-5, characterized in that, The connecting rod assembly and piston assembly are provided with a gas passage that communicates with the saturated brewing assembly, and the connecting rod assembly is provided with a gas tank assembly that communicates with the gas passage near its tail end.

7. A hand-operated coffee maker with electric heating saturation brewing function according to claim 6, characterized in that, The gas tank assembly includes a gas tank body, which is disposed in a mounting hole opened in the connecting rod assembly. A gas tank nozzle is provided at the end of the gas tank body. A pressure output channel is provided in the output direction of the gas tank nozzle. A quick valve is provided at the control end of the pressure output channel.

8. A hand-operated coffee maker with electric heating saturation brewing function according to claim 7, characterized in that, The quick-release valve includes a valve sleeve that slides into the end of the connecting rod assembly. The inner wall of the valve sleeve is provided with an annular groove and a sealing ring. The quick-release valve connects and disconnects the annular groove with the pressure output channel by moving the sliding sleeve.

9. A hand-operated coffee maker with an electrically heated saturated brewing function according to claim 7 or 8, characterized in that, The pressure output channel includes a first L-shaped channel that is connected to the gas can nozzle and a second L-shaped channel that is connected to the gas passage. One end of the first L-shaped channel and the second L-shaped channel are both connected to a quick valve.

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